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June 2009

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[Maria-developers] bzr commit into MariaDB 5.1, with Maria 1.5:maria branch (knielsen:2713)
by knielsen＠knielsen-hq.org 15 Jun '09

15 Jun '09

#At lp:maria 2713 knielsen(a)knielsen-hq.org 2009-06-15 Cherry-pick revid:psergey@askmonty.org-20090608135546-ut1yrzbah4gdw6e6 from Sergey's table-elimination branch to get a clean Valgrind. added: strings/strmov_overlapp.c modified: include/m_string.h libmysql/Makefile.shared strings/Makefile.am === modified file 'include/m_string.h' --- a/include/m_string.h 2009-05-06 12:03:24 +0000 +++ b/include/m_string.h 2009-06-15 11:01:35 +0000 @@ -98,7 +98,8 @@ extern const double log_10[309]; #ifdef BAD_STRING_COMPILER #define strmov(A,B) (memccpy(A,B,0,INT_MAX)-1) #else -#define strmov_overlapp(A,B) strmov(A,B) +extern char *strmov_overlapp(char *dest, const char *src); +/* Warning: the following is likely not to work: */ #define strmake_overlapp(A,B,C) strmake(A,B,C) #endif === modified file 'libmysql/Makefile.shared' --- a/libmysql/Makefile.shared 2008-04-28 16:24:05 +0000 +++ b/libmysql/Makefile.shared 2009-06-15 11:01:35 +0000 @@ -46,7 +46,8 @@ mystringsobjects = strmov.lo strxmov.lo ctype-win1250ch.lo ctype-utf8.lo ctype-extra.lo \ ctype-ucs2.lo ctype-gb2312.lo ctype-gbk.lo \ ctype-sjis.lo ctype-tis620.lo ctype-ujis.lo \ - ctype-uca.lo xml.lo my_strtoll10.lo str_alloc.lo + ctype-uca.lo xml.lo my_strtoll10.lo str_alloc.lo \ + strmov_overlapp.lo mystringsextra= strto.c dbugobjects = dbug.lo # IT IS IN SAFEMALLOC.C sanity.lo === modified file 'strings/Makefile.am' --- a/strings/Makefile.am 2009-03-24 13:58:52 +0000 +++ b/strings/Makefile.am 2009-06-15 11:01:35 +0000 @@ -21,19 +21,19 @@ pkglib_LIBRARIES = libmystrings.a # Exact one of ASSEMBLER_X if ASSEMBLER_x86 ASRCS = strings-x86.s longlong2str-x86.s my_strtoll10-x86.s -CSRCS = bfill.c bmove.c bmove512.c bchange.c strxnmov.c int2str.c str2int.c r_strinstr.c strtod.c bcmp.c strtol.c strtoul.c strtoll.c strtoull.c llstr.c strnlen.c ctype.c ctype-simple.c ctype-mb.c ctype-big5.c ctype-cp932.c ctype-czech.c ctype-eucjpms.c ctype-euc_kr.c ctype-gb2312.c ctype-gbk.c ctype-sjis.c ctype-tis620.c ctype-ujis.c ctype-utf8.c ctype-ucs2.c ctype-uca.c ctype-win1250ch.c ctype-bin.c ctype-latin1.c my_vsnprintf.c xml.c decimal.c ctype-extra.c str_alloc.c longlong2str_asm.c my_strchr.c +CSRCS = bfill.c bmove.c bmove512.c bchange.c strxnmov.c int2str.c str2int.c r_strinstr.c strtod.c bcmp.c strtol.c strtoul.c strtoll.c strtoull.c llstr.c strnlen.c ctype.c ctype-simple.c ctype-mb.c ctype-big5.c ctype-cp932.c ctype-czech.c ctype-eucjpms.c ctype-euc_kr.c ctype-gb2312.c ctype-gbk.c ctype-sjis.c ctype-tis620.c ctype-ujis.c ctype-utf8.c ctype-ucs2.c ctype-uca.c ctype-win1250ch.c ctype-bin.c ctype-latin1.c my_vsnprintf.c xml.c decimal.c ctype-extra.c str_alloc.c longlong2str_asm.c my_strchr.c strmov_overlapp.c else if ASSEMBLER_sparc32 # These file MUST all be on the same line!! Otherwise automake # generats a very broken makefile ASRCS = bmove_upp-sparc.s strappend-sparc.s strend-sparc.s strinstr-sparc.s strmake-sparc.s strmov-sparc.s strnmov-sparc.s strstr-sparc.s -CSRCS = strcont.c strfill.c strcend.c is_prefix.c longlong2str.c bfill.c bmove.c bmove512.c bchange.c strxnmov.c int2str.c str2int.c r_strinstr.c strtod.c bcmp.c strtol.c strtoul.c strtoll.c strtoull.c llstr.c strnlen.c strxmov.c ctype.c ctype-simple.c ctype-mb.c ctype-big5.c ctype-cp932.c ctype-czech.c ctype-eucjpms.c ctype-euc_kr.c ctype-gb2312.c ctype-gbk.c ctype-sjis.c ctype-tis620.c ctype-ujis.c ctype-utf8.c ctype-ucs2.c ctype-uca.c ctype-win1250ch.c ctype-bin.c ctype-latin1.c my_vsnprintf.c xml.c decimal.c ctype-extra.c my_strtoll10.c str_alloc.c my_strchr.c +CSRCS = strcont.c strfill.c strcend.c is_prefix.c longlong2str.c bfill.c bmove.c bmove512.c bchange.c strxnmov.c int2str.c str2int.c r_strinstr.c strtod.c bcmp.c strtol.c strtoul.c strtoll.c strtoull.c llstr.c strnlen.c strxmov.c ctype.c ctype-simple.c ctype-mb.c ctype-big5.c ctype-cp932.c ctype-czech.c ctype-eucjpms.c ctype-euc_kr.c ctype-gb2312.c ctype-gbk.c ctype-sjis.c ctype-tis620.c ctype-ujis.c ctype-utf8.c ctype-ucs2.c ctype-uca.c ctype-win1250ch.c ctype-bin.c ctype-latin1.c my_vsnprintf.c xml.c decimal.c ctype-extra.c my_strtoll10.c str_alloc.c my_strchr.c strmov_overlapp.c else #no assembler ASRCS = # These file MUST all be on the same line!! Otherwise automake # generats a very broken makefile -CSRCS = strxmov.c bmove_upp.c strappend.c strcont.c strend.c strfill.c strcend.c is_prefix.c strstr.c strinstr.c strmake.c strnmov.c strmov.c longlong2str.c bfill.c bmove.c bmove512.c bchange.c strxnmov.c int2str.c str2int.c r_strinstr.c strtod.c bcmp.c strtol.c strtoul.c strtoll.c strtoull.c llstr.c strnlen.c ctype.c ctype-simple.c ctype-mb.c ctype-big5.c ctype-cp932.c ctype-czech.c ctype-eucjpms.c ctype-euc_kr.c ctype-gb2312.c ctype-gbk.c ctype-sjis.c ctype-tis620.c ctype-ujis.c ctype-utf8.c ctype-ucs2.c ctype-uca.c ctype-win1250ch.c ctype-bin.c ctype-latin1.c my_vsnprintf.c xml.c decimal.c ctype-extra.c my_strtoll10.c str_alloc.c my_strchr.c +CSRCS = strxmov.c bmove_upp.c strappend.c strcont.c strend.c strfill.c strcend.c is_prefix.c strstr.c strinstr.c strmake.c strnmov.c strmov.c longlong2str.c bfill.c bmove.c bmove512.c bchange.c strxnmov.c int2str.c str2int.c r_strinstr.c strtod.c bcmp.c strtol.c strtoul.c strtoll.c strtoull.c llstr.c strnlen.c ctype.c ctype-simple.c ctype-mb.c ctype-big5.c ctype-cp932.c ctype-czech.c ctype-eucjpms.c ctype-euc_kr.c ctype-gb2312.c ctype-gbk.c ctype-sjis.c ctype-tis620.c ctype-ujis.c ctype-utf8.c ctype-ucs2.c ctype-uca.c ctype-win1250ch.c ctype-bin.c ctype-latin1.c my_vsnprintf.c xml.c decimal.c ctype-extra.c my_strtoll10.c str_alloc.c my_strchr.c strmov_overlapp.c endif endif @@ -54,7 +54,7 @@ EXTRA_DIST = ctype-big5.c ctype-cp932.c strinstr-sparc.s strmake-sparc.s strmov-sparc.s \ strnmov-sparc.s strstr-sparc.s strxmov-sparc.s \ t_ctype.h my_strchr.c CMakeLists.txt \ - CHARSET_INFO.txt + CHARSET_INFO.txt strmov_overlapp.c libmystrings_a_LIBADD= conf_to_src_SOURCES = conf_to_src.c xml.c ctype.c bcmp.c === added file 'strings/strmov_overlapp.c' --- a/strings/strmov_overlapp.c 1970-01-01 00:00:00 +0000 +++ b/strings/strmov_overlapp.c 2009-06-15 11:01:35 +0000 @@ -0,0 +1,26 @@ +/* Copyright (C) 2000 MySQL AB + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; version 2 of the License. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ + +#include <my_global.h> +#include "m_string.h" + +/* A trivial implementation */ +char *strmov_overlapp(char *dst, const char *src) +{ + size_t len= strlen(src); + memmove(dst, src, len+1); + return dst+len; +} +

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[Maria-developers] bzr commit into MariaDB 5.1, with Maria 1.5:maria branch (psergey:2714)
by Sergey Petrunia 14 Jun '09

14 Jun '09

#At lp:maria based on revid:psergey@askmonty.org-20090614123504-jf4pcb333ojwaxfy 2714 Sergey Petrunia 2009-06-15 MWL#17: Table elimination - Fix print_join() to work both for EXPLAIN EXTENDED (after table elimination) and for CREATE VIEW (after join->prepare() but without any optimization). modified: mysql-test/r/union.result sql/sql_select.cc per-file messages: mysql-test/r/union.result MWL#17: Table elimination - Adjust test results sql/sql_select.cc MWL#17: Table elimination - Fix print_join() to work both for EXPLAIN EXTENDED (after table elimination) and for CREATE VIEW (after join->prepare() but without any optimization). === modified file 'mysql-test/r/union.result' --- a/mysql-test/r/union.result 2009-03-19 10:18:52 +0000 +++ b/mysql-test/r/union.result 2009-06-14 20:59:24 +0000 @@ -522,7 +522,7 @@ id select_type table type possible_keys 2 UNION t2 const PRIMARY PRIMARY 4 const 1 100.00 NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL NULL Warnings: -Note 1003 (select '1' AS `a`,'1' AS `b` from `test`.`t1` where ('1' = 1)) union (select '1' AS `a`,'10' AS `b` from `test`.`t2` where ('1' = 1)) +Note 1003 (select '1' AS `a`,'1' AS `b` from `test`.`t1` where 1) union (select '1' AS `a`,'10' AS `b` from `test`.`t2` where 1) (select * from t1 where a=5) union (select * from t2 where a=1); a b 1 10 === modified file 'sql/sql_select.cc' --- a/sql/sql_select.cc 2009-06-14 12:35:04 +0000 +++ b/sql/sql_select.cc 2009-06-14 20:59:24 +0000 @@ -16937,18 +16937,28 @@ static void print_join(THD *thd, *t= ti++; DBUG_ASSERT(tables->elements >= 1); - //pserey:TODO check! + /* + Assert that the first table in the list isn't eliminated (if it was we + would have skipped the entire join nest) + */ + DBUG_ASSERT(!eliminated_tables || + !((*table)->table && ((*table)->table->map & eliminated_tables) || + (*table)->nested_join && !((*table)->nested_join->used_tables & + ~eliminated_tables))); (*table)->print(thd, eliminated_tables, str, query_type); TABLE_LIST **end= table + tables->elements; for (TABLE_LIST **tbl= table + 1; tbl < end; tbl++) { TABLE_LIST *curr= *tbl; - // psergey-todo-todo: - // base table: check - if (curr->table && (curr->table->map & eliminated_tables) || - curr->nested_join && !(curr->nested_join->used_tables & - ~eliminated_tables)) + /* + The (*) check guards againist the case of printing the query for + CREATE VIEW. There we'll have nested_join->used_tables==0. + */ + if (eliminated_tables && // (*) + (curr->table && (curr->table->map & eliminated_tables) || + curr->nested_join && !(curr->nested_join->used_tables & + ~eliminated_tables))) { continue; }

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[Maria-developers] bzr commit into MariaDB 5.1, with Maria 1.5:maria branch (psergey:2713)
by Sergey Petrunia 14 Jun '09

14 Jun '09

#At lp:maria based on revid:psergey@askmonty.org-20090614100110-u7l54gk0b6zbtj50 2713 Sergey Petrunia 2009-06-14 MWL#17: Table elimination - Fix the previous cset: take into account that select_lex may be printed when 1. There is no select_lex->join at all (in that case, assume that no tables were eliminated) 2. select_lex->join exists but there was no JOIN::optimize() call yet. handle this by initializing join->eliminated really early. modified: sql/sql_select.cc sql/sql_select.h per-file messages: sql/sql_select.cc MWL#17: Table elimination - Fix the previous cset: take into account that select_lex may be printed when 1. There is no select_lex->join at all (in that case, assume that no tables were eliminated) 2. select_lex->join exists but there was no JOIN::optimize() call yet. handle this by initializing join->eliminated really early. sql/sql_select.h MWL#17: Table elimination - Fix the previous cset: take into account that select_lex may be printed when 1. There is no select_lex->join at all (in that case, assume that no tables were eliminated) 2. select_lex->join exists but there was no JOIN::optimize() call yet. handle this by initializing join->eliminated really early. === modified file 'sql/sql_select.cc' --- a/sql/sql_select.cc 2009-06-14 10:01:10 +0000 +++ b/sql/sql_select.cc 2009-06-14 12:35:04 +0000 @@ -2731,7 +2731,7 @@ static void eliminate_tables(JOIN *join, table_map used_tables; DBUG_ENTER("eliminate_tables"); - join->eliminated_tables= 0; + DBUG_ASSERT(join->eliminated_tables == 0); /* MWL#17 is only about outer join elimination, so: */ if (!join->outer_join) @@ -16888,7 +16888,7 @@ bool mysql_explain_union(THD *thd, SELEC unit->fake_select_lex->options|= SELECT_DESCRIBE; if (!(res= unit->prepare(thd, result, SELECT_NO_UNLOCK | SELECT_DESCRIBE))) res= unit->exec(); - res|= unit->cleanup(); + //psergey-move: res|= unit->cleanup(); } else { @@ -17164,7 +17164,7 @@ void st_select_lex::print(THD *thd, Stri { str->append(STRING_WITH_LEN(" from ")); /* go through join tree */ - print_join(thd, join->eliminated_tables, str, &top_join_list, query_type); + print_join(thd, join? join->eliminated_tables: 0, str, &top_join_list, query_type); } else if (where) { === modified file 'sql/sql_select.h' --- a/sql/sql_select.h 2009-06-14 10:01:10 +0000 +++ b/sql/sql_select.h 2009-06-14 12:35:04 +0000 @@ -427,6 +427,7 @@ public: table= 0; tables= 0; const_tables= 0; + eliminated_tables= 0; join_list= 0; sort_and_group= 0; first_record= 0;

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[Maria-developers] bzr commit into MariaDB 5.1, with Maria 1.5:maria branch (psergey:2712)
by Sergey Petrunia 14 Jun '09

14 Jun '09

#At lp:maria based on revid:psergey@askmonty.org-20090609211133-wfau2tgwo2vpgc5d 2712 Sergey Petrunia 2009-06-14 MWL#17: Table elimination - Do not show eliminated tables in the output of EXPLAIN EXTENDED modified: mysql-test/r/table_elim.result mysql-test/t/table_elim.test sql/sql_select.cc sql/sql_select.h sql/table.h per-file messages: mysql-test/r/table_elim.result MWL#17: Table elimination - Do not show eliminated tables in the output of EXPLAIN EXTENDED mysql-test/t/table_elim.test MWL#17: Table elimination - Do not show eliminated tables in the output of EXPLAIN EXTENDED sql/sql_select.cc MWL#17: Table elimination - Do not show eliminated tables in the output of EXPLAIN EXTENDED sql/sql_select.h MWL#17: Table elimination - Do not show eliminated tables in the output of EXPLAIN EXTENDED sql/table.h MWL#17: Table elimination - Do not show eliminated tables in the output of EXPLAIN EXTENDED === modified file 'mysql-test/r/table_elim.result' --- a/mysql-test/r/table_elim.result 2009-06-09 21:11:33 +0000 +++ b/mysql-test/r/table_elim.result 2009-06-14 10:01:10 +0000 @@ -10,6 +10,11 @@ as select a, a as b from t1 where a in ( explain select t1.a from t1 left join t2 on t2.a=t1.a; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 4 +explain extended select t1.a from t1 left join t2 on t2.a=t1.a; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 4 100.00 +Warnings: +Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` where 1 select t1.a from t1 left join t2 on t2.a=t1.a; a 0 @@ -45,14 +50,16 @@ explain select t1.a from t1 left join (t id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 4 # Elimination when done within an outer join nest: -explain +explain extended select t0.* from t0 left join (t1 left join (t2 join t3 on t2.b=t3.b) on t2.a=t1.a and t3.a=t1.a) on t0.a=t1.a; -id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t0 ALL NULL NULL NULL NULL 4 -1 SIMPLE t1 ALL NULL NULL NULL NULL 4 +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t0 ALL NULL NULL NULL NULL 4 100.00 +1 SIMPLE t1 ALL NULL NULL NULL NULL 4 100.00 +Warnings: +Note 1003 select `test`.`t0`.`a` AS `a` from `test`.`t0` left join (`test`.`t1`) on((`test`.`t0`.`a` = `test`.`t1`.`a`)) where 1 # Elimination with aggregate functions explain select count(*) from t1 left join t2 on t2.a=t1.a; id select_type table type possible_keys key key_len ref rows Extra === modified file 'mysql-test/t/table_elim.test' --- a/mysql-test/t/table_elim.test 2009-06-09 21:11:33 +0000 +++ b/mysql-test/t/table_elim.test 2009-06-14 10:01:10 +0000 @@ -17,6 +17,7 @@ create table t3 (a int primary key, b in --echo # This will be eliminated: explain select t1.a from t1 left join t2 on t2.a=t1.a; +explain extended select t1.a from t1 left join t2 on t2.a=t1.a; select t1.a from t1 left join t2 on t2.a=t1.a; @@ -39,7 +40,7 @@ explain select t1.a from t1 left join (t explain select t1.a from t1 left join (t2 join t3 on t2.b=t3.b) on t2.a=t1.a and t3.a=t1.a; --echo # Elimination when done within an outer join nest: -explain +explain extended select t0.* from t0 left join (t1 left join (t2 join t3 on t2.b=t3.b) on t2.a=t1.a and === modified file 'sql/sql_select.cc' --- a/sql/sql_select.cc 2009-06-07 18:24:03 +0000 +++ b/sql/sql_select.cc 2009-06-14 10:01:10 +0000 @@ -2386,6 +2386,10 @@ mysql_select(THD *thd, Item ***rref_poin } else { + // psergey{ + if (select_options & SELECT_DESCRIBE) + free_join= 0; + // }psergey if (!(join= new JOIN(thd, fields, select_options, result))) DBUG_RETURN(TRUE); thd_proc_info(thd, "init"); @@ -2523,7 +2527,7 @@ static void mark_table_as_eliminated(JOI { DBUG_PRINT("info", ("Eliminated table %s", table->alias)); tab->type= JT_CONST; - tab->eliminated= TRUE; + join->eliminated_tables |= table->map; *const_tables |= table->map; join->const_table_map|= table->map; set_position(join, (*const_tbl_count)++, tab, (KEYUSE*)0); @@ -2726,6 +2730,10 @@ static void eliminate_tables(JOIN *join, Item *item; table_map used_tables; DBUG_ENTER("eliminate_tables"); + + join->eliminated_tables= 0; + + /* MWL#17 is only about outer join elimination, so: */ if (!join->outer_join) DBUG_VOID_RETURN; @@ -6060,6 +6068,7 @@ JOIN::make_simple_join(JOIN *parent, TAB tables= 1; const_tables= 0; const_table_map= 0; + eliminated_tables= 0; tmp_table_param.field_count= tmp_table_param.sum_func_count= tmp_table_param.func_count= 0; tmp_table_param.copy_field= tmp_table_param.copy_field_end=0; @@ -16509,7 +16518,7 @@ static void select_describe(JOIN *join, quick_type= -1; //psergey-todo: - if (tab->eliminated) + if (table->map & join->eliminated_tables) { used_tables|=table->map; continue; @@ -16912,6 +16921,7 @@ bool mysql_explain_union(THD *thd, SELEC */ static void print_join(THD *thd, + table_map eliminated_tables, String *str, List<TABLE_LIST> *tables, enum_query_type query_type) @@ -16927,12 +16937,22 @@ static void print_join(THD *thd, *t= ti++; DBUG_ASSERT(tables->elements >= 1); - (*table)->print(thd, str, query_type); + //pserey:TODO check! + (*table)->print(thd, eliminated_tables, str, query_type); TABLE_LIST **end= table + tables->elements; for (TABLE_LIST **tbl= table + 1; tbl < end; tbl++) { TABLE_LIST *curr= *tbl; + // psergey-todo-todo: + // base table: check + if (curr->table && (curr->table->map & eliminated_tables) || + curr->nested_join && !(curr->nested_join->used_tables & + ~eliminated_tables)) + { + continue; + } + if (curr->outer_join) { /* MySQL converts right to left joins */ @@ -16942,7 +16962,7 @@ static void print_join(THD *thd, str->append(STRING_WITH_LEN(" straight_join ")); else str->append(STRING_WITH_LEN(" join ")); - curr->print(thd, str, query_type); + curr->print(thd, eliminated_tables, str, query_type); if (curr->on_expr) { str->append(STRING_WITH_LEN(" on(")); @@ -16996,12 +17016,13 @@ Index_hint::print(THD *thd, String *str) @param str string where table should be printed */ -void TABLE_LIST::print(THD *thd, String *str, enum_query_type query_type) +void TABLE_LIST::print(THD *thd, table_map eliminated_tables, String *str, + enum_query_type query_type) { if (nested_join) { str->append('('); - print_join(thd, str, &nested_join->join_list, query_type); + print_join(thd, eliminated_tables, str, &nested_join->join_list, query_type); str->append(')'); } else @@ -17143,7 +17164,7 @@ void st_select_lex::print(THD *thd, Stri { str->append(STRING_WITH_LEN(" from ")); /* go through join tree */ - print_join(thd, str, &top_join_list, query_type); + print_join(thd, join->eliminated_tables, str, &top_join_list, query_type); } else if (where) { === modified file 'sql/sql_select.h' --- a/sql/sql_select.h 2009-06-03 13:10:45 +0000 +++ b/sql/sql_select.h 2009-06-14 10:01:10 +0000 @@ -211,9 +211,6 @@ typedef struct st_join_table { /** Bitmap of nested joins this table is part of */ nested_join_map embedding_map; - //psergey-todo: more justified place - bool eliminated; - void cleanup(); inline bool is_using_loose_index_scan() { @@ -289,6 +286,8 @@ public: */ bool resume_nested_loop; table_map const_table_map,found_const_table_map; + + table_map eliminated_tables; /* Bitmap of all inner tables from outer joins */ === modified file 'sql/table.h' --- a/sql/table.h 2009-06-03 13:10:45 +0000 +++ b/sql/table.h 2009-06-14 10:01:10 +0000 @@ -1366,7 +1366,8 @@ struct TABLE_LIST return (derived || view || schema_table || (create && !table->db_stat) || !table); } - void print(THD *thd, String *str, enum_query_type query_type); + void print(THD *thd, table_map eliminated_tables, String *str, + enum_query_type query_type); bool check_single_table(TABLE_LIST **table, table_map map, TABLE_LIST *view); bool set_insert_values(MEM_ROOT *mem_root);

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[Maria-developers] bzr commit into MariaDB 5.1, with Maria 1.5:maria branch (knielsen:2712)
by knielsen＠knielsen-hq.org 11 Jun '09

11 Jun '09

#At lp:maria 2712 knielsen(a)knielsen-hq.org 2009-06-11 [merge] Merge of Percona XtraDB into MariaDB. removed: mysql-test/include/ctype_innodb_like.inc mysql-test/include/have_innodb.inc mysql-test/include/innodb_trx_weight.inc mysql-test/r/innodb-autoinc.result mysql-test/r/innodb-lock.result mysql-test/r/innodb-replace.result mysql-test/r/innodb-semi-consistent.result mysql-test/r/innodb.result mysql-test/r/innodb_bug34053.result mysql-test/r/innodb_bug34300.result mysql-test/r/innodb_bug35220.result mysql-test/r/innodb_trx_weight.result mysql-test/t/innodb-autoinc.test mysql-test/t/innodb-lock.test mysql-test/t/innodb-master.opt mysql-test/t/innodb-replace.test mysql-test/t/innodb-semi-consistent-master.opt mysql-test/t/innodb-semi-consistent.test mysql-test/t/innodb.test mysql-test/t/innodb_bug34053.test mysql-test/t/innodb_bug34300.test mysql-test/t/innodb_bug35220.test mysql-test/t/innodb_trx_weight.test added: BUILD/compile-innodb BUILD/compile-innodb-debug mysql-test/include/ctype_innodb_like.inc mysql-test/include/have_innodb.inc mysql-test/include/innodb-index.inc mysql-test/include/innodb_trx_weight.inc mysql-test/r/innodb-analyze.result mysql-test/r/innodb-autoinc.result mysql-test/r/innodb-index.result mysql-test/r/innodb-index_ucs2.result mysql-test/r/innodb-lock.result mysql-test/r/innodb-replace.result mysql-test/r/innodb-semi-consistent.result mysql-test/r/innodb-timeout.result mysql-test/r/innodb-use-sys-malloc.result mysql-test/r/innodb-zip.result mysql-test/r/innodb.result mysql-test/r/innodb_bug34053.result mysql-test/r/innodb_bug34300.result mysql-test/r/innodb_bug35220.result mysql-test/r/innodb_bug36169.result mysql-test/r/innodb_bug36172.result mysql-test/r/innodb_bug40360.result mysql-test/r/innodb_bug41904.result mysql-test/r/innodb_information_schema.result mysql-test/r/innodb_trx_weight.result mysql-test/r/innodb_xtradb_bug317074.result mysql-test/t/innodb-analyze.test mysql-test/t/innodb-autoinc.test mysql-test/t/innodb-index.test mysql-test/t/innodb-index_ucs2.test mysql-test/t/innodb-lock.test mysql-test/t/innodb-master.opt mysql-test/t/innodb-replace.test mysql-test/t/innodb-semi-consistent-master.opt mysql-test/t/innodb-semi-consistent.test mysql-test/t/innodb-timeout.test mysql-test/t/innodb-use-sys-malloc-master.opt mysql-test/t/innodb-use-sys-malloc.test mysql-test/t/innodb-zip.test mysql-test/t/innodb.test mysql-test/t/innodb_bug34053.test mysql-test/t/innodb_bug34300.test mysql-test/t/innodb_bug35220.test mysql-test/t/innodb_bug36169.test mysql-test/t/innodb_bug36172.test mysql-test/t/innodb_bug40360.test mysql-test/t/innodb_bug41904.test mysql-test/t/innodb_information_schema.test mysql-test/t/innodb_trx_weight.test mysql-test/t/innodb_xtradb_bug317074.test storage/xtradb/ storage/xtradb/CMakeLists.txt storage/xtradb/COPYING.Google storage/xtradb/ChangeLog storage/xtradb/Makefile.am storage/xtradb/btr/ storage/xtradb/btr/btr0btr.c storage/xtradb/btr/btr0cur.c storage/xtradb/btr/btr0pcur.c storage/xtradb/btr/btr0sea.c storage/xtradb/buf/ storage/xtradb/buf/buf0buddy.c storage/xtradb/buf/buf0buf.c storage/xtradb/buf/buf0flu.c storage/xtradb/buf/buf0lru.c storage/xtradb/buf/buf0rea.c storage/xtradb/data/ storage/xtradb/data/data0data.c storage/xtradb/data/data0type.c storage/xtradb/dict/ storage/xtradb/dict/dict0boot.c storage/xtradb/dict/dict0crea.c storage/xtradb/dict/dict0dict.c storage/xtradb/dict/dict0load.c storage/xtradb/dict/dict0mem.c storage/xtradb/dyn/ storage/xtradb/dyn/dyn0dyn.c storage/xtradb/eval/ storage/xtradb/eval/eval0eval.c storage/xtradb/eval/eval0proc.c storage/xtradb/fil/ storage/xtradb/fil/fil0fil.c storage/xtradb/fsp/ storage/xtradb/fsp/fsp0fsp.c storage/xtradb/fut/ storage/xtradb/fut/fut0fut.c storage/xtradb/fut/fut0lst.c storage/xtradb/ha/ storage/xtradb/ha/ha0ha.c storage/xtradb/ha/ha0storage.c storage/xtradb/ha/hash0hash.c storage/xtradb/ha_innodb.def storage/xtradb/handler/ storage/xtradb/handler/ha_innodb.cc storage/xtradb/handler/ha_innodb.h storage/xtradb/handler/handler0alter.cc storage/xtradb/handler/handler0vars.h storage/xtradb/handler/i_s.cc storage/xtradb/handler/i_s.h storage/xtradb/handler/innodb_patch_info.h storage/xtradb/handler/mysql_addons.cc storage/xtradb/handler/win_delay_loader.cc storage/xtradb/ibuf/ storage/xtradb/ibuf/ibuf0ibuf.c storage/xtradb/include/ storage/xtradb/include/btr0btr.h storage/xtradb/include/btr0btr.ic storage/xtradb/include/btr0cur.h storage/xtradb/include/btr0cur.ic storage/xtradb/include/btr0pcur.h storage/xtradb/include/btr0pcur.ic storage/xtradb/include/btr0sea.h storage/xtradb/include/btr0sea.ic storage/xtradb/include/btr0types.h storage/xtradb/include/buf0buddy.h storage/xtradb/include/buf0buddy.ic storage/xtradb/include/buf0buf.h storage/xtradb/include/buf0buf.ic storage/xtradb/include/buf0flu.h storage/xtradb/include/buf0flu.ic storage/xtradb/include/buf0lru.h storage/xtradb/include/buf0lru.ic storage/xtradb/include/buf0rea.h storage/xtradb/include/buf0types.h storage/xtradb/include/data0data.h storage/xtradb/include/data0data.ic storage/xtradb/include/data0type.h storage/xtradb/include/data0type.ic storage/xtradb/include/data0types.h storage/xtradb/include/db0err.h storage/xtradb/include/dict0boot.h storage/xtradb/include/dict0boot.ic storage/xtradb/include/dict0crea.h storage/xtradb/include/dict0crea.ic storage/xtradb/include/dict0dict.h storage/xtradb/include/dict0dict.ic storage/xtradb/include/dict0load.h storage/xtradb/include/dict0load.ic storage/xtradb/include/dict0mem.h storage/xtradb/include/dict0mem.ic storage/xtradb/include/dict0types.h storage/xtradb/include/dyn0dyn.h storage/xtradb/include/dyn0dyn.ic storage/xtradb/include/eval0eval.h storage/xtradb/include/eval0eval.ic storage/xtradb/include/eval0proc.h storage/xtradb/include/eval0proc.ic storage/xtradb/include/fil0fil.h storage/xtradb/include/fsp0fsp.h storage/xtradb/include/fsp0fsp.ic storage/xtradb/include/fut0fut.h storage/xtradb/include/fut0fut.ic storage/xtradb/include/fut0lst.h storage/xtradb/include/fut0lst.ic storage/xtradb/include/ha0ha.h storage/xtradb/include/ha0ha.ic storage/xtradb/include/ha0storage.h storage/xtradb/include/ha0storage.ic storage/xtradb/include/ha_prototypes.h storage/xtradb/include/handler0alter.h storage/xtradb/include/hash0hash.h storage/xtradb/include/hash0hash.ic storage/xtradb/include/ibuf0ibuf.h storage/xtradb/include/ibuf0ibuf.ic storage/xtradb/include/ibuf0types.h storage/xtradb/include/lock0iter.h storage/xtradb/include/lock0lock.h storage/xtradb/include/lock0lock.ic storage/xtradb/include/lock0priv.h storage/xtradb/include/lock0priv.ic storage/xtradb/include/lock0types.h storage/xtradb/include/log0log.h storage/xtradb/include/log0log.ic storage/xtradb/include/log0recv.h storage/xtradb/include/log0recv.ic storage/xtradb/include/mach0data.h storage/xtradb/include/mach0data.ic storage/xtradb/include/mem0dbg.h storage/xtradb/include/mem0dbg.ic storage/xtradb/include/mem0mem.h storage/xtradb/include/mem0mem.ic storage/xtradb/include/mem0pool.h storage/xtradb/include/mem0pool.ic storage/xtradb/include/mtr0log.h storage/xtradb/include/mtr0log.ic storage/xtradb/include/mtr0mtr.h storage/xtradb/include/mtr0mtr.ic storage/xtradb/include/mtr0types.h storage/xtradb/include/mysql_addons.h storage/xtradb/include/os0file.h storage/xtradb/include/os0proc.h storage/xtradb/include/os0proc.ic storage/xtradb/include/os0sync.h storage/xtradb/include/os0sync.ic storage/xtradb/include/os0thread.h storage/xtradb/include/os0thread.ic storage/xtradb/include/page0cur.h storage/xtradb/include/page0cur.ic storage/xtradb/include/page0page.h storage/xtradb/include/page0page.ic storage/xtradb/include/page0types.h storage/xtradb/include/page0zip.h storage/xtradb/include/page0zip.ic storage/xtradb/include/pars0grm.h storage/xtradb/include/pars0opt.h storage/xtradb/include/pars0opt.ic storage/xtradb/include/pars0pars.h storage/xtradb/include/pars0pars.ic storage/xtradb/include/pars0sym.h storage/xtradb/include/pars0sym.ic storage/xtradb/include/pars0types.h storage/xtradb/include/que0que.h storage/xtradb/include/que0que.ic storage/xtradb/include/que0types.h storage/xtradb/include/read0read.h storage/xtradb/include/read0read.ic storage/xtradb/include/read0types.h storage/xtradb/include/rem0cmp.h storage/xtradb/include/rem0cmp.ic storage/xtradb/include/rem0rec.h storage/xtradb/include/rem0rec.ic storage/xtradb/include/rem0types.h storage/xtradb/include/row0ext.h storage/xtradb/include/row0ext.ic storage/xtradb/include/row0ins.h storage/xtradb/include/row0ins.ic storage/xtradb/include/row0merge.h storage/xtradb/include/row0mysql.h storage/xtradb/include/row0mysql.ic storage/xtradb/include/row0purge.h storage/xtradb/include/row0purge.ic storage/xtradb/include/row0row.h storage/xtradb/include/row0row.ic storage/xtradb/include/row0sel.h storage/xtradb/include/row0sel.ic storage/xtradb/include/row0types.h storage/xtradb/include/row0uins.h storage/xtradb/include/row0uins.ic storage/xtradb/include/row0umod.h storage/xtradb/include/row0umod.ic storage/xtradb/include/row0undo.h storage/xtradb/include/row0undo.ic storage/xtradb/include/row0upd.h storage/xtradb/include/row0upd.ic storage/xtradb/include/row0vers.h storage/xtradb/include/row0vers.ic storage/xtradb/include/srv0que.h storage/xtradb/include/srv0srv.h storage/xtradb/include/srv0srv.ic storage/xtradb/include/srv0start.h storage/xtradb/include/sync0arr.h storage/xtradb/include/sync0arr.ic storage/xtradb/include/sync0rw.h storage/xtradb/include/sync0rw.ic storage/xtradb/include/sync0sync.h storage/xtradb/include/sync0sync.ic storage/xtradb/include/sync0types.h storage/xtradb/include/thr0loc.h storage/xtradb/include/thr0loc.ic storage/xtradb/include/trx0i_s.h storage/xtradb/include/trx0purge.h storage/xtradb/include/trx0purge.ic storage/xtradb/include/trx0rec.h storage/xtradb/include/trx0rec.ic storage/xtradb/include/trx0roll.h storage/xtradb/include/trx0roll.ic storage/xtradb/include/trx0rseg.h storage/xtradb/include/trx0rseg.ic storage/xtradb/include/trx0sys.h storage/xtradb/include/trx0sys.ic storage/xtradb/include/trx0trx.h storage/xtradb/include/trx0trx.ic storage/xtradb/include/trx0types.h storage/xtradb/include/trx0undo.h storage/xtradb/include/trx0undo.ic storage/xtradb/include/trx0xa.h storage/xtradb/include/univ.i storage/xtradb/include/usr0sess.h storage/xtradb/include/usr0sess.ic storage/xtradb/include/usr0types.h storage/xtradb/include/ut0auxconf.h storage/xtradb/include/ut0byte.h storage/xtradb/include/ut0byte.ic storage/xtradb/include/ut0dbg.h storage/xtradb/include/ut0list.h storage/xtradb/include/ut0list.ic storage/xtradb/include/ut0lst.h storage/xtradb/include/ut0mem.h storage/xtradb/include/ut0mem.ic storage/xtradb/include/ut0rnd.h storage/xtradb/include/ut0rnd.ic storage/xtradb/include/ut0sort.h storage/xtradb/include/ut0ut.h storage/xtradb/include/ut0ut.ic storage/xtradb/include/ut0vec.h storage/xtradb/include/ut0vec.ic storage/xtradb/include/ut0wqueue.h storage/xtradb/lock/ storage/xtradb/lock/lock0iter.c storage/xtradb/lock/lock0lock.c storage/xtradb/log/ storage/xtradb/log/log0log.c storage/xtradb/log/log0recv.c storage/xtradb/mach/ storage/xtradb/mach/mach0data.c storage/xtradb/mem/ storage/xtradb/mem/mem0dbg.c storage/xtradb/mem/mem0mem.c storage/xtradb/mem/mem0pool.c storage/xtradb/mtr/ storage/xtradb/mtr/mtr0log.c storage/xtradb/mtr/mtr0mtr.c storage/xtradb/os/ storage/xtradb/os/os0file.c storage/xtradb/os/os0proc.c storage/xtradb/os/os0sync.c storage/xtradb/os/os0thread.c storage/xtradb/page/ storage/xtradb/page/page0cur.c storage/xtradb/page/page0page.c storage/xtradb/page/page0zip.c storage/xtradb/pars/ storage/xtradb/pars/lexyy.c storage/xtradb/pars/make_bison.sh storage/xtradb/pars/make_flex.sh storage/xtradb/pars/pars0grm.c storage/xtradb/pars/pars0grm.y storage/xtradb/pars/pars0lex.l storage/xtradb/pars/pars0opt.c storage/xtradb/pars/pars0pars.c storage/xtradb/pars/pars0sym.c storage/xtradb/plug.in storage/xtradb/que/ storage/xtradb/que/que0que.c storage/xtradb/read/ storage/xtradb/read/read0read.c storage/xtradb/rem/ storage/xtradb/rem/rem0cmp.c storage/xtradb/rem/rem0rec.c storage/xtradb/row/ storage/xtradb/row/row0ext.c storage/xtradb/row/row0ins.c storage/xtradb/row/row0merge.c storage/xtradb/row/row0mysql.c storage/xtradb/row/row0purge.c storage/xtradb/row/row0row.c storage/xtradb/row/row0sel.c storage/xtradb/row/row0uins.c storage/xtradb/row/row0umod.c storage/xtradb/row/row0undo.c storage/xtradb/row/row0upd.c storage/xtradb/row/row0vers.c storage/xtradb/scripts/ storage/xtradb/scripts/install_innodb_plugins.sql storage/xtradb/scripts/install_innodb_plugins_win.sql storage/xtradb/srv/ storage/xtradb/srv/srv0que.c storage/xtradb/srv/srv0srv.c storage/xtradb/srv/srv0start.c storage/xtradb/sync/ storage/xtradb/sync/sync0arr.c storage/xtradb/sync/sync0rw.c storage/xtradb/sync/sync0sync.c storage/xtradb/thr/ storage/xtradb/thr/thr0loc.c storage/xtradb/trx/ storage/xtradb/trx/trx0i_s.c storage/xtradb/trx/trx0purge.c storage/xtradb/trx/trx0rec.c storage/xtradb/trx/trx0roll.c storage/xtradb/trx/trx0rseg.c storage/xtradb/trx/trx0sys.c storage/xtradb/trx/trx0trx.c storage/xtradb/trx/trx0undo.c storage/xtradb/usr/ storage/xtradb/usr/usr0sess.c storage/xtradb/ut/ storage/xtradb/ut/ut0auxconf.c storage/xtradb/ut/ut0byte.c storage/xtradb/ut/ut0dbg.c storage/xtradb/ut/ut0list.c storage/xtradb/ut/ut0mem.c storage/xtradb/ut/ut0rnd.c storage/xtradb/ut/ut0ut.c storage/xtradb/ut/ut0vec.c storage/xtradb/ut/ut0wqueue.c storage/xtradb/win-plugin/ storage/xtradb/win-plugin/README storage/xtradb/win-plugin/win-plugin.diff renamed: storage/innobase/plug.in => storage/innobase/plug.in.disabled modified: .bzrignore CMakeLists.txt configure.in include/atomic/nolock.h include/my_sys.h libmysqld/CMakeLists.txt mysql-test/r/index_merge_innodb.result mysql-test/r/information_schema.result mysql-test/r/information_schema_all_engines.result mysql-test/r/mysqlbinlog_row_big.result mysql-test/r/row-checksum-old.result mysql-test/r/row-checksum.result mysql-test/r/variables-big.result mysql-test/t/information_schema.test mysql-test/t/mysqlbinlog_row_big.test mysql-test/t/partition_innodb.test mysql-test/t/type_bit_innodb.test mysql-test/t/variables-big.test mysys/mf_iocache2.c mysys/thr_mutex.c sql/log_event.cc sql/log_event.h sql/rpl_mi.cc sql/rpl_rli.cc sql/slave.cc === modified file '.bzrignore' --- a/.bzrignore 2009-04-25 09:04:38 +0000 +++ b/.bzrignore 2009-06-11 17:49:51 +0000 @@ -1444,6 +1444,21 @@ storage/innobase/ib_config.h storage/innobase/ib_config.h.in storage/innobase/mkinstalldirs storage/innobase/stamp-h1 +storage/xtradb/autom4te-2.53.cache/* +storage/xtradb/autom4te-2.53.cache/output.0 +storage/xtradb/autom4te-2.53.cache/requests +storage/xtradb/autom4te-2.53.cache/traces.0 +storage/xtradb/autom4te.cache/* +storage/xtradb/autom4te.cache/output.0 +storage/xtradb/autom4te.cache/requests +storage/xtradb/autom4te.cache/traces.0 +storage/xtradb/configure.lineno +storage/xtradb/conftest.s1 +storage/xtradb/conftest.subs +storage/xtradb/ib_config.h +storage/xtradb/ib_config.h.in +storage/xtradb/mkinstalldirs +storage/xtradb/stamp-h1 storage/maria/*.MAD storage/maria/*.MAI storage/maria/ma_rt_test === added file 'BUILD/compile-innodb' --- a/BUILD/compile-innodb 1970-01-01 00:00:00 +0000 +++ b/BUILD/compile-innodb 2009-06-09 13:19:13 +0000 @@ -0,0 +1,24 @@ +#! /bin/sh +# +# Copyright (c) 2006, 2009, Innobase Oy. All Rights Reserved. +# +# This program is free software; you can redistribute it and/or modify it under +# the terms of the GNU General Public License as published by the Free Software +# Foundation; version 2 of the License. +# +# This program is distributed in the hope that it will be useful, but WITHOUT +# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License along with +# this program; if not, write to the Free Software Foundation, Inc., 59 Temple +# Place, Suite 330, Boston, MA 02111-1307 USA +# + +path=`dirname $0` +. "$path/SETUP.sh" + +extra_flags="$pentium_cflags $fast_cflags -g" +extra_configs="$pentium_configs $static_link --with-plugins=innobase" + +. "$path/FINISH.sh" === added file 'BUILD/compile-innodb-debug' --- a/BUILD/compile-innodb-debug 1970-01-01 00:00:00 +0000 +++ b/BUILD/compile-innodb-debug 2009-06-09 13:19:13 +0000 @@ -0,0 +1,24 @@ +#! /bin/sh +# +# Copyright (c) 2005, 2009, Innobase Oy. All Rights Reserved. +# +# This program is free software; you can redistribute it and/or modify it under +# the terms of the GNU General Public License as published by the Free Software +# Foundation; version 2 of the License. +# +# This program is distributed in the hope that it will be useful, but WITHOUT +# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License along with +# this program; if not, write to the Free Software Foundation, Inc., 59 Temple +# Place, Suite 330, Boston, MA 02111-1307 USA +# + +path=`dirname $0` +. "$path/SETUP.sh" $@ --with-debug=full + +extra_flags="$pentium_cflags $debug_cflags" +extra_configs="$pentium_configs $debug_configs --with-plugins=innobase" + +. "$path/FINISH.sh" === modified file 'CMakeLists.txt' --- a/CMakeLists.txt 2009-04-25 09:04:38 +0000 +++ b/CMakeLists.txt 2009-06-11 17:49:51 +0000 @@ -263,7 +263,7 @@ IF(WITH_FEDERATED_STORAGE_ENGINE) ADD_SUBDIRECTORY(storage/federated) ENDIF(WITH_FEDERATED_STORAGE_ENGINE) IF(WITH_INNOBASE_STORAGE_ENGINE) - ADD_SUBDIRECTORY(storage/innobase) + ADD_SUBDIRECTORY(storage/xtradb) ENDIF(WITH_INNOBASE_STORAGE_ENGINE) IF(WITH_MARIA_STORAGE_ENGINE) ADD_SUBDIRECTORY(storage/maria) === modified file 'configure.in' --- a/configure.in 2009-05-22 12:38:50 +0000 +++ b/configure.in 2009-06-11 17:49:51 +0000 @@ -1729,6 +1729,30 @@ then fi fi +AC_CACHE_CHECK([whether the compiler provides atomic builtins], + [mysql_cv_gcc_atomic_builtins], [AC_TRY_RUN([ + int main() + { + int foo= -10; int bar= 10; + if (!__sync_fetch_and_add(&foo, bar) || foo) + return -1; + bar= __sync_lock_test_and_set(&foo, bar); + if (bar || foo != 10) + return -1; + bar= __sync_val_compare_and_swap(&bar, foo, 15); + if (bar) + return -1; + return 0; + } +], [mysql_cv_gcc_atomic_builtins=yes], + [mysql_cv_gcc_atomic_builtins=no], + [mysql_cv_gcc_atomic_builtins=no])]) + +if test "x$mysql_cv_gcc_atomic_builtins" = xyes; then + AC_DEFINE(HAVE_GCC_ATOMIC_BUILTINS, 1, + [Define to 1 if compiler provides atomic builtins.]) +fi + AC_ARG_WITH([atomic-ops], AC_HELP_STRING([--with-atomic-ops=rwlocks|smp|up], [Implement atomic operations using pthread rwlocks or atomic CPU @@ -1742,28 +1766,9 @@ case "$with_atomic_ops" in [Use pthread rwlocks for atomic ops]) ;; "smp") ;; "") - AC_CACHE_CHECK([whether the compiler provides atomic builtins], - [mysql_cv_gcc_atomic_builtins], [AC_TRY_RUN([ - int main() - { - int foo= -10; int bar= 10; - if (!__sync_fetch_and_add(&foo, bar) || foo) - return -1; - bar= __sync_lock_test_and_set(&foo, bar); - if (bar || foo != 10) - return -1; - bar= __sync_val_compare_and_swap(&bar, foo, 15); - if (bar) - return -1; - return 0; - } - ], [mysql_cv_gcc_atomic_builtins=yes_but_disabled], - [mysql_cv_gcc_atomic_builtins=no], - [mysql_cv_gcc_atomic_builtins=no])]) - - if test "x$mysql_cv_gcc_atomic_builtins" = xyes; then - AC_DEFINE(HAVE_GCC_ATOMIC_BUILTINS, 1, - [Define to 1 if compiler provides atomic builtins.]) + if test "x$mysql_cv_gcc_atomic_builtins" = xyes_but_disabled; then + AC_DEFINE([MY_ATOMIC_MODE_GCC_BUILTINS], [1], + [Use GCC atomic builtins for atomic ops]) fi ;; *) AC_MSG_ERROR(["$with_atomic_ops" is not a valid value for --with-atomic-ops]) ;; === modified file 'include/atomic/nolock.h' --- a/include/atomic/nolock.h 2008-02-05 15:47:11 +0000 +++ b/include/atomic/nolock.h 2009-06-10 09:13:53 +0000 @@ -14,7 +14,7 @@ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #if defined(__i386__) || defined(_MSC_VER) || \ - defined(__x86_64__) || defined(HAVE_GCC_ATOMIC_BUILTINS) + defined(__x86_64__) || defined(MY_ATOMIC_MODE_GCC_BUILTINS) # ifdef MY_ATOMIC_MODE_DUMMY # define LOCK_prefix "" @@ -22,7 +22,7 @@ # define LOCK_prefix "lock" # endif -# ifdef HAVE_GCC_ATOMIC_BUILTINS +# ifdef MY_ATOMIC_MODE_GCC_BUILTINS # include "gcc_builtins.h" # elif __GNUC__ # include "x86-gcc.h" === modified file 'include/my_sys.h' --- a/include/my_sys.h 2009-05-22 12:38:50 +0000 +++ b/include/my_sys.h 2009-06-11 17:49:51 +0000 @@ -791,6 +791,9 @@ extern size_t my_b_gets(IO_CACHE *info, extern my_off_t my_b_filelength(IO_CACHE *info); extern size_t my_b_printf(IO_CACHE *info, const char* fmt, ...); extern size_t my_b_vprintf(IO_CACHE *info, const char* fmt, va_list ap); +extern int init_strvar_from_file(char *var, int max_size, IO_CACHE *f, + const char *default_val); +extern int init_intvar_from_file(int* var, IO_CACHE* f, int default_val); extern my_bool open_cached_file(IO_CACHE *cache,const char *dir, const char *prefix, size_t cache_size, myf cache_myflags); === modified file 'libmysqld/CMakeLists.txt' --- a/libmysqld/CMakeLists.txt 2009-04-25 10:05:32 +0000 +++ b/libmysqld/CMakeLists.txt 2009-06-11 17:49:51 +0000 @@ -132,9 +132,9 @@ IF(WITH_FEDERATED_STORAGE_ENGINE) ENDIF(WITH_FEDERATED_STORAGE_ENGINE) IF(WITH_INNOBASE_STORAGE_ENGINE) - INCLUDE(${CMAKE_SOURCE_DIR}/storage/innobase/CMakeLists.txt) + INCLUDE(${CMAKE_SOURCE_DIR}/storage/xtradb/CMakeLists.txt) FOREACH(rpath ${INNOBASE_SOURCES}) - SET(LIB_SOURCES ${LIB_SOURCES} ../storage/innobase/${rpath}) + SET(LIB_SOURCES ${LIB_SOURCES} ../storage/xtradb/${rpath}) ENDFOREACH(rpath) ENDIF(WITH_INNOBASE_STORAGE_ENGINE) === added file 'mysql-test/include/ctype_innodb_like.inc' --- a/mysql-test/include/ctype_innodb_like.inc 1970-01-01 00:00:00 +0000 +++ b/mysql-test/include/ctype_innodb_like.inc 2009-06-09 13:19:13 +0000 @@ -0,0 +1,21 @@ +# +# Bug#11650: LIKE pattern matching using prefix index +# doesn't return correct result +# +--disable_warnings +# +# This query creates a column using +# character_set_connection and +# collation_connection. +# +create table t1 engine=innodb select repeat('a',50) as c1; +--enable_warnings +alter table t1 add index(c1(5)); + +insert into t1 values ('abcdefg'),('abcde100'),('abcde110'),('abcde111'); +select collation(c1) from t1 limit 1; +select c1 from t1 where c1 like 'abcdef%' order by c1; +select c1 from t1 where c1 like 'abcde1%' order by c1; +select c1 from t1 where c1 like 'abcde11%' order by c1; +select c1 from t1 where c1 like 'abcde111%' order by c1; +drop table t1; === removed file 'mysql-test/include/ctype_innodb_like.inc' --- a/mysql-test/include/ctype_innodb_like.inc 2005-07-06 12:16:22 +0000 +++ b/mysql-test/include/ctype_innodb_like.inc 1970-01-01 00:00:00 +0000 @@ -1,21 +0,0 @@ -# -# Bug#11650: LIKE pattern matching using prefix index -# doesn't return correct result -# ---disable_warnings -# -# This query creates a column using -# character_set_connection and -# collation_connection. -# -create table t1 engine=innodb select repeat('a',50) as c1; ---enable_warnings -alter table t1 add index(c1(5)); - -insert into t1 values ('abcdefg'),('abcde100'),('abcde110'),('abcde111'); -select collation(c1) from t1 limit 1; -select c1 from t1 where c1 like 'abcdef%' order by c1; -select c1 from t1 where c1 like 'abcde1%' order by c1; -select c1 from t1 where c1 like 'abcde11%' order by c1; -select c1 from t1 where c1 like 'abcde111%' order by c1; -drop table t1; === added file 'mysql-test/include/have_innodb.inc' --- a/mysql-test/include/have_innodb.inc 1970-01-01 00:00:00 +0000 +++ b/mysql-test/include/have_innodb.inc 2009-06-09 13:19:13 +0000 @@ -0,0 +1,4 @@ +disable_query_log; +--require r/true.require +select (support = 'YES' or support = 'DEFAULT' or support = 'ENABLED') as `TRUE` from information_schema.engines where engine = 'innodb'; +enable_query_log; === removed file 'mysql-test/include/have_innodb.inc' --- a/mysql-test/include/have_innodb.inc 2008-07-04 18:48:25 +0000 +++ b/mysql-test/include/have_innodb.inc 1970-01-01 00:00:00 +0000 @@ -1,4 +0,0 @@ -disable_query_log; ---require r/true.require -select (support = 'YES' or support = 'DEFAULT' or support = 'ENABLED') as `TRUE` from information_schema.engines where engine = 'innodb'; -enable_query_log; === added file 'mysql-test/include/innodb-index.inc' --- a/mysql-test/include/innodb-index.inc 1970-01-01 00:00:00 +0000 +++ b/mysql-test/include/innodb-index.inc 2009-06-09 13:19:13 +0000 @@ -0,0 +1,26 @@ +--eval create table t1(a int not null, b int, c char(10), d varchar(20), primary key (a)) engine = innodb default charset=$charset +insert into t1 values (1,1,'ab','ab'),(2,2,'ac','ac'),(3,2,'ad','ad'),(4,4,'afe','afe'); +commit; +--error ER_DUP_ENTRY +alter table t1 add unique index (b); +insert into t1 values(8,9,'fff','fff'); +select * from t1; +show create table t1; +alter table t1 add index (b); +insert into t1 values(10,10,'kkk','iii'); +select * from t1; +select * from t1 force index(b) order by b; +explain select * from t1 force index(b) order by b; +show create table t1; +alter table t1 add unique index (c), add index (d); +insert into t1 values(11,11,'aaa','mmm'); +select * from t1; +select * from t1 force index(b) order by b; +select * from t1 force index(c) order by c; +select * from t1 force index(d) order by d; +explain select * from t1 force index(b) order by b; +explain select * from t1 force index(c) order by c; +explain select * from t1 force index(d) order by d; +show create table t1; +check table t1; +drop table t1; === added file 'mysql-test/include/innodb_trx_weight.inc' --- a/mysql-test/include/innodb_trx_weight.inc 1970-01-01 00:00:00 +0000 +++ b/mysql-test/include/innodb_trx_weight.inc 2009-06-09 13:19:13 +0000 @@ -0,0 +1,51 @@ +-- connect (con1,localhost,root,,) +-- connect (con2,localhost,root,,) + +-- connection con1 +SET autocommit=0; +SELECT * FROM t1 FOR UPDATE; +-- if ($con1_extra_sql_present) { + -- eval $con1_extra_sql +-- } + +-- connection con2 +SET autocommit=0; +SELECT * FROM t2 FOR UPDATE; +-- if ($con2_extra_sql_present) { + -- eval $con2_extra_sql +-- } + +-- if ($con1_should_be_rolledback) { + -- connection con1 + -- send + INSERT INTO t2 VALUES (0); + + -- connection con2 + INSERT INTO t1 VALUES (0); + ROLLBACK; + + -- connection con1 + -- error ER_LOCK_DEADLOCK + -- reap +-- } +# else +-- if (!$con1_should_be_rolledback) { + -- connection con2 + -- send + INSERT INTO t1 VALUES (0); + + -- connection con1 + INSERT INTO t2 VALUES (0); + ROLLBACK; + + -- connection con2 + -- error ER_LOCK_DEADLOCK + -- reap +-- } + +-- connection default + +DELETE FROM t5_nontrans; + +-- disconnect con1 +-- disconnect con2 === removed file 'mysql-test/include/innodb_trx_weight.inc' --- a/mysql-test/include/innodb_trx_weight.inc 2007-07-10 11:37:43 +0000 +++ b/mysql-test/include/innodb_trx_weight.inc 1970-01-01 00:00:00 +0000 @@ -1,51 +0,0 @@ --- connect (con1,localhost,root,,) --- connect (con2,localhost,root,,) - --- connection con1 -SET autocommit=0; -SELECT * FROM t1 FOR UPDATE; --- if ($con1_extra_sql_present) { - -- eval $con1_extra_sql --- } - --- connection con2 -SET autocommit=0; -SELECT * FROM t2 FOR UPDATE; --- if ($con2_extra_sql_present) { - -- eval $con2_extra_sql --- } - --- if ($con1_should_be_rolledback) { - -- connection con1 - -- send - INSERT INTO t2 VALUES (0); - - -- connection con2 - INSERT INTO t1 VALUES (0); - ROLLBACK; - - -- connection con1 - -- error ER_LOCK_DEADLOCK - -- reap --- } -# else --- if (!$con1_should_be_rolledback) { - -- connection con2 - -- send - INSERT INTO t1 VALUES (0); - - -- connection con1 - INSERT INTO t2 VALUES (0); - ROLLBACK; - - -- connection con2 - -- error ER_LOCK_DEADLOCK - -- reap --- } - --- connection default - -DELETE FROM t5_nontrans; - --- disconnect con1 --- disconnect con2 === modified file 'mysql-test/r/index_merge_innodb.result' --- a/mysql-test/r/index_merge_innodb.result 2006-09-18 14:55:56 +0000 +++ b/mysql-test/r/index_merge_innodb.result 2009-06-09 13:19:13 +0000 @@ -111,7 +111,7 @@ count(*) explain select count(*) from t1 where key1a = 2 and key1b is null and key2a = 2 and key2b is null; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 index_merge i1,i2 i1,i2 10,10 NULL 4 Using intersect(i1,i2); Using where; Using index +1 SIMPLE t1 index_merge i1,i2 i1,i2 10,10 NULL 3 Using intersect(i1,i2); Using where; Using index select count(*) from t1 where key1a = 2 and key1b is null and key2a = 2 and key2b is null; count(*) @@ -119,7 +119,7 @@ count(*) explain select count(*) from t1 where key1a = 2 and key1b is null and key3a = 2 and key3b is null; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 index_merge i1,i3 i1,i3 10,10 NULL 4 Using intersect(i1,i3); Using where; Using index +1 SIMPLE t1 index_merge i1,i3 i1,i3 10,10 NULL 3 Using intersect(i1,i3); Using where; Using index select count(*) from t1 where key1a = 2 and key1b is null and key3a = 2 and key3b is null; count(*) === modified file 'mysql-test/r/information_schema.result' --- a/mysql-test/r/information_schema.result 2009-05-19 09:28:05 +0000 +++ b/mysql-test/r/information_schema.result 2009-06-11 17:49:51 +0000 @@ -42,7 +42,7 @@ WHERE table_schema IN ('mysql', 'INFORMA table_name<>'ndb_binlog_index' AND table_name<>'ndb_apply_status' AND NOT (table_schema = 'INFORMATION_SCHEMA' AND table_name LIKE 'PBXT_%'); -select * from v1; +select * from v1 ORDER BY c COLLATE utf8_bin; c CHARACTER_SETS COLLATIONS @@ -54,6 +54,17 @@ EVENTS FILES GLOBAL_STATUS GLOBAL_VARIABLES +INNODB_BUFFER_POOL_PAGES +INNODB_BUFFER_POOL_PAGES_BLOB +INNODB_BUFFER_POOL_PAGES_INDEX +INNODB_CMP +INNODB_CMPMEM +INNODB_CMPMEM_RESET +INNODB_CMP_RESET +INNODB_LOCKS +INNODB_LOCK_WAITS +INNODB_RSEG +INNODB_TRX KEY_COLUMN_USAGE PARTITIONS PLUGINS @@ -72,6 +83,7 @@ TABLE_PRIVILEGES TRIGGERS USER_PRIVILEGES VIEWS +XTRADB_ENHANCEMENTS columns_priv db event @@ -87,6 +99,11 @@ proc procs_priv servers slow_log +t1 +t2 +t3 +t4 +t5 tables_priv time_zone time_zone_leap_second @@ -94,11 +111,6 @@ time_zone_name time_zone_transition time_zone_transition_type user -t1 -t4 -t2 -t3 -t5 v1 select c,table_name from v1 inner join information_schema.TABLES v2 on (v1.c=v2.table_name) @@ -800,6 +812,8 @@ TABLES CREATE_TIME datetime TABLES UPDATE_TIME datetime TABLES CHECK_TIME datetime TRIGGERS CREATED datetime +INNODB_TRX trx_started datetime +INNODB_TRX trx_wait_started datetime event execute_at datetime event last_executed datetime event starts datetime @@ -848,6 +862,7 @@ TABLES TABLE_NAME select TABLE_CONSTRAINTS TABLE_NAME select TABLE_PRIVILEGES TABLE_NAME select VIEWS TABLE_NAME select +INNODB_BUFFER_POOL_PAGES_INDEX table_name select delete from mysql.user where user='mysqltest_4'; delete from mysql.db where user='mysqltest_4'; flush privileges; @@ -1223,12 +1238,12 @@ DROP PROCEDURE p1; DROP USER mysql_bug20230@localhost; SELECT MAX(table_name) FROM information_schema.tables WHERE table_schema IN ('mysql', 'INFORMATION_SCHEMA', 'test'); MAX(table_name) -VIEWS +XTRADB_ENHANCEMENTS SELECT table_name from information_schema.tables WHERE table_name=(SELECT MAX(table_name) FROM information_schema.tables WHERE table_schema IN ('mysql', 'INFORMATION_SCHEMA', 'test')); table_name -VIEWS +XTRADB_ENHANCEMENTS DROP TABLE IF EXISTS bug23037; DROP FUNCTION IF EXISTS get_value; SELECT COLUMN_NAME, MD5(COLUMN_DEFAULT), LENGTH(COLUMN_DEFAULT) FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME='bug23037'; === modified file 'mysql-test/r/information_schema_all_engines.result' --- a/mysql-test/r/information_schema_all_engines.result 2009-04-08 16:55:26 +0000 +++ b/mysql-test/r/information_schema_all_engines.result 2009-06-11 12:53:26 +0000 @@ -29,7 +29,19 @@ TABLE_PRIVILEGES TRIGGERS USER_PRIVILEGES VIEWS +INNODB_BUFFER_POOL_PAGES PBXT_STATISTICS +INNODB_CMP +INNODB_RSEG +XTRADB_ENHANCEMENTS +INNODB_BUFFER_POOL_PAGES_INDEX +INNODB_BUFFER_POOL_PAGES_BLOB +INNODB_TRX +INNODB_CMP_RESET +INNODB_LOCK_WAITS +INNODB_CMPMEM_RESET +INNODB_LOCKS +INNODB_CMPMEM SELECT t.table_name, c1.column_name FROM information_schema.tables t INNER JOIN @@ -73,7 +85,19 @@ TABLE_PRIVILEGES TABLE_SCHEMA TRIGGERS TRIGGER_SCHEMA USER_PRIVILEGES GRANTEE VIEWS TABLE_SCHEMA +INNODB_BUFFER_POOL_PAGES page_type PBXT_STATISTICS ID +INNODB_CMP page_size +INNODB_RSEG rseg_id +XTRADB_ENHANCEMENTS name +INNODB_BUFFER_POOL_PAGES_INDEX schema_name +INNODB_BUFFER_POOL_PAGES_BLOB space_id +INNODB_TRX trx_id +INNODB_CMP_RESET page_size +INNODB_LOCK_WAITS requesting_trx_id +INNODB_CMPMEM_RESET page_size +INNODB_LOCKS lock_id +INNODB_CMPMEM page_size SELECT t.table_name, c1.column_name FROM information_schema.tables t INNER JOIN @@ -117,7 +141,19 @@ TABLE_PRIVILEGES TABLE_SCHEMA TRIGGERS TRIGGER_SCHEMA USER_PRIVILEGES GRANTEE VIEWS TABLE_SCHEMA +INNODB_BUFFER_POOL_PAGES page_type PBXT_STATISTICS ID +INNODB_CMP page_size +INNODB_RSEG rseg_id +XTRADB_ENHANCEMENTS name +INNODB_BUFFER_POOL_PAGES_INDEX schema_name +INNODB_BUFFER_POOL_PAGES_BLOB space_id +INNODB_TRX trx_id +INNODB_CMP_RESET page_size +INNODB_LOCK_WAITS requesting_trx_id +INNODB_CMPMEM_RESET page_size +INNODB_LOCKS lock_id +INNODB_CMPMEM page_size select 1 as f1 from information_schema.tables where "CHARACTER_SETS"= (select cast(table_name as char) from information_schema.tables order by table_name limit 1) limit 1; @@ -149,6 +185,17 @@ EVENTS information_schema.EVENTS 1 FILES information_schema.FILES 1 GLOBAL_STATUS information_schema.GLOBAL_STATUS 1 GLOBAL_VARIABLES information_schema.GLOBAL_VARIABLES 1 +INNODB_BUFFER_POOL_PAGES information_schema.INNODB_BUFFER_POOL_PAGES 1 +INNODB_BUFFER_POOL_PAGES_BLOB information_schema.INNODB_BUFFER_POOL_PAGES_BLOB 1 +INNODB_BUFFER_POOL_PAGES_INDEX information_schema.INNODB_BUFFER_POOL_PAGES_INDEX 1 +INNODB_CMP information_schema.INNODB_CMP 1 +INNODB_CMPMEM information_schema.INNODB_CMPMEM 1 +INNODB_CMPMEM_RESET information_schema.INNODB_CMPMEM_RESET 1 +INNODB_CMP_RESET information_schema.INNODB_CMP_RESET 1 +INNODB_LOCKS information_schema.INNODB_LOCKS 1 +INNODB_LOCK_WAITS information_schema.INNODB_LOCK_WAITS 1 +INNODB_RSEG information_schema.INNODB_RSEG 1 +INNODB_TRX information_schema.INNODB_TRX 1 KEY_COLUMN_USAGE information_schema.KEY_COLUMN_USAGE 1 PARTITIONS information_schema.PARTITIONS 1 PBXT_STATISTICS information_schema.PBXT_STATISTICS 1 @@ -168,6 +215,7 @@ TABLE_PRIVILEGES information_schema.TABL TRIGGERS information_schema.TRIGGERS 1 USER_PRIVILEGES information_schema.USER_PRIVILEGES 1 VIEWS information_schema.VIEWS 1 +XTRADB_ENHANCEMENTS information_schema.XTRADB_ENHANCEMENTS 1 Database: information_schema +---------------------------------------+ | Tables | @@ -200,7 +248,19 @@ Database: information_schema | TRIGGERS | | USER_PRIVILEGES | | VIEWS | +| INNODB_BUFFER_POOL_PAGES | | PBXT_STATISTICS | +| INNODB_CMP | +| INNODB_RSEG | +| XTRADB_ENHANCEMENTS | +| INNODB_BUFFER_POOL_PAGES_INDEX | +| INNODB_BUFFER_POOL_PAGES_BLOB | +| INNODB_TRX | +| INNODB_CMP_RESET | +| INNODB_LOCK_WAITS | +| INNODB_CMPMEM_RESET | +| INNODB_LOCKS | +| INNODB_CMPMEM | +---------------------------------------+ Database: INFORMATION_SCHEMA +---------------------------------------+ @@ -234,7 +294,19 @@ Database: INFORMATION_SCHEMA | TRIGGERS | | USER_PRIVILEGES | | VIEWS | +| INNODB_BUFFER_POOL_PAGES | | PBXT_STATISTICS | +| INNODB_CMP | +| INNODB_RSEG | +| XTRADB_ENHANCEMENTS | +| INNODB_BUFFER_POOL_PAGES_INDEX | +| INNODB_BUFFER_POOL_PAGES_BLOB | +| INNODB_TRX | +| INNODB_CMP_RESET | +| INNODB_LOCK_WAITS | +| INNODB_CMPMEM_RESET | +| INNODB_LOCKS | +| INNODB_CMPMEM | +---------------------------------------+ Wildcard: inf_rmation_schema +--------------------+ @@ -244,5 +316,5 @@ Wildcard: inf_rmation_schema +--------------------+ SELECT table_schema, count(*) FROM information_schema.TABLES WHERE table_schema IN ('mysql', 'INFORMATION_SCHEMA', 'test', 'mysqltest') AND table_name<>'ndb_binlog_index' AND table_name<>'ndb_apply_status' GROUP BY TABLE_SCHEMA; table_schema count(*) -information_schema 29 +information_schema 41 mysql 22 === added file 'mysql-test/r/innodb-analyze.result' --- a/mysql-test/r/innodb-analyze.result 1970-01-01 00:00:00 +0000 +++ b/mysql-test/r/innodb-analyze.result 2009-06-09 13:19:13 +0000 @@ -0,0 +1,2 @@ +Variable_name Value +innodb_stats_sample_pages 1 === added file 'mysql-test/r/innodb-autoinc.result' --- a/mysql-test/r/innodb-autoinc.result 1970-01-01 00:00:00 +0000 +++ b/mysql-test/r/innodb-autoinc.result 2009-06-09 15:08:46 +0000 @@ -0,0 +1,869 @@ +drop table if exists t1; +CREATE TABLE t1 (c1 BIGINT PRIMARY KEY AUTO_INCREMENT, c2 VARCHAR(10)) ENGINE=InnoDB; +INSERT INTO t1 VALUES (9223372036854775807, null); +INSERT INTO t1 (c2) VALUES ('innodb'); +Got one of the listed errors +SELECT * FROM t1; +c1 c2 +9223372036854775807 NULL +DROP TABLE t1; +CREATE TABLE t1 (c1 TINYINT PRIMARY KEY AUTO_INCREMENT, c2 VARCHAR(10)) ENGINE=InnoDB; +INSERT INTO t1 VALUES (127, null); +INSERT INTO t1 (c2) VALUES ('innodb'); +Got one of the listed errors +SELECT * FROM t1; +c1 c2 +127 NULL +DROP TABLE t1; +CREATE TABLE t1 (c1 TINYINT UNSIGNED PRIMARY KEY AUTO_INCREMENT, c2 VARCHAR(10)) ENGINE=InnoDB; +INSERT INTO t1 VALUES (255, null); +INSERT INTO t1 (c2) VALUES ('innodb'); +Got one of the listed errors +SELECT * FROM t1; +c1 c2 +255 NULL +DROP TABLE t1; +CREATE TABLE t1 (c1 SMALLINT PRIMARY KEY AUTO_INCREMENT, c2 VARCHAR(10)) ENGINE=InnoDB; +INSERT INTO t1 VALUES (32767, null); +INSERT INTO t1 (c2) VALUES ('innodb'); +Got one of the listed errors +SELECT * FROM t1; +c1 c2 +32767 NULL +DROP TABLE t1; +CREATE TABLE t1 (c1 SMALLINT UNSIGNED PRIMARY KEY AUTO_INCREMENT, c2 VARCHAR(10)) ENGINE=InnoDB; +INSERT INTO t1 VALUES (65535, null); +INSERT INTO t1 (c2) VALUES ('innodb'); +Got one of the listed errors +SELECT * FROM t1; +c1 c2 +65535 NULL +DROP TABLE t1; +CREATE TABLE t1 (c1 MEDIUMINT PRIMARY KEY AUTO_INCREMENT, c2 VARCHAR(10)) ENGINE=InnoDB; +INSERT INTO t1 VALUES (8388607, null); +INSERT INTO t1 (c2) VALUES ('innodb'); +Got one of the listed errors +SELECT * FROM t1; +c1 c2 +8388607 NULL +DROP TABLE t1; +CREATE TABLE t1 (c1 MEDIUMINT UNSIGNED PRIMARY KEY AUTO_INCREMENT, c2 VARCHAR(10)) ENGINE=InnoDB; +INSERT INTO t1 VALUES (16777215, null); +INSERT INTO t1 (c2) VALUES ('innodb'); +Got one of the listed errors +SELECT * FROM t1; +c1 c2 +16777215 NULL +DROP TABLE t1; +CREATE TABLE t1 (c1 INT PRIMARY KEY AUTO_INCREMENT, c2 VARCHAR(10)) ENGINE=InnoDB; +INSERT INTO t1 VALUES (2147483647, null); +INSERT INTO t1 (c2) VALUES ('innodb'); +Got one of the listed errors +SELECT * FROM t1; +c1 c2 +2147483647 NULL +DROP TABLE t1; +CREATE TABLE t1 (c1 INT UNSIGNED PRIMARY KEY AUTO_INCREMENT, c2 VARCHAR(10)) ENGINE=InnoDB; +INSERT INTO t1 VALUES (4294967295, null); +INSERT INTO t1 (c2) VALUES ('innodb'); +Got one of the listed errors +SELECT * FROM t1; +c1 c2 +4294967295 NULL +DROP TABLE t1; +CREATE TABLE t1 (c1 BIGINT PRIMARY KEY AUTO_INCREMENT, c2 VARCHAR(10)) ENGINE=InnoDB; +INSERT INTO t1 VALUES (9223372036854775807, null); +INSERT INTO t1 (c2) VALUES ('innodb'); +Got one of the listed errors +SELECT * FROM t1; +c1 c2 +9223372036854775807 NULL +DROP TABLE t1; +CREATE TABLE t1 (c1 BIGINT UNSIGNED PRIMARY KEY AUTO_INCREMENT, c2 VARCHAR(10)) ENGINE=InnoDB; +INSERT INTO t1 VALUES (18446744073709551615, null); +INSERT INTO t1 (c2) VALUES ('innodb'); +Got one of the listed errors +SELECT * FROM t1; +c1 c2 +18446744073709551615 NULL +DROP TABLE t1; +CREATE TABLE t1(c1 INT PRIMARY KEY AUTO_INCREMENT) ENGINE=InnoDB; +INSERT INTO t1 VALUES (1), (2), (3); +INSERT INTO t1 VALUES (NULL), (NULL), (NULL); +SELECT c1 FROM t1; +c1 +1 +2 +3 +4 +5 +6 +SHOW CREATE TABLE t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `c1` int(11) NOT NULL AUTO_INCREMENT, + PRIMARY KEY (`c1`) +) ENGINE=InnoDB AUTO_INCREMENT=7 DEFAULT CHARSET=latin1 +TRUNCATE TABLE t1; +SHOW CREATE TABLE t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `c1` int(11) NOT NULL AUTO_INCREMENT, + PRIMARY KEY (`c1`) +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +INSERT INTO t1 VALUES (1), (2), (3); +INSERT INTO t1 VALUES (NULL), (NULL), (NULL); +SELECT c1 FROM t1; +c1 +1 +2 +3 +4 +5 +6 +SHOW CREATE TABLE t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `c1` int(11) NOT NULL AUTO_INCREMENT, + PRIMARY KEY (`c1`) +) ENGINE=InnoDB AUTO_INCREMENT=7 DEFAULT CHARSET=latin1 +DROP TABLE t1; +CREATE TABLE t1(c1 INT PRIMARY KEY AUTO_INCREMENT) ENGINE=InnoDB; +INSERT INTO t1 VALUES (1), (2), (3); +INSERT INTO t1 VALUES (NULL), (NULL), (NULL); +SELECT c1 FROM t1; +c1 +1 +2 +3 +4 +5 +6 +SHOW CREATE TABLE t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `c1` int(11) NOT NULL AUTO_INCREMENT, + PRIMARY KEY (`c1`) +) ENGINE=InnoDB AUTO_INCREMENT=7 DEFAULT CHARSET=latin1 +DELETE FROM t1; +SHOW CREATE TABLE t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `c1` int(11) NOT NULL AUTO_INCREMENT, + PRIMARY KEY (`c1`) +) ENGINE=InnoDB AUTO_INCREMENT=7 DEFAULT CHARSET=latin1 +INSERT INTO t1 VALUES (1), (2), (3); +INSERT INTO t1 VALUES (NULL), (NULL), (NULL); +SELECT c1 FROM t1; +c1 +1 +2 +3 +7 +8 +9 +SHOW CREATE TABLE t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `c1` int(11) NOT NULL AUTO_INCREMENT, + PRIMARY KEY (`c1`) +) ENGINE=InnoDB AUTO_INCREMENT=10 DEFAULT CHARSET=latin1 +DROP TABLE t1; +DROP TABLE IF EXISTS t1; +Warnings: +Note 1051 Unknown table 't1' +CREATE TABLE t1 (c1 INT AUTO_INCREMENT, c2 INT, PRIMARY KEY(c1)) ENGINE=InnoDB; +INSERT INTO t1 VALUES (NULL, 1); +DELETE FROM t1 WHERE c1 = 1; +INSERT INTO t1 VALUES (2,1); +INSERT INTO t1 VALUES (NULL,8); +SELECT * FROM t1; +c1 c2 +2 1 +3 8 +DROP TABLE t1; +DROP TABLE IF EXISTS t1; +Warnings: +Note 1051 Unknown table 't1' +CREATE TABLE t1 (c1 INT AUTO_INCREMENT, c2 INT, PRIMARY KEY(c1)) ENGINE=InnoDB; +INSERT INTO t1 VALUES (NULL, 1); +DELETE FROM t1 WHERE c1 = 1; +INSERT INTO t1 VALUES (2,1), (NULL, 8); +INSERT INTO t1 VALUES (NULL,9); +SELECT * FROM t1; +c1 c2 +2 1 +3 8 +5 9 +DROP TABLE t1; +SET @@SESSION.AUTO_INCREMENT_INCREMENT=100, @@SESSION.AUTO_INCREMENT_OFFSET=10; +SHOW VARIABLES LIKE "auto_inc%"; +Variable_name Value +auto_increment_increment 100 +auto_increment_offset 10 +DROP TABLE IF EXISTS t1; +Warnings: +Note 1051 Unknown table 't1' +CREATE TABLE t1 (c1 INT AUTO_INCREMENT, PRIMARY KEY(c1)) ENGINE=InnoDB; +INSERT INTO t1 VALUES (NULL),(5),(NULL); +INSERT INTO t1 VALUES (250),(NULL); +SELECT * FROM t1; +c1 +5 +10 +110 +250 +310 +INSERT INTO t1 VALUES (1000); +SET @@INSERT_ID=400; +INSERT INTO t1 VALUES(NULL),(NULL); +SELECT * FROM t1; +c1 +5 +10 +110 +250 +310 +400 +410 +1000 +DROP TABLE t1; +SET @@SESSION.AUTO_INCREMENT_INCREMENT=1, @@SESSION.AUTO_INCREMENT_OFFSET=1; +SET @@INSERT_ID=1; +SHOW VARIABLES LIKE "auto_inc%"; +Variable_name Value +auto_increment_increment 1 +auto_increment_offset 1 +DROP TABLE IF EXISTS t1; +Warnings: +Note 1051 Unknown table 't1' +CREATE TABLE t1 (c1 INT AUTO_INCREMENT, PRIMARY KEY(c1)) ENGINE=InnoDB; +INSERT INTO t1 VALUES(0); +SELECT * FROM t1; +c1 +1 +SET @@SESSION.AUTO_INCREMENT_INCREMENT=100, @@SESSION.AUTO_INCREMENT_OFFSET=10; +INSERT INTO t1 VALUES (-1), (NULL),(2),(NULL); +INSERT INTO t1 VALUES (250),(NULL); +SELECT * FROM t1; +c1 +-1 +1 +2 +10 +110 +250 +410 +SET @@INSERT_ID=400; +INSERT INTO t1 VALUES(NULL),(NULL); +Got one of the listed errors +SELECT * FROM t1; +c1 +-1 +1 +2 +10 +110 +250 +410 +DROP TABLE t1; +SET @@SESSION.AUTO_INCREMENT_INCREMENT=1, @@SESSION.AUTO_INCREMENT_OFFSET=1; +SET @@INSERT_ID=1; +SHOW VARIABLES LIKE "auto_inc%"; +Variable_name Value +auto_increment_increment 1 +auto_increment_offset 1 +DROP TABLE IF EXISTS t1; +Warnings: +Note 1051 Unknown table 't1' +CREATE TABLE t1 (c1 INT AUTO_INCREMENT, PRIMARY KEY(c1)) ENGINE=InnoDB; +INSERT INTO t1 VALUES(-1); +SELECT * FROM t1; +c1 +-1 +SET @@SESSION.AUTO_INCREMENT_INCREMENT=100, @@SESSION.AUTO_INCREMENT_OFFSET=10; +SHOW VARIABLES LIKE "auto_inc%"; +Variable_name Value +auto_increment_increment 100 +auto_increment_offset 10 +INSERT INTO t1 VALUES (-2), (NULL),(2),(NULL); +INSERT INTO t1 VALUES (250),(NULL); +SELECT * FROM t1; +c1 +-2 +-1 +1 +2 +10 +250 +310 +INSERT INTO t1 VALUES (1000); +SET @@INSERT_ID=400; +INSERT INTO t1 VALUES(NULL),(NULL); +SELECT * FROM t1; +c1 +-2 +-1 +1 +2 +10 +250 +310 +400 +410 +1000 +DROP TABLE t1; +SET @@SESSION.AUTO_INCREMENT_INCREMENT=1, @@SESSION.AUTO_INCREMENT_OFFSET=1; +SET @@INSERT_ID=1; +SHOW VARIABLES LIKE "auto_inc%"; +Variable_name Value +auto_increment_increment 1 +auto_increment_offset 1 +DROP TABLE IF EXISTS t1; +Warnings: +Note 1051 Unknown table 't1' +CREATE TABLE t1 (c1 INT UNSIGNED AUTO_INCREMENT, PRIMARY KEY(c1)) ENGINE=InnoDB; +INSERT INTO t1 VALUES(-1); +Warnings: +Warning 1264 Out of range value for column 'c1' at row 1 +SELECT * FROM t1; +c1 +1 +SET @@SESSION.AUTO_INCREMENT_INCREMENT=100, @@SESSION.AUTO_INCREMENT_OFFSET=10; +SHOW VARIABLES LIKE "auto_inc%"; +Variable_name Value +auto_increment_increment 100 +auto_increment_offset 10 +INSERT INTO t1 VALUES (-2); +Warnings: +Warning 1264 Out of range value for column 'c1' at row 1 +INSERT INTO t1 VALUES (NULL); +INSERT INTO t1 VALUES (2); +INSERT INTO t1 VALUES (NULL); +INSERT INTO t1 VALUES (250); +INSERT INTO t1 VALUES (NULL); +SELECT * FROM t1; +c1 +1 +2 +10 +110 +210 +250 +310 +INSERT INTO t1 VALUES (1000); +SET @@INSERT_ID=400; +INSERT INTO t1 VALUES(NULL); +INSERT INTO t1 VALUES(NULL); +SELECT * FROM t1; +c1 +1 +2 +10 +110 +210 +250 +310 +400 +1000 +1010 +DROP TABLE t1; +SET @@SESSION.AUTO_INCREMENT_INCREMENT=1, @@SESSION.AUTO_INCREMENT_OFFSET=1; +SET @@INSERT_ID=1; +SHOW VARIABLES LIKE "auto_inc%"; +Variable_name Value +auto_increment_increment 1 +auto_increment_offset 1 +DROP TABLE IF EXISTS t1; +Warnings: +Note 1051 Unknown table 't1' +CREATE TABLE t1 (c1 INT UNSIGNED AUTO_INCREMENT, PRIMARY KEY(c1)) ENGINE=InnoDB; +INSERT INTO t1 VALUES(-1); +Warnings: +Warning 1264 Out of range value for column 'c1' at row 1 +SELECT * FROM t1; +c1 +1 +SET @@SESSION.AUTO_INCREMENT_INCREMENT=100, @@SESSION.AUTO_INCREMENT_OFFSET=10; +SHOW VARIABLES LIKE "auto_inc%"; +Variable_name Value +auto_increment_increment 100 +auto_increment_offset 10 +INSERT INTO t1 VALUES (-2),(NULL),(2),(NULL); +Warnings: +Warning 1264 Out of range value for column 'c1' at row 1 +INSERT INTO t1 VALUES (250),(NULL); +SELECT * FROM t1; +c1 +1 +2 +10 +110 +210 +250 +410 +INSERT INTO t1 VALUES (1000); +SET @@INSERT_ID=400; +INSERT INTO t1 VALUES(NULL),(NULL); +Got one of the listed errors +SELECT * FROM t1; +c1 +1 +2 +10 +110 +210 +250 +410 +1000 +DROP TABLE t1; +SET @@SESSION.AUTO_INCREMENT_INCREMENT=1, @@SESSION.AUTO_INCREMENT_OFFSET=1; +SET @@INSERT_ID=1; +SHOW VARIABLES LIKE "auto_inc%"; +Variable_name Value +auto_increment_increment 1 +auto_increment_offset 1 +DROP TABLE IF EXISTS t1; +Warnings: +Note 1051 Unknown table 't1' +CREATE TABLE t1 (c1 BIGINT AUTO_INCREMENT, PRIMARY KEY(c1)) ENGINE=InnoDB; +INSERT INTO t1 VALUES(NULL); +INSERT INTO t1 VALUES (9223372036854775794); +SELECT * FROM t1; +c1 +1 +9223372036854775794 +SET @@SESSION.AUTO_INCREMENT_INCREMENT=2, @@SESSION.AUTO_INCREMENT_OFFSET=10; +SHOW VARIABLES LIKE "auto_inc%"; +Variable_name Value +auto_increment_increment 2 +auto_increment_offset 10 +INSERT INTO t1 VALUES (NULL),(NULL),(NULL),(NULL),(NULL),(NULL); +SELECT * FROM t1; +c1 +1 +9223372036854775794 +9223372036854775796 +9223372036854775798 +9223372036854775800 +9223372036854775802 +9223372036854775804 +9223372036854775806 +DROP TABLE t1; +SET @@SESSION.AUTO_INCREMENT_INCREMENT=1, @@SESSION.AUTO_INCREMENT_OFFSET=1; +SET @@INSERT_ID=1; +SHOW VARIABLES LIKE "auto_inc%"; +Variable_name Value +auto_increment_increment 1 +auto_increment_offset 1 +DROP TABLE IF EXISTS t1; +Warnings: +Note 1051 Unknown table 't1' +CREATE TABLE t1 (c1 BIGINT UNSIGNED AUTO_INCREMENT, PRIMARY KEY(c1)) ENGINE=InnoDB; +INSERT INTO t1 VALUES(NULL); +INSERT INTO t1 VALUES (18446744073709551603); +SELECT * FROM t1; +c1 +1 +18446744073709551603 +SET @@SESSION.AUTO_INCREMENT_INCREMENT=2, @@SESSION.AUTO_INCREMENT_OFFSET=10; +SHOW VARIABLES LIKE "auto_inc%"; +Variable_name Value +auto_increment_increment 2 +auto_increment_offset 10 +INSERT INTO t1 VALUES (NULL),(NULL),(NULL),(NULL),(NULL),(NULL); +SELECT * FROM t1; +c1 +1 +18446744073709551603 +18446744073709551604 +18446744073709551606 +18446744073709551608 +18446744073709551610 +18446744073709551612 +18446744073709551614 +DROP TABLE t1; +SET @@SESSION.AUTO_INCREMENT_INCREMENT=1, @@SESSION.AUTO_INCREMENT_OFFSET=1; +SET @@INSERT_ID=1; +SHOW VARIABLES LIKE "auto_inc%"; +Variable_name Value +auto_increment_increment 1 +auto_increment_offset 1 +DROP TABLE IF EXISTS t1; +Warnings: +Note 1051 Unknown table 't1' +CREATE TABLE t1 (c1 BIGINT UNSIGNED AUTO_INCREMENT, PRIMARY KEY(c1)) ENGINE=InnoDB; +INSERT INTO t1 VALUES(NULL); +INSERT INTO t1 VALUES (18446744073709551603); +SELECT * FROM t1; +c1 +1 +18446744073709551603 +SET @@SESSION.AUTO_INCREMENT_INCREMENT=5, @@SESSION.AUTO_INCREMENT_OFFSET=7; +SHOW VARIABLES LIKE "auto_inc%"; +Variable_name Value +auto_increment_increment 5 +auto_increment_offset 7 +INSERT INTO t1 VALUES (NULL),(NULL); +SELECT * FROM t1; +c1 +1 +18446744073709551603 +18446744073709551607 +18446744073709551612 +DROP TABLE t1; +SET @@SESSION.AUTO_INCREMENT_INCREMENT=1, @@SESSION.AUTO_INCREMENT_OFFSET=1; +SET @@INSERT_ID=1; +SHOW VARIABLES LIKE "auto_inc%"; +Variable_name Value +auto_increment_increment 1 +auto_increment_offset 1 +DROP TABLE IF EXISTS t1; +Warnings: +Note 1051 Unknown table 't1' +CREATE TABLE t1 (c1 BIGINT AUTO_INCREMENT, PRIMARY KEY(c1)) ENGINE=InnoDB; +INSERT INTO t1 VALUES(NULL); +INSERT INTO t1 VALUES(-9223372036854775806); +INSERT INTO t1 VALUES(-9223372036854775807); +INSERT INTO t1 VALUES(-9223372036854775808); +SELECT * FROM t1; +c1 +-9223372036854775808 +-9223372036854775807 +-9223372036854775806 +1 +SET @@SESSION.AUTO_INCREMENT_INCREMENT=3, @@SESSION.AUTO_INCREMENT_OFFSET=3; +SHOW VARIABLES LIKE "auto_inc%"; +Variable_name Value +auto_increment_increment 3 +auto_increment_offset 3 +INSERT INTO t1 VALUES (NULL),(NULL), (NULL); +SELECT * FROM t1; +c1 +-9223372036854775808 +-9223372036854775807 +-9223372036854775806 +1 +3 +6 +9 +DROP TABLE t1; +SET @@SESSION.AUTO_INCREMENT_INCREMENT=1, @@SESSION.AUTO_INCREMENT_OFFSET=1; +SET @@INSERT_ID=1; +SHOW VARIABLES LIKE "auto_inc%"; +Variable_name Value +auto_increment_increment 1 +auto_increment_offset 1 +DROP TABLE IF EXISTS t1; +Warnings: +Note 1051 Unknown table 't1' +CREATE TABLE t1 (c1 BIGINT UNSIGNED AUTO_INCREMENT, PRIMARY KEY(c1)) ENGINE=InnoDB; +INSERT INTO t1 VALUES(NULL); +INSERT INTO t1 VALUES (18446744073709551610); +SELECT * FROM t1; +c1 +1 +18446744073709551610 +SET @@SESSION.AUTO_INCREMENT_INCREMENT=1152921504606846976, @@SESSION.AUTO_INCREMENT_OFFSET=1152921504606846976; +Warnings: +Warning 1292 Truncated incorrect auto_increment_increment value: '1152921504606846976' +Warning 1292 Truncated incorrect auto_increment_offset value: '1152921504606846976' +SHOW VARIABLES LIKE "auto_inc%"; +Variable_name Value +auto_increment_increment 65535 +auto_increment_offset 65535 +INSERT INTO t1 VALUES (NULL); +SELECT * FROM t1; +c1 +1 +18446744073709551610 +18446744073709551615 +DROP TABLE t1; +SET @@SESSION.AUTO_INCREMENT_INCREMENT=1, @@SESSION.AUTO_INCREMENT_OFFSET=1; +SET @@INSERT_ID=1; +SHOW VARIABLES LIKE "auto_inc%"; +Variable_name Value +auto_increment_increment 1 +auto_increment_offset 1 +CREATE TABLE t1 (c1 DOUBLE NOT NULL AUTO_INCREMENT, c2 INT, PRIMARY KEY (c1)) ENGINE=InnoDB; +INSERT INTO t1 VALUES(NULL, 1); +INSERT INTO t1 VALUES(NULL, 2); +SELECT * FROM t1; +c1 c2 +1 1 +2 2 +ALTER TABLE t1 CHANGE c1 c1 SERIAL; +SELECT * FROM t1; +c1 c2 +1 1 +2 2 +INSERT INTO t1 VALUES(NULL, 3); +INSERT INTO t1 VALUES(NULL, 4); +SELECT * FROM t1; +c1 c2 +1 1 +2 2 +3 3 +4 4 +DROP TABLE IF EXISTS t1; +CREATE TABLE t1 (c1 FLOAT NOT NULL AUTO_INCREMENT, c2 INT, PRIMARY KEY (c1)) ENGINE=InnoDB; +INSERT INTO t1 VALUES(NULL, 1); +INSERT INTO t1 VALUES(NULL, 2); +SELECT * FROM t1; +c1 c2 +1 1 +2 2 +ALTER TABLE t1 CHANGE c1 c1 SERIAL; +SELECT * FROM t1; +c1 c2 +1 1 +2 2 +INSERT INTO t1 VALUES(NULL, 3); +INSERT INTO t1 VALUES(NULL, 4); +SELECT * FROM t1; +c1 c2 +1 1 +2 2 +3 3 +4 4 +DROP TABLE t1; +SET @@SESSION.AUTO_INCREMENT_INCREMENT=1, @@SESSION.AUTO_INCREMENT_OFFSET=5; +DROP TABLE IF EXISTS t1; +Warnings: +Note 1051 Unknown table 't1' +DROP TABLE IF EXISTS t2; +Warnings: +Note 1051 Unknown table 't2' +CREATE TABLE t1 ( +a INT(11) UNSIGNED NOT NULL AUTO_INCREMENT, +b INT(10) UNSIGNED NOT NULL, +c ENUM('FALSE','TRUE') DEFAULT NULL, +PRIMARY KEY (a)) ENGINE = InnoDB; +CREATE TABLE t2 ( +m INT(11) UNSIGNED NOT NULL AUTO_INCREMENT, +n INT(10) UNSIGNED NOT NULL, +o enum('FALSE','TRUE') DEFAULT NULL, +PRIMARY KEY (m)) ENGINE = InnoDB; +INSERT INTO t2 (n,o) VALUES +(1 , 'true'), (1 , 'false'), (2 , 'true'), (2 , 'false'), (3 , 'true'), +(3 , 'false'), (4 , 'true'), (4 , 'false'), (5 , 'true'), (5 , 'false'); +SHOW CREATE TABLE t2; +Table Create Table +t2 CREATE TABLE `t2` ( + `m` int(11) unsigned NOT NULL AUTO_INCREMENT, + `n` int(10) unsigned NOT NULL, + `o` enum('FALSE','TRUE') DEFAULT NULL, + PRIMARY KEY (`m`) +) ENGINE=InnoDB AUTO_INCREMENT=15 DEFAULT CHARSET=latin1 +INSERT INTO t1 (b,c) SELECT n,o FROM t2 ; +SHOW CREATE TABLE t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` int(11) unsigned NOT NULL AUTO_INCREMENT, + `b` int(10) unsigned NOT NULL, + `c` enum('FALSE','TRUE') DEFAULT NULL, + PRIMARY KEY (`a`) +) ENGINE=InnoDB AUTO_INCREMENT=13 DEFAULT CHARSET=latin1 +INSERT INTO t1 (b,c) SELECT n,o FROM t2 ; +SELECT * FROM t1; +a b c +1 1 TRUE +2 1 FALSE +3 2 TRUE +4 2 FALSE +5 3 TRUE +6 3 FALSE +7 4 TRUE +8 4 FALSE +9 5 TRUE +10 5 FALSE +13 1 TRUE +14 1 FALSE +15 2 TRUE +16 2 FALSE +17 3 TRUE +18 3 FALSE +19 4 TRUE +20 4 FALSE +21 5 TRUE +22 5 FALSE +SHOW CREATE TABLE t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` int(11) unsigned NOT NULL AUTO_INCREMENT, + `b` int(10) unsigned NOT NULL, + `c` enum('FALSE','TRUE') DEFAULT NULL, + PRIMARY KEY (`a`) +) ENGINE=InnoDB AUTO_INCREMENT=23 DEFAULT CHARSET=latin1 +INSERT INTO t1 (b,c) SELECT n,o FROM t2 WHERE o = 'false'; +SELECT * FROM t1; +a b c +1 1 TRUE +2 1 FALSE +3 2 TRUE +4 2 FALSE +5 3 TRUE +6 3 FALSE +7 4 TRUE +8 4 FALSE +9 5 TRUE +10 5 FALSE +13 1 TRUE +14 1 FALSE +15 2 TRUE +16 2 FALSE +17 3 TRUE +18 3 FALSE +19 4 TRUE +20 4 FALSE +21 5 TRUE +22 5 FALSE +23 1 FALSE +24 2 FALSE +25 3 FALSE +26 4 FALSE +27 5 FALSE +SHOW CREATE TABLE t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` int(11) unsigned NOT NULL AUTO_INCREMENT, + `b` int(10) unsigned NOT NULL, + `c` enum('FALSE','TRUE') DEFAULT NULL, + PRIMARY KEY (`a`) +) ENGINE=InnoDB AUTO_INCREMENT=30 DEFAULT CHARSET=latin1 +INSERT INTO t1 (b,c) SELECT n,o FROM t2 WHERE o = 'false'; +SELECT * FROM t1; +a b c +1 1 TRUE +2 1 FALSE +3 2 TRUE +4 2 FALSE +5 3 TRUE +6 3 FALSE +7 4 TRUE +8 4 FALSE +9 5 TRUE +10 5 FALSE +13 1 TRUE +14 1 FALSE +15 2 TRUE +16 2 FALSE +17 3 TRUE +18 3 FALSE +19 4 TRUE +20 4 FALSE +21 5 TRUE +22 5 FALSE +23 1 FALSE +24 2 FALSE +25 3 FALSE +26 4 FALSE +27 5 FALSE +30 1 FALSE +31 2 FALSE +32 3 FALSE +33 4 FALSE +34 5 FALSE +SHOW CREATE TABLE t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` int(11) unsigned NOT NULL AUTO_INCREMENT, + `b` int(10) unsigned NOT NULL, + `c` enum('FALSE','TRUE') DEFAULT NULL, + PRIMARY KEY (`a`) +) ENGINE=InnoDB AUTO_INCREMENT=37 DEFAULT CHARSET=latin1 +INSERT INTO t1 (b,c) SELECT n,o FROM t2 WHERE o = 'false'; +SHOW CREATE TABLE t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` int(11) unsigned NOT NULL AUTO_INCREMENT, + `b` int(10) unsigned NOT NULL, + `c` enum('FALSE','TRUE') DEFAULT NULL, + PRIMARY KEY (`a`) +) ENGINE=InnoDB AUTO_INCREMENT=44 DEFAULT CHARSET=latin1 +INSERT INTO t1 (b,c) SELECT n,o FROM t2 WHERE o = 'false'; +SHOW CREATE TABLE t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` int(11) unsigned NOT NULL AUTO_INCREMENT, + `b` int(10) unsigned NOT NULL, + `c` enum('FALSE','TRUE') DEFAULT NULL, + PRIMARY KEY (`a`) +) ENGINE=InnoDB AUTO_INCREMENT=51 DEFAULT CHARSET=latin1 +INSERT INTO t1 (b,c) SELECT n,o FROM t2 WHERE o = 'false'; +SELECT * FROM t1; +a b c +1 1 TRUE +2 1 FALSE +3 2 TRUE +4 2 FALSE +5 3 TRUE +6 3 FALSE +7 4 TRUE +8 4 FALSE +9 5 TRUE +10 5 FALSE +13 1 TRUE +14 1 FALSE +15 2 TRUE +16 2 FALSE +17 3 TRUE +18 3 FALSE +19 4 TRUE +20 4 FALSE +21 5 TRUE +22 5 FALSE +23 1 FALSE +24 2 FALSE +25 3 FALSE +26 4 FALSE +27 5 FALSE +30 1 FALSE +31 2 FALSE +32 3 FALSE +33 4 FALSE +34 5 FALSE +37 1 FALSE +38 2 FALSE +39 3 FALSE +40 4 FALSE +41 5 FALSE +44 1 FALSE +45 2 FALSE +46 3 FALSE +47 4 FALSE +48 5 FALSE +51 1 FALSE +52 2 FALSE +53 3 FALSE +54 4 FALSE +55 5 FALSE +SHOW CREATE TABLE t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` int(11) unsigned NOT NULL AUTO_INCREMENT, + `b` int(10) unsigned NOT NULL, + `c` enum('FALSE','TRUE') DEFAULT NULL, + PRIMARY KEY (`a`) +) ENGINE=InnoDB AUTO_INCREMENT=58 DEFAULT CHARSET=latin1 +DROP TABLE t1; +DROP TABLE t2; +DROP TABLE IF EXISTS t1; +Warnings: +Note 1051 Unknown table 't1' +DROP TABLE IF EXISTS t2; +Warnings: +Note 1051 Unknown table 't2' +CREATE TABLE t1( +c1 INT(10) UNSIGNED NOT NULL AUTO_INCREMENT +PRIMARY KEY) ENGINE=InnoDB; +INSERT INTO t1 VALUES (NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL); +CREATE TABLE t2( +c1 TINYINT(3) UNSIGNED NOT NULL AUTO_INCREMENT +PRIMARY KEY) ENGINE=InnoDB; +INSERT INTO t2 SELECT c1 FROM t1; +Got one of the listed errors +INSERT INTO t2 SELECT NULL FROM t1; +Got one of the listed errors +DROP TABLE t1; +DROP TABLE t2; === removed file 'mysql-test/r/innodb-autoinc.result' --- a/mysql-test/r/innodb-autoinc.result 2009-05-19 09:28:05 +0000 +++ b/mysql-test/r/innodb-autoinc.result 1970-01-01 00:00:00 +0000 @@ -1,870 +0,0 @@ -drop table if exists t1; -CREATE TABLE t1 (c1 BIGINT PRIMARY KEY AUTO_INCREMENT, c2 VARCHAR(10)) ENGINE=InnoDB; -INSERT INTO t1 VALUES (9223372036854775807, null); -INSERT INTO t1 (c2) VALUES ('innodb'); -Got one of the listed errors -SELECT * FROM t1; -c1 c2 -9223372036854775807 NULL -DROP TABLE t1; -CREATE TABLE t1 (c1 TINYINT PRIMARY KEY AUTO_INCREMENT, c2 VARCHAR(10)) ENGINE=InnoDB; -INSERT INTO t1 VALUES (127, null); -INSERT INTO t1 (c2) VALUES ('innodb'); -Got one of the listed errors -SELECT * FROM t1; -c1 c2 -127 NULL -DROP TABLE t1; -CREATE TABLE t1 (c1 TINYINT UNSIGNED PRIMARY KEY AUTO_INCREMENT, c2 VARCHAR(10)) ENGINE=InnoDB; -INSERT INTO t1 VALUES (255, null); -INSERT INTO t1 (c2) VALUES ('innodb'); -Got one of the listed errors -SELECT * FROM t1; -c1 c2 -255 NULL -DROP TABLE t1; -CREATE TABLE t1 (c1 SMALLINT PRIMARY KEY AUTO_INCREMENT, c2 VARCHAR(10)) ENGINE=InnoDB; -INSERT INTO t1 VALUES (32767, null); -INSERT INTO t1 (c2) VALUES ('innodb'); -Got one of the listed errors -SELECT * FROM t1; -c1 c2 -32767 NULL -DROP TABLE t1; -CREATE TABLE t1 (c1 SMALLINT UNSIGNED PRIMARY KEY AUTO_INCREMENT, c2 VARCHAR(10)) ENGINE=InnoDB; -INSERT INTO t1 VALUES (65535, null); -INSERT INTO t1 (c2) VALUES ('innodb'); -Got one of the listed errors -SELECT * FROM t1; -c1 c2 -65535 NULL -DROP TABLE t1; -CREATE TABLE t1 (c1 MEDIUMINT PRIMARY KEY AUTO_INCREMENT, c2 VARCHAR(10)) ENGINE=InnoDB; -INSERT INTO t1 VALUES (8388607, null); -INSERT INTO t1 (c2) VALUES ('innodb'); -Got one of the listed errors -SELECT * FROM t1; -c1 c2 -8388607 NULL -DROP TABLE t1; -CREATE TABLE t1 (c1 MEDIUMINT UNSIGNED PRIMARY KEY AUTO_INCREMENT, c2 VARCHAR(10)) ENGINE=InnoDB; -INSERT INTO t1 VALUES (16777215, null); -INSERT INTO t1 (c2) VALUES ('innodb'); -Got one of the listed errors -SELECT * FROM t1; -c1 c2 -16777215 NULL -DROP TABLE t1; -CREATE TABLE t1 (c1 INT PRIMARY KEY AUTO_INCREMENT, c2 VARCHAR(10)) ENGINE=InnoDB; -INSERT INTO t1 VALUES (2147483647, null); -INSERT INTO t1 (c2) VALUES ('innodb'); -Got one of the listed errors -SELECT * FROM t1; -c1 c2 -2147483647 NULL -DROP TABLE t1; -CREATE TABLE t1 (c1 INT UNSIGNED PRIMARY KEY AUTO_INCREMENT, c2 VARCHAR(10)) ENGINE=InnoDB; -INSERT INTO t1 VALUES (4294967295, null); -INSERT INTO t1 (c2) VALUES ('innodb'); -Got one of the listed errors -SELECT * FROM t1; -c1 c2 -4294967295 NULL -DROP TABLE t1; -CREATE TABLE t1 (c1 BIGINT PRIMARY KEY AUTO_INCREMENT, c2 VARCHAR(10)) ENGINE=InnoDB; -INSERT INTO t1 VALUES (9223372036854775807, null); -INSERT INTO t1 (c2) VALUES ('innodb'); -Got one of the listed errors -SELECT * FROM t1; -c1 c2 -9223372036854775807 NULL -DROP TABLE t1; -CREATE TABLE t1 (c1 BIGINT UNSIGNED PRIMARY KEY AUTO_INCREMENT, c2 VARCHAR(10)) ENGINE=InnoDB; -INSERT INTO t1 VALUES (18446744073709551615, null); -INSERT INTO t1 (c2) VALUES ('innodb'); -Got one of the listed errors -SELECT * FROM t1; -c1 c2 -18446744073709551615 NULL -DROP TABLE t1; -CREATE TABLE t1(c1 INT PRIMARY KEY AUTO_INCREMENT) ENGINE=InnoDB; -INSERT INTO t1 VALUES (1), (2), (3); -INSERT INTO t1 VALUES (NULL), (NULL), (NULL); -SELECT c1 FROM t1; -c1 -1 -2 -3 -4 -5 -6 -SHOW CREATE TABLE t1; -Table Create Table -t1 CREATE TABLE `t1` ( - `c1` int(11) NOT NULL AUTO_INCREMENT, - PRIMARY KEY (`c1`) -) ENGINE=InnoDB AUTO_INCREMENT=7 DEFAULT CHARSET=latin1 -TRUNCATE TABLE t1; -SHOW CREATE TABLE t1; -Table Create Table -t1 CREATE TABLE `t1` ( - `c1` int(11) NOT NULL AUTO_INCREMENT, - PRIMARY KEY (`c1`) -) ENGINE=InnoDB DEFAULT CHARSET=latin1 -INSERT INTO t1 VALUES (1), (2), (3); -INSERT INTO t1 VALUES (NULL), (NULL), (NULL); -SELECT c1 FROM t1; -c1 -1 -2 -3 -4 -5 -6 -SHOW CREATE TABLE t1; -Table Create Table -t1 CREATE TABLE `t1` ( - `c1` int(11) NOT NULL AUTO_INCREMENT, - PRIMARY KEY (`c1`) -) ENGINE=InnoDB AUTO_INCREMENT=7 DEFAULT CHARSET=latin1 -DROP TABLE t1; -CREATE TABLE t1(c1 INT PRIMARY KEY AUTO_INCREMENT) ENGINE=InnoDB; -INSERT INTO t1 VALUES (1), (2), (3); -INSERT INTO t1 VALUES (NULL), (NULL), (NULL); -SELECT c1 FROM t1; -c1 -1 -2 -3 -4 -5 -6 -SHOW CREATE TABLE t1; -Table Create Table -t1 CREATE TABLE `t1` ( - `c1` int(11) NOT NULL AUTO_INCREMENT, - PRIMARY KEY (`c1`) -) ENGINE=InnoDB AUTO_INCREMENT=7 DEFAULT CHARSET=latin1 -DELETE FROM t1; -SHOW CREATE TABLE t1; -Table Create Table -t1 CREATE TABLE `t1` ( - `c1` int(11) NOT NULL AUTO_INCREMENT, - PRIMARY KEY (`c1`) -) ENGINE=InnoDB AUTO_INCREMENT=7 DEFAULT CHARSET=latin1 -INSERT INTO t1 VALUES (1), (2), (3); -INSERT INTO t1 VALUES (NULL), (NULL), (NULL); -SELECT c1 FROM t1; -c1 -1 -2 -3 -7 -8 -9 -SHOW CREATE TABLE t1; -Table Create Table -t1 CREATE TABLE `t1` ( - `c1` int(11) NOT NULL AUTO_INCREMENT, - PRIMARY KEY (`c1`) -) ENGINE=InnoDB AUTO_INCREMENT=10 DEFAULT CHARSET=latin1 -DROP TABLE t1; -DROP TABLE IF EXISTS t1; -Warnings: -Note 1051 Unknown table 't1' -CREATE TABLE t1 (c1 INT AUTO_INCREMENT, c2 INT, PRIMARY KEY(c1)) ENGINE=InnoDB; -INSERT INTO t1 VALUES (NULL, 1); -DELETE FROM t1 WHERE c1 = 1; -INSERT INTO t1 VALUES (2,1); -INSERT INTO t1 VALUES (NULL,8); -SELECT * FROM t1; -c1 c2 -2 1 -3 8 -DROP TABLE t1; -DROP TABLE IF EXISTS t1; -Warnings: -Note 1051 Unknown table 't1' -CREATE TABLE t1 (c1 INT AUTO_INCREMENT, c2 INT, PRIMARY KEY(c1)) ENGINE=InnoDB; -INSERT INTO t1 VALUES (NULL, 1); -DELETE FROM t1 WHERE c1 = 1; -INSERT INTO t1 VALUES (2,1), (NULL, 8); -INSERT INTO t1 VALUES (NULL,9); -SELECT * FROM t1; -c1 c2 -2 1 -3 8 -5 9 -DROP TABLE t1; -SET @@SESSION.AUTO_INCREMENT_INCREMENT=100, @@SESSION.AUTO_INCREMENT_OFFSET=10; -SHOW VARIABLES LIKE "auto_inc%"; -Variable_name Value -auto_increment_increment 100 -auto_increment_offset 10 -DROP TABLE IF EXISTS t1; -Warnings: -Note 1051 Unknown table 't1' -CREATE TABLE t1 (c1 INT AUTO_INCREMENT, PRIMARY KEY(c1)) ENGINE=InnoDB; -INSERT INTO t1 VALUES (NULL),(5),(NULL); -INSERT INTO t1 VALUES (250),(NULL); -SELECT * FROM t1; -c1 -5 -10 -110 -250 -310 -INSERT INTO t1 VALUES (1000); -SET @@INSERT_ID=400; -INSERT INTO t1 VALUES(NULL),(NULL); -SELECT * FROM t1; -c1 -5 -10 -110 -250 -310 -400 -410 -1000 -DROP TABLE t1; -SET @@SESSION.AUTO_INCREMENT_INCREMENT=1, @@SESSION.AUTO_INCREMENT_OFFSET=1; -SET @@INSERT_ID=1; -SHOW VARIABLES LIKE "auto_inc%"; -Variable_name Value -auto_increment_increment 1 -auto_increment_offset 1 -DROP TABLE IF EXISTS t1; -Warnings: -Note 1051 Unknown table 't1' -CREATE TABLE t1 (c1 INT AUTO_INCREMENT, PRIMARY KEY(c1)) ENGINE=InnoDB; -INSERT INTO t1 VALUES(0); -SELECT * FROM t1; -c1 -1 -SET @@SESSION.AUTO_INCREMENT_INCREMENT=100, @@SESSION.AUTO_INCREMENT_OFFSET=10; -INSERT INTO t1 VALUES (-1), (NULL),(2),(NULL); -INSERT INTO t1 VALUES (250),(NULL); -SELECT * FROM t1; -c1 --1 -1 -2 -10 -110 -250 -410 -SET @@INSERT_ID=400; -INSERT INTO t1 VALUES(NULL),(NULL); -Got one of the listed errors -SELECT * FROM t1; -c1 --1 -1 -2 -10 -110 -250 -410 -DROP TABLE t1; -SET @@SESSION.AUTO_INCREMENT_INCREMENT=1, @@SESSION.AUTO_INCREMENT_OFFSET=1; -SET @@INSERT_ID=1; -SHOW VARIABLES LIKE "auto_inc%"; -Variable_name Value -auto_increment_increment 1 -auto_increment_offset 1 -DROP TABLE IF EXISTS t1; -Warnings: -Note 1051 Unknown table 't1' -CREATE TABLE t1 (c1 INT AUTO_INCREMENT, PRIMARY KEY(c1)) ENGINE=InnoDB; -INSERT INTO t1 VALUES(-1); -SELECT * FROM t1; -c1 --1 -SET @@SESSION.AUTO_INCREMENT_INCREMENT=100, @@SESSION.AUTO_INCREMENT_OFFSET=10; -SHOW VARIABLES LIKE "auto_inc%"; -Variable_name Value -auto_increment_increment 100 -auto_increment_offset 10 -INSERT INTO t1 VALUES (-2), (NULL),(2),(NULL); -INSERT INTO t1 VALUES (250),(NULL); -SELECT * FROM t1; -c1 --2 --1 -1 -2 -10 -250 -310 -INSERT INTO t1 VALUES (1000); -SET @@INSERT_ID=400; -INSERT INTO t1 VALUES(NULL),(NULL); -SELECT * FROM t1; -c1 --2 --1 -1 -2 -10 -250 -310 -400 -410 -1000 -DROP TABLE t1; -SET @@SESSION.AUTO_INCREMENT_INCREMENT=1, @@SESSION.AUTO_INCREMENT_OFFSET=1; -SET @@INSERT_ID=1; -SHOW VARIABLES LIKE "auto_inc%"; -Variable_name Value -auto_increment_increment 1 -auto_increment_offset 1 -DROP TABLE IF EXISTS t1; -Warnings: -Note 1051 Unknown table 't1' -CREATE TABLE t1 (c1 INT UNSIGNED AUTO_INCREMENT, PRIMARY KEY(c1)) ENGINE=InnoDB; -INSERT INTO t1 VALUES(-1); -Warnings: -Warning 1264 Out of range value for column 'c1' at row 1 -SELECT * FROM t1; -c1 -1 -SET @@SESSION.AUTO_INCREMENT_INCREMENT=100, @@SESSION.AUTO_INCREMENT_OFFSET=10; -SHOW VARIABLES LIKE "auto_inc%"; -Variable_name Value -auto_increment_increment 100 -auto_increment_offset 10 -INSERT INTO t1 VALUES (-2); -Warnings: -Warning 1264 Out of range value for column 'c1' at row 1 -INSERT INTO t1 VALUES (NULL); -INSERT INTO t1 VALUES (2); -INSERT INTO t1 VALUES (NULL); -INSERT INTO t1 VALUES (250); -INSERT INTO t1 VALUES (NULL); -SELECT * FROM t1; -c1 -1 -2 -10 -110 -210 -250 -310 -INSERT INTO t1 VALUES (1000); -SET @@INSERT_ID=400; -INSERT INTO t1 VALUES(NULL); -INSERT INTO t1 VALUES(NULL); -SELECT * FROM t1; -c1 -1 -2 -10 -110 -210 -250 -310 -400 -1000 -1010 -DROP TABLE t1; -SET @@SESSION.AUTO_INCREMENT_INCREMENT=1, @@SESSION.AUTO_INCREMENT_OFFSET=1; -SET @@INSERT_ID=1; -SHOW VARIABLES LIKE "auto_inc%"; -Variable_name Value -auto_increment_increment 1 -auto_increment_offset 1 -DROP TABLE IF EXISTS t1; -Warnings: -Note 1051 Unknown table 't1' -CREATE TABLE t1 (c1 INT UNSIGNED AUTO_INCREMENT, PRIMARY KEY(c1)) ENGINE=InnoDB; -INSERT INTO t1 VALUES(-1); -Warnings: -Warning 1264 Out of range value for column 'c1' at row 1 -SELECT * FROM t1; -c1 -1 -SET @@SESSION.AUTO_INCREMENT_INCREMENT=100, @@SESSION.AUTO_INCREMENT_OFFSET=10; -SHOW VARIABLES LIKE "auto_inc%"; -Variable_name Value -auto_increment_increment 100 -auto_increment_offset 10 -INSERT INTO t1 VALUES (-2),(NULL),(2),(NULL); -Warnings: -Warning 1264 Out of range value for column 'c1' at row 1 -INSERT INTO t1 VALUES (250),(NULL); -SELECT * FROM t1; -c1 -1 -2 -10 -110 -210 -250 -410 -INSERT INTO t1 VALUES (1000); -SET @@INSERT_ID=400; -INSERT INTO t1 VALUES(NULL),(NULL); -Got one of the listed errors -SELECT * FROM t1; -c1 -1 -2 -10 -110 -210 -250 -410 -1000 -DROP TABLE t1; -SET @@SESSION.AUTO_INCREMENT_INCREMENT=1, @@SESSION.AUTO_INCREMENT_OFFSET=1; -SET @@INSERT_ID=1; -SHOW VARIABLES LIKE "auto_inc%"; -Variable_name Value -auto_increment_increment 1 -auto_increment_offset 1 -DROP TABLE IF EXISTS t1; -Warnings: -Note 1051 Unknown table 't1' -CREATE TABLE t1 (c1 BIGINT AUTO_INCREMENT, PRIMARY KEY(c1)) ENGINE=InnoDB; -INSERT INTO t1 VALUES(NULL); -INSERT INTO t1 VALUES (9223372036854775794); -SELECT * FROM t1; -c1 -1 -9223372036854775794 -SET @@SESSION.AUTO_INCREMENT_INCREMENT=2, @@SESSION.AUTO_INCREMENT_OFFSET=10; -SHOW VARIABLES LIKE "auto_inc%"; -Variable_name Value -auto_increment_increment 2 -auto_increment_offset 10 -INSERT INTO t1 VALUES (NULL),(NULL),(NULL),(NULL),(NULL),(NULL); -SELECT * FROM t1; -c1 -1 -9223372036854775794 -9223372036854775796 -9223372036854775798 -9223372036854775800 -9223372036854775802 -9223372036854775804 -9223372036854775806 -DROP TABLE t1; -SET @@SESSION.AUTO_INCREMENT_INCREMENT=1, @@SESSION.AUTO_INCREMENT_OFFSET=1; -SET @@INSERT_ID=1; -SHOW VARIABLES LIKE "auto_inc%"; -Variable_name Value -auto_increment_increment 1 -auto_increment_offset 1 -DROP TABLE IF EXISTS t1; -Warnings: -Note 1051 Unknown table 't1' -CREATE TABLE t1 (c1 BIGINT UNSIGNED AUTO_INCREMENT, PRIMARY KEY(c1)) ENGINE=InnoDB; -INSERT INTO t1 VALUES(NULL); -INSERT INTO t1 VALUES (18446744073709551603); -SELECT * FROM t1; -c1 -1 -18446744073709551603 -SET @@SESSION.AUTO_INCREMENT_INCREMENT=2, @@SESSION.AUTO_INCREMENT_OFFSET=10; -SHOW VARIABLES LIKE "auto_inc%"; -Variable_name Value -auto_increment_increment 2 -auto_increment_offset 10 -INSERT INTO t1 VALUES (NULL),(NULL),(NULL),(NULL),(NULL),(NULL); -SELECT * FROM t1; -c1 -1 -18446744073709551603 -18446744073709551604 -18446744073709551606 -18446744073709551608 -18446744073709551610 -18446744073709551612 -18446744073709551614 -DROP TABLE t1; -SET @@SESSION.AUTO_INCREMENT_INCREMENT=1, @@SESSION.AUTO_INCREMENT_OFFSET=1; -SET @@INSERT_ID=1; -SHOW VARIABLES LIKE "auto_inc%"; -Variable_name Value -auto_increment_increment 1 -auto_increment_offset 1 -DROP TABLE IF EXISTS t1; -Warnings: -Note 1051 Unknown table 't1' -CREATE TABLE t1 (c1 BIGINT UNSIGNED AUTO_INCREMENT, PRIMARY KEY(c1)) ENGINE=InnoDB; -INSERT INTO t1 VALUES(NULL); -INSERT INTO t1 VALUES (18446744073709551603); -SELECT * FROM t1; -c1 -1 -18446744073709551603 -SET @@SESSION.AUTO_INCREMENT_INCREMENT=5, @@SESSION.AUTO_INCREMENT_OFFSET=7; -SHOW VARIABLES LIKE "auto_inc%"; -Variable_name Value -auto_increment_increment 5 -auto_increment_offset 7 -INSERT INTO t1 VALUES (NULL),(NULL); -SELECT * FROM t1; -c1 -1 -18446744073709551603 -18446744073709551607 -18446744073709551612 -DROP TABLE t1; -SET @@SESSION.AUTO_INCREMENT_INCREMENT=1, @@SESSION.AUTO_INCREMENT_OFFSET=1; -SET @@INSERT_ID=1; -SHOW VARIABLES LIKE "auto_inc%"; -Variable_name Value -auto_increment_increment 1 -auto_increment_offset 1 -DROP TABLE IF EXISTS t1; -Warnings: -Note 1051 Unknown table 't1' -CREATE TABLE t1 (c1 BIGINT AUTO_INCREMENT, PRIMARY KEY(c1)) ENGINE=InnoDB; -INSERT INTO t1 VALUES(NULL); -INSERT INTO t1 VALUES(-9223372036854775806); -INSERT INTO t1 VALUES(-9223372036854775807); -INSERT INTO t1 VALUES(-9223372036854775808); -SELECT * FROM t1; -c1 --9223372036854775808 --9223372036854775807 --9223372036854775806 -1 -SET @@SESSION.AUTO_INCREMENT_INCREMENT=3, @@SESSION.AUTO_INCREMENT_OFFSET=3; -SHOW VARIABLES LIKE "auto_inc%"; -Variable_name Value -auto_increment_increment 3 -auto_increment_offset 3 -INSERT INTO t1 VALUES (NULL),(NULL), (NULL); -SELECT * FROM t1; -c1 --9223372036854775808 --9223372036854775807 --9223372036854775806 -1 -3 -6 -9 -DROP TABLE t1; -SET @@SESSION.AUTO_INCREMENT_INCREMENT=1, @@SESSION.AUTO_INCREMENT_OFFSET=1; -SET @@INSERT_ID=1; -SHOW VARIABLES LIKE "auto_inc%"; -Variable_name Value -auto_increment_increment 1 -auto_increment_offset 1 -DROP TABLE IF EXISTS t1; -Warnings: -Note 1051 Unknown table 't1' -CREATE TABLE t1 (c1 BIGINT UNSIGNED AUTO_INCREMENT, PRIMARY KEY(c1)) ENGINE=InnoDB; -INSERT INTO t1 VALUES(NULL); -INSERT INTO t1 VALUES (18446744073709551610); -SELECT * FROM t1; -c1 -1 -18446744073709551610 -SET @@SESSION.AUTO_INCREMENT_INCREMENT=1152921504606846976, @@SESSION.AUTO_INCREMENT_OFFSET=1152921504606846976; -Warnings: -Warning 1292 Truncated incorrect auto_increment_increment value: '1152921504606846976' -Warning 1292 Truncated incorrect auto_increment_offset value: '1152921504606846976' -SHOW VARIABLES LIKE "auto_inc%"; -Variable_name Value -auto_increment_increment 65535 -auto_increment_offset 65535 -INSERT INTO t1 VALUES (NULL); -SELECT * FROM t1; -c1 -1 -18446744073709551610 -18446744073709551615 -DROP TABLE t1; -SET @@SESSION.AUTO_INCREMENT_INCREMENT=1, @@SESSION.AUTO_INCREMENT_OFFSET=1; -SET @@INSERT_ID=1; -SHOW VARIABLES LIKE "%auto_inc%"; -Variable_name Value -auto_increment_increment 1 -auto_increment_offset 1 -pbxt_auto_increment_mode 0 -CREATE TABLE t1 (c1 DOUBLE NOT NULL AUTO_INCREMENT, c2 INT, PRIMARY KEY (c1)) ENGINE=InnoDB; -INSERT INTO t1 VALUES(NULL, 1); -INSERT INTO t1 VALUES(NULL, 2); -SELECT * FROM t1; -c1 c2 -1 1 -2 2 -ALTER TABLE t1 CHANGE c1 c1 SERIAL; -SELECT * FROM t1; -c1 c2 -1 1 -2 2 -INSERT INTO t1 VALUES(NULL, 3); -INSERT INTO t1 VALUES(NULL, 4); -SELECT * FROM t1; -c1 c2 -1 1 -2 2 -3 3 -4 4 -DROP TABLE IF EXISTS t1; -CREATE TABLE t1 (c1 FLOAT NOT NULL AUTO_INCREMENT, c2 INT, PRIMARY KEY (c1)) ENGINE=InnoDB; -INSERT INTO t1 VALUES(NULL, 1); -INSERT INTO t1 VALUES(NULL, 2); -SELECT * FROM t1; -c1 c2 -1 1 -2 2 -ALTER TABLE t1 CHANGE c1 c1 SERIAL; -SELECT * FROM t1; -c1 c2 -1 1 -2 2 -INSERT INTO t1 VALUES(NULL, 3); -INSERT INTO t1 VALUES(NULL, 4); -SELECT * FROM t1; -c1 c2 -1 1 -2 2 -3 3 -4 4 -DROP TABLE t1; -SET @@SESSION.AUTO_INCREMENT_INCREMENT=1, @@SESSION.AUTO_INCREMENT_OFFSET=5; -DROP TABLE IF EXISTS t1; -Warnings: -Note 1051 Unknown table 't1' -DROP TABLE IF EXISTS t2; -Warnings: -Note 1051 Unknown table 't2' -CREATE TABLE t1 ( -a INT(11) UNSIGNED NOT NULL AUTO_INCREMENT, -b INT(10) UNSIGNED NOT NULL, -c ENUM('FALSE','TRUE') DEFAULT NULL, -PRIMARY KEY (a)) ENGINE = InnoDB; -CREATE TABLE t2 ( -m INT(11) UNSIGNED NOT NULL AUTO_INCREMENT, -n INT(10) UNSIGNED NOT NULL, -o enum('FALSE','TRUE') DEFAULT NULL, -PRIMARY KEY (m)) ENGINE = InnoDB; -INSERT INTO t2 (n,o) VALUES -(1 , 'true'), (1 , 'false'), (2 , 'true'), (2 , 'false'), (3 , 'true'), -(3 , 'false'), (4 , 'true'), (4 , 'false'), (5 , 'true'), (5 , 'false'); -SHOW CREATE TABLE t2; -Table Create Table -t2 CREATE TABLE `t2` ( - `m` int(11) unsigned NOT NULL AUTO_INCREMENT, - `n` int(10) unsigned NOT NULL, - `o` enum('FALSE','TRUE') DEFAULT NULL, - PRIMARY KEY (`m`) -) ENGINE=InnoDB AUTO_INCREMENT=15 DEFAULT CHARSET=latin1 -INSERT INTO t1 (b,c) SELECT n,o FROM t2 ; -SHOW CREATE TABLE t1; -Table Create Table -t1 CREATE TABLE `t1` ( - `a` int(11) unsigned NOT NULL AUTO_INCREMENT, - `b` int(10) unsigned NOT NULL, - `c` enum('FALSE','TRUE') DEFAULT NULL, - PRIMARY KEY (`a`) -) ENGINE=InnoDB AUTO_INCREMENT=13 DEFAULT CHARSET=latin1 -INSERT INTO t1 (b,c) SELECT n,o FROM t2 ; -SELECT * FROM t1; -a b c -1 1 TRUE -2 1 FALSE -3 2 TRUE -4 2 FALSE -5 3 TRUE -6 3 FALSE -7 4 TRUE -8 4 FALSE -9 5 TRUE -10 5 FALSE -13 1 TRUE -14 1 FALSE -15 2 TRUE -16 2 FALSE -17 3 TRUE -18 3 FALSE -19 4 TRUE -20 4 FALSE -21 5 TRUE -22 5 FALSE -SHOW CREATE TABLE t1; -Table Create Table -t1 CREATE TABLE `t1` ( - `a` int(11) unsigned NOT NULL AUTO_INCREMENT, - `b` int(10) unsigned NOT NULL, - `c` enum('FALSE','TRUE') DEFAULT NULL, - PRIMARY KEY (`a`) -) ENGINE=InnoDB AUTO_INCREMENT=23 DEFAULT CHARSET=latin1 -INSERT INTO t1 (b,c) SELECT n,o FROM t2 WHERE o = 'false'; -SELECT * FROM t1; -a b c -1 1 TRUE -2 1 FALSE -3 2 TRUE -4 2 FALSE -5 3 TRUE -6 3 FALSE -7 4 TRUE -8 4 FALSE -9 5 TRUE -10 5 FALSE -13 1 TRUE -14 1 FALSE -15 2 TRUE -16 2 FALSE -17 3 TRUE -18 3 FALSE -19 4 TRUE -20 4 FALSE -21 5 TRUE -22 5 FALSE -23 1 FALSE -24 2 FALSE -25 3 FALSE -26 4 FALSE -27 5 FALSE -SHOW CREATE TABLE t1; -Table Create Table -t1 CREATE TABLE `t1` ( - `a` int(11) unsigned NOT NULL AUTO_INCREMENT, - `b` int(10) unsigned NOT NULL, - `c` enum('FALSE','TRUE') DEFAULT NULL, - PRIMARY KEY (`a`) -) ENGINE=InnoDB AUTO_INCREMENT=30 DEFAULT CHARSET=latin1 -INSERT INTO t1 (b,c) SELECT n,o FROM t2 WHERE o = 'false'; -SELECT * FROM t1; -a b c -1 1 TRUE -2 1 FALSE -3 2 TRUE -4 2 FALSE -5 3 TRUE -6 3 FALSE -7 4 TRUE -8 4 FALSE -9 5 TRUE -10 5 FALSE -13 1 TRUE -14 1 FALSE -15 2 TRUE -16 2 FALSE -17 3 TRUE -18 3 FALSE -19 4 TRUE -20 4 FALSE -21 5 TRUE -22 5 FALSE -23 1 FALSE -24 2 FALSE -25 3 FALSE -26 4 FALSE -27 5 FALSE -30 1 FALSE -31 2 FALSE -32 3 FALSE -33 4 FALSE -34 5 FALSE -SHOW CREATE TABLE t1; -Table Create Table -t1 CREATE TABLE `t1` ( - `a` int(11) unsigned NOT NULL AUTO_INCREMENT, - `b` int(10) unsigned NOT NULL, - `c` enum('FALSE','TRUE') DEFAULT NULL, - PRIMARY KEY (`a`) -) ENGINE=InnoDB AUTO_INCREMENT=37 DEFAULT CHARSET=latin1 -INSERT INTO t1 (b,c) SELECT n,o FROM t2 WHERE o = 'false'; -SHOW CREATE TABLE t1; -Table Create Table -t1 CREATE TABLE `t1` ( - `a` int(11) unsigned NOT NULL AUTO_INCREMENT, - `b` int(10) unsigned NOT NULL, - `c` enum('FALSE','TRUE') DEFAULT NULL, - PRIMARY KEY (`a`) -) ENGINE=InnoDB AUTO_INCREMENT=44 DEFAULT CHARSET=latin1 -INSERT INTO t1 (b,c) SELECT n,o FROM t2 WHERE o = 'false'; -SHOW CREATE TABLE t1; -Table Create Table -t1 CREATE TABLE `t1` ( - `a` int(11) unsigned NOT NULL AUTO_INCREMENT, - `b` int(10) unsigned NOT NULL, - `c` enum('FALSE','TRUE') DEFAULT NULL, - PRIMARY KEY (`a`) -) ENGINE=InnoDB AUTO_INCREMENT=51 DEFAULT CHARSET=latin1 -INSERT INTO t1 (b,c) SELECT n,o FROM t2 WHERE o = 'false'; -SELECT * FROM t1; -a b c -1 1 TRUE -2 1 FALSE -3 2 TRUE -4 2 FALSE -5 3 TRUE -6 3 FALSE -7 4 TRUE -8 4 FALSE -9 5 TRUE -10 5 FALSE -13 1 TRUE -14 1 FALSE -15 2 TRUE -16 2 FALSE -17 3 TRUE -18 3 FALSE -19 4 TRUE -20 4 FALSE -21 5 TRUE -22 5 FALSE -23 1 FALSE -24 2 FALSE -25 3 FALSE -26 4 FALSE -27 5 FALSE -30 1 FALSE -31 2 FALSE -32 3 FALSE -33 4 FALSE -34 5 FALSE -37 1 FALSE -38 2 FALSE -39 3 FALSE -40 4 FALSE -41 5 FALSE -44 1 FALSE -45 2 FALSE -46 3 FALSE -47 4 FALSE -48 5 FALSE -51 1 FALSE -52 2 FALSE -53 3 FALSE -54 4 FALSE -55 5 FALSE -SHOW CREATE TABLE t1; -Table Create Table -t1 CREATE TABLE `t1` ( - `a` int(11) unsigned NOT NULL AUTO_INCREMENT, - `b` int(10) unsigned NOT NULL, - `c` enum('FALSE','TRUE') DEFAULT NULL, - PRIMARY KEY (`a`) -) ENGINE=InnoDB AUTO_INCREMENT=58 DEFAULT CHARSET=latin1 -DROP TABLE t1; -DROP TABLE t2; -DROP TABLE IF EXISTS t1; -Warnings: -Note 1051 Unknown table 't1' -DROP TABLE IF EXISTS t2; -Warnings: -Note 1051 Unknown table 't2' -CREATE TABLE t1( -c1 INT(10) UNSIGNED NOT NULL AUTO_INCREMENT -PRIMARY KEY) ENGINE=InnoDB; -INSERT INTO t1 VALUES (NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL); -CREATE TABLE t2( -c1 TINYINT(3) UNSIGNED NOT NULL AUTO_INCREMENT -PRIMARY KEY) ENGINE=InnoDB; -INSERT INTO t2 SELECT c1 FROM t1; -Got one of the listed errors -INSERT INTO t2 SELECT NULL FROM t1; -Got one of the listed errors -DROP TABLE t1; -DROP TABLE t2; === added file 'mysql-test/r/innodb-index.result' --- a/mysql-test/r/innodb-index.result 1970-01-01 00:00:00 +0000 +++ b/mysql-test/r/innodb-index.result 2009-06-11 12:53:26 +0000 @@ -0,0 +1,1137 @@ +SET @save_innodb_file_format_check=@@global.innodb_file_format_check; +create table t1(a int not null, b int, c char(10) not null, d varchar(20)) engine = innodb; +insert into t1 values (5,5,'oo','oo'),(4,4,'tr','tr'),(3,4,'ad','ad'),(2,3,'ak','ak'); +commit; +alter table t1 add index b (b), add index b (b); +ERROR 42000: Duplicate key name 'b' +alter table t1 add index (b,b); +ERROR 42S21: Duplicate column name 'b' +alter table t1 add index d2 (d); +show create table t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` int(11) NOT NULL, + `b` int(11) DEFAULT NULL, + `c` char(10) NOT NULL, + `d` varchar(20) DEFAULT NULL, + KEY `d2` (`d`) +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +explain select * from t1 force index(d2) order by d; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index NULL d2 23 NULL 4 +select * from t1 force index (d2) order by d; +a b c d +3 4 ad ad +2 3 ak ak +5 5 oo oo +4 4 tr tr +alter table t1 add unique index (b); +ERROR 23000: Duplicate entry '4' for key 'b' +show create table t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` int(11) NOT NULL, + `b` int(11) DEFAULT NULL, + `c` char(10) NOT NULL, + `d` varchar(20) DEFAULT NULL, + KEY `d2` (`d`) +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +alter table t1 add index (b); +show create table t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` int(11) NOT NULL, + `b` int(11) DEFAULT NULL, + `c` char(10) NOT NULL, + `d` varchar(20) DEFAULT NULL, + KEY `d2` (`d`), + KEY `b` (`b`) +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +CREATE TABLE `t1#1`(a INT PRIMARY KEY) ENGINE=InnoDB; +call mtr.add_suppression(" table `test`\\.`t1#[12]` already exists in InnoDB internal"); +alter table t1 add unique index (c), add index (d); +ERROR HY000: Table 'test.t1#1' already exists +rename table `t1#1` to `t1#2`; +alter table t1 add unique index (c), add index (d); +ERROR HY000: Table 'test.t1#2' already exists +drop table `t1#2`; +alter table t1 add unique index (c), add index (d); +show create table t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` int(11) NOT NULL, + `b` int(11) DEFAULT NULL, + `c` char(10) NOT NULL, + `d` varchar(20) DEFAULT NULL, + UNIQUE KEY `c` (`c`), + KEY `d2` (`d`), + KEY `b` (`b`), + KEY `d` (`d`) +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +explain select * from t1 force index(c) order by c; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index NULL c 10 NULL 4 +alter table t1 add primary key (a), drop index c; +show create table t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` int(11) NOT NULL, + `b` int(11) DEFAULT NULL, + `c` char(10) NOT NULL, + `d` varchar(20) DEFAULT NULL, + PRIMARY KEY (`a`), + KEY `d2` (`d`), + KEY `b` (`b`), + KEY `d` (`d`) +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +alter table t1 add primary key (c); +ERROR 42000: Multiple primary key defined +alter table t1 drop primary key, add primary key (b); +ERROR 23000: Duplicate entry '4' for key 'PRIMARY' +create unique index c on t1 (c); +show create table t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` int(11) NOT NULL, + `b` int(11) DEFAULT NULL, + `c` char(10) NOT NULL, + `d` varchar(20) DEFAULT NULL, + PRIMARY KEY (`a`), + UNIQUE KEY `c` (`c`), + KEY `d2` (`d`), + KEY `b` (`b`), + KEY `d` (`d`) +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +explain select * from t1 force index(c) order by c; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index NULL c 10 NULL 4 +select * from t1 force index(c) order by c; +a b c d +3 4 ad ad +2 3 ak ak +5 5 oo oo +4 4 tr tr +alter table t1 drop index b, add index (b); +show create table t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` int(11) NOT NULL, + `b` int(11) DEFAULT NULL, + `c` char(10) NOT NULL, + `d` varchar(20) DEFAULT NULL, + PRIMARY KEY (`a`), + UNIQUE KEY `c` (`c`), + KEY `d2` (`d`), + KEY `d` (`d`), + KEY `b` (`b`) +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +insert into t1 values(6,1,'ggg','ggg'); +select * from t1; +a b c d +2 3 ak ak +3 4 ad ad +4 4 tr tr +5 5 oo oo +6 1 ggg ggg +select * from t1 force index(b) order by b; +a b c d +6 1 ggg ggg +2 3 ak ak +3 4 ad ad +4 4 tr tr +5 5 oo oo +select * from t1 force index(c) order by c; +a b c d +3 4 ad ad +2 3 ak ak +6 1 ggg ggg +5 5 oo oo +4 4 tr tr +select * from t1 force index(d) order by d; +a b c d +3 4 ad ad +2 3 ak ak +6 1 ggg ggg +5 5 oo oo +4 4 tr tr +explain select * from t1 force index(b) order by b; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index NULL b 5 NULL 5 +explain select * from t1 force index(c) order by c; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index NULL c 10 NULL 5 +explain select * from t1 force index(d) order by d; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index NULL d 23 NULL 5 +show create table t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` int(11) NOT NULL, + `b` int(11) DEFAULT NULL, + `c` char(10) NOT NULL, + `d` varchar(20) DEFAULT NULL, + PRIMARY KEY (`a`), + UNIQUE KEY `c` (`c`), + KEY `d2` (`d`), + KEY `d` (`d`), + KEY `b` (`b`) +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +drop table t1; +create table t1(a int not null, b int, c char(10), d varchar(20), primary key (a)) engine = innodb; +insert into t1 values (1,1,'ab','ab'),(2,2,'ac','ac'),(3,3,'ad','ad'),(4,4,'afe','afe'); +commit; +alter table t1 add index (c(2)); +show create table t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` int(11) NOT NULL, + `b` int(11) DEFAULT NULL, + `c` char(10) DEFAULT NULL, + `d` varchar(20) DEFAULT NULL, + PRIMARY KEY (`a`), + KEY `c` (`c`(2)) +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +alter table t1 add unique index (d(10)); +show create table t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` int(11) NOT NULL, + `b` int(11) DEFAULT NULL, + `c` char(10) DEFAULT NULL, + `d` varchar(20) DEFAULT NULL, + PRIMARY KEY (`a`), + UNIQUE KEY `d` (`d`(10)), + KEY `c` (`c`(2)) +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +insert into t1 values(5,1,'ggg','ggg'); +select * from t1; +a b c d +1 1 ab ab +2 2 ac ac +3 3 ad ad +4 4 afe afe +5 1 ggg ggg +select * from t1 force index(c) order by c; +a b c d +1 1 ab ab +2 2 ac ac +3 3 ad ad +4 4 afe afe +5 1 ggg ggg +select * from t1 force index(d) order by d; +a b c d +1 1 ab ab +2 2 ac ac +3 3 ad ad +4 4 afe afe +5 1 ggg ggg +explain select * from t1 order by b; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 5 Using filesort +explain select * from t1 force index(c) order by c; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 5 Using filesort +explain select * from t1 force index(d) order by d; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 5 Using filesort +show create table t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` int(11) NOT NULL, + `b` int(11) DEFAULT NULL, + `c` char(10) DEFAULT NULL, + `d` varchar(20) DEFAULT NULL, + PRIMARY KEY (`a`), + UNIQUE KEY `d` (`d`(10)), + KEY `c` (`c`(2)) +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +alter table t1 drop index d; +insert into t1 values(8,9,'fff','fff'); +select * from t1; +a b c d +1 1 ab ab +2 2 ac ac +3 3 ad ad +4 4 afe afe +5 1 ggg ggg +8 9 fff fff +select * from t1 force index(c) order by c; +a b c d +1 1 ab ab +2 2 ac ac +3 3 ad ad +4 4 afe afe +8 9 fff fff +5 1 ggg ggg +explain select * from t1 order by b; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 6 Using filesort +explain select * from t1 force index(c) order by c; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 6 Using filesort +explain select * from t1 order by d; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 6 Using filesort +show create table t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` int(11) NOT NULL, + `b` int(11) DEFAULT NULL, + `c` char(10) DEFAULT NULL, + `d` varchar(20) DEFAULT NULL, + PRIMARY KEY (`a`), + KEY `c` (`c`(2)) +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +drop table t1; +create table t1(a int not null, b int, c char(10), d varchar(20), primary key (a)) engine = innodb; +insert into t1 values (1,1,'ab','ab'),(2,2,'ac','ac'),(3,2,'ad','ad'),(4,4,'afe','afe'); +commit; +alter table t1 add unique index (b,c); +insert into t1 values(8,9,'fff','fff'); +select * from t1; +a b c d +1 1 ab ab +2 2 ac ac +3 2 ad ad +4 4 afe afe +8 9 fff fff +select * from t1 force index(b) order by b; +a b c d +1 1 ab ab +2 2 ac ac +3 2 ad ad +4 4 afe afe +8 9 fff fff +explain select * from t1 force index(b) order by b; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index NULL b 16 NULL 5 +show create table t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` int(11) NOT NULL, + `b` int(11) DEFAULT NULL, + `c` char(10) DEFAULT NULL, + `d` varchar(20) DEFAULT NULL, + PRIMARY KEY (`a`), + UNIQUE KEY `b` (`b`,`c`) +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +alter table t1 add index (b,c); +insert into t1 values(11,11,'kkk','kkk'); +select * from t1; +a b c d +1 1 ab ab +2 2 ac ac +3 2 ad ad +4 4 afe afe +8 9 fff fff +11 11 kkk kkk +select * from t1 force index(b) order by b; +a b c d +1 1 ab ab +2 2 ac ac +3 2 ad ad +4 4 afe afe +8 9 fff fff +11 11 kkk kkk +explain select * from t1 force index(b) order by b; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index NULL b 16 NULL 6 +show create table t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` int(11) NOT NULL, + `b` int(11) DEFAULT NULL, + `c` char(10) DEFAULT NULL, + `d` varchar(20) DEFAULT NULL, + PRIMARY KEY (`a`), + UNIQUE KEY `b` (`b`,`c`), + KEY `b_2` (`b`,`c`) +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +alter table t1 add unique index (c,d); +insert into t1 values(13,13,'yyy','aaa'); +select * from t1; +a b c d +1 1 ab ab +2 2 ac ac +3 2 ad ad +4 4 afe afe +8 9 fff fff +11 11 kkk kkk +13 13 yyy aaa +select * from t1 force index(b) order by b; +a b c d +1 1 ab ab +2 2 ac ac +3 2 ad ad +4 4 afe afe +8 9 fff fff +11 11 kkk kkk +13 13 yyy aaa +select * from t1 force index(c) order by c; +a b c d +1 1 ab ab +2 2 ac ac +3 2 ad ad +4 4 afe afe +8 9 fff fff +11 11 kkk kkk +13 13 yyy aaa +explain select * from t1 force index(b) order by b; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index NULL b 16 NULL 7 +explain select * from t1 force index(c) order by c; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index NULL c 34 NULL 7 +show create table t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` int(11) NOT NULL, + `b` int(11) DEFAULT NULL, + `c` char(10) DEFAULT NULL, + `d` varchar(20) DEFAULT NULL, + PRIMARY KEY (`a`), + UNIQUE KEY `b` (`b`,`c`), + UNIQUE KEY `c` (`c`,`d`), + KEY `b_2` (`b`,`c`) +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +drop table t1; +create table t1(a int not null, b int not null, c int, primary key (a), key (b)) engine = innodb; +create table t3(a int not null, c int not null, d int, primary key (a), key (c)) engine = innodb; +create table t4(a int not null, d int not null, e int, primary key (a), key (d)) engine = innodb; +create table t2(a int not null, b int not null, c int not null, d int not null, e int, +foreign key (b) references t1(b) on delete cascade, +foreign key (c) references t3(c), foreign key (d) references t4(d)) +engine = innodb; +alter table t1 drop index b; +ERROR HY000: Cannot drop index 'b': needed in a foreign key constraint +alter table t3 drop index c; +ERROR HY000: Cannot drop index 'c': needed in a foreign key constraint +alter table t4 drop index d; +ERROR HY000: Cannot drop index 'd': needed in a foreign key constraint +alter table t2 drop index b; +ERROR HY000: Cannot drop index 'b': needed in a foreign key constraint +alter table t2 drop index b, drop index c, drop index d; +ERROR HY000: Cannot drop index 'b': needed in a foreign key constraint +create unique index dc on t2 (d,c); +create index dc on t1 (b,c); +alter table t2 add primary key (a); +insert into t1 values (1,1,1); +insert into t3 values (1,1,1); +insert into t4 values (1,1,1); +insert into t2 values (1,1,1,1,1); +commit; +alter table t4 add constraint dc foreign key (a) references t1(a); +show create table t4; +Table Create Table +t4 CREATE TABLE `t4` ( + `a` int(11) NOT NULL, + `d` int(11) NOT NULL, + `e` int(11) DEFAULT NULL, + PRIMARY KEY (`a`), + KEY `d` (`d`), + CONSTRAINT `dc` FOREIGN KEY (`a`) REFERENCES `t1` (`a`) +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +alter table t3 add constraint dc foreign key (a) references t1(a); +ERROR HY000: Can't create table '#sql-temporary' (errno: 121) +show create table t3; +Table Create Table +t3 CREATE TABLE `t3` ( + `a` int(11) NOT NULL, + `c` int(11) NOT NULL, + `d` int(11) DEFAULT NULL, + PRIMARY KEY (`a`), + KEY `c` (`c`) +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +alter table t2 drop index b, add index (b); +show create table t2; +Table Create Table +t2 CREATE TABLE `t2` ( + `a` int(11) NOT NULL, + `b` int(11) NOT NULL, + `c` int(11) NOT NULL, + `d` int(11) NOT NULL, + `e` int(11) DEFAULT NULL, + PRIMARY KEY (`a`), + UNIQUE KEY `dc` (`d`,`c`), + KEY `c` (`c`), + KEY `b` (`b`), + CONSTRAINT `t2_ibfk_1` FOREIGN KEY (`b`) REFERENCES `t1` (`b`) ON DELETE CASCADE, + CONSTRAINT `t2_ibfk_2` FOREIGN KEY (`c`) REFERENCES `t3` (`c`), + CONSTRAINT `t2_ibfk_3` FOREIGN KEY (`d`) REFERENCES `t4` (`d`) +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +delete from t1; +ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails (`test`.`t4`, CONSTRAINT `dc` FOREIGN KEY (`a`) REFERENCES `t1` (`a`)) +drop index dc on t4; +ERROR 42000: Can't DROP 'dc'; check that column/key exists +alter table t3 drop foreign key dc; +ERROR HY000: Error on rename of './test/t3' to '#sql2-temporary' (errno: 152) +alter table t4 drop foreign key dc; +select * from t2; +a b c d e +1 1 1 1 1 +delete from t1; +select * from t2; +a b c d e +drop table t2,t4,t3,t1; +create table t1(a int not null, b int, c char(10), d varchar(20), primary key (a)) engine = innodb default charset=utf8; +insert into t1 values (1,1,'ab','ab'),(2,2,'ac','ac'),(3,2,'ad','ad'),(4,4,'afe','afe'); +commit; +alter table t1 add unique index (b); +ERROR 23000: Duplicate entry '2' for key 'b' +insert into t1 values(8,9,'fff','fff'); +select * from t1; +a b c d +1 1 ab ab +2 2 ac ac +3 2 ad ad +4 4 afe afe +8 9 fff fff +show create table t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` int(11) NOT NULL, + `b` int(11) DEFAULT NULL, + `c` char(10) DEFAULT NULL, + `d` varchar(20) DEFAULT NULL, + PRIMARY KEY (`a`) +) ENGINE=InnoDB DEFAULT CHARSET=utf8 +alter table t1 add index (b); +insert into t1 values(10,10,'kkk','iii'); +select * from t1; +a b c d +1 1 ab ab +2 2 ac ac +3 2 ad ad +4 4 afe afe +8 9 fff fff +10 10 kkk iii +select * from t1 force index(b) order by b; +a b c d +1 1 ab ab +2 2 ac ac +3 2 ad ad +4 4 afe afe +8 9 fff fff +10 10 kkk iii +explain select * from t1 force index(b) order by b; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index NULL b 5 NULL 6 +show create table t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` int(11) NOT NULL, + `b` int(11) DEFAULT NULL, + `c` char(10) DEFAULT NULL, + `d` varchar(20) DEFAULT NULL, + PRIMARY KEY (`a`), + KEY `b` (`b`) +) ENGINE=InnoDB DEFAULT CHARSET=utf8 +alter table t1 add unique index (c), add index (d); +insert into t1 values(11,11,'aaa','mmm'); +select * from t1; +a b c d +1 1 ab ab +2 2 ac ac +3 2 ad ad +4 4 afe afe +8 9 fff fff +10 10 kkk iii +11 11 aaa mmm +select * from t1 force index(b) order by b; +a b c d +1 1 ab ab +2 2 ac ac +3 2 ad ad +4 4 afe afe +8 9 fff fff +10 10 kkk iii +11 11 aaa mmm +select * from t1 force index(c) order by c; +a b c d +11 11 aaa mmm +1 1 ab ab +2 2 ac ac +3 2 ad ad +4 4 afe afe +8 9 fff fff +10 10 kkk iii +select * from t1 force index(d) order by d; +a b c d +1 1 ab ab +2 2 ac ac +3 2 ad ad +4 4 afe afe +8 9 fff fff +10 10 kkk iii +11 11 aaa mmm +explain select * from t1 force index(b) order by b; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index NULL b 5 NULL 7 +explain select * from t1 force index(c) order by c; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index NULL c 31 NULL 7 +explain select * from t1 force index(d) order by d; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index NULL d 63 NULL 7 +show create table t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` int(11) NOT NULL, + `b` int(11) DEFAULT NULL, + `c` char(10) DEFAULT NULL, + `d` varchar(20) DEFAULT NULL, + PRIMARY KEY (`a`), + UNIQUE KEY `c` (`c`), + KEY `b` (`b`), + KEY `d` (`d`) +) ENGINE=InnoDB DEFAULT CHARSET=utf8 +check table t1; +Table Op Msg_type Msg_text +test.t1 check status OK +drop table t1; +create table t1(a int not null, b int) engine = innodb; +insert into t1 values (1,1),(1,1),(1,1),(1,1); +alter table t1 add unique index (a); +ERROR 23000: Duplicate entry '1' for key 'a' +alter table t1 add unique index (b); +ERROR 23000: Duplicate entry '1' for key 'b' +alter table t1 add unique index (a), add unique index(b); +ERROR 23000: Duplicate entry '1' for key 'a' +show create table t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` int(11) NOT NULL, + `b` int(11) DEFAULT NULL +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +drop table t1; +create table t1(a int not null, c int not null,b int, primary key(a), unique key(c), key(b)) engine = innodb; +alter table t1 drop index c, drop index b; +show create table t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` int(11) NOT NULL, + `c` int(11) NOT NULL, + `b` int(11) DEFAULT NULL, + PRIMARY KEY (`a`) +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +drop table t1; +create table t1(a int not null, b int, primary key(a)) engine = innodb; +alter table t1 add index (b); +show create table t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` int(11) NOT NULL, + `b` int(11) DEFAULT NULL, + PRIMARY KEY (`a`), + KEY `b` (`b`) +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +drop table t1; +create table t1(a int not null, b int, c char(10), d varchar(20), primary key (a)) engine = innodb; +insert into t1 values (1,1,'ab','ab'),(2,2,'ac','ac'),(3,3,'ac','ac'),(4,4,'afe','afe'),(5,4,'affe','affe'); +alter table t1 add unique index (b), add unique index (c), add unique index (d); +ERROR 23000: Duplicate entry '4' for key 'b' +alter table t1 add unique index (c), add unique index (b), add index (d); +ERROR 23000: Duplicate entry 'ac' for key 'c' +show create table t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` int(11) NOT NULL, + `b` int(11) DEFAULT NULL, + `c` char(10) DEFAULT NULL, + `d` varchar(20) DEFAULT NULL, + PRIMARY KEY (`a`) +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +drop table t1; +create table t1(a int not null, b int not null, c int, primary key (a), key(c)) engine=innodb; +insert into t1 values (5,1,5),(4,2,4),(3,3,3),(2,4,2),(1,5,1); +alter table t1 add unique index (b); +insert into t1 values (10,20,20),(11,19,19),(12,18,18),(13,17,17); +show create table t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` int(11) NOT NULL, + `b` int(11) NOT NULL, + `c` int(11) DEFAULT NULL, + PRIMARY KEY (`a`), + UNIQUE KEY `b` (`b`), + KEY `c` (`c`) +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +check table t1; +Table Op Msg_type Msg_text +test.t1 check status OK +explain select * from t1 force index(c) order by c; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index NULL c 5 NULL 9 +explain select * from t1 order by a; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index NULL PRIMARY 4 NULL 9 +explain select * from t1 force index(b) order by b; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index NULL b 4 NULL 9 +select * from t1 order by a; +a b c +1 5 1 +2 4 2 +3 3 3 +4 2 4 +5 1 5 +10 20 20 +11 19 19 +12 18 18 +13 17 17 +select * from t1 force index(b) order by b; +a b c +5 1 5 +4 2 4 +3 3 3 +2 4 2 +1 5 1 +13 17 17 +12 18 18 +11 19 19 +10 20 20 +select * from t1 force index(c) order by c; +a b c +1 5 1 +2 4 2 +3 3 3 +4 2 4 +5 1 5 +13 17 17 +12 18 18 +11 19 19 +10 20 20 +drop table t1; +create table t1(a int not null, b int not null) engine=innodb; +insert into t1 values (1,1); +alter table t1 add primary key(b); +insert into t1 values (2,2); +show create table t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` int(11) NOT NULL, + `b` int(11) NOT NULL, + PRIMARY KEY (`b`) +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +check table t1; +Table Op Msg_type Msg_text +test.t1 check status OK +select * from t1; +a b +1 1 +2 2 +explain select * from t1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 2 +explain select * from t1 order by a; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 2 Using filesort +explain select * from t1 order by b; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index NULL PRIMARY 4 NULL 2 +checksum table t1; +Table Checksum +test.t1 582702641 +drop table t1; +create table t1(a int not null) engine=innodb; +insert into t1 values (1); +alter table t1 add primary key(a); +insert into t1 values (2); +show create table t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` int(11) NOT NULL, + PRIMARY KEY (`a`) +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +check table t1; +Table Op Msg_type Msg_text +test.t1 check status OK +commit; +select * from t1; +a +1 +2 +explain select * from t1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index NULL PRIMARY 4 NULL 2 Using index +explain select * from t1 order by a; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index NULL PRIMARY 4 NULL 2 Using index +drop table t1; +create table t2(d varchar(17) primary key) engine=innodb default charset=utf8; +create table t3(a int primary key) engine=innodb; +insert into t3 values(22),(44),(33),(55),(66); +insert into t2 values ('jejdkrun87'),('adfd72nh9k'), +('adfdpplkeock'),('adfdijnmnb78k'),('adfdijn0loKNHJik'); +create table t1(a int, b blob, c text, d text not null) +engine=innodb default charset = utf8; +insert into t1 +select a,left(repeat(d,100*a),65535),repeat(d,20*a),d from t2,t3; +drop table t2, t3; +select count(*) from t1 where a=44; +count(*) +5 +select a, +length(b),b=left(repeat(d,100*a),65535),length(c),c=repeat(d,20*a),d from t1; +a length(b) b=left(repeat(d,100*a),65535) length(c) c=repeat(d,20*a) d +22 22000 1 4400 1 adfd72nh9k +22 35200 1 7040 1 adfdijn0loKNHJik +22 28600 1 5720 1 adfdijnmnb78k +22 26400 1 5280 1 adfdpplkeock +22 22000 1 4400 1 jejdkrun87 +33 33000 1 6600 1 adfd72nh9k +33 52800 1 10560 1 adfdijn0loKNHJik +33 42900 1 8580 1 adfdijnmnb78k +33 39600 1 7920 1 adfdpplkeock +33 33000 1 6600 1 jejdkrun87 +44 44000 1 8800 1 adfd72nh9k +44 65535 1 14080 1 adfdijn0loKNHJik +44 57200 1 11440 1 adfdijnmnb78k +44 52800 1 10560 1 adfdpplkeock +44 44000 1 8800 1 jejdkrun87 +55 55000 1 11000 1 adfd72nh9k +55 65535 1 17600 1 adfdijn0loKNHJik +55 65535 1 14300 1 adfdijnmnb78k +55 65535 1 13200 1 adfdpplkeock +55 55000 1 11000 1 jejdkrun87 +66 65535 1 13200 1 adfd72nh9k +66 65535 1 21120 1 adfdijn0loKNHJik +66 65535 1 17160 1 adfdijnmnb78k +66 65535 1 15840 1 adfdpplkeock +66 65535 1 13200 1 jejdkrun87 +alter table t1 add primary key (a), add key (b(20)); +ERROR 23000: Duplicate entry '22' for key 'PRIMARY' +delete from t1 where a%2; +check table t1; +Table Op Msg_type Msg_text +test.t1 check status OK +alter table t1 add primary key (a,b(255),c(255)), add key (b(767)); +select count(*) from t1 where a=44; +count(*) +5 +select a, +length(b),b=left(repeat(d,100*a),65535),length(c),c=repeat(d,20*a),d from t1; +a length(b) b=left(repeat(d,100*a),65535) length(c) c=repeat(d,20*a) d +22 22000 1 4400 1 adfd72nh9k +22 35200 1 7040 1 adfdijn0loKNHJik +22 28600 1 5720 1 adfdijnmnb78k +22 26400 1 5280 1 adfdpplkeock +22 22000 1 4400 1 jejdkrun87 +44 44000 1 8800 1 adfd72nh9k +44 65535 1 14080 1 adfdijn0loKNHJik +44 57200 1 11440 1 adfdijnmnb78k +44 52800 1 10560 1 adfdpplkeock +44 44000 1 8800 1 jejdkrun87 +66 65535 1 13200 1 adfd72nh9k +66 65535 1 21120 1 adfdijn0loKNHJik +66 65535 1 17160 1 adfdijnmnb78k +66 65535 1 15840 1 adfdpplkeock +66 65535 1 13200 1 jejdkrun87 +show create table t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` int(11) NOT NULL DEFAULT '0', + `b` blob NOT NULL, + `c` text NOT NULL, + `d` text NOT NULL, + PRIMARY KEY (`a`,`b`(255),`c`(255)), + KEY `b` (`b`(767)) +) ENGINE=InnoDB DEFAULT CHARSET=utf8 +check table t1; +Table Op Msg_type Msg_text +test.t1 check status OK +explain select * from t1 where b like 'adfd%'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL b NULL NULL NULL 15 Using where +create table t2(a int, b varchar(255), primary key(a,b)) engine=innodb; +insert into t2 select a,left(b,255) from t1; +drop table t1; +rename table t2 to t1; +set innodb_lock_wait_timeout=1; +begin; +select a from t1 limit 1 for update; +a +22 +set innodb_lock_wait_timeout=1; +create index t1ba on t1 (b,a); +ERROR HY000: Lock wait timeout exceeded; try restarting transaction +commit; +begin; +select a from t1 limit 1 lock in share mode; +a +22 +create index t1ba on t1 (b,a); +drop index t1ba on t1; +ERROR HY000: Lock wait timeout exceeded; try restarting transaction +commit; +explain select a from t1 order by b; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index NULL t1ba 261 NULL 15 Using index +select a,sleep(2+a/100) from t1 order by b limit 3; +select sleep(1); +sleep(1) +0 +drop index t1ba on t1; +a sleep(2+a/100) +22 0 +44 0 +66 0 +explain select a from t1 order by b; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index NULL PRIMARY 261 NULL 15 Using index; Using filesort +select a from t1 order by b limit 3; +a +22 +66 +44 +commit; +drop table t1; +set global innodb_file_per_table=on; +set global innodb_file_format='Barracuda'; +create table t1(a blob,b blob,c blob,d blob,e blob,f blob,g blob,h blob, +i blob,j blob,k blob,l blob,m blob,n blob,o blob,p blob, +q blob,r blob,s blob,t blob,u blob) +engine=innodb row_format=dynamic; +create index t1a on t1 (a(1)); +create index t1b on t1 (b(1)); +create index t1c on t1 (c(1)); +create index t1d on t1 (d(1)); +create index t1e on t1 (e(1)); +create index t1f on t1 (f(1)); +create index t1g on t1 (g(1)); +create index t1h on t1 (h(1)); +create index t1i on t1 (i(1)); +create index t1j on t1 (j(1)); +create index t1k on t1 (k(1)); +create index t1l on t1 (l(1)); +create index t1m on t1 (m(1)); +create index t1n on t1 (n(1)); +create index t1o on t1 (o(1)); +create index t1p on t1 (p(1)); +create index t1q on t1 (q(1)); +create index t1r on t1 (r(1)); +create index t1s on t1 (s(1)); +create index t1t on t1 (t(1)); +create index t1u on t1 (u(1)); +ERROR HY000: Too big row +create index t1ut on t1 (u(1), t(1)); +ERROR HY000: Too big row +create index t1st on t1 (s(1), t(1)); +show create table t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` blob, + `b` blob, + `c` blob, + `d` blob, + `e` blob, + `f` blob, + `g` blob, + `h` blob, + `i` blob, + `j` blob, + `k` blob, + `l` blob, + `m` blob, + `n` blob, + `o` blob, + `p` blob, + `q` blob, + `r` blob, + `s` blob, + `t` blob, + `u` blob, + KEY `t1a` (`a`(1)), + KEY `t1b` (`b`(1)), + KEY `t1c` (`c`(1)), + KEY `t1d` (`d`(1)), + KEY `t1e` (`e`(1)), + KEY `t1f` (`f`(1)), + KEY `t1g` (`g`(1)), + KEY `t1h` (`h`(1)), + KEY `t1i` (`i`(1)), + KEY `t1j` (`j`(1)), + KEY `t1k` (`k`(1)), + KEY `t1l` (`l`(1)), + KEY `t1m` (`m`(1)), + KEY `t1n` (`n`(1)), + KEY `t1o` (`o`(1)), + KEY `t1p` (`p`(1)), + KEY `t1q` (`q`(1)), + KEY `t1r` (`r`(1)), + KEY `t1s` (`s`(1)), + KEY `t1t` (`t`(1)), + KEY `t1st` (`s`(1),`t`(1)) +) ENGINE=InnoDB DEFAULT CHARSET=latin1 ROW_FORMAT=DYNAMIC +create index t1u on t1 (u(1)); +ERROR HY000: Too big row +alter table t1 row_format=compact; +create index t1u on t1 (u(1)); +drop table t1; +set global innodb_file_per_table=0; +set global innodb_file_format=Antelope; +SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS, UNIQUE_CHECKS=0; +SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0; +CREATE TABLE t1( +c1 BIGINT(12) NOT NULL, +PRIMARY KEY (c1) +) ENGINE=InnoDB DEFAULT CHARSET=latin1; +CREATE TABLE t2( +c1 BIGINT(16) NOT NULL, +c2 BIGINT(12) NOT NULL, +c3 BIGINT(12) NOT NULL, +PRIMARY KEY (c1) +) ENGINE=InnoDB DEFAULT CHARSET=latin1; +ALTER TABLE t2 ADD CONSTRAINT fk_t2_ca +FOREIGN KEY (c3) REFERENCES t1(c1); +SET FOREIGN_KEY_CHECKS=@OLD_FOREIGN_KEY_CHECKS; +SET UNIQUE_CHECKS=@OLD_UNIQUE_CHECKS; +SHOW CREATE TABLE t2; +Table Create Table +t2 CREATE TABLE `t2` ( + `c1` bigint(16) NOT NULL, + `c2` bigint(12) NOT NULL, + `c3` bigint(12) NOT NULL, + PRIMARY KEY (`c1`), + KEY `fk_t2_ca` (`c3`), + CONSTRAINT `fk_t2_ca` FOREIGN KEY (`c3`) REFERENCES `t1` (`c1`) +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +CREATE INDEX i_t2_c3_c2 ON t2(c3, c2); +SHOW CREATE TABLE t2; +Table Create Table +t2 CREATE TABLE `t2` ( + `c1` bigint(16) NOT NULL, + `c2` bigint(12) NOT NULL, + `c3` bigint(12) NOT NULL, + PRIMARY KEY (`c1`), + KEY `i_t2_c3_c2` (`c3`,`c2`), + CONSTRAINT `fk_t2_ca` FOREIGN KEY (`c3`) REFERENCES `t1` (`c1`) +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +SET FOREIGN_KEY_CHECKS=@OLD_FOREIGN_KEY_CHECKS; +SET UNIQUE_CHECKS=@OLD_UNIQUE_CHECKS; +INSERT INTO t2 VALUES(0,0,0); +ERROR 23000: Cannot add or update a child row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `fk_t2_ca` FOREIGN KEY (`c3`) REFERENCES `t1` (`c1`)) +INSERT INTO t1 VALUES(0); +INSERT INTO t2 VALUES(0,0,0); +DROP TABLE t2; +CREATE TABLE t2( +c1 BIGINT(16) NOT NULL, +c2 BIGINT(12) NOT NULL, +c3 BIGINT(12) NOT NULL, +PRIMARY KEY (c1,c2,c3) +) ENGINE=InnoDB DEFAULT CHARSET=latin1; +ALTER TABLE t2 ADD CONSTRAINT fk_t2_ca +FOREIGN KEY (c3) REFERENCES t1(c1); +SHOW CREATE TABLE t2; +Table Create Table +t2 CREATE TABLE `t2` ( + `c1` bigint(16) NOT NULL, + `c2` bigint(12) NOT NULL, + `c3` bigint(12) NOT NULL, + PRIMARY KEY (`c1`,`c2`,`c3`), + KEY `fk_t2_ca` (`c3`), + CONSTRAINT `fk_t2_ca` FOREIGN KEY (`c3`) REFERENCES `t1` (`c1`) +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +CREATE INDEX i_t2_c3_c2 ON t2(c3, c2); +SHOW CREATE TABLE t2; +Table Create Table +t2 CREATE TABLE `t2` ( + `c1` bigint(16) NOT NULL, + `c2` bigint(12) NOT NULL, + `c3` bigint(12) NOT NULL, + PRIMARY KEY (`c1`,`c2`,`c3`), + KEY `i_t2_c3_c2` (`c3`,`c2`), + CONSTRAINT `fk_t2_ca` FOREIGN KEY (`c3`) REFERENCES `t1` (`c1`) +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +INSERT INTO t2 VALUES(0,0,1); +ERROR 23000: Cannot add or update a child row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `fk_t2_ca` FOREIGN KEY (`c3`) REFERENCES `t1` (`c1`)) +INSERT INTO t2 VALUES(0,0,0); +DELETE FROM t1; +ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `fk_t2_ca` FOREIGN KEY (`c3`) REFERENCES `t1` (`c1`)) +DELETE FROM t2; +DROP TABLE t2; +DROP TABLE t1; +CREATE TABLE t1( +c1 BIGINT(12) NOT NULL, +c2 INT(4) NOT NULL, +PRIMARY KEY (c2,c1) +) ENGINE=InnoDB DEFAULT CHARSET=latin1; +CREATE TABLE t2( +c1 BIGINT(16) NOT NULL, +c2 BIGINT(12) NOT NULL, +c3 BIGINT(12) NOT NULL, +PRIMARY KEY (c1) +) ENGINE=InnoDB DEFAULT CHARSET=latin1; +ALTER TABLE t2 ADD CONSTRAINT fk_t2_ca +FOREIGN KEY (c3,c2) REFERENCES t1(c1,c1); +ERROR HY000: Can't create table '#sql-temporary' (errno: 150) +ALTER TABLE t2 ADD CONSTRAINT fk_t2_ca +FOREIGN KEY (c3,c2) REFERENCES t1(c1,c2); +ERROR HY000: Can't create table '#sql-temporary' (errno: 150) +ALTER TABLE t2 ADD CONSTRAINT fk_t2_ca +FOREIGN KEY (c3,c2) REFERENCES t1(c2,c1); +ERROR HY000: Can't create table '#sql-temporary' (errno: 150) +ALTER TABLE t1 MODIFY COLUMN c2 BIGINT(12) NOT NULL; +ALTER TABLE t2 ADD CONSTRAINT fk_t2_ca +FOREIGN KEY (c3,c2) REFERENCES t1(c1,c2); +ERROR HY000: Can't create table '#sql-temporary' (errno: 150) +ALTER TABLE t2 ADD CONSTRAINT fk_t2_ca +FOREIGN KEY (c3,c2) REFERENCES t1(c2,c1); +SHOW CREATE TABLE t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `c1` bigint(12) NOT NULL, + `c2` bigint(12) NOT NULL, + PRIMARY KEY (`c2`,`c1`) +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +SHOW CREATE TABLE t2; +Table Create Table +t2 CREATE TABLE `t2` ( + `c1` bigint(16) NOT NULL, + `c2` bigint(12) NOT NULL, + `c3` bigint(12) NOT NULL, + PRIMARY KEY (`c1`), + KEY `fk_t2_ca` (`c3`,`c2`), + CONSTRAINT `fk_t2_ca` FOREIGN KEY (`c3`, `c2`) REFERENCES `t1` (`c2`, `c1`) +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +CREATE INDEX i_t2_c2_c1 ON t2(c2, c1); +SHOW CREATE TABLE t2; +Table Create Table +t2 CREATE TABLE `t2` ( + `c1` bigint(16) NOT NULL, + `c2` bigint(12) NOT NULL, + `c3` bigint(12) NOT NULL, + PRIMARY KEY (`c1`), + KEY `fk_t2_ca` (`c3`,`c2`), + KEY `i_t2_c2_c1` (`c2`,`c1`), + CONSTRAINT `fk_t2_ca` FOREIGN KEY (`c3`, `c2`) REFERENCES `t1` (`c2`, `c1`) +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +CREATE INDEX i_t2_c3_c1_c2 ON t2(c3, c1, c2); +SHOW CREATE TABLE t2; +Table Create Table +t2 CREATE TABLE `t2` ( + `c1` bigint(16) NOT NULL, + `c2` bigint(12) NOT NULL, + `c3` bigint(12) NOT NULL, + PRIMARY KEY (`c1`), + KEY `fk_t2_ca` (`c3`,`c2`), + KEY `i_t2_c2_c1` (`c2`,`c1`), + KEY `i_t2_c3_c1_c2` (`c3`,`c1`,`c2`), + CONSTRAINT `fk_t2_ca` FOREIGN KEY (`c3`, `c2`) REFERENCES `t1` (`c2`, `c1`) +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +CREATE INDEX i_t2_c3_c2 ON t2(c3, c2); +SHOW CREATE TABLE t2; +Table Create Table +t2 CREATE TABLE `t2` ( + `c1` bigint(16) NOT NULL, + `c2` bigint(12) NOT NULL, + `c3` bigint(12) NOT NULL, + PRIMARY KEY (`c1`), + KEY `i_t2_c2_c1` (`c2`,`c1`), + KEY `i_t2_c3_c1_c2` (`c3`,`c1`,`c2`), + KEY `i_t2_c3_c2` (`c3`,`c2`), + CONSTRAINT `fk_t2_ca` FOREIGN KEY (`c3`, `c2`) REFERENCES `t1` (`c2`, `c1`) +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +DROP TABLE t2; +DROP TABLE t1; +SET GLOBAL innodb_file_format_check=@save_innodb_file_format_check; === added file 'mysql-test/r/innodb-index_ucs2.result' --- a/mysql-test/r/innodb-index_ucs2.result 1970-01-01 00:00:00 +0000 +++ b/mysql-test/r/innodb-index_ucs2.result 2009-06-09 13:19:13 +0000 @@ -0,0 +1,116 @@ +create table t1(a int not null, b int, c char(10), d varchar(20), primary key (a)) engine = innodb default charset=ucs2; +insert into t1 values (1,1,'ab','ab'),(2,2,'ac','ac'),(3,2,'ad','ad'),(4,4,'afe','afe'); +commit; +alter table t1 add unique index (b); +ERROR 23000: Duplicate entry '2' for key 'b' +insert into t1 values(8,9,'fff','fff'); +select * from t1; +a b c d +1 1 ab ab +2 2 ac ac +3 2 ad ad +4 4 afe afe +8 9 fff fff +show create table t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` int(11) NOT NULL, + `b` int(11) DEFAULT NULL, + `c` char(10) DEFAULT NULL, + `d` varchar(20) DEFAULT NULL, + PRIMARY KEY (`a`) +) ENGINE=InnoDB DEFAULT CHARSET=ucs2 +alter table t1 add index (b); +insert into t1 values(10,10,'kkk','iii'); +select * from t1; +a b c d +1 1 ab ab +2 2 ac ac +3 2 ad ad +4 4 afe afe +8 9 fff fff +10 10 kkk iii +select * from t1 force index(b) order by b; +a b c d +1 1 ab ab +2 2 ac ac +3 2 ad ad +4 4 afe afe +8 9 fff fff +10 10 kkk iii +explain select * from t1 force index(b) order by b; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index NULL b 5 NULL 6 +show create table t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` int(11) NOT NULL, + `b` int(11) DEFAULT NULL, + `c` char(10) DEFAULT NULL, + `d` varchar(20) DEFAULT NULL, + PRIMARY KEY (`a`), + KEY `b` (`b`) +) ENGINE=InnoDB DEFAULT CHARSET=ucs2 +alter table t1 add unique index (c), add index (d); +insert into t1 values(11,11,'aaa','mmm'); +select * from t1; +a b c d +1 1 ab ab +2 2 ac ac +3 2 ad ad +4 4 afe afe +8 9 fff fff +10 10 kkk iii +11 11 aaa mmm +select * from t1 force index(b) order by b; +a b c d +1 1 ab ab +2 2 ac ac +3 2 ad ad +4 4 afe afe +8 9 fff fff +10 10 kkk iii +11 11 aaa mmm +select * from t1 force index(c) order by c; +a b c d +11 11 aaa mmm +1 1 ab ab +2 2 ac ac +3 2 ad ad +4 4 afe afe +8 9 fff fff +10 10 kkk iii +select * from t1 force index(d) order by d; +a b c d +1 1 ab ab +2 2 ac ac +3 2 ad ad +4 4 afe afe +8 9 fff fff +10 10 kkk iii +11 11 aaa mmm +explain select * from t1 force index(b) order by b; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index NULL b 5 NULL 7 +explain select * from t1 force index(c) order by c; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index NULL c 21 NULL 7 +explain select * from t1 force index(d) order by d; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index NULL d 43 NULL 7 +show create table t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` int(11) NOT NULL, + `b` int(11) DEFAULT NULL, + `c` char(10) DEFAULT NULL, + `d` varchar(20) DEFAULT NULL, + PRIMARY KEY (`a`), + UNIQUE KEY `c` (`c`), + KEY `b` (`b`), + KEY `d` (`d`) +) ENGINE=InnoDB DEFAULT CHARSET=ucs2 +check table t1; +Table Op Msg_type Msg_text +test.t1 check status OK +drop table t1; === added file 'mysql-test/r/innodb-lock.result' --- a/mysql-test/r/innodb-lock.result 1970-01-01 00:00:00 +0000 +++ b/mysql-test/r/innodb-lock.result 2009-06-09 13:19:13 +0000 @@ -0,0 +1,57 @@ +set global innodb_table_locks=1; +select @@innodb_table_locks; +@@innodb_table_locks +1 +drop table if exists t1; +set @@innodb_table_locks=1; +create table t1 (id integer, x integer) engine=INNODB; +insert into t1 values(0, 0); +set autocommit=0; +SELECT * from t1 where id = 0 FOR UPDATE; +id x +0 0 +set autocommit=0; +lock table t1 write; +update t1 set x=1 where id = 0; +select * from t1; +id x +0 1 +commit; +update t1 set x=2 where id = 0; +commit; +unlock tables; +select * from t1; +id x +0 2 +commit; +drop table t1; +set @@innodb_table_locks=0; +create table t1 (id integer primary key, x integer) engine=INNODB; +insert into t1 values(0, 0),(1,1),(2,2); +commit; +SELECT * from t1 where id = 0 FOR UPDATE; +id x +0 0 +set autocommit=0; +set @@innodb_table_locks=0; +lock table t1 write; +update t1 set x=10 where id = 2; +SELECT * from t1 where id = 2; +id x +2 2 +UPDATE t1 set x=3 where id = 2; +commit; +SELECT * from t1; +id x +0 0 +1 1 +2 3 +commit; +unlock tables; +commit; +select * from t1; +id x +0 0 +1 1 +2 10 +drop table t1; === removed file 'mysql-test/r/innodb-lock.result' --- a/mysql-test/r/innodb-lock.result 2004-10-27 16:52:41 +0000 +++ b/mysql-test/r/innodb-lock.result 1970-01-01 00:00:00 +0000 @@ -1,57 +0,0 @@ -set global innodb_table_locks=1; -select @@innodb_table_locks; -@@innodb_table_locks -1 -drop table if exists t1; -set @@innodb_table_locks=1; -create table t1 (id integer, x integer) engine=INNODB; -insert into t1 values(0, 0); -set autocommit=0; -SELECT * from t1 where id = 0 FOR UPDATE; -id x -0 0 -set autocommit=0; -lock table t1 write; -update t1 set x=1 where id = 0; -select * from t1; -id x -0 1 -commit; -update t1 set x=2 where id = 0; -commit; -unlock tables; -select * from t1; -id x -0 2 -commit; -drop table t1; -set @@innodb_table_locks=0; -create table t1 (id integer primary key, x integer) engine=INNODB; -insert into t1 values(0, 0),(1,1),(2,2); -commit; -SELECT * from t1 where id = 0 FOR UPDATE; -id x -0 0 -set autocommit=0; -set @@innodb_table_locks=0; -lock table t1 write; -update t1 set x=10 where id = 2; -SELECT * from t1 where id = 2; -id x -2 2 -UPDATE t1 set x=3 where id = 2; -commit; -SELECT * from t1; -id x -0 0 -1 1 -2 3 -commit; -unlock tables; -commit; -select * from t1; -id x -0 0 -1 1 -2 10 -drop table t1; === added file 'mysql-test/r/innodb-replace.result' --- a/mysql-test/r/innodb-replace.result 1970-01-01 00:00:00 +0000 +++ b/mysql-test/r/innodb-replace.result 2009-06-09 13:19:13 +0000 @@ -0,0 +1,13 @@ +drop table if exists t1; +create table t1 (c1 char(5) unique not null, c2 int, stamp timestamp) engine=innodb; +select * from t1; +c1 c2 stamp +replace delayed into t1 (c1, c2) values ( "text1","11"); +ERROR HY000: DELAYED option not supported for table 't1' +select * from t1; +c1 c2 stamp +replace delayed into t1 (c1, c2) values ( "text1","12"); +ERROR HY000: DELAYED option not supported for table 't1' +select * from t1; +c1 c2 stamp +drop table t1; === removed file 'mysql-test/r/innodb-replace.result' --- a/mysql-test/r/innodb-replace.result 2008-06-03 11:25:41 +0000 +++ b/mysql-test/r/innodb-replace.result 1970-01-01 00:00:00 +0000 @@ -1,13 +0,0 @@ -drop table if exists t1; -create table t1 (c1 char(5) unique not null, c2 int, stamp timestamp) engine=innodb; -select * from t1; -c1 c2 stamp -replace delayed into t1 (c1, c2) values ( "text1","11"); -ERROR HY000: DELAYED option not supported for table 't1' -select * from t1; -c1 c2 stamp -replace delayed into t1 (c1, c2) values ( "text1","12"); -ERROR HY000: DELAYED option not supported for table 't1' -select * from t1; -c1 c2 stamp -drop table t1; === added file 'mysql-test/r/innodb-semi-consistent.result' --- a/mysql-test/r/innodb-semi-consistent.result 1970-01-01 00:00:00 +0000 +++ b/mysql-test/r/innodb-semi-consistent.result 2009-06-09 13:19:13 +0000 @@ -0,0 +1,40 @@ +drop table if exists t1; +set binlog_format=mixed; +set session transaction isolation level repeatable read; +create table t1(a int not null) engine=innodb DEFAULT CHARSET=latin1; +insert into t1 values (1),(2),(3),(4),(5),(6),(7); +set autocommit=0; +select * from t1 where a=3 lock in share mode; +a +3 +set binlog_format=mixed; +set session transaction isolation level repeatable read; +set autocommit=0; +update t1 set a=10 where a=5; +ERROR HY000: Lock wait timeout exceeded; try restarting transaction +commit; +set session transaction isolation level read committed; +update t1 set a=10 where a=5; +select * from t1 where a=2 for update; +ERROR HY000: Lock wait timeout exceeded; try restarting transaction +select * from t1 where a=2 limit 1 for update; +a +2 +update t1 set a=11 where a=6; +update t1 set a=12 where a=2; +ERROR HY000: Lock wait timeout exceeded; try restarting transaction +update t1 set a=13 where a=1; +ERROR HY000: Lock wait timeout exceeded; try restarting transaction +commit; +update t1 set a=14 where a=1; +commit; +select * from t1; +a +14 +2 +3 +4 +10 +11 +7 +drop table t1; === removed file 'mysql-test/r/innodb-semi-consistent.result' --- a/mysql-test/r/innodb-semi-consistent.result 2009-01-13 14:14:11 +0000 +++ b/mysql-test/r/innodb-semi-consistent.result 1970-01-01 00:00:00 +0000 @@ -1,40 +0,0 @@ -drop table if exists t1; -set binlog_format=mixed; -set session transaction isolation level repeatable read; -create table t1(a int not null) engine=innodb DEFAULT CHARSET=latin1; -insert into t1 values (1),(2),(3),(4),(5),(6),(7); -set autocommit=0; -select * from t1 where a=3 lock in share mode; -a -3 -set binlog_format=mixed; -set session transaction isolation level repeatable read; -set autocommit=0; -update t1 set a=10 where a=5; -ERROR HY000: Lock wait timeout exceeded; try restarting transaction -commit; -set session transaction isolation level read committed; -update t1 set a=10 where a=5; -select * from t1 where a=2 for update; -ERROR HY000: Lock wait timeout exceeded; try restarting transaction -select * from t1 where a=2 limit 1 for update; -a -2 -update t1 set a=11 where a=6; -update t1 set a=12 where a=2; -ERROR HY000: Lock wait timeout exceeded; try restarting transaction -update t1 set a=13 where a=1; -ERROR HY000: Lock wait timeout exceeded; try restarting transaction -commit; -update t1 set a=14 where a=1; -commit; -select * from t1; -a -14 -2 -3 -4 -10 -11 -7 -drop table t1; === added file 'mysql-test/r/innodb-timeout.result' --- a/mysql-test/r/innodb-timeout.result 1970-01-01 00:00:00 +0000 +++ b/mysql-test/r/innodb-timeout.result 2009-06-09 13:19:13 +0000 @@ -0,0 +1,38 @@ +set global innodb_lock_wait_timeout=42; +select @@innodb_lock_wait_timeout; +@@innodb_lock_wait_timeout +42 +set innodb_lock_wait_timeout=1; +select @@innodb_lock_wait_timeout; +@@innodb_lock_wait_timeout +1 +select @@innodb_lock_wait_timeout; +@@innodb_lock_wait_timeout +42 +set global innodb_lock_wait_timeout=347; +select @@innodb_lock_wait_timeout; +@@innodb_lock_wait_timeout +42 +set innodb_lock_wait_timeout=1; +select @@innodb_lock_wait_timeout; +@@innodb_lock_wait_timeout +1 +select @@innodb_lock_wait_timeout; +@@innodb_lock_wait_timeout +347 +create table t1(a int primary key)engine=innodb; +begin; +insert into t1 values(1),(2),(3); +select * from t1 for update; +commit; +a +1 +2 +3 +begin; +insert into t1 values(4); +select * from t1 for update; +commit; +ERROR HY000: Lock wait timeout exceeded; try restarting transaction +drop table t1; +set global innodb_lock_wait_timeout=50; === added file 'mysql-test/r/innodb-use-sys-malloc.result' --- a/mysql-test/r/innodb-use-sys-malloc.result 1970-01-01 00:00:00 +0000 +++ b/mysql-test/r/innodb-use-sys-malloc.result 2009-06-09 13:19:13 +0000 @@ -0,0 +1,48 @@ +SELECT @@GLOBAL.innodb_use_sys_malloc; +@@GLOBAL.innodb_use_sys_malloc +1 +1 Expected +SET @@GLOBAL.innodb_use_sys_malloc=0; +ERROR HY000: Variable 'innodb_use_sys_malloc' is a read only variable +Expected error 'Read only variable' +SELECT @@GLOBAL.innodb_use_sys_malloc; +@@GLOBAL.innodb_use_sys_malloc +1 +1 Expected +drop table if exists t1; +create table t1(a int not null) engine=innodb DEFAULT CHARSET=latin1; +insert into t1 values (1),(2),(3),(4),(5),(6),(7); +select * from t1; +a +1 +2 +3 +4 +5 +6 +7 +drop table t1; +SELECT @@GLOBAL.innodb_use_sys_malloc; +@@GLOBAL.innodb_use_sys_malloc +1 +1 Expected +SET @@GLOBAL.innodb_use_sys_malloc=0; +ERROR HY000: Variable 'innodb_use_sys_malloc' is a read only variable +Expected error 'Read only variable' +SELECT @@GLOBAL.innodb_use_sys_malloc; +@@GLOBAL.innodb_use_sys_malloc +1 +1 Expected +drop table if exists t1; +create table t1(a int not null) engine=innodb DEFAULT CHARSET=latin1; +insert into t1 values (1),(2),(3),(4),(5),(6),(7); +select * from t1; +a +1 +2 +3 +4 +5 +6 +7 +drop table t1; === added file 'mysql-test/r/innodb-zip.result' --- a/mysql-test/r/innodb-zip.result 1970-01-01 00:00:00 +0000 +++ b/mysql-test/r/innodb-zip.result 2009-06-09 15:08:46 +0000 @@ -0,0 +1,421 @@ +set global innodb_file_per_table=off; +set global innodb_file_format=`0`; +create table t0(a int primary key) engine=innodb row_format=compressed; +Warnings: +Warning 1478 InnoDB: ROW_FORMAT=COMPRESSED requires innodb_file_per_table. +Warning 1478 InnoDB: assuming ROW_FORMAT=COMPACT. +create table t00(a int primary key) engine=innodb +key_block_size=4 row_format=compressed; +Warnings: +Warning 1478 InnoDB: KEY_BLOCK_SIZE requires innodb_file_per_table. +Warning 1478 InnoDB: KEY_BLOCK_SIZE requires innodb_file_format > Antelope. +Warning 1478 InnoDB: ignoring KEY_BLOCK_SIZE=4. +Warning 1478 InnoDB: ROW_FORMAT=COMPRESSED requires innodb_file_per_table. +Warning 1478 InnoDB: assuming ROW_FORMAT=COMPACT. +create table t1(a int primary key) engine=innodb row_format=dynamic; +Warnings: +Warning 1478 InnoDB: ROW_FORMAT=DYNAMIC requires innodb_file_per_table. +Warning 1478 InnoDB: assuming ROW_FORMAT=COMPACT. +create table t2(a int primary key) engine=innodb row_format=redundant; +create table t3(a int primary key) engine=innodb row_format=compact; +create table t4(a int primary key) engine=innodb key_block_size=9; +Warnings: +Warning 1478 InnoDB: KEY_BLOCK_SIZE requires innodb_file_per_table. +Warning 1478 InnoDB: KEY_BLOCK_SIZE requires innodb_file_format > Antelope. +Warning 1478 InnoDB: ignoring KEY_BLOCK_SIZE=9. +create table t5(a int primary key) engine=innodb +key_block_size=1 row_format=redundant; +Warnings: +Warning 1478 InnoDB: KEY_BLOCK_SIZE requires innodb_file_per_table. +Warning 1478 InnoDB: KEY_BLOCK_SIZE requires innodb_file_format > Antelope. +Warning 1478 InnoDB: ignoring KEY_BLOCK_SIZE=1. +set global innodb_file_per_table=on; +create table t6(a int primary key) engine=innodb +key_block_size=1 row_format=redundant; +Warnings: +Warning 1478 InnoDB: KEY_BLOCK_SIZE requires innodb_file_format > Antelope. +Warning 1478 InnoDB: ignoring KEY_BLOCK_SIZE=1. +set global innodb_file_format=`1`; +create table t7(a int primary key) engine=innodb +key_block_size=1 row_format=redundant; +Warnings: +Warning 1478 InnoDB: ignoring KEY_BLOCK_SIZE=1 unless ROW_FORMAT=COMPRESSED. +create table t8(a int primary key) engine=innodb +key_block_size=1 row_format=fixed; +Warnings: +Warning 1478 InnoDB: ignoring KEY_BLOCK_SIZE=1 unless ROW_FORMAT=COMPRESSED. +Warning 1478 InnoDB: assuming ROW_FORMAT=COMPACT. +create table t9(a int primary key) engine=innodb +key_block_size=1 row_format=compact; +Warnings: +Warning 1478 InnoDB: ignoring KEY_BLOCK_SIZE=1 unless ROW_FORMAT=COMPRESSED. +create table t10(a int primary key) engine=innodb +key_block_size=1 row_format=dynamic; +Warnings: +Warning 1478 InnoDB: ignoring KEY_BLOCK_SIZE=1 unless ROW_FORMAT=COMPRESSED. +create table t11(a int primary key) engine=innodb +key_block_size=1 row_format=compressed; +create table t12(a int primary key) engine=innodb +key_block_size=1; +create table t13(a int primary key) engine=innodb +row_format=compressed; +create table t14(a int primary key) engine=innodb key_block_size=9; +Warnings: +Warning 1478 InnoDB: ignoring KEY_BLOCK_SIZE=9. +SELECT table_schema, table_name, row_format +FROM information_schema.tables WHERE engine='innodb'; +table_schema table_name row_format +test t0 Compact +test t00 Compact +test t1 Compact +test t10 Dynamic +test t11 Compressed +test t12 Compressed +test t13 Compressed +test t14 Compact +test t2 Redundant +test t3 Compact +test t4 Compact +test t5 Redundant +test t6 Redundant +test t7 Redundant +test t8 Compact +test t9 Compact +drop table t0,t00,t2,t3,t4,t5,t6,t7,t8,t9,t10,t11,t12,t13,t14; +alter table t1 key_block_size=0; +Warnings: +Warning 1478 InnoDB: ignoring KEY_BLOCK_SIZE=0. +alter table t1 row_format=dynamic; +SELECT table_schema, table_name, row_format +FROM information_schema.tables WHERE engine='innodb'; +table_schema table_name row_format +test t1 Dynamic +alter table t1 row_format=compact; +SELECT table_schema, table_name, row_format +FROM information_schema.tables WHERE engine='innodb'; +table_schema table_name row_format +test t1 Compact +alter table t1 row_format=redundant; +SELECT table_schema, table_name, row_format +FROM information_schema.tables WHERE engine='innodb'; +table_schema table_name row_format +test t1 Redundant +drop table t1; +create table t1(a int not null, b text, index(b(10))) engine=innodb +key_block_size=1; +create table t2(b text)engine=innodb; +insert into t2 values(concat('1abcdefghijklmnopqrstuvwxyz', repeat('A',5000))); +insert into t1 select 1, b from t2; +commit; +begin; +update t1 set b=repeat('B',100); +select a,left(b,40) from t1 natural join t2; +a left(b,40) +1 1abcdefghijklmnopqrstuvwxyzAAAAAAAAAAAAA +rollback; +select a,left(b,40) from t1 natural join t2; +a left(b,40) +1 1abcdefghijklmnopqrstuvwxyzAAAAAAAAAAAAA +SELECT table_schema, table_name, row_format +FROM information_schema.tables WHERE engine='innodb'; +table_schema table_name row_format +test t1 Compressed +test t2 Compact +drop table t1,t2; +SET SESSION innodb_strict_mode = off; +CREATE TABLE t1( +c TEXT NOT NULL, d TEXT NOT NULL, +PRIMARY KEY (c(767),d(767))) +ENGINE=InnoDB ROW_FORMAT=COMPRESSED KEY_BLOCK_SIZE=1 CHARSET=ASCII; +ERROR 42000: Row size too large. The maximum row size for the used table type, not counting BLOBs, is 8126. You have to change some columns to TEXT or BLOBs +CREATE TABLE t1( +c TEXT NOT NULL, d TEXT NOT NULL, +PRIMARY KEY (c(767),d(767))) +ENGINE=InnoDB ROW_FORMAT=COMPRESSED KEY_BLOCK_SIZE=2 CHARSET=ASCII; +ERROR 42000: Row size too large. The maximum row size for the used table type, not counting BLOBs, is 8126. You have to change some columns to TEXT or BLOBs +CREATE TABLE t1( +c TEXT NOT NULL, d TEXT NOT NULL, +PRIMARY KEY (c(767),d(767))) +ENGINE=InnoDB ROW_FORMAT=COMPRESSED KEY_BLOCK_SIZE=4 CHARSET=ASCII; +drop table t1; +CREATE TABLE t1(c TEXT, PRIMARY KEY (c(440))) +ENGINE=InnoDB ROW_FORMAT=COMPRESSED KEY_BLOCK_SIZE=1 CHARSET=ASCII; +ERROR 42000: Row size too large. The maximum row size for the used table type, not counting BLOBs, is 8126. You have to change some columns to TEXT or BLOBs +CREATE TABLE t1(c TEXT, PRIMARY KEY (c(438))) +ENGINE=InnoDB ROW_FORMAT=COMPRESSED KEY_BLOCK_SIZE=1 CHARSET=ASCII; +INSERT INTO t1 VALUES(REPEAT('A',512)),(REPEAT('B',512)); +DROP TABLE t1; +create table t1( c1 int not null, c2 blob, c3 blob, c4 blob, +primary key(c1, c2(22), c3(22))) +engine = innodb row_format = dynamic; +begin; +insert into t1 values(1, repeat('A', 20000), repeat('B', 20000), +repeat('C', 20000)); +update t1 set c3 = repeat('D', 20000) where c1 = 1; +commit; +select count(*) from t1 where c2 = repeat('A', 20000); +count(*) +1 +select count(*) from t1 where c3 = repeat('D', 20000); +count(*) +1 +select count(*) from t1 where c4 = repeat('C', 20000); +count(*) +1 +update t1 set c3 = repeat('E', 20000) where c1 = 1; +drop table t1; +set global innodb_file_format=`0`; +select @@innodb_file_format; +@@innodb_file_format +Antelope +set global innodb_file_format=`1`; +select @@innodb_file_format; +@@innodb_file_format +Barracuda +set global innodb_file_format=`2`; +ERROR HY000: Incorrect arguments to SET +set global innodb_file_format=`-1`; +ERROR HY000: Incorrect arguments to SET +set global innodb_file_format=`Antelope`; +set global innodb_file_format=`Barracuda`; +set global innodb_file_format=`Cheetah`; +ERROR HY000: Incorrect arguments to SET +set global innodb_file_format=`abc`; +ERROR HY000: Incorrect arguments to SET +set global innodb_file_format=`1a`; +ERROR HY000: Incorrect arguments to SET +set global innodb_file_format=``; +ERROR HY000: Incorrect arguments to SET +set global innodb_file_per_table = on; +set global innodb_file_format = `1`; +set innodb_strict_mode = off; +create table t1 (id int primary key) engine = innodb key_block_size = 0; +Warnings: +Warning 1478 InnoDB: ignoring KEY_BLOCK_SIZE=0. +drop table t1; +set innodb_strict_mode = on; +create table t1 (id int primary key) engine = innodb key_block_size = 0; +ERROR HY000: Can't create table 'test.t1' (errno: 1478) +show errors; +Level Code Message +Error 1478 InnoDB: invalid KEY_BLOCK_SIZE = 0. Valid values are [1, 2, 4, 8, 16] +Error 1005 Can't create table 'test.t1' (errno: 1478) +create table t2 (id int primary key) engine = innodb key_block_size = 9; +ERROR HY000: Can't create table 'test.t2' (errno: 1478) +show errors; +Level Code Message +Error 1478 InnoDB: invalid KEY_BLOCK_SIZE = 9. Valid values are [1, 2, 4, 8, 16] +Error 1005 Can't create table 'test.t2' (errno: 1478) +create table t3 (id int primary key) engine = innodb key_block_size = 1; +create table t4 (id int primary key) engine = innodb key_block_size = 2; +create table t5 (id int primary key) engine = innodb key_block_size = 4; +create table t6 (id int primary key) engine = innodb key_block_size = 8; +create table t7 (id int primary key) engine = innodb key_block_size = 16; +create table t8 (id int primary key) engine = innodb row_format = compressed; +create table t9 (id int primary key) engine = innodb row_format = dynamic; +create table t10(id int primary key) engine = innodb row_format = compact; +create table t11(id int primary key) engine = innodb row_format = redundant; +SELECT table_schema, table_name, row_format +FROM information_schema.tables WHERE engine='innodb'; +table_schema table_name row_format +test t10 Compact +test t11 Redundant +test t3 Compressed +test t4 Compressed +test t5 Compressed +test t6 Compressed +test t7 Compressed +test t8 Compressed +test t9 Dynamic +drop table t3, t4, t5, t6, t7, t8, t9, t10, t11; +create table t1 (id int primary key) engine = innodb +key_block_size = 8 row_format = compressed; +create table t2 (id int primary key) engine = innodb +key_block_size = 8 row_format = redundant; +ERROR HY000: Can't create table 'test.t2' (errno: 1478) +show errors; +Level Code Message +Error 1478 InnoDB: cannot specify ROW_FORMAT = REDUNDANT with KEY_BLOCK_SIZE. +Error 1005 Can't create table 'test.t2' (errno: 1478) +create table t3 (id int primary key) engine = innodb +key_block_size = 8 row_format = compact; +ERROR HY000: Can't create table 'test.t3' (errno: 1478) +show errors; +Level Code Message +Error 1478 InnoDB: cannot specify ROW_FORMAT = COMPACT with KEY_BLOCK_SIZE. +Error 1005 Can't create table 'test.t3' (errno: 1478) +create table t4 (id int primary key) engine = innodb +key_block_size = 8 row_format = dynamic; +ERROR HY000: Can't create table 'test.t4' (errno: 1478) +show errors; +Level Code Message +Error 1478 InnoDB: cannot specify ROW_FORMAT = DYNAMIC with KEY_BLOCK_SIZE. +Error 1005 Can't create table 'test.t4' (errno: 1478) +create table t5 (id int primary key) engine = innodb +key_block_size = 8 row_format = default; +ERROR HY000: Can't create table 'test.t5' (errno: 1478) +show errors; +Level Code Message +Error 1478 InnoDB: cannot specify ROW_FORMAT = COMPACT with KEY_BLOCK_SIZE. +Error 1005 Can't create table 'test.t5' (errno: 1478) +SELECT table_schema, table_name, row_format +FROM information_schema.tables WHERE engine='innodb'; +table_schema table_name row_format +test t1 Compressed +drop table t1; +create table t1 (id int primary key) engine = innodb +key_block_size = 9 row_format = redundant; +ERROR HY000: Can't create table 'test.t1' (errno: 1478) +show errors; +Level Code Message +Error 1478 InnoDB: invalid KEY_BLOCK_SIZE = 9. Valid values are [1, 2, 4, 8, 16] +Error 1478 InnoDB: cannot specify ROW_FORMAT = REDUNDANT with KEY_BLOCK_SIZE. +Error 1005 Can't create table 'test.t1' (errno: 1478) +create table t2 (id int primary key) engine = innodb +key_block_size = 9 row_format = compact; +ERROR HY000: Can't create table 'test.t2' (errno: 1478) +show errors; +Level Code Message +Error 1478 InnoDB: invalid KEY_BLOCK_SIZE = 9. Valid values are [1, 2, 4, 8, 16] +Error 1478 InnoDB: cannot specify ROW_FORMAT = COMPACT with KEY_BLOCK_SIZE. +Error 1005 Can't create table 'test.t2' (errno: 1478) +create table t2 (id int primary key) engine = innodb +key_block_size = 9 row_format = dynamic; +ERROR HY000: Can't create table 'test.t2' (errno: 1478) +show errors; +Level Code Message +Error 1478 InnoDB: invalid KEY_BLOCK_SIZE = 9. Valid values are [1, 2, 4, 8, 16] +Error 1478 InnoDB: cannot specify ROW_FORMAT = DYNAMIC with KEY_BLOCK_SIZE. +Error 1005 Can't create table 'test.t2' (errno: 1478) +SELECT table_schema, table_name, row_format +FROM information_schema.tables WHERE engine='innodb'; +table_schema table_name row_format +set global innodb_file_per_table = off; +create table t1 (id int primary key) engine = innodb key_block_size = 1; +ERROR HY000: Can't create table 'test.t1' (errno: 1478) +show errors; +Level Code Message +Error 1478 InnoDB: KEY_BLOCK_SIZE requires innodb_file_per_table. +Error 1005 Can't create table 'test.t1' (errno: 1478) +create table t2 (id int primary key) engine = innodb key_block_size = 2; +ERROR HY000: Can't create table 'test.t2' (errno: 1478) +show errors; +Level Code Message +Error 1478 InnoDB: KEY_BLOCK_SIZE requires innodb_file_per_table. +Error 1005 Can't create table 'test.t2' (errno: 1478) +create table t3 (id int primary key) engine = innodb key_block_size = 4; +ERROR HY000: Can't create table 'test.t3' (errno: 1478) +show errors; +Level Code Message +Error 1478 InnoDB: KEY_BLOCK_SIZE requires innodb_file_per_table. +Error 1005 Can't create table 'test.t3' (errno: 1478) +create table t4 (id int primary key) engine = innodb key_block_size = 8; +ERROR HY000: Can't create table 'test.t4' (errno: 1478) +show errors; +Level Code Message +Error 1478 InnoDB: KEY_BLOCK_SIZE requires innodb_file_per_table. +Error 1005 Can't create table 'test.t4' (errno: 1478) +create table t5 (id int primary key) engine = innodb key_block_size = 16; +ERROR HY000: Can't create table 'test.t5' (errno: 1478) +show errors; +Level Code Message +Error 1478 InnoDB: KEY_BLOCK_SIZE requires innodb_file_per_table. +Error 1005 Can't create table 'test.t5' (errno: 1478) +create table t6 (id int primary key) engine = innodb row_format = compressed; +ERROR HY000: Can't create table 'test.t6' (errno: 1478) +show errors; +Level Code Message +Error 1478 InnoDB: ROW_FORMAT=COMPRESSED requires innodb_file_per_table. +Error 1005 Can't create table 'test.t6' (errno: 1478) +create table t7 (id int primary key) engine = innodb row_format = dynamic; +ERROR HY000: Can't create table 'test.t7' (errno: 1478) +show errors; +Level Code Message +Error 1478 InnoDB: ROW_FORMAT=DYNAMIC requires innodb_file_per_table. +Error 1005 Can't create table 'test.t7' (errno: 1478) +create table t8 (id int primary key) engine = innodb row_format = compact; +create table t9 (id int primary key) engine = innodb row_format = redundant; +SELECT table_schema, table_name, row_format +FROM information_schema.tables WHERE engine='innodb'; +table_schema table_name row_format +test t8 Compact +test t9 Redundant +drop table t8, t9; +set global innodb_file_per_table = on; +set global innodb_file_format = `0`; +create table t1 (id int primary key) engine = innodb key_block_size = 1; +ERROR HY000: Can't create table 'test.t1' (errno: 1478) +show errors; +Level Code Message +Error 1478 InnoDB: KEY_BLOCK_SIZE requires innodb_file_format > Antelope. +Error 1005 Can't create table 'test.t1' (errno: 1478) +create table t2 (id int primary key) engine = innodb key_block_size = 2; +ERROR HY000: Can't create table 'test.t2' (errno: 1478) +show errors; +Level Code Message +Error 1478 InnoDB: KEY_BLOCK_SIZE requires innodb_file_format > Antelope. +Error 1005 Can't create table 'test.t2' (errno: 1478) +create table t3 (id int primary key) engine = innodb key_block_size = 4; +ERROR HY000: Can't create table 'test.t3' (errno: 1478) +show errors; +Level Code Message +Error 1478 InnoDB: KEY_BLOCK_SIZE requires innodb_file_format > Antelope. +Error 1005 Can't create table 'test.t3' (errno: 1478) +create table t4 (id int primary key) engine = innodb key_block_size = 8; +ERROR HY000: Can't create table 'test.t4' (errno: 1478) +show errors; +Level Code Message +Error 1478 InnoDB: KEY_BLOCK_SIZE requires innodb_file_format > Antelope. +Error 1005 Can't create table 'test.t4' (errno: 1478) +create table t5 (id int primary key) engine = innodb key_block_size = 16; +ERROR HY000: Can't create table 'test.t5' (errno: 1478) +show errors; +Level Code Message +Error 1478 InnoDB: KEY_BLOCK_SIZE requires innodb_file_format > Antelope. +Error 1005 Can't create table 'test.t5' (errno: 1478) +create table t6 (id int primary key) engine = innodb row_format = compressed; +ERROR HY000: Can't create table 'test.t6' (errno: 1478) +show errors; +Level Code Message +Error 1478 InnoDB: ROW_FORMAT=COMPRESSED requires innodb_file_format > Antelope. +Error 1005 Can't create table 'test.t6' (errno: 1478) +create table t7 (id int primary key) engine = innodb row_format = dynamic; +ERROR HY000: Can't create table 'test.t7' (errno: 1478) +show errors; +Level Code Message +Error 1478 InnoDB: ROW_FORMAT=DYNAMIC requires innodb_file_format > Antelope. +Error 1005 Can't create table 'test.t7' (errno: 1478) +create table t8 (id int primary key) engine = innodb row_format = compact; +create table t9 (id int primary key) engine = innodb row_format = redundant; +SELECT table_schema, table_name, row_format +FROM information_schema.tables WHERE engine='innodb'; +table_schema table_name row_format +test t8 Compact +test t9 Redundant +drop table t8, t9; +set global innodb_file_per_table=0; +set global innodb_file_format=Antelope; +set global innodb_file_per_table=on; +set global innodb_file_format=`Barracuda`; +set global innodb_file_format_check=`Antelope`; +create table normal_table ( +c1 int +) engine = innodb; +select @@innodb_file_format_check; +@@innodb_file_format_check +Antelope +create table zip_table ( +c1 int +) engine = innodb key_block_size = 8; +select @@innodb_file_format_check; +@@innodb_file_format_check +Barracuda +set global innodb_file_format_check=`Antelope`; +select @@innodb_file_format_check; +@@innodb_file_format_check +Antelope +show table status; +select @@innodb_file_format_check; +@@innodb_file_format_check +Barracuda +drop table normal_table, zip_table; === added file 'mysql-test/r/innodb.result' --- a/mysql-test/r/innodb.result 1970-01-01 00:00:00 +0000 +++ b/mysql-test/r/innodb.result 2009-06-09 15:08:46 +0000 @@ -0,0 +1,3310 @@ +drop table if exists t1,t2,t3,t4; +drop database if exists mysqltest; +create table t1 (id int unsigned not null auto_increment, code tinyint unsigned not null, name char(20) not null, primary key (id), key (code), unique (name)) engine=innodb; +insert into t1 (code, name) values (1, 'Tim'), (1, 'Monty'), (2, 'David'), (2, 'Erik'), (3, 'Sasha'), (3, 'Jeremy'), (4, 'Matt'); +select id, code, name from t1 order by id; +id code name +1 1 Tim +2 1 Monty +3 2 David +4 2 Erik +5 3 Sasha +6 3 Jeremy +7 4 Matt +update ignore t1 set id = 8, name = 'Sinisa' where id < 3; +select id, code, name from t1 order by id; +id code name +2 1 Monty +3 2 David +4 2 Erik +5 3 Sasha +6 3 Jeremy +7 4 Matt +8 1 Sinisa +update ignore t1 set id = id + 10, name = 'Ralph' where id < 4; +select id, code, name from t1 order by id; +id code name +3 2 David +4 2 Erik +5 3 Sasha +6 3 Jeremy +7 4 Matt +8 1 Sinisa +12 1 Ralph +drop table t1; +CREATE TABLE t1 ( +id int(11) NOT NULL auto_increment, +parent_id int(11) DEFAULT '0' NOT NULL, +level tinyint(4) DEFAULT '0' NOT NULL, +PRIMARY KEY (id), +KEY parent_id (parent_id), +KEY level (level) +) engine=innodb; +INSERT INTO t1 VALUES (1,0,0),(3,1,1),(4,1,1),(8,2,2),(9,2,2),(17,3,2),(22,4,2),(24,4,2),(28,5,2),(29,5,2),(30,5,2),(31,6,2),(32,6,2),(33,6,2),(203,7,2),(202,7,2),(20,3,2),(157,0,0),(193,5,2),(40,7,2),(2,1,1),(15,2,2),(6,1,1),(34,6,2),(35,6,2),(16,3,2),(7,1,1),(36,7,2),(18,3,2),(26,5,2),(27,5,2),(183,4,2),(38,7,2),(25,5,2),(37,7,2),(21,4,2),(19,3,2),(5,1,1),(179,5,2); +update t1 set parent_id=parent_id+100; +select * from t1 where parent_id=102; +id parent_id level +8 102 2 +9 102 2 +15 102 2 +update t1 set id=id+1000; +update t1 set id=1024 where id=1009; +Got one of the listed errors +select * from t1; +id parent_id level +1001 100 0 +1002 101 1 +1003 101 1 +1004 101 1 +1005 101 1 +1006 101 1 +1007 101 1 +1008 102 2 +1009 102 2 +1015 102 2 +1016 103 2 +1017 103 2 +1018 103 2 +1019 103 2 +1020 103 2 +1021 104 2 +1022 104 2 +1024 104 2 +1025 105 2 +1026 105 2 +1027 105 2 +1028 105 2 +1029 105 2 +1030 105 2 +1031 106 2 +1032 106 2 +1033 106 2 +1034 106 2 +1035 106 2 +1036 107 2 +1037 107 2 +1038 107 2 +1040 107 2 +1157 100 0 +1179 105 2 +1183 104 2 +1193 105 2 +1202 107 2 +1203 107 2 +update ignore t1 set id=id+1; +select * from t1; +id parent_id level +1001 100 0 +1002 101 1 +1003 101 1 +1004 101 1 +1005 101 1 +1006 101 1 +1007 101 1 +1008 102 2 +1010 102 2 +1015 102 2 +1016 103 2 +1017 103 2 +1018 103 2 +1019 103 2 +1020 103 2 +1021 104 2 +1023 104 2 +1024 104 2 +1025 105 2 +1026 105 2 +1027 105 2 +1028 105 2 +1029 105 2 +1030 105 2 +1031 106 2 +1032 106 2 +1033 106 2 +1034 106 2 +1035 106 2 +1036 107 2 +1037 107 2 +1039 107 2 +1041 107 2 +1158 100 0 +1180 105 2 +1184 104 2 +1194 105 2 +1202 107 2 +1204 107 2 +update ignore t1 set id=1023 where id=1010; +select * from t1 where parent_id=102; +id parent_id level +1008 102 2 +1010 102 2 +1015 102 2 +explain select level from t1 where level=1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ref level level 1 const # Using index +explain select level,id from t1 where level=1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ref level level 1 const # Using index +explain select level,id,parent_id from t1 where level=1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ref level level 1 const # +select level,id from t1 where level=1; +level id +1 1002 +1 1003 +1 1004 +1 1005 +1 1006 +1 1007 +select level,id,parent_id from t1 where level=1; +level id parent_id +1 1002 101 +1 1003 101 +1 1004 101 +1 1005 101 +1 1006 101 +1 1007 101 +optimize table t1; +Table Op Msg_type Msg_text +test.t1 optimize note Table does not support optimize, doing recreate + analyze instead +test.t1 optimize status OK +show keys from t1; +Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment +t1 0 PRIMARY 1 id A # NULL NULL BTREE +t1 1 parent_id 1 parent_id A # NULL NULL BTREE +t1 1 level 1 level A # NULL NULL BTREE +drop table t1; +CREATE TABLE t1 ( +gesuchnr int(11) DEFAULT '0' NOT NULL, +benutzer_id int(11) DEFAULT '0' NOT NULL, +PRIMARY KEY (gesuchnr,benutzer_id) +) engine=innodb; +replace into t1 (gesuchnr,benutzer_id) values (2,1); +replace into t1 (gesuchnr,benutzer_id) values (1,1); +replace into t1 (gesuchnr,benutzer_id) values (1,1); +select * from t1; +gesuchnr benutzer_id +1 1 +2 1 +drop table t1; +create table t1 (a int) engine=innodb; +insert into t1 values (1), (2); +optimize table t1; +Table Op Msg_type Msg_text +test.t1 optimize note Table does not support optimize, doing recreate + analyze instead +test.t1 optimize status OK +delete from t1 where a = 1; +select * from t1; +a +2 +check table t1; +Table Op Msg_type Msg_text +test.t1 check status OK +drop table t1; +create table t1 (a int,b varchar(20)) engine=innodb; +insert into t1 values (1,""), (2,"testing"); +delete from t1 where a = 1; +select * from t1; +a b +2 testing +create index skr on t1 (a); +insert into t1 values (3,""), (4,"testing"); +analyze table t1; +Table Op Msg_type Msg_text +test.t1 analyze status OK +show keys from t1; +Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment +t1 1 skr 1 a A # NULL NULL YES BTREE +drop table t1; +create table t1 (a int,b varchar(20),key(a)) engine=innodb; +insert into t1 values (1,""), (2,"testing"); +select * from t1 where a = 1; +a b +1 +drop table t1; +create table t1 (n int not null primary key) engine=innodb; +set autocommit=0; +insert into t1 values (4); +rollback; +select n, "after rollback" from t1; +n after rollback +insert into t1 values (4); +commit; +select n, "after commit" from t1; +n after commit +4 after commit +commit; +insert into t1 values (5); +insert into t1 values (4); +ERROR 23000: Duplicate entry '4' for key 'PRIMARY' +commit; +select n, "after commit" from t1; +n after commit +4 after commit +5 after commit +set autocommit=1; +insert into t1 values (6); +insert into t1 values (4); +ERROR 23000: Duplicate entry '4' for key 'PRIMARY' +select n from t1; +n +4 +5 +6 +set autocommit=0; +begin; +savepoint `my_savepoint`; +insert into t1 values (7); +savepoint `savept2`; +insert into t1 values (3); +select n from t1; +n +3 +4 +5 +6 +7 +savepoint savept3; +rollback to savepoint savept2; +rollback to savepoint savept3; +ERROR 42000: SAVEPOINT savept3 does not exist +rollback to savepoint savept2; +release savepoint `my_savepoint`; +select n from t1; +n +4 +5 +6 +7 +rollback to savepoint `my_savepoint`; +ERROR 42000: SAVEPOINT my_savepoint does not exist +rollback to savepoint savept2; +ERROR 42000: SAVEPOINT savept2 does not exist +insert into t1 values (8); +savepoint sv; +commit; +savepoint sv; +set autocommit=1; +rollback; +drop table t1; +create table t1 (n int not null primary key) engine=innodb; +start transaction; +insert into t1 values (4); +flush tables with read lock; +commit; +unlock tables; +commit; +select * from t1; +n +4 +drop table t1; +create table t1 ( id int NOT NULL PRIMARY KEY, nom varchar(64)) engine=innodb; +begin; +insert into t1 values(1,'hamdouni'); +select id as afterbegin_id,nom as afterbegin_nom from t1; +afterbegin_id afterbegin_nom +1 hamdouni +rollback; +select id as afterrollback_id,nom as afterrollback_nom from t1; +afterrollback_id afterrollback_nom +set autocommit=0; +insert into t1 values(2,'mysql'); +select id as afterautocommit0_id,nom as afterautocommit0_nom from t1; +afterautocommit0_id afterautocommit0_nom +2 mysql +rollback; +select id as afterrollback_id,nom as afterrollback_nom from t1; +afterrollback_id afterrollback_nom +set autocommit=1; +drop table t1; +CREATE TABLE t1 (id char(8) not null primary key, val int not null) engine=innodb; +insert into t1 values ('pippo', 12); +insert into t1 values ('pippo', 12); +ERROR 23000: Duplicate entry 'pippo' for key 'PRIMARY' +delete from t1; +delete from t1 where id = 'pippo'; +select * from t1; +id val +insert into t1 values ('pippo', 12); +set autocommit=0; +delete from t1; +rollback; +select * from t1; +id val +pippo 12 +delete from t1; +commit; +select * from t1; +id val +drop table t1; +create table t1 (a integer) engine=innodb; +start transaction; +rename table t1 to t2; +create table t1 (b integer) engine=innodb; +insert into t1 values (1); +rollback; +drop table t1; +rename table t2 to t1; +drop table t1; +set autocommit=1; +CREATE TABLE t1 (ID INTEGER NOT NULL PRIMARY KEY, NAME VARCHAR(64)) ENGINE=innodb; +INSERT INTO t1 VALUES (1, 'Jochen'); +select * from t1; +ID NAME +1 Jochen +drop table t1; +CREATE TABLE t1 ( _userid VARCHAR(60) NOT NULL PRIMARY KEY) ENGINE=innodb; +set autocommit=0; +INSERT INTO t1 SET _userid='marc(a)anyware.co.uk'; +COMMIT; +SELECT * FROM t1; +_userid +marc(a)anyware.co.uk +SELECT _userid FROM t1 WHERE _userid='marc(a)anyware.co.uk'; +_userid +marc(a)anyware.co.uk +drop table t1; +set autocommit=1; +CREATE TABLE t1 ( +user_id int(10) DEFAULT '0' NOT NULL, +name varchar(100), +phone varchar(100), +ref_email varchar(100) DEFAULT '' NOT NULL, +detail varchar(200), +PRIMARY KEY (user_id,ref_email) +)engine=innodb; +INSERT INTO t1 VALUES (10292,'sanjeev','29153373','sansh777(a)hotmail.com','xxx'),(10292,'shirish','2333604','shirish(a)yahoo.com','ddsds'),(10292,'sonali','323232','sonali(a)bolly.com','filmstar'); +select * from t1 where user_id=10292; +user_id name phone ref_email detail +10292 sanjeev 29153373 sansh777(a)hotmail.com xxx +10292 shirish 2333604 shirish(a)yahoo.com ddsds +10292 sonali 323232 sonali(a)bolly.com filmstar +INSERT INTO t1 VALUES (10291,'sanjeev','29153373','sansh777(a)hotmail.com','xxx'),(10293,'shirish','2333604','shirish(a)yahoo.com','ddsds'); +select * from t1 where user_id=10292; +user_id name phone ref_email detail +10292 sanjeev 29153373 sansh777(a)hotmail.com xxx +10292 shirish 2333604 shirish(a)yahoo.com ddsds +10292 sonali 323232 sonali(a)bolly.com filmstar +select * from t1 where user_id>=10292; +user_id name phone ref_email detail +10292 sanjeev 29153373 sansh777(a)hotmail.com xxx +10292 shirish 2333604 shirish(a)yahoo.com ddsds +10292 sonali 323232 sonali(a)bolly.com filmstar +10293 shirish 2333604 shirish(a)yahoo.com ddsds +select * from t1 where user_id>10292; +user_id name phone ref_email detail +10293 shirish 2333604 shirish(a)yahoo.com ddsds +select * from t1 where user_id<10292; +user_id name phone ref_email detail +10291 sanjeev 29153373 sansh777(a)hotmail.com xxx +drop table t1; +CREATE TABLE t1 (a int not null, b int not null,c int not null, +key(a),primary key(a,b), unique(c),key(a),unique(b)); +show index from t1; +Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment +t1 0 PRIMARY 1 a A # NULL NULL BTREE +t1 0 PRIMARY 2 b A # NULL NULL BTREE +t1 0 c 1 c A # NULL NULL BTREE +t1 0 b 1 b A # NULL NULL BTREE +t1 1 a 1 a A # NULL NULL BTREE +t1 1 a_2 1 a A # NULL NULL BTREE +drop table t1; +create table t1 (col1 int not null, col2 char(4) not null, primary key(col1)); +alter table t1 engine=innodb; +insert into t1 values ('1','1'),('5','2'),('2','3'),('3','4'),('4','4'); +select * from t1; +col1 col2 +1 1 +2 3 +3 4 +4 4 +5 2 +update t1 set col2='7' where col1='4'; +select * from t1; +col1 col2 +1 1 +2 3 +3 4 +4 7 +5 2 +alter table t1 add co3 int not null; +select * from t1; +col1 col2 co3 +1 1 0 +2 3 0 +3 4 0 +4 7 0 +5 2 0 +update t1 set col2='9' where col1='2'; +select * from t1; +col1 col2 co3 +1 1 0 +2 9 0 +3 4 0 +4 7 0 +5 2 0 +drop table t1; +create table t1 (a int not null , b int, primary key (a)) engine = innodb; +create table t2 (a int not null , b int, primary key (a)) engine = myisam; +insert into t1 VALUES (1,3) , (2,3), (3,3); +select * from t1; +a b +1 3 +2 3 +3 3 +insert into t2 select * from t1; +select * from t2; +a b +1 3 +2 3 +3 3 +delete from t1 where b = 3; +select * from t1; +a b +insert into t1 select * from t2; +select * from t1; +a b +1 3 +2 3 +3 3 +select * from t2; +a b +1 3 +2 3 +3 3 +drop table t1,t2; +CREATE TABLE t1 ( +user_name varchar(12), +password text, +subscribed char(1), +user_id int(11) DEFAULT '0' NOT NULL, +quota bigint(20), +weight double, +access_date date, +access_time time, +approved datetime, +dummy_primary_key int(11) NOT NULL auto_increment, +PRIMARY KEY (dummy_primary_key) +) ENGINE=innodb; +INSERT INTO t1 VALUES ('user_0','somepassword','N',0,0,0,'2000-09-07','23:06:59','2000-09-07 23:06:59',1); +INSERT INTO t1 VALUES ('user_1','somepassword','Y',1,1,1,'2000-09-07','23:06:59','2000-09-07 23:06:59',2); +INSERT INTO t1 VALUES ('user_2','somepassword','N',2,2,1.4142135623731,'2000-09-07','23:06:59','2000-09-07 23:06:59',3); +INSERT INTO t1 VALUES ('user_3','somepassword','Y',3,3,1.7320508075689,'2000-09-07','23:06:59','2000-09-07 23:06:59',4); +INSERT INTO t1 VALUES ('user_4','somepassword','N',4,4,2,'2000-09-07','23:06:59','2000-09-07 23:06:59',5); +select user_name, password , subscribed, user_id, quota, weight, access_date, access_time, approved, dummy_primary_key from t1 order by user_name; +user_name password subscribed user_id quota weight access_date access_time approved dummy_primary_key +user_0 somepassword N 0 0 0 2000-09-07 23:06:59 2000-09-07 23:06:59 1 +user_1 somepassword Y 1 1 1 2000-09-07 23:06:59 2000-09-07 23:06:59 2 +user_2 somepassword N 2 2 1.4142135623731 2000-09-07 23:06:59 2000-09-07 23:06:59 3 +user_3 somepassword Y 3 3 1.7320508075689 2000-09-07 23:06:59 2000-09-07 23:06:59 4 +user_4 somepassword N 4 4 2 2000-09-07 23:06:59 2000-09-07 23:06:59 5 +drop table t1; +CREATE TABLE t1 ( +id int(11) NOT NULL auto_increment, +parent_id int(11) DEFAULT '0' NOT NULL, +level tinyint(4) DEFAULT '0' NOT NULL, +KEY (id), +KEY parent_id (parent_id), +KEY level (level) +) engine=innodb; +INSERT INTO t1 VALUES (1,0,0),(3,1,1),(4,1,1),(8,2,2),(9,2,2),(17,3,2),(22,4,2),(24,4,2),(28,5,2),(29,5,2),(30,5,2),(31,6,2),(32,6,2),(33,6,2),(203,7,2),(202,7,2),(20,3,2),(157,0,0),(193,5,2),(40,7,2),(2,1,1),(15,2,2),(6,1,1),(34,6,2),(35,6,2),(16,3,2),(7,1,1),(36,7,2),(18,3,2),(26,5,2),(27,5,2),(183,4,2),(38,7,2),(25,5,2),(37,7,2),(21,4,2),(19,3,2),(5,1,1); +INSERT INTO t1 values (179,5,2); +update t1 set parent_id=parent_id+100; +select * from t1 where parent_id=102; +id parent_id level +8 102 2 +9 102 2 +15 102 2 +update t1 set id=id+1000; +update t1 set id=1024 where id=1009; +select * from t1; +id parent_id level +1001 100 0 +1003 101 1 +1004 101 1 +1008 102 2 +1024 102 2 +1017 103 2 +1022 104 2 +1024 104 2 +1028 105 2 +1029 105 2 +1030 105 2 +1031 106 2 +1032 106 2 +1033 106 2 +1203 107 2 +1202 107 2 +1020 103 2 +1157 100 0 +1193 105 2 +1040 107 2 +1002 101 1 +1015 102 2 +1006 101 1 +1034 106 2 +1035 106 2 +1016 103 2 +1007 101 1 +1036 107 2 +1018 103 2 +1026 105 2 +1027 105 2 +1183 104 2 +1038 107 2 +1025 105 2 +1037 107 2 +1021 104 2 +1019 103 2 +1005 101 1 +1179 105 2 +update ignore t1 set id=id+1; +select * from t1; +id parent_id level +1002 100 0 +1004 101 1 +1005 101 1 +1009 102 2 +1025 102 2 +1018 103 2 +1023 104 2 +1025 104 2 +1029 105 2 +1030 105 2 +1031 105 2 +1032 106 2 +1033 106 2 +1034 106 2 +1204 107 2 +1203 107 2 +1021 103 2 +1158 100 0 +1194 105 2 +1041 107 2 +1003 101 1 +1016 102 2 +1007 101 1 +1035 106 2 +1036 106 2 +1017 103 2 +1008 101 1 +1037 107 2 +1019 103 2 +1027 105 2 +1028 105 2 +1184 104 2 +1039 107 2 +1026 105 2 +1038 107 2 +1022 104 2 +1020 103 2 +1006 101 1 +1180 105 2 +update ignore t1 set id=1023 where id=1010; +select * from t1 where parent_id=102; +id parent_id level +1009 102 2 +1025 102 2 +1016 102 2 +explain select level from t1 where level=1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ref level level 1 const # Using index +select level,id from t1 where level=1; +level id +1 1004 +1 1005 +1 1003 +1 1007 +1 1008 +1 1006 +select level,id,parent_id from t1 where level=1; +level id parent_id +1 1004 101 +1 1005 101 +1 1003 101 +1 1007 101 +1 1008 101 +1 1006 101 +select level,id from t1 where level=1 order by id; +level id +1 1003 +1 1004 +1 1005 +1 1006 +1 1007 +1 1008 +delete from t1 where level=1; +select * from t1; +id parent_id level +1002 100 0 +1009 102 2 +1025 102 2 +1018 103 2 +1023 104 2 +1025 104 2 +1029 105 2 +1030 105 2 +1031 105 2 +1032 106 2 +1033 106 2 +1034 106 2 +1204 107 2 +1203 107 2 +1021 103 2 +1158 100 0 +1194 105 2 +1041 107 2 +1016 102 2 +1035 106 2 +1036 106 2 +1017 103 2 +1037 107 2 +1019 103 2 +1027 105 2 +1028 105 2 +1184 104 2 +1039 107 2 +1026 105 2 +1038 107 2 +1022 104 2 +1020 103 2 +1180 105 2 +drop table t1; +CREATE TABLE t1 ( +sca_code char(6) NOT NULL, +cat_code char(6) NOT NULL, +sca_desc varchar(50), +lan_code char(2) NOT NULL, +sca_pic varchar(100), +sca_sdesc varchar(50), +sca_sch_desc varchar(16), +PRIMARY KEY (sca_code, cat_code, lan_code), +INDEX sca_pic (sca_pic) +) engine = innodb ; +INSERT INTO t1 ( sca_code, cat_code, sca_desc, lan_code, sca_pic, sca_sdesc, sca_sch_desc) VALUES ( 'PD', 'J', 'PENDANT', 'EN', NULL, NULL, 'PENDANT'),( 'RI', 'J', 'RING', 'EN', NULL, NULL, 'RING'),( 'QQ', 'N', 'RING', 'EN', 'not null', NULL, 'RING'); +select count(*) from t1 where sca_code = 'PD'; +count(*) +1 +select count(*) from t1 where sca_code <= 'PD'; +count(*) +1 +select count(*) from t1 where sca_pic is null; +count(*) +2 +alter table t1 drop index sca_pic, add index sca_pic (cat_code, sca_pic); +select count(*) from t1 where sca_code='PD' and sca_pic is null; +count(*) +1 +select count(*) from t1 where cat_code='E'; +count(*) +0 +alter table t1 drop index sca_pic, add index (sca_pic, cat_code); +select count(*) from t1 where sca_code='PD' and sca_pic is null; +count(*) +1 +select count(*) from t1 where sca_pic >= 'n'; +count(*) +1 +select sca_pic from t1 where sca_pic is null; +sca_pic +NULL +NULL +update t1 set sca_pic="test" where sca_pic is null; +delete from t1 where sca_code='pd'; +drop table t1; +set @a:=now(); +CREATE TABLE t1 (a int not null, b timestamp not null, primary key (a)) engine=innodb; +insert into t1 (a) values(1),(2),(3); +select t1.a from t1 natural join t1 as t2 where t1.b >= @a order by t1.a; +a +1 +2 +3 +select a from t1 natural join t1 as t2 where b >= @a order by a; +a +1 +2 +3 +update t1 set a=5 where a=1; +select a from t1; +a +2 +3 +5 +drop table t1; +create table t1 (a varchar(100) not null, primary key(a), b int not null) engine=innodb; +insert into t1 values("hello",1),("world",2); +select * from t1 order by b desc; +a b +world 2 +hello 1 +optimize table t1; +Table Op Msg_type Msg_text +test.t1 optimize note Table does not support optimize, doing recreate + analyze instead +test.t1 optimize status OK +show keys from t1; +Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment +t1 0 PRIMARY 1 a A # NULL NULL BTREE +drop table t1; +create table t1 (i int, j int ) ENGINE=innodb; +insert into t1 values (1,2); +select * from t1 where i=1 and j=2; +i j +1 2 +create index ax1 on t1 (i,j); +select * from t1 where i=1 and j=2; +i j +1 2 +drop table t1; +CREATE TABLE t1 ( +a int3 unsigned NOT NULL, +b int1 unsigned NOT NULL, +UNIQUE (a, b) +) ENGINE = innodb; +INSERT INTO t1 VALUES (1, 1); +SELECT MIN(B),MAX(b) FROM t1 WHERE t1.a = 1; +MIN(B) MAX(b) +1 1 +drop table t1; +CREATE TABLE t1 (a int unsigned NOT NULL) engine=innodb; +INSERT INTO t1 VALUES (1); +SELECT * FROM t1; +a +1 +DROP TABLE t1; +create table t1 (a int primary key,b int, c int, d int, e int, f int, g int, h int, i int, j int, k int, l int, m int, n int, o int, p int, q int, r int, s int, t int, u int, v int, w int, x int, y int, z int, a1 int, a2 int, a3 int, a4 int, a5 int, a6 int, a7 int, a8 int, a9 int, b1 int, b2 int, b3 int, b4 int, b5 int, b6 int) engine = innodb; +insert into t1 values (1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1); +explain select * from t1 where a > 0 and a < 50; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL # Using where +drop table t1; +create table t1 (id int NOT NULL,id2 int NOT NULL,id3 int NOT NULL,dummy1 char(30),primary key (id,id2),index index_id3 (id3)) engine=innodb; +insert into t1 values (0,0,0,'ABCDEFGHIJ'),(2,2,2,'BCDEFGHIJK'),(1,1,1,'CDEFGHIJKL'); +LOCK TABLES t1 WRITE; +insert into t1 values (99,1,2,'D'),(1,1,2,'D'); +ERROR 23000: Duplicate entry '1-1' for key 'PRIMARY' +select id from t1; +id +0 +1 +2 +select id from t1; +id +0 +1 +2 +UNLOCK TABLES; +DROP TABLE t1; +create table t1 (id int NOT NULL,id2 int NOT NULL,id3 int NOT NULL,dummy1 char(30),primary key (id,id2),index index_id3 (id3)) engine=innodb; +insert into t1 values (0,0,0,'ABCDEFGHIJ'),(2,2,2,'BCDEFGHIJK'),(1,1,1,'CDEFGHIJKL'); +LOCK TABLES t1 WRITE; +begin; +insert into t1 values (99,1,2,'D'),(1,1,2,'D'); +ERROR 23000: Duplicate entry '1-1' for key 'PRIMARY' +select id from t1; +id +0 +1 +2 +insert ignore into t1 values (100,1,2,'D'),(1,1,99,'D'); +commit; +select id,id3 from t1; +id id3 +0 0 +1 1 +2 2 +100 2 +UNLOCK TABLES; +DROP TABLE t1; +create table t1 (a char(20), unique (a(5))) engine=innodb; +drop table t1; +create table t1 (a char(20), index (a(5))) engine=innodb; +show create table t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` char(20) DEFAULT NULL, + KEY `a` (`a`(5)) +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +drop table t1; +create temporary table t1 (a int not null auto_increment, primary key(a)) engine=innodb; +insert into t1 values (NULL),(NULL),(NULL); +delete from t1 where a=3; +insert into t1 values (NULL); +select * from t1; +a +1 +2 +4 +alter table t1 add b int; +select * from t1; +a b +1 NULL +2 NULL +4 NULL +drop table t1; +create table t1 +( +id int auto_increment primary key, +name varchar(32) not null, +value text not null, +uid int not null, +unique key(name,uid) +) engine=innodb; +insert into t1 values (1,'one','one value',101), +(2,'two','two value',102),(3,'three','three value',103); +set insert_id=5; +replace into t1 (value,name,uid) values ('other value','two',102); +delete from t1 where uid=102; +set insert_id=5; +replace into t1 (value,name,uid) values ('other value','two',102); +set insert_id=6; +replace into t1 (value,name,uid) values ('other value','two',102); +select * from t1; +id name value uid +1 one one value 101 +3 three three value 103 +6 two other value 102 +drop table t1; +create database mysqltest; +create table mysqltest.t1 (a int not null) engine= innodb; +insert into mysqltest.t1 values(1); +create table mysqltest.t2 (a int not null) engine= myisam; +insert into mysqltest.t2 values(1); +create table mysqltest.t3 (a int not null) engine= heap; +insert into mysqltest.t3 values(1); +commit; +drop database mysqltest; +show tables from mysqltest; +ERROR 42000: Unknown database 'mysqltest' +set autocommit=0; +create table t1 (a int not null) engine= innodb; +insert into t1 values(1),(2); +truncate table t1; +commit; +truncate table t1; +truncate table t1; +select * from t1; +a +insert into t1 values(1),(2); +delete from t1; +select * from t1; +a +commit; +drop table t1; +set autocommit=1; +create table t1 (a int not null) engine= innodb; +insert into t1 values(1),(2); +truncate table t1; +insert into t1 values(1),(2); +select * from t1; +a +1 +2 +truncate table t1; +insert into t1 values(1),(2); +delete from t1; +select * from t1; +a +drop table t1; +create table t1 (a int not null, b int not null, c int not null, primary key (a),key(b)) engine=innodb; +insert into t1 values (3,3,3),(1,1,1),(2,2,2),(4,4,4); +explain select * from t1 order by a; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index NULL PRIMARY 4 NULL # +explain select * from t1 order by b; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL # Using filesort +explain select * from t1 order by c; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL # Using filesort +explain select a from t1 order by a; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index NULL PRIMARY 4 NULL # Using index +explain select b from t1 order by b; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index NULL b 4 NULL # Using index +explain select a,b from t1 order by b; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index NULL b 4 NULL # Using index +explain select a,b from t1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index NULL b 4 NULL # Using index +explain select a,b,c from t1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL # +drop table t1; +create table t1 (t int not null default 1, key (t)) engine=innodb; +desc t1; +Field Type Null Key Default Extra +t int(11) NO MUL 1 +drop table t1; +CREATE TABLE t1 ( +number bigint(20) NOT NULL default '0', +cname char(15) NOT NULL default '', +carrier_id smallint(6) NOT NULL default '0', +privacy tinyint(4) NOT NULL default '0', +last_mod_date timestamp NOT NULL, +last_mod_id smallint(6) NOT NULL default '0', +last_app_date timestamp NOT NULL, +last_app_id smallint(6) default '-1', +version smallint(6) NOT NULL default '0', +assigned_scps int(11) default '0', +status tinyint(4) default '0' +) ENGINE=InnoDB; +INSERT INTO t1 VALUES (4077711111,'SeanWheeler',90,2,20020111112846,500,00000000000000,-1,2,3,1); +INSERT INTO t1 VALUES (9197722223,'berry',90,3,20020111112809,500,20020102114532,501,4,10,0); +INSERT INTO t1 VALUES (650,'San Francisco',0,0,20011227111336,342,00000000000000,-1,1,24,1); +INSERT INTO t1 VALUES (302467,'Sue\'s Subshop',90,3,20020109113241,500,20020102115111,501,7,24,0); +INSERT INTO t1 VALUES (6014911113,'SudzCarwash',520,1,20020102115234,500,20020102115259,501,33,32768,0); +INSERT INTO t1 VALUES (333,'tubs',99,2,20020109113440,501,20020109113440,500,3,10,0); +CREATE TABLE t2 ( +number bigint(20) NOT NULL default '0', +cname char(15) NOT NULL default '', +carrier_id smallint(6) NOT NULL default '0', +privacy tinyint(4) NOT NULL default '0', +last_mod_date timestamp NOT NULL, +last_mod_id smallint(6) NOT NULL default '0', +last_app_date timestamp NOT NULL, +last_app_id smallint(6) default '-1', +version smallint(6) NOT NULL default '0', +assigned_scps int(11) default '0', +status tinyint(4) default '0' +) ENGINE=InnoDB; +INSERT INTO t2 VALUES (4077711111,'SeanWheeler',0,2,20020111112853,500,00000000000000,-1,2,3,1); +INSERT INTO t2 VALUES (9197722223,'berry',90,3,20020111112818,500,20020102114532,501,4,10,0); +INSERT INTO t2 VALUES (650,'San Francisco',90,0,20020109113158,342,00000000000000,-1,1,24,1); +INSERT INTO t2 VALUES (333,'tubs',99,2,20020109113453,501,20020109113453,500,3,10,0); +select * from t1; +number cname carrier_id privacy last_mod_date last_mod_id last_app_date last_app_id version assigned_scps status +4077711111 SeanWheeler 90 2 2002-01-11 11:28:46 500 0000-00-00 00:00:00 -1 2 3 1 +9197722223 berry 90 3 2002-01-11 11:28:09 500 2002-01-02 11:45:32 501 4 10 0 +650 San Francisco 0 0 2001-12-27 11:13:36 342 0000-00-00 00:00:00 -1 1 24 1 +302467 Sue's Subshop 90 3 2002-01-09 11:32:41 500 2002-01-02 11:51:11 501 7 24 0 +6014911113 SudzCarwash 520 1 2002-01-02 11:52:34 500 2002-01-02 11:52:59 501 33 32768 0 +333 tubs 99 2 2002-01-09 11:34:40 501 2002-01-09 11:34:40 500 3 10 0 +select * from t2; +number cname carrier_id privacy last_mod_date last_mod_id last_app_date last_app_id version assigned_scps status +4077711111 SeanWheeler 0 2 2002-01-11 11:28:53 500 0000-00-00 00:00:00 -1 2 3 1 +9197722223 berry 90 3 2002-01-11 11:28:18 500 2002-01-02 11:45:32 501 4 10 0 +650 San Francisco 90 0 2002-01-09 11:31:58 342 0000-00-00 00:00:00 -1 1 24 1 +333 tubs 99 2 2002-01-09 11:34:53 501 2002-01-09 11:34:53 500 3 10 0 +delete t1, t2 from t1 left join t2 on t1.number=t2.number where (t1.carrier_id=90 and t1.number=t2.number) or (t2.carrier_id=90 and t1.number=t2.number) or (t1.carrier_id=90 and t2.number is null); +select * from t1; +number cname carrier_id privacy last_mod_date last_mod_id last_app_date last_app_id version assigned_scps status +6014911113 SudzCarwash 520 1 2002-01-02 11:52:34 500 2002-01-02 11:52:59 501 33 32768 0 +333 tubs 99 2 2002-01-09 11:34:40 501 2002-01-09 11:34:40 500 3 10 0 +select * from t2; +number cname carrier_id privacy last_mod_date last_mod_id last_app_date last_app_id version assigned_scps status +333 tubs 99 2 2002-01-09 11:34:53 501 2002-01-09 11:34:53 500 3 10 0 +select * from t2; +number cname carrier_id privacy last_mod_date last_mod_id last_app_date last_app_id version assigned_scps status +333 tubs 99 2 2002-01-09 11:34:53 501 2002-01-09 11:34:53 500 3 10 0 +drop table t1,t2; +create table t1 (id int unsigned not null auto_increment, code tinyint unsigned not null, name char(20) not null, primary key (id), key (code), unique (name)) engine=innodb; +BEGIN; +SET SESSION TRANSACTION ISOLATION LEVEL SERIALIZABLE; +SELECT @@tx_isolation,@@global.tx_isolation; +@@tx_isolation @@global.tx_isolation +SERIALIZABLE REPEATABLE-READ +insert into t1 (code, name) values (1, 'Tim'), (1, 'Monty'), (2, 'David'); +select id, code, name from t1 order by id; +id code name +1 1 Tim +2 1 Monty +3 2 David +COMMIT; +BEGIN; +SET SESSION TRANSACTION ISOLATION LEVEL REPEATABLE READ; +insert into t1 (code, name) values (2, 'Erik'), (3, 'Sasha'); +select id, code, name from t1 order by id; +id code name +1 1 Tim +2 1 Monty +3 2 David +4 2 Erik +5 3 Sasha +COMMIT; +SET binlog_format='MIXED'; +BEGIN; +SET SESSION TRANSACTION ISOLATION LEVEL READ UNCOMMITTED; +insert into t1 (code, name) values (3, 'Jeremy'), (4, 'Matt'); +select id, code, name from t1 order by id; +id code name +1 1 Tim +2 1 Monty +3 2 David +4 2 Erik +5 3 Sasha +6 3 Jeremy +7 4 Matt +COMMIT; +DROP TABLE t1; +create table t1 (n int(10), d int(10)) engine=innodb; +create table t2 (n int(10), d int(10)) engine=innodb; +insert into t1 values(1,1),(1,2); +insert into t2 values(1,10),(2,20); +UPDATE t1,t2 SET t1.d=t2.d,t2.d=30 WHERE t1.n=t2.n; +select * from t1; +n d +1 10 +1 10 +select * from t2; +n d +1 30 +2 20 +drop table t1,t2; +drop table if exists t1, t2; +CREATE TABLE t1 (a int, PRIMARY KEY (a)); +CREATE TABLE t2 (a int, PRIMARY KEY (a)) ENGINE=InnoDB; +create trigger trg_del_t2 after delete on t2 for each row +insert into t1 values (1); +insert into t1 values (1); +insert into t2 values (1),(2); +delete t2 from t2; +ERROR 23000: Duplicate entry '1' for key 'PRIMARY' +select count(*) from t2 /* must be 2 as restored after rollback caused by the error */; +count(*) +2 +drop table t1, t2; +drop table if exists t1, t2; +CREATE TABLE t1 (a int, PRIMARY KEY (a)); +CREATE TABLE t2 (a int, PRIMARY KEY (a)) ENGINE=InnoDB; +create trigger trg_del_t2 after delete on t2 for each row +insert into t1 values (1); +insert into t1 values (1); +insert into t2 values (1),(2); +delete t2 from t2; +ERROR 23000: Duplicate entry '1' for key 'PRIMARY' +select count(*) from t2 /* must be 2 as restored after rollback caused by the error */; +count(*) +2 +drop table t1, t2; +create table t1 (a int, b int) engine=innodb; +insert into t1 values(20,null); +select t2.b, ifnull(t2.b,"this is null") from t1 as t2 left join t1 as t3 on +t2.b=t3.a; +b ifnull(t2.b,"this is null") +NULL this is null +select t2.b, ifnull(t2.b,"this is null") from t1 as t2 left join t1 as t3 on +t2.b=t3.a order by 1; +b ifnull(t2.b,"this is null") +NULL this is null +insert into t1 values(10,null); +select t2.b, ifnull(t2.b,"this is null") from t1 as t2 left join t1 as t3 on +t2.b=t3.a order by 1; +b ifnull(t2.b,"this is null") +NULL this is null +NULL this is null +drop table t1; +create table t1 (a varchar(10) not null) engine=myisam; +create table t2 (b varchar(10) not null unique) engine=innodb; +select t1.a from t1,t2 where t1.a=t2.b; +a +drop table t1,t2; +create table t1 (a int not null, b int, primary key (a)) engine = innodb; +create table t2 (a int not null, b int, primary key (a)) engine = innodb; +insert into t1 values (10, 20); +insert into t2 values (10, 20); +update t1, t2 set t1.b = 150, t2.b = t1.b where t2.a = t1.a and t1.a = 10; +drop table t1,t2; +CREATE TABLE t1 (id INT NOT NULL, PRIMARY KEY (id)) ENGINE=INNODB; +CREATE TABLE t2 (id INT PRIMARY KEY, t1_id INT, INDEX par_ind (t1_id), FOREIGN KEY (t1_id) REFERENCES t1(id) ON DELETE CASCADE ) ENGINE=INNODB; +insert into t1 set id=1; +insert into t2 set id=1, t1_id=1; +delete t1,t2 from t1,t2 where t1.id=t2.t1_id; +select * from t1; +id +select * from t2; +id t1_id +drop table t2,t1; +CREATE TABLE t1(id INT NOT NULL, PRIMARY KEY (id)) ENGINE=INNODB; +CREATE TABLE t2(id INT PRIMARY KEY, t1_id INT, INDEX par_ind (t1_id) ) ENGINE=INNODB; +INSERT INTO t1 VALUES(1); +INSERT INTO t2 VALUES(1, 1); +SELECT * from t1; +id +1 +UPDATE t1,t2 SET t1.id=t1.id+1, t2.t1_id=t1.id+1; +SELECT * from t1; +id +2 +UPDATE t1,t2 SET t1.id=t1.id+1 where t1.id!=t2.id; +SELECT * from t1; +id +3 +DROP TABLE t1,t2; +set autocommit=0; +CREATE TABLE t1 (id CHAR(15) NOT NULL, value CHAR(40) NOT NULL, PRIMARY KEY(id)) ENGINE=InnoDB; +CREATE TABLE t2 (id CHAR(15) NOT NULL, value CHAR(40) NOT NULL, PRIMARY KEY(id)) ENGINE=InnoDB; +CREATE TABLE t3 (id1 CHAR(15) NOT NULL, id2 CHAR(15) NOT NULL, PRIMARY KEY(id1, id2)) ENGINE=InnoDB; +INSERT INTO t3 VALUES("my-test-1", "my-test-2"); +COMMIT; +INSERT INTO t1 VALUES("this-key", "will disappear"); +INSERT INTO t2 VALUES("this-key", "will also disappear"); +DELETE FROM t3 WHERE id1="my-test-1"; +SELECT * FROM t1; +id value +this-key will disappear +SELECT * FROM t2; +id value +this-key will also disappear +SELECT * FROM t3; +id1 id2 +ROLLBACK; +SELECT * FROM t1; +id value +SELECT * FROM t2; +id value +SELECT * FROM t3; +id1 id2 +my-test-1 my-test-2 +SELECT * FROM t3 WHERE id1="my-test-1" LOCK IN SHARE MODE; +id1 id2 +my-test-1 my-test-2 +COMMIT; +set autocommit=1; +DROP TABLE t1,t2,t3; +CREATE TABLE t1 (a int not null primary key, b int not null, unique (b)) engine=innodb; +INSERT INTO t1 values (1,1),(2,2),(3,3),(4,4),(5,5),(6,6),(7,7),(8,8),(9,9); +UPDATE t1 set a=a+100 where b between 2 and 3 and a < 1000; +SELECT * from t1; +a b +1 1 +102 2 +103 3 +4 4 +5 5 +6 6 +7 7 +8 8 +9 9 +drop table t1; +CREATE TABLE t1 (a int not null primary key, b int not null, key (b)) engine=innodb; +CREATE TABLE t2 (a int not null primary key, b int not null, key (b)) engine=innodb; +INSERT INTO t1 values (1,1),(2,2),(3,3),(4,4),(5,5),(6,6),(7,7),(8,8),(9,9),(10,10),(11,11),(12,12); +INSERT INTO t2 values (1,1),(2,2),(3,3),(4,4),(5,5),(6,6),(7,7),(8,8),(9,9); +update t1,t2 set t1.a=t1.a+100; +select * from t1; +a b +101 1 +102 2 +103 3 +104 4 +105 5 +106 6 +107 7 +108 8 +109 9 +110 10 +111 11 +112 12 +update t1,t2 set t1.a=t1.a+100 where t1.a=101; +select * from t1; +a b +201 1 +102 2 +103 3 +104 4 +105 5 +106 6 +107 7 +108 8 +109 9 +110 10 +111 11 +112 12 +update t1,t2 set t1.b=t1.b+10 where t1.b=2; +select * from t1; +a b +201 1 +103 3 +104 4 +105 5 +106 6 +107 7 +108 8 +109 9 +110 10 +111 11 +102 12 +112 12 +update t1,t2 set t1.b=t1.b+2,t2.b=t1.b+10 where t1.b between 3 and 5 and t1.a=t2.a+100; +select * from t1; +a b +201 1 +103 5 +104 6 +106 6 +105 7 +107 7 +108 8 +109 9 +110 10 +111 11 +102 12 +112 12 +select * from t2; +a b +1 1 +2 2 +6 6 +7 7 +8 8 +9 9 +3 13 +4 14 +5 15 +drop table t1,t2; +CREATE TABLE t2 ( NEXT_T BIGINT NOT NULL PRIMARY KEY) ENGINE=MyISAM; +CREATE TABLE t1 ( B_ID INTEGER NOT NULL PRIMARY KEY) ENGINE=InnoDB; +SET AUTOCOMMIT=0; +INSERT INTO t1 ( B_ID ) VALUES ( 1 ); +INSERT INTO t2 ( NEXT_T ) VALUES ( 1 ); +ROLLBACK; +Warnings: +Warning 1196 Some non-transactional changed tables couldn't be rolled back +SELECT * FROM t1; +B_ID +drop table t1,t2; +create table t1 ( pk int primary key, parent int not null, child int not null, index (parent) ) engine = innodb; +insert into t1 values (1,0,4), (2,1,3), (3,2,1), (4,1,2); +select distinct parent,child from t1 order by parent; +parent child +0 4 +1 2 +1 3 +2 1 +drop table t1; +create table t1 (a int not null auto_increment primary key, b int, c int, key(c)) engine=innodb; +create table t2 (a int not null auto_increment primary key, b int); +insert into t1 (b) values (null),(null),(null),(null),(null),(null),(null); +insert into t2 (a) select b from t1; +insert into t1 (b) select b from t2; +insert into t2 (a) select b from t1; +insert into t1 (a) select b from t2; +insert into t2 (a) select b from t1; +insert into t1 (a) select b from t2; +insert into t2 (a) select b from t1; +insert into t1 (a) select b from t2; +insert into t2 (a) select b from t1; +insert into t1 (a) select b from t2; +select count(*) from t1; +count(*) +623 +explain select * from t1 where c between 1 and 2500; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 range c c 5 NULL # Using where +update t1 set c=a; +explain select * from t1 where c between 1 and 2500; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL c NULL NULL NULL # Using where +drop table t1,t2; +create table t1 (id int primary key auto_increment, fk int, index index_fk (fk)) engine=innodb; +insert into t1 (id) values (null),(null),(null),(null),(null); +update t1 set fk=69 where fk is null order by id limit 1; +SELECT * from t1; +id fk +2 NULL +3 NULL +4 NULL +5 NULL +1 69 +drop table t1; +create table t1 (a int not null, b int not null, key (a)); +insert into t1 values (1,1),(1,2),(1,3),(3,1),(3,2),(3,3),(3,1),(3,2),(3,3),(2,1),(2,2),(2,3); +SET @tmp=0; +update t1 set b=(@tmp:=@tmp+1) order by a; +update t1 set b=99 where a=1 order by b asc limit 1; +update t1 set b=100 where a=1 order by b desc limit 2; +update t1 set a=a+10+b where a=1 order by b; +select * from t1 order by a,b; +a b +2 4 +2 5 +2 6 +3 7 +3 8 +3 9 +3 10 +3 11 +3 12 +13 2 +111 100 +111 100 +drop table t1; +create table t1 ( c char(8) not null ) engine=innodb; +insert into t1 values ('0'),('1'),('2'),('3'),('4'),('5'),('6'),('7'),('8'),('9'); +insert into t1 values ('A'),('B'),('C'),('D'),('E'),('F'); +alter table t1 add b char(8) not null; +alter table t1 add a char(8) not null; +alter table t1 add primary key (a,b,c); +update t1 set a=c, b=c; +create table t2 (c char(8) not null, b char(8) not null, a char(8) not null, primary key(a,b,c)) engine=innodb; +insert into t2 select * from t1; +delete t1,t2 from t2,t1 where t1.a<'B' and t2.b=t1.b; +drop table t1,t2; +SET AUTOCOMMIT=1; +create table t1 (a integer auto_increment primary key) engine=innodb; +insert into t1 (a) values (NULL),(NULL); +truncate table t1; +insert into t1 (a) values (NULL),(NULL); +SELECT * from t1; +a +1 +2 +drop table t1; +CREATE TABLE t1 (`id 1` INT NOT NULL, PRIMARY KEY (`id 1`)) ENGINE=INNODB; +CREATE TABLE t2 (id INT PRIMARY KEY, t1_id INT, INDEX par_ind (t1_id), FOREIGN KEY (`t1_id`) REFERENCES `t1`(`id 1`) ON DELETE CASCADE ) ENGINE=INNODB; +drop table t2,t1; +create table `t1` (`id` int( 11 ) not null ,primary key ( `id` )) engine = innodb; +insert into `t1`values ( 1 ) ; +create table `t2` (`id` int( 11 ) not null default '0',unique key `id` ( `id` ) ,constraint `t1_id_fk` foreign key ( `id` ) references `t1` (`id` )) engine = innodb; +insert into `t2`values ( 1 ) ; +create table `t3` (`id` int( 11 ) not null default '0',key `id` ( `id` ) ,constraint `t2_id_fk` foreign key ( `id` ) references `t2` (`id` )) engine = innodb; +insert into `t3`values ( 1 ) ; +delete t3,t2,t1 from t1,t2,t3 where t1.id =1 and t2.id = t1.id and t3.id = t2.id; +ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `t1_id_fk` FOREIGN KEY (`id`) REFERENCES `t1` (`id`)) +update t1,t2,t3 set t3.id=5, t2.id=6, t1.id=7 where t1.id =1 and t2.id = t1.id and t3.id = t2.id; +ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `t1_id_fk` FOREIGN KEY (`id`) REFERENCES `t1` (`id`)) +update t3 set t3.id=7 where t1.id =1 and t2.id = t1.id and t3.id = t2.id; +ERROR 42S22: Unknown column 't1.id' in 'where clause' +drop table t3,t2,t1; +create table t1( +id int primary key, +pid int, +index(pid), +foreign key(pid) references t1(id) on delete cascade) engine=innodb; +insert into t1 values(0,0),(1,0),(2,1),(3,2),(4,3),(5,4),(6,5),(7,6), +(8,7),(9,8),(10,9),(11,10),(12,11),(13,12),(14,13),(15,14); +delete from t1 where id=0; +ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails (`test`.`t1`, CONSTRAINT `t1_ibfk_1` FOREIGN KEY (`pid`) REFERENCES `t1` (`id`) ON DELETE CASCADE) +delete from t1 where id=15; +delete from t1 where id=0; +drop table t1; +CREATE TABLE t1 (col1 int(1))ENGINE=InnoDB; +CREATE TABLE t2 (col1 int(1),stamp TIMESTAMP,INDEX stamp_idx +(stamp))ENGINE=InnoDB; +insert into t1 values (1),(2),(3); +insert into t2 values (1, 20020204130000),(2, 20020204130000),(4,20020204310000 ),(5,20020204230000); +Warnings: +Warning 1265 Data truncated for column 'stamp' at row 3 +SELECT col1 FROM t1 UNION SELECT col1 FROM t2 WHERE stamp < +'20020204120000' GROUP BY col1; +col1 +1 +2 +3 +4 +drop table t1,t2; +CREATE TABLE t1 ( +`id` int(10) unsigned NOT NULL auto_increment, +`id_object` int(10) unsigned default '0', +`id_version` int(10) unsigned NOT NULL default '1', +`label` varchar(100) NOT NULL default '', +`description` text, +PRIMARY KEY (`id`), +KEY `id_object` (`id_object`), +KEY `id_version` (`id_version`) +) ENGINE=InnoDB; +INSERT INTO t1 VALUES("6", "3382", "9", "Test", NULL), ("7", "102", "5", "Le Pekin (Test)", NULL),("584", "1794", "4", "Test de resto", NULL),("837", "1822", "6", "Test 3", NULL),("1119", "3524", "1", "Societe Test", NULL),("1122", "3525", "1", "Fournisseur Test", NULL); +CREATE TABLE t2 ( +`id` int(10) unsigned NOT NULL auto_increment, +`id_version` int(10) unsigned NOT NULL default '1', +PRIMARY KEY (`id`), +KEY `id_version` (`id_version`) +) ENGINE=InnoDB; +INSERT INTO t2 VALUES("3524", "1"),("3525", "1"),("1794", "4"),("102", "5"),("1822", "6"),("3382", "9"); +SELECT t2.id, t1.`label` FROM t2 INNER JOIN +(SELECT t1.id_object as id_object FROM t1 WHERE t1.`label` LIKE '%test%') AS lbl +ON (t2.id = lbl.id_object) INNER JOIN t1 ON (t2.id = t1.id_object); +id label +3382 Test +102 Le Pekin (Test) +1794 Test de resto +1822 Test 3 +3524 Societe Test +3525 Fournisseur Test +drop table t1,t2; +create table t1 (a int, b varchar(200), c text not null) checksum=1 engine=myisam; +create table t2 (a int, b varchar(200), c text not null) checksum=0 engine=innodb; +create table t3 (a int, b varchar(200), c text not null) checksum=1 engine=innodb; +insert t1 values (1, "aaa", "bbb"), (NULL, "", "ccccc"), (0, NULL, ""); +insert t2 select * from t1; +insert t3 select * from t1; +checksum table t1, t2, t3, t4 quick; +Table Checksum +test.t1 3442722830 +test.t2 NULL +test.t3 NULL +test.t4 NULL +Warnings: +Error 1146 Table 'test.t4' doesn't exist +checksum table t1, t2, t3, t4; +Table Checksum +test.t1 3442722830 +test.t2 3442722830 +test.t3 3442722830 +test.t4 NULL +Warnings: +Error 1146 Table 'test.t4' doesn't exist +checksum table t1, t2, t3, t4 extended; +Table Checksum +test.t1 3442722830 +test.t2 3442722830 +test.t3 3442722830 +test.t4 NULL +Warnings: +Error 1146 Table 'test.t4' doesn't exist +drop table t1,t2,t3; +create table t1 (id int, name char(10) not null, name2 char(10) not null) engine=innodb; +insert into t1 values(1,'first','fff'),(2,'second','sss'),(3,'third','ttt'); +select trim(name2) from t1 union all select trim(name) from t1 union all select trim(id) from t1; +trim(name2) +fff +sss +ttt +first +second +third +1 +2 +3 +drop table t1; +create table t1 (a int) engine=innodb; +create table t2 like t1; +drop table t1,t2; +create table t1 (id int(11) not null, id2 int(11) not null, unique (id,id2)) engine=innodb; +create table t2 (id int(11) not null, constraint t1_id_fk foreign key ( id ) references t1 (id)) engine = innodb; +show create table t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `id` int(11) NOT NULL, + `id2` int(11) NOT NULL, + UNIQUE KEY `id` (`id`,`id2`) +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +show create table t2; +Table Create Table +t2 CREATE TABLE `t2` ( + `id` int(11) NOT NULL, + KEY `t1_id_fk` (`id`), + CONSTRAINT `t1_id_fk` FOREIGN KEY (`id`) REFERENCES `t1` (`id`) +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +create index id on t2 (id); +show create table t2; +Table Create Table +t2 CREATE TABLE `t2` ( + `id` int(11) NOT NULL, + KEY `id` (`id`), + CONSTRAINT `t1_id_fk` FOREIGN KEY (`id`) REFERENCES `t1` (`id`) +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +create index id2 on t2 (id); +show create table t2; +Table Create Table +t2 CREATE TABLE `t2` ( + `id` int(11) NOT NULL, + KEY `id` (`id`), + KEY `id2` (`id`), + CONSTRAINT `t1_id_fk` FOREIGN KEY (`id`) REFERENCES `t1` (`id`) +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +drop index id2 on t2; +drop index id on t2; +ERROR HY000: Cannot drop index 'id': needed in a foreign key constraint +show create table t2; +Table Create Table +t2 CREATE TABLE `t2` ( + `id` int(11) NOT NULL, + KEY `id` (`id`), + CONSTRAINT `t1_id_fk` FOREIGN KEY (`id`) REFERENCES `t1` (`id`) +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +drop table t2; +create table t2 (id int(11) not null, id2 int(11) not null, constraint t1_id_fk foreign key (id,id2) references t1 (id,id2)) engine = innodb; +show create table t2; +Table Create Table +t2 CREATE TABLE `t2` ( + `id` int(11) NOT NULL, + `id2` int(11) NOT NULL, + KEY `t1_id_fk` (`id`,`id2`), + CONSTRAINT `t1_id_fk` FOREIGN KEY (`id`, `id2`) REFERENCES `t1` (`id`, `id2`) +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +create unique index id on t2 (id,id2); +show create table t2; +Table Create Table +t2 CREATE TABLE `t2` ( + `id` int(11) NOT NULL, + `id2` int(11) NOT NULL, + UNIQUE KEY `id` (`id`,`id2`), + CONSTRAINT `t1_id_fk` FOREIGN KEY (`id`, `id2`) REFERENCES `t1` (`id`, `id2`) +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +drop table t2; +create table t2 (id int(11) not null, id2 int(11) not null, unique (id,id2),constraint t1_id_fk foreign key (id2,id) references t1 (id,id2)) engine = innodb; +show create table t2; +Table Create Table +t2 CREATE TABLE `t2` ( + `id` int(11) NOT NULL, + `id2` int(11) NOT NULL, + UNIQUE KEY `id` (`id`,`id2`), + KEY `t1_id_fk` (`id2`,`id`), + CONSTRAINT `t1_id_fk` FOREIGN KEY (`id2`, `id`) REFERENCES `t1` (`id`, `id2`) +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +drop table t2; +create table t2 (id int(11) not null, id2 int(11) not null, unique (id,id2), constraint t1_id_fk foreign key (id) references t1 (id)) engine = innodb; +show create table t2; +Table Create Table +t2 CREATE TABLE `t2` ( + `id` int(11) NOT NULL, + `id2` int(11) NOT NULL, + UNIQUE KEY `id` (`id`,`id2`), + CONSTRAINT `t1_id_fk` FOREIGN KEY (`id`) REFERENCES `t1` (`id`) +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +drop table t2; +create table t2 (id int(11) not null, id2 int(11) not null, unique (id,id2),constraint t1_id_fk foreign key (id2,id) references t1 (id,id2)) engine = innodb; +show create table t2; +Table Create Table +t2 CREATE TABLE `t2` ( + `id` int(11) NOT NULL, + `id2` int(11) NOT NULL, + UNIQUE KEY `id` (`id`,`id2`), + KEY `t1_id_fk` (`id2`,`id`), + CONSTRAINT `t1_id_fk` FOREIGN KEY (`id2`, `id`) REFERENCES `t1` (`id`, `id2`) +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +drop table t2; +create table t2 (id int(11) not null auto_increment, id2 int(11) not null, constraint t1_id_fk foreign key (id) references t1 (id), primary key (id), index (id,id2)) engine = innodb; +show create table t2; +Table Create Table +t2 CREATE TABLE `t2` ( + `id` int(11) NOT NULL AUTO_INCREMENT, + `id2` int(11) NOT NULL, + PRIMARY KEY (`id`), + KEY `id` (`id`,`id2`), + CONSTRAINT `t1_id_fk` FOREIGN KEY (`id`) REFERENCES `t1` (`id`) +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +drop table t2; +create table t2 (id int(11) not null auto_increment, id2 int(11) not null, constraint t1_id_fk foreign key (id) references t1 (id)) engine= innodb; +show create table t2; +Table Create Table +t2 CREATE TABLE `t2` ( + `id` int(11) NOT NULL AUTO_INCREMENT, + `id2` int(11) NOT NULL, + KEY `t1_id_fk` (`id`), + CONSTRAINT `t1_id_fk` FOREIGN KEY (`id`) REFERENCES `t1` (`id`) +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +alter table t2 add index id_test (id), add index id_test2 (id,id2); +show create table t2; +Table Create Table +t2 CREATE TABLE `t2` ( + `id` int(11) NOT NULL AUTO_INCREMENT, + `id2` int(11) NOT NULL, + KEY `id_test` (`id`), + KEY `id_test2` (`id`,`id2`), + CONSTRAINT `t1_id_fk` FOREIGN KEY (`id`) REFERENCES `t1` (`id`) +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +drop table t2; +create table t2 (id int(11) not null, id2 int(11) not null, constraint t1_id_fk foreign key (id2,id) references t1 (id)) engine = innodb; +ERROR 42000: Incorrect foreign key definition for 't1_id_fk': Key reference and table reference don't match +create table t2 (a int auto_increment primary key, b int, index(b), foreign key (b) references t1(id), unique(b)) engine=innodb; +show create table t2; +Table Create Table +t2 CREATE TABLE `t2` ( + `a` int(11) NOT NULL AUTO_INCREMENT, + `b` int(11) DEFAULT NULL, + PRIMARY KEY (`a`), + UNIQUE KEY `b_2` (`b`), + KEY `b` (`b`), + CONSTRAINT `t2_ibfk_1` FOREIGN KEY (`b`) REFERENCES `t1` (`id`) +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +drop table t2; +create table t2 (a int auto_increment primary key, b int, foreign key (b) references t1(id), foreign key (b) references t1(id), unique(b)) engine=innodb; +show create table t2; +Table Create Table +t2 CREATE TABLE `t2` ( + `a` int(11) NOT NULL AUTO_INCREMENT, + `b` int(11) DEFAULT NULL, + PRIMARY KEY (`a`), + UNIQUE KEY `b` (`b`), + CONSTRAINT `t2_ibfk_1` FOREIGN KEY (`b`) REFERENCES `t1` (`id`), + CONSTRAINT `t2_ibfk_2` FOREIGN KEY (`b`) REFERENCES `t1` (`id`) +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +drop table t2, t1; +create table t1 (c char(10), index (c,c)) engine=innodb; +ERROR 42S21: Duplicate column name 'c' +create table t1 (c1 char(10), c2 char(10), index (c1,c2,c1)) engine=innodb; +ERROR 42S21: Duplicate column name 'c1' +create table t1 (c1 char(10), c2 char(10), index (c1,c1,c2)) engine=innodb; +ERROR 42S21: Duplicate column name 'c1' +create table t1 (c1 char(10), c2 char(10), index (c2,c1,c1)) engine=innodb; +ERROR 42S21: Duplicate column name 'c1' +create table t1 (c1 char(10), c2 char(10)) engine=innodb; +alter table t1 add key (c1,c1); +ERROR 42S21: Duplicate column name 'c1' +alter table t1 add key (c2,c1,c1); +ERROR 42S21: Duplicate column name 'c1' +alter table t1 add key (c1,c2,c1); +ERROR 42S21: Duplicate column name 'c1' +alter table t1 add key (c1,c1,c2); +ERROR 42S21: Duplicate column name 'c1' +drop table t1; +create table t1(a int(1) , b int(1)) engine=innodb; +insert into t1 values ('1111', '3333'); +select distinct concat(a, b) from t1; +concat(a, b) +11113333 +drop table t1; +CREATE TABLE t1 ( a char(10) ) ENGINE=InnoDB; +SELECT a FROM t1 WHERE MATCH (a) AGAINST ('test' IN BOOLEAN MODE); +ERROR HY000: The used table type doesn't support FULLTEXT indexes +DROP TABLE t1; +CREATE TABLE t1 (a_id tinyint(4) NOT NULL default '0', PRIMARY KEY (a_id)) ENGINE=InnoDB DEFAULT CHARSET=latin1; +INSERT INTO t1 VALUES (1),(2),(3); +CREATE TABLE t2 (b_id tinyint(4) NOT NULL default '0',b_a tinyint(4) NOT NULL default '0', PRIMARY KEY (b_id), KEY (b_a), +CONSTRAINT fk_b_a FOREIGN KEY (b_a) REFERENCES t1 (a_id) ON DELETE CASCADE ON UPDATE NO ACTION) ENGINE=InnoDB DEFAULT CHARSET=latin1; +INSERT INTO t2 VALUES (1,1),(2,1),(3,1),(4,2),(5,2); +SELECT * FROM (SELECT t1.*,GROUP_CONCAT(t2.b_id SEPARATOR ',') as b_list FROM (t1 LEFT JOIN (t2) on t1.a_id = t2.b_a) GROUP BY t1.a_id ) AS xyz; +a_id b_list +1 1,2,3 +2 4,5 +3 NULL +DROP TABLE t2; +DROP TABLE t1; +create temporary table t1 (a int) engine=innodb; +insert into t1 values (4711); +truncate t1; +insert into t1 values (42); +select * from t1; +a +42 +drop table t1; +create table t1 (a int) engine=innodb; +insert into t1 values (4711); +truncate t1; +insert into t1 values (42); +select * from t1; +a +42 +drop table t1; +create table t1 (a int not null, b int not null, c blob not null, d int not null, e int, primary key (a,b,c(255),d)) engine=innodb; +insert into t1 values (2,2,"b",2,2),(1,1,"a",1,1),(3,3,"ab",3,3); +select * from t1 order by a,b,c,d; +a b c d e +1 1 a 1 1 +2 2 b 2 2 +3 3 ab 3 3 +explain select * from t1 order by a,b,c,d; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using filesort +drop table t1; +create table t1 (a char(1), b char(1), key(a, b)) engine=innodb; +insert into t1 values ('8', '6'), ('4', '7'); +select min(a) from t1; +min(a) +4 +select min(b) from t1 where a='8'; +min(b) +6 +drop table t1; +create table t1 (x bigint unsigned not null primary key) engine=innodb; +insert into t1(x) values (0xfffffffffffffff0),(0xfffffffffffffff1); +select * from t1; +x +18446744073709551600 +18446744073709551601 +select count(*) from t1 where x>0; +count(*) +2 +select count(*) from t1 where x=0; +count(*) +0 +select count(*) from t1 where x<0; +count(*) +0 +select count(*) from t1 where x < -16; +count(*) +0 +select count(*) from t1 where x = -16; +count(*) +0 +explain select count(*) from t1 where x > -16; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index PRIMARY PRIMARY 8 NULL 2 Using where; Using index +select count(*) from t1 where x > -16; +count(*) +2 +select * from t1 where x > -16; +x +18446744073709551600 +18446744073709551601 +select count(*) from t1 where x = 18446744073709551601; +count(*) +1 +drop table t1; +show status like "Innodb_buffer_pool_pages_total"; +Variable_name Value +Innodb_buffer_pool_pages_total 511 +show status like "Innodb_page_size"; +Variable_name Value +Innodb_page_size 16384 +show status like "Innodb_rows_deleted"; +Variable_name Value +Innodb_rows_deleted 71 +show status like "Innodb_rows_inserted"; +Variable_name Value +Innodb_rows_inserted 1084 +show status like "Innodb_rows_updated"; +Variable_name Value +Innodb_rows_updated 885 +show status like "Innodb_row_lock_waits"; +Variable_name Value +Innodb_row_lock_waits 0 +show status like "Innodb_row_lock_current_waits"; +Variable_name Value +Innodb_row_lock_current_waits 0 +show status like "Innodb_row_lock_time"; +Variable_name Value +Innodb_row_lock_time 0 +show status like "Innodb_row_lock_time_max"; +Variable_name Value +Innodb_row_lock_time_max 0 +show status like "Innodb_row_lock_time_avg"; +Variable_name Value +Innodb_row_lock_time_avg 0 +show variables like "innodb_sync_spin_loops"; +Variable_name Value +innodb_sync_spin_loops 20 +set global innodb_sync_spin_loops=1000; +show variables like "innodb_sync_spin_loops"; +Variable_name Value +innodb_sync_spin_loops 1000 +set global innodb_sync_spin_loops=0; +show variables like "innodb_sync_spin_loops"; +Variable_name Value +innodb_sync_spin_loops 0 +set global innodb_sync_spin_loops=20; +show variables like "innodb_sync_spin_loops"; +Variable_name Value +innodb_sync_spin_loops 20 +SET @old_innodb_thread_concurrency= @@global.innodb_thread_concurrency; +show variables like "innodb_thread_concurrency"; +Variable_name Value +innodb_thread_concurrency 0 +set global innodb_thread_concurrency=1001; +Warnings: +Warning 1292 Truncated incorrect thread_concurrency value: '1001' +show variables like "innodb_thread_concurrency"; +Variable_name Value +innodb_thread_concurrency 1000 +set global innodb_thread_concurrency=0; +show variables like "innodb_thread_concurrency"; +Variable_name Value +innodb_thread_concurrency 0 +set global innodb_thread_concurrency=16; +show variables like "innodb_thread_concurrency"; +Variable_name Value +innodb_thread_concurrency 16 +SET @@global.innodb_thread_concurrency= @old_innodb_thread_concurrency; +show variables like "innodb_concurrency_tickets"; +Variable_name Value +innodb_concurrency_tickets 500 +set global innodb_concurrency_tickets=1000; +show variables like "innodb_concurrency_tickets"; +Variable_name Value +innodb_concurrency_tickets 1000 +set global innodb_concurrency_tickets=0; +Warnings: +Warning 1292 Truncated incorrect concurrency_tickets value: '0' +show variables like "innodb_concurrency_tickets"; +Variable_name Value +innodb_concurrency_tickets 1 +set global innodb_concurrency_tickets=500; +show variables like "innodb_concurrency_tickets"; +Variable_name Value +innodb_concurrency_tickets 500 +show variables like "innodb_thread_sleep_delay"; +Variable_name Value +innodb_thread_sleep_delay 10000 +set global innodb_thread_sleep_delay=100000; +show variables like "innodb_thread_sleep_delay"; +Variable_name Value +innodb_thread_sleep_delay 100000 +set global innodb_thread_sleep_delay=0; +show variables like "innodb_thread_sleep_delay"; +Variable_name Value +innodb_thread_sleep_delay 0 +set global innodb_thread_sleep_delay=10000; +show variables like "innodb_thread_sleep_delay"; +Variable_name Value +innodb_thread_sleep_delay 10000 +set storage_engine=INNODB; +drop table if exists t1,t2,t3; +--- Testing varchar --- +--- Testing varchar --- +create table t1 (v varchar(10), c char(10), t text); +insert into t1 values('+ ', '+ ', '+ '); +set @a=repeat(' ',20); +insert into t1 values (concat('+',@a),concat('+',@a),concat('+',@a)); +Warnings: +Note 1265 Data truncated for column 'v' at row 1 +select concat('*',v,'*',c,'*',t,'*') from t1; +concat('*',v,'*',c,'*',t,'*') +*+ *+*+ * +*+ *+*+ * +show create table t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `v` varchar(10) DEFAULT NULL, + `c` char(10) DEFAULT NULL, + `t` text +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +create table t2 like t1; +show create table t2; +Table Create Table +t2 CREATE TABLE `t2` ( + `v` varchar(10) DEFAULT NULL, + `c` char(10) DEFAULT NULL, + `t` text +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +create table t3 select * from t1; +show create table t3; +Table Create Table +t3 CREATE TABLE `t3` ( + `v` varchar(10) DEFAULT NULL, + `c` char(10) DEFAULT NULL, + `t` text +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +alter table t1 modify c varchar(10); +show create table t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `v` varchar(10) DEFAULT NULL, + `c` varchar(10) DEFAULT NULL, + `t` text +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +alter table t1 modify v char(10); +show create table t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `v` char(10) DEFAULT NULL, + `c` varchar(10) DEFAULT NULL, + `t` text +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +alter table t1 modify t varchar(10); +Warnings: +Note 1265 Data truncated for column 't' at row 2 +show create table t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `v` char(10) DEFAULT NULL, + `c` varchar(10) DEFAULT NULL, + `t` varchar(10) DEFAULT NULL +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +select concat('*',v,'*',c,'*',t,'*') from t1; +concat('*',v,'*',c,'*',t,'*') +*+*+*+ * +*+*+*+ * +drop table t1,t2,t3; +create table t1 (v varchar(10), c char(10), t text, key(v), key(c), key(t(10))); +show create table t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `v` varchar(10) DEFAULT NULL, + `c` char(10) DEFAULT NULL, + `t` text, + KEY `v` (`v`), + KEY `c` (`c`), + KEY `t` (`t`(10)) +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +select count(*) from t1; +count(*) +270 +insert into t1 values(concat('a',char(1)),concat('a',char(1)),concat('a',char(1))); +select count(*) from t1 where v='a'; +count(*) +10 +select count(*) from t1 where c='a'; +count(*) +10 +select count(*) from t1 where t='a'; +count(*) +10 +select count(*) from t1 where v='a '; +count(*) +10 +select count(*) from t1 where c='a '; +count(*) +10 +select count(*) from t1 where t='a '; +count(*) +10 +select count(*) from t1 where v between 'a' and 'a '; +count(*) +10 +select count(*) from t1 where v between 'a' and 'a ' and v between 'a ' and 'b\n'; +count(*) +10 +select count(*) from t1 where v like 'a%'; +count(*) +11 +select count(*) from t1 where c like 'a%'; +count(*) +11 +select count(*) from t1 where t like 'a%'; +count(*) +11 +select count(*) from t1 where v like 'a %'; +count(*) +9 +explain select count(*) from t1 where v='a '; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ref v v 13 const # Using where; Using index +explain select count(*) from t1 where c='a '; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ref c c 11 const # Using where; Using index +explain select count(*) from t1 where t='a '; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ref t t 13 const # Using where +explain select count(*) from t1 where v like 'a%'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 range v v 13 NULL # Using where; Using index +explain select count(*) from t1 where v between 'a' and 'a '; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ref v v 13 const # Using where; Using index +explain select count(*) from t1 where v between 'a' and 'a ' and v between 'a ' and 'b\n'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ref v v 13 const # Using where; Using index +alter table t1 add unique(v); +ERROR 23000: Duplicate entry 'v' for key 'v_2' +alter table t1 add key(v); +select concat('*',v,'*',c,'*',t,'*') as qq from t1 where v='a'; +qq +*a*a*a* +*a *a*a * +*a *a*a * +*a *a*a * +*a *a*a * +*a *a*a * +*a *a*a * +*a *a*a * +*a *a*a * +*a *a*a * +explain select * from t1 where v='a'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ref v,v_2 # 13 const # Using where +select v,count(*) from t1 group by v limit 10; +v count(*) +a 1 +a 10 +b 10 +c 10 +d 10 +e 10 +f 10 +g 10 +h 10 +i 10 +select v,count(t) from t1 group by v limit 10; +v count(t) +a 1 +a 10 +b 10 +c 10 +d 10 +e 10 +f 10 +g 10 +h 10 +i 10 +select v,count(c) from t1 group by v limit 10; +v count(c) +a 1 +a 10 +b 10 +c 10 +d 10 +e 10 +f 10 +g 10 +h 10 +i 10 +select sql_big_result v,count(t) from t1 group by v limit 10; +v count(t) +a 1 +a 10 +b 10 +c 10 +d 10 +e 10 +f 10 +g 10 +h 10 +i 10 +select sql_big_result v,count(c) from t1 group by v limit 10; +v count(c) +a 1 +a 10 +b 10 +c 10 +d 10 +e 10 +f 10 +g 10 +h 10 +i 10 +select c,count(*) from t1 group by c limit 10; +c count(*) +a 1 +a 10 +b 10 +c 10 +d 10 +e 10 +f 10 +g 10 +h 10 +i 10 +select c,count(t) from t1 group by c limit 10; +c count(t) +a 1 +a 10 +b 10 +c 10 +d 10 +e 10 +f 10 +g 10 +h 10 +i 10 +select sql_big_result c,count(t) from t1 group by c limit 10; +c count(t) +a 1 +a 10 +b 10 +c 10 +d 10 +e 10 +f 10 +g 10 +h 10 +i 10 +select t,count(*) from t1 group by t limit 10; +t count(*) +a 1 +a 10 +b 10 +c 10 +d 10 +e 10 +f 10 +g 10 +h 10 +i 10 +select t,count(t) from t1 group by t limit 10; +t count(t) +a 1 +a 10 +b 10 +c 10 +d 10 +e 10 +f 10 +g 10 +h 10 +i 10 +select sql_big_result t,count(t) from t1 group by t limit 10; +t count(t) +a 1 +a 10 +b 10 +c 10 +d 10 +e 10 +f 10 +g 10 +h 10 +i 10 +alter table t1 modify v varchar(300), drop key v, drop key v_2, add key v (v); +show create table t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `v` varchar(300) DEFAULT NULL, + `c` char(10) DEFAULT NULL, + `t` text, + KEY `c` (`c`), + KEY `t` (`t`(10)), + KEY `v` (`v`) +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +select count(*) from t1 where v='a'; +count(*) +10 +select count(*) from t1 where v='a '; +count(*) +10 +select count(*) from t1 where v between 'a' and 'a '; +count(*) +10 +select count(*) from t1 where v between 'a' and 'a ' and v between 'a ' and 'b\n'; +count(*) +10 +select count(*) from t1 where v like 'a%'; +count(*) +11 +select count(*) from t1 where v like 'a %'; +count(*) +9 +explain select count(*) from t1 where v='a '; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ref v v 303 const # Using where; Using index +explain select count(*) from t1 where v like 'a%'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 range v v 303 NULL # Using where; Using index +explain select count(*) from t1 where v between 'a' and 'a '; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ref v v 303 const # Using where; Using index +explain select count(*) from t1 where v between 'a' and 'a ' and v between 'a ' and 'b\n'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ref v v 303 const # Using where; Using index +explain select * from t1 where v='a'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ref v v 303 const # Using where +select v,count(*) from t1 group by v limit 10; +v count(*) +a 1 +a 10 +b 10 +c 10 +d 10 +e 10 +f 10 +g 10 +h 10 +i 10 +select v,count(t) from t1 group by v limit 10; +v count(t) +a 1 +a 10 +b 10 +c 10 +d 10 +e 10 +f 10 +g 10 +h 10 +i 10 +select sql_big_result v,count(t) from t1 group by v limit 10; +v count(t) +a 1 +a 10 +b 10 +c 10 +d 10 +e 10 +f 10 +g 10 +h 10 +i 10 +alter table t1 drop key v, add key v (v(30)); +show create table t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `v` varchar(300) DEFAULT NULL, + `c` char(10) DEFAULT NULL, + `t` text, + KEY `c` (`c`), + KEY `t` (`t`(10)), + KEY `v` (`v`(30)) +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +select count(*) from t1 where v='a'; +count(*) +10 +select count(*) from t1 where v='a '; +count(*) +10 +select count(*) from t1 where v between 'a' and 'a '; +count(*) +10 +select count(*) from t1 where v between 'a' and 'a ' and v between 'a ' and 'b\n'; +count(*) +10 +select count(*) from t1 where v like 'a%'; +count(*) +11 +select count(*) from t1 where v like 'a %'; +count(*) +9 +explain select count(*) from t1 where v='a '; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ref v v 33 const # Using where +explain select count(*) from t1 where v like 'a%'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 range v v 33 NULL # Using where +explain select count(*) from t1 where v between 'a' and 'a '; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ref v v 33 const # Using where +explain select count(*) from t1 where v between 'a' and 'a ' and v between 'a ' and 'b\n'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ref v v 33 const # Using where +explain select * from t1 where v='a'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ref v v 33 const # Using where +select v,count(*) from t1 group by v limit 10; +v count(*) +a 1 +a 10 +b 10 +c 10 +d 10 +e 10 +f 10 +g 10 +h 10 +i 10 +select v,count(t) from t1 group by v limit 10; +v count(t) +a 1 +a 10 +b 10 +c 10 +d 10 +e 10 +f 10 +g 10 +h 10 +i 10 +select sql_big_result v,count(t) from t1 group by v limit 10; +v count(t) +a 1 +a 10 +b 10 +c 10 +d 10 +e 10 +f 10 +g 10 +h 10 +i 10 +alter table t1 modify v varchar(600), drop key v, add key v (v); +show create table t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `v` varchar(600) DEFAULT NULL, + `c` char(10) DEFAULT NULL, + `t` text, + KEY `c` (`c`), + KEY `t` (`t`(10)), + KEY `v` (`v`) +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +select v,count(*) from t1 group by v limit 10; +v count(*) +a 1 +a 10 +b 10 +c 10 +d 10 +e 10 +f 10 +g 10 +h 10 +i 10 +select v,count(t) from t1 group by v limit 10; +v count(t) +a 1 +a 10 +b 10 +c 10 +d 10 +e 10 +f 10 +g 10 +h 10 +i 10 +select sql_big_result v,count(t) from t1 group by v limit 10; +v count(t) +a 1 +a 10 +b 10 +c 10 +d 10 +e 10 +f 10 +g 10 +h 10 +i 10 +drop table t1; +create table t1 (a char(10), unique (a)); +insert into t1 values ('a '); +insert into t1 values ('a '); +ERROR 23000: Duplicate entry 'a' for key 'a' +alter table t1 modify a varchar(10); +insert into t1 values ('a '),('a '),('a '),('a '); +ERROR 23000: Duplicate entry 'a ' for key 'a' +insert into t1 values ('a '); +ERROR 23000: Duplicate entry 'a ' for key 'a' +insert into t1 values ('a '); +ERROR 23000: Duplicate entry 'a ' for key 'a' +insert into t1 values ('a '); +ERROR 23000: Duplicate entry 'a ' for key 'a' +update t1 set a='a ' where a like 'a%'; +select concat(a,'.') from t1; +concat(a,'.') +a . +update t1 set a='abc ' where a like 'a '; +select concat(a,'.') from t1; +concat(a,'.') +a . +update t1 set a='a ' where a like 'a %'; +select concat(a,'.') from t1; +concat(a,'.') +a . +update t1 set a='a ' where a like 'a '; +select concat(a,'.') from t1; +concat(a,'.') +a . +drop table t1; +create table t1 (v varchar(10), c char(10), t text, key(v(5)), key(c(5)), key(t(5))); +show create table t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `v` varchar(10) DEFAULT NULL, + `c` char(10) DEFAULT NULL, + `t` text, + KEY `v` (`v`(5)), + KEY `c` (`c`(5)), + KEY `t` (`t`(5)) +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +drop table t1; +create table t1 (v char(10) character set utf8); +show create table t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `v` char(10) CHARACTER SET utf8 DEFAULT NULL +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +drop table t1; +create table t1 (v varchar(10), c char(10)) row_format=fixed; +Warnings: +Warning 1478 InnoDB: assuming ROW_FORMAT=COMPACT. +show create table t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `v` varchar(10) DEFAULT NULL, + `c` char(10) DEFAULT NULL +) ENGINE=InnoDB DEFAULT CHARSET=latin1 ROW_FORMAT=FIXED +insert into t1 values('a','a'),('a ','a '); +select concat('*',v,'*',c,'*') from t1; +concat('*',v,'*',c,'*') +*a*a* +*a *a* +drop table t1; +create table t1 (v varchar(65530), key(v(10))); +insert into t1 values(repeat('a',65530)); +select length(v) from t1 where v=repeat('a',65530); +length(v) +65530 +drop table t1; +create table t1(a int, b varchar(12), key ba(b, a)); +insert into t1 values (1, 'A'), (20, NULL); +explain select * from t1 where a=20 and b is null; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ref ba ba 20 const,const 1 Using where; Using index +select * from t1 where a=20 and b is null; +a b +20 NULL +drop table t1; +create table t1 (v varchar(65530), key(v)); +Warnings: +Warning 1071 Specified key was too long; max key length is 767 bytes +drop table t1; +create table t1 (v varchar(65536)); +Warnings: +Note 1246 Converting column 'v' from VARCHAR to TEXT +show create table t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `v` mediumtext +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +drop table t1; +create table t1 (v varchar(65530) character set utf8); +Warnings: +Note 1246 Converting column 'v' from VARCHAR to TEXT +show create table t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `v` mediumtext CHARACTER SET utf8 +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +drop table t1; +set storage_engine=MyISAM; +create table t1 (v varchar(16384)) engine=innodb; +drop table t1; +create table t1 (a char(1), b char(1), key(a, b)) engine=innodb; +insert into t1 values ('8', '6'), ('4', '7'); +select min(a) from t1; +min(a) +4 +select min(b) from t1 where a='8'; +min(b) +6 +drop table t1; +CREATE TABLE t1 ( `a` int(11) NOT NULL auto_increment, `b` int(11) default NULL,PRIMARY KEY (`a`),UNIQUE KEY `b` (`b`)) ENGINE=innodb; +insert into t1 (b) values (1); +replace into t1 (b) values (2), (1), (3); +select * from t1; +a b +3 1 +2 2 +4 3 +truncate table t1; +insert into t1 (b) values (1); +replace into t1 (b) values (2); +replace into t1 (b) values (1); +replace into t1 (b) values (3); +select * from t1; +a b +3 1 +2 2 +4 3 +drop table t1; +create table t1 (rowid int not null auto_increment, val int not null,primary +key (rowid), unique(val)) engine=innodb; +replace into t1 (val) values ('1'),('2'); +replace into t1 (val) values ('1'),('2'); +insert into t1 (val) values ('1'),('2'); +ERROR 23000: Duplicate entry '1' for key 'val' +select * from t1; +rowid val +3 1 +4 2 +drop table t1; +create table t1 (a int not null auto_increment primary key, val int) engine=InnoDB; +insert into t1 (val) values (1); +update t1 set a=2 where a=1; +insert into t1 (val) values (1); +ERROR 23000: Duplicate entry '2' for key 'PRIMARY' +select * from t1; +a val +2 1 +drop table t1; +CREATE TABLE t1 (GRADE DECIMAL(4) NOT NULL, PRIMARY KEY (GRADE)) ENGINE=INNODB; +INSERT INTO t1 (GRADE) VALUES (151),(252),(343); +SELECT GRADE FROM t1 WHERE GRADE > 160 AND GRADE < 300; +GRADE +252 +SELECT GRADE FROM t1 WHERE GRADE= 151; +GRADE +151 +DROP TABLE t1; +create table t1 (f1 varchar(10), f2 varchar(10), primary key (f1,f2)) engine=innodb; +create table t2 (f3 varchar(10), f4 varchar(10), key (f4)) engine=innodb; +insert into t2 values ('aa','cc'); +insert into t1 values ('aa','bb'),('aa','cc'); +delete t1 from t1,t2 where f1=f3 and f4='cc'; +select * from t1; +f1 f2 +drop table t1,t2; +CREATE TABLE t1 ( +id INTEGER NOT NULL AUTO_INCREMENT, PRIMARY KEY (id) +) ENGINE=InnoDB; +CREATE TABLE t2 ( +id INTEGER NOT NULL, +FOREIGN KEY (id) REFERENCES t1 (id) +) ENGINE=InnoDB; +INSERT INTO t1 (id) VALUES (NULL); +SELECT * FROM t1; +id +1 +TRUNCATE t1; +INSERT INTO t1 (id) VALUES (NULL); +SELECT * FROM t1; +id +1 +DELETE FROM t1; +TRUNCATE t1; +INSERT INTO t1 (id) VALUES (NULL); +SELECT * FROM t1; +id +1 +DROP TABLE t2, t1; +CREATE TABLE t1 +( +id INT PRIMARY KEY +) ENGINE=InnoDB; +CREATE TEMPORARY TABLE t2 +( +id INT NOT NULL PRIMARY KEY, +b INT, +FOREIGN KEY (b) REFERENCES test.t1(id) +) ENGINE=InnoDB; +Got one of the listed errors +DROP TABLE t1; +create table t1 (col1 varchar(2000), index (col1(767))) +character set = latin1 engine = innodb; +create table t2 (col1 char(255), index (col1)) +character set = latin1 engine = innodb; +create table t3 (col1 binary(255), index (col1)) +character set = latin1 engine = innodb; +create table t4 (col1 varchar(767), index (col1)) +character set = latin1 engine = innodb; +create table t5 (col1 varchar(767) primary key) +character set = latin1 engine = innodb; +create table t6 (col1 varbinary(767) primary key) +character set = latin1 engine = innodb; +create table t7 (col1 text, index(col1(767))) +character set = latin1 engine = innodb; +create table t8 (col1 blob, index(col1(767))) +character set = latin1 engine = innodb; +create table t9 (col1 varchar(512), col2 varchar(512), index(col1, col2)) +character set = latin1 engine = innodb; +show create table t9; +Table Create Table +t9 CREATE TABLE `t9` ( + `col1` varchar(512) DEFAULT NULL, + `col2` varchar(512) DEFAULT NULL, + KEY `col1` (`col1`,`col2`) +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +drop table t1, t2, t3, t4, t5, t6, t7, t8, t9; +create table t1 (col1 varchar(768), index(col1)) +character set = latin1 engine = innodb; +Warnings: +Warning 1071 Specified key was too long; max key length is 767 bytes +create table t2 (col1 varbinary(768), index(col1)) +character set = latin1 engine = innodb; +Warnings: +Warning 1071 Specified key was too long; max key length is 767 bytes +create table t3 (col1 text, index(col1(768))) +character set = latin1 engine = innodb; +Warnings: +Warning 1071 Specified key was too long; max key length is 767 bytes +create table t4 (col1 blob, index(col1(768))) +character set = latin1 engine = innodb; +Warnings: +Warning 1071 Specified key was too long; max key length is 767 bytes +show create table t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `col1` varchar(768) DEFAULT NULL, + KEY `col1` (`col1`(767)) +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +drop table t1, t2, t3, t4; +create table t1 (col1 varchar(768) primary key) +character set = latin1 engine = innodb; +ERROR 42000: Specified key was too long; max key length is 767 bytes +create table t2 (col1 varbinary(768) primary key) +character set = latin1 engine = innodb; +ERROR 42000: Specified key was too long; max key length is 767 bytes +create table t3 (col1 text, primary key(col1(768))) +character set = latin1 engine = innodb; +ERROR 42000: Specified key was too long; max key length is 767 bytes +create table t4 (col1 blob, primary key(col1(768))) +character set = latin1 engine = innodb; +ERROR 42000: Specified key was too long; max key length is 767 bytes +CREATE TABLE t1 +( +id INT PRIMARY KEY +) ENGINE=InnoDB; +CREATE TABLE t2 +( +v INT, +CONSTRAINT c1 FOREIGN KEY (v) REFERENCES t1(id) +) ENGINE=InnoDB; +INSERT INTO t2 VALUES(2); +ERROR 23000: Cannot add or update a child row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `c1` FOREIGN KEY (`v`) REFERENCES `t1` (`id`)) +INSERT INTO t1 VALUES(1); +INSERT INTO t2 VALUES(1); +DELETE FROM t1 WHERE id = 1; +ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `c1` FOREIGN KEY (`v`) REFERENCES `t1` (`id`)) +DROP TABLE t1; +ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails +SET FOREIGN_KEY_CHECKS=0; +DROP TABLE t1; +SET FOREIGN_KEY_CHECKS=1; +INSERT INTO t2 VALUES(3); +ERROR 23000: Cannot add or update a child row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `c1` FOREIGN KEY (`v`) REFERENCES `t1` (`id`)) +DROP TABLE t2; +create table t1(a int not null) engine=innodb DEFAULT CHARSET=latin1; +insert into t1 values (1),(2); +set autocommit=0; +checksum table t1; +Table Checksum +test.t1 1531596814 +insert into t1 values(3); +checksum table t1; +Table Checksum +test.t1 1531596814 +commit; +checksum table t1; +Table Checksum +test.t1 2050879373 +commit; +drop table t1; +create table t1(a int not null) engine=innodb DEFAULT CHARSET=latin1; +insert into t1 values (1),(2); +set autocommit=1; +checksum table t1; +Table Checksum +test.t1 1531596814 +set autocommit=1; +insert into t1 values(3); +checksum table t1; +Table Checksum +test.t1 2050879373 +drop table t1; +set foreign_key_checks=0; +create table t2 (a int primary key, b int, foreign key (b) references t1(a)) engine = innodb; +create table t1(a char(10) primary key, b varchar(20)) engine = innodb; +ERROR HY000: Can't create table 'test.t1' (errno: 150) +set foreign_key_checks=1; +drop table t2; +set foreign_key_checks=0; +create table t1(a varchar(10) primary key) engine = innodb DEFAULT CHARSET=latin1; +create table t2 (a varchar(10), foreign key (a) references t1(a)) engine = innodb DEFAULT CHARSET=utf8; +ERROR HY000: Can't create table 'test.t2' (errno: 150) +set foreign_key_checks=1; +drop table t1; +set foreign_key_checks=0; +create table t2 (a varchar(10), foreign key (a) references t1(a)) engine = innodb; +create table t1(a varchar(10) primary key) engine = innodb; +alter table t1 modify column a int; +Got one of the listed errors +set foreign_key_checks=1; +drop table t2,t1; +set foreign_key_checks=0; +create table t2 (a varchar(10), foreign key (a) references t1(a)) engine = innodb DEFAULT CHARSET=latin1; +create table t1(a varchar(10) primary key) engine = innodb DEFAULT CHARSET=latin1; +alter table t1 convert to character set utf8; +set foreign_key_checks=1; +drop table t2,t1; +set foreign_key_checks=0; +create table t2 (a varchar(10), foreign key (a) references t1(a)) engine = innodb DEFAULT CHARSET=latin1; +create table t3(a varchar(10) primary key) engine = innodb DEFAULT CHARSET=utf8; +rename table t3 to t1; +ERROR HY000: Error on rename of './test/t3' to './test/t1' (errno: 150) +set foreign_key_checks=1; +drop table t2,t3; +create table t1(a int primary key) row_format=redundant engine=innodb; +create table t2(a int primary key,constraint foreign key(a)references t1(a)) row_format=compact engine=innodb; +create table t3(a int primary key) row_format=compact engine=innodb; +create table t4(a int primary key,constraint foreign key(a)references t3(a)) row_format=redundant engine=innodb; +insert into t1 values(1); +insert into t3 values(1); +insert into t2 values(2); +ERROR 23000: Cannot add or update a child row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `t2_ibfk_1` FOREIGN KEY (`a`) REFERENCES `t1` (`a`)) +insert into t4 values(2); +ERROR 23000: Cannot add or update a child row: a foreign key constraint fails (`test`.`t4`, CONSTRAINT `t4_ibfk_1` FOREIGN KEY (`a`) REFERENCES `t3` (`a`)) +insert into t2 values(1); +insert into t4 values(1); +update t1 set a=2; +ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `t2_ibfk_1` FOREIGN KEY (`a`) REFERENCES `t1` (`a`)) +update t2 set a=2; +ERROR 23000: Cannot add or update a child row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `t2_ibfk_1` FOREIGN KEY (`a`) REFERENCES `t1` (`a`)) +update t3 set a=2; +ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails (`test`.`t4`, CONSTRAINT `t4_ibfk_1` FOREIGN KEY (`a`) REFERENCES `t3` (`a`)) +update t4 set a=2; +ERROR 23000: Cannot add or update a child row: a foreign key constraint fails (`test`.`t4`, CONSTRAINT `t4_ibfk_1` FOREIGN KEY (`a`) REFERENCES `t3` (`a`)) +truncate t1; +ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `t2_ibfk_1` FOREIGN KEY (`a`) REFERENCES `t1` (`a`)) +truncate t3; +ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails (`test`.`t4`, CONSTRAINT `t4_ibfk_1` FOREIGN KEY (`a`) REFERENCES `t3` (`a`)) +truncate t2; +truncate t4; +truncate t1; +truncate t3; +drop table t4,t3,t2,t1; +create table t1 (a varchar(255) character set utf8, +b varchar(255) character set utf8, +c varchar(255) character set utf8, +d varchar(255) character set utf8, +key (a,b,c,d)) engine=innodb; +drop table t1; +create table t1 (a varchar(255) character set utf8, +b varchar(255) character set utf8, +c varchar(255) character set utf8, +d varchar(255) character set utf8, +e varchar(255) character set utf8, +key (a,b,c,d,e)) engine=innodb; +ERROR 42000: Specified key was too long; max key length is 3072 bytes +create table t1 (s1 varbinary(2),primary key (s1)) engine=innodb; +create table t2 (s1 binary(2),primary key (s1)) engine=innodb; +create table t3 (s1 varchar(2) binary,primary key (s1)) engine=innodb; +create table t4 (s1 char(2) binary,primary key (s1)) engine=innodb; +insert into t1 values (0x41),(0x4120),(0x4100); +insert into t2 values (0x41),(0x4120),(0x4100); +ERROR 23000: Duplicate entry 'A' for key 'PRIMARY' +insert into t2 values (0x41),(0x4120); +insert into t3 values (0x41),(0x4120),(0x4100); +ERROR 23000: Duplicate entry 'A ' for key 'PRIMARY' +insert into t3 values (0x41),(0x4100); +insert into t4 values (0x41),(0x4120),(0x4100); +ERROR 23000: Duplicate entry 'A' for key 'PRIMARY' +insert into t4 values (0x41),(0x4100); +select hex(s1) from t1; +hex(s1) +41 +4100 +4120 +select hex(s1) from t2; +hex(s1) +4100 +4120 +select hex(s1) from t3; +hex(s1) +4100 +41 +select hex(s1) from t4; +hex(s1) +4100 +41 +drop table t1,t2,t3,t4; +create table t1 (a int primary key,s1 varbinary(3) not null unique) engine=innodb; +create table t2 (s1 binary(2) not null, constraint c foreign key(s1) references t1(s1) on update cascade) engine=innodb; +insert into t1 values(1,0x4100),(2,0x41),(3,0x4120),(4,0x42); +insert into t2 values(0x42); +ERROR 23000: Cannot add or update a child row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `c` FOREIGN KEY (`s1`) REFERENCES `t1` (`s1`) ON UPDATE CASCADE) +insert into t2 values(0x41); +select hex(s1) from t2; +hex(s1) +4100 +update t1 set s1=0x123456 where a=2; +select hex(s1) from t2; +hex(s1) +4100 +update t1 set s1=0x12 where a=1; +ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `c` FOREIGN KEY (`s1`) REFERENCES `t1` (`s1`) ON UPDATE CASCADE) +update t1 set s1=0x12345678 where a=1; +ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `c` FOREIGN KEY (`s1`) REFERENCES `t1` (`s1`) ON UPDATE CASCADE) +update t1 set s1=0x123457 where a=1; +ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `c` FOREIGN KEY (`s1`) REFERENCES `t1` (`s1`) ON UPDATE CASCADE) +update t1 set s1=0x1220 where a=1; +select hex(s1) from t2; +hex(s1) +1220 +update t1 set s1=0x1200 where a=1; +select hex(s1) from t2; +hex(s1) +1200 +update t1 set s1=0x4200 where a=1; +select hex(s1) from t2; +hex(s1) +4200 +delete from t1 where a=1; +ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `c` FOREIGN KEY (`s1`) REFERENCES `t1` (`s1`) ON UPDATE CASCADE) +delete from t1 where a=2; +update t2 set s1=0x4120; +delete from t1; +ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `c` FOREIGN KEY (`s1`) REFERENCES `t1` (`s1`) ON UPDATE CASCADE) +delete from t1 where a!=3; +select a,hex(s1) from t1; +a hex(s1) +3 4120 +select hex(s1) from t2; +hex(s1) +4120 +drop table t2,t1; +create table t1 (a int primary key,s1 varchar(2) binary not null unique) engine=innodb; +create table t2 (s1 char(2) binary not null, constraint c foreign key(s1) references t1(s1) on update cascade) engine=innodb; +insert into t1 values(1,0x4100),(2,0x41); +insert into t2 values(0x41); +select hex(s1) from t2; +hex(s1) +41 +update t1 set s1=0x1234 where a=1; +select hex(s1) from t2; +hex(s1) +41 +update t1 set s1=0x12 where a=2; +select hex(s1) from t2; +hex(s1) +12 +delete from t1 where a=1; +delete from t1 where a=2; +ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `c` FOREIGN KEY (`s1`) REFERENCES `t1` (`s1`) ON UPDATE CASCADE) +select a,hex(s1) from t1; +a hex(s1) +2 12 +select hex(s1) from t2; +hex(s1) +12 +drop table t2,t1; +CREATE TABLE t1(a INT, PRIMARY KEY(a)) ENGINE=InnoDB; +CREATE TABLE t2(a INT) ENGINE=InnoDB; +ALTER TABLE t2 ADD FOREIGN KEY (a) REFERENCES t1(a); +ALTER TABLE t2 DROP FOREIGN KEY t2_ibfk_1; +ALTER TABLE t2 ADD CONSTRAINT t2_ibfk_0 FOREIGN KEY (a) REFERENCES t1(a); +ALTER TABLE t2 DROP FOREIGN KEY t2_ibfk_0; +SHOW CREATE TABLE t2; +Table Create Table +t2 CREATE TABLE `t2` ( + `a` int(11) DEFAULT NULL, + KEY `t2_ibfk_0` (`a`) +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +DROP TABLE t2,t1; +create table t1(a int not null, b int, c int, d int, primary key(a)) engine=innodb; +insert into t1(a) values (1),(2),(3); +commit; +set autocommit = 0; +update t1 set b = 5 where a = 2; +create trigger t1t before insert on t1 for each row begin set NEW.b = NEW.a * 10 + 5, NEW.c = NEW.a / 10; end | +set autocommit = 0; +insert into t1(a) values (10),(20),(30),(40),(50),(60),(70),(80),(90),(100), +(11),(21),(31),(41),(51),(61),(71),(81),(91),(101), +(12),(22),(32),(42),(52),(62),(72),(82),(92),(102), +(13),(23),(33),(43),(53),(63),(73),(83),(93),(103), +(14),(24),(34),(44),(54),(64),(74),(84),(94),(104); +commit; +commit; +drop trigger t1t; +drop table t1; +create table t1(a int not null, b int, c int, d int, primary key(a)) engine=innodb; +create table t2(a int not null, b int, c int, d int, primary key(a)) engine=innodb; +create table t3(a int not null, b int, c int, d int, primary key(a)) engine=innodb; +create table t4(a int not null, b int, c int, d int, primary key(a)) engine=innodb; +create table t5(a int not null, b int, c int, d int, primary key(a)) engine=innodb; +insert into t1(a) values (1),(2),(3); +insert into t2(a) values (1),(2),(3); +insert into t3(a) values (1),(2),(3); +insert into t4(a) values (1),(2),(3); +insert into t3(a) values (5),(7),(8); +insert into t4(a) values (5),(7),(8); +insert into t5(a) values (1),(2),(3),(4),(5),(6),(7),(8),(9),(10),(11),(12); +create trigger t1t before insert on t1 for each row begin +INSERT INTO t2 SET a = NEW.a; +end | +create trigger t2t before insert on t2 for each row begin +DELETE FROM t3 WHERE a = NEW.a; +end | +create trigger t3t before delete on t3 for each row begin +UPDATE t4 SET b = b + 1 WHERE a = OLD.a; +end | +create trigger t4t before update on t4 for each row begin +UPDATE t5 SET b = b + 1 where a = NEW.a; +end | +commit; +set autocommit = 0; +update t1 set b = b + 5 where a = 1; +update t2 set b = b + 5 where a = 1; +update t3 set b = b + 5 where a = 1; +update t4 set b = b + 5 where a = 1; +insert into t5(a) values(20); +set autocommit = 0; +insert into t1(a) values(7); +insert into t2(a) values(8); +delete from t2 where a = 3; +update t4 set b = b + 1 where a = 3; +commit; +drop trigger t1t; +drop trigger t2t; +drop trigger t3t; +drop trigger t4t; +drop table t1, t2, t3, t4, t5; +CREATE TABLE t1 ( +field1 varchar(8) NOT NULL DEFAULT '', +field2 varchar(8) NOT NULL DEFAULT '', +PRIMARY KEY (field1, field2) +) ENGINE=InnoDB; +CREATE TABLE t2 ( +field1 varchar(8) NOT NULL DEFAULT '' PRIMARY KEY, +FOREIGN KEY (field1) REFERENCES t1 (field1) +ON DELETE CASCADE ON UPDATE CASCADE +) ENGINE=InnoDB; +INSERT INTO t1 VALUES ('old', 'somevalu'); +INSERT INTO t1 VALUES ('other', 'anyvalue'); +INSERT INTO t2 VALUES ('old'); +INSERT INTO t2 VALUES ('other'); +UPDATE t1 SET field1 = 'other' WHERE field2 = 'somevalu'; +ERROR 23000: Upholding foreign key constraints for table 't1', entry 'other-somevalu', key 1 would lead to a duplicate entry +DROP TABLE t2; +DROP TABLE t1; +create table t1 ( +c1 bigint not null, +c2 bigint not null, +primary key (c1), +unique key (c2) +) engine=innodb; +create table t2 ( +c1 bigint not null, +primary key (c1) +) engine=innodb; +alter table t1 add constraint c2_fk foreign key (c2) +references t2(c1) on delete cascade; +show create table t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `c1` bigint(20) NOT NULL, + `c2` bigint(20) NOT NULL, + PRIMARY KEY (`c1`), + UNIQUE KEY `c2` (`c2`), + CONSTRAINT `c2_fk` FOREIGN KEY (`c2`) REFERENCES `t2` (`c1`) ON DELETE CASCADE +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +alter table t1 drop foreign key c2_fk; +show create table t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `c1` bigint(20) NOT NULL, + `c2` bigint(20) NOT NULL, + PRIMARY KEY (`c1`), + UNIQUE KEY `c2` (`c2`) +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +drop table t1, t2; +create table t1(a date) engine=innodb; +create table t2(a date, key(a)) engine=innodb; +insert into t1 values('2005-10-01'); +insert into t2 values('2005-10-01'); +select * from t1, t2 +where t2.a between t1.a - interval 2 day and t1.a + interval 2 day; +a a +2005-10-01 2005-10-01 +drop table t1, t2; +create table t1 (id int not null, f_id int not null, f int not null, +primary key(f_id, id)) engine=innodb; +create table t2 (id int not null,s_id int not null,s varchar(200), +primary key(id)) engine=innodb; +INSERT INTO t1 VALUES (8, 1, 3); +INSERT INTO t1 VALUES (1, 2, 1); +INSERT INTO t2 VALUES (1, 0, ''); +INSERT INTO t2 VALUES (8, 1, ''); +commit; +DELETE ml.* FROM t1 AS ml LEFT JOIN t2 AS mm ON (mm.id=ml.id) +WHERE mm.id IS NULL; +select ml.* from t1 as ml left join t2 as mm on (mm.id=ml.id) +where mm.id is null lock in share mode; +id f_id f +drop table t1,t2; +create table t1(a int not null, b int, primary key(a)) engine=innodb; +insert into t1 values(1,1),(2,2),(3,1),(4,2),(5,1),(6,2),(7,3); +commit; +SET binlog_format='MIXED'; +set autocommit = 0; +SET SESSION TRANSACTION ISOLATION LEVEL READ COMMITTED; +update t1 set b = 5 where b = 1; +SET binlog_format='MIXED'; +set autocommit = 0; +SET SESSION TRANSACTION ISOLATION LEVEL READ COMMITTED; +select * from t1 where a = 7 and b = 3 for update; +a b +7 3 +commit; +commit; +drop table t1; +create table t1(a int not null, b int, primary key(a)) engine=innodb; +insert into t1 values(1,1),(2,2),(3,1),(4,2),(5,1),(6,2); +commit; +set autocommit = 0; +select * from t1 lock in share mode; +a b +1 1 +2 2 +3 1 +4 2 +5 1 +6 2 +update t1 set b = 5 where b = 1; +set autocommit = 0; +select * from t1 where a = 2 and b = 2 for update; +ERROR HY000: Lock wait timeout exceeded; try restarting transaction +commit; +commit; +drop table t1; +create table t1(a int not null, b int, primary key(a)) engine=innodb; +insert into t1 values (1,2),(5,3),(4,2); +create table t2(d int not null, e int, primary key(d)) engine=innodb; +insert into t2 values (8,6),(12,1),(3,1); +commit; +set autocommit = 0; +select * from t2 for update; +d e +3 1 +8 6 +12 1 +SET binlog_format='MIXED'; +set autocommit = 0; +SET SESSION TRANSACTION ISOLATION LEVEL READ COMMITTED; +insert into t1 select * from t2; +update t1 set b = (select e from t2 where a = d); +create table t3(d int not null, e int, primary key(d)) engine=innodb +select * from t2; +commit; +commit; +drop table t1, t2, t3; +create table t1(a int not null, b int, primary key(a)) engine=innodb; +insert into t1 values (1,2),(5,3),(4,2); +create table t2(a int not null, b int, primary key(a)) engine=innodb; +insert into t2 values (8,6),(12,1),(3,1); +create table t3(d int not null, b int, primary key(d)) engine=innodb; +insert into t3 values (8,6),(12,1),(3,1); +create table t5(a int not null, b int, primary key(a)) engine=innodb; +insert into t5 values (1,2),(5,3),(4,2); +create table t6(d int not null, e int, primary key(d)) engine=innodb; +insert into t6 values (8,6),(12,1),(3,1); +create table t8(a int not null, b int, primary key(a)) engine=innodb; +insert into t8 values (1,2),(5,3),(4,2); +create table t9(d int not null, e int, primary key(d)) engine=innodb; +insert into t9 values (8,6),(12,1),(3,1); +commit; +set autocommit = 0; +select * from t2 for update; +a b +3 1 +8 6 +12 1 +SET binlog_format='MIXED'; +set autocommit = 0; +SET SESSION TRANSACTION ISOLATION LEVEL SERIALIZABLE; +insert into t1 select * from t2; +SET binlog_format='MIXED'; +set autocommit = 0; +SET SESSION TRANSACTION ISOLATION LEVEL SERIALIZABLE; +update t3 set b = (select b from t2 where a = d); +SET binlog_format='MIXED'; +set autocommit = 0; +SET SESSION TRANSACTION ISOLATION LEVEL SERIALIZABLE; +create table t4(a int not null, b int, primary key(a)) engine=innodb select * from t2; +SET binlog_format='MIXED'; +set autocommit = 0; +SET SESSION TRANSACTION ISOLATION LEVEL READ COMMITTED; +insert into t5 (select * from t2 lock in share mode); +SET binlog_format='MIXED'; +set autocommit = 0; +SET SESSION TRANSACTION ISOLATION LEVEL READ COMMITTED; +update t6 set e = (select b from t2 where a = d lock in share mode); +SET binlog_format='MIXED'; +set autocommit = 0; +SET SESSION TRANSACTION ISOLATION LEVEL READ COMMITTED; +create table t7(a int not null, b int, primary key(a)) engine=innodb select * from t2 lock in share mode; +SET binlog_format='MIXED'; +set autocommit = 0; +SET SESSION TRANSACTION ISOLATION LEVEL READ COMMITTED; +insert into t8 (select * from t2 for update); +SET binlog_format='MIXED'; +set autocommit = 0; +SET SESSION TRANSACTION ISOLATION LEVEL READ COMMITTED; +update t9 set e = (select b from t2 where a = d for update); +SET binlog_format='MIXED'; +set autocommit = 0; +SET SESSION TRANSACTION ISOLATION LEVEL READ COMMITTED; +create table t10(a int not null, b int, primary key(a)) engine=innodb select * from t2 for update; +ERROR HY000: Lock wait timeout exceeded; try restarting transaction +ERROR HY000: Lock wait timeout exceeded; try restarting transaction +ERROR HY000: Lock wait timeout exceeded; try restarting transaction +ERROR HY000: Lock wait timeout exceeded; try restarting transaction +ERROR HY000: Lock wait timeout exceeded; try restarting transaction +ERROR HY000: Lock wait timeout exceeded; try restarting transaction +ERROR HY000: Lock wait timeout exceeded; try restarting transaction +ERROR HY000: Lock wait timeout exceeded; try restarting transaction +ERROR HY000: Lock wait timeout exceeded; try restarting transaction +commit; +drop table t1, t2, t3, t5, t6, t8, t9; +CREATE TABLE t1 (DB_ROW_ID int) engine=innodb; +ERROR HY000: Can't create table 'test.t1' (errno: -1) +CREATE TABLE t1 ( +a BIGINT(20) NOT NULL, +PRIMARY KEY (a) +) ENGINE=INNODB DEFAULT CHARSET=UTF8; +CREATE TABLE t2 ( +a BIGINT(20) NOT NULL, +b VARCHAR(128) NOT NULL, +c TEXT NOT NULL, +PRIMARY KEY (a,b), +KEY idx_t2_b_c (b,c(200)), +CONSTRAINT t_fk FOREIGN KEY (a) REFERENCES t1 (a) +ON DELETE CASCADE +) ENGINE=INNODB DEFAULT CHARSET=UTF8; +INSERT INTO t1 VALUES (1); +INSERT INTO t2 VALUES (1, 'bar', 'vbar'); +INSERT INTO t2 VALUES (1, 'BAR2', 'VBAR'); +INSERT INTO t2 VALUES (1, 'bar_bar', 'bibi'); +INSERT INTO t2 VALUES (1, 'customer_over', '1'); +SELECT * FROM t2 WHERE b = 'customer_over'; +a b c +1 customer_over 1 +SELECT * FROM t2 WHERE BINARY b = 'customer_over'; +a b c +1 customer_over 1 +SELECT DISTINCT p0.a FROM t2 p0 WHERE p0.b = 'customer_over'; +a +1 +/* Bang: Empty result set, above was expected: */ +SELECT DISTINCT p0.a FROM t2 p0 WHERE BINARY p0.b = 'customer_over'; +a +1 +SELECT p0.a FROM t2 p0 WHERE BINARY p0.b = 'customer_over'; +a +1 +drop table t2, t1; +CREATE TABLE t1 ( a int ) ENGINE=innodb; +BEGIN; +INSERT INTO t1 VALUES (1); +OPTIMIZE TABLE t1; +Table Op Msg_type Msg_text +test.t1 optimize note Table does not support optimize, doing recreate + analyze instead +test.t1 optimize status OK +DROP TABLE t1; +CREATE TABLE t1 (id int PRIMARY KEY, f int NOT NULL, INDEX(f)) ENGINE=InnoDB; +CREATE TABLE t2 (id int PRIMARY KEY, f INT NOT NULL, +CONSTRAINT t2_t1 FOREIGN KEY (id) REFERENCES t1 (id) +ON DELETE CASCADE ON UPDATE CASCADE) ENGINE=InnoDB; +ALTER TABLE t2 ADD FOREIGN KEY (f) REFERENCES t1 (f) ON +DELETE CASCADE ON UPDATE CASCADE; +SHOW CREATE TABLE t2; +Table Create Table +t2 CREATE TABLE `t2` ( + `id` int(11) NOT NULL, + `f` int(11) NOT NULL, + PRIMARY KEY (`id`), + KEY `f` (`f`), + CONSTRAINT `t2_ibfk_1` FOREIGN KEY (`f`) REFERENCES `t1` (`f`) ON DELETE CASCADE ON UPDATE CASCADE, + CONSTRAINT `t2_t1` FOREIGN KEY (`id`) REFERENCES `t1` (`id`) ON DELETE CASCADE ON UPDATE CASCADE +) ENGINE=InnoDB DEFAULT CHARSET=latin1 +DROP TABLE t2, t1; +CREATE TABLE t1 (a INT, INDEX(a)) ENGINE=InnoDB; +CREATE TABLE t2 (a INT, INDEX(a)) ENGINE=InnoDB; +INSERT INTO t1 VALUES (1); +INSERT INTO t2 VALUES (1); +ALTER TABLE t2 ADD FOREIGN KEY (a) REFERENCES t1 (a) ON DELETE SET NULL; +ALTER TABLE t2 MODIFY a INT NOT NULL; +ERROR HY000: Error on rename of '#sql-temporary' to './test/t2' (errno: 150) +DELETE FROM t1; +DROP TABLE t2,t1; +CREATE TABLE t1 (a VARCHAR(5) COLLATE utf8_unicode_ci PRIMARY KEY) +ENGINE=InnoDB; +INSERT INTO t1 VALUES (0xEFBCA4EFBCA4EFBCA4); +DELETE FROM t1; +INSERT INTO t1 VALUES ('DDD'); +SELECT * FROM t1; +a +DDD +DROP TABLE t1; +CREATE TABLE t1 (id int PRIMARY KEY AUTO_INCREMENT) ENGINE=InnoDB +AUTO_INCREMENT=42; +INSERT INTO t1 VALUES (0),(347),(0); +SELECT * FROM t1; +id +42 +347 +348 +SHOW CREATE TABLE t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `id` int(11) NOT NULL AUTO_INCREMENT, + PRIMARY KEY (`id`) +) ENGINE=InnoDB AUTO_INCREMENT=349 DEFAULT CHARSET=latin1 +CREATE TABLE t2 (id int PRIMARY KEY) ENGINE=InnoDB; +INSERT INTO t2 VALUES(42),(347),(348); +ALTER TABLE t1 ADD CONSTRAINT t1_t2 FOREIGN KEY (id) REFERENCES t2(id); +SHOW CREATE TABLE t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `id` int(11) NOT NULL AUTO_INCREMENT, + PRIMARY KEY (`id`), + CONSTRAINT `t1_t2` FOREIGN KEY (`id`) REFERENCES `t2` (`id`) +) ENGINE=InnoDB AUTO_INCREMENT=349 DEFAULT CHARSET=latin1 +DROP TABLE t1,t2; +set innodb_strict_mode=on; +CREATE TABLE t1 ( +c01 CHAR(255), c02 CHAR(255), c03 CHAR(255), c04 CHAR(255), +c05 CHAR(255), c06 CHAR(255), c07 CHAR(255), c08 CHAR(255), +c09 CHAR(255), c10 CHAR(255), c11 CHAR(255), c12 CHAR(255), +c13 CHAR(255), c14 CHAR(255), c15 CHAR(255), c16 CHAR(255), +c17 CHAR(255), c18 CHAR(255), c19 CHAR(255), c20 CHAR(255), +c21 CHAR(255), c22 CHAR(255), c23 CHAR(255), c24 CHAR(255), +c25 CHAR(255), c26 CHAR(255), c27 CHAR(255), c28 CHAR(255), +c29 CHAR(255), c30 CHAR(255), c31 CHAR(255), c32 CHAR(255) +) ENGINE = InnoDB; +ERROR 42000: Row size too large. The maximum row size for the used table type, not counting BLOBs, is 8126. You have to change some columns to TEXT or BLOBs +DROP TABLE IF EXISTS t1; +Warnings: +Note 1051 Unknown table 't1' +CREATE TABLE t1( +id BIGINT(20) NOT NULL AUTO_INCREMENT PRIMARY KEY +) ENGINE=InnoDB; +INSERT INTO t1 VALUES(-10); +SELECT * FROM t1; +id +-10 +INSERT INTO t1 VALUES(NULL); +SELECT * FROM t1; +id +-10 +1 +DROP TABLE t1; +SET binlog_format='MIXED'; +SET TX_ISOLATION='read-committed'; +SET AUTOCOMMIT=0; +DROP TABLE IF EXISTS t1, t2; +Warnings: +Note 1051 Unknown table 't1' +Note 1051 Unknown table 't2' +CREATE TABLE t1 ( a int ) ENGINE=InnoDB; +CREATE TABLE t2 LIKE t1; +SELECT * FROM t2; +a +SET binlog_format='MIXED'; +SET TX_ISOLATION='read-committed'; +SET AUTOCOMMIT=0; +INSERT INTO t1 VALUES (1); +COMMIT; +SELECT * FROM t1 WHERE a=1; +a +1 +SET binlog_format='MIXED'; +SET TX_ISOLATION='read-committed'; +SET AUTOCOMMIT=0; +SELECT * FROM t2; +a +SET binlog_format='MIXED'; +SET TX_ISOLATION='read-committed'; +SET AUTOCOMMIT=0; +INSERT INTO t1 VALUES (2); +COMMIT; +SELECT * FROM t1 WHERE a=2; +a +2 +SELECT * FROM t1 WHERE a=2; +a +2 +DROP TABLE t1; +DROP TABLE t2; +create table t1 (i int, j int) engine=innodb; +insert into t1 (i, j) values (1, 1), (2, 2); +update t1 set j = 2; +affected rows: 1 +info: Rows matched: 2 Changed: 1 Warnings: 0 +drop table t1; +create table t1 (id int) comment='this is a comment' engine=innodb; +select table_comment, data_free > 0 as data_free_is_set +from information_schema.tables +where table_schema='test' and table_name = 't1'; +table_comment data_free_is_set +this is a comment 1 +drop table t1; +CREATE TABLE t1 ( +c1 INT(10) UNSIGNED NOT NULL AUTO_INCREMENT, +c2 VARCHAR(128) NOT NULL, +PRIMARY KEY(c1) +) ENGINE=InnoDB DEFAULT CHARSET=utf8 AUTO_INCREMENT=100; +CREATE TABLE t2 ( +c1 INT(10) UNSIGNED NOT NULL AUTO_INCREMENT, +c2 INT(10) UNSIGNED DEFAULT NULL, +PRIMARY KEY(c1) +) ENGINE=InnoDB DEFAULT CHARSET=utf8 AUTO_INCREMENT=200; +SELECT AUTO_INCREMENT FROM INFORMATION_SCHEMA.TABLES WHERE table_name = 't2'; +AUTO_INCREMENT +200 +ALTER TABLE t2 ADD CONSTRAINT t1_t2_1 FOREIGN KEY(c1) REFERENCES t1(c1); +SELECT AUTO_INCREMENT FROM INFORMATION_SCHEMA.TABLES WHERE table_name = 't2'; +AUTO_INCREMENT +200 +DROP TABLE t2; +DROP TABLE t1; +CREATE TABLE t1 (c1 int default NULL, +c2 int default NULL +) ENGINE=InnoDB DEFAULT CHARSET=latin1; +TRUNCATE TABLE t1; +affected rows: 0 +INSERT INTO t1 VALUES (1, 1), (2, 2), (3, 3), (4, 4), (5, 5); +affected rows: 5 +info: Records: 5 Duplicates: 0 Warnings: 0 +TRUNCATE TABLE t1; +affected rows: 0 +DROP TABLE t1; +Variable_name Value +Handler_update 0 +Variable_name Value +Handler_delete 0 +Variable_name Value +Handler_update 1 +Variable_name Value +Handler_delete 1 === removed file 'mysql-test/r/innodb.result' --- a/mysql-test/r/innodb.result 2009-02-19 09:01:25 +0000 +++ b/mysql-test/r/innodb.result 1970-01-01 00:00:00 +0000 @@ -1,3307 +0,0 @@ -drop table if exists t1,t2,t3,t4; -drop database if exists mysqltest; -create table t1 (id int unsigned not null auto_increment, code tinyint unsigned not null, name char(20) not null, primary key (id), key (code), unique (name)) engine=innodb; -insert into t1 (code, name) values (1, 'Tim'), (1, 'Monty'), (2, 'David'), (2, 'Erik'), (3, 'Sasha'), (3, 'Jeremy'), (4, 'Matt'); -select id, code, name from t1 order by id; -id code name -1 1 Tim -2 1 Monty -3 2 David -4 2 Erik -5 3 Sasha -6 3 Jeremy -7 4 Matt -update ignore t1 set id = 8, name = 'Sinisa' where id < 3; -select id, code, name from t1 order by id; -id code name -2 1 Monty -3 2 David -4 2 Erik -5 3 Sasha -6 3 Jeremy -7 4 Matt -8 1 Sinisa -update ignore t1 set id = id + 10, name = 'Ralph' where id < 4; -select id, code, name from t1 order by id; -id code name -3 2 David -4 2 Erik -5 3 Sasha -6 3 Jeremy -7 4 Matt -8 1 Sinisa -12 1 Ralph -drop table t1; -CREATE TABLE t1 ( -id int(11) NOT NULL auto_increment, -parent_id int(11) DEFAULT '0' NOT NULL, -level tinyint(4) DEFAULT '0' NOT NULL, -PRIMARY KEY (id), -KEY parent_id (parent_id), -KEY level (level) -) engine=innodb; -INSERT INTO t1 VALUES (1,0,0),(3,1,1),(4,1,1),(8,2,2),(9,2,2),(17,3,2),(22,4,2),(24,4,2),(28,5,2),(29,5,2),(30,5,2),(31,6,2),(32,6,2),(33,6,2),(203,7,2),(202,7,2),(20,3,2),(157,0,0),(193,5,2),(40,7,2),(2,1,1),(15,2,2),(6,1,1),(34,6,2),(35,6,2),(16,3,2),(7,1,1),(36,7,2),(18,3,2),(26,5,2),(27,5,2),(183,4,2),(38,7,2),(25,5,2),(37,7,2),(21,4,2),(19,3,2),(5,1,1),(179,5,2); -update t1 set parent_id=parent_id+100; -select * from t1 where parent_id=102; -id parent_id level -8 102 2 -9 102 2 -15 102 2 -update t1 set id=id+1000; -update t1 set id=1024 where id=1009; -Got one of the listed errors -select * from t1; -id parent_id level -1001 100 0 -1002 101 1 -1003 101 1 -1004 101 1 -1005 101 1 -1006 101 1 -1007 101 1 -1008 102 2 -1009 102 2 -1015 102 2 -1016 103 2 -1017 103 2 -1018 103 2 -1019 103 2 -1020 103 2 -1021 104 2 -1022 104 2 -1024 104 2 -1025 105 2 -1026 105 2 -1027 105 2 -1028 105 2 -1029 105 2 -1030 105 2 -1031 106 2 -1032 106 2 -1033 106 2 -1034 106 2 -1035 106 2 -1036 107 2 -1037 107 2 -1038 107 2 -1040 107 2 -1157 100 0 -1179 105 2 -1183 104 2 -1193 105 2 -1202 107 2 -1203 107 2 -update ignore t1 set id=id+1; -select * from t1; -id parent_id level -1001 100 0 -1002 101 1 -1003 101 1 -1004 101 1 -1005 101 1 -1006 101 1 -1007 101 1 -1008 102 2 -1010 102 2 -1015 102 2 -1016 103 2 -1017 103 2 -1018 103 2 -1019 103 2 -1020 103 2 -1021 104 2 -1023 104 2 -1024 104 2 -1025 105 2 -1026 105 2 -1027 105 2 -1028 105 2 -1029 105 2 -1030 105 2 -1031 106 2 -1032 106 2 -1033 106 2 -1034 106 2 -1035 106 2 -1036 107 2 -1037 107 2 -1039 107 2 -1041 107 2 -1158 100 0 -1180 105 2 -1184 104 2 -1194 105 2 -1202 107 2 -1204 107 2 -update ignore t1 set id=1023 where id=1010; -select * from t1 where parent_id=102; -id parent_id level -1008 102 2 -1010 102 2 -1015 102 2 -explain select level from t1 where level=1; -id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ref level level 1 const # Using index -explain select level,id from t1 where level=1; -id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ref level level 1 const # Using index -explain select level,id,parent_id from t1 where level=1; -id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ref level level 1 const # -select level,id from t1 where level=1; -level id -1 1002 -1 1003 -1 1004 -1 1005 -1 1006 -1 1007 -select level,id,parent_id from t1 where level=1; -level id parent_id -1 1002 101 -1 1003 101 -1 1004 101 -1 1005 101 -1 1006 101 -1 1007 101 -optimize table t1; -Table Op Msg_type Msg_text -test.t1 optimize note Table does not support optimize, doing recreate + analyze instead -test.t1 optimize status OK -show keys from t1; -Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment -t1 0 PRIMARY 1 id A # NULL NULL BTREE -t1 1 parent_id 1 parent_id A # NULL NULL BTREE -t1 1 level 1 level A # NULL NULL BTREE -drop table t1; -CREATE TABLE t1 ( -gesuchnr int(11) DEFAULT '0' NOT NULL, -benutzer_id int(11) DEFAULT '0' NOT NULL, -PRIMARY KEY (gesuchnr,benutzer_id) -) engine=innodb; -replace into t1 (gesuchnr,benutzer_id) values (2,1); -replace into t1 (gesuchnr,benutzer_id) values (1,1); -replace into t1 (gesuchnr,benutzer_id) values (1,1); -select * from t1; -gesuchnr benutzer_id -1 1 -2 1 -drop table t1; -create table t1 (a int) engine=innodb; -insert into t1 values (1), (2); -optimize table t1; -Table Op Msg_type Msg_text -test.t1 optimize note Table does not support optimize, doing recreate + analyze instead -test.t1 optimize status OK -delete from t1 where a = 1; -select * from t1; -a -2 -check table t1; -Table Op Msg_type Msg_text -test.t1 check status OK -drop table t1; -create table t1 (a int,b varchar(20)) engine=innodb; -insert into t1 values (1,""), (2,"testing"); -delete from t1 where a = 1; -select * from t1; -a b -2 testing -create index skr on t1 (a); -insert into t1 values (3,""), (4,"testing"); -analyze table t1; -Table Op Msg_type Msg_text -test.t1 analyze status OK -show keys from t1; -Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment -t1 1 skr 1 a A # NULL NULL YES BTREE -drop table t1; -create table t1 (a int,b varchar(20),key(a)) engine=innodb; -insert into t1 values (1,""), (2,"testing"); -select * from t1 where a = 1; -a b -1 -drop table t1; -create table t1 (n int not null primary key) engine=innodb; -set autocommit=0; -insert into t1 values (4); -rollback; -select n, "after rollback" from t1; -n after rollback -insert into t1 values (4); -commit; -select n, "after commit" from t1; -n after commit -4 after commit -commit; -insert into t1 values (5); -insert into t1 values (4); -ERROR 23000: Duplicate entry '4' for key 'PRIMARY' -commit; -select n, "after commit" from t1; -n after commit -4 after commit -5 after commit -set autocommit=1; -insert into t1 values (6); -insert into t1 values (4); -ERROR 23000: Duplicate entry '4' for key 'PRIMARY' -select n from t1; -n -4 -5 -6 -set autocommit=0; -begin; -savepoint `my_savepoint`; -insert into t1 values (7); -savepoint `savept2`; -insert into t1 values (3); -select n from t1; -n -3 -4 -5 -6 -7 -savepoint savept3; -rollback to savepoint savept2; -rollback to savepoint savept3; -ERROR 42000: SAVEPOINT savept3 does not exist -rollback to savepoint savept2; -release savepoint `my_savepoint`; -select n from t1; -n -4 -5 -6 -7 -rollback to savepoint `my_savepoint`; -ERROR 42000: SAVEPOINT my_savepoint does not exist -rollback to savepoint savept2; -ERROR 42000: SAVEPOINT savept2 does not exist -insert into t1 values (8); -savepoint sv; -commit; -savepoint sv; -set autocommit=1; -rollback; -drop table t1; -create table t1 (n int not null primary key) engine=innodb; -start transaction; -insert into t1 values (4); -flush tables with read lock; -commit; -unlock tables; -commit; -select * from t1; -n -4 -drop table t1; -create table t1 ( id int NOT NULL PRIMARY KEY, nom varchar(64)) engine=innodb; -begin; -insert into t1 values(1,'hamdouni'); -select id as afterbegin_id,nom as afterbegin_nom from t1; -afterbegin_id afterbegin_nom -1 hamdouni -rollback; -select id as afterrollback_id,nom as afterrollback_nom from t1; -afterrollback_id afterrollback_nom -set autocommit=0; -insert into t1 values(2,'mysql'); -select id as afterautocommit0_id,nom as afterautocommit0_nom from t1; -afterautocommit0_id afterautocommit0_nom -2 mysql -rollback; -select id as afterrollback_id,nom as afterrollback_nom from t1; -afterrollback_id afterrollback_nom -set autocommit=1; -drop table t1; -CREATE TABLE t1 (id char(8) not null primary key, val int not null) engine=innodb; -insert into t1 values ('pippo', 12); -insert into t1 values ('pippo', 12); -ERROR 23000: Duplicate entry 'pippo' for key 'PRIMARY' -delete from t1; -delete from t1 where id = 'pippo'; -select * from t1; -id val -insert into t1 values ('pippo', 12); -set autocommit=0; -delete from t1; -rollback; -select * from t1; -id val -pippo 12 -delete from t1; -commit; -select * from t1; -id val -drop table t1; -create table t1 (a integer) engine=innodb; -start transaction; -rename table t1 to t2; -create table t1 (b integer) engine=innodb; -insert into t1 values (1); -rollback; -drop table t1; -rename table t2 to t1; -drop table t1; -set autocommit=1; -CREATE TABLE t1 (ID INTEGER NOT NULL PRIMARY KEY, NAME VARCHAR(64)) ENGINE=innodb; -INSERT INTO t1 VALUES (1, 'Jochen'); -select * from t1; -ID NAME -1 Jochen -drop table t1; -CREATE TABLE t1 ( _userid VARCHAR(60) NOT NULL PRIMARY KEY) ENGINE=innodb; -set autocommit=0; -INSERT INTO t1 SET _userid='marc(a)anyware.co.uk'; -COMMIT; -SELECT * FROM t1; -_userid -marc(a)anyware.co.uk -SELECT _userid FROM t1 WHERE _userid='marc(a)anyware.co.uk'; -_userid -marc(a)anyware.co.uk -drop table t1; -set autocommit=1; -CREATE TABLE t1 ( -user_id int(10) DEFAULT '0' NOT NULL, -name varchar(100), -phone varchar(100), -ref_email varchar(100) DEFAULT '' NOT NULL, -detail varchar(200), -PRIMARY KEY (user_id,ref_email) -)engine=innodb; -INSERT INTO t1 VALUES (10292,'sanjeev','29153373','sansh777(a)hotmail.com','xxx'),(10292,'shirish','2333604','shirish(a)yahoo.com','ddsds'),(10292,'sonali','323232','sonali(a)bolly.com','filmstar'); -select * from t1 where user_id=10292; -user_id name phone ref_email detail -10292 sanjeev 29153373 sansh777(a)hotmail.com xxx -10292 shirish 2333604 shirish(a)yahoo.com ddsds -10292 sonali 323232 sonali(a)bolly.com filmstar -INSERT INTO t1 VALUES (10291,'sanjeev','29153373','sansh777(a)hotmail.com','xxx'),(10293,'shirish','2333604','shirish(a)yahoo.com','ddsds'); -select * from t1 where user_id=10292; -user_id name phone ref_email detail -10292 sanjeev 29153373 sansh777(a)hotmail.com xxx -10292 shirish 2333604 shirish(a)yahoo.com ddsds -10292 sonali 323232 sonali(a)bolly.com filmstar -select * from t1 where user_id>=10292; -user_id name phone ref_email detail -10292 sanjeev 29153373 sansh777(a)hotmail.com xxx -10292 shirish 2333604 shirish(a)yahoo.com ddsds -10292 sonali 323232 sonali(a)bolly.com filmstar -10293 shirish 2333604 shirish(a)yahoo.com ddsds -select * from t1 where user_id>10292; -user_id name phone ref_email detail -10293 shirish 2333604 shirish(a)yahoo.com ddsds -select * from t1 where user_id<10292; -user_id name phone ref_email detail -10291 sanjeev 29153373 sansh777(a)hotmail.com xxx -drop table t1; -CREATE TABLE t1 (a int not null, b int not null,c int not null, -key(a),primary key(a,b), unique(c),key(a),unique(b)); -show index from t1; -Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment -t1 0 PRIMARY 1 a A # NULL NULL BTREE -t1 0 PRIMARY 2 b A # NULL NULL BTREE -t1 0 c 1 c A # NULL NULL BTREE -t1 0 b 1 b A # NULL NULL BTREE -t1 1 a 1 a A # NULL NULL BTREE -t1 1 a_2 1 a A # NULL NULL BTREE -drop table t1; -create table t1 (col1 int not null, col2 char(4) not null, primary key(col1)); -alter table t1 engine=innodb; -insert into t1 values ('1','1'),('5','2'),('2','3'),('3','4'),('4','4'); -select * from t1; -col1 col2 -1 1 -2 3 -3 4 -4 4 -5 2 -update t1 set col2='7' where col1='4'; -select * from t1; -col1 col2 -1 1 -2 3 -3 4 -4 7 -5 2 -alter table t1 add co3 int not null; -select * from t1; -col1 col2 co3 -1 1 0 -2 3 0 -3 4 0 -4 7 0 -5 2 0 -update t1 set col2='9' where col1='2'; -select * from t1; -col1 col2 co3 -1 1 0 -2 9 0 -3 4 0 -4 7 0 -5 2 0 -drop table t1; -create table t1 (a int not null , b int, primary key (a)) engine = innodb; -create table t2 (a int not null , b int, primary key (a)) engine = myisam; -insert into t1 VALUES (1,3) , (2,3), (3,3); -select * from t1; -a b -1 3 -2 3 -3 3 -insert into t2 select * from t1; -select * from t2; -a b -1 3 -2 3 -3 3 -delete from t1 where b = 3; -select * from t1; -a b -insert into t1 select * from t2; -select * from t1; -a b -1 3 -2 3 -3 3 -select * from t2; -a b -1 3 -2 3 -3 3 -drop table t1,t2; -CREATE TABLE t1 ( -user_name varchar(12), -password text, -subscribed char(1), -user_id int(11) DEFAULT '0' NOT NULL, -quota bigint(20), -weight double, -access_date date, -access_time time, -approved datetime, -dummy_primary_key int(11) NOT NULL auto_increment, -PRIMARY KEY (dummy_primary_key) -) ENGINE=innodb; -INSERT INTO t1 VALUES ('user_0','somepassword','N',0,0,0,'2000-09-07','23:06:59','2000-09-07 23:06:59',1); -INSERT INTO t1 VALUES ('user_1','somepassword','Y',1,1,1,'2000-09-07','23:06:59','2000-09-07 23:06:59',2); -INSERT INTO t1 VALUES ('user_2','somepassword','N',2,2,1.4142135623731,'2000-09-07','23:06:59','2000-09-07 23:06:59',3); -INSERT INTO t1 VALUES ('user_3','somepassword','Y',3,3,1.7320508075689,'2000-09-07','23:06:59','2000-09-07 23:06:59',4); -INSERT INTO t1 VALUES ('user_4','somepassword','N',4,4,2,'2000-09-07','23:06:59','2000-09-07 23:06:59',5); -select user_name, password , subscribed, user_id, quota, weight, access_date, access_time, approved, dummy_primary_key from t1 order by user_name; -user_name password subscribed user_id quota weight access_date access_time approved dummy_primary_key -user_0 somepassword N 0 0 0 2000-09-07 23:06:59 2000-09-07 23:06:59 1 -user_1 somepassword Y 1 1 1 2000-09-07 23:06:59 2000-09-07 23:06:59 2 -user_2 somepassword N 2 2 1.4142135623731 2000-09-07 23:06:59 2000-09-07 23:06:59 3 -user_3 somepassword Y 3 3 1.7320508075689 2000-09-07 23:06:59 2000-09-07 23:06:59 4 -user_4 somepassword N 4 4 2 2000-09-07 23:06:59 2000-09-07 23:06:59 5 -drop table t1; -CREATE TABLE t1 ( -id int(11) NOT NULL auto_increment, -parent_id int(11) DEFAULT '0' NOT NULL, -level tinyint(4) DEFAULT '0' NOT NULL, -KEY (id), -KEY parent_id (parent_id), -KEY level (level) -) engine=innodb; -INSERT INTO t1 VALUES (1,0,0),(3,1,1),(4,1,1),(8,2,2),(9,2,2),(17,3,2),(22,4,2),(24,4,2),(28,5,2),(29,5,2),(30,5,2),(31,6,2),(32,6,2),(33,6,2),(203,7,2),(202,7,2),(20,3,2),(157,0,0),(193,5,2),(40,7,2),(2,1,1),(15,2,2),(6,1,1),(34,6,2),(35,6,2),(16,3,2),(7,1,1),(36,7,2),(18,3,2),(26,5,2),(27,5,2),(183,4,2),(38,7,2),(25,5,2),(37,7,2),(21,4,2),(19,3,2),(5,1,1); -INSERT INTO t1 values (179,5,2); -update t1 set parent_id=parent_id+100; -select * from t1 where parent_id=102; -id parent_id level -8 102 2 -9 102 2 -15 102 2 -update t1 set id=id+1000; -update t1 set id=1024 where id=1009; -select * from t1; -id parent_id level -1001 100 0 -1003 101 1 -1004 101 1 -1008 102 2 -1024 102 2 -1017 103 2 -1022 104 2 -1024 104 2 -1028 105 2 -1029 105 2 -1030 105 2 -1031 106 2 -1032 106 2 -1033 106 2 -1203 107 2 -1202 107 2 -1020 103 2 -1157 100 0 -1193 105 2 -1040 107 2 -1002 101 1 -1015 102 2 -1006 101 1 -1034 106 2 -1035 106 2 -1016 103 2 -1007 101 1 -1036 107 2 -1018 103 2 -1026 105 2 -1027 105 2 -1183 104 2 -1038 107 2 -1025 105 2 -1037 107 2 -1021 104 2 -1019 103 2 -1005 101 1 -1179 105 2 -update ignore t1 set id=id+1; -select * from t1; -id parent_id level -1002 100 0 -1004 101 1 -1005 101 1 -1009 102 2 -1025 102 2 -1018 103 2 -1023 104 2 -1025 104 2 -1029 105 2 -1030 105 2 -1031 105 2 -1032 106 2 -1033 106 2 -1034 106 2 -1204 107 2 -1203 107 2 -1021 103 2 -1158 100 0 -1194 105 2 -1041 107 2 -1003 101 1 -1016 102 2 -1007 101 1 -1035 106 2 -1036 106 2 -1017 103 2 -1008 101 1 -1037 107 2 -1019 103 2 -1027 105 2 -1028 105 2 -1184 104 2 -1039 107 2 -1026 105 2 -1038 107 2 -1022 104 2 -1020 103 2 -1006 101 1 -1180 105 2 -update ignore t1 set id=1023 where id=1010; -select * from t1 where parent_id=102; -id parent_id level -1009 102 2 -1025 102 2 -1016 102 2 -explain select level from t1 where level=1; -id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ref level level 1 const # Using index -select level,id from t1 where level=1; -level id -1 1004 -1 1005 -1 1003 -1 1007 -1 1008 -1 1006 -select level,id,parent_id from t1 where level=1; -level id parent_id -1 1004 101 -1 1005 101 -1 1003 101 -1 1007 101 -1 1008 101 -1 1006 101 -select level,id from t1 where level=1 order by id; -level id -1 1003 -1 1004 -1 1005 -1 1006 -1 1007 -1 1008 -delete from t1 where level=1; -select * from t1; -id parent_id level -1002 100 0 -1009 102 2 -1025 102 2 -1018 103 2 -1023 104 2 -1025 104 2 -1029 105 2 -1030 105 2 -1031 105 2 -1032 106 2 -1033 106 2 -1034 106 2 -1204 107 2 -1203 107 2 -1021 103 2 -1158 100 0 -1194 105 2 -1041 107 2 -1016 102 2 -1035 106 2 -1036 106 2 -1017 103 2 -1037 107 2 -1019 103 2 -1027 105 2 -1028 105 2 -1184 104 2 -1039 107 2 -1026 105 2 -1038 107 2 -1022 104 2 -1020 103 2 -1180 105 2 -drop table t1; -CREATE TABLE t1 ( -sca_code char(6) NOT NULL, -cat_code char(6) NOT NULL, -sca_desc varchar(50), -lan_code char(2) NOT NULL, -sca_pic varchar(100), -sca_sdesc varchar(50), -sca_sch_desc varchar(16), -PRIMARY KEY (sca_code, cat_code, lan_code), -INDEX sca_pic (sca_pic) -) engine = innodb ; -INSERT INTO t1 ( sca_code, cat_code, sca_desc, lan_code, sca_pic, sca_sdesc, sca_sch_desc) VALUES ( 'PD', 'J', 'PENDANT', 'EN', NULL, NULL, 'PENDANT'),( 'RI', 'J', 'RING', 'EN', NULL, NULL, 'RING'),( 'QQ', 'N', 'RING', 'EN', 'not null', NULL, 'RING'); -select count(*) from t1 where sca_code = 'PD'; -count(*) -1 -select count(*) from t1 where sca_code <= 'PD'; -count(*) -1 -select count(*) from t1 where sca_pic is null; -count(*) -2 -alter table t1 drop index sca_pic, add index sca_pic (cat_code, sca_pic); -select count(*) from t1 where sca_code='PD' and sca_pic is null; -count(*) -1 -select count(*) from t1 where cat_code='E'; -count(*) -0 -alter table t1 drop index sca_pic, add index (sca_pic, cat_code); -select count(*) from t1 where sca_code='PD' and sca_pic is null; -count(*) -1 -select count(*) from t1 where sca_pic >= 'n'; -count(*) -1 -select sca_pic from t1 where sca_pic is null; -sca_pic -NULL -NULL -update t1 set sca_pic="test" where sca_pic is null; -delete from t1 where sca_code='pd'; -drop table t1; -set @a:=now(); -CREATE TABLE t1 (a int not null, b timestamp not null, primary key (a)) engine=innodb; -insert into t1 (a) values(1),(2),(3); -select t1.a from t1 natural join t1 as t2 where t1.b >= @a order by t1.a; -a -1 -2 -3 -select a from t1 natural join t1 as t2 where b >= @a order by a; -a -1 -2 -3 -update t1 set a=5 where a=1; -select a from t1; -a -2 -3 -5 -drop table t1; -create table t1 (a varchar(100) not null, primary key(a), b int not null) engine=innodb; -insert into t1 values("hello",1),("world",2); -select * from t1 order by b desc; -a b -world 2 -hello 1 -optimize table t1; -Table Op Msg_type Msg_text -test.t1 optimize note Table does not support optimize, doing recreate + analyze instead -test.t1 optimize status OK -show keys from t1; -Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment -t1 0 PRIMARY 1 a A # NULL NULL BTREE -drop table t1; -create table t1 (i int, j int ) ENGINE=innodb; -insert into t1 values (1,2); -select * from t1 where i=1 and j=2; -i j -1 2 -create index ax1 on t1 (i,j); -select * from t1 where i=1 and j=2; -i j -1 2 -drop table t1; -CREATE TABLE t1 ( -a int3 unsigned NOT NULL, -b int1 unsigned NOT NULL, -UNIQUE (a, b) -) ENGINE = innodb; -INSERT INTO t1 VALUES (1, 1); -SELECT MIN(B),MAX(b) FROM t1 WHERE t1.a = 1; -MIN(B) MAX(b) -1 1 -drop table t1; -CREATE TABLE t1 (a int unsigned NOT NULL) engine=innodb; -INSERT INTO t1 VALUES (1); -SELECT * FROM t1; -a -1 -DROP TABLE t1; -create table t1 (a int primary key,b int, c int, d int, e int, f int, g int, h int, i int, j int, k int, l int, m int, n int, o int, p int, q int, r int, s int, t int, u int, v int, w int, x int, y int, z int, a1 int, a2 int, a3 int, a4 int, a5 int, a6 int, a7 int, a8 int, a9 int, b1 int, b2 int, b3 int, b4 int, b5 int, b6 int) engine = innodb; -insert into t1 values (1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1); -explain select * from t1 where a > 0 and a < 50; -id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL # Using where -drop table t1; -create table t1 (id int NOT NULL,id2 int NOT NULL,id3 int NOT NULL,dummy1 char(30),primary key (id,id2),index index_id3 (id3)) engine=innodb; -insert into t1 values (0,0,0,'ABCDEFGHIJ'),(2,2,2,'BCDEFGHIJK'),(1,1,1,'CDEFGHIJKL'); -LOCK TABLES t1 WRITE; -insert into t1 values (99,1,2,'D'),(1,1,2,'D'); -ERROR 23000: Duplicate entry '1-1' for key 'PRIMARY' -select id from t1; -id -0 -1 -2 -select id from t1; -id -0 -1 -2 -UNLOCK TABLES; -DROP TABLE t1; -create table t1 (id int NOT NULL,id2 int NOT NULL,id3 int NOT NULL,dummy1 char(30),primary key (id,id2),index index_id3 (id3)) engine=innodb; -insert into t1 values (0,0,0,'ABCDEFGHIJ'),(2,2,2,'BCDEFGHIJK'),(1,1,1,'CDEFGHIJKL'); -LOCK TABLES t1 WRITE; -begin; -insert into t1 values (99,1,2,'D'),(1,1,2,'D'); -ERROR 23000: Duplicate entry '1-1' for key 'PRIMARY' -select id from t1; -id -0 -1 -2 -insert ignore into t1 values (100,1,2,'D'),(1,1,99,'D'); -commit; -select id,id3 from t1; -id id3 -0 0 -1 1 -2 2 -100 2 -UNLOCK TABLES; -DROP TABLE t1; -create table t1 (a char(20), unique (a(5))) engine=innodb; -drop table t1; -create table t1 (a char(20), index (a(5))) engine=innodb; -show create table t1; -Table Create Table -t1 CREATE TABLE `t1` ( - `a` char(20) DEFAULT NULL, - KEY `a` (`a`(5)) -) ENGINE=InnoDB DEFAULT CHARSET=latin1 -drop table t1; -create temporary table t1 (a int not null auto_increment, primary key(a)) engine=innodb; -insert into t1 values (NULL),(NULL),(NULL); -delete from t1 where a=3; -insert into t1 values (NULL); -select * from t1; -a -1 -2 -4 -alter table t1 add b int; -select * from t1; -a b -1 NULL -2 NULL -4 NULL -drop table t1; -create table t1 -( -id int auto_increment primary key, -name varchar(32) not null, -value text not null, -uid int not null, -unique key(name,uid) -) engine=innodb; -insert into t1 values (1,'one','one value',101), -(2,'two','two value',102),(3,'three','three value',103); -set insert_id=5; -replace into t1 (value,name,uid) values ('other value','two',102); -delete from t1 where uid=102; -set insert_id=5; -replace into t1 (value,name,uid) values ('other value','two',102); -set insert_id=6; -replace into t1 (value,name,uid) values ('other value','two',102); -select * from t1; -id name value uid -1 one one value 101 -3 three three value 103 -6 two other value 102 -drop table t1; -create database mysqltest; -create table mysqltest.t1 (a int not null) engine= innodb; -insert into mysqltest.t1 values(1); -create table mysqltest.t2 (a int not null) engine= myisam; -insert into mysqltest.t2 values(1); -create table mysqltest.t3 (a int not null) engine= heap; -insert into mysqltest.t3 values(1); -commit; -drop database mysqltest; -show tables from mysqltest; -ERROR 42000: Unknown database 'mysqltest' -set autocommit=0; -create table t1 (a int not null) engine= innodb; -insert into t1 values(1),(2); -truncate table t1; -commit; -truncate table t1; -truncate table t1; -select * from t1; -a -insert into t1 values(1),(2); -delete from t1; -select * from t1; -a -commit; -drop table t1; -set autocommit=1; -create table t1 (a int not null) engine= innodb; -insert into t1 values(1),(2); -truncate table t1; -insert into t1 values(1),(2); -select * from t1; -a -1 -2 -truncate table t1; -insert into t1 values(1),(2); -delete from t1; -select * from t1; -a -drop table t1; -create table t1 (a int not null, b int not null, c int not null, primary key (a),key(b)) engine=innodb; -insert into t1 values (3,3,3),(1,1,1),(2,2,2),(4,4,4); -explain select * from t1 order by a; -id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 index NULL PRIMARY 4 NULL # -explain select * from t1 order by b; -id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ALL NULL NULL NULL NULL # Using filesort -explain select * from t1 order by c; -id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ALL NULL NULL NULL NULL # Using filesort -explain select a from t1 order by a; -id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 index NULL PRIMARY 4 NULL # Using index -explain select b from t1 order by b; -id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 index NULL b 4 NULL # Using index -explain select a,b from t1 order by b; -id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 index NULL b 4 NULL # Using index -explain select a,b from t1; -id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 index NULL b 4 NULL # Using index -explain select a,b,c from t1; -id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ALL NULL NULL NULL NULL # -drop table t1; -create table t1 (t int not null default 1, key (t)) engine=innodb; -desc t1; -Field Type Null Key Default Extra -t int(11) NO MUL 1 -drop table t1; -CREATE TABLE t1 ( -number bigint(20) NOT NULL default '0', -cname char(15) NOT NULL default '', -carrier_id smallint(6) NOT NULL default '0', -privacy tinyint(4) NOT NULL default '0', -last_mod_date timestamp NOT NULL, -last_mod_id smallint(6) NOT NULL default '0', -last_app_date timestamp NOT NULL, -last_app_id smallint(6) default '-1', -version smallint(6) NOT NULL default '0', -assigned_scps int(11) default '0', -status tinyint(4) default '0' -) ENGINE=InnoDB; -INSERT INTO t1 VALUES (4077711111,'SeanWheeler',90,2,20020111112846,500,00000000000000,-1,2,3,1); -INSERT INTO t1 VALUES (9197722223,'berry',90,3,20020111112809,500,20020102114532,501,4,10,0); -INSERT INTO t1 VALUES (650,'San Francisco',0,0,20011227111336,342,00000000000000,-1,1,24,1); -INSERT INTO t1 VALUES (302467,'Sue\'s Subshop',90,3,20020109113241,500,20020102115111,501,7,24,0); -INSERT INTO t1 VALUES (6014911113,'SudzCarwash',520,1,20020102115234,500,20020102115259,501,33,32768,0); -INSERT INTO t1 VALUES (333,'tubs',99,2,20020109113440,501,20020109113440,500,3,10,0); -CREATE TABLE t2 ( -number bigint(20) NOT NULL default '0', -cname char(15) NOT NULL default '', -carrier_id smallint(6) NOT NULL default '0', -privacy tinyint(4) NOT NULL default '0', -last_mod_date timestamp NOT NULL, -last_mod_id smallint(6) NOT NULL default '0', -last_app_date timestamp NOT NULL, -last_app_id smallint(6) default '-1', -version smallint(6) NOT NULL default '0', -assigned_scps int(11) default '0', -status tinyint(4) default '0' -) ENGINE=InnoDB; -INSERT INTO t2 VALUES (4077711111,'SeanWheeler',0,2,20020111112853,500,00000000000000,-1,2,3,1); -INSERT INTO t2 VALUES (9197722223,'berry',90,3,20020111112818,500,20020102114532,501,4,10,0); -INSERT INTO t2 VALUES (650,'San Francisco',90,0,20020109113158,342,00000000000000,-1,1,24,1); -INSERT INTO t2 VALUES (333,'tubs',99,2,20020109113453,501,20020109113453,500,3,10,0); -select * from t1; -number cname carrier_id privacy last_mod_date last_mod_id last_app_date last_app_id version assigned_scps status -4077711111 SeanWheeler 90 2 2002-01-11 11:28:46 500 0000-00-00 00:00:00 -1 2 3 1 -9197722223 berry 90 3 2002-01-11 11:28:09 500 2002-01-02 11:45:32 501 4 10 0 -650 San Francisco 0 0 2001-12-27 11:13:36 342 0000-00-00 00:00:00 -1 1 24 1 -302467 Sue's Subshop 90 3 2002-01-09 11:32:41 500 2002-01-02 11:51:11 501 7 24 0 -6014911113 SudzCarwash 520 1 2002-01-02 11:52:34 500 2002-01-02 11:52:59 501 33 32768 0 -333 tubs 99 2 2002-01-09 11:34:40 501 2002-01-09 11:34:40 500 3 10 0 -select * from t2; -number cname carrier_id privacy last_mod_date last_mod_id last_app_date last_app_id version assigned_scps status -4077711111 SeanWheeler 0 2 2002-01-11 11:28:53 500 0000-00-00 00:00:00 -1 2 3 1 -9197722223 berry 90 3 2002-01-11 11:28:18 500 2002-01-02 11:45:32 501 4 10 0 -650 San Francisco 90 0 2002-01-09 11:31:58 342 0000-00-00 00:00:00 -1 1 24 1 -333 tubs 99 2 2002-01-09 11:34:53 501 2002-01-09 11:34:53 500 3 10 0 -delete t1, t2 from t1 left join t2 on t1.number=t2.number where (t1.carrier_id=90 and t1.number=t2.number) or (t2.carrier_id=90 and t1.number=t2.number) or (t1.carrier_id=90 and t2.number is null); -select * from t1; -number cname carrier_id privacy last_mod_date last_mod_id last_app_date last_app_id version assigned_scps status -6014911113 SudzCarwash 520 1 2002-01-02 11:52:34 500 2002-01-02 11:52:59 501 33 32768 0 -333 tubs 99 2 2002-01-09 11:34:40 501 2002-01-09 11:34:40 500 3 10 0 -select * from t2; -number cname carrier_id privacy last_mod_date last_mod_id last_app_date last_app_id version assigned_scps status -333 tubs 99 2 2002-01-09 11:34:53 501 2002-01-09 11:34:53 500 3 10 0 -select * from t2; -number cname carrier_id privacy last_mod_date last_mod_id last_app_date last_app_id version assigned_scps status -333 tubs 99 2 2002-01-09 11:34:53 501 2002-01-09 11:34:53 500 3 10 0 -drop table t1,t2; -create table t1 (id int unsigned not null auto_increment, code tinyint unsigned not null, name char(20) not null, primary key (id), key (code), unique (name)) engine=innodb; -BEGIN; -SET SESSION TRANSACTION ISOLATION LEVEL SERIALIZABLE; -SELECT @@tx_isolation,@@global.tx_isolation; -@@tx_isolation @@global.tx_isolation -SERIALIZABLE REPEATABLE-READ -insert into t1 (code, name) values (1, 'Tim'), (1, 'Monty'), (2, 'David'); -select id, code, name from t1 order by id; -id code name -1 1 Tim -2 1 Monty -3 2 David -COMMIT; -BEGIN; -SET SESSION TRANSACTION ISOLATION LEVEL REPEATABLE READ; -insert into t1 (code, name) values (2, 'Erik'), (3, 'Sasha'); -select id, code, name from t1 order by id; -id code name -1 1 Tim -2 1 Monty -3 2 David -4 2 Erik -5 3 Sasha -COMMIT; -SET binlog_format='MIXED'; -BEGIN; -SET SESSION TRANSACTION ISOLATION LEVEL READ UNCOMMITTED; -insert into t1 (code, name) values (3, 'Jeremy'), (4, 'Matt'); -select id, code, name from t1 order by id; -id code name -1 1 Tim -2 1 Monty -3 2 David -4 2 Erik -5 3 Sasha -6 3 Jeremy -7 4 Matt -COMMIT; -DROP TABLE t1; -create table t1 (n int(10), d int(10)) engine=innodb; -create table t2 (n int(10), d int(10)) engine=innodb; -insert into t1 values(1,1),(1,2); -insert into t2 values(1,10),(2,20); -UPDATE t1,t2 SET t1.d=t2.d,t2.d=30 WHERE t1.n=t2.n; -select * from t1; -n d -1 10 -1 10 -select * from t2; -n d -1 30 -2 20 -drop table t1,t2; -drop table if exists t1, t2; -CREATE TABLE t1 (a int, PRIMARY KEY (a)); -CREATE TABLE t2 (a int, PRIMARY KEY (a)) ENGINE=InnoDB; -create trigger trg_del_t2 after delete on t2 for each row -insert into t1 values (1); -insert into t1 values (1); -insert into t2 values (1),(2); -delete t2 from t2; -ERROR 23000: Duplicate entry '1' for key 'PRIMARY' -select count(*) from t2 /* must be 2 as restored after rollback caused by the error */; -count(*) -2 -drop table t1, t2; -drop table if exists t1, t2; -CREATE TABLE t1 (a int, PRIMARY KEY (a)); -CREATE TABLE t2 (a int, PRIMARY KEY (a)) ENGINE=InnoDB; -create trigger trg_del_t2 after delete on t2 for each row -insert into t1 values (1); -insert into t1 values (1); -insert into t2 values (1),(2); -delete t2 from t2; -ERROR 23000: Duplicate entry '1' for key 'PRIMARY' -select count(*) from t2 /* must be 2 as restored after rollback caused by the error */; -count(*) -2 -drop table t1, t2; -create table t1 (a int, b int) engine=innodb; -insert into t1 values(20,null); -select t2.b, ifnull(t2.b,"this is null") from t1 as t2 left join t1 as t3 on -t2.b=t3.a; -b ifnull(t2.b,"this is null") -NULL this is null -select t2.b, ifnull(t2.b,"this is null") from t1 as t2 left join t1 as t3 on -t2.b=t3.a order by 1; -b ifnull(t2.b,"this is null") -NULL this is null -insert into t1 values(10,null); -select t2.b, ifnull(t2.b,"this is null") from t1 as t2 left join t1 as t3 on -t2.b=t3.a order by 1; -b ifnull(t2.b,"this is null") -NULL this is null -NULL this is null -drop table t1; -create table t1 (a varchar(10) not null) engine=myisam; -create table t2 (b varchar(10) not null unique) engine=innodb; -select t1.a from t1,t2 where t1.a=t2.b; -a -drop table t1,t2; -create table t1 (a int not null, b int, primary key (a)) engine = innodb; -create table t2 (a int not null, b int, primary key (a)) engine = innodb; -insert into t1 values (10, 20); -insert into t2 values (10, 20); -update t1, t2 set t1.b = 150, t2.b = t1.b where t2.a = t1.a and t1.a = 10; -drop table t1,t2; -CREATE TABLE t1 (id INT NOT NULL, PRIMARY KEY (id)) ENGINE=INNODB; -CREATE TABLE t2 (id INT PRIMARY KEY, t1_id INT, INDEX par_ind (t1_id), FOREIGN KEY (t1_id) REFERENCES t1(id) ON DELETE CASCADE ) ENGINE=INNODB; -insert into t1 set id=1; -insert into t2 set id=1, t1_id=1; -delete t1,t2 from t1,t2 where t1.id=t2.t1_id; -select * from t1; -id -select * from t2; -id t1_id -drop table t2,t1; -CREATE TABLE t1(id INT NOT NULL, PRIMARY KEY (id)) ENGINE=INNODB; -CREATE TABLE t2(id INT PRIMARY KEY, t1_id INT, INDEX par_ind (t1_id) ) ENGINE=INNODB; -INSERT INTO t1 VALUES(1); -INSERT INTO t2 VALUES(1, 1); -SELECT * from t1; -id -1 -UPDATE t1,t2 SET t1.id=t1.id+1, t2.t1_id=t1.id+1; -SELECT * from t1; -id -2 -UPDATE t1,t2 SET t1.id=t1.id+1 where t1.id!=t2.id; -SELECT * from t1; -id -3 -DROP TABLE t1,t2; -set autocommit=0; -CREATE TABLE t1 (id CHAR(15) NOT NULL, value CHAR(40) NOT NULL, PRIMARY KEY(id)) ENGINE=InnoDB; -CREATE TABLE t2 (id CHAR(15) NOT NULL, value CHAR(40) NOT NULL, PRIMARY KEY(id)) ENGINE=InnoDB; -CREATE TABLE t3 (id1 CHAR(15) NOT NULL, id2 CHAR(15) NOT NULL, PRIMARY KEY(id1, id2)) ENGINE=InnoDB; -INSERT INTO t3 VALUES("my-test-1", "my-test-2"); -COMMIT; -INSERT INTO t1 VALUES("this-key", "will disappear"); -INSERT INTO t2 VALUES("this-key", "will also disappear"); -DELETE FROM t3 WHERE id1="my-test-1"; -SELECT * FROM t1; -id value -this-key will disappear -SELECT * FROM t2; -id value -this-key will also disappear -SELECT * FROM t3; -id1 id2 -ROLLBACK; -SELECT * FROM t1; -id value -SELECT * FROM t2; -id value -SELECT * FROM t3; -id1 id2 -my-test-1 my-test-2 -SELECT * FROM t3 WHERE id1="my-test-1" LOCK IN SHARE MODE; -id1 id2 -my-test-1 my-test-2 -COMMIT; -set autocommit=1; -DROP TABLE t1,t2,t3; -CREATE TABLE t1 (a int not null primary key, b int not null, unique (b)) engine=innodb; -INSERT INTO t1 values (1,1),(2,2),(3,3),(4,4),(5,5),(6,6),(7,7),(8,8),(9,9); -UPDATE t1 set a=a+100 where b between 2 and 3 and a < 1000; -SELECT * from t1; -a b -1 1 -102 2 -103 3 -4 4 -5 5 -6 6 -7 7 -8 8 -9 9 -drop table t1; -CREATE TABLE t1 (a int not null primary key, b int not null, key (b)) engine=innodb; -CREATE TABLE t2 (a int not null primary key, b int not null, key (b)) engine=innodb; -INSERT INTO t1 values (1,1),(2,2),(3,3),(4,4),(5,5),(6,6),(7,7),(8,8),(9,9),(10,10),(11,11),(12,12); -INSERT INTO t2 values (1,1),(2,2),(3,3),(4,4),(5,5),(6,6),(7,7),(8,8),(9,9); -update t1,t2 set t1.a=t1.a+100; -select * from t1; -a b -101 1 -102 2 -103 3 -104 4 -105 5 -106 6 -107 7 -108 8 -109 9 -110 10 -111 11 -112 12 -update t1,t2 set t1.a=t1.a+100 where t1.a=101; -select * from t1; -a b -201 1 -102 2 -103 3 -104 4 -105 5 -106 6 -107 7 -108 8 -109 9 -110 10 -111 11 -112 12 -update t1,t2 set t1.b=t1.b+10 where t1.b=2; -select * from t1; -a b -201 1 -103 3 -104 4 -105 5 -106 6 -107 7 -108 8 -109 9 -110 10 -111 11 -102 12 -112 12 -update t1,t2 set t1.b=t1.b+2,t2.b=t1.b+10 where t1.b between 3 and 5 and t1.a=t2.a+100; -select * from t1; -a b -201 1 -103 5 -104 6 -106 6 -105 7 -107 7 -108 8 -109 9 -110 10 -111 11 -102 12 -112 12 -select * from t2; -a b -1 1 -2 2 -6 6 -7 7 -8 8 -9 9 -3 13 -4 14 -5 15 -drop table t1,t2; -CREATE TABLE t2 ( NEXT_T BIGINT NOT NULL PRIMARY KEY) ENGINE=MyISAM; -CREATE TABLE t1 ( B_ID INTEGER NOT NULL PRIMARY KEY) ENGINE=InnoDB; -SET AUTOCOMMIT=0; -INSERT INTO t1 ( B_ID ) VALUES ( 1 ); -INSERT INTO t2 ( NEXT_T ) VALUES ( 1 ); -ROLLBACK; -Warnings: -Warning 1196 Some non-transactional changed tables couldn't be rolled back -SELECT * FROM t1; -B_ID -drop table t1,t2; -create table t1 ( pk int primary key, parent int not null, child int not null, index (parent) ) engine = innodb; -insert into t1 values (1,0,4), (2,1,3), (3,2,1), (4,1,2); -select distinct parent,child from t1 order by parent; -parent child -0 4 -1 2 -1 3 -2 1 -drop table t1; -create table t1 (a int not null auto_increment primary key, b int, c int, key(c)) engine=innodb; -create table t2 (a int not null auto_increment primary key, b int); -insert into t1 (b) values (null),(null),(null),(null),(null),(null),(null); -insert into t2 (a) select b from t1; -insert into t1 (b) select b from t2; -insert into t2 (a) select b from t1; -insert into t1 (a) select b from t2; -insert into t2 (a) select b from t1; -insert into t1 (a) select b from t2; -insert into t2 (a) select b from t1; -insert into t1 (a) select b from t2; -insert into t2 (a) select b from t1; -insert into t1 (a) select b from t2; -select count(*) from t1; -count(*) -623 -explain select * from t1 where c between 1 and 2500; -id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range c c 5 NULL # Using where -update t1 set c=a; -explain select * from t1 where c between 1 and 2500; -id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ALL c NULL NULL NULL # Using where -drop table t1,t2; -create table t1 (id int primary key auto_increment, fk int, index index_fk (fk)) engine=innodb; -insert into t1 (id) values (null),(null),(null),(null),(null); -update t1 set fk=69 where fk is null order by id limit 1; -SELECT * from t1; -id fk -2 NULL -3 NULL -4 NULL -5 NULL -1 69 -drop table t1; -create table t1 (a int not null, b int not null, key (a)); -insert into t1 values (1,1),(1,2),(1,3),(3,1),(3,2),(3,3),(3,1),(3,2),(3,3),(2,1),(2,2),(2,3); -SET @tmp=0; -update t1 set b=(@tmp:=@tmp+1) order by a; -update t1 set b=99 where a=1 order by b asc limit 1; -update t1 set b=100 where a=1 order by b desc limit 2; -update t1 set a=a+10+b where a=1 order by b; -select * from t1 order by a,b; -a b -2 4 -2 5 -2 6 -3 7 -3 8 -3 9 -3 10 -3 11 -3 12 -13 2 -111 100 -111 100 -drop table t1; -create table t1 ( c char(8) not null ) engine=innodb; -insert into t1 values ('0'),('1'),('2'),('3'),('4'),('5'),('6'),('7'),('8'),('9'); -insert into t1 values ('A'),('B'),('C'),('D'),('E'),('F'); -alter table t1 add b char(8) not null; -alter table t1 add a char(8) not null; -alter table t1 add primary key (a,b,c); -update t1 set a=c, b=c; -create table t2 (c char(8) not null, b char(8) not null, a char(8) not null, primary key(a,b,c)) engine=innodb; -insert into t2 select * from t1; -delete t1,t2 from t2,t1 where t1.a<'B' and t2.b=t1.b; -drop table t1,t2; -SET AUTOCOMMIT=1; -create table t1 (a integer auto_increment primary key) engine=innodb; -insert into t1 (a) values (NULL),(NULL); -truncate table t1; -insert into t1 (a) values (NULL),(NULL); -SELECT * from t1; -a -1 -2 -drop table t1; -CREATE TABLE t1 (`id 1` INT NOT NULL, PRIMARY KEY (`id 1`)) ENGINE=INNODB; -CREATE TABLE t2 (id INT PRIMARY KEY, t1_id INT, INDEX par_ind (t1_id), FOREIGN KEY (`t1_id`) REFERENCES `t1`(`id 1`) ON DELETE CASCADE ) ENGINE=INNODB; -drop table t2,t1; -create table `t1` (`id` int( 11 ) not null ,primary key ( `id` )) engine = innodb; -insert into `t1`values ( 1 ) ; -create table `t2` (`id` int( 11 ) not null default '0',unique key `id` ( `id` ) ,constraint `t1_id_fk` foreign key ( `id` ) references `t1` (`id` )) engine = innodb; -insert into `t2`values ( 1 ) ; -create table `t3` (`id` int( 11 ) not null default '0',key `id` ( `id` ) ,constraint `t2_id_fk` foreign key ( `id` ) references `t2` (`id` )) engine = innodb; -insert into `t3`values ( 1 ) ; -delete t3,t2,t1 from t1,t2,t3 where t1.id =1 and t2.id = t1.id and t3.id = t2.id; -ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `t1_id_fk` FOREIGN KEY (`id`) REFERENCES `t1` (`id`)) -update t1,t2,t3 set t3.id=5, t2.id=6, t1.id=7 where t1.id =1 and t2.id = t1.id and t3.id = t2.id; -ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `t1_id_fk` FOREIGN KEY (`id`) REFERENCES `t1` (`id`)) -update t3 set t3.id=7 where t1.id =1 and t2.id = t1.id and t3.id = t2.id; -ERROR 42S22: Unknown column 't1.id' in 'where clause' -drop table t3,t2,t1; -create table t1( -id int primary key, -pid int, -index(pid), -foreign key(pid) references t1(id) on delete cascade) engine=innodb; -insert into t1 values(0,0),(1,0),(2,1),(3,2),(4,3),(5,4),(6,5),(7,6), -(8,7),(9,8),(10,9),(11,10),(12,11),(13,12),(14,13),(15,14); -delete from t1 where id=0; -ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails (`test`.`t1`, CONSTRAINT `t1_ibfk_1` FOREIGN KEY (`pid`) REFERENCES `t1` (`id`) ON DELETE CASCADE) -delete from t1 where id=15; -delete from t1 where id=0; -drop table t1; -CREATE TABLE t1 (col1 int(1))ENGINE=InnoDB; -CREATE TABLE t2 (col1 int(1),stamp TIMESTAMP,INDEX stamp_idx -(stamp))ENGINE=InnoDB; -insert into t1 values (1),(2),(3); -insert into t2 values (1, 20020204130000),(2, 20020204130000),(4,20020204310000 ),(5,20020204230000); -Warnings: -Warning 1265 Data truncated for column 'stamp' at row 3 -SELECT col1 FROM t1 UNION SELECT col1 FROM t2 WHERE stamp < -'20020204120000' GROUP BY col1; -col1 -1 -2 -3 -4 -drop table t1,t2; -CREATE TABLE t1 ( -`id` int(10) unsigned NOT NULL auto_increment, -`id_object` int(10) unsigned default '0', -`id_version` int(10) unsigned NOT NULL default '1', -`label` varchar(100) NOT NULL default '', -`description` text, -PRIMARY KEY (`id`), -KEY `id_object` (`id_object`), -KEY `id_version` (`id_version`) -) ENGINE=InnoDB; -INSERT INTO t1 VALUES("6", "3382", "9", "Test", NULL), ("7", "102", "5", "Le Pekin (Test)", NULL),("584", "1794", "4", "Test de resto", NULL),("837", "1822", "6", "Test 3", NULL),("1119", "3524", "1", "Societe Test", NULL),("1122", "3525", "1", "Fournisseur Test", NULL); -CREATE TABLE t2 ( -`id` int(10) unsigned NOT NULL auto_increment, -`id_version` int(10) unsigned NOT NULL default '1', -PRIMARY KEY (`id`), -KEY `id_version` (`id_version`) -) ENGINE=InnoDB; -INSERT INTO t2 VALUES("3524", "1"),("3525", "1"),("1794", "4"),("102", "5"),("1822", "6"),("3382", "9"); -SELECT t2.id, t1.`label` FROM t2 INNER JOIN -(SELECT t1.id_object as id_object FROM t1 WHERE t1.`label` LIKE '%test%') AS lbl -ON (t2.id = lbl.id_object) INNER JOIN t1 ON (t2.id = t1.id_object); -id label -3382 Test -102 Le Pekin (Test) -1794 Test de resto -1822 Test 3 -3524 Societe Test -3525 Fournisseur Test -drop table t1,t2; -create table t1 (a int, b varchar(200), c text not null) checksum=1 engine=myisam; -create table t2 (a int, b varchar(200), c text not null) checksum=0 engine=innodb; -create table t3 (a int, b varchar(200), c text not null) checksum=1 engine=innodb; -insert t1 values (1, "aaa", "bbb"), (NULL, "", "ccccc"), (0, NULL, ""); -insert t2 select * from t1; -insert t3 select * from t1; -checksum table t1, t2, t3, t4 quick; -Table Checksum -test.t1 3442722830 -test.t2 NULL -test.t3 NULL -test.t4 NULL -Warnings: -Error 1146 Table 'test.t4' doesn't exist -checksum table t1, t2, t3, t4; -Table Checksum -test.t1 3442722830 -test.t2 3442722830 -test.t3 3442722830 -test.t4 NULL -Warnings: -Error 1146 Table 'test.t4' doesn't exist -checksum table t1, t2, t3, t4 extended; -Table Checksum -test.t1 3442722830 -test.t2 3442722830 -test.t3 3442722830 -test.t4 NULL -Warnings: -Error 1146 Table 'test.t4' doesn't exist -drop table t1,t2,t3; -create table t1 (id int, name char(10) not null, name2 char(10) not null) engine=innodb; -insert into t1 values(1,'first','fff'),(2,'second','sss'),(3,'third','ttt'); -select trim(name2) from t1 union all select trim(name) from t1 union all select trim(id) from t1; -trim(name2) -fff -sss -ttt -first -second -third -1 -2 -3 -drop table t1; -create table t1 (a int) engine=innodb; -create table t2 like t1; -drop table t1,t2; -create table t1 (id int(11) not null, id2 int(11) not null, unique (id,id2)) engine=innodb; -create table t2 (id int(11) not null, constraint t1_id_fk foreign key ( id ) references t1 (id)) engine = innodb; -show create table t1; -Table Create Table -t1 CREATE TABLE `t1` ( - `id` int(11) NOT NULL, - `id2` int(11) NOT NULL, - UNIQUE KEY `id` (`id`,`id2`) -) ENGINE=InnoDB DEFAULT CHARSET=latin1 -show create table t2; -Table Create Table -t2 CREATE TABLE `t2` ( - `id` int(11) NOT NULL, - KEY `t1_id_fk` (`id`), - CONSTRAINT `t1_id_fk` FOREIGN KEY (`id`) REFERENCES `t1` (`id`) -) ENGINE=InnoDB DEFAULT CHARSET=latin1 -create index id on t2 (id); -show create table t2; -Table Create Table -t2 CREATE TABLE `t2` ( - `id` int(11) NOT NULL, - KEY `id` (`id`), - CONSTRAINT `t1_id_fk` FOREIGN KEY (`id`) REFERENCES `t1` (`id`) -) ENGINE=InnoDB DEFAULT CHARSET=latin1 -create index id2 on t2 (id); -show create table t2; -Table Create Table -t2 CREATE TABLE `t2` ( - `id` int(11) NOT NULL, - KEY `id` (`id`), - KEY `id2` (`id`), - CONSTRAINT `t1_id_fk` FOREIGN KEY (`id`) REFERENCES `t1` (`id`) -) ENGINE=InnoDB DEFAULT CHARSET=latin1 -drop index id2 on t2; -drop index id on t2; -Got one of the listed errors -show create table t2; -Table Create Table -t2 CREATE TABLE `t2` ( - `id` int(11) NOT NULL, - KEY `id` (`id`), - CONSTRAINT `t1_id_fk` FOREIGN KEY (`id`) REFERENCES `t1` (`id`) -) ENGINE=InnoDB DEFAULT CHARSET=latin1 -drop table t2; -create table t2 (id int(11) not null, id2 int(11) not null, constraint t1_id_fk foreign key (id,id2) references t1 (id,id2)) engine = innodb; -show create table t2; -Table Create Table -t2 CREATE TABLE `t2` ( - `id` int(11) NOT NULL, - `id2` int(11) NOT NULL, - KEY `t1_id_fk` (`id`,`id2`), - CONSTRAINT `t1_id_fk` FOREIGN KEY (`id`, `id2`) REFERENCES `t1` (`id`, `id2`) -) ENGINE=InnoDB DEFAULT CHARSET=latin1 -create unique index id on t2 (id,id2); -show create table t2; -Table Create Table -t2 CREATE TABLE `t2` ( - `id` int(11) NOT NULL, - `id2` int(11) NOT NULL, - UNIQUE KEY `id` (`id`,`id2`), - CONSTRAINT `t1_id_fk` FOREIGN KEY (`id`, `id2`) REFERENCES `t1` (`id`, `id2`) -) ENGINE=InnoDB DEFAULT CHARSET=latin1 -drop table t2; -create table t2 (id int(11) not null, id2 int(11) not null, unique (id,id2),constraint t1_id_fk foreign key (id2,id) references t1 (id,id2)) engine = innodb; -show create table t2; -Table Create Table -t2 CREATE TABLE `t2` ( - `id` int(11) NOT NULL, - `id2` int(11) NOT NULL, - UNIQUE KEY `id` (`id`,`id2`), - KEY `t1_id_fk` (`id2`,`id`), - CONSTRAINT `t1_id_fk` FOREIGN KEY (`id2`, `id`) REFERENCES `t1` (`id`, `id2`) -) ENGINE=InnoDB DEFAULT CHARSET=latin1 -drop table t2; -create table t2 (id int(11) not null, id2 int(11) not null, unique (id,id2), constraint t1_id_fk foreign key (id) references t1 (id)) engine = innodb; -show create table t2; -Table Create Table -t2 CREATE TABLE `t2` ( - `id` int(11) NOT NULL, - `id2` int(11) NOT NULL, - UNIQUE KEY `id` (`id`,`id2`), - CONSTRAINT `t1_id_fk` FOREIGN KEY (`id`) REFERENCES `t1` (`id`) -) ENGINE=InnoDB DEFAULT CHARSET=latin1 -drop table t2; -create table t2 (id int(11) not null, id2 int(11) not null, unique (id,id2),constraint t1_id_fk foreign key (id2,id) references t1 (id,id2)) engine = innodb; -show create table t2; -Table Create Table -t2 CREATE TABLE `t2` ( - `id` int(11) NOT NULL, - `id2` int(11) NOT NULL, - UNIQUE KEY `id` (`id`,`id2`), - KEY `t1_id_fk` (`id2`,`id`), - CONSTRAINT `t1_id_fk` FOREIGN KEY (`id2`, `id`) REFERENCES `t1` (`id`, `id2`) -) ENGINE=InnoDB DEFAULT CHARSET=latin1 -drop table t2; -create table t2 (id int(11) not null auto_increment, id2 int(11) not null, constraint t1_id_fk foreign key (id) references t1 (id), primary key (id), index (id,id2)) engine = innodb; -show create table t2; -Table Create Table -t2 CREATE TABLE `t2` ( - `id` int(11) NOT NULL AUTO_INCREMENT, - `id2` int(11) NOT NULL, - PRIMARY KEY (`id`), - KEY `id` (`id`,`id2`), - CONSTRAINT `t1_id_fk` FOREIGN KEY (`id`) REFERENCES `t1` (`id`) -) ENGINE=InnoDB DEFAULT CHARSET=latin1 -drop table t2; -create table t2 (id int(11) not null auto_increment, id2 int(11) not null, constraint t1_id_fk foreign key (id) references t1 (id)) engine= innodb; -show create table t2; -Table Create Table -t2 CREATE TABLE `t2` ( - `id` int(11) NOT NULL AUTO_INCREMENT, - `id2` int(11) NOT NULL, - KEY `t1_id_fk` (`id`), - CONSTRAINT `t1_id_fk` FOREIGN KEY (`id`) REFERENCES `t1` (`id`) -) ENGINE=InnoDB DEFAULT CHARSET=latin1 -alter table t2 add index id_test (id), add index id_test2 (id,id2); -show create table t2; -Table Create Table -t2 CREATE TABLE `t2` ( - `id` int(11) NOT NULL AUTO_INCREMENT, - `id2` int(11) NOT NULL, - KEY `id_test` (`id`), - KEY `id_test2` (`id`,`id2`), - CONSTRAINT `t1_id_fk` FOREIGN KEY (`id`) REFERENCES `t1` (`id`) -) ENGINE=InnoDB DEFAULT CHARSET=latin1 -drop table t2; -create table t2 (id int(11) not null, id2 int(11) not null, constraint t1_id_fk foreign key (id2,id) references t1 (id)) engine = innodb; -ERROR 42000: Incorrect foreign key definition for 't1_id_fk': Key reference and table reference don't match -create table t2 (a int auto_increment primary key, b int, index(b), foreign key (b) references t1(id), unique(b)) engine=innodb; -show create table t2; -Table Create Table -t2 CREATE TABLE `t2` ( - `a` int(11) NOT NULL AUTO_INCREMENT, - `b` int(11) DEFAULT NULL, - PRIMARY KEY (`a`), - UNIQUE KEY `b_2` (`b`), - KEY `b` (`b`), - CONSTRAINT `t2_ibfk_1` FOREIGN KEY (`b`) REFERENCES `t1` (`id`) -) ENGINE=InnoDB DEFAULT CHARSET=latin1 -drop table t2; -create table t2 (a int auto_increment primary key, b int, foreign key (b) references t1(id), foreign key (b) references t1(id), unique(b)) engine=innodb; -show create table t2; -Table Create Table -t2 CREATE TABLE `t2` ( - `a` int(11) NOT NULL AUTO_INCREMENT, - `b` int(11) DEFAULT NULL, - PRIMARY KEY (`a`), - UNIQUE KEY `b` (`b`), - CONSTRAINT `t2_ibfk_1` FOREIGN KEY (`b`) REFERENCES `t1` (`id`), - CONSTRAINT `t2_ibfk_2` FOREIGN KEY (`b`) REFERENCES `t1` (`id`) -) ENGINE=InnoDB DEFAULT CHARSET=latin1 -drop table t2, t1; -create table t1 (c char(10), index (c,c)) engine=innodb; -ERROR 42S21: Duplicate column name 'c' -create table t1 (c1 char(10), c2 char(10), index (c1,c2,c1)) engine=innodb; -ERROR 42S21: Duplicate column name 'c1' -create table t1 (c1 char(10), c2 char(10), index (c1,c1,c2)) engine=innodb; -ERROR 42S21: Duplicate column name 'c1' -create table t1 (c1 char(10), c2 char(10), index (c2,c1,c1)) engine=innodb; -ERROR 42S21: Duplicate column name 'c1' -create table t1 (c1 char(10), c2 char(10)) engine=innodb; -alter table t1 add key (c1,c1); -ERROR 42S21: Duplicate column name 'c1' -alter table t1 add key (c2,c1,c1); -ERROR 42S21: Duplicate column name 'c1' -alter table t1 add key (c1,c2,c1); -ERROR 42S21: Duplicate column name 'c1' -alter table t1 add key (c1,c1,c2); -ERROR 42S21: Duplicate column name 'c1' -drop table t1; -create table t1(a int(1) , b int(1)) engine=innodb; -insert into t1 values ('1111', '3333'); -select distinct concat(a, b) from t1; -concat(a, b) -11113333 -drop table t1; -CREATE TABLE t1 ( a char(10) ) ENGINE=InnoDB; -SELECT a FROM t1 WHERE MATCH (a) AGAINST ('test' IN BOOLEAN MODE); -ERROR HY000: The used table type doesn't support FULLTEXT indexes -DROP TABLE t1; -CREATE TABLE t1 (a_id tinyint(4) NOT NULL default '0', PRIMARY KEY (a_id)) ENGINE=InnoDB DEFAULT CHARSET=latin1; -INSERT INTO t1 VALUES (1),(2),(3); -CREATE TABLE t2 (b_id tinyint(4) NOT NULL default '0',b_a tinyint(4) NOT NULL default '0', PRIMARY KEY (b_id), KEY (b_a), -CONSTRAINT fk_b_a FOREIGN KEY (b_a) REFERENCES t1 (a_id) ON DELETE CASCADE ON UPDATE NO ACTION) ENGINE=InnoDB DEFAULT CHARSET=latin1; -INSERT INTO t2 VALUES (1,1),(2,1),(3,1),(4,2),(5,2); -SELECT * FROM (SELECT t1.*,GROUP_CONCAT(t2.b_id SEPARATOR ',') as b_list FROM (t1 LEFT JOIN (t2) on t1.a_id = t2.b_a) GROUP BY t1.a_id ) AS xyz; -a_id b_list -1 1,2,3 -2 4,5 -3 NULL -DROP TABLE t2; -DROP TABLE t1; -create temporary table t1 (a int) engine=innodb; -insert into t1 values (4711); -truncate t1; -insert into t1 values (42); -select * from t1; -a -42 -drop table t1; -create table t1 (a int) engine=innodb; -insert into t1 values (4711); -truncate t1; -insert into t1 values (42); -select * from t1; -a -42 -drop table t1; -create table t1 (a int not null, b int not null, c blob not null, d int not null, e int, primary key (a,b,c(255),d)) engine=innodb; -insert into t1 values (2,2,"b",2,2),(1,1,"a",1,1),(3,3,"ab",3,3); -select * from t1 order by a,b,c,d; -a b c d e -1 1 a 1 1 -2 2 b 2 2 -3 3 ab 3 3 -explain select * from t1 order by a,b,c,d; -id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using filesort -drop table t1; -create table t1 (a char(1), b char(1), key(a, b)) engine=innodb; -insert into t1 values ('8', '6'), ('4', '7'); -select min(a) from t1; -min(a) -4 -select min(b) from t1 where a='8'; -min(b) -6 -drop table t1; -create table t1 (x bigint unsigned not null primary key) engine=innodb; -insert into t1(x) values (0xfffffffffffffff0),(0xfffffffffffffff1); -select * from t1; -x -18446744073709551600 -18446744073709551601 -select count(*) from t1 where x>0; -count(*) -2 -select count(*) from t1 where x=0; -count(*) -0 -select count(*) from t1 where x<0; -count(*) -0 -select count(*) from t1 where x < -16; -count(*) -0 -select count(*) from t1 where x = -16; -count(*) -0 -explain select count(*) from t1 where x > -16; -id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 index PRIMARY PRIMARY 8 NULL 2 Using where; Using index -select count(*) from t1 where x > -16; -count(*) -2 -select * from t1 where x > -16; -x -18446744073709551600 -18446744073709551601 -select count(*) from t1 where x = 18446744073709551601; -count(*) -1 -drop table t1; -show status like "Innodb_buffer_pool_pages_total"; -Variable_name Value -Innodb_buffer_pool_pages_total 512 -show status like "Innodb_page_size"; -Variable_name Value -Innodb_page_size 16384 -show status like "Innodb_rows_deleted"; -Variable_name Value -Innodb_rows_deleted 71 -show status like "Innodb_rows_inserted"; -Variable_name Value -Innodb_rows_inserted 1084 -show status like "Innodb_rows_updated"; -Variable_name Value -Innodb_rows_updated 885 -show status like "Innodb_row_lock_waits"; -Variable_name Value -Innodb_row_lock_waits 0 -show status like "Innodb_row_lock_current_waits"; -Variable_name Value -Innodb_row_lock_current_waits 0 -show status like "Innodb_row_lock_time"; -Variable_name Value -Innodb_row_lock_time 0 -show status like "Innodb_row_lock_time_max"; -Variable_name Value -Innodb_row_lock_time_max 0 -show status like "Innodb_row_lock_time_avg"; -Variable_name Value -Innodb_row_lock_time_avg 0 -show variables like "innodb_sync_spin_loops"; -Variable_name Value -innodb_sync_spin_loops 20 -set global innodb_sync_spin_loops=1000; -show variables like "innodb_sync_spin_loops"; -Variable_name Value -innodb_sync_spin_loops 1000 -set global innodb_sync_spin_loops=0; -show variables like "innodb_sync_spin_loops"; -Variable_name Value -innodb_sync_spin_loops 0 -set global innodb_sync_spin_loops=20; -show variables like "innodb_sync_spin_loops"; -Variable_name Value -innodb_sync_spin_loops 20 -SET @old_innodb_thread_concurrency= @@global.innodb_thread_concurrency; -show variables like "innodb_thread_concurrency"; -Variable_name Value -innodb_thread_concurrency 8 -set global innodb_thread_concurrency=1001; -Warnings: -Warning 1292 Truncated incorrect thread_concurrency value: '1001' -show variables like "innodb_thread_concurrency"; -Variable_name Value -innodb_thread_concurrency 1000 -set global innodb_thread_concurrency=0; -show variables like "innodb_thread_concurrency"; -Variable_name Value -innodb_thread_concurrency 0 -set global innodb_thread_concurrency=16; -show variables like "innodb_thread_concurrency"; -Variable_name Value -innodb_thread_concurrency 16 -SET @@global.innodb_thread_concurrency= @old_innodb_thread_concurrency; -show variables like "innodb_concurrency_tickets"; -Variable_name Value -innodb_concurrency_tickets 500 -set global innodb_concurrency_tickets=1000; -show variables like "innodb_concurrency_tickets"; -Variable_name Value -innodb_concurrency_tickets 1000 -set global innodb_concurrency_tickets=0; -Warnings: -Warning 1292 Truncated incorrect concurrency_tickets value: '0' -show variables like "innodb_concurrency_tickets"; -Variable_name Value -innodb_concurrency_tickets 1 -set global innodb_concurrency_tickets=500; -show variables like "innodb_concurrency_tickets"; -Variable_name Value -innodb_concurrency_tickets 500 -show variables like "innodb_thread_sleep_delay"; -Variable_name Value -innodb_thread_sleep_delay 10000 -set global innodb_thread_sleep_delay=100000; -show variables like "innodb_thread_sleep_delay"; -Variable_name Value -innodb_thread_sleep_delay 100000 -set global innodb_thread_sleep_delay=0; -show variables like "innodb_thread_sleep_delay"; -Variable_name Value -innodb_thread_sleep_delay 0 -set global innodb_thread_sleep_delay=10000; -show variables like "innodb_thread_sleep_delay"; -Variable_name Value -innodb_thread_sleep_delay 10000 -set storage_engine=INNODB; -drop table if exists t1,t2,t3; ---- Testing varchar --- ---- Testing varchar --- -create table t1 (v varchar(10), c char(10), t text); -insert into t1 values('+ ', '+ ', '+ '); -set @a=repeat(' ',20); -insert into t1 values (concat('+',@a),concat('+',@a),concat('+',@a)); -Warnings: -Note 1265 Data truncated for column 'v' at row 1 -select concat('*',v,'*',c,'*',t,'*') from t1; -concat('*',v,'*',c,'*',t,'*') -*+ *+*+ * -*+ *+*+ * -show create table t1; -Table Create Table -t1 CREATE TABLE `t1` ( - `v` varchar(10) DEFAULT NULL, - `c` char(10) DEFAULT NULL, - `t` text -) ENGINE=InnoDB DEFAULT CHARSET=latin1 -create table t2 like t1; -show create table t2; -Table Create Table -t2 CREATE TABLE `t2` ( - `v` varchar(10) DEFAULT NULL, - `c` char(10) DEFAULT NULL, - `t` text -) ENGINE=InnoDB DEFAULT CHARSET=latin1 -create table t3 select * from t1; -show create table t3; -Table Create Table -t3 CREATE TABLE `t3` ( - `v` varchar(10) DEFAULT NULL, - `c` char(10) DEFAULT NULL, - `t` text -) ENGINE=InnoDB DEFAULT CHARSET=latin1 -alter table t1 modify c varchar(10); -show create table t1; -Table Create Table -t1 CREATE TABLE `t1` ( - `v` varchar(10) DEFAULT NULL, - `c` varchar(10) DEFAULT NULL, - `t` text -) ENGINE=InnoDB DEFAULT CHARSET=latin1 -alter table t1 modify v char(10); -show create table t1; -Table Create Table -t1 CREATE TABLE `t1` ( - `v` char(10) DEFAULT NULL, - `c` varchar(10) DEFAULT NULL, - `t` text -) ENGINE=InnoDB DEFAULT CHARSET=latin1 -alter table t1 modify t varchar(10); -Warnings: -Note 1265 Data truncated for column 't' at row 2 -show create table t1; -Table Create Table -t1 CREATE TABLE `t1` ( - `v` char(10) DEFAULT NULL, - `c` varchar(10) DEFAULT NULL, - `t` varchar(10) DEFAULT NULL -) ENGINE=InnoDB DEFAULT CHARSET=latin1 -select concat('*',v,'*',c,'*',t,'*') from t1; -concat('*',v,'*',c,'*',t,'*') -*+*+*+ * -*+*+*+ * -drop table t1,t2,t3; -create table t1 (v varchar(10), c char(10), t text, key(v), key(c), key(t(10))); -show create table t1; -Table Create Table -t1 CREATE TABLE `t1` ( - `v` varchar(10) DEFAULT NULL, - `c` char(10) DEFAULT NULL, - `t` text, - KEY `v` (`v`), - KEY `c` (`c`), - KEY `t` (`t`(10)) -) ENGINE=InnoDB DEFAULT CHARSET=latin1 -select count(*) from t1; -count(*) -270 -insert into t1 values(concat('a',char(1)),concat('a',char(1)),concat('a',char(1))); -select count(*) from t1 where v='a'; -count(*) -10 -select count(*) from t1 where c='a'; -count(*) -10 -select count(*) from t1 where t='a'; -count(*) -10 -select count(*) from t1 where v='a '; -count(*) -10 -select count(*) from t1 where c='a '; -count(*) -10 -select count(*) from t1 where t='a '; -count(*) -10 -select count(*) from t1 where v between 'a' and 'a '; -count(*) -10 -select count(*) from t1 where v between 'a' and 'a ' and v between 'a ' and 'b\n'; -count(*) -10 -select count(*) from t1 where v like 'a%'; -count(*) -11 -select count(*) from t1 where c like 'a%'; -count(*) -11 -select count(*) from t1 where t like 'a%'; -count(*) -11 -select count(*) from t1 where v like 'a %'; -count(*) -9 -explain select count(*) from t1 where v='a '; -id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ref v v 13 const # Using where; Using index -explain select count(*) from t1 where c='a '; -id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ref c c 11 const # Using where; Using index -explain select count(*) from t1 where t='a '; -id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ref t t 13 const # Using where -explain select count(*) from t1 where v like 'a%'; -id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range v v 13 NULL # Using where; Using index -explain select count(*) from t1 where v between 'a' and 'a '; -id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ref v v 13 const # Using where; Using index -explain select count(*) from t1 where v between 'a' and 'a ' and v between 'a ' and 'b\n'; -id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ref v v 13 const # Using where; Using index -alter table t1 add unique(v); -ERROR 23000: Duplicate entry '{ ' for key 'v_2' -alter table t1 add key(v); -select concat('*',v,'*',c,'*',t,'*') as qq from t1 where v='a'; -qq -*a*a*a* -*a *a*a * -*a *a*a * -*a *a*a * -*a *a*a * -*a *a*a * -*a *a*a * -*a *a*a * -*a *a*a * -*a *a*a * -explain select * from t1 where v='a'; -id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ref v,v_2 # 13 const # Using where -select v,count(*) from t1 group by v limit 10; -v count(*) -a 1 -a 10 -b 10 -c 10 -d 10 -e 10 -f 10 -g 10 -h 10 -i 10 -select v,count(t) from t1 group by v limit 10; -v count(t) -a 1 -a 10 -b 10 -c 10 -d 10 -e 10 -f 10 -g 10 -h 10 -i 10 -select v,count(c) from t1 group by v limit 10; -v count(c) -a 1 -a 10 -b 10 -c 10 -d 10 -e 10 -f 10 -g 10 -h 10 -i 10 -select sql_big_result v,count(t) from t1 group by v limit 10; -v count(t) -a 1 -a 10 -b 10 -c 10 -d 10 -e 10 -f 10 -g 10 -h 10 -i 10 -select sql_big_result v,count(c) from t1 group by v limit 10; -v count(c) -a 1 -a 10 -b 10 -c 10 -d 10 -e 10 -f 10 -g 10 -h 10 -i 10 -select c,count(*) from t1 group by c limit 10; -c count(*) -a 1 -a 10 -b 10 -c 10 -d 10 -e 10 -f 10 -g 10 -h 10 -i 10 -select c,count(t) from t1 group by c limit 10; -c count(t) -a 1 -a 10 -b 10 -c 10 -d 10 -e 10 -f 10 -g 10 -h 10 -i 10 -select sql_big_result c,count(t) from t1 group by c limit 10; -c count(t) -a 1 -a 10 -b 10 -c 10 -d 10 -e 10 -f 10 -g 10 -h 10 -i 10 -select t,count(*) from t1 group by t limit 10; -t count(*) -a 1 -a 10 -b 10 -c 10 -d 10 -e 10 -f 10 -g 10 -h 10 -i 10 -select t,count(t) from t1 group by t limit 10; -t count(t) -a 1 -a 10 -b 10 -c 10 -d 10 -e 10 -f 10 -g 10 -h 10 -i 10 -select sql_big_result t,count(t) from t1 group by t limit 10; -t count(t) -a 1 -a 10 -b 10 -c 10 -d 10 -e 10 -f 10 -g 10 -h 10 -i 10 -alter table t1 modify v varchar(300), drop key v, drop key v_2, add key v (v); -show create table t1; -Table Create Table -t1 CREATE TABLE `t1` ( - `v` varchar(300) DEFAULT NULL, - `c` char(10) DEFAULT NULL, - `t` text, - KEY `c` (`c`), - KEY `t` (`t`(10)), - KEY `v` (`v`) -) ENGINE=InnoDB DEFAULT CHARSET=latin1 -select count(*) from t1 where v='a'; -count(*) -10 -select count(*) from t1 where v='a '; -count(*) -10 -select count(*) from t1 where v between 'a' and 'a '; -count(*) -10 -select count(*) from t1 where v between 'a' and 'a ' and v between 'a ' and 'b\n'; -count(*) -10 -select count(*) from t1 where v like 'a%'; -count(*) -11 -select count(*) from t1 where v like 'a %'; -count(*) -9 -explain select count(*) from t1 where v='a '; -id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ref v v 303 const # Using where; Using index -explain select count(*) from t1 where v like 'a%'; -id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range v v 303 NULL # Using where; Using index -explain select count(*) from t1 where v between 'a' and 'a '; -id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ref v v 303 const # Using where; Using index -explain select count(*) from t1 where v between 'a' and 'a ' and v between 'a ' and 'b\n'; -id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ref v v 303 const # Using where; Using index -explain select * from t1 where v='a'; -id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ref v v 303 const # Using where -select v,count(*) from t1 group by v limit 10; -v count(*) -a 1 -a 10 -b 10 -c 10 -d 10 -e 10 -f 10 -g 10 -h 10 -i 10 -select v,count(t) from t1 group by v limit 10; -v count(t) -a 1 -a 10 -b 10 -c 10 -d 10 -e 10 -f 10 -g 10 -h 10 -i 10 -select sql_big_result v,count(t) from t1 group by v limit 10; -v count(t) -a 1 -a 10 -b 10 -c 10 -d 10 -e 10 -f 10 -g 10 -h 10 -i 10 -alter table t1 drop key v, add key v (v(30)); -show create table t1; -Table Create Table -t1 CREATE TABLE `t1` ( - `v` varchar(300) DEFAULT NULL, - `c` char(10) DEFAULT NULL, - `t` text, - KEY `c` (`c`), - KEY `t` (`t`(10)), - KEY `v` (`v`(30)) -) ENGINE=InnoDB DEFAULT CHARSET=latin1 -select count(*) from t1 where v='a'; -count(*) -10 -select count(*) from t1 where v='a '; -count(*) -10 -select count(*) from t1 where v between 'a' and 'a '; -count(*) -10 -select count(*) from t1 where v between 'a' and 'a ' and v between 'a ' and 'b\n'; -count(*) -10 -select count(*) from t1 where v like 'a%'; -count(*) -11 -select count(*) from t1 where v like 'a %'; -count(*) -9 -explain select count(*) from t1 where v='a '; -id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ref v v 33 const # Using where -explain select count(*) from t1 where v like 'a%'; -id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range v v 33 NULL # Using where -explain select count(*) from t1 where v between 'a' and 'a '; -id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ref v v 33 const # Using where -explain select count(*) from t1 where v between 'a' and 'a ' and v between 'a ' and 'b\n'; -id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ref v v 33 const # Using where -explain select * from t1 where v='a'; -id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ref v v 33 const # Using where -select v,count(*) from t1 group by v limit 10; -v count(*) -a 1 -a 10 -b 10 -c 10 -d 10 -e 10 -f 10 -g 10 -h 10 -i 10 -select v,count(t) from t1 group by v limit 10; -v count(t) -a 1 -a 10 -b 10 -c 10 -d 10 -e 10 -f 10 -g 10 -h 10 -i 10 -select sql_big_result v,count(t) from t1 group by v limit 10; -v count(t) -a 1 -a 10 -b 10 -c 10 -d 10 -e 10 -f 10 -g 10 -h 10 -i 10 -alter table t1 modify v varchar(600), drop key v, add key v (v); -show create table t1; -Table Create Table -t1 CREATE TABLE `t1` ( - `v` varchar(600) DEFAULT NULL, - `c` char(10) DEFAULT NULL, - `t` text, - KEY `c` (`c`), - KEY `t` (`t`(10)), - KEY `v` (`v`) -) ENGINE=InnoDB DEFAULT CHARSET=latin1 -select v,count(*) from t1 group by v limit 10; -v count(*) -a 1 -a 10 -b 10 -c 10 -d 10 -e 10 -f 10 -g 10 -h 10 -i 10 -select v,count(t) from t1 group by v limit 10; -v count(t) -a 1 -a 10 -b 10 -c 10 -d 10 -e 10 -f 10 -g 10 -h 10 -i 10 -select sql_big_result v,count(t) from t1 group by v limit 10; -v count(t) -a 1 -a 10 -b 10 -c 10 -d 10 -e 10 -f 10 -g 10 -h 10 -i 10 -drop table t1; -create table t1 (a char(10), unique (a)); -insert into t1 values ('a '); -insert into t1 values ('a '); -ERROR 23000: Duplicate entry 'a' for key 'a' -alter table t1 modify a varchar(10); -insert into t1 values ('a '),('a '),('a '),('a '); -ERROR 23000: Duplicate entry 'a ' for key 'a' -insert into t1 values ('a '); -ERROR 23000: Duplicate entry 'a ' for key 'a' -insert into t1 values ('a '); -ERROR 23000: Duplicate entry 'a ' for key 'a' -insert into t1 values ('a '); -ERROR 23000: Duplicate entry 'a ' for key 'a' -update t1 set a='a ' where a like 'a%'; -select concat(a,'.') from t1; -concat(a,'.') -a . -update t1 set a='abc ' where a like 'a '; -select concat(a,'.') from t1; -concat(a,'.') -a . -update t1 set a='a ' where a like 'a %'; -select concat(a,'.') from t1; -concat(a,'.') -a . -update t1 set a='a ' where a like 'a '; -select concat(a,'.') from t1; -concat(a,'.') -a . -drop table t1; -create table t1 (v varchar(10), c char(10), t text, key(v(5)), key(c(5)), key(t(5))); -show create table t1; -Table Create Table -t1 CREATE TABLE `t1` ( - `v` varchar(10) DEFAULT NULL, - `c` char(10) DEFAULT NULL, - `t` text, - KEY `v` (`v`(5)), - KEY `c` (`c`(5)), - KEY `t` (`t`(5)) -) ENGINE=InnoDB DEFAULT CHARSET=latin1 -drop table t1; -create table t1 (v char(10) character set utf8); -show create table t1; -Table Create Table -t1 CREATE TABLE `t1` ( - `v` char(10) CHARACTER SET utf8 DEFAULT NULL -) ENGINE=InnoDB DEFAULT CHARSET=latin1 -drop table t1; -create table t1 (v varchar(10), c char(10)) row_format=fixed; -show create table t1; -Table Create Table -t1 CREATE TABLE `t1` ( - `v` varchar(10) DEFAULT NULL, - `c` char(10) DEFAULT NULL -) ENGINE=InnoDB DEFAULT CHARSET=latin1 ROW_FORMAT=FIXED -insert into t1 values('a','a'),('a ','a '); -select concat('*',v,'*',c,'*') from t1; -concat('*',v,'*',c,'*') -*a*a* -*a *a* -drop table t1; -create table t1 (v varchar(65530), key(v(10))); -insert into t1 values(repeat('a',65530)); -select length(v) from t1 where v=repeat('a',65530); -length(v) -65530 -drop table t1; -create table t1(a int, b varchar(12), key ba(b, a)); -insert into t1 values (1, 'A'), (20, NULL); -explain select * from t1 where a=20 and b is null; -id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ref ba ba 20 const,const 1 Using where; Using index -select * from t1 where a=20 and b is null; -a b -20 NULL -drop table t1; -create table t1 (v varchar(65530), key(v)); -Warnings: -Warning 1071 Specified key was too long; max key length is 767 bytes -drop table t1; -create table t1 (v varchar(65536)); -Warnings: -Note 1246 Converting column 'v' from VARCHAR to TEXT -show create table t1; -Table Create Table -t1 CREATE TABLE `t1` ( - `v` mediumtext -) ENGINE=InnoDB DEFAULT CHARSET=latin1 -drop table t1; -create table t1 (v varchar(65530) character set utf8); -Warnings: -Note 1246 Converting column 'v' from VARCHAR to TEXT -show create table t1; -Table Create Table -t1 CREATE TABLE `t1` ( - `v` mediumtext CHARACTER SET utf8 -) ENGINE=InnoDB DEFAULT CHARSET=latin1 -drop table t1; -set storage_engine=MyISAM; -create table t1 (v varchar(16384)) engine=innodb; -drop table t1; -create table t1 (a char(1), b char(1), key(a, b)) engine=innodb; -insert into t1 values ('8', '6'), ('4', '7'); -select min(a) from t1; -min(a) -4 -select min(b) from t1 where a='8'; -min(b) -6 -drop table t1; -CREATE TABLE t1 ( `a` int(11) NOT NULL auto_increment, `b` int(11) default NULL,PRIMARY KEY (`a`),UNIQUE KEY `b` (`b`)) ENGINE=innodb; -insert into t1 (b) values (1); -replace into t1 (b) values (2), (1), (3); -select * from t1; -a b -3 1 -2 2 -4 3 -truncate table t1; -insert into t1 (b) values (1); -replace into t1 (b) values (2); -replace into t1 (b) values (1); -replace into t1 (b) values (3); -select * from t1; -a b -3 1 -2 2 -4 3 -drop table t1; -create table t1 (rowid int not null auto_increment, val int not null,primary -key (rowid), unique(val)) engine=innodb; -replace into t1 (val) values ('1'),('2'); -replace into t1 (val) values ('1'),('2'); -insert into t1 (val) values ('1'),('2'); -ERROR 23000: Duplicate entry '1' for key 'val' -select * from t1; -rowid val -3 1 -4 2 -drop table t1; -create table t1 (a int not null auto_increment primary key, val int) engine=InnoDB; -insert into t1 (val) values (1); -update t1 set a=2 where a=1; -insert into t1 (val) values (1); -ERROR 23000: Duplicate entry '2' for key 'PRIMARY' -select * from t1; -a val -2 1 -drop table t1; -CREATE TABLE t1 (GRADE DECIMAL(4) NOT NULL, PRIMARY KEY (GRADE)) ENGINE=INNODB; -INSERT INTO t1 (GRADE) VALUES (151),(252),(343); -SELECT GRADE FROM t1 WHERE GRADE > 160 AND GRADE < 300; -GRADE -252 -SELECT GRADE FROM t1 WHERE GRADE= 151; -GRADE -151 -DROP TABLE t1; -create table t1 (f1 varchar(10), f2 varchar(10), primary key (f1,f2)) engine=innodb; -create table t2 (f3 varchar(10), f4 varchar(10), key (f4)) engine=innodb; -insert into t2 values ('aa','cc'); -insert into t1 values ('aa','bb'),('aa','cc'); -delete t1 from t1,t2 where f1=f3 and f4='cc'; -select * from t1; -f1 f2 -drop table t1,t2; -CREATE TABLE t1 ( -id INTEGER NOT NULL AUTO_INCREMENT, PRIMARY KEY (id) -) ENGINE=InnoDB; -CREATE TABLE t2 ( -id INTEGER NOT NULL, -FOREIGN KEY (id) REFERENCES t1 (id) -) ENGINE=InnoDB; -INSERT INTO t1 (id) VALUES (NULL); -SELECT * FROM t1; -id -1 -TRUNCATE t1; -INSERT INTO t1 (id) VALUES (NULL); -SELECT * FROM t1; -id -1 -DELETE FROM t1; -TRUNCATE t1; -INSERT INTO t1 (id) VALUES (NULL); -SELECT * FROM t1; -id -1 -DROP TABLE t2, t1; -CREATE TABLE t1 -( -id INT PRIMARY KEY -) ENGINE=InnoDB; -CREATE TEMPORARY TABLE t2 -( -id INT NOT NULL PRIMARY KEY, -b INT, -FOREIGN KEY (b) REFERENCES test.t1(id) -) ENGINE=InnoDB; -Got one of the listed errors -DROP TABLE t1; -create table t1 (col1 varchar(2000), index (col1(767))) -character set = latin1 engine = innodb; -create table t2 (col1 char(255), index (col1)) -character set = latin1 engine = innodb; -create table t3 (col1 binary(255), index (col1)) -character set = latin1 engine = innodb; -create table t4 (col1 varchar(767), index (col1)) -character set = latin1 engine = innodb; -create table t5 (col1 varchar(767) primary key) -character set = latin1 engine = innodb; -create table t6 (col1 varbinary(767) primary key) -character set = latin1 engine = innodb; -create table t7 (col1 text, index(col1(767))) -character set = latin1 engine = innodb; -create table t8 (col1 blob, index(col1(767))) -character set = latin1 engine = innodb; -create table t9 (col1 varchar(512), col2 varchar(512), index(col1, col2)) -character set = latin1 engine = innodb; -show create table t9; -Table Create Table -t9 CREATE TABLE `t9` ( - `col1` varchar(512) DEFAULT NULL, - `col2` varchar(512) DEFAULT NULL, - KEY `col1` (`col1`,`col2`) -) ENGINE=InnoDB DEFAULT CHARSET=latin1 -drop table t1, t2, t3, t4, t5, t6, t7, t8, t9; -create table t1 (col1 varchar(768), index(col1)) -character set = latin1 engine = innodb; -Warnings: -Warning 1071 Specified key was too long; max key length is 767 bytes -create table t2 (col1 varbinary(768), index(col1)) -character set = latin1 engine = innodb; -Warnings: -Warning 1071 Specified key was too long; max key length is 767 bytes -create table t3 (col1 text, index(col1(768))) -character set = latin1 engine = innodb; -Warnings: -Warning 1071 Specified key was too long; max key length is 767 bytes -create table t4 (col1 blob, index(col1(768))) -character set = latin1 engine = innodb; -Warnings: -Warning 1071 Specified key was too long; max key length is 767 bytes -show create table t1; -Table Create Table -t1 CREATE TABLE `t1` ( - `col1` varchar(768) DEFAULT NULL, - KEY `col1` (`col1`(767)) -) ENGINE=InnoDB DEFAULT CHARSET=latin1 -drop table t1, t2, t3, t4; -create table t1 (col1 varchar(768) primary key) -character set = latin1 engine = innodb; -ERROR 42000: Specified key was too long; max key length is 767 bytes -create table t2 (col1 varbinary(768) primary key) -character set = latin1 engine = innodb; -ERROR 42000: Specified key was too long; max key length is 767 bytes -create table t3 (col1 text, primary key(col1(768))) -character set = latin1 engine = innodb; -ERROR 42000: Specified key was too long; max key length is 767 bytes -create table t4 (col1 blob, primary key(col1(768))) -character set = latin1 engine = innodb; -ERROR 42000: Specified key was too long; max key length is 767 bytes -CREATE TABLE t1 -( -id INT PRIMARY KEY -) ENGINE=InnoDB; -CREATE TABLE t2 -( -v INT, -CONSTRAINT c1 FOREIGN KEY (v) REFERENCES t1(id) -) ENGINE=InnoDB; -INSERT INTO t2 VALUES(2); -ERROR 23000: Cannot add or update a child row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `c1` FOREIGN KEY (`v`) REFERENCES `t1` (`id`)) -INSERT INTO t1 VALUES(1); -INSERT INTO t2 VALUES(1); -DELETE FROM t1 WHERE id = 1; -ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `c1` FOREIGN KEY (`v`) REFERENCES `t1` (`id`)) -DROP TABLE t1; -ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails -SET FOREIGN_KEY_CHECKS=0; -DROP TABLE t1; -SET FOREIGN_KEY_CHECKS=1; -INSERT INTO t2 VALUES(3); -ERROR 23000: Cannot add or update a child row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `c1` FOREIGN KEY (`v`) REFERENCES `t1` (`id`)) -DROP TABLE t2; -create table t1(a int not null) engine=innodb DEFAULT CHARSET=latin1; -insert into t1 values (1),(2); -set autocommit=0; -checksum table t1; -Table Checksum -test.t1 1531596814 -insert into t1 values(3); -checksum table t1; -Table Checksum -test.t1 1531596814 -commit; -checksum table t1; -Table Checksum -test.t1 2050879373 -commit; -drop table t1; -create table t1(a int not null) engine=innodb DEFAULT CHARSET=latin1; -insert into t1 values (1),(2); -set autocommit=1; -checksum table t1; -Table Checksum -test.t1 1531596814 -set autocommit=1; -insert into t1 values(3); -checksum table t1; -Table Checksum -test.t1 2050879373 -drop table t1; -set foreign_key_checks=0; -create table t2 (a int primary key, b int, foreign key (b) references t1(a)) engine = innodb; -create table t1(a char(10) primary key, b varchar(20)) engine = innodb; -ERROR HY000: Can't create table 'test.t1' (errno: 150) -set foreign_key_checks=1; -drop table t2; -set foreign_key_checks=0; -create table t1(a varchar(10) primary key) engine = innodb DEFAULT CHARSET=latin1; -create table t2 (a varchar(10), foreign key (a) references t1(a)) engine = innodb DEFAULT CHARSET=utf8; -ERROR HY000: Can't create table 'test.t2' (errno: 150) -set foreign_key_checks=1; -drop table t1; -set foreign_key_checks=0; -create table t2 (a varchar(10), foreign key (a) references t1(a)) engine = innodb; -create table t1(a varchar(10) primary key) engine = innodb; -alter table t1 modify column a int; -Got one of the listed errors -set foreign_key_checks=1; -drop table t2,t1; -set foreign_key_checks=0; -create table t2 (a varchar(10), foreign key (a) references t1(a)) engine = innodb DEFAULT CHARSET=latin1; -create table t1(a varchar(10) primary key) engine = innodb DEFAULT CHARSET=latin1; -alter table t1 convert to character set utf8; -set foreign_key_checks=1; -drop table t2,t1; -set foreign_key_checks=0; -create table t2 (a varchar(10), foreign key (a) references t1(a)) engine = innodb DEFAULT CHARSET=latin1; -create table t3(a varchar(10) primary key) engine = innodb DEFAULT CHARSET=utf8; -rename table t3 to t1; -ERROR HY000: Error on rename of './test/t3' to './test/t1' (errno: 150) -set foreign_key_checks=1; -drop table t2,t3; -create table t1(a int primary key) row_format=redundant engine=innodb; -create table t2(a int primary key,constraint foreign key(a)references t1(a)) row_format=compact engine=innodb; -create table t3(a int primary key) row_format=compact engine=innodb; -create table t4(a int primary key,constraint foreign key(a)references t3(a)) row_format=redundant engine=innodb; -insert into t1 values(1); -insert into t3 values(1); -insert into t2 values(2); -ERROR 23000: Cannot add or update a child row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `t2_ibfk_1` FOREIGN KEY (`a`) REFERENCES `t1` (`a`)) -insert into t4 values(2); -ERROR 23000: Cannot add or update a child row: a foreign key constraint fails (`test`.`t4`, CONSTRAINT `t4_ibfk_1` FOREIGN KEY (`a`) REFERENCES `t3` (`a`)) -insert into t2 values(1); -insert into t4 values(1); -update t1 set a=2; -ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `t2_ibfk_1` FOREIGN KEY (`a`) REFERENCES `t1` (`a`)) -update t2 set a=2; -ERROR 23000: Cannot add or update a child row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `t2_ibfk_1` FOREIGN KEY (`a`) REFERENCES `t1` (`a`)) -update t3 set a=2; -ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails (`test`.`t4`, CONSTRAINT `t4_ibfk_1` FOREIGN KEY (`a`) REFERENCES `t3` (`a`)) -update t4 set a=2; -ERROR 23000: Cannot add or update a child row: a foreign key constraint fails (`test`.`t4`, CONSTRAINT `t4_ibfk_1` FOREIGN KEY (`a`) REFERENCES `t3` (`a`)) -truncate t1; -ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `t2_ibfk_1` FOREIGN KEY (`a`) REFERENCES `t1` (`a`)) -truncate t3; -ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails (`test`.`t4`, CONSTRAINT `t4_ibfk_1` FOREIGN KEY (`a`) REFERENCES `t3` (`a`)) -truncate t2; -truncate t4; -truncate t1; -truncate t3; -drop table t4,t3,t2,t1; -create table t1 (a varchar(255) character set utf8, -b varchar(255) character set utf8, -c varchar(255) character set utf8, -d varchar(255) character set utf8, -key (a,b,c,d)) engine=innodb; -drop table t1; -create table t1 (a varchar(255) character set utf8, -b varchar(255) character set utf8, -c varchar(255) character set utf8, -d varchar(255) character set utf8, -e varchar(255) character set utf8, -key (a,b,c,d,e)) engine=innodb; -ERROR 42000: Specified key was too long; max key length is 3072 bytes -create table t1 (s1 varbinary(2),primary key (s1)) engine=innodb; -create table t2 (s1 binary(2),primary key (s1)) engine=innodb; -create table t3 (s1 varchar(2) binary,primary key (s1)) engine=innodb; -create table t4 (s1 char(2) binary,primary key (s1)) engine=innodb; -insert into t1 values (0x41),(0x4120),(0x4100); -insert into t2 values (0x41),(0x4120),(0x4100); -ERROR 23000: Duplicate entry 'A' for key 'PRIMARY' -insert into t2 values (0x41),(0x4120); -insert into t3 values (0x41),(0x4120),(0x4100); -ERROR 23000: Duplicate entry 'A ' for key 'PRIMARY' -insert into t3 values (0x41),(0x4100); -insert into t4 values (0x41),(0x4120),(0x4100); -ERROR 23000: Duplicate entry 'A' for key 'PRIMARY' -insert into t4 values (0x41),(0x4100); -select hex(s1) from t1; -hex(s1) -41 -4100 -4120 -select hex(s1) from t2; -hex(s1) -4100 -4120 -select hex(s1) from t3; -hex(s1) -4100 -41 -select hex(s1) from t4; -hex(s1) -4100 -41 -drop table t1,t2,t3,t4; -create table t1 (a int primary key,s1 varbinary(3) not null unique) engine=innodb; -create table t2 (s1 binary(2) not null, constraint c foreign key(s1) references t1(s1) on update cascade) engine=innodb; -insert into t1 values(1,0x4100),(2,0x41),(3,0x4120),(4,0x42); -insert into t2 values(0x42); -ERROR 23000: Cannot add or update a child row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `c` FOREIGN KEY (`s1`) REFERENCES `t1` (`s1`) ON UPDATE CASCADE) -insert into t2 values(0x41); -select hex(s1) from t2; -hex(s1) -4100 -update t1 set s1=0x123456 where a=2; -select hex(s1) from t2; -hex(s1) -4100 -update t1 set s1=0x12 where a=1; -ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `c` FOREIGN KEY (`s1`) REFERENCES `t1` (`s1`) ON UPDATE CASCADE) -update t1 set s1=0x12345678 where a=1; -ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `c` FOREIGN KEY (`s1`) REFERENCES `t1` (`s1`) ON UPDATE CASCADE) -update t1 set s1=0x123457 where a=1; -ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `c` FOREIGN KEY (`s1`) REFERENCES `t1` (`s1`) ON UPDATE CASCADE) -update t1 set s1=0x1220 where a=1; -select hex(s1) from t2; -hex(s1) -1220 -update t1 set s1=0x1200 where a=1; -select hex(s1) from t2; -hex(s1) -1200 -update t1 set s1=0x4200 where a=1; -select hex(s1) from t2; -hex(s1) -4200 -delete from t1 where a=1; -ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `c` FOREIGN KEY (`s1`) REFERENCES `t1` (`s1`) ON UPDATE CASCADE) -delete from t1 where a=2; -update t2 set s1=0x4120; -delete from t1; -ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `c` FOREIGN KEY (`s1`) REFERENCES `t1` (`s1`) ON UPDATE CASCADE) -delete from t1 where a!=3; -select a,hex(s1) from t1; -a hex(s1) -3 4120 -select hex(s1) from t2; -hex(s1) -4120 -drop table t2,t1; -create table t1 (a int primary key,s1 varchar(2) binary not null unique) engine=innodb; -create table t2 (s1 char(2) binary not null, constraint c foreign key(s1) references t1(s1) on update cascade) engine=innodb; -insert into t1 values(1,0x4100),(2,0x41); -insert into t2 values(0x41); -select hex(s1) from t2; -hex(s1) -41 -update t1 set s1=0x1234 where a=1; -select hex(s1) from t2; -hex(s1) -41 -update t1 set s1=0x12 where a=2; -select hex(s1) from t2; -hex(s1) -12 -delete from t1 where a=1; -delete from t1 where a=2; -ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `c` FOREIGN KEY (`s1`) REFERENCES `t1` (`s1`) ON UPDATE CASCADE) -select a,hex(s1) from t1; -a hex(s1) -2 12 -select hex(s1) from t2; -hex(s1) -12 -drop table t2,t1; -CREATE TABLE t1(a INT, PRIMARY KEY(a)) ENGINE=InnoDB; -CREATE TABLE t2(a INT) ENGINE=InnoDB; -ALTER TABLE t2 ADD FOREIGN KEY (a) REFERENCES t1(a); -ALTER TABLE t2 DROP FOREIGN KEY t2_ibfk_1; -ALTER TABLE t2 ADD CONSTRAINT t2_ibfk_0 FOREIGN KEY (a) REFERENCES t1(a); -ALTER TABLE t2 DROP FOREIGN KEY t2_ibfk_0; -SHOW CREATE TABLE t2; -Table Create Table -t2 CREATE TABLE `t2` ( - `a` int(11) DEFAULT NULL, - KEY `t2_ibfk_0` (`a`) -) ENGINE=InnoDB DEFAULT CHARSET=latin1 -DROP TABLE t2,t1; -create table t1(a int not null, b int, c int, d int, primary key(a)) engine=innodb; -insert into t1(a) values (1),(2),(3); -commit; -set autocommit = 0; -update t1 set b = 5 where a = 2; -create trigger t1t before insert on t1 for each row begin set NEW.b = NEW.a * 10 + 5, NEW.c = NEW.a / 10; end | -set autocommit = 0; -insert into t1(a) values (10),(20),(30),(40),(50),(60),(70),(80),(90),(100), -(11),(21),(31),(41),(51),(61),(71),(81),(91),(101), -(12),(22),(32),(42),(52),(62),(72),(82),(92),(102), -(13),(23),(33),(43),(53),(63),(73),(83),(93),(103), -(14),(24),(34),(44),(54),(64),(74),(84),(94),(104); -commit; -commit; -drop trigger t1t; -drop table t1; -create table t1(a int not null, b int, c int, d int, primary key(a)) engine=innodb; -create table t2(a int not null, b int, c int, d int, primary key(a)) engine=innodb; -create table t3(a int not null, b int, c int, d int, primary key(a)) engine=innodb; -create table t4(a int not null, b int, c int, d int, primary key(a)) engine=innodb; -create table t5(a int not null, b int, c int, d int, primary key(a)) engine=innodb; -insert into t1(a) values (1),(2),(3); -insert into t2(a) values (1),(2),(3); -insert into t3(a) values (1),(2),(3); -insert into t4(a) values (1),(2),(3); -insert into t3(a) values (5),(7),(8); -insert into t4(a) values (5),(7),(8); -insert into t5(a) values (1),(2),(3),(4),(5),(6),(7),(8),(9),(10),(11),(12); -create trigger t1t before insert on t1 for each row begin -INSERT INTO t2 SET a = NEW.a; -end | -create trigger t2t before insert on t2 for each row begin -DELETE FROM t3 WHERE a = NEW.a; -end | -create trigger t3t before delete on t3 for each row begin -UPDATE t4 SET b = b + 1 WHERE a = OLD.a; -end | -create trigger t4t before update on t4 for each row begin -UPDATE t5 SET b = b + 1 where a = NEW.a; -end | -commit; -set autocommit = 0; -update t1 set b = b + 5 where a = 1; -update t2 set b = b + 5 where a = 1; -update t3 set b = b + 5 where a = 1; -update t4 set b = b + 5 where a = 1; -insert into t5(a) values(20); -set autocommit = 0; -insert into t1(a) values(7); -insert into t2(a) values(8); -delete from t2 where a = 3; -update t4 set b = b + 1 where a = 3; -commit; -drop trigger t1t; -drop trigger t2t; -drop trigger t3t; -drop trigger t4t; -drop table t1, t2, t3, t4, t5; -CREATE TABLE t1 ( -field1 varchar(8) NOT NULL DEFAULT '', -field2 varchar(8) NOT NULL DEFAULT '', -PRIMARY KEY (field1, field2) -) ENGINE=InnoDB; -CREATE TABLE t2 ( -field1 varchar(8) NOT NULL DEFAULT '' PRIMARY KEY, -FOREIGN KEY (field1) REFERENCES t1 (field1) -ON DELETE CASCADE ON UPDATE CASCADE -) ENGINE=InnoDB; -INSERT INTO t1 VALUES ('old', 'somevalu'); -INSERT INTO t1 VALUES ('other', 'anyvalue'); -INSERT INTO t2 VALUES ('old'); -INSERT INTO t2 VALUES ('other'); -UPDATE t1 SET field1 = 'other' WHERE field2 = 'somevalu'; -ERROR 23000: Upholding foreign key constraints for table 't1', entry 'other-somevalu', key 1 would lead to a duplicate entry -DROP TABLE t2; -DROP TABLE t1; -create table t1 ( -c1 bigint not null, -c2 bigint not null, -primary key (c1), -unique key (c2) -) engine=innodb; -create table t2 ( -c1 bigint not null, -primary key (c1) -) engine=innodb; -alter table t1 add constraint c2_fk foreign key (c2) -references t2(c1) on delete cascade; -show create table t1; -Table Create Table -t1 CREATE TABLE `t1` ( - `c1` bigint(20) NOT NULL, - `c2` bigint(20) NOT NULL, - PRIMARY KEY (`c1`), - UNIQUE KEY `c2` (`c2`), - CONSTRAINT `c2_fk` FOREIGN KEY (`c2`) REFERENCES `t2` (`c1`) ON DELETE CASCADE -) ENGINE=InnoDB DEFAULT CHARSET=latin1 -alter table t1 drop foreign key c2_fk; -show create table t1; -Table Create Table -t1 CREATE TABLE `t1` ( - `c1` bigint(20) NOT NULL, - `c2` bigint(20) NOT NULL, - PRIMARY KEY (`c1`), - UNIQUE KEY `c2` (`c2`) -) ENGINE=InnoDB DEFAULT CHARSET=latin1 -drop table t1, t2; -create table t1(a date) engine=innodb; -create table t2(a date, key(a)) engine=innodb; -insert into t1 values('2005-10-01'); -insert into t2 values('2005-10-01'); -select * from t1, t2 -where t2.a between t1.a - interval 2 day and t1.a + interval 2 day; -a a -2005-10-01 2005-10-01 -drop table t1, t2; -create table t1 (id int not null, f_id int not null, f int not null, -primary key(f_id, id)) engine=innodb; -create table t2 (id int not null,s_id int not null,s varchar(200), -primary key(id)) engine=innodb; -INSERT INTO t1 VALUES (8, 1, 3); -INSERT INTO t1 VALUES (1, 2, 1); -INSERT INTO t2 VALUES (1, 0, ''); -INSERT INTO t2 VALUES (8, 1, ''); -commit; -DELETE ml.* FROM t1 AS ml LEFT JOIN t2 AS mm ON (mm.id=ml.id) -WHERE mm.id IS NULL; -select ml.* from t1 as ml left join t2 as mm on (mm.id=ml.id) -where mm.id is null lock in share mode; -id f_id f -drop table t1,t2; -create table t1(a int not null, b int, primary key(a)) engine=innodb; -insert into t1 values(1,1),(2,2),(3,1),(4,2),(5,1),(6,2),(7,3); -commit; -SET binlog_format='MIXED'; -set autocommit = 0; -SET SESSION TRANSACTION ISOLATION LEVEL READ COMMITTED; -update t1 set b = 5 where b = 1; -SET binlog_format='MIXED'; -set autocommit = 0; -SET SESSION TRANSACTION ISOLATION LEVEL READ COMMITTED; -select * from t1 where a = 7 and b = 3 for update; -a b -7 3 -commit; -commit; -drop table t1; -create table t1(a int not null, b int, primary key(a)) engine=innodb; -insert into t1 values(1,1),(2,2),(3,1),(4,2),(5,1),(6,2); -commit; -set autocommit = 0; -select * from t1 lock in share mode; -a b -1 1 -2 2 -3 1 -4 2 -5 1 -6 2 -update t1 set b = 5 where b = 1; -set autocommit = 0; -select * from t1 where a = 2 and b = 2 for update; -ERROR HY000: Lock wait timeout exceeded; try restarting transaction -commit; -commit; -drop table t1; -create table t1(a int not null, b int, primary key(a)) engine=innodb; -insert into t1 values (1,2),(5,3),(4,2); -create table t2(d int not null, e int, primary key(d)) engine=innodb; -insert into t2 values (8,6),(12,1),(3,1); -commit; -set autocommit = 0; -select * from t2 for update; -d e -3 1 -8 6 -12 1 -SET binlog_format='MIXED'; -set autocommit = 0; -SET SESSION TRANSACTION ISOLATION LEVEL READ COMMITTED; -insert into t1 select * from t2; -update t1 set b = (select e from t2 where a = d); -create table t3(d int not null, e int, primary key(d)) engine=innodb -select * from t2; -commit; -commit; -drop table t1, t2, t3; -create table t1(a int not null, b int, primary key(a)) engine=innodb; -insert into t1 values (1,2),(5,3),(4,2); -create table t2(a int not null, b int, primary key(a)) engine=innodb; -insert into t2 values (8,6),(12,1),(3,1); -create table t3(d int not null, b int, primary key(d)) engine=innodb; -insert into t3 values (8,6),(12,1),(3,1); -create table t5(a int not null, b int, primary key(a)) engine=innodb; -insert into t5 values (1,2),(5,3),(4,2); -create table t6(d int not null, e int, primary key(d)) engine=innodb; -insert into t6 values (8,6),(12,1),(3,1); -create table t8(a int not null, b int, primary key(a)) engine=innodb; -insert into t8 values (1,2),(5,3),(4,2); -create table t9(d int not null, e int, primary key(d)) engine=innodb; -insert into t9 values (8,6),(12,1),(3,1); -commit; -set autocommit = 0; -select * from t2 for update; -a b -3 1 -8 6 -12 1 -SET binlog_format='MIXED'; -set autocommit = 0; -SET SESSION TRANSACTION ISOLATION LEVEL SERIALIZABLE; -insert into t1 select * from t2; -SET binlog_format='MIXED'; -set autocommit = 0; -SET SESSION TRANSACTION ISOLATION LEVEL SERIALIZABLE; -update t3 set b = (select b from t2 where a = d); -SET binlog_format='MIXED'; -set autocommit = 0; -SET SESSION TRANSACTION ISOLATION LEVEL SERIALIZABLE; -create table t4(a int not null, b int, primary key(a)) engine=innodb select * from t2; -SET binlog_format='MIXED'; -set autocommit = 0; -SET SESSION TRANSACTION ISOLATION LEVEL READ COMMITTED; -insert into t5 (select * from t2 lock in share mode); -SET binlog_format='MIXED'; -set autocommit = 0; -SET SESSION TRANSACTION ISOLATION LEVEL READ COMMITTED; -update t6 set e = (select b from t2 where a = d lock in share mode); -SET binlog_format='MIXED'; -set autocommit = 0; -SET SESSION TRANSACTION ISOLATION LEVEL READ COMMITTED; -create table t7(a int not null, b int, primary key(a)) engine=innodb select * from t2 lock in share mode; -SET binlog_format='MIXED'; -set autocommit = 0; -SET SESSION TRANSACTION ISOLATION LEVEL READ COMMITTED; -insert into t8 (select * from t2 for update); -SET binlog_format='MIXED'; -set autocommit = 0; -SET SESSION TRANSACTION ISOLATION LEVEL READ COMMITTED; -update t9 set e = (select b from t2 where a = d for update); -SET binlog_format='MIXED'; -set autocommit = 0; -SET SESSION TRANSACTION ISOLATION LEVEL READ COMMITTED; -create table t10(a int not null, b int, primary key(a)) engine=innodb select * from t2 for update; -ERROR HY000: Lock wait timeout exceeded; try restarting transaction -ERROR HY000: Lock wait timeout exceeded; try restarting transaction -ERROR HY000: Lock wait timeout exceeded; try restarting transaction -ERROR HY000: Lock wait timeout exceeded; try restarting transaction -ERROR HY000: Lock wait timeout exceeded; try restarting transaction -ERROR HY000: Lock wait timeout exceeded; try restarting transaction -ERROR HY000: Lock wait timeout exceeded; try restarting transaction -ERROR HY000: Lock wait timeout exceeded; try restarting transaction -ERROR HY000: Lock wait timeout exceeded; try restarting transaction -commit; -drop table t1, t2, t3, t5, t6, t8, t9; -CREATE TABLE t1 (DB_ROW_ID int) engine=innodb; -ERROR HY000: Can't create table 'test.t1' (errno: -1) -CREATE TABLE t1 ( -a BIGINT(20) NOT NULL, -PRIMARY KEY (a) -) ENGINE=INNODB DEFAULT CHARSET=UTF8; -CREATE TABLE t2 ( -a BIGINT(20) NOT NULL, -b VARCHAR(128) NOT NULL, -c TEXT NOT NULL, -PRIMARY KEY (a,b), -KEY idx_t2_b_c (b,c(200)), -CONSTRAINT t_fk FOREIGN KEY (a) REFERENCES t1 (a) -ON DELETE CASCADE -) ENGINE=INNODB DEFAULT CHARSET=UTF8; -INSERT INTO t1 VALUES (1); -INSERT INTO t2 VALUES (1, 'bar', 'vbar'); -INSERT INTO t2 VALUES (1, 'BAR2', 'VBAR'); -INSERT INTO t2 VALUES (1, 'bar_bar', 'bibi'); -INSERT INTO t2 VALUES (1, 'customer_over', '1'); -SELECT * FROM t2 WHERE b = 'customer_over'; -a b c -1 customer_over 1 -SELECT * FROM t2 WHERE BINARY b = 'customer_over'; -a b c -1 customer_over 1 -SELECT DISTINCT p0.a FROM t2 p0 WHERE p0.b = 'customer_over'; -a -1 -/* Bang: Empty result set, above was expected: */ -SELECT DISTINCT p0.a FROM t2 p0 WHERE BINARY p0.b = 'customer_over'; -a -1 -SELECT p0.a FROM t2 p0 WHERE BINARY p0.b = 'customer_over'; -a -1 -drop table t2, t1; -CREATE TABLE t1 ( a int ) ENGINE=innodb; -BEGIN; -INSERT INTO t1 VALUES (1); -OPTIMIZE TABLE t1; -Table Op Msg_type Msg_text -test.t1 optimize note Table does not support optimize, doing recreate + analyze instead -test.t1 optimize status OK -DROP TABLE t1; -CREATE TABLE t1 (id int PRIMARY KEY, f int NOT NULL, INDEX(f)) ENGINE=InnoDB; -CREATE TABLE t2 (id int PRIMARY KEY, f INT NOT NULL, -CONSTRAINT t2_t1 FOREIGN KEY (id) REFERENCES t1 (id) -ON DELETE CASCADE ON UPDATE CASCADE) ENGINE=InnoDB; -ALTER TABLE t2 ADD FOREIGN KEY (f) REFERENCES t1 (f) ON -DELETE CASCADE ON UPDATE CASCADE; -SHOW CREATE TABLE t2; -Table Create Table -t2 CREATE TABLE `t2` ( - `id` int(11) NOT NULL, - `f` int(11) NOT NULL, - PRIMARY KEY (`id`), - KEY `f` (`f`), - CONSTRAINT `t2_ibfk_1` FOREIGN KEY (`f`) REFERENCES `t1` (`f`) ON DELETE CASCADE ON UPDATE CASCADE, - CONSTRAINT `t2_t1` FOREIGN KEY (`id`) REFERENCES `t1` (`id`) ON DELETE CASCADE ON UPDATE CASCADE -) ENGINE=InnoDB DEFAULT CHARSET=latin1 -DROP TABLE t2, t1; -CREATE TABLE t1 (a INT, INDEX(a)) ENGINE=InnoDB; -CREATE TABLE t2 (a INT, INDEX(a)) ENGINE=InnoDB; -INSERT INTO t1 VALUES (1); -INSERT INTO t2 VALUES (1); -ALTER TABLE t2 ADD FOREIGN KEY (a) REFERENCES t1 (a) ON DELETE SET NULL; -ALTER TABLE t2 MODIFY a INT NOT NULL; -ERROR HY000: Error on rename of '#sql-temporary' to './test/t2' (errno: 150) -DELETE FROM t1; -DROP TABLE t2,t1; -CREATE TABLE t1 (a VARCHAR(5) COLLATE utf8_unicode_ci PRIMARY KEY) -ENGINE=InnoDB; -INSERT INTO t1 VALUES (0xEFBCA4EFBCA4EFBCA4); -DELETE FROM t1; -INSERT INTO t1 VALUES ('DDD'); -SELECT * FROM t1; -a -DDD -DROP TABLE t1; -CREATE TABLE t1 (id int PRIMARY KEY AUTO_INCREMENT) ENGINE=InnoDB -AUTO_INCREMENT=42; -INSERT INTO t1 VALUES (0),(347),(0); -SELECT * FROM t1; -id -42 -347 -348 -SHOW CREATE TABLE t1; -Table Create Table -t1 CREATE TABLE `t1` ( - `id` int(11) NOT NULL AUTO_INCREMENT, - PRIMARY KEY (`id`) -) ENGINE=InnoDB AUTO_INCREMENT=349 DEFAULT CHARSET=latin1 -CREATE TABLE t2 (id int PRIMARY KEY) ENGINE=InnoDB; -INSERT INTO t2 VALUES(42),(347),(348); -ALTER TABLE t1 ADD CONSTRAINT t1_t2 FOREIGN KEY (id) REFERENCES t2(id); -SHOW CREATE TABLE t1; -Table Create Table -t1 CREATE TABLE `t1` ( - `id` int(11) NOT NULL AUTO_INCREMENT, - PRIMARY KEY (`id`), - CONSTRAINT `t1_t2` FOREIGN KEY (`id`) REFERENCES `t2` (`id`) -) ENGINE=InnoDB AUTO_INCREMENT=349 DEFAULT CHARSET=latin1 -DROP TABLE t1,t2; -CREATE TABLE t1 ( -c01 CHAR(255), c02 CHAR(255), c03 CHAR(255), c04 CHAR(255), -c05 CHAR(255), c06 CHAR(255), c07 CHAR(255), c08 CHAR(255), -c09 CHAR(255), c10 CHAR(255), c11 CHAR(255), c12 CHAR(255), -c13 CHAR(255), c14 CHAR(255), c15 CHAR(255), c16 CHAR(255), -c17 CHAR(255), c18 CHAR(255), c19 CHAR(255), c20 CHAR(255), -c21 CHAR(255), c22 CHAR(255), c23 CHAR(255), c24 CHAR(255), -c25 CHAR(255), c26 CHAR(255), c27 CHAR(255), c28 CHAR(255), -c29 CHAR(255), c30 CHAR(255), c31 CHAR(255), c32 CHAR(255) -) ENGINE = InnoDB; -ERROR 42000: Row size too large. The maximum row size for the used table type, not counting BLOBs, is 8126. You have to change some columns to TEXT or BLOBs -DROP TABLE IF EXISTS t1; -Warnings: -Note 1051 Unknown table 't1' -CREATE TABLE t1( -id BIGINT(20) NOT NULL AUTO_INCREMENT PRIMARY KEY -) ENGINE=InnoDB; -INSERT INTO t1 VALUES(-10); -SELECT * FROM t1; -id --10 -INSERT INTO t1 VALUES(NULL); -SELECT * FROM t1; -id --10 -1 -DROP TABLE t1; -SET binlog_format='MIXED'; -SET TX_ISOLATION='read-committed'; -SET AUTOCOMMIT=0; -DROP TABLE IF EXISTS t1, t2; -Warnings: -Note 1051 Unknown table 't1' -Note 1051 Unknown table 't2' -CREATE TABLE t1 ( a int ) ENGINE=InnoDB; -CREATE TABLE t2 LIKE t1; -SELECT * FROM t2; -a -SET binlog_format='MIXED'; -SET TX_ISOLATION='read-committed'; -SET AUTOCOMMIT=0; -INSERT INTO t1 VALUES (1); -COMMIT; -SELECT * FROM t1 WHERE a=1; -a -1 -SET binlog_format='MIXED'; -SET TX_ISOLATION='read-committed'; -SET AUTOCOMMIT=0; -SELECT * FROM t2; -a -SET binlog_format='MIXED'; -SET TX_ISOLATION='read-committed'; -SET AUTOCOMMIT=0; -INSERT INTO t1 VALUES (2); -COMMIT; -SELECT * FROM t1 WHERE a=2; -a -2 -SELECT * FROM t1 WHERE a=2; -a -2 -DROP TABLE t1; -DROP TABLE t2; -create table t1 (i int, j int) engine=innodb; -insert into t1 (i, j) values (1, 1), (2, 2); -update t1 set j = 2; -affected rows: 1 -info: Rows matched: 2 Changed: 1 Warnings: 0 -drop table t1; -create table t1 (id int) comment='this is a comment' engine=innodb; -select table_comment, data_free > 0 as data_free_is_set -from information_schema.tables -where table_schema='test' and table_name = 't1'; -table_comment data_free_is_set -this is a comment 1 -drop table t1; -CREATE TABLE t1 ( -c1 INT(10) UNSIGNED NOT NULL AUTO_INCREMENT, -c2 VARCHAR(128) NOT NULL, -PRIMARY KEY(c1) -) ENGINE=InnoDB DEFAULT CHARSET=utf8 AUTO_INCREMENT=100; -CREATE TABLE t2 ( -c1 INT(10) UNSIGNED NOT NULL AUTO_INCREMENT, -c2 INT(10) UNSIGNED DEFAULT NULL, -PRIMARY KEY(c1) -) ENGINE=InnoDB DEFAULT CHARSET=utf8 AUTO_INCREMENT=200; -SELECT AUTO_INCREMENT FROM INFORMATION_SCHEMA.TABLES WHERE table_name = 't2'; -AUTO_INCREMENT -200 -ALTER TABLE t2 ADD CONSTRAINT t1_t2_1 FOREIGN KEY(c1) REFERENCES t1(c1); -SELECT AUTO_INCREMENT FROM INFORMATION_SCHEMA.TABLES WHERE table_name = 't2'; -AUTO_INCREMENT -200 -DROP TABLE t2; -DROP TABLE t1; -CREATE TABLE t1 (c1 int default NULL, -c2 int default NULL -) ENGINE=InnoDB DEFAULT CHARSET=latin1; -TRUNCATE TABLE t1; -affected rows: 0 -INSERT INTO t1 VALUES (1, 1), (2, 2), (3, 3), (4, 4), (5, 5); -affected rows: 5 -info: Records: 5 Duplicates: 0 Warnings: 0 -TRUNCATE TABLE t1; -affected rows: 0 -DROP TABLE t1; -Variable_name Value -Handler_update 0 -Variable_name Value -Handler_delete 0 -Variable_name Value -Handler_update 1 -Variable_name Value -Handler_delete 1 === added file 'mysql-test/r/innodb_bug34053.result' --- a/mysql-test/r/innodb_bug34053.result 1970-01-01 00:00:00 +0000 +++ b/mysql-test/r/innodb_bug34053.result 2009-06-09 13:19:13 +0000 @@ -0,0 +1 @@ +SET storage_engine=InnoDB; === removed file 'mysql-test/r/innodb_bug34053.result' --- a/mysql-test/r/innodb_bug34053.result 2008-02-19 16:44:09 +0000 +++ b/mysql-test/r/innodb_bug34053.result 1970-01-01 00:00:00 +0000 @@ -1 +0,0 @@ -SET storage_engine=InnoDB; === added file 'mysql-test/r/innodb_bug34300.result' --- a/mysql-test/r/innodb_bug34300.result 1970-01-01 00:00:00 +0000 +++ b/mysql-test/r/innodb_bug34300.result 2009-06-09 13:19:13 +0000 @@ -0,0 +1,4 @@ +f4 f8 +xxx zzz +f4 f8 +xxx zzz === removed file 'mysql-test/r/innodb_bug34300.result' --- a/mysql-test/r/innodb_bug34300.result 2009-02-19 09:01:25 +0000 +++ b/mysql-test/r/innodb_bug34300.result 1970-01-01 00:00:00 +0000 @@ -1,8 +0,0 @@ -SELECT f4, f8 FROM bug34300; -f4 f8 -xxx zzz -ALTER TABLE bug34300 ADD COLUMN (f10 INT); -SELECT f4, f8 FROM bug34300; -f4 f8 -xxx zzz -DROP TABLE bug34300; === added file 'mysql-test/r/innodb_bug35220.result' --- a/mysql-test/r/innodb_bug35220.result 1970-01-01 00:00:00 +0000 +++ b/mysql-test/r/innodb_bug35220.result 2009-06-09 13:19:13 +0000 @@ -0,0 +1 @@ +SET storage_engine=InnoDB; === removed file 'mysql-test/r/innodb_bug35220.result' --- a/mysql-test/r/innodb_bug35220.result 2008-08-08 00:25:24 +0000 +++ b/mysql-test/r/innodb_bug35220.result 1970-01-01 00:00:00 +0000 @@ -1 +0,0 @@ -SET storage_engine=InnoDB; === added file 'mysql-test/r/innodb_bug36169.result' --- a/mysql-test/r/innodb_bug36169.result 1970-01-01 00:00:00 +0000 +++ b/mysql-test/r/innodb_bug36169.result 2009-06-11 12:53:26 +0000 @@ -0,0 +1,5 @@ +SET @save_innodb_file_format=@@global.innodb_file_format; +SET @save_innodb_file_format_check=@@global.innodb_file_format_check; +SET @save_innodb_file_per_table=@@global.innodb_file_per_table; +SET GLOBAL innodb_file_format='Barracuda'; +SET GLOBAL innodb_file_per_table=ON; === added file 'mysql-test/r/innodb_bug36172.result' --- a/mysql-test/r/innodb_bug36172.result 1970-01-01 00:00:00 +0000 +++ b/mysql-test/r/innodb_bug36172.result 2009-06-09 13:19:13 +0000 @@ -0,0 +1 @@ +SET storage_engine=InnoDB; === added file 'mysql-test/r/innodb_bug40360.result' --- a/mysql-test/r/innodb_bug40360.result 1970-01-01 00:00:00 +0000 +++ b/mysql-test/r/innodb_bug40360.result 2009-06-09 13:19:13 +0000 @@ -0,0 +1,4 @@ +SET TX_ISOLATION='READ-COMMITTED'; +CREATE TABLE bug40360 (a INT) engine=innodb; +INSERT INTO bug40360 VALUES (1); +DROP TABLE bug40360; === added file 'mysql-test/r/innodb_bug41904.result' --- a/mysql-test/r/innodb_bug41904.result 1970-01-01 00:00:00 +0000 +++ b/mysql-test/r/innodb_bug41904.result 2009-06-09 13:19:13 +0000 @@ -0,0 +1,4 @@ +CREATE TABLE bug41904 (id INT PRIMARY KEY, uniquecol CHAR(15)) ENGINE=InnoDB; +INSERT INTO bug41904 VALUES (1,NULL), (2,NULL); +CREATE UNIQUE INDEX ui ON bug41904 (uniquecol); +DROP TABLE bug41904; === added file 'mysql-test/r/innodb_information_schema.result' --- a/mysql-test/r/innodb_information_schema.result 1970-01-01 00:00:00 +0000 +++ b/mysql-test/r/innodb_information_schema.result 2009-06-09 13:19:13 +0000 @@ -0,0 +1,23 @@ +lock_mode lock_type lock_table lock_index lock_rec lock_data +X RECORD `test`.```t'\"_str` `PRIMARY` 2 '1', 'abc', '''abc', 'abc''', 'a''bc', 'a''bc''', '''abc''''' +X RECORD `test`.```t'\"_str` `PRIMARY` 2 '1', 'abc', '''abc', 'abc''', 'a''bc', 'a''bc''', '''abc''''' +X RECORD `test`.```t'\"_str` `PRIMARY` 3 '2', 'abc', '"abc', 'abc"', 'a"bc', 'a"bc"', '"abc""' +X RECORD `test`.```t'\"_str` `PRIMARY` 3 '2', 'abc', '"abc', 'abc"', 'a"bc', 'a"bc"', '"abc""' +X RECORD `test`.```t'\"_str` `PRIMARY` 4 '3', 'abc', '\\abc', 'abc\\', 'a\\bc', 'a\\bc\\', '\\abc\\\\' +X RECORD `test`.```t'\"_str` `PRIMARY` 4 '3', 'abc', '\\abc', 'abc\\', 'a\\bc', 'a\\bc\\', '\\abc\\\\' +X RECORD `test`.```t'\"_str` `PRIMARY` 5 '4', 'abc', '\0abc', 'abc\0', 'a\0bc', 'a\0bc\0', 'a\0bc\0\0' +X RECORD `test`.```t'\"_str` `PRIMARY` 5 '4', 'abc', '\0abc', 'abc\0', 'a\0bc', 'a\0bc\0', 'a\0bc\0\0' +X RECORD `test`.`t_min` `PRIMARY` 2 -128, 0, -32768, 0, -8388608, 0, -2147483648, 0, -9223372036854775808, 0 +X RECORD `test`.`t_min` `PRIMARY` 2 -128, 0, -32768, 0, -8388608, 0, -2147483648, 0, -9223372036854775808, 0 +X RECORD `test`.`t_max` `PRIMARY` 2 127, 255, 32767, 65535, 8388607, 16777215, 2147483647, 4294967295, 9223372036854775807, 18446744073709551615 +X RECORD `test`.`t_max` `PRIMARY` 2 127, 255, 32767, 65535, 8388607, 16777215, 2147483647, 4294967295, 9223372036854775807, 18446744073709551615 +X RECORD `test`.```t'\"_str` `PRIMARY` 1 supremum pseudo-record +X RECORD `test`.```t'\"_str` `PRIMARY` 1 supremum pseudo-record +lock_table COUNT(*) +`test`.`t_max` 2 +`test`.`t_min` 2 +`test`.```t'\"_str` 10 +lock_table COUNT(*) +"test"."t_max" 2 +"test"."t_min" 2 +"test"."`t'\""_str" 10 === added file 'mysql-test/r/innodb_trx_weight.result' --- a/mysql-test/r/innodb_trx_weight.result 1970-01-01 00:00:00 +0000 +++ b/mysql-test/r/innodb_trx_weight.result 2009-06-09 13:19:13 +0000 @@ -0,0 +1 @@ +SET storage_engine=InnoDB; === removed file 'mysql-test/r/innodb_trx_weight.result' --- a/mysql-test/r/innodb_trx_weight.result 2007-07-10 11:37:43 +0000 +++ b/mysql-test/r/innodb_trx_weight.result 1970-01-01 00:00:00 +0000 @@ -1 +0,0 @@ -SET storage_engine=InnoDB; === added file 'mysql-test/r/innodb_xtradb_bug317074.result' --- a/mysql-test/r/innodb_xtradb_bug317074.result 1970-01-01 00:00:00 +0000 +++ b/mysql-test/r/innodb_xtradb_bug317074.result 2009-06-11 12:53:26 +0000 @@ -0,0 +1,5 @@ +SET @save_innodb_file_format=@@global.innodb_file_format; +SET @save_innodb_file_format_check=@@global.innodb_file_format_check; +SET @save_innodb_file_per_table=@@global.innodb_file_per_table; +SET GLOBAL innodb_file_format='Barracuda'; +SET GLOBAL innodb_file_per_table=ON; === modified file 'mysql-test/r/mysqlbinlog_row_big.result' --- a/mysql-test/r/mysqlbinlog_row_big.result 2008-12-13 19:42:12 +0000 +++ b/mysql-test/r/mysqlbinlog_row_big.result 2009-06-11 12:53:26 +0000 @@ -1,4 +1,9 @@ # +# We need big packets. +# +SET @old_global_max_allowed_packet=@@global.max_allowed_packet; +SET @@global.max_allowed_packet= 1024*1024*1024; +# # Preparatory cleanup. # DROP TABLE IF EXISTS t1; @@ -7,10 +12,6 @@ DROP TABLE IF EXISTS t1; # SET timestamp=1000000000; # -# We need big packets. -# -SET @@global.max_allowed_packet= 1024*1024*1024; -# # Delete all existing binary logs. # RESET MASTER; @@ -71,4 +72,5 @@ FLUSH LOGS; # Cleanup. # DROP TABLE t1; +SET @@global.max_allowed_packet=@old_global_max_allowed_packet; remove_file $MYSQLTEST_VARDIR/tmp/mysqlbinlog_big_1.out === modified file 'mysql-test/r/row-checksum-old.result' --- a/mysql-test/r/row-checksum-old.result 2008-06-28 12:45:15 +0000 +++ b/mysql-test/r/row-checksum-old.result 2009-06-09 15:08:46 +0000 @@ -72,6 +72,8 @@ Table Checksum test.t1 4108368782 drop table if exists t1; create table t1 (a int null, v varchar(100)) engine=innodb checksum=0 row_format=fixed; +Warnings: +Warning 1478 InnoDB: assuming ROW_FORMAT=COMPACT. insert into t1 values(null, null), (1, "hello"); checksum table t1; Table Checksum === modified file 'mysql-test/r/row-checksum.result' --- a/mysql-test/r/row-checksum.result 2008-06-28 12:45:15 +0000 +++ b/mysql-test/r/row-checksum.result 2009-06-09 15:08:46 +0000 @@ -72,6 +72,8 @@ Table Checksum test.t1 3885665021 drop table if exists t1; create table t1 (a int null, v varchar(100)) engine=innodb checksum=0 row_format=fixed; +Warnings: +Warning 1478 InnoDB: assuming ROW_FORMAT=COMPACT. insert into t1 values(null, null), (1, "hello"); checksum table t1; Table Checksum === modified file 'mysql-test/r/variables-big.result' --- a/mysql-test/r/variables-big.result 2008-06-26 05:18:28 +0000 +++ b/mysql-test/r/variables-big.result 2009-06-11 12:53:26 +0000 @@ -1,20 +1,20 @@ set session transaction_prealloc_size=1024*1024*1024*1; -show processlist; -Id User Host db Command Time State Info -# root localhost test Query 0 NULL show processlist +select @pid_temp = (select ID from information_schema.processlist) as 'TRUE'; +TRUE +1 set session transaction_prealloc_size=1024*1024*1024*2; -show processlist; -Id User Host db Command Time State Info -# root localhost test Query 0 NULL show processlist +select @pid_temp = (select ID from information_schema.processlist) as 'TRUE'; +TRUE +1 set session transaction_prealloc_size=1024*1024*1024*3; -show processlist; -Id User Host db Command Time State Info -# root localhost test Query 0 NULL show processlist +select @pid_temp = (select ID from information_schema.processlist) as 'TRUE'; +TRUE +1 set session transaction_prealloc_size=1024*1024*1024*4; -show processlist; -Id User Host db Command Time State Info -# root localhost test Query 0 NULL show processlist +select @pid_temp = (select ID from information_schema.processlist) as 'TRUE'; +TRUE +1 set session transaction_prealloc_size=1024*1024*1024*5; -show processlist; -Id User Host db Command Time State Info -# root localhost test Query 0 NULL show processlist +select @pid_temp = (select ID from information_schema.processlist) as 'TRUE'; +TRUE +1 === modified file 'mysql-test/t/information_schema.test' --- a/mysql-test/t/information_schema.test 2009-04-25 10:05:32 +0000 +++ b/mysql-test/t/information_schema.test 2009-06-11 17:49:51 +0000 @@ -47,7 +47,7 @@ create view v1 (c) as table_name<>'ndb_binlog_index' AND table_name<>'ndb_apply_status' AND NOT (table_schema = 'INFORMATION_SCHEMA' AND table_name LIKE 'PBXT_%'); -select * from v1; +select * from v1 ORDER BY c COLLATE utf8_bin; select c,table_name from v1 inner join information_schema.TABLES v2 on (v1.c=v2.table_name) === added file 'mysql-test/t/innodb-analyze.test' --- a/mysql-test/t/innodb-analyze.test 1970-01-01 00:00:00 +0000 +++ b/mysql-test/t/innodb-analyze.test 2009-06-09 15:08:46 +0000 @@ -0,0 +1,65 @@ +# +# Test that mysqld does not crash when running ANALYZE TABLE with +# different values of the parameter innodb_stats_sample_pages. +# + +-- source include/have_innodb.inc + +# we care only that the following SQL commands do not produce errors +# and do not crash the server +-- disable_query_log +-- disable_result_log +-- enable_warnings + +SET @save_innodb_stats_sample_pages=@@innodb_stats_sample_pages; +SET GLOBAL innodb_stats_sample_pages=0; + +# check that the value has been adjusted to 1 +-- enable_result_log +SHOW VARIABLES LIKE 'innodb_stats_sample_pages'; +-- disable_result_log + +CREATE TABLE innodb_analyze ( + a INT, + b INT, + KEY(a), + KEY(b,a) +) ENGINE=InnoDB; + +# test with empty table + +ANALYZE TABLE innodb_analyze; + +SET GLOBAL innodb_stats_sample_pages=2; +ANALYZE TABLE innodb_analyze; + +SET GLOBAL innodb_stats_sample_pages=4; +ANALYZE TABLE innodb_analyze; + +SET GLOBAL innodb_stats_sample_pages=8; +ANALYZE TABLE innodb_analyze; + +SET GLOBAL innodb_stats_sample_pages=16; +ANALYZE TABLE innodb_analyze; + +INSERT INTO innodb_analyze VALUES +(1,1), (1,1), (1,2), (1,3), (1,4), (1,5), +(8,1), (8,8), (8,2), (7,1), (1,4), (3,5); + +SET GLOBAL innodb_stats_sample_pages=1; +ANALYZE TABLE innodb_analyze; + +SET GLOBAL innodb_stats_sample_pages=2; +ANALYZE TABLE innodb_analyze; + +SET GLOBAL innodb_stats_sample_pages=4; +ANALYZE TABLE innodb_analyze; + +SET GLOBAL innodb_stats_sample_pages=8; +ANALYZE TABLE innodb_analyze; + +SET GLOBAL innodb_stats_sample_pages=16; +ANALYZE TABLE innodb_analyze; + +SET GLOBAL innodb_stats_sample_pages=@save_innodb_stats_sample_pages; +DROP TABLE innodb_analyze; === added file 'mysql-test/t/innodb-autoinc.test' --- a/mysql-test/t/innodb-autoinc.test 1970-01-01 00:00:00 +0000 +++ b/mysql-test/t/innodb-autoinc.test 2009-06-09 15:08:46 +0000 @@ -0,0 +1,480 @@ +-- source include/have_innodb.inc +# embedded server ignores 'delayed', so skip this +-- source include/not_embedded.inc + +--disable_warnings +drop table if exists t1; +--enable_warnings + +# +# Bug #34335 +# +CREATE TABLE t1 (c1 BIGINT PRIMARY KEY AUTO_INCREMENT, c2 VARCHAR(10)) ENGINE=InnoDB; +INSERT INTO t1 VALUES (9223372036854775807, null); +-- error ER_DUP_ENTRY,1062 +INSERT INTO t1 (c2) VALUES ('innodb'); +SELECT * FROM t1; +DROP TABLE t1; +# +## Test AUTOINC overflow +## + +# TINYINT +CREATE TABLE t1 (c1 TINYINT PRIMARY KEY AUTO_INCREMENT, c2 VARCHAR(10)) ENGINE=InnoDB; +INSERT INTO t1 VALUES (127, null); +-- error ER_DUP_ENTRY,1062 +INSERT INTO t1 (c2) VALUES ('innodb'); +SELECT * FROM t1; +DROP TABLE t1; + +CREATE TABLE t1 (c1 TINYINT UNSIGNED PRIMARY KEY AUTO_INCREMENT, c2 VARCHAR(10)) ENGINE=InnoDB; +INSERT INTO t1 VALUES (255, null); +-- error ER_DUP_ENTRY,1062 +INSERT INTO t1 (c2) VALUES ('innodb'); +SELECT * FROM t1; +DROP TABLE t1; +# +# SMALLINT +# +CREATE TABLE t1 (c1 SMALLINT PRIMARY KEY AUTO_INCREMENT, c2 VARCHAR(10)) ENGINE=InnoDB; +INSERT INTO t1 VALUES (32767, null); +-- error ER_DUP_ENTRY,1062 +INSERT INTO t1 (c2) VALUES ('innodb'); +SELECT * FROM t1; +DROP TABLE t1; + +CREATE TABLE t1 (c1 SMALLINT UNSIGNED PRIMARY KEY AUTO_INCREMENT, c2 VARCHAR(10)) ENGINE=InnoDB; +INSERT INTO t1 VALUES (65535, null); +-- error ER_DUP_ENTRY,1062 +INSERT INTO t1 (c2) VALUES ('innodb'); +SELECT * FROM t1; +DROP TABLE t1; +# +# MEDIUMINT +# +CREATE TABLE t1 (c1 MEDIUMINT PRIMARY KEY AUTO_INCREMENT, c2 VARCHAR(10)) ENGINE=InnoDB; +INSERT INTO t1 VALUES (8388607, null); +-- error ER_DUP_ENTRY,1062 +INSERT INTO t1 (c2) VALUES ('innodb'); +SELECT * FROM t1; +DROP TABLE t1; + +CREATE TABLE t1 (c1 MEDIUMINT UNSIGNED PRIMARY KEY AUTO_INCREMENT, c2 VARCHAR(10)) ENGINE=InnoDB; +INSERT INTO t1 VALUES (16777215, null); +-- error ER_DUP_ENTRY,1062 +INSERT INTO t1 (c2) VALUES ('innodb'); +SELECT * FROM t1; +DROP TABLE t1; +# +# INT +# +CREATE TABLE t1 (c1 INT PRIMARY KEY AUTO_INCREMENT, c2 VARCHAR(10)) ENGINE=InnoDB; +INSERT INTO t1 VALUES (2147483647, null); +-- error ER_DUP_ENTRY,1062 +INSERT INTO t1 (c2) VALUES ('innodb'); +SELECT * FROM t1; +DROP TABLE t1; + +CREATE TABLE t1 (c1 INT UNSIGNED PRIMARY KEY AUTO_INCREMENT, c2 VARCHAR(10)) ENGINE=InnoDB; +INSERT INTO t1 VALUES (4294967295, null); +-- error ER_DUP_ENTRY,1062 +INSERT INTO t1 (c2) VALUES ('innodb'); +SELECT * FROM t1; +DROP TABLE t1; +# +# BIGINT +# +CREATE TABLE t1 (c1 BIGINT PRIMARY KEY AUTO_INCREMENT, c2 VARCHAR(10)) ENGINE=InnoDB; +INSERT INTO t1 VALUES (9223372036854775807, null); +-- error ER_DUP_ENTRY,1062 +INSERT INTO t1 (c2) VALUES ('innodb'); +SELECT * FROM t1; +DROP TABLE t1; + +CREATE TABLE t1 (c1 BIGINT UNSIGNED PRIMARY KEY AUTO_INCREMENT, c2 VARCHAR(10)) ENGINE=InnoDB; +INSERT INTO t1 VALUES (18446744073709551615, null); +-- error ER_AUTOINC_READ_FAILED,1467 +INSERT INTO t1 (c2) VALUES ('innodb'); +SELECT * FROM t1; +DROP TABLE t1; + +# +# Bug 37531 +# After truncate, auto_increment behaves incorrectly for InnoDB +# +CREATE TABLE t1(c1 INT PRIMARY KEY AUTO_INCREMENT) ENGINE=InnoDB; +INSERT INTO t1 VALUES (1), (2), (3); +INSERT INTO t1 VALUES (NULL), (NULL), (NULL); +SELECT c1 FROM t1; +SHOW CREATE TABLE t1; +TRUNCATE TABLE t1; +SHOW CREATE TABLE t1; +INSERT INTO t1 VALUES (1), (2), (3); +INSERT INTO t1 VALUES (NULL), (NULL), (NULL); +SELECT c1 FROM t1; +SHOW CREATE TABLE t1; +DROP TABLE t1; + +# +# Deleting all records should not reset the AUTOINC counter. +# +CREATE TABLE t1(c1 INT PRIMARY KEY AUTO_INCREMENT) ENGINE=InnoDB; +INSERT INTO t1 VALUES (1), (2), (3); +INSERT INTO t1 VALUES (NULL), (NULL), (NULL); +SELECT c1 FROM t1; +SHOW CREATE TABLE t1; +DELETE FROM t1; +SHOW CREATE TABLE t1; +INSERT INTO t1 VALUES (1), (2), (3); +INSERT INTO t1 VALUES (NULL), (NULL), (NULL); +SELECT c1 FROM t1; +SHOW CREATE TABLE t1; +DROP TABLE t1; + +# +# Bug 38839 +# Reset the last value generated at end of statement +# +DROP TABLE IF EXISTS t1; +CREATE TABLE t1 (c1 INT AUTO_INCREMENT, c2 INT, PRIMARY KEY(c1)) ENGINE=InnoDB; +INSERT INTO t1 VALUES (NULL, 1); +DELETE FROM t1 WHERE c1 = 1; +INSERT INTO t1 VALUES (2,1); +INSERT INTO t1 VALUES (NULL,8); +SELECT * FROM t1; +DROP TABLE t1; +# Bug 38839 -- same as above but for multi value insert +DROP TABLE IF EXISTS t1; +CREATE TABLE t1 (c1 INT AUTO_INCREMENT, c2 INT, PRIMARY KEY(c1)) ENGINE=InnoDB; +INSERT INTO t1 VALUES (NULL, 1); +DELETE FROM t1 WHERE c1 = 1; +INSERT INTO t1 VALUES (2,1), (NULL, 8); +INSERT INTO t1 VALUES (NULL,9); +SELECT * FROM t1; +DROP TABLE t1; + +# +# Test changes to AUTOINC next value calculation +SET @@SESSION.AUTO_INCREMENT_INCREMENT=100, @@SESSION.AUTO_INCREMENT_OFFSET=10; +SHOW VARIABLES LIKE "auto_inc%"; +DROP TABLE IF EXISTS t1; +CREATE TABLE t1 (c1 INT AUTO_INCREMENT, PRIMARY KEY(c1)) ENGINE=InnoDB; +INSERT INTO t1 VALUES (NULL),(5),(NULL); +INSERT INTO t1 VALUES (250),(NULL); +SELECT * FROM t1; +INSERT INTO t1 VALUES (1000); +SET @@INSERT_ID=400; +INSERT INTO t1 VALUES(NULL),(NULL); +SELECT * FROM t1; +DROP TABLE t1; + +# Test with SIGNED INT column, by inserting a 0 for the first column value +# 0 is treated in the same was NULL. +# Reset the AUTOINC session variables +SET @@SESSION.AUTO_INCREMENT_INCREMENT=1, @@SESSION.AUTO_INCREMENT_OFFSET=1; +SET @@INSERT_ID=1; +SHOW VARIABLES LIKE "auto_inc%"; +DROP TABLE IF EXISTS t1; +CREATE TABLE t1 (c1 INT AUTO_INCREMENT, PRIMARY KEY(c1)) ENGINE=InnoDB; +INSERT INTO t1 VALUES(0); +SELECT * FROM t1; +SET @@SESSION.AUTO_INCREMENT_INCREMENT=100, @@SESSION.AUTO_INCREMENT_OFFSET=10; +INSERT INTO t1 VALUES (-1), (NULL),(2),(NULL); +INSERT INTO t1 VALUES (250),(NULL); +SELECT * FROM t1; +SET @@INSERT_ID=400; +# Duplicate error expected here for autoinc_lock_mode != TRADITIONAL +-- error ER_DUP_ENTRY,1062 +INSERT INTO t1 VALUES(NULL),(NULL); +SELECT * FROM t1; +DROP TABLE t1; + +# Test with SIGNED INT column +# Reset the AUTOINC session variables +SET @@SESSION.AUTO_INCREMENT_INCREMENT=1, @@SESSION.AUTO_INCREMENT_OFFSET=1; +SET @@INSERT_ID=1; +SHOW VARIABLES LIKE "auto_inc%"; +DROP TABLE IF EXISTS t1; +CREATE TABLE t1 (c1 INT AUTO_INCREMENT, PRIMARY KEY(c1)) ENGINE=InnoDB; +INSERT INTO t1 VALUES(-1); +SELECT * FROM t1; +SET @@SESSION.AUTO_INCREMENT_INCREMENT=100, @@SESSION.AUTO_INCREMENT_OFFSET=10; +SHOW VARIABLES LIKE "auto_inc%"; +INSERT INTO t1 VALUES (-2), (NULL),(2),(NULL); +INSERT INTO t1 VALUES (250),(NULL); +SELECT * FROM t1; +INSERT INTO t1 VALUES (1000); +SET @@INSERT_ID=400; +INSERT INTO t1 VALUES(NULL),(NULL); +SELECT * FROM t1; +DROP TABLE t1; + +# Test with UNSIGNED INT column, single insert +# The sign in the value is ignored and a new column value is generated +# Reset the AUTOINC session variables +SET @@SESSION.AUTO_INCREMENT_INCREMENT=1, @@SESSION.AUTO_INCREMENT_OFFSET=1; +SET @@INSERT_ID=1; +SHOW VARIABLES LIKE "auto_inc%"; +DROP TABLE IF EXISTS t1; +CREATE TABLE t1 (c1 INT UNSIGNED AUTO_INCREMENT, PRIMARY KEY(c1)) ENGINE=InnoDB; +INSERT INTO t1 VALUES(-1); +SELECT * FROM t1; +SET @@SESSION.AUTO_INCREMENT_INCREMENT=100, @@SESSION.AUTO_INCREMENT_OFFSET=10; +SHOW VARIABLES LIKE "auto_inc%"; +INSERT INTO t1 VALUES (-2); +INSERT INTO t1 VALUES (NULL); +INSERT INTO t1 VALUES (2); +INSERT INTO t1 VALUES (NULL); +INSERT INTO t1 VALUES (250); +INSERT INTO t1 VALUES (NULL); +SELECT * FROM t1; +INSERT INTO t1 VALUES (1000); +SET @@INSERT_ID=400; +INSERT INTO t1 VALUES(NULL); +INSERT INTO t1 VALUES(NULL); +SELECT * FROM t1; +DROP TABLE t1; + +# Test with UNSIGNED INT column, multi-value inserts +# The sign in the value is ignored and a new column value is generated +# Reset the AUTOINC session variables +SET @@SESSION.AUTO_INCREMENT_INCREMENT=1, @@SESSION.AUTO_INCREMENT_OFFSET=1; +SET @@INSERT_ID=1; +SHOW VARIABLES LIKE "auto_inc%"; +DROP TABLE IF EXISTS t1; +CREATE TABLE t1 (c1 INT UNSIGNED AUTO_INCREMENT, PRIMARY KEY(c1)) ENGINE=InnoDB; +INSERT INTO t1 VALUES(-1); +SELECT * FROM t1; +SET @@SESSION.AUTO_INCREMENT_INCREMENT=100, @@SESSION.AUTO_INCREMENT_OFFSET=10; +SHOW VARIABLES LIKE "auto_inc%"; +INSERT INTO t1 VALUES (-2),(NULL),(2),(NULL); +INSERT INTO t1 VALUES (250),(NULL); +SELECT * FROM t1; +INSERT INTO t1 VALUES (1000); +SET @@INSERT_ID=400; +# Duplicate error expected here for autoinc_lock_mode != TRADITIONAL +-- error ER_DUP_ENTRY,1062 +INSERT INTO t1 VALUES(NULL),(NULL); +SELECT * FROM t1; +DROP TABLE t1; + +# +# Check for overflow handling when increment is > 1 +SET @@SESSION.AUTO_INCREMENT_INCREMENT=1, @@SESSION.AUTO_INCREMENT_OFFSET=1; +SET @@INSERT_ID=1; +SHOW VARIABLES LIKE "auto_inc%"; +DROP TABLE IF EXISTS t1; +CREATE TABLE t1 (c1 BIGINT AUTO_INCREMENT, PRIMARY KEY(c1)) ENGINE=InnoDB; +# TODO: Fix the autoinc init code +# We have to do this because of a bug in the AUTOINC init code. +INSERT INTO t1 VALUES(NULL); +INSERT INTO t1 VALUES (9223372036854775794); #-- 2^63 - 14 +SELECT * FROM t1; +SET @@SESSION.AUTO_INCREMENT_INCREMENT=2, @@SESSION.AUTO_INCREMENT_OFFSET=10; +SHOW VARIABLES LIKE "auto_inc%"; +# This should just fit +INSERT INTO t1 VALUES (NULL),(NULL),(NULL),(NULL),(NULL),(NULL); +SELECT * FROM t1; +DROP TABLE t1; + +# +# Check for overflow handling when increment and offser are > 1 +SET @@SESSION.AUTO_INCREMENT_INCREMENT=1, @@SESSION.AUTO_INCREMENT_OFFSET=1; +SET @@INSERT_ID=1; +SHOW VARIABLES LIKE "auto_inc%"; +DROP TABLE IF EXISTS t1; +CREATE TABLE t1 (c1 BIGINT UNSIGNED AUTO_INCREMENT, PRIMARY KEY(c1)) ENGINE=InnoDB; +# TODO: Fix the autoinc init code +# We have to do this because of a bug in the AUTOINC init code. +INSERT INTO t1 VALUES(NULL); +INSERT INTO t1 VALUES (18446744073709551603); #-- 2^64 - 13 +SELECT * FROM t1; +SET @@SESSION.AUTO_INCREMENT_INCREMENT=2, @@SESSION.AUTO_INCREMENT_OFFSET=10; +SHOW VARIABLES LIKE "auto_inc%"; +# This should fail because of overflow but it doesn't, it seems to be +# a MySQL server bug. It wraps around to 0 for the last value. +# See MySQL Bug# 39828 +# +# Instead of wrapping around, it asserts when MySQL is compiled --with-debug +# (see sql/handler.cc:handler::update_auto_increment()). Don't test for +# overflow until Bug #39828 is fixed. +# +# Since this asserts when compiled --with-debug, we can't properly test this +# until Bug #39828 is fixed. For now, this test is meaningless. +#if Bug #39828 is fixed +#INSERT INTO t1 VALUES (NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL); +#else +INSERT INTO t1 VALUES (NULL),(NULL),(NULL),(NULL),(NULL),(NULL); +#endif +SELECT * FROM t1; +DROP TABLE t1; + +# +# Check for overflow handling when increment and offset are odd numbers +SET @@SESSION.AUTO_INCREMENT_INCREMENT=1, @@SESSION.AUTO_INCREMENT_OFFSET=1; +SET @@INSERT_ID=1; +SHOW VARIABLES LIKE "auto_inc%"; +DROP TABLE IF EXISTS t1; +CREATE TABLE t1 (c1 BIGINT UNSIGNED AUTO_INCREMENT, PRIMARY KEY(c1)) ENGINE=InnoDB; +# TODO: Fix the autoinc init code +# We have to do this because of a bug in the AUTOINC init code. +INSERT INTO t1 VALUES(NULL); +INSERT INTO t1 VALUES (18446744073709551603); #-- 2^64 - 13 +SELECT * FROM t1; +SET @@SESSION.AUTO_INCREMENT_INCREMENT=5, @@SESSION.AUTO_INCREMENT_OFFSET=7; +SHOW VARIABLES LIKE "auto_inc%"; +# This should fail because of overflow but it doesn't. It fails with +# a duplicate entry message because of a MySQL server bug, it wraps +# around. See MySQL Bug# 39828, once MySQL fix the bug we can replace +# the ER_DUP_ENTRY, 1062 below with the appropriate error message +# +# Since this asserts when compiled --with-debug, we can't properly test this +# until Bug #39828 is fixed. For now, this test is meaningless. +#if Bug #39828 is fixed +# Still need to fix this error code, error should mention overflow +#-- error ER_DUP_ENTRY,1062 +#INSERT INTO t1 VALUES (NULL),(NULL), (NULL); +#else +INSERT INTO t1 VALUES (NULL),(NULL); +#endif +SELECT * FROM t1; +DROP TABLE t1; + +# Check for overflow handling when increment and offset are odd numbers +# and check for large -ve numbers +SET @@SESSION.AUTO_INCREMENT_INCREMENT=1, @@SESSION.AUTO_INCREMENT_OFFSET=1; +SET @@INSERT_ID=1; +SHOW VARIABLES LIKE "auto_inc%"; +DROP TABLE IF EXISTS t1; +CREATE TABLE t1 (c1 BIGINT AUTO_INCREMENT, PRIMARY KEY(c1)) ENGINE=InnoDB; +# TODO: Fix the autoinc init code +# We have to do this because of a bug in the AUTOINC init code. +INSERT INTO t1 VALUES(NULL); +INSERT INTO t1 VALUES(-9223372036854775806); #-- -2^63 + 2 +INSERT INTO t1 VALUES(-9223372036854775807); #-- -2^63 + 1 +INSERT INTO t1 VALUES(-9223372036854775808); #-- -2^63 +SELECT * FROM t1; +SET @@SESSION.AUTO_INCREMENT_INCREMENT=3, @@SESSION.AUTO_INCREMENT_OFFSET=3; +SHOW VARIABLES LIKE "auto_inc%"; +INSERT INTO t1 VALUES (NULL),(NULL), (NULL); +SELECT * FROM t1; +DROP TABLE t1; +# +# Check for overflow handling when increment and offset are very +# large numbers 2^60 +SET @@SESSION.AUTO_INCREMENT_INCREMENT=1, @@SESSION.AUTO_INCREMENT_OFFSET=1; +SET @@INSERT_ID=1; +SHOW VARIABLES LIKE "auto_inc%"; +DROP TABLE IF EXISTS t1; +CREATE TABLE t1 (c1 BIGINT UNSIGNED AUTO_INCREMENT, PRIMARY KEY(c1)) ENGINE=InnoDB; +# TODO: Fix the autoinc init code +# We have to do this because of a bug in the AUTOINC init code. +INSERT INTO t1 VALUES(NULL); +INSERT INTO t1 VALUES (18446744073709551610); #-- 2^64 - 2 +SELECT * FROM t1; +SET @@SESSION.AUTO_INCREMENT_INCREMENT=1152921504606846976, @@SESSION.AUTO_INCREMENT_OFFSET=1152921504606846976; +SHOW VARIABLES LIKE "auto_inc%"; +# This should fail because of overflow but it doesn't. It wraps around +# and the autoinc values look bogus too. +# See MySQL Bug# 39828, once MySQL fix the bug we can enable the error +# code expected test. +# -- error ER_AUTOINC_READ_FAILED,1467 +# +# Since this asserts when compiled --with-debug, we can't properly test this +# until Bug #39828 is fixed. For now, this test is meaningless. +#if Bug #39828 is fixed +#-- error ER_AUTOINC_READ_FAILED,1467 +#INSERT INTO t1 VALUES (NULL),(NULL); +#else +INSERT INTO t1 VALUES (NULL); +#endif +SELECT * FROM t1; +DROP TABLE t1; + +# +# Check for floating point autoinc column handling +# +SET @@SESSION.AUTO_INCREMENT_INCREMENT=1, @@SESSION.AUTO_INCREMENT_OFFSET=1; +SET @@INSERT_ID=1; +SHOW VARIABLES LIKE "auto_inc%"; +CREATE TABLE t1 (c1 DOUBLE NOT NULL AUTO_INCREMENT, c2 INT, PRIMARY KEY (c1)) ENGINE=InnoDB; +INSERT INTO t1 VALUES(NULL, 1); +INSERT INTO t1 VALUES(NULL, 2); +SELECT * FROM t1; +ALTER TABLE t1 CHANGE c1 c1 SERIAL; +SELECT * FROM t1; +INSERT INTO t1 VALUES(NULL, 3); +INSERT INTO t1 VALUES(NULL, 4); +SELECT * FROM t1; +DROP TABLE IF EXISTS t1; +CREATE TABLE t1 (c1 FLOAT NOT NULL AUTO_INCREMENT, c2 INT, PRIMARY KEY (c1)) ENGINE=InnoDB; +INSERT INTO t1 VALUES(NULL, 1); +INSERT INTO t1 VALUES(NULL, 2); +SELECT * FROM t1; +ALTER TABLE t1 CHANGE c1 c1 SERIAL; +SELECT * FROM t1; +INSERT INTO t1 VALUES(NULL, 3); +INSERT INTO t1 VALUES(NULL, 4); +SELECT * FROM t1; +DROP TABLE t1; + +# +# Bug# 42714: AUTOINC column calculated next value not greater than highest +# value stored in table. +# +SET @@SESSION.AUTO_INCREMENT_INCREMENT=1, @@SESSION.AUTO_INCREMENT_OFFSET=5; +DROP TABLE IF EXISTS t1; +DROP TABLE IF EXISTS t2; +CREATE TABLE t1 ( + a INT(11) UNSIGNED NOT NULL AUTO_INCREMENT, + b INT(10) UNSIGNED NOT NULL, + c ENUM('FALSE','TRUE') DEFAULT NULL, + PRIMARY KEY (a)) ENGINE = InnoDB; +CREATE TABLE t2 ( + m INT(11) UNSIGNED NOT NULL AUTO_INCREMENT, + n INT(10) UNSIGNED NOT NULL, + o enum('FALSE','TRUE') DEFAULT NULL, + PRIMARY KEY (m)) ENGINE = InnoDB; +INSERT INTO t2 (n,o) VALUES + (1 , 'true'), (1 , 'false'), (2 , 'true'), (2 , 'false'), (3 , 'true'), + (3 , 'false'), (4 , 'true'), (4 , 'false'), (5 , 'true'), (5 , 'false'); +SHOW CREATE TABLE t2; +INSERT INTO t1 (b,c) SELECT n,o FROM t2 ; +SHOW CREATE TABLE t1; +INSERT INTO t1 (b,c) SELECT n,o FROM t2 ; +SELECT * FROM t1; +SHOW CREATE TABLE t1; +INSERT INTO t1 (b,c) SELECT n,o FROM t2 WHERE o = 'false'; +SELECT * FROM t1; +SHOW CREATE TABLE t1; +INSERT INTO t1 (b,c) SELECT n,o FROM t2 WHERE o = 'false'; +SELECT * FROM t1; +SHOW CREATE TABLE t1; +INSERT INTO t1 (b,c) SELECT n,o FROM t2 WHERE o = 'false'; +SHOW CREATE TABLE t1; +INSERT INTO t1 (b,c) SELECT n,o FROM t2 WHERE o = 'false'; +SHOW CREATE TABLE t1; +INSERT INTO t1 (b,c) SELECT n,o FROM t2 WHERE o = 'false'; +SELECT * FROM t1; +SHOW CREATE TABLE t1; +DROP TABLE t1; +DROP TABLE t2; +# +# 43203: Overflow from auto incrementing causes server segv +# + +DROP TABLE IF EXISTS t1; +DROP TABLE IF EXISTS t2; +CREATE TABLE t1( + c1 INT(10) UNSIGNED NOT NULL AUTO_INCREMENT + PRIMARY KEY) ENGINE=InnoDB; +INSERT INTO t1 VALUES (NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL); +CREATE TABLE t2( + c1 TINYINT(3) UNSIGNED NOT NULL AUTO_INCREMENT + PRIMARY KEY) ENGINE=InnoDB; +-- error ER_DUP_ENTRY,1062 +INSERT INTO t2 SELECT c1 FROM t1; +-- error ER_DUP_ENTRY,1467 +INSERT INTO t2 SELECT NULL FROM t1; +DROP TABLE t1; +DROP TABLE t2; === removed file 'mysql-test/t/innodb-autoinc.test' --- a/mysql-test/t/innodb-autoinc.test 2009-04-25 09:04:38 +0000 +++ b/mysql-test/t/innodb-autoinc.test 1970-01-01 00:00:00 +0000 @@ -1,480 +0,0 @@ --- source include/have_innodb.inc -# embedded server ignores 'delayed', so skip this --- source include/not_embedded.inc - ---disable_warnings -drop table if exists t1; ---enable_warnings - -# -# Bug #34335 -# -CREATE TABLE t1 (c1 BIGINT PRIMARY KEY AUTO_INCREMENT, c2 VARCHAR(10)) ENGINE=InnoDB; -INSERT INTO t1 VALUES (9223372036854775807, null); --- error ER_DUP_ENTRY,1062 -INSERT INTO t1 (c2) VALUES ('innodb'); -SELECT * FROM t1; -DROP TABLE t1; -# -## Test AUTOINC overflow -## - -# TINYINT -CREATE TABLE t1 (c1 TINYINT PRIMARY KEY AUTO_INCREMENT, c2 VARCHAR(10)) ENGINE=InnoDB; -INSERT INTO t1 VALUES (127, null); --- error ER_DUP_ENTRY,1062 -INSERT INTO t1 (c2) VALUES ('innodb'); -SELECT * FROM t1; -DROP TABLE t1; - -CREATE TABLE t1 (c1 TINYINT UNSIGNED PRIMARY KEY AUTO_INCREMENT, c2 VARCHAR(10)) ENGINE=InnoDB; -INSERT INTO t1 VALUES (255, null); --- error ER_DUP_ENTRY,1062 -INSERT INTO t1 (c2) VALUES ('innodb'); -SELECT * FROM t1; -DROP TABLE t1; -# -# SMALLINT -# -CREATE TABLE t1 (c1 SMALLINT PRIMARY KEY AUTO_INCREMENT, c2 VARCHAR(10)) ENGINE=InnoDB; -INSERT INTO t1 VALUES (32767, null); --- error ER_DUP_ENTRY,1062 -INSERT INTO t1 (c2) VALUES ('innodb'); -SELECT * FROM t1; -DROP TABLE t1; - -CREATE TABLE t1 (c1 SMALLINT UNSIGNED PRIMARY KEY AUTO_INCREMENT, c2 VARCHAR(10)) ENGINE=InnoDB; -INSERT INTO t1 VALUES (65535, null); --- error ER_DUP_ENTRY,1062 -INSERT INTO t1 (c2) VALUES ('innodb'); -SELECT * FROM t1; -DROP TABLE t1; -# -# MEDIUMINT -# -CREATE TABLE t1 (c1 MEDIUMINT PRIMARY KEY AUTO_INCREMENT, c2 VARCHAR(10)) ENGINE=InnoDB; -INSERT INTO t1 VALUES (8388607, null); --- error ER_DUP_ENTRY,1062 -INSERT INTO t1 (c2) VALUES ('innodb'); -SELECT * FROM t1; -DROP TABLE t1; - -CREATE TABLE t1 (c1 MEDIUMINT UNSIGNED PRIMARY KEY AUTO_INCREMENT, c2 VARCHAR(10)) ENGINE=InnoDB; -INSERT INTO t1 VALUES (16777215, null); --- error ER_DUP_ENTRY,1062 -INSERT INTO t1 (c2) VALUES ('innodb'); -SELECT * FROM t1; -DROP TABLE t1; -# -# INT -# -CREATE TABLE t1 (c1 INT PRIMARY KEY AUTO_INCREMENT, c2 VARCHAR(10)) ENGINE=InnoDB; -INSERT INTO t1 VALUES (2147483647, null); --- error ER_DUP_ENTRY,1062 -INSERT INTO t1 (c2) VALUES ('innodb'); -SELECT * FROM t1; -DROP TABLE t1; - -CREATE TABLE t1 (c1 INT UNSIGNED PRIMARY KEY AUTO_INCREMENT, c2 VARCHAR(10)) ENGINE=InnoDB; -INSERT INTO t1 VALUES (4294967295, null); --- error ER_DUP_ENTRY,1062 -INSERT INTO t1 (c2) VALUES ('innodb'); -SELECT * FROM t1; -DROP TABLE t1; -# -# BIGINT -# -CREATE TABLE t1 (c1 BIGINT PRIMARY KEY AUTO_INCREMENT, c2 VARCHAR(10)) ENGINE=InnoDB; -INSERT INTO t1 VALUES (9223372036854775807, null); --- error ER_DUP_ENTRY,1062 -INSERT INTO t1 (c2) VALUES ('innodb'); -SELECT * FROM t1; -DROP TABLE t1; - -CREATE TABLE t1 (c1 BIGINT UNSIGNED PRIMARY KEY AUTO_INCREMENT, c2 VARCHAR(10)) ENGINE=InnoDB; -INSERT INTO t1 VALUES (18446744073709551615, null); --- error ER_AUTOINC_READ_FAILED,1467 -INSERT INTO t1 (c2) VALUES ('innodb'); -SELECT * FROM t1; -DROP TABLE t1; - -# -# Bug 37531 -# After truncate, auto_increment behaves incorrectly for InnoDB -# -CREATE TABLE t1(c1 INT PRIMARY KEY AUTO_INCREMENT) ENGINE=InnoDB; -INSERT INTO t1 VALUES (1), (2), (3); -INSERT INTO t1 VALUES (NULL), (NULL), (NULL); -SELECT c1 FROM t1; -SHOW CREATE TABLE t1; -TRUNCATE TABLE t1; -SHOW CREATE TABLE t1; -INSERT INTO t1 VALUES (1), (2), (3); -INSERT INTO t1 VALUES (NULL), (NULL), (NULL); -SELECT c1 FROM t1; -SHOW CREATE TABLE t1; -DROP TABLE t1; - -# -# Deleting all records should not reset the AUTOINC counter. -# -CREATE TABLE t1(c1 INT PRIMARY KEY AUTO_INCREMENT) ENGINE=InnoDB; -INSERT INTO t1 VALUES (1), (2), (3); -INSERT INTO t1 VALUES (NULL), (NULL), (NULL); -SELECT c1 FROM t1; -SHOW CREATE TABLE t1; -DELETE FROM t1; -SHOW CREATE TABLE t1; -INSERT INTO t1 VALUES (1), (2), (3); -INSERT INTO t1 VALUES (NULL), (NULL), (NULL); -SELECT c1 FROM t1; -SHOW CREATE TABLE t1; -DROP TABLE t1; - -# -# Bug 38839 -# Reset the last value generated at end of statement -# -DROP TABLE IF EXISTS t1; -CREATE TABLE t1 (c1 INT AUTO_INCREMENT, c2 INT, PRIMARY KEY(c1)) ENGINE=InnoDB; -INSERT INTO t1 VALUES (NULL, 1); -DELETE FROM t1 WHERE c1 = 1; -INSERT INTO t1 VALUES (2,1); -INSERT INTO t1 VALUES (NULL,8); -SELECT * FROM t1; -DROP TABLE t1; -# Bug 38839 -- same as above but for multi value insert -DROP TABLE IF EXISTS t1; -CREATE TABLE t1 (c1 INT AUTO_INCREMENT, c2 INT, PRIMARY KEY(c1)) ENGINE=InnoDB; -INSERT INTO t1 VALUES (NULL, 1); -DELETE FROM t1 WHERE c1 = 1; -INSERT INTO t1 VALUES (2,1), (NULL, 8); -INSERT INTO t1 VALUES (NULL,9); -SELECT * FROM t1; -DROP TABLE t1; - -# -# Test changes to AUTOINC next value calculation -SET @@SESSION.AUTO_INCREMENT_INCREMENT=100, @@SESSION.AUTO_INCREMENT_OFFSET=10; -SHOW VARIABLES LIKE "auto_inc%"; -DROP TABLE IF EXISTS t1; -CREATE TABLE t1 (c1 INT AUTO_INCREMENT, PRIMARY KEY(c1)) ENGINE=InnoDB; -INSERT INTO t1 VALUES (NULL),(5),(NULL); -INSERT INTO t1 VALUES (250),(NULL); -SELECT * FROM t1; -INSERT INTO t1 VALUES (1000); -SET @@INSERT_ID=400; -INSERT INTO t1 VALUES(NULL),(NULL); -SELECT * FROM t1; -DROP TABLE t1; - -# Test with SIGNED INT column, by inserting a 0 for the first column value -# 0 is treated in the same was NULL. -# Reset the AUTOINC session variables -SET @@SESSION.AUTO_INCREMENT_INCREMENT=1, @@SESSION.AUTO_INCREMENT_OFFSET=1; -SET @@INSERT_ID=1; -SHOW VARIABLES LIKE "auto_inc%"; -DROP TABLE IF EXISTS t1; -CREATE TABLE t1 (c1 INT AUTO_INCREMENT, PRIMARY KEY(c1)) ENGINE=InnoDB; -INSERT INTO t1 VALUES(0); -SELECT * FROM t1; -SET @@SESSION.AUTO_INCREMENT_INCREMENT=100, @@SESSION.AUTO_INCREMENT_OFFSET=10; -INSERT INTO t1 VALUES (-1), (NULL),(2),(NULL); -INSERT INTO t1 VALUES (250),(NULL); -SELECT * FROM t1; -SET @@INSERT_ID=400; -# Duplicate error expected here for autoinc_lock_mode != TRADITIONAL --- error ER_DUP_ENTRY,1062 -INSERT INTO t1 VALUES(NULL),(NULL); -SELECT * FROM t1; -DROP TABLE t1; - -# Test with SIGNED INT column -# Reset the AUTOINC session variables -SET @@SESSION.AUTO_INCREMENT_INCREMENT=1, @@SESSION.AUTO_INCREMENT_OFFSET=1; -SET @@INSERT_ID=1; -SHOW VARIABLES LIKE "auto_inc%"; -DROP TABLE IF EXISTS t1; -CREATE TABLE t1 (c1 INT AUTO_INCREMENT, PRIMARY KEY(c1)) ENGINE=InnoDB; -INSERT INTO t1 VALUES(-1); -SELECT * FROM t1; -SET @@SESSION.AUTO_INCREMENT_INCREMENT=100, @@SESSION.AUTO_INCREMENT_OFFSET=10; -SHOW VARIABLES LIKE "auto_inc%"; -INSERT INTO t1 VALUES (-2), (NULL),(2),(NULL); -INSERT INTO t1 VALUES (250),(NULL); -SELECT * FROM t1; -INSERT INTO t1 VALUES (1000); -SET @@INSERT_ID=400; -INSERT INTO t1 VALUES(NULL),(NULL); -SELECT * FROM t1; -DROP TABLE t1; - -# Test with UNSIGNED INT column, single insert -# The sign in the value is ignored and a new column value is generated -# Reset the AUTOINC session variables -SET @@SESSION.AUTO_INCREMENT_INCREMENT=1, @@SESSION.AUTO_INCREMENT_OFFSET=1; -SET @@INSERT_ID=1; -SHOW VARIABLES LIKE "auto_inc%"; -DROP TABLE IF EXISTS t1; -CREATE TABLE t1 (c1 INT UNSIGNED AUTO_INCREMENT, PRIMARY KEY(c1)) ENGINE=InnoDB; -INSERT INTO t1 VALUES(-1); -SELECT * FROM t1; -SET @@SESSION.AUTO_INCREMENT_INCREMENT=100, @@SESSION.AUTO_INCREMENT_OFFSET=10; -SHOW VARIABLES LIKE "auto_inc%"; -INSERT INTO t1 VALUES (-2); -INSERT INTO t1 VALUES (NULL); -INSERT INTO t1 VALUES (2); -INSERT INTO t1 VALUES (NULL); -INSERT INTO t1 VALUES (250); -INSERT INTO t1 VALUES (NULL); -SELECT * FROM t1; -INSERT INTO t1 VALUES (1000); -SET @@INSERT_ID=400; -INSERT INTO t1 VALUES(NULL); -INSERT INTO t1 VALUES(NULL); -SELECT * FROM t1; -DROP TABLE t1; - -# Test with UNSIGNED INT column, multi-value inserts -# The sign in the value is ignored and a new column value is generated -# Reset the AUTOINC session variables -SET @@SESSION.AUTO_INCREMENT_INCREMENT=1, @@SESSION.AUTO_INCREMENT_OFFSET=1; -SET @@INSERT_ID=1; -SHOW VARIABLES LIKE "auto_inc%"; -DROP TABLE IF EXISTS t1; -CREATE TABLE t1 (c1 INT UNSIGNED AUTO_INCREMENT, PRIMARY KEY(c1)) ENGINE=InnoDB; -INSERT INTO t1 VALUES(-1); -SELECT * FROM t1; -SET @@SESSION.AUTO_INCREMENT_INCREMENT=100, @@SESSION.AUTO_INCREMENT_OFFSET=10; -SHOW VARIABLES LIKE "auto_inc%"; -INSERT INTO t1 VALUES (-2),(NULL),(2),(NULL); -INSERT INTO t1 VALUES (250),(NULL); -SELECT * FROM t1; -INSERT INTO t1 VALUES (1000); -SET @@INSERT_ID=400; -# Duplicate error expected here for autoinc_lock_mode != TRADITIONAL --- error ER_DUP_ENTRY,1062 -INSERT INTO t1 VALUES(NULL),(NULL); -SELECT * FROM t1; -DROP TABLE t1; - -# -# Check for overflow handling when increment is > 1 -SET @@SESSION.AUTO_INCREMENT_INCREMENT=1, @@SESSION.AUTO_INCREMENT_OFFSET=1; -SET @@INSERT_ID=1; -SHOW VARIABLES LIKE "auto_inc%"; -DROP TABLE IF EXISTS t1; -CREATE TABLE t1 (c1 BIGINT AUTO_INCREMENT, PRIMARY KEY(c1)) ENGINE=InnoDB; -# TODO: Fix the autoinc init code -# We have to do this because of a bug in the AUTOINC init code. -INSERT INTO t1 VALUES(NULL); -INSERT INTO t1 VALUES (9223372036854775794); #-- 2^63 - 14 -SELECT * FROM t1; -SET @@SESSION.AUTO_INCREMENT_INCREMENT=2, @@SESSION.AUTO_INCREMENT_OFFSET=10; -SHOW VARIABLES LIKE "auto_inc%"; -# This should just fit -INSERT INTO t1 VALUES (NULL),(NULL),(NULL),(NULL),(NULL),(NULL); -SELECT * FROM t1; -DROP TABLE t1; - -# -# Check for overflow handling when increment and offser are > 1 -SET @@SESSION.AUTO_INCREMENT_INCREMENT=1, @@SESSION.AUTO_INCREMENT_OFFSET=1; -SET @@INSERT_ID=1; -SHOW VARIABLES LIKE "auto_inc%"; -DROP TABLE IF EXISTS t1; -CREATE TABLE t1 (c1 BIGINT UNSIGNED AUTO_INCREMENT, PRIMARY KEY(c1)) ENGINE=InnoDB; -# TODO: Fix the autoinc init code -# We have to do this because of a bug in the AUTOINC init code. -INSERT INTO t1 VALUES(NULL); -INSERT INTO t1 VALUES (18446744073709551603); #-- 2^64 - 13 -SELECT * FROM t1; -SET @@SESSION.AUTO_INCREMENT_INCREMENT=2, @@SESSION.AUTO_INCREMENT_OFFSET=10; -SHOW VARIABLES LIKE "auto_inc%"; -# This should fail because of overflow but it doesn't, it seems to be -# a MySQL server bug. It wraps around to 0 for the last value. -# See MySQL Bug# 39828 -# -# Instead of wrapping around, it asserts when MySQL is compiled --with-debug -# (see sql/handler.cc:handler::update_auto_increment()). Don't test for -# overflow until Bug #39828 is fixed. -# -# Since this asserts when compiled --with-debug, we can't properly test this -# until Bug #39828 is fixed. For now, this test is meaningless. -#if Bug #39828 is fixed -#INSERT INTO t1 VALUES (NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL); -#else -INSERT INTO t1 VALUES (NULL),(NULL),(NULL),(NULL),(NULL),(NULL); -#endif -SELECT * FROM t1; -DROP TABLE t1; - -# -# Check for overflow handling when increment and offset are odd numbers -SET @@SESSION.AUTO_INCREMENT_INCREMENT=1, @@SESSION.AUTO_INCREMENT_OFFSET=1; -SET @@INSERT_ID=1; -SHOW VARIABLES LIKE "auto_inc%"; -DROP TABLE IF EXISTS t1; -CREATE TABLE t1 (c1 BIGINT UNSIGNED AUTO_INCREMENT, PRIMARY KEY(c1)) ENGINE=InnoDB; -# TODO: Fix the autoinc init code -# We have to do this because of a bug in the AUTOINC init code. -INSERT INTO t1 VALUES(NULL); -INSERT INTO t1 VALUES (18446744073709551603); #-- 2^64 - 13 -SELECT * FROM t1; -SET @@SESSION.AUTO_INCREMENT_INCREMENT=5, @@SESSION.AUTO_INCREMENT_OFFSET=7; -SHOW VARIABLES LIKE "auto_inc%"; -# This should fail because of overflow but it doesn't. It fails with -# a duplicate entry message because of a MySQL server bug, it wraps -# around. See MySQL Bug# 39828, once MySQL fix the bug we can replace -# the ER_DUP_ENTRY, 1062 below with the appropriate error message -# -# Since this asserts when compiled --with-debug, we can't properly test this -# until Bug #39828 is fixed. For now, this test is meaningless. -#if Bug #39828 is fixed -# Still need to fix this error code, error should mention overflow -#-- error ER_DUP_ENTRY,1062 -#INSERT INTO t1 VALUES (NULL),(NULL), (NULL); -#else -INSERT INTO t1 VALUES (NULL),(NULL); -#endif -SELECT * FROM t1; -DROP TABLE t1; - -# Check for overflow handling when increment and offset are odd numbers -# and check for large -ve numbers -SET @@SESSION.AUTO_INCREMENT_INCREMENT=1, @@SESSION.AUTO_INCREMENT_OFFSET=1; -SET @@INSERT_ID=1; -SHOW VARIABLES LIKE "auto_inc%"; -DROP TABLE IF EXISTS t1; -CREATE TABLE t1 (c1 BIGINT AUTO_INCREMENT, PRIMARY KEY(c1)) ENGINE=InnoDB; -# TODO: Fix the autoinc init code -# We have to do this because of a bug in the AUTOINC init code. -INSERT INTO t1 VALUES(NULL); -INSERT INTO t1 VALUES(-9223372036854775806); #-- -2^63 + 2 -INSERT INTO t1 VALUES(-9223372036854775807); #-- -2^63 + 1 -INSERT INTO t1 VALUES(-9223372036854775808); #-- -2^63 -SELECT * FROM t1; -SET @@SESSION.AUTO_INCREMENT_INCREMENT=3, @@SESSION.AUTO_INCREMENT_OFFSET=3; -SHOW VARIABLES LIKE "auto_inc%"; -INSERT INTO t1 VALUES (NULL),(NULL), (NULL); -SELECT * FROM t1; -DROP TABLE t1; -# -# Check for overflow handling when increment and offset are very -# large numbers 2^60 -SET @@SESSION.AUTO_INCREMENT_INCREMENT=1, @@SESSION.AUTO_INCREMENT_OFFSET=1; -SET @@INSERT_ID=1; -SHOW VARIABLES LIKE "auto_inc%"; -DROP TABLE IF EXISTS t1; -CREATE TABLE t1 (c1 BIGINT UNSIGNED AUTO_INCREMENT, PRIMARY KEY(c1)) ENGINE=InnoDB; -# TODO: Fix the autoinc init code -# We have to do this because of a bug in the AUTOINC init code. -INSERT INTO t1 VALUES(NULL); -INSERT INTO t1 VALUES (18446744073709551610); #-- 2^64 - 2 -SELECT * FROM t1; -SET @@SESSION.AUTO_INCREMENT_INCREMENT=1152921504606846976, @@SESSION.AUTO_INCREMENT_OFFSET=1152921504606846976; -SHOW VARIABLES LIKE "auto_inc%"; -# This should fail because of overflow but it doesn't. It wraps around -# and the autoinc values look bogus too. -# See MySQL Bug# 39828, once MySQL fix the bug we can enable the error -# code expected test. -# -- error ER_AUTOINC_READ_FAILED,1467 -# -# Since this asserts when compiled --with-debug, we can't properly test this -# until Bug #39828 is fixed. For now, this test is meaningless. -#if Bug #39828 is fixed -#-- error ER_AUTOINC_READ_FAILED,1467 -#INSERT INTO t1 VALUES (NULL),(NULL); -#else -INSERT INTO t1 VALUES (NULL); -#endif -SELECT * FROM t1; -DROP TABLE t1; - -# -# Check for floating point autoinc column handling -# -SET @@SESSION.AUTO_INCREMENT_INCREMENT=1, @@SESSION.AUTO_INCREMENT_OFFSET=1; -SET @@INSERT_ID=1; -SHOW VARIABLES LIKE "%auto_inc%"; -CREATE TABLE t1 (c1 DOUBLE NOT NULL AUTO_INCREMENT, c2 INT, PRIMARY KEY (c1)) ENGINE=InnoDB; -INSERT INTO t1 VALUES(NULL, 1); -INSERT INTO t1 VALUES(NULL, 2); -SELECT * FROM t1; -ALTER TABLE t1 CHANGE c1 c1 SERIAL; -SELECT * FROM t1; -INSERT INTO t1 VALUES(NULL, 3); -INSERT INTO t1 VALUES(NULL, 4); -SELECT * FROM t1; -DROP TABLE IF EXISTS t1; -CREATE TABLE t1 (c1 FLOAT NOT NULL AUTO_INCREMENT, c2 INT, PRIMARY KEY (c1)) ENGINE=InnoDB; -INSERT INTO t1 VALUES(NULL, 1); -INSERT INTO t1 VALUES(NULL, 2); -SELECT * FROM t1; -ALTER TABLE t1 CHANGE c1 c1 SERIAL; -SELECT * FROM t1; -INSERT INTO t1 VALUES(NULL, 3); -INSERT INTO t1 VALUES(NULL, 4); -SELECT * FROM t1; -DROP TABLE t1; - -# -# Bug# 42714: AUTOINC column calculated next value not greater than highest -# value stored in table. -# -SET @@SESSION.AUTO_INCREMENT_INCREMENT=1, @@SESSION.AUTO_INCREMENT_OFFSET=5; -DROP TABLE IF EXISTS t1; -DROP TABLE IF EXISTS t2; -CREATE TABLE t1 ( - a INT(11) UNSIGNED NOT NULL AUTO_INCREMENT, - b INT(10) UNSIGNED NOT NULL, - c ENUM('FALSE','TRUE') DEFAULT NULL, - PRIMARY KEY (a)) ENGINE = InnoDB; -CREATE TABLE t2 ( - m INT(11) UNSIGNED NOT NULL AUTO_INCREMENT, - n INT(10) UNSIGNED NOT NULL, - o enum('FALSE','TRUE') DEFAULT NULL, - PRIMARY KEY (m)) ENGINE = InnoDB; -INSERT INTO t2 (n,o) VALUES - (1 , 'true'), (1 , 'false'), (2 , 'true'), (2 , 'false'), (3 , 'true'), - (3 , 'false'), (4 , 'true'), (4 , 'false'), (5 , 'true'), (5 , 'false'); -SHOW CREATE TABLE t2; -INSERT INTO t1 (b,c) SELECT n,o FROM t2 ; -SHOW CREATE TABLE t1; -INSERT INTO t1 (b,c) SELECT n,o FROM t2 ; -SELECT * FROM t1; -SHOW CREATE TABLE t1; -INSERT INTO t1 (b,c) SELECT n,o FROM t2 WHERE o = 'false'; -SELECT * FROM t1; -SHOW CREATE TABLE t1; -INSERT INTO t1 (b,c) SELECT n,o FROM t2 WHERE o = 'false'; -SELECT * FROM t1; -SHOW CREATE TABLE t1; -INSERT INTO t1 (b,c) SELECT n,o FROM t2 WHERE o = 'false'; -SHOW CREATE TABLE t1; -INSERT INTO t1 (b,c) SELECT n,o FROM t2 WHERE o = 'false'; -SHOW CREATE TABLE t1; -INSERT INTO t1 (b,c) SELECT n,o FROM t2 WHERE o = 'false'; -SELECT * FROM t1; -SHOW CREATE TABLE t1; -DROP TABLE t1; -DROP TABLE t2; -# -# 43203: Overflow from auto incrementing causes server segv -# - -DROP TABLE IF EXISTS t1; -DROP TABLE IF EXISTS t2; -CREATE TABLE t1( - c1 INT(10) UNSIGNED NOT NULL AUTO_INCREMENT - PRIMARY KEY) ENGINE=InnoDB; -INSERT INTO t1 VALUES (NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL); -CREATE TABLE t2( - c1 TINYINT(3) UNSIGNED NOT NULL AUTO_INCREMENT - PRIMARY KEY) ENGINE=InnoDB; --- error ER_DUP_ENTRY,1062 -INSERT INTO t2 SELECT c1 FROM t1; --- error ER_DUP_ENTRY,1467 -INSERT INTO t2 SELECT NULL FROM t1; -DROP TABLE t1; -DROP TABLE t2; === added file 'mysql-test/t/innodb-index.test' --- a/mysql-test/t/innodb-index.test 1970-01-01 00:00:00 +0000 +++ b/mysql-test/t/innodb-index.test 2009-06-11 12:53:26 +0000 @@ -0,0 +1,516 @@ +-- source include/have_innodb.inc + +SET @save_innodb_file_format_check=@@global.innodb_file_format_check; + +create table t1(a int not null, b int, c char(10) not null, d varchar(20)) engine = innodb; +insert into t1 values (5,5,'oo','oo'),(4,4,'tr','tr'),(3,4,'ad','ad'),(2,3,'ak','ak'); +commit; +--error ER_DUP_KEYNAME +alter table t1 add index b (b), add index b (b); +--error ER_DUP_FIELDNAME +alter table t1 add index (b,b); +alter table t1 add index d2 (d); +show create table t1; +explain select * from t1 force index(d2) order by d; +select * from t1 force index (d2) order by d; +--error ER_DUP_ENTRY +alter table t1 add unique index (b); +show create table t1; +alter table t1 add index (b); +show create table t1; + +# Check how existing tables interfere with temporary tables. +CREATE TABLE `t1#1`(a INT PRIMARY KEY) ENGINE=InnoDB; + +call mtr.add_suppression(" table `test`\\.`t1#[12]` already exists in InnoDB internal"); + +--error 156 +alter table t1 add unique index (c), add index (d); +rename table `t1#1` to `t1#2`; +--error 156 +alter table t1 add unique index (c), add index (d); +drop table `t1#2`; + +alter table t1 add unique index (c), add index (d); +show create table t1; +explain select * from t1 force index(c) order by c; +alter table t1 add primary key (a), drop index c; +show create table t1; +--error ER_MULTIPLE_PRI_KEY +alter table t1 add primary key (c); +--error ER_DUP_ENTRY +alter table t1 drop primary key, add primary key (b); +create unique index c on t1 (c); +show create table t1; +explain select * from t1 force index(c) order by c; +select * from t1 force index(c) order by c; +alter table t1 drop index b, add index (b); +show create table t1; +insert into t1 values(6,1,'ggg','ggg'); +select * from t1; +select * from t1 force index(b) order by b; +select * from t1 force index(c) order by c; +select * from t1 force index(d) order by d; +explain select * from t1 force index(b) order by b; +explain select * from t1 force index(c) order by c; +explain select * from t1 force index(d) order by d; +show create table t1; +drop table t1; + +create table t1(a int not null, b int, c char(10), d varchar(20), primary key (a)) engine = innodb; +insert into t1 values (1,1,'ab','ab'),(2,2,'ac','ac'),(3,3,'ad','ad'),(4,4,'afe','afe'); +commit; +alter table t1 add index (c(2)); +show create table t1; +alter table t1 add unique index (d(10)); +show create table t1; +insert into t1 values(5,1,'ggg','ggg'); +select * from t1; +select * from t1 force index(c) order by c; +select * from t1 force index(d) order by d; +explain select * from t1 order by b; +explain select * from t1 force index(c) order by c; +explain select * from t1 force index(d) order by d; +show create table t1; +alter table t1 drop index d; +insert into t1 values(8,9,'fff','fff'); +select * from t1; +select * from t1 force index(c) order by c; +explain select * from t1 order by b; +explain select * from t1 force index(c) order by c; +explain select * from t1 order by d; +show create table t1; +drop table t1; + +create table t1(a int not null, b int, c char(10), d varchar(20), primary key (a)) engine = innodb; +insert into t1 values (1,1,'ab','ab'),(2,2,'ac','ac'),(3,2,'ad','ad'),(4,4,'afe','afe'); +commit; +alter table t1 add unique index (b,c); +insert into t1 values(8,9,'fff','fff'); +select * from t1; +select * from t1 force index(b) order by b; +explain select * from t1 force index(b) order by b; +show create table t1; +alter table t1 add index (b,c); +insert into t1 values(11,11,'kkk','kkk'); +select * from t1; +select * from t1 force index(b) order by b; +explain select * from t1 force index(b) order by b; +show create table t1; +alter table t1 add unique index (c,d); +insert into t1 values(13,13,'yyy','aaa'); +select * from t1; +select * from t1 force index(b) order by b; +select * from t1 force index(c) order by c; +explain select * from t1 force index(b) order by b; +explain select * from t1 force index(c) order by c; +show create table t1; +drop table t1; + +create table t1(a int not null, b int not null, c int, primary key (a), key (b)) engine = innodb; +create table t3(a int not null, c int not null, d int, primary key (a), key (c)) engine = innodb; +create table t4(a int not null, d int not null, e int, primary key (a), key (d)) engine = innodb; +create table t2(a int not null, b int not null, c int not null, d int not null, e int, +foreign key (b) references t1(b) on delete cascade, +foreign key (c) references t3(c), foreign key (d) references t4(d)) +engine = innodb; +--error ER_DROP_INDEX_FK +alter table t1 drop index b; +--error ER_DROP_INDEX_FK +alter table t3 drop index c; +--error ER_DROP_INDEX_FK +alter table t4 drop index d; +--error ER_DROP_INDEX_FK +alter table t2 drop index b; +--error ER_DROP_INDEX_FK +alter table t2 drop index b, drop index c, drop index d; +# Apparently, the following makes mysql_alter_table() drop index d. +create unique index dc on t2 (d,c); +create index dc on t1 (b,c); +# This should preserve the foreign key constraints. +alter table t2 add primary key (a); +insert into t1 values (1,1,1); +insert into t3 values (1,1,1); +insert into t4 values (1,1,1); +insert into t2 values (1,1,1,1,1); +commit; +alter table t4 add constraint dc foreign key (a) references t1(a); +show create table t4; +--replace_regex /'test\.#sql-[0-9a-f_]*'/'#sql-temporary'/ +# a foreign key 'test/dc' already exists +--error ER_CANT_CREATE_TABLE +alter table t3 add constraint dc foreign key (a) references t1(a); +show create table t3; +alter table t2 drop index b, add index (b); +show create table t2; +--error ER_ROW_IS_REFERENCED_2 +delete from t1; +--error ER_CANT_DROP_FIELD_OR_KEY +drop index dc on t4; +# there is no foreign key dc on t3 +--replace_regex /'\.\/test\/#sql2-[0-9a-f-]*'/'#sql2-temporary'/ +--error ER_ERROR_ON_RENAME +alter table t3 drop foreign key dc; +alter table t4 drop foreign key dc; +select * from t2; +delete from t1; +select * from t2; + +drop table t2,t4,t3,t1; + +-- let charset = utf8 +-- source include/innodb-index.inc + +create table t1(a int not null, b int) engine = innodb; +insert into t1 values (1,1),(1,1),(1,1),(1,1); +--error ER_DUP_ENTRY +alter table t1 add unique index (a); +--error ER_DUP_ENTRY +alter table t1 add unique index (b); +--error ER_DUP_ENTRY +alter table t1 add unique index (a), add unique index(b); +show create table t1; +drop table t1; + +create table t1(a int not null, c int not null,b int, primary key(a), unique key(c), key(b)) engine = innodb; +alter table t1 drop index c, drop index b; +show create table t1; +drop table t1; + +create table t1(a int not null, b int, primary key(a)) engine = innodb; +alter table t1 add index (b); +show create table t1; +drop table t1; + +create table t1(a int not null, b int, c char(10), d varchar(20), primary key (a)) engine = innodb; +insert into t1 values (1,1,'ab','ab'),(2,2,'ac','ac'),(3,3,'ac','ac'),(4,4,'afe','afe'),(5,4,'affe','affe'); +--error ER_DUP_ENTRY +alter table t1 add unique index (b), add unique index (c), add unique index (d); +--error ER_DUP_ENTRY +alter table t1 add unique index (c), add unique index (b), add index (d); +show create table t1; +drop table t1; + +create table t1(a int not null, b int not null, c int, primary key (a), key(c)) engine=innodb; +insert into t1 values (5,1,5),(4,2,4),(3,3,3),(2,4,2),(1,5,1); +alter table t1 add unique index (b); +insert into t1 values (10,20,20),(11,19,19),(12,18,18),(13,17,17); +show create table t1; +check table t1; +explain select * from t1 force index(c) order by c; +explain select * from t1 order by a; +explain select * from t1 force index(b) order by b; +select * from t1 order by a; +select * from t1 force index(b) order by b; +select * from t1 force index(c) order by c; +drop table t1; + +create table t1(a int not null, b int not null) engine=innodb; +insert into t1 values (1,1); +alter table t1 add primary key(b); +insert into t1 values (2,2); +show create table t1; +check table t1; +select * from t1; +explain select * from t1; +explain select * from t1 order by a; +explain select * from t1 order by b; +checksum table t1; +drop table t1; + +create table t1(a int not null) engine=innodb; +insert into t1 values (1); +alter table t1 add primary key(a); +insert into t1 values (2); +show create table t1; +check table t1; +commit; +select * from t1; +explain select * from t1; +explain select * from t1 order by a; +drop table t1; + +create table t2(d varchar(17) primary key) engine=innodb default charset=utf8; +create table t3(a int primary key) engine=innodb; + +insert into t3 values(22),(44),(33),(55),(66); + +insert into t2 values ('jejdkrun87'),('adfd72nh9k'), +('adfdpplkeock'),('adfdijnmnb78k'),('adfdijn0loKNHJik'); + +create table t1(a int, b blob, c text, d text not null) +engine=innodb default charset = utf8; + +# r2667 The following test is disabled because MySQL behavior changed. +# r2667 The test was added with this comment: +# r2667 +# r2667 ------------------------------------------------------------------------ +# r2667 r1699 | marko | 2007-08-10 19:53:19 +0300 (Fri, 10 Aug 2007) | 5 lines +# r2667 +# r2667 branches/zip: Add changes that accidentally omitted from r1698: +# r2667 +# r2667 innodb-index.test, innodb-index.result: Add a test for creating +# r2667 a PRIMARY KEY on a column that contains a NULL value. +# r2667 ------------------------------------------------------------------------ +# r2667 +# r2667 but in BZR-r2667: +# r2667 http://bazaar.launchpad.net/~mysql/mysql-server/mysql-5.1/revision/davi%40m… +# r2667 MySQL changed the behavior to do full table copy when creating PRIMARY INDEX +# r2667 on a non-NULL column instead of calling ::add_index() which would fail (and +# r2667 this is what we were testing here). Before r2667 the code execution path was +# r2667 like this (when adding PRIMARY INDEX on a non-NULL column with ALTER TABLE): +# r2667 +# r2667 mysql_alter_table() +# r2667 compare_tables() // would return ALTER_TABLE_INDEX_CHANGED +# r2667 ::add_index() // would fail with "primary index cannot contain NULL" +# r2667 +# r2667 after r2667 the code execution path is the following: +# r2667 +# r2667 mysql_alter_table() +# r2667 compare_tables() // returns ALTER_TABLE_DATA_CHANGED +# r2667 full copy is done, without calling ::add_index() +# r2667 +# r2667 To enable, remove "# r2667: " below. +# r2667 +# r2667: insert into t1 values (null,null,null,'null'); +insert into t1 +select a,left(repeat(d,100*a),65535),repeat(d,20*a),d from t2,t3; +drop table t2, t3; +select count(*) from t1 where a=44; +select a, +length(b),b=left(repeat(d,100*a),65535),length(c),c=repeat(d,20*a),d from t1; +# r2667: --error ER_PRIMARY_CANT_HAVE_NULL +# r2667: alter table t1 add primary key (a), add key (b(20)); +# r2667: delete from t1 where d='null'; +--error ER_DUP_ENTRY +alter table t1 add primary key (a), add key (b(20)); +delete from t1 where a%2; +check table t1; +alter table t1 add primary key (a,b(255),c(255)), add key (b(767)); +select count(*) from t1 where a=44; +select a, +length(b),b=left(repeat(d,100*a),65535),length(c),c=repeat(d,20*a),d from t1; +show create table t1; +check table t1; +explain select * from t1 where b like 'adfd%'; + +# +# Test locking +# + +create table t2(a int, b varchar(255), primary key(a,b)) engine=innodb; +insert into t2 select a,left(b,255) from t1; +drop table t1; +rename table t2 to t1; + +connect (a,localhost,root,,); +connect (b,localhost,root,,); +connection a; +set innodb_lock_wait_timeout=1; +begin; +# Obtain an IX lock on the table +select a from t1 limit 1 for update; +connection b; +set innodb_lock_wait_timeout=1; +# This would require an S lock on the table, conflicting with the IX lock. +--error ER_LOCK_WAIT_TIMEOUT +create index t1ba on t1 (b,a); +connection a; +commit; +begin; +# Obtain an IS lock on the table +select a from t1 limit 1 lock in share mode; +connection b; +# This will require an S lock on the table. No conflict with the IS lock. +create index t1ba on t1 (b,a); +# This would require an X lock on the table, conflicting with the IS lock. +--error ER_LOCK_WAIT_TIMEOUT +drop index t1ba on t1; +connection a; +commit; +explain select a from t1 order by b; +--send +select a,sleep(2+a/100) from t1 order by b limit 3; + +# The following DROP INDEX will succeed, altough the SELECT above has +# opened a read view. However, during the execution of the SELECT, +# MySQL should hold a table lock that should block the execution +# of the DROP INDEX below. + +connection b; +select sleep(1); +drop index t1ba on t1; + +# After the index was dropped, subsequent SELECTs will use the same +# read view, but they should not be accessing the dropped index any more. + +connection a; +reap; +explain select a from t1 order by b; +select a from t1 order by b limit 3; +commit; + +connection default; +disconnect a; +disconnect b; + +drop table t1; + +let $per_table=`select @@innodb_file_per_table`; +let $format=`select @@innodb_file_format`; +set global innodb_file_per_table=on; +set global innodb_file_format='Barracuda'; +# Test creating a table that could lead to undo log overflow. +# In the undo log, we write a 768-byte prefix (REC_MAX_INDEX_COL_LEN) +# of each externally stored column that appears as a column prefix in an index. +# For this test case, it would suffice to write 1 byte, though. +create table t1(a blob,b blob,c blob,d blob,e blob,f blob,g blob,h blob, + i blob,j blob,k blob,l blob,m blob,n blob,o blob,p blob, + q blob,r blob,s blob,t blob,u blob) + engine=innodb row_format=dynamic; +create index t1a on t1 (a(1)); +create index t1b on t1 (b(1)); +create index t1c on t1 (c(1)); +create index t1d on t1 (d(1)); +create index t1e on t1 (e(1)); +create index t1f on t1 (f(1)); +create index t1g on t1 (g(1)); +create index t1h on t1 (h(1)); +create index t1i on t1 (i(1)); +create index t1j on t1 (j(1)); +create index t1k on t1 (k(1)); +create index t1l on t1 (l(1)); +create index t1m on t1 (m(1)); +create index t1n on t1 (n(1)); +create index t1o on t1 (o(1)); +create index t1p on t1 (p(1)); +create index t1q on t1 (q(1)); +create index t1r on t1 (r(1)); +create index t1s on t1 (s(1)); +create index t1t on t1 (t(1)); +--error 139 +create index t1u on t1 (u(1)); +--error 139 +create index t1ut on t1 (u(1), t(1)); +create index t1st on t1 (s(1), t(1)); +show create table t1; +--error 139 +create index t1u on t1 (u(1)); +alter table t1 row_format=compact; +create index t1u on t1 (u(1)); + +drop table t1; +eval set global innodb_file_per_table=$per_table; +eval set global innodb_file_format=$format; + +# +# Test to check whether CREATE INDEX handles implicit foreign key +# constraint modifications (Issue #70, Bug #38786) +# +SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS, UNIQUE_CHECKS=0; +SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0; + +CREATE TABLE t1( + c1 BIGINT(12) NOT NULL, + PRIMARY KEY (c1) +) ENGINE=InnoDB DEFAULT CHARSET=latin1; + +CREATE TABLE t2( + c1 BIGINT(16) NOT NULL, + c2 BIGINT(12) NOT NULL, + c3 BIGINT(12) NOT NULL, + PRIMARY KEY (c1) +) ENGINE=InnoDB DEFAULT CHARSET=latin1; + +ALTER TABLE t2 ADD CONSTRAINT fk_t2_ca + FOREIGN KEY (c3) REFERENCES t1(c1); + +SET FOREIGN_KEY_CHECKS=@OLD_FOREIGN_KEY_CHECKS; +SET UNIQUE_CHECKS=@OLD_UNIQUE_CHECKS; + +SHOW CREATE TABLE t2; + +CREATE INDEX i_t2_c3_c2 ON t2(c3, c2); + +SHOW CREATE TABLE t2; + +SET FOREIGN_KEY_CHECKS=@OLD_FOREIGN_KEY_CHECKS; +SET UNIQUE_CHECKS=@OLD_UNIQUE_CHECKS; + +--error ER_NO_REFERENCED_ROW_2 +INSERT INTO t2 VALUES(0,0,0); +INSERT INTO t1 VALUES(0); +INSERT INTO t2 VALUES(0,0,0); + +DROP TABLE t2; + +CREATE TABLE t2( + c1 BIGINT(16) NOT NULL, + c2 BIGINT(12) NOT NULL, + c3 BIGINT(12) NOT NULL, + PRIMARY KEY (c1,c2,c3) +) ENGINE=InnoDB DEFAULT CHARSET=latin1; + +ALTER TABLE t2 ADD CONSTRAINT fk_t2_ca + FOREIGN KEY (c3) REFERENCES t1(c1); + +SHOW CREATE TABLE t2; + +CREATE INDEX i_t2_c3_c2 ON t2(c3, c2); + +SHOW CREATE TABLE t2; +--error ER_NO_REFERENCED_ROW_2 +INSERT INTO t2 VALUES(0,0,1); +INSERT INTO t2 VALUES(0,0,0); +--error ER_ROW_IS_REFERENCED_2 +DELETE FROM t1; +DELETE FROM t2; + +DROP TABLE t2; +DROP TABLE t1; + +CREATE TABLE t1( + c1 BIGINT(12) NOT NULL, + c2 INT(4) NOT NULL, + PRIMARY KEY (c2,c1) +) ENGINE=InnoDB DEFAULT CHARSET=latin1; + +CREATE TABLE t2( + c1 BIGINT(16) NOT NULL, + c2 BIGINT(12) NOT NULL, + c3 BIGINT(12) NOT NULL, + PRIMARY KEY (c1) +) ENGINE=InnoDB DEFAULT CHARSET=latin1; + +--replace_regex /'test\.#sql-[0-9_a-f-]*'/'#sql-temporary'/ +--error ER_CANT_CREATE_TABLE +ALTER TABLE t2 ADD CONSTRAINT fk_t2_ca + FOREIGN KEY (c3,c2) REFERENCES t1(c1,c1); +--replace_regex /'test\.#sql-[0-9_a-f-]*'/'#sql-temporary'/ +--error ER_CANT_CREATE_TABLE +ALTER TABLE t2 ADD CONSTRAINT fk_t2_ca + FOREIGN KEY (c3,c2) REFERENCES t1(c1,c2); +--replace_regex /'test\.#sql-[0-9_a-f-]*'/'#sql-temporary'/ +--error ER_CANT_CREATE_TABLE +ALTER TABLE t2 ADD CONSTRAINT fk_t2_ca + FOREIGN KEY (c3,c2) REFERENCES t1(c2,c1); +ALTER TABLE t1 MODIFY COLUMN c2 BIGINT(12) NOT NULL; +--replace_regex /'test\.#sql-[0-9_a-f-]*'/'#sql-temporary'/ +--error ER_CANT_CREATE_TABLE +ALTER TABLE t2 ADD CONSTRAINT fk_t2_ca + FOREIGN KEY (c3,c2) REFERENCES t1(c1,c2); + +ALTER TABLE t2 ADD CONSTRAINT fk_t2_ca + FOREIGN KEY (c3,c2) REFERENCES t1(c2,c1); +SHOW CREATE TABLE t1; +SHOW CREATE TABLE t2; +CREATE INDEX i_t2_c2_c1 ON t2(c2, c1); +SHOW CREATE TABLE t2; +CREATE INDEX i_t2_c3_c1_c2 ON t2(c3, c1, c2); +SHOW CREATE TABLE t2; +CREATE INDEX i_t2_c3_c2 ON t2(c3, c2); +SHOW CREATE TABLE t2; + +DROP TABLE t2; +DROP TABLE t1; +SET GLOBAL innodb_file_format_check=@save_innodb_file_format_check; === added file 'mysql-test/t/innodb-index_ucs2.test' --- a/mysql-test/t/innodb-index_ucs2.test 1970-01-01 00:00:00 +0000 +++ b/mysql-test/t/innodb-index_ucs2.test 2009-06-09 13:19:13 +0000 @@ -0,0 +1,5 @@ +-- source include/have_innodb.inc +-- source include/have_ucs2.inc + +-- let charset = ucs2 +-- source include/innodb-index.inc === added file 'mysql-test/t/innodb-lock.test' --- a/mysql-test/t/innodb-lock.test 1970-01-01 00:00:00 +0000 +++ b/mysql-test/t/innodb-lock.test 2009-06-09 13:19:13 +0000 @@ -0,0 +1,102 @@ +-- source include/have_innodb.inc + +# +# Check and select innodb lock type +# + +set global innodb_table_locks=1; + +select @@innodb_table_locks; + +# +# Testing of explicit table locks with enforced table locks +# + +connect (con1,localhost,root,,); +connect (con2,localhost,root,,); + +--disable_warnings +drop table if exists t1; +--enable_warnings + +# +# Testing of explicit table locks with enforced table locks +# + +set @@innodb_table_locks=1; + +connection con1; +create table t1 (id integer, x integer) engine=INNODB; +insert into t1 values(0, 0); +set autocommit=0; +SELECT * from t1 where id = 0 FOR UPDATE; + +connection con2; +set autocommit=0; + +# The following statement should hang because con1 is locking the page +--send +lock table t1 write; +--sleep 2 + +connection con1; +update t1 set x=1 where id = 0; +select * from t1; +commit; + +connection con2; +reap; +update t1 set x=2 where id = 0; +commit; +unlock tables; + +connection con1; +select * from t1; +commit; + +drop table t1; + +# +# Try with old lock method (where LOCK TABLE is ignored by InnoDB) +# + +set @@innodb_table_locks=0; + +create table t1 (id integer primary key, x integer) engine=INNODB; +insert into t1 values(0, 0),(1,1),(2,2); +commit; +SELECT * from t1 where id = 0 FOR UPDATE; + +connection con2; +set autocommit=0; +set @@innodb_table_locks=0; + +# The following statement should work becase innodb doesn't check table locks +lock table t1 write; + +connection con1; + +# This will be locked by MySQL +--send +update t1 set x=10 where id = 2; +--sleep 2 + +connection con2; + +# Note that we will get a deadlock if we try to select any rows marked +# for update by con1 ! + +SELECT * from t1 where id = 2; +UPDATE t1 set x=3 where id = 2; +commit; +SELECT * from t1; +commit; +unlock tables; + +connection con1; +reap; +commit; +select * from t1; +drop table t1; + +# End of 4.1 tests === removed file 'mysql-test/t/innodb-lock.test' --- a/mysql-test/t/innodb-lock.test 2006-11-19 18:26:36 +0000 +++ b/mysql-test/t/innodb-lock.test 1970-01-01 00:00:00 +0000 @@ -1,102 +0,0 @@ --- source include/have_innodb.inc - -# -# Check and select innodb lock type -# - -set global innodb_table_locks=1; - -select @@innodb_table_locks; - -# -# Testing of explicit table locks with enforced table locks -# - -connect (con1,localhost,root,,); -connect (con2,localhost,root,,); - ---disable_warnings -drop table if exists t1; ---enable_warnings - -# -# Testing of explicit table locks with enforced table locks -# - -set @@innodb_table_locks=1; - -connection con1; -create table t1 (id integer, x integer) engine=INNODB; -insert into t1 values(0, 0); -set autocommit=0; -SELECT * from t1 where id = 0 FOR UPDATE; - -connection con2; -set autocommit=0; - -# The following statement should hang because con1 is locking the page ---send -lock table t1 write; ---sleep 2 - -connection con1; -update t1 set x=1 where id = 0; -select * from t1; -commit; - -connection con2; -reap; -update t1 set x=2 where id = 0; -commit; -unlock tables; - -connection con1; -select * from t1; -commit; - -drop table t1; - -# -# Try with old lock method (where LOCK TABLE is ignored by InnoDB) -# - -set @@innodb_table_locks=0; - -create table t1 (id integer primary key, x integer) engine=INNODB; -insert into t1 values(0, 0),(1,1),(2,2); -commit; -SELECT * from t1 where id = 0 FOR UPDATE; - -connection con2; -set autocommit=0; -set @@innodb_table_locks=0; - -# The following statement should work becase innodb doesn't check table locks -lock table t1 write; - -connection con1; - -# This will be locked by MySQL ---send -update t1 set x=10 where id = 2; ---sleep 2 - -connection con2; - -# Note that we will get a deadlock if we try to select any rows marked -# for update by con1 ! - -SELECT * from t1 where id = 2; -UPDATE t1 set x=3 where id = 2; -commit; -SELECT * from t1; -commit; -unlock tables; - -connection con1; -reap; -commit; -select * from t1; -drop table t1; - -# End of 4.1 tests === added file 'mysql-test/t/innodb-master.opt' --- a/mysql-test/t/innodb-master.opt 1970-01-01 00:00:00 +0000 +++ b/mysql-test/t/innodb-master.opt 2009-06-09 13:19:13 +0000 @@ -0,0 +1 @@ +--binlog_cache_size=32768 --innodb_lock_wait_timeout=1 === removed file 'mysql-test/t/innodb-master.opt' --- a/mysql-test/t/innodb-master.opt 2006-04-23 08:48:31 +0000 +++ b/mysql-test/t/innodb-master.opt 1970-01-01 00:00:00 +0000 @@ -1 +0,0 @@ ---binlog_cache_size=32768 --innodb_lock_wait_timeout=1 === added file 'mysql-test/t/innodb-replace.test' --- a/mysql-test/t/innodb-replace.test 1970-01-01 00:00:00 +0000 +++ b/mysql-test/t/innodb-replace.test 2009-06-09 13:19:13 +0000 @@ -0,0 +1,22 @@ +-- source include/have_innodb.inc +# embedded server ignores 'delayed', so skip this +-- source include/not_embedded.inc + +--disable_warnings +drop table if exists t1; +--enable_warnings + +# +# Bug #1078 +# +create table t1 (c1 char(5) unique not null, c2 int, stamp timestamp) engine=innodb; +select * from t1; +--error ER_DELAYED_NOT_SUPPORTED +replace delayed into t1 (c1, c2) values ( "text1","11"); +select * from t1; +--error ER_DELAYED_NOT_SUPPORTED +replace delayed into t1 (c1, c2) values ( "text1","12"); +select * from t1; +drop table t1; + +# End of 4.1 tests === removed file 'mysql-test/t/innodb-replace.test' --- a/mysql-test/t/innodb-replace.test 2008-06-03 11:25:41 +0000 +++ b/mysql-test/t/innodb-replace.test 1970-01-01 00:00:00 +0000 @@ -1,22 +0,0 @@ --- source include/have_innodb.inc -# embedded server ignores 'delayed', so skip this --- source include/not_embedded.inc - ---disable_warnings -drop table if exists t1; ---enable_warnings - -# -# Bug #1078 -# -create table t1 (c1 char(5) unique not null, c2 int, stamp timestamp) engine=innodb; -select * from t1; ---error ER_DELAYED_NOT_SUPPORTED -replace delayed into t1 (c1, c2) values ( "text1","11"); -select * from t1; ---error ER_DELAYED_NOT_SUPPORTED -replace delayed into t1 (c1, c2) values ( "text1","12"); -select * from t1; -drop table t1; - -# End of 4.1 tests === added file 'mysql-test/t/innodb-semi-consistent-master.opt' --- a/mysql-test/t/innodb-semi-consistent-master.opt 1970-01-01 00:00:00 +0000 +++ b/mysql-test/t/innodb-semi-consistent-master.opt 2009-06-09 13:19:13 +0000 @@ -0,0 +1 @@ +--innodb_lock_wait_timeout=2 === removed file 'mysql-test/t/innodb-semi-consistent-master.opt' --- a/mysql-test/t/innodb-semi-consistent-master.opt 2009-01-13 14:14:11 +0000 +++ b/mysql-test/t/innodb-semi-consistent-master.opt 1970-01-01 00:00:00 +0000 @@ -1 +0,0 @@ ---innodb_lock_wait_timeout=2 === added file 'mysql-test/t/innodb-semi-consistent.test' --- a/mysql-test/t/innodb-semi-consistent.test 1970-01-01 00:00:00 +0000 +++ b/mysql-test/t/innodb-semi-consistent.test 2009-06-09 13:19:13 +0000 @@ -0,0 +1,55 @@ +-- source include/not_embedded.inc +-- source include/have_innodb.inc + +--disable_warnings +drop table if exists t1; +--enable_warnings + +# basic tests of semi-consistent reads + +connect (a,localhost,root,,); +connect (b,localhost,root,,); +connection a; +set binlog_format=mixed; +set session transaction isolation level repeatable read; +create table t1(a int not null) engine=innodb DEFAULT CHARSET=latin1; +insert into t1 values (1),(2),(3),(4),(5),(6),(7); +set autocommit=0; +# this should lock the entire table +select * from t1 where a=3 lock in share mode; +connection b; +set binlog_format=mixed; +set session transaction isolation level repeatable read; +set autocommit=0; +-- error ER_LOCK_WAIT_TIMEOUT +update t1 set a=10 where a=5; +connection a; +commit; +connection b; +# perform a semi-consisent read (and unlock non-matching rows) +set session transaction isolation level read committed; +update t1 set a=10 where a=5; +connection a; +-- error ER_LOCK_WAIT_TIMEOUT +select * from t1 where a=2 for update; +# this should lock the records (1),(2) +select * from t1 where a=2 limit 1 for update; +connection b; +# semi-consistent read will skip non-matching locked rows a=1, a=2 +update t1 set a=11 where a=6; +-- error ER_LOCK_WAIT_TIMEOUT +update t1 set a=12 where a=2; +-- error ER_LOCK_WAIT_TIMEOUT +update t1 set a=13 where a=1; +connection a; +commit; +connection b; +update t1 set a=14 where a=1; +commit; +connection a; +select * from t1; +drop table t1; + +connection default; +disconnect a; +disconnect b; === removed file 'mysql-test/t/innodb-semi-consistent.test' --- a/mysql-test/t/innodb-semi-consistent.test 2009-01-13 14:14:11 +0000 +++ b/mysql-test/t/innodb-semi-consistent.test 1970-01-01 00:00:00 +0000 @@ -1,55 +0,0 @@ --- source include/not_embedded.inc --- source include/have_innodb.inc - ---disable_warnings -drop table if exists t1; ---enable_warnings - -# basic tests of semi-consistent reads - -connect (a,localhost,root,,); -connect (b,localhost,root,,); -connection a; -set binlog_format=mixed; -set session transaction isolation level repeatable read; -create table t1(a int not null) engine=innodb DEFAULT CHARSET=latin1; -insert into t1 values (1),(2),(3),(4),(5),(6),(7); -set autocommit=0; -# this should lock the entire table -select * from t1 where a=3 lock in share mode; -connection b; -set binlog_format=mixed; -set session transaction isolation level repeatable read; -set autocommit=0; --- error ER_LOCK_WAIT_TIMEOUT -update t1 set a=10 where a=5; -connection a; -commit; -connection b; -# perform a semi-consisent read (and unlock non-matching rows) -set session transaction isolation level read committed; -update t1 set a=10 where a=5; -connection a; --- error ER_LOCK_WAIT_TIMEOUT -select * from t1 where a=2 for update; -# this should lock the records (1),(2) -select * from t1 where a=2 limit 1 for update; -connection b; -# semi-consistent read will skip non-matching locked rows a=1, a=2 -update t1 set a=11 where a=6; --- error ER_LOCK_WAIT_TIMEOUT -update t1 set a=12 where a=2; --- error ER_LOCK_WAIT_TIMEOUT -update t1 set a=13 where a=1; -connection a; -commit; -connection b; -update t1 set a=14 where a=1; -commit; -connection a; -select * from t1; -drop table t1; - -connection default; -disconnect a; -disconnect b; === added file 'mysql-test/t/innodb-timeout.test' --- a/mysql-test/t/innodb-timeout.test 1970-01-01 00:00:00 +0000 +++ b/mysql-test/t/innodb-timeout.test 2009-06-09 13:19:13 +0000 @@ -0,0 +1,64 @@ +-- source include/have_innodb.inc + +let $timeout=`select @@innodb_lock_wait_timeout`; +set global innodb_lock_wait_timeout=42; + +connect (a,localhost,root,,); +connect (b,localhost,root,,); + +connection a; +select @@innodb_lock_wait_timeout; +set innodb_lock_wait_timeout=1; +select @@innodb_lock_wait_timeout; + +connection b; +select @@innodb_lock_wait_timeout; +set global innodb_lock_wait_timeout=347; +select @@innodb_lock_wait_timeout; +set innodb_lock_wait_timeout=1; +select @@innodb_lock_wait_timeout; + +connect (c,localhost,root,,); +connection c; +select @@innodb_lock_wait_timeout; +connection default; +disconnect c; + +connection a; +create table t1(a int primary key)engine=innodb; +begin; +insert into t1 values(1),(2),(3); + +connection b; +--send +select * from t1 for update; + +connection a; +commit; + +connection b; +reap; + +connection a; +begin; +insert into t1 values(4); + +connection b; +--send +select * from t1 for update; + +connection a; +sleep 2; +commit; + +connection b; +--error ER_LOCK_WAIT_TIMEOUT +reap; +drop table t1; + +connection default; + +disconnect a; +disconnect b; + +eval set global innodb_lock_wait_timeout=$timeout; === added file 'mysql-test/t/innodb-use-sys-malloc-master.opt' --- a/mysql-test/t/innodb-use-sys-malloc-master.opt 1970-01-01 00:00:00 +0000 +++ b/mysql-test/t/innodb-use-sys-malloc-master.opt 2009-06-09 13:19:13 +0000 @@ -0,0 +1,2 @@ +--innodb-use-sys-malloc=true +--innodb-use-sys-malloc=true === added file 'mysql-test/t/innodb-use-sys-malloc.test' --- a/mysql-test/t/innodb-use-sys-malloc.test 1970-01-01 00:00:00 +0000 +++ b/mysql-test/t/innodb-use-sys-malloc.test 2009-06-09 13:19:13 +0000 @@ -0,0 +1,48 @@ +--source include/have_innodb.inc + +#display current value of innodb_use_sys_malloc +SELECT @@GLOBAL.innodb_use_sys_malloc; +--echo 1 Expected + +#try changing it. Should fail. +--error ER_INCORRECT_GLOBAL_LOCAL_VAR +SET @@GLOBAL.innodb_use_sys_malloc=0; +--echo Expected error 'Read only variable' + +SELECT @@GLOBAL.innodb_use_sys_malloc; +--echo 1 Expected + + +#do some stuff to see if it works. +--disable_warnings +drop table if exists t1; +--enable_warnings + +create table t1(a int not null) engine=innodb DEFAULT CHARSET=latin1; +insert into t1 values (1),(2),(3),(4),(5),(6),(7); +select * from t1; +drop table t1; +--source include/have_innodb.inc + +#display current value of innodb_use_sys_malloc +SELECT @@GLOBAL.innodb_use_sys_malloc; +--echo 1 Expected + +#try changing it. Should fail. +--error ER_INCORRECT_GLOBAL_LOCAL_VAR +SET @@GLOBAL.innodb_use_sys_malloc=0; +--echo Expected error 'Read only variable' + +SELECT @@GLOBAL.innodb_use_sys_malloc; +--echo 1 Expected + + +#do some stuff to see if it works. +--disable_warnings +drop table if exists t1; +--enable_warnings + +create table t1(a int not null) engine=innodb DEFAULT CHARSET=latin1; +insert into t1 values (1),(2),(3),(4),(5),(6),(7); +select * from t1; +drop table t1; === added file 'mysql-test/t/innodb-zip.test' --- a/mysql-test/t/innodb-zip.test 1970-01-01 00:00:00 +0000 +++ b/mysql-test/t/innodb-zip.test 2009-06-09 15:08:46 +0000 @@ -0,0 +1,347 @@ +-- source include/have_innodb.inc + +let $per_table=`select @@innodb_file_per_table`; +let $format=`select @@innodb_file_format`; +let $innodb_file_format_check_orig=`select @@innodb_file_format_check`; +set global innodb_file_per_table=off; +set global innodb_file_format=`0`; + +create table t0(a int primary key) engine=innodb row_format=compressed; +create table t00(a int primary key) engine=innodb +key_block_size=4 row_format=compressed; +create table t1(a int primary key) engine=innodb row_format=dynamic; +create table t2(a int primary key) engine=innodb row_format=redundant; +create table t3(a int primary key) engine=innodb row_format=compact; +create table t4(a int primary key) engine=innodb key_block_size=9; +create table t5(a int primary key) engine=innodb +key_block_size=1 row_format=redundant; + +set global innodb_file_per_table=on; +create table t6(a int primary key) engine=innodb +key_block_size=1 row_format=redundant; +set global innodb_file_format=`1`; +create table t7(a int primary key) engine=innodb +key_block_size=1 row_format=redundant; +create table t8(a int primary key) engine=innodb +key_block_size=1 row_format=fixed; +create table t9(a int primary key) engine=innodb +key_block_size=1 row_format=compact; +create table t10(a int primary key) engine=innodb +key_block_size=1 row_format=dynamic; +create table t11(a int primary key) engine=innodb +key_block_size=1 row_format=compressed; +create table t12(a int primary key) engine=innodb +key_block_size=1; +create table t13(a int primary key) engine=innodb +row_format=compressed; +create table t14(a int primary key) engine=innodb key_block_size=9; + +SELECT table_schema, table_name, row_format +FROM information_schema.tables WHERE engine='innodb'; + +drop table t0,t00,t2,t3,t4,t5,t6,t7,t8,t9,t10,t11,t12,t13,t14; +alter table t1 key_block_size=0; +alter table t1 row_format=dynamic; +SELECT table_schema, table_name, row_format +FROM information_schema.tables WHERE engine='innodb'; +alter table t1 row_format=compact; +SELECT table_schema, table_name, row_format +FROM information_schema.tables WHERE engine='innodb'; +alter table t1 row_format=redundant; +SELECT table_schema, table_name, row_format +FROM information_schema.tables WHERE engine='innodb'; +drop table t1; + +create table t1(a int not null, b text, index(b(10))) engine=innodb +key_block_size=1; + +create table t2(b text)engine=innodb; +insert into t2 values(concat('1abcdefghijklmnopqrstuvwxyz', repeat('A',5000))); + +insert into t1 select 1, b from t2; +commit; + +connect (a,localhost,root,,); +connect (b,localhost,root,,); + +connection a; +begin; +update t1 set b=repeat('B',100); + +connection b; +select a,left(b,40) from t1 natural join t2; + +connection a; +rollback; + +connection b; +select a,left(b,40) from t1 natural join t2; + +connection default; +disconnect a; +disconnect b; + +SELECT table_schema, table_name, row_format +FROM information_schema.tables WHERE engine='innodb'; +drop table t1,t2; + +# The following should fail even in non-strict mode. +SET SESSION innodb_strict_mode = off; +--error ER_TOO_BIG_ROWSIZE +CREATE TABLE t1( + c TEXT NOT NULL, d TEXT NOT NULL, + PRIMARY KEY (c(767),d(767))) +ENGINE=InnoDB ROW_FORMAT=COMPRESSED KEY_BLOCK_SIZE=1 CHARSET=ASCII; +--error ER_TOO_BIG_ROWSIZE +CREATE TABLE t1( + c TEXT NOT NULL, d TEXT NOT NULL, + PRIMARY KEY (c(767),d(767))) +ENGINE=InnoDB ROW_FORMAT=COMPRESSED KEY_BLOCK_SIZE=2 CHARSET=ASCII; +CREATE TABLE t1( + c TEXT NOT NULL, d TEXT NOT NULL, + PRIMARY KEY (c(767),d(767))) +ENGINE=InnoDB ROW_FORMAT=COMPRESSED KEY_BLOCK_SIZE=4 CHARSET=ASCII; +drop table t1; +--error ER_TOO_BIG_ROWSIZE +CREATE TABLE t1(c TEXT, PRIMARY KEY (c(440))) +ENGINE=InnoDB ROW_FORMAT=COMPRESSED KEY_BLOCK_SIZE=1 CHARSET=ASCII; +# The maximum key size for a compressed row actually depends on the +# version of libz used, as account must be taken for the maximum +# compressed size of a key, and this differs between libz +# versions. Some libz versions allow a size of 439, some only 438. +CREATE TABLE t1(c TEXT, PRIMARY KEY (c(438))) +ENGINE=InnoDB ROW_FORMAT=COMPRESSED KEY_BLOCK_SIZE=1 CHARSET=ASCII; +INSERT INTO t1 VALUES(REPEAT('A',512)),(REPEAT('B',512)); +DROP TABLE t1; + +# +# Test blob column inheritance (mantis issue#36) +# + +create table t1( c1 int not null, c2 blob, c3 blob, c4 blob, + primary key(c1, c2(22), c3(22))) + engine = innodb row_format = dynamic; +begin; +insert into t1 values(1, repeat('A', 20000), repeat('B', 20000), + repeat('C', 20000)); + +update t1 set c3 = repeat('D', 20000) where c1 = 1; +commit; + +# one blob column which is unchanged in update and part of PK +# one blob column which is changed and part of of PK +# one blob column which is not part of PK and is unchanged +select count(*) from t1 where c2 = repeat('A', 20000); +select count(*) from t1 where c3 = repeat('D', 20000); +select count(*) from t1 where c4 = repeat('C', 20000); + +update t1 set c3 = repeat('E', 20000) where c1 = 1; +drop table t1; + +# +# +# Test innodb_file_format +# +set global innodb_file_format=`0`; +select @@innodb_file_format; +set global innodb_file_format=`1`; +select @@innodb_file_format; +-- error ER_WRONG_ARGUMENTS +set global innodb_file_format=`2`; +-- error ER_WRONG_ARGUMENTS +set global innodb_file_format=`-1`; +set global innodb_file_format=`Antelope`; +set global innodb_file_format=`Barracuda`; +-- error ER_WRONG_ARGUMENTS +set global innodb_file_format=`Cheetah`; +-- error ER_WRONG_ARGUMENTS +set global innodb_file_format=`abc`; +-- error ER_WRONG_ARGUMENTS +set global innodb_file_format=`1a`; +-- error ER_WRONG_ARGUMENTS +set global innodb_file_format=``; + +#test strict mode. +# this does not work anymore, has been removed from mysqltest +# -- enable_errors +set global innodb_file_per_table = on; +set global innodb_file_format = `1`; + +set innodb_strict_mode = off; +create table t1 (id int primary key) engine = innodb key_block_size = 0; +drop table t1; + +#set strict_mode +set innodb_strict_mode = on; + +#Test different values of KEY_BLOCK_SIZE + +--error ER_CANT_CREATE_TABLE +create table t1 (id int primary key) engine = innodb key_block_size = 0; +show errors; + +--error ER_CANT_CREATE_TABLE +create table t2 (id int primary key) engine = innodb key_block_size = 9; +show errors; + + +create table t3 (id int primary key) engine = innodb key_block_size = 1; +create table t4 (id int primary key) engine = innodb key_block_size = 2; +create table t5 (id int primary key) engine = innodb key_block_size = 4; +create table t6 (id int primary key) engine = innodb key_block_size = 8; +create table t7 (id int primary key) engine = innodb key_block_size = 16; + +#check various ROW_FORMAT values. +create table t8 (id int primary key) engine = innodb row_format = compressed; +create table t9 (id int primary key) engine = innodb row_format = dynamic; +create table t10(id int primary key) engine = innodb row_format = compact; +create table t11(id int primary key) engine = innodb row_format = redundant; + +SELECT table_schema, table_name, row_format +FROM information_schema.tables WHERE engine='innodb'; +drop table t3, t4, t5, t6, t7, t8, t9, t10, t11; + +#test different values of ROW_FORMAT with KEY_BLOCK_SIZE +create table t1 (id int primary key) engine = innodb +key_block_size = 8 row_format = compressed; + +--error ER_CANT_CREATE_TABLE +create table t2 (id int primary key) engine = innodb +key_block_size = 8 row_format = redundant; +show errors; + +--error ER_CANT_CREATE_TABLE +create table t3 (id int primary key) engine = innodb +key_block_size = 8 row_format = compact; +show errors; + +--error ER_CANT_CREATE_TABLE +create table t4 (id int primary key) engine = innodb +key_block_size = 8 row_format = dynamic; +show errors; + +--error ER_CANT_CREATE_TABLE +create table t5 (id int primary key) engine = innodb +key_block_size = 8 row_format = default; +show errors; + +SELECT table_schema, table_name, row_format +FROM information_schema.tables WHERE engine='innodb'; +drop table t1; + +#test multiple errors +--error ER_CANT_CREATE_TABLE +create table t1 (id int primary key) engine = innodb +key_block_size = 9 row_format = redundant; +show errors; + +--error ER_CANT_CREATE_TABLE +create table t2 (id int primary key) engine = innodb +key_block_size = 9 row_format = compact; +show errors; + +--error ER_CANT_CREATE_TABLE +create table t2 (id int primary key) engine = innodb +key_block_size = 9 row_format = dynamic; +show errors; + +SELECT table_schema, table_name, row_format +FROM information_schema.tables WHERE engine='innodb'; + +#test valid values with innodb_file_per_table unset +set global innodb_file_per_table = off; + +--error ER_CANT_CREATE_TABLE +create table t1 (id int primary key) engine = innodb key_block_size = 1; +show errors; +--error ER_CANT_CREATE_TABLE +create table t2 (id int primary key) engine = innodb key_block_size = 2; +show errors; +--error ER_CANT_CREATE_TABLE +create table t3 (id int primary key) engine = innodb key_block_size = 4; +show errors; +--error ER_CANT_CREATE_TABLE +create table t4 (id int primary key) engine = innodb key_block_size = 8; +show errors; +--error ER_CANT_CREATE_TABLE +create table t5 (id int primary key) engine = innodb key_block_size = 16; +show errors; +--error ER_CANT_CREATE_TABLE +create table t6 (id int primary key) engine = innodb row_format = compressed; +show errors; +--error ER_CANT_CREATE_TABLE +create table t7 (id int primary key) engine = innodb row_format = dynamic; +show errors; +create table t8 (id int primary key) engine = innodb row_format = compact; +create table t9 (id int primary key) engine = innodb row_format = redundant; + +SELECT table_schema, table_name, row_format +FROM information_schema.tables WHERE engine='innodb'; +drop table t8, t9; + +#test valid values with innodb_file_format unset +set global innodb_file_per_table = on; +set global innodb_file_format = `0`; + +--error ER_CANT_CREATE_TABLE +create table t1 (id int primary key) engine = innodb key_block_size = 1; +show errors; +--error ER_CANT_CREATE_TABLE +create table t2 (id int primary key) engine = innodb key_block_size = 2; +show errors; +--error ER_CANT_CREATE_TABLE +create table t3 (id int primary key) engine = innodb key_block_size = 4; +show errors; +--error ER_CANT_CREATE_TABLE +create table t4 (id int primary key) engine = innodb key_block_size = 8; +show errors; +--error ER_CANT_CREATE_TABLE +create table t5 (id int primary key) engine = innodb key_block_size = 16; +show errors; +--error ER_CANT_CREATE_TABLE +create table t6 (id int primary key) engine = innodb row_format = compressed; +show errors; +--error ER_CANT_CREATE_TABLE +create table t7 (id int primary key) engine = innodb row_format = dynamic; +show errors; +create table t8 (id int primary key) engine = innodb row_format = compact; +create table t9 (id int primary key) engine = innodb row_format = redundant; + +SELECT table_schema, table_name, row_format +FROM information_schema.tables WHERE engine='innodb'; +drop table t8, t9; + +eval set global innodb_file_per_table=$per_table; +eval set global innodb_file_format=$format; +# +# Testing of tablespace tagging +# +-- disable_info +set global innodb_file_per_table=on; +set global innodb_file_format=`Barracuda`; +set global innodb_file_format_check=`Antelope`; +create table normal_table ( + c1 int +) engine = innodb; +select @@innodb_file_format_check; +create table zip_table ( + c1 int +) engine = innodb key_block_size = 8; +select @@innodb_file_format_check; +set global innodb_file_format_check=`Antelope`; +select @@innodb_file_format_check; +-- disable_result_log +show table status; +-- enable_result_log +select @@innodb_file_format_check; +drop table normal_table, zip_table; +-- disable_result_log + +# +# restore environment to the state it was before this test execution +# + +-- disable_query_log +eval set global innodb_file_format=$format; +eval set global innodb_file_per_table=$per_table; +eval set global innodb_file_format_check=$innodb_file_format_check_orig; === added file 'mysql-test/t/innodb.test' --- a/mysql-test/t/innodb.test 1970-01-01 00:00:00 +0000 +++ b/mysql-test/t/innodb.test 2009-06-09 15:08:46 +0000 @@ -0,0 +1,2540 @@ +####################################################################### +# # +# Please, DO NOT TOUCH this file as well as the innodb.result file. # +# These files are to be modified ONLY BY INNOBASE guys. # +# # +# Use innodb_mysql.[test|result] files instead. # +# # +# If nevertheless you need to make some changes here, please, forward # +# your commit message To: dev(a)innodb.com Cc: dev-innodb(a)mysql.com # +# (otherwise your changes may be erased). # +# # +####################################################################### + +-- source include/have_innodb.inc + +# +# Small basic test with ignore +# + +--disable_warnings +drop table if exists t1,t2,t3,t4; +drop database if exists mysqltest; +--enable_warnings + +create table t1 (id int unsigned not null auto_increment, code tinyint unsigned not null, name char(20) not null, primary key (id), key (code), unique (name)) engine=innodb; + +insert into t1 (code, name) values (1, 'Tim'), (1, 'Monty'), (2, 'David'), (2, 'Erik'), (3, 'Sasha'), (3, 'Jeremy'), (4, 'Matt'); +select id, code, name from t1 order by id; + +update ignore t1 set id = 8, name = 'Sinisa' where id < 3; +select id, code, name from t1 order by id; +update ignore t1 set id = id + 10, name = 'Ralph' where id < 4; +select id, code, name from t1 order by id; + +drop table t1; + +# +# A bit bigger test +# The 'replace_column' statements are needed because the cardinality calculated +# by innodb is not always the same between runs +# + +CREATE TABLE t1 ( + id int(11) NOT NULL auto_increment, + parent_id int(11) DEFAULT '0' NOT NULL, + level tinyint(4) DEFAULT '0' NOT NULL, + PRIMARY KEY (id), + KEY parent_id (parent_id), + KEY level (level) +) engine=innodb; +INSERT INTO t1 VALUES (1,0,0),(3,1,1),(4,1,1),(8,2,2),(9,2,2),(17,3,2),(22,4,2),(24,4,2),(28,5,2),(29,5,2),(30,5,2),(31,6,2),(32,6,2),(33,6,2),(203,7,2),(202,7,2),(20,3,2),(157,0,0),(193,5,2),(40,7,2),(2,1,1),(15,2,2),(6,1,1),(34,6,2),(35,6,2),(16,3,2),(7,1,1),(36,7,2),(18,3,2),(26,5,2),(27,5,2),(183,4,2),(38,7,2),(25,5,2),(37,7,2),(21,4,2),(19,3,2),(5,1,1),(179,5,2); +update t1 set parent_id=parent_id+100; +select * from t1 where parent_id=102; +update t1 set id=id+1000; +-- error ER_DUP_ENTRY,1022 +update t1 set id=1024 where id=1009; +select * from t1; +update ignore t1 set id=id+1; # This will change all rows +select * from t1; +update ignore t1 set id=1023 where id=1010; +select * from t1 where parent_id=102; +--replace_column 9 # +explain select level from t1 where level=1; +--replace_column 9 # +explain select level,id from t1 where level=1; +--replace_column 9 # +explain select level,id,parent_id from t1 where level=1; +select level,id from t1 where level=1; +select level,id,parent_id from t1 where level=1; +optimize table t1; +--replace_column 7 # +show keys from t1; +drop table t1; + +# +# Test replace +# + +CREATE TABLE t1 ( + gesuchnr int(11) DEFAULT '0' NOT NULL, + benutzer_id int(11) DEFAULT '0' NOT NULL, + PRIMARY KEY (gesuchnr,benutzer_id) +) engine=innodb; + +replace into t1 (gesuchnr,benutzer_id) values (2,1); +replace into t1 (gesuchnr,benutzer_id) values (1,1); +replace into t1 (gesuchnr,benutzer_id) values (1,1); +select * from t1; +drop table t1; + +# +# test delete using hidden_primary_key +# + +create table t1 (a int) engine=innodb; +insert into t1 values (1), (2); +optimize table t1; +delete from t1 where a = 1; +select * from t1; +check table t1; +drop table t1; + +create table t1 (a int,b varchar(20)) engine=innodb; +insert into t1 values (1,""), (2,"testing"); +delete from t1 where a = 1; +select * from t1; +create index skr on t1 (a); +insert into t1 values (3,""), (4,"testing"); +analyze table t1; +--replace_column 7 # +show keys from t1; +drop table t1; + + +# Test of reading on secondary key with may be null + +create table t1 (a int,b varchar(20),key(a)) engine=innodb; +insert into t1 values (1,""), (2,"testing"); +select * from t1 where a = 1; +drop table t1; + +# +# Test rollback +# + +create table t1 (n int not null primary key) engine=innodb; +set autocommit=0; +insert into t1 values (4); +rollback; +select n, "after rollback" from t1; +insert into t1 values (4); +commit; +select n, "after commit" from t1; +commit; +insert into t1 values (5); +-- error ER_DUP_ENTRY +insert into t1 values (4); +commit; +select n, "after commit" from t1; +set autocommit=1; +insert into t1 values (6); +-- error ER_DUP_ENTRY +insert into t1 values (4); +select n from t1; +set autocommit=0; +# +# savepoints +# +begin; +savepoint `my_savepoint`; +insert into t1 values (7); +savepoint `savept2`; +insert into t1 values (3); +select n from t1; +savepoint savept3; +rollback to savepoint savept2; +--error 1305 +rollback to savepoint savept3; +rollback to savepoint savept2; +release savepoint `my_savepoint`; +select n from t1; +-- error 1305 +rollback to savepoint `my_savepoint`; +--error 1305 +rollback to savepoint savept2; +insert into t1 values (8); +savepoint sv; +commit; +savepoint sv; +set autocommit=1; +# nop +rollback; +drop table t1; + +# +# Test for commit and FLUSH TABLES WITH READ LOCK +# + +create table t1 (n int not null primary key) engine=innodb; +start transaction; +insert into t1 values (4); +flush tables with read lock; +# +# Current code can't handle a read lock in middle of transaction +#--error 1223; +commit; +unlock tables; +commit; +select * from t1; +drop table t1; + +# +# Testing transactions +# + +create table t1 ( id int NOT NULL PRIMARY KEY, nom varchar(64)) engine=innodb; +begin; +insert into t1 values(1,'hamdouni'); +select id as afterbegin_id,nom as afterbegin_nom from t1; +rollback; +select id as afterrollback_id,nom as afterrollback_nom from t1; +set autocommit=0; +insert into t1 values(2,'mysql'); +select id as afterautocommit0_id,nom as afterautocommit0_nom from t1; +rollback; +select id as afterrollback_id,nom as afterrollback_nom from t1; +set autocommit=1; +drop table t1; + +# +# Simple not autocommit test +# + +CREATE TABLE t1 (id char(8) not null primary key, val int not null) engine=innodb; +insert into t1 values ('pippo', 12); +-- error ER_DUP_ENTRY +insert into t1 values ('pippo', 12); # Gives error +delete from t1; +delete from t1 where id = 'pippo'; +select * from t1; + +insert into t1 values ('pippo', 12); +set autocommit=0; +delete from t1; +rollback; +select * from t1; +delete from t1; +commit; +select * from t1; +drop table t1; + +# +# Test of active transactions +# + +create table t1 (a integer) engine=innodb; +start transaction; +rename table t1 to t2; +create table t1 (b integer) engine=innodb; +insert into t1 values (1); +rollback; +drop table t1; +rename table t2 to t1; +drop table t1; +set autocommit=1; + +# +# The following simple tests failed at some point +# + +CREATE TABLE t1 (ID INTEGER NOT NULL PRIMARY KEY, NAME VARCHAR(64)) ENGINE=innodb; +INSERT INTO t1 VALUES (1, 'Jochen'); +select * from t1; +drop table t1; + +CREATE TABLE t1 ( _userid VARCHAR(60) NOT NULL PRIMARY KEY) ENGINE=innodb; +set autocommit=0; +INSERT INTO t1 SET _userid='marc(a)anyware.co.uk'; +COMMIT; +SELECT * FROM t1; +SELECT _userid FROM t1 WHERE _userid='marc(a)anyware.co.uk'; +drop table t1; +set autocommit=1; + +# +# Test when reading on part of unique key +# +CREATE TABLE t1 ( + user_id int(10) DEFAULT '0' NOT NULL, + name varchar(100), + phone varchar(100), + ref_email varchar(100) DEFAULT '' NOT NULL, + detail varchar(200), + PRIMARY KEY (user_id,ref_email) +)engine=innodb; + +INSERT INTO t1 VALUES (10292,'sanjeev','29153373','sansh777(a)hotmail.com','xxx'),(10292,'shirish','2333604','shirish(a)yahoo.com','ddsds'),(10292,'sonali','323232','sonali(a)bolly.com','filmstar'); +select * from t1 where user_id=10292; +INSERT INTO t1 VALUES (10291,'sanjeev','29153373','sansh777(a)hotmail.com','xxx'),(10293,'shirish','2333604','shirish(a)yahoo.com','ddsds'); +select * from t1 where user_id=10292; +select * from t1 where user_id>=10292; +select * from t1 where user_id>10292; +select * from t1 where user_id<10292; +drop table t1; + +# +# Test that keys are created in right order +# + +CREATE TABLE t1 (a int not null, b int not null,c int not null, +key(a),primary key(a,b), unique(c),key(a),unique(b)); +--replace_column 7 # +show index from t1; +drop table t1; + +# +# Test of ALTER TABLE and innodb tables +# + +create table t1 (col1 int not null, col2 char(4) not null, primary key(col1)); +alter table t1 engine=innodb; +insert into t1 values ('1','1'),('5','2'),('2','3'),('3','4'),('4','4'); +select * from t1; +update t1 set col2='7' where col1='4'; +select * from t1; +alter table t1 add co3 int not null; +select * from t1; +update t1 set col2='9' where col1='2'; +select * from t1; +drop table t1; + +# +# INSERT INTO innodb tables +# + +create table t1 (a int not null , b int, primary key (a)) engine = innodb; +create table t2 (a int not null , b int, primary key (a)) engine = myisam; +insert into t1 VALUES (1,3) , (2,3), (3,3); +select * from t1; +insert into t2 select * from t1; +select * from t2; +delete from t1 where b = 3; +select * from t1; +insert into t1 select * from t2; +select * from t1; +select * from t2; +drop table t1,t2; + +# +# ORDER BY on not primary key +# + +CREATE TABLE t1 ( + user_name varchar(12), + password text, + subscribed char(1), + user_id int(11) DEFAULT '0' NOT NULL, + quota bigint(20), + weight double, + access_date date, + access_time time, + approved datetime, + dummy_primary_key int(11) NOT NULL auto_increment, + PRIMARY KEY (dummy_primary_key) +) ENGINE=innodb; +INSERT INTO t1 VALUES ('user_0','somepassword','N',0,0,0,'2000-09-07','23:06:59','2000-09-07 23:06:59',1); +INSERT INTO t1 VALUES ('user_1','somepassword','Y',1,1,1,'2000-09-07','23:06:59','2000-09-07 23:06:59',2); +INSERT INTO t1 VALUES ('user_2','somepassword','N',2,2,1.4142135623731,'2000-09-07','23:06:59','2000-09-07 23:06:59',3); +INSERT INTO t1 VALUES ('user_3','somepassword','Y',3,3,1.7320508075689,'2000-09-07','23:06:59','2000-09-07 23:06:59',4); +INSERT INTO t1 VALUES ('user_4','somepassword','N',4,4,2,'2000-09-07','23:06:59','2000-09-07 23:06:59',5); +select user_name, password , subscribed, user_id, quota, weight, access_date, access_time, approved, dummy_primary_key from t1 order by user_name; +drop table t1; + +# +# Testing of tables without primary keys +# + +CREATE TABLE t1 ( + id int(11) NOT NULL auto_increment, + parent_id int(11) DEFAULT '0' NOT NULL, + level tinyint(4) DEFAULT '0' NOT NULL, + KEY (id), + KEY parent_id (parent_id), + KEY level (level) +) engine=innodb; +INSERT INTO t1 VALUES (1,0,0),(3,1,1),(4,1,1),(8,2,2),(9,2,2),(17,3,2),(22,4,2),(24,4,2),(28,5,2),(29,5,2),(30,5,2),(31,6,2),(32,6,2),(33,6,2),(203,7,2),(202,7,2),(20,3,2),(157,0,0),(193,5,2),(40,7,2),(2,1,1),(15,2,2),(6,1,1),(34,6,2),(35,6,2),(16,3,2),(7,1,1),(36,7,2),(18,3,2),(26,5,2),(27,5,2),(183,4,2),(38,7,2),(25,5,2),(37,7,2),(21,4,2),(19,3,2),(5,1,1); +INSERT INTO t1 values (179,5,2); +update t1 set parent_id=parent_id+100; +select * from t1 where parent_id=102; +update t1 set id=id+1000; +update t1 set id=1024 where id=1009; +select * from t1; +update ignore t1 set id=id+1; # This will change all rows +select * from t1; +update ignore t1 set id=1023 where id=1010; +select * from t1 where parent_id=102; +--replace_column 9 # +explain select level from t1 where level=1; +select level,id from t1 where level=1; +select level,id,parent_id from t1 where level=1; +select level,id from t1 where level=1 order by id; +delete from t1 where level=1; +select * from t1; +drop table t1; + +# +# Test of index only reads +# +CREATE TABLE t1 ( + sca_code char(6) NOT NULL, + cat_code char(6) NOT NULL, + sca_desc varchar(50), + lan_code char(2) NOT NULL, + sca_pic varchar(100), + sca_sdesc varchar(50), + sca_sch_desc varchar(16), + PRIMARY KEY (sca_code, cat_code, lan_code), + INDEX sca_pic (sca_pic) +) engine = innodb ; + +INSERT INTO t1 ( sca_code, cat_code, sca_desc, lan_code, sca_pic, sca_sdesc, sca_sch_desc) VALUES ( 'PD', 'J', 'PENDANT', 'EN', NULL, NULL, 'PENDANT'),( 'RI', 'J', 'RING', 'EN', NULL, NULL, 'RING'),( 'QQ', 'N', 'RING', 'EN', 'not null', NULL, 'RING'); +select count(*) from t1 where sca_code = 'PD'; +select count(*) from t1 where sca_code <= 'PD'; +select count(*) from t1 where sca_pic is null; +alter table t1 drop index sca_pic, add index sca_pic (cat_code, sca_pic); +select count(*) from t1 where sca_code='PD' and sca_pic is null; +select count(*) from t1 where cat_code='E'; + +alter table t1 drop index sca_pic, add index (sca_pic, cat_code); +select count(*) from t1 where sca_code='PD' and sca_pic is null; +select count(*) from t1 where sca_pic >= 'n'; +select sca_pic from t1 where sca_pic is null; +update t1 set sca_pic="test" where sca_pic is null; +delete from t1 where sca_code='pd'; +drop table t1; + +# +# Test of opening table twice and timestamps +# +set @a:=now(); +CREATE TABLE t1 (a int not null, b timestamp not null, primary key (a)) engine=innodb; +insert into t1 (a) values(1),(2),(3); +select t1.a from t1 natural join t1 as t2 where t1.b >= @a order by t1.a; +select a from t1 natural join t1 as t2 where b >= @a order by a; +update t1 set a=5 where a=1; +select a from t1; +drop table t1; + +# +# Test with variable length primary key +# +create table t1 (a varchar(100) not null, primary key(a), b int not null) engine=innodb; +insert into t1 values("hello",1),("world",2); +select * from t1 order by b desc; +optimize table t1; +--replace_column 7 # +show keys from t1; +drop table t1; + +# +# Test of create index with NULL columns +# +create table t1 (i int, j int ) ENGINE=innodb; +insert into t1 values (1,2); +select * from t1 where i=1 and j=2; +create index ax1 on t1 (i,j); +select * from t1 where i=1 and j=2; +drop table t1; + +# +# Test min-max optimization +# + +CREATE TABLE t1 ( + a int3 unsigned NOT NULL, + b int1 unsigned NOT NULL, + UNIQUE (a, b) +) ENGINE = innodb; + +INSERT INTO t1 VALUES (1, 1); +SELECT MIN(B),MAX(b) FROM t1 WHERE t1.a = 1; +drop table t1; + +# +# Test INSERT DELAYED +# + +CREATE TABLE t1 (a int unsigned NOT NULL) engine=innodb; +# Can't test this in 3.23 +# INSERT DELAYED INTO t1 VALUES (1); +INSERT INTO t1 VALUES (1); +SELECT * FROM t1; +DROP TABLE t1; + + +# +# Crash when using many tables (Test case by Jeremy D Zawodny) +# + +create table t1 (a int primary key,b int, c int, d int, e int, f int, g int, h int, i int, j int, k int, l int, m int, n int, o int, p int, q int, r int, s int, t int, u int, v int, w int, x int, y int, z int, a1 int, a2 int, a3 int, a4 int, a5 int, a6 int, a7 int, a8 int, a9 int, b1 int, b2 int, b3 int, b4 int, b5 int, b6 int) engine = innodb; +insert into t1 values (1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1); +--replace_column 9 # +explain select * from t1 where a > 0 and a < 50; +drop table t1; + +# +# Test lock tables +# + +create table t1 (id int NOT NULL,id2 int NOT NULL,id3 int NOT NULL,dummy1 char(30),primary key (id,id2),index index_id3 (id3)) engine=innodb; +insert into t1 values (0,0,0,'ABCDEFGHIJ'),(2,2,2,'BCDEFGHIJK'),(1,1,1,'CDEFGHIJKL'); +LOCK TABLES t1 WRITE; +--error ER_DUP_ENTRY +insert into t1 values (99,1,2,'D'),(1,1,2,'D'); +select id from t1; +select id from t1; +UNLOCK TABLES; +DROP TABLE t1; + +create table t1 (id int NOT NULL,id2 int NOT NULL,id3 int NOT NULL,dummy1 char(30),primary key (id,id2),index index_id3 (id3)) engine=innodb; +insert into t1 values (0,0,0,'ABCDEFGHIJ'),(2,2,2,'BCDEFGHIJK'),(1,1,1,'CDEFGHIJKL'); +LOCK TABLES t1 WRITE; +begin; +--error ER_DUP_ENTRY +insert into t1 values (99,1,2,'D'),(1,1,2,'D'); +select id from t1; +insert ignore into t1 values (100,1,2,'D'),(1,1,99,'D'); +commit; +select id,id3 from t1; +UNLOCK TABLES; +DROP TABLE t1; + +# +# Test prefix key +# +create table t1 (a char(20), unique (a(5))) engine=innodb; +drop table t1; +create table t1 (a char(20), index (a(5))) engine=innodb; +show create table t1; +drop table t1; + +# +# Test using temporary table and auto_increment +# + +create temporary table t1 (a int not null auto_increment, primary key(a)) engine=innodb; +insert into t1 values (NULL),(NULL),(NULL); +delete from t1 where a=3; +insert into t1 values (NULL); +select * from t1; +alter table t1 add b int; +select * from t1; +drop table t1; + +#Slashdot bug +create table t1 + ( + id int auto_increment primary key, + name varchar(32) not null, + value text not null, + uid int not null, + unique key(name,uid) + ) engine=innodb; +insert into t1 values (1,'one','one value',101), + (2,'two','two value',102),(3,'three','three value',103); +set insert_id=5; +replace into t1 (value,name,uid) values ('other value','two',102); +delete from t1 where uid=102; +set insert_id=5; +replace into t1 (value,name,uid) values ('other value','two',102); +set insert_id=6; +replace into t1 (value,name,uid) values ('other value','two',102); +select * from t1; +drop table t1; + +# +# Test DROP DATABASE +# + +create database mysqltest; +create table mysqltest.t1 (a int not null) engine= innodb; +insert into mysqltest.t1 values(1); +create table mysqltest.t2 (a int not null) engine= myisam; +insert into mysqltest.t2 values(1); +create table mysqltest.t3 (a int not null) engine= heap; +insert into mysqltest.t3 values(1); +commit; +drop database mysqltest; +# Don't check error message +--error 1049 +show tables from mysqltest; + +# +# Test truncate table with and without auto_commit +# + +set autocommit=0; +create table t1 (a int not null) engine= innodb; +insert into t1 values(1),(2); +truncate table t1; +commit; +truncate table t1; +truncate table t1; +select * from t1; +insert into t1 values(1),(2); +delete from t1; +select * from t1; +commit; +drop table t1; +set autocommit=1; + +create table t1 (a int not null) engine= innodb; +insert into t1 values(1),(2); +truncate table t1; +insert into t1 values(1),(2); +select * from t1; +truncate table t1; +insert into t1 values(1),(2); +delete from t1; +select * from t1; +drop table t1; + +# +# Test of how ORDER BY works when doing it on the whole table +# + +create table t1 (a int not null, b int not null, c int not null, primary key (a),key(b)) engine=innodb; +insert into t1 values (3,3,3),(1,1,1),(2,2,2),(4,4,4); +--replace_column 9 # +explain select * from t1 order by a; +--replace_column 9 # +explain select * from t1 order by b; +--replace_column 9 # +explain select * from t1 order by c; +--replace_column 9 # +explain select a from t1 order by a; +--replace_column 9 # +explain select b from t1 order by b; +--replace_column 9 # +explain select a,b from t1 order by b; +--replace_column 9 # +explain select a,b from t1; +--replace_column 9 # +explain select a,b,c from t1; +drop table t1; + +# +# Check describe +# + +create table t1 (t int not null default 1, key (t)) engine=innodb; +desc t1; +drop table t1; + +# +# Test of multi-table-delete +# + +CREATE TABLE t1 ( + number bigint(20) NOT NULL default '0', + cname char(15) NOT NULL default '', + carrier_id smallint(6) NOT NULL default '0', + privacy tinyint(4) NOT NULL default '0', + last_mod_date timestamp NOT NULL, + last_mod_id smallint(6) NOT NULL default '0', + last_app_date timestamp NOT NULL, + last_app_id smallint(6) default '-1', + version smallint(6) NOT NULL default '0', + assigned_scps int(11) default '0', + status tinyint(4) default '0' +) ENGINE=InnoDB; +INSERT INTO t1 VALUES (4077711111,'SeanWheeler',90,2,20020111112846,500,00000000000000,-1,2,3,1); +INSERT INTO t1 VALUES (9197722223,'berry',90,3,20020111112809,500,20020102114532,501,4,10,0); +INSERT INTO t1 VALUES (650,'San Francisco',0,0,20011227111336,342,00000000000000,-1,1,24,1); +INSERT INTO t1 VALUES (302467,'Sue\'s Subshop',90,3,20020109113241,500,20020102115111,501,7,24,0); +INSERT INTO t1 VALUES (6014911113,'SudzCarwash',520,1,20020102115234,500,20020102115259,501,33,32768,0); +INSERT INTO t1 VALUES (333,'tubs',99,2,20020109113440,501,20020109113440,500,3,10,0); +CREATE TABLE t2 ( + number bigint(20) NOT NULL default '0', + cname char(15) NOT NULL default '', + carrier_id smallint(6) NOT NULL default '0', + privacy tinyint(4) NOT NULL default '0', + last_mod_date timestamp NOT NULL, + last_mod_id smallint(6) NOT NULL default '0', + last_app_date timestamp NOT NULL, + last_app_id smallint(6) default '-1', + version smallint(6) NOT NULL default '0', + assigned_scps int(11) default '0', + status tinyint(4) default '0' +) ENGINE=InnoDB; +INSERT INTO t2 VALUES (4077711111,'SeanWheeler',0,2,20020111112853,500,00000000000000,-1,2,3,1); +INSERT INTO t2 VALUES (9197722223,'berry',90,3,20020111112818,500,20020102114532,501,4,10,0); +INSERT INTO t2 VALUES (650,'San Francisco',90,0,20020109113158,342,00000000000000,-1,1,24,1); +INSERT INTO t2 VALUES (333,'tubs',99,2,20020109113453,501,20020109113453,500,3,10,0); +select * from t1; +select * from t2; +delete t1, t2 from t1 left join t2 on t1.number=t2.number where (t1.carrier_id=90 and t1.number=t2.number) or (t2.carrier_id=90 and t1.number=t2.number) or (t1.carrier_id=90 and t2.number is null); +select * from t1; +select * from t2; +select * from t2; +drop table t1,t2; + +# +# A simple test with some isolation levels +# TODO: Make this into a test using replication to really test how +# this works. +# + +create table t1 (id int unsigned not null auto_increment, code tinyint unsigned not null, name char(20) not null, primary key (id), key (code), unique (name)) engine=innodb; + +BEGIN; +SET SESSION TRANSACTION ISOLATION LEVEL SERIALIZABLE; +SELECT @@tx_isolation,@@global.tx_isolation; +insert into t1 (code, name) values (1, 'Tim'), (1, 'Monty'), (2, 'David'); +select id, code, name from t1 order by id; +COMMIT; + +BEGIN; +SET SESSION TRANSACTION ISOLATION LEVEL REPEATABLE READ; +insert into t1 (code, name) values (2, 'Erik'), (3, 'Sasha'); +select id, code, name from t1 order by id; +COMMIT; + +SET binlog_format='MIXED'; +BEGIN; +SET SESSION TRANSACTION ISOLATION LEVEL READ UNCOMMITTED; +insert into t1 (code, name) values (3, 'Jeremy'), (4, 'Matt'); +select id, code, name from t1 order by id; +COMMIT; +DROP TABLE t1; + +# +# Test of multi-table-update +# +create table t1 (n int(10), d int(10)) engine=innodb; +create table t2 (n int(10), d int(10)) engine=innodb; +insert into t1 values(1,1),(1,2); +insert into t2 values(1,10),(2,20); +UPDATE t1,t2 SET t1.d=t2.d,t2.d=30 WHERE t1.n=t2.n; +select * from t1; +select * from t2; +drop table t1,t2; + +# +# Bug #29136 erred multi-delete on trans table does not rollback +# + +# prepare +--disable_warnings +drop table if exists t1, t2; +--enable_warnings +CREATE TABLE t1 (a int, PRIMARY KEY (a)); +CREATE TABLE t2 (a int, PRIMARY KEY (a)) ENGINE=InnoDB; +create trigger trg_del_t2 after delete on t2 for each row + insert into t1 values (1); +insert into t1 values (1); +insert into t2 values (1),(2); + + +# exec cases A, B - see multi_update.test + +# A. send_error() w/o send_eof() branch + +--error ER_DUP_ENTRY +delete t2 from t2; + +# check + +select count(*) from t2 /* must be 2 as restored after rollback caused by the error */; + +# cleanup bug#29136 + +drop table t1, t2; + + +# +# Bug #29136 erred multi-delete on trans table does not rollback +# + +# prepare +--disable_warnings +drop table if exists t1, t2; +--enable_warnings +CREATE TABLE t1 (a int, PRIMARY KEY (a)); +CREATE TABLE t2 (a int, PRIMARY KEY (a)) ENGINE=InnoDB; +create trigger trg_del_t2 after delete on t2 for each row + insert into t1 values (1); +insert into t1 values (1); +insert into t2 values (1),(2); + + +# exec cases A, B - see multi_update.test + +# A. send_error() w/o send_eof() branch + +--error ER_DUP_ENTRY +delete t2 from t2; + +# check + +select count(*) from t2 /* must be 2 as restored after rollback caused by the error */; + +# cleanup bug#29136 + +drop table t1, t2; + + +# +# Testing of IFNULL +# +create table t1 (a int, b int) engine=innodb; +insert into t1 values(20,null); +select t2.b, ifnull(t2.b,"this is null") from t1 as t2 left join t1 as t3 on +t2.b=t3.a; +select t2.b, ifnull(t2.b,"this is null") from t1 as t2 left join t1 as t3 on +t2.b=t3.a order by 1; +insert into t1 values(10,null); +select t2.b, ifnull(t2.b,"this is null") from t1 as t2 left join t1 as t3 on +t2.b=t3.a order by 1; +drop table t1; + +# +# Test of read_through not existing const_table +# + +create table t1 (a varchar(10) not null) engine=myisam; +create table t2 (b varchar(10) not null unique) engine=innodb; +select t1.a from t1,t2 where t1.a=t2.b; +drop table t1,t2; +create table t1 (a int not null, b int, primary key (a)) engine = innodb; +create table t2 (a int not null, b int, primary key (a)) engine = innodb; +insert into t1 values (10, 20); +insert into t2 values (10, 20); +update t1, t2 set t1.b = 150, t2.b = t1.b where t2.a = t1.a and t1.a = 10; +drop table t1,t2; + +# +# Test of multi-table-delete with foreign key constraints +# + +CREATE TABLE t1 (id INT NOT NULL, PRIMARY KEY (id)) ENGINE=INNODB; +CREATE TABLE t2 (id INT PRIMARY KEY, t1_id INT, INDEX par_ind (t1_id), FOREIGN KEY (t1_id) REFERENCES t1(id) ON DELETE CASCADE ) ENGINE=INNODB; +insert into t1 set id=1; +insert into t2 set id=1, t1_id=1; +delete t1,t2 from t1,t2 where t1.id=t2.t1_id; +select * from t1; +select * from t2; +drop table t2,t1; +CREATE TABLE t1(id INT NOT NULL, PRIMARY KEY (id)) ENGINE=INNODB; +CREATE TABLE t2(id INT PRIMARY KEY, t1_id INT, INDEX par_ind (t1_id) ) ENGINE=INNODB; +INSERT INTO t1 VALUES(1); +INSERT INTO t2 VALUES(1, 1); +SELECT * from t1; +UPDATE t1,t2 SET t1.id=t1.id+1, t2.t1_id=t1.id+1; +SELECT * from t1; +UPDATE t1,t2 SET t1.id=t1.id+1 where t1.id!=t2.id; +SELECT * from t1; +DROP TABLE t1,t2; + +# +# Test of range_optimizer +# + +set autocommit=0; + +CREATE TABLE t1 (id CHAR(15) NOT NULL, value CHAR(40) NOT NULL, PRIMARY KEY(id)) ENGINE=InnoDB; + +CREATE TABLE t2 (id CHAR(15) NOT NULL, value CHAR(40) NOT NULL, PRIMARY KEY(id)) ENGINE=InnoDB; + +CREATE TABLE t3 (id1 CHAR(15) NOT NULL, id2 CHAR(15) NOT NULL, PRIMARY KEY(id1, id2)) ENGINE=InnoDB; + +INSERT INTO t3 VALUES("my-test-1", "my-test-2"); +COMMIT; + +INSERT INTO t1 VALUES("this-key", "will disappear"); +INSERT INTO t2 VALUES("this-key", "will also disappear"); +DELETE FROM t3 WHERE id1="my-test-1"; + +SELECT * FROM t1; +SELECT * FROM t2; +SELECT * FROM t3; +ROLLBACK; + +SELECT * FROM t1; +SELECT * FROM t2; +SELECT * FROM t3; +SELECT * FROM t3 WHERE id1="my-test-1" LOCK IN SHARE MODE; +COMMIT; +set autocommit=1; +DROP TABLE t1,t2,t3; + +# +# Check update with conflicting key +# + +CREATE TABLE t1 (a int not null primary key, b int not null, unique (b)) engine=innodb; +INSERT INTO t1 values (1,1),(2,2),(3,3),(4,4),(5,5),(6,6),(7,7),(8,8),(9,9); +# We need the a < 1000 test here to quard against the halloween problems +UPDATE t1 set a=a+100 where b between 2 and 3 and a < 1000; +SELECT * from t1; +drop table t1; + +# +# Test multi update with different join methods +# + +CREATE TABLE t1 (a int not null primary key, b int not null, key (b)) engine=innodb; +CREATE TABLE t2 (a int not null primary key, b int not null, key (b)) engine=innodb; +INSERT INTO t1 values (1,1),(2,2),(3,3),(4,4),(5,5),(6,6),(7,7),(8,8),(9,9),(10,10),(11,11),(12,12); +INSERT INTO t2 values (1,1),(2,2),(3,3),(4,4),(5,5),(6,6),(7,7),(8,8),(9,9); + +# Full join, without key +update t1,t2 set t1.a=t1.a+100; +select * from t1; + +# unique key +update t1,t2 set t1.a=t1.a+100 where t1.a=101; +select * from t1; + +# ref key +update t1,t2 set t1.b=t1.b+10 where t1.b=2; +select * from t1; + +# Range key (in t1) +update t1,t2 set t1.b=t1.b+2,t2.b=t1.b+10 where t1.b between 3 and 5 and t1.a=t2.a+100; +select * from t1; +select * from t2; + +drop table t1,t2; +CREATE TABLE t2 ( NEXT_T BIGINT NOT NULL PRIMARY KEY) ENGINE=MyISAM; +CREATE TABLE t1 ( B_ID INTEGER NOT NULL PRIMARY KEY) ENGINE=InnoDB; +SET AUTOCOMMIT=0; +INSERT INTO t1 ( B_ID ) VALUES ( 1 ); +INSERT INTO t2 ( NEXT_T ) VALUES ( 1 ); +ROLLBACK; +SELECT * FROM t1; +drop table t1,t2; +create table t1 ( pk int primary key, parent int not null, child int not null, index (parent) ) engine = innodb; +insert into t1 values (1,0,4), (2,1,3), (3,2,1), (4,1,2); +select distinct parent,child from t1 order by parent; +drop table t1; + +# +# Test that MySQL priorities clustered indexes +# +create table t1 (a int not null auto_increment primary key, b int, c int, key(c)) engine=innodb; +create table t2 (a int not null auto_increment primary key, b int); +insert into t1 (b) values (null),(null),(null),(null),(null),(null),(null); +insert into t2 (a) select b from t1; +insert into t1 (b) select b from t2; +insert into t2 (a) select b from t1; +insert into t1 (a) select b from t2; +insert into t2 (a) select b from t1; +insert into t1 (a) select b from t2; +insert into t2 (a) select b from t1; +insert into t1 (a) select b from t2; +insert into t2 (a) select b from t1; +insert into t1 (a) select b from t2; +select count(*) from t1; +--replace_column 9 # +explain select * from t1 where c between 1 and 2500; +update t1 set c=a; +--replace_column 9 # +explain select * from t1 where c between 1 and 2500; +drop table t1,t2; + +# +# Test of UPDATE ... ORDER BY +# + +create table t1 (id int primary key auto_increment, fk int, index index_fk (fk)) engine=innodb; + +insert into t1 (id) values (null),(null),(null),(null),(null); +update t1 set fk=69 where fk is null order by id limit 1; +SELECT * from t1; +drop table t1; + +create table t1 (a int not null, b int not null, key (a)); +insert into t1 values (1,1),(1,2),(1,3),(3,1),(3,2),(3,3),(3,1),(3,2),(3,3),(2,1),(2,2),(2,3); +SET @tmp=0; +update t1 set b=(@tmp:=@tmp+1) order by a; +update t1 set b=99 where a=1 order by b asc limit 1; +update t1 set b=100 where a=1 order by b desc limit 2; +update t1 set a=a+10+b where a=1 order by b; +select * from t1 order by a,b; +drop table t1; + +# +# Test of multi-table-updates (bug #1980). +# + +create table t1 ( c char(8) not null ) engine=innodb; +insert into t1 values ('0'),('1'),('2'),('3'),('4'),('5'),('6'),('7'),('8'),('9'); +insert into t1 values ('A'),('B'),('C'),('D'),('E'),('F'); + +alter table t1 add b char(8) not null; +alter table t1 add a char(8) not null; +alter table t1 add primary key (a,b,c); +update t1 set a=c, b=c; + +create table t2 (c char(8) not null, b char(8) not null, a char(8) not null, primary key(a,b,c)) engine=innodb; +insert into t2 select * from t1; + +delete t1,t2 from t2,t1 where t1.a<'B' and t2.b=t1.b; +drop table t1,t2; + +# +# test autoincrement with TRUNCATE +# + +SET AUTOCOMMIT=1; +create table t1 (a integer auto_increment primary key) engine=innodb; +insert into t1 (a) values (NULL),(NULL); +truncate table t1; +insert into t1 (a) values (NULL),(NULL); +SELECT * from t1; +drop table t1; + +# +# Test dictionary handling with spaceand quoting +# + +CREATE TABLE t1 (`id 1` INT NOT NULL, PRIMARY KEY (`id 1`)) ENGINE=INNODB; +CREATE TABLE t2 (id INT PRIMARY KEY, t1_id INT, INDEX par_ind (t1_id), FOREIGN KEY (`t1_id`) REFERENCES `t1`(`id 1`) ON DELETE CASCADE ) ENGINE=INNODB; +#show create table t2; +drop table t2,t1; + +# +# Test of multi updated and foreign keys +# + +create table `t1` (`id` int( 11 ) not null ,primary key ( `id` )) engine = innodb; +insert into `t1`values ( 1 ) ; +create table `t2` (`id` int( 11 ) not null default '0',unique key `id` ( `id` ) ,constraint `t1_id_fk` foreign key ( `id` ) references `t1` (`id` )) engine = innodb; +insert into `t2`values ( 1 ) ; +create table `t3` (`id` int( 11 ) not null default '0',key `id` ( `id` ) ,constraint `t2_id_fk` foreign key ( `id` ) references `t2` (`id` )) engine = innodb; +insert into `t3`values ( 1 ) ; +--error 1451 +delete t3,t2,t1 from t1,t2,t3 where t1.id =1 and t2.id = t1.id and t3.id = t2.id; +--error 1451 +update t1,t2,t3 set t3.id=5, t2.id=6, t1.id=7 where t1.id =1 and t2.id = t1.id and t3.id = t2.id; +--error 1054 +update t3 set t3.id=7 where t1.id =1 and t2.id = t1.id and t3.id = t2.id; +drop table t3,t2,t1; + +# +# test for recursion depth limit +# +create table t1( + id int primary key, + pid int, + index(pid), + foreign key(pid) references t1(id) on delete cascade) engine=innodb; +insert into t1 values(0,0),(1,0),(2,1),(3,2),(4,3),(5,4),(6,5),(7,6), + (8,7),(9,8),(10,9),(11,10),(12,11),(13,12),(14,13),(15,14); +-- error 1451 +delete from t1 where id=0; +delete from t1 where id=15; +delete from t1 where id=0; + +drop table t1; + +# +# Test timestamps +# + +CREATE TABLE t1 (col1 int(1))ENGINE=InnoDB; +CREATE TABLE t2 (col1 int(1),stamp TIMESTAMP,INDEX stamp_idx +(stamp))ENGINE=InnoDB; +insert into t1 values (1),(2),(3); +# Note that timestamp 3 is wrong +insert into t2 values (1, 20020204130000),(2, 20020204130000),(4,20020204310000 ),(5,20020204230000); +SELECT col1 FROM t1 UNION SELECT col1 FROM t2 WHERE stamp < +'20020204120000' GROUP BY col1; +drop table t1,t2; + +# +# Test by Francois MASUREL +# + +CREATE TABLE t1 ( + `id` int(10) unsigned NOT NULL auto_increment, + `id_object` int(10) unsigned default '0', + `id_version` int(10) unsigned NOT NULL default '1', + `label` varchar(100) NOT NULL default '', + `description` text, + PRIMARY KEY (`id`), + KEY `id_object` (`id_object`), + KEY `id_version` (`id_version`) +) ENGINE=InnoDB; + +INSERT INTO t1 VALUES("6", "3382", "9", "Test", NULL), ("7", "102", "5", "Le Pekin (Test)", NULL),("584", "1794", "4", "Test de resto", NULL),("837", "1822", "6", "Test 3", NULL),("1119", "3524", "1", "Societe Test", NULL),("1122", "3525", "1", "Fournisseur Test", NULL); + +CREATE TABLE t2 ( + `id` int(10) unsigned NOT NULL auto_increment, + `id_version` int(10) unsigned NOT NULL default '1', + PRIMARY KEY (`id`), + KEY `id_version` (`id_version`) +) ENGINE=InnoDB; + +INSERT INTO t2 VALUES("3524", "1"),("3525", "1"),("1794", "4"),("102", "5"),("1822", "6"),("3382", "9"); + +SELECT t2.id, t1.`label` FROM t2 INNER JOIN +(SELECT t1.id_object as id_object FROM t1 WHERE t1.`label` LIKE '%test%') AS lbl +ON (t2.id = lbl.id_object) INNER JOIN t1 ON (t2.id = t1.id_object); +drop table t1,t2; + +create table t1 (a int, b varchar(200), c text not null) checksum=1 engine=myisam; +create table t2 (a int, b varchar(200), c text not null) checksum=0 engine=innodb; +create table t3 (a int, b varchar(200), c text not null) checksum=1 engine=innodb; +insert t1 values (1, "aaa", "bbb"), (NULL, "", "ccccc"), (0, NULL, ""); +insert t2 select * from t1; +insert t3 select * from t1; +checksum table t1, t2, t3, t4 quick; +checksum table t1, t2, t3, t4; +checksum table t1, t2, t3, t4 extended; +#show table status; +drop table t1,t2,t3; + +# +# Test problem with refering to different fields in same table in UNION +# (Bug #2552) +# +create table t1 (id int, name char(10) not null, name2 char(10) not null) engine=innodb; +insert into t1 values(1,'first','fff'),(2,'second','sss'),(3,'third','ttt'); +select trim(name2) from t1 union all select trim(name) from t1 union all select trim(id) from t1; +drop table t1; + +# +# Bug2160 +# +create table t1 (a int) engine=innodb; +create table t2 like t1; +drop table t1,t2; + +# +# Test of automaticly created foreign keys +# + +create table t1 (id int(11) not null, id2 int(11) not null, unique (id,id2)) engine=innodb; +create table t2 (id int(11) not null, constraint t1_id_fk foreign key ( id ) references t1 (id)) engine = innodb; +show create table t1; +show create table t2; +create index id on t2 (id); +show create table t2; +create index id2 on t2 (id); +show create table t2; +drop index id2 on t2; +--error ER_DROP_INDEX_FK +drop index id on t2; +show create table t2; +drop table t2; + +create table t2 (id int(11) not null, id2 int(11) not null, constraint t1_id_fk foreign key (id,id2) references t1 (id,id2)) engine = innodb; +show create table t2; +create unique index id on t2 (id,id2); +show create table t2; +drop table t2; + +# Check foreign key columns created in different order than key columns +create table t2 (id int(11) not null, id2 int(11) not null, unique (id,id2),constraint t1_id_fk foreign key (id2,id) references t1 (id,id2)) engine = innodb; +show create table t2; +drop table t2; + +create table t2 (id int(11) not null, id2 int(11) not null, unique (id,id2), constraint t1_id_fk foreign key (id) references t1 (id)) engine = innodb; +show create table t2; +drop table t2; + +create table t2 (id int(11) not null, id2 int(11) not null, unique (id,id2),constraint t1_id_fk foreign key (id2,id) references t1 (id,id2)) engine = innodb; +show create table t2; +drop table t2; + +create table t2 (id int(11) not null auto_increment, id2 int(11) not null, constraint t1_id_fk foreign key (id) references t1 (id), primary key (id), index (id,id2)) engine = innodb; +show create table t2; +drop table t2; + +create table t2 (id int(11) not null auto_increment, id2 int(11) not null, constraint t1_id_fk foreign key (id) references t1 (id)) engine= innodb; +show create table t2; +alter table t2 add index id_test (id), add index id_test2 (id,id2); +show create table t2; +drop table t2; + +# Test error handling + +# Embedded server doesn't chdir to data directory +--replace_result $MYSQLTEST_VARDIR . mysqld.1/data/ '' +--error ER_WRONG_FK_DEF +create table t2 (id int(11) not null, id2 int(11) not null, constraint t1_id_fk foreign key (id2,id) references t1 (id)) engine = innodb; + +# bug#3749 + +create table t2 (a int auto_increment primary key, b int, index(b), foreign key (b) references t1(id), unique(b)) engine=innodb; +show create table t2; +drop table t2; +create table t2 (a int auto_increment primary key, b int, foreign key (b) references t1(id), foreign key (b) references t1(id), unique(b)) engine=innodb; +show create table t2; +drop table t2, t1; + + +# +# Bug #6126: Duplicate columns in keys gives misleading error message +# +--error 1060 +create table t1 (c char(10), index (c,c)) engine=innodb; +--error 1060 +create table t1 (c1 char(10), c2 char(10), index (c1,c2,c1)) engine=innodb; +--error 1060 +create table t1 (c1 char(10), c2 char(10), index (c1,c1,c2)) engine=innodb; +--error 1060 +create table t1 (c1 char(10), c2 char(10), index (c2,c1,c1)) engine=innodb; +create table t1 (c1 char(10), c2 char(10)) engine=innodb; +--error 1060 +alter table t1 add key (c1,c1); +--error 1060 +alter table t1 add key (c2,c1,c1); +--error 1060 +alter table t1 add key (c1,c2,c1); +--error 1060 +alter table t1 add key (c1,c1,c2); +drop table t1; + +# +# Bug #4082: integer truncation +# + +create table t1(a int(1) , b int(1)) engine=innodb; +insert into t1 values ('1111', '3333'); +select distinct concat(a, b) from t1; +drop table t1; + +# +# BUG#7709 test case - Boolean fulltext query against unsupported +# engines does not fail +# + +CREATE TABLE t1 ( a char(10) ) ENGINE=InnoDB; +--error 1214 +SELECT a FROM t1 WHERE MATCH (a) AGAINST ('test' IN BOOLEAN MODE); +DROP TABLE t1; + +# +# check null values #1 +# + +--disable_warnings +CREATE TABLE t1 (a_id tinyint(4) NOT NULL default '0', PRIMARY KEY (a_id)) ENGINE=InnoDB DEFAULT CHARSET=latin1; +INSERT INTO t1 VALUES (1),(2),(3); +CREATE TABLE t2 (b_id tinyint(4) NOT NULL default '0',b_a tinyint(4) NOT NULL default '0', PRIMARY KEY (b_id), KEY (b_a), + CONSTRAINT fk_b_a FOREIGN KEY (b_a) REFERENCES t1 (a_id) ON DELETE CASCADE ON UPDATE NO ACTION) ENGINE=InnoDB DEFAULT CHARSET=latin1; +--enable_warnings +INSERT INTO t2 VALUES (1,1),(2,1),(3,1),(4,2),(5,2); +SELECT * FROM (SELECT t1.*,GROUP_CONCAT(t2.b_id SEPARATOR ',') as b_list FROM (t1 LEFT JOIN (t2) on t1.a_id = t2.b_a) GROUP BY t1.a_id ) AS xyz; +DROP TABLE t2; +DROP TABLE t1; + +# +# Bug#11816 - Truncate table doesn't work with temporary innodb tables +# This is not an innodb bug, but we test it using innodb. +# +create temporary table t1 (a int) engine=innodb; +insert into t1 values (4711); +truncate t1; +insert into t1 values (42); +select * from t1; +drop table t1; +# Show that it works with permanent tables too. +create table t1 (a int) engine=innodb; +insert into t1 values (4711); +truncate t1; +insert into t1 values (42); +select * from t1; +drop table t1; + +# +# Bug #13025 Server crash during filesort +# + +create table t1 (a int not null, b int not null, c blob not null, d int not null, e int, primary key (a,b,c(255),d)) engine=innodb; +insert into t1 values (2,2,"b",2,2),(1,1,"a",1,1),(3,3,"ab",3,3); +select * from t1 order by a,b,c,d; +explain select * from t1 order by a,b,c,d; +drop table t1; + +# +# BUG#11039,#13218 Wrong key length in min() +# + +create table t1 (a char(1), b char(1), key(a, b)) engine=innodb; +insert into t1 values ('8', '6'), ('4', '7'); +select min(a) from t1; +select min(b) from t1 where a='8'; +drop table t1; + +# End of 4.1 tests + +# +# range optimizer problem +# + +create table t1 (x bigint unsigned not null primary key) engine=innodb; +insert into t1(x) values (0xfffffffffffffff0),(0xfffffffffffffff1); +select * from t1; +select count(*) from t1 where x>0; +select count(*) from t1 where x=0; +select count(*) from t1 where x<0; +select count(*) from t1 where x < -16; +select count(*) from t1 where x = -16; +explain select count(*) from t1 where x > -16; +select count(*) from t1 where x > -16; +select * from t1 where x > -16; +select count(*) from t1 where x = 18446744073709551601; +drop table t1; + + +# Test for testable InnoDB status variables. This test +# uses previous ones(pages_created, rows_deleted, ...). +--replace_result 512 511 +show status like "Innodb_buffer_pool_pages_total"; +show status like "Innodb_page_size"; +show status like "Innodb_rows_deleted"; +show status like "Innodb_rows_inserted"; +show status like "Innodb_rows_updated"; + +# Test for row locks InnoDB status variables. +show status like "Innodb_row_lock_waits"; +show status like "Innodb_row_lock_current_waits"; +show status like "Innodb_row_lock_time"; +show status like "Innodb_row_lock_time_max"; +show status like "Innodb_row_lock_time_avg"; + +# Test for innodb_sync_spin_loops variable +show variables like "innodb_sync_spin_loops"; +set global innodb_sync_spin_loops=1000; +show variables like "innodb_sync_spin_loops"; +set global innodb_sync_spin_loops=0; +show variables like "innodb_sync_spin_loops"; +set global innodb_sync_spin_loops=20; +show variables like "innodb_sync_spin_loops"; + +# Test for innodb_thread_concurrency variable +SET @old_innodb_thread_concurrency= @@global.innodb_thread_concurrency; +show variables like "innodb_thread_concurrency"; +set global innodb_thread_concurrency=1001; +show variables like "innodb_thread_concurrency"; +set global innodb_thread_concurrency=0; +show variables like "innodb_thread_concurrency"; +set global innodb_thread_concurrency=16; +show variables like "innodb_thread_concurrency"; +SET @@global.innodb_thread_concurrency= @old_innodb_thread_concurrency; + +# Test for innodb_concurrency_tickets variable +show variables like "innodb_concurrency_tickets"; +set global innodb_concurrency_tickets=1000; +show variables like "innodb_concurrency_tickets"; +set global innodb_concurrency_tickets=0; +show variables like "innodb_concurrency_tickets"; +set global innodb_concurrency_tickets=500; +show variables like "innodb_concurrency_tickets"; + +# Test for innodb_thread_sleep_delay variable +show variables like "innodb_thread_sleep_delay"; +set global innodb_thread_sleep_delay=100000; +show variables like "innodb_thread_sleep_delay"; +set global innodb_thread_sleep_delay=0; +show variables like "innodb_thread_sleep_delay"; +set global innodb_thread_sleep_delay=10000; +show variables like "innodb_thread_sleep_delay"; + +# +# Test varchar +# + +let $default=`select @@storage_engine`; +set storage_engine=INNODB; +source include/varchar.inc; + +# +# Some errors/warnings on create +# + +# Embedded server doesn't chdir to data directory +--replace_result $MYSQLTEST_VARDIR . mysqld.1/data/ '' +create table t1 (v varchar(65530), key(v)); +drop table t1; +create table t1 (v varchar(65536)); +show create table t1; +drop table t1; +create table t1 (v varchar(65530) character set utf8); +show create table t1; +drop table t1; + +eval set storage_engine=$default; + +# InnoDB specific varchar tests +create table t1 (v varchar(16384)) engine=innodb; +drop table t1; + +# +# BUG#11039 Wrong key length in min() +# + +create table t1 (a char(1), b char(1), key(a, b)) engine=innodb; +insert into t1 values ('8', '6'), ('4', '7'); +select min(a) from t1; +select min(b) from t1 where a='8'; +drop table t1; + +# +# Bug #11080 & #11005 Multi-row REPLACE fails on a duplicate key error +# + +CREATE TABLE t1 ( `a` int(11) NOT NULL auto_increment, `b` int(11) default NULL,PRIMARY KEY (`a`),UNIQUE KEY `b` (`b`)) ENGINE=innodb; +insert into t1 (b) values (1); +replace into t1 (b) values (2), (1), (3); +select * from t1; +truncate table t1; +insert into t1 (b) values (1); +replace into t1 (b) values (2); +replace into t1 (b) values (1); +replace into t1 (b) values (3); +select * from t1; +drop table t1; + +create table t1 (rowid int not null auto_increment, val int not null,primary +key (rowid), unique(val)) engine=innodb; +replace into t1 (val) values ('1'),('2'); +replace into t1 (val) values ('1'),('2'); +--error ER_DUP_ENTRY +insert into t1 (val) values ('1'),('2'); +select * from t1; +drop table t1; + +# +# Test that update does not change internal auto-increment value +# + +create table t1 (a int not null auto_increment primary key, val int) engine=InnoDB; +insert into t1 (val) values (1); +update t1 set a=2 where a=1; +# We should get the following error because InnoDB does not update the counter +--error ER_DUP_ENTRY +insert into t1 (val) values (1); +select * from t1; +drop table t1; +# +# Bug #10465 +# + +--disable_warnings +CREATE TABLE t1 (GRADE DECIMAL(4) NOT NULL, PRIMARY KEY (GRADE)) ENGINE=INNODB; +--enable_warnings +INSERT INTO t1 (GRADE) VALUES (151),(252),(343); +SELECT GRADE FROM t1 WHERE GRADE > 160 AND GRADE < 300; +SELECT GRADE FROM t1 WHERE GRADE= 151; +DROP TABLE t1; + +# +# Bug #12340 multitable delete deletes only one record +# +create table t1 (f1 varchar(10), f2 varchar(10), primary key (f1,f2)) engine=innodb; +create table t2 (f3 varchar(10), f4 varchar(10), key (f4)) engine=innodb; +insert into t2 values ('aa','cc'); +insert into t1 values ('aa','bb'),('aa','cc'); +delete t1 from t1,t2 where f1=f3 and f4='cc'; +select * from t1; +drop table t1,t2; + +# +# Test that the slow TRUNCATE implementation resets autoincrement columns +# (bug #11946) +# + +CREATE TABLE t1 ( +id INTEGER NOT NULL AUTO_INCREMENT, PRIMARY KEY (id) +) ENGINE=InnoDB; + +CREATE TABLE t2 ( +id INTEGER NOT NULL, +FOREIGN KEY (id) REFERENCES t1 (id) +) ENGINE=InnoDB; + +INSERT INTO t1 (id) VALUES (NULL); +SELECT * FROM t1; +TRUNCATE t1; +INSERT INTO t1 (id) VALUES (NULL); +SELECT * FROM t1; + +# continued from above; test that doing a slow TRUNCATE on a table with 0 +# rows resets autoincrement columns +DELETE FROM t1; +TRUNCATE t1; +INSERT INTO t1 (id) VALUES (NULL); +SELECT * FROM t1; +DROP TABLE t2, t1; + +# Test that foreign keys in temporary tables are not accepted (bug #12084) +CREATE TABLE t1 +( + id INT PRIMARY KEY +) ENGINE=InnoDB; + +--error 1005,1005 +CREATE TEMPORARY TABLE t2 +( + id INT NOT NULL PRIMARY KEY, + b INT, + FOREIGN KEY (b) REFERENCES test.t1(id) +) ENGINE=InnoDB; +DROP TABLE t1; + +# +# Test that index column max sizes are honored (bug #13315) +# + +# prefix index +create table t1 (col1 varchar(2000), index (col1(767))) + character set = latin1 engine = innodb; + +# normal indexes +create table t2 (col1 char(255), index (col1)) + character set = latin1 engine = innodb; +create table t3 (col1 binary(255), index (col1)) + character set = latin1 engine = innodb; +create table t4 (col1 varchar(767), index (col1)) + character set = latin1 engine = innodb; +create table t5 (col1 varchar(767) primary key) + character set = latin1 engine = innodb; +create table t6 (col1 varbinary(767) primary key) + character set = latin1 engine = innodb; +create table t7 (col1 text, index(col1(767))) + character set = latin1 engine = innodb; +create table t8 (col1 blob, index(col1(767))) + character set = latin1 engine = innodb; + +# multi-column indexes are allowed to be longer +create table t9 (col1 varchar(512), col2 varchar(512), index(col1, col2)) + character set = latin1 engine = innodb; + +show create table t9; + +drop table t1, t2, t3, t4, t5, t6, t7, t8, t9; + +# these should have their index length trimmed +create table t1 (col1 varchar(768), index(col1)) + character set = latin1 engine = innodb; +create table t2 (col1 varbinary(768), index(col1)) + character set = latin1 engine = innodb; +create table t3 (col1 text, index(col1(768))) + character set = latin1 engine = innodb; +create table t4 (col1 blob, index(col1(768))) + character set = latin1 engine = innodb; + +show create table t1; + +drop table t1, t2, t3, t4; + +# these should be refused +--error 1071 +create table t1 (col1 varchar(768) primary key) + character set = latin1 engine = innodb; +--error 1071 +create table t2 (col1 varbinary(768) primary key) + character set = latin1 engine = innodb; +--error 1071 +create table t3 (col1 text, primary key(col1(768))) + character set = latin1 engine = innodb; +--error 1071 +create table t4 (col1 blob, primary key(col1(768))) + character set = latin1 engine = innodb; + +# +# Test improved foreign key error messages (bug #3443) +# + +CREATE TABLE t1 +( + id INT PRIMARY KEY +) ENGINE=InnoDB; + +CREATE TABLE t2 +( + v INT, + CONSTRAINT c1 FOREIGN KEY (v) REFERENCES t1(id) +) ENGINE=InnoDB; + +--error 1452 +INSERT INTO t2 VALUES(2); + +INSERT INTO t1 VALUES(1); +INSERT INTO t2 VALUES(1); + +--error 1451 +DELETE FROM t1 WHERE id = 1; + +--error 1217 +DROP TABLE t1; + +SET FOREIGN_KEY_CHECKS=0; +DROP TABLE t1; +SET FOREIGN_KEY_CHECKS=1; + +--error 1452 +INSERT INTO t2 VALUES(3); + +DROP TABLE t2; +# +# Test that checksum table uses a consistent read Bug #12669 +# +connect (a,localhost,root,,); +connect (b,localhost,root,,); +connection a; +create table t1(a int not null) engine=innodb DEFAULT CHARSET=latin1; +insert into t1 values (1),(2); +set autocommit=0; +checksum table t1; +connection b; +insert into t1 values(3); +connection a; +# +# Here checksum should not see insert +# +checksum table t1; +connection a; +commit; +checksum table t1; +commit; +drop table t1; +# +# autocommit = 1 +# +connection a; +create table t1(a int not null) engine=innodb DEFAULT CHARSET=latin1; +insert into t1 values (1),(2); +set autocommit=1; +checksum table t1; +connection b; +set autocommit=1; +insert into t1 values(3); +connection a; +# +# Here checksum sees insert +# +checksum table t1; +drop table t1; + +connection default; +disconnect a; +disconnect b; + +# tests for bugs #9802 and #13778 + +# test that FKs between invalid types are not accepted + +set foreign_key_checks=0; +create table t2 (a int primary key, b int, foreign key (b) references t1(a)) engine = innodb; +# Embedded server doesn't chdir to data directory +--replace_result $MYSQLTEST_VARDIR . mysqld.1/data/ '' +-- error 1005 +create table t1(a char(10) primary key, b varchar(20)) engine = innodb; +set foreign_key_checks=1; +drop table t2; + +# test that FKs between different charsets are not accepted in CREATE even +# when f_k_c is 0 + +set foreign_key_checks=0; +create table t1(a varchar(10) primary key) engine = innodb DEFAULT CHARSET=latin1; +# Embedded server doesn't chdir to data directory +--replace_result $MYSQLTEST_VARDIR . mysqld.1/data/ '' +-- error 1005 +create table t2 (a varchar(10), foreign key (a) references t1(a)) engine = innodb DEFAULT CHARSET=utf8; +set foreign_key_checks=1; +drop table t1; + +# test that invalid datatype conversions with ALTER are not allowed + +set foreign_key_checks=0; +create table t2 (a varchar(10), foreign key (a) references t1(a)) engine = innodb; +create table t1(a varchar(10) primary key) engine = innodb; +-- error 1025,1025 +alter table t1 modify column a int; +set foreign_key_checks=1; +drop table t2,t1; + +# test that charset conversions with ALTER are allowed when f_k_c is 0 + +set foreign_key_checks=0; +create table t2 (a varchar(10), foreign key (a) references t1(a)) engine = innodb DEFAULT CHARSET=latin1; +create table t1(a varchar(10) primary key) engine = innodb DEFAULT CHARSET=latin1; +alter table t1 convert to character set utf8; +set foreign_key_checks=1; +drop table t2,t1; + +# test that RENAME does not allow invalid charsets when f_k_c is 0 + +set foreign_key_checks=0; +create table t2 (a varchar(10), foreign key (a) references t1(a)) engine = innodb DEFAULT CHARSET=latin1; +create table t3(a varchar(10) primary key) engine = innodb DEFAULT CHARSET=utf8; +# Embedded server doesn't chdir to data directory +--replace_result $MYSQLTEST_VARDIR . mysqld.1/data/ '' +-- error 1025 +rename table t3 to t1; +set foreign_key_checks=1; +drop table t2,t3; + +# test that foreign key errors are reported correctly (Bug #15550) + +create table t1(a int primary key) row_format=redundant engine=innodb; +create table t2(a int primary key,constraint foreign key(a)references t1(a)) row_format=compact engine=innodb; +create table t3(a int primary key) row_format=compact engine=innodb; +create table t4(a int primary key,constraint foreign key(a)references t3(a)) row_format=redundant engine=innodb; + +insert into t1 values(1); +insert into t3 values(1); +-- error 1452 +insert into t2 values(2); +-- error 1452 +insert into t4 values(2); +insert into t2 values(1); +insert into t4 values(1); +-- error 1451 +update t1 set a=2; +-- error 1452 +update t2 set a=2; +-- error 1451 +update t3 set a=2; +-- error 1452 +update t4 set a=2; +-- error 1451 +truncate t1; +-- error 1451 +truncate t3; +truncate t2; +truncate t4; +truncate t1; +truncate t3; + +drop table t4,t3,t2,t1; + + +# +# Test that we can create a large (>1K) key +# +create table t1 (a varchar(255) character set utf8, + b varchar(255) character set utf8, + c varchar(255) character set utf8, + d varchar(255) character set utf8, + key (a,b,c,d)) engine=innodb; +drop table t1; +--error ER_TOO_LONG_KEY +create table t1 (a varchar(255) character set utf8, + b varchar(255) character set utf8, + c varchar(255) character set utf8, + d varchar(255) character set utf8, + e varchar(255) character set utf8, + key (a,b,c,d,e)) engine=innodb; + + +# test the padding of BINARY types and collations (Bug #14189) + +create table t1 (s1 varbinary(2),primary key (s1)) engine=innodb; +create table t2 (s1 binary(2),primary key (s1)) engine=innodb; +create table t3 (s1 varchar(2) binary,primary key (s1)) engine=innodb; +create table t4 (s1 char(2) binary,primary key (s1)) engine=innodb; + +insert into t1 values (0x41),(0x4120),(0x4100); +-- error ER_DUP_ENTRY +insert into t2 values (0x41),(0x4120),(0x4100); +insert into t2 values (0x41),(0x4120); +-- error ER_DUP_ENTRY +insert into t3 values (0x41),(0x4120),(0x4100); +insert into t3 values (0x41),(0x4100); +-- error ER_DUP_ENTRY +insert into t4 values (0x41),(0x4120),(0x4100); +insert into t4 values (0x41),(0x4100); +select hex(s1) from t1; +select hex(s1) from t2; +select hex(s1) from t3; +select hex(s1) from t4; +drop table t1,t2,t3,t4; + +create table t1 (a int primary key,s1 varbinary(3) not null unique) engine=innodb; +create table t2 (s1 binary(2) not null, constraint c foreign key(s1) references t1(s1) on update cascade) engine=innodb; + +insert into t1 values(1,0x4100),(2,0x41),(3,0x4120),(4,0x42); +-- error 1452 +insert into t2 values(0x42); +insert into t2 values(0x41); +select hex(s1) from t2; +update t1 set s1=0x123456 where a=2; +select hex(s1) from t2; +-- error 1451 +update t1 set s1=0x12 where a=1; +-- error 1451 +update t1 set s1=0x12345678 where a=1; +-- error 1451 +update t1 set s1=0x123457 where a=1; +update t1 set s1=0x1220 where a=1; +select hex(s1) from t2; +update t1 set s1=0x1200 where a=1; +select hex(s1) from t2; +update t1 set s1=0x4200 where a=1; +select hex(s1) from t2; +-- error 1451 +delete from t1 where a=1; +delete from t1 where a=2; +update t2 set s1=0x4120; +-- error 1451 +delete from t1; +delete from t1 where a!=3; +select a,hex(s1) from t1; +select hex(s1) from t2; + +drop table t2,t1; + +create table t1 (a int primary key,s1 varchar(2) binary not null unique) engine=innodb; +create table t2 (s1 char(2) binary not null, constraint c foreign key(s1) references t1(s1) on update cascade) engine=innodb; + +insert into t1 values(1,0x4100),(2,0x41); +insert into t2 values(0x41); +select hex(s1) from t2; +update t1 set s1=0x1234 where a=1; +select hex(s1) from t2; +update t1 set s1=0x12 where a=2; +select hex(s1) from t2; +delete from t1 where a=1; +-- error 1451 +delete from t1 where a=2; +select a,hex(s1) from t1; +select hex(s1) from t2; + +drop table t2,t1; +# Ensure that <tablename>_ibfk_0 is not mistreated as a +# generated foreign key identifier. (Bug #16387) + +CREATE TABLE t1(a INT, PRIMARY KEY(a)) ENGINE=InnoDB; +CREATE TABLE t2(a INT) ENGINE=InnoDB; +ALTER TABLE t2 ADD FOREIGN KEY (a) REFERENCES t1(a); +ALTER TABLE t2 DROP FOREIGN KEY t2_ibfk_1; +ALTER TABLE t2 ADD CONSTRAINT t2_ibfk_0 FOREIGN KEY (a) REFERENCES t1(a); +ALTER TABLE t2 DROP FOREIGN KEY t2_ibfk_0; +SHOW CREATE TABLE t2; +DROP TABLE t2,t1; + +# +# Test case for bug #16229: MySQL/InnoDB uses full explicit table locks in trigger processing +# + +connect (a,localhost,root,,); +connect (b,localhost,root,,); +connection a; +create table t1(a int not null, b int, c int, d int, primary key(a)) engine=innodb; +insert into t1(a) values (1),(2),(3); +commit; +connection b; +set autocommit = 0; +update t1 set b = 5 where a = 2; +connection a; +delimiter |; +create trigger t1t before insert on t1 for each row begin set NEW.b = NEW.a * 10 + 5, NEW.c = NEW.a / 10; end | +delimiter ;| +set autocommit = 0; +connection a; +insert into t1(a) values (10),(20),(30),(40),(50),(60),(70),(80),(90),(100), +(11),(21),(31),(41),(51),(61),(71),(81),(91),(101), +(12),(22),(32),(42),(52),(62),(72),(82),(92),(102), +(13),(23),(33),(43),(53),(63),(73),(83),(93),(103), +(14),(24),(34),(44),(54),(64),(74),(84),(94),(104); +connection b; +commit; +connection a; +commit; +drop trigger t1t; +drop table t1; +disconnect a; +disconnect b; +# +# Another trigger test +# +connect (a,localhost,root,,); +connect (b,localhost,root,,); +connection a; +create table t1(a int not null, b int, c int, d int, primary key(a)) engine=innodb; +create table t2(a int not null, b int, c int, d int, primary key(a)) engine=innodb; +create table t3(a int not null, b int, c int, d int, primary key(a)) engine=innodb; +create table t4(a int not null, b int, c int, d int, primary key(a)) engine=innodb; +create table t5(a int not null, b int, c int, d int, primary key(a)) engine=innodb; +insert into t1(a) values (1),(2),(3); +insert into t2(a) values (1),(2),(3); +insert into t3(a) values (1),(2),(3); +insert into t4(a) values (1),(2),(3); +insert into t3(a) values (5),(7),(8); +insert into t4(a) values (5),(7),(8); +insert into t5(a) values (1),(2),(3),(4),(5),(6),(7),(8),(9),(10),(11),(12); + +delimiter |; +create trigger t1t before insert on t1 for each row begin + INSERT INTO t2 SET a = NEW.a; +end | + +create trigger t2t before insert on t2 for each row begin + DELETE FROM t3 WHERE a = NEW.a; +end | + +create trigger t3t before delete on t3 for each row begin + UPDATE t4 SET b = b + 1 WHERE a = OLD.a; +end | + +create trigger t4t before update on t4 for each row begin + UPDATE t5 SET b = b + 1 where a = NEW.a; +end | +delimiter ;| +commit; +set autocommit = 0; +update t1 set b = b + 5 where a = 1; +update t2 set b = b + 5 where a = 1; +update t3 set b = b + 5 where a = 1; +update t4 set b = b + 5 where a = 1; +insert into t5(a) values(20); +connection b; +set autocommit = 0; +insert into t1(a) values(7); +insert into t2(a) values(8); +delete from t2 where a = 3; +update t4 set b = b + 1 where a = 3; +commit; +drop trigger t1t; +drop trigger t2t; +drop trigger t3t; +drop trigger t4t; +drop table t1, t2, t3, t4, t5; +connection default; +disconnect a; +disconnect b; + +# +# Test that cascading updates leading to duplicate keys give the correct +# error message (bug #9680) +# + +CREATE TABLE t1 ( + field1 varchar(8) NOT NULL DEFAULT '', + field2 varchar(8) NOT NULL DEFAULT '', + PRIMARY KEY (field1, field2) +) ENGINE=InnoDB; + +CREATE TABLE t2 ( + field1 varchar(8) NOT NULL DEFAULT '' PRIMARY KEY, + FOREIGN KEY (field1) REFERENCES t1 (field1) + ON DELETE CASCADE ON UPDATE CASCADE +) ENGINE=InnoDB; + +INSERT INTO t1 VALUES ('old', 'somevalu'); +INSERT INTO t1 VALUES ('other', 'anyvalue'); + +INSERT INTO t2 VALUES ('old'); +INSERT INTO t2 VALUES ('other'); + +--error ER_FOREIGN_DUPLICATE_KEY +UPDATE t1 SET field1 = 'other' WHERE field2 = 'somevalu'; + +DROP TABLE t2; +DROP TABLE t1; + +# +# Bug#18477 - MySQL/InnoDB Ignoring Foreign Keys in ALTER TABLE +# +create table t1 ( + c1 bigint not null, + c2 bigint not null, + primary key (c1), + unique key (c2) +) engine=innodb; +# +create table t2 ( + c1 bigint not null, + primary key (c1) +) engine=innodb; +# +alter table t1 add constraint c2_fk foreign key (c2) + references t2(c1) on delete cascade; +show create table t1; +# +alter table t1 drop foreign key c2_fk; +show create table t1; +# +drop table t1, t2; + +# +# Bug #14360: problem with intervals +# + +create table t1(a date) engine=innodb; +create table t2(a date, key(a)) engine=innodb; +insert into t1 values('2005-10-01'); +insert into t2 values('2005-10-01'); +select * from t1, t2 + where t2.a between t1.a - interval 2 day and t1.a + interval 2 day; +drop table t1, t2; + +create table t1 (id int not null, f_id int not null, f int not null, +primary key(f_id, id)) engine=innodb; +create table t2 (id int not null,s_id int not null,s varchar(200), +primary key(id)) engine=innodb; +INSERT INTO t1 VALUES (8, 1, 3); +INSERT INTO t1 VALUES (1, 2, 1); +INSERT INTO t2 VALUES (1, 0, ''); +INSERT INTO t2 VALUES (8, 1, ''); +commit; +DELETE ml.* FROM t1 AS ml LEFT JOIN t2 AS mm ON (mm.id=ml.id) +WHERE mm.id IS NULL; +select ml.* from t1 as ml left join t2 as mm on (mm.id=ml.id) +where mm.id is null lock in share mode; +drop table t1,t2; + +# +# Test case where X-locks on unused rows should be released in a +# update (because READ COMMITTED isolation level) +# + +connect (a,localhost,root,,); +connect (b,localhost,root,,); +connection a; +create table t1(a int not null, b int, primary key(a)) engine=innodb; +insert into t1 values(1,1),(2,2),(3,1),(4,2),(5,1),(6,2),(7,3); +commit; +SET binlog_format='MIXED'; +set autocommit = 0; +SET SESSION TRANSACTION ISOLATION LEVEL READ COMMITTED; +update t1 set b = 5 where b = 1; +connection b; +SET binlog_format='MIXED'; +set autocommit = 0; +SET SESSION TRANSACTION ISOLATION LEVEL READ COMMITTED; +# +# X-lock to record (7,3) should be released in a update +# +select * from t1 where a = 7 and b = 3 for update; +connection a; +commit; +connection b; +commit; +drop table t1; +connection default; +disconnect a; +disconnect b; + +# +# Test case where no locks should be released (because we are not +# using READ COMMITTED isolation level) +# + +connect (a,localhost,root,,); +connect (b,localhost,root,,); +connection a; +create table t1(a int not null, b int, primary key(a)) engine=innodb; +insert into t1 values(1,1),(2,2),(3,1),(4,2),(5,1),(6,2); +commit; +set autocommit = 0; +select * from t1 lock in share mode; +update t1 set b = 5 where b = 1; +connection b; +set autocommit = 0; +# +# S-lock to records (2,2),(4,2), and (6,2) should not be released in a update +# +--error 1205 +select * from t1 where a = 2 and b = 2 for update; +# +# X-lock to record (1,1),(3,1),(5,1) should not be released in a update +# +--error 1205 +connection a; +commit; +connection b; +commit; +connection default; +disconnect a; +disconnect b; +drop table t1; + +# +# Consistent read should be used in following selects +# +# 1) INSERT INTO ... SELECT +# 2) UPDATE ... = ( SELECT ...) +# 3) CREATE ... SELECT + +connect (a,localhost,root,,); +connect (b,localhost,root,,); +connection a; +create table t1(a int not null, b int, primary key(a)) engine=innodb; +insert into t1 values (1,2),(5,3),(4,2); +create table t2(d int not null, e int, primary key(d)) engine=innodb; +insert into t2 values (8,6),(12,1),(3,1); +commit; +set autocommit = 0; +select * from t2 for update; +connection b; +SET binlog_format='MIXED'; +set autocommit = 0; +SET SESSION TRANSACTION ISOLATION LEVEL READ COMMITTED; +insert into t1 select * from t2; +update t1 set b = (select e from t2 where a = d); +create table t3(d int not null, e int, primary key(d)) engine=innodb +select * from t2; +commit; +connection a; +commit; +connection default; +disconnect a; +disconnect b; +drop table t1, t2, t3; + +# +# Consistent read should not be used if +# +# (a) isolation level is serializable OR +# (b) select ... lock in share mode OR +# (c) select ... for update +# +# in following queries: +# +# 1) INSERT INTO ... SELECT +# 2) UPDATE ... = ( SELECT ...) +# 3) CREATE ... SELECT + +connect (a,localhost,root,,); +connect (b,localhost,root,,); +connect (c,localhost,root,,); +connect (d,localhost,root,,); +connect (e,localhost,root,,); +connect (f,localhost,root,,); +connect (g,localhost,root,,); +connect (h,localhost,root,,); +connect (i,localhost,root,,); +connect (j,localhost,root,,); +connection a; +create table t1(a int not null, b int, primary key(a)) engine=innodb; +insert into t1 values (1,2),(5,3),(4,2); +create table t2(a int not null, b int, primary key(a)) engine=innodb; +insert into t2 values (8,6),(12,1),(3,1); +create table t3(d int not null, b int, primary key(d)) engine=innodb; +insert into t3 values (8,6),(12,1),(3,1); +create table t5(a int not null, b int, primary key(a)) engine=innodb; +insert into t5 values (1,2),(5,3),(4,2); +create table t6(d int not null, e int, primary key(d)) engine=innodb; +insert into t6 values (8,6),(12,1),(3,1); +create table t8(a int not null, b int, primary key(a)) engine=innodb; +insert into t8 values (1,2),(5,3),(4,2); +create table t9(d int not null, e int, primary key(d)) engine=innodb; +insert into t9 values (8,6),(12,1),(3,1); +commit; +set autocommit = 0; +select * from t2 for update; +connection b; +SET binlog_format='MIXED'; +set autocommit = 0; +SET SESSION TRANSACTION ISOLATION LEVEL SERIALIZABLE; +--send +insert into t1 select * from t2; +connection c; +SET binlog_format='MIXED'; +set autocommit = 0; +SET SESSION TRANSACTION ISOLATION LEVEL SERIALIZABLE; +--send +update t3 set b = (select b from t2 where a = d); +connection d; +SET binlog_format='MIXED'; +set autocommit = 0; +SET SESSION TRANSACTION ISOLATION LEVEL SERIALIZABLE; +--send +create table t4(a int not null, b int, primary key(a)) engine=innodb select * from t2; +connection e; +SET binlog_format='MIXED'; +set autocommit = 0; +SET SESSION TRANSACTION ISOLATION LEVEL READ COMMITTED; +--send +insert into t5 (select * from t2 lock in share mode); +connection f; +SET binlog_format='MIXED'; +set autocommit = 0; +SET SESSION TRANSACTION ISOLATION LEVEL READ COMMITTED; +--send +update t6 set e = (select b from t2 where a = d lock in share mode); +connection g; +SET binlog_format='MIXED'; +set autocommit = 0; +SET SESSION TRANSACTION ISOLATION LEVEL READ COMMITTED; +--send +create table t7(a int not null, b int, primary key(a)) engine=innodb select * from t2 lock in share mode; +connection h; +SET binlog_format='MIXED'; +set autocommit = 0; +SET SESSION TRANSACTION ISOLATION LEVEL READ COMMITTED; +--send +insert into t8 (select * from t2 for update); +connection i; +SET binlog_format='MIXED'; +set autocommit = 0; +SET SESSION TRANSACTION ISOLATION LEVEL READ COMMITTED; +--send +update t9 set e = (select b from t2 where a = d for update); +connection j; +SET binlog_format='MIXED'; +set autocommit = 0; +SET SESSION TRANSACTION ISOLATION LEVEL READ COMMITTED; +--send +create table t10(a int not null, b int, primary key(a)) engine=innodb select * from t2 for update; + +connection b; +--error 1205 +reap; + +connection c; +--error 1205 +reap; + +connection d; +--error 1205 +reap; + +connection e; +--error 1205 +reap; + +connection f; +--error 1205 +reap; + +connection g; +--error 1205 +reap; + +connection h; +--error 1205 +reap; + +connection i; +--error 1205 +reap; + +connection j; +--error 1205 +reap; + +connection a; +commit; + +connection default; +disconnect a; +disconnect b; +disconnect c; +disconnect d; +disconnect e; +disconnect f; +disconnect g; +disconnect h; +disconnect i; +disconnect j; +drop table t1, t2, t3, t5, t6, t8, t9; + +# bug 18934, "InnoDB crashes when table uses column names like DB_ROW_ID" +--error 1005 +CREATE TABLE t1 (DB_ROW_ID int) engine=innodb; + +# +# Bug #17152: Wrong result with BINARY comparison on aliased column +# + +CREATE TABLE t1 ( + a BIGINT(20) NOT NULL, + PRIMARY KEY (a) + ) ENGINE=INNODB DEFAULT CHARSET=UTF8; + +CREATE TABLE t2 ( + a BIGINT(20) NOT NULL, + b VARCHAR(128) NOT NULL, + c TEXT NOT NULL, + PRIMARY KEY (a,b), + KEY idx_t2_b_c (b,c(200)), + CONSTRAINT t_fk FOREIGN KEY (a) REFERENCES t1 (a) + ON DELETE CASCADE + ) ENGINE=INNODB DEFAULT CHARSET=UTF8; + +INSERT INTO t1 VALUES (1); +INSERT INTO t2 VALUES (1, 'bar', 'vbar'); +INSERT INTO t2 VALUES (1, 'BAR2', 'VBAR'); +INSERT INTO t2 VALUES (1, 'bar_bar', 'bibi'); +INSERT INTO t2 VALUES (1, 'customer_over', '1'); + +SELECT * FROM t2 WHERE b = 'customer_over'; +SELECT * FROM t2 WHERE BINARY b = 'customer_over'; +SELECT DISTINCT p0.a FROM t2 p0 WHERE p0.b = 'customer_over'; +/* Bang: Empty result set, above was expected: */ +SELECT DISTINCT p0.a FROM t2 p0 WHERE BINARY p0.b = 'customer_over'; +SELECT p0.a FROM t2 p0 WHERE BINARY p0.b = 'customer_over'; + +drop table t2, t1; + +# +# Test optimize on table with open transaction +# + +CREATE TABLE t1 ( a int ) ENGINE=innodb; +BEGIN; +INSERT INTO t1 VALUES (1); +OPTIMIZE TABLE t1; +DROP TABLE t1; + +# +# Bug #24741 (existing cascade clauses disappear when adding foreign keys) +# + +CREATE TABLE t1 (id int PRIMARY KEY, f int NOT NULL, INDEX(f)) ENGINE=InnoDB; + +CREATE TABLE t2 (id int PRIMARY KEY, f INT NOT NULL, + CONSTRAINT t2_t1 FOREIGN KEY (id) REFERENCES t1 (id) + ON DELETE CASCADE ON UPDATE CASCADE) ENGINE=InnoDB; + +ALTER TABLE t2 ADD FOREIGN KEY (f) REFERENCES t1 (f) ON +DELETE CASCADE ON UPDATE CASCADE; + +SHOW CREATE TABLE t2; +DROP TABLE t2, t1; + +# +# Bug #25927: Prevent ALTER TABLE ... MODIFY ... NOT NULL on columns +# for which there is a foreign key constraint ON ... SET NULL. +# + +CREATE TABLE t1 (a INT, INDEX(a)) ENGINE=InnoDB; +CREATE TABLE t2 (a INT, INDEX(a)) ENGINE=InnoDB; +INSERT INTO t1 VALUES (1); +INSERT INTO t2 VALUES (1); +ALTER TABLE t2 ADD FOREIGN KEY (a) REFERENCES t1 (a) ON DELETE SET NULL; +# mysqltest first does replace_regex, then replace_result +--replace_regex /'[^']*test\/#sql-[0-9a-f_]*'/'#sql-temporary'/ +# Embedded server doesn't chdir to data directory +--replace_result $MYSQLTEST_VARDIR . mysqld.1/data/ '' +--error 1025 +ALTER TABLE t2 MODIFY a INT NOT NULL; +DELETE FROM t1; +DROP TABLE t2,t1; + +# +# Bug #26835: table corruption after delete+insert +# + +CREATE TABLE t1 (a VARCHAR(5) COLLATE utf8_unicode_ci PRIMARY KEY) +ENGINE=InnoDB; +INSERT INTO t1 VALUES (0xEFBCA4EFBCA4EFBCA4); +DELETE FROM t1; +INSERT INTO t1 VALUES ('DDD'); +SELECT * FROM t1; +DROP TABLE t1; + +# +# Bug #23313 (AUTO_INCREMENT=# not reported back for InnoDB tables) +# Bug #21404 (AUTO_INCREMENT value reset when Adding FKEY (or ALTER?)) +# + +CREATE TABLE t1 (id int PRIMARY KEY AUTO_INCREMENT) ENGINE=InnoDB +AUTO_INCREMENT=42; + +INSERT INTO t1 VALUES (0),(347),(0); +SELECT * FROM t1; + +SHOW CREATE TABLE t1; + +CREATE TABLE t2 (id int PRIMARY KEY) ENGINE=InnoDB; +INSERT INTO t2 VALUES(42),(347),(348); +ALTER TABLE t1 ADD CONSTRAINT t1_t2 FOREIGN KEY (id) REFERENCES t2(id); +SHOW CREATE TABLE t1; + +DROP TABLE t1,t2; + +# +# Bug #21101 (Prints wrong error message if max row size is too large) +# +set innodb_strict_mode=on; +--error 1118 +CREATE TABLE t1 ( + c01 CHAR(255), c02 CHAR(255), c03 CHAR(255), c04 CHAR(255), + c05 CHAR(255), c06 CHAR(255), c07 CHAR(255), c08 CHAR(255), + c09 CHAR(255), c10 CHAR(255), c11 CHAR(255), c12 CHAR(255), + c13 CHAR(255), c14 CHAR(255), c15 CHAR(255), c16 CHAR(255), + c17 CHAR(255), c18 CHAR(255), c19 CHAR(255), c20 CHAR(255), + c21 CHAR(255), c22 CHAR(255), c23 CHAR(255), c24 CHAR(255), + c25 CHAR(255), c26 CHAR(255), c27 CHAR(255), c28 CHAR(255), + c29 CHAR(255), c30 CHAR(255), c31 CHAR(255), c32 CHAR(255) + ) ENGINE = InnoDB; + +# +# Bug #31860 InnoDB assumes AUTOINC values can only be positive. +# +DROP TABLE IF EXISTS t1; +CREATE TABLE t1( + id BIGINT(20) NOT NULL AUTO_INCREMENT PRIMARY KEY + ) ENGINE=InnoDB; +INSERT INTO t1 VALUES(-10); +SELECT * FROM t1; +# +# NOTE: The server really needs to be restarted at this point +# for the test to be useful. +# +# Without the fix InnoDB would trip over an assertion here. +INSERT INTO t1 VALUES(NULL); +# The next value should be 1 and not -9 or a -ve number +SELECT * FROM t1; +DROP TABLE t1; + +# +# Bug #21409 Incorrect result returned when in READ-COMMITTED with +# query_cache ON +# +CONNECT (c1,localhost,root,,); +CONNECT (c2,localhost,root,,); +CONNECTION c1; +SET binlog_format='MIXED'; +SET TX_ISOLATION='read-committed'; +SET AUTOCOMMIT=0; +DROP TABLE IF EXISTS t1, t2; +CREATE TABLE t1 ( a int ) ENGINE=InnoDB; +CREATE TABLE t2 LIKE t1; +SELECT * FROM t2; +CONNECTION c2; +SET binlog_format='MIXED'; +SET TX_ISOLATION='read-committed'; +SET AUTOCOMMIT=0; +INSERT INTO t1 VALUES (1); +COMMIT; +CONNECTION c1; +SELECT * FROM t1 WHERE a=1; +DISCONNECT c1; +DISCONNECT c2; +CONNECT (c1,localhost,root,,); +CONNECT (c2,localhost,root,,); +CONNECTION c1; +SET binlog_format='MIXED'; +SET TX_ISOLATION='read-committed'; +SET AUTOCOMMIT=0; +SELECT * FROM t2; +CONNECTION c2; +SET binlog_format='MIXED'; +SET TX_ISOLATION='read-committed'; +SET AUTOCOMMIT=0; +INSERT INTO t1 VALUES (2); +COMMIT; +CONNECTION c1; +# The result set below should be the same for both selects +SELECT * FROM t1 WHERE a=2; +SELECT * FROM t1 WHERE a=2; +DROP TABLE t1; +DROP TABLE t2; +DISCONNECT c1; +DISCONNECT c2; +CONNECTION default; + +# +# Bug #29157 UPDATE, changed rows incorrect +# +create table t1 (i int, j int) engine=innodb; +insert into t1 (i, j) values (1, 1), (2, 2); +--enable_info +update t1 set j = 2; +--disable_info +drop table t1; + +# +# Bug #32440 InnoDB free space info does not appear in SHOW TABLE STATUS or +# I_S +# +create table t1 (id int) comment='this is a comment' engine=innodb; +select table_comment, data_free > 0 as data_free_is_set + from information_schema.tables + where table_schema='test' and table_name = 't1'; +drop table t1; + +# +# Bug 34920 test +# +CONNECTION default; +CREATE TABLE t1 ( + c1 INT(10) UNSIGNED NOT NULL AUTO_INCREMENT, + c2 VARCHAR(128) NOT NULL, + PRIMARY KEY(c1) +) ENGINE=InnoDB DEFAULT CHARSET=utf8 AUTO_INCREMENT=100; + +CREATE TABLE t2 ( + c1 INT(10) UNSIGNED NOT NULL AUTO_INCREMENT, + c2 INT(10) UNSIGNED DEFAULT NULL, + PRIMARY KEY(c1) +) ENGINE=InnoDB DEFAULT CHARSET=utf8 AUTO_INCREMENT=200; + +SELECT AUTO_INCREMENT FROM INFORMATION_SCHEMA.TABLES WHERE table_name = 't2'; +ALTER TABLE t2 ADD CONSTRAINT t1_t2_1 FOREIGN KEY(c1) REFERENCES t1(c1); +SELECT AUTO_INCREMENT FROM INFORMATION_SCHEMA.TABLES WHERE table_name = 't2'; +DROP TABLE t2; +DROP TABLE t1; +# End 34920 test +# +# Bug #29507 TRUNCATE shows to many rows effected +# +CONNECTION default; +CREATE TABLE t1 (c1 int default NULL, + c2 int default NULL +) ENGINE=InnoDB DEFAULT CHARSET=latin1; + +--enable_info +TRUNCATE TABLE t1; + +INSERT INTO t1 VALUES (1, 1), (2, 2), (3, 3), (4, 4), (5, 5); +TRUNCATE TABLE t1; + +--disable_info +DROP TABLE t1; +# +# Bug#35537 Innodb doesn't increment handler_update and handler_delete. +# +-- disable_query_log +-- disable_result_log + +CONNECT (c1,localhost,root,,); + +DROP TABLE IF EXISTS bug35537; +CREATE TABLE bug35537 ( + c1 int +) ENGINE=InnoDB; + +INSERT INTO bug35537 VALUES (1); + +-- enable_result_log + +SHOW SESSION STATUS LIKE 'Handler_update%'; +SHOW SESSION STATUS LIKE 'Handler_delete%'; + +UPDATE bug35537 SET c1 = 2 WHERE c1 = 1; +DELETE FROM bug35537 WHERE c1 = 2; + +SHOW SESSION STATUS LIKE 'Handler_update%'; +SHOW SESSION STATUS LIKE 'Handler_delete%'; + +DROP TABLE bug35537; + +DISCONNECT c1; +CONNECTION default; + +####################################################################### +# # +# Please, DO NOT TOUCH this file as well as the innodb.result file. # +# These files are to be modified ONLY BY INNOBASE guys. # +# # +# Use innodb_mysql.[test|result] files instead. # +# # +# If nevertheless you need to make some changes here, please, forward # +# your commit message To: dev(a)innodb.com Cc: dev-innodb(a)mysql.com # +# (otherwise your changes may be erased). # +# # +####################################################################### === removed file 'mysql-test/t/innodb.test' --- a/mysql-test/t/innodb.test 2009-01-23 12:22:05 +0000 +++ b/mysql-test/t/innodb.test 1970-01-01 00:00:00 +0000 @@ -1,2538 +0,0 @@ -####################################################################### -# # -# Please, DO NOT TOUCH this file as well as the innodb.result file. # -# These files are to be modified ONLY BY INNOBASE guys. # -# # -# Use innodb_mysql.[test|result] files instead. # -# # -# If nevertheless you need to make some changes here, please, forward # -# your commit message To: dev(a)innodb.com Cc: dev-innodb(a)mysql.com # -# (otherwise your changes may be erased). # -# # -####################################################################### - --- source include/have_innodb.inc - -# -# Small basic test with ignore -# - ---disable_warnings -drop table if exists t1,t2,t3,t4; -drop database if exists mysqltest; ---enable_warnings - -create table t1 (id int unsigned not null auto_increment, code tinyint unsigned not null, name char(20) not null, primary key (id), key (code), unique (name)) engine=innodb; - -insert into t1 (code, name) values (1, 'Tim'), (1, 'Monty'), (2, 'David'), (2, 'Erik'), (3, 'Sasha'), (3, 'Jeremy'), (4, 'Matt'); -select id, code, name from t1 order by id; - -update ignore t1 set id = 8, name = 'Sinisa' where id < 3; -select id, code, name from t1 order by id; -update ignore t1 set id = id + 10, name = 'Ralph' where id < 4; -select id, code, name from t1 order by id; - -drop table t1; - -# -# A bit bigger test -# The 'replace_column' statements are needed because the cardinality calculated -# by innodb is not always the same between runs -# - -CREATE TABLE t1 ( - id int(11) NOT NULL auto_increment, - parent_id int(11) DEFAULT '0' NOT NULL, - level tinyint(4) DEFAULT '0' NOT NULL, - PRIMARY KEY (id), - KEY parent_id (parent_id), - KEY level (level) -) engine=innodb; -INSERT INTO t1 VALUES (1,0,0),(3,1,1),(4,1,1),(8,2,2),(9,2,2),(17,3,2),(22,4,2),(24,4,2),(28,5,2),(29,5,2),(30,5,2),(31,6,2),(32,6,2),(33,6,2),(203,7,2),(202,7,2),(20,3,2),(157,0,0),(193,5,2),(40,7,2),(2,1,1),(15,2,2),(6,1,1),(34,6,2),(35,6,2),(16,3,2),(7,1,1),(36,7,2),(18,3,2),(26,5,2),(27,5,2),(183,4,2),(38,7,2),(25,5,2),(37,7,2),(21,4,2),(19,3,2),(5,1,1),(179,5,2); -update t1 set parent_id=parent_id+100; -select * from t1 where parent_id=102; -update t1 set id=id+1000; --- error ER_DUP_ENTRY,1022 -update t1 set id=1024 where id=1009; -select * from t1; -update ignore t1 set id=id+1; # This will change all rows -select * from t1; -update ignore t1 set id=1023 where id=1010; -select * from t1 where parent_id=102; ---replace_column 9 # -explain select level from t1 where level=1; ---replace_column 9 # -explain select level,id from t1 where level=1; ---replace_column 9 # -explain select level,id,parent_id from t1 where level=1; -select level,id from t1 where level=1; -select level,id,parent_id from t1 where level=1; -optimize table t1; ---replace_column 7 # -show keys from t1; -drop table t1; - -# -# Test replace -# - -CREATE TABLE t1 ( - gesuchnr int(11) DEFAULT '0' NOT NULL, - benutzer_id int(11) DEFAULT '0' NOT NULL, - PRIMARY KEY (gesuchnr,benutzer_id) -) engine=innodb; - -replace into t1 (gesuchnr,benutzer_id) values (2,1); -replace into t1 (gesuchnr,benutzer_id) values (1,1); -replace into t1 (gesuchnr,benutzer_id) values (1,1); -select * from t1; -drop table t1; - -# -# test delete using hidden_primary_key -# - -create table t1 (a int) engine=innodb; -insert into t1 values (1), (2); -optimize table t1; -delete from t1 where a = 1; -select * from t1; -check table t1; -drop table t1; - -create table t1 (a int,b varchar(20)) engine=innodb; -insert into t1 values (1,""), (2,"testing"); -delete from t1 where a = 1; -select * from t1; -create index skr on t1 (a); -insert into t1 values (3,""), (4,"testing"); -analyze table t1; ---replace_column 7 # -show keys from t1; -drop table t1; - - -# Test of reading on secondary key with may be null - -create table t1 (a int,b varchar(20),key(a)) engine=innodb; -insert into t1 values (1,""), (2,"testing"); -select * from t1 where a = 1; -drop table t1; - -# -# Test rollback -# - -create table t1 (n int not null primary key) engine=innodb; -set autocommit=0; -insert into t1 values (4); -rollback; -select n, "after rollback" from t1; -insert into t1 values (4); -commit; -select n, "after commit" from t1; -commit; -insert into t1 values (5); --- error ER_DUP_ENTRY -insert into t1 values (4); -commit; -select n, "after commit" from t1; -set autocommit=1; -insert into t1 values (6); --- error ER_DUP_ENTRY -insert into t1 values (4); -select n from t1; -set autocommit=0; -# -# savepoints -# -begin; -savepoint `my_savepoint`; -insert into t1 values (7); -savepoint `savept2`; -insert into t1 values (3); -select n from t1; -savepoint savept3; -rollback to savepoint savept2; ---error 1305 -rollback to savepoint savept3; -rollback to savepoint savept2; -release savepoint `my_savepoint`; -select n from t1; --- error 1305 -rollback to savepoint `my_savepoint`; ---error 1305 -rollback to savepoint savept2; -insert into t1 values (8); -savepoint sv; -commit; -savepoint sv; -set autocommit=1; -# nop -rollback; -drop table t1; - -# -# Test for commit and FLUSH TABLES WITH READ LOCK -# - -create table t1 (n int not null primary key) engine=innodb; -start transaction; -insert into t1 values (4); -flush tables with read lock; -# -# Current code can't handle a read lock in middle of transaction -#--error 1223; -commit; -unlock tables; -commit; -select * from t1; -drop table t1; - -# -# Testing transactions -# - -create table t1 ( id int NOT NULL PRIMARY KEY, nom varchar(64)) engine=innodb; -begin; -insert into t1 values(1,'hamdouni'); -select id as afterbegin_id,nom as afterbegin_nom from t1; -rollback; -select id as afterrollback_id,nom as afterrollback_nom from t1; -set autocommit=0; -insert into t1 values(2,'mysql'); -select id as afterautocommit0_id,nom as afterautocommit0_nom from t1; -rollback; -select id as afterrollback_id,nom as afterrollback_nom from t1; -set autocommit=1; -drop table t1; - -# -# Simple not autocommit test -# - -CREATE TABLE t1 (id char(8) not null primary key, val int not null) engine=innodb; -insert into t1 values ('pippo', 12); --- error ER_DUP_ENTRY -insert into t1 values ('pippo', 12); # Gives error -delete from t1; -delete from t1 where id = 'pippo'; -select * from t1; - -insert into t1 values ('pippo', 12); -set autocommit=0; -delete from t1; -rollback; -select * from t1; -delete from t1; -commit; -select * from t1; -drop table t1; - -# -# Test of active transactions -# - -create table t1 (a integer) engine=innodb; -start transaction; -rename table t1 to t2; -create table t1 (b integer) engine=innodb; -insert into t1 values (1); -rollback; -drop table t1; -rename table t2 to t1; -drop table t1; -set autocommit=1; - -# -# The following simple tests failed at some point -# - -CREATE TABLE t1 (ID INTEGER NOT NULL PRIMARY KEY, NAME VARCHAR(64)) ENGINE=innodb; -INSERT INTO t1 VALUES (1, 'Jochen'); -select * from t1; -drop table t1; - -CREATE TABLE t1 ( _userid VARCHAR(60) NOT NULL PRIMARY KEY) ENGINE=innodb; -set autocommit=0; -INSERT INTO t1 SET _userid='marc(a)anyware.co.uk'; -COMMIT; -SELECT * FROM t1; -SELECT _userid FROM t1 WHERE _userid='marc(a)anyware.co.uk'; -drop table t1; -set autocommit=1; - -# -# Test when reading on part of unique key -# -CREATE TABLE t1 ( - user_id int(10) DEFAULT '0' NOT NULL, - name varchar(100), - phone varchar(100), - ref_email varchar(100) DEFAULT '' NOT NULL, - detail varchar(200), - PRIMARY KEY (user_id,ref_email) -)engine=innodb; - -INSERT INTO t1 VALUES (10292,'sanjeev','29153373','sansh777(a)hotmail.com','xxx'),(10292,'shirish','2333604','shirish(a)yahoo.com','ddsds'),(10292,'sonali','323232','sonali(a)bolly.com','filmstar'); -select * from t1 where user_id=10292; -INSERT INTO t1 VALUES (10291,'sanjeev','29153373','sansh777(a)hotmail.com','xxx'),(10293,'shirish','2333604','shirish(a)yahoo.com','ddsds'); -select * from t1 where user_id=10292; -select * from t1 where user_id>=10292; -select * from t1 where user_id>10292; -select * from t1 where user_id<10292; -drop table t1; - -# -# Test that keys are created in right order -# - -CREATE TABLE t1 (a int not null, b int not null,c int not null, -key(a),primary key(a,b), unique(c),key(a),unique(b)); ---replace_column 7 # -show index from t1; -drop table t1; - -# -# Test of ALTER TABLE and innodb tables -# - -create table t1 (col1 int not null, col2 char(4) not null, primary key(col1)); -alter table t1 engine=innodb; -insert into t1 values ('1','1'),('5','2'),('2','3'),('3','4'),('4','4'); -select * from t1; -update t1 set col2='7' where col1='4'; -select * from t1; -alter table t1 add co3 int not null; -select * from t1; -update t1 set col2='9' where col1='2'; -select * from t1; -drop table t1; - -# -# INSERT INTO innodb tables -# - -create table t1 (a int not null , b int, primary key (a)) engine = innodb; -create table t2 (a int not null , b int, primary key (a)) engine = myisam; -insert into t1 VALUES (1,3) , (2,3), (3,3); -select * from t1; -insert into t2 select * from t1; -select * from t2; -delete from t1 where b = 3; -select * from t1; -insert into t1 select * from t2; -select * from t1; -select * from t2; -drop table t1,t2; - -# -# ORDER BY on not primary key -# - -CREATE TABLE t1 ( - user_name varchar(12), - password text, - subscribed char(1), - user_id int(11) DEFAULT '0' NOT NULL, - quota bigint(20), - weight double, - access_date date, - access_time time, - approved datetime, - dummy_primary_key int(11) NOT NULL auto_increment, - PRIMARY KEY (dummy_primary_key) -) ENGINE=innodb; -INSERT INTO t1 VALUES ('user_0','somepassword','N',0,0,0,'2000-09-07','23:06:59','2000-09-07 23:06:59',1); -INSERT INTO t1 VALUES ('user_1','somepassword','Y',1,1,1,'2000-09-07','23:06:59','2000-09-07 23:06:59',2); -INSERT INTO t1 VALUES ('user_2','somepassword','N',2,2,1.4142135623731,'2000-09-07','23:06:59','2000-09-07 23:06:59',3); -INSERT INTO t1 VALUES ('user_3','somepassword','Y',3,3,1.7320508075689,'2000-09-07','23:06:59','2000-09-07 23:06:59',4); -INSERT INTO t1 VALUES ('user_4','somepassword','N',4,4,2,'2000-09-07','23:06:59','2000-09-07 23:06:59',5); -select user_name, password , subscribed, user_id, quota, weight, access_date, access_time, approved, dummy_primary_key from t1 order by user_name; -drop table t1; - -# -# Testing of tables without primary keys -# - -CREATE TABLE t1 ( - id int(11) NOT NULL auto_increment, - parent_id int(11) DEFAULT '0' NOT NULL, - level tinyint(4) DEFAULT '0' NOT NULL, - KEY (id), - KEY parent_id (parent_id), - KEY level (level) -) engine=innodb; -INSERT INTO t1 VALUES (1,0,0),(3,1,1),(4,1,1),(8,2,2),(9,2,2),(17,3,2),(22,4,2),(24,4,2),(28,5,2),(29,5,2),(30,5,2),(31,6,2),(32,6,2),(33,6,2),(203,7,2),(202,7,2),(20,3,2),(157,0,0),(193,5,2),(40,7,2),(2,1,1),(15,2,2),(6,1,1),(34,6,2),(35,6,2),(16,3,2),(7,1,1),(36,7,2),(18,3,2),(26,5,2),(27,5,2),(183,4,2),(38,7,2),(25,5,2),(37,7,2),(21,4,2),(19,3,2),(5,1,1); -INSERT INTO t1 values (179,5,2); -update t1 set parent_id=parent_id+100; -select * from t1 where parent_id=102; -update t1 set id=id+1000; -update t1 set id=1024 where id=1009; -select * from t1; -update ignore t1 set id=id+1; # This will change all rows -select * from t1; -update ignore t1 set id=1023 where id=1010; -select * from t1 where parent_id=102; ---replace_column 9 # -explain select level from t1 where level=1; -select level,id from t1 where level=1; -select level,id,parent_id from t1 where level=1; -select level,id from t1 where level=1 order by id; -delete from t1 where level=1; -select * from t1; -drop table t1; - -# -# Test of index only reads -# -CREATE TABLE t1 ( - sca_code char(6) NOT NULL, - cat_code char(6) NOT NULL, - sca_desc varchar(50), - lan_code char(2) NOT NULL, - sca_pic varchar(100), - sca_sdesc varchar(50), - sca_sch_desc varchar(16), - PRIMARY KEY (sca_code, cat_code, lan_code), - INDEX sca_pic (sca_pic) -) engine = innodb ; - -INSERT INTO t1 ( sca_code, cat_code, sca_desc, lan_code, sca_pic, sca_sdesc, sca_sch_desc) VALUES ( 'PD', 'J', 'PENDANT', 'EN', NULL, NULL, 'PENDANT'),( 'RI', 'J', 'RING', 'EN', NULL, NULL, 'RING'),( 'QQ', 'N', 'RING', 'EN', 'not null', NULL, 'RING'); -select count(*) from t1 where sca_code = 'PD'; -select count(*) from t1 where sca_code <= 'PD'; -select count(*) from t1 where sca_pic is null; -alter table t1 drop index sca_pic, add index sca_pic (cat_code, sca_pic); -select count(*) from t1 where sca_code='PD' and sca_pic is null; -select count(*) from t1 where cat_code='E'; - -alter table t1 drop index sca_pic, add index (sca_pic, cat_code); -select count(*) from t1 where sca_code='PD' and sca_pic is null; -select count(*) from t1 where sca_pic >= 'n'; -select sca_pic from t1 where sca_pic is null; -update t1 set sca_pic="test" where sca_pic is null; -delete from t1 where sca_code='pd'; -drop table t1; - -# -# Test of opening table twice and timestamps -# -set @a:=now(); -CREATE TABLE t1 (a int not null, b timestamp not null, primary key (a)) engine=innodb; -insert into t1 (a) values(1),(2),(3); -select t1.a from t1 natural join t1 as t2 where t1.b >= @a order by t1.a; -select a from t1 natural join t1 as t2 where b >= @a order by a; -update t1 set a=5 where a=1; -select a from t1; -drop table t1; - -# -# Test with variable length primary key -# -create table t1 (a varchar(100) not null, primary key(a), b int not null) engine=innodb; -insert into t1 values("hello",1),("world",2); -select * from t1 order by b desc; -optimize table t1; ---replace_column 7 # -show keys from t1; -drop table t1; - -# -# Test of create index with NULL columns -# -create table t1 (i int, j int ) ENGINE=innodb; -insert into t1 values (1,2); -select * from t1 where i=1 and j=2; -create index ax1 on t1 (i,j); -select * from t1 where i=1 and j=2; -drop table t1; - -# -# Test min-max optimization -# - -CREATE TABLE t1 ( - a int3 unsigned NOT NULL, - b int1 unsigned NOT NULL, - UNIQUE (a, b) -) ENGINE = innodb; - -INSERT INTO t1 VALUES (1, 1); -SELECT MIN(B),MAX(b) FROM t1 WHERE t1.a = 1; -drop table t1; - -# -# Test INSERT DELAYED -# - -CREATE TABLE t1 (a int unsigned NOT NULL) engine=innodb; -# Can't test this in 3.23 -# INSERT DELAYED INTO t1 VALUES (1); -INSERT INTO t1 VALUES (1); -SELECT * FROM t1; -DROP TABLE t1; - - -# -# Crash when using many tables (Test case by Jeremy D Zawodny) -# - -create table t1 (a int primary key,b int, c int, d int, e int, f int, g int, h int, i int, j int, k int, l int, m int, n int, o int, p int, q int, r int, s int, t int, u int, v int, w int, x int, y int, z int, a1 int, a2 int, a3 int, a4 int, a5 int, a6 int, a7 int, a8 int, a9 int, b1 int, b2 int, b3 int, b4 int, b5 int, b6 int) engine = innodb; -insert into t1 values (1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1); ---replace_column 9 # -explain select * from t1 where a > 0 and a < 50; -drop table t1; - -# -# Test lock tables -# - -create table t1 (id int NOT NULL,id2 int NOT NULL,id3 int NOT NULL,dummy1 char(30),primary key (id,id2),index index_id3 (id3)) engine=innodb; -insert into t1 values (0,0,0,'ABCDEFGHIJ'),(2,2,2,'BCDEFGHIJK'),(1,1,1,'CDEFGHIJKL'); -LOCK TABLES t1 WRITE; ---error ER_DUP_ENTRY -insert into t1 values (99,1,2,'D'),(1,1,2,'D'); -select id from t1; -select id from t1; -UNLOCK TABLES; -DROP TABLE t1; - -create table t1 (id int NOT NULL,id2 int NOT NULL,id3 int NOT NULL,dummy1 char(30),primary key (id,id2),index index_id3 (id3)) engine=innodb; -insert into t1 values (0,0,0,'ABCDEFGHIJ'),(2,2,2,'BCDEFGHIJK'),(1,1,1,'CDEFGHIJKL'); -LOCK TABLES t1 WRITE; -begin; ---error ER_DUP_ENTRY -insert into t1 values (99,1,2,'D'),(1,1,2,'D'); -select id from t1; -insert ignore into t1 values (100,1,2,'D'),(1,1,99,'D'); -commit; -select id,id3 from t1; -UNLOCK TABLES; -DROP TABLE t1; - -# -# Test prefix key -# -create table t1 (a char(20), unique (a(5))) engine=innodb; -drop table t1; -create table t1 (a char(20), index (a(5))) engine=innodb; -show create table t1; -drop table t1; - -# -# Test using temporary table and auto_increment -# - -create temporary table t1 (a int not null auto_increment, primary key(a)) engine=innodb; -insert into t1 values (NULL),(NULL),(NULL); -delete from t1 where a=3; -insert into t1 values (NULL); -select * from t1; -alter table t1 add b int; -select * from t1; -drop table t1; - -#Slashdot bug -create table t1 - ( - id int auto_increment primary key, - name varchar(32) not null, - value text not null, - uid int not null, - unique key(name,uid) - ) engine=innodb; -insert into t1 values (1,'one','one value',101), - (2,'two','two value',102),(3,'three','three value',103); -set insert_id=5; -replace into t1 (value,name,uid) values ('other value','two',102); -delete from t1 where uid=102; -set insert_id=5; -replace into t1 (value,name,uid) values ('other value','two',102); -set insert_id=6; -replace into t1 (value,name,uid) values ('other value','two',102); -select * from t1; -drop table t1; - -# -# Test DROP DATABASE -# - -create database mysqltest; -create table mysqltest.t1 (a int not null) engine= innodb; -insert into mysqltest.t1 values(1); -create table mysqltest.t2 (a int not null) engine= myisam; -insert into mysqltest.t2 values(1); -create table mysqltest.t3 (a int not null) engine= heap; -insert into mysqltest.t3 values(1); -commit; -drop database mysqltest; -# Don't check error message ---error 1049 -show tables from mysqltest; - -# -# Test truncate table with and without auto_commit -# - -set autocommit=0; -create table t1 (a int not null) engine= innodb; -insert into t1 values(1),(2); -truncate table t1; -commit; -truncate table t1; -truncate table t1; -select * from t1; -insert into t1 values(1),(2); -delete from t1; -select * from t1; -commit; -drop table t1; -set autocommit=1; - -create table t1 (a int not null) engine= innodb; -insert into t1 values(1),(2); -truncate table t1; -insert into t1 values(1),(2); -select * from t1; -truncate table t1; -insert into t1 values(1),(2); -delete from t1; -select * from t1; -drop table t1; - -# -# Test of how ORDER BY works when doing it on the whole table -# - -create table t1 (a int not null, b int not null, c int not null, primary key (a),key(b)) engine=innodb; -insert into t1 values (3,3,3),(1,1,1),(2,2,2),(4,4,4); ---replace_column 9 # -explain select * from t1 order by a; ---replace_column 9 # -explain select * from t1 order by b; ---replace_column 9 # -explain select * from t1 order by c; ---replace_column 9 # -explain select a from t1 order by a; ---replace_column 9 # -explain select b from t1 order by b; ---replace_column 9 # -explain select a,b from t1 order by b; ---replace_column 9 # -explain select a,b from t1; ---replace_column 9 # -explain select a,b,c from t1; -drop table t1; - -# -# Check describe -# - -create table t1 (t int not null default 1, key (t)) engine=innodb; -desc t1; -drop table t1; - -# -# Test of multi-table-delete -# - -CREATE TABLE t1 ( - number bigint(20) NOT NULL default '0', - cname char(15) NOT NULL default '', - carrier_id smallint(6) NOT NULL default '0', - privacy tinyint(4) NOT NULL default '0', - last_mod_date timestamp NOT NULL, - last_mod_id smallint(6) NOT NULL default '0', - last_app_date timestamp NOT NULL, - last_app_id smallint(6) default '-1', - version smallint(6) NOT NULL default '0', - assigned_scps int(11) default '0', - status tinyint(4) default '0' -) ENGINE=InnoDB; -INSERT INTO t1 VALUES (4077711111,'SeanWheeler',90,2,20020111112846,500,00000000000000,-1,2,3,1); -INSERT INTO t1 VALUES (9197722223,'berry',90,3,20020111112809,500,20020102114532,501,4,10,0); -INSERT INTO t1 VALUES (650,'San Francisco',0,0,20011227111336,342,00000000000000,-1,1,24,1); -INSERT INTO t1 VALUES (302467,'Sue\'s Subshop',90,3,20020109113241,500,20020102115111,501,7,24,0); -INSERT INTO t1 VALUES (6014911113,'SudzCarwash',520,1,20020102115234,500,20020102115259,501,33,32768,0); -INSERT INTO t1 VALUES (333,'tubs',99,2,20020109113440,501,20020109113440,500,3,10,0); -CREATE TABLE t2 ( - number bigint(20) NOT NULL default '0', - cname char(15) NOT NULL default '', - carrier_id smallint(6) NOT NULL default '0', - privacy tinyint(4) NOT NULL default '0', - last_mod_date timestamp NOT NULL, - last_mod_id smallint(6) NOT NULL default '0', - last_app_date timestamp NOT NULL, - last_app_id smallint(6) default '-1', - version smallint(6) NOT NULL default '0', - assigned_scps int(11) default '0', - status tinyint(4) default '0' -) ENGINE=InnoDB; -INSERT INTO t2 VALUES (4077711111,'SeanWheeler',0,2,20020111112853,500,00000000000000,-1,2,3,1); -INSERT INTO t2 VALUES (9197722223,'berry',90,3,20020111112818,500,20020102114532,501,4,10,0); -INSERT INTO t2 VALUES (650,'San Francisco',90,0,20020109113158,342,00000000000000,-1,1,24,1); -INSERT INTO t2 VALUES (333,'tubs',99,2,20020109113453,501,20020109113453,500,3,10,0); -select * from t1; -select * from t2; -delete t1, t2 from t1 left join t2 on t1.number=t2.number where (t1.carrier_id=90 and t1.number=t2.number) or (t2.carrier_id=90 and t1.number=t2.number) or (t1.carrier_id=90 and t2.number is null); -select * from t1; -select * from t2; -select * from t2; -drop table t1,t2; - -# -# A simple test with some isolation levels -# TODO: Make this into a test using replication to really test how -# this works. -# - -create table t1 (id int unsigned not null auto_increment, code tinyint unsigned not null, name char(20) not null, primary key (id), key (code), unique (name)) engine=innodb; - -BEGIN; -SET SESSION TRANSACTION ISOLATION LEVEL SERIALIZABLE; -SELECT @@tx_isolation,@@global.tx_isolation; -insert into t1 (code, name) values (1, 'Tim'), (1, 'Monty'), (2, 'David'); -select id, code, name from t1 order by id; -COMMIT; - -BEGIN; -SET SESSION TRANSACTION ISOLATION LEVEL REPEATABLE READ; -insert into t1 (code, name) values (2, 'Erik'), (3, 'Sasha'); -select id, code, name from t1 order by id; -COMMIT; - -SET binlog_format='MIXED'; -BEGIN; -SET SESSION TRANSACTION ISOLATION LEVEL READ UNCOMMITTED; -insert into t1 (code, name) values (3, 'Jeremy'), (4, 'Matt'); -select id, code, name from t1 order by id; -COMMIT; -DROP TABLE t1; - -# -# Test of multi-table-update -# -create table t1 (n int(10), d int(10)) engine=innodb; -create table t2 (n int(10), d int(10)) engine=innodb; -insert into t1 values(1,1),(1,2); -insert into t2 values(1,10),(2,20); -UPDATE t1,t2 SET t1.d=t2.d,t2.d=30 WHERE t1.n=t2.n; -select * from t1; -select * from t2; -drop table t1,t2; - -# -# Bug #29136 erred multi-delete on trans table does not rollback -# - -# prepare ---disable_warnings -drop table if exists t1, t2; ---enable_warnings -CREATE TABLE t1 (a int, PRIMARY KEY (a)); -CREATE TABLE t2 (a int, PRIMARY KEY (a)) ENGINE=InnoDB; -create trigger trg_del_t2 after delete on t2 for each row - insert into t1 values (1); -insert into t1 values (1); -insert into t2 values (1),(2); - - -# exec cases A, B - see multi_update.test - -# A. send_error() w/o send_eof() branch - ---error ER_DUP_ENTRY -delete t2 from t2; - -# check - -select count(*) from t2 /* must be 2 as restored after rollback caused by the error */; - -# cleanup bug#29136 - -drop table t1, t2; - - -# -# Bug #29136 erred multi-delete on trans table does not rollback -# - -# prepare ---disable_warnings -drop table if exists t1, t2; ---enable_warnings -CREATE TABLE t1 (a int, PRIMARY KEY (a)); -CREATE TABLE t2 (a int, PRIMARY KEY (a)) ENGINE=InnoDB; -create trigger trg_del_t2 after delete on t2 for each row - insert into t1 values (1); -insert into t1 values (1); -insert into t2 values (1),(2); - - -# exec cases A, B - see multi_update.test - -# A. send_error() w/o send_eof() branch - ---error ER_DUP_ENTRY -delete t2 from t2; - -# check - -select count(*) from t2 /* must be 2 as restored after rollback caused by the error */; - -# cleanup bug#29136 - -drop table t1, t2; - - -# -# Testing of IFNULL -# -create table t1 (a int, b int) engine=innodb; -insert into t1 values(20,null); -select t2.b, ifnull(t2.b,"this is null") from t1 as t2 left join t1 as t3 on -t2.b=t3.a; -select t2.b, ifnull(t2.b,"this is null") from t1 as t2 left join t1 as t3 on -t2.b=t3.a order by 1; -insert into t1 values(10,null); -select t2.b, ifnull(t2.b,"this is null") from t1 as t2 left join t1 as t3 on -t2.b=t3.a order by 1; -drop table t1; - -# -# Test of read_through not existing const_table -# - -create table t1 (a varchar(10) not null) engine=myisam; -create table t2 (b varchar(10) not null unique) engine=innodb; -select t1.a from t1,t2 where t1.a=t2.b; -drop table t1,t2; -create table t1 (a int not null, b int, primary key (a)) engine = innodb; -create table t2 (a int not null, b int, primary key (a)) engine = innodb; -insert into t1 values (10, 20); -insert into t2 values (10, 20); -update t1, t2 set t1.b = 150, t2.b = t1.b where t2.a = t1.a and t1.a = 10; -drop table t1,t2; - -# -# Test of multi-table-delete with foreign key constraints -# - -CREATE TABLE t1 (id INT NOT NULL, PRIMARY KEY (id)) ENGINE=INNODB; -CREATE TABLE t2 (id INT PRIMARY KEY, t1_id INT, INDEX par_ind (t1_id), FOREIGN KEY (t1_id) REFERENCES t1(id) ON DELETE CASCADE ) ENGINE=INNODB; -insert into t1 set id=1; -insert into t2 set id=1, t1_id=1; -delete t1,t2 from t1,t2 where t1.id=t2.t1_id; -select * from t1; -select * from t2; -drop table t2,t1; -CREATE TABLE t1(id INT NOT NULL, PRIMARY KEY (id)) ENGINE=INNODB; -CREATE TABLE t2(id INT PRIMARY KEY, t1_id INT, INDEX par_ind (t1_id) ) ENGINE=INNODB; -INSERT INTO t1 VALUES(1); -INSERT INTO t2 VALUES(1, 1); -SELECT * from t1; -UPDATE t1,t2 SET t1.id=t1.id+1, t2.t1_id=t1.id+1; -SELECT * from t1; -UPDATE t1,t2 SET t1.id=t1.id+1 where t1.id!=t2.id; -SELECT * from t1; -DROP TABLE t1,t2; - -# -# Test of range_optimizer -# - -set autocommit=0; - -CREATE TABLE t1 (id CHAR(15) NOT NULL, value CHAR(40) NOT NULL, PRIMARY KEY(id)) ENGINE=InnoDB; - -CREATE TABLE t2 (id CHAR(15) NOT NULL, value CHAR(40) NOT NULL, PRIMARY KEY(id)) ENGINE=InnoDB; - -CREATE TABLE t3 (id1 CHAR(15) NOT NULL, id2 CHAR(15) NOT NULL, PRIMARY KEY(id1, id2)) ENGINE=InnoDB; - -INSERT INTO t3 VALUES("my-test-1", "my-test-2"); -COMMIT; - -INSERT INTO t1 VALUES("this-key", "will disappear"); -INSERT INTO t2 VALUES("this-key", "will also disappear"); -DELETE FROM t3 WHERE id1="my-test-1"; - -SELECT * FROM t1; -SELECT * FROM t2; -SELECT * FROM t3; -ROLLBACK; - -SELECT * FROM t1; -SELECT * FROM t2; -SELECT * FROM t3; -SELECT * FROM t3 WHERE id1="my-test-1" LOCK IN SHARE MODE; -COMMIT; -set autocommit=1; -DROP TABLE t1,t2,t3; - -# -# Check update with conflicting key -# - -CREATE TABLE t1 (a int not null primary key, b int not null, unique (b)) engine=innodb; -INSERT INTO t1 values (1,1),(2,2),(3,3),(4,4),(5,5),(6,6),(7,7),(8,8),(9,9); -# We need the a < 1000 test here to quard against the halloween problems -UPDATE t1 set a=a+100 where b between 2 and 3 and a < 1000; -SELECT * from t1; -drop table t1; - -# -# Test multi update with different join methods -# - -CREATE TABLE t1 (a int not null primary key, b int not null, key (b)) engine=innodb; -CREATE TABLE t2 (a int not null primary key, b int not null, key (b)) engine=innodb; -INSERT INTO t1 values (1,1),(2,2),(3,3),(4,4),(5,5),(6,6),(7,7),(8,8),(9,9),(10,10),(11,11),(12,12); -INSERT INTO t2 values (1,1),(2,2),(3,3),(4,4),(5,5),(6,6),(7,7),(8,8),(9,9); - -# Full join, without key -update t1,t2 set t1.a=t1.a+100; -select * from t1; - -# unique key -update t1,t2 set t1.a=t1.a+100 where t1.a=101; -select * from t1; - -# ref key -update t1,t2 set t1.b=t1.b+10 where t1.b=2; -select * from t1; - -# Range key (in t1) -update t1,t2 set t1.b=t1.b+2,t2.b=t1.b+10 where t1.b between 3 and 5 and t1.a=t2.a+100; -select * from t1; -select * from t2; - -drop table t1,t2; -CREATE TABLE t2 ( NEXT_T BIGINT NOT NULL PRIMARY KEY) ENGINE=MyISAM; -CREATE TABLE t1 ( B_ID INTEGER NOT NULL PRIMARY KEY) ENGINE=InnoDB; -SET AUTOCOMMIT=0; -INSERT INTO t1 ( B_ID ) VALUES ( 1 ); -INSERT INTO t2 ( NEXT_T ) VALUES ( 1 ); -ROLLBACK; -SELECT * FROM t1; -drop table t1,t2; -create table t1 ( pk int primary key, parent int not null, child int not null, index (parent) ) engine = innodb; -insert into t1 values (1,0,4), (2,1,3), (3,2,1), (4,1,2); -select distinct parent,child from t1 order by parent; -drop table t1; - -# -# Test that MySQL priorities clustered indexes -# -create table t1 (a int not null auto_increment primary key, b int, c int, key(c)) engine=innodb; -create table t2 (a int not null auto_increment primary key, b int); -insert into t1 (b) values (null),(null),(null),(null),(null),(null),(null); -insert into t2 (a) select b from t1; -insert into t1 (b) select b from t2; -insert into t2 (a) select b from t1; -insert into t1 (a) select b from t2; -insert into t2 (a) select b from t1; -insert into t1 (a) select b from t2; -insert into t2 (a) select b from t1; -insert into t1 (a) select b from t2; -insert into t2 (a) select b from t1; -insert into t1 (a) select b from t2; -select count(*) from t1; ---replace_column 9 # -explain select * from t1 where c between 1 and 2500; -update t1 set c=a; ---replace_column 9 # -explain select * from t1 where c between 1 and 2500; -drop table t1,t2; - -# -# Test of UPDATE ... ORDER BY -# - -create table t1 (id int primary key auto_increment, fk int, index index_fk (fk)) engine=innodb; - -insert into t1 (id) values (null),(null),(null),(null),(null); -update t1 set fk=69 where fk is null order by id limit 1; -SELECT * from t1; -drop table t1; - -create table t1 (a int not null, b int not null, key (a)); -insert into t1 values (1,1),(1,2),(1,3),(3,1),(3,2),(3,3),(3,1),(3,2),(3,3),(2,1),(2,2),(2,3); -SET @tmp=0; -update t1 set b=(@tmp:=@tmp+1) order by a; -update t1 set b=99 where a=1 order by b asc limit 1; -update t1 set b=100 where a=1 order by b desc limit 2; -update t1 set a=a+10+b where a=1 order by b; -select * from t1 order by a,b; -drop table t1; - -# -# Test of multi-table-updates (bug #1980). -# - -create table t1 ( c char(8) not null ) engine=innodb; -insert into t1 values ('0'),('1'),('2'),('3'),('4'),('5'),('6'),('7'),('8'),('9'); -insert into t1 values ('A'),('B'),('C'),('D'),('E'),('F'); - -alter table t1 add b char(8) not null; -alter table t1 add a char(8) not null; -alter table t1 add primary key (a,b,c); -update t1 set a=c, b=c; - -create table t2 (c char(8) not null, b char(8) not null, a char(8) not null, primary key(a,b,c)) engine=innodb; -insert into t2 select * from t1; - -delete t1,t2 from t2,t1 where t1.a<'B' and t2.b=t1.b; -drop table t1,t2; - -# -# test autoincrement with TRUNCATE -# - -SET AUTOCOMMIT=1; -create table t1 (a integer auto_increment primary key) engine=innodb; -insert into t1 (a) values (NULL),(NULL); -truncate table t1; -insert into t1 (a) values (NULL),(NULL); -SELECT * from t1; -drop table t1; - -# -# Test dictionary handling with spaceand quoting -# - -CREATE TABLE t1 (`id 1` INT NOT NULL, PRIMARY KEY (`id 1`)) ENGINE=INNODB; -CREATE TABLE t2 (id INT PRIMARY KEY, t1_id INT, INDEX par_ind (t1_id), FOREIGN KEY (`t1_id`) REFERENCES `t1`(`id 1`) ON DELETE CASCADE ) ENGINE=INNODB; -#show create table t2; -drop table t2,t1; - -# -# Test of multi updated and foreign keys -# - -create table `t1` (`id` int( 11 ) not null ,primary key ( `id` )) engine = innodb; -insert into `t1`values ( 1 ) ; -create table `t2` (`id` int( 11 ) not null default '0',unique key `id` ( `id` ) ,constraint `t1_id_fk` foreign key ( `id` ) references `t1` (`id` )) engine = innodb; -insert into `t2`values ( 1 ) ; -create table `t3` (`id` int( 11 ) not null default '0',key `id` ( `id` ) ,constraint `t2_id_fk` foreign key ( `id` ) references `t2` (`id` )) engine = innodb; -insert into `t3`values ( 1 ) ; ---error 1451 -delete t3,t2,t1 from t1,t2,t3 where t1.id =1 and t2.id = t1.id and t3.id = t2.id; ---error 1451 -update t1,t2,t3 set t3.id=5, t2.id=6, t1.id=7 where t1.id =1 and t2.id = t1.id and t3.id = t2.id; ---error 1054 -update t3 set t3.id=7 where t1.id =1 and t2.id = t1.id and t3.id = t2.id; -drop table t3,t2,t1; - -# -# test for recursion depth limit -# -create table t1( - id int primary key, - pid int, - index(pid), - foreign key(pid) references t1(id) on delete cascade) engine=innodb; -insert into t1 values(0,0),(1,0),(2,1),(3,2),(4,3),(5,4),(6,5),(7,6), - (8,7),(9,8),(10,9),(11,10),(12,11),(13,12),(14,13),(15,14); --- error 1451 -delete from t1 where id=0; -delete from t1 where id=15; -delete from t1 where id=0; - -drop table t1; - -# -# Test timestamps -# - -CREATE TABLE t1 (col1 int(1))ENGINE=InnoDB; -CREATE TABLE t2 (col1 int(1),stamp TIMESTAMP,INDEX stamp_idx -(stamp))ENGINE=InnoDB; -insert into t1 values (1),(2),(3); -# Note that timestamp 3 is wrong -insert into t2 values (1, 20020204130000),(2, 20020204130000),(4,20020204310000 ),(5,20020204230000); -SELECT col1 FROM t1 UNION SELECT col1 FROM t2 WHERE stamp < -'20020204120000' GROUP BY col1; -drop table t1,t2; - -# -# Test by Francois MASUREL -# - -CREATE TABLE t1 ( - `id` int(10) unsigned NOT NULL auto_increment, - `id_object` int(10) unsigned default '0', - `id_version` int(10) unsigned NOT NULL default '1', - `label` varchar(100) NOT NULL default '', - `description` text, - PRIMARY KEY (`id`), - KEY `id_object` (`id_object`), - KEY `id_version` (`id_version`) -) ENGINE=InnoDB; - -INSERT INTO t1 VALUES("6", "3382", "9", "Test", NULL), ("7", "102", "5", "Le Pekin (Test)", NULL),("584", "1794", "4", "Test de resto", NULL),("837", "1822", "6", "Test 3", NULL),("1119", "3524", "1", "Societe Test", NULL),("1122", "3525", "1", "Fournisseur Test", NULL); - -CREATE TABLE t2 ( - `id` int(10) unsigned NOT NULL auto_increment, - `id_version` int(10) unsigned NOT NULL default '1', - PRIMARY KEY (`id`), - KEY `id_version` (`id_version`) -) ENGINE=InnoDB; - -INSERT INTO t2 VALUES("3524", "1"),("3525", "1"),("1794", "4"),("102", "5"),("1822", "6"),("3382", "9"); - -SELECT t2.id, t1.`label` FROM t2 INNER JOIN -(SELECT t1.id_object as id_object FROM t1 WHERE t1.`label` LIKE '%test%') AS lbl -ON (t2.id = lbl.id_object) INNER JOIN t1 ON (t2.id = t1.id_object); -drop table t1,t2; - -create table t1 (a int, b varchar(200), c text not null) checksum=1 engine=myisam; -create table t2 (a int, b varchar(200), c text not null) checksum=0 engine=innodb; -create table t3 (a int, b varchar(200), c text not null) checksum=1 engine=innodb; -insert t1 values (1, "aaa", "bbb"), (NULL, "", "ccccc"), (0, NULL, ""); -insert t2 select * from t1; -insert t3 select * from t1; -checksum table t1, t2, t3, t4 quick; -checksum table t1, t2, t3, t4; -checksum table t1, t2, t3, t4 extended; -#show table status; -drop table t1,t2,t3; - -# -# Test problem with refering to different fields in same table in UNION -# (Bug #2552) -# -create table t1 (id int, name char(10) not null, name2 char(10) not null) engine=innodb; -insert into t1 values(1,'first','fff'),(2,'second','sss'),(3,'third','ttt'); -select trim(name2) from t1 union all select trim(name) from t1 union all select trim(id) from t1; -drop table t1; - -# -# Bug2160 -# -create table t1 (a int) engine=innodb; -create table t2 like t1; -drop table t1,t2; - -# -# Test of automaticly created foreign keys -# - -create table t1 (id int(11) not null, id2 int(11) not null, unique (id,id2)) engine=innodb; -create table t2 (id int(11) not null, constraint t1_id_fk foreign key ( id ) references t1 (id)) engine = innodb; -show create table t1; -show create table t2; -create index id on t2 (id); -show create table t2; -create index id2 on t2 (id); -show create table t2; -drop index id2 on t2; ---error 1025,1025 -drop index id on t2; -show create table t2; -drop table t2; - -create table t2 (id int(11) not null, id2 int(11) not null, constraint t1_id_fk foreign key (id,id2) references t1 (id,id2)) engine = innodb; -show create table t2; -create unique index id on t2 (id,id2); -show create table t2; -drop table t2; - -# Check foreign key columns created in different order than key columns -create table t2 (id int(11) not null, id2 int(11) not null, unique (id,id2),constraint t1_id_fk foreign key (id2,id) references t1 (id,id2)) engine = innodb; -show create table t2; -drop table t2; - -create table t2 (id int(11) not null, id2 int(11) not null, unique (id,id2), constraint t1_id_fk foreign key (id) references t1 (id)) engine = innodb; -show create table t2; -drop table t2; - -create table t2 (id int(11) not null, id2 int(11) not null, unique (id,id2),constraint t1_id_fk foreign key (id2,id) references t1 (id,id2)) engine = innodb; -show create table t2; -drop table t2; - -create table t2 (id int(11) not null auto_increment, id2 int(11) not null, constraint t1_id_fk foreign key (id) references t1 (id), primary key (id), index (id,id2)) engine = innodb; -show create table t2; -drop table t2; - -create table t2 (id int(11) not null auto_increment, id2 int(11) not null, constraint t1_id_fk foreign key (id) references t1 (id)) engine= innodb; -show create table t2; -alter table t2 add index id_test (id), add index id_test2 (id,id2); -show create table t2; -drop table t2; - -# Test error handling - -# Embedded server doesn't chdir to data directory ---replace_result $MYSQLTEST_VARDIR . mysqld.1/data/ '' ---error ER_WRONG_FK_DEF -create table t2 (id int(11) not null, id2 int(11) not null, constraint t1_id_fk foreign key (id2,id) references t1 (id)) engine = innodb; - -# bug#3749 - -create table t2 (a int auto_increment primary key, b int, index(b), foreign key (b) references t1(id), unique(b)) engine=innodb; -show create table t2; -drop table t2; -create table t2 (a int auto_increment primary key, b int, foreign key (b) references t1(id), foreign key (b) references t1(id), unique(b)) engine=innodb; -show create table t2; -drop table t2, t1; - - -# -# Bug #6126: Duplicate columns in keys gives misleading error message -# ---error 1060 -create table t1 (c char(10), index (c,c)) engine=innodb; ---error 1060 -create table t1 (c1 char(10), c2 char(10), index (c1,c2,c1)) engine=innodb; ---error 1060 -create table t1 (c1 char(10), c2 char(10), index (c1,c1,c2)) engine=innodb; ---error 1060 -create table t1 (c1 char(10), c2 char(10), index (c2,c1,c1)) engine=innodb; -create table t1 (c1 char(10), c2 char(10)) engine=innodb; ---error 1060 -alter table t1 add key (c1,c1); ---error 1060 -alter table t1 add key (c2,c1,c1); ---error 1060 -alter table t1 add key (c1,c2,c1); ---error 1060 -alter table t1 add key (c1,c1,c2); -drop table t1; - -# -# Bug #4082: integer truncation -# - -create table t1(a int(1) , b int(1)) engine=innodb; -insert into t1 values ('1111', '3333'); -select distinct concat(a, b) from t1; -drop table t1; - -# -# BUG#7709 test case - Boolean fulltext query against unsupported -# engines does not fail -# - -CREATE TABLE t1 ( a char(10) ) ENGINE=InnoDB; ---error 1214 -SELECT a FROM t1 WHERE MATCH (a) AGAINST ('test' IN BOOLEAN MODE); -DROP TABLE t1; - -# -# check null values #1 -# - ---disable_warnings -CREATE TABLE t1 (a_id tinyint(4) NOT NULL default '0', PRIMARY KEY (a_id)) ENGINE=InnoDB DEFAULT CHARSET=latin1; -INSERT INTO t1 VALUES (1),(2),(3); -CREATE TABLE t2 (b_id tinyint(4) NOT NULL default '0',b_a tinyint(4) NOT NULL default '0', PRIMARY KEY (b_id), KEY (b_a), - CONSTRAINT fk_b_a FOREIGN KEY (b_a) REFERENCES t1 (a_id) ON DELETE CASCADE ON UPDATE NO ACTION) ENGINE=InnoDB DEFAULT CHARSET=latin1; ---enable_warnings -INSERT INTO t2 VALUES (1,1),(2,1),(3,1),(4,2),(5,2); -SELECT * FROM (SELECT t1.*,GROUP_CONCAT(t2.b_id SEPARATOR ',') as b_list FROM (t1 LEFT JOIN (t2) on t1.a_id = t2.b_a) GROUP BY t1.a_id ) AS xyz; -DROP TABLE t2; -DROP TABLE t1; - -# -# Bug#11816 - Truncate table doesn't work with temporary innodb tables -# This is not an innodb bug, but we test it using innodb. -# -create temporary table t1 (a int) engine=innodb; -insert into t1 values (4711); -truncate t1; -insert into t1 values (42); -select * from t1; -drop table t1; -# Show that it works with permanent tables too. -create table t1 (a int) engine=innodb; -insert into t1 values (4711); -truncate t1; -insert into t1 values (42); -select * from t1; -drop table t1; - -# -# Bug #13025 Server crash during filesort -# - -create table t1 (a int not null, b int not null, c blob not null, d int not null, e int, primary key (a,b,c(255),d)) engine=innodb; -insert into t1 values (2,2,"b",2,2),(1,1,"a",1,1),(3,3,"ab",3,3); -select * from t1 order by a,b,c,d; -explain select * from t1 order by a,b,c,d; -drop table t1; - -# -# BUG#11039,#13218 Wrong key length in min() -# - -create table t1 (a char(1), b char(1), key(a, b)) engine=innodb; -insert into t1 values ('8', '6'), ('4', '7'); -select min(a) from t1; -select min(b) from t1 where a='8'; -drop table t1; - -# End of 4.1 tests - -# -# range optimizer problem -# - -create table t1 (x bigint unsigned not null primary key) engine=innodb; -insert into t1(x) values (0xfffffffffffffff0),(0xfffffffffffffff1); -select * from t1; -select count(*) from t1 where x>0; -select count(*) from t1 where x=0; -select count(*) from t1 where x<0; -select count(*) from t1 where x < -16; -select count(*) from t1 where x = -16; -explain select count(*) from t1 where x > -16; -select count(*) from t1 where x > -16; -select * from t1 where x > -16; -select count(*) from t1 where x = 18446744073709551601; -drop table t1; - - -# Test for testable InnoDB status variables. This test -# uses previous ones(pages_created, rows_deleted, ...). -show status like "Innodb_buffer_pool_pages_total"; -show status like "Innodb_page_size"; -show status like "Innodb_rows_deleted"; -show status like "Innodb_rows_inserted"; -show status like "Innodb_rows_updated"; - -# Test for row locks InnoDB status variables. -show status like "Innodb_row_lock_waits"; -show status like "Innodb_row_lock_current_waits"; -show status like "Innodb_row_lock_time"; -show status like "Innodb_row_lock_time_max"; -show status like "Innodb_row_lock_time_avg"; - -# Test for innodb_sync_spin_loops variable -show variables like "innodb_sync_spin_loops"; -set global innodb_sync_spin_loops=1000; -show variables like "innodb_sync_spin_loops"; -set global innodb_sync_spin_loops=0; -show variables like "innodb_sync_spin_loops"; -set global innodb_sync_spin_loops=20; -show variables like "innodb_sync_spin_loops"; - -# Test for innodb_thread_concurrency variable -SET @old_innodb_thread_concurrency= @@global.innodb_thread_concurrency; -show variables like "innodb_thread_concurrency"; -set global innodb_thread_concurrency=1001; -show variables like "innodb_thread_concurrency"; -set global innodb_thread_concurrency=0; -show variables like "innodb_thread_concurrency"; -set global innodb_thread_concurrency=16; -show variables like "innodb_thread_concurrency"; -SET @@global.innodb_thread_concurrency= @old_innodb_thread_concurrency; - -# Test for innodb_concurrency_tickets variable -show variables like "innodb_concurrency_tickets"; -set global innodb_concurrency_tickets=1000; -show variables like "innodb_concurrency_tickets"; -set global innodb_concurrency_tickets=0; -show variables like "innodb_concurrency_tickets"; -set global innodb_concurrency_tickets=500; -show variables like "innodb_concurrency_tickets"; - -# Test for innodb_thread_sleep_delay variable -show variables like "innodb_thread_sleep_delay"; -set global innodb_thread_sleep_delay=100000; -show variables like "innodb_thread_sleep_delay"; -set global innodb_thread_sleep_delay=0; -show variables like "innodb_thread_sleep_delay"; -set global innodb_thread_sleep_delay=10000; -show variables like "innodb_thread_sleep_delay"; - -# -# Test varchar -# - -let $default=`select @@storage_engine`; -set storage_engine=INNODB; -source include/varchar.inc; - -# -# Some errors/warnings on create -# - -# Embedded server doesn't chdir to data directory ---replace_result $MYSQLTEST_VARDIR . mysqld.1/data/ '' -create table t1 (v varchar(65530), key(v)); -drop table t1; -create table t1 (v varchar(65536)); -show create table t1; -drop table t1; -create table t1 (v varchar(65530) character set utf8); -show create table t1; -drop table t1; - -eval set storage_engine=$default; - -# InnoDB specific varchar tests -create table t1 (v varchar(16384)) engine=innodb; -drop table t1; - -# -# BUG#11039 Wrong key length in min() -# - -create table t1 (a char(1), b char(1), key(a, b)) engine=innodb; -insert into t1 values ('8', '6'), ('4', '7'); -select min(a) from t1; -select min(b) from t1 where a='8'; -drop table t1; - -# -# Bug #11080 & #11005 Multi-row REPLACE fails on a duplicate key error -# - -CREATE TABLE t1 ( `a` int(11) NOT NULL auto_increment, `b` int(11) default NULL,PRIMARY KEY (`a`),UNIQUE KEY `b` (`b`)) ENGINE=innodb; -insert into t1 (b) values (1); -replace into t1 (b) values (2), (1), (3); -select * from t1; -truncate table t1; -insert into t1 (b) values (1); -replace into t1 (b) values (2); -replace into t1 (b) values (1); -replace into t1 (b) values (3); -select * from t1; -drop table t1; - -create table t1 (rowid int not null auto_increment, val int not null,primary -key (rowid), unique(val)) engine=innodb; -replace into t1 (val) values ('1'),('2'); -replace into t1 (val) values ('1'),('2'); ---error ER_DUP_ENTRY -insert into t1 (val) values ('1'),('2'); -select * from t1; -drop table t1; - -# -# Test that update does not change internal auto-increment value -# - -create table t1 (a int not null auto_increment primary key, val int) engine=InnoDB; -insert into t1 (val) values (1); -update t1 set a=2 where a=1; -# We should get the following error because InnoDB does not update the counter ---error ER_DUP_ENTRY -insert into t1 (val) values (1); -select * from t1; -drop table t1; -# -# Bug #10465 -# - ---disable_warnings -CREATE TABLE t1 (GRADE DECIMAL(4) NOT NULL, PRIMARY KEY (GRADE)) ENGINE=INNODB; ---enable_warnings -INSERT INTO t1 (GRADE) VALUES (151),(252),(343); -SELECT GRADE FROM t1 WHERE GRADE > 160 AND GRADE < 300; -SELECT GRADE FROM t1 WHERE GRADE= 151; -DROP TABLE t1; - -# -# Bug #12340 multitable delete deletes only one record -# -create table t1 (f1 varchar(10), f2 varchar(10), primary key (f1,f2)) engine=innodb; -create table t2 (f3 varchar(10), f4 varchar(10), key (f4)) engine=innodb; -insert into t2 values ('aa','cc'); -insert into t1 values ('aa','bb'),('aa','cc'); -delete t1 from t1,t2 where f1=f3 and f4='cc'; -select * from t1; -drop table t1,t2; - -# -# Test that the slow TRUNCATE implementation resets autoincrement columns -# (bug #11946) -# - -CREATE TABLE t1 ( -id INTEGER NOT NULL AUTO_INCREMENT, PRIMARY KEY (id) -) ENGINE=InnoDB; - -CREATE TABLE t2 ( -id INTEGER NOT NULL, -FOREIGN KEY (id) REFERENCES t1 (id) -) ENGINE=InnoDB; - -INSERT INTO t1 (id) VALUES (NULL); -SELECT * FROM t1; -TRUNCATE t1; -INSERT INTO t1 (id) VALUES (NULL); -SELECT * FROM t1; - -# continued from above; test that doing a slow TRUNCATE on a table with 0 -# rows resets autoincrement columns -DELETE FROM t1; -TRUNCATE t1; -INSERT INTO t1 (id) VALUES (NULL); -SELECT * FROM t1; -DROP TABLE t2, t1; - -# Test that foreign keys in temporary tables are not accepted (bug #12084) -CREATE TABLE t1 -( - id INT PRIMARY KEY -) ENGINE=InnoDB; - ---error 1005,1005 -CREATE TEMPORARY TABLE t2 -( - id INT NOT NULL PRIMARY KEY, - b INT, - FOREIGN KEY (b) REFERENCES test.t1(id) -) ENGINE=InnoDB; -DROP TABLE t1; - -# -# Test that index column max sizes are honored (bug #13315) -# - -# prefix index -create table t1 (col1 varchar(2000), index (col1(767))) - character set = latin1 engine = innodb; - -# normal indexes -create table t2 (col1 char(255), index (col1)) - character set = latin1 engine = innodb; -create table t3 (col1 binary(255), index (col1)) - character set = latin1 engine = innodb; -create table t4 (col1 varchar(767), index (col1)) - character set = latin1 engine = innodb; -create table t5 (col1 varchar(767) primary key) - character set = latin1 engine = innodb; -create table t6 (col1 varbinary(767) primary key) - character set = latin1 engine = innodb; -create table t7 (col1 text, index(col1(767))) - character set = latin1 engine = innodb; -create table t8 (col1 blob, index(col1(767))) - character set = latin1 engine = innodb; - -# multi-column indexes are allowed to be longer -create table t9 (col1 varchar(512), col2 varchar(512), index(col1, col2)) - character set = latin1 engine = innodb; - -show create table t9; - -drop table t1, t2, t3, t4, t5, t6, t7, t8, t9; - -# these should have their index length trimmed -create table t1 (col1 varchar(768), index(col1)) - character set = latin1 engine = innodb; -create table t2 (col1 varbinary(768), index(col1)) - character set = latin1 engine = innodb; -create table t3 (col1 text, index(col1(768))) - character set = latin1 engine = innodb; -create table t4 (col1 blob, index(col1(768))) - character set = latin1 engine = innodb; - -show create table t1; - -drop table t1, t2, t3, t4; - -# these should be refused ---error 1071 -create table t1 (col1 varchar(768) primary key) - character set = latin1 engine = innodb; ---error 1071 -create table t2 (col1 varbinary(768) primary key) - character set = latin1 engine = innodb; ---error 1071 -create table t3 (col1 text, primary key(col1(768))) - character set = latin1 engine = innodb; ---error 1071 -create table t4 (col1 blob, primary key(col1(768))) - character set = latin1 engine = innodb; - -# -# Test improved foreign key error messages (bug #3443) -# - -CREATE TABLE t1 -( - id INT PRIMARY KEY -) ENGINE=InnoDB; - -CREATE TABLE t2 -( - v INT, - CONSTRAINT c1 FOREIGN KEY (v) REFERENCES t1(id) -) ENGINE=InnoDB; - ---error 1452 -INSERT INTO t2 VALUES(2); - -INSERT INTO t1 VALUES(1); -INSERT INTO t2 VALUES(1); - ---error 1451 -DELETE FROM t1 WHERE id = 1; - ---error 1217 -DROP TABLE t1; - -SET FOREIGN_KEY_CHECKS=0; -DROP TABLE t1; -SET FOREIGN_KEY_CHECKS=1; - ---error 1452 -INSERT INTO t2 VALUES(3); - -DROP TABLE t2; -# -# Test that checksum table uses a consistent read Bug #12669 -# -connect (a,localhost,root,,); -connect (b,localhost,root,,); -connection a; -create table t1(a int not null) engine=innodb DEFAULT CHARSET=latin1; -insert into t1 values (1),(2); -set autocommit=0; -checksum table t1; -connection b; -insert into t1 values(3); -connection a; -# -# Here checksum should not see insert -# -checksum table t1; -connection a; -commit; -checksum table t1; -commit; -drop table t1; -# -# autocommit = 1 -# -connection a; -create table t1(a int not null) engine=innodb DEFAULT CHARSET=latin1; -insert into t1 values (1),(2); -set autocommit=1; -checksum table t1; -connection b; -set autocommit=1; -insert into t1 values(3); -connection a; -# -# Here checksum sees insert -# -checksum table t1; -drop table t1; - -connection default; -disconnect a; -disconnect b; - -# tests for bugs #9802 and #13778 - -# test that FKs between invalid types are not accepted - -set foreign_key_checks=0; -create table t2 (a int primary key, b int, foreign key (b) references t1(a)) engine = innodb; -# Embedded server doesn't chdir to data directory ---replace_result $MYSQLTEST_VARDIR . mysqld.1/data/ '' --- error 1005 -create table t1(a char(10) primary key, b varchar(20)) engine = innodb; -set foreign_key_checks=1; -drop table t2; - -# test that FKs between different charsets are not accepted in CREATE even -# when f_k_c is 0 - -set foreign_key_checks=0; -create table t1(a varchar(10) primary key) engine = innodb DEFAULT CHARSET=latin1; -# Embedded server doesn't chdir to data directory ---replace_result $MYSQLTEST_VARDIR . mysqld.1/data/ '' --- error 1005 -create table t2 (a varchar(10), foreign key (a) references t1(a)) engine = innodb DEFAULT CHARSET=utf8; -set foreign_key_checks=1; -drop table t1; - -# test that invalid datatype conversions with ALTER are not allowed - -set foreign_key_checks=0; -create table t2 (a varchar(10), foreign key (a) references t1(a)) engine = innodb; -create table t1(a varchar(10) primary key) engine = innodb; --- error 1025,1025 -alter table t1 modify column a int; -set foreign_key_checks=1; -drop table t2,t1; - -# test that charset conversions with ALTER are allowed when f_k_c is 0 - -set foreign_key_checks=0; -create table t2 (a varchar(10), foreign key (a) references t1(a)) engine = innodb DEFAULT CHARSET=latin1; -create table t1(a varchar(10) primary key) engine = innodb DEFAULT CHARSET=latin1; -alter table t1 convert to character set utf8; -set foreign_key_checks=1; -drop table t2,t1; - -# test that RENAME does not allow invalid charsets when f_k_c is 0 - -set foreign_key_checks=0; -create table t2 (a varchar(10), foreign key (a) references t1(a)) engine = innodb DEFAULT CHARSET=latin1; -create table t3(a varchar(10) primary key) engine = innodb DEFAULT CHARSET=utf8; -# Embedded server doesn't chdir to data directory ---replace_result $MYSQLTEST_VARDIR . mysqld.1/data/ '' --- error 1025 -rename table t3 to t1; -set foreign_key_checks=1; -drop table t2,t3; - -# test that foreign key errors are reported correctly (Bug #15550) - -create table t1(a int primary key) row_format=redundant engine=innodb; -create table t2(a int primary key,constraint foreign key(a)references t1(a)) row_format=compact engine=innodb; -create table t3(a int primary key) row_format=compact engine=innodb; -create table t4(a int primary key,constraint foreign key(a)references t3(a)) row_format=redundant engine=innodb; - -insert into t1 values(1); -insert into t3 values(1); --- error 1452 -insert into t2 values(2); --- error 1452 -insert into t4 values(2); -insert into t2 values(1); -insert into t4 values(1); --- error 1451 -update t1 set a=2; --- error 1452 -update t2 set a=2; --- error 1451 -update t3 set a=2; --- error 1452 -update t4 set a=2; --- error 1451 -truncate t1; --- error 1451 -truncate t3; -truncate t2; -truncate t4; -truncate t1; -truncate t3; - -drop table t4,t3,t2,t1; - - -# -# Test that we can create a large (>1K) key -# -create table t1 (a varchar(255) character set utf8, - b varchar(255) character set utf8, - c varchar(255) character set utf8, - d varchar(255) character set utf8, - key (a,b,c,d)) engine=innodb; -drop table t1; ---error ER_TOO_LONG_KEY -create table t1 (a varchar(255) character set utf8, - b varchar(255) character set utf8, - c varchar(255) character set utf8, - d varchar(255) character set utf8, - e varchar(255) character set utf8, - key (a,b,c,d,e)) engine=innodb; - - -# test the padding of BINARY types and collations (Bug #14189) - -create table t1 (s1 varbinary(2),primary key (s1)) engine=innodb; -create table t2 (s1 binary(2),primary key (s1)) engine=innodb; -create table t3 (s1 varchar(2) binary,primary key (s1)) engine=innodb; -create table t4 (s1 char(2) binary,primary key (s1)) engine=innodb; - -insert into t1 values (0x41),(0x4120),(0x4100); --- error ER_DUP_ENTRY -insert into t2 values (0x41),(0x4120),(0x4100); -insert into t2 values (0x41),(0x4120); --- error ER_DUP_ENTRY -insert into t3 values (0x41),(0x4120),(0x4100); -insert into t3 values (0x41),(0x4100); --- error ER_DUP_ENTRY -insert into t4 values (0x41),(0x4120),(0x4100); -insert into t4 values (0x41),(0x4100); -select hex(s1) from t1; -select hex(s1) from t2; -select hex(s1) from t3; -select hex(s1) from t4; -drop table t1,t2,t3,t4; - -create table t1 (a int primary key,s1 varbinary(3) not null unique) engine=innodb; -create table t2 (s1 binary(2) not null, constraint c foreign key(s1) references t1(s1) on update cascade) engine=innodb; - -insert into t1 values(1,0x4100),(2,0x41),(3,0x4120),(4,0x42); --- error 1452 -insert into t2 values(0x42); -insert into t2 values(0x41); -select hex(s1) from t2; -update t1 set s1=0x123456 where a=2; -select hex(s1) from t2; --- error 1451 -update t1 set s1=0x12 where a=1; --- error 1451 -update t1 set s1=0x12345678 where a=1; --- error 1451 -update t1 set s1=0x123457 where a=1; -update t1 set s1=0x1220 where a=1; -select hex(s1) from t2; -update t1 set s1=0x1200 where a=1; -select hex(s1) from t2; -update t1 set s1=0x4200 where a=1; -select hex(s1) from t2; --- error 1451 -delete from t1 where a=1; -delete from t1 where a=2; -update t2 set s1=0x4120; --- error 1451 -delete from t1; -delete from t1 where a!=3; -select a,hex(s1) from t1; -select hex(s1) from t2; - -drop table t2,t1; - -create table t1 (a int primary key,s1 varchar(2) binary not null unique) engine=innodb; -create table t2 (s1 char(2) binary not null, constraint c foreign key(s1) references t1(s1) on update cascade) engine=innodb; - -insert into t1 values(1,0x4100),(2,0x41); -insert into t2 values(0x41); -select hex(s1) from t2; -update t1 set s1=0x1234 where a=1; -select hex(s1) from t2; -update t1 set s1=0x12 where a=2; -select hex(s1) from t2; -delete from t1 where a=1; --- error 1451 -delete from t1 where a=2; -select a,hex(s1) from t1; -select hex(s1) from t2; - -drop table t2,t1; -# Ensure that <tablename>_ibfk_0 is not mistreated as a -# generated foreign key identifier. (Bug #16387) - -CREATE TABLE t1(a INT, PRIMARY KEY(a)) ENGINE=InnoDB; -CREATE TABLE t2(a INT) ENGINE=InnoDB; -ALTER TABLE t2 ADD FOREIGN KEY (a) REFERENCES t1(a); -ALTER TABLE t2 DROP FOREIGN KEY t2_ibfk_1; -ALTER TABLE t2 ADD CONSTRAINT t2_ibfk_0 FOREIGN KEY (a) REFERENCES t1(a); -ALTER TABLE t2 DROP FOREIGN KEY t2_ibfk_0; -SHOW CREATE TABLE t2; -DROP TABLE t2,t1; - -# -# Test case for bug #16229: MySQL/InnoDB uses full explicit table locks in trigger processing -# - -connect (a,localhost,root,,); -connect (b,localhost,root,,); -connection a; -create table t1(a int not null, b int, c int, d int, primary key(a)) engine=innodb; -insert into t1(a) values (1),(2),(3); -commit; -connection b; -set autocommit = 0; -update t1 set b = 5 where a = 2; -connection a; -delimiter |; -create trigger t1t before insert on t1 for each row begin set NEW.b = NEW.a * 10 + 5, NEW.c = NEW.a / 10; end | -delimiter ;| -set autocommit = 0; -connection a; -insert into t1(a) values (10),(20),(30),(40),(50),(60),(70),(80),(90),(100), -(11),(21),(31),(41),(51),(61),(71),(81),(91),(101), -(12),(22),(32),(42),(52),(62),(72),(82),(92),(102), -(13),(23),(33),(43),(53),(63),(73),(83),(93),(103), -(14),(24),(34),(44),(54),(64),(74),(84),(94),(104); -connection b; -commit; -connection a; -commit; -drop trigger t1t; -drop table t1; -disconnect a; -disconnect b; -# -# Another trigger test -# -connect (a,localhost,root,,); -connect (b,localhost,root,,); -connection a; -create table t1(a int not null, b int, c int, d int, primary key(a)) engine=innodb; -create table t2(a int not null, b int, c int, d int, primary key(a)) engine=innodb; -create table t3(a int not null, b int, c int, d int, primary key(a)) engine=innodb; -create table t4(a int not null, b int, c int, d int, primary key(a)) engine=innodb; -create table t5(a int not null, b int, c int, d int, primary key(a)) engine=innodb; -insert into t1(a) values (1),(2),(3); -insert into t2(a) values (1),(2),(3); -insert into t3(a) values (1),(2),(3); -insert into t4(a) values (1),(2),(3); -insert into t3(a) values (5),(7),(8); -insert into t4(a) values (5),(7),(8); -insert into t5(a) values (1),(2),(3),(4),(5),(6),(7),(8),(9),(10),(11),(12); - -delimiter |; -create trigger t1t before insert on t1 for each row begin - INSERT INTO t2 SET a = NEW.a; -end | - -create trigger t2t before insert on t2 for each row begin - DELETE FROM t3 WHERE a = NEW.a; -end | - -create trigger t3t before delete on t3 for each row begin - UPDATE t4 SET b = b + 1 WHERE a = OLD.a; -end | - -create trigger t4t before update on t4 for each row begin - UPDATE t5 SET b = b + 1 where a = NEW.a; -end | -delimiter ;| -commit; -set autocommit = 0; -update t1 set b = b + 5 where a = 1; -update t2 set b = b + 5 where a = 1; -update t3 set b = b + 5 where a = 1; -update t4 set b = b + 5 where a = 1; -insert into t5(a) values(20); -connection b; -set autocommit = 0; -insert into t1(a) values(7); -insert into t2(a) values(8); -delete from t2 where a = 3; -update t4 set b = b + 1 where a = 3; -commit; -drop trigger t1t; -drop trigger t2t; -drop trigger t3t; -drop trigger t4t; -drop table t1, t2, t3, t4, t5; -connection default; -disconnect a; -disconnect b; - -# -# Test that cascading updates leading to duplicate keys give the correct -# error message (bug #9680) -# - -CREATE TABLE t1 ( - field1 varchar(8) NOT NULL DEFAULT '', - field2 varchar(8) NOT NULL DEFAULT '', - PRIMARY KEY (field1, field2) -) ENGINE=InnoDB; - -CREATE TABLE t2 ( - field1 varchar(8) NOT NULL DEFAULT '' PRIMARY KEY, - FOREIGN KEY (field1) REFERENCES t1 (field1) - ON DELETE CASCADE ON UPDATE CASCADE -) ENGINE=InnoDB; - -INSERT INTO t1 VALUES ('old', 'somevalu'); -INSERT INTO t1 VALUES ('other', 'anyvalue'); - -INSERT INTO t2 VALUES ('old'); -INSERT INTO t2 VALUES ('other'); - ---error ER_FOREIGN_DUPLICATE_KEY -UPDATE t1 SET field1 = 'other' WHERE field2 = 'somevalu'; - -DROP TABLE t2; -DROP TABLE t1; - -# -# Bug#18477 - MySQL/InnoDB Ignoring Foreign Keys in ALTER TABLE -# -create table t1 ( - c1 bigint not null, - c2 bigint not null, - primary key (c1), - unique key (c2) -) engine=innodb; -# -create table t2 ( - c1 bigint not null, - primary key (c1) -) engine=innodb; -# -alter table t1 add constraint c2_fk foreign key (c2) - references t2(c1) on delete cascade; -show create table t1; -# -alter table t1 drop foreign key c2_fk; -show create table t1; -# -drop table t1, t2; - -# -# Bug #14360: problem with intervals -# - -create table t1(a date) engine=innodb; -create table t2(a date, key(a)) engine=innodb; -insert into t1 values('2005-10-01'); -insert into t2 values('2005-10-01'); -select * from t1, t2 - where t2.a between t1.a - interval 2 day and t1.a + interval 2 day; -drop table t1, t2; - -create table t1 (id int not null, f_id int not null, f int not null, -primary key(f_id, id)) engine=innodb; -create table t2 (id int not null,s_id int not null,s varchar(200), -primary key(id)) engine=innodb; -INSERT INTO t1 VALUES (8, 1, 3); -INSERT INTO t1 VALUES (1, 2, 1); -INSERT INTO t2 VALUES (1, 0, ''); -INSERT INTO t2 VALUES (8, 1, ''); -commit; -DELETE ml.* FROM t1 AS ml LEFT JOIN t2 AS mm ON (mm.id=ml.id) -WHERE mm.id IS NULL; -select ml.* from t1 as ml left join t2 as mm on (mm.id=ml.id) -where mm.id is null lock in share mode; -drop table t1,t2; - -# -# Test case where X-locks on unused rows should be released in a -# update (because READ COMMITTED isolation level) -# - -connect (a,localhost,root,,); -connect (b,localhost,root,,); -connection a; -create table t1(a int not null, b int, primary key(a)) engine=innodb; -insert into t1 values(1,1),(2,2),(3,1),(4,2),(5,1),(6,2),(7,3); -commit; -SET binlog_format='MIXED'; -set autocommit = 0; -SET SESSION TRANSACTION ISOLATION LEVEL READ COMMITTED; -update t1 set b = 5 where b = 1; -connection b; -SET binlog_format='MIXED'; -set autocommit = 0; -SET SESSION TRANSACTION ISOLATION LEVEL READ COMMITTED; -# -# X-lock to record (7,3) should be released in a update -# -select * from t1 where a = 7 and b = 3 for update; -connection a; -commit; -connection b; -commit; -drop table t1; -connection default; -disconnect a; -disconnect b; - -# -# Test case where no locks should be released (because we are not -# using READ COMMITTED isolation level) -# - -connect (a,localhost,root,,); -connect (b,localhost,root,,); -connection a; -create table t1(a int not null, b int, primary key(a)) engine=innodb; -insert into t1 values(1,1),(2,2),(3,1),(4,2),(5,1),(6,2); -commit; -set autocommit = 0; -select * from t1 lock in share mode; -update t1 set b = 5 where b = 1; -connection b; -set autocommit = 0; -# -# S-lock to records (2,2),(4,2), and (6,2) should not be released in a update -# ---error 1205 -select * from t1 where a = 2 and b = 2 for update; -# -# X-lock to record (1,1),(3,1),(5,1) should not be released in a update -# ---error 1205 -connection a; -commit; -connection b; -commit; -connection default; -disconnect a; -disconnect b; -drop table t1; - -# -# Consistent read should be used in following selects -# -# 1) INSERT INTO ... SELECT -# 2) UPDATE ... = ( SELECT ...) -# 3) CREATE ... SELECT - -connect (a,localhost,root,,); -connect (b,localhost,root,,); -connection a; -create table t1(a int not null, b int, primary key(a)) engine=innodb; -insert into t1 values (1,2),(5,3),(4,2); -create table t2(d int not null, e int, primary key(d)) engine=innodb; -insert into t2 values (8,6),(12,1),(3,1); -commit; -set autocommit = 0; -select * from t2 for update; -connection b; -SET binlog_format='MIXED'; -set autocommit = 0; -SET SESSION TRANSACTION ISOLATION LEVEL READ COMMITTED; -insert into t1 select * from t2; -update t1 set b = (select e from t2 where a = d); -create table t3(d int not null, e int, primary key(d)) engine=innodb -select * from t2; -commit; -connection a; -commit; -connection default; -disconnect a; -disconnect b; -drop table t1, t2, t3; - -# -# Consistent read should not be used if -# -# (a) isolation level is serializable OR -# (b) select ... lock in share mode OR -# (c) select ... for update -# -# in following queries: -# -# 1) INSERT INTO ... SELECT -# 2) UPDATE ... = ( SELECT ...) -# 3) CREATE ... SELECT - -connect (a,localhost,root,,); -connect (b,localhost,root,,); -connect (c,localhost,root,,); -connect (d,localhost,root,,); -connect (e,localhost,root,,); -connect (f,localhost,root,,); -connect (g,localhost,root,,); -connect (h,localhost,root,,); -connect (i,localhost,root,,); -connect (j,localhost,root,,); -connection a; -create table t1(a int not null, b int, primary key(a)) engine=innodb; -insert into t1 values (1,2),(5,3),(4,2); -create table t2(a int not null, b int, primary key(a)) engine=innodb; -insert into t2 values (8,6),(12,1),(3,1); -create table t3(d int not null, b int, primary key(d)) engine=innodb; -insert into t3 values (8,6),(12,1),(3,1); -create table t5(a int not null, b int, primary key(a)) engine=innodb; -insert into t5 values (1,2),(5,3),(4,2); -create table t6(d int not null, e int, primary key(d)) engine=innodb; -insert into t6 values (8,6),(12,1),(3,1); -create table t8(a int not null, b int, primary key(a)) engine=innodb; -insert into t8 values (1,2),(5,3),(4,2); -create table t9(d int not null, e int, primary key(d)) engine=innodb; -insert into t9 values (8,6),(12,1),(3,1); -commit; -set autocommit = 0; -select * from t2 for update; -connection b; -SET binlog_format='MIXED'; -set autocommit = 0; -SET SESSION TRANSACTION ISOLATION LEVEL SERIALIZABLE; ---send -insert into t1 select * from t2; -connection c; -SET binlog_format='MIXED'; -set autocommit = 0; -SET SESSION TRANSACTION ISOLATION LEVEL SERIALIZABLE; ---send -update t3 set b = (select b from t2 where a = d); -connection d; -SET binlog_format='MIXED'; -set autocommit = 0; -SET SESSION TRANSACTION ISOLATION LEVEL SERIALIZABLE; ---send -create table t4(a int not null, b int, primary key(a)) engine=innodb select * from t2; -connection e; -SET binlog_format='MIXED'; -set autocommit = 0; -SET SESSION TRANSACTION ISOLATION LEVEL READ COMMITTED; ---send -insert into t5 (select * from t2 lock in share mode); -connection f; -SET binlog_format='MIXED'; -set autocommit = 0; -SET SESSION TRANSACTION ISOLATION LEVEL READ COMMITTED; ---send -update t6 set e = (select b from t2 where a = d lock in share mode); -connection g; -SET binlog_format='MIXED'; -set autocommit = 0; -SET SESSION TRANSACTION ISOLATION LEVEL READ COMMITTED; ---send -create table t7(a int not null, b int, primary key(a)) engine=innodb select * from t2 lock in share mode; -connection h; -SET binlog_format='MIXED'; -set autocommit = 0; -SET SESSION TRANSACTION ISOLATION LEVEL READ COMMITTED; ---send -insert into t8 (select * from t2 for update); -connection i; -SET binlog_format='MIXED'; -set autocommit = 0; -SET SESSION TRANSACTION ISOLATION LEVEL READ COMMITTED; ---send -update t9 set e = (select b from t2 where a = d for update); -connection j; -SET binlog_format='MIXED'; -set autocommit = 0; -SET SESSION TRANSACTION ISOLATION LEVEL READ COMMITTED; ---send -create table t10(a int not null, b int, primary key(a)) engine=innodb select * from t2 for update; - -connection b; ---error 1205 -reap; - -connection c; ---error 1205 -reap; - -connection d; ---error 1205 -reap; - -connection e; ---error 1205 -reap; - -connection f; ---error 1205 -reap; - -connection g; ---error 1205 -reap; - -connection h; ---error 1205 -reap; - -connection i; ---error 1205 -reap; - -connection j; ---error 1205 -reap; - -connection a; -commit; - -connection default; -disconnect a; -disconnect b; -disconnect c; -disconnect d; -disconnect e; -disconnect f; -disconnect g; -disconnect h; -disconnect i; -disconnect j; -drop table t1, t2, t3, t5, t6, t8, t9; - -# bug 18934, "InnoDB crashes when table uses column names like DB_ROW_ID" ---error 1005 -CREATE TABLE t1 (DB_ROW_ID int) engine=innodb; - -# -# Bug #17152: Wrong result with BINARY comparison on aliased column -# - -CREATE TABLE t1 ( - a BIGINT(20) NOT NULL, - PRIMARY KEY (a) - ) ENGINE=INNODB DEFAULT CHARSET=UTF8; - -CREATE TABLE t2 ( - a BIGINT(20) NOT NULL, - b VARCHAR(128) NOT NULL, - c TEXT NOT NULL, - PRIMARY KEY (a,b), - KEY idx_t2_b_c (b,c(200)), - CONSTRAINT t_fk FOREIGN KEY (a) REFERENCES t1 (a) - ON DELETE CASCADE - ) ENGINE=INNODB DEFAULT CHARSET=UTF8; - -INSERT INTO t1 VALUES (1); -INSERT INTO t2 VALUES (1, 'bar', 'vbar'); -INSERT INTO t2 VALUES (1, 'BAR2', 'VBAR'); -INSERT INTO t2 VALUES (1, 'bar_bar', 'bibi'); -INSERT INTO t2 VALUES (1, 'customer_over', '1'); - -SELECT * FROM t2 WHERE b = 'customer_over'; -SELECT * FROM t2 WHERE BINARY b = 'customer_over'; -SELECT DISTINCT p0.a FROM t2 p0 WHERE p0.b = 'customer_over'; -/* Bang: Empty result set, above was expected: */ -SELECT DISTINCT p0.a FROM t2 p0 WHERE BINARY p0.b = 'customer_over'; -SELECT p0.a FROM t2 p0 WHERE BINARY p0.b = 'customer_over'; - -drop table t2, t1; - -# -# Test optimize on table with open transaction -# - -CREATE TABLE t1 ( a int ) ENGINE=innodb; -BEGIN; -INSERT INTO t1 VALUES (1); -OPTIMIZE TABLE t1; -DROP TABLE t1; - -# -# Bug #24741 (existing cascade clauses disappear when adding foreign keys) -# - -CREATE TABLE t1 (id int PRIMARY KEY, f int NOT NULL, INDEX(f)) ENGINE=InnoDB; - -CREATE TABLE t2 (id int PRIMARY KEY, f INT NOT NULL, - CONSTRAINT t2_t1 FOREIGN KEY (id) REFERENCES t1 (id) - ON DELETE CASCADE ON UPDATE CASCADE) ENGINE=InnoDB; - -ALTER TABLE t2 ADD FOREIGN KEY (f) REFERENCES t1 (f) ON -DELETE CASCADE ON UPDATE CASCADE; - -SHOW CREATE TABLE t2; -DROP TABLE t2, t1; - -# -# Bug #25927: Prevent ALTER TABLE ... MODIFY ... NOT NULL on columns -# for which there is a foreign key constraint ON ... SET NULL. -# - -CREATE TABLE t1 (a INT, INDEX(a)) ENGINE=InnoDB; -CREATE TABLE t2 (a INT, INDEX(a)) ENGINE=InnoDB; -INSERT INTO t1 VALUES (1); -INSERT INTO t2 VALUES (1); -ALTER TABLE t2 ADD FOREIGN KEY (a) REFERENCES t1 (a) ON DELETE SET NULL; -# mysqltest first does replace_regex, then replace_result ---replace_regex /'[^']*test\/#sql-[0-9a-f_]*'/'#sql-temporary'/ -# Embedded server doesn't chdir to data directory ---replace_result $MYSQLTEST_VARDIR . mysqld.1/data/ '' ---error 1025 -ALTER TABLE t2 MODIFY a INT NOT NULL; -DELETE FROM t1; -DROP TABLE t2,t1; - -# -# Bug #26835: table corruption after delete+insert -# - -CREATE TABLE t1 (a VARCHAR(5) COLLATE utf8_unicode_ci PRIMARY KEY) -ENGINE=InnoDB; -INSERT INTO t1 VALUES (0xEFBCA4EFBCA4EFBCA4); -DELETE FROM t1; -INSERT INTO t1 VALUES ('DDD'); -SELECT * FROM t1; -DROP TABLE t1; - -# -# Bug #23313 (AUTO_INCREMENT=# not reported back for InnoDB tables) -# Bug #21404 (AUTO_INCREMENT value reset when Adding FKEY (or ALTER?)) -# - -CREATE TABLE t1 (id int PRIMARY KEY AUTO_INCREMENT) ENGINE=InnoDB -AUTO_INCREMENT=42; - -INSERT INTO t1 VALUES (0),(347),(0); -SELECT * FROM t1; - -SHOW CREATE TABLE t1; - -CREATE TABLE t2 (id int PRIMARY KEY) ENGINE=InnoDB; -INSERT INTO t2 VALUES(42),(347),(348); -ALTER TABLE t1 ADD CONSTRAINT t1_t2 FOREIGN KEY (id) REFERENCES t2(id); -SHOW CREATE TABLE t1; - -DROP TABLE t1,t2; - -# -# Bug #21101 (Prints wrong error message if max row size is too large) -# ---error 1118 -CREATE TABLE t1 ( - c01 CHAR(255), c02 CHAR(255), c03 CHAR(255), c04 CHAR(255), - c05 CHAR(255), c06 CHAR(255), c07 CHAR(255), c08 CHAR(255), - c09 CHAR(255), c10 CHAR(255), c11 CHAR(255), c12 CHAR(255), - c13 CHAR(255), c14 CHAR(255), c15 CHAR(255), c16 CHAR(255), - c17 CHAR(255), c18 CHAR(255), c19 CHAR(255), c20 CHAR(255), - c21 CHAR(255), c22 CHAR(255), c23 CHAR(255), c24 CHAR(255), - c25 CHAR(255), c26 CHAR(255), c27 CHAR(255), c28 CHAR(255), - c29 CHAR(255), c30 CHAR(255), c31 CHAR(255), c32 CHAR(255) - ) ENGINE = InnoDB; - -# -# Bug #31860 InnoDB assumes AUTOINC values can only be positive. -# -DROP TABLE IF EXISTS t1; -CREATE TABLE t1( - id BIGINT(20) NOT NULL AUTO_INCREMENT PRIMARY KEY - ) ENGINE=InnoDB; -INSERT INTO t1 VALUES(-10); -SELECT * FROM t1; -# -# NOTE: The server really needs to be restarted at this point -# for the test to be useful. -# -# Without the fix InnoDB would trip over an assertion here. -INSERT INTO t1 VALUES(NULL); -# The next value should be 1 and not -9 or a -ve number -SELECT * FROM t1; -DROP TABLE t1; - -# -# Bug #21409 Incorrect result returned when in READ-COMMITTED with -# query_cache ON -# -CONNECT (c1,localhost,root,,); -CONNECT (c2,localhost,root,,); -CONNECTION c1; -SET binlog_format='MIXED'; -SET TX_ISOLATION='read-committed'; -SET AUTOCOMMIT=0; -DROP TABLE IF EXISTS t1, t2; -CREATE TABLE t1 ( a int ) ENGINE=InnoDB; -CREATE TABLE t2 LIKE t1; -SELECT * FROM t2; -CONNECTION c2; -SET binlog_format='MIXED'; -SET TX_ISOLATION='read-committed'; -SET AUTOCOMMIT=0; -INSERT INTO t1 VALUES (1); -COMMIT; -CONNECTION c1; -SELECT * FROM t1 WHERE a=1; -DISCONNECT c1; -DISCONNECT c2; -CONNECT (c1,localhost,root,,); -CONNECT (c2,localhost,root,,); -CONNECTION c1; -SET binlog_format='MIXED'; -SET TX_ISOLATION='read-committed'; -SET AUTOCOMMIT=0; -SELECT * FROM t2; -CONNECTION c2; -SET binlog_format='MIXED'; -SET TX_ISOLATION='read-committed'; -SET AUTOCOMMIT=0; -INSERT INTO t1 VALUES (2); -COMMIT; -CONNECTION c1; -# The result set below should be the same for both selects -SELECT * FROM t1 WHERE a=2; -SELECT * FROM t1 WHERE a=2; -DROP TABLE t1; -DROP TABLE t2; -DISCONNECT c1; -DISCONNECT c2; -CONNECTION default; - -# -# Bug #29157 UPDATE, changed rows incorrect -# -create table t1 (i int, j int) engine=innodb; -insert into t1 (i, j) values (1, 1), (2, 2); ---enable_info -update t1 set j = 2; ---disable_info -drop table t1; - -# -# Bug #32440 InnoDB free space info does not appear in SHOW TABLE STATUS or -# I_S -# -create table t1 (id int) comment='this is a comment' engine=innodb; -select table_comment, data_free > 0 as data_free_is_set - from information_schema.tables - where table_schema='test' and table_name = 't1'; -drop table t1; - -# -# Bug 34920 test -# -CONNECTION default; -CREATE TABLE t1 ( - c1 INT(10) UNSIGNED NOT NULL AUTO_INCREMENT, - c2 VARCHAR(128) NOT NULL, - PRIMARY KEY(c1) -) ENGINE=InnoDB DEFAULT CHARSET=utf8 AUTO_INCREMENT=100; - -CREATE TABLE t2 ( - c1 INT(10) UNSIGNED NOT NULL AUTO_INCREMENT, - c2 INT(10) UNSIGNED DEFAULT NULL, - PRIMARY KEY(c1) -) ENGINE=InnoDB DEFAULT CHARSET=utf8 AUTO_INCREMENT=200; - -SELECT AUTO_INCREMENT FROM INFORMATION_SCHEMA.TABLES WHERE table_name = 't2'; -ALTER TABLE t2 ADD CONSTRAINT t1_t2_1 FOREIGN KEY(c1) REFERENCES t1(c1); -SELECT AUTO_INCREMENT FROM INFORMATION_SCHEMA.TABLES WHERE table_name = 't2'; -DROP TABLE t2; -DROP TABLE t1; -# End 34920 test -# -# Bug #29507 TRUNCATE shows to many rows effected -# -CONNECTION default; -CREATE TABLE t1 (c1 int default NULL, - c2 int default NULL -) ENGINE=InnoDB DEFAULT CHARSET=latin1; - ---enable_info -TRUNCATE TABLE t1; - -INSERT INTO t1 VALUES (1, 1), (2, 2), (3, 3), (4, 4), (5, 5); -TRUNCATE TABLE t1; - ---disable_info -DROP TABLE t1; -# -# Bug#35537 Innodb doesn't increment handler_update and handler_delete. -# --- disable_query_log --- disable_result_log - -CONNECT (c1,localhost,root,,); - -DROP TABLE IF EXISTS bug35537; -CREATE TABLE bug35537 ( - c1 int -) ENGINE=InnoDB; - -INSERT INTO bug35537 VALUES (1); - --- enable_result_log - -SHOW SESSION STATUS LIKE 'Handler_update%'; -SHOW SESSION STATUS LIKE 'Handler_delete%'; - -UPDATE bug35537 SET c1 = 2 WHERE c1 = 1; -DELETE FROM bug35537 WHERE c1 = 2; - -SHOW SESSION STATUS LIKE 'Handler_update%'; -SHOW SESSION STATUS LIKE 'Handler_delete%'; - -DROP TABLE bug35537; - -DISCONNECT c1; -CONNECTION default; - -####################################################################### -# # -# Please, DO NOT TOUCH this file as well as the innodb.result file. # -# These files are to be modified ONLY BY INNOBASE guys. # -# # -# Use innodb_mysql.[test|result] files instead. # -# # -# If nevertheless you need to make some changes here, please, forward # -# your commit message To: dev(a)innodb.com Cc: dev-innodb(a)mysql.com # -# (otherwise your changes may be erased). # -# # -####################################################################### === added file 'mysql-test/t/innodb_bug34053.test' --- a/mysql-test/t/innodb_bug34053.test 1970-01-01 00:00:00 +0000 +++ b/mysql-test/t/innodb_bug34053.test 2009-06-09 13:19:13 +0000 @@ -0,0 +1,50 @@ +# +# Make sure http://bugs.mysql.com/34053 remains fixed. +# + +-- source include/not_embedded.inc +-- source include/have_innodb.inc + +SET storage_engine=InnoDB; + +# we do not really care about what gets printed, we are only +# interested in getting success or failure according to our +# expectations +-- disable_query_log +-- disable_result_log + +GRANT USAGE ON *.* TO 'shane'@'localhost' IDENTIFIED BY '12345'; +FLUSH PRIVILEGES; + +-- connect (con1,localhost,shane,12345,) + +-- connection con1 +-- error ER_SPECIFIC_ACCESS_DENIED_ERROR +CREATE TABLE innodb_monitor (a INT) ENGINE=INNODB; +-- error ER_SPECIFIC_ACCESS_DENIED_ERROR +CREATE TABLE innodb_mem_validate (a INT) ENGINE=INNODB; +CREATE TABLE innodb_monitorx (a INT) ENGINE=INNODB; +DROP TABLE innodb_monitorx; +CREATE TABLE innodb_monito (a INT) ENGINE=INNODB; +DROP TABLE innodb_monito; +CREATE TABLE xinnodb_monitor (a INT) ENGINE=INNODB; +DROP TABLE xinnodb_monitor; +CREATE TABLE nnodb_monitor (a INT) ENGINE=INNODB; +DROP TABLE nnodb_monitor; + +-- connection default +CREATE TABLE innodb_monitor (a INT) ENGINE=INNODB; +CREATE TABLE innodb_mem_validate (a INT) ENGINE=INNODB; + +-- connection con1 +-- error ER_SPECIFIC_ACCESS_DENIED_ERROR +DROP TABLE innodb_monitor; +-- error ER_SPECIFIC_ACCESS_DENIED_ERROR +DROP TABLE innodb_mem_validate; + +-- connection default +DROP TABLE innodb_monitor; +DROP TABLE innodb_mem_validate; +DROP USER 'shane'@'localhost'; + +-- disconnect con1 === removed file 'mysql-test/t/innodb_bug34053.test' --- a/mysql-test/t/innodb_bug34053.test 2008-02-22 23:56:34 +0000 +++ b/mysql-test/t/innodb_bug34053.test 1970-01-01 00:00:00 +0000 @@ -1,50 +0,0 @@ -# -# Make sure http://bugs.mysql.com/34053 remains fixed. -# - --- source include/not_embedded.inc --- source include/have_innodb.inc - -SET storage_engine=InnoDB; - -# we do not really care about what gets printed, we are only -# interested in getting success or failure according to our -# expectations --- disable_query_log --- disable_result_log - -GRANT USAGE ON *.* TO 'shane'@'localhost' IDENTIFIED BY '12345'; -FLUSH PRIVILEGES; - --- connect (con1,localhost,shane,12345,) - --- connection con1 --- error ER_SPECIFIC_ACCESS_DENIED_ERROR -CREATE TABLE innodb_monitor (a INT) ENGINE=INNODB; --- error ER_SPECIFIC_ACCESS_DENIED_ERROR -CREATE TABLE innodb_mem_validate (a INT) ENGINE=INNODB; -CREATE TABLE innodb_monitorx (a INT) ENGINE=INNODB; -DROP TABLE innodb_monitorx; -CREATE TABLE innodb_monito (a INT) ENGINE=INNODB; -DROP TABLE innodb_monito; -CREATE TABLE xinnodb_monitor (a INT) ENGINE=INNODB; -DROP TABLE xinnodb_monitor; -CREATE TABLE nnodb_monitor (a INT) ENGINE=INNODB; -DROP TABLE nnodb_monitor; - --- connection default -CREATE TABLE innodb_monitor (a INT) ENGINE=INNODB; -CREATE TABLE innodb_mem_validate (a INT) ENGINE=INNODB; - --- connection con1 --- error ER_SPECIFIC_ACCESS_DENIED_ERROR -DROP TABLE innodb_monitor; --- error ER_SPECIFIC_ACCESS_DENIED_ERROR -DROP TABLE innodb_mem_validate; - --- connection default -DROP TABLE innodb_monitor; -DROP TABLE innodb_mem_validate; -DROP USER 'shane'@'localhost'; - --- disconnect con1 === added file 'mysql-test/t/innodb_bug34300.test' --- a/mysql-test/t/innodb_bug34300.test 1970-01-01 00:00:00 +0000 +++ b/mysql-test/t/innodb_bug34300.test 2009-06-11 12:53:26 +0000 @@ -0,0 +1,36 @@ +# +# Bug#34300 Tinyblob & tinytext fields currupted after export/import and alter in 5.1 +# http://bugs.mysql.com/34300 +# + +-- source include/have_innodb.inc + +-- disable_query_log +-- disable_result_log + +# set packet size and reconnect +SET @save_max_allowed_packet=@@global.max_allowed_packet; +SET @@global.max_allowed_packet=16777216; +--connect (newconn, localhost, root,,) + +DROP TABLE IF EXISTS bug34300; +CREATE TABLE bug34300 ( + f4 TINYTEXT, + f6 MEDIUMTEXT, + f8 TINYBLOB +) ENGINE=InnoDB; + +INSERT INTO bug34300 VALUES ('xxx', repeat('a', 8459264), 'zzz'); + +-- enable_result_log + +SELECT f4, f8 FROM bug34300; + +ALTER TABLE bug34300 ADD COLUMN (f10 INT); + +SELECT f4, f8 FROM bug34300; + +DROP TABLE bug34300; +disconnect newconn; +connection default; +SET @@global.max_allowed_packet=@save_max_allowed_packet; === removed file 'mysql-test/t/innodb_bug34300.test' --- a/mysql-test/t/innodb_bug34300.test 2009-02-19 09:01:25 +0000 +++ b/mysql-test/t/innodb_bug34300.test 1970-01-01 00:00:00 +0000 @@ -1,41 +0,0 @@ -# -# Bug#34300 Tinyblob & tinytext fields currupted after export/import and alter in 5.1 -# http://bugs.mysql.com/34300 -# - --- source include/have_innodb.inc - --- disable_query_log --- disable_result_log - -# set packet size and reconnect -SET @@global.max_allowed_packet=16777216; ---connect (newconn, localhost, root,,) - -DROP TABLE IF EXISTS bug34300; -CREATE TABLE bug34300 ( - f4 TINYTEXT, - f6 MEDIUMTEXT, - f8 TINYBLOB -) ENGINE=InnoDB; - -INSERT INTO bug34300 VALUES ('xxx', repeat('a', 8459264), 'zzz'); - --- enable_query_log --- enable_result_log - -SELECT f4, f8 FROM bug34300; - -ALTER TABLE bug34300 ADD COLUMN (f10 INT); - -SELECT f4, f8 FROM bug34300; - -DROP TABLE bug34300; - -disconnect newconn; -connection default; ---disable_result_log ---disable_query_log -SET @@global.max_allowed_packet=default; ---enable_result_log ---enable_query_log === added file 'mysql-test/t/innodb_bug35220.test' --- a/mysql-test/t/innodb_bug35220.test 1970-01-01 00:00:00 +0000 +++ b/mysql-test/t/innodb_bug35220.test 2009-06-09 13:19:13 +0000 @@ -0,0 +1,16 @@ +# +# Bug#35220 ALTER TABLE too picky on reserved word "foreign" +# http://bugs.mysql.com/35220 +# + +-- source include/have_innodb.inc + +SET storage_engine=InnoDB; + +# we care only that the following SQL commands do not produce errors +-- disable_query_log +-- disable_result_log + +CREATE TABLE bug35220 (foreign_col INT, dummy_cant_delete_all_columns INT); +ALTER TABLE bug35220 DROP foreign_col; +DROP TABLE bug35220; === removed file 'mysql-test/t/innodb_bug35220.test' --- a/mysql-test/t/innodb_bug35220.test 2008-08-08 00:25:24 +0000 +++ b/mysql-test/t/innodb_bug35220.test 1970-01-01 00:00:00 +0000 @@ -1,16 +0,0 @@ -# -# Bug#35220 ALTER TABLE too picky on reserved word "foreign" -# http://bugs.mysql.com/35220 -# - --- source include/have_innodb.inc - -SET storage_engine=InnoDB; - -# we care only that the following SQL commands do not produce errors --- disable_query_log --- disable_result_log - -CREATE TABLE bug35220 (foreign_col INT, dummy_cant_delete_all_columns INT); -ALTER TABLE bug35220 DROP foreign_col; -DROP TABLE bug35220; === added file 'mysql-test/t/innodb_bug36169.test' --- a/mysql-test/t/innodb_bug36169.test 1970-01-01 00:00:00 +0000 +++ b/mysql-test/t/innodb_bug36169.test 2009-06-11 12:53:26 +0000 @@ -0,0 +1,1162 @@ +# +# Bug#36169 create innodb compressed table with too large row size crashed +# http://bugs.mysql.com/36169 +# + +-- source include/have_innodb.inc + +SET @save_innodb_file_format=@@global.innodb_file_format; +SET @save_innodb_file_format_check=@@global.innodb_file_format_check; +SET @save_innodb_file_per_table=@@global.innodb_file_per_table; +SET GLOBAL innodb_file_format='Barracuda'; +SET GLOBAL innodb_file_per_table=ON; + +# +# The following is copied from http://bugs.mysql.com/36169 +# (http://bugs.mysql.com/file.php?id=9121) +# Probably it can be simplified but that is not obvious. +# + +# we care only that the following SQL commands do produce errors +# as expected and do not crash the server +-- disable_query_log +-- disable_result_log + +# Generating 10 tables +# Creating a table with 94 columns and 24 indexes +DROP TABLE IF EXISTS `table0`; +--error ER_TOO_BIG_ROWSIZE +CREATE TABLE IF NOT EXISTS `table0` +(`col0` BOOL, +`col1` BOOL, +`col2` TINYINT, +`col3` DATE, +`col4` TIME, +`col5` SET ('test1','test2','test3'), +`col6` TIME, +`col7` TEXT, +`col8` DECIMAL, +`col9` SET ('test1','test2','test3'), +`col10` FLOAT, +`col11` DOUBLE PRECISION, +`col12` ENUM ('test1','test2','test3'), +`col13` TINYBLOB, +`col14` YEAR, +`col15` SET ('test1','test2','test3'), +`col16` NUMERIC, +`col17` NUMERIC, +`col18` BLOB, +`col19` DATETIME, +`col20` DOUBLE PRECISION, +`col21` DECIMAL, +`col22` DATETIME, +`col23` NUMERIC, +`col24` NUMERIC, +`col25` LONGTEXT, +`col26` TINYBLOB, +`col27` TIME, +`col28` TINYBLOB, +`col29` ENUM ('test1','test2','test3'), +`col30` SMALLINT, +`col31` REAL, +`col32` FLOAT, +`col33` CHAR (175), +`col34` TINYTEXT, +`col35` TINYTEXT, +`col36` TINYBLOB, +`col37` TINYBLOB, +`col38` TINYTEXT, +`col39` MEDIUMBLOB, +`col40` TIMESTAMP, +`col41` DOUBLE, +`col42` SMALLINT, +`col43` LONGBLOB, +`col44` VARCHAR (80), +`col45` MEDIUMTEXT, +`col46` NUMERIC, +`col47` BIGINT, +`col48` DATE, +`col49` TINYBLOB, +`col50` DATE, +`col51` BOOL, +`col52` MEDIUMINT, +`col53` FLOAT, +`col54` TINYBLOB, +`col55` LONGTEXT, +`col56` SMALLINT, +`col57` ENUM ('test1','test2','test3'), +`col58` DATETIME, +`col59` MEDIUMTEXT, +`col60` VARCHAR (232), +`col61` NUMERIC, +`col62` YEAR, +`col63` SMALLINT, +`col64` TIMESTAMP, +`col65` BLOB, +`col66` LONGBLOB, +`col67` INT, +`col68` LONGTEXT, +`col69` ENUM ('test1','test2','test3'), +`col70` INT, +`col71` TIME, +`col72` TIMESTAMP, +`col73` TIMESTAMP, +`col74` VARCHAR (170), +`col75` SET ('test1','test2','test3'), +`col76` TINYBLOB, +`col77` BIGINT, +`col78` NUMERIC, +`col79` DATETIME, +`col80` YEAR, +`col81` NUMERIC, +`col82` LONGBLOB, +`col83` TEXT, +`col84` CHAR (83), +`col85` DECIMAL, +`col86` FLOAT, +`col87` INT, +`col88` VARCHAR (145), +`col89` DATE, +`col90` DECIMAL, +`col91` DECIMAL, +`col92` MEDIUMBLOB, +`col93` TIME, +KEY `idx0` (`col69`,`col90`,`col8`), +KEY `idx1` (`col60`), +KEY `idx2` (`col60`,`col70`,`col74`), +KEY `idx3` (`col22`,`col32`,`col72`,`col30`), +KEY `idx4` (`col29`), +KEY `idx5` (`col19`,`col45`(143)), +KEY `idx6` (`col46`,`col48`,`col5`,`col39`(118)), +KEY `idx7` (`col48`,`col61`), +KEY `idx8` (`col93`), +KEY `idx9` (`col31`), +KEY `idx10` (`col30`,`col21`), +KEY `idx11` (`col67`), +KEY `idx12` (`col44`,`col6`,`col8`,`col38`(226)), +KEY `idx13` (`col71`,`col41`,`col15`,`col49`(88)), +KEY `idx14` (`col78`), +KEY `idx15` (`col63`,`col67`,`col64`), +KEY `idx16` (`col17`,`col86`), +KEY `idx17` (`col77`,`col56`,`col10`,`col55`(24)), +KEY `idx18` (`col62`), +KEY `idx19` (`col31`,`col57`,`col56`,`col53`), +KEY `idx20` (`col46`), +KEY `idx21` (`col83`(54)), +KEY `idx22` (`col51`,`col7`(120)), +KEY `idx23` (`col7`(163),`col31`,`col71`,`col14`) +)engine=innodb ROW_FORMAT=COMPRESSED KEY_BLOCK_SIZE=1; + +# Creating a table with 10 columns and 32 indexes +DROP TABLE IF EXISTS `table1`; +--error ER_TOO_BIG_ROWSIZE +CREATE TABLE IF NOT EXISTS `table1` +(`col0` CHAR (113), +`col1` FLOAT, +`col2` BIGINT, +`col3` DECIMAL, +`col4` BLOB, +`col5` LONGTEXT, +`col6` SET ('test1','test2','test3'), +`col7` BIGINT, +`col8` BIGINT, +`col9` TINYBLOB, +KEY `idx0` (`col5`(101),`col7`,`col8`), +KEY `idx1` (`col8`), +KEY `idx2` (`col4`(177),`col9`(126),`col6`,`col3`), +KEY `idx3` (`col5`(160)), +KEY `idx4` (`col9`(242)), +KEY `idx5` (`col4`(139),`col2`,`col3`), +KEY `idx6` (`col7`), +KEY `idx7` (`col6`,`col2`,`col0`,`col3`), +KEY `idx8` (`col9`(66)), +KEY `idx9` (`col5`(253)), +KEY `idx10` (`col1`,`col7`,`col2`), +KEY `idx11` (`col9`(242),`col0`,`col8`,`col5`(163)), +KEY `idx12` (`col8`), +KEY `idx13` (`col0`,`col9`(37)), +KEY `idx14` (`col0`), +KEY `idx15` (`col5`(111)), +KEY `idx16` (`col8`,`col0`,`col5`(13)), +KEY `idx17` (`col4`(139)), +KEY `idx18` (`col5`(189),`col2`,`col3`,`col9`(136)), +KEY `idx19` (`col0`,`col3`,`col1`,`col8`), +KEY `idx20` (`col8`), +KEY `idx21` (`col0`,`col7`,`col9`(227),`col3`), +KEY `idx22` (`col0`), +KEY `idx23` (`col2`), +KEY `idx24` (`col3`), +KEY `idx25` (`col2`,`col3`), +KEY `idx26` (`col0`), +KEY `idx27` (`col5`(254)), +KEY `idx28` (`col3`), +KEY `idx29` (`col3`), +KEY `idx30` (`col7`,`col3`,`col0`,`col4`(220)), +KEY `idx31` (`col4`(1),`col0`) +)engine=innodb ROW_FORMAT=COMPRESSED KEY_BLOCK_SIZE=1; + +# Creating a table with 141 columns and 18 indexes +DROP TABLE IF EXISTS `table2`; +--error ER_TOO_BIG_ROWSIZE +CREATE TABLE IF NOT EXISTS `table2` +(`col0` BOOL, +`col1` MEDIUMINT, +`col2` VARCHAR (209), +`col3` MEDIUMBLOB, +`col4` CHAR (13), +`col5` DOUBLE, +`col6` TINYTEXT, +`col7` REAL, +`col8` SMALLINT, +`col9` BLOB, +`col10` TINYINT, +`col11` DECIMAL, +`col12` BLOB, +`col13` DECIMAL, +`col14` LONGBLOB, +`col15` SMALLINT, +`col16` LONGBLOB, +`col17` TINYTEXT, +`col18` FLOAT, +`col19` CHAR (78), +`col20` MEDIUMTEXT, +`col21` SET ('test1','test2','test3'), +`col22` MEDIUMINT, +`col23` INT, +`col24` MEDIUMBLOB, +`col25` ENUM ('test1','test2','test3'), +`col26` TINYBLOB, +`col27` VARCHAR (116), +`col28` TIMESTAMP, +`col29` BLOB, +`col30` SMALLINT, +`col31` DOUBLE PRECISION, +`col32` DECIMAL, +`col33` DECIMAL, +`col34` TEXT, +`col35` MEDIUMINT, +`col36` MEDIUMINT, +`col37` BIGINT, +`col38` VARCHAR (253), +`col39` TINYBLOB, +`col40` MEDIUMBLOB, +`col41` BIGINT, +`col42` DOUBLE, +`col43` TEXT, +`col44` BLOB, +`col45` TIME, +`col46` MEDIUMINT, +`col47` DOUBLE PRECISION, +`col48` SET ('test1','test2','test3'), +`col49` DOUBLE PRECISION, +`col50` VARCHAR (97), +`col51` TEXT, +`col52` NUMERIC, +`col53` ENUM ('test1','test2','test3'), +`col54` MEDIUMTEXT, +`col55` MEDIUMINT, +`col56` DATETIME, +`col57` DATETIME, +`col58` MEDIUMTEXT, +`col59` CHAR (244), +`col60` LONGBLOB, +`col61` MEDIUMBLOB, +`col62` DOUBLE, +`col63` SMALLINT, +`col64` BOOL, +`col65` SMALLINT, +`col66` VARCHAR (212), +`col67` TIME, +`col68` REAL, +`col69` BOOL, +`col70` BIGINT, +`col71` DATE, +`col72` TINYINT, +`col73` ENUM ('test1','test2','test3'), +`col74` DATE, +`col75` TIME, +`col76` DATETIME, +`col77` BOOL, +`col78` TINYTEXT, +`col79` MEDIUMINT, +`col80` NUMERIC, +`col81` LONGTEXT, +`col82` SET ('test1','test2','test3'), +`col83` DOUBLE PRECISION, +`col84` NUMERIC, +`col85` VARCHAR (184), +`col86` DOUBLE PRECISION, +`col87` MEDIUMTEXT, +`col88` MEDIUMBLOB, +`col89` BOOL, +`col90` SMALLINT, +`col91` TINYINT, +`col92` ENUM ('test1','test2','test3'), +`col93` BOOL, +`col94` TIMESTAMP, +`col95` BOOL, +`col96` MEDIUMTEXT, +`col97` DECIMAL, +`col98` BOOL, +`col99` DECIMAL, +`col100` MEDIUMINT, +`col101` DOUBLE PRECISION, +`col102` TINYINT, +`col103` BOOL, +`col104` MEDIUMINT, +`col105` DECIMAL, +`col106` NUMERIC, +`col107` TIMESTAMP, +`col108` MEDIUMBLOB, +`col109` TINYBLOB, +`col110` SET ('test1','test2','test3'), +`col111` YEAR, +`col112` TIMESTAMP, +`col113` CHAR (201), +`col114` BOOL, +`col115` TINYINT, +`col116` DOUBLE, +`col117` TINYINT, +`col118` TIMESTAMP, +`col119` SET ('test1','test2','test3'), +`col120` SMALLINT, +`col121` TINYBLOB, +`col122` TIMESTAMP, +`col123` BLOB, +`col124` DATE, +`col125` SMALLINT, +`col126` ENUM ('test1','test2','test3'), +`col127` MEDIUMBLOB, +`col128` DOUBLE PRECISION, +`col129` REAL, +`col130` VARCHAR (159), +`col131` MEDIUMBLOB, +`col132` BIGINT, +`col133` INT, +`col134` SET ('test1','test2','test3'), +`col135` CHAR (198), +`col136` SET ('test1','test2','test3'), +`col137` MEDIUMTEXT, +`col138` SMALLINT, +`col139` BLOB, +`col140` LONGBLOB, +KEY `idx0` (`col14`(139),`col24`(208),`col38`,`col35`), +KEY `idx1` (`col48`,`col118`,`col29`(131),`col100`), +KEY `idx2` (`col86`,`col67`,`col43`(175)), +KEY `idx3` (`col19`), +KEY `idx4` (`col40`(220),`col67`), +KEY `idx5` (`col99`,`col56`), +KEY `idx6` (`col68`,`col28`,`col137`(157)), +KEY `idx7` (`col51`(160),`col99`,`col45`,`col39`(9)), +KEY `idx8` (`col15`,`col52`,`col90`,`col94`), +KEY `idx9` (`col24`(3),`col139`(248),`col108`(118),`col41`), +KEY `idx10` (`col36`,`col92`,`col114`), +KEY `idx11` (`col115`,`col9`(116)), +KEY `idx12` (`col130`,`col93`,`col134`), +KEY `idx13` (`col123`(65)), +KEY `idx14` (`col44`(90),`col86`,`col119`), +KEY `idx15` (`col69`), +KEY `idx16` (`col132`,`col81`(118),`col18`), +KEY `idx17` (`col24`(250),`col7`,`col92`,`col45`) +)engine=innodb ROW_FORMAT=COMPRESSED KEY_BLOCK_SIZE=1; + +# Creating a table with 199 columns and 1 indexes +DROP TABLE IF EXISTS `table3`; +--error ER_TOO_BIG_ROWSIZE +CREATE TABLE IF NOT EXISTS `table3` +(`col0` SMALLINT, +`col1` SET ('test1','test2','test3'), +`col2` TINYTEXT, +`col3` DOUBLE, +`col4` NUMERIC, +`col5` DATE, +`col6` BIGINT, +`col7` DOUBLE, +`col8` TEXT, +`col9` INT, +`col10` REAL, +`col11` TINYINT, +`col12` NUMERIC, +`col13` NUMERIC, +`col14` TIME, +`col15` DOUBLE, +`col16` REAL, +`col17` MEDIUMBLOB, +`col18` YEAR, +`col19` TINYTEXT, +`col20` YEAR, +`col21` CHAR (250), +`col22` TINYINT, +`col23` TINYINT, +`col24` SMALLINT, +`col25` DATETIME, +`col26` MEDIUMINT, +`col27` LONGBLOB, +`col28` VARCHAR (106), +`col29` FLOAT, +`col30` MEDIUMTEXT, +`col31` TINYBLOB, +`col32` BIGINT, +`col33` YEAR, +`col34` REAL, +`col35` MEDIUMBLOB, +`col36` LONGTEXT, +`col37` LONGBLOB, +`col38` BIGINT, +`col39` FLOAT, +`col40` TIME, +`col41` DATETIME, +`col42` BOOL, +`col43` BIGINT, +`col44` SMALLINT, +`col45` TIME, +`col46` DOUBLE PRECISION, +`col47` TIME, +`col48` TINYTEXT, +`col49` DOUBLE PRECISION, +`col50` BIGINT, +`col51` NUMERIC, +`col52` TINYBLOB, +`col53` DATE, +`col54` DECIMAL, +`col55` SMALLINT, +`col56` TINYTEXT, +`col57` ENUM ('test1','test2','test3'), +`col58` YEAR, +`col59` TIME, +`col60` TINYINT, +`col61` DECIMAL, +`col62` DOUBLE, +`col63` DATE, +`col64` LONGTEXT, +`col65` DOUBLE, +`col66` VARCHAR (88), +`col67` MEDIUMTEXT, +`col68` DATE, +`col69` MEDIUMINT, +`col70` DECIMAL, +`col71` MEDIUMTEXT, +`col72` LONGTEXT, +`col73` REAL, +`col74` DOUBLE, +`col75` TIME, +`col76` DATE, +`col77` DECIMAL, +`col78` MEDIUMBLOB, +`col79` NUMERIC, +`col80` BIGINT, +`col81` YEAR, +`col82` SMALLINT, +`col83` MEDIUMINT, +`col84` TINYINT, +`col85` MEDIUMBLOB, +`col86` TIME, +`col87` MEDIUMBLOB, +`col88` LONGTEXT, +`col89` BOOL, +`col90` BLOB, +`col91` LONGBLOB, +`col92` YEAR, +`col93` BLOB, +`col94` INT, +`col95` TINYTEXT, +`col96` TINYINT, +`col97` DECIMAL, +`col98` ENUM ('test1','test2','test3'), +`col99` MEDIUMINT, +`col100` TINYINT, +`col101` MEDIUMBLOB, +`col102` TINYINT, +`col103` SET ('test1','test2','test3'), +`col104` TIMESTAMP, +`col105` TEXT, +`col106` DATETIME, +`col107` MEDIUMTEXT, +`col108` CHAR (220), +`col109` TIME, +`col110` VARCHAR (131), +`col111` DECIMAL, +`col112` FLOAT, +`col113` SMALLINT, +`col114` BIGINT, +`col115` LONGBLOB, +`col116` SET ('test1','test2','test3'), +`col117` ENUM ('test1','test2','test3'), +`col118` BLOB, +`col119` MEDIUMTEXT, +`col120` SET ('test1','test2','test3'), +`col121` DATETIME, +`col122` FLOAT, +`col123` VARCHAR (242), +`col124` YEAR, +`col125` MEDIUMBLOB, +`col126` TIME, +`col127` BOOL, +`col128` TINYBLOB, +`col129` DOUBLE, +`col130` TINYINT, +`col131` BIGINT, +`col132` SMALLINT, +`col133` INT, +`col134` DOUBLE PRECISION, +`col135` MEDIUMBLOB, +`col136` SET ('test1','test2','test3'), +`col137` TINYTEXT, +`col138` DOUBLE PRECISION, +`col139` NUMERIC, +`col140` BLOB, +`col141` SET ('test1','test2','test3'), +`col142` INT, +`col143` VARCHAR (26), +`col144` BLOB, +`col145` REAL, +`col146` SET ('test1','test2','test3'), +`col147` LONGBLOB, +`col148` TEXT, +`col149` BLOB, +`col150` CHAR (189), +`col151` LONGTEXT, +`col152` INT, +`col153` FLOAT, +`col154` LONGTEXT, +`col155` DATE, +`col156` LONGBLOB, +`col157` TINYBLOB, +`col158` REAL, +`col159` DATE, +`col160` TIME, +`col161` YEAR, +`col162` DOUBLE, +`col163` VARCHAR (90), +`col164` FLOAT, +`col165` NUMERIC, +`col166` ENUM ('test1','test2','test3'), +`col167` DOUBLE PRECISION, +`col168` DOUBLE PRECISION, +`col169` TINYBLOB, +`col170` TIME, +`col171` SMALLINT, +`col172` TINYTEXT, +`col173` SMALLINT, +`col174` DOUBLE, +`col175` VARCHAR (14), +`col176` VARCHAR (90), +`col177` REAL, +`col178` MEDIUMINT, +`col179` TINYBLOB, +`col180` FLOAT, +`col181` TIMESTAMP, +`col182` REAL, +`col183` DOUBLE PRECISION, +`col184` BIGINT, +`col185` INT, +`col186` MEDIUMTEXT, +`col187` TIME, +`col188` FLOAT, +`col189` TIME, +`col190` INT, +`col191` FLOAT, +`col192` MEDIUMINT, +`col193` TINYINT, +`col194` MEDIUMTEXT, +`col195` DATE, +`col196` TIME, +`col197` YEAR, +`col198` CHAR (206), +KEY `idx0` (`col39`,`col23`) +)engine=innodb ROW_FORMAT=COMPRESSED KEY_BLOCK_SIZE=1; + +# Creating a table with 133 columns and 16 indexes +DROP TABLE IF EXISTS `table4`; +--error ER_TOO_BIG_ROWSIZE +CREATE TABLE IF NOT EXISTS `table4` +(`col0` VARCHAR (60), +`col1` NUMERIC, +`col2` LONGTEXT, +`col3` MEDIUMTEXT, +`col4` LONGTEXT, +`col5` LONGBLOB, +`col6` LONGBLOB, +`col7` DATETIME, +`col8` TINYTEXT, +`col9` BLOB, +`col10` BOOL, +`col11` BIGINT, +`col12` TEXT, +`col13` VARCHAR (213), +`col14` TINYBLOB, +`col15` BOOL, +`col16` MEDIUMTEXT, +`col17` DOUBLE, +`col18` TEXT, +`col19` BLOB, +`col20` SET ('test1','test2','test3'), +`col21` TINYINT, +`col22` DATETIME, +`col23` TINYINT, +`col24` ENUM ('test1','test2','test3'), +`col25` REAL, +`col26` BOOL, +`col27` FLOAT, +`col28` LONGBLOB, +`col29` DATETIME, +`col30` FLOAT, +`col31` SET ('test1','test2','test3'), +`col32` LONGBLOB, +`col33` NUMERIC, +`col34` YEAR, +`col35` VARCHAR (146), +`col36` BIGINT, +`col37` DATETIME, +`col38` DATE, +`col39` SET ('test1','test2','test3'), +`col40` CHAR (112), +`col41` FLOAT, +`col42` YEAR, +`col43` TIME, +`col44` DOUBLE, +`col45` NUMERIC, +`col46` FLOAT, +`col47` DECIMAL, +`col48` BIGINT, +`col49` DECIMAL, +`col50` YEAR, +`col51` MEDIUMTEXT, +`col52` LONGBLOB, +`col53` SET ('test1','test2','test3'), +`col54` BLOB, +`col55` FLOAT, +`col56` REAL, +`col57` REAL, +`col58` TEXT, +`col59` MEDIUMBLOB, +`col60` INT, +`col61` INT, +`col62` DATE, +`col63` TEXT, +`col64` DATE, +`col65` ENUM ('test1','test2','test3'), +`col66` DOUBLE PRECISION, +`col67` TINYTEXT, +`col68` TINYBLOB, +`col69` FLOAT, +`col70` BLOB, +`col71` DATETIME, +`col72` DOUBLE, +`col73` LONGTEXT, +`col74` TIME, +`col75` DATETIME, +`col76` VARCHAR (122), +`col77` MEDIUMTEXT, +`col78` MEDIUMTEXT, +`col79` BOOL, +`col80` LONGTEXT, +`col81` TINYTEXT, +`col82` NUMERIC, +`col83` DOUBLE PRECISION, +`col84` DATE, +`col85` YEAR, +`col86` BLOB, +`col87` TINYTEXT, +`col88` DOUBLE PRECISION, +`col89` MEDIUMINT, +`col90` MEDIUMTEXT, +`col91` NUMERIC, +`col92` DATETIME, +`col93` NUMERIC, +`col94` SET ('test1','test2','test3'), +`col95` TINYTEXT, +`col96` SET ('test1','test2','test3'), +`col97` YEAR, +`col98` MEDIUMINT, +`col99` TEXT, +`col100` TEXT, +`col101` TIME, +`col102` VARCHAR (225), +`col103` TINYTEXT, +`col104` TEXT, +`col105` MEDIUMTEXT, +`col106` TINYINT, +`col107` TEXT, +`col108` LONGBLOB, +`col109` LONGTEXT, +`col110` TINYTEXT, +`col111` CHAR (56), +`col112` YEAR, +`col113` ENUM ('test1','test2','test3'), +`col114` TINYBLOB, +`col115` DATETIME, +`col116` DATE, +`col117` TIME, +`col118` MEDIUMTEXT, +`col119` DOUBLE PRECISION, +`col120` FLOAT, +`col121` TIMESTAMP, +`col122` MEDIUMINT, +`col123` YEAR, +`col124` DATE, +`col125` TEXT, +`col126` FLOAT, +`col127` TINYTEXT, +`col128` BOOL, +`col129` NUMERIC, +`col130` TIMESTAMP, +`col131` INT, +`col132` MEDIUMBLOB, +KEY `idx0` (`col130`), +KEY `idx1` (`col30`,`col55`,`col19`(31)), +KEY `idx2` (`col104`(186)), +KEY `idx3` (`col131`), +KEY `idx4` (`col64`,`col93`,`col2`(11)), +KEY `idx5` (`col34`,`col121`,`col22`), +KEY `idx6` (`col33`,`col55`,`col83`), +KEY `idx7` (`col17`,`col87`(245),`col99`(17)), +KEY `idx8` (`col65`,`col120`), +KEY `idx9` (`col82`), +KEY `idx10` (`col9`(72)), +KEY `idx11` (`col88`), +KEY `idx12` (`col128`,`col9`(200),`col71`,`col66`), +KEY `idx13` (`col77`(126)), +KEY `idx14` (`col105`(26),`col13`,`col117`), +KEY `idx15` (`col4`(246),`col130`,`col115`,`col3`(141)) +)engine=innodb ROW_FORMAT=COMPRESSED KEY_BLOCK_SIZE=1; + +# Creating a table with 176 columns and 13 indexes +DROP TABLE IF EXISTS `table5`; +--error ER_TOO_BIG_ROWSIZE +CREATE TABLE IF NOT EXISTS `table5` +(`col0` MEDIUMTEXT, +`col1` VARCHAR (90), +`col2` TINYTEXT, +`col3` TIME, +`col4` BOOL, +`col5` TINYTEXT, +`col6` BOOL, +`col7` TIMESTAMP, +`col8` TINYBLOB, +`col9` TINYINT, +`col10` YEAR, +`col11` SET ('test1','test2','test3'), +`col12` TEXT, +`col13` CHAR (248), +`col14` BIGINT, +`col15` TEXT, +`col16` TINYINT, +`col17` NUMERIC, +`col18` SET ('test1','test2','test3'), +`col19` LONGBLOB, +`col20` FLOAT, +`col21` INT, +`col22` TEXT, +`col23` BOOL, +`col24` DECIMAL, +`col25` DOUBLE PRECISION, +`col26` FLOAT, +`col27` TINYBLOB, +`col28` NUMERIC, +`col29` MEDIUMBLOB, +`col30` DATE, +`col31` LONGTEXT, +`col32` DATE, +`col33` FLOAT, +`col34` BIGINT, +`col35` TINYTEXT, +`col36` MEDIUMTEXT, +`col37` TIME, +`col38` INT, +`col39` TINYINT, +`col40` SET ('test1','test2','test3'), +`col41` CHAR (130), +`col42` SMALLINT, +`col43` INT, +`col44` MEDIUMTEXT, +`col45` VARCHAR (126), +`col46` INT, +`col47` DOUBLE PRECISION, +`col48` BIGINT, +`col49` MEDIUMTEXT, +`col50` TINYBLOB, +`col51` MEDIUMINT, +`col52` TEXT, +`col53` VARCHAR (208), +`col54` VARCHAR (207), +`col55` NUMERIC, +`col56` DATETIME, +`col57` ENUM ('test1','test2','test3'), +`col58` NUMERIC, +`col59` TINYBLOB, +`col60` VARCHAR (73), +`col61` MEDIUMTEXT, +`col62` TINYBLOB, +`col63` DATETIME, +`col64` NUMERIC, +`col65` MEDIUMINT, +`col66` DATETIME, +`col67` NUMERIC, +`col68` TINYINT, +`col69` VARCHAR (58), +`col70` DECIMAL, +`col71` MEDIUMTEXT, +`col72` DATE, +`col73` TIME, +`col74` DOUBLE PRECISION, +`col75` DECIMAL, +`col76` MEDIUMBLOB, +`col77` REAL, +`col78` YEAR, +`col79` YEAR, +`col80` LONGBLOB, +`col81` BLOB, +`col82` BIGINT, +`col83` ENUM ('test1','test2','test3'), +`col84` NUMERIC, +`col85` SET ('test1','test2','test3'), +`col86` MEDIUMTEXT, +`col87` LONGBLOB, +`col88` TIME, +`col89` ENUM ('test1','test2','test3'), +`col90` DECIMAL, +`col91` FLOAT, +`col92` DATETIME, +`col93` TINYTEXT, +`col94` TIMESTAMP, +`col95` TIMESTAMP, +`col96` TEXT, +`col97` REAL, +`col98` VARCHAR (198), +`col99` TIME, +`col100` TINYINT, +`col101` BIGINT, +`col102` LONGBLOB, +`col103` LONGBLOB, +`col104` MEDIUMINT, +`col105` MEDIUMTEXT, +`col106` TIMESTAMP, +`col107` SMALLINT, +`col108` NUMERIC, +`col109` DECIMAL, +`col110` FLOAT, +`col111` DECIMAL, +`col112` REAL, +`col113` TINYTEXT, +`col114` FLOAT, +`col115` VARCHAR (7), +`col116` LONGTEXT, +`col117` DATE, +`col118` BIGINT, +`col119` TEXT, +`col120` BIGINT, +`col121` BLOB, +`col122` CHAR (110), +`col123` NUMERIC, +`col124` MEDIUMBLOB, +`col125` NUMERIC, +`col126` NUMERIC, +`col127` BOOL, +`col128` TIME, +`col129` TINYBLOB, +`col130` TINYBLOB, +`col131` DATE, +`col132` INT, +`col133` VARCHAR (123), +`col134` CHAR (238), +`col135` VARCHAR (225), +`col136` LONGTEXT, +`col137` LONGBLOB, +`col138` REAL, +`col139` TINYBLOB, +`col140` DATETIME, +`col141` TINYTEXT, +`col142` LONGBLOB, +`col143` BIGINT, +`col144` VARCHAR (236), +`col145` TEXT, +`col146` YEAR, +`col147` DECIMAL, +`col148` TEXT, +`col149` MEDIUMBLOB, +`col150` TINYINT, +`col151` BOOL, +`col152` VARCHAR (72), +`col153` INT, +`col154` VARCHAR (165), +`col155` TINYINT, +`col156` MEDIUMTEXT, +`col157` DOUBLE PRECISION, +`col158` TIME, +`col159` MEDIUMBLOB, +`col160` LONGBLOB, +`col161` DATETIME, +`col162` DOUBLE PRECISION, +`col163` BLOB, +`col164` ENUM ('test1','test2','test3'), +`col165` TIMESTAMP, +`col166` DATE, +`col167` TINYBLOB, +`col168` TINYBLOB, +`col169` LONGBLOB, +`col170` DATETIME, +`col171` BIGINT, +`col172` VARCHAR (30), +`col173` LONGTEXT, +`col174` TIME, +`col175` FLOAT, +KEY `idx0` (`col16`,`col156`(139),`col97`,`col120`), +KEY `idx1` (`col24`,`col0`(108)), +KEY `idx2` (`col117`,`col173`(34),`col132`,`col82`), +KEY `idx3` (`col2`(86)), +KEY `idx4` (`col2`(43)), +KEY `idx5` (`col83`,`col35`(87),`col111`), +KEY `idx6` (`col6`,`col134`,`col92`), +KEY `idx7` (`col56`), +KEY `idx8` (`col30`,`col53`,`col129`(66)), +KEY `idx9` (`col53`,`col113`(211),`col32`,`col15`(75)), +KEY `idx10` (`col34`), +KEY `idx11` (`col126`), +KEY `idx12` (`col24`) +)engine=innodb ROW_FORMAT=COMPRESSED KEY_BLOCK_SIZE=1; + +# Creating a table with 179 columns and 46 indexes +DROP TABLE IF EXISTS `table6`; +-- error ER_TOO_BIG_ROWSIZE +--error ER_TOO_BIG_ROWSIZE +CREATE TABLE IF NOT EXISTS `table6` +(`col0` ENUM ('test1','test2','test3'), +`col1` MEDIUMBLOB, +`col2` MEDIUMBLOB, +`col3` DATETIME, +`col4` DATE, +`col5` YEAR, +`col6` REAL, +`col7` NUMERIC, +`col8` MEDIUMBLOB, +`col9` TEXT, +`col10` TIMESTAMP, +`col11` DOUBLE, +`col12` DOUBLE, +`col13` SMALLINT, +`col14` TIMESTAMP, +`col15` DECIMAL, +`col16` DATE, +`col17` TEXT, +`col18` LONGBLOB, +`col19` BIGINT, +`col20` FLOAT, +`col21` DATETIME, +`col22` TINYINT, +`col23` MEDIUMBLOB, +`col24` SET ('test1','test2','test3'), +`col25` TIME, +`col26` TEXT, +`col27` LONGTEXT, +`col28` BIGINT, +`col29` REAL, +`col30` YEAR, +`col31` MEDIUMBLOB, +`col32` MEDIUMINT, +`col33` FLOAT, +`col34` TEXT, +`col35` DATE, +`col36` TIMESTAMP, +`col37` REAL, +`col38` BLOB, +`col39` BLOB, +`col40` BLOB, +`col41` TINYBLOB, +`col42` INT, +`col43` TINYINT, +`col44` REAL, +`col45` BIGINT, +`col46` TIMESTAMP, +`col47` BLOB, +`col48` ENUM ('test1','test2','test3'), +`col49` BOOL, +`col50` CHAR (109), +`col51` DOUBLE, +`col52` DOUBLE PRECISION, +`col53` ENUM ('test1','test2','test3'), +`col54` FLOAT, +`col55` DOUBLE PRECISION, +`col56` CHAR (166), +`col57` TEXT, +`col58` TIME, +`col59` DECIMAL, +`col60` TEXT, +`col61` ENUM ('test1','test2','test3'), +`col62` LONGTEXT, +`col63` YEAR, +`col64` DOUBLE, +`col65` CHAR (87), +`col66` DATE, +`col67` BOOL, +`col68` MEDIUMBLOB, +`col69` DATETIME, +`col70` DECIMAL, +`col71` TIME, +`col72` REAL, +`col73` LONGTEXT, +`col74` BLOB, +`col75` REAL, +`col76` INT, +`col77` INT, +`col78` FLOAT, +`col79` DOUBLE, +`col80` MEDIUMINT, +`col81` ENUM ('test1','test2','test3'), +`col82` VARCHAR (221), +`col83` BIGINT, +`col84` TINYINT, +`col85` BIGINT, +`col86` FLOAT, +`col87` MEDIUMBLOB, +`col88` CHAR (126), +`col89` MEDIUMBLOB, +`col90` DATETIME, +`col91` TINYINT, +`col92` DOUBLE, +`col93` NUMERIC, +`col94` DATE, +`col95` BLOB, +`col96` DATETIME, +`col97` TIME, +`col98` LONGBLOB, +`col99` INT, +`col100` SET ('test1','test2','test3'), +`col101` TINYBLOB, +`col102` INT, +`col103` MEDIUMBLOB, +`col104` MEDIUMTEXT, +`col105` FLOAT, +`col106` TINYBLOB, +`col107` VARCHAR (26), +`col108` TINYINT, +`col109` TIME, +`col110` TINYBLOB, +`col111` LONGBLOB, +`col112` TINYTEXT, +`col113` FLOAT, +`col114` TINYINT, +`col115` NUMERIC, +`col116` TIME, +`col117` SET ('test1','test2','test3'), +`col118` DATE, +`col119` SMALLINT, +`col120` BLOB, +`col121` TINYTEXT, +`col122` REAL, +`col123` YEAR, +`col124` REAL, +`col125` BOOL, +`col126` BLOB, +`col127` REAL, +`col128` MEDIUMBLOB, +`col129` TIMESTAMP, +`col130` LONGBLOB, +`col131` MEDIUMBLOB, +`col132` YEAR, +`col133` YEAR, +`col134` INT, +`col135` MEDIUMINT, +`col136` MEDIUMINT, +`col137` TINYTEXT, +`col138` TINYBLOB, +`col139` BLOB, +`col140` SET ('test1','test2','test3'), +`col141` ENUM ('test1','test2','test3'), +`col142` ENUM ('test1','test2','test3'), +`col143` TINYTEXT, +`col144` DATETIME, +`col145` TEXT, +`col146` DOUBLE PRECISION, +`col147` DECIMAL, +`col148` MEDIUMTEXT, +`col149` TINYTEXT, +`col150` SET ('test1','test2','test3'), +`col151` MEDIUMTEXT, +`col152` CHAR (126), +`col153` DOUBLE, +`col154` CHAR (243), +`col155` SET ('test1','test2','test3'), +`col156` SET ('test1','test2','test3'), +`col157` DATETIME, +`col158` DOUBLE, +`col159` NUMERIC, +`col160` DECIMAL, +`col161` FLOAT, +`col162` LONGBLOB, +`col163` LONGTEXT, +`col164` INT, +`col165` TIME, +`col166` CHAR (27), +`col167` VARCHAR (63), +`col168` TEXT, +`col169` TINYBLOB, +`col170` TINYBLOB, +`col171` ENUM ('test1','test2','test3'), +`col172` INT, +`col173` TIME, +`col174` DECIMAL, +`col175` DOUBLE, +`col176` MEDIUMBLOB, +`col177` LONGBLOB, +`col178` CHAR (43), +KEY `idx0` (`col131`(219)), +KEY `idx1` (`col67`,`col122`,`col59`,`col87`(33)), +KEY `idx2` (`col83`,`col42`,`col57`(152)), +KEY `idx3` (`col106`(124)), +KEY `idx4` (`col173`,`col80`,`col165`,`col89`(78)), +KEY `idx5` (`col174`,`col145`(108),`col23`(228),`col141`), +KEY `idx6` (`col157`,`col140`), +KEY `idx7` (`col130`(188),`col15`), +KEY `idx8` (`col52`), +KEY `idx9` (`col144`), +KEY `idx10` (`col155`), +KEY `idx11` (`col62`(230),`col1`(109)), +KEY `idx12` (`col151`(24),`col95`(85)), +KEY `idx13` (`col114`), +KEY `idx14` (`col42`,`col98`(56),`col146`), +KEY `idx15` (`col147`,`col39`(254),`col35`), +KEY `idx16` (`col79`), +KEY `idx17` (`col65`), +KEY `idx18` (`col149`(165),`col168`(119),`col32`,`col117`), +KEY `idx19` (`col64`), +KEY `idx20` (`col93`), +KEY `idx21` (`col64`,`col113`,`col104`(182)), +KEY `idx22` (`col52`,`col111`(189)), +KEY `idx23` (`col45`), +KEY `idx24` (`col154`,`col107`,`col110`(159)), +KEY `idx25` (`col149`(1),`col87`(131)), +KEY `idx26` (`col58`,`col115`,`col63`), +KEY `idx27` (`col95`(9),`col0`,`col87`(113)), +KEY `idx28` (`col92`,`col130`(1)), +KEY `idx29` (`col151`(129),`col137`(254),`col13`), +KEY `idx30` (`col49`), +KEY `idx31` (`col28`), +KEY `idx32` (`col83`,`col146`), +KEY `idx33` (`col155`,`col90`,`col17`(245)), +KEY `idx34` (`col174`,`col169`(44),`col107`), +KEY `idx35` (`col113`), +KEY `idx36` (`col52`), +KEY `idx37` (`col16`,`col120`(190)), +KEY `idx38` (`col28`), +KEY `idx39` (`col131`(165)), +KEY `idx40` (`col135`,`col26`(86)), +KEY `idx41` (`col69`,`col94`), +KEY `idx42` (`col105`,`col151`(38),`col97`), +KEY `idx43` (`col88`), +KEY `idx44` (`col176`(100),`col42`,`col73`(189),`col94`), +KEY `idx45` (`col2`(27),`col27`(116)) +)engine=innodb ROW_FORMAT=COMPRESSED KEY_BLOCK_SIZE=1; + +SET GLOBAL innodb_file_format=@save_innodb_file_format; +SET GLOBAL innodb_file_format_check=@save_innodb_file_format_check; +SET GLOBAL innodb_file_per_table=@save_innodb_file_per_table; + +DROP TABLE IF EXISTS table0; +DROP TABLE IF EXISTS table1; +DROP TABLE IF EXISTS table2; +DROP TABLE IF EXISTS table3; +DROP TABLE IF EXISTS table4; +DROP TABLE IF EXISTS table5; +DROP TABLE IF EXISTS table6; + === added file 'mysql-test/t/innodb_bug36172.test' --- a/mysql-test/t/innodb_bug36172.test 1970-01-01 00:00:00 +0000 +++ b/mysql-test/t/innodb_bug36172.test 2009-06-11 12:53:26 +0000 @@ -0,0 +1,33 @@ +# +# Test case for bug 36172 +# + +-- source include/not_embedded.inc +-- source include/have_innodb.inc + +SET storage_engine=InnoDB; + +# we do not really care about what gets printed, we are only +# interested in getting success or failure according to our +# expectations + +-- disable_query_log +-- disable_result_log + +SET @save_innodb_file_format=@@global.innodb_file_format; +SET @save_innodb_file_format_check=@@global.innodb_file_format_check; +SET @save_innodb_file_per_table=@@global.innodb_file_per_table; +SET GLOBAL innodb_file_format='Barracuda'; +SET GLOBAL innodb_file_per_table=on; + +DROP TABLE IF EXISTS `table0`; +CREATE TABLE `table0` ( `col0` tinyint(1) DEFAULT NULL, `col1` tinyint(1) DEFAULT NULL, `col2` tinyint(4) DEFAULT NULL, `col3` date DEFAULT NULL, `col4` time DEFAULT NULL, `col5` set('test1','test2','test3') DEFAULT NULL, `col6` time DEFAULT NULL, `col7` text, `col8` decimal(10,0) DEFAULT NULL, `col9` set('test1','test2','test3') DEFAULT NULL, `col10` float DEFAULT NULL, `col11` double DEFAULT NULL, `col12` enum('test1','test2','test3') DEFAULT NULL, `col13` tinyblob, `col14` year(4) DEFAULT NULL, `col15` set('test1','test2','test3') DEFAULT NULL, `col16` decimal(10,0) DEFAULT NULL, `col17` decimal(10,0) DEFAULT NULL, `col18` blob, `col19` datetime DEFAULT NULL, `col20` double DEFAULT NULL, `col21` decimal(10,0) DEFAULT NULL, `col22` datetime DEFAULT NULL, `col23` decimal(10,0) DEFAULT NULL, `col24` decimal(10,0) DEFAULT NULL, `col25` longtext, `col26` tinyblob, `col27` time DEFAULT NULL, `col28` tinyblob, `col29` enum('test1','test2','test3') DEFAULT NULL, `col30` smallint(6) DEFAULT NULL, `col31` double DEFAULT NULL, `col32` float DEFAULT NULL, `col33` char(175) DEFAULT NULL, `col34` tinytext, `col35` tinytext, `col36` tinyblob, `col37` tinyblob, `col38` tinytext, `col39` mediumblob, `col40` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP, `col41` double DEFAULT NULL, `col42` smallint(6) DEFAULT NULL, `col43` longblob, `col44` varchar(80) DEFAULT NULL, `col45` mediumtext, `col46` decimal(10,0) DEFAULT NULL, `col47` bigint(20) DEFAULT NULL, `col48` date DEFAULT NULL, `col49` tinyblob, `col50` date DEFAULT NULL, `col51` tinyint(1) DEFAULT NULL, `col52` mediumint(9) DEFAULT NULL, `col53` float DEFAULT NULL, `col54` tinyblob, `col55` longtext, `col56` smallint(6) DEFAULT NULL, `col57` enum('test1','test2','test3') DEFAULT NULL, `col58` datetime DEFAULT NULL, `col59` mediumtext, `col60` varchar(232) DEFAULT NULL, `col61` decimal(10,0) DEFAULT NULL, `col62` year(4) DEFAULT NULL, `col63` smallint(6) DEFAULT NULL, `col64` timestamp NOT NULL DEFAULT '0000-00-00 00:00:00', `col65` blob, `col66` longblob, `col67` int(11) DEFAULT NULL, `col68` longtext, `col69` enum('test1','test2','test3') DEFAULT NULL, `col70` int(11) DEFAULT NULL, `col71` time DEFAULT NULL, `col72` timestamp NOT NULL DEFAULT '0000-00-00 00:00:00', `col73` timestamp NOT NULL DEFAULT '0000-00-00 00:00:00', `col74` varchar(170) DEFAULT NULL, `col75` set('test1','test2','test3') DEFAULT NULL, `col76` tinyblob, `col77` bigint(20) DEFAULT NULL, `col78` decimal(10,0) DEFAULT NULL, `col79` datetime DEFAULT NULL, `col80` year(4) DEFAULT NULL, `col81` decimal(10,0) DEFAULT NULL, `col82` longblob, `col83` text, `col84` char(83) DEFAULT NULL, `col85` decimal(10,0) DEFAULT NULL, `col86` float DEFAULT NULL, `col87` int(11) DEFAULT NULL, `col88` varchar(145) DEFAULT NULL, `col89` date DEFAULT NULL, `col90` decimal(10,0) DEFAULT NULL, `col91` decimal(10,0) DEFAULT NULL, `col92` mediumblob, `col93` time DEFAULT NULL, KEY `idx0` (`col69`,`col90`,`col8`), KEY `idx1` (`col60`), KEY `idx2` (`col60`,`col70`,`col74`), KEY `idx3` (`col22`,`col32`,`col72`,`col30`), KEY `idx4` (`col29`), KEY `idx5` (`col19`,`col45`(143)), KEY `idx6` (`col46`,`col48`,`col5`,`col39`(118)), KEY `idx7` (`col48`,`col61`), KEY `idx8` (`col93`), KEY `idx9` (`col31`), KEY `idx10` (`col30`,`col21`), KEY `idx11` (`col67`), KEY `idx12` (`col44`,`col6`,`col8`,`col38`(226)), KEY `idx13` (`col71`,`col41`,`col15`,`col49`(88)), KEY `idx14` (`col78`), KEY `idx15` (`col63`,`col67`,`col64`), KEY `idx16` (`col17`,`col86`), KEY `idx17` (`col77`,`col56`,`col10`,`col55`(24)), KEY `idx18` (`col62`), KEY `idx19` (`col31`,`col57`,`col56`,`col53`), KEY `idx20` (`col46`), KEY `idx21` (`col83`(54)), KEY `idx22` (`col51`,`col7`(120)), KEY `idx23` (`col7`(163),`col31`,`col71`,`col14`) ) ENGINE=InnoDB DEFAULT CHARSET=latin1 ROW_FORMAT=COMPRESSED KEY_BLOCK_SIZE=2; +insert ignore into `table0` set `col23` = 7887371.5084383683, `col24` = 4293854615.6906948000, `col25` = 'vitalist', `col26` = 'widespread', `col27` = '3570490', `col28` = 'habitual', `col30` = -5471, `col31` = 4286985783.6771750000, `col32` = 6354540.9826654866, `col33` = 'defoliation', `col34` = 'logarithms', `col35` = 'tegument\'s', `col36` = 'scouting\'s', `col37` = 'intermittency', `col38` = 'elongates', `col39` = 'prophecies', `col40` = '20560103035939', `col41` = 4292809130.0544143000, `col42` = 22057, `col43` = 'Hess\'s', `col44` = 'bandstand', `col45` = 'phenylketonuria', `col46` = 6338767.4018677324, `col47` = 5310247, `col48` = '12592418', `col49` = 'churchman\'s', `col50` = '32226125', `col51` = -58, `col52` = -6207968, `col53` = 1244839.3255104220, `col54` = 'robotized', `col55` = 'monotonous', `col56` = -26909, `col58` = '20720107023550', `col59` = 'suggestiveness\'s', `col60` = 'gemology', `col61` = 4287800670.2229986000, `col62` = '1944', `col63` = -16827, `col64` = '20700107212324', `col65` = 'Nicolais', `col66` = 'apteryx', `col67` = 6935317, `col68` = 'stroganoff', `col70` = 3316430, `col71` = '3277608', `col72` = '19300511045918', `col73` = '20421201003327', `col74` = 'attenuant', `col75` = '15173', `col76` = 'upstroke\'s', `col77` = 8118987, `col78` = 6791516.2735374002, `col79` = '20780701144624', `col80` = '2134', `col81` = 4290682351.3127537000, `col82` = 'unexplainably', `col83` = 'Storm', `col84` = 'Greyso\'s', `col85` = 4289119212.4306774000, `col86` = 7617575.8796655172, `col87` = -6325335, `col88` = 'fondue\'s', `col89` = '40608940', `col90` = 1659421.8093508712, `col91` = 8346904.6584368423, `col92` = 'reloads', `col93` = '5188366'; +CHECK TABLE table0 EXTENDED; +INSERT IGNORE INTO `table0` SET `col19` = '19940127002709', `col20` = 2383927.9055146948, `col21` = 4293243420.5621204000, `col22` = '20511211123705', `col23` = 4289899778.6573381000, `col24` = 4293449279.0540481000, `col25` = 'emphysemic', `col26` = 'dentally', `col27` = '2347406', `col28` = 'eruct', `col30` = 1222, `col31` = 4294372994.9941406000, `col32` = 4291385574.1173744000, `col33` = 'borrowing\'s', `col34` = 'septics', `col35` = 'ratter\'s', `col36` = 'Kaye', `col37` = 'Florentia', `col38` = 'allium', `col39` = 'barkeep', `col40` = '19510407003441', `col41` = 4293559200.4215522000, `col42` = 22482, `col43` = 'decussate', `col44` = 'Brom\'s', `col45` = 'violated', `col46` = 4925506.4635456400, `col47` = 930549, `col48` = '51296066', `col49` = 'voluminously', `col50` = '29306676', `col51` = -88, `col52` = -2153690, `col53` = 4290250202.1464887000, `col54` = 'expropriation', `col55` = 'Aberdeen\'s', `col56` = 20343, `col58` = '19640415171532', `col59` = 'extern', `col60` = 'Ubana', `col61` = 4290487961.8539081000, `col62` = '2147', `col63` = -24271, `col64` = '20750801194548', `col65` = 'Cunaxa\'s', `col66` = 'pasticcio', `col67` = 2795817, `col68` = 'Indore\'s', `col70` = 6864127, `col71` = '1817832', `col72` = '20540506114211', `col73` = '20040101012300', `col74` = 'rationalized', `col75` = '45522', `col76` = 'indene', `col77` = -6964559, `col78` = 4247535.5266884370, `col79` = '20720416124357', `col80` = '2143', `col81` = 4292060102.4466386000, `col82` = 'striving', `col83` = 'boneblack\'s', `col84` = 'redolent', `col85` = 6489697.9009369183, `col86` = 4287473465.9731131000, `col87` = 7726015, `col88` = 'perplexed', `col89` = '17153791', `col90` = 5478587.1108127078, `col91` = 4287091404.7004304000, `col92` = 'Boulez\'s', `col93` = '2931278'; +CHECK TABLE table0 EXTENDED; + +SET GLOBAL innodb_file_format=@save_innodb_file_format; +SET GLOBAL innodb_file_format_check=@save_innodb_file_format_check; +SET GLOBAL innodb_file_per_table=@save_innodb_file_per_table; +DROP TABLE table0; === added file 'mysql-test/t/innodb_bug40360.test' --- a/mysql-test/t/innodb_bug40360.test 1970-01-01 00:00:00 +0000 +++ b/mysql-test/t/innodb_bug40360.test 2009-06-09 13:19:13 +0000 @@ -0,0 +1,16 @@ +# +# Make sure http://bugs.mysql.com/40360 remains fixed. +# + +-- source include/not_embedded.inc +-- source include/have_innodb.inc + +SET TX_ISOLATION='READ-COMMITTED'; + +# This is the default since MySQL 5.1.29 SET BINLOG_FORMAT='STATEMENT'; + +CREATE TABLE bug40360 (a INT) engine=innodb; + +INSERT INTO bug40360 VALUES (1); + +DROP TABLE bug40360; === added file 'mysql-test/t/innodb_bug41904.test' --- a/mysql-test/t/innodb_bug41904.test 1970-01-01 00:00:00 +0000 +++ b/mysql-test/t/innodb_bug41904.test 2009-06-09 13:19:13 +0000 @@ -0,0 +1,14 @@ +# +# Make sure http://bugs.mysql.com/41904 remains fixed. +# + +-- source include/not_embedded.inc +-- source include/have_innodb.inc + +CREATE TABLE bug41904 (id INT PRIMARY KEY, uniquecol CHAR(15)) ENGINE=InnoDB; + +INSERT INTO bug41904 VALUES (1,NULL), (2,NULL); + +CREATE UNIQUE INDEX ui ON bug41904 (uniquecol); + +DROP TABLE bug41904; === added file 'mysql-test/t/innodb_information_schema.test' --- a/mysql-test/t/innodb_information_schema.test 1970-01-01 00:00:00 +0000 +++ b/mysql-test/t/innodb_information_schema.test 2009-06-09 13:19:13 +0000 @@ -0,0 +1,145 @@ +# +# Test that user data is correctly "visualized" in +# INFORMATION_SCHEMA.innodb_locks.lock_data +# + +-- source include/have_innodb.inc + +-- disable_query_log +-- disable_result_log + +SET storage_engine=InnoDB; + +-- disable_warnings +DROP TABLE IF EXISTS t_min, t_max; +-- enable_warnings + +let $table_def = +( + c01 TINYINT, + c02 TINYINT UNSIGNED, + c03 SMALLINT, + c04 SMALLINT UNSIGNED, + c05 MEDIUMINT, + c06 MEDIUMINT UNSIGNED, + c07 INT, + c08 INT UNSIGNED, + c09 BIGINT, + c10 BIGINT UNSIGNED, + PRIMARY KEY(c01, c02, c03, c04, c05, c06, c07, c08, c09, c10) +); + +-- eval CREATE TABLE t_min $table_def; +INSERT INTO t_min VALUES +(-128, 0, + -32768, 0, + -8388608, 0, + -2147483648, 0, + -9223372036854775808, 0); + +-- eval CREATE TABLE t_max $table_def; +INSERT INTO t_max VALUES +(127, 255, + 32767, 65535, + 8388607, 16777215, + 2147483647, 4294967295, + 9223372036854775807, 18446744073709551615); + +CREATE TABLE ```t'\"_str` ( + c1 VARCHAR(32), + c2 VARCHAR(32), + c3 VARCHAR(32), + c4 VARCHAR(32), + c5 VARCHAR(32), + c6 VARCHAR(32), + c7 VARCHAR(32), + PRIMARY KEY(c1, c2, c3, c4, c5, c6, c7) +); +INSERT INTO ```t'\"_str` VALUES +('1', 'abc', '''abc', 'abc''', 'a''bc', 'a''bc''', '''abc'''''); +INSERT INTO ```t'\"_str` VALUES +('2', 'abc', '"abc', 'abc"', 'a"bc', 'a"bc"', '"abc""'); +INSERT INTO ```t'\"_str` VALUES +('3', 'abc', '\\abc', 'abc\\', 'a\\bc', 'a\\bc\\', '\\abc\\\\'); +INSERT INTO ```t'\"_str` VALUES +('4', 'abc', 0x00616263, 0x61626300, 0x61006263, 0x6100626300, 0x610062630000); + +-- connect (con_lock,localhost,root,,) +-- connect (con_min_trylock,localhost,root,,) +-- connect (con_max_trylock,localhost,root,,) +-- connect (con_str_insert_supremum,localhost,root,,) +-- connect (con_str_lock_row1,localhost,root,,) +-- connect (con_str_lock_row2,localhost,root,,) +-- connect (con_str_lock_row3,localhost,root,,) +-- connect (con_str_lock_row4,localhost,root,,) +-- connect (con_verify_innodb_locks,localhost,root,,) + +-- connection con_lock +SET autocommit=0; +SELECT * FROM t_min FOR UPDATE; +SELECT * FROM t_max FOR UPDATE; +SELECT * FROM ```t'\"_str` FOR UPDATE; + +-- connection con_min_trylock +-- send +SELECT * FROM t_min FOR UPDATE; + +-- connection con_max_trylock +-- send +SELECT * FROM t_max FOR UPDATE; + +-- connection con_str_insert_supremum +-- send +INSERT INTO ```t'\"_str` VALUES +('z', 'z', 'z', 'z', 'z', 'z', 'z'); + +-- connection con_str_lock_row1 +-- send +SELECT * FROM ```t'\"_str` WHERE c1 = '1' FOR UPDATE; + +-- connection con_str_lock_row2 +-- send +SELECT * FROM ```t'\"_str` WHERE c1 = '2' FOR UPDATE; + +-- connection con_str_lock_row3 +-- send +SELECT * FROM ```t'\"_str` WHERE c1 = '3' FOR UPDATE; + +-- connection con_str_lock_row4 +-- send +SELECT * FROM ```t'\"_str` WHERE c1 = '4' FOR UPDATE; + +# Give time to the above 2 queries to execute before continuing. +# Without this sleep it sometimes happens that the SELECT from innodb_locks +# executes before some of them, resulting in less than expected number +# of rows being selected from innodb_locks. +-- sleep 0.1 + +-- enable_result_log +-- connection con_verify_innodb_locks +SELECT lock_mode, lock_type, lock_table, lock_index, lock_rec, lock_data +FROM INFORMATION_SCHEMA.INNODB_LOCKS ORDER BY lock_data; + +SELECT lock_table,COUNT(*) FROM INFORMATION_SCHEMA.INNODB_LOCKS +GROUP BY lock_table; + +set @save_sql_mode = @@sql_mode; +SET SQL_MODE='ANSI_QUOTES'; +SELECT lock_table,COUNT(*) FROM INFORMATION_SCHEMA.INNODB_LOCKS +GROUP BY lock_table; +SET @@sql_mode=@save_sql_mode; +-- disable_result_log + +-- connection default + +-- disconnect con_lock +-- disconnect con_min_trylock +-- disconnect con_max_trylock +-- disconnect con_str_insert_supremum +-- disconnect con_str_lock_row1 +-- disconnect con_str_lock_row2 +-- disconnect con_str_lock_row3 +-- disconnect con_str_lock_row4 +-- disconnect con_verify_innodb_locks + +DROP TABLE t_min, t_max, ```t'\"_str`; === added file 'mysql-test/t/innodb_trx_weight.test' --- a/mysql-test/t/innodb_trx_weight.test 1970-01-01 00:00:00 +0000 +++ b/mysql-test/t/innodb_trx_weight.test 2009-06-09 13:19:13 +0000 @@ -0,0 +1,108 @@ +# +# Ensure that the number of locks (SELECT FOR UPDATE for example) is +# added to the number of altered rows when choosing the smallest +# transaction to kill as a victim when a deadlock is detected. +# Also transactions what had edited non-transactional tables should +# be heavier than ones that had not. +# + +-- source include/have_innodb.inc + +SET storage_engine=InnoDB; + +# we do not really care about what gets printed, we are only +# interested in getting the deadlock resolved according to our +# expectations +-- disable_query_log +-- disable_result_log + +# we want to use "-- eval statement1; statement2" which does not work with +# prepared statements. Because this test should not behave differently with +# or without prepared statements we disable them so the test does not fail +# if someone runs ./mysql-test-run.pl --ps-protocol +-- disable_ps_protocol + +-- disable_warnings +DROP TABLE IF EXISTS t1, t2, t3, t4, t5_nontrans; +-- enable_warnings + +# we will create a simple deadlock with t1, t2 and two connections +CREATE TABLE t1 (a INT); +CREATE TABLE t2 (a INT); + +# auxiliary table with a bulk of rows which will be locked by a +# transaction to increase its weight +CREATE TABLE t3 (a INT); + +# auxiliary empty table which will be inserted by a +# transaction to increase its weight +CREATE TABLE t4 (a INT); + +# auxiliary non-transactional table which will be edited by a +# transaction to tremendously increase its weight +CREATE TABLE t5_nontrans (a INT) ENGINE=MyISAM; + +INSERT INTO t1 VALUES (1); +INSERT INTO t2 VALUES (1); +# insert a lot of rows in t3 +INSERT INTO t3 VALUES (1); +INSERT INTO t3 SELECT * FROM t3; +INSERT INTO t3 SELECT * FROM t3; +INSERT INTO t3 SELECT * FROM t3; +INSERT INTO t3 SELECT * FROM t3; +INSERT INTO t3 SELECT * FROM t3; +INSERT INTO t3 SELECT * FROM t3; +INSERT INTO t3 SELECT * FROM t3; +INSERT INTO t3 SELECT * FROM t3; +INSERT INTO t3 SELECT * FROM t3; +INSERT INTO t3 SELECT * FROM t3; +INSERT INTO t3 SELECT * FROM t3; + +# test locking weight + +-- let $con1_extra_sql = +-- let $con1_extra_sql_present = 0 +-- let $con2_extra_sql = SELECT * FROM t3 FOR UPDATE +-- let $con2_extra_sql_present = 1 +-- let $con1_should_be_rolledback = 1 +-- source include/innodb_trx_weight.inc + +-- let $con1_extra_sql = INSERT INTO t4 VALUES (1), (1) +-- let $con1_extra_sql_present = 1 +-- let $con2_extra_sql = SELECT * FROM t3 FOR UPDATE +-- let $con2_extra_sql_present = 1 +-- let $con1_should_be_rolledback = 1 +-- source include/innodb_trx_weight.inc + +-- let $con1_extra_sql = INSERT INTO t4 VALUES (1), (1), (1), (1), (1), (1) +-- let $con1_extra_sql_present = 1 +-- let $con2_extra_sql = SELECT * FROM t3 FOR UPDATE +-- let $con2_extra_sql_present = 1 +-- let $con1_should_be_rolledback = 0 +-- source include/innodb_trx_weight.inc + +# test weight when non-transactional tables are edited + +-- let $con1_extra_sql = INSERT INTO t4 VALUES (1), (1), (1) +-- let $con1_extra_sql_present = 1 +-- let $con2_extra_sql = +-- let $con2_extra_sql_present = 0 +-- let $con1_should_be_rolledback = 0 +-- source include/innodb_trx_weight.inc + +-- let $con1_extra_sql = INSERT INTO t4 VALUES (1), (1), (1) +-- let $con1_extra_sql_present = 1 +-- let $con2_extra_sql = INSERT INTO t5_nontrans VALUES (1) +-- let $con2_extra_sql_present = 1 +-- let $con1_should_be_rolledback = 1 +-- source include/innodb_trx_weight.inc + +-- let $con1_extra_sql = INSERT INTO t4 VALUES (1), (1), (1) +-- let $con1_extra_sql = $con1_extra_sql; INSERT INTO t5_nontrans VALUES (1) +-- let $con1_extra_sql_present = 1 +-- let $con2_extra_sql = INSERT INTO t5_nontrans VALUES (1) +-- let $con2_extra_sql_present = 1 +-- let $con1_should_be_rolledback = 0 +-- source include/innodb_trx_weight.inc + +DROP TABLE t1, t2, t3, t4, t5_nontrans; === removed file 'mysql-test/t/innodb_trx_weight.test' --- a/mysql-test/t/innodb_trx_weight.test 2007-07-10 11:37:43 +0000 +++ b/mysql-test/t/innodb_trx_weight.test 1970-01-01 00:00:00 +0000 @@ -1,108 +0,0 @@ -# -# Ensure that the number of locks (SELECT FOR UPDATE for example) is -# added to the number of altered rows when choosing the smallest -# transaction to kill as a victim when a deadlock is detected. -# Also transactions what had edited non-transactional tables should -# be heavier than ones that had not. -# - --- source include/have_innodb.inc - -SET storage_engine=InnoDB; - -# we do not really care about what gets printed, we are only -# interested in getting the deadlock resolved according to our -# expectations --- disable_query_log --- disable_result_log - -# we want to use "-- eval statement1; statement2" which does not work with -# prepared statements. Because this test should not behave differently with -# or without prepared statements we disable them so the test does not fail -# if someone runs ./mysql-test-run.pl --ps-protocol --- disable_ps_protocol - --- disable_warnings -DROP TABLE IF EXISTS t1, t2, t3, t4, t5_nontrans; --- enable_warnings - -# we will create a simple deadlock with t1, t2 and two connections -CREATE TABLE t1 (a INT); -CREATE TABLE t2 (a INT); - -# auxiliary table with a bulk of rows which will be locked by a -# transaction to increase its weight -CREATE TABLE t3 (a INT); - -# auxiliary empty table which will be inserted by a -# transaction to increase its weight -CREATE TABLE t4 (a INT); - -# auxiliary non-transactional table which will be edited by a -# transaction to tremendously increase its weight -CREATE TABLE t5_nontrans (a INT) ENGINE=MyISAM; - -INSERT INTO t1 VALUES (1); -INSERT INTO t2 VALUES (1); -# insert a lot of rows in t3 -INSERT INTO t3 VALUES (1); -INSERT INTO t3 SELECT * FROM t3; -INSERT INTO t3 SELECT * FROM t3; -INSERT INTO t3 SELECT * FROM t3; -INSERT INTO t3 SELECT * FROM t3; -INSERT INTO t3 SELECT * FROM t3; -INSERT INTO t3 SELECT * FROM t3; -INSERT INTO t3 SELECT * FROM t3; -INSERT INTO t3 SELECT * FROM t3; -INSERT INTO t3 SELECT * FROM t3; -INSERT INTO t3 SELECT * FROM t3; -INSERT INTO t3 SELECT * FROM t3; - -# test locking weight - --- let $con1_extra_sql = --- let $con1_extra_sql_present = 0 --- let $con2_extra_sql = SELECT * FROM t3 FOR UPDATE --- let $con2_extra_sql_present = 1 --- let $con1_should_be_rolledback = 1 --- source include/innodb_trx_weight.inc - --- let $con1_extra_sql = INSERT INTO t4 VALUES (1), (1) --- let $con1_extra_sql_present = 1 --- let $con2_extra_sql = SELECT * FROM t3 FOR UPDATE --- let $con2_extra_sql_present = 1 --- let $con1_should_be_rolledback = 1 --- source include/innodb_trx_weight.inc - --- let $con1_extra_sql = INSERT INTO t4 VALUES (1), (1), (1), (1), (1), (1) --- let $con1_extra_sql_present = 1 --- let $con2_extra_sql = SELECT * FROM t3 FOR UPDATE --- let $con2_extra_sql_present = 1 --- let $con1_should_be_rolledback = 0 --- source include/innodb_trx_weight.inc - -# test weight when non-transactional tables are edited - --- let $con1_extra_sql = INSERT INTO t4 VALUES (1), (1), (1) --- let $con1_extra_sql_present = 1 --- let $con2_extra_sql = --- let $con2_extra_sql_present = 0 --- let $con1_should_be_rolledback = 0 --- source include/innodb_trx_weight.inc - --- let $con1_extra_sql = INSERT INTO t4 VALUES (1), (1), (1) --- let $con1_extra_sql_present = 1 --- let $con2_extra_sql = INSERT INTO t5_nontrans VALUES (1) --- let $con2_extra_sql_present = 1 --- let $con1_should_be_rolledback = 1 --- source include/innodb_trx_weight.inc - --- let $con1_extra_sql = INSERT INTO t4 VALUES (1), (1), (1) --- let $con1_extra_sql = $con1_extra_sql; INSERT INTO t5_nontrans VALUES (1) --- let $con1_extra_sql_present = 1 --- let $con2_extra_sql = INSERT INTO t5_nontrans VALUES (1) --- let $con2_extra_sql_present = 1 --- let $con1_should_be_rolledback = 0 --- source include/innodb_trx_weight.inc - -DROP TABLE t1, t2, t3, t4, t5_nontrans; === added file 'mysql-test/t/innodb_xtradb_bug317074.test' --- a/mysql-test/t/innodb_xtradb_bug317074.test 1970-01-01 00:00:00 +0000 +++ b/mysql-test/t/innodb_xtradb_bug317074.test 2009-06-11 12:53:26 +0000 @@ -0,0 +1,45 @@ +-- source include/have_innodb.inc + +SET @save_innodb_file_format=@@global.innodb_file_format; +SET @save_innodb_file_format_check=@@global.innodb_file_format_check; +SET @save_innodb_file_per_table=@@global.innodb_file_per_table; +SET GLOBAL innodb_file_format='Barracuda'; +SET GLOBAL innodb_file_per_table=ON; + +-- disable_query_log +-- disable_result_log + +DROP TABLE IF EXISTS `test1`; +CREATE TABLE IF NOT EXISTS `test1` ( + `a` int primary key auto_increment, + `b` int default 0, + `c` char(100) default 'testtest' +) ENGINE=InnoDB ROW_FORMAT=COMPRESSED KEY_BLOCK_SIZE=8; + +delimiter |; +CREATE PROCEDURE insert_many(p1 int) +BEGIN +SET @x = 0; +SET @y = 0; +REPEAT + insert into test1 set b=1; + SET @x = @x + 1; + SET @y = @y + 1; + IF @y >= 100 THEN + commit; + SET @y = 0; + END IF; +UNTIL @x >= p1 END REPEAT; +END| +delimiter ;| +call insert_many(100000); +DROP PROCEDURE insert_many; + +# The bug is hangup at the following statement +ALTER TABLE test1 ENGINE=MyISAM; + +SET GLOBAL innodb_file_format=@save_innodb_file_format; +SET GLOBAL innodb_file_format_check=@save_innodb_file_format_check; +SET GLOBAL innodb_file_per_table=@save_innodb_file_per_table; + +DROP TABLE test1; === modified file 'mysql-test/t/mysqlbinlog_row_big.test' --- a/mysql-test/t/mysqlbinlog_row_big.test 2008-12-13 19:42:12 +0000 +++ b/mysql-test/t/mysqlbinlog_row_big.test 2009-06-11 12:53:26 +0000 @@ -24,6 +24,16 @@ --source include/big_test.inc --echo # +--echo # We need big packets. +--echo # +connect (con1, localhost, root,,); +connection con1; +SET @old_global_max_allowed_packet=@@global.max_allowed_packet; +SET @@global.max_allowed_packet= 1024*1024*1024; +connect (con2, localhost, root,,); +connection con2; + +--echo # --echo # Preparatory cleanup. --echo # --disable_warnings @@ -36,11 +46,6 @@ DROP TABLE IF EXISTS t1; SET timestamp=1000000000; --echo # ---echo # We need big packets. ---echo # -SET @@global.max_allowed_packet= 1024*1024*1024; - ---echo # --echo # Delete all existing binary logs. --echo # RESET MASTER; @@ -122,9 +127,14 @@ let $MYSQLD_DATADIR= `select @@datadir`; --echo # DROP TABLE t1; +connection con1; +SET @@global.max_allowed_packet=@old_global_max_allowed_packet; + --echo remove_file \$MYSQLTEST_VARDIR/$mysqlbinlog_output # # NOTE: If you want to see the *huge* mysqlbinlog output, disable next line: # --remove_file $MYSQLTEST_VARDIR/$mysqlbinlog_output +disconnect con1 +disconnect con2 === modified file 'mysql-test/t/partition_innodb.test' --- a/mysql-test/t/partition_innodb.test 2008-11-14 22:51:17 +0000 +++ b/mysql-test/t/partition_innodb.test 2009-06-09 15:08:46 +0000 @@ -27,14 +27,14 @@ UPDATE t1 SET DATA = data*2 WHERE id = 3 # grouping/referencing in replace_regex is very slow on long strings, # removing all before/after the interesting row before grouping/referencing ---replace_regex /.*---TRANSACTION [0-9]+ [0-9]+, .*, OS thread id [0-9]+// /MySQL thread id [0-9]+, query id [0-9]+ .*// /.*([0-9]+ lock struct$s$), heap size [0-9]+, ([0-9]+ row lock$s$).*/\1 \2/ +--replace_regex /.*LIST OF TRANSACTIONS FOR EACH SESSION:// /MySQL thread id [0-9]+, query id [0-9]+ .*// /.*([0-9]+ lock struct$s$), heap size [0-9]+, ([0-9]+ row lock$s$).*/\1 \2/ SHOW ENGINE InnoDB STATUS; UPDATE t1 SET data = data*2 WHERE data = 2; # grouping/referencing in replace_regex is very slow on long strings, # removing all before/after the interesting row before grouping/referencing ---replace_regex /.*---TRANSACTION [0-9]+ [0-9]+, .*, OS thread id [0-9]+// /MySQL thread id [0-9]+, query id [0-9]+ .*// /.*([0-9]+ lock struct$s$), heap size [0-9]+, ([0-9]+ row lock$s$).*/\1 \2/ +--replace_regex /.*LIST OF TRANSACTIONS FOR EACH SESSION:// /MySQL thread id [0-9]+, query id [0-9]+ .*// /.*([0-9]+ lock struct$s$), heap size [0-9]+, ([0-9]+ row lock$s$).*/\1 \2/ SHOW ENGINE InnoDB STATUS; SET @@session.tx_isolation = @old_tx_isolation; === modified file 'mysql-test/t/type_bit_innodb.test' --- a/mysql-test/t/type_bit_innodb.test 2009-03-11 21:03:25 +0000 +++ b/mysql-test/t/type_bit_innodb.test 2009-06-11 17:49:51 +0000 @@ -41,7 +41,7 @@ create table t1 (a bit) engine=innodb; insert into t1 values (b'0'), (b'1'), (b'000'), (b'100'), (b'001'); select hex(a) from t1; # It is not deterministic which duplicate will be seen first ---replace_regex /(.*Duplicate entry )'.*'( for key.*)/\1''\2/ +--replace_regex /entry '(.*)' for/entry '' for/ --error ER_DUP_ENTRY alter table t1 add unique (a); drop table t1; === modified file 'mysql-test/t/variables-big.test' --- a/mysql-test/t/variables-big.test 2008-06-26 05:18:28 +0000 +++ b/mysql-test/t/variables-big.test 2009-06-11 12:53:26 +0000 @@ -8,19 +8,20 @@ # Bug #27322 failure to allocate transaction_prealloc_size causes crash # +set @pid_temp = (select ID from information_schema.processlist); set session transaction_prealloc_size=1024*1024*1024*1; --replace_column 1 # -show processlist; +select @pid_temp = (select ID from information_schema.processlist) as 'TRUE'; set session transaction_prealloc_size=1024*1024*1024*2; --replace_column 1 # -show processlist; +select @pid_temp = (select ID from information_schema.processlist) as 'TRUE'; --replace_column 1 # set session transaction_prealloc_size=1024*1024*1024*3; --replace_column 1 # -show processlist; +select @pid_temp = (select ID from information_schema.processlist) as 'TRUE'; set session transaction_prealloc_size=1024*1024*1024*4; --replace_column 1 # -show processlist; +select @pid_temp = (select ID from information_schema.processlist) as 'TRUE'; set session transaction_prealloc_size=1024*1024*1024*5; --replace_column 1 # -show processlist; +select @pid_temp = (select ID from information_schema.processlist) as 'TRUE'; === modified file 'mysys/mf_iocache2.c' --- a/mysys/mf_iocache2.c 2009-04-25 10:05:32 +0000 +++ b/mysys/mf_iocache2.c 2009-06-11 17:49:51 +0000 @@ -464,3 +464,52 @@ process_flags: err: return (size_t) -1; } + +int init_strvar_from_file(char *var, int max_size, IO_CACHE *f, + const char *default_val) +{ + uint length; + DBUG_ENTER("init_strvar_from_file"); + + if ((length=my_b_gets(f,var, max_size))) + { + char* last_p = var + length -1; + if (*last_p == '\n') + *last_p = 0; /* if we stopped on newline, kill it */ + else + { + /* + If we truncated a line or stopped on last char, remove all chars + up to and including newline. + */ + int c; + while (((c=my_b_get(f)) != '\n' && c != my_b_EOF)) + ; + } + DBUG_RETURN(0); + } + else if (default_val) + { + strmake(var, default_val, max_size-1); + DBUG_RETURN(0); + } + DBUG_RETURN(1); +} + +int init_intvar_from_file(int* var, IO_CACHE* f, int default_val) +{ + char buf[32]; + DBUG_ENTER("init_intvar_from_file"); + + if (my_b_gets(f, buf, sizeof(buf))) + { + *var = atoi(buf); + DBUG_RETURN(0); + } + else if (default_val) + { + *var = default_val; + DBUG_RETURN(0); + } + DBUG_RETURN(1); +} === modified file 'mysys/thr_mutex.c' --- a/mysys/thr_mutex.c 2009-02-19 09:01:25 +0000 +++ b/mysys/thr_mutex.c 2009-06-09 15:08:46 +0000 @@ -149,6 +149,35 @@ static inline void remove_from_active_li mp->prev= mp->next= 0; } +/* + We initialise the hashes for deadlock detection lazily. + This greatly helps with performance when lots of mutexes are initiased but + only a few of them are actually used (eg. XtraDB). +*/ +static int safe_mutex_lazy_init_deadlock_detection(safe_mutex_t *mp) +{ + if (!my_multi_malloc(MY_FAE | MY_WME, + &mp->locked_mutex, sizeof(*mp->locked_mutex), + &mp->used_mutex, sizeof(*mp->used_mutex), NullS)) + { + return 1; /* Error */ + } + + pthread_mutex_lock(&THR_LOCK_mutex); + mp->id= ++safe_mutex_id; + pthread_mutex_unlock(&THR_LOCK_mutex); + hash_init(mp->locked_mutex, &my_charset_bin, + 1000, + offsetof(safe_mutex_deadlock_t, id), + sizeof(mp->id), + 0, 0, HASH_UNIQUE); + hash_init(mp->used_mutex, &my_charset_bin, + 1000, + offsetof(safe_mutex_t, id), + sizeof(mp->id), + 0, 0, HASH_UNIQUE); + return 0; +} int safe_mutex_init(safe_mutex_t *mp, const pthread_mutexattr_t *attr __attribute__((unused)), @@ -167,35 +196,8 @@ int safe_mutex_init(safe_mutex_t *mp, mp->line= line; /* Skip the very common '&' prefix from the autogenerated name */ mp->name= name[0] == '&' ? name + 1 : name; + /* Deadlock detection is initialised only lazily, on first use. */ - if (safe_mutex_deadlock_detector && !( my_flags & MYF_NO_DEADLOCK_DETECTION)) - { - if (!my_multi_malloc(MY_FAE | MY_WME, - &mp->locked_mutex, sizeof(*mp->locked_mutex), - &mp->used_mutex, sizeof(*mp->used_mutex), NullS)) - { - /* Disable deadlock handling for this mutex */ - my_flags|= MYF_NO_DEADLOCK_DETECTION; - } - else - { - pthread_mutex_lock(&THR_LOCK_mutex); - mp->id= ++safe_mutex_id; - pthread_mutex_unlock(&THR_LOCK_mutex); - hash_init(mp->locked_mutex, &my_charset_bin, - 1000, - offsetof(safe_mutex_deadlock_t, id), - sizeof(mp->id), - 0, 0, HASH_UNIQUE); - hash_init(mp->used_mutex, &my_charset_bin, - 1000, - offsetof(safe_mutex_t, id), - sizeof(mp->id), - 0, 0, HASH_UNIQUE); - } - } - else - my_flags|= MYF_NO_DEADLOCK_DETECTION; mp->create_flags= my_flags; #ifdef SAFE_MUTEX_DETECT_DESTROY @@ -310,7 +312,8 @@ int safe_mutex_lock(safe_mutex_t *mp, my /* Deadlock detection */ mp->prev= mp->next= 0; - if (!(mp->active_flags & (MYF_TRY_LOCK | MYF_NO_DEADLOCK_DETECTION))) + if (!(mp->active_flags & (MYF_TRY_LOCK | MYF_NO_DEADLOCK_DETECTION)) && + (mp->used_mutex != NULL || !safe_mutex_lazy_init_deadlock_detection(mp))) { safe_mutex_t **mutex_in_use= my_thread_var_mutex_in_use(); @@ -643,7 +646,7 @@ int safe_mutex_destroy(safe_mutex_t *mp, void safe_mutex_free_deadlock_data(safe_mutex_t *mp) { /* Free all entries that points to this one */ - if (!(mp->create_flags & MYF_NO_DEADLOCK_DETECTION)) + if (!(mp->create_flags & MYF_NO_DEADLOCK_DETECTION) && mp->used_mutex != NULL) { pthread_mutex_lock(&THR_LOCK_mutex); my_hash_iterate(mp->used_mutex, === modified file 'sql/log_event.cc' --- a/sql/log_event.cc 2009-05-19 09:28:05 +0000 +++ b/sql/log_event.cc 2009-06-11 17:49:51 +0000 @@ -9313,3 +9313,29 @@ st_print_event_info::st_print_event_info open_cached_file(&body_cache, NULL, NULL, 0, flags); } #endif + +#if defined(MYSQL_SERVER) +/* + Access to the current replication position. + + There is a dummy replacement for this in the embedded library that returns + FALSE; this is used by XtraDB to allow it to access replication stuff while + still being able to use the same plugin in both stand-alone and embedded. +*/ +bool rpl_get_position_info(const char **log_file_name, ulonglong *log_pos, + const char **group_relay_log_name, + ulonglong *relay_log_pos) +{ +#if defined(EMBEDDED_LIBRARY) || !defined(HAVE_REPLICATION) + return FALSE; +#else + const Relay_log_info *rli= &(active_mi->rli); + *log_file_name= rli->group_master_log_name; + *log_pos= rli->group_master_log_pos + + (rli->future_event_relay_log_pos - rli->group_relay_log_pos); + *group_relay_log_name= rli->group_relay_log_name; + *relay_log_pos= rli->future_event_relay_log_pos; + return TRUE; +#endif +} +#endif === modified file 'sql/log_event.h' --- a/sql/log_event.h 2009-03-17 20:29:24 +0000 +++ b/sql/log_event.h 2009-06-11 17:49:51 +0000 @@ -3917,6 +3917,10 @@ static inline bool copy_event_cache_to_f reinit_io_cache(cache, WRITE_CACHE, 0, FALSE, TRUE); } +bool rpl_get_position_info(const char **log_file_name, ulonglong *log_pos, + const char **group_relay_log_name, + ulonglong *relay_log_pos); + /** @} (end of group Replication) */ === modified file 'sql/rpl_mi.cc' --- a/sql/rpl_mi.cc 2008-12-02 22:02:52 +0000 +++ b/sql/rpl_mi.cc 2009-06-11 12:53:26 +0000 @@ -22,11 +22,6 @@ #ifdef HAVE_REPLICATION -// Defined in slave.cc -int init_intvar_from_file(int* var, IO_CACHE* f, int default_val); -int init_strvar_from_file(char *var, int max_size, IO_CACHE *f, - const char *default_val); - Master_info::Master_info() :Slave_reporting_capability("I/O"), ssl(0), ssl_verify_server_cert(0), fd(-1), io_thd(0), inited(0), === modified file 'sql/rpl_rli.cc' --- a/sql/rpl_rli.cc 2009-05-19 09:28:05 +0000 +++ b/sql/rpl_rli.cc 2009-06-11 17:49:51 +0000 @@ -23,11 +23,6 @@ static int count_relay_log_space(Relay_log_info* rli); -// Defined in slave.cc -int init_intvar_from_file(int* var, IO_CACHE* f, int default_val); -int init_strvar_from_file(char *var, int max_size, IO_CACHE *f, - const char *default_val); - Relay_log_info::Relay_log_info() :Slave_reporting_capability("SQL"), === modified file 'sql/slave.cc' --- a/sql/slave.cc 2009-05-19 09:28:05 +0000 +++ b/sql/slave.cc 2009-06-11 17:49:51 +0000 @@ -755,57 +755,6 @@ const char *print_slave_db_safe(const ch DBUG_RETURN((db ? db : "")); } -int init_strvar_from_file(char *var, int max_size, IO_CACHE *f, - const char *default_val) -{ - uint length; - DBUG_ENTER("init_strvar_from_file"); - - if ((length=my_b_gets(f,var, max_size))) - { - char* last_p = var + length -1; - if (*last_p == '\n') - *last_p = 0; // if we stopped on newline, kill it - else - { - /* - If we truncated a line or stopped on last char, remove all chars - up to and including newline. - */ - int c; - while (((c=my_b_get(f)) != '\n' && c != my_b_EOF)) - ; - } - DBUG_RETURN(0); - } - else if (default_val) - { - strmake(var, default_val, max_size-1); - DBUG_RETURN(0); - } - DBUG_RETURN(1); -} - - -int init_intvar_from_file(int* var, IO_CACHE* f, int default_val) -{ - char buf[32]; - DBUG_ENTER("init_intvar_from_file"); - - - if (my_b_gets(f, buf, sizeof(buf))) - { - *var = atoi(buf); - DBUG_RETURN(0); - } - else if (default_val) - { - *var = default_val; - DBUG_RETURN(0); - } - DBUG_RETURN(1); -} - /* Note that we rely on the master's version (3.23, 4.0.14 etc) instead of relying on the binlog's version. This is not perfect: imagine an upgrade === renamed file 'storage/innobase/plug.in' => 'storage/innobase/plug.in.disabled' === added directory 'storage/xtradb' === added file 'storage/xtradb/CMakeLists.txt' --- a/storage/xtradb/CMakeLists.txt 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/CMakeLists.txt 2009-06-09 12:21:26 +0000 @@ -0,0 +1,97 @@ +# Copyright (C) 2006 MySQL AB +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; version 2 of the License. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software +# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + +SET(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -DSAFEMALLOC -DSAFE_MUTEX") +SET(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -DSAFEMALLOC -DSAFE_MUTEX") +ADD_DEFINITIONS(-D_WIN32 -D_LIB) + +# Bug 19424 - InnoDB: Possibly a memory overrun of the buffer being freed (64-bit Visual C) +# Removing Win64 compiler optimizations for all innodb/mem/* files. +IF(CMAKE_GENERATOR MATCHES "Visual Studio" AND CMAKE_SIZEOF_VOID_P MATCHES 8) + SET_SOURCE_FILES_PROPERTIES(${CMAKE_SOURCE_DIR}/storage/xtradb/mem/mem0mem.c + ${CMAKE_SOURCE_DIR}/storage/xtradb/mem/mem0pool.c + PROPERTIES COMPILE_FLAGS -Od) +ENDIF(CMAKE_GENERATOR MATCHES "Visual Studio" AND CMAKE_SIZEOF_VOID_P MATCHES 8) + +INCLUDE_DIRECTORIES(${CMAKE_SOURCE_DIR}/include ${CMAKE_SOURCE_DIR}/zlib + ${CMAKE_SOURCE_DIR}/storage/xtradb/include + ${CMAKE_SOURCE_DIR}/storage/xtradb/handler + ${CMAKE_SOURCE_DIR}/sql + ${CMAKE_SOURCE_DIR}/regex + ${CMAKE_SOURCE_DIR}/extra/yassl/include) + +SET(INNOBASE_SOURCES btr/btr0btr.c btr/btr0cur.c btr/btr0pcur.c btr/btr0sea.c + buf/buf0buddy.c buf/buf0buf.c buf/buf0flu.c buf/buf0lru.c buf/buf0rea.c + data/data0data.c data/data0type.c + dict/dict0boot.c dict/dict0crea.c dict/dict0dict.c dict/dict0load.c dict/dict0mem.c + dyn/dyn0dyn.c + eval/eval0eval.c eval/eval0proc.c + fil/fil0fil.c + fsp/fsp0fsp.c + fut/fut0fut.c fut/fut0lst.c + ha/ha0ha.c ha/hash0hash.c ha/ha0storage.c + ibuf/ibuf0ibuf.c + pars/lexyy.c pars/pars0grm.c pars/pars0opt.c pars/pars0pars.c pars/pars0sym.c + lock/lock0lock.c lock/lock0iter.c + log/log0log.c log/log0recv.c + mach/mach0data.c + mem/mem0mem.c mem/mem0pool.c + mtr/mtr0log.c mtr/mtr0mtr.c + os/os0file.c os/os0proc.c os/os0sync.c os/os0thread.c + page/page0cur.c page/page0page.c page/page0zip.c + que/que0que.c + handler/ha_innodb.cc handler/handler0alter.cc handler/i_s.cc handler/mysql_addons.cc + read/read0read.c + rem/rem0cmp.c rem/rem0rec.c + row/row0ext.c row/row0ins.c row/row0merge.c row/row0mysql.c + row/row0purge.c row/row0row.c row/row0sel.c row/row0uins.c + row/row0umod.c row/row0undo.c row/row0upd.c row/row0vers.c + srv/srv0que.c srv/srv0srv.c srv/srv0start.c + sync/sync0arr.c sync/sync0rw.c sync/sync0sync.c + thr/thr0loc.c + trx/trx0i_s.c trx/trx0purge.c trx/trx0rec.c trx/trx0roll.c trx/trx0rseg.c + trx/trx0sys.c trx/trx0trx.c trx/trx0undo.c + usr/usr0sess.c + ut/ut0byte.c ut/ut0dbg.c ut/ut0mem.c ut/ut0rnd.c ut/ut0ut.c ut/ut0vec.c ut/ut0list.c ut/ut0wqueue.c) + +IF(NOT SOURCE_SUBLIBS) + ADD_LIBRARY(innobase ${INNOBASE_SOURCES}) + ADD_DEPENDENCIES(innobase GenError) + SET_TARGET_PROPERTIES(innobase PROPERTIES COMPILE_FLAGS "-DMYSQL_SERVER") + + IF(INNODB_DYNAMIC_PLUGIN) + # The dynamic plugin requires CMake 2.6.0 or later. Otherwise, the /DELAYLOAD property + # will not be set + CMAKE_MINIMUM_REQUIRED(VERSION 2.6.0 FATAL_ERROR) + ADD_LIBRARY(ha_innodb SHARED ${INNOBASE_SOURCES} ha_innodb.def handler/win_delay_loader.cc) + ADD_DEPENDENCIES(ha_innodb GenError mysqld) + # If build type is not specified as Release, default to Debug + # This is a workaround to a problem in CMake 2.6, which does not + # set the path of mysqld.lib correctly + IF(CMAKE_BUILD_TYPE MATCHES Release) + SET(CMAKE_BUILD_TYPE "Release") + ELSE(CMAKE_BUILD_TYPE MATCHES Release) + SET(CMAKE_BUILD_TYPE "Debug") + ENDIF(CMAKE_BUILD_TYPE MATCHES Release) + TARGET_LINK_LIBRARIES(ha_innodb strings zlib) + TARGET_LINK_LIBRARIES(ha_innodb ${CMAKE_SOURCE_DIR}/sql/${CMAKE_BUILD_TYPE}/mysqld.lib) + SET_TARGET_PROPERTIES(ha_innodb PROPERTIES OUTPUT_NAME ha_innodb) + SET_TARGET_PROPERTIES(ha_innodb PROPERTIES LINK_FLAGS "/MAP /MAPINFO:EXPORTS") + SET_TARGET_PROPERTIES(ha_innodb PROPERTIES LINK_FLAGS "/ENTRY:\"_DllMainCRTStartup@12\"") + SET_TARGET_PROPERTIES(ha_innodb PROPERTIES COMPILE_FLAGS "-DMYSQL_DYNAMIC_PLUGIN") + SET_TARGET_PROPERTIES(ha_innodb PROPERTIES LINK_FLAGS "/DELAYLOAD:mysqld.exe") + ENDIF(INNODB_DYNAMIC_PLUGIN) + +ENDIF(NOT SOURCE_SUBLIBS) === added file 'storage/xtradb/COPYING.Google' --- a/storage/xtradb/COPYING.Google 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/COPYING.Google 2009-06-09 11:16:11 +0000 @@ -0,0 +1,30 @@ +Portions of this software contain modifications contributed by Google, Inc. +These contributions are used with the following license: + +Copyright (c) 2008, Google Inc. All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions +are met: + * Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + * Redistributions in binary form must reproduce the above + copyright notice, this list of conditions and the following + disclaimer in the documentation and/or other materials + provided with the distribution. + * Neither the name of the Google Inc. nor the names of its + contributors may be used to endorse or promote products + derived from this software without specific prior written + permission. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. === added file 'storage/xtradb/ChangeLog' --- a/storage/xtradb/ChangeLog 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/ChangeLog 2009-06-09 11:16:11 +0000 @@ -0,0 +1,775 @@ +2009-03-05 The InnoDB Team + + * handler/ha_innodb.cc, mysql-test/innodb-autoinc.result, + mysql-test/innodb-autoinc.test: + Fix Bug#43203 Overflow from auto incrementing causes server segv + +2009-02-25 The InnoDB Team + + * handler/ha_innodb.cc, mysql-test/innodb-autoinc.result, + mysql-test/innodb-autoinc.test: + Fix Bug#42714 AUTO_INCREMENT errors in 5.1.31 + +2009-02-23 The InnoDB Team + + * btr/btr0cur.c: + Fix Bug#43043 Crash on BLOB delete operation + +2009-02-20 The InnoDB Team + + * handler/ha_innodb.cc: + Make innodb_use_sys_malloc=ON the default. + +2009-02-20 The InnoDB Team + + * handler/ha_innodb.cc, mysql-test/innodb-autoinc.result, + mysql-test/innodb-autoinc.test: + Fix Bug#42400 InnoDB autoinc code can't handle floating-point columns + +2009-02-18 The InnoDB Team + + * include/ut0mem.h, os/os0proc.c, ut/ut0mem.c: + Protect ut_total_allocated_memory with ut_list_mutex in + os_mem_alloc_large() and os_mem_free_large(). The lack of this mutex + protection could cause an assertion failure during fast index + creation. Also, add UNIV_MEM_ALLOC and UNIV_MEM_FREE instrumentation + to os_mem_alloc_large() and os_mem_free_large(), so that Valgrind can + detect more errors. + +2009-02-11 The InnoDB Team + + * handler/ha_innodb.cc: + Make innodb_thread_concurrency=0 the default. The old default value + was 8. A non-zero setting may be useful when InnoDB is showing severe + scalability problems under multiple concurrent connections. + +2009-02-10 The InnoDB Team + + * handler/ha_innodb.cc, handler/ha_innodb.h: + Fix Bug#41676 Table names are case insensitive in locking + +2009-02-10 The InnoDB Team + + * mem/mem0dbg.c, mem/mem0mem.c, mem/mem0pool.c: + When innodb_use_sys_malloc is set, ignore + innodb_additional_mem_pool_size, because nothing will be allocated + from mem_comm_pool. + +2009-02-10 The InnoDB Team + + * ut/ut0mem.c: + Map ut_malloc_low(), ut_realloc(), and ut_free() directly to malloc(), + realloc(), and free() when innodb_use_sys_malloc is set. As a side + effect, ut_total_allocated_memory ("Total memory allocated" in the + "BUFFER POOL AND MEMORY" section of SHOW ENGINE INNODB STATUS) will + exclude any memory allocated by these functions when + innodb_use_sys_malloc is set. + +2009-02-10 The InnoDB Team + + * btr/btr0cur.c, btr/btr0sea.c, buf/buf0buf.c, handler/ha_innodb.cc, + include/buf0buf.ic, include/os0sync.h, include/srv0srv.h, + include/sync0rw.h, include/sync0rw.ic, include/sync0sync.h, + include/sync0sync.ic, include/univ.i, row/row0sel.c, srv/srv0srv.c, + srv/srv0start.c, sync/sync0arr.c, sync/sync0rw.c, sync/sync0sync.c: + On those platforms that support it, implement the synchronization + primitives of InnoDB mutexes and read/write locks with GCC atomic + builtins instead of Pthreads mutexes and InnoDB mutexes. These changes + are based on a patch supplied by Mark Callaghan of Google under a BSD + license. + +2009-01-30 The InnoDB Team + + * btr/btr0cur.c, btr/btr0sea.c, buf/buf0buf.c, handler/ha_innodb.cc, + include/btr0sea.h, include/buf0buf.h, include/sync0sync.h, + sync/sync0sync.c: + Make the configuration parameter innodb_adaptive_hash_index dynamic, + so that it can be changed at runtime. + +2009-01-29 The InnoDB Team + + * handler/ha_innodb.cc, ibuf/ibuf0ibuf.c, include/ibuf0ibuf.h, + include/ibuf0ibuf.ic: + Implement the settable global variable innodb_change_buffering, + with the allowed values 'none' and 'inserts'. The default value + 'inserts' enables the buffering of inserts to non-unique secondary + index trees when the B-tree leaf page is not in the buffer pool. + +2009-01-27 The InnoDB Team + + * buf/buf0lru.c: + Fix a race condition in buf_LRU_invalidate_tablespace(): The + compressed page size (zip_size) was read while the block descriptor + was no longer protected by a mutex. This could lead to corruption + when a table is dropped on a busy system that contains compressed + tables. + +2009-01-26 The InnoDB Team + + * btr/btr0sea.c, buf/buf0buf.c, include/buf0buf.h, include/buf0buf.ic, + include/mtr0log.ic, include/row0upd.ic, mtr/mtr0mtr.c: + Implement buf_block_align() with pointer arithmetics, as it is in the + built-in InnoDB distributed with MySQL. Do not acquire the buffer pool + mutex before buf_block_align(). This removes a scalability bottleneck + in the adaptive hash index lookup. In CHECK TABLE, check that + buf_pool->page_hash is consistent with buf_block_align(). + +2009-01-23 The InnoDB Team + + * btr/btr0sea.c: + Fix Bug#42279 Race condition in btr_search_drop_page_hash_when_freed() + +2009-01-23 The InnoDB Team + + * buf/buf0buf.c, include/buf0buf.h: + Remove the unused mode BUF_GET_NOWAIT of buf_page_get_gen() + +2009-01-20 The InnoDB Team + + * include/rem0rec.h, include/rem0rec.ic: + Fix Bug#41571 MySQL segfaults after innodb recovery + +2009-01-20 The InnoDB Team + + * lock/lock0lock.c: + Fix Bug#42152 Race condition in lock_is_table_exclusive() + +2009-01-14 The InnoDB Team + + * include/trx0roll.h, trx/trx0roll.c, trx/trx0trx.c: + Fix Bug#38187 Error 153 when creating savepoints + +2009-01-14 The InnoDB Team + + * dict/dict0load.c: + Fix Bug#42075 dict_load_indexes failure in dict_load_table will + corrupt the dictionary cache + +2009-01-13 The InnoDB Team + + * buf/buf0buddy.c, dict/dict0dict.c, dict/dict0mem.c, fil/fil0fil.c, + ha/ha0storage.c, handler/ha_innodb.cc, handler/win_delay_loader.cc, + include/buf0buf.ic, include/dict0dict.ic, include/hash0hash.h, + thr/thr0loc.c, trx/trx0i_s.c: + Add the parameter ASSERTION to HASH_SEARCH() macro, and use it for + light validation of the traversed items in hash table lookups when + UNIV_DEBUG is enabled. + +2009-01-09 The InnoDB Team + + * buf/buf0flu.c, include/buf0flu.h, include/buf0flu.ic: + Remove unused code from the functions + buf_flush_insert_into_flush_list() and + buf_flush_insert_sorted_into_flush_list(). + +2009-01-09 The InnoDB Team + + * buf/buf0flu.c: + Simplify the functions buf_flush_try_page() and buf_flush_batch(). Add + debug assertions and an explanation to buf_flush_write_block_low(). + +2009-01-07 The InnoDB Team + + * row/row0merge.c: + Fix a bug in recovery when dropping temporary indexes. + +2009-01-07 The InnoDB Team + + * handler/ha_innodb.cc, handler/ha_innodb.h, handler/handler0alter.cc: + Fix Bug#41680 calls to trx_allocate_for_mysql are not consistent + +2009-01-07 The InnoDB Team + + * mysql-test/innodb_bug41904.result, mysql-test/innodb_bug41904.test, + row/row0merge.c: + Fix Bug#41904 create unique index problem + +2009-01-02 The InnoDB Team + + * handler/ha_innodb.cc, include/srv0srv.h, mem/mem0pool.c, + mysql-test/innodb-use-sys-malloc-master.opt, + mysql-test/innodb-use-sys-malloc.result, + mysql-test/innodb-use-sys-malloc.test, srv/srv0srv.c, srv/srv0start.c: + Implement the configuration parameter innodb_use_sys_malloc (false by + default), for disabling InnoDB's internal memory allocator and using + system malloc/free instead. The "BUFFER POOL AND MEMORY" section of + SHOW ENGINE INNODB STATUS will report "in additional pool allocated + allocated 0" when innodb_use_sys_malloc is set. + +2008-12-30 The InnoDB Team + + * btr/btr0btr.c: + When setting the PAGE_LEVEL of a compressed B-tree page from or to 0, + compress the page at the same time. This is necessary, because the + column information stored on the compressed page will differ between + leaf and non-leaf pages. Leaf pages are identified by PAGE_LEVEL=0. + This bug can make InnoDB crash when all rows of a compressed table are + deleted. + +2008-12-17 The InnoDB Team + + * include/row0sel.h, include/row0upd.h, pars/pars0pars.c, + row/row0mysql.c, row/row0sel.c, row/row0upd.c: + Remove update-in-place select from the internal SQL interpreter. It + was only used for updating the InnoDB internal data dictionary when + renaming or dropping tables. It could have caused deadlocks when + acquiring latches on insert buffer bitmap pages. + +2008-12-17 The InnoDB Team + + * btr/btr0sea.c, buf/buf0buf.c, buf/buf0lru.c, ha/ha0ha.c, + ha/hash0hash.c, include/buf0buf.h, include/ha0ha.h, include/ha0ha.ic, + include/hash0hash.h, include/univ.i: + Introduce the preprocessor symbol UNIV_AHI_DEBUG for enabling adaptive + hash index debugging independently of UNIV_DEBUG. + +2008-12-16 The InnoDB Team + + * btr/btr0cur.c: + Do not update the free bits in the insert buffer bitmap when inserting + or deleting from the insert buffer B-tree. Assert that records in the + insert buffer B-tree are never updated. + +2008-12-12 The InnoDB Team + + * buf/buf0buf.c, fil/fil0fil.c, fsp/fsp0fsp.c, ibuf/ibuf0ibuf.c, + include/fil0fil.h, include/ibuf0ibuf.h, include/ibuf0ibuf.ic, + include/ibuf0types.h: + Clean up the insert buffer subsystem so that only one insert + buffer B-tree exists. + Originally, there were provisions in InnoDB for multiple insert + buffer B-trees, apparently one for each tablespace. + When Heikki Tuuri implemented multiple InnoDB tablespaces in + MySQL/InnoDB 4.1, he made the insert buffer live only in the + system tablespace (space 0) but left the provisions in the code. + +2008-12-11 The InnoDB Team + + * include/srv0srv.h, os/os0proc.c, srv/srv0srv.c: + Fix the issue that the InnoDB plugin fails if innodb_buffer_pool_size + is defined bigger than 4096M on 64-bit Windows. This bug should not + have affected other 64-bit systems. + +2008-12-09 The InnoDB Team + + * handler/ha_innodb.cc: + Fix Bug#40386 Not flushing query cache after truncate. + +2008-12-09 The InnoDB Team + + * handler/ha_innodb.cc, srv/srv0srv.c, trx/trx0trx.c: + Fix Bug#40760 "set global innodb_thread_concurrency = 0;" is not safe + +2008-12-04 The InnoDB Team + + * handler/ha_innodb.cc, handler/mysql_addons.cc, + include/mysql_addons.h, trx/trx0i_s.c, win-plugin/win-plugin.diff: + Remove dependencies to MySQL internals (defining MYSQL_SERVER). + +2008-12-02 The InnoDB Team + + * page/page0cur.c: + When allocating space for a record from the free list of previously + purged records, zero out the DB_TRX_ID and DB_ROLL_PTR of the purged + record if the new record would not overwrite these fields. This fixes + a harmless content mismatch reported by page_zip_validate(). + +2008-12-02 The InnoDB Team + + * row/row0merge.c: + Replace the WHILE 1 with WHILE 1=1 in the SQL procedure, so that the + loop will actually be entered and temporary indexes be dropped during + crash recovery. + +2008-12-01 The InnoDB Team + + InnoDB Plugin 1.0.2 released + +2008-10-31 The InnoDB Team + + * dict/dict0mem.c, include/dict0mem.h, include/lock0lock.h, + include/row0mysql.h, include/trx0trx.h, include/univ.i, + include/ut0vec.h, include/ut0vec.ic, lock/lock0lock.c, + row/row0mysql.c, trx/trx0trx.c: + Fix Bug#26316 Triggers create duplicate entries on auto-increment + columns + +2008-10-30 The InnoDB Team + + * handler/ha_innodb.cc, handler/handler0vars.h, + handler/win_delay_loader.cc, mysql-test/innodb_bug40360.result, + mysql-test/innodb_bug40360.test: + Fix Bug#40360 Binlog related errors with binlog off + +2008-10-29 The InnoDB Team + + * include/data0type.ic: + Fix Bug#40369 dtype_get_sql_null_size() returns 0 or 1, not the size + +2008-10-29 The InnoDB Team + + * handler/ha_innodb.cc, include/srv0srv.h, srv/srv0srv.c: + Fix Bug#38189 innodb_stats_on_metadata missing + +2008-10-28 The InnoDB Team + + * CMakeLists.txt, ha_innodb.def, handler/ha_innodb.cc, + handler/handler0alter.cc, handler/handler0vars.h, handler/i_s.cc, + handler/win_delay_loader.cc, win-plugin/*: + Implemented the delayloading of externals for the plugin on Windows. + This makes it possible to build a dynamic plugin (ha_innodb.dll) on + Windows. + +2008-10-27 The InnoDB Team + + * CMakeLists.txt: + Fix Bug#19424 InnoDB: Possibly a memory overrun of the buffer being + freed (64-bit Visual C) + +2008-10-23 The InnoDB Team + + * ibuf/ibuf0ibuf.c: + ibuf_delete_rec(): When the cursor to the insert buffer record + cannot be restored, do not complain if the tablespace does not + exist, because the insert buffer record may have been discarded by + some other thread. This bug has existed in MySQL/InnoDB since + version 4.1, when innodb_file_per_table was implemented. + This may fix Bug#27276 InnoDB Error: ibuf cursor restoration fails. + +2008-10-22 The InnoDB Team + + * dict/dict0dict.c, dict/dict0mem.c, handler/ha_innodb.cc, + handler/ha_innodb.h, include/dict0dict.h, include/dict0mem.h, + row/row0mysql.c: + Fix Bug#39830 Table autoinc value not updated on first insert + Fix Bug#35498 Cannot get table test/table1 auto-inccounter value in + ::info + Fix Bug#36411 "Failed to read auto-increment value from storage + engine" in 5.1.24 auto-inc + +2008-10-22 The InnoDB Team + + * handler/ha_innodb.cc, include/row0mysql.h, row/row0mysql.c: + Fix Bug#40224 New AUTOINC changes mask reporting of deadlock/timeout + errors + +2008-10-16 The InnoDB Team + + * dict/dict0dict.c, mysql-test/innodb-index.result, + mysql-test/innodb-index.test: + Skip the undo log size check when creating REDUNDANT and COMPACT + tables. In ROW_FORMAT=DYNAMIC and ROW_FORMAT=COMPRESSED, column + prefix indexes require that prefixes of externally stored columns + be written to the undo log. This may make the undo log record + bigger than the record on the B-tree page. The maximum size of an + undo log record is the page size. That must be checked for, in + dict_index_add_to_cache(). However, this restriction must not + be enforced on REDUNDANT or COMPACT tables. + +2008-10-15 The InnoDB Team + + * btr/btr0cur.c, include/btr0cur.h, row/row0ext.c, row/row0sel.c, + row/row0upd.c: + When the server crashes while freeing an externally stored column + of a compressed table, the BTR_EXTERN_LEN field in the BLOB + pointer will be written as 0. Tolerate this in the functions that + deal with externally stored columns. This fixes problems after + crash recovery, in the rollback of incomplete transactions, and in + the purge of delete-marked records. + +2008-10-15 The InnoDB Team + + * btr/btr0btr.c, include/page0zip.h, page/page0zip.c, include/univ.i: + When a B-tree node of a compressed table is split or merged, the + compression may fail. In this case, the entire compressed page + will be copied and the excess records will be deleted. However, + page_zip_copy(), now renamed to page_zip_copy_recs(), copied too + many fields in the page header, overwriting PAGE_BTR_SEG_LEAF and + PAGE_BTR_SEG_TOP when splitting the B-tree root. This caused + corruption of compressed tables. Furthermore, the lock table and + the adaptive hash index would be corrupted, because we forgot to + update them when invoking page_zip_copy_recs(). + + Introduce the symbol UNIV_ZIP_DEBUG for triggering the copying of + compressed pages more often, for debugging purposes. + +2008-10-10 The InnoDB Team + + * handler/handler0alter.cc, include/row0merge.h, row/row0merge.c, + row/row0mysql.c: + Fix some locking issues, mainly in fast index creation. The + InnoDB data dictionary cache should be latched whenever a + transaction is holding locks on any data dictionary tables. + Otherwise, lock waits or deadlocks could occur. Furthermore, the + data dictionary transaction must be committed (and the locks + released) before the data dictionary latch is released. + + ha_innobase::add_index(): Lock the data dictionary before renaming + or dropping the created indexes, because neither operation will + commit the data dictionary transaction. + + ha_innobase::final_drop_index(): Commit the transactions before + unlocking the data dictionary. + +2008-10-09 The InnoDB Team + + * buf/buf0lru.c: + Fix Bug#39939 DROP TABLE/DISCARD TABLESPACE takes long time in + buf_LRU_invalidate_tablespace() + +2008-10-08 The InnoDB Team + + * dict/dict0crea.c, trx/trx0roll.c, include/row0mysql.h, + row/row0merge.c, row/row0mysql.c: + When dropping a table, hold the data dictionary latch until the + transaction has been committed. The data dictionary latch is + supposed to prevent lock waits and deadlocks in the data + dictionary tables. Due to this bug, DROP TABLE could cause a + deadlock or hang. Note that because of Bug#33650 and Bug#39833, + MySQL may also drop a (temporary) table when executing CREATE INDEX + or ALTER TABLE ... ADD INDEX. + +2008-10-04 The InnoDB Team + + * handler/ha_innodb.cc, mysql-test/innodb_bug39438-master.opt, + mysql-test/innodb_bug39438.result, mysql-test/innodb_bug39438.test: + Fix Bug#39438 Testcase for Bug#39436 crashes on 5.1 in + fil_space_get_latch + +2008-10-04 The InnoDB Team + + * include/lock0lock.h, lock/lock0lock.c, + mysql-test/innodb_bug38231.result, mysql-test/innodb_bug38231.test, + row/row0mysql.c: + Fix Bug#38231 Innodb crash in lock_reset_all_on_table() on TRUNCATE + + LOCK / UNLOCK + +2008-10-04 The InnoDB Team + + * handler/ha_innodb.cc: + Fix Bug#35498 Cannot get table test/table1 auto-inccounter value in + ::info + +2008-10-04 The InnoDB Team + + * handler/ha_innodb.cc, handler/ha_innodb.h: + Fix Bug#37788 InnoDB Plugin: AUTO_INCREMENT wrong for compressed + tables + +2008-10-04 The InnoDB Team + + * dict/dict0dict.c, handler/ha_innodb.cc, handler/ha_innodb.h, + include/dict0dict.h, include/dict0mem.h, row/row0mysql.c: + Fix Bug#39830 Table autoinc value not updated on first insert + +2008-10-03 The InnoDB Team + + * mysql-test/innodb-index.test, mysql-test/innodb-index.result, + mysql-test/innodb-timeout.test, mysql-test/innodb-timeout.result, + srv/srv0srv.c, include/srv0srv.h, handler/ha_innodb.cc, + include/ha_prototypes.h: + Fix Bug#36285 innodb_lock_wait_timeout is not dynamic, not per session + +2008-09-19 The InnoDB Team + + * os/os0proc.c: + Fix a memory leak on Windows. The memory leak was due to wrong + parameters passed into VirtualFree() call. As the result, the + call fails with Windows error 87. + +2008-09-17 The InnoDB Team + + * mysql-test/innodb.result, mysql-test/innodb-zip.result, + mysql-test/innodb-zip.test, mysql-test/innodb.test, ibuf/ibuf0ibuf.c, + dict/dict0crea.c, dict/dict0load.c, dict/dict0boot.c, + include/dict0dict.h, include/trx0trx.h, dict/dict0dict.c, + trx/trx0trx.c, include/ha_prototypes.h, handler/ha_innodb.cc: + When creating an index in innodb_strict_mode, check that the + maximum record size will never exceed the B-tree page size limit. + For uncompressed tables, there should always be enough space for + two records in an empty B-tree page. For compressed tables, there + should be enough space for storing two node pointer records or one + data record in an empty page in uncompressed format. + The purpose of this check is to guarantee that INSERT or UPDATE + will never fail due to too big record size. + +2008-09-17 The InnoDB Team + + * btr/btr0cur.c, data/data0data.c, include/page0zip.h, + include/page0zip.ic, page/page0zip.c, mysql-test/innodb_bug36172.test: + Prevent infinite B-tree page splits in compressed tables by + ensuring that there will always be enough space for two node + pointer records in an empty B-tree page. Also, require that at + least one data record will fit in an empty compressed page. This + will reduce the maximum size of records in compressed tables. + +2008-09-09 The InnoDB Team + + * mysql-test/innodb.result: + Fix the failing innodb test by merging changes that MySQL made to + that file (r2646.12.1 in MySQL BZR repository) + +2008-09-09 The InnoDB Team + + * handler/ha_innodb.cc, mysql-test/innodb-autoinc.result, + mysql-test/innodb-autoinc.test: + Fix Bug#38839 auto increment does not work properly with InnoDB after + update + +2008-09-09 The InnoDB Team + + * dict/dict0dict.c, handler/handler0alter.cc, include/dict0dict.h, + mysql-test/innodb-index.result, mysql-test/innodb-index.test: + Fix Bug#38786 InnoDB plugin crashes on drop table/create table with FK + +2008-08-21 The InnoDB Team + + * handler/ha_innodb.cc, include/ha_prototypes.h, row/row0sel.c: + Fix Bug#37885 row_search_for_mysql may gap lock unnecessarily with SQL + comments in query + +2008-08-21 The InnoDB Team + + * handler/ha_innodb.cc: + Fix Bug#38185 ha_innobase::info can hold locks even when called with + HA_STATUS_NO_LOCK + +2008-08-18 The InnoDB Team + + * buf/buf0buf.c, buf/buf0lru.c, include/buf0buf.ic, include/univ.i: + Introduce UNIV_LRU_DEBUG for debugging the LRU buffer pool cache + +2008-08-08 The InnoDB Team + + * buf/buf0lru.c, include/buf0buf.h: + Fix two recovery bugs that could lead to a crash in debug builds with + small buffer size + +2008-08-07 The InnoDB Team + + * btr/btr0cur.c, handler/ha_innodb.cc, include/srv0srv.h, + srv/srv0srv.c: + Add a parameter innodb_stats_sample_pages to allow users to control + the number of index dives when InnoDB estimates the cardinality of + an index (ANALYZE TABLE, SHOW TABLE STATUS etc) + +2008-08-07 The InnoDB Team + + * trx/trx0i_s.c: + Fix a bug that would lead to a crash if a SELECT was issued from the + INFORMATION_SCHEMA tables and there are rolling back transactions at + the same time + +2008-08-06 The InnoDB Team + + * btr/btr0btr.c, btr/btr0cur.c, ibuf/ibuf0ibuf.c, include/btr0cur.h, + include/trx0roll.h, include/trx0types.h, row/row0purge.c, + row/row0uins.c, row/row0umod.c, trx/trx0roll.c: + In the rollback of incomplete transactions after crash recovery, + tolerate clustered index records whose externally stored columns + have not been written. + +2008-07-30 The InnoDB Team + + * trx/trx0trx.c: + Fixes a race in recovery where the recovery thread recovering a + PREPARED trx and the background rollback thread can both try + to free the trx after its status is set to COMMITTED_IN_MEMORY. + +2008-07-29 The InnoDB Team + + * include/trx0rec.h, row/row0purge.c, row/row0vers.c, trx/trx0rec.c: + Fix a BLOB corruption bug + +2008-07-15 The InnoDB Team + + * btr/btr0sea.c, dict/dict0dict.c, include/btr0sea.h: + Fixed a timing hole where a thread dropping an index can free the + in-memory index struct while another thread is still using that + structure to remove entries from adaptive hash index belonging + to one of the pages that belongs to the index being dropped. + +2008-07-04 The InnoDB Team + + * mysql-test/innodb-index.result: + Fix the failing innodb-index test by adjusting the result to a new + MySQL behavior (the change occured in BZR-r2667) + +2008-07-03 The InnoDB Team + + * mysql-test/innodb-zip.result, mysql-test/innodb-zip.test: + Remove the negative test cases that produce warnings + +2008-07-02 The InnoDB Team + + * mysql-test/innodb-replace.result, mysql-test/innodb-index.test: + Disable part of innodb-index test because MySQL changed its behavior + and is not calling ::add_index() anymore when adding primary index on + non-NULL column + +2008-07-01 The InnoDB Team + + * mysql-test/innodb-replace.result, mysql-test/innodb-replace.test: + Fix the failing innodb-replace test by merging changes that MySQL + made to that file (r2659 in MySQL BZR repository) + +2008-07-01 The InnoDB Team + + * lock/lock0lock.c: + Fix Bug#36942 Performance problem in lock_get_n_rec_locks (SHOW INNODB + STATUS) + +2008-07-01 The InnoDB Team + + * ha/ha0ha.c: + Fix Bug#36941 Performance problem in ha_print_info (SHOW INNODB + STATUS) + +2008-07-01 The InnoDB Team + + * handler/ha_innodb.cc, mysql-test/innodb-autoinc.result, + mysql-test/innodb-autoinc.test: + Fix Bug#37531 After truncate, auto_increment behaves incorrectly for + InnoDB + +2008-06-19 The InnoDB Team + + * handler/ha_innodb.cc: + Rewrite the function innodb_plugin_init() to support parameters in + different order (in static and dynamic InnoDB) and to support more + parameters in the static InnoDB + +2008-06-19 The InnoDB Team + + * handler/handler0alter.cc: + Fix a bug in ::add_index() which set the transaction state to "active" + but never restored it to the original value. This bug caused warnings + to be printed by the rpl.rpl_ddl mysql-test. + +2008-06-19 The InnoDB Team + + * mysql-test/patches: + Add a directory which contains patches, which need to be applied to + MySQL source in order to get some mysql-tests to succeed. The patches + cannot be committed in MySQL repository because they are specific to + the InnoDB plugin. + +2008-06-19 The InnoDB Team + + * mysql-test/innodb-zip.result, mysql-test/innodb-zip.test, + row/row0row.c: + Fix an anomaly when updating a record with BLOB prefix + +2008-06-18 The InnoDB Team + + * include/trx0sys.h, srv/srv0start.c, trx/trx0sys.c: + Fix a bug in recovery which was a side effect of the file_format_check + changes + +2008-06-09 The InnoDB Team + + * mysql-test/innodb.result: + Fix the failing innodb test by merging changes that MySQL made to that + file + +2008-06-06 The InnoDB Team + + * buf/buf0buf.c, handler/ha_innodb.cc, include/buf0buf.h, + include/srv0srv.h, srv/srv0srv.c: + Fix Bug#36600 SHOW STATUS takes a lot of CPU in + buf_get_latched_pages_number + + * handler/ha_innodb.cc, os/os0file.c: + Fix Bug#11894 innodb_file_per_table crashes w/ Windows .sym symbolic + link hack + + * include/ut0ut.h, srv/srv0srv.c, ut/ut0ut.c: + Fix Bug#36819 ut_usectime does not handle errors from gettimeofday + + * handler/ha_innodb.cc: + Fix Bug#35602 Failed to read auto-increment value from storage engine + + * srv/srv0start.c: + Fix Bug#36149 Read buffer overflow in srv0start.c found during "make + test" + +2008-05-08 The InnoDB Team + + * btr/btr0btr.c, mysql-test/innodb_bug36172.result, + mysql-test/innodb_bug36172.test: + Fix Bug#36172 insert into compressed innodb table crashes + +2008-05-08 The InnoDB Team + + InnoDB Plugin 1.0.1 released + +2008-05-06 The InnoDB Team + + * handler/ha_innodb.cc, include/srv0srv.h, include/sync0sync.h, + include/trx0sys.h, mysql-test/innodb-zip.result, + mysql-test/innodb-zip.test, srv/srv0srv.c, srv/srv0start.c, + sync/sync0sync.c, trx/trx0sys.c: + Implement the system tablespace tagging + + * handler/ha_innodb.cc, handler/i_s.cc, include/univ.i, + srv/srv0start.c: + Add InnoDB version in INFORMATION_SCHEMA.PLUGINS.PLUGIN_VERSION, + in the startup message and in a server variable innodb_version. + + * sync/sync0sync.c: + Fix a bug in the sync debug code where a lock with level + SYNC_LEVEL_VARYING would cause an assertion failure when a thread + tried to release it. + +2008-04-30 The InnoDB Team + + * Makefile.am: + Fix Bug#36434 ha_innodb.so is installed in the wrong directory + + * handler/ha_innodb.cc: + Merge change from MySQL (Fix Bug#35406 5.1-opt crashes on select from + I_S.REFERENTIAL_CONSTRAINTS): + ChangeSet(a)1.2563, 2008-03-18 19:42:04+04:00, gluh(a)mysql.com +1 -0 + + * scripts/install_innodb_plugins.sql: + Added + + * mysql-test/innodb.result: + Merge change from MySQL (this fixes the failing innodb test): + ChangeSet(a)1.1810.3601.4, 2008-02-07 02:33:21+04:00 + + * row/row0sel.c: + Fix Bug#35226 RBR event crashes slave + + * handler/ha_innodb.cc: + Change the fix for Bug#32440 to show bytes instead of kilobytes in + INFORMATION_SCHEMA.TABLES.DATA_FREE + + * handler/ha_innodb.cc, mysql-test/innodb.result, + mysql-test/innodb.test: + Fix Bug#29507 TRUNCATE shows to many rows effected + + * handler/ha_innodb.cc, mysql-test/innodb.result, + mysql-test/innodb.test: + Fix Bug#35537 Innodb doesn't increment handler_update and + handler_delete + +2008-04-29 The InnoDB Team + + * handler/i_s.cc, include/srv0start.h, srv/srv0start.c: + Fix Bug#36310 InnoDB plugin crash + +2008-04-23 The InnoDB Team + + * mysql-test/innodb_bug36169.result, mysql-test/innodb_bug36169.test, + row/row0mysql.c: + Fix Bug#36169 create innodb compressed table with too large row size + crashed + + * (outside the source tree): + Fix Bug#36222 New InnoDB plugin 1.0 has wrong MKDIR_P defined in + Makefile.in + +2008-04-15 The InnoDB Team + + InnoDB Plugin 1.0.0 released === added file 'storage/xtradb/Makefile.am' --- a/storage/xtradb/Makefile.am 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/Makefile.am 2009-06-09 12:21:26 +0000 @@ -0,0 +1,195 @@ +# Copyright (C) 2001, 2004, 2006 MySQL AB & Innobase Oy +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; version 2 of the License. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software +# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + +# Process this file with automake to create Makefile.in + +MYSQLDATAdir= $(localstatedir) +MYSQLSHAREdir= $(pkgdatadir) +MYSQLBASEdir= $(prefix) +MYSQLLIBdir= $(pkglibdir) +pkgplugindir= $(pkglibdir)/plugin +INCLUDES= -I$(top_srcdir)/include -I$(top_builddir)/include \ + -I$(top_srcdir)/regex \ + -I$(top_srcdir)/storage/xtradb/include \ + -I$(top_srcdir)/sql \ + -I$(srcdir) + +DEFS= @DEFS@ + + +noinst_HEADERS= include/btr0btr.h include/btr0btr.ic \ + include/btr0cur.h include/btr0cur.ic \ + include/btr0pcur.h include/btr0pcur.ic \ + include/btr0sea.h include/btr0sea.ic \ + include/btr0types.h include/buf0buddy.h \ + include/buf0buddy.ic include/buf0buf.h \ + include/buf0buf.ic include/buf0flu.h \ + include/buf0flu.ic include/buf0lru.h \ + include/buf0lru.ic include/buf0rea.h \ + include/buf0types.h include/data0data.h \ + include/data0data.ic include/data0type.h \ + include/data0type.ic include/data0types.h \ + include/db0err.h include/dict0boot.h \ + include/dict0boot.ic include/dict0crea.h \ + include/dict0crea.ic include/dict0dict.h \ + include/dict0dict.ic include/dict0load.h \ + include/dict0load.ic include/dict0mem.h \ + include/dict0mem.ic include/dict0types.h \ + include/dyn0dyn.h include/dyn0dyn.ic \ + include/eval0eval.h include/eval0eval.ic \ + include/eval0proc.h include/eval0proc.ic \ + include/fil0fil.h include/fsp0fsp.h \ + include/fsp0fsp.ic include/fut0fut.h \ + include/fut0fut.ic include/fut0lst.h \ + include/fut0lst.ic include/ha0ha.h \ + include/ha0ha.ic \ + include/ha0storage.h \ + include/ha0storage.ic \ + include/hash0hash.h \ + include/hash0hash.ic include/ibuf0ibuf.h \ + include/ibuf0ibuf.ic include/ibuf0types.h \ + include/lock0iter.h \ + include/lock0lock.h include/lock0lock.ic \ + include/lock0priv.h include/lock0priv.ic \ + include/lock0types.h include/log0log.h \ + include/log0log.ic include/log0recv.h \ + include/log0recv.ic include/mach0data.h \ + include/mach0data.ic include/mem0dbg.h \ + include/mem0dbg.ic mem/mem0dbg.c \ + include/mem0mem.h include/mem0mem.ic \ + include/mem0pool.h include/mem0pool.ic \ + include/mtr0log.h include/mtr0log.ic \ + include/mtr0mtr.h include/mtr0mtr.ic \ + include/mtr0types.h \ + include/mysql_addons.h \ + include/os0file.h \ + include/os0proc.h include/os0proc.ic \ + include/os0sync.h include/os0sync.ic \ + include/os0thread.h include/os0thread.ic \ + include/page0cur.h include/page0cur.ic \ + include/page0page.h include/page0page.ic \ + include/page0zip.h include/page0zip.ic \ + include/page0types.h include/pars0grm.h \ + include/pars0opt.h include/pars0opt.ic \ + include/pars0pars.h include/pars0pars.ic \ + include/pars0sym.h include/pars0sym.ic \ + include/pars0types.h include/que0que.h \ + include/que0que.ic include/que0types.h \ + include/read0read.h include/read0read.ic \ + include/read0types.h include/rem0cmp.h \ + include/rem0cmp.ic include/rem0rec.h \ + include/rem0rec.ic include/rem0types.h \ + include/row0ext.h include/row0ext.ic \ + include/row0ins.h include/row0ins.ic \ + include/row0merge.h \ + include/row0mysql.h include/row0mysql.ic \ + include/row0purge.h include/row0purge.ic \ + include/row0row.h include/row0row.ic \ + include/row0sel.h include/row0sel.ic \ + include/row0types.h include/row0uins.h \ + include/row0uins.ic include/row0umod.h \ + include/row0umod.ic include/row0undo.h \ + include/row0undo.ic include/row0upd.h \ + include/row0upd.ic include/row0vers.h \ + include/row0vers.ic include/srv0que.h \ + include/srv0srv.h include/srv0srv.ic \ + include/srv0start.h include/sync0arr.h \ + include/sync0arr.ic include/sync0rw.h \ + include/sync0rw.ic include/sync0sync.h \ + include/sync0sync.ic include/sync0types.h \ + include/thr0loc.h include/thr0loc.ic \ + include/trx0i_s.h \ + include/trx0purge.h include/trx0purge.ic \ + include/trx0rec.h include/trx0rec.ic \ + include/trx0roll.h include/trx0roll.ic \ + include/trx0rseg.h include/trx0rseg.ic \ + include/trx0sys.h include/trx0sys.ic \ + include/trx0trx.h include/trx0trx.ic \ + include/trx0types.h include/trx0undo.h \ + include/trx0undo.ic include/trx0xa.h \ + include/univ.i include/usr0sess.h \ + include/usr0sess.ic include/usr0types.h \ + include/ut0byte.h include/ut0byte.ic \ + include/ut0dbg.h include/ut0lst.h \ + include/ut0mem.h include/ut0mem.ic \ + include/ut0rnd.h include/ut0rnd.ic \ + include/ut0sort.h include/ut0ut.h \ + include/ut0ut.ic include/ut0vec.h \ + include/ut0vec.ic include/ut0list.h \ + include/ut0list.ic include/ut0wqueue.h \ + include/ha_prototypes.h handler/ha_innodb.h \ + include/handler0alter.h \ + handler/i_s.h handler/innodb_patch_info.h + +EXTRA_LIBRARIES= libinnobase.a +noinst_LIBRARIES= @plugin_innobase_static_target@ +libinnobase_a_SOURCES= btr/btr0btr.c btr/btr0cur.c btr/btr0pcur.c \ + btr/btr0sea.c buf/buf0buddy.c \ + buf/buf0buf.c buf/buf0flu.c \ + buf/buf0lru.c buf/buf0rea.c data/data0data.c \ + data/data0type.c dict/dict0boot.c \ + dict/dict0crea.c dict/dict0dict.c \ + dict/dict0load.c dict/dict0mem.c dyn/dyn0dyn.c \ + eval/eval0eval.c eval/eval0proc.c \ + fil/fil0fil.c fsp/fsp0fsp.c fut/fut0fut.c \ + fut/fut0lst.c ha/ha0ha.c \ + ha/ha0storage.c \ + ha/hash0hash.c \ + ibuf/ibuf0ibuf.c lock/lock0iter.c \ + lock/lock0lock.c \ + log/log0log.c log/log0recv.c mach/mach0data.c \ + mem/mem0mem.c mem/mem0pool.c mtr/mtr0log.c \ + mtr/mtr0mtr.c os/os0file.c os/os0proc.c \ + os/os0sync.c os/os0thread.c page/page0cur.c \ + page/page0page.c page/page0zip.c \ + pars/lexyy.c pars/pars0grm.c \ + pars/pars0opt.c pars/pars0pars.c \ + pars/pars0sym.c que/que0que.c read/read0read.c \ + rem/rem0cmp.c rem/rem0rec.c row/row0ext.c \ + row/row0ins.c row/row0merge.c \ + row/row0mysql.c row/row0purge.c row/row0row.c \ + row/row0sel.c row/row0uins.c row/row0umod.c \ + row/row0undo.c row/row0upd.c row/row0vers.c \ + srv/srv0que.c srv/srv0srv.c srv/srv0start.c \ + sync/sync0arr.c sync/sync0rw.c \ + sync/sync0sync.c thr/thr0loc.c \ + trx/trx0i_s.c \ + trx/trx0purge.c \ + trx/trx0rec.c trx/trx0roll.c trx/trx0rseg.c \ + trx/trx0sys.c trx/trx0trx.c trx/trx0undo.c \ + usr/usr0sess.c ut/ut0byte.c ut/ut0dbg.c \ + ut/ut0list.c ut/ut0mem.c ut/ut0rnd.c \ + ut/ut0ut.c ut/ut0vec.c ut/ut0wqueue.c \ + handler/ha_innodb.cc handler/handler0alter.cc \ + handler/i_s.cc \ + handler/mysql_addons.cc + +libinnobase_a_CXXFLAGS= $(AM_CFLAGS) +libinnobase_a_CFLAGS= $(AM_CFLAGS) + +EXTRA_LTLIBRARIES= ha_innodb.la +pkgplugin_LTLIBRARIES= @plugin_innobase_shared_target@ + +ha_innodb_la_LDFLAGS= -module -rpath $(pkgplugindir) +ha_innodb_la_CXXFLAGS= $(AM_CFLAGS) $(INNODB_DYNAMIC_CFLAGS) +ha_innodb_la_CFLAGS= $(AM_CFLAGS) $(INNODB_DYNAMIC_CFLAGS) +ha_innodb_la_SOURCES= $(libinnobase_a_SOURCES) + +EXTRA_DIST= CMakeLists.txt plug.in \ + pars/make_bison.sh pars/make_flex.sh \ + pars/pars0grm.y pars/pars0lex.l + +# Don't update the files from bitkeeper +%::SCCS/s.% === added directory 'storage/xtradb/btr' === added file 'storage/xtradb/btr/btr0btr.c' --- a/storage/xtradb/btr/btr0btr.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/btr/btr0btr.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,3656 @@ +/***************************************************************************** + +Copyright (c) 1994, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +The B-tree + +Created 6/2/1994 Heikki Tuuri +*******************************************************/ + +#include "btr0btr.h" + +#ifdef UNIV_NONINL +#include "btr0btr.ic" +#endif + +#include "fsp0fsp.h" +#include "page0page.h" +#include "page0zip.h" +#include "btr0cur.h" +#include "btr0sea.h" +#include "btr0pcur.h" +#include "rem0cmp.h" +#include "lock0lock.h" +#include "ibuf0ibuf.h" +#include "trx0trx.h" + +/* +Latching strategy of the InnoDB B-tree +-------------------------------------- +A tree latch protects all non-leaf nodes of the tree. Each node of a tree +also has a latch of its own. + +A B-tree operation normally first acquires an S-latch on the tree. It +searches down the tree and releases the tree latch when it has the +leaf node latch. To save CPU time we do not acquire any latch on +non-leaf nodes of the tree during a search, those pages are only bufferfixed. + +If an operation needs to restructure the tree, it acquires an X-latch on +the tree before searching to a leaf node. If it needs, for example, to +split a leaf, +(1) InnoDB decides the split point in the leaf, +(2) allocates a new page, +(3) inserts the appropriate node pointer to the first non-leaf level, +(4) releases the tree X-latch, +(5) and then moves records from the leaf to the new allocated page. + +Node pointers +------------- +Leaf pages of a B-tree contain the index records stored in the +tree. On levels n > 0 we store 'node pointers' to pages on level +n - 1. For each page there is exactly one node pointer stored: +thus the our tree is an ordinary B-tree, not a B-link tree. + +A node pointer contains a prefix P of an index record. The prefix +is long enough so that it determines an index record uniquely. +The file page number of the child page is added as the last +field. To the child page we can store node pointers or index records +which are >= P in the alphabetical order, but < P1 if there is +a next node pointer on the level, and P1 is its prefix. + +If a node pointer with a prefix P points to a non-leaf child, +then the leftmost record in the child must have the same +prefix P. If it points to a leaf node, the child is not required +to contain any record with a prefix equal to P. The leaf case +is decided this way to allow arbitrary deletions in a leaf node +without touching upper levels of the tree. + +We have predefined a special minimum record which we +define as the smallest record in any alphabetical order. +A minimum record is denoted by setting a bit in the record +header. A minimum record acts as the prefix of a node pointer +which points to a leftmost node on any level of the tree. + +File page allocation +-------------------- +In the root node of a B-tree there are two file segment headers. +The leaf pages of a tree are allocated from one file segment, to +make them consecutive on disk if possible. From the other file segment +we allocate pages for the non-leaf levels of the tree. +*/ + +#ifdef UNIV_BTR_DEBUG +/****************************************************************** +Checks a file segment header within a B-tree root page. */ +static +ibool +btr_root_fseg_validate( +/*===================*/ + /* out: TRUE if valid */ + const fseg_header_t* seg_header, /* in: segment header */ + ulint space) /* in: tablespace identifier */ +{ + ulint offset = mach_read_from_2(seg_header + FSEG_HDR_OFFSET); + + ut_a(mach_read_from_4(seg_header + FSEG_HDR_SPACE) == space); + ut_a(offset >= FIL_PAGE_DATA); + ut_a(offset <= UNIV_PAGE_SIZE - FIL_PAGE_DATA_END); + return(TRUE); +} +#endif /* UNIV_BTR_DEBUG */ + +/****************************************************************** +Gets the root node of a tree and x-latches it. */ +static +buf_block_t* +btr_root_block_get( +/*===============*/ + /* out: root page, x-latched */ + dict_index_t* index, /* in: index tree */ + mtr_t* mtr) /* in: mtr */ +{ + ulint space; + ulint zip_size; + ulint root_page_no; + buf_block_t* block; + + space = dict_index_get_space(index); + zip_size = dict_table_zip_size(index->table); + root_page_no = dict_index_get_page(index); + + block = btr_block_get(space, zip_size, root_page_no, RW_X_LATCH, mtr); + ut_a((ibool)!!page_is_comp(buf_block_get_frame(block)) + == dict_table_is_comp(index->table)); +#ifdef UNIV_BTR_DEBUG + if (!dict_index_is_ibuf(index)) { + const page_t* root = buf_block_get_frame(block); + + ut_a(btr_root_fseg_validate(FIL_PAGE_DATA + PAGE_BTR_SEG_LEAF + + root, space)); + ut_a(btr_root_fseg_validate(FIL_PAGE_DATA + PAGE_BTR_SEG_TOP + + root, space)); + } +#endif /* UNIV_BTR_DEBUG */ + + return(block); +} + +/****************************************************************** +Gets the root node of a tree and x-latches it. */ +UNIV_INTERN +page_t* +btr_root_get( +/*=========*/ + /* out: root page, x-latched */ + dict_index_t* index, /* in: index tree */ + mtr_t* mtr) /* in: mtr */ +{ + return(buf_block_get_frame(btr_root_block_get(index, mtr))); +} + +/***************************************************************** +Gets pointer to the previous user record in the tree. It is assumed that +the caller has appropriate latches on the page and its neighbor. */ +UNIV_INTERN +rec_t* +btr_get_prev_user_rec( +/*==================*/ + /* out: previous user record, NULL if there is none */ + rec_t* rec, /* in: record on leaf level */ + mtr_t* mtr) /* in: mtr holding a latch on the page, and if + needed, also to the previous page */ +{ + page_t* page; + page_t* prev_page; + ulint prev_page_no; + + if (!page_rec_is_infimum(rec)) { + + rec_t* prev_rec = page_rec_get_prev(rec); + + if (!page_rec_is_infimum(prev_rec)) { + + return(prev_rec); + } + } + + page = page_align(rec); + prev_page_no = btr_page_get_prev(page, mtr); + + if (prev_page_no != FIL_NULL) { + + ulint space; + ulint zip_size; + buf_block_t* prev_block; + + space = page_get_space_id(page); + zip_size = fil_space_get_zip_size(space); + + prev_block = buf_page_get_with_no_latch(space, zip_size, + prev_page_no, mtr); + prev_page = buf_block_get_frame(prev_block); + /* The caller must already have a latch to the brother */ + ut_ad(mtr_memo_contains(mtr, prev_block, + MTR_MEMO_PAGE_S_FIX) + || mtr_memo_contains(mtr, prev_block, + MTR_MEMO_PAGE_X_FIX)); +#ifdef UNIV_BTR_DEBUG + ut_a(page_is_comp(prev_page) == page_is_comp(page)); + ut_a(btr_page_get_next(prev_page, mtr) + == page_get_page_no(page)); +#endif /* UNIV_BTR_DEBUG */ + + return(page_rec_get_prev(page_get_supremum_rec(prev_page))); + } + + return(NULL); +} + +/***************************************************************** +Gets pointer to the next user record in the tree. It is assumed that the +caller has appropriate latches on the page and its neighbor. */ +UNIV_INTERN +rec_t* +btr_get_next_user_rec( +/*==================*/ + /* out: next user record, NULL if there is none */ + rec_t* rec, /* in: record on leaf level */ + mtr_t* mtr) /* in: mtr holding a latch on the page, and if + needed, also to the next page */ +{ + page_t* page; + page_t* next_page; + ulint next_page_no; + + if (!page_rec_is_supremum(rec)) { + + rec_t* next_rec = page_rec_get_next(rec); + + if (!page_rec_is_supremum(next_rec)) { + + return(next_rec); + } + } + + page = page_align(rec); + next_page_no = btr_page_get_next(page, mtr); + + if (next_page_no != FIL_NULL) { + ulint space; + ulint zip_size; + buf_block_t* next_block; + + space = page_get_space_id(page); + zip_size = fil_space_get_zip_size(space); + + next_block = buf_page_get_with_no_latch(space, zip_size, + next_page_no, mtr); + next_page = buf_block_get_frame(next_block); + /* The caller must already have a latch to the brother */ + ut_ad(mtr_memo_contains(mtr, next_block, MTR_MEMO_PAGE_S_FIX) + || mtr_memo_contains(mtr, next_block, + MTR_MEMO_PAGE_X_FIX)); +#ifdef UNIV_BTR_DEBUG + ut_a(page_is_comp(next_page) == page_is_comp(page)); + ut_a(btr_page_get_prev(next_page, mtr) + == page_get_page_no(page)); +#endif /* UNIV_BTR_DEBUG */ + + return(page_rec_get_next(page_get_infimum_rec(next_page))); + } + + return(NULL); +} + +/****************************************************************** +Creates a new index page (not the root, and also not +used in page reorganization). @see btr_page_empty(). */ +static +void +btr_page_create( +/*============*/ + buf_block_t* block, /* in/out: page to be created */ + page_zip_des_t* page_zip,/* in/out: compressed page, or NULL */ + dict_index_t* index, /* in: index */ + ulint level, /* in: the B-tree level of the page */ + mtr_t* mtr) /* in: mtr */ +{ + page_t* page = buf_block_get_frame(block); + + ut_ad(mtr_memo_contains(mtr, block, MTR_MEMO_PAGE_X_FIX)); + + if (UNIV_LIKELY_NULL(page_zip)) { + page_create_zip(block, index, level, mtr); + } else { + page_create(block, mtr, dict_table_is_comp(index->table)); + /* Set the level of the new index page */ + btr_page_set_level(page, NULL, level, mtr); + } + + block->check_index_page_at_flush = TRUE; + + btr_page_set_index_id(page, page_zip, index->id, mtr); +} + +/****************************************************************** +Allocates a new file page to be used in an ibuf tree. Takes the page from +the free list of the tree, which must contain pages! */ +static +buf_block_t* +btr_page_alloc_for_ibuf( +/*====================*/ + /* out: new allocated block, x-latched */ + dict_index_t* index, /* in: index tree */ + mtr_t* mtr) /* in: mtr */ +{ + fil_addr_t node_addr; + page_t* root; + page_t* new_page; + buf_block_t* new_block; + + root = btr_root_get(index, mtr); + + node_addr = flst_get_first(root + PAGE_HEADER + + PAGE_BTR_IBUF_FREE_LIST, mtr); + ut_a(node_addr.page != FIL_NULL); + + new_block = buf_page_get(dict_index_get_space(index), + dict_table_zip_size(index->table), + node_addr.page, RW_X_LATCH, mtr); + new_page = buf_block_get_frame(new_block); + buf_block_dbg_add_level(new_block, SYNC_TREE_NODE_NEW); + + flst_remove(root + PAGE_HEADER + PAGE_BTR_IBUF_FREE_LIST, + new_page + PAGE_HEADER + PAGE_BTR_IBUF_FREE_LIST_NODE, + mtr); + ut_ad(flst_validate(root + PAGE_HEADER + PAGE_BTR_IBUF_FREE_LIST, + mtr)); + + return(new_block); +} + +/****************************************************************** +Allocates a new file page to be used in an index tree. NOTE: we assume +that the caller has made the reservation for free extents! */ +UNIV_INTERN +buf_block_t* +btr_page_alloc( +/*===========*/ + /* out: new allocated block, x-latched; + NULL if out of space */ + dict_index_t* index, /* in: index */ + ulint hint_page_no, /* in: hint of a good page */ + byte file_direction, /* in: direction where a possible + page split is made */ + ulint level, /* in: level where the page is placed + in the tree */ + mtr_t* mtr) /* in: mtr */ +{ + fseg_header_t* seg_header; + page_t* root; + buf_block_t* new_block; + ulint new_page_no; + + if (dict_index_is_ibuf(index)) { + + return(btr_page_alloc_for_ibuf(index, mtr)); + } + + root = btr_root_get(index, mtr); + + if (level == 0) { + seg_header = root + PAGE_HEADER + PAGE_BTR_SEG_LEAF; + } else { + seg_header = root + PAGE_HEADER + PAGE_BTR_SEG_TOP; + } + + /* Parameter TRUE below states that the caller has made the + reservation for free extents, and thus we know that a page can + be allocated: */ + + new_page_no = fseg_alloc_free_page_general(seg_header, hint_page_no, + file_direction, TRUE, mtr); + if (new_page_no == FIL_NULL) { + + return(NULL); + } + + new_block = buf_page_get(dict_index_get_space(index), + dict_table_zip_size(index->table), + new_page_no, RW_X_LATCH, mtr); + buf_block_dbg_add_level(new_block, SYNC_TREE_NODE_NEW); + + return(new_block); +} + +/****************************************************************** +Gets the number of pages in a B-tree. */ +UNIV_INTERN +ulint +btr_get_size( +/*=========*/ + /* out: number of pages */ + dict_index_t* index, /* in: index */ + ulint flag) /* in: BTR_N_LEAF_PAGES or BTR_TOTAL_SIZE */ +{ + fseg_header_t* seg_header; + page_t* root; + ulint n; + ulint dummy; + mtr_t mtr; + + mtr_start(&mtr); + + mtr_s_lock(dict_index_get_lock(index), &mtr); + + root = btr_root_get(index, &mtr); + + if (flag == BTR_N_LEAF_PAGES) { + seg_header = root + PAGE_HEADER + PAGE_BTR_SEG_LEAF; + + fseg_n_reserved_pages(seg_header, &n, &mtr); + + } else if (flag == BTR_TOTAL_SIZE) { + seg_header = root + PAGE_HEADER + PAGE_BTR_SEG_TOP; + + n = fseg_n_reserved_pages(seg_header, &dummy, &mtr); + + seg_header = root + PAGE_HEADER + PAGE_BTR_SEG_LEAF; + + n += fseg_n_reserved_pages(seg_header, &dummy, &mtr); + } else { + ut_error; + } + + mtr_commit(&mtr); + + return(n); +} + +/****************************************************************** +Frees a page used in an ibuf tree. Puts the page to the free list of the +ibuf tree. */ +static +void +btr_page_free_for_ibuf( +/*===================*/ + dict_index_t* index, /* in: index tree */ + buf_block_t* block, /* in: block to be freed, x-latched */ + mtr_t* mtr) /* in: mtr */ +{ + page_t* root; + + ut_ad(mtr_memo_contains(mtr, block, MTR_MEMO_PAGE_X_FIX)); + root = btr_root_get(index, mtr); + + flst_add_first(root + PAGE_HEADER + PAGE_BTR_IBUF_FREE_LIST, + buf_block_get_frame(block) + + PAGE_HEADER + PAGE_BTR_IBUF_FREE_LIST_NODE, mtr); + + ut_ad(flst_validate(root + PAGE_HEADER + PAGE_BTR_IBUF_FREE_LIST, + mtr)); +} + +/****************************************************************** +Frees a file page used in an index tree. Can be used also to (BLOB) +external storage pages, because the page level 0 can be given as an +argument. */ +UNIV_INTERN +void +btr_page_free_low( +/*==============*/ + dict_index_t* index, /* in: index tree */ + buf_block_t* block, /* in: block to be freed, x-latched */ + ulint level, /* in: page level */ + mtr_t* mtr) /* in: mtr */ +{ + fseg_header_t* seg_header; + page_t* root; + + ut_ad(mtr_memo_contains(mtr, block, MTR_MEMO_PAGE_X_FIX)); + /* The page gets invalid for optimistic searches: increment the frame + modify clock */ + + buf_block_modify_clock_inc(block); + + if (dict_index_is_ibuf(index)) { + + btr_page_free_for_ibuf(index, block, mtr); + + return; + } + + root = btr_root_get(index, mtr); + + if (level == 0) { + seg_header = root + PAGE_HEADER + PAGE_BTR_SEG_LEAF; + } else { + seg_header = root + PAGE_HEADER + PAGE_BTR_SEG_TOP; + } + + fseg_free_page(seg_header, + buf_block_get_space(block), + buf_block_get_page_no(block), mtr); +} + +/****************************************************************** +Frees a file page used in an index tree. NOTE: cannot free field external +storage pages because the page must contain info on its level. */ +UNIV_INTERN +void +btr_page_free( +/*==========*/ + dict_index_t* index, /* in: index tree */ + buf_block_t* block, /* in: block to be freed, x-latched */ + mtr_t* mtr) /* in: mtr */ +{ + ulint level; + + level = btr_page_get_level(buf_block_get_frame(block), mtr); + + btr_page_free_low(index, block, level, mtr); +} + +/****************************************************************** +Sets the child node file address in a node pointer. */ +UNIV_INLINE +void +btr_node_ptr_set_child_page_no( +/*===========================*/ + rec_t* rec, /* in: node pointer record */ + page_zip_des_t* page_zip,/* in/out: compressed page whose uncompressed + part will be updated, or NULL */ + const ulint* offsets,/* in: array returned by rec_get_offsets() */ + ulint page_no,/* in: child node address */ + mtr_t* mtr) /* in: mtr */ +{ + byte* field; + ulint len; + + ut_ad(rec_offs_validate(rec, NULL, offsets)); + ut_ad(!page_is_leaf(page_align(rec))); + ut_ad(!rec_offs_comp(offsets) || rec_get_node_ptr_flag(rec)); + + /* The child address is in the last field */ + field = rec_get_nth_field(rec, offsets, + rec_offs_n_fields(offsets) - 1, &len); + + ut_ad(len == REC_NODE_PTR_SIZE); + + if (UNIV_LIKELY_NULL(page_zip)) { + page_zip_write_node_ptr(page_zip, rec, + rec_offs_data_size(offsets), + page_no, mtr); + } else { + mlog_write_ulint(field, page_no, MLOG_4BYTES, mtr); + } +} + +/**************************************************************** +Returns the child page of a node pointer and x-latches it. */ +static +buf_block_t* +btr_node_ptr_get_child( +/*===================*/ + /* out: child page, x-latched */ + const rec_t* node_ptr,/* in: node pointer */ + dict_index_t* index, /* in: index */ + const ulint* offsets,/* in: array returned by rec_get_offsets() */ + mtr_t* mtr) /* in: mtr */ +{ + ulint page_no; + ulint space; + + ut_ad(rec_offs_validate(node_ptr, index, offsets)); + space = page_get_space_id(page_align(node_ptr)); + page_no = btr_node_ptr_get_child_page_no(node_ptr, offsets); + + return(btr_block_get(space, dict_table_zip_size(index->table), + page_no, RW_X_LATCH, mtr)); +} + +/**************************************************************** +Returns the upper level node pointer to a page. It is assumed that mtr holds +an x-latch on the tree. */ +static +ulint* +btr_page_get_father_node_ptr( +/*=========================*/ + /* out: rec_get_offsets() of the + node pointer record */ + ulint* offsets,/* in: work area for the return value */ + mem_heap_t* heap, /* in: memory heap to use */ + btr_cur_t* cursor, /* in: cursor pointing to user record, + out: cursor on node pointer record, + its page x-latched */ + mtr_t* mtr) /* in: mtr */ +{ + dtuple_t* tuple; + rec_t* user_rec; + rec_t* node_ptr; + ulint level; + ulint page_no; + dict_index_t* index; + + page_no = buf_block_get_page_no(btr_cur_get_block(cursor)); + index = btr_cur_get_index(cursor); + + ut_ad(mtr_memo_contains(mtr, dict_index_get_lock(index), + MTR_MEMO_X_LOCK)); + + ut_ad(dict_index_get_page(index) != page_no); + + level = btr_page_get_level(btr_cur_get_page(cursor), mtr); + user_rec = btr_cur_get_rec(cursor); + ut_a(page_rec_is_user_rec(user_rec)); + tuple = dict_index_build_node_ptr(index, user_rec, 0, heap, level); + + btr_cur_search_to_nth_level(index, level + 1, tuple, PAGE_CUR_LE, + BTR_CONT_MODIFY_TREE, cursor, 0, mtr); + + node_ptr = btr_cur_get_rec(cursor); + ut_ad(!page_rec_is_comp(node_ptr) + || rec_get_status(node_ptr) == REC_STATUS_NODE_PTR); + offsets = rec_get_offsets(node_ptr, index, offsets, + ULINT_UNDEFINED, &heap); + + if (UNIV_UNLIKELY(btr_node_ptr_get_child_page_no(node_ptr, offsets) + != page_no)) { + rec_t* print_rec; + fputs("InnoDB: Dump of the child page:\n", stderr); + buf_page_print(page_align(user_rec), 0); + fputs("InnoDB: Dump of the parent page:\n", stderr); + buf_page_print(page_align(node_ptr), 0); + + fputs("InnoDB: Corruption of an index tree: table ", stderr); + ut_print_name(stderr, NULL, TRUE, index->table_name); + fputs(", index ", stderr); + ut_print_name(stderr, NULL, FALSE, index->name); + fprintf(stderr, ",\n" + "InnoDB: father ptr page no %lu, child page no %lu\n", + (ulong) + btr_node_ptr_get_child_page_no(node_ptr, offsets), + (ulong) page_no); + print_rec = page_rec_get_next( + page_get_infimum_rec(page_align(user_rec))); + offsets = rec_get_offsets(print_rec, index, + offsets, ULINT_UNDEFINED, &heap); + page_rec_print(print_rec, offsets); + offsets = rec_get_offsets(node_ptr, index, offsets, + ULINT_UNDEFINED, &heap); + page_rec_print(node_ptr, offsets); + + fputs("InnoDB: You should dump + drop + reimport the table" + " to fix the\n" + "InnoDB: corruption. If the crash happens at " + "the database startup, see\n" + "InnoDB: http://dev.mysql.com/doc/refman/5.1/en/" + "forcing-recovery.html about\n" + "InnoDB: forcing recovery. " + "Then dump + drop + reimport.\n", stderr); + + ut_error; + } + + return(offsets); +} + +/**************************************************************** +Returns the upper level node pointer to a page. It is assumed that mtr holds +an x-latch on the tree. */ +static +ulint* +btr_page_get_father_block( +/*======================*/ + /* out: rec_get_offsets() of the + node pointer record */ + ulint* offsets,/* in: work area for the return value */ + mem_heap_t* heap, /* in: memory heap to use */ + dict_index_t* index, /* in: b-tree index */ + buf_block_t* block, /* in: child page in the index */ + mtr_t* mtr, /* in: mtr */ + btr_cur_t* cursor) /* out: cursor on node pointer record, + its page x-latched */ +{ + rec_t* rec + = page_rec_get_next(page_get_infimum_rec(buf_block_get_frame( + block))); + btr_cur_position(index, rec, block, cursor); + return(btr_page_get_father_node_ptr(offsets, heap, cursor, mtr)); +} + +/**************************************************************** +Seeks to the upper level node pointer to a page. +It is assumed that mtr holds an x-latch on the tree. */ +static +void +btr_page_get_father( +/*================*/ + dict_index_t* index, /* in: b-tree index */ + buf_block_t* block, /* in: child page in the index */ + mtr_t* mtr, /* in: mtr */ + btr_cur_t* cursor) /* out: cursor on node pointer record, + its page x-latched */ +{ + mem_heap_t* heap; + rec_t* rec + = page_rec_get_next(page_get_infimum_rec(buf_block_get_frame( + block))); + btr_cur_position(index, rec, block, cursor); + + heap = mem_heap_create(100); + btr_page_get_father_node_ptr(NULL, heap, cursor, mtr); + mem_heap_free(heap); +} + +/**************************************************************** +Creates the root node for a new index tree. */ +UNIV_INTERN +ulint +btr_create( +/*=======*/ + /* out: page number of the created root, + FIL_NULL if did not succeed */ + ulint type, /* in: type of the index */ + ulint space, /* in: space where created */ + ulint zip_size,/* in: compressed page size in bytes + or 0 for uncompressed pages */ + dulint index_id,/* in: index id */ + dict_index_t* index, /* in: index */ + mtr_t* mtr) /* in: mini-transaction handle */ +{ + ulint page_no; + buf_block_t* block; + buf_frame_t* frame; + page_t* page; + page_zip_des_t* page_zip; + + /* Create the two new segments (one, in the case of an ibuf tree) for + the index tree; the segment headers are put on the allocated root page + (for an ibuf tree, not in the root, but on a separate ibuf header + page) */ + + if (type & DICT_IBUF) { + /* Allocate first the ibuf header page */ + buf_block_t* ibuf_hdr_block = fseg_create( + space, 0, + IBUF_HEADER + IBUF_TREE_SEG_HEADER, mtr); + + buf_block_dbg_add_level(ibuf_hdr_block, SYNC_TREE_NODE_NEW); + + ut_ad(buf_block_get_page_no(ibuf_hdr_block) + == IBUF_HEADER_PAGE_NO); + /* Allocate then the next page to the segment: it will be the + tree root page */ + + page_no = fseg_alloc_free_page(buf_block_get_frame( + ibuf_hdr_block) + + IBUF_HEADER + + IBUF_TREE_SEG_HEADER, + IBUF_TREE_ROOT_PAGE_NO, + FSP_UP, mtr); + ut_ad(page_no == IBUF_TREE_ROOT_PAGE_NO); + + block = buf_page_get(space, zip_size, page_no, + RW_X_LATCH, mtr); + } else { + block = fseg_create(space, 0, + PAGE_HEADER + PAGE_BTR_SEG_TOP, mtr); + } + + if (block == NULL) { + + return(FIL_NULL); + } + + page_no = buf_block_get_page_no(block); + frame = buf_block_get_frame(block); + + buf_block_dbg_add_level(block, SYNC_TREE_NODE_NEW); + + if (type & DICT_IBUF) { + /* It is an insert buffer tree: initialize the free list */ + + ut_ad(page_no == IBUF_TREE_ROOT_PAGE_NO); + + flst_init(frame + PAGE_HEADER + PAGE_BTR_IBUF_FREE_LIST, mtr); + } else { + /* It is a non-ibuf tree: create a file segment for leaf + pages */ + fseg_create(space, page_no, + PAGE_HEADER + PAGE_BTR_SEG_LEAF, mtr); + /* The fseg create acquires a second latch on the page, + therefore we must declare it: */ + buf_block_dbg_add_level(block, SYNC_TREE_NODE_NEW); + } + + /* Create a new index page on the the allocated segment page */ + page_zip = buf_block_get_page_zip(block); + + if (UNIV_LIKELY_NULL(page_zip)) { + page = page_create_zip(block, index, 0, mtr); + } else { + page = page_create(block, mtr, + dict_table_is_comp(index->table)); + /* Set the level of the new index page */ + btr_page_set_level(page, NULL, 0, mtr); + } + + block->check_index_page_at_flush = TRUE; + + /* Set the index id of the page */ + btr_page_set_index_id(page, page_zip, index_id, mtr); + + /* Set the next node and previous node fields */ + btr_page_set_next(page, page_zip, FIL_NULL, mtr); + btr_page_set_prev(page, page_zip, FIL_NULL, mtr); + + /* We reset the free bits for the page to allow creation of several + trees in the same mtr, otherwise the latch on a bitmap page would + prevent it because of the latching order */ + + if (!(type & DICT_CLUSTERED)) { + ibuf_reset_free_bits(block); + } + + /* In the following assertion we test that two records of maximum + allowed size fit on the root page: this fact is needed to ensure + correctness of split algorithms */ + + ut_ad(page_get_max_insert_size(page, 2) > 2 * BTR_PAGE_MAX_REC_SIZE); + + return(page_no); +} + +/**************************************************************** +Frees a B-tree except the root page, which MUST be freed after this +by calling btr_free_root. */ +UNIV_INTERN +void +btr_free_but_not_root( +/*==================*/ + ulint space, /* in: space where created */ + ulint zip_size, /* in: compressed page size in bytes + or 0 for uncompressed pages */ + ulint root_page_no) /* in: root page number */ +{ + ibool finished; + page_t* root; + mtr_t mtr; + +leaf_loop: + mtr_start(&mtr); + + root = btr_page_get(space, zip_size, root_page_no, RW_X_LATCH, &mtr); +#ifdef UNIV_BTR_DEBUG + ut_a(btr_root_fseg_validate(FIL_PAGE_DATA + PAGE_BTR_SEG_LEAF + + root, space)); + ut_a(btr_root_fseg_validate(FIL_PAGE_DATA + PAGE_BTR_SEG_TOP + + root, space)); +#endif /* UNIV_BTR_DEBUG */ + + /* NOTE: page hash indexes are dropped when a page is freed inside + fsp0fsp. */ + + finished = fseg_free_step(root + PAGE_HEADER + PAGE_BTR_SEG_LEAF, + &mtr); + mtr_commit(&mtr); + + if (!finished) { + + goto leaf_loop; + } +top_loop: + mtr_start(&mtr); + + root = btr_page_get(space, zip_size, root_page_no, RW_X_LATCH, &mtr); +#ifdef UNIV_BTR_DEBUG + ut_a(btr_root_fseg_validate(FIL_PAGE_DATA + PAGE_BTR_SEG_TOP + + root, space)); +#endif /* UNIV_BTR_DEBUG */ + + finished = fseg_free_step_not_header( + root + PAGE_HEADER + PAGE_BTR_SEG_TOP, &mtr); + mtr_commit(&mtr); + + if (!finished) { + + goto top_loop; + } +} + +/**************************************************************** +Frees the B-tree root page. Other tree MUST already have been freed. */ +UNIV_INTERN +void +btr_free_root( +/*==========*/ + ulint space, /* in: space where created */ + ulint zip_size, /* in: compressed page size in bytes + or 0 for uncompressed pages */ + ulint root_page_no, /* in: root page number */ + mtr_t* mtr) /* in: a mini-transaction which has already + been started */ +{ + buf_block_t* block; + fseg_header_t* header; + + block = btr_block_get(space, zip_size, root_page_no, RW_X_LATCH, mtr); + + btr_search_drop_page_hash_index(block); + + header = buf_block_get_frame(block) + PAGE_HEADER + PAGE_BTR_SEG_TOP; +#ifdef UNIV_BTR_DEBUG + ut_a(btr_root_fseg_validate(header, space)); +#endif /* UNIV_BTR_DEBUG */ + + while (!fseg_free_step(header, mtr)); +} + +/***************************************************************** +Reorganizes an index page. */ +static +ibool +btr_page_reorganize_low( +/*====================*/ + ibool recovery,/* in: TRUE if called in recovery: + locks should not be updated, i.e., + there cannot exist locks on the + page, and a hash index should not be + dropped: it cannot exist */ + buf_block_t* block, /* in: page to be reorganized */ + dict_index_t* index, /* in: record descriptor */ + mtr_t* mtr) /* in: mtr */ +{ + page_t* page = buf_block_get_frame(block); + page_zip_des_t* page_zip = buf_block_get_page_zip(block); + buf_block_t* temp_block; + page_t* temp_page; + ulint log_mode; + ulint data_size1; + ulint data_size2; + ulint max_ins_size1; + ulint max_ins_size2; + ibool success = FALSE; + + ut_ad(mtr_memo_contains(mtr, block, MTR_MEMO_PAGE_X_FIX)); + ut_ad(!!page_is_comp(page) == dict_table_is_comp(index->table)); +#ifdef UNIV_ZIP_DEBUG + ut_a(!page_zip || page_zip_validate(page_zip, page)); +#endif /* UNIV_ZIP_DEBUG */ + data_size1 = page_get_data_size(page); + max_ins_size1 = page_get_max_insert_size_after_reorganize(page, 1); + + /* Write the log record */ + mlog_open_and_write_index(mtr, page, index, page_is_comp(page) + ? MLOG_COMP_PAGE_REORGANIZE + : MLOG_PAGE_REORGANIZE, 0); + + /* Turn logging off */ + log_mode = mtr_set_log_mode(mtr, MTR_LOG_NONE); + + temp_block = buf_block_alloc(0); + temp_page = temp_block->frame; + + /* Copy the old page to temporary space */ + buf_frame_copy(temp_page, page); + + if (UNIV_LIKELY(!recovery)) { + btr_search_drop_page_hash_index(block); + } + + /* Recreate the page: note that global data on page (possible + segment headers, next page-field, etc.) is preserved intact */ + + page_create(block, mtr, dict_table_is_comp(index->table)); + block->check_index_page_at_flush = TRUE; + + /* Copy the records from the temporary space to the recreated page; + do not copy the lock bits yet */ + + page_copy_rec_list_end_no_locks(block, temp_block, + page_get_infimum_rec(temp_page), + index, mtr); + /* Copy max trx id to recreated page */ + page_set_max_trx_id(block, NULL, page_get_max_trx_id(temp_page)); + + if (UNIV_LIKELY_NULL(page_zip) + && UNIV_UNLIKELY + (!page_zip_compress(page_zip, page, index, NULL))) { + + /* Restore the old page and exit. */ + buf_frame_copy(page, temp_page); + + goto func_exit; + } + + if (UNIV_LIKELY(!recovery)) { + /* Update the record lock bitmaps */ + lock_move_reorganize_page(block, temp_block); + } + + data_size2 = page_get_data_size(page); + max_ins_size2 = page_get_max_insert_size_after_reorganize(page, 1); + + if (UNIV_UNLIKELY(data_size1 != data_size2) + || UNIV_UNLIKELY(max_ins_size1 != max_ins_size2)) { + buf_page_print(page, 0); + buf_page_print(temp_page, 0); + fprintf(stderr, + "InnoDB: Error: page old data size %lu" + " new data size %lu\n" + "InnoDB: Error: page old max ins size %lu" + " new max ins size %lu\n" + "InnoDB: Submit a detailed bug report" + " to http://bugs.mysql.com\n", + (unsigned long) data_size1, (unsigned long) data_size2, + (unsigned long) max_ins_size1, + (unsigned long) max_ins_size2); + } else { + success = TRUE; + } + +func_exit: +#ifdef UNIV_ZIP_DEBUG + ut_a(!page_zip || page_zip_validate(page_zip, page)); +#endif /* UNIV_ZIP_DEBUG */ + buf_block_free(temp_block); + + /* Restore logging mode */ + mtr_set_log_mode(mtr, log_mode); + + return(success); +} + +/***************************************************************** +Reorganizes an index page. +IMPORTANT: if btr_page_reorganize() is invoked on a compressed leaf +page of a non-clustered index, the caller must update the insert +buffer free bits in the same mini-transaction in such a way that the +modification will be redo-logged. */ +UNIV_INTERN +ibool +btr_page_reorganize( +/*================*/ + /* out: TRUE on success, FALSE on failure */ + buf_block_t* block, /* in: page to be reorganized */ + dict_index_t* index, /* in: record descriptor */ + mtr_t* mtr) /* in: mtr */ +{ + return(btr_page_reorganize_low(FALSE, block, index, mtr)); +} + +/*************************************************************** +Parses a redo log record of reorganizing a page. */ +UNIV_INTERN +byte* +btr_parse_page_reorganize( +/*======================*/ + /* out: end of log record or NULL */ + byte* ptr, /* in: buffer */ + byte* end_ptr __attribute__((unused)), + /* in: buffer end */ + dict_index_t* index, /* in: record descriptor */ + buf_block_t* block, /* in: page to be reorganized, or NULL */ + mtr_t* mtr) /* in: mtr or NULL */ +{ + ut_ad(ptr && end_ptr); + + /* The record is empty, except for the record initial part */ + + if (UNIV_LIKELY(block != NULL)) { + btr_page_reorganize_low(TRUE, block, index, mtr); + } + + return(ptr); +} + +/***************************************************************** +Empties an index page. @see btr_page_create().*/ +static +void +btr_page_empty( +/*===========*/ + buf_block_t* block, /* in: page to be emptied */ + page_zip_des_t* page_zip,/* out: compressed page, or NULL */ + dict_index_t* index, /* in: index of the page */ + ulint level, /* in: the B-tree level of the page */ + mtr_t* mtr) /* in: mtr */ +{ + page_t* page = buf_block_get_frame(block); + + ut_ad(mtr_memo_contains(mtr, block, MTR_MEMO_PAGE_X_FIX)); + ut_ad(page_zip == buf_block_get_page_zip(block)); +#ifdef UNIV_ZIP_DEBUG + ut_a(!page_zip || page_zip_validate(page_zip, page)); +#endif /* UNIV_ZIP_DEBUG */ + + btr_search_drop_page_hash_index(block); + + /* Recreate the page: note that global data on page (possible + segment headers, next page-field, etc.) is preserved intact */ + + if (UNIV_LIKELY_NULL(page_zip)) { + page_create_zip(block, index, level, mtr); + } else { + page_create(block, mtr, dict_table_is_comp(index->table)); + btr_page_set_level(page, NULL, level, mtr); + } + + block->check_index_page_at_flush = TRUE; +} + +/***************************************************************** +Makes tree one level higher by splitting the root, and inserts +the tuple. It is assumed that mtr contains an x-latch on the tree. +NOTE that the operation of this function must always succeed, +we cannot reverse it: therefore enough free disk space must be +guaranteed to be available before this function is called. */ +UNIV_INTERN +rec_t* +btr_root_raise_and_insert( +/*======================*/ + /* out: inserted record */ + btr_cur_t* cursor, /* in: cursor at which to insert: must be + on the root page; when the function returns, + the cursor is positioned on the predecessor + of the inserted record */ + const dtuple_t* tuple, /* in: tuple to insert */ + ulint n_ext, /* in: number of externally stored columns */ + mtr_t* mtr) /* in: mtr */ +{ + dict_index_t* index; + page_t* root; + page_t* new_page; + ulint new_page_no; + rec_t* rec; + mem_heap_t* heap; + dtuple_t* node_ptr; + ulint level; + rec_t* node_ptr_rec; + page_cur_t* page_cursor; + page_zip_des_t* root_page_zip; + page_zip_des_t* new_page_zip; + buf_block_t* root_block; + buf_block_t* new_block; + + root = btr_cur_get_page(cursor); + root_block = btr_cur_get_block(cursor); + root_page_zip = buf_block_get_page_zip(root_block); +#ifdef UNIV_ZIP_DEBUG + ut_a(!root_page_zip || page_zip_validate(root_page_zip, root)); +#endif /* UNIV_ZIP_DEBUG */ + index = btr_cur_get_index(cursor); +#ifdef UNIV_BTR_DEBUG + if (!dict_index_is_ibuf(index)) { + ulint space = dict_index_get_space(index); + + ut_a(btr_root_fseg_validate(FIL_PAGE_DATA + PAGE_BTR_SEG_LEAF + + root, space)); + ut_a(btr_root_fseg_validate(FIL_PAGE_DATA + PAGE_BTR_SEG_TOP + + root, space)); + } + + ut_a(dict_index_get_page(index) == page_get_page_no(root)); +#endif /* UNIV_BTR_DEBUG */ + ut_ad(mtr_memo_contains(mtr, dict_index_get_lock(index), + MTR_MEMO_X_LOCK)); + ut_ad(mtr_memo_contains(mtr, root_block, MTR_MEMO_PAGE_X_FIX)); + + /* Allocate a new page to the tree. Root splitting is done by first + moving the root records to the new page, emptying the root, putting + a node pointer to the new page, and then splitting the new page. */ + + level = btr_page_get_level(root, mtr); + + new_block = btr_page_alloc(index, 0, FSP_NO_DIR, level, mtr); + new_page = buf_block_get_frame(new_block); + new_page_zip = buf_block_get_page_zip(new_block); + ut_a(!new_page_zip == !root_page_zip); + ut_a(!new_page_zip + || page_zip_get_size(new_page_zip) + == page_zip_get_size(root_page_zip)); + + btr_page_create(new_block, new_page_zip, index, level, mtr); + + /* Set the next node and previous node fields of new page */ + btr_page_set_next(new_page, new_page_zip, FIL_NULL, mtr); + btr_page_set_prev(new_page, new_page_zip, FIL_NULL, mtr); + + /* Copy the records from root to the new page one by one. */ + + if (0 +#ifdef UNIV_ZIP_COPY + || new_page_zip +#endif /* UNIV_ZIP_COPY */ + || UNIV_UNLIKELY + (!page_copy_rec_list_end(new_block, root_block, + page_get_infimum_rec(root), + index, mtr))) { + ut_a(new_page_zip); + + /* Copy the page byte for byte. */ + page_zip_copy_recs(new_page_zip, new_page, + root_page_zip, root, index, mtr); + + /* Update the lock table and possible hash index. */ + + lock_move_rec_list_end(new_block, root_block, + page_get_infimum_rec(root)); + + btr_search_move_or_delete_hash_entries(new_block, root_block, + index); + } + + /* If this is a pessimistic insert which is actually done to + perform a pessimistic update then we have stored the lock + information of the record to be inserted on the infimum of the + root page: we cannot discard the lock structs on the root page */ + + lock_update_root_raise(new_block, root_block); + + /* Create a memory heap where the node pointer is stored */ + heap = mem_heap_create(100); + + rec = page_rec_get_next(page_get_infimum_rec(new_page)); + new_page_no = buf_block_get_page_no(new_block); + + /* Build the node pointer (= node key and page address) for the + child */ + + node_ptr = dict_index_build_node_ptr(index, rec, new_page_no, heap, + level); + /* The node pointer must be marked as the predefined minimum record, + as there is no lower alphabetical limit to records in the leftmost + node of a level: */ + dtuple_set_info_bits(node_ptr, + dtuple_get_info_bits(node_ptr) + | REC_INFO_MIN_REC_FLAG); + + /* Rebuild the root page to get free space */ + btr_page_empty(root_block, root_page_zip, index, level + 1, mtr); + + /* Set the next node and previous node fields, although + they should already have been set. The previous node field + must be FIL_NULL if root_page_zip != NULL, because the + REC_INFO_MIN_REC_FLAG (of the first user record) will be + set if and only if btr_page_get_prev() == FIL_NULL. */ + btr_page_set_next(root, root_page_zip, FIL_NULL, mtr); + btr_page_set_prev(root, root_page_zip, FIL_NULL, mtr); + + page_cursor = btr_cur_get_page_cur(cursor); + + /* Insert node pointer to the root */ + + page_cur_set_before_first(root_block, page_cursor); + + node_ptr_rec = page_cur_tuple_insert(page_cursor, node_ptr, + index, 0, mtr); + + /* The root page should only contain the node pointer + to new_page at this point. Thus, the data should fit. */ + ut_a(node_ptr_rec); + + /* Free the memory heap */ + mem_heap_free(heap); + + /* We play safe and reset the free bits for the new page */ + +#if 0 + fprintf(stderr, "Root raise new page no %lu\n", new_page_no); +#endif + + if (!dict_index_is_clust(index)) { + ibuf_reset_free_bits(new_block); + } + + /* Reposition the cursor to the child node */ + page_cur_search(new_block, index, tuple, + PAGE_CUR_LE, page_cursor); + + /* Split the child and insert tuple */ + return(btr_page_split_and_insert(cursor, tuple, n_ext, mtr)); +} + +/***************************************************************** +Decides if the page should be split at the convergence point of inserts +converging to the left. */ +UNIV_INTERN +ibool +btr_page_get_split_rec_to_left( +/*===========================*/ + /* out: TRUE if split recommended */ + btr_cur_t* cursor, /* in: cursor at which to insert */ + rec_t** split_rec) /* out: if split recommended, + the first record on upper half page, + or NULL if tuple to be inserted should + be first */ +{ + page_t* page; + rec_t* insert_point; + rec_t* infimum; + + page = btr_cur_get_page(cursor); + insert_point = btr_cur_get_rec(cursor); + + if (page_header_get_ptr(page, PAGE_LAST_INSERT) + == page_rec_get_next(insert_point)) { + + infimum = page_get_infimum_rec(page); + + /* If the convergence is in the middle of a page, include also + the record immediately before the new insert to the upper + page. Otherwise, we could repeatedly move from page to page + lots of records smaller than the convergence point. */ + + if (infimum != insert_point + && page_rec_get_next(infimum) != insert_point) { + + *split_rec = insert_point; + } else { + *split_rec = page_rec_get_next(insert_point); + } + + return(TRUE); + } + + return(FALSE); +} + +/***************************************************************** +Decides if the page should be split at the convergence point of inserts +converging to the right. */ +UNIV_INTERN +ibool +btr_page_get_split_rec_to_right( +/*============================*/ + /* out: TRUE if split recommended */ + btr_cur_t* cursor, /* in: cursor at which to insert */ + rec_t** split_rec) /* out: if split recommended, + the first record on upper half page, + or NULL if tuple to be inserted should + be first */ +{ + page_t* page; + rec_t* insert_point; + + page = btr_cur_get_page(cursor); + insert_point = btr_cur_get_rec(cursor); + + /* We use eager heuristics: if the new insert would be right after + the previous insert on the same page, we assume that there is a + pattern of sequential inserts here. */ + + if (UNIV_LIKELY(page_header_get_ptr(page, PAGE_LAST_INSERT) + == insert_point)) { + + rec_t* next_rec; + + next_rec = page_rec_get_next(insert_point); + + if (page_rec_is_supremum(next_rec)) { +split_at_new: + /* Split at the new record to insert */ + *split_rec = NULL; + } else { + rec_t* next_next_rec = page_rec_get_next(next_rec); + if (page_rec_is_supremum(next_next_rec)) { + + goto split_at_new; + } + + /* If there are >= 2 user records up from the insert + point, split all but 1 off. We want to keep one because + then sequential inserts can use the adaptive hash + index, as they can do the necessary checks of the right + search position just by looking at the records on this + page. */ + + *split_rec = next_next_rec; + } + + return(TRUE); + } + + return(FALSE); +} + +/***************************************************************** +Calculates a split record such that the tuple will certainly fit on +its half-page when the split is performed. We assume in this function +only that the cursor page has at least one user record. */ +static +rec_t* +btr_page_get_sure_split_rec( +/*========================*/ + /* out: split record, or NULL if tuple + will be the first record on upper half-page */ + btr_cur_t* cursor, /* in: cursor at which insert should be made */ + const dtuple_t* tuple, /* in: tuple to insert */ + ulint n_ext) /* in: number of externally stored columns */ +{ + page_t* page; + page_zip_des_t* page_zip; + ulint insert_size; + ulint free_space; + ulint total_data; + ulint total_n_recs; + ulint total_space; + ulint incl_data; + rec_t* ins_rec; + rec_t* rec; + rec_t* next_rec; + ulint n; + mem_heap_t* heap; + ulint* offsets; + + page = btr_cur_get_page(cursor); + + insert_size = rec_get_converted_size(cursor->index, tuple, n_ext); + free_space = page_get_free_space_of_empty(page_is_comp(page)); + + page_zip = btr_cur_get_page_zip(cursor); + if (UNIV_LIKELY_NULL(page_zip)) { + /* Estimate the free space of an empty compressed page. */ + ulint free_space_zip = page_zip_empty_size( + cursor->index->n_fields, + page_zip_get_size(page_zip)); + + if (UNIV_LIKELY(free_space > (ulint) free_space_zip)) { + free_space = (ulint) free_space_zip; + } + } + + /* free_space is now the free space of a created new page */ + + total_data = page_get_data_size(page) + insert_size; + total_n_recs = page_get_n_recs(page) + 1; + ut_ad(total_n_recs >= 2); + total_space = total_data + page_dir_calc_reserved_space(total_n_recs); + + n = 0; + incl_data = 0; + ins_rec = btr_cur_get_rec(cursor); + rec = page_get_infimum_rec(page); + + heap = NULL; + offsets = NULL; + + /* We start to include records to the left half, and when the + space reserved by them exceeds half of total_space, then if + the included records fit on the left page, they will be put there + if something was left over also for the right page, + otherwise the last included record will be the first on the right + half page */ + + do { + /* Decide the next record to include */ + if (rec == ins_rec) { + rec = NULL; /* NULL denotes that tuple is + now included */ + } else if (rec == NULL) { + rec = page_rec_get_next(ins_rec); + } else { + rec = page_rec_get_next(rec); + } + + if (rec == NULL) { + /* Include tuple */ + incl_data += insert_size; + } else { + offsets = rec_get_offsets(rec, cursor->index, + offsets, ULINT_UNDEFINED, + &heap); + incl_data += rec_offs_size(offsets); + } + + n++; + } while (incl_data + page_dir_calc_reserved_space(n) + < total_space / 2); + + if (incl_data + page_dir_calc_reserved_space(n) <= free_space) { + /* The next record will be the first on + the right half page if it is not the + supremum record of page */ + + if (rec == ins_rec) { + rec = NULL; + + goto func_exit; + } else if (rec == NULL) { + next_rec = page_rec_get_next(ins_rec); + } else { + next_rec = page_rec_get_next(rec); + } + ut_ad(next_rec); + if (!page_rec_is_supremum(next_rec)) { + rec = next_rec; + } + } + +func_exit: + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } + return(rec); +} + +/***************************************************************** +Returns TRUE if the insert fits on the appropriate half-page with the +chosen split_rec. */ +static +ibool +btr_page_insert_fits( +/*=================*/ + /* out: TRUE if fits */ + btr_cur_t* cursor, /* in: cursor at which insert + should be made */ + const rec_t* split_rec,/* in: suggestion for first record + on upper half-page, or NULL if + tuple to be inserted should be first */ + const ulint* offsets,/* in: rec_get_offsets( + split_rec, cursor->index) */ + const dtuple_t* tuple, /* in: tuple to insert */ + ulint n_ext, /* in: number of externally stored columns */ + mem_heap_t* heap) /* in: temporary memory heap */ +{ + page_t* page; + ulint insert_size; + ulint free_space; + ulint total_data; + ulint total_n_recs; + const rec_t* rec; + const rec_t* end_rec; + ulint* offs; + + page = btr_cur_get_page(cursor); + + ut_ad(!split_rec == !offsets); + ut_ad(!offsets + || !page_is_comp(page) == !rec_offs_comp(offsets)); + ut_ad(!offsets + || rec_offs_validate(split_rec, cursor->index, offsets)); + + insert_size = rec_get_converted_size(cursor->index, tuple, n_ext); + free_space = page_get_free_space_of_empty(page_is_comp(page)); + + /* free_space is now the free space of a created new page */ + + total_data = page_get_data_size(page) + insert_size; + total_n_recs = page_get_n_recs(page) + 1; + + /* We determine which records (from rec to end_rec, not including + end_rec) will end up on the other half page from tuple when it is + inserted. */ + + if (split_rec == NULL) { + rec = page_rec_get_next(page_get_infimum_rec(page)); + end_rec = page_rec_get_next(btr_cur_get_rec(cursor)); + + } else if (cmp_dtuple_rec(tuple, split_rec, offsets) >= 0) { + + rec = page_rec_get_next(page_get_infimum_rec(page)); + end_rec = split_rec; + } else { + rec = split_rec; + end_rec = page_get_supremum_rec(page); + } + + if (total_data + page_dir_calc_reserved_space(total_n_recs) + <= free_space) { + + /* Ok, there will be enough available space on the + half page where the tuple is inserted */ + + return(TRUE); + } + + offs = NULL; + + while (rec != end_rec) { + /* In this loop we calculate the amount of reserved + space after rec is removed from page. */ + + offs = rec_get_offsets(rec, cursor->index, offs, + ULINT_UNDEFINED, &heap); + + total_data -= rec_offs_size(offs); + total_n_recs--; + + if (total_data + page_dir_calc_reserved_space(total_n_recs) + <= free_space) { + + /* Ok, there will be enough available space on the + half page where the tuple is inserted */ + + return(TRUE); + } + + rec = page_rec_get_next_const(rec); + } + + return(FALSE); +} + +/*********************************************************** +Inserts a data tuple to a tree on a non-leaf level. It is assumed +that mtr holds an x-latch on the tree. */ +UNIV_INTERN +void +btr_insert_on_non_leaf_level( +/*=========================*/ + dict_index_t* index, /* in: index */ + ulint level, /* in: level, must be > 0 */ + dtuple_t* tuple, /* in: the record to be inserted */ + mtr_t* mtr) /* in: mtr */ +{ + big_rec_t* dummy_big_rec; + btr_cur_t cursor; + ulint err; + rec_t* rec; + + ut_ad(level > 0); + + btr_cur_search_to_nth_level(index, level, tuple, PAGE_CUR_LE, + BTR_CONT_MODIFY_TREE, + &cursor, 0, mtr); + + err = btr_cur_pessimistic_insert(BTR_NO_LOCKING_FLAG + | BTR_KEEP_SYS_FLAG + | BTR_NO_UNDO_LOG_FLAG, + &cursor, tuple, &rec, + &dummy_big_rec, 0, NULL, mtr); + ut_a(err == DB_SUCCESS); +} + +/****************************************************************** +Attaches the halves of an index page on the appropriate level in an +index tree. */ +static +void +btr_attach_half_pages( +/*==================*/ + dict_index_t* index, /* in: the index tree */ + buf_block_t* block, /* in/out: page to be split */ + rec_t* split_rec, /* in: first record on upper + half page */ + buf_block_t* new_block, /* in/out: the new half page */ + ulint direction, /* in: FSP_UP or FSP_DOWN */ + mtr_t* mtr) /* in: mtr */ +{ + ulint space; + ulint zip_size; + ulint prev_page_no; + ulint next_page_no; + ulint level; + page_t* page = buf_block_get_frame(block); + page_t* lower_page; + page_t* upper_page; + ulint lower_page_no; + ulint upper_page_no; + page_zip_des_t* lower_page_zip; + page_zip_des_t* upper_page_zip; + dtuple_t* node_ptr_upper; + mem_heap_t* heap; + + ut_ad(mtr_memo_contains(mtr, block, MTR_MEMO_PAGE_X_FIX)); + ut_ad(mtr_memo_contains(mtr, new_block, MTR_MEMO_PAGE_X_FIX)); + + /* Create a memory heap where the data tuple is stored */ + heap = mem_heap_create(1024); + + /* Based on split direction, decide upper and lower pages */ + if (direction == FSP_DOWN) { + + btr_cur_t cursor; + ulint* offsets; + + lower_page = buf_block_get_frame(new_block); + lower_page_no = buf_block_get_page_no(new_block); + lower_page_zip = buf_block_get_page_zip(new_block); + upper_page = buf_block_get_frame(block); + upper_page_no = buf_block_get_page_no(block); + upper_page_zip = buf_block_get_page_zip(block); + + /* Look up the index for the node pointer to page */ + offsets = btr_page_get_father_block(NULL, heap, index, + block, mtr, &cursor); + + /* Replace the address of the old child node (= page) with the + address of the new lower half */ + + btr_node_ptr_set_child_page_no( + btr_cur_get_rec(&cursor), + btr_cur_get_page_zip(&cursor), + offsets, lower_page_no, mtr); + mem_heap_empty(heap); + } else { + lower_page = buf_block_get_frame(block); + lower_page_no = buf_block_get_page_no(block); + lower_page_zip = buf_block_get_page_zip(block); + upper_page = buf_block_get_frame(new_block); + upper_page_no = buf_block_get_page_no(new_block); + upper_page_zip = buf_block_get_page_zip(new_block); + } + + /* Get the level of the split pages */ + level = btr_page_get_level(buf_block_get_frame(block), mtr); + ut_ad(level + == btr_page_get_level(buf_block_get_frame(new_block), mtr)); + + /* Build the node pointer (= node key and page address) for the upper + half */ + + node_ptr_upper = dict_index_build_node_ptr(index, split_rec, + upper_page_no, heap, level); + + /* Insert it next to the pointer to the lower half. Note that this + may generate recursion leading to a split on the higher level. */ + + btr_insert_on_non_leaf_level(index, level + 1, node_ptr_upper, mtr); + + /* Free the memory heap */ + mem_heap_free(heap); + + /* Get the previous and next pages of page */ + + prev_page_no = btr_page_get_prev(page, mtr); + next_page_no = btr_page_get_next(page, mtr); + space = buf_block_get_space(block); + zip_size = buf_block_get_zip_size(block); + + /* Update page links of the level */ + + if (prev_page_no != FIL_NULL) { + buf_block_t* prev_block = btr_block_get(space, zip_size, + prev_page_no, + RW_X_LATCH, mtr); +#ifdef UNIV_BTR_DEBUG + ut_a(page_is_comp(prev_block->frame) == page_is_comp(page)); + ut_a(btr_page_get_next(prev_block->frame, mtr) + == buf_block_get_page_no(block)); +#endif /* UNIV_BTR_DEBUG */ + + btr_page_set_next(buf_block_get_frame(prev_block), + buf_block_get_page_zip(prev_block), + lower_page_no, mtr); + } + + if (next_page_no != FIL_NULL) { + buf_block_t* next_block = btr_block_get(space, zip_size, + next_page_no, + RW_X_LATCH, mtr); +#ifdef UNIV_BTR_DEBUG + ut_a(page_is_comp(next_block->frame) == page_is_comp(page)); + ut_a(btr_page_get_prev(next_block->frame, mtr) + == page_get_page_no(page)); +#endif /* UNIV_BTR_DEBUG */ + + btr_page_set_prev(buf_block_get_frame(next_block), + buf_block_get_page_zip(next_block), + upper_page_no, mtr); + } + + btr_page_set_prev(lower_page, lower_page_zip, prev_page_no, mtr); + btr_page_set_next(lower_page, lower_page_zip, upper_page_no, mtr); + + btr_page_set_prev(upper_page, upper_page_zip, lower_page_no, mtr); + btr_page_set_next(upper_page, upper_page_zip, next_page_no, mtr); +} + +/***************************************************************** +Splits an index page to halves and inserts the tuple. It is assumed +that mtr holds an x-latch to the index tree. NOTE: the tree x-latch +is released within this function! NOTE that the operation of this +function must always succeed, we cannot reverse it: therefore +enough free disk space must be guaranteed to be available before +this function is called. */ +UNIV_INTERN +rec_t* +btr_page_split_and_insert( +/*======================*/ + /* out: inserted record; NOTE: the tree + x-latch is released! NOTE: 2 free disk + pages must be available! */ + btr_cur_t* cursor, /* in: cursor at which to insert; when the + function returns, the cursor is positioned + on the predecessor of the inserted record */ + const dtuple_t* tuple, /* in: tuple to insert */ + ulint n_ext, /* in: number of externally stored columns */ + mtr_t* mtr) /* in: mtr */ +{ + buf_block_t* block; + page_t* page; + page_zip_des_t* page_zip; + ulint page_no; + byte direction; + ulint hint_page_no; + buf_block_t* new_block; + page_t* new_page; + page_zip_des_t* new_page_zip; + rec_t* split_rec; + buf_block_t* left_block; + buf_block_t* right_block; + buf_block_t* insert_block; + page_t* insert_page; + page_cur_t* page_cursor; + rec_t* first_rec; + byte* buf = 0; /* remove warning */ + rec_t* move_limit; + ibool insert_will_fit; + ibool insert_left; + ulint n_iterations = 0; + rec_t* rec; + mem_heap_t* heap; + ulint n_uniq; + ulint* offsets; + + heap = mem_heap_create(1024); + n_uniq = dict_index_get_n_unique_in_tree(cursor->index); +func_start: + mem_heap_empty(heap); + offsets = NULL; + + ut_ad(mtr_memo_contains(mtr, dict_index_get_lock(cursor->index), + MTR_MEMO_X_LOCK)); +#ifdef UNIV_SYNC_DEBUG + ut_ad(rw_lock_own(dict_index_get_lock(cursor->index), RW_LOCK_EX)); +#endif /* UNIV_SYNC_DEBUG */ + + block = btr_cur_get_block(cursor); + page = buf_block_get_frame(block); + page_zip = buf_block_get_page_zip(block); + + ut_ad(mtr_memo_contains(mtr, block, MTR_MEMO_PAGE_X_FIX)); + ut_ad(page_get_n_recs(page) >= 1); + + page_no = buf_block_get_page_no(block); + + /* 1. Decide the split record; split_rec == NULL means that the + tuple to be inserted should be the first record on the upper + half-page */ + + if (n_iterations > 0) { + direction = FSP_UP; + hint_page_no = page_no + 1; + split_rec = btr_page_get_sure_split_rec(cursor, tuple, n_ext); + + } else if (btr_page_get_split_rec_to_right(cursor, &split_rec)) { + direction = FSP_UP; + hint_page_no = page_no + 1; + + } else if (btr_page_get_split_rec_to_left(cursor, &split_rec)) { + direction = FSP_DOWN; + hint_page_no = page_no - 1; + } else { + direction = FSP_UP; + hint_page_no = page_no + 1; + + if (page_get_n_recs(page) == 1) { + page_cur_t pcur; + + /* There is only one record in the index page + therefore we can't split the node in the middle + by default. We need to determine whether the + new record will be inserted to the left or right. */ + + /* Read the first (and only) record in the page. */ + page_cur_set_before_first(block, &pcur); + page_cur_move_to_next(&pcur); + first_rec = page_cur_get_rec(&pcur); + + offsets = rec_get_offsets( + first_rec, cursor->index, offsets, + n_uniq, &heap); + + /* If the new record is less than the existing record + the the split in the middle will copy the existing + record to the new node. */ + if (cmp_dtuple_rec(tuple, first_rec, offsets) < 0) { + split_rec = page_get_middle_rec(page); + } else { + split_rec = NULL; + } + } else { + split_rec = page_get_middle_rec(page); + } + } + + /* 2. Allocate a new page to the index */ + new_block = btr_page_alloc(cursor->index, hint_page_no, direction, + btr_page_get_level(page, mtr), mtr); + new_page = buf_block_get_frame(new_block); + new_page_zip = buf_block_get_page_zip(new_block); + btr_page_create(new_block, new_page_zip, cursor->index, + btr_page_get_level(page, mtr), mtr); + + /* 3. Calculate the first record on the upper half-page, and the + first record (move_limit) on original page which ends up on the + upper half */ + + if (split_rec) { + first_rec = move_limit = split_rec; + + offsets = rec_get_offsets(split_rec, cursor->index, offsets, + n_uniq, &heap); + + insert_left = cmp_dtuple_rec(tuple, split_rec, offsets) < 0; + + if (UNIV_UNLIKELY(!insert_left && new_page_zip + && n_iterations > 0)) { + /* If a compressed page has already been split, + avoid further splits by inserting the record + to an empty page. */ + split_rec = NULL; + goto insert_right; + } + } else { +insert_right: + insert_left = FALSE; + buf = mem_alloc(rec_get_converted_size(cursor->index, + tuple, n_ext)); + + first_rec = rec_convert_dtuple_to_rec(buf, cursor->index, + tuple, n_ext); + move_limit = page_rec_get_next(btr_cur_get_rec(cursor)); + } + + /* 4. Do first the modifications in the tree structure */ + + btr_attach_half_pages(cursor->index, block, + first_rec, new_block, direction, mtr); + + /* If the split is made on the leaf level and the insert will fit + on the appropriate half-page, we may release the tree x-latch. + We can then move the records after releasing the tree latch, + thus reducing the tree latch contention. */ + + if (split_rec) { + insert_will_fit = !new_page_zip + && btr_page_insert_fits(cursor, split_rec, + offsets, tuple, n_ext, heap); + } else { + mem_free(buf); + insert_will_fit = !new_page_zip + && btr_page_insert_fits(cursor, NULL, + NULL, tuple, n_ext, heap); + } + + if (insert_will_fit && page_is_leaf(page)) { + + mtr_memo_release(mtr, dict_index_get_lock(cursor->index), + MTR_MEMO_X_LOCK); + } + + /* 5. Move then the records to the new page */ + if (direction == FSP_DOWN) { + /* fputs("Split left\n", stderr); */ + + if (0 +#ifdef UNIV_ZIP_COPY + || page_zip +#endif /* UNIV_ZIP_COPY */ + || UNIV_UNLIKELY + (!page_move_rec_list_start(new_block, block, move_limit, + cursor->index, mtr))) { + /* For some reason, compressing new_page failed, + even though it should contain fewer records than + the original page. Copy the page byte for byte + and then delete the records from both pages + as appropriate. Deleting will always succeed. */ + ut_a(new_page_zip); + + page_zip_copy_recs(new_page_zip, new_page, + page_zip, page, cursor->index, mtr); + page_delete_rec_list_end(move_limit - page + new_page, + new_block, cursor->index, + ULINT_UNDEFINED, + ULINT_UNDEFINED, mtr); + + /* Update the lock table and possible hash index. */ + + lock_move_rec_list_start( + new_block, block, move_limit, + new_page + PAGE_NEW_INFIMUM); + + btr_search_move_or_delete_hash_entries( + new_block, block, cursor->index); + + /* Delete the records from the source page. */ + + page_delete_rec_list_start(move_limit, block, + cursor->index, mtr); + } + + left_block = new_block; + right_block = block; + + lock_update_split_left(right_block, left_block); + } else { + /* fputs("Split right\n", stderr); */ + + if (0 +#ifdef UNIV_ZIP_COPY + || page_zip +#endif /* UNIV_ZIP_COPY */ + || UNIV_UNLIKELY + (!page_move_rec_list_end(new_block, block, move_limit, + cursor->index, mtr))) { + /* For some reason, compressing new_page failed, + even though it should contain fewer records than + the original page. Copy the page byte for byte + and then delete the records from both pages + as appropriate. Deleting will always succeed. */ + ut_a(new_page_zip); + + page_zip_copy_recs(new_page_zip, new_page, + page_zip, page, cursor->index, mtr); + page_delete_rec_list_start(move_limit - page + + new_page, new_block, + cursor->index, mtr); + + /* Update the lock table and possible hash index. */ + + lock_move_rec_list_end(new_block, block, move_limit); + + btr_search_move_or_delete_hash_entries( + new_block, block, cursor->index); + + /* Delete the records from the source page. */ + + page_delete_rec_list_end(move_limit, block, + cursor->index, + ULINT_UNDEFINED, + ULINT_UNDEFINED, mtr); + } + + left_block = block; + right_block = new_block; + + lock_update_split_right(right_block, left_block); + } + +#ifdef UNIV_ZIP_DEBUG + if (UNIV_LIKELY_NULL(page_zip)) { + ut_a(page_zip_validate(page_zip, page)); + ut_a(page_zip_validate(new_page_zip, new_page)); + } +#endif /* UNIV_ZIP_DEBUG */ + + /* At this point, split_rec, move_limit and first_rec may point + to garbage on the old page. */ + + /* 6. The split and the tree modification is now completed. Decide the + page where the tuple should be inserted */ + + if (insert_left) { + insert_block = left_block; + } else { + insert_block = right_block; + } + + insert_page = buf_block_get_frame(insert_block); + + /* 7. Reposition the cursor for insert and try insertion */ + page_cursor = btr_cur_get_page_cur(cursor); + + page_cur_search(insert_block, cursor->index, tuple, + PAGE_CUR_LE, page_cursor); + + rec = page_cur_tuple_insert(page_cursor, tuple, + cursor->index, n_ext, mtr); + +#ifdef UNIV_ZIP_DEBUG + { + page_zip_des_t* insert_page_zip + = buf_block_get_page_zip(insert_block); + ut_a(!insert_page_zip + || page_zip_validate(insert_page_zip, insert_page)); + } +#endif /* UNIV_ZIP_DEBUG */ + + if (UNIV_LIKELY(rec != NULL)) { + + goto func_exit; + } + + /* 8. If insert did not fit, try page reorganization */ + + if (UNIV_UNLIKELY + (!btr_page_reorganize(insert_block, cursor->index, mtr))) { + + goto insert_failed; + } + + page_cur_search(insert_block, cursor->index, tuple, + PAGE_CUR_LE, page_cursor); + rec = page_cur_tuple_insert(page_cursor, tuple, cursor->index, + n_ext, mtr); + + if (UNIV_UNLIKELY(rec == NULL)) { + /* The insert did not fit on the page: loop back to the + start of the function for a new split */ +insert_failed: + /* We play safe and reset the free bits for new_page */ + if (!dict_index_is_clust(cursor->index)) { + ibuf_reset_free_bits(new_block); + } + + /* fprintf(stderr, "Split second round %lu\n", + page_get_page_no(page)); */ + n_iterations++; + ut_ad(n_iterations < 2 + || buf_block_get_page_zip(insert_block)); + ut_ad(!insert_will_fit); + + goto func_start; + } + +func_exit: + /* Insert fit on the page: update the free bits for the + left and right pages in the same mtr */ + + if (!dict_index_is_clust(cursor->index) && page_is_leaf(page)) { + ibuf_update_free_bits_for_two_pages_low( + buf_block_get_zip_size(left_block), + left_block, right_block, mtr); + } + +#if 0 + fprintf(stderr, "Split and insert done %lu %lu\n", + buf_block_get_page_no(left_block), + buf_block_get_page_no(right_block)); +#endif + + ut_ad(page_validate(buf_block_get_frame(left_block), cursor->index)); + ut_ad(page_validate(buf_block_get_frame(right_block), cursor->index)); + + mem_heap_free(heap); + return(rec); +} + +/***************************************************************** +Removes a page from the level list of pages. */ +static +void +btr_level_list_remove( +/*==================*/ + ulint space, /* in: space where removed */ + ulint zip_size,/* in: compressed page size in bytes + or 0 for uncompressed pages */ + page_t* page, /* in: page to remove */ + mtr_t* mtr) /* in: mtr */ +{ + ulint prev_page_no; + ulint next_page_no; + + ut_ad(page && mtr); + ut_ad(mtr_memo_contains_page(mtr, page, MTR_MEMO_PAGE_X_FIX)); + ut_ad(space == page_get_space_id(page)); + /* Get the previous and next page numbers of page */ + + prev_page_no = btr_page_get_prev(page, mtr); + next_page_no = btr_page_get_next(page, mtr); + + /* Update page links of the level */ + + if (prev_page_no != FIL_NULL) { + buf_block_t* prev_block + = btr_block_get(space, zip_size, prev_page_no, + RW_X_LATCH, mtr); + page_t* prev_page + = buf_block_get_frame(prev_block); +#ifdef UNIV_BTR_DEBUG + ut_a(page_is_comp(prev_page) == page_is_comp(page)); + ut_a(btr_page_get_next(prev_page, mtr) + == page_get_page_no(page)); +#endif /* UNIV_BTR_DEBUG */ + + btr_page_set_next(prev_page, + buf_block_get_page_zip(prev_block), + next_page_no, mtr); + } + + if (next_page_no != FIL_NULL) { + buf_block_t* next_block + = btr_block_get(space, zip_size, next_page_no, + RW_X_LATCH, mtr); + page_t* next_page + = buf_block_get_frame(next_block); +#ifdef UNIV_BTR_DEBUG + ut_a(page_is_comp(next_page) == page_is_comp(page)); + ut_a(btr_page_get_prev(next_page, mtr) + == page_get_page_no(page)); +#endif /* UNIV_BTR_DEBUG */ + + btr_page_set_prev(next_page, + buf_block_get_page_zip(next_block), + prev_page_no, mtr); + } +} + +/******************************************************************** +Writes the redo log record for setting an index record as the predefined +minimum record. */ +UNIV_INLINE +void +btr_set_min_rec_mark_log( +/*=====================*/ + rec_t* rec, /* in: record */ + byte type, /* in: MLOG_COMP_REC_MIN_MARK or MLOG_REC_MIN_MARK */ + mtr_t* mtr) /* in: mtr */ +{ + mlog_write_initial_log_record(rec, type, mtr); + + /* Write rec offset as a 2-byte ulint */ + mlog_catenate_ulint(mtr, page_offset(rec), MLOG_2BYTES); +} + +/******************************************************************** +Parses the redo log record for setting an index record as the predefined +minimum record. */ +UNIV_INTERN +byte* +btr_parse_set_min_rec_mark( +/*=======================*/ + /* out: end of log record or NULL */ + byte* ptr, /* in: buffer */ + byte* end_ptr,/* in: buffer end */ + ulint comp, /* in: nonzero=compact page format */ + page_t* page, /* in: page or NULL */ + mtr_t* mtr) /* in: mtr or NULL */ +{ + rec_t* rec; + + if (end_ptr < ptr + 2) { + + return(NULL); + } + + if (page) { + ut_a(!page_is_comp(page) == !comp); + + rec = page + mach_read_from_2(ptr); + + btr_set_min_rec_mark(rec, mtr); + } + + return(ptr + 2); +} + +/******************************************************************** +Sets a record as the predefined minimum record. */ +UNIV_INTERN +void +btr_set_min_rec_mark( +/*=================*/ + rec_t* rec, /* in: record */ + mtr_t* mtr) /* in: mtr */ +{ + ulint info_bits; + + if (UNIV_LIKELY(page_rec_is_comp(rec))) { + info_bits = rec_get_info_bits(rec, TRUE); + + rec_set_info_bits_new(rec, info_bits | REC_INFO_MIN_REC_FLAG); + + btr_set_min_rec_mark_log(rec, MLOG_COMP_REC_MIN_MARK, mtr); + } else { + info_bits = rec_get_info_bits(rec, FALSE); + + rec_set_info_bits_old(rec, info_bits | REC_INFO_MIN_REC_FLAG); + + btr_set_min_rec_mark_log(rec, MLOG_REC_MIN_MARK, mtr); + } +} + +/***************************************************************** +Deletes on the upper level the node pointer to a page. */ +UNIV_INTERN +void +btr_node_ptr_delete( +/*================*/ + dict_index_t* index, /* in: index tree */ + buf_block_t* block, /* in: page whose node pointer is deleted */ + mtr_t* mtr) /* in: mtr */ +{ + btr_cur_t cursor; + ibool compressed; + ulint err; + + ut_ad(mtr_memo_contains(mtr, block, MTR_MEMO_PAGE_X_FIX)); + + /* Delete node pointer on father page */ + btr_page_get_father(index, block, mtr, &cursor); + + compressed = btr_cur_pessimistic_delete(&err, TRUE, &cursor, RB_NONE, + mtr); + ut_a(err == DB_SUCCESS); + + if (!compressed) { + btr_cur_compress_if_useful(&cursor, mtr); + } +} + +/***************************************************************** +If page is the only on its level, this function moves its records to the +father page, thus reducing the tree height. */ +static +void +btr_lift_page_up( +/*=============*/ + dict_index_t* index, /* in: index tree */ + buf_block_t* block, /* in: page which is the only on its level; + must not be empty: use + btr_discard_only_page_on_level if the last + record from the page should be removed */ + mtr_t* mtr) /* in: mtr */ +{ + buf_block_t* father_block; + page_t* father_page; + ulint page_level; + page_zip_des_t* father_page_zip; + page_t* page = buf_block_get_frame(block); + ulint root_page_no; + buf_block_t* blocks[BTR_MAX_LEVELS]; + ulint n_blocks; /* last used index in blocks[] */ + ulint i; + + ut_ad(btr_page_get_prev(page, mtr) == FIL_NULL); + ut_ad(btr_page_get_next(page, mtr) == FIL_NULL); + ut_ad(mtr_memo_contains(mtr, block, MTR_MEMO_PAGE_X_FIX)); + + page_level = btr_page_get_level(page, mtr); + root_page_no = dict_index_get_page(index); + + { + btr_cur_t cursor; + mem_heap_t* heap = mem_heap_create(100); + ulint* offsets; + buf_block_t* b; + + offsets = btr_page_get_father_block(NULL, heap, index, + block, mtr, &cursor); + father_block = btr_cur_get_block(&cursor); + father_page_zip = buf_block_get_page_zip(father_block); + father_page = buf_block_get_frame(father_block); + + n_blocks = 0; + + /* Store all ancestor pages so we can reset their + levels later on. We have to do all the searches on + the tree now because later on, after we've replaced + the first level, the tree is in an inconsistent state + and can not be searched. */ + for (b = father_block; + buf_block_get_page_no(b) != root_page_no; ) { + ut_a(n_blocks < BTR_MAX_LEVELS); + + offsets = btr_page_get_father_block(offsets, heap, + index, b, + mtr, &cursor); + + blocks[n_blocks++] = b = btr_cur_get_block(&cursor); + } + + mem_heap_free(heap); + } + + btr_search_drop_page_hash_index(block); + + /* Make the father empty */ + btr_page_empty(father_block, father_page_zip, index, page_level, mtr); + + /* Copy the records to the father page one by one. */ + if (0 +#ifdef UNIV_ZIP_COPY + || father_page_zip +#endif /* UNIV_ZIP_COPY */ + || UNIV_UNLIKELY + (!page_copy_rec_list_end(father_block, block, + page_get_infimum_rec(page), + index, mtr))) { + const page_zip_des_t* page_zip + = buf_block_get_page_zip(block); + ut_a(father_page_zip); + ut_a(page_zip); + + /* Copy the page byte for byte. */ + page_zip_copy_recs(father_page_zip, father_page, + page_zip, page, index, mtr); + + /* Update the lock table and possible hash index. */ + + lock_move_rec_list_end(father_block, block, + page_get_infimum_rec(page)); + + btr_search_move_or_delete_hash_entries(father_block, block, + index); + } + + lock_update_copy_and_discard(father_block, block); + + /* Go upward to root page, decrementing levels by one. */ + for (i = 0; i < n_blocks; i++, page_level++) { + page_t* page = buf_block_get_frame(blocks[i]); + page_zip_des_t* page_zip= buf_block_get_page_zip(blocks[i]); + + ut_ad(btr_page_get_level(page, mtr) == page_level + 1); + + btr_page_set_level(page, page_zip, page_level, mtr); +#ifdef UNIV_ZIP_DEBUG + ut_a(!page_zip || page_zip_validate(page_zip, page)); +#endif /* UNIV_ZIP_DEBUG */ + } + + /* Free the file page */ + btr_page_free(index, block, mtr); + + /* We play it safe and reset the free bits for the father */ + if (!dict_index_is_clust(index)) { + ibuf_reset_free_bits(father_block); + } + ut_ad(page_validate(father_page, index)); + ut_ad(btr_check_node_ptr(index, father_block, mtr)); +} + +/***************************************************************** +Tries to merge the page first to the left immediate brother if such a +brother exists, and the node pointers to the current page and to the brother +reside on the same page. If the left brother does not satisfy these +conditions, looks at the right brother. If the page is the only one on that +level lifts the records of the page to the father page, thus reducing the +tree height. It is assumed that mtr holds an x-latch on the tree and on the +page. If cursor is on the leaf level, mtr must also hold x-latches to the +brothers, if they exist. */ +UNIV_INTERN +ibool +btr_compress( +/*=========*/ + /* out: TRUE on success */ + btr_cur_t* cursor, /* in: cursor on the page to merge or lift; + the page must not be empty: in record delete + use btr_discard_page if the page would become + empty */ + mtr_t* mtr) /* in: mtr */ +{ + dict_index_t* index; + ulint space; + ulint zip_size; + ulint left_page_no; + ulint right_page_no; + buf_block_t* merge_block; + page_t* merge_page; + page_zip_des_t* merge_page_zip; + ibool is_left; + buf_block_t* block; + page_t* page; + btr_cur_t father_cursor; + mem_heap_t* heap; + ulint* offsets; + ulint data_size; + ulint n_recs; + ulint max_ins_size; + ulint max_ins_size_reorg; + ulint level; + + block = btr_cur_get_block(cursor); + page = btr_cur_get_page(cursor); + index = btr_cur_get_index(cursor); + ut_a((ibool) !!page_is_comp(page) == dict_table_is_comp(index->table)); + + ut_ad(mtr_memo_contains(mtr, dict_index_get_lock(index), + MTR_MEMO_X_LOCK)); + ut_ad(mtr_memo_contains(mtr, block, MTR_MEMO_PAGE_X_FIX)); + level = btr_page_get_level(page, mtr); + space = dict_index_get_space(index); + zip_size = dict_table_zip_size(index->table); + + left_page_no = btr_page_get_prev(page, mtr); + right_page_no = btr_page_get_next(page, mtr); + +#if 0 + fprintf(stderr, "Merge left page %lu right %lu \n", + left_page_no, right_page_no); +#endif + + heap = mem_heap_create(100); + offsets = btr_page_get_father_block(NULL, heap, index, block, mtr, + &father_cursor); + + /* Decide the page to which we try to merge and which will inherit + the locks */ + + is_left = left_page_no != FIL_NULL; + + if (is_left) { + + merge_block = btr_block_get(space, zip_size, left_page_no, + RW_X_LATCH, mtr); + merge_page = buf_block_get_frame(merge_block); +#ifdef UNIV_BTR_DEBUG + ut_a(btr_page_get_next(merge_page, mtr) + == buf_block_get_page_no(block)); +#endif /* UNIV_BTR_DEBUG */ + } else if (right_page_no != FIL_NULL) { + + merge_block = btr_block_get(space, zip_size, right_page_no, + RW_X_LATCH, mtr); + merge_page = buf_block_get_frame(merge_block); +#ifdef UNIV_BTR_DEBUG + ut_a(btr_page_get_prev(merge_page, mtr) + == buf_block_get_page_no(block)); +#endif /* UNIV_BTR_DEBUG */ + } else { + /* The page is the only one on the level, lift the records + to the father */ + btr_lift_page_up(index, block, mtr); + mem_heap_free(heap); + return(TRUE); + } + + n_recs = page_get_n_recs(page); + data_size = page_get_data_size(page); +#ifdef UNIV_BTR_DEBUG + ut_a(page_is_comp(merge_page) == page_is_comp(page)); +#endif /* UNIV_BTR_DEBUG */ + + max_ins_size_reorg = page_get_max_insert_size_after_reorganize( + merge_page, n_recs); + if (data_size > max_ins_size_reorg) { + + /* No space for merge */ +err_exit: + /* We play it safe and reset the free bits. */ + if (zip_size + && page_is_leaf(merge_page) + && !dict_index_is_clust(index)) { + ibuf_reset_free_bits(merge_block); + } + + mem_heap_free(heap); + return(FALSE); + } + + ut_ad(page_validate(merge_page, index)); + + max_ins_size = page_get_max_insert_size(merge_page, n_recs); + + if (UNIV_UNLIKELY(data_size > max_ins_size)) { + + /* We have to reorganize merge_page */ + + if (UNIV_UNLIKELY(!btr_page_reorganize(merge_block, + index, mtr))) { + + goto err_exit; + } + + max_ins_size = page_get_max_insert_size(merge_page, n_recs); + + ut_ad(page_validate(merge_page, index)); + ut_ad(max_ins_size == max_ins_size_reorg); + + if (UNIV_UNLIKELY(data_size > max_ins_size)) { + + /* Add fault tolerance, though this should + never happen */ + + goto err_exit; + } + } + + merge_page_zip = buf_block_get_page_zip(merge_block); +#ifdef UNIV_ZIP_DEBUG + if (UNIV_LIKELY_NULL(merge_page_zip)) { + const page_zip_des_t* page_zip + = buf_block_get_page_zip(block); + ut_a(page_zip); + ut_a(page_zip_validate(merge_page_zip, merge_page)); + ut_a(page_zip_validate(page_zip, page)); + } +#endif /* UNIV_ZIP_DEBUG */ + + /* Move records to the merge page */ + if (is_left) { + rec_t* orig_pred = page_copy_rec_list_start( + merge_block, block, page_get_supremum_rec(page), + index, mtr); + + if (UNIV_UNLIKELY(!orig_pred)) { + goto err_exit; + } + + btr_search_drop_page_hash_index(block); + + /* Remove the page from the level list */ + btr_level_list_remove(space, zip_size, page, mtr); + + btr_node_ptr_delete(index, block, mtr); + lock_update_merge_left(merge_block, orig_pred, block); + } else { + rec_t* orig_succ; +#ifdef UNIV_BTR_DEBUG + byte fil_page_prev[4]; +#endif /* UNIV_BTR_DEBUG */ + + if (UNIV_LIKELY_NULL(merge_page_zip)) { + /* The function page_zip_compress(), which will be + invoked by page_copy_rec_list_end() below, + requires that FIL_PAGE_PREV be FIL_NULL. + Clear the field, but prepare to restore it. */ +#ifdef UNIV_BTR_DEBUG + memcpy(fil_page_prev, merge_page + FIL_PAGE_PREV, 4); +#endif /* UNIV_BTR_DEBUG */ +#if FIL_NULL != 0xffffffff +# error "FIL_NULL != 0xffffffff" +#endif + memset(merge_page + FIL_PAGE_PREV, 0xff, 4); + } + + orig_succ = page_copy_rec_list_end(merge_block, block, + page_get_infimum_rec(page), + cursor->index, mtr); + + if (UNIV_UNLIKELY(!orig_succ)) { + ut_a(merge_page_zip); +#ifdef UNIV_BTR_DEBUG + /* FIL_PAGE_PREV was restored from merge_page_zip. */ + ut_a(!memcmp(fil_page_prev, + merge_page + FIL_PAGE_PREV, 4)); +#endif /* UNIV_BTR_DEBUG */ + goto err_exit; + } + + btr_search_drop_page_hash_index(block); + +#ifdef UNIV_BTR_DEBUG + if (UNIV_LIKELY_NULL(merge_page_zip)) { + /* Restore FIL_PAGE_PREV in order to avoid an assertion + failure in btr_level_list_remove(), which will set + the field again to FIL_NULL. Even though this makes + merge_page and merge_page_zip inconsistent for a + split second, it is harmless, because the pages + are X-latched. */ + memcpy(merge_page + FIL_PAGE_PREV, fil_page_prev, 4); + } +#endif /* UNIV_BTR_DEBUG */ + + /* Remove the page from the level list */ + btr_level_list_remove(space, zip_size, page, mtr); + + /* Replace the address of the old child node (= page) with the + address of the merge page to the right */ + + btr_node_ptr_set_child_page_no( + btr_cur_get_rec(&father_cursor), + btr_cur_get_page_zip(&father_cursor), + offsets, right_page_no, mtr); + btr_node_ptr_delete(index, merge_block, mtr); + + lock_update_merge_right(merge_block, orig_succ, block); + } + + mem_heap_free(heap); + + if (!dict_index_is_clust(index) && page_is_leaf(merge_page)) { + /* Update the free bits of the B-tree page in the + insert buffer bitmap. This has to be done in a + separate mini-transaction that is committed before the + main mini-transaction. We cannot update the insert + buffer bitmap in this mini-transaction, because + btr_compress() can be invoked recursively without + committing the mini-transaction in between. Since + insert buffer bitmap pages have a lower rank than + B-tree pages, we must not access other pages in the + same mini-transaction after accessing an insert buffer + bitmap page. */ + + /* The free bits in the insert buffer bitmap must + never exceed the free space on a page. It is safe to + decrement or reset the bits in the bitmap in a + mini-transaction that is committed before the + mini-transaction that affects the free space. */ + + /* It is unsafe to increment the bits in a separately + committed mini-transaction, because in crash recovery, + the free bits could momentarily be set too high. */ + + if (zip_size) { + /* Because the free bits may be incremented + and we cannot update the insert buffer bitmap + in the same mini-transaction, the only safe + thing we can do here is the pessimistic + approach: reset the free bits. */ + ibuf_reset_free_bits(merge_block); + } else { + /* On uncompressed pages, the free bits will + never increase here. Thus, it is safe to + write the bits accurately in a separate + mini-transaction. */ + ibuf_update_free_bits_if_full(merge_block, + UNIV_PAGE_SIZE, + ULINT_UNDEFINED); + } + } + + ut_ad(page_validate(merge_page, index)); +#ifdef UNIV_ZIP_DEBUG + ut_a(!merge_page_zip || page_zip_validate(merge_page_zip, merge_page)); +#endif /* UNIV_ZIP_DEBUG */ + + /* Free the file page */ + btr_page_free(index, block, mtr); + + ut_ad(btr_check_node_ptr(index, merge_block, mtr)); + return(TRUE); +} + +/***************************************************************** +Discards a page that is the only page on its level. This will empty +the whole B-tree, leaving just an empty root page. This function +should never be reached, because btr_compress(), which is invoked in +delete operations, calls btr_lift_page_up() to flatten the B-tree. */ +static +void +btr_discard_only_page_on_level( +/*===========================*/ + dict_index_t* index, /* in: index tree */ + buf_block_t* block, /* in: page which is the only on its level */ + mtr_t* mtr) /* in: mtr */ +{ + ulint page_level = 0; + + while (buf_block_get_page_no(block) != dict_index_get_page(index)) { + btr_cur_t cursor; + buf_block_t* father; + const page_t* page = buf_block_get_frame(block); + + ut_a(page_get_n_recs(page) == 1); + ut_a(page_level == btr_page_get_level(page, mtr)); + ut_a(btr_page_get_prev(page, mtr) == FIL_NULL); + ut_a(btr_page_get_next(page, mtr) == FIL_NULL); + + ut_ad(mtr_memo_contains(mtr, block, MTR_MEMO_PAGE_X_FIX)); + btr_search_drop_page_hash_index(block); + + btr_page_get_father(index, block, mtr, &cursor); + father = btr_cur_get_block(&cursor); + + lock_update_discard(father, PAGE_HEAP_NO_SUPREMUM, block); + + /* Free the file page */ + btr_page_free(index, block, mtr); + + block = father; + page_level++; + } + + /* block is the root page, which must be empty, except + for the node pointer to the (now discarded) block(s). */ + +#ifdef UNIV_BTR_DEBUG + if (!dict_index_is_ibuf(index)) { + const page_t* root = buf_block_get_frame(block); + const ulint space = dict_index_get_space(index); + ut_a(btr_root_fseg_validate(FIL_PAGE_DATA + PAGE_BTR_SEG_LEAF + + root, space)); + ut_a(btr_root_fseg_validate(FIL_PAGE_DATA + PAGE_BTR_SEG_TOP + + root, space)); + } +#endif /* UNIV_BTR_DEBUG */ + + btr_page_empty(block, buf_block_get_page_zip(block), index, 0, mtr); + + /* We play it safe and reset the free bits for the root */ + if (!dict_index_is_clust(index)) { + ibuf_reset_free_bits(block); + } +} + +/***************************************************************** +Discards a page from a B-tree. This is used to remove the last record from +a B-tree page: the whole page must be removed at the same time. This cannot +be used for the root page, which is allowed to be empty. */ +UNIV_INTERN +void +btr_discard_page( +/*=============*/ + btr_cur_t* cursor, /* in: cursor on the page to discard: not on + the root page */ + mtr_t* mtr) /* in: mtr */ +{ + dict_index_t* index; + ulint space; + ulint zip_size; + ulint left_page_no; + ulint right_page_no; + buf_block_t* merge_block; + page_t* merge_page; + buf_block_t* block; + page_t* page; + rec_t* node_ptr; + + block = btr_cur_get_block(cursor); + index = btr_cur_get_index(cursor); + + ut_ad(dict_index_get_page(index) != buf_block_get_page_no(block)); + ut_ad(mtr_memo_contains(mtr, dict_index_get_lock(index), + MTR_MEMO_X_LOCK)); + ut_ad(mtr_memo_contains(mtr, block, MTR_MEMO_PAGE_X_FIX)); + space = dict_index_get_space(index); + zip_size = dict_table_zip_size(index->table); + + /* Decide the page which will inherit the locks */ + + left_page_no = btr_page_get_prev(buf_block_get_frame(block), mtr); + right_page_no = btr_page_get_next(buf_block_get_frame(block), mtr); + + if (left_page_no != FIL_NULL) { + merge_block = btr_block_get(space, zip_size, left_page_no, + RW_X_LATCH, mtr); + merge_page = buf_block_get_frame(merge_block); +#ifdef UNIV_BTR_DEBUG + ut_a(btr_page_get_next(merge_page, mtr) + == buf_block_get_page_no(block)); +#endif /* UNIV_BTR_DEBUG */ + } else if (right_page_no != FIL_NULL) { + merge_block = btr_block_get(space, zip_size, right_page_no, + RW_X_LATCH, mtr); + merge_page = buf_block_get_frame(merge_block); +#ifdef UNIV_BTR_DEBUG + ut_a(btr_page_get_prev(merge_page, mtr) + == buf_block_get_page_no(block)); +#endif /* UNIV_BTR_DEBUG */ + } else { + btr_discard_only_page_on_level(index, block, mtr); + + return; + } + + page = buf_block_get_frame(block); + ut_a(page_is_comp(merge_page) == page_is_comp(page)); + btr_search_drop_page_hash_index(block); + + if (left_page_no == FIL_NULL && !page_is_leaf(page)) { + + /* We have to mark the leftmost node pointer on the right + side page as the predefined minimum record */ + node_ptr = page_rec_get_next(page_get_infimum_rec(merge_page)); + + ut_ad(page_rec_is_user_rec(node_ptr)); + + /* This will make page_zip_validate() fail on merge_page + until btr_level_list_remove() completes. This is harmless, + because everything will take place within a single + mini-transaction and because writing to the redo log + is an atomic operation (performed by mtr_commit()). */ + btr_set_min_rec_mark(node_ptr, mtr); + } + + btr_node_ptr_delete(index, block, mtr); + + /* Remove the page from the level list */ + btr_level_list_remove(space, zip_size, page, mtr); +#ifdef UNIV_ZIP_DEBUG + { + page_zip_des_t* merge_page_zip + = buf_block_get_page_zip(merge_block); + ut_a(!merge_page_zip + || page_zip_validate(merge_page_zip, merge_page)); + } +#endif /* UNIV_ZIP_DEBUG */ + + if (left_page_no != FIL_NULL) { + lock_update_discard(merge_block, PAGE_HEAP_NO_SUPREMUM, + block); + } else { + lock_update_discard(merge_block, + lock_get_min_heap_no(merge_block), + block); + } + + /* Free the file page */ + btr_page_free(index, block, mtr); + + ut_ad(btr_check_node_ptr(index, merge_block, mtr)); +} + +#ifdef UNIV_BTR_PRINT +/***************************************************************** +Prints size info of a B-tree. */ +UNIV_INTERN +void +btr_print_size( +/*===========*/ + dict_index_t* index) /* in: index tree */ +{ + page_t* root; + fseg_header_t* seg; + mtr_t mtr; + + if (dict_index_is_ibuf(index)) { + fputs("Sorry, cannot print info of an ibuf tree:" + " use ibuf functions\n", stderr); + + return; + } + + mtr_start(&mtr); + + root = btr_root_get(index, &mtr); + + seg = root + PAGE_HEADER + PAGE_BTR_SEG_TOP; + + fputs("INFO OF THE NON-LEAF PAGE SEGMENT\n", stderr); + fseg_print(seg, &mtr); + + if (!(index->type & DICT_UNIVERSAL)) { + + seg = root + PAGE_HEADER + PAGE_BTR_SEG_LEAF; + + fputs("INFO OF THE LEAF PAGE SEGMENT\n", stderr); + fseg_print(seg, &mtr); + } + + mtr_commit(&mtr); +} + +/**************************************************************** +Prints recursively index tree pages. */ +static +void +btr_print_recursive( +/*================*/ + dict_index_t* index, /* in: index tree */ + buf_block_t* block, /* in: index page */ + ulint width, /* in: print this many entries from start + and end */ + mem_heap_t** heap, /* in/out: heap for rec_get_offsets() */ + ulint** offsets,/* in/out: buffer for rec_get_offsets() */ + mtr_t* mtr) /* in: mtr */ +{ + const page_t* page = buf_block_get_frame(block); + page_cur_t cursor; + ulint n_recs; + ulint i = 0; + mtr_t mtr2; + + ut_ad(mtr_memo_contains(mtr, block, MTR_MEMO_PAGE_X_FIX)); + fprintf(stderr, "NODE ON LEVEL %lu page number %lu\n", + (ulong) btr_page_get_level(page, mtr), + (ulong) buf_block_get_page_no(block)); + + page_print(block, index, width, width); + + n_recs = page_get_n_recs(page); + + page_cur_set_before_first(block, &cursor); + page_cur_move_to_next(&cursor); + + while (!page_cur_is_after_last(&cursor)) { + + if (page_is_leaf(page)) { + + /* If this is the leaf level, do nothing */ + + } else if ((i <= width) || (i >= n_recs - width)) { + + const rec_t* node_ptr; + + mtr_start(&mtr2); + + node_ptr = page_cur_get_rec(&cursor); + + *offsets = rec_get_offsets(node_ptr, index, *offsets, + ULINT_UNDEFINED, heap); + btr_print_recursive(index, + btr_node_ptr_get_child(node_ptr, + index, + *offsets, + &mtr2), + width, heap, offsets, &mtr2); + mtr_commit(&mtr2); + } + + page_cur_move_to_next(&cursor); + i++; + } +} + +/****************************************************************** +Prints directories and other info of all nodes in the tree. */ +UNIV_INTERN +void +btr_print_index( +/*============*/ + dict_index_t* index, /* in: index */ + ulint width) /* in: print this many entries from start + and end */ +{ + mtr_t mtr; + buf_block_t* root; + mem_heap_t* heap = NULL; + ulint offsets_[REC_OFFS_NORMAL_SIZE]; + ulint* offsets = offsets_; + rec_offs_init(offsets_); + + fputs("--------------------------\n" + "INDEX TREE PRINT\n", stderr); + + mtr_start(&mtr); + + root = btr_root_block_get(index, &mtr); + + btr_print_recursive(index, root, width, &heap, &offsets, &mtr); + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } + + mtr_commit(&mtr); + + btr_validate_index(index, NULL); +} +#endif /* UNIV_BTR_PRINT */ + +#ifdef UNIV_DEBUG +/**************************************************************** +Checks that the node pointer to a page is appropriate. */ +UNIV_INTERN +ibool +btr_check_node_ptr( +/*===============*/ + /* out: TRUE */ + dict_index_t* index, /* in: index tree */ + buf_block_t* block, /* in: index page */ + mtr_t* mtr) /* in: mtr */ +{ + mem_heap_t* heap; + dtuple_t* tuple; + ulint* offsets; + btr_cur_t cursor; + page_t* page = buf_block_get_frame(block); + + ut_ad(mtr_memo_contains(mtr, block, MTR_MEMO_PAGE_X_FIX)); + if (dict_index_get_page(index) == buf_block_get_page_no(block)) { + + return(TRUE); + } + + heap = mem_heap_create(256); + offsets = btr_page_get_father_block(NULL, heap, index, block, mtr, + &cursor); + + if (page_is_leaf(page)) { + + goto func_exit; + } + + tuple = dict_index_build_node_ptr( + index, page_rec_get_next(page_get_infimum_rec(page)), 0, heap, + btr_page_get_level(page, mtr)); + + ut_a(!cmp_dtuple_rec(tuple, btr_cur_get_rec(&cursor), offsets)); +func_exit: + mem_heap_free(heap); + + return(TRUE); +} +#endif /* UNIV_DEBUG */ + +/**************************************************************** +Display identification information for a record. */ +static +void +btr_index_rec_validate_report( +/*==========================*/ + const page_t* page, /* in: index page */ + const rec_t* rec, /* in: index record */ + const dict_index_t* index) /* in: index */ +{ + fputs("InnoDB: Record in ", stderr); + dict_index_name_print(stderr, NULL, index); + fprintf(stderr, ", page %lu, at offset %lu\n", + page_get_page_no(page), (ulint) page_offset(rec)); +} + +/**************************************************************** +Checks the size and number of fields in a record based on the definition of +the index. */ +UNIV_INTERN +ibool +btr_index_rec_validate( +/*===================*/ + /* out: TRUE if ok */ + const rec_t* rec, /* in: index record */ + const dict_index_t* index, /* in: index */ + ibool dump_on_error) /* in: TRUE if the function + should print hex dump of record + and page on error */ +{ + ulint len; + ulint n; + ulint i; + const page_t* page; + mem_heap_t* heap = NULL; + ulint offsets_[REC_OFFS_NORMAL_SIZE]; + ulint* offsets = offsets_; + rec_offs_init(offsets_); + + page = page_align(rec); + + if (UNIV_UNLIKELY(index->type & DICT_UNIVERSAL)) { + /* The insert buffer index tree can contain records from any + other index: we cannot check the number of fields or + their length */ + + return(TRUE); + } + + if (UNIV_UNLIKELY((ibool)!!page_is_comp(page) + != dict_table_is_comp(index->table))) { + btr_index_rec_validate_report(page, rec, index); + fprintf(stderr, "InnoDB: compact flag=%lu, should be %lu\n", + (ulong) !!page_is_comp(page), + (ulong) dict_table_is_comp(index->table)); + + return(FALSE); + } + + n = dict_index_get_n_fields(index); + + if (!page_is_comp(page) + && UNIV_UNLIKELY(rec_get_n_fields_old(rec) != n)) { + btr_index_rec_validate_report(page, rec, index); + fprintf(stderr, "InnoDB: has %lu fields, should have %lu\n", + (ulong) rec_get_n_fields_old(rec), (ulong) n); + + if (dump_on_error) { + buf_page_print(page, 0); + + fputs("InnoDB: corrupt record ", stderr); + rec_print_old(stderr, rec); + putc('\n', stderr); + } + return(FALSE); + } + + offsets = rec_get_offsets(rec, index, offsets, ULINT_UNDEFINED, &heap); + + for (i = 0; i < n; i++) { + ulint fixed_size = dict_col_get_fixed_size( + dict_index_get_nth_col(index, i)); + + rec_get_nth_field_offs(offsets, i, &len); + + /* Note that if fixed_size != 0, it equals the + length of a fixed-size column in the clustered index. + A prefix index of the column is of fixed, but different + length. When fixed_size == 0, prefix_len is the maximum + length of the prefix index column. */ + + if ((dict_index_get_nth_field(index, i)->prefix_len == 0 + && len != UNIV_SQL_NULL && fixed_size + && len != fixed_size) + || (dict_index_get_nth_field(index, i)->prefix_len > 0 + && len != UNIV_SQL_NULL + && len + > dict_index_get_nth_field(index, i)->prefix_len)) { + + btr_index_rec_validate_report(page, rec, index); + fprintf(stderr, + "InnoDB: field %lu len is %lu," + " should be %lu\n", + (ulong) i, (ulong) len, (ulong) fixed_size); + + if (dump_on_error) { + buf_page_print(page, 0); + + fputs("InnoDB: corrupt record ", stderr); + rec_print_new(stderr, rec, offsets); + putc('\n', stderr); + } + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } + return(FALSE); + } + } + + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } + return(TRUE); +} + +/**************************************************************** +Checks the size and number of fields in records based on the definition of +the index. */ +static +ibool +btr_index_page_validate( +/*====================*/ + /* out: TRUE if ok */ + buf_block_t* block, /* in: index page */ + dict_index_t* index) /* in: index */ +{ + page_cur_t cur; + ibool ret = TRUE; + + page_cur_set_before_first(block, &cur); + page_cur_move_to_next(&cur); + + for (;;) { + if (page_cur_is_after_last(&cur)) { + + break; + } + + if (!btr_index_rec_validate(cur.rec, index, TRUE)) { + + return(FALSE); + } + + page_cur_move_to_next(&cur); + } + + return(ret); +} + +/**************************************************************** +Report an error on one page of an index tree. */ +static +void +btr_validate_report1( +/*=================*/ + /* out: TRUE if ok */ + dict_index_t* index, /* in: index */ + ulint level, /* in: B-tree level */ + const buf_block_t* block) /* in: index page */ +{ + fprintf(stderr, "InnoDB: Error in page %lu of ", + buf_block_get_page_no(block)); + dict_index_name_print(stderr, NULL, index); + if (level) { + fprintf(stderr, ", index tree level %lu", level); + } + putc('\n', stderr); +} + +/**************************************************************** +Report an error on two pages of an index tree. */ +static +void +btr_validate_report2( +/*=================*/ + /* out: TRUE if ok */ + const dict_index_t* index, /* in: index */ + ulint level, /* in: B-tree level */ + const buf_block_t* block1, /* in: first index page */ + const buf_block_t* block2) /* in: second index page */ +{ + fprintf(stderr, "InnoDB: Error in pages %lu and %lu of ", + buf_block_get_page_no(block1), + buf_block_get_page_no(block2)); + dict_index_name_print(stderr, NULL, index); + if (level) { + fprintf(stderr, ", index tree level %lu", level); + } + putc('\n', stderr); +} + +/**************************************************************** +Validates index tree level. */ +static +ibool +btr_validate_level( +/*===============*/ + /* out: TRUE if ok */ + dict_index_t* index, /* in: index tree */ + trx_t* trx, /* in: transaction or NULL */ + ulint level) /* in: level number */ +{ + ulint space; + ulint zip_size; + buf_block_t* block; + page_t* page; + buf_block_t* right_block = 0; /* remove warning */ + page_t* right_page = 0; /* remove warning */ + page_t* father_page; + btr_cur_t node_cur; + btr_cur_t right_node_cur; + rec_t* rec; + ulint right_page_no; + ulint left_page_no; + page_cur_t cursor; + dtuple_t* node_ptr_tuple; + ibool ret = TRUE; + mtr_t mtr; + mem_heap_t* heap = mem_heap_create(256); + ulint* offsets = NULL; + ulint* offsets2= NULL; +#ifdef UNIV_ZIP_DEBUG + page_zip_des_t* page_zip; +#endif /* UNIV_ZIP_DEBUG */ + + mtr_start(&mtr); + + mtr_x_lock(dict_index_get_lock(index), &mtr); + + block = btr_root_block_get(index, &mtr); + page = buf_block_get_frame(block); + + space = dict_index_get_space(index); + zip_size = dict_table_zip_size(index->table); + + while (level != btr_page_get_level(page, &mtr)) { + const rec_t* node_ptr; + + ut_a(space == buf_block_get_space(block)); + ut_a(space == page_get_space_id(page)); +#ifdef UNIV_ZIP_DEBUG + page_zip = buf_block_get_page_zip(block); + ut_a(!page_zip || page_zip_validate(page_zip, page)); +#endif /* UNIV_ZIP_DEBUG */ + ut_a(!page_is_leaf(page)); + + page_cur_set_before_first(block, &cursor); + page_cur_move_to_next(&cursor); + + node_ptr = page_cur_get_rec(&cursor); + offsets = rec_get_offsets(node_ptr, index, offsets, + ULINT_UNDEFINED, &heap); + block = btr_node_ptr_get_child(node_ptr, index, offsets, &mtr); + page = buf_block_get_frame(block); + } + + /* Now we are on the desired level. Loop through the pages on that + level. */ +loop: + if (trx_is_interrupted(trx)) { + mtr_commit(&mtr); + mem_heap_free(heap); + return(ret); + } + mem_heap_empty(heap); + offsets = offsets2 = NULL; + mtr_x_lock(dict_index_get_lock(index), &mtr); + +#ifdef UNIV_ZIP_DEBUG + page_zip = buf_block_get_page_zip(block); + ut_a(!page_zip || page_zip_validate(page_zip, page)); +#endif /* UNIV_ZIP_DEBUG */ + + /* Check ordering etc. of records */ + + if (!page_validate(page, index)) { + btr_validate_report1(index, level, block); + + ret = FALSE; + } else if (level == 0) { + /* We are on level 0. Check that the records have the right + number of fields, and field lengths are right. */ + + if (!btr_index_page_validate(block, index)) { + + ret = FALSE; + } + } + + ut_a(btr_page_get_level(page, &mtr) == level); + + right_page_no = btr_page_get_next(page, &mtr); + left_page_no = btr_page_get_prev(page, &mtr); + + ut_a(page_get_n_recs(page) > 0 || (level == 0 + && page_get_page_no(page) + == dict_index_get_page(index))); + + if (right_page_no != FIL_NULL) { + const rec_t* right_rec; + right_block = btr_block_get(space, zip_size, right_page_no, + RW_X_LATCH, &mtr); + right_page = buf_block_get_frame(right_block); + if (UNIV_UNLIKELY(btr_page_get_prev(right_page, &mtr) + != page_get_page_no(page))) { + btr_validate_report2(index, level, block, right_block); + fputs("InnoDB: broken FIL_PAGE_NEXT" + " or FIL_PAGE_PREV links\n", stderr); + buf_page_print(page, 0); + buf_page_print(right_page, 0); + + ret = FALSE; + } + + if (UNIV_UNLIKELY(page_is_comp(right_page) + != page_is_comp(page))) { + btr_validate_report2(index, level, block, right_block); + fputs("InnoDB: 'compact' flag mismatch\n", stderr); + buf_page_print(page, 0); + buf_page_print(right_page, 0); + + ret = FALSE; + + goto node_ptr_fails; + } + + rec = page_rec_get_prev(page_get_supremum_rec(page)); + right_rec = page_rec_get_next(page_get_infimum_rec( + right_page)); + offsets = rec_get_offsets(rec, index, + offsets, ULINT_UNDEFINED, &heap); + offsets2 = rec_get_offsets(right_rec, index, + offsets2, ULINT_UNDEFINED, &heap); + if (UNIV_UNLIKELY(cmp_rec_rec(rec, right_rec, + offsets, offsets2, + index) >= 0)) { + + btr_validate_report2(index, level, block, right_block); + + fputs("InnoDB: records in wrong order" + " on adjacent pages\n", stderr); + + buf_page_print(page, 0); + buf_page_print(right_page, 0); + + fputs("InnoDB: record ", stderr); + rec = page_rec_get_prev(page_get_supremum_rec(page)); + rec_print(stderr, rec, index); + putc('\n', stderr); + fputs("InnoDB: record ", stderr); + rec = page_rec_get_next( + page_get_infimum_rec(right_page)); + rec_print(stderr, rec, index); + putc('\n', stderr); + + ret = FALSE; + } + } + + if (level > 0 && left_page_no == FIL_NULL) { + ut_a(REC_INFO_MIN_REC_FLAG & rec_get_info_bits( + page_rec_get_next(page_get_infimum_rec(page)), + page_is_comp(page))); + } + + if (buf_block_get_page_no(block) != dict_index_get_page(index)) { + + /* Check father node pointers */ + + rec_t* node_ptr; + + offsets = btr_page_get_father_block(offsets, heap, index, + block, &mtr, &node_cur); + father_page = btr_cur_get_page(&node_cur); + node_ptr = btr_cur_get_rec(&node_cur); + + btr_cur_position( + index, page_rec_get_prev(page_get_supremum_rec(page)), + block, &node_cur); + offsets = btr_page_get_father_node_ptr(offsets, heap, + &node_cur, &mtr); + + if (UNIV_UNLIKELY(node_ptr != btr_cur_get_rec(&node_cur)) + || UNIV_UNLIKELY(btr_node_ptr_get_child_page_no(node_ptr, + offsets) + != buf_block_get_page_no(block))) { + + btr_validate_report1(index, level, block); + + fputs("InnoDB: node pointer to the page is wrong\n", + stderr); + + buf_page_print(father_page, 0); + buf_page_print(page, 0); + + fputs("InnoDB: node ptr ", stderr); + rec_print(stderr, node_ptr, index); + + rec = btr_cur_get_rec(&node_cur); + fprintf(stderr, "\n" + "InnoDB: node ptr child page n:o %lu\n", + (ulong) btr_node_ptr_get_child_page_no( + rec, offsets)); + + fputs("InnoDB: record on page ", stderr); + rec_print_new(stderr, rec, offsets); + putc('\n', stderr); + ret = FALSE; + + goto node_ptr_fails; + } + + if (!page_is_leaf(page)) { + node_ptr_tuple = dict_index_build_node_ptr( + index, + page_rec_get_next(page_get_infimum_rec(page)), + 0, heap, btr_page_get_level(page, &mtr)); + + if (cmp_dtuple_rec(node_ptr_tuple, node_ptr, + offsets)) { + const rec_t* first_rec = page_rec_get_next( + page_get_infimum_rec(page)); + + btr_validate_report1(index, level, block); + + buf_page_print(father_page, 0); + buf_page_print(page, 0); + + fputs("InnoDB: Error: node ptrs differ" + " on levels > 0\n" + "InnoDB: node ptr ", stderr); + rec_print_new(stderr, node_ptr, offsets); + fputs("InnoDB: first rec ", stderr); + rec_print(stderr, first_rec, index); + putc('\n', stderr); + ret = FALSE; + + goto node_ptr_fails; + } + } + + if (left_page_no == FIL_NULL) { + ut_a(node_ptr == page_rec_get_next( + page_get_infimum_rec(father_page))); + ut_a(btr_page_get_prev(father_page, &mtr) == FIL_NULL); + } + + if (right_page_no == FIL_NULL) { + ut_a(node_ptr == page_rec_get_prev( + page_get_supremum_rec(father_page))); + ut_a(btr_page_get_next(father_page, &mtr) == FIL_NULL); + } else { + const rec_t* right_node_ptr + = page_rec_get_next(node_ptr); + + offsets = btr_page_get_father_block( + offsets, heap, index, right_block, + &mtr, &right_node_cur); + if (right_node_ptr + != page_get_supremum_rec(father_page)) { + + if (btr_cur_get_rec(&right_node_cur) + != right_node_ptr) { + ret = FALSE; + fputs("InnoDB: node pointer to" + " the right page is wrong\n", + stderr); + + btr_validate_report1(index, level, + block); + + buf_page_print(father_page, 0); + buf_page_print(page, 0); + buf_page_print(right_page, 0); + } + } else { + page_t* right_father_page + = btr_cur_get_page(&right_node_cur); + + if (btr_cur_get_rec(&right_node_cur) + != page_rec_get_next( + page_get_infimum_rec( + right_father_page))) { + ret = FALSE; + fputs("InnoDB: node pointer 2 to" + " the right page is wrong\n", + stderr); + + btr_validate_report1(index, level, + block); + + buf_page_print(father_page, 0); + buf_page_print(right_father_page, 0); + buf_page_print(page, 0); + buf_page_print(right_page, 0); + } + + if (page_get_page_no(right_father_page) + != btr_page_get_next(father_page, &mtr)) { + + ret = FALSE; + fputs("InnoDB: node pointer 3 to" + " the right page is wrong\n", + stderr); + + btr_validate_report1(index, level, + block); + + buf_page_print(father_page, 0); + buf_page_print(right_father_page, 0); + buf_page_print(page, 0); + buf_page_print(right_page, 0); + } + } + } + } + +node_ptr_fails: + /* Commit the mini-transaction to release the latch on 'page'. + Re-acquire the latch on right_page, which will become 'page' + on the next loop. The page has already been checked. */ + mtr_commit(&mtr); + + if (right_page_no != FIL_NULL) { + mtr_start(&mtr); + + block = btr_block_get(space, zip_size, right_page_no, + RW_X_LATCH, &mtr); + page = buf_block_get_frame(block); + + goto loop; + } + + mem_heap_free(heap); + return(ret); +} + +/****************************************************************** +Checks the consistency of an index tree. */ +UNIV_INTERN +ibool +btr_validate_index( +/*===============*/ + /* out: TRUE if ok */ + dict_index_t* index, /* in: index */ + trx_t* trx) /* in: transaction or NULL */ +{ + mtr_t mtr; + page_t* root; + ulint i; + ulint n; + + mtr_start(&mtr); + mtr_x_lock(dict_index_get_lock(index), &mtr); + + root = btr_root_get(index, &mtr); + n = btr_page_get_level(root, &mtr); + + for (i = 0; i <= n && !trx_is_interrupted(trx); i++) { + if (!btr_validate_level(index, trx, n - i)) { + + mtr_commit(&mtr); + + return(FALSE); + } + } + + mtr_commit(&mtr); + + return(TRUE); +} === added file 'storage/xtradb/btr/btr0cur.c' --- a/storage/xtradb/btr/btr0cur.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/btr/btr0cur.c 2009-05-04 02:45:47 +0000 @@ -0,0 +1,4809 @@ +/***************************************************************************** + +Copyright (c) 1994, 2009, Innobase Oy. All Rights Reserved. +Copyright (c) 2008, Google Inc. + +Portions of this file contain modifications contributed and copyrighted by +Google, Inc. Those modifications are gratefully acknowledged and are described +briefly in the InnoDB documentation. The contributions by Google are +incorporated with their permission, and subject to the conditions contained in +the file COPYING.Google. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +The index tree cursor + +All changes that row operations make to a B-tree or the records +there must go through this module! Undo log records are written here +of every modify or insert of a clustered index record. + + NOTE!!! +To make sure we do not run out of disk space during a pessimistic +insert or update, we have to reserve 2 x the height of the index tree +many pages in the tablespace before we start the operation, because +if leaf splitting has been started, it is difficult to undo, except +by crashing the database and doing a roll-forward. + +Created 10/16/1994 Heikki Tuuri +*******************************************************/ + +#include "btr0cur.h" + +#ifdef UNIV_NONINL +#include "btr0cur.ic" +#endif + +#include "page0page.h" +#include "page0zip.h" +#include "rem0rec.h" +#include "rem0cmp.h" +#include "buf0lru.h" +#include "btr0btr.h" +#include "btr0sea.h" +#include "row0upd.h" +#include "trx0rec.h" +#include "trx0roll.h" /* trx_is_recv() */ +#include "que0que.h" +#include "row0row.h" +#include "srv0srv.h" +#include "ibuf0ibuf.h" +#include "lock0lock.h" +#include "zlib.h" + +#ifdef UNIV_DEBUG +/* If the following is set to TRUE, this module prints a lot of +trace information of individual record operations */ +UNIV_INTERN ibool btr_cur_print_record_ops = FALSE; +#endif /* UNIV_DEBUG */ + +UNIV_INTERN ulint btr_cur_n_non_sea = 0; +UNIV_INTERN ulint btr_cur_n_sea = 0; +UNIV_INTERN ulint btr_cur_n_non_sea_old = 0; +UNIV_INTERN ulint btr_cur_n_sea_old = 0; + +/* In the optimistic insert, if the insert does not fit, but this much space +can be released by page reorganize, then it is reorganized */ + +#define BTR_CUR_PAGE_REORGANIZE_LIMIT (UNIV_PAGE_SIZE / 32) + +/* The structure of a BLOB part header */ +/*--------------------------------------*/ +#define BTR_BLOB_HDR_PART_LEN 0 /* BLOB part len on this + page */ +#define BTR_BLOB_HDR_NEXT_PAGE_NO 4 /* next BLOB part page no, + FIL_NULL if none */ +/*--------------------------------------*/ +#define BTR_BLOB_HDR_SIZE 8 + +/* A BLOB field reference full of zero, for use in assertions and tests. +Initially, BLOB field references are set to zero, in +dtuple_convert_big_rec(). */ +UNIV_INTERN const byte field_ref_zero[BTR_EXTERN_FIELD_REF_SIZE]; + +/*********************************************************************** +Marks all extern fields in a record as owned by the record. This function +should be called if the delete mark of a record is removed: a not delete +marked record always owns all its extern fields. */ +static +void +btr_cur_unmark_extern_fields( +/*=========================*/ + page_zip_des_t* page_zip,/* in/out: compressed page whose uncompressed + part will be updated, or NULL */ + rec_t* rec, /* in/out: record in a clustered index */ + dict_index_t* index, /* in: index of the page */ + const ulint* offsets,/* in: array returned by rec_get_offsets() */ + mtr_t* mtr); /* in: mtr, or NULL if not logged */ +/*********************************************************************** +Adds path information to the cursor for the current page, for which +the binary search has been performed. */ +static +void +btr_cur_add_path_info( +/*==================*/ + btr_cur_t* cursor, /* in: cursor positioned on a page */ + ulint height, /* in: height of the page in tree; + 0 means leaf node */ + ulint root_height); /* in: root node height in tree */ +/*************************************************************** +Frees the externally stored fields for a record, if the field is mentioned +in the update vector. */ +static +void +btr_rec_free_updated_extern_fields( +/*===============================*/ + dict_index_t* index, /* in: index of rec; the index tree MUST be + X-latched */ + rec_t* rec, /* in: record */ + page_zip_des_t* page_zip,/* in: compressed page whose uncompressed + part will be updated, or NULL */ + const ulint* offsets,/* in: rec_get_offsets(rec, index) */ + const upd_t* update, /* in: update vector */ + enum trx_rb_ctx rb_ctx, /* in: rollback context */ + mtr_t* mtr); /* in: mini-transaction handle which contains + an X-latch to record page and to the tree */ +/*************************************************************** +Frees the externally stored fields for a record. */ +static +void +btr_rec_free_externally_stored_fields( +/*==================================*/ + dict_index_t* index, /* in: index of the data, the index + tree MUST be X-latched */ + rec_t* rec, /* in: record */ + const ulint* offsets,/* in: rec_get_offsets(rec, index) */ + page_zip_des_t* page_zip,/* in: compressed page whose uncompressed + part will be updated, or NULL */ + enum trx_rb_ctx rb_ctx, /* in: rollback context */ + mtr_t* mtr); /* in: mini-transaction handle which contains + an X-latch to record page and to the index + tree */ +/*************************************************************** +Gets the externally stored size of a record, in units of a database page. */ +static +ulint +btr_rec_get_externally_stored_len( +/*==============================*/ + /* out: externally stored part, + in units of a database page */ + rec_t* rec, /* in: record */ + const ulint* offsets);/* in: array returned by rec_get_offsets() */ + +/********************************************************** +The following function is used to set the deleted bit of a record. */ +UNIV_INLINE +void +btr_rec_set_deleted_flag( +/*=====================*/ + /* out: TRUE on success; + FALSE on page_zip overflow */ + rec_t* rec, /* in/out: physical record */ + page_zip_des_t* page_zip,/* in/out: compressed page (or NULL) */ + ulint flag) /* in: nonzero if delete marked */ +{ + if (page_rec_is_comp(rec)) { + rec_set_deleted_flag_new(rec, page_zip, flag); + } else { + ut_ad(!page_zip); + rec_set_deleted_flag_old(rec, flag); + } +} + +/*==================== B-TREE SEARCH =========================*/ + +/************************************************************************ +Latches the leaf page or pages requested. */ +static +void +btr_cur_latch_leaves( +/*=================*/ + page_t* page, /* in: leaf page where the search + converged */ + ulint space, /* in: space id */ + ulint zip_size, /* in: compressed page size in bytes + or 0 for uncompressed pages */ + ulint page_no, /* in: page number of the leaf */ + ulint latch_mode, /* in: BTR_SEARCH_LEAF, ... */ + btr_cur_t* cursor, /* in: cursor */ + mtr_t* mtr) /* in: mtr */ +{ + ulint mode; + ulint left_page_no; + ulint right_page_no; + buf_block_t* get_block; + + ut_ad(page && mtr); + + switch (latch_mode) { + case BTR_SEARCH_LEAF: + case BTR_MODIFY_LEAF: + mode = latch_mode == BTR_SEARCH_LEAF ? RW_S_LATCH : RW_X_LATCH; + get_block = btr_block_get(space, zip_size, page_no, mode, mtr); +#ifdef UNIV_BTR_DEBUG + ut_a(page_is_comp(get_block->frame) == page_is_comp(page)); +#endif /* UNIV_BTR_DEBUG */ + get_block->check_index_page_at_flush = TRUE; + return; + case BTR_MODIFY_TREE: + /* x-latch also brothers from left to right */ + left_page_no = btr_page_get_prev(page, mtr); + + if (left_page_no != FIL_NULL) { + get_block = btr_block_get(space, zip_size, + left_page_no, + RW_X_LATCH, mtr); +#ifdef UNIV_BTR_DEBUG + ut_a(page_is_comp(get_block->frame) + == page_is_comp(page)); + ut_a(btr_page_get_next(get_block->frame, mtr) + == page_get_page_no(page)); +#endif /* UNIV_BTR_DEBUG */ + get_block->check_index_page_at_flush = TRUE; + } + + get_block = btr_block_get(space, zip_size, page_no, + RW_X_LATCH, mtr); +#ifdef UNIV_BTR_DEBUG + ut_a(page_is_comp(get_block->frame) == page_is_comp(page)); +#endif /* UNIV_BTR_DEBUG */ + get_block->check_index_page_at_flush = TRUE; + + right_page_no = btr_page_get_next(page, mtr); + + if (right_page_no != FIL_NULL) { + get_block = btr_block_get(space, zip_size, + right_page_no, + RW_X_LATCH, mtr); +#ifdef UNIV_BTR_DEBUG + ut_a(page_is_comp(get_block->frame) + == page_is_comp(page)); + ut_a(btr_page_get_prev(get_block->frame, mtr) + == page_get_page_no(page)); +#endif /* UNIV_BTR_DEBUG */ + get_block->check_index_page_at_flush = TRUE; + } + + return; + + case BTR_SEARCH_PREV: + case BTR_MODIFY_PREV: + mode = latch_mode == BTR_SEARCH_PREV ? RW_S_LATCH : RW_X_LATCH; + /* latch also left brother */ + left_page_no = btr_page_get_prev(page, mtr); + + if (left_page_no != FIL_NULL) { + get_block = btr_block_get(space, zip_size, + left_page_no, mode, mtr); + cursor->left_block = get_block; +#ifdef UNIV_BTR_DEBUG + ut_a(page_is_comp(get_block->frame) + == page_is_comp(page)); + ut_a(btr_page_get_next(get_block->frame, mtr) + == page_get_page_no(page)); +#endif /* UNIV_BTR_DEBUG */ + get_block->check_index_page_at_flush = TRUE; + } + + get_block = btr_block_get(space, zip_size, page_no, mode, mtr); +#ifdef UNIV_BTR_DEBUG + ut_a(page_is_comp(get_block->frame) == page_is_comp(page)); +#endif /* UNIV_BTR_DEBUG */ + get_block->check_index_page_at_flush = TRUE; + return; + } + + ut_error; +} + +/************************************************************************ +Searches an index tree and positions a tree cursor on a given level. +NOTE: n_fields_cmp in tuple must be set so that it cannot be compared +to node pointer page number fields on the upper levels of the tree! +Note that if mode is PAGE_CUR_LE, which is used in inserts, then +cursor->up_match and cursor->low_match both will have sensible values. +If mode is PAGE_CUR_GE, then up_match will a have a sensible value. + +If mode is PAGE_CUR_LE , cursor is left at the place where an insert of the +search tuple should be performed in the B-tree. InnoDB does an insert +immediately after the cursor. Thus, the cursor may end up on a user record, +or on a page infimum record. */ +UNIV_INTERN +void +btr_cur_search_to_nth_level( +/*========================*/ + dict_index_t* index, /* in: index */ + ulint level, /* in: the tree level of search */ + const dtuple_t* tuple, /* in: data tuple; NOTE: n_fields_cmp in + tuple must be set so that it cannot get + compared to the node ptr page number field! */ + ulint mode, /* in: PAGE_CUR_L, ...; + Inserts should always be made using + PAGE_CUR_LE to search the position! */ + ulint latch_mode, /* in: BTR_SEARCH_LEAF, ..., ORed with + BTR_INSERT and BTR_ESTIMATE; + cursor->left_block is used to store a pointer + to the left neighbor page, in the cases + BTR_SEARCH_PREV and BTR_MODIFY_PREV; + NOTE that if has_search_latch + is != 0, we maybe do not have a latch set + on the cursor page, we assume + the caller uses his search latch + to protect the record! */ + btr_cur_t* cursor, /* in/out: tree cursor; the cursor page is + s- or x-latched, but see also above! */ + ulint has_search_latch,/* in: info on the latch mode the + caller currently has on btr_search_latch: + RW_S_LATCH, or 0 */ + mtr_t* mtr) /* in: mtr */ +{ + page_cur_t* page_cursor; + page_t* page; + buf_block_t* guess; + rec_t* node_ptr; + ulint page_no; + ulint space; + ulint up_match; + ulint up_bytes; + ulint low_match; + ulint low_bytes; + ulint height; + ulint savepoint; + ulint page_mode; + ulint insert_planned; + ulint estimate; + ulint ignore_sec_unique; + ulint root_height = 0; /* remove warning */ +#ifdef BTR_CUR_ADAPT + btr_search_t* info; +#endif + mem_heap_t* heap = NULL; + ulint offsets_[REC_OFFS_NORMAL_SIZE]; + ulint* offsets = offsets_; + rec_offs_init(offsets_); + /* Currently, PAGE_CUR_LE is the only search mode used for searches + ending to upper levels */ + + ut_ad(level == 0 || mode == PAGE_CUR_LE); + ut_ad(dict_index_check_search_tuple(index, tuple)); + ut_ad(!dict_index_is_ibuf(index) || ibuf_inside()); + ut_ad(dtuple_check_typed(tuple)); + +#ifdef UNIV_DEBUG + cursor->up_match = ULINT_UNDEFINED; + cursor->low_match = ULINT_UNDEFINED; +#endif + insert_planned = latch_mode & BTR_INSERT; + estimate = latch_mode & BTR_ESTIMATE; + ignore_sec_unique = latch_mode & BTR_IGNORE_SEC_UNIQUE; + latch_mode = latch_mode & ~(BTR_INSERT | BTR_ESTIMATE + | BTR_IGNORE_SEC_UNIQUE); + + ut_ad(!insert_planned || (mode == PAGE_CUR_LE)); + + cursor->flag = BTR_CUR_BINARY; + cursor->index = index; + +#ifndef BTR_CUR_ADAPT + guess = NULL; +#else + info = btr_search_get_info(index); + + guess = info->root_guess; + +#ifdef BTR_CUR_HASH_ADAPT + +#ifdef UNIV_SEARCH_PERF_STAT + info->n_searches++; +#endif + if (rw_lock_get_writer(&btr_search_latch) == RW_LOCK_NOT_LOCKED + && latch_mode <= BTR_MODIFY_LEAF && info->last_hash_succ + && !estimate +#ifdef PAGE_CUR_LE_OR_EXTENDS + && mode != PAGE_CUR_LE_OR_EXTENDS +#endif /* PAGE_CUR_LE_OR_EXTENDS */ + /* If !has_search_latch, we do a dirty read of + btr_search_enabled below, and btr_search_guess_on_hash() + will have to check it again. */ + && UNIV_LIKELY(btr_search_enabled) + && btr_search_guess_on_hash(index, info, tuple, mode, + latch_mode, cursor, + has_search_latch, mtr)) { + + /* Search using the hash index succeeded */ + + ut_ad(cursor->up_match != ULINT_UNDEFINED + || mode != PAGE_CUR_GE); + ut_ad(cursor->up_match != ULINT_UNDEFINED + || mode != PAGE_CUR_LE); + ut_ad(cursor->low_match != ULINT_UNDEFINED + || mode != PAGE_CUR_LE); + btr_cur_n_sea++; + + return; + } +#endif /* BTR_CUR_HASH_ADAPT */ +#endif /* BTR_CUR_ADAPT */ + btr_cur_n_non_sea++; + + /* If the hash search did not succeed, do binary search down the + tree */ + + if (has_search_latch) { + /* Release possible search latch to obey latching order */ + rw_lock_s_unlock(&btr_search_latch); + } + + /* Store the position of the tree latch we push to mtr so that we + know how to release it when we have latched leaf node(s) */ + + savepoint = mtr_set_savepoint(mtr); + + if (latch_mode == BTR_MODIFY_TREE) { + mtr_x_lock(dict_index_get_lock(index), mtr); + + } else if (latch_mode == BTR_CONT_MODIFY_TREE) { + /* Do nothing */ + ut_ad(mtr_memo_contains(mtr, dict_index_get_lock(index), + MTR_MEMO_X_LOCK)); + } else { + mtr_s_lock(dict_index_get_lock(index), mtr); + } + + page_cursor = btr_cur_get_page_cur(cursor); + + space = dict_index_get_space(index); + page_no = dict_index_get_page(index); + + up_match = 0; + up_bytes = 0; + low_match = 0; + low_bytes = 0; + + height = ULINT_UNDEFINED; + + /* We use these modified search modes on non-leaf levels of the + B-tree. These let us end up in the right B-tree leaf. In that leaf + we use the original search mode. */ + + switch (mode) { + case PAGE_CUR_GE: + page_mode = PAGE_CUR_L; + break; + case PAGE_CUR_G: + page_mode = PAGE_CUR_LE; + break; + default: +#ifdef PAGE_CUR_LE_OR_EXTENDS + ut_ad(mode == PAGE_CUR_L || mode == PAGE_CUR_LE + || mode == PAGE_CUR_LE_OR_EXTENDS); +#else /* PAGE_CUR_LE_OR_EXTENDS */ + ut_ad(mode == PAGE_CUR_L || mode == PAGE_CUR_LE); +#endif /* PAGE_CUR_LE_OR_EXTENDS */ + page_mode = mode; + break; + } + + /* Loop and search until we arrive at the desired level */ + + for (;;) { + ulint zip_size; + buf_block_t* block; + ulint rw_latch; + ulint buf_mode; + + zip_size = dict_table_zip_size(index->table); + rw_latch = RW_NO_LATCH; + buf_mode = BUF_GET; + + if (height == 0 && latch_mode <= BTR_MODIFY_LEAF) { + + rw_latch = latch_mode; + + if (insert_planned + && ibuf_should_try(index, ignore_sec_unique)) { + + /* Try insert to the insert buffer if the + page is not in the buffer pool */ + + buf_mode = BUF_GET_IF_IN_POOL; + } + } + +retry_page_get: + block = buf_page_get_gen(space, zip_size, page_no, + rw_latch, guess, buf_mode, + __FILE__, __LINE__, mtr); + if (block == NULL) { + /* This must be a search to perform an insert; + try insert to the insert buffer */ + + ut_ad(buf_mode == BUF_GET_IF_IN_POOL); + ut_ad(insert_planned); + ut_ad(cursor->thr); + + if (ibuf_insert(tuple, index, space, zip_size, + page_no, cursor->thr)) { + /* Insertion to the insert buffer succeeded */ + cursor->flag = BTR_CUR_INSERT_TO_IBUF; + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } + goto func_exit; + } + + /* Insert to the insert buffer did not succeed: + retry page get */ + + buf_mode = BUF_GET; + + goto retry_page_get; + } + + page = buf_block_get_frame(block); + + block->check_index_page_at_flush = TRUE; + + if (rw_latch != RW_NO_LATCH) { +#ifdef UNIV_ZIP_DEBUG + const page_zip_des_t* page_zip + = buf_block_get_page_zip(block); + ut_a(!page_zip || page_zip_validate(page_zip, page)); +#endif /* UNIV_ZIP_DEBUG */ + + buf_block_dbg_add_level(block, SYNC_TREE_NODE); + } + + ut_ad(0 == ut_dulint_cmp(index->id, + btr_page_get_index_id(page))); + + if (UNIV_UNLIKELY(height == ULINT_UNDEFINED)) { + /* We are in the root node */ + + height = btr_page_get_level(page, mtr); + root_height = height; + cursor->tree_height = root_height + 1; +#ifdef BTR_CUR_ADAPT + if (block != guess) { + info->root_guess = block; + } +#endif + } + + if (height == 0) { + if (rw_latch == RW_NO_LATCH) { + + btr_cur_latch_leaves(page, space, zip_size, + page_no, latch_mode, + cursor, mtr); + } + + if ((latch_mode != BTR_MODIFY_TREE) + && (latch_mode != BTR_CONT_MODIFY_TREE)) { + + /* Release the tree s-latch */ + + mtr_release_s_latch_at_savepoint( + mtr, savepoint, + dict_index_get_lock(index)); + } + + page_mode = mode; + } + + page_cur_search_with_match(block, index, tuple, page_mode, + &up_match, &up_bytes, + &low_match, &low_bytes, + page_cursor); + + if (estimate) { + btr_cur_add_path_info(cursor, height, root_height); + } + + /* If this is the desired level, leave the loop */ + + ut_ad(height == btr_page_get_level( + page_cur_get_page(page_cursor), mtr)); + + if (level == height) { + + if (level > 0) { + /* x-latch the page */ + page = btr_page_get(space, zip_size, + page_no, RW_X_LATCH, mtr); + ut_a((ibool)!!page_is_comp(page) + == dict_table_is_comp(index->table)); + } + + break; + } + + ut_ad(height > 0); + + height--; + + guess = NULL; + + node_ptr = page_cur_get_rec(page_cursor); + offsets = rec_get_offsets(node_ptr, cursor->index, offsets, + ULINT_UNDEFINED, &heap); + /* Go to the child node */ + page_no = btr_node_ptr_get_child_page_no(node_ptr, offsets); + } + + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } + + if (level == 0) { + cursor->low_match = low_match; + cursor->low_bytes = low_bytes; + cursor->up_match = up_match; + cursor->up_bytes = up_bytes; + +#ifdef BTR_CUR_ADAPT + /* We do a dirty read of btr_search_enabled here. We + will properly check btr_search_enabled again in + btr_search_build_page_hash_index() before building a + page hash index, while holding btr_search_latch. */ + if (UNIV_LIKELY(btr_search_enabled)) { + + btr_search_info_update(index, cursor); + } +#endif + ut_ad(cursor->up_match != ULINT_UNDEFINED + || mode != PAGE_CUR_GE); + ut_ad(cursor->up_match != ULINT_UNDEFINED + || mode != PAGE_CUR_LE); + ut_ad(cursor->low_match != ULINT_UNDEFINED + || mode != PAGE_CUR_LE); + } + +func_exit: + if (has_search_latch) { + + rw_lock_s_lock(&btr_search_latch); + } +} + +/********************************************************************* +Opens a cursor at either end of an index. */ +UNIV_INTERN +void +btr_cur_open_at_index_side( +/*=======================*/ + ibool from_left, /* in: TRUE if open to the low end, + FALSE if to the high end */ + dict_index_t* index, /* in: index */ + ulint latch_mode, /* in: latch mode */ + btr_cur_t* cursor, /* in: cursor */ + mtr_t* mtr) /* in: mtr */ +{ + page_cur_t* page_cursor; + ulint page_no; + ulint space; + ulint zip_size; + ulint height; + ulint root_height = 0; /* remove warning */ + rec_t* node_ptr; + ulint estimate; + ulint savepoint; + mem_heap_t* heap = NULL; + ulint offsets_[REC_OFFS_NORMAL_SIZE]; + ulint* offsets = offsets_; + rec_offs_init(offsets_); + + estimate = latch_mode & BTR_ESTIMATE; + latch_mode = latch_mode & ~BTR_ESTIMATE; + + /* Store the position of the tree latch we push to mtr so that we + know how to release it when we have latched the leaf node */ + + savepoint = mtr_set_savepoint(mtr); + + if (latch_mode == BTR_MODIFY_TREE) { + mtr_x_lock(dict_index_get_lock(index), mtr); + } else { + mtr_s_lock(dict_index_get_lock(index), mtr); + } + + page_cursor = btr_cur_get_page_cur(cursor); + cursor->index = index; + + space = dict_index_get_space(index); + zip_size = dict_table_zip_size(index->table); + page_no = dict_index_get_page(index); + + height = ULINT_UNDEFINED; + + for (;;) { + buf_block_t* block; + page_t* page; + block = buf_page_get_gen(space, zip_size, page_no, + RW_NO_LATCH, NULL, BUF_GET, + __FILE__, __LINE__, mtr); + page = buf_block_get_frame(block); + ut_ad(0 == ut_dulint_cmp(index->id, + btr_page_get_index_id(page))); + + block->check_index_page_at_flush = TRUE; + + if (height == ULINT_UNDEFINED) { + /* We are in the root node */ + + height = btr_page_get_level(page, mtr); + root_height = height; + } + + if (height == 0) { + btr_cur_latch_leaves(page, space, zip_size, page_no, + latch_mode, cursor, mtr); + + /* In versions <= 3.23.52 we had forgotten to + release the tree latch here. If in an index scan + we had to scan far to find a record visible to the + current transaction, that could starve others + waiting for the tree latch. */ + + if ((latch_mode != BTR_MODIFY_TREE) + && (latch_mode != BTR_CONT_MODIFY_TREE)) { + + /* Release the tree s-latch */ + + mtr_release_s_latch_at_savepoint( + mtr, savepoint, + dict_index_get_lock(index)); + } + } + + if (from_left) { + page_cur_set_before_first(block, page_cursor); + } else { + page_cur_set_after_last(block, page_cursor); + } + + if (height == 0) { + if (estimate) { + btr_cur_add_path_info(cursor, height, + root_height); + } + + break; + } + + ut_ad(height > 0); + + if (from_left) { + page_cur_move_to_next(page_cursor); + } else { + page_cur_move_to_prev(page_cursor); + } + + if (estimate) { + btr_cur_add_path_info(cursor, height, root_height); + } + + height--; + + node_ptr = page_cur_get_rec(page_cursor); + offsets = rec_get_offsets(node_ptr, cursor->index, offsets, + ULINT_UNDEFINED, &heap); + /* Go to the child node */ + page_no = btr_node_ptr_get_child_page_no(node_ptr, offsets); + } + + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } +} + +/************************************************************************** +Positions a cursor at a randomly chosen position within a B-tree. */ +UNIV_INTERN +void +btr_cur_open_at_rnd_pos( +/*====================*/ + dict_index_t* index, /* in: index */ + ulint latch_mode, /* in: BTR_SEARCH_LEAF, ... */ + btr_cur_t* cursor, /* in/out: B-tree cursor */ + mtr_t* mtr) /* in: mtr */ +{ + page_cur_t* page_cursor; + ulint page_no; + ulint space; + ulint zip_size; + ulint height; + rec_t* node_ptr; + mem_heap_t* heap = NULL; + ulint offsets_[REC_OFFS_NORMAL_SIZE]; + ulint* offsets = offsets_; + rec_offs_init(offsets_); + + if (latch_mode == BTR_MODIFY_TREE) { + mtr_x_lock(dict_index_get_lock(index), mtr); + } else { + mtr_s_lock(dict_index_get_lock(index), mtr); + } + + page_cursor = btr_cur_get_page_cur(cursor); + cursor->index = index; + + space = dict_index_get_space(index); + zip_size = dict_table_zip_size(index->table); + page_no = dict_index_get_page(index); + + height = ULINT_UNDEFINED; + + for (;;) { + buf_block_t* block; + page_t* page; + + block = buf_page_get_gen(space, zip_size, page_no, + RW_NO_LATCH, NULL, BUF_GET, + __FILE__, __LINE__, mtr); + page = buf_block_get_frame(block); + ut_ad(0 == ut_dulint_cmp(index->id, + btr_page_get_index_id(page))); + + if (height == ULINT_UNDEFINED) { + /* We are in the root node */ + + height = btr_page_get_level(page, mtr); + } + + if (height == 0) { + btr_cur_latch_leaves(page, space, zip_size, page_no, + latch_mode, cursor, mtr); + } + + page_cur_open_on_rnd_user_rec(block, page_cursor); + + if (height == 0) { + + break; + } + + ut_ad(height > 0); + + height--; + + node_ptr = page_cur_get_rec(page_cursor); + offsets = rec_get_offsets(node_ptr, cursor->index, offsets, + ULINT_UNDEFINED, &heap); + /* Go to the child node */ + page_no = btr_node_ptr_get_child_page_no(node_ptr, offsets); + } + + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } +} + +/*==================== B-TREE INSERT =========================*/ + +/***************************************************************** +Inserts a record if there is enough space, or if enough space can +be freed by reorganizing. Differs from btr_cur_optimistic_insert because +no heuristics is applied to whether it pays to use CPU time for +reorganizing the page or not. */ +static +rec_t* +btr_cur_insert_if_possible( +/*=======================*/ + /* out: pointer to inserted record if succeed, + else NULL */ + btr_cur_t* cursor, /* in: cursor on page after which to insert; + cursor stays valid */ + const dtuple_t* tuple, /* in: tuple to insert; the size info need not + have been stored to tuple */ + ulint n_ext, /* in: number of externally stored columns */ + mtr_t* mtr) /* in: mtr */ +{ + page_cur_t* page_cursor; + buf_block_t* block; + rec_t* rec; + + ut_ad(dtuple_check_typed(tuple)); + + block = btr_cur_get_block(cursor); + + ut_ad(mtr_memo_contains(mtr, block, MTR_MEMO_PAGE_X_FIX)); + page_cursor = btr_cur_get_page_cur(cursor); + + /* Now, try the insert */ + rec = page_cur_tuple_insert(page_cursor, tuple, + cursor->index, n_ext, mtr); + + if (UNIV_UNLIKELY(!rec)) { + /* If record did not fit, reorganize */ + + if (btr_page_reorganize(block, cursor->index, mtr)) { + + page_cur_search(block, cursor->index, tuple, + PAGE_CUR_LE, page_cursor); + + rec = page_cur_tuple_insert(page_cursor, tuple, + cursor->index, n_ext, mtr); + } + } + + return(rec); +} + +/***************************************************************** +For an insert, checks the locks and does the undo logging if desired. */ +UNIV_INLINE +ulint +btr_cur_ins_lock_and_undo( +/*======================*/ + /* out: DB_SUCCESS, DB_WAIT_LOCK, + DB_FAIL, or error number */ + ulint flags, /* in: undo logging and locking flags: if + not zero, the parameters index and thr + should be specified */ + btr_cur_t* cursor, /* in: cursor on page after which to insert */ + const dtuple_t* entry, /* in: entry to insert */ + que_thr_t* thr, /* in: query thread or NULL */ + ibool* inherit)/* out: TRUE if the inserted new record maybe + should inherit LOCK_GAP type locks from the + successor record */ +{ + dict_index_t* index; + ulint err; + rec_t* rec; + dulint roll_ptr; + + /* Check if we have to wait for a lock: enqueue an explicit lock + request if yes */ + + rec = btr_cur_get_rec(cursor); + index = cursor->index; + + err = lock_rec_insert_check_and_lock(flags, rec, + btr_cur_get_block(cursor), + index, thr, inherit); + + if (err != DB_SUCCESS) { + + return(err); + } + + if (dict_index_is_clust(index) && !dict_index_is_ibuf(index)) { + + err = trx_undo_report_row_operation(flags, TRX_UNDO_INSERT_OP, + thr, index, entry, + NULL, 0, NULL, + &roll_ptr); + if (err != DB_SUCCESS) { + + return(err); + } + + /* Now we can fill in the roll ptr field in entry */ + + if (!(flags & BTR_KEEP_SYS_FLAG)) { + + row_upd_index_entry_sys_field(entry, index, + DATA_ROLL_PTR, roll_ptr); + } + } + + return(DB_SUCCESS); +} + +#ifdef UNIV_DEBUG +/***************************************************************** +Report information about a transaction. */ +static +void +btr_cur_trx_report( +/*===============*/ + trx_t* trx, /* in: transaction */ + const dict_index_t* index, /* in: index */ + const char* op) /* in: operation */ +{ + fprintf(stderr, "Trx with id " TRX_ID_FMT " going to ", + TRX_ID_PREP_PRINTF(trx->id)); + fputs(op, stderr); + dict_index_name_print(stderr, trx, index); + putc('\n', stderr); +} +#endif /* UNIV_DEBUG */ + +/***************************************************************** +Tries to perform an insert to a page in an index tree, next to cursor. +It is assumed that mtr holds an x-latch on the page. The operation does +not succeed if there is too little space on the page. If there is just +one record on the page, the insert will always succeed; this is to +prevent trying to split a page with just one record. */ +UNIV_INTERN +ulint +btr_cur_optimistic_insert( +/*======================*/ + /* out: DB_SUCCESS, DB_WAIT_LOCK, + DB_FAIL, or error number */ + ulint flags, /* in: undo logging and locking flags: if not + zero, the parameters index and thr should be + specified */ + btr_cur_t* cursor, /* in: cursor on page after which to insert; + cursor stays valid */ + dtuple_t* entry, /* in/out: entry to insert */ + rec_t** rec, /* out: pointer to inserted record if + succeed */ + big_rec_t** big_rec,/* out: big rec vector whose fields have to + be stored externally by the caller, or + NULL */ + ulint n_ext, /* in: number of externally stored columns */ + que_thr_t* thr, /* in: query thread or NULL */ + mtr_t* mtr) /* in: mtr; if this function returns + DB_SUCCESS on a leaf page of a secondary + index in a compressed tablespace, the + mtr must be committed before latching + any further pages */ +{ + big_rec_t* big_rec_vec = NULL; + dict_index_t* index; + page_cur_t* page_cursor; + buf_block_t* block; + page_t* page; + ulint max_size; + rec_t* dummy_rec; + ibool leaf; + ibool reorg; + ibool inherit; + ulint zip_size; + ulint rec_size; + mem_heap_t* heap = NULL; + ulint err; + + *big_rec = NULL; + + block = btr_cur_get_block(cursor); + page = buf_block_get_frame(block); + index = cursor->index; + zip_size = buf_block_get_zip_size(block); +#ifdef UNIV_DEBUG_VALGRIND + if (zip_size) { + UNIV_MEM_ASSERT_RW(page, UNIV_PAGE_SIZE); + UNIV_MEM_ASSERT_RW(block->page.zip.data, zip_size); + } +#endif /* UNIV_DEBUG_VALGRIND */ + + if (!dtuple_check_typed_no_assert(entry)) { + fputs("InnoDB: Error in a tuple to insert into ", stderr); + dict_index_name_print(stderr, thr_get_trx(thr), index); + } +#ifdef UNIV_DEBUG + if (btr_cur_print_record_ops && thr) { + btr_cur_trx_report(thr_get_trx(thr), index, "insert into "); + dtuple_print(stderr, entry); + } +#endif /* UNIV_DEBUG */ + + ut_ad(mtr_memo_contains(mtr, block, MTR_MEMO_PAGE_X_FIX)); + max_size = page_get_max_insert_size_after_reorganize(page, 1); + leaf = page_is_leaf(page); + + /* Calculate the record size when entry is converted to a record */ + rec_size = rec_get_converted_size(index, entry, n_ext); + + if (page_zip_rec_needs_ext(rec_size, page_is_comp(page), + dtuple_get_n_fields(entry), zip_size)) { + + /* The record is so big that we have to store some fields + externally on separate database pages */ + big_rec_vec = dtuple_convert_big_rec(index, entry, &n_ext); + + if (UNIV_UNLIKELY(big_rec_vec == NULL)) { + + return(DB_TOO_BIG_RECORD); + } + + rec_size = rec_get_converted_size(index, entry, n_ext); + } + + if (UNIV_UNLIKELY(zip_size)) { + /* Estimate the free space of an empty compressed page. + Subtract one byte for the encoded heap_no in the + modification log. */ + ulint free_space_zip = page_zip_empty_size( + cursor->index->n_fields, zip_size) - 1; + ulint n_uniq = dict_index_get_n_unique_in_tree(index); + + ut_ad(dict_table_is_comp(index->table)); + + /* There should be enough room for two node pointer + records on an empty non-leaf page. This prevents + infinite page splits. */ + + if (UNIV_LIKELY(entry->n_fields >= n_uniq) + && UNIV_UNLIKELY(REC_NODE_PTR_SIZE + + rec_get_converted_size_comp_prefix( + index, entry->fields, n_uniq, + NULL) + /* On a compressed page, there is + a two-byte entry in the dense + page directory for every record. + But there is no record header. */ + - (REC_N_NEW_EXTRA_BYTES - 2) + > free_space_zip / 2)) { + + if (big_rec_vec) { + dtuple_convert_back_big_rec( + index, entry, big_rec_vec); + } + + if (heap) { + mem_heap_free(heap); + } + + return(DB_TOO_BIG_RECORD); + } + } + + /* If there have been many consecutive inserts, and we are on the leaf + level, check if we have to split the page to reserve enough free space + for future updates of records. */ + + if (dict_index_is_clust(index) + && (page_get_n_recs(page) >= 2) + && UNIV_LIKELY(leaf) + && (dict_index_get_space_reserve() + rec_size > max_size) + && (btr_page_get_split_rec_to_right(cursor, &dummy_rec) + || btr_page_get_split_rec_to_left(cursor, &dummy_rec))) { +fail: + err = DB_FAIL; +fail_err: + + if (big_rec_vec) { + dtuple_convert_back_big_rec(index, entry, big_rec_vec); + } + + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } + + return(err); + } + + if (UNIV_UNLIKELY(max_size < BTR_CUR_PAGE_REORGANIZE_LIMIT + || max_size < rec_size) + && UNIV_LIKELY(page_get_n_recs(page) > 1) + && page_get_max_insert_size(page, 1) < rec_size) { + + goto fail; + } + + /* Check locks and write to the undo log, if specified */ + err = btr_cur_ins_lock_and_undo(flags, cursor, entry, thr, &inherit); + + if (UNIV_UNLIKELY(err != DB_SUCCESS)) { + + goto fail_err; + } + + page_cursor = btr_cur_get_page_cur(cursor); + + /* Now, try the insert */ + + { + const rec_t* page_cursor_rec = page_cur_get_rec(page_cursor); + *rec = page_cur_tuple_insert(page_cursor, entry, index, + n_ext, mtr); + reorg = page_cursor_rec != page_cur_get_rec(page_cursor); + + if (UNIV_UNLIKELY(reorg)) { + ut_a(zip_size); + ut_a(*rec); + } + } + + if (UNIV_UNLIKELY(!*rec) && UNIV_LIKELY(!reorg)) { + /* If the record did not fit, reorganize */ + if (UNIV_UNLIKELY(!btr_page_reorganize(block, index, mtr))) { + ut_a(zip_size); + + goto fail; + } + + ut_ad(zip_size + || page_get_max_insert_size(page, 1) == max_size); + + reorg = TRUE; + + page_cur_search(block, index, entry, PAGE_CUR_LE, page_cursor); + + *rec = page_cur_tuple_insert(page_cursor, entry, index, + n_ext, mtr); + + if (UNIV_UNLIKELY(!*rec)) { + if (UNIV_LIKELY(zip_size != 0)) { + + goto fail; + } + + fputs("InnoDB: Error: cannot insert tuple ", stderr); + dtuple_print(stderr, entry); + fputs(" into ", stderr); + dict_index_name_print(stderr, thr_get_trx(thr), index); + fprintf(stderr, "\nInnoDB: max insert size %lu\n", + (ulong) max_size); + ut_error; + } + } + + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } + +#ifdef BTR_CUR_HASH_ADAPT + if (!reorg && leaf && (cursor->flag == BTR_CUR_HASH)) { + btr_search_update_hash_node_on_insert(cursor); + } else { + btr_search_update_hash_on_insert(cursor); + } +#endif + + if (!(flags & BTR_NO_LOCKING_FLAG) && inherit) { + + lock_update_insert(block, *rec); + } + +#if 0 + fprintf(stderr, "Insert into page %lu, max ins size %lu," + " rec %lu ind type %lu\n", + buf_block_get_page_no(block), max_size, + rec_size + PAGE_DIR_SLOT_SIZE, index->type); +#endif + if (leaf + && !dict_index_is_clust(index) + && !dict_index_is_ibuf(index)) { + /* Update the free bits of the B-tree page in the + insert buffer bitmap. */ + + /* The free bits in the insert buffer bitmap must + never exceed the free space on a page. It is safe to + decrement or reset the bits in the bitmap in a + mini-transaction that is committed before the + mini-transaction that affects the free space. */ + + /* It is unsafe to increment the bits in a separately + committed mini-transaction, because in crash recovery, + the free bits could momentarily be set too high. */ + + if (zip_size) { + /* Update the bits in the same mini-transaction. */ + ibuf_update_free_bits_zip(block, mtr); + } else { + /* Decrement the bits in a separate + mini-transaction. */ + ibuf_update_free_bits_if_full( + block, max_size, + rec_size + PAGE_DIR_SLOT_SIZE); + } + } + + *big_rec = big_rec_vec; + + return(DB_SUCCESS); +} + +/***************************************************************** +Performs an insert on a page of an index tree. It is assumed that mtr +holds an x-latch on the tree and on the cursor page. If the insert is +made on the leaf level, to avoid deadlocks, mtr must also own x-latches +to brothers of page, if those brothers exist. */ +UNIV_INTERN +ulint +btr_cur_pessimistic_insert( +/*=======================*/ + /* out: DB_SUCCESS or error number */ + ulint flags, /* in: undo logging and locking flags: if not + zero, the parameter thr should be + specified; if no undo logging is specified, + then the caller must have reserved enough + free extents in the file space so that the + insertion will certainly succeed */ + btr_cur_t* cursor, /* in: cursor after which to insert; + cursor stays valid */ + dtuple_t* entry, /* in/out: entry to insert */ + rec_t** rec, /* out: pointer to inserted record if + succeed */ + big_rec_t** big_rec,/* out: big rec vector whose fields have to + be stored externally by the caller, or + NULL */ + ulint n_ext, /* in: number of externally stored columns */ + que_thr_t* thr, /* in: query thread or NULL */ + mtr_t* mtr) /* in: mtr */ +{ + dict_index_t* index = cursor->index; + ulint zip_size = dict_table_zip_size(index->table); + big_rec_t* big_rec_vec = NULL; + mem_heap_t* heap = NULL; + ulint err; + ibool dummy_inh; + ibool success; + ulint n_extents = 0; + ulint n_reserved; + + ut_ad(dtuple_check_typed(entry)); + + *big_rec = NULL; + + ut_ad(mtr_memo_contains(mtr, + dict_index_get_lock(btr_cur_get_index(cursor)), + MTR_MEMO_X_LOCK)); + ut_ad(mtr_memo_contains(mtr, btr_cur_get_block(cursor), + MTR_MEMO_PAGE_X_FIX)); + + /* Try first an optimistic insert; reset the cursor flag: we do not + assume anything of how it was positioned */ + + cursor->flag = BTR_CUR_BINARY; + + err = btr_cur_optimistic_insert(flags, cursor, entry, rec, + big_rec, n_ext, thr, mtr); + if (err != DB_FAIL) { + + return(err); + } + + /* Retry with a pessimistic insert. Check locks and write to undo log, + if specified */ + + err = btr_cur_ins_lock_and_undo(flags, cursor, entry, thr, &dummy_inh); + + if (err != DB_SUCCESS) { + + return(err); + } + + if (!(flags & BTR_NO_UNDO_LOG_FLAG)) { + /* First reserve enough free space for the file segments + of the index tree, so that the insert will not fail because + of lack of space */ + + n_extents = cursor->tree_height / 16 + 3; + + success = fsp_reserve_free_extents(&n_reserved, index->space, + n_extents, FSP_NORMAL, mtr); + if (!success) { + return(DB_OUT_OF_FILE_SPACE); + } + } + + if (page_zip_rec_needs_ext(rec_get_converted_size(index, entry, n_ext), + dict_table_is_comp(index->table), + dict_index_get_n_fields(index), + zip_size)) { + /* The record is so big that we have to store some fields + externally on separate database pages */ + + if (UNIV_LIKELY_NULL(big_rec_vec)) { + /* This should never happen, but we handle + the situation in a robust manner. */ + ut_ad(0); + dtuple_convert_back_big_rec(index, entry, big_rec_vec); + } + + big_rec_vec = dtuple_convert_big_rec(index, entry, &n_ext); + + if (big_rec_vec == NULL) { + + if (n_extents > 0) { + fil_space_release_free_extents(index->space, + n_reserved); + } + return(DB_TOO_BIG_RECORD); + } + } + + if (dict_index_get_page(index) + == buf_block_get_page_no(btr_cur_get_block(cursor))) { + + /* The page is the root page */ + *rec = btr_root_raise_and_insert(cursor, entry, n_ext, mtr); + } else { + *rec = btr_page_split_and_insert(cursor, entry, n_ext, mtr); + } + + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } + + ut_ad(page_rec_get_next(btr_cur_get_rec(cursor)) == *rec); + +#ifdef BTR_CUR_ADAPT + btr_search_update_hash_on_insert(cursor); +#endif + if (!(flags & BTR_NO_LOCKING_FLAG)) { + + lock_update_insert(btr_cur_get_block(cursor), *rec); + } + + if (n_extents > 0) { + fil_space_release_free_extents(index->space, n_reserved); + } + + *big_rec = big_rec_vec; + + return(DB_SUCCESS); +} + +/*==================== B-TREE UPDATE =========================*/ + +/***************************************************************** +For an update, checks the locks and does the undo logging. */ +UNIV_INLINE +ulint +btr_cur_upd_lock_and_undo( +/*======================*/ + /* out: DB_SUCCESS, DB_WAIT_LOCK, or error + number */ + ulint flags, /* in: undo logging and locking flags */ + btr_cur_t* cursor, /* in: cursor on record to update */ + const upd_t* update, /* in: update vector */ + ulint cmpl_info,/* in: compiler info on secondary index + updates */ + que_thr_t* thr, /* in: query thread */ + dulint* roll_ptr)/* out: roll pointer */ +{ + dict_index_t* index; + rec_t* rec; + ulint err; + + ut_ad(cursor && update && thr && roll_ptr); + + rec = btr_cur_get_rec(cursor); + index = cursor->index; + + if (!dict_index_is_clust(index)) { + /* We do undo logging only when we update a clustered index + record */ + return(lock_sec_rec_modify_check_and_lock( + flags, btr_cur_get_block(cursor), rec, + index, thr)); + } + + /* Check if we have to wait for a lock: enqueue an explicit lock + request if yes */ + + err = DB_SUCCESS; + + if (!(flags & BTR_NO_LOCKING_FLAG)) { + mem_heap_t* heap = NULL; + ulint offsets_[REC_OFFS_NORMAL_SIZE]; + rec_offs_init(offsets_); + + err = lock_clust_rec_modify_check_and_lock( + flags, btr_cur_get_block(cursor), rec, index, + rec_get_offsets(rec, index, offsets_, + ULINT_UNDEFINED, &heap), thr); + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } + if (err != DB_SUCCESS) { + + return(err); + } + } + + /* Append the info about the update in the undo log */ + + err = trx_undo_report_row_operation(flags, TRX_UNDO_MODIFY_OP, thr, + index, NULL, update, + cmpl_info, rec, roll_ptr); + return(err); +} + +/*************************************************************** +Writes a redo log record of updating a record in-place. */ +UNIV_INLINE +void +btr_cur_update_in_place_log( +/*========================*/ + ulint flags, /* in: flags */ + rec_t* rec, /* in: record */ + dict_index_t* index, /* in: index where cursor positioned */ + const upd_t* update, /* in: update vector */ + trx_t* trx, /* in: transaction */ + dulint roll_ptr, /* in: roll ptr */ + mtr_t* mtr) /* in: mtr */ +{ + byte* log_ptr; + page_t* page = page_align(rec); + ut_ad(flags < 256); + ut_ad(!!page_is_comp(page) == dict_table_is_comp(index->table)); + + log_ptr = mlog_open_and_write_index(mtr, rec, index, page_is_comp(page) + ? MLOG_COMP_REC_UPDATE_IN_PLACE + : MLOG_REC_UPDATE_IN_PLACE, + 1 + DATA_ROLL_PTR_LEN + 14 + 2 + + MLOG_BUF_MARGIN); + + if (!log_ptr) { + /* Logging in mtr is switched off during crash recovery */ + return; + } + + /* The code below assumes index is a clustered index: change index to + the clustered index if we are updating a secondary index record (or we + could as well skip writing the sys col values to the log in this case + because they are not needed for a secondary index record update) */ + + index = dict_table_get_first_index(index->table); + + mach_write_to_1(log_ptr, flags); + log_ptr++; + + log_ptr = row_upd_write_sys_vals_to_log(index, trx, roll_ptr, log_ptr, + mtr); + mach_write_to_2(log_ptr, page_offset(rec)); + log_ptr += 2; + + row_upd_index_write_log(update, log_ptr, mtr); +} + +/*************************************************************** +Parses a redo log record of updating a record in-place. */ +UNIV_INTERN +byte* +btr_cur_parse_update_in_place( +/*==========================*/ + /* out: end of log record or NULL */ + byte* ptr, /* in: buffer */ + byte* end_ptr,/* in: buffer end */ + page_t* page, /* in/out: page or NULL */ + page_zip_des_t* page_zip,/* in/out: compressed page, or NULL */ + dict_index_t* index) /* in: index corresponding to page */ +{ + ulint flags; + rec_t* rec; + upd_t* update; + ulint pos; + dulint trx_id; + dulint roll_ptr; + ulint rec_offset; + mem_heap_t* heap; + ulint* offsets; + + if (end_ptr < ptr + 1) { + + return(NULL); + } + + flags = mach_read_from_1(ptr); + ptr++; + + ptr = row_upd_parse_sys_vals(ptr, end_ptr, &pos, &trx_id, &roll_ptr); + + if (ptr == NULL) { + + return(NULL); + } + + if (end_ptr < ptr + 2) { + + return(NULL); + } + + rec_offset = mach_read_from_2(ptr); + ptr += 2; + + ut_a(rec_offset <= UNIV_PAGE_SIZE); + + heap = mem_heap_create(256); + + ptr = row_upd_index_parse(ptr, end_ptr, heap, &update); + + if (!ptr || !page) { + + goto func_exit; + } + + ut_a((ibool)!!page_is_comp(page) == dict_table_is_comp(index->table)); + rec = page + rec_offset; + + /* We do not need to reserve btr_search_latch, as the page is only + being recovered, and there cannot be a hash index to it. */ + + offsets = rec_get_offsets(rec, index, NULL, ULINT_UNDEFINED, &heap); + + if (!(flags & BTR_KEEP_SYS_FLAG)) { + row_upd_rec_sys_fields_in_recovery(rec, page_zip, offsets, + pos, trx_id, roll_ptr); + } + + row_upd_rec_in_place(rec, index, offsets, update, page_zip); + +func_exit: + mem_heap_free(heap); + + return(ptr); +} + +/***************************************************************** +See if there is enough place in the page modification log to log +an update-in-place. */ +static +ibool +btr_cur_update_alloc_zip( +/*=====================*/ + /* out: TRUE if enough place */ + page_zip_des_t* page_zip,/* in/out: compressed page */ + buf_block_t* block, /* in/out: buffer page */ + dict_index_t* index, /* in: the index corresponding to the block */ + ulint length, /* in: size needed */ + mtr_t* mtr) /* in: mini-transaction */ +{ + ut_a(page_zip == buf_block_get_page_zip(block)); + ut_ad(page_zip); + ut_ad(!dict_index_is_ibuf(index)); + + if (page_zip_available(page_zip, dict_index_is_clust(index), + length, 0)) { + return(TRUE); + } + + if (!page_zip->m_nonempty) { + /* The page has been freshly compressed, so + recompressing it will not help. */ + return(FALSE); + } + + if (!page_zip_compress(page_zip, buf_block_get_frame(block), + index, mtr)) { + /* Unable to compress the page */ + return(FALSE); + } + + /* After recompressing a page, we must make sure that the free + bits in the insert buffer bitmap will not exceed the free + space on the page. Because this function will not attempt + recompression unless page_zip_available() fails above, it is + safe to reset the free bits if page_zip_available() fails + again, below. The free bits can safely be reset in a separate + mini-transaction. If page_zip_available() succeeds below, we + can be sure that the page_zip_compress() above did not reduce + the free space available on the page. */ + + if (!page_zip_available(page_zip, dict_index_is_clust(index), + length, 0)) { + /* Out of space: reset the free bits. */ + if (!dict_index_is_clust(index) + && page_is_leaf(buf_block_get_frame(block))) { + ibuf_reset_free_bits(block); + } + return(FALSE); + } + + return(TRUE); +} + +/***************************************************************** +Updates a record when the update causes no size changes in its fields. +We assume here that the ordering fields of the record do not change. */ +UNIV_INTERN +ulint +btr_cur_update_in_place( +/*====================*/ + /* out: DB_SUCCESS or error number */ + ulint flags, /* in: undo logging and locking flags */ + btr_cur_t* cursor, /* in: cursor on the record to update; + cursor stays valid and positioned on the + same record */ + const upd_t* update, /* in: update vector */ + ulint cmpl_info,/* in: compiler info on secondary index + updates */ + que_thr_t* thr, /* in: query thread */ + mtr_t* mtr) /* in: mtr; must be committed before + latching any further pages */ +{ + dict_index_t* index; + buf_block_t* block; + page_zip_des_t* page_zip; + ulint err; + rec_t* rec; + dulint roll_ptr = ut_dulint_zero; + trx_t* trx; + ulint was_delete_marked; + mem_heap_t* heap = NULL; + ulint offsets_[REC_OFFS_NORMAL_SIZE]; + ulint* offsets = offsets_; + rec_offs_init(offsets_); + + rec = btr_cur_get_rec(cursor); + index = cursor->index; + ut_ad(!!page_rec_is_comp(rec) == dict_table_is_comp(index->table)); + /* The insert buffer tree should never be updated in place. */ + ut_ad(!dict_index_is_ibuf(index)); + + trx = thr_get_trx(thr); + offsets = rec_get_offsets(rec, index, offsets, ULINT_UNDEFINED, &heap); +#ifdef UNIV_DEBUG + if (btr_cur_print_record_ops && thr) { + btr_cur_trx_report(trx, index, "update "); + rec_print_new(stderr, rec, offsets); + } +#endif /* UNIV_DEBUG */ + + block = btr_cur_get_block(cursor); + page_zip = buf_block_get_page_zip(block); + + /* Check that enough space is available on the compressed page. */ + if (UNIV_LIKELY_NULL(page_zip) + && !btr_cur_update_alloc_zip(page_zip, block, index, + rec_offs_size(offsets), mtr)) { + return(DB_ZIP_OVERFLOW); + } + + /* Do lock checking and undo logging */ + err = btr_cur_upd_lock_and_undo(flags, cursor, update, cmpl_info, + thr, &roll_ptr); + if (UNIV_UNLIKELY(err != DB_SUCCESS)) { + + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } + return(err); + } + + if (block->is_hashed) { + /* The function row_upd_changes_ord_field_binary works only + if the update vector was built for a clustered index, we must + NOT call it if index is secondary */ + + if (!dict_index_is_clust(index) + || row_upd_changes_ord_field_binary(NULL, index, update)) { + + /* Remove possible hash index pointer to this record */ + btr_search_update_hash_on_delete(cursor); + } + + rw_lock_x_lock(&btr_search_latch); + } + + if (!(flags & BTR_KEEP_SYS_FLAG)) { + row_upd_rec_sys_fields(rec, NULL, + index, offsets, trx, roll_ptr); + } + + was_delete_marked = rec_get_deleted_flag( + rec, page_is_comp(buf_block_get_frame(block))); + + row_upd_rec_in_place(rec, index, offsets, update, page_zip); + + if (block->is_hashed) { + rw_lock_x_unlock(&btr_search_latch); + } + + if (page_zip && !dict_index_is_clust(index) + && page_is_leaf(buf_block_get_frame(block))) { + /* Update the free bits in the insert buffer. */ + ibuf_update_free_bits_zip(block, mtr); + } + + btr_cur_update_in_place_log(flags, rec, index, update, + trx, roll_ptr, mtr); + + if (was_delete_marked + && !rec_get_deleted_flag(rec, page_is_comp( + buf_block_get_frame(block)))) { + /* The new updated record owns its possible externally + stored fields */ + + btr_cur_unmark_extern_fields(page_zip, + rec, index, offsets, mtr); + } + + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } + return(DB_SUCCESS); +} + +/***************************************************************** +Tries to update a record on a page in an index tree. It is assumed that mtr +holds an x-latch on the page. The operation does not succeed if there is too +little space on the page or if the update would result in too empty a page, +so that tree compression is recommended. We assume here that the ordering +fields of the record do not change. */ +UNIV_INTERN +ulint +btr_cur_optimistic_update( +/*======================*/ + /* out: DB_SUCCESS, or DB_OVERFLOW if the + updated record does not fit, DB_UNDERFLOW + if the page would become too empty, or + DB_ZIP_OVERFLOW if there is not enough + space left on the compressed page */ + ulint flags, /* in: undo logging and locking flags */ + btr_cur_t* cursor, /* in: cursor on the record to update; + cursor stays valid and positioned on the + same record */ + const upd_t* update, /* in: update vector; this must also + contain trx id and roll ptr fields */ + ulint cmpl_info,/* in: compiler info on secondary index + updates */ + que_thr_t* thr, /* in: query thread */ + mtr_t* mtr) /* in: mtr; must be committed before + latching any further pages */ +{ + dict_index_t* index; + page_cur_t* page_cursor; + ulint err; + buf_block_t* block; + page_t* page; + page_zip_des_t* page_zip; + rec_t* rec; + rec_t* orig_rec; + ulint max_size; + ulint new_rec_size; + ulint old_rec_size; + dtuple_t* new_entry; + dulint roll_ptr; + trx_t* trx; + mem_heap_t* heap; + ulint i; + ulint n_ext; + ulint* offsets; + + block = btr_cur_get_block(cursor); + page = buf_block_get_frame(block); + orig_rec = rec = btr_cur_get_rec(cursor); + index = cursor->index; + ut_ad(!!page_rec_is_comp(rec) == dict_table_is_comp(index->table)); + ut_ad(mtr_memo_contains(mtr, block, MTR_MEMO_PAGE_X_FIX)); + /* The insert buffer tree should never be updated in place. */ + ut_ad(!dict_index_is_ibuf(index)); + + heap = mem_heap_create(1024); + offsets = rec_get_offsets(rec, index, NULL, ULINT_UNDEFINED, &heap); + +#ifdef UNIV_DEBUG + if (btr_cur_print_record_ops && thr) { + btr_cur_trx_report(thr_get_trx(thr), index, "update "); + rec_print_new(stderr, rec, offsets); + } +#endif /* UNIV_DEBUG */ + + if (!row_upd_changes_field_size_or_external(index, offsets, update)) { + + /* The simplest and the most common case: the update does not + change the size of any field and none of the updated fields is + externally stored in rec or update, and there is enough space + on the compressed page to log the update. */ + + mem_heap_free(heap); + return(btr_cur_update_in_place(flags, cursor, update, + cmpl_info, thr, mtr)); + } + + if (rec_offs_any_extern(offsets)) { +any_extern: + /* Externally stored fields are treated in pessimistic + update */ + + mem_heap_free(heap); + return(DB_OVERFLOW); + } + + for (i = 0; i < upd_get_n_fields(update); i++) { + if (dfield_is_ext(&upd_get_nth_field(update, i)->new_val)) { + + goto any_extern; + } + } + + page_cursor = btr_cur_get_page_cur(cursor); + + new_entry = row_rec_to_index_entry(ROW_COPY_DATA, rec, index, offsets, + &n_ext, heap); + /* We checked above that there are no externally stored fields. */ + ut_a(!n_ext); + + /* The page containing the clustered index record + corresponding to new_entry is latched in mtr. + Thus the following call is safe. */ + row_upd_index_replace_new_col_vals_index_pos(new_entry, index, update, + FALSE, heap); + old_rec_size = rec_offs_size(offsets); + new_rec_size = rec_get_converted_size(index, new_entry, 0); + + page_zip = buf_block_get_page_zip(block); +#ifdef UNIV_ZIP_DEBUG + ut_a(!page_zip || page_zip_validate(page_zip, page)); +#endif /* UNIV_ZIP_DEBUG */ + + if (UNIV_LIKELY_NULL(page_zip) + && !btr_cur_update_alloc_zip(page_zip, block, index, + new_rec_size, mtr)) { + err = DB_ZIP_OVERFLOW; + goto err_exit; + } + + if (UNIV_UNLIKELY(new_rec_size + >= (page_get_free_space_of_empty(page_is_comp(page)) + / 2))) { + + err = DB_OVERFLOW; + goto err_exit; + } + + if (UNIV_UNLIKELY(page_get_data_size(page) + - old_rec_size + new_rec_size + < BTR_CUR_PAGE_COMPRESS_LIMIT)) { + + /* The page would become too empty */ + + err = DB_UNDERFLOW; + goto err_exit; + } + + max_size = old_rec_size + + page_get_max_insert_size_after_reorganize(page, 1); + + if (!(((max_size >= BTR_CUR_PAGE_REORGANIZE_LIMIT) + && (max_size >= new_rec_size)) + || (page_get_n_recs(page) <= 1))) { + + /* There was not enough space, or it did not pay to + reorganize: for simplicity, we decide what to do assuming a + reorganization is needed, though it might not be necessary */ + + err = DB_OVERFLOW; + goto err_exit; + } + + /* Do lock checking and undo logging */ + err = btr_cur_upd_lock_and_undo(flags, cursor, update, cmpl_info, thr, + &roll_ptr); + if (err != DB_SUCCESS) { +err_exit: + mem_heap_free(heap); + return(err); + } + + /* Ok, we may do the replacement. Store on the page infimum the + explicit locks on rec, before deleting rec (see the comment in + btr_cur_pessimistic_update). */ + + lock_rec_store_on_page_infimum(block, rec); + + btr_search_update_hash_on_delete(cursor); + + /* The call to row_rec_to_index_entry(ROW_COPY_DATA, ...) above + invokes rec_offs_make_valid() to point to the copied record that + the fields of new_entry point to. We have to undo it here. */ + ut_ad(rec_offs_validate(NULL, index, offsets)); + rec_offs_make_valid(page_cur_get_rec(page_cursor), index, offsets); + + page_cur_delete_rec(page_cursor, index, offsets, mtr); + + page_cur_move_to_prev(page_cursor); + + trx = thr_get_trx(thr); + + if (!(flags & BTR_KEEP_SYS_FLAG)) { + row_upd_index_entry_sys_field(new_entry, index, DATA_ROLL_PTR, + roll_ptr); + row_upd_index_entry_sys_field(new_entry, index, DATA_TRX_ID, + trx->id); + } + + /* There are no externally stored columns in new_entry */ + rec = btr_cur_insert_if_possible(cursor, new_entry, 0/*n_ext*/, mtr); + ut_a(rec); /* <- We calculated above the insert would fit */ + + if (page_zip && !dict_index_is_clust(index) + && page_is_leaf(page)) { + /* Update the free bits in the insert buffer. */ + ibuf_update_free_bits_zip(block, mtr); + } + + /* Restore the old explicit lock state on the record */ + + lock_rec_restore_from_page_infimum(block, rec, block); + + page_cur_move_to_next(page_cursor); + + mem_heap_free(heap); + + return(DB_SUCCESS); +} + +/***************************************************************** +If, in a split, a new supremum record was created as the predecessor of the +updated record, the supremum record must inherit exactly the locks on the +updated record. In the split it may have inherited locks from the successor +of the updated record, which is not correct. This function restores the +right locks for the new supremum. */ +static +void +btr_cur_pess_upd_restore_supremum( +/*==============================*/ + buf_block_t* block, /* in: buffer block of rec */ + const rec_t* rec, /* in: updated record */ + mtr_t* mtr) /* in: mtr */ +{ + page_t* page; + buf_block_t* prev_block; + ulint space; + ulint zip_size; + ulint prev_page_no; + + page = buf_block_get_frame(block); + + if (page_rec_get_next(page_get_infimum_rec(page)) != rec) { + /* Updated record is not the first user record on its page */ + + return; + } + + space = buf_block_get_space(block); + zip_size = buf_block_get_zip_size(block); + prev_page_no = btr_page_get_prev(page, mtr); + + ut_ad(prev_page_no != FIL_NULL); + prev_block = buf_page_get_with_no_latch(space, zip_size, + prev_page_no, mtr); +#ifdef UNIV_BTR_DEBUG + ut_a(btr_page_get_next(prev_block->frame, mtr) + == page_get_page_no(page)); +#endif /* UNIV_BTR_DEBUG */ + + /* We must already have an x-latch on prev_block! */ + ut_ad(mtr_memo_contains(mtr, prev_block, MTR_MEMO_PAGE_X_FIX)); + + lock_rec_reset_and_inherit_gap_locks(prev_block, block, + PAGE_HEAP_NO_SUPREMUM, + page_rec_get_heap_no(rec)); +} + +/***************************************************************** +Performs an update of a record on a page of a tree. It is assumed +that mtr holds an x-latch on the tree and on the cursor page. If the +update is made on the leaf level, to avoid deadlocks, mtr must also +own x-latches to brothers of page, if those brothers exist. We assume +here that the ordering fields of the record do not change. */ +UNIV_INTERN +ulint +btr_cur_pessimistic_update( +/*=======================*/ + /* out: DB_SUCCESS or error code */ + ulint flags, /* in: undo logging, locking, and rollback + flags */ + btr_cur_t* cursor, /* in: cursor on the record to update */ + mem_heap_t** heap, /* in/out: pointer to memory heap, or NULL */ + big_rec_t** big_rec,/* out: big rec vector whose fields have to + be stored externally by the caller, or NULL */ + const upd_t* update, /* in: update vector; this is allowed also + contain trx id and roll ptr fields, but + the values in update vector have no effect */ + ulint cmpl_info,/* in: compiler info on secondary index + updates */ + que_thr_t* thr, /* in: query thread */ + mtr_t* mtr) /* in: mtr; must be committed before + latching any further pages */ +{ + big_rec_t* big_rec_vec = NULL; + big_rec_t* dummy_big_rec; + dict_index_t* index; + buf_block_t* block; + page_t* page; + page_zip_des_t* page_zip; + rec_t* rec; + page_cur_t* page_cursor; + dtuple_t* new_entry; + ulint err; + ulint optim_err; + dulint roll_ptr; + trx_t* trx; + ibool was_first; + ulint n_extents = 0; + ulint n_reserved; + ulint n_ext; + ulint* offsets = NULL; + + *big_rec = NULL; + + block = btr_cur_get_block(cursor); + page = buf_block_get_frame(block); + page_zip = buf_block_get_page_zip(block); + rec = btr_cur_get_rec(cursor); + index = cursor->index; + + ut_ad(mtr_memo_contains(mtr, dict_index_get_lock(index), + MTR_MEMO_X_LOCK)); + ut_ad(mtr_memo_contains(mtr, block, MTR_MEMO_PAGE_X_FIX)); +#ifdef UNIV_ZIP_DEBUG + ut_a(!page_zip || page_zip_validate(page_zip, page)); +#endif /* UNIV_ZIP_DEBUG */ + /* The insert buffer tree should never be updated in place. */ + ut_ad(!dict_index_is_ibuf(index)); + + optim_err = btr_cur_optimistic_update(flags, cursor, update, + cmpl_info, thr, mtr); + + switch (optim_err) { + case DB_UNDERFLOW: + case DB_OVERFLOW: + case DB_ZIP_OVERFLOW: + break; + default: + return(optim_err); + } + + /* Do lock checking and undo logging */ + err = btr_cur_upd_lock_and_undo(flags, cursor, update, cmpl_info, + thr, &roll_ptr); + if (err != DB_SUCCESS) { + + return(err); + } + + if (optim_err == DB_OVERFLOW) { + ulint reserve_flag; + + /* First reserve enough free space for the file segments + of the index tree, so that the update will not fail because + of lack of space */ + + n_extents = cursor->tree_height / 16 + 3; + + if (flags & BTR_NO_UNDO_LOG_FLAG) { + reserve_flag = FSP_CLEANING; + } else { + reserve_flag = FSP_NORMAL; + } + + if (!fsp_reserve_free_extents(&n_reserved, index->space, + n_extents, reserve_flag, mtr)) { + return(DB_OUT_OF_FILE_SPACE); + } + } + + if (!*heap) { + *heap = mem_heap_create(1024); + } + offsets = rec_get_offsets(rec, index, NULL, ULINT_UNDEFINED, heap); + + trx = thr_get_trx(thr); + + new_entry = row_rec_to_index_entry(ROW_COPY_DATA, rec, index, offsets, + &n_ext, *heap); + /* The call to row_rec_to_index_entry(ROW_COPY_DATA, ...) above + invokes rec_offs_make_valid() to point to the copied record that + the fields of new_entry point to. We have to undo it here. */ + ut_ad(rec_offs_validate(NULL, index, offsets)); + rec_offs_make_valid(rec, index, offsets); + + /* The page containing the clustered index record + corresponding to new_entry is latched in mtr. If the + clustered index record is delete-marked, then its externally + stored fields cannot have been purged yet, because then the + purge would also have removed the clustered index record + itself. Thus the following call is safe. */ + row_upd_index_replace_new_col_vals_index_pos(new_entry, index, update, + FALSE, *heap); + if (!(flags & BTR_KEEP_SYS_FLAG)) { + row_upd_index_entry_sys_field(new_entry, index, DATA_ROLL_PTR, + roll_ptr); + row_upd_index_entry_sys_field(new_entry, index, DATA_TRX_ID, + trx->id); + } + + if ((flags & BTR_NO_UNDO_LOG_FLAG) && rec_offs_any_extern(offsets)) { + /* We are in a transaction rollback undoing a row + update: we must free possible externally stored fields + which got new values in the update, if they are not + inherited values. They can be inherited if we have + updated the primary key to another value, and then + update it back again. */ + + ut_ad(big_rec_vec == NULL); + + btr_rec_free_updated_extern_fields( + index, rec, page_zip, offsets, update, + trx_is_recv(trx) ? RB_RECOVERY : RB_NORMAL, mtr); + } + + /* We have to set appropriate extern storage bits in the new + record to be inserted: we have to remember which fields were such */ + + ut_ad(!page_is_comp(page) || !rec_get_node_ptr_flag(rec)); + offsets = rec_get_offsets(rec, index, offsets, ULINT_UNDEFINED, heap); + n_ext += btr_push_update_extern_fields(new_entry, update, *heap); + + if (UNIV_LIKELY_NULL(page_zip)) { + ut_ad(page_is_comp(page)); + if (page_zip_rec_needs_ext( + rec_get_converted_size(index, new_entry, n_ext), + TRUE, + dict_index_get_n_fields(index), + page_zip_get_size(page_zip))) { + + goto make_external; + } + } else if (page_zip_rec_needs_ext( + rec_get_converted_size(index, new_entry, n_ext), + page_is_comp(page), 0, 0)) { +make_external: + big_rec_vec = dtuple_convert_big_rec(index, new_entry, &n_ext); + if (UNIV_UNLIKELY(big_rec_vec == NULL)) { + + err = DB_TOO_BIG_RECORD; + goto return_after_reservations; + } + } + + /* Store state of explicit locks on rec on the page infimum record, + before deleting rec. The page infimum acts as a dummy carrier of the + locks, taking care also of lock releases, before we can move the locks + back on the actual record. There is a special case: if we are + inserting on the root page and the insert causes a call of + btr_root_raise_and_insert. Therefore we cannot in the lock system + delete the lock structs set on the root page even if the root + page carries just node pointers. */ + + lock_rec_store_on_page_infimum(block, rec); + + btr_search_update_hash_on_delete(cursor); + +#ifdef UNIV_ZIP_DEBUG + ut_a(!page_zip || page_zip_validate(page_zip, page)); +#endif /* UNIV_ZIP_DEBUG */ + page_cursor = btr_cur_get_page_cur(cursor); + + page_cur_delete_rec(page_cursor, index, offsets, mtr); + + page_cur_move_to_prev(page_cursor); + + rec = btr_cur_insert_if_possible(cursor, new_entry, n_ext, mtr); + + if (rec) { + lock_rec_restore_from_page_infimum(btr_cur_get_block(cursor), + rec, block); + + offsets = rec_get_offsets(rec, index, offsets, + ULINT_UNDEFINED, heap); + + if (!rec_get_deleted_flag(rec, rec_offs_comp(offsets))) { + /* The new inserted record owns its possible externally + stored fields */ + btr_cur_unmark_extern_fields(page_zip, + rec, index, offsets, mtr); + } + + btr_cur_compress_if_useful(cursor, mtr); + + if (page_zip && !dict_index_is_clust(index) + && page_is_leaf(page)) { + /* Update the free bits in the insert buffer. */ + ibuf_update_free_bits_zip(block, mtr); + } + + err = DB_SUCCESS; + goto return_after_reservations; + } else { + ut_a(optim_err != DB_UNDERFLOW); + + /* Out of space: reset the free bits. */ + if (!dict_index_is_clust(index) + && page_is_leaf(page)) { + ibuf_reset_free_bits(block); + } + } + + /* Was the record to be updated positioned as the first user + record on its page? */ + was_first = page_cur_is_before_first(page_cursor); + + /* The first parameter means that no lock checking and undo logging + is made in the insert */ + + err = btr_cur_pessimistic_insert(BTR_NO_UNDO_LOG_FLAG + | BTR_NO_LOCKING_FLAG + | BTR_KEEP_SYS_FLAG, + cursor, new_entry, &rec, + &dummy_big_rec, n_ext, NULL, mtr); + ut_a(rec); + ut_a(err == DB_SUCCESS); + ut_a(dummy_big_rec == NULL); + + if (!rec_get_deleted_flag(rec, rec_offs_comp(offsets))) { + /* The new inserted record owns its possible externally + stored fields */ + buf_block_t* rec_block = btr_cur_get_block(cursor); + +#ifdef UNIV_ZIP_DEBUG + ut_a(!page_zip || page_zip_validate(page_zip, page)); + page = buf_block_get_frame(rec_block); +#endif /* UNIV_ZIP_DEBUG */ + page_zip = buf_block_get_page_zip(rec_block); + + offsets = rec_get_offsets(rec, index, offsets, + ULINT_UNDEFINED, heap); + btr_cur_unmark_extern_fields(page_zip, + rec, index, offsets, mtr); + } + + lock_rec_restore_from_page_infimum(btr_cur_get_block(cursor), + rec, block); + + /* If necessary, restore also the correct lock state for a new, + preceding supremum record created in a page split. While the old + record was nonexistent, the supremum might have inherited its locks + from a wrong record. */ + + if (!was_first) { + btr_cur_pess_upd_restore_supremum(btr_cur_get_block(cursor), + rec, mtr); + } + +return_after_reservations: +#ifdef UNIV_ZIP_DEBUG + ut_a(!page_zip || page_zip_validate(page_zip, page)); +#endif /* UNIV_ZIP_DEBUG */ + + if (n_extents > 0) { + fil_space_release_free_extents(index->space, n_reserved); + } + + *big_rec = big_rec_vec; + + return(err); +} + +/*==================== B-TREE DELETE MARK AND UNMARK ===============*/ + +/******************************************************************** +Writes the redo log record for delete marking or unmarking of an index +record. */ +UNIV_INLINE +void +btr_cur_del_mark_set_clust_rec_log( +/*===============================*/ + ulint flags, /* in: flags */ + rec_t* rec, /* in: record */ + dict_index_t* index, /* in: index of the record */ + ibool val, /* in: value to set */ + trx_t* trx, /* in: deleting transaction */ + dulint roll_ptr,/* in: roll ptr to the undo log record */ + mtr_t* mtr) /* in: mtr */ +{ + byte* log_ptr; + ut_ad(flags < 256); + ut_ad(val <= 1); + + ut_ad(!!page_rec_is_comp(rec) == dict_table_is_comp(index->table)); + + log_ptr = mlog_open_and_write_index(mtr, rec, index, + page_rec_is_comp(rec) + ? MLOG_COMP_REC_CLUST_DELETE_MARK + : MLOG_REC_CLUST_DELETE_MARK, + 1 + 1 + DATA_ROLL_PTR_LEN + + 14 + 2); + + if (!log_ptr) { + /* Logging in mtr is switched off during crash recovery */ + return; + } + + mach_write_to_1(log_ptr, flags); + log_ptr++; + mach_write_to_1(log_ptr, val); + log_ptr++; + + log_ptr = row_upd_write_sys_vals_to_log(index, trx, roll_ptr, log_ptr, + mtr); + mach_write_to_2(log_ptr, page_offset(rec)); + log_ptr += 2; + + mlog_close(mtr, log_ptr); +} + +/******************************************************************** +Parses the redo log record for delete marking or unmarking of a clustered +index record. */ +UNIV_INTERN +byte* +btr_cur_parse_del_mark_set_clust_rec( +/*=================================*/ + /* out: end of log record or NULL */ + byte* ptr, /* in: buffer */ + byte* end_ptr,/* in: buffer end */ + page_t* page, /* in/out: page or NULL */ + page_zip_des_t* page_zip,/* in/out: compressed page, or NULL */ + dict_index_t* index) /* in: index corresponding to page */ +{ + ulint flags; + ulint val; + ulint pos; + dulint trx_id; + dulint roll_ptr; + ulint offset; + rec_t* rec; + + ut_ad(!page + || !!page_is_comp(page) == dict_table_is_comp(index->table)); + + if (end_ptr < ptr + 2) { + + return(NULL); + } + + flags = mach_read_from_1(ptr); + ptr++; + val = mach_read_from_1(ptr); + ptr++; + + ptr = row_upd_parse_sys_vals(ptr, end_ptr, &pos, &trx_id, &roll_ptr); + + if (ptr == NULL) { + + return(NULL); + } + + if (end_ptr < ptr + 2) { + + return(NULL); + } + + offset = mach_read_from_2(ptr); + ptr += 2; + + ut_a(offset <= UNIV_PAGE_SIZE); + + if (page) { + rec = page + offset; + + /* We do not need to reserve btr_search_latch, as the page + is only being recovered, and there cannot be a hash index to + it. */ + + btr_rec_set_deleted_flag(rec, page_zip, val); + + if (!(flags & BTR_KEEP_SYS_FLAG)) { + mem_heap_t* heap = NULL; + ulint offsets_[REC_OFFS_NORMAL_SIZE]; + rec_offs_init(offsets_); + + row_upd_rec_sys_fields_in_recovery( + rec, page_zip, + rec_get_offsets(rec, index, offsets_, + ULINT_UNDEFINED, &heap), + pos, trx_id, roll_ptr); + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } + } + } + + return(ptr); +} + +/*************************************************************** +Marks a clustered index record deleted. Writes an undo log record to +undo log on this delete marking. Writes in the trx id field the id +of the deleting transaction, and in the roll ptr field pointer to the +undo log record created. */ +UNIV_INTERN +ulint +btr_cur_del_mark_set_clust_rec( +/*===========================*/ + /* out: DB_SUCCESS, DB_LOCK_WAIT, or error + number */ + ulint flags, /* in: undo logging and locking flags */ + btr_cur_t* cursor, /* in: cursor */ + ibool val, /* in: value to set */ + que_thr_t* thr, /* in: query thread */ + mtr_t* mtr) /* in: mtr */ +{ + dict_index_t* index; + buf_block_t* block; + dulint roll_ptr; + ulint err; + rec_t* rec; + page_zip_des_t* page_zip; + trx_t* trx; + mem_heap_t* heap = NULL; + ulint offsets_[REC_OFFS_NORMAL_SIZE]; + ulint* offsets = offsets_; + rec_offs_init(offsets_); + + rec = btr_cur_get_rec(cursor); + index = cursor->index; + ut_ad(!!page_rec_is_comp(rec) == dict_table_is_comp(index->table)); + offsets = rec_get_offsets(rec, index, offsets, ULINT_UNDEFINED, &heap); + +#ifdef UNIV_DEBUG + if (btr_cur_print_record_ops && thr) { + btr_cur_trx_report(thr_get_trx(thr), index, "del mark "); + rec_print_new(stderr, rec, offsets); + } +#endif /* UNIV_DEBUG */ + + ut_ad(dict_index_is_clust(index)); + ut_ad(!rec_get_deleted_flag(rec, rec_offs_comp(offsets))); + + err = lock_clust_rec_modify_check_and_lock(flags, + btr_cur_get_block(cursor), + rec, index, offsets, thr); + + if (err != DB_SUCCESS) { + + goto func_exit; + } + + err = trx_undo_report_row_operation(flags, TRX_UNDO_MODIFY_OP, thr, + index, NULL, NULL, 0, rec, + &roll_ptr); + if (err != DB_SUCCESS) { + + goto func_exit; + } + + block = btr_cur_get_block(cursor); + + if (block->is_hashed) { + rw_lock_x_lock(&btr_search_latch); + } + + page_zip = buf_block_get_page_zip(block); + + btr_rec_set_deleted_flag(rec, page_zip, val); + + trx = thr_get_trx(thr); + + if (!(flags & BTR_KEEP_SYS_FLAG)) { + row_upd_rec_sys_fields(rec, page_zip, + index, offsets, trx, roll_ptr); + } + + if (block->is_hashed) { + rw_lock_x_unlock(&btr_search_latch); + } + + btr_cur_del_mark_set_clust_rec_log(flags, rec, index, val, trx, + roll_ptr, mtr); + +func_exit: + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } + return(err); +} + +/******************************************************************** +Writes the redo log record for a delete mark setting of a secondary +index record. */ +UNIV_INLINE +void +btr_cur_del_mark_set_sec_rec_log( +/*=============================*/ + rec_t* rec, /* in: record */ + ibool val, /* in: value to set */ + mtr_t* mtr) /* in: mtr */ +{ + byte* log_ptr; + ut_ad(val <= 1); + + log_ptr = mlog_open(mtr, 11 + 1 + 2); + + if (!log_ptr) { + /* Logging in mtr is switched off during crash recovery: + in that case mlog_open returns NULL */ + return; + } + + log_ptr = mlog_write_initial_log_record_fast( + rec, MLOG_REC_SEC_DELETE_MARK, log_ptr, mtr); + mach_write_to_1(log_ptr, val); + log_ptr++; + + mach_write_to_2(log_ptr, page_offset(rec)); + log_ptr += 2; + + mlog_close(mtr, log_ptr); +} + +/******************************************************************** +Parses the redo log record for delete marking or unmarking of a secondary +index record. */ +UNIV_INTERN +byte* +btr_cur_parse_del_mark_set_sec_rec( +/*===============================*/ + /* out: end of log record or NULL */ + byte* ptr, /* in: buffer */ + byte* end_ptr,/* in: buffer end */ + page_t* page, /* in/out: page or NULL */ + page_zip_des_t* page_zip)/* in/out: compressed page, or NULL */ +{ + ulint val; + ulint offset; + rec_t* rec; + + if (end_ptr < ptr + 3) { + + return(NULL); + } + + val = mach_read_from_1(ptr); + ptr++; + + offset = mach_read_from_2(ptr); + ptr += 2; + + ut_a(offset <= UNIV_PAGE_SIZE); + + if (page) { + rec = page + offset; + + /* We do not need to reserve btr_search_latch, as the page + is only being recovered, and there cannot be a hash index to + it. */ + + btr_rec_set_deleted_flag(rec, page_zip, val); + } + + return(ptr); +} + +/*************************************************************** +Sets a secondary index record delete mark to TRUE or FALSE. */ +UNIV_INTERN +ulint +btr_cur_del_mark_set_sec_rec( +/*=========================*/ + /* out: DB_SUCCESS, DB_LOCK_WAIT, or error + number */ + ulint flags, /* in: locking flag */ + btr_cur_t* cursor, /* in: cursor */ + ibool val, /* in: value to set */ + que_thr_t* thr, /* in: query thread */ + mtr_t* mtr) /* in: mtr */ +{ + buf_block_t* block; + rec_t* rec; + ulint err; + + block = btr_cur_get_block(cursor); + rec = btr_cur_get_rec(cursor); + +#ifdef UNIV_DEBUG + if (btr_cur_print_record_ops && thr) { + btr_cur_trx_report(thr_get_trx(thr), cursor->index, + "del mark "); + rec_print(stderr, rec, cursor->index); + } +#endif /* UNIV_DEBUG */ + + err = lock_sec_rec_modify_check_and_lock(flags, + btr_cur_get_block(cursor), + rec, cursor->index, thr); + if (err != DB_SUCCESS) { + + return(err); + } + + ut_ad(!!page_rec_is_comp(rec) + == dict_table_is_comp(cursor->index->table)); + + if (block->is_hashed) { + rw_lock_x_lock(&btr_search_latch); + } + + btr_rec_set_deleted_flag(rec, buf_block_get_page_zip(block), val); + + if (block->is_hashed) { + rw_lock_x_unlock(&btr_search_latch); + } + + btr_cur_del_mark_set_sec_rec_log(rec, val, mtr); + + return(DB_SUCCESS); +} + +/*************************************************************** +Clear a secondary index record's delete mark. This function is only +used by the insert buffer insert merge mechanism. */ +UNIV_INTERN +void +btr_cur_del_unmark_for_ibuf( +/*========================*/ + rec_t* rec, /* in/out: record to delete unmark */ + page_zip_des_t* page_zip, /* in/out: compressed page + corresponding to rec, or NULL + when the tablespace is + uncompressed */ + mtr_t* mtr) /* in: mtr */ +{ + /* We do not need to reserve btr_search_latch, as the page has just + been read to the buffer pool and there cannot be a hash index to it. */ + + btr_rec_set_deleted_flag(rec, page_zip, FALSE); + + btr_cur_del_mark_set_sec_rec_log(rec, FALSE, mtr); +} + +/*==================== B-TREE RECORD REMOVE =========================*/ + +/***************************************************************** +Tries to compress a page of the tree if it seems useful. It is assumed +that mtr holds an x-latch on the tree and on the cursor page. To avoid +deadlocks, mtr must also own x-latches to brothers of page, if those +brothers exist. NOTE: it is assumed that the caller has reserved enough +free extents so that the compression will always succeed if done! */ +UNIV_INTERN +ibool +btr_cur_compress_if_useful( +/*=======================*/ + /* out: TRUE if compression occurred */ + btr_cur_t* cursor, /* in: cursor on the page to compress; + cursor does not stay valid if compression + occurs */ + mtr_t* mtr) /* in: mtr */ +{ + ut_ad(mtr_memo_contains(mtr, + dict_index_get_lock(btr_cur_get_index(cursor)), + MTR_MEMO_X_LOCK)); + ut_ad(mtr_memo_contains(mtr, btr_cur_get_block(cursor), + MTR_MEMO_PAGE_X_FIX)); + + return(btr_cur_compress_recommendation(cursor, mtr) + && btr_compress(cursor, mtr)); +} + +/*********************************************************** +Removes the record on which the tree cursor is positioned on a leaf page. +It is assumed that the mtr has an x-latch on the page where the cursor is +positioned, but no latch on the whole tree. */ +UNIV_INTERN +ibool +btr_cur_optimistic_delete( +/*======================*/ + /* out: TRUE if success, i.e., the page + did not become too empty */ + btr_cur_t* cursor, /* in: cursor on leaf page, on the record to + delete; cursor stays valid: if deletion + succeeds, on function exit it points to the + successor of the deleted record */ + mtr_t* mtr) /* in: mtr; if this function returns + TRUE on a leaf page of a secondary + index, the mtr must be committed + before latching any further pages */ +{ + buf_block_t* block; + rec_t* rec; + mem_heap_t* heap = NULL; + ulint offsets_[REC_OFFS_NORMAL_SIZE]; + ulint* offsets = offsets_; + ibool no_compress_needed; + rec_offs_init(offsets_); + + ut_ad(mtr_memo_contains(mtr, btr_cur_get_block(cursor), + MTR_MEMO_PAGE_X_FIX)); + /* This is intended only for leaf page deletions */ + + block = btr_cur_get_block(cursor); + + ut_ad(page_is_leaf(buf_block_get_frame(block))); + + rec = btr_cur_get_rec(cursor); + offsets = rec_get_offsets(rec, cursor->index, offsets, + ULINT_UNDEFINED, &heap); + + no_compress_needed = !rec_offs_any_extern(offsets) + && btr_cur_can_delete_without_compress( + cursor, rec_offs_size(offsets), mtr); + + if (no_compress_needed) { + + page_t* page = buf_block_get_frame(block); + page_zip_des_t* page_zip= buf_block_get_page_zip(block); + ulint max_ins = 0; + + lock_update_delete(block, rec); + + btr_search_update_hash_on_delete(cursor); + + if (!page_zip) { + max_ins = page_get_max_insert_size_after_reorganize( + page, 1); + } +#ifdef UNIV_ZIP_DEBUG + ut_a(!page_zip || page_zip_validate(page_zip, page)); +#endif /* UNIV_ZIP_DEBUG */ + page_cur_delete_rec(btr_cur_get_page_cur(cursor), + cursor->index, offsets, mtr); +#ifdef UNIV_ZIP_DEBUG + ut_a(!page_zip || page_zip_validate(page_zip, page)); +#endif /* UNIV_ZIP_DEBUG */ + + if (dict_index_is_clust(cursor->index) + || dict_index_is_ibuf(cursor->index) + || !page_is_leaf(page)) { + /* The insert buffer does not handle + inserts to clustered indexes, to + non-leaf pages of secondary index B-trees, + or to the insert buffer. */ + } else if (page_zip) { + ibuf_update_free_bits_zip(block, mtr); + } else { + ibuf_update_free_bits_low(block, max_ins, mtr); + } + } + + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } + + return(no_compress_needed); +} + +/***************************************************************** +Removes the record on which the tree cursor is positioned. Tries +to compress the page if its fillfactor drops below a threshold +or if it is the only page on the level. It is assumed that mtr holds +an x-latch on the tree and on the cursor page. To avoid deadlocks, +mtr must also own x-latches to brothers of page, if those brothers +exist. */ +UNIV_INTERN +ibool +btr_cur_pessimistic_delete( +/*=======================*/ + /* out: TRUE if compression occurred */ + ulint* err, /* out: DB_SUCCESS or DB_OUT_OF_FILE_SPACE; + the latter may occur because we may have + to update node pointers on upper levels, + and in the case of variable length keys + these may actually grow in size */ + ibool has_reserved_extents, /* in: TRUE if the + caller has already reserved enough free + extents so that he knows that the operation + will succeed */ + btr_cur_t* cursor, /* in: cursor on the record to delete; + if compression does not occur, the cursor + stays valid: it points to successor of + deleted record on function exit */ + enum trx_rb_ctx rb_ctx, /* in: rollback context */ + mtr_t* mtr) /* in: mtr */ +{ + buf_block_t* block; + page_t* page; + page_zip_des_t* page_zip; + dict_index_t* index; + rec_t* rec; + dtuple_t* node_ptr; + ulint n_extents = 0; + ulint n_reserved; + ibool success; + ibool ret = FALSE; + ulint level; + mem_heap_t* heap; + ulint* offsets; + + block = btr_cur_get_block(cursor); + page = buf_block_get_frame(block); + index = btr_cur_get_index(cursor); + + ut_ad(mtr_memo_contains(mtr, dict_index_get_lock(index), + MTR_MEMO_X_LOCK)); + ut_ad(mtr_memo_contains(mtr, block, MTR_MEMO_PAGE_X_FIX)); + if (!has_reserved_extents) { + /* First reserve enough free space for the file segments + of the index tree, so that the node pointer updates will + not fail because of lack of space */ + + n_extents = cursor->tree_height / 32 + 1; + + success = fsp_reserve_free_extents(&n_reserved, + index->space, + n_extents, + FSP_CLEANING, mtr); + if (!success) { + *err = DB_OUT_OF_FILE_SPACE; + + return(FALSE); + } + } + + heap = mem_heap_create(1024); + rec = btr_cur_get_rec(cursor); + page_zip = buf_block_get_page_zip(block); +#ifdef UNIV_ZIP_DEBUG + ut_a(!page_zip || page_zip_validate(page_zip, page)); +#endif /* UNIV_ZIP_DEBUG */ + + offsets = rec_get_offsets(rec, index, NULL, ULINT_UNDEFINED, &heap); + + if (rec_offs_any_extern(offsets)) { + btr_rec_free_externally_stored_fields(index, + rec, offsets, page_zip, + rb_ctx, mtr); +#ifdef UNIV_ZIP_DEBUG + ut_a(!page_zip || page_zip_validate(page_zip, page)); +#endif /* UNIV_ZIP_DEBUG */ + } + + if (UNIV_UNLIKELY(page_get_n_recs(page) < 2) + && UNIV_UNLIKELY(dict_index_get_page(index) + != buf_block_get_page_no(block))) { + + /* If there is only one record, drop the whole page in + btr_discard_page, if this is not the root page */ + + btr_discard_page(cursor, mtr); + + *err = DB_SUCCESS; + ret = TRUE; + + goto return_after_reservations; + } + + lock_update_delete(block, rec); + level = btr_page_get_level(page, mtr); + + if (level > 0 + && UNIV_UNLIKELY(rec == page_rec_get_next( + page_get_infimum_rec(page)))) { + + rec_t* next_rec = page_rec_get_next(rec); + + if (btr_page_get_prev(page, mtr) == FIL_NULL) { + + /* If we delete the leftmost node pointer on a + non-leaf level, we must mark the new leftmost node + pointer as the predefined minimum record */ + + /* This will make page_zip_validate() fail until + page_cur_delete_rec() completes. This is harmless, + because everything will take place within a single + mini-transaction and because writing to the redo log + is an atomic operation (performed by mtr_commit()). */ + btr_set_min_rec_mark(next_rec, mtr); + } else { + /* Otherwise, if we delete the leftmost node pointer + on a page, we have to change the father node pointer + so that it is equal to the new leftmost node pointer + on the page */ + + btr_node_ptr_delete(index, block, mtr); + + node_ptr = dict_index_build_node_ptr( + index, next_rec, buf_block_get_page_no(block), + heap, level); + + btr_insert_on_non_leaf_level(index, + level + 1, node_ptr, mtr); + } + } + + btr_search_update_hash_on_delete(cursor); + + page_cur_delete_rec(btr_cur_get_page_cur(cursor), index, offsets, mtr); +#ifdef UNIV_ZIP_DEBUG + ut_a(!page_zip || page_zip_validate(page_zip, page)); +#endif /* UNIV_ZIP_DEBUG */ + + ut_ad(btr_check_node_ptr(index, block, mtr)); + + *err = DB_SUCCESS; + +return_after_reservations: + mem_heap_free(heap); + + if (ret == FALSE) { + ret = btr_cur_compress_if_useful(cursor, mtr); + } + + if (n_extents > 0) { + fil_space_release_free_extents(index->space, n_reserved); + } + + return(ret); +} + +/*********************************************************************** +Adds path information to the cursor for the current page, for which +the binary search has been performed. */ +static +void +btr_cur_add_path_info( +/*==================*/ + btr_cur_t* cursor, /* in: cursor positioned on a page */ + ulint height, /* in: height of the page in tree; + 0 means leaf node */ + ulint root_height) /* in: root node height in tree */ +{ + btr_path_t* slot; + rec_t* rec; + + ut_a(cursor->path_arr); + + if (root_height >= BTR_PATH_ARRAY_N_SLOTS - 1) { + /* Do nothing; return empty path */ + + slot = cursor->path_arr; + slot->nth_rec = ULINT_UNDEFINED; + + return; + } + + if (height == 0) { + /* Mark end of slots for path */ + slot = cursor->path_arr + root_height + 1; + slot->nth_rec = ULINT_UNDEFINED; + } + + rec = btr_cur_get_rec(cursor); + + slot = cursor->path_arr + (root_height - height); + + slot->nth_rec = page_rec_get_n_recs_before(rec); + slot->n_recs = page_get_n_recs(page_align(rec)); +} + +/*********************************************************************** +Estimates the number of rows in a given index range. */ +UNIV_INTERN +ib_int64_t +btr_estimate_n_rows_in_range( +/*=========================*/ + /* out: estimated number of rows */ + dict_index_t* index, /* in: index */ + const dtuple_t* tuple1, /* in: range start, may also be empty tuple */ + ulint mode1, /* in: search mode for range start */ + const dtuple_t* tuple2, /* in: range end, may also be empty tuple */ + ulint mode2) /* in: search mode for range end */ +{ + btr_path_t path1[BTR_PATH_ARRAY_N_SLOTS]; + btr_path_t path2[BTR_PATH_ARRAY_N_SLOTS]; + btr_cur_t cursor; + btr_path_t* slot1; + btr_path_t* slot2; + ibool diverged; + ibool diverged_lot; + ulint divergence_level; + ib_int64_t n_rows; + ulint i; + mtr_t mtr; + + mtr_start(&mtr); + + cursor.path_arr = path1; + + if (dtuple_get_n_fields(tuple1) > 0) { + + btr_cur_search_to_nth_level(index, 0, tuple1, mode1, + BTR_SEARCH_LEAF | BTR_ESTIMATE, + &cursor, 0, &mtr); + } else { + btr_cur_open_at_index_side(TRUE, index, + BTR_SEARCH_LEAF | BTR_ESTIMATE, + &cursor, &mtr); + } + + mtr_commit(&mtr); + + mtr_start(&mtr); + + cursor.path_arr = path2; + + if (dtuple_get_n_fields(tuple2) > 0) { + + btr_cur_search_to_nth_level(index, 0, tuple2, mode2, + BTR_SEARCH_LEAF | BTR_ESTIMATE, + &cursor, 0, &mtr); + } else { + btr_cur_open_at_index_side(FALSE, index, + BTR_SEARCH_LEAF | BTR_ESTIMATE, + &cursor, &mtr); + } + + mtr_commit(&mtr); + + /* We have the path information for the range in path1 and path2 */ + + n_rows = 1; + diverged = FALSE; /* This becomes true when the path is not + the same any more */ + diverged_lot = FALSE; /* This becomes true when the paths are + not the same or adjacent any more */ + divergence_level = 1000000; /* This is the level where paths diverged + a lot */ + for (i = 0; ; i++) { + ut_ad(i < BTR_PATH_ARRAY_N_SLOTS); + + slot1 = path1 + i; + slot2 = path2 + i; + + if (slot1->nth_rec == ULINT_UNDEFINED + || slot2->nth_rec == ULINT_UNDEFINED) { + + if (i > divergence_level + 1) { + /* In trees whose height is > 1 our algorithm + tends to underestimate: multiply the estimate + by 2: */ + + n_rows = n_rows * 2; + } + + /* Do not estimate the number of rows in the range + to over 1 / 2 of the estimated rows in the whole + table */ + + if (n_rows > index->table->stat_n_rows / 2) { + n_rows = index->table->stat_n_rows / 2; + + /* If there are just 0 or 1 rows in the table, + then we estimate all rows are in the range */ + + if (n_rows == 0) { + n_rows = index->table->stat_n_rows; + } + } + + return(n_rows); + } + + if (!diverged && slot1->nth_rec != slot2->nth_rec) { + + diverged = TRUE; + + if (slot1->nth_rec < slot2->nth_rec) { + n_rows = slot2->nth_rec - slot1->nth_rec; + + if (n_rows > 1) { + diverged_lot = TRUE; + divergence_level = i; + } + } else { + /* Maybe the tree has changed between + searches */ + + return(10); + } + + } else if (diverged && !diverged_lot) { + + if (slot1->nth_rec < slot1->n_recs + || slot2->nth_rec > 1) { + + diverged_lot = TRUE; + divergence_level = i; + + n_rows = 0; + + if (slot1->nth_rec < slot1->n_recs) { + n_rows += slot1->n_recs + - slot1->nth_rec; + } + + if (slot2->nth_rec > 1) { + n_rows += slot2->nth_rec - 1; + } + } + } else if (diverged_lot) { + + n_rows = (n_rows * (slot1->n_recs + slot2->n_recs)) + / 2; + } + } +} + +/*********************************************************************** +Estimates the number of different key values in a given index, for +each n-column prefix of the index where n <= dict_index_get_n_unique(index). +The estimates are stored in the array index->stat_n_diff_key_vals. */ +UNIV_INTERN +void +btr_estimate_number_of_different_key_vals( +/*======================================*/ + dict_index_t* index) /* in: index */ +{ + btr_cur_t cursor; + page_t* page; + rec_t* rec; + ulint n_cols; + ulint matched_fields; + ulint matched_bytes; + ib_int64_t* n_diff; + ullint n_sample_pages; /* number of pages to sample */ + ulint not_empty_flag = 0; + ulint total_external_size = 0; + ulint i; + ulint j; + ullint add_on; + mtr_t mtr; + mem_heap_t* heap = NULL; + ulint offsets_rec_[REC_OFFS_NORMAL_SIZE]; + ulint offsets_next_rec_[REC_OFFS_NORMAL_SIZE]; + ulint* offsets_rec = offsets_rec_; + ulint* offsets_next_rec= offsets_next_rec_; + rec_offs_init(offsets_rec_); + rec_offs_init(offsets_next_rec_); + + n_cols = dict_index_get_n_unique(index); + + n_diff = mem_zalloc((n_cols + 1) * sizeof(ib_int64_t)); + + /* It makes no sense to test more pages than are contained + in the index, thus we lower the number if it is too high */ + if (srv_stats_sample_pages > index->stat_index_size) { + if (index->stat_index_size > 0) { + n_sample_pages = index->stat_index_size; + } else { + n_sample_pages = 1; + } + } else { + n_sample_pages = srv_stats_sample_pages; + } + + /* We sample some pages in the index to get an estimate */ + + for (i = 0; i < n_sample_pages; i++) { + rec_t* supremum; + mtr_start(&mtr); + + btr_cur_open_at_rnd_pos(index, BTR_SEARCH_LEAF, &cursor, &mtr); + + /* Count the number of different key values for each prefix of + the key on this index page. If the prefix does not determine + the index record uniquely in the B-tree, then we subtract one + because otherwise our algorithm would give a wrong estimate + for an index where there is just one key value. */ + + page = btr_cur_get_page(&cursor); + + supremum = page_get_supremum_rec(page); + rec = page_rec_get_next(page_get_infimum_rec(page)); + + if (rec != supremum) { + not_empty_flag = 1; + offsets_rec = rec_get_offsets(rec, index, offsets_rec, + ULINT_UNDEFINED, &heap); + } + + while (rec != supremum) { + rec_t* next_rec = page_rec_get_next(rec); + if (next_rec == supremum) { + break; + } + + matched_fields = 0; + matched_bytes = 0; + offsets_next_rec = rec_get_offsets(next_rec, index, + offsets_next_rec, + n_cols, &heap); + + cmp_rec_rec_with_match(rec, next_rec, + offsets_rec, offsets_next_rec, + index, &matched_fields, + &matched_bytes); + + for (j = matched_fields + 1; j <= n_cols; j++) { + /* We add one if this index record has + a different prefix from the previous */ + + n_diff[j]++; + } + + total_external_size + += btr_rec_get_externally_stored_len( + rec, offsets_rec); + + rec = next_rec; + /* Initialize offsets_rec for the next round + and assign the old offsets_rec buffer to + offsets_next_rec. */ + { + ulint* offsets_tmp = offsets_rec; + offsets_rec = offsets_next_rec; + offsets_next_rec = offsets_tmp; + } + } + + + if (n_cols == dict_index_get_n_unique_in_tree(index)) { + + /* If there is more than one leaf page in the tree, + we add one because we know that the first record + on the page certainly had a different prefix than the + last record on the previous index page in the + alphabetical order. Before this fix, if there was + just one big record on each clustered index page, the + algorithm grossly underestimated the number of rows + in the table. */ + + if (btr_page_get_prev(page, &mtr) != FIL_NULL + || btr_page_get_next(page, &mtr) != FIL_NULL) { + + n_diff[n_cols]++; + } + } + + offsets_rec = rec_get_offsets(rec, index, offsets_rec, + ULINT_UNDEFINED, &heap); + total_external_size += btr_rec_get_externally_stored_len( + rec, offsets_rec); + mtr_commit(&mtr); + } + + /* If we saw k borders between different key values on + n_sample_pages leaf pages, we can estimate how many + there will be in index->stat_n_leaf_pages */ + + /* We must take into account that our sample actually represents + also the pages used for external storage of fields (those pages are + included in index->stat_n_leaf_pages) */ + + for (j = 0; j <= n_cols; j++) { + index->stat_n_diff_key_vals[j] + = ((n_diff[j] + * (ib_int64_t)index->stat_n_leaf_pages + + n_sample_pages - 1 + + total_external_size + + not_empty_flag) + / (n_sample_pages + + total_external_size)); + + /* If the tree is small, smaller than + 10 * n_sample_pages + total_external_size, then + the above estimate is ok. For bigger trees it is common that we + do not see any borders between key values in the few pages + we pick. But still there may be n_sample_pages + different key values, or even more. Let us try to approximate + that: */ + + add_on = index->stat_n_leaf_pages + / (10 * (n_sample_pages + + total_external_size)); + + if (add_on > n_sample_pages) { + add_on = n_sample_pages; + } + + index->stat_n_diff_key_vals[j] += add_on; + } + + mem_free(n_diff); + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } +} + +/*================== EXTERNAL STORAGE OF BIG FIELDS ===================*/ + +/*************************************************************** +Gets the externally stored size of a record, in units of a database page. */ +static +ulint +btr_rec_get_externally_stored_len( +/*==============================*/ + /* out: externally stored part, + in units of a database page */ + rec_t* rec, /* in: record */ + const ulint* offsets)/* in: array returned by rec_get_offsets() */ +{ + ulint n_fields; + byte* data; + ulint local_len; + ulint extern_len; + ulint total_extern_len = 0; + ulint i; + + ut_ad(!rec_offs_comp(offsets) || !rec_get_node_ptr_flag(rec)); + n_fields = rec_offs_n_fields(offsets); + + for (i = 0; i < n_fields; i++) { + if (rec_offs_nth_extern(offsets, i)) { + + data = rec_get_nth_field(rec, offsets, i, &local_len); + + local_len -= BTR_EXTERN_FIELD_REF_SIZE; + + extern_len = mach_read_from_4(data + local_len + + BTR_EXTERN_LEN + 4); + + total_extern_len += ut_calc_align(extern_len, + UNIV_PAGE_SIZE); + } + } + + return(total_extern_len / UNIV_PAGE_SIZE); +} + +/*********************************************************************** +Sets the ownership bit of an externally stored field in a record. */ +static +void +btr_cur_set_ownership_of_extern_field( +/*==================================*/ + page_zip_des_t* page_zip,/* in/out: compressed page whose uncompressed + part will be updated, or NULL */ + rec_t* rec, /* in/out: clustered index record */ + dict_index_t* index, /* in: index of the page */ + const ulint* offsets,/* in: array returned by rec_get_offsets() */ + ulint i, /* in: field number */ + ibool val, /* in: value to set */ + mtr_t* mtr) /* in: mtr, or NULL if not logged */ +{ + byte* data; + ulint local_len; + ulint byte_val; + + data = rec_get_nth_field(rec, offsets, i, &local_len); + + ut_a(local_len >= BTR_EXTERN_FIELD_REF_SIZE); + + local_len -= BTR_EXTERN_FIELD_REF_SIZE; + + byte_val = mach_read_from_1(data + local_len + BTR_EXTERN_LEN); + + if (val) { + byte_val = byte_val & (~BTR_EXTERN_OWNER_FLAG); + } else { + byte_val = byte_val | BTR_EXTERN_OWNER_FLAG; + } + + if (UNIV_LIKELY_NULL(page_zip)) { + mach_write_to_1(data + local_len + BTR_EXTERN_LEN, byte_val); + page_zip_write_blob_ptr(page_zip, rec, index, offsets, i, mtr); + } else if (UNIV_LIKELY(mtr != NULL)) { + + mlog_write_ulint(data + local_len + BTR_EXTERN_LEN, byte_val, + MLOG_1BYTE, mtr); + } else { + mach_write_to_1(data + local_len + BTR_EXTERN_LEN, byte_val); + } +} + +/*********************************************************************** +Marks not updated extern fields as not-owned by this record. The ownership +is transferred to the updated record which is inserted elsewhere in the +index tree. In purge only the owner of externally stored field is allowed +to free the field. */ +UNIV_INTERN +void +btr_cur_mark_extern_inherited_fields( +/*=================================*/ + page_zip_des_t* page_zip,/* in/out: compressed page whose uncompressed + part will be updated, or NULL */ + rec_t* rec, /* in/out: record in a clustered index */ + dict_index_t* index, /* in: index of the page */ + const ulint* offsets,/* in: array returned by rec_get_offsets() */ + const upd_t* update, /* in: update vector */ + mtr_t* mtr) /* in: mtr, or NULL if not logged */ +{ + ulint n; + ulint j; + ulint i; + + ut_ad(rec_offs_validate(rec, NULL, offsets)); + ut_ad(!rec_offs_comp(offsets) || !rec_get_node_ptr_flag(rec)); + + if (!rec_offs_any_extern(offsets)) { + + return; + } + + n = rec_offs_n_fields(offsets); + + for (i = 0; i < n; i++) { + if (rec_offs_nth_extern(offsets, i)) { + + /* Check it is not in updated fields */ + + if (update) { + for (j = 0; j < upd_get_n_fields(update); + j++) { + if (upd_get_nth_field(update, j) + ->field_no == i) { + + goto updated; + } + } + } + + btr_cur_set_ownership_of_extern_field( + page_zip, rec, index, offsets, i, FALSE, mtr); +updated: + ; + } + } +} + +/*********************************************************************** +The complement of the previous function: in an update entry may inherit +some externally stored fields from a record. We must mark them as inherited +in entry, so that they are not freed in a rollback. */ +UNIV_INTERN +void +btr_cur_mark_dtuple_inherited_extern( +/*=================================*/ + dtuple_t* entry, /* in/out: updated entry to be + inserted to clustered index */ + const upd_t* update) /* in: update vector */ +{ + ulint i; + + for (i = 0; i < dtuple_get_n_fields(entry); i++) { + + dfield_t* dfield = dtuple_get_nth_field(entry, i); + byte* data; + ulint len; + ulint j; + + if (!dfield_is_ext(dfield)) { + continue; + } + + /* Check if it is in updated fields */ + + for (j = 0; j < upd_get_n_fields(update); j++) { + if (upd_get_nth_field(update, j)->field_no == i) { + + goto is_updated; + } + } + + data = dfield_get_data(dfield); + len = dfield_get_len(dfield); + data[len - BTR_EXTERN_FIELD_REF_SIZE + BTR_EXTERN_LEN] + |= BTR_EXTERN_INHERITED_FLAG; + +is_updated: + ; + } +} + +/*********************************************************************** +Marks all extern fields in a record as owned by the record. This function +should be called if the delete mark of a record is removed: a not delete +marked record always owns all its extern fields. */ +static +void +btr_cur_unmark_extern_fields( +/*=========================*/ + page_zip_des_t* page_zip,/* in/out: compressed page whose uncompressed + part will be updated, or NULL */ + rec_t* rec, /* in/out: record in a clustered index */ + dict_index_t* index, /* in: index of the page */ + const ulint* offsets,/* in: array returned by rec_get_offsets() */ + mtr_t* mtr) /* in: mtr, or NULL if not logged */ +{ + ulint n; + ulint i; + + ut_ad(!rec_offs_comp(offsets) || !rec_get_node_ptr_flag(rec)); + n = rec_offs_n_fields(offsets); + + if (!rec_offs_any_extern(offsets)) { + + return; + } + + for (i = 0; i < n; i++) { + if (rec_offs_nth_extern(offsets, i)) { + + btr_cur_set_ownership_of_extern_field( + page_zip, rec, index, offsets, i, TRUE, mtr); + } + } +} + +/*********************************************************************** +Marks all extern fields in a dtuple as owned by the record. */ +UNIV_INTERN +void +btr_cur_unmark_dtuple_extern_fields( +/*================================*/ + dtuple_t* entry) /* in/out: clustered index entry */ +{ + ulint i; + + for (i = 0; i < dtuple_get_n_fields(entry); i++) { + dfield_t* dfield = dtuple_get_nth_field(entry, i); + + if (dfield_is_ext(dfield)) { + byte* data = dfield_get_data(dfield); + ulint len = dfield_get_len(dfield); + + data[len - BTR_EXTERN_FIELD_REF_SIZE + BTR_EXTERN_LEN] + &= ~BTR_EXTERN_OWNER_FLAG; + } + } +} + +/*********************************************************************** +Flags the data tuple fields that are marked as extern storage in the +update vector. We use this function to remember which fields we must +mark as extern storage in a record inserted for an update. */ +UNIV_INTERN +ulint +btr_push_update_extern_fields( +/*==========================*/ + /* out: number of flagged external columns */ + dtuple_t* tuple, /* in/out: data tuple */ + const upd_t* update, /* in: update vector */ + mem_heap_t* heap) /* in: memory heap */ +{ + ulint n_pushed = 0; + ulint n; + const upd_field_t* uf; + + ut_ad(tuple); + ut_ad(update); + + uf = update->fields; + n = upd_get_n_fields(update); + + for (; n--; uf++) { + if (dfield_is_ext(&uf->new_val)) { + dfield_t* field + = dtuple_get_nth_field(tuple, uf->field_no); + + if (!dfield_is_ext(field)) { + dfield_set_ext(field); + n_pushed++; + } + + switch (uf->orig_len) { + byte* data; + ulint len; + byte* buf; + case 0: + break; + case BTR_EXTERN_FIELD_REF_SIZE: + /* Restore the original locally stored + part of the column. In the undo log, + InnoDB writes a longer prefix of externally + stored columns, so that column prefixes + in secondary indexes can be reconstructed. */ + dfield_set_data(field, (byte*) dfield_get_data(field) + + dfield_get_len(field) + - BTR_EXTERN_FIELD_REF_SIZE, + BTR_EXTERN_FIELD_REF_SIZE); + dfield_set_ext(field); + break; + default: + /* Reconstruct the original locally + stored part of the column. The data + will have to be copied. */ + ut_a(uf->orig_len > BTR_EXTERN_FIELD_REF_SIZE); + + data = dfield_get_data(field); + len = dfield_get_len(field); + + buf = mem_heap_alloc(heap, uf->orig_len); + /* Copy the locally stored prefix. */ + memcpy(buf, data, + uf->orig_len + - BTR_EXTERN_FIELD_REF_SIZE); + /* Copy the BLOB pointer. */ + memcpy(buf + uf->orig_len + - BTR_EXTERN_FIELD_REF_SIZE, + data + len - BTR_EXTERN_FIELD_REF_SIZE, + BTR_EXTERN_FIELD_REF_SIZE); + + dfield_set_data(field, buf, uf->orig_len); + dfield_set_ext(field); + } + } + } + + return(n_pushed); +} + +/*********************************************************************** +Returns the length of a BLOB part stored on the header page. */ +static +ulint +btr_blob_get_part_len( +/*==================*/ + /* out: part length */ + const byte* blob_header) /* in: blob header */ +{ + return(mach_read_from_4(blob_header + BTR_BLOB_HDR_PART_LEN)); +} + +/*********************************************************************** +Returns the page number where the next BLOB part is stored. */ +static +ulint +btr_blob_get_next_page_no( +/*======================*/ + /* out: page number or FIL_NULL if + no more pages */ + const byte* blob_header) /* in: blob header */ +{ + return(mach_read_from_4(blob_header + BTR_BLOB_HDR_NEXT_PAGE_NO)); +} + +/*********************************************************************** +Deallocate a buffer block that was reserved for a BLOB part. */ +static +void +btr_blob_free( +/*==========*/ + buf_block_t* block, /* in: buffer block */ + ibool all, /* in: TRUE=remove also the compressed page + if there is one */ + mtr_t* mtr) /* in: mini-transaction to commit */ +{ + ulint space = buf_block_get_space(block); + ulint page_no = buf_block_get_page_no(block); + + ut_ad(mtr_memo_contains(mtr, block, MTR_MEMO_PAGE_X_FIX)); + + mtr_commit(mtr); + + buf_pool_mutex_enter(); + mutex_enter(&block->mutex); + + /* Only free the block if it is still allocated to + the same file page. */ + + if (buf_block_get_state(block) + == BUF_BLOCK_FILE_PAGE + && buf_block_get_space(block) == space + && buf_block_get_page_no(block) == page_no) { + + if (buf_LRU_free_block(&block->page, all, NULL) + != BUF_LRU_FREED + && all && block->page.zip.data) { + /* Attempt to deallocate the uncompressed page + if the whole block cannot be deallocted. */ + + buf_LRU_free_block(&block->page, FALSE, NULL); + } + } + + buf_pool_mutex_exit(); + mutex_exit(&block->mutex); +} + +/*********************************************************************** +Stores the fields in big_rec_vec to the tablespace and puts pointers to +them in rec. The extern flags in rec will have to be set beforehand. +The fields are stored on pages allocated from leaf node +file segment of the index tree. */ +UNIV_INTERN +ulint +btr_store_big_rec_extern_fields( +/*============================*/ + /* out: DB_SUCCESS or error */ + dict_index_t* index, /* in: index of rec; the index tree + MUST be X-latched */ + buf_block_t* rec_block, /* in/out: block containing rec */ + rec_t* rec, /* in/out: record */ + const ulint* offsets, /* in: rec_get_offsets(rec, index); + the "external storage" flags in offsets + will not correspond to rec when + this function returns */ + big_rec_t* big_rec_vec, /* in: vector containing fields + to be stored externally */ + mtr_t* local_mtr __attribute__((unused))) /* in: mtr + containing the latch to rec and to the + tree */ +{ + ulint rec_page_no; + byte* field_ref; + ulint extern_len; + ulint store_len; + ulint page_no; + ulint space_id; + ulint zip_size; + ulint prev_page_no; + ulint hint_page_no; + ulint i; + mtr_t mtr; + mem_heap_t* heap = NULL; + page_zip_des_t* page_zip; + z_stream c_stream; + + ut_ad(rec_offs_validate(rec, index, offsets)); + ut_ad(mtr_memo_contains(local_mtr, dict_index_get_lock(index), + MTR_MEMO_X_LOCK)); + ut_ad(mtr_memo_contains(local_mtr, rec_block, MTR_MEMO_PAGE_X_FIX)); + ut_ad(buf_block_get_frame(rec_block) == page_align(rec)); + ut_a(dict_index_is_clust(index)); + + page_zip = buf_block_get_page_zip(rec_block); + ut_a(dict_table_zip_size(index->table) + == buf_block_get_zip_size(rec_block)); + + space_id = buf_block_get_space(rec_block); + zip_size = buf_block_get_zip_size(rec_block); + rec_page_no = buf_block_get_page_no(rec_block); + ut_a(fil_page_get_type(page_align(rec)) == FIL_PAGE_INDEX); + + if (UNIV_LIKELY_NULL(page_zip)) { + int err; + + /* Zlib deflate needs 128 kilobytes for the default + window size, plus 512 << memLevel, plus a few + kilobytes for small objects. We use reduced memLevel + to limit the memory consumption, and preallocate the + heap, hoping to avoid memory fragmentation. */ + heap = mem_heap_create(250000); + page_zip_set_alloc(&c_stream, heap); + + err = deflateInit2(&c_stream, Z_DEFAULT_COMPRESSION, + Z_DEFLATED, 15, 7, Z_DEFAULT_STRATEGY); + ut_a(err == Z_OK); + } + + /* We have to create a file segment to the tablespace + for each field and put the pointer to the field in rec */ + + for (i = 0; i < big_rec_vec->n_fields; i++) { + ut_ad(rec_offs_nth_extern(offsets, + big_rec_vec->fields[i].field_no)); + { + ulint local_len; + field_ref = rec_get_nth_field( + rec, offsets, big_rec_vec->fields[i].field_no, + &local_len); + ut_a(local_len >= BTR_EXTERN_FIELD_REF_SIZE); + local_len -= BTR_EXTERN_FIELD_REF_SIZE; + field_ref += local_len; + } + extern_len = big_rec_vec->fields[i].len; + + ut_a(extern_len > 0); + + prev_page_no = FIL_NULL; + + if (UNIV_LIKELY_NULL(page_zip)) { + int err = deflateReset(&c_stream); + ut_a(err == Z_OK); + + c_stream.next_in = (void*) big_rec_vec->fields[i].data; + c_stream.avail_in = extern_len; + } + + for (;;) { + buf_block_t* block; + page_t* page; + + mtr_start(&mtr); + + if (prev_page_no == FIL_NULL) { + hint_page_no = 1 + rec_page_no; + } else { + hint_page_no = prev_page_no + 1; + } + + block = btr_page_alloc(index, hint_page_no, + FSP_NO_DIR, 0, &mtr); + if (UNIV_UNLIKELY(block == NULL)) { + + mtr_commit(&mtr); + + if (UNIV_LIKELY_NULL(page_zip)) { + deflateEnd(&c_stream); + mem_heap_free(heap); + } + + return(DB_OUT_OF_FILE_SPACE); + } + + page_no = buf_block_get_page_no(block); + page = buf_block_get_frame(block); + + if (prev_page_no != FIL_NULL) { + buf_block_t* prev_block; + page_t* prev_page; + + prev_block = buf_page_get(space_id, zip_size, + prev_page_no, + RW_X_LATCH, &mtr); + buf_block_dbg_add_level(prev_block, + SYNC_EXTERN_STORAGE); + prev_page = buf_block_get_frame(prev_block); + + if (UNIV_LIKELY_NULL(page_zip)) { + mlog_write_ulint( + prev_page + FIL_PAGE_NEXT, + page_no, MLOG_4BYTES, &mtr); + memcpy(buf_block_get_page_zip( + prev_block) + ->data + FIL_PAGE_NEXT, + prev_page + FIL_PAGE_NEXT, 4); + } else { + mlog_write_ulint( + prev_page + FIL_PAGE_DATA + + BTR_BLOB_HDR_NEXT_PAGE_NO, + page_no, MLOG_4BYTES, &mtr); + } + + } + + if (UNIV_LIKELY_NULL(page_zip)) { + int err; + page_zip_des_t* blob_page_zip; + + mach_write_to_2(page + FIL_PAGE_TYPE, + prev_page_no == FIL_NULL + ? FIL_PAGE_TYPE_ZBLOB + : FIL_PAGE_TYPE_ZBLOB2); + + c_stream.next_out = page + + FIL_PAGE_DATA; + c_stream.avail_out + = page_zip_get_size(page_zip) + - FIL_PAGE_DATA; + + err = deflate(&c_stream, Z_FINISH); + ut_a(err == Z_OK || err == Z_STREAM_END); + ut_a(err == Z_STREAM_END + || c_stream.avail_out == 0); + + /* Write the "next BLOB page" pointer */ + mlog_write_ulint(page + FIL_PAGE_NEXT, + FIL_NULL, MLOG_4BYTES, &mtr); + /* Initialize the unused "prev page" pointer */ + mlog_write_ulint(page + FIL_PAGE_PREV, + FIL_NULL, MLOG_4BYTES, &mtr); + /* Write a back pointer to the record + into the otherwise unused area. This + information could be useful in + debugging. Later, we might want to + implement the possibility to relocate + BLOB pages. Then, we would need to be + able to adjust the BLOB pointer in the + record. We do not store the heap + number of the record, because it can + change in page_zip_reorganize() or + btr_page_reorganize(). However, also + the page number of the record may + change when B-tree nodes are split or + merged. */ + mlog_write_ulint(page + + FIL_PAGE_FILE_FLUSH_LSN, + space_id, + MLOG_4BYTES, &mtr); + mlog_write_ulint(page + + FIL_PAGE_FILE_FLUSH_LSN + 4, + rec_page_no, + MLOG_4BYTES, &mtr); + + /* Zero out the unused part of the page. */ + memset(page + page_zip_get_size(page_zip) + - c_stream.avail_out, + 0, c_stream.avail_out); + mlog_log_string(page + FIL_PAGE_TYPE, + page_zip_get_size(page_zip) + - FIL_PAGE_TYPE, + &mtr); + /* Copy the page to compressed storage, + because it will be flushed to disk + from there. */ + blob_page_zip = buf_block_get_page_zip(block); + ut_ad(blob_page_zip); + ut_ad(page_zip_get_size(blob_page_zip) + == page_zip_get_size(page_zip)); + memcpy(blob_page_zip->data, page, + page_zip_get_size(page_zip)); + + if (err == Z_OK && prev_page_no != FIL_NULL) { + + goto next_zip_page; + } + + rec_block = buf_page_get(space_id, zip_size, + rec_page_no, + RW_X_LATCH, &mtr); + buf_block_dbg_add_level(rec_block, + SYNC_NO_ORDER_CHECK); + + if (err == Z_STREAM_END) { + mach_write_to_4(field_ref + + BTR_EXTERN_LEN, 0); + mach_write_to_4(field_ref + + BTR_EXTERN_LEN + 4, + c_stream.total_in); + } else { + memset(field_ref + BTR_EXTERN_LEN, + 0, 8); + } + + if (prev_page_no == FIL_NULL) { + mach_write_to_4(field_ref + + BTR_EXTERN_SPACE_ID, + space_id); + + mach_write_to_4(field_ref + + BTR_EXTERN_PAGE_NO, + page_no); + + mach_write_to_4(field_ref + + BTR_EXTERN_OFFSET, + FIL_PAGE_NEXT); + } + + page_zip_write_blob_ptr( + page_zip, rec, index, offsets, + big_rec_vec->fields[i].field_no, &mtr); + +next_zip_page: + prev_page_no = page_no; + + /* Commit mtr and release the + uncompressed page frame to save memory. */ + btr_blob_free(block, FALSE, &mtr); + + if (err == Z_STREAM_END) { + break; + } + } else { + mlog_write_ulint(page + FIL_PAGE_TYPE, + FIL_PAGE_TYPE_BLOB, + MLOG_2BYTES, &mtr); + + if (extern_len > (UNIV_PAGE_SIZE + - FIL_PAGE_DATA + - BTR_BLOB_HDR_SIZE + - FIL_PAGE_DATA_END)) { + store_len = UNIV_PAGE_SIZE + - FIL_PAGE_DATA + - BTR_BLOB_HDR_SIZE + - FIL_PAGE_DATA_END; + } else { + store_len = extern_len; + } + + mlog_write_string(page + FIL_PAGE_DATA + + BTR_BLOB_HDR_SIZE, + (const byte*) + big_rec_vec->fields[i].data + + big_rec_vec->fields[i].len + - extern_len, + store_len, &mtr); + mlog_write_ulint(page + FIL_PAGE_DATA + + BTR_BLOB_HDR_PART_LEN, + store_len, MLOG_4BYTES, &mtr); + mlog_write_ulint(page + FIL_PAGE_DATA + + BTR_BLOB_HDR_NEXT_PAGE_NO, + FIL_NULL, MLOG_4BYTES, &mtr); + + extern_len -= store_len; + + rec_block = buf_page_get(space_id, zip_size, + rec_page_no, + RW_X_LATCH, &mtr); + buf_block_dbg_add_level(rec_block, + SYNC_NO_ORDER_CHECK); + + mlog_write_ulint(field_ref + BTR_EXTERN_LEN, 0, + MLOG_4BYTES, &mtr); + mlog_write_ulint(field_ref + + BTR_EXTERN_LEN + 4, + big_rec_vec->fields[i].len + - extern_len, + MLOG_4BYTES, &mtr); + + if (prev_page_no == FIL_NULL) { + mlog_write_ulint(field_ref + + BTR_EXTERN_SPACE_ID, + space_id, + MLOG_4BYTES, &mtr); + + mlog_write_ulint(field_ref + + BTR_EXTERN_PAGE_NO, + page_no, + MLOG_4BYTES, &mtr); + + mlog_write_ulint(field_ref + + BTR_EXTERN_OFFSET, + FIL_PAGE_DATA, + MLOG_4BYTES, &mtr); + } + + prev_page_no = page_no; + + mtr_commit(&mtr); + + if (extern_len == 0) { + break; + } + } + } + } + + if (UNIV_LIKELY_NULL(page_zip)) { + deflateEnd(&c_stream); + mem_heap_free(heap); + } + + return(DB_SUCCESS); +} + +/*********************************************************************** +Check the FIL_PAGE_TYPE on an uncompressed BLOB page. */ +static +void +btr_check_blob_fil_page_type( +/*=========================*/ + ulint space_id, /* in: space id */ + ulint page_no, /* in: page number */ + const page_t* page, /* in: page */ + ibool read) /* in: TRUE=read, FALSE=purge */ +{ + ulint type = fil_page_get_type(page); + + ut_a(space_id == page_get_space_id(page)); + ut_a(page_no == page_get_page_no(page)); + + if (UNIV_UNLIKELY(type != FIL_PAGE_TYPE_BLOB)) { + ulint flags = fil_space_get_flags(space_id); + + if (UNIV_LIKELY + ((flags & DICT_TF_FORMAT_MASK) == DICT_TF_FORMAT_51)) { + /* Old versions of InnoDB did not initialize + FIL_PAGE_TYPE on BLOB pages. Do not print + anything about the type mismatch when reading + a BLOB page that is in Antelope format.*/ + return; + } + + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: FIL_PAGE_TYPE=%lu" + " on BLOB %s space %lu page %lu flags %lx\n", + (ulong) type, read ? "read" : "purge", + (ulong) space_id, (ulong) page_no, (ulong) flags); + ut_error; + } +} + +/*********************************************************************** +Frees the space in an externally stored field to the file space +management if the field in data is owned by the externally stored field, +in a rollback we may have the additional condition that the field must +not be inherited. */ +UNIV_INTERN +void +btr_free_externally_stored_field( +/*=============================*/ + dict_index_t* index, /* in: index of the data, the index + tree MUST be X-latched; if the tree + height is 1, then also the root page + must be X-latched! (this is relevant + in the case this function is called + from purge where 'data' is located on + an undo log page, not an index + page) */ + byte* field_ref, /* in/out: field reference */ + const rec_t* rec, /* in: record containing field_ref, for + page_zip_write_blob_ptr(), or NULL */ + const ulint* offsets, /* in: rec_get_offsets(rec, index), + or NULL */ + page_zip_des_t* page_zip, /* in: compressed page corresponding + to rec, or NULL if rec == NULL */ + ulint i, /* in: field number of field_ref; + ignored if rec == NULL */ + enum trx_rb_ctx rb_ctx, /* in: rollback context */ + mtr_t* local_mtr __attribute__((unused))) /* in: mtr + containing the latch to data an an + X-latch to the index tree */ +{ + page_t* page; + ulint space_id; + ulint rec_zip_size = dict_table_zip_size(index->table); + ulint ext_zip_size; + ulint page_no; + ulint next_page_no; + mtr_t mtr; +#ifdef UNIV_DEBUG + ut_ad(mtr_memo_contains(local_mtr, dict_index_get_lock(index), + MTR_MEMO_X_LOCK)); + ut_ad(mtr_memo_contains_page(local_mtr, field_ref, + MTR_MEMO_PAGE_X_FIX)); + ut_ad(!rec || rec_offs_validate(rec, index, offsets)); + + if (rec) { + ulint local_len; + const byte* f = rec_get_nth_field(rec, offsets, + i, &local_len); + ut_a(local_len >= BTR_EXTERN_FIELD_REF_SIZE); + local_len -= BTR_EXTERN_FIELD_REF_SIZE; + f += local_len; + ut_ad(f == field_ref); + } +#endif /* UNIV_DEBUG */ + + if (UNIV_UNLIKELY(!memcmp(field_ref, field_ref_zero, + BTR_EXTERN_FIELD_REF_SIZE))) { + /* In the rollback of uncommitted transactions, we may + encounter a clustered index record whose BLOBs have + not been written. There is nothing to free then. */ + ut_a(rb_ctx == RB_RECOVERY); + return; + } + + space_id = mach_read_from_4(field_ref + BTR_EXTERN_SPACE_ID); + + if (UNIV_UNLIKELY(space_id != dict_index_get_space(index))) { + ext_zip_size = fil_space_get_zip_size(space_id); + /* This must be an undo log record in the system tablespace, + that is, in row_purge_upd_exist_or_extern(). + Currently, externally stored records are stored in the + same tablespace as the referring records. */ + ut_ad(!page_get_space_id(page_align(field_ref))); + ut_ad(!rec); + ut_ad(!page_zip); + } else { + ext_zip_size = rec_zip_size; + } + + if (!rec) { + /* This is a call from row_purge_upd_exist_or_extern(). */ + ut_ad(!page_zip); + rec_zip_size = 0; + } + + for (;;) { + buf_block_t* rec_block; + buf_block_t* ext_block; + + mtr_start(&mtr); + + rec_block = buf_page_get(page_get_space_id( + page_align(field_ref)), + rec_zip_size, + page_get_page_no( + page_align(field_ref)), + RW_X_LATCH, &mtr); + buf_block_dbg_add_level(rec_block, SYNC_NO_ORDER_CHECK); + page_no = mach_read_from_4(field_ref + BTR_EXTERN_PAGE_NO); + + if (/* There is no external storage data */ + page_no == FIL_NULL + /* This field does not own the externally stored field */ + || (mach_read_from_1(field_ref + BTR_EXTERN_LEN) + & BTR_EXTERN_OWNER_FLAG) + /* Rollback and inherited field */ + || (rb_ctx != RB_NONE + && (mach_read_from_1(field_ref + BTR_EXTERN_LEN) + & BTR_EXTERN_INHERITED_FLAG))) { + + /* Do not free */ + mtr_commit(&mtr); + + return; + } + + ext_block = buf_page_get(space_id, ext_zip_size, page_no, + RW_X_LATCH, &mtr); + buf_block_dbg_add_level(ext_block, SYNC_EXTERN_STORAGE); + page = buf_block_get_frame(ext_block); + + if (ext_zip_size) { + /* Note that page_zip will be NULL + in row_purge_upd_exist_or_extern(). */ + switch (fil_page_get_type(page)) { + case FIL_PAGE_TYPE_ZBLOB: + case FIL_PAGE_TYPE_ZBLOB2: + break; + default: + ut_error; + } + next_page_no = mach_read_from_4(page + FIL_PAGE_NEXT); + + btr_page_free_low(index, ext_block, 0, &mtr); + + if (UNIV_LIKELY(page_zip != NULL)) { + mach_write_to_4(field_ref + BTR_EXTERN_PAGE_NO, + next_page_no); + mach_write_to_4(field_ref + BTR_EXTERN_LEN + 4, + 0); + page_zip_write_blob_ptr(page_zip, rec, index, + offsets, i, &mtr); + } else { + mlog_write_ulint(field_ref + + BTR_EXTERN_PAGE_NO, + next_page_no, + MLOG_4BYTES, &mtr); + mlog_write_ulint(field_ref + + BTR_EXTERN_LEN + 4, 0, + MLOG_4BYTES, &mtr); + } + } else { + ut_a(!page_zip); + btr_check_blob_fil_page_type(space_id, page_no, page, + FALSE); + + next_page_no = mach_read_from_4( + page + FIL_PAGE_DATA + + BTR_BLOB_HDR_NEXT_PAGE_NO); + + /* We must supply the page level (= 0) as an argument + because we did not store it on the page (we save the + space overhead from an index page header. */ + + btr_page_free_low(index, ext_block, 0, &mtr); + + mlog_write_ulint(field_ref + BTR_EXTERN_PAGE_NO, + next_page_no, + MLOG_4BYTES, &mtr); + /* Zero out the BLOB length. If the server + crashes during the execution of this function, + trx_rollback_or_clean_all_recovered() could + dereference the half-deleted BLOB, fetching a + wrong prefix for the BLOB. */ + mlog_write_ulint(field_ref + BTR_EXTERN_LEN + 4, + 0, + MLOG_4BYTES, &mtr); + } + + /* Commit mtr and release the BLOB block to save memory. */ + btr_blob_free(ext_block, TRUE, &mtr); + } +} + +/*************************************************************** +Frees the externally stored fields for a record. */ +static +void +btr_rec_free_externally_stored_fields( +/*==================================*/ + dict_index_t* index, /* in: index of the data, the index + tree MUST be X-latched */ + rec_t* rec, /* in/out: record */ + const ulint* offsets,/* in: rec_get_offsets(rec, index) */ + page_zip_des_t* page_zip,/* in: compressed page whose uncompressed + part will be updated, or NULL */ + enum trx_rb_ctx rb_ctx, /* in: rollback context */ + mtr_t* mtr) /* in: mini-transaction handle which contains + an X-latch to record page and to the index + tree */ +{ + ulint n_fields; + ulint i; + + ut_ad(rec_offs_validate(rec, index, offsets)); + ut_ad(mtr_memo_contains_page(mtr, rec, MTR_MEMO_PAGE_X_FIX)); + /* Free possible externally stored fields in the record */ + + ut_ad(dict_table_is_comp(index->table) == !!rec_offs_comp(offsets)); + n_fields = rec_offs_n_fields(offsets); + + for (i = 0; i < n_fields; i++) { + if (rec_offs_nth_extern(offsets, i)) { + ulint len; + byte* data + = rec_get_nth_field(rec, offsets, i, &len); + ut_a(len >= BTR_EXTERN_FIELD_REF_SIZE); + + btr_free_externally_stored_field( + index, data + len - BTR_EXTERN_FIELD_REF_SIZE, + rec, offsets, page_zip, i, rb_ctx, mtr); + } + } +} + +/*************************************************************** +Frees the externally stored fields for a record, if the field is mentioned +in the update vector. */ +static +void +btr_rec_free_updated_extern_fields( +/*===============================*/ + dict_index_t* index, /* in: index of rec; the index tree MUST be + X-latched */ + rec_t* rec, /* in/out: record */ + page_zip_des_t* page_zip,/* in: compressed page whose uncompressed + part will be updated, or NULL */ + const ulint* offsets,/* in: rec_get_offsets(rec, index) */ + const upd_t* update, /* in: update vector */ + enum trx_rb_ctx rb_ctx, /* in: rollback context */ + mtr_t* mtr) /* in: mini-transaction handle which contains + an X-latch to record page and to the tree */ +{ + ulint n_fields; + ulint i; + + ut_ad(rec_offs_validate(rec, index, offsets)); + ut_ad(mtr_memo_contains_page(mtr, rec, MTR_MEMO_PAGE_X_FIX)); + + /* Free possible externally stored fields in the record */ + + n_fields = upd_get_n_fields(update); + + for (i = 0; i < n_fields; i++) { + const upd_field_t* ufield = upd_get_nth_field(update, i); + + if (rec_offs_nth_extern(offsets, ufield->field_no)) { + ulint len; + byte* data = rec_get_nth_field( + rec, offsets, ufield->field_no, &len); + ut_a(len >= BTR_EXTERN_FIELD_REF_SIZE); + + btr_free_externally_stored_field( + index, data + len - BTR_EXTERN_FIELD_REF_SIZE, + rec, offsets, page_zip, + ufield->field_no, rb_ctx, mtr); + } + } +} + +/*********************************************************************** +Copies the prefix of an uncompressed BLOB. The clustered index record +that points to this BLOB must be protected by a lock or a page latch. */ +static +ulint +btr_copy_blob_prefix( +/*=================*/ + /* out: number of bytes written to buf */ + byte* buf, /* out: the externally stored part of + the field, or a prefix of it */ + ulint len, /* in: length of buf, in bytes */ + ulint space_id,/* in: space id of the BLOB pages */ + ulint page_no,/* in: page number of the first BLOB page */ + ulint offset) /* in: offset on the first BLOB page */ +{ + ulint copied_len = 0; + + for (;;) { + mtr_t mtr; + buf_block_t* block; + const page_t* page; + const byte* blob_header; + ulint part_len; + ulint copy_len; + + mtr_start(&mtr); + + block = buf_page_get(space_id, 0, page_no, RW_S_LATCH, &mtr); + buf_block_dbg_add_level(block, SYNC_EXTERN_STORAGE); + page = buf_block_get_frame(block); + + btr_check_blob_fil_page_type(space_id, page_no, page, TRUE); + + blob_header = page + offset; + part_len = btr_blob_get_part_len(blob_header); + copy_len = ut_min(part_len, len - copied_len); + + memcpy(buf + copied_len, + blob_header + BTR_BLOB_HDR_SIZE, copy_len); + copied_len += copy_len; + + page_no = btr_blob_get_next_page_no(blob_header); + + mtr_commit(&mtr); + + if (page_no == FIL_NULL || copy_len != part_len) { + return(copied_len); + } + + /* On other BLOB pages except the first the BLOB header + always is at the page data start: */ + + offset = FIL_PAGE_DATA; + + ut_ad(copied_len <= len); + } +} + +/*********************************************************************** +Copies the prefix of a compressed BLOB. The clustered index record +that points to this BLOB must be protected by a lock or a page latch. */ +static +void +btr_copy_zblob_prefix( +/*==================*/ + z_stream* d_stream,/* in/out: the decompressing stream */ + ulint zip_size,/* in: compressed BLOB page size */ + ulint space_id,/* in: space id of the BLOB pages */ + ulint page_no,/* in: page number of the first BLOB page */ + ulint offset) /* in: offset on the first BLOB page */ +{ + ulint page_type = FIL_PAGE_TYPE_ZBLOB; + + ut_ad(ut_is_2pow(zip_size)); + ut_ad(zip_size >= PAGE_ZIP_MIN_SIZE); + ut_ad(zip_size <= UNIV_PAGE_SIZE); + ut_ad(space_id); + + for (;;) { + buf_page_t* bpage; + int err; + ulint next_page_no; + + /* There is no latch on bpage directly. Instead, + bpage is protected by the B-tree page latch that + is being held on the clustered index record, or, + in row_merge_copy_blobs(), by an exclusive table lock. */ + bpage = buf_page_get_zip(space_id, zip_size, page_no); + + if (UNIV_UNLIKELY(!bpage)) { + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: Cannot load" + " compressed BLOB" + " page %lu space %lu\n", + (ulong) page_no, (ulong) space_id); + return; + } + + if (UNIV_UNLIKELY + (fil_page_get_type(bpage->zip.data) != page_type)) { + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: Unexpected type %lu of" + " compressed BLOB" + " page %lu space %lu\n", + (ulong) fil_page_get_type(bpage->zip.data), + (ulong) page_no, (ulong) space_id); + goto end_of_blob; + } + + next_page_no = mach_read_from_4(bpage->zip.data + offset); + + if (UNIV_LIKELY(offset == FIL_PAGE_NEXT)) { + /* When the BLOB begins at page header, + the compressed data payload does not + immediately follow the next page pointer. */ + offset = FIL_PAGE_DATA; + } else { + offset += 4; + } + + d_stream->next_in = bpage->zip.data + offset; + d_stream->avail_in = zip_size - offset; + + err = inflate(d_stream, Z_NO_FLUSH); + switch (err) { + case Z_OK: + if (!d_stream->avail_out) { + goto end_of_blob; + } + break; + case Z_STREAM_END: + if (next_page_no == FIL_NULL) { + goto end_of_blob; + } + /* fall through */ + default: +inflate_error: + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: inflate() of" + " compressed BLOB" + " page %lu space %lu returned %d (%s)\n", + (ulong) page_no, (ulong) space_id, + err, d_stream->msg); + case Z_BUF_ERROR: + goto end_of_blob; + } + + if (next_page_no == FIL_NULL) { + if (!d_stream->avail_in) { + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: unexpected end of" + " compressed BLOB" + " page %lu space %lu\n", + (ulong) page_no, + (ulong) space_id); + } else { + err = inflate(d_stream, Z_FINISH); + switch (err) { + case Z_STREAM_END: + case Z_BUF_ERROR: + break; + default: + goto inflate_error; + } + } + +end_of_blob: + buf_page_release_zip(bpage); + return; + } + + buf_page_release_zip(bpage); + + /* On other BLOB pages except the first + the BLOB header always is at the page header: */ + + page_no = next_page_no; + offset = FIL_PAGE_NEXT; + page_type = FIL_PAGE_TYPE_ZBLOB2; + } +} + +/*********************************************************************** +Copies the prefix of an externally stored field of a record. The +clustered index record that points to this BLOB must be protected by a +lock or a page latch. */ +static +ulint +btr_copy_externally_stored_field_prefix_low( +/*========================================*/ + /* out: number of bytes written to buf */ + byte* buf, /* out: the externally stored part of + the field, or a prefix of it */ + ulint len, /* in: length of buf, in bytes */ + ulint zip_size,/* in: nonzero=compressed BLOB page size, + zero for uncompressed BLOBs */ + ulint space_id,/* in: space id of the first BLOB page */ + ulint page_no,/* in: page number of the first BLOB page */ + ulint offset) /* in: offset on the first BLOB page */ +{ + if (UNIV_UNLIKELY(len == 0)) { + return(0); + } + + if (UNIV_UNLIKELY(zip_size)) { + int err; + z_stream d_stream; + mem_heap_t* heap; + + /* Zlib inflate needs 32 kilobytes for the default + window size, plus a few kilobytes for small objects. */ + heap = mem_heap_create(40000); + page_zip_set_alloc(&d_stream, heap); + + err = inflateInit(&d_stream); + ut_a(err == Z_OK); + + d_stream.next_out = buf; + d_stream.avail_out = len; + d_stream.avail_in = 0; + + btr_copy_zblob_prefix(&d_stream, zip_size, + space_id, page_no, offset); + inflateEnd(&d_stream); + mem_heap_free(heap); + return(d_stream.total_out); + } else { + return(btr_copy_blob_prefix(buf, len, space_id, + page_no, offset)); + } +} + +/*********************************************************************** +Copies the prefix of an externally stored field of a record. The +clustered index record must be protected by a lock or a page latch. */ +UNIV_INTERN +ulint +btr_copy_externally_stored_field_prefix( +/*====================================*/ + /* out: the length of the copied field, + or 0 if the column was being or has been + deleted */ + byte* buf, /* out: the field, or a prefix of it */ + ulint len, /* in: length of buf, in bytes */ + ulint zip_size,/* in: nonzero=compressed BLOB page size, + zero for uncompressed BLOBs */ + const byte* data, /* in: 'internally' stored part of the + field containing also the reference to + the external part; must be protected by + a lock or a page latch */ + ulint local_len)/* in: length of data, in bytes */ +{ + ulint space_id; + ulint page_no; + ulint offset; + + ut_a(local_len >= BTR_EXTERN_FIELD_REF_SIZE); + + local_len -= BTR_EXTERN_FIELD_REF_SIZE; + + if (UNIV_UNLIKELY(local_len >= len)) { + memcpy(buf, data, len); + return(len); + } + + memcpy(buf, data, local_len); + data += local_len; + + ut_a(memcmp(data, field_ref_zero, BTR_EXTERN_FIELD_REF_SIZE)); + + if (!mach_read_from_4(data + BTR_EXTERN_LEN + 4)) { + /* The externally stored part of the column has been + (partially) deleted. Signal the half-deleted BLOB + to the caller. */ + + return(0); + } + + space_id = mach_read_from_4(data + BTR_EXTERN_SPACE_ID); + + page_no = mach_read_from_4(data + BTR_EXTERN_PAGE_NO); + + offset = mach_read_from_4(data + BTR_EXTERN_OFFSET); + + return(local_len + + btr_copy_externally_stored_field_prefix_low(buf + local_len, + len - local_len, + zip_size, + space_id, page_no, + offset)); +} + +/*********************************************************************** +Copies an externally stored field of a record to mem heap. The +clustered index record must be protected by a lock or a page latch. */ +static +byte* +btr_copy_externally_stored_field( +/*=============================*/ + /* out: the whole field copied to heap */ + ulint* len, /* out: length of the whole field */ + const byte* data, /* in: 'internally' stored part of the + field containing also the reference to + the external part; must be protected by + a lock or a page latch */ + ulint zip_size,/* in: nonzero=compressed BLOB page size, + zero for uncompressed BLOBs */ + ulint local_len,/* in: length of data */ + mem_heap_t* heap) /* in: mem heap */ +{ + ulint space_id; + ulint page_no; + ulint offset; + ulint extern_len; + byte* buf; + + ut_a(local_len >= BTR_EXTERN_FIELD_REF_SIZE); + + local_len -= BTR_EXTERN_FIELD_REF_SIZE; + + space_id = mach_read_from_4(data + local_len + BTR_EXTERN_SPACE_ID); + + page_no = mach_read_from_4(data + local_len + BTR_EXTERN_PAGE_NO); + + offset = mach_read_from_4(data + local_len + BTR_EXTERN_OFFSET); + + /* Currently a BLOB cannot be bigger than 4 GB; we + leave the 4 upper bytes in the length field unused */ + + extern_len = mach_read_from_4(data + local_len + BTR_EXTERN_LEN + 4); + + buf = mem_heap_alloc(heap, local_len + extern_len); + + memcpy(buf, data, local_len); + *len = local_len + + btr_copy_externally_stored_field_prefix_low(buf + local_len, + extern_len, + zip_size, + space_id, + page_no, offset); + + return(buf); +} + +/*********************************************************************** +Copies an externally stored field of a record to mem heap. */ +UNIV_INTERN +byte* +btr_rec_copy_externally_stored_field( +/*=================================*/ + /* out: the field copied to heap */ + const rec_t* rec, /* in: record in a clustered index; + must be protected by a lock or a page latch */ + const ulint* offsets,/* in: array returned by rec_get_offsets() */ + ulint zip_size,/* in: nonzero=compressed BLOB page size, + zero for uncompressed BLOBs */ + ulint no, /* in: field number */ + ulint* len, /* out: length of the field */ + mem_heap_t* heap) /* in: mem heap */ +{ + ulint local_len; + const byte* data; + + ut_a(rec_offs_nth_extern(offsets, no)); + + /* An externally stored field can contain some initial + data from the field, and in the last 20 bytes it has the + space id, page number, and offset where the rest of the + field data is stored, and the data length in addition to + the data stored locally. We may need to store some data + locally to get the local record length above the 128 byte + limit so that field offsets are stored in two bytes, and + the extern bit is available in those two bytes. */ + + data = rec_get_nth_field(rec, offsets, no, &local_len); + + return(btr_copy_externally_stored_field(len, data, + zip_size, local_len, heap)); +} === added file 'storage/xtradb/btr/btr0pcur.c' --- a/storage/xtradb/btr/btr0pcur.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/btr/btr0pcur.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,584 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +The index tree persistent cursor + +Created 2/23/1996 Heikki Tuuri +*******************************************************/ + +#include "btr0pcur.h" + +#ifdef UNIV_NONINL +#include "btr0pcur.ic" +#endif + +#include "ut0byte.h" +#include "rem0cmp.h" +#include "trx0trx.h" + +/****************************************************************** +Allocates memory for a persistent cursor object and initializes the cursor. */ +UNIV_INTERN +btr_pcur_t* +btr_pcur_create_for_mysql(void) +/*============================*/ + /* out, own: persistent cursor */ +{ + btr_pcur_t* pcur; + + pcur = mem_alloc(sizeof(btr_pcur_t)); + + pcur->btr_cur.index = NULL; + btr_pcur_init(pcur); + + return(pcur); +} + +/****************************************************************** +Frees the memory for a persistent cursor object. */ +UNIV_INTERN +void +btr_pcur_free_for_mysql( +/*====================*/ + btr_pcur_t* cursor) /* in, own: persistent cursor */ +{ + if (cursor->old_rec_buf != NULL) { + + mem_free(cursor->old_rec_buf); + + cursor->old_rec_buf = NULL; + } + + cursor->btr_cur.page_cur.rec = NULL; + cursor->old_rec = NULL; + cursor->old_n_fields = 0; + cursor->old_stored = BTR_PCUR_OLD_NOT_STORED; + + cursor->latch_mode = BTR_NO_LATCHES; + cursor->pos_state = BTR_PCUR_NOT_POSITIONED; + + mem_free(cursor); +} + +/****************************************************************** +The position of the cursor is stored by taking an initial segment of the +record the cursor is positioned on, before, or after, and copying it to the +cursor data structure, or just setting a flag if the cursor id before the +first in an EMPTY tree, or after the last in an EMPTY tree. NOTE that the +page where the cursor is positioned must not be empty if the index tree is +not totally empty! */ +UNIV_INTERN +void +btr_pcur_store_position( +/*====================*/ + btr_pcur_t* cursor, /* in: persistent cursor */ + mtr_t* mtr) /* in: mtr */ +{ + page_cur_t* page_cursor; + buf_block_t* block; + rec_t* rec; + dict_index_t* index; + page_t* page; + ulint offs; + + ut_a(cursor->pos_state == BTR_PCUR_IS_POSITIONED); + ut_ad(cursor->latch_mode != BTR_NO_LATCHES); + + block = btr_pcur_get_block(cursor); + index = btr_cur_get_index(btr_pcur_get_btr_cur(cursor)); + + page_cursor = btr_pcur_get_page_cur(cursor); + + rec = page_cur_get_rec(page_cursor); + page = page_align(rec); + offs = page_offset(rec); + + ut_ad(mtr_memo_contains(mtr, block, MTR_MEMO_PAGE_S_FIX) + || mtr_memo_contains(mtr, block, MTR_MEMO_PAGE_X_FIX)); + ut_a(cursor->latch_mode != BTR_NO_LATCHES); + + if (UNIV_UNLIKELY(page_get_n_recs(page) == 0)) { + /* It must be an empty index tree; NOTE that in this case + we do not store the modify_clock, but always do a search + if we restore the cursor position */ + + ut_a(btr_page_get_next(page, mtr) == FIL_NULL); + ut_a(btr_page_get_prev(page, mtr) == FIL_NULL); + + cursor->old_stored = BTR_PCUR_OLD_STORED; + + if (page_rec_is_supremum_low(offs)) { + + cursor->rel_pos = BTR_PCUR_AFTER_LAST_IN_TREE; + } else { + cursor->rel_pos = BTR_PCUR_BEFORE_FIRST_IN_TREE; + } + + return; + } + + if (page_rec_is_supremum_low(offs)) { + + rec = page_rec_get_prev(rec); + + cursor->rel_pos = BTR_PCUR_AFTER; + + } else if (page_rec_is_infimum_low(offs)) { + + rec = page_rec_get_next(rec); + + cursor->rel_pos = BTR_PCUR_BEFORE; + } else { + cursor->rel_pos = BTR_PCUR_ON; + } + + cursor->old_stored = BTR_PCUR_OLD_STORED; + cursor->old_rec = dict_index_copy_rec_order_prefix( + index, rec, &cursor->old_n_fields, + &cursor->old_rec_buf, &cursor->buf_size); + + cursor->block_when_stored = block; + cursor->modify_clock = buf_block_get_modify_clock(block); +} + +/****************************************************************** +Copies the stored position of a pcur to another pcur. */ +UNIV_INTERN +void +btr_pcur_copy_stored_position( +/*==========================*/ + btr_pcur_t* pcur_receive, /* in: pcur which will receive the + position info */ + btr_pcur_t* pcur_donate) /* in: pcur from which the info is + copied */ +{ + if (pcur_receive->old_rec_buf) { + mem_free(pcur_receive->old_rec_buf); + } + + ut_memcpy(pcur_receive, pcur_donate, sizeof(btr_pcur_t)); + + if (pcur_donate->old_rec_buf) { + + pcur_receive->old_rec_buf = mem_alloc(pcur_donate->buf_size); + + ut_memcpy(pcur_receive->old_rec_buf, pcur_donate->old_rec_buf, + pcur_donate->buf_size); + pcur_receive->old_rec = pcur_receive->old_rec_buf + + (pcur_donate->old_rec - pcur_donate->old_rec_buf); + } + + pcur_receive->old_n_fields = pcur_donate->old_n_fields; +} + +/****************************************************************** +Restores the stored position of a persistent cursor bufferfixing the page and +obtaining the specified latches. If the cursor position was saved when the +(1) cursor was positioned on a user record: this function restores the position +to the last record LESS OR EQUAL to the stored record; +(2) cursor was positioned on a page infimum record: restores the position to +the last record LESS than the user record which was the successor of the page +infimum; +(3) cursor was positioned on the page supremum: restores to the first record +GREATER than the user record which was the predecessor of the supremum. +(4) cursor was positioned before the first or after the last in an empty tree: +restores to before first or after the last in the tree. */ +UNIV_INTERN +ibool +btr_pcur_restore_position( +/*======================*/ + /* out: TRUE if the cursor position + was stored when it was on a user record + and it can be restored on a user record + whose ordering fields are identical to + the ones of the original user record */ + ulint latch_mode, /* in: BTR_SEARCH_LEAF, ... */ + btr_pcur_t* cursor, /* in: detached persistent cursor */ + mtr_t* mtr) /* in: mtr */ +{ + dict_index_t* index; + dtuple_t* tuple; + ulint mode; + ulint old_mode; + mem_heap_t* heap; + + index = btr_cur_get_index(btr_pcur_get_btr_cur(cursor)); + + if (UNIV_UNLIKELY(cursor->old_stored != BTR_PCUR_OLD_STORED) + || UNIV_UNLIKELY(cursor->pos_state != BTR_PCUR_WAS_POSITIONED + && cursor->pos_state != BTR_PCUR_IS_POSITIONED)) { + ut_print_buf(stderr, cursor, sizeof(btr_pcur_t)); + putc('\n', stderr); + if (cursor->trx_if_known) { + trx_print(stderr, cursor->trx_if_known, 0); + } + + ut_error; + } + + if (UNIV_UNLIKELY + (cursor->rel_pos == BTR_PCUR_AFTER_LAST_IN_TREE + || cursor->rel_pos == BTR_PCUR_BEFORE_FIRST_IN_TREE)) { + + /* In these cases we do not try an optimistic restoration, + but always do a search */ + + btr_cur_open_at_index_side( + cursor->rel_pos == BTR_PCUR_BEFORE_FIRST_IN_TREE, + index, latch_mode, btr_pcur_get_btr_cur(cursor), mtr); + + cursor->block_when_stored = btr_pcur_get_block(cursor); + + return(FALSE); + } + + ut_a(cursor->old_rec); + ut_a(cursor->old_n_fields); + + if (UNIV_LIKELY(latch_mode == BTR_SEARCH_LEAF) + || UNIV_LIKELY(latch_mode == BTR_MODIFY_LEAF)) { + /* Try optimistic restoration */ + + if (UNIV_LIKELY(buf_page_optimistic_get( + latch_mode, + cursor->block_when_stored, + cursor->modify_clock, mtr))) { + cursor->pos_state = BTR_PCUR_IS_POSITIONED; + + buf_block_dbg_add_level(btr_pcur_get_block(cursor), + SYNC_TREE_NODE); + + if (cursor->rel_pos == BTR_PCUR_ON) { +#ifdef UNIV_DEBUG + const rec_t* rec; + const ulint* offsets1; + const ulint* offsets2; +#endif /* UNIV_DEBUG */ + cursor->latch_mode = latch_mode; +#ifdef UNIV_DEBUG + rec = btr_pcur_get_rec(cursor); + + heap = mem_heap_create(256); + offsets1 = rec_get_offsets( + cursor->old_rec, index, NULL, + cursor->old_n_fields, &heap); + offsets2 = rec_get_offsets( + rec, index, NULL, + cursor->old_n_fields, &heap); + + ut_ad(!cmp_rec_rec(cursor->old_rec, + rec, offsets1, offsets2, + index)); + mem_heap_free(heap); +#endif /* UNIV_DEBUG */ + return(TRUE); + } + + return(FALSE); + } + } + + /* If optimistic restoration did not succeed, open the cursor anew */ + + heap = mem_heap_create(256); + + tuple = dict_index_build_data_tuple(index, cursor->old_rec, + cursor->old_n_fields, heap); + + /* Save the old search mode of the cursor */ + old_mode = cursor->search_mode; + + if (UNIV_LIKELY(cursor->rel_pos == BTR_PCUR_ON)) { + mode = PAGE_CUR_LE; + } else if (cursor->rel_pos == BTR_PCUR_AFTER) { + mode = PAGE_CUR_G; + } else { + ut_ad(cursor->rel_pos == BTR_PCUR_BEFORE); + mode = PAGE_CUR_L; + } + + btr_pcur_open_with_no_init(index, tuple, mode, latch_mode, + cursor, 0, mtr); + + /* Restore the old search mode */ + cursor->search_mode = old_mode; + + if (cursor->rel_pos == BTR_PCUR_ON + && btr_pcur_is_on_user_rec(cursor) + && 0 == cmp_dtuple_rec(tuple, btr_pcur_get_rec(cursor), + rec_get_offsets( + btr_pcur_get_rec(cursor), index, + NULL, ULINT_UNDEFINED, &heap))) { + + /* We have to store the NEW value for the modify clock, since + the cursor can now be on a different page! But we can retain + the value of old_rec */ + + cursor->block_when_stored = btr_pcur_get_block(cursor); + cursor->modify_clock = buf_block_get_modify_clock( + cursor->block_when_stored); + cursor->old_stored = BTR_PCUR_OLD_STORED; + + mem_heap_free(heap); + + return(TRUE); + } + + mem_heap_free(heap); + + /* We have to store new position information, modify_clock etc., + to the cursor because it can now be on a different page, the record + under it may have been removed, etc. */ + + btr_pcur_store_position(cursor, mtr); + + return(FALSE); +} + +/****************************************************************** +If the latch mode of the cursor is BTR_LEAF_SEARCH or BTR_LEAF_MODIFY, +releases the page latch and bufferfix reserved by the cursor. +NOTE! In the case of BTR_LEAF_MODIFY, there should not exist changes +made by the current mini-transaction to the data protected by the +cursor latch, as then the latch must not be released until mtr_commit. */ +UNIV_INTERN +void +btr_pcur_release_leaf( +/*==================*/ + btr_pcur_t* cursor, /* in: persistent cursor */ + mtr_t* mtr) /* in: mtr */ +{ + buf_block_t* block; + + ut_a(cursor->pos_state == BTR_PCUR_IS_POSITIONED); + ut_ad(cursor->latch_mode != BTR_NO_LATCHES); + + block = btr_pcur_get_block(cursor); + + btr_leaf_page_release(block, cursor->latch_mode, mtr); + + cursor->latch_mode = BTR_NO_LATCHES; + + cursor->pos_state = BTR_PCUR_WAS_POSITIONED; +} + +/************************************************************* +Moves the persistent cursor to the first record on the next page. Releases the +latch on the current page, and bufferunfixes it. Note that there must not be +modifications on the current page, as then the x-latch can be released only in +mtr_commit. */ +UNIV_INTERN +void +btr_pcur_move_to_next_page( +/*=======================*/ + btr_pcur_t* cursor, /* in: persistent cursor; must be on the + last record of the current page */ + mtr_t* mtr) /* in: mtr */ +{ + ulint next_page_no; + ulint space; + ulint zip_size; + page_t* page; + buf_block_t* next_block; + page_t* next_page; + + ut_a(cursor->pos_state == BTR_PCUR_IS_POSITIONED); + ut_ad(cursor->latch_mode != BTR_NO_LATCHES); + ut_ad(btr_pcur_is_after_last_on_page(cursor)); + + cursor->old_stored = BTR_PCUR_OLD_NOT_STORED; + + page = btr_pcur_get_page(cursor); + next_page_no = btr_page_get_next(page, mtr); + space = buf_block_get_space(btr_pcur_get_block(cursor)); + zip_size = buf_block_get_zip_size(btr_pcur_get_block(cursor)); + + ut_ad(next_page_no != FIL_NULL); + + next_block = btr_block_get(space, zip_size, next_page_no, + cursor->latch_mode, mtr); + next_page = buf_block_get_frame(next_block); +#ifdef UNIV_BTR_DEBUG + ut_a(page_is_comp(next_page) == page_is_comp(page)); + ut_a(btr_page_get_prev(next_page, mtr) + == buf_block_get_page_no(btr_pcur_get_block(cursor))); +#endif /* UNIV_BTR_DEBUG */ + next_block->check_index_page_at_flush = TRUE; + + btr_leaf_page_release(btr_pcur_get_block(cursor), + cursor->latch_mode, mtr); + + page_cur_set_before_first(next_block, btr_pcur_get_page_cur(cursor)); + + page_check_dir(next_page); +} + +/************************************************************* +Moves the persistent cursor backward if it is on the first record of the page. +Commits mtr. Note that to prevent a possible deadlock, the operation +first stores the position of the cursor, commits mtr, acquires the necessary +latches and restores the cursor position again before returning. The +alphabetical position of the cursor is guaranteed to be sensible on +return, but it may happen that the cursor is not positioned on the last +record of any page, because the structure of the tree may have changed +during the time when the cursor had no latches. */ +UNIV_INTERN +void +btr_pcur_move_backward_from_page( +/*=============================*/ + btr_pcur_t* cursor, /* in: persistent cursor, must be on the first + record of the current page */ + mtr_t* mtr) /* in: mtr */ +{ + ulint prev_page_no; + ulint space; + page_t* page; + buf_block_t* prev_block; + ulint latch_mode; + ulint latch_mode2; + + ut_a(cursor->pos_state == BTR_PCUR_IS_POSITIONED); + ut_ad(cursor->latch_mode != BTR_NO_LATCHES); + ut_ad(btr_pcur_is_before_first_on_page(cursor)); + ut_ad(!btr_pcur_is_before_first_in_tree(cursor, mtr)); + + latch_mode = cursor->latch_mode; + + if (latch_mode == BTR_SEARCH_LEAF) { + + latch_mode2 = BTR_SEARCH_PREV; + + } else if (latch_mode == BTR_MODIFY_LEAF) { + + latch_mode2 = BTR_MODIFY_PREV; + } else { + latch_mode2 = 0; /* To eliminate compiler warning */ + ut_error; + } + + btr_pcur_store_position(cursor, mtr); + + mtr_commit(mtr); + + mtr_start(mtr); + + btr_pcur_restore_position(latch_mode2, cursor, mtr); + + page = btr_pcur_get_page(cursor); + + prev_page_no = btr_page_get_prev(page, mtr); + space = buf_block_get_space(btr_pcur_get_block(cursor)); + + if (prev_page_no == FIL_NULL) { + } else if (btr_pcur_is_before_first_on_page(cursor)) { + + prev_block = btr_pcur_get_btr_cur(cursor)->left_block; + + btr_leaf_page_release(btr_pcur_get_block(cursor), + latch_mode, mtr); + + page_cur_set_after_last(prev_block, + btr_pcur_get_page_cur(cursor)); + } else { + + /* The repositioned cursor did not end on an infimum record on + a page. Cursor repositioning acquired a latch also on the + previous page, but we do not need the latch: release it. */ + + prev_block = btr_pcur_get_btr_cur(cursor)->left_block; + + btr_leaf_page_release(prev_block, latch_mode, mtr); + } + + cursor->latch_mode = latch_mode; + + cursor->old_stored = BTR_PCUR_OLD_NOT_STORED; +} + +/************************************************************* +Moves the persistent cursor to the previous record in the tree. If no records +are left, the cursor stays 'before first in tree'. */ +UNIV_INTERN +ibool +btr_pcur_move_to_prev( +/*==================*/ + /* out: TRUE if the cursor was not before first + in tree */ + btr_pcur_t* cursor, /* in: persistent cursor; NOTE that the + function may release the page latch */ + mtr_t* mtr) /* in: mtr */ +{ + ut_ad(cursor->pos_state == BTR_PCUR_IS_POSITIONED); + ut_ad(cursor->latch_mode != BTR_NO_LATCHES); + + cursor->old_stored = BTR_PCUR_OLD_NOT_STORED; + + if (btr_pcur_is_before_first_on_page(cursor)) { + + if (btr_pcur_is_before_first_in_tree(cursor, mtr)) { + + return(FALSE); + } + + btr_pcur_move_backward_from_page(cursor, mtr); + + return(TRUE); + } + + btr_pcur_move_to_prev_on_page(cursor); + + return(TRUE); +} + +/****************************************************************** +If mode is PAGE_CUR_G or PAGE_CUR_GE, opens a persistent cursor on the first +user record satisfying the search condition, in the case PAGE_CUR_L or +PAGE_CUR_LE, on the last user record. If no such user record exists, then +in the first case sets the cursor after last in tree, and in the latter case +before first in tree. The latching mode must be BTR_SEARCH_LEAF or +BTR_MODIFY_LEAF. */ +UNIV_INTERN +void +btr_pcur_open_on_user_rec( +/*======================*/ + dict_index_t* index, /* in: index */ + const dtuple_t* tuple, /* in: tuple on which search done */ + ulint mode, /* in: PAGE_CUR_L, ... */ + ulint latch_mode, /* in: BTR_SEARCH_LEAF or + BTR_MODIFY_LEAF */ + btr_pcur_t* cursor, /* in: memory buffer for persistent + cursor */ + mtr_t* mtr) /* in: mtr */ +{ + btr_pcur_open(index, tuple, mode, latch_mode, cursor, mtr); + + if ((mode == PAGE_CUR_GE) || (mode == PAGE_CUR_G)) { + + if (btr_pcur_is_after_last_on_page(cursor)) { + + btr_pcur_move_to_next_user_rec(cursor, mtr); + } + } else { + ut_ad((mode == PAGE_CUR_LE) || (mode == PAGE_CUR_L)); + + /* Not implemented yet */ + + ut_error; + } +} === added file 'storage/xtradb/btr/btr0sea.c' --- a/storage/xtradb/btr/btr0sea.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/btr/btr0sea.c 2009-05-04 02:45:47 +0000 @@ -0,0 +1,1872 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. +Copyright (c) 2008, Google Inc. + +Portions of this file contain modifications contributed and copyrighted by +Google, Inc. Those modifications are gratefully acknowledged and are described +briefly in the InnoDB documentation. The contributions by Google are +incorporated with their permission, and subject to the conditions contained in +the file COPYING.Google. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/************************************************************************ +The index tree adaptive search + +Created 2/17/1996 Heikki Tuuri +*************************************************************************/ + +#include "btr0sea.h" +#ifdef UNIV_NONINL +#include "btr0sea.ic" +#endif + +#include "buf0buf.h" +#include "page0page.h" +#include "page0cur.h" +#include "btr0cur.h" +#include "btr0pcur.h" +#include "btr0btr.h" +#include "ha0ha.h" + +/* Flag: has the search system been enabled? +Protected by btr_search_latch and btr_search_enabled_mutex. */ +UNIV_INTERN char btr_search_enabled = TRUE; + +static mutex_t btr_search_enabled_mutex; + +/* A dummy variable to fool the compiler */ +UNIV_INTERN ulint btr_search_this_is_zero = 0; + +#ifdef UNIV_SEARCH_PERF_STAT +UNIV_INTERN ulint btr_search_n_succ = 0; +UNIV_INTERN ulint btr_search_n_hash_fail = 0; +#endif /* UNIV_SEARCH_PERF_STAT */ + +/* padding to prevent other memory update +hotspots from residing on the same memory +cache line as btr_search_latch */ +UNIV_INTERN byte btr_sea_pad1[64]; + +/* The latch protecting the adaptive search system: this latch protects the +(1) positions of records on those pages where a hash index has been built. +NOTE: It does not protect values of non-ordering fields within a record from +being updated in-place! We can use fact (1) to perform unique searches to +indexes. */ + +/* We will allocate the latch from dynamic memory to get it to the +same DRAM page as other hotspot semaphores */ +UNIV_INTERN rw_lock_t* btr_search_latch_temp; + +/* padding to prevent other memory update hotspots from residing on +the same memory cache line */ +UNIV_INTERN byte btr_sea_pad2[64]; + +UNIV_INTERN btr_search_sys_t* btr_search_sys; + +/* If the number of records on the page divided by this parameter +would have been successfully accessed using a hash index, the index +is then built on the page, assuming the global limit has been reached */ + +#define BTR_SEARCH_PAGE_BUILD_LIMIT 16 + +/* The global limit for consecutive potentially successful hash searches, +before hash index building is started */ + +#define BTR_SEARCH_BUILD_LIMIT 100 + +/************************************************************************ +Builds a hash index on a page with the given parameters. If the page already +has a hash index with different parameters, the old hash index is removed. +If index is non-NULL, this function checks if n_fields and n_bytes are +sensible values, and does not build a hash index if not. */ +static +void +btr_search_build_page_hash_index( +/*=============================*/ + dict_index_t* index, /* in: index for which to build, or NULL if + not known */ + buf_block_t* block, /* in: index page, s- or x-latched */ + ulint n_fields,/* in: hash this many full fields */ + ulint n_bytes,/* in: hash this many bytes from the next + field */ + ibool left_side);/* in: hash for searches from left side? */ + +/********************************************************************* +This function should be called before reserving any btr search mutex, if +the intended operation might add nodes to the search system hash table. +Because of the latching order, once we have reserved the btr search system +latch, we cannot allocate a free frame from the buffer pool. Checks that +there is a free buffer frame allocated for hash table heap in the btr search +system. If not, allocates a free frames for the heap. This check makes it +probable that, when have reserved the btr search system latch and we need to +allocate a new node to the hash table, it will succeed. However, the check +will not guarantee success. */ +static +void +btr_search_check_free_space_in_heap(void) +/*=====================================*/ +{ + hash_table_t* table; + mem_heap_t* heap; + +#ifdef UNIV_SYNC_DEBUG + ut_ad(!rw_lock_own(&btr_search_latch, RW_LOCK_SHARED)); + ut_ad(!rw_lock_own(&btr_search_latch, RW_LOCK_EX)); +#endif /* UNIV_SYNC_DEBUG */ + + table = btr_search_sys->hash_index; + + heap = table->heap; + + /* Note that we peek the value of heap->free_block without reserving + the latch: this is ok, because we will not guarantee that there will + be enough free space in the hash table. */ + + if (heap->free_block == NULL) { + buf_block_t* block = buf_block_alloc(0); + + rw_lock_x_lock(&btr_search_latch); + + if (heap->free_block == NULL) { + heap->free_block = block; + } else { + buf_block_free(block); + } + + rw_lock_x_unlock(&btr_search_latch); + } +} + +/********************************************************************* +Creates and initializes the adaptive search system at a database start. */ +UNIV_INTERN +void +btr_search_sys_create( +/*==================*/ + ulint hash_size) /* in: hash index hash table size */ +{ + /* We allocate the search latch from dynamic memory: + see above at the global variable definition */ + + btr_search_latch_temp = mem_alloc(sizeof(rw_lock_t)); + + rw_lock_create(&btr_search_latch, SYNC_SEARCH_SYS); + mutex_create(&btr_search_enabled_mutex, SYNC_SEARCH_SYS_CONF); + + btr_search_sys = mem_alloc(sizeof(btr_search_sys_t)); + + btr_search_sys->hash_index = ha_create(hash_size, 0, 0); +} + +/************************************************************************ +Disable the adaptive hash search system and empty the index. */ +UNIV_INTERN +void +btr_search_disable(void) +/*====================*/ +{ + mutex_enter(&btr_search_enabled_mutex); + rw_lock_x_lock(&btr_search_latch); + + btr_search_enabled = FALSE; + + /* Clear all block->is_hashed flags and remove all entries + from btr_search_sys->hash_index. */ + buf_pool_drop_hash_index(); + + /* btr_search_enabled_mutex should guarantee this. */ + ut_ad(!btr_search_enabled); + + rw_lock_x_unlock(&btr_search_latch); + mutex_exit(&btr_search_enabled_mutex); +} + +/************************************************************************ +Enable the adaptive hash search system. */ +UNIV_INTERN +void +btr_search_enable(void) +/*====================*/ +{ + mutex_enter(&btr_search_enabled_mutex); + rw_lock_x_lock(&btr_search_latch); + + btr_search_enabled = TRUE; + + rw_lock_x_unlock(&btr_search_latch); + mutex_exit(&btr_search_enabled_mutex); +} + +/********************************************************************* +Creates and initializes a search info struct. */ +UNIV_INTERN +btr_search_t* +btr_search_info_create( +/*===================*/ + /* out, own: search info struct */ + mem_heap_t* heap) /* in: heap where created */ +{ + btr_search_t* info; + + info = mem_heap_alloc(heap, sizeof(btr_search_t)); + +#ifdef UNIV_DEBUG + info->magic_n = BTR_SEARCH_MAGIC_N; +#endif /* UNIV_DEBUG */ + + info->ref_count = 0; + info->root_guess = NULL; + + info->hash_analysis = 0; + info->n_hash_potential = 0; + + info->last_hash_succ = FALSE; + +#ifdef UNIV_SEARCH_PERF_STAT + info->n_hash_succ = 0; + info->n_hash_fail = 0; + info->n_patt_succ = 0; + info->n_searches = 0; +#endif /* UNIV_SEARCH_PERF_STAT */ + + /* Set some sensible values */ + info->n_fields = 1; + info->n_bytes = 0; + + info->left_side = TRUE; + + return(info); +} + +/********************************************************************* +Returns the value of ref_count. The value is protected by +btr_search_latch. */ +UNIV_INTERN +ulint +btr_search_info_get_ref_count( +/*==========================*/ + /* out: ref_count value. */ + btr_search_t* info) /* in: search info. */ +{ + ulint ret; + + ut_ad(info); + +#ifdef UNIV_SYNC_DEBUG + ut_ad(!rw_lock_own(&btr_search_latch, RW_LOCK_SHARED)); + ut_ad(!rw_lock_own(&btr_search_latch, RW_LOCK_EX)); +#endif /* UNIV_SYNC_DEBUG */ + + rw_lock_s_lock(&btr_search_latch); + ret = info->ref_count; + rw_lock_s_unlock(&btr_search_latch); + + return(ret); +} + +/************************************************************************* +Updates the search info of an index about hash successes. NOTE that info +is NOT protected by any semaphore, to save CPU time! Do not assume its fields +are consistent. */ +static +void +btr_search_info_update_hash( +/*========================*/ + btr_search_t* info, /* in/out: search info */ + btr_cur_t* cursor) /* in: cursor which was just positioned */ +{ + dict_index_t* index; + ulint n_unique; + int cmp; + +#ifdef UNIV_SYNC_DEBUG + ut_ad(!rw_lock_own(&btr_search_latch, RW_LOCK_SHARED)); + ut_ad(!rw_lock_own(&btr_search_latch, RW_LOCK_EX)); +#endif /* UNIV_SYNC_DEBUG */ + + index = cursor->index; + + if (dict_index_is_ibuf(index)) { + /* So many deletes are performed on an insert buffer tree + that we do not consider a hash index useful on it: */ + + return; + } + + n_unique = dict_index_get_n_unique_in_tree(index); + + if (info->n_hash_potential == 0) { + + goto set_new_recomm; + } + + /* Test if the search would have succeeded using the recommended + hash prefix */ + + if (info->n_fields >= n_unique && cursor->up_match >= n_unique) { +increment_potential: + info->n_hash_potential++; + + return; + } + + cmp = ut_pair_cmp(info->n_fields, info->n_bytes, + cursor->low_match, cursor->low_bytes); + + if (info->left_side ? cmp <= 0 : cmp > 0) { + + goto set_new_recomm; + } + + cmp = ut_pair_cmp(info->n_fields, info->n_bytes, + cursor->up_match, cursor->up_bytes); + + if (info->left_side ? cmp <= 0 : cmp > 0) { + + goto increment_potential; + } + +set_new_recomm: + /* We have to set a new recommendation; skip the hash analysis + for a while to avoid unnecessary CPU time usage when there is no + chance for success */ + + info->hash_analysis = 0; + + cmp = ut_pair_cmp(cursor->up_match, cursor->up_bytes, + cursor->low_match, cursor->low_bytes); + if (cmp == 0) { + info->n_hash_potential = 0; + + /* For extra safety, we set some sensible values here */ + + info->n_fields = 1; + info->n_bytes = 0; + + info->left_side = TRUE; + + } else if (cmp > 0) { + info->n_hash_potential = 1; + + if (cursor->up_match >= n_unique) { + + info->n_fields = n_unique; + info->n_bytes = 0; + + } else if (cursor->low_match < cursor->up_match) { + + info->n_fields = cursor->low_match + 1; + info->n_bytes = 0; + } else { + info->n_fields = cursor->low_match; + info->n_bytes = cursor->low_bytes + 1; + } + + info->left_side = TRUE; + } else { + info->n_hash_potential = 1; + + if (cursor->low_match >= n_unique) { + + info->n_fields = n_unique; + info->n_bytes = 0; + + } else if (cursor->low_match > cursor->up_match) { + + info->n_fields = cursor->up_match + 1; + info->n_bytes = 0; + } else { + info->n_fields = cursor->up_match; + info->n_bytes = cursor->up_bytes + 1; + } + + info->left_side = FALSE; + } +} + +/************************************************************************* +Updates the block search info on hash successes. NOTE that info and +block->n_hash_helps, n_fields, n_bytes, side are NOT protected by any +semaphore, to save CPU time! Do not assume the fields are consistent. */ +static +ibool +btr_search_update_block_hash_info( +/*==============================*/ + /* out: TRUE if building a (new) hash index on + the block is recommended */ + btr_search_t* info, /* in: search info */ + buf_block_t* block, /* in: buffer block */ + btr_cur_t* cursor __attribute__((unused))) + /* in: cursor */ +{ +#ifdef UNIV_SYNC_DEBUG + ut_ad(!rw_lock_own(&btr_search_latch, RW_LOCK_SHARED)); + ut_ad(!rw_lock_own(&btr_search_latch, RW_LOCK_EX)); + ut_ad(rw_lock_own(&block->lock, RW_LOCK_SHARED) + || rw_lock_own(&block->lock, RW_LOCK_EX)); +#endif /* UNIV_SYNC_DEBUG */ + ut_ad(cursor); + + info->last_hash_succ = FALSE; + + ut_a(buf_block_state_valid(block)); + ut_ad(info->magic_n == BTR_SEARCH_MAGIC_N); + + if ((block->n_hash_helps > 0) + && (info->n_hash_potential > 0) + && (block->n_fields == info->n_fields) + && (block->n_bytes == info->n_bytes) + && (block->left_side == info->left_side)) { + + if ((block->is_hashed) + && (block->curr_n_fields == info->n_fields) + && (block->curr_n_bytes == info->n_bytes) + && (block->curr_left_side == info->left_side)) { + + /* The search would presumably have succeeded using + the hash index */ + + info->last_hash_succ = TRUE; + } + + block->n_hash_helps++; + } else { + block->n_hash_helps = 1; + block->n_fields = info->n_fields; + block->n_bytes = info->n_bytes; + block->left_side = info->left_side; + } + +#ifdef UNIV_DEBUG + if (cursor->index->table->does_not_fit_in_memory) { + block->n_hash_helps = 0; + } +#endif /* UNIV_DEBUG */ + + if ((block->n_hash_helps > page_get_n_recs(block->frame) + / BTR_SEARCH_PAGE_BUILD_LIMIT) + && (info->n_hash_potential >= BTR_SEARCH_BUILD_LIMIT)) { + + if ((!block->is_hashed) + || (block->n_hash_helps + > 2 * page_get_n_recs(block->frame)) + || (block->n_fields != block->curr_n_fields) + || (block->n_bytes != block->curr_n_bytes) + || (block->left_side != block->curr_left_side)) { + + /* Build a new hash index on the page */ + + return(TRUE); + } + } + + return(FALSE); +} + +/************************************************************************* +Updates a hash node reference when it has been unsuccessfully used in a +search which could have succeeded with the used hash parameters. This can +happen because when building a hash index for a page, we do not check +what happens at page boundaries, and therefore there can be misleading +hash nodes. Also, collisions in the fold value can lead to misleading +references. This function lazily fixes these imperfections in the hash +index. */ +static +void +btr_search_update_hash_ref( +/*=======================*/ + btr_search_t* info, /* in: search info */ + buf_block_t* block, /* in: buffer block where cursor positioned */ + btr_cur_t* cursor) /* in: cursor */ +{ + ulint fold; + rec_t* rec; + dulint index_id; + + ut_ad(cursor->flag == BTR_CUR_HASH_FAIL); +#ifdef UNIV_SYNC_DEBUG + ut_ad(rw_lock_own(&btr_search_latch, RW_LOCK_EX)); + ut_ad(rw_lock_own(&(block->lock), RW_LOCK_SHARED) + || rw_lock_own(&(block->lock), RW_LOCK_EX)); +#endif /* UNIV_SYNC_DEBUG */ + ut_ad(page_align(btr_cur_get_rec(cursor)) + == buf_block_get_frame(block)); + + if (!block->is_hashed) { + + return; + } + + ut_a(block->index == cursor->index); + ut_a(!dict_index_is_ibuf(cursor->index)); + + if ((info->n_hash_potential > 0) + && (block->curr_n_fields == info->n_fields) + && (block->curr_n_bytes == info->n_bytes) + && (block->curr_left_side == info->left_side)) { + mem_heap_t* heap = NULL; + ulint offsets_[REC_OFFS_NORMAL_SIZE]; + rec_offs_init(offsets_); + + rec = btr_cur_get_rec(cursor); + + if (!page_rec_is_user_rec(rec)) { + + return; + } + + index_id = cursor->index->id; + fold = rec_fold(rec, + rec_get_offsets(rec, cursor->index, offsets_, + ULINT_UNDEFINED, &heap), + block->curr_n_fields, + block->curr_n_bytes, index_id); + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } +#ifdef UNIV_SYNC_DEBUG + ut_ad(rw_lock_own(&btr_search_latch, RW_LOCK_EX)); +#endif /* UNIV_SYNC_DEBUG */ + + ha_insert_for_fold(btr_search_sys->hash_index, fold, + block, rec); + } +} + +/************************************************************************* +Updates the search info. */ +UNIV_INTERN +void +btr_search_info_update_slow( +/*========================*/ + btr_search_t* info, /* in/out: search info */ + btr_cur_t* cursor) /* in: cursor which was just positioned */ +{ + buf_block_t* block; + ibool build_index; + ulint* params; + ulint* params2; + +#ifdef UNIV_SYNC_DEBUG + ut_ad(!rw_lock_own(&btr_search_latch, RW_LOCK_SHARED)); + ut_ad(!rw_lock_own(&btr_search_latch, RW_LOCK_EX)); +#endif /* UNIV_SYNC_DEBUG */ + + block = btr_cur_get_block(cursor); + + /* NOTE that the following two function calls do NOT protect + info or block->n_fields etc. with any semaphore, to save CPU time! + We cannot assume the fields are consistent when we return from + those functions! */ + + btr_search_info_update_hash(info, cursor); + + build_index = btr_search_update_block_hash_info(info, block, cursor); + + if (build_index || (cursor->flag == BTR_CUR_HASH_FAIL)) { + + btr_search_check_free_space_in_heap(); + } + + if (cursor->flag == BTR_CUR_HASH_FAIL) { + /* Update the hash node reference, if appropriate */ + +#ifdef UNIV_SEARCH_PERF_STAT + btr_search_n_hash_fail++; +#endif /* UNIV_SEARCH_PERF_STAT */ + + rw_lock_x_lock(&btr_search_latch); + + btr_search_update_hash_ref(info, block, cursor); + + rw_lock_x_unlock(&btr_search_latch); + } + + if (build_index) { + /* Note that since we did not protect block->n_fields etc. + with any semaphore, the values can be inconsistent. We have + to check inside the function call that they make sense. We + also malloc an array and store the values there to make sure + the compiler does not let the function call parameters change + inside the called function. It might be that the compiler + would optimize the call just to pass pointers to block. */ + + params = mem_alloc(3 * sizeof(ulint)); + params[0] = block->n_fields; + params[1] = block->n_bytes; + params[2] = block->left_side; + + /* Make sure the compiler cannot deduce the values and do + optimizations */ + + params2 = params + btr_search_this_is_zero; + + btr_search_build_page_hash_index(cursor->index, + block, + params2[0], + params2[1], + params2[2]); + mem_free(params); + } +} + +/********************************************************************** +Checks if a guessed position for a tree cursor is right. Note that if +mode is PAGE_CUR_LE, which is used in inserts, and the function returns +TRUE, then cursor->up_match and cursor->low_match both have sensible values. */ +static +ibool +btr_search_check_guess( +/*===================*/ + /* out: TRUE if success */ + btr_cur_t* cursor, /* in: guessed cursor position */ + ibool can_only_compare_to_cursor_rec, + /* in: if we do not have a latch on the page + of cursor, but only a latch on + btr_search_latch, then ONLY the columns + of the record UNDER the cursor are + protected, not the next or previous record + in the chain: we cannot look at the next or + previous record to check our guess! */ + const dtuple_t* tuple, /* in: data tuple */ + ulint mode, /* in: PAGE_CUR_L, PAGE_CUR_LE, PAGE_CUR_G, + or PAGE_CUR_GE */ + mtr_t* mtr) /* in: mtr */ +{ + rec_t* rec; + ulint n_unique; + ulint match; + ulint bytes; + int cmp; + mem_heap_t* heap = NULL; + ulint offsets_[REC_OFFS_NORMAL_SIZE]; + ulint* offsets = offsets_; + ibool success = FALSE; + rec_offs_init(offsets_); + + n_unique = dict_index_get_n_unique_in_tree(cursor->index); + + rec = btr_cur_get_rec(cursor); + + ut_ad(page_rec_is_user_rec(rec)); + + match = 0; + bytes = 0; + + offsets = rec_get_offsets(rec, cursor->index, offsets, + n_unique, &heap); + cmp = page_cmp_dtuple_rec_with_match(tuple, rec, + offsets, &match, &bytes); + + if (mode == PAGE_CUR_GE) { + if (cmp == 1) { + goto exit_func; + } + + cursor->up_match = match; + + if (match >= n_unique) { + success = TRUE; + goto exit_func; + } + } else if (mode == PAGE_CUR_LE) { + if (cmp == -1) { + goto exit_func; + } + + cursor->low_match = match; + + } else if (mode == PAGE_CUR_G) { + if (cmp != -1) { + goto exit_func; + } + } else if (mode == PAGE_CUR_L) { + if (cmp != 1) { + goto exit_func; + } + } + + if (can_only_compare_to_cursor_rec) { + /* Since we could not determine if our guess is right just by + looking at the record under the cursor, return FALSE */ + goto exit_func; + } + + match = 0; + bytes = 0; + + if ((mode == PAGE_CUR_G) || (mode == PAGE_CUR_GE)) { + rec_t* prev_rec; + + ut_ad(!page_rec_is_infimum(rec)); + + prev_rec = page_rec_get_prev(rec); + + if (page_rec_is_infimum(prev_rec)) { + success = btr_page_get_prev(page_align(prev_rec), mtr) + == FIL_NULL; + + goto exit_func; + } + + offsets = rec_get_offsets(prev_rec, cursor->index, offsets, + n_unique, &heap); + cmp = page_cmp_dtuple_rec_with_match(tuple, prev_rec, + offsets, &match, &bytes); + if (mode == PAGE_CUR_GE) { + success = cmp == 1; + } else { + success = cmp != -1; + } + + goto exit_func; + } else { + rec_t* next_rec; + + ut_ad(!page_rec_is_supremum(rec)); + + next_rec = page_rec_get_next(rec); + + if (page_rec_is_supremum(next_rec)) { + if (btr_page_get_next(page_align(next_rec), mtr) + == FIL_NULL) { + + cursor->up_match = 0; + success = TRUE; + } + + goto exit_func; + } + + offsets = rec_get_offsets(next_rec, cursor->index, offsets, + n_unique, &heap); + cmp = page_cmp_dtuple_rec_with_match(tuple, next_rec, + offsets, &match, &bytes); + if (mode == PAGE_CUR_LE) { + success = cmp == -1; + cursor->up_match = match; + } else { + success = cmp != 1; + } + } +exit_func: + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } + return(success); +} + +/********************************************************************** +Tries to guess the right search position based on the hash search info +of the index. Note that if mode is PAGE_CUR_LE, which is used in inserts, +and the function returns TRUE, then cursor->up_match and cursor->low_match +both have sensible values. */ +UNIV_INTERN +ibool +btr_search_guess_on_hash( +/*=====================*/ + /* out: TRUE if succeeded */ + dict_index_t* index, /* in: index */ + btr_search_t* info, /* in: index search info */ + const dtuple_t* tuple, /* in: logical record */ + ulint mode, /* in: PAGE_CUR_L, ... */ + ulint latch_mode, /* in: BTR_SEARCH_LEAF, ...; + NOTE that only if has_search_latch + is 0, we will have a latch set on + the cursor page, otherwise we assume + the caller uses his search latch + to protect the record! */ + btr_cur_t* cursor, /* out: tree cursor */ + ulint has_search_latch,/* in: latch mode the caller + currently has on btr_search_latch: + RW_S_LATCH, RW_X_LATCH, or 0 */ + mtr_t* mtr) /* in: mtr */ +{ + buf_block_t* block; + rec_t* rec; + ulint fold; + dulint index_id; +#ifdef notdefined + btr_cur_t cursor2; + btr_pcur_t pcur; +#endif + ut_ad(index && info && tuple && cursor && mtr); + ut_ad((latch_mode == BTR_SEARCH_LEAF) + || (latch_mode == BTR_MODIFY_LEAF)); + + /* Note that, for efficiency, the struct info may not be protected by + any latch here! */ + + if (UNIV_UNLIKELY(info->n_hash_potential == 0)) { + + return(FALSE); + } + + cursor->n_fields = info->n_fields; + cursor->n_bytes = info->n_bytes; + + if (UNIV_UNLIKELY(dtuple_get_n_fields(tuple) + < cursor->n_fields + (cursor->n_bytes > 0))) { + + return(FALSE); + } + + index_id = index->id; + +#ifdef UNIV_SEARCH_PERF_STAT + info->n_hash_succ++; +#endif + fold = dtuple_fold(tuple, cursor->n_fields, cursor->n_bytes, index_id); + + cursor->fold = fold; + cursor->flag = BTR_CUR_HASH; + + if (UNIV_LIKELY(!has_search_latch)) { + rw_lock_s_lock(&btr_search_latch); + + if (UNIV_UNLIKELY(!btr_search_enabled)) { + goto failure_unlock; + } + } + + ut_ad(rw_lock_get_writer(&btr_search_latch) != RW_LOCK_EX); + ut_ad(rw_lock_get_reader_count(&btr_search_latch) > 0); + + rec = ha_search_and_get_data(btr_search_sys->hash_index, fold); + + if (UNIV_UNLIKELY(!rec)) { + goto failure_unlock; + } + + block = buf_block_align(rec); + + if (UNIV_LIKELY(!has_search_latch)) { + + if (UNIV_UNLIKELY( + !buf_page_get_known_nowait(latch_mode, block, + BUF_MAKE_YOUNG, + __FILE__, __LINE__, + mtr))) { + goto failure_unlock; + } + + rw_lock_s_unlock(&btr_search_latch); + + buf_block_dbg_add_level(block, SYNC_TREE_NODE_FROM_HASH); + } + + if (UNIV_UNLIKELY(buf_block_get_state(block) != BUF_BLOCK_FILE_PAGE)) { + ut_ad(buf_block_get_state(block) == BUF_BLOCK_REMOVE_HASH); + + if (UNIV_LIKELY(!has_search_latch)) { + + btr_leaf_page_release(block, latch_mode, mtr); + } + + goto failure; + } + + ut_ad(page_rec_is_user_rec(rec)); + + btr_cur_position(index, rec, block, cursor); + + /* Check the validity of the guess within the page */ + + /* If we only have the latch on btr_search_latch, not on the + page, it only protects the columns of the record the cursor + is positioned on. We cannot look at the next of the previous + record to determine if our guess for the cursor position is + right. */ + if (UNIV_EXPECT + (ut_dulint_cmp(index_id, btr_page_get_index_id(block->frame)), 0) + || !btr_search_check_guess(cursor, + has_search_latch, + tuple, mode, mtr)) { + if (UNIV_LIKELY(!has_search_latch)) { + btr_leaf_page_release(block, latch_mode, mtr); + } + + goto failure; + } + + if (UNIV_LIKELY(info->n_hash_potential < BTR_SEARCH_BUILD_LIMIT + 5)) { + + info->n_hash_potential++; + } + +#ifdef notdefined + /* These lines of code can be used in a debug version to check + the correctness of the searched cursor position: */ + + info->last_hash_succ = FALSE; + + /* Currently, does not work if the following fails: */ + ut_ad(!has_search_latch); + + btr_leaf_page_release(block, latch_mode, mtr); + + btr_cur_search_to_nth_level(index, 0, tuple, mode, latch_mode, + &cursor2, 0, mtr); + if (mode == PAGE_CUR_GE + && page_rec_is_supremum(btr_cur_get_rec(&cursor2))) { + + /* If mode is PAGE_CUR_GE, then the binary search + in the index tree may actually take us to the supremum + of the previous page */ + + info->last_hash_succ = FALSE; + + btr_pcur_open_on_user_rec(index, tuple, mode, latch_mode, + &pcur, mtr); + ut_ad(btr_pcur_get_rec(&pcur) == btr_cur_get_rec(cursor)); + } else { + ut_ad(btr_cur_get_rec(&cursor2) == btr_cur_get_rec(cursor)); + } + + /* NOTE that it is theoretically possible that the above assertions + fail if the page of the cursor gets removed from the buffer pool + meanwhile! Thus it might not be a bug. */ +#endif + info->last_hash_succ = TRUE; + +#ifdef UNIV_SEARCH_PERF_STAT + btr_search_n_succ++; +#endif + if (UNIV_LIKELY(!has_search_latch) + && buf_page_peek_if_too_old(&block->page)) { + + buf_page_make_young(&block->page); + } + + /* Increment the page get statistics though we did not really + fix the page: for user info only */ + + buf_pool->n_page_gets++; + + return(TRUE); + + /*-------------------------------------------*/ +failure_unlock: + if (UNIV_LIKELY(!has_search_latch)) { + rw_lock_s_unlock(&btr_search_latch); + } +failure: + cursor->flag = BTR_CUR_HASH_FAIL; + +#ifdef UNIV_SEARCH_PERF_STAT + info->n_hash_fail++; + + if (info->n_hash_succ > 0) { + info->n_hash_succ--; + } +#endif + info->last_hash_succ = FALSE; + + return(FALSE); +} + +/************************************************************************ +Drops a page hash index. */ +UNIV_INTERN +void +btr_search_drop_page_hash_index( +/*============================*/ + buf_block_t* block) /* in: block containing index page, + s- or x-latched, or an index page + for which we know that + block->buf_fix_count == 0 */ +{ + hash_table_t* table; + ulint n_fields; + ulint n_bytes; + const page_t* page; + const rec_t* rec; + ulint fold; + ulint prev_fold; + dulint index_id; + ulint n_cached; + ulint n_recs; + ulint* folds; + ulint i; + mem_heap_t* heap; + const dict_index_t* index; + ulint* offsets; + +#ifdef UNIV_SYNC_DEBUG + ut_ad(!rw_lock_own(&btr_search_latch, RW_LOCK_SHARED)); + ut_ad(!rw_lock_own(&btr_search_latch, RW_LOCK_EX)); +#endif /* UNIV_SYNC_DEBUG */ + +retry: + rw_lock_s_lock(&btr_search_latch); + page = block->frame; + + if (UNIV_LIKELY(!block->is_hashed)) { + + rw_lock_s_unlock(&btr_search_latch); + + return; + } + + table = btr_search_sys->hash_index; + +#ifdef UNIV_SYNC_DEBUG + ut_ad(rw_lock_own(&(block->lock), RW_LOCK_SHARED) + || rw_lock_own(&(block->lock), RW_LOCK_EX) + || (block->page.buf_fix_count == 0)); +#endif /* UNIV_SYNC_DEBUG */ + + n_fields = block->curr_n_fields; + n_bytes = block->curr_n_bytes; + index = block->index; + ut_a(!dict_index_is_ibuf(index)); + + /* NOTE: The fields of block must not be accessed after + releasing btr_search_latch, as the index page might only + be s-latched! */ + + rw_lock_s_unlock(&btr_search_latch); + + ut_a(n_fields + n_bytes > 0); + + n_recs = page_get_n_recs(page); + + /* Calculate and cache fold values into an array for fast deletion + from the hash index */ + + folds = mem_alloc(n_recs * sizeof(ulint)); + + n_cached = 0; + + rec = page_get_infimum_rec(page); + rec = page_rec_get_next_low(rec, page_is_comp(page)); + + index_id = btr_page_get_index_id(page); + + ut_a(0 == ut_dulint_cmp(index_id, index->id)); + + prev_fold = 0; + + heap = NULL; + offsets = NULL; + + while (!page_rec_is_supremum(rec)) { + offsets = rec_get_offsets(rec, index, offsets, + n_fields + (n_bytes > 0), &heap); + ut_a(rec_offs_n_fields(offsets) == n_fields + (n_bytes > 0)); + fold = rec_fold(rec, offsets, n_fields, n_bytes, index_id); + + if (fold == prev_fold && prev_fold != 0) { + + goto next_rec; + } + + /* Remove all hash nodes pointing to this page from the + hash chain */ + + folds[n_cached] = fold; + n_cached++; +next_rec: + rec = page_rec_get_next_low(rec, page_rec_is_comp(rec)); + prev_fold = fold; + } + + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } + + rw_lock_x_lock(&btr_search_latch); + + if (UNIV_UNLIKELY(!block->is_hashed)) { + /* Someone else has meanwhile dropped the hash index */ + + goto cleanup; + } + + ut_a(block->index == index); + + if (UNIV_UNLIKELY(block->curr_n_fields != n_fields) + || UNIV_UNLIKELY(block->curr_n_bytes != n_bytes)) { + + /* Someone else has meanwhile built a new hash index on the + page, with different parameters */ + + rw_lock_x_unlock(&btr_search_latch); + + mem_free(folds); + goto retry; + } + + for (i = 0; i < n_cached; i++) { + + ha_remove_all_nodes_to_page(table, folds[i], page); + } + + ut_a(index->search_info->ref_count > 0); + index->search_info->ref_count--; + + block->is_hashed = FALSE; + block->index = NULL; + +cleanup: +#if defined UNIV_AHI_DEBUG || defined UNIV_DEBUG + if (UNIV_UNLIKELY(block->n_pointers)) { + /* Corruption */ + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: Corruption of adaptive hash index." + " After dropping\n" + "InnoDB: the hash index to a page of %s," + " still %lu hash nodes remain.\n", + index->name, (ulong) block->n_pointers); + rw_lock_x_unlock(&btr_search_latch); + + btr_search_validate(); + } else { + rw_lock_x_unlock(&btr_search_latch); + } +#else /* UNIV_AHI_DEBUG || UNIV_DEBUG */ + rw_lock_x_unlock(&btr_search_latch); +#endif /* UNIV_AHI_DEBUG || UNIV_DEBUG */ + + mem_free(folds); +} + +/************************************************************************ +Drops a page hash index when a page is freed from a fseg to the file system. +Drops possible hash index if the page happens to be in the buffer pool. */ +UNIV_INTERN +void +btr_search_drop_page_hash_when_freed( +/*=================================*/ + ulint space, /* in: space id */ + ulint zip_size, /* in: compressed page size in bytes + or 0 for uncompressed pages */ + ulint page_no) /* in: page number */ +{ + buf_block_t* block; + mtr_t mtr; + + if (!buf_page_peek_if_search_hashed(space, page_no)) { + + return; + } + + mtr_start(&mtr); + + /* We assume that if the caller has a latch on the page, then the + caller has already dropped the hash index for the page, and we never + get here. Therefore we can acquire the s-latch to the page without + having to fear a deadlock. */ + + block = buf_page_get_gen(space, zip_size, page_no, RW_S_LATCH, NULL, + BUF_GET_IF_IN_POOL, __FILE__, __LINE__, + &mtr); + /* Because the buffer pool mutex was released by + buf_page_peek_if_search_hashed(), it is possible that the + block was removed from the buffer pool by another thread + before buf_page_get_gen() got a chance to acquire the buffer + pool mutex again. Thus, we must check for a NULL return. */ + + if (UNIV_LIKELY(block != NULL)) { + + buf_block_dbg_add_level(block, SYNC_TREE_NODE_FROM_HASH); + + btr_search_drop_page_hash_index(block); + } + + mtr_commit(&mtr); +} + +/************************************************************************ +Builds a hash index on a page with the given parameters. If the page already +has a hash index with different parameters, the old hash index is removed. +If index is non-NULL, this function checks if n_fields and n_bytes are +sensible values, and does not build a hash index if not. */ +static +void +btr_search_build_page_hash_index( +/*=============================*/ + dict_index_t* index, /* in: index for which to build */ + buf_block_t* block, /* in: index page, s- or x-latched */ + ulint n_fields,/* in: hash this many full fields */ + ulint n_bytes,/* in: hash this many bytes from the next + field */ + ibool left_side)/* in: hash for searches from left side? */ +{ + hash_table_t* table; + page_t* page; + rec_t* rec; + rec_t* next_rec; + ulint fold; + ulint next_fold; + dulint index_id; + ulint n_cached; + ulint n_recs; + ulint* folds; + rec_t** recs; + ulint i; + mem_heap_t* heap = NULL; + ulint offsets_[REC_OFFS_NORMAL_SIZE]; + ulint* offsets = offsets_; + rec_offs_init(offsets_); + + ut_ad(index); + ut_a(!dict_index_is_ibuf(index)); + + table = btr_search_sys->hash_index; + page = buf_block_get_frame(block); + +#ifdef UNIV_SYNC_DEBUG + ut_ad(!rw_lock_own(&btr_search_latch, RW_LOCK_EX)); + ut_ad(rw_lock_own(&(block->lock), RW_LOCK_SHARED) + || rw_lock_own(&(block->lock), RW_LOCK_EX)); +#endif /* UNIV_SYNC_DEBUG */ + + rw_lock_s_lock(&btr_search_latch); + + if (block->is_hashed && ((block->curr_n_fields != n_fields) + || (block->curr_n_bytes != n_bytes) + || (block->curr_left_side != left_side))) { + + rw_lock_s_unlock(&btr_search_latch); + + btr_search_drop_page_hash_index(block); + } else { + rw_lock_s_unlock(&btr_search_latch); + } + + n_recs = page_get_n_recs(page); + + if (n_recs == 0) { + + return; + } + + /* Check that the values for hash index build are sensible */ + + if (n_fields + n_bytes == 0) { + + return; + } + + if (dict_index_get_n_unique_in_tree(index) < n_fields + || (dict_index_get_n_unique_in_tree(index) == n_fields + && n_bytes > 0)) { + return; + } + + /* Calculate and cache fold values and corresponding records into + an array for fast insertion to the hash index */ + + folds = mem_alloc(n_recs * sizeof(ulint)); + recs = mem_alloc(n_recs * sizeof(rec_t*)); + + n_cached = 0; + + index_id = btr_page_get_index_id(page); + + rec = page_rec_get_next(page_get_infimum_rec(page)); + + offsets = rec_get_offsets(rec, index, offsets, + n_fields + (n_bytes > 0), &heap); + + if (!page_rec_is_supremum(rec)) { + ut_a(n_fields <= rec_offs_n_fields(offsets)); + + if (n_bytes > 0) { + ut_a(n_fields < rec_offs_n_fields(offsets)); + } + } + + fold = rec_fold(rec, offsets, n_fields, n_bytes, index_id); + + if (left_side) { + + folds[n_cached] = fold; + recs[n_cached] = rec; + n_cached++; + } + + for (;;) { + next_rec = page_rec_get_next(rec); + + if (page_rec_is_supremum(next_rec)) { + + if (!left_side) { + + folds[n_cached] = fold; + recs[n_cached] = rec; + n_cached++; + } + + break; + } + + offsets = rec_get_offsets(next_rec, index, offsets, + n_fields + (n_bytes > 0), &heap); + next_fold = rec_fold(next_rec, offsets, n_fields, + n_bytes, index_id); + + if (fold != next_fold) { + /* Insert an entry into the hash index */ + + if (left_side) { + + folds[n_cached] = next_fold; + recs[n_cached] = next_rec; + n_cached++; + } else { + folds[n_cached] = fold; + recs[n_cached] = rec; + n_cached++; + } + } + + rec = next_rec; + fold = next_fold; + } + + btr_search_check_free_space_in_heap(); + + rw_lock_x_lock(&btr_search_latch); + + if (UNIV_UNLIKELY(!btr_search_enabled)) { + goto exit_func; + } + + if (block->is_hashed && ((block->curr_n_fields != n_fields) + || (block->curr_n_bytes != n_bytes) + || (block->curr_left_side != left_side))) { + goto exit_func; + } + + /* This counter is decremented every time we drop page + hash index entries and is incremented here. Since we can + rebuild hash index for a page that is already hashed, we + have to take care not to increment the counter in that + case. */ + if (!block->is_hashed) { + index->search_info->ref_count++; + } + + block->is_hashed = TRUE; + block->n_hash_helps = 0; + + block->curr_n_fields = n_fields; + block->curr_n_bytes = n_bytes; + block->curr_left_side = left_side; + block->index = index; + + for (i = 0; i < n_cached; i++) { + + ha_insert_for_fold(table, folds[i], block, recs[i]); + } + +exit_func: + rw_lock_x_unlock(&btr_search_latch); + + mem_free(folds); + mem_free(recs); + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } +} + +/************************************************************************ +Moves or deletes hash entries for moved records. If new_page is already hashed, +then the hash index for page, if any, is dropped. If new_page is not hashed, +and page is hashed, then a new hash index is built to new_page with the same +parameters as page (this often happens when a page is split). */ +UNIV_INTERN +void +btr_search_move_or_delete_hash_entries( +/*===================================*/ + buf_block_t* new_block, /* in: records are copied + to this page */ + buf_block_t* block, /* in: index page from which + records were copied, and the + copied records will be deleted + from this page */ + dict_index_t* index) /* in: record descriptor */ +{ + ulint n_fields; + ulint n_bytes; + ibool left_side; + +#ifdef UNIV_SYNC_DEBUG + ut_ad(rw_lock_own(&(block->lock), RW_LOCK_EX)); + ut_ad(rw_lock_own(&(new_block->lock), RW_LOCK_EX)); +#endif /* UNIV_SYNC_DEBUG */ + ut_a(!new_block->is_hashed || new_block->index == index); + ut_a(!block->is_hashed || block->index == index); + ut_a(!(new_block->is_hashed || block->is_hashed) + || !dict_index_is_ibuf(index)); + + rw_lock_s_lock(&btr_search_latch); + + if (new_block->is_hashed) { + + rw_lock_s_unlock(&btr_search_latch); + + btr_search_drop_page_hash_index(block); + + return; + } + + if (block->is_hashed) { + + n_fields = block->curr_n_fields; + n_bytes = block->curr_n_bytes; + left_side = block->curr_left_side; + + new_block->n_fields = block->curr_n_fields; + new_block->n_bytes = block->curr_n_bytes; + new_block->left_side = left_side; + + rw_lock_s_unlock(&btr_search_latch); + + ut_a(n_fields + n_bytes > 0); + + btr_search_build_page_hash_index(index, new_block, n_fields, + n_bytes, left_side); + ut_ad(n_fields == block->curr_n_fields); + ut_ad(n_bytes == block->curr_n_bytes); + ut_ad(left_side == block->curr_left_side); + return; + } + + rw_lock_s_unlock(&btr_search_latch); +} + +/************************************************************************ +Updates the page hash index when a single record is deleted from a page. */ +UNIV_INTERN +void +btr_search_update_hash_on_delete( +/*=============================*/ + btr_cur_t* cursor) /* in: cursor which was positioned on the + record to delete using btr_cur_search_..., + the record is not yet deleted */ +{ + hash_table_t* table; + buf_block_t* block; + rec_t* rec; + ulint fold; + dulint index_id; + ibool found; + ulint offsets_[REC_OFFS_NORMAL_SIZE]; + mem_heap_t* heap = NULL; + rec_offs_init(offsets_); + + rec = btr_cur_get_rec(cursor); + + block = btr_cur_get_block(cursor); + +#ifdef UNIV_SYNC_DEBUG + ut_ad(rw_lock_own(&(block->lock), RW_LOCK_EX)); +#endif /* UNIV_SYNC_DEBUG */ + + if (!block->is_hashed) { + + return; + } + + ut_a(block->index == cursor->index); + ut_a(block->curr_n_fields + block->curr_n_bytes > 0); + ut_a(!dict_index_is_ibuf(cursor->index)); + + table = btr_search_sys->hash_index; + + index_id = cursor->index->id; + fold = rec_fold(rec, rec_get_offsets(rec, cursor->index, offsets_, + ULINT_UNDEFINED, &heap), + block->curr_n_fields, block->curr_n_bytes, index_id); + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } + rw_lock_x_lock(&btr_search_latch); + + found = ha_search_and_delete_if_found(table, fold, rec); + + rw_lock_x_unlock(&btr_search_latch); +} + +/************************************************************************ +Updates the page hash index when a single record is inserted on a page. */ +UNIV_INTERN +void +btr_search_update_hash_node_on_insert( +/*==================================*/ + btr_cur_t* cursor) /* in: cursor which was positioned to the + place to insert using btr_cur_search_..., + and the new record has been inserted next + to the cursor */ +{ + hash_table_t* table; + buf_block_t* block; + rec_t* rec; + + rec = btr_cur_get_rec(cursor); + + block = btr_cur_get_block(cursor); + +#ifdef UNIV_SYNC_DEBUG + ut_ad(rw_lock_own(&(block->lock), RW_LOCK_EX)); +#endif /* UNIV_SYNC_DEBUG */ + + if (!block->is_hashed) { + + return; + } + + ut_a(block->index == cursor->index); + ut_a(!dict_index_is_ibuf(cursor->index)); + + rw_lock_x_lock(&btr_search_latch); + + if ((cursor->flag == BTR_CUR_HASH) + && (cursor->n_fields == block->curr_n_fields) + && (cursor->n_bytes == block->curr_n_bytes) + && !block->curr_left_side) { + + table = btr_search_sys->hash_index; + + ha_search_and_update_if_found(table, cursor->fold, rec, + block, page_rec_get_next(rec)); + + rw_lock_x_unlock(&btr_search_latch); + } else { + rw_lock_x_unlock(&btr_search_latch); + + btr_search_update_hash_on_insert(cursor); + } +} + +/************************************************************************ +Updates the page hash index when a single record is inserted on a page. */ +UNIV_INTERN +void +btr_search_update_hash_on_insert( +/*=============================*/ + btr_cur_t* cursor) /* in: cursor which was positioned to the + place to insert using btr_cur_search_..., + and the new record has been inserted next + to the cursor */ +{ + hash_table_t* table; + buf_block_t* block; + rec_t* rec; + rec_t* ins_rec; + rec_t* next_rec; + dulint index_id; + ulint fold; + ulint ins_fold; + ulint next_fold = 0; /* remove warning (??? bug ???) */ + ulint n_fields; + ulint n_bytes; + ibool left_side; + ibool locked = FALSE; + mem_heap_t* heap = NULL; + ulint offsets_[REC_OFFS_NORMAL_SIZE]; + ulint* offsets = offsets_; + rec_offs_init(offsets_); + + table = btr_search_sys->hash_index; + + btr_search_check_free_space_in_heap(); + + rec = btr_cur_get_rec(cursor); + + block = btr_cur_get_block(cursor); + +#ifdef UNIV_SYNC_DEBUG + ut_ad(rw_lock_own(&(block->lock), RW_LOCK_EX)); +#endif /* UNIV_SYNC_DEBUG */ + + if (!block->is_hashed) { + + return; + } + + ut_a(block->index == cursor->index); + ut_a(!dict_index_is_ibuf(cursor->index)); + + index_id = cursor->index->id; + + n_fields = block->curr_n_fields; + n_bytes = block->curr_n_bytes; + left_side = block->curr_left_side; + + ins_rec = page_rec_get_next(rec); + next_rec = page_rec_get_next(ins_rec); + + offsets = rec_get_offsets(ins_rec, cursor->index, offsets, + ULINT_UNDEFINED, &heap); + ins_fold = rec_fold(ins_rec, offsets, n_fields, n_bytes, index_id); + + if (!page_rec_is_supremum(next_rec)) { + offsets = rec_get_offsets(next_rec, cursor->index, offsets, + n_fields + (n_bytes > 0), &heap); + next_fold = rec_fold(next_rec, offsets, n_fields, + n_bytes, index_id); + } + + if (!page_rec_is_infimum(rec)) { + offsets = rec_get_offsets(rec, cursor->index, offsets, + n_fields + (n_bytes > 0), &heap); + fold = rec_fold(rec, offsets, n_fields, n_bytes, index_id); + } else { + if (left_side) { + + rw_lock_x_lock(&btr_search_latch); + + locked = TRUE; + + ha_insert_for_fold(table, ins_fold, block, ins_rec); + } + + goto check_next_rec; + } + + if (fold != ins_fold) { + + if (!locked) { + + rw_lock_x_lock(&btr_search_latch); + + locked = TRUE; + } + + if (!left_side) { + ha_insert_for_fold(table, fold, block, rec); + } else { + ha_insert_for_fold(table, ins_fold, block, ins_rec); + } + } + +check_next_rec: + if (page_rec_is_supremum(next_rec)) { + + if (!left_side) { + + if (!locked) { + rw_lock_x_lock(&btr_search_latch); + + locked = TRUE; + } + + ha_insert_for_fold(table, ins_fold, block, ins_rec); + } + + goto function_exit; + } + + if (ins_fold != next_fold) { + + if (!locked) { + + rw_lock_x_lock(&btr_search_latch); + + locked = TRUE; + } + + if (!left_side) { + + ha_insert_for_fold(table, ins_fold, block, ins_rec); + /* + fputs("Hash insert for ", stderr); + dict_index_name_print(stderr, cursor->index); + fprintf(stderr, " fold %lu\n", ins_fold); + */ + } else { + ha_insert_for_fold(table, next_fold, block, next_rec); + } + } + +function_exit: + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } + if (locked) { + rw_lock_x_unlock(&btr_search_latch); + } +} + +/************************************************************************ +Validates the search system. */ +UNIV_INTERN +ibool +btr_search_validate(void) +/*=====================*/ + /* out: TRUE if ok */ +{ + ha_node_t* node; + ulint n_page_dumps = 0; + ibool ok = TRUE; + ulint i; + ulint cell_count; + mem_heap_t* heap = NULL; + ulint offsets_[REC_OFFS_NORMAL_SIZE]; + ulint* offsets = offsets_; + + /* How many cells to check before temporarily releasing + btr_search_latch. */ + ulint chunk_size = 10000; + + rec_offs_init(offsets_); + + rw_lock_x_lock(&btr_search_latch); + buf_pool_mutex_enter(); + + cell_count = hash_get_n_cells(btr_search_sys->hash_index); + + for (i = 0; i < cell_count; i++) { + /* We release btr_search_latch every once in a while to + give other queries a chance to run. */ + if ((i != 0) && ((i % chunk_size) == 0)) { + buf_pool_mutex_exit(); + rw_lock_x_unlock(&btr_search_latch); + os_thread_yield(); + rw_lock_x_lock(&btr_search_latch); + buf_pool_mutex_enter(); + } + + node = hash_get_nth_cell(btr_search_sys->hash_index, i)->node; + + for (; node != NULL; node = node->next) { + const buf_block_t* block + = buf_block_align(node->data); + const buf_block_t* hash_block; + + if (UNIV_LIKELY(buf_block_get_state(block) + == BUF_BLOCK_FILE_PAGE)) { + + /* The space and offset are only valid + for file blocks. It is possible that + the block is being freed + (BUF_BLOCK_REMOVE_HASH, see the + assertion and the comment below) */ + hash_block = buf_block_hash_get( + buf_block_get_space(block), + buf_block_get_page_no(block)); + } else { + hash_block = NULL; + } + + if (hash_block) { + ut_a(hash_block == block); + } else { + /* When a block is being freed, + buf_LRU_search_and_free_block() first + removes the block from + buf_pool->page_hash by calling + buf_LRU_block_remove_hashed_page(). + After that, it invokes + btr_search_drop_page_hash_index() to + remove the block from + btr_search_sys->hash_index. */ + + ut_a(buf_block_get_state(block) + == BUF_BLOCK_REMOVE_HASH); + } + + ut_a(!dict_index_is_ibuf(block->index)); + + offsets = rec_get_offsets((const rec_t*) node->data, + block->index, offsets, + block->curr_n_fields + + (block->curr_n_bytes > 0), + &heap); + + if (!block->is_hashed || node->fold + != rec_fold((rec_t*)(node->data), + offsets, + block->curr_n_fields, + block->curr_n_bytes, + btr_page_get_index_id(block->frame))) { + const page_t* page = block->frame; + + ok = FALSE; + ut_print_timestamp(stderr); + + fprintf(stderr, + " InnoDB: Error in an adaptive hash" + " index pointer to page %lu\n" + "InnoDB: ptr mem address %p" + " index id %lu %lu," + " node fold %lu, rec fold %lu\n", + (ulong) page_get_page_no(page), + node->data, + (ulong) ut_dulint_get_high( + btr_page_get_index_id(page)), + (ulong) ut_dulint_get_low( + btr_page_get_index_id(page)), + (ulong) node->fold, + (ulong) rec_fold((rec_t*)(node->data), + offsets, + block->curr_n_fields, + block->curr_n_bytes, + btr_page_get_index_id( + page))); + + fputs("InnoDB: Record ", stderr); + rec_print_new(stderr, (rec_t*)node->data, + offsets); + fprintf(stderr, "\nInnoDB: on that page." + " Page mem address %p, is hashed %lu," + " n fields %lu, n bytes %lu\n" + "InnoDB: side %lu\n", + (void*) page, (ulong) block->is_hashed, + (ulong) block->curr_n_fields, + (ulong) block->curr_n_bytes, + (ulong) block->curr_left_side); + + if (n_page_dumps < 20) { + buf_page_print(page, 0); + n_page_dumps++; + } + } + } + } + + for (i = 0; i < cell_count; i += chunk_size) { + ulint end_index = ut_min(i + chunk_size - 1, cell_count - 1); + + /* We release btr_search_latch every once in a while to + give other queries a chance to run. */ + if (i != 0) { + buf_pool_mutex_exit(); + rw_lock_x_unlock(&btr_search_latch); + os_thread_yield(); + rw_lock_x_lock(&btr_search_latch); + buf_pool_mutex_enter(); + } + + if (!ha_validate(btr_search_sys->hash_index, i, end_index)) { + ok = FALSE; + } + } + + buf_pool_mutex_exit(); + rw_lock_x_unlock(&btr_search_latch); + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } + + return(ok); +} === added directory 'storage/xtradb/buf' === added file 'storage/xtradb/buf/buf0buddy.c' --- a/storage/xtradb/buf/buf0buddy.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/buf/buf0buddy.c 2009-05-04 04:32:30 +0000 @@ -0,0 +1,682 @@ +/***************************************************************************** + +Copyright (c) 2006, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Binary buddy allocator for compressed pages + +Created December 2006 by Marko Makela +*******************************************************/ + +#define THIS_MODULE +#include "buf0buddy.h" +#ifdef UNIV_NONINL +# include "buf0buddy.ic" +#endif +#undef THIS_MODULE +#include "buf0buf.h" +#include "buf0lru.h" +#include "buf0flu.h" +#include "page0zip.h" + +/* Statistic counters */ + +#ifdef UNIV_DEBUG +/** Number of frames allocated from the buffer pool to the buddy system. +Protected by buf_pool_mutex. */ +static ulint buf_buddy_n_frames; +#endif /* UNIV_DEBUG */ +/** Statistics of the buddy system, indexed by block size. +Protected by buf_pool_mutex. */ +UNIV_INTERN buf_buddy_stat_t buf_buddy_stat[BUF_BUDDY_SIZES + 1]; + +/************************************************************************** +Get the offset of the buddy of a compressed page frame. */ +UNIV_INLINE +byte* +buf_buddy_get( +/*==========*/ + /* out: the buddy relative of page */ + byte* page, /* in: compressed page */ + ulint size) /* in: page size in bytes */ +{ + ut_ad(ut_is_2pow(size)); + ut_ad(size >= BUF_BUDDY_LOW); + ut_ad(size < BUF_BUDDY_HIGH); + ut_ad(!ut_align_offset(page, size)); + + if (((ulint) page) & size) { + return(page - size); + } else { + return(page + size); + } +} + +/************************************************************************** +Add a block to the head of the appropriate buddy free list. */ +UNIV_INLINE +void +buf_buddy_add_to_free( +/*==================*/ + buf_page_t* bpage, /* in,own: block to be freed */ + ulint i) /* in: index of buf_pool->zip_free[] */ +{ +#ifdef UNIV_DEBUG_VALGRIND + buf_page_t* b = UT_LIST_GET_FIRST(buf_pool->zip_free[i]); + + if (b) UNIV_MEM_VALID(b, BUF_BUDDY_LOW << i); +#endif /* UNIV_DEBUG_VALGRIND */ + + ut_ad(buf_pool->zip_free[i].start != bpage); + UT_LIST_ADD_FIRST(list, buf_pool->zip_free[i], bpage); + +#ifdef UNIV_DEBUG_VALGRIND + if (b) UNIV_MEM_FREE(b, BUF_BUDDY_LOW << i); + UNIV_MEM_ASSERT_AND_FREE(bpage, BUF_BUDDY_LOW << i); +#endif /* UNIV_DEBUG_VALGRIND */ +} + +/************************************************************************** +Remove a block from the appropriate buddy free list. */ +UNIV_INLINE +void +buf_buddy_remove_from_free( +/*=======================*/ + buf_page_t* bpage, /* in: block to be removed */ + ulint i) /* in: index of buf_pool->zip_free[] */ +{ +#ifdef UNIV_DEBUG_VALGRIND + buf_page_t* prev = UT_LIST_GET_PREV(list, bpage); + buf_page_t* next = UT_LIST_GET_NEXT(list, bpage); + + if (prev) UNIV_MEM_VALID(prev, BUF_BUDDY_LOW << i); + if (next) UNIV_MEM_VALID(next, BUF_BUDDY_LOW << i); + + ut_ad(!prev || buf_page_get_state(prev) == BUF_BLOCK_ZIP_FREE); + ut_ad(!next || buf_page_get_state(next) == BUF_BLOCK_ZIP_FREE); +#endif /* UNIV_DEBUG_VALGRIND */ + + ut_ad(buf_page_get_state(bpage) == BUF_BLOCK_ZIP_FREE); + UT_LIST_REMOVE(list, buf_pool->zip_free[i], bpage); + +#ifdef UNIV_DEBUG_VALGRIND + if (prev) UNIV_MEM_FREE(prev, BUF_BUDDY_LOW << i); + if (next) UNIV_MEM_FREE(next, BUF_BUDDY_LOW << i); +#endif /* UNIV_DEBUG_VALGRIND */ +} + +/************************************************************************** +Try to allocate a block from buf_pool->zip_free[]. */ +static +void* +buf_buddy_alloc_zip( +/*================*/ + /* out: allocated block, or NULL + if buf_pool->zip_free[] was empty */ + ulint i) /* in: index of buf_pool->zip_free[] */ +{ + buf_page_t* bpage; + + ut_ad(buf_pool_mutex_own()); + ut_a(i < BUF_BUDDY_SIZES); + +#if defined UNIV_DEBUG && !defined UNIV_DEBUG_VALGRIND + /* Valgrind would complain about accessing free memory. */ + UT_LIST_VALIDATE(list, buf_page_t, buf_pool->zip_free[i]); +#endif /* UNIV_DEBUG && !UNIV_DEBUG_VALGRIND */ + bpage = UT_LIST_GET_LAST(buf_pool->zip_free[i]); + + if (bpage) { + UNIV_MEM_VALID(bpage, BUF_BUDDY_LOW << i); + ut_a(buf_page_get_state(bpage) == BUF_BLOCK_ZIP_FREE); + + buf_buddy_remove_from_free(bpage, i); + } else if (i + 1 < BUF_BUDDY_SIZES) { + /* Attempt to split. */ + bpage = buf_buddy_alloc_zip(i + 1); + + if (bpage) { + buf_page_t* buddy = (buf_page_t*) + (((char*) bpage) + (BUF_BUDDY_LOW << i)); + + ut_ad(!buf_pool_contains_zip(buddy)); + ut_d(memset(buddy, i, BUF_BUDDY_LOW << i)); + buddy->state = BUF_BLOCK_ZIP_FREE; + buf_buddy_add_to_free(buddy, i); + } + } + +#ifdef UNIV_DEBUG + if (bpage) { + memset(bpage, ~i, BUF_BUDDY_LOW << i); + } +#endif /* UNIV_DEBUG */ + + UNIV_MEM_ALLOC(bpage, BUF_BUDDY_SIZES << i); + + return(bpage); +} + +/************************************************************************** +Deallocate a buffer frame of UNIV_PAGE_SIZE. */ +static +void +buf_buddy_block_free( +/*=================*/ + void* buf) /* in: buffer frame to deallocate */ +{ + const ulint fold = BUF_POOL_ZIP_FOLD_PTR(buf); + buf_page_t* bpage; + buf_block_t* block; + + ut_ad(buf_pool_mutex_own()); + ut_ad(!mutex_own(&buf_pool_zip_mutex)); + ut_a(!ut_align_offset(buf, UNIV_PAGE_SIZE)); + + HASH_SEARCH(hash, buf_pool->zip_hash, fold, buf_page_t*, bpage, + ut_ad(buf_page_get_state(bpage) == BUF_BLOCK_MEMORY + && bpage->in_zip_hash && !bpage->in_page_hash), + ((buf_block_t*) bpage)->frame == buf); + ut_a(bpage); + ut_a(buf_page_get_state(bpage) == BUF_BLOCK_MEMORY); + ut_ad(!bpage->in_page_hash); + ut_ad(bpage->in_zip_hash); + ut_d(bpage->in_zip_hash = FALSE); + HASH_DELETE(buf_page_t, hash, buf_pool->zip_hash, fold, bpage); + + ut_d(memset(buf, 0, UNIV_PAGE_SIZE)); + UNIV_MEM_INVALID(buf, UNIV_PAGE_SIZE); + + block = (buf_block_t*) bpage; + mutex_enter(&block->mutex); + buf_LRU_block_free_non_file_page(block); + mutex_exit(&block->mutex); + + ut_ad(buf_buddy_n_frames > 0); + ut_d(buf_buddy_n_frames--); +} + +/************************************************************************** +Allocate a buffer block to the buddy allocator. */ +static +void +buf_buddy_block_register( +/*=====================*/ + buf_block_t* block) /* in: buffer frame to allocate */ +{ + const ulint fold = BUF_POOL_ZIP_FOLD(block); + ut_ad(buf_pool_mutex_own()); + ut_ad(!mutex_own(&buf_pool_zip_mutex)); + + buf_block_set_state(block, BUF_BLOCK_MEMORY); + + ut_a(block->frame); + ut_a(!ut_align_offset(block->frame, UNIV_PAGE_SIZE)); + + ut_ad(!block->page.in_page_hash); + ut_ad(!block->page.in_zip_hash); + ut_d(block->page.in_zip_hash = TRUE); + HASH_INSERT(buf_page_t, hash, buf_pool->zip_hash, fold, &block->page); + + ut_d(buf_buddy_n_frames++); +} + +/************************************************************************** +Allocate a block from a bigger object. */ +static +void* +buf_buddy_alloc_from( +/*=================*/ + /* out: allocated block */ + void* buf, /* in: a block that is free to use */ + ulint i, /* in: index of buf_pool->zip_free[] */ + ulint j) /* in: size of buf as an index + of buf_pool->zip_free[] */ +{ + ulint offs = BUF_BUDDY_LOW << j; + ut_ad(j <= BUF_BUDDY_SIZES); + ut_ad(j >= i); + ut_ad(!ut_align_offset(buf, offs)); + + /* Add the unused parts of the block to the free lists. */ + while (j > i) { + buf_page_t* bpage; + + offs >>= 1; + j--; + + bpage = (buf_page_t*) ((byte*) buf + offs); + ut_d(memset(bpage, j, BUF_BUDDY_LOW << j)); + bpage->state = BUF_BLOCK_ZIP_FREE; +#if defined UNIV_DEBUG && !defined UNIV_DEBUG_VALGRIND + /* Valgrind would complain about accessing free memory. */ + UT_LIST_VALIDATE(list, buf_page_t, buf_pool->zip_free[j]); +#endif /* UNIV_DEBUG && !UNIV_DEBUG_VALGRIND */ + buf_buddy_add_to_free(bpage, j); + } + + return(buf); +} + +/************************************************************************** +Allocate a block. The thread calling this function must hold +buf_pool_mutex and must not hold buf_pool_zip_mutex or any block->mutex. +The buf_pool_mutex may only be released and reacquired if lru != NULL. */ +UNIV_INTERN +void* +buf_buddy_alloc_low( +/*================*/ + /* out: allocated block, + possibly NULL if lru==NULL */ + ulint i, /* in: index of buf_pool->zip_free[], + or BUF_BUDDY_SIZES */ + ibool* lru) /* in: pointer to a variable that will be assigned + TRUE if storage was allocated from the LRU list + and buf_pool_mutex was temporarily released, + or NULL if the LRU list should not be used */ +{ + buf_block_t* block; + + ut_ad(buf_pool_mutex_own()); + ut_ad(!mutex_own(&buf_pool_zip_mutex)); + + if (i < BUF_BUDDY_SIZES) { + /* Try to allocate from the buddy system. */ + block = buf_buddy_alloc_zip(i); + + if (block) { + + goto func_exit; + } + } + + /* Try allocating from the buf_pool->free list. */ + block = buf_LRU_get_free_only(); + + if (block) { + + goto alloc_big; + } + + if (!lru) { + + return(NULL); + } + + /* Try replacing an uncompressed page in the buffer pool. */ + buf_pool_mutex_exit(); + block = buf_LRU_get_free_block(0); + *lru = TRUE; + buf_pool_mutex_enter(); + +alloc_big: + buf_buddy_block_register(block); + + block = buf_buddy_alloc_from(block->frame, i, BUF_BUDDY_SIZES); + +func_exit: + buf_buddy_stat[i].used++; + return(block); +} + +/************************************************************************** +Try to relocate the control block of a compressed page. */ +static +ibool +buf_buddy_relocate_block( +/*=====================*/ + /* out: TRUE if relocated */ + buf_page_t* bpage, /* in: block to relocate */ + buf_page_t* dpage) /* in: free block to relocate to */ +{ + buf_page_t* b; + + ut_ad(buf_pool_mutex_own()); + + switch (buf_page_get_state(bpage)) { + case BUF_BLOCK_ZIP_FREE: + case BUF_BLOCK_NOT_USED: + case BUF_BLOCK_READY_FOR_USE: + case BUF_BLOCK_FILE_PAGE: + case BUF_BLOCK_MEMORY: + case BUF_BLOCK_REMOVE_HASH: + ut_error; + case BUF_BLOCK_ZIP_DIRTY: + /* Cannot relocate dirty pages. */ + return(FALSE); + + case BUF_BLOCK_ZIP_PAGE: + break; + } + + mutex_enter(&buf_pool_zip_mutex); + + if (!buf_page_can_relocate(bpage)) { + mutex_exit(&buf_pool_zip_mutex); + return(FALSE); + } + + buf_relocate(bpage, dpage); + ut_d(bpage->state = BUF_BLOCK_ZIP_FREE); + + /* relocate buf_pool->zip_clean */ + b = UT_LIST_GET_PREV(list, dpage); + UT_LIST_REMOVE(list, buf_pool->zip_clean, dpage); + + if (b) { + UT_LIST_INSERT_AFTER(list, buf_pool->zip_clean, b, dpage); + } else { + UT_LIST_ADD_FIRST(list, buf_pool->zip_clean, dpage); + } + + mutex_exit(&buf_pool_zip_mutex); + return(TRUE); +} + +/************************************************************************** +Try to relocate a block. */ +static +ibool +buf_buddy_relocate( +/*===============*/ + /* out: TRUE if relocated */ + void* src, /* in: block to relocate */ + void* dst, /* in: free block to relocate to */ + ulint i) /* in: index of buf_pool->zip_free[] */ +{ + buf_page_t* bpage; + const ulint size = BUF_BUDDY_LOW << i; + ullint usec = ut_time_us(NULL); + + ut_ad(buf_pool_mutex_own()); + ut_ad(!mutex_own(&buf_pool_zip_mutex)); + ut_ad(!ut_align_offset(src, size)); + ut_ad(!ut_align_offset(dst, size)); + UNIV_MEM_ASSERT_W(dst, size); + + /* We assume that all memory from buf_buddy_alloc() + is used for either compressed pages or buf_page_t + objects covering compressed pages. */ + + /* We look inside the allocated objects returned by + buf_buddy_alloc() and assume that anything of + PAGE_ZIP_MIN_SIZE or larger is a compressed page that contains + a valid space_id and page_no in the page header. Should the + fields be invalid, we will be unable to relocate the block. + We also assume that anything that fits sizeof(buf_page_t) + actually is a properly initialized buf_page_t object. */ + + if (size >= PAGE_ZIP_MIN_SIZE) { + /* This is a compressed page. */ + mutex_t* mutex; + + /* The src block may be split into smaller blocks, + some of which may be free. Thus, the + mach_read_from_4() calls below may attempt to read + from free memory. The memory is "owned" by the buddy + allocator (and it has been allocated from the buffer + pool), so there is nothing wrong about this. The + mach_read_from_4() calls here will only trigger bogus + Valgrind memcheck warnings in UNIV_DEBUG_VALGRIND builds. */ + bpage = buf_page_hash_get( + mach_read_from_4((const byte*) src + + FIL_PAGE_ARCH_LOG_NO_OR_SPACE_ID), + mach_read_from_4((const byte*) src + + FIL_PAGE_OFFSET)); + + if (!bpage || bpage->zip.data != src) { + /* The block has probably been freshly + allocated by buf_LRU_get_free_block() but not + added to buf_pool->page_hash yet. Obviously, + it cannot be relocated. */ + + return(FALSE); + } + + if (page_zip_get_size(&bpage->zip) != size) { + /* The block is of different size. We would + have to relocate all blocks covered by src. + For the sake of simplicity, give up. */ + ut_ad(page_zip_get_size(&bpage->zip) < size); + + return(FALSE); + } + + /* The block must have been allocated, but it may + contain uninitialized data. */ + UNIV_MEM_ASSERT_W(src, size); + + mutex = buf_page_get_mutex(bpage); + + mutex_enter(mutex); + + if (buf_page_can_relocate(bpage)) { + /* Relocate the compressed page. */ + ut_a(bpage->zip.data == src); + memcpy(dst, src, size); + bpage->zip.data = dst; + mutex_exit(mutex); +success: + UNIV_MEM_INVALID(src, size); + { + buf_buddy_stat_t* buddy_stat + = &buf_buddy_stat[i]; + buddy_stat->relocated++; + buddy_stat->relocated_usec + += ut_time_us(NULL) - usec; + } + return(TRUE); + } + + mutex_exit(mutex); + } else if (i == buf_buddy_get_slot(sizeof(buf_page_t))) { + /* This must be a buf_page_t object. */ + UNIV_MEM_ASSERT_RW(src, size); + if (buf_buddy_relocate_block(src, dst)) { + + goto success; + } + } + + return(FALSE); +} + +/************************************************************************** +Deallocate a block. */ +UNIV_INTERN +void +buf_buddy_free_low( +/*===============*/ + void* buf, /* in: block to be freed, must not be + pointed to by the buffer pool */ + ulint i) /* in: index of buf_pool->zip_free[] */ +{ + buf_page_t* bpage; + buf_page_t* buddy; + + ut_ad(buf_pool_mutex_own()); + ut_ad(!mutex_own(&buf_pool_zip_mutex)); + ut_ad(i <= BUF_BUDDY_SIZES); + ut_ad(buf_buddy_stat[i].used > 0); + + buf_buddy_stat[i].used--; +recombine: + UNIV_MEM_ASSERT_AND_ALLOC(buf, BUF_BUDDY_LOW << i); + ut_d(((buf_page_t*) buf)->state = BUF_BLOCK_ZIP_FREE); + + if (i == BUF_BUDDY_SIZES) { + buf_buddy_block_free(buf); + return; + } + + ut_ad(i < BUF_BUDDY_SIZES); + ut_ad(buf == ut_align_down(buf, BUF_BUDDY_LOW << i)); + ut_ad(!buf_pool_contains_zip(buf)); + + /* Try to combine adjacent blocks. */ + + buddy = (buf_page_t*) buf_buddy_get(((byte*) buf), BUF_BUDDY_LOW << i); + +#ifndef UNIV_DEBUG_VALGRIND + /* Valgrind would complain about accessing free memory. */ + + if (buddy->state != BUF_BLOCK_ZIP_FREE) { + + goto buddy_nonfree; + } + + /* The field buddy->state can only be trusted for free blocks. + If buddy->state == BUF_BLOCK_ZIP_FREE, the block is free if + it is in the free list. */ +#endif /* !UNIV_DEBUG_VALGRIND */ + + for (bpage = UT_LIST_GET_FIRST(buf_pool->zip_free[i]); bpage; ) { + UNIV_MEM_VALID(bpage, BUF_BUDDY_LOW << i); + ut_ad(buf_page_get_state(bpage) == BUF_BLOCK_ZIP_FREE); + + if (bpage == buddy) { +buddy_free: + /* The buddy is free: recombine */ + buf_buddy_remove_from_free(bpage, i); +buddy_free2: + ut_ad(buf_page_get_state(buddy) == BUF_BLOCK_ZIP_FREE); + ut_ad(!buf_pool_contains_zip(buddy)); + i++; + buf = ut_align_down(buf, BUF_BUDDY_LOW << i); + + goto recombine; + } + + ut_a(bpage != buf); + + { + buf_page_t* next = UT_LIST_GET_NEXT(list, bpage); + UNIV_MEM_ASSERT_AND_FREE(bpage, BUF_BUDDY_LOW << i); + bpage = next; + } + } + +#ifndef UNIV_DEBUG_VALGRIND +buddy_nonfree: + /* Valgrind would complain about accessing free memory. */ + ut_d(UT_LIST_VALIDATE(list, buf_page_t, buf_pool->zip_free[i])); +#endif /* UNIV_DEBUG_VALGRIND */ + + /* The buddy is not free. Is there a free block of this size? */ + bpage = UT_LIST_GET_FIRST(buf_pool->zip_free[i]); + + if (bpage) { + /* Remove the block from the free list, because a successful + buf_buddy_relocate() will overwrite bpage->list. */ + + UNIV_MEM_VALID(bpage, BUF_BUDDY_LOW << i); + buf_buddy_remove_from_free(bpage, i); + + /* Try to relocate the buddy of buf to the free block. */ + if (buf_buddy_relocate(buddy, bpage, i)) { + + ut_d(buddy->state = BUF_BLOCK_ZIP_FREE); + goto buddy_free2; + } + + buf_buddy_add_to_free(bpage, i); + + /* Try to relocate the buddy of the free block to buf. */ + buddy = (buf_page_t*) buf_buddy_get(((byte*) bpage), + BUF_BUDDY_LOW << i); + +#if defined UNIV_DEBUG && !defined UNIV_DEBUG_VALGRIND + { + const buf_page_t* b; + + /* The buddy must not be (completely) free, because + we always recombine adjacent free blocks. + (Parts of the buddy can be free in + buf_pool->zip_free[j] with j < i.)*/ + for (b = UT_LIST_GET_FIRST(buf_pool->zip_free[i]); + b; b = UT_LIST_GET_NEXT(list, b)) { + + ut_a(b != buddy); + } + } +#endif /* UNIV_DEBUG && !UNIV_DEBUG_VALGRIND */ + + if (buf_buddy_relocate(buddy, buf, i)) { + + buf = bpage; + UNIV_MEM_VALID(bpage, BUF_BUDDY_LOW << i); + ut_d(buddy->state = BUF_BLOCK_ZIP_FREE); + goto buddy_free; + } + } + + /* Free the block to the buddy list. */ + bpage = buf; +#ifdef UNIV_DEBUG + if (i < buf_buddy_get_slot(PAGE_ZIP_MIN_SIZE)) { + /* This area has most likely been allocated for at + least one compressed-only block descriptor. Check + that there are no live objects in the area. This is + not a complete check: it may yield false positives as + well as false negatives. Also, due to buddy blocks + being recombined, it is possible (although unlikely) + that this branch is never reached. */ + + char* c; + +# ifndef UNIV_DEBUG_VALGRIND + /* Valgrind would complain about accessing + uninitialized memory. Besides, Valgrind performs a + more exhaustive check, at every memory access. */ + const buf_page_t* b = buf; + const buf_page_t* const b_end = (buf_page_t*) + ((char*) b + (BUF_BUDDY_LOW << i)); + + for (; b < b_end; b++) { + /* Avoid false positives (and cause false + negatives) by checking for b->space < 1000. */ + + if ((b->state == BUF_BLOCK_ZIP_PAGE + || b->state == BUF_BLOCK_ZIP_DIRTY) + && b->space > 0 && b->space < 1000) { + fprintf(stderr, + "buddy dirty %p %u (%u,%u) %p,%lu\n", + (void*) b, + b->state, b->space, b->offset, + buf, i); + } + } +# endif /* !UNIV_DEBUG_VALGRIND */ + + /* Scramble the block. This should make any pointers + invalid and trigger a segmentation violation. Because + the scrambling can be reversed, it may be possible to + track down the object pointing to the freed data by + dereferencing the unscrambled bpage->LRU or + bpage->list pointers. */ + for (c = (char*) buf + (BUF_BUDDY_LOW << i); + c-- > (char*) buf; ) { + *c = ~*c ^ i; + } + } else { + /* Fill large blocks with a constant pattern. */ + memset(bpage, i, BUF_BUDDY_LOW << i); + } +#endif /* UNIV_DEBUG */ + bpage->state = BUF_BLOCK_ZIP_FREE; + buf_buddy_add_to_free(bpage, i); +} === added file 'storage/xtradb/buf/buf0buf.c' --- a/storage/xtradb/buf/buf0buf.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/buf/buf0buf.c 2009-05-04 04:32:30 +0000 @@ -0,0 +1,3920 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. +Copyright (c) 2008, Google Inc. + +Portions of this file contain modifications contributed and copyrighted by +Google, Inc. Those modifications are gratefully acknowledged and are described +briefly in the InnoDB documentation. The contributions by Google are +incorporated with their permission, and subject to the conditions contained in +the file COPYING.Google. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +The database buffer buf_pool + +Created 11/5/1995 Heikki Tuuri +*******************************************************/ + +#include "buf0buf.h" + +#ifdef UNIV_NONINL +#include "buf0buf.ic" +#endif + +#include "buf0buddy.h" +#include "mem0mem.h" +#include "btr0btr.h" +#include "fil0fil.h" +#include "lock0lock.h" +#include "btr0sea.h" +#include "ibuf0ibuf.h" +#include "dict0dict.h" +#include "log0recv.h" +#include "trx0undo.h" +#include "srv0srv.h" +#include "page0zip.h" + +/* + IMPLEMENTATION OF THE BUFFER POOL + ================================= + +Performance improvement: +------------------------ +Thread scheduling in NT may be so slow that the OS wait mechanism should +not be used even in waiting for disk reads to complete. +Rather, we should put waiting query threads to the queue of +waiting jobs, and let the OS thread do something useful while the i/o +is processed. In this way we could remove most OS thread switches in +an i/o-intensive benchmark like TPC-C. + +A possibility is to put a user space thread library between the database +and NT. User space thread libraries might be very fast. + +SQL Server 7.0 can be configured to use 'fibers' which are lightweight +threads in NT. These should be studied. + + Buffer frames and blocks + ------------------------ +Following the terminology of Gray and Reuter, we call the memory +blocks where file pages are loaded buffer frames. For each buffer +frame there is a control block, or shortly, a block, in the buffer +control array. The control info which does not need to be stored +in the file along with the file page, resides in the control block. + + Buffer pool struct + ------------------ +The buffer buf_pool contains a single mutex which protects all the +control data structures of the buf_pool. The content of a buffer frame is +protected by a separate read-write lock in its control block, though. +These locks can be locked and unlocked without owning the buf_pool mutex. +The OS events in the buf_pool struct can be waited for without owning the +buf_pool mutex. + +The buf_pool mutex is a hot-spot in main memory, causing a lot of +memory bus traffic on multiprocessor systems when processors +alternately access the mutex. On our Pentium, the mutex is accessed +maybe every 10 microseconds. We gave up the solution to have mutexes +for each control block, for instance, because it seemed to be +complicated. + +A solution to reduce mutex contention of the buf_pool mutex is to +create a separate mutex for the page hash table. On Pentium, +accessing the hash table takes 2 microseconds, about half +of the total buf_pool mutex hold time. + + Control blocks + -------------- + +The control block contains, for instance, the bufferfix count +which is incremented when a thread wants a file page to be fixed +in a buffer frame. The bufferfix operation does not lock the +contents of the frame, however. For this purpose, the control +block contains a read-write lock. + +The buffer frames have to be aligned so that the start memory +address of a frame is divisible by the universal page size, which +is a power of two. + +We intend to make the buffer buf_pool size on-line reconfigurable, +that is, the buf_pool size can be changed without closing the database. +Then the database administarator may adjust it to be bigger +at night, for example. The control block array must +contain enough control blocks for the maximum buffer buf_pool size +which is used in the particular database. +If the buf_pool size is cut, we exploit the virtual memory mechanism of +the OS, and just refrain from using frames at high addresses. Then the OS +can swap them to disk. + +The control blocks containing file pages are put to a hash table +according to the file address of the page. +We could speed up the access to an individual page by using +"pointer swizzling": we could replace the page references on +non-leaf index pages by direct pointers to the page, if it exists +in the buf_pool. We could make a separate hash table where we could +chain all the page references in non-leaf pages residing in the buf_pool, +using the page reference as the hash key, +and at the time of reading of a page update the pointers accordingly. +Drawbacks of this solution are added complexity and, +possibly, extra space required on non-leaf pages for memory pointers. +A simpler solution is just to speed up the hash table mechanism +in the database, using tables whose size is a power of 2. + + Lists of blocks + --------------- + +There are several lists of control blocks. + +The free list (buf_pool->free) contains blocks which are currently not +used. + +The common LRU list contains all the blocks holding a file page +except those for which the bufferfix count is non-zero. +The pages are in the LRU list roughly in the order of the last +access to the page, so that the oldest pages are at the end of the +list. We also keep a pointer to near the end of the LRU list, +which we can use when we want to artificially age a page in the +buf_pool. This is used if we know that some page is not needed +again for some time: we insert the block right after the pointer, +causing it to be replaced sooner than would noramlly be the case. +Currently this aging mechanism is used for read-ahead mechanism +of pages, and it can also be used when there is a scan of a full +table which cannot fit in the memory. Putting the pages near the +of the LRU list, we make sure that most of the buf_pool stays in the +main memory, undisturbed. + +The unzip_LRU list contains a subset of the common LRU list. The +blocks on the unzip_LRU list hold a compressed file page and the +corresponding uncompressed page frame. A block is in unzip_LRU if and +only if the predicate buf_page_belongs_to_unzip_LRU(&block->page) +holds. The blocks in unzip_LRU will be in same order as they are in +the common LRU list. That is, each manipulation of the common LRU +list will result in the same manipulation of the unzip_LRU list. + +The chain of modified blocks (buf_pool->flush_list) contains the blocks +holding file pages that have been modified in the memory +but not written to disk yet. The block with the oldest modification +which has not yet been written to disk is at the end of the chain. + +The chain of unmodified compressed blocks (buf_pool->zip_clean) +contains the control blocks (buf_page_t) of those compressed pages +that are not in buf_pool->flush_list and for which no uncompressed +page has been allocated in the buffer pool. The control blocks for +uncompressed pages are accessible via buf_block_t objects that are +reachable via buf_pool->chunks[]. + +The chains of free memory blocks (buf_pool->zip_free[]) are used by +the buddy allocator (buf0buddy.c) to keep track of currently unused +memory blocks of size sizeof(buf_page_t)..UNIV_PAGE_SIZE / 2. These +blocks are inside the UNIV_PAGE_SIZE-sized memory blocks of type +BUF_BLOCK_MEMORY that the buddy allocator requests from the buffer +pool. The buddy allocator is solely used for allocating control +blocks for compressed pages (buf_page_t) and compressed page frames. + + Loading a file page + ------------------- + +First, a victim block for replacement has to be found in the +buf_pool. It is taken from the free list or searched for from the +end of the LRU-list. An exclusive lock is reserved for the frame, +the io_fix field is set in the block fixing the block in buf_pool, +and the io-operation for loading the page is queued. The io-handler thread +releases the X-lock on the frame and resets the io_fix field +when the io operation completes. + +A thread may request the above operation using the function +buf_page_get(). It may then continue to request a lock on the frame. +The lock is granted when the io-handler releases the x-lock. + + Read-ahead + ---------- + +The read-ahead mechanism is intended to be intelligent and +isolated from the semantically higher levels of the database +index management. From the higher level we only need the +information if a file page has a natural successor or +predecessor page. On the leaf level of a B-tree index, +these are the next and previous pages in the natural +order of the pages. + +Let us first explain the read-ahead mechanism when the leafs +of a B-tree are scanned in an ascending or descending order. +When a read page is the first time referenced in the buf_pool, +the buffer manager checks if it is at the border of a so-called +linear read-ahead area. The tablespace is divided into these +areas of size 64 blocks, for example. So if the page is at the +border of such an area, the read-ahead mechanism checks if +all the other blocks in the area have been accessed in an +ascending or descending order. If this is the case, the system +looks at the natural successor or predecessor of the page, +checks if that is at the border of another area, and in this case +issues read-requests for all the pages in that area. Maybe +we could relax the condition that all the pages in the area +have to be accessed: if data is deleted from a table, there may +appear holes of unused pages in the area. + +A different read-ahead mechanism is used when there appears +to be a random access pattern to a file. +If a new page is referenced in the buf_pool, and several pages +of its random access area (for instance, 32 consecutive pages +in a tablespace) have recently been referenced, we may predict +that the whole area may be needed in the near future, and issue +the read requests for the whole area. +*/ + +/* Value in microseconds */ +static const int WAIT_FOR_READ = 5000; + +/* The buffer buf_pool of the database */ +UNIV_INTERN buf_pool_t* buf_pool = NULL; + +/* mutex protecting the buffer pool struct and control blocks, except the +read-write lock in them */ +UNIV_INTERN mutex_t buf_pool_mutex; +/* mutex protecting the control blocks of compressed-only pages +(of type buf_page_t, not buf_block_t) */ +UNIV_INTERN mutex_t buf_pool_zip_mutex; + +#if defined UNIV_DEBUG || defined UNIV_BUF_DEBUG +static ulint buf_dbg_counter = 0; /* This is used to insert validation + operations in excution in the + debug version */ +/** Flag to forbid the release of the buffer pool mutex. +Protected by buf_pool_mutex. */ +UNIV_INTERN ulint buf_pool_mutex_exit_forbidden = 0; +#endif /* UNIV_DEBUG || UNIV_BUF_DEBUG */ +#ifdef UNIV_DEBUG +/* If this is set TRUE, the program prints info whenever +read-ahead or flush occurs */ +UNIV_INTERN ibool buf_debug_prints = FALSE; +#endif /* UNIV_DEBUG */ + +/* A chunk of buffers. The buffer pool is allocated in chunks. */ +struct buf_chunk_struct{ + ulint mem_size; /* allocated size of the chunk */ + ulint size; /* size of frames[] and blocks[] */ + void* mem; /* pointer to the memory area which + was allocated for the frames */ + buf_block_t* blocks; /* array of buffer control blocks */ +}; + +/************************************************************************ +Calculates a page checksum which is stored to the page when it is written +to a file. Note that we must be careful to calculate the same value on +32-bit and 64-bit architectures. */ +UNIV_INTERN +ulint +buf_calc_page_new_checksum( +/*=======================*/ + /* out: checksum */ + const byte* page) /* in: buffer page */ +{ + ulint checksum; + + /* Since the field FIL_PAGE_FILE_FLUSH_LSN, and in versions <= 4.1.x + ..._ARCH_LOG_NO, are written outside the buffer pool to the first + pages of data files, we have to skip them in the page checksum + calculation. + We must also skip the field FIL_PAGE_SPACE_OR_CHKSUM where the + checksum is stored, and also the last 8 bytes of page because + there we store the old formula checksum. */ + + checksum = ut_fold_binary(page + FIL_PAGE_OFFSET, + FIL_PAGE_FILE_FLUSH_LSN - FIL_PAGE_OFFSET) + + ut_fold_binary(page + FIL_PAGE_DATA, + UNIV_PAGE_SIZE - FIL_PAGE_DATA + - FIL_PAGE_END_LSN_OLD_CHKSUM); + checksum = checksum & 0xFFFFFFFFUL; + + return(checksum); +} + +/************************************************************************ +In versions < 4.0.14 and < 4.1.1 there was a bug that the checksum only +looked at the first few bytes of the page. This calculates that old +checksum. +NOTE: we must first store the new formula checksum to +FIL_PAGE_SPACE_OR_CHKSUM before calculating and storing this old checksum +because this takes that field as an input! */ +UNIV_INTERN +ulint +buf_calc_page_old_checksum( +/*=======================*/ + /* out: checksum */ + const byte* page) /* in: buffer page */ +{ + ulint checksum; + + checksum = ut_fold_binary(page, FIL_PAGE_FILE_FLUSH_LSN); + + checksum = checksum & 0xFFFFFFFFUL; + + return(checksum); +} + +/************************************************************************ +Checks if a page is corrupt. */ +UNIV_INTERN +ibool +buf_page_is_corrupted( +/*==================*/ + /* out: TRUE if corrupted */ + const byte* read_buf, /* in: a database page */ + ulint zip_size) /* in: size of compressed page; + 0 for uncompressed pages */ +{ + ulint checksum_field; + ulint old_checksum_field; +#ifndef UNIV_HOTBACKUP + ib_uint64_t current_lsn; +#endif + if (UNIV_LIKELY(!zip_size) + && memcmp(read_buf + FIL_PAGE_LSN + 4, + read_buf + UNIV_PAGE_SIZE + - FIL_PAGE_END_LSN_OLD_CHKSUM + 4, 4)) { + + /* Stored log sequence numbers at the start and the end + of page do not match */ + + return(TRUE); + } + +#ifndef UNIV_HOTBACKUP + if (recv_lsn_checks_on && log_peek_lsn(&current_lsn)) { + if (current_lsn < mach_read_ull(read_buf + FIL_PAGE_LSN)) { + ut_print_timestamp(stderr); + + fprintf(stderr, + " InnoDB: Error: page %lu log sequence number" + " %llu\n" + "InnoDB: is in the future! Current system " + "log sequence number %llu.\n" + "InnoDB: Your database may be corrupt or " + "you may have copied the InnoDB\n" + "InnoDB: tablespace but not the InnoDB " + "log files. See\n" + "InnoDB: http://dev.mysql.com/doc/refman/" + "5.1/en/forcing-recovery.html\n" + "InnoDB: for more information.\n", + (ulong) mach_read_from_4(read_buf + + FIL_PAGE_OFFSET), + mach_read_ull(read_buf + FIL_PAGE_LSN), + current_lsn); + } + } +#endif + + /* If we use checksums validation, make additional check before + returning TRUE to ensure that the checksum is not equal to + BUF_NO_CHECKSUM_MAGIC which might be stored by InnoDB with checksums + disabled. Otherwise, skip checksum calculation and return FALSE */ + + if (UNIV_LIKELY(srv_use_checksums)) { + checksum_field = mach_read_from_4(read_buf + + FIL_PAGE_SPACE_OR_CHKSUM); + + if (UNIV_UNLIKELY(zip_size)) { + return(checksum_field != BUF_NO_CHECKSUM_MAGIC + && checksum_field + != page_zip_calc_checksum(read_buf, zip_size)); + } + + old_checksum_field = mach_read_from_4( + read_buf + UNIV_PAGE_SIZE + - FIL_PAGE_END_LSN_OLD_CHKSUM); + + /* There are 2 valid formulas for old_checksum_field: + + 1. Very old versions of InnoDB only stored 8 byte lsn to the + start and the end of the page. + + 2. Newer InnoDB versions store the old formula checksum + there. */ + + if (old_checksum_field != mach_read_from_4(read_buf + + FIL_PAGE_LSN) + && old_checksum_field != BUF_NO_CHECKSUM_MAGIC + && old_checksum_field + != buf_calc_page_old_checksum(read_buf)) { + + return(TRUE); + } + + /* InnoDB versions < 4.0.14 and < 4.1.1 stored the space id + (always equal to 0), to FIL_PAGE_SPACE_OR_CHKSUM */ + + if (checksum_field != 0 + && checksum_field != BUF_NO_CHECKSUM_MAGIC + && checksum_field + != buf_calc_page_new_checksum(read_buf)) { + + return(TRUE); + } + } + + return(FALSE); +} + +/************************************************************************ +Prints a page to stderr. */ +UNIV_INTERN +void +buf_page_print( +/*===========*/ + const byte* read_buf, /* in: a database page */ + ulint zip_size) /* in: compressed page size, or + 0 for uncompressed pages */ +{ + dict_index_t* index; + ulint checksum; + ulint old_checksum; + ulint size = zip_size; + + if (!size) { + size = UNIV_PAGE_SIZE; + } + + ut_print_timestamp(stderr); + fprintf(stderr, " InnoDB: Page dump in ascii and hex (%lu bytes):\n", + (ulong) size); + ut_print_buf(stderr, read_buf, size); + fputs("\nInnoDB: End of page dump\n", stderr); + + if (zip_size) { + /* Print compressed page. */ + + switch (fil_page_get_type(read_buf)) { + case FIL_PAGE_TYPE_ZBLOB: + case FIL_PAGE_TYPE_ZBLOB2: + checksum = srv_use_checksums + ? page_zip_calc_checksum(read_buf, zip_size) + : BUF_NO_CHECKSUM_MAGIC; + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: Compressed BLOB page" + " checksum %lu, stored %lu\n" + "InnoDB: Page lsn %lu %lu\n" + "InnoDB: Page number (if stored" + " to page already) %lu,\n" + "InnoDB: space id (if stored" + " to page already) %lu\n", + (ulong) checksum, + (ulong) mach_read_from_4( + read_buf + FIL_PAGE_SPACE_OR_CHKSUM), + (ulong) mach_read_from_4( + read_buf + FIL_PAGE_LSN), + (ulong) mach_read_from_4( + read_buf + (FIL_PAGE_LSN + 4)), + (ulong) mach_read_from_4( + read_buf + FIL_PAGE_OFFSET), + (ulong) mach_read_from_4( + read_buf + + FIL_PAGE_ARCH_LOG_NO_OR_SPACE_ID)); + return; + default: + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: unknown page type %lu," + " assuming FIL_PAGE_INDEX\n", + fil_page_get_type(read_buf)); + /* fall through */ + case FIL_PAGE_INDEX: + checksum = srv_use_checksums + ? page_zip_calc_checksum(read_buf, zip_size) + : BUF_NO_CHECKSUM_MAGIC; + + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: Compressed page checksum %lu," + " stored %lu\n" + "InnoDB: Page lsn %lu %lu\n" + "InnoDB: Page number (if stored" + " to page already) %lu,\n" + "InnoDB: space id (if stored" + " to page already) %lu\n", + (ulong) checksum, + (ulong) mach_read_from_4( + read_buf + FIL_PAGE_SPACE_OR_CHKSUM), + (ulong) mach_read_from_4( + read_buf + FIL_PAGE_LSN), + (ulong) mach_read_from_4( + read_buf + (FIL_PAGE_LSN + 4)), + (ulong) mach_read_from_4( + read_buf + FIL_PAGE_OFFSET), + (ulong) mach_read_from_4( + read_buf + + FIL_PAGE_ARCH_LOG_NO_OR_SPACE_ID)); + return; + case FIL_PAGE_TYPE_XDES: + /* This is an uncompressed page. */ + break; + } + } + + checksum = srv_use_checksums + ? buf_calc_page_new_checksum(read_buf) : BUF_NO_CHECKSUM_MAGIC; + old_checksum = srv_use_checksums + ? buf_calc_page_old_checksum(read_buf) : BUF_NO_CHECKSUM_MAGIC; + + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: Page checksum %lu, prior-to-4.0.14-form" + " checksum %lu\n" + "InnoDB: stored checksum %lu, prior-to-4.0.14-form" + " stored checksum %lu\n" + "InnoDB: Page lsn %lu %lu, low 4 bytes of lsn" + " at page end %lu\n" + "InnoDB: Page number (if stored to page already) %lu,\n" + "InnoDB: space id (if created with >= MySQL-4.1.1" + " and stored already) %lu\n", + (ulong) checksum, (ulong) old_checksum, + (ulong) mach_read_from_4(read_buf + FIL_PAGE_SPACE_OR_CHKSUM), + (ulong) mach_read_from_4(read_buf + UNIV_PAGE_SIZE + - FIL_PAGE_END_LSN_OLD_CHKSUM), + (ulong) mach_read_from_4(read_buf + FIL_PAGE_LSN), + (ulong) mach_read_from_4(read_buf + FIL_PAGE_LSN + 4), + (ulong) mach_read_from_4(read_buf + UNIV_PAGE_SIZE + - FIL_PAGE_END_LSN_OLD_CHKSUM + 4), + (ulong) mach_read_from_4(read_buf + FIL_PAGE_OFFSET), + (ulong) mach_read_from_4(read_buf + + FIL_PAGE_ARCH_LOG_NO_OR_SPACE_ID)); + + if (mach_read_from_2(read_buf + TRX_UNDO_PAGE_HDR + TRX_UNDO_PAGE_TYPE) + == TRX_UNDO_INSERT) { + fprintf(stderr, + "InnoDB: Page may be an insert undo log page\n"); + } else if (mach_read_from_2(read_buf + TRX_UNDO_PAGE_HDR + + TRX_UNDO_PAGE_TYPE) + == TRX_UNDO_UPDATE) { + fprintf(stderr, + "InnoDB: Page may be an update undo log page\n"); + } + + switch (fil_page_get_type(read_buf)) { + case FIL_PAGE_INDEX: + fprintf(stderr, + "InnoDB: Page may be an index page where" + " index id is %lu %lu\n", + (ulong) ut_dulint_get_high( + btr_page_get_index_id(read_buf)), + (ulong) ut_dulint_get_low( + btr_page_get_index_id(read_buf))); + +#ifdef UNIV_HOTBACKUP + /* If the code is in ibbackup, dict_sys may be uninitialized, + i.e., NULL */ + + if (dict_sys == NULL) { + break; + } +#endif /* UNIV_HOTBACKUP */ + + index = dict_index_find_on_id_low( + btr_page_get_index_id(read_buf)); + if (index) { + fputs("InnoDB: (", stderr); + dict_index_name_print(stderr, NULL, index); + fputs(")\n", stderr); + } + break; + case FIL_PAGE_INODE: + fputs("InnoDB: Page may be an 'inode' page\n", stderr); + break; + case FIL_PAGE_IBUF_FREE_LIST: + fputs("InnoDB: Page may be an insert buffer free list page\n", + stderr); + break; + case FIL_PAGE_TYPE_ALLOCATED: + fputs("InnoDB: Page may be a freshly allocated page\n", + stderr); + break; + case FIL_PAGE_IBUF_BITMAP: + fputs("InnoDB: Page may be an insert buffer bitmap page\n", + stderr); + break; + case FIL_PAGE_TYPE_SYS: + fputs("InnoDB: Page may be a system page\n", + stderr); + break; + case FIL_PAGE_TYPE_TRX_SYS: + fputs("InnoDB: Page may be a transaction system page\n", + stderr); + break; + case FIL_PAGE_TYPE_FSP_HDR: + fputs("InnoDB: Page may be a file space header page\n", + stderr); + break; + case FIL_PAGE_TYPE_XDES: + fputs("InnoDB: Page may be an extent descriptor page\n", + stderr); + break; + case FIL_PAGE_TYPE_BLOB: + fputs("InnoDB: Page may be a BLOB page\n", + stderr); + break; + case FIL_PAGE_TYPE_ZBLOB: + case FIL_PAGE_TYPE_ZBLOB2: + fputs("InnoDB: Page may be a compressed BLOB page\n", + stderr); + break; + } +} + +/************************************************************************ +Initializes a buffer control block when the buf_pool is created. */ +static +void +buf_block_init( +/*===========*/ + buf_block_t* block, /* in: pointer to control block */ + byte* frame) /* in: pointer to buffer frame */ +{ + UNIV_MEM_DESC(frame, UNIV_PAGE_SIZE, block); + + block->frame = frame; + + block->page.state = BUF_BLOCK_NOT_USED; + block->page.buf_fix_count = 0; + block->page.io_fix = BUF_IO_NONE; + + block->modify_clock = 0; + +#ifdef UNIV_DEBUG_FILE_ACCESSES + block->page.file_page_was_freed = FALSE; +#endif /* UNIV_DEBUG_FILE_ACCESSES */ + + block->check_index_page_at_flush = FALSE; + block->index = NULL; + +#ifdef UNIV_DEBUG + block->page.in_page_hash = FALSE; + block->page.in_zip_hash = FALSE; + block->page.in_flush_list = FALSE; + block->page.in_free_list = FALSE; + block->in_unzip_LRU_list = FALSE; +#endif /* UNIV_DEBUG */ + block->page.in_LRU_list = FALSE; +#if defined UNIV_AHI_DEBUG || defined UNIV_DEBUG + block->n_pointers = 0; +#endif /* UNIV_AHI_DEBUG || UNIV_DEBUG */ + page_zip_des_init(&block->page.zip); + + mutex_create(&block->mutex, SYNC_BUF_BLOCK); + + rw_lock_create(&block->lock, SYNC_LEVEL_VARYING); + ut_ad(rw_lock_validate(&(block->lock))); + +#ifdef UNIV_SYNC_DEBUG + rw_lock_create(&block->debug_latch, SYNC_NO_ORDER_CHECK); +#endif /* UNIV_SYNC_DEBUG */ +} + +/************************************************************************ +Allocates a chunk of buffer frames. */ +static +buf_chunk_t* +buf_chunk_init( +/*===========*/ + /* out: chunk, or NULL on failure */ + buf_chunk_t* chunk, /* out: chunk of buffers */ + ulint mem_size) /* in: requested size in bytes */ +{ + buf_block_t* block; + byte* frame; + ulint i; + + /* Round down to a multiple of page size, + although it already should be. */ + mem_size = ut_2pow_round(mem_size, UNIV_PAGE_SIZE); + /* Reserve space for the block descriptors. */ + mem_size += ut_2pow_round((mem_size / UNIV_PAGE_SIZE) * (sizeof *block) + + (UNIV_PAGE_SIZE - 1), UNIV_PAGE_SIZE); + + chunk->mem_size = mem_size; + chunk->mem = os_mem_alloc_large(&chunk->mem_size); + + if (UNIV_UNLIKELY(chunk->mem == NULL)) { + + return(NULL); + } + + /* Allocate the block descriptors from + the start of the memory block. */ + chunk->blocks = chunk->mem; + + /* Align a pointer to the first frame. Note that when + os_large_page_size is smaller than UNIV_PAGE_SIZE, + we may allocate one fewer block than requested. When + it is bigger, we may allocate more blocks than requested. */ + + frame = ut_align(chunk->mem, UNIV_PAGE_SIZE); + chunk->size = chunk->mem_size / UNIV_PAGE_SIZE + - (frame != chunk->mem); + + /* Subtract the space needed for block descriptors. */ + { + ulint size = chunk->size; + + while (frame < (byte*) (chunk->blocks + size)) { + frame += UNIV_PAGE_SIZE; + size--; + } + + chunk->size = size; + } + + /* Init block structs and assign frames for them. Then we + assign the frames to the first blocks (we already mapped the + memory above). */ + + block = chunk->blocks; + + for (i = chunk->size; i--; ) { + + buf_block_init(block, frame); + +#ifdef HAVE_purify + /* Wipe contents of frame to eliminate a Purify warning */ + memset(block->frame, '\0', UNIV_PAGE_SIZE); +#endif + /* Add the block to the free list */ + UT_LIST_ADD_LAST(list, buf_pool->free, (&block->page)); + ut_d(block->page.in_free_list = TRUE); + + block++; + frame += UNIV_PAGE_SIZE; + } + + return(chunk); +} + +#ifdef UNIV_DEBUG +/************************************************************************* +Finds a block in the given buffer chunk that points to a +given compressed page. */ +static +buf_block_t* +buf_chunk_contains_zip( +/*===================*/ + /* out: buffer block pointing to + the compressed page, or NULL */ + buf_chunk_t* chunk, /* in: chunk being checked */ + const void* data) /* in: pointer to compressed page */ +{ + buf_block_t* block; + ulint i; + + ut_ad(buf_pool); + ut_ad(buf_pool_mutex_own()); + + block = chunk->blocks; + + for (i = chunk->size; i--; block++) { + if (block->page.zip.data == data) { + + return(block); + } + } + + return(NULL); +} + +/************************************************************************* +Finds a block in the buffer pool that points to a +given compressed page. */ +UNIV_INTERN +buf_block_t* +buf_pool_contains_zip( +/*==================*/ + /* out: buffer block pointing to + the compressed page, or NULL */ + const void* data) /* in: pointer to compressed page */ +{ + ulint n; + buf_chunk_t* chunk = buf_pool->chunks; + + for (n = buf_pool->n_chunks; n--; chunk++) { + buf_block_t* block = buf_chunk_contains_zip(chunk, data); + + if (block) { + return(block); + } + } + + return(NULL); +} +#endif /* UNIV_DEBUG */ + +/************************************************************************* +Checks that all file pages in the buffer chunk are in a replaceable state. */ +static +const buf_block_t* +buf_chunk_not_freed( +/*================*/ + /* out: address of a non-free block, + or NULL if all freed */ + buf_chunk_t* chunk) /* in: chunk being checked */ +{ + buf_block_t* block; + ulint i; + + ut_ad(buf_pool); + ut_ad(buf_pool_mutex_own()); + + block = chunk->blocks; + + for (i = chunk->size; i--; block++) { + mutex_enter(&block->mutex); + + if (buf_block_get_state(block) == BUF_BLOCK_FILE_PAGE + && !buf_flush_ready_for_replace(&block->page)) { + + mutex_exit(&block->mutex); + return(block); + } + + mutex_exit(&block->mutex); + } + + return(NULL); +} + +/************************************************************************* +Checks that all blocks in the buffer chunk are in BUF_BLOCK_NOT_USED state. */ +static +ibool +buf_chunk_all_free( +/*===============*/ + /* out: TRUE if all freed */ + const buf_chunk_t* chunk) /* in: chunk being checked */ +{ + const buf_block_t* block; + ulint i; + + ut_ad(buf_pool); + ut_ad(buf_pool_mutex_own()); + + block = chunk->blocks; + + for (i = chunk->size; i--; block++) { + + if (buf_block_get_state(block) != BUF_BLOCK_NOT_USED) { + + return(FALSE); + } + } + + return(TRUE); +} + +/************************************************************************ +Frees a chunk of buffer frames. */ +static +void +buf_chunk_free( +/*===========*/ + buf_chunk_t* chunk) /* out: chunk of buffers */ +{ + buf_block_t* block; + const buf_block_t* block_end; + + ut_ad(buf_pool_mutex_own()); + + block_end = chunk->blocks + chunk->size; + + for (block = chunk->blocks; block < block_end; block++) { + ut_a(buf_block_get_state(block) == BUF_BLOCK_NOT_USED); + ut_a(!block->page.zip.data); + + ut_ad(!block->page.in_LRU_list); + ut_ad(!block->in_unzip_LRU_list); + ut_ad(!block->page.in_flush_list); + /* Remove the block from the free list. */ + ut_ad(block->page.in_free_list); + UT_LIST_REMOVE(list, buf_pool->free, (&block->page)); + + /* Free the latches. */ + mutex_free(&block->mutex); + rw_lock_free(&block->lock); +#ifdef UNIV_SYNC_DEBUG + rw_lock_free(&block->debug_latch); +#endif /* UNIV_SYNC_DEBUG */ + UNIV_MEM_UNDESC(block); + } + + os_mem_free_large(chunk->mem, chunk->mem_size); +} + +/************************************************************************ +Creates the buffer pool. */ +UNIV_INTERN +buf_pool_t* +buf_pool_init(void) +/*===============*/ + /* out, own: buf_pool object, NULL if not + enough memory or error */ +{ + buf_chunk_t* chunk; + ulint i; + + buf_pool = mem_zalloc(sizeof(buf_pool_t)); + + /* 1. Initialize general fields + ------------------------------- */ + mutex_create(&buf_pool_mutex, SYNC_BUF_POOL); + mutex_create(&buf_pool_zip_mutex, SYNC_BUF_BLOCK); + + buf_pool_mutex_enter(); + + buf_pool->n_chunks = 1; + buf_pool->chunks = chunk = mem_alloc(sizeof *chunk); + + UT_LIST_INIT(buf_pool->free); + + if (!buf_chunk_init(chunk, srv_buf_pool_size)) { + mem_free(chunk); + mem_free(buf_pool); + buf_pool = NULL; + return(NULL); + } + + srv_buf_pool_old_size = srv_buf_pool_size; + buf_pool->curr_size = chunk->size; + srv_buf_pool_curr_size = buf_pool->curr_size * UNIV_PAGE_SIZE; + + buf_pool->page_hash = hash_create(2 * buf_pool->curr_size); + buf_pool->zip_hash = hash_create(2 * buf_pool->curr_size); + + buf_pool->last_printout_time = time(NULL); + + /* 2. Initialize flushing fields + -------------------------------- */ + + for (i = BUF_FLUSH_LRU; i < BUF_FLUSH_N_TYPES; i++) { + buf_pool->no_flush[i] = os_event_create(NULL); + } + + buf_pool->ulint_clock = 1; + + /* 3. Initialize LRU fields + --------------------------- */ + /* All fields are initialized by mem_zalloc(). */ + + buf_pool_mutex_exit(); + + btr_search_sys_create(buf_pool->curr_size + * UNIV_PAGE_SIZE / sizeof(void*) / 64); + + /* 4. Initialize the buddy allocator fields */ + /* All fields are initialized by mem_zalloc(). */ + + return(buf_pool); +} + +/************************************************************************ +Frees the buffer pool at shutdown. This must not be invoked before +freeing all mutexes. */ +UNIV_INTERN +void +buf_pool_free(void) +/*===============*/ +{ + buf_chunk_t* chunk; + buf_chunk_t* chunks; + + chunks = buf_pool->chunks; + chunk = chunks + buf_pool->n_chunks; + + while (--chunk >= chunks) { + /* Bypass the checks of buf_chunk_free(), since they + would fail at shutdown. */ + os_mem_free_large(chunk->mem, chunk->mem_size); + } + + buf_pool->n_chunks = 0; +} + + +/************************************************************************ +Drops the adaptive hash index. To prevent a livelock, this function +is only to be called while holding btr_search_latch and while +btr_search_enabled == FALSE. */ +UNIV_INTERN +void +buf_pool_drop_hash_index(void) +/*==========================*/ +{ + ibool released_search_latch; + +#ifdef UNIV_SYNC_DEBUG + ut_ad(rw_lock_own(&btr_search_latch, RW_LOCK_EX)); +#endif /* UNIV_SYNC_DEBUG */ + ut_ad(!btr_search_enabled); + + do { + buf_chunk_t* chunks = buf_pool->chunks; + buf_chunk_t* chunk = chunks + buf_pool->n_chunks; + + released_search_latch = FALSE; + + while (--chunk >= chunks) { + buf_block_t* block = chunk->blocks; + ulint i = chunk->size; + + for (; i--; block++) { + /* block->is_hashed cannot be modified + when we have an x-latch on btr_search_latch; + see the comment in buf0buf.h */ + + if (!block->is_hashed) { + continue; + } + + /* To follow the latching order, we + have to release btr_search_latch + before acquiring block->latch. */ + rw_lock_x_unlock(&btr_search_latch); + /* When we release the search latch, + we must rescan all blocks, because + some may become hashed again. */ + released_search_latch = TRUE; + + rw_lock_x_lock(&block->lock); + + /* This should be guaranteed by the + callers, which will be holding + btr_search_enabled_mutex. */ + ut_ad(!btr_search_enabled); + + /* Because we did not buffer-fix the + block by calling buf_block_get_gen(), + it is possible that the block has been + allocated for some other use after + btr_search_latch was released above. + We do not care which file page the + block is mapped to. All we want to do + is to drop any hash entries referring + to the page. */ + + /* It is possible that + block->page.state != BUF_FILE_PAGE. + Even that does not matter, because + btr_search_drop_page_hash_index() will + check block->is_hashed before doing + anything. block->is_hashed can only + be set on uncompressed file pages. */ + + btr_search_drop_page_hash_index(block); + + rw_lock_x_unlock(&block->lock); + + rw_lock_x_lock(&btr_search_latch); + + ut_ad(!btr_search_enabled); + } + } + } while (released_search_latch); +} + +/************************************************************************ +Relocate a buffer control block. Relocates the block on the LRU list +and in buf_pool->page_hash. Does not relocate bpage->list. +The caller must take care of relocating bpage->list. */ +UNIV_INTERN +void +buf_relocate( +/*=========*/ + buf_page_t* bpage, /* in/out: control block being relocated; + buf_page_get_state(bpage) must be + BUF_BLOCK_ZIP_DIRTY or BUF_BLOCK_ZIP_PAGE */ + buf_page_t* dpage) /* in/out: destination control block */ +{ + buf_page_t* b; + ulint fold; + + ut_ad(buf_pool_mutex_own()); + ut_ad(mutex_own(buf_page_get_mutex(bpage))); + ut_a(buf_page_get_io_fix(bpage) == BUF_IO_NONE); + ut_a(bpage->buf_fix_count == 0); + ut_ad(bpage->in_LRU_list); + ut_ad(!bpage->in_zip_hash); + ut_ad(bpage->in_page_hash); + ut_ad(bpage == buf_page_hash_get(bpage->space, bpage->offset)); +#ifdef UNIV_DEBUG + switch (buf_page_get_state(bpage)) { + case BUF_BLOCK_ZIP_FREE: + case BUF_BLOCK_NOT_USED: + case BUF_BLOCK_READY_FOR_USE: + case BUF_BLOCK_FILE_PAGE: + case BUF_BLOCK_MEMORY: + case BUF_BLOCK_REMOVE_HASH: + ut_error; + case BUF_BLOCK_ZIP_DIRTY: + case BUF_BLOCK_ZIP_PAGE: + break; + } +#endif /* UNIV_DEBUG */ + + memcpy(dpage, bpage, sizeof *dpage); + + bpage->in_LRU_list = FALSE; + ut_d(bpage->in_page_hash = FALSE); + + /* relocate buf_pool->LRU */ + b = UT_LIST_GET_PREV(LRU, bpage); + UT_LIST_REMOVE(LRU, buf_pool->LRU, bpage); + + if (b) { + UT_LIST_INSERT_AFTER(LRU, buf_pool->LRU, b, dpage); + } else { + UT_LIST_ADD_FIRST(LRU, buf_pool->LRU, dpage); + } + + if (UNIV_UNLIKELY(buf_pool->LRU_old == bpage)) { + buf_pool->LRU_old = dpage; +#ifdef UNIV_LRU_DEBUG + /* buf_pool->LRU_old must be the first item in the LRU list + whose "old" flag is set. */ + ut_a(!UT_LIST_GET_PREV(LRU, buf_pool->LRU_old) + || !UT_LIST_GET_PREV(LRU, buf_pool->LRU_old)->old); + ut_a(!UT_LIST_GET_NEXT(LRU, buf_pool->LRU_old) + || UT_LIST_GET_NEXT(LRU, buf_pool->LRU_old)->old); +#endif /* UNIV_LRU_DEBUG */ + } + + ut_d(UT_LIST_VALIDATE(LRU, buf_page_t, buf_pool->LRU)); + + /* relocate buf_pool->page_hash */ + fold = buf_page_address_fold(bpage->space, bpage->offset); + + HASH_DELETE(buf_page_t, hash, buf_pool->page_hash, fold, bpage); + HASH_INSERT(buf_page_t, hash, buf_pool->page_hash, fold, dpage); + + UNIV_MEM_INVALID(bpage, sizeof *bpage); +} + +/************************************************************************ +Shrinks the buffer pool. */ +static +void +buf_pool_shrink( +/*============*/ + /* out: TRUE if shrunk */ + ulint chunk_size) /* in: number of pages to remove */ +{ + buf_chunk_t* chunks; + buf_chunk_t* chunk; + ulint max_size; + ulint max_free_size; + buf_chunk_t* max_chunk; + buf_chunk_t* max_free_chunk; + + ut_ad(!buf_pool_mutex_own()); + +try_again: + btr_search_disable(); /* Empty the adaptive hash index again */ + buf_pool_mutex_enter(); + +shrink_again: + if (buf_pool->n_chunks <= 1) { + + /* Cannot shrink if there is only one chunk */ + goto func_done; + } + + /* Search for the largest free chunk + not larger than the size difference */ + chunks = buf_pool->chunks; + chunk = chunks + buf_pool->n_chunks; + max_size = max_free_size = 0; + max_chunk = max_free_chunk = NULL; + + while (--chunk >= chunks) { + if (chunk->size <= chunk_size + && chunk->size > max_free_size) { + if (chunk->size > max_size) { + max_size = chunk->size; + max_chunk = chunk; + } + + if (buf_chunk_all_free(chunk)) { + max_free_size = chunk->size; + max_free_chunk = chunk; + } + } + } + + if (!max_free_size) { + + ulint dirty = 0; + ulint nonfree = 0; + buf_block_t* block; + buf_block_t* bend; + + /* Cannot shrink: try again later + (do not assign srv_buf_pool_old_size) */ + if (!max_chunk) { + + goto func_exit; + } + + block = max_chunk->blocks; + bend = block + max_chunk->size; + + /* Move the blocks of chunk to the end of the + LRU list and try to flush them. */ + for (; block < bend; block++) { + switch (buf_block_get_state(block)) { + case BUF_BLOCK_NOT_USED: + continue; + case BUF_BLOCK_FILE_PAGE: + break; + default: + nonfree++; + continue; + } + + mutex_enter(&block->mutex); + /* The following calls will temporarily + release block->mutex and buf_pool_mutex. + Therefore, we have to always retry, + even if !dirty && !nonfree. */ + + if (!buf_flush_ready_for_replace(&block->page)) { + + buf_LRU_make_block_old(&block->page); + dirty++; + } else if (buf_LRU_free_block(&block->page, TRUE, NULL) + != BUF_LRU_FREED) { + nonfree++; + } + + mutex_exit(&block->mutex); + } + + buf_pool_mutex_exit(); + + /* Request for a flush of the chunk if it helps. + Do not flush if there are non-free blocks, since + flushing will not make the chunk freeable. */ + if (nonfree) { + /* Avoid busy-waiting. */ + os_thread_sleep(100000); + } else if (dirty + && buf_flush_batch(BUF_FLUSH_LRU, dirty, 0) + == ULINT_UNDEFINED) { + + buf_flush_wait_batch_end(BUF_FLUSH_LRU); + } + + goto try_again; + } + + max_size = max_free_size; + max_chunk = max_free_chunk; + + srv_buf_pool_old_size = srv_buf_pool_size; + + /* Rewrite buf_pool->chunks. Copy everything but max_chunk. */ + chunks = mem_alloc((buf_pool->n_chunks - 1) * sizeof *chunks); + memcpy(chunks, buf_pool->chunks, + (max_chunk - buf_pool->chunks) * sizeof *chunks); + memcpy(chunks + (max_chunk - buf_pool->chunks), + max_chunk + 1, + buf_pool->chunks + buf_pool->n_chunks + - (max_chunk + 1)); + ut_a(buf_pool->curr_size > max_chunk->size); + buf_pool->curr_size -= max_chunk->size; + srv_buf_pool_curr_size = buf_pool->curr_size * UNIV_PAGE_SIZE; + chunk_size -= max_chunk->size; + buf_chunk_free(max_chunk); + mem_free(buf_pool->chunks); + buf_pool->chunks = chunks; + buf_pool->n_chunks--; + + /* Allow a slack of one megabyte. */ + if (chunk_size > 1048576 / UNIV_PAGE_SIZE) { + + goto shrink_again; + } + +func_done: + srv_buf_pool_old_size = srv_buf_pool_size; +func_exit: + buf_pool_mutex_exit(); + btr_search_enable(); +} + +/************************************************************************ +Rebuild buf_pool->page_hash. */ +static +void +buf_pool_page_hash_rebuild(void) +/*============================*/ +{ + ulint i; + ulint n_chunks; + buf_chunk_t* chunk; + hash_table_t* page_hash; + hash_table_t* zip_hash; + buf_page_t* b; + + buf_pool_mutex_enter(); + + /* Free, create, and populate the hash table. */ + hash_table_free(buf_pool->page_hash); + buf_pool->page_hash = page_hash = hash_create(2 * buf_pool->curr_size); + zip_hash = hash_create(2 * buf_pool->curr_size); + + HASH_MIGRATE(buf_pool->zip_hash, zip_hash, buf_page_t, hash, + BUF_POOL_ZIP_FOLD_BPAGE); + + hash_table_free(buf_pool->zip_hash); + buf_pool->zip_hash = zip_hash; + + /* Insert the uncompressed file pages to buf_pool->page_hash. */ + + chunk = buf_pool->chunks; + n_chunks = buf_pool->n_chunks; + + for (i = 0; i < n_chunks; i++, chunk++) { + ulint j; + buf_block_t* block = chunk->blocks; + + for (j = 0; j < chunk->size; j++, block++) { + if (buf_block_get_state(block) + == BUF_BLOCK_FILE_PAGE) { + ut_ad(!block->page.in_zip_hash); + ut_ad(block->page.in_page_hash); + + HASH_INSERT(buf_page_t, hash, page_hash, + buf_page_address_fold( + block->page.space, + block->page.offset), + &block->page); + } + } + } + + /* Insert the compressed-only pages to buf_pool->page_hash. + All such blocks are either in buf_pool->zip_clean or + in buf_pool->flush_list. */ + + for (b = UT_LIST_GET_FIRST(buf_pool->zip_clean); b; + b = UT_LIST_GET_NEXT(list, b)) { + ut_a(buf_page_get_state(b) == BUF_BLOCK_ZIP_PAGE); + ut_ad(!b->in_flush_list); + ut_ad(b->in_LRU_list); + ut_ad(b->in_page_hash); + ut_ad(!b->in_zip_hash); + + HASH_INSERT(buf_page_t, hash, page_hash, + buf_page_address_fold(b->space, b->offset), b); + } + + for (b = UT_LIST_GET_FIRST(buf_pool->flush_list); b; + b = UT_LIST_GET_NEXT(list, b)) { + ut_ad(b->in_flush_list); + ut_ad(b->in_LRU_list); + ut_ad(b->in_page_hash); + ut_ad(!b->in_zip_hash); + + switch (buf_page_get_state(b)) { + case BUF_BLOCK_ZIP_DIRTY: + HASH_INSERT(buf_page_t, hash, page_hash, + buf_page_address_fold(b->space, + b->offset), b); + break; + case BUF_BLOCK_FILE_PAGE: + /* uncompressed page */ + break; + case BUF_BLOCK_ZIP_FREE: + case BUF_BLOCK_ZIP_PAGE: + case BUF_BLOCK_NOT_USED: + case BUF_BLOCK_READY_FOR_USE: + case BUF_BLOCK_MEMORY: + case BUF_BLOCK_REMOVE_HASH: + ut_error; + break; + } + } + + buf_pool_mutex_exit(); +} + +/************************************************************************ +Resizes the buffer pool. */ +UNIV_INTERN +void +buf_pool_resize(void) +/*=================*/ +{ + buf_pool_mutex_enter(); + + if (srv_buf_pool_old_size == srv_buf_pool_size) { + + buf_pool_mutex_exit(); + return; + } + + if (srv_buf_pool_curr_size + 1048576 > srv_buf_pool_size) { + + buf_pool_mutex_exit(); + + /* Disable adaptive hash indexes and empty the index + in order to free up memory in the buffer pool chunks. */ + buf_pool_shrink((srv_buf_pool_curr_size - srv_buf_pool_size) + / UNIV_PAGE_SIZE); + } else if (srv_buf_pool_curr_size + 1048576 < srv_buf_pool_size) { + + /* Enlarge the buffer pool by at least one megabyte */ + + ulint mem_size + = srv_buf_pool_size - srv_buf_pool_curr_size; + buf_chunk_t* chunks; + buf_chunk_t* chunk; + + chunks = mem_alloc((buf_pool->n_chunks + 1) * sizeof *chunks); + + memcpy(chunks, buf_pool->chunks, buf_pool->n_chunks + * sizeof *chunks); + + chunk = &chunks[buf_pool->n_chunks]; + + if (!buf_chunk_init(chunk, mem_size)) { + mem_free(chunks); + } else { + buf_pool->curr_size += chunk->size; + srv_buf_pool_curr_size = buf_pool->curr_size + * UNIV_PAGE_SIZE; + mem_free(buf_pool->chunks); + buf_pool->chunks = chunks; + buf_pool->n_chunks++; + } + + srv_buf_pool_old_size = srv_buf_pool_size; + buf_pool_mutex_exit(); + } + + buf_pool_page_hash_rebuild(); +} + +/************************************************************************ +Moves to the block to the start of the LRU list if there is a danger +that the block would drift out of the buffer pool. */ +UNIV_INLINE +void +buf_block_make_young( +/*=================*/ + buf_page_t* bpage) /* in: block to make younger */ +{ + ut_ad(!buf_pool_mutex_own()); + + /* Note that we read freed_page_clock's without holding any mutex: + this is allowed since the result is used only in heuristics */ + + if (buf_page_peek_if_too_old(bpage)) { + + buf_pool_mutex_enter(); + /* There has been freeing activity in the LRU list: + best to move to the head of the LRU list */ + + buf_LRU_make_block_young(bpage); + buf_pool_mutex_exit(); + } +} + +/************************************************************************ +Moves a page to the start of the buffer pool LRU list. This high-level +function can be used to prevent an important page from from slipping out of +the buffer pool. */ +UNIV_INTERN +void +buf_page_make_young( +/*================*/ + buf_page_t* bpage) /* in: buffer block of a file page */ +{ + buf_pool_mutex_enter(); + + ut_a(buf_page_in_file(bpage)); + + buf_LRU_make_block_young(bpage); + + buf_pool_mutex_exit(); +} + +/************************************************************************ +Resets the check_index_page_at_flush field of a page if found in the buffer +pool. */ +UNIV_INTERN +void +buf_reset_check_index_page_at_flush( +/*================================*/ + ulint space, /* in: space id */ + ulint offset) /* in: page number */ +{ + buf_block_t* block; + + buf_pool_mutex_enter(); + + block = (buf_block_t*) buf_page_hash_get(space, offset); + + if (block && buf_block_get_state(block) == BUF_BLOCK_FILE_PAGE) { + block->check_index_page_at_flush = FALSE; + } + + buf_pool_mutex_exit(); +} + +/************************************************************************ +Returns the current state of is_hashed of a page. FALSE if the page is +not in the pool. NOTE that this operation does not fix the page in the +pool if it is found there. */ +UNIV_INTERN +ibool +buf_page_peek_if_search_hashed( +/*===========================*/ + /* out: TRUE if page hash index is built in search + system */ + ulint space, /* in: space id */ + ulint offset) /* in: page number */ +{ + buf_block_t* block; + ibool is_hashed; + + buf_pool_mutex_enter(); + + block = (buf_block_t*) buf_page_hash_get(space, offset); + + if (!block || buf_block_get_state(block) != BUF_BLOCK_FILE_PAGE) { + is_hashed = FALSE; + } else { + is_hashed = block->is_hashed; + } + + buf_pool_mutex_exit(); + + return(is_hashed); +} + +#ifdef UNIV_DEBUG_FILE_ACCESSES +/************************************************************************ +Sets file_page_was_freed TRUE if the page is found in the buffer pool. +This function should be called when we free a file page and want the +debug version to check that it is not accessed any more unless +reallocated. */ +UNIV_INTERN +buf_page_t* +buf_page_set_file_page_was_freed( +/*=============================*/ + /* out: control block if found in page hash table, + otherwise NULL */ + ulint space, /* in: space id */ + ulint offset) /* in: page number */ +{ + buf_page_t* bpage; + + buf_pool_mutex_enter(); + + bpage = buf_page_hash_get(space, offset); + + if (bpage) { + bpage->file_page_was_freed = TRUE; + } + + buf_pool_mutex_exit(); + + return(bpage); +} + +/************************************************************************ +Sets file_page_was_freed FALSE if the page is found in the buffer pool. +This function should be called when we free a file page and want the +debug version to check that it is not accessed any more unless +reallocated. */ +UNIV_INTERN +buf_page_t* +buf_page_reset_file_page_was_freed( +/*===============================*/ + /* out: control block if found in page hash table, + otherwise NULL */ + ulint space, /* in: space id */ + ulint offset) /* in: page number */ +{ + buf_page_t* bpage; + + buf_pool_mutex_enter(); + + bpage = buf_page_hash_get(space, offset); + + if (bpage) { + bpage->file_page_was_freed = FALSE; + } + + buf_pool_mutex_exit(); + + return(bpage); +} +#endif /* UNIV_DEBUG_FILE_ACCESSES */ + +/************************************************************************ +Get read access to a compressed page (usually of type +FIL_PAGE_TYPE_ZBLOB or FIL_PAGE_TYPE_ZBLOB2). +The page must be released with buf_page_release_zip(). +NOTE: the page is not protected by any latch. Mutual exclusion has to +be implemented at a higher level. In other words, all possible +accesses to a given page through this function must be protected by +the same set of mutexes or latches. */ +UNIV_INTERN +buf_page_t* +buf_page_get_zip( +/*=============*/ + /* out: pointer to the block */ + ulint space, /* in: space id */ + ulint zip_size,/* in: compressed page size */ + ulint offset) /* in: page number */ +{ + buf_page_t* bpage; + mutex_t* block_mutex; + ibool must_read; + +#ifndef UNIV_LOG_DEBUG + ut_ad(!ibuf_inside()); +#endif + buf_pool->n_page_gets++; + + for (;;) { + buf_pool_mutex_enter(); +lookup: + bpage = buf_page_hash_get(space, offset); + if (bpage) { + break; + } + + /* Page not in buf_pool: needs to be read from file */ + + buf_pool_mutex_exit(); + + buf_read_page(space, zip_size, offset); + +#if defined UNIV_DEBUG || defined UNIV_BUF_DEBUG + ut_a(++buf_dbg_counter % 37 || buf_validate()); +#endif /* UNIV_DEBUG || UNIV_BUF_DEBUG */ + } + + if (UNIV_UNLIKELY(!bpage->zip.data)) { + /* There is no compressed page. */ + buf_pool_mutex_exit(); + return(NULL); + } + + block_mutex = buf_page_get_mutex(bpage); + mutex_enter(block_mutex); + + switch (buf_page_get_state(bpage)) { + case BUF_BLOCK_NOT_USED: + case BUF_BLOCK_READY_FOR_USE: + case BUF_BLOCK_MEMORY: + case BUF_BLOCK_REMOVE_HASH: + case BUF_BLOCK_ZIP_FREE: + ut_error; + break; + case BUF_BLOCK_ZIP_PAGE: + case BUF_BLOCK_ZIP_DIRTY: + bpage->buf_fix_count++; + break; + case BUF_BLOCK_FILE_PAGE: + /* Discard the uncompressed page frame if possible. */ + if (buf_LRU_free_block(bpage, FALSE, NULL) + == BUF_LRU_FREED) { + + mutex_exit(block_mutex); + goto lookup; + } + + buf_block_buf_fix_inc((buf_block_t*) bpage, + __FILE__, __LINE__); + break; + } + + must_read = buf_page_get_io_fix(bpage) == BUF_IO_READ; + + buf_pool_mutex_exit(); + + buf_page_set_accessed(bpage, TRUE); + + mutex_exit(block_mutex); + + buf_block_make_young(bpage); + +#ifdef UNIV_DEBUG_FILE_ACCESSES + ut_a(!bpage->file_page_was_freed); +#endif + +#if defined UNIV_DEBUG || defined UNIV_BUF_DEBUG + ut_a(++buf_dbg_counter % 5771 || buf_validate()); + ut_a(bpage->buf_fix_count > 0); + ut_a(buf_page_in_file(bpage)); +#endif /* UNIV_DEBUG || UNIV_BUF_DEBUG */ + + if (must_read) { + /* Let us wait until the read operation + completes */ + + for (;;) { + enum buf_io_fix io_fix; + + mutex_enter(block_mutex); + io_fix = buf_page_get_io_fix(bpage); + mutex_exit(block_mutex); + + if (io_fix == BUF_IO_READ) { + + os_thread_sleep(WAIT_FOR_READ); + } else { + break; + } + } + } + +#ifdef UNIV_IBUF_COUNT_DEBUG + ut_a(ibuf_count_get(buf_page_get_space(bpage), + buf_page_get_page_no(bpage)) == 0); +#endif + return(bpage); +} + +/************************************************************************ +Initialize some fields of a control block. */ +UNIV_INLINE +void +buf_block_init_low( +/*===============*/ + buf_block_t* block) /* in: block to init */ +{ + block->check_index_page_at_flush = FALSE; + block->index = NULL; + + block->n_hash_helps = 0; + block->is_hashed = FALSE; + block->n_fields = 1; + block->n_bytes = 0; + block->left_side = TRUE; +} + +/************************************************************************ +Decompress a block. */ +static +ibool +buf_zip_decompress( +/*===============*/ + /* out: TRUE if successful */ + buf_block_t* block, /* in/out: block */ + ibool check) /* in: TRUE=verify the page checksum */ +{ + const byte* frame = block->page.zip.data; + + ut_ad(buf_block_get_zip_size(block)); + ut_a(buf_block_get_space(block) != 0); + + if (UNIV_LIKELY(check)) { + ulint stamp_checksum = mach_read_from_4( + frame + FIL_PAGE_SPACE_OR_CHKSUM); + ulint calc_checksum = page_zip_calc_checksum( + frame, page_zip_get_size(&block->page.zip)); + + if (UNIV_UNLIKELY(stamp_checksum != calc_checksum)) { + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: compressed page checksum mismatch" + " (space %u page %u): %lu != %lu\n", + block->page.space, block->page.offset, + stamp_checksum, calc_checksum); + return(FALSE); + } + } + + switch (fil_page_get_type(frame)) { + case FIL_PAGE_INDEX: + if (page_zip_decompress(&block->page.zip, + block->frame)) { + return(TRUE); + } + + fprintf(stderr, + "InnoDB: unable to decompress space %lu page %lu\n", + (ulong) block->page.space, + (ulong) block->page.offset); + return(FALSE); + + case FIL_PAGE_TYPE_ALLOCATED: + case FIL_PAGE_INODE: + case FIL_PAGE_IBUF_BITMAP: + case FIL_PAGE_TYPE_FSP_HDR: + case FIL_PAGE_TYPE_XDES: + case FIL_PAGE_TYPE_ZBLOB: + case FIL_PAGE_TYPE_ZBLOB2: + /* Copy to uncompressed storage. */ + memcpy(block->frame, frame, + buf_block_get_zip_size(block)); + return(TRUE); + } + + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: unknown compressed page" + " type %lu\n", + fil_page_get_type(frame)); + return(FALSE); +} + +/*********************************************************************** +Gets the block to whose frame the pointer is pointing to. */ +UNIV_INTERN +buf_block_t* +buf_block_align( +/*============*/ + /* out: pointer to block, never NULL */ + const byte* ptr) /* in: pointer to a frame */ +{ + buf_chunk_t* chunk; + ulint i; + + /* TODO: protect buf_pool->chunks with a mutex (it will + currently remain constant after buf_pool_init()) */ + for (chunk = buf_pool->chunks, i = buf_pool->n_chunks; i--; chunk++) { + lint offs = ptr - chunk->blocks->frame; + + if (UNIV_UNLIKELY(offs < 0)) { + + continue; + } + + offs >>= UNIV_PAGE_SIZE_SHIFT; + + if (UNIV_LIKELY((ulint) offs < chunk->size)) { + buf_block_t* block = &chunk->blocks[offs]; + + /* The function buf_chunk_init() invokes + buf_block_init() so that block[n].frame == + block->frame + n * UNIV_PAGE_SIZE. Check it. */ + ut_ad(block->frame == page_align(ptr)); +#ifdef UNIV_DEBUG + /* A thread that updates these fields must + hold buf_pool_mutex and block->mutex. Acquire + only the latter. */ + mutex_enter(&block->mutex); + + switch (buf_block_get_state(block)) { + case BUF_BLOCK_ZIP_FREE: + case BUF_BLOCK_ZIP_PAGE: + case BUF_BLOCK_ZIP_DIRTY: + /* These types should only be used in + the compressed buffer pool, whose + memory is allocated from + buf_pool->chunks, in UNIV_PAGE_SIZE + blocks flagged as BUF_BLOCK_MEMORY. */ + ut_error; + break; + case BUF_BLOCK_NOT_USED: + case BUF_BLOCK_READY_FOR_USE: + case BUF_BLOCK_MEMORY: + /* Some data structures contain + "guess" pointers to file pages. The + file pages may have been freed and + reused. Do not complain. */ + break; + case BUF_BLOCK_REMOVE_HASH: + /* buf_LRU_block_remove_hashed_page() + will overwrite the FIL_PAGE_OFFSET and + FIL_PAGE_ARCH_LOG_NO_OR_SPACE_ID with + 0xff and set the state to + BUF_BLOCK_REMOVE_HASH. */ + ut_ad(page_get_space_id(page_align(ptr)) + == 0xffffffff); + ut_ad(page_get_page_no(page_align(ptr)) + == 0xffffffff); + break; + case BUF_BLOCK_FILE_PAGE: + ut_ad(block->page.space + == page_get_space_id(page_align(ptr))); + ut_ad(block->page.offset + == page_get_page_no(page_align(ptr))); + break; + } + + mutex_exit(&block->mutex); +#endif /* UNIV_DEBUG */ + + return(block); + } + } + + /* The block should always be found. */ + ut_error; + return(NULL); +} + +/************************************************************************ +Find out if a buffer block was created by buf_chunk_init(). */ +static +ibool +buf_block_is_uncompressed( +/*======================*/ + /* out: TRUE if "block" has + been added to buf_pool->free + by buf_chunk_init() */ + const buf_block_t* block) /* in: pointer to block, + not dereferenced */ +{ + const buf_chunk_t* chunk = buf_pool->chunks; + const buf_chunk_t* const echunk = chunk + buf_pool->n_chunks; + + ut_ad(buf_pool_mutex_own()); + + if (UNIV_UNLIKELY((((ulint) block) % sizeof *block) != 0)) { + /* The pointer should be aligned. */ + return(FALSE); + } + + while (chunk < echunk) { + if (block >= chunk->blocks + && block < chunk->blocks + chunk->size) { + + return(TRUE); + } + + chunk++; + } + + return(FALSE); +} + +/************************************************************************ +This is the general function used to get access to a database page. */ +UNIV_INTERN +buf_block_t* +buf_page_get_gen( +/*=============*/ + /* out: pointer to the block or NULL */ + ulint space, /* in: space id */ + ulint zip_size,/* in: compressed page size in bytes + or 0 for uncompressed pages */ + ulint offset, /* in: page number */ + ulint rw_latch,/* in: RW_S_LATCH, RW_X_LATCH, RW_NO_LATCH */ + buf_block_t* guess, /* in: guessed block or NULL */ + ulint mode, /* in: BUF_GET, BUF_GET_IF_IN_POOL, + BUF_GET_NO_LATCH */ + const char* file, /* in: file name */ + ulint line, /* in: line where called */ + mtr_t* mtr) /* in: mini-transaction */ +{ + buf_block_t* block; + ibool accessed; + ulint fix_type; + ibool must_read; + + ut_ad(mtr); + ut_ad((rw_latch == RW_S_LATCH) + || (rw_latch == RW_X_LATCH) + || (rw_latch == RW_NO_LATCH)); + ut_ad((mode != BUF_GET_NO_LATCH) || (rw_latch == RW_NO_LATCH)); + ut_ad((mode == BUF_GET) || (mode == BUF_GET_IF_IN_POOL) + || (mode == BUF_GET_NO_LATCH)); + ut_ad(zip_size == fil_space_get_zip_size(space)); +#ifndef UNIV_LOG_DEBUG + ut_ad(!ibuf_inside() || ibuf_page(space, zip_size, offset, NULL)); +#endif + buf_pool->n_page_gets++; +loop: + block = guess; + buf_pool_mutex_enter(); + + if (block) { + /* If the guess is a compressed page descriptor that + has been allocated by buf_buddy_alloc(), it may have + been invalidated by buf_buddy_relocate(). In that + case, block could point to something that happens to + contain the expected bits in block->page. Similarly, + the guess may be pointing to a buffer pool chunk that + has been released when resizing the buffer pool. */ + + if (!buf_block_is_uncompressed(block) + || offset != block->page.offset + || space != block->page.space + || buf_block_get_state(block) != BUF_BLOCK_FILE_PAGE) { + + block = guess = NULL; + } else { + ut_ad(!block->page.in_zip_hash); + ut_ad(block->page.in_page_hash); + } + } + + if (block == NULL) { + block = (buf_block_t*) buf_page_hash_get(space, offset); + } + +loop2: + if (block == NULL) { + /* Page not in buf_pool: needs to be read from file */ + + buf_pool_mutex_exit(); + + if (mode == BUF_GET_IF_IN_POOL) { + + return(NULL); + } + + buf_read_page(space, zip_size, offset); + +#if defined UNIV_DEBUG || defined UNIV_BUF_DEBUG + ut_a(++buf_dbg_counter % 37 || buf_validate()); +#endif /* UNIV_DEBUG || UNIV_BUF_DEBUG */ + goto loop; + } + + ut_ad(page_zip_get_size(&block->page.zip) == zip_size); + + must_read = buf_block_get_io_fix(block) == BUF_IO_READ; + + if (must_read && mode == BUF_GET_IF_IN_POOL) { + /* The page is only being read to buffer */ + buf_pool_mutex_exit(); + + return(NULL); + } + + switch (buf_block_get_state(block)) { + buf_page_t* bpage; + ibool success; + + case BUF_BLOCK_FILE_PAGE: + break; + + case BUF_BLOCK_ZIP_PAGE: + case BUF_BLOCK_ZIP_DIRTY: + bpage = &block->page; + + if (bpage->buf_fix_count + || buf_page_get_io_fix(bpage) != BUF_IO_NONE) { + /* This condition often occurs when the buffer + is not buffer-fixed, but I/O-fixed by + buf_page_init_for_read(). */ +wait_until_unfixed: + /* The block is buffer-fixed or I/O-fixed. + Try again later. */ + buf_pool_mutex_exit(); + os_thread_sleep(WAIT_FOR_READ); + + goto loop; + } + + /* Allocate an uncompressed page. */ + buf_pool_mutex_exit(); + + block = buf_LRU_get_free_block(0); + ut_a(block); + + buf_pool_mutex_enter(); + mutex_enter(&block->mutex); + + { + buf_page_t* hash_bpage + = buf_page_hash_get(space, offset); + + if (UNIV_UNLIKELY(bpage != hash_bpage)) { + /* The buf_pool->page_hash was modified + while buf_pool_mutex was released. + Free the block that was allocated. */ + + buf_LRU_block_free_non_file_page(block); + mutex_exit(&block->mutex); + + block = (buf_block_t*) hash_bpage; + goto loop2; + } + } + + if (UNIV_UNLIKELY + (bpage->buf_fix_count + || buf_page_get_io_fix(bpage) != BUF_IO_NONE)) { + + /* The block was buffer-fixed or I/O-fixed + while buf_pool_mutex was not held by this thread. + Free the block that was allocated and try again. + This should be extremely unlikely. */ + + buf_LRU_block_free_non_file_page(block); + mutex_exit(&block->mutex); + + goto wait_until_unfixed; + } + + /* Move the compressed page from bpage to block, + and uncompress it. */ + + mutex_enter(&buf_pool_zip_mutex); + + buf_relocate(bpage, &block->page); + buf_block_init_low(block); + block->lock_hash_val = lock_rec_hash(space, offset); + + UNIV_MEM_DESC(&block->page.zip.data, + page_zip_get_size(&block->page.zip), block); + + if (buf_page_get_state(&block->page) + == BUF_BLOCK_ZIP_PAGE) { + UT_LIST_REMOVE(list, buf_pool->zip_clean, + &block->page); + ut_ad(!block->page.in_flush_list); + } else { + /* Relocate buf_pool->flush_list. */ + buf_page_t* b; + + b = UT_LIST_GET_PREV(list, &block->page); + ut_ad(block->page.in_flush_list); + UT_LIST_REMOVE(list, buf_pool->flush_list, + &block->page); + + if (b) { + UT_LIST_INSERT_AFTER( + list, buf_pool->flush_list, b, + &block->page); + } else { + UT_LIST_ADD_FIRST( + list, buf_pool->flush_list, + &block->page); + } + } + + /* Buffer-fix, I/O-fix, and X-latch the block + for the duration of the decompression. + Also add the block to the unzip_LRU list. */ + block->page.state = BUF_BLOCK_FILE_PAGE; + + /* Insert at the front of unzip_LRU list */ + buf_unzip_LRU_add_block(block, FALSE); + + block->page.buf_fix_count = 1; + buf_block_set_io_fix(block, BUF_IO_READ); + buf_pool->n_pend_unzip++; + rw_lock_x_lock(&block->lock); + mutex_exit(&block->mutex); + mutex_exit(&buf_pool_zip_mutex); + + buf_buddy_free(bpage, sizeof *bpage); + + buf_pool_mutex_exit(); + + /* Decompress the page and apply buffered operations + while not holding buf_pool_mutex or block->mutex. */ + success = buf_zip_decompress(block, srv_use_checksums); + + if (UNIV_LIKELY(success)) { + ibuf_merge_or_delete_for_page(block, space, offset, + zip_size, TRUE); + } + + /* Unfix and unlatch the block. */ + buf_pool_mutex_enter(); + mutex_enter(&block->mutex); + buf_pool->n_pend_unzip--; + block->page.buf_fix_count--; + buf_block_set_io_fix(block, BUF_IO_NONE); + mutex_exit(&block->mutex); + rw_lock_x_unlock(&block->lock); + + if (UNIV_UNLIKELY(!success)) { + + buf_pool_mutex_exit(); + return(NULL); + } + + break; + + case BUF_BLOCK_ZIP_FREE: + case BUF_BLOCK_NOT_USED: + case BUF_BLOCK_READY_FOR_USE: + case BUF_BLOCK_MEMORY: + case BUF_BLOCK_REMOVE_HASH: + ut_error; + break; + } + + ut_ad(buf_block_get_state(block) == BUF_BLOCK_FILE_PAGE); + + mutex_enter(&block->mutex); + UNIV_MEM_ASSERT_RW(&block->page, sizeof block->page); + + buf_block_buf_fix_inc(block, file, line); + buf_pool_mutex_exit(); + + /* Check if this is the first access to the page */ + + accessed = buf_page_is_accessed(&block->page); + + buf_page_set_accessed(&block->page, TRUE); + + mutex_exit(&block->mutex); + + buf_block_make_young(&block->page); + +#ifdef UNIV_DEBUG_FILE_ACCESSES + ut_a(!block->page.file_page_was_freed); +#endif + +#if defined UNIV_DEBUG || defined UNIV_BUF_DEBUG + ut_a(++buf_dbg_counter % 5771 || buf_validate()); + ut_a(block->page.buf_fix_count > 0); + ut_a(buf_block_get_state(block) == BUF_BLOCK_FILE_PAGE); +#endif /* UNIV_DEBUG || UNIV_BUF_DEBUG */ + + switch (rw_latch) { + case RW_NO_LATCH: + if (must_read) { + /* Let us wait until the read operation + completes */ + + for (;;) { + enum buf_io_fix io_fix; + + mutex_enter(&block->mutex); + io_fix = buf_block_get_io_fix(block); + mutex_exit(&block->mutex); + + if (io_fix == BUF_IO_READ) { + + os_thread_sleep(WAIT_FOR_READ); + } else { + break; + } + } + } + + fix_type = MTR_MEMO_BUF_FIX; + break; + + case RW_S_LATCH: + rw_lock_s_lock_func(&(block->lock), 0, file, line); + + fix_type = MTR_MEMO_PAGE_S_FIX; + break; + + default: + ut_ad(rw_latch == RW_X_LATCH); + rw_lock_x_lock_func(&(block->lock), 0, file, line); + + fix_type = MTR_MEMO_PAGE_X_FIX; + break; + } + + mtr_memo_push(mtr, block, fix_type); + + if (!accessed) { + /* In the case of a first access, try to apply linear + read-ahead */ + + buf_read_ahead_linear(space, zip_size, offset); + } + +#ifdef UNIV_IBUF_COUNT_DEBUG + ut_a(ibuf_count_get(buf_block_get_space(block), + buf_block_get_page_no(block)) == 0); +#endif + return(block); +} + +/************************************************************************ +This is the general function used to get optimistic access to a database +page. */ +UNIV_INTERN +ibool +buf_page_optimistic_get_func( +/*=========================*/ + /* out: TRUE if success */ + ulint rw_latch,/* in: RW_S_LATCH, RW_X_LATCH */ + buf_block_t* block, /* in: guessed buffer block */ + ib_uint64_t modify_clock,/* in: modify clock value if mode is + ..._GUESS_ON_CLOCK */ + const char* file, /* in: file name */ + ulint line, /* in: line where called */ + mtr_t* mtr) /* in: mini-transaction */ +{ + ibool accessed; + ibool success; + ulint fix_type; + + ut_ad(mtr && block); + ut_ad((rw_latch == RW_S_LATCH) || (rw_latch == RW_X_LATCH)); + + mutex_enter(&block->mutex); + + if (UNIV_UNLIKELY(buf_block_get_state(block) != BUF_BLOCK_FILE_PAGE)) { + + mutex_exit(&block->mutex); + + return(FALSE); + } + + buf_block_buf_fix_inc(block, file, line); + accessed = buf_page_is_accessed(&block->page); + buf_page_set_accessed(&block->page, TRUE); + + mutex_exit(&block->mutex); + + buf_block_make_young(&block->page); + + /* Check if this is the first access to the page */ + + ut_ad(!ibuf_inside() + || ibuf_page(buf_block_get_space(block), + buf_block_get_zip_size(block), + buf_block_get_page_no(block), NULL)); + + if (rw_latch == RW_S_LATCH) { + success = rw_lock_s_lock_nowait(&(block->lock), + file, line); + fix_type = MTR_MEMO_PAGE_S_FIX; + } else { + success = rw_lock_x_lock_func_nowait(&(block->lock), + file, line); + fix_type = MTR_MEMO_PAGE_X_FIX; + } + + if (UNIV_UNLIKELY(!success)) { + mutex_enter(&block->mutex); + buf_block_buf_fix_dec(block); + mutex_exit(&block->mutex); + + return(FALSE); + } + + if (UNIV_UNLIKELY(modify_clock != block->modify_clock)) { + buf_block_dbg_add_level(block, SYNC_NO_ORDER_CHECK); + + if (rw_latch == RW_S_LATCH) { + rw_lock_s_unlock(&(block->lock)); + } else { + rw_lock_x_unlock(&(block->lock)); + } + + mutex_enter(&block->mutex); + buf_block_buf_fix_dec(block); + mutex_exit(&block->mutex); + + return(FALSE); + } + + mtr_memo_push(mtr, block, fix_type); + +#if defined UNIV_DEBUG || defined UNIV_BUF_DEBUG + ut_a(++buf_dbg_counter % 5771 || buf_validate()); + ut_a(block->page.buf_fix_count > 0); + ut_a(buf_block_get_state(block) == BUF_BLOCK_FILE_PAGE); +#endif /* UNIV_DEBUG || UNIV_BUF_DEBUG */ + +#ifdef UNIV_DEBUG_FILE_ACCESSES + ut_a(block->page.file_page_was_freed == FALSE); +#endif + if (UNIV_UNLIKELY(!accessed)) { + /* In the case of a first access, try to apply linear + read-ahead */ + + buf_read_ahead_linear(buf_block_get_space(block), + buf_block_get_zip_size(block), + buf_block_get_page_no(block)); + } + +#ifdef UNIV_IBUF_COUNT_DEBUG + ut_a(ibuf_count_get(buf_block_get_space(block), + buf_block_get_page_no(block)) == 0); +#endif + buf_pool->n_page_gets++; + + return(TRUE); +} + +/************************************************************************ +This is used to get access to a known database page, when no waiting can be +done. For example, if a search in an adaptive hash index leads us to this +frame. */ +UNIV_INTERN +ibool +buf_page_get_known_nowait( +/*======================*/ + /* out: TRUE if success */ + ulint rw_latch,/* in: RW_S_LATCH, RW_X_LATCH */ + buf_block_t* block, /* in: the known page */ + ulint mode, /* in: BUF_MAKE_YOUNG or BUF_KEEP_OLD */ + const char* file, /* in: file name */ + ulint line, /* in: line where called */ + mtr_t* mtr) /* in: mini-transaction */ +{ + ibool success; + ulint fix_type; + + ut_ad(mtr); + ut_ad((rw_latch == RW_S_LATCH) || (rw_latch == RW_X_LATCH)); + + mutex_enter(&block->mutex); + + if (buf_block_get_state(block) == BUF_BLOCK_REMOVE_HASH) { + /* Another thread is just freeing the block from the LRU list + of the buffer pool: do not try to access this page; this + attempt to access the page can only come through the hash + index because when the buffer block state is ..._REMOVE_HASH, + we have already removed it from the page address hash table + of the buffer pool. */ + + mutex_exit(&block->mutex); + + return(FALSE); + } + + ut_a(buf_block_get_state(block) == BUF_BLOCK_FILE_PAGE); + + buf_block_buf_fix_inc(block, file, line); + + mutex_exit(&block->mutex); + + if (mode == BUF_MAKE_YOUNG) { + buf_block_make_young(&block->page); + } + + ut_ad(!ibuf_inside() || (mode == BUF_KEEP_OLD)); + + if (rw_latch == RW_S_LATCH) { + success = rw_lock_s_lock_nowait(&(block->lock), + file, line); + fix_type = MTR_MEMO_PAGE_S_FIX; + } else { + success = rw_lock_x_lock_func_nowait(&(block->lock), + file, line); + fix_type = MTR_MEMO_PAGE_X_FIX; + } + + if (!success) { + mutex_enter(&block->mutex); + buf_block_buf_fix_dec(block); + mutex_exit(&block->mutex); + + return(FALSE); + } + + mtr_memo_push(mtr, block, fix_type); + +#if defined UNIV_DEBUG || defined UNIV_BUF_DEBUG + ut_a(++buf_dbg_counter % 5771 || buf_validate()); + ut_a(block->page.buf_fix_count > 0); + ut_a(buf_block_get_state(block) == BUF_BLOCK_FILE_PAGE); +#endif /* UNIV_DEBUG || UNIV_BUF_DEBUG */ +#ifdef UNIV_DEBUG_FILE_ACCESSES + ut_a(block->page.file_page_was_freed == FALSE); +#endif + +#ifdef UNIV_IBUF_COUNT_DEBUG + ut_a((mode == BUF_KEEP_OLD) + || (ibuf_count_get(buf_block_get_space(block), + buf_block_get_page_no(block)) == 0)); +#endif + buf_pool->n_page_gets++; + + return(TRUE); +} + +/*********************************************************************** +Given a tablespace id and page number tries to get that page. If the +page is not in the buffer pool it is not loaded and NULL is returned. +Suitable for using when holding the kernel mutex. */ +UNIV_INTERN +const buf_block_t* +buf_page_try_get_func( +/*==================*/ + /* out: pointer to a page or NULL */ + ulint space_id,/* in: tablespace id */ + ulint page_no,/* in: page number */ + const char* file, /* in: file name */ + ulint line, /* in: line where called */ + mtr_t* mtr) /* in: mini-transaction */ +{ + buf_block_t* block; + ibool success; + ulint fix_type; + + buf_pool_mutex_enter(); + block = buf_block_hash_get(space_id, page_no); + + if (!block) { + buf_pool_mutex_exit(); + return(NULL); + } + + mutex_enter(&block->mutex); + buf_pool_mutex_exit(); + +#if defined UNIV_DEBUG || defined UNIV_BUF_DEBUG + ut_a(buf_block_get_state(block) == BUF_BLOCK_FILE_PAGE); + ut_a(buf_block_get_space(block) == space_id); + ut_a(buf_block_get_page_no(block) == page_no); +#endif /* UNIV_DEBUG || UNIV_BUF_DEBUG */ + + buf_block_buf_fix_inc(block, file, line); + mutex_exit(&block->mutex); + + fix_type = MTR_MEMO_PAGE_S_FIX; + success = rw_lock_s_lock_nowait(&block->lock, file, line); + + if (!success) { + /* Let us try to get an X-latch. If the current thread + is holding an X-latch on the page, we cannot get an + S-latch. */ + + fix_type = MTR_MEMO_PAGE_X_FIX; + success = rw_lock_x_lock_func_nowait(&block->lock, + file, line); + } + + if (!success) { + mutex_enter(&block->mutex); + buf_block_buf_fix_dec(block); + mutex_exit(&block->mutex); + + return(NULL); + } + + mtr_memo_push(mtr, block, fix_type); +#if defined UNIV_DEBUG || defined UNIV_BUF_DEBUG + ut_a(++buf_dbg_counter % 5771 || buf_validate()); + ut_a(block->page.buf_fix_count > 0); + ut_a(buf_block_get_state(block) == BUF_BLOCK_FILE_PAGE); +#endif /* UNIV_DEBUG || UNIV_BUF_DEBUG */ +#ifdef UNIV_DEBUG_FILE_ACCESSES + ut_a(block->page.file_page_was_freed == FALSE); +#endif /* UNIV_DEBUG_FILE_ACCESSES */ + buf_block_dbg_add_level(block, SYNC_NO_ORDER_CHECK); + + buf_pool->n_page_gets++; + +#ifdef UNIV_IBUF_COUNT_DEBUG + ut_a(ibuf_count_get(buf_block_get_space(block), + buf_block_get_page_no(block)) == 0); +#endif + + return(block); +} + +/************************************************************************ +Initialize some fields of a control block. */ +UNIV_INLINE +void +buf_page_init_low( +/*==============*/ + buf_page_t* bpage) /* in: block to init */ +{ + bpage->flush_type = BUF_FLUSH_LRU; + bpage->accessed = FALSE; + bpage->io_fix = BUF_IO_NONE; + bpage->buf_fix_count = 0; + bpage->freed_page_clock = 0; + bpage->newest_modification = 0; + bpage->oldest_modification = 0; + HASH_INVALIDATE(bpage, hash); +#ifdef UNIV_DEBUG_FILE_ACCESSES + bpage->file_page_was_freed = FALSE; +#endif /* UNIV_DEBUG_FILE_ACCESSES */ +} + +#ifdef UNIV_HOTBACKUP +/************************************************************************ +Inits a page to the buffer buf_pool, for use in ibbackup --restore. */ +UNIV_INTERN +void +buf_page_init_for_backup_restore( +/*=============================*/ + ulint space, /* in: space id */ + ulint offset, /* in: offset of the page within space + in units of a page */ + ulint zip_size,/* in: compressed page size in bytes + or 0 for uncompressed pages */ + buf_block_t* block) /* in: block to init */ +{ + buf_block_init_low(block); + + block->lock_hash_val = 0; + + buf_page_init_low(&block->page); + block->page.state = BUF_BLOCK_FILE_PAGE; + block->page.space = space; + block->page.offset = offset; + + page_zip_des_init(&block->page.zip); + + /* We assume that block->page.data has been allocated + with zip_size == UNIV_PAGE_SIZE. */ + ut_ad(zip_size <= UNIV_PAGE_SIZE); + ut_ad(ut_is_2pow(zip_size)); + page_zip_set_size(&block->page.zip, zip_size); +} +#endif /* UNIV_HOTBACKUP */ + +/************************************************************************ +Inits a page to the buffer buf_pool. */ +static +void +buf_page_init( +/*==========*/ + ulint space, /* in: space id */ + ulint offset, /* in: offset of the page within space + in units of a page */ + buf_block_t* block) /* in: block to init */ +{ + buf_page_t* hash_page; + + ut_ad(buf_pool_mutex_own()); + ut_ad(mutex_own(&(block->mutex))); + ut_a(buf_block_get_state(block) != BUF_BLOCK_FILE_PAGE); + + /* Set the state of the block */ + buf_block_set_file_page(block, space, offset); + +#ifdef UNIV_DEBUG_VALGRIND + if (!space) { + /* Silence valid Valgrind warnings about uninitialized + data being written to data files. There are some unused + bytes on some pages that InnoDB does not initialize. */ + UNIV_MEM_VALID(block->frame, UNIV_PAGE_SIZE); + } +#endif /* UNIV_DEBUG_VALGRIND */ + + buf_block_init_low(block); + + block->lock_hash_val = lock_rec_hash(space, offset); + + /* Insert into the hash table of file pages */ + + hash_page = buf_page_hash_get(space, offset); + + if (UNIV_LIKELY_NULL(hash_page)) { + fprintf(stderr, + "InnoDB: Error: page %lu %lu already found" + " in the hash table: %p, %p\n", + (ulong) space, + (ulong) offset, + (const void*) hash_page, (const void*) block); +#if defined UNIV_DEBUG || defined UNIV_BUF_DEBUG + mutex_exit(&block->mutex); + buf_pool_mutex_exit(); + buf_print(); + buf_LRU_print(); + buf_validate(); + buf_LRU_validate(); +#endif /* UNIV_DEBUG || UNIV_BUF_DEBUG */ + ut_error; + } + + buf_page_init_low(&block->page); + + ut_ad(!block->page.in_zip_hash); + ut_ad(!block->page.in_page_hash); + ut_d(block->page.in_page_hash = TRUE); + HASH_INSERT(buf_page_t, hash, buf_pool->page_hash, + buf_page_address_fold(space, offset), &block->page); +} + +/************************************************************************ +Function which inits a page for read to the buffer buf_pool. If the page is +(1) already in buf_pool, or +(2) if we specify to read only ibuf pages and the page is not an ibuf page, or +(3) if the space is deleted or being deleted, +then this function does nothing. +Sets the io_fix flag to BUF_IO_READ and sets a non-recursive exclusive lock +on the buffer frame. The io-handler must take care that the flag is cleared +and the lock released later. */ +UNIV_INTERN +buf_page_t* +buf_page_init_for_read( +/*===================*/ + /* out: pointer to the block or NULL */ + ulint* err, /* out: DB_SUCCESS or DB_TABLESPACE_DELETED */ + ulint mode, /* in: BUF_READ_IBUF_PAGES_ONLY, ... */ + ulint space, /* in: space id */ + ulint zip_size,/* in: compressed page size, or 0 */ + ibool unzip, /* in: TRUE=request uncompressed page */ + ib_int64_t tablespace_version,/* in: prevents reading from a wrong + version of the tablespace in case we have done + DISCARD + IMPORT */ + ulint offset) /* in: page number */ +{ + buf_block_t* block; + buf_page_t* bpage; + mtr_t mtr; + ibool lru = FALSE; + void* data; + + ut_ad(buf_pool); + + *err = DB_SUCCESS; + + if (mode == BUF_READ_IBUF_PAGES_ONLY) { + /* It is a read-ahead within an ibuf routine */ + + ut_ad(!ibuf_bitmap_page(zip_size, offset)); + ut_ad(ibuf_inside()); + + mtr_start(&mtr); + + if (!recv_no_ibuf_operations + && !ibuf_page(space, zip_size, offset, &mtr)) { + + mtr_commit(&mtr); + + return(NULL); + } + } else { + ut_ad(mode == BUF_READ_ANY_PAGE); + } + + if (zip_size && UNIV_LIKELY(!unzip) + && UNIV_LIKELY(!recv_recovery_is_on())) { + block = NULL; + } else { + block = buf_LRU_get_free_block(0); + ut_ad(block); + } + + buf_pool_mutex_enter(); + + if (buf_page_hash_get(space, offset)) { + /* The page is already in the buffer pool. */ +err_exit: + if (block) { + mutex_enter(&block->mutex); + buf_LRU_block_free_non_file_page(block); + mutex_exit(&block->mutex); + } + + bpage = NULL; + goto func_exit; + } + + if (fil_tablespace_deleted_or_being_deleted_in_mem( + space, tablespace_version)) { + /* The page belongs to a space which has been + deleted or is being deleted. */ + *err = DB_TABLESPACE_DELETED; + + goto err_exit; + } + + if (block) { + bpage = &block->page; + mutex_enter(&block->mutex); + buf_page_init(space, offset, block); + + /* The block must be put to the LRU list, to the old blocks */ + buf_LRU_add_block(bpage, TRUE/* to old blocks */); + + /* We set a pass-type x-lock on the frame because then + the same thread which called for the read operation + (and is running now at this point of code) can wait + for the read to complete by waiting for the x-lock on + the frame; if the x-lock were recursive, the same + thread would illegally get the x-lock before the page + read is completed. The x-lock is cleared by the + io-handler thread. */ + + rw_lock_x_lock_gen(&block->lock, BUF_IO_READ); + buf_page_set_io_fix(bpage, BUF_IO_READ); + + if (UNIV_UNLIKELY(zip_size)) { + page_zip_set_size(&block->page.zip, zip_size); + + /* buf_pool_mutex may be released and + reacquired by buf_buddy_alloc(). Thus, we + must release block->mutex in order not to + break the latching order in the reacquisition + of buf_pool_mutex. We also must defer this + operation until after the block descriptor has + been added to buf_pool->LRU and + buf_pool->page_hash. */ + mutex_exit(&block->mutex); + data = buf_buddy_alloc(zip_size, &lru); + mutex_enter(&block->mutex); + block->page.zip.data = data; + + /* To maintain the invariant + block->in_unzip_LRU_list + == buf_page_belongs_to_unzip_LRU(&block->page) + we have to add this block to unzip_LRU + after block->page.zip.data is set. */ + ut_ad(buf_page_belongs_to_unzip_LRU(&block->page)); + buf_unzip_LRU_add_block(block, TRUE); + } + + mutex_exit(&block->mutex); + } else { + /* Defer buf_buddy_alloc() until after the block has + been found not to exist. The buf_buddy_alloc() and + buf_buddy_free() calls may be expensive because of + buf_buddy_relocate(). */ + + /* The compressed page must be allocated before the + control block (bpage), in order to avoid the + invocation of buf_buddy_relocate_block() on + uninitialized data. */ + data = buf_buddy_alloc(zip_size, &lru); + bpage = buf_buddy_alloc(sizeof *bpage, &lru); + + /* If buf_buddy_alloc() allocated storage from the LRU list, + it released and reacquired buf_pool_mutex. Thus, we must + check the page_hash again, as it may have been modified. */ + if (UNIV_UNLIKELY(lru) + && UNIV_LIKELY_NULL(buf_page_hash_get(space, offset))) { + + /* The block was added by some other thread. */ + buf_buddy_free(bpage, sizeof *bpage); + buf_buddy_free(data, zip_size); + + bpage = NULL; + goto func_exit; + } + + page_zip_des_init(&bpage->zip); + page_zip_set_size(&bpage->zip, zip_size); + bpage->zip.data = data; + + mutex_enter(&buf_pool_zip_mutex); + UNIV_MEM_DESC(bpage->zip.data, + page_zip_get_size(&bpage->zip), bpage); + buf_page_init_low(bpage); + bpage->state = BUF_BLOCK_ZIP_PAGE; + bpage->space = space; + bpage->offset = offset; + +#ifdef UNIV_DEBUG + bpage->in_page_hash = FALSE; + bpage->in_zip_hash = FALSE; + bpage->in_flush_list = FALSE; + bpage->in_free_list = FALSE; +#endif /* UNIV_DEBUG */ + bpage->in_LRU_list = FALSE; + + ut_d(bpage->in_page_hash = TRUE); + HASH_INSERT(buf_page_t, hash, buf_pool->page_hash, + buf_page_address_fold(space, offset), bpage); + + /* The block must be put to the LRU list, to the old blocks */ + buf_LRU_add_block(bpage, TRUE/* to old blocks */); + buf_LRU_insert_zip_clean(bpage); + + buf_page_set_io_fix(bpage, BUF_IO_READ); + + mutex_exit(&buf_pool_zip_mutex); + } + + buf_pool->n_pend_reads++; +func_exit: + buf_pool_mutex_exit(); + + if (mode == BUF_READ_IBUF_PAGES_ONLY) { + + mtr_commit(&mtr); + } + + ut_ad(!bpage || buf_page_in_file(bpage)); + return(bpage); +} + +/************************************************************************ +Initializes a page to the buffer buf_pool. The page is usually not read +from a file even if it cannot be found in the buffer buf_pool. This is one +of the functions which perform to a block a state transition NOT_USED => +FILE_PAGE (the other is buf_page_get_gen). */ +UNIV_INTERN +buf_block_t* +buf_page_create( +/*============*/ + /* out: pointer to the block, page bufferfixed */ + ulint space, /* in: space id */ + ulint offset, /* in: offset of the page within space in units of + a page */ + ulint zip_size,/* in: compressed page size, or 0 */ + mtr_t* mtr) /* in: mini-transaction handle */ +{ + buf_frame_t* frame; + buf_block_t* block; + buf_block_t* free_block = NULL; + + ut_ad(mtr); + ut_ad(space || !zip_size); + + free_block = buf_LRU_get_free_block(0); + + buf_pool_mutex_enter(); + + block = (buf_block_t*) buf_page_hash_get(space, offset); + + if (block && buf_page_in_file(&block->page)) { +#ifdef UNIV_IBUF_COUNT_DEBUG + ut_a(ibuf_count_get(space, offset) == 0); +#endif +#ifdef UNIV_DEBUG_FILE_ACCESSES + block->page.file_page_was_freed = FALSE; +#endif /* UNIV_DEBUG_FILE_ACCESSES */ + + /* Page can be found in buf_pool */ + buf_pool_mutex_exit(); + + buf_block_free(free_block); + + return(buf_page_get_with_no_latch(space, zip_size, + offset, mtr)); + } + + /* If we get here, the page was not in buf_pool: init it there */ + +#ifdef UNIV_DEBUG + if (buf_debug_prints) { + fprintf(stderr, "Creating space %lu page %lu to buffer\n", + (ulong) space, (ulong) offset); + } +#endif /* UNIV_DEBUG */ + + block = free_block; + + mutex_enter(&block->mutex); + + buf_page_init(space, offset, block); + + /* The block must be put to the LRU list */ + buf_LRU_add_block(&block->page, FALSE); + + buf_block_buf_fix_inc(block, __FILE__, __LINE__); + buf_pool->n_pages_created++; + + if (zip_size) { + void* data; + ibool lru; + + /* Prevent race conditions during buf_buddy_alloc(), + which may release and reacquire buf_pool_mutex, + by IO-fixing and X-latching the block. */ + + buf_page_set_io_fix(&block->page, BUF_IO_READ); + rw_lock_x_lock(&block->lock); + + page_zip_set_size(&block->page.zip, zip_size); + mutex_exit(&block->mutex); + /* buf_pool_mutex may be released and reacquired by + buf_buddy_alloc(). Thus, we must release block->mutex + in order not to break the latching order in + the reacquisition of buf_pool_mutex. We also must + defer this operation until after the block descriptor + has been added to buf_pool->LRU and buf_pool->page_hash. */ + data = buf_buddy_alloc(zip_size, &lru); + mutex_enter(&block->mutex); + block->page.zip.data = data; + + /* To maintain the invariant + block->in_unzip_LRU_list + == buf_page_belongs_to_unzip_LRU(&block->page) + we have to add this block to unzip_LRU after + block->page.zip.data is set. */ + ut_ad(buf_page_belongs_to_unzip_LRU(&block->page)); + buf_unzip_LRU_add_block(block, FALSE); + + buf_page_set_io_fix(&block->page, BUF_IO_NONE); + rw_lock_x_unlock(&block->lock); + } + + buf_pool_mutex_exit(); + + mtr_memo_push(mtr, block, MTR_MEMO_BUF_FIX); + + buf_page_set_accessed(&block->page, TRUE); + + mutex_exit(&block->mutex); + + /* Delete possible entries for the page from the insert buffer: + such can exist if the page belonged to an index which was dropped */ + + ibuf_merge_or_delete_for_page(NULL, space, offset, zip_size, TRUE); + + /* Flush pages from the end of the LRU list if necessary */ + buf_flush_free_margin(FALSE); + + frame = block->frame; + + memset(frame + FIL_PAGE_PREV, 0xff, 4); + memset(frame + FIL_PAGE_NEXT, 0xff, 4); + mach_write_to_2(frame + FIL_PAGE_TYPE, FIL_PAGE_TYPE_ALLOCATED); + + /* Reset to zero the file flush lsn field in the page; if the first + page of an ibdata file is 'created' in this function into the buffer + pool then we lose the original contents of the file flush lsn stamp. + Then InnoDB could in a crash recovery print a big, false, corruption + warning if the stamp contains an lsn bigger than the ib_logfile lsn. */ + + memset(frame + FIL_PAGE_FILE_FLUSH_LSN, 0, 8); + +#if defined UNIV_DEBUG || defined UNIV_BUF_DEBUG + ut_a(++buf_dbg_counter % 357 || buf_validate()); +#endif /* UNIV_DEBUG || UNIV_BUF_DEBUG */ +#ifdef UNIV_IBUF_COUNT_DEBUG + ut_a(ibuf_count_get(buf_block_get_space(block), + buf_block_get_page_no(block)) == 0); +#endif + return(block); +} + +/************************************************************************ +Completes an asynchronous read or write request of a file page to or from +the buffer pool. */ +UNIV_INTERN +void +buf_page_io_complete( +/*=================*/ + buf_page_t* bpage) /* in: pointer to the block in question */ +{ + enum buf_io_fix io_type; + const ibool uncompressed = (buf_page_get_state(bpage) + == BUF_BLOCK_FILE_PAGE); + + ut_a(buf_page_in_file(bpage)); + + /* We do not need protect io_fix here by mutex to read + it because this is the only function where we can change the value + from BUF_IO_READ or BUF_IO_WRITE to some other value, and our code + ensures that this is the only thread that handles the i/o for this + block. */ + + io_type = buf_page_get_io_fix(bpage); + ut_ad(io_type == BUF_IO_READ || io_type == BUF_IO_WRITE); + + if (io_type == BUF_IO_READ) { + ulint read_page_no; + ulint read_space_id; + byte* frame; + + if (buf_page_get_zip_size(bpage)) { + frame = bpage->zip.data; + buf_pool->n_pend_unzip++; + if (uncompressed + && !buf_zip_decompress((buf_block_t*) bpage, + FALSE)) { + + buf_pool->n_pend_unzip--; + goto corrupt; + } + buf_pool->n_pend_unzip--; + } else { + ut_a(uncompressed); + frame = ((buf_block_t*) bpage)->frame; + } + + /* If this page is not uninitialized and not in the + doublewrite buffer, then the page number and space id + should be the same as in block. */ + read_page_no = mach_read_from_4(frame + FIL_PAGE_OFFSET); + read_space_id = mach_read_from_4( + frame + FIL_PAGE_ARCH_LOG_NO_OR_SPACE_ID); + + if (bpage->space == TRX_SYS_SPACE + && trx_doublewrite_page_inside(bpage->offset)) { + + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: Error: reading page %lu\n" + "InnoDB: which is in the" + " doublewrite buffer!\n", + (ulong) bpage->offset); + } else if (!read_space_id && !read_page_no) { + /* This is likely an uninitialized page. */ + } else if ((bpage->space + && bpage->space != read_space_id) + || bpage->offset != read_page_no) { + /* We did not compare space_id to read_space_id + if bpage->space == 0, because the field on the + page may contain garbage in MySQL < 4.1.1, + which only supported bpage->space == 0. */ + + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: Error: space id and page n:o" + " stored in the page\n" + "InnoDB: read in are %lu:%lu," + " should be %lu:%lu!\n", + (ulong) read_space_id, (ulong) read_page_no, + (ulong) bpage->space, + (ulong) bpage->offset); + } + + /* From version 3.23.38 up we store the page checksum + to the 4 first bytes of the page end lsn field */ + + if (buf_page_is_corrupted(frame, + buf_page_get_zip_size(bpage))) { +corrupt: + fprintf(stderr, + "InnoDB: Database page corruption on disk" + " or a failed\n" + "InnoDB: file read of page %lu.\n" + "InnoDB: You may have to recover" + " from a backup.\n", + (ulong) bpage->offset); + buf_page_print(frame, buf_page_get_zip_size(bpage)); + fprintf(stderr, + "InnoDB: Database page corruption on disk" + " or a failed\n" + "InnoDB: file read of page %lu.\n" + "InnoDB: You may have to recover" + " from a backup.\n", + (ulong) bpage->offset); + fputs("InnoDB: It is also possible that" + " your operating\n" + "InnoDB: system has corrupted its" + " own file cache\n" + "InnoDB: and rebooting your computer" + " removes the\n" + "InnoDB: error.\n" + "InnoDB: If the corrupt page is an index page\n" + "InnoDB: you can also try to" + " fix the corruption\n" + "InnoDB: by dumping, dropping," + " and reimporting\n" + "InnoDB: the corrupt table." + " You can use CHECK\n" + "InnoDB: TABLE to scan your" + " table for corruption.\n" + "InnoDB: See also" + " http://dev.mysql.com/doc/refman/5.1/en/" + "forcing-recovery.html\n" + "InnoDB: about forcing recovery.\n", stderr); + + if (srv_force_recovery < SRV_FORCE_IGNORE_CORRUPT) { + fputs("InnoDB: Ending processing because of" + " a corrupt database page.\n", + stderr); + exit(1); + } + } + + if (recv_recovery_is_on()) { + /* Pages must be uncompressed for crash recovery. */ + ut_a(uncompressed); + recv_recover_page(FALSE, TRUE, (buf_block_t*) bpage); + } + + if (uncompressed && !recv_no_ibuf_operations) { + ibuf_merge_or_delete_for_page( + (buf_block_t*) bpage, bpage->space, + bpage->offset, buf_page_get_zip_size(bpage), + TRUE); + } + } + + buf_pool_mutex_enter(); + mutex_enter(buf_page_get_mutex(bpage)); + +#ifdef UNIV_IBUF_COUNT_DEBUG + if (io_type == BUF_IO_WRITE || uncompressed) { + /* For BUF_IO_READ of compressed-only blocks, the + buffered operations will be merged by buf_page_get_gen() + after the block has been uncompressed. */ + ut_a(ibuf_count_get(bpage->space, bpage->offset) == 0); + } +#endif + /* Because this thread which does the unlocking is not the same that + did the locking, we use a pass value != 0 in unlock, which simply + removes the newest lock debug record, without checking the thread + id. */ + + buf_page_set_io_fix(bpage, BUF_IO_NONE); + + switch (io_type) { + case BUF_IO_READ: + /* NOTE that the call to ibuf may have moved the ownership of + the x-latch to this OS thread: do not let this confuse you in + debugging! */ + + ut_ad(buf_pool->n_pend_reads > 0); + buf_pool->n_pend_reads--; + buf_pool->n_pages_read++; + + if (uncompressed) { + rw_lock_x_unlock_gen(&((buf_block_t*) bpage)->lock, + BUF_IO_READ); + } + + break; + + case BUF_IO_WRITE: + /* Write means a flush operation: call the completion + routine in the flush system */ + + buf_flush_write_complete(bpage); + + if (uncompressed) { + rw_lock_s_unlock_gen(&((buf_block_t*) bpage)->lock, + BUF_IO_WRITE); + } + + buf_pool->n_pages_written++; + + break; + + default: + ut_error; + } + +#ifdef UNIV_DEBUG + if (buf_debug_prints) { + fprintf(stderr, "Has %s page space %lu page no %lu\n", + io_type == BUF_IO_READ ? "read" : "written", + (ulong) buf_page_get_space(bpage), + (ulong) buf_page_get_page_no(bpage)); + } +#endif /* UNIV_DEBUG */ + + mutex_exit(buf_page_get_mutex(bpage)); + buf_pool_mutex_exit(); +} + +/************************************************************************* +Invalidates the file pages in the buffer pool when an archive recovery is +completed. All the file pages buffered must be in a replaceable state when +this function is called: not latched and not modified. */ +UNIV_INTERN +void +buf_pool_invalidate(void) +/*=====================*/ +{ + ibool freed; + + ut_ad(buf_all_freed()); + + freed = TRUE; + + while (freed) { + freed = buf_LRU_search_and_free_block(100); + } + + buf_pool_mutex_enter(); + + ut_ad(UT_LIST_GET_LEN(buf_pool->LRU) == 0); + ut_ad(UT_LIST_GET_LEN(buf_pool->unzip_LRU) == 0); + + buf_pool_mutex_exit(); +} + +#if defined UNIV_DEBUG || defined UNIV_BUF_DEBUG +/************************************************************************* +Validates the buffer buf_pool data structure. */ +UNIV_INTERN +ibool +buf_validate(void) +/*==============*/ +{ + buf_page_t* b; + buf_chunk_t* chunk; + ulint i; + ulint n_single_flush = 0; + ulint n_lru_flush = 0; + ulint n_list_flush = 0; + ulint n_lru = 0; + ulint n_flush = 0; + ulint n_free = 0; + ulint n_zip = 0; + + ut_ad(buf_pool); + + buf_pool_mutex_enter(); + + chunk = buf_pool->chunks; + + /* Check the uncompressed blocks. */ + + for (i = buf_pool->n_chunks; i--; chunk++) { + + ulint j; + buf_block_t* block = chunk->blocks; + + for (j = chunk->size; j--; block++) { + + mutex_enter(&block->mutex); + + switch (buf_block_get_state(block)) { + case BUF_BLOCK_ZIP_FREE: + case BUF_BLOCK_ZIP_PAGE: + case BUF_BLOCK_ZIP_DIRTY: + /* These should only occur on + zip_clean, zip_free[], or flush_list. */ + ut_error; + break; + + case BUF_BLOCK_FILE_PAGE: + ut_a(buf_page_hash_get(buf_block_get_space( + block), + buf_block_get_page_no( + block)) + == &block->page); + +#ifdef UNIV_IBUF_COUNT_DEBUG + ut_a(buf_page_get_io_fix(&block->page) + == BUF_IO_READ + || !ibuf_count_get(buf_block_get_space( + block), + buf_block_get_page_no( + block))); +#endif + switch (buf_page_get_io_fix(&block->page)) { + case BUF_IO_NONE: + break; + + case BUF_IO_WRITE: + switch (buf_page_get_flush_type( + &block->page)) { + case BUF_FLUSH_LRU: + n_lru_flush++; + ut_a(rw_lock_is_locked( + &block->lock, + RW_LOCK_SHARED)); + break; + case BUF_FLUSH_LIST: + n_list_flush++; + break; + case BUF_FLUSH_SINGLE_PAGE: + n_single_flush++; + break; + default: + ut_error; + } + + break; + + case BUF_IO_READ: + + ut_a(rw_lock_is_locked(&block->lock, + RW_LOCK_EX)); + break; + } + + n_lru++; + + if (block->page.oldest_modification > 0) { + n_flush++; + } + + break; + + case BUF_BLOCK_NOT_USED: + n_free++; + break; + + case BUF_BLOCK_READY_FOR_USE: + case BUF_BLOCK_MEMORY: + case BUF_BLOCK_REMOVE_HASH: + /* do nothing */ + break; + } + + mutex_exit(&block->mutex); + } + } + + mutex_enter(&buf_pool_zip_mutex); + + /* Check clean compressed-only blocks. */ + + for (b = UT_LIST_GET_FIRST(buf_pool->zip_clean); b; + b = UT_LIST_GET_NEXT(list, b)) { + ut_a(buf_page_get_state(b) == BUF_BLOCK_ZIP_PAGE); + switch (buf_page_get_io_fix(b)) { + case BUF_IO_NONE: + /* All clean blocks should be I/O-unfixed. */ + break; + case BUF_IO_READ: + /* In buf_LRU_free_block(), we temporarily set + b->io_fix = BUF_IO_READ for a newly allocated + control block in order to prevent + buf_page_get_gen() from decompressing the block. */ + break; + default: + ut_error; + break; + } + ut_a(!b->oldest_modification); + ut_a(buf_page_hash_get(b->space, b->offset) == b); + + n_lru++; + n_zip++; + } + + /* Check dirty compressed-only blocks. */ + + for (b = UT_LIST_GET_FIRST(buf_pool->flush_list); b; + b = UT_LIST_GET_NEXT(list, b)) { + ut_ad(b->in_flush_list); + + switch (buf_page_get_state(b)) { + case BUF_BLOCK_ZIP_DIRTY: + ut_a(b->oldest_modification); + n_lru++; + n_flush++; + n_zip++; + switch (buf_page_get_io_fix(b)) { + case BUF_IO_NONE: + case BUF_IO_READ: + break; + + case BUF_IO_WRITE: + switch (buf_page_get_flush_type(b)) { + case BUF_FLUSH_LRU: + n_lru_flush++; + break; + case BUF_FLUSH_LIST: + n_list_flush++; + break; + case BUF_FLUSH_SINGLE_PAGE: + n_single_flush++; + break; + default: + ut_error; + } + break; + } + break; + case BUF_BLOCK_FILE_PAGE: + /* uncompressed page */ + break; + case BUF_BLOCK_ZIP_FREE: + case BUF_BLOCK_ZIP_PAGE: + case BUF_BLOCK_NOT_USED: + case BUF_BLOCK_READY_FOR_USE: + case BUF_BLOCK_MEMORY: + case BUF_BLOCK_REMOVE_HASH: + ut_error; + break; + } + ut_a(buf_page_hash_get(b->space, b->offset) == b); + } + + mutex_exit(&buf_pool_zip_mutex); + + if (n_lru + n_free > buf_pool->curr_size + n_zip) { + fprintf(stderr, "n LRU %lu, n free %lu, pool %lu zip %lu\n", + (ulong) n_lru, (ulong) n_free, + (ulong) buf_pool->curr_size, (ulong) n_zip); + ut_error; + } + + ut_a(UT_LIST_GET_LEN(buf_pool->LRU) == n_lru); + if (UT_LIST_GET_LEN(buf_pool->free) != n_free) { + fprintf(stderr, "Free list len %lu, free blocks %lu\n", + (ulong) UT_LIST_GET_LEN(buf_pool->free), + (ulong) n_free); + ut_error; + } + ut_a(UT_LIST_GET_LEN(buf_pool->flush_list) == n_flush); + + ut_a(buf_pool->n_flush[BUF_FLUSH_SINGLE_PAGE] == n_single_flush); + ut_a(buf_pool->n_flush[BUF_FLUSH_LIST] == n_list_flush); + ut_a(buf_pool->n_flush[BUF_FLUSH_LRU] == n_lru_flush); + + buf_pool_mutex_exit(); + + ut_a(buf_LRU_validate()); + ut_a(buf_flush_validate()); + + return(TRUE); +} +#endif /* UNIV_DEBUG || UNIV_BUF_DEBUG */ + +#if defined UNIV_DEBUG_PRINT || defined UNIV_DEBUG || defined UNIV_BUF_DEBUG +/************************************************************************* +Prints info of the buffer buf_pool data structure. */ +UNIV_INTERN +void +buf_print(void) +/*===========*/ +{ + dulint* index_ids; + ulint* counts; + ulint size; + ulint i; + ulint j; + dulint id; + ulint n_found; + buf_chunk_t* chunk; + dict_index_t* index; + + ut_ad(buf_pool); + + size = buf_pool->curr_size; + + index_ids = mem_alloc(sizeof(dulint) * size); + counts = mem_alloc(sizeof(ulint) * size); + + buf_pool_mutex_enter(); + + fprintf(stderr, + "buf_pool size %lu\n" + "database pages %lu\n" + "free pages %lu\n" + "modified database pages %lu\n" + "n pending decompressions %lu\n" + "n pending reads %lu\n" + "n pending flush LRU %lu list %lu single page %lu\n" + "pages read %lu, created %lu, written %lu\n", + (ulong) size, + (ulong) UT_LIST_GET_LEN(buf_pool->LRU), + (ulong) UT_LIST_GET_LEN(buf_pool->free), + (ulong) UT_LIST_GET_LEN(buf_pool->flush_list), + (ulong) buf_pool->n_pend_unzip, + (ulong) buf_pool->n_pend_reads, + (ulong) buf_pool->n_flush[BUF_FLUSH_LRU], + (ulong) buf_pool->n_flush[BUF_FLUSH_LIST], + (ulong) buf_pool->n_flush[BUF_FLUSH_SINGLE_PAGE], + (ulong) buf_pool->n_pages_read, buf_pool->n_pages_created, + (ulong) buf_pool->n_pages_written); + + /* Count the number of blocks belonging to each index in the buffer */ + + n_found = 0; + + chunk = buf_pool->chunks; + + for (i = buf_pool->n_chunks; i--; chunk++) { + buf_block_t* block = chunk->blocks; + ulint n_blocks = chunk->size; + + for (; n_blocks--; block++) { + const buf_frame_t* frame = block->frame; + + if (fil_page_get_type(frame) == FIL_PAGE_INDEX) { + + id = btr_page_get_index_id(frame); + + /* Look for the id in the index_ids array */ + j = 0; + + while (j < n_found) { + + if (ut_dulint_cmp(index_ids[j], + id) == 0) { + counts[j]++; + + break; + } + j++; + } + + if (j == n_found) { + n_found++; + index_ids[j] = id; + counts[j] = 1; + } + } + } + } + + buf_pool_mutex_exit(); + + for (i = 0; i < n_found; i++) { + index = dict_index_get_if_in_cache(index_ids[i]); + + fprintf(stderr, + "Block count for index %lu in buffer is about %lu", + (ulong) ut_dulint_get_low(index_ids[i]), + (ulong) counts[i]); + + if (index) { + putc(' ', stderr); + dict_index_name_print(stderr, NULL, index); + } + + putc('\n', stderr); + } + + mem_free(index_ids); + mem_free(counts); + + ut_a(buf_validate()); +} +#endif /* UNIV_DEBUG_PRINT || UNIV_DEBUG || UNIV_BUF_DEBUG */ + +#ifdef UNIV_DEBUG +/************************************************************************* +Returns the number of latched pages in the buffer pool. */ +UNIV_INTERN +ulint +buf_get_latched_pages_number(void) +/*==============================*/ +{ + buf_chunk_t* chunk; + buf_page_t* b; + ulint i; + ulint fixed_pages_number = 0; + + buf_pool_mutex_enter(); + + chunk = buf_pool->chunks; + + for (i = buf_pool->n_chunks; i--; chunk++) { + buf_block_t* block; + ulint j; + + block = chunk->blocks; + + for (j = chunk->size; j--; block++) { + if (buf_block_get_state(block) + != BUF_BLOCK_FILE_PAGE) { + + continue; + } + + mutex_enter(&block->mutex); + + if (block->page.buf_fix_count != 0 + || buf_page_get_io_fix(&block->page) + != BUF_IO_NONE) { + fixed_pages_number++; + } + + mutex_exit(&block->mutex); + } + } + + mutex_enter(&buf_pool_zip_mutex); + + /* Traverse the lists of clean and dirty compressed-only blocks. */ + + for (b = UT_LIST_GET_FIRST(buf_pool->zip_clean); b; + b = UT_LIST_GET_NEXT(list, b)) { + ut_a(buf_page_get_state(b) == BUF_BLOCK_ZIP_PAGE); + ut_a(buf_page_get_io_fix(b) != BUF_IO_WRITE); + + if (b->buf_fix_count != 0 + || buf_page_get_io_fix(b) != BUF_IO_NONE) { + fixed_pages_number++; + } + } + + for (b = UT_LIST_GET_FIRST(buf_pool->flush_list); b; + b = UT_LIST_GET_NEXT(list, b)) { + ut_ad(b->in_flush_list); + + switch (buf_page_get_state(b)) { + case BUF_BLOCK_ZIP_DIRTY: + if (b->buf_fix_count != 0 + || buf_page_get_io_fix(b) != BUF_IO_NONE) { + fixed_pages_number++; + } + break; + case BUF_BLOCK_FILE_PAGE: + /* uncompressed page */ + break; + case BUF_BLOCK_ZIP_FREE: + case BUF_BLOCK_ZIP_PAGE: + case BUF_BLOCK_NOT_USED: + case BUF_BLOCK_READY_FOR_USE: + case BUF_BLOCK_MEMORY: + case BUF_BLOCK_REMOVE_HASH: + ut_error; + break; + } + } + + mutex_exit(&buf_pool_zip_mutex); + buf_pool_mutex_exit(); + + return(fixed_pages_number); +} +#endif /* UNIV_DEBUG */ + +/************************************************************************* +Returns the number of pending buf pool ios. */ +UNIV_INTERN +ulint +buf_get_n_pending_ios(void) +/*=======================*/ +{ + return(buf_pool->n_pend_reads + + buf_pool->n_flush[BUF_FLUSH_LRU] + + buf_pool->n_flush[BUF_FLUSH_LIST] + + buf_pool->n_flush[BUF_FLUSH_SINGLE_PAGE]); +} + +/************************************************************************* +Returns the ratio in percents of modified pages in the buffer pool / +database pages in the buffer pool. */ +UNIV_INTERN +ulint +buf_get_modified_ratio_pct(void) +/*============================*/ +{ + ulint ratio; + + //buf_pool_mutex_enter(); /* optimistic */ + + ratio = (100 * UT_LIST_GET_LEN(buf_pool->flush_list)) + / (1 + UT_LIST_GET_LEN(buf_pool->LRU) + + UT_LIST_GET_LEN(buf_pool->free)); + + /* 1 + is there to avoid division by zero */ + + //buf_pool_mutex_exit(); /* optimistic */ + + return(ratio); +} + +/************************************************************************* +Prints info of the buffer i/o. */ +UNIV_INTERN +void +buf_print_io( +/*=========*/ + FILE* file) /* in/out: buffer where to print */ +{ + time_t current_time; + double time_elapsed; + ulint size; + + ut_ad(buf_pool); + size = buf_pool->curr_size; + + buf_pool_mutex_enter(); + + fprintf(file, + "Buffer pool size %lu\n" + "Buffer pool size, bytes %lu\n" + "Free buffers %lu\n" + "Database pages %lu\n" + "Modified db pages %lu\n" + "Pending reads %lu\n" + "Pending writes: LRU %lu, flush list %lu, single page %lu\n", + (ulong) size, + (ulong) size * UNIV_PAGE_SIZE, + (ulong) UT_LIST_GET_LEN(buf_pool->free), + (ulong) UT_LIST_GET_LEN(buf_pool->LRU), + (ulong) UT_LIST_GET_LEN(buf_pool->flush_list), + (ulong) buf_pool->n_pend_reads, + (ulong) buf_pool->n_flush[BUF_FLUSH_LRU] + + buf_pool->init_flush[BUF_FLUSH_LRU], + (ulong) buf_pool->n_flush[BUF_FLUSH_LIST] + + buf_pool->init_flush[BUF_FLUSH_LIST], + (ulong) buf_pool->n_flush[BUF_FLUSH_SINGLE_PAGE]); + + current_time = time(NULL); + time_elapsed = 0.001 + difftime(current_time, + buf_pool->last_printout_time); + buf_pool->last_printout_time = current_time; + + fprintf(file, + "Pages read %lu, created %lu, written %lu\n" + "%.2f reads/s, %.2f creates/s, %.2f writes/s\n", + (ulong) buf_pool->n_pages_read, + (ulong) buf_pool->n_pages_created, + (ulong) buf_pool->n_pages_written, + (buf_pool->n_pages_read - buf_pool->n_pages_read_old) + / time_elapsed, + (buf_pool->n_pages_created - buf_pool->n_pages_created_old) + / time_elapsed, + (buf_pool->n_pages_written - buf_pool->n_pages_written_old) + / time_elapsed); + + if (buf_pool->n_page_gets > buf_pool->n_page_gets_old) { + fprintf(file, "Buffer pool hit rate %lu / 1000\n", + (ulong) + (1000 - ((1000 * (buf_pool->n_pages_read + - buf_pool->n_pages_read_old)) + / (buf_pool->n_page_gets + - buf_pool->n_page_gets_old)))); + } else { + fputs("No buffer pool page gets since the last printout\n", + file); + } + + buf_pool->n_page_gets_old = buf_pool->n_page_gets; + buf_pool->n_pages_read_old = buf_pool->n_pages_read; + buf_pool->n_pages_created_old = buf_pool->n_pages_created; + buf_pool->n_pages_written_old = buf_pool->n_pages_written; + + /* Print some values to help us with visualizing what is + happening with LRU eviction. */ + fprintf(file, + "LRU len: %lu, unzip_LRU len: %lu\n" + "I/O sum[%lu]:cur[%lu], unzip sum[%lu]:cur[%lu]\n", + UT_LIST_GET_LEN(buf_pool->LRU), + UT_LIST_GET_LEN(buf_pool->unzip_LRU), + buf_LRU_stat_sum.io, buf_LRU_stat_cur.io, + buf_LRU_stat_sum.unzip, buf_LRU_stat_cur.unzip); + + buf_pool_mutex_exit(); +} + +/************************************************************************** +Refreshes the statistics used to print per-second averages. */ +UNIV_INTERN +void +buf_refresh_io_stats(void) +/*======================*/ +{ + buf_pool->last_printout_time = time(NULL); + buf_pool->n_page_gets_old = buf_pool->n_page_gets; + buf_pool->n_pages_read_old = buf_pool->n_pages_read; + buf_pool->n_pages_created_old = buf_pool->n_pages_created; + buf_pool->n_pages_written_old = buf_pool->n_pages_written; +} + +/************************************************************************* +Checks that all file pages in the buffer are in a replaceable state. */ +UNIV_INTERN +ibool +buf_all_freed(void) +/*===============*/ +{ + buf_chunk_t* chunk; + ulint i; + + ut_ad(buf_pool); + + buf_pool_mutex_enter(); + + chunk = buf_pool->chunks; + + for (i = buf_pool->n_chunks; i--; chunk++) { + + const buf_block_t* block = buf_chunk_not_freed(chunk); + + if (UNIV_LIKELY_NULL(block)) { + fprintf(stderr, + "Page %lu %lu still fixed or dirty\n", + (ulong) block->page.space, + (ulong) block->page.offset); + ut_error; + } + } + + buf_pool_mutex_exit(); + + return(TRUE); +} + +/************************************************************************* +Checks that there currently are no pending i/o-operations for the buffer +pool. */ +UNIV_INTERN +ibool +buf_pool_check_no_pending_io(void) +/*==============================*/ + /* out: TRUE if there is no pending i/o */ +{ + ibool ret; + + buf_pool_mutex_enter(); + + if (buf_pool->n_pend_reads + buf_pool->n_flush[BUF_FLUSH_LRU] + + buf_pool->n_flush[BUF_FLUSH_LIST] + + buf_pool->n_flush[BUF_FLUSH_SINGLE_PAGE]) { + ret = FALSE; + } else { + ret = TRUE; + } + + buf_pool_mutex_exit(); + + return(ret); +} + +/************************************************************************* +Gets the current length of the free list of buffer blocks. */ +UNIV_INTERN +ulint +buf_get_free_list_len(void) +/*=======================*/ +{ + ulint len; + + buf_pool_mutex_enter(); + + len = UT_LIST_GET_LEN(buf_pool->free); + + buf_pool_mutex_exit(); + + return(len); +} === added file 'storage/xtradb/buf/buf0flu.c' --- a/storage/xtradb/buf/buf0flu.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/buf/buf0flu.c 2009-05-04 04:32:30 +0000 @@ -0,0 +1,1277 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +The database buffer buf_pool flush algorithm + +Created 11/11/1995 Heikki Tuuri +*******************************************************/ + +#include "buf0flu.h" + +#ifdef UNIV_NONINL +#include "buf0flu.ic" +#include "trx0sys.h" +#endif + +#include "ut0byte.h" +#include "ut0lst.h" +#include "page0page.h" +#include "page0zip.h" +#include "fil0fil.h" +#include "buf0buf.h" +#include "buf0lru.h" +#include "buf0rea.h" +#include "ibuf0ibuf.h" +#include "log0log.h" +#include "os0file.h" +#include "trx0sys.h" +#include "srv0srv.h" + +#if defined UNIV_DEBUG || defined UNIV_BUF_DEBUG +/********************************************************************** +Validates the flush list. */ +static +ibool +buf_flush_validate_low(void); +/*========================*/ + /* out: TRUE if ok */ +#endif /* UNIV_DEBUG || UNIV_BUF_DEBUG */ + +/************************************************************************ +Inserts a modified block into the flush list. */ +UNIV_INTERN +void +buf_flush_insert_into_flush_list( +/*=============================*/ + buf_block_t* block) /* in/out: block which is modified */ +{ + ut_ad(buf_pool_mutex_own()); + ut_ad((UT_LIST_GET_FIRST(buf_pool->flush_list) == NULL) + || (UT_LIST_GET_FIRST(buf_pool->flush_list)->oldest_modification + <= block->page.oldest_modification)); + + ut_ad(buf_block_get_state(block) == BUF_BLOCK_FILE_PAGE); + ut_ad(block->page.in_LRU_list); + ut_ad(block->page.in_page_hash); + ut_ad(!block->page.in_zip_hash); + ut_ad(!block->page.in_flush_list); + ut_d(block->page.in_flush_list = TRUE); + UT_LIST_ADD_FIRST(list, buf_pool->flush_list, &block->page); + +#if defined UNIV_DEBUG || defined UNIV_BUF_DEBUG + ut_a(buf_flush_validate_low()); +#endif /* UNIV_DEBUG || UNIV_BUF_DEBUG */ +} + +/************************************************************************ +Inserts a modified block into the flush list in the right sorted position. +This function is used by recovery, because there the modifications do not +necessarily come in the order of lsn's. */ +UNIV_INTERN +void +buf_flush_insert_sorted_into_flush_list( +/*====================================*/ + buf_block_t* block) /* in/out: block which is modified */ +{ + buf_page_t* prev_b; + buf_page_t* b; + + ut_ad(buf_pool_mutex_own()); + ut_ad(buf_block_get_state(block) == BUF_BLOCK_FILE_PAGE); + + ut_ad(block->page.in_LRU_list); + ut_ad(block->page.in_page_hash); + ut_ad(!block->page.in_zip_hash); + ut_ad(!block->page.in_flush_list); + ut_d(block->page.in_flush_list = TRUE); + + prev_b = NULL; + b = UT_LIST_GET_FIRST(buf_pool->flush_list); + + while (b && b->oldest_modification > block->page.oldest_modification) { + ut_ad(b->in_flush_list); + prev_b = b; + b = UT_LIST_GET_NEXT(list, b); + } + + if (prev_b == NULL) { + UT_LIST_ADD_FIRST(list, buf_pool->flush_list, &block->page); + } else { + UT_LIST_INSERT_AFTER(list, buf_pool->flush_list, + prev_b, &block->page); + } + +#if defined UNIV_DEBUG || defined UNIV_BUF_DEBUG + ut_a(buf_flush_validate_low()); +#endif /* UNIV_DEBUG || UNIV_BUF_DEBUG */ +} + +/************************************************************************ +Returns TRUE if the file page block is immediately suitable for replacement, +i.e., the transition FILE_PAGE => NOT_USED allowed. */ +UNIV_INTERN +ibool +buf_flush_ready_for_replace( +/*========================*/ + /* out: TRUE if can replace immediately */ + buf_page_t* bpage) /* in: buffer control block, must be + buf_page_in_file(bpage) and in the LRU list */ +{ + //ut_ad(buf_pool_mutex_own()); + //ut_ad(mutex_own(buf_page_get_mutex(bpage))); + //ut_ad(bpage->in_LRU_list); /* optimistic use */ + + if (UNIV_LIKELY(bpage->in_LRU_list && buf_page_in_file(bpage))) { + + return(bpage->oldest_modification == 0 + && buf_page_get_io_fix(bpage) == BUF_IO_NONE + && bpage->buf_fix_count == 0); + } + + /* permited not to own LRU_mutex.. */ +/* + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: Error: buffer block state %lu" + " in the LRU list!\n", + (ulong) buf_page_get_state(bpage)); + ut_print_buf(stderr, bpage, sizeof(buf_page_t)); + putc('\n', stderr); +*/ + + return(FALSE); +} + +/************************************************************************ +Returns TRUE if the block is modified and ready for flushing. */ +UNIV_INLINE +ibool +buf_flush_ready_for_flush( +/*======================*/ + /* out: TRUE if can flush immediately */ + buf_page_t* bpage, /* in: buffer control block, must be + buf_page_in_file(bpage) */ + enum buf_flush flush_type)/* in: BUF_FLUSH_LRU or BUF_FLUSH_LIST */ +{ + ut_a(buf_page_in_file(bpage)); + ut_ad(buf_pool_mutex_own()); + ut_ad(mutex_own(buf_page_get_mutex(bpage))); + ut_ad(flush_type == BUF_FLUSH_LRU || BUF_FLUSH_LIST); + + if (bpage->oldest_modification != 0 + && buf_page_get_io_fix(bpage) == BUF_IO_NONE) { + ut_ad(bpage->in_flush_list); + + if (flush_type != BUF_FLUSH_LRU) { + + return(TRUE); + + } else if (bpage->buf_fix_count == 0) { + + /* If we are flushing the LRU list, to avoid deadlocks + we require the block not to be bufferfixed, and hence + not latched. */ + + return(TRUE); + } + } + + return(FALSE); +} + +/************************************************************************ +Remove a block from the flush list of modified blocks. */ +UNIV_INTERN +void +buf_flush_remove( +/*=============*/ + buf_page_t* bpage) /* in: pointer to the block in question */ +{ + ut_ad(buf_pool_mutex_own()); + ut_ad(mutex_own(buf_page_get_mutex(bpage))); + ut_ad(bpage->in_flush_list); + ut_d(bpage->in_flush_list = FALSE); + + switch (buf_page_get_state(bpage)) { + case BUF_BLOCK_ZIP_PAGE: + /* clean compressed pages should not be on the flush list */ + case BUF_BLOCK_ZIP_FREE: + case BUF_BLOCK_NOT_USED: + case BUF_BLOCK_READY_FOR_USE: + case BUF_BLOCK_MEMORY: + case BUF_BLOCK_REMOVE_HASH: + ut_error; + return; + case BUF_BLOCK_ZIP_DIRTY: + buf_page_set_state(bpage, BUF_BLOCK_ZIP_PAGE); + UT_LIST_REMOVE(list, buf_pool->flush_list, bpage); + buf_LRU_insert_zip_clean(bpage); + break; + case BUF_BLOCK_FILE_PAGE: + UT_LIST_REMOVE(list, buf_pool->flush_list, bpage); + break; + } + + bpage->oldest_modification = 0; + + ut_d(UT_LIST_VALIDATE(list, buf_page_t, buf_pool->flush_list)); +} + +/************************************************************************ +Updates the flush system data structures when a write is completed. */ +UNIV_INTERN +void +buf_flush_write_complete( +/*=====================*/ + buf_page_t* bpage) /* in: pointer to the block in question */ +{ + enum buf_flush flush_type; + + ut_ad(bpage); + + buf_flush_remove(bpage); + + flush_type = buf_page_get_flush_type(bpage); + buf_pool->n_flush[flush_type]--; + + if (flush_type == BUF_FLUSH_LRU) { + /* Put the block to the end of the LRU list to wait to be + moved to the free list */ + + buf_LRU_make_block_old(bpage); + + buf_pool->LRU_flush_ended++; + } + + /* fprintf(stderr, "n pending flush %lu\n", + buf_pool->n_flush[flush_type]); */ + + if ((buf_pool->n_flush[flush_type] == 0) + && (buf_pool->init_flush[flush_type] == FALSE)) { + + /* The running flush batch has ended */ + + os_event_set(buf_pool->no_flush[flush_type]); + } +} + +/************************************************************************ +Flushes possible buffered writes from the doublewrite memory buffer to disk, +and also wakes up the aio thread if simulated aio is used. It is very +important to call this function after a batch of writes has been posted, +and also when we may have to wait for a page latch! Otherwise a deadlock +of threads can occur. */ +static +void +buf_flush_buffered_writes(void) +/*===========================*/ +{ + byte* write_buf; + ulint len; + ulint len2; + ulint i; + + if (!srv_use_doublewrite_buf || trx_doublewrite == NULL) { + os_aio_simulated_wake_handler_threads(); + + return; + } + + mutex_enter(&(trx_doublewrite->mutex)); + + /* Write first to doublewrite buffer blocks. We use synchronous + aio and thus know that file write has been completed when the + control returns. */ + + if (trx_doublewrite->first_free == 0) { + + mutex_exit(&(trx_doublewrite->mutex)); + + return; + } + + for (i = 0; i < trx_doublewrite->first_free; i++) { + + const buf_block_t* block; + + block = (buf_block_t*) trx_doublewrite->buf_block_arr[i]; + + if (buf_block_get_state(block) != BUF_BLOCK_FILE_PAGE + || block->page.zip.data) { + /* No simple validate for compressed pages exists. */ + continue; + } + + if (UNIV_UNLIKELY + (memcmp(block->frame + (FIL_PAGE_LSN + 4), + block->frame + (UNIV_PAGE_SIZE + - FIL_PAGE_END_LSN_OLD_CHKSUM + 4), + 4))) { + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: ERROR: The page to be written" + " seems corrupt!\n" + "InnoDB: The lsn fields do not match!" + " Noticed in the buffer pool\n" + "InnoDB: before posting to the" + " doublewrite buffer.\n"); + } + + if (!block->check_index_page_at_flush) { + } else if (page_is_comp(block->frame)) { + if (UNIV_UNLIKELY + (!page_simple_validate_new(block->frame))) { +corrupted_page: + buf_page_print(block->frame, 0); + + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: Apparent corruption of an" + " index page n:o %lu in space %lu\n" + "InnoDB: to be written to data file." + " We intentionally crash server\n" + "InnoDB: to prevent corrupt data" + " from ending up in data\n" + "InnoDB: files.\n", + (ulong) buf_block_get_page_no(block), + (ulong) buf_block_get_space(block)); + + ut_error; + } + } else if (UNIV_UNLIKELY + (!page_simple_validate_old(block->frame))) { + + goto corrupted_page; + } + } + + /* increment the doublewrite flushed pages counter */ + srv_dblwr_pages_written+= trx_doublewrite->first_free; + srv_dblwr_writes++; + + len = ut_min(TRX_SYS_DOUBLEWRITE_BLOCK_SIZE, + trx_doublewrite->first_free) * UNIV_PAGE_SIZE; + + write_buf = trx_doublewrite->write_buf; + i = 0; + + fil_io(OS_FILE_WRITE, TRUE, TRX_SYS_SPACE, 0, + trx_doublewrite->block1, 0, len, + (void*) write_buf, NULL); + + for (len2 = 0; len2 + UNIV_PAGE_SIZE <= len; + len2 += UNIV_PAGE_SIZE, i++) { + const buf_block_t* block = (buf_block_t*) + trx_doublewrite->buf_block_arr[i]; + + if (UNIV_LIKELY(!block->page.zip.data) + && UNIV_LIKELY(buf_block_get_state(block) + == BUF_BLOCK_FILE_PAGE) + && UNIV_UNLIKELY + (memcmp(write_buf + len2 + (FIL_PAGE_LSN + 4), + write_buf + len2 + + (UNIV_PAGE_SIZE + - FIL_PAGE_END_LSN_OLD_CHKSUM + 4), 4))) { + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: ERROR: The page to be written" + " seems corrupt!\n" + "InnoDB: The lsn fields do not match!" + " Noticed in the doublewrite block1.\n"); + } + } + + if (trx_doublewrite->first_free <= TRX_SYS_DOUBLEWRITE_BLOCK_SIZE) { + goto flush; + } + + len = (trx_doublewrite->first_free - TRX_SYS_DOUBLEWRITE_BLOCK_SIZE) + * UNIV_PAGE_SIZE; + + write_buf = trx_doublewrite->write_buf + + TRX_SYS_DOUBLEWRITE_BLOCK_SIZE * UNIV_PAGE_SIZE; + ut_ad(i == TRX_SYS_DOUBLEWRITE_BLOCK_SIZE); + + fil_io(OS_FILE_WRITE, TRUE, TRX_SYS_SPACE, 0, + trx_doublewrite->block2, 0, len, + (void*) write_buf, NULL); + + for (len2 = 0; len2 + UNIV_PAGE_SIZE <= len; + len2 += UNIV_PAGE_SIZE, i++) { + const buf_block_t* block = (buf_block_t*) + trx_doublewrite->buf_block_arr[i]; + + if (UNIV_LIKELY(!block->page.zip.data) + && UNIV_LIKELY(buf_block_get_state(block) + == BUF_BLOCK_FILE_PAGE) + && UNIV_UNLIKELY + (memcmp(write_buf + len2 + (FIL_PAGE_LSN + 4), + write_buf + len2 + + (UNIV_PAGE_SIZE + - FIL_PAGE_END_LSN_OLD_CHKSUM + 4), 4))) { + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: ERROR: The page to be" + " written seems corrupt!\n" + "InnoDB: The lsn fields do not match!" + " Noticed in" + " the doublewrite block2.\n"); + } + } + +flush: + /* Now flush the doublewrite buffer data to disk */ + + fil_flush(TRX_SYS_SPACE); + + /* We know that the writes have been flushed to disk now + and in recovery we will find them in the doublewrite buffer + blocks. Next do the writes to the intended positions. */ + + for (i = 0; i < trx_doublewrite->first_free; i++) { + const buf_block_t* block = (buf_block_t*) + trx_doublewrite->buf_block_arr[i]; + + ut_a(buf_page_in_file(&block->page)); + if (UNIV_LIKELY_NULL(block->page.zip.data)) { + fil_io(OS_FILE_WRITE | OS_AIO_SIMULATED_WAKE_LATER, + FALSE, buf_page_get_space(&block->page), + buf_page_get_zip_size(&block->page), + buf_page_get_page_no(&block->page), 0, + buf_page_get_zip_size(&block->page), + (void*)block->page.zip.data, + (void*)block); + + /* Increment the counter of I/O operations used + for selecting LRU policy. */ + buf_LRU_stat_inc_io(); + + continue; + } + + ut_a(buf_block_get_state(block) == BUF_BLOCK_FILE_PAGE); + + if (UNIV_UNLIKELY(memcmp(block->frame + (FIL_PAGE_LSN + 4), + block->frame + + (UNIV_PAGE_SIZE + - FIL_PAGE_END_LSN_OLD_CHKSUM + 4), + 4))) { + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: ERROR: The page to be written" + " seems corrupt!\n" + "InnoDB: The lsn fields do not match!" + " Noticed in the buffer pool\n" + "InnoDB: after posting and flushing" + " the doublewrite buffer.\n" + "InnoDB: Page buf fix count %lu," + " io fix %lu, state %lu\n", + (ulong)block->page.buf_fix_count, + (ulong)buf_block_get_io_fix(block), + (ulong)buf_block_get_state(block)); + } + + fil_io(OS_FILE_WRITE | OS_AIO_SIMULATED_WAKE_LATER, + FALSE, buf_block_get_space(block), 0, + buf_block_get_page_no(block), 0, UNIV_PAGE_SIZE, + (void*)block->frame, (void*)block); + + /* Increment the counter of I/O operations used + for selecting LRU policy. */ + buf_LRU_stat_inc_io(); + } + + /* Wake possible simulated aio thread to actually post the + writes to the operating system */ + + os_aio_simulated_wake_handler_threads(); + + /* Wait that all async writes to tablespaces have been posted to + the OS */ + + os_aio_wait_until_no_pending_writes(); + + /* Now we flush the data to disk (for example, with fsync) */ + + fil_flush_file_spaces(FIL_TABLESPACE); + + /* We can now reuse the doublewrite memory buffer: */ + + trx_doublewrite->first_free = 0; + + mutex_exit(&(trx_doublewrite->mutex)); +} + +/************************************************************************ +Posts a buffer page for writing. If the doublewrite memory buffer is +full, calls buf_flush_buffered_writes and waits for for free space to +appear. */ +static +void +buf_flush_post_to_doublewrite_buf( +/*==============================*/ + buf_page_t* bpage) /* in: buffer block to write */ +{ + ulint zip_size; +try_again: + mutex_enter(&(trx_doublewrite->mutex)); + + ut_a(buf_page_in_file(bpage)); + + if (trx_doublewrite->first_free + >= 2 * TRX_SYS_DOUBLEWRITE_BLOCK_SIZE) { + mutex_exit(&(trx_doublewrite->mutex)); + + buf_flush_buffered_writes(); + + goto try_again; + } + + zip_size = buf_page_get_zip_size(bpage); + + if (UNIV_UNLIKELY(zip_size)) { + /* Copy the compressed page and clear the rest. */ + memcpy(trx_doublewrite->write_buf + + UNIV_PAGE_SIZE * trx_doublewrite->first_free, + bpage->zip.data, zip_size); + memset(trx_doublewrite->write_buf + + UNIV_PAGE_SIZE * trx_doublewrite->first_free + + zip_size, 0, UNIV_PAGE_SIZE - zip_size); + } else { + ut_a(buf_page_get_state(bpage) == BUF_BLOCK_FILE_PAGE); + + memcpy(trx_doublewrite->write_buf + + UNIV_PAGE_SIZE * trx_doublewrite->first_free, + ((buf_block_t*) bpage)->frame, UNIV_PAGE_SIZE); + } + + trx_doublewrite->buf_block_arr[trx_doublewrite->first_free] = bpage; + + trx_doublewrite->first_free++; + + if (trx_doublewrite->first_free + >= 2 * TRX_SYS_DOUBLEWRITE_BLOCK_SIZE) { + mutex_exit(&(trx_doublewrite->mutex)); + + buf_flush_buffered_writes(); + + return; + } + + mutex_exit(&(trx_doublewrite->mutex)); +} + +/************************************************************************ +Initializes a page for writing to the tablespace. */ +UNIV_INTERN +void +buf_flush_init_for_writing( +/*=======================*/ + byte* page, /* in/out: page */ + void* page_zip_, /* in/out: compressed page, or NULL */ + ib_uint64_t newest_lsn) /* in: newest modification lsn + to the page */ +{ + ut_ad(page); + + if (page_zip_) { + page_zip_des_t* page_zip = page_zip_; + ulint zip_size = page_zip_get_size(page_zip); + ut_ad(zip_size); + ut_ad(ut_is_2pow(zip_size)); + ut_ad(zip_size <= UNIV_PAGE_SIZE); + + switch (UNIV_EXPECT(fil_page_get_type(page), FIL_PAGE_INDEX)) { + case FIL_PAGE_TYPE_ALLOCATED: + case FIL_PAGE_INODE: + case FIL_PAGE_IBUF_BITMAP: + case FIL_PAGE_TYPE_FSP_HDR: + case FIL_PAGE_TYPE_XDES: + /* These are essentially uncompressed pages. */ + memcpy(page_zip->data, page, zip_size); + /* fall through */ + case FIL_PAGE_TYPE_ZBLOB: + case FIL_PAGE_TYPE_ZBLOB2: + case FIL_PAGE_INDEX: + mach_write_ull(page_zip->data + + FIL_PAGE_LSN, newest_lsn); + memset(page_zip->data + FIL_PAGE_FILE_FLUSH_LSN, 0, 8); + mach_write_to_4(page_zip->data + + FIL_PAGE_SPACE_OR_CHKSUM, + srv_use_checksums + ? page_zip_calc_checksum( + page_zip->data, zip_size) + : BUF_NO_CHECKSUM_MAGIC); + return; + } + + ut_print_timestamp(stderr); + fputs(" InnoDB: ERROR: The compressed page to be written" + " seems corrupt:", stderr); + ut_print_buf(stderr, page, zip_size); + fputs("\nInnoDB: Possibly older version of the page:", stderr); + ut_print_buf(stderr, page_zip->data, zip_size); + putc('\n', stderr); + ut_error; + } + + /* Write the newest modification lsn to the page header and trailer */ + mach_write_ull(page + FIL_PAGE_LSN, newest_lsn); + + mach_write_ull(page + UNIV_PAGE_SIZE - FIL_PAGE_END_LSN_OLD_CHKSUM, + newest_lsn); + + /* Store the new formula checksum */ + + mach_write_to_4(page + FIL_PAGE_SPACE_OR_CHKSUM, + srv_use_checksums + ? buf_calc_page_new_checksum(page) + : BUF_NO_CHECKSUM_MAGIC); + + /* We overwrite the first 4 bytes of the end lsn field to store + the old formula checksum. Since it depends also on the field + FIL_PAGE_SPACE_OR_CHKSUM, it has to be calculated after storing the + new formula checksum. */ + + mach_write_to_4(page + UNIV_PAGE_SIZE - FIL_PAGE_END_LSN_OLD_CHKSUM, + srv_use_checksums + ? buf_calc_page_old_checksum(page) + : BUF_NO_CHECKSUM_MAGIC); +} + +/************************************************************************ +Does an asynchronous write of a buffer page. NOTE: in simulated aio and +also when the doublewrite buffer is used, we must call +buf_flush_buffered_writes after we have posted a batch of writes! */ +static +void +buf_flush_write_block_low( +/*======================*/ + buf_page_t* bpage) /* in: buffer block to write */ +{ + ulint zip_size = buf_page_get_zip_size(bpage); + page_t* frame = NULL; +#ifdef UNIV_LOG_DEBUG + static ibool univ_log_debug_warned; +#endif /* UNIV_LOG_DEBUG */ + + ut_ad(buf_page_in_file(bpage)); + + /* We are not holding buf_pool_mutex or block_mutex here. + Nevertheless, it is safe to access bpage, because it is + io_fixed and oldest_modification != 0. Thus, it cannot be + relocated in the buffer pool or removed from flush_list or + LRU_list. */ + ut_ad(!buf_pool_mutex_own()); + ut_ad(!mutex_own(buf_page_get_mutex(bpage))); + ut_ad(buf_page_get_io_fix(bpage) == BUF_IO_WRITE); + ut_ad(bpage->oldest_modification != 0); + +#ifdef UNIV_IBUF_COUNT_DEBUG + ut_a(ibuf_count_get(bpage->space, bpage->offset) == 0); +#endif + ut_ad(bpage->newest_modification != 0); + +#ifdef UNIV_LOG_DEBUG + if (!univ_log_debug_warned) { + univ_log_debug_warned = TRUE; + fputs("Warning: cannot force log to disk if" + " UNIV_LOG_DEBUG is defined!\n" + "Crash recovery will not work!\n", + stderr); + } +#else + /* Force the log to the disk before writing the modified block */ + log_write_up_to(bpage->newest_modification, LOG_WAIT_ALL_GROUPS, TRUE); +#endif + switch (buf_page_get_state(bpage)) { + case BUF_BLOCK_ZIP_FREE: + case BUF_BLOCK_ZIP_PAGE: /* The page should be dirty. */ + case BUF_BLOCK_NOT_USED: + case BUF_BLOCK_READY_FOR_USE: + case BUF_BLOCK_MEMORY: + case BUF_BLOCK_REMOVE_HASH: + ut_error; + break; + case BUF_BLOCK_ZIP_DIRTY: + frame = bpage->zip.data; + if (UNIV_LIKELY(srv_use_checksums)) { + ut_a(mach_read_from_4(frame + FIL_PAGE_SPACE_OR_CHKSUM) + == page_zip_calc_checksum(frame, zip_size)); + } + mach_write_ull(frame + FIL_PAGE_LSN, + bpage->newest_modification); + memset(frame + FIL_PAGE_FILE_FLUSH_LSN, 0, 8); + break; + case BUF_BLOCK_FILE_PAGE: + frame = bpage->zip.data; + if (!frame) { + frame = ((buf_block_t*) bpage)->frame; + } + + buf_flush_init_for_writing(((buf_block_t*) bpage)->frame, + bpage->zip.data + ? &bpage->zip : NULL, + bpage->newest_modification); + break; + } + + if (!srv_use_doublewrite_buf || !trx_doublewrite) { + fil_io(OS_FILE_WRITE | OS_AIO_SIMULATED_WAKE_LATER, + FALSE, buf_page_get_space(bpage), zip_size, + buf_page_get_page_no(bpage), 0, + zip_size ? zip_size : UNIV_PAGE_SIZE, + frame, bpage); + } else { + buf_flush_post_to_doublewrite_buf(bpage); + } +} + +/************************************************************************ +Writes a flushable page asynchronously from the buffer pool to a file. +NOTE: in simulated aio we must call +os_aio_simulated_wake_handler_threads after we have posted a batch of +writes! NOTE: buf_pool_mutex and buf_page_get_mutex(bpage) must be +held upon entering this function, and they will be released by this +function. */ +static +void +buf_flush_page( +/*===========*/ + buf_page_t* bpage, /* in: buffer control block */ + enum buf_flush flush_type) /* in: BUF_FLUSH_LRU + or BUF_FLUSH_LIST */ +{ + mutex_t* block_mutex; + ibool is_uncompressed; + + ut_ad(flush_type == BUF_FLUSH_LRU || flush_type == BUF_FLUSH_LIST); + ut_ad(buf_pool_mutex_own()); + ut_ad(buf_page_in_file(bpage)); + + block_mutex = buf_page_get_mutex(bpage); + ut_ad(mutex_own(block_mutex)); + + ut_ad(buf_flush_ready_for_flush(bpage, flush_type)); + + buf_page_set_io_fix(bpage, BUF_IO_WRITE); + + buf_page_set_flush_type(bpage, flush_type); + + if (buf_pool->n_flush[flush_type] == 0) { + + os_event_reset(buf_pool->no_flush[flush_type]); + } + + buf_pool->n_flush[flush_type]++; + + is_uncompressed = (buf_page_get_state(bpage) == BUF_BLOCK_FILE_PAGE); + ut_ad(is_uncompressed == (block_mutex != &buf_pool_zip_mutex)); + + switch (flush_type) { + ibool is_s_latched; + case BUF_FLUSH_LIST: + /* If the simulated aio thread is not running, we must + not wait for any latch, as we may end up in a deadlock: + if buf_fix_count == 0, then we know we need not wait */ + + is_s_latched = (bpage->buf_fix_count == 0); + if (is_s_latched && is_uncompressed) { + rw_lock_s_lock_gen(&((buf_block_t*) bpage)->lock, + BUF_IO_WRITE); + } + + mutex_exit(block_mutex); + buf_pool_mutex_exit(); + + /* Even though bpage is not protected by any mutex at + this point, it is safe to access bpage, because it is + io_fixed and oldest_modification != 0. Thus, it + cannot be relocated in the buffer pool or removed from + flush_list or LRU_list. */ + + if (!is_s_latched) { + buf_flush_buffered_writes(); + + if (is_uncompressed) { + rw_lock_s_lock_gen(&((buf_block_t*) bpage) + ->lock, BUF_IO_WRITE); + } + } + + break; + + case BUF_FLUSH_LRU: + /* VERY IMPORTANT: + Because any thread may call the LRU flush, even when owning + locks on pages, to avoid deadlocks, we must make sure that the + s-lock is acquired on the page without waiting: this is + accomplished because buf_flush_ready_for_flush() must hold, + and that requires the page not to be bufferfixed. */ + + if (is_uncompressed) { + rw_lock_s_lock_gen(&((buf_block_t*) bpage)->lock, + BUF_IO_WRITE); + } + + /* Note that the s-latch is acquired before releasing the + buf_pool mutex: this ensures that the latch is acquired + immediately. */ + + mutex_exit(block_mutex); + buf_pool_mutex_exit(); + break; + + default: + ut_error; + } + + /* Even though bpage is not protected by any mutex at this + point, it is safe to access bpage, because it is io_fixed and + oldest_modification != 0. Thus, it cannot be relocated in the + buffer pool or removed from flush_list or LRU_list. */ + +#ifdef UNIV_DEBUG + if (buf_debug_prints) { + fprintf(stderr, + "Flushing %u space %u page %u\n", + flush_type, bpage->space, bpage->offset); + } +#endif /* UNIV_DEBUG */ + buf_flush_write_block_low(bpage); +} + +/*************************************************************** +Flushes to disk all flushable pages within the flush area. */ +static +ulint +buf_flush_try_neighbors( +/*====================*/ + /* out: number of pages flushed */ + ulint space, /* in: space id */ + ulint offset, /* in: page offset */ + enum buf_flush flush_type) /* in: BUF_FLUSH_LRU or + BUF_FLUSH_LIST */ +{ + buf_page_t* bpage; + ulint low, high; + ulint count = 0; + ulint i; + + ut_ad(flush_type == BUF_FLUSH_LRU || flush_type == BUF_FLUSH_LIST); + + if (UT_LIST_GET_LEN(buf_pool->LRU) < BUF_LRU_OLD_MIN_LEN) { + /* If there is little space, it is better not to flush any + block except from the end of the LRU list */ + + low = offset; + high = offset + 1; + } else { + /* When flushed, dirty blocks are searched in neighborhoods of + this size, and flushed along with the original page. */ + + ulint buf_flush_area = ut_min(BUF_READ_AHEAD_AREA, + buf_pool->curr_size / 16); + + low = (offset / buf_flush_area) * buf_flush_area; + high = (offset / buf_flush_area + 1) * buf_flush_area; + } + + /* fprintf(stderr, "Flush area: low %lu high %lu\n", low, high); */ + + if (high > fil_space_get_size(space)) { + high = fil_space_get_size(space); + } + + buf_pool_mutex_enter(); + + for (i = low; i < high; i++) { + + bpage = buf_page_hash_get(space, i); + + if (!bpage) { + + continue; + } + + ut_a(buf_page_in_file(bpage)); + + /* We avoid flushing 'non-old' blocks in an LRU flush, + because the flushed blocks are soon freed */ + + if (flush_type != BUF_FLUSH_LRU + || i == offset + || buf_page_is_old(bpage)) { + mutex_t* block_mutex = buf_page_get_mutex(bpage); + + mutex_enter(block_mutex); + + if (buf_flush_ready_for_flush(bpage, flush_type) + && (i == offset || !bpage->buf_fix_count)) { + /* We only try to flush those + neighbors != offset where the buf fix count is + zero, as we then know that we probably can + latch the page without a semaphore wait. + Semaphore waits are expensive because we must + flush the doublewrite buffer before we start + waiting. */ + + buf_flush_page(bpage, flush_type); + ut_ad(!mutex_own(block_mutex)); + count++; + + buf_pool_mutex_enter(); + } else { + mutex_exit(block_mutex); + } + } + } + + buf_pool_mutex_exit(); + + return(count); +} + +/*********************************************************************** +This utility flushes dirty blocks from the end of the LRU list or flush_list. +NOTE 1: in the case of an LRU flush the calling thread may own latches to +pages: to avoid deadlocks, this function must be written so that it cannot +end up waiting for these latches! NOTE 2: in the case of a flush list flush, +the calling thread is not allowed to own any latches on pages! */ +UNIV_INTERN +ulint +buf_flush_batch( +/*============*/ + /* out: number of blocks for which the + write request was queued; + ULINT_UNDEFINED if there was a flush + of the same type already running */ + enum buf_flush flush_type, /* in: BUF_FLUSH_LRU or + BUF_FLUSH_LIST; if BUF_FLUSH_LIST, + then the caller must not own any + latches on pages */ + ulint min_n, /* in: wished minimum mumber of blocks + flushed (it is not guaranteed that the + actual number is that big, though) */ + ib_uint64_t lsn_limit) /* in the case BUF_FLUSH_LIST all + blocks whose oldest_modification is + smaller than this should be flushed + (if their number does not exceed + min_n), otherwise ignored */ +{ + buf_page_t* bpage; + ulint page_count = 0; + ulint old_page_count; + ulint space; + ulint offset; + + ut_ad((flush_type == BUF_FLUSH_LRU) + || (flush_type == BUF_FLUSH_LIST)); +#ifdef UNIV_SYNC_DEBUG + ut_ad((flush_type != BUF_FLUSH_LIST) + || sync_thread_levels_empty_gen(TRUE)); +#endif /* UNIV_SYNC_DEBUG */ + buf_pool_mutex_enter(); + + if ((buf_pool->n_flush[flush_type] > 0) + || (buf_pool->init_flush[flush_type] == TRUE)) { + + /* There is already a flush batch of the same type running */ + + buf_pool_mutex_exit(); + + return(ULINT_UNDEFINED); + } + + buf_pool->init_flush[flush_type] = TRUE; + + for (;;) { +flush_next: + /* If we have flushed enough, leave the loop */ + if (page_count >= min_n) { + + break; + } + + /* Start from the end of the list looking for a suitable + block to be flushed. */ + + if (flush_type == BUF_FLUSH_LRU) { + bpage = UT_LIST_GET_LAST(buf_pool->LRU); + } else { + ut_ad(flush_type == BUF_FLUSH_LIST); + + bpage = UT_LIST_GET_LAST(buf_pool->flush_list); + if (!bpage + || bpage->oldest_modification >= lsn_limit) { + /* We have flushed enough */ + + break; + } + ut_ad(bpage->in_flush_list); + } + + /* Note that after finding a single flushable page, we try to + flush also all its neighbors, and after that start from the + END of the LRU list or flush list again: the list may change + during the flushing and we cannot safely preserve within this + function a pointer to a block in the list! */ + + do { + mutex_t*block_mutex = buf_page_get_mutex(bpage); + ibool ready; + + ut_a(buf_page_in_file(bpage)); + + mutex_enter(block_mutex); + ready = buf_flush_ready_for_flush(bpage, flush_type); + mutex_exit(block_mutex); + + if (ready) { + space = buf_page_get_space(bpage); + offset = buf_page_get_page_no(bpage); + + buf_pool_mutex_exit(); + + old_page_count = page_count; + + if (srv_flush_neighbor_pages) { + /* Try to flush also all the neighbors */ + page_count += buf_flush_try_neighbors( + space, offset, flush_type); + } else { + /* Try to flush the page only */ + buf_pool_mutex_enter(); + + mutex_t* block_mutex = buf_page_get_mutex(bpage); + mutex_enter(block_mutex); + + buf_page_t* bpage_tmp = buf_page_hash_get(space, offset); + if (bpage_tmp) { + buf_flush_page(bpage_tmp, flush_type); + page_count++; + } + } + /* fprintf(stderr, + "Flush type %lu, page no %lu, neighb %lu\n", + flush_type, offset, + page_count - old_page_count); */ + + buf_pool_mutex_enter(); + goto flush_next; + + } else if (flush_type == BUF_FLUSH_LRU) { + bpage = UT_LIST_GET_PREV(LRU, bpage); + } else { + ut_ad(flush_type == BUF_FLUSH_LIST); + + bpage = UT_LIST_GET_PREV(list, bpage); + ut_ad(!bpage || bpage->in_flush_list); + } + } while (bpage != NULL); + + /* If we could not find anything to flush, leave the loop */ + + break; + } + + buf_pool->init_flush[flush_type] = FALSE; + + if (buf_pool->n_flush[flush_type] == 0) { + + /* The running flush batch has ended */ + + os_event_set(buf_pool->no_flush[flush_type]); + } + + buf_pool_mutex_exit(); + + buf_flush_buffered_writes(); + +#ifdef UNIV_DEBUG + if (buf_debug_prints && page_count > 0) { + ut_a(flush_type == BUF_FLUSH_LRU + || flush_type == BUF_FLUSH_LIST); + fprintf(stderr, flush_type == BUF_FLUSH_LRU + ? "Flushed %lu pages in LRU flush\n" + : "Flushed %lu pages in flush list flush\n", + (ulong) page_count); + } +#endif /* UNIV_DEBUG */ + + srv_buf_pool_flushed += page_count; + + return(page_count); +} + +/********************************************************************** +Waits until a flush batch of the given type ends */ +UNIV_INTERN +void +buf_flush_wait_batch_end( +/*=====================*/ + enum buf_flush type) /* in: BUF_FLUSH_LRU or BUF_FLUSH_LIST */ +{ + ut_ad((type == BUF_FLUSH_LRU) || (type == BUF_FLUSH_LIST)); + + os_event_wait(buf_pool->no_flush[type]); +} + +/********************************************************************** +Gives a recommendation of how many blocks should be flushed to establish +a big enough margin of replaceable blocks near the end of the LRU list +and in the free list. */ +static +ulint +buf_flush_LRU_recommendation(void) +/*==============================*/ + /* out: number of blocks which should be flushed + from the end of the LRU list */ +{ + buf_page_t* bpage; + ulint n_replaceable; + ulint distance = 0; + ibool have_LRU_mutex = FALSE; + + if(UT_LIST_GET_LEN(buf_pool->unzip_LRU)) + have_LRU_mutex = TRUE; + + //buf_pool_mutex_enter(); + if (have_LRU_mutex) + buf_pool_mutex_enter(); + + n_replaceable = UT_LIST_GET_LEN(buf_pool->free); + + bpage = UT_LIST_GET_LAST(buf_pool->LRU); + + while ((bpage != NULL) + && (n_replaceable < BUF_FLUSH_FREE_BLOCK_MARGIN + + BUF_FLUSH_EXTRA_MARGIN) + && (distance < BUF_LRU_FREE_SEARCH_LEN)) { + + if (!bpage->in_LRU_list) { + /* reatart. but it is very optimistic */ + bpage = UT_LIST_GET_LAST(buf_pool->LRU); + continue; + } + + mutex_t* block_mutex = buf_page_get_mutex(bpage); + + mutex_enter(block_mutex); + + if (buf_flush_ready_for_replace(bpage)) { + n_replaceable++; + } + + mutex_exit(block_mutex); + + distance++; + + bpage = UT_LIST_GET_PREV(LRU, bpage); + } + + //buf_pool_mutex_exit(); + if (have_LRU_mutex) + buf_pool_mutex_exit(); + + if (n_replaceable >= BUF_FLUSH_FREE_BLOCK_MARGIN) { + + return(0); + } + + return(BUF_FLUSH_FREE_BLOCK_MARGIN + BUF_FLUSH_EXTRA_MARGIN + - n_replaceable); +} + +/************************************************************************* +Flushes pages from the end of the LRU list if there is too small a margin +of replaceable pages there or in the free list. VERY IMPORTANT: this function +is called also by threads which have locks on pages. To avoid deadlocks, we +flush only pages such that the s-lock required for flushing can be acquired +immediately, without waiting. */ +UNIV_INTERN +void +buf_flush_free_margin( +/*=======================*/ + ibool wait) +{ + ulint n_to_flush; + ulint n_flushed; + + n_to_flush = buf_flush_LRU_recommendation(); + + if (n_to_flush > 0) { + n_flushed = buf_flush_batch(BUF_FLUSH_LRU, n_to_flush, 0); + if (wait && n_flushed == ULINT_UNDEFINED) { + /* There was an LRU type flush batch already running; + let us wait for it to end */ + + buf_flush_wait_batch_end(BUF_FLUSH_LRU); + } + } +} + +#if defined UNIV_DEBUG || defined UNIV_BUF_DEBUG +/********************************************************************** +Validates the flush list. */ +static +ibool +buf_flush_validate_low(void) +/*========================*/ + /* out: TRUE if ok */ +{ + buf_page_t* bpage; + + UT_LIST_VALIDATE(list, buf_page_t, buf_pool->flush_list); + + bpage = UT_LIST_GET_FIRST(buf_pool->flush_list); + + while (bpage != NULL) { + const ib_uint64_t om = bpage->oldest_modification; + ut_ad(bpage->in_flush_list); + ut_a(buf_page_in_file(bpage)); + ut_a(om > 0); + + bpage = UT_LIST_GET_NEXT(list, bpage); + + ut_a(!bpage || om >= bpage->oldest_modification); + } + + return(TRUE); +} + +/********************************************************************** +Validates the flush list. */ +UNIV_INTERN +ibool +buf_flush_validate(void) +/*====================*/ + /* out: TRUE if ok */ +{ + ibool ret; + + buf_pool_mutex_enter(); + + ret = buf_flush_validate_low(); + + buf_pool_mutex_exit(); + + return(ret); +} +#endif /* UNIV_DEBUG || UNIV_BUF_DEBUG */ === added file 'storage/xtradb/buf/buf0lru.c' --- a/storage/xtradb/buf/buf0lru.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/buf/buf0lru.c 2009-05-04 04:32:30 +0000 @@ -0,0 +1,2060 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +The database buffer replacement algorithm + +Created 11/5/1995 Heikki Tuuri +*******************************************************/ + +#include "buf0lru.h" + +#ifdef UNIV_NONINL +#include "buf0lru.ic" +#endif + +#include "ut0byte.h" +#include "ut0lst.h" +#include "ut0rnd.h" +#include "sync0sync.h" +#include "sync0rw.h" +#include "hash0hash.h" +#include "os0sync.h" +#include "fil0fil.h" +#include "btr0btr.h" +#include "buf0buddy.h" +#include "buf0buf.h" +#include "buf0flu.h" +#include "buf0rea.h" +#include "btr0sea.h" +#include "ibuf0ibuf.h" +#include "os0file.h" +#include "page0zip.h" +#include "log0recv.h" +#include "srv0srv.h" + +/* The number of blocks from the LRU_old pointer onward, including the block +pointed to, must be 3/8 of the whole LRU list length, except that the +tolerance defined below is allowed. Note that the tolerance must be small +enough such that for even the BUF_LRU_OLD_MIN_LEN long LRU list, the +LRU_old pointer is not allowed to point to either end of the LRU list. */ + +#define BUF_LRU_OLD_TOLERANCE 20 + +/* The whole LRU list length is divided by this number to determine an +initial segment in buf_LRU_get_recent_limit */ + +#define BUF_LRU_INITIAL_RATIO 8 + +/* When dropping the search hash index entries before deleting an ibd +file, we build a local array of pages belonging to that tablespace +in the buffer pool. Following is the size of that array. */ +#define BUF_LRU_DROP_SEARCH_HASH_SIZE 1024 + +/* If we switch on the InnoDB monitor because there are too few available +frames in the buffer pool, we set this to TRUE */ +UNIV_INTERN ibool buf_lru_switched_on_innodb_mon = FALSE; + +/********************************************************************** +These statistics are not 'of' LRU but 'for' LRU. We keep count of I/O +and page_zip_decompress() operations. Based on the statistics, +buf_LRU_evict_from_unzip_LRU() decides if we want to evict from +unzip_LRU or the regular LRU. From unzip_LRU, we will only evict the +uncompressed frame (meaning we can evict dirty blocks as well). From +the regular LRU, we will evict the entire block (i.e.: both the +uncompressed and compressed data), which must be clean. */ + +/* Number of intervals for which we keep the history of these stats. +Each interval is 1 second, defined by the rate at which +srv_error_monitor_thread() calls buf_LRU_stat_update(). */ +#define BUF_LRU_STAT_N_INTERVAL 50 + +/* Co-efficient with which we multiply I/O operations to equate them +with page_zip_decompress() operations. */ +#define BUF_LRU_IO_TO_UNZIP_FACTOR 50 + +/* Sampled values buf_LRU_stat_cur. +Protected by buf_pool_mutex. Updated by buf_LRU_stat_update(). */ +static buf_LRU_stat_t buf_LRU_stat_arr[BUF_LRU_STAT_N_INTERVAL]; +/* Cursor to buf_LRU_stat_arr[] that is updated in a round-robin fashion. */ +static ulint buf_LRU_stat_arr_ind; + +/* Current operation counters. Not protected by any mutex. Cleared +by buf_LRU_stat_update(). */ +UNIV_INTERN buf_LRU_stat_t buf_LRU_stat_cur; + +/* Running sum of past values of buf_LRU_stat_cur. +Updated by buf_LRU_stat_update(). Protected by buf_pool_mutex. */ +UNIV_INTERN buf_LRU_stat_t buf_LRU_stat_sum; + +/********************************************************************** +Takes a block out of the LRU list and page hash table. +If the block is compressed-only (BUF_BLOCK_ZIP_PAGE), +the object will be freed and buf_pool_zip_mutex will be released. + +If a compressed page or a compressed-only block descriptor is freed, +other compressed pages or compressed-only block descriptors may be +relocated. */ +static +enum buf_page_state +buf_LRU_block_remove_hashed_page( +/*=============================*/ + /* out: the new state of the block + (BUF_BLOCK_ZIP_FREE if the state was + BUF_BLOCK_ZIP_PAGE, or BUF_BLOCK_REMOVE_HASH + otherwise) */ + buf_page_t* bpage, /* in: block, must contain a file page and + be in a state where it can be freed; there + may or may not be a hash index to the page */ + ibool zip); /* in: TRUE if should remove also the + compressed page of an uncompressed page */ +/********************************************************************** +Puts a file page whose has no hash index to the free list. */ +static +void +buf_LRU_block_free_hashed_page( +/*===========================*/ + buf_block_t* block); /* in: block, must contain a file page and + be in a state where it can be freed */ + +/********************************************************************** +Determines if the unzip_LRU list should be used for evicting a victim +instead of the general LRU list. */ +UNIV_INLINE +ibool +buf_LRU_evict_from_unzip_LRU(void) +/*==============================*/ + /* out: TRUE if should use unzip_LRU */ +{ + ulint io_avg; + ulint unzip_avg; + + ut_ad(buf_pool_mutex_own()); + + /* If the unzip_LRU list is empty, we can only use the LRU. */ + if (UT_LIST_GET_LEN(buf_pool->unzip_LRU) == 0) { + return(FALSE); + } + + /* If unzip_LRU is at most 10% of the size of the LRU list, + then use the LRU. This slack allows us to keep hot + decompressed pages in the buffer pool. */ + if (UT_LIST_GET_LEN(buf_pool->unzip_LRU) + <= UT_LIST_GET_LEN(buf_pool->LRU) / 10) { + return(FALSE); + } + + /* If eviction hasn't started yet, we assume by default + that a workload is disk bound. */ + if (buf_pool->freed_page_clock == 0) { + return(TRUE); + } + + /* Calculate the average over past intervals, and add the values + of the current interval. */ + io_avg = buf_LRU_stat_sum.io / BUF_LRU_STAT_N_INTERVAL + + buf_LRU_stat_cur.io; + unzip_avg = buf_LRU_stat_sum.unzip / BUF_LRU_STAT_N_INTERVAL + + buf_LRU_stat_cur.unzip; + + /* Decide based on our formula. If the load is I/O bound + (unzip_avg is smaller than the weighted io_avg), evict an + uncompressed frame from unzip_LRU. Otherwise we assume that + the load is CPU bound and evict from the regular LRU. */ + return(unzip_avg <= io_avg * BUF_LRU_IO_TO_UNZIP_FACTOR); +} + +/********************************************************************** +Attempts to drop page hash index on a batch of pages belonging to a +particular space id. */ +static +void +buf_LRU_drop_page_hash_batch( +/*=========================*/ + ulint space_id, /* in: space id */ + ulint zip_size, /* in: compressed page size in bytes + or 0 for uncompressed pages */ + const ulint* arr, /* in: array of page_no */ + ulint count) /* in: number of entries in array */ +{ + ulint i; + + ut_ad(arr != NULL); + ut_ad(count <= BUF_LRU_DROP_SEARCH_HASH_SIZE); + + for (i = 0; i < count; ++i) { + btr_search_drop_page_hash_when_freed(space_id, zip_size, + arr[i]); + } +} + +/********************************************************************** +When doing a DROP TABLE/DISCARD TABLESPACE we have to drop all page +hash index entries belonging to that table. This function tries to +do that in batch. Note that this is a 'best effort' attempt and does +not guarantee that ALL hash entries will be removed. */ +static +void +buf_LRU_drop_page_hash_for_tablespace( +/*==================================*/ + ulint id) /* in: space id */ +{ + buf_page_t* bpage; + ulint* page_arr; + ulint num_entries; + ulint zip_size; + + zip_size = fil_space_get_zip_size(id); + + if (UNIV_UNLIKELY(zip_size == ULINT_UNDEFINED)) { + /* Somehow, the tablespace does not exist. Nothing to drop. */ + ut_ad(0); + return; + } + + page_arr = ut_malloc(sizeof(ulint) + * BUF_LRU_DROP_SEARCH_HASH_SIZE); + buf_pool_mutex_enter(); + +scan_again: + num_entries = 0; + bpage = UT_LIST_GET_LAST(buf_pool->LRU); + + while (bpage != NULL) { + mutex_t* block_mutex = buf_page_get_mutex(bpage); + buf_page_t* prev_bpage; + + mutex_enter(block_mutex); + prev_bpage = UT_LIST_GET_PREV(LRU, bpage); + + ut_a(buf_page_in_file(bpage)); + + if (buf_page_get_state(bpage) != BUF_BLOCK_FILE_PAGE + || bpage->space != id + || bpage->buf_fix_count > 0 + || bpage->io_fix != BUF_IO_NONE) { + /* We leave the fixed pages as is in this scan. + To be dealt with later in the final scan. */ + mutex_exit(block_mutex); + goto next_page; + } + + if (((buf_block_t*) bpage)->is_hashed) { + + /* Store the offset(i.e.: page_no) in the array + so that we can drop hash index in a batch + later. */ + page_arr[num_entries] = bpage->offset; + mutex_exit(block_mutex); + ut_a(num_entries < BUF_LRU_DROP_SEARCH_HASH_SIZE); + ++num_entries; + + if (num_entries < BUF_LRU_DROP_SEARCH_HASH_SIZE) { + goto next_page; + } + /* Array full. We release the buf_pool_mutex to + obey the latching order. */ + buf_pool_mutex_exit(); + + buf_LRU_drop_page_hash_batch(id, zip_size, page_arr, + num_entries); + num_entries = 0; + buf_pool_mutex_enter(); + } else { + mutex_exit(block_mutex); + } + +next_page: + /* Note that we may have released the buf_pool mutex + above after reading the prev_bpage during processing + of a page_hash_batch (i.e.: when the array was full). + This means that prev_bpage can change in LRU list. + This is OK because this function is a 'best effort' + to drop as many search hash entries as possible and + it does not guarantee that ALL such entries will be + dropped. */ + bpage = prev_bpage; + + /* If, however, bpage has been removed from LRU list + to the free list then we should restart the scan. + bpage->state is protected by buf_pool mutex. */ + if (bpage && !buf_page_in_file(bpage)) { + ut_a(num_entries == 0); + goto scan_again; + } + } + + buf_pool_mutex_exit(); + + /* Drop any remaining batch of search hashed pages. */ + buf_LRU_drop_page_hash_batch(id, zip_size, page_arr, num_entries); + ut_free(page_arr); +} + +/********************************************************************** +Invalidates all pages belonging to a given tablespace when we are deleting +the data file(s) of that tablespace. */ +UNIV_INTERN +void +buf_LRU_invalidate_tablespace( +/*==========================*/ + ulint id) /* in: space id */ +{ + buf_page_t* bpage; + ibool all_freed; + + /* Before we attempt to drop pages one by one we first + attempt to drop page hash index entries in batches to make + it more efficient. The batching attempt is a best effort + attempt and does not guarantee that all pages hash entries + will be dropped. We get rid of remaining page hash entries + one by one below. */ + buf_LRU_drop_page_hash_for_tablespace(id); + +scan_again: + buf_pool_mutex_enter(); + + all_freed = TRUE; + + bpage = UT_LIST_GET_LAST(buf_pool->LRU); + + while (bpage != NULL) { + mutex_t* block_mutex = buf_page_get_mutex(bpage); + buf_page_t* prev_bpage; + + ut_a(buf_page_in_file(bpage)); + + mutex_enter(block_mutex); + prev_bpage = UT_LIST_GET_PREV(LRU, bpage); + + if (buf_page_get_space(bpage) == id) { + if (bpage->buf_fix_count > 0 + || buf_page_get_io_fix(bpage) != BUF_IO_NONE) { + + /* We cannot remove this page during + this scan yet; maybe the system is + currently reading it in, or flushing + the modifications to the file */ + + all_freed = FALSE; + + goto next_page; + } + +#ifdef UNIV_DEBUG + if (buf_debug_prints) { + fprintf(stderr, + "Dropping space %lu page %lu\n", + (ulong) buf_page_get_space(bpage), + (ulong) buf_page_get_page_no(bpage)); + } +#endif + if (buf_page_get_state(bpage) == BUF_BLOCK_FILE_PAGE + && ((buf_block_t*) bpage)->is_hashed) { + ulint page_no; + ulint zip_size; + + buf_pool_mutex_exit(); + + zip_size = buf_page_get_zip_size(bpage); + page_no = buf_page_get_page_no(bpage); + + mutex_exit(block_mutex); + + /* Note that the following call will acquire + an S-latch on the page */ + + btr_search_drop_page_hash_when_freed( + id, zip_size, page_no); + goto scan_again; + } + + if (bpage->oldest_modification != 0) { + + buf_flush_remove(bpage); + } + + /* Remove from the LRU list */ + if (buf_LRU_block_remove_hashed_page(bpage, TRUE) + != BUF_BLOCK_ZIP_FREE) { + buf_LRU_block_free_hashed_page((buf_block_t*) + bpage); + } else { + /* The block_mutex should have been + released by buf_LRU_block_remove_hashed_page() + when it returns BUF_BLOCK_ZIP_FREE. */ + ut_ad(block_mutex == &buf_pool_zip_mutex); + ut_ad(!mutex_own(block_mutex)); + + /* The compressed block descriptor + (bpage) has been deallocated and + block_mutex released. Also, + buf_buddy_free() may have relocated + prev_bpage. Rescan the LRU list. */ + + bpage = UT_LIST_GET_LAST(buf_pool->LRU); + continue; + } + } +next_page: + mutex_exit(block_mutex); + bpage = prev_bpage; + } + + buf_pool_mutex_exit(); + + if (!all_freed) { + os_thread_sleep(20000); + + goto scan_again; + } +} + +/********************************************************************** +Gets the minimum LRU_position field for the blocks in an initial segment +(determined by BUF_LRU_INITIAL_RATIO) of the LRU list. The limit is not +guaranteed to be precise, because the ulint_clock may wrap around. */ +UNIV_INTERN +ulint +buf_LRU_get_recent_limit(void) +/*==========================*/ + /* out: the limit; zero if could not determine it */ +{ + const buf_page_t* bpage; + ulint len; + ulint limit; + + buf_pool_mutex_enter(); + + len = UT_LIST_GET_LEN(buf_pool->LRU); + + if (len < BUF_LRU_OLD_MIN_LEN) { + /* The LRU list is too short to do read-ahead */ + + buf_pool_mutex_exit(); + + return(0); + } + + bpage = UT_LIST_GET_FIRST(buf_pool->LRU); + + limit = buf_page_get_LRU_position(bpage) - len / BUF_LRU_INITIAL_RATIO; + + buf_pool_mutex_exit(); + + return(limit); +} + +/************************************************************************ +Insert a compressed block into buf_pool->zip_clean in the LRU order. */ +UNIV_INTERN +void +buf_LRU_insert_zip_clean( +/*=====================*/ + buf_page_t* bpage) /* in: pointer to the block in question */ +{ + buf_page_t* b; + + ut_ad(buf_pool_mutex_own()); + ut_ad(buf_page_get_state(bpage) == BUF_BLOCK_ZIP_PAGE); + + /* Find the first successor of bpage in the LRU list + that is in the zip_clean list. */ + b = bpage; + do { + b = UT_LIST_GET_NEXT(LRU, b); + } while (b && buf_page_get_state(b) != BUF_BLOCK_ZIP_PAGE); + + /* Insert bpage before b, i.e., after the predecessor of b. */ + if (b) { + b = UT_LIST_GET_PREV(list, b); + } + + if (b) { + UT_LIST_INSERT_AFTER(list, buf_pool->zip_clean, b, bpage); + } else { + UT_LIST_ADD_FIRST(list, buf_pool->zip_clean, bpage); + } +} + +/********************************************************************** +Try to free an uncompressed page of a compressed block from the unzip +LRU list. The compressed page is preserved, and it need not be clean. */ +UNIV_INLINE +ibool +buf_LRU_free_from_unzip_LRU_list( +/*=============================*/ + /* out: TRUE if freed */ + ulint n_iterations) /* in: how many times this has been called + repeatedly without result: a high value means + that we should search farther; we will search + n_iterations / 5 of the unzip_LRU list, + or nothing if n_iterations >= 5 */ +{ + buf_block_t* block; + ulint distance; + + ut_ad(buf_pool_mutex_own()); + + /* Theoratically it should be much easier to find a victim + from unzip_LRU as we can choose even a dirty block (as we'll + be evicting only the uncompressed frame). In a very unlikely + eventuality that we are unable to find a victim from + unzip_LRU, we fall back to the regular LRU list. We do this + if we have done five iterations so far. */ + + if (UNIV_UNLIKELY(n_iterations >= 5) + || !buf_LRU_evict_from_unzip_LRU()) { + + return(FALSE); + } + + distance = 100 + (n_iterations + * UT_LIST_GET_LEN(buf_pool->unzip_LRU)) / 5; + + for (block = UT_LIST_GET_LAST(buf_pool->unzip_LRU); + UNIV_LIKELY(block != NULL) && UNIV_LIKELY(distance > 0); + block = UT_LIST_GET_PREV(unzip_LRU, block), distance--) { + + enum buf_lru_free_block_status freed; + + ut_ad(buf_block_get_state(block) == BUF_BLOCK_FILE_PAGE); + ut_ad(block->in_unzip_LRU_list); + ut_ad(block->page.in_LRU_list); + + mutex_enter(&block->mutex); + freed = buf_LRU_free_block(&block->page, FALSE, NULL); + mutex_exit(&block->mutex); + + switch (freed) { + case BUF_LRU_FREED: + return(TRUE); + + case BUF_LRU_CANNOT_RELOCATE: + /* If we failed to relocate, try + regular LRU eviction. */ + return(FALSE); + + case BUF_LRU_NOT_FREED: + /* The block was buffer-fixed or I/O-fixed. + Keep looking. */ + continue; + } + + /* inappropriate return value from + buf_LRU_free_block() */ + ut_error; + } + + return(FALSE); +} + +/********************************************************************** +Try to free a clean page from the common LRU list. */ +UNIV_INLINE +ibool +buf_LRU_free_from_common_LRU_list( +/*==============================*/ + /* out: TRUE if freed */ + ulint n_iterations) /* in: how many times this has been called + repeatedly without result: a high value means + that we should search farther; if + n_iterations < 10, then we search + n_iterations / 10 * buf_pool->curr_size + pages from the end of the LRU list */ +{ + buf_page_t* bpage; + ulint distance; + + ut_ad(buf_pool_mutex_own()); + + distance = 100 + (n_iterations * buf_pool->curr_size) / 10; + + for (bpage = UT_LIST_GET_LAST(buf_pool->LRU); + UNIV_LIKELY(bpage != NULL) && UNIV_LIKELY(distance > 0); + bpage = UT_LIST_GET_PREV(LRU, bpage), distance--) { + + enum buf_lru_free_block_status freed; + mutex_t* block_mutex + = buf_page_get_mutex(bpage); + + ut_ad(buf_page_in_file(bpage)); + ut_ad(bpage->in_LRU_list); + + mutex_enter(block_mutex); + freed = buf_LRU_free_block(bpage, TRUE, NULL); + mutex_exit(block_mutex); + + switch (freed) { + case BUF_LRU_FREED: + return(TRUE); + + case BUF_LRU_NOT_FREED: + /* The block was dirty, buffer-fixed, or I/O-fixed. + Keep looking. */ + continue; + + case BUF_LRU_CANNOT_RELOCATE: + /* This should never occur, because we + want to discard the compressed page too. */ + break; + } + + /* inappropriate return value from + buf_LRU_free_block() */ + ut_error; + } + + return(FALSE); +} + +/********************************************************************** +Try to free a replaceable block. */ +UNIV_INTERN +ibool +buf_LRU_search_and_free_block( +/*==========================*/ + /* out: TRUE if found and freed */ + ulint n_iterations) /* in: how many times this has been called + repeatedly without result: a high value means + that we should search farther; if + n_iterations < 10, then we search + n_iterations / 10 * buf_pool->curr_size + pages from the end of the LRU list; if + n_iterations < 5, then we will also search + n_iterations / 5 of the unzip_LRU list. */ +{ + ibool freed = FALSE; + + buf_pool_mutex_enter(); + + freed = buf_LRU_free_from_unzip_LRU_list(n_iterations); + + if (!freed) { + freed = buf_LRU_free_from_common_LRU_list(n_iterations); + } + + if (!freed) { + buf_pool->LRU_flush_ended = 0; + } else if (buf_pool->LRU_flush_ended > 0) { + buf_pool->LRU_flush_ended--; + } + + buf_pool_mutex_exit(); + + return(freed); +} + +/********************************************************************** +Tries to remove LRU flushed blocks from the end of the LRU list and put them +to the free list. This is beneficial for the efficiency of the insert buffer +operation, as flushed pages from non-unique non-clustered indexes are here +taken out of the buffer pool, and their inserts redirected to the insert +buffer. Otherwise, the flushed blocks could get modified again before read +operations need new buffer blocks, and the i/o work done in flushing would be +wasted. */ +UNIV_INTERN +void +buf_LRU_try_free_flushed_blocks(void) +/*=================================*/ +{ + buf_pool_mutex_enter(); + + while (buf_pool->LRU_flush_ended > 0) { + + buf_pool_mutex_exit(); + + buf_LRU_search_and_free_block(1); + + buf_pool_mutex_enter(); + } + + buf_pool_mutex_exit(); +} + +/********************************************************************** +Returns TRUE if less than 25 % of the buffer pool is available. This can be +used in heuristics to prevent huge transactions eating up the whole buffer +pool for their locks. */ +UNIV_INTERN +ibool +buf_LRU_buf_pool_running_out(void) +/*==============================*/ + /* out: TRUE if less than 25 % of buffer pool + left */ +{ + ibool ret = FALSE; + + buf_pool_mutex_enter(); + + if (!recv_recovery_on && UT_LIST_GET_LEN(buf_pool->free) + + UT_LIST_GET_LEN(buf_pool->LRU) < buf_pool->curr_size / 4) { + + ret = TRUE; + } + + buf_pool_mutex_exit(); + + return(ret); +} + +/********************************************************************** +Returns a free block from the buf_pool. The block is taken off the +free list. If it is empty, returns NULL. */ +UNIV_INTERN +buf_block_t* +buf_LRU_get_free_only(void) +/*=======================*/ + /* out: a free control block, or NULL + if the buf_block->free list is empty */ +{ + buf_block_t* block; + + ut_ad(buf_pool_mutex_own()); + + block = (buf_block_t*) UT_LIST_GET_FIRST(buf_pool->free); + + if (block) { + ut_ad(block->page.in_free_list); + ut_d(block->page.in_free_list = FALSE); + ut_ad(!block->page.in_flush_list); + ut_ad(!block->page.in_LRU_list); + ut_a(!buf_page_in_file(&block->page)); + UT_LIST_REMOVE(list, buf_pool->free, (&block->page)); + + mutex_enter(&block->mutex); + + buf_block_set_state(block, BUF_BLOCK_READY_FOR_USE); + UNIV_MEM_ALLOC(block->frame, UNIV_PAGE_SIZE); + + mutex_exit(&block->mutex); + } + + return(block); +} + +/********************************************************************** +Returns a free block from the buf_pool. The block is taken off the +free list. If it is empty, blocks are moved from the end of the +LRU list to the free list. */ +UNIV_INTERN +buf_block_t* +buf_LRU_get_free_block( +/*===================*/ + /* out: the free control block, + in state BUF_BLOCK_READY_FOR_USE */ + ulint zip_size) /* in: compressed page size in bytes, + or 0 if uncompressed tablespace */ +{ + buf_block_t* block = NULL; + ibool freed; + ulint n_iterations = 1; + ibool mon_value_was = FALSE; + ibool started_monitor = FALSE; +loop: + buf_pool_mutex_enter(); + + if (!recv_recovery_on && UT_LIST_GET_LEN(buf_pool->free) + + UT_LIST_GET_LEN(buf_pool->LRU) < buf_pool->curr_size / 20) { + ut_print_timestamp(stderr); + + fprintf(stderr, + " InnoDB: ERROR: over 95 percent of the buffer pool" + " is occupied by\n" + "InnoDB: lock heaps or the adaptive hash index!" + " Check that your\n" + "InnoDB: transactions do not set too many row locks.\n" + "InnoDB: Your buffer pool size is %lu MB." + " Maybe you should make\n" + "InnoDB: the buffer pool bigger?\n" + "InnoDB: We intentionally generate a seg fault" + " to print a stack trace\n" + "InnoDB: on Linux!\n", + (ulong) (buf_pool->curr_size + / (1024 * 1024 / UNIV_PAGE_SIZE))); + + ut_error; + + } else if (!recv_recovery_on + && (UT_LIST_GET_LEN(buf_pool->free) + + UT_LIST_GET_LEN(buf_pool->LRU)) + < buf_pool->curr_size / 3) { + + if (!buf_lru_switched_on_innodb_mon) { + + /* Over 67 % of the buffer pool is occupied by lock + heaps or the adaptive hash index. This may be a memory + leak! */ + + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: WARNING: over 67 percent of" + " the buffer pool is occupied by\n" + "InnoDB: lock heaps or the adaptive" + " hash index! Check that your\n" + "InnoDB: transactions do not set too many" + " row locks.\n" + "InnoDB: Your buffer pool size is %lu MB." + " Maybe you should make\n" + "InnoDB: the buffer pool bigger?\n" + "InnoDB: Starting the InnoDB Monitor to print" + " diagnostics, including\n" + "InnoDB: lock heap and hash index sizes.\n", + (ulong) (buf_pool->curr_size + / (1024 * 1024 / UNIV_PAGE_SIZE))); + + buf_lru_switched_on_innodb_mon = TRUE; + srv_print_innodb_monitor = TRUE; + os_event_set(srv_lock_timeout_thread_event); + } + } else if (buf_lru_switched_on_innodb_mon) { + + /* Switch off the InnoDB Monitor; this is a simple way + to stop the monitor if the situation becomes less urgent, + but may also surprise users if the user also switched on the + monitor! */ + + buf_lru_switched_on_innodb_mon = FALSE; + srv_print_innodb_monitor = FALSE; + } + + /* If there is a block in the free list, take it */ + block = buf_LRU_get_free_only(); + if (block) { + +#ifdef UNIV_DEBUG + block->page.zip.m_start = +#endif /* UNIV_DEBUG */ + block->page.zip.m_end = + block->page.zip.m_nonempty = + block->page.zip.n_blobs = 0; + + if (UNIV_UNLIKELY(zip_size)) { + ibool lru; + page_zip_set_size(&block->page.zip, zip_size); + block->page.zip.data = buf_buddy_alloc(zip_size, &lru); + UNIV_MEM_DESC(block->page.zip.data, zip_size, block); + } else { + page_zip_set_size(&block->page.zip, 0); + block->page.zip.data = NULL; + } + + buf_pool_mutex_exit(); + + if (started_monitor) { + srv_print_innodb_monitor = mon_value_was; + } + + return(block); + } + + /* If no block was in the free list, search from the end of the LRU + list and try to free a block there */ + + buf_pool_mutex_exit(); + + freed = buf_LRU_search_and_free_block(n_iterations); + + if (freed > 0) { + goto loop; + } + + if (n_iterations > 30) { + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: Warning: difficult to find free blocks in\n" + "InnoDB: the buffer pool (%lu search iterations)!" + " Consider\n" + "InnoDB: increasing the buffer pool size.\n" + "InnoDB: It is also possible that" + " in your Unix version\n" + "InnoDB: fsync is very slow, or" + " completely frozen inside\n" + "InnoDB: the OS kernel. Then upgrading to" + " a newer version\n" + "InnoDB: of your operating system may help." + " Look at the\n" + "InnoDB: number of fsyncs in diagnostic info below.\n" + "InnoDB: Pending flushes (fsync) log: %lu;" + " buffer pool: %lu\n" + "InnoDB: %lu OS file reads, %lu OS file writes," + " %lu OS fsyncs\n" + "InnoDB: Starting InnoDB Monitor to print further\n" + "InnoDB: diagnostics to the standard output.\n", + (ulong) n_iterations, + (ulong) fil_n_pending_log_flushes, + (ulong) fil_n_pending_tablespace_flushes, + (ulong) os_n_file_reads, (ulong) os_n_file_writes, + (ulong) os_n_fsyncs); + + mon_value_was = srv_print_innodb_monitor; + started_monitor = TRUE; + srv_print_innodb_monitor = TRUE; + os_event_set(srv_lock_timeout_thread_event); + } + + /* No free block was found: try to flush the LRU list */ + + buf_flush_free_margin(TRUE); + ++srv_buf_pool_wait_free; + + os_aio_simulated_wake_handler_threads(); + + buf_pool_mutex_enter(); + + if (buf_pool->LRU_flush_ended > 0) { + /* We have written pages in an LRU flush. To make the insert + buffer more efficient, we try to move these pages to the free + list. */ + + buf_pool_mutex_exit(); + + buf_LRU_try_free_flushed_blocks(); + } else { + buf_pool_mutex_exit(); + } + + if (n_iterations > 10) { + + os_thread_sleep(500000); + } + + n_iterations++; + + goto loop; +} + +/*********************************************************************** +Moves the LRU_old pointer so that the length of the old blocks list +is inside the allowed limits. */ +UNIV_INLINE +void +buf_LRU_old_adjust_len(void) +/*========================*/ +{ + ulint old_len; + ulint new_len; + + ut_a(buf_pool->LRU_old); + ut_ad(buf_pool_mutex_own()); +#if 3 * (BUF_LRU_OLD_MIN_LEN / 8) <= BUF_LRU_OLD_TOLERANCE + 5 +# error "3 * (BUF_LRU_OLD_MIN_LEN / 8) <= BUF_LRU_OLD_TOLERANCE + 5" +#endif +#ifdef UNIV_LRU_DEBUG + /* buf_pool->LRU_old must be the first item in the LRU list + whose "old" flag is set. */ + ut_a(buf_pool->LRU_old->old); + ut_a(!UT_LIST_GET_PREV(LRU, buf_pool->LRU_old) + || !UT_LIST_GET_PREV(LRU, buf_pool->LRU_old)->old); + ut_a(!UT_LIST_GET_NEXT(LRU, buf_pool->LRU_old) + || UT_LIST_GET_NEXT(LRU, buf_pool->LRU_old)->old); +#endif /* UNIV_LRU_DEBUG */ + + for (;;) { + old_len = buf_pool->LRU_old_len; + new_len = 3 * (UT_LIST_GET_LEN(buf_pool->LRU) / 8); + + ut_ad(buf_pool->LRU_old->in_LRU_list); + ut_a(buf_pool->LRU_old); +#ifdef UNIV_LRU_DEBUG + ut_a(buf_pool->LRU_old->old); +#endif /* UNIV_LRU_DEBUG */ + + /* Update the LRU_old pointer if necessary */ + + if (old_len < new_len - BUF_LRU_OLD_TOLERANCE) { + + buf_pool->LRU_old = UT_LIST_GET_PREV( + LRU, buf_pool->LRU_old); +#ifdef UNIV_LRU_DEBUG + ut_a(!buf_pool->LRU_old->old); +#endif /* UNIV_LRU_DEBUG */ + buf_page_set_old(buf_pool->LRU_old, TRUE); + buf_pool->LRU_old_len++; + + } else if (old_len > new_len + BUF_LRU_OLD_TOLERANCE) { + + buf_page_set_old(buf_pool->LRU_old, FALSE); + buf_pool->LRU_old = UT_LIST_GET_NEXT( + LRU, buf_pool->LRU_old); + buf_pool->LRU_old_len--; + } else { + return; + } + } +} + +/*********************************************************************** +Initializes the old blocks pointer in the LRU list. This function should be +called when the LRU list grows to BUF_LRU_OLD_MIN_LEN length. */ +static +void +buf_LRU_old_init(void) +/*==================*/ +{ + buf_page_t* bpage; + + ut_ad(buf_pool_mutex_own()); + ut_a(UT_LIST_GET_LEN(buf_pool->LRU) == BUF_LRU_OLD_MIN_LEN); + + /* We first initialize all blocks in the LRU list as old and then use + the adjust function to move the LRU_old pointer to the right + position */ + + bpage = UT_LIST_GET_FIRST(buf_pool->LRU); + + while (bpage != NULL) { + ut_ad(bpage->in_LRU_list); + buf_page_set_old(bpage, TRUE); + bpage = UT_LIST_GET_NEXT(LRU, bpage); + } + + buf_pool->LRU_old = UT_LIST_GET_FIRST(buf_pool->LRU); + buf_pool->LRU_old_len = UT_LIST_GET_LEN(buf_pool->LRU); + + buf_LRU_old_adjust_len(); +} + +/********************************************************************** +Remove a block from the unzip_LRU list if it belonged to the list. */ +static +void +buf_unzip_LRU_remove_block_if_needed( +/*=================================*/ + buf_page_t* bpage) /* in/out: control block */ +{ + ut_ad(buf_pool); + ut_ad(bpage); + ut_ad(buf_page_in_file(bpage)); + ut_ad(buf_pool_mutex_own()); + + if (buf_page_belongs_to_unzip_LRU(bpage)) { + buf_block_t* block = (buf_block_t*) bpage; + + ut_ad(block->in_unzip_LRU_list); + ut_d(block->in_unzip_LRU_list = FALSE); + + UT_LIST_REMOVE(unzip_LRU, buf_pool->unzip_LRU, block); + } +} + +/********************************************************************** +Removes a block from the LRU list. */ +UNIV_INLINE +void +buf_LRU_remove_block( +/*=================*/ + buf_page_t* bpage) /* in: control block */ +{ + ut_ad(buf_pool); + ut_ad(bpage); + ut_ad(buf_pool_mutex_own()); + + ut_a(buf_page_in_file(bpage)); + + ut_ad(bpage->in_LRU_list); + + /* If the LRU_old pointer is defined and points to just this block, + move it backward one step */ + + if (UNIV_UNLIKELY(bpage == buf_pool->LRU_old)) { + + /* Below: the previous block is guaranteed to exist, because + the LRU_old pointer is only allowed to differ by the + tolerance value from strict 3/8 of the LRU list length. */ + + buf_pool->LRU_old = UT_LIST_GET_PREV(LRU, bpage); + ut_a(buf_pool->LRU_old); +#ifdef UNIV_LRU_DEBUG + ut_a(!buf_pool->LRU_old->old); +#endif /* UNIV_LRU_DEBUG */ + buf_page_set_old(buf_pool->LRU_old, TRUE); + + buf_pool->LRU_old_len++; + } + + /* Remove the block from the LRU list */ + UT_LIST_REMOVE(LRU, buf_pool->LRU, bpage); + bpage->in_LRU_list = FALSE; + + buf_unzip_LRU_remove_block_if_needed(bpage); + + /* If the LRU list is so short that LRU_old not defined, return */ + if (UT_LIST_GET_LEN(buf_pool->LRU) < BUF_LRU_OLD_MIN_LEN) { + + buf_pool->LRU_old = NULL; + + return; + } + + ut_ad(buf_pool->LRU_old); + + /* Update the LRU_old_len field if necessary */ + if (buf_page_is_old(bpage)) { + + buf_pool->LRU_old_len--; + } + + /* Adjust the length of the old block list if necessary */ + buf_LRU_old_adjust_len(); +} + +/********************************************************************** +Adds a block to the LRU list of decompressed zip pages. */ +UNIV_INTERN +void +buf_unzip_LRU_add_block( +/*====================*/ + buf_block_t* block, /* in: control block */ + ibool old) /* in: TRUE if should be put to the end + of the list, else put to the start */ +{ + ut_ad(buf_pool); + ut_ad(block); + ut_ad(buf_pool_mutex_own()); + + ut_a(buf_page_belongs_to_unzip_LRU(&block->page)); + + ut_ad(!block->in_unzip_LRU_list); + ut_d(block->in_unzip_LRU_list = TRUE); + + if (old) { + UT_LIST_ADD_LAST(unzip_LRU, buf_pool->unzip_LRU, block); + } else { + UT_LIST_ADD_FIRST(unzip_LRU, buf_pool->unzip_LRU, block); + } +} + +/********************************************************************** +Adds a block to the LRU list end. */ +UNIV_INLINE +void +buf_LRU_add_block_to_end_low( +/*=========================*/ + buf_page_t* bpage) /* in: control block */ +{ + buf_page_t* last_bpage; + + ut_ad(buf_pool); + ut_ad(bpage); + ut_ad(buf_pool_mutex_own()); + + ut_a(buf_page_in_file(bpage)); + + last_bpage = UT_LIST_GET_LAST(buf_pool->LRU); + + if (last_bpage) { + bpage->LRU_position = last_bpage->LRU_position; + } else { + bpage->LRU_position = buf_pool_clock_tic(); + } + + ut_ad(!bpage->in_LRU_list); + UT_LIST_ADD_LAST(LRU, buf_pool->LRU, bpage); + bpage->in_LRU_list = TRUE; + + buf_page_set_old(bpage, TRUE); + + if (UT_LIST_GET_LEN(buf_pool->LRU) >= BUF_LRU_OLD_MIN_LEN) { + + buf_pool->LRU_old_len++; + } + + if (UT_LIST_GET_LEN(buf_pool->LRU) > BUF_LRU_OLD_MIN_LEN) { + + ut_ad(buf_pool->LRU_old); + + /* Adjust the length of the old block list if necessary */ + + buf_LRU_old_adjust_len(); + + } else if (UT_LIST_GET_LEN(buf_pool->LRU) == BUF_LRU_OLD_MIN_LEN) { + + /* The LRU list is now long enough for LRU_old to become + defined: init it */ + + buf_LRU_old_init(); + } + + /* If this is a zipped block with decompressed frame as well + then put it on the unzip_LRU list */ + if (buf_page_belongs_to_unzip_LRU(bpage)) { + buf_unzip_LRU_add_block((buf_block_t*) bpage, TRUE); + } +} + +/********************************************************************** +Adds a block to the LRU list. */ +UNIV_INLINE +void +buf_LRU_add_block_low( +/*==================*/ + buf_page_t* bpage, /* in: control block */ + ibool old) /* in: TRUE if should be put to the old blocks + in the LRU list, else put to the start; if the + LRU list is very short, the block is added to + the start, regardless of this parameter */ +{ + ut_ad(buf_pool); + ut_ad(bpage); + ut_ad(buf_pool_mutex_own()); + + ut_a(buf_page_in_file(bpage)); + ut_ad(!bpage->in_LRU_list); + + if (!old || (UT_LIST_GET_LEN(buf_pool->LRU) < BUF_LRU_OLD_MIN_LEN)) { + + UT_LIST_ADD_FIRST(LRU, buf_pool->LRU, bpage); + + bpage->LRU_position = buf_pool_clock_tic(); + bpage->freed_page_clock = buf_pool->freed_page_clock; + } else { +#ifdef UNIV_LRU_DEBUG + /* buf_pool->LRU_old must be the first item in the LRU list + whose "old" flag is set. */ + ut_a(buf_pool->LRU_old->old); + ut_a(!UT_LIST_GET_PREV(LRU, buf_pool->LRU_old) + || !UT_LIST_GET_PREV(LRU, buf_pool->LRU_old)->old); + ut_a(!UT_LIST_GET_NEXT(LRU, buf_pool->LRU_old) + || UT_LIST_GET_NEXT(LRU, buf_pool->LRU_old)->old); +#endif /* UNIV_LRU_DEBUG */ + UT_LIST_INSERT_AFTER(LRU, buf_pool->LRU, buf_pool->LRU_old, + bpage); + buf_pool->LRU_old_len++; + + /* We copy the LRU position field of the previous block + to the new block */ + + bpage->LRU_position = (buf_pool->LRU_old)->LRU_position; + } + + bpage->in_LRU_list = TRUE; + + buf_page_set_old(bpage, old); + + if (UT_LIST_GET_LEN(buf_pool->LRU) > BUF_LRU_OLD_MIN_LEN) { + + ut_ad(buf_pool->LRU_old); + + /* Adjust the length of the old block list if necessary */ + + buf_LRU_old_adjust_len(); + + } else if (UT_LIST_GET_LEN(buf_pool->LRU) == BUF_LRU_OLD_MIN_LEN) { + + /* The LRU list is now long enough for LRU_old to become + defined: init it */ + + buf_LRU_old_init(); + } + + /* If this is a zipped block with decompressed frame as well + then put it on the unzip_LRU list */ + if (buf_page_belongs_to_unzip_LRU(bpage)) { + buf_unzip_LRU_add_block((buf_block_t*) bpage, old); + } +} + +/********************************************************************** +Adds a block to the LRU list. */ +UNIV_INTERN +void +buf_LRU_add_block( +/*==============*/ + buf_page_t* bpage, /* in: control block */ + ibool old) /* in: TRUE if should be put to the old + blocks in the LRU list, else put to the start; + if the LRU list is very short, the block is + added to the start, regardless of this + parameter */ +{ + buf_LRU_add_block_low(bpage, old); +} + +/********************************************************************** +Moves a block to the start of the LRU list. */ +UNIV_INTERN +void +buf_LRU_make_block_young( +/*=====================*/ + buf_page_t* bpage) /* in: control block */ +{ + buf_LRU_remove_block(bpage); + buf_LRU_add_block_low(bpage, FALSE); +} + +/********************************************************************** +Moves a block to the end of the LRU list. */ +UNIV_INTERN +void +buf_LRU_make_block_old( +/*===================*/ + buf_page_t* bpage) /* in: control block */ +{ + buf_LRU_remove_block(bpage); + buf_LRU_add_block_to_end_low(bpage); +} + +/********************************************************************** +Try to free a block. If bpage is a descriptor of a compressed-only +page, the descriptor object will be freed as well. + +NOTE: If this function returns BUF_LRU_FREED, it will not temporarily +release buf_pool_mutex. Furthermore, the page frame will no longer be +accessible via bpage. + +The caller must hold buf_pool_mutex and buf_page_get_mutex(bpage) and +release these two mutexes after the call. No other +buf_page_get_mutex() may be held when calling this function. */ +UNIV_INTERN +enum buf_lru_free_block_status +buf_LRU_free_block( +/*===============*/ + /* out: BUF_LRU_FREED if freed, + BUF_LRU_CANNOT_RELOCATE or + BUF_LRU_NOT_FREED otherwise. */ + buf_page_t* bpage, /* in: block to be freed */ + ibool zip, /* in: TRUE if should remove also the + compressed page of an uncompressed page */ + ibool* buf_pool_mutex_released) + /* in: pointer to a variable that will + be assigned TRUE if buf_pool_mutex + was temporarily released, or NULL */ +{ + buf_page_t* b = NULL; + mutex_t* block_mutex = buf_page_get_mutex(bpage); + + ut_ad(buf_pool_mutex_own()); + ut_ad(mutex_own(block_mutex)); + ut_ad(buf_page_in_file(bpage)); + ut_ad(bpage->in_LRU_list); + ut_ad(!bpage->in_flush_list == !bpage->oldest_modification); + UNIV_MEM_ASSERT_RW(bpage, sizeof *bpage); + + if (!buf_page_can_relocate(bpage)) { + + /* Do not free buffer-fixed or I/O-fixed blocks. */ + return(BUF_LRU_NOT_FREED); + } + +#ifdef UNIV_IBUF_COUNT_DEBUG + ut_a(ibuf_count_get(bpage->space, bpage->offset) == 0); +#endif /* UNIV_IBUF_COUNT_DEBUG */ + + if (zip || !bpage->zip.data) { + /* This would completely free the block. */ + /* Do not completely free dirty blocks. */ + + if (bpage->oldest_modification) { + return(BUF_LRU_NOT_FREED); + } + } else if (bpage->oldest_modification) { + /* Do not completely free dirty blocks. */ + + if (buf_page_get_state(bpage) != BUF_BLOCK_FILE_PAGE) { + ut_ad(buf_page_get_state(bpage) + == BUF_BLOCK_ZIP_DIRTY); + return(BUF_LRU_NOT_FREED); + } + + goto alloc; + } else if (buf_page_get_state(bpage) == BUF_BLOCK_FILE_PAGE) { + /* Allocate the control block for the compressed page. + If it cannot be allocated (without freeing a block + from the LRU list), refuse to free bpage. */ +alloc: + buf_pool_mutex_exit_forbid(); + b = buf_buddy_alloc(sizeof *b, NULL); + buf_pool_mutex_exit_allow(); + + if (UNIV_UNLIKELY(!b)) { + return(BUF_LRU_CANNOT_RELOCATE); + } + + memcpy(b, bpage, sizeof *b); + } + +#ifdef UNIV_DEBUG + if (buf_debug_prints) { + fprintf(stderr, "Putting space %lu page %lu to free list\n", + (ulong) buf_page_get_space(bpage), + (ulong) buf_page_get_page_no(bpage)); + } +#endif /* UNIV_DEBUG */ + + if (buf_LRU_block_remove_hashed_page(bpage, zip) + != BUF_BLOCK_ZIP_FREE) { + ut_a(bpage->buf_fix_count == 0); + + if (b) { + buf_page_t* prev_b = UT_LIST_GET_PREV(LRU, b); + const ulint fold = buf_page_address_fold( + bpage->space, bpage->offset); + + ut_a(!buf_page_hash_get(bpage->space, bpage->offset)); + + b->state = b->oldest_modification + ? BUF_BLOCK_ZIP_DIRTY + : BUF_BLOCK_ZIP_PAGE; + UNIV_MEM_DESC(b->zip.data, + page_zip_get_size(&b->zip), b); + + /* The fields in_page_hash and in_LRU_list of + the to-be-freed block descriptor should have + been cleared in + buf_LRU_block_remove_hashed_page(), which + invokes buf_LRU_remove_block(). */ + ut_ad(!bpage->in_page_hash); + ut_ad(!bpage->in_LRU_list); + /* bpage->state was BUF_BLOCK_FILE_PAGE because + b != NULL. The type cast below is thus valid. */ + ut_ad(!((buf_block_t*) bpage)->in_unzip_LRU_list); + + /* The fields of bpage were copied to b before + buf_LRU_block_remove_hashed_page() was invoked. */ + ut_ad(!b->in_zip_hash); + ut_ad(b->in_page_hash); + ut_ad(b->in_LRU_list); + + HASH_INSERT(buf_page_t, hash, + buf_pool->page_hash, fold, b); + + /* Insert b where bpage was in the LRU list. */ + if (UNIV_LIKELY(prev_b != NULL)) { + ulint lru_len; + + ut_ad(prev_b->in_LRU_list); + ut_ad(buf_page_in_file(prev_b)); + UNIV_MEM_ASSERT_RW(prev_b, sizeof *prev_b); + + UT_LIST_INSERT_AFTER(LRU, buf_pool->LRU, + prev_b, b); + + if (buf_page_is_old(b)) { + buf_pool->LRU_old_len++; + if (UNIV_UNLIKELY + (buf_pool->LRU_old + == UT_LIST_GET_NEXT(LRU, b))) { + + buf_pool->LRU_old = b; + } +#ifdef UNIV_LRU_DEBUG + ut_a(prev_b->old + || !UT_LIST_GET_NEXT(LRU, b) + || UT_LIST_GET_NEXT(LRU, b)->old); + } else { + ut_a(!prev_b->old + || !UT_LIST_GET_NEXT(LRU, b) + || !UT_LIST_GET_NEXT(LRU, b)->old); +#endif /* UNIV_LRU_DEBUG */ + } + + lru_len = UT_LIST_GET_LEN(buf_pool->LRU); + + if (lru_len > BUF_LRU_OLD_MIN_LEN) { + ut_ad(buf_pool->LRU_old); + /* Adjust the length of the + old block list if necessary */ + buf_LRU_old_adjust_len(); + } else if (lru_len == BUF_LRU_OLD_MIN_LEN) { + /* The LRU list is now long + enough for LRU_old to become + defined: init it */ + buf_LRU_old_init(); + } + } else { + b->in_LRU_list = FALSE; + buf_LRU_add_block_low(b, buf_page_is_old(b)); + } + + if (b->state == BUF_BLOCK_ZIP_PAGE) { + buf_LRU_insert_zip_clean(b); + } else { + buf_page_t* prev; + + ut_ad(b->in_flush_list); + ut_d(bpage->in_flush_list = FALSE); + + prev = UT_LIST_GET_PREV(list, b); + UT_LIST_REMOVE(list, buf_pool->flush_list, b); + + if (prev) { + ut_ad(prev->in_flush_list); + UT_LIST_INSERT_AFTER( + list, + buf_pool->flush_list, + prev, b); + } else { + UT_LIST_ADD_FIRST( + list, + buf_pool->flush_list, + b); + } + } + + bpage->zip.data = NULL; + page_zip_set_size(&bpage->zip, 0); + + /* Prevent buf_page_get_gen() from + decompressing the block while we release + buf_pool_mutex and block_mutex. */ + b->buf_fix_count++; + b->io_fix = BUF_IO_READ; + } + + if (buf_pool_mutex_released) { + *buf_pool_mutex_released = TRUE; + } + + buf_pool_mutex_exit(); + mutex_exit(block_mutex); + + /* Remove possible adaptive hash index on the page. + The page was declared uninitialized by + buf_LRU_block_remove_hashed_page(). We need to flag + the contents of the page valid (which it still is) in + order to avoid bogus Valgrind warnings.*/ + + UNIV_MEM_VALID(((buf_block_t*) bpage)->frame, + UNIV_PAGE_SIZE); + btr_search_drop_page_hash_index((buf_block_t*) bpage); + UNIV_MEM_INVALID(((buf_block_t*) bpage)->frame, + UNIV_PAGE_SIZE); + + if (b) { + /* Compute and stamp the compressed page + checksum while not holding any mutex. The + block is already half-freed + (BUF_BLOCK_REMOVE_HASH) and removed from + buf_pool->page_hash, thus inaccessible by any + other thread. */ + + mach_write_to_4( + b->zip.data + FIL_PAGE_SPACE_OR_CHKSUM, + UNIV_LIKELY(srv_use_checksums) + ? page_zip_calc_checksum( + b->zip.data, + page_zip_get_size(&b->zip)) + : BUF_NO_CHECKSUM_MAGIC); + } + + buf_pool_mutex_enter(); + mutex_enter(block_mutex); + + if (b) { + mutex_enter(&buf_pool_zip_mutex); + b->buf_fix_count--; + buf_page_set_io_fix(b, BUF_IO_NONE); + mutex_exit(&buf_pool_zip_mutex); + } + + buf_LRU_block_free_hashed_page((buf_block_t*) bpage); + } else { + /* The block_mutex should have been released by + buf_LRU_block_remove_hashed_page() when it returns + BUF_BLOCK_ZIP_FREE. */ + ut_ad(block_mutex == &buf_pool_zip_mutex); + mutex_enter(block_mutex); + } + + return(BUF_LRU_FREED); +} + +/********************************************************************** +Puts a block back to the free list. */ +UNIV_INTERN +void +buf_LRU_block_free_non_file_page( +/*=============================*/ + buf_block_t* block) /* in: block, must not contain a file page */ +{ + void* data; + + ut_ad(block); + ut_ad(buf_pool_mutex_own()); + ut_ad(mutex_own(&block->mutex)); + + switch (buf_block_get_state(block)) { + case BUF_BLOCK_MEMORY: + case BUF_BLOCK_READY_FOR_USE: + break; + default: + ut_error; + } + +#if defined UNIV_AHI_DEBUG || defined UNIV_DEBUG + ut_a(block->n_pointers == 0); +#endif /* UNIV_AHI_DEBUG || UNIV_DEBUG */ + ut_ad(!block->page.in_free_list); + ut_ad(!block->page.in_flush_list); + ut_ad(!block->page.in_LRU_list); + + buf_block_set_state(block, BUF_BLOCK_NOT_USED); + + UNIV_MEM_ALLOC(block->frame, UNIV_PAGE_SIZE); +#ifdef UNIV_DEBUG + /* Wipe contents of page to reveal possible stale pointers to it */ + memset(block->frame, '\0', UNIV_PAGE_SIZE); +#else + /* Wipe page_no and space_id */ + memset(block->frame + FIL_PAGE_OFFSET, 0xfe, 4); + memset(block->frame + FIL_PAGE_ARCH_LOG_NO_OR_SPACE_ID, 0xfe, 4); +#endif + data = block->page.zip.data; + + if (data) { + block->page.zip.data = NULL; + mutex_exit(&block->mutex); + buf_pool_mutex_exit_forbid(); + buf_buddy_free(data, page_zip_get_size(&block->page.zip)); + buf_pool_mutex_exit_allow(); + mutex_enter(&block->mutex); + page_zip_set_size(&block->page.zip, 0); + } + + UT_LIST_ADD_FIRST(list, buf_pool->free, (&block->page)); + ut_d(block->page.in_free_list = TRUE); + + UNIV_MEM_ASSERT_AND_FREE(block->frame, UNIV_PAGE_SIZE); +} + +/********************************************************************** +Takes a block out of the LRU list and page hash table. +If the block is compressed-only (BUF_BLOCK_ZIP_PAGE), +the object will be freed and buf_pool_zip_mutex will be released. + +If a compressed page or a compressed-only block descriptor is freed, +other compressed pages or compressed-only block descriptors may be +relocated. */ +static +enum buf_page_state +buf_LRU_block_remove_hashed_page( +/*=============================*/ + /* out: the new state of the block + (BUF_BLOCK_ZIP_FREE if the state was + BUF_BLOCK_ZIP_PAGE, or BUF_BLOCK_REMOVE_HASH + otherwise) */ + buf_page_t* bpage, /* in: block, must contain a file page and + be in a state where it can be freed; there + may or may not be a hash index to the page */ + ibool zip) /* in: TRUE if should remove also the + compressed page of an uncompressed page */ +{ + const buf_page_t* hashed_bpage; + ut_ad(bpage); + ut_ad(buf_pool_mutex_own()); + ut_ad(mutex_own(buf_page_get_mutex(bpage))); + + ut_a(buf_page_get_io_fix(bpage) == BUF_IO_NONE); + ut_a(bpage->buf_fix_count == 0); + + UNIV_MEM_ASSERT_RW(bpage, sizeof *bpage); + + buf_LRU_remove_block(bpage); + + buf_pool->freed_page_clock += 1; + + switch (buf_page_get_state(bpage)) { + case BUF_BLOCK_FILE_PAGE: + UNIV_MEM_ASSERT_W(bpage, sizeof(buf_block_t)); + UNIV_MEM_ASSERT_W(((buf_block_t*) bpage)->frame, + UNIV_PAGE_SIZE); + buf_block_modify_clock_inc((buf_block_t*) bpage); + if (bpage->zip.data) { + const page_t* page = ((buf_block_t*) bpage)->frame; + const ulint zip_size + = page_zip_get_size(&bpage->zip); + + ut_a(!zip || bpage->oldest_modification == 0); + + switch (UNIV_EXPECT(fil_page_get_type(page), + FIL_PAGE_INDEX)) { + case FIL_PAGE_TYPE_ALLOCATED: + case FIL_PAGE_INODE: + case FIL_PAGE_IBUF_BITMAP: + case FIL_PAGE_TYPE_FSP_HDR: + case FIL_PAGE_TYPE_XDES: + /* These are essentially uncompressed pages. */ + if (!zip) { + /* InnoDB writes the data to the + uncompressed page frame. Copy it + to the compressed page, which will + be preserved. */ + memcpy(bpage->zip.data, page, + zip_size); + } + break; + case FIL_PAGE_TYPE_ZBLOB: + case FIL_PAGE_TYPE_ZBLOB2: + break; + case FIL_PAGE_INDEX: +#ifdef UNIV_ZIP_DEBUG + ut_a(page_zip_validate(&bpage->zip, page)); +#endif /* UNIV_ZIP_DEBUG */ + break; + default: + ut_print_timestamp(stderr); + fputs(" InnoDB: ERROR: The compressed page" + " to be evicted seems corrupt:", stderr); + ut_print_buf(stderr, page, zip_size); + fputs("\nInnoDB: Possibly older version" + " of the page:", stderr); + ut_print_buf(stderr, bpage->zip.data, + zip_size); + putc('\n', stderr); + ut_error; + } + + break; + } + /* fall through */ + case BUF_BLOCK_ZIP_PAGE: + ut_a(bpage->oldest_modification == 0); + UNIV_MEM_ASSERT_W(bpage->zip.data, + page_zip_get_size(&bpage->zip)); + break; + case BUF_BLOCK_ZIP_FREE: + case BUF_BLOCK_ZIP_DIRTY: + case BUF_BLOCK_NOT_USED: + case BUF_BLOCK_READY_FOR_USE: + case BUF_BLOCK_MEMORY: + case BUF_BLOCK_REMOVE_HASH: + ut_error; + break; + } + + hashed_bpage = buf_page_hash_get(bpage->space, bpage->offset); + + if (UNIV_UNLIKELY(bpage != hashed_bpage)) { + fprintf(stderr, + "InnoDB: Error: page %lu %lu not found" + " in the hash table\n", + (ulong) bpage->space, + (ulong) bpage->offset); + if (hashed_bpage) { + fprintf(stderr, + "InnoDB: In hash table we find block" + " %p of %lu %lu which is not %p\n", + (const void*) hashed_bpage, + (ulong) hashed_bpage->space, + (ulong) hashed_bpage->offset, + (const void*) bpage); + } + +#if defined UNIV_DEBUG || defined UNIV_BUF_DEBUG + mutex_exit(buf_page_get_mutex(bpage)); + buf_pool_mutex_exit(); + buf_print(); + buf_LRU_print(); + buf_validate(); + buf_LRU_validate(); +#endif /* UNIV_DEBUG || UNIV_BUF_DEBUG */ + ut_error; + } + + ut_ad(!bpage->in_zip_hash); + ut_ad(bpage->in_page_hash); + ut_d(bpage->in_page_hash = FALSE); + HASH_DELETE(buf_page_t, hash, buf_pool->page_hash, + buf_page_address_fold(bpage->space, bpage->offset), + bpage); + switch (buf_page_get_state(bpage)) { + case BUF_BLOCK_ZIP_PAGE: + ut_ad(!bpage->in_free_list); + ut_ad(!bpage->in_flush_list); + ut_ad(!bpage->in_LRU_list); + ut_a(bpage->zip.data); + ut_a(buf_page_get_zip_size(bpage)); + + UT_LIST_REMOVE(list, buf_pool->zip_clean, bpage); + + mutex_exit(&buf_pool_zip_mutex); + buf_pool_mutex_exit_forbid(); + buf_buddy_free(bpage->zip.data, + page_zip_get_size(&bpage->zip)); + buf_buddy_free(bpage, sizeof(*bpage)); + buf_pool_mutex_exit_allow(); + UNIV_MEM_UNDESC(bpage); + return(BUF_BLOCK_ZIP_FREE); + + case BUF_BLOCK_FILE_PAGE: + memset(((buf_block_t*) bpage)->frame + + FIL_PAGE_OFFSET, 0xff, 4); + memset(((buf_block_t*) bpage)->frame + + FIL_PAGE_ARCH_LOG_NO_OR_SPACE_ID, 0xff, 4); + UNIV_MEM_INVALID(((buf_block_t*) bpage)->frame, + UNIV_PAGE_SIZE); + buf_page_set_state(bpage, BUF_BLOCK_REMOVE_HASH); + + if (zip && bpage->zip.data) { + /* Free the compressed page. */ + void* data = bpage->zip.data; + bpage->zip.data = NULL; + + mutex_exit(&((buf_block_t*) bpage)->mutex); + buf_pool_mutex_exit_forbid(); + buf_buddy_free(data, page_zip_get_size(&bpage->zip)); + buf_pool_mutex_exit_allow(); + mutex_enter(&((buf_block_t*) bpage)->mutex); + page_zip_set_size(&bpage->zip, 0); + } + + return(BUF_BLOCK_REMOVE_HASH); + + case BUF_BLOCK_ZIP_FREE: + case BUF_BLOCK_ZIP_DIRTY: + case BUF_BLOCK_NOT_USED: + case BUF_BLOCK_READY_FOR_USE: + case BUF_BLOCK_MEMORY: + case BUF_BLOCK_REMOVE_HASH: + break; + } + + ut_error; + return(BUF_BLOCK_ZIP_FREE); +} + +/********************************************************************** +Puts a file page whose has no hash index to the free list. */ +static +void +buf_LRU_block_free_hashed_page( +/*===========================*/ + buf_block_t* block) /* in: block, must contain a file page and + be in a state where it can be freed */ +{ + ut_ad(buf_pool_mutex_own()); + ut_ad(mutex_own(&block->mutex)); + + buf_block_set_state(block, BUF_BLOCK_MEMORY); + + buf_LRU_block_free_non_file_page(block); +} + +/************************************************************************ +Update the historical stats that we are collecting for LRU eviction +policy at the end of each interval. */ +UNIV_INTERN +void +buf_LRU_stat_update(void) +/*=====================*/ +{ + buf_LRU_stat_t* item; + + /* If we haven't started eviction yet then don't update stats. */ + if (buf_pool->freed_page_clock == 0) { + goto func_exit; + } + + buf_pool_mutex_enter(); + + /* Update the index. */ + item = &buf_LRU_stat_arr[buf_LRU_stat_arr_ind]; + buf_LRU_stat_arr_ind++; + buf_LRU_stat_arr_ind %= BUF_LRU_STAT_N_INTERVAL; + + /* Add the current value and subtract the obsolete entry. */ + buf_LRU_stat_sum.io += buf_LRU_stat_cur.io - item->io; + buf_LRU_stat_sum.unzip += buf_LRU_stat_cur.unzip - item->unzip; + + /* Put current entry in the array. */ + memcpy(item, &buf_LRU_stat_cur, sizeof *item); + + buf_pool_mutex_exit(); + +func_exit: + /* Clear the current entry. */ + memset(&buf_LRU_stat_cur, 0, sizeof buf_LRU_stat_cur); +} + +#if defined UNIV_DEBUG || defined UNIV_BUF_DEBUG +/************************************************************************** +Validates the LRU list. */ +UNIV_INTERN +ibool +buf_LRU_validate(void) +/*==================*/ +{ + buf_page_t* bpage; + buf_block_t* block; + ulint old_len; + ulint new_len; + ulint LRU_pos; + + ut_ad(buf_pool); + buf_pool_mutex_enter(); + + if (UT_LIST_GET_LEN(buf_pool->LRU) >= BUF_LRU_OLD_MIN_LEN) { + + ut_a(buf_pool->LRU_old); + old_len = buf_pool->LRU_old_len; + new_len = 3 * (UT_LIST_GET_LEN(buf_pool->LRU) / 8); + ut_a(old_len >= new_len - BUF_LRU_OLD_TOLERANCE); + ut_a(old_len <= new_len + BUF_LRU_OLD_TOLERANCE); + } + + UT_LIST_VALIDATE(LRU, buf_page_t, buf_pool->LRU); + + bpage = UT_LIST_GET_FIRST(buf_pool->LRU); + + old_len = 0; + + while (bpage != NULL) { + + switch (buf_page_get_state(bpage)) { + case BUF_BLOCK_ZIP_FREE: + case BUF_BLOCK_NOT_USED: + case BUF_BLOCK_READY_FOR_USE: + case BUF_BLOCK_MEMORY: + case BUF_BLOCK_REMOVE_HASH: + ut_error; + break; + case BUF_BLOCK_FILE_PAGE: + ut_ad(((buf_block_t*) bpage)->in_unzip_LRU_list + == buf_page_belongs_to_unzip_LRU(bpage)); + case BUF_BLOCK_ZIP_PAGE: + case BUF_BLOCK_ZIP_DIRTY: + break; + } + + if (buf_page_is_old(bpage)) { + old_len++; + } + + if (buf_pool->LRU_old && (old_len == 1)) { + ut_a(buf_pool->LRU_old == bpage); + } + + LRU_pos = buf_page_get_LRU_position(bpage); + + bpage = UT_LIST_GET_NEXT(LRU, bpage); + + if (bpage) { + /* If the following assert fails, it may + not be an error: just the buf_pool clock + has wrapped around */ + ut_a(LRU_pos >= buf_page_get_LRU_position(bpage)); + } + } + + if (buf_pool->LRU_old) { + ut_a(buf_pool->LRU_old_len == old_len); + } + + UT_LIST_VALIDATE(list, buf_page_t, buf_pool->free); + + for (bpage = UT_LIST_GET_FIRST(buf_pool->free); + bpage != NULL; + bpage = UT_LIST_GET_NEXT(list, bpage)) { + + ut_a(buf_page_get_state(bpage) == BUF_BLOCK_NOT_USED); + } + + UT_LIST_VALIDATE(unzip_LRU, buf_block_t, buf_pool->unzip_LRU); + + for (block = UT_LIST_GET_FIRST(buf_pool->unzip_LRU); + block; + block = UT_LIST_GET_NEXT(unzip_LRU, block)) { + + ut_ad(block->in_unzip_LRU_list); + ut_ad(block->page.in_LRU_list); + ut_a(buf_page_belongs_to_unzip_LRU(&block->page)); + } + + buf_pool_mutex_exit(); + return(TRUE); +} +#endif /* UNIV_DEBUG || UNIV_BUF_DEBUG */ + +#if defined UNIV_DEBUG_PRINT || defined UNIV_DEBUG || defined UNIV_BUF_DEBUG +/************************************************************************** +Prints the LRU list. */ +UNIV_INTERN +void +buf_LRU_print(void) +/*===============*/ +{ + const buf_page_t* bpage; + + ut_ad(buf_pool); + buf_pool_mutex_enter(); + + fprintf(stderr, "Pool ulint clock %lu\n", + (ulong) buf_pool->ulint_clock); + + bpage = UT_LIST_GET_FIRST(buf_pool->LRU); + + while (bpage != NULL) { + + fprintf(stderr, "BLOCK space %lu page %lu ", + (ulong) buf_page_get_space(bpage), + (ulong) buf_page_get_page_no(bpage)); + + if (buf_page_is_old(bpage)) { + fputs("old ", stderr); + } + + if (bpage->buf_fix_count) { + fprintf(stderr, "buffix count %lu ", + (ulong) bpage->buf_fix_count); + } + + if (buf_page_get_io_fix(bpage)) { + fprintf(stderr, "io_fix %lu ", + (ulong) buf_page_get_io_fix(bpage)); + } + + if (bpage->oldest_modification) { + fputs("modif. ", stderr); + } + + switch (buf_page_get_state(bpage)) { + const byte* frame; + case BUF_BLOCK_FILE_PAGE: + frame = buf_block_get_frame((buf_block_t*) bpage); + fprintf(stderr, "\nLRU pos %lu type %lu" + " index id %lu\n", + (ulong) buf_page_get_LRU_position(bpage), + (ulong) fil_page_get_type(frame), + (ulong) ut_dulint_get_low( + btr_page_get_index_id(frame))); + break; + case BUF_BLOCK_ZIP_PAGE: + frame = bpage->zip.data; + fprintf(stderr, "\nLRU pos %lu type %lu size %lu" + " index id %lu\n", + (ulong) buf_page_get_LRU_position(bpage), + (ulong) fil_page_get_type(frame), + (ulong) buf_page_get_zip_size(bpage), + (ulong) ut_dulint_get_low( + btr_page_get_index_id(frame))); + break; + + default: + fprintf(stderr, "\nLRU pos %lu !state %lu!\n", + (ulong) buf_page_get_LRU_position(bpage), + (ulong) buf_page_get_state(bpage)); + break; + } + + bpage = UT_LIST_GET_NEXT(LRU, bpage); + } + + buf_pool_mutex_exit(); +} +#endif /* UNIV_DEBUG_PRINT || UNIV_DEBUG || UNIV_BUF_DEBUG */ === added file 'storage/xtradb/buf/buf0rea.c' --- a/storage/xtradb/buf/buf0rea.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/buf/buf0rea.c 2009-05-04 02:45:47 +0000 @@ -0,0 +1,818 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +The database buffer read + +Created 11/5/1995 Heikki Tuuri +*******************************************************/ + +#include "buf0rea.h" + +#include "fil0fil.h" +#include "mtr0mtr.h" + +#include "buf0buf.h" +#include "buf0flu.h" +#include "buf0lru.h" +#include "ibuf0ibuf.h" +#include "log0recv.h" +#include "trx0sys.h" +#include "os0file.h" +#include "srv0start.h" + +extern ulint srv_read_ahead; +extern ulint srv_read_ahead_rnd; +extern ulint srv_read_ahead_seq; +extern ulint srv_buf_pool_reads; + +/* The size in blocks of the area where the random read-ahead algorithm counts +the accessed pages when deciding whether to read-ahead */ +#define BUF_READ_AHEAD_RANDOM_AREA BUF_READ_AHEAD_AREA + +/* There must be at least this many pages in buf_pool in the area to start +a random read-ahead */ +#define BUF_READ_AHEAD_RANDOM_THRESHOLD (5 + buf_read_ahead_random_area / 8) + +/* The linear read-ahead area size */ +#define BUF_READ_AHEAD_LINEAR_AREA BUF_READ_AHEAD_AREA + +/* The linear read-ahead threshold */ +#define LINEAR_AREA_THRESHOLD_COEF 5 / 8 + +/* If there are buf_pool->curr_size per the number below pending reads, then +read-ahead is not done: this is to prevent flooding the buffer pool with +i/o-fixed buffer blocks */ +#define BUF_READ_AHEAD_PEND_LIMIT 2 + +/************************************************************************ +Low-level function which reads a page asynchronously from a file to the +buffer buf_pool if it is not already there, in which case does nothing. +Sets the io_fix flag and sets an exclusive lock on the buffer frame. The +flag is cleared and the x-lock released by an i/o-handler thread. */ +static +ulint +buf_read_page_low( +/*==============*/ + /* out: 1 if a read request was queued, 0 if the page + already resided in buf_pool, or if the page is in + the doublewrite buffer blocks in which case it is never + read into the pool, or if the tablespace does not + exist or is being dropped */ + ulint* err, /* out: DB_SUCCESS or DB_TABLESPACE_DELETED if we are + trying to read from a non-existent tablespace, or a + tablespace which is just now being dropped */ + ibool sync, /* in: TRUE if synchronous aio is desired */ + ulint mode, /* in: BUF_READ_IBUF_PAGES_ONLY, ..., + ORed to OS_AIO_SIMULATED_WAKE_LATER (see below + at read-ahead functions) */ + ulint space, /* in: space id */ + ulint zip_size,/* in: compressed page size, or 0 */ + ibool unzip, /* in: TRUE=request uncompressed page */ + ib_int64_t tablespace_version, /* in: if the space memory object has + this timestamp different from what we are giving here, + treat the tablespace as dropped; this is a timestamp we + use to stop dangling page reads from a tablespace + which we have DISCARDed + IMPORTed back */ + ulint offset) /* in: page number */ +{ + buf_page_t* bpage; + ulint wake_later; + + *err = DB_SUCCESS; + + wake_later = mode & OS_AIO_SIMULATED_WAKE_LATER; + mode = mode & ~OS_AIO_SIMULATED_WAKE_LATER; + + if (trx_doublewrite && space == TRX_SYS_SPACE + && ( (offset >= trx_doublewrite->block1 + && offset < trx_doublewrite->block1 + + TRX_SYS_DOUBLEWRITE_BLOCK_SIZE) + || (offset >= trx_doublewrite->block2 + && offset < trx_doublewrite->block2 + + TRX_SYS_DOUBLEWRITE_BLOCK_SIZE))) { + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: Warning: trying to read" + " doublewrite buffer page %lu\n", + (ulong) offset); + + return(0); + } + + if (ibuf_bitmap_page(zip_size, offset) + || trx_sys_hdr_page(space, offset)) { + + /* Trx sys header is so low in the latching order that we play + safe and do not leave the i/o-completion to an asynchronous + i/o-thread. Ibuf bitmap pages must always be read with + syncronous i/o, to make sure they do not get involved in + thread deadlocks. */ + + sync = TRUE; + } + + /* The following call will also check if the tablespace does not exist + or is being dropped; if we succeed in initing the page in the buffer + pool for read, then DISCARD cannot proceed until the read has + completed */ + bpage = buf_page_init_for_read(err, mode, space, zip_size, unzip, + tablespace_version, offset); + if (bpage == NULL) { + + return(0); + } + +#ifdef UNIV_DEBUG + if (buf_debug_prints) { + fprintf(stderr, + "Posting read request for page %lu, sync %lu\n", + (ulong) offset, + (ulong) sync); + } +#endif + + ut_ad(buf_page_in_file(bpage)); + + if (zip_size) { + *err = fil_io(OS_FILE_READ | wake_later, + sync, space, zip_size, offset, 0, zip_size, + bpage->zip.data, bpage); + } else { + ut_a(buf_page_get_state(bpage) == BUF_BLOCK_FILE_PAGE); + + *err = fil_io(OS_FILE_READ | wake_later, + sync, space, 0, offset, 0, UNIV_PAGE_SIZE, + ((buf_block_t*) bpage)->frame, bpage); + } + ut_a(*err == DB_SUCCESS); + + if (sync) { + /* The i/o is already completed when we arrive from + fil_read */ + buf_page_io_complete(bpage); + } + + return(1); +} + +/************************************************************************ +Applies a random read-ahead in buf_pool if there are at least a threshold +value of accessed pages from the random read-ahead area. Does not read any +page, not even the one at the position (space, offset), if the read-ahead +mechanism is not activated. NOTE 1: the calling thread may own latches on +pages: to avoid deadlocks this function must be written such that it cannot +end up waiting for these latches! NOTE 2: the calling thread must want +access to the page given: this rule is set to prevent unintended read-aheads +performed by ibuf routines, a situation which could result in a deadlock if +the OS does not support asynchronous i/o. */ +static +ulint +buf_read_ahead_random( +/*==================*/ + /* out: number of page read requests issued; NOTE + that if we read ibuf pages, it may happen that + the page at the given page number does not get + read even if we return a value > 0! */ + ulint space, /* in: space id */ + ulint zip_size,/* in: compressed page size in bytes, or 0 */ + ulint offset) /* in: page number of a page which the current thread + wants to access */ +{ + ib_int64_t tablespace_version; + ulint recent_blocks = 0; + ulint count; + ulint LRU_recent_limit; + ulint ibuf_mode; + ulint low, high; + ulint err; + ulint i; + ulint buf_read_ahead_random_area; + + if (!(srv_read_ahead & 1)) { + return(0); + } + + if (srv_startup_is_before_trx_rollback_phase) { + /* No read-ahead to avoid thread deadlocks */ + return(0); + } + + if (ibuf_bitmap_page(zip_size, offset) + || trx_sys_hdr_page(space, offset)) { + + /* If it is an ibuf bitmap page or trx sys hdr, we do + no read-ahead, as that could break the ibuf page access + order */ + + return(0); + } + + /* Remember the tablespace version before we ask te tablespace size + below: if DISCARD + IMPORT changes the actual .ibd file meanwhile, we + do not try to read outside the bounds of the tablespace! */ + + tablespace_version = fil_space_get_version(space); + + buf_read_ahead_random_area = BUF_READ_AHEAD_RANDOM_AREA; + + low = (offset / buf_read_ahead_random_area) + * buf_read_ahead_random_area; + high = (offset / buf_read_ahead_random_area + 1) + * buf_read_ahead_random_area; + if (high > fil_space_get_size(space)) { + + high = fil_space_get_size(space); + } + + /* Get the minimum LRU_position field value for an initial segment + of the LRU list, to determine which blocks have recently been added + to the start of the list. */ + + LRU_recent_limit = buf_LRU_get_recent_limit(); + + buf_pool_mutex_enter(); + + if (buf_pool->n_pend_reads + > buf_pool->curr_size / BUF_READ_AHEAD_PEND_LIMIT) { + buf_pool_mutex_exit(); + + return(0); + } + + /* Count how many blocks in the area have been recently accessed, + that is, reside near the start of the LRU list. */ + + for (i = low; i < high; i++) { + const buf_page_t* bpage = buf_page_hash_get(space, i); + + if (bpage + && buf_page_is_accessed(bpage) + && (buf_page_get_LRU_position(bpage) > LRU_recent_limit)) { + + recent_blocks++; + + if (recent_blocks >= BUF_READ_AHEAD_RANDOM_THRESHOLD) { + + buf_pool_mutex_exit(); + goto read_ahead; + } + } + } + + buf_pool_mutex_exit(); + /* Do nothing */ + return(0); + +read_ahead: + /* Read all the suitable blocks within the area */ + + if (ibuf_inside()) { + ibuf_mode = BUF_READ_IBUF_PAGES_ONLY; + } else { + ibuf_mode = BUF_READ_ANY_PAGE; + } + + count = 0; + + for (i = low; i < high; i++) { + /* It is only sensible to do read-ahead in the non-sync aio + mode: hence FALSE as the first parameter */ + + if (!ibuf_bitmap_page(zip_size, i)) { + count += buf_read_page_low( + &err, FALSE, + ibuf_mode | OS_AIO_SIMULATED_WAKE_LATER, + space, zip_size, FALSE, + tablespace_version, i); + if (err == DB_TABLESPACE_DELETED) { + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: Warning: in random" + " readahead trying to access\n" + "InnoDB: tablespace %lu page %lu,\n" + "InnoDB: but the tablespace does not" + " exist or is just being dropped.\n", + (ulong) space, (ulong) i); + } + } + } + + /* In simulated aio we wake the aio handler threads only after + queuing all aio requests, in native aio the following call does + nothing: */ + + os_aio_simulated_wake_handler_threads(); + +#ifdef UNIV_DEBUG + if (buf_debug_prints && (count > 0)) { + fprintf(stderr, + "Random read-ahead space %lu offset %lu pages %lu\n", + (ulong) space, (ulong) offset, + (ulong) count); + } +#endif /* UNIV_DEBUG */ + + ++srv_read_ahead_rnd; + return(count); +} + +/************************************************************************ +High-level function which reads a page asynchronously from a file to the +buffer buf_pool if it is not already there. Sets the io_fix flag and sets +an exclusive lock on the buffer frame. The flag is cleared and the x-lock +released by the i/o-handler thread. Does a random read-ahead if it seems +sensible. */ +UNIV_INTERN +ulint +buf_read_page( +/*==========*/ + /* out: number of page read requests issued: this can + be > 1 if read-ahead occurred */ + ulint space, /* in: space id */ + ulint zip_size,/* in: compressed page size in bytes, or 0 */ + ulint offset) /* in: page number */ +{ + ib_int64_t tablespace_version; + ulint count; + ulint count2; + ulint err; + + tablespace_version = fil_space_get_version(space); + + count = buf_read_ahead_random(space, zip_size, offset); + + /* We do the i/o in the synchronous aio mode to save thread + switches: hence TRUE */ + + count2 = buf_read_page_low(&err, TRUE, BUF_READ_ANY_PAGE, space, + zip_size, FALSE, + tablespace_version, offset); + srv_buf_pool_reads+= count2; + if (err == DB_TABLESPACE_DELETED) { + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: Error: trying to access" + " tablespace %lu page no. %lu,\n" + "InnoDB: but the tablespace does not exist" + " or is just being dropped.\n", + (ulong) space, (ulong) offset); + } + + /* Flush pages from the end of the LRU list if necessary */ + buf_flush_free_margin(FALSE); + + /* Increment number of I/O operations used for LRU policy. */ + buf_LRU_stat_inc_io(); + + return(count + count2); +} + +/************************************************************************ +Applies linear read-ahead if in the buf_pool the page is a border page of +a linear read-ahead area and all the pages in the area have been accessed. +Does not read any page if the read-ahead mechanism is not activated. Note +that the the algorithm looks at the 'natural' adjacent successor and +predecessor of the page, which on the leaf level of a B-tree are the next +and previous page in the chain of leaves. To know these, the page specified +in (space, offset) must already be present in the buf_pool. Thus, the +natural way to use this function is to call it when a page in the buf_pool +is accessed the first time, calling this function just after it has been +bufferfixed. +NOTE 1: as this function looks at the natural predecessor and successor +fields on the page, what happens, if these are not initialized to any +sensible value? No problem, before applying read-ahead we check that the +area to read is within the span of the space, if not, read-ahead is not +applied. An uninitialized value may result in a useless read operation, but +only very improbably. +NOTE 2: the calling thread may own latches on pages: to avoid deadlocks this +function must be written such that it cannot end up waiting for these +latches! +NOTE 3: the calling thread must want access to the page given: this rule is +set to prevent unintended read-aheads performed by ibuf routines, a situation +which could result in a deadlock if the OS does not support asynchronous io. */ +UNIV_INTERN +ulint +buf_read_ahead_linear( +/*==================*/ + /* out: number of page read requests issued */ + ulint space, /* in: space id */ + ulint zip_size,/* in: compressed page size in bytes, or 0 */ + ulint offset) /* in: page number of a page; NOTE: the current thread + must want access to this page (see NOTE 3 above) */ +{ + ib_int64_t tablespace_version; + buf_page_t* bpage; + buf_frame_t* frame; + buf_page_t* pred_bpage = NULL; + ulint pred_offset; + ulint succ_offset; + ulint count; + int asc_or_desc; + ulint new_offset; + ulint fail_count; + ulint ibuf_mode; + ulint low, high; + ulint err; + ulint i; + const ulint buf_read_ahead_linear_area + = BUF_READ_AHEAD_LINEAR_AREA; + + if (!(srv_read_ahead & 2)) { + return(0); + } + + if (UNIV_UNLIKELY(srv_startup_is_before_trx_rollback_phase)) { + /* No read-ahead to avoid thread deadlocks */ + return(0); + } + + low = (offset / buf_read_ahead_linear_area) + * buf_read_ahead_linear_area; + high = (offset / buf_read_ahead_linear_area + 1) + * buf_read_ahead_linear_area; + + if ((offset != low) && (offset != high - 1)) { + /* This is not a border page of the area: return */ + + return(0); + } + + if (ibuf_bitmap_page(zip_size, offset) + || trx_sys_hdr_page(space, offset)) { + + /* If it is an ibuf bitmap page or trx sys hdr, we do + no read-ahead, as that could break the ibuf page access + order */ + + return(0); + } + + /* Remember the tablespace version before we ask te tablespace size + below: if DISCARD + IMPORT changes the actual .ibd file meanwhile, we + do not try to read outside the bounds of the tablespace! */ + + tablespace_version = fil_space_get_version(space); + + buf_pool_mutex_enter(); + + if (high > fil_space_get_size(space)) { + buf_pool_mutex_exit(); + /* The area is not whole, return */ + + return(0); + } + + if (buf_pool->n_pend_reads + > buf_pool->curr_size / BUF_READ_AHEAD_PEND_LIMIT) { + buf_pool_mutex_exit(); + + return(0); + } + + /* Check that almost all pages in the area have been accessed; if + offset == low, the accesses must be in a descending order, otherwise, + in an ascending order. */ + + asc_or_desc = 1; + + if (offset == low) { + asc_or_desc = -1; + } + + fail_count = 0; + + for (i = low; i < high; i++) { + bpage = buf_page_hash_get(space, i); + + if ((bpage == NULL) || !buf_page_is_accessed(bpage)) { + /* Not accessed */ + fail_count++; + + } else if (pred_bpage + && (ut_ulint_cmp( + buf_page_get_LRU_position(bpage), + buf_page_get_LRU_position(pred_bpage)) + != asc_or_desc)) { + /* Accesses not in the right order */ + + fail_count++; + pred_bpage = bpage; + } + } + + if (fail_count > buf_read_ahead_linear_area + * LINEAR_AREA_THRESHOLD_COEF) { + /* Too many failures: return */ + + buf_pool_mutex_exit(); + + return(0); + } + + /* If we got this far, we know that enough pages in the area have + been accessed in the right order: linear read-ahead can be sensible */ + + bpage = buf_page_hash_get(space, offset); + + if (bpage == NULL) { + buf_pool_mutex_exit(); + + return(0); + } + + switch (buf_page_get_state(bpage)) { + case BUF_BLOCK_ZIP_PAGE: + frame = bpage->zip.data; + break; + case BUF_BLOCK_FILE_PAGE: + frame = ((buf_block_t*) bpage)->frame; + break; + default: + ut_error; + break; + } + + /* Read the natural predecessor and successor page addresses from + the page; NOTE that because the calling thread may have an x-latch + on the page, we do not acquire an s-latch on the page, this is to + prevent deadlocks. Even if we read values which are nonsense, the + algorithm will work. */ + + pred_offset = fil_page_get_prev(frame); + succ_offset = fil_page_get_next(frame); + + buf_pool_mutex_exit(); + + if ((offset == low) && (succ_offset == offset + 1)) { + + /* This is ok, we can continue */ + new_offset = pred_offset; + + } else if ((offset == high - 1) && (pred_offset == offset - 1)) { + + /* This is ok, we can continue */ + new_offset = succ_offset; + } else { + /* Successor or predecessor not in the right order */ + + return(0); + } + + low = (new_offset / buf_read_ahead_linear_area) + * buf_read_ahead_linear_area; + high = (new_offset / buf_read_ahead_linear_area + 1) + * buf_read_ahead_linear_area; + + if ((new_offset != low) && (new_offset != high - 1)) { + /* This is not a border page of the area: return */ + + return(0); + } + + if (high > fil_space_get_size(space)) { + /* The area is not whole, return */ + + return(0); + } + + /* If we got this far, read-ahead can be sensible: do it */ + + if (ibuf_inside()) { + ibuf_mode = BUF_READ_IBUF_PAGES_ONLY; + } else { + ibuf_mode = BUF_READ_ANY_PAGE; + } + + count = 0; + + /* Since Windows XP seems to schedule the i/o handler thread + very eagerly, and consequently it does not wait for the + full read batch to be posted, we use special heuristics here */ + + os_aio_simulated_put_read_threads_to_sleep(); + + for (i = low; i < high; i++) { + /* It is only sensible to do read-ahead in the non-sync + aio mode: hence FALSE as the first parameter */ + + if (!ibuf_bitmap_page(zip_size, i)) { + count += buf_read_page_low( + &err, FALSE, + ibuf_mode | OS_AIO_SIMULATED_WAKE_LATER, + space, zip_size, FALSE, tablespace_version, i); + if (err == DB_TABLESPACE_DELETED) { + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: Warning: in" + " linear readahead trying to access\n" + "InnoDB: tablespace %lu page %lu,\n" + "InnoDB: but the tablespace does not" + " exist or is just being dropped.\n", + (ulong) space, (ulong) i); + } + } + } + + /* In simulated aio we wake the aio handler threads only after + queuing all aio requests, in native aio the following call does + nothing: */ + + os_aio_simulated_wake_handler_threads(); + + /* Flush pages from the end of the LRU list if necessary */ + buf_flush_free_margin(FALSE); + +#ifdef UNIV_DEBUG + if (buf_debug_prints && (count > 0)) { + fprintf(stderr, + "LINEAR read-ahead space %lu offset %lu pages %lu\n", + (ulong) space, (ulong) offset, (ulong) count); + } +#endif /* UNIV_DEBUG */ + + /* Read ahead is considered one I/O operation for the purpose of + LRU policy decision. */ + buf_LRU_stat_inc_io(); + + ++srv_read_ahead_seq; + return(count); +} + +/************************************************************************ +Issues read requests for pages which the ibuf module wants to read in, in +order to contract the insert buffer tree. Technically, this function is like +a read-ahead function. */ +UNIV_INTERN +void +buf_read_ibuf_merge_pages( +/*======================*/ + ibool sync, /* in: TRUE if the caller + wants this function to wait + for the highest address page + to get read in, before this + function returns */ + const ulint* space_ids, /* in: array of space ids */ + const ib_int64_t* space_versions,/* in: the spaces must have + this version number + (timestamp), otherwise we + discard the read; we use this + to cancel reads if DISCARD + + IMPORT may have changed the + tablespace size */ + const ulint* page_nos, /* in: array of page numbers + to read, with the highest page + number the last in the + array */ + ulint n_stored) /* in: number of elements + in the arrays */ +{ + ulint i; + + ut_ad(!ibuf_inside()); +#ifdef UNIV_IBUF_DEBUG + ut_a(n_stored < UNIV_PAGE_SIZE); +#endif + while (buf_pool->n_pend_reads + > buf_pool->curr_size / BUF_READ_AHEAD_PEND_LIMIT) { + os_thread_sleep(500000); + } + + for (i = 0; i < n_stored; i++) { + ulint zip_size = fil_space_get_zip_size(space_ids[i]); + ulint err; + + if (UNIV_UNLIKELY(zip_size == ULINT_UNDEFINED)) { + + goto tablespace_deleted; + } + + buf_read_page_low(&err, sync && (i + 1 == n_stored), + BUF_READ_ANY_PAGE, space_ids[i], + zip_size, TRUE, space_versions[i], + page_nos[i]); + + if (UNIV_UNLIKELY(err == DB_TABLESPACE_DELETED)) { +tablespace_deleted: + /* We have deleted or are deleting the single-table + tablespace: remove the entries for that page */ + + ibuf_merge_or_delete_for_page(NULL, space_ids[i], + page_nos[i], + zip_size, FALSE); + } + } + + os_aio_simulated_wake_handler_threads(); + + /* Flush pages from the end of the LRU list if necessary */ + buf_flush_free_margin(FALSE); + +#ifdef UNIV_DEBUG + if (buf_debug_prints) { + fprintf(stderr, + "Ibuf merge read-ahead space %lu pages %lu\n", + (ulong) space_ids[0], (ulong) n_stored); + } +#endif /* UNIV_DEBUG */ +} + +/************************************************************************ +Issues read requests for pages which recovery wants to read in. */ +UNIV_INTERN +void +buf_read_recv_pages( +/*================*/ + ibool sync, /* in: TRUE if the caller + wants this function to wait + for the highest address page + to get read in, before this + function returns */ + ulint space, /* in: space id */ + ulint zip_size, /* in: compressed page size in + bytes, or 0 */ + const ulint* page_nos, /* in: array of page numbers + to read, with the highest page + number the last in the + array */ + ulint n_stored) /* in: number of page numbers + in the array */ +{ + ib_int64_t tablespace_version; + ulint count; + ulint err; + ulint i; + + zip_size = fil_space_get_zip_size(space); + tablespace_version = fil_space_get_version(space); + + for (i = 0; i < n_stored; i++) { + + count = 0; + + os_aio_print_debug = FALSE; + + while (buf_pool->n_pend_reads >= recv_n_pool_free_frames / 2) { + + os_aio_simulated_wake_handler_threads(); + os_thread_sleep(500000); + + count++; + + if (count > 100) { + fprintf(stderr, + "InnoDB: Error: InnoDB has waited for" + " 50 seconds for pending\n" + "InnoDB: reads to the buffer pool to" + " be finished.\n" + "InnoDB: Number of pending reads %lu," + " pending pread calls %lu\n", + (ulong) buf_pool->n_pend_reads, + (ulong)os_file_n_pending_preads); + + os_aio_print_debug = TRUE; + } + } + + os_aio_print_debug = FALSE; + + if ((i + 1 == n_stored) && sync) { + buf_read_page_low(&err, TRUE, BUF_READ_ANY_PAGE, space, + zip_size, TRUE, tablespace_version, + page_nos[i]); + } else { + buf_read_page_low(&err, FALSE, BUF_READ_ANY_PAGE + | OS_AIO_SIMULATED_WAKE_LATER, + space, zip_size, TRUE, + tablespace_version, page_nos[i]); + } + } + + os_aio_simulated_wake_handler_threads(); + + /* Flush pages from the end of the LRU list if necessary */ + buf_flush_free_margin(FALSE); + +#ifdef UNIV_DEBUG + if (buf_debug_prints) { + fprintf(stderr, + "Recovery applies read-ahead pages %lu\n", + (ulong) n_stored); + } +#endif /* UNIV_DEBUG */ +} === added directory 'storage/xtradb/data' === added file 'storage/xtradb/data/data0data.c' --- a/storage/xtradb/data/data0data.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/data/data0data.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,758 @@ +/***************************************************************************** + +Copyright (c) 1994, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/************************************************************************ +SQL data field and tuple + +Created 5/30/1994 Heikki Tuuri +*************************************************************************/ + +#include "data0data.h" + +#ifdef UNIV_NONINL +#include "data0data.ic" +#endif + +#include "rem0rec.h" +#include "rem0cmp.h" +#include "page0page.h" +#include "page0zip.h" +#include "dict0dict.h" +#include "btr0cur.h" + +#include <ctype.h> + +#ifdef UNIV_DEBUG +/* data pointers of tuple fields are initialized to point here +for error checking */ +UNIV_INTERN byte data_error; + +# ifndef UNIV_DEBUG_VALGRIND +/* this is used to fool the compiler in dtuple_validate */ +UNIV_INTERN ulint data_dummy; +# endif /* !UNIV_DEBUG_VALGRIND */ +#endif /* UNIV_DEBUG */ + +/************************************************************************* +Tests if dfield data length and content is equal to the given. */ +UNIV_INTERN +ibool +dfield_data_is_binary_equal( +/*========================*/ + /* out: TRUE if equal */ + const dfield_t* field, /* in: field */ + ulint len, /* in: data length or UNIV_SQL_NULL */ + const byte* data) /* in: data */ +{ + if (len != dfield_get_len(field)) { + + return(FALSE); + } + + if (len == UNIV_SQL_NULL) { + + return(TRUE); + } + + if (0 != memcmp(dfield_get_data(field), data, len)) { + + return(FALSE); + } + + return(TRUE); +} + +/**************************************************************** +Compare two data tuples, respecting the collation of character fields. */ +UNIV_INTERN +int +dtuple_coll_cmp( +/*============*/ + /* out: 1, 0 , -1 if tuple1 is greater, equal, + less, respectively, than tuple2 */ + const dtuple_t* tuple1, /* in: tuple 1 */ + const dtuple_t* tuple2) /* in: tuple 2 */ +{ + ulint n_fields; + ulint i; + + ut_ad(tuple1 && tuple2); + ut_ad(tuple1->magic_n == DATA_TUPLE_MAGIC_N); + ut_ad(tuple2->magic_n == DATA_TUPLE_MAGIC_N); + ut_ad(dtuple_check_typed(tuple1)); + ut_ad(dtuple_check_typed(tuple2)); + + n_fields = dtuple_get_n_fields(tuple1); + + if (n_fields != dtuple_get_n_fields(tuple2)) { + + return(n_fields < dtuple_get_n_fields(tuple2) ? -1 : 1); + } + + for (i = 0; i < n_fields; i++) { + int cmp; + const dfield_t* field1 = dtuple_get_nth_field(tuple1, i); + const dfield_t* field2 = dtuple_get_nth_field(tuple2, i); + + cmp = cmp_dfield_dfield(field1, field2); + + if (cmp) { + return(cmp); + } + } + + return(0); +} + +/************************************************************************* +Sets number of fields used in a tuple. Normally this is set in +dtuple_create, but if you want later to set it smaller, you can use this. */ +UNIV_INTERN +void +dtuple_set_n_fields( +/*================*/ + dtuple_t* tuple, /* in: tuple */ + ulint n_fields) /* in: number of fields */ +{ + ut_ad(tuple); + + tuple->n_fields = n_fields; + tuple->n_fields_cmp = n_fields; +} + +/************************************************************** +Checks that a data field is typed. */ +static +ibool +dfield_check_typed_no_assert( +/*=========================*/ + /* out: TRUE if ok */ + const dfield_t* field) /* in: data field */ +{ + if (dfield_get_type(field)->mtype > DATA_MYSQL + || dfield_get_type(field)->mtype < DATA_VARCHAR) { + + fprintf(stderr, + "InnoDB: Error: data field type %lu, len %lu\n", + (ulong) dfield_get_type(field)->mtype, + (ulong) dfield_get_len(field)); + return(FALSE); + } + + return(TRUE); +} + +/************************************************************** +Checks that a data tuple is typed. */ +UNIV_INTERN +ibool +dtuple_check_typed_no_assert( +/*=========================*/ + /* out: TRUE if ok */ + const dtuple_t* tuple) /* in: tuple */ +{ + const dfield_t* field; + ulint i; + + if (dtuple_get_n_fields(tuple) > REC_MAX_N_FIELDS) { + fprintf(stderr, + "InnoDB: Error: index entry has %lu fields\n", + (ulong) dtuple_get_n_fields(tuple)); +dump: + fputs("InnoDB: Tuple contents: ", stderr); + dtuple_print(stderr, tuple); + putc('\n', stderr); + + return(FALSE); + } + + for (i = 0; i < dtuple_get_n_fields(tuple); i++) { + + field = dtuple_get_nth_field(tuple, i); + + if (!dfield_check_typed_no_assert(field)) { + goto dump; + } + } + + return(TRUE); +} + +/************************************************************** +Checks that a data field is typed. Asserts an error if not. */ +UNIV_INTERN +ibool +dfield_check_typed( +/*===============*/ + /* out: TRUE if ok */ + const dfield_t* field) /* in: data field */ +{ + if (dfield_get_type(field)->mtype > DATA_MYSQL + || dfield_get_type(field)->mtype < DATA_VARCHAR) { + + fprintf(stderr, + "InnoDB: Error: data field type %lu, len %lu\n", + (ulong) dfield_get_type(field)->mtype, + (ulong) dfield_get_len(field)); + + ut_error; + } + + return(TRUE); +} + +/************************************************************** +Checks that a data tuple is typed. Asserts an error if not. */ +UNIV_INTERN +ibool +dtuple_check_typed( +/*===============*/ + /* out: TRUE if ok */ + const dtuple_t* tuple) /* in: tuple */ +{ + const dfield_t* field; + ulint i; + + for (i = 0; i < dtuple_get_n_fields(tuple); i++) { + + field = dtuple_get_nth_field(tuple, i); + + ut_a(dfield_check_typed(field)); + } + + return(TRUE); +} + +#ifdef UNIV_DEBUG +/************************************************************** +Validates the consistency of a tuple which must be complete, i.e, +all fields must have been set. */ +UNIV_INTERN +ibool +dtuple_validate( +/*============*/ + /* out: TRUE if ok */ + const dtuple_t* tuple) /* in: tuple */ +{ + const dfield_t* field; + ulint n_fields; + ulint len; + ulint i; + + ut_ad(tuple->magic_n == DATA_TUPLE_MAGIC_N); + + n_fields = dtuple_get_n_fields(tuple); + + /* We dereference all the data of each field to test + for memory traps */ + + for (i = 0; i < n_fields; i++) { + + field = dtuple_get_nth_field(tuple, i); + len = dfield_get_len(field); + + if (!dfield_is_null(field)) { + + const byte* data = dfield_get_data(field); +#ifndef UNIV_DEBUG_VALGRIND + ulint j; + + for (j = 0; j < len; j++) { + + data_dummy += *data; /* fool the compiler not + to optimize out this + code */ + data++; + } +#endif /* !UNIV_DEBUG_VALGRIND */ + + UNIV_MEM_ASSERT_RW(data, len); + } + } + + ut_a(dtuple_check_typed(tuple)); + + return(TRUE); +} +#endif /* UNIV_DEBUG */ + +/***************************************************************** +Pretty prints a dfield value according to its data type. */ +UNIV_INTERN +void +dfield_print( +/*=========*/ + const dfield_t* dfield) /* in: dfield */ +{ + const byte* data; + ulint len; + ulint i; + + len = dfield_get_len(dfield); + data = dfield_get_data(dfield); + + if (dfield_is_null(dfield)) { + fputs("NULL", stderr); + + return; + } + + switch (dtype_get_mtype(dfield_get_type(dfield))) { + case DATA_CHAR: + case DATA_VARCHAR: + for (i = 0; i < len; i++) { + int c = *data++; + putc(isprint(c) ? c : ' ', stderr); + } + + if (dfield_is_ext(dfield)) { + fputs("(external)", stderr); + } + break; + case DATA_INT: + ut_a(len == 4); /* only works for 32-bit integers */ + fprintf(stderr, "%d", (int)mach_read_from_4(data)); + break; + default: + ut_error; + } +} + +/***************************************************************** +Pretty prints a dfield value according to its data type. Also the hex string +is printed if a string contains non-printable characters. */ +UNIV_INTERN +void +dfield_print_also_hex( +/*==================*/ + const dfield_t* dfield) /* in: dfield */ +{ + const byte* data; + ulint len; + ulint prtype; + ulint i; + ibool print_also_hex; + + len = dfield_get_len(dfield); + data = dfield_get_data(dfield); + + if (dfield_is_null(dfield)) { + fputs("NULL", stderr); + + return; + } + + prtype = dtype_get_prtype(dfield_get_type(dfield)); + + switch (dtype_get_mtype(dfield_get_type(dfield))) { + dulint id; + case DATA_INT: + switch (len) { + ulint val; + case 1: + val = mach_read_from_1(data); + + if (!(prtype & DATA_UNSIGNED)) { + val &= ~0x80; + fprintf(stderr, "%ld", (long) val); + } else { + fprintf(stderr, "%lu", (ulong) val); + } + break; + + case 2: + val = mach_read_from_2(data); + + if (!(prtype & DATA_UNSIGNED)) { + val &= ~0x8000; + fprintf(stderr, "%ld", (long) val); + } else { + fprintf(stderr, "%lu", (ulong) val); + } + break; + + case 3: + val = mach_read_from_3(data); + + if (!(prtype & DATA_UNSIGNED)) { + val &= ~0x800000; + fprintf(stderr, "%ld", (long) val); + } else { + fprintf(stderr, "%lu", (ulong) val); + } + break; + + case 4: + val = mach_read_from_4(data); + + if (!(prtype & DATA_UNSIGNED)) { + val &= ~0x80000000; + fprintf(stderr, "%ld", (long) val); + } else { + fprintf(stderr, "%lu", (ulong) val); + } + break; + + case 6: + id = mach_read_from_6(data); + fprintf(stderr, "{%lu %lu}", + ut_dulint_get_high(id), + ut_dulint_get_low(id)); + break; + + case 7: + id = mach_read_from_7(data); + fprintf(stderr, "{%lu %lu}", + ut_dulint_get_high(id), + ut_dulint_get_low(id)); + break; + case 8: + id = mach_read_from_8(data); + fprintf(stderr, "{%lu %lu}", + ut_dulint_get_high(id), + ut_dulint_get_low(id)); + break; + default: + goto print_hex; + } + break; + + case DATA_SYS: + switch (prtype & DATA_SYS_PRTYPE_MASK) { + case DATA_TRX_ID: + id = mach_read_from_6(data); + + fprintf(stderr, "trx_id " TRX_ID_FMT, + TRX_ID_PREP_PRINTF(id)); + break; + + case DATA_ROLL_PTR: + id = mach_read_from_7(data); + + fprintf(stderr, "roll_ptr {%lu %lu}", + ut_dulint_get_high(id), ut_dulint_get_low(id)); + break; + + case DATA_ROW_ID: + id = mach_read_from_6(data); + + fprintf(stderr, "row_id {%lu %lu}", + ut_dulint_get_high(id), ut_dulint_get_low(id)); + break; + + default: + id = mach_dulint_read_compressed(data); + + fprintf(stderr, "mix_id {%lu %lu}", + ut_dulint_get_high(id), ut_dulint_get_low(id)); + } + break; + + case DATA_CHAR: + case DATA_VARCHAR: + print_also_hex = FALSE; + + for (i = 0; i < len; i++) { + int c = *data++; + + if (!isprint(c)) { + print_also_hex = TRUE; + + fprintf(stderr, "\\x%02x", (unsigned char) c); + } else { + putc(c, stderr); + } + } + + if (dfield_is_ext(dfield)) { + fputs("(external)", stderr); + } + + if (!print_also_hex) { + break; + } + + data = dfield_get_data(dfield); + /* fall through */ + + case DATA_BINARY: + default: +print_hex: + fputs(" Hex: ",stderr); + + for (i = 0; i < len; i++) { + fprintf(stderr, "%02lx", (ulint) *data++); + } + + if (dfield_is_ext(dfield)) { + fputs("(external)", stderr); + } + } +} + +/***************************************************************** +Print a dfield value using ut_print_buf. */ +static +void +dfield_print_raw( +/*=============*/ + FILE* f, /* in: output stream */ + const dfield_t* dfield) /* in: dfield */ +{ + ulint len = dfield_get_len(dfield); + if (!dfield_is_null(dfield)) { + ulint print_len = ut_min(len, 1000); + ut_print_buf(f, dfield_get_data(dfield), print_len); + if (len != print_len) { + fprintf(f, "(total %lu bytes%s)", + (ulong) len, + dfield_is_ext(dfield) ? ", external" : ""); + } + } else { + fputs(" SQL NULL", f); + } +} + +/************************************************************** +The following function prints the contents of a tuple. */ +UNIV_INTERN +void +dtuple_print( +/*=========*/ + FILE* f, /* in: output stream */ + const dtuple_t* tuple) /* in: tuple */ +{ + ulint n_fields; + ulint i; + + n_fields = dtuple_get_n_fields(tuple); + + fprintf(f, "DATA TUPLE: %lu fields;\n", (ulong) n_fields); + + for (i = 0; i < n_fields; i++) { + fprintf(f, " %lu:", (ulong) i); + + dfield_print_raw(f, dtuple_get_nth_field(tuple, i)); + + putc(';', f); + putc('\n', f); + } + + ut_ad(dtuple_validate(tuple)); +} + +/****************************************************************** +Moves parts of long fields in entry to the big record vector so that +the size of tuple drops below the maximum record size allowed in the +database. Moves data only from those fields which are not necessary +to determine uniquely the insertion place of the tuple in the index. */ +UNIV_INTERN +big_rec_t* +dtuple_convert_big_rec( +/*===================*/ + /* out, own: created big record vector, + NULL if we are not able to shorten + the entry enough, i.e., if there are + too many fixed-length or short fields + in entry or the index is clustered */ + dict_index_t* index, /* in: index */ + dtuple_t* entry, /* in/out: index entry */ + ulint* n_ext) /* in/out: number of + externally stored columns */ +{ + mem_heap_t* heap; + big_rec_t* vector; + dfield_t* dfield; + dict_field_t* ifield; + ulint size; + ulint n_fields; + ulint local_len; + ulint local_prefix_len; + + if (UNIV_UNLIKELY(!dict_index_is_clust(index))) { + return(NULL); + } + + if (dict_table_get_format(index->table) < DICT_TF_FORMAT_ZIP) { + /* up to MySQL 5.1: store a 768-byte prefix locally */ + local_len = BTR_EXTERN_FIELD_REF_SIZE + DICT_MAX_INDEX_COL_LEN; + } else { + /* new-format table: do not store any BLOB prefix locally */ + local_len = BTR_EXTERN_FIELD_REF_SIZE; + } + + ut_a(dtuple_check_typed_no_assert(entry)); + + size = rec_get_converted_size(index, entry, *n_ext); + + if (UNIV_UNLIKELY(size > 1000000000)) { + fprintf(stderr, + "InnoDB: Warning: tuple size very big: %lu\n", + (ulong) size); + fputs("InnoDB: Tuple contents: ", stderr); + dtuple_print(stderr, entry); + putc('\n', stderr); + } + + heap = mem_heap_create(size + dtuple_get_n_fields(entry) + * sizeof(big_rec_field_t) + 1000); + + vector = mem_heap_alloc(heap, sizeof(big_rec_t)); + + vector->heap = heap; + vector->fields = mem_heap_alloc(heap, dtuple_get_n_fields(entry) + * sizeof(big_rec_field_t)); + + /* Decide which fields to shorten: the algorithm is to look for + a variable-length field that yields the biggest savings when + stored externally */ + + n_fields = 0; + + while (page_zip_rec_needs_ext(rec_get_converted_size(index, entry, + *n_ext), + dict_table_is_comp(index->table), + dict_index_get_n_fields(index), + dict_table_zip_size(index->table))) { + ulint i; + ulint longest = 0; + ulint longest_i = ULINT_MAX; + byte* data; + big_rec_field_t* b; + + for (i = dict_index_get_n_unique_in_tree(index); + i < dtuple_get_n_fields(entry); i++) { + ulint savings; + + dfield = dtuple_get_nth_field(entry, i); + ifield = dict_index_get_nth_field(index, i); + + /* Skip fixed-length, NULL, externally stored, + or short columns */ + + if (ifield->fixed_len + || dfield_is_null(dfield) + || dfield_is_ext(dfield) + || dfield_get_len(dfield) <= local_len + || dfield_get_len(dfield) + <= BTR_EXTERN_FIELD_REF_SIZE * 2) { + goto skip_field; + } + + savings = dfield_get_len(dfield) - local_len; + + /* Check that there would be savings */ + if (longest >= savings) { + goto skip_field; + } + + longest_i = i; + longest = savings; + +skip_field: + continue; + } + + if (!longest) { + /* Cannot shorten more */ + + mem_heap_free(heap); + + return(NULL); + } + + /* Move data from field longest_i to big rec vector. + + We store the first bytes locally to the record. Then + we can calculate all ordering fields in all indexes + from locally stored data. */ + + dfield = dtuple_get_nth_field(entry, longest_i); + ifield = dict_index_get_nth_field(index, longest_i); + local_prefix_len = local_len - BTR_EXTERN_FIELD_REF_SIZE; + + b = &vector->fields[n_fields]; + b->field_no = longest_i; + b->len = dfield_get_len(dfield) - local_prefix_len; + b->data = (char*) dfield_get_data(dfield) + local_prefix_len; + + /* Allocate the locally stored part of the column. */ + data = mem_heap_alloc(heap, local_len); + + /* Copy the local prefix. */ + memcpy(data, dfield_get_data(dfield), local_prefix_len); + /* Clear the extern field reference (BLOB pointer). */ + memset(data + local_prefix_len, 0, BTR_EXTERN_FIELD_REF_SIZE); +#if 0 + /* The following would fail the Valgrind checks in + page_cur_insert_rec_low() and page_cur_insert_rec_zip(). + The BLOB pointers in the record will be initialized after + the record and the BLOBs have been written. */ + UNIV_MEM_ALLOC(data + local_prefix_len, + BTR_EXTERN_FIELD_REF_SIZE); +#endif + + dfield_set_data(dfield, data, local_len); + dfield_set_ext(dfield); + + n_fields++; + (*n_ext)++; + ut_ad(n_fields < dtuple_get_n_fields(entry)); + } + + vector->n_fields = n_fields; + return(vector); +} + +/****************************************************************** +Puts back to entry the data stored in vector. Note that to ensure the +fields in entry can accommodate the data, vector must have been created +from entry with dtuple_convert_big_rec. */ +UNIV_INTERN +void +dtuple_convert_back_big_rec( +/*========================*/ + dict_index_t* index __attribute__((unused)), /* in: index */ + dtuple_t* entry, /* in: entry whose data was put to vector */ + big_rec_t* vector) /* in, own: big rec vector; it is + freed in this function */ +{ + big_rec_field_t* b = vector->fields; + const big_rec_field_t* const end = b + vector->n_fields; + + for (; b < end; b++) { + dfield_t* dfield; + ulint local_len; + + dfield = dtuple_get_nth_field(entry, b->field_no); + local_len = dfield_get_len(dfield); + + ut_ad(dfield_is_ext(dfield)); + ut_ad(local_len >= BTR_EXTERN_FIELD_REF_SIZE); + + local_len -= BTR_EXTERN_FIELD_REF_SIZE; + + ut_ad(local_len <= DICT_MAX_INDEX_COL_LEN); + + dfield_set_data(dfield, + (char*) b->data - local_len, + b->len + local_len); + } + + mem_heap_free(vector->heap); +} === added file 'storage/xtradb/data/data0type.c' --- a/storage/xtradb/data/data0type.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/data/data0type.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,300 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Data types + +Created 1/16/1996 Heikki Tuuri +*******************************************************/ + +#include "data0type.h" + +#ifdef UNIV_NONINL +#include "data0type.ic" +#endif + +/********************************************************************** +This function is used to find the storage length in bytes of the first n +characters for prefix indexes using a multibyte character set. The function +finds charset information and returns length of prefix_len characters in the +index field in bytes. + +NOTE: the prototype of this function is copied from ha_innodb.cc! If you change +this function, you MUST change also the prototype here! */ +UNIV_INTERN +ulint +innobase_get_at_most_n_mbchars( +/*===========================*/ + /* out: number of bytes occupied by the first + n characters */ + ulint charset_id, /* in: character set id */ + ulint prefix_len, /* in: prefix length in bytes of the index + (this has to be divided by mbmaxlen to get the + number of CHARACTERS n in the prefix) */ + ulint data_len, /* in: length of the string in bytes */ + const char* str); /* in: character string */ + +/* At the database startup we store the default-charset collation number of +this MySQL installation to this global variable. If we have < 4.1.2 format +column definitions, or records in the insert buffer, we use this +charset-collation code for them. */ + +UNIV_INTERN ulint data_mysql_default_charset_coll; + +/************************************************************************* +Determine how many bytes the first n characters of the given string occupy. +If the string is shorter than n characters, returns the number of bytes +the characters in the string occupy. */ +UNIV_INTERN +ulint +dtype_get_at_most_n_mbchars( +/*========================*/ + /* out: length of the prefix, + in bytes */ + ulint prtype, /* in: precise type */ + ulint mbminlen, /* in: minimum length of a + multi-byte character */ + ulint mbmaxlen, /* in: maximum length of a + multi-byte character */ + ulint prefix_len, /* in: length of the requested + prefix, in characters, multiplied by + dtype_get_mbmaxlen(dtype) */ + ulint data_len, /* in: length of str (in bytes) */ + const char* str) /* in: the string whose prefix + length is being determined */ +{ +#ifndef UNIV_HOTBACKUP + ut_a(data_len != UNIV_SQL_NULL); + ut_ad(!mbmaxlen || !(prefix_len % mbmaxlen)); + + if (mbminlen != mbmaxlen) { + ut_a(!(prefix_len % mbmaxlen)); + return(innobase_get_at_most_n_mbchars( + dtype_get_charset_coll(prtype), + prefix_len, data_len, str)); + } + + if (prefix_len < data_len) { + + return(prefix_len); + + } + + return(data_len); +#else /* UNIV_HOTBACKUP */ + /* This function depends on MySQL code that is not included in + InnoDB Hot Backup builds. Besides, this function should never + be called in InnoDB Hot Backup. */ + ut_error; +#endif /* UNIV_HOTBACKUP */ +} + +/************************************************************************* +Checks if a data main type is a string type. Also a BLOB is considered a +string type. */ +UNIV_INTERN +ibool +dtype_is_string_type( +/*=================*/ + /* out: TRUE if string type */ + ulint mtype) /* in: InnoDB main data type code: DATA_CHAR, ... */ +{ + if (mtype <= DATA_BLOB + || mtype == DATA_MYSQL + || mtype == DATA_VARMYSQL) { + + return(TRUE); + } + + return(FALSE); +} + +/************************************************************************* +Checks if a type is a binary string type. Note that for tables created with +< 4.0.14, we do not know if a DATA_BLOB column is a BLOB or a TEXT column. For +those DATA_BLOB columns this function currently returns FALSE. */ +UNIV_INTERN +ibool +dtype_is_binary_string_type( +/*========================*/ + /* out: TRUE if binary string type */ + ulint mtype, /* in: main data type */ + ulint prtype) /* in: precise type */ +{ + if ((mtype == DATA_FIXBINARY) + || (mtype == DATA_BINARY) + || (mtype == DATA_BLOB && (prtype & DATA_BINARY_TYPE))) { + + return(TRUE); + } + + return(FALSE); +} + +/************************************************************************* +Checks if a type is a non-binary string type. That is, dtype_is_string_type is +TRUE and dtype_is_binary_string_type is FALSE. Note that for tables created +with < 4.0.14, we do not know if a DATA_BLOB column is a BLOB or a TEXT column. +For those DATA_BLOB columns this function currently returns TRUE. */ +UNIV_INTERN +ibool +dtype_is_non_binary_string_type( +/*============================*/ + /* out: TRUE if non-binary string type */ + ulint mtype, /* in: main data type */ + ulint prtype) /* in: precise type */ +{ + if (dtype_is_string_type(mtype) == TRUE + && dtype_is_binary_string_type(mtype, prtype) == FALSE) { + + return(TRUE); + } + + return(FALSE); +} + +/************************************************************************* +Forms a precise type from the < 4.1.2 format precise type plus the +charset-collation code. */ +UNIV_INTERN +ulint +dtype_form_prtype( +/*==============*/ + ulint old_prtype, /* in: the MySQL type code and the flags + DATA_BINARY_TYPE etc. */ + ulint charset_coll) /* in: MySQL charset-collation code */ +{ + ut_a(old_prtype < 256 * 256); + ut_a(charset_coll < 256); + + return(old_prtype + (charset_coll << 16)); +} + +/************************************************************************* +Validates a data type structure. */ +UNIV_INTERN +ibool +dtype_validate( +/*===========*/ + /* out: TRUE if ok */ + const dtype_t* type) /* in: type struct to validate */ +{ + ut_a(type); + ut_a(type->mtype >= DATA_VARCHAR); + ut_a(type->mtype <= DATA_MYSQL); + + if (type->mtype == DATA_SYS) { + ut_a((type->prtype & DATA_MYSQL_TYPE_MASK) < DATA_N_SYS_COLS); + } + + ut_a(type->mbminlen <= type->mbmaxlen); + + return(TRUE); +} + +/************************************************************************* +Prints a data type structure. */ +UNIV_INTERN +void +dtype_print( +/*========*/ + const dtype_t* type) /* in: type */ +{ + ulint mtype; + ulint prtype; + ulint len; + + ut_a(type); + + mtype = type->mtype; + prtype = type->prtype; + + switch (mtype) { + case DATA_VARCHAR: + fputs("DATA_VARCHAR", stderr); + break; + + case DATA_CHAR: + fputs("DATA_CHAR", stderr); + break; + + case DATA_BINARY: + fputs("DATA_BINARY", stderr); + break; + + case DATA_FIXBINARY: + fputs("DATA_FIXBINARY", stderr); + break; + + case DATA_BLOB: + fputs("DATA_BLOB", stderr); + break; + + case DATA_INT: + fputs("DATA_INT", stderr); + break; + + case DATA_MYSQL: + fputs("DATA_MYSQL", stderr); + break; + + case DATA_SYS: + fputs("DATA_SYS", stderr); + break; + + default: + fprintf(stderr, "type %lu", (ulong) mtype); + break; + } + + len = type->len; + + if ((type->mtype == DATA_SYS) + || (type->mtype == DATA_VARCHAR) + || (type->mtype == DATA_CHAR)) { + putc(' ', stderr); + if (prtype == DATA_ROW_ID) { + fputs("DATA_ROW_ID", stderr); + len = DATA_ROW_ID_LEN; + } else if (prtype == DATA_ROLL_PTR) { + fputs("DATA_ROLL_PTR", stderr); + len = DATA_ROLL_PTR_LEN; + } else if (prtype == DATA_TRX_ID) { + fputs("DATA_TRX_ID", stderr); + len = DATA_TRX_ID_LEN; + } else if (prtype == DATA_ENGLISH) { + fputs("DATA_ENGLISH", stderr); + } else { + fprintf(stderr, "prtype %lu", (ulong) prtype); + } + } else { + if (prtype & DATA_UNSIGNED) { + fputs(" DATA_UNSIGNED", stderr); + } + + if (prtype & DATA_BINARY_TYPE) { + fputs(" DATA_BINARY_TYPE", stderr); + } + + if (prtype & DATA_NOT_NULL) { + fputs(" DATA_NOT_NULL", stderr); + } + } + + fprintf(stderr, " len %lu", (ulong) len); +} === added directory 'storage/xtradb/dict' === added file 'storage/xtradb/dict/dict0boot.c' --- a/storage/xtradb/dict/dict0boot.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/dict/dict0boot.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,462 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Data dictionary creation and booting + +Created 4/18/1996 Heikki Tuuri +*******************************************************/ + +#include "dict0boot.h" + +#ifdef UNIV_NONINL +#include "dict0boot.ic" +#endif + +#include "dict0crea.h" +#include "btr0btr.h" +#include "dict0load.h" +#include "dict0load.h" +#include "trx0trx.h" +#include "srv0srv.h" +#include "ibuf0ibuf.h" +#include "buf0flu.h" +#include "log0recv.h" +#include "os0file.h" + +/************************************************************************** +Gets a pointer to the dictionary header and x-latches its page. */ +UNIV_INTERN +dict_hdr_t* +dict_hdr_get( +/*=========*/ + /* out: pointer to the dictionary header, + page x-latched */ + mtr_t* mtr) /* in: mtr */ +{ + buf_block_t* block; + dict_hdr_t* header; + + block = buf_page_get(DICT_HDR_SPACE, 0, DICT_HDR_PAGE_NO, + RW_X_LATCH, mtr); + header = DICT_HDR + buf_block_get_frame(block); + + buf_block_dbg_add_level(block, SYNC_DICT_HEADER); + + return(header); +} + +/************************************************************************** +Returns a new table, index, or tree id. */ +UNIV_INTERN +dulint +dict_hdr_get_new_id( +/*================*/ + /* out: the new id */ + ulint type) /* in: DICT_HDR_ROW_ID, ... */ +{ + dict_hdr_t* dict_hdr; + dulint id; + mtr_t mtr; + + ut_ad((type == DICT_HDR_TABLE_ID) || (type == DICT_HDR_INDEX_ID)); + + mtr_start(&mtr); + + dict_hdr = dict_hdr_get(&mtr); + + id = mtr_read_dulint(dict_hdr + type, &mtr); + id = ut_dulint_add(id, 1); + + mlog_write_dulint(dict_hdr + type, id, &mtr); + + mtr_commit(&mtr); + + return(id); +} + +/************************************************************************** +Writes the current value of the row id counter to the dictionary header file +page. */ +UNIV_INTERN +void +dict_hdr_flush_row_id(void) +/*=======================*/ +{ + dict_hdr_t* dict_hdr; + dulint id; + mtr_t mtr; + + ut_ad(mutex_own(&(dict_sys->mutex))); + + id = dict_sys->row_id; + + mtr_start(&mtr); + + dict_hdr = dict_hdr_get(&mtr); + + mlog_write_dulint(dict_hdr + DICT_HDR_ROW_ID, id, &mtr); + + mtr_commit(&mtr); +} + +/********************************************************************* +Creates the file page for the dictionary header. This function is +called only at the database creation. */ +static +ibool +dict_hdr_create( +/*============*/ + /* out: TRUE if succeed */ + mtr_t* mtr) /* in: mtr */ +{ + buf_block_t* block; + dict_hdr_t* dict_header; + ulint root_page_no; + + ut_ad(mtr); + + /* Create the dictionary header file block in a new, allocated file + segment in the system tablespace */ + block = fseg_create(DICT_HDR_SPACE, 0, + DICT_HDR + DICT_HDR_FSEG_HEADER, mtr); + + ut_a(DICT_HDR_PAGE_NO == buf_block_get_page_no(block)); + + dict_header = dict_hdr_get(mtr); + + /* Start counting row, table, index, and tree ids from + DICT_HDR_FIRST_ID */ + mlog_write_dulint(dict_header + DICT_HDR_ROW_ID, + ut_dulint_create(0, DICT_HDR_FIRST_ID), mtr); + + mlog_write_dulint(dict_header + DICT_HDR_TABLE_ID, + ut_dulint_create(0, DICT_HDR_FIRST_ID), mtr); + + mlog_write_dulint(dict_header + DICT_HDR_INDEX_ID, + ut_dulint_create(0, DICT_HDR_FIRST_ID), mtr); + + /* Obsolete, but we must initialize it to 0 anyway. */ + mlog_write_dulint(dict_header + DICT_HDR_MIX_ID, + ut_dulint_create(0, DICT_HDR_FIRST_ID), mtr); + + /* Create the B-tree roots for the clustered indexes of the basic + system tables */ + + /*--------------------------*/ + root_page_no = btr_create(DICT_CLUSTERED | DICT_UNIQUE, + DICT_HDR_SPACE, 0, DICT_TABLES_ID, + srv_sys->dummy_ind1, mtr); + if (root_page_no == FIL_NULL) { + + return(FALSE); + } + + mlog_write_ulint(dict_header + DICT_HDR_TABLES, root_page_no, + MLOG_4BYTES, mtr); + /*--------------------------*/ + root_page_no = btr_create(DICT_UNIQUE, DICT_HDR_SPACE, 0, + DICT_TABLE_IDS_ID, + srv_sys->dummy_ind1, mtr); + if (root_page_no == FIL_NULL) { + + return(FALSE); + } + + mlog_write_ulint(dict_header + DICT_HDR_TABLE_IDS, root_page_no, + MLOG_4BYTES, mtr); + /*--------------------------*/ + root_page_no = btr_create(DICT_CLUSTERED | DICT_UNIQUE, + DICT_HDR_SPACE, 0, DICT_COLUMNS_ID, + srv_sys->dummy_ind1, mtr); + if (root_page_no == FIL_NULL) { + + return(FALSE); + } + + mlog_write_ulint(dict_header + DICT_HDR_COLUMNS, root_page_no, + MLOG_4BYTES, mtr); + /*--------------------------*/ + root_page_no = btr_create(DICT_CLUSTERED | DICT_UNIQUE, + DICT_HDR_SPACE, 0, DICT_INDEXES_ID, + srv_sys->dummy_ind1, mtr); + if (root_page_no == FIL_NULL) { + + return(FALSE); + } + + mlog_write_ulint(dict_header + DICT_HDR_INDEXES, root_page_no, + MLOG_4BYTES, mtr); + /*--------------------------*/ + root_page_no = btr_create(DICT_CLUSTERED | DICT_UNIQUE, + DICT_HDR_SPACE, 0, DICT_FIELDS_ID, + srv_sys->dummy_ind1, mtr); + if (root_page_no == FIL_NULL) { + + return(FALSE); + } + + mlog_write_ulint(dict_header + DICT_HDR_FIELDS, root_page_no, + MLOG_4BYTES, mtr); + /*--------------------------*/ + + return(TRUE); +} + +/********************************************************************* +Initializes the data dictionary memory structures when the database is +started. This function is also called when the data dictionary is created. */ +UNIV_INTERN +void +dict_boot(void) +/*===========*/ +{ + dict_table_t* table; + dict_index_t* index; + dict_hdr_t* dict_hdr; + mem_heap_t* heap; + mtr_t mtr; + ulint error; + + mtr_start(&mtr); + + /* Create the hash tables etc. */ + dict_init(); + + heap = mem_heap_create(450); + + mutex_enter(&(dict_sys->mutex)); + + /* Get the dictionary header */ + dict_hdr = dict_hdr_get(&mtr); + + /* Because we only write new row ids to disk-based data structure + (dictionary header) when it is divisible by + DICT_HDR_ROW_ID_WRITE_MARGIN, in recovery we will not recover + the latest value of the row id counter. Therefore we advance + the counter at the database startup to avoid overlapping values. + Note that when a user after database startup first time asks for + a new row id, then because the counter is now divisible by + ..._MARGIN, it will immediately be updated to the disk-based + header. */ + + dict_sys->row_id = ut_dulint_add( + ut_dulint_align_up(mtr_read_dulint(dict_hdr + DICT_HDR_ROW_ID, + &mtr), + DICT_HDR_ROW_ID_WRITE_MARGIN), + DICT_HDR_ROW_ID_WRITE_MARGIN); + + /* Insert into the dictionary cache the descriptions of the basic + system tables */ + /*-------------------------*/ + table = dict_mem_table_create("SYS_TABLES", DICT_HDR_SPACE, 8, 0); + + dict_mem_table_add_col(table, heap, "NAME", DATA_BINARY, 0, 0); + dict_mem_table_add_col(table, heap, "ID", DATA_BINARY, 0, 0); + /* ROW_FORMAT = (N_COLS >> 31) ? COMPACT : REDUNDANT */ + dict_mem_table_add_col(table, heap, "N_COLS", DATA_INT, 0, 4); + /* TYPE is either DICT_TABLE_ORDINARY, or (TYPE & DICT_TF_COMPACT) + and (TYPE & DICT_TF_FORMAT_MASK) are nonzero and TYPE = table->flags */ + dict_mem_table_add_col(table, heap, "TYPE", DATA_INT, 0, 4); + dict_mem_table_add_col(table, heap, "MIX_ID", DATA_BINARY, 0, 0); + dict_mem_table_add_col(table, heap, "MIX_LEN", DATA_INT, 0, 4); + dict_mem_table_add_col(table, heap, "CLUSTER_NAME", DATA_BINARY, 0, 0); + dict_mem_table_add_col(table, heap, "SPACE", DATA_INT, 0, 4); + + table->id = DICT_TABLES_ID; + + dict_table_add_to_cache(table, heap); + dict_sys->sys_tables = table; + mem_heap_empty(heap); + + index = dict_mem_index_create("SYS_TABLES", "CLUST_IND", + DICT_HDR_SPACE, + DICT_UNIQUE | DICT_CLUSTERED, 1); + + dict_mem_index_add_field(index, "NAME", 0); + + index->id = DICT_TABLES_ID; + + error = dict_index_add_to_cache(table, index, + mtr_read_ulint(dict_hdr + + DICT_HDR_TABLES, + MLOG_4BYTES, &mtr), + FALSE); + ut_a(error == DB_SUCCESS); + + /*-------------------------*/ + index = dict_mem_index_create("SYS_TABLES", "ID_IND", + DICT_HDR_SPACE, DICT_UNIQUE, 1); + dict_mem_index_add_field(index, "ID", 0); + + index->id = DICT_TABLE_IDS_ID; + error = dict_index_add_to_cache(table, index, + mtr_read_ulint(dict_hdr + + DICT_HDR_TABLE_IDS, + MLOG_4BYTES, &mtr), + FALSE); + ut_a(error == DB_SUCCESS); + + /*-------------------------*/ + table = dict_mem_table_create("SYS_COLUMNS", DICT_HDR_SPACE, 7, 0); + + dict_mem_table_add_col(table, heap, "TABLE_ID", DATA_BINARY, 0, 0); + dict_mem_table_add_col(table, heap, "POS", DATA_INT, 0, 4); + dict_mem_table_add_col(table, heap, "NAME", DATA_BINARY, 0, 0); + dict_mem_table_add_col(table, heap, "MTYPE", DATA_INT, 0, 4); + dict_mem_table_add_col(table, heap, "PRTYPE", DATA_INT, 0, 4); + dict_mem_table_add_col(table, heap, "LEN", DATA_INT, 0, 4); + dict_mem_table_add_col(table, heap, "PREC", DATA_INT, 0, 4); + + table->id = DICT_COLUMNS_ID; + + dict_table_add_to_cache(table, heap); + dict_sys->sys_columns = table; + mem_heap_empty(heap); + + index = dict_mem_index_create("SYS_COLUMNS", "CLUST_IND", + DICT_HDR_SPACE, + DICT_UNIQUE | DICT_CLUSTERED, 2); + + dict_mem_index_add_field(index, "TABLE_ID", 0); + dict_mem_index_add_field(index, "POS", 0); + + index->id = DICT_COLUMNS_ID; + error = dict_index_add_to_cache(table, index, + mtr_read_ulint(dict_hdr + + DICT_HDR_COLUMNS, + MLOG_4BYTES, &mtr), + FALSE); + ut_a(error == DB_SUCCESS); + + /*-------------------------*/ + table = dict_mem_table_create("SYS_INDEXES", DICT_HDR_SPACE, 7, 0); + + dict_mem_table_add_col(table, heap, "TABLE_ID", DATA_BINARY, 0, 0); + dict_mem_table_add_col(table, heap, "ID", DATA_BINARY, 0, 0); + dict_mem_table_add_col(table, heap, "NAME", DATA_BINARY, 0, 0); + dict_mem_table_add_col(table, heap, "N_FIELDS", DATA_INT, 0, 4); + dict_mem_table_add_col(table, heap, "TYPE", DATA_INT, 0, 4); + dict_mem_table_add_col(table, heap, "SPACE", DATA_INT, 0, 4); + dict_mem_table_add_col(table, heap, "PAGE_NO", DATA_INT, 0, 4); + + /* The '+ 2' below comes from the 2 system fields */ +#if DICT_SYS_INDEXES_PAGE_NO_FIELD != 6 + 2 +#error "DICT_SYS_INDEXES_PAGE_NO_FIELD != 6 + 2" +#endif +#if DICT_SYS_INDEXES_SPACE_NO_FIELD != 5 + 2 +#error "DICT_SYS_INDEXES_SPACE_NO_FIELD != 5 + 2" +#endif +#if DICT_SYS_INDEXES_TYPE_FIELD != 4 + 2 +#error "DICT_SYS_INDEXES_TYPE_FIELD != 4 + 2" +#endif + + table->id = DICT_INDEXES_ID; + dict_table_add_to_cache(table, heap); + dict_sys->sys_indexes = table; + mem_heap_empty(heap); + + index = dict_mem_index_create("SYS_INDEXES", "CLUST_IND", + DICT_HDR_SPACE, + DICT_UNIQUE | DICT_CLUSTERED, 2); + + dict_mem_index_add_field(index, "TABLE_ID", 0); + dict_mem_index_add_field(index, "ID", 0); + + index->id = DICT_INDEXES_ID; + error = dict_index_add_to_cache(table, index, + mtr_read_ulint(dict_hdr + + DICT_HDR_INDEXES, + MLOG_4BYTES, &mtr), + FALSE); + ut_a(error == DB_SUCCESS); + + /*-------------------------*/ + table = dict_mem_table_create("SYS_FIELDS", DICT_HDR_SPACE, 3, 0); + + dict_mem_table_add_col(table, heap, "INDEX_ID", DATA_BINARY, 0, 0); + dict_mem_table_add_col(table, heap, "POS", DATA_INT, 0, 4); + dict_mem_table_add_col(table, heap, "COL_NAME", DATA_BINARY, 0, 0); + + table->id = DICT_FIELDS_ID; + dict_table_add_to_cache(table, heap); + dict_sys->sys_fields = table; + mem_heap_free(heap); + + index = dict_mem_index_create("SYS_FIELDS", "CLUST_IND", + DICT_HDR_SPACE, + DICT_UNIQUE | DICT_CLUSTERED, 2); + + dict_mem_index_add_field(index, "INDEX_ID", 0); + dict_mem_index_add_field(index, "POS", 0); + + index->id = DICT_FIELDS_ID; + error = dict_index_add_to_cache(table, index, + mtr_read_ulint(dict_hdr + + DICT_HDR_FIELDS, + MLOG_4BYTES, &mtr), + FALSE); + ut_a(error == DB_SUCCESS); + + mtr_commit(&mtr); + /*-------------------------*/ + + /* Initialize the insert buffer table and index for each tablespace */ + + ibuf_init_at_db_start(); + + /* Load definitions of other indexes on system tables */ + + dict_load_sys_table(dict_sys->sys_tables); + dict_load_sys_table(dict_sys->sys_columns); + dict_load_sys_table(dict_sys->sys_indexes); + dict_load_sys_table(dict_sys->sys_fields); + + mutex_exit(&(dict_sys->mutex)); +} + +/********************************************************************* +Inserts the basic system table data into themselves in the database +creation. */ +static +void +dict_insert_initial_data(void) +/*==========================*/ +{ + /* Does nothing yet */ +} + +/********************************************************************* +Creates and initializes the data dictionary at the database creation. */ +UNIV_INTERN +void +dict_create(void) +/*=============*/ +{ + mtr_t mtr; + + mtr_start(&mtr); + + dict_hdr_create(&mtr); + + mtr_commit(&mtr); + + dict_boot(); + + dict_insert_initial_data(); +} === added file 'storage/xtradb/dict/dict0crea.c' --- a/storage/xtradb/dict/dict0crea.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/dict/dict0crea.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,1503 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Database object creation + +Created 1/8/1996 Heikki Tuuri +*******************************************************/ + +#include "dict0crea.h" + +#ifdef UNIV_NONINL +#include "dict0crea.ic" +#endif + +#include "btr0pcur.h" +#include "btr0btr.h" +#include "page0page.h" +#include "mach0data.h" +#include "dict0boot.h" +#include "dict0dict.h" +#include "que0que.h" +#include "row0ins.h" +#include "row0mysql.h" +#include "pars0pars.h" +#include "trx0roll.h" +#include "usr0sess.h" +#include "ut0vec.h" + +/********************************************************************* +Based on a table object, this function builds the entry to be inserted +in the SYS_TABLES system table. */ +static +dtuple_t* +dict_create_sys_tables_tuple( +/*=========================*/ + /* out: the tuple which should be inserted */ + dict_table_t* table, /* in: table */ + mem_heap_t* heap) /* in: memory heap from which the memory for + the built tuple is allocated */ +{ + dict_table_t* sys_tables; + dtuple_t* entry; + dfield_t* dfield; + byte* ptr; + + ut_ad(table && heap); + + sys_tables = dict_sys->sys_tables; + + entry = dtuple_create(heap, 8 + DATA_N_SYS_COLS); + + dict_table_copy_types(entry, sys_tables); + + /* 0: NAME -----------------------------*/ + dfield = dtuple_get_nth_field(entry, 0); + + dfield_set_data(dfield, table->name, ut_strlen(table->name)); + /* 3: ID -------------------------------*/ + dfield = dtuple_get_nth_field(entry, 1); + + ptr = mem_heap_alloc(heap, 8); + mach_write_to_8(ptr, table->id); + + dfield_set_data(dfield, ptr, 8); + /* 4: N_COLS ---------------------------*/ + dfield = dtuple_get_nth_field(entry, 2); + +#if DICT_TF_COMPACT != 1 +#error +#endif + + ptr = mem_heap_alloc(heap, 4); + mach_write_to_4(ptr, table->n_def + | ((table->flags & DICT_TF_COMPACT) << 31)); + dfield_set_data(dfield, ptr, 4); + /* 5: TYPE -----------------------------*/ + dfield = dtuple_get_nth_field(entry, 3); + + ptr = mem_heap_alloc(heap, 4); + if (table->flags & ~DICT_TF_COMPACT) { + ut_a(table->flags & DICT_TF_COMPACT); + ut_a(dict_table_get_format(table) >= DICT_TF_FORMAT_ZIP); + ut_a((table->flags & DICT_TF_ZSSIZE_MASK) + <= (DICT_TF_ZSSIZE_MAX << DICT_TF_ZSSIZE_SHIFT)); + ut_a(!(table->flags & (~0 << DICT_TF_BITS))); + mach_write_to_4(ptr, table->flags); + } else { + mach_write_to_4(ptr, DICT_TABLE_ORDINARY); + } + + dfield_set_data(dfield, ptr, 4); + /* 6: MIX_ID (obsolete) ---------------------------*/ + dfield = dtuple_get_nth_field(entry, 4); + + ptr = mem_heap_zalloc(heap, 8); + + dfield_set_data(dfield, ptr, 8); + /* 7: MIX_LEN (obsolete) --------------------------*/ + + dfield = dtuple_get_nth_field(entry, 5); + + ptr = mem_heap_zalloc(heap, 4); + + dfield_set_data(dfield, ptr, 4); + /* 8: CLUSTER_NAME ---------------------*/ + dfield = dtuple_get_nth_field(entry, 6); + dfield_set_null(dfield); /* not supported */ + + /* 9: SPACE ----------------------------*/ + dfield = dtuple_get_nth_field(entry, 7); + + ptr = mem_heap_alloc(heap, 4); + mach_write_to_4(ptr, table->space); + + dfield_set_data(dfield, ptr, 4); + /*----------------------------------*/ + + return(entry); +} + +/********************************************************************* +Based on a table object, this function builds the entry to be inserted +in the SYS_COLUMNS system table. */ +static +dtuple_t* +dict_create_sys_columns_tuple( +/*==========================*/ + /* out: the tuple which should be inserted */ + dict_table_t* table, /* in: table */ + ulint i, /* in: column number */ + mem_heap_t* heap) /* in: memory heap from which the memory for + the built tuple is allocated */ +{ + dict_table_t* sys_columns; + dtuple_t* entry; + const dict_col_t* column; + dfield_t* dfield; + byte* ptr; + const char* col_name; + + ut_ad(table && heap); + + column = dict_table_get_nth_col(table, i); + + sys_columns = dict_sys->sys_columns; + + entry = dtuple_create(heap, 7 + DATA_N_SYS_COLS); + + dict_table_copy_types(entry, sys_columns); + + /* 0: TABLE_ID -----------------------*/ + dfield = dtuple_get_nth_field(entry, 0); + + ptr = mem_heap_alloc(heap, 8); + mach_write_to_8(ptr, table->id); + + dfield_set_data(dfield, ptr, 8); + /* 1: POS ----------------------------*/ + dfield = dtuple_get_nth_field(entry, 1); + + ptr = mem_heap_alloc(heap, 4); + mach_write_to_4(ptr, i); + + dfield_set_data(dfield, ptr, 4); + /* 4: NAME ---------------------------*/ + dfield = dtuple_get_nth_field(entry, 2); + + col_name = dict_table_get_col_name(table, i); + dfield_set_data(dfield, col_name, ut_strlen(col_name)); + /* 5: MTYPE --------------------------*/ + dfield = dtuple_get_nth_field(entry, 3); + + ptr = mem_heap_alloc(heap, 4); + mach_write_to_4(ptr, column->mtype); + + dfield_set_data(dfield, ptr, 4); + /* 6: PRTYPE -------------------------*/ + dfield = dtuple_get_nth_field(entry, 4); + + ptr = mem_heap_alloc(heap, 4); + mach_write_to_4(ptr, column->prtype); + + dfield_set_data(dfield, ptr, 4); + /* 7: LEN ----------------------------*/ + dfield = dtuple_get_nth_field(entry, 5); + + ptr = mem_heap_alloc(heap, 4); + mach_write_to_4(ptr, column->len); + + dfield_set_data(dfield, ptr, 4); + /* 8: PREC ---------------------------*/ + dfield = dtuple_get_nth_field(entry, 6); + + ptr = mem_heap_alloc(heap, 4); + mach_write_to_4(ptr, 0/* unused */); + + dfield_set_data(dfield, ptr, 4); + /*---------------------------------*/ + + return(entry); +} + +/******************************************************************* +Builds a table definition to insert. */ +static +ulint +dict_build_table_def_step( +/*======================*/ + /* out: DB_SUCCESS or error code */ + que_thr_t* thr, /* in: query thread */ + tab_node_t* node) /* in: table create node */ +{ + dict_table_t* table; + dtuple_t* row; + ulint error; + const char* path_or_name; + ibool is_path; + mtr_t mtr; + + ut_ad(mutex_own(&(dict_sys->mutex))); + + table = node->table; + + table->id = dict_hdr_get_new_id(DICT_HDR_TABLE_ID); + + thr_get_trx(thr)->table_id = table->id; + + if (srv_file_per_table) { + /* We create a new single-table tablespace for the table. + We initially let it be 4 pages: + - page 0 is the fsp header and an extent descriptor page, + - page 1 is an ibuf bitmap page, + - page 2 is the first inode page, + - page 3 will contain the root of the clustered index of the + table we create here. */ + + ulint space = 0; /* reset to zero for the call below */ + + if (table->dir_path_of_temp_table) { + /* We place tables created with CREATE TEMPORARY + TABLE in the tmp dir of mysqld server */ + + path_or_name = table->dir_path_of_temp_table; + is_path = TRUE; + } else { + path_or_name = table->name; + is_path = FALSE; + } + + ut_ad(dict_table_get_format(table) <= DICT_TF_FORMAT_MAX); + ut_ad(!dict_table_zip_size(table) + || dict_table_get_format(table) >= DICT_TF_FORMAT_ZIP); + + error = fil_create_new_single_table_tablespace( + &space, path_or_name, is_path, + table->flags == DICT_TF_COMPACT ? 0 : table->flags, + FIL_IBD_FILE_INITIAL_SIZE); + table->space = (unsigned int) space; + + if (error != DB_SUCCESS) { + + return(error); + } + + mtr_start(&mtr); + + fsp_header_init(table->space, FIL_IBD_FILE_INITIAL_SIZE, &mtr); + + mtr_commit(&mtr); + } else { + /* Create in the system tablespace: disallow new features */ + table->flags &= DICT_TF_COMPACT; + } + + row = dict_create_sys_tables_tuple(table, node->heap); + + ins_node_set_new_row(node->tab_def, row); + + return(DB_SUCCESS); +} + +/******************************************************************* +Builds a column definition to insert. */ +static +ulint +dict_build_col_def_step( +/*====================*/ + /* out: DB_SUCCESS */ + tab_node_t* node) /* in: table create node */ +{ + dtuple_t* row; + + row = dict_create_sys_columns_tuple(node->table, node->col_no, + node->heap); + ins_node_set_new_row(node->col_def, row); + + return(DB_SUCCESS); +} + +/********************************************************************* +Based on an index object, this function builds the entry to be inserted +in the SYS_INDEXES system table. */ +static +dtuple_t* +dict_create_sys_indexes_tuple( +/*==========================*/ + /* out: the tuple which should be inserted */ + dict_index_t* index, /* in: index */ + mem_heap_t* heap) /* in: memory heap from which the memory for + the built tuple is allocated */ +{ + dict_table_t* sys_indexes; + dict_table_t* table; + dtuple_t* entry; + dfield_t* dfield; + byte* ptr; + + ut_ad(mutex_own(&(dict_sys->mutex))); + ut_ad(index && heap); + + sys_indexes = dict_sys->sys_indexes; + + table = dict_table_get_low(index->table_name); + + entry = dtuple_create(heap, 7 + DATA_N_SYS_COLS); + + dict_table_copy_types(entry, sys_indexes); + + /* 0: TABLE_ID -----------------------*/ + dfield = dtuple_get_nth_field(entry, 0); + + ptr = mem_heap_alloc(heap, 8); + mach_write_to_8(ptr, table->id); + + dfield_set_data(dfield, ptr, 8); + /* 1: ID ----------------------------*/ + dfield = dtuple_get_nth_field(entry, 1); + + ptr = mem_heap_alloc(heap, 8); + mach_write_to_8(ptr, index->id); + + dfield_set_data(dfield, ptr, 8); + /* 4: NAME --------------------------*/ + dfield = dtuple_get_nth_field(entry, 2); + + dfield_set_data(dfield, index->name, ut_strlen(index->name)); + /* 5: N_FIELDS ----------------------*/ + dfield = dtuple_get_nth_field(entry, 3); + + ptr = mem_heap_alloc(heap, 4); + mach_write_to_4(ptr, index->n_fields); + + dfield_set_data(dfield, ptr, 4); + /* 6: TYPE --------------------------*/ + dfield = dtuple_get_nth_field(entry, 4); + + ptr = mem_heap_alloc(heap, 4); + mach_write_to_4(ptr, index->type); + + dfield_set_data(dfield, ptr, 4); + /* 7: SPACE --------------------------*/ + +#if DICT_SYS_INDEXES_SPACE_NO_FIELD != 7 +#error "DICT_SYS_INDEXES_SPACE_NO_FIELD != 7" +#endif + + dfield = dtuple_get_nth_field(entry, 5); + + ptr = mem_heap_alloc(heap, 4); + mach_write_to_4(ptr, index->space); + + dfield_set_data(dfield, ptr, 4); + /* 8: PAGE_NO --------------------------*/ + +#if DICT_SYS_INDEXES_PAGE_NO_FIELD != 8 +#error "DICT_SYS_INDEXES_PAGE_NO_FIELD != 8" +#endif + + dfield = dtuple_get_nth_field(entry, 6); + + ptr = mem_heap_alloc(heap, 4); + mach_write_to_4(ptr, FIL_NULL); + + dfield_set_data(dfield, ptr, 4); + /*--------------------------------*/ + + return(entry); +} + +/********************************************************************* +Based on an index object, this function builds the entry to be inserted +in the SYS_FIELDS system table. */ +static +dtuple_t* +dict_create_sys_fields_tuple( +/*=========================*/ + /* out: the tuple which should be inserted */ + dict_index_t* index, /* in: index */ + ulint i, /* in: field number */ + mem_heap_t* heap) /* in: memory heap from which the memory for + the built tuple is allocated */ +{ + dict_table_t* sys_fields; + dtuple_t* entry; + dict_field_t* field; + dfield_t* dfield; + byte* ptr; + ibool index_contains_column_prefix_field = FALSE; + ulint j; + + ut_ad(index && heap); + + for (j = 0; j < index->n_fields; j++) { + if (dict_index_get_nth_field(index, j)->prefix_len > 0) { + index_contains_column_prefix_field = TRUE; + break; + } + } + + field = dict_index_get_nth_field(index, i); + + sys_fields = dict_sys->sys_fields; + + entry = dtuple_create(heap, 3 + DATA_N_SYS_COLS); + + dict_table_copy_types(entry, sys_fields); + + /* 0: INDEX_ID -----------------------*/ + dfield = dtuple_get_nth_field(entry, 0); + + ptr = mem_heap_alloc(heap, 8); + mach_write_to_8(ptr, index->id); + + dfield_set_data(dfield, ptr, 8); + /* 1: POS + PREFIX LENGTH ----------------------------*/ + + dfield = dtuple_get_nth_field(entry, 1); + + ptr = mem_heap_alloc(heap, 4); + + if (index_contains_column_prefix_field) { + /* If there are column prefix fields in the index, then + we store the number of the field to the 2 HIGH bytes + and the prefix length to the 2 low bytes, */ + + mach_write_to_4(ptr, (i << 16) + field->prefix_len); + } else { + /* Else we store the number of the field to the 2 LOW bytes. + This is to keep the storage format compatible with + InnoDB versions < 4.0.14. */ + + mach_write_to_4(ptr, i); + } + + dfield_set_data(dfield, ptr, 4); + /* 4: COL_NAME -------------------------*/ + dfield = dtuple_get_nth_field(entry, 2); + + dfield_set_data(dfield, field->name, + ut_strlen(field->name)); + /*---------------------------------*/ + + return(entry); +} + +/********************************************************************* +Creates the tuple with which the index entry is searched for writing the index +tree root page number, if such a tree is created. */ +static +dtuple_t* +dict_create_search_tuple( +/*=====================*/ + /* out: the tuple for search */ + const dtuple_t* tuple, /* in: the tuple inserted in the SYS_INDEXES + table */ + mem_heap_t* heap) /* in: memory heap from which the memory for + the built tuple is allocated */ +{ + dtuple_t* search_tuple; + const dfield_t* field1; + dfield_t* field2; + + ut_ad(tuple && heap); + + search_tuple = dtuple_create(heap, 2); + + field1 = dtuple_get_nth_field(tuple, 0); + field2 = dtuple_get_nth_field(search_tuple, 0); + + dfield_copy(field2, field1); + + field1 = dtuple_get_nth_field(tuple, 1); + field2 = dtuple_get_nth_field(search_tuple, 1); + + dfield_copy(field2, field1); + + ut_ad(dtuple_validate(search_tuple)); + + return(search_tuple); +} + +/******************************************************************* +Builds an index definition row to insert. */ +static +ulint +dict_build_index_def_step( +/*======================*/ + /* out: DB_SUCCESS or error code */ + que_thr_t* thr, /* in: query thread */ + ind_node_t* node) /* in: index create node */ +{ + dict_table_t* table; + dict_index_t* index; + dtuple_t* row; + trx_t* trx; + + ut_ad(mutex_own(&(dict_sys->mutex))); + + trx = thr_get_trx(thr); + + index = node->index; + + table = dict_table_get_low(index->table_name); + + if (table == NULL) { + return(DB_TABLE_NOT_FOUND); + } + + trx->table_id = table->id; + + node->table = table; + + ut_ad((UT_LIST_GET_LEN(table->indexes) > 0) + || dict_index_is_clust(index)); + + index->id = dict_hdr_get_new_id(DICT_HDR_INDEX_ID); + + /* Inherit the space id from the table; we store all indexes of a + table in the same tablespace */ + + index->space = table->space; + node->page_no = FIL_NULL; + row = dict_create_sys_indexes_tuple(index, node->heap); + node->ind_row = row; + + ins_node_set_new_row(node->ind_def, row); + +#ifdef ROW_MERGE_IS_INDEX_USABLE + /* Note that the index was created by this transaction. */ + index->trx_id = trx->id; +#endif /* ROW_MERGE_IS_INDEX_USABLE */ + + return(DB_SUCCESS); +} + +/******************************************************************* +Builds a field definition row to insert. */ +static +ulint +dict_build_field_def_step( +/*======================*/ + /* out: DB_SUCCESS */ + ind_node_t* node) /* in: index create node */ +{ + dict_index_t* index; + dtuple_t* row; + + index = node->index; + + row = dict_create_sys_fields_tuple(index, node->field_no, node->heap); + + ins_node_set_new_row(node->field_def, row); + + return(DB_SUCCESS); +} + +/******************************************************************* +Creates an index tree for the index if it is not a member of a cluster. */ +static +ulint +dict_create_index_tree_step( +/*========================*/ + /* out: DB_SUCCESS or DB_OUT_OF_FILE_SPACE */ + ind_node_t* node) /* in: index create node */ +{ + dict_index_t* index; + dict_table_t* sys_indexes; + dict_table_t* table; + dtuple_t* search_tuple; + btr_pcur_t pcur; + mtr_t mtr; + + ut_ad(mutex_own(&(dict_sys->mutex))); + + index = node->index; + table = node->table; + + sys_indexes = dict_sys->sys_indexes; + + /* Run a mini-transaction in which the index tree is allocated for + the index and its root address is written to the index entry in + sys_indexes */ + + mtr_start(&mtr); + + search_tuple = dict_create_search_tuple(node->ind_row, node->heap); + + btr_pcur_open(UT_LIST_GET_FIRST(sys_indexes->indexes), + search_tuple, PAGE_CUR_L, BTR_MODIFY_LEAF, + &pcur, &mtr); + + btr_pcur_move_to_next_user_rec(&pcur, &mtr); + + node->page_no = btr_create(index->type, index->space, + dict_table_zip_size(index->table), + index->id, index, &mtr); + /* printf("Created a new index tree in space %lu root page %lu\n", + index->space, index->page_no); */ + + page_rec_write_index_page_no(btr_pcur_get_rec(&pcur), + DICT_SYS_INDEXES_PAGE_NO_FIELD, + node->page_no, &mtr); + btr_pcur_close(&pcur); + mtr_commit(&mtr); + + if (node->page_no == FIL_NULL) { + + return(DB_OUT_OF_FILE_SPACE); + } + + return(DB_SUCCESS); +} + +/*********************************************************************** +Drops the index tree associated with a row in SYS_INDEXES table. */ +UNIV_INTERN +void +dict_drop_index_tree( +/*=================*/ + rec_t* rec, /* in/out: record in the clustered index + of SYS_INDEXES table */ + mtr_t* mtr) /* in: mtr having the latch on the record page */ +{ + ulint root_page_no; + ulint space; + ulint zip_size; + const byte* ptr; + ulint len; + + ut_ad(mutex_own(&(dict_sys->mutex))); + ut_a(!dict_table_is_comp(dict_sys->sys_indexes)); + ptr = rec_get_nth_field_old(rec, DICT_SYS_INDEXES_PAGE_NO_FIELD, &len); + + ut_ad(len == 4); + + root_page_no = mtr_read_ulint(ptr, MLOG_4BYTES, mtr); + + if (root_page_no == FIL_NULL) { + /* The tree has already been freed */ + + return; + } + + ptr = rec_get_nth_field_old(rec, + DICT_SYS_INDEXES_SPACE_NO_FIELD, &len); + + ut_ad(len == 4); + + space = mtr_read_ulint(ptr, MLOG_4BYTES, mtr); + zip_size = fil_space_get_zip_size(space); + + if (UNIV_UNLIKELY(zip_size == ULINT_UNDEFINED)) { + /* It is a single table tablespace and the .ibd file is + missing: do nothing */ + + return; + } + + /* We free all the pages but the root page first; this operation + may span several mini-transactions */ + + btr_free_but_not_root(space, zip_size, root_page_no); + + /* Then we free the root page in the same mini-transaction where + we write FIL_NULL to the appropriate field in the SYS_INDEXES + record: this mini-transaction marks the B-tree totally freed */ + + /* printf("Dropping index tree in space %lu root page %lu\n", space, + root_page_no); */ + btr_free_root(space, zip_size, root_page_no, mtr); + + page_rec_write_index_page_no(rec, + DICT_SYS_INDEXES_PAGE_NO_FIELD, + FIL_NULL, mtr); +} + +/*********************************************************************** +Truncates the index tree associated with a row in SYS_INDEXES table. */ +UNIV_INTERN +ulint +dict_truncate_index_tree( +/*=====================*/ + /* out: new root page number, or + FIL_NULL on failure */ + dict_table_t* table, /* in: the table the index belongs to */ + ulint space, /* in: 0=truncate, + nonzero=create the index tree in the + given tablespace */ + btr_pcur_t* pcur, /* in/out: persistent cursor pointing to + record in the clustered index of + SYS_INDEXES table. The cursor may be + repositioned in this call. */ + mtr_t* mtr) /* in: mtr having the latch + on the record page. The mtr may be + committed and restarted in this call. */ +{ + ulint root_page_no; + ibool drop = !space; + ulint zip_size; + ulint type; + dulint index_id; + rec_t* rec; + const byte* ptr; + ulint len; + dict_index_t* index; + + ut_ad(mutex_own(&(dict_sys->mutex))); + ut_a(!dict_table_is_comp(dict_sys->sys_indexes)); + rec = btr_pcur_get_rec(pcur); + ptr = rec_get_nth_field_old(rec, DICT_SYS_INDEXES_PAGE_NO_FIELD, &len); + + ut_ad(len == 4); + + root_page_no = mtr_read_ulint(ptr, MLOG_4BYTES, mtr); + + if (drop && root_page_no == FIL_NULL) { + /* The tree has been freed. */ + + ut_print_timestamp(stderr); + fprintf(stderr, " InnoDB: Trying to TRUNCATE" + " a missing index of table %s!\n", table->name); + drop = FALSE; + } + + ptr = rec_get_nth_field_old(rec, + DICT_SYS_INDEXES_SPACE_NO_FIELD, &len); + + ut_ad(len == 4); + + if (drop) { + space = mtr_read_ulint(ptr, MLOG_4BYTES, mtr); + } + + zip_size = fil_space_get_zip_size(space); + + if (UNIV_UNLIKELY(zip_size == ULINT_UNDEFINED)) { + /* It is a single table tablespace and the .ibd file is + missing: do nothing */ + + ut_print_timestamp(stderr); + fprintf(stderr, " InnoDB: Trying to TRUNCATE" + " a missing .ibd file of table %s!\n", table->name); + return(FIL_NULL); + } + + ptr = rec_get_nth_field_old(rec, + DICT_SYS_INDEXES_TYPE_FIELD, &len); + ut_ad(len == 4); + type = mach_read_from_4(ptr); + + ptr = rec_get_nth_field_old(rec, 1, &len); + ut_ad(len == 8); + index_id = mach_read_from_8(ptr); + + if (!drop) { + + goto create; + } + + /* We free all the pages but the root page first; this operation + may span several mini-transactions */ + + btr_free_but_not_root(space, zip_size, root_page_no); + + /* Then we free the root page in the same mini-transaction where + we create the b-tree and write its new root page number to the + appropriate field in the SYS_INDEXES record: this mini-transaction + marks the B-tree totally truncated */ + + btr_page_get(space, zip_size, root_page_no, RW_X_LATCH, mtr); + + btr_free_root(space, zip_size, root_page_no, mtr); +create: + /* We will temporarily write FIL_NULL to the PAGE_NO field + in SYS_INDEXES, so that the database will not get into an + inconsistent state in case it crashes between the mtr_commit() + below and the following mtr_commit() call. */ + page_rec_write_index_page_no(rec, DICT_SYS_INDEXES_PAGE_NO_FIELD, + FIL_NULL, mtr); + + /* We will need to commit the mini-transaction in order to avoid + deadlocks in the btr_create() call, because otherwise we would + be freeing and allocating pages in the same mini-transaction. */ + btr_pcur_store_position(pcur, mtr); + mtr_commit(mtr); + + mtr_start(mtr); + btr_pcur_restore_position(BTR_MODIFY_LEAF, pcur, mtr); + + /* Find the index corresponding to this SYS_INDEXES record. */ + for (index = UT_LIST_GET_FIRST(table->indexes); + index; + index = UT_LIST_GET_NEXT(indexes, index)) { + if (!ut_dulint_cmp(index->id, index_id)) { + root_page_no = btr_create(type, space, zip_size, + index_id, index, mtr); + index->page = (unsigned int) root_page_no; + return(root_page_no); + } + } + + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: Index %lu %lu of table %s is missing\n" + "InnoDB: from the data dictionary during TRUNCATE!\n", + ut_dulint_get_high(index_id), + ut_dulint_get_low(index_id), + table->name); + + return(FIL_NULL); +} + +/************************************************************************* +Creates a table create graph. */ +UNIV_INTERN +tab_node_t* +tab_create_graph_create( +/*====================*/ + /* out, own: table create node */ + dict_table_t* table, /* in: table to create, built as a memory data + structure */ + mem_heap_t* heap) /* in: heap where created */ +{ + tab_node_t* node; + + node = mem_heap_alloc(heap, sizeof(tab_node_t)); + + node->common.type = QUE_NODE_CREATE_TABLE; + + node->table = table; + + node->state = TABLE_BUILD_TABLE_DEF; + node->heap = mem_heap_create(256); + + node->tab_def = ins_node_create(INS_DIRECT, dict_sys->sys_tables, + heap); + node->tab_def->common.parent = node; + + node->col_def = ins_node_create(INS_DIRECT, dict_sys->sys_columns, + heap); + node->col_def->common.parent = node; + + node->commit_node = commit_node_create(heap); + node->commit_node->common.parent = node; + + return(node); +} + +/************************************************************************* +Creates an index create graph. */ +UNIV_INTERN +ind_node_t* +ind_create_graph_create( +/*====================*/ + /* out, own: index create node */ + dict_index_t* index, /* in: index to create, built as a memory data + structure */ + mem_heap_t* heap) /* in: heap where created */ +{ + ind_node_t* node; + + node = mem_heap_alloc(heap, sizeof(ind_node_t)); + + node->common.type = QUE_NODE_CREATE_INDEX; + + node->index = index; + + node->state = INDEX_BUILD_INDEX_DEF; + node->page_no = FIL_NULL; + node->heap = mem_heap_create(256); + + node->ind_def = ins_node_create(INS_DIRECT, + dict_sys->sys_indexes, heap); + node->ind_def->common.parent = node; + + node->field_def = ins_node_create(INS_DIRECT, + dict_sys->sys_fields, heap); + node->field_def->common.parent = node; + + node->commit_node = commit_node_create(heap); + node->commit_node->common.parent = node; + + return(node); +} + +/*************************************************************** +Creates a table. This is a high-level function used in SQL execution graphs. */ +UNIV_INTERN +que_thr_t* +dict_create_table_step( +/*===================*/ + /* out: query thread to run next or NULL */ + que_thr_t* thr) /* in: query thread */ +{ + tab_node_t* node; + ulint err = DB_ERROR; + trx_t* trx; + + ut_ad(thr); + ut_ad(mutex_own(&(dict_sys->mutex))); + + trx = thr_get_trx(thr); + + node = thr->run_node; + + ut_ad(que_node_get_type(node) == QUE_NODE_CREATE_TABLE); + + if (thr->prev_node == que_node_get_parent(node)) { + node->state = TABLE_BUILD_TABLE_DEF; + } + + if (node->state == TABLE_BUILD_TABLE_DEF) { + + /* DO THE CHECKS OF THE CONSISTENCY CONSTRAINTS HERE */ + + err = dict_build_table_def_step(thr, node); + + if (err != DB_SUCCESS) { + + goto function_exit; + } + + node->state = TABLE_BUILD_COL_DEF; + node->col_no = 0; + + thr->run_node = node->tab_def; + + return(thr); + } + + if (node->state == TABLE_BUILD_COL_DEF) { + + if (node->col_no < (node->table)->n_def) { + + err = dict_build_col_def_step(node); + + if (err != DB_SUCCESS) { + + goto function_exit; + } + + node->col_no++; + + thr->run_node = node->col_def; + + return(thr); + } else { + node->state = TABLE_COMMIT_WORK; + } + } + + if (node->state == TABLE_COMMIT_WORK) { + + /* Table was correctly defined: do NOT commit the transaction + (CREATE TABLE does NOT do an implicit commit of the current + transaction) */ + + node->state = TABLE_ADD_TO_CACHE; + + /* thr->run_node = node->commit_node; + + return(thr); */ + } + + if (node->state == TABLE_ADD_TO_CACHE) { + + dict_table_add_to_cache(node->table, node->heap); + + err = DB_SUCCESS; + } + +function_exit: + trx->error_state = err; + + if (err == DB_SUCCESS) { + /* Ok: do nothing */ + + } else if (err == DB_LOCK_WAIT) { + + return(NULL); + } else { + /* SQL error detected */ + + return(NULL); + } + + thr->run_node = que_node_get_parent(node); + + return(thr); +} + +/*************************************************************** +Creates an index. This is a high-level function used in SQL execution +graphs. */ +UNIV_INTERN +que_thr_t* +dict_create_index_step( +/*===================*/ + /* out: query thread to run next or NULL */ + que_thr_t* thr) /* in: query thread */ +{ + ind_node_t* node; + ulint err = DB_ERROR; + trx_t* trx; + + ut_ad(thr); + ut_ad(mutex_own(&(dict_sys->mutex))); + + trx = thr_get_trx(thr); + + node = thr->run_node; + + ut_ad(que_node_get_type(node) == QUE_NODE_CREATE_INDEX); + + if (thr->prev_node == que_node_get_parent(node)) { + node->state = INDEX_BUILD_INDEX_DEF; + } + + if (node->state == INDEX_BUILD_INDEX_DEF) { + /* DO THE CHECKS OF THE CONSISTENCY CONSTRAINTS HERE */ + err = dict_build_index_def_step(thr, node); + + if (err != DB_SUCCESS) { + + goto function_exit; + } + + node->state = INDEX_BUILD_FIELD_DEF; + node->field_no = 0; + + thr->run_node = node->ind_def; + + return(thr); + } + + if (node->state == INDEX_BUILD_FIELD_DEF) { + + if (node->field_no < (node->index)->n_fields) { + + err = dict_build_field_def_step(node); + + if (err != DB_SUCCESS) { + + goto function_exit; + } + + node->field_no++; + + thr->run_node = node->field_def; + + return(thr); + } else { + node->state = INDEX_ADD_TO_CACHE; + } + } + + if (node->state == INDEX_ADD_TO_CACHE) { + + dulint index_id = node->index->id; + + err = dict_index_add_to_cache(node->table, node->index, + FIL_NULL, TRUE); + + node->index = dict_index_get_if_in_cache_low(index_id); + ut_a(!node->index == (err != DB_SUCCESS)); + + if (err != DB_SUCCESS) { + + goto function_exit; + } + + node->state = INDEX_CREATE_INDEX_TREE; + } + + if (node->state == INDEX_CREATE_INDEX_TREE) { + + err = dict_create_index_tree_step(node); + + if (err != DB_SUCCESS) { + dict_index_remove_from_cache(node->table, node->index); + node->index = NULL; + + goto function_exit; + } + + node->index->page = node->page_no; + node->state = INDEX_COMMIT_WORK; + } + + if (node->state == INDEX_COMMIT_WORK) { + + /* Index was correctly defined: do NOT commit the transaction + (CREATE INDEX does NOT currently do an implicit commit of + the current transaction) */ + + node->state = INDEX_CREATE_INDEX_TREE; + + /* thr->run_node = node->commit_node; + + return(thr); */ + } + +function_exit: + trx->error_state = err; + + if (err == DB_SUCCESS) { + /* Ok: do nothing */ + + } else if (err == DB_LOCK_WAIT) { + + return(NULL); + } else { + /* SQL error detected */ + + return(NULL); + } + + thr->run_node = que_node_get_parent(node); + + return(thr); +} + +#ifndef UNIV_HOTBACKUP +/******************************************************************** +Creates the foreign key constraints system tables inside InnoDB +at database creation or database start if they are not found or are +not of the right form. */ +UNIV_INTERN +ulint +dict_create_or_check_foreign_constraint_tables(void) +/*================================================*/ + /* out: DB_SUCCESS or error code */ +{ + dict_table_t* table1; + dict_table_t* table2; + ulint error; + trx_t* trx; + + mutex_enter(&(dict_sys->mutex)); + + table1 = dict_table_get_low("SYS_FOREIGN"); + table2 = dict_table_get_low("SYS_FOREIGN_COLS"); + + if (table1 && table2 + && UT_LIST_GET_LEN(table1->indexes) == 3 + && UT_LIST_GET_LEN(table2->indexes) == 1) { + + /* Foreign constraint system tables have already been + created, and they are ok */ + + mutex_exit(&(dict_sys->mutex)); + + return(DB_SUCCESS); + } + + mutex_exit(&(dict_sys->mutex)); + + trx = trx_allocate_for_mysql(); + + trx->op_info = "creating foreign key sys tables"; + + row_mysql_lock_data_dictionary(trx); + + if (table1) { + fprintf(stderr, + "InnoDB: dropping incompletely created" + " SYS_FOREIGN table\n"); + row_drop_table_for_mysql("SYS_FOREIGN", trx, TRUE); + } + + if (table2) { + fprintf(stderr, + "InnoDB: dropping incompletely created" + " SYS_FOREIGN_COLS table\n"); + row_drop_table_for_mysql("SYS_FOREIGN_COLS", trx, TRUE); + } + + fprintf(stderr, + "InnoDB: Creating foreign key constraint system tables\n"); + + /* NOTE: in dict_load_foreigns we use the fact that + there are 2 secondary indexes on SYS_FOREIGN, and they + are defined just like below */ + + /* NOTE: when designing InnoDB's foreign key support in 2001, we made + an error and made the table names and the foreign key id of type + 'CHAR' (internally, really a VARCHAR). We should have made the type + VARBINARY, like in other InnoDB system tables, to get a clean + design. */ + + error = que_eval_sql(NULL, + "PROCEDURE CREATE_FOREIGN_SYS_TABLES_PROC () IS\n" + "BEGIN\n" + "CREATE TABLE\n" + "SYS_FOREIGN(ID CHAR, FOR_NAME CHAR," + " REF_NAME CHAR, N_COLS INT);\n" + "CREATE UNIQUE CLUSTERED INDEX ID_IND" + " ON SYS_FOREIGN (ID);\n" + "CREATE INDEX FOR_IND" + " ON SYS_FOREIGN (FOR_NAME);\n" + "CREATE INDEX REF_IND" + " ON SYS_FOREIGN (REF_NAME);\n" + "CREATE TABLE\n" + "SYS_FOREIGN_COLS(ID CHAR, POS INT," + " FOR_COL_NAME CHAR, REF_COL_NAME CHAR);\n" + "CREATE UNIQUE CLUSTERED INDEX ID_IND" + " ON SYS_FOREIGN_COLS (ID, POS);\n" + "END;\n" + , FALSE, trx); + + if (error != DB_SUCCESS) { + fprintf(stderr, "InnoDB: error %lu in creation\n", + (ulong) error); + + ut_a(error == DB_OUT_OF_FILE_SPACE + || error == DB_TOO_MANY_CONCURRENT_TRXS); + + fprintf(stderr, + "InnoDB: creation failed\n" + "InnoDB: tablespace is full\n" + "InnoDB: dropping incompletely created" + " SYS_FOREIGN tables\n"); + + row_drop_table_for_mysql("SYS_FOREIGN", trx, TRUE); + row_drop_table_for_mysql("SYS_FOREIGN_COLS", trx, TRUE); + + error = DB_MUST_GET_MORE_FILE_SPACE; + } + + trx_commit_for_mysql(trx); + + row_mysql_unlock_data_dictionary(trx); + + trx_free_for_mysql(trx); + + if (error == DB_SUCCESS) { + fprintf(stderr, + "InnoDB: Foreign key constraint system tables" + " created\n"); + } + + return(error); +} + +/******************************************************************** +Evaluate the given foreign key SQL statement. */ +static +ulint +dict_foreign_eval_sql( +/*==================*/ + /* out: error code or DB_SUCCESS */ + pars_info_t* info, /* in: info struct, or NULL */ + const char* sql, /* in: SQL string to evaluate */ + dict_table_t* table, /* in: table */ + dict_foreign_t* foreign,/* in: foreign */ + trx_t* trx) /* in: transaction */ +{ + ulint error; + FILE* ef = dict_foreign_err_file; + + error = que_eval_sql(info, sql, FALSE, trx); + + if (error == DB_DUPLICATE_KEY) { + mutex_enter(&dict_foreign_err_mutex); + rewind(ef); + ut_print_timestamp(ef); + fputs(" Error in foreign key constraint creation for table ", + ef); + ut_print_name(ef, trx, TRUE, table->name); + fputs(".\nA foreign key constraint of name ", ef); + ut_print_name(ef, trx, TRUE, foreign->id); + fputs("\nalready exists." + " (Note that internally InnoDB adds 'databasename'\n" + "in front of the user-defined constraint name.)\n" + "Note that InnoDB's FOREIGN KEY system tables store\n" + "constraint names as case-insensitive, with the\n" + "MySQL standard latin1_swedish_ci collation. If you\n" + "create tables or databases whose names differ only in\n" + "the character case, then collisions in constraint\n" + "names can occur. Workaround: name your constraints\n" + "explicitly with unique names.\n", + ef); + + mutex_exit(&dict_foreign_err_mutex); + + return(error); + } + + if (error != DB_SUCCESS) { + fprintf(stderr, + "InnoDB: Foreign key constraint creation failed:\n" + "InnoDB: internal error number %lu\n", (ulong) error); + + mutex_enter(&dict_foreign_err_mutex); + ut_print_timestamp(ef); + fputs(" Internal error in foreign key constraint creation" + " for table ", ef); + ut_print_name(ef, trx, TRUE, table->name); + fputs(".\n" + "See the MySQL .err log in the datadir" + " for more information.\n", ef); + mutex_exit(&dict_foreign_err_mutex); + + return(error); + } + + return(DB_SUCCESS); +} + +/************************************************************************ +Add a single foreign key field definition to the data dictionary tables in +the database. */ +static +ulint +dict_create_add_foreign_field_to_dictionary( +/*========================================*/ + /* out: error code or DB_SUCCESS */ + ulint field_nr, /* in: foreign field number */ + dict_table_t* table, /* in: table */ + dict_foreign_t* foreign, /* in: foreign */ + trx_t* trx) /* in: transaction */ +{ + pars_info_t* info = pars_info_create(); + + pars_info_add_str_literal(info, "id", foreign->id); + + pars_info_add_int4_literal(info, "pos", field_nr); + + pars_info_add_str_literal(info, "for_col_name", + foreign->foreign_col_names[field_nr]); + + pars_info_add_str_literal(info, "ref_col_name", + foreign->referenced_col_names[field_nr]); + + return(dict_foreign_eval_sql( + info, + "PROCEDURE P () IS\n" + "BEGIN\n" + "INSERT INTO SYS_FOREIGN_COLS VALUES" + "(:id, :pos, :for_col_name, :ref_col_name);\n" + "END;\n", + table, foreign, trx)); +} + +/************************************************************************ +Add a single foreign key definition to the data dictionary tables in the +database. We also generate names to constraints that were not named by the +user. A generated constraint has a name of the format +databasename/tablename_ibfk_<number>, where the numbers start from 1, and +are given locally for this table, that is, the number is not global, as in +the old format constraints < 4.0.18 it used to be. */ +static +ulint +dict_create_add_foreign_to_dictionary( +/*==================================*/ + /* out: error code or DB_SUCCESS */ + ulint* id_nr, /* in/out: number to use in id generation; + incremented if used */ + dict_table_t* table, /* in: table */ + dict_foreign_t* foreign,/* in: foreign */ + trx_t* trx) /* in: transaction */ +{ + ulint error; + ulint i; + + pars_info_t* info = pars_info_create(); + + if (foreign->id == NULL) { + /* Generate a new constraint id */ + ulint namelen = strlen(table->name); + char* id = mem_heap_alloc(foreign->heap, namelen + 20); + /* no overflow if number < 1e13 */ + sprintf(id, "%s_ibfk_%lu", table->name, (ulong) (*id_nr)++); + foreign->id = id; + } + + pars_info_add_str_literal(info, "id", foreign->id); + + pars_info_add_str_literal(info, "for_name", table->name); + + pars_info_add_str_literal(info, "ref_name", + foreign->referenced_table_name); + + pars_info_add_int4_literal(info, "n_cols", + foreign->n_fields + (foreign->type << 24)); + + error = dict_foreign_eval_sql(info, + "PROCEDURE P () IS\n" + "BEGIN\n" + "INSERT INTO SYS_FOREIGN VALUES" + "(:id, :for_name, :ref_name, :n_cols);\n" + "END;\n" + , table, foreign, trx); + + if (error != DB_SUCCESS) { + + return(error); + } + + for (i = 0; i < foreign->n_fields; i++) { + error = dict_create_add_foreign_field_to_dictionary( + i, table, foreign, trx); + + if (error != DB_SUCCESS) { + + return(error); + } + } + + error = dict_foreign_eval_sql(NULL, + "PROCEDURE P () IS\n" + "BEGIN\n" + "COMMIT WORK;\n" + "END;\n" + , table, foreign, trx); + + return(error); +} + +/************************************************************************ +Adds foreign key definitions to data dictionary tables in the database. */ +UNIV_INTERN +ulint +dict_create_add_foreigns_to_dictionary( +/*===================================*/ + /* out: error code or DB_SUCCESS */ + ulint start_id,/* in: if we are actually doing ALTER TABLE + ADD CONSTRAINT, we want to generate constraint + numbers which are bigger than in the table so + far; we number the constraints from + start_id + 1 up; start_id should be set to 0 if + we are creating a new table, or if the table + so far has no constraints for which the name + was generated here */ + dict_table_t* table, /* in: table */ + trx_t* trx) /* in: transaction */ +{ + dict_foreign_t* foreign; + ulint number = start_id + 1; + ulint error; + + ut_ad(mutex_own(&(dict_sys->mutex))); + + if (NULL == dict_table_get_low("SYS_FOREIGN")) { + fprintf(stderr, + "InnoDB: table SYS_FOREIGN not found" + " in internal data dictionary\n"); + + return(DB_ERROR); + } + + for (foreign = UT_LIST_GET_FIRST(table->foreign_list); + foreign; + foreign = UT_LIST_GET_NEXT(foreign_list, foreign)) { + + error = dict_create_add_foreign_to_dictionary(&number, table, + foreign, trx); + + if (error != DB_SUCCESS) { + + return(error); + } + } + + return(DB_SUCCESS); +} +#endif /* !UNIV_HOTBACKUP */ === added file 'storage/xtradb/dict/dict0dict.c' --- a/storage/xtradb/dict/dict0dict.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/dict/dict0dict.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,4747 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/********************************************************************** +Data dictionary system + +Created 1/8/1996 Heikki Tuuri +***********************************************************************/ + +#include "dict0dict.h" + +#ifdef UNIV_NONINL +#include "dict0dict.ic" +#endif + +#include "buf0buf.h" +#include "data0type.h" +#include "mach0data.h" +#include "dict0boot.h" +#include "dict0mem.h" +#include "dict0crea.h" +#include "trx0undo.h" +#include "btr0btr.h" +#include "btr0cur.h" +#include "btr0sea.h" +#include "page0zip.h" +#include "page0page.h" +#include "pars0pars.h" +#include "pars0sym.h" +#include "que0que.h" +#include "rem0cmp.h" +#include "row0merge.h" +#ifndef UNIV_HOTBACKUP +# include "m_ctype.h" /* my_isspace() */ +# include "ha_prototypes.h" /* innobase_strcasecmp() */ +#endif /* !UNIV_HOTBACKUP */ + +#include <ctype.h> + +/* the dictionary system */ +UNIV_INTERN dict_sys_t* dict_sys = NULL; + +/* table create, drop, etc. reserve this in X-mode; implicit or +backround operations purge, rollback, foreign key checks reserve this +in S-mode; we cannot trust that MySQL protects implicit or background +operations a table drop since MySQL does not know of them; therefore +we need this; NOTE: a transaction which reserves this must keep book +on the mode in trx->dict_operation_lock_mode */ +UNIV_INTERN rw_lock_t dict_operation_lock; + +#define DICT_HEAP_SIZE 100 /* initial memory heap size when + creating a table or index object */ +#define DICT_POOL_PER_TABLE_HASH 512 /* buffer pool max size per table + hash table fixed size in bytes */ +#define DICT_POOL_PER_VARYING 4 /* buffer pool max size per data + dictionary varying size in bytes */ + +/* Identifies generated InnoDB foreign key names */ +static char dict_ibfk[] = "_ibfk_"; + +/*********************************************************************** +Tries to find column names for the index and sets the col field of the +index. */ +static +void +dict_index_find_cols( +/*=================*/ + dict_table_t* table, /* in: table */ + dict_index_t* index); /* in: index */ +/*********************************************************************** +Builds the internal dictionary cache representation for a clustered +index, containing also system fields not defined by the user. */ +static +dict_index_t* +dict_index_build_internal_clust( +/*============================*/ + /* out, own: the internal + representation of the clustered + index */ + const dict_table_t* table, /* in: table */ + dict_index_t* index); /* in: user representation of + a clustered index */ +/*********************************************************************** +Builds the internal dictionary cache representation for a non-clustered +index, containing also system fields not defined by the user. */ +static +dict_index_t* +dict_index_build_internal_non_clust( +/*================================*/ + /* out, own: the internal + representation of the non-clustered + index */ + const dict_table_t* table, /* in: table */ + dict_index_t* index); /* in: user representation of + a non-clustered index */ +/************************************************************************** +Removes a foreign constraint struct from the dictionary cache. */ +static +void +dict_foreign_remove_from_cache( +/*===========================*/ + dict_foreign_t* foreign); /* in, own: foreign constraint */ +/************************************************************************** +Prints a column data. */ +static +void +dict_col_print_low( +/*===============*/ + const dict_table_t* table, /* in: table */ + const dict_col_t* col); /* in: column */ +/************************************************************************** +Prints an index data. */ +static +void +dict_index_print_low( +/*=================*/ + dict_index_t* index); /* in: index */ +/************************************************************************** +Prints a field data. */ +static +void +dict_field_print_low( +/*=================*/ + dict_field_t* field); /* in: field */ +/************************************************************************* +Frees a foreign key struct. */ +static +void +dict_foreign_free( +/*==============*/ + dict_foreign_t* foreign); /* in, own: foreign key struct */ + +/* Stream for storing detailed information about the latest foreign key +and unique key errors */ +UNIV_INTERN FILE* dict_foreign_err_file = NULL; +/* mutex protecting the foreign and unique error buffers */ +UNIV_INTERN mutex_t dict_foreign_err_mutex; + +#ifndef UNIV_HOTBACKUP +/********************************************************************** +Makes all characters in a NUL-terminated UTF-8 string lower case. */ +UNIV_INTERN +void +dict_casedn_str( +/*============*/ + char* a) /* in/out: string to put in lower case */ +{ + innobase_casedn_str(a); +} +#endif /* !UNIV_HOTBACKUP */ + +/************************************************************************ +Checks if the database name in two table names is the same. */ +UNIV_INTERN +ibool +dict_tables_have_same_db( +/*=====================*/ + /* out: TRUE if same db name */ + const char* name1, /* in: table name in the form + dbname '/' tablename */ + const char* name2) /* in: table name in the form + dbname '/' tablename */ +{ + for (; *name1 == *name2; name1++, name2++) { + if (*name1 == '/') { + return(TRUE); + } + ut_a(*name1); /* the names must contain '/' */ + } + return(FALSE); +} + +/************************************************************************ +Return the end of table name where we have removed dbname and '/'. */ +UNIV_INTERN +const char* +dict_remove_db_name( +/*================*/ + /* out: table name */ + const char* name) /* in: table name in the form + dbname '/' tablename */ +{ + const char* s = strchr(name, '/'); + ut_a(s); + + return(s + 1); +} + +/************************************************************************ +Get the database name length in a table name. */ +UNIV_INTERN +ulint +dict_get_db_name_len( +/*=================*/ + /* out: database name length */ + const char* name) /* in: table name in the form + dbname '/' tablename */ +{ + const char* s; + s = strchr(name, '/'); + ut_a(s); + return(s - name); +} + +/************************************************************************ +Reserves the dictionary system mutex for MySQL. */ +UNIV_INTERN +void +dict_mutex_enter_for_mysql(void) +/*============================*/ +{ + mutex_enter(&(dict_sys->mutex)); +} + +/************************************************************************ +Releases the dictionary system mutex for MySQL. */ +UNIV_INTERN +void +dict_mutex_exit_for_mysql(void) +/*===========================*/ +{ + mutex_exit(&(dict_sys->mutex)); +} + +/************************************************************************ +Decrements the count of open MySQL handles to a table. */ +UNIV_INTERN +void +dict_table_decrement_handle_count( +/*==============================*/ + dict_table_t* table, /* in/out: table */ + ibool dict_locked) /* in: TRUE=data dictionary locked */ +{ + if (!dict_locked) { + mutex_enter(&dict_sys->mutex); + } + + ut_ad(mutex_own(&dict_sys->mutex)); + ut_a(table->n_mysql_handles_opened > 0); + + table->n_mysql_handles_opened--; + + if (!dict_locked) { + mutex_exit(&dict_sys->mutex); + } +} + +/************************************************************************** +Returns a column's name. */ +UNIV_INTERN +const char* +dict_table_get_col_name( +/*====================*/ + /* out: column name. NOTE: not + guaranteed to stay valid if table is + modified in any way (columns added, + etc.). */ + const dict_table_t* table, /* in: table */ + ulint col_nr) /* in: column number */ +{ + ulint i; + const char* s; + + ut_ad(table); + ut_ad(col_nr < table->n_def); + ut_ad(table->magic_n == DICT_TABLE_MAGIC_N); + + s = table->col_names; + if (s) { + for (i = 0; i < col_nr; i++) { + s += strlen(s) + 1; + } + } + + return(s); +} + + +/************************************************************************ +Acquire the autoinc lock.*/ +UNIV_INTERN +void +dict_table_autoinc_lock( +/*====================*/ + dict_table_t* table) /* in/out: table */ +{ + mutex_enter(&table->autoinc_mutex); +} + +/************************************************************************ +Unconditionally set the autoinc counter. */ +UNIV_INTERN +void +dict_table_autoinc_initialize( +/*==========================*/ + dict_table_t* table, /* in/out: table */ + ib_uint64_t value) /* in: next value to assign to a row */ +{ + ut_ad(mutex_own(&table->autoinc_mutex)); + + table->autoinc = value; +} + +/************************************************************************ +Reads the next autoinc value (== autoinc counter value), 0 if not yet +initialized. */ +UNIV_INTERN +ib_uint64_t +dict_table_autoinc_read( +/*====================*/ + /* out: value for a new row, or 0 */ + const dict_table_t* table) /* in: table */ +{ + ut_ad(mutex_own(&table->autoinc_mutex)); + + return(table->autoinc); +} + +/************************************************************************ +Updates the autoinc counter if the value supplied is greater than the +current value. */ +UNIV_INTERN +void +dict_table_autoinc_update_if_greater( +/*=================================*/ + + dict_table_t* table, /* in/out: table */ + ib_uint64_t value) /* in: value which was assigned to a row */ +{ + ut_ad(mutex_own(&table->autoinc_mutex)); + + if (value > table->autoinc) { + + table->autoinc = value; + } +} + +/************************************************************************ +Release the autoinc lock.*/ +UNIV_INTERN +void +dict_table_autoinc_unlock( +/*======================*/ + dict_table_t* table) /* in/out: table */ +{ + mutex_exit(&table->autoinc_mutex); +} + +/************************************************************************** +Looks for an index with the given table and index id. +NOTE that we do not reserve the dictionary mutex. */ +UNIV_INTERN +dict_index_t* +dict_index_get_on_id_low( +/*=====================*/ + /* out: index or NULL if not found + from cache */ + dict_table_t* table, /* in: table */ + dulint id) /* in: index id */ +{ + dict_index_t* index; + + index = dict_table_get_first_index(table); + + while (index) { + if (0 == ut_dulint_cmp(id, index->id)) { + /* Found */ + + return(index); + } + + index = dict_table_get_next_index(index); + } + + return(NULL); +} + +/************************************************************************ +Looks for column n in an index. */ +UNIV_INTERN +ulint +dict_index_get_nth_col_pos( +/*=======================*/ + /* out: position in internal + representation of the index; + if not contained, returns + ULINT_UNDEFINED */ + const dict_index_t* index, /* in: index */ + ulint n) /* in: column number */ +{ + const dict_field_t* field; + const dict_col_t* col; + ulint pos; + ulint n_fields; + + ut_ad(index); + ut_ad(index->magic_n == DICT_INDEX_MAGIC_N); + + col = dict_table_get_nth_col(index->table, n); + + if (dict_index_is_clust(index)) { + + return(dict_col_get_clust_pos(col, index)); + } + + n_fields = dict_index_get_n_fields(index); + + for (pos = 0; pos < n_fields; pos++) { + field = dict_index_get_nth_field(index, pos); + + if (col == field->col && field->prefix_len == 0) { + + return(pos); + } + } + + return(ULINT_UNDEFINED); +} + +/************************************************************************ +Returns TRUE if the index contains a column or a prefix of that column. */ +UNIV_INTERN +ibool +dict_index_contains_col_or_prefix( +/*==============================*/ + /* out: TRUE if contains the column + or its prefix */ + const dict_index_t* index, /* in: index */ + ulint n) /* in: column number */ +{ + const dict_field_t* field; + const dict_col_t* col; + ulint pos; + ulint n_fields; + + ut_ad(index); + ut_ad(index->magic_n == DICT_INDEX_MAGIC_N); + + if (dict_index_is_clust(index)) { + + return(TRUE); + } + + col = dict_table_get_nth_col(index->table, n); + + n_fields = dict_index_get_n_fields(index); + + for (pos = 0; pos < n_fields; pos++) { + field = dict_index_get_nth_field(index, pos); + + if (col == field->col) { + + return(TRUE); + } + } + + return(FALSE); +} + +/************************************************************************ +Looks for a matching field in an index. The column has to be the same. The +column in index must be complete, or must contain a prefix longer than the +column in index2. That is, we must be able to construct the prefix in index2 +from the prefix in index. */ +UNIV_INTERN +ulint +dict_index_get_nth_field_pos( +/*=========================*/ + /* out: position in internal + representation of the index; + if not contained, returns + ULINT_UNDEFINED */ + const dict_index_t* index, /* in: index from which to search */ + const dict_index_t* index2, /* in: index */ + ulint n) /* in: field number in index2 */ +{ + const dict_field_t* field; + const dict_field_t* field2; + ulint n_fields; + ulint pos; + + ut_ad(index); + ut_ad(index->magic_n == DICT_INDEX_MAGIC_N); + + field2 = dict_index_get_nth_field(index2, n); + + n_fields = dict_index_get_n_fields(index); + + for (pos = 0; pos < n_fields; pos++) { + field = dict_index_get_nth_field(index, pos); + + if (field->col == field2->col + && (field->prefix_len == 0 + || (field->prefix_len >= field2->prefix_len + && field2->prefix_len != 0))) { + + return(pos); + } + } + + return(ULINT_UNDEFINED); +} + +/************************************************************************** +Returns a table object based on table id. */ +UNIV_INTERN +dict_table_t* +dict_table_get_on_id( +/*=================*/ + /* out: table, NULL if does not exist */ + dulint table_id, /* in: table id */ + trx_t* trx) /* in: transaction handle */ +{ + dict_table_t* table; + + if (ut_dulint_cmp(table_id, DICT_FIELDS_ID) <= 0 + || trx->dict_operation_lock_mode == RW_X_LATCH) { + /* It is a system table which will always exist in the table + cache: we avoid acquiring the dictionary mutex, because + if we are doing a rollback to handle an error in TABLE + CREATE, for example, we already have the mutex! */ + + ut_ad(mutex_own(&(dict_sys->mutex)) + || trx->dict_operation_lock_mode == RW_X_LATCH); + + return(dict_table_get_on_id_low(table_id)); + } + + mutex_enter(&(dict_sys->mutex)); + + table = dict_table_get_on_id_low(table_id); + + mutex_exit(&(dict_sys->mutex)); + + return(table); +} + +/************************************************************************ +Looks for column n position in the clustered index. */ +UNIV_INTERN +ulint +dict_table_get_nth_col_pos( +/*=======================*/ + /* out: position in internal + representation of + the clustered index */ + const dict_table_t* table, /* in: table */ + ulint n) /* in: column number */ +{ + return(dict_index_get_nth_col_pos(dict_table_get_first_index(table), + n)); +} + +/************************************************************************ +Checks if a column is in the ordering columns of the clustered index of a +table. Column prefixes are treated like whole columns. */ +UNIV_INTERN +ibool +dict_table_col_in_clustered_key( +/*============================*/ + /* out: TRUE if the column, or its + prefix, is in the clustered key */ + const dict_table_t* table, /* in: table */ + ulint n) /* in: column number */ +{ + const dict_index_t* index; + const dict_field_t* field; + const dict_col_t* col; + ulint pos; + ulint n_fields; + + ut_ad(table); + + col = dict_table_get_nth_col(table, n); + + index = dict_table_get_first_index(table); + + n_fields = dict_index_get_n_unique(index); + + for (pos = 0; pos < n_fields; pos++) { + field = dict_index_get_nth_field(index, pos); + + if (col == field->col) { + + return(TRUE); + } + } + + return(FALSE); +} + +/************************************************************************** +Inits the data dictionary module. */ +UNIV_INTERN +void +dict_init(void) +/*===========*/ +{ + dict_sys = mem_alloc(sizeof(dict_sys_t)); + + mutex_create(&dict_sys->mutex, SYNC_DICT); + + dict_sys->table_hash = hash_create(buf_pool_get_curr_size() + / (DICT_POOL_PER_TABLE_HASH + * UNIV_WORD_SIZE)); + dict_sys->table_id_hash = hash_create(buf_pool_get_curr_size() + / (DICT_POOL_PER_TABLE_HASH + * UNIV_WORD_SIZE)); + dict_sys->size = 0; + + UT_LIST_INIT(dict_sys->table_LRU); + + rw_lock_create(&dict_operation_lock, SYNC_DICT_OPERATION); + + dict_foreign_err_file = os_file_create_tmpfile(); + ut_a(dict_foreign_err_file); + + mutex_create(&dict_foreign_err_mutex, SYNC_ANY_LATCH); +} + +/************************************************************************** +Returns a table object and optionally increment its MySQL open handle count. +NOTE! This is a high-level function to be used mainly from outside the +'dict' directory. Inside this directory dict_table_get_low is usually the +appropriate function. */ +UNIV_INTERN +dict_table_t* +dict_table_get( +/*===========*/ + /* out: table, NULL if + does not exist */ + const char* table_name, /* in: table name */ + ibool inc_mysql_count) + /* in: whether to increment the open + handle count on the table */ +{ + dict_table_t* table; + + mutex_enter(&(dict_sys->mutex)); + + table = dict_table_get_low(table_name); + + if (inc_mysql_count && table) { + table->n_mysql_handles_opened++; + } + + mutex_exit(&(dict_sys->mutex)); + + if (table != NULL) { + if (!table->stat_initialized) { + /* If table->ibd_file_missing == TRUE, this will + print an error message and return without doing + anything. */ + dict_update_statistics(table); + } + } + + return(table); +} + +/************************************************************************** +Adds system columns to a table object. */ +UNIV_INTERN +void +dict_table_add_system_columns( +/*==========================*/ + dict_table_t* table, /* in/out: table */ + mem_heap_t* heap) /* in: temporary heap */ +{ + ut_ad(table); + ut_ad(table->n_def == table->n_cols - DATA_N_SYS_COLS); + ut_ad(table->magic_n == DICT_TABLE_MAGIC_N); + ut_ad(!table->cached); + + /* NOTE: the system columns MUST be added in the following order + (so that they can be indexed by the numerical value of DATA_ROW_ID, + etc.) and as the last columns of the table memory object. + The clustered index will not always physically contain all + system columns. */ + + dict_mem_table_add_col(table, heap, "DB_ROW_ID", DATA_SYS, + DATA_ROW_ID | DATA_NOT_NULL, + DATA_ROW_ID_LEN); +#if DATA_ROW_ID != 0 +#error "DATA_ROW_ID != 0" +#endif + dict_mem_table_add_col(table, heap, "DB_TRX_ID", DATA_SYS, + DATA_TRX_ID | DATA_NOT_NULL, + DATA_TRX_ID_LEN); +#if DATA_TRX_ID != 1 +#error "DATA_TRX_ID != 1" +#endif + dict_mem_table_add_col(table, heap, "DB_ROLL_PTR", DATA_SYS, + DATA_ROLL_PTR | DATA_NOT_NULL, + DATA_ROLL_PTR_LEN); +#if DATA_ROLL_PTR != 2 +#error "DATA_ROLL_PTR != 2" +#endif + + /* This check reminds that if a new system column is added to + the program, it should be dealt with here */ +#if DATA_N_SYS_COLS != 3 +#error "DATA_N_SYS_COLS != 3" +#endif +} + +/************************************************************************** +Adds a table object to the dictionary cache. */ +UNIV_INTERN +void +dict_table_add_to_cache( +/*====================*/ + dict_table_t* table, /* in: table */ + mem_heap_t* heap) /* in: temporary heap */ +{ + ulint fold; + ulint id_fold; + ulint i; + ulint row_len; + + /* The lower limit for what we consider a "big" row */ +#define BIG_ROW_SIZE 1024 + + ut_ad(mutex_own(&(dict_sys->mutex))); + + dict_table_add_system_columns(table, heap); + + table->cached = TRUE; + + fold = ut_fold_string(table->name); + id_fold = ut_fold_dulint(table->id); + + row_len = 0; + for (i = 0; i < table->n_def; i++) { + ulint col_len = dict_col_get_max_size( + dict_table_get_nth_col(table, i)); + + row_len += col_len; + + /* If we have a single unbounded field, or several gigantic + fields, mark the maximum row size as BIG_ROW_SIZE. */ + if (row_len >= BIG_ROW_SIZE || col_len >= BIG_ROW_SIZE) { + row_len = BIG_ROW_SIZE; + + break; + } + } + + table->big_rows = row_len >= BIG_ROW_SIZE; + + /* Look for a table with the same name: error if such exists */ + { + dict_table_t* table2; + HASH_SEARCH(name_hash, dict_sys->table_hash, fold, + dict_table_t*, table2, ut_ad(table2->cached), + ut_strcmp(table2->name, table->name) == 0); + ut_a(table2 == NULL); + +#ifdef UNIV_DEBUG + /* Look for the same table pointer with a different name */ + HASH_SEARCH_ALL(name_hash, dict_sys->table_hash, + dict_table_t*, table2, ut_ad(table2->cached), + table2 == table); + ut_ad(table2 == NULL); +#endif /* UNIV_DEBUG */ + } + + /* Look for a table with the same id: error if such exists */ + { + dict_table_t* table2; + HASH_SEARCH(id_hash, dict_sys->table_id_hash, id_fold, + dict_table_t*, table2, ut_ad(table2->cached), + ut_dulint_cmp(table2->id, table->id) == 0); + ut_a(table2 == NULL); + +#ifdef UNIV_DEBUG + /* Look for the same table pointer with a different id */ + HASH_SEARCH_ALL(id_hash, dict_sys->table_id_hash, + dict_table_t*, table2, ut_ad(table2->cached), + table2 == table); + ut_ad(table2 == NULL); +#endif /* UNIV_DEBUG */ + } + + /* Add table to hash table of tables */ + HASH_INSERT(dict_table_t, name_hash, dict_sys->table_hash, fold, + table); + + /* Add table to hash table of tables based on table id */ + HASH_INSERT(dict_table_t, id_hash, dict_sys->table_id_hash, id_fold, + table); + /* Add table to LRU list of tables */ + UT_LIST_ADD_FIRST(table_LRU, dict_sys->table_LRU, table); + + dict_sys->size += mem_heap_get_size(table->heap); +} + +/************************************************************************** +Looks for an index with the given id. NOTE that we do not reserve +the dictionary mutex: this function is for emergency purposes like +printing info of a corrupt database page! */ +UNIV_INTERN +dict_index_t* +dict_index_find_on_id_low( +/*======================*/ + /* out: index or NULL if not found from cache */ + dulint id) /* in: index id */ +{ + dict_table_t* table; + dict_index_t* index; + + table = UT_LIST_GET_FIRST(dict_sys->table_LRU); + + while (table) { + index = dict_table_get_first_index(table); + + while (index) { + if (0 == ut_dulint_cmp(id, index->id)) { + /* Found */ + + return(index); + } + + index = dict_table_get_next_index(index); + } + + table = UT_LIST_GET_NEXT(table_LRU, table); + } + + return(NULL); +} + +/************************************************************************** +Renames a table object. */ +UNIV_INTERN +ibool +dict_table_rename_in_cache( +/*=======================*/ + /* out: TRUE if success */ + dict_table_t* table, /* in/out: table */ + const char* new_name, /* in: new name */ + ibool rename_also_foreigns)/* in: in ALTER TABLE we want + to preserve the original table name + in constraints which reference it */ +{ + dict_foreign_t* foreign; + dict_index_t* index; + ulint fold; + ulint old_size; + const char* old_name; + + ut_ad(table); + ut_ad(mutex_own(&(dict_sys->mutex))); + + old_size = mem_heap_get_size(table->heap); + old_name = table->name; + + fold = ut_fold_string(new_name); + + /* Look for a table with the same name: error if such exists */ + { + dict_table_t* table2; + HASH_SEARCH(name_hash, dict_sys->table_hash, fold, + dict_table_t*, table2, ut_ad(table2->cached), + (ut_strcmp(table2->name, new_name) == 0)); + if (UNIV_LIKELY_NULL(table2)) { + ut_print_timestamp(stderr); + fputs(" InnoDB: Error: dictionary cache" + " already contains a table ", stderr); + ut_print_name(stderr, NULL, TRUE, new_name); + fputs("\n" + "InnoDB: cannot rename table ", stderr); + ut_print_name(stderr, NULL, TRUE, old_name); + putc('\n', stderr); + return(FALSE); + } + } + + /* If the table is stored in a single-table tablespace, rename the + .ibd file */ + + if (table->space != 0) { + if (table->dir_path_of_temp_table != NULL) { + ut_print_timestamp(stderr); + fputs(" InnoDB: Error: trying to rename a" + " TEMPORARY TABLE ", stderr); + ut_print_name(stderr, NULL, TRUE, old_name); + fputs(" (", stderr); + ut_print_filename(stderr, + table->dir_path_of_temp_table); + fputs(" )\n", stderr); + return(FALSE); + } else if (!fil_rename_tablespace(old_name, table->space, + new_name)) { + return(FALSE); + } + } + + /* Remove table from the hash tables of tables */ + HASH_DELETE(dict_table_t, name_hash, dict_sys->table_hash, + ut_fold_string(old_name), table); + table->name = mem_heap_strdup(table->heap, new_name); + + /* Add table to hash table of tables */ + HASH_INSERT(dict_table_t, name_hash, dict_sys->table_hash, fold, + table); + dict_sys->size += (mem_heap_get_size(table->heap) - old_size); + + /* Update the table_name field in indexes */ + index = dict_table_get_first_index(table); + + while (index != NULL) { + index->table_name = table->name; + + index = dict_table_get_next_index(index); + } + + if (!rename_also_foreigns) { + /* In ALTER TABLE we think of the rename table operation + in the direction table -> temporary table (#sql...) + as dropping the table with the old name and creating + a new with the new name. Thus we kind of drop the + constraints from the dictionary cache here. The foreign key + constraints will be inherited to the new table from the + system tables through a call of dict_load_foreigns. */ + + /* Remove the foreign constraints from the cache */ + foreign = UT_LIST_GET_LAST(table->foreign_list); + + while (foreign != NULL) { + dict_foreign_remove_from_cache(foreign); + foreign = UT_LIST_GET_LAST(table->foreign_list); + } + + /* Reset table field in referencing constraints */ + + foreign = UT_LIST_GET_FIRST(table->referenced_list); + + while (foreign != NULL) { + foreign->referenced_table = NULL; + foreign->referenced_index = NULL; + + foreign = UT_LIST_GET_NEXT(referenced_list, foreign); + } + + /* Make the list of referencing constraints empty */ + + UT_LIST_INIT(table->referenced_list); + + return(TRUE); + } + + /* Update the table name fields in foreign constraints, and update also + the constraint id of new format >= 4.0.18 constraints. Note that at + this point we have already changed table->name to the new name. */ + + foreign = UT_LIST_GET_FIRST(table->foreign_list); + + while (foreign != NULL) { + if (ut_strlen(foreign->foreign_table_name) + < ut_strlen(table->name)) { + /* Allocate a longer name buffer; + TODO: store buf len to save memory */ + + foreign->foreign_table_name + = mem_heap_alloc(foreign->heap, + ut_strlen(table->name) + 1); + } + + strcpy(foreign->foreign_table_name, table->name); + + if (strchr(foreign->id, '/')) { + ulint db_len; + char* old_id; + + /* This is a >= 4.0.18 format id */ + + old_id = mem_strdup(foreign->id); + + if (ut_strlen(foreign->id) > ut_strlen(old_name) + + ((sizeof dict_ibfk) - 1) + && !memcmp(foreign->id, old_name, + ut_strlen(old_name)) + && !memcmp(foreign->id + ut_strlen(old_name), + dict_ibfk, (sizeof dict_ibfk) - 1)) { + + /* This is a generated >= 4.0.18 format id */ + + if (strlen(table->name) > strlen(old_name)) { + foreign->id = mem_heap_alloc( + foreign->heap, + strlen(table->name) + + strlen(old_id) + 1); + } + + /* Replace the prefix 'databasename/tablename' + with the new names */ + strcpy(foreign->id, table->name); + strcat(foreign->id, + old_id + ut_strlen(old_name)); + } else { + /* This is a >= 4.0.18 format id where the user + gave the id name */ + db_len = dict_get_db_name_len(table->name) + 1; + + if (dict_get_db_name_len(table->name) + > dict_get_db_name_len(foreign->id)) { + + foreign->id = mem_heap_alloc( + foreign->heap, + db_len + strlen(old_id) + 1); + } + + /* Replace the database prefix in id with the + one from table->name */ + + ut_memcpy(foreign->id, table->name, db_len); + + strcpy(foreign->id + db_len, + dict_remove_db_name(old_id)); + } + + mem_free(old_id); + } + + foreign = UT_LIST_GET_NEXT(foreign_list, foreign); + } + + foreign = UT_LIST_GET_FIRST(table->referenced_list); + + while (foreign != NULL) { + if (ut_strlen(foreign->referenced_table_name) + < ut_strlen(table->name)) { + /* Allocate a longer name buffer; + TODO: store buf len to save memory */ + + foreign->referenced_table_name = mem_heap_alloc( + foreign->heap, strlen(table->name) + 1); + } + + strcpy(foreign->referenced_table_name, table->name); + + foreign = UT_LIST_GET_NEXT(referenced_list, foreign); + } + + return(TRUE); +} + +/************************************************************************** +Change the id of a table object in the dictionary cache. This is used in +DISCARD TABLESPACE. */ +UNIV_INTERN +void +dict_table_change_id_in_cache( +/*==========================*/ + dict_table_t* table, /* in/out: table object already in cache */ + dulint new_id) /* in: new id to set */ +{ + ut_ad(table); + ut_ad(mutex_own(&(dict_sys->mutex))); + ut_ad(table->magic_n == DICT_TABLE_MAGIC_N); + + /* Remove the table from the hash table of id's */ + + HASH_DELETE(dict_table_t, id_hash, dict_sys->table_id_hash, + ut_fold_dulint(table->id), table); + table->id = new_id; + + /* Add the table back to the hash table */ + HASH_INSERT(dict_table_t, id_hash, dict_sys->table_id_hash, + ut_fold_dulint(table->id), table); +} + +/************************************************************************** +Removes a table object from the dictionary cache. */ +UNIV_INTERN +void +dict_table_remove_from_cache( +/*=========================*/ + dict_table_t* table) /* in, own: table */ +{ + dict_foreign_t* foreign; + dict_index_t* index; + ulint size; + + ut_ad(table); + ut_ad(mutex_own(&(dict_sys->mutex))); + ut_ad(table->magic_n == DICT_TABLE_MAGIC_N); + +#if 0 + fputs("Removing table ", stderr); + ut_print_name(stderr, table->name, ULINT_UNDEFINED); + fputs(" from dictionary cache\n", stderr); +#endif + + /* Remove the foreign constraints from the cache */ + foreign = UT_LIST_GET_LAST(table->foreign_list); + + while (foreign != NULL) { + dict_foreign_remove_from_cache(foreign); + foreign = UT_LIST_GET_LAST(table->foreign_list); + } + + /* Reset table field in referencing constraints */ + + foreign = UT_LIST_GET_FIRST(table->referenced_list); + + while (foreign != NULL) { + foreign->referenced_table = NULL; + foreign->referenced_index = NULL; + + foreign = UT_LIST_GET_NEXT(referenced_list, foreign); + } + + /* Remove the indexes from the cache */ + index = UT_LIST_GET_LAST(table->indexes); + + while (index != NULL) { + dict_index_remove_from_cache(table, index); + index = UT_LIST_GET_LAST(table->indexes); + } + + /* Remove table from the hash tables of tables */ + HASH_DELETE(dict_table_t, name_hash, dict_sys->table_hash, + ut_fold_string(table->name), table); + HASH_DELETE(dict_table_t, id_hash, dict_sys->table_id_hash, + ut_fold_dulint(table->id), table); + + /* Remove table from LRU list of tables */ + UT_LIST_REMOVE(table_LRU, dict_sys->table_LRU, table); + + size = mem_heap_get_size(table->heap); + + ut_ad(dict_sys->size >= size); + + dict_sys->size -= size; + + dict_mem_table_free(table); +} + +/******************************************************************** +If the given column name is reserved for InnoDB system columns, return +TRUE. */ +UNIV_INTERN +ibool +dict_col_name_is_reserved( +/*======================*/ + /* out: TRUE if name is reserved */ + const char* name) /* in: column name */ +{ + /* This check reminds that if a new system column is added to + the program, it should be dealt with here. */ +#if DATA_N_SYS_COLS != 3 +#error "DATA_N_SYS_COLS != 3" +#endif + + static const char* reserved_names[] = { + "DB_ROW_ID", "DB_TRX_ID", "DB_ROLL_PTR" + }; + + ulint i; + + for (i = 0; i < UT_ARR_SIZE(reserved_names); i++) { + if (strcmp(name, reserved_names[i]) == 0) { + + return(TRUE); + } + } + + return(FALSE); +} + +/******************************************************************** +If an undo log record for this table might not fit on a single page, +return TRUE. */ +static +ibool +dict_index_too_big_for_undo( +/*========================*/ + /* out: TRUE if the undo log + record could become too big */ + const dict_table_t* table, /* in: table */ + const dict_index_t* new_index) /* in: index */ +{ + /* Make sure that all column prefixes will fit in the undo log record + in trx_undo_page_report_modify() right after trx_undo_page_init(). */ + + ulint i; + const dict_index_t* clust_index + = dict_table_get_first_index(table); + ulint undo_page_len + = TRX_UNDO_PAGE_HDR - TRX_UNDO_PAGE_HDR_SIZE + + 2 /* next record pointer */ + + 1 /* type_cmpl */ + + 11 /* trx->undo_no */ - 11 /* table->id */ + + 1 /* rec_get_info_bits() */ + + 11 /* DB_TRX_ID */ + + 11 /* DB_ROLL_PTR */ + + 10 + FIL_PAGE_DATA_END /* trx_undo_left() */ + + 2/* pointer to previous undo log record */; + + if (UNIV_UNLIKELY(!clust_index)) { + ut_a(dict_index_is_clust(new_index)); + clust_index = new_index; + } + + /* Add the size of the ordering columns in the + clustered index. */ + for (i = 0; i < clust_index->n_uniq; i++) { + const dict_col_t* col + = dict_index_get_nth_col(clust_index, i); + + /* Use the maximum output size of + mach_write_compressed(), although the encoded + length should always fit in 2 bytes. */ + undo_page_len += 5 + dict_col_get_max_size(col); + } + + /* Add the old values of the columns to be updated. + First, the amount and the numbers of the columns. + These are written by mach_write_compressed() whose + maximum output length is 5 bytes. However, given that + the quantities are below REC_MAX_N_FIELDS (10 bits), + the maximum length is 2 bytes per item. */ + undo_page_len += 2 * (dict_table_get_n_cols(table) + 1); + + for (i = 0; i < clust_index->n_def; i++) { + const dict_col_t* col + = dict_index_get_nth_col(clust_index, i); + ulint max_size + = dict_col_get_max_size(col); + ulint fixed_size + = dict_col_get_fixed_size(col); + + if (fixed_size) { + /* Fixed-size columns are stored locally. */ + max_size = fixed_size; + } else if (max_size <= BTR_EXTERN_FIELD_REF_SIZE * 2) { + /* Short columns are stored locally. */ + } else if (!col->ord_part) { + /* See if col->ord_part would be set + because of new_index. */ + ulint j; + + for (j = 0; j < new_index->n_uniq; j++) { + if (dict_index_get_nth_col( + new_index, j) == col) { + + goto is_ord_part; + } + } + + /* This is not an ordering column in any index. + Thus, it can be stored completely externally. */ + max_size = BTR_EXTERN_FIELD_REF_SIZE; + } else { +is_ord_part: + /* This is an ordering column in some index. + A long enough prefix must be written to the + undo log. See trx_undo_page_fetch_ext(). */ + + if (max_size > REC_MAX_INDEX_COL_LEN) { + max_size = REC_MAX_INDEX_COL_LEN; + } + + max_size += BTR_EXTERN_FIELD_REF_SIZE; + } + + undo_page_len += 5 + max_size; + } + + return(undo_page_len >= UNIV_PAGE_SIZE); +} + +/******************************************************************** +If a record of this index might not fit on a single B-tree page, +return TRUE. */ +static +ibool +dict_index_too_big_for_tree( +/*========================*/ + /* out: TRUE if the index + record could become too big */ + const dict_table_t* table, /* in: table */ + const dict_index_t* new_index) /* in: index */ +{ + ulint zip_size; + ulint comp; + ulint i; + /* maximum possible storage size of a record */ + ulint rec_max_size; + /* maximum allowed size of a record on a leaf page */ + ulint page_rec_max; + /* maximum allowed size of a node pointer record */ + ulint page_ptr_max; + + comp = dict_table_is_comp(table); + zip_size = dict_table_zip_size(table); + + if (zip_size && zip_size < UNIV_PAGE_SIZE) { + /* On a compressed page, two records must fit in the + uncompressed page modification log. On compressed + pages with zip_size == UNIV_PAGE_SIZE, this limit will + never be reached. */ + ut_ad(comp); + /* The maximum allowed record size is the size of + an empty page, minus a byte for recoding the heap + number in the page modification log. The maximum + allowed node pointer size is half that. */ + page_rec_max = page_zip_empty_size(new_index->n_fields, + zip_size) - 1; + page_ptr_max = page_rec_max / 2; + /* On a compressed page, there is a two-byte entry in + the dense page directory for every record. But there + is no record header. */ + rec_max_size = 2; + } else { + /* The maximum allowed record size is half a B-tree + page. No additional sparse page directory entry will + be generated for the first few user records. */ + page_rec_max = page_get_free_space_of_empty(comp) / 2; + page_ptr_max = page_rec_max; + /* Each record has a header. */ + rec_max_size = comp + ? REC_N_NEW_EXTRA_BYTES + : REC_N_OLD_EXTRA_BYTES; + } + + if (comp) { + /* Include the "null" flags in the + maximum possible record size. */ + rec_max_size += UT_BITS_IN_BYTES(new_index->n_nullable); + } else { + /* For each column, include a 2-byte offset and a + "null" flag. The 1-byte format is only used in short + records that do not contain externally stored columns. + Such records could never exceed the page limit, even + when using the 2-byte format. */ + rec_max_size += 2 * new_index->n_fields; + } + + /* Compute the maximum possible record size. */ + for (i = 0; i < new_index->n_fields; i++) { + const dict_field_t* field + = dict_index_get_nth_field(new_index, i); + const dict_col_t* col + = dict_field_get_col(field); + ulint field_max_size; + ulint field_ext_max_size; + + /* In dtuple_convert_big_rec(), variable-length columns + that are longer than BTR_EXTERN_FIELD_REF_SIZE * 2 + may be chosen for external storage. + + Fixed-length columns, and all columns of secondary + index records are always stored inline. */ + + /* Determine the maximum length of the index field. + The field_ext_max_size should be computed as the worst + case in rec_get_converted_size_comp() for + REC_STATUS_ORDINARY records. */ + + field_max_size = dict_col_get_fixed_size(col); + if (field_max_size) { + /* dict_index_add_col() should guarantee this */ + ut_ad(!field->prefix_len + || field->fixed_len == field->prefix_len); + /* Fixed lengths are not encoded + in ROW_FORMAT=COMPACT. */ + field_ext_max_size = 0; + goto add_field_size; + } + + field_max_size = dict_col_get_max_size(col); + field_ext_max_size = field_max_size < 256 ? 1 : 2; + + if (field->prefix_len) { + if (field->prefix_len < field_max_size) { + field_max_size = field->prefix_len; + } + } else if (field_max_size > BTR_EXTERN_FIELD_REF_SIZE * 2 + && dict_index_is_clust(new_index)) { + + /* In the worst case, we have a locally stored + column of BTR_EXTERN_FIELD_REF_SIZE * 2 bytes. + The length can be stored in one byte. If the + column were stored externally, the lengths in + the clustered index page would be + BTR_EXTERN_FIELD_REF_SIZE and 2. */ + field_max_size = BTR_EXTERN_FIELD_REF_SIZE * 2; + field_ext_max_size = 1; + } + + if (comp) { + /* Add the extra size for ROW_FORMAT=COMPACT. + For ROW_FORMAT=REDUNDANT, these bytes were + added to rec_max_size before this loop. */ + rec_max_size += field_ext_max_size; + } +add_field_size: + rec_max_size += field_max_size; + + /* Check the size limit on leaf pages. */ + if (UNIV_UNLIKELY(rec_max_size >= page_rec_max)) { + + return(TRUE); + } + + /* Check the size limit on non-leaf pages. Records + stored in non-leaf B-tree pages consist of the unique + columns of the record (the key columns of the B-tree) + and a node pointer field. When we have processed the + unique columns, rec_max_size equals the size of the + node pointer record minus the node pointer column. */ + if (i + 1 == dict_index_get_n_unique_in_tree(new_index) + && rec_max_size + REC_NODE_PTR_SIZE >= page_ptr_max) { + + return(TRUE); + } + } + + return(FALSE); +} + +/************************************************************************** +Adds an index to the dictionary cache. */ +UNIV_INTERN +ulint +dict_index_add_to_cache( +/*====================*/ + /* out: DB_SUCCESS or DB_TOO_BIG_RECORD */ + dict_table_t* table, /* in: table on which the index is */ + dict_index_t* index, /* in, own: index; NOTE! The index memory + object is freed in this function! */ + ulint page_no,/* in: root page number of the index */ + ibool strict) /* in: TRUE=refuse to create the index + if records could be too big to fit in + an B-tree page */ +{ + dict_index_t* new_index; + ulint n_ord; + ulint i; + + ut_ad(index); + ut_ad(mutex_own(&(dict_sys->mutex))); + ut_ad(index->n_def == index->n_fields); + ut_ad(index->magic_n == DICT_INDEX_MAGIC_N); + + ut_ad(mem_heap_validate(index->heap)); + ut_a(!dict_index_is_clust(index) + || UT_LIST_GET_LEN(table->indexes) == 0); + + dict_index_find_cols(table, index); + + /* Build the cache internal representation of the index, + containing also the added system fields */ + + if (dict_index_is_clust(index)) { + new_index = dict_index_build_internal_clust(table, index); + } else { + new_index = dict_index_build_internal_non_clust(table, index); + } + + /* Set the n_fields value in new_index to the actual defined + number of fields in the cache internal representation */ + + new_index->n_fields = new_index->n_def; + + if (strict && dict_index_too_big_for_tree(table, new_index)) { +too_big: + dict_mem_index_free(new_index); + dict_mem_index_free(index); + return(DB_TOO_BIG_RECORD); + } + + if (UNIV_UNLIKELY(index->type & DICT_UNIVERSAL)) { + n_ord = new_index->n_fields; + } else { + n_ord = new_index->n_uniq; + } + + switch (dict_table_get_format(table)) { + case DICT_TF_FORMAT_51: + /* ROW_FORMAT=REDUNDANT and ROW_FORMAT=COMPACT store + prefixes of externally stored columns locally within + the record. There are no special considerations for + the undo log record size. */ + goto undo_size_ok; + + case DICT_TF_FORMAT_ZIP: + /* In ROW_FORMAT=DYNAMIC and ROW_FORMAT=COMPRESSED, + column prefix indexes require that prefixes of + externally stored columns are written to the undo log. + This may make the undo log record bigger than the + record on the B-tree page. The maximum size of an + undo log record is the page size. That must be + checked for below. */ + break; + +#if DICT_TF_FORMAT_ZIP != DICT_TF_FORMAT_MAX +# error "DICT_TF_FORMAT_ZIP != DICT_TF_FORMAT_MAX" +#endif + } + + for (i = 0; i < n_ord; i++) { + const dict_field_t* field + = dict_index_get_nth_field(new_index, i); + const dict_col_t* col + = dict_field_get_col(field); + + /* In dtuple_convert_big_rec(), variable-length columns + that are longer than BTR_EXTERN_FIELD_REF_SIZE * 2 + may be chosen for external storage. If the column appears + in an ordering column of an index, a longer prefix of + REC_MAX_INDEX_COL_LEN will be copied to the undo log + by trx_undo_page_report_modify() and + trx_undo_page_fetch_ext(). It suffices to check the + capacity of the undo log whenever new_index includes + a column prefix on a column that may be stored externally. */ + + if (field->prefix_len /* prefix index */ + && !col->ord_part /* not yet ordering column */ + && !dict_col_get_fixed_size(col) /* variable-length */ + && dict_col_get_max_size(col) + > BTR_EXTERN_FIELD_REF_SIZE * 2 /* long enough */) { + + if (dict_index_too_big_for_undo(table, new_index)) { + /* An undo log record might not fit in + a single page. Refuse to create this index. */ + + goto too_big; + } + + break; + } + } + +undo_size_ok: + /* Flag the ordering columns */ + + for (i = 0; i < n_ord; i++) { + + dict_index_get_nth_field(new_index, i)->col->ord_part = 1; + } + + /* Add the new index as the last index for the table */ + + UT_LIST_ADD_LAST(indexes, table->indexes, new_index); + new_index->table = table; + new_index->table_name = table->name; + + new_index->search_info = btr_search_info_create(new_index->heap); + + new_index->stat_index_size = 1; + new_index->stat_n_leaf_pages = 1; + + new_index->page = page_no; + rw_lock_create(&new_index->lock, SYNC_INDEX_TREE); + + if (!UNIV_UNLIKELY(new_index->type & DICT_UNIVERSAL)) { + + new_index->stat_n_diff_key_vals = mem_heap_alloc( + new_index->heap, + (1 + dict_index_get_n_unique(new_index)) + * sizeof(ib_int64_t)); + /* Give some sensible values to stat_n_... in case we do + not calculate statistics quickly enough */ + + for (i = 0; i <= dict_index_get_n_unique(new_index); i++) { + + new_index->stat_n_diff_key_vals[i] = 100; + } + } + + dict_sys->size += mem_heap_get_size(new_index->heap); + + dict_mem_index_free(index); + + return(DB_SUCCESS); +} + +/************************************************************************** +Removes an index from the dictionary cache. */ +UNIV_INTERN +void +dict_index_remove_from_cache( +/*=========================*/ + dict_table_t* table, /* in/out: table */ + dict_index_t* index) /* in, own: index */ +{ + ulint size; + ulint retries = 0; + btr_search_t* info; + + ut_ad(table && index); + ut_ad(table->magic_n == DICT_TABLE_MAGIC_N); + ut_ad(index->magic_n == DICT_INDEX_MAGIC_N); + ut_ad(mutex_own(&(dict_sys->mutex))); + + /* We always create search info whether or not adaptive + hash index is enabled or not. */ + info = index->search_info; + ut_ad(info); + + /* We are not allowed to free the in-memory index struct + dict_index_t until all entries in the adaptive hash index + that point to any of the page belonging to his b-tree index + are dropped. This is so because dropping of these entries + require access to dict_index_t struct. To avoid such scenario + We keep a count of number of such pages in the search_info and + only free the dict_index_t struct when this count drops to + zero. */ + + for (;;) { + ulint ref_count = btr_search_info_get_ref_count(info); + if (ref_count == 0) { + break; + } + + /* Sleep for 10ms before trying again. */ + os_thread_sleep(10000); + ++retries; + + if (retries % 500 == 0) { + /* No luck after 5 seconds of wait. */ + fprintf(stderr, "InnoDB: Error: Waited for" + " %lu secs for hash index" + " ref_count (%lu) to drop" + " to 0.\n" + "index: \"%s\"" + " table: \"%s\"\n", + retries/100, + ref_count, + index->name, + table->name); + } + + /* To avoid a hang here we commit suicide if the + ref_count doesn't drop to zero in 600 seconds. */ + if (retries >= 60000) { + ut_error; + } + } + + rw_lock_free(&index->lock); + + /* Remove the index from the list of indexes of the table */ + UT_LIST_REMOVE(indexes, table->indexes, index); + + size = mem_heap_get_size(index->heap); + + ut_ad(dict_sys->size >= size); + + dict_sys->size -= size; + + dict_mem_index_free(index); +} + +/*********************************************************************** +Tries to find column names for the index and sets the col field of the +index. */ +static +void +dict_index_find_cols( +/*=================*/ + dict_table_t* table, /* in: table */ + dict_index_t* index) /* in: index */ +{ + ulint i; + + ut_ad(table && index); + ut_ad(table->magic_n == DICT_TABLE_MAGIC_N); + ut_ad(mutex_own(&(dict_sys->mutex))); + + for (i = 0; i < index->n_fields; i++) { + ulint j; + dict_field_t* field = dict_index_get_nth_field(index, i); + + for (j = 0; j < table->n_cols; j++) { + if (!strcmp(dict_table_get_col_name(table, j), + field->name)) { + field->col = dict_table_get_nth_col(table, j); + + goto found; + } + } + + /* It is an error not to find a matching column. */ + ut_error; + +found: + ; + } +} + +/*********************************************************************** +Adds a column to index. */ +UNIV_INTERN +void +dict_index_add_col( +/*===============*/ + dict_index_t* index, /* in/out: index */ + const dict_table_t* table, /* in: table */ + dict_col_t* col, /* in: column */ + ulint prefix_len) /* in: column prefix length */ +{ + dict_field_t* field; + const char* col_name; + + col_name = dict_table_get_col_name(table, dict_col_get_no(col)); + + dict_mem_index_add_field(index, col_name, prefix_len); + + field = dict_index_get_nth_field(index, index->n_def - 1); + + field->col = col; + field->fixed_len = (unsigned int) dict_col_get_fixed_size(col); + + if (prefix_len && field->fixed_len > prefix_len) { + field->fixed_len = (unsigned int) prefix_len; + } + + /* Long fixed-length fields that need external storage are treated as + variable-length fields, so that the extern flag can be embedded in + the length word. */ + + if (field->fixed_len > DICT_MAX_INDEX_COL_LEN) { + field->fixed_len = 0; + } +#if DICT_MAX_INDEX_COL_LEN != 768 + /* The comparison limit above must be constant. If it were + changed, the disk format of some fixed-length columns would + change, which would be a disaster. */ +# error "DICT_MAX_INDEX_COL_LEN != 768" +#endif + + if (!(col->prtype & DATA_NOT_NULL)) { + index->n_nullable++; + } +} + +/*********************************************************************** +Copies fields contained in index2 to index1. */ +static +void +dict_index_copy( +/*============*/ + dict_index_t* index1, /* in: index to copy to */ + dict_index_t* index2, /* in: index to copy from */ + const dict_table_t* table, /* in: table */ + ulint start, /* in: first position to copy */ + ulint end) /* in: last position to copy */ +{ + dict_field_t* field; + ulint i; + + /* Copy fields contained in index2 */ + + for (i = start; i < end; i++) { + + field = dict_index_get_nth_field(index2, i); + dict_index_add_col(index1, table, field->col, + field->prefix_len); + } +} + +/*********************************************************************** +Copies types of fields contained in index to tuple. */ +UNIV_INTERN +void +dict_index_copy_types( +/*==================*/ + dtuple_t* tuple, /* in/out: data tuple */ + const dict_index_t* index, /* in: index */ + ulint n_fields) /* in: number of + field types to copy */ +{ + ulint i; + + if (UNIV_UNLIKELY(index->type & DICT_UNIVERSAL)) { + dtuple_set_types_binary(tuple, n_fields); + + return; + } + + for (i = 0; i < n_fields; i++) { + const dict_field_t* ifield; + dtype_t* dfield_type; + + ifield = dict_index_get_nth_field(index, i); + dfield_type = dfield_get_type(dtuple_get_nth_field(tuple, i)); + dict_col_copy_type(dict_field_get_col(ifield), dfield_type); + } +} + +/*********************************************************************** +Copies types of columns contained in table to tuple and sets all +fields of the tuple to the SQL NULL value. This function should +be called right after dtuple_create(). */ +UNIV_INTERN +void +dict_table_copy_types( +/*==================*/ + dtuple_t* tuple, /* in/out: data tuple */ + const dict_table_t* table) /* in: table */ +{ + ulint i; + + for (i = 0; i < dtuple_get_n_fields(tuple); i++) { + + dfield_t* dfield = dtuple_get_nth_field(tuple, i); + dtype_t* dtype = dfield_get_type(dfield); + + dfield_set_null(dfield); + dict_col_copy_type(dict_table_get_nth_col(table, i), dtype); + } +} + +/*********************************************************************** +Builds the internal dictionary cache representation for a clustered +index, containing also system fields not defined by the user. */ +static +dict_index_t* +dict_index_build_internal_clust( +/*============================*/ + /* out, own: the internal + representation of the clustered + index */ + const dict_table_t* table, /* in: table */ + dict_index_t* index) /* in: user representation of + a clustered index */ +{ + dict_index_t* new_index; + dict_field_t* field; + ulint fixed_size; + ulint trx_id_pos; + ulint i; + ibool* indexed; + + ut_ad(table && index); + ut_ad(dict_index_is_clust(index)); + ut_ad(mutex_own(&(dict_sys->mutex))); + ut_ad(table->magic_n == DICT_TABLE_MAGIC_N); + + /* Create a new index object with certainly enough fields */ + new_index = dict_mem_index_create(table->name, + index->name, table->space, + index->type, + index->n_fields + table->n_cols); + + /* Copy other relevant data from the old index struct to the new + struct: it inherits the values */ + + new_index->n_user_defined_cols = index->n_fields; + + new_index->id = index->id; + + /* Copy the fields of index */ + dict_index_copy(new_index, index, table, 0, index->n_fields); + + if (UNIV_UNLIKELY(index->type & DICT_UNIVERSAL)) { + /* No fixed number of fields determines an entry uniquely */ + + new_index->n_uniq = REC_MAX_N_FIELDS; + + } else if (dict_index_is_unique(index)) { + /* Only the fields defined so far are needed to identify + the index entry uniquely */ + + new_index->n_uniq = new_index->n_def; + } else { + /* Also the row id is needed to identify the entry */ + new_index->n_uniq = 1 + new_index->n_def; + } + + new_index->trx_id_offset = 0; + + if (!dict_index_is_ibuf(index)) { + /* Add system columns, trx id first */ + + trx_id_pos = new_index->n_def; + +#if DATA_ROW_ID != 0 +# error "DATA_ROW_ID != 0" +#endif +#if DATA_TRX_ID != 1 +# error "DATA_TRX_ID != 1" +#endif +#if DATA_ROLL_PTR != 2 +# error "DATA_ROLL_PTR != 2" +#endif + + if (!dict_index_is_unique(index)) { + dict_index_add_col(new_index, table, + dict_table_get_sys_col( + table, DATA_ROW_ID), + 0); + trx_id_pos++; + } + + dict_index_add_col(new_index, table, + dict_table_get_sys_col(table, DATA_TRX_ID), + 0); + + dict_index_add_col(new_index, table, + dict_table_get_sys_col(table, + DATA_ROLL_PTR), + 0); + + for (i = 0; i < trx_id_pos; i++) { + + fixed_size = dict_col_get_fixed_size( + dict_index_get_nth_col(new_index, i)); + + if (fixed_size == 0) { + new_index->trx_id_offset = 0; + + break; + } + + if (dict_index_get_nth_field(new_index, i)->prefix_len + > 0) { + new_index->trx_id_offset = 0; + + break; + } + + new_index->trx_id_offset += (unsigned int) fixed_size; + } + + } + + /* Remember the table columns already contained in new_index */ + indexed = mem_zalloc(table->n_cols * sizeof *indexed); + + /* Mark the table columns already contained in new_index */ + for (i = 0; i < new_index->n_def; i++) { + + field = dict_index_get_nth_field(new_index, i); + + /* If there is only a prefix of the column in the index + field, do not mark the column as contained in the index */ + + if (field->prefix_len == 0) { + + indexed[field->col->ind] = TRUE; + } + } + + /* Add to new_index non-system columns of table not yet included + there */ + for (i = 0; i + DATA_N_SYS_COLS < (ulint) table->n_cols; i++) { + + dict_col_t* col = dict_table_get_nth_col(table, i); + ut_ad(col->mtype != DATA_SYS); + + if (!indexed[col->ind]) { + dict_index_add_col(new_index, table, col, 0); + } + } + + mem_free(indexed); + + ut_ad(dict_index_is_ibuf(index) + || (UT_LIST_GET_LEN(table->indexes) == 0)); + + new_index->cached = TRUE; + + return(new_index); +} + +/*********************************************************************** +Builds the internal dictionary cache representation for a non-clustered +index, containing also system fields not defined by the user. */ +static +dict_index_t* +dict_index_build_internal_non_clust( +/*================================*/ + /* out, own: the internal + representation of the non-clustered + index */ + const dict_table_t* table, /* in: table */ + dict_index_t* index) /* in: user representation of + a non-clustered index */ +{ + dict_field_t* field; + dict_index_t* new_index; + dict_index_t* clust_index; + ulint i; + ibool* indexed; + + ut_ad(table && index); + ut_ad(!dict_index_is_clust(index)); + ut_ad(mutex_own(&(dict_sys->mutex))); + ut_ad(table->magic_n == DICT_TABLE_MAGIC_N); + + /* The clustered index should be the first in the list of indexes */ + clust_index = UT_LIST_GET_FIRST(table->indexes); + + ut_ad(clust_index); + ut_ad(dict_index_is_clust(clust_index)); + ut_ad(!(clust_index->type & DICT_UNIVERSAL)); + + /* Create a new index */ + new_index = dict_mem_index_create( + table->name, index->name, index->space, index->type, + index->n_fields + 1 + clust_index->n_uniq); + + /* Copy other relevant data from the old index + struct to the new struct: it inherits the values */ + + new_index->n_user_defined_cols = index->n_fields; + + new_index->id = index->id; + + /* Copy fields from index to new_index */ + dict_index_copy(new_index, index, table, 0, index->n_fields); + + /* Remember the table columns already contained in new_index */ + indexed = mem_zalloc(table->n_cols * sizeof *indexed); + + /* Mark the table columns already contained in new_index */ + for (i = 0; i < new_index->n_def; i++) { + + field = dict_index_get_nth_field(new_index, i); + + /* If there is only a prefix of the column in the index + field, do not mark the column as contained in the index */ + + if (field->prefix_len == 0) { + + indexed[field->col->ind] = TRUE; + } + } + + /* Add to new_index the columns necessary to determine the clustered + index entry uniquely */ + + for (i = 0; i < clust_index->n_uniq; i++) { + + field = dict_index_get_nth_field(clust_index, i); + + if (!indexed[field->col->ind]) { + dict_index_add_col(new_index, table, field->col, + field->prefix_len); + } + } + + mem_free(indexed); + + if (dict_index_is_unique(index)) { + new_index->n_uniq = index->n_fields; + } else { + new_index->n_uniq = new_index->n_def; + } + + /* Set the n_fields value in new_index to the actual defined + number of fields */ + + new_index->n_fields = new_index->n_def; + + new_index->cached = TRUE; + + return(new_index); +} + +/*====================== FOREIGN KEY PROCESSING ========================*/ + +/************************************************************************* +Checks if a table is referenced by foreign keys. */ +UNIV_INTERN +ibool +dict_table_is_referenced_by_foreign_key( +/*====================================*/ + /* out: TRUE if table is referenced + by a foreign key */ + const dict_table_t* table) /* in: InnoDB table */ +{ + return(UT_LIST_GET_LEN(table->referenced_list) > 0); +} + +/************************************************************************* +Check if the index is referenced by a foreign key, if TRUE return foreign +else return NULL */ +UNIV_INTERN +dict_foreign_t* +dict_table_get_referenced_constraint( +/*=================================*/ + /* out: pointer to foreign key struct if index + is defined for foreign key, otherwise NULL */ + dict_table_t* table, /* in: InnoDB table */ + dict_index_t* index) /* in: InnoDB index */ +{ + dict_foreign_t* foreign; + + ut_ad(index != NULL); + ut_ad(table != NULL); + + for (foreign = UT_LIST_GET_FIRST(table->referenced_list); + foreign; + foreign = UT_LIST_GET_NEXT(referenced_list, foreign)) { + + if (foreign->referenced_index == index) { + + return(foreign); + } + } + + return(NULL); +} + +/************************************************************************* +Checks if a index is defined for a foreign key constraint. Index is a part +of a foreign key constraint if the index is referenced by foreign key +or index is a foreign key index. */ +UNIV_INTERN +dict_foreign_t* +dict_table_get_foreign_constraint( +/*==============================*/ + /* out: pointer to foreign key struct if index + is defined for foreign key, otherwise NULL */ + dict_table_t* table, /* in: InnoDB table */ + dict_index_t* index) /* in: InnoDB index */ +{ + dict_foreign_t* foreign; + + ut_ad(index != NULL); + ut_ad(table != NULL); + + for (foreign = UT_LIST_GET_FIRST(table->foreign_list); + foreign; + foreign = UT_LIST_GET_NEXT(foreign_list, foreign)) { + + if (foreign->foreign_index == index + || foreign->referenced_index == index) { + + return(foreign); + } + } + + return(NULL); +} + +/************************************************************************* +Frees a foreign key struct. */ +static +void +dict_foreign_free( +/*==============*/ + dict_foreign_t* foreign) /* in, own: foreign key struct */ +{ + mem_heap_free(foreign->heap); +} + +/************************************************************************** +Removes a foreign constraint struct from the dictionary cache. */ +static +void +dict_foreign_remove_from_cache( +/*===========================*/ + dict_foreign_t* foreign) /* in, own: foreign constraint */ +{ + ut_ad(mutex_own(&(dict_sys->mutex))); + ut_a(foreign); + + if (foreign->referenced_table) { + UT_LIST_REMOVE(referenced_list, + foreign->referenced_table->referenced_list, + foreign); + } + + if (foreign->foreign_table) { + UT_LIST_REMOVE(foreign_list, + foreign->foreign_table->foreign_list, + foreign); + } + + dict_foreign_free(foreign); +} + +#ifndef UNIV_HOTBACKUP +/************************************************************************** +Looks for the foreign constraint from the foreign and referenced lists +of a table. */ +static +dict_foreign_t* +dict_foreign_find( +/*==============*/ + /* out: foreign constraint */ + dict_table_t* table, /* in: table object */ + const char* id) /* in: foreign constraint id */ +{ + dict_foreign_t* foreign; + + ut_ad(mutex_own(&(dict_sys->mutex))); + + foreign = UT_LIST_GET_FIRST(table->foreign_list); + + while (foreign) { + if (ut_strcmp(id, foreign->id) == 0) { + + return(foreign); + } + + foreign = UT_LIST_GET_NEXT(foreign_list, foreign); + } + + foreign = UT_LIST_GET_FIRST(table->referenced_list); + + while (foreign) { + if (ut_strcmp(id, foreign->id) == 0) { + + return(foreign); + } + + foreign = UT_LIST_GET_NEXT(referenced_list, foreign); + } + + return(NULL); +} + +/************************************************************************* +Tries to find an index whose first fields are the columns in the array, +in the same order and is not marked for deletion and is not the same +as types_idx. */ +static +dict_index_t* +dict_foreign_find_index( +/*====================*/ + /* out: matching index, NULL if not found */ + dict_table_t* table, /* in: table */ + const char** columns,/* in: array of column names */ + ulint n_cols, /* in: number of columns */ + dict_index_t* types_idx, /* in: NULL or an index to whose types the + column types must match */ + ibool check_charsets, + /* in: whether to check charsets. + only has an effect if types_idx != NULL */ + ulint check_null) + /* in: nonzero if none of the columns must + be declared NOT NULL */ +{ + dict_index_t* index; + + index = dict_table_get_first_index(table); + + while (index != NULL) { + /* Ignore matches that refer to the same instance + or the index is to be dropped */ + if (index->to_be_dropped || types_idx == index) { + + goto next_rec; + + } else if (dict_index_get_n_fields(index) >= n_cols) { + ulint i; + + for (i = 0; i < n_cols; i++) { + dict_field_t* field; + const char* col_name; + + field = dict_index_get_nth_field(index, i); + + col_name = dict_table_get_col_name( + table, dict_col_get_no(field->col)); + + if (field->prefix_len != 0) { + /* We do not accept column prefix + indexes here */ + + break; + } + + if (0 != innobase_strcasecmp(columns[i], + col_name)) { + break; + } + + if (check_null + && (field->col->prtype & DATA_NOT_NULL)) { + + return(NULL); + } + + if (types_idx && !cmp_cols_are_equal( + dict_index_get_nth_col(index, i), + dict_index_get_nth_col(types_idx, + i), + check_charsets)) { + + break; + } + } + + if (i == n_cols) { + /* We found a matching index */ + + return(index); + } + } + +next_rec: + index = dict_table_get_next_index(index); + } + + return(NULL); +} + +/************************************************************************** +Find an index that is equivalent to the one passed in and is not marked +for deletion. */ +UNIV_INTERN +dict_index_t* +dict_foreign_find_equiv_index( +/*==========================*/ + /* out: index equivalent to + foreign->foreign_index, or NULL */ + dict_foreign_t* foreign)/* in: foreign key */ +{ + ut_a(foreign != NULL); + + /* Try to find an index which contains the columns as the + first fields and in the right order, and the types are the + same as in foreign->foreign_index */ + + return(dict_foreign_find_index( + foreign->foreign_table, + foreign->foreign_col_names, foreign->n_fields, + foreign->foreign_index, TRUE, /* check types */ + FALSE/* allow columns to be NULL */)); +} + +/************************************************************************** +Returns an index object by matching on the name and column names and +if more than one index matches return the index with the max id */ +UNIV_INTERN +dict_index_t* +dict_table_get_index_by_max_id( +/*===========================*/ + /* out: matching index, NULL if not found */ + dict_table_t* table, /* in: table */ + const char* name, /* in: the index name to find */ + const char** columns,/* in: array of column names */ + ulint n_cols) /* in: number of columns */ +{ + dict_index_t* index; + dict_index_t* found; + + found = NULL; + index = dict_table_get_first_index(table); + + while (index != NULL) { + if (ut_strcmp(index->name, name) == 0 + && dict_index_get_n_ordering_defined_by_user(index) + == n_cols) { + + ulint i; + + for (i = 0; i < n_cols; i++) { + dict_field_t* field; + const char* col_name; + + field = dict_index_get_nth_field(index, i); + + col_name = dict_table_get_col_name( + table, dict_col_get_no(field->col)); + + if (0 != innobase_strcasecmp( + columns[i], col_name)) { + + break; + } + } + + if (i == n_cols) { + /* We found a matching index, select + the index with the higher id*/ + + if (!found + || ut_dulint_cmp(index->id, found->id) > 0) { + + found = index; + } + } + } + + index = dict_table_get_next_index(index); + } + + return(found); +} + +/************************************************************************** +Report an error in a foreign key definition. */ +static +void +dict_foreign_error_report_low( +/*==========================*/ + FILE* file, /* in: output stream */ + const char* name) /* in: table name */ +{ + rewind(file); + ut_print_timestamp(file); + fprintf(file, " Error in foreign key constraint of table %s:\n", + name); +} + +/************************************************************************** +Report an error in a foreign key definition. */ +static +void +dict_foreign_error_report( +/*======================*/ + FILE* file, /* in: output stream */ + dict_foreign_t* fk, /* in: foreign key constraint */ + const char* msg) /* in: the error message */ +{ + mutex_enter(&dict_foreign_err_mutex); + dict_foreign_error_report_low(file, fk->foreign_table_name); + fputs(msg, file); + fputs(" Constraint:\n", file); + dict_print_info_on_foreign_key_in_create_format(file, NULL, fk, TRUE); + putc('\n', file); + if (fk->foreign_index) { + fputs("The index in the foreign key in table is ", file); + ut_print_name(file, NULL, FALSE, fk->foreign_index->name); + fputs("\n" + "See http://dev.mysql.com/doc/refman/5.1/en/" + "innodb-foreign-key-constraints.html\n" + "for correct foreign key definition.\n", + file); + } + mutex_exit(&dict_foreign_err_mutex); +} + +/************************************************************************** +Adds a foreign key constraint object to the dictionary cache. May free +the object if there already is an object with the same identifier in. +At least one of the foreign table and the referenced table must already +be in the dictionary cache! */ +UNIV_INTERN +ulint +dict_foreign_add_to_cache( +/*======================*/ + /* out: DB_SUCCESS or error code */ + dict_foreign_t* foreign, /* in, own: foreign key constraint */ + ibool check_charsets) /* in: TRUE=check charset + compatibility */ +{ + dict_table_t* for_table; + dict_table_t* ref_table; + dict_foreign_t* for_in_cache = NULL; + dict_index_t* index; + ibool added_to_referenced_list= FALSE; + FILE* ef = dict_foreign_err_file; + + ut_ad(mutex_own(&(dict_sys->mutex))); + + for_table = dict_table_check_if_in_cache_low( + foreign->foreign_table_name); + + ref_table = dict_table_check_if_in_cache_low( + foreign->referenced_table_name); + ut_a(for_table || ref_table); + + if (for_table) { + for_in_cache = dict_foreign_find(for_table, foreign->id); + } + + if (!for_in_cache && ref_table) { + for_in_cache = dict_foreign_find(ref_table, foreign->id); + } + + if (for_in_cache) { + /* Free the foreign object */ + mem_heap_free(foreign->heap); + } else { + for_in_cache = foreign; + } + + if (for_in_cache->referenced_table == NULL && ref_table) { + index = dict_foreign_find_index( + ref_table, + for_in_cache->referenced_col_names, + for_in_cache->n_fields, for_in_cache->foreign_index, + check_charsets, FALSE); + + if (index == NULL) { + dict_foreign_error_report( + ef, for_in_cache, + "there is no index in referenced table" + " which would contain\n" + "the columns as the first columns," + " or the data types in the\n" + "referenced table do not match" + " the ones in table."); + + if (for_in_cache == foreign) { + mem_heap_free(foreign->heap); + } + + return(DB_CANNOT_ADD_CONSTRAINT); + } + + for_in_cache->referenced_table = ref_table; + for_in_cache->referenced_index = index; + UT_LIST_ADD_LAST(referenced_list, + ref_table->referenced_list, + for_in_cache); + added_to_referenced_list = TRUE; + } + + if (for_in_cache->foreign_table == NULL && for_table) { + index = dict_foreign_find_index( + for_table, + for_in_cache->foreign_col_names, + for_in_cache->n_fields, + for_in_cache->referenced_index, check_charsets, + for_in_cache->type + & (DICT_FOREIGN_ON_DELETE_SET_NULL + | DICT_FOREIGN_ON_UPDATE_SET_NULL)); + + if (index == NULL) { + dict_foreign_error_report( + ef, for_in_cache, + "there is no index in the table" + " which would contain\n" + "the columns as the first columns," + " or the data types in the\n" + "table do not match" + " the ones in the referenced table\n" + "or one of the ON ... SET NULL columns" + " is declared NOT NULL."); + + if (for_in_cache == foreign) { + if (added_to_referenced_list) { + UT_LIST_REMOVE( + referenced_list, + ref_table->referenced_list, + for_in_cache); + } + + mem_heap_free(foreign->heap); + } + + return(DB_CANNOT_ADD_CONSTRAINT); + } + + for_in_cache->foreign_table = for_table; + for_in_cache->foreign_index = index; + UT_LIST_ADD_LAST(foreign_list, + for_table->foreign_list, + for_in_cache); + } + + return(DB_SUCCESS); +} + +/************************************************************************* +Scans from pointer onwards. Stops if is at the start of a copy of +'string' where characters are compared without case sensitivity, and +only outside `` or "" quotes. Stops also at '\0'. */ +static +const char* +dict_scan_to( +/*=========*/ + /* out: scanned up to this */ + const char* ptr, /* in: scan from */ + const char* string) /* in: look for this */ +{ + char quote = '\0'; + + for (; *ptr; ptr++) { + if (*ptr == quote) { + /* Closing quote character: do not look for + starting quote or the keyword. */ + quote = '\0'; + } else if (quote) { + /* Within quotes: do nothing. */ + } else if (*ptr == '`' || *ptr == '"') { + /* Starting quote: remember the quote character. */ + quote = *ptr; + } else { + /* Outside quotes: look for the keyword. */ + ulint i; + for (i = 0; string[i]; i++) { + if (toupper((int)(unsigned char)(ptr[i])) + != toupper((int)(unsigned char) + (string[i]))) { + goto nomatch; + } + } + break; +nomatch: + ; + } + } + + return(ptr); +} + +/************************************************************************* +Accepts a specified string. Comparisons are case-insensitive. */ +static +const char* +dict_accept( +/*========*/ + /* out: if string was accepted, the pointer + is moved after that, else ptr is returned */ + struct charset_info_st* cs,/* in: the character set of ptr */ + const char* ptr, /* in: scan from this */ + const char* string, /* in: accept only this string as the next + non-whitespace string */ + ibool* success)/* out: TRUE if accepted */ +{ + const char* old_ptr = ptr; + const char* old_ptr2; + + *success = FALSE; + + while (my_isspace(cs, *ptr)) { + ptr++; + } + + old_ptr2 = ptr; + + ptr = dict_scan_to(ptr, string); + + if (*ptr == '\0' || old_ptr2 != ptr) { + return(old_ptr); + } + + *success = TRUE; + + return(ptr + ut_strlen(string)); +} + +/************************************************************************* +Scans an id. For the lexical definition of an 'id', see the code below. +Strips backquotes or double quotes from around the id. */ +static +const char* +dict_scan_id( +/*=========*/ + /* out: scanned to */ + struct charset_info_st* cs,/* in: the character set of ptr */ + const char* ptr, /* in: scanned to */ + mem_heap_t* heap, /* in: heap where to allocate the id + (NULL=id will not be allocated, but it + will point to string near ptr) */ + const char** id, /* out,own: the id; NULL if no id was + scannable */ + ibool table_id,/* in: TRUE=convert the allocated id + as a table name; FALSE=convert to UTF-8 */ + ibool accept_also_dot) + /* in: TRUE if also a dot can appear in a + non-quoted id; in a quoted id it can appear + always */ +{ + char quote = '\0'; + ulint len = 0; + const char* s; + char* str; + char* dst; + + *id = NULL; + + while (my_isspace(cs, *ptr)) { + ptr++; + } + + if (*ptr == '\0') { + + return(ptr); + } + + if (*ptr == '`' || *ptr == '"') { + quote = *ptr++; + } + + s = ptr; + + if (quote) { + for (;;) { + if (!*ptr) { + /* Syntax error */ + return(ptr); + } + if (*ptr == quote) { + ptr++; + if (*ptr != quote) { + break; + } + } + ptr++; + len++; + } + } else { + while (!my_isspace(cs, *ptr) && *ptr != '(' && *ptr != ')' + && (accept_also_dot || *ptr != '.') + && *ptr != ',' && *ptr != '\0') { + + ptr++; + } + + len = ptr - s; + } + + if (UNIV_UNLIKELY(!heap)) { + /* no heap given: id will point to source string */ + *id = s; + return(ptr); + } + + if (quote) { + char* d; + str = d = mem_heap_alloc(heap, len + 1); + while (len--) { + if ((*d++ = *s++) == quote) { + s++; + } + } + *d++ = 0; + len = d - str; + ut_ad(*s == quote); + ut_ad(s + 1 == ptr); + } else { + str = mem_heap_strdupl(heap, s, len); + } + + if (!table_id) { +convert_id: + /* Convert the identifier from connection character set + to UTF-8. */ + len = 3 * len + 1; + *id = dst = mem_heap_alloc(heap, len); + + innobase_convert_from_id(cs, dst, str, len); + } else if (!strncmp(str, srv_mysql50_table_name_prefix, + sizeof srv_mysql50_table_name_prefix)) { + /* This is a pre-5.1 table name + containing chars other than [A-Za-z0-9]. + Discard the prefix and use raw UTF-8 encoding. */ + str += sizeof srv_mysql50_table_name_prefix; + len -= sizeof srv_mysql50_table_name_prefix; + goto convert_id; + } else { + /* Encode using filename-safe characters. */ + len = 5 * len + 1; + *id = dst = mem_heap_alloc(heap, len); + + innobase_convert_from_table_id(cs, dst, str, len); + } + + return(ptr); +} + +/************************************************************************* +Tries to scan a column name. */ +static +const char* +dict_scan_col( +/*==========*/ + /* out: scanned to */ + struct charset_info_st* cs, /* in: the character set of ptr */ + const char* ptr, /* in: scanned to */ + ibool* success,/* out: TRUE if success */ + dict_table_t* table, /* in: table in which the column is */ + const dict_col_t** column, /* out: pointer to column if success */ + mem_heap_t* heap, /* in: heap where to allocate */ + const char** name) /* out,own: the column name; + NULL if no name was scannable */ +{ + ulint i; + + *success = FALSE; + + ptr = dict_scan_id(cs, ptr, heap, name, FALSE, TRUE); + + if (*name == NULL) { + + return(ptr); /* Syntax error */ + } + + if (table == NULL) { + *success = TRUE; + *column = NULL; + } else { + for (i = 0; i < dict_table_get_n_cols(table); i++) { + + const char* col_name = dict_table_get_col_name( + table, i); + + if (0 == innobase_strcasecmp(col_name, *name)) { + /* Found */ + + *success = TRUE; + *column = dict_table_get_nth_col(table, i); + strcpy((char*) *name, col_name); + + break; + } + } + } + + return(ptr); +} + +/************************************************************************* +Scans a table name from an SQL string. */ +static +const char* +dict_scan_table_name( +/*=================*/ + /* out: scanned to */ + struct charset_info_st* cs,/* in: the character set of ptr */ + const char* ptr, /* in: scanned to */ + dict_table_t** table, /* out: table object or NULL */ + const char* name, /* in: foreign key table name */ + ibool* success,/* out: TRUE if ok name found */ + mem_heap_t* heap, /* in: heap where to allocate the id */ + const char** ref_name)/* out,own: the table name; + NULL if no name was scannable */ +{ + const char* database_name = NULL; + ulint database_name_len = 0; + const char* table_name = NULL; + ulint table_name_len; + const char* scan_name; + char* ref; + + *success = FALSE; + *table = NULL; + + ptr = dict_scan_id(cs, ptr, heap, &scan_name, TRUE, FALSE); + + if (scan_name == NULL) { + + return(ptr); /* Syntax error */ + } + + if (*ptr == '.') { + /* We scanned the database name; scan also the table name */ + + ptr++; + + database_name = scan_name; + database_name_len = strlen(database_name); + + ptr = dict_scan_id(cs, ptr, heap, &table_name, TRUE, FALSE); + + if (table_name == NULL) { + + return(ptr); /* Syntax error */ + } + } else { + /* To be able to read table dumps made with InnoDB-4.0.17 or + earlier, we must allow the dot separator between the database + name and the table name also to appear within a quoted + identifier! InnoDB used to print a constraint as: + ... REFERENCES `databasename.tablename` ... + starting from 4.0.18 it is + ... REFERENCES `databasename`.`tablename` ... */ + const char* s; + + for (s = scan_name; *s; s++) { + if (*s == '.') { + database_name = scan_name; + database_name_len = s - scan_name; + scan_name = ++s; + break;/* to do: multiple dots? */ + } + } + + table_name = scan_name; + } + + if (database_name == NULL) { + /* Use the database name of the foreign key table */ + + database_name = name; + database_name_len = dict_get_db_name_len(name); + } + + table_name_len = strlen(table_name); + + /* Copy database_name, '/', table_name, '\0' */ + ref = mem_heap_alloc(heap, database_name_len + table_name_len + 2); + memcpy(ref, database_name, database_name_len); + ref[database_name_len] = '/'; + memcpy(ref + database_name_len + 1, table_name, table_name_len + 1); +#ifndef __WIN__ + if (srv_lower_case_table_names) { +#endif /* !__WIN__ */ + /* The table name is always put to lower case on Windows. */ + innobase_casedn_str(ref); +#ifndef __WIN__ + } +#endif /* !__WIN__ */ + + *success = TRUE; + *ref_name = ref; + *table = dict_table_get_low(ref); + + return(ptr); +} + +/************************************************************************* +Skips one id. The id is allowed to contain also '.'. */ +static +const char* +dict_skip_word( +/*===========*/ + /* out: scanned to */ + struct charset_info_st* cs,/* in: the character set of ptr */ + const char* ptr, /* in: scanned to */ + ibool* success)/* out: TRUE if success, FALSE if just spaces + left in string or a syntax error */ +{ + const char* start; + + *success = FALSE; + + ptr = dict_scan_id(cs, ptr, NULL, &start, FALSE, TRUE); + + if (start) { + *success = TRUE; + } + + return(ptr); +} + +/************************************************************************* +Removes MySQL comments from an SQL string. A comment is either +(a) '#' to the end of the line, +(b) '--<space>' to the end of the line, or +(c) '<slash><asterisk>' till the next '<asterisk><slash>' (like the familiar +C comment syntax). */ +static +char* +dict_strip_comments( +/*================*/ + /* out, own: SQL string stripped from + comments; the caller must free this + with mem_free()! */ + const char* sql_string) /* in: SQL string */ +{ + char* str; + const char* sptr; + char* ptr; + /* unclosed quote character (0 if none) */ + char quote = 0; + + str = mem_alloc(strlen(sql_string) + 1); + + sptr = sql_string; + ptr = str; + + for (;;) { +scan_more: + if (*sptr == '\0') { + *ptr = '\0'; + + ut_a(ptr <= str + strlen(sql_string)); + + return(str); + } + + if (*sptr == quote) { + /* Closing quote character: do not look for + starting quote or comments. */ + quote = 0; + } else if (quote) { + /* Within quotes: do not look for + starting quotes or comments. */ + } else if (*sptr == '"' || *sptr == '`') { + /* Starting quote: remember the quote character. */ + quote = *sptr; + } else if (*sptr == '#' + || (sptr[0] == '-' && sptr[1] == '-' + && sptr[2] == ' ')) { + for (;;) { + /* In Unix a newline is 0x0A while in Windows + it is 0x0D followed by 0x0A */ + + if (*sptr == (char)0x0A + || *sptr == (char)0x0D + || *sptr == '\0') { + + goto scan_more; + } + + sptr++; + } + } else if (!quote && *sptr == '/' && *(sptr + 1) == '*') { + for (;;) { + if (*sptr == '*' && *(sptr + 1) == '/') { + + sptr += 2; + + goto scan_more; + } + + if (*sptr == '\0') { + + goto scan_more; + } + + sptr++; + } + } + + *ptr = *sptr; + + ptr++; + sptr++; + } +} + +/************************************************************************* +Finds the highest <number> for foreign key constraints of the table. Looks +only at the >= 4.0.18-format id's, which are of the form +databasename/tablename_ibfk_<number>. */ +static +ulint +dict_table_get_highest_foreign_id( +/*==============================*/ + /* out: highest number, 0 if table has no new + format foreign key constraints */ + dict_table_t* table) /* in: table in the dictionary memory cache */ +{ + dict_foreign_t* foreign; + char* endp; + ulint biggest_id = 0; + ulint id; + ulint len; + + ut_a(table); + + len = ut_strlen(table->name); + foreign = UT_LIST_GET_FIRST(table->foreign_list); + + while (foreign) { + if (ut_strlen(foreign->id) > ((sizeof dict_ibfk) - 1) + len + && 0 == ut_memcmp(foreign->id, table->name, len) + && 0 == ut_memcmp(foreign->id + len, + dict_ibfk, (sizeof dict_ibfk) - 1) + && foreign->id[len + ((sizeof dict_ibfk) - 1)] != '0') { + /* It is of the >= 4.0.18 format */ + + id = strtoul(foreign->id + len + + ((sizeof dict_ibfk) - 1), + &endp, 10); + if (*endp == '\0') { + ut_a(id != biggest_id); + + if (id > biggest_id) { + biggest_id = id; + } + } + } + + foreign = UT_LIST_GET_NEXT(foreign_list, foreign); + } + + return(biggest_id); +} + +/************************************************************************* +Reports a simple foreign key create clause syntax error. */ +static +void +dict_foreign_report_syntax_err( +/*===========================*/ + const char* name, /* in: table name */ + const char* start_of_latest_foreign, + /* in: start of the foreign key clause + in the SQL string */ + const char* ptr) /* in: place of the syntax error */ +{ + FILE* ef = dict_foreign_err_file; + + mutex_enter(&dict_foreign_err_mutex); + dict_foreign_error_report_low(ef, name); + fprintf(ef, "%s:\nSyntax error close to:\n%s\n", + start_of_latest_foreign, ptr); + mutex_exit(&dict_foreign_err_mutex); +} + +/************************************************************************* +Scans a table create SQL string and adds to the data dictionary the foreign +key constraints declared in the string. This function should be called after +the indexes for a table have been created. Each foreign key constraint must +be accompanied with indexes in both participating tables. The indexes are +allowed to contain more fields than mentioned in the constraint. */ +static +ulint +dict_create_foreign_constraints_low( +/*================================*/ + /* out: error code or DB_SUCCESS */ + trx_t* trx, /* in: transaction */ + mem_heap_t* heap, /* in: memory heap */ + struct charset_info_st* cs,/* in: the character set of sql_string */ + const char* sql_string, + /* in: CREATE TABLE or ALTER TABLE statement + where foreign keys are declared like: + FOREIGN KEY (a, b) REFERENCES table2(c, d), + table2 can be written also with the database + name before it: test.table2; the default + database is the database of parameter name */ + const char* name, /* in: table full name in the normalized form + database_name/table_name */ + ibool reject_fks) + /* in: if TRUE, fail with error code + DB_CANNOT_ADD_CONSTRAINT if any foreign + keys are found. */ +{ + dict_table_t* table; + dict_table_t* referenced_table; + dict_table_t* table_to_alter; + ulint highest_id_so_far = 0; + dict_index_t* index; + dict_foreign_t* foreign; + const char* ptr = sql_string; + const char* start_of_latest_foreign = sql_string; + FILE* ef = dict_foreign_err_file; + const char* constraint_name; + ibool success; + ulint error; + const char* ptr1; + const char* ptr2; + ulint i; + ulint j; + ibool is_on_delete; + ulint n_on_deletes; + ulint n_on_updates; + const dict_col_t*columns[500]; + const char* column_names[500]; + const char* referenced_table_name; + + ut_ad(mutex_own(&(dict_sys->mutex))); + + table = dict_table_get_low(name); + + if (table == NULL) { + mutex_enter(&dict_foreign_err_mutex); + dict_foreign_error_report_low(ef, name); + fprintf(ef, + "Cannot find the table in the internal" + " data dictionary of InnoDB.\n" + "Create table statement:\n%s\n", sql_string); + mutex_exit(&dict_foreign_err_mutex); + + return(DB_ERROR); + } + + /* First check if we are actually doing an ALTER TABLE, and in that + case look for the table being altered */ + + ptr = dict_accept(cs, ptr, "ALTER", &success); + + if (!success) { + + goto loop; + } + + ptr = dict_accept(cs, ptr, "TABLE", &success); + + if (!success) { + + goto loop; + } + + /* We are doing an ALTER TABLE: scan the table name we are altering */ + + ptr = dict_scan_table_name(cs, ptr, &table_to_alter, name, + &success, heap, &referenced_table_name); + if (!success) { + fprintf(stderr, + "InnoDB: Error: could not find" + " the table being ALTERED in:\n%s\n", + sql_string); + + return(DB_ERROR); + } + + /* Starting from 4.0.18 and 4.1.2, we generate foreign key id's in the + format databasename/tablename_ibfk_<number>, where <number> is local + to the table; look for the highest <number> for table_to_alter, so + that we can assign to new constraints higher numbers. */ + + /* If we are altering a temporary table, the table name after ALTER + TABLE does not correspond to the internal table name, and + table_to_alter is NULL. TODO: should we fix this somehow? */ + + if (table_to_alter == NULL) { + highest_id_so_far = 0; + } else { + highest_id_so_far = dict_table_get_highest_foreign_id( + table_to_alter); + } + + /* Scan for foreign key declarations in a loop */ +loop: + /* Scan either to "CONSTRAINT" or "FOREIGN", whichever is closer */ + + ptr1 = dict_scan_to(ptr, "CONSTRAINT"); + ptr2 = dict_scan_to(ptr, "FOREIGN"); + + constraint_name = NULL; + + if (ptr1 < ptr2) { + /* The user may have specified a constraint name. Pick it so + that we can store 'databasename/constraintname' as the id of + of the constraint to system tables. */ + ptr = ptr1; + + ptr = dict_accept(cs, ptr, "CONSTRAINT", &success); + + ut_a(success); + + if (!my_isspace(cs, *ptr) && *ptr != '"' && *ptr != '`') { + goto loop; + } + + while (my_isspace(cs, *ptr)) { + ptr++; + } + + /* read constraint name unless got "CONSTRAINT FOREIGN" */ + if (ptr != ptr2) { + ptr = dict_scan_id(cs, ptr, heap, + &constraint_name, FALSE, FALSE); + } + } else { + ptr = ptr2; + } + + if (*ptr == '\0') { + /* The proper way to reject foreign keys for temporary + tables would be to split the lexing and syntactical + analysis of foreign key clauses from the actual adding + of them, so that ha_innodb.cc could first parse the SQL + command, determine if there are any foreign keys, and + if so, immediately reject the command if the table is a + temporary one. For now, this kludge will work. */ + if (reject_fks && (UT_LIST_GET_LEN(table->foreign_list) > 0)) { + + return(DB_CANNOT_ADD_CONSTRAINT); + } + + /**********************************************************/ + /* The following call adds the foreign key constraints + to the data dictionary system tables on disk */ + + error = dict_create_add_foreigns_to_dictionary( + highest_id_so_far, table, trx); + return(error); + } + + start_of_latest_foreign = ptr; + + ptr = dict_accept(cs, ptr, "FOREIGN", &success); + + if (!success) { + goto loop; + } + + if (!my_isspace(cs, *ptr)) { + goto loop; + } + + ptr = dict_accept(cs, ptr, "KEY", &success); + + if (!success) { + goto loop; + } + + ptr = dict_accept(cs, ptr, "(", &success); + + if (!success) { + /* MySQL allows also an index id before the '('; we + skip it */ + ptr = dict_skip_word(cs, ptr, &success); + + if (!success) { + dict_foreign_report_syntax_err( + name, start_of_latest_foreign, ptr); + + return(DB_CANNOT_ADD_CONSTRAINT); + } + + ptr = dict_accept(cs, ptr, "(", &success); + + if (!success) { + /* We do not flag a syntax error here because in an + ALTER TABLE we may also have DROP FOREIGN KEY abc */ + + goto loop; + } + } + + i = 0; + + /* Scan the columns in the first list */ +col_loop1: + ut_a(i < (sizeof column_names) / sizeof *column_names); + ptr = dict_scan_col(cs, ptr, &success, table, columns + i, + heap, column_names + i); + if (!success) { + mutex_enter(&dict_foreign_err_mutex); + dict_foreign_error_report_low(ef, name); + fprintf(ef, "%s:\nCannot resolve column name close to:\n%s\n", + start_of_latest_foreign, ptr); + mutex_exit(&dict_foreign_err_mutex); + + return(DB_CANNOT_ADD_CONSTRAINT); + } + + i++; + + ptr = dict_accept(cs, ptr, ",", &success); + + if (success) { + goto col_loop1; + } + + ptr = dict_accept(cs, ptr, ")", &success); + + if (!success) { + dict_foreign_report_syntax_err( + name, start_of_latest_foreign, ptr); + return(DB_CANNOT_ADD_CONSTRAINT); + } + + /* Try to find an index which contains the columns + as the first fields and in the right order */ + + index = dict_foreign_find_index(table, column_names, i, + NULL, TRUE, FALSE); + + if (!index) { + mutex_enter(&dict_foreign_err_mutex); + dict_foreign_error_report_low(ef, name); + fputs("There is no index in table ", ef); + ut_print_name(ef, NULL, TRUE, name); + fprintf(ef, " where the columns appear\n" + "as the first columns. Constraint:\n%s\n" + "See http://dev.mysql.com/doc/refman/5.1/en/" + "innodb-foreign-key-constraints.html\n" + "for correct foreign key definition.\n", + start_of_latest_foreign); + mutex_exit(&dict_foreign_err_mutex); + + return(DB_CANNOT_ADD_CONSTRAINT); + } + ptr = dict_accept(cs, ptr, "REFERENCES", &success); + + if (!success || !my_isspace(cs, *ptr)) { + dict_foreign_report_syntax_err( + name, start_of_latest_foreign, ptr); + return(DB_CANNOT_ADD_CONSTRAINT); + } + + /* Let us create a constraint struct */ + + foreign = dict_mem_foreign_create(); + + if (constraint_name) { + ulint db_len; + + /* Catenate 'databasename/' to the constraint name specified + by the user: we conceive the constraint as belonging to the + same MySQL 'database' as the table itself. We store the name + to foreign->id. */ + + db_len = dict_get_db_name_len(table->name); + + foreign->id = mem_heap_alloc( + foreign->heap, db_len + strlen(constraint_name) + 2); + + ut_memcpy(foreign->id, table->name, db_len); + foreign->id[db_len] = '/'; + strcpy(foreign->id + db_len + 1, constraint_name); + } + + foreign->foreign_table = table; + foreign->foreign_table_name = mem_heap_strdup(foreign->heap, + table->name); + foreign->foreign_index = index; + foreign->n_fields = (unsigned int) i; + foreign->foreign_col_names = mem_heap_alloc(foreign->heap, + i * sizeof(void*)); + for (i = 0; i < foreign->n_fields; i++) { + foreign->foreign_col_names[i] = mem_heap_strdup( + foreign->heap, + dict_table_get_col_name(table, + dict_col_get_no(columns[i]))); + } + + ptr = dict_scan_table_name(cs, ptr, &referenced_table, name, + &success, heap, &referenced_table_name); + + /* Note that referenced_table can be NULL if the user has suppressed + checking of foreign key constraints! */ + + if (!success || (!referenced_table && trx->check_foreigns)) { + dict_foreign_free(foreign); + + mutex_enter(&dict_foreign_err_mutex); + dict_foreign_error_report_low(ef, name); + fprintf(ef, "%s:\nCannot resolve table name close to:\n" + "%s\n", + start_of_latest_foreign, ptr); + mutex_exit(&dict_foreign_err_mutex); + + return(DB_CANNOT_ADD_CONSTRAINT); + } + + ptr = dict_accept(cs, ptr, "(", &success); + + if (!success) { + dict_foreign_free(foreign); + dict_foreign_report_syntax_err(name, start_of_latest_foreign, + ptr); + return(DB_CANNOT_ADD_CONSTRAINT); + } + + /* Scan the columns in the second list */ + i = 0; + +col_loop2: + ptr = dict_scan_col(cs, ptr, &success, referenced_table, columns + i, + heap, column_names + i); + i++; + + if (!success) { + dict_foreign_free(foreign); + + mutex_enter(&dict_foreign_err_mutex); + dict_foreign_error_report_low(ef, name); + fprintf(ef, "%s:\nCannot resolve column name close to:\n" + "%s\n", + start_of_latest_foreign, ptr); + mutex_exit(&dict_foreign_err_mutex); + + return(DB_CANNOT_ADD_CONSTRAINT); + } + + ptr = dict_accept(cs, ptr, ",", &success); + + if (success) { + goto col_loop2; + } + + ptr = dict_accept(cs, ptr, ")", &success); + + if (!success || foreign->n_fields != i) { + dict_foreign_free(foreign); + + dict_foreign_report_syntax_err(name, start_of_latest_foreign, + ptr); + return(DB_CANNOT_ADD_CONSTRAINT); + } + + n_on_deletes = 0; + n_on_updates = 0; + +scan_on_conditions: + /* Loop here as long as we can find ON ... conditions */ + + ptr = dict_accept(cs, ptr, "ON", &success); + + if (!success) { + + goto try_find_index; + } + + ptr = dict_accept(cs, ptr, "DELETE", &success); + + if (!success) { + ptr = dict_accept(cs, ptr, "UPDATE", &success); + + if (!success) { + dict_foreign_free(foreign); + + dict_foreign_report_syntax_err( + name, start_of_latest_foreign, ptr); + return(DB_CANNOT_ADD_CONSTRAINT); + } + + is_on_delete = FALSE; + n_on_updates++; + } else { + is_on_delete = TRUE; + n_on_deletes++; + } + + ptr = dict_accept(cs, ptr, "RESTRICT", &success); + + if (success) { + goto scan_on_conditions; + } + + ptr = dict_accept(cs, ptr, "CASCADE", &success); + + if (success) { + if (is_on_delete) { + foreign->type |= DICT_FOREIGN_ON_DELETE_CASCADE; + } else { + foreign->type |= DICT_FOREIGN_ON_UPDATE_CASCADE; + } + + goto scan_on_conditions; + } + + ptr = dict_accept(cs, ptr, "NO", &success); + + if (success) { + ptr = dict_accept(cs, ptr, "ACTION", &success); + + if (!success) { + dict_foreign_free(foreign); + dict_foreign_report_syntax_err( + name, start_of_latest_foreign, ptr); + + return(DB_CANNOT_ADD_CONSTRAINT); + } + + if (is_on_delete) { + foreign->type |= DICT_FOREIGN_ON_DELETE_NO_ACTION; + } else { + foreign->type |= DICT_FOREIGN_ON_UPDATE_NO_ACTION; + } + + goto scan_on_conditions; + } + + ptr = dict_accept(cs, ptr, "SET", &success); + + if (!success) { + dict_foreign_free(foreign); + dict_foreign_report_syntax_err(name, start_of_latest_foreign, + ptr); + return(DB_CANNOT_ADD_CONSTRAINT); + } + + ptr = dict_accept(cs, ptr, "NULL", &success); + + if (!success) { + dict_foreign_free(foreign); + dict_foreign_report_syntax_err(name, start_of_latest_foreign, + ptr); + return(DB_CANNOT_ADD_CONSTRAINT); + } + + for (j = 0; j < foreign->n_fields; j++) { + if ((dict_index_get_nth_col(foreign->foreign_index, j)->prtype) + & DATA_NOT_NULL) { + + /* It is not sensible to define SET NULL + if the column is not allowed to be NULL! */ + + dict_foreign_free(foreign); + + mutex_enter(&dict_foreign_err_mutex); + dict_foreign_error_report_low(ef, name); + fprintf(ef, "%s:\n" + "You have defined a SET NULL condition" + " though some of the\n" + "columns are defined as NOT NULL.\n", + start_of_latest_foreign); + mutex_exit(&dict_foreign_err_mutex); + + return(DB_CANNOT_ADD_CONSTRAINT); + } + } + + if (is_on_delete) { + foreign->type |= DICT_FOREIGN_ON_DELETE_SET_NULL; + } else { + foreign->type |= DICT_FOREIGN_ON_UPDATE_SET_NULL; + } + + goto scan_on_conditions; + +try_find_index: + if (n_on_deletes > 1 || n_on_updates > 1) { + /* It is an error to define more than 1 action */ + + dict_foreign_free(foreign); + + mutex_enter(&dict_foreign_err_mutex); + dict_foreign_error_report_low(ef, name); + fprintf(ef, "%s:\n" + "You have twice an ON DELETE clause" + " or twice an ON UPDATE clause.\n", + start_of_latest_foreign); + mutex_exit(&dict_foreign_err_mutex); + + return(DB_CANNOT_ADD_CONSTRAINT); + } + + /* Try to find an index which contains the columns as the first fields + and in the right order, and the types are the same as in + foreign->foreign_index */ + + if (referenced_table) { + index = dict_foreign_find_index(referenced_table, + column_names, i, + foreign->foreign_index, + TRUE, FALSE); + if (!index) { + dict_foreign_free(foreign); + mutex_enter(&dict_foreign_err_mutex); + dict_foreign_error_report_low(ef, name); + fprintf(ef, "%s:\n" + "Cannot find an index in the" + " referenced table where the\n" + "referenced columns appear as the" + " first columns, or column types\n" + "in the table and the referenced table" + " do not match for constraint.\n" + "Note that the internal storage type of" + " ENUM and SET changed in\n" + "tables created with >= InnoDB-4.1.12," + " and such columns in old tables\n" + "cannot be referenced by such columns" + " in new tables.\n" + "See http://dev.mysql.com/doc/refman/5.1/en/" + "innodb-foreign-key-constraints.html\n" + "for correct foreign key definition.\n", + start_of_latest_foreign); + mutex_exit(&dict_foreign_err_mutex); + + return(DB_CANNOT_ADD_CONSTRAINT); + } + } else { + ut_a(trx->check_foreigns == FALSE); + index = NULL; + } + + foreign->referenced_index = index; + foreign->referenced_table = referenced_table; + + foreign->referenced_table_name + = mem_heap_strdup(foreign->heap, referenced_table_name); + + foreign->referenced_col_names = mem_heap_alloc(foreign->heap, + i * sizeof(void*)); + for (i = 0; i < foreign->n_fields; i++) { + foreign->referenced_col_names[i] + = mem_heap_strdup(foreign->heap, column_names[i]); + } + + /* We found an ok constraint definition: add to the lists */ + + UT_LIST_ADD_LAST(foreign_list, table->foreign_list, foreign); + + if (referenced_table) { + UT_LIST_ADD_LAST(referenced_list, + referenced_table->referenced_list, + foreign); + } + + goto loop; +} + +/************************************************************************* +Scans a table create SQL string and adds to the data dictionary the foreign +key constraints declared in the string. This function should be called after +the indexes for a table have been created. Each foreign key constraint must +be accompanied with indexes in both participating tables. The indexes are +allowed to contain more fields than mentioned in the constraint. */ +UNIV_INTERN +ulint +dict_create_foreign_constraints( +/*============================*/ + /* out: error code or DB_SUCCESS */ + trx_t* trx, /* in: transaction */ + const char* sql_string, /* in: table create statement where + foreign keys are declared like: + FOREIGN KEY (a, b) REFERENCES + table2(c, d), table2 can be written + also with the database + name before it: test.table2; the + default database id the database of + parameter name */ + const char* name, /* in: table full name in the + normalized form + database_name/table_name */ + ibool reject_fks) /* in: if TRUE, fail with error + code DB_CANNOT_ADD_CONSTRAINT if + any foreign keys are found. */ +{ + char* str; + ulint err; + mem_heap_t* heap; + + ut_a(trx); + ut_a(trx->mysql_thd); + + str = dict_strip_comments(sql_string); + heap = mem_heap_create(10000); + + err = dict_create_foreign_constraints_low( + trx, heap, innobase_get_charset(trx->mysql_thd), str, name, + reject_fks); + + mem_heap_free(heap); + mem_free(str); + + return(err); +} + +/************************************************************************** +Parses the CONSTRAINT id's to be dropped in an ALTER TABLE statement. */ +UNIV_INTERN +ulint +dict_foreign_parse_drop_constraints( +/*================================*/ + /* out: DB_SUCCESS or + DB_CANNOT_DROP_CONSTRAINT if + syntax error or the constraint + id does not match */ + mem_heap_t* heap, /* in: heap from which we can + allocate memory */ + trx_t* trx, /* in: transaction */ + dict_table_t* table, /* in: table */ + ulint* n, /* out: number of constraints + to drop */ + const char*** constraints_to_drop) /* out: id's of the + constraints to drop */ +{ + dict_foreign_t* foreign; + ibool success; + char* str; + const char* ptr; + const char* id; + FILE* ef = dict_foreign_err_file; + struct charset_info_st* cs; + + ut_a(trx); + ut_a(trx->mysql_thd); + + cs = innobase_get_charset(trx->mysql_thd); + + *n = 0; + + *constraints_to_drop = mem_heap_alloc(heap, 1000 * sizeof(char*)); + + str = dict_strip_comments(*(trx->mysql_query_str)); + ptr = str; + + ut_ad(mutex_own(&(dict_sys->mutex))); +loop: + ptr = dict_scan_to(ptr, "DROP"); + + if (*ptr == '\0') { + mem_free(str); + + return(DB_SUCCESS); + } + + ptr = dict_accept(cs, ptr, "DROP", &success); + + if (!my_isspace(cs, *ptr)) { + + goto loop; + } + + ptr = dict_accept(cs, ptr, "FOREIGN", &success); + + if (!success || !my_isspace(cs, *ptr)) { + + goto loop; + } + + ptr = dict_accept(cs, ptr, "KEY", &success); + + if (!success) { + + goto syntax_error; + } + + ptr = dict_scan_id(cs, ptr, heap, &id, FALSE, TRUE); + + if (id == NULL) { + + goto syntax_error; + } + + ut_a(*n < 1000); + (*constraints_to_drop)[*n] = id; + (*n)++; + + /* Look for the given constraint id */ + + foreign = UT_LIST_GET_FIRST(table->foreign_list); + + while (foreign != NULL) { + if (0 == strcmp(foreign->id, id) + || (strchr(foreign->id, '/') + && 0 == strcmp(id, + dict_remove_db_name(foreign->id)))) { + /* Found */ + break; + } + + foreign = UT_LIST_GET_NEXT(foreign_list, foreign); + } + + if (foreign == NULL) { + mutex_enter(&dict_foreign_err_mutex); + rewind(ef); + ut_print_timestamp(ef); + fputs(" Error in dropping of a foreign key constraint" + " of table ", ef); + ut_print_name(ef, NULL, TRUE, table->name); + fputs(",\n" + "in SQL command\n", ef); + fputs(str, ef); + fputs("\nCannot find a constraint with the given id ", ef); + ut_print_name(ef, NULL, FALSE, id); + fputs(".\n", ef); + mutex_exit(&dict_foreign_err_mutex); + + mem_free(str); + + return(DB_CANNOT_DROP_CONSTRAINT); + } + + goto loop; + +syntax_error: + mutex_enter(&dict_foreign_err_mutex); + rewind(ef); + ut_print_timestamp(ef); + fputs(" Syntax error in dropping of a" + " foreign key constraint of table ", ef); + ut_print_name(ef, NULL, TRUE, table->name); + fprintf(ef, ",\n" + "close to:\n%s\n in SQL command\n%s\n", ptr, str); + mutex_exit(&dict_foreign_err_mutex); + + mem_free(str); + + return(DB_CANNOT_DROP_CONSTRAINT); +} +#endif /* UNIV_HOTBACKUP */ + +/*==================== END OF FOREIGN KEY PROCESSING ====================*/ + +/************************************************************************** +Returns an index object if it is found in the dictionary cache. +Assumes that dict_sys->mutex is already being held. */ +UNIV_INTERN +dict_index_t* +dict_index_get_if_in_cache_low( +/*===========================*/ + /* out: index, NULL if not found */ + dulint index_id) /* in: index id */ +{ + ut_ad(mutex_own(&(dict_sys->mutex))); + + return(dict_index_find_on_id_low(index_id)); +} + +#if defined UNIV_DEBUG || defined UNIV_BUF_DEBUG +/************************************************************************** +Returns an index object if it is found in the dictionary cache. */ +UNIV_INTERN +dict_index_t* +dict_index_get_if_in_cache( +/*=======================*/ + /* out: index, NULL if not found */ + dulint index_id) /* in: index id */ +{ + dict_index_t* index; + + if (dict_sys == NULL) { + return(NULL); + } + + mutex_enter(&(dict_sys->mutex)); + + index = dict_index_get_if_in_cache_low(index_id); + + mutex_exit(&(dict_sys->mutex)); + + return(index); +} +#endif /* UNIV_DEBUG || UNIV_BUF_DEBUG */ + +#ifdef UNIV_DEBUG +/************************************************************************** +Checks that a tuple has n_fields_cmp value in a sensible range, so that +no comparison can occur with the page number field in a node pointer. */ +UNIV_INTERN +ibool +dict_index_check_search_tuple( +/*==========================*/ + /* out: TRUE if ok */ + const dict_index_t* index, /* in: index tree */ + const dtuple_t* tuple) /* in: tuple used in a search */ +{ + ut_a(index); + ut_a(dtuple_get_n_fields_cmp(tuple) + <= dict_index_get_n_unique_in_tree(index)); + return(TRUE); +} +#endif /* UNIV_DEBUG */ + +/************************************************************************** +Builds a node pointer out of a physical record and a page number. */ +UNIV_INTERN +dtuple_t* +dict_index_build_node_ptr( +/*======================*/ + /* out, own: node pointer */ + const dict_index_t* index, /* in: index */ + const rec_t* rec, /* in: record for which to build node + pointer */ + ulint page_no,/* in: page number to put in node + pointer */ + mem_heap_t* heap, /* in: memory heap where pointer + created */ + ulint level) /* in: level of rec in tree: + 0 means leaf level */ +{ + dtuple_t* tuple; + dfield_t* field; + byte* buf; + ulint n_unique; + + if (UNIV_UNLIKELY(index->type & DICT_UNIVERSAL)) { + /* In a universal index tree, we take the whole record as + the node pointer if the record is on the leaf level, + on non-leaf levels we remove the last field, which + contains the page number of the child page */ + + ut_a(!dict_table_is_comp(index->table)); + n_unique = rec_get_n_fields_old(rec); + + if (level > 0) { + ut_a(n_unique > 1); + n_unique--; + } + } else { + n_unique = dict_index_get_n_unique_in_tree(index); + } + + tuple = dtuple_create(heap, n_unique + 1); + + /* When searching in the tree for the node pointer, we must not do + comparison on the last field, the page number field, as on upper + levels in the tree there may be identical node pointers with a + different page number; therefore, we set the n_fields_cmp to one + less: */ + + dtuple_set_n_fields_cmp(tuple, n_unique); + + dict_index_copy_types(tuple, index, n_unique); + + buf = mem_heap_alloc(heap, 4); + + mach_write_to_4(buf, page_no); + + field = dtuple_get_nth_field(tuple, n_unique); + dfield_set_data(field, buf, 4); + + dtype_set(dfield_get_type(field), DATA_SYS_CHILD, DATA_NOT_NULL, 4); + + rec_copy_prefix_to_dtuple(tuple, rec, index, n_unique, heap); + dtuple_set_info_bits(tuple, dtuple_get_info_bits(tuple) + | REC_STATUS_NODE_PTR); + + ut_ad(dtuple_check_typed(tuple)); + + return(tuple); +} + +/************************************************************************** +Copies an initial segment of a physical record, long enough to specify an +index entry uniquely. */ +UNIV_INTERN +rec_t* +dict_index_copy_rec_order_prefix( +/*=============================*/ + /* out: pointer to the prefix record */ + const dict_index_t* index, /* in: index */ + const rec_t* rec, /* in: record for which to + copy prefix */ + ulint* n_fields,/* out: number of fields copied */ + byte** buf, /* in/out: memory buffer for the + copied prefix, or NULL */ + ulint* buf_size)/* in/out: buffer size */ +{ + ulint n; + + UNIV_PREFETCH_R(rec); + + if (UNIV_UNLIKELY(index->type & DICT_UNIVERSAL)) { + ut_a(!dict_table_is_comp(index->table)); + n = rec_get_n_fields_old(rec); + } else { + n = dict_index_get_n_unique_in_tree(index); + } + + *n_fields = n; + return(rec_copy_prefix_to_buf(rec, index, n, buf, buf_size)); +} + +/************************************************************************** +Builds a typed data tuple out of a physical record. */ +UNIV_INTERN +dtuple_t* +dict_index_build_data_tuple( +/*========================*/ + /* out, own: data tuple */ + dict_index_t* index, /* in: index tree */ + rec_t* rec, /* in: record for which to build data tuple */ + ulint n_fields,/* in: number of data fields */ + mem_heap_t* heap) /* in: memory heap where tuple created */ +{ + dtuple_t* tuple; + + ut_ad(dict_table_is_comp(index->table) + || n_fields <= rec_get_n_fields_old(rec)); + + tuple = dtuple_create(heap, n_fields); + + dict_index_copy_types(tuple, index, n_fields); + + rec_copy_prefix_to_dtuple(tuple, rec, index, n_fields, heap); + + ut_ad(dtuple_check_typed(tuple)); + + return(tuple); +} + +/************************************************************************* +Calculates the minimum record length in an index. */ +UNIV_INTERN +ulint +dict_index_calc_min_rec_len( +/*========================*/ + const dict_index_t* index) /* in: index */ +{ + ulint sum = 0; + ulint i; + + if (dict_table_is_comp(index->table)) { + ulint nullable = 0; + sum = REC_N_NEW_EXTRA_BYTES; + for (i = 0; i < dict_index_get_n_fields(index); i++) { + const dict_col_t* col + = dict_index_get_nth_col(index, i); + ulint size = dict_col_get_fixed_size(col); + sum += size; + if (!size) { + size = col->len; + sum += size < 128 ? 1 : 2; + } + if (!(col->prtype & DATA_NOT_NULL)) { + nullable++; + } + } + + /* round the NULL flags up to full bytes */ + sum += UT_BITS_IN_BYTES(nullable); + + return(sum); + } + + for (i = 0; i < dict_index_get_n_fields(index); i++) { + sum += dict_col_get_fixed_size( + dict_index_get_nth_col(index, i)); + } + + if (sum > 127) { + sum += 2 * dict_index_get_n_fields(index); + } else { + sum += dict_index_get_n_fields(index); + } + + sum += REC_N_OLD_EXTRA_BYTES; + + return(sum); +} + +/************************************************************************* +Calculates new estimates for table and index statistics. The statistics +are used in query optimization. */ +UNIV_INTERN +void +dict_update_statistics_low( +/*=======================*/ + dict_table_t* table, /* in/out: table */ + ibool has_dict_mutex __attribute__((unused))) + /* in: TRUE if the caller has the + dictionary mutex */ +{ + dict_index_t* index; + ulint size; + ulint sum_of_index_sizes = 0; + + if (table->ibd_file_missing) { + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: cannot calculate statistics for table %s\n" + "InnoDB: because the .ibd file is missing. For help," + " please refer to\n" + "InnoDB: http://dev.mysql.com/doc/refman/5.1/en/" + "innodb-troubleshooting.html\n", + table->name); + + return; + } + + /* If we have set a high innodb_force_recovery level, do not calculate + statistics, as a badly corrupted index can cause a crash in it. */ + + if (srv_force_recovery >= SRV_FORCE_NO_IBUF_MERGE) { + + return; + } + + /* Find out the sizes of the indexes and how many different values + for the key they approximately have */ + + index = dict_table_get_first_index(table); + + if (index == NULL) { + /* Table definition is corrupt */ + + return; + } + + while (index) { + size = btr_get_size(index, BTR_TOTAL_SIZE); + + index->stat_index_size = size; + + sum_of_index_sizes += size; + + size = btr_get_size(index, BTR_N_LEAF_PAGES); + + if (size == 0) { + /* The root node of the tree is a leaf */ + size = 1; + } + + index->stat_n_leaf_pages = size; + + btr_estimate_number_of_different_key_vals(index); + + index = dict_table_get_next_index(index); + } + + index = dict_table_get_first_index(table); + + table->stat_n_rows = index->stat_n_diff_key_vals[ + dict_index_get_n_unique(index)]; + + table->stat_clustered_index_size = index->stat_index_size; + + table->stat_sum_of_other_index_sizes = sum_of_index_sizes + - index->stat_index_size; + + table->stat_initialized = TRUE; + + table->stat_modified_counter = 0; +} + +/************************************************************************* +Calculates new estimates for table and index statistics. The statistics +are used in query optimization. */ +UNIV_INTERN +void +dict_update_statistics( +/*===================*/ + dict_table_t* table) /* in/out: table */ +{ + dict_update_statistics_low(table, FALSE); +} + +/************************************************************************** +Prints info of a foreign key constraint. */ +static +void +dict_foreign_print_low( +/*===================*/ + dict_foreign_t* foreign) /* in: foreign key constraint */ +{ + ulint i; + + ut_ad(mutex_own(&(dict_sys->mutex))); + + fprintf(stderr, " FOREIGN KEY CONSTRAINT %s: %s (", + foreign->id, foreign->foreign_table_name); + + for (i = 0; i < foreign->n_fields; i++) { + fprintf(stderr, " %s", foreign->foreign_col_names[i]); + } + + fprintf(stderr, " )\n" + " REFERENCES %s (", + foreign->referenced_table_name); + + for (i = 0; i < foreign->n_fields; i++) { + fprintf(stderr, " %s", foreign->referenced_col_names[i]); + } + + fputs(" )\n", stderr); +} + +/************************************************************************** +Prints a table data. */ +UNIV_INTERN +void +dict_table_print( +/*=============*/ + dict_table_t* table) /* in: table */ +{ + mutex_enter(&(dict_sys->mutex)); + dict_table_print_low(table); + mutex_exit(&(dict_sys->mutex)); +} + +/************************************************************************** +Prints a table data when we know the table name. */ +UNIV_INTERN +void +dict_table_print_by_name( +/*=====================*/ + const char* name) +{ + dict_table_t* table; + + mutex_enter(&(dict_sys->mutex)); + + table = dict_table_get_low(name); + + ut_a(table); + + dict_table_print_low(table); + mutex_exit(&(dict_sys->mutex)); +} + +/************************************************************************** +Prints a table data. */ +UNIV_INTERN +void +dict_table_print_low( +/*=================*/ + dict_table_t* table) /* in: table */ +{ + dict_index_t* index; + dict_foreign_t* foreign; + ulint i; + + ut_ad(mutex_own(&(dict_sys->mutex))); + + dict_update_statistics_low(table, TRUE); + + fprintf(stderr, + "--------------------------------------\n" + "TABLE: name %s, id %lu %lu, flags %lx, columns %lu," + " indexes %lu, appr.rows %lu\n" + " COLUMNS: ", + table->name, + (ulong) ut_dulint_get_high(table->id), + (ulong) ut_dulint_get_low(table->id), + (ulong) table->flags, + (ulong) table->n_cols, + (ulong) UT_LIST_GET_LEN(table->indexes), + (ulong) table->stat_n_rows); + + for (i = 0; i + 1 < (ulint) table->n_cols; i++) { + dict_col_print_low(table, dict_table_get_nth_col(table, i)); + fputs("; ", stderr); + } + + putc('\n', stderr); + + index = UT_LIST_GET_FIRST(table->indexes); + + while (index != NULL) { + dict_index_print_low(index); + index = UT_LIST_GET_NEXT(indexes, index); + } + + foreign = UT_LIST_GET_FIRST(table->foreign_list); + + while (foreign != NULL) { + dict_foreign_print_low(foreign); + foreign = UT_LIST_GET_NEXT(foreign_list, foreign); + } + + foreign = UT_LIST_GET_FIRST(table->referenced_list); + + while (foreign != NULL) { + dict_foreign_print_low(foreign); + foreign = UT_LIST_GET_NEXT(referenced_list, foreign); + } +} + +/************************************************************************** +Prints a column data. */ +static +void +dict_col_print_low( +/*===============*/ + const dict_table_t* table, /* in: table */ + const dict_col_t* col) /* in: column */ +{ + dtype_t type; + + ut_ad(mutex_own(&(dict_sys->mutex))); + + dict_col_copy_type(col, &type); + fprintf(stderr, "%s: ", dict_table_get_col_name(table, + dict_col_get_no(col))); + + dtype_print(&type); +} + +/************************************************************************** +Prints an index data. */ +static +void +dict_index_print_low( +/*=================*/ + dict_index_t* index) /* in: index */ +{ + ib_int64_t n_vals; + ulint i; + const char* type_string; + + ut_ad(mutex_own(&(dict_sys->mutex))); + + if (index->n_user_defined_cols > 0) { + n_vals = index->stat_n_diff_key_vals[ + index->n_user_defined_cols]; + } else { + n_vals = index->stat_n_diff_key_vals[1]; + } + + if (dict_index_is_clust(index)) { + type_string = "clustered index"; + } else if (dict_index_is_unique(index)) { + type_string = "unique index"; + } else { + type_string = "secondary index"; + } + + fprintf(stderr, + " INDEX: name %s, id %lu %lu, fields %lu/%lu," + " uniq %lu, type %lu\n" + " root page %lu, appr.key vals %lu," + " leaf pages %lu, size pages %lu\n" + " FIELDS: ", + index->name, + (ulong) ut_dulint_get_high(index->id), + (ulong) ut_dulint_get_low(index->id), + (ulong) index->n_user_defined_cols, + (ulong) index->n_fields, + (ulong) index->n_uniq, + (ulong) index->type, + (ulong) index->page, + (ulong) n_vals, + (ulong) index->stat_n_leaf_pages, + (ulong) index->stat_index_size); + + for (i = 0; i < index->n_fields; i++) { + dict_field_print_low(dict_index_get_nth_field(index, i)); + } + + putc('\n', stderr); + +#ifdef UNIV_BTR_PRINT + btr_print_size(index); + + btr_print_index(index, 7); +#endif /* UNIV_BTR_PRINT */ +} + +/************************************************************************** +Prints a field data. */ +static +void +dict_field_print_low( +/*=================*/ + dict_field_t* field) /* in: field */ +{ + ut_ad(mutex_own(&(dict_sys->mutex))); + + fprintf(stderr, " %s", field->name); + + if (field->prefix_len != 0) { + fprintf(stderr, "(%lu)", (ulong) field->prefix_len); + } +} + +/************************************************************************** +Outputs info on a foreign key of a table in a format suitable for +CREATE TABLE. */ +UNIV_INTERN +void +dict_print_info_on_foreign_key_in_create_format( +/*============================================*/ + FILE* file, /* in: file where to print */ + trx_t* trx, /* in: transaction */ + dict_foreign_t* foreign, /* in: foreign key constraint */ + ibool add_newline) /* in: whether to add a newline */ +{ + const char* stripped_id; + ulint i; + + if (strchr(foreign->id, '/')) { + /* Strip the preceding database name from the constraint id */ + stripped_id = foreign->id + 1 + + dict_get_db_name_len(foreign->id); + } else { + stripped_id = foreign->id; + } + + putc(',', file); + + if (add_newline) { + /* SHOW CREATE TABLE wants constraints each printed nicely + on its own line, while error messages want no newlines + inserted. */ + fputs("\n ", file); + } + + fputs(" CONSTRAINT ", file); + ut_print_name(file, trx, FALSE, stripped_id); + fputs(" FOREIGN KEY (", file); + + for (i = 0;;) { + ut_print_name(file, trx, FALSE, foreign->foreign_col_names[i]); + if (++i < foreign->n_fields) { + fputs(", ", file); + } else { + break; + } + } + + fputs(") REFERENCES ", file); + + if (dict_tables_have_same_db(foreign->foreign_table_name, + foreign->referenced_table_name)) { + /* Do not print the database name of the referenced table */ + ut_print_name(file, trx, TRUE, + dict_remove_db_name( + foreign->referenced_table_name)); + } else { + ut_print_name(file, trx, TRUE, + foreign->referenced_table_name); + } + + putc(' ', file); + putc('(', file); + + for (i = 0;;) { + ut_print_name(file, trx, FALSE, + foreign->referenced_col_names[i]); + if (++i < foreign->n_fields) { + fputs(", ", file); + } else { + break; + } + } + + putc(')', file); + + if (foreign->type & DICT_FOREIGN_ON_DELETE_CASCADE) { + fputs(" ON DELETE CASCADE", file); + } + + if (foreign->type & DICT_FOREIGN_ON_DELETE_SET_NULL) { + fputs(" ON DELETE SET NULL", file); + } + + if (foreign->type & DICT_FOREIGN_ON_DELETE_NO_ACTION) { + fputs(" ON DELETE NO ACTION", file); + } + + if (foreign->type & DICT_FOREIGN_ON_UPDATE_CASCADE) { + fputs(" ON UPDATE CASCADE", file); + } + + if (foreign->type & DICT_FOREIGN_ON_UPDATE_SET_NULL) { + fputs(" ON UPDATE SET NULL", file); + } + + if (foreign->type & DICT_FOREIGN_ON_UPDATE_NO_ACTION) { + fputs(" ON UPDATE NO ACTION", file); + } +} + +/************************************************************************** +Outputs info on foreign keys of a table. */ +UNIV_INTERN +void +dict_print_info_on_foreign_keys( +/*============================*/ + ibool create_table_format, /* in: if TRUE then print in + a format suitable to be inserted into + a CREATE TABLE, otherwise in the format + of SHOW TABLE STATUS */ + FILE* file, /* in: file where to print */ + trx_t* trx, /* in: transaction */ + dict_table_t* table) /* in: table */ +{ + dict_foreign_t* foreign; + + mutex_enter(&(dict_sys->mutex)); + + foreign = UT_LIST_GET_FIRST(table->foreign_list); + + if (foreign == NULL) { + mutex_exit(&(dict_sys->mutex)); + + return; + } + + while (foreign != NULL) { + if (create_table_format) { + dict_print_info_on_foreign_key_in_create_format( + file, trx, foreign, TRUE); + } else { + ulint i; + fputs("; (", file); + + for (i = 0; i < foreign->n_fields; i++) { + if (i) { + putc(' ', file); + } + + ut_print_name(file, trx, FALSE, + foreign->foreign_col_names[i]); + } + + fputs(") REFER ", file); + ut_print_name(file, trx, TRUE, + foreign->referenced_table_name); + putc('(', file); + + for (i = 0; i < foreign->n_fields; i++) { + if (i) { + putc(' ', file); + } + ut_print_name( + file, trx, FALSE, + foreign->referenced_col_names[i]); + } + + putc(')', file); + + if (foreign->type == DICT_FOREIGN_ON_DELETE_CASCADE) { + fputs(" ON DELETE CASCADE", file); + } + + if (foreign->type == DICT_FOREIGN_ON_DELETE_SET_NULL) { + fputs(" ON DELETE SET NULL", file); + } + + if (foreign->type & DICT_FOREIGN_ON_DELETE_NO_ACTION) { + fputs(" ON DELETE NO ACTION", file); + } + + if (foreign->type & DICT_FOREIGN_ON_UPDATE_CASCADE) { + fputs(" ON UPDATE CASCADE", file); + } + + if (foreign->type & DICT_FOREIGN_ON_UPDATE_SET_NULL) { + fputs(" ON UPDATE SET NULL", file); + } + + if (foreign->type & DICT_FOREIGN_ON_UPDATE_NO_ACTION) { + fputs(" ON UPDATE NO ACTION", file); + } + } + + foreign = UT_LIST_GET_NEXT(foreign_list, foreign); + } + + mutex_exit(&(dict_sys->mutex)); +} + +/************************************************************************ +Displays the names of the index and the table. */ +UNIV_INTERN +void +dict_index_name_print( +/*==================*/ + FILE* file, /* in: output stream */ + trx_t* trx, /* in: transaction */ + const dict_index_t* index) /* in: index to print */ +{ + fputs("index ", file); + ut_print_name(file, trx, FALSE, index->name); + fputs(" of table ", file); + ut_print_name(file, trx, TRUE, index->table_name); +} + +/************************************************************************** +Get index by name */ +UNIV_INTERN +dict_index_t* +dict_table_get_index_on_name( +/*=========================*/ + /* out: index, NULL if does not exist */ + dict_table_t* table, /* in: table */ + const char* name) /* in: name of the index to find */ +{ + dict_index_t* index; + + index = dict_table_get_first_index(table); + + while (index != NULL) { + if (ut_strcmp(index->name, name) == 0) { + + return(index); + } + + index = dict_table_get_next_index(index); + } + + return(NULL); + +} + +/************************************************************************** +Replace the index passed in with another equivalent index in the tables +foreign key list. */ +UNIV_INTERN +void +dict_table_replace_index_in_foreign_list( +/*=====================================*/ + dict_table_t* table, /* in/out: table */ + dict_index_t* index) /* in: index to be replaced */ +{ + dict_foreign_t* foreign; + + for (foreign = UT_LIST_GET_FIRST(table->foreign_list); + foreign; + foreign = UT_LIST_GET_NEXT(foreign_list, foreign)) { + + if (foreign->foreign_index == index) { + dict_index_t* new_index + = dict_foreign_find_equiv_index(foreign); + ut_a(new_index); + + foreign->foreign_index = new_index; + } + } +} + +/************************************************************************** +In case there is more than one index with the same name return the index +with the min(id). */ +UNIV_INTERN +dict_index_t* +dict_table_get_index_on_name_and_min_id( +/*=====================================*/ + /* out: index, NULL if does not exist */ + dict_table_t* table, /* in: table */ + const char* name) /* in: name of the index to find */ +{ + dict_index_t* index; + dict_index_t* min_index; /* Index with matching name and min(id) */ + + min_index = NULL; + index = dict_table_get_first_index(table); + + while (index != NULL) { + if (ut_strcmp(index->name, name) == 0) { + if (!min_index + || ut_dulint_cmp(index->id, min_index->id) < 0) { + + min_index = index; + } + } + + index = dict_table_get_next_index(index); + } + + return(min_index); + +} + +#ifdef UNIV_DEBUG +/************************************************************************** +Check for duplicate index entries in a table [using the index name] */ +UNIV_INTERN +void +dict_table_check_for_dup_indexes( +/*=============================*/ + const dict_table_t* table) /* in: Check for dup indexes + in this table */ +{ + /* Check for duplicates, ignoring indexes that are marked + as to be dropped */ + + const dict_index_t* index1; + const dict_index_t* index2; + + /* The primary index _must_ exist */ + ut_a(UT_LIST_GET_LEN(table->indexes) > 0); + + index1 = UT_LIST_GET_FIRST(table->indexes); + index2 = UT_LIST_GET_NEXT(indexes, index1); + + while (index1 && index2) { + + while (index2) { + + if (!index2->to_be_dropped) { + ut_ad(ut_strcmp(index1->name, index2->name)); + } + + index2 = UT_LIST_GET_NEXT(indexes, index2); + } + + index1 = UT_LIST_GET_NEXT(indexes, index1); + index2 = UT_LIST_GET_NEXT(indexes, index1); + } +} +#endif /* UNIV_DEBUG */ === added file 'storage/xtradb/dict/dict0load.c' --- a/storage/xtradb/dict/dict0load.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/dict/dict0load.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,1460 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Loads to the memory cache database object definitions +from dictionary tables + +Created 4/24/1996 Heikki Tuuri +*******************************************************/ + +#include "dict0load.h" +#ifndef UNIV_HOTBACKUP +#include "mysql_version.h" +#endif /* !UNIV_HOTBACKUP */ + +#ifdef UNIV_NONINL +#include "dict0load.ic" +#endif + +#include "btr0pcur.h" +#include "btr0btr.h" +#include "page0page.h" +#include "mach0data.h" +#include "dict0dict.h" +#include "dict0boot.h" +#include "rem0cmp.h" +#include "srv0start.h" +#include "srv0srv.h" + +/******************************************************************** +Returns TRUE if index's i'th column's name is 'name' .*/ +static +ibool +name_of_col_is( +/*===========*/ + /* out: */ + dict_table_t* table, /* in: table */ + dict_index_t* index, /* in: index */ + ulint i, /* in: */ + const char* name) /* in: name to compare to */ +{ + ulint tmp = dict_col_get_no(dict_field_get_col( + dict_index_get_nth_field( + index, i))); + + return(strcmp(name, dict_table_get_col_name(table, tmp)) == 0); +} + +/************************************************************************ +Finds the first table name in the given database. */ +UNIV_INTERN +char* +dict_get_first_table_name_in_db( +/*============================*/ + /* out, own: table name, NULL if + does not exist; the caller must + free the memory in the string! */ + const char* name) /* in: database name which ends in '/' */ +{ + dict_table_t* sys_tables; + btr_pcur_t pcur; + dict_index_t* sys_index; + dtuple_t* tuple; + mem_heap_t* heap; + dfield_t* dfield; + const rec_t* rec; + const byte* field; + ulint len; + mtr_t mtr; + + ut_ad(mutex_own(&(dict_sys->mutex))); + + heap = mem_heap_create(1000); + + mtr_start(&mtr); + + sys_tables = dict_table_get_low("SYS_TABLES"); + sys_index = UT_LIST_GET_FIRST(sys_tables->indexes); + ut_a(!dict_table_is_comp(sys_tables)); + + tuple = dtuple_create(heap, 1); + dfield = dtuple_get_nth_field(tuple, 0); + + dfield_set_data(dfield, name, ut_strlen(name)); + dict_index_copy_types(tuple, sys_index, 1); + + btr_pcur_open_on_user_rec(sys_index, tuple, PAGE_CUR_GE, + BTR_SEARCH_LEAF, &pcur, &mtr); +loop: + rec = btr_pcur_get_rec(&pcur); + + if (!btr_pcur_is_on_user_rec(&pcur)) { + /* Not found */ + + btr_pcur_close(&pcur); + mtr_commit(&mtr); + mem_heap_free(heap); + + return(NULL); + } + + field = rec_get_nth_field_old(rec, 0, &len); + + if (len < strlen(name) + || ut_memcmp(name, field, strlen(name)) != 0) { + /* Not found */ + + btr_pcur_close(&pcur); + mtr_commit(&mtr); + mem_heap_free(heap); + + return(NULL); + } + + if (!rec_get_deleted_flag(rec, 0)) { + + /* We found one */ + + char* table_name = mem_strdupl((char*) field, len); + + btr_pcur_close(&pcur); + mtr_commit(&mtr); + mem_heap_free(heap); + + return(table_name); + } + + btr_pcur_move_to_next_user_rec(&pcur, &mtr); + + goto loop; +} + +/************************************************************************ +Prints to the standard output information on all tables found in the data +dictionary system table. */ +UNIV_INTERN +void +dict_print(void) +/*============*/ +{ + dict_table_t* sys_tables; + dict_index_t* sys_index; + dict_table_t* table; + btr_pcur_t pcur; + const rec_t* rec; + const byte* field; + ulint len; + mtr_t mtr; + + /* Enlarge the fatal semaphore wait timeout during the InnoDB table + monitor printout */ + + mutex_enter(&kernel_mutex); + srv_fatal_semaphore_wait_threshold += 7200; /* 2 hours */ + mutex_exit(&kernel_mutex); + + mutex_enter(&(dict_sys->mutex)); + + mtr_start(&mtr); + + sys_tables = dict_table_get_low("SYS_TABLES"); + sys_index = UT_LIST_GET_FIRST(sys_tables->indexes); + + btr_pcur_open_at_index_side(TRUE, sys_index, BTR_SEARCH_LEAF, &pcur, + TRUE, &mtr); +loop: + btr_pcur_move_to_next_user_rec(&pcur, &mtr); + + rec = btr_pcur_get_rec(&pcur); + + if (!btr_pcur_is_on_user_rec(&pcur)) { + /* end of index */ + + btr_pcur_close(&pcur); + mtr_commit(&mtr); + + mutex_exit(&(dict_sys->mutex)); + + /* Restore the fatal semaphore wait timeout */ + + mutex_enter(&kernel_mutex); + srv_fatal_semaphore_wait_threshold -= 7200; /* 2 hours */ + mutex_exit(&kernel_mutex); + + return; + } + + field = rec_get_nth_field_old(rec, 0, &len); + + if (!rec_get_deleted_flag(rec, 0)) { + + /* We found one */ + + char* table_name = mem_strdupl((char*) field, len); + + btr_pcur_store_position(&pcur, &mtr); + + mtr_commit(&mtr); + + table = dict_table_get_low(table_name); + mem_free(table_name); + + if (table == NULL) { + fputs("InnoDB: Failed to load table ", stderr); + ut_print_namel(stderr, NULL, TRUE, (char*) field, len); + putc('\n', stderr); + } else { + /* The table definition was corrupt if there + is no index */ + + if (dict_table_get_first_index(table)) { + dict_update_statistics_low(table, TRUE); + } + + dict_table_print_low(table); + } + + mtr_start(&mtr); + + btr_pcur_restore_position(BTR_SEARCH_LEAF, &pcur, &mtr); + } + + goto loop; +} + +/************************************************************************ +Determine the flags of a table described in SYS_TABLES. */ +static +ulint +dict_sys_tables_get_flags( +/*======================*/ + /* out: compressed page size in kilobytes; + or 0 if the tablespace is uncompressed, + ULINT_UNDEFINED on error */ + const rec_t* rec) /* in: a record of SYS_TABLES */ +{ + const byte* field; + ulint len; + ulint n_cols; + ulint flags; + + field = rec_get_nth_field_old(rec, 5, &len); + ut_a(len == 4); + + flags = mach_read_from_4(field); + + if (UNIV_LIKELY(flags == DICT_TABLE_ORDINARY)) { + return(0); + } + + field = rec_get_nth_field_old(rec, 4, &len); + n_cols = mach_read_from_4(field); + + if (UNIV_UNLIKELY(!(n_cols & 0x80000000UL))) { + /* New file formats require ROW_FORMAT=COMPACT. */ + return(ULINT_UNDEFINED); + } + + switch (flags & (DICT_TF_FORMAT_MASK | DICT_TF_COMPACT)) { + default: + case DICT_TF_FORMAT_51 << DICT_TF_FORMAT_SHIFT: + case DICT_TF_FORMAT_51 << DICT_TF_FORMAT_SHIFT | DICT_TF_COMPACT: + /* flags should be DICT_TABLE_ORDINARY, + or DICT_TF_FORMAT_MASK should be nonzero. */ + return(ULINT_UNDEFINED); + + case DICT_TF_FORMAT_ZIP << DICT_TF_FORMAT_SHIFT | DICT_TF_COMPACT: +#if DICT_TF_FORMAT_MAX > DICT_TF_FORMAT_ZIP +# error "missing case labels for DICT_TF_FORMAT_ZIP .. DICT_TF_FORMAT_MAX" +#endif + /* We support this format. */ + break; + } + + if (UNIV_UNLIKELY((flags & DICT_TF_ZSSIZE_MASK) + > (DICT_TF_ZSSIZE_MAX << DICT_TF_ZSSIZE_SHIFT))) { + /* Unsupported compressed page size. */ + return(ULINT_UNDEFINED); + } + + if (UNIV_UNLIKELY(flags & (~0 << DICT_TF_BITS))) { + /* Some unused bits are set. */ + return(ULINT_UNDEFINED); + } + + return(flags); +} + +/************************************************************************ +In a crash recovery we already have all the tablespace objects created. +This function compares the space id information in the InnoDB data dictionary +to what we already read with fil_load_single_table_tablespaces(). + +In a normal startup, we create the tablespace objects for every table in +InnoDB's data dictionary, if the corresponding .ibd file exists. +We also scan the biggest space id, and store it to fil_system. */ +UNIV_INTERN +void +dict_check_tablespaces_and_store_max_id( +/*====================================*/ + ibool in_crash_recovery) /* in: are we doing a crash recovery */ +{ + dict_table_t* sys_tables; + dict_index_t* sys_index; + btr_pcur_t pcur; + const rec_t* rec; + ulint max_space_id = 0; + mtr_t mtr; + + mutex_enter(&(dict_sys->mutex)); + + mtr_start(&mtr); + + sys_tables = dict_table_get_low("SYS_TABLES"); + sys_index = UT_LIST_GET_FIRST(sys_tables->indexes); + ut_a(!dict_table_is_comp(sys_tables)); + + btr_pcur_open_at_index_side(TRUE, sys_index, BTR_SEARCH_LEAF, &pcur, + TRUE, &mtr); +loop: + btr_pcur_move_to_next_user_rec(&pcur, &mtr); + + rec = btr_pcur_get_rec(&pcur); + + if (!btr_pcur_is_on_user_rec(&pcur)) { + /* end of index */ + + btr_pcur_close(&pcur); + mtr_commit(&mtr); + + /* We must make the tablespace cache aware of the biggest + known space id */ + + /* printf("Biggest space id in data dictionary %lu\n", + max_space_id); */ + fil_set_max_space_id_if_bigger(max_space_id); + + mutex_exit(&(dict_sys->mutex)); + + return; + } + + if (!rec_get_deleted_flag(rec, 0)) { + + /* We found one */ + const byte* field; + ulint len; + ulint space_id; + ulint flags; + char* name; + + field = rec_get_nth_field_old(rec, 0, &len); + name = mem_strdupl((char*) field, len); + + flags = dict_sys_tables_get_flags(rec); + if (UNIV_UNLIKELY(flags == ULINT_UNDEFINED)) { + + field = rec_get_nth_field_old(rec, 5, &len); + flags = mach_read_from_4(field); + + ut_print_timestamp(stderr); + fputs(" InnoDB: Error: table ", stderr); + ut_print_filename(stderr, name); + fprintf(stderr, "\n" + "InnoDB: in InnoDB data dictionary" + " has unknown type %lx.\n", + (ulong) flags); + + goto loop; + } + + field = rec_get_nth_field_old(rec, 9, &len); + ut_a(len == 4); + + space_id = mach_read_from_4(field); + + btr_pcur_store_position(&pcur, &mtr); + + mtr_commit(&mtr); + + if (space_id != 0 && in_crash_recovery) { + /* Check that the tablespace (the .ibd file) really + exists; print a warning to the .err log if not */ + + fil_space_for_table_exists_in_mem(space_id, name, + FALSE, TRUE, TRUE); + } + + if (space_id != 0 && !in_crash_recovery) { + /* It is a normal database startup: create the space + object and check that the .ibd file exists. */ + + fil_open_single_table_tablespace(FALSE, space_id, + flags, name); + } + + mem_free(name); + + if (space_id > max_space_id) { + max_space_id = space_id; + } + + mtr_start(&mtr); + + btr_pcur_restore_position(BTR_SEARCH_LEAF, &pcur, &mtr); + } + + goto loop; +} + +/************************************************************************ +Loads definitions for table columns. */ +static +void +dict_load_columns( +/*==============*/ + dict_table_t* table, /* in: table */ + mem_heap_t* heap) /* in: memory heap for temporary storage */ +{ + dict_table_t* sys_columns; + dict_index_t* sys_index; + btr_pcur_t pcur; + dtuple_t* tuple; + dfield_t* dfield; + const rec_t* rec; + const byte* field; + ulint len; + byte* buf; + char* name; + ulint mtype; + ulint prtype; + ulint col_len; + ulint i; + mtr_t mtr; + + ut_ad(mutex_own(&(dict_sys->mutex))); + + mtr_start(&mtr); + + sys_columns = dict_table_get_low("SYS_COLUMNS"); + sys_index = UT_LIST_GET_FIRST(sys_columns->indexes); + ut_a(!dict_table_is_comp(sys_columns)); + + tuple = dtuple_create(heap, 1); + dfield = dtuple_get_nth_field(tuple, 0); + + buf = mem_heap_alloc(heap, 8); + mach_write_to_8(buf, table->id); + + dfield_set_data(dfield, buf, 8); + dict_index_copy_types(tuple, sys_index, 1); + + btr_pcur_open_on_user_rec(sys_index, tuple, PAGE_CUR_GE, + BTR_SEARCH_LEAF, &pcur, &mtr); + for (i = 0; i + DATA_N_SYS_COLS < (ulint) table->n_cols; i++) { + + rec = btr_pcur_get_rec(&pcur); + + ut_a(btr_pcur_is_on_user_rec(&pcur)); + + ut_a(!rec_get_deleted_flag(rec, 0)); + + field = rec_get_nth_field_old(rec, 0, &len); + ut_ad(len == 8); + ut_a(ut_dulint_cmp(table->id, mach_read_from_8(field)) == 0); + + field = rec_get_nth_field_old(rec, 1, &len); + ut_ad(len == 4); + ut_a(i == mach_read_from_4(field)); + + ut_a(name_of_col_is(sys_columns, sys_index, 4, "NAME")); + + field = rec_get_nth_field_old(rec, 4, &len); + name = mem_heap_strdupl(heap, (char*) field, len); + + field = rec_get_nth_field_old(rec, 5, &len); + mtype = mach_read_from_4(field); + + field = rec_get_nth_field_old(rec, 6, &len); + prtype = mach_read_from_4(field); + + if (dtype_get_charset_coll(prtype) == 0 + && dtype_is_string_type(mtype)) { + /* The table was created with < 4.1.2. */ + + if (dtype_is_binary_string_type(mtype, prtype)) { + /* Use the binary collation for + string columns of binary type. */ + + prtype = dtype_form_prtype( + prtype, + DATA_MYSQL_BINARY_CHARSET_COLL); + } else { + /* Use the default charset for + other than binary columns. */ + + prtype = dtype_form_prtype( + prtype, + data_mysql_default_charset_coll); + } + } + + field = rec_get_nth_field_old(rec, 7, &len); + col_len = mach_read_from_4(field); + + ut_a(name_of_col_is(sys_columns, sys_index, 8, "PREC")); + + dict_mem_table_add_col(table, heap, name, + mtype, prtype, col_len); + btr_pcur_move_to_next_user_rec(&pcur, &mtr); + } + + btr_pcur_close(&pcur); + mtr_commit(&mtr); +} + +/************************************************************************ +Loads definitions for index fields. */ +static +void +dict_load_fields( +/*=============*/ + dict_index_t* index, /* in: index whose fields to load */ + mem_heap_t* heap) /* in: memory heap for temporary storage */ +{ + dict_table_t* sys_fields; + dict_index_t* sys_index; + btr_pcur_t pcur; + dtuple_t* tuple; + dfield_t* dfield; + ulint pos_and_prefix_len; + ulint prefix_len; + const rec_t* rec; + const byte* field; + ulint len; + byte* buf; + ulint i; + mtr_t mtr; + + ut_ad(mutex_own(&(dict_sys->mutex))); + + mtr_start(&mtr); + + sys_fields = dict_table_get_low("SYS_FIELDS"); + sys_index = UT_LIST_GET_FIRST(sys_fields->indexes); + ut_a(!dict_table_is_comp(sys_fields)); + + tuple = dtuple_create(heap, 1); + dfield = dtuple_get_nth_field(tuple, 0); + + buf = mem_heap_alloc(heap, 8); + mach_write_to_8(buf, index->id); + + dfield_set_data(dfield, buf, 8); + dict_index_copy_types(tuple, sys_index, 1); + + btr_pcur_open_on_user_rec(sys_index, tuple, PAGE_CUR_GE, + BTR_SEARCH_LEAF, &pcur, &mtr); + for (i = 0; i < index->n_fields; i++) { + + rec = btr_pcur_get_rec(&pcur); + + ut_a(btr_pcur_is_on_user_rec(&pcur)); + + /* There could be delete marked records in SYS_FIELDS + because SYS_FIELDS.INDEX_ID can be updated + by ALTER TABLE ADD INDEX. */ + + if (rec_get_deleted_flag(rec, 0)) { + + goto next_rec; + } + + field = rec_get_nth_field_old(rec, 0, &len); + ut_ad(len == 8); + + field = rec_get_nth_field_old(rec, 1, &len); + ut_a(len == 4); + + /* The next field stores the field position in the index + and a possible column prefix length if the index field + does not contain the whole column. The storage format is + like this: if there is at least one prefix field in the index, + then the HIGH 2 bytes contain the field number (== i) and the + low 2 bytes the prefix length for the field. Otherwise the + field number (== i) is contained in the 2 LOW bytes. */ + + pos_and_prefix_len = mach_read_from_4(field); + + ut_a((pos_and_prefix_len & 0xFFFFUL) == i + || (pos_and_prefix_len & 0xFFFF0000UL) == (i << 16)); + + if ((i == 0 && pos_and_prefix_len > 0) + || (pos_and_prefix_len & 0xFFFF0000UL) > 0) { + + prefix_len = pos_and_prefix_len & 0xFFFFUL; + } else { + prefix_len = 0; + } + + ut_a(name_of_col_is(sys_fields, sys_index, 4, "COL_NAME")); + + field = rec_get_nth_field_old(rec, 4, &len); + + dict_mem_index_add_field(index, + mem_heap_strdupl(heap, + (char*) field, len), + prefix_len); + +next_rec: + btr_pcur_move_to_next_user_rec(&pcur, &mtr); + } + + btr_pcur_close(&pcur); + mtr_commit(&mtr); +} + +/************************************************************************ +Loads definitions for table indexes. Adds them to the data dictionary +cache. */ +static +ulint +dict_load_indexes( +/*==============*/ + /* out: DB_SUCCESS if ok, DB_CORRUPTION + if corruption of dictionary table or + DB_UNSUPPORTED if table has unknown index + type */ + dict_table_t* table, /* in: table */ + mem_heap_t* heap) /* in: memory heap for temporary storage */ +{ + dict_table_t* sys_indexes; + dict_index_t* sys_index; + dict_index_t* index; + btr_pcur_t pcur; + dtuple_t* tuple; + dfield_t* dfield; + const rec_t* rec; + const byte* field; + ulint len; + ulint name_len; + char* name_buf; + ulint type; + ulint space; + ulint page_no; + ulint n_fields; + byte* buf; + ibool is_sys_table; + dulint id; + mtr_t mtr; + ulint error = DB_SUCCESS; + + ut_ad(mutex_own(&(dict_sys->mutex))); + + if ((ut_dulint_get_high(table->id) == 0) + && (ut_dulint_get_low(table->id) < DICT_HDR_FIRST_ID)) { + is_sys_table = TRUE; + } else { + is_sys_table = FALSE; + } + + mtr_start(&mtr); + + sys_indexes = dict_table_get_low("SYS_INDEXES"); + sys_index = UT_LIST_GET_FIRST(sys_indexes->indexes); + ut_a(!dict_table_is_comp(sys_indexes)); + + tuple = dtuple_create(heap, 1); + dfield = dtuple_get_nth_field(tuple, 0); + + buf = mem_heap_alloc(heap, 8); + mach_write_to_8(buf, table->id); + + dfield_set_data(dfield, buf, 8); + dict_index_copy_types(tuple, sys_index, 1); + + btr_pcur_open_on_user_rec(sys_index, tuple, PAGE_CUR_GE, + BTR_SEARCH_LEAF, &pcur, &mtr); + for (;;) { + if (!btr_pcur_is_on_user_rec(&pcur)) { + + break; + } + + rec = btr_pcur_get_rec(&pcur); + + field = rec_get_nth_field_old(rec, 0, &len); + ut_ad(len == 8); + + if (ut_memcmp(buf, field, len) != 0) { + break; + } else if (rec_get_deleted_flag(rec, 0)) { + /* Skip delete marked records */ + goto next_rec; + } + + field = rec_get_nth_field_old(rec, 1, &len); + ut_ad(len == 8); + id = mach_read_from_8(field); + + ut_a(name_of_col_is(sys_indexes, sys_index, 4, "NAME")); + + field = rec_get_nth_field_old(rec, 4, &name_len); + name_buf = mem_heap_strdupl(heap, (char*) field, name_len); + + field = rec_get_nth_field_old(rec, 5, &len); + n_fields = mach_read_from_4(field); + + field = rec_get_nth_field_old(rec, 6, &len); + type = mach_read_from_4(field); + + field = rec_get_nth_field_old(rec, 7, &len); + space = mach_read_from_4(field); + + ut_a(name_of_col_is(sys_indexes, sys_index, 8, "PAGE_NO")); + + field = rec_get_nth_field_old(rec, 8, &len); + page_no = mach_read_from_4(field); + + /* We check for unsupported types first, so that the + subsequent checks are relevant for the supported types. */ + if (type & ~(DICT_CLUSTERED | DICT_UNIQUE)) { + + fprintf(stderr, + "InnoDB: Error: unknown type %lu" + " of index %s of table %s\n", + (ulong) type, name_buf, table->name); + + error = DB_UNSUPPORTED; + goto func_exit; + } else if (page_no == FIL_NULL) { + + fprintf(stderr, + "InnoDB: Error: trying to load index %s" + " for table %s\n" + "InnoDB: but the index tree has been freed!\n", + name_buf, table->name); + + error = DB_CORRUPTION; + goto func_exit; + } else if ((type & DICT_CLUSTERED) == 0 + && NULL == dict_table_get_first_index(table)) { + + fputs("InnoDB: Error: trying to load index ", + stderr); + ut_print_name(stderr, NULL, FALSE, name_buf); + fputs(" for table ", stderr); + ut_print_name(stderr, NULL, TRUE, table->name); + fputs("\nInnoDB: but the first index" + " is not clustered!\n", stderr); + + error = DB_CORRUPTION; + goto func_exit; + } else if (is_sys_table + && ((type & DICT_CLUSTERED) + || ((table == dict_sys->sys_tables) + && (name_len == (sizeof "ID_IND") - 1) + && (0 == ut_memcmp(name_buf, + "ID_IND", name_len))))) { + + /* The index was created in memory already at booting + of the database server */ + } else { + index = dict_mem_index_create(table->name, name_buf, + space, type, n_fields); + index->id = id; + + dict_load_fields(index, heap); + error = dict_index_add_to_cache(table, index, page_no, + FALSE); + /* The data dictionary tables should never contain + invalid index definitions. If we ignored this error + and simply did not load this index definition, the + .frm file would disagree with the index definitions + inside InnoDB. */ + if (UNIV_UNLIKELY(error != DB_SUCCESS)) { + + goto func_exit; + } + } + +next_rec: + btr_pcur_move_to_next_user_rec(&pcur, &mtr); + } + +func_exit: + btr_pcur_close(&pcur); + mtr_commit(&mtr); + + return(error); +} + +/************************************************************************ +Loads a table definition and also all its index definitions, and also +the cluster definition if the table is a member in a cluster. Also loads +all foreign key constraints where the foreign key is in the table or where +a foreign key references columns in this table. Adds all these to the data +dictionary cache. */ +UNIV_INTERN +dict_table_t* +dict_load_table( +/*============*/ + /* out: table, NULL if does not exist; + if the table is stored in an .ibd file, + but the file does not exist, + then we set the ibd_file_missing flag TRUE + in the table object we return */ + const char* name) /* in: table name in the + databasename/tablename format */ +{ + ibool ibd_file_missing = FALSE; + dict_table_t* table; + dict_table_t* sys_tables; + btr_pcur_t pcur; + dict_index_t* sys_index; + dtuple_t* tuple; + mem_heap_t* heap; + dfield_t* dfield; + const rec_t* rec; + const byte* field; + ulint len; + ulint space; + ulint n_cols; + ulint flags; + ulint err; + mtr_t mtr; + + ut_ad(mutex_own(&(dict_sys->mutex))); + + heap = mem_heap_create(32000); + + mtr_start(&mtr); + + sys_tables = dict_table_get_low("SYS_TABLES"); + sys_index = UT_LIST_GET_FIRST(sys_tables->indexes); + ut_a(!dict_table_is_comp(sys_tables)); + + tuple = dtuple_create(heap, 1); + dfield = dtuple_get_nth_field(tuple, 0); + + dfield_set_data(dfield, name, ut_strlen(name)); + dict_index_copy_types(tuple, sys_index, 1); + + btr_pcur_open_on_user_rec(sys_index, tuple, PAGE_CUR_GE, + BTR_SEARCH_LEAF, &pcur, &mtr); + rec = btr_pcur_get_rec(&pcur); + + if (!btr_pcur_is_on_user_rec(&pcur) + || rec_get_deleted_flag(rec, 0)) { + /* Not found */ +err_exit: + btr_pcur_close(&pcur); + mtr_commit(&mtr); + mem_heap_free(heap); + + return(NULL); + } + + field = rec_get_nth_field_old(rec, 0, &len); + + /* Check if the table name in record is the searched one */ + if (len != ut_strlen(name) || ut_memcmp(name, field, len) != 0) { + + goto err_exit; + } + + ut_a(name_of_col_is(sys_tables, sys_index, 9, "SPACE")); + + field = rec_get_nth_field_old(rec, 9, &len); + space = mach_read_from_4(field); + + /* Check if the tablespace exists and has the right name */ + if (space != 0) { + flags = dict_sys_tables_get_flags(rec); + + if (UNIV_UNLIKELY(flags == ULINT_UNDEFINED)) { + field = rec_get_nth_field_old(rec, 5, &len); + flags = mach_read_from_4(field); + + ut_print_timestamp(stderr); + fputs(" InnoDB: Error: table ", stderr); + ut_print_filename(stderr, name); + fprintf(stderr, "\n" + "InnoDB: in InnoDB data dictionary" + " has unknown type %lx.\n", + (ulong) flags); + goto err_exit; + } + + if (fil_space_for_table_exists_in_mem(space, name, FALSE, + FALSE, FALSE)) { + /* Ok; (if we did a crash recovery then the tablespace + can already be in the memory cache) */ + } else { + /* In >= 4.1.9, InnoDB scans the data dictionary also + at a normal mysqld startup. It is an error if the + space object does not exist in memory. */ + + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: error: space object of table %s,\n" + "InnoDB: space id %lu did not exist in memory." + " Retrying an open.\n", + name, (ulong)space); + /* Try to open the tablespace */ + if (!fil_open_single_table_tablespace( + TRUE, space, flags, name)) { + /* We failed to find a sensible tablespace + file */ + + ibd_file_missing = TRUE; + } + } + } else { + flags = 0; + } + + ut_a(name_of_col_is(sys_tables, sys_index, 4, "N_COLS")); + + field = rec_get_nth_field_old(rec, 4, &len); + n_cols = mach_read_from_4(field); + + /* The high-order bit of N_COLS is the "compact format" flag. */ + if (n_cols & 0x80000000UL) { + flags |= DICT_TF_COMPACT; + } + + table = dict_mem_table_create(name, space, n_cols & ~0x80000000UL, + flags); + + table->ibd_file_missing = (unsigned int) ibd_file_missing; + + ut_a(name_of_col_is(sys_tables, sys_index, 3, "ID")); + + field = rec_get_nth_field_old(rec, 3, &len); + table->id = mach_read_from_8(field); + + btr_pcur_close(&pcur); + mtr_commit(&mtr); + + dict_load_columns(table, heap); + + dict_table_add_to_cache(table, heap); + + mem_heap_empty(heap); + + err = dict_load_indexes(table, heap); +#ifndef UNIV_HOTBACKUP + /* If the force recovery flag is set, we open the table irrespective + of the error condition, since the user may want to dump data from the + clustered index. However we load the foreign key information only if + all indexes were loaded. */ + if (err == DB_SUCCESS) { + err = dict_load_foreigns(table->name, TRUE); + } else if (!srv_force_recovery) { + dict_table_remove_from_cache(table); + table = NULL; + } +# if 0 + if (err != DB_SUCCESS && table != NULL) { + + mutex_enter(&dict_foreign_err_mutex); + + ut_print_timestamp(stderr); + + fprintf(stderr, + " InnoDB: Error: could not make a foreign key" + " definition to match\n" + "InnoDB: the foreign key table" + " or the referenced table!\n" + "InnoDB: The data dictionary of InnoDB is corrupt." + " You may need to drop\n" + "InnoDB: and recreate the foreign key table" + " or the referenced table.\n" + "InnoDB: Submit a detailed bug report" + " to http://bugs.mysql.com\n" + "InnoDB: Latest foreign key error printout:\n%s\n", + dict_foreign_err_buf); + + mutex_exit(&dict_foreign_err_mutex); + } +# endif /* 0 */ +#endif /* !UNIV_HOTBACKUP */ + mem_heap_free(heap); + + return(table); +} + +/*************************************************************************** +Loads a table object based on the table id. */ +UNIV_INTERN +dict_table_t* +dict_load_table_on_id( +/*==================*/ + /* out: table; NULL if table does not exist */ + dulint table_id) /* in: table id */ +{ + byte id_buf[8]; + btr_pcur_t pcur; + mem_heap_t* heap; + dtuple_t* tuple; + dfield_t* dfield; + dict_index_t* sys_table_ids; + dict_table_t* sys_tables; + const rec_t* rec; + const byte* field; + ulint len; + dict_table_t* table; + mtr_t mtr; + + ut_ad(mutex_own(&(dict_sys->mutex))); + + /* NOTE that the operation of this function is protected by + the dictionary mutex, and therefore no deadlocks can occur + with other dictionary operations. */ + + mtr_start(&mtr); + /*---------------------------------------------------*/ + /* Get the secondary index based on ID for table SYS_TABLES */ + sys_tables = dict_sys->sys_tables; + sys_table_ids = dict_table_get_next_index( + dict_table_get_first_index(sys_tables)); + ut_a(!dict_table_is_comp(sys_tables)); + heap = mem_heap_create(256); + + tuple = dtuple_create(heap, 1); + dfield = dtuple_get_nth_field(tuple, 0); + + /* Write the table id in byte format to id_buf */ + mach_write_to_8(id_buf, table_id); + + dfield_set_data(dfield, id_buf, 8); + dict_index_copy_types(tuple, sys_table_ids, 1); + + btr_pcur_open_on_user_rec(sys_table_ids, tuple, PAGE_CUR_GE, + BTR_SEARCH_LEAF, &pcur, &mtr); + rec = btr_pcur_get_rec(&pcur); + + if (!btr_pcur_is_on_user_rec(&pcur) + || rec_get_deleted_flag(rec, 0)) { + /* Not found */ + + btr_pcur_close(&pcur); + mtr_commit(&mtr); + mem_heap_free(heap); + + return(NULL); + } + + /*---------------------------------------------------*/ + /* Now we have the record in the secondary index containing the + table ID and NAME */ + + rec = btr_pcur_get_rec(&pcur); + field = rec_get_nth_field_old(rec, 0, &len); + ut_ad(len == 8); + + /* Check if the table id in record is the one searched for */ + if (ut_dulint_cmp(table_id, mach_read_from_8(field)) != 0) { + + btr_pcur_close(&pcur); + mtr_commit(&mtr); + mem_heap_free(heap); + + return(NULL); + } + + /* Now we get the table name from the record */ + field = rec_get_nth_field_old(rec, 1, &len); + /* Load the table definition to memory */ + table = dict_load_table(mem_heap_strdupl(heap, (char*) field, len)); + + btr_pcur_close(&pcur); + mtr_commit(&mtr); + mem_heap_free(heap); + + return(table); +} + +/************************************************************************ +This function is called when the database is booted. Loads system table +index definitions except for the clustered index which is added to the +dictionary cache at booting before calling this function. */ +UNIV_INTERN +void +dict_load_sys_table( +/*================*/ + dict_table_t* table) /* in: system table */ +{ + mem_heap_t* heap; + + ut_ad(mutex_own(&(dict_sys->mutex))); + + heap = mem_heap_create(1000); + + dict_load_indexes(table, heap); + + mem_heap_free(heap); +} + +#ifndef UNIV_HOTBACKUP +/************************************************************************ +Loads foreign key constraint col names (also for the referenced table). */ +static +void +dict_load_foreign_cols( +/*===================*/ + const char* id, /* in: foreign constraint id as a + null-terminated string */ + dict_foreign_t* foreign)/* in: foreign constraint object */ +{ + dict_table_t* sys_foreign_cols; + dict_index_t* sys_index; + btr_pcur_t pcur; + dtuple_t* tuple; + dfield_t* dfield; + const rec_t* rec; + const byte* field; + ulint len; + ulint i; + mtr_t mtr; + + ut_ad(mutex_own(&(dict_sys->mutex))); + + foreign->foreign_col_names = mem_heap_alloc( + foreign->heap, foreign->n_fields * sizeof(void*)); + + foreign->referenced_col_names = mem_heap_alloc( + foreign->heap, foreign->n_fields * sizeof(void*)); + mtr_start(&mtr); + + sys_foreign_cols = dict_table_get_low("SYS_FOREIGN_COLS"); + sys_index = UT_LIST_GET_FIRST(sys_foreign_cols->indexes); + ut_a(!dict_table_is_comp(sys_foreign_cols)); + + tuple = dtuple_create(foreign->heap, 1); + dfield = dtuple_get_nth_field(tuple, 0); + + dfield_set_data(dfield, id, ut_strlen(id)); + dict_index_copy_types(tuple, sys_index, 1); + + btr_pcur_open_on_user_rec(sys_index, tuple, PAGE_CUR_GE, + BTR_SEARCH_LEAF, &pcur, &mtr); + for (i = 0; i < foreign->n_fields; i++) { + + rec = btr_pcur_get_rec(&pcur); + + ut_a(btr_pcur_is_on_user_rec(&pcur)); + ut_a(!rec_get_deleted_flag(rec, 0)); + + field = rec_get_nth_field_old(rec, 0, &len); + ut_a(len == ut_strlen(id)); + ut_a(ut_memcmp(id, field, len) == 0); + + field = rec_get_nth_field_old(rec, 1, &len); + ut_a(len == 4); + ut_a(i == mach_read_from_4(field)); + + field = rec_get_nth_field_old(rec, 4, &len); + foreign->foreign_col_names[i] = mem_heap_strdupl( + foreign->heap, (char*) field, len); + + field = rec_get_nth_field_old(rec, 5, &len); + foreign->referenced_col_names[i] = mem_heap_strdupl( + foreign->heap, (char*) field, len); + + btr_pcur_move_to_next_user_rec(&pcur, &mtr); + } + + btr_pcur_close(&pcur); + mtr_commit(&mtr); +} + +/*************************************************************************** +Loads a foreign key constraint to the dictionary cache. */ +static +ulint +dict_load_foreign( +/*==============*/ + /* out: DB_SUCCESS or error code */ + const char* id, /* in: foreign constraint id as a + null-terminated string */ + ibool check_charsets) + /* in: TRUE=check charset compatibility */ +{ + dict_foreign_t* foreign; + dict_table_t* sys_foreign; + btr_pcur_t pcur; + dict_index_t* sys_index; + dtuple_t* tuple; + mem_heap_t* heap2; + dfield_t* dfield; + const rec_t* rec; + const byte* field; + ulint len; + ulint n_fields_and_type; + mtr_t mtr; + + ut_ad(mutex_own(&(dict_sys->mutex))); + + heap2 = mem_heap_create(1000); + + mtr_start(&mtr); + + sys_foreign = dict_table_get_low("SYS_FOREIGN"); + sys_index = UT_LIST_GET_FIRST(sys_foreign->indexes); + ut_a(!dict_table_is_comp(sys_foreign)); + + tuple = dtuple_create(heap2, 1); + dfield = dtuple_get_nth_field(tuple, 0); + + dfield_set_data(dfield, id, ut_strlen(id)); + dict_index_copy_types(tuple, sys_index, 1); + + btr_pcur_open_on_user_rec(sys_index, tuple, PAGE_CUR_GE, + BTR_SEARCH_LEAF, &pcur, &mtr); + rec = btr_pcur_get_rec(&pcur); + + if (!btr_pcur_is_on_user_rec(&pcur) + || rec_get_deleted_flag(rec, 0)) { + /* Not found */ + + fprintf(stderr, + "InnoDB: Error A: cannot load foreign constraint %s\n", + id); + + btr_pcur_close(&pcur); + mtr_commit(&mtr); + mem_heap_free(heap2); + + return(DB_ERROR); + } + + field = rec_get_nth_field_old(rec, 0, &len); + + /* Check if the id in record is the searched one */ + if (len != ut_strlen(id) || ut_memcmp(id, field, len) != 0) { + + fprintf(stderr, + "InnoDB: Error B: cannot load foreign constraint %s\n", + id); + + btr_pcur_close(&pcur); + mtr_commit(&mtr); + mem_heap_free(heap2); + + return(DB_ERROR); + } + + /* Read the table names and the number of columns associated + with the constraint */ + + mem_heap_free(heap2); + + foreign = dict_mem_foreign_create(); + + n_fields_and_type = mach_read_from_4( + rec_get_nth_field_old(rec, 5, &len)); + + ut_a(len == 4); + + /* We store the type in the bits 24..29 of n_fields_and_type. */ + + foreign->type = (unsigned int) (n_fields_and_type >> 24); + foreign->n_fields = (unsigned int) (n_fields_and_type & 0x3FFUL); + + foreign->id = mem_heap_strdup(foreign->heap, id); + + field = rec_get_nth_field_old(rec, 3, &len); + foreign->foreign_table_name = mem_heap_strdupl( + foreign->heap, (char*) field, len); + + field = rec_get_nth_field_old(rec, 4, &len); + foreign->referenced_table_name = mem_heap_strdupl( + foreign->heap, (char*) field, len); + + btr_pcur_close(&pcur); + mtr_commit(&mtr); + + dict_load_foreign_cols(id, foreign); + + /* If the foreign table is not yet in the dictionary cache, we + have to load it so that we are able to make type comparisons + in the next function call. */ + + dict_table_get_low(foreign->foreign_table_name); + + /* Note that there may already be a foreign constraint object in + the dictionary cache for this constraint: then the following + call only sets the pointers in it to point to the appropriate table + and index objects and frees the newly created object foreign. + Adding to the cache should always succeed since we are not creating + a new foreign key constraint but loading one from the data + dictionary. */ + + return(dict_foreign_add_to_cache(foreign, check_charsets)); +} + +/*************************************************************************** +Loads foreign key constraints where the table is either the foreign key +holder or where the table is referenced by a foreign key. Adds these +constraints to the data dictionary. Note that we know that the dictionary +cache already contains all constraints where the other relevant table is +already in the dictionary cache. */ +UNIV_INTERN +ulint +dict_load_foreigns( +/*===============*/ + /* out: DB_SUCCESS or error code */ + const char* table_name, /* in: table name */ + ibool check_charsets) /* in: TRUE=check charset + compatibility */ +{ + btr_pcur_t pcur; + mem_heap_t* heap; + dtuple_t* tuple; + dfield_t* dfield; + dict_index_t* sec_index; + dict_table_t* sys_foreign; + const rec_t* rec; + const byte* field; + ulint len; + char* id ; + ulint err; + mtr_t mtr; + + ut_ad(mutex_own(&(dict_sys->mutex))); + + sys_foreign = dict_table_get_low("SYS_FOREIGN"); + + if (sys_foreign == NULL) { + /* No foreign keys defined yet in this database */ + + fprintf(stderr, + "InnoDB: Error: no foreign key system tables" + " in the database\n"); + + return(DB_ERROR); + } + + ut_a(!dict_table_is_comp(sys_foreign)); + mtr_start(&mtr); + + /* Get the secondary index based on FOR_NAME from table + SYS_FOREIGN */ + + sec_index = dict_table_get_next_index( + dict_table_get_first_index(sys_foreign)); +start_load: + heap = mem_heap_create(256); + + tuple = dtuple_create(heap, 1); + dfield = dtuple_get_nth_field(tuple, 0); + + dfield_set_data(dfield, table_name, ut_strlen(table_name)); + dict_index_copy_types(tuple, sec_index, 1); + + btr_pcur_open_on_user_rec(sec_index, tuple, PAGE_CUR_GE, + BTR_SEARCH_LEAF, &pcur, &mtr); +loop: + rec = btr_pcur_get_rec(&pcur); + + if (!btr_pcur_is_on_user_rec(&pcur)) { + /* End of index */ + + goto load_next_index; + } + + /* Now we have the record in the secondary index containing a table + name and a foreign constraint ID */ + + rec = btr_pcur_get_rec(&pcur); + field = rec_get_nth_field_old(rec, 0, &len); + + /* Check if the table name in the record is the one searched for; the + following call does the comparison in the latin1_swedish_ci + charset-collation, in a case-insensitive way. */ + + if (0 != cmp_data_data(dfield_get_type(dfield)->mtype, + dfield_get_type(dfield)->prtype, + dfield_get_data(dfield), dfield_get_len(dfield), + field, len)) { + + goto load_next_index; + } + + /* Since table names in SYS_FOREIGN are stored in a case-insensitive + order, we have to check that the table name matches also in a binary + string comparison. On Unix, MySQL allows table names that only differ + in character case. */ + + if (0 != ut_memcmp(field, table_name, len)) { + + goto next_rec; + } + + if (rec_get_deleted_flag(rec, 0)) { + + goto next_rec; + } + + /* Now we get a foreign key constraint id */ + field = rec_get_nth_field_old(rec, 1, &len); + id = mem_heap_strdupl(heap, (char*) field, len); + + btr_pcur_store_position(&pcur, &mtr); + + mtr_commit(&mtr); + + /* Load the foreign constraint definition to the dictionary cache */ + + err = dict_load_foreign(id, check_charsets); + + if (err != DB_SUCCESS) { + btr_pcur_close(&pcur); + mem_heap_free(heap); + + return(err); + } + + mtr_start(&mtr); + + btr_pcur_restore_position(BTR_SEARCH_LEAF, &pcur, &mtr); +next_rec: + btr_pcur_move_to_next_user_rec(&pcur, &mtr); + + goto loop; + +load_next_index: + btr_pcur_close(&pcur); + mtr_commit(&mtr); + mem_heap_free(heap); + + sec_index = dict_table_get_next_index(sec_index); + + if (sec_index != NULL) { + + mtr_start(&mtr); + + goto start_load; + } + + return(DB_SUCCESS); +} +#endif /* !UNIV_HOTBACKUP */ === added file 'storage/xtradb/dict/dict0mem.c' --- a/storage/xtradb/dict/dict0mem.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/dict/dict0mem.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,308 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/********************************************************************** +Data dictionary memory object creation + +Created 1/8/1996 Heikki Tuuri +***********************************************************************/ + +#include "dict0mem.h" + +#ifdef UNIV_NONINL +#include "dict0mem.ic" +#endif + +#include "rem0rec.h" +#include "data0type.h" +#include "mach0data.h" +#include "dict0dict.h" +#include "lock0lock.h" + +#define DICT_HEAP_SIZE 100 /* initial memory heap size when + creating a table or index object */ + +/************************************************************************** +Creates a table memory object. */ +UNIV_INTERN +dict_table_t* +dict_mem_table_create( +/*==================*/ + /* out, own: table object */ + const char* name, /* in: table name */ + ulint space, /* in: space where the clustered index of + the table is placed; this parameter is + ignored if the table is made a member of + a cluster */ + ulint n_cols, /* in: number of columns */ + ulint flags) /* in: table flags */ +{ + dict_table_t* table; + mem_heap_t* heap; + + ut_ad(name); + ut_a(!(flags & (~0 << DICT_TF_BITS))); + + heap = mem_heap_create(DICT_HEAP_SIZE); + + table = mem_heap_zalloc(heap, sizeof(dict_table_t)); + + table->heap = heap; + + table->flags = (unsigned int) flags; + table->name = mem_heap_strdup(heap, name); + table->space = (unsigned int) space; + table->n_cols = (unsigned int) (n_cols + DATA_N_SYS_COLS); + + table->cols = mem_heap_alloc(heap, (n_cols + DATA_N_SYS_COLS) + * sizeof(dict_col_t)); + + table->autoinc_lock = mem_heap_alloc(heap, lock_get_size()); + + mutex_create(&table->autoinc_mutex, SYNC_DICT_AUTOINC_MUTEX); + + table->autoinc = 0; + + /* The number of transactions that are either waiting on the + AUTOINC lock or have been granted the lock. */ + table->n_waiting_or_granted_auto_inc_locks = 0; + +#ifdef UNIV_DEBUG + table->magic_n = DICT_TABLE_MAGIC_N; +#endif /* UNIV_DEBUG */ + return(table); +} + +/******************************************************************** +Free a table memory object. */ +UNIV_INTERN +void +dict_mem_table_free( +/*================*/ + dict_table_t* table) /* in: table */ +{ + ut_ad(table); + ut_ad(table->magic_n == DICT_TABLE_MAGIC_N); + ut_d(table->cached = FALSE); + + mutex_free(&(table->autoinc_mutex)); + mem_heap_free(table->heap); +} + +/******************************************************************** +Append 'name' to 'col_names' (@see dict_table_t::col_names). */ +static +const char* +dict_add_col_name( +/*==============*/ + /* out: new column names array */ + const char* col_names, /* in: existing column names, or + NULL */ + ulint cols, /* in: number of existing columns */ + const char* name, /* in: new column name */ + mem_heap_t* heap) /* in: heap */ +{ + ulint old_len; + ulint new_len; + ulint total_len; + char* res; + + ut_ad(!cols == !col_names); + + /* Find out length of existing array. */ + if (col_names) { + const char* s = col_names; + ulint i; + + for (i = 0; i < cols; i++) { + s += strlen(s) + 1; + } + + old_len = s - col_names; + } else { + old_len = 0; + } + + new_len = strlen(name) + 1; + total_len = old_len + new_len; + + res = mem_heap_alloc(heap, total_len); + + if (old_len > 0) { + memcpy(res, col_names, old_len); + } + + memcpy(res + old_len, name, new_len); + + return(res); +} + +/************************************************************************** +Adds a column definition to a table. */ +UNIV_INTERN +void +dict_mem_table_add_col( +/*===================*/ + dict_table_t* table, /* in: table */ + mem_heap_t* heap, /* in: temporary memory heap, or NULL */ + const char* name, /* in: column name, or NULL */ + ulint mtype, /* in: main datatype */ + ulint prtype, /* in: precise type */ + ulint len) /* in: precision */ +{ + dict_col_t* col; + ulint mbminlen; + ulint mbmaxlen; + ulint i; + + ut_ad(table); + ut_ad(table->magic_n == DICT_TABLE_MAGIC_N); + ut_ad(!heap == !name); + + i = table->n_def++; + + if (name) { + if (UNIV_UNLIKELY(table->n_def == table->n_cols)) { + heap = table->heap; + } + if (UNIV_LIKELY(i) && UNIV_UNLIKELY(!table->col_names)) { + /* All preceding column names are empty. */ + char* s = mem_heap_zalloc(heap, table->n_def); + table->col_names = s; + } + + table->col_names = dict_add_col_name(table->col_names, + i, name, heap); + } + + col = dict_table_get_nth_col(table, i); + + col->ind = (unsigned int) i; + col->ord_part = 0; + + col->mtype = (unsigned int) mtype; + col->prtype = (unsigned int) prtype; + col->len = (unsigned int) len; + + dtype_get_mblen(mtype, prtype, &mbminlen, &mbmaxlen); + + col->mbminlen = (unsigned int) mbminlen; + col->mbmaxlen = (unsigned int) mbmaxlen; +} + +/************************************************************************** +Creates an index memory object. */ +UNIV_INTERN +dict_index_t* +dict_mem_index_create( +/*==================*/ + /* out, own: index object */ + const char* table_name, /* in: table name */ + const char* index_name, /* in: index name */ + ulint space, /* in: space where the index tree is + placed, ignored if the index is of + the clustered type */ + ulint type, /* in: DICT_UNIQUE, + DICT_CLUSTERED, ... ORed */ + ulint n_fields) /* in: number of fields */ +{ + dict_index_t* index; + mem_heap_t* heap; + + ut_ad(table_name && index_name); + + heap = mem_heap_create(DICT_HEAP_SIZE); + index = mem_heap_zalloc(heap, sizeof(dict_index_t)); + + index->heap = heap; + + index->type = type; + index->space = (unsigned int) space; + index->name = mem_heap_strdup(heap, index_name); + index->table_name = table_name; + index->n_fields = (unsigned int) n_fields; + index->fields = mem_heap_alloc(heap, 1 + n_fields + * sizeof(dict_field_t)); + /* The '1 +' above prevents allocation + of an empty mem block */ +#ifdef UNIV_DEBUG + index->magic_n = DICT_INDEX_MAGIC_N; +#endif /* UNIV_DEBUG */ + return(index); +} + +/************************************************************************** +Creates and initializes a foreign constraint memory object. */ +UNIV_INTERN +dict_foreign_t* +dict_mem_foreign_create(void) +/*=========================*/ + /* out, own: foreign constraint struct */ +{ + dict_foreign_t* foreign; + mem_heap_t* heap; + + heap = mem_heap_create(100); + + foreign = mem_heap_zalloc(heap, sizeof(dict_foreign_t)); + + foreign->heap = heap; + + return(foreign); +} + +/************************************************************************** +Adds a field definition to an index. NOTE: does not take a copy +of the column name if the field is a column. The memory occupied +by the column name may be released only after publishing the index. */ +UNIV_INTERN +void +dict_mem_index_add_field( +/*=====================*/ + dict_index_t* index, /* in: index */ + const char* name, /* in: column name */ + ulint prefix_len) /* in: 0 or the column prefix length + in a MySQL index like + INDEX (textcol(25)) */ +{ + dict_field_t* field; + + ut_ad(index); + ut_ad(index->magic_n == DICT_INDEX_MAGIC_N); + + index->n_def++; + + field = dict_index_get_nth_field(index, index->n_def - 1); + + field->name = name; + field->prefix_len = (unsigned int) prefix_len; +} + +/************************************************************************** +Frees an index memory object. */ +UNIV_INTERN +void +dict_mem_index_free( +/*================*/ + dict_index_t* index) /* in: index */ +{ + ut_ad(index); + ut_ad(index->magic_n == DICT_INDEX_MAGIC_N); + + mem_heap_free(index->heap); +} === added directory 'storage/xtradb/dyn' === added file 'storage/xtradb/dyn/dyn0dyn.c' --- a/storage/xtradb/dyn/dyn0dyn.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/dyn/dyn0dyn.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,64 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +The dynamically allocated array + +Created 2/5/1996 Heikki Tuuri +*******************************************************/ + +#include "dyn0dyn.h" +#ifdef UNIV_NONINL +#include "dyn0dyn.ic" +#endif + +/**************************************************************** +Adds a new block to a dyn array. */ +UNIV_INTERN +dyn_block_t* +dyn_array_add_block( +/*================*/ + /* out: created block */ + dyn_array_t* arr) /* in: dyn array */ +{ + mem_heap_t* heap; + dyn_block_t* block; + + ut_ad(arr); + ut_ad(arr->magic_n == DYN_BLOCK_MAGIC_N); + + if (arr->heap == NULL) { + UT_LIST_INIT(arr->base); + UT_LIST_ADD_FIRST(list, arr->base, arr); + + arr->heap = mem_heap_create(sizeof(dyn_block_t)); + } + + block = dyn_array_get_last_block(arr); + block->used = block->used | DYN_BLOCK_FULL_FLAG; + + heap = arr->heap; + + block = mem_heap_alloc(heap, sizeof(dyn_block_t)); + + block->used = 0; + + UT_LIST_ADD_LAST(list, arr->base, block); + + return(block); +} === added directory 'storage/xtradb/eval' === added file 'storage/xtradb/eval/eval0eval.c' --- a/storage/xtradb/eval/eval0eval.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/eval/eval0eval.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,851 @@ +/***************************************************************************** + +Copyright (c) 1997, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +SQL evaluator: evaluates simple data structures, like expressions, in +a query graph + +Created 12/29/1997 Heikki Tuuri +*******************************************************/ + +#include "eval0eval.h" + +#ifdef UNIV_NONINL +#include "eval0eval.ic" +#endif + +#include "data0data.h" +#include "row0sel.h" + +/* The RND function seed */ +static ulint eval_rnd = 128367121; + +/* Dummy adress used when we should allocate a buffer of size 0 in +the function below */ + +static byte eval_dummy; + +/********************************************************************* +Allocate a buffer from global dynamic memory for a value of a que_node. +NOTE that this memory must be explicitly freed when the query graph is +freed. If the node already has an allocated buffer, that buffer is freed +here. NOTE that this is the only function where dynamic memory should be +allocated for a query node val field. */ +UNIV_INTERN +byte* +eval_node_alloc_val_buf( +/*====================*/ + /* out: pointer to allocated buffer */ + que_node_t* node, /* in: query graph node; sets the val field + data field to point to the new buffer, and + len field equal to size */ + ulint size) /* in: buffer size */ +{ + dfield_t* dfield; + byte* data; + + ut_ad(que_node_get_type(node) == QUE_NODE_SYMBOL + || que_node_get_type(node) == QUE_NODE_FUNC); + + dfield = que_node_get_val(node); + + data = dfield_get_data(dfield); + + if (data && data != &eval_dummy) { + mem_free(data); + } + + if (size == 0) { + data = &eval_dummy; + } else { + data = mem_alloc(size); + } + + que_node_set_val_buf_size(node, size); + + dfield_set_data(dfield, data, size); + + return(data); +} + +/********************************************************************* +Free the buffer from global dynamic memory for a value of a que_node, +if it has been allocated in the above function. The freeing for pushed +column values is done in sel_col_prefetch_buf_free. */ +UNIV_INTERN +void +eval_node_free_val_buf( +/*===================*/ + que_node_t* node) /* in: query graph node */ +{ + dfield_t* dfield; + byte* data; + + ut_ad(que_node_get_type(node) == QUE_NODE_SYMBOL + || que_node_get_type(node) == QUE_NODE_FUNC); + + dfield = que_node_get_val(node); + + data = dfield_get_data(dfield); + + if (que_node_get_val_buf_size(node) > 0) { + ut_a(data); + + mem_free(data); + } +} + +/********************************************************************* +Evaluates a comparison node. */ +UNIV_INTERN +ibool +eval_cmp( +/*=====*/ + /* out: the result of the comparison */ + func_node_t* cmp_node) /* in: comparison node */ +{ + que_node_t* arg1; + que_node_t* arg2; + int res; + ibool val; + int func; + + ut_ad(que_node_get_type(cmp_node) == QUE_NODE_FUNC); + + arg1 = cmp_node->args; + arg2 = que_node_get_next(arg1); + + res = cmp_dfield_dfield(que_node_get_val(arg1), + que_node_get_val(arg2)); + val = TRUE; + + func = cmp_node->func; + + if (func == '=') { + if (res != 0) { + val = FALSE; + } + } else if (func == '<') { + if (res != -1) { + val = FALSE; + } + } else if (func == PARS_LE_TOKEN) { + if (res == 1) { + val = FALSE; + } + } else if (func == PARS_NE_TOKEN) { + if (res == 0) { + val = FALSE; + } + } else if (func == PARS_GE_TOKEN) { + if (res == -1) { + val = FALSE; + } + } else { + ut_ad(func == '>'); + + if (res != 1) { + val = FALSE; + } + } + + eval_node_set_ibool_val(cmp_node, val); + + return(val); +} + +/********************************************************************* +Evaluates a logical operation node. */ +UNIV_INLINE +void +eval_logical( +/*=========*/ + func_node_t* logical_node) /* in: logical operation node */ +{ + que_node_t* arg1; + que_node_t* arg2; + ibool val1; + ibool val2 = 0; /* remove warning */ + ibool val = 0; /* remove warning */ + int func; + + ut_ad(que_node_get_type(logical_node) == QUE_NODE_FUNC); + + arg1 = logical_node->args; + arg2 = que_node_get_next(arg1); /* arg2 is NULL if func is 'NOT' */ + + val1 = eval_node_get_ibool_val(arg1); + + if (arg2) { + val2 = eval_node_get_ibool_val(arg2); + } + + func = logical_node->func; + + if (func == PARS_AND_TOKEN) { + val = val1 & val2; + } else if (func == PARS_OR_TOKEN) { + val = val1 | val2; + } else if (func == PARS_NOT_TOKEN) { + val = TRUE - val1; + } else { + ut_error; + } + + eval_node_set_ibool_val(logical_node, val); +} + +/********************************************************************* +Evaluates an arithmetic operation node. */ +UNIV_INLINE +void +eval_arith( +/*=======*/ + func_node_t* arith_node) /* in: arithmetic operation node */ +{ + que_node_t* arg1; + que_node_t* arg2; + lint val1; + lint val2 = 0; /* remove warning */ + lint val; + int func; + + ut_ad(que_node_get_type(arith_node) == QUE_NODE_FUNC); + + arg1 = arith_node->args; + arg2 = que_node_get_next(arg1); /* arg2 is NULL if func is unary '-' */ + + val1 = eval_node_get_int_val(arg1); + + if (arg2) { + val2 = eval_node_get_int_val(arg2); + } + + func = arith_node->func; + + if (func == '+') { + val = val1 + val2; + } else if ((func == '-') && arg2) { + val = val1 - val2; + } else if (func == '-') { + val = -val1; + } else if (func == '*') { + val = val1 * val2; + } else { + ut_ad(func == '/'); + val = val1 / val2; + } + + eval_node_set_int_val(arith_node, val); +} + +/********************************************************************* +Evaluates an aggregate operation node. */ +UNIV_INLINE +void +eval_aggregate( +/*===========*/ + func_node_t* node) /* in: aggregate operation node */ +{ + que_node_t* arg; + lint val; + lint arg_val; + int func; + + ut_ad(que_node_get_type(node) == QUE_NODE_FUNC); + + val = eval_node_get_int_val(node); + + func = node->func; + + if (func == PARS_COUNT_TOKEN) { + + val = val + 1; + } else { + ut_ad(func == PARS_SUM_TOKEN); + + arg = node->args; + arg_val = eval_node_get_int_val(arg); + + val = val + arg_val; + } + + eval_node_set_int_val(node, val); +} + +/********************************************************************* +Evaluates a predefined function node where the function is not relevant +in benchmarks. */ +static +void +eval_predefined_2( +/*==============*/ + func_node_t* func_node) /* in: predefined function node */ +{ + que_node_t* arg; + que_node_t* arg1; + que_node_t* arg2 = 0; /* remove warning (??? bug ???) */ + lint int_val; + byte* data; + ulint len1; + ulint len2; + int func; + ulint i; + + ut_ad(que_node_get_type(func_node) == QUE_NODE_FUNC); + + arg1 = func_node->args; + + if (arg1) { + arg2 = que_node_get_next(arg1); + } + + func = func_node->func; + + if (func == PARS_PRINTF_TOKEN) { + + arg = arg1; + + while (arg) { + dfield_print(que_node_get_val(arg)); + + arg = que_node_get_next(arg); + } + + putc('\n', stderr); + + } else if (func == PARS_ASSERT_TOKEN) { + + if (!eval_node_get_ibool_val(arg1)) { + fputs("SQL assertion fails in a stored procedure!\n", + stderr); + } + + ut_a(eval_node_get_ibool_val(arg1)); + + /* This function, or more precisely, a debug procedure, + returns no value */ + + } else if (func == PARS_RND_TOKEN) { + + len1 = (ulint)eval_node_get_int_val(arg1); + len2 = (ulint)eval_node_get_int_val(arg2); + + ut_ad(len2 >= len1); + + if (len2 > len1) { + int_val = (lint) (len1 + + (eval_rnd % (len2 - len1 + 1))); + } else { + int_val = (lint) len1; + } + + eval_rnd = ut_rnd_gen_next_ulint(eval_rnd); + + eval_node_set_int_val(func_node, int_val); + + } else if (func == PARS_RND_STR_TOKEN) { + + len1 = (ulint)eval_node_get_int_val(arg1); + + data = eval_node_ensure_val_buf(func_node, len1); + + for (i = 0; i < len1; i++) { + data[i] = (byte)(97 + (eval_rnd % 3)); + + eval_rnd = ut_rnd_gen_next_ulint(eval_rnd); + } + } else { + ut_error; + } +} + +/********************************************************************* +Evaluates a notfound-function node. */ +UNIV_INLINE +void +eval_notfound( +/*==========*/ + func_node_t* func_node) /* in: function node */ +{ + que_node_t* arg1; + que_node_t* arg2; + sym_node_t* cursor; + sel_node_t* sel_node; + ibool ibool_val; + + arg1 = func_node->args; + arg2 = que_node_get_next(arg1); + + ut_ad(func_node->func == PARS_NOTFOUND_TOKEN); + + cursor = arg1; + + ut_ad(que_node_get_type(cursor) == QUE_NODE_SYMBOL); + + if (cursor->token_type == SYM_LIT) { + + ut_ad(ut_memcmp(dfield_get_data(que_node_get_val(cursor)), + "SQL", 3) == 0); + + sel_node = cursor->sym_table->query_graph->last_sel_node; + } else { + sel_node = cursor->alias->cursor_def; + } + + if (sel_node->state == SEL_NODE_NO_MORE_ROWS) { + ibool_val = TRUE; + } else { + ibool_val = FALSE; + } + + eval_node_set_ibool_val(func_node, ibool_val); +} + +/********************************************************************* +Evaluates a substr-function node. */ +UNIV_INLINE +void +eval_substr( +/*========*/ + func_node_t* func_node) /* in: function node */ +{ + que_node_t* arg1; + que_node_t* arg2; + que_node_t* arg3; + dfield_t* dfield; + byte* str1; + ulint len1; + ulint len2; + + arg1 = func_node->args; + arg2 = que_node_get_next(arg1); + + ut_ad(func_node->func == PARS_SUBSTR_TOKEN); + + arg3 = que_node_get_next(arg2); + + str1 = dfield_get_data(que_node_get_val(arg1)); + + len1 = (ulint)eval_node_get_int_val(arg2); + len2 = (ulint)eval_node_get_int_val(arg3); + + dfield = que_node_get_val(func_node); + + dfield_set_data(dfield, str1 + len1, len2); +} + +/********************************************************************* +Evaluates a replstr-procedure node. */ +static +void +eval_replstr( +/*=========*/ + func_node_t* func_node) /* in: function node */ +{ + que_node_t* arg1; + que_node_t* arg2; + que_node_t* arg3; + que_node_t* arg4; + byte* str1; + byte* str2; + ulint len1; + ulint len2; + + arg1 = func_node->args; + arg2 = que_node_get_next(arg1); + + ut_ad(que_node_get_type(arg1) == QUE_NODE_SYMBOL); + + arg3 = que_node_get_next(arg2); + arg4 = que_node_get_next(arg3); + + str1 = dfield_get_data(que_node_get_val(arg1)); + str2 = dfield_get_data(que_node_get_val(arg2)); + + len1 = (ulint)eval_node_get_int_val(arg3); + len2 = (ulint)eval_node_get_int_val(arg4); + + if ((dfield_get_len(que_node_get_val(arg1)) < len1 + len2) + || (dfield_get_len(que_node_get_val(arg2)) < len2)) { + + ut_error; + } + + ut_memcpy(str1 + len1, str2, len2); +} + +/********************************************************************* +Evaluates an instr-function node. */ +static +void +eval_instr( +/*=======*/ + func_node_t* func_node) /* in: function node */ +{ + que_node_t* arg1; + que_node_t* arg2; + dfield_t* dfield1; + dfield_t* dfield2; + lint int_val; + byte* str1; + byte* str2; + byte match_char; + ulint len1; + ulint len2; + ulint i; + ulint j; + + arg1 = func_node->args; + arg2 = que_node_get_next(arg1); + + dfield1 = que_node_get_val(arg1); + dfield2 = que_node_get_val(arg2); + + str1 = dfield_get_data(dfield1); + str2 = dfield_get_data(dfield2); + + len1 = dfield_get_len(dfield1); + len2 = dfield_get_len(dfield2); + + if (len2 == 0) { + ut_error; + } + + match_char = str2[0]; + + for (i = 0; i < len1; i++) { + /* In this outer loop, the number of matched characters is 0 */ + + if (str1[i] == match_char) { + + if (i + len2 > len1) { + + break; + } + + for (j = 1;; j++) { + /* We have already matched j characters */ + + if (j == len2) { + int_val = i + 1; + + goto match_found; + } + + if (str1[i + j] != str2[j]) { + + break; + } + } + } + } + + int_val = 0; + +match_found: + eval_node_set_int_val(func_node, int_val); +} + +/********************************************************************* +Evaluates a predefined function node. */ +UNIV_INLINE +void +eval_binary_to_number( +/*==================*/ + func_node_t* func_node) /* in: function node */ +{ + que_node_t* arg1; + dfield_t* dfield; + byte* str1; + byte* str2; + ulint len1; + ulint int_val; + + arg1 = func_node->args; + + dfield = que_node_get_val(arg1); + + str1 = dfield_get_data(dfield); + len1 = dfield_get_len(dfield); + + if (len1 > 4) { + ut_error; + } + + if (len1 == 4) { + str2 = str1; + } else { + int_val = 0; + str2 = (byte*)&int_val; + + ut_memcpy(str2 + (4 - len1), str1, len1); + } + + eval_node_copy_and_alloc_val(func_node, str2, 4); +} + +/********************************************************************* +Evaluates a predefined function node. */ +static +void +eval_concat( +/*========*/ + func_node_t* func_node) /* in: function node */ +{ + que_node_t* arg; + dfield_t* dfield; + byte* data; + ulint len; + ulint len1; + + arg = func_node->args; + len = 0; + + while (arg) { + len1 = dfield_get_len(que_node_get_val(arg)); + + len += len1; + + arg = que_node_get_next(arg); + } + + data = eval_node_ensure_val_buf(func_node, len); + + arg = func_node->args; + len = 0; + + while (arg) { + dfield = que_node_get_val(arg); + len1 = dfield_get_len(dfield); + + ut_memcpy(data + len, dfield_get_data(dfield), len1); + + len += len1; + + arg = que_node_get_next(arg); + } +} + +/********************************************************************* +Evaluates a predefined function node. If the first argument is an integer, +this function looks at the second argument which is the integer length in +bytes, and converts the integer to a VARCHAR. +If the first argument is of some other type, this function converts it to +BINARY. */ +UNIV_INLINE +void +eval_to_binary( +/*===========*/ + func_node_t* func_node) /* in: function node */ +{ + que_node_t* arg1; + que_node_t* arg2; + dfield_t* dfield; + byte* str1; + ulint len; + ulint len1; + + arg1 = func_node->args; + + str1 = dfield_get_data(que_node_get_val(arg1)); + + if (dtype_get_mtype(que_node_get_data_type(arg1)) != DATA_INT) { + + len = dfield_get_len(que_node_get_val(arg1)); + + dfield = que_node_get_val(func_node); + + dfield_set_data(dfield, str1, len); + + return; + } + + arg2 = que_node_get_next(arg1); + + len1 = (ulint)eval_node_get_int_val(arg2); + + if (len1 > 4) { + + ut_error; + } + + dfield = que_node_get_val(func_node); + + dfield_set_data(dfield, str1 + (4 - len1), len1); +} + +/********************************************************************* +Evaluates a predefined function node. */ +UNIV_INLINE +void +eval_predefined( +/*============*/ + func_node_t* func_node) /* in: function node */ +{ + que_node_t* arg1; + lint int_val; + byte* data; + int func; + + func = func_node->func; + + arg1 = func_node->args; + + if (func == PARS_LENGTH_TOKEN) { + + int_val = (lint)dfield_get_len(que_node_get_val(arg1)); + + } else if (func == PARS_TO_CHAR_TOKEN) { + + /* Convert number to character string as a + signed decimal integer. */ + + ulint uint_val; + int int_len; + + int_val = eval_node_get_int_val(arg1); + + /* Determine the length of the string. */ + + if (int_val == 0) { + int_len = 1; /* the number 0 occupies 1 byte */ + } else { + int_len = 0; + if (int_val < 0) { + uint_val = ((ulint) -int_val - 1) + 1; + int_len++; /* reserve space for minus sign */ + } else { + uint_val = (ulint) int_val; + } + for (; uint_val > 0; int_len++) { + uint_val /= 10; + } + } + + /* allocate the string */ + data = eval_node_ensure_val_buf(func_node, int_len + 1); + + /* add terminating NUL character */ + data[int_len] = 0; + + /* convert the number */ + + if (int_val == 0) { + data[0] = '0'; + } else { + int tmp; + if (int_val < 0) { + data[0] = '-'; /* preceding minus sign */ + uint_val = ((ulint) -int_val - 1) + 1; + } else { + uint_val = (ulint) int_val; + } + for (tmp = int_len; uint_val > 0; uint_val /= 10) { + data[--tmp] = (byte) + ('0' + (byte)(uint_val % 10)); + } + } + + dfield_set_len(que_node_get_val(func_node), int_len); + + return; + + } else if (func == PARS_TO_NUMBER_TOKEN) { + + int_val = atoi((char*) + dfield_get_data(que_node_get_val(arg1))); + + } else if (func == PARS_SYSDATE_TOKEN) { + int_val = (lint)ut_time(); + } else { + eval_predefined_2(func_node); + + return; + } + + eval_node_set_int_val(func_node, int_val); +} + +/********************************************************************* +Evaluates a function node. */ +UNIV_INTERN +void +eval_func( +/*======*/ + func_node_t* func_node) /* in: function node */ +{ + que_node_t* arg; + ulint class; + ulint func; + + ut_ad(que_node_get_type(func_node) == QUE_NODE_FUNC); + + class = func_node->class; + func = func_node->func; + + arg = func_node->args; + + /* Evaluate first the argument list */ + while (arg) { + eval_exp(arg); + + /* The functions are not defined for SQL null argument + values, except for eval_cmp and notfound */ + + if (dfield_is_null(que_node_get_val(arg)) + && (class != PARS_FUNC_CMP) + && (func != PARS_NOTFOUND_TOKEN) + && (func != PARS_PRINTF_TOKEN)) { + ut_error; + } + + arg = que_node_get_next(arg); + } + + if (class == PARS_FUNC_CMP) { + eval_cmp(func_node); + } else if (class == PARS_FUNC_ARITH) { + eval_arith(func_node); + } else if (class == PARS_FUNC_AGGREGATE) { + eval_aggregate(func_node); + } else if (class == PARS_FUNC_PREDEFINED) { + + if (func == PARS_NOTFOUND_TOKEN) { + eval_notfound(func_node); + } else if (func == PARS_SUBSTR_TOKEN) { + eval_substr(func_node); + } else if (func == PARS_REPLSTR_TOKEN) { + eval_replstr(func_node); + } else if (func == PARS_INSTR_TOKEN) { + eval_instr(func_node); + } else if (func == PARS_BINARY_TO_NUMBER_TOKEN) { + eval_binary_to_number(func_node); + } else if (func == PARS_CONCAT_TOKEN) { + eval_concat(func_node); + } else if (func == PARS_TO_BINARY_TOKEN) { + eval_to_binary(func_node); + } else { + eval_predefined(func_node); + } + } else { + ut_ad(class == PARS_FUNC_LOGICAL); + + eval_logical(func_node); + } +} === added file 'storage/xtradb/eval/eval0proc.c' --- a/storage/xtradb/eval/eval0proc.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/eval/eval0proc.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,294 @@ +/***************************************************************************** + +Copyright (c) 1998, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Executes SQL stored procedures and their control structures + +Created 1/20/1998 Heikki Tuuri +*******************************************************/ + +#include "eval0proc.h" + +#ifdef UNIV_NONINL +#include "eval0proc.ic" +#endif + +/************************************************************************** +Performs an execution step of an if-statement node. */ +UNIV_INTERN +que_thr_t* +if_step( +/*====*/ + /* out: query thread to run next or NULL */ + que_thr_t* thr) /* in: query thread */ +{ + if_node_t* node; + elsif_node_t* elsif_node; + + ut_ad(thr); + + node = thr->run_node; + ut_ad(que_node_get_type(node) == QUE_NODE_IF); + + if (thr->prev_node == que_node_get_parent(node)) { + + /* Evaluate the condition */ + + eval_exp(node->cond); + + if (eval_node_get_ibool_val(node->cond)) { + + /* The condition evaluated to TRUE: start execution + from the first statement in the statement list */ + + thr->run_node = node->stat_list; + + } else if (node->else_part) { + thr->run_node = node->else_part; + + } else if (node->elsif_list) { + elsif_node = node->elsif_list; + + for (;;) { + eval_exp(elsif_node->cond); + + if (eval_node_get_ibool_val( + elsif_node->cond)) { + + /* The condition evaluated to TRUE: + start execution from the first + statement in the statement list */ + + thr->run_node = elsif_node->stat_list; + + break; + } + + elsif_node = que_node_get_next(elsif_node); + + if (elsif_node == NULL) { + thr->run_node = NULL; + + break; + } + } + } else { + thr->run_node = NULL; + } + } else { + /* Move to the next statement */ + ut_ad(que_node_get_next(thr->prev_node) == NULL); + + thr->run_node = NULL; + } + + if (thr->run_node == NULL) { + thr->run_node = que_node_get_parent(node); + } + + return(thr); +} + +/************************************************************************** +Performs an execution step of a while-statement node. */ +UNIV_INTERN +que_thr_t* +while_step( +/*=======*/ + /* out: query thread to run next or NULL */ + que_thr_t* thr) /* in: query thread */ +{ + while_node_t* node; + + ut_ad(thr); + + node = thr->run_node; + ut_ad(que_node_get_type(node) == QUE_NODE_WHILE); + + ut_ad((thr->prev_node == que_node_get_parent(node)) + || (que_node_get_next(thr->prev_node) == NULL)); + + /* Evaluate the condition */ + + eval_exp(node->cond); + + if (eval_node_get_ibool_val(node->cond)) { + + /* The condition evaluated to TRUE: start execution + from the first statement in the statement list */ + + thr->run_node = node->stat_list; + } else { + thr->run_node = que_node_get_parent(node); + } + + return(thr); +} + +/************************************************************************** +Performs an execution step of an assignment statement node. */ +UNIV_INTERN +que_thr_t* +assign_step( +/*========*/ + /* out: query thread to run next or NULL */ + que_thr_t* thr) /* in: query thread */ +{ + assign_node_t* node; + + ut_ad(thr); + + node = thr->run_node; + ut_ad(que_node_get_type(node) == QUE_NODE_ASSIGNMENT); + + /* Evaluate the value to assign */ + + eval_exp(node->val); + + eval_node_copy_val(node->var->alias, node->val); + + thr->run_node = que_node_get_parent(node); + + return(thr); +} + +/************************************************************************** +Performs an execution step of a for-loop node. */ +UNIV_INTERN +que_thr_t* +for_step( +/*=====*/ + /* out: query thread to run next or NULL */ + que_thr_t* thr) /* in: query thread */ +{ + for_node_t* node; + que_node_t* parent; + lint loop_var_value; + + ut_ad(thr); + + node = thr->run_node; + + ut_ad(que_node_get_type(node) == QUE_NODE_FOR); + + parent = que_node_get_parent(node); + + if (thr->prev_node != parent) { + + /* Move to the next statement */ + thr->run_node = que_node_get_next(thr->prev_node); + + if (thr->run_node != NULL) { + + return(thr); + } + + /* Increment the value of loop_var */ + + loop_var_value = 1 + eval_node_get_int_val(node->loop_var); + } else { + /* Initialize the loop */ + + eval_exp(node->loop_start_limit); + eval_exp(node->loop_end_limit); + + loop_var_value = eval_node_get_int_val(node->loop_start_limit); + + node->loop_end_value + = (int) eval_node_get_int_val(node->loop_end_limit); + } + + /* Check if we should do another loop */ + + if (loop_var_value > node->loop_end_value) { + + /* Enough loops done */ + + thr->run_node = parent; + } else { + eval_node_set_int_val(node->loop_var, loop_var_value); + + thr->run_node = node->stat_list; + } + + return(thr); +} + +/************************************************************************** +Performs an execution step of an exit statement node. */ +UNIV_INTERN +que_thr_t* +exit_step( +/*======*/ + /* out: query thread to run next or NULL */ + que_thr_t* thr) /* in: query thread */ +{ + exit_node_t* node; + que_node_t* loop_node; + + ut_ad(thr); + + node = thr->run_node; + + ut_ad(que_node_get_type(node) == QUE_NODE_EXIT); + + /* Loops exit by setting thr->run_node as the loop node's parent, so + find our containing loop node and get its parent. */ + + loop_node = que_node_get_containing_loop_node(node); + + /* If someone uses an EXIT statement outside of a loop, this will + trigger. */ + ut_a(loop_node); + + thr->run_node = que_node_get_parent(loop_node); + + return(thr); +} + +/************************************************************************** +Performs an execution step of a return-statement node. */ +UNIV_INTERN +que_thr_t* +return_step( +/*========*/ + /* out: query thread to run next or NULL */ + que_thr_t* thr) /* in: query thread */ +{ + return_node_t* node; + que_node_t* parent; + + ut_ad(thr); + + node = thr->run_node; + + ut_ad(que_node_get_type(node) == QUE_NODE_RETURN); + + parent = node; + + while (que_node_get_type(parent) != QUE_NODE_PROC) { + + parent = que_node_get_parent(parent); + } + + ut_a(parent); + + thr->run_node = que_node_get_parent(parent); + + return(thr); +} === added directory 'storage/xtradb/fil' === added file 'storage/xtradb/fil/fil0fil.c' --- a/storage/xtradb/fil/fil0fil.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/fil/fil0fil.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,4817 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +The tablespace memory cache + +Created 10/25/1995 Heikki Tuuri +*******************************************************/ + +#include "fil0fil.h" + +#include "mem0mem.h" +#include "sync0sync.h" +#include "hash0hash.h" +#include "os0file.h" +#include "os0sync.h" +#include "mach0data.h" +#include "ibuf0ibuf.h" +#include "buf0buf.h" +#include "buf0flu.h" +#include "buf0lru.h" +#include "log0recv.h" +#include "fsp0fsp.h" +#include "srv0srv.h" +#include "srv0start.h" +#include "mtr0mtr.h" +#include "mtr0log.h" +#include "dict0dict.h" +#include "page0zip.h" + + +/* + IMPLEMENTATION OF THE TABLESPACE MEMORY CACHE + ============================================= + +The tablespace cache is responsible for providing fast read/write access to +tablespaces and logs of the database. File creation and deletion is done +in other modules which know more of the logic of the operation, however. + +A tablespace consists of a chain of files. The size of the files does not +have to be divisible by the database block size, because we may just leave +the last incomplete block unused. When a new file is appended to the +tablespace, the maximum size of the file is also specified. At the moment, +we think that it is best to extend the file to its maximum size already at +the creation of the file, because then we can avoid dynamically extending +the file when more space is needed for the tablespace. + +A block's position in the tablespace is specified with a 32-bit unsigned +integer. The files in the chain are thought to be catenated, and the block +corresponding to an address n is the nth block in the catenated file (where +the first block is named the 0th block, and the incomplete block fragments +at the end of files are not taken into account). A tablespace can be extended +by appending a new file at the end of the chain. + +Our tablespace concept is similar to the one of Oracle. + +To acquire more speed in disk transfers, a technique called disk striping is +sometimes used. This means that logical block addresses are divided in a +round-robin fashion across several disks. Windows NT supports disk striping, +so there we do not need to support it in the database. Disk striping is +implemented in hardware in RAID disks. We conclude that it is not necessary +to implement it in the database. Oracle 7 does not support disk striping, +either. + +Another trick used at some database sites is replacing tablespace files by +raw disks, that is, the whole physical disk drive, or a partition of it, is +opened as a single file, and it is accessed through byte offsets calculated +from the start of the disk or the partition. This is recommended in some +books on database tuning to achieve more speed in i/o. Using raw disk +certainly prevents the OS from fragmenting disk space, but it is not clear +if it really adds speed. We measured on the Pentium 100 MHz + NT + NTFS file +system + EIDE Conner disk only a negligible difference in speed when reading +from a file, versus reading from a raw disk. + +To have fast access to a tablespace or a log file, we put the data structures +to a hash table. Each tablespace and log file is given an unique 32-bit +identifier. + +Some operating systems do not support many open files at the same time, +though NT seems to tolerate at least 900 open files. Therefore, we put the +open files in an LRU-list. If we need to open another file, we may close the +file at the end of the LRU-list. When an i/o-operation is pending on a file, +the file cannot be closed. We take the file nodes with pending i/o-operations +out of the LRU-list and keep a count of pending operations. When an operation +completes, we decrement the count and return the file node to the LRU-list if +the count drops to zero. */ + +/* When mysqld is run, the default directory "." is the mysqld datadir, +but in the MySQL Embedded Server Library and ibbackup it is not the default +directory, and we must set the base file path explicitly */ +UNIV_INTERN const char* fil_path_to_mysql_datadir = "."; + +/* The number of fsyncs done to the log */ +UNIV_INTERN ulint fil_n_log_flushes = 0; + +UNIV_INTERN ulint fil_n_pending_log_flushes = 0; +UNIV_INTERN ulint fil_n_pending_tablespace_flushes = 0; + +/* Null file address */ +UNIV_INTERN fil_addr_t fil_addr_null = {FIL_NULL, 0}; + +/* File node of a tablespace or the log data space */ +struct fil_node_struct { + fil_space_t* space; /* backpointer to the space where this node + belongs */ + char* name; /* path to the file */ + ibool open; /* TRUE if file open */ + os_file_t handle; /* OS handle to the file, if file open */ + ibool is_raw_disk;/* TRUE if the 'file' is actually a raw + device or a raw disk partition */ + ulint size; /* size of the file in database pages, 0 if + not known yet; the possible last incomplete + megabyte may be ignored if space == 0 */ + ulint n_pending; + /* count of pending i/o's on this file; + closing of the file is not allowed if + this is > 0 */ + ulint n_pending_flushes; + /* count of pending flushes on this file; + closing of the file is not allowed if + this is > 0 */ + ib_int64_t modification_counter;/* when we write to the file we + increment this by one */ + ib_int64_t flush_counter;/* up to what modification_counter value + we have flushed the modifications to disk */ + UT_LIST_NODE_T(fil_node_t) chain; + /* link field for the file chain */ + UT_LIST_NODE_T(fil_node_t) LRU; + /* link field for the LRU list */ + ulint magic_n; +}; + +#define FIL_NODE_MAGIC_N 89389 + +/* Tablespace or log data space: let us call them by a common name space */ +struct fil_space_struct { + char* name; /* space name = the path to the first file in + it */ + ulint id; /* space id */ + ib_int64_t tablespace_version; + /* in DISCARD/IMPORT this timestamp is used to + check if we should ignore an insert buffer + merge request for a page because it actually + was for the previous incarnation of the + space */ + ibool mark; /* this is set to TRUE at database startup if + the space corresponds to a table in the InnoDB + data dictionary; so we can print a warning of + orphaned tablespaces */ + ibool stop_ios;/* TRUE if we want to rename the .ibd file of + tablespace and want to stop temporarily + posting of new i/o requests on the file */ + ibool stop_ibuf_merges; + /* we set this TRUE when we start deleting a + single-table tablespace */ + ibool is_being_deleted; + /* this is set to TRUE when we start + deleting a single-table tablespace and its + file; when this flag is set no further i/o + or flush requests can be placed on this space, + though there may be such requests still being + processed on this space */ + ulint purpose;/* FIL_TABLESPACE, FIL_LOG, or FIL_ARCH_LOG */ + UT_LIST_BASE_NODE_T(fil_node_t) chain; + /* base node for the file chain */ + ulint size; /* space size in pages; 0 if a single-table + tablespace whose size we do not know yet; + last incomplete megabytes in data files may be + ignored if space == 0 */ + ulint flags; /* in: compressed page size + and file format, or 0 */ + ulint n_reserved_extents; + /* number of reserved free extents for + ongoing operations like B-tree page split */ + ulint n_pending_flushes; /* this is > 0 when flushing + the tablespace to disk; dropping of the + tablespace is forbidden if this is > 0 */ + ulint n_pending_ibuf_merges;/* this is > 0 when merging + insert buffer entries to a page so that we + may need to access the ibuf bitmap page in the + tablespade: dropping of the tablespace is + forbidden if this is > 0 */ + hash_node_t hash; /* hash chain node */ + hash_node_t name_hash;/* hash chain the name_hash table */ + rw_lock_t latch; /* latch protecting the file space storage + allocation */ + UT_LIST_NODE_T(fil_space_t) unflushed_spaces; + /* list of spaces with at least one unflushed + file we have written to */ + ibool is_in_unflushed_spaces; /* TRUE if this space is + currently in the list above */ + UT_LIST_NODE_T(fil_space_t) space_list; + /* list of all spaces */ + ulint magic_n; +}; + +#define FIL_SPACE_MAGIC_N 89472 + +/* The tablespace memory cache; also the totality of logs = the log data space, +is stored here; below we talk about tablespaces, but also the ib_logfiles +form a 'space' and it is handled here */ + +typedef struct fil_system_struct fil_system_t; +struct fil_system_struct { + mutex_t mutex; /* The mutex protecting the cache */ + hash_table_t* spaces; /* The hash table of spaces in the + system; they are hashed on the space + id */ + hash_table_t* name_hash; /* hash table based on the space + name */ + UT_LIST_BASE_NODE_T(fil_node_t) LRU; + /* base node for the LRU list of the + most recently used open files with no + pending i/o's; if we start an i/o on + the file, we first remove it from this + list, and return it to the start of + the list when the i/o ends; + log files and the system tablespace are + not put to this list: they are opened + after the startup, and kept open until + shutdown */ + UT_LIST_BASE_NODE_T(fil_space_t) unflushed_spaces; + /* base node for the list of those + tablespaces whose files contain + unflushed writes; those spaces have + at least one file node where + modification_counter > flush_counter */ + ulint n_open; /* number of files currently open */ + ulint max_n_open; /* n_open is not allowed to exceed + this */ + ib_int64_t modification_counter;/* when we write to a file we + increment this by one */ + ulint max_assigned_id;/* maximum space id in the existing + tables, or assigned during the time + mysqld has been up; at an InnoDB + startup we scan the data dictionary + and set here the maximum of the + space id's of the tables there */ + ib_int64_t tablespace_version; + /* a counter which is incremented for + every space object memory creation; + every space mem object gets a + 'timestamp' from this; in DISCARD/ + IMPORT this is used to check if we + should ignore an insert buffer merge + request */ + UT_LIST_BASE_NODE_T(fil_space_t) space_list; + /* list of all file spaces */ +}; + +/* The tablespace memory cache. This variable is NULL before the module is +initialized. */ +UNIV_INTERN fil_system_t* fil_system = NULL; + + +/************************************************************************ +NOTE: you must call fil_mutex_enter_and_prepare_for_io() first! + +Prepares a file node for i/o. Opens the file if it is closed. Updates the +pending i/o's field in the node and the system appropriately. Takes the node +off the LRU list if it is in the LRU list. The caller must hold the fil_sys +mutex. */ +static +void +fil_node_prepare_for_io( +/*====================*/ + fil_node_t* node, /* in: file node */ + fil_system_t* system, /* in: tablespace memory cache */ + fil_space_t* space); /* in: space */ +/************************************************************************ +Updates the data structures when an i/o operation finishes. Updates the +pending i/o's field in the node appropriately. */ +static +void +fil_node_complete_io( +/*=================*/ + fil_node_t* node, /* in: file node */ + fil_system_t* system, /* in: tablespace memory cache */ + ulint type); /* in: OS_FILE_WRITE or OS_FILE_READ; marks + the node as modified if + type == OS_FILE_WRITE */ +/*********************************************************************** +Checks if a single-table tablespace for a given table name exists in the +tablespace memory cache. */ +static +ulint +fil_get_space_id_for_table( +/*=======================*/ + /* out: space id, ULINT_UNDEFINED if not + found */ + const char* name); /* in: table name in the standard + 'databasename/tablename' format */ +/************************************************************************ +Reads data from a space to a buffer. Remember that the possible incomplete +blocks at the end of file are ignored: they are not taken into account when +calculating the byte offset within a space. */ +UNIV_INLINE +ulint +fil_read( +/*=====*/ + /* out: DB_SUCCESS, or DB_TABLESPACE_DELETED + if we are trying to do i/o on a tablespace + which does not exist */ + ibool sync, /* in: TRUE if synchronous aio is desired */ + ulint space_id, /* in: space id */ + ulint zip_size, /* in: compressed page size in bytes; + 0 for uncompressed pages */ + ulint block_offset, /* in: offset in number of blocks */ + ulint byte_offset, /* in: remainder of offset in bytes; in aio + this must be divisible by the OS block size */ + ulint len, /* in: how many bytes to read; this must not + cross a file boundary; in aio this must be a + block size multiple */ + void* buf, /* in/out: buffer where to store data read; + in aio this must be appropriately aligned */ + void* message) /* in: message for aio handler if non-sync + aio used, else ignored */ +{ + return(fil_io(OS_FILE_READ, sync, space_id, zip_size, block_offset, + byte_offset, len, buf, message)); +} + +/************************************************************************ +Writes data to a space from a buffer. Remember that the possible incomplete +blocks at the end of file are ignored: they are not taken into account when +calculating the byte offset within a space. */ +UNIV_INLINE +ulint +fil_write( +/*======*/ + /* out: DB_SUCCESS, or DB_TABLESPACE_DELETED + if we are trying to do i/o on a tablespace + which does not exist */ + ibool sync, /* in: TRUE if synchronous aio is desired */ + ulint space_id, /* in: space id */ + ulint zip_size, /* in: compressed page size in bytes; + 0 for uncompressed pages */ + ulint block_offset, /* in: offset in number of blocks */ + ulint byte_offset, /* in: remainder of offset in bytes; in aio + this must be divisible by the OS block size */ + ulint len, /* in: how many bytes to write; this must + not cross a file boundary; in aio this must + be a block size multiple */ + void* buf, /* in: buffer from which to write; in aio + this must be appropriately aligned */ + void* message) /* in: message for aio handler if non-sync + aio used, else ignored */ +{ + return(fil_io(OS_FILE_WRITE, sync, space_id, zip_size, block_offset, + byte_offset, len, buf, message)); +} + +/*********************************************************************** +Returns the table space by a given id, NULL if not found. */ +UNIV_INLINE +fil_space_t* +fil_space_get_by_id( +/*================*/ + ulint id) /* in: space id */ +{ + fil_space_t* space; + + ut_ad(mutex_own(&fil_system->mutex)); + + HASH_SEARCH(hash, fil_system->spaces, id, + fil_space_t*, space, + ut_ad(space->magic_n == FIL_SPACE_MAGIC_N), + space->id == id); + + return(space); +} + +/*********************************************************************** +Returns the table space by a given name, NULL if not found. */ +UNIV_INLINE +fil_space_t* +fil_space_get_by_name( +/*==================*/ + const char* name) /* in: space name */ +{ + fil_space_t* space; + ulint fold; + + ut_ad(mutex_own(&fil_system->mutex)); + + fold = ut_fold_string(name); + + HASH_SEARCH(name_hash, fil_system->name_hash, fold, + fil_space_t*, space, + ut_ad(space->magic_n == FIL_SPACE_MAGIC_N), + !strcmp(name, space->name)); + + return(space); +} + +/*********************************************************************** +Returns the version number of a tablespace, -1 if not found. */ +UNIV_INTERN +ib_int64_t +fil_space_get_version( +/*==================*/ + /* out: version number, -1 if the tablespace does not + exist in the memory cache */ + ulint id) /* in: space id */ +{ + fil_system_t* system = fil_system; + fil_space_t* space; + ib_int64_t version = -1; + + ut_ad(system); + + mutex_enter(&(system->mutex)); + + space = fil_space_get_by_id(id); + + if (space) { + version = space->tablespace_version; + } + + mutex_exit(&(system->mutex)); + + return(version); +} + +/*********************************************************************** +Returns the latch of a file space. */ +UNIV_INTERN +rw_lock_t* +fil_space_get_latch( +/*================*/ + /* out: latch protecting storage allocation */ + ulint id, /* in: space id */ + ulint* flags) /* out: tablespace flags */ +{ + fil_system_t* system = fil_system; + fil_space_t* space; + + ut_ad(system); + + mutex_enter(&(system->mutex)); + + space = fil_space_get_by_id(id); + + ut_a(space); + + if (flags) { + *flags = space->flags; + } + + mutex_exit(&(system->mutex)); + + return(&(space->latch)); +} + +/*********************************************************************** +Returns the type of a file space. */ +UNIV_INTERN +ulint +fil_space_get_type( +/*===============*/ + /* out: FIL_TABLESPACE or FIL_LOG */ + ulint id) /* in: space id */ +{ + fil_system_t* system = fil_system; + fil_space_t* space; + + ut_ad(system); + + mutex_enter(&(system->mutex)); + + space = fil_space_get_by_id(id); + + ut_a(space); + + mutex_exit(&(system->mutex)); + + return(space->purpose); +} + +/************************************************************************** +Checks if all the file nodes in a space are flushed. The caller must hold +the fil_system mutex. */ +static +ibool +fil_space_is_flushed( +/*=================*/ + /* out: TRUE if all are flushed */ + fil_space_t* space) /* in: space */ +{ + fil_node_t* node; + + ut_ad(mutex_own(&(fil_system->mutex))); + + node = UT_LIST_GET_FIRST(space->chain); + + while (node) { + if (node->modification_counter > node->flush_counter) { + + return(FALSE); + } + + node = UT_LIST_GET_NEXT(chain, node); + } + + return(TRUE); +} + +/*********************************************************************** +Appends a new file to the chain of files of a space. File must be closed. */ +UNIV_INTERN +void +fil_node_create( +/*============*/ + const char* name, /* in: file name (file must be closed) */ + ulint size, /* in: file size in database blocks, rounded + downwards to an integer */ + ulint id, /* in: space id where to append */ + ibool is_raw) /* in: TRUE if a raw device or + a raw disk partition */ +{ + fil_system_t* system = fil_system; + fil_node_t* node; + fil_space_t* space; + + ut_a(system); + ut_a(name); + + mutex_enter(&(system->mutex)); + + node = mem_alloc(sizeof(fil_node_t)); + + node->name = mem_strdup(name); + node->open = FALSE; + + ut_a(!is_raw || srv_start_raw_disk_in_use); + + node->is_raw_disk = is_raw; + node->size = size; + node->magic_n = FIL_NODE_MAGIC_N; + node->n_pending = 0; + node->n_pending_flushes = 0; + + node->modification_counter = 0; + node->flush_counter = 0; + + space = fil_space_get_by_id(id); + + if (!space) { + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: Error: Could not find tablespace %lu for\n" + "InnoDB: file ", (ulong) id); + ut_print_filename(stderr, name); + fputs(" in the tablespace memory cache.\n", stderr); + mem_free(node->name); + + mem_free(node); + + mutex_exit(&(system->mutex)); + + return; + } + + space->size += size; + + node->space = space; + + UT_LIST_ADD_LAST(chain, space->chain, node); + + mutex_exit(&(system->mutex)); +} + +/************************************************************************ +Opens a the file of a node of a tablespace. The caller must own the fil_system +mutex. */ +static +void +fil_node_open_file( +/*===============*/ + fil_node_t* node, /* in: file node */ + fil_system_t* system, /* in: tablespace memory cache */ + fil_space_t* space) /* in: space */ +{ + ib_int64_t size_bytes; + ulint size_low; + ulint size_high; + ibool ret; + ibool success; +#ifndef UNIV_HOTBACKUP + byte* buf2; + byte* page; + ulint space_id; + ulint flags; +#endif /* !UNIV_HOTBACKUP */ + + ut_ad(mutex_own(&(system->mutex))); + ut_a(node->n_pending == 0); + ut_a(node->open == FALSE); + + if (node->size == 0) { + /* It must be a single-table tablespace and we do not know the + size of the file yet. First we open the file in the normal + mode, no async I/O here, for simplicity. Then do some checks, + and close the file again. + NOTE that we could not use the simple file read function + os_file_read() in Windows to read from a file opened for + async I/O! */ + + node->handle = os_file_create_simple_no_error_handling( + node->name, OS_FILE_OPEN, OS_FILE_READ_ONLY, &success); + if (!success) { + /* The following call prints an error message */ + os_file_get_last_error(TRUE); + + ut_print_timestamp(stderr); + + fprintf(stderr, + " InnoDB: Fatal error: cannot open %s\n." + "InnoDB: Have you deleted .ibd files" + " under a running mysqld server?\n", + node->name); + ut_a(0); + } + + os_file_get_size(node->handle, &size_low, &size_high); + + size_bytes = (((ib_int64_t)size_high) << 32) + + (ib_int64_t)size_low; +#ifdef UNIV_HOTBACKUP + node->size = (ulint) (size_bytes / UNIV_PAGE_SIZE); + /* TODO: adjust to zip_size, like below? */ +#else + ut_a(space->purpose != FIL_LOG); + ut_a(space->id != 0); + + if (size_bytes < FIL_IBD_FILE_INITIAL_SIZE * UNIV_PAGE_SIZE) { + fprintf(stderr, + "InnoDB: Error: the size of single-table" + " tablespace file %s\n" + "InnoDB: is only %lu %lu," + " should be at least %lu!\n", + node->name, + (ulong) size_high, + (ulong) size_low, + (ulong) (FIL_IBD_FILE_INITIAL_SIZE + * UNIV_PAGE_SIZE)); + + ut_a(0); + } + + /* Read the first page of the tablespace */ + + buf2 = ut_malloc(2 * UNIV_PAGE_SIZE); + /* Align the memory for file i/o if we might have O_DIRECT + set */ + page = ut_align(buf2, UNIV_PAGE_SIZE); + + success = os_file_read(node->handle, page, 0, 0, + UNIV_PAGE_SIZE); + space_id = fsp_header_get_space_id(page); + flags = fsp_header_get_flags(page); + + ut_free(buf2); + + /* Close the file now that we have read the space id from it */ + + os_file_close(node->handle); + + if (UNIV_UNLIKELY(space_id != space->id)) { + fprintf(stderr, + "InnoDB: Error: tablespace id is %lu" + " in the data dictionary\n" + "InnoDB: but in file %s it is %lu!\n", + space->id, node->name, space_id); + + ut_error; + } + + if (UNIV_UNLIKELY(space_id == ULINT_UNDEFINED + || space_id == 0)) { + fprintf(stderr, + "InnoDB: Error: tablespace id %lu" + " in file %s is not sensible\n", + (ulong) space_id, node->name); + + ut_error; + } + + if (UNIV_UNLIKELY(space->flags != flags)) { + fprintf(stderr, + "InnoDB: Error: table flags are %lx" + " in the data dictionary\n" + "InnoDB: but the flags in file %s are %lx!\n", + space->flags, node->name, flags); + + ut_error; + } + + if (size_bytes >= 1024 * 1024) { + /* Truncate the size to whole megabytes. */ + size_bytes = ut_2pow_round(size_bytes, 1024 * 1024); + } + + if (!(flags & DICT_TF_ZSSIZE_MASK)) { + node->size = (ulint) (size_bytes / UNIV_PAGE_SIZE); + } else { + node->size = (ulint) + (size_bytes + / dict_table_flags_to_zip_size(flags)); + } +#endif + space->size += node->size; + } + + /* printf("Opening file %s\n", node->name); */ + + /* Open the file for reading and writing, in Windows normally in the + unbuffered async I/O mode, though global variables may make + os_file_create() to fall back to the normal file I/O mode. */ + + if (space->purpose == FIL_LOG) { + node->handle = os_file_create(node->name, OS_FILE_OPEN, + OS_FILE_AIO, OS_LOG_FILE, &ret); + } else if (node->is_raw_disk) { + node->handle = os_file_create(node->name, + OS_FILE_OPEN_RAW, + OS_FILE_AIO, OS_DATA_FILE, &ret); + } else { + node->handle = os_file_create(node->name, OS_FILE_OPEN, + OS_FILE_AIO, OS_DATA_FILE, &ret); + } + + ut_a(ret); + + node->open = TRUE; + + system->n_open++; + + if (space->purpose == FIL_TABLESPACE && space->id != 0) { + /* Put the node to the LRU list */ + UT_LIST_ADD_FIRST(LRU, system->LRU, node); + } +} + +/************************************************************************** +Closes a file. */ +static +void +fil_node_close_file( +/*================*/ + fil_node_t* node, /* in: file node */ + fil_system_t* system) /* in: tablespace memory cache */ +{ + ibool ret; + + ut_ad(node && system); + ut_ad(mutex_own(&(system->mutex))); + ut_a(node->open); + ut_a(node->n_pending == 0); + ut_a(node->n_pending_flushes == 0); + ut_a(node->modification_counter == node->flush_counter); + + ret = os_file_close(node->handle); + ut_a(ret); + + /* printf("Closing file %s\n", node->name); */ + + node->open = FALSE; + ut_a(system->n_open > 0); + system->n_open--; + + if (node->space->purpose == FIL_TABLESPACE && node->space->id != 0) { + ut_a(UT_LIST_GET_LEN(system->LRU) > 0); + + /* The node is in the LRU list, remove it */ + UT_LIST_REMOVE(LRU, system->LRU, node); + } +} + +/************************************************************************ +Tries to close a file in the LRU list. The caller must hold the fil_sys +mutex. */ +static +ibool +fil_try_to_close_file_in_LRU( +/*=========================*/ + /* out: TRUE if success, FALSE if should retry + later; since i/o's generally complete in < + 100 ms, and as InnoDB writes at most 128 pages + from the buffer pool in a batch, and then + immediately flushes the files, there is a good + chance that the next time we find a suitable + node from the LRU list */ + ibool print_info) /* in: if TRUE, prints information why it + cannot close a file */ +{ + fil_system_t* system = fil_system; + fil_node_t* node; + + ut_ad(mutex_own(&(system->mutex))); + + node = UT_LIST_GET_LAST(system->LRU); + + if (print_info) { + fprintf(stderr, + "InnoDB: fil_sys open file LRU len %lu\n", + (ulong) UT_LIST_GET_LEN(system->LRU)); + } + + while (node != NULL) { + if (node->modification_counter == node->flush_counter + && node->n_pending_flushes == 0) { + + fil_node_close_file(node, system); + + return(TRUE); + } + + if (print_info && node->n_pending_flushes > 0) { + fputs("InnoDB: cannot close file ", stderr); + ut_print_filename(stderr, node->name); + fprintf(stderr, ", because n_pending_flushes %lu\n", + (ulong) node->n_pending_flushes); + } + + if (print_info + && node->modification_counter != node->flush_counter) { + fputs("InnoDB: cannot close file ", stderr); + ut_print_filename(stderr, node->name); + fprintf(stderr, + ", because mod_count %ld != fl_count %ld\n", + (long) node->modification_counter, + (long) node->flush_counter); + } + + node = UT_LIST_GET_PREV(LRU, node); + } + + return(FALSE); +} + +/*********************************************************************** +Reserves the fil_system mutex and tries to make sure we can open at least one +file while holding it. This should be called before calling +fil_node_prepare_for_io(), because that function may need to open a file. */ +static +void +fil_mutex_enter_and_prepare_for_io( +/*===============================*/ + ulint space_id) /* in: space id */ +{ + fil_system_t* system = fil_system; + fil_space_t* space; + ibool success; + ibool print_info = FALSE; + ulint count = 0; + ulint count2 = 0; + + ut_ad(!mutex_own(&(system->mutex))); +retry: + mutex_enter(&(system->mutex)); + + if (space_id == 0 || space_id >= SRV_LOG_SPACE_FIRST_ID) { + /* We keep log files and system tablespace files always open; + this is important in preventing deadlocks in this module, as + a page read completion often performs another read from the + insert buffer. The insert buffer is in tablespace 0, and we + cannot end up waiting in this function. */ + + return; + } + + if (system->n_open < system->max_n_open) { + + return; + } + + space = fil_space_get_by_id(space_id); + + if (space != NULL && space->stop_ios) { + /* We are going to do a rename file and want to stop new i/o's + for a while */ + + if (count2 > 20000) { + fputs("InnoDB: Warning: tablespace ", stderr); + ut_print_filename(stderr, space->name); + fprintf(stderr, + " has i/o ops stopped for a long time %lu\n", + (ulong) count2); + } + + mutex_exit(&(system->mutex)); + + os_thread_sleep(20000); + + count2++; + + goto retry; + } + + /* If the file is already open, no need to do anything; if the space + does not exist, we handle the situation in the function which called + this function */ + + if (!space || UT_LIST_GET_FIRST(space->chain)->open) { + + return; + } + + if (count > 1) { + print_info = TRUE; + } + + /* Too many files are open, try to close some */ +close_more: + success = fil_try_to_close_file_in_LRU(print_info); + + if (success && system->n_open >= system->max_n_open) { + + goto close_more; + } + + if (system->n_open < system->max_n_open) { + /* Ok */ + + return; + } + + if (count >= 2) { + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: Warning: too many (%lu) files stay open" + " while the maximum\n" + "InnoDB: allowed value would be %lu.\n" + "InnoDB: You may need to raise the value of" + " innodb_max_files_open in\n" + "InnoDB: my.cnf.\n", + (ulong) system->n_open, (ulong) system->max_n_open); + + return; + } + + mutex_exit(&(system->mutex)); + +#ifndef UNIV_HOTBACKUP + /* Wake the i/o-handler threads to make sure pending i/o's are + performed */ + os_aio_simulated_wake_handler_threads(); + + os_thread_sleep(20000); +#endif + /* Flush tablespaces so that we can close modified files in the LRU + list */ + + fil_flush_file_spaces(FIL_TABLESPACE); + + count++; + + goto retry; +} + +/*********************************************************************** +Frees a file node object from a tablespace memory cache. */ +static +void +fil_node_free( +/*==========*/ + fil_node_t* node, /* in, own: file node */ + fil_system_t* system, /* in: tablespace memory cache */ + fil_space_t* space) /* in: space where the file node is chained */ +{ + ut_ad(node && system && space); + ut_ad(mutex_own(&(system->mutex))); + ut_a(node->magic_n == FIL_NODE_MAGIC_N); + ut_a(node->n_pending == 0); + + if (node->open) { + /* We fool the assertion in fil_node_close_file() to think + there are no unflushed modifications in the file */ + + node->modification_counter = node->flush_counter; + + if (space->is_in_unflushed_spaces + && fil_space_is_flushed(space)) { + + space->is_in_unflushed_spaces = FALSE; + + UT_LIST_REMOVE(unflushed_spaces, + system->unflushed_spaces, + space); + } + + fil_node_close_file(node, system); + } + + space->size -= node->size; + + UT_LIST_REMOVE(chain, space->chain, node); + + mem_free(node->name); + mem_free(node); +} + +#ifdef UNIV_LOG_ARCHIVE +/******************************************************************** +Drops files from the start of a file space, so that its size is cut by +the amount given. */ +UNIV_INTERN +void +fil_space_truncate_start( +/*=====================*/ + ulint id, /* in: space id */ + ulint trunc_len) /* in: truncate by this much; it is an error + if this does not equal to the combined size of + some initial files in the space */ +{ + fil_system_t* system = fil_system; + fil_node_t* node; + fil_space_t* space; + + mutex_enter(&(system->mutex)); + + space = fil_space_get_by_id(id); + + ut_a(space); + + while (trunc_len > 0) { + node = UT_LIST_GET_FIRST(space->chain); + + ut_a(node->size * UNIV_PAGE_SIZE <= trunc_len); + + trunc_len -= node->size * UNIV_PAGE_SIZE; + + fil_node_free(node, system, space); + } + + mutex_exit(&(system->mutex)); +} +#endif /* UNIV_LOG_ARCHIVE */ + +/*********************************************************************** +Creates a space memory object and puts it to the tablespace memory cache. If +there is an error, prints an error message to the .err log. */ +UNIV_INTERN +ibool +fil_space_create( +/*=============*/ + /* out: TRUE if success */ + const char* name, /* in: space name */ + ulint id, /* in: space id */ + ulint flags, /* in: compressed page size + and file format, or 0 */ + ulint purpose)/* in: FIL_TABLESPACE, or FIL_LOG if log */ +{ + fil_system_t* system = fil_system; + fil_space_t* space; + + /* The tablespace flags (FSP_SPACE_FLAGS) should be 0 for + ROW_FORMAT=COMPACT (table->flags == DICT_TF_COMPACT) and + ROW_FORMAT=REDUNDANT (table->flags == 0). For any other + format, the tablespace flags should equal table->flags. */ + ut_a(flags != DICT_TF_COMPACT); + +try_again: + /*printf( + "InnoDB: Adding tablespace %lu of name %s, purpose %lu\n", id, name, + purpose);*/ + + ut_a(system); + ut_a(name); + + mutex_enter(&(system->mutex)); + + space = fil_space_get_by_name(name); + + if (UNIV_LIKELY_NULL(space)) { + ulint namesake_id; + + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: Warning: trying to init to the" + " tablespace memory cache\n" + "InnoDB: a tablespace %lu of name ", (ulong) id); + ut_print_filename(stderr, name); + fprintf(stderr, ",\n" + "InnoDB: but a tablespace %lu of the same name\n" + "InnoDB: already exists in the" + " tablespace memory cache!\n", + (ulong) space->id); + + if (id == 0 || purpose != FIL_TABLESPACE) { + + mutex_exit(&(system->mutex)); + + return(FALSE); + } + + fprintf(stderr, + "InnoDB: We assume that InnoDB did a crash recovery," + " and you had\n" + "InnoDB: an .ibd file for which the table" + " did not exist in the\n" + "InnoDB: InnoDB internal data dictionary in the" + " ibdata files.\n" + "InnoDB: We assume that you later removed the" + " .ibd and .frm files,\n" + "InnoDB: and are now trying to recreate the table." + " We now remove the\n" + "InnoDB: conflicting tablespace object" + " from the memory cache and try\n" + "InnoDB: the init again.\n"); + + namesake_id = space->id; + + mutex_exit(&(system->mutex)); + + fil_space_free(namesake_id); + + goto try_again; + } + + space = fil_space_get_by_id(id); + + if (UNIV_LIKELY_NULL(space)) { + fprintf(stderr, + "InnoDB: Error: trying to add tablespace %lu" + " of name ", (ulong) id); + ut_print_filename(stderr, name); + fprintf(stderr, "\n" + "InnoDB: to the tablespace memory cache," + " but tablespace\n" + "InnoDB: %lu of name ", (ulong) space->id); + ut_print_filename(stderr, space->name); + fputs(" already exists in the tablespace\n" + "InnoDB: memory cache!\n", stderr); + + mutex_exit(&(system->mutex)); + + return(FALSE); + } + + space = mem_alloc(sizeof(fil_space_t)); + + space->name = mem_strdup(name); + space->id = id; + + system->tablespace_version++; + space->tablespace_version = system->tablespace_version; + space->mark = FALSE; + + if (purpose == FIL_TABLESPACE && id > system->max_assigned_id) { + system->max_assigned_id = id; + } + + space->stop_ios = FALSE; + space->stop_ibuf_merges = FALSE; + space->is_being_deleted = FALSE; + space->purpose = purpose; + space->size = 0; + space->flags = flags; + + space->n_reserved_extents = 0; + + space->n_pending_flushes = 0; + space->n_pending_ibuf_merges = 0; + + UT_LIST_INIT(space->chain); + space->magic_n = FIL_SPACE_MAGIC_N; + + rw_lock_create(&space->latch, SYNC_FSP); + + HASH_INSERT(fil_space_t, hash, system->spaces, id, space); + + HASH_INSERT(fil_space_t, name_hash, system->name_hash, + ut_fold_string(name), space); + space->is_in_unflushed_spaces = FALSE; + + UT_LIST_ADD_LAST(space_list, system->space_list, space); + + mutex_exit(&(system->mutex)); + + return(TRUE); +} + +/*********************************************************************** +Assigns a new space id for a new single-table tablespace. This works simply by +incrementing the global counter. If 4 billion id's is not enough, we may need +to recycle id's. */ +static +ulint +fil_assign_new_space_id(void) +/*=========================*/ + /* out: new tablespace id; ULINT_UNDEFINED if could + not assign an id */ +{ + fil_system_t* system = fil_system; + ulint id; + + mutex_enter(&(system->mutex)); + + system->max_assigned_id++; + + id = system->max_assigned_id; + + if (id > (SRV_LOG_SPACE_FIRST_ID / 2) && (id % 1000000UL == 0)) { + ut_print_timestamp(stderr); + fprintf(stderr, + "InnoDB: Warning: you are running out of new" + " single-table tablespace id's.\n" + "InnoDB: Current counter is %lu and it" + " must not exceed %lu!\n" + "InnoDB: To reset the counter to zero" + " you have to dump all your tables and\n" + "InnoDB: recreate the whole InnoDB installation.\n", + (ulong) id, + (ulong) SRV_LOG_SPACE_FIRST_ID); + } + + if (id >= SRV_LOG_SPACE_FIRST_ID) { + ut_print_timestamp(stderr); + fprintf(stderr, + "InnoDB: You have run out of single-table" + " tablespace id's!\n" + "InnoDB: Current counter is %lu.\n" + "InnoDB: To reset the counter to zero you" + " have to dump all your tables and\n" + "InnoDB: recreate the whole InnoDB installation.\n", + (ulong) id); + system->max_assigned_id--; + + id = ULINT_UNDEFINED; + } + + mutex_exit(&(system->mutex)); + + return(id); +} + +/*********************************************************************** +Frees a space object from the tablespace memory cache. Closes the files in +the chain but does not delete them. There must not be any pending i/o's or +flushes on the files. */ +UNIV_INTERN +ibool +fil_space_free( +/*===========*/ + /* out: TRUE if success */ + ulint id) /* in: space id */ +{ + fil_system_t* system = fil_system; + fil_space_t* space; + fil_space_t* namespace; + fil_node_t* fil_node; + + mutex_enter(&(system->mutex)); + + space = fil_space_get_by_id(id); + + if (!space) { + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: Error: trying to remove tablespace %lu" + " from the cache but\n" + "InnoDB: it is not there.\n", (ulong) id); + + mutex_exit(&(system->mutex)); + + return(FALSE); + } + + HASH_DELETE(fil_space_t, hash, system->spaces, id, space); + + namespace = fil_space_get_by_name(space->name); + ut_a(namespace); + ut_a(space == namespace); + + HASH_DELETE(fil_space_t, name_hash, system->name_hash, + ut_fold_string(space->name), space); + + if (space->is_in_unflushed_spaces) { + space->is_in_unflushed_spaces = FALSE; + + UT_LIST_REMOVE(unflushed_spaces, system->unflushed_spaces, + space); + } + + UT_LIST_REMOVE(space_list, system->space_list, space); + + ut_a(space->magic_n == FIL_SPACE_MAGIC_N); + ut_a(0 == space->n_pending_flushes); + + fil_node = UT_LIST_GET_FIRST(space->chain); + + while (fil_node != NULL) { + fil_node_free(fil_node, system, space); + + fil_node = UT_LIST_GET_FIRST(space->chain); + } + + ut_a(0 == UT_LIST_GET_LEN(space->chain)); + + mutex_exit(&(system->mutex)); + + rw_lock_free(&(space->latch)); + + mem_free(space->name); + mem_free(space); + + return(TRUE); +} + +#ifdef UNIV_HOTBACKUP +/*********************************************************************** +Returns the tablespace object for a given id, or NULL if not found from the +tablespace memory cache. */ +static +fil_space_t* +fil_get_space_for_id_low( +/*=====================*/ + /* out: tablespace object or NULL; NOTE that you must + own &(fil_system->mutex) to call this function! */ + ulint id) /* in: space id */ +{ + fil_system_t* system = fil_system; + fil_space_t* space; + + ut_ad(system); + + space = fil_space_get_by_id(id); + + return(space); +} +#endif + +/*********************************************************************** +Returns the size of the space in pages. The tablespace must be cached in the +memory cache. */ +UNIV_INTERN +ulint +fil_space_get_size( +/*===============*/ + /* out: space size, 0 if space not found */ + ulint id) /* in: space id */ +{ + fil_system_t* system = fil_system; + fil_node_t* node; + fil_space_t* space; + ulint size; + + ut_ad(system); + + fil_mutex_enter_and_prepare_for_io(id); + + space = fil_space_get_by_id(id); + + if (space == NULL) { + mutex_exit(&(system->mutex)); + + return(0); + } + + if (space->size == 0 && space->purpose == FIL_TABLESPACE) { + ut_a(id != 0); + + ut_a(1 == UT_LIST_GET_LEN(space->chain)); + + node = UT_LIST_GET_FIRST(space->chain); + + /* It must be a single-table tablespace and we have not opened + the file yet; the following calls will open it and update the + size fields */ + + fil_node_prepare_for_io(node, system, space); + fil_node_complete_io(node, system, OS_FILE_READ); + } + + size = space->size; + + mutex_exit(&(system->mutex)); + + return(size); +} + +/*********************************************************************** +Returns the flags of the space. The tablespace must be cached +in the memory cache. */ +UNIV_INTERN +ulint +fil_space_get_flags( +/*================*/ + /* out: flags, ULINT_UNDEFINED if space not found */ + ulint id) /* in: space id */ +{ + fil_system_t* system = fil_system; + fil_node_t* node; + fil_space_t* space; + ulint flags; + + ut_ad(system); + + if (UNIV_UNLIKELY(!id)) { + return(0); + } + + fil_mutex_enter_and_prepare_for_io(id); + + space = fil_space_get_by_id(id); + + if (space == NULL) { + mutex_exit(&(system->mutex)); + + return(ULINT_UNDEFINED); + } + + if (space->size == 0 && space->purpose == FIL_TABLESPACE) { + ut_a(id != 0); + + ut_a(1 == UT_LIST_GET_LEN(space->chain)); + + node = UT_LIST_GET_FIRST(space->chain); + + /* It must be a single-table tablespace and we have not opened + the file yet; the following calls will open it and update the + size fields */ + + fil_node_prepare_for_io(node, system, space); + fil_node_complete_io(node, system, OS_FILE_READ); + } + + flags = space->flags; + + mutex_exit(&(system->mutex)); + + return(flags); +} + +/*********************************************************************** +Returns the compressed page size of the space, or 0 if the space +is not compressed. The tablespace must be cached in the memory cache. */ +UNIV_INTERN +ulint +fil_space_get_zip_size( +/*===================*/ + /* out: compressed page size, ULINT_UNDEFINED + if space not found */ + ulint id) /* in: space id */ +{ + ulint flags; + + flags = fil_space_get_flags(id); + + if (flags && flags != ULINT_UNDEFINED) { + + return(dict_table_flags_to_zip_size(flags)); + } + + return(flags); +} + +/*********************************************************************** +Checks if the pair space, page_no refers to an existing page in a tablespace +file space. The tablespace must be cached in the memory cache. */ +UNIV_INTERN +ibool +fil_check_adress_in_tablespace( +/*===========================*/ + /* out: TRUE if the address is meaningful */ + ulint id, /* in: space id */ + ulint page_no)/* in: page number */ +{ + if (fil_space_get_size(id) > page_no) { + + return(TRUE); + } + + return(FALSE); +} + +/******************************************************************** +Creates a the tablespace memory cache. */ +static +fil_system_t* +fil_system_create( +/*==============*/ + /* out, own: tablespace memory cache */ + ulint hash_size, /* in: hash table size */ + ulint max_n_open) /* in: maximum number of open files; must be + > 10 */ +{ + fil_system_t* system; + + ut_a(hash_size > 0); + ut_a(max_n_open > 0); + + system = mem_alloc(sizeof(fil_system_t)); + + mutex_create(&system->mutex, SYNC_ANY_LATCH); + + system->spaces = hash_create(hash_size); + system->name_hash = hash_create(hash_size); + + UT_LIST_INIT(system->LRU); + + system->n_open = 0; + system->max_n_open = max_n_open; + + system->modification_counter = 0; + system->max_assigned_id = 0; + + system->tablespace_version = 0; + + UT_LIST_INIT(system->unflushed_spaces); + UT_LIST_INIT(system->space_list); + + return(system); +} + +/******************************************************************** +Initializes the tablespace memory cache. */ +UNIV_INTERN +void +fil_init( +/*=====*/ + ulint max_n_open) /* in: max number of open files */ +{ + ulint hash_size; + + ut_a(fil_system == NULL); + + if (srv_file_per_table) { + hash_size = 50000; + } else { + hash_size = 5000; + } + + fil_system = fil_system_create(hash_size, max_n_open); +} + +/*********************************************************************** +Opens all log files and system tablespace data files. They stay open until the +database server shutdown. This should be called at a server startup after the +space objects for the log and the system tablespace have been created. The +purpose of this operation is to make sure we never run out of file descriptors +if we need to read from the insert buffer or to write to the log. */ +UNIV_INTERN +void +fil_open_log_and_system_tablespace_files(void) +/*==========================================*/ +{ + fil_system_t* system = fil_system; + fil_space_t* space; + fil_node_t* node; + + mutex_enter(&(system->mutex)); + + space = UT_LIST_GET_FIRST(system->space_list); + + while (space != NULL) { + if (space->purpose != FIL_TABLESPACE || space->id == 0) { + node = UT_LIST_GET_FIRST(space->chain); + + while (node != NULL) { + if (!node->open) { + fil_node_open_file(node, system, + space); + } + if (system->max_n_open < 10 + system->n_open) { + fprintf(stderr, + "InnoDB: Warning: you must" + " raise the value of" + " innodb_max_open_files in\n" + "InnoDB: my.cnf! Remember that" + " InnoDB keeps all log files" + " and all system\n" + "InnoDB: tablespace files open" + " for the whole time mysqld is" + " running, and\n" + "InnoDB: needs to open also" + " some .ibd files if the" + " file-per-table storage\n" + "InnoDB: model is used." + " Current open files %lu," + " max allowed" + " open files %lu.\n", + (ulong) system->n_open, + (ulong) system->max_n_open); + } + node = UT_LIST_GET_NEXT(chain, node); + } + } + space = UT_LIST_GET_NEXT(space_list, space); + } + + mutex_exit(&(system->mutex)); +} + +/*********************************************************************** +Closes all open files. There must not be any pending i/o's or not flushed +modifications in the files. */ +UNIV_INTERN +void +fil_close_all_files(void) +/*=====================*/ +{ + fil_system_t* system = fil_system; + fil_space_t* space; + fil_node_t* node; + + mutex_enter(&(system->mutex)); + + space = UT_LIST_GET_FIRST(system->space_list); + + while (space != NULL) { + node = UT_LIST_GET_FIRST(space->chain); + + while (node != NULL) { + if (node->open) { + fil_node_close_file(node, system); + } + node = UT_LIST_GET_NEXT(chain, node); + } + space = UT_LIST_GET_NEXT(space_list, space); + } + + mutex_exit(&(system->mutex)); +} + +/*********************************************************************** +Sets the max tablespace id counter if the given number is bigger than the +previous value. */ +UNIV_INTERN +void +fil_set_max_space_id_if_bigger( +/*===========================*/ + ulint max_id) /* in: maximum known id */ +{ + fil_system_t* system = fil_system; + + if (max_id >= SRV_LOG_SPACE_FIRST_ID) { + fprintf(stderr, + "InnoDB: Fatal error: max tablespace id" + " is too high, %lu\n", (ulong) max_id); + ut_a(0); + } + + mutex_enter(&(system->mutex)); + + if (system->max_assigned_id < max_id) { + + system->max_assigned_id = max_id; + } + + mutex_exit(&(system->mutex)); +} + +/******************************************************************** +Writes the flushed lsn and the latest archived log number to the page header +of the first page of a data file of the system tablespace (space 0), +which is uncompressed. */ +static +ulint +fil_write_lsn_and_arch_no_to_file( +/*==============================*/ + ulint sum_of_sizes, /* in: combined size of previous files + in space, in database pages */ + ib_uint64_t lsn, /* in: lsn to write */ + ulint arch_log_no /* in: archived log number to write */ + __attribute__((unused))) +{ + byte* buf1; + byte* buf; + + buf1 = mem_alloc(2 * UNIV_PAGE_SIZE); + buf = ut_align(buf1, UNIV_PAGE_SIZE); + + fil_read(TRUE, 0, 0, sum_of_sizes, 0, UNIV_PAGE_SIZE, buf, NULL); + + mach_write_ull(buf + FIL_PAGE_FILE_FLUSH_LSN, lsn); + + fil_write(TRUE, 0, 0, sum_of_sizes, 0, UNIV_PAGE_SIZE, buf, NULL); + + mem_free(buf1); + + return(DB_SUCCESS); +} + +/******************************************************************** +Writes the flushed lsn and the latest archived log number to the page +header of the first page of each data file in the system tablespace. */ +UNIV_INTERN +ulint +fil_write_flushed_lsn_to_data_files( +/*================================*/ + /* out: DB_SUCCESS or error number */ + ib_uint64_t lsn, /* in: lsn to write */ + ulint arch_log_no) /* in: latest archived log + file number */ +{ + fil_space_t* space; + fil_node_t* node; + ulint sum_of_sizes; + ulint err; + + mutex_enter(&(fil_system->mutex)); + + space = UT_LIST_GET_FIRST(fil_system->space_list); + + while (space) { + /* We only write the lsn to all existing data files which have + been open during the lifetime of the mysqld process; they are + represented by the space objects in the tablespace memory + cache. Note that all data files in the system tablespace 0 are + always open. */ + + if (space->purpose == FIL_TABLESPACE + && space->id == 0) { + sum_of_sizes = 0; + + node = UT_LIST_GET_FIRST(space->chain); + while (node) { + mutex_exit(&(fil_system->mutex)); + + err = fil_write_lsn_and_arch_no_to_file( + sum_of_sizes, lsn, arch_log_no); + if (err != DB_SUCCESS) { + + return(err); + } + + mutex_enter(&(fil_system->mutex)); + + sum_of_sizes += node->size; + node = UT_LIST_GET_NEXT(chain, node); + } + } + space = UT_LIST_GET_NEXT(space_list, space); + } + + mutex_exit(&(fil_system->mutex)); + + return(DB_SUCCESS); +} + +/*********************************************************************** +Reads the flushed lsn and arch no fields from a data file at database +startup. */ +UNIV_INTERN +void +fil_read_flushed_lsn_and_arch_log_no( +/*=================================*/ + os_file_t data_file, /* in: open data file */ + ibool one_read_already, /* in: TRUE if min and max + parameters below already + contain sensible data */ +#ifdef UNIV_LOG_ARCHIVE + ulint* min_arch_log_no, /* in/out: */ + ulint* max_arch_log_no, /* in/out: */ +#endif /* UNIV_LOG_ARCHIVE */ + ib_uint64_t* min_flushed_lsn, /* in/out: */ + ib_uint64_t* max_flushed_lsn) /* in/out: */ +{ + byte* buf; + byte* buf2; + ib_uint64_t flushed_lsn; + + buf2 = ut_malloc(2 * UNIV_PAGE_SIZE); + /* Align the memory for a possible read from a raw device */ + buf = ut_align(buf2, UNIV_PAGE_SIZE); + + os_file_read(data_file, buf, 0, 0, UNIV_PAGE_SIZE); + + flushed_lsn = mach_read_ull(buf + FIL_PAGE_FILE_FLUSH_LSN); + + ut_free(buf2); + + if (!one_read_already) { + *min_flushed_lsn = flushed_lsn; + *max_flushed_lsn = flushed_lsn; +#ifdef UNIV_LOG_ARCHIVE + *min_arch_log_no = arch_log_no; + *max_arch_log_no = arch_log_no; +#endif /* UNIV_LOG_ARCHIVE */ + return; + } + + if (*min_flushed_lsn > flushed_lsn) { + *min_flushed_lsn = flushed_lsn; + } + if (*max_flushed_lsn < flushed_lsn) { + *max_flushed_lsn = flushed_lsn; + } +#ifdef UNIV_LOG_ARCHIVE + if (*min_arch_log_no > arch_log_no) { + *min_arch_log_no = arch_log_no; + } + if (*max_arch_log_no < arch_log_no) { + *max_arch_log_no = arch_log_no; + } +#endif /* UNIV_LOG_ARCHIVE */ +} + +/*================ SINGLE-TABLE TABLESPACES ==========================*/ + +/*********************************************************************** +Increments the count of pending insert buffer page merges, if space is not +being deleted. */ +UNIV_INTERN +ibool +fil_inc_pending_ibuf_merges( +/*========================*/ + /* out: TRUE if being deleted, and ibuf merges should + be skipped */ + ulint id) /* in: space id */ +{ + fil_system_t* system = fil_system; + fil_space_t* space; + + mutex_enter(&(system->mutex)); + + space = fil_space_get_by_id(id); + + if (space == NULL) { + fprintf(stderr, + "InnoDB: Error: trying to do ibuf merge to a" + " dropped tablespace %lu\n", + (ulong) id); + } + + if (space == NULL || space->stop_ibuf_merges) { + mutex_exit(&(system->mutex)); + + return(TRUE); + } + + space->n_pending_ibuf_merges++; + + mutex_exit(&(system->mutex)); + + return(FALSE); +} + +/*********************************************************************** +Decrements the count of pending insert buffer page merges. */ +UNIV_INTERN +void +fil_decr_pending_ibuf_merges( +/*=========================*/ + ulint id) /* in: space id */ +{ + fil_system_t* system = fil_system; + fil_space_t* space; + + mutex_enter(&(system->mutex)); + + space = fil_space_get_by_id(id); + + if (space == NULL) { + fprintf(stderr, + "InnoDB: Error: decrementing ibuf merge of a" + " dropped tablespace %lu\n", + (ulong) id); + } + + if (space != NULL) { + space->n_pending_ibuf_merges--; + } + + mutex_exit(&(system->mutex)); +} + +/************************************************************ +Creates the database directory for a table if it does not exist yet. */ +static +void +fil_create_directory_for_tablename( +/*===============================*/ + const char* name) /* in: name in the standard + 'databasename/tablename' format */ +{ + const char* namend; + char* path; + ulint len; + + len = strlen(fil_path_to_mysql_datadir); + namend = strchr(name, '/'); + ut_a(namend); + path = mem_alloc(len + (namend - name) + 2); + + memcpy(path, fil_path_to_mysql_datadir, len); + path[len] = '/'; + memcpy(path + len + 1, name, namend - name); + path[len + (namend - name) + 1] = 0; + + srv_normalize_path_for_win(path); + + ut_a(os_file_create_directory(path, FALSE)); + mem_free(path); +} + +#ifndef UNIV_HOTBACKUP +/************************************************************ +Writes a log record about an .ibd file create/rename/delete. */ +static +void +fil_op_write_log( +/*=============*/ + ulint type, /* in: MLOG_FILE_CREATE, + MLOG_FILE_CREATE2, + MLOG_FILE_DELETE, or + MLOG_FILE_RENAME */ + ulint space_id, /* in: space id */ + ulint flags, /* in: compressed page size + and file format + if type==MLOG_FILE_CREATE2, or 0 */ + const char* name, /* in: table name in the familiar + 'databasename/tablename' format, or + the file path in the case of + MLOG_FILE_DELETE */ + const char* new_name, /* in: if type is MLOG_FILE_RENAME, + the new table name in the + 'databasename/tablename' format */ + mtr_t* mtr) /* in: mini-transaction handle */ +{ + byte* log_ptr; + ulint len; + + log_ptr = mlog_open(mtr, 11 + 2 + 1); + + if (!log_ptr) { + /* Logging in mtr is switched off during crash recovery: + in that case mlog_open returns NULL */ + return; + } + + log_ptr = mlog_write_initial_log_record_for_file_op(type, space_id, 0, + log_ptr, mtr); + if (type == MLOG_FILE_CREATE2) { + mach_write_to_4(log_ptr, flags); + log_ptr += 4; + } + /* Let us store the strings as null-terminated for easier readability + and handling */ + + len = strlen(name) + 1; + + mach_write_to_2(log_ptr, len); + log_ptr += 2; + mlog_close(mtr, log_ptr); + + mlog_catenate_string(mtr, (byte*) name, len); + + if (type == MLOG_FILE_RENAME) { + len = strlen(new_name) + 1; + log_ptr = mlog_open(mtr, 2 + len); + ut_a(log_ptr); + mach_write_to_2(log_ptr, len); + log_ptr += 2; + mlog_close(mtr, log_ptr); + + mlog_catenate_string(mtr, (byte*) new_name, len); + } +} +#endif + +/*********************************************************************** +Parses the body of a log record written about an .ibd file operation. That is, +the log record part after the standard (type, space id, page no) header of the +log record. + +If desired, also replays the delete or rename operation if the .ibd file +exists and the space id in it matches. Replays the create operation if a file +at that path does not exist yet. If the database directory for the file to be +created does not exist, then we create the directory, too. + +Note that ibbackup --apply-log sets fil_path_to_mysql_datadir to point to the +datadir that we should use in replaying the file operations. */ +UNIV_INTERN +byte* +fil_op_log_parse_or_replay( +/*=======================*/ + /* out: end of log record, or NULL if the + record was not completely contained between + ptr and end_ptr */ + byte* ptr, /* in: buffer containing the log record body, + or an initial segment of it, if the record does + not fir completely between ptr and end_ptr */ + byte* end_ptr, /* in: buffer end */ + ulint type, /* in: the type of this log record */ + ulint space_id) /* in: the space id of the tablespace in + question, or 0 if the log record should + only be parsed but not replayed */ +{ + ulint name_len; + ulint new_name_len; + const char* name; + const char* new_name = NULL; + ulint flags = 0; + + if (type == MLOG_FILE_CREATE2) { + if (end_ptr < ptr + 4) { + + return(NULL); + } + + flags = mach_read_from_4(ptr); + ptr += 4; + } + + if (end_ptr < ptr + 2) { + + return(NULL); + } + + name_len = mach_read_from_2(ptr); + + ptr += 2; + + if (end_ptr < ptr + name_len) { + + return(NULL); + } + + name = (const char*) ptr; + + ptr += name_len; + + if (type == MLOG_FILE_RENAME) { + if (end_ptr < ptr + 2) { + + return(NULL); + } + + new_name_len = mach_read_from_2(ptr); + + ptr += 2; + + if (end_ptr < ptr + new_name_len) { + + return(NULL); + } + + new_name = (const char*) ptr; + + ptr += new_name_len; + } + + /* We managed to parse a full log record body */ + /* + printf("Parsed log rec of type %lu space %lu\n" + "name %s\n", type, space_id, name); + + if (type == MLOG_FILE_RENAME) { + printf("new name %s\n", new_name); + } + */ + if (!space_id) { + + return(ptr); + } + + /* Let us try to perform the file operation, if sensible. Note that + ibbackup has at this stage already read in all space id info to the + fil0fil.c data structures. + + NOTE that our algorithm is not guaranteed to work correctly if there + were renames of tables during the backup. See ibbackup code for more + on the problem. */ + + switch (type) { + case MLOG_FILE_DELETE: + if (fil_tablespace_exists_in_mem(space_id)) { + ut_a(fil_delete_tablespace(space_id)); + } + + break; + + case MLOG_FILE_RENAME: + /* We do the rename based on space id, not old file name; + this should guarantee that after the log replay each .ibd file + has the correct name for the latest log sequence number; the + proof is left as an exercise :) */ + + if (fil_tablespace_exists_in_mem(space_id)) { + /* Create the database directory for the new name, if + it does not exist yet */ + fil_create_directory_for_tablename(new_name); + + /* Rename the table if there is not yet a tablespace + with the same name */ + + if (fil_get_space_id_for_table(new_name) + == ULINT_UNDEFINED) { + /* We do not care of the old name, that is + why we pass NULL as the first argument */ + if (!fil_rename_tablespace(NULL, space_id, + new_name)) { + ut_error; + } + } + } + + break; + + case MLOG_FILE_CREATE: + case MLOG_FILE_CREATE2: + if (fil_tablespace_exists_in_mem(space_id)) { + /* Do nothing */ + } else if (fil_get_space_id_for_table(name) + != ULINT_UNDEFINED) { + /* Do nothing */ + } else { + /* Create the database directory for name, if it does + not exist yet */ + fil_create_directory_for_tablename(name); + + if (fil_create_new_single_table_tablespace( + &space_id, name, FALSE, flags, + FIL_IBD_FILE_INITIAL_SIZE) != DB_SUCCESS) { + ut_error; + } + } + + break; + + default: + ut_error; + } + + return(ptr); +} + +/*********************************************************************** +Deletes a single-table tablespace. The tablespace must be cached in the +memory cache. */ +UNIV_INTERN +ibool +fil_delete_tablespace( +/*==================*/ + /* out: TRUE if success */ + ulint id) /* in: space id */ +{ + fil_system_t* system = fil_system; + ibool success; + fil_space_t* space; + fil_node_t* node; + ulint count = 0; + char* path; + + ut_a(id != 0); +stop_ibuf_merges: + mutex_enter(&(system->mutex)); + + space = fil_space_get_by_id(id); + + if (space != NULL) { + space->stop_ibuf_merges = TRUE; + + if (space->n_pending_ibuf_merges == 0) { + mutex_exit(&(system->mutex)); + + count = 0; + + goto try_again; + } else { + if (count > 5000) { + ut_print_timestamp(stderr); + fputs(" InnoDB: Warning: trying to" + " delete tablespace ", stderr); + ut_print_filename(stderr, space->name); + fprintf(stderr, ",\n" + "InnoDB: but there are %lu pending" + " ibuf merges on it.\n" + "InnoDB: Loop %lu.\n", + (ulong) space->n_pending_ibuf_merges, + (ulong) count); + } + + mutex_exit(&(system->mutex)); + + os_thread_sleep(20000); + count++; + + goto stop_ibuf_merges; + } + } + + mutex_exit(&(system->mutex)); + count = 0; + +try_again: + mutex_enter(&(system->mutex)); + + space = fil_space_get_by_id(id); + + if (space == NULL) { + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: Error: cannot delete tablespace %lu\n" + "InnoDB: because it is not found in the" + " tablespace memory cache.\n", + (ulong) id); + + mutex_exit(&(system->mutex)); + + return(FALSE); + } + + ut_a(space); + ut_a(space->n_pending_ibuf_merges == 0); + + space->is_being_deleted = TRUE; + + ut_a(UT_LIST_GET_LEN(space->chain) == 1); + node = UT_LIST_GET_FIRST(space->chain); + + if (space->n_pending_flushes > 0 || node->n_pending > 0) { + if (count > 1000) { + ut_print_timestamp(stderr); + fputs(" InnoDB: Warning: trying to" + " delete tablespace ", stderr); + ut_print_filename(stderr, space->name); + fprintf(stderr, ",\n" + "InnoDB: but there are %lu flushes" + " and %lu pending i/o's on it\n" + "InnoDB: Loop %lu.\n", + (ulong) space->n_pending_flushes, + (ulong) node->n_pending, + (ulong) count); + } + mutex_exit(&(system->mutex)); + os_thread_sleep(20000); + + count++; + + goto try_again; + } + + path = mem_strdup(space->name); + + mutex_exit(&(system->mutex)); +#ifndef UNIV_HOTBACKUP + /* Invalidate in the buffer pool all pages belonging to the + tablespace. Since we have set space->is_being_deleted = TRUE, readahead + or ibuf merge can no longer read more pages of this tablespace to the + buffer pool. Thus we can clean the tablespace out of the buffer pool + completely and permanently. The flag is_being_deleted also prevents + fil_flush() from being applied to this tablespace. */ + + buf_LRU_invalidate_tablespace(id); +#endif + /* printf("Deleting tablespace %s id %lu\n", space->name, id); */ + + success = fil_space_free(id); + + if (success) { + success = os_file_delete(path); + + if (!success) { + success = os_file_delete_if_exists(path); + } + } + + if (success) { +#ifndef UNIV_HOTBACKUP + /* Write a log record about the deletion of the .ibd + file, so that ibbackup can replay it in the + --apply-log phase. We use a dummy mtr and the familiar + log write mechanism. */ + mtr_t mtr; + + /* When replaying the operation in ibbackup, do not try + to write any log record */ + mtr_start(&mtr); + + fil_op_write_log(MLOG_FILE_DELETE, id, 0, path, NULL, &mtr); + mtr_commit(&mtr); +#endif + mem_free(path); + + return(TRUE); + } + + mem_free(path); + + return(FALSE); +} + +/*********************************************************************** +Discards a single-table tablespace. The tablespace must be cached in the +memory cache. Discarding is like deleting a tablespace, but +1) we do not drop the table from the data dictionary; +2) we remove all insert buffer entries for the tablespace immediately; in DROP +TABLE they are only removed gradually in the background; +3) when the user does IMPORT TABLESPACE, the tablespace will have the same id +as it originally had. */ +UNIV_INTERN +ibool +fil_discard_tablespace( +/*===================*/ + /* out: TRUE if success */ + ulint id) /* in: space id */ +{ + ibool success; + + success = fil_delete_tablespace(id); + + if (!success) { + fprintf(stderr, + "InnoDB: Warning: cannot delete tablespace %lu" + " in DISCARD TABLESPACE.\n" + "InnoDB: But let us remove the" + " insert buffer entries for this tablespace.\n", + (ulong) id); + } + + /* Remove all insert buffer entries for the tablespace */ + + ibuf_delete_for_discarded_space(id); + + return(success); +} + +/*********************************************************************** +Renames the memory cache structures of a single-table tablespace. */ +static +ibool +fil_rename_tablespace_in_mem( +/*=========================*/ + /* out: TRUE if success */ + fil_space_t* space, /* in: tablespace memory object */ + fil_node_t* node, /* in: file node of that tablespace */ + const char* path) /* in: new name */ +{ + fil_system_t* system = fil_system; + fil_space_t* space2; + const char* old_name = space->name; + + space2 = fil_space_get_by_name(old_name); + if (space != space2) { + fputs("InnoDB: Error: cannot find ", stderr); + ut_print_filename(stderr, old_name); + fputs(" in tablespace memory cache\n", stderr); + + return(FALSE); + } + + space2 = fil_space_get_by_name(path); + if (space2 != NULL) { + fputs("InnoDB: Error: ", stderr); + ut_print_filename(stderr, path); + fputs(" is already in tablespace memory cache\n", stderr); + + return(FALSE); + } + + HASH_DELETE(fil_space_t, name_hash, system->name_hash, + ut_fold_string(space->name), space); + mem_free(space->name); + mem_free(node->name); + + space->name = mem_strdup(path); + node->name = mem_strdup(path); + + HASH_INSERT(fil_space_t, name_hash, system->name_hash, + ut_fold_string(path), space); + return(TRUE); +} + +/*********************************************************************** +Allocates a file name for a single-table tablespace. The string must be freed +by caller with mem_free(). */ +static +char* +fil_make_ibd_name( +/*==============*/ + /* out, own: file name */ + const char* name, /* in: table name or a dir path of a + TEMPORARY table */ + ibool is_temp) /* in: TRUE if it is a dir path */ +{ + ulint namelen = strlen(name); + ulint dirlen = strlen(fil_path_to_mysql_datadir); + char* filename = mem_alloc(namelen + dirlen + sizeof "/.ibd"); + + if (is_temp) { + memcpy(filename, name, namelen); + memcpy(filename + namelen, ".ibd", sizeof ".ibd"); + } else { + memcpy(filename, fil_path_to_mysql_datadir, dirlen); + filename[dirlen] = '/'; + + memcpy(filename + dirlen + 1, name, namelen); + memcpy(filename + dirlen + namelen + 1, ".ibd", sizeof ".ibd"); + } + + srv_normalize_path_for_win(filename); + + return(filename); +} + +/*********************************************************************** +Renames a single-table tablespace. The tablespace must be cached in the +tablespace memory cache. */ +UNIV_INTERN +ibool +fil_rename_tablespace( +/*==================*/ + /* out: TRUE if success */ + const char* old_name, /* in: old table name in the standard + databasename/tablename format of + InnoDB, or NULL if we do the rename + based on the space id only */ + ulint id, /* in: space id */ + const char* new_name) /* in: new table name in the standard + databasename/tablename format + of InnoDB */ +{ + fil_system_t* system = fil_system; + ibool success; + fil_space_t* space; + fil_node_t* node; + ulint count = 0; + char* path; + ibool old_name_was_specified = TRUE; + char* old_path; + + ut_a(id != 0); + + if (old_name == NULL) { + old_name = "(name not specified)"; + old_name_was_specified = FALSE; + } +retry: + count++; + + if (count > 1000) { + ut_print_timestamp(stderr); + fputs(" InnoDB: Warning: problems renaming ", stderr); + ut_print_filename(stderr, old_name); + fputs(" to ", stderr); + ut_print_filename(stderr, new_name); + fprintf(stderr, ", %lu iterations\n", (ulong) count); + } + + mutex_enter(&(system->mutex)); + + space = fil_space_get_by_id(id); + + if (space == NULL) { + fprintf(stderr, + "InnoDB: Error: cannot find space id %lu" + " in the tablespace memory cache\n" + "InnoDB: though the table ", (ulong) id); + ut_print_filename(stderr, old_name); + fputs(" in a rename operation should have that id\n", stderr); + mutex_exit(&(system->mutex)); + + return(FALSE); + } + + if (count > 25000) { + space->stop_ios = FALSE; + mutex_exit(&(system->mutex)); + + return(FALSE); + } + + /* We temporarily close the .ibd file because we do not trust that + operating systems can rename an open file. For the closing we have to + wait until there are no pending i/o's or flushes on the file. */ + + space->stop_ios = TRUE; + + ut_a(UT_LIST_GET_LEN(space->chain) == 1); + node = UT_LIST_GET_FIRST(space->chain); + + if (node->n_pending > 0 || node->n_pending_flushes > 0) { + /* There are pending i/o's or flushes, sleep for a while and + retry */ + + mutex_exit(&(system->mutex)); + + os_thread_sleep(20000); + + goto retry; + + } else if (node->modification_counter > node->flush_counter) { + /* Flush the space */ + + mutex_exit(&(system->mutex)); + + os_thread_sleep(20000); + + fil_flush(id); + + goto retry; + + } else if (node->open) { + /* Close the file */ + + fil_node_close_file(node, system); + } + + /* Check that the old name in the space is right */ + + if (old_name_was_specified) { + old_path = fil_make_ibd_name(old_name, FALSE); + + ut_a(strcmp(space->name, old_path) == 0); + ut_a(strcmp(node->name, old_path) == 0); + } else { + old_path = mem_strdup(space->name); + } + + /* Rename the tablespace and the node in the memory cache */ + path = fil_make_ibd_name(new_name, FALSE); + success = fil_rename_tablespace_in_mem(space, node, path); + + if (success) { + success = os_file_rename(old_path, path); + + if (!success) { + /* We have to revert the changes we made + to the tablespace memory cache */ + + ut_a(fil_rename_tablespace_in_mem(space, node, + old_path)); + } + } + + mem_free(path); + mem_free(old_path); + + space->stop_ios = FALSE; + + mutex_exit(&(system->mutex)); + +#ifndef UNIV_HOTBACKUP + if (success) { + mtr_t mtr; + + mtr_start(&mtr); + + fil_op_write_log(MLOG_FILE_RENAME, id, 0, old_name, new_name, + &mtr); + mtr_commit(&mtr); + } +#endif + return(success); +} + +/*********************************************************************** +Creates a new single-table tablespace to a database directory of MySQL. +Database directories are under the 'datadir' of MySQL. The datadir is the +directory of a running mysqld program. We can refer to it by simply the +path '.'. Tables created with CREATE TEMPORARY TABLE we place in the temp +dir of the mysqld server. */ +UNIV_INTERN +ulint +fil_create_new_single_table_tablespace( +/*===================================*/ + /* out: DB_SUCCESS or error code */ + ulint* space_id, /* in/out: space id; if this is != 0, + then this is an input parameter, + otherwise output */ + const char* tablename, /* in: the table name in the usual + databasename/tablename format + of InnoDB, or a dir path to a temp + table */ + ibool is_temp, /* in: TRUE if a table created with + CREATE TEMPORARY TABLE */ + ulint flags, /* in: tablespace flags */ + ulint size) /* in: the initial size of the + tablespace file in pages, + must be >= FIL_IBD_FILE_INITIAL_SIZE */ +{ + os_file_t file; + ibool ret; + ulint err; + byte* buf2; + byte* page; + ibool success; + char* path; + + ut_a(size >= FIL_IBD_FILE_INITIAL_SIZE); + /* The tablespace flags (FSP_SPACE_FLAGS) should be 0 for + ROW_FORMAT=COMPACT (table->flags == DICT_TF_COMPACT) and + ROW_FORMAT=REDUNDANT (table->flags == 0). For any other + format, the tablespace flags should equal table->flags. */ + ut_a(flags != DICT_TF_COMPACT); + + path = fil_make_ibd_name(tablename, is_temp); + + file = os_file_create(path, OS_FILE_CREATE, OS_FILE_NORMAL, + OS_DATA_FILE, &ret); + if (ret == FALSE) { + ut_print_timestamp(stderr); + fputs(" InnoDB: Error creating file ", stderr); + ut_print_filename(stderr, path); + fputs(".\n", stderr); + + /* The following call will print an error message */ + + err = os_file_get_last_error(TRUE); + + if (err == OS_FILE_ALREADY_EXISTS) { + fputs("InnoDB: The file already exists though" + " the corresponding table did not\n" + "InnoDB: exist in the InnoDB data dictionary." + " Have you moved InnoDB\n" + "InnoDB: .ibd files around without using the" + " SQL commands\n" + "InnoDB: DISCARD TABLESPACE and" + " IMPORT TABLESPACE, or did\n" + "InnoDB: mysqld crash in the middle of" + " CREATE TABLE? You can\n" + "InnoDB: resolve the problem by" + " removing the file ", stderr); + ut_print_filename(stderr, path); + fputs("\n" + "InnoDB: under the 'datadir' of MySQL.\n", + stderr); + + mem_free(path); + return(DB_TABLESPACE_ALREADY_EXISTS); + } + + if (err == OS_FILE_DISK_FULL) { + + mem_free(path); + return(DB_OUT_OF_FILE_SPACE); + } + + mem_free(path); + return(DB_ERROR); + } + + buf2 = ut_malloc(3 * UNIV_PAGE_SIZE); + /* Align the memory for file i/o if we might have O_DIRECT set */ + page = ut_align(buf2, UNIV_PAGE_SIZE); + + ret = os_file_set_size(path, file, size * UNIV_PAGE_SIZE, 0); + + if (!ret) { + ut_free(buf2); + os_file_close(file); + os_file_delete(path); + + mem_free(path); + return(DB_OUT_OF_FILE_SPACE); + } + + if (*space_id == 0) { + *space_id = fil_assign_new_space_id(); + } + + /* printf("Creating tablespace %s id %lu\n", path, *space_id); */ + + if (*space_id == ULINT_UNDEFINED) { + ut_free(buf2); +error_exit: + os_file_close(file); +error_exit2: + os_file_delete(path); + + mem_free(path); + return(DB_ERROR); + } + + /* We have to write the space id to the file immediately and flush the + file to disk. This is because in crash recovery we must be aware what + tablespaces exist and what are their space id's, so that we can apply + the log records to the right file. It may take quite a while until + buffer pool flush algorithms write anything to the file and flush it to + disk. If we would not write here anything, the file would be filled + with zeros from the call of os_file_set_size(), until a buffer pool + flush would write to it. */ + + memset(page, '\0', UNIV_PAGE_SIZE); + + fsp_header_init_fields(page, *space_id, flags); + mach_write_to_4(page + FIL_PAGE_ARCH_LOG_NO_OR_SPACE_ID, *space_id); + + if (!(flags & DICT_TF_ZSSIZE_MASK)) { + buf_flush_init_for_writing(page, NULL, 0); + ret = os_file_write(path, file, page, 0, 0, UNIV_PAGE_SIZE); + } else { + page_zip_des_t page_zip; + ulint zip_size; + + zip_size = ((PAGE_ZIP_MIN_SIZE >> 1) + << ((flags & DICT_TF_ZSSIZE_MASK) + >> DICT_TF_ZSSIZE_SHIFT)); + + page_zip_set_size(&page_zip, zip_size); + page_zip.data = page + UNIV_PAGE_SIZE; +#ifdef UNIV_DEBUG + page_zip.m_start = +#endif /* UNIV_DEBUG */ + page_zip.m_end = page_zip.m_nonempty = + page_zip.n_blobs = 0; + buf_flush_init_for_writing(page, &page_zip, 0); + ret = os_file_write(path, file, page_zip.data, 0, 0, zip_size); + } + + ut_free(buf2); + + if (!ret) { + fputs("InnoDB: Error: could not write the first page" + " to tablespace ", stderr); + ut_print_filename(stderr, path); + putc('\n', stderr); + goto error_exit; + } + + ret = os_file_flush(file); + + if (!ret) { + fputs("InnoDB: Error: file flush of tablespace ", stderr); + ut_print_filename(stderr, path); + fputs(" failed\n", stderr); + goto error_exit; + } + + os_file_close(file); + + if (*space_id == ULINT_UNDEFINED) { + goto error_exit2; + } + + success = fil_space_create(path, *space_id, flags, FIL_TABLESPACE); + + if (!success) { + goto error_exit2; + } + + fil_node_create(path, size, *space_id, FALSE); + +#ifndef UNIV_HOTBACKUP + { + mtr_t mtr; + + mtr_start(&mtr); + + fil_op_write_log(flags + ? MLOG_FILE_CREATE2 + : MLOG_FILE_CREATE, + *space_id, flags, + tablename, NULL, &mtr); + + mtr_commit(&mtr); + } +#endif + mem_free(path); + return(DB_SUCCESS); +} + +/************************************************************************ +It is possible, though very improbable, that the lsn's in the tablespace to be +imported have risen above the current system lsn, if a lengthy purge, ibuf +merge, or rollback was performed on a backup taken with ibbackup. If that is +the case, reset page lsn's in the file. We assume that mysqld was shut down +after it performed these cleanup operations on the .ibd file, so that it at +the shutdown stamped the latest lsn to the FIL_PAGE_FILE_FLUSH_LSN in the +first page of the .ibd file, and we can determine whether we need to reset the +lsn's just by looking at that flush lsn. */ +UNIV_INTERN +ibool +fil_reset_too_high_lsns( +/*====================*/ + /* out: TRUE if success */ + const char* name, /* in: table name in the + databasename/tablename format */ + ib_uint64_t current_lsn) /* in: reset lsn's if the lsn stamped + to FIL_PAGE_FILE_FLUSH_LSN in the + first page is too high */ +{ + os_file_t file; + char* filepath; + byte* page; + byte* buf2; + ib_uint64_t flush_lsn; + ulint space_id; + ib_int64_t file_size; + ib_int64_t offset; + ulint zip_size; + ibool success; + + filepath = fil_make_ibd_name(name, FALSE); + + file = os_file_create_simple_no_error_handling( + filepath, OS_FILE_OPEN, OS_FILE_READ_WRITE, &success); + if (!success) { + /* The following call prints an error message */ + os_file_get_last_error(TRUE); + + ut_print_timestamp(stderr); + + fputs(" InnoDB: Error: trying to open a table," + " but could not\n" + "InnoDB: open the tablespace file ", stderr); + ut_print_filename(stderr, filepath); + fputs("!\n", stderr); + mem_free(filepath); + + return(FALSE); + } + + /* Read the first page of the tablespace */ + + buf2 = ut_malloc(3 * UNIV_PAGE_SIZE); + /* Align the memory for file i/o if we might have O_DIRECT set */ + page = ut_align(buf2, UNIV_PAGE_SIZE); + + success = os_file_read(file, page, 0, 0, UNIV_PAGE_SIZE); + if (!success) { + + goto func_exit; + } + + /* We have to read the file flush lsn from the header of the file */ + + flush_lsn = mach_read_ull(page + FIL_PAGE_FILE_FLUSH_LSN); + + if (current_lsn >= flush_lsn) { + /* Ok */ + success = TRUE; + + goto func_exit; + } + + space_id = fsp_header_get_space_id(page); + zip_size = fsp_header_get_zip_size(page); + + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: Flush lsn in the tablespace file %lu" + " to be imported\n" + "InnoDB: is %llu, which exceeds current" + " system lsn %llu.\n" + "InnoDB: We reset the lsn's in the file ", + (ulong) space_id, + flush_lsn, current_lsn); + ut_print_filename(stderr, filepath); + fputs(".\n", stderr); + + ut_a(ut_is_2pow(zip_size)); + ut_a(zip_size <= UNIV_PAGE_SIZE); + + /* Loop through all the pages in the tablespace and reset the lsn and + the page checksum if necessary */ + + file_size = os_file_get_size_as_iblonglong(file); + + for (offset = 0; offset < file_size; + offset += zip_size ? zip_size : UNIV_PAGE_SIZE) { + success = os_file_read(file, page, + (ulint)(offset & 0xFFFFFFFFUL), + (ulint)(offset >> 32), + zip_size ? zip_size : UNIV_PAGE_SIZE); + if (!success) { + + goto func_exit; + } + if (mach_read_ull(page + FIL_PAGE_LSN) > current_lsn) { + /* We have to reset the lsn */ + + if (zip_size) { + memcpy(page + UNIV_PAGE_SIZE, page, zip_size); + buf_flush_init_for_writing( + page, page + UNIV_PAGE_SIZE, + current_lsn); + } else { + buf_flush_init_for_writing( + page, NULL, current_lsn); + } + success = os_file_write(filepath, file, page, + (ulint)(offset & 0xFFFFFFFFUL), + (ulint)(offset >> 32), + zip_size + ? zip_size + : UNIV_PAGE_SIZE); + if (!success) { + + goto func_exit; + } + } + } + + success = os_file_flush(file); + if (!success) { + + goto func_exit; + } + + /* We now update the flush_lsn stamp at the start of the file */ + success = os_file_read(file, page, 0, 0, + zip_size ? zip_size : UNIV_PAGE_SIZE); + if (!success) { + + goto func_exit; + } + + mach_write_ull(page + FIL_PAGE_FILE_FLUSH_LSN, current_lsn); + + success = os_file_write(filepath, file, page, 0, 0, + zip_size ? zip_size : UNIV_PAGE_SIZE); + if (!success) { + + goto func_exit; + } + success = os_file_flush(file); +func_exit: + os_file_close(file); + ut_free(buf2); + mem_free(filepath); + + return(success); +} + +/************************************************************************ +Tries to open a single-table tablespace and optionally checks the space id is +right in it. If does not succeed, prints an error message to the .err log. This +function is used to open a tablespace when we start up mysqld, and also in +IMPORT TABLESPACE. +NOTE that we assume this operation is used either at the database startup +or under the protection of the dictionary mutex, so that two users cannot +race here. This operation does not leave the file associated with the +tablespace open, but closes it after we have looked at the space id in it. */ +UNIV_INTERN +ibool +fil_open_single_table_tablespace( +/*=============================*/ + /* out: TRUE if success */ + ibool check_space_id, /* in: should we check that the space + id in the file is right; we assume + that this function runs much faster + if no check is made, since accessing + the file inode probably is much + faster (the OS caches them) than + accessing the first page of the file */ + ulint id, /* in: space id */ + ulint flags, /* in: tablespace flags */ + const char* name) /* in: table name in the + databasename/tablename format */ +{ + os_file_t file; + char* filepath; + ibool success; + byte* buf2; + byte* page; + ulint space_id; + ulint space_flags; + ibool ret = TRUE; + + filepath = fil_make_ibd_name(name, FALSE); + + /* The tablespace flags (FSP_SPACE_FLAGS) should be 0 for + ROW_FORMAT=COMPACT (table->flags == DICT_TF_COMPACT) and + ROW_FORMAT=REDUNDANT (table->flags == 0). For any other + format, the tablespace flags should equal table->flags. */ + ut_a(flags != DICT_TF_COMPACT); + + file = os_file_create_simple_no_error_handling( + filepath, OS_FILE_OPEN, OS_FILE_READ_ONLY, &success); + if (!success) { + /* The following call prints an error message */ + os_file_get_last_error(TRUE); + + ut_print_timestamp(stderr); + + fputs(" InnoDB: Error: trying to open a table," + " but could not\n" + "InnoDB: open the tablespace file ", stderr); + ut_print_filename(stderr, filepath); + fputs("!\n" + "InnoDB: Have you moved InnoDB .ibd files around" + " without using the\n" + "InnoDB: commands DISCARD TABLESPACE and" + " IMPORT TABLESPACE?\n" + "InnoDB: It is also possible that this is" + " a temporary table #sql...,\n" + "InnoDB: and MySQL removed the .ibd file for this.\n" + "InnoDB: Please refer to\n" + "InnoDB: http://dev.mysql.com/doc/refman/5.1/en/" + "innodb-troubleshooting.html\n" + "InnoDB: for how to resolve the issue.\n", stderr); + + mem_free(filepath); + + return(FALSE); + } + + if (!check_space_id) { + space_id = id; + + goto skip_check; + } + + /* Read the first page of the tablespace */ + + buf2 = ut_malloc(2 * UNIV_PAGE_SIZE); + /* Align the memory for file i/o if we might have O_DIRECT set */ + page = ut_align(buf2, UNIV_PAGE_SIZE); + + success = os_file_read(file, page, 0, 0, UNIV_PAGE_SIZE); + + /* We have to read the tablespace id and flags from the file. */ + + space_id = fsp_header_get_space_id(page); + space_flags = fsp_header_get_flags(page); + + ut_free(buf2); + + if (UNIV_UNLIKELY(space_id != id || space_flags != flags)) { + ut_print_timestamp(stderr); + + fputs(" InnoDB: Error: tablespace id and flags in file ", + stderr); + ut_print_filename(stderr, filepath); + fprintf(stderr, " are %lu and %lu, but in the InnoDB\n" + "InnoDB: data dictionary they are %lu and %lu.\n" + "InnoDB: Have you moved InnoDB .ibd files" + " around without using the\n" + "InnoDB: commands DISCARD TABLESPACE and" + " IMPORT TABLESPACE?\n" + "InnoDB: Please refer to\n" + "InnoDB: http://dev.mysql.com/doc/refman/5.1/en/" + "innodb-troubleshooting.html\n" + "InnoDB: for how to resolve the issue.\n", + (ulong) space_id, (ulong) space_flags, + (ulong) id, (ulong) flags); + + ret = FALSE; + + goto func_exit; + } + +skip_check: + success = fil_space_create(filepath, space_id, flags, FIL_TABLESPACE); + + if (!success) { + goto func_exit; + } + + /* We do not measure the size of the file, that is why we pass the 0 + below */ + + fil_node_create(filepath, 0, space_id, FALSE); +func_exit: + os_file_close(file); + mem_free(filepath); + + return(ret); +} + +#ifdef UNIV_HOTBACKUP +/*********************************************************************** +Allocates a file name for an old version of a single-table tablespace. +The string must be freed by caller with mem_free()! */ +static +char* +fil_make_ibbackup_old_name( +/*=======================*/ + /* out, own: file name */ + const char* name) /* in: original file name */ +{ + static const char suffix[] = "_ibbackup_old_vers_"; + ulint len = strlen(name); + char* path = mem_alloc(len + (15 + sizeof suffix)); + + memcpy(path, name, len); + memcpy(path + len, suffix, (sizeof suffix) - 1); + ut_sprintf_timestamp_without_extra_chars(path + len + sizeof suffix); + return(path); +} +#endif /* UNIV_HOTBACKUP */ + +/************************************************************************ +Opens an .ibd file and adds the associated single-table tablespace to the +InnoDB fil0fil.c data structures. */ +static +void +fil_load_single_table_tablespace( +/*=============================*/ + const char* dbname, /* in: database name */ + const char* filename) /* in: file name (not a path), + including the .ibd extension */ +{ + os_file_t file; + char* filepath; + ibool success; + byte* buf2; + byte* page; + ulint space_id; + ulint flags; + ulint size_low; + ulint size_high; + ib_int64_t size; +#ifdef UNIV_HOTBACKUP + fil_space_t* space; +#endif + filepath = mem_alloc(strlen(dbname) + strlen(filename) + + strlen(fil_path_to_mysql_datadir) + 3); + + sprintf(filepath, "%s/%s/%s", fil_path_to_mysql_datadir, dbname, + filename); + srv_normalize_path_for_win(filepath); +#ifdef __WIN__ +# ifndef UNIV_HOTBACKUP + /* If lower_case_table_names is 0 or 2, then MySQL allows database + directory names with upper case letters. On Windows, all table and + database names in InnoDB are internally always in lower case. Put the + file path to lower case, so that we are consistent with InnoDB's + internal data dictionary. */ + + dict_casedn_str(filepath); +# endif /* !UNIV_HOTBACKUP */ +#endif + file = os_file_create_simple_no_error_handling( + filepath, OS_FILE_OPEN, OS_FILE_READ_ONLY, &success); + if (!success) { + /* The following call prints an error message */ + os_file_get_last_error(TRUE); + + fprintf(stderr, + "InnoDB: Error: could not open single-table tablespace" + " file\n" + "InnoDB: %s!\n" + "InnoDB: We do not continue the crash recovery," + " because the table may become\n" + "InnoDB: corrupt if we cannot apply the log records" + " in the InnoDB log to it.\n" + "InnoDB: To fix the problem and start mysqld:\n" + "InnoDB: 1) If there is a permission problem" + " in the file and mysqld cannot\n" + "InnoDB: open the file, you should" + " modify the permissions.\n" + "InnoDB: 2) If the table is not needed, or you can" + " restore it from a backup,\n" + "InnoDB: then you can remove the .ibd file," + " and InnoDB will do a normal\n" + "InnoDB: crash recovery and ignore that table.\n" + "InnoDB: 3) If the file system or the" + " disk is broken, and you cannot remove\n" + "InnoDB: the .ibd file, you can set" + " innodb_force_recovery > 0 in my.cnf\n" + "InnoDB: and force InnoDB to continue crash" + " recovery here.\n", filepath); + + mem_free(filepath); + + if (srv_force_recovery > 0) { + fprintf(stderr, + "InnoDB: innodb_force_recovery" + " was set to %lu. Continuing crash recovery\n" + "InnoDB: even though we cannot access" + " the .ibd file of this table.\n", + srv_force_recovery); + return; + } + + exit(1); + } + + success = os_file_get_size(file, &size_low, &size_high); + + if (!success) { + /* The following call prints an error message */ + os_file_get_last_error(TRUE); + + fprintf(stderr, + "InnoDB: Error: could not measure the size" + " of single-table tablespace file\n" + "InnoDB: %s!\n" + "InnoDB: We do not continue crash recovery," + " because the table will become\n" + "InnoDB: corrupt if we cannot apply the log records" + " in the InnoDB log to it.\n" + "InnoDB: To fix the problem and start mysqld:\n" + "InnoDB: 1) If there is a permission problem" + " in the file and mysqld cannot\n" + "InnoDB: access the file, you should" + " modify the permissions.\n" + "InnoDB: 2) If the table is not needed," + " or you can restore it from a backup,\n" + "InnoDB: then you can remove the .ibd file," + " and InnoDB will do a normal\n" + "InnoDB: crash recovery and ignore that table.\n" + "InnoDB: 3) If the file system or the disk is broken," + " and you cannot remove\n" + "InnoDB: the .ibd file, you can set" + " innodb_force_recovery > 0 in my.cnf\n" + "InnoDB: and force InnoDB to continue" + " crash recovery here.\n", filepath); + + os_file_close(file); + mem_free(filepath); + + if (srv_force_recovery > 0) { + fprintf(stderr, + "InnoDB: innodb_force_recovery" + " was set to %lu. Continuing crash recovery\n" + "InnoDB: even though we cannot access" + " the .ibd file of this table.\n", + srv_force_recovery); + return; + } + + exit(1); + } + + /* TODO: What to do in other cases where we cannot access an .ibd + file during a crash recovery? */ + + /* Every .ibd file is created >= 4 pages in size. Smaller files + cannot be ok. */ + + size = (((ib_int64_t)size_high) << 32) + (ib_int64_t)size_low; +#ifndef UNIV_HOTBACKUP + if (size < FIL_IBD_FILE_INITIAL_SIZE * UNIV_PAGE_SIZE) { + fprintf(stderr, + "InnoDB: Error: the size of single-table tablespace" + " file %s\n" + "InnoDB: is only %lu %lu, should be at least %lu!", + filepath, + (ulong) size_high, + (ulong) size_low, (ulong) (4 * UNIV_PAGE_SIZE)); + os_file_close(file); + mem_free(filepath); + + return; + } +#endif + /* Read the first page of the tablespace if the size big enough */ + + buf2 = ut_malloc(2 * UNIV_PAGE_SIZE); + /* Align the memory for file i/o if we might have O_DIRECT set */ + page = ut_align(buf2, UNIV_PAGE_SIZE); + + if (size >= FIL_IBD_FILE_INITIAL_SIZE * UNIV_PAGE_SIZE) { + success = os_file_read(file, page, 0, 0, UNIV_PAGE_SIZE); + + /* We have to read the tablespace id from the file */ + + space_id = fsp_header_get_space_id(page); + flags = fsp_header_get_flags(page); + } else { + space_id = ULINT_UNDEFINED; + flags = 0; + } + +#ifndef UNIV_HOTBACKUP + if (space_id == ULINT_UNDEFINED || space_id == 0) { + fprintf(stderr, + "InnoDB: Error: tablespace id %lu in file %s" + " is not sensible\n", + (ulong) space_id, + filepath); + goto func_exit; + } +#else + if (space_id == ULINT_UNDEFINED || space_id == 0) { + char* new_path; + + fprintf(stderr, + "InnoDB: Renaming tablespace %s of id %lu,\n" + "InnoDB: to %s_ibbackup_old_vers_<timestamp>\n" + "InnoDB: because its size %lld is too small" + " (< 4 pages 16 kB each),\n" + "InnoDB: or the space id in the file header" + " is not sensible.\n" + "InnoDB: This can happen in an ibbackup run," + " and is not dangerous.\n", + filepath, space_id, filepath, size); + os_file_close(file); + + new_path = fil_make_ibbackup_old_name(filepath); + ut_a(os_file_rename(filepath, new_path)); + + ut_free(buf2); + mem_free(filepath); + mem_free(new_path); + + return; + } + + /* A backup may contain the same space several times, if the space got + renamed at a sensitive time. Since it is enough to have one version of + the space, we rename the file if a space with the same space id + already exists in the tablespace memory cache. We rather rename the + file than delete it, because if there is a bug, we do not want to + destroy valuable data. */ + + mutex_enter(&(fil_system->mutex)); + + space = fil_get_space_for_id_low(space_id); + + if (space) { + char* new_path; + + fprintf(stderr, + "InnoDB: Renaming tablespace %s of id %lu,\n" + "InnoDB: to %s_ibbackup_old_vers_<timestamp>\n" + "InnoDB: because space %s with the same id\n" + "InnoDB: was scanned earlier. This can happen" + " if you have renamed tables\n" + "InnoDB: during an ibbackup run.\n", + filepath, space_id, filepath, + space->name); + os_file_close(file); + + new_path = fil_make_ibbackup_old_name(filepath); + + mutex_exit(&(fil_system->mutex)); + + ut_a(os_file_rename(filepath, new_path)); + + ut_free(buf2); + mem_free(filepath); + mem_free(new_path); + + return; + } + mutex_exit(&(fil_system->mutex)); +#endif + success = fil_space_create(filepath, space_id, flags, FIL_TABLESPACE); + + if (!success) { + + goto func_exit; + } + + /* We do not use the size information we have about the file, because + the rounding formula for extents and pages is somewhat complex; we + let fil_node_open() do that task. */ + + fil_node_create(filepath, 0, space_id, FALSE); +func_exit: + os_file_close(file); + ut_free(buf2); + mem_free(filepath); +} + +/*************************************************************************** +A fault-tolerant function that tries to read the next file name in the +directory. We retry 100 times if os_file_readdir_next_file() returns -1. The +idea is to read as much good data as we can and jump over bad data. */ +static +int +fil_file_readdir_next_file( +/*=======================*/ + /* out: 0 if ok, -1 if error even after the + retries, 1 if at the end of the directory */ + ulint* err, /* out: this is set to DB_ERROR if an error + was encountered, otherwise not changed */ + const char* dirname,/* in: directory name or path */ + os_file_dir_t dir, /* in: directory stream */ + os_file_stat_t* info) /* in/out: buffer where the info is returned */ +{ + ulint i; + int ret; + + for (i = 0; i < 100; i++) { + ret = os_file_readdir_next_file(dirname, dir, info); + + if (ret != -1) { + + return(ret); + } + + fprintf(stderr, + "InnoDB: Error: os_file_readdir_next_file()" + " returned -1 in\n" + "InnoDB: directory %s\n" + "InnoDB: Crash recovery may have failed" + " for some .ibd files!\n", dirname); + + *err = DB_ERROR; + } + + return(-1); +} + +/************************************************************************ +At the server startup, if we need crash recovery, scans the database +directories under the MySQL datadir, looking for .ibd files. Those files are +single-table tablespaces. We need to know the space id in each of them so that +we know into which file we should look to check the contents of a page stored +in the doublewrite buffer, also to know where to apply log records where the +space id is != 0. */ +UNIV_INTERN +ulint +fil_load_single_table_tablespaces(void) +/*===================================*/ + /* out: DB_SUCCESS or error number */ +{ + int ret; + char* dbpath = NULL; + ulint dbpath_len = 100; + os_file_dir_t dir; + os_file_dir_t dbdir; + os_file_stat_t dbinfo; + os_file_stat_t fileinfo; + ulint err = DB_SUCCESS; + + /* The datadir of MySQL is always the default directory of mysqld */ + + dir = os_file_opendir(fil_path_to_mysql_datadir, TRUE); + + if (dir == NULL) { + + return(DB_ERROR); + } + + dbpath = mem_alloc(dbpath_len); + + /* Scan all directories under the datadir. They are the database + directories of MySQL. */ + + ret = fil_file_readdir_next_file(&err, fil_path_to_mysql_datadir, dir, + &dbinfo); + while (ret == 0) { + ulint len; + /* printf("Looking at %s in datadir\n", dbinfo.name); */ + + if (dbinfo.type == OS_FILE_TYPE_FILE + || dbinfo.type == OS_FILE_TYPE_UNKNOWN) { + + goto next_datadir_item; + } + + /* We found a symlink or a directory; try opening it to see + if a symlink is a directory */ + + len = strlen(fil_path_to_mysql_datadir) + + strlen (dbinfo.name) + 2; + if (len > dbpath_len) { + dbpath_len = len; + + if (dbpath) { + mem_free(dbpath); + } + + dbpath = mem_alloc(dbpath_len); + } + sprintf(dbpath, "%s/%s", fil_path_to_mysql_datadir, + dbinfo.name); + srv_normalize_path_for_win(dbpath); + + dbdir = os_file_opendir(dbpath, FALSE); + + if (dbdir != NULL) { + /* printf("Opened dir %s\n", dbinfo.name); */ + + /* We found a database directory; loop through it, + looking for possible .ibd files in it */ + + ret = fil_file_readdir_next_file(&err, dbpath, dbdir, + &fileinfo); + while (ret == 0) { + /* printf( + " Looking at file %s\n", fileinfo.name); */ + + if (fileinfo.type == OS_FILE_TYPE_DIR) { + + goto next_file_item; + } + + /* We found a symlink or a file */ + if (strlen(fileinfo.name) > 4 + && 0 == strcmp(fileinfo.name + + strlen(fileinfo.name) - 4, + ".ibd")) { + /* The name ends in .ibd; try opening + the file */ + fil_load_single_table_tablespace( + dbinfo.name, fileinfo.name); + } +next_file_item: + ret = fil_file_readdir_next_file(&err, + dbpath, dbdir, + &fileinfo); + } + + if (0 != os_file_closedir(dbdir)) { + fputs("InnoDB: Warning: could not" + " close database directory ", stderr); + ut_print_filename(stderr, dbpath); + putc('\n', stderr); + + err = DB_ERROR; + } + } + +next_datadir_item: + ret = fil_file_readdir_next_file(&err, + fil_path_to_mysql_datadir, + dir, &dbinfo); + } + + mem_free(dbpath); + + if (0 != os_file_closedir(dir)) { + fprintf(stderr, + "InnoDB: Error: could not close MySQL datadir\n"); + + return(DB_ERROR); + } + + return(err); +} + +/************************************************************************ +If we need crash recovery, and we have called +fil_load_single_table_tablespaces() and dict_load_single_table_tablespaces(), +we can call this function to print an error message of orphaned .ibd files +for which there is not a data dictionary entry with a matching table name +and space id. */ +UNIV_INTERN +void +fil_print_orphaned_tablespaces(void) +/*================================*/ +{ + fil_system_t* system = fil_system; + fil_space_t* space; + + mutex_enter(&(system->mutex)); + + space = UT_LIST_GET_FIRST(system->space_list); + + while (space) { + if (space->purpose == FIL_TABLESPACE && space->id != 0 + && !space->mark) { + fputs("InnoDB: Warning: tablespace ", stderr); + ut_print_filename(stderr, space->name); + fprintf(stderr, " of id %lu has no matching table in\n" + "InnoDB: the InnoDB data dictionary.\n", + (ulong) space->id); + } + + space = UT_LIST_GET_NEXT(space_list, space); + } + + mutex_exit(&(system->mutex)); +} + +/*********************************************************************** +Returns TRUE if a single-table tablespace does not exist in the memory cache, +or is being deleted there. */ +UNIV_INTERN +ibool +fil_tablespace_deleted_or_being_deleted_in_mem( +/*===========================================*/ + /* out: TRUE if does not exist or is being\ + deleted */ + ulint id, /* in: space id */ + ib_int64_t version)/* in: tablespace_version should be this; if + you pass -1 as the value of this, then this + parameter is ignored */ +{ + fil_system_t* system = fil_system; + fil_space_t* space; + + ut_ad(system); + + mutex_enter(&(system->mutex)); + + space = fil_space_get_by_id(id); + + if (space == NULL || space->is_being_deleted) { + mutex_exit(&(system->mutex)); + + return(TRUE); + } + + if (version != ((ib_int64_t)-1) + && space->tablespace_version != version) { + mutex_exit(&(system->mutex)); + + return(TRUE); + } + + mutex_exit(&(system->mutex)); + + return(FALSE); +} + +/*********************************************************************** +Returns TRUE if a single-table tablespace exists in the memory cache. */ +UNIV_INTERN +ibool +fil_tablespace_exists_in_mem( +/*=========================*/ + /* out: TRUE if exists */ + ulint id) /* in: space id */ +{ + fil_system_t* system = fil_system; + fil_space_t* space; + + ut_ad(system); + + mutex_enter(&(system->mutex)); + + space = fil_space_get_by_id(id); + + if (space == NULL) { + mutex_exit(&(system->mutex)); + + return(FALSE); + } + + mutex_exit(&(system->mutex)); + + return(TRUE); +} + +/*********************************************************************** +Returns TRUE if a matching tablespace exists in the InnoDB tablespace memory +cache. Note that if we have not done a crash recovery at the database startup, +there may be many tablespaces which are not yet in the memory cache. */ +UNIV_INTERN +ibool +fil_space_for_table_exists_in_mem( +/*==============================*/ + /* out: TRUE if a matching tablespace + exists in the memory cache */ + ulint id, /* in: space id */ + const char* name, /* in: table name in the standard + 'databasename/tablename' format or + the dir path to a temp table */ + ibool is_temp, /* in: TRUE if created with CREATE + TEMPORARY TABLE */ + ibool mark_space, /* in: in crash recovery, at database + startup we mark all spaces which have + an associated table in the InnoDB + data dictionary, so that + we can print a warning about orphaned + tablespaces */ + ibool print_error_if_does_not_exist) + /* in: print detailed error + information to the .err log if a + matching tablespace is not found from + memory */ +{ + fil_system_t* system = fil_system; + fil_space_t* namespace; + fil_space_t* space; + char* path; + + ut_ad(system); + + mutex_enter(&(system->mutex)); + + path = fil_make_ibd_name(name, is_temp); + + /* Look if there is a space with the same id */ + + space = fil_space_get_by_id(id); + + /* Look if there is a space with the same name; the name is the + directory path from the datadir to the file */ + + namespace = fil_space_get_by_name(path); + if (space && space == namespace) { + /* Found */ + + if (mark_space) { + space->mark = TRUE; + } + + mem_free(path); + mutex_exit(&(system->mutex)); + + return(TRUE); + } + + if (!print_error_if_does_not_exist) { + + mem_free(path); + mutex_exit(&(system->mutex)); + + return(FALSE); + } + + if (space == NULL) { + if (namespace == NULL) { + ut_print_timestamp(stderr); + fputs(" InnoDB: Error: table ", stderr); + ut_print_filename(stderr, name); + fprintf(stderr, "\n" + "InnoDB: in InnoDB data dictionary" + " has tablespace id %lu,\n" + "InnoDB: but tablespace with that id" + " or name does not exist. Have\n" + "InnoDB: you deleted or moved .ibd files?\n" + "InnoDB: This may also be a table created with" + " CREATE TEMPORARY TABLE\n" + "InnoDB: whose .ibd and .frm files" + " MySQL automatically removed, but the\n" + "InnoDB: table still exists in the" + " InnoDB internal data dictionary.\n", + (ulong) id); + } else { + ut_print_timestamp(stderr); + fputs(" InnoDB: Error: table ", stderr); + ut_print_filename(stderr, name); + fprintf(stderr, "\n" + "InnoDB: in InnoDB data dictionary has" + " tablespace id %lu,\n" + "InnoDB: but a tablespace with that id" + " does not exist. There is\n" + "InnoDB: a tablespace of name %s and id %lu," + " though. Have\n" + "InnoDB: you deleted or moved .ibd files?\n", + (ulong) id, namespace->name, + (ulong) namespace->id); + } +error_exit: + fputs("InnoDB: Please refer to\n" + "InnoDB: http://dev.mysql.com/doc/refman/5.1/en/" + "innodb-troubleshooting.html\n" + "InnoDB: for how to resolve the issue.\n", stderr); + + mem_free(path); + mutex_exit(&(system->mutex)); + + return(FALSE); + } + + if (0 != strcmp(space->name, path)) { + ut_print_timestamp(stderr); + fputs(" InnoDB: Error: table ", stderr); + ut_print_filename(stderr, name); + fprintf(stderr, "\n" + "InnoDB: in InnoDB data dictionary has" + " tablespace id %lu,\n" + "InnoDB: but the tablespace with that id" + " has name %s.\n" + "InnoDB: Have you deleted or moved .ibd files?\n", + (ulong) id, space->name); + + if (namespace != NULL) { + fputs("InnoDB: There is a tablespace" + " with the right name\n" + "InnoDB: ", stderr); + ut_print_filename(stderr, namespace->name); + fprintf(stderr, ", but its id is %lu.\n", + (ulong) namespace->id); + } + + goto error_exit; + } + + mem_free(path); + mutex_exit(&(system->mutex)); + + return(FALSE); +} + +/*********************************************************************** +Checks if a single-table tablespace for a given table name exists in the +tablespace memory cache. */ +static +ulint +fil_get_space_id_for_table( +/*=======================*/ + /* out: space id, ULINT_UNDEFINED if not + found */ + const char* name) /* in: table name in the standard + 'databasename/tablename' format */ +{ + fil_system_t* system = fil_system; + fil_space_t* namespace; + ulint id = ULINT_UNDEFINED; + char* path; + + ut_ad(system); + + mutex_enter(&(system->mutex)); + + path = fil_make_ibd_name(name, FALSE); + + /* Look if there is a space with the same name; the name is the + directory path to the file */ + + namespace = fil_space_get_by_name(path); + + if (namespace) { + id = namespace->id; + } + + mem_free(path); + + mutex_exit(&(system->mutex)); + + return(id); +} + +/************************************************************************** +Tries to extend a data file so that it would accommodate the number of pages +given. The tablespace must be cached in the memory cache. If the space is big +enough already, does nothing. */ +UNIV_INTERN +ibool +fil_extend_space_to_desired_size( +/*=============================*/ + /* out: TRUE if success */ + ulint* actual_size, /* out: size of the space after extension; + if we ran out of disk space this may be lower + than the desired size */ + ulint space_id, /* in: space id */ + ulint size_after_extend)/* in: desired size in pages after the + extension; if the current space size is bigger + than this already, the function does nothing */ +{ + fil_system_t* system = fil_system; + fil_node_t* node; + fil_space_t* space; + byte* buf2; + byte* buf; + ulint buf_size; + ulint start_page_no; + ulint file_start_page_no; + ulint offset_high; + ulint offset_low; + ulint page_size; + ibool success = TRUE; + + fil_mutex_enter_and_prepare_for_io(space_id); + + space = fil_space_get_by_id(space_id); + ut_a(space); + + if (space->size >= size_after_extend) { + /* Space already big enough */ + + *actual_size = space->size; + + mutex_exit(&(system->mutex)); + + return(TRUE); + } + + page_size = dict_table_flags_to_zip_size(space->flags); + if (!page_size) { + page_size = UNIV_PAGE_SIZE; + } + + node = UT_LIST_GET_LAST(space->chain); + + fil_node_prepare_for_io(node, system, space); + + start_page_no = space->size; + file_start_page_no = space->size - node->size; + + /* Extend at most 64 pages at a time */ + buf_size = ut_min(64, size_after_extend - start_page_no) * page_size; + buf2 = mem_alloc(buf_size + page_size); + buf = ut_align(buf2, page_size); + + memset(buf, 0, buf_size); + + while (start_page_no < size_after_extend) { + ulint n_pages = ut_min(buf_size / page_size, + size_after_extend - start_page_no); + + offset_high = (start_page_no - file_start_page_no) + / (4096 * ((1024 * 1024) / page_size)); + offset_low = ((start_page_no - file_start_page_no) + % (4096 * ((1024 * 1024) / page_size))) + * page_size; +#ifdef UNIV_HOTBACKUP + success = os_file_write(node->name, node->handle, buf, + offset_low, offset_high, + page_size * n_pages); +#else + success = os_aio(OS_FILE_WRITE, OS_AIO_SYNC, + node->name, node->handle, buf, + offset_low, offset_high, + page_size * n_pages, + NULL, NULL); +#endif + if (success) { + node->size += n_pages; + space->size += n_pages; + + os_has_said_disk_full = FALSE; + } else { + /* Let us measure the size of the file to determine + how much we were able to extend it */ + + n_pages = ((ulint) + (os_file_get_size_as_iblonglong( + node->handle) + / page_size)) - node->size; + + node->size += n_pages; + space->size += n_pages; + + break; + } + + start_page_no += n_pages; + } + + mem_free(buf2); + + fil_node_complete_io(node, system, OS_FILE_WRITE); + + *actual_size = space->size; + +#ifndef UNIV_HOTBACKUP + if (space_id == 0) { + ulint pages_per_mb = (1024 * 1024) / page_size; + + /* Keep the last data file size info up to date, rounded to + full megabytes */ + + srv_data_file_sizes[srv_n_data_files - 1] + = (node->size / pages_per_mb) * pages_per_mb; + } +#endif /* !UNIV_HOTBACKUP */ + + /* + printf("Extended %s to %lu, actual size %lu pages\n", space->name, + size_after_extend, *actual_size); */ + mutex_exit(&(system->mutex)); + + fil_flush(space_id); + + return(success); +} + +#ifdef UNIV_HOTBACKUP +/************************************************************************ +Extends all tablespaces to the size stored in the space header. During the +ibbackup --apply-log phase we extended the spaces on-demand so that log records +could be applied, but that may have left spaces still too small compared to +the size stored in the space header. */ +UNIV_INTERN +void +fil_extend_tablespaces_to_stored_len(void) +/*======================================*/ +{ + fil_system_t* system = fil_system; + fil_space_t* space; + byte* buf; + ulint actual_size; + ulint size_in_header; + ulint error; + ibool success; + + buf = mem_alloc(UNIV_PAGE_SIZE); + + mutex_enter(&(system->mutex)); + + space = UT_LIST_GET_FIRST(system->space_list); + + while (space) { + ut_a(space->purpose == FIL_TABLESPACE); + + mutex_exit(&(system->mutex)); /* no need to protect with a + mutex, because this is a + single-threaded operation */ + error = fil_read(TRUE, space->id, space->zip_size, + 0, 0, UNIV_PAGE_SIZE, buf, NULL); + ut_a(error == DB_SUCCESS); + + size_in_header = fsp_get_size_low(buf); + + success = fil_extend_space_to_desired_size( + &actual_size, space->id, size_in_header); + if (!success) { + fprintf(stderr, + "InnoDB: Error: could not extend the" + " tablespace of %s\n" + "InnoDB: to the size stored in header," + " %lu pages;\n" + "InnoDB: size after extension %lu pages\n" + "InnoDB: Check that you have free disk space" + " and retry!\n", + space->name, size_in_header, actual_size); + exit(1); + } + + mutex_enter(&(system->mutex)); + + space = UT_LIST_GET_NEXT(space_list, space); + } + + mutex_exit(&(system->mutex)); + + mem_free(buf); +} +#endif + +/*========== RESERVE FREE EXTENTS (for a B-tree split, for example) ===*/ + +/*********************************************************************** +Tries to reserve free extents in a file space. */ +UNIV_INTERN +ibool +fil_space_reserve_free_extents( +/*===========================*/ + /* out: TRUE if succeed */ + ulint id, /* in: space id */ + ulint n_free_now, /* in: number of free extents now */ + ulint n_to_reserve) /* in: how many one wants to reserve */ +{ + fil_system_t* system = fil_system; + fil_space_t* space; + ibool success; + + ut_ad(system); + + mutex_enter(&(system->mutex)); + + space = fil_space_get_by_id(id); + + ut_a(space); + + if (space->n_reserved_extents + n_to_reserve > n_free_now) { + success = FALSE; + } else { + space->n_reserved_extents += n_to_reserve; + success = TRUE; + } + + mutex_exit(&(system->mutex)); + + return(success); +} + +/*********************************************************************** +Releases free extents in a file space. */ +UNIV_INTERN +void +fil_space_release_free_extents( +/*===========================*/ + ulint id, /* in: space id */ + ulint n_reserved) /* in: how many one reserved */ +{ + fil_system_t* system = fil_system; + fil_space_t* space; + + ut_ad(system); + + mutex_enter(&(system->mutex)); + + space = fil_space_get_by_id(id); + + ut_a(space); + ut_a(space->n_reserved_extents >= n_reserved); + + space->n_reserved_extents -= n_reserved; + + mutex_exit(&(system->mutex)); +} + +/*********************************************************************** +Gets the number of reserved extents. If the database is silent, this number +should be zero. */ +UNIV_INTERN +ulint +fil_space_get_n_reserved_extents( +/*=============================*/ + ulint id) /* in: space id */ +{ + fil_system_t* system = fil_system; + fil_space_t* space; + ulint n; + + ut_ad(system); + + mutex_enter(&(system->mutex)); + + space = fil_space_get_by_id(id); + + ut_a(space); + + n = space->n_reserved_extents; + + mutex_exit(&(system->mutex)); + + return(n); +} + +/*============================ FILE I/O ================================*/ + +/************************************************************************ +NOTE: you must call fil_mutex_enter_and_prepare_for_io() first! + +Prepares a file node for i/o. Opens the file if it is closed. Updates the +pending i/o's field in the node and the system appropriately. Takes the node +off the LRU list if it is in the LRU list. The caller must hold the fil_sys +mutex. */ +static +void +fil_node_prepare_for_io( +/*====================*/ + fil_node_t* node, /* in: file node */ + fil_system_t* system, /* in: tablespace memory cache */ + fil_space_t* space) /* in: space */ +{ + ut_ad(node && system && space); + ut_ad(mutex_own(&(system->mutex))); + + if (system->n_open > system->max_n_open + 5) { + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: Warning: open files %lu" + " exceeds the limit %lu\n", + (ulong) system->n_open, + (ulong) system->max_n_open); + } + + if (node->open == FALSE) { + /* File is closed: open it */ + ut_a(node->n_pending == 0); + + fil_node_open_file(node, system, space); + } + + if (node->n_pending == 0 && space->purpose == FIL_TABLESPACE + && space->id != 0) { + /* The node is in the LRU list, remove it */ + + ut_a(UT_LIST_GET_LEN(system->LRU) > 0); + + UT_LIST_REMOVE(LRU, system->LRU, node); + } + + node->n_pending++; +} + +/************************************************************************ +Updates the data structures when an i/o operation finishes. Updates the +pending i/o's field in the node appropriately. */ +static +void +fil_node_complete_io( +/*=================*/ + fil_node_t* node, /* in: file node */ + fil_system_t* system, /* in: tablespace memory cache */ + ulint type) /* in: OS_FILE_WRITE or OS_FILE_READ; marks + the node as modified if + type == OS_FILE_WRITE */ +{ + ut_ad(node); + ut_ad(system); + ut_ad(mutex_own(&(system->mutex))); + + ut_a(node->n_pending > 0); + + node->n_pending--; + + if (type == OS_FILE_WRITE) { + system->modification_counter++; + node->modification_counter = system->modification_counter; + + if (!node->space->is_in_unflushed_spaces) { + + node->space->is_in_unflushed_spaces = TRUE; + UT_LIST_ADD_FIRST(unflushed_spaces, + system->unflushed_spaces, + node->space); + } + } + + if (node->n_pending == 0 && node->space->purpose == FIL_TABLESPACE + && node->space->id != 0) { + /* The node must be put back to the LRU list */ + UT_LIST_ADD_FIRST(LRU, system->LRU, node); + } +} + +/************************************************************************ +Report information about an invalid page access. */ +static +void +fil_report_invalid_page_access( +/*===========================*/ + ulint block_offset, /* in: block offset */ + ulint space_id, /* in: space id */ + const char* space_name, /* in: space name */ + ulint byte_offset, /* in: byte offset */ + ulint len, /* in: I/O length */ + ulint type) /* in: I/O type */ +{ + fprintf(stderr, + "InnoDB: Error: trying to access page number %lu" + " in space %lu,\n" + "InnoDB: space name %s,\n" + "InnoDB: which is outside the tablespace bounds.\n" + "InnoDB: Byte offset %lu, len %lu, i/o type %lu.\n" + "InnoDB: If you get this error at mysqld startup," + " please check that\n" + "InnoDB: your my.cnf matches the ibdata files" + " that you have in the\n" + "InnoDB: MySQL server.\n", + (ulong) block_offset, (ulong) space_id, space_name, + (ulong) byte_offset, (ulong) len, (ulong) type); +} + +/************************************************************************ +Reads or writes data. This operation is asynchronous (aio). */ +UNIV_INTERN +ulint +fil_io( +/*===*/ + /* out: DB_SUCCESS, or DB_TABLESPACE_DELETED + if we are trying to do i/o on a tablespace + which does not exist */ + ulint type, /* in: OS_FILE_READ or OS_FILE_WRITE, + ORed to OS_FILE_LOG, if a log i/o + and ORed to OS_AIO_SIMULATED_WAKE_LATER + if simulated aio and we want to post a + batch of i/os; NOTE that a simulated batch + may introduce hidden chances of deadlocks, + because i/os are not actually handled until + all have been posted: use with great + caution! */ + ibool sync, /* in: TRUE if synchronous aio is desired */ + ulint space_id, /* in: space id */ + ulint zip_size, /* in: compressed page size in bytes; + 0 for uncompressed pages */ + ulint block_offset, /* in: offset in number of blocks */ + ulint byte_offset, /* in: remainder of offset in bytes; in + aio this must be divisible by the OS block + size */ + ulint len, /* in: how many bytes to read or write; this + must not cross a file boundary; in aio this + must be a block size multiple */ + void* buf, /* in/out: buffer where to store read data + or from where to write; in aio this must be + appropriately aligned */ + void* message) /* in: message for aio handler if non-sync + aio used, else ignored */ +{ + fil_system_t* system = fil_system; + ulint mode; + fil_space_t* space; + fil_node_t* node; + ulint offset_high; + ulint offset_low; + ibool ret; + ulint is_log; + ulint wake_later; + + is_log = type & OS_FILE_LOG; + type = type & ~OS_FILE_LOG; + + wake_later = type & OS_AIO_SIMULATED_WAKE_LATER; + type = type & ~OS_AIO_SIMULATED_WAKE_LATER; + + ut_ad(byte_offset < UNIV_PAGE_SIZE); + ut_ad(!zip_size || !byte_offset); + ut_ad(ut_is_2pow(zip_size)); + ut_ad(buf); + ut_ad(len > 0); +#if (1 << UNIV_PAGE_SIZE_SHIFT) != UNIV_PAGE_SIZE +# error "(1 << UNIV_PAGE_SIZE_SHIFT) != UNIV_PAGE_SIZE" +#endif + ut_ad(fil_validate()); +#ifndef UNIV_LOG_DEBUG + /* ibuf bitmap pages must be read in the sync aio mode: */ + ut_ad(recv_no_ibuf_operations || (type == OS_FILE_WRITE) + || !ibuf_bitmap_page(zip_size, block_offset) + || sync || is_log); + ut_ad(!ibuf_inside() || is_log || (type == OS_FILE_WRITE) + || ibuf_page(space_id, zip_size, block_offset, NULL)); +#endif + if (sync) { + mode = OS_AIO_SYNC; + } else if (is_log) { + mode = OS_AIO_LOG; + } else if (type == OS_FILE_READ + && !recv_no_ibuf_operations + && ibuf_page(space_id, zip_size, block_offset, NULL)) { + mode = OS_AIO_IBUF; + } else { + mode = OS_AIO_NORMAL; + } + + if (type == OS_FILE_READ) { + srv_data_read+= len; + } else if (type == OS_FILE_WRITE) { + srv_data_written+= len; + } + + /* Reserve the fil_system mutex and make sure that we can open at + least one file while holding it, if the file is not already open */ + + fil_mutex_enter_and_prepare_for_io(space_id); + + space = fil_space_get_by_id(space_id); + + if (!space) { + mutex_exit(&(system->mutex)); + + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: Error: trying to do i/o" + " to a tablespace which does not exist.\n" + "InnoDB: i/o type %lu, space id %lu," + " page no. %lu, i/o length %lu bytes\n", + (ulong) type, (ulong) space_id, (ulong) block_offset, + (ulong) len); + + return(DB_TABLESPACE_DELETED); + } + + ut_ad((mode != OS_AIO_IBUF) || (space->purpose == FIL_TABLESPACE)); + + node = UT_LIST_GET_FIRST(space->chain); + + for (;;) { + if (UNIV_UNLIKELY(node == NULL)) { + fil_report_invalid_page_access( + block_offset, space_id, space->name, + byte_offset, len, type); + + ut_error; + } + + if (space->id != 0 && node->size == 0) { + /* We do not know the size of a single-table tablespace + before we open the file */ + + break; + } + + if (node->size > block_offset) { + /* Found! */ + break; + } else { + block_offset -= node->size; + node = UT_LIST_GET_NEXT(chain, node); + } + } + + /* Open file if closed */ + fil_node_prepare_for_io(node, system, space); + + /* Check that at least the start offset is within the bounds of a + single-table tablespace */ + if (UNIV_UNLIKELY(node->size <= block_offset) + && space->id != 0 && space->purpose == FIL_TABLESPACE) { + + fil_report_invalid_page_access( + block_offset, space_id, space->name, byte_offset, + len, type); + + ut_error; + } + + /* Now we have made the changes in the data structures of system */ + mutex_exit(&(system->mutex)); + + /* Calculate the low 32 bits and the high 32 bits of the file offset */ + + if (!zip_size) { + offset_high = (block_offset >> (32 - UNIV_PAGE_SIZE_SHIFT)); + offset_low = ((block_offset << UNIV_PAGE_SIZE_SHIFT) + & 0xFFFFFFFFUL) + byte_offset; + + ut_a(node->size - block_offset + >= ((byte_offset + len + (UNIV_PAGE_SIZE - 1)) + / UNIV_PAGE_SIZE)); + } else { + ulint zip_size_shift; + switch (zip_size) { + case 1024: zip_size_shift = 10; break; + case 2048: zip_size_shift = 11; break; + case 4096: zip_size_shift = 12; break; + case 8192: zip_size_shift = 13; break; + case 16384: zip_size_shift = 14; break; + default: ut_error; + } + offset_high = block_offset >> (32 - zip_size_shift); + offset_low = (block_offset << zip_size_shift & 0xFFFFFFFFUL) + + byte_offset; + ut_a(node->size - block_offset + >= (len + (zip_size - 1)) / zip_size); + } + + /* Do aio */ + + ut_a(byte_offset % OS_FILE_LOG_BLOCK_SIZE == 0); + ut_a((len % OS_FILE_LOG_BLOCK_SIZE) == 0); + +#ifdef UNIV_HOTBACKUP + /* In ibbackup do normal i/o, not aio */ + if (type == OS_FILE_READ) { + ret = os_file_read(node->handle, buf, offset_low, offset_high, + len); + } else { + ret = os_file_write(node->name, node->handle, buf, + offset_low, offset_high, len); + } +#else + /* Queue the aio request */ + ret = os_aio(type, mode | wake_later, node->name, node->handle, buf, + offset_low, offset_high, len, node, message); +#endif + ut_a(ret); + + if (mode == OS_AIO_SYNC) { + /* The i/o operation is already completed when we return from + os_aio: */ + + mutex_enter(&(system->mutex)); + + fil_node_complete_io(node, system, type); + + mutex_exit(&(system->mutex)); + + ut_ad(fil_validate()); + } + + return(DB_SUCCESS); +} + +/************************************************************************** +Waits for an aio operation to complete. This function is used to write the +handler for completed requests. The aio array of pending requests is divided +into segments (see os0file.c for more info). The thread specifies which +segment it wants to wait for. */ +UNIV_INTERN +void +fil_aio_wait( +/*=========*/ + ulint segment) /* in: the number of the segment in the aio + array to wait for */ +{ + fil_system_t* system = fil_system; + ibool ret; + fil_node_t* fil_node; + void* message; + ulint type; + + ut_ad(fil_validate()); + + if (os_aio_use_native_aio) { + srv_set_io_thread_op_info(segment, "native aio handle"); +#ifdef WIN_ASYNC_IO + ret = os_aio_windows_handle(segment, 0, &fil_node, + &message, &type); +#else + ret = 0; /* Eliminate compiler warning */ + ut_error; +#endif + } else { + srv_set_io_thread_op_info(segment, "simulated aio handle"); + + ret = os_aio_simulated_handle(segment, &fil_node, + &message, &type); + } + + ut_a(ret); + + srv_set_io_thread_op_info(segment, "complete io for fil node"); + + mutex_enter(&(system->mutex)); + + fil_node_complete_io(fil_node, fil_system, type); + + mutex_exit(&(system->mutex)); + + ut_ad(fil_validate()); + + /* Do the i/o handling */ + /* IMPORTANT: since i/o handling for reads will read also the insert + buffer in tablespace 0, you have to be very careful not to introduce + deadlocks in the i/o system. We keep tablespace 0 data files always + open, and use a special i/o thread to serve insert buffer requests. */ + + if (fil_node->space->purpose == FIL_TABLESPACE) { + srv_set_io_thread_op_info(segment, "complete io for buf page"); + buf_page_io_complete(message); + } else { + srv_set_io_thread_op_info(segment, "complete io for log"); + log_io_complete(message); + } +} + +/************************************************************************** +Flushes to disk possible writes cached by the OS. If the space does not exist +or is being dropped, does not do anything. */ +UNIV_INTERN +void +fil_flush( +/*======*/ + ulint space_id) /* in: file space id (this can be a group of + log files or a tablespace of the database) */ +{ + fil_system_t* system = fil_system; + fil_space_t* space; + fil_node_t* node; + os_file_t file; + ib_int64_t old_mod_counter; + + mutex_enter(&(system->mutex)); + + space = fil_space_get_by_id(space_id); + + if (!space || space->is_being_deleted) { + mutex_exit(&(system->mutex)); + + return; + } + + space->n_pending_flushes++; /* prevent dropping of the space while + we are flushing */ + node = UT_LIST_GET_FIRST(space->chain); + + while (node) { + if (node->modification_counter > node->flush_counter) { + ut_a(node->open); + + /* We want to flush the changes at least up to + old_mod_counter */ + old_mod_counter = node->modification_counter; + + if (space->purpose == FIL_TABLESPACE) { + fil_n_pending_tablespace_flushes++; + } else { + fil_n_pending_log_flushes++; + fil_n_log_flushes++; + } +#ifdef __WIN__ + if (node->is_raw_disk) { + + goto skip_flush; + } +#endif +retry: + if (node->n_pending_flushes > 0) { + /* We want to avoid calling os_file_flush() on + the file twice at the same time, because we do + not know what bugs OS's may contain in file + i/o; sleep for a while */ + + mutex_exit(&(system->mutex)); + + os_thread_sleep(20000); + + mutex_enter(&(system->mutex)); + + if (node->flush_counter >= old_mod_counter) { + + goto skip_flush; + } + + goto retry; + } + + ut_a(node->open); + file = node->handle; + node->n_pending_flushes++; + + mutex_exit(&(system->mutex)); + + /* fprintf(stderr, "Flushing to file %s\n", + node->name); */ + + os_file_flush(file); + + mutex_enter(&(system->mutex)); + + node->n_pending_flushes--; +skip_flush: + if (node->flush_counter < old_mod_counter) { + node->flush_counter = old_mod_counter; + + if (space->is_in_unflushed_spaces + && fil_space_is_flushed(space)) { + + space->is_in_unflushed_spaces = FALSE; + + UT_LIST_REMOVE( + unflushed_spaces, + system->unflushed_spaces, + space); + } + } + + if (space->purpose == FIL_TABLESPACE) { + fil_n_pending_tablespace_flushes--; + } else { + fil_n_pending_log_flushes--; + } + } + + node = UT_LIST_GET_NEXT(chain, node); + } + + space->n_pending_flushes--; + + mutex_exit(&(system->mutex)); +} + +/************************************************************************** +Flushes to disk the writes in file spaces of the given type possibly cached by +the OS. */ +UNIV_INTERN +void +fil_flush_file_spaces( +/*==================*/ + ulint purpose) /* in: FIL_TABLESPACE, FIL_LOG */ +{ + fil_system_t* system = fil_system; + fil_space_t* space; + ulint* space_ids; + ulint n_space_ids; + ulint i; + + mutex_enter(&(system->mutex)); + + n_space_ids = UT_LIST_GET_LEN(system->unflushed_spaces); + if (n_space_ids == 0) { + + mutex_exit(&system->mutex); + return; + } + + /* Assemble a list of space ids to flush. Previously, we + traversed system->unflushed_spaces and called UT_LIST_GET_NEXT() + on a space that was just removed from the list by fil_flush(). + Thus, the space could be dropped and the memory overwritten. */ + space_ids = mem_alloc(n_space_ids * sizeof *space_ids); + + n_space_ids = 0; + + for (space = UT_LIST_GET_FIRST(system->unflushed_spaces); + space; + space = UT_LIST_GET_NEXT(unflushed_spaces, space)) { + + if (space->purpose == purpose && !space->is_being_deleted) { + + space_ids[n_space_ids++] = space->id; + } + } + + mutex_exit(&system->mutex); + + /* Flush the spaces. It will not hurt to call fil_flush() on + a non-existing space id. */ + for (i = 0; i < n_space_ids; i++) { + + fil_flush(space_ids[i]); + } + + mem_free(space_ids); +} + +/********************************************************************** +Checks the consistency of the tablespace cache. */ +UNIV_INTERN +ibool +fil_validate(void) +/*==============*/ + /* out: TRUE if ok */ +{ + fil_system_t* system = fil_system; + fil_space_t* space; + fil_node_t* fil_node; + ulint n_open = 0; + ulint i; + + mutex_enter(&(system->mutex)); + + /* Look for spaces in the hash table */ + + for (i = 0; i < hash_get_n_cells(system->spaces); i++) { + + space = HASH_GET_FIRST(system->spaces, i); + + while (space != NULL) { + UT_LIST_VALIDATE(chain, fil_node_t, space->chain); + + fil_node = UT_LIST_GET_FIRST(space->chain); + + while (fil_node != NULL) { + if (fil_node->n_pending > 0) { + ut_a(fil_node->open); + } + + if (fil_node->open) { + n_open++; + } + fil_node = UT_LIST_GET_NEXT(chain, fil_node); + } + space = HASH_GET_NEXT(hash, space); + } + } + + ut_a(system->n_open == n_open); + + UT_LIST_VALIDATE(LRU, fil_node_t, system->LRU); + + fil_node = UT_LIST_GET_FIRST(system->LRU); + + while (fil_node != NULL) { + ut_a(fil_node->n_pending == 0); + ut_a(fil_node->open); + ut_a(fil_node->space->purpose == FIL_TABLESPACE); + ut_a(fil_node->space->id != 0); + + fil_node = UT_LIST_GET_NEXT(LRU, fil_node); + } + + mutex_exit(&(system->mutex)); + + return(TRUE); +} + +/************************************************************************ +Returns TRUE if file address is undefined. */ +UNIV_INTERN +ibool +fil_addr_is_null( +/*=============*/ + /* out: TRUE if undefined */ + fil_addr_t addr) /* in: address */ +{ + return(addr.page == FIL_NULL); +} + +/************************************************************************ +Accessor functions for a file page */ +UNIV_INTERN +ulint +fil_page_get_prev(const byte* page) +{ + return(mach_read_from_4(page + FIL_PAGE_PREV)); +} + +UNIV_INTERN +ulint +fil_page_get_next(const byte* page) +{ + return(mach_read_from_4(page + FIL_PAGE_NEXT)); +} + +/************************************************************************* +Sets the file page type. */ +UNIV_INTERN +void +fil_page_set_type( +/*==============*/ + byte* page, /* in: file page */ + ulint type) /* in: type */ +{ + ut_ad(page); + + mach_write_to_2(page + FIL_PAGE_TYPE, type); +} + +/************************************************************************* +Gets the file page type. */ +UNIV_INTERN +ulint +fil_page_get_type( +/*==============*/ + /* out: type; NOTE that if the type + has not been written to page, the return value + not defined */ + const byte* page) /* in: file page */ +{ + ut_ad(page); + + return(mach_read_from_2(page + FIL_PAGE_TYPE)); +} + +/************************************************************************* +Return local hash table informations. */ + +ulint +fil_system_hash_cells(void) +/*=======================*/ +{ + if (fil_system) { + return (fil_system->spaces->n_cells + + fil_system->name_hash->n_cells); + } else { + return 0; + } +} + +ulint +fil_system_hash_nodes(void) +/*=======================*/ +{ + if (fil_system) { + return (UT_LIST_GET_LEN(fil_system->space_list) + * (sizeof(fil_space_t) + MEM_BLOCK_HEADER_SIZE)); + } else { + return 0; + } +} === added directory 'storage/xtradb/fsp' === added file 'storage/xtradb/fsp/fsp0fsp.c' --- a/storage/xtradb/fsp/fsp0fsp.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/fsp/fsp0fsp.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,4284 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/********************************************************************** +File space management + +Created 11/29/1995 Heikki Tuuri +***********************************************************************/ + +#include "fsp0fsp.h" + +#ifdef UNIV_NONINL +#include "fsp0fsp.ic" +#endif + +#include "buf0buf.h" +#include "fil0fil.h" +#include "sync0sync.h" +#include "mtr0log.h" +#include "fut0fut.h" +#include "ut0byte.h" +#include "srv0srv.h" +#include "page0zip.h" +#include "ibuf0ibuf.h" +#include "btr0btr.h" +#include "btr0sea.h" +#include "dict0boot.h" +#include "dict0mem.h" +#include "log0log.h" + + +#define FSP_HEADER_OFFSET FIL_PAGE_DATA /* Offset of the space header + within a file page */ + +/* The data structures in files are defined just as byte strings in C */ +typedef byte fsp_header_t; +typedef byte xdes_t; + +/* SPACE HEADER + ============ + +File space header data structure: this data structure is contained in the +first page of a space. The space for this header is reserved in every extent +descriptor page, but used only in the first. */ + +/*-------------------------------------*/ +#define FSP_SPACE_ID 0 /* space id */ +#define FSP_NOT_USED 4 /* this field contained a value up to + which we know that the modifications + in the database have been flushed to + the file space; not used now */ +#define FSP_SIZE 8 /* Current size of the space in + pages */ +#define FSP_FREE_LIMIT 12 /* Minimum page number for which the + free list has not been initialized: + the pages >= this limit are, by + definition, free; note that in a + single-table tablespace where size + < 64 pages, this number is 64, i.e., + we have initialized the space + about the first extent, but have not + physically allocted those pages to the + file */ +#define FSP_SPACE_FLAGS 16 /* table->flags & ~DICT_TF_COMPACT */ +#define FSP_FRAG_N_USED 20 /* number of used pages in the + FSP_FREE_FRAG list */ +#define FSP_FREE 24 /* list of free extents */ +#define FSP_FREE_FRAG (24 + FLST_BASE_NODE_SIZE) + /* list of partially free extents not + belonging to any segment */ +#define FSP_FULL_FRAG (24 + 2 * FLST_BASE_NODE_SIZE) + /* list of full extents not belonging + to any segment */ +#define FSP_SEG_ID (24 + 3 * FLST_BASE_NODE_SIZE) + /* 8 bytes which give the first unused + segment id */ +#define FSP_SEG_INODES_FULL (32 + 3 * FLST_BASE_NODE_SIZE) + /* list of pages containing segment + headers, where all the segment inode + slots are reserved */ +#define FSP_SEG_INODES_FREE (32 + 4 * FLST_BASE_NODE_SIZE) + /* list of pages containing segment + headers, where not all the segment + header slots are reserved */ +/*-------------------------------------*/ +/* File space header size */ +#define FSP_HEADER_SIZE (32 + 5 * FLST_BASE_NODE_SIZE) + +#define FSP_FREE_ADD 4 /* this many free extents are added + to the free list from above + FSP_FREE_LIMIT at a time */ + +/* FILE SEGMENT INODE + ================== + +Segment inode which is created for each segment in a tablespace. NOTE: in +purge we assume that a segment having only one currently used page can be +freed in a few steps, so that the freeing cannot fill the file buffer with +bufferfixed file pages. */ + +typedef byte fseg_inode_t; + +#define FSEG_INODE_PAGE_NODE FSEG_PAGE_DATA + /* the list node for linking + segment inode pages */ + +#define FSEG_ARR_OFFSET (FSEG_PAGE_DATA + FLST_NODE_SIZE) +/*-------------------------------------*/ +#define FSEG_ID 0 /* 8 bytes of segment id: if this is + ut_dulint_zero, it means that the + header is unused */ +#define FSEG_NOT_FULL_N_USED 8 + /* number of used segment pages in + the FSEG_NOT_FULL list */ +#define FSEG_FREE 12 + /* list of free extents of this + segment */ +#define FSEG_NOT_FULL (12 + FLST_BASE_NODE_SIZE) + /* list of partially free extents */ +#define FSEG_FULL (12 + 2 * FLST_BASE_NODE_SIZE) + /* list of full extents */ +#define FSEG_MAGIC_N (12 + 3 * FLST_BASE_NODE_SIZE) + /* magic number used in debugging */ +#define FSEG_FRAG_ARR (16 + 3 * FLST_BASE_NODE_SIZE) + /* array of individual pages + belonging to this segment in fsp + fragment extent lists */ +#define FSEG_FRAG_ARR_N_SLOTS (FSP_EXTENT_SIZE / 2) + /* number of slots in the array for + the fragment pages */ +#define FSEG_FRAG_SLOT_SIZE 4 /* a fragment page slot contains its + page number within space, FIL_NULL + means that the slot is not in use */ +/*-------------------------------------*/ +#define FSEG_INODE_SIZE \ + (16 + 3 * FLST_BASE_NODE_SIZE \ + + FSEG_FRAG_ARR_N_SLOTS * FSEG_FRAG_SLOT_SIZE) + +#define FSP_SEG_INODES_PER_PAGE(zip_size) \ + (((zip_size ? zip_size : UNIV_PAGE_SIZE) \ + - FSEG_ARR_OFFSET - 10) / FSEG_INODE_SIZE) + /* Number of segment inodes which fit on a + single page */ + +#define FSEG_MAGIC_N_VALUE 97937874 + +#define FSEG_FILLFACTOR 8 /* If this value is x, then if + the number of unused but reserved + pages in a segment is less than + reserved pages * 1/x, and there are + at least FSEG_FRAG_LIMIT used pages, + then we allow a new empty extent to + be added to the segment in + fseg_alloc_free_page. Otherwise, we + use unused pages of the segment. */ + +#define FSEG_FRAG_LIMIT FSEG_FRAG_ARR_N_SLOTS + /* If the segment has >= this many + used pages, it may be expanded by + allocating extents to the segment; + until that only individual fragment + pages are allocated from the space */ + +#define FSEG_FREE_LIST_LIMIT 40 /* If the reserved size of a segment + is at least this many extents, we + allow extents to be put to the free + list of the extent: at most + FSEG_FREE_LIST_MAX_LEN many */ +#define FSEG_FREE_LIST_MAX_LEN 4 + + +/* EXTENT DESCRIPTOR + ================= + +File extent descriptor data structure: contains bits to tell which pages in +the extent are free and which contain old tuple version to clean. */ + +/*-------------------------------------*/ +#define XDES_ID 0 /* The identifier of the segment + to which this extent belongs */ +#define XDES_FLST_NODE 8 /* The list node data structure + for the descriptors */ +#define XDES_STATE (FLST_NODE_SIZE + 8) + /* contains state information + of the extent */ +#define XDES_BITMAP (FLST_NODE_SIZE + 12) + /* Descriptor bitmap of the pages + in the extent */ +/*-------------------------------------*/ + +#define XDES_BITS_PER_PAGE 2 /* How many bits are there per page */ +#define XDES_FREE_BIT 0 /* Index of the bit which tells if + the page is free */ +#define XDES_CLEAN_BIT 1 /* NOTE: currently not used! + Index of the bit which tells if + there are old versions of tuples + on the page */ +/* States of a descriptor */ +#define XDES_FREE 1 /* extent is in free list of space */ +#define XDES_FREE_FRAG 2 /* extent is in free fragment list of + space */ +#define XDES_FULL_FRAG 3 /* extent is in full fragment list of + space */ +#define XDES_FSEG 4 /* extent belongs to a segment */ + +/* File extent data structure size in bytes. */ +#define XDES_SIZE \ + (XDES_BITMAP + UT_BITS_IN_BYTES(FSP_EXTENT_SIZE * XDES_BITS_PER_PAGE)) + +/* Offset of the descriptor array on a descriptor page */ +#define XDES_ARR_OFFSET (FSP_HEADER_OFFSET + FSP_HEADER_SIZE) + +/************************************************************************** +Returns an extent to the free list of a space. */ +static +void +fsp_free_extent( +/*============*/ + ulint space, /* in: space id */ + ulint zip_size,/* in: compressed page size in bytes + or 0 for uncompressed pages */ + ulint page, /* in: page offset in the extent */ + mtr_t* mtr); /* in: mtr */ +/************************************************************************** +Frees an extent of a segment to the space free list. */ +static +void +fseg_free_extent( +/*=============*/ + fseg_inode_t* seg_inode, /* in: segment inode */ + ulint space, /* in: space id */ + ulint zip_size,/* in: compressed page size in bytes + or 0 for uncompressed pages */ + ulint page, /* in: page offset in the extent */ + mtr_t* mtr); /* in: mtr handle */ +/************************************************************************** +Calculates the number of pages reserved by a segment, and how +many pages are currently used. */ +static +ulint +fseg_n_reserved_pages_low( +/*======================*/ + /* out: number of reserved pages */ + fseg_inode_t* header, /* in: segment inode */ + ulint* used, /* out: number of pages used (<= reserved) */ + mtr_t* mtr); /* in: mtr handle */ +/************************************************************************ +Marks a page used. The page must reside within the extents of the given +segment. */ +static +void +fseg_mark_page_used( +/*================*/ + fseg_inode_t* seg_inode,/* in: segment inode */ + ulint space, /* in: space id */ + ulint zip_size,/* in: compressed page size in bytes + or 0 for uncompressed pages */ + ulint page, /* in: page offset */ + mtr_t* mtr); /* in: mtr */ +/************************************************************************** +Returns the first extent descriptor for a segment. We think of the extent +lists of the segment catenated in the order FSEG_FULL -> FSEG_NOT_FULL +-> FSEG_FREE. */ +static +xdes_t* +fseg_get_first_extent( +/*==================*/ + /* out: the first extent descriptor, or NULL if + none */ + fseg_inode_t* inode, /* in: segment inode */ + ulint space, /* in: space id */ + ulint zip_size,/* in: compressed page size in bytes + or 0 for uncompressed pages */ + mtr_t* mtr); /* in: mtr */ +/************************************************************************** +Puts new extents to the free list if +there are free extents above the free limit. If an extent happens +to contain an extent descriptor page, the extent is put to +the FSP_FREE_FRAG list with the page marked as used. */ +static +void +fsp_fill_free_list( +/*===============*/ + ibool init_space, /* in: TRUE if this is a single-table + tablespace and we are only initing + the tablespace's first extent + descriptor page and ibuf bitmap page; + then we do not allocate more extents */ + ulint space, /* in: space */ + fsp_header_t* header, /* in: space header */ + mtr_t* mtr); /* in: mtr */ +/************************************************************************** +Allocates a single free page from a segment. This function implements +the intelligent allocation strategy which tries to minimize file space +fragmentation. */ +static +ulint +fseg_alloc_free_page_low( +/*=====================*/ + /* out: the allocated page number, FIL_NULL + if no page could be allocated */ + ulint space, /* in: space */ + ulint zip_size,/* in: compressed page size in bytes + or 0 for uncompressed pages */ + fseg_inode_t* seg_inode, /* in: segment inode */ + ulint hint, /* in: hint of which page would be desirable */ + byte direction, /* in: if the new page is needed because + of an index page split, and records are + inserted there in order, into which + direction they go alphabetically: FSP_DOWN, + FSP_UP, FSP_NO_DIR */ + mtr_t* mtr); /* in: mtr handle */ + + +/************************************************************************** +Reads the file space size stored in the header page. */ +UNIV_INTERN +ulint +fsp_get_size_low( +/*=============*/ + /* out: tablespace size stored in the space header */ + page_t* page) /* in: header page (page 0 in the tablespace) */ +{ + return(mach_read_from_4(page + FSP_HEADER_OFFSET + FSP_SIZE)); +} + +/************************************************************************** +Gets a pointer to the space header and x-locks its page. */ +UNIV_INLINE +fsp_header_t* +fsp_get_space_header( +/*=================*/ + /* out: pointer to the space header, page x-locked */ + ulint id, /* in: space id */ + ulint zip_size,/* in: compressed page size in bytes + or 0 for uncompressed pages */ + mtr_t* mtr) /* in: mtr */ +{ + buf_block_t* block; + fsp_header_t* header; + + ut_ad(ut_is_2pow(zip_size)); + ut_ad(zip_size <= UNIV_PAGE_SIZE); + ut_ad(!zip_size || zip_size >= PAGE_ZIP_MIN_SIZE); + ut_ad(id || !zip_size); + + block = buf_page_get(id, zip_size, 0, RW_X_LATCH, mtr); + header = FSP_HEADER_OFFSET + buf_block_get_frame(block); + buf_block_dbg_add_level(block, SYNC_FSP_PAGE); + + ut_ad(id == mach_read_from_4(FSP_SPACE_ID + header)); + ut_ad(zip_size == dict_table_flags_to_zip_size( + mach_read_from_4(FSP_SPACE_FLAGS + header))); + return(header); +} + +/************************************************************************** +Gets a descriptor bit of a page. */ +UNIV_INLINE +ibool +xdes_get_bit( +/*=========*/ + /* out: TRUE if free */ + xdes_t* descr, /* in: descriptor */ + ulint bit, /* in: XDES_FREE_BIT or XDES_CLEAN_BIT */ + ulint offset, /* in: page offset within extent: + 0 ... FSP_EXTENT_SIZE - 1 */ + mtr_t* mtr) /* in: mtr */ +{ + ulint index; + ulint byte_index; + ulint bit_index; + + ut_ad(mtr_memo_contains_page(mtr, descr, MTR_MEMO_PAGE_X_FIX)); + ut_ad((bit == XDES_FREE_BIT) || (bit == XDES_CLEAN_BIT)); + ut_ad(offset < FSP_EXTENT_SIZE); + + index = bit + XDES_BITS_PER_PAGE * offset; + + byte_index = index / 8; + bit_index = index % 8; + + return(ut_bit_get_nth(mtr_read_ulint(descr + XDES_BITMAP + byte_index, + MLOG_1BYTE, mtr), + bit_index)); +} + +/************************************************************************** +Sets a descriptor bit of a page. */ +UNIV_INLINE +void +xdes_set_bit( +/*=========*/ + xdes_t* descr, /* in: descriptor */ + ulint bit, /* in: XDES_FREE_BIT or XDES_CLEAN_BIT */ + ulint offset, /* in: page offset within extent: + 0 ... FSP_EXTENT_SIZE - 1 */ + ibool val, /* in: bit value */ + mtr_t* mtr) /* in: mtr */ +{ + ulint index; + ulint byte_index; + ulint bit_index; + ulint descr_byte; + + ut_ad(mtr_memo_contains_page(mtr, descr, MTR_MEMO_PAGE_X_FIX)); + ut_ad((bit == XDES_FREE_BIT) || (bit == XDES_CLEAN_BIT)); + ut_ad(offset < FSP_EXTENT_SIZE); + + index = bit + XDES_BITS_PER_PAGE * offset; + + byte_index = index / 8; + bit_index = index % 8; + + descr_byte = mtr_read_ulint(descr + XDES_BITMAP + byte_index, + MLOG_1BYTE, mtr); + descr_byte = ut_bit_set_nth(descr_byte, bit_index, val); + + mlog_write_ulint(descr + XDES_BITMAP + byte_index, descr_byte, + MLOG_1BYTE, mtr); +} + +/************************************************************************** +Looks for a descriptor bit having the desired value. Starts from hint +and scans upward; at the end of the extent the search is wrapped to +the start of the extent. */ +UNIV_INLINE +ulint +xdes_find_bit( +/*==========*/ + /* out: bit index of the bit, ULINT_UNDEFINED if not + found */ + xdes_t* descr, /* in: descriptor */ + ulint bit, /* in: XDES_FREE_BIT or XDES_CLEAN_BIT */ + ibool val, /* in: desired bit value */ + ulint hint, /* in: hint of which bit position would be desirable */ + mtr_t* mtr) /* in: mtr */ +{ + ulint i; + + ut_ad(descr && mtr); + ut_ad(val <= TRUE); + ut_ad(hint < FSP_EXTENT_SIZE); + ut_ad(mtr_memo_contains_page(mtr, descr, MTR_MEMO_PAGE_X_FIX)); + for (i = hint; i < FSP_EXTENT_SIZE; i++) { + if (val == xdes_get_bit(descr, bit, i, mtr)) { + + return(i); + } + } + + for (i = 0; i < hint; i++) { + if (val == xdes_get_bit(descr, bit, i, mtr)) { + + return(i); + } + } + + return(ULINT_UNDEFINED); +} + +/************************************************************************** +Looks for a descriptor bit having the desired value. Scans the extent in +a direction opposite to xdes_find_bit. */ +UNIV_INLINE +ulint +xdes_find_bit_downward( +/*===================*/ + /* out: bit index of the bit, ULINT_UNDEFINED if not + found */ + xdes_t* descr, /* in: descriptor */ + ulint bit, /* in: XDES_FREE_BIT or XDES_CLEAN_BIT */ + ibool val, /* in: desired bit value */ + ulint hint, /* in: hint of which bit position would be desirable */ + mtr_t* mtr) /* in: mtr */ +{ + ulint i; + + ut_ad(descr && mtr); + ut_ad(val <= TRUE); + ut_ad(hint < FSP_EXTENT_SIZE); + ut_ad(mtr_memo_contains_page(mtr, descr, MTR_MEMO_PAGE_X_FIX)); + for (i = hint + 1; i > 0; i--) { + if (val == xdes_get_bit(descr, bit, i - 1, mtr)) { + + return(i - 1); + } + } + + for (i = FSP_EXTENT_SIZE - 1; i > hint; i--) { + if (val == xdes_get_bit(descr, bit, i, mtr)) { + + return(i); + } + } + + return(ULINT_UNDEFINED); +} + +/************************************************************************** +Returns the number of used pages in a descriptor. */ +UNIV_INLINE +ulint +xdes_get_n_used( +/*============*/ + /* out: number of pages used */ + xdes_t* descr, /* in: descriptor */ + mtr_t* mtr) /* in: mtr */ +{ + ulint i; + ulint count = 0; + + ut_ad(descr && mtr); + ut_ad(mtr_memo_contains_page(mtr, descr, MTR_MEMO_PAGE_X_FIX)); + for (i = 0; i < FSP_EXTENT_SIZE; i++) { + if (FALSE == xdes_get_bit(descr, XDES_FREE_BIT, i, mtr)) { + count++; + } + } + + return(count); +} + +/************************************************************************** +Returns true if extent contains no used pages. */ +UNIV_INLINE +ibool +xdes_is_free( +/*=========*/ + /* out: TRUE if totally free */ + xdes_t* descr, /* in: descriptor */ + mtr_t* mtr) /* in: mtr */ +{ + if (0 == xdes_get_n_used(descr, mtr)) { + + return(TRUE); + } + + return(FALSE); +} + +/************************************************************************** +Returns true if extent contains no free pages. */ +UNIV_INLINE +ibool +xdes_is_full( +/*=========*/ + /* out: TRUE if full */ + xdes_t* descr, /* in: descriptor */ + mtr_t* mtr) /* in: mtr */ +{ + if (FSP_EXTENT_SIZE == xdes_get_n_used(descr, mtr)) { + + return(TRUE); + } + + return(FALSE); +} + +/************************************************************************** +Sets the state of an xdes. */ +UNIV_INLINE +void +xdes_set_state( +/*===========*/ + xdes_t* descr, /* in: descriptor */ + ulint state, /* in: state to set */ + mtr_t* mtr) /* in: mtr handle */ +{ + ut_ad(descr && mtr); + ut_ad(state >= XDES_FREE); + ut_ad(state <= XDES_FSEG); + ut_ad(mtr_memo_contains_page(mtr, descr, MTR_MEMO_PAGE_X_FIX)); + + mlog_write_ulint(descr + XDES_STATE, state, MLOG_4BYTES, mtr); +} + +/************************************************************************** +Gets the state of an xdes. */ +UNIV_INLINE +ulint +xdes_get_state( +/*===========*/ + /* out: state */ + xdes_t* descr, /* in: descriptor */ + mtr_t* mtr) /* in: mtr handle */ +{ + ulint state; + + ut_ad(descr && mtr); + ut_ad(mtr_memo_contains_page(mtr, descr, MTR_MEMO_PAGE_X_FIX)); + + state = mtr_read_ulint(descr + XDES_STATE, MLOG_4BYTES, mtr); + ut_ad(state - 1 < XDES_FSEG); + return(state); +} + +/************************************************************************** +Inits an extent descriptor to the free and clean state. */ +UNIV_INLINE +void +xdes_init( +/*======*/ + xdes_t* descr, /* in: descriptor */ + mtr_t* mtr) /* in: mtr */ +{ + ulint i; + + ut_ad(descr && mtr); + ut_ad(mtr_memo_contains_page(mtr, descr, MTR_MEMO_PAGE_X_FIX)); + ut_ad((XDES_SIZE - XDES_BITMAP) % 4 == 0); + + for (i = XDES_BITMAP; i < XDES_SIZE; i += 4) { + mlog_write_ulint(descr + i, 0xFFFFFFFFUL, MLOG_4BYTES, mtr); + } + + xdes_set_state(descr, XDES_FREE, mtr); +} + +/************************************************************************ +Calculates the page where the descriptor of a page resides. */ +UNIV_INLINE +ulint +xdes_calc_descriptor_page( +/*======================*/ + /* out: descriptor page offset */ + ulint zip_size, /* in: compressed page size in bytes; + 0 for uncompressed pages */ + ulint offset) /* in: page offset */ +{ +#if UNIV_PAGE_SIZE <= XDES_ARR_OFFSET \ + + (UNIV_PAGE_SIZE / FSP_EXTENT_SIZE) * XDES_SIZE +# error +#endif +#if PAGE_ZIP_MIN_SIZE <= XDES_ARR_OFFSET \ + + (PAGE_ZIP_MIN_SIZE / FSP_EXTENT_SIZE) * XDES_SIZE +# error +#endif + ut_ad(ut_is_2pow(zip_size)); + + if (!zip_size) { + return(ut_2pow_round(offset, UNIV_PAGE_SIZE)); + } else { + ut_ad(zip_size > XDES_ARR_OFFSET + + (zip_size / FSP_EXTENT_SIZE) * XDES_SIZE); + return(ut_2pow_round(offset, zip_size)); + } +} + +/************************************************************************ +Calculates the descriptor index within a descriptor page. */ +UNIV_INLINE +ulint +xdes_calc_descriptor_index( +/*=======================*/ + /* out: descriptor index */ + ulint zip_size, /* in: compressed page size in bytes; + 0 for uncompressed pages */ + ulint offset) /* in: page offset */ +{ + ut_ad(ut_is_2pow(zip_size)); + + if (!zip_size) { + return(ut_2pow_remainder(offset, UNIV_PAGE_SIZE) + / FSP_EXTENT_SIZE); + } else { + return(ut_2pow_remainder(offset, zip_size) / FSP_EXTENT_SIZE); + } +} + +/************************************************************************ +Gets pointer to a the extent descriptor of a page. The page where the extent +descriptor resides is x-locked. If the page offset is equal to the free limit +of the space, adds new extents from above the free limit to the space free +list, if not free limit == space size. This adding is necessary to make the +descriptor defined, as they are uninitialized above the free limit. */ +UNIV_INLINE +xdes_t* +xdes_get_descriptor_with_space_hdr( +/*===============================*/ + /* out: pointer to the extent descriptor, + NULL if the page does not exist in the + space or if offset > free limit */ + fsp_header_t* sp_header,/* in: space header, x-latched */ + ulint space, /* in: space id */ + ulint offset, /* in: page offset; + if equal to the free limit, + we try to add new extents to + the space free list */ + mtr_t* mtr) /* in: mtr handle */ +{ + ulint limit; + ulint size; + ulint zip_size; + ulint descr_page_no; + page_t* descr_page; + + ut_ad(mtr); + ut_ad(mtr_memo_contains(mtr, fil_space_get_latch(space, NULL), + MTR_MEMO_X_LOCK)); + ut_ad(mtr_memo_contains_page(mtr, sp_header, MTR_MEMO_PAGE_S_FIX) + || mtr_memo_contains_page(mtr, sp_header, MTR_MEMO_PAGE_X_FIX)); + ut_ad(page_offset(sp_header) == FSP_HEADER_OFFSET); + /* Read free limit and space size */ + limit = mach_read_from_4(sp_header + FSP_FREE_LIMIT); + size = mach_read_from_4(sp_header + FSP_SIZE); + zip_size = dict_table_flags_to_zip_size( + mach_read_from_4(sp_header + FSP_SPACE_FLAGS)); + + /* If offset is >= size or > limit, return NULL */ + + if ((offset >= size) || (offset > limit)) { + + return(NULL); + } + + /* If offset is == limit, fill free list of the space. */ + + if (offset == limit) { + fsp_fill_free_list(FALSE, space, sp_header, mtr); + } + + descr_page_no = xdes_calc_descriptor_page(zip_size, offset); + + if (descr_page_no == 0) { + /* It is on the space header page */ + + descr_page = page_align(sp_header); + } else { + buf_block_t* block; + + block = buf_page_get(space, zip_size, descr_page_no, + RW_X_LATCH, mtr); + buf_block_dbg_add_level(block, SYNC_FSP_PAGE); + + descr_page = buf_block_get_frame(block); + } + + return(descr_page + XDES_ARR_OFFSET + + XDES_SIZE * xdes_calc_descriptor_index(zip_size, offset)); +} + +/************************************************************************ +Gets pointer to a the extent descriptor of a page. The page where the +extent descriptor resides is x-locked. If the page offset is equal to +the free limit of the space, adds new extents from above the free limit +to the space free list, if not free limit == space size. This adding +is necessary to make the descriptor defined, as they are uninitialized +above the free limit. */ +static +xdes_t* +xdes_get_descriptor( +/*================*/ + /* out: pointer to the extent descriptor, NULL if the + page does not exist in the space or if offset > free + limit */ + ulint space, /* in: space id */ + ulint zip_size,/* in: compressed page size in bytes + or 0 for uncompressed pages */ + ulint offset, /* in: page offset; if equal to the free limit, + we try to add new extents to the space free list */ + mtr_t* mtr) /* in: mtr handle */ +{ + buf_block_t* block; + fsp_header_t* sp_header; + + block = buf_page_get(space, zip_size, 0, RW_X_LATCH, mtr); + buf_block_dbg_add_level(block, SYNC_FSP_PAGE); + + sp_header = FSP_HEADER_OFFSET + buf_block_get_frame(block); + return(xdes_get_descriptor_with_space_hdr(sp_header, space, offset, + mtr)); +} + +/************************************************************************ +Gets pointer to a the extent descriptor if the file address +of the descriptor list node is known. The page where the +extent descriptor resides is x-locked. */ +UNIV_INLINE +xdes_t* +xdes_lst_get_descriptor( +/*====================*/ + /* out: pointer to the extent descriptor */ + ulint space, /* in: space id */ + ulint zip_size,/* in: compressed page size in bytes + or 0 for uncompressed pages */ + fil_addr_t lst_node,/* in: file address of the list node + contained in the descriptor */ + mtr_t* mtr) /* in: mtr handle */ +{ + xdes_t* descr; + + ut_ad(mtr); + ut_ad(mtr_memo_contains(mtr, fil_space_get_latch(space, NULL), + MTR_MEMO_X_LOCK)); + descr = fut_get_ptr(space, zip_size, lst_node, RW_X_LATCH, mtr) + - XDES_FLST_NODE; + + return(descr); +} + +/************************************************************************ +Returns page offset of the first page in extent described by a descriptor. */ +UNIV_INLINE +ulint +xdes_get_offset( +/*============*/ + /* out: offset of the first page in extent */ + xdes_t* descr) /* in: extent descriptor */ +{ + ut_ad(descr); + + return(page_get_page_no(page_align(descr)) + + ((page_offset(descr) - XDES_ARR_OFFSET) / XDES_SIZE) + * FSP_EXTENT_SIZE); +} + +/*************************************************************** +Inits a file page whose prior contents should be ignored. */ +static +void +fsp_init_file_page_low( +/*===================*/ + buf_block_t* block) /* in: pointer to a page */ +{ + page_t* page = buf_block_get_frame(block); + page_zip_des_t* page_zip= buf_block_get_page_zip(block); + + block->check_index_page_at_flush = FALSE; + + if (UNIV_LIKELY_NULL(page_zip)) { + memset(page, 0, UNIV_PAGE_SIZE); + memset(page_zip->data, 0, page_zip_get_size(page_zip)); + mach_write_to_4(page + FIL_PAGE_OFFSET, + buf_block_get_page_no(block)); + mach_write_to_4(page + + FIL_PAGE_ARCH_LOG_NO_OR_SPACE_ID, + buf_block_get_space(block)); + memcpy(page_zip->data + FIL_PAGE_OFFSET, + page + FIL_PAGE_OFFSET, 4); + memcpy(page_zip->data + FIL_PAGE_ARCH_LOG_NO_OR_SPACE_ID, + page + FIL_PAGE_ARCH_LOG_NO_OR_SPACE_ID, 4); + return; + } + +#ifdef UNIV_BASIC_LOG_DEBUG + memset(page, 0xff, UNIV_PAGE_SIZE); +#endif + mach_write_to_4(page + FIL_PAGE_OFFSET, buf_block_get_page_no(block)); + memset(page + FIL_PAGE_LSN, 0, 8); + mach_write_to_4(page + FIL_PAGE_ARCH_LOG_NO_OR_SPACE_ID, + buf_block_get_space(block)); + memset(page + UNIV_PAGE_SIZE - FIL_PAGE_END_LSN_OLD_CHKSUM, 0, 8); +} + +/*************************************************************** +Inits a file page whose prior contents should be ignored. */ +static +void +fsp_init_file_page( +/*===============*/ + buf_block_t* block, /* in: pointer to a page */ + mtr_t* mtr) /* in: mtr */ +{ + fsp_init_file_page_low(block); + + mlog_write_initial_log_record(buf_block_get_frame(block), + MLOG_INIT_FILE_PAGE, mtr); +} + +/*************************************************************** +Parses a redo log record of a file page init. */ +UNIV_INTERN +byte* +fsp_parse_init_file_page( +/*=====================*/ + /* out: end of log record or NULL */ + byte* ptr, /* in: buffer */ + byte* end_ptr __attribute__((unused)), /* in: buffer end */ + buf_block_t* block) /* in: block or NULL */ +{ + ut_ad(ptr && end_ptr); + + if (block) { + fsp_init_file_page_low(block); + } + + return(ptr); +} + +/************************************************************************** +Initializes the fsp system. */ +UNIV_INTERN +void +fsp_init(void) +/*==========*/ +{ + /* Does nothing at the moment */ +} + +/************************************************************************** +Writes the space id and compressed page size to a tablespace header. +This function is used past the buffer pool when we in fil0fil.c create +a new single-table tablespace. */ +UNIV_INTERN +void +fsp_header_init_fields( +/*===================*/ + page_t* page, /* in/out: first page in the space */ + ulint space_id, /* in: space id */ + ulint flags) /* in: tablespace flags (FSP_SPACE_FLAGS): + 0, or table->flags if newer than COMPACT */ +{ + /* The tablespace flags (FSP_SPACE_FLAGS) should be 0 for + ROW_FORMAT=COMPACT (table->flags == DICT_TF_COMPACT) and + ROW_FORMAT=REDUNDANT (table->flags == 0). For any other + format, the tablespace flags should equal table->flags. */ + ut_a(flags != DICT_TF_COMPACT); + + mach_write_to_4(FSP_HEADER_OFFSET + FSP_SPACE_ID + page, + space_id); + mach_write_to_4(FSP_HEADER_OFFSET + FSP_SPACE_FLAGS + page, + flags); +} + +/************************************************************************** +Initializes the space header of a new created space and creates also the +insert buffer tree root if space == 0. */ +UNIV_INTERN +void +fsp_header_init( +/*============*/ + ulint space, /* in: space id */ + ulint size, /* in: current size in blocks */ + mtr_t* mtr) /* in: mini-transaction handle */ +{ + fsp_header_t* header; + buf_block_t* block; + page_t* page; + ulint flags; + ulint zip_size; + + ut_ad(mtr); + + mtr_x_lock(fil_space_get_latch(space, &flags), mtr); + + zip_size = dict_table_flags_to_zip_size(flags); + block = buf_page_create(space, 0, zip_size, mtr); + buf_page_get(space, zip_size, 0, RW_X_LATCH, mtr); + buf_block_dbg_add_level(block, SYNC_FSP_PAGE); + + /* The prior contents of the file page should be ignored */ + + fsp_init_file_page(block, mtr); + page = buf_block_get_frame(block); + + mlog_write_ulint(page + FIL_PAGE_TYPE, FIL_PAGE_TYPE_FSP_HDR, + MLOG_2BYTES, mtr); + + header = FSP_HEADER_OFFSET + page; + + mlog_write_ulint(header + FSP_SPACE_ID, space, MLOG_4BYTES, mtr); + mlog_write_ulint(header + FSP_NOT_USED, 0, MLOG_4BYTES, mtr); + + mlog_write_ulint(header + FSP_SIZE, size, MLOG_4BYTES, mtr); + mlog_write_ulint(header + FSP_FREE_LIMIT, 0, MLOG_4BYTES, mtr); + mlog_write_ulint(header + FSP_SPACE_FLAGS, flags, + MLOG_4BYTES, mtr); + mlog_write_ulint(header + FSP_FRAG_N_USED, 0, MLOG_4BYTES, mtr); + + flst_init(header + FSP_FREE, mtr); + flst_init(header + FSP_FREE_FRAG, mtr); + flst_init(header + FSP_FULL_FRAG, mtr); + flst_init(header + FSP_SEG_INODES_FULL, mtr); + flst_init(header + FSP_SEG_INODES_FREE, mtr); + + mlog_write_dulint(header + FSP_SEG_ID, ut_dulint_create(0, 1), mtr); + if (space == 0) { + fsp_fill_free_list(FALSE, space, header, mtr); + btr_create(DICT_CLUSTERED | DICT_UNIVERSAL | DICT_IBUF, + 0, 0, ut_dulint_add(DICT_IBUF_ID_MIN, space), + srv_sys->dummy_ind1, mtr); + } else { + fsp_fill_free_list(TRUE, space, header, mtr); + } +} + +/************************************************************************** +Reads the space id from the first page of a tablespace. */ +UNIV_INTERN +ulint +fsp_header_get_space_id( +/*====================*/ + /* out: space id, ULINT UNDEFINED if error */ + const page_t* page) /* in: first page of a tablespace */ +{ + ulint fsp_id; + ulint id; + + fsp_id = mach_read_from_4(FSP_HEADER_OFFSET + page + FSP_SPACE_ID); + + id = mach_read_from_4(page + FIL_PAGE_ARCH_LOG_NO_OR_SPACE_ID); + + if (id != fsp_id) { + fprintf(stderr, + "InnoDB: Error: space id in fsp header %lu," + " but in the page header %lu\n", + (ulong) fsp_id, (ulong) id); + + return(ULINT_UNDEFINED); + } + + return(id); +} + +/************************************************************************** +Reads the space flags from the first page of a tablespace. */ +UNIV_INTERN +ulint +fsp_header_get_flags( +/*=================*/ + /* out: flags */ + const page_t* page) /* in: first page of a tablespace */ +{ + ut_ad(!page_offset(page)); + + return(mach_read_from_4(FSP_HEADER_OFFSET + FSP_SPACE_FLAGS + page)); +} + +/************************************************************************** +Reads the compressed page size from the first page of a tablespace. */ +UNIV_INTERN +ulint +fsp_header_get_zip_size( +/*====================*/ + /* out: compressed page size in bytes, + or 0 if uncompressed */ + const page_t* page) /* in: first page of a tablespace */ +{ + ulint flags = fsp_header_get_flags(page); + + return(dict_table_flags_to_zip_size(flags)); +} + +/************************************************************************** +Increases the space size field of a space. */ +UNIV_INTERN +void +fsp_header_inc_size( +/*================*/ + ulint space, /* in: space id */ + ulint size_inc,/* in: size increment in pages */ + mtr_t* mtr) /* in: mini-transaction handle */ +{ + fsp_header_t* header; + ulint size; + ulint flags; + + ut_ad(mtr); + + mtr_x_lock(fil_space_get_latch(space, &flags), mtr); + + header = fsp_get_space_header(space, + dict_table_flags_to_zip_size(flags), + mtr); + + size = mtr_read_ulint(header + FSP_SIZE, MLOG_4BYTES, mtr); + + mlog_write_ulint(header + FSP_SIZE, size + size_inc, MLOG_4BYTES, + mtr); +} + +/************************************************************************** +Gets the current free limit of the system tablespace. The free limit +means the place of the first page which has never been put to the the +free list for allocation. The space above that address is initialized +to zero. Sets also the global variable log_fsp_current_free_limit. */ +UNIV_INTERN +ulint +fsp_header_get_free_limit(void) +/*===========================*/ + /* out: free limit in megabytes */ +{ + fsp_header_t* header; + ulint limit; + mtr_t mtr; + + mtr_start(&mtr); + + mtr_x_lock(fil_space_get_latch(0, NULL), &mtr); + + header = fsp_get_space_header(0, 0, &mtr); + + limit = mtr_read_ulint(header + FSP_FREE_LIMIT, MLOG_4BYTES, &mtr); + + limit /= ((1024 * 1024) / UNIV_PAGE_SIZE); + + log_fsp_current_free_limit_set_and_checkpoint(limit); + + mtr_commit(&mtr); + + return(limit); +} + +/************************************************************************** +Gets the size of the system tablespace from the tablespace header. If +we do not have an auto-extending data file, this should be equal to +the size of the data files. If there is an auto-extending data file, +this can be smaller. */ +UNIV_INTERN +ulint +fsp_header_get_tablespace_size(void) +/*================================*/ + /* out: size in pages */ +{ + fsp_header_t* header; + ulint size; + mtr_t mtr; + + mtr_start(&mtr); + + mtr_x_lock(fil_space_get_latch(0, NULL), &mtr); + + header = fsp_get_space_header(0, 0, &mtr); + + size = mtr_read_ulint(header + FSP_SIZE, MLOG_4BYTES, &mtr); + + mtr_commit(&mtr); + + return(size); +} + +/*************************************************************************** +Tries to extend a single-table tablespace so that a page would fit in the +data file. */ +static +ibool +fsp_try_extend_data_file_with_pages( +/*================================*/ + /* out: TRUE if success */ + ulint space, /* in: space */ + ulint page_no, /* in: page number */ + fsp_header_t* header, /* in: space header */ + mtr_t* mtr) /* in: mtr */ +{ + ibool success; + ulint actual_size; + ulint size; + + ut_a(space != 0); + + size = mtr_read_ulint(header + FSP_SIZE, MLOG_4BYTES, mtr); + + ut_a(page_no >= size); + + success = fil_extend_space_to_desired_size(&actual_size, space, + page_no + 1); + /* actual_size now has the space size in pages; it may be less than + we wanted if we ran out of disk space */ + + mlog_write_ulint(header + FSP_SIZE, actual_size, MLOG_4BYTES, mtr); + + return(success); +} + +/*************************************************************************** +Tries to extend the last data file of a tablespace if it is auto-extending. */ +static +ibool +fsp_try_extend_data_file( +/*=====================*/ + /* out: FALSE if not auto-extending */ + ulint* actual_increase,/* out: actual increase in pages, where + we measure the tablespace size from + what the header field says; it may be + the actual file size rounded down to + megabyte */ + ulint space, /* in: space */ + fsp_header_t* header, /* in: space header */ + mtr_t* mtr) /* in: mtr */ +{ + ulint size; + ulint zip_size; + ulint new_size; + ulint old_size; + ulint size_increase; + ulint actual_size; + ibool success; + + *actual_increase = 0; + + if (space == 0 && !srv_auto_extend_last_data_file) { + + return(FALSE); + } + + size = mtr_read_ulint(header + FSP_SIZE, MLOG_4BYTES, mtr); + zip_size = dict_table_flags_to_zip_size( + mach_read_from_4(header + FSP_SPACE_FLAGS)); + + old_size = size; + + if (space == 0) { + if (!srv_last_file_size_max) { + size_increase = SRV_AUTO_EXTEND_INCREMENT; + } else { + if (srv_last_file_size_max + < srv_data_file_sizes[srv_n_data_files - 1]) { + + fprintf(stderr, + "InnoDB: Error: Last data file size" + " is %lu, max size allowed %lu\n", + (ulong) srv_data_file_sizes[ + srv_n_data_files - 1], + (ulong) srv_last_file_size_max); + } + + size_increase = srv_last_file_size_max + - srv_data_file_sizes[srv_n_data_files - 1]; + if (size_increase > SRV_AUTO_EXTEND_INCREMENT) { + size_increase = SRV_AUTO_EXTEND_INCREMENT; + } + } + } else { + /* We extend single-table tablespaces first one extent + at a time, but for bigger tablespaces more. It is not + enough to extend always by one extent, because some + extents are frag page extents. */ + ulint extent_size; /* one megabyte, in pages */ + + if (!zip_size) { + extent_size = FSP_EXTENT_SIZE; + } else { + extent_size = FSP_EXTENT_SIZE + * UNIV_PAGE_SIZE / zip_size; + } + + if (size < extent_size) { + /* Let us first extend the file to extent_size */ + success = fsp_try_extend_data_file_with_pages( + space, extent_size - 1, header, mtr); + if (!success) { + new_size = mtr_read_ulint(header + FSP_SIZE, + MLOG_4BYTES, mtr); + + *actual_increase = new_size - old_size; + + return(FALSE); + } + + size = extent_size; + } + + if (size < 32 * extent_size) { + size_increase = extent_size; + } else { + /* Below in fsp_fill_free_list() we assume + that we add at most FSP_FREE_ADD extents at + a time */ + size_increase = FSP_FREE_ADD * extent_size; + } + } + + if (size_increase == 0) { + + return(TRUE); + } + + success = fil_extend_space_to_desired_size(&actual_size, space, + size + size_increase); + /* We ignore any fragments of a full megabyte when storing the size + to the space header */ + + if (!zip_size) { + new_size = ut_calc_align_down(actual_size, + (1024 * 1024) / UNIV_PAGE_SIZE); + } else { + new_size = ut_calc_align_down(actual_size, + (1024 * 1024) / zip_size); + } + mlog_write_ulint(header + FSP_SIZE, new_size, MLOG_4BYTES, mtr); + + *actual_increase = new_size - old_size; + + return(TRUE); +} + +/************************************************************************** +Puts new extents to the free list if there are free extents above the free +limit. If an extent happens to contain an extent descriptor page, the extent +is put to the FSP_FREE_FRAG list with the page marked as used. */ +static +void +fsp_fill_free_list( +/*===============*/ + ibool init_space, /* in: TRUE if this is a single-table + tablespace and we are only initing + the tablespace's first extent + descriptor page and ibuf bitmap page; + then we do not allocate more extents */ + ulint space, /* in: space */ + fsp_header_t* header, /* in: space header */ + mtr_t* mtr) /* in: mtr */ +{ + ulint limit; + ulint size; + ulint zip_size; + xdes_t* descr; + ulint count = 0; + ulint frag_n_used; + ulint actual_increase; + ulint i; + mtr_t ibuf_mtr; + + ut_ad(header && mtr); + ut_ad(page_offset(header) == FSP_HEADER_OFFSET); + + /* Check if we can fill free list from above the free list limit */ + size = mtr_read_ulint(header + FSP_SIZE, MLOG_4BYTES, mtr); + limit = mtr_read_ulint(header + FSP_FREE_LIMIT, MLOG_4BYTES, mtr); + + zip_size = dict_table_flags_to_zip_size( + mach_read_from_4(FSP_SPACE_FLAGS + header)); + ut_a(ut_is_2pow(zip_size)); + ut_a(zip_size <= UNIV_PAGE_SIZE); + ut_a(!zip_size || zip_size >= PAGE_ZIP_MIN_SIZE); + + if (space == 0 && srv_auto_extend_last_data_file + && size < limit + FSP_EXTENT_SIZE * FSP_FREE_ADD) { + + /* Try to increase the last data file size */ + fsp_try_extend_data_file(&actual_increase, space, header, mtr); + size = mtr_read_ulint(header + FSP_SIZE, MLOG_4BYTES, mtr); + } + + if (space != 0 && !init_space + && size < limit + FSP_EXTENT_SIZE * FSP_FREE_ADD) { + + /* Try to increase the .ibd file size */ + fsp_try_extend_data_file(&actual_increase, space, header, mtr); + size = mtr_read_ulint(header + FSP_SIZE, MLOG_4BYTES, mtr); + } + + i = limit; + + while ((init_space && i < 1) + || ((i + FSP_EXTENT_SIZE <= size) && (count < FSP_FREE_ADD))) { + + ibool init_xdes; + if (zip_size) { + init_xdes = ut_2pow_remainder(i, zip_size) == 0; + } else { + init_xdes = ut_2pow_remainder(i, UNIV_PAGE_SIZE) == 0; + } + + mlog_write_ulint(header + FSP_FREE_LIMIT, i + FSP_EXTENT_SIZE, + MLOG_4BYTES, mtr); + + /* Update the free limit info in the log system and make + a checkpoint */ + if (space == 0) { + ut_a(!zip_size); + log_fsp_current_free_limit_set_and_checkpoint( + (i + FSP_EXTENT_SIZE) + / ((1024 * 1024) / UNIV_PAGE_SIZE)); + } + + if (UNIV_UNLIKELY(init_xdes)) { + + buf_block_t* block; + + /* We are going to initialize a new descriptor page + and a new ibuf bitmap page: the prior contents of the + pages should be ignored. */ + + if (i > 0) { + block = buf_page_create( + space, i, zip_size, mtr); + buf_page_get(space, zip_size, i, + RW_X_LATCH, mtr); + buf_block_dbg_add_level(block, + SYNC_FSP_PAGE); + + fsp_init_file_page(block, mtr); + mlog_write_ulint(buf_block_get_frame(block) + + FIL_PAGE_TYPE, + FIL_PAGE_TYPE_XDES, + MLOG_2BYTES, mtr); + } + + /* Initialize the ibuf bitmap page in a separate + mini-transaction because it is low in the latching + order, and we must be able to release its latch + before returning from the fsp routine */ + + mtr_start(&ibuf_mtr); + + block = buf_page_create(space, + i + FSP_IBUF_BITMAP_OFFSET, + zip_size, &ibuf_mtr); + buf_page_get(space, zip_size, + i + FSP_IBUF_BITMAP_OFFSET, + RW_X_LATCH, &ibuf_mtr); + buf_block_dbg_add_level(block, SYNC_FSP_PAGE); + + fsp_init_file_page(block, &ibuf_mtr); + + ibuf_bitmap_page_init(block, &ibuf_mtr); + + mtr_commit(&ibuf_mtr); + } + + descr = xdes_get_descriptor_with_space_hdr(header, space, i, + mtr); + xdes_init(descr, mtr); + +#if UNIV_PAGE_SIZE % FSP_EXTENT_SIZE +# error "UNIV_PAGE_SIZE % FSP_EXTENT_SIZE != 0" +#endif +#if PAGE_ZIP_MIN_SIZE % FSP_EXTENT_SIZE +# error "PAGE_ZIP_MIN_SIZE % FSP_EXTENT_SIZE != 0" +#endif + + if (UNIV_UNLIKELY(init_xdes)) { + + /* The first page in the extent is a descriptor page + and the second is an ibuf bitmap page: mark them + used */ + + xdes_set_bit(descr, XDES_FREE_BIT, 0, FALSE, mtr); + xdes_set_bit(descr, XDES_FREE_BIT, + FSP_IBUF_BITMAP_OFFSET, FALSE, mtr); + xdes_set_state(descr, XDES_FREE_FRAG, mtr); + + flst_add_last(header + FSP_FREE_FRAG, + descr + XDES_FLST_NODE, mtr); + frag_n_used = mtr_read_ulint(header + FSP_FRAG_N_USED, + MLOG_4BYTES, mtr); + mlog_write_ulint(header + FSP_FRAG_N_USED, + frag_n_used + 2, MLOG_4BYTES, mtr); + } else { + flst_add_last(header + FSP_FREE, + descr + XDES_FLST_NODE, mtr); + count++; + } + + i += FSP_EXTENT_SIZE; + } +} + +/************************************************************************** +Allocates a new free extent. */ +static +xdes_t* +fsp_alloc_free_extent( +/*==================*/ + /* out: extent descriptor, NULL if cannot be + allocated */ + ulint space, /* in: space id */ + ulint zip_size,/* in: compressed page size in bytes + or 0 for uncompressed pages */ + ulint hint, /* in: hint of which extent would be desirable: any + page offset in the extent goes; the hint must not + be > FSP_FREE_LIMIT */ + mtr_t* mtr) /* in: mtr */ +{ + fsp_header_t* header; + fil_addr_t first; + xdes_t* descr; + + ut_ad(mtr); + + header = fsp_get_space_header(space, zip_size, mtr); + + descr = xdes_get_descriptor_with_space_hdr(header, space, hint, mtr); + + if (descr && (xdes_get_state(descr, mtr) == XDES_FREE)) { + /* Ok, we can take this extent */ + } else { + /* Take the first extent in the free list */ + first = flst_get_first(header + FSP_FREE, mtr); + + if (fil_addr_is_null(first)) { + fsp_fill_free_list(FALSE, space, header, mtr); + + first = flst_get_first(header + FSP_FREE, mtr); + } + + if (fil_addr_is_null(first)) { + + return(NULL); /* No free extents left */ + } + + descr = xdes_lst_get_descriptor(space, zip_size, first, mtr); + } + + flst_remove(header + FSP_FREE, descr + XDES_FLST_NODE, mtr); + + return(descr); +} + +/************************************************************************** +Allocates a single free page from a space. The page is marked as used. */ +static +ulint +fsp_alloc_free_page( +/*================*/ + /* out: the page offset, FIL_NULL if no page could + be allocated */ + ulint space, /* in: space id */ + ulint zip_size,/* in: compressed page size in bytes + or 0 for uncompressed pages */ + ulint hint, /* in: hint of which page would be desirable */ + mtr_t* mtr) /* in: mtr handle */ +{ + fsp_header_t* header; + fil_addr_t first; + xdes_t* descr; + buf_block_t* block; + ulint free; + ulint frag_n_used; + ulint page_no; + ulint space_size; + ibool success; + + ut_ad(mtr); + + header = fsp_get_space_header(space, zip_size, mtr); + + /* Get the hinted descriptor */ + descr = xdes_get_descriptor_with_space_hdr(header, space, hint, mtr); + + if (descr && (xdes_get_state(descr, mtr) == XDES_FREE_FRAG)) { + /* Ok, we can take this extent */ + } else { + /* Else take the first extent in free_frag list */ + first = flst_get_first(header + FSP_FREE_FRAG, mtr); + + if (fil_addr_is_null(first)) { + /* There are no partially full fragments: allocate + a free extent and add it to the FREE_FRAG list. NOTE + that the allocation may have as a side-effect that an + extent containing a descriptor page is added to the + FREE_FRAG list. But we will allocate our page from the + the free extent anyway. */ + + descr = fsp_alloc_free_extent(space, zip_size, + hint, mtr); + + if (descr == NULL) { + /* No free space left */ + + return(FIL_NULL); + } + + xdes_set_state(descr, XDES_FREE_FRAG, mtr); + flst_add_last(header + FSP_FREE_FRAG, + descr + XDES_FLST_NODE, mtr); + } else { + descr = xdes_lst_get_descriptor(space, zip_size, + first, mtr); + } + + /* Reset the hint */ + hint = 0; + } + + /* Now we have in descr an extent with at least one free page. Look + for a free page in the extent. */ + + free = xdes_find_bit(descr, XDES_FREE_BIT, TRUE, + hint % FSP_EXTENT_SIZE, mtr); + if (free == ULINT_UNDEFINED) { + + ut_print_buf(stderr, ((byte*)descr) - 500, 1000); + putc('\n', stderr); + + ut_error; + } + + page_no = xdes_get_offset(descr) + free; + + space_size = mtr_read_ulint(header + FSP_SIZE, MLOG_4BYTES, mtr); + + if (space_size <= page_no) { + /* It must be that we are extending a single-table tablespace + whose size is still < 64 pages */ + + ut_a(space != 0); + if (page_no >= FSP_EXTENT_SIZE) { + fprintf(stderr, + "InnoDB: Error: trying to extend a" + " single-table tablespace %lu\n" + "InnoDB: by single page(s) though the" + " space size %lu. Page no %lu.\n", + (ulong) space, (ulong) space_size, + (ulong) page_no); + return(FIL_NULL); + } + success = fsp_try_extend_data_file_with_pages(space, page_no, + header, mtr); + if (!success) { + /* No disk space left */ + return(FIL_NULL); + } + } + + xdes_set_bit(descr, XDES_FREE_BIT, free, FALSE, mtr); + + /* Update the FRAG_N_USED field */ + frag_n_used = mtr_read_ulint(header + FSP_FRAG_N_USED, MLOG_4BYTES, + mtr); + frag_n_used++; + mlog_write_ulint(header + FSP_FRAG_N_USED, frag_n_used, MLOG_4BYTES, + mtr); + if (xdes_is_full(descr, mtr)) { + /* The fragment is full: move it to another list */ + flst_remove(header + FSP_FREE_FRAG, descr + XDES_FLST_NODE, + mtr); + xdes_set_state(descr, XDES_FULL_FRAG, mtr); + + flst_add_last(header + FSP_FULL_FRAG, descr + XDES_FLST_NODE, + mtr); + mlog_write_ulint(header + FSP_FRAG_N_USED, + frag_n_used - FSP_EXTENT_SIZE, MLOG_4BYTES, + mtr); + } + + /* Initialize the allocated page to the buffer pool, so that it can + be obtained immediately with buf_page_get without need for a disk + read. */ + + buf_page_create(space, page_no, zip_size, mtr); + + block = buf_page_get(space, zip_size, page_no, RW_X_LATCH, mtr); + buf_block_dbg_add_level(block, SYNC_FSP_PAGE); + + /* Prior contents of the page should be ignored */ + fsp_init_file_page(block, mtr); + + return(page_no); +} + +/************************************************************************** +Frees a single page of a space. The page is marked as free and clean. */ +static +void +fsp_free_page( +/*==========*/ + ulint space, /* in: space id */ + ulint zip_size,/* in: compressed page size in bytes + or 0 for uncompressed pages */ + ulint page, /* in: page offset */ + mtr_t* mtr) /* in: mtr handle */ +{ + fsp_header_t* header; + xdes_t* descr; + ulint state; + ulint frag_n_used; + + ut_ad(mtr); + + /* fprintf(stderr, "Freeing page %lu in space %lu\n", page, space); */ + + header = fsp_get_space_header(space, zip_size, mtr); + + descr = xdes_get_descriptor_with_space_hdr(header, space, page, mtr); + + state = xdes_get_state(descr, mtr); + + if (state != XDES_FREE_FRAG && state != XDES_FULL_FRAG) { + fprintf(stderr, + "InnoDB: Error: File space extent descriptor" + " of page %lu has state %lu\n", + (ulong) page, + (ulong) state); + fputs("InnoDB: Dump of descriptor: ", stderr); + ut_print_buf(stderr, ((byte*)descr) - 50, 200); + putc('\n', stderr); + + if (state == XDES_FREE) { + /* We put here some fault tolerance: if the page + is already free, return without doing anything! */ + + return; + } + + ut_error; + } + + if (xdes_get_bit(descr, XDES_FREE_BIT, page % FSP_EXTENT_SIZE, mtr)) { + fprintf(stderr, + "InnoDB: Error: File space extent descriptor" + " of page %lu says it is free\n" + "InnoDB: Dump of descriptor: ", (ulong) page); + ut_print_buf(stderr, ((byte*)descr) - 50, 200); + putc('\n', stderr); + + /* We put here some fault tolerance: if the page + is already free, return without doing anything! */ + + return; + } + + xdes_set_bit(descr, XDES_FREE_BIT, page % FSP_EXTENT_SIZE, TRUE, mtr); + xdes_set_bit(descr, XDES_CLEAN_BIT, page % FSP_EXTENT_SIZE, TRUE, mtr); + + frag_n_used = mtr_read_ulint(header + FSP_FRAG_N_USED, MLOG_4BYTES, + mtr); + if (state == XDES_FULL_FRAG) { + /* The fragment was full: move it to another list */ + flst_remove(header + FSP_FULL_FRAG, descr + XDES_FLST_NODE, + mtr); + xdes_set_state(descr, XDES_FREE_FRAG, mtr); + flst_add_last(header + FSP_FREE_FRAG, descr + XDES_FLST_NODE, + mtr); + mlog_write_ulint(header + FSP_FRAG_N_USED, + frag_n_used + FSP_EXTENT_SIZE - 1, + MLOG_4BYTES, mtr); + } else { + ut_a(frag_n_used > 0); + mlog_write_ulint(header + FSP_FRAG_N_USED, frag_n_used - 1, + MLOG_4BYTES, mtr); + } + + if (xdes_is_free(descr, mtr)) { + /* The extent has become free: move it to another list */ + flst_remove(header + FSP_FREE_FRAG, descr + XDES_FLST_NODE, + mtr); + fsp_free_extent(space, zip_size, page, mtr); + } +} + +/************************************************************************** +Returns an extent to the free list of a space. */ +static +void +fsp_free_extent( +/*============*/ + ulint space, /* in: space id */ + ulint zip_size,/* in: compressed page size in bytes + or 0 for uncompressed pages */ + ulint page, /* in: page offset in the extent */ + mtr_t* mtr) /* in: mtr */ +{ + fsp_header_t* header; + xdes_t* descr; + + ut_ad(mtr); + + header = fsp_get_space_header(space, zip_size, mtr); + + descr = xdes_get_descriptor_with_space_hdr(header, space, page, mtr); + + if (xdes_get_state(descr, mtr) == XDES_FREE) { + + ut_print_buf(stderr, (byte*)descr - 500, 1000); + putc('\n', stderr); + + ut_error; + } + + xdes_init(descr, mtr); + + flst_add_last(header + FSP_FREE, descr + XDES_FLST_NODE, mtr); +} + +/************************************************************************** +Returns the nth inode slot on an inode page. */ +UNIV_INLINE +fseg_inode_t* +fsp_seg_inode_page_get_nth_inode( +/*=============================*/ + /* out: segment inode */ + page_t* page, /* in: segment inode page */ + ulint i, /* in: inode index on page */ + ulint zip_size __attribute__((unused)), + /* in: compressed page size, or 0 */ + mtr_t* mtr __attribute__((unused))) + /* in: mini-transaction handle */ +{ + ut_ad(i < FSP_SEG_INODES_PER_PAGE(zip_size)); + ut_ad(mtr_memo_contains_page(mtr, page, MTR_MEMO_PAGE_X_FIX)); + + return(page + FSEG_ARR_OFFSET + FSEG_INODE_SIZE * i); +} + +/************************************************************************** +Looks for a used segment inode on a segment inode page. */ +static +ulint +fsp_seg_inode_page_find_used( +/*=========================*/ + /* out: segment inode index, or ULINT_UNDEFINED + if not found */ + page_t* page, /* in: segment inode page */ + ulint zip_size,/* in: compressed page size, or 0 */ + mtr_t* mtr) /* in: mini-transaction handle */ +{ + ulint i; + fseg_inode_t* inode; + + for (i = 0; i < FSP_SEG_INODES_PER_PAGE(zip_size); i++) { + + inode = fsp_seg_inode_page_get_nth_inode( + page, i, zip_size, mtr); + + if (!ut_dulint_is_zero(mach_read_from_8(inode + FSEG_ID))) { + /* This is used */ + + return(i); + } + } + + return(ULINT_UNDEFINED); +} + +/************************************************************************** +Looks for an unused segment inode on a segment inode page. */ +static +ulint +fsp_seg_inode_page_find_free( +/*=========================*/ + /* out: segment inode index, or ULINT_UNDEFINED + if not found */ + page_t* page, /* in: segment inode page */ + ulint i, /* in: search forward starting from this index */ + ulint zip_size,/* in: compressed page size, or 0 */ + mtr_t* mtr) /* in: mini-transaction handle */ +{ + fseg_inode_t* inode; + + for (; i < FSP_SEG_INODES_PER_PAGE(zip_size); i++) { + + inode = fsp_seg_inode_page_get_nth_inode( + page, i, zip_size, mtr); + + if (ut_dulint_is_zero(mach_read_from_8(inode + FSEG_ID))) { + /* This is unused */ + + return(i); + } + } + + return(ULINT_UNDEFINED); +} + +/************************************************************************** +Allocates a new file segment inode page. */ +static +ibool +fsp_alloc_seg_inode_page( +/*=====================*/ + /* out: TRUE if could be allocated */ + fsp_header_t* space_header, /* in: space header */ + mtr_t* mtr) /* in: mini-transaction handle */ +{ + fseg_inode_t* inode; + buf_block_t* block; + page_t* page; + ulint page_no; + ulint space; + ulint zip_size; + ulint i; + + ut_ad(page_offset(space_header) == FSP_HEADER_OFFSET); + + space = page_get_space_id(page_align(space_header)); + zip_size = dict_table_flags_to_zip_size( + mach_read_from_4(FSP_SPACE_FLAGS + space_header)); + + page_no = fsp_alloc_free_page(space, zip_size, 0, mtr); + + if (page_no == FIL_NULL) { + + return(FALSE); + } + + block = buf_page_get(space, zip_size, page_no, RW_X_LATCH, mtr); + buf_block_dbg_add_level(block, SYNC_FSP_PAGE); + + block->check_index_page_at_flush = FALSE; + + page = buf_block_get_frame(block); + + mlog_write_ulint(page + FIL_PAGE_TYPE, FIL_PAGE_INODE, + MLOG_2BYTES, mtr); + + for (i = 0; i < FSP_SEG_INODES_PER_PAGE(zip_size); i++) { + + inode = fsp_seg_inode_page_get_nth_inode(page, i, + zip_size, mtr); + + mlog_write_dulint(inode + FSEG_ID, ut_dulint_zero, mtr); + } + + flst_add_last(space_header + FSP_SEG_INODES_FREE, + page + FSEG_INODE_PAGE_NODE, mtr); + return(TRUE); +} + +/************************************************************************** +Allocates a new file segment inode. */ +static +fseg_inode_t* +fsp_alloc_seg_inode( +/*================*/ + /* out: segment inode, or NULL if + not enough space */ + fsp_header_t* space_header, /* in: space header */ + mtr_t* mtr) /* in: mini-transaction handle */ +{ + ulint page_no; + buf_block_t* block; + page_t* page; + fseg_inode_t* inode; + ibool success; + ulint zip_size; + ulint n; + + ut_ad(page_offset(space_header) == FSP_HEADER_OFFSET); + + if (flst_get_len(space_header + FSP_SEG_INODES_FREE, mtr) == 0) { + /* Allocate a new segment inode page */ + + success = fsp_alloc_seg_inode_page(space_header, mtr); + + if (!success) { + + return(NULL); + } + } + + page_no = flst_get_first(space_header + FSP_SEG_INODES_FREE, mtr).page; + + zip_size = dict_table_flags_to_zip_size( + mach_read_from_4(FSP_SPACE_FLAGS + space_header)); + block = buf_page_get(page_get_space_id(page_align(space_header)), + zip_size, page_no, RW_X_LATCH, mtr); + buf_block_dbg_add_level(block, SYNC_FSP_PAGE); + + page = buf_block_get_frame(block); + + n = fsp_seg_inode_page_find_free(page, 0, zip_size, mtr); + + ut_a(n != ULINT_UNDEFINED); + + inode = fsp_seg_inode_page_get_nth_inode(page, n, zip_size, mtr); + + if (ULINT_UNDEFINED == fsp_seg_inode_page_find_free(page, n + 1, + zip_size, mtr)) { + /* There are no other unused headers left on the page: move it + to another list */ + + flst_remove(space_header + FSP_SEG_INODES_FREE, + page + FSEG_INODE_PAGE_NODE, mtr); + + flst_add_last(space_header + FSP_SEG_INODES_FULL, + page + FSEG_INODE_PAGE_NODE, mtr); + } + + return(inode); +} + +/************************************************************************** +Frees a file segment inode. */ +static +void +fsp_free_seg_inode( +/*===============*/ + ulint space, /* in: space id */ + ulint zip_size,/* in: compressed page size in bytes + or 0 for uncompressed pages */ + fseg_inode_t* inode, /* in: segment inode */ + mtr_t* mtr) /* in: mini-transaction handle */ +{ + page_t* page; + fsp_header_t* space_header; + + page = page_align(inode); + + space_header = fsp_get_space_header(space, zip_size, mtr); + + ut_ad(mach_read_from_4(inode + FSEG_MAGIC_N) == FSEG_MAGIC_N_VALUE); + + if (ULINT_UNDEFINED + == fsp_seg_inode_page_find_free(page, 0, zip_size, mtr)) { + + /* Move the page to another list */ + + flst_remove(space_header + FSP_SEG_INODES_FULL, + page + FSEG_INODE_PAGE_NODE, mtr); + + flst_add_last(space_header + FSP_SEG_INODES_FREE, + page + FSEG_INODE_PAGE_NODE, mtr); + } + + mlog_write_dulint(inode + FSEG_ID, ut_dulint_zero, mtr); + mlog_write_ulint(inode + FSEG_MAGIC_N, 0, MLOG_4BYTES, mtr); + + if (ULINT_UNDEFINED + == fsp_seg_inode_page_find_used(page, zip_size, mtr)) { + + /* There are no other used headers left on the page: free it */ + + flst_remove(space_header + FSP_SEG_INODES_FREE, + page + FSEG_INODE_PAGE_NODE, mtr); + + fsp_free_page(space, zip_size, page_get_page_no(page), mtr); + } +} + +/************************************************************************** +Returns the file segment inode, page x-latched. */ +static +fseg_inode_t* +fseg_inode_get( +/*===========*/ + /* out: segment inode, page x-latched */ + fseg_header_t* header, /* in: segment header */ + ulint space, /* in: space id */ + ulint zip_size,/* in: compressed page size in bytes + or 0 for uncompressed pages */ + mtr_t* mtr) /* in: mtr handle */ +{ + fil_addr_t inode_addr; + fseg_inode_t* inode; + + inode_addr.page = mach_read_from_4(header + FSEG_HDR_PAGE_NO); + inode_addr.boffset = mach_read_from_2(header + FSEG_HDR_OFFSET); + ut_ad(space == mach_read_from_4(header + FSEG_HDR_SPACE)); + + inode = fut_get_ptr(space, zip_size, inode_addr, RW_X_LATCH, mtr); + + ut_ad(mach_read_from_4(inode + FSEG_MAGIC_N) == FSEG_MAGIC_N_VALUE); + + return(inode); +} + +/************************************************************************** +Gets the page number from the nth fragment page slot. */ +UNIV_INLINE +ulint +fseg_get_nth_frag_page_no( +/*======================*/ + /* out: page number, FIL_NULL if not in use */ + fseg_inode_t* inode, /* in: segment inode */ + ulint n, /* in: slot index */ + mtr_t* mtr __attribute__((unused))) /* in: mtr handle */ +{ + ut_ad(inode && mtr); + ut_ad(n < FSEG_FRAG_ARR_N_SLOTS); + ut_ad(mtr_memo_contains_page(mtr, inode, MTR_MEMO_PAGE_X_FIX)); + return(mach_read_from_4(inode + FSEG_FRAG_ARR + + n * FSEG_FRAG_SLOT_SIZE)); +} + +/************************************************************************** +Sets the page number in the nth fragment page slot. */ +UNIV_INLINE +void +fseg_set_nth_frag_page_no( +/*======================*/ + fseg_inode_t* inode, /* in: segment inode */ + ulint n, /* in: slot index */ + ulint page_no,/* in: page number to set */ + mtr_t* mtr) /* in: mtr handle */ +{ + ut_ad(inode && mtr); + ut_ad(n < FSEG_FRAG_ARR_N_SLOTS); + ut_ad(mtr_memo_contains_page(mtr, inode, MTR_MEMO_PAGE_X_FIX)); + + mlog_write_ulint(inode + FSEG_FRAG_ARR + n * FSEG_FRAG_SLOT_SIZE, + page_no, MLOG_4BYTES, mtr); +} + +/************************************************************************** +Finds a fragment page slot which is free. */ +static +ulint +fseg_find_free_frag_page_slot( +/*==========================*/ + /* out: slot index; ULINT_UNDEFINED if none + found */ + fseg_inode_t* inode, /* in: segment inode */ + mtr_t* mtr) /* in: mtr handle */ +{ + ulint i; + ulint page_no; + + ut_ad(inode && mtr); + + for (i = 0; i < FSEG_FRAG_ARR_N_SLOTS; i++) { + page_no = fseg_get_nth_frag_page_no(inode, i, mtr); + + if (page_no == FIL_NULL) { + + return(i); + } + } + + return(ULINT_UNDEFINED); +} + +/************************************************************************** +Finds a fragment page slot which is used and last in the array. */ +static +ulint +fseg_find_last_used_frag_page_slot( +/*===============================*/ + /* out: slot index; ULINT_UNDEFINED if none + found */ + fseg_inode_t* inode, /* in: segment inode */ + mtr_t* mtr) /* in: mtr handle */ +{ + ulint i; + ulint page_no; + + ut_ad(inode && mtr); + + for (i = 0; i < FSEG_FRAG_ARR_N_SLOTS; i++) { + page_no = fseg_get_nth_frag_page_no( + inode, FSEG_FRAG_ARR_N_SLOTS - i - 1, mtr); + + if (page_no != FIL_NULL) { + + return(FSEG_FRAG_ARR_N_SLOTS - i - 1); + } + } + + return(ULINT_UNDEFINED); +} + +/************************************************************************** +Calculates reserved fragment page slots. */ +static +ulint +fseg_get_n_frag_pages( +/*==================*/ + /* out: number of fragment pages */ + fseg_inode_t* inode, /* in: segment inode */ + mtr_t* mtr) /* in: mtr handle */ +{ + ulint i; + ulint count = 0; + + ut_ad(inode && mtr); + + for (i = 0; i < FSEG_FRAG_ARR_N_SLOTS; i++) { + if (FIL_NULL != fseg_get_nth_frag_page_no(inode, i, mtr)) { + count++; + } + } + + return(count); +} + +/************************************************************************** +Creates a new segment. */ +UNIV_INTERN +buf_block_t* +fseg_create_general( +/*================*/ + /* out: the block where the segment header is placed, + x-latched, NULL if could not create segment + because of lack of space */ + ulint space, /* in: space id */ + ulint page, /* in: page where the segment header is placed: if + this is != 0, the page must belong to another segment, + if this is 0, a new page will be allocated and it + will belong to the created segment */ + ulint byte_offset, /* in: byte offset of the created segment header + on the page */ + ibool has_done_reservation, /* in: TRUE if the caller has already + done the reservation for the pages with + fsp_reserve_free_extents (at least 2 extents: one for + the inode and the other for the segment) then there is + no need to do the check for this individual + operation */ + mtr_t* mtr) /* in: mtr */ +{ + ulint flags; + ulint zip_size; + fsp_header_t* space_header; + fseg_inode_t* inode; + dulint seg_id; + buf_block_t* block = 0; /* remove warning */ + fseg_header_t* header = 0; /* remove warning */ + rw_lock_t* latch; + ibool success; + ulint n_reserved; + ulint i; + + ut_ad(mtr); + ut_ad(byte_offset + FSEG_HEADER_SIZE + <= UNIV_PAGE_SIZE - FIL_PAGE_DATA_END); + + latch = fil_space_get_latch(space, &flags); + zip_size = dict_table_flags_to_zip_size(flags); + + if (page != 0) { + block = buf_page_get(space, zip_size, page, RW_X_LATCH, mtr); + header = byte_offset + buf_block_get_frame(block); + } + + ut_ad(!mutex_own(&kernel_mutex) + || mtr_memo_contains(mtr, latch, MTR_MEMO_X_LOCK)); + + mtr_x_lock(latch, mtr); + + if (rw_lock_get_x_lock_count(latch) == 1) { + /* This thread did not own the latch before this call: free + excess pages from the insert buffer free list */ + + if (space == IBUF_SPACE_ID) { + ibuf_free_excess_pages(); + } + } + + if (!has_done_reservation) { + success = fsp_reserve_free_extents(&n_reserved, space, 2, + FSP_NORMAL, mtr); + if (!success) { + return(NULL); + } + } + + space_header = fsp_get_space_header(space, zip_size, mtr); + + inode = fsp_alloc_seg_inode(space_header, mtr); + + if (inode == NULL) { + + goto funct_exit; + } + + /* Read the next segment id from space header and increment the + value in space header */ + + seg_id = mtr_read_dulint(space_header + FSP_SEG_ID, mtr); + + mlog_write_dulint(space_header + FSP_SEG_ID, ut_dulint_add(seg_id, 1), + mtr); + + mlog_write_dulint(inode + FSEG_ID, seg_id, mtr); + mlog_write_ulint(inode + FSEG_NOT_FULL_N_USED, 0, MLOG_4BYTES, mtr); + + flst_init(inode + FSEG_FREE, mtr); + flst_init(inode + FSEG_NOT_FULL, mtr); + flst_init(inode + FSEG_FULL, mtr); + + mlog_write_ulint(inode + FSEG_MAGIC_N, FSEG_MAGIC_N_VALUE, + MLOG_4BYTES, mtr); + for (i = 0; i < FSEG_FRAG_ARR_N_SLOTS; i++) { + fseg_set_nth_frag_page_no(inode, i, FIL_NULL, mtr); + } + + if (page == 0) { + page = fseg_alloc_free_page_low(space, zip_size, + inode, 0, FSP_UP, mtr); + + if (page == FIL_NULL) { + + fsp_free_seg_inode(space, zip_size, inode, mtr); + + goto funct_exit; + } + + block = buf_page_get(space, zip_size, page, RW_X_LATCH, mtr); + header = byte_offset + buf_block_get_frame(block); + mlog_write_ulint(header - byte_offset + FIL_PAGE_TYPE, + FIL_PAGE_TYPE_SYS, MLOG_2BYTES, mtr); + } + + mlog_write_ulint(header + FSEG_HDR_OFFSET, + page_offset(inode), MLOG_2BYTES, mtr); + + mlog_write_ulint(header + FSEG_HDR_PAGE_NO, + page_get_page_no(page_align(inode)), + MLOG_4BYTES, mtr); + + mlog_write_ulint(header + FSEG_HDR_SPACE, space, MLOG_4BYTES, mtr); + +funct_exit: + if (!has_done_reservation) { + + fil_space_release_free_extents(space, n_reserved); + } + + return(block); +} + +/************************************************************************** +Creates a new segment. */ +UNIV_INTERN +buf_block_t* +fseg_create( +/*========*/ + /* out: the block where the segment header is placed, + x-latched, NULL if could not create segment + because of lack of space */ + ulint space, /* in: space id */ + ulint page, /* in: page where the segment header is placed: if + this is != 0, the page must belong to another segment, + if this is 0, a new page will be allocated and it + will belong to the created segment */ + ulint byte_offset, /* in: byte offset of the created segment header + on the page */ + mtr_t* mtr) /* in: mtr */ +{ + return(fseg_create_general(space, page, byte_offset, FALSE, mtr)); +} + +/************************************************************************** +Calculates the number of pages reserved by a segment, and how many pages are +currently used. */ +static +ulint +fseg_n_reserved_pages_low( +/*======================*/ + /* out: number of reserved pages */ + fseg_inode_t* inode, /* in: segment inode */ + ulint* used, /* out: number of pages used (<= reserved) */ + mtr_t* mtr) /* in: mtr handle */ +{ + ulint ret; + + ut_ad(inode && used && mtr); + ut_ad(mtr_memo_contains_page(mtr, inode, MTR_MEMO_PAGE_X_FIX)); + + *used = mtr_read_ulint(inode + FSEG_NOT_FULL_N_USED, MLOG_4BYTES, mtr) + + FSP_EXTENT_SIZE * flst_get_len(inode + FSEG_FULL, mtr) + + fseg_get_n_frag_pages(inode, mtr); + + ret = fseg_get_n_frag_pages(inode, mtr) + + FSP_EXTENT_SIZE * flst_get_len(inode + FSEG_FREE, mtr) + + FSP_EXTENT_SIZE * flst_get_len(inode + FSEG_NOT_FULL, mtr) + + FSP_EXTENT_SIZE * flst_get_len(inode + FSEG_FULL, mtr); + + return(ret); +} + +/************************************************************************** +Calculates the number of pages reserved by a segment, and how many pages are +currently used. */ +UNIV_INTERN +ulint +fseg_n_reserved_pages( +/*==================*/ + /* out: number of reserved pages */ + fseg_header_t* header, /* in: segment header */ + ulint* used, /* out: number of pages used (<= reserved) */ + mtr_t* mtr) /* in: mtr handle */ +{ + ulint ret; + fseg_inode_t* inode; + ulint space; + ulint flags; + ulint zip_size; + rw_lock_t* latch; + + space = page_get_space_id(page_align(header)); + latch = fil_space_get_latch(space, &flags); + zip_size = dict_table_flags_to_zip_size(flags); + + ut_ad(!mutex_own(&kernel_mutex) + || mtr_memo_contains(mtr, latch, MTR_MEMO_X_LOCK)); + + mtr_x_lock(latch, mtr); + + inode = fseg_inode_get(header, space, zip_size, mtr); + + ret = fseg_n_reserved_pages_low(inode, used, mtr); + + return(ret); +} + +/************************************************************************* +Tries to fill the free list of a segment with consecutive free extents. +This happens if the segment is big enough to allow extents in the free list, +the free list is empty, and the extents can be allocated consecutively from +the hint onward. */ +static +void +fseg_fill_free_list( +/*================*/ + fseg_inode_t* inode, /* in: segment inode */ + ulint space, /* in: space id */ + ulint zip_size,/* in: compressed page size in bytes + or 0 for uncompressed pages */ + ulint hint, /* in: hint which extent would be good as + the first extent */ + mtr_t* mtr) /* in: mtr */ +{ + xdes_t* descr; + ulint i; + dulint seg_id; + ulint reserved; + ulint used; + + ut_ad(inode && mtr); + ut_ad(!((page_offset(inode) - FSEG_ARR_OFFSET) % FSEG_INODE_SIZE)); + + reserved = fseg_n_reserved_pages_low(inode, &used, mtr); + + if (reserved < FSEG_FREE_LIST_LIMIT * FSP_EXTENT_SIZE) { + + /* The segment is too small to allow extents in free list */ + + return; + } + + if (flst_get_len(inode + FSEG_FREE, mtr) > 0) { + /* Free list is not empty */ + + return; + } + + for (i = 0; i < FSEG_FREE_LIST_MAX_LEN; i++) { + descr = xdes_get_descriptor(space, zip_size, hint, mtr); + + if ((descr == NULL) + || (XDES_FREE != xdes_get_state(descr, mtr))) { + + /* We cannot allocate the desired extent: stop */ + + return; + } + + descr = fsp_alloc_free_extent(space, zip_size, hint, mtr); + + xdes_set_state(descr, XDES_FSEG, mtr); + + seg_id = mtr_read_dulint(inode + FSEG_ID, mtr); + mlog_write_dulint(descr + XDES_ID, seg_id, mtr); + + flst_add_last(inode + FSEG_FREE, descr + XDES_FLST_NODE, mtr); + hint += FSP_EXTENT_SIZE; + } +} + +/************************************************************************* +Allocates a free extent for the segment: looks first in the free list of the +segment, then tries to allocate from the space free list. NOTE that the extent +returned still resides in the segment free list, it is not yet taken off it! */ +static +xdes_t* +fseg_alloc_free_extent( +/*===================*/ + /* out: allocated extent, still placed in the + segment free list, NULL if could + not be allocated */ + fseg_inode_t* inode, /* in: segment inode */ + ulint space, /* in: space id */ + ulint zip_size,/* in: compressed page size in bytes + or 0 for uncompressed pages */ + mtr_t* mtr) /* in: mtr */ +{ + xdes_t* descr; + dulint seg_id; + fil_addr_t first; + + ut_ad(!((page_offset(inode) - FSEG_ARR_OFFSET) % FSEG_INODE_SIZE)); + + if (flst_get_len(inode + FSEG_FREE, mtr) > 0) { + /* Segment free list is not empty, allocate from it */ + + first = flst_get_first(inode + FSEG_FREE, mtr); + + descr = xdes_lst_get_descriptor(space, zip_size, first, mtr); + } else { + /* Segment free list was empty, allocate from space */ + descr = fsp_alloc_free_extent(space, zip_size, 0, mtr); + + if (descr == NULL) { + + return(NULL); + } + + seg_id = mtr_read_dulint(inode + FSEG_ID, mtr); + + xdes_set_state(descr, XDES_FSEG, mtr); + mlog_write_dulint(descr + XDES_ID, seg_id, mtr); + flst_add_last(inode + FSEG_FREE, descr + XDES_FLST_NODE, mtr); + + /* Try to fill the segment free list */ + fseg_fill_free_list(inode, space, zip_size, + xdes_get_offset(descr) + FSP_EXTENT_SIZE, + mtr); + } + + return(descr); +} + +/************************************************************************** +Allocates a single free page from a segment. This function implements +the intelligent allocation strategy which tries to minimize file space +fragmentation. */ +static +ulint +fseg_alloc_free_page_low( +/*=====================*/ + /* out: the allocated page number, FIL_NULL + if no page could be allocated */ + ulint space, /* in: space */ + ulint zip_size,/* in: compressed page size in bytes + or 0 for uncompressed pages */ + fseg_inode_t* seg_inode, /* in: segment inode */ + ulint hint, /* in: hint of which page would be desirable */ + byte direction, /* in: if the new page is needed because + of an index page split, and records are + inserted there in order, into which + direction they go alphabetically: FSP_DOWN, + FSP_UP, FSP_NO_DIR */ + mtr_t* mtr) /* in: mtr handle */ +{ + fsp_header_t* space_header; + ulint space_size; + dulint seg_id; + ulint used; + ulint reserved; + xdes_t* descr; /* extent of the hinted page */ + ulint ret_page; /* the allocated page offset, FIL_NULL + if could not be allocated */ + xdes_t* ret_descr; /* the extent of the allocated page */ + ibool frag_page_allocated = FALSE; + ibool success; + ulint n; + + ut_ad(mtr); + ut_ad((direction >= FSP_UP) && (direction <= FSP_NO_DIR)); + ut_ad(mach_read_from_4(seg_inode + FSEG_MAGIC_N) + == FSEG_MAGIC_N_VALUE); + ut_ad(!((page_offset(seg_inode) - FSEG_ARR_OFFSET) % FSEG_INODE_SIZE)); + seg_id = mtr_read_dulint(seg_inode + FSEG_ID, mtr); + + ut_ad(!ut_dulint_is_zero(seg_id)); + + reserved = fseg_n_reserved_pages_low(seg_inode, &used, mtr); + + space_header = fsp_get_space_header(space, zip_size, mtr); + + descr = xdes_get_descriptor_with_space_hdr(space_header, space, + hint, mtr); + if (descr == NULL) { + /* Hint outside space or too high above free limit: reset + hint */ + hint = 0; + descr = xdes_get_descriptor(space, zip_size, hint, mtr); + } + + /* In the big if-else below we look for ret_page and ret_descr */ + /*-------------------------------------------------------------*/ + if ((xdes_get_state(descr, mtr) == XDES_FSEG) + && (0 == ut_dulint_cmp(mtr_read_dulint(descr + XDES_ID, + mtr), seg_id)) + && (xdes_get_bit(descr, XDES_FREE_BIT, + hint % FSP_EXTENT_SIZE, mtr) == TRUE)) { + + /* 1. We can take the hinted page + =================================*/ + ret_descr = descr; + ret_page = hint; + /*-----------------------------------------------------------*/ + } else if ((xdes_get_state(descr, mtr) == XDES_FREE) + && ((reserved - used) < reserved / FSEG_FILLFACTOR) + && (used >= FSEG_FRAG_LIMIT)) { + + /* 2. We allocate the free extent from space and can take + ========================================================= + the hinted page + ===============*/ + ret_descr = fsp_alloc_free_extent(space, zip_size, hint, mtr); + + ut_a(ret_descr == descr); + + xdes_set_state(ret_descr, XDES_FSEG, mtr); + mlog_write_dulint(ret_descr + XDES_ID, seg_id, mtr); + flst_add_last(seg_inode + FSEG_FREE, + ret_descr + XDES_FLST_NODE, mtr); + + /* Try to fill the segment free list */ + fseg_fill_free_list(seg_inode, space, zip_size, + hint + FSP_EXTENT_SIZE, mtr); + ret_page = hint; + /*-----------------------------------------------------------*/ + } else if ((direction != FSP_NO_DIR) + && ((reserved - used) < reserved / FSEG_FILLFACTOR) + && (used >= FSEG_FRAG_LIMIT) + && (!!(ret_descr + = fseg_alloc_free_extent(seg_inode, + space, zip_size, mtr)))) { + + /* 3. We take any free extent (which was already assigned above + =============================================================== + in the if-condition to ret_descr) and take the lowest or + ======================================================== + highest page in it, depending on the direction + ==============================================*/ + ret_page = xdes_get_offset(ret_descr); + + if (direction == FSP_DOWN) { + ret_page += FSP_EXTENT_SIZE - 1; + } + /*-----------------------------------------------------------*/ + } else if ((xdes_get_state(descr, mtr) == XDES_FSEG) + && (0 == ut_dulint_cmp(mtr_read_dulint(descr + XDES_ID, + mtr), seg_id)) + && (!xdes_is_full(descr, mtr))) { + + /* 4. We can take the page from the same extent as the + ====================================================== + hinted page (and the extent already belongs to the + ================================================== + segment) + ========*/ + ret_descr = descr; + ret_page = xdes_get_offset(ret_descr) + + xdes_find_bit(ret_descr, XDES_FREE_BIT, TRUE, + hint % FSP_EXTENT_SIZE, mtr); + /*-----------------------------------------------------------*/ + } else if (reserved - used > 0) { + /* 5. We take any unused page from the segment + ==============================================*/ + fil_addr_t first; + + if (flst_get_len(seg_inode + FSEG_NOT_FULL, mtr) > 0) { + first = flst_get_first(seg_inode + FSEG_NOT_FULL, + mtr); + } else if (flst_get_len(seg_inode + FSEG_FREE, mtr) > 0) { + first = flst_get_first(seg_inode + FSEG_FREE, mtr); + } else { + ut_error; + return(FIL_NULL); + } + + ret_descr = xdes_lst_get_descriptor(space, zip_size, + first, mtr); + ret_page = xdes_get_offset(ret_descr) + + xdes_find_bit(ret_descr, XDES_FREE_BIT, TRUE, + 0, mtr); + /*-----------------------------------------------------------*/ + } else if (used < FSEG_FRAG_LIMIT) { + /* 6. We allocate an individual page from the space + ===================================================*/ + ret_page = fsp_alloc_free_page(space, zip_size, hint, mtr); + ret_descr = NULL; + + frag_page_allocated = TRUE; + + if (ret_page != FIL_NULL) { + /* Put the page in the fragment page array of the + segment */ + n = fseg_find_free_frag_page_slot(seg_inode, mtr); + ut_a(n != FIL_NULL); + + fseg_set_nth_frag_page_no(seg_inode, n, ret_page, + mtr); + } + /*-----------------------------------------------------------*/ + } else { + /* 7. We allocate a new extent and take its first page + ======================================================*/ + ret_descr = fseg_alloc_free_extent(seg_inode, + space, zip_size, mtr); + + if (ret_descr == NULL) { + ret_page = FIL_NULL; + } else { + ret_page = xdes_get_offset(ret_descr); + } + } + + if (ret_page == FIL_NULL) { + /* Page could not be allocated */ + + return(FIL_NULL); + } + + if (space != 0) { + space_size = fil_space_get_size(space); + + if (space_size <= ret_page) { + /* It must be that we are extending a single-table + tablespace whose size is still < 64 pages */ + + if (ret_page >= FSP_EXTENT_SIZE) { + fprintf(stderr, + "InnoDB: Error (2): trying to extend" + " a single-table tablespace %lu\n" + "InnoDB: by single page(s) though" + " the space size %lu. Page no %lu.\n", + (ulong) space, (ulong) space_size, + (ulong) ret_page); + return(FIL_NULL); + } + + success = fsp_try_extend_data_file_with_pages( + space, ret_page, space_header, mtr); + if (!success) { + /* No disk space left */ + return(FIL_NULL); + } + } + } + + if (!frag_page_allocated) { + /* Initialize the allocated page to buffer pool, so that it + can be obtained immediately with buf_page_get without need + for a disk read */ + buf_block_t* block; + ulint zip_size = dict_table_flags_to_zip_size( + mach_read_from_4(FSP_SPACE_FLAGS + space_header)); + + block = buf_page_create(space, ret_page, zip_size, mtr); + buf_block_dbg_add_level(block, SYNC_FSP_PAGE); + + if (UNIV_UNLIKELY(block != buf_page_get(space, zip_size, + ret_page, RW_X_LATCH, + mtr))) { + ut_error; + } + + /* The prior contents of the page should be ignored */ + fsp_init_file_page(block, mtr); + + /* At this point we know the extent and the page offset. + The extent is still in the appropriate list (FSEG_NOT_FULL + or FSEG_FREE), and the page is not yet marked as used. */ + + ut_ad(xdes_get_descriptor(space, zip_size, ret_page, mtr) + == ret_descr); + ut_ad(xdes_get_bit(ret_descr, XDES_FREE_BIT, + ret_page % FSP_EXTENT_SIZE, mtr) == TRUE); + + fseg_mark_page_used(seg_inode, space, zip_size, ret_page, mtr); + } + + buf_reset_check_index_page_at_flush(space, ret_page); + + return(ret_page); +} + +/************************************************************************** +Allocates a single free page from a segment. This function implements +the intelligent allocation strategy which tries to minimize file space +fragmentation. */ +UNIV_INTERN +ulint +fseg_alloc_free_page_general( +/*=========================*/ + /* out: allocated page offset, FIL_NULL if no + page could be allocated */ + fseg_header_t* seg_header,/* in: segment header */ + ulint hint, /* in: hint of which page would be desirable */ + byte direction,/* in: if the new page is needed because + of an index page split, and records are + inserted there in order, into which + direction they go alphabetically: FSP_DOWN, + FSP_UP, FSP_NO_DIR */ + ibool has_done_reservation, /* in: TRUE if the caller has + already done the reservation for the page + with fsp_reserve_free_extents, then there + is no need to do the check for this individual + page */ + mtr_t* mtr) /* in: mtr handle */ +{ + fseg_inode_t* inode; + ulint space; + ulint flags; + ulint zip_size; + rw_lock_t* latch; + ibool success; + ulint page_no; + ulint n_reserved; + + space = page_get_space_id(page_align(seg_header)); + + latch = fil_space_get_latch(space, &flags); + + zip_size = dict_table_flags_to_zip_size(flags); + + ut_ad(!mutex_own(&kernel_mutex) + || mtr_memo_contains(mtr, latch, MTR_MEMO_X_LOCK)); + + mtr_x_lock(latch, mtr); + + if (rw_lock_get_x_lock_count(latch) == 1) { + /* This thread did not own the latch before this call: free + excess pages from the insert buffer free list */ + + if (space == IBUF_SPACE_ID) { + ibuf_free_excess_pages(); + } + } + + inode = fseg_inode_get(seg_header, space, zip_size, mtr); + + if (!has_done_reservation) { + success = fsp_reserve_free_extents(&n_reserved, space, 2, + FSP_NORMAL, mtr); + if (!success) { + return(FIL_NULL); + } + } + + page_no = fseg_alloc_free_page_low(space, zip_size, + inode, hint, direction, mtr); + if (!has_done_reservation) { + fil_space_release_free_extents(space, n_reserved); + } + + return(page_no); +} + +/************************************************************************** +Allocates a single free page from a segment. This function implements +the intelligent allocation strategy which tries to minimize file space +fragmentation. */ +UNIV_INTERN +ulint +fseg_alloc_free_page( +/*=================*/ + /* out: allocated page offset, FIL_NULL if no + page could be allocated */ + fseg_header_t* seg_header,/* in: segment header */ + ulint hint, /* in: hint of which page would be desirable */ + byte direction,/* in: if the new page is needed because + of an index page split, and records are + inserted there in order, into which + direction they go alphabetically: FSP_DOWN, + FSP_UP, FSP_NO_DIR */ + mtr_t* mtr) /* in: mtr handle */ +{ + return(fseg_alloc_free_page_general(seg_header, hint, direction, + FALSE, mtr)); +} + +/************************************************************************** +Checks that we have at least 2 frag pages free in the first extent of a +single-table tablespace, and they are also physically initialized to the data +file. That is we have already extended the data file so that those pages are +inside the data file. If not, this function extends the tablespace with +pages. */ +static +ibool +fsp_reserve_free_pages( +/*===================*/ + /* out: TRUE if there were >= 3 free + pages, or we were able to extend */ + ulint space, /* in: space id, must be != 0 */ + fsp_header_t* space_header, /* in: header of that space, + x-latched */ + ulint size, /* in: size of the tablespace in pages, + must be < FSP_EXTENT_SIZE / 2 */ + mtr_t* mtr) /* in: mtr */ +{ + xdes_t* descr; + ulint n_used; + + ut_a(space != 0); + ut_a(size < FSP_EXTENT_SIZE / 2); + + descr = xdes_get_descriptor_with_space_hdr(space_header, space, 0, + mtr); + n_used = xdes_get_n_used(descr, mtr); + + ut_a(n_used <= size); + + if (size >= n_used + 2) { + + return(TRUE); + } + + return(fsp_try_extend_data_file_with_pages(space, n_used + 1, + space_header, mtr)); +} + +/************************************************************************** +Reserves free pages from a tablespace. All mini-transactions which may +use several pages from the tablespace should call this function beforehand +and reserve enough free extents so that they certainly will be able +to do their operation, like a B-tree page split, fully. Reservations +must be released with function fil_space_release_free_extents! + +The alloc_type below has the following meaning: FSP_NORMAL means an +operation which will probably result in more space usage, like an +insert in a B-tree; FSP_UNDO means allocation to undo logs: if we are +deleting rows, then this allocation will in the long run result in +less space usage (after a purge); FSP_CLEANING means allocation done +in a physical record delete (like in a purge) or other cleaning operation +which will result in less space usage in the long run. We prefer the latter +two types of allocation: when space is scarce, FSP_NORMAL allocations +will not succeed, but the latter two allocations will succeed, if possible. +The purpose is to avoid dead end where the database is full but the +user cannot free any space because these freeing operations temporarily +reserve some space. + +Single-table tablespaces whose size is < 32 pages are a special case. In this +function we would liberally reserve several 64 page extents for every page +split or merge in a B-tree. But we do not want to waste disk space if the table +only occupies < 32 pages. That is why we apply different rules in that special +case, just ensuring that there are 3 free pages available. */ +UNIV_INTERN +ibool +fsp_reserve_free_extents( +/*=====================*/ + /* out: TRUE if we were able to make the reservation */ + ulint* n_reserved,/* out: number of extents actually reserved; if we + return TRUE and the tablespace size is < 64 pages, + then this can be 0, otherwise it is n_ext */ + ulint space, /* in: space id */ + ulint n_ext, /* in: number of extents to reserve */ + ulint alloc_type,/* in: FSP_NORMAL, FSP_UNDO, or FSP_CLEANING */ + mtr_t* mtr) /* in: mtr */ +{ + fsp_header_t* space_header; + rw_lock_t* latch; + ulint n_free_list_ext; + ulint free_limit; + ulint size; + ulint flags; + ulint zip_size; + ulint n_free; + ulint n_free_up; + ulint reserve; + ibool success; + ulint n_pages_added; + + ut_ad(mtr); + *n_reserved = n_ext; + + latch = fil_space_get_latch(space, &flags); + zip_size = dict_table_flags_to_zip_size(flags); + + ut_ad(!mutex_own(&kernel_mutex) + || mtr_memo_contains(mtr, latch, MTR_MEMO_X_LOCK)); + + mtr_x_lock(latch, mtr); + + space_header = fsp_get_space_header(space, zip_size, mtr); +try_again: + size = mtr_read_ulint(space_header + FSP_SIZE, MLOG_4BYTES, mtr); + + if (size < FSP_EXTENT_SIZE / 2) { + /* Use different rules for small single-table tablespaces */ + *n_reserved = 0; + return(fsp_reserve_free_pages(space, space_header, size, mtr)); + } + + n_free_list_ext = flst_get_len(space_header + FSP_FREE, mtr); + + free_limit = mtr_read_ulint(space_header + FSP_FREE_LIMIT, + MLOG_4BYTES, mtr); + + /* Below we play safe when counting free extents above the free limit: + some of them will contain extent descriptor pages, and therefore + will not be free extents */ + + n_free_up = (size - free_limit) / FSP_EXTENT_SIZE; + + if (n_free_up > 0) { + n_free_up--; + if (!zip_size) { + n_free_up -= n_free_up + / (UNIV_PAGE_SIZE / FSP_EXTENT_SIZE); + } else { + n_free_up -= n_free_up + / (zip_size / FSP_EXTENT_SIZE); + } + } + + n_free = n_free_list_ext + n_free_up; + + if (alloc_type == FSP_NORMAL) { + /* We reserve 1 extent + 0.5 % of the space size to undo logs + and 1 extent + 0.5 % to cleaning operations; NOTE: this source + code is duplicated in the function below! */ + + reserve = 2 + ((size / FSP_EXTENT_SIZE) * 2) / 200; + + if (n_free <= reserve + n_ext) { + + goto try_to_extend; + } + } else if (alloc_type == FSP_UNDO) { + /* We reserve 0.5 % of the space size to cleaning operations */ + + reserve = 1 + ((size / FSP_EXTENT_SIZE) * 1) / 200; + + if (n_free <= reserve + n_ext) { + + goto try_to_extend; + } + } else { + ut_a(alloc_type == FSP_CLEANING); + } + + success = fil_space_reserve_free_extents(space, n_free, n_ext); + + if (success) { + return(TRUE); + } +try_to_extend: + success = fsp_try_extend_data_file(&n_pages_added, space, + space_header, mtr); + if (success && n_pages_added > 0) { + + goto try_again; + } + + return(FALSE); +} + +/************************************************************************** +This function should be used to get information on how much we still +will be able to insert new data to the database without running out the +tablespace. Only free extents are taken into account and we also subtract +the safety margin required by the above function fsp_reserve_free_extents. */ +UNIV_INTERN +ullint +fsp_get_available_space_in_free_extents( +/*====================================*/ + /* out: available space in kB */ + ulint space) /* in: space id */ +{ + fsp_header_t* space_header; + ulint n_free_list_ext; + ulint free_limit; + ulint size; + ulint flags; + ulint zip_size; + ulint n_free; + ulint n_free_up; + ulint reserve; + rw_lock_t* latch; + mtr_t mtr; + + ut_ad(!mutex_own(&kernel_mutex)); + + mtr_start(&mtr); + + latch = fil_space_get_latch(space, &flags); + zip_size = dict_table_flags_to_zip_size(flags); + + mtr_x_lock(latch, &mtr); + + space_header = fsp_get_space_header(space, zip_size, &mtr); + + size = mtr_read_ulint(space_header + FSP_SIZE, MLOG_4BYTES, &mtr); + + n_free_list_ext = flst_get_len(space_header + FSP_FREE, &mtr); + + free_limit = mtr_read_ulint(space_header + FSP_FREE_LIMIT, + MLOG_4BYTES, &mtr); + mtr_commit(&mtr); + + if (size < FSP_EXTENT_SIZE) { + ut_a(space != 0); /* This must be a single-table + tablespace */ + + return(0); /* TODO: count free frag pages and + return a value based on that */ + } + + /* Below we play safe when counting free extents above the free limit: + some of them will contain extent descriptor pages, and therefore + will not be free extents */ + + n_free_up = (size - free_limit) / FSP_EXTENT_SIZE; + + if (n_free_up > 0) { + n_free_up--; + if (!zip_size) { + n_free_up -= n_free_up + / (UNIV_PAGE_SIZE / FSP_EXTENT_SIZE); + } else { + n_free_up -= n_free_up + / (zip_size / FSP_EXTENT_SIZE); + } + } + + n_free = n_free_list_ext + n_free_up; + + /* We reserve 1 extent + 0.5 % of the space size to undo logs + and 1 extent + 0.5 % to cleaning operations; NOTE: this source + code is duplicated in the function above! */ + + reserve = 2 + ((size / FSP_EXTENT_SIZE) * 2) / 200; + + if (reserve > n_free) { + return(0); + } + + if (!zip_size) { + return((ullint) (n_free - reserve) + * FSP_EXTENT_SIZE + * (UNIV_PAGE_SIZE / 1024)); + } else { + return((ullint) (n_free - reserve) + * FSP_EXTENT_SIZE + * (zip_size / 1024)); + } +} + +/************************************************************************ +Marks a page used. The page must reside within the extents of the given +segment. */ +static +void +fseg_mark_page_used( +/*================*/ + fseg_inode_t* seg_inode,/* in: segment inode */ + ulint space, /* in: space id */ + ulint zip_size,/* in: compressed page size in bytes + or 0 for uncompressed pages */ + ulint page, /* in: page offset */ + mtr_t* mtr) /* in: mtr */ +{ + xdes_t* descr; + ulint not_full_n_used; + + ut_ad(seg_inode && mtr); + ut_ad(!((page_offset(seg_inode) - FSEG_ARR_OFFSET) % FSEG_INODE_SIZE)); + + descr = xdes_get_descriptor(space, zip_size, page, mtr); + + ut_ad(mtr_read_ulint(seg_inode + FSEG_ID, MLOG_4BYTES, mtr) + == mtr_read_ulint(descr + XDES_ID, MLOG_4BYTES, mtr)); + + if (xdes_is_free(descr, mtr)) { + /* We move the extent from the free list to the + NOT_FULL list */ + flst_remove(seg_inode + FSEG_FREE, descr + XDES_FLST_NODE, + mtr); + flst_add_last(seg_inode + FSEG_NOT_FULL, + descr + XDES_FLST_NODE, mtr); + } + + ut_ad(xdes_get_bit(descr, XDES_FREE_BIT, page % FSP_EXTENT_SIZE, mtr) + == TRUE); + /* We mark the page as used */ + xdes_set_bit(descr, XDES_FREE_BIT, page % FSP_EXTENT_SIZE, FALSE, mtr); + + not_full_n_used = mtr_read_ulint(seg_inode + FSEG_NOT_FULL_N_USED, + MLOG_4BYTES, mtr); + not_full_n_used++; + mlog_write_ulint(seg_inode + FSEG_NOT_FULL_N_USED, not_full_n_used, + MLOG_4BYTES, mtr); + if (xdes_is_full(descr, mtr)) { + /* We move the extent from the NOT_FULL list to the + FULL list */ + flst_remove(seg_inode + FSEG_NOT_FULL, + descr + XDES_FLST_NODE, mtr); + flst_add_last(seg_inode + FSEG_FULL, + descr + XDES_FLST_NODE, mtr); + + mlog_write_ulint(seg_inode + FSEG_NOT_FULL_N_USED, + not_full_n_used - FSP_EXTENT_SIZE, + MLOG_4BYTES, mtr); + } +} + +/************************************************************************** +Frees a single page of a segment. */ +static +void +fseg_free_page_low( +/*===============*/ + fseg_inode_t* seg_inode, /* in: segment inode */ + ulint space, /* in: space id */ + ulint zip_size,/* in: compressed page size in bytes + or 0 for uncompressed pages */ + ulint page, /* in: page offset */ + mtr_t* mtr) /* in: mtr handle */ +{ + xdes_t* descr; + ulint not_full_n_used; + ulint state; + dulint descr_id; + dulint seg_id; + ulint i; + + ut_ad(seg_inode && mtr); + ut_ad(mach_read_from_4(seg_inode + FSEG_MAGIC_N) + == FSEG_MAGIC_N_VALUE); + ut_ad(!((page_offset(seg_inode) - FSEG_ARR_OFFSET) % FSEG_INODE_SIZE)); + + /* Drop search system page hash index if the page is found in + the pool and is hashed */ + + btr_search_drop_page_hash_when_freed(space, zip_size, page); + + descr = xdes_get_descriptor(space, zip_size, page, mtr); + + ut_a(descr); + if (xdes_get_bit(descr, XDES_FREE_BIT, page % FSP_EXTENT_SIZE, mtr)) { + fputs("InnoDB: Dump of the tablespace extent descriptor: ", + stderr); + ut_print_buf(stderr, descr, 40); + + fprintf(stderr, "\n" + "InnoDB: Serious error! InnoDB is trying to" + " free page %lu\n" + "InnoDB: though it is already marked as free" + " in the tablespace!\n" + "InnoDB: The tablespace free space info is corrupt.\n" + "InnoDB: You may need to dump your" + " InnoDB tables and recreate the whole\n" + "InnoDB: database!\n", (ulong) page); +crash: + fputs("InnoDB: Please refer to\n" + "InnoDB: http://dev.mysql.com/doc/refman/5.1/en/" + "forcing-recovery.html\n" + "InnoDB: about forcing recovery.\n", stderr); + ut_error; + } + + state = xdes_get_state(descr, mtr); + + if (state != XDES_FSEG) { + /* The page is in the fragment pages of the segment */ + + for (i = 0;; i++) { + if (fseg_get_nth_frag_page_no(seg_inode, i, mtr) + == page) { + + fseg_set_nth_frag_page_no(seg_inode, i, + FIL_NULL, mtr); + break; + } + } + + fsp_free_page(space, zip_size, page, mtr); + + return; + } + + /* If we get here, the page is in some extent of the segment */ + + descr_id = mtr_read_dulint(descr + XDES_ID, mtr); + seg_id = mtr_read_dulint(seg_inode + FSEG_ID, mtr); +#if 0 + fprintf(stderr, + "InnoDB: InnoDB is freeing space %lu page %lu,\n" + "InnoDB: which belongs to descr seg %lu %lu\n" + "InnoDB: segment %lu %lu.\n", + (ulong) space, (ulong) page, + (ulong) ut_dulint_get_high(descr_id), + (ulong) ut_dulint_get_low(descr_id), + (ulong) ut_dulint_get_high(seg_id), + (ulong) ut_dulint_get_low(seg_id)); +#endif /* 0 */ + if (0 != ut_dulint_cmp(descr_id, seg_id)) { + fputs("InnoDB: Dump of the tablespace extent descriptor: ", + stderr); + ut_print_buf(stderr, descr, 40); + fputs("\nInnoDB: Dump of the segment inode: ", stderr); + ut_print_buf(stderr, seg_inode, 40); + putc('\n', stderr); + + fprintf(stderr, + "InnoDB: Serious error: InnoDB is trying to" + " free space %lu page %lu,\n" + "InnoDB: which does not belong to" + " segment %lu %lu but belongs\n" + "InnoDB: to segment %lu %lu.\n", + (ulong) space, (ulong) page, + (ulong) ut_dulint_get_high(descr_id), + (ulong) ut_dulint_get_low(descr_id), + (ulong) ut_dulint_get_high(seg_id), + (ulong) ut_dulint_get_low(seg_id)); + goto crash; + } + + not_full_n_used = mtr_read_ulint(seg_inode + FSEG_NOT_FULL_N_USED, + MLOG_4BYTES, mtr); + if (xdes_is_full(descr, mtr)) { + /* The fragment is full: move it to another list */ + flst_remove(seg_inode + FSEG_FULL, + descr + XDES_FLST_NODE, mtr); + flst_add_last(seg_inode + FSEG_NOT_FULL, + descr + XDES_FLST_NODE, mtr); + mlog_write_ulint(seg_inode + FSEG_NOT_FULL_N_USED, + not_full_n_used + FSP_EXTENT_SIZE - 1, + MLOG_4BYTES, mtr); + } else { + ut_a(not_full_n_used > 0); + mlog_write_ulint(seg_inode + FSEG_NOT_FULL_N_USED, + not_full_n_used - 1, MLOG_4BYTES, mtr); + } + + xdes_set_bit(descr, XDES_FREE_BIT, page % FSP_EXTENT_SIZE, TRUE, mtr); + xdes_set_bit(descr, XDES_CLEAN_BIT, page % FSP_EXTENT_SIZE, TRUE, mtr); + + if (xdes_is_free(descr, mtr)) { + /* The extent has become free: free it to space */ + flst_remove(seg_inode + FSEG_NOT_FULL, + descr + XDES_FLST_NODE, mtr); + fsp_free_extent(space, zip_size, page, mtr); + } +} + +/************************************************************************** +Frees a single page of a segment. */ +UNIV_INTERN +void +fseg_free_page( +/*===========*/ + fseg_header_t* seg_header, /* in: segment header */ + ulint space, /* in: space id */ + ulint page, /* in: page offset */ + mtr_t* mtr) /* in: mtr handle */ +{ + ulint flags; + ulint zip_size; + fseg_inode_t* seg_inode; + rw_lock_t* latch; + + latch = fil_space_get_latch(space, &flags); + zip_size = dict_table_flags_to_zip_size(flags); + + ut_ad(!mutex_own(&kernel_mutex) + || mtr_memo_contains(mtr, latch, MTR_MEMO_X_LOCK)); + + mtr_x_lock(latch, mtr); + + seg_inode = fseg_inode_get(seg_header, space, zip_size, mtr); + + fseg_free_page_low(seg_inode, space, zip_size, page, mtr); + +#ifdef UNIV_DEBUG_FILE_ACCESSES + buf_page_set_file_page_was_freed(space, page); +#endif +} + +/************************************************************************** +Frees an extent of a segment to the space free list. */ +static +void +fseg_free_extent( +/*=============*/ + fseg_inode_t* seg_inode, /* in: segment inode */ + ulint space, /* in: space id */ + ulint zip_size,/* in: compressed page size in bytes + or 0 for uncompressed pages */ + ulint page, /* in: a page in the extent */ + mtr_t* mtr) /* in: mtr handle */ +{ + ulint first_page_in_extent; + xdes_t* descr; + ulint not_full_n_used; + ulint descr_n_used; + ulint i; + + ut_ad(seg_inode && mtr); + + descr = xdes_get_descriptor(space, zip_size, page, mtr); + + ut_a(xdes_get_state(descr, mtr) == XDES_FSEG); + ut_a(0 == ut_dulint_cmp(mtr_read_dulint(descr + XDES_ID, mtr), + mtr_read_dulint(seg_inode + FSEG_ID, mtr))); + + first_page_in_extent = page - (page % FSP_EXTENT_SIZE); + + for (i = 0; i < FSP_EXTENT_SIZE; i++) { + if (FALSE == xdes_get_bit(descr, XDES_FREE_BIT, i, mtr)) { + + /* Drop search system page hash index if the page is + found in the pool and is hashed */ + + btr_search_drop_page_hash_when_freed( + space, zip_size, first_page_in_extent + i); + } + } + + if (xdes_is_full(descr, mtr)) { + flst_remove(seg_inode + FSEG_FULL, + descr + XDES_FLST_NODE, mtr); + } else if (xdes_is_free(descr, mtr)) { + flst_remove(seg_inode + FSEG_FREE, + descr + XDES_FLST_NODE, mtr); + } else { + flst_remove(seg_inode + FSEG_NOT_FULL, + descr + XDES_FLST_NODE, mtr); + + not_full_n_used = mtr_read_ulint( + seg_inode + FSEG_NOT_FULL_N_USED, MLOG_4BYTES, mtr); + + descr_n_used = xdes_get_n_used(descr, mtr); + ut_a(not_full_n_used >= descr_n_used); + mlog_write_ulint(seg_inode + FSEG_NOT_FULL_N_USED, + not_full_n_used - descr_n_used, + MLOG_4BYTES, mtr); + } + + fsp_free_extent(space, zip_size, page, mtr); + +#ifdef UNIV_DEBUG_FILE_ACCESSES + for (i = 0; i < FSP_EXTENT_SIZE; i++) { + + buf_page_set_file_page_was_freed(space, + first_page_in_extent + i); + } +#endif +} + +/************************************************************************** +Frees part of a segment. This function can be used to free a segment by +repeatedly calling this function in different mini-transactions. Doing +the freeing in a single mini-transaction might result in too big a +mini-transaction. */ +UNIV_INTERN +ibool +fseg_free_step( +/*===========*/ + /* out: TRUE if freeing completed */ + fseg_header_t* header, /* in, own: segment header; NOTE: if the header + resides on the first page of the frag list + of the segment, this pointer becomes obsolete + after the last freeing step */ + mtr_t* mtr) /* in: mtr */ +{ + ulint n; + ulint page; + xdes_t* descr; + fseg_inode_t* inode; + ulint space; + ulint flags; + ulint zip_size; + ulint header_page; + rw_lock_t* latch; + + space = page_get_space_id(page_align(header)); + header_page = page_get_page_no(page_align(header)); + + latch = fil_space_get_latch(space, &flags); + zip_size = dict_table_flags_to_zip_size(flags); + + ut_ad(!mutex_own(&kernel_mutex) + || mtr_memo_contains(mtr, latch, MTR_MEMO_X_LOCK)); + + mtr_x_lock(latch, mtr); + + descr = xdes_get_descriptor(space, zip_size, header_page, mtr); + + /* Check that the header resides on a page which has not been + freed yet */ + + ut_a(descr); + ut_a(xdes_get_bit(descr, XDES_FREE_BIT, + header_page % FSP_EXTENT_SIZE, mtr) == FALSE); + inode = fseg_inode_get(header, space, zip_size, mtr); + + descr = fseg_get_first_extent(inode, space, zip_size, mtr); + + if (descr != NULL) { + /* Free the extent held by the segment */ + page = xdes_get_offset(descr); + + fseg_free_extent(inode, space, zip_size, page, mtr); + + return(FALSE); + } + + /* Free a frag page */ + n = fseg_find_last_used_frag_page_slot(inode, mtr); + + if (n == ULINT_UNDEFINED) { + /* Freeing completed: free the segment inode */ + fsp_free_seg_inode(space, zip_size, inode, mtr); + + return(TRUE); + } + + fseg_free_page_low(inode, space, zip_size, + fseg_get_nth_frag_page_no(inode, n, mtr), mtr); + + n = fseg_find_last_used_frag_page_slot(inode, mtr); + + if (n == ULINT_UNDEFINED) { + /* Freeing completed: free the segment inode */ + fsp_free_seg_inode(space, zip_size, inode, mtr); + + return(TRUE); + } + + return(FALSE); +} + +/************************************************************************** +Frees part of a segment. Differs from fseg_free_step because this function +leaves the header page unfreed. */ +UNIV_INTERN +ibool +fseg_free_step_not_header( +/*======================*/ + /* out: TRUE if freeing completed, except the + header page */ + fseg_header_t* header, /* in: segment header which must reside on + the first fragment page of the segment */ + mtr_t* mtr) /* in: mtr */ +{ + ulint n; + ulint page; + xdes_t* descr; + fseg_inode_t* inode; + ulint space; + ulint flags; + ulint zip_size; + ulint page_no; + rw_lock_t* latch; + + space = page_get_space_id(page_align(header)); + + latch = fil_space_get_latch(space, &flags); + zip_size = dict_table_flags_to_zip_size(flags); + + ut_ad(!mutex_own(&kernel_mutex) + || mtr_memo_contains(mtr, latch, MTR_MEMO_X_LOCK)); + + mtr_x_lock(latch, mtr); + + inode = fseg_inode_get(header, space, zip_size, mtr); + + descr = fseg_get_first_extent(inode, space, zip_size, mtr); + + if (descr != NULL) { + /* Free the extent held by the segment */ + page = xdes_get_offset(descr); + + fseg_free_extent(inode, space, zip_size, page, mtr); + + return(FALSE); + } + + /* Free a frag page */ + + n = fseg_find_last_used_frag_page_slot(inode, mtr); + + if (n == ULINT_UNDEFINED) { + ut_error; + } + + page_no = fseg_get_nth_frag_page_no(inode, n, mtr); + + if (page_no == page_get_page_no(page_align(header))) { + + return(TRUE); + } + + fseg_free_page_low(inode, space, zip_size, page_no, mtr); + + return(FALSE); +} + +/*********************************************************************** +Frees a segment. The freeing is performed in several mini-transactions, +so that there is no danger of bufferfixing too many buffer pages. */ +UNIV_INTERN +void +fseg_free( +/*======*/ + ulint space, /* in: space id */ + ulint zip_size,/* in: compressed page size in bytes + or 0 for uncompressed pages */ + ulint page_no,/* in: page number where the segment header is + placed */ + ulint offset) /* in: byte offset of the segment header on that + page */ +{ + mtr_t mtr; + ibool finished; + fseg_header_t* header; + fil_addr_t addr; + + addr.page = page_no; + addr.boffset = offset; + + for (;;) { + mtr_start(&mtr); + + header = fut_get_ptr(space, zip_size, addr, RW_X_LATCH, &mtr); + + finished = fseg_free_step(header, &mtr); + + mtr_commit(&mtr); + + if (finished) { + + return; + } + } +} + +/************************************************************************** +Returns the first extent descriptor for a segment. We think of the extent +lists of the segment catenated in the order FSEG_FULL -> FSEG_NOT_FULL +-> FSEG_FREE. */ +static +xdes_t* +fseg_get_first_extent( +/*==================*/ + /* out: the first extent descriptor, or NULL if + none */ + fseg_inode_t* inode, /* in: segment inode */ + ulint space, /* in: space id */ + ulint zip_size,/* in: compressed page size in bytes + or 0 for uncompressed pages */ + mtr_t* mtr) /* in: mtr */ +{ + fil_addr_t first; + xdes_t* descr; + + ut_ad(inode && mtr); + + ut_ad(space == page_get_space_id(page_align(inode))); + + first = fil_addr_null; + + if (flst_get_len(inode + FSEG_FULL, mtr) > 0) { + + first = flst_get_first(inode + FSEG_FULL, mtr); + + } else if (flst_get_len(inode + FSEG_NOT_FULL, mtr) > 0) { + + first = flst_get_first(inode + FSEG_NOT_FULL, mtr); + + } else if (flst_get_len(inode + FSEG_FREE, mtr) > 0) { + + first = flst_get_first(inode + FSEG_FREE, mtr); + } + + if (first.page == FIL_NULL) { + + return(NULL); + } + descr = xdes_lst_get_descriptor(space, zip_size, first, mtr); + + return(descr); +} + +/*********************************************************************** +Validates a segment. */ +static +ibool +fseg_validate_low( +/*==============*/ + /* out: TRUE if ok */ + fseg_inode_t* inode, /* in: segment inode */ + mtr_t* mtr2) /* in: mtr */ +{ + ulint space; + dulint seg_id; + mtr_t mtr; + xdes_t* descr; + fil_addr_t node_addr; + ulint n_used = 0; + ulint n_used2 = 0; + + ut_ad(mtr_memo_contains_page(mtr2, inode, MTR_MEMO_PAGE_X_FIX)); + ut_ad(mach_read_from_4(inode + FSEG_MAGIC_N) == FSEG_MAGIC_N_VALUE); + + space = page_get_space_id(page_align(inode)); + + seg_id = mtr_read_dulint(inode + FSEG_ID, mtr2); + n_used = mtr_read_ulint(inode + FSEG_NOT_FULL_N_USED, + MLOG_4BYTES, mtr2); + flst_validate(inode + FSEG_FREE, mtr2); + flst_validate(inode + FSEG_NOT_FULL, mtr2); + flst_validate(inode + FSEG_FULL, mtr2); + + /* Validate FSEG_FREE list */ + node_addr = flst_get_first(inode + FSEG_FREE, mtr2); + + while (!fil_addr_is_null(node_addr)) { + ulint flags; + ulint zip_size; + + mtr_start(&mtr); + mtr_x_lock(fil_space_get_latch(space, &flags), &mtr); + zip_size = dict_table_flags_to_zip_size(flags); + + descr = xdes_lst_get_descriptor(space, zip_size, + node_addr, &mtr); + + ut_a(xdes_get_n_used(descr, &mtr) == 0); + ut_a(xdes_get_state(descr, &mtr) == XDES_FSEG); + ut_a(!ut_dulint_cmp(mtr_read_dulint(descr + XDES_ID, &mtr), + seg_id)); + + node_addr = flst_get_next_addr(descr + XDES_FLST_NODE, &mtr); + mtr_commit(&mtr); + } + + /* Validate FSEG_NOT_FULL list */ + + node_addr = flst_get_first(inode + FSEG_NOT_FULL, mtr2); + + while (!fil_addr_is_null(node_addr)) { + ulint flags; + ulint zip_size; + + mtr_start(&mtr); + mtr_x_lock(fil_space_get_latch(space, &flags), &mtr); + zip_size = dict_table_flags_to_zip_size(flags); + + descr = xdes_lst_get_descriptor(space, zip_size, + node_addr, &mtr); + + ut_a(xdes_get_n_used(descr, &mtr) > 0); + ut_a(xdes_get_n_used(descr, &mtr) < FSP_EXTENT_SIZE); + ut_a(xdes_get_state(descr, &mtr) == XDES_FSEG); + ut_a(!ut_dulint_cmp(mtr_read_dulint(descr + XDES_ID, &mtr), + seg_id)); + + n_used2 += xdes_get_n_used(descr, &mtr); + + node_addr = flst_get_next_addr(descr + XDES_FLST_NODE, &mtr); + mtr_commit(&mtr); + } + + /* Validate FSEG_FULL list */ + + node_addr = flst_get_first(inode + FSEG_FULL, mtr2); + + while (!fil_addr_is_null(node_addr)) { + ulint flags; + ulint zip_size; + + mtr_start(&mtr); + mtr_x_lock(fil_space_get_latch(space, &flags), &mtr); + zip_size = dict_table_flags_to_zip_size(flags); + + descr = xdes_lst_get_descriptor(space, zip_size, + node_addr, &mtr); + + ut_a(xdes_get_n_used(descr, &mtr) == FSP_EXTENT_SIZE); + ut_a(xdes_get_state(descr, &mtr) == XDES_FSEG); + ut_a(!ut_dulint_cmp(mtr_read_dulint(descr + XDES_ID, &mtr), + seg_id)); + + node_addr = flst_get_next_addr(descr + XDES_FLST_NODE, &mtr); + mtr_commit(&mtr); + } + + ut_a(n_used == n_used2); + + return(TRUE); +} + +/*********************************************************************** +Validates a segment. */ +UNIV_INTERN +ibool +fseg_validate( +/*==========*/ + /* out: TRUE if ok */ + fseg_header_t* header, /* in: segment header */ + mtr_t* mtr) /* in: mtr */ +{ + fseg_inode_t* inode; + ibool ret; + ulint space; + ulint flags; + ulint zip_size; + + space = page_get_space_id(page_align(header)); + + mtr_x_lock(fil_space_get_latch(space, &flags), mtr); + zip_size = dict_table_flags_to_zip_size(flags); + + inode = fseg_inode_get(header, space, zip_size, mtr); + + ret = fseg_validate_low(inode, mtr); + + return(ret); +} + +/*********************************************************************** +Writes info of a segment. */ +static +void +fseg_print_low( +/*===========*/ + fseg_inode_t* inode, /* in: segment inode */ + mtr_t* mtr) /* in: mtr */ +{ + ulint space; + ulint seg_id_low; + ulint seg_id_high; + ulint n_used; + ulint n_frag; + ulint n_free; + ulint n_not_full; + ulint n_full; + ulint reserved; + ulint used; + ulint page_no; + dulint d_var; + + ut_ad(mtr_memo_contains_page(mtr, inode, MTR_MEMO_PAGE_X_FIX)); + space = page_get_space_id(page_align(inode)); + page_no = page_get_page_no(page_align(inode)); + + reserved = fseg_n_reserved_pages_low(inode, &used, mtr); + + d_var = mtr_read_dulint(inode + FSEG_ID, mtr); + + seg_id_low = ut_dulint_get_low(d_var); + seg_id_high = ut_dulint_get_high(d_var); + + n_used = mtr_read_ulint(inode + FSEG_NOT_FULL_N_USED, + MLOG_4BYTES, mtr); + n_frag = fseg_get_n_frag_pages(inode, mtr); + n_free = flst_get_len(inode + FSEG_FREE, mtr); + n_not_full = flst_get_len(inode + FSEG_NOT_FULL, mtr); + n_full = flst_get_len(inode + FSEG_FULL, mtr); + + fprintf(stderr, + "SEGMENT id %lu %lu space %lu; page %lu;" + " res %lu used %lu; full ext %lu\n" + "fragm pages %lu; free extents %lu;" + " not full extents %lu: pages %lu\n", + (ulong) seg_id_high, (ulong) seg_id_low, + (ulong) space, (ulong) page_no, + (ulong) reserved, (ulong) used, (ulong) n_full, + (ulong) n_frag, (ulong) n_free, (ulong) n_not_full, + (ulong) n_used); +} + +#ifdef UNIV_BTR_PRINT +/*********************************************************************** +Writes info of a segment. */ +UNIV_INTERN +void +fseg_print( +/*=======*/ + fseg_header_t* header, /* in: segment header */ + mtr_t* mtr) /* in: mtr */ +{ + fseg_inode_t* inode; + ulint space; + ulint flags; + ulint zip_size; + + space = page_get_space_id(page_align(header)); + + mtr_x_lock(fil_space_get_latch(space, &flags), mtr); + zip_size = dict_table_flags_to_zip_size(flags); + + inode = fseg_inode_get(header, space, zip_size, mtr); + + fseg_print_low(inode, mtr); +} +#endif /* UNIV_BTR_PRINT */ + +/*********************************************************************** +Validates the file space system and its segments. */ +UNIV_INTERN +ibool +fsp_validate( +/*=========*/ + /* out: TRUE if ok */ + ulint space) /* in: space id */ +{ + fsp_header_t* header; + fseg_inode_t* seg_inode; + page_t* seg_inode_page; + rw_lock_t* latch; + ulint size; + ulint flags; + ulint zip_size; + ulint free_limit; + ulint frag_n_used; + mtr_t mtr; + mtr_t mtr2; + xdes_t* descr; + fil_addr_t node_addr; + fil_addr_t next_node_addr; + ulint descr_count = 0; + ulint n_used = 0; + ulint n_used2 = 0; + ulint n_full_frag_pages; + ulint n; + ulint seg_inode_len_free; + ulint seg_inode_len_full; + + latch = fil_space_get_latch(space, &flags); + zip_size = dict_table_flags_to_zip_size(flags); + ut_a(ut_is_2pow(zip_size)); + ut_a(zip_size <= UNIV_PAGE_SIZE); + ut_a(!zip_size || zip_size >= PAGE_ZIP_MIN_SIZE); + + /* Start first a mini-transaction mtr2 to lock out all other threads + from the fsp system */ + mtr_start(&mtr2); + mtr_x_lock(latch, &mtr2); + + mtr_start(&mtr); + mtr_x_lock(latch, &mtr); + + header = fsp_get_space_header(space, zip_size, &mtr); + + size = mtr_read_ulint(header + FSP_SIZE, MLOG_4BYTES, &mtr); + free_limit = mtr_read_ulint(header + FSP_FREE_LIMIT, + MLOG_4BYTES, &mtr); + frag_n_used = mtr_read_ulint(header + FSP_FRAG_N_USED, + MLOG_4BYTES, &mtr); + + n_full_frag_pages = FSP_EXTENT_SIZE + * flst_get_len(header + FSP_FULL_FRAG, &mtr); + + if (UNIV_UNLIKELY(free_limit > size)) { + + ut_a(space != 0); + ut_a(size < FSP_EXTENT_SIZE); + } + + flst_validate(header + FSP_FREE, &mtr); + flst_validate(header + FSP_FREE_FRAG, &mtr); + flst_validate(header + FSP_FULL_FRAG, &mtr); + + mtr_commit(&mtr); + + /* Validate FSP_FREE list */ + mtr_start(&mtr); + mtr_x_lock(latch, &mtr); + + header = fsp_get_space_header(space, zip_size, &mtr); + node_addr = flst_get_first(header + FSP_FREE, &mtr); + + mtr_commit(&mtr); + + while (!fil_addr_is_null(node_addr)) { + mtr_start(&mtr); + mtr_x_lock(latch, &mtr); + + descr_count++; + descr = xdes_lst_get_descriptor(space, zip_size, + node_addr, &mtr); + + ut_a(xdes_get_n_used(descr, &mtr) == 0); + ut_a(xdes_get_state(descr, &mtr) == XDES_FREE); + + node_addr = flst_get_next_addr(descr + XDES_FLST_NODE, &mtr); + mtr_commit(&mtr); + } + + /* Validate FSP_FREE_FRAG list */ + mtr_start(&mtr); + mtr_x_lock(latch, &mtr); + + header = fsp_get_space_header(space, zip_size, &mtr); + node_addr = flst_get_first(header + FSP_FREE_FRAG, &mtr); + + mtr_commit(&mtr); + + while (!fil_addr_is_null(node_addr)) { + mtr_start(&mtr); + mtr_x_lock(latch, &mtr); + + descr_count++; + descr = xdes_lst_get_descriptor(space, zip_size, + node_addr, &mtr); + + ut_a(xdes_get_n_used(descr, &mtr) > 0); + ut_a(xdes_get_n_used(descr, &mtr) < FSP_EXTENT_SIZE); + ut_a(xdes_get_state(descr, &mtr) == XDES_FREE_FRAG); + + n_used += xdes_get_n_used(descr, &mtr); + node_addr = flst_get_next_addr(descr + XDES_FLST_NODE, &mtr); + + mtr_commit(&mtr); + } + + /* Validate FSP_FULL_FRAG list */ + mtr_start(&mtr); + mtr_x_lock(latch, &mtr); + + header = fsp_get_space_header(space, zip_size, &mtr); + node_addr = flst_get_first(header + FSP_FULL_FRAG, &mtr); + + mtr_commit(&mtr); + + while (!fil_addr_is_null(node_addr)) { + mtr_start(&mtr); + mtr_x_lock(latch, &mtr); + + descr_count++; + descr = xdes_lst_get_descriptor(space, zip_size, + node_addr, &mtr); + + ut_a(xdes_get_n_used(descr, &mtr) == FSP_EXTENT_SIZE); + ut_a(xdes_get_state(descr, &mtr) == XDES_FULL_FRAG); + + node_addr = flst_get_next_addr(descr + XDES_FLST_NODE, &mtr); + mtr_commit(&mtr); + } + + /* Validate segments */ + mtr_start(&mtr); + mtr_x_lock(latch, &mtr); + + header = fsp_get_space_header(space, zip_size, &mtr); + + node_addr = flst_get_first(header + FSP_SEG_INODES_FULL, &mtr); + + seg_inode_len_full = flst_get_len(header + FSP_SEG_INODES_FULL, &mtr); + + mtr_commit(&mtr); + + while (!fil_addr_is_null(node_addr)) { + + n = 0; + do { + mtr_start(&mtr); + mtr_x_lock(latch, &mtr); + + seg_inode_page = fut_get_ptr( + space, zip_size, node_addr, RW_X_LATCH, &mtr) + - FSEG_INODE_PAGE_NODE; + + seg_inode = fsp_seg_inode_page_get_nth_inode( + seg_inode_page, n, zip_size, &mtr); + ut_a(!ut_dulint_is_zero( + mach_read_from_8(seg_inode + FSEG_ID))); + fseg_validate_low(seg_inode, &mtr); + + descr_count += flst_get_len(seg_inode + FSEG_FREE, + &mtr); + descr_count += flst_get_len(seg_inode + FSEG_FULL, + &mtr); + descr_count += flst_get_len(seg_inode + FSEG_NOT_FULL, + &mtr); + + n_used2 += fseg_get_n_frag_pages(seg_inode, &mtr); + + next_node_addr = flst_get_next_addr( + seg_inode_page + FSEG_INODE_PAGE_NODE, &mtr); + mtr_commit(&mtr); + } while (++n < FSP_SEG_INODES_PER_PAGE(zip_size)); + + node_addr = next_node_addr; + } + + mtr_start(&mtr); + mtr_x_lock(latch, &mtr); + + header = fsp_get_space_header(space, zip_size, &mtr); + + node_addr = flst_get_first(header + FSP_SEG_INODES_FREE, &mtr); + + seg_inode_len_free = flst_get_len(header + FSP_SEG_INODES_FREE, &mtr); + + mtr_commit(&mtr); + + while (!fil_addr_is_null(node_addr)) { + + n = 0; + + do { + mtr_start(&mtr); + mtr_x_lock(latch, &mtr); + + seg_inode_page = fut_get_ptr( + space, zip_size, node_addr, RW_X_LATCH, &mtr) + - FSEG_INODE_PAGE_NODE; + + seg_inode = fsp_seg_inode_page_get_nth_inode( + seg_inode_page, n, zip_size, &mtr); + if (!ut_dulint_is_zero( + mach_read_from_8(seg_inode + FSEG_ID))) { + fseg_validate_low(seg_inode, &mtr); + + descr_count += flst_get_len( + seg_inode + FSEG_FREE, &mtr); + descr_count += flst_get_len( + seg_inode + FSEG_FULL, &mtr); + descr_count += flst_get_len( + seg_inode + FSEG_NOT_FULL, &mtr); + n_used2 += fseg_get_n_frag_pages( + seg_inode, &mtr); + } + + next_node_addr = flst_get_next_addr( + seg_inode_page + FSEG_INODE_PAGE_NODE, &mtr); + mtr_commit(&mtr); + } while (++n < FSP_SEG_INODES_PER_PAGE(zip_size)); + + node_addr = next_node_addr; + } + + ut_a(descr_count * FSP_EXTENT_SIZE == free_limit); + if (!zip_size) { + ut_a(n_used + n_full_frag_pages + == n_used2 + 2 * ((free_limit + (UNIV_PAGE_SIZE - 1)) + / UNIV_PAGE_SIZE) + + seg_inode_len_full + seg_inode_len_free); + } else { + ut_a(n_used + n_full_frag_pages + == n_used2 + 2 * ((free_limit + (zip_size - 1)) + / zip_size) + + seg_inode_len_full + seg_inode_len_free); + } + ut_a(frag_n_used == n_used); + + mtr_commit(&mtr2); + + return(TRUE); +} + +/*********************************************************************** +Prints info of a file space. */ +UNIV_INTERN +void +fsp_print( +/*======*/ + ulint space) /* in: space id */ +{ + fsp_header_t* header; + fseg_inode_t* seg_inode; + page_t* seg_inode_page; + rw_lock_t* latch; + ulint flags; + ulint zip_size; + ulint size; + ulint free_limit; + ulint frag_n_used; + fil_addr_t node_addr; + fil_addr_t next_node_addr; + ulint n_free; + ulint n_free_frag; + ulint n_full_frag; + ulint seg_id_low; + ulint seg_id_high; + ulint n; + ulint n_segs = 0; + dulint d_var; + mtr_t mtr; + mtr_t mtr2; + + latch = fil_space_get_latch(space, &flags); + zip_size = dict_table_flags_to_zip_size(flags); + + /* Start first a mini-transaction mtr2 to lock out all other threads + from the fsp system */ + + mtr_start(&mtr2); + + mtr_x_lock(latch, &mtr2); + + mtr_start(&mtr); + + mtr_x_lock(latch, &mtr); + + header = fsp_get_space_header(space, zip_size, &mtr); + + size = mtr_read_ulint(header + FSP_SIZE, MLOG_4BYTES, &mtr); + + free_limit = mtr_read_ulint(header + FSP_FREE_LIMIT, MLOG_4BYTES, + &mtr); + frag_n_used = mtr_read_ulint(header + FSP_FRAG_N_USED, MLOG_4BYTES, + &mtr); + n_free = flst_get_len(header + FSP_FREE, &mtr); + n_free_frag = flst_get_len(header + FSP_FREE_FRAG, &mtr); + n_full_frag = flst_get_len(header + FSP_FULL_FRAG, &mtr); + + d_var = mtr_read_dulint(header + FSP_SEG_ID, &mtr); + + seg_id_low = ut_dulint_get_low(d_var); + seg_id_high = ut_dulint_get_high(d_var); + + fprintf(stderr, + "FILE SPACE INFO: id %lu\n" + "size %lu, free limit %lu, free extents %lu\n" + "not full frag extents %lu: used pages %lu," + " full frag extents %lu\n" + "first seg id not used %lu %lu\n", + (ulong) space, + (ulong) size, (ulong) free_limit, (ulong) n_free, + (ulong) n_free_frag, (ulong) frag_n_used, (ulong) n_full_frag, + (ulong) seg_id_high, (ulong) seg_id_low); + + mtr_commit(&mtr); + + /* Print segments */ + + mtr_start(&mtr); + mtr_x_lock(latch, &mtr); + + header = fsp_get_space_header(space, zip_size, &mtr); + + node_addr = flst_get_first(header + FSP_SEG_INODES_FULL, &mtr); + + mtr_commit(&mtr); + + while (!fil_addr_is_null(node_addr)) { + + n = 0; + + do { + + mtr_start(&mtr); + mtr_x_lock(latch, &mtr); + + seg_inode_page = fut_get_ptr( + space, zip_size, node_addr, RW_X_LATCH, &mtr) + - FSEG_INODE_PAGE_NODE; + + seg_inode = fsp_seg_inode_page_get_nth_inode( + seg_inode_page, n, zip_size, &mtr); + ut_a(!ut_dulint_is_zero( + mach_read_from_8(seg_inode + FSEG_ID))); + fseg_print_low(seg_inode, &mtr); + + n_segs++; + + next_node_addr = flst_get_next_addr( + seg_inode_page + FSEG_INODE_PAGE_NODE, &mtr); + mtr_commit(&mtr); + } while (++n < FSP_SEG_INODES_PER_PAGE(zip_size)); + + node_addr = next_node_addr; + } + + mtr_start(&mtr); + mtr_x_lock(latch, &mtr); + + header = fsp_get_space_header(space, zip_size, &mtr); + + node_addr = flst_get_first(header + FSP_SEG_INODES_FREE, &mtr); + + mtr_commit(&mtr); + + while (!fil_addr_is_null(node_addr)) { + + n = 0; + + do { + + mtr_start(&mtr); + mtr_x_lock(latch, &mtr); + + seg_inode_page = fut_get_ptr( + space, zip_size, node_addr, RW_X_LATCH, &mtr) + - FSEG_INODE_PAGE_NODE; + + seg_inode = fsp_seg_inode_page_get_nth_inode( + seg_inode_page, n, zip_size, &mtr); + if (!ut_dulint_is_zero( + mach_read_from_8(seg_inode + FSEG_ID))) { + + fseg_print_low(seg_inode, &mtr); + n_segs++; + } + + next_node_addr = flst_get_next_addr( + seg_inode_page + FSEG_INODE_PAGE_NODE, &mtr); + mtr_commit(&mtr); + } while (++n < FSP_SEG_INODES_PER_PAGE(zip_size)); + + node_addr = next_node_addr; + } + + mtr_commit(&mtr2); + + fprintf(stderr, "NUMBER of file segments: %lu\n", (ulong) n_segs); +} === added directory 'storage/xtradb/fut' === added file 'storage/xtradb/fut/fut0fut.c' --- a/storage/xtradb/fut/fut0fut.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/fut/fut0fut.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,30 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/********************************************************************** +File-based utilities + +Created 12/13/1995 Heikki Tuuri +***********************************************************************/ + +#include "fut0fut.h" + +#ifdef UNIV_NONINL +#include "fut0fut.ic" +#endif + === added file 'storage/xtradb/fut/fut0lst.c' --- a/storage/xtradb/fut/fut0lst.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/fut/fut0lst.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,529 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/********************************************************************** +File-based list utilities + +Created 11/28/1995 Heikki Tuuri +***********************************************************************/ + +#include "fut0lst.h" + +#ifdef UNIV_NONINL +#include "fut0lst.ic" +#endif + +#include "buf0buf.h" +#include "page0page.h" + +/************************************************************************ +Adds a node to an empty list. */ +static +void +flst_add_to_empty( +/*==============*/ + flst_base_node_t* base, /* in: pointer to base node of + empty list */ + flst_node_t* node, /* in: node to add */ + mtr_t* mtr) /* in: mini-transaction handle */ +{ + ulint space; + fil_addr_t node_addr; + ulint len; + + ut_ad(mtr && base && node); + ut_ad(base != node); + ut_ad(mtr_memo_contains_page(mtr, base, MTR_MEMO_PAGE_X_FIX)); + ut_ad(mtr_memo_contains_page(mtr, node, MTR_MEMO_PAGE_X_FIX)); + len = flst_get_len(base, mtr); + ut_a(len == 0); + + buf_ptr_get_fsp_addr(node, &space, &node_addr); + + /* Update first and last fields of base node */ + flst_write_addr(base + FLST_FIRST, node_addr, mtr); + flst_write_addr(base + FLST_LAST, node_addr, mtr); + + /* Set prev and next fields of node to add */ + flst_write_addr(node + FLST_PREV, fil_addr_null, mtr); + flst_write_addr(node + FLST_NEXT, fil_addr_null, mtr); + + /* Update len of base node */ + mlog_write_ulint(base + FLST_LEN, len + 1, MLOG_4BYTES, mtr); +} + +/************************************************************************ +Adds a node as the last node in a list. */ +UNIV_INTERN +void +flst_add_last( +/*==========*/ + flst_base_node_t* base, /* in: pointer to base node of list */ + flst_node_t* node, /* in: node to add */ + mtr_t* mtr) /* in: mini-transaction handle */ +{ + ulint space; + fil_addr_t node_addr; + ulint len; + fil_addr_t last_addr; + flst_node_t* last_node; + + ut_ad(mtr && base && node); + ut_ad(base != node); + ut_ad(mtr_memo_contains_page(mtr, base, MTR_MEMO_PAGE_X_FIX)); + ut_ad(mtr_memo_contains_page(mtr, node, MTR_MEMO_PAGE_X_FIX)); + len = flst_get_len(base, mtr); + last_addr = flst_get_last(base, mtr); + + buf_ptr_get_fsp_addr(node, &space, &node_addr); + + /* If the list is not empty, call flst_insert_after */ + if (len != 0) { + if (last_addr.page == node_addr.page) { + last_node = page_align(node) + last_addr.boffset; + } else { + ulint zip_size = fil_space_get_zip_size(space); + + last_node = fut_get_ptr(space, zip_size, last_addr, + RW_X_LATCH, mtr); + } + + flst_insert_after(base, last_node, node, mtr); + } else { + /* else call flst_add_to_empty */ + flst_add_to_empty(base, node, mtr); + } +} + +/************************************************************************ +Adds a node as the first node in a list. */ +UNIV_INTERN +void +flst_add_first( +/*===========*/ + flst_base_node_t* base, /* in: pointer to base node of list */ + flst_node_t* node, /* in: node to add */ + mtr_t* mtr) /* in: mini-transaction handle */ +{ + ulint space; + fil_addr_t node_addr; + ulint len; + fil_addr_t first_addr; + flst_node_t* first_node; + + ut_ad(mtr && base && node); + ut_ad(base != node); + ut_ad(mtr_memo_contains_page(mtr, base, MTR_MEMO_PAGE_X_FIX)); + ut_ad(mtr_memo_contains_page(mtr, node, MTR_MEMO_PAGE_X_FIX)); + len = flst_get_len(base, mtr); + first_addr = flst_get_first(base, mtr); + + buf_ptr_get_fsp_addr(node, &space, &node_addr); + + /* If the list is not empty, call flst_insert_before */ + if (len != 0) { + if (first_addr.page == node_addr.page) { + first_node = page_align(node) + first_addr.boffset; + } else { + ulint zip_size = fil_space_get_zip_size(space); + + first_node = fut_get_ptr(space, zip_size, first_addr, + RW_X_LATCH, mtr); + } + + flst_insert_before(base, node, first_node, mtr); + } else { + /* else call flst_add_to_empty */ + flst_add_to_empty(base, node, mtr); + } +} + +/************************************************************************ +Inserts a node after another in a list. */ +UNIV_INTERN +void +flst_insert_after( +/*==============*/ + flst_base_node_t* base, /* in: pointer to base node of list */ + flst_node_t* node1, /* in: node to insert after */ + flst_node_t* node2, /* in: node to add */ + mtr_t* mtr) /* in: mini-transaction handle */ +{ + ulint space; + fil_addr_t node1_addr; + fil_addr_t node2_addr; + flst_node_t* node3; + fil_addr_t node3_addr; + ulint len; + + ut_ad(mtr && node1 && node2 && base); + ut_ad(base != node1); + ut_ad(base != node2); + ut_ad(node2 != node1); + ut_ad(mtr_memo_contains_page(mtr, base, MTR_MEMO_PAGE_X_FIX)); + ut_ad(mtr_memo_contains_page(mtr, node1, MTR_MEMO_PAGE_X_FIX)); + ut_ad(mtr_memo_contains_page(mtr, node2, MTR_MEMO_PAGE_X_FIX)); + + buf_ptr_get_fsp_addr(node1, &space, &node1_addr); + buf_ptr_get_fsp_addr(node2, &space, &node2_addr); + + node3_addr = flst_get_next_addr(node1, mtr); + + /* Set prev and next fields of node2 */ + flst_write_addr(node2 + FLST_PREV, node1_addr, mtr); + flst_write_addr(node2 + FLST_NEXT, node3_addr, mtr); + + if (!fil_addr_is_null(node3_addr)) { + /* Update prev field of node3 */ + ulint zip_size = fil_space_get_zip_size(space); + + node3 = fut_get_ptr(space, zip_size, + node3_addr, RW_X_LATCH, mtr); + flst_write_addr(node3 + FLST_PREV, node2_addr, mtr); + } else { + /* node1 was last in list: update last field in base */ + flst_write_addr(base + FLST_LAST, node2_addr, mtr); + } + + /* Set next field of node1 */ + flst_write_addr(node1 + FLST_NEXT, node2_addr, mtr); + + /* Update len of base node */ + len = flst_get_len(base, mtr); + mlog_write_ulint(base + FLST_LEN, len + 1, MLOG_4BYTES, mtr); +} + +/************************************************************************ +Inserts a node before another in a list. */ +UNIV_INTERN +void +flst_insert_before( +/*===============*/ + flst_base_node_t* base, /* in: pointer to base node of list */ + flst_node_t* node2, /* in: node to insert */ + flst_node_t* node3, /* in: node to insert before */ + mtr_t* mtr) /* in: mini-transaction handle */ +{ + ulint space; + flst_node_t* node1; + fil_addr_t node1_addr; + fil_addr_t node2_addr; + fil_addr_t node3_addr; + ulint len; + + ut_ad(mtr && node2 && node3 && base); + ut_ad(base != node2); + ut_ad(base != node3); + ut_ad(node2 != node3); + ut_ad(mtr_memo_contains_page(mtr, base, MTR_MEMO_PAGE_X_FIX)); + ut_ad(mtr_memo_contains_page(mtr, node2, MTR_MEMO_PAGE_X_FIX)); + ut_ad(mtr_memo_contains_page(mtr, node3, MTR_MEMO_PAGE_X_FIX)); + + buf_ptr_get_fsp_addr(node2, &space, &node2_addr); + buf_ptr_get_fsp_addr(node3, &space, &node3_addr); + + node1_addr = flst_get_prev_addr(node3, mtr); + + /* Set prev and next fields of node2 */ + flst_write_addr(node2 + FLST_PREV, node1_addr, mtr); + flst_write_addr(node2 + FLST_NEXT, node3_addr, mtr); + + if (!fil_addr_is_null(node1_addr)) { + ulint zip_size = fil_space_get_zip_size(space); + /* Update next field of node1 */ + node1 = fut_get_ptr(space, zip_size, node1_addr, + RW_X_LATCH, mtr); + flst_write_addr(node1 + FLST_NEXT, node2_addr, mtr); + } else { + /* node3 was first in list: update first field in base */ + flst_write_addr(base + FLST_FIRST, node2_addr, mtr); + } + + /* Set prev field of node3 */ + flst_write_addr(node3 + FLST_PREV, node2_addr, mtr); + + /* Update len of base node */ + len = flst_get_len(base, mtr); + mlog_write_ulint(base + FLST_LEN, len + 1, MLOG_4BYTES, mtr); +} + +/************************************************************************ +Removes a node. */ +UNIV_INTERN +void +flst_remove( +/*========*/ + flst_base_node_t* base, /* in: pointer to base node of list */ + flst_node_t* node2, /* in: node to remove */ + mtr_t* mtr) /* in: mini-transaction handle */ +{ + ulint space; + ulint zip_size; + flst_node_t* node1; + fil_addr_t node1_addr; + fil_addr_t node2_addr; + flst_node_t* node3; + fil_addr_t node3_addr; + ulint len; + + ut_ad(mtr && node2 && base); + ut_ad(mtr_memo_contains_page(mtr, base, MTR_MEMO_PAGE_X_FIX)); + ut_ad(mtr_memo_contains_page(mtr, node2, MTR_MEMO_PAGE_X_FIX)); + + buf_ptr_get_fsp_addr(node2, &space, &node2_addr); + zip_size = fil_space_get_zip_size(space); + + node1_addr = flst_get_prev_addr(node2, mtr); + node3_addr = flst_get_next_addr(node2, mtr); + + if (!fil_addr_is_null(node1_addr)) { + + /* Update next field of node1 */ + + if (node1_addr.page == node2_addr.page) { + + node1 = page_align(node2) + node1_addr.boffset; + } else { + node1 = fut_get_ptr(space, zip_size, + node1_addr, RW_X_LATCH, mtr); + } + + ut_ad(node1 != node2); + + flst_write_addr(node1 + FLST_NEXT, node3_addr, mtr); + } else { + /* node2 was first in list: update first field in base */ + flst_write_addr(base + FLST_FIRST, node3_addr, mtr); + } + + if (!fil_addr_is_null(node3_addr)) { + /* Update prev field of node3 */ + + if (node3_addr.page == node2_addr.page) { + + node3 = page_align(node2) + node3_addr.boffset; + } else { + node3 = fut_get_ptr(space, zip_size, + node3_addr, RW_X_LATCH, mtr); + } + + ut_ad(node2 != node3); + + flst_write_addr(node3 + FLST_PREV, node1_addr, mtr); + } else { + /* node2 was last in list: update last field in base */ + flst_write_addr(base + FLST_LAST, node1_addr, mtr); + } + + /* Update len of base node */ + len = flst_get_len(base, mtr); + ut_ad(len > 0); + + mlog_write_ulint(base + FLST_LEN, len - 1, MLOG_4BYTES, mtr); +} + +/************************************************************************ +Cuts off the tail of the list, including the node given. The number of +nodes which will be removed must be provided by the caller, as this function +does not measure the length of the tail. */ +UNIV_INTERN +void +flst_cut_end( +/*=========*/ + flst_base_node_t* base, /* in: pointer to base node of list */ + flst_node_t* node2, /* in: first node to remove */ + ulint n_nodes,/* in: number of nodes to remove, + must be >= 1 */ + mtr_t* mtr) /* in: mini-transaction handle */ +{ + ulint space; + flst_node_t* node1; + fil_addr_t node1_addr; + fil_addr_t node2_addr; + ulint len; + + ut_ad(mtr && node2 && base); + ut_ad(mtr_memo_contains_page(mtr, base, MTR_MEMO_PAGE_X_FIX)); + ut_ad(mtr_memo_contains_page(mtr, node2, MTR_MEMO_PAGE_X_FIX)); + ut_ad(n_nodes > 0); + + buf_ptr_get_fsp_addr(node2, &space, &node2_addr); + + node1_addr = flst_get_prev_addr(node2, mtr); + + if (!fil_addr_is_null(node1_addr)) { + + /* Update next field of node1 */ + + if (node1_addr.page == node2_addr.page) { + + node1 = page_align(node2) + node1_addr.boffset; + } else { + node1 = fut_get_ptr(space, + fil_space_get_zip_size(space), + node1_addr, RW_X_LATCH, mtr); + } + + flst_write_addr(node1 + FLST_NEXT, fil_addr_null, mtr); + } else { + /* node2 was first in list: update the field in base */ + flst_write_addr(base + FLST_FIRST, fil_addr_null, mtr); + } + + flst_write_addr(base + FLST_LAST, node1_addr, mtr); + + /* Update len of base node */ + len = flst_get_len(base, mtr); + ut_ad(len >= n_nodes); + + mlog_write_ulint(base + FLST_LEN, len - n_nodes, MLOG_4BYTES, mtr); +} + +/************************************************************************ +Cuts off the tail of the list, not including the given node. The number of +nodes which will be removed must be provided by the caller, as this function +does not measure the length of the tail. */ +UNIV_INTERN +void +flst_truncate_end( +/*==============*/ + flst_base_node_t* base, /* in: pointer to base node of list */ + flst_node_t* node2, /* in: first node not to remove */ + ulint n_nodes,/* in: number of nodes to remove */ + mtr_t* mtr) /* in: mini-transaction handle */ +{ + fil_addr_t node2_addr; + ulint len; + ulint space; + + ut_ad(mtr && node2 && base); + ut_ad(mtr_memo_contains_page(mtr, base, MTR_MEMO_PAGE_X_FIX)); + ut_ad(mtr_memo_contains_page(mtr, node2, MTR_MEMO_PAGE_X_FIX)); + if (n_nodes == 0) { + + ut_ad(fil_addr_is_null(flst_get_next_addr(node2, mtr))); + + return; + } + + buf_ptr_get_fsp_addr(node2, &space, &node2_addr); + + /* Update next field of node2 */ + flst_write_addr(node2 + FLST_NEXT, fil_addr_null, mtr); + + flst_write_addr(base + FLST_LAST, node2_addr, mtr); + + /* Update len of base node */ + len = flst_get_len(base, mtr); + ut_ad(len >= n_nodes); + + mlog_write_ulint(base + FLST_LEN, len - n_nodes, MLOG_4BYTES, mtr); +} + +/************************************************************************ +Validates a file-based list. */ +UNIV_INTERN +ibool +flst_validate( +/*==========*/ + /* out: TRUE if ok */ + const flst_base_node_t* base, /* in: pointer to base node of list */ + mtr_t* mtr1) /* in: mtr */ +{ + ulint space; + ulint zip_size; + const flst_node_t* node; + fil_addr_t node_addr; + fil_addr_t base_addr; + ulint len; + ulint i; + mtr_t mtr2; + + ut_ad(base); + ut_ad(mtr_memo_contains_page(mtr1, base, MTR_MEMO_PAGE_X_FIX)); + + /* We use two mini-transaction handles: the first is used to + lock the base node, and prevent other threads from modifying the + list. The second is used to traverse the list. We cannot run the + second mtr without committing it at times, because if the list + is long, then the x-locked pages could fill the buffer resulting + in a deadlock. */ + + /* Find out the space id */ + buf_ptr_get_fsp_addr(base, &space, &base_addr); + zip_size = fil_space_get_zip_size(space); + + len = flst_get_len(base, mtr1); + node_addr = flst_get_first(base, mtr1); + + for (i = 0; i < len; i++) { + mtr_start(&mtr2); + + node = fut_get_ptr(space, zip_size, + node_addr, RW_X_LATCH, &mtr2); + node_addr = flst_get_next_addr(node, &mtr2); + + mtr_commit(&mtr2); /* Commit mtr2 each round to prevent buffer + becoming full */ + } + + ut_a(fil_addr_is_null(node_addr)); + + node_addr = flst_get_last(base, mtr1); + + for (i = 0; i < len; i++) { + mtr_start(&mtr2); + + node = fut_get_ptr(space, zip_size, + node_addr, RW_X_LATCH, &mtr2); + node_addr = flst_get_prev_addr(node, &mtr2); + + mtr_commit(&mtr2); /* Commit mtr2 each round to prevent buffer + becoming full */ + } + + ut_a(fil_addr_is_null(node_addr)); + + return(TRUE); +} + +/************************************************************************ +Prints info of a file-based list. */ +UNIV_INTERN +void +flst_print( +/*=======*/ + const flst_base_node_t* base, /* in: pointer to base node of list */ + mtr_t* mtr) /* in: mtr */ +{ + const buf_frame_t* frame; + ulint len; + + ut_ad(base && mtr); + ut_ad(mtr_memo_contains_page(mtr, base, MTR_MEMO_PAGE_X_FIX)); + frame = page_align((byte*) base); + + len = flst_get_len(base, mtr); + + fprintf(stderr, + "FILE-BASED LIST:\n" + "Base node in space %lu page %lu byte offset %lu; len %lu\n", + (ulong) page_get_space_id(frame), + (ulong) page_get_page_no(frame), + (ulong) page_offset(base), (ulong) len); +} === added directory 'storage/xtradb/ha' === added file 'storage/xtradb/ha/ha0ha.c' --- a/storage/xtradb/ha/ha0ha.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/ha/ha0ha.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,442 @@ +/***************************************************************************** + +Copyright (c) 1994, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/************************************************************************ +The hash table with external chains + +Created 8/22/1994 Heikki Tuuri +*************************************************************************/ + +#include "ha0ha.h" +#ifdef UNIV_NONINL +#include "ha0ha.ic" +#endif + +#ifdef UNIV_DEBUG +# include "buf0buf.h" +#endif /* UNIV_DEBUG */ +#ifdef UNIV_SYNC_DEBUG +# include "btr0sea.h" +#endif /* UNIV_SYNC_DEBUG */ +#include "page0page.h" + +/***************************************************************** +Creates a hash table with >= n array cells. The actual number of cells is +chosen to be a prime number slightly bigger than n. */ +UNIV_INTERN +hash_table_t* +ha_create_func( +/*===========*/ + /* out, own: created table */ + ulint n, /* in: number of array cells */ +#ifdef UNIV_SYNC_DEBUG + ulint mutex_level, /* in: level of the mutexes in the latching + order: this is used in the debug version */ +#endif /* UNIV_SYNC_DEBUG */ + ulint n_mutexes) /* in: number of mutexes to protect the + hash table: must be a power of 2, or 0 */ +{ + hash_table_t* table; + ulint i; + + table = hash_create(n); + +#if defined UNIV_AHI_DEBUG || defined UNIV_DEBUG + table->adaptive = TRUE; +#endif /* UNIV_AHI_DEBUG || UNIV_DEBUG */ + /* Creating MEM_HEAP_BTR_SEARCH type heaps can potentially fail, + but in practise it never should in this case, hence the asserts. */ + + if (n_mutexes == 0) { + table->heap = mem_heap_create_in_btr_search( + ut_min(4096, MEM_MAX_ALLOC_IN_BUF)); + ut_a(table->heap); + + return(table); + } + + hash_create_mutexes(table, n_mutexes, mutex_level); + + table->heaps = mem_alloc(n_mutexes * sizeof(void*)); + + for (i = 0; i < n_mutexes; i++) { + table->heaps[i] = mem_heap_create_in_btr_search(4096); + ut_a(table->heaps[i]); + } + + return(table); +} + +/***************************************************************** +Empties a hash table and frees the memory heaps. */ +UNIV_INTERN +void +ha_clear( +/*=====*/ + hash_table_t* table) /* in, own: hash table */ +{ + ulint i; + ulint n; + +#ifdef UNIV_SYNC_DEBUG + ut_ad(rw_lock_own(&btr_search_latch, RW_LOCK_EXCLUSIVE)); +#endif /* UNIV_SYNC_DEBUG */ + + /* Free the memory heaps. */ + n = table->n_mutexes; + + for (i = 0; i < n; i++) { + mem_heap_free(table->heaps[i]); + } + + /* Clear the hash table. */ + n = hash_get_n_cells(table); + + for (i = 0; i < n; i++) { + hash_get_nth_cell(table, i)->node = NULL; + } +} + +/***************************************************************** +Inserts an entry into a hash table. If an entry with the same fold number +is found, its node is updated to point to the new data, and no new node +is inserted. */ +UNIV_INTERN +ibool +ha_insert_for_fold_func( +/*====================*/ + /* out: TRUE if succeed, FALSE if no more + memory could be allocated */ + hash_table_t* table, /* in: hash table */ + ulint fold, /* in: folded value of data; if a node with + the same fold value already exists, it is + updated to point to the same data, and no new + node is created! */ +#if defined UNIV_AHI_DEBUG || defined UNIV_DEBUG + buf_block_t* block, /* in: buffer block containing the data */ +#endif /* UNIV_AHI_DEBUG || UNIV_DEBUG */ + void* data) /* in: data, must not be NULL */ +{ + hash_cell_t* cell; + ha_node_t* node; + ha_node_t* prev_node; + ulint hash; + + ut_ad(table && data); +#if defined UNIV_AHI_DEBUG || defined UNIV_DEBUG + ut_a(block->frame == page_align(data)); +#endif /* UNIV_AHI_DEBUG || UNIV_DEBUG */ + ut_ad(!table->mutexes || mutex_own(hash_get_mutex(table, fold))); + + hash = hash_calc_hash(fold, table); + + cell = hash_get_nth_cell(table, hash); + + prev_node = cell->node; + + while (prev_node != NULL) { + if (prev_node->fold == fold) { +#if defined UNIV_AHI_DEBUG || defined UNIV_DEBUG + if (table->adaptive) { + buf_block_t* prev_block = prev_node->block; + ut_a(prev_block->frame + == page_align(prev_node->data)); + ut_a(prev_block->n_pointers > 0); + prev_block->n_pointers--; + block->n_pointers++; + } + + prev_node->block = block; +#endif /* UNIV_AHI_DEBUG || UNIV_DEBUG */ + prev_node->data = data; + + return(TRUE); + } + + prev_node = prev_node->next; + } + + /* We have to allocate a new chain node */ + + node = mem_heap_alloc(hash_get_heap(table, fold), sizeof(ha_node_t)); + + if (node == NULL) { + /* It was a btr search type memory heap and at the moment + no more memory could be allocated: return */ + + ut_ad(hash_get_heap(table, fold)->type & MEM_HEAP_BTR_SEARCH); + + return(FALSE); + } + + ha_node_set_data(node, block, data); + +#if defined UNIV_AHI_DEBUG || defined UNIV_DEBUG + if (table->adaptive) { + block->n_pointers++; + } +#endif /* UNIV_AHI_DEBUG || UNIV_DEBUG */ + node->fold = fold; + + node->next = NULL; + + prev_node = cell->node; + + if (prev_node == NULL) { + + cell->node = node; + + return(TRUE); + } + + while (prev_node->next != NULL) { + + prev_node = prev_node->next; + } + + prev_node->next = node; + + return(TRUE); +} + +/*************************************************************** +Deletes a hash node. */ +UNIV_INTERN +void +ha_delete_hash_node( +/*================*/ + hash_table_t* table, /* in: hash table */ + ha_node_t* del_node) /* in: node to be deleted */ +{ +#if defined UNIV_AHI_DEBUG || defined UNIV_DEBUG + if (table->adaptive) { + ut_a(del_node->block->frame = page_align(del_node->data)); + ut_a(del_node->block->n_pointers > 0); + del_node->block->n_pointers--; + } +#endif /* UNIV_AHI_DEBUG || UNIV_DEBUG */ + HASH_DELETE_AND_COMPACT(ha_node_t, next, table, del_node); +} + +/***************************************************************** +Deletes an entry from a hash table. */ +UNIV_INTERN +void +ha_delete( +/*======*/ + hash_table_t* table, /* in: hash table */ + ulint fold, /* in: folded value of data */ + void* data) /* in: data, must not be NULL and must exist + in the hash table */ +{ + ha_node_t* node; + + ut_ad(!table->mutexes || mutex_own(hash_get_mutex(table, fold))); + + node = ha_search_with_data(table, fold, data); + + ut_a(node); + + ha_delete_hash_node(table, node); +} + +/************************************************************* +Looks for an element when we know the pointer to the data, and updates +the pointer to data, if found. */ +UNIV_INTERN +void +ha_search_and_update_if_found_func( +/*===============================*/ + hash_table_t* table, /* in: hash table */ + ulint fold, /* in: folded value of the searched data */ + void* data, /* in: pointer to the data */ +#if defined UNIV_AHI_DEBUG || defined UNIV_DEBUG + buf_block_t* new_block,/* in: block containing new_data */ +#endif /* UNIV_AHI_DEBUG || UNIV_DEBUG */ + void* new_data)/* in: new pointer to the data */ +{ + ha_node_t* node; + + ut_ad(!table->mutexes || mutex_own(hash_get_mutex(table, fold))); +#if defined UNIV_AHI_DEBUG || defined UNIV_DEBUG + ut_a(new_block->frame == page_align(new_data)); +#endif /* UNIV_AHI_DEBUG || UNIV_DEBUG */ + + node = ha_search_with_data(table, fold, data); + + if (node) { +#if defined UNIV_AHI_DEBUG || defined UNIV_DEBUG + if (table->adaptive) { + ut_a(node->block->n_pointers > 0); + node->block->n_pointers--; + new_block->n_pointers++; + } + + node->block = new_block; +#endif /* UNIV_AHI_DEBUG || UNIV_DEBUG */ + node->data = new_data; + } +} + +/********************************************************************* +Removes from the chain determined by fold all nodes whose data pointer +points to the page given. */ +UNIV_INTERN +void +ha_remove_all_nodes_to_page( +/*========================*/ + hash_table_t* table, /* in: hash table */ + ulint fold, /* in: fold value */ + const page_t* page) /* in: buffer page */ +{ + ha_node_t* node; + + ut_ad(!table->mutexes || mutex_own(hash_get_mutex(table, fold))); + + node = ha_chain_get_first(table, fold); + + while (node) { + if (page_align(ha_node_get_data(node)) == page) { + + /* Remove the hash node */ + + ha_delete_hash_node(table, node); + + /* Start again from the first node in the chain + because the deletion may compact the heap of + nodes and move other nodes! */ + + node = ha_chain_get_first(table, fold); + } else { + node = ha_chain_get_next(node); + } + } +#ifdef UNIV_DEBUG + /* Check that all nodes really got deleted */ + + node = ha_chain_get_first(table, fold); + + while (node) { + ut_a(page_align(ha_node_get_data(node)) != page); + + node = ha_chain_get_next(node); + } +#endif +} + +/***************************************************************** +Validates a given range of the cells in hash table. */ +UNIV_INTERN +ibool +ha_validate( +/*========*/ + /* out: TRUE if ok */ + hash_table_t* table, /* in: hash table */ + ulint start_index, /* in: start index */ + ulint end_index) /* in: end index */ +{ + hash_cell_t* cell; + ha_node_t* node; + ibool ok = TRUE; + ulint i; + + ut_a(start_index <= end_index); + ut_a(start_index < hash_get_n_cells(table)); + ut_a(end_index < hash_get_n_cells(table)); + + for (i = start_index; i <= end_index; i++) { + + cell = hash_get_nth_cell(table, i); + + node = cell->node; + + while (node) { + if (hash_calc_hash(node->fold, table) != i) { + ut_print_timestamp(stderr); + fprintf(stderr, + "InnoDB: Error: hash table node" + " fold value %lu does not\n" + "InnoDB: match the cell number %lu.\n", + (ulong) node->fold, (ulong) i); + + ok = FALSE; + } + + node = node->next; + } + } + + return(ok); +} + +/***************************************************************** +Prints info of a hash table. */ +UNIV_INTERN +void +ha_print_info( +/*==========*/ + FILE* file, /* in: file where to print */ + hash_table_t* table) /* in: hash table */ +{ +#ifdef UNIV_DEBUG +/* Some of the code here is disabled for performance reasons in production +builds, see http://bugs.mysql.com/36941 */ +#define PRINT_USED_CELLS +#endif /* UNIV_DEBUG */ + +#ifdef PRINT_USED_CELLS + hash_cell_t* cell; + ulint cells = 0; + ulint i; +#endif /* PRINT_USED_CELLS */ + ulint n_bufs; + +#ifdef PRINT_USED_CELLS + for (i = 0; i < hash_get_n_cells(table); i++) { + + cell = hash_get_nth_cell(table, i); + + if (cell->node) { + + cells++; + } + } +#endif /* PRINT_USED_CELLS */ + + fprintf(file, "Hash table size %lu", + (ulong) hash_get_n_cells(table)); + +#ifdef PRINT_USED_CELLS + fprintf(file, ", used cells %lu", (ulong) cells); +#endif /* PRINT_USED_CELLS */ + + if (table->heaps == NULL && table->heap != NULL) { + + /* This calculation is intended for the adaptive hash + index: how many buffer frames we have reserved? */ + + n_bufs = UT_LIST_GET_LEN(table->heap->base) - 1; + + if (table->heap->free_block) { + n_bufs++; + } + + fprintf(file, ", node heap has %lu buffer(s)\n", + (ulong) n_bufs); + } +} === added file 'storage/xtradb/ha/ha0storage.c' --- a/storage/xtradb/ha/ha0storage.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/ha/ha0storage.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,183 @@ +/***************************************************************************** + +Copyright (c) 2007, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Hash storage. +Provides a data structure that stores chunks of data in +its own storage, avoiding duplicates. + +Created September 22, 2007 Vasil Dimov +*******************************************************/ + +#include "univ.i" +#include "ha0storage.h" +#include "hash0hash.h" +#include "mem0mem.h" +#include "ut0rnd.h" + +#ifdef UNIV_NONINL +#include "ha0storage.ic" +#endif + +/*********************************************************************** +Retrieves a data from a storage. If it is present, a pointer to the +stored copy of data is returned, otherwise NULL is returned. */ +static +const void* +ha_storage_get( +/*===========*/ + ha_storage_t* storage, /* in: hash storage */ + const void* data, /* in: data to check for */ + ulint data_len) /* in: data length */ +{ + ha_storage_node_t* node; + ulint fold; + + /* avoid repetitive calls to ut_fold_binary() in the HASH_SEARCH + macro */ + fold = ut_fold_binary(data, data_len); + +#define IS_FOUND \ + node->data_len == data_len && memcmp(node->data, data, data_len) == 0 + + HASH_SEARCH( + next, /* node->"next" */ + storage->hash, /* the hash table */ + fold, /* key */ + ha_storage_node_t*, /* type of node->next */ + node, /* auxiliary variable */ + , /* assertion */ + IS_FOUND); /* search criteria */ + + if (node == NULL) { + + return(NULL); + } + /* else */ + + return(node->data); +} + +/*********************************************************************** +Copies data into the storage and returns a pointer to the copy. If the +same data chunk is already present, then pointer to it is returned. +Data chunks are considered to be equal if len1 == len2 and +memcmp(data1, data2, len1) == 0. If "data" is not present (and thus +data_len bytes need to be allocated) and the size of storage is going to +become more than "memlim" then "data" is not added and NULL is returned. +To disable this behavior "memlim" can be set to 0, which stands for +"no limit". */ +UNIV_INTERN +const void* +ha_storage_put_memlim( +/*==================*/ + ha_storage_t* storage, /* in/out: hash storage */ + const void* data, /* in: data to store */ + ulint data_len, /* in: data length */ + ulint memlim) /* in: memory limit to obey */ +{ + void* raw; + ha_storage_node_t* node; + const void* data_copy; + ulint fold; + + /* check if data chunk is already present */ + data_copy = ha_storage_get(storage, data, data_len); + if (data_copy != NULL) { + + return(data_copy); + } + + /* not present */ + + /* check if we are allowed to allocate data_len bytes */ + if (memlim > 0 + && ha_storage_get_size(storage) + data_len > memlim) { + + return(NULL); + } + + /* we put the auxiliary node struct and the data itself in one + continuous block */ + raw = mem_heap_alloc(storage->heap, + sizeof(ha_storage_node_t) + data_len); + + node = (ha_storage_node_t*) raw; + data_copy = (byte*) raw + sizeof(*node); + + memcpy((byte*) raw + sizeof(*node), data, data_len); + + node->data_len = data_len; + node->data = data_copy; + + /* avoid repetitive calls to ut_fold_binary() in the HASH_INSERT + macro */ + fold = ut_fold_binary(data, data_len); + + HASH_INSERT( + ha_storage_node_t, /* type used in the hash chain */ + next, /* node->"next" */ + storage->hash, /* the hash table */ + fold, /* key */ + node); /* add this data to the hash */ + + /* the output should not be changed because it will spoil the + hash table */ + return(data_copy); +} + +#ifdef UNIV_COMPILE_TEST_FUNCS + +void +test_ha_storage() +{ + ha_storage_t* storage; + char buf[1024]; + int i; + const void* stored[256]; + const void* p; + + storage = ha_storage_create(0, 0); + + for (i = 0; i < 256; i++) { + + memset(buf, i, sizeof(buf)); + stored[i] = ha_storage_put(storage, buf, sizeof(buf)); + } + + //ha_storage_empty(&storage); + + for (i = 255; i >= 0; i--) { + + memset(buf, i, sizeof(buf)); + p = ha_storage_put(storage, buf, sizeof(buf)); + + if (p != stored[i]) { + + fprintf(stderr, "ha_storage_put() returned %p " + "instead of %p, i=%d\n", p, stored[i], i); + return; + } + } + + fprintf(stderr, "all ok\n"); + + ha_storage_free(storage); +} + +#endif /* UNIV_COMPILE_TEST_FUNCS */ === added file 'storage/xtradb/ha/hash0hash.c' --- a/storage/xtradb/ha/hash0hash.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/ha/hash0hash.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,165 @@ +/***************************************************************************** + +Copyright (c) 1997, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +The simple hash table utility + +Created 5/20/1997 Heikki Tuuri +*******************************************************/ + +#include "hash0hash.h" +#ifdef UNIV_NONINL +#include "hash0hash.ic" +#endif + +#include "mem0mem.h" + +/**************************************************************** +Reserves the mutex for a fold value in a hash table. */ +UNIV_INTERN +void +hash_mutex_enter( +/*=============*/ + hash_table_t* table, /* in: hash table */ + ulint fold) /* in: fold */ +{ + mutex_enter(hash_get_mutex(table, fold)); +} + +/**************************************************************** +Releases the mutex for a fold value in a hash table. */ +UNIV_INTERN +void +hash_mutex_exit( +/*============*/ + hash_table_t* table, /* in: hash table */ + ulint fold) /* in: fold */ +{ + mutex_exit(hash_get_mutex(table, fold)); +} + +/**************************************************************** +Reserves all the mutexes of a hash table, in an ascending order. */ +UNIV_INTERN +void +hash_mutex_enter_all( +/*=================*/ + hash_table_t* table) /* in: hash table */ +{ + ulint i; + + for (i = 0; i < table->n_mutexes; i++) { + + mutex_enter(table->mutexes + i); + } +} + +/**************************************************************** +Releases all the mutexes of a hash table. */ +UNIV_INTERN +void +hash_mutex_exit_all( +/*================*/ + hash_table_t* table) /* in: hash table */ +{ + ulint i; + + for (i = 0; i < table->n_mutexes; i++) { + + mutex_exit(table->mutexes + i); + } +} + +/***************************************************************** +Creates a hash table with >= n array cells. The actual number of cells is +chosen to be a prime number slightly bigger than n. */ +UNIV_INTERN +hash_table_t* +hash_create( +/*========*/ + /* out, own: created table */ + ulint n) /* in: number of array cells */ +{ + hash_cell_t* array; + ulint prime; + hash_table_t* table; + + prime = ut_find_prime(n); + + table = mem_alloc(sizeof(hash_table_t)); + + array = ut_malloc(sizeof(hash_cell_t) * prime); + +#if defined UNIV_AHI_DEBUG || defined UNIV_DEBUG + table->adaptive = FALSE; +#endif /* UNIV_AHI_DEBUG || UNIV_DEBUG */ + table->array = array; + table->n_cells = prime; + table->n_mutexes = 0; + table->mutexes = NULL; + table->heaps = NULL; + table->heap = NULL; + table->magic_n = HASH_TABLE_MAGIC_N; + + /* Initialize the cell array */ + hash_table_clear(table); + + return(table); +} + +/***************************************************************** +Frees a hash table. */ +UNIV_INTERN +void +hash_table_free( +/*============*/ + hash_table_t* table) /* in, own: hash table */ +{ + ut_a(table->mutexes == NULL); + + ut_free(table->array); + mem_free(table); +} + +/***************************************************************** +Creates a mutex array to protect a hash table. */ +UNIV_INTERN +void +hash_create_mutexes_func( +/*=====================*/ + hash_table_t* table, /* in: hash table */ +#ifdef UNIV_SYNC_DEBUG + ulint sync_level, /* in: latching order level of the + mutexes: used in the debug version */ +#endif /* UNIV_SYNC_DEBUG */ + ulint n_mutexes) /* in: number of mutexes, must be a + power of 2 */ +{ + ulint i; + + ut_a(n_mutexes > 0); + ut_a(ut_is_2pow(n_mutexes)); + + table->mutexes = mem_alloc(n_mutexes * sizeof(mutex_t)); + + for (i = 0; i < n_mutexes; i++) { + mutex_create(table->mutexes + i, sync_level); + } + + table->n_mutexes = n_mutexes; +} === added file 'storage/xtradb/ha_innodb.def' --- a/storage/xtradb/ha_innodb.def 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/ha_innodb.def 2009-06-09 11:16:11 +0000 @@ -0,0 +1,4 @@ +EXPORTS + _mysql_plugin_interface_version_ + _mysql_sizeof_struct_st_plugin_ + _mysql_plugin_declarations_ === added directory 'storage/xtradb/handler' === added file 'storage/xtradb/handler/ha_innodb.cc' --- a/storage/xtradb/handler/ha_innodb.cc 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/handler/ha_innodb.cc 2009-06-11 12:53:26 +0000 @@ -0,0 +1,10394 @@ +/***************************************************************************** + +Copyright (c) 2000, 2009, MySQL AB & Innobase Oy. All Rights Reserved. +Copyright (c) 2008, Google Inc. + +Portions of this file contain modifications contributed and copyrighted by +Google, Inc. Those modifications are gratefully acknowledged and are described +briefly in the InnoDB documentation. The contributions by Google are +incorporated with their permission, and subject to the conditions contained in +the file COPYING.Google. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/* TODO list for the InnoDB handler in 5.0: + - Remove the flag trx->active_trans and look at trx->conc_state + - fix savepoint functions to use savepoint storage area + - Find out what kind of problems the OS X case-insensitivity causes to + table and database names; should we 'normalize' the names like we do + in Windows? +*/ + +#ifdef USE_PRAGMA_IMPLEMENTATION +#pragma implementation // gcc: Class implementation +#endif + +#define MYSQL_SERVER + +#include <mysql_priv.h> +#ifdef MYSQL_SERVER +#include <log_event.h> +#endif /* MYSQL_SERVER */ + +#include <m_ctype.h> +#include <mysys_err.h> +#include <mysql/plugin.h> + +/* Include necessary InnoDB headers */ +extern "C" { +#include "../storage/xtradb/include/univ.i" +#include "../storage/xtradb/include/btr0sea.h" +#include "../storage/xtradb/include/os0file.h" +#include "../storage/xtradb/include/os0thread.h" +#include "../storage/xtradb/include/srv0start.h" +#include "../storage/xtradb/include/srv0srv.h" +#include "../storage/xtradb/include/trx0roll.h" +#include "../storage/xtradb/include/trx0trx.h" +#include "../storage/xtradb/include/trx0sys.h" +#include "../storage/xtradb/include/mtr0mtr.h" +#include "../storage/xtradb/include/row0ins.h" +#include "../storage/xtradb/include/row0mysql.h" +#include "../storage/xtradb/include/row0sel.h" +#include "../storage/xtradb/include/row0upd.h" +#include "../storage/xtradb/include/log0log.h" +#include "../storage/xtradb/include/lock0lock.h" +#include "../storage/xtradb/include/dict0crea.h" +#include "../storage/xtradb/include/btr0cur.h" +#include "../storage/xtradb/include/btr0btr.h" +#include "../storage/xtradb/include/fsp0fsp.h" +#include "../storage/xtradb/include/sync0sync.h" +#include "../storage/xtradb/include/fil0fil.h" +#include "../storage/xtradb/include/trx0xa.h" +#include "../storage/xtradb/include/row0merge.h" +#include "../storage/xtradb/include/thr0loc.h" +#include "../storage/xtradb/include/dict0boot.h" +#include "../storage/xtradb/include/ha_prototypes.h" +#include "../storage/xtradb/include/ut0mem.h" +#include "../storage/xtradb/include/ibuf0ibuf.h" +} + +#include "ha_innodb.h" +#include "i_s.h" +#include "handler0vars.h" + +#ifdef MYSQL_SERVER +// Defined in trx0sys.c +extern char trx_sys_mysql_master_log_name[]; +extern ib_int64_t trx_sys_mysql_master_log_pos; +extern char trx_sys_mysql_relay_log_name[]; +extern ib_int64_t trx_sys_mysql_relay_log_pos; +#endif /* MYSQL_SERVER */ + +#ifndef MYSQL_SERVER +/* This is needed because of Bug #3596. Let us hope that pthread_mutex_t +is defined the same in both builds: the MySQL server and the InnoDB plugin. */ +extern pthread_mutex_t LOCK_thread_count; + +#if MYSQL_VERSION_ID < 50124 +/* this is defined in mysql_priv.h inside #ifdef MYSQL_SERVER +but we need it here */ +bool check_global_access(THD *thd, ulong want_access); +#endif /* MYSQL_VERSION_ID < 50124 */ +#endif /* MYSQL_SERVER */ + +/** to protect innobase_open_files */ +static pthread_mutex_t innobase_share_mutex; +/** to force correct commit order in binlog */ +static pthread_mutex_t prepare_commit_mutex; +static ulong commit_threads = 0; +static pthread_mutex_t commit_threads_m; +static pthread_cond_t commit_cond; +static pthread_mutex_t commit_cond_m; +static bool innodb_inited = 0; + +#define INSIDE_HA_INNOBASE_CC + +/* In the Windows plugin, the return value of current_thd is +undefined. Map it to NULL. */ +#if defined MYSQL_DYNAMIC_PLUGIN && defined __WIN__ +# undef current_thd +# define current_thd NULL +# define EQ_CURRENT_THD(thd) TRUE +#else /* MYSQL_DYNAMIC_PLUGIN && __WIN__ */ +# define EQ_CURRENT_THD(thd) ((thd) == current_thd) +#endif /* MYSQL_DYNAMIC_PLUGIN && __WIN__ */ + +#ifdef MYSQL_DYNAMIC_PLUGIN +/* These must be weak global variables in the dynamic plugin. */ +struct handlerton* innodb_hton_ptr; +#ifdef __WIN__ +struct st_mysql_plugin* builtin_innobase_plugin_ptr; +#else +int builtin_innobase_plugin; +#endif /* __WIN__ */ +/******************************************************************** +Copy InnoDB system variables from the static InnoDB to the dynamic +plugin. */ +static +bool +innodb_plugin_init(void); +/*====================*/ + /* out: TRUE if the dynamic InnoDB plugin should start */ +#else /* MYSQL_DYNAMIC_PLUGIN */ +/* This must be a global variable in the statically linked InnoDB. */ +struct handlerton* innodb_hton_ptr = NULL; +#endif /* MYSQL_DYNAMIC_PLUGIN */ + +static const long AUTOINC_OLD_STYLE_LOCKING = 0; +static const long AUTOINC_NEW_STYLE_LOCKING = 1; +static const long AUTOINC_NO_LOCKING = 2; + +static long innobase_mirrored_log_groups, innobase_log_files_in_group, + innobase_log_buffer_size, + innobase_additional_mem_pool_size, innobase_file_io_threads, + innobase_force_recovery, innobase_open_files, + innobase_autoinc_lock_mode; + +static unsigned long innobase_read_io_threads, innobase_write_io_threads; +static long long innobase_buffer_pool_size, innobase_log_file_size; + +/* The default values for the following char* start-up parameters +are determined in innobase_init below: */ + +static char* innobase_data_home_dir = NULL; +static char* innobase_data_file_path = NULL; +static char* innobase_log_group_home_dir = NULL; +static char* innobase_file_format_name = NULL; +static char* innobase_change_buffering = NULL; + +/* Note: This variable can be set to on/off and any of the supported +file formats in the configuration file, but can only be set to any +of the supported file formats during runtime. */ +static char* innobase_file_format_check = NULL; + +/* The following has a misleading name: starting from 4.0.5, this also +affects Windows: */ +static char* innobase_unix_file_flush_method = NULL; + +/* Below we have boolean-valued start-up parameters, and their default +values */ + +static ulong innobase_fast_shutdown = 1; +#ifdef UNIV_LOG_ARCHIVE +static my_bool innobase_log_archive = FALSE; +static char* innobase_log_arch_dir = NULL; +#endif /* UNIV_LOG_ARCHIVE */ +static my_bool innobase_use_doublewrite = TRUE; +static my_bool innobase_use_checksums = TRUE; +static my_bool innobase_extra_undoslots = FALSE; +static my_bool innobase_locks_unsafe_for_binlog = FALSE; +static my_bool innobase_overwrite_relay_log_info = FALSE; +static my_bool innobase_rollback_on_timeout = FALSE; +static my_bool innobase_create_status_file = FALSE; +static my_bool innobase_stats_on_metadata = TRUE; + +static char* internal_innobase_data_file_path = NULL; + +static char* innodb_version_str = (char*) INNODB_VERSION_STR; + +/* The following counter is used to convey information to InnoDB +about server activity: in selects it is not sensible to call +srv_active_wake_master_thread after each fetch or search, we only do +it every INNOBASE_WAKE_INTERVAL'th step. */ + +#define INNOBASE_WAKE_INTERVAL 32 +static ulong innobase_active_counter = 0; + +static hash_table_t* innobase_open_tables; + +#ifdef __NETWARE__ /* some special cleanup for NetWare */ +bool nw_panic = FALSE; +#endif + +/** Allowed values of innodb_change_buffering */ +static const char* innobase_change_buffering_values[IBUF_USE_COUNT] = { + "none", /* IBUF_USE_NONE */ + "inserts" /* IBUF_USE_INSERT */ +}; + +static INNOBASE_SHARE *get_share(const char *table_name); +static void free_share(INNOBASE_SHARE *share); +static int innobase_close_connection(handlerton *hton, THD* thd); +static int innobase_commit(handlerton *hton, THD* thd, bool all); +static int innobase_rollback(handlerton *hton, THD* thd, bool all); +static int innobase_rollback_to_savepoint(handlerton *hton, THD* thd, + void *savepoint); +static int innobase_savepoint(handlerton *hton, THD* thd, void *savepoint); +static int innobase_release_savepoint(handlerton *hton, THD* thd, + void *savepoint); +static handler *innobase_create_handler(handlerton *hton, + TABLE_SHARE *table, + MEM_ROOT *mem_root); + +/**************************************************************** +Validate the file format name and return its corresponding id. */ +static +uint +innobase_file_format_name_lookup( +/*=============================*/ + /* out: valid file format id */ + const char* format_name); /* in: pointer to file format + name */ +/**************************************************************** +Validate the file format check config parameters, as a side effect it +sets the srv_check_file_format_at_startup variable. */ +static +bool +innobase_file_format_check_on_off( +/*==============================*/ + /* out: true if one of + "on" or "off" */ + const char* format_check); /* in: parameter value */ +/**************************************************************** +Validate the file format check config parameters, as a side effect it +sets the srv_check_file_format_at_startup variable. */ +static +bool +innobase_file_format_check_validate( +/*================================*/ + /* out: true if valid + config value */ + const char* format_check); /* in: parameter value */ +/******************************************************************** +Return alter table flags supported in an InnoDB database. */ +static +uint +innobase_alter_table_flags( +/*=======================*/ + uint flags); + +static const char innobase_hton_name[]= "InnoDB"; + +static MYSQL_THDVAR_BOOL(support_xa, PLUGIN_VAR_OPCMDARG, + "Enable InnoDB support for the XA two-phase commit", + /* check_func */ NULL, /* update_func */ NULL, + /* default */ TRUE); + +static MYSQL_THDVAR_BOOL(table_locks, PLUGIN_VAR_OPCMDARG, + "Enable InnoDB locking in LOCK TABLES", + /* check_func */ NULL, /* update_func */ NULL, + /* default */ TRUE); + +static MYSQL_THDVAR_BOOL(strict_mode, PLUGIN_VAR_OPCMDARG, + "Use strict mode when evaluating create options.", + NULL, NULL, FALSE); + +static MYSQL_THDVAR_ULONG(lock_wait_timeout, PLUGIN_VAR_RQCMDARG, + "Timeout in seconds an InnoDB transaction may wait for a lock before being rolled back. Values above 100000000 disable the timeout.", + NULL, NULL, 50, 1, 1024 * 1024 * 1024, 0); + + +static handler *innobase_create_handler(handlerton *hton, + TABLE_SHARE *table, + MEM_ROOT *mem_root) +{ + return new (mem_root) ha_innobase(hton, table); +} + +/*********************************************************************** +This function is used to prepare X/Open XA distributed transaction */ +static +int +innobase_xa_prepare( +/*================*/ + /* out: 0 or error number */ + handlerton* hton, + THD* thd, /* in: handle to the MySQL thread of the user + whose XA transaction should be prepared */ + bool all); /* in: TRUE - commit transaction + FALSE - the current SQL statement ended */ +/*********************************************************************** +This function is used to recover X/Open XA distributed transactions */ +static +int +innobase_xa_recover( +/*================*/ + /* out: number of prepared transactions + stored in xid_list */ + handlerton* hton, + XID* xid_list, /* in/out: prepared transactions */ + uint len); /* in: number of slots in xid_list */ +/*********************************************************************** +This function is used to commit one X/Open XA distributed transaction +which is in the prepared state */ +static +int +innobase_commit_by_xid( +/*===================*/ + /* out: 0 or error number */ + handlerton* hton, + XID* xid); /* in: X/Open XA transaction identification */ +/*********************************************************************** +This function is used to rollback one X/Open XA distributed transaction +which is in the prepared state */ +static +int +innobase_rollback_by_xid( +/*=====================*/ + /* out: 0 or error number */ + handlerton* hton, + XID *xid); /* in: X/Open XA transaction identification */ +/*********************************************************************** +Create a consistent view for a cursor based on current transaction +which is created if the corresponding MySQL thread still lacks one. +This consistent view is then used inside of MySQL when accessing records +using a cursor. */ +static +void* +innobase_create_cursor_view( +/*========================*/ + /* out: pointer to cursor view or NULL */ + handlerton* hton, /* in: innobase hton */ + THD* thd); /* in: user thread handle */ +/*********************************************************************** +Set the given consistent cursor view to a transaction which is created +if the corresponding MySQL thread still lacks one. If the given +consistent cursor view is NULL global read view of a transaction is +restored to a transaction read view. */ +static +void +innobase_set_cursor_view( +/*=====================*/ + handlerton* hton, + THD* thd, /* in: user thread handle */ + void* curview);/* in: Consistent cursor view to be set */ +/*********************************************************************** +Close the given consistent cursor view of a transaction and restore +global read view to a transaction read view. Transaction is created if the +corresponding MySQL thread still lacks one. */ +static +void +innobase_close_cursor_view( +/*=======================*/ + handlerton* hton, + THD* thd, /* in: user thread handle */ + void* curview);/* in: Consistent read view to be closed */ +/********************************************************************* +Removes all tables in the named database inside InnoDB. */ +static +void +innobase_drop_database( +/*===================*/ + /* out: error number */ + handlerton* hton, /* in: handlerton of Innodb */ + char* path); /* in: database path; inside InnoDB the name + of the last directory in the path is used as + the database name: for example, in 'mysql/data/test' + the database name is 'test' */ +/*********************************************************************** +Closes an InnoDB database. */ +static +int +innobase_end(handlerton *hton, ha_panic_function type); + +/********************************************************************* +Creates an InnoDB transaction struct for the thd if it does not yet have one. +Starts a new InnoDB transaction if a transaction is not yet started. And +assigns a new snapshot for a consistent read if the transaction does not yet +have one. */ +static +int +innobase_start_trx_and_assign_read_view( +/*====================================*/ + /* out: 0 */ + handlerton* hton, /* in: Innodb handlerton */ + THD* thd); /* in: MySQL thread handle of the user for whom + the transaction should be committed */ +/******************************************************************** +Flushes InnoDB logs to disk and makes a checkpoint. Really, a commit flushes +the logs, and the name of this function should be innobase_checkpoint. */ +static +bool +innobase_flush_logs( +/*================*/ + /* out: TRUE if error */ + handlerton* hton); /* in: InnoDB handlerton */ + +/**************************************************************************** +Implements the SHOW INNODB STATUS command. Sends the output of the InnoDB +Monitor to the client. */ +static +bool +innodb_show_status( +/*===============*/ + handlerton* hton, /* in: the innodb handlerton */ + THD* thd, /* in: the MySQL query thread of the caller */ + stat_print_fn *stat_print); +static +bool innobase_show_status(handlerton *hton, THD* thd, + stat_print_fn* stat_print, + enum ha_stat_type stat_type); + +/********************************************************************* +Commits a transaction in an InnoDB database. */ +static +void +innobase_commit_low( +/*================*/ + trx_t* trx); /* in: transaction handle */ + +static SHOW_VAR innodb_status_variables[]= { + {"buffer_pool_pages_data", + (char*) &export_vars.innodb_buffer_pool_pages_data, SHOW_LONG}, + {"buffer_pool_pages_dirty", + (char*) &export_vars.innodb_buffer_pool_pages_dirty, SHOW_LONG}, + {"buffer_pool_pages_flushed", + (char*) &export_vars.innodb_buffer_pool_pages_flushed, SHOW_LONG}, + {"buffer_pool_pages_free", + (char*) &export_vars.innodb_buffer_pool_pages_free, SHOW_LONG}, +#ifdef UNIV_DEBUG + {"buffer_pool_pages_latched", + (char*) &export_vars.innodb_buffer_pool_pages_latched, SHOW_LONG}, +#endif /* UNIV_DEBUG */ + {"buffer_pool_pages_misc", + (char*) &export_vars.innodb_buffer_pool_pages_misc, SHOW_LONG}, + {"buffer_pool_pages_total", + (char*) &export_vars.innodb_buffer_pool_pages_total, SHOW_LONG}, + {"buffer_pool_read_ahead_rnd", + (char*) &export_vars.innodb_buffer_pool_read_ahead_rnd, SHOW_LONG}, + {"buffer_pool_read_ahead_seq", + (char*) &export_vars.innodb_buffer_pool_read_ahead_seq, SHOW_LONG}, + {"buffer_pool_read_requests", + (char*) &export_vars.innodb_buffer_pool_read_requests, SHOW_LONG}, + {"buffer_pool_reads", + (char*) &export_vars.innodb_buffer_pool_reads, SHOW_LONG}, + {"buffer_pool_wait_free", + (char*) &export_vars.innodb_buffer_pool_wait_free, SHOW_LONG}, + {"buffer_pool_write_requests", + (char*) &export_vars.innodb_buffer_pool_write_requests, SHOW_LONG}, + {"data_fsyncs", + (char*) &export_vars.innodb_data_fsyncs, SHOW_LONG}, + {"data_pending_fsyncs", + (char*) &export_vars.innodb_data_pending_fsyncs, SHOW_LONG}, + {"data_pending_reads", + (char*) &export_vars.innodb_data_pending_reads, SHOW_LONG}, + {"data_pending_writes", + (char*) &export_vars.innodb_data_pending_writes, SHOW_LONG}, + {"data_read", + (char*) &export_vars.innodb_data_read, SHOW_LONG}, + {"data_reads", + (char*) &export_vars.innodb_data_reads, SHOW_LONG}, + {"data_writes", + (char*) &export_vars.innodb_data_writes, SHOW_LONG}, + {"data_written", + (char*) &export_vars.innodb_data_written, SHOW_LONG}, + {"dblwr_pages_written", + (char*) &export_vars.innodb_dblwr_pages_written, SHOW_LONG}, + {"dblwr_writes", + (char*) &export_vars.innodb_dblwr_writes, SHOW_LONG}, + {"have_atomic_builtins", + (char*) &export_vars.innodb_have_atomic_builtins, SHOW_BOOL}, + {"log_waits", + (char*) &export_vars.innodb_log_waits, SHOW_LONG}, + {"log_write_requests", + (char*) &export_vars.innodb_log_write_requests, SHOW_LONG}, + {"log_writes", + (char*) &export_vars.innodb_log_writes, SHOW_LONG}, + {"os_log_fsyncs", + (char*) &export_vars.innodb_os_log_fsyncs, SHOW_LONG}, + {"os_log_pending_fsyncs", + (char*) &export_vars.innodb_os_log_pending_fsyncs, SHOW_LONG}, + {"os_log_pending_writes", + (char*) &export_vars.innodb_os_log_pending_writes, SHOW_LONG}, + {"os_log_written", + (char*) &export_vars.innodb_os_log_written, SHOW_LONG}, + {"page_size", + (char*) &export_vars.innodb_page_size, SHOW_LONG}, + {"pages_created", + (char*) &export_vars.innodb_pages_created, SHOW_LONG}, + {"pages_read", + (char*) &export_vars.innodb_pages_read, SHOW_LONG}, + {"pages_written", + (char*) &export_vars.innodb_pages_written, SHOW_LONG}, + {"row_lock_current_waits", + (char*) &export_vars.innodb_row_lock_current_waits, SHOW_LONG}, + {"row_lock_time", + (char*) &export_vars.innodb_row_lock_time, SHOW_LONGLONG}, + {"row_lock_time_avg", + (char*) &export_vars.innodb_row_lock_time_avg, SHOW_LONG}, + {"row_lock_time_max", + (char*) &export_vars.innodb_row_lock_time_max, SHOW_LONG}, + {"row_lock_waits", + (char*) &export_vars.innodb_row_lock_waits, SHOW_LONG}, + {"rows_deleted", + (char*) &export_vars.innodb_rows_deleted, SHOW_LONG}, + {"rows_inserted", + (char*) &export_vars.innodb_rows_inserted, SHOW_LONG}, + {"rows_read", + (char*) &export_vars.innodb_rows_read, SHOW_LONG}, + {"rows_updated", + (char*) &export_vars.innodb_rows_updated, SHOW_LONG}, + {NullS, NullS, SHOW_LONG} +}; + +/* General functions */ + +/********************************************************************** +Returns true if the thread is the replication thread on the slave +server. Used in srv_conc_enter_innodb() to determine if the thread +should be allowed to enter InnoDB - the replication thread is treated +differently than other threads. Also used in +srv_conc_force_exit_innodb(). */ +extern "C" UNIV_INTERN +ibool +thd_is_replication_slave_thread( +/*============================*/ + /* out: true if thd is the replication thread */ + void* thd) /* in: thread handle (THD*) */ +{ + return((ibool) thd_slave_thread((THD*) thd)); +} + +/********************************************************************** +Save some CPU by testing the value of srv_thread_concurrency in inline +functions. */ +static inline +void +innodb_srv_conc_enter_innodb( +/*=========================*/ + trx_t* trx) /* in: transaction handle */ +{ + if (UNIV_LIKELY(!srv_thread_concurrency)) { + + return; + } + + srv_conc_enter_innodb(trx); +} + +/********************************************************************** +Save some CPU by testing the value of srv_thread_concurrency in inline +functions. */ +static inline +void +innodb_srv_conc_exit_innodb( +/*========================*/ + trx_t* trx) /* in: transaction handle */ +{ + if (UNIV_LIKELY(!trx->declared_to_be_inside_innodb)) { + + return; + } + + srv_conc_exit_innodb(trx); +} + +/********************************************************************** +Releases possible search latch and InnoDB thread FIFO ticket. These should +be released at each SQL statement end, and also when mysqld passes the +control to the client. It does no harm to release these also in the middle +of an SQL statement. */ +static inline +void +innobase_release_stat_resources( +/*============================*/ + trx_t* trx) /* in: transaction object */ +{ + if (trx->has_search_latch) { + trx_search_latch_release_if_reserved(trx); + } + + if (trx->declared_to_be_inside_innodb) { + /* Release our possible ticket in the FIFO */ + + srv_conc_force_exit_innodb(trx); + } +} + +/********************************************************************** +Returns true if the transaction this thread is processing has edited +non-transactional tables. Used by the deadlock detector when deciding +which transaction to rollback in case of a deadlock - we try to avoid +rolling back transactions that have edited non-transactional tables. */ +extern "C" UNIV_INTERN +ibool +thd_has_edited_nontrans_tables( +/*===========================*/ + /* out: true if non-transactional tables have + been edited */ + void* thd) /* in: thread handle (THD*) */ +{ + return((ibool) thd_non_transactional_update((THD*) thd)); +} + +/********************************************************************** +Returns true if the thread is executing a SELECT statement. */ +extern "C" UNIV_INTERN +ibool +thd_is_select( +/*==========*/ + /* out: true if thd is executing SELECT */ + const void* thd) /* in: thread handle (THD*) */ +{ + return(thd_sql_command((const THD*) thd) == SQLCOM_SELECT); +} + +/********************************************************************** +Returns true if the thread supports XA, +global value of innodb_supports_xa if thd is NULL. */ +extern "C" UNIV_INTERN +ibool +thd_supports_xa( +/*============*/ + /* out: true if thd has XA support */ + void* thd) /* in: thread handle (THD*), or NULL to query + the global innodb_supports_xa */ +{ + return(THDVAR((THD*) thd, support_xa)); +} + +/********************************************************************** +Returns the lock wait timeout for the current connection. */ +extern "C" UNIV_INTERN +ulong +thd_lock_wait_timeout( +/*==================*/ + /* out: the lock wait timeout, in seconds */ + void* thd) /* in: thread handle (THD*), or NULL to query + the global innodb_lock_wait_timeout */ +{ + /* According to <mysql/plugin.h>, passing thd == NULL + returns the global value of the session variable. */ + return(THDVAR((THD*) thd, lock_wait_timeout)); +} + +/************************************************************************ +Obtain the InnoDB transaction of a MySQL thread. */ +static inline +trx_t*& +thd_to_trx( +/*=======*/ + /* out: reference to transaction pointer */ + THD* thd) /* in: MySQL thread */ +{ + return(*(trx_t**) thd_ha_data(thd, innodb_hton_ptr)); +} + +/************************************************************************ +Call this function when mysqld passes control to the client. That is to +avoid deadlocks on the adaptive hash S-latch possibly held by thd. For more +documentation, see handler.cc. */ +static +int +innobase_release_temporary_latches( +/*===============================*/ + /* out: 0 */ + handlerton* hton, /* in: handlerton */ + THD* thd) /* in: MySQL thread */ +{ + trx_t* trx; + + DBUG_ASSERT(hton == innodb_hton_ptr); + + if (!innodb_inited) { + + return(0); + } + + trx = thd_to_trx(thd); + + if (trx) { + innobase_release_stat_resources(trx); + } + return(0); +} + +/************************************************************************ +Increments innobase_active_counter and every INNOBASE_WAKE_INTERVALth +time calls srv_active_wake_master_thread. This function should be used +when a single database operation may introduce a small need for +server utility activity, like checkpointing. */ +static inline +void +innobase_active_small(void) +/*=======================*/ +{ + innobase_active_counter++; + + if ((innobase_active_counter % INNOBASE_WAKE_INTERVAL) == 0) { + srv_active_wake_master_thread(); + } +} + +/************************************************************************ +Converts an InnoDB error code to a MySQL error code and also tells to MySQL +about a possible transaction rollback inside InnoDB caused by a lock wait +timeout or a deadlock. */ +extern "C" UNIV_INTERN +int +convert_error_code_to_mysql( +/*========================*/ + /* out: MySQL error code */ + int error, /* in: InnoDB error code */ + ulint flags, /* in: InnoDB table flags, or 0 */ + THD* thd) /* in: user thread handle or NULL */ +{ + switch (error) { + case DB_SUCCESS: + return(0); + + case DB_ERROR: + default: + return(-1); /* unspecified error */ + + case DB_DUPLICATE_KEY: + return(HA_ERR_FOUND_DUPP_KEY); + + case DB_FOREIGN_DUPLICATE_KEY: + return(HA_ERR_FOREIGN_DUPLICATE_KEY); + + case DB_RECORD_NOT_FOUND: + return(HA_ERR_NO_ACTIVE_RECORD); + + case DB_DEADLOCK: + /* Since we rolled back the whole transaction, we must + tell it also to MySQL so that MySQL knows to empty the + cached binlog for this transaction */ + + if (thd) { + thd_mark_transaction_to_rollback(thd, TRUE); + } + + return(HA_ERR_LOCK_DEADLOCK); + + case DB_LOCK_WAIT_TIMEOUT: + /* Starting from 5.0.13, we let MySQL just roll back the + latest SQL statement in a lock wait timeout. Previously, we + rolled back the whole transaction. */ + + if (thd) { + thd_mark_transaction_to_rollback( + thd, (bool)row_rollback_on_timeout); + } + + return(HA_ERR_LOCK_WAIT_TIMEOUT); + + case DB_NO_REFERENCED_ROW: + return(HA_ERR_NO_REFERENCED_ROW); + + case DB_ROW_IS_REFERENCED: + return(HA_ERR_ROW_IS_REFERENCED); + + case DB_CANNOT_ADD_CONSTRAINT: + return(HA_ERR_CANNOT_ADD_FOREIGN); + + case DB_CANNOT_DROP_CONSTRAINT: + + return(HA_ERR_ROW_IS_REFERENCED); /* TODO: This is a bit + misleading, a new MySQL error + code should be introduced */ + + case DB_COL_APPEARS_TWICE_IN_INDEX: + case DB_CORRUPTION: + return(HA_ERR_CRASHED); + + case DB_OUT_OF_FILE_SPACE: + return(HA_ERR_RECORD_FILE_FULL); + + case DB_TABLE_IS_BEING_USED: + return(HA_ERR_WRONG_COMMAND); + + case DB_TABLE_NOT_FOUND: + return(HA_ERR_NO_SUCH_TABLE); + + case DB_TOO_BIG_RECORD: + my_error(ER_TOO_BIG_ROWSIZE, MYF(0), + page_get_free_space_of_empty(flags + & DICT_TF_COMPACT) / 2); + return(HA_ERR_TO_BIG_ROW); + + case DB_NO_SAVEPOINT: + return(HA_ERR_NO_SAVEPOINT); + + case DB_LOCK_TABLE_FULL: + /* Since we rolled back the whole transaction, we must + tell it also to MySQL so that MySQL knows to empty the + cached binlog for this transaction */ + + if (thd) { + thd_mark_transaction_to_rollback(thd, TRUE); + } + + return(HA_ERR_LOCK_TABLE_FULL); + + case DB_PRIMARY_KEY_IS_NULL: + return(ER_PRIMARY_CANT_HAVE_NULL); + + case DB_TOO_MANY_CONCURRENT_TRXS: + /* Once MySQL add the appropriate code to errmsg.txt then + we can get rid of this #ifdef. NOTE: The code checked by + the #ifdef is the suggested name for the error condition + and the actual error code name could very well be different. + This will require some monitoring, ie. the status + of this request on our part.*/ +#ifdef ER_TOO_MANY_CONCURRENT_TRXS + return(ER_TOO_MANY_CONCURRENT_TRXS); +#else + return(HA_ERR_RECORD_FILE_FULL); +#endif + case DB_UNSUPPORTED: + return(HA_ERR_UNSUPPORTED); + } +} + +/***************************************************************** +If you want to print a thd that is not associated with the current thread, +you must call this function before reserving the InnoDB kernel_mutex, to +protect MySQL from setting thd->query NULL. If you print a thd of the current +thread, we know that MySQL cannot modify thd->query, and it is not necessary +to call this. Call innobase_mysql_end_print_arbitrary_thd() after you release +the kernel_mutex. */ +extern "C" UNIV_INTERN +void +innobase_mysql_prepare_print_arbitrary_thd(void) +/*============================================*/ +{ + ut_ad(!mutex_own(&kernel_mutex)); + VOID(pthread_mutex_lock(&LOCK_thread_count)); +} + +/***************************************************************** +Releases the mutex reserved by innobase_mysql_prepare_print_arbitrary_thd(). +In the InnoDB latching order, the mutex sits right above the +kernel_mutex. In debug builds, we assert that the kernel_mutex is +released before this function is invoked. */ +extern "C" UNIV_INTERN +void +innobase_mysql_end_print_arbitrary_thd(void) +/*========================================*/ +{ + ut_ad(!mutex_own(&kernel_mutex)); + VOID(pthread_mutex_unlock(&LOCK_thread_count)); +} + +/***************************************************************** +Prints info of a THD object (== user session thread) to the given file. */ +extern "C" UNIV_INTERN +void +innobase_mysql_print_thd( +/*=====================*/ + FILE* f, /* in: output stream */ + void* thd, /* in: pointer to a MySQL THD object */ + uint max_query_len) /* in: max query length to print, or 0 to + use the default max length */ +{ + char buffer[1024]; + + fputs(thd_security_context((THD*) thd, buffer, sizeof buffer, + max_query_len), f); + putc('\n', f); +} + +/********************************************************************** +Get the variable length bounds of the given character set. */ +extern "C" UNIV_INTERN +void +innobase_get_cset_width( +/*====================*/ + ulint cset, /* in: MySQL charset-collation code */ + ulint* mbminlen, /* out: minimum length of a char (in bytes) */ + ulint* mbmaxlen) /* out: maximum length of a char (in bytes) */ +{ + CHARSET_INFO* cs; + ut_ad(cset < 256); + ut_ad(mbminlen); + ut_ad(mbmaxlen); + + cs = all_charsets[cset]; + if (cs) { + *mbminlen = cs->mbminlen; + *mbmaxlen = cs->mbmaxlen; + } else { + ut_a(cset == 0); + *mbminlen = *mbmaxlen = 0; + } +} + +/********************************************************************** +Converts an identifier to a table name. */ +extern "C" UNIV_INTERN +void +innobase_convert_from_table_id( +/*===========================*/ + struct charset_info_st* cs, /* in: the 'from' character set */ + char* to, /* out: converted identifier */ + const char* from, /* in: identifier to convert */ + ulint len) /* in: length of 'to', in bytes */ +{ + uint errors; + + strconvert(cs, from, &my_charset_filename, to, (uint) len, &errors); +} + +/********************************************************************** +Converts an identifier to UTF-8. */ +extern "C" UNIV_INTERN +void +innobase_convert_from_id( +/*=====================*/ + struct charset_info_st* cs, /* in: the 'from' character set */ + char* to, /* out: converted identifier */ + const char* from, /* in: identifier to convert */ + ulint len) /* in: length of 'to', in bytes */ +{ + uint errors; + + strconvert(cs, from, system_charset_info, to, (uint) len, &errors); +} + +/********************************************************************** +Compares NUL-terminated UTF-8 strings case insensitively. */ +extern "C" UNIV_INTERN +int +innobase_strcasecmp( +/*================*/ + /* out: 0 if a=b, <0 if a<b, >1 if a>b */ + const char* a, /* in: first string to compare */ + const char* b) /* in: second string to compare */ +{ + return(my_strcasecmp(system_charset_info, a, b)); +} + +/********************************************************************** +Makes all characters in a NUL-terminated UTF-8 string lower case. */ +extern "C" UNIV_INTERN +void +innobase_casedn_str( +/*================*/ + char* a) /* in/out: string to put in lower case */ +{ + my_casedn_str(system_charset_info, a); +} + +/************************************************************************** +Determines the connection character set. */ +extern "C" UNIV_INTERN +struct charset_info_st* +innobase_get_charset( +/*=================*/ + /* out: connection character set */ + void* mysql_thd) /* in: MySQL thread handle */ +{ + return(thd_charset((THD*) mysql_thd)); +} + +#if defined (__WIN__) && defined (MYSQL_DYNAMIC_PLUGIN) +/*********************************************************************** +Map an OS error to an errno value. The OS error number is stored in +_doserrno and the mapped value is stored in errno) */ +extern "C" +void __cdecl +_dosmaperr( + unsigned long); /* in: OS error value */ + +/************************************************************************* +Creates a temporary file. */ +extern "C" UNIV_INTERN +int +innobase_mysql_tmpfile(void) +/*========================*/ + /* out: temporary file descriptor, or < 0 on error */ +{ + int fd; /* handle of opened file */ + HANDLE osfh; /* OS handle of opened file */ + char* tmpdir; /* point to the directory + where to create file */ + TCHAR path_buf[MAX_PATH - 14]; /* buffer for tmp file path. + The length cannot be longer + than MAX_PATH - 14, or + GetTempFileName will fail. */ + char filename[MAX_PATH]; /* name of the tmpfile */ + DWORD fileaccess = GENERIC_READ /* OS file access */ + | GENERIC_WRITE + | DELETE; + DWORD fileshare = FILE_SHARE_READ /* OS file sharing mode */ + | FILE_SHARE_WRITE + | FILE_SHARE_DELETE; + DWORD filecreate = CREATE_ALWAYS; /* OS method of open/create */ + DWORD fileattrib = /* OS file attribute flags */ + FILE_ATTRIBUTE_NORMAL + | FILE_FLAG_DELETE_ON_CLOSE + | FILE_ATTRIBUTE_TEMPORARY + | FILE_FLAG_SEQUENTIAL_SCAN; + + DBUG_ENTER("innobase_mysql_tmpfile"); + + tmpdir = my_tmpdir(&mysql_tmpdir_list); + + /* The tmpdir parameter can not be NULL for GetTempFileName. */ + if (!tmpdir) { + uint ret; + + /* Use GetTempPath to determine path for temporary files. */ + ret = GetTempPath(sizeof(path_buf), path_buf); + if (ret > sizeof(path_buf) || (ret == 0)) { + + _dosmaperr(GetLastError()); /* map error */ + DBUG_RETURN(-1); + } + + tmpdir = path_buf; + } + + /* Use GetTempFileName to generate a unique filename. */ + if (!GetTempFileName(tmpdir, "ib", 0, filename)) { + + _dosmaperr(GetLastError()); /* map error */ + DBUG_RETURN(-1); + } + + DBUG_PRINT("info", ("filename: %s", filename)); + + /* Open/Create the file. */ + osfh = CreateFile(filename, fileaccess, fileshare, NULL, + filecreate, fileattrib, NULL); + if (osfh == INVALID_HANDLE_VALUE) { + + /* open/create file failed! */ + _dosmaperr(GetLastError()); /* map error */ + DBUG_RETURN(-1); + } + + do { + /* Associates a CRT file descriptor with the OS file handle. */ + fd = _open_osfhandle((intptr_t) osfh, 0); + } while (fd == -1 && errno == EINTR); + + if (fd == -1) { + /* Open failed, close the file handle. */ + + _dosmaperr(GetLastError()); /* map error */ + CloseHandle(osfh); /* no need to check if + CloseHandle fails */ + } + + DBUG_RETURN(fd); +} +#else +/************************************************************************* +Creates a temporary file. */ +extern "C" UNIV_INTERN +int +innobase_mysql_tmpfile(void) +/*========================*/ + /* out: temporary file descriptor, or < 0 on error */ +{ + int fd2 = -1; + File fd = mysql_tmpfile("ib"); + if (fd >= 0) { + /* Copy the file descriptor, so that the additional resources + allocated by create_temp_file() can be freed by invoking + my_close(). + + Because the file descriptor returned by this function + will be passed to fdopen(), it will be closed by invoking + fclose(), which in turn will invoke close() instead of + my_close(). */ + fd2 = dup(fd); + if (fd2 < 0) { + DBUG_PRINT("error",("Got error %d on dup",fd2)); + my_errno=errno; + my_error(EE_OUT_OF_FILERESOURCES, + MYF(ME_BELL+ME_WAITTANG), + "ib*", my_errno); + } + my_close(fd, MYF(MY_WME)); + } + return(fd2); +} +#endif /* defined (__WIN__) && defined (MYSQL_DYNAMIC_PLUGIN) */ + +/************************************************************************* +Wrapper around MySQL's copy_and_convert function, see it for +documentation. */ +extern "C" UNIV_INTERN +ulint +innobase_convert_string( +/*====================*/ + void* to, + ulint to_length, + CHARSET_INFO* to_cs, + const void* from, + ulint from_length, + CHARSET_INFO* from_cs, + uint* errors) +{ + return(copy_and_convert((char*)to, (uint32) to_length, to_cs, + (const char*)from, (uint32) from_length, from_cs, + errors)); +} + +/*********************************************************************** +Formats the raw data in "data" (in InnoDB on-disk format) that is of +type DATA_(CHAR|VARCHAR|MYSQL|VARMYSQL) using "charset_coll" and writes +the result to "buf". The result is converted to "system_charset_info". +Not more than "buf_size" bytes are written to "buf". +The result is always '\0'-terminated (provided buf_size > 0) and the +number of bytes that were written to "buf" is returned (including the +terminating '\0'). */ +extern "C" UNIV_INTERN +ulint +innobase_raw_format( +/*================*/ + /* out: number of bytes + that were written */ + const char* data, /* in: raw data */ + ulint data_len, /* in: raw data length + in bytes */ + ulint charset_coll, /* in: charset collation */ + char* buf, /* out: output buffer */ + ulint buf_size) /* in: output buffer size + in bytes */ +{ + /* XXX we use a hard limit instead of allocating + but_size bytes from the heap */ + CHARSET_INFO* data_cs; + char buf_tmp[8192]; + ulint buf_tmp_used; + uint num_errors; + + data_cs = all_charsets[charset_coll]; + + buf_tmp_used = innobase_convert_string(buf_tmp, sizeof(buf_tmp), + system_charset_info, + data, data_len, data_cs, + &num_errors); + + return(ut_str_sql_format(buf_tmp, buf_tmp_used, buf, buf_size)); +} + +/************************************************************************* +Compute the next autoinc value. + +For MySQL replication the autoincrement values can be partitioned among +the nodes. The offset is the start or origin of the autoincrement value +for a particular node. For n nodes the increment will be n and the offset +will be in the interval [1, n]. The formula tries to allocate the next +value for a particular node. + +Note: This function is also called with increment set to the number of +values we want to reserve for multi-value inserts e.g., + + INSERT INTO T VALUES(), (), (); + +innobase_next_autoinc() will be called with increment set to +n * 3 where autoinc_lock_mode != TRADITIONAL because we want +to reserve 3 values for the multi-value INSERT above. */ +static +ulonglong +innobase_next_autoinc( +/*==================*/ + /* out: the next value */ + ulonglong current, /* in: Current value */ + ulonglong increment, /* in: increment current by */ + ulonglong offset, /* in: AUTOINC offset */ + ulonglong max_value) /* in: max value for type */ +{ + ulonglong next_value; + + /* Should never be 0. */ + ut_a(increment > 0); + + /* According to MySQL documentation, if the offset is greater than + the increment then the offset is ignored. */ + if (offset > increment) { + offset = 0; + } + + if (max_value <= current) { + next_value = max_value; + } else if (offset <= 1) { + /* Offset 0 and 1 are the same, because there must be at + least one node in the system. */ + if (max_value - current <= increment) { + next_value = max_value; + } else { + next_value = current + increment; + } + } else if (max_value > current) { + if (current > offset) { + next_value = ((current - offset) / increment) + 1; + } else { + next_value = ((offset - current) / increment) + 1; + } + + ut_a(increment > 0); + ut_a(next_value > 0); + + /* Check for multiplication overflow. */ + if (increment > (max_value / next_value)) { + + next_value = max_value; + } else { + next_value *= increment; + + ut_a(max_value >= next_value); + + /* Check for overflow. */ + if (max_value - next_value <= offset) { + next_value = max_value; + } else { + next_value += offset; + } + } + } else { + next_value = max_value; + } + + ut_a(next_value <= max_value); + + return(next_value); +} + +/************************************************************************* +Initializes some fields in an InnoDB transaction object. */ +static +void +innobase_trx_init( +/*==============*/ + THD* thd, /* in: user thread handle */ + trx_t* trx) /* in/out: InnoDB transaction handle */ +{ + DBUG_ENTER("innobase_trx_init"); + DBUG_ASSERT(EQ_CURRENT_THD(thd)); + DBUG_ASSERT(thd == trx->mysql_thd); + + trx->check_foreigns = !thd_test_options( + thd, OPTION_NO_FOREIGN_KEY_CHECKS); + + trx->check_unique_secondary = !thd_test_options( + thd, OPTION_RELAXED_UNIQUE_CHECKS); + + DBUG_VOID_RETURN; +} + +/************************************************************************* +Allocates an InnoDB transaction for a MySQL handler object. */ +extern "C" UNIV_INTERN +trx_t* +innobase_trx_allocate( +/*==================*/ + /* out: InnoDB transaction handle */ + THD* thd) /* in: user thread handle */ +{ + trx_t* trx; + + DBUG_ENTER("innobase_trx_allocate"); + DBUG_ASSERT(thd != NULL); + DBUG_ASSERT(EQ_CURRENT_THD(thd)); + + trx = trx_allocate_for_mysql(); + + trx->mysql_thd = thd; + trx->mysql_query_str = thd_query(thd); + + innobase_trx_init(thd, trx); + + DBUG_RETURN(trx); +} + +/************************************************************************* +Gets the InnoDB transaction handle for a MySQL handler object, creates +an InnoDB transaction struct if the corresponding MySQL thread struct still +lacks one. */ +static +trx_t* +check_trx_exists( +/*=============*/ + /* out: InnoDB transaction handle */ + THD* thd) /* in: user thread handle */ +{ + trx_t*& trx = thd_to_trx(thd); + + ut_ad(EQ_CURRENT_THD(thd)); + + if (trx == NULL) { + trx = innobase_trx_allocate(thd); + } else if (UNIV_UNLIKELY(trx->magic_n != TRX_MAGIC_N)) { + mem_analyze_corruption(trx); + ut_error; + } + + innobase_trx_init(thd, trx); + + return(trx); +} + + +/************************************************************************* +Construct ha_innobase handler. */ +UNIV_INTERN +ha_innobase::ha_innobase(handlerton *hton, TABLE_SHARE *table_arg) + :handler(hton, table_arg), + int_table_flags(HA_REC_NOT_IN_SEQ | + HA_NULL_IN_KEY | + HA_CAN_INDEX_BLOBS | + HA_CAN_SQL_HANDLER | + HA_PRIMARY_KEY_REQUIRED_FOR_POSITION | + HA_PRIMARY_KEY_IN_READ_INDEX | + HA_BINLOG_ROW_CAPABLE | + HA_CAN_GEOMETRY | HA_PARTIAL_COLUMN_READ | + HA_TABLE_SCAN_ON_INDEX), + start_of_scan(0), + num_write_row(0) +{} + +/************************************************************************* +Destruct ha_innobase handler. */ +UNIV_INTERN +ha_innobase::~ha_innobase() +{ +} + +/************************************************************************* +Updates the user_thd field in a handle and also allocates a new InnoDB +transaction handle if needed, and updates the transaction fields in the +prebuilt struct. */ +UNIV_INTERN inline +void +ha_innobase::update_thd( +/*====================*/ + THD* thd) /* in: thd to use the handle */ +{ + trx_t* trx; + + trx = check_trx_exists(thd); + + if (prebuilt->trx != trx) { + + row_update_prebuilt_trx(prebuilt, trx); + } + + user_thd = thd; +} + +/************************************************************************* +Updates the user_thd field in a handle and also allocates a new InnoDB +transaction handle if needed, and updates the transaction fields in the +prebuilt struct. */ +UNIV_INTERN +void +ha_innobase::update_thd() +/*=====================*/ +{ + THD* thd = ha_thd(); + ut_ad(EQ_CURRENT_THD(thd)); + update_thd(thd); +} + +/************************************************************************* +Registers that InnoDB takes part in an SQL statement, so that MySQL knows to +roll back the statement if the statement results in an error. This MUST be +called for every SQL statement that may be rolled back by MySQL. Calling this +several times to register the same statement is allowed, too. */ +static inline +void +innobase_register_stmt( +/*===================*/ + handlerton* hton, /* in: Innobase hton */ + THD* thd) /* in: MySQL thd (connection) object */ +{ + DBUG_ASSERT(hton == innodb_hton_ptr); + /* Register the statement */ + trans_register_ha(thd, FALSE, hton); +} + +/************************************************************************* +Registers an InnoDB transaction in MySQL, so that the MySQL XA code knows +to call the InnoDB prepare and commit, or rollback for the transaction. This +MUST be called for every transaction for which the user may call commit or +rollback. Calling this several times to register the same transaction is +allowed, too. +This function also registers the current SQL statement. */ +static inline +void +innobase_register_trx_and_stmt( +/*===========================*/ + handlerton *hton, /* in: Innobase handlerton */ + THD* thd) /* in: MySQL thd (connection) object */ +{ + /* NOTE that actually innobase_register_stmt() registers also + the transaction in the AUTOCOMMIT=1 mode. */ + + innobase_register_stmt(hton, thd); + + if (thd_test_options(thd, OPTION_NOT_AUTOCOMMIT | OPTION_BEGIN)) { + + /* No autocommit mode, register for a transaction */ + trans_register_ha(thd, TRUE, hton); + } +} + +/* BACKGROUND INFO: HOW THE MYSQL QUERY CACHE WORKS WITH INNODB + ------------------------------------------------------------ + +1) The use of the query cache for TBL is disabled when there is an +uncommitted change to TBL. + +2) When a change to TBL commits, InnoDB stores the current value of +its global trx id counter, let us denote it by INV_TRX_ID, to the table object +in the InnoDB data dictionary, and does only allow such transactions whose +id <= INV_TRX_ID to use the query cache. + +3) When InnoDB does an INSERT/DELETE/UPDATE to a table TBL, or an implicit +modification because an ON DELETE CASCADE, we invalidate the MySQL query cache +of TBL immediately. + +How this is implemented inside InnoDB: + +1) Since every modification always sets an IX type table lock on the InnoDB +table, it is easy to check if there can be uncommitted modifications for a +table: just check if there are locks in the lock list of the table. + +2) When a transaction inside InnoDB commits, it reads the global trx id +counter and stores the value INV_TRX_ID to the tables on which it had a lock. + +3) If there is an implicit table change from ON DELETE CASCADE or SET NULL, +InnoDB calls an invalidate method for the MySQL query cache for that table. + +How this is implemented inside sql_cache.cc: + +1) The query cache for an InnoDB table TBL is invalidated immediately at an +INSERT/UPDATE/DELETE, just like in the case of MyISAM. No need to delay +invalidation to the transaction commit. + +2) To store or retrieve a value from the query cache of an InnoDB table TBL, +any query must first ask InnoDB's permission. We must pass the thd as a +parameter because InnoDB will look at the trx id, if any, associated with +that thd. + +3) Use of the query cache for InnoDB tables is now allowed also when +AUTOCOMMIT==0 or we are inside BEGIN ... COMMIT. Thus transactions no longer +put restrictions on the use of the query cache. +*/ + +/********************************************************************** +The MySQL query cache uses this to check from InnoDB if the query cache at +the moment is allowed to operate on an InnoDB table. The SQL query must +be a non-locking SELECT. + +The query cache is allowed to operate on certain query only if this function +returns TRUE for all tables in the query. + +If thd is not in the autocommit state, this function also starts a new +transaction for thd if there is no active trx yet, and assigns a consistent +read view to it if there is no read view yet. + +Why a deadlock of threads is not possible: the query cache calls this function +at the start of a SELECT processing. Then the calling thread cannot be +holding any InnoDB semaphores. The calling thread is holding the +query cache mutex, and this function will reserver the InnoDB kernel mutex. +Thus, the 'rank' in sync0sync.h of the MySQL query cache mutex is above +the InnoDB kernel mutex. */ +static +my_bool +innobase_query_caching_of_table_permitted( +/*======================================*/ + /* out: TRUE if permitted, FALSE if not; + note that the value FALSE does not mean + we should invalidate the query cache: + invalidation is called explicitly */ + THD* thd, /* in: thd of the user who is trying to + store a result to the query cache or + retrieve it */ + char* full_name, /* in: concatenation of database name, + the null character '\0', and the table + name */ + uint full_name_len, /* in: length of the full name, i.e. + len(dbname) + len(tablename) + 1 */ + ulonglong *unused) /* unused for this engine */ +{ + ibool is_autocommit; + trx_t* trx; + char norm_name[1000]; + + ut_a(full_name_len < 999); + + trx = check_trx_exists(thd); + + if (trx->isolation_level == TRX_ISO_SERIALIZABLE) { + /* In the SERIALIZABLE mode we add LOCK IN SHARE MODE to every + plain SELECT if AUTOCOMMIT is not on. */ + + return((my_bool)FALSE); + } + + if (trx->has_search_latch) { + sql_print_error("The calling thread is holding the adaptive " + "search, latch though calling " + "innobase_query_caching_of_table_permitted."); + + mutex_enter(&kernel_mutex); + trx_print(stderr, trx, 1024); + mutex_exit(&kernel_mutex); + } + + innobase_release_stat_resources(trx); + + if (!thd_test_options(thd, OPTION_NOT_AUTOCOMMIT | OPTION_BEGIN)) { + + is_autocommit = TRUE; + } else { + is_autocommit = FALSE; + + } + + if (is_autocommit && trx->n_mysql_tables_in_use == 0) { + /* We are going to retrieve the query result from the query + cache. This cannot be a store operation to the query cache + because then MySQL would have locks on tables already. + + TODO: if the user has used LOCK TABLES to lock the table, + then we open a transaction in the call of row_.. below. + That trx can stay open until UNLOCK TABLES. The same problem + exists even if we do not use the query cache. MySQL should be + modified so that it ALWAYS calls some cleanup function when + the processing of a query ends! + + We can imagine we instantaneously serialize this consistent + read trx to the current trx id counter. If trx2 would have + changed the tables of a query result stored in the cache, and + trx2 would have already committed, making the result obsolete, + then trx2 would have already invalidated the cache. Thus we + can trust the result in the cache is ok for this query. */ + + return((my_bool)TRUE); + } + + /* Normalize the table name to InnoDB format */ + + memcpy(norm_name, full_name, full_name_len); + + norm_name[strlen(norm_name)] = '/'; /* InnoDB uses '/' as the + separator between db and table */ + norm_name[full_name_len] = '\0'; +#ifdef __WIN__ + innobase_casedn_str(norm_name); +#endif + /* The call of row_search_.. will start a new transaction if it is + not yet started */ + + if (trx->active_trans == 0) { + + innobase_register_trx_and_stmt(innodb_hton_ptr, thd); + trx->active_trans = 1; + } + + if (row_search_check_if_query_cache_permitted(trx, norm_name)) { + + /* printf("Query cache for %s permitted\n", norm_name); */ + + return((my_bool)TRUE); + } + + /* printf("Query cache for %s NOT permitted\n", norm_name); */ + + return((my_bool)FALSE); +} + +/********************************************************************* +Invalidates the MySQL query cache for the table. +NOTE that the exact prototype of this function has to be in +/xtradb/row/row0ins.c! */ +extern "C" UNIV_INTERN +void +innobase_invalidate_query_cache( +/*============================*/ + trx_t* trx, /* in: transaction which modifies the table */ + char* full_name, /* in: concatenation of database name, null + char '\0', table name, null char'\0'; + NOTE that in Windows this is always + in LOWER CASE! */ + ulint full_name_len) /* in: full name length where also the null + chars count */ +{ + /* Note that the sync0sync.h rank of the query cache mutex is just + above the InnoDB kernel mutex. The caller of this function must not + have latches of a lower rank. */ + + /* Argument TRUE below means we are using transactions */ +#ifdef HAVE_QUERY_CACHE + mysql_query_cache_invalidate4((THD*) trx->mysql_thd, + (const char*) full_name, + (uint32) full_name_len, + TRUE); +#endif +} + +/********************************************************************* +Convert an SQL identifier to the MySQL system_charset_info (UTF-8) +and quote it if needed. */ +static +char* +innobase_convert_identifier( +/*========================*/ + /* out: pointer to the end of buf */ + char* buf, /* out: buffer for converted identifier */ + ulint buflen, /* in: length of buf, in bytes */ + const char* id, /* in: identifier to convert */ + ulint idlen, /* in: length of id, in bytes */ + void* thd, /* in: MySQL connection thread, or NULL */ + ibool file_id)/* in: TRUE=id is a table or database name; + FALSE=id is an UTF-8 string */ +{ + char nz[NAME_LEN + 1]; + char nz2[NAME_LEN + 1 + sizeof srv_mysql50_table_name_prefix]; + + const char* s = id; + int q; + + if (file_id) { + /* Decode the table name. The filename_to_tablename() + function expects a NUL-terminated string. The input and + output strings buffers must not be shared. */ + + if (UNIV_UNLIKELY(idlen > (sizeof nz) - 1)) { + idlen = (sizeof nz) - 1; + } + + memcpy(nz, id, idlen); + nz[idlen] = 0; + + s = nz2; + idlen = filename_to_tablename(nz, nz2, sizeof nz2); + } + + /* See if the identifier needs to be quoted. */ + if (UNIV_UNLIKELY(!thd)) { + q = '"'; + } else { + q = get_quote_char_for_identifier((THD*) thd, s, (int) idlen); + } + + if (q == EOF) { + if (UNIV_UNLIKELY(idlen > buflen)) { + idlen = buflen; + } + memcpy(buf, s, idlen); + return(buf + idlen); + } + + /* Quote the identifier. */ + if (buflen < 2) { + return(buf); + } + + *buf++ = q; + buflen--; + + for (; idlen; idlen--) { + int c = *s++; + if (UNIV_UNLIKELY(c == q)) { + if (UNIV_UNLIKELY(buflen < 3)) { + break; + } + + *buf++ = c; + *buf++ = c; + buflen -= 2; + } else { + if (UNIV_UNLIKELY(buflen < 2)) { + break; + } + + *buf++ = c; + buflen--; + } + } + + *buf++ = q; + return(buf); +} + +/********************************************************************* +Convert a table or index name to the MySQL system_charset_info (UTF-8) +and quote it if needed. */ +extern "C" UNIV_INTERN +char* +innobase_convert_name( +/*==================*/ + /* out: pointer to the end of buf */ + char* buf, /* out: buffer for converted identifier */ + ulint buflen, /* in: length of buf, in bytes */ + const char* id, /* in: identifier to convert */ + ulint idlen, /* in: length of id, in bytes */ + void* thd, /* in: MySQL connection thread, or NULL */ + ibool table_id)/* in: TRUE=id is a table or database name; + FALSE=id is an index name */ +{ + char* s = buf; + const char* bufend = buf + buflen; + + if (table_id) { + const char* slash = (const char*) memchr(id, '/', idlen); + if (!slash) { + + goto no_db_name; + } + + /* Print the database name and table name separately. */ + s = innobase_convert_identifier(s, bufend - s, id, slash - id, + thd, TRUE); + if (UNIV_LIKELY(s < bufend)) { + *s++ = '.'; + s = innobase_convert_identifier(s, bufend - s, + slash + 1, idlen + - (slash - id) - 1, + thd, TRUE); + } + } else if (UNIV_UNLIKELY(*id == TEMP_INDEX_PREFIX)) { + /* Temporary index name (smart ALTER TABLE) */ + const char temp_index_suffix[]= "--temporary--"; + + s = innobase_convert_identifier(buf, buflen, id + 1, idlen - 1, + thd, FALSE); + if (s - buf + (sizeof temp_index_suffix - 1) < buflen) { + memcpy(s, temp_index_suffix, + sizeof temp_index_suffix - 1); + s += sizeof temp_index_suffix - 1; + } + } else { +no_db_name: + s = innobase_convert_identifier(buf, buflen, id, idlen, + thd, table_id); + } + + return(s); + +} + +/************************************************************************** +Determines if the currently running transaction has been interrupted. */ +extern "C" UNIV_INTERN +ibool +trx_is_interrupted( +/*===============*/ + /* out: TRUE if interrupted */ + trx_t* trx) /* in: transaction */ +{ + return(trx && trx->mysql_thd && thd_killed((THD*) trx->mysql_thd)); +} + +/****************************************************************** +Resets some fields of a prebuilt struct. The template is used in fast +retrieval of just those column values MySQL needs in its processing. */ +static +void +reset_template( +/*===========*/ + row_prebuilt_t* prebuilt) /* in/out: prebuilt struct */ +{ + prebuilt->keep_other_fields_on_keyread = 0; + prebuilt->read_just_key = 0; +} + +/********************************************************************* +Call this when you have opened a new table handle in HANDLER, before you +call index_read_idx() etc. Actually, we can let the cursor stay open even +over a transaction commit! Then you should call this before every operation, +fetch next etc. This function inits the necessary things even after a +transaction commit. */ +UNIV_INTERN +void +ha_innobase::init_table_handle_for_HANDLER(void) +/*============================================*/ +{ + /* If current thd does not yet have a trx struct, create one. + If the current handle does not yet have a prebuilt struct, create + one. Update the trx pointers in the prebuilt struct. Normally + this operation is done in external_lock. */ + + update_thd(ha_thd()); + + /* Initialize the prebuilt struct much like it would be inited in + external_lock */ + + innobase_release_stat_resources(prebuilt->trx); + + /* If the transaction is not started yet, start it */ + + trx_start_if_not_started(prebuilt->trx); + + /* Assign a read view if the transaction does not have it yet */ + + trx_assign_read_view(prebuilt->trx); + + /* Set the MySQL flag to mark that there is an active transaction */ + + if (prebuilt->trx->active_trans == 0) { + + innobase_register_trx_and_stmt(ht, user_thd); + + prebuilt->trx->active_trans = 1; + } + + /* We did the necessary inits in this function, no need to repeat them + in row_search_for_mysql */ + + prebuilt->sql_stat_start = FALSE; + + /* We let HANDLER always to do the reads as consistent reads, even + if the trx isolation level would have been specified as SERIALIZABLE */ + + prebuilt->select_lock_type = LOCK_NONE; + prebuilt->stored_select_lock_type = LOCK_NONE; + + /* Always fetch all columns in the index record */ + + prebuilt->hint_need_to_fetch_extra_cols = ROW_RETRIEVE_ALL_COLS; + + /* We want always to fetch all columns in the whole row? Or do + we???? */ + + prebuilt->used_in_HANDLER = TRUE; + reset_template(prebuilt); +} + +/************************************************************************* +Opens an InnoDB database. */ +static +int +innobase_init( +/*==========*/ + /* out: 0 on success, error code on failure */ + void *p) /* in: InnoDB handlerton */ +{ + static char current_dir[3]; /* Set if using current lib */ + int err; + bool ret; + char *default_path; + uint format_id; + + DBUG_ENTER("innobase_init"); + handlerton *innobase_hton= (handlerton *)p; + +#ifdef MYSQL_DYNAMIC_PLUGIN + if (!innodb_plugin_init()) { + sql_print_error("InnoDB plugin init failed."); + DBUG_RETURN(-1); + } + + if (innodb_hton_ptr) { + /* Patch the statically linked handlerton and variables */ + innobase_hton = innodb_hton_ptr; + } +#endif /* MYSQL_DYNAMIC_PLUGIN */ + + innodb_hton_ptr = innobase_hton; + + innobase_hton->state = SHOW_OPTION_YES; + innobase_hton->db_type= DB_TYPE_INNODB; + innobase_hton->savepoint_offset=sizeof(trx_named_savept_t); + innobase_hton->close_connection=innobase_close_connection; + innobase_hton->savepoint_set=innobase_savepoint; + innobase_hton->savepoint_rollback=innobase_rollback_to_savepoint; + innobase_hton->savepoint_release=innobase_release_savepoint; + innobase_hton->commit=innobase_commit; + innobase_hton->rollback=innobase_rollback; + innobase_hton->prepare=innobase_xa_prepare; + innobase_hton->recover=innobase_xa_recover; + innobase_hton->commit_by_xid=innobase_commit_by_xid; + innobase_hton->rollback_by_xid=innobase_rollback_by_xid; + innobase_hton->create_cursor_read_view=innobase_create_cursor_view; + innobase_hton->set_cursor_read_view=innobase_set_cursor_view; + innobase_hton->close_cursor_read_view=innobase_close_cursor_view; + innobase_hton->create=innobase_create_handler; + innobase_hton->drop_database=innobase_drop_database; + innobase_hton->panic=innobase_end; + innobase_hton->start_consistent_snapshot=innobase_start_trx_and_assign_read_view; + innobase_hton->flush_logs=innobase_flush_logs; + innobase_hton->show_status=innobase_show_status; + innobase_hton->flags=HTON_NO_FLAGS; + innobase_hton->release_temporary_latches=innobase_release_temporary_latches; + innobase_hton->alter_table_flags = innobase_alter_table_flags; + + ut_a(DATA_MYSQL_TRUE_VARCHAR == (ulint)MYSQL_TYPE_VARCHAR); + +#ifdef UNIV_DEBUG + static const char test_filename[] = "-@"; + char test_tablename[sizeof test_filename + + sizeof srv_mysql50_table_name_prefix]; + if ((sizeof test_tablename) - 1 + != filename_to_tablename(test_filename, test_tablename, + sizeof test_tablename) + || strncmp(test_tablename, + srv_mysql50_table_name_prefix, + sizeof srv_mysql50_table_name_prefix) + || strcmp(test_tablename + + sizeof srv_mysql50_table_name_prefix, + test_filename)) { + sql_print_error("tablename encoding has been changed"); + goto error; + } +#endif /* UNIV_DEBUG */ + +#ifndef MYSQL_SERVER + innodb_overwrite_relay_log_info = FALSE; +#endif + +#ifdef HAVE_REPLICATION +#ifdef MYSQL_SERVER + /* read master log position from relay-log.info if exists */ + char fname[FN_REFLEN+128]; + int pos; + int info_fd; + IO_CACHE info_file; + + fname[0] = '\0'; + + if(innobase_overwrite_relay_log_info) { + + fprintf(stderr, + "InnoDB: Warning: innodb_overwrite_relay_log_info is enabled." + " Updates in other storage engines may have problem with consistency.\n"); + + bzero((char*) &info_file, sizeof(info_file)); + fn_format(fname, relay_log_info_file, mysql_data_home, "", 4+32); + + int error=0; + + if (!access(fname,F_OK)) { + /* exist */ + if ((info_fd = my_open(fname, O_RDWR|O_BINARY, MYF(MY_WME))) < 0) { + error=1; + } else if (init_io_cache(&info_file, info_fd, IO_SIZE*2, + READ_CACHE, 0L, 0, MYF(MY_WME))) { + error=1; + } + + if (error) { +relay_info_error: + if (info_fd >= 0) + my_close(info_fd, MYF(0)); + fname[0] = '\0'; + goto skip_relay; + } + } else { + fname[0] = '\0'; + goto skip_relay; + } + + if (init_strvar_from_file(fname, sizeof(fname), &info_file, "") || /* dummy (it is relay-log) */ + init_intvar_from_file(&pos, &info_file, BIN_LOG_HEADER_SIZE)) { + end_io_cache(&info_file); + error=1; + goto relay_info_error; + } + + fprintf(stderr, + "InnoDB: relay-log.info is detected.\n" + "InnoDB: relay log: position %u, file name %s\n", + pos, fname); + + strncpy(trx_sys_mysql_relay_log_name, fname, TRX_SYS_MYSQL_MASTER_LOG_NAME_LEN); + trx_sys_mysql_relay_log_pos = (ib_int64_t) pos; + + if (init_strvar_from_file(fname, sizeof(fname), &info_file, "") || + init_intvar_from_file(&pos, &info_file, 0)) { + end_io_cache(&info_file); + error=1; + goto relay_info_error; + } + + fprintf(stderr, + "InnoDB: master log: position %u, file name %s\n", + pos, fname); + + strncpy(trx_sys_mysql_master_log_name, fname, TRX_SYS_MYSQL_MASTER_LOG_NAME_LEN); + trx_sys_mysql_master_log_pos = (ib_int64_t) pos; + + end_io_cache(&info_file); + if (info_fd >= 0) + my_close(info_fd, MYF(0)); + } +skip_relay: +#endif /* MYSQL_SERVER */ +#endif /* HAVE_REPLICATION */ + + /* Check that values don't overflow on 32-bit systems. */ + if (sizeof(ulint) == 4) { + if (innobase_buffer_pool_size > UINT_MAX32) { + sql_print_error( + "innobase_buffer_pool_size can't be over 4GB" + " on 32-bit systems"); + + goto error; + } + + if (innobase_log_file_size > UINT_MAX32) { + sql_print_error( + "innobase_log_file_size can't be over 4GB" + " on 32-bit systems"); + + goto error; + } + } + + os_innodb_umask = (ulint)my_umask; + + /* First calculate the default path for innodb_data_home_dir etc., + in case the user has not given any value. + + Note that when using the embedded server, the datadirectory is not + necessarily the current directory of this program. */ + + if (mysqld_embedded) { + default_path = mysql_real_data_home; + fil_path_to_mysql_datadir = mysql_real_data_home; + } else { + /* It's better to use current lib, to keep paths short */ + current_dir[0] = FN_CURLIB; + current_dir[1] = FN_LIBCHAR; + current_dir[2] = 0; + default_path = current_dir; + } + + ut_a(default_path); + + if (specialflag & SPECIAL_NO_PRIOR) { + srv_set_thread_priorities = FALSE; + } else { + srv_set_thread_priorities = TRUE; + srv_query_thread_priority = QUERY_PRIOR; + } + + /* Set InnoDB initialization parameters according to the values + read from MySQL .cnf file */ + + /*--------------- Data files -------------------------*/ + + /* The default dir for data files is the datadir of MySQL */ + + srv_data_home = (innobase_data_home_dir ? innobase_data_home_dir : + default_path); + + /* Set default InnoDB data file size to 10 MB and let it be + auto-extending. Thus users can use InnoDB in >= 4.0 without having + to specify any startup options. */ + + if (!innobase_data_file_path) { + innobase_data_file_path = (char*) "ibdata1:10M:autoextend"; + } + + /* Since InnoDB edits the argument in the next call, we make another + copy of it: */ + + internal_innobase_data_file_path = my_strdup(innobase_data_file_path, + MYF(MY_FAE)); + + ret = (bool) srv_parse_data_file_paths_and_sizes( + internal_innobase_data_file_path); + if (ret == FALSE) { + sql_print_error( + "InnoDB: syntax error in innodb_data_file_path"); +mem_free_and_error: + srv_free_paths_and_sizes(); + my_free(internal_innobase_data_file_path, + MYF(MY_ALLOW_ZERO_PTR)); + goto error; + } + +#ifdef HAVE_REPLICATION +#ifdef MYSQL_SERVER + if(innobase_overwrite_relay_log_info) { + /* If InnoDB progressed from relay-log.info, overwrite it */ + if (fname[0] == '\0') { + fprintf(stderr, + "InnoDB: something wrong with relay-info.log. InnoDB will not overwrite it.\n"); + } else if (0 != strcmp(fname, trx_sys_mysql_master_log_name) + || pos != trx_sys_mysql_master_log_pos) { + /* Overwrite relay-log.info */ + bzero((char*) &info_file, sizeof(info_file)); + fn_format(fname, relay_log_info_file, mysql_data_home, "", 4+32); + + int error = 0; + + if (!access(fname,F_OK)) { + /* exist */ + if ((info_fd = my_open(fname, O_RDWR|O_BINARY, MYF(MY_WME))) < 0) { + error = 1; + } else if (init_io_cache(&info_file, info_fd, IO_SIZE*2, + WRITE_CACHE, 0L, 0, MYF(MY_WME))) { + error = 1; + } + + if (error) { + if (info_fd >= 0) + my_close(info_fd, MYF(0)); + goto skip_overwrite; + } + } else { + error = 1; + goto skip_overwrite; + } + + char buff[FN_REFLEN*2+22*2+4], *pos; + + my_b_seek(&info_file, 0L); + pos=strmov(buff, trx_sys_mysql_relay_log_name); + *pos++='\n'; + pos=longlong2str(trx_sys_mysql_relay_log_pos, pos, 10); + *pos++='\n'; + pos=strmov(pos, trx_sys_mysql_master_log_name); + *pos++='\n'; + pos=longlong2str(trx_sys_mysql_master_log_pos, pos, 10); + *pos='\n'; + + if (my_b_write(&info_file, (uchar*) buff, (size_t) (pos-buff)+1)) + error = 1; + if (flush_io_cache(&info_file)) + error = 1; + + end_io_cache(&info_file); + if (info_fd >= 0) + my_close(info_fd, MYF(0)); +skip_overwrite: + if (error) { + fprintf(stderr, + "InnoDB: ERROR: error occured during overwriting relay-log.info.\n"); + } else { + fprintf(stderr, + "InnoDB: relay-log.info was overwritten.\n"); + } + } else { + fprintf(stderr, + "InnoDB: InnoDB and relay-log.info are synchronized. InnoDB will not overwrite it.\n"); + } + } +#endif /* MYSQL_SERVER */ +#endif /* HAVE_REPLICATION */ + + + srv_extra_undoslots = (ibool) innobase_extra_undoslots; + + /* -------------- Log files ---------------------------*/ + + /* The default dir for log files is the datadir of MySQL */ + + if (!innobase_log_group_home_dir) { + innobase_log_group_home_dir = default_path; + } + +#ifdef UNIV_LOG_ARCHIVE + /* Since innodb_log_arch_dir has no relevance under MySQL, + starting from 4.0.6 we always set it the same as + innodb_log_group_home_dir: */ + + innobase_log_arch_dir = innobase_log_group_home_dir; + + srv_arch_dir = innobase_log_arch_dir; +#endif /* UNIG_LOG_ARCHIVE */ + + ret = (bool) + srv_parse_log_group_home_dirs(innobase_log_group_home_dir); + + if (ret == FALSE || innobase_mirrored_log_groups != 1) { + sql_print_error("syntax error in innodb_log_group_home_dir, or a " + "wrong number of mirrored log groups"); + + goto mem_free_and_error; + } + + /* Validate the file format by animal name */ + if (innobase_file_format_name != NULL) { + + format_id = innobase_file_format_name_lookup( + innobase_file_format_name); + + if (format_id > DICT_TF_FORMAT_MAX) { + + sql_print_error("InnoDB: wrong innodb_file_format."); + + goto mem_free_and_error; + } + } else { + /* Set it to the default file format id. Though this + should never happen. */ + format_id = 0; + } + + srv_file_format = format_id; + + /* Given the type of innobase_file_format_name we have little + choice but to cast away the constness from the returned name. + innobase_file_format_name is used in the MySQL set variable + interface and so can't be const. */ + + innobase_file_format_name = + (char*) trx_sys_file_format_id_to_name(format_id); + + /* Process innobase_file_format_check variable */ + ut_a(innobase_file_format_check != NULL); + + /* As a side effect it will set srv_check_file_format_at_startup + on valid input. First we check for "on"/"off". */ + if (!innobase_file_format_check_on_off(innobase_file_format_check)) { + + /* Did the user specify a format name that we support ? + As a side effect it will update the variable + srv_check_file_format_at_startup */ + if (!innobase_file_format_check_validate( + innobase_file_format_check)) { + + sql_print_error("InnoDB: invalid " + "innodb_file_format_check value: " + "should be either 'on' or 'off' or " + "any value up to %s or its " + "equivalent numeric id", + trx_sys_file_format_id_to_name( + DICT_TF_FORMAT_MAX)); + + goto mem_free_and_error; + } + } + + ut_a((ulint) ibuf_use < UT_ARR_SIZE(innobase_change_buffering_values)); + innobase_change_buffering = (char*) + innobase_change_buffering_values[ibuf_use]; + + /* --------------------------------------------------*/ + + srv_file_flush_method_str = innobase_unix_file_flush_method; + + srv_n_log_groups = (ulint) innobase_mirrored_log_groups; + srv_n_log_files = (ulint) innobase_log_files_in_group; + srv_log_file_size = (ulint) innobase_log_file_size; + +#ifdef UNIV_LOG_ARCHIVE + srv_log_archive_on = (ulint) innobase_log_archive; +#endif /* UNIV_LOG_ARCHIVE */ + srv_log_buffer_size = (ulint) innobase_log_buffer_size; + + srv_buf_pool_size = (ulint) innobase_buffer_pool_size; + + srv_mem_pool_size = (ulint) innobase_additional_mem_pool_size; + + srv_n_file_io_threads = (ulint) innobase_file_io_threads; + srv_n_read_io_threads = (ulint) innobase_read_io_threads; + srv_n_write_io_threads = (ulint) innobase_write_io_threads; + + srv_read_ahead &= 3; + + srv_force_recovery = (ulint) innobase_force_recovery; + + srv_use_doublewrite_buf = (ibool) innobase_use_doublewrite; + srv_use_checksums = (ibool) innobase_use_checksums; + +#ifdef HAVE_LARGE_PAGES + if ((os_use_large_pages = (ibool) my_use_large_pages)) + os_large_page_size = (ulint) opt_large_page_size; +#endif + + row_rollback_on_timeout = (ibool) innobase_rollback_on_timeout; + + srv_locks_unsafe_for_binlog = (ibool) innobase_locks_unsafe_for_binlog; + + srv_max_n_open_files = (ulint) innobase_open_files; + srv_innodb_status = (ibool) innobase_create_status_file; + + srv_print_verbose_log = mysqld_embedded ? 0 : 1; + + /* Store the default charset-collation number of this MySQL + installation */ + + data_mysql_default_charset_coll = (ulint)default_charset_info->number; + + ut_a(DATA_MYSQL_LATIN1_SWEDISH_CHARSET_COLL == + my_charset_latin1.number); + ut_a(DATA_MYSQL_BINARY_CHARSET_COLL == my_charset_bin.number); + + /* Store the latin1_swedish_ci character ordering table to InnoDB. For + non-latin1_swedish_ci charsets we use the MySQL comparison functions, + and consequently we do not need to know the ordering internally in + InnoDB. */ + + ut_a(0 == strcmp(my_charset_latin1.name, "latin1_swedish_ci")); + srv_latin1_ordering = my_charset_latin1.sort_order; + + /* Since we in this module access directly the fields of a trx + struct, and due to different headers and flags it might happen that + mutex_t has a different size in this module and in InnoDB + modules, we check at run time that the size is the same in + these compilation modules. */ + + err = innobase_start_or_create_for_mysql(); + + if (err != DB_SUCCESS) { + goto mem_free_and_error; + } + + innobase_open_tables = hash_create(200); + pthread_mutex_init(&innobase_share_mutex, MY_MUTEX_INIT_FAST); + pthread_mutex_init(&prepare_commit_mutex, MY_MUTEX_INIT_FAST); + pthread_mutex_init(&commit_threads_m, MY_MUTEX_INIT_FAST); + pthread_mutex_init(&commit_cond_m, MY_MUTEX_INIT_FAST); + pthread_cond_init(&commit_cond, NULL); + innodb_inited= 1; +#ifdef MYSQL_DYNAMIC_PLUGIN + if (innobase_hton != p) { + innobase_hton = reinterpret_cast<handlerton*>(p); + *innobase_hton = *innodb_hton_ptr; + } +#endif /* MYSQL_DYNAMIC_PLUGIN */ + + /* Get the current high water mark format. */ + innobase_file_format_check = (char*) trx_sys_file_format_max_get(); + + DBUG_RETURN(FALSE); +error: + DBUG_RETURN(TRUE); +} + +/*********************************************************************** +Closes an InnoDB database. */ +static +int +innobase_end(handlerton *hton, ha_panic_function type) +/*==============*/ + /* out: TRUE if error */ +{ + int err= 0; + + DBUG_ENTER("innobase_end"); + DBUG_ASSERT(hton == innodb_hton_ptr); + +#ifdef __NETWARE__ /* some special cleanup for NetWare */ + if (nw_panic) { + set_panic_flag_for_netware(); + } +#endif + if (innodb_inited) { + + srv_fast_shutdown = (ulint) innobase_fast_shutdown; + innodb_inited = 0; + hash_table_free(innobase_open_tables); + innobase_open_tables = NULL; + if (innobase_shutdown_for_mysql() != DB_SUCCESS) { + err = 1; + } + srv_free_paths_and_sizes(); + my_free(internal_innobase_data_file_path, + MYF(MY_ALLOW_ZERO_PTR)); + pthread_mutex_destroy(&innobase_share_mutex); + pthread_mutex_destroy(&prepare_commit_mutex); + pthread_mutex_destroy(&commit_threads_m); + pthread_mutex_destroy(&commit_cond_m); + pthread_cond_destroy(&commit_cond); + } + + DBUG_RETURN(err); +} + +/******************************************************************** +Flushes InnoDB logs to disk and makes a checkpoint. Really, a commit flushes +the logs, and the name of this function should be innobase_checkpoint. */ +static +bool +innobase_flush_logs(handlerton *hton) +/*=====================*/ + /* out: TRUE if error */ +{ + bool result = 0; + + DBUG_ENTER("innobase_flush_logs"); + DBUG_ASSERT(hton == innodb_hton_ptr); + + log_buffer_flush_to_disk(); + + DBUG_RETURN(result); +} + +/******************************************************************** +Return alter table flags supported in an InnoDB database. */ +static +uint +innobase_alter_table_flags( +/*=======================*/ + uint flags) +{ + return(HA_ONLINE_ADD_INDEX_NO_WRITES + | HA_ONLINE_DROP_INDEX_NO_WRITES + | HA_ONLINE_ADD_UNIQUE_INDEX_NO_WRITES + | HA_ONLINE_DROP_UNIQUE_INDEX_NO_WRITES + | HA_ONLINE_ADD_PK_INDEX_NO_WRITES); +} + +/********************************************************************* +Commits a transaction in an InnoDB database. */ +static +void +innobase_commit_low( +/*================*/ + trx_t* trx) /* in: transaction handle */ +{ + if (trx->conc_state == TRX_NOT_STARTED) { + + return; + } + +#ifdef HAVE_REPLICATION +#ifdef MYSQL_SERVER + THD *thd=current_thd; + + if (thd && thd->slave_thread) { + /* Update the replication position info inside InnoDB. + In embedded server, does nothing. */ + const char *log_file_name, *group_relay_log_name; + ulonglong log_pos, relay_log_pos; + bool res = rpl_get_position_info(&log_file_name, &log_pos, + &group_relay_log_name, + &relay_log_pos); + if (res) { + trx->mysql_master_log_file_name = log_file_name; + trx->mysql_master_log_pos = (ib_int64_t)log_pos; + trx->mysql_relay_log_file_name = group_relay_log_name; + trx->mysql_relay_log_pos = (ib_int64_t)relay_log_pos; + } + } +#endif /* MYSQL_SERVER */ +#endif /* HAVE_REPLICATION */ + + trx_commit_for_mysql(trx); +} + +/********************************************************************* +Creates an InnoDB transaction struct for the thd if it does not yet have one. +Starts a new InnoDB transaction if a transaction is not yet started. And +assigns a new snapshot for a consistent read if the transaction does not yet +have one. */ +static +int +innobase_start_trx_and_assign_read_view( +/*====================================*/ + /* out: 0 */ + handlerton *hton, /* in: Innodb handlerton */ + THD* thd) /* in: MySQL thread handle of the user for whom + the transaction should be committed */ +{ + trx_t* trx; + + DBUG_ENTER("innobase_start_trx_and_assign_read_view"); + DBUG_ASSERT(hton == innodb_hton_ptr); + + /* Create a new trx struct for thd, if it does not yet have one */ + + trx = check_trx_exists(thd); + + /* This is just to play safe: release a possible FIFO ticket and + search latch. Since we will reserve the kernel mutex, we have to + release the search system latch first to obey the latching order. */ + + innobase_release_stat_resources(trx); + + /* If the transaction is not started yet, start it */ + + trx_start_if_not_started(trx); + + /* Assign a read view if the transaction does not have it yet */ + + trx_assign_read_view(trx); + + /* Set the MySQL flag to mark that there is an active transaction */ + + if (trx->active_trans == 0) { + innobase_register_trx_and_stmt(hton, thd); + trx->active_trans = 1; + } + + DBUG_RETURN(0); +} + +/********************************************************************* +Commits a transaction in an InnoDB database or marks an SQL statement +ended. */ +static +int +innobase_commit( +/*============*/ + /* out: 0 */ + handlerton *hton, /* in: Innodb handlerton */ + THD* thd, /* in: MySQL thread handle of the user for whom + the transaction should be committed */ + bool all) /* in: TRUE - commit transaction + FALSE - the current SQL statement ended */ +{ + trx_t* trx; + + DBUG_ENTER("innobase_commit"); + DBUG_ASSERT(hton == innodb_hton_ptr); + DBUG_PRINT("trans", ("ending transaction")); + + trx = check_trx_exists(thd); + + /* Since we will reserve the kernel mutex, we have to release + the search system latch first to obey the latching order. */ + + if (trx->has_search_latch) { + trx_search_latch_release_if_reserved(trx); + } + + /* The flag trx->active_trans is set to 1 in + + 1. ::external_lock(), + 2. ::start_stmt(), + 3. innobase_query_caching_of_table_permitted(), + 4. innobase_savepoint(), + 5. ::init_table_handle_for_HANDLER(), + 6. innobase_start_trx_and_assign_read_view(), + 7. ::transactional_table_lock() + + and it is only set to 0 in a commit or a rollback. If it is 0 we know + there cannot be resources to be freed and we could return immediately. + For the time being, we play safe and do the cleanup though there should + be nothing to clean up. */ + + if (trx->active_trans == 0 + && trx->conc_state != TRX_NOT_STARTED) { + + sql_print_error("trx->active_trans == 0, but" + " trx->conc_state != TRX_NOT_STARTED"); + } + if (all + || (!thd_test_options(thd, OPTION_NOT_AUTOCOMMIT | OPTION_BEGIN))) { + + /* We were instructed to commit the whole transaction, or + this is an SQL statement end and autocommit is on */ + + /* We need current binlog position for ibbackup to work. + Note, the position is current because of + prepare_commit_mutex */ +retry: + if (srv_commit_concurrency > 0) { + pthread_mutex_lock(&commit_cond_m); + commit_threads++; + + if (commit_threads > srv_commit_concurrency) { + commit_threads--; + pthread_cond_wait(&commit_cond, + &commit_cond_m); + pthread_mutex_unlock(&commit_cond_m); + goto retry; + } + else { + pthread_mutex_unlock(&commit_cond_m); + } + } + + trx->mysql_log_file_name = mysql_bin_log_file_name(); + trx->mysql_log_offset = (ib_int64_t) mysql_bin_log_file_pos(); + + innobase_commit_low(trx); + + if (srv_commit_concurrency > 0) { + pthread_mutex_lock(&commit_cond_m); + commit_threads--; + pthread_cond_signal(&commit_cond); + pthread_mutex_unlock(&commit_cond_m); + } + + if (trx->active_trans == 2) { + + pthread_mutex_unlock(&prepare_commit_mutex); + } + + trx->active_trans = 0; + + } else { + /* We just mark the SQL statement ended and do not do a + transaction commit */ + + /* If we had reserved the auto-inc lock for some + table in this SQL statement we release it now */ + + row_unlock_table_autoinc_for_mysql(trx); + + /* Store the current undo_no of the transaction so that we + know where to roll back if we have to roll back the next + SQL statement */ + + trx_mark_sql_stat_end(trx); + } + + trx->n_autoinc_rows = 0; /* Reset the number AUTO-INC rows required */ + + if (trx->declared_to_be_inside_innodb) { + /* Release our possible ticket in the FIFO */ + + srv_conc_force_exit_innodb(trx); + } + + /* Tell the InnoDB server that there might be work for utility + threads: */ + srv_active_wake_master_thread(); + + DBUG_RETURN(0); +} + +/********************************************************************* +Rolls back a transaction or the latest SQL statement. */ +static +int +innobase_rollback( +/*==============*/ + /* out: 0 or error number */ + handlerton *hton, /* in: Innodb handlerton */ + THD* thd, /* in: handle to the MySQL thread of the user + whose transaction should be rolled back */ + bool all) /* in: TRUE - commit transaction + FALSE - the current SQL statement ended */ +{ + int error = 0; + trx_t* trx; + + DBUG_ENTER("innobase_rollback"); + DBUG_ASSERT(hton == innodb_hton_ptr); + DBUG_PRINT("trans", ("aborting transaction")); + + trx = check_trx_exists(thd); + + /* Release a possible FIFO ticket and search latch. Since we will + reserve the kernel mutex, we have to release the search system latch + first to obey the latching order. */ + + innobase_release_stat_resources(trx); + + /* If we had reserved the auto-inc lock for some table (if + we come here to roll back the latest SQL statement) we + release it now before a possibly lengthy rollback */ + + row_unlock_table_autoinc_for_mysql(trx); + + if (all + || !thd_test_options(thd, OPTION_NOT_AUTOCOMMIT | OPTION_BEGIN)) { + + error = trx_rollback_for_mysql(trx); + trx->active_trans = 0; + } else { + error = trx_rollback_last_sql_stat_for_mysql(trx); + } + + DBUG_RETURN(convert_error_code_to_mysql(error, 0, NULL)); +} + +/********************************************************************* +Rolls back a transaction */ +static +int +innobase_rollback_trx( +/*==================*/ + /* out: 0 or error number */ + trx_t* trx) /* in: transaction */ +{ + int error = 0; + + DBUG_ENTER("innobase_rollback_trx"); + DBUG_PRINT("trans", ("aborting transaction")); + + /* Release a possible FIFO ticket and search latch. Since we will + reserve the kernel mutex, we have to release the search system latch + first to obey the latching order. */ + + innobase_release_stat_resources(trx); + + /* If we had reserved the auto-inc lock for some table (if + we come here to roll back the latest SQL statement) we + release it now before a possibly lengthy rollback */ + + row_unlock_table_autoinc_for_mysql(trx); + + error = trx_rollback_for_mysql(trx); + + DBUG_RETURN(convert_error_code_to_mysql(error, 0, NULL)); +} + +/********************************************************************* +Rolls back a transaction to a savepoint. */ +static +int +innobase_rollback_to_savepoint( +/*===========================*/ + /* out: 0 if success, HA_ERR_NO_SAVEPOINT if + no savepoint with the given name */ + handlerton *hton, /* in: Innodb handlerton */ + THD* thd, /* in: handle to the MySQL thread of the user + whose transaction should be rolled back */ + void* savepoint) /* in: savepoint data */ +{ + ib_int64_t mysql_binlog_cache_pos; + int error = 0; + trx_t* trx; + char name[64]; + + DBUG_ENTER("innobase_rollback_to_savepoint"); + DBUG_ASSERT(hton == innodb_hton_ptr); + + trx = check_trx_exists(thd); + + /* Release a possible FIFO ticket and search latch. Since we will + reserve the kernel mutex, we have to release the search system latch + first to obey the latching order. */ + + innobase_release_stat_resources(trx); + + /* TODO: use provided savepoint data area to store savepoint data */ + + longlong2str((ulint)savepoint, name, 36); + + error = (int) trx_rollback_to_savepoint_for_mysql(trx, name, + &mysql_binlog_cache_pos); + DBUG_RETURN(convert_error_code_to_mysql(error, 0, NULL)); +} + +/********************************************************************* +Release transaction savepoint name. */ +static +int +innobase_release_savepoint( +/*=======================*/ + /* out: 0 if success, HA_ERR_NO_SAVEPOINT if + no savepoint with the given name */ + handlerton* hton, /* in: handlerton for Innodb */ + THD* thd, /* in: handle to the MySQL thread of the user + whose transaction should be rolled back */ + void* savepoint) /* in: savepoint data */ +{ + int error = 0; + trx_t* trx; + char name[64]; + + DBUG_ENTER("innobase_release_savepoint"); + DBUG_ASSERT(hton == innodb_hton_ptr); + + trx = check_trx_exists(thd); + + /* TODO: use provided savepoint data area to store savepoint data */ + + longlong2str((ulint)savepoint, name, 36); + + error = (int) trx_release_savepoint_for_mysql(trx, name); + + DBUG_RETURN(convert_error_code_to_mysql(error, 0, NULL)); +} + +/********************************************************************* +Sets a transaction savepoint. */ +static +int +innobase_savepoint( +/*===============*/ + /* out: always 0, that is, always succeeds */ + handlerton* hton, /* in: handle to the Innodb handlerton */ + THD* thd, /* in: handle to the MySQL thread */ + void* savepoint) /* in: savepoint data */ +{ + int error = 0; + trx_t* trx; + + DBUG_ENTER("innobase_savepoint"); + DBUG_ASSERT(hton == innodb_hton_ptr); + + /* + In the autocommit mode there is no sense to set a savepoint + (unless we are in sub-statement), so SQL layer ensures that + this method is never called in such situation. + */ +#ifdef MYSQL_SERVER /* plugins cannot access thd->in_sub_stmt */ + DBUG_ASSERT(thd_test_options(thd, OPTION_NOT_AUTOCOMMIT | OPTION_BEGIN) || + thd->in_sub_stmt); +#endif /* MYSQL_SERVER */ + + trx = check_trx_exists(thd); + + /* Release a possible FIFO ticket and search latch. Since we will + reserve the kernel mutex, we have to release the search system latch + first to obey the latching order. */ + + innobase_release_stat_resources(trx); + + /* cannot happen outside of transaction */ + DBUG_ASSERT(trx->active_trans); + + /* TODO: use provided savepoint data area to store savepoint data */ + char name[64]; + longlong2str((ulint)savepoint,name,36); + + error = (int) trx_savepoint_for_mysql(trx, name, (ib_int64_t)0); + + DBUG_RETURN(convert_error_code_to_mysql(error, 0, NULL)); +} + +/********************************************************************* +Frees a possible InnoDB trx object associated with the current THD. */ +static +int +innobase_close_connection( +/*======================*/ + /* out: 0 or error number */ + handlerton* hton, /* in: innobase handlerton */ + THD* thd) /* in: handle to the MySQL thread of the user + whose resources should be free'd */ +{ + trx_t* trx; + + DBUG_ENTER("innobase_close_connection"); + DBUG_ASSERT(hton == innodb_hton_ptr); + trx = thd_to_trx(thd); + + ut_a(trx); + + if (trx->active_trans == 0 + && trx->conc_state != TRX_NOT_STARTED) { + + sql_print_error("trx->active_trans == 0, but" + " trx->conc_state != TRX_NOT_STARTED"); + } + + + if (trx->conc_state != TRX_NOT_STARTED && + global_system_variables.log_warnings) { + sql_print_warning( + "MySQL is closing a connection that has an active " + "InnoDB transaction. %lu row modifications will " + "roll back.", + (ulong) trx->undo_no.low); + } + + innobase_rollback_trx(trx); + + thr_local_free(trx->mysql_thread_id); + trx_free_for_mysql(trx); + + DBUG_RETURN(0); +} + + +/***************************************************************************** +** InnoDB database tables +*****************************************************************************/ + +/******************************************************************** +Get the record format from the data dictionary. */ +UNIV_INTERN +enum row_type +ha_innobase::get_row_type() const +/*=============================*/ + /* out: one of + ROW_TYPE_REDUNDANT, + ROW_TYPE_COMPACT, + ROW_TYPE_COMPRESSED, + ROW_TYPE_DYNAMIC */ +{ + if (prebuilt && prebuilt->table) { + const ulint flags = prebuilt->table->flags; + + if (UNIV_UNLIKELY(!flags)) { + return(ROW_TYPE_REDUNDANT); + } + + ut_ad(flags & DICT_TF_COMPACT); + + switch (flags & DICT_TF_FORMAT_MASK) { + case DICT_TF_FORMAT_51 << DICT_TF_FORMAT_SHIFT: + return(ROW_TYPE_COMPACT); + case DICT_TF_FORMAT_ZIP << DICT_TF_FORMAT_SHIFT: + if (flags & DICT_TF_ZSSIZE_MASK) { + return(ROW_TYPE_COMPRESSED); + } else { + return(ROW_TYPE_DYNAMIC); + } +#if DICT_TF_FORMAT_ZIP != DICT_TF_FORMAT_MAX +# error "DICT_TF_FORMAT_ZIP != DICT_TF_FORMAT_MAX" +#endif + } + } + ut_ad(0); + return(ROW_TYPE_NOT_USED); +} + + + +/******************************************************************** +Get the table flags to use for the statement. */ +UNIV_INTERN +handler::Table_flags +ha_innobase::table_flags() const +{ + /* Need to use tx_isolation here since table flags is (also) + called before prebuilt is inited. */ + ulong const tx_isolation = thd_tx_isolation(ha_thd()); + if (tx_isolation <= ISO_READ_COMMITTED) + return int_table_flags; + return int_table_flags | HA_BINLOG_STMT_CAPABLE; +} + +/******************************************************************** +Gives the file extension of an InnoDB single-table tablespace. */ +static const char* ha_innobase_exts[] = { + ".ibd", + NullS +}; + +UNIV_INTERN +const char* +ha_innobase::table_type() const +/*===========================*/ + /* out: table type */ +{ + return(innobase_hton_name); +} + +UNIV_INTERN +const char* +ha_innobase::index_type(uint) +/*=========================*/ + /* out: index type */ +{ + return("BTREE"); +} + +UNIV_INTERN +const char** +ha_innobase::bas_ext() const +/*========================*/ + /* out: file extension string */ +{ + return(ha_innobase_exts); +} + +UNIV_INTERN +ulong +ha_innobase::index_flags(uint, uint, bool) const +{ + return(HA_READ_NEXT | HA_READ_PREV | HA_READ_ORDER + | HA_READ_RANGE | HA_KEYREAD_ONLY); +} + +UNIV_INTERN +uint +ha_innobase::max_supported_keys() const +{ + return(MAX_KEY); +} + +UNIV_INTERN +uint +ha_innobase::max_supported_key_length() const +{ + /* An InnoDB page must store >= 2 keys; a secondary key record + must also contain the primary key value: max key length is + therefore set to slightly less than 1 / 4 of page size which + is 16 kB; but currently MySQL does not work with keys whose + size is > MAX_KEY_LENGTH */ + return(3500); +} + +UNIV_INTERN +const key_map* +ha_innobase::keys_to_use_for_scanning() +{ + return(&key_map_full); +} + +UNIV_INTERN +uint8 +ha_innobase::table_cache_type() +{ + return(HA_CACHE_TBL_ASKTRANSACT); +} + +UNIV_INTERN +bool +ha_innobase::primary_key_is_clustered() +{ + return(true); +} + +/********************************************************************* +Normalizes a table name string. A normalized name consists of the +database name catenated to '/' and table name. An example: +test/mytable. On Windows normalization puts both the database name and the +table name always to lower case. */ +static +void +normalize_table_name( +/*=================*/ + char* norm_name, /* out: normalized name as a + null-terminated string */ + const char* name) /* in: table name string */ +{ + char* name_ptr; + char* db_ptr; + char* ptr; + + /* Scan name from the end */ + + ptr = strend(name)-1; + + while (ptr >= name && *ptr != '\\' && *ptr != '/') { + ptr--; + } + + name_ptr = ptr + 1; + + DBUG_ASSERT(ptr > name); + + ptr--; + + while (ptr >= name && *ptr != '\\' && *ptr != '/') { + ptr--; + } + + db_ptr = ptr + 1; + + memcpy(norm_name, db_ptr, strlen(name) + 1 - (db_ptr - name)); + + norm_name[name_ptr - db_ptr - 1] = '/'; + +#ifdef __WIN__ + innobase_casedn_str(norm_name); +#endif +} + +/************************************************************************ +Set the autoinc column max value. This should only be called once from +ha_innobase::open(). Therefore there's no need for a covering lock. */ +UNIV_INTERN +ulint +ha_innobase::innobase_initialize_autoinc() +/*======================================*/ +{ + dict_index_t* index; + ulonglong auto_inc; + const char* col_name; + ulint error = DB_SUCCESS; + dict_table_t* innodb_table = prebuilt->table; + + col_name = table->found_next_number_field->field_name; + index = innobase_get_index(table->s->next_number_index); + + /* Execute SELECT MAX(col_name) FROM TABLE; */ + error = row_search_max_autoinc(index, col_name, &auto_inc); + + if (error == DB_SUCCESS) { + + /* At the this stage we dont' know the increment + or the offset, so use default inrement of 1. */ + ++auto_inc; + + dict_table_autoinc_initialize(innodb_table, auto_inc); + + } else { + ut_print_timestamp(stderr); + fprintf(stderr, " InnoDB: Error: (%lu) Couldn't read " + "the MAX(%s) autoinc value from the " + "index (%s).\n", error, col_name, index->name); + } + + return(error); +} + +/********************************************************************* +Creates and opens a handle to a table which already exists in an InnoDB +database. */ +UNIV_INTERN +int +ha_innobase::open( +/*==============*/ + /* out: 1 if error, 0 if success */ + const char* name, /* in: table name */ + int mode, /* in: not used */ + uint test_if_locked) /* in: not used */ +{ + dict_table_t* ib_table; + char norm_name[1000]; + THD* thd; + ulint retries = 0; + char* is_part = NULL; + + DBUG_ENTER("ha_innobase::open"); + + UT_NOT_USED(mode); + UT_NOT_USED(test_if_locked); + + thd = ha_thd(); + + /* Under some cases MySQL seems to call this function while + holding btr_search_latch. This breaks the latching order as + we acquire dict_sys->mutex below and leads to a deadlock. */ + if (thd != NULL) { + innobase_release_temporary_latches(ht, thd); + } + + normalize_table_name(norm_name, name); + + user_thd = NULL; + + if (!(share=get_share(name))) { + + DBUG_RETURN(1); + } + + /* Create buffers for packing the fields of a record. Why + table->reclength did not work here? Obviously, because char + fields when packed actually became 1 byte longer, when we also + stored the string length as the first byte. */ + + upd_and_key_val_buff_len = + table->s->reclength + table->s->max_key_length + + MAX_REF_PARTS * 3; + if (!(uchar*) my_multi_malloc(MYF(MY_WME), + &upd_buff, upd_and_key_val_buff_len, + &key_val_buff, upd_and_key_val_buff_len, + NullS)) { + free_share(share); + + DBUG_RETURN(1); + } + + /* We look for pattern #P# to see if the table is partitioned + MySQL table. The retry logic for partitioned tables is a + workaround for http://bugs.mysql.com/bug.php?id=33349. Look + at support issue https://support.mysql.com/view.php?id=21080 + for more details. */ + is_part = strstr(norm_name, "#P#"); +retry: + /* Get pointer to a table object in InnoDB dictionary cache */ + ib_table = dict_table_get(norm_name, TRUE); + + if (NULL == ib_table) { + if (is_part && retries < 10) { + ++retries; + os_thread_sleep(100000); + goto retry; + } + + if (is_part) { + sql_print_error("Failed to open table %s after " + "%lu attemtps.\n", norm_name, + retries); + } + + sql_print_error("Cannot find or open table %s from\n" + "the internal data dictionary of InnoDB " + "though the .frm file for the\n" + "table exists. Maybe you have deleted and " + "recreated InnoDB data\n" + "files but have forgotten to delete the " + "corresponding .frm files\n" + "of InnoDB tables, or you have moved .frm " + "files to another database?\n" + "or, the table contains indexes that this " + "version of the engine\n" + "doesn't support.\n" + "See http://dev.mysql.com/doc/refman/5.1/en/innodb-troubleshooting.html\n" + "how you can resolve the problem.\n", + norm_name); + free_share(share); + my_free(upd_buff, MYF(0)); + my_errno = ENOENT; + + DBUG_RETURN(HA_ERR_NO_SUCH_TABLE); + } + + if (ib_table->ibd_file_missing && !thd_tablespace_op(thd)) { + sql_print_error("MySQL is trying to open a table handle but " + "the .ibd file for\ntable %s does not exist.\n" + "Have you deleted the .ibd file from the " + "database directory under\nthe MySQL datadir, " + "or have you used DISCARD TABLESPACE?\n" + "See http://dev.mysql.com/doc/refman/5.1/en/innodb-troubleshooting.html\n" + "how you can resolve the problem.\n", + norm_name); + free_share(share); + my_free(upd_buff, MYF(0)); + my_errno = ENOENT; + + dict_table_decrement_handle_count(ib_table, FALSE); + DBUG_RETURN(HA_ERR_NO_SUCH_TABLE); + } + + prebuilt = row_create_prebuilt(ib_table); + + prebuilt->mysql_row_len = table->s->reclength; + prebuilt->default_rec = table->s->default_values; + ut_ad(prebuilt->default_rec); + + /* Looks like MySQL-3.23 sometimes has primary key number != 0 */ + + primary_key = table->s->primary_key; + key_used_on_scan = primary_key; + + /* Allocate a buffer for a 'row reference'. A row reference is + a string of bytes of length ref_length which uniquely specifies + a row in our table. Note that MySQL may also compare two row + references for equality by doing a simple memcmp on the strings + of length ref_length! */ + + if (!row_table_got_default_clust_index(ib_table)) { + if (primary_key >= MAX_KEY) { + sql_print_error("Table %s has a primary key in InnoDB data " + "dictionary, but not in MySQL!", name); + } + + prebuilt->clust_index_was_generated = FALSE; + + /* MySQL allocates the buffer for ref. key_info->key_length + includes space for all key columns + one byte for each column + that may be NULL. ref_length must be as exact as possible to + save space, because all row reference buffers are allocated + based on ref_length. */ + + ref_length = table->key_info[primary_key].key_length; + } else { + if (primary_key != MAX_KEY) { + sql_print_error("Table %s has no primary key in InnoDB data " + "dictionary, but has one in MySQL! If you " + "created the table with a MySQL version < " + "3.23.54 and did not define a primary key, " + "but defined a unique key with all non-NULL " + "columns, then MySQL internally treats that " + "key as the primary key. You can fix this " + "error by dump + DROP + CREATE + reimport " + "of the table.", name); + } + + prebuilt->clust_index_was_generated = TRUE; + + ref_length = DATA_ROW_ID_LEN; + + /* If we automatically created the clustered index, then + MySQL does not know about it, and MySQL must NOT be aware + of the index used on scan, to make it avoid checking if we + update the column of the index. That is why we assert below + that key_used_on_scan is the undefined value MAX_KEY. + The column is the row id in the automatical generation case, + and it will never be updated anyway. */ + + if (key_used_on_scan != MAX_KEY) { + sql_print_warning( + "Table %s key_used_on_scan is %lu even " + "though there is no primary key inside " + "InnoDB.", name, (ulong) key_used_on_scan); + } + } + + /* Index block size in InnoDB: used by MySQL in query optimization */ + stats.block_size = 16 * 1024; + + /* Init table lock structure */ + thr_lock_data_init(&share->lock,&lock,(void*) 0); + + if (prebuilt->table) { + /* We update the highest file format in the system table + space, if this table has higher file format setting. */ + + trx_sys_file_format_max_upgrade( + (const char**) &innobase_file_format_check, + dict_table_get_format(prebuilt->table)); + } + + info(HA_STATUS_NO_LOCK | HA_STATUS_VARIABLE | HA_STATUS_CONST); + + /* Only if the table has an AUTOINC column. */ + if (prebuilt->table != NULL && table->found_next_number_field != NULL) { + ulint error; + + dict_table_autoinc_lock(prebuilt->table); + + /* Since a table can already be "open" in InnoDB's internal + data dictionary, we only init the autoinc counter once, the + first time the table is loaded. We can safely reuse the + autoinc value from a previous MySQL open. */ + if (dict_table_autoinc_read(prebuilt->table) == 0) { + + error = innobase_initialize_autoinc(); + /* Should always succeed! */ + ut_a(error == DB_SUCCESS); + } + + dict_table_autoinc_unlock(prebuilt->table); + } + + DBUG_RETURN(0); +} + +UNIV_INTERN +uint +ha_innobase::max_supported_key_part_length() const +{ + return(DICT_MAX_INDEX_COL_LEN - 1); +} + +/********************************************************************** +Closes a handle to an InnoDB table. */ +UNIV_INTERN +int +ha_innobase::close(void) +/*====================*/ + /* out: 0 */ +{ + THD* thd; + + DBUG_ENTER("ha_innobase::close"); + + thd = ha_thd(); + if (thd != NULL) { + innobase_release_temporary_latches(ht, thd); + } + + row_prebuilt_free(prebuilt, FALSE); + + my_free(upd_buff, MYF(0)); + free_share(share); + + /* Tell InnoDB server that there might be work for + utility threads: */ + + srv_active_wake_master_thread(); + + DBUG_RETURN(0); +} + +/* The following accessor functions should really be inside MySQL code! */ + +/****************************************************************** +Gets field offset for a field in a table. */ +static inline +uint +get_field_offset( +/*=============*/ + /* out: offset */ + TABLE* table, /* in: MySQL table object */ + Field* field) /* in: MySQL field object */ +{ + return((uint) (field->ptr - table->record[0])); +} + +/****************************************************************** +Checks if a field in a record is SQL NULL. Uses the record format +information in table to track the null bit in record. */ +static inline +uint +field_in_record_is_null( +/*====================*/ + /* out: 1 if NULL, 0 otherwise */ + TABLE* table, /* in: MySQL table object */ + Field* field, /* in: MySQL field object */ + char* record) /* in: a row in MySQL format */ +{ + int null_offset; + + if (!field->null_ptr) { + + return(0); + } + + null_offset = (uint) ((char*) field->null_ptr + - (char*) table->record[0]); + + if (record[null_offset] & field->null_bit) { + + return(1); + } + + return(0); +} + +/****************************************************************** +Sets a field in a record to SQL NULL. Uses the record format +information in table to track the null bit in record. */ +static inline +void +set_field_in_record_to_null( +/*========================*/ + TABLE* table, /* in: MySQL table object */ + Field* field, /* in: MySQL field object */ + char* record) /* in: a row in MySQL format */ +{ + int null_offset; + + null_offset = (uint) ((char*) field->null_ptr + - (char*) table->record[0]); + + record[null_offset] = record[null_offset] | field->null_bit; +} + +/***************************************************************** +InnoDB uses this function to compare two data fields for which the data type +is such that we must use MySQL code to compare them. NOTE that the prototype +of this function is in rem0cmp.c in InnoDB source code! If you change this +function, remember to update the prototype there! */ +extern "C" UNIV_INTERN +int +innobase_mysql_cmp( +/*===============*/ + /* out: 1, 0, -1, if a is greater, + equal, less than b, respectively */ + int mysql_type, /* in: MySQL type */ + uint charset_number, /* in: number of the charset */ + const unsigned char* a, /* in: data field */ + unsigned int a_length, /* in: data field length, + not UNIV_SQL_NULL */ + const unsigned char* b, /* in: data field */ + unsigned int b_length) /* in: data field length, + not UNIV_SQL_NULL */ +{ + CHARSET_INFO* charset; + enum_field_types mysql_tp; + int ret; + + DBUG_ASSERT(a_length != UNIV_SQL_NULL); + DBUG_ASSERT(b_length != UNIV_SQL_NULL); + + mysql_tp = (enum_field_types) mysql_type; + + switch (mysql_tp) { + + case MYSQL_TYPE_BIT: + case MYSQL_TYPE_STRING: + case MYSQL_TYPE_VAR_STRING: + case MYSQL_TYPE_TINY_BLOB: + case MYSQL_TYPE_MEDIUM_BLOB: + case MYSQL_TYPE_BLOB: + case MYSQL_TYPE_LONG_BLOB: + case MYSQL_TYPE_VARCHAR: + /* Use the charset number to pick the right charset struct for + the comparison. Since the MySQL function get_charset may be + slow before Bar removes the mutex operation there, we first + look at 2 common charsets directly. */ + + if (charset_number == default_charset_info->number) { + charset = default_charset_info; + } else if (charset_number == my_charset_latin1.number) { + charset = &my_charset_latin1; + } else { + charset = get_charset(charset_number, MYF(MY_WME)); + + if (charset == NULL) { + sql_print_error("InnoDB needs charset %lu for doing " + "a comparison, but MySQL cannot " + "find that charset.", + (ulong) charset_number); + ut_a(0); + } + } + + /* Starting from 4.1.3, we use strnncollsp() in comparisons of + non-latin1_swedish_ci strings. NOTE that the collation order + changes then: 'b\0\0...' is ordered BEFORE 'b ...'. Users + having indexes on such data need to rebuild their tables! */ + + ret = charset->coll->strnncollsp(charset, + a, a_length, + b, b_length, 0); + if (ret < 0) { + return(-1); + } else if (ret > 0) { + return(1); + } else { + return(0); + } + default: + ut_error; + } + + return(0); +} + +/****************************************************************** +Converts a MySQL type to an InnoDB type. Note that this function returns +the 'mtype' of InnoDB. InnoDB differentiates between MySQL's old <= 4.1 +VARCHAR and the new true VARCHAR in >= 5.0.3 by the 'prtype'. */ +extern "C" UNIV_INTERN +ulint +get_innobase_type_from_mysql_type( +/*==============================*/ + /* out: DATA_BINARY, + DATA_VARCHAR, ... */ + ulint* unsigned_flag, /* out: DATA_UNSIGNED if an + 'unsigned type'; + at least ENUM and SET, + and unsigned integer + types are 'unsigned types' */ + const void* f) /* in: MySQL Field */ +{ + const class Field* field = reinterpret_cast<const class Field*>(f); + + /* The following asserts try to check that the MySQL type code fits in + 8 bits: this is used in ibuf and also when DATA_NOT_NULL is ORed to + the type */ + + DBUG_ASSERT((ulint)MYSQL_TYPE_STRING < 256); + DBUG_ASSERT((ulint)MYSQL_TYPE_VAR_STRING < 256); + DBUG_ASSERT((ulint)MYSQL_TYPE_DOUBLE < 256); + DBUG_ASSERT((ulint)MYSQL_TYPE_FLOAT < 256); + DBUG_ASSERT((ulint)MYSQL_TYPE_DECIMAL < 256); + + if (field->flags & UNSIGNED_FLAG) { + + *unsigned_flag = DATA_UNSIGNED; + } else { + *unsigned_flag = 0; + } + + if (field->real_type() == MYSQL_TYPE_ENUM + || field->real_type() == MYSQL_TYPE_SET) { + + /* MySQL has field->type() a string type for these, but the + data is actually internally stored as an unsigned integer + code! */ + + *unsigned_flag = DATA_UNSIGNED; /* MySQL has its own unsigned + flag set to zero, even though + internally this is an unsigned + integer type */ + return(DATA_INT); + } + + switch (field->type()) { + /* NOTE that we only allow string types in DATA_MYSQL and + DATA_VARMYSQL */ + case MYSQL_TYPE_VAR_STRING: /* old <= 4.1 VARCHAR */ + case MYSQL_TYPE_VARCHAR: /* new >= 5.0.3 true VARCHAR */ + if (field->binary()) { + return(DATA_BINARY); + } else if (strcmp( + field->charset()->name, + "latin1_swedish_ci") == 0) { + return(DATA_VARCHAR); + } else { + return(DATA_VARMYSQL); + } + case MYSQL_TYPE_BIT: + case MYSQL_TYPE_STRING: if (field->binary()) { + + return(DATA_FIXBINARY); + } else if (strcmp( + field->charset()->name, + "latin1_swedish_ci") == 0) { + return(DATA_CHAR); + } else { + return(DATA_MYSQL); + } + case MYSQL_TYPE_NEWDECIMAL: + return(DATA_FIXBINARY); + case MYSQL_TYPE_LONG: + case MYSQL_TYPE_LONGLONG: + case MYSQL_TYPE_TINY: + case MYSQL_TYPE_SHORT: + case MYSQL_TYPE_INT24: + case MYSQL_TYPE_DATE: + case MYSQL_TYPE_DATETIME: + case MYSQL_TYPE_YEAR: + case MYSQL_TYPE_NEWDATE: + case MYSQL_TYPE_TIME: + case MYSQL_TYPE_TIMESTAMP: + return(DATA_INT); + case MYSQL_TYPE_FLOAT: + return(DATA_FLOAT); + case MYSQL_TYPE_DOUBLE: + return(DATA_DOUBLE); + case MYSQL_TYPE_DECIMAL: + return(DATA_DECIMAL); + case MYSQL_TYPE_GEOMETRY: + case MYSQL_TYPE_TINY_BLOB: + case MYSQL_TYPE_MEDIUM_BLOB: + case MYSQL_TYPE_BLOB: + case MYSQL_TYPE_LONG_BLOB: + return(DATA_BLOB); + default: + ut_error; + } + + return(0); +} + +/*********************************************************************** +Writes an unsigned integer value < 64k to 2 bytes, in the little-endian +storage format. */ +static inline +void +innobase_write_to_2_little_endian( +/*==============================*/ + byte* buf, /* in: where to store */ + ulint val) /* in: value to write, must be < 64k */ +{ + ut_a(val < 256 * 256); + + buf[0] = (byte)(val & 0xFF); + buf[1] = (byte)(val / 256); +} + +/*********************************************************************** +Reads an unsigned integer value < 64k from 2 bytes, in the little-endian +storage format. */ +static inline +uint +innobase_read_from_2_little_endian( +/*===============================*/ + /* out: value */ + const uchar* buf) /* in: from where to read */ +{ + return (uint) ((ulint)(buf[0]) + 256 * ((ulint)(buf[1]))); +} + +/*********************************************************************** +Stores a key value for a row to a buffer. */ +UNIV_INTERN +uint +ha_innobase::store_key_val_for_row( +/*===============================*/ + /* out: key value length as stored in buff */ + uint keynr, /* in: key number */ + char* buff, /* in/out: buffer for the key value (in MySQL + format) */ + uint buff_len,/* in: buffer length */ + const uchar* record)/* in: row in MySQL format */ +{ + KEY* key_info = table->key_info + keynr; + KEY_PART_INFO* key_part = key_info->key_part; + KEY_PART_INFO* end = key_part + key_info->key_parts; + char* buff_start = buff; + enum_field_types mysql_type; + Field* field; + ibool is_null; + + DBUG_ENTER("store_key_val_for_row"); + + /* The format for storing a key field in MySQL is the following: + + 1. If the column can be NULL, then in the first byte we put 1 if the + field value is NULL, 0 otherwise. + + 2. If the column is of a BLOB type (it must be a column prefix field + in this case), then we put the length of the data in the field to the + next 2 bytes, in the little-endian format. If the field is SQL NULL, + then these 2 bytes are set to 0. Note that the length of data in the + field is <= column prefix length. + + 3. In a column prefix field, prefix_len next bytes are reserved for + data. In a normal field the max field length next bytes are reserved + for data. For a VARCHAR(n) the max field length is n. If the stored + value is the SQL NULL then these data bytes are set to 0. + + 4. We always use a 2 byte length for a true >= 5.0.3 VARCHAR. Note that + in the MySQL row format, the length is stored in 1 or 2 bytes, + depending on the maximum allowed length. But in the MySQL key value + format, the length always takes 2 bytes. + + We have to zero-fill the buffer so that MySQL is able to use a + simple memcmp to compare two key values to determine if they are + equal. MySQL does this to compare contents of two 'ref' values. */ + + bzero(buff, buff_len); + + for (; key_part != end; key_part++) { + is_null = FALSE; + + if (key_part->null_bit) { + if (record[key_part->null_offset] + & key_part->null_bit) { + *buff = 1; + is_null = TRUE; + } else { + *buff = 0; + } + buff++; + } + + field = key_part->field; + mysql_type = field->type(); + + if (mysql_type == MYSQL_TYPE_VARCHAR) { + /* >= 5.0.3 true VARCHAR */ + ulint lenlen; + ulint len; + const byte* data; + ulint key_len; + ulint true_len; + CHARSET_INFO* cs; + int error=0; + + key_len = key_part->length; + + if (is_null) { + buff += key_len + 2; + + continue; + } + cs = field->charset(); + + lenlen = (ulint) + (((Field_varstring*)field)->length_bytes); + + data = row_mysql_read_true_varchar(&len, + (byte*) (record + + (ulint)get_field_offset(table, field)), + lenlen); + + true_len = len; + + /* For multi byte character sets we need to calculate + the true length of the key */ + + if (len > 0 && cs->mbmaxlen > 1) { + true_len = (ulint) cs->cset->well_formed_len(cs, + (const char *) data, + (const char *) data + len, + (uint) (key_len / + cs->mbmaxlen), + &error); + } + + /* In a column prefix index, we may need to truncate + the stored value: */ + + if (true_len > key_len) { + true_len = key_len; + } + + /* The length in a key value is always stored in 2 + bytes */ + + row_mysql_store_true_var_len((byte*)buff, true_len, 2); + buff += 2; + + memcpy(buff, data, true_len); + + /* Note that we always reserve the maximum possible + length of the true VARCHAR in the key value, though + only len first bytes after the 2 length bytes contain + actual data. The rest of the space was reset to zero + in the bzero() call above. */ + + buff += key_len; + + } else if (mysql_type == MYSQL_TYPE_TINY_BLOB + || mysql_type == MYSQL_TYPE_MEDIUM_BLOB + || mysql_type == MYSQL_TYPE_BLOB + || mysql_type == MYSQL_TYPE_LONG_BLOB) { + + CHARSET_INFO* cs; + ulint key_len; + ulint true_len; + int error=0; + ulint blob_len; + const byte* blob_data; + + ut_a(key_part->key_part_flag & HA_PART_KEY_SEG); + + key_len = key_part->length; + + if (is_null) { + buff += key_len + 2; + + continue; + } + + cs = field->charset(); + + blob_data = row_mysql_read_blob_ref(&blob_len, + (byte*) (record + + (ulint)get_field_offset(table, field)), + (ulint) field->pack_length()); + + true_len = blob_len; + + ut_a(get_field_offset(table, field) + == key_part->offset); + + /* For multi byte character sets we need to calculate + the true length of the key */ + + if (blob_len > 0 && cs->mbmaxlen > 1) { + true_len = (ulint) cs->cset->well_formed_len(cs, + (const char *) blob_data, + (const char *) blob_data + + blob_len, + (uint) (key_len / + cs->mbmaxlen), + &error); + } + + /* All indexes on BLOB and TEXT are column prefix + indexes, and we may need to truncate the data to be + stored in the key value: */ + + if (true_len > key_len) { + true_len = key_len; + } + + /* MySQL reserves 2 bytes for the length and the + storage of the number is little-endian */ + + innobase_write_to_2_little_endian( + (byte*)buff, true_len); + buff += 2; + + memcpy(buff, blob_data, true_len); + + /* Note that we always reserve the maximum possible + length of the BLOB prefix in the key value. */ + + buff += key_len; + } else { + /* Here we handle all other data types except the + true VARCHAR, BLOB and TEXT. Note that the column + value we store may be also in a column prefix + index. */ + + CHARSET_INFO* cs; + ulint true_len; + ulint key_len; + const uchar* src_start; + int error=0; + enum_field_types real_type; + + key_len = key_part->length; + + if (is_null) { + buff += key_len; + + continue; + } + + src_start = record + key_part->offset; + real_type = field->real_type(); + true_len = key_len; + + /* Character set for the field is defined only + to fields whose type is string and real field + type is not enum or set. For these fields check + if character set is multi byte. */ + + if (real_type != MYSQL_TYPE_ENUM + && real_type != MYSQL_TYPE_SET + && ( mysql_type == MYSQL_TYPE_VAR_STRING + || mysql_type == MYSQL_TYPE_STRING)) { + + cs = field->charset(); + + /* For multi byte character sets we need to + calculate the true length of the key */ + + if (key_len > 0 && cs->mbmaxlen > 1) { + + true_len = (ulint) + cs->cset->well_formed_len(cs, + (const char *)src_start, + (const char *)src_start + + key_len, + (uint) (key_len / + cs->mbmaxlen), + &error); + } + } + + memcpy(buff, src_start, true_len); + buff += true_len; + + /* Pad the unused space with spaces. Note that no + padding is ever needed for UCS-2 because in MySQL, + all UCS2 characters are 2 bytes, as MySQL does not + support surrogate pairs, which are needed to represent + characters in the range U+10000 to U+10FFFF. */ + + if (true_len < key_len) { + ulint pad_len = key_len - true_len; + memset(buff, ' ', pad_len); + buff += pad_len; + } + } + } + + ut_a(buff <= buff_start + buff_len); + + DBUG_RETURN((uint)(buff - buff_start)); +} + +/****************************************************************** +Builds a 'template' to the prebuilt struct. The template is used in fast +retrieval of just those column values MySQL needs in its processing. */ +static +void +build_template( +/*===========*/ + row_prebuilt_t* prebuilt, /* in/out: prebuilt struct */ + THD* thd, /* in: current user thread, used + only if templ_type is + ROW_MYSQL_REC_FIELDS */ + TABLE* table, /* in: MySQL table */ + uint templ_type) /* in: ROW_MYSQL_WHOLE_ROW or + ROW_MYSQL_REC_FIELDS */ +{ + dict_index_t* index; + dict_index_t* clust_index; + mysql_row_templ_t* templ; + Field* field; + ulint n_fields; + ulint n_requested_fields = 0; + ibool fetch_all_in_key = FALSE; + ibool fetch_primary_key_cols = FALSE; + ulint i; + /* byte offset of the end of last requested column */ + ulint mysql_prefix_len = 0; + + if (prebuilt->select_lock_type == LOCK_X) { + /* We always retrieve the whole clustered index record if we + use exclusive row level locks, for example, if the read is + done in an UPDATE statement. */ + + templ_type = ROW_MYSQL_WHOLE_ROW; + } + + if (templ_type == ROW_MYSQL_REC_FIELDS) { + if (prebuilt->hint_need_to_fetch_extra_cols + == ROW_RETRIEVE_ALL_COLS) { + + /* We know we must at least fetch all columns in the + key, or all columns in the table */ + + if (prebuilt->read_just_key) { + /* MySQL has instructed us that it is enough + to fetch the columns in the key; looks like + MySQL can set this flag also when there is + only a prefix of the column in the key: in + that case we retrieve the whole column from + the clustered index */ + + fetch_all_in_key = TRUE; + } else { + templ_type = ROW_MYSQL_WHOLE_ROW; + } + } else if (prebuilt->hint_need_to_fetch_extra_cols + == ROW_RETRIEVE_PRIMARY_KEY) { + /* We must at least fetch all primary key cols. Note + that if the clustered index was internally generated + by InnoDB on the row id (no primary key was + defined), then row_search_for_mysql() will always + retrieve the row id to a special buffer in the + prebuilt struct. */ + + fetch_primary_key_cols = TRUE; + } + } + + clust_index = dict_table_get_first_index(prebuilt->table); + + if (templ_type == ROW_MYSQL_REC_FIELDS) { + index = prebuilt->index; + } else { + index = clust_index; + } + + if (index == clust_index) { + prebuilt->need_to_access_clustered = TRUE; + } else { + prebuilt->need_to_access_clustered = FALSE; + /* Below we check column by column if we need to access + the clustered index */ + } + + n_fields = (ulint)table->s->fields; /* number of columns */ + + if (!prebuilt->mysql_template) { + prebuilt->mysql_template = (mysql_row_templ_t*) + mem_alloc(n_fields * sizeof(mysql_row_templ_t)); + } + + prebuilt->template_type = templ_type; + prebuilt->null_bitmap_len = table->s->null_bytes; + + prebuilt->templ_contains_blob = FALSE; + + /* Note that in InnoDB, i is the column number. MySQL calls columns + 'fields'. */ + for (i = 0; i < n_fields; i++) { + templ = prebuilt->mysql_template + n_requested_fields; + field = table->field[i]; + + if (UNIV_LIKELY(templ_type == ROW_MYSQL_REC_FIELDS)) { + /* Decide which columns we should fetch + and which we can skip. */ + register const ibool index_contains_field = + dict_index_contains_col_or_prefix(index, i); + + if (!index_contains_field && prebuilt->read_just_key) { + /* If this is a 'key read', we do not need + columns that are not in the key */ + + goto skip_field; + } + + if (index_contains_field && fetch_all_in_key) { + /* This field is needed in the query */ + + goto include_field; + } + + if (bitmap_is_set(table->read_set, i) || + bitmap_is_set(table->write_set, i)) { + /* This field is needed in the query */ + + goto include_field; + } + + if (fetch_primary_key_cols + && dict_table_col_in_clustered_key( + index->table, i)) { + /* This field is needed in the query */ + + goto include_field; + } + + /* This field is not needed in the query, skip it */ + + goto skip_field; + } +include_field: + n_requested_fields++; + + templ->col_no = i; + + if (index == clust_index) { + templ->rec_field_no = dict_col_get_clust_pos( + &index->table->cols[i], index); + } else { + templ->rec_field_no = dict_index_get_nth_col_pos( + index, i); + } + + if (templ->rec_field_no == ULINT_UNDEFINED) { + prebuilt->need_to_access_clustered = TRUE; + } + + if (field->null_ptr) { + templ->mysql_null_byte_offset = + (ulint) ((char*) field->null_ptr + - (char*) table->record[0]); + + templ->mysql_null_bit_mask = (ulint) field->null_bit; + } else { + templ->mysql_null_bit_mask = 0; + } + + templ->mysql_col_offset = (ulint) + get_field_offset(table, field); + + templ->mysql_col_len = (ulint) field->pack_length(); + if (mysql_prefix_len < templ->mysql_col_offset + + templ->mysql_col_len) { + mysql_prefix_len = templ->mysql_col_offset + + templ->mysql_col_len; + } + templ->type = index->table->cols[i].mtype; + templ->mysql_type = (ulint)field->type(); + + if (templ->mysql_type == DATA_MYSQL_TRUE_VARCHAR) { + templ->mysql_length_bytes = (ulint) + (((Field_varstring*)field)->length_bytes); + } + + templ->charset = dtype_get_charset_coll( + index->table->cols[i].prtype); + templ->mbminlen = index->table->cols[i].mbminlen; + templ->mbmaxlen = index->table->cols[i].mbmaxlen; + templ->is_unsigned = index->table->cols[i].prtype + & DATA_UNSIGNED; + if (templ->type == DATA_BLOB) { + prebuilt->templ_contains_blob = TRUE; + } +skip_field: + ; + } + + prebuilt->n_template = n_requested_fields; + prebuilt->mysql_prefix_len = mysql_prefix_len; + + if (index != clust_index && prebuilt->need_to_access_clustered) { + /* Change rec_field_no's to correspond to the clustered index + record */ + for (i = 0; i < n_requested_fields; i++) { + templ = prebuilt->mysql_template + i; + + templ->rec_field_no = dict_col_get_clust_pos( + &index->table->cols[templ->col_no], + clust_index); + } + } +} + +/************************************************************************ +Get the upper limit of the MySQL integral and floating-point type. */ +UNIV_INTERN +ulonglong +ha_innobase::innobase_get_int_col_max_value( +/*========================================*/ + const Field* field) +{ + ulonglong max_value = 0; + + switch(field->key_type()) { + /* TINY */ + case HA_KEYTYPE_BINARY: + max_value = 0xFFULL; + break; + case HA_KEYTYPE_INT8: + max_value = 0x7FULL; + break; + /* SHORT */ + case HA_KEYTYPE_USHORT_INT: + max_value = 0xFFFFULL; + break; + case HA_KEYTYPE_SHORT_INT: + max_value = 0x7FFFULL; + break; + /* MEDIUM */ + case HA_KEYTYPE_UINT24: + max_value = 0xFFFFFFULL; + break; + case HA_KEYTYPE_INT24: + max_value = 0x7FFFFFULL; + break; + /* LONG */ + case HA_KEYTYPE_ULONG_INT: + max_value = 0xFFFFFFFFULL; + break; + case HA_KEYTYPE_LONG_INT: + max_value = 0x7FFFFFFFULL; + break; + /* BIG */ + case HA_KEYTYPE_ULONGLONG: + max_value = 0xFFFFFFFFFFFFFFFFULL; + break; + case HA_KEYTYPE_LONGLONG: + max_value = 0x7FFFFFFFFFFFFFFFULL; + break; + case HA_KEYTYPE_FLOAT: + /* We use the maximum as per IEEE754-2008 standard, 2^24 */ + max_value = 0x1000000ULL; + break; + case HA_KEYTYPE_DOUBLE: + /* We use the maximum as per IEEE754-2008 standard, 2^53 */ + max_value = 0x20000000000000ULL; + break; + default: + ut_error; + } + + return(max_value); +} + +/************************************************************************ +This special handling is really to overcome the limitations of MySQL's +binlogging. We need to eliminate the non-determinism that will arise in +INSERT ... SELECT type of statements, since MySQL binlog only stores the +min value of the autoinc interval. Once that is fixed we can get rid of +the special lock handling.*/ +UNIV_INTERN +ulint +ha_innobase::innobase_lock_autoinc(void) +/*====================================*/ + /* out: DB_SUCCESS if all OK else + error code */ +{ + ulint error = DB_SUCCESS; + + switch (innobase_autoinc_lock_mode) { + case AUTOINC_NO_LOCKING: + /* Acquire only the AUTOINC mutex. */ + dict_table_autoinc_lock(prebuilt->table); + break; + + case AUTOINC_NEW_STYLE_LOCKING: + /* For simple (single/multi) row INSERTs, we fallback to the + old style only if another transaction has already acquired + the AUTOINC lock on behalf of a LOAD FILE or INSERT ... SELECT + etc. type of statement. */ + if (thd_sql_command(user_thd) == SQLCOM_INSERT + || thd_sql_command(user_thd) == SQLCOM_REPLACE) { + dict_table_t* table = prebuilt->table; + + /* Acquire the AUTOINC mutex. */ + dict_table_autoinc_lock(table); + + /* We need to check that another transaction isn't + already holding the AUTOINC lock on the table. */ + if (table->n_waiting_or_granted_auto_inc_locks) { + /* Release the mutex to avoid deadlocks. */ + dict_table_autoinc_unlock(table); + } else { + break; + } + } + /* Fall through to old style locking. */ + + case AUTOINC_OLD_STYLE_LOCKING: + error = row_lock_table_autoinc_for_mysql(prebuilt); + + if (error == DB_SUCCESS) { + + /* Acquire the AUTOINC mutex. */ + dict_table_autoinc_lock(prebuilt->table); + } + break; + + default: + ut_error; + } + + return(ulong(error)); +} + +/************************************************************************ +Reset the autoinc value in the table.*/ +UNIV_INTERN +ulint +ha_innobase::innobase_reset_autoinc( +/*================================*/ + /* out: DB_SUCCESS if all went well + else error code */ + ulonglong autoinc) /* in: value to store */ +{ + ulint error; + + error = innobase_lock_autoinc(); + + if (error == DB_SUCCESS) { + + dict_table_autoinc_initialize(prebuilt->table, autoinc); + + dict_table_autoinc_unlock(prebuilt->table); + } + + return(ulong(error)); +} + +/************************************************************************ +Store the autoinc value in the table. The autoinc value is only set if +it's greater than the existing autoinc value in the table.*/ +UNIV_INTERN +ulint +ha_innobase::innobase_set_max_autoinc( +/*==================================*/ + /* out: DB_SUCCES if all went well + else error code */ + ulonglong auto_inc) /* in: value to store */ +{ + ulint error; + + error = innobase_lock_autoinc(); + + if (error == DB_SUCCESS) { + + dict_table_autoinc_update_if_greater(prebuilt->table, auto_inc); + + dict_table_autoinc_unlock(prebuilt->table); + } + + return(ulong(error)); +} + +/************************************************************************ +Stores a row in an InnoDB database, to the table specified in this +handle. */ +UNIV_INTERN +int +ha_innobase::write_row( +/*===================*/ + /* out: error code */ + uchar* record) /* in: a row in MySQL format */ +{ + ulint error = 0; + int error_result= 0; + ibool auto_inc_used= FALSE; + ulint sql_command; + trx_t* trx = thd_to_trx(user_thd); + + DBUG_ENTER("ha_innobase::write_row"); + + if (prebuilt->trx != trx) { + sql_print_error("The transaction object for the table handle is at " + "%p, but for the current thread it is at %p", + (const void*) prebuilt->trx, (const void*) trx); + + fputs("InnoDB: Dump of 200 bytes around prebuilt: ", stderr); + ut_print_buf(stderr, ((const byte*)prebuilt) - 100, 200); + fputs("\n" + "InnoDB: Dump of 200 bytes around ha_data: ", + stderr); + ut_print_buf(stderr, ((const byte*) trx) - 100, 200); + putc('\n', stderr); + ut_error; + } + + ha_statistic_increment(&SSV::ha_write_count); + + if (table->timestamp_field_type & TIMESTAMP_AUTO_SET_ON_INSERT) + table->timestamp_field->set_time(); + + sql_command = thd_sql_command(user_thd); + + if ((sql_command == SQLCOM_ALTER_TABLE + || sql_command == SQLCOM_OPTIMIZE + || sql_command == SQLCOM_CREATE_INDEX + || sql_command == SQLCOM_DROP_INDEX) + && num_write_row >= 10000) { + /* ALTER TABLE is COMMITted at every 10000 copied rows. + The IX table lock for the original table has to be re-issued. + As this method will be called on a temporary table where the + contents of the original table is being copied to, it is + a bit tricky to determine the source table. The cursor + position in the source table need not be adjusted after the + intermediate COMMIT, since writes by other transactions are + being blocked by a MySQL table lock TL_WRITE_ALLOW_READ. */ + + dict_table_t* src_table; + enum lock_mode mode; + + num_write_row = 0; + + /* Commit the transaction. This will release the table + locks, so they have to be acquired again. */ + + /* Altering an InnoDB table */ + /* Get the source table. */ + src_table = lock_get_src_table( + prebuilt->trx, prebuilt->table, &mode); + if (!src_table) { +no_commit: + /* Unknown situation: do not commit */ + /* + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: ALTER TABLE is holding lock" + " on %lu tables!\n", + prebuilt->trx->mysql_n_tables_locked); + */ + ; + } else if (src_table == prebuilt->table) { + /* Source table is not in InnoDB format: + no need to re-acquire locks on it. */ + + /* Altering to InnoDB format */ + innobase_commit(ht, user_thd, 1); + /* Note that this transaction is still active. */ + prebuilt->trx->active_trans = 1; + /* We will need an IX lock on the destination table. */ + prebuilt->sql_stat_start = TRUE; + } else { + /* Ensure that there are no other table locks than + LOCK_IX and LOCK_AUTO_INC on the destination table. */ + + if (!lock_is_table_exclusive(prebuilt->table, + prebuilt->trx)) { + goto no_commit; + } + + /* Commit the transaction. This will release the table + locks, so they have to be acquired again. */ + innobase_commit(ht, user_thd, 1); + /* Note that this transaction is still active. */ + prebuilt->trx->active_trans = 1; + /* Re-acquire the table lock on the source table. */ + row_lock_table_for_mysql(prebuilt, src_table, mode); + /* We will need an IX lock on the destination table. */ + prebuilt->sql_stat_start = TRUE; + } + } + + num_write_row++; + + /* This is the case where the table has an auto-increment column */ + if (table->next_number_field && record == table->record[0]) { + + /* Reset the error code before calling + innobase_get_auto_increment(). */ + prebuilt->autoinc_error = DB_SUCCESS; + + if ((error = update_auto_increment())) { + + /* We don't want to mask autoinc overflow errors. */ + if (prebuilt->autoinc_error != DB_SUCCESS) { + error = (int) prebuilt->autoinc_error; + + goto report_error; + } + + /* MySQL errors are passed straight back. */ + error_result = (int) error; + goto func_exit; + } + + auto_inc_used = TRUE; + } + + if (prebuilt->mysql_template == NULL + || prebuilt->template_type != ROW_MYSQL_WHOLE_ROW) { + + /* Build the template used in converting quickly between + the two database formats */ + + build_template(prebuilt, NULL, table, ROW_MYSQL_WHOLE_ROW); + } + + innodb_srv_conc_enter_innodb(prebuilt->trx); + + error = row_insert_for_mysql((byte*) record, prebuilt); + + /* Handle duplicate key errors */ + if (auto_inc_used) { + ulint err; + ulonglong auto_inc; + ulonglong col_max_value; + + /* Note the number of rows processed for this statement, used + by get_auto_increment() to determine the number of AUTO-INC + values to reserve. This is only useful for a mult-value INSERT + and is a statement level counter.*/ + if (trx->n_autoinc_rows > 0) { + --trx->n_autoinc_rows; + } + + /* We need the upper limit of the col type to check for + whether we update the table autoinc counter or not. */ + col_max_value = innobase_get_int_col_max_value( + table->next_number_field); + + /* Get the value that MySQL attempted to store in the table.*/ + auto_inc = table->next_number_field->val_int(); + + switch (error) { + case DB_DUPLICATE_KEY: + + /* A REPLACE command and LOAD DATA INFILE REPLACE + handle a duplicate key error themselves, but we + must update the autoinc counter if we are performing + those statements. */ + + switch (sql_command) { + case SQLCOM_LOAD: + if ((trx->duplicates + & (TRX_DUP_IGNORE | TRX_DUP_REPLACE))) { + + goto set_max_autoinc; + } + break; + + case SQLCOM_REPLACE: + case SQLCOM_INSERT_SELECT: + case SQLCOM_REPLACE_SELECT: + goto set_max_autoinc; + + default: + break; + } + + break; + + case DB_SUCCESS: + /* If the actual value inserted is greater than + the upper limit of the interval, then we try and + update the table upper limit. Note: last_value + will be 0 if get_auto_increment() was not called.*/ + + if (auto_inc <= col_max_value + && auto_inc >= prebuilt->autoinc_last_value) { +set_max_autoinc: + ut_a(prebuilt->autoinc_increment > 0); + + ulonglong need; + ulonglong offset; + + offset = prebuilt->autoinc_offset; + need = prebuilt->autoinc_increment; + + auto_inc = innobase_next_autoinc( + auto_inc, need, offset, col_max_value); + + err = innobase_set_max_autoinc(auto_inc); + + if (err != DB_SUCCESS) { + error = err; + } + } + break; + } + } + + innodb_srv_conc_exit_innodb(prebuilt->trx); + +report_error: + error_result = convert_error_code_to_mysql((int) error, + prebuilt->table->flags, + user_thd); + +func_exit: + innobase_active_small(); + + DBUG_RETURN(error_result); +} + +/************************************************************************** +Checks which fields have changed in a row and stores information +of them to an update vector. */ +static +int +calc_row_difference( +/*================*/ + /* out: error number or 0 */ + upd_t* uvect, /* in/out: update vector */ + uchar* old_row, /* in: old row in MySQL format */ + uchar* new_row, /* in: new row in MySQL format */ + struct st_table* table, /* in: table in MySQL data + dictionary */ + uchar* upd_buff, /* in: buffer to use */ + ulint buff_len, /* in: buffer length */ + row_prebuilt_t* prebuilt, /* in: InnoDB prebuilt struct */ + THD* thd) /* in: user thread */ +{ + uchar* original_upd_buff = upd_buff; + Field* field; + enum_field_types field_mysql_type; + uint n_fields; + ulint o_len; + ulint n_len; + ulint col_pack_len; + const byte* new_mysql_row_col; + const byte* o_ptr; + const byte* n_ptr; + byte* buf; + upd_field_t* ufield; + ulint col_type; + ulint n_changed = 0; + dfield_t dfield; + dict_index_t* clust_index; + uint i; + + n_fields = table->s->fields; + clust_index = dict_table_get_first_index(prebuilt->table); + + /* We use upd_buff to convert changed fields */ + buf = (byte*) upd_buff; + + for (i = 0; i < n_fields; i++) { + field = table->field[i]; + + o_ptr = (const byte*) old_row + get_field_offset(table, field); + n_ptr = (const byte*) new_row + get_field_offset(table, field); + + /* Use new_mysql_row_col and col_pack_len save the values */ + + new_mysql_row_col = n_ptr; + col_pack_len = field->pack_length(); + + o_len = col_pack_len; + n_len = col_pack_len; + + /* We use o_ptr and n_ptr to dig up the actual data for + comparison. */ + + field_mysql_type = field->type(); + + col_type = prebuilt->table->cols[i].mtype; + + switch (col_type) { + + case DATA_BLOB: + o_ptr = row_mysql_read_blob_ref(&o_len, o_ptr, o_len); + n_ptr = row_mysql_read_blob_ref(&n_len, n_ptr, n_len); + + break; + + case DATA_VARCHAR: + case DATA_BINARY: + case DATA_VARMYSQL: + if (field_mysql_type == MYSQL_TYPE_VARCHAR) { + /* This is a >= 5.0.3 type true VARCHAR where + the real payload data length is stored in + 1 or 2 bytes */ + + o_ptr = row_mysql_read_true_varchar( + &o_len, o_ptr, + (ulint) + (((Field_varstring*)field)->length_bytes)); + + n_ptr = row_mysql_read_true_varchar( + &n_len, n_ptr, + (ulint) + (((Field_varstring*)field)->length_bytes)); + } + + break; + default: + ; + } + + if (field->null_ptr) { + if (field_in_record_is_null(table, field, + (char*) old_row)) { + o_len = UNIV_SQL_NULL; + } + + if (field_in_record_is_null(table, field, + (char*) new_row)) { + n_len = UNIV_SQL_NULL; + } + } + + if (o_len != n_len || (o_len != UNIV_SQL_NULL && + 0 != memcmp(o_ptr, n_ptr, o_len))) { + /* The field has changed */ + + ufield = uvect->fields + n_changed; + + /* Let us use a dummy dfield to make the conversion + from the MySQL column format to the InnoDB format */ + + dict_col_copy_type(prebuilt->table->cols + i, + dfield_get_type(&dfield)); + + if (n_len != UNIV_SQL_NULL) { + buf = row_mysql_store_col_in_innobase_format( + &dfield, + (byte*)buf, + TRUE, + new_mysql_row_col, + col_pack_len, + dict_table_is_comp(prebuilt->table)); + dfield_copy_data(&ufield->new_val, &dfield); + } else { + dfield_set_null(&ufield->new_val); + } + + ufield->exp = NULL; + ufield->orig_len = 0; + ufield->field_no = dict_col_get_clust_pos( + &prebuilt->table->cols[i], clust_index); + n_changed++; + } + } + + uvect->n_fields = n_changed; + uvect->info_bits = 0; + + ut_a(buf <= (byte*)original_upd_buff + buff_len); + + return(0); +} + +/************************************************************************** +Updates a row given as a parameter to a new value. Note that we are given +whole rows, not just the fields which are updated: this incurs some +overhead for CPU when we check which fields are actually updated. +TODO: currently InnoDB does not prevent the 'Halloween problem': +in a searched update a single row can get updated several times +if its index columns are updated! */ +UNIV_INTERN +int +ha_innobase::update_row( +/*====================*/ + /* out: error number or 0 */ + const uchar* old_row, /* in: old row in MySQL format */ + uchar* new_row) /* in: new row in MySQL format */ +{ + upd_t* uvect; + int error = 0; + trx_t* trx = thd_to_trx(user_thd); + + DBUG_ENTER("ha_innobase::update_row"); + + ut_a(prebuilt->trx == trx); + + ha_statistic_increment(&SSV::ha_update_count); + + if (table->timestamp_field_type & TIMESTAMP_AUTO_SET_ON_UPDATE) + table->timestamp_field->set_time(); + + if (prebuilt->upd_node) { + uvect = prebuilt->upd_node->update; + } else { + uvect = row_get_prebuilt_update_vector(prebuilt); + } + + /* Build an update vector from the modified fields in the rows + (uses upd_buff of the handle) */ + + calc_row_difference(uvect, (uchar*) old_row, new_row, table, + upd_buff, (ulint)upd_and_key_val_buff_len, + prebuilt, user_thd); + + /* This is not a delete */ + prebuilt->upd_node->is_delete = FALSE; + + ut_a(prebuilt->template_type == ROW_MYSQL_WHOLE_ROW); + + innodb_srv_conc_enter_innodb(trx); + + error = row_update_for_mysql((byte*) old_row, prebuilt); + + /* We need to do some special AUTOINC handling for the following case: + + INSERT INTO t (c1,c2) VALUES(x,y) ON DUPLICATE KEY UPDATE ... + + We need to use the AUTOINC counter that was actually used by + MySQL in the UPDATE statement, which can be different from the + value used in the INSERT statement.*/ + + if (error == DB_SUCCESS + && table->next_number_field + && new_row == table->record[0] + && thd_sql_command(user_thd) == SQLCOM_INSERT + && (trx->duplicates & (TRX_DUP_IGNORE | TRX_DUP_REPLACE)) + == TRX_DUP_IGNORE) { + + ulonglong auto_inc; + ulonglong col_max_value; + + auto_inc = table->next_number_field->val_int(); + + /* We need the upper limit of the col type to check for + whether we update the table autoinc counter or not. */ + col_max_value = innobase_get_int_col_max_value( + table->next_number_field); + + if (auto_inc <= col_max_value && auto_inc != 0) { + + ulonglong need; + ulonglong offset; + + offset = prebuilt->autoinc_offset; + need = prebuilt->autoinc_increment; + + auto_inc = innobase_next_autoinc( + auto_inc, need, offset, col_max_value); + + error = innobase_set_max_autoinc(auto_inc); + } + } + + innodb_srv_conc_exit_innodb(trx); + + error = convert_error_code_to_mysql(error, + prebuilt->table->flags, user_thd); + + if (error == 0 /* success */ + && uvect->n_fields == 0 /* no columns were updated */) { + + /* This is the same as success, but instructs + MySQL that the row is not really updated and it + should not increase the count of updated rows. + This is fix for http://bugs.mysql.com/29157 */ + error = HA_ERR_RECORD_IS_THE_SAME; + } + + /* Tell InnoDB server that there might be work for + utility threads: */ + + innobase_active_small(); + + DBUG_RETURN(error); +} + +/************************************************************************** +Deletes a row given as the parameter. */ +UNIV_INTERN +int +ha_innobase::delete_row( +/*====================*/ + /* out: error number or 0 */ + const uchar* record) /* in: a row in MySQL format */ +{ + int error = 0; + trx_t* trx = thd_to_trx(user_thd); + + DBUG_ENTER("ha_innobase::delete_row"); + + ut_a(prebuilt->trx == trx); + + ha_statistic_increment(&SSV::ha_delete_count); + + if (!prebuilt->upd_node) { + row_get_prebuilt_update_vector(prebuilt); + } + + /* This is a delete */ + + prebuilt->upd_node->is_delete = TRUE; + + innodb_srv_conc_enter_innodb(trx); + + error = row_update_for_mysql((byte*) record, prebuilt); + + innodb_srv_conc_exit_innodb(trx); + + error = convert_error_code_to_mysql( + error, prebuilt->table->flags, user_thd); + + /* Tell the InnoDB server that there might be work for + utility threads: */ + + innobase_active_small(); + + DBUG_RETURN(error); +} + +/************************************************************************** +Removes a new lock set on a row, if it was not read optimistically. This can +be called after a row has been read in the processing of an UPDATE or a DELETE +query, if the option innodb_locks_unsafe_for_binlog is set. */ +UNIV_INTERN +void +ha_innobase::unlock_row(void) +/*=========================*/ +{ + DBUG_ENTER("ha_innobase::unlock_row"); + + /* Consistent read does not take any locks, thus there is + nothing to unlock. */ + + if (prebuilt->select_lock_type == LOCK_NONE) { + DBUG_VOID_RETURN; + } + + switch (prebuilt->row_read_type) { + case ROW_READ_WITH_LOCKS: + if (!srv_locks_unsafe_for_binlog + && prebuilt->trx->isolation_level + != TRX_ISO_READ_COMMITTED) { + break; + } + /* fall through */ + case ROW_READ_TRY_SEMI_CONSISTENT: + row_unlock_for_mysql(prebuilt, FALSE); + break; + case ROW_READ_DID_SEMI_CONSISTENT: + prebuilt->row_read_type = ROW_READ_TRY_SEMI_CONSISTENT; + break; + } + + DBUG_VOID_RETURN; +} + +/* See handler.h and row0mysql.h for docs on this function. */ +UNIV_INTERN +bool +ha_innobase::was_semi_consistent_read(void) +/*=======================================*/ +{ + return(prebuilt->row_read_type == ROW_READ_DID_SEMI_CONSISTENT); +} + +/* See handler.h and row0mysql.h for docs on this function. */ +UNIV_INTERN +void +ha_innobase::try_semi_consistent_read(bool yes) +/*===========================================*/ +{ + ut_a(prebuilt->trx == thd_to_trx(ha_thd())); + + /* Row read type is set to semi consistent read if this was + requested by the MySQL and either innodb_locks_unsafe_for_binlog + option is used or this session is using READ COMMITTED isolation + level. */ + + if (yes + && (srv_locks_unsafe_for_binlog + || prebuilt->trx->isolation_level == TRX_ISO_READ_COMMITTED)) { + prebuilt->row_read_type = ROW_READ_TRY_SEMI_CONSISTENT; + } else { + prebuilt->row_read_type = ROW_READ_WITH_LOCKS; + } +} + +#ifdef ROW_MERGE_IS_INDEX_USABLE +/********************************************************************** +Check if an index can be used by the optimizer. */ +UNIV_INTERN +bool +ha_innobase::is_index_available( +/*============================*/ + /* out: true if available else false*/ + uint keynr) /* in: index number to check */ +{ + DBUG_ENTER("ha_innobase::is_index_available"); + + if (table && keynr != MAX_KEY && table->s->keys > 0) { + const dict_index_t* index; + const KEY* key = table->key_info + keynr; + + ut_ad(user_thd == ha_thd()); + ut_a(prebuilt->trx == thd_to_trx(user_thd)); + + index = dict_table_get_index_on_name( + prebuilt->table, key->name); + + if (!row_merge_is_index_usable(prebuilt->trx, index)) { + + DBUG_RETURN(false); + } + } + + DBUG_RETURN(true); +} +#endif /* ROW_MERGE_IS_INDEX_USABLE */ + +/********************************************************************** +Initializes a handle to use an index. */ +UNIV_INTERN +int +ha_innobase::index_init( +/*====================*/ + /* out: 0 or error number */ + uint keynr, /* in: key (index) number */ + bool sorted) /* in: 1 if result MUST be sorted according to index */ +{ + DBUG_ENTER("index_init"); + + DBUG_RETURN(change_active_index(keynr)); +} + +/********************************************************************** +Currently does nothing. */ +UNIV_INTERN +int +ha_innobase::index_end(void) +/*========================*/ +{ + int error = 0; + DBUG_ENTER("index_end"); + active_index=MAX_KEY; + DBUG_RETURN(error); +} + +/************************************************************************* +Converts a search mode flag understood by MySQL to a flag understood +by InnoDB. */ +static inline +ulint +convert_search_mode_to_innobase( +/*============================*/ + enum ha_rkey_function find_flag) +{ + switch (find_flag) { + case HA_READ_KEY_EXACT: + /* this does not require the index to be UNIQUE */ + return(PAGE_CUR_GE); + case HA_READ_KEY_OR_NEXT: + return(PAGE_CUR_GE); + case HA_READ_KEY_OR_PREV: + return(PAGE_CUR_LE); + case HA_READ_AFTER_KEY: + return(PAGE_CUR_G); + case HA_READ_BEFORE_KEY: + return(PAGE_CUR_L); + case HA_READ_PREFIX: + return(PAGE_CUR_GE); + case HA_READ_PREFIX_LAST: + return(PAGE_CUR_LE); + case HA_READ_PREFIX_LAST_OR_PREV: + return(PAGE_CUR_LE); + /* In MySQL-4.0 HA_READ_PREFIX and HA_READ_PREFIX_LAST always + pass a complete-field prefix of a key value as the search + tuple. I.e., it is not allowed that the last field would + just contain n first bytes of the full field value. + MySQL uses a 'padding' trick to convert LIKE 'abc%' + type queries so that it can use as a search tuple + a complete-field-prefix of a key value. Thus, the InnoDB + search mode PAGE_CUR_LE_OR_EXTENDS is never used. + TODO: when/if MySQL starts to use also partial-field + prefixes, we have to deal with stripping of spaces + and comparison of non-latin1 char type fields in + innobase_mysql_cmp() to get PAGE_CUR_LE_OR_EXTENDS to + work correctly. */ + case HA_READ_MBR_CONTAIN: + case HA_READ_MBR_INTERSECT: + case HA_READ_MBR_WITHIN: + case HA_READ_MBR_DISJOINT: + case HA_READ_MBR_EQUAL: + my_error(ER_TABLE_CANT_HANDLE_SPKEYS, MYF(0)); + return(PAGE_CUR_UNSUPP); + /* do not use "default:" in order to produce a gcc warning: + enumeration value '...' not handled in switch + (if -Wswitch or -Wall is used) */ + } + + my_error(ER_CHECK_NOT_IMPLEMENTED, MYF(0), "this functionality"); + + return(PAGE_CUR_UNSUPP); +} + +/* + BACKGROUND INFO: HOW A SELECT SQL QUERY IS EXECUTED + --------------------------------------------------- +The following does not cover all the details, but explains how we determine +the start of a new SQL statement, and what is associated with it. + +For each table in the database the MySQL interpreter may have several +table handle instances in use, also in a single SQL query. For each table +handle instance there is an InnoDB 'prebuilt' struct which contains most +of the InnoDB data associated with this table handle instance. + + A) if the user has not explicitly set any MySQL table level locks: + + 1) MySQL calls ::external_lock to set an 'intention' table level lock on +the table of the handle instance. There we set +prebuilt->sql_stat_start = TRUE. The flag sql_stat_start should be set +true if we are taking this table handle instance to use in a new SQL +statement issued by the user. We also increment trx->n_mysql_tables_in_use. + + 2) If prebuilt->sql_stat_start == TRUE we 'pre-compile' the MySQL search +instructions to prebuilt->template of the table handle instance in +::index_read. The template is used to save CPU time in large joins. + + 3) In row_search_for_mysql, if prebuilt->sql_stat_start is true, we +allocate a new consistent read view for the trx if it does not yet have one, +or in the case of a locking read, set an InnoDB 'intention' table level +lock on the table. + + 4) We do the SELECT. MySQL may repeatedly call ::index_read for the +same table handle instance, if it is a join. + + 5) When the SELECT ends, MySQL removes its intention table level locks +in ::external_lock. When trx->n_mysql_tables_in_use drops to zero, + (a) we execute a COMMIT there if the autocommit is on, + (b) we also release possible 'SQL statement level resources' InnoDB may +have for this SQL statement. The MySQL interpreter does NOT execute +autocommit for pure read transactions, though it should. That is why the +table handler in that case has to execute the COMMIT in ::external_lock. + + B) If the user has explicitly set MySQL table level locks, then MySQL +does NOT call ::external_lock at the start of the statement. To determine +when we are at the start of a new SQL statement we at the start of +::index_read also compare the query id to the latest query id where the +table handle instance was used. If it has changed, we know we are at the +start of a new SQL statement. Since the query id can theoretically +overwrap, we use this test only as a secondary way of determining the +start of a new SQL statement. */ + + +/************************************************************************** +Positions an index cursor to the index specified in the handle. Fetches the +row if any. */ +UNIV_INTERN +int +ha_innobase::index_read( +/*====================*/ + /* out: 0, HA_ERR_KEY_NOT_FOUND, + or error number */ + uchar* buf, /* in/out: buffer for the returned + row */ + const uchar* key_ptr, /* in: key value; if this is NULL + we position the cursor at the + start or end of index; this can + also contain an InnoDB row id, in + which case key_len is the InnoDB + row id length; the key value can + also be a prefix of a full key value, + and the last column can be a prefix + of a full column */ + uint key_len,/* in: key value length */ + enum ha_rkey_function find_flag)/* in: search flags from my_base.h */ +{ + ulint mode; + dict_index_t* index; + ulint match_mode = 0; + int error; + ulint ret; + + DBUG_ENTER("index_read"); + + ut_a(prebuilt->trx == thd_to_trx(user_thd)); + + ha_statistic_increment(&SSV::ha_read_key_count); + + index = prebuilt->index; + + /* Note that if the index for which the search template is built is not + necessarily prebuilt->index, but can also be the clustered index */ + + if (prebuilt->sql_stat_start) { + build_template(prebuilt, user_thd, table, ROW_MYSQL_REC_FIELDS); + } + + if (key_ptr) { + /* Convert the search key value to InnoDB format into + prebuilt->search_tuple */ + + row_sel_convert_mysql_key_to_innobase( + prebuilt->search_tuple, + (byte*) key_val_buff, + (ulint)upd_and_key_val_buff_len, + index, + (byte*) key_ptr, + (ulint) key_len, + prebuilt->trx); + } else { + /* We position the cursor to the last or the first entry + in the index */ + + dtuple_set_n_fields(prebuilt->search_tuple, 0); + } + + mode = convert_search_mode_to_innobase(find_flag); + + match_mode = 0; + + if (find_flag == HA_READ_KEY_EXACT) { + + match_mode = ROW_SEL_EXACT; + + } else if (find_flag == HA_READ_PREFIX + || find_flag == HA_READ_PREFIX_LAST) { + + match_mode = ROW_SEL_EXACT_PREFIX; + } + + last_match_mode = (uint) match_mode; + + if (mode != PAGE_CUR_UNSUPP) { + + innodb_srv_conc_enter_innodb(prebuilt->trx); + + ret = row_search_for_mysql((byte*) buf, mode, prebuilt, + match_mode, 0); + + innodb_srv_conc_exit_innodb(prebuilt->trx); + } else { + + ret = DB_UNSUPPORTED; + } + + switch (ret) { + case DB_SUCCESS: + error = 0; + table->status = 0; + break; + case DB_RECORD_NOT_FOUND: + error = HA_ERR_KEY_NOT_FOUND; + table->status = STATUS_NOT_FOUND; + break; + case DB_END_OF_INDEX: + error = HA_ERR_KEY_NOT_FOUND; + table->status = STATUS_NOT_FOUND; + break; + default: + error = convert_error_code_to_mysql((int) ret, + prebuilt->table->flags, + user_thd); + table->status = STATUS_NOT_FOUND; + break; + } + + DBUG_RETURN(error); +} + +/*********************************************************************** +The following functions works like index_read, but it find the last +row with the current key value or prefix. */ +UNIV_INTERN +int +ha_innobase::index_read_last( +/*=========================*/ + /* out: 0, HA_ERR_KEY_NOT_FOUND, or an + error code */ + uchar* buf, /* out: fetched row */ + const uchar* key_ptr,/* in: key value, or a prefix of a full + key value */ + uint key_len)/* in: length of the key val or prefix + in bytes */ +{ + return(index_read(buf, key_ptr, key_len, HA_READ_PREFIX_LAST)); +} + +/************************************************************************ +Get the index for a handle. Does not change active index.*/ +UNIV_INTERN +dict_index_t* +ha_innobase::innobase_get_index( +/*============================*/ + /* out: NULL or index instance. */ + uint keynr) /* in: use this index; MAX_KEY means always + clustered index, even if it was internally + generated by InnoDB */ +{ + KEY* key = 0; + dict_index_t* index = 0; + + DBUG_ENTER("innobase_get_index"); + ha_statistic_increment(&SSV::ha_read_key_count); + + ut_ad(user_thd == ha_thd()); + ut_a(prebuilt->trx == thd_to_trx(user_thd)); + + if (keynr != MAX_KEY && table->s->keys > 0) { + key = table->key_info + keynr; + + index = dict_table_get_index_on_name(prebuilt->table, + key->name); + } else { + index = dict_table_get_first_index(prebuilt->table); + } + + if (!index) { + sql_print_error( + "Innodb could not find key n:o %u with name %s " + "from dict cache for table %s", + keynr, key ? key->name : "NULL", + prebuilt->table->name); + } + + DBUG_RETURN(index); +} + +/************************************************************************ +Changes the active index of a handle. */ +UNIV_INTERN +int +ha_innobase::change_active_index( +/*=============================*/ + /* out: 0 or error code */ + uint keynr) /* in: use this index; MAX_KEY means always clustered + index, even if it was internally generated by + InnoDB */ +{ + DBUG_ENTER("change_active_index"); + + ut_ad(user_thd == ha_thd()); + ut_a(prebuilt->trx == thd_to_trx(user_thd)); + + active_index = keynr; + + prebuilt->index = innobase_get_index(keynr); + + if (UNIV_UNLIKELY(!prebuilt->index)) { + sql_print_warning("InnoDB: change_active_index(%u) failed", + keynr); + DBUG_RETURN(1); + } + + ut_a(prebuilt->search_tuple != 0); + + dtuple_set_n_fields(prebuilt->search_tuple, prebuilt->index->n_fields); + + dict_index_copy_types(prebuilt->search_tuple, prebuilt->index, + prebuilt->index->n_fields); + + /* MySQL changes the active index for a handle also during some + queries, for example SELECT MAX(a), SUM(a) first retrieves the MAX() + and then calculates the sum. Previously we played safe and used + the flag ROW_MYSQL_WHOLE_ROW below, but that caused unnecessary + copying. Starting from MySQL-4.1 we use a more efficient flag here. */ + + build_template(prebuilt, user_thd, table, ROW_MYSQL_REC_FIELDS); + + DBUG_RETURN(0); +} + +/************************************************************************** +Positions an index cursor to the index specified in keynr. Fetches the +row if any. */ +/* ??? This is only used to read whole keys ??? */ +UNIV_INTERN +int +ha_innobase::index_read_idx( +/*========================*/ + /* out: error number or 0 */ + uchar* buf, /* in/out: buffer for the returned + row */ + uint keynr, /* in: use this index */ + const uchar* key, /* in: key value; if this is NULL + we position the cursor at the + start or end of index */ + uint key_len, /* in: key value length */ + enum ha_rkey_function find_flag)/* in: search flags from my_base.h */ +{ + if (change_active_index(keynr)) { + + return(1); + } + + return(index_read(buf, key, key_len, find_flag)); +} + +/*************************************************************************** +Reads the next or previous row from a cursor, which must have previously been +positioned using index_read. */ +UNIV_INTERN +int +ha_innobase::general_fetch( +/*=======================*/ + /* out: 0, HA_ERR_END_OF_FILE, or error + number */ + uchar* buf, /* in/out: buffer for next row in MySQL + format */ + uint direction, /* in: ROW_SEL_NEXT or ROW_SEL_PREV */ + uint match_mode) /* in: 0, ROW_SEL_EXACT, or + ROW_SEL_EXACT_PREFIX */ +{ + ulint ret; + int error = 0; + + DBUG_ENTER("general_fetch"); + + ut_a(prebuilt->trx == thd_to_trx(user_thd)); + + innodb_srv_conc_enter_innodb(prebuilt->trx); + + ret = row_search_for_mysql( + (byte*)buf, 0, prebuilt, match_mode, direction); + + innodb_srv_conc_exit_innodb(prebuilt->trx); + + switch (ret) { + case DB_SUCCESS: + error = 0; + table->status = 0; + break; + case DB_RECORD_NOT_FOUND: + error = HA_ERR_END_OF_FILE; + table->status = STATUS_NOT_FOUND; + break; + case DB_END_OF_INDEX: + error = HA_ERR_END_OF_FILE; + table->status = STATUS_NOT_FOUND; + break; + default: + error = convert_error_code_to_mysql( + (int) ret, prebuilt->table->flags, user_thd); + table->status = STATUS_NOT_FOUND; + break; + } + + DBUG_RETURN(error); +} + +/*************************************************************************** +Reads the next row from a cursor, which must have previously been +positioned using index_read. */ +UNIV_INTERN +int +ha_innobase::index_next( +/*====================*/ + /* out: 0, HA_ERR_END_OF_FILE, or error + number */ + uchar* buf) /* in/out: buffer for next row in MySQL + format */ +{ + ha_statistic_increment(&SSV::ha_read_next_count); + + return(general_fetch(buf, ROW_SEL_NEXT, 0)); +} + +/*********************************************************************** +Reads the next row matching to the key value given as the parameter. */ +UNIV_INTERN +int +ha_innobase::index_next_same( +/*=========================*/ + /* out: 0, HA_ERR_END_OF_FILE, or error + number */ + uchar* buf, /* in/out: buffer for the row */ + const uchar* key, /* in: key value */ + uint keylen) /* in: key value length */ +{ + ha_statistic_increment(&SSV::ha_read_next_count); + + return(general_fetch(buf, ROW_SEL_NEXT, last_match_mode)); +} + +/*************************************************************************** +Reads the previous row from a cursor, which must have previously been +positioned using index_read. */ +UNIV_INTERN +int +ha_innobase::index_prev( +/*====================*/ + /* out: 0, HA_ERR_END_OF_FILE, or error number */ + uchar* buf) /* in/out: buffer for previous row in MySQL format */ +{ + ha_statistic_increment(&SSV::ha_read_prev_count); + + return(general_fetch(buf, ROW_SEL_PREV, 0)); +} + +/************************************************************************ +Positions a cursor on the first record in an index and reads the +corresponding row to buf. */ +UNIV_INTERN +int +ha_innobase::index_first( +/*=====================*/ + /* out: 0, HA_ERR_END_OF_FILE, or error code */ + uchar* buf) /* in/out: buffer for the row */ +{ + int error; + + DBUG_ENTER("index_first"); + ha_statistic_increment(&SSV::ha_read_first_count); + + error = index_read(buf, NULL, 0, HA_READ_AFTER_KEY); + + /* MySQL does not seem to allow this to return HA_ERR_KEY_NOT_FOUND */ + + if (error == HA_ERR_KEY_NOT_FOUND) { + error = HA_ERR_END_OF_FILE; + } + + DBUG_RETURN(error); +} + +/************************************************************************ +Positions a cursor on the last record in an index and reads the +corresponding row to buf. */ +UNIV_INTERN +int +ha_innobase::index_last( +/*====================*/ + /* out: 0, HA_ERR_END_OF_FILE, or error code */ + uchar* buf) /* in/out: buffer for the row */ +{ + int error; + + DBUG_ENTER("index_last"); + ha_statistic_increment(&SSV::ha_read_last_count); + + error = index_read(buf, NULL, 0, HA_READ_BEFORE_KEY); + + /* MySQL does not seem to allow this to return HA_ERR_KEY_NOT_FOUND */ + + if (error == HA_ERR_KEY_NOT_FOUND) { + error = HA_ERR_END_OF_FILE; + } + + DBUG_RETURN(error); +} + +/******************************************************************** +Initialize a table scan. */ +UNIV_INTERN +int +ha_innobase::rnd_init( +/*==================*/ + /* out: 0 or error number */ + bool scan) /* in: TRUE if table/index scan FALSE otherwise */ +{ + int err; + + /* Store the active index value so that we can restore the original + value after a scan */ + + if (prebuilt->clust_index_was_generated) { + err = change_active_index(MAX_KEY); + } else { + err = change_active_index(primary_key); + } + + /* Don't use semi-consistent read in random row reads (by position). + This means we must disable semi_consistent_read if scan is false */ + + if (!scan) { + try_semi_consistent_read(0); + } + + start_of_scan = 1; + + return(err); +} + +/********************************************************************* +Ends a table scan. */ +UNIV_INTERN +int +ha_innobase::rnd_end(void) +/*======================*/ + /* out: 0 or error number */ +{ + return(index_end()); +} + +/********************************************************************* +Reads the next row in a table scan (also used to read the FIRST row +in a table scan). */ +UNIV_INTERN +int +ha_innobase::rnd_next( +/*==================*/ + /* out: 0, HA_ERR_END_OF_FILE, or error number */ + uchar* buf) /* in/out: returns the row in this buffer, + in MySQL format */ +{ + int error; + + DBUG_ENTER("rnd_next"); + ha_statistic_increment(&SSV::ha_read_rnd_next_count); + + if (start_of_scan) { + error = index_first(buf); + + if (error == HA_ERR_KEY_NOT_FOUND) { + error = HA_ERR_END_OF_FILE; + } + + start_of_scan = 0; + } else { + error = general_fetch(buf, ROW_SEL_NEXT, 0); + } + + DBUG_RETURN(error); +} + +/************************************************************************** +Fetches a row from the table based on a row reference. */ +UNIV_INTERN +int +ha_innobase::rnd_pos( +/*=================*/ + /* out: 0, HA_ERR_KEY_NOT_FOUND, or error code */ + uchar* buf, /* in/out: buffer for the row */ + uchar* pos) /* in: primary key value of the row in the + MySQL format, or the row id if the clustered + index was internally generated by InnoDB; the + length of data in pos has to be ref_length */ +{ + int error; + uint keynr = active_index; + DBUG_ENTER("rnd_pos"); + DBUG_DUMP("key", pos, ref_length); + + ha_statistic_increment(&SSV::ha_read_rnd_count); + + ut_a(prebuilt->trx == thd_to_trx(ha_thd())); + + if (prebuilt->clust_index_was_generated) { + /* No primary key was defined for the table and we + generated the clustered index from the row id: the + row reference is the row id, not any key value + that MySQL knows of */ + + error = change_active_index(MAX_KEY); + } else { + error = change_active_index(primary_key); + } + + if (error) { + DBUG_PRINT("error", ("Got error: %d", error)); + DBUG_RETURN(error); + } + + /* Note that we assume the length of the row reference is fixed + for the table, and it is == ref_length */ + + error = index_read(buf, pos, ref_length, HA_READ_KEY_EXACT); + + if (error) { + DBUG_PRINT("error", ("Got error: %d", error)); + } + + change_active_index(keynr); + + DBUG_RETURN(error); +} + +/************************************************************************* +Stores a reference to the current row to 'ref' field of the handle. Note +that in the case where we have generated the clustered index for the +table, the function parameter is illogical: we MUST ASSUME that 'record' +is the current 'position' of the handle, because if row ref is actually +the row id internally generated in InnoDB, then 'record' does not contain +it. We just guess that the row id must be for the record where the handle +was positioned the last time. */ +UNIV_INTERN +void +ha_innobase::position( +/*==================*/ + const uchar* record) /* in: row in MySQL format */ +{ + uint len; + + ut_a(prebuilt->trx == thd_to_trx(ha_thd())); + + if (prebuilt->clust_index_was_generated) { + /* No primary key was defined for the table and we + generated the clustered index from row id: the + row reference will be the row id, not any key value + that MySQL knows of */ + + len = DATA_ROW_ID_LEN; + + memcpy(ref, prebuilt->row_id, len); + } else { + len = store_key_val_for_row(primary_key, (char*)ref, + ref_length, record); + } + + /* We assume that the 'ref' value len is always fixed for the same + table. */ + + if (len != ref_length) { + sql_print_error("Stored ref len is %lu, but table ref len is %lu", + (ulong) len, (ulong) ref_length); + } +} + +/* limit innodb monitor access to users with PROCESS privilege. +See http://bugs.mysql.com/32710 for expl. why we choose PROCESS. */ +#define IS_MAGIC_TABLE_AND_USER_DENIED_ACCESS(table_name, thd) \ + (row_is_magic_monitor_table(table_name) \ + && check_global_access(thd, PROCESS_ACL)) + +/********************************************************************* +Creates a table definition to an InnoDB database. */ +static +int +create_table_def( +/*=============*/ + trx_t* trx, /* in: InnoDB transaction handle */ + TABLE* form, /* in: information on table + columns and indexes */ + const char* table_name, /* in: table name */ + const char* path_of_temp_table,/* in: if this is a table explicitly + created by the user with the + TEMPORARY keyword, then this + parameter is the dir path where the + table should be placed if we create + an .ibd file for it (no .ibd extension + in the path, though); otherwise this + is NULL */ + ulint flags) /* in: table flags */ +{ + Field* field; + dict_table_t* table; + ulint n_cols; + int error; + ulint col_type; + ulint col_len; + ulint nulls_allowed; + ulint unsigned_type; + ulint binary_type; + ulint long_true_varchar; + ulint charset_no; + ulint i; + + DBUG_ENTER("create_table_def"); + DBUG_PRINT("enter", ("table_name: %s", table_name)); + + ut_a(trx->mysql_thd != NULL); + if (IS_MAGIC_TABLE_AND_USER_DENIED_ACCESS(table_name, + (THD*) trx->mysql_thd)) { + DBUG_RETURN(HA_ERR_GENERIC); + } + + n_cols = form->s->fields; + + /* We pass 0 as the space id, and determine at a lower level the space + id where to store the table */ + + table = dict_mem_table_create(table_name, 0, n_cols, flags); + + if (path_of_temp_table) { + table->dir_path_of_temp_table = + mem_heap_strdup(table->heap, path_of_temp_table); + } + + for (i = 0; i < n_cols; i++) { + field = form->field[i]; + + col_type = get_innobase_type_from_mysql_type(&unsigned_type, + field); + if (field->null_ptr) { + nulls_allowed = 0; + } else { + nulls_allowed = DATA_NOT_NULL; + } + + if (field->binary()) { + binary_type = DATA_BINARY_TYPE; + } else { + binary_type = 0; + } + + charset_no = 0; + + if (dtype_is_string_type(col_type)) { + + charset_no = (ulint)field->charset()->number; + + if (UNIV_UNLIKELY(charset_no >= 256)) { + /* in data0type.h we assume that the + number fits in one byte in prtype */ + push_warning_printf( + (THD*) trx->mysql_thd, + MYSQL_ERROR::WARN_LEVEL_ERROR, + ER_CANT_CREATE_TABLE, + "In InnoDB, charset-collation codes" + " must be below 256." + " Unsupported code %lu.", + (ulong) charset_no); + DBUG_RETURN(ER_CANT_CREATE_TABLE); + } + } + + ut_a(field->type() < 256); /* we assume in dtype_form_prtype() + that this fits in one byte */ + col_len = field->pack_length(); + + /* The MySQL pack length contains 1 or 2 bytes length field + for a true VARCHAR. Let us subtract that, so that the InnoDB + column length in the InnoDB data dictionary is the real + maximum byte length of the actual data. */ + + long_true_varchar = 0; + + if (field->type() == MYSQL_TYPE_VARCHAR) { + col_len -= ((Field_varstring*)field)->length_bytes; + + if (((Field_varstring*)field)->length_bytes == 2) { + long_true_varchar = DATA_LONG_TRUE_VARCHAR; + } + } + + dict_mem_table_add_col(table, table->heap, + (char*) field->field_name, + col_type, + dtype_form_prtype( + (ulint)field->type() + | nulls_allowed | unsigned_type + | binary_type | long_true_varchar, + charset_no), + col_len); + } + + error = row_create_table_for_mysql(table, trx); + + error = convert_error_code_to_mysql(error, flags, NULL); + + DBUG_RETURN(error); +} + +/********************************************************************* +Creates an index in an InnoDB database. */ +static +int +create_index( +/*=========*/ + trx_t* trx, /* in: InnoDB transaction handle */ + TABLE* form, /* in: information on table + columns and indexes */ + ulint flags, /* in: InnoDB table flags */ + const char* table_name, /* in: table name */ + uint key_num) /* in: index number */ +{ + Field* field; + dict_index_t* index; + int error; + ulint n_fields; + KEY* key; + KEY_PART_INFO* key_part; + ulint ind_type; + ulint col_type; + ulint prefix_len; + ulint is_unsigned; + ulint i; + ulint j; + ulint* field_lengths; + + DBUG_ENTER("create_index"); + + key = form->key_info + key_num; + + n_fields = key->key_parts; + + ind_type = 0; + + if (key_num == form->s->primary_key) { + ind_type = ind_type | DICT_CLUSTERED; + } + + if (key->flags & HA_NOSAME ) { + ind_type = ind_type | DICT_UNIQUE; + } + + /* We pass 0 as the space id, and determine at a lower level the space + id where to store the table */ + + index = dict_mem_index_create(table_name, key->name, 0, + ind_type, n_fields); + + field_lengths = (ulint*) my_malloc(sizeof(ulint) * n_fields, + MYF(MY_FAE)); + + for (i = 0; i < n_fields; i++) { + key_part = key->key_part + i; + + /* (The flag HA_PART_KEY_SEG denotes in MySQL a column prefix + field in an index: we only store a specified number of first + bytes of the column to the index field.) The flag does not + seem to be properly set by MySQL. Let us fall back on testing + the length of the key part versus the column. */ + + field = NULL; + for (j = 0; j < form->s->fields; j++) { + + field = form->field[j]; + + if (0 == innobase_strcasecmp( + field->field_name, + key_part->field->field_name)) { + /* Found the corresponding column */ + + break; + } + } + + ut_a(j < form->s->fields); + + col_type = get_innobase_type_from_mysql_type( + &is_unsigned, key_part->field); + + if (DATA_BLOB == col_type + || (key_part->length < field->pack_length() + && field->type() != MYSQL_TYPE_VARCHAR) + || (field->type() == MYSQL_TYPE_VARCHAR + && key_part->length < field->pack_length() + - ((Field_varstring*)field)->length_bytes)) { + + prefix_len = key_part->length; + + if (col_type == DATA_INT + || col_type == DATA_FLOAT + || col_type == DATA_DOUBLE + || col_type == DATA_DECIMAL) { + sql_print_error( + "MySQL is trying to create a column " + "prefix index field, on an " + "inappropriate data type. Table " + "name %s, column name %s.", + table_name, + key_part->field->field_name); + + prefix_len = 0; + } + } else { + prefix_len = 0; + } + + field_lengths[i] = key_part->length; + + dict_mem_index_add_field(index, + (char*) key_part->field->field_name, prefix_len); + } + + /* Even though we've defined max_supported_key_part_length, we + still do our own checking using field_lengths to be absolutely + sure we don't create too long indexes. */ + error = row_create_index_for_mysql(index, trx, field_lengths); + + error = convert_error_code_to_mysql(error, flags, NULL); + + my_free(field_lengths, MYF(0)); + + DBUG_RETURN(error); +} + +/********************************************************************* +Creates an index to an InnoDB table when the user has defined no +primary index. */ +static +int +create_clustered_index_when_no_primary( +/*===================================*/ + trx_t* trx, /* in: InnoDB transaction handle */ + ulint flags, /* in: InnoDB table flags */ + const char* table_name) /* in: table name */ +{ + dict_index_t* index; + int error; + + /* We pass 0 as the space id, and determine at a lower level the space + id where to store the table */ + + index = dict_mem_index_create(table_name, "GEN_CLUST_INDEX", + 0, DICT_CLUSTERED, 0); + + error = row_create_index_for_mysql(index, trx, NULL); + + error = convert_error_code_to_mysql(error, flags, NULL); + + return(error); +} + +/********************************************************************* +Validates the create options. We may build on this function +in future. For now, it checks two specifiers: +KEY_BLOCK_SIZE and ROW_FORMAT +If innodb_strict_mode is not set then this function is a no-op */ +static +ibool +create_options_are_valid( +/*=====================*/ + /* out: TRUE if valid. */ + THD* thd, /* in: connection thread. */ + TABLE* form, /* in: information on table + columns and indexes */ + HA_CREATE_INFO* create_info) /* in: create info. */ +{ + ibool kbs_specified = FALSE; + ibool ret = TRUE; + + + ut_ad(thd != NULL); + + /* If innodb_strict_mode is not set don't do any validation. */ + if (!(THDVAR(thd, strict_mode))) { + return(TRUE); + } + + ut_ad(form != NULL); + ut_ad(create_info != NULL); + + /* First check if KEY_BLOCK_SIZE was specified. */ + if (create_info->key_block_size + || (create_info->used_fields & HA_CREATE_USED_KEY_BLOCK_SIZE)) { + + kbs_specified = TRUE; + switch (create_info->key_block_size) { + case 1: + case 2: + case 4: + case 8: + case 16: + /* Valid value. */ + break; + default: + push_warning_printf(thd, MYSQL_ERROR::WARN_LEVEL_ERROR, + ER_ILLEGAL_HA_CREATE_OPTION, + "InnoDB: invalid" + " KEY_BLOCK_SIZE = %lu." + " Valid values are" + " [1, 2, 4, 8, 16]", + create_info->key_block_size); + ret = FALSE; + } + } + + /* If KEY_BLOCK_SIZE was specified, check for its + dependencies. */ + if (kbs_specified && !srv_file_per_table) { + push_warning(thd, MYSQL_ERROR::WARN_LEVEL_ERROR, + ER_ILLEGAL_HA_CREATE_OPTION, + "InnoDB: KEY_BLOCK_SIZE" + " requires innodb_file_per_table."); + ret = FALSE; + } + + if (kbs_specified && srv_file_format < DICT_TF_FORMAT_ZIP) { + push_warning(thd, MYSQL_ERROR::WARN_LEVEL_ERROR, + ER_ILLEGAL_HA_CREATE_OPTION, + "InnoDB: KEY_BLOCK_SIZE" + " requires innodb_file_format >" + " Antelope."); + ret = FALSE; + } + + /* Now check for ROW_FORMAT specifier. */ + if (create_info->used_fields & HA_CREATE_USED_ROW_FORMAT) { + switch (form->s->row_type) { + const char* row_format_name; + case ROW_TYPE_COMPRESSED: + case ROW_TYPE_DYNAMIC: + row_format_name + = form->s->row_type == ROW_TYPE_COMPRESSED + ? "COMPRESSED" + : "DYNAMIC"; + + /* These two ROW_FORMATs require + srv_file_per_table and srv_file_format */ + if (!srv_file_per_table) { + push_warning_printf( + thd, + MYSQL_ERROR::WARN_LEVEL_ERROR, + ER_ILLEGAL_HA_CREATE_OPTION, + "InnoDB: ROW_FORMAT=%s" + " requires innodb_file_per_table.", + row_format_name); + ret = FALSE; + + } + + if (srv_file_format < DICT_TF_FORMAT_ZIP) { + push_warning_printf( + thd, + MYSQL_ERROR::WARN_LEVEL_ERROR, + ER_ILLEGAL_HA_CREATE_OPTION, + "InnoDB: ROW_FORMAT=%s" + " requires innodb_file_format >" + " Antelope.", + row_format_name); + ret = FALSE; + } + + /* Cannot specify KEY_BLOCK_SIZE with + ROW_FORMAT = DYNAMIC. + However, we do allow COMPRESSED to be + specified with KEY_BLOCK_SIZE. */ + if (kbs_specified + && form->s->row_type == ROW_TYPE_DYNAMIC) { + push_warning_printf( + thd, + MYSQL_ERROR::WARN_LEVEL_ERROR, + ER_ILLEGAL_HA_CREATE_OPTION, + "InnoDB: cannot specify" + " ROW_FORMAT = DYNAMIC with" + " KEY_BLOCK_SIZE."); + ret = FALSE; + } + + break; + + case ROW_TYPE_REDUNDANT: + case ROW_TYPE_COMPACT: + case ROW_TYPE_DEFAULT: + /* Default is COMPACT. */ + row_format_name + = form->s->row_type == ROW_TYPE_REDUNDANT + ? "REDUNDANT" + : "COMPACT"; + + /* Cannot specify KEY_BLOCK_SIZE with these + format specifiers. */ + if (kbs_specified) { + push_warning_printf( + thd, + MYSQL_ERROR::WARN_LEVEL_ERROR, + ER_ILLEGAL_HA_CREATE_OPTION, + "InnoDB: cannot specify" + " ROW_FORMAT = %s with" + " KEY_BLOCK_SIZE.", + row_format_name); + ret = FALSE; + } + + break; + + default: + push_warning(thd, + MYSQL_ERROR::WARN_LEVEL_ERROR, + ER_ILLEGAL_HA_CREATE_OPTION, + "InnoDB: invalid ROW_FORMAT specifier."); + ret = FALSE; + + } + } + + return(ret); +} + +/********************************************************************* +Update create_info. Used in SHOW CREATE TABLE et al. */ +UNIV_INTERN +void +ha_innobase::update_create_info( +/*============================*/ + HA_CREATE_INFO* create_info) /* in/out: create info */ +{ + if (!(create_info->used_fields & HA_CREATE_USED_AUTO)) { + ha_innobase::info(HA_STATUS_AUTO); + create_info->auto_increment_value = stats.auto_increment_value; + } +} + +/********************************************************************* +Creates a new table to an InnoDB database. */ +UNIV_INTERN +int +ha_innobase::create( +/*================*/ + /* out: error number */ + const char* name, /* in: table name */ + TABLE* form, /* in: information on table + columns and indexes */ + HA_CREATE_INFO* create_info) /* in: more information of the + created table, contains also the + create statement string */ +{ + int error; + dict_table_t* innobase_table; + trx_t* parent_trx; + trx_t* trx; + int primary_key_no; + uint i; + char name2[FN_REFLEN]; + char norm_name[FN_REFLEN]; + THD* thd = ha_thd(); + ib_int64_t auto_inc_value; + ulint flags; + /* Cache the value of innodb_file_format, in case it is + modified by another thread while the table is being created. */ + const ulint file_format = srv_file_format; + + DBUG_ENTER("ha_innobase::create"); + + DBUG_ASSERT(thd != NULL); + DBUG_ASSERT(create_info != NULL); + +#ifdef __WIN__ + /* Names passed in from server are in two formats: + 1. <database_name>/<table_name>: for normal table creation + 2. full path: for temp table creation, or sym link + + When srv_file_per_table is on, check for full path pattern, i.e. + X:\dir\..., X is a driver letter, or + \\dir1\dir2\..., UNC path + returns error if it is in full path format, but not creating a temp. + table. Currently InnoDB does not support symbolic link on Windows. */ + + if (srv_file_per_table + && (!create_info->options & HA_LEX_CREATE_TMP_TABLE)) { + + if ((name[1] == ':') + || (name[0] == '\\' && name[1] == '\\')) { + sql_print_error("Cannot create table %s\n", name); + DBUG_RETURN(HA_ERR_GENERIC); + } + } +#endif + + if (form->s->fields > 1000) { + /* The limit probably should be REC_MAX_N_FIELDS - 3 = 1020, + but we play safe here */ + + DBUG_RETURN(HA_ERR_TO_BIG_ROW); + } + + /* Get the transaction associated with the current thd, or create one + if not yet created */ + + parent_trx = check_trx_exists(thd); + + /* In case MySQL calls this in the middle of a SELECT query, release + possible adaptive hash latch to avoid deadlocks of threads */ + + trx_search_latch_release_if_reserved(parent_trx); + + trx = innobase_trx_allocate(thd); + + if (lower_case_table_names) { + srv_lower_case_table_names = TRUE; + } else { + srv_lower_case_table_names = FALSE; + } + + strcpy(name2, name); + + normalize_table_name(norm_name, name2); + + /* Latch the InnoDB data dictionary exclusively so that no deadlocks + or lock waits can happen in it during a table create operation. + Drop table etc. do this latching in row0mysql.c. */ + + row_mysql_lock_data_dictionary(trx); + + /* Create the table definition in InnoDB */ + + flags = 0; + + /* Validate create options if innodb_strict_mode is set. */ + if (!create_options_are_valid(thd, form, create_info)) { + error = ER_ILLEGAL_HA_CREATE_OPTION; + goto cleanup; + } + + if (create_info->key_block_size + || (create_info->used_fields & HA_CREATE_USED_KEY_BLOCK_SIZE)) { + /* Determine the page_zip.ssize corresponding to the + requested page size (key_block_size) in kilobytes. */ + + ulint ssize, ksize; + ulint key_block_size = create_info->key_block_size; + + for (ssize = ksize = 1; ssize <= DICT_TF_ZSSIZE_MAX; + ssize++, ksize <<= 1) { + if (key_block_size == ksize) { + flags = ssize << DICT_TF_ZSSIZE_SHIFT + | DICT_TF_COMPACT + | DICT_TF_FORMAT_ZIP + << DICT_TF_FORMAT_SHIFT; + break; + } + } + + if (!srv_file_per_table) { + push_warning(thd, MYSQL_ERROR::WARN_LEVEL_WARN, + ER_ILLEGAL_HA_CREATE_OPTION, + "InnoDB: KEY_BLOCK_SIZE" + " requires innodb_file_per_table."); + flags = 0; + } + + if (file_format < DICT_TF_FORMAT_ZIP) { + push_warning(thd, MYSQL_ERROR::WARN_LEVEL_WARN, + ER_ILLEGAL_HA_CREATE_OPTION, + "InnoDB: KEY_BLOCK_SIZE" + " requires innodb_file_format >" + " Antelope."); + flags = 0; + } + + if (!flags) { + push_warning_printf(thd, MYSQL_ERROR::WARN_LEVEL_WARN, + ER_ILLEGAL_HA_CREATE_OPTION, + "InnoDB: ignoring" + " KEY_BLOCK_SIZE=%lu.", + create_info->key_block_size); + } + } + + if (create_info->used_fields & HA_CREATE_USED_ROW_FORMAT) { + if (flags) { + /* KEY_BLOCK_SIZE was specified. */ + if (form->s->row_type != ROW_TYPE_COMPRESSED) { + /* ROW_FORMAT other than COMPRESSED + ignores KEY_BLOCK_SIZE. It does not + make sense to reject conflicting + KEY_BLOCK_SIZE and ROW_FORMAT, because + such combinations can be obtained + with ALTER TABLE anyway. */ + push_warning_printf( + thd, + MYSQL_ERROR::WARN_LEVEL_WARN, + ER_ILLEGAL_HA_CREATE_OPTION, + "InnoDB: ignoring KEY_BLOCK_SIZE=%lu" + " unless ROW_FORMAT=COMPRESSED.", + create_info->key_block_size); + flags = 0; + } + } else { + /* No KEY_BLOCK_SIZE */ + if (form->s->row_type == ROW_TYPE_COMPRESSED) { + /* ROW_FORMAT=COMPRESSED without + KEY_BLOCK_SIZE implies half the + maximum KEY_BLOCK_SIZE. */ + flags = (DICT_TF_ZSSIZE_MAX - 1) + << DICT_TF_ZSSIZE_SHIFT + | DICT_TF_COMPACT + | DICT_TF_FORMAT_ZIP + << DICT_TF_FORMAT_SHIFT; +#if DICT_TF_ZSSIZE_MAX < 1 +# error "DICT_TF_ZSSIZE_MAX < 1" +#endif + } + } + + switch (form->s->row_type) { + const char* row_format_name; + case ROW_TYPE_REDUNDANT: + break; + case ROW_TYPE_COMPRESSED: + case ROW_TYPE_DYNAMIC: + row_format_name + = form->s->row_type == ROW_TYPE_COMPRESSED + ? "COMPRESSED" + : "DYNAMIC"; + + if (!srv_file_per_table) { + push_warning_printf( + thd, + MYSQL_ERROR::WARN_LEVEL_WARN, + ER_ILLEGAL_HA_CREATE_OPTION, + "InnoDB: ROW_FORMAT=%s" + " requires innodb_file_per_table.", + row_format_name); + } else if (file_format < DICT_TF_FORMAT_ZIP) { + push_warning_printf( + thd, + MYSQL_ERROR::WARN_LEVEL_WARN, + ER_ILLEGAL_HA_CREATE_OPTION, + "InnoDB: ROW_FORMAT=%s" + " requires innodb_file_format >" + " Antelope.", + row_format_name); + } else { + flags |= DICT_TF_COMPACT + | (DICT_TF_FORMAT_ZIP + << DICT_TF_FORMAT_SHIFT); + break; + } + + /* fall through */ + case ROW_TYPE_NOT_USED: + case ROW_TYPE_FIXED: + default: + push_warning(thd, + MYSQL_ERROR::WARN_LEVEL_WARN, + ER_ILLEGAL_HA_CREATE_OPTION, + "InnoDB: assuming ROW_FORMAT=COMPACT."); + case ROW_TYPE_DEFAULT: + case ROW_TYPE_COMPACT: + flags = DICT_TF_COMPACT; + break; + } + } else if (!flags) { + /* No KEY_BLOCK_SIZE or ROW_FORMAT specified: + use ROW_FORMAT=COMPACT by default. */ + flags = DICT_TF_COMPACT; + } + + error = create_table_def(trx, form, norm_name, + create_info->options & HA_LEX_CREATE_TMP_TABLE ? name2 : NULL, + flags); + + if (error) { + goto cleanup; + } + + /* Look for a primary key */ + + primary_key_no= (form->s->primary_key != MAX_KEY ? + (int) form->s->primary_key : + -1); + + /* Our function row_get_mysql_key_number_for_index assumes + the primary key is always number 0, if it exists */ + + DBUG_ASSERT(primary_key_no == -1 || primary_key_no == 0); + + /* Create the keys */ + + if (form->s->keys == 0 || primary_key_no == -1) { + /* Create an index which is used as the clustered index; + order the rows by their row id which is internally generated + by InnoDB */ + + error = create_clustered_index_when_no_primary( + trx, flags, norm_name); + if (error) { + goto cleanup; + } + } + + if (primary_key_no != -1) { + /* In InnoDB the clustered index must always be created + first */ + if ((error = create_index(trx, form, flags, norm_name, + (uint) primary_key_no))) { + goto cleanup; + } + } + + for (i = 0; i < form->s->keys; i++) { + + if (i != (uint) primary_key_no) { + + if ((error = create_index(trx, form, flags, norm_name, + i))) { + goto cleanup; + } + } + } + + if (*trx->mysql_query_str) { + error = row_table_add_foreign_constraints(trx, + *trx->mysql_query_str, norm_name, + create_info->options & HA_LEX_CREATE_TMP_TABLE); + + error = convert_error_code_to_mysql(error, flags, NULL); + + if (error) { + goto cleanup; + } + } + + innobase_commit_low(trx); + + row_mysql_unlock_data_dictionary(trx); + + /* Flush the log to reduce probability that the .frm files and + the InnoDB data dictionary get out-of-sync if the user runs + with innodb_flush_log_at_trx_commit = 0 */ + + log_buffer_flush_to_disk(); + + innobase_table = dict_table_get(norm_name, FALSE); + + DBUG_ASSERT(innobase_table != 0); + + if (innobase_table) { + /* We update the highest file format in the system table + space, if this table has higher file format setting. */ + + trx_sys_file_format_max_upgrade( + (const char**) &innobase_file_format_check, + dict_table_get_format(innobase_table)); + } + + /* Note: We can't call update_thd() as prebuilt will not be + setup at this stage and so we use thd. */ + + /* We need to copy the AUTOINC value from the old table if + this is an ALTER TABLE. */ + + if (((create_info->used_fields & HA_CREATE_USED_AUTO) + || thd_sql_command(thd) == SQLCOM_ALTER_TABLE) + && create_info->auto_increment_value != 0) { + + /* Query was ALTER TABLE...AUTO_INCREMENT = x; or + CREATE TABLE ...AUTO_INCREMENT = x; Find out a table + definition from the dictionary and get the current value + of the auto increment field. Set a new value to the + auto increment field if the value is greater than the + maximum value in the column. */ + + auto_inc_value = create_info->auto_increment_value; + + dict_table_autoinc_lock(innobase_table); + dict_table_autoinc_initialize(innobase_table, auto_inc_value); + dict_table_autoinc_unlock(innobase_table); + } + + /* Tell the InnoDB server that there might be work for + utility threads: */ + + srv_active_wake_master_thread(); + + trx_free_for_mysql(trx); + + DBUG_RETURN(0); + +cleanup: + innobase_commit_low(trx); + + row_mysql_unlock_data_dictionary(trx); + + trx_free_for_mysql(trx); + + DBUG_RETURN(error); +} + +/********************************************************************* +Discards or imports an InnoDB tablespace. */ +UNIV_INTERN +int +ha_innobase::discard_or_import_tablespace( +/*======================================*/ + /* out: 0 == success, -1 == error */ + my_bool discard) /* in: TRUE if discard, else import */ +{ + dict_table_t* dict_table; + trx_t* trx; + int err; + + DBUG_ENTER("ha_innobase::discard_or_import_tablespace"); + + ut_a(prebuilt->trx); + ut_a(prebuilt->trx->magic_n == TRX_MAGIC_N); + ut_a(prebuilt->trx == thd_to_trx(ha_thd())); + + dict_table = prebuilt->table; + trx = prebuilt->trx; + + if (discard) { + err = row_discard_tablespace_for_mysql(dict_table->name, trx); + } else { + err = row_import_tablespace_for_mysql(dict_table->name, trx); + } + + err = convert_error_code_to_mysql(err, dict_table->flags, NULL); + + DBUG_RETURN(err); +} + +/********************************************************************* +Deletes all rows of an InnoDB table. */ +UNIV_INTERN +int +ha_innobase::delete_all_rows(void) +/*==============================*/ + /* out: error number */ +{ + int error; + + DBUG_ENTER("ha_innobase::delete_all_rows"); + + /* Get the transaction associated with the current thd, or create one + if not yet created, and update prebuilt->trx */ + + update_thd(ha_thd()); + + if (thd_sql_command(user_thd) != SQLCOM_TRUNCATE) { + fallback: + /* We only handle TRUNCATE TABLE t as a special case. + DELETE FROM t will have to use ha_innobase::delete_row(), + because DELETE is transactional while TRUNCATE is not. */ + DBUG_RETURN(my_errno=HA_ERR_WRONG_COMMAND); + } + + /* Truncate the table in InnoDB */ + + error = row_truncate_table_for_mysql(prebuilt->table, prebuilt->trx); + if (error == DB_ERROR) { + /* Cannot truncate; resort to ha_innobase::delete_row() */ + goto fallback; + } + + error = convert_error_code_to_mysql(error, prebuilt->table->flags, + NULL); + + DBUG_RETURN(error); +} + +/********************************************************************* +Drops a table from an InnoDB database. Before calling this function, +MySQL calls innobase_commit to commit the transaction of the current user. +Then the current user cannot have locks set on the table. Drop table +operation inside InnoDB will remove all locks any user has on the table +inside InnoDB. */ +UNIV_INTERN +int +ha_innobase::delete_table( +/*======================*/ + /* out: error number */ + const char* name) /* in: table name */ +{ + ulint name_len; + int error; + trx_t* parent_trx; + trx_t* trx; + THD *thd = ha_thd(); + char norm_name[1000]; + + DBUG_ENTER("ha_innobase::delete_table"); + + /* Strangely, MySQL passes the table name without the '.frm' + extension, in contrast to ::create */ + normalize_table_name(norm_name, name); + + if (IS_MAGIC_TABLE_AND_USER_DENIED_ACCESS(norm_name, thd)) { + DBUG_RETURN(HA_ERR_GENERIC); + } + + /* Get the transaction associated with the current thd, or create one + if not yet created */ + + parent_trx = check_trx_exists(thd); + + /* In case MySQL calls this in the middle of a SELECT query, release + possible adaptive hash latch to avoid deadlocks of threads */ + + trx_search_latch_release_if_reserved(parent_trx); + + trx = innobase_trx_allocate(thd); + + if (lower_case_table_names) { + srv_lower_case_table_names = TRUE; + } else { + srv_lower_case_table_names = FALSE; + } + + name_len = strlen(name); + + ut_a(name_len < 1000); + + /* Drop the table in InnoDB */ + + error = row_drop_table_for_mysql(norm_name, trx, + thd_sql_command(thd) + == SQLCOM_DROP_DB); + + /* Flush the log to reduce probability that the .frm files and + the InnoDB data dictionary get out-of-sync if the user runs + with innodb_flush_log_at_trx_commit = 0 */ + + log_buffer_flush_to_disk(); + + /* Tell the InnoDB server that there might be work for + utility threads: */ + + srv_active_wake_master_thread(); + + innobase_commit_low(trx); + + trx_free_for_mysql(trx); + + error = convert_error_code_to_mysql(error, 0, NULL); + + DBUG_RETURN(error); +} + +/********************************************************************* +Removes all tables in the named database inside InnoDB. */ +static +void +innobase_drop_database( +/*===================*/ + /* out: error number */ + handlerton *hton, /* in: handlerton of Innodb */ + char* path) /* in: database path; inside InnoDB the name + of the last directory in the path is used as + the database name: for example, in 'mysql/data/test' + the database name is 'test' */ +{ + ulint len = 0; + trx_t* trx; + char* ptr; + int error; + char* namebuf; + THD* thd = current_thd; + + /* Get the transaction associated with the current thd, or create one + if not yet created */ + + DBUG_ASSERT(hton == innodb_hton_ptr); + + /* In the Windows plugin, thd = current_thd is always NULL */ + if (thd) { + trx_t* parent_trx = check_trx_exists(thd); + + /* In case MySQL calls this in the middle of a SELECT + query, release possible adaptive hash latch to avoid + deadlocks of threads */ + + trx_search_latch_release_if_reserved(parent_trx); + } + + ptr = strend(path) - 2; + + while (ptr >= path && *ptr != '\\' && *ptr != '/') { + ptr--; + len++; + } + + ptr++; + namebuf = (char*) my_malloc((uint) len + 2, MYF(0)); + + memcpy(namebuf, ptr, len); + namebuf[len] = '/'; + namebuf[len + 1] = '\0'; +#ifdef __WIN__ + innobase_casedn_str(namebuf); +#endif +#if defined __WIN__ && !defined MYSQL_SERVER + /* In the Windows plugin, thd = current_thd is always NULL */ + trx = trx_allocate_for_mysql(); + trx->mysql_thd = NULL; + trx->mysql_query_str = NULL; +#else + trx = innobase_trx_allocate(thd); +#endif + error = row_drop_database_for_mysql(namebuf, trx); + my_free(namebuf, MYF(0)); + + /* Flush the log to reduce probability that the .frm files and + the InnoDB data dictionary get out-of-sync if the user runs + with innodb_flush_log_at_trx_commit = 0 */ + + log_buffer_flush_to_disk(); + + /* Tell the InnoDB server that there might be work for + utility threads: */ + + srv_active_wake_master_thread(); + + innobase_commit_low(trx); + trx_free_for_mysql(trx); +} +/************************************************************************* +Renames an InnoDB table. */ +static +int +innobase_rename_table( +/*==================*/ + /* out: 0 or error code */ + trx_t* trx, /* in: transaction */ + const char* from, /* in: old name of the table */ + const char* to, /* in: new name of the table */ + ibool lock_and_commit) + /* in: TRUE=lock data dictionary and commit */ +{ + int error; + char* norm_to; + char* norm_from; + + if (lower_case_table_names) { + srv_lower_case_table_names = TRUE; + } else { + srv_lower_case_table_names = FALSE; + } + + // Magic number 64 arbitrary + norm_to = (char*) my_malloc(strlen(to) + 64, MYF(0)); + norm_from = (char*) my_malloc(strlen(from) + 64, MYF(0)); + + normalize_table_name(norm_to, to); + normalize_table_name(norm_from, from); + + /* Serialize data dictionary operations with dictionary mutex: + no deadlocks can occur then in these operations */ + + if (lock_and_commit) { + row_mysql_lock_data_dictionary(trx); + } + + error = row_rename_table_for_mysql( + norm_from, norm_to, trx, lock_and_commit); + + if (error != DB_SUCCESS) { + FILE* ef = dict_foreign_err_file; + + fputs("InnoDB: Renaming table ", ef); + ut_print_name(ef, trx, TRUE, norm_from); + fputs(" to ", ef); + ut_print_name(ef, trx, TRUE, norm_to); + fputs(" failed!\n", ef); + } + + if (lock_and_commit) { + row_mysql_unlock_data_dictionary(trx); + + /* Flush the log to reduce probability that the .frm + files and the InnoDB data dictionary get out-of-sync + if the user runs with innodb_flush_log_at_trx_commit = 0 */ + + log_buffer_flush_to_disk(); + } + + my_free(norm_to, MYF(0)); + my_free(norm_from, MYF(0)); + + return error; +} +/************************************************************************* +Renames an InnoDB table. */ +UNIV_INTERN +int +ha_innobase::rename_table( +/*======================*/ + /* out: 0 or error code */ + const char* from, /* in: old name of the table */ + const char* to) /* in: new name of the table */ +{ + trx_t* trx; + int error; + trx_t* parent_trx; + THD* thd = ha_thd(); + + DBUG_ENTER("ha_innobase::rename_table"); + + /* Get the transaction associated with the current thd, or create one + if not yet created */ + + parent_trx = check_trx_exists(thd); + + /* In case MySQL calls this in the middle of a SELECT query, release + possible adaptive hash latch to avoid deadlocks of threads */ + + trx_search_latch_release_if_reserved(parent_trx); + + trx = innobase_trx_allocate(thd); + + error = innobase_rename_table(trx, from, to, TRUE); + + /* Tell the InnoDB server that there might be work for + utility threads: */ + + srv_active_wake_master_thread(); + + innobase_commit_low(trx); + trx_free_for_mysql(trx); + + error = convert_error_code_to_mysql(error, 0, NULL); + + DBUG_RETURN(error); +} + +/************************************************************************* +Estimates the number of index records in a range. */ +UNIV_INTERN +ha_rows +ha_innobase::records_in_range( +/*==========================*/ + /* out: estimated number of + rows */ + uint keynr, /* in: index number */ + key_range *min_key, /* in: start key value of the + range, may also be 0 */ + key_range *max_key) /* in: range end key val, may + also be 0 */ +{ + KEY* key; + dict_index_t* index; + uchar* key_val_buff2 = (uchar*) my_malloc( + table->s->reclength + + table->s->max_key_length + 100, + MYF(MY_FAE)); + ulint buff2_len = table->s->reclength + + table->s->max_key_length + 100; + dtuple_t* range_start; + dtuple_t* range_end; + ib_int64_t n_rows; + ulint mode1; + ulint mode2; + mem_heap_t* heap; + + DBUG_ENTER("records_in_range"); + + ut_a(prebuilt->trx == thd_to_trx(ha_thd())); + + prebuilt->trx->op_info = (char*)"estimating records in index range"; + + /* In case MySQL calls this in the middle of a SELECT query, release + possible adaptive hash latch to avoid deadlocks of threads */ + + trx_search_latch_release_if_reserved(prebuilt->trx); + + active_index = keynr; + + key = table->key_info + active_index; + + index = dict_table_get_index_on_name(prebuilt->table, key->name); + + /* MySQL knows about this index and so we must be able to find it.*/ + ut_a(index); + + heap = mem_heap_create(2 * (key->key_parts * sizeof(dfield_t) + + sizeof(dtuple_t))); + + range_start = dtuple_create(heap, key->key_parts); + dict_index_copy_types(range_start, index, key->key_parts); + + range_end = dtuple_create(heap, key->key_parts); + dict_index_copy_types(range_end, index, key->key_parts); + + row_sel_convert_mysql_key_to_innobase( + range_start, (byte*) key_val_buff, + (ulint)upd_and_key_val_buff_len, + index, + (byte*) (min_key ? min_key->key : + (const uchar*) 0), + (ulint) (min_key ? min_key->length : 0), + prebuilt->trx); + + row_sel_convert_mysql_key_to_innobase( + range_end, (byte*) key_val_buff2, + buff2_len, index, + (byte*) (max_key ? max_key->key : + (const uchar*) 0), + (ulint) (max_key ? max_key->length : 0), + prebuilt->trx); + + mode1 = convert_search_mode_to_innobase(min_key ? min_key->flag : + HA_READ_KEY_EXACT); + mode2 = convert_search_mode_to_innobase(max_key ? max_key->flag : + HA_READ_KEY_EXACT); + + if (mode1 != PAGE_CUR_UNSUPP && mode2 != PAGE_CUR_UNSUPP) { + + n_rows = btr_estimate_n_rows_in_range(index, range_start, + mode1, range_end, + mode2); + } else { + + n_rows = 0; + } + + mem_heap_free(heap); + + my_free(key_val_buff2, MYF(0)); + + prebuilt->trx->op_info = (char*)""; + + /* The MySQL optimizer seems to believe an estimate of 0 rows is + always accurate and may return the result 'Empty set' based on that. + The accuracy is not guaranteed, and even if it were, for a locking + read we should anyway perform the search to set the next-key lock. + Add 1 to the value to make sure MySQL does not make the assumption! */ + + if (n_rows == 0) { + n_rows = 1; + } + + DBUG_RETURN((ha_rows) n_rows); +} + +/************************************************************************* +Gives an UPPER BOUND to the number of rows in a table. This is used in +filesort.cc. */ +UNIV_INTERN +ha_rows +ha_innobase::estimate_rows_upper_bound(void) +/*======================================*/ + /* out: upper bound of rows */ +{ + dict_index_t* index; + ulonglong estimate; + ulonglong local_data_file_length; + + DBUG_ENTER("estimate_rows_upper_bound"); + + /* We do not know if MySQL can call this function before calling + external_lock(). To be safe, update the thd of the current table + handle. */ + + update_thd(ha_thd()); + + prebuilt->trx->op_info = (char*) + "calculating upper bound for table rows"; + + /* In case MySQL calls this in the middle of a SELECT query, release + possible adaptive hash latch to avoid deadlocks of threads */ + + trx_search_latch_release_if_reserved(prebuilt->trx); + + index = dict_table_get_first_index(prebuilt->table); + + ut_a(index->stat_n_leaf_pages > 0); + + local_data_file_length = + ((ulonglong) index->stat_n_leaf_pages) * UNIV_PAGE_SIZE; + + + /* Calculate a minimum length for a clustered index record and from + that an upper bound for the number of rows. Since we only calculate + new statistics in row0mysql.c when a table has grown by a threshold + factor, we must add a safety factor 2 in front of the formula below. */ + + estimate = 2 * local_data_file_length / + dict_index_calc_min_rec_len(index); + + prebuilt->trx->op_info = (char*)""; + + DBUG_RETURN((ha_rows) estimate); +} + +/************************************************************************* +How many seeks it will take to read through the table. This is to be +comparable to the number returned by records_in_range so that we can +decide if we should scan the table or use keys. */ +UNIV_INTERN +double +ha_innobase::scan_time() +/*====================*/ + /* out: estimated time measured in disk seeks */ +{ + /* Since MySQL seems to favor table scans too much over index + searches, we pretend that a sequential read takes the same time + as a random disk read, that is, we do not divide the following + by 10, which would be physically realistic. */ + + return((double) (prebuilt->table->stat_clustered_index_size)); +} + +/********************************************************************** +Calculate the time it takes to read a set of ranges through an index +This enables us to optimise reads for clustered indexes. */ +UNIV_INTERN +double +ha_innobase::read_time( +/*===================*/ + /* out: estimated time measured in disk seeks */ + uint index, /* in: key number */ + uint ranges, /* in: how many ranges */ + ha_rows rows) /* in: estimated number of rows in the ranges */ +{ + ha_rows total_rows; + double time_for_scan; + + if (index != table->s->primary_key) { + /* Not clustered */ + return(handler::read_time(index, ranges, rows)); + } + + if (rows <= 2) { + + return((double) rows); + } + + /* Assume that the read time is proportional to the scan time for all + rows + at most one seek per range. */ + + time_for_scan = scan_time(); + + if ((total_rows = estimate_rows_upper_bound()) < rows) { + + return(time_for_scan); + } + + return(ranges + (double) rows / (double) total_rows * time_for_scan); +} + +/************************************************************************* +Returns statistics information of the table to the MySQL interpreter, +in various fields of the handle object. */ +UNIV_INTERN +int +ha_innobase::info( +/*==============*/ + uint flag) /* in: what information MySQL requests */ +{ + dict_table_t* ib_table; + dict_index_t* index; + ha_rows rec_per_key; + ib_int64_t n_rows; + ulong j; + ulong i; + char path[FN_REFLEN]; + os_file_stat_t stat_info; + + DBUG_ENTER("info"); + + /* If we are forcing recovery at a high level, we will suppress + statistics calculation on tables, because that may crash the + server if an index is badly corrupted. */ + + if (srv_force_recovery >= SRV_FORCE_NO_IBUF_MERGE) { + + /* We return success (0) instead of HA_ERR_CRASHED, + because we want MySQL to process this query and not + stop, like it would do if it received the error code + HA_ERR_CRASHED. */ + + DBUG_RETURN(0); + } + + /* We do not know if MySQL can call this function before calling + external_lock(). To be safe, update the thd of the current table + handle. */ + + update_thd(ha_thd()); + + /* In case MySQL calls this in the middle of a SELECT query, release + possible adaptive hash latch to avoid deadlocks of threads */ + + prebuilt->trx->op_info = (char*)"returning various info to MySQL"; + + trx_search_latch_release_if_reserved(prebuilt->trx); + + ib_table = prebuilt->table; + + if (flag & HA_STATUS_TIME) { + if (innobase_stats_on_metadata) { + /* In sql_show we call with this flag: update + then statistics so that they are up-to-date */ + + prebuilt->trx->op_info = "updating table statistics"; + + dict_update_statistics(ib_table); + + prebuilt->trx->op_info = "returning various info to MySQL"; + } + + my_snprintf(path, sizeof(path), "%s/%s%s", + mysql_data_home, ib_table->name, reg_ext); + + unpack_filename(path,path); + + /* Note that we do not know the access time of the table, + nor the CHECK TABLE time, nor the UPDATE or INSERT time. */ + + if (os_file_get_status(path,&stat_info)) { + stats.create_time = stat_info.ctime; + } + } + + if (flag & HA_STATUS_VARIABLE) { + n_rows = ib_table->stat_n_rows; + + /* Because we do not protect stat_n_rows by any mutex in a + delete, it is theoretically possible that the value can be + smaller than zero! TODO: fix this race. + + The MySQL optimizer seems to assume in a left join that n_rows + is an accurate estimate if it is zero. Of course, it is not, + since we do not have any locks on the rows yet at this phase. + Since SHOW TABLE STATUS seems to call this function with the + HA_STATUS_TIME flag set, while the left join optimizer does not + set that flag, we add one to a zero value if the flag is not + set. That way SHOW TABLE STATUS will show the best estimate, + while the optimizer never sees the table empty. */ + + if (n_rows < 0) { + n_rows = 0; + } + + if (n_rows == 0 && !(flag & HA_STATUS_TIME)) { + n_rows++; + } + + /* Fix bug#40386: Not flushing query cache after truncate. + n_rows can not be 0 unless the table is empty, set to 1 + instead. The original problem of bug#29507 is actually + fixed in the server code. */ + if (thd_sql_command(user_thd) == SQLCOM_TRUNCATE) { + + n_rows = 1; + + /* We need to reset the prebuilt value too, otherwise + checks for values greater than the last value written + to the table will fail and the autoinc counter will + not be updated. This will force write_row() into + attempting an update of the table's AUTOINC counter. */ + + prebuilt->autoinc_last_value = 0; + } + + stats.records = (ha_rows)n_rows; + stats.deleted = 0; + stats.data_file_length = ((ulonglong) + ib_table->stat_clustered_index_size) + * UNIV_PAGE_SIZE; + stats.index_file_length = ((ulonglong) + ib_table->stat_sum_of_other_index_sizes) + * UNIV_PAGE_SIZE; + + /* Since fsp_get_available_space_in_free_extents() is + acquiring latches inside InnoDB, we do not call it if we + are asked by MySQL to avoid locking. Another reason to + avoid the call is that it uses quite a lot of CPU. + See Bug#38185. + We do not update delete_length if no locking is requested + so the "old" value can remain. delete_length is initialized + to 0 in the ha_statistics' constructor. */ + if (!(flag & HA_STATUS_NO_LOCK)) { + + /* lock the data dictionary to avoid races with + ibd_file_missing and tablespace_discarded */ + row_mysql_lock_data_dictionary(prebuilt->trx); + + /* ib_table->space must be an existent tablespace */ + if (!ib_table->ibd_file_missing + && !ib_table->tablespace_discarded) { + + stats.delete_length = + fsp_get_available_space_in_free_extents( + ib_table->space) * 1024; + } else { + + THD* thd; + + thd = ha_thd(); + + push_warning_printf( + thd, + MYSQL_ERROR::WARN_LEVEL_WARN, + ER_CANT_GET_STAT, + "InnoDB: Trying to get the free " + "space for table %s but its " + "tablespace has been discarded or " + "the .ibd file is missing. Setting " + "the free space to zero.", + ib_table->name); + + stats.delete_length = 0; + } + + row_mysql_unlock_data_dictionary(prebuilt->trx); + } + + stats.check_time = 0; + + if (stats.records == 0) { + stats.mean_rec_length = 0; + } else { + stats.mean_rec_length = (ulong) (stats.data_file_length / stats.records); + } + } + + if (flag & HA_STATUS_CONST) { + index = dict_table_get_first_index(ib_table); + + if (prebuilt->clust_index_was_generated) { + index = dict_table_get_next_index(index); + } + + for (i = 0; i < table->s->keys; i++) { + if (index == NULL) { + sql_print_error("Table %s contains fewer " + "indexes inside InnoDB than " + "are defined in the MySQL " + ".frm file. Have you mixed up " + ".frm files from different " + "installations? See " +"http://dev.mysql.com/doc/refman/5.1/en/innodb-troubleshooting.html\n", + + ib_table->name); + break; + } + + for (j = 0; j < table->key_info[i].key_parts; j++) { + + if (j + 1 > index->n_uniq) { + sql_print_error( +"Index %s of %s has %lu columns unique inside InnoDB, but MySQL is asking " +"statistics for %lu columns. Have you mixed up .frm files from different " +"installations? " +"See http://dev.mysql.com/doc/refman/5.1/en/innodb-troubleshooting.html\n", + index->name, + ib_table->name, + (unsigned long) + index->n_uniq, j + 1); + break; + } + + if (index->stat_n_diff_key_vals[j + 1] == 0) { + + rec_per_key = stats.records; + } else { + rec_per_key = (ha_rows)(stats.records / + index->stat_n_diff_key_vals[j + 1]); + } + + /* Since MySQL seems to favor table scans + too much over index searches, we pretend + index selectivity is 2 times better than + our estimate: */ + + rec_per_key = rec_per_key / 2; + + if (rec_per_key == 0) { + rec_per_key = 1; + } + + table->key_info[i].rec_per_key[j]= + rec_per_key >= ~(ulong) 0 ? ~(ulong) 0 : + (ulong) rec_per_key; + } + + index = dict_table_get_next_index(index); + } + } + + if (flag & HA_STATUS_ERRKEY) { + const dict_index_t* err_index; + + ut_a(prebuilt->trx); + ut_a(prebuilt->trx->magic_n == TRX_MAGIC_N); + + err_index = trx_get_error_info(prebuilt->trx); + + if (err_index) { + errkey = (unsigned int) + row_get_mysql_key_number_for_index(err_index); + } else { + errkey = (unsigned int) prebuilt->trx->error_key_num; + } + } + + if ((flag & HA_STATUS_AUTO) && table->found_next_number_field) { + stats.auto_increment_value = innobase_peek_autoinc(); + } + + prebuilt->trx->op_info = (char*)""; + + DBUG_RETURN(0); +} + +/************************************************************************** +Updates index cardinalities of the table, based on 8 random dives into +each index tree. This does NOT calculate exact statistics on the table. */ +UNIV_INTERN +int +ha_innobase::analyze( +/*=================*/ + /* out: returns always 0 (success) */ + THD* thd, /* in: connection thread handle */ + HA_CHECK_OPT* check_opt) /* in: currently ignored */ +{ + /* Simply call ::info() with all the flags */ + info(HA_STATUS_TIME | HA_STATUS_CONST | HA_STATUS_VARIABLE); + + return(0); +} + +/************************************************************************** +This is mapped to "ALTER TABLE tablename ENGINE=InnoDB", which rebuilds +the table in MySQL. */ +UNIV_INTERN +int +ha_innobase::optimize( +/*==================*/ + THD* thd, /* in: connection thread handle */ + HA_CHECK_OPT* check_opt) /* in: currently ignored */ +{ + return(HA_ADMIN_TRY_ALTER); +} + +/*********************************************************************** +Tries to check that an InnoDB table is not corrupted. If corruption is +noticed, prints to stderr information about it. In case of corruption +may also assert a failure and crash the server. */ +UNIV_INTERN +int +ha_innobase::check( +/*===============*/ + /* out: HA_ADMIN_CORRUPT or + HA_ADMIN_OK */ + THD* thd, /* in: user thread handle */ + HA_CHECK_OPT* check_opt) /* in: check options, currently + ignored */ +{ + ulint ret; + + DBUG_ASSERT(thd == ha_thd()); + ut_a(prebuilt->trx); + ut_a(prebuilt->trx->magic_n == TRX_MAGIC_N); + ut_a(prebuilt->trx == thd_to_trx(thd)); + + if (prebuilt->mysql_template == NULL) { + /* Build the template; we will use a dummy template + in index scans done in checking */ + + build_template(prebuilt, NULL, table, ROW_MYSQL_WHOLE_ROW); + } + + ret = row_check_table_for_mysql(prebuilt); + + if (ret == DB_SUCCESS) { + return(HA_ADMIN_OK); + } + + return(HA_ADMIN_CORRUPT); +} + +/***************************************************************** +Adds information about free space in the InnoDB tablespace to a table comment +which is printed out when a user calls SHOW TABLE STATUS. Adds also info on +foreign keys. */ +UNIV_INTERN +char* +ha_innobase::update_table_comment( +/*==============================*/ + /* out: table comment + InnoDB free space + + info on foreign keys */ + const char* comment)/* in: table comment defined by user */ +{ + uint length = (uint) strlen(comment); + char* str; + long flen; + + /* We do not know if MySQL can call this function before calling + external_lock(). To be safe, update the thd of the current table + handle. */ + + if (length > 64000 - 3) { + return((char*)comment); /* string too long */ + } + + update_thd(ha_thd()); + + prebuilt->trx->op_info = (char*)"returning table comment"; + + /* In case MySQL calls this in the middle of a SELECT query, release + possible adaptive hash latch to avoid deadlocks of threads */ + + trx_search_latch_release_if_reserved(prebuilt->trx); + str = NULL; + + /* output the data to a temporary file */ + + mutex_enter(&srv_dict_tmpfile_mutex); + rewind(srv_dict_tmpfile); + + fprintf(srv_dict_tmpfile, "InnoDB free: %llu kB", + fsp_get_available_space_in_free_extents( + prebuilt->table->space)); + + dict_print_info_on_foreign_keys(FALSE, srv_dict_tmpfile, + prebuilt->trx, prebuilt->table); + flen = ftell(srv_dict_tmpfile); + if (flen < 0) { + flen = 0; + } else if (length + flen + 3 > 64000) { + flen = 64000 - 3 - length; + } + + /* allocate buffer for the full string, and + read the contents of the temporary file */ + + str = (char*) my_malloc(length + flen + 3, MYF(0)); + + if (str) { + char* pos = str + length; + if (length) { + memcpy(str, comment, length); + *pos++ = ';'; + *pos++ = ' '; + } + rewind(srv_dict_tmpfile); + flen = (uint) fread(pos, 1, flen, srv_dict_tmpfile); + pos[flen] = 0; + } + + mutex_exit(&srv_dict_tmpfile_mutex); + + prebuilt->trx->op_info = (char*)""; + + return(str ? str : (char*) comment); +} + +/*********************************************************************** +Gets the foreign key create info for a table stored in InnoDB. */ +UNIV_INTERN +char* +ha_innobase::get_foreign_key_create_info(void) +/*==========================================*/ + /* out, own: character string in the form which + can be inserted to the CREATE TABLE statement, + MUST be freed with ::free_foreign_key_create_info */ +{ + char* str = 0; + long flen; + + ut_a(prebuilt != NULL); + + /* We do not know if MySQL can call this function before calling + external_lock(). To be safe, update the thd of the current table + handle. */ + + update_thd(ha_thd()); + + prebuilt->trx->op_info = (char*)"getting info on foreign keys"; + + /* In case MySQL calls this in the middle of a SELECT query, + release possible adaptive hash latch to avoid + deadlocks of threads */ + + trx_search_latch_release_if_reserved(prebuilt->trx); + + mutex_enter(&srv_dict_tmpfile_mutex); + rewind(srv_dict_tmpfile); + + /* output the data to a temporary file */ + dict_print_info_on_foreign_keys(TRUE, srv_dict_tmpfile, + prebuilt->trx, prebuilt->table); + prebuilt->trx->op_info = (char*)""; + + flen = ftell(srv_dict_tmpfile); + if (flen < 0) { + flen = 0; + } else if (flen > 64000 - 1) { + flen = 64000 - 1; + } + + /* allocate buffer for the string, and + read the contents of the temporary file */ + + str = (char*) my_malloc(flen + 1, MYF(0)); + + if (str) { + rewind(srv_dict_tmpfile); + flen = (uint) fread(str, 1, flen, srv_dict_tmpfile); + str[flen] = 0; + } + + mutex_exit(&srv_dict_tmpfile_mutex); + + return(str); +} + + +UNIV_INTERN +int +ha_innobase::get_foreign_key_list(THD *thd, List<FOREIGN_KEY_INFO> *f_key_list) +{ + dict_foreign_t* foreign; + + DBUG_ENTER("get_foreign_key_list"); + ut_a(prebuilt != NULL); + update_thd(ha_thd()); + prebuilt->trx->op_info = (char*)"getting list of foreign keys"; + trx_search_latch_release_if_reserved(prebuilt->trx); + mutex_enter(&(dict_sys->mutex)); + foreign = UT_LIST_GET_FIRST(prebuilt->table->foreign_list); + + while (foreign != NULL) { + uint i; + FOREIGN_KEY_INFO f_key_info; + LEX_STRING *name= 0; + uint ulen; + char uname[NAME_LEN+1]; /* Unencoded name */ + char db_name[NAME_LEN+1]; + const char *tmp_buff; + + tmp_buff= foreign->id; + i= 0; + while (tmp_buff[i] != '/') + i++; + tmp_buff+= i + 1; + f_key_info.forein_id = thd_make_lex_string(thd, 0, + tmp_buff, (uint) strlen(tmp_buff), 1); + tmp_buff= foreign->referenced_table_name; + + /* Database name */ + i= 0; + while (tmp_buff[i] != '/') + { + db_name[i]= tmp_buff[i]; + i++; + } + db_name[i]= 0; + ulen= filename_to_tablename(db_name, uname, sizeof(uname)); + f_key_info.referenced_db = thd_make_lex_string(thd, 0, + uname, ulen, 1); + + /* Table name */ + tmp_buff+= i + 1; + ulen= filename_to_tablename(tmp_buff, uname, sizeof(uname)); + f_key_info.referenced_table = thd_make_lex_string(thd, 0, + uname, ulen, 1); + + for (i= 0;;) { + tmp_buff= foreign->foreign_col_names[i]; + name = thd_make_lex_string(thd, name, + tmp_buff, (uint) strlen(tmp_buff), 1); + f_key_info.foreign_fields.push_back(name); + tmp_buff= foreign->referenced_col_names[i]; + name = thd_make_lex_string(thd, name, + tmp_buff, (uint) strlen(tmp_buff), 1); + f_key_info.referenced_fields.push_back(name); + if (++i >= foreign->n_fields) + break; + } + + ulong length; + if (foreign->type & DICT_FOREIGN_ON_DELETE_CASCADE) + { + length=7; + tmp_buff= "CASCADE"; + } + else if (foreign->type & DICT_FOREIGN_ON_DELETE_SET_NULL) + { + length=8; + tmp_buff= "SET NULL"; + } + else if (foreign->type & DICT_FOREIGN_ON_DELETE_NO_ACTION) + { + length=9; + tmp_buff= "NO ACTION"; + } + else + { + length=8; + tmp_buff= "RESTRICT"; + } + f_key_info.delete_method = thd_make_lex_string( + thd, f_key_info.delete_method, tmp_buff, length, 1); + + + if (foreign->type & DICT_FOREIGN_ON_UPDATE_CASCADE) + { + length=7; + tmp_buff= "CASCADE"; + } + else if (foreign->type & DICT_FOREIGN_ON_UPDATE_SET_NULL) + { + length=8; + tmp_buff= "SET NULL"; + } + else if (foreign->type & DICT_FOREIGN_ON_UPDATE_NO_ACTION) + { + length=9; + tmp_buff= "NO ACTION"; + } + else + { + length=8; + tmp_buff= "RESTRICT"; + } + f_key_info.update_method = thd_make_lex_string( + thd, f_key_info.update_method, tmp_buff, length, 1); + if (foreign->referenced_index && + foreign->referenced_index->name) + { + f_key_info.referenced_key_name = thd_make_lex_string( + thd, f_key_info.referenced_key_name, + foreign->referenced_index->name, + strlen(foreign->referenced_index->name), 1); + } + else + f_key_info.referenced_key_name= 0; + + FOREIGN_KEY_INFO *pf_key_info = (FOREIGN_KEY_INFO *) + thd_memdup(thd, &f_key_info, sizeof(FOREIGN_KEY_INFO)); + f_key_list->push_back(pf_key_info); + foreign = UT_LIST_GET_NEXT(foreign_list, foreign); + } + mutex_exit(&(dict_sys->mutex)); + prebuilt->trx->op_info = (char*)""; + + DBUG_RETURN(0); +} + +/********************************************************************* +Checks if ALTER TABLE may change the storage engine of the table. +Changing storage engines is not allowed for tables for which there +are foreign key constraints (parent or child tables). */ +UNIV_INTERN +bool +ha_innobase::can_switch_engines(void) +/*=================================*/ +{ + bool can_switch; + + DBUG_ENTER("ha_innobase::can_switch_engines"); + + ut_a(prebuilt->trx == thd_to_trx(ha_thd())); + + prebuilt->trx->op_info = + "determining if there are foreign key constraints"; + row_mysql_lock_data_dictionary(prebuilt->trx); + + can_switch = !UT_LIST_GET_FIRST(prebuilt->table->referenced_list) + && !UT_LIST_GET_FIRST(prebuilt->table->foreign_list); + + row_mysql_unlock_data_dictionary(prebuilt->trx); + prebuilt->trx->op_info = ""; + + DBUG_RETURN(can_switch); +} + +/*********************************************************************** +Checks if a table is referenced by a foreign key. The MySQL manual states that +a REPLACE is either equivalent to an INSERT, or DELETE(s) + INSERT. Only a +delete is then allowed internally to resolve a duplicate key conflict in +REPLACE, not an update. */ +UNIV_INTERN +uint +ha_innobase::referenced_by_foreign_key(void) +/*========================================*/ + /* out: > 0 if referenced by a FOREIGN KEY */ +{ + if (dict_table_is_referenced_by_foreign_key(prebuilt->table)) { + + return(1); + } + + return(0); +} + +/*********************************************************************** +Frees the foreign key create info for a table stored in InnoDB, if it is +non-NULL. */ +UNIV_INTERN +void +ha_innobase::free_foreign_key_create_info( +/*======================================*/ + char* str) /* in, own: create info string to free */ +{ + if (str) { + my_free(str, MYF(0)); + } +} + +/*********************************************************************** +Tells something additional to the handler about how to do things. */ +UNIV_INTERN +int +ha_innobase::extra( +/*===============*/ + /* out: 0 or error number */ + enum ha_extra_function operation) + /* in: HA_EXTRA_FLUSH or some other flag */ +{ + /* Warning: since it is not sure that MySQL calls external_lock + before calling this function, the trx field in prebuilt can be + obsolete! */ + + switch (operation) { + case HA_EXTRA_FLUSH: + if (prebuilt->blob_heap) { + row_mysql_prebuilt_free_blob_heap(prebuilt); + } + break; + case HA_EXTRA_RESET_STATE: + reset_template(prebuilt); + break; + case HA_EXTRA_NO_KEYREAD: + prebuilt->read_just_key = 0; + break; + case HA_EXTRA_KEYREAD: + prebuilt->read_just_key = 1; + break; + case HA_EXTRA_KEYREAD_PRESERVE_FIELDS: + prebuilt->keep_other_fields_on_keyread = 1; + break; + + /* IMPORTANT: prebuilt->trx can be obsolete in + this method, because it is not sure that MySQL + calls external_lock before this method with the + parameters below. We must not invoke update_thd() + either, because the calling threads may change. + CAREFUL HERE, OR MEMORY CORRUPTION MAY OCCUR! */ + case HA_EXTRA_IGNORE_DUP_KEY: + thd_to_trx(ha_thd())->duplicates |= TRX_DUP_IGNORE; + break; + case HA_EXTRA_WRITE_CAN_REPLACE: + thd_to_trx(ha_thd())->duplicates |= TRX_DUP_REPLACE; + break; + case HA_EXTRA_WRITE_CANNOT_REPLACE: + thd_to_trx(ha_thd())->duplicates &= ~TRX_DUP_REPLACE; + break; + case HA_EXTRA_NO_IGNORE_DUP_KEY: + thd_to_trx(ha_thd())->duplicates &= + ~(TRX_DUP_IGNORE | TRX_DUP_REPLACE); + break; + default:/* Do nothing */ + ; + } + + return(0); +} + +UNIV_INTERN +int +ha_innobase::reset() +{ + if (prebuilt->blob_heap) { + row_mysql_prebuilt_free_blob_heap(prebuilt); + } + + reset_template(prebuilt); + + /* TODO: This should really be reset in reset_template() but for now + it's safer to do it explicitly here. */ + + /* This is a statement level counter. */ + prebuilt->autoinc_last_value = 0; + + return(0); +} + +/********************************************************************** +MySQL calls this function at the start of each SQL statement inside LOCK +TABLES. Inside LOCK TABLES the ::external_lock method does not work to +mark SQL statement borders. Note also a special case: if a temporary table +is created inside LOCK TABLES, MySQL has not called external_lock() at all +on that table. +MySQL-5.0 also calls this before each statement in an execution of a stored +procedure. To make the execution more deterministic for binlogging, MySQL-5.0 +locks all tables involved in a stored procedure with full explicit table +locks (thd_in_lock_tables(thd) holds in store_lock()) before executing the +procedure. */ +UNIV_INTERN +int +ha_innobase::start_stmt( +/*====================*/ + /* out: 0 or error code */ + THD* thd, /* in: handle to the user thread */ + thr_lock_type lock_type) +{ + trx_t* trx; + + update_thd(thd); + + trx = prebuilt->trx; + + /* Here we release the search latch and the InnoDB thread FIFO ticket + if they were reserved. They should have been released already at the + end of the previous statement, but because inside LOCK TABLES the + lock count method does not work to mark the end of a SELECT statement, + that may not be the case. We MUST release the search latch before an + INSERT, for example. */ + + innobase_release_stat_resources(trx); + + /* Reset the AUTOINC statement level counter for multi-row INSERTs. */ + trx->n_autoinc_rows = 0; + + prebuilt->sql_stat_start = TRUE; + prebuilt->hint_need_to_fetch_extra_cols = 0; + reset_template(prebuilt); + + if (!prebuilt->mysql_has_locked) { + /* This handle is for a temporary table created inside + this same LOCK TABLES; since MySQL does NOT call external_lock + in this case, we must use x-row locks inside InnoDB to be + prepared for an update of a row */ + + prebuilt->select_lock_type = LOCK_X; + } else { + if (trx->isolation_level != TRX_ISO_SERIALIZABLE + && thd_sql_command(thd) == SQLCOM_SELECT + && lock_type == TL_READ) { + + /* For other than temporary tables, we obtain + no lock for consistent read (plain SELECT). */ + + prebuilt->select_lock_type = LOCK_NONE; + } else { + /* Not a consistent read: restore the + select_lock_type value. The value of + stored_select_lock_type was decided in: + 1) ::store_lock(), + 2) ::external_lock(), + 3) ::init_table_handle_for_HANDLER(), and + 4) ::transactional_table_lock(). */ + + prebuilt->select_lock_type = + prebuilt->stored_select_lock_type; + } + } + + trx->detailed_error[0] = '\0'; + + /* Set the MySQL flag to mark that there is an active transaction */ + if (trx->active_trans == 0) { + + innobase_register_trx_and_stmt(ht, thd); + trx->active_trans = 1; + } else { + innobase_register_stmt(ht, thd); + } + + return(0); +} + +/********************************************************************** +Maps a MySQL trx isolation level code to the InnoDB isolation level code */ +static inline +ulint +innobase_map_isolation_level( +/*=========================*/ + /* out: InnoDB isolation level */ + enum_tx_isolation iso) /* in: MySQL isolation level code */ +{ + switch(iso) { + case ISO_REPEATABLE_READ: return(TRX_ISO_REPEATABLE_READ); + case ISO_READ_COMMITTED: return(TRX_ISO_READ_COMMITTED); + case ISO_SERIALIZABLE: return(TRX_ISO_SERIALIZABLE); + case ISO_READ_UNCOMMITTED: return(TRX_ISO_READ_UNCOMMITTED); + default: ut_a(0); return(0); + } +} + +/********************************************************************** +As MySQL will execute an external lock for every new table it uses when it +starts to process an SQL statement (an exception is when MySQL calls +start_stmt for the handle) we can use this function to store the pointer to +the THD in the handle. We will also use this function to communicate +to InnoDB that a new SQL statement has started and that we must store a +savepoint to our transaction handle, so that we are able to roll back +the SQL statement in case of an error. */ +UNIV_INTERN +int +ha_innobase::external_lock( +/*=======================*/ + /* out: 0 */ + THD* thd, /* in: handle to the user thread */ + int lock_type) /* in: lock type */ +{ + trx_t* trx; + + DBUG_ENTER("ha_innobase::external_lock"); + DBUG_PRINT("enter",("lock_type: %d", lock_type)); + + update_thd(thd); + + /* Statement based binlogging does not work in isolation level + READ UNCOMMITTED and READ COMMITTED since the necessary + locks cannot be taken. In this case, we print an + informative error message and return with an error. */ + if (lock_type == F_WRLCK) + { + ulong const binlog_format= thd_binlog_format(thd); + ulong const tx_isolation = thd_tx_isolation(ha_thd()); + if (tx_isolation <= ISO_READ_COMMITTED && + binlog_format == BINLOG_FORMAT_STMT) + { + char buf[256]; + my_snprintf(buf, sizeof(buf), + "Transaction level '%s' in" + " InnoDB is not safe for binlog mode '%s'", + tx_isolation_names[tx_isolation], + binlog_format_names[binlog_format]); + my_error(ER_BINLOG_LOGGING_IMPOSSIBLE, MYF(0), buf); + DBUG_RETURN(HA_ERR_LOGGING_IMPOSSIBLE); + } + } + + + trx = prebuilt->trx; + + prebuilt->sql_stat_start = TRUE; + prebuilt->hint_need_to_fetch_extra_cols = 0; + + reset_template(prebuilt); + + if (lock_type == F_WRLCK) { + + /* If this is a SELECT, then it is in UPDATE TABLE ... + or SELECT ... FOR UPDATE */ + prebuilt->select_lock_type = LOCK_X; + prebuilt->stored_select_lock_type = LOCK_X; + } + + if (lock_type != F_UNLCK) { + /* MySQL is setting a new table lock */ + + trx->detailed_error[0] = '\0'; + + /* Set the MySQL flag to mark that there is an active + transaction */ + if (trx->active_trans == 0) { + + innobase_register_trx_and_stmt(ht, thd); + trx->active_trans = 1; + } else if (trx->n_mysql_tables_in_use == 0) { + innobase_register_stmt(ht, thd); + } + + if (trx->isolation_level == TRX_ISO_SERIALIZABLE + && prebuilt->select_lock_type == LOCK_NONE + && thd_test_options(thd, + OPTION_NOT_AUTOCOMMIT | OPTION_BEGIN)) { + + /* To get serializable execution, we let InnoDB + conceptually add 'LOCK IN SHARE MODE' to all SELECTs + which otherwise would have been consistent reads. An + exception is consistent reads in the AUTOCOMMIT=1 mode: + we know that they are read-only transactions, and they + can be serialized also if performed as consistent + reads. */ + + prebuilt->select_lock_type = LOCK_S; + prebuilt->stored_select_lock_type = LOCK_S; + } + + /* Starting from 4.1.9, no InnoDB table lock is taken in LOCK + TABLES if AUTOCOMMIT=1. It does not make much sense to acquire + an InnoDB table lock if it is released immediately at the end + of LOCK TABLES, and InnoDB's table locks in that case cause + VERY easily deadlocks. + + We do not set InnoDB table locks if user has not explicitly + requested a table lock. Note that thd_in_lock_tables(thd) + can hold in some cases, e.g., at the start of a stored + procedure call (SQLCOM_CALL). */ + + if (prebuilt->select_lock_type != LOCK_NONE) { + + if (thd_sql_command(thd) == SQLCOM_LOCK_TABLES + && THDVAR(thd, table_locks) + && thd_test_options(thd, OPTION_NOT_AUTOCOMMIT) + && thd_in_lock_tables(thd)) { + + ulint error = row_lock_table_for_mysql( + prebuilt, NULL, 0); + + if (error != DB_SUCCESS) { + error = convert_error_code_to_mysql( + (int) error, 0, thd); + DBUG_RETURN((int) error); + } + } + + trx->mysql_n_tables_locked++; + } + + trx->n_mysql_tables_in_use++; + prebuilt->mysql_has_locked = TRUE; + + DBUG_RETURN(0); + } + + /* MySQL is releasing a table lock */ + + trx->n_mysql_tables_in_use--; + prebuilt->mysql_has_locked = FALSE; + + /* Release a possible FIFO ticket and search latch. Since we + may reserve the kernel mutex, we have to release the search + system latch first to obey the latching order. */ + + innobase_release_stat_resources(trx); + + /* If the MySQL lock count drops to zero we know that the current SQL + statement has ended */ + + if (trx->n_mysql_tables_in_use == 0) { + + trx->mysql_n_tables_locked = 0; + prebuilt->used_in_HANDLER = FALSE; + + if (!thd_test_options(thd, OPTION_NOT_AUTOCOMMIT | OPTION_BEGIN)) { + if (trx->active_trans != 0) { + innobase_commit(ht, thd, TRUE); + } + } else { + if (trx->isolation_level <= TRX_ISO_READ_COMMITTED + && trx->global_read_view) { + + /* At low transaction isolation levels we let + each consistent read set its own snapshot */ + + read_view_close_for_mysql(trx); + } + } + } + + DBUG_RETURN(0); +} + +/********************************************************************** +With this function MySQL request a transactional lock to a table when +user issued query LOCK TABLES..WHERE ENGINE = InnoDB. */ +UNIV_INTERN +int +ha_innobase::transactional_table_lock( +/*==================================*/ + /* out: error code */ + THD* thd, /* in: handle to the user thread */ + int lock_type) /* in: lock type */ +{ + trx_t* trx; + + DBUG_ENTER("ha_innobase::transactional_table_lock"); + DBUG_PRINT("enter",("lock_type: %d", lock_type)); + + /* We do not know if MySQL can call this function before calling + external_lock(). To be safe, update the thd of the current table + handle. */ + + update_thd(thd); + + if (prebuilt->table->ibd_file_missing && !thd_tablespace_op(thd)) { + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: MySQL is trying to use a table handle" + " but the .ibd file for\n" + "InnoDB: table %s does not exist.\n" + "InnoDB: Have you deleted the .ibd file" + " from the database directory under\n" + "InnoDB: the MySQL datadir?" + "InnoDB: See" + " http://dev.mysql.com/doc/refman/5.1/en/innodb-troubleshooting.html\n" + "InnoDB: how you can resolve the problem.\n", + prebuilt->table->name); + DBUG_RETURN(HA_ERR_CRASHED); + } + + trx = prebuilt->trx; + + prebuilt->sql_stat_start = TRUE; + prebuilt->hint_need_to_fetch_extra_cols = 0; + + reset_template(prebuilt); + + if (lock_type == F_WRLCK) { + prebuilt->select_lock_type = LOCK_X; + prebuilt->stored_select_lock_type = LOCK_X; + } else if (lock_type == F_RDLCK) { + prebuilt->select_lock_type = LOCK_S; + prebuilt->stored_select_lock_type = LOCK_S; + } else { + ut_print_timestamp(stderr); + fprintf(stderr, " InnoDB error:\n" +"MySQL is trying to set transactional table lock with corrupted lock type\n" +"to table %s, lock type %d does not exist.\n", + prebuilt->table->name, lock_type); + DBUG_RETURN(HA_ERR_CRASHED); + } + + /* MySQL is setting a new transactional table lock */ + + /* Set the MySQL flag to mark that there is an active transaction */ + if (trx->active_trans == 0) { + + innobase_register_trx_and_stmt(ht, thd); + trx->active_trans = 1; + } + + if (THDVAR(thd, table_locks) && thd_in_lock_tables(thd)) { + ulint error = DB_SUCCESS; + + error = row_lock_table_for_mysql(prebuilt, NULL, 0); + + if (error != DB_SUCCESS) { + error = convert_error_code_to_mysql( + (int) error, prebuilt->table->flags, thd); + DBUG_RETURN((int) error); + } + + if (thd_test_options(thd, OPTION_NOT_AUTOCOMMIT | OPTION_BEGIN)) { + + /* Store the current undo_no of the transaction + so that we know where to roll back if we have + to roll back the next SQL statement */ + + trx_mark_sql_stat_end(trx); + } + } + + DBUG_RETURN(0); +} + +/**************************************************************************** +Here we export InnoDB status variables to MySQL. */ +static +int +innodb_export_status() +/*==================*/ +{ + if (innodb_inited) { + srv_export_innodb_status(); + } + + return(0); +} + +/**************************************************************************** +Implements the SHOW INNODB STATUS command. Sends the output of the InnoDB +Monitor to the client. */ +static +bool +innodb_show_status( +/*===============*/ + handlerton* hton, /* in: the innodb handlerton */ + THD* thd, /* in: the MySQL query thread of the caller */ + stat_print_fn *stat_print) +{ + trx_t* trx; + static const char truncated_msg[] = "... truncated...\n"; + const long MAX_STATUS_SIZE = 64000; + ulint trx_list_start = ULINT_UNDEFINED; + ulint trx_list_end = ULINT_UNDEFINED; + + DBUG_ENTER("innodb_show_status"); + DBUG_ASSERT(hton == innodb_hton_ptr); + + trx = check_trx_exists(thd); + + innobase_release_stat_resources(trx); + + /* We let the InnoDB Monitor to output at most MAX_STATUS_SIZE + bytes of text. */ + + long flen, usable_len; + char* str; + + mutex_enter(&srv_monitor_file_mutex); + rewind(srv_monitor_file); + srv_printf_innodb_monitor(srv_monitor_file, + &trx_list_start, &trx_list_end); + flen = ftell(srv_monitor_file); + os_file_set_eof(srv_monitor_file); + + if (flen < 0) { + flen = 0; + } + + if (flen > MAX_STATUS_SIZE) { + usable_len = MAX_STATUS_SIZE; + } else { + usable_len = flen; + } + + /* allocate buffer for the string, and + read the contents of the temporary file */ + + if (!(str = (char*) my_malloc(usable_len + 1, MYF(0)))) { + mutex_exit(&srv_monitor_file_mutex); + DBUG_RETURN(TRUE); + } + + rewind(srv_monitor_file); + if (flen < MAX_STATUS_SIZE) { + /* Display the entire output. */ + flen = (long) fread(str, 1, flen, srv_monitor_file); + } else if (trx_list_end < (ulint) flen + && trx_list_start < trx_list_end + && trx_list_start + (flen - trx_list_end) + < MAX_STATUS_SIZE - sizeof truncated_msg - 1) { + /* Omit the beginning of the list of active transactions. */ + long len = (long) fread(str, 1, trx_list_start, srv_monitor_file); + memcpy(str + len, truncated_msg, sizeof truncated_msg - 1); + len += sizeof truncated_msg - 1; + usable_len = (MAX_STATUS_SIZE - 1) - len; + fseek(srv_monitor_file, flen - usable_len, SEEK_SET); + len += (long) fread(str + len, 1, usable_len, srv_monitor_file); + flen = len; + } else { + /* Omit the end of the output. */ + flen = (long) fread(str, 1, MAX_STATUS_SIZE - 1, srv_monitor_file); + } + + mutex_exit(&srv_monitor_file_mutex); + + bool result = FALSE; + + if (stat_print(thd, innobase_hton_name, strlen(innobase_hton_name), + STRING_WITH_LEN(""), str, flen)) { + result= TRUE; + } + my_free(str, MYF(0)); + + DBUG_RETURN(FALSE); +} + +/**************************************************************************** +Implements the SHOW MUTEX STATUS command. . */ +static +bool +innodb_mutex_show_status( +/*=====================*/ + handlerton* hton, /* in: the innodb handlerton */ + THD* thd, /* in: the MySQL query thread of the + caller */ + stat_print_fn* stat_print) +{ + char buf1[IO_SIZE], buf2[IO_SIZE]; + mutex_t* mutex; + rw_lock_t* lock; +#ifdef UNIV_DEBUG + ulint rw_lock_count= 0; + ulint rw_lock_count_spin_loop= 0; + ulint rw_lock_count_spin_rounds= 0; + ulint rw_lock_count_os_wait= 0; + ulint rw_lock_count_os_yield= 0; + ulonglong rw_lock_wait_time= 0; +#endif /* UNIV_DEBUG */ + uint hton_name_len= strlen(innobase_hton_name), buf1len, buf2len; + DBUG_ENTER("innodb_mutex_show_status"); + DBUG_ASSERT(hton == innodb_hton_ptr); + + mutex_enter(&mutex_list_mutex); + + mutex = UT_LIST_GET_FIRST(mutex_list); + + while (mutex != NULL) { +#ifdef UNIV_DEBUG + if (mutex->mutex_type != 1) { + if (mutex->count_using > 0) { + buf1len= my_snprintf(buf1, sizeof(buf1), + "%s:%s", + mutex->cmutex_name, mutex->cfile_name); + buf2len= my_snprintf(buf2, sizeof(buf2), + "count=%lu, spin_waits=%lu," + " spin_rounds=%lu, " + "os_waits=%lu, os_yields=%lu," + " os_wait_times=%lu", + mutex->count_using, + mutex->count_spin_loop, + mutex->count_spin_rounds, + mutex->count_os_wait, + mutex->count_os_yield, + (ulong) (mutex->lspent_time/1000)); + + if (stat_print(thd, innobase_hton_name, + hton_name_len, buf1, buf1len, + buf2, buf2len)) { + mutex_exit(&mutex_list_mutex); + DBUG_RETURN(1); + } + } + } + else { + rw_lock_count += mutex->count_using; + rw_lock_count_spin_loop += mutex->count_spin_loop; + rw_lock_count_spin_rounds += mutex->count_spin_rounds; + rw_lock_count_os_wait += mutex->count_os_wait; + rw_lock_count_os_yield += mutex->count_os_yield; + rw_lock_wait_time += mutex->lspent_time; + } +#else /* UNIV_DEBUG */ + buf1len= my_snprintf(buf1, sizeof(buf1), "%s:%lu", + mutex->cfile_name, (ulong) mutex->cline); + buf2len= my_snprintf(buf2, sizeof(buf2), "os_waits=%lu", + mutex->count_os_wait); + + if (stat_print(thd, innobase_hton_name, + hton_name_len, buf1, buf1len, + buf2, buf2len)) { + mutex_exit(&mutex_list_mutex); + DBUG_RETURN(1); + } +#endif /* UNIV_DEBUG */ + + mutex = UT_LIST_GET_NEXT(list, mutex); + } + + mutex_exit(&mutex_list_mutex); + + mutex_enter(&rw_lock_list_mutex); + + lock = UT_LIST_GET_FIRST(rw_lock_list); + + while (lock != NULL) { + if (lock->count_os_wait) { + buf1len= my_snprintf(buf1, sizeof(buf1), "%s:%lu", + lock->cfile_name, (ulong) lock->cline); + buf2len= my_snprintf(buf2, sizeof(buf2), + "os_waits=%lu", lock->count_os_wait); + + if (stat_print(thd, innobase_hton_name, + hton_name_len, buf1, buf1len, + buf2, buf2len)) { + mutex_exit(&rw_lock_list_mutex); + DBUG_RETURN(1); + } + } + lock = UT_LIST_GET_NEXT(list, lock); + } + + mutex_exit(&rw_lock_list_mutex); + +#ifdef UNIV_DEBUG + buf2len= my_snprintf(buf2, sizeof(buf2), + "count=%lu, spin_waits=%lu, spin_rounds=%lu, " + "os_waits=%lu, os_yields=%lu, os_wait_times=%lu", + rw_lock_count, rw_lock_count_spin_loop, + rw_lock_count_spin_rounds, + rw_lock_count_os_wait, rw_lock_count_os_yield, + (ulong) (rw_lock_wait_time/1000)); + + if (stat_print(thd, innobase_hton_name, hton_name_len, + STRING_WITH_LEN("rw_lock_mutexes"), buf2, buf2len)) { + DBUG_RETURN(1); + } +#endif /* UNIV_DEBUG */ + + DBUG_RETURN(FALSE); +} + +static +bool innobase_show_status(handlerton *hton, THD* thd, + stat_print_fn* stat_print, + enum ha_stat_type stat_type) +{ + DBUG_ASSERT(hton == innodb_hton_ptr); + + switch (stat_type) { + case HA_ENGINE_STATUS: + return innodb_show_status(hton, thd, stat_print); + case HA_ENGINE_MUTEX: + return innodb_mutex_show_status(hton, thd, stat_print); + default: + return(FALSE); + } +} + +/**************************************************************************** + Handling the shared INNOBASE_SHARE structure that is needed to provide table + locking. +****************************************************************************/ + +static INNOBASE_SHARE* get_share(const char* table_name) +{ + INNOBASE_SHARE *share; + pthread_mutex_lock(&innobase_share_mutex); + + ulint fold = ut_fold_string(table_name); + + HASH_SEARCH(table_name_hash, innobase_open_tables, fold, + INNOBASE_SHARE*, share, + ut_ad(share->use_count > 0), + !strcmp(share->table_name, table_name)); + + if (!share) { + + uint length = (uint) strlen(table_name); + + /* TODO: invoke HASH_MIGRATE if innobase_open_tables + grows too big */ + + share = (INNOBASE_SHARE *) my_malloc(sizeof(*share)+length+1, + MYF(MY_FAE | MY_ZEROFILL)); + + share->table_name = (char*) memcpy(share + 1, + table_name, length + 1); + + HASH_INSERT(INNOBASE_SHARE, table_name_hash, + innobase_open_tables, fold, share); + + thr_lock_init(&share->lock); + pthread_mutex_init(&share->mutex,MY_MUTEX_INIT_FAST); + } + + share->use_count++; + pthread_mutex_unlock(&innobase_share_mutex); + + return(share); +} + +static void free_share(INNOBASE_SHARE* share) +{ + pthread_mutex_lock(&innobase_share_mutex); + +#ifdef UNIV_DEBUG + INNOBASE_SHARE* share2; + ulint fold = ut_fold_string(share->table_name); + + HASH_SEARCH(table_name_hash, innobase_open_tables, fold, + INNOBASE_SHARE*, share2, + ut_ad(share->use_count > 0), + !strcmp(share->table_name, share2->table_name)); + + ut_a(share2 == share); +#endif /* UNIV_DEBUG */ + + if (!--share->use_count) { + ulint fold = ut_fold_string(share->table_name); + + HASH_DELETE(INNOBASE_SHARE, table_name_hash, + innobase_open_tables, fold, share); + thr_lock_delete(&share->lock); + pthread_mutex_destroy(&share->mutex); + my_free(share, MYF(0)); + + /* TODO: invoke HASH_MIGRATE if innobase_open_tables + shrinks too much */ + } + + pthread_mutex_unlock(&innobase_share_mutex); +} + +/********************************************************************* +Converts a MySQL table lock stored in the 'lock' field of the handle to +a proper type before storing pointer to the lock into an array of pointers. +MySQL also calls this if it wants to reset some table locks to a not-locked +state during the processing of an SQL query. An example is that during a +SELECT the read lock is released early on the 'const' tables where we only +fetch one row. MySQL does not call this when it releases all locks at the +end of an SQL statement. */ +UNIV_INTERN +THR_LOCK_DATA** +ha_innobase::store_lock( +/*====================*/ + /* out: pointer to the next + element in the 'to' array */ + THD* thd, /* in: user thread handle */ + THR_LOCK_DATA** to, /* in: pointer to an array + of pointers to lock structs; + pointer to the 'lock' field + of current handle is stored + next to this array */ + enum thr_lock_type lock_type) /* in: lock type to store in + 'lock'; this may also be + TL_IGNORE */ +{ + trx_t* trx; + + /* Note that trx in this function is NOT necessarily prebuilt->trx + because we call update_thd() later, in ::external_lock()! Failure to + understand this caused a serious memory corruption bug in 5.1.11. */ + + trx = check_trx_exists(thd); + + /* NOTE: MySQL can call this function with lock 'type' TL_IGNORE! + Be careful to ignore TL_IGNORE if we are going to do something with + only 'real' locks! */ + + /* If no MySQL table is in use, we need to set the isolation level + of the transaction. */ + + if (lock_type != TL_IGNORE + && trx->n_mysql_tables_in_use == 0) { + trx->isolation_level = innobase_map_isolation_level( + (enum_tx_isolation) thd_tx_isolation(thd)); + + if (trx->isolation_level <= TRX_ISO_READ_COMMITTED + && trx->global_read_view) { + + /* At low transaction isolation levels we let + each consistent read set its own snapshot */ + + read_view_close_for_mysql(trx); + } + } + + DBUG_ASSERT(EQ_CURRENT_THD(thd)); + const bool in_lock_tables = thd_in_lock_tables(thd); + const uint sql_command = thd_sql_command(thd); + + if (sql_command == SQLCOM_DROP_TABLE) { + + /* MySQL calls this function in DROP TABLE though this table + handle may belong to another thd that is running a query. Let + us in that case skip any changes to the prebuilt struct. */ + + } else if ((lock_type == TL_READ && in_lock_tables) + || (lock_type == TL_READ_HIGH_PRIORITY && in_lock_tables) + || lock_type == TL_READ_WITH_SHARED_LOCKS + || lock_type == TL_READ_NO_INSERT + || (lock_type != TL_IGNORE + && sql_command != SQLCOM_SELECT)) { + + /* The OR cases above are in this order: + 1) MySQL is doing LOCK TABLES ... READ LOCAL, or we + are processing a stored procedure or function, or + 2) (we do not know when TL_READ_HIGH_PRIORITY is used), or + 3) this is a SELECT ... IN SHARE MODE, or + 4) we are doing a complex SQL statement like + INSERT INTO ... SELECT ... and the logical logging (MySQL + binlog) requires the use of a locking read, or + MySQL is doing LOCK TABLES ... READ. + 5) we let InnoDB do locking reads for all SQL statements that + are not simple SELECTs; note that select_lock_type in this + case may get strengthened in ::external_lock() to LOCK_X. + Note that we MUST use a locking read in all data modifying + SQL statements, because otherwise the execution would not be + serializable, and also the results from the update could be + unexpected if an obsolete consistent read view would be + used. */ + + ulint isolation_level; + + isolation_level = trx->isolation_level; + + if ((srv_locks_unsafe_for_binlog + || isolation_level == TRX_ISO_READ_COMMITTED) + && isolation_level != TRX_ISO_SERIALIZABLE + && (lock_type == TL_READ || lock_type == TL_READ_NO_INSERT) + && (sql_command == SQLCOM_INSERT_SELECT + || sql_command == SQLCOM_UPDATE + || sql_command == SQLCOM_CREATE_TABLE)) { + + /* If we either have innobase_locks_unsafe_for_binlog + option set or this session is using READ COMMITTED + isolation level and isolation level of the transaction + is not set to serializable and MySQL is doing + INSERT INTO...SELECT or UPDATE ... = (SELECT ...) or + CREATE ... SELECT... without FOR UPDATE or + IN SHARE MODE in select, then we use consistent + read for select. */ + + prebuilt->select_lock_type = LOCK_NONE; + prebuilt->stored_select_lock_type = LOCK_NONE; + } else if (sql_command == SQLCOM_CHECKSUM) { + /* Use consistent read for checksum table */ + + prebuilt->select_lock_type = LOCK_NONE; + prebuilt->stored_select_lock_type = LOCK_NONE; + } else { + prebuilt->select_lock_type = LOCK_S; + prebuilt->stored_select_lock_type = LOCK_S; + } + + } else if (lock_type != TL_IGNORE) { + + /* We set possible LOCK_X value in external_lock, not yet + here even if this would be SELECT ... FOR UPDATE */ + + prebuilt->select_lock_type = LOCK_NONE; + prebuilt->stored_select_lock_type = LOCK_NONE; + } + + if (lock_type != TL_IGNORE && lock.type == TL_UNLOCK) { + + /* Starting from 5.0.7, we weaken also the table locks + set at the start of a MySQL stored procedure call, just like + we weaken the locks set at the start of an SQL statement. + MySQL does set in_lock_tables TRUE there, but in reality + we do not need table locks to make the execution of a + single transaction stored procedure call deterministic + (if it does not use a consistent read). */ + + if (lock_type == TL_READ + && sql_command == SQLCOM_LOCK_TABLES) { + /* We come here if MySQL is processing LOCK TABLES + ... READ LOCAL. MyISAM under that table lock type + reads the table as it was at the time the lock was + granted (new inserts are allowed, but not seen by the + reader). To get a similar effect on an InnoDB table, + we must use LOCK TABLES ... READ. We convert the lock + type here, so that for InnoDB, READ LOCAL is + equivalent to READ. This will change the InnoDB + behavior in mysqldump, so that dumps of InnoDB tables + are consistent with dumps of MyISAM tables. */ + + lock_type = TL_READ_NO_INSERT; + } + + /* If we are not doing a LOCK TABLE, DISCARD/IMPORT + TABLESPACE or TRUNCATE TABLE then allow multiple + writers. Note that ALTER TABLE uses a TL_WRITE_ALLOW_READ + < TL_WRITE_CONCURRENT_INSERT. + + We especially allow multiple writers if MySQL is at the + start of a stored procedure call (SQLCOM_CALL) or a + stored function call (MySQL does have in_lock_tables + TRUE there). */ + + if ((lock_type >= TL_WRITE_CONCURRENT_INSERT + && lock_type <= TL_WRITE) + && !(in_lock_tables + && sql_command == SQLCOM_LOCK_TABLES) + && !thd_tablespace_op(thd) + && sql_command != SQLCOM_TRUNCATE + && sql_command != SQLCOM_OPTIMIZE + && sql_command != SQLCOM_CREATE_TABLE) { + + lock_type = TL_WRITE_ALLOW_WRITE; + } + + /* In queries of type INSERT INTO t1 SELECT ... FROM t2 ... + MySQL would use the lock TL_READ_NO_INSERT on t2, and that + would conflict with TL_WRITE_ALLOW_WRITE, blocking all inserts + to t2. Convert the lock to a normal read lock to allow + concurrent inserts to t2. + + We especially allow concurrent inserts if MySQL is at the + start of a stored procedure call (SQLCOM_CALL) + (MySQL does have thd_in_lock_tables() TRUE there). */ + + if (lock_type == TL_READ_NO_INSERT + && sql_command != SQLCOM_LOCK_TABLES) { + + lock_type = TL_READ; + } + + lock.type = lock_type; + } + + *to++= &lock; + + return(to); +} + +/******************************************************************************* +Read the next autoinc value. Acquire the relevant locks before reading +the AUTOINC value. If SUCCESS then the table AUTOINC mutex will be locked +on return and all relevant locks acquired. */ +UNIV_INTERN +ulint +ha_innobase::innobase_get_autoinc( +/*==============================*/ + /* out: DB_SUCCESS or error code */ + ulonglong* value) /* out: autoinc value */ +{ + *value = 0; + + prebuilt->autoinc_error = innobase_lock_autoinc(); + + if (prebuilt->autoinc_error == DB_SUCCESS) { + + /* Determine the first value of the interval */ + *value = dict_table_autoinc_read(prebuilt->table); + + /* It should have been initialized during open. */ + ut_a(*value != 0); + } + + return(prebuilt->autoinc_error); +} + +/*********************************************************************** +This function reads the global auto-inc counter. It doesn't use the +AUTOINC lock even if the lock mode is set to TRADITIONAL. */ +UNIV_INTERN +ulonglong +ha_innobase::innobase_peek_autoinc(void) +/*====================================*/ + /* out: the autoinc value */ +{ + ulonglong auto_inc; + dict_table_t* innodb_table; + + ut_a(prebuilt != NULL); + ut_a(prebuilt->table != NULL); + + innodb_table = prebuilt->table; + + dict_table_autoinc_lock(innodb_table); + + auto_inc = dict_table_autoinc_read(innodb_table); + + ut_a(auto_inc > 0); + + dict_table_autoinc_unlock(innodb_table); + + return(auto_inc); +} + +/******************************************************************************* +This function initializes the auto-inc counter if it has not been +initialized yet. This function does not change the value of the auto-inc +counter if it already has been initialized. Returns the value of the +auto-inc counter in *first_value, and ULONGLONG_MAX in *nb_reserved_values (as +we have a table-level lock). offset, increment, nb_desired_values are ignored. +*first_value is set to -1 if error (deadlock or lock wait timeout) */ +UNIV_INTERN +void +ha_innobase::get_auto_increment( +/*============================*/ + ulonglong offset, /* in: */ + ulonglong increment, /* in: table autoinc increment */ + ulonglong nb_desired_values, /* in: number of values reqd */ + ulonglong *first_value, /* out: the autoinc value */ + ulonglong *nb_reserved_values) /* out: count of reserved values */ +{ + trx_t* trx; + ulint error; + ulonglong autoinc = 0; + + /* Prepare prebuilt->trx in the table handle */ + update_thd(ha_thd()); + + error = innobase_get_autoinc(&autoinc); + + if (error != DB_SUCCESS) { + *first_value = (~(ulonglong) 0); + return; + } + + /* This is a hack, since nb_desired_values seems to be accurate only + for the first call to get_auto_increment() for multi-row INSERT and + meaningless for other statements e.g, LOAD etc. Subsequent calls to + this method for the same statement results in different values which + don't make sense. Therefore we store the value the first time we are + called and count down from that as rows are written (see write_row()). + */ + + trx = prebuilt->trx; + + /* Note: We can't rely on *first_value since some MySQL engines, + in particular the partition engine, don't initialize it to 0 when + invoking this method. So we are not sure if it's guaranteed to + be 0 or not. */ + + /* Called for the first time ? */ + if (trx->n_autoinc_rows == 0) { + + trx->n_autoinc_rows = (ulint) nb_desired_values; + + /* It's possible for nb_desired_values to be 0: + e.g., INSERT INTO T1(C) SELECT C FROM T2; */ + if (nb_desired_values == 0) { + + trx->n_autoinc_rows = 1; + } + + set_if_bigger(*first_value, autoinc); + /* Not in the middle of a mult-row INSERT. */ + } else if (prebuilt->autoinc_last_value == 0) { + set_if_bigger(*first_value, autoinc); + } + + *nb_reserved_values = trx->n_autoinc_rows; + + /* With old style AUTOINC locking we only update the table's + AUTOINC counter after attempting to insert the row. */ + if (innobase_autoinc_lock_mode != AUTOINC_OLD_STYLE_LOCKING) { + ulonglong need; + ulonglong next_value; + ulonglong col_max_value; + + /* We need the upper limit of the col type to check for + whether we update the table autoinc counter or not. */ + col_max_value = innobase_get_int_col_max_value( + table->next_number_field); + + need = *nb_reserved_values * increment; + + /* Compute the last value in the interval */ + next_value = innobase_next_autoinc( + *first_value, need, offset, col_max_value); + + prebuilt->autoinc_last_value = next_value; + + if (prebuilt->autoinc_last_value < *first_value) { + *first_value = (~(ulonglong) 0); + } else { + /* Update the table autoinc variable */ + dict_table_autoinc_update_if_greater( + prebuilt->table, prebuilt->autoinc_last_value); + } + } else { + /* This will force write_row() into attempting an update + of the table's AUTOINC counter. */ + prebuilt->autoinc_last_value = 0; + } + + /* The increment to be used to increase the AUTOINC value, we use + this in write_row() and update_row() to increase the autoinc counter + for columns that are filled by the user. We need the offset and + the increment. */ + prebuilt->autoinc_offset = offset; + prebuilt->autoinc_increment = increment; + + dict_table_autoinc_unlock(prebuilt->table); +} + +/* See comment in handler.h */ +UNIV_INTERN +int +ha_innobase::reset_auto_increment( +/*==============================*/ + ulonglong value) /* in: new value for table autoinc */ +{ + DBUG_ENTER("ha_innobase::reset_auto_increment"); + + int error; + + update_thd(ha_thd()); + + error = row_lock_table_autoinc_for_mysql(prebuilt); + + if (error != DB_SUCCESS) { + error = convert_error_code_to_mysql(error, + prebuilt->table->flags, + user_thd); + + DBUG_RETURN(error); + } + + /* The next value can never be 0. */ + if (value == 0) { + value = 1; + } + + innobase_reset_autoinc(value); + + DBUG_RETURN(0); +} + +/* See comment in handler.cc */ +UNIV_INTERN +bool +ha_innobase::get_error_message(int error, String *buf) +{ + trx_t* trx = check_trx_exists(ha_thd()); + + buf->copy(trx->detailed_error, strlen(trx->detailed_error), + system_charset_info); + + return(FALSE); +} + +/*********************************************************************** +Compares two 'refs'. A 'ref' is the (internal) primary key value of the row. +If there is no explicitly declared non-null unique key or a primary key, then +InnoDB internally uses the row id as the primary key. */ +UNIV_INTERN +int +ha_innobase::cmp_ref( +/*=================*/ + /* out: < 0 if ref1 < ref2, 0 if equal, else + > 0 */ + const uchar* ref1, /* in: an (internal) primary key value in the + MySQL key value format */ + const uchar* ref2) /* in: an (internal) primary key value in the + MySQL key value format */ +{ + enum_field_types mysql_type; + Field* field; + KEY_PART_INFO* key_part; + KEY_PART_INFO* key_part_end; + uint len1; + uint len2; + int result; + + if (prebuilt->clust_index_was_generated) { + /* The 'ref' is an InnoDB row id */ + + return(memcmp(ref1, ref2, DATA_ROW_ID_LEN)); + } + + /* Do a type-aware comparison of primary key fields. PK fields + are always NOT NULL, so no checks for NULL are performed. */ + + key_part = table->key_info[table->s->primary_key].key_part; + + key_part_end = key_part + + table->key_info[table->s->primary_key].key_parts; + + for (; key_part != key_part_end; ++key_part) { + field = key_part->field; + mysql_type = field->type(); + + if (mysql_type == MYSQL_TYPE_TINY_BLOB + || mysql_type == MYSQL_TYPE_MEDIUM_BLOB + || mysql_type == MYSQL_TYPE_BLOB + || mysql_type == MYSQL_TYPE_LONG_BLOB) { + + /* In the MySQL key value format, a column prefix of + a BLOB is preceded by a 2-byte length field */ + + len1 = innobase_read_from_2_little_endian(ref1); + len2 = innobase_read_from_2_little_endian(ref2); + + ref1 += 2; + ref2 += 2; + result = ((Field_blob*)field)->cmp( ref1, len1, + ref2, len2); + } else { + result = field->key_cmp(ref1, ref2); + } + + if (result) { + + return(result); + } + + ref1 += key_part->store_length; + ref2 += key_part->store_length; + } + + return(0); +} + +/*********************************************************************** +Ask InnoDB if a query to a table can be cached. */ +UNIV_INTERN +my_bool +ha_innobase::register_query_cache_table( +/*====================================*/ + /* out: TRUE if query caching + of the table is permitted */ + THD* thd, /* in: user thread handle */ + char* table_key, /* in: concatenation of database name, + the null character '\0', + and the table name */ + uint key_length, /* in: length of the full name, i.e. + len(dbname) + len(tablename) + 1 */ + qc_engine_callback* + call_back, /* out: pointer to function for + checking if query caching + is permitted */ + ulonglong *engine_data) /* in/out: data to call_back */ +{ + *call_back = innobase_query_caching_of_table_permitted; + *engine_data = 0; + return(innobase_query_caching_of_table_permitted(thd, table_key, + key_length, + engine_data)); +} + +UNIV_INTERN +char* +ha_innobase::get_mysql_bin_log_name() +{ + return(trx_sys_mysql_bin_log_name); +} + +UNIV_INTERN +ulonglong +ha_innobase::get_mysql_bin_log_pos() +{ + /* trx... is ib_int64_t, which is a typedef for a 64-bit integer + (__int64 or longlong) so it's ok to cast it to ulonglong. */ + + return(trx_sys_mysql_bin_log_pos); +} + +/********************************************************************** +This function is used to find the storage length in bytes of the first n +characters for prefix indexes using a multibyte character set. The function +finds charset information and returns length of prefix_len characters in the +index field in bytes. + +NOTE: the prototype of this function is copied to data0type.c! If you change +this function, you MUST change also data0type.c! */ +extern "C" UNIV_INTERN +ulint +innobase_get_at_most_n_mbchars( +/*===========================*/ + /* out: number of bytes occupied by the first + n characters */ + ulint charset_id, /* in: character set id */ + ulint prefix_len, /* in: prefix length in bytes of the index + (this has to be divided by mbmaxlen to get the + number of CHARACTERS n in the prefix) */ + ulint data_len, /* in: length of the string in bytes */ + const char* str) /* in: character string */ +{ + ulint char_length; /* character length in bytes */ + ulint n_chars; /* number of characters in prefix */ + CHARSET_INFO* charset; /* charset used in the field */ + + charset = get_charset((uint) charset_id, MYF(MY_WME)); + + ut_ad(charset); + ut_ad(charset->mbmaxlen); + + /* Calculate how many characters at most the prefix index contains */ + + n_chars = prefix_len / charset->mbmaxlen; + + /* If the charset is multi-byte, then we must find the length of the + first at most n chars in the string. If the string contains less + characters than n, then we return the length to the end of the last + character. */ + + if (charset->mbmaxlen > 1) { + /* my_charpos() returns the byte length of the first n_chars + characters, or a value bigger than the length of str, if + there were not enough full characters in str. + + Why does the code below work: + Suppose that we are looking for n UTF-8 characters. + + 1) If the string is long enough, then the prefix contains at + least n complete UTF-8 characters + maybe some extra + characters + an incomplete UTF-8 character. No problem in + this case. The function returns the pointer to the + end of the nth character. + + 2) If the string is not long enough, then the string contains + the complete value of a column, that is, only complete UTF-8 + characters, and we can store in the column prefix index the + whole string. */ + + char_length = my_charpos(charset, str, + str + data_len, (int) n_chars); + if (char_length > data_len) { + char_length = data_len; + } + } else { + if (data_len < prefix_len) { + char_length = data_len; + } else { + char_length = prefix_len; + } + } + + return(char_length); +} + +/*********************************************************************** +This function is used to prepare X/Open XA distributed transaction */ +static +int +innobase_xa_prepare( +/*================*/ + /* out: 0 or error number */ + handlerton *hton, + THD* thd, /* in: handle to the MySQL thread of the user + whose XA transaction should be prepared */ + bool all) /* in: TRUE - commit transaction + FALSE - the current SQL statement ended */ +{ + int error = 0; + trx_t* trx = check_trx_exists(thd); + + DBUG_ASSERT(hton == innodb_hton_ptr); + + if (thd_sql_command(thd) != SQLCOM_XA_PREPARE && + (all || !thd_test_options(thd, OPTION_NOT_AUTOCOMMIT | OPTION_BEGIN))) + { + if (srv_enable_unsafe_group_commit && !THDVAR(thd, support_xa)) { + /* choose group commit rather than binlog order */ + return(0); + } + + /* For ibbackup to work the order of transactions in binlog + and InnoDB must be the same. Consider the situation + + thread1> prepare; write to binlog; ... + <context switch> + thread2> prepare; write to binlog; commit + thread1> ... commit + + To ensure this will not happen we're taking the mutex on + prepare, and releasing it on commit. + + Note: only do it for normal commits, done via ha_commit_trans. + If 2pc protocol is executed by external transaction + coordinator, it will be just a regular MySQL client + executing XA PREPARE and XA COMMIT commands. + In this case we cannot know how many minutes or hours + will be between XA PREPARE and XA COMMIT, and we don't want + to block for undefined period of time. + */ + pthread_mutex_lock(&prepare_commit_mutex); + trx->active_trans = 2; + } + + /* we use support_xa value as it was seen at transaction start + time, not the current session variable value. Any possible changes + to the session variable take effect only in the next transaction */ + if (!trx->support_xa) { + + return(0); + } + + thd_get_xid(thd, (MYSQL_XID*) &trx->xid); + + /* Release a possible FIFO ticket and search latch. Since we will + reserve the kernel mutex, we have to release the search system latch + first to obey the latching order. */ + + innobase_release_stat_resources(trx); + + if (trx->active_trans == 0 && trx->conc_state != TRX_NOT_STARTED) { + + sql_print_error("trx->active_trans == 0, but trx->conc_state != " + "TRX_NOT_STARTED"); + } + + if (all + || (!thd_test_options(thd, OPTION_NOT_AUTOCOMMIT | OPTION_BEGIN))) { + + /* We were instructed to prepare the whole transaction, or + this is an SQL statement end and autocommit is on */ + + ut_ad(trx->active_trans); + + error = (int) trx_prepare_for_mysql(trx); + } else { + /* We just mark the SQL statement ended and do not do a + transaction prepare */ + + /* If we had reserved the auto-inc lock for some + table in this SQL statement we release it now */ + + row_unlock_table_autoinc_for_mysql(trx); + + /* Store the current undo_no of the transaction so that we + know where to roll back if we have to roll back the next + SQL statement */ + + trx_mark_sql_stat_end(trx); + } + + /* Tell the InnoDB server that there might be work for utility + threads: */ + + srv_active_wake_master_thread(); + + return(error); +} + +/*********************************************************************** +This function is used to recover X/Open XA distributed transactions */ +static +int +innobase_xa_recover( +/*================*/ + /* out: number of prepared transactions + stored in xid_list */ + handlerton *hton, + XID* xid_list, /* in/out: prepared transactions */ + uint len) /* in: number of slots in xid_list */ +{ + DBUG_ASSERT(hton == innodb_hton_ptr); + + if (len == 0 || xid_list == NULL) { + + return(0); + } + + return(trx_recover_for_mysql(xid_list, len)); +} + +/*********************************************************************** +This function is used to commit one X/Open XA distributed transaction +which is in the prepared state */ +static +int +innobase_commit_by_xid( +/*===================*/ + /* out: 0 or error number */ + handlerton *hton, + XID* xid) /* in: X/Open XA transaction identification */ +{ + trx_t* trx; + + DBUG_ASSERT(hton == innodb_hton_ptr); + + trx = trx_get_trx_by_xid(xid); + + if (trx) { + innobase_commit_low(trx); + + return(XA_OK); + } else { + return(XAER_NOTA); + } +} + +/*********************************************************************** +This function is used to rollback one X/Open XA distributed transaction +which is in the prepared state */ +static +int +innobase_rollback_by_xid( +/*=====================*/ + /* out: 0 or error number */ + handlerton *hton, + XID *xid) /* in: X/Open XA transaction identification */ +{ + trx_t* trx; + + DBUG_ASSERT(hton == innodb_hton_ptr); + + trx = trx_get_trx_by_xid(xid); + + if (trx) { + return(innobase_rollback_trx(trx)); + } else { + return(XAER_NOTA); + } +} + +/*********************************************************************** +Create a consistent view for a cursor based on current transaction +which is created if the corresponding MySQL thread still lacks one. +This consistent view is then used inside of MySQL when accessing records +using a cursor. */ +static +void* +innobase_create_cursor_view( +/*========================*/ + /* out: pointer to cursor view or NULL */ + handlerton *hton, /* in: innobase hton */ + THD* thd) /* in: user thread handle */ +{ + DBUG_ASSERT(hton == innodb_hton_ptr); + + return(read_cursor_view_create_for_mysql(check_trx_exists(thd))); +} + +/*********************************************************************** +Close the given consistent cursor view of a transaction and restore +global read view to a transaction read view. Transaction is created if the +corresponding MySQL thread still lacks one. */ +static +void +innobase_close_cursor_view( +/*=======================*/ + handlerton *hton, + THD* thd, /* in: user thread handle */ + void* curview)/* in: Consistent read view to be closed */ +{ + DBUG_ASSERT(hton == innodb_hton_ptr); + + read_cursor_view_close_for_mysql(check_trx_exists(thd), + (cursor_view_t*) curview); +} + +/*********************************************************************** +Set the given consistent cursor view to a transaction which is created +if the corresponding MySQL thread still lacks one. If the given +consistent cursor view is NULL global read view of a transaction is +restored to a transaction read view. */ +static +void +innobase_set_cursor_view( +/*=====================*/ + handlerton *hton, + THD* thd, /* in: user thread handle */ + void* curview)/* in: Consistent cursor view to be set */ +{ + DBUG_ASSERT(hton == innodb_hton_ptr); + + read_cursor_set_for_mysql(check_trx_exists(thd), + (cursor_view_t*) curview); +} + + +UNIV_INTERN +bool +ha_innobase::check_if_incompatible_data( + HA_CREATE_INFO* info, + uint table_changes) +{ + if (table_changes != IS_EQUAL_YES) { + + return(COMPATIBLE_DATA_NO); + } + + /* Check that auto_increment value was not changed */ + if ((info->used_fields & HA_CREATE_USED_AUTO) && + info->auto_increment_value != 0) { + + return(COMPATIBLE_DATA_NO); + } + + /* Check that row format didn't change */ + if ((info->used_fields & HA_CREATE_USED_ROW_FORMAT) && + get_row_type() != info->row_type) { + + return(COMPATIBLE_DATA_NO); + } + + /* Specifying KEY_BLOCK_SIZE requests a rebuild of the table. */ + if (info->used_fields & HA_CREATE_USED_KEY_BLOCK_SIZE) { + return(COMPATIBLE_DATA_NO); + } + + return(COMPATIBLE_DATA_YES); +} + +/**************************************************************** +Validate the file format name and return its corresponding id. */ +static +uint +innobase_file_format_name_lookup( +/*=============================*/ + /* out: valid file format id*/ + const char* format_name) /* in: pointer to file format name */ +{ + char* endp; + uint format_id; + + ut_a(format_name != NULL); + + /* The format name can contain the format id itself instead of + the name and we check for that. */ + format_id = (uint) strtoul(format_name, &endp, 10); + + /* Check for valid parse. */ + if (*endp == '\0' && *format_name != '\0') { + + if (format_id <= DICT_TF_FORMAT_MAX) { + + return(format_id); + } + } else { + + for (format_id = 0; format_id <= DICT_TF_FORMAT_MAX; + format_id++) { + const char* name; + + name = trx_sys_file_format_id_to_name(format_id); + + if (!innobase_strcasecmp(format_name, name)) { + + return(format_id); + } + } + } + + return(DICT_TF_FORMAT_MAX + 1); +} + +/**************************************************************** +Validate the file format check value, is it one of "on" or "off", +as a side effect it sets the srv_check_file_format_at_startup variable. */ +static +bool +innobase_file_format_check_on_off( +/*==============================*/ + /* out: true if config value one + of "on" or "off" */ + const char* format_check) /* in: parameter value */ +{ + bool ret = true; + + if (!innobase_strcasecmp(format_check, "off")) { + + /* Set the value to disable checking. */ + srv_check_file_format_at_startup = DICT_TF_FORMAT_MAX + 1; + + } else if (!innobase_strcasecmp(format_check, "on")) { + + /* Set the value to the lowest supported format. */ + srv_check_file_format_at_startup = DICT_TF_FORMAT_51; + } else { + ret = FALSE; + } + + return(ret); +} + +/**************************************************************** +Validate the file format check config parameters, as a side effect it +sets the srv_check_file_format_at_startup variable. */ +static +bool +innobase_file_format_check_validate( +/*================================*/ + /* out: true if valid config value */ + const char* format_check) /* in: parameter value */ +{ + uint format_id; + bool ret = true; + + format_id = innobase_file_format_name_lookup(format_check); + + if (format_id < DICT_TF_FORMAT_MAX + 1) { + srv_check_file_format_at_startup = format_id; + } else { + ret = false; + } + + return(ret); +} + +/***************************************************************** +Check if it is a valid file format. This function is registered as +a callback with MySQL. */ +static +int +innodb_file_format_name_validate( +/*=============================*/ + /* out: 0 for valid file + format */ + THD* thd, /* in: thread handle */ + struct st_mysql_sys_var* var, /* in: pointer to system + variable */ + void* save, /* out: immediate result + for update function */ + struct st_mysql_value* value) /* in: incoming string */ +{ + const char* file_format_input; + char buff[STRING_BUFFER_USUAL_SIZE]; + int len = sizeof(buff); + + ut_a(save != NULL); + ut_a(value != NULL); + + file_format_input = value->val_str(value, buff, &len); + + if (file_format_input != NULL) { + uint format_id; + + format_id = innobase_file_format_name_lookup( + file_format_input); + + if (format_id <= DICT_TF_FORMAT_MAX) { + + *(uint*) save = format_id; + return(0); + } + } + + return(1); +} + +/******************************************************************** +Update the system variable innodb_file_format using the "saved" +value. This function is registered as a callback with MySQL. */ +static +void +innodb_file_format_name_update( +/*===========================*/ + THD* thd, /* in: thread handle */ + struct st_mysql_sys_var* var, /* in: pointer to + system variable */ + void* var_ptr, /* out: where the + formal string goes */ + const void* save) /* in: immediate result + from check function */ +{ + ut_a(var_ptr != NULL); + ut_a(save != NULL); + ut_a((*(const uint*) save) <= DICT_TF_FORMAT_MAX); + + srv_file_format = *(const uint*) save; + + *(const char**) var_ptr + = trx_sys_file_format_id_to_name(srv_file_format); +} + +/***************************************************************** +Check if valid argument to innodb_file_format_check. This +function is registered as a callback with MySQL. */ +static +int +innodb_file_format_check_validate( +/*==============================*/ + /* out: 0 for valid file + format */ + THD* thd, /* in: thread handle */ + struct st_mysql_sys_var* var, /* in: pointer to system + variable */ + void* save, /* out: immediate result + for update function */ + struct st_mysql_value* value) /* in: incoming string */ +{ + const char* file_format_input; + char buff[STRING_BUFFER_USUAL_SIZE]; + int len = sizeof(buff); + + ut_a(save != NULL); + ut_a(value != NULL); + + file_format_input = value->val_str(value, buff, &len); + + if (file_format_input != NULL) { + + /* Check if user set on/off, we want to print a suitable + message if they did so. */ + + if (innobase_file_format_check_on_off(file_format_input)) { + sql_print_warning( + "InnoDB: invalid innodb_file_format_check " + "value; on/off can only be set at startup or " + "in the configuration file"); + } else if (innobase_file_format_check_validate( + file_format_input)) { + + uint format_id; + + format_id = innobase_file_format_name_lookup( + file_format_input); + + ut_a(format_id <= DICT_TF_FORMAT_MAX); + + *(uint*) save = format_id; + + return(0); + + } else { + sql_print_warning( + "InnoDB: invalid innodb_file_format_check " + "value; can be any format up to %s " + "or its equivalent numeric id", + trx_sys_file_format_id_to_name( + DICT_TF_FORMAT_MAX)); + } + } + + return(1); +} + +/******************************************************************** +Update the system variable innodb_file_format_check using the "saved" +value. This function is registered as a callback with MySQL. */ +static +void +innodb_file_format_check_update( +/*============================*/ + THD* thd, /* in: thread handle */ + struct st_mysql_sys_var* var, /* in: pointer to + system variable */ + void* var_ptr, /* out: where the + formal string goes */ + const void* save) /* in: immediate result + from check function */ +{ + uint format_id; + + ut_a(save != NULL); + ut_a(var_ptr != NULL); + + format_id = *(const uint*) save; + + /* Update the max format id in the system tablespace. */ + if (trx_sys_file_format_max_set(format_id, (const char**) var_ptr)) { + ut_print_timestamp(stderr); + fprintf(stderr, + " [Info] InnoDB: the file format in the system " + "tablespace is now set to %s.\n", *(char**) var_ptr); + } +} + +/******************************************************************** +Update the system variable innodb_adaptive_hash_index using the "saved" +value. This function is registered as a callback with MySQL. */ +static +void +innodb_adaptive_hash_index_update( +/*==============================*/ + THD* thd, /* in: thread handle */ + struct st_mysql_sys_var* var, /* in: pointer to + system variable */ + void* var_ptr, /* out: where the + formal string goes */ + const void* save) /* in: immediate result + from check function */ +{ + if (*(my_bool*) save) { + btr_search_enable(); + } else { + btr_search_disable(); + } +} + +/***************************************************************** +Check if it is a valid value of innodb_change_buffering. This function is +registered as a callback with MySQL. */ +static +int +innodb_change_buffering_validate( +/*=============================*/ + /* out: 0 for valid + innodb_change_buffering */ + THD* thd, /* in: thread handle */ + struct st_mysql_sys_var* var, /* in: pointer to system + variable */ + void* save, /* out: immediate result + for update function */ + struct st_mysql_value* value) /* in: incoming string */ +{ + const char* change_buffering_input; + char buff[STRING_BUFFER_USUAL_SIZE]; + int len = sizeof(buff); + + ut_a(save != NULL); + ut_a(value != NULL); + + change_buffering_input = value->val_str(value, buff, &len); + + if (change_buffering_input != NULL) { + ulint use; + + for (use = 0; use < UT_ARR_SIZE(innobase_change_buffering_values); + use++) { + if (!innobase_strcasecmp( + change_buffering_input, + innobase_change_buffering_values[use])) { + *(ibuf_use_t*) save = (ibuf_use_t) use; + return(0); + } + } + } + + return(1); +} + +/******************************************************************** +Update the system variable innodb_change_buffering using the "saved" +value. This function is registered as a callback with MySQL. */ +static +void +innodb_change_buffering_update( +/*===========================*/ + THD* thd, /* in: thread handle */ + struct st_mysql_sys_var* var, /* in: pointer to + system variable */ + void* var_ptr, /* out: where the + formal string goes */ + const void* save) /* in: immediate result + from check function */ +{ + ut_a(var_ptr != NULL); + ut_a(save != NULL); + ut_a((*(ibuf_use_t*) save) < IBUF_USE_COUNT); + + ibuf_use = *(const ibuf_use_t*) save; + + *(const char**) var_ptr = innobase_change_buffering_values[ibuf_use]; +} + +static int show_innodb_vars(THD *thd, SHOW_VAR *var, char *buff) +{ + innodb_export_status(); + var->type= SHOW_ARRAY; + var->value= (char *) &innodb_status_variables; + return 0; +} + +static SHOW_VAR innodb_status_variables_export[]= { + {"Innodb", (char*) &show_innodb_vars, SHOW_FUNC}, + {NullS, NullS, SHOW_LONG} +}; + +static struct st_mysql_storage_engine innobase_storage_engine= +{ MYSQL_HANDLERTON_INTERFACE_VERSION }; + +/* plugin options */ +static MYSQL_SYSVAR_BOOL(checksums, innobase_use_checksums, + PLUGIN_VAR_NOCMDARG | PLUGIN_VAR_READONLY, + "Enable InnoDB checksums validation (enabled by default). " + "Disable with --skip-innodb-checksums.", + NULL, NULL, TRUE); + +static MYSQL_SYSVAR_STR(data_home_dir, innobase_data_home_dir, + PLUGIN_VAR_READONLY, + "The common part for InnoDB table spaces.", + NULL, NULL, NULL); + +static MYSQL_SYSVAR_BOOL(extra_undoslots, innobase_extra_undoslots, + PLUGIN_VAR_NOCMDARG | PLUGIN_VAR_READONLY, + "Enable to use about 4000 undo slots instead of default 1024. " + "#### Attention: Once you enable this parameter, " + "don't use the datafile for normal mysqld or ibbackup! ####", + NULL, NULL, FALSE); + +static MYSQL_SYSVAR_BOOL(overwrite_relay_log_info, innobase_overwrite_relay_log_info, + PLUGIN_VAR_NOCMDARG | PLUGIN_VAR_READONLY, + "During InnoDB crash recovery on slave overwrite relay-log.info " + "to align master log file position if information in InnoDB and relay-log.info is different.", + NULL, NULL, FALSE); + +static MYSQL_SYSVAR_BOOL(doublewrite, innobase_use_doublewrite, + PLUGIN_VAR_NOCMDARG | PLUGIN_VAR_READONLY, + "Enable InnoDB doublewrite buffer (enabled by default). " + "Disable with --skip-innodb-doublewrite.", + NULL, NULL, TRUE); + +static MYSQL_SYSVAR_ULONG(fast_shutdown, innobase_fast_shutdown, + PLUGIN_VAR_OPCMDARG, + "Speeds up the shutdown process of the InnoDB storage engine. Possible " + "values are 0, 1 (faster)" + /* + NetWare can't close unclosed files, can't automatically kill remaining + threads, etc, so on this OS we disable the crash-like InnoDB shutdown. + */ + IF_NETWARE("", " or 2 (fastest - crash-like)") + ".", + NULL, NULL, 1, 0, IF_NETWARE(1,2), 0); + +static MYSQL_SYSVAR_BOOL(file_per_table, srv_file_per_table, + PLUGIN_VAR_NOCMDARG, + "Stores each InnoDB table to an .ibd file in the database dir.", + NULL, NULL, FALSE); + +static MYSQL_SYSVAR_STR(file_format, innobase_file_format_name, + PLUGIN_VAR_RQCMDARG, + "File format to use for new tables in .ibd files.", + innodb_file_format_name_validate, + innodb_file_format_name_update, "Antelope"); + +static MYSQL_SYSVAR_STR(file_format_check, innobase_file_format_check, + PLUGIN_VAR_OPCMDARG, + "The highest file format in the tablespace.", + innodb_file_format_check_validate, + innodb_file_format_check_update, + "on"); + +static MYSQL_SYSVAR_ULONG(flush_log_at_trx_commit, srv_flush_log_at_trx_commit, + PLUGIN_VAR_OPCMDARG, + "Set to 0 (write and flush once per second)," + " 1 (write and flush at each commit)" + " or 2 (write at commit, flush once per second).", + NULL, NULL, 1, 0, 2, 0); + +static MYSQL_SYSVAR_STR(flush_method, innobase_unix_file_flush_method, + PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY, + "With which method to flush data.", NULL, NULL, NULL); + +static MYSQL_SYSVAR_BOOL(locks_unsafe_for_binlog, innobase_locks_unsafe_for_binlog, + PLUGIN_VAR_NOCMDARG | PLUGIN_VAR_READONLY, + "Force InnoDB to not use next-key locking, to use only row-level locking.", + NULL, NULL, FALSE); + +static MYSQL_SYSVAR_ULONG(show_verbose_locks, srv_show_verbose_locks, + PLUGIN_VAR_OPCMDARG, + "Whether to show records locked in SHOW INNODB STATUS.", + NULL, NULL, 0, 0, 1, 0); + +static MYSQL_SYSVAR_ULONG(show_locks_held, srv_show_locks_held, + PLUGIN_VAR_RQCMDARG, + "Number of locks held to print for each InnoDB transaction in SHOW INNODB STATUS.", + NULL, NULL, 10, 0, 1000, 0); + +#ifdef UNIV_LOG_ARCHIVE +static MYSQL_SYSVAR_STR(log_arch_dir, innobase_log_arch_dir, + PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY, + "Where full logs should be archived.", NULL, NULL, NULL); + +static MYSQL_SYSVAR_BOOL(log_archive, innobase_log_archive, + PLUGIN_VAR_OPCMDARG | PLUGIN_VAR_READONLY, + "Set to 1 if you want to have logs archived.", NULL, NULL, FALSE); +#endif /* UNIV_LOG_ARCHIVE */ + +static MYSQL_SYSVAR_STR(log_group_home_dir, innobase_log_group_home_dir, + PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY, + "Path to InnoDB log files.", NULL, NULL, NULL); + +static MYSQL_SYSVAR_ULONG(max_dirty_pages_pct, srv_max_buf_pool_modified_pct, + PLUGIN_VAR_RQCMDARG, + "Percentage of dirty pages allowed in bufferpool.", + NULL, NULL, 90, 0, 100, 0); + +static MYSQL_SYSVAR_ULONG(max_purge_lag, srv_max_purge_lag, + PLUGIN_VAR_RQCMDARG, + "Desired maximum length of the purge queue (0 = no limit)", + NULL, NULL, 0, 0, ~0L, 0); + +static MYSQL_SYSVAR_BOOL(rollback_on_timeout, innobase_rollback_on_timeout, + PLUGIN_VAR_OPCMDARG | PLUGIN_VAR_READONLY, + "Roll back the complete transaction on lock wait timeout, for 4.x compatibility (disabled by default)", + NULL, NULL, FALSE); + +static MYSQL_SYSVAR_BOOL(status_file, innobase_create_status_file, + PLUGIN_VAR_OPCMDARG | PLUGIN_VAR_NOSYSVAR, + "Enable SHOW INNODB STATUS output in the innodb_status.<pid> file", + NULL, NULL, FALSE); + +static MYSQL_SYSVAR_BOOL(stats_on_metadata, innobase_stats_on_metadata, + PLUGIN_VAR_OPCMDARG, + "Enable statistics gathering for metadata commands such as SHOW TABLE STATUS (on by default)", + NULL, NULL, TRUE); + +static MYSQL_SYSVAR_ULONGLONG(stats_sample_pages, srv_stats_sample_pages, + PLUGIN_VAR_RQCMDARG, + "The number of index pages to sample when calculating statistics (default 8)", + NULL, NULL, 8, 1, ~0ULL, 0); + +static MYSQL_SYSVAR_BOOL(adaptive_hash_index, btr_search_enabled, + PLUGIN_VAR_OPCMDARG, + "Enable InnoDB adaptive hash index (enabled by default). " + "Disable with --skip-innodb-adaptive-hash-index.", + NULL, innodb_adaptive_hash_index_update, TRUE); + +static MYSQL_SYSVAR_ULONG(replication_delay, srv_replication_delay, + PLUGIN_VAR_RQCMDARG, + "Replication thread delay (ms) on the slave server if " + "innodb_thread_concurrency is reached (0 by default)", + NULL, NULL, 0, 0, ~0UL, 0); + +static MYSQL_SYSVAR_LONG(additional_mem_pool_size, innobase_additional_mem_pool_size, + PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY, + "Size of a memory pool InnoDB uses to store data dictionary information and other internal data structures.", + NULL, NULL, 1*1024*1024L, 512*1024L, LONG_MAX, 1024); + +static MYSQL_SYSVAR_ULONG(autoextend_increment, srv_auto_extend_increment, + PLUGIN_VAR_RQCMDARG, + "Data file autoextend increment in megabytes", + NULL, NULL, 8L, 1L, 1000L, 0); + +static MYSQL_SYSVAR_LONGLONG(buffer_pool_size, innobase_buffer_pool_size, + PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY, + "The size of the memory buffer InnoDB uses to cache data and indexes of its tables.", + NULL, NULL, 8*1024*1024L, 5*1024*1024L, LONGLONG_MAX, 1024*1024L); + +static MYSQL_SYSVAR_ULONG(commit_concurrency, srv_commit_concurrency, + PLUGIN_VAR_RQCMDARG, + "Helps in performance tuning in heavily concurrent environments.", + NULL, NULL, 0, 0, 1000, 0); + +static MYSQL_SYSVAR_ULONG(concurrency_tickets, srv_n_free_tickets_to_enter, + PLUGIN_VAR_RQCMDARG, + "Number of times a thread is allowed to enter InnoDB within the same SQL query after it has once got the ticket", + NULL, NULL, 500L, 1L, ~0L, 0); + +static MYSQL_SYSVAR_LONG(file_io_threads, innobase_file_io_threads, + PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY, + "Number of file I/O threads in InnoDB.", + NULL, NULL, 4, 4, 64, 0); + +static MYSQL_SYSVAR_LONG(force_recovery, innobase_force_recovery, + PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY, + "Helps to save your data in case the disk image of the database becomes corrupt.", + NULL, NULL, 0, 0, 6, 0); + +static MYSQL_SYSVAR_LONG(log_buffer_size, innobase_log_buffer_size, + PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY, + "The size of the buffer which InnoDB uses to write log to the log files on disk.", + NULL, NULL, 1024*1024L, 256*1024L, LONG_MAX, 1024); + +static MYSQL_SYSVAR_LONGLONG(log_file_size, innobase_log_file_size, + PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY, + "Size of each log file in a log group.", + NULL, NULL, 5*1024*1024L, 1*1024*1024L, LONGLONG_MAX, 1024*1024L); + +static MYSQL_SYSVAR_LONG(log_files_in_group, innobase_log_files_in_group, + PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY, + "Number of log files in the log group. InnoDB writes to the files in a circular fashion. Value 3 is recommended here.", + NULL, NULL, 2, 2, 100, 0); + +static MYSQL_SYSVAR_LONG(mirrored_log_groups, innobase_mirrored_log_groups, + PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY, + "Number of identical copies of log groups we keep for the database. Currently this should be set to 1.", + NULL, NULL, 1, 1, 10, 0); + +static MYSQL_SYSVAR_LONG(open_files, innobase_open_files, + PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY, + "How many files at the maximum InnoDB keeps open at the same time.", + NULL, NULL, 300L, 10L, LONG_MAX, 0); + +static MYSQL_SYSVAR_ULONG(sync_spin_loops, srv_n_spin_wait_rounds, + PLUGIN_VAR_RQCMDARG, + "Count of spin-loop rounds in InnoDB mutexes", + NULL, NULL, 20L, 0L, ~0L, 0); + +static MYSQL_SYSVAR_ULONG(thread_concurrency, srv_thread_concurrency, + PLUGIN_VAR_RQCMDARG, + "Helps in performance tuning in heavily concurrent environments. Sets the maximum number of threads allowed inside InnoDB. Value 0 will disable the thread throttling.", + NULL, NULL, 0, 0, 1000, 0); + +static MYSQL_SYSVAR_ULONG(thread_sleep_delay, srv_thread_sleep_delay, + PLUGIN_VAR_RQCMDARG, + "Time of innodb thread sleeping before joining InnoDB queue (usec). Value 0 disable a sleep", + NULL, NULL, 10000L, 0L, ~0L, 0); + +static MYSQL_SYSVAR_STR(data_file_path, innobase_data_file_path, + PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY, + "Path to individual files and their sizes.", + NULL, NULL, NULL); + +static MYSQL_SYSVAR_LONG(autoinc_lock_mode, innobase_autoinc_lock_mode, + PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY, + "The AUTOINC lock modes supported by InnoDB: " + "0 => Old style AUTOINC locking (for backward" + " compatibility) " + "1 => New style AUTOINC locking " + "2 => No AUTOINC locking (unsafe for SBR)", + NULL, NULL, + AUTOINC_NEW_STYLE_LOCKING, /* Default setting */ + AUTOINC_OLD_STYLE_LOCKING, /* Minimum value */ + AUTOINC_NO_LOCKING, 0); /* Maximum value */ + +static MYSQL_SYSVAR_STR(version, innodb_version_str, + PLUGIN_VAR_NOCMDOPT | PLUGIN_VAR_READONLY, + "Percona-InnoDB-plugin version", NULL, NULL, INNODB_VERSION_STR); + +static MYSQL_SYSVAR_BOOL(use_sys_malloc, srv_use_sys_malloc, + PLUGIN_VAR_NOCMDARG | PLUGIN_VAR_READONLY, + "Use OS memory allocator instead of InnoDB's internal memory allocator", + NULL, NULL, TRUE); + +static MYSQL_SYSVAR_STR(change_buffering, innobase_change_buffering, + PLUGIN_VAR_RQCMDARG, + "Buffer changes to reduce random access: " + "OFF, ON, inserting, deleting, changing, or purging.", + innodb_change_buffering_validate, + innodb_change_buffering_update, NULL); + +static MYSQL_SYSVAR_ULONG(io_capacity, srv_io_capacity, + PLUGIN_VAR_RQCMDARG, + "Number of IO operations per second the server can do. Tunes background IO rate.", + NULL, NULL, 100, 100, 999999999, 0); + +static MYSQL_SYSVAR_LONGLONG(ibuf_max_size, srv_ibuf_max_size, + PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY, + "The maximum size of the insert buffer. (in bytes)", + NULL, NULL, LONGLONG_MAX, 0, LONGLONG_MAX, 0); + +static MYSQL_SYSVAR_ULONG(ibuf_active_contract, srv_ibuf_active_contract, + PLUGIN_VAR_RQCMDARG, + "Enable/Disable active_contract of insert buffer. 0:disable 1:enable", + NULL, NULL, 0, 0, 1, 0); + +static MYSQL_SYSVAR_ULONG(ibuf_accel_rate, srv_ibuf_accel_rate, + PLUGIN_VAR_RQCMDARG, + "Tunes amount of insert buffer processing of background, in addition to innodb_io_capacity. (in percentage)", + NULL, NULL, 100, 100, 999999999, 0); + +static MYSQL_SYSVAR_ULONG(flush_neighbor_pages, srv_flush_neighbor_pages, + PLUGIN_VAR_RQCMDARG, + "Enable/Disable flushing also neighbor pages. 0:disable 1:enable", + NULL, NULL, 1, 0, 1, 0); + +static +void +innodb_read_ahead_update( + THD* thd, + struct st_mysql_sys_var* var, + void* var_ptr, + const void* save) +{ + *(long *)var_ptr= (*(long *)save) & 3; +} +const char *read_ahead_names[]= +{ + "none", /* 0 */ + "random", + "linear", + "both", /* 3 */ + /* For compatibility of the older patch */ + "0", /* 4 ("none" + 4) */ + "1", + "2", + "3", /* 7 ("both" + 4) */ + NullS +}; +TYPELIB read_ahead_typelib= +{ + array_elements(read_ahead_names) - 1, "read_ahead_typelib", + read_ahead_names, NULL +}; +static MYSQL_SYSVAR_ENUM(read_ahead, srv_read_ahead, + PLUGIN_VAR_RQCMDARG, + "Control read ahead activity. (none, random, linear, [both])", + NULL, innodb_read_ahead_update, 3, &read_ahead_typelib); + +static MYSQL_SYSVAR_ULONG(adaptive_checkpoint, srv_adaptive_checkpoint, + PLUGIN_VAR_RQCMDARG, + "Enable/Disable flushing along modified age. 0:disable 1:enable", + NULL, NULL, 0, 0, 1, 0); + +static MYSQL_SYSVAR_ULONG(enable_unsafe_group_commit, srv_enable_unsafe_group_commit, + PLUGIN_VAR_RQCMDARG, + "Enable/Disable unsafe group commit when support_xa=OFF and use with binlog or other XA storage engine.", + NULL, NULL, 0, 0, 1, 0); + +static MYSQL_SYSVAR_ULONG(read_io_threads, innobase_read_io_threads, + PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY, + "Number of background read I/O threads in InnoDB.", + NULL, NULL, 1, 1, 64, 0); + +static MYSQL_SYSVAR_ULONG(write_io_threads, innobase_write_io_threads, + PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY, + "Number of background write I/O threads in InnoDB.", + NULL, NULL, 1, 1, 64, 0); + +static MYSQL_SYSVAR_ULONG(extra_rsegments, srv_extra_rsegments, + PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY, + "Number of extra user rollback segments when create new database.", + NULL, NULL, 0, 0, 127, 0); + +static struct st_mysql_sys_var* innobase_system_variables[]= { + MYSQL_SYSVAR(additional_mem_pool_size), + MYSQL_SYSVAR(autoextend_increment), + MYSQL_SYSVAR(buffer_pool_size), + MYSQL_SYSVAR(checksums), + MYSQL_SYSVAR(commit_concurrency), + MYSQL_SYSVAR(concurrency_tickets), + MYSQL_SYSVAR(data_file_path), + MYSQL_SYSVAR(data_home_dir), + MYSQL_SYSVAR(doublewrite), + MYSQL_SYSVAR(extra_undoslots), + MYSQL_SYSVAR(fast_shutdown), + MYSQL_SYSVAR(file_io_threads), + MYSQL_SYSVAR(file_per_table), + MYSQL_SYSVAR(file_format), + MYSQL_SYSVAR(file_format_check), + MYSQL_SYSVAR(flush_log_at_trx_commit), + MYSQL_SYSVAR(flush_method), + MYSQL_SYSVAR(force_recovery), + MYSQL_SYSVAR(locks_unsafe_for_binlog), + MYSQL_SYSVAR(lock_wait_timeout), +#ifdef UNIV_LOG_ARCHIVE + MYSQL_SYSVAR(log_arch_dir), + MYSQL_SYSVAR(log_archive), +#endif /* UNIV_LOG_ARCHIVE */ + MYSQL_SYSVAR(log_buffer_size), + MYSQL_SYSVAR(log_file_size), + MYSQL_SYSVAR(log_files_in_group), + MYSQL_SYSVAR(log_group_home_dir), + MYSQL_SYSVAR(max_dirty_pages_pct), + MYSQL_SYSVAR(max_purge_lag), + MYSQL_SYSVAR(mirrored_log_groups), + MYSQL_SYSVAR(open_files), + MYSQL_SYSVAR(overwrite_relay_log_info), + MYSQL_SYSVAR(rollback_on_timeout), + MYSQL_SYSVAR(stats_on_metadata), + MYSQL_SYSVAR(stats_sample_pages), + MYSQL_SYSVAR(adaptive_hash_index), + MYSQL_SYSVAR(replication_delay), + MYSQL_SYSVAR(status_file), + MYSQL_SYSVAR(strict_mode), + MYSQL_SYSVAR(support_xa), + MYSQL_SYSVAR(sync_spin_loops), + MYSQL_SYSVAR(table_locks), + MYSQL_SYSVAR(thread_concurrency), + MYSQL_SYSVAR(thread_sleep_delay), + MYSQL_SYSVAR(autoinc_lock_mode), + MYSQL_SYSVAR(show_verbose_locks), + MYSQL_SYSVAR(show_locks_held), + MYSQL_SYSVAR(version), + MYSQL_SYSVAR(io_capacity), + MYSQL_SYSVAR(ibuf_max_size), + MYSQL_SYSVAR(ibuf_active_contract), + MYSQL_SYSVAR(ibuf_accel_rate), + MYSQL_SYSVAR(flush_neighbor_pages), + MYSQL_SYSVAR(read_ahead), + MYSQL_SYSVAR(adaptive_checkpoint), + MYSQL_SYSVAR(enable_unsafe_group_commit), + MYSQL_SYSVAR(read_io_threads), + MYSQL_SYSVAR(write_io_threads), + MYSQL_SYSVAR(extra_rsegments), + MYSQL_SYSVAR(use_sys_malloc), + MYSQL_SYSVAR(change_buffering), + NULL +}; + +#ifdef MYSQL_DYNAMIC_PLUGIN +struct st_mysql_sys_var +{ + MYSQL_PLUGIN_VAR_HEADER; + void* value; +}; + +struct param_mapping +{ + const char* server; /* Parameter name in the server. */ + const char* plugin; /* Paramater name in the plugin. */ +}; + +/******************************************************************** +Match the parameters from the static and dynamic versions. */ +static +bool +innobase_match_parameter( +/*=====================*/ + /* out: true if names match */ + const char* from_server, /* in: variable name from server */ + const char* from_plugin) /* in: variable name from plugin */ +{ + static const param_mapping param_map[] = { + {"use_adaptive_hash_indexes", "adaptive_hash_index"} + }; + + if (strcmp(from_server, from_plugin) == 0) { + return(true); + } + + const param_mapping* param = param_map; + int n_elems = sizeof(param_map) / sizeof(param_map[0]); + + for (int i = 0; i < n_elems; ++i, ++param) { + + if (strcmp(param->server, from_server) == 0 + && strcmp(param->plugin, from_plugin) == 0) { + + return(true); + } + } + + return(false); +} + +/******************************************************************** +Copy InnoDB system variables from the static InnoDB to the dynamic +plugin. */ +static +bool +innodb_plugin_init(void) +/*====================*/ + /* out: TRUE if the dynamic InnoDB plugin should start */ +{ +#if !MYSQL_STORAGE_ENGINE_PLUGIN +#error "MYSQL_STORAGE_ENGINE_PLUGIN must be nonzero." +#endif + + /* Copy the system variables. */ + + struct st_mysql_plugin* builtin; + struct st_mysql_sys_var** sta; /* static parameters */ + struct st_mysql_sys_var** dyn; /* dynamic parameters */ + +#ifdef __WIN__ + if (!builtin_innobase_plugin_ptr) { + + return(true); + } + + builtin = builtin_innobase_plugin_ptr; +#else + switch (builtin_innobase_plugin) { + case 0: + return(true); + case MYSQL_STORAGE_ENGINE_PLUGIN: + break; + default: + return(false); + } + + builtin = (struct st_mysql_plugin*) &builtin_innobase_plugin; +#endif + + for (sta = builtin->system_vars; *sta != NULL; sta++) { + + for (dyn = innobase_system_variables; *dyn != NULL; dyn++) { + + /* do not copy session variables */ + if (((*sta)->flags | (*dyn)->flags) + & PLUGIN_VAR_THDLOCAL) { + continue; + } + + if (innobase_match_parameter((*sta)->name, + (*dyn)->name)) { + + /* found the corresponding parameter */ + + /* check if the flags are the same, + ignoring differences in the READONLY or + NOSYSVAR flags; + e.g. we are not copying string variable to + an integer one, but we do not care if it is + readonly in the static and not in the + dynamic */ + if (((*sta)->flags ^ (*dyn)->flags) + & ~(PLUGIN_VAR_READONLY + | PLUGIN_VAR_NOSYSVAR)) { + + fprintf(stderr, + "InnoDB: %s in static InnoDB " + "(flags=0x%x) differs from " + "%s in dynamic InnoDB " + "(flags=0x%x)\n", + (*sta)->name, (*sta)->flags, + (*dyn)->name, (*dyn)->flags); + + /* we could break; here leaving this + parameter uncopied */ + return(false); + } + + /* assign the value of the static parameter + to the dynamic one, according to their type */ + +#define COPY_VAR(label, type) \ + case label: \ + *(type*)(*dyn)->value = *(type*)(*sta)->value; \ + break; + + switch ((*sta)->flags + & ~(PLUGIN_VAR_MASK + | PLUGIN_VAR_UNSIGNED)) { + + COPY_VAR(PLUGIN_VAR_BOOL, char); + COPY_VAR(PLUGIN_VAR_INT, int); + COPY_VAR(PLUGIN_VAR_LONG, long); + COPY_VAR(PLUGIN_VAR_LONGLONG, long long); + COPY_VAR(PLUGIN_VAR_STR, char*); + + default: + fprintf(stderr, + "InnoDB: unknown flags " + "0x%x for %s\n", + (*sta)->flags, (*sta)->name); + } + + /* Make the static InnoDB variable point to + the dynamic one */ + (*sta)->value = (*dyn)->value; + + break; + } + } + } + + return(true); +} +#endif /* MYSQL_DYNAMIC_PLUGIN */ + +mysql_declare_plugin(innobase) +{ + MYSQL_STORAGE_ENGINE_PLUGIN, + &innobase_storage_engine, + innobase_hton_name, + "Innobase Oy", + "Supports transactions, row-level locking, and foreign keys", + PLUGIN_LICENSE_GPL, + innobase_init, /* Plugin Init */ + NULL, /* Plugin Deinit */ + INNODB_VERSION_SHORT, + innodb_status_variables_export,/* status variables */ + innobase_system_variables, /* system variables */ + NULL /* reserved */ +}, +i_s_innodb_rseg, +i_s_innodb_buffer_pool_pages, +i_s_innodb_buffer_pool_pages_index, +i_s_innodb_buffer_pool_pages_blob, +i_s_innodb_trx, +i_s_innodb_locks, +i_s_innodb_lock_waits, +i_s_innodb_cmp, +i_s_innodb_cmp_reset, +i_s_innodb_cmpmem, +i_s_innodb_cmpmem_reset, +i_s_innodb_patches +mysql_declare_plugin_end; + +#ifdef UNIV_COMPILE_TEST_FUNCS + +typedef struct innobase_convert_name_test_struct { + char* buf; + ulint buflen; + const char* id; + ulint idlen; + void* thd; + ibool file_id; + + const char* expected; +} innobase_convert_name_test_t; + +void +test_innobase_convert_name() +{ + char buf[1024]; + ulint i; + + innobase_convert_name_test_t test_input[] = { + {buf, sizeof(buf), "abcd", 4, NULL, TRUE, "\"abcd\""}, + {buf, 7, "abcd", 4, NULL, TRUE, "\"abcd\""}, + {buf, 6, "abcd", 4, NULL, TRUE, "\"abcd\""}, + {buf, 5, "abcd", 4, NULL, TRUE, "\"abc\""}, + {buf, 4, "abcd", 4, NULL, TRUE, "\"ab\""}, + + {buf, sizeof(buf), "ab@0060cd", 9, NULL, TRUE, "\"ab`cd\""}, + {buf, 9, "ab@0060cd", 9, NULL, TRUE, "\"ab`cd\""}, + {buf, 8, "ab@0060cd", 9, NULL, TRUE, "\"ab`cd\""}, + {buf, 7, "ab@0060cd", 9, NULL, TRUE, "\"ab`cd\""}, + {buf, 6, "ab@0060cd", 9, NULL, TRUE, "\"ab`c\""}, + {buf, 5, "ab@0060cd", 9, NULL, TRUE, "\"ab`\""}, + {buf, 4, "ab@0060cd", 9, NULL, TRUE, "\"ab\""}, + + {buf, sizeof(buf), "ab\"cd", 5, NULL, TRUE, + "\"#mysql50#ab\"\"cd\""}, + {buf, 17, "ab\"cd", 5, NULL, TRUE, + "\"#mysql50#ab\"\"cd\""}, + {buf, 16, "ab\"cd", 5, NULL, TRUE, + "\"#mysql50#ab\"\"c\""}, + {buf, 15, "ab\"cd", 5, NULL, TRUE, + "\"#mysql50#ab\"\"\""}, + {buf, 14, "ab\"cd", 5, NULL, TRUE, + "\"#mysql50#ab\""}, + {buf, 13, "ab\"cd", 5, NULL, TRUE, + "\"#mysql50#ab\""}, + {buf, 12, "ab\"cd", 5, NULL, TRUE, + "\"#mysql50#a\""}, + {buf, 11, "ab\"cd", 5, NULL, TRUE, + "\"#mysql50#\""}, + {buf, 10, "ab\"cd", 5, NULL, TRUE, + "\"#mysql50\""}, + + {buf, sizeof(buf), "ab/cd", 5, NULL, TRUE, "\"ab\".\"cd\""}, + {buf, 9, "ab/cd", 5, NULL, TRUE, "\"ab\".\"cd\""}, + {buf, 8, "ab/cd", 5, NULL, TRUE, "\"ab\".\"c\""}, + {buf, 7, "ab/cd", 5, NULL, TRUE, "\"ab\".\"\""}, + {buf, 6, "ab/cd", 5, NULL, TRUE, "\"ab\"."}, + {buf, 5, "ab/cd", 5, NULL, TRUE, "\"ab\"."}, + {buf, 4, "ab/cd", 5, NULL, TRUE, "\"ab\""}, + {buf, 3, "ab/cd", 5, NULL, TRUE, "\"a\""}, + {buf, 2, "ab/cd", 5, NULL, TRUE, "\"\""}, + /* XXX probably "" is a better result in this case + {buf, 1, "ab/cd", 5, NULL, TRUE, "."}, + */ + {buf, 0, "ab/cd", 5, NULL, TRUE, ""}, + }; + + for (i = 0; i < sizeof(test_input) / sizeof(test_input[0]); i++) { + + char* end; + ibool ok = TRUE; + size_t res_len; + + fprintf(stderr, "TESTING %lu, %s, %lu, %s\n", + test_input[i].buflen, + test_input[i].id, + test_input[i].idlen, + test_input[i].expected); + + end = innobase_convert_name( + test_input[i].buf, + test_input[i].buflen, + test_input[i].id, + test_input[i].idlen, + test_input[i].thd, + test_input[i].file_id); + + res_len = (size_t) (end - test_input[i].buf); + + if (res_len != strlen(test_input[i].expected)) { + + fprintf(stderr, "unexpected len of the result: %u, " + "expected: %u\n", (unsigned) res_len, + (unsigned) strlen(test_input[i].expected)); + ok = FALSE; + } + + if (memcmp(test_input[i].buf, + test_input[i].expected, + strlen(test_input[i].expected)) != 0 + || !ok) { + + fprintf(stderr, "unexpected result: %.*s, " + "expected: %s\n", (int) res_len, + test_input[i].buf, + test_input[i].expected); + ok = FALSE; + } + + if (ok) { + fprintf(stderr, "OK: res: %.*s\n\n", (int) res_len, + buf); + } else { + fprintf(stderr, "FAILED\n\n"); + return; + } + } +} + +#endif /* UNIV_COMPILE_TEST_FUNCS */ === added file 'storage/xtradb/handler/ha_innodb.h' --- a/storage/xtradb/handler/ha_innodb.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/handler/ha_innodb.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,283 @@ +/***************************************************************************** + +Copyright (c) 2000, 2009, MySQL AB & Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/* + This file is based on ha_berkeley.h of MySQL distribution + + This file defines the Innodb handler: the interface between MySQL and + Innodb +*/ + +#ifdef USE_PRAGMA_INTERFACE +#pragma interface /* gcc class implementation */ +#endif + +typedef struct st_innobase_share { + THR_LOCK lock; + pthread_mutex_t mutex; + const char* table_name; + uint use_count; + void* table_name_hash; +} INNOBASE_SHARE; + + +struct dict_index_struct; +struct row_prebuilt_struct; + +typedef struct dict_index_struct dict_index_t; +typedef struct row_prebuilt_struct row_prebuilt_t; + +/* The class defining a handle to an Innodb table */ +class ha_innobase: public handler +{ + row_prebuilt_t* prebuilt; /* prebuilt struct in InnoDB, used + to save CPU time with prebuilt data + structures*/ + THD* user_thd; /* the thread handle of the user + currently using the handle; this is + set in external_lock function */ + THR_LOCK_DATA lock; + INNOBASE_SHARE *share; + + uchar* upd_buff; /* buffer used in updates */ + uchar* key_val_buff; /* buffer used in converting + search key values from MySQL format + to Innodb format */ + ulong upd_and_key_val_buff_len; + /* the length of each of the previous + two buffers */ + Table_flags int_table_flags; + uint primary_key; + ulong start_of_scan; /* this is set to 1 when we are + starting a table scan but have not + yet fetched any row, else 0 */ + uint last_match_mode;/* match mode of the latest search: + ROW_SEL_EXACT, ROW_SEL_EXACT_PREFIX, + or undefined */ + uint num_write_row; /* number of write_row() calls */ + + uint store_key_val_for_row(uint keynr, char* buff, uint buff_len, + const uchar* record); + inline void update_thd(THD* thd); + void update_thd(); + int change_active_index(uint keynr); + int general_fetch(uchar* buf, uint direction, uint match_mode); + ulint innobase_lock_autoinc(); + ulonglong innobase_peek_autoinc(); + ulint innobase_set_max_autoinc(ulonglong auto_inc); + ulint innobase_reset_autoinc(ulonglong auto_inc); + ulint innobase_get_autoinc(ulonglong* value); + ulint innobase_update_autoinc(ulonglong auto_inc); + ulint innobase_initialize_autoinc(); + dict_index_t* innobase_get_index(uint keynr); + ulonglong innobase_get_int_col_max_value(const Field* field); + + /* Init values for the class: */ + public: + ha_innobase(handlerton *hton, TABLE_SHARE *table_arg); + ~ha_innobase(); + /* + Get the row type from the storage engine. If this method returns + ROW_TYPE_NOT_USED, the information in HA_CREATE_INFO should be used. + */ + enum row_type get_row_type() const; + + const char* table_type() const; + const char* index_type(uint key_number); + const char** bas_ext() const; + Table_flags table_flags() const; + ulong index_flags(uint idx, uint part, bool all_parts) const; + uint max_supported_keys() const; + uint max_supported_key_length() const; + uint max_supported_key_part_length() const; + const key_map* keys_to_use_for_scanning(); + + int open(const char *name, int mode, uint test_if_locked); + int close(void); + double scan_time(); + double read_time(uint index, uint ranges, ha_rows rows); + + int write_row(uchar * buf); + int update_row(const uchar * old_data, uchar * new_data); + int delete_row(const uchar * buf); + bool was_semi_consistent_read(); + void try_semi_consistent_read(bool yes); + void unlock_row(); + +#ifdef ROW_MERGE_IS_INDEX_USABLE + /** Check if an index can be used by this transaction. + * @param keynr key number to check + * @return true if available, false if the index + * does not contain old records that exist + * in the read view of this transaction */ + bool is_index_available(uint keynr); +#endif /* ROW_MERGE_IS_INDEX_USABLE */ + int index_init(uint index, bool sorted); + int index_end(); + int index_read(uchar * buf, const uchar * key, + uint key_len, enum ha_rkey_function find_flag); + int index_read_idx(uchar * buf, uint index, const uchar * key, + uint key_len, enum ha_rkey_function find_flag); + int index_read_last(uchar * buf, const uchar * key, uint key_len); + int index_next(uchar * buf); + int index_next_same(uchar * buf, const uchar *key, uint keylen); + int index_prev(uchar * buf); + int index_first(uchar * buf); + int index_last(uchar * buf); + + int rnd_init(bool scan); + int rnd_end(); + int rnd_next(uchar *buf); + int rnd_pos(uchar * buf, uchar *pos); + + void position(const uchar *record); + int info(uint); + int analyze(THD* thd,HA_CHECK_OPT* check_opt); + int optimize(THD* thd,HA_CHECK_OPT* check_opt); + int discard_or_import_tablespace(my_bool discard); + int extra(enum ha_extra_function operation); + int reset(); + int external_lock(THD *thd, int lock_type); + int transactional_table_lock(THD *thd, int lock_type); + int start_stmt(THD *thd, thr_lock_type lock_type); + void position(uchar *record); + ha_rows records_in_range(uint inx, key_range *min_key, key_range + *max_key); + ha_rows estimate_rows_upper_bound(); + + void update_create_info(HA_CREATE_INFO* create_info); + int create(const char *name, register TABLE *form, + HA_CREATE_INFO *create_info); + int delete_all_rows(); + int delete_table(const char *name); + int rename_table(const char* from, const char* to); + int check(THD* thd, HA_CHECK_OPT* check_opt); + char* update_table_comment(const char* comment); + char* get_foreign_key_create_info(); + int get_foreign_key_list(THD *thd, List<FOREIGN_KEY_INFO> *f_key_list); + bool can_switch_engines(); + uint referenced_by_foreign_key(); + void free_foreign_key_create_info(char* str); + THR_LOCK_DATA **store_lock(THD *thd, THR_LOCK_DATA **to, + enum thr_lock_type lock_type); + void init_table_handle_for_HANDLER(); + virtual void get_auto_increment(ulonglong offset, ulonglong increment, + ulonglong nb_desired_values, + ulonglong *first_value, + ulonglong *nb_reserved_values); + int reset_auto_increment(ulonglong value); + + virtual bool get_error_message(int error, String *buf); + + uint8 table_cache_type(); + /* + ask handler about permission to cache table during query registration + */ + my_bool register_query_cache_table(THD *thd, char *table_key, + uint key_length, + qc_engine_callback *call_back, + ulonglong *engine_data); + static char *get_mysql_bin_log_name(); + static ulonglong get_mysql_bin_log_pos(); + bool primary_key_is_clustered(); + int cmp_ref(const uchar *ref1, const uchar *ref2); + /** Fast index creation (smart ALTER TABLE) @see handler0alter.cc @{ */ + int add_index(TABLE *table_arg, KEY *key_info, uint num_of_keys); + int prepare_drop_index(TABLE *table_arg, uint *key_num, + uint num_of_keys); + int final_drop_index(TABLE *table_arg); + /** @} */ + bool check_if_incompatible_data(HA_CREATE_INFO *info, + uint table_changes); +}; + +/* Some accessor functions which the InnoDB plugin needs, but which +can not be added to mysql/plugin.h as part of the public interface; +the definitions are bracketed with #ifdef INNODB_COMPATIBILITY_HOOKS */ + +#ifndef INNODB_COMPATIBILITY_HOOKS +#error InnoDB needs MySQL to be built with #define INNODB_COMPATIBILITY_HOOKS +#endif + +extern "C" { +struct charset_info_st *thd_charset(MYSQL_THD thd); +char **thd_query(MYSQL_THD thd); + +/** Get the file name of the MySQL binlog. + * @return the name of the binlog file + */ +const char* mysql_bin_log_file_name(void); + +/** Get the current position of the MySQL binlog. + * @return byte offset from the beginning of the binlog + */ +ulonglong mysql_bin_log_file_pos(void); + +/** + Check if a user thread is a replication slave thread + @param thd user thread + @retval 0 the user thread is not a replication slave thread + @retval 1 the user thread is a replication slave thread +*/ +int thd_slave_thread(const MYSQL_THD thd); + +/** + Check if a user thread is running a non-transactional update + @param thd user thread + @retval 0 the user thread is not running a non-transactional update + @retval 1 the user thread is running a non-transactional update +*/ +int thd_non_transactional_update(const MYSQL_THD thd); + +/** + Get the user thread's binary logging format + @param thd user thread + @return Value to be used as index into the binlog_format_names array +*/ +int thd_binlog_format(const MYSQL_THD thd); + +/** + Mark transaction to rollback and mark error as fatal to a sub-statement. + @param thd Thread handle + @param all TRUE <=> rollback main transaction. +*/ +void thd_mark_transaction_to_rollback(MYSQL_THD thd, bool all); +} + +typedef struct trx_struct trx_t; +/************************************************************************ +Converts an InnoDB error code to a MySQL error code and also tells to MySQL +about a possible transaction rollback inside InnoDB caused by a lock wait +timeout or a deadlock. */ +extern "C" +int +convert_error_code_to_mysql( +/*========================*/ + /* out: MySQL error code */ + int error, /* in: InnoDB error code */ + ulint flags, /* in: InnoDB table flags, or 0 */ + MYSQL_THD thd); /* in: user thread handle or NULL */ + +/************************************************************************* +Allocates an InnoDB transaction for a MySQL handler object. */ +extern "C" +trx_t* +innobase_trx_allocate( +/*==================*/ + /* out: InnoDB transaction handle */ + MYSQL_THD thd); /* in: user thread handle */ === added file 'storage/xtradb/handler/handler0alter.cc' --- a/storage/xtradb/handler/handler0alter.cc 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/handler/handler0alter.cc 2009-03-26 06:11:11 +0000 @@ -0,0 +1,1214 @@ +/***************************************************************************** + +Copyright (c) 2005, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Smart ALTER TABLE +*******************************************************/ + +#include <mysql_priv.h> +#include <mysqld_error.h> + +extern "C" { +#include "log0log.h" +#include "row0merge.h" +#include "srv0srv.h" +#include "trx0trx.h" +#include "trx0roll.h" +#include "ha_prototypes.h" +#include "handler0alter.h" +} + +#include "ha_innodb.h" +#include "handler0vars.h" + +/***************************************************************** +Copies an InnoDB column to a MySQL field. This function is +adapted from row_sel_field_store_in_mysql_format(). */ +static +void +innobase_col_to_mysql( +/*==================*/ + const dict_col_t* col, /* in: InnoDB column */ + const uchar* data, /* in: InnoDB column data */ + ulint len, /* in: length of data, in bytes */ + Field* field) /* in/out: MySQL field */ +{ + uchar* ptr; + uchar* dest = field->ptr; + ulint flen = field->pack_length(); + + switch (col->mtype) { + case DATA_INT: + ut_ad(len == flen); + + /* Convert integer data from Innobase to little-endian + format, sign bit restored to normal */ + + for (ptr = dest + len; ptr != dest; ) { + *--ptr = *data++; + } + + if (!(field->flags & UNSIGNED_FLAG)) { + ((byte*) dest)[len - 1] ^= 0x80; + } + + break; + + case DATA_VARCHAR: + case DATA_VARMYSQL: + case DATA_BINARY: + field->reset(); + + if (field->type() == MYSQL_TYPE_VARCHAR) { + /* This is a >= 5.0.3 type true VARCHAR. Store the + length of the data to the first byte or the first + two bytes of dest. */ + + dest = row_mysql_store_true_var_len( + dest, len, flen - field->key_length()); + } + + /* Copy the actual data */ + memcpy(dest, data, len); + break; + + case DATA_BLOB: + /* Store a pointer to the BLOB buffer to dest: the BLOB was + already copied to the buffer in row_sel_store_mysql_rec */ + + row_mysql_store_blob_ref(dest, flen, data, len); + break; + +#ifdef UNIV_DEBUG + case DATA_MYSQL: + ut_ad(flen >= len); + ut_ad(col->mbmaxlen >= col->mbminlen); + ut_ad(col->mbmaxlen > col->mbminlen || flen == len); + memcpy(dest, data, len); + break; + + default: + case DATA_SYS_CHILD: + case DATA_SYS: + /* These column types should never be shipped to MySQL. */ + ut_ad(0); + + case DATA_CHAR: + case DATA_FIXBINARY: + case DATA_FLOAT: + case DATA_DOUBLE: + case DATA_DECIMAL: + /* Above are the valid column types for MySQL data. */ + ut_ad(flen == len); +#else /* UNIV_DEBUG */ + default: +#endif /* UNIV_DEBUG */ + memcpy(dest, data, len); + } +} + +/***************************************************************** +Copies an InnoDB record to table->record[0]. */ +extern "C" UNIV_INTERN +void +innobase_rec_to_mysql( +/*==================*/ + TABLE* table, /* in/out: MySQL table */ + const rec_t* rec, /* in: record */ + const dict_index_t* index, /* in: index */ + const ulint* offsets) /* in: rec_get_offsets( + rec, index, ...) */ +{ + uint n_fields = table->s->fields; + uint i; + + ut_ad(n_fields == dict_table_get_n_user_cols(index->table)); + + for (i = 0; i < n_fields; i++) { + Field* field = table->field[i]; + ulint ipos; + ulint ilen; + const uchar* ifield; + + field->reset(); + + ipos = dict_index_get_nth_col_pos(index, i); + + if (UNIV_UNLIKELY(ipos == ULINT_UNDEFINED)) { +null_field: + field->set_null(); + continue; + } + + ifield = rec_get_nth_field(rec, offsets, ipos, &ilen); + + /* Assign the NULL flag */ + if (ilen == UNIV_SQL_NULL) { + ut_ad(field->real_maybe_null()); + goto null_field; + } + + field->set_notnull(); + + innobase_col_to_mysql( + dict_field_get_col( + dict_index_get_nth_field(index, ipos)), + ifield, ilen, field); + } +} + +/***************************************************************** +Resets table->record[0]. */ +extern "C" UNIV_INTERN +void +innobase_rec_reset( +/*===============*/ + TABLE* table) /* in/out: MySQL table */ +{ + uint n_fields = table->s->fields; + uint i; + + for (i = 0; i < n_fields; i++) { + table->field[i]->set_default(); + } +} + +/********************************************************************** +Removes the filename encoding of a database and table name. */ +static +void +innobase_convert_tablename( +/*=======================*/ + char* s) /* in: identifier; out: decoded identifier */ +{ + uint errors; + + char* slash = strchr(s, '/'); + + if (slash) { + char* t; + /* Temporarily replace the '/' with NUL. */ + *slash = 0; + /* Convert the database name. */ + strconvert(&my_charset_filename, s, system_charset_info, + s, slash - s + 1, &errors); + + t = s + strlen(s); + ut_ad(slash >= t); + /* Append a '.' after the database name. */ + *t++ = '.'; + slash++; + /* Convert the table name. */ + strconvert(&my_charset_filename, slash, system_charset_info, + t, slash - t + strlen(slash), &errors); + } else { + strconvert(&my_charset_filename, s, + system_charset_info, s, strlen(s), &errors); + } +} + +/*********************************************************************** +This function checks that index keys are sensible. */ +static +int +innobase_check_index_keys( +/*======================*/ + /* out: 0 or error number */ + const KEY* key_info, /* in: Indexes to be created */ + ulint num_of_keys) /* in: Number of indexes to + be created */ +{ + ulint key_num; + + ut_ad(key_info); + ut_ad(num_of_keys); + + for (key_num = 0; key_num < num_of_keys; key_num++) { + const KEY& key = key_info[key_num]; + + /* Check that the same index name does not appear + twice in indexes to be created. */ + + for (ulint i = 0; i < key_num; i++) { + const KEY& key2 = key_info[i]; + + if (0 == strcmp(key.name, key2.name)) { + sql_print_error("InnoDB: key name `%s` appears" + " twice in CREATE INDEX\n", + key.name); + + return(ER_WRONG_NAME_FOR_INDEX); + } + } + + /* Check that MySQL does not try to create a column + prefix index field on an inappropriate data type and + that the same colum does not appear twice in the index. */ + + for (ulint i = 0; i < key.key_parts; i++) { + const KEY_PART_INFO& key_part1 + = key.key_part[i]; + const Field* field + = key_part1.field; + ibool is_unsigned; + + switch (get_innobase_type_from_mysql_type( + &is_unsigned, field)) { + default: + break; + case DATA_INT: + case DATA_FLOAT: + case DATA_DOUBLE: + case DATA_DECIMAL: + if (field->type() == MYSQL_TYPE_VARCHAR) { + if (key_part1.length + >= field->pack_length() + - ((Field_varstring*) field) + ->length_bytes) { + break; + } + } else { + if (key_part1.length + >= field->pack_length()) { + break; + } + } + + sql_print_error("InnoDB: MySQL is trying to" + " create a column prefix" + " index field on an" + " inappropriate data type." + " column `%s`," + " index `%s`.\n", + field->field_name, + key.name); + return(ER_WRONG_KEY_COLUMN); + } + + for (ulint j = 0; j < i; j++) { + const KEY_PART_INFO& key_part2 + = key.key_part[j]; + + if (strcmp(key_part1.field->field_name, + key_part2.field->field_name)) { + continue; + } + + sql_print_error("InnoDB: column `%s`" + " is not allowed to occur" + " twice in index `%s`.\n", + key_part1.field->field_name, + key.name); + return(ER_WRONG_KEY_COLUMN); + } + } + } + + return(0); +} + +/*********************************************************************** +Create index field definition for key part */ +static +void +innobase_create_index_field_def( +/*============================*/ + KEY_PART_INFO* key_part, /* in: MySQL key definition */ + mem_heap_t* heap, /* in: memory heap */ + merge_index_field_t* index_field) /* out: index field + definition for key_part */ +{ + Field* field; + ibool is_unsigned; + ulint col_type; + + DBUG_ENTER("innobase_create_index_field_def"); + + ut_ad(key_part); + ut_ad(index_field); + + field = key_part->field; + ut_a(field); + + col_type = get_innobase_type_from_mysql_type(&is_unsigned, field); + + if (DATA_BLOB == col_type + || (key_part->length < field->pack_length() + && field->type() != MYSQL_TYPE_VARCHAR) + || (field->type() == MYSQL_TYPE_VARCHAR + && key_part->length < field->pack_length() + - ((Field_varstring*)field)->length_bytes)) { + + index_field->prefix_len = key_part->length; + } else { + index_field->prefix_len = 0; + } + + index_field->field_name = mem_heap_strdup(heap, field->field_name); + + DBUG_VOID_RETURN; +} + +/*********************************************************************** +Create index definition for key */ +static +void +innobase_create_index_def( +/*======================*/ + KEY* key, /* in: key definition */ + bool new_primary, /* in: TRUE=generating + a new primary key + on the table */ + bool key_primary, /* in: TRUE if this key + is a primary key */ + merge_index_def_t* index, /* out: index definition */ + mem_heap_t* heap) /* in: heap where memory + is allocated */ +{ + ulint i; + ulint len; + ulint n_fields = key->key_parts; + char* index_name; + + DBUG_ENTER("innobase_create_index_def"); + + index->fields = (merge_index_field_t*) mem_heap_alloc( + heap, n_fields * sizeof *index->fields); + + index->ind_type = 0; + index->n_fields = n_fields; + len = strlen(key->name) + 1; + index->name = index_name = (char*) mem_heap_alloc(heap, + len + !new_primary); + + if (UNIV_LIKELY(!new_primary)) { + *index_name++ = TEMP_INDEX_PREFIX; + } + + memcpy(index_name, key->name, len); + + if (key->flags & HA_NOSAME) { + index->ind_type |= DICT_UNIQUE; + } + + if (key_primary) { + index->ind_type |= DICT_CLUSTERED; + } + + for (i = 0; i < n_fields; i++) { + innobase_create_index_field_def(&key->key_part[i], heap, + &index->fields[i]); + } + + DBUG_VOID_RETURN; +} + +/*********************************************************************** +Copy index field definition */ +static +void +innobase_copy_index_field_def( +/*==========================*/ + const dict_field_t* field, /* in: definition to copy */ + merge_index_field_t* index_field) /* out: copied definition */ +{ + DBUG_ENTER("innobase_copy_index_field_def"); + DBUG_ASSERT(field != NULL); + DBUG_ASSERT(index_field != NULL); + + index_field->field_name = field->name; + index_field->prefix_len = field->prefix_len; + + DBUG_VOID_RETURN; +} + +/*********************************************************************** +Copy index definition for the index */ +static +void +innobase_copy_index_def( +/*====================*/ + const dict_index_t* index, /* in: index definition to copy */ + merge_index_def_t* new_index,/* out: Index definition */ + mem_heap_t* heap) /* in: heap where allocated */ +{ + ulint n_fields; + ulint i; + + DBUG_ENTER("innobase_copy_index_def"); + + /* Note that we take only those fields that user defined to be + in the index. In the internal representation more colums were + added and those colums are not copied .*/ + + n_fields = index->n_user_defined_cols; + + new_index->fields = (merge_index_field_t*) mem_heap_alloc( + heap, n_fields * sizeof *new_index->fields); + + /* When adding a PRIMARY KEY, we may convert a previous + clustered index to a secondary index (UNIQUE NOT NULL). */ + new_index->ind_type = index->type & ~DICT_CLUSTERED; + new_index->n_fields = n_fields; + new_index->name = index->name; + + for (i = 0; i < n_fields; i++) { + innobase_copy_index_field_def(&index->fields[i], + &new_index->fields[i]); + } + + DBUG_VOID_RETURN; +} + +/*********************************************************************** +Create an index table where indexes are ordered as follows: + +IF a new primary key is defined for the table THEN + + 1) New primary key + 2) Original secondary indexes + 3) New secondary indexes + +ELSE + + 1) All new indexes in the order they arrive from MySQL + +ENDIF + +*/ +static +merge_index_def_t* +innobase_create_key_def( +/*====================*/ + /* out: key definitions or NULL */ + trx_t* trx, /* in: trx */ + const dict_table_t*table, /* in: table definition */ + mem_heap_t* heap, /* in: heap where space for key + definitions are allocated */ + KEY* key_info, /* in: Indexes to be created */ + ulint& n_keys) /* in/out: Number of indexes to + be created */ +{ + ulint i = 0; + merge_index_def_t* indexdef; + merge_index_def_t* indexdefs; + bool new_primary; + + DBUG_ENTER("innobase_create_key_def"); + + indexdef = indexdefs = (merge_index_def_t*) + mem_heap_alloc(heap, sizeof *indexdef + * (n_keys + UT_LIST_GET_LEN(table->indexes))); + + /* If there is a primary key, it is always the first index + defined for the table. */ + + new_primary = !my_strcasecmp(system_charset_info, + key_info->name, "PRIMARY"); + + /* If there is a UNIQUE INDEX consisting entirely of NOT NULL + columns, MySQL will treat it as a PRIMARY KEY unless the + table already has one. */ + + if (!new_primary && (key_info->flags & HA_NOSAME) + && row_table_got_default_clust_index(table)) { + uint key_part = key_info->key_parts; + + new_primary = TRUE; + + while (key_part--) { + if (key_info->key_part[key_part].key_type + & FIELDFLAG_MAYBE_NULL) { + new_primary = FALSE; + break; + } + } + } + + if (new_primary) { + const dict_index_t* index; + + /* Create the PRIMARY key index definition */ + innobase_create_index_def(&key_info[i++], TRUE, TRUE, + indexdef++, heap); + + row_mysql_lock_data_dictionary(trx); + + index = dict_table_get_first_index(table); + + /* Copy the index definitions of the old table. Skip + the old clustered index if it is a generated clustered + index or a PRIMARY KEY. If the clustered index is a + UNIQUE INDEX, it must be converted to a secondary index. */ + + if (dict_index_get_nth_col(index, 0)->mtype == DATA_SYS + || !my_strcasecmp(system_charset_info, + index->name, "PRIMARY")) { + index = dict_table_get_next_index(index); + } + + while (index) { + innobase_copy_index_def(index, indexdef++, heap); + index = dict_table_get_next_index(index); + } + + row_mysql_unlock_data_dictionary(trx); + } + + /* Create definitions for added secondary indexes. */ + + while (i < n_keys) { + innobase_create_index_def(&key_info[i++], new_primary, FALSE, + indexdef++, heap); + } + + n_keys = indexdef - indexdefs; + + DBUG_RETURN(indexdefs); +} + +/*********************************************************************** +Create a temporary tablename using query id, thread id, and id */ +static +char* +innobase_create_temporary_tablename( +/*================================*/ + /* out: temporary tablename */ + mem_heap_t* heap, /* in: memory heap */ + char id, /* in: identifier [0-9a-zA-Z] */ + const char* table_name) /* in: table name */ +{ + char* name; + ulint len; + static const char suffix[] = "@0023 "; /* "# " */ + + len = strlen(table_name); + + name = (char*) mem_heap_alloc(heap, len + sizeof suffix); + memcpy(name, table_name, len); + memcpy(name + len, suffix, sizeof suffix); + name[len + (sizeof suffix - 2)] = id; + + return(name); +} + +/*********************************************************************** +Create indexes. */ +UNIV_INTERN +int +ha_innobase::add_index( +/*===================*/ + /* out: 0 or error number */ + TABLE* table, /* in: Table where indexes are created */ + KEY* key_info, /* in: Indexes to be created */ + uint num_of_keys) /* in: Number of indexes to be created */ +{ + dict_index_t** index; /* Index to be created */ + dict_table_t* innodb_table; /* InnoDB table in dictionary */ + dict_table_t* indexed_table; /* Table where indexes are created */ + merge_index_def_t* index_defs; /* Index definitions */ + mem_heap_t* heap; /* Heap for index definitions */ + trx_t* trx; /* Transaction */ + ulint num_of_idx; + ulint num_created = 0; + ibool dict_locked = FALSE; + ulint new_primary; + ulint error; + + DBUG_ENTER("ha_innobase::add_index"); + ut_a(table); + ut_a(key_info); + ut_a(num_of_keys); + + if (srv_created_new_raw || srv_force_recovery) { + DBUG_RETURN(HA_ERR_WRONG_COMMAND); + } + + update_thd(); + + heap = mem_heap_create(1024); + + /* In case MySQL calls this in the middle of a SELECT query, release + possible adaptive hash latch to avoid deadlocks of threads. */ + trx_search_latch_release_if_reserved(prebuilt->trx); + + /* Create a background transaction for the operations on + the data dictionary tables. */ + trx = innobase_trx_allocate(user_thd); + trx_start_if_not_started(trx); + + innodb_table = indexed_table + = dict_table_get(prebuilt->table->name, FALSE); + + /* Check that index keys are sensible */ + + error = innobase_check_index_keys(key_info, num_of_keys); + + if (UNIV_UNLIKELY(error)) { +err_exit: + mem_heap_free(heap); + trx_general_rollback_for_mysql(trx, FALSE, NULL); + trx_free_for_mysql(trx); + trx_commit_for_mysql(prebuilt->trx); + DBUG_RETURN(error); + } + + /* Create table containing all indexes to be built in this + alter table add index so that they are in the correct order + in the table. */ + + num_of_idx = num_of_keys; + + index_defs = innobase_create_key_def( + trx, innodb_table, heap, key_info, num_of_idx); + + new_primary = DICT_CLUSTERED & index_defs[0].ind_type; + + /* Allocate memory for dictionary index definitions */ + + index = (dict_index_t**) mem_heap_alloc( + heap, num_of_idx * sizeof *index); + + /* Flag this transaction as a dictionary operation, so that + the data dictionary will be locked in crash recovery. */ + trx_set_dict_operation(trx, TRX_DICT_OP_INDEX); + + /* Acquire a lock on the table before creating any indexes. */ + error = row_merge_lock_table(prebuilt->trx, innodb_table, + new_primary ? LOCK_X : LOCK_S); + + if (UNIV_UNLIKELY(error != DB_SUCCESS)) { + + goto error_handling; + } + + /* Latch the InnoDB data dictionary exclusively so that no deadlocks + or lock waits can happen in it during an index create operation. */ + + row_mysql_lock_data_dictionary(trx); + dict_locked = TRUE; + + /* If a new primary key is defined for the table we need + to drop the original table and rebuild all indexes. */ + + if (UNIV_UNLIKELY(new_primary)) { + /* This transaction should be the only one + operating on the table. */ + ut_a(innodb_table->n_mysql_handles_opened == 1); + + char* new_table_name = innobase_create_temporary_tablename( + heap, '1', innodb_table->name); + + /* Clone the table. */ + trx_set_dict_operation(trx, TRX_DICT_OP_TABLE); + indexed_table = row_merge_create_temporary_table( + new_table_name, index_defs, innodb_table, trx); + + if (!indexed_table) { + + switch (trx->error_state) { + case DB_TABLESPACE_ALREADY_EXISTS: + case DB_DUPLICATE_KEY: + innobase_convert_tablename(new_table_name); + my_error(HA_ERR_TABLE_EXIST, MYF(0), + new_table_name); + error = HA_ERR_TABLE_EXIST; + break; + default: + error = convert_error_code_to_mysql( + trx->error_state, innodb_table->flags, + user_thd); + } + + row_mysql_unlock_data_dictionary(trx); + goto err_exit; + } + + trx->table_id = indexed_table->id; + } + + /* Create the indexes in SYS_INDEXES and load into dictionary. */ + + for (ulint i = 0; i < num_of_idx; i++) { + + index[i] = row_merge_create_index(trx, indexed_table, + &index_defs[i]); + + if (!index[i]) { + error = trx->error_state; + goto error_handling; + } + + num_created++; + } + + ut_ad(error == DB_SUCCESS); + + /* Commit the data dictionary transaction in order to release + the table locks on the system tables. Unfortunately, this + means that if MySQL crashes while creating a new primary key + inside row_merge_build_indexes(), indexed_table will not be + dropped on crash recovery. Thus, it will become orphaned. */ + trx_commit_for_mysql(trx); + + row_mysql_unlock_data_dictionary(trx); + dict_locked = FALSE; + + ut_a(trx->n_active_thrs == 0); + ut_a(UT_LIST_GET_LEN(trx->signals) == 0); + + if (UNIV_UNLIKELY(new_primary)) { + /* A primary key is to be built. Acquire an exclusive + table lock also on the table that is being created. */ + ut_ad(indexed_table != innodb_table); + + error = row_merge_lock_table(prebuilt->trx, indexed_table, + LOCK_X); + + if (UNIV_UNLIKELY(error != DB_SUCCESS)) { + + goto error_handling; + } + } + + /* Read the clustered index of the table and build indexes + based on this information using temporary files and merge sort. */ + error = row_merge_build_indexes(prebuilt->trx, + innodb_table, indexed_table, + index, num_of_idx, table); + +error_handling: +#ifdef UNIV_DEBUG + /* TODO: At the moment we can't handle the following statement + in our debugging code below: + + alter table t drop index b, add index (b); + + The fix will have to parse the SQL and note that the index + being added has the same name as the the one being dropped and + ignore that in the dup index check.*/ + //dict_table_check_for_dup_indexes(prebuilt->table); +#endif + + /* After an error, remove all those index definitions from the + dictionary which were defined. */ + + switch (error) { + const char* old_name; + char* tmp_name; + case DB_SUCCESS: + ut_a(!dict_locked); + row_mysql_lock_data_dictionary(trx); + dict_locked = TRUE; + + if (!new_primary) { + error = row_merge_rename_indexes(trx, indexed_table); + + if (error != DB_SUCCESS) { + row_merge_drop_indexes(trx, indexed_table, + index, num_created); + } + + goto convert_error; + } + + /* If a new primary key was defined for the table and + there was no error at this point, we can now rename + the old table as a temporary table, rename the new + temporary table as the old table and drop the old table. */ + old_name = innodb_table->name; + tmp_name = innobase_create_temporary_tablename(heap, '2', + old_name); + + error = row_merge_rename_tables(innodb_table, indexed_table, + tmp_name, trx); + + if (error != DB_SUCCESS) { + + row_merge_drop_table(trx, indexed_table); + + switch (error) { + case DB_TABLESPACE_ALREADY_EXISTS: + case DB_DUPLICATE_KEY: + innobase_convert_tablename(tmp_name); + my_error(HA_ERR_TABLE_EXIST, MYF(0), tmp_name); + error = HA_ERR_TABLE_EXIST; + break; + default: + goto convert_error; + } + break; + } + + trx_commit_for_mysql(prebuilt->trx); + row_prebuilt_free(prebuilt, TRUE); + prebuilt = row_create_prebuilt(indexed_table); + + indexed_table->n_mysql_handles_opened++; + + error = row_merge_drop_table(trx, innodb_table); + goto convert_error; + + case DB_TOO_BIG_RECORD: + my_error(HA_ERR_TO_BIG_ROW, MYF(0)); + goto error; + case DB_PRIMARY_KEY_IS_NULL: + my_error(ER_PRIMARY_CANT_HAVE_NULL, MYF(0)); + /* fall through */ + case DB_DUPLICATE_KEY: +error: + prebuilt->trx->error_info = NULL; + /* fall through */ + default: + if (new_primary) { + row_merge_drop_table(trx, indexed_table); + } else { + if (!dict_locked) { + row_mysql_lock_data_dictionary(trx); + dict_locked = TRUE; + } + + row_merge_drop_indexes(trx, indexed_table, + index, num_created); + } + +convert_error: + error = convert_error_code_to_mysql(error, + innodb_table->flags, + user_thd); + } + + mem_heap_free(heap); + trx_commit_for_mysql(trx); + if (prebuilt->trx) { + trx_commit_for_mysql(prebuilt->trx); + } + + if (dict_locked) { + row_mysql_unlock_data_dictionary(trx); + } + + trx_free_for_mysql(trx); + + /* There might be work for utility threads.*/ + srv_active_wake_master_thread(); + + DBUG_RETURN(error); +} + +/*********************************************************************** +Prepare to drop some indexes of a table. */ +UNIV_INTERN +int +ha_innobase::prepare_drop_index( +/*============================*/ + /* out: 0 or error number */ + TABLE* table, /* in: Table where indexes are dropped */ + uint* key_num, /* in: Key nums to be dropped */ + uint num_of_keys) /* in: Number of keys to be dropped */ +{ + trx_t* trx; + int err = 0; + uint n_key; + + DBUG_ENTER("ha_innobase::prepare_drop_index"); + ut_ad(table); + ut_ad(key_num); + ut_ad(num_of_keys); + if (srv_created_new_raw || srv_force_recovery) { + DBUG_RETURN(HA_ERR_WRONG_COMMAND); + } + + update_thd(); + + trx_search_latch_release_if_reserved(prebuilt->trx); + trx = prebuilt->trx; + + /* Test and mark all the indexes to be dropped */ + + row_mysql_lock_data_dictionary(trx); + + /* Check that none of the indexes have previously been flagged + for deletion. */ + { + const dict_index_t* index + = dict_table_get_first_index(prebuilt->table); + do { + ut_a(!index->to_be_dropped); + index = dict_table_get_next_index(index); + } while (index); + } + + for (n_key = 0; n_key < num_of_keys; n_key++) { + const KEY* key; + dict_index_t* index; + + key = table->key_info + key_num[n_key]; + index = dict_table_get_index_on_name_and_min_id( + prebuilt->table, key->name); + + if (!index) { + sql_print_error("InnoDB could not find key n:o %u " + "with name %s for table %s", + key_num[n_key], + key ? key->name : "NULL", + prebuilt->table->name); + + err = HA_ERR_KEY_NOT_FOUND; + goto func_exit; + } + + /* Refuse to drop the clustered index. It would be + better to automatically generate a clustered index, + but mysql_alter_table() will call this method only + after ha_innobase::add_index(). */ + + if (dict_index_is_clust(index)) { + my_error(ER_REQUIRES_PRIMARY_KEY, MYF(0)); + err = -1; + goto func_exit; + } + + index->to_be_dropped = TRUE; + } + + /* If FOREIGN_KEY_CHECK = 1 you may not drop an index defined + for a foreign key constraint because InnoDB requires that both + tables contain indexes for the constraint. Note that CREATE + INDEX id ON table does a CREATE INDEX and DROP INDEX, and we + can ignore here foreign keys because a new index for the + foreign key has already been created. + + We check for the foreign key constraints after marking the + candidate indexes for deletion, because when we check for an + equivalent foreign index we don't want to select an index that + is later deleted. */ + + if (trx->check_foreigns + && thd_sql_command(user_thd) != SQLCOM_CREATE_INDEX) { + dict_index_t* index; + + for (index = dict_table_get_first_index(prebuilt->table); + index; + index = dict_table_get_next_index(index)) { + dict_foreign_t* foreign; + + if (!index->to_be_dropped) { + + continue; + } + + /* Check if the index is referenced. */ + foreign = dict_table_get_referenced_constraint( + prebuilt->table, index); + + if (foreign) { +index_needed: + trx_set_detailed_error( + trx, + "Index needed in foreign key " + "constraint"); + + trx->error_info = index; + + err = HA_ERR_DROP_INDEX_FK; + break; + } else { + /* Check if this index references some + other table */ + foreign = dict_table_get_foreign_constraint( + prebuilt->table, index); + + if (foreign) { + ut_a(foreign->foreign_index == index); + + /* Search for an equivalent index that + the foreign key constraint could use + if this index were to be deleted. */ + if (!dict_foreign_find_equiv_index( + foreign)) { + + goto index_needed; + } + } + } + } + } else if (thd_sql_command(user_thd) == SQLCOM_CREATE_INDEX) { + /* This is a drop of a foreign key constraint index that + was created by MySQL when the constraint was added. MySQL + does this when the user creates an index explicitly which + can be used in place of the automatically generated index. */ + + dict_index_t* index; + + for (index = dict_table_get_first_index(prebuilt->table); + index; + index = dict_table_get_next_index(index)) { + dict_foreign_t* foreign; + + if (!index->to_be_dropped) { + + continue; + } + + /* Check if this index references some other table */ + foreign = dict_table_get_foreign_constraint( + prebuilt->table, index); + + if (foreign == NULL) { + + continue; + } + + ut_a(foreign->foreign_index == index); + + /* Search for an equivalent index that the + foreign key constraint could use if this index + were to be deleted. */ + + if (!dict_foreign_find_equiv_index(foreign)) { + trx_set_detailed_error( + trx, + "Index needed in foreign key " + "constraint"); + + trx->error_info = foreign->foreign_index; + + err = HA_ERR_DROP_INDEX_FK; + break; + } + } + } + +func_exit: + if (err) { + /* Undo our changes since there was some sort of error. */ + dict_index_t* index + = dict_table_get_first_index(prebuilt->table); + + do { + index->to_be_dropped = FALSE; + index = dict_table_get_next_index(index); + } while (index); + } + + row_mysql_unlock_data_dictionary(trx); + + DBUG_RETURN(err); +} + +/*********************************************************************** +Drop the indexes that were passed to a successful prepare_drop_index(). */ +UNIV_INTERN +int +ha_innobase::final_drop_index( +/*==========================*/ + /* out: 0 or error number */ + TABLE* table) /* in: Table where indexes are dropped */ +{ + dict_index_t* index; /* Index to be dropped */ + trx_t* trx; /* Transaction */ + int err; + + DBUG_ENTER("ha_innobase::final_drop_index"); + ut_ad(table); + + if (srv_created_new_raw || srv_force_recovery) { + DBUG_RETURN(HA_ERR_WRONG_COMMAND); + } + + update_thd(); + + trx_search_latch_release_if_reserved(prebuilt->trx); + + /* Create a background transaction for the operations on + the data dictionary tables. */ + trx = innobase_trx_allocate(user_thd); + trx_start_if_not_started(trx); + + /* Flag this transaction as a dictionary operation, so that + the data dictionary will be locked in crash recovery. */ + trx_set_dict_operation(trx, TRX_DICT_OP_INDEX); + + /* Lock the table exclusively, to ensure that no active + transaction depends on an index that is being dropped. */ + err = convert_error_code_to_mysql( + row_merge_lock_table(prebuilt->trx, prebuilt->table, LOCK_X), + prebuilt->table->flags, user_thd); + + row_mysql_lock_data_dictionary(trx); + + if (UNIV_UNLIKELY(err)) { + + /* Unmark the indexes to be dropped. */ + for (index = dict_table_get_first_index(prebuilt->table); + index; index = dict_table_get_next_index(index)) { + + index->to_be_dropped = FALSE; + } + + goto func_exit; + } + + /* Drop indexes marked to be dropped */ + + index = dict_table_get_first_index(prebuilt->table); + + while (index) { + dict_index_t* next_index; + + next_index = dict_table_get_next_index(index); + + if (index->to_be_dropped) { + + row_merge_drop_index(index, prebuilt->table, trx); + } + + index = next_index; + } + + /* Check that all flagged indexes were dropped. */ + for (index = dict_table_get_first_index(prebuilt->table); + index; index = dict_table_get_next_index(index)) { + ut_a(!index->to_be_dropped); + } + +#ifdef UNIV_DEBUG + dict_table_check_for_dup_indexes(prebuilt->table); +#endif + +func_exit: + trx_commit_for_mysql(trx); + trx_commit_for_mysql(prebuilt->trx); + row_mysql_unlock_data_dictionary(trx); + + /* Flush the log to reduce probability that the .frm files and + the InnoDB data dictionary get out-of-sync if the user runs + with innodb_flush_log_at_trx_commit = 0 */ + + log_buffer_flush_to_disk(); + + trx_free_for_mysql(trx); + + /* Tell the InnoDB server that there might be work for + utility threads: */ + + srv_active_wake_master_thread(); + + DBUG_RETURN(err); +} === added file 'storage/xtradb/handler/handler0vars.h' --- a/storage/xtradb/handler/handler0vars.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/handler/handler0vars.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,68 @@ +/***************************************************************************** + +Copyright (c) 2008, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/*********************************************************************** +This file contains accessor functions for dynamic plugin on Windows. +***********************************************************************/ + +#if defined __WIN__ && defined MYSQL_DYNAMIC_PLUGIN +/*********************************************************************** +This is a list of externals that can not be resolved by delay loading. +They have to be resolved indirectly via their addresses in the .map file. +All of them are external variables. */ +extern CHARSET_INFO* wdl_my_charset_bin; +extern CHARSET_INFO* wdl_my_charset_latin1; +extern CHARSET_INFO* wdl_my_charset_filename; +extern CHARSET_INFO** wdl_system_charset_info; +extern CHARSET_INFO** wdl_default_charset_info; +extern CHARSET_INFO** wdl_all_charsets; +extern system_variables* wdl_global_system_variables; +extern char* wdl_mysql_real_data_home; +extern char** wdl_mysql_data_home; +extern char** wdl_tx_isolation_names; +extern char** wdl_binlog_format_names; +extern char* wdl_reg_ext; +extern pthread_mutex_t* wdl_LOCK_thread_count; +extern key_map* wdl_key_map_full; +extern MY_TMPDIR* wdl_mysql_tmpdir_list; +extern bool* wdl_mysqld_embedded; +extern uint* wdl_lower_case_table_names; +extern ulong* wdl_specialflag; +extern int* wdl_my_umask; + +#define my_charset_bin (*wdl_my_charset_bin) +#define my_charset_latin1 (*wdl_my_charset_latin1) +#define my_charset_filename (*wdl_my_charset_filename) +#define system_charset_info (*wdl_system_charset_info) +#define default_charset_info (*wdl_default_charset_info) +#define all_charsets (wdl_all_charsets) +#define global_system_variables (*wdl_global_system_variables) +#define mysql_real_data_home (wdl_mysql_real_data_home) +#define mysql_data_home (*wdl_mysql_data_home) +#define tx_isolation_names (wdl_tx_isolation_names) +#define binlog_format_names (wdl_binlog_format_names) +#define reg_ext (wdl_reg_ext) +#define LOCK_thread_count (*wdl_LOCK_thread_count) +#define key_map_full (*wdl_key_map_full) +#define mysql_tmpdir_list (*wdl_mysql_tmpdir_list) +#define mysqld_embedded (*wdl_mysqld_embedded) +#define lower_case_table_names (*wdl_lower_case_table_names) +#define specialflag (*wdl_specialflag) +#define my_umask (*wdl_my_umask) + +#endif === added file 'storage/xtradb/handler/i_s.cc' --- a/storage/xtradb/handler/i_s.cc 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/handler/i_s.cc 2009-05-04 02:45:47 +0000 @@ -0,0 +1,2655 @@ +/***************************************************************************** + +Copyright (c) 2007, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +InnoDB INFORMATION SCHEMA tables interface to MySQL. + +Created July 18, 2007 Vasil Dimov +*******************************************************/ + +#include <mysql_priv.h> +#include <mysqld_error.h> + +#include <m_ctype.h> +#include <hash.h> +#include <myisampack.h> +#include <mysys_err.h> +#include <my_sys.h> +#include "i_s.h" +#include "innodb_patch_info.h" +#include <mysql/plugin.h> + +extern "C" { +#include "trx0i_s.h" +#include "trx0trx.h" /* for TRX_QUE_STATE_STR_MAX_LEN */ +#include "buf0buddy.h" /* for i_s_cmpmem */ +#include "buf0buf.h" /* for buf_pool and PAGE_ZIP_MIN_SIZE */ +#include "ha_prototypes.h" /* for innobase_convert_name() */ +#include "srv0start.h" /* for srv_was_started */ +#include "btr0btr.h" /* for btr_page_get_index_id */ +#include "dict0dict.h" /* for dict_index_get_if_in_cache */ +#include "trx0rseg.h" /* for trx_rseg_struct */ +#include "trx0sys.h" /* for trx_sys */ +/* from buf0buf.c */ +struct buf_chunk_struct{ + ulint mem_size; /* allocated size of the chunk */ + ulint size; /* size of frames[] and blocks[] */ + void* mem; /* pointer to the memory area which + was allocated for the frames */ + buf_block_t* blocks; /* array of buffer control blocks */ +}; +} +#include "handler0vars.h" + +static const char plugin_author[] = "Innobase Oy"; + +#define OK(expr) \ + if ((expr) != 0) { \ + DBUG_RETURN(1); \ + } + +#define RETURN_IF_INNODB_NOT_STARTED(plugin_name) \ +do { \ + if (!srv_was_started) { \ + push_warning_printf(thd, MYSQL_ERROR::WARN_LEVEL_WARN, \ + ER_CANT_FIND_SYSTEM_REC, \ + "InnoDB: SELECTing from " \ + "INFORMATION_SCHEMA.%s but " \ + "the InnoDB storage engine " \ + "is not installed", plugin_name); \ + DBUG_RETURN(0); \ + } \ +} while (0) + +#if !defined __STRICT_ANSI__ && defined __GNUC__ && (__GNUC__) > 2 && !defined __INTEL_COMPILER +#define STRUCT_FLD(name, value) name: value +#else +#define STRUCT_FLD(name, value) value +#endif + +static const ST_FIELD_INFO END_OF_ST_FIELD_INFO = + {STRUCT_FLD(field_name, NULL), + STRUCT_FLD(field_length, 0), + STRUCT_FLD(field_type, MYSQL_TYPE_NULL), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, 0), + STRUCT_FLD(old_name, ""), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}; + +/* +Use the following types mapping: + +C type ST_FIELD_INFO::field_type +--------------------------------- +long MYSQL_TYPE_LONGLONG +(field_length=MY_INT64_NUM_DECIMAL_DIGITS) + +long unsigned MYSQL_TYPE_LONGLONG +(field_length=MY_INT64_NUM_DECIMAL_DIGITS, field_flags=MY_I_S_UNSIGNED) + +char* MYSQL_TYPE_STRING +(field_length=n) + +float MYSQL_TYPE_FLOAT +(field_length=0 is ignored) + +void* MYSQL_TYPE_LONGLONG +(field_length=MY_INT64_NUM_DECIMAL_DIGITS, field_flags=MY_I_S_UNSIGNED) + +boolean (if else) MYSQL_TYPE_LONG +(field_length=1) + +time_t MYSQL_TYPE_DATETIME +(field_length=0 ignored) +--------------------------------- +*/ + +/* XXX these are defined in mysql_priv.h inside #ifdef MYSQL_SERVER */ +bool schema_table_store_record(THD *thd, TABLE *table); +void localtime_to_TIME(MYSQL_TIME *to, struct tm *from); +bool check_global_access(THD *thd, ulong want_access); + +/*********************************************************************** +Common function to fill any of the dynamic tables: +INFORMATION_SCHEMA.innodb_trx +INFORMATION_SCHEMA.innodb_locks +INFORMATION_SCHEMA.innodb_lock_waits */ +static +int +trx_i_s_common_fill_table( +/*======================*/ + /* out: 0 on success */ + THD* thd, /* in: thread */ + TABLE_LIST* tables, /* in/out: tables to fill */ + COND* cond); /* in: condition (not used) */ + +/*********************************************************************** +Unbind a dynamic INFORMATION_SCHEMA table. */ +static +int +i_s_common_deinit( +/*==============*/ + /* out: 0 on success */ + void* p); /* in/out: table schema object */ + +/*********************************************************************** +Auxiliary function to store time_t value in MYSQL_TYPE_DATETIME +field. */ +static +int +field_store_time_t( +/*===============*/ + /* out: 0 on success */ + Field* field, /* in/out: target field for storage */ + time_t time) /* in: value to store */ +{ + MYSQL_TIME my_time; + struct tm tm_time; + +#if 0 + /* use this if you are sure that `variables' and `time_zone' + are always initialized */ + thd->variables.time_zone->gmt_sec_to_TIME( + &my_time, (my_time_t) time); +#else + localtime_r(&time, &tm_time); + localtime_to_TIME(&my_time, &tm_time); + my_time.time_type = MYSQL_TIMESTAMP_DATETIME; +#endif + + return(field->store_time(&my_time, MYSQL_TIMESTAMP_DATETIME)); +} + +/*********************************************************************** +Auxiliary function to store char* value in MYSQL_TYPE_STRING field. */ +static +int +field_store_string( +/*===============*/ + /* out: 0 on success */ + Field* field, /* in/out: target field for storage */ + const char* str) /* in: NUL-terminated utf-8 string, + or NULL */ +{ + int ret; + + if (str != NULL) { + + ret = field->store(str, strlen(str), + system_charset_info); + field->set_notnull(); + } else { + + ret = 0; /* success */ + field->set_null(); + } + + return(ret); +} + +/*********************************************************************** +Auxiliary function to store ulint value in MYSQL_TYPE_LONGLONG field. +If the value is ULINT_UNDEFINED then the field it set to NULL. */ +static +int +field_store_ulint( +/*==============*/ + /* out: 0 on success */ + Field* field, /* in/out: target field for storage */ + ulint n) /* in: value to store */ +{ + int ret; + + if (n != ULINT_UNDEFINED) { + + ret = field->store(n); + field->set_notnull(); + } else { + + ret = 0; /* success */ + field->set_null(); + } + + return(ret); +} + +/* Fields of the dynamic table INFORMATION_SCHEMA.innodb_patches */ +static ST_FIELD_INFO innodb_patches_fields_info[] = +{ +#define IDX_PATCH_NAME 0 + {STRUCT_FLD(field_name, "name"), + STRUCT_FLD(field_length, 255), + STRUCT_FLD(field_type, MYSQL_TYPE_STRING), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, 0), + STRUCT_FLD(old_name, ""), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + +#define IDX_PATCH_DESCR 1 + {STRUCT_FLD(field_name, "description"), + STRUCT_FLD(field_length, 255), + STRUCT_FLD(field_type, MYSQL_TYPE_STRING), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, 0), + STRUCT_FLD(old_name, ""), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + +#define IDX_PATCH_COMMENT 2 + {STRUCT_FLD(field_name, "comment"), + STRUCT_FLD(field_length, 100), + STRUCT_FLD(field_type, MYSQL_TYPE_STRING), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, 0), + STRUCT_FLD(old_name, ""), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + +#define IDX_PATCH_LINK 3 + {STRUCT_FLD(field_name, "link"), + STRUCT_FLD(field_length, 255), + STRUCT_FLD(field_type, MYSQL_TYPE_STRING), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, 0), + STRUCT_FLD(old_name, ""), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + + END_OF_ST_FIELD_INFO +}; + +static struct st_mysql_information_schema i_s_info = +{ + MYSQL_INFORMATION_SCHEMA_INTERFACE_VERSION +}; + +/*********************************************************************** +Fill the dynamic table information_schema.innodb_patches */ +static +int +innodb_patches_fill( +/*=============*/ + /* out: 0 on success, 1 on failure */ + THD* thd, /* in: thread */ + TABLE_LIST* tables, /* in/out: tables to fill */ + COND* cond) /* in: condition (ignored) */ +{ + TABLE* table = (TABLE *) tables->table; + int status = 0; + int i; + Field** fields; + + + DBUG_ENTER("innodb_patches_fill"); + fields = table->field; + + /* deny access to non-superusers */ + if (check_global_access(thd, PROCESS_ACL)) { + + DBUG_RETURN(0); + } + + RETURN_IF_INNODB_NOT_STARTED(tables->schema_table_name); + + for (i = 0; innodb_enhancements[i].file; i++) { + + field_store_string(fields[0],innodb_enhancements[i].file); + field_store_string(fields[1],innodb_enhancements[i].name); + field_store_string(fields[2],innodb_enhancements[i].comment); + field_store_string(fields[3],innodb_enhancements[i].link); + + if (schema_table_store_record(thd, table)) { + status = 1; + break; + } + + } + + + DBUG_RETURN(status); +} + +/*********************************************************************** +Bind the dynamic table information_schema.innodb_patches. */ +static +int +innodb_patches_init( +/*=========*/ + /* out: 0 on success */ + void* p) /* in/out: table schema object */ +{ + DBUG_ENTER("innodb_patches_init"); + ST_SCHEMA_TABLE* schema = (ST_SCHEMA_TABLE*) p; + + schema->fields_info = innodb_patches_fields_info; + schema->fill_table = innodb_patches_fill; + + DBUG_RETURN(0); +} + + +UNIV_INTERN struct st_mysql_plugin i_s_innodb_patches = +{ + /* the plugin type (a MYSQL_XXX_PLUGIN value) */ + /* int */ + STRUCT_FLD(type, MYSQL_INFORMATION_SCHEMA_PLUGIN), + + /* pointer to type-specific plugin descriptor */ + /* void* */ + STRUCT_FLD(info, &i_s_info), + + /* plugin name */ + /* const char* */ + STRUCT_FLD(name, "XTRADB_ENHANCEMENTS"), + + /* plugin author (for SHOW PLUGINS) */ + /* const char* */ + STRUCT_FLD(author, "Percona"), + + /* general descriptive text (for SHOW PLUGINS) */ + /* const char* */ + STRUCT_FLD(descr, "Enhancements applied to InnoDB plugin"), + + /* the plugin license (PLUGIN_LICENSE_XXX) */ + /* int */ + STRUCT_FLD(license, PLUGIN_LICENSE_GPL), + + /* the function to invoke when plugin is loaded */ + /* int (*)(void*); */ + STRUCT_FLD(init, innodb_patches_init), + + /* the function to invoke when plugin is unloaded */ + /* int (*)(void*); */ + STRUCT_FLD(deinit, i_s_common_deinit), + + /* plugin version (for SHOW PLUGINS) */ + /* unsigned int */ + STRUCT_FLD(version, INNODB_VERSION_SHORT), + + /* struct st_mysql_show_var* */ + STRUCT_FLD(status_vars, NULL), + + /* struct st_mysql_sys_var** */ + STRUCT_FLD(system_vars, NULL), + + /* reserved for dependency checking */ + /* void* */ + STRUCT_FLD(__reserved1, NULL) +}; + + +static ST_FIELD_INFO i_s_innodb_buffer_pool_pages_fields_info[] = +{ + {STRUCT_FLD(field_name, "page_type"), + STRUCT_FLD(field_length, 64), + STRUCT_FLD(field_type, MYSQL_TYPE_STRING), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, MY_I_S_MAYBE_NULL), + STRUCT_FLD(old_name, ""), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + + {STRUCT_FLD(field_name, "space_id"), + STRUCT_FLD(field_length, MY_INT64_NUM_DECIMAL_DIGITS), + STRUCT_FLD(field_type, MYSQL_TYPE_LONGLONG), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, MY_I_S_UNSIGNED), + STRUCT_FLD(old_name, ""), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + + {STRUCT_FLD(field_name, "page_no"), + STRUCT_FLD(field_length, MY_INT64_NUM_DECIMAL_DIGITS), + STRUCT_FLD(field_type, MYSQL_TYPE_LONGLONG), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, MY_I_S_UNSIGNED), + STRUCT_FLD(old_name, ""), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + + {STRUCT_FLD(field_name, "lru_position"), + STRUCT_FLD(field_length, MY_INT64_NUM_DECIMAL_DIGITS), + STRUCT_FLD(field_type, MYSQL_TYPE_LONGLONG), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, MY_I_S_UNSIGNED), + STRUCT_FLD(old_name, ""), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + + {STRUCT_FLD(field_name, "fix_count"), + STRUCT_FLD(field_length, MY_INT64_NUM_DECIMAL_DIGITS), + STRUCT_FLD(field_type, MYSQL_TYPE_LONGLONG), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, MY_I_S_UNSIGNED), + STRUCT_FLD(old_name, ""), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + + {STRUCT_FLD(field_name, "flush_type"), + STRUCT_FLD(field_length, MY_INT64_NUM_DECIMAL_DIGITS), + STRUCT_FLD(field_type, MYSQL_TYPE_LONGLONG), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, MY_I_S_UNSIGNED), + STRUCT_FLD(old_name, ""), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + + END_OF_ST_FIELD_INFO +}; + +static ST_FIELD_INFO i_s_innodb_buffer_pool_pages_index_fields_info[] = +{ + {STRUCT_FLD(field_name, "schema_name"), + STRUCT_FLD(field_length, 64), + STRUCT_FLD(field_type, MYSQL_TYPE_STRING), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, MY_I_S_MAYBE_NULL), + STRUCT_FLD(old_name, ""), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + + {STRUCT_FLD(field_name, "table_name"), + STRUCT_FLD(field_length, 64), + STRUCT_FLD(field_type, MYSQL_TYPE_STRING), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, 0), + STRUCT_FLD(old_name, ""), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + + {STRUCT_FLD(field_name, "index_name"), + STRUCT_FLD(field_length, 64), + STRUCT_FLD(field_type, MYSQL_TYPE_STRING), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, 0), + STRUCT_FLD(old_name, ""), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + + {STRUCT_FLD(field_name, "space_id"), + STRUCT_FLD(field_length, MY_INT64_NUM_DECIMAL_DIGITS), + STRUCT_FLD(field_type, MYSQL_TYPE_LONGLONG), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, MY_I_S_UNSIGNED), + STRUCT_FLD(old_name, ""), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + + {STRUCT_FLD(field_name, "page_no"), + STRUCT_FLD(field_length, MY_INT64_NUM_DECIMAL_DIGITS), + STRUCT_FLD(field_type, MYSQL_TYPE_LONGLONG), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, MY_I_S_UNSIGNED), + STRUCT_FLD(old_name, ""), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + + {STRUCT_FLD(field_name, "n_recs"), + STRUCT_FLD(field_length, MY_INT64_NUM_DECIMAL_DIGITS), + STRUCT_FLD(field_type, MYSQL_TYPE_LONGLONG), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, MY_I_S_UNSIGNED), + STRUCT_FLD(old_name, ""), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + + {STRUCT_FLD(field_name, "data_size"), + STRUCT_FLD(field_length, MY_INT64_NUM_DECIMAL_DIGITS), + STRUCT_FLD(field_type, MYSQL_TYPE_LONGLONG), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, MY_I_S_UNSIGNED), + STRUCT_FLD(old_name, ""), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + + {STRUCT_FLD(field_name, "hashed"), + STRUCT_FLD(field_length, MY_INT64_NUM_DECIMAL_DIGITS), + STRUCT_FLD(field_type, MYSQL_TYPE_LONGLONG), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, MY_I_S_UNSIGNED), + STRUCT_FLD(old_name, ""), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + + {STRUCT_FLD(field_name, "accessed"), + STRUCT_FLD(field_length, MY_INT64_NUM_DECIMAL_DIGITS), + STRUCT_FLD(field_type, MYSQL_TYPE_LONGLONG), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, MY_I_S_UNSIGNED), + STRUCT_FLD(old_name, ""), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + + {STRUCT_FLD(field_name, "modified"), + STRUCT_FLD(field_length, MY_INT64_NUM_DECIMAL_DIGITS), + STRUCT_FLD(field_type, MYSQL_TYPE_LONGLONG), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, MY_I_S_UNSIGNED), + STRUCT_FLD(old_name, ""), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + + {STRUCT_FLD(field_name, "dirty"), + STRUCT_FLD(field_length, MY_INT64_NUM_DECIMAL_DIGITS), + STRUCT_FLD(field_type, MYSQL_TYPE_LONGLONG), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, MY_I_S_UNSIGNED), + STRUCT_FLD(old_name, ""), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + + {STRUCT_FLD(field_name, "old"), + STRUCT_FLD(field_length, MY_INT64_NUM_DECIMAL_DIGITS), + STRUCT_FLD(field_type, MYSQL_TYPE_LONGLONG), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, MY_I_S_UNSIGNED), + STRUCT_FLD(old_name, ""), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + + {STRUCT_FLD(field_name, "lru_position"), + STRUCT_FLD(field_length, MY_INT64_NUM_DECIMAL_DIGITS), + STRUCT_FLD(field_type, MYSQL_TYPE_LONGLONG), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, MY_I_S_UNSIGNED), + STRUCT_FLD(old_name, ""), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + + {STRUCT_FLD(field_name, "fix_count"), + STRUCT_FLD(field_length, MY_INT64_NUM_DECIMAL_DIGITS), + STRUCT_FLD(field_type, MYSQL_TYPE_LONGLONG), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, MY_I_S_UNSIGNED), + STRUCT_FLD(old_name, ""), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + + {STRUCT_FLD(field_name, "flush_type"), + STRUCT_FLD(field_length, MY_INT64_NUM_DECIMAL_DIGITS), + STRUCT_FLD(field_type, MYSQL_TYPE_LONGLONG), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, MY_I_S_UNSIGNED), + STRUCT_FLD(old_name, ""), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + + END_OF_ST_FIELD_INFO +}; + +static ST_FIELD_INFO i_s_innodb_buffer_pool_pages_blob_fields_info[] = +{ + {STRUCT_FLD(field_name, "space_id"), + STRUCT_FLD(field_length, MY_INT64_NUM_DECIMAL_DIGITS), + STRUCT_FLD(field_type, MYSQL_TYPE_LONGLONG), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, MY_I_S_UNSIGNED), + STRUCT_FLD(old_name, ""), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + + {STRUCT_FLD(field_name, "page_no"), + STRUCT_FLD(field_length, MY_INT64_NUM_DECIMAL_DIGITS), + STRUCT_FLD(field_type, MYSQL_TYPE_LONGLONG), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, MY_I_S_UNSIGNED), + STRUCT_FLD(old_name, ""), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + + {STRUCT_FLD(field_name, "compressed"), + STRUCT_FLD(field_length, MY_INT64_NUM_DECIMAL_DIGITS), + STRUCT_FLD(field_type, MYSQL_TYPE_LONGLONG), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, MY_I_S_UNSIGNED), + STRUCT_FLD(old_name, ""), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + + {STRUCT_FLD(field_name, "part_len"), + STRUCT_FLD(field_length, MY_INT64_NUM_DECIMAL_DIGITS), + STRUCT_FLD(field_type, MYSQL_TYPE_LONGLONG), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, MY_I_S_UNSIGNED), + STRUCT_FLD(old_name, ""), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + + {STRUCT_FLD(field_name, "next_page_no"), + STRUCT_FLD(field_length, MY_INT64_NUM_DECIMAL_DIGITS), + STRUCT_FLD(field_type, MYSQL_TYPE_LONGLONG), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, MY_I_S_UNSIGNED), + STRUCT_FLD(old_name, ""), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + + {STRUCT_FLD(field_name, "lru_position"), + STRUCT_FLD(field_length, MY_INT64_NUM_DECIMAL_DIGITS), + STRUCT_FLD(field_type, MYSQL_TYPE_LONGLONG), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, MY_I_S_UNSIGNED), + STRUCT_FLD(old_name, ""), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + + {STRUCT_FLD(field_name, "fix_count"), + STRUCT_FLD(field_length, MY_INT64_NUM_DECIMAL_DIGITS), + STRUCT_FLD(field_type, MYSQL_TYPE_LONGLONG), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, MY_I_S_UNSIGNED), + STRUCT_FLD(old_name, ""), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + + {STRUCT_FLD(field_name, "flush_type"), + STRUCT_FLD(field_length, MY_INT64_NUM_DECIMAL_DIGITS), + STRUCT_FLD(field_type, MYSQL_TYPE_LONGLONG), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, MY_I_S_UNSIGNED), + STRUCT_FLD(old_name, ""), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + + END_OF_ST_FIELD_INFO +}; + +/*********************************************************************** +Fill the dynamic table information_schema.innodb_buffer_pool_pages. */ +static +int +i_s_innodb_buffer_pool_pages_fill( +/*================*/ + /* out: 0 on success, 1 on failure */ + THD* thd, /* in: thread */ + TABLE_LIST* tables, /* in/out: tables to fill */ + COND* cond) /* in: condition (ignored) */ +{ + TABLE* table = (TABLE *) tables->table; + int status = 0; + + ulint n_chunks, n_blocks; + + buf_chunk_t* chunk; + + DBUG_ENTER("i_s_innodb_buffer_pool_pages_fill"); + + /* deny access to non-superusers */ + if (check_global_access(thd, PROCESS_ACL)) { + + DBUG_RETURN(0); + } + + RETURN_IF_INNODB_NOT_STARTED(tables->schema_table_name); + + buf_pool_mutex_enter(); + mutex_enter(&(dict_sys->mutex)); + + chunk = buf_pool->chunks; + + for (n_chunks = buf_pool->n_chunks; n_chunks--; chunk++) { + buf_block_t* block = chunk->blocks; + + for (n_blocks = chunk->size; n_blocks--; block++) { + const buf_frame_t* frame = block->frame; + + char page_type[64]; + + switch(fil_page_get_type(frame)) + { + case FIL_PAGE_INDEX: + strcpy(page_type, "index"); + break; + case FIL_PAGE_UNDO_LOG: + strcpy(page_type, "undo_log"); + break; + case FIL_PAGE_INODE: + strcpy(page_type, "inode"); + break; + case FIL_PAGE_IBUF_FREE_LIST: + strcpy(page_type, "ibuf_free_list"); + break; + case FIL_PAGE_TYPE_ALLOCATED: + strcpy(page_type, "allocated"); + break; + case FIL_PAGE_IBUF_BITMAP: + strcpy(page_type, "bitmap"); + break; + case FIL_PAGE_TYPE_SYS: + strcpy(page_type, "sys"); + break; + case FIL_PAGE_TYPE_TRX_SYS: + strcpy(page_type, "trx_sys"); + break; + case FIL_PAGE_TYPE_FSP_HDR: + strcpy(page_type, "fsp_hdr"); + break; + case FIL_PAGE_TYPE_XDES: + strcpy(page_type, "xdes"); + break; + case FIL_PAGE_TYPE_BLOB: + strcpy(page_type, "blob"); + break; + case FIL_PAGE_TYPE_ZBLOB: + strcpy(page_type, "zblob"); + break; + case FIL_PAGE_TYPE_ZBLOB2: + strcpy(page_type, "zblob2"); + break; + default: + sprintf(page_type, "unknown (type=%li)", fil_page_get_type(frame)); + } + + field_store_string(table->field[0], page_type); + table->field[1]->store(block->page.space); + table->field[2]->store(block->page.offset); + table->field[3]->store(block->page.LRU_position); + table->field[4]->store(block->page.buf_fix_count); + table->field[5]->store(block->page.flush_type); + + if (schema_table_store_record(thd, table)) { + status = 1; + break; + } + + } + } + + mutex_exit(&(dict_sys->mutex)); + buf_pool_mutex_exit(); + + DBUG_RETURN(status); +} + +/*********************************************************************** +Fill the dynamic table information_schema.innodb_buffer_pool_pages_index. */ +static +int +i_s_innodb_buffer_pool_pages_index_fill( +/*================*/ + /* out: 0 on success, 1 on failure */ + THD* thd, /* in: thread */ + TABLE_LIST* tables, /* in/out: tables to fill */ + COND* cond) /* in: condition (ignored) */ +{ + TABLE* table = (TABLE *) tables->table; + int status = 0; + + ulint n_chunks, n_blocks; + dict_index_t* index; + dulint index_id; + + char *p; + char db_name_raw[NAME_LEN*5+1], db_name[NAME_LEN+1]; + char table_name_raw[NAME_LEN*5+1], table_name[NAME_LEN+1]; + + buf_chunk_t* chunk; + + DBUG_ENTER("i_s_innodb_buffer_pool_pages_index_fill"); + + /* deny access to non-superusers */ + if (check_global_access(thd, PROCESS_ACL)) { + + DBUG_RETURN(0); + } + + RETURN_IF_INNODB_NOT_STARTED(tables->schema_table_name); + + buf_pool_mutex_enter(); + mutex_enter(&(dict_sys->mutex)); + + chunk = buf_pool->chunks; + + for (n_chunks = buf_pool->n_chunks; n_chunks--; chunk++) { + buf_block_t* block = chunk->blocks; + + for (n_blocks = chunk->size; n_blocks--; block++) { + const buf_frame_t* frame = block->frame; + + if (fil_page_get_type(frame) == FIL_PAGE_INDEX) { + index_id = btr_page_get_index_id(frame); + index = dict_index_get_if_in_cache_low(index_id); + if(index) + { + if((p = strchr(index->table_name, '/'))) + { + strncpy(db_name_raw, index->table_name, p-index->table_name); + db_name_raw[p-index->table_name] = 0; + filename_to_tablename(db_name_raw, db_name, sizeof(db_name)); + field_store_string(table->field[0], db_name); + p++; + } else { + field_store_string(table->field[0], NULL); + p = (char *)index->table_name; + } + strcpy(table_name_raw, p); + filename_to_tablename(table_name_raw, table_name, sizeof(table_name)); + field_store_string(table->field[1], table_name); + field_store_string(table->field[2], index->name); + + table->field[3]->store(block->page.space); + table->field[4]->store(block->page.offset); + table->field[5]->store(page_get_n_recs(frame)); + table->field[6]->store(page_get_data_size(frame)); + table->field[7]->store(block->is_hashed); + table->field[8]->store(block->page.accessed); + table->field[9]->store(block->page.newest_modification != 0); + table->field[10]->store(block->page.oldest_modification != 0); + table->field[11]->store(block->page.old); + table->field[12]->store(block->page.LRU_position); + table->field[13]->store(block->page.buf_fix_count); + table->field[14]->store(block->page.flush_type); + + if (schema_table_store_record(thd, table)) { + status = 1; + break; + } + } + } + } + } + + mutex_exit(&(dict_sys->mutex)); + buf_pool_mutex_exit(); + + DBUG_RETURN(status); +} + +/*********************************************************************** +Fill the dynamic table information_schema.innodb_buffer_pool_pages_index. */ +static +int +i_s_innodb_buffer_pool_pages_blob_fill( +/*================*/ + /* out: 0 on success, 1 on failure */ + THD* thd, /* in: thread */ + TABLE_LIST* tables, /* in/out: tables to fill */ + COND* cond) /* in: condition (ignored) */ +{ + TABLE* table = (TABLE *) tables->table; + int status = 0; + + ulint n_chunks, n_blocks; + buf_chunk_t* chunk; + page_zip_des_t* block_page_zip; + + ulint part_len; + ulint next_page_no; + + DBUG_ENTER("i_s_innodb_buffer_pool_pages_blob_fill"); + + /* deny access to non-superusers */ + if (check_global_access(thd, PROCESS_ACL)) { + + DBUG_RETURN(0); + } + + RETURN_IF_INNODB_NOT_STARTED(tables->schema_table_name); + + buf_pool_mutex_enter(); + mutex_enter(&(dict_sys->mutex)); + + chunk = buf_pool->chunks; + + for (n_chunks = buf_pool->n_chunks; n_chunks--; chunk++) { + buf_block_t* block = chunk->blocks; + block_page_zip = buf_block_get_page_zip(block); + + for (n_blocks = chunk->size; n_blocks--; block++) { + const buf_frame_t* frame = block->frame; + + if (fil_page_get_type(frame) == FIL_PAGE_TYPE_BLOB) { + + if (UNIV_LIKELY_NULL(block_page_zip)) { + part_len = 0; /* hmm, can't figure it out */ + + next_page_no = mach_read_from_4( + buf_block_get_frame(block) + + FIL_PAGE_NEXT); + } else { + part_len = mach_read_from_4( + buf_block_get_frame(block) + + FIL_PAGE_DATA + + 0 /*BTR_BLOB_HDR_PART_LEN*/); + + next_page_no = mach_read_from_4( + buf_block_get_frame(block) + + FIL_PAGE_DATA + + 4 /*BTR_BLOB_HDR_NEXT_PAGE_NO*/); + } + + table->field[0]->store(block->page.space); + table->field[1]->store(block->page.offset); + table->field[2]->store(block_page_zip != NULL); + table->field[3]->store(part_len); + + if(next_page_no == FIL_NULL) + { + table->field[4]->store(0); + } else { + table->field[4]->store(block->page.offset); + } + + table->field[5]->store(block->page.LRU_position); + table->field[6]->store(block->page.buf_fix_count); + table->field[7]->store(block->page.flush_type); + + if (schema_table_store_record(thd, table)) { + status = 1; + break; + } + + } + } + } + + mutex_exit(&(dict_sys->mutex)); + buf_pool_mutex_exit(); + + DBUG_RETURN(status); +} + +/*********************************************************************** +Bind the dynamic table information_schema.innodb_buffer_pool_pages. */ +static +int +i_s_innodb_buffer_pool_pages_init( +/*=========*/ + /* out: 0 on success */ + void* p) /* in/out: table schema object */ +{ + DBUG_ENTER("i_s_innodb_buffer_pool_pages_init"); + ST_SCHEMA_TABLE* schema = (ST_SCHEMA_TABLE*) p; + + schema->fields_info = i_s_innodb_buffer_pool_pages_fields_info; + schema->fill_table = i_s_innodb_buffer_pool_pages_fill; + + DBUG_RETURN(0); +} + +/*********************************************************************** +Bind the dynamic table information_schema.innodb_buffer_pool_pages. */ +static +int +i_s_innodb_buffer_pool_pages_index_init( +/*=========*/ + /* out: 0 on success */ + void* p) /* in/out: table schema object */ +{ + DBUG_ENTER("i_s_innodb_buffer_pool_pages_index_init"); + ST_SCHEMA_TABLE* schema = (ST_SCHEMA_TABLE*) p; + + schema->fields_info = i_s_innodb_buffer_pool_pages_index_fields_info; + schema->fill_table = i_s_innodb_buffer_pool_pages_index_fill; + + DBUG_RETURN(0); +} + +/*********************************************************************** +Bind the dynamic table information_schema.innodb_buffer_pool_pages. */ +static +int +i_s_innodb_buffer_pool_pages_blob_init( +/*=========*/ + /* out: 0 on success */ + void* p) /* in/out: table schema object */ +{ + DBUG_ENTER("i_s_innodb_buffer_pool_pages_blob_init"); + ST_SCHEMA_TABLE* schema = (ST_SCHEMA_TABLE*) p; + + schema->fields_info = i_s_innodb_buffer_pool_pages_blob_fields_info; + schema->fill_table = i_s_innodb_buffer_pool_pages_blob_fill; + + DBUG_RETURN(0); +} + + +UNIV_INTERN struct st_mysql_plugin i_s_innodb_buffer_pool_pages = +{ + /* the plugin type (a MYSQL_XXX_PLUGIN value) */ + /* int */ + STRUCT_FLD(type, MYSQL_INFORMATION_SCHEMA_PLUGIN), + + /* pointer to type-specific plugin descriptor */ + /* void* */ + STRUCT_FLD(info, &i_s_info), + + /* plugin name */ + /* const char* */ + STRUCT_FLD(name, "INNODB_BUFFER_POOL_PAGES"), + + /* plugin author (for SHOW PLUGINS) */ + /* const char* */ + STRUCT_FLD(author, plugin_author), + + /* general descriptive text (for SHOW PLUGINS) */ + /* const char* */ + STRUCT_FLD(descr, "InnoDB buffer pool pages"), + + /* the plugin license (PLUGIN_LICENSE_XXX) */ + /* int */ + STRUCT_FLD(license, PLUGIN_LICENSE_GPL), + + /* the function to invoke when plugin is loaded */ + /* int (*)(void*); */ + STRUCT_FLD(init, i_s_innodb_buffer_pool_pages_init), + + /* the function to invoke when plugin is unloaded */ + /* int (*)(void*); */ + STRUCT_FLD(deinit, i_s_common_deinit), + + /* plugin version (for SHOW PLUGINS) */ + /* unsigned int */ + STRUCT_FLD(version, 0x0100 /* 1.0 */), + + /* struct st_mysql_show_var* */ + STRUCT_FLD(status_vars, NULL), + + /* struct st_mysql_sys_var** */ + STRUCT_FLD(system_vars, NULL), + + /* reserved for dependency checking */ + /* void* */ + STRUCT_FLD(__reserved1, NULL) +}; + +UNIV_INTERN struct st_mysql_plugin i_s_innodb_buffer_pool_pages_index = +{ + /* the plugin type (a MYSQL_XXX_PLUGIN value) */ + /* int */ + STRUCT_FLD(type, MYSQL_INFORMATION_SCHEMA_PLUGIN), + + /* pointer to type-specific plugin descriptor */ + /* void* */ + STRUCT_FLD(info, &i_s_info), + + /* plugin name */ + /* const char* */ + STRUCT_FLD(name, "INNODB_BUFFER_POOL_PAGES_INDEX"), + + /* plugin author (for SHOW PLUGINS) */ + /* const char* */ + STRUCT_FLD(author, plugin_author), + + /* general descriptive text (for SHOW PLUGINS) */ + /* const char* */ + STRUCT_FLD(descr, "InnoDB buffer pool index pages"), + + /* the plugin license (PLUGIN_LICENSE_XXX) */ + /* int */ + STRUCT_FLD(license, PLUGIN_LICENSE_GPL), + + /* the function to invoke when plugin is loaded */ + /* int (*)(void*); */ + STRUCT_FLD(init, i_s_innodb_buffer_pool_pages_index_init), + + /* the function to invoke when plugin is unloaded */ + /* int (*)(void*); */ + STRUCT_FLD(deinit, i_s_common_deinit), + + /* plugin version (for SHOW PLUGINS) */ + /* unsigned int */ + STRUCT_FLD(version, 0x0100 /* 1.0 */), + + /* struct st_mysql_show_var* */ + STRUCT_FLD(status_vars, NULL), + + /* struct st_mysql_sys_var** */ + STRUCT_FLD(system_vars, NULL), + + /* reserved for dependency checking */ + /* void* */ + STRUCT_FLD(__reserved1, NULL) +}; + +UNIV_INTERN struct st_mysql_plugin i_s_innodb_buffer_pool_pages_blob = +{ + /* the plugin type (a MYSQL_XXX_PLUGIN value) */ + /* int */ + STRUCT_FLD(type, MYSQL_INFORMATION_SCHEMA_PLUGIN), + + /* pointer to type-specific plugin descriptor */ + /* void* */ + STRUCT_FLD(info, &i_s_info), + + /* plugin name */ + /* const char* */ + STRUCT_FLD(name, "INNODB_BUFFER_POOL_PAGES_BLOB"), + + /* plugin author (for SHOW PLUGINS) */ + /* const char* */ + STRUCT_FLD(author, plugin_author), + + /* general descriptive text (for SHOW PLUGINS) */ + /* const char* */ + STRUCT_FLD(descr, "InnoDB buffer pool blob pages"), + + /* the plugin license (PLUGIN_LICENSE_XXX) */ + /* int */ + STRUCT_FLD(license, PLUGIN_LICENSE_GPL), + + /* the function to invoke when plugin is loaded */ + /* int (*)(void*); */ + STRUCT_FLD(init, i_s_innodb_buffer_pool_pages_blob_init), + + /* the function to invoke when plugin is unloaded */ + /* int (*)(void*); */ + STRUCT_FLD(deinit, i_s_common_deinit), + + /* plugin version (for SHOW PLUGINS) */ + /* unsigned int */ + STRUCT_FLD(version, 0x0100 /* 1.0 */), + + /* struct st_mysql_show_var* */ + STRUCT_FLD(status_vars, NULL), + + /* struct st_mysql_sys_var** */ + STRUCT_FLD(system_vars, NULL), + + /* reserved for dependency checking */ + /* void* */ + STRUCT_FLD(__reserved1, NULL) +}; + + +/* Fields of the dynamic table INFORMATION_SCHEMA.innodb_trx */ +static ST_FIELD_INFO innodb_trx_fields_info[] = +{ +#define IDX_TRX_ID 0 + {STRUCT_FLD(field_name, "trx_id"), + STRUCT_FLD(field_length, TRX_ID_MAX_LEN + 1), + STRUCT_FLD(field_type, MYSQL_TYPE_STRING), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, 0), + STRUCT_FLD(old_name, ""), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + +#define IDX_TRX_STATE 1 + {STRUCT_FLD(field_name, "trx_state"), + STRUCT_FLD(field_length, TRX_QUE_STATE_STR_MAX_LEN + 1), + STRUCT_FLD(field_type, MYSQL_TYPE_STRING), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, 0), + STRUCT_FLD(old_name, ""), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + +#define IDX_TRX_STARTED 2 + {STRUCT_FLD(field_name, "trx_started"), + STRUCT_FLD(field_length, 0), + STRUCT_FLD(field_type, MYSQL_TYPE_DATETIME), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, 0), + STRUCT_FLD(old_name, ""), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + +#define IDX_TRX_REQUESTED_LOCK_ID 3 + {STRUCT_FLD(field_name, "trx_requested_lock_id"), + STRUCT_FLD(field_length, TRX_I_S_LOCK_ID_MAX_LEN + 1), + STRUCT_FLD(field_type, MYSQL_TYPE_STRING), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, MY_I_S_MAYBE_NULL), + STRUCT_FLD(old_name, ""), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + +#define IDX_TRX_WAIT_STARTED 4 + {STRUCT_FLD(field_name, "trx_wait_started"), + STRUCT_FLD(field_length, 0), + STRUCT_FLD(field_type, MYSQL_TYPE_DATETIME), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, MY_I_S_MAYBE_NULL), + STRUCT_FLD(old_name, ""), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + +#define IDX_TRX_WEIGHT 5 + {STRUCT_FLD(field_name, "trx_weight"), + STRUCT_FLD(field_length, MY_INT64_NUM_DECIMAL_DIGITS), + STRUCT_FLD(field_type, MYSQL_TYPE_LONGLONG), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, MY_I_S_UNSIGNED), + STRUCT_FLD(old_name, ""), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + +#define IDX_TRX_MYSQL_THREAD_ID 6 + {STRUCT_FLD(field_name, "trx_mysql_thread_id"), + STRUCT_FLD(field_length, MY_INT64_NUM_DECIMAL_DIGITS), + STRUCT_FLD(field_type, MYSQL_TYPE_LONGLONG), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, MY_I_S_UNSIGNED), + STRUCT_FLD(old_name, ""), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + +#define IDX_TRX_QUERY 7 + {STRUCT_FLD(field_name, "trx_query"), + STRUCT_FLD(field_length, TRX_I_S_TRX_QUERY_MAX_LEN), + STRUCT_FLD(field_type, MYSQL_TYPE_STRING), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, MY_I_S_MAYBE_NULL), + STRUCT_FLD(old_name, ""), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + + END_OF_ST_FIELD_INFO +}; + +/*********************************************************************** +Read data from cache buffer and fill the INFORMATION_SCHEMA.innodb_trx +table with it. */ +static +int +fill_innodb_trx_from_cache( +/*=======================*/ + /* out: 0 on success */ + trx_i_s_cache_t* cache, /* in: cache to read from */ + THD* thd, /* in: used to call + schema_table_store_record() */ + TABLE* table) /* in/out: fill this table */ +{ + Field** fields; + ulint rows_num; + char lock_id[TRX_I_S_LOCK_ID_MAX_LEN + 1]; + ulint i; + + DBUG_ENTER("fill_innodb_trx_from_cache"); + + fields = table->field; + + rows_num = trx_i_s_cache_get_rows_used(cache, + I_S_INNODB_TRX); + + for (i = 0; i < rows_num; i++) { + + i_s_trx_row_t* row; + char trx_id[TRX_ID_MAX_LEN + 1]; + + row = (i_s_trx_row_t*) + trx_i_s_cache_get_nth_row( + cache, I_S_INNODB_TRX, i); + + /* trx_id */ + ut_snprintf(trx_id, sizeof(trx_id), TRX_ID_FMT, row->trx_id); + OK(field_store_string(fields[IDX_TRX_ID], trx_id)); + + /* trx_state */ + OK(field_store_string(fields[IDX_TRX_STATE], + row->trx_state)); + + /* trx_started */ + OK(field_store_time_t(fields[IDX_TRX_STARTED], + (time_t) row->trx_started)); + + /* trx_requested_lock_id */ + /* trx_wait_started */ + if (row->trx_wait_started != 0) { + + OK(field_store_string( + fields[IDX_TRX_REQUESTED_LOCK_ID], + trx_i_s_create_lock_id( + row->requested_lock_row, + lock_id, sizeof(lock_id)))); + /* field_store_string() sets it no notnull */ + + OK(field_store_time_t( + fields[IDX_TRX_WAIT_STARTED], + (time_t) row->trx_wait_started)); + fields[IDX_TRX_WAIT_STARTED]->set_notnull(); + } else { + + fields[IDX_TRX_REQUESTED_LOCK_ID]->set_null(); + fields[IDX_TRX_WAIT_STARTED]->set_null(); + } + + /* trx_weight */ + OK(fields[IDX_TRX_WEIGHT]->store((longlong) row->trx_weight, + true)); + + /* trx_mysql_thread_id */ + OK(fields[IDX_TRX_MYSQL_THREAD_ID]->store( + row->trx_mysql_thread_id)); + + /* trx_query */ + OK(field_store_string(fields[IDX_TRX_QUERY], + row->trx_query)); + + OK(schema_table_store_record(thd, table)); + } + + DBUG_RETURN(0); +} + +/*********************************************************************** +Bind the dynamic table INFORMATION_SCHEMA.innodb_trx */ +static +int +innodb_trx_init( +/*============*/ + /* out: 0 on success */ + void* p) /* in/out: table schema object */ +{ + ST_SCHEMA_TABLE* schema; + + DBUG_ENTER("innodb_trx_init"); + + schema = (ST_SCHEMA_TABLE*) p; + + schema->fields_info = innodb_trx_fields_info; + schema->fill_table = trx_i_s_common_fill_table; + + DBUG_RETURN(0); +} + + +UNIV_INTERN struct st_mysql_plugin i_s_innodb_trx = +{ + /* the plugin type (a MYSQL_XXX_PLUGIN value) */ + /* int */ + STRUCT_FLD(type, MYSQL_INFORMATION_SCHEMA_PLUGIN), + + /* pointer to type-specific plugin descriptor */ + /* void* */ + STRUCT_FLD(info, &i_s_info), + + /* plugin name */ + /* const char* */ + STRUCT_FLD(name, "INNODB_TRX"), + + /* plugin author (for SHOW PLUGINS) */ + /* const char* */ + STRUCT_FLD(author, plugin_author), + + /* general descriptive text (for SHOW PLUGINS) */ + /* const char* */ + STRUCT_FLD(descr, "InnoDB transactions"), + + /* the plugin license (PLUGIN_LICENSE_XXX) */ + /* int */ + STRUCT_FLD(license, PLUGIN_LICENSE_GPL), + + /* the function to invoke when plugin is loaded */ + /* int (*)(void*); */ + STRUCT_FLD(init, innodb_trx_init), + + /* the function to invoke when plugin is unloaded */ + /* int (*)(void*); */ + STRUCT_FLD(deinit, i_s_common_deinit), + + /* plugin version (for SHOW PLUGINS) */ + /* unsigned int */ + STRUCT_FLD(version, INNODB_VERSION_SHORT), + + /* struct st_mysql_show_var* */ + STRUCT_FLD(status_vars, NULL), + + /* struct st_mysql_sys_var** */ + STRUCT_FLD(system_vars, NULL), + + /* reserved for dependency checking */ + /* void* */ + STRUCT_FLD(__reserved1, NULL) +}; + +/* Fields of the dynamic table INFORMATION_SCHEMA.innodb_locks */ +static ST_FIELD_INFO innodb_locks_fields_info[] = +{ +#define IDX_LOCK_ID 0 + {STRUCT_FLD(field_name, "lock_id"), + STRUCT_FLD(field_length, TRX_I_S_LOCK_ID_MAX_LEN + 1), + STRUCT_FLD(field_type, MYSQL_TYPE_STRING), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, 0), + STRUCT_FLD(old_name, ""), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + +#define IDX_LOCK_TRX_ID 1 + {STRUCT_FLD(field_name, "lock_trx_id"), + STRUCT_FLD(field_length, TRX_ID_MAX_LEN + 1), + STRUCT_FLD(field_type, MYSQL_TYPE_STRING), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, 0), + STRUCT_FLD(old_name, ""), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + +#define IDX_LOCK_MODE 2 + {STRUCT_FLD(field_name, "lock_mode"), + /* S[,GAP] X[,GAP] IS[,GAP] IX[,GAP] AUTO_INC UNKNOWN */ + STRUCT_FLD(field_length, 32), + STRUCT_FLD(field_type, MYSQL_TYPE_STRING), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, 0), + STRUCT_FLD(old_name, ""), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + +#define IDX_LOCK_TYPE 3 + {STRUCT_FLD(field_name, "lock_type"), + STRUCT_FLD(field_length, 32 /* RECORD|TABLE|UNKNOWN */), + STRUCT_FLD(field_type, MYSQL_TYPE_STRING), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, 0), + STRUCT_FLD(old_name, ""), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + +#define IDX_LOCK_TABLE 4 + {STRUCT_FLD(field_name, "lock_table"), + STRUCT_FLD(field_length, 1024), + STRUCT_FLD(field_type, MYSQL_TYPE_STRING), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, 0), + STRUCT_FLD(old_name, ""), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + +#define IDX_LOCK_INDEX 5 + {STRUCT_FLD(field_name, "lock_index"), + STRUCT_FLD(field_length, 1024), + STRUCT_FLD(field_type, MYSQL_TYPE_STRING), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, MY_I_S_MAYBE_NULL), + STRUCT_FLD(old_name, ""), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + +#define IDX_LOCK_SPACE 6 + {STRUCT_FLD(field_name, "lock_space"), + STRUCT_FLD(field_length, MY_INT64_NUM_DECIMAL_DIGITS), + STRUCT_FLD(field_type, MYSQL_TYPE_LONGLONG), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, MY_I_S_UNSIGNED | MY_I_S_MAYBE_NULL), + STRUCT_FLD(old_name, ""), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + +#define IDX_LOCK_PAGE 7 + {STRUCT_FLD(field_name, "lock_page"), + STRUCT_FLD(field_length, MY_INT64_NUM_DECIMAL_DIGITS), + STRUCT_FLD(field_type, MYSQL_TYPE_LONGLONG), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, MY_I_S_UNSIGNED | MY_I_S_MAYBE_NULL), + STRUCT_FLD(old_name, ""), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + +#define IDX_LOCK_REC 8 + {STRUCT_FLD(field_name, "lock_rec"), + STRUCT_FLD(field_length, MY_INT64_NUM_DECIMAL_DIGITS), + STRUCT_FLD(field_type, MYSQL_TYPE_LONGLONG), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, MY_I_S_UNSIGNED | MY_I_S_MAYBE_NULL), + STRUCT_FLD(old_name, ""), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + +#define IDX_LOCK_DATA 9 + {STRUCT_FLD(field_name, "lock_data"), + STRUCT_FLD(field_length, TRX_I_S_LOCK_DATA_MAX_LEN), + STRUCT_FLD(field_type, MYSQL_TYPE_STRING), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, MY_I_S_MAYBE_NULL), + STRUCT_FLD(old_name, ""), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + + END_OF_ST_FIELD_INFO +}; + +/*********************************************************************** +Read data from cache buffer and fill the INFORMATION_SCHEMA.innodb_locks +table with it. */ +static +int +fill_innodb_locks_from_cache( +/*=========================*/ + /* out: 0 on success */ + trx_i_s_cache_t* cache, /* in: cache to read from */ + THD* thd, /* in: MySQL client connection */ + TABLE* table) /* in/out: fill this table */ +{ + Field** fields; + ulint rows_num; + char lock_id[TRX_I_S_LOCK_ID_MAX_LEN + 1]; + ulint i; + + DBUG_ENTER("fill_innodb_locks_from_cache"); + + fields = table->field; + + rows_num = trx_i_s_cache_get_rows_used(cache, + I_S_INNODB_LOCKS); + + for (i = 0; i < rows_num; i++) { + + i_s_locks_row_t* row; + + /* note that the decoded database or table name is + never expected to be longer than NAME_LEN; + NAME_LEN for database name + 2 for surrounding quotes around database name + NAME_LEN for table name + 2 for surrounding quotes around table name + 1 for the separating dot (.) + 9 for the #mysql50# prefix */ + char buf[2 * NAME_LEN + 14]; + const char* bufend; + + char lock_trx_id[TRX_ID_MAX_LEN + 1]; + + row = (i_s_locks_row_t*) + trx_i_s_cache_get_nth_row( + cache, I_S_INNODB_LOCKS, i); + + /* lock_id */ + trx_i_s_create_lock_id(row, lock_id, sizeof(lock_id)); + OK(field_store_string(fields[IDX_LOCK_ID], + lock_id)); + + /* lock_trx_id */ + ut_snprintf(lock_trx_id, sizeof(lock_trx_id), + TRX_ID_FMT, row->lock_trx_id); + OK(field_store_string(fields[IDX_LOCK_TRX_ID], lock_trx_id)); + + /* lock_mode */ + OK(field_store_string(fields[IDX_LOCK_MODE], + row->lock_mode)); + + /* lock_type */ + OK(field_store_string(fields[IDX_LOCK_TYPE], + row->lock_type)); + + /* lock_table */ + bufend = innobase_convert_name(buf, sizeof(buf), + row->lock_table, + strlen(row->lock_table), + thd, TRUE); + OK(fields[IDX_LOCK_TABLE]->store(buf, bufend - buf, + system_charset_info)); + + /* lock_index */ + if (row->lock_index != NULL) { + + bufend = innobase_convert_name(buf, sizeof(buf), + row->lock_index, + strlen(row->lock_index), + thd, FALSE); + OK(fields[IDX_LOCK_INDEX]->store(buf, bufend - buf, + system_charset_info)); + fields[IDX_LOCK_INDEX]->set_notnull(); + } else { + + fields[IDX_LOCK_INDEX]->set_null(); + } + + /* lock_space */ + OK(field_store_ulint(fields[IDX_LOCK_SPACE], + row->lock_space)); + + /* lock_page */ + OK(field_store_ulint(fields[IDX_LOCK_PAGE], + row->lock_page)); + + /* lock_rec */ + OK(field_store_ulint(fields[IDX_LOCK_REC], + row->lock_rec)); + + /* lock_data */ + OK(field_store_string(fields[IDX_LOCK_DATA], + row->lock_data)); + + OK(schema_table_store_record(thd, table)); + } + + DBUG_RETURN(0); +} + +/*********************************************************************** +Bind the dynamic table INFORMATION_SCHEMA.innodb_locks */ +static +int +innodb_locks_init( +/*==============*/ + /* out: 0 on success */ + void* p) /* in/out: table schema object */ +{ + ST_SCHEMA_TABLE* schema; + + DBUG_ENTER("innodb_locks_init"); + + schema = (ST_SCHEMA_TABLE*) p; + + schema->fields_info = innodb_locks_fields_info; + schema->fill_table = trx_i_s_common_fill_table; + + DBUG_RETURN(0); +} + +UNIV_INTERN struct st_mysql_plugin i_s_innodb_locks = +{ + /* the plugin type (a MYSQL_XXX_PLUGIN value) */ + /* int */ + STRUCT_FLD(type, MYSQL_INFORMATION_SCHEMA_PLUGIN), + + /* pointer to type-specific plugin descriptor */ + /* void* */ + STRUCT_FLD(info, &i_s_info), + + /* plugin name */ + /* const char* */ + STRUCT_FLD(name, "INNODB_LOCKS"), + + /* plugin author (for SHOW PLUGINS) */ + /* const char* */ + STRUCT_FLD(author, plugin_author), + + /* general descriptive text (for SHOW PLUGINS) */ + /* const char* */ + STRUCT_FLD(descr, "InnoDB conflicting locks"), + + /* the plugin license (PLUGIN_LICENSE_XXX) */ + /* int */ + STRUCT_FLD(license, PLUGIN_LICENSE_GPL), + + /* the function to invoke when plugin is loaded */ + /* int (*)(void*); */ + STRUCT_FLD(init, innodb_locks_init), + + /* the function to invoke when plugin is unloaded */ + /* int (*)(void*); */ + STRUCT_FLD(deinit, i_s_common_deinit), + + /* plugin version (for SHOW PLUGINS) */ + /* unsigned int */ + STRUCT_FLD(version, INNODB_VERSION_SHORT), + + /* struct st_mysql_show_var* */ + STRUCT_FLD(status_vars, NULL), + + /* struct st_mysql_sys_var** */ + STRUCT_FLD(system_vars, NULL), + + /* reserved for dependency checking */ + /* void* */ + STRUCT_FLD(__reserved1, NULL) +}; + +/* Fields of the dynamic table INFORMATION_SCHEMA.innodb_lock_waits */ +static ST_FIELD_INFO innodb_lock_waits_fields_info[] = +{ +#define IDX_REQUESTING_TRX_ID 0 + {STRUCT_FLD(field_name, "requesting_trx_id"), + STRUCT_FLD(field_length, TRX_ID_MAX_LEN + 1), + STRUCT_FLD(field_type, MYSQL_TYPE_STRING), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, 0), + STRUCT_FLD(old_name, ""), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + +#define IDX_REQUESTED_LOCK_ID 1 + {STRUCT_FLD(field_name, "requested_lock_id"), + STRUCT_FLD(field_length, TRX_I_S_LOCK_ID_MAX_LEN + 1), + STRUCT_FLD(field_type, MYSQL_TYPE_STRING), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, 0), + STRUCT_FLD(old_name, ""), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + +#define IDX_BLOCKING_TRX_ID 2 + {STRUCT_FLD(field_name, "blocking_trx_id"), + STRUCT_FLD(field_length, TRX_ID_MAX_LEN + 1), + STRUCT_FLD(field_type, MYSQL_TYPE_STRING), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, 0), + STRUCT_FLD(old_name, ""), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + +#define IDX_BLOCKING_LOCK_ID 3 + {STRUCT_FLD(field_name, "blocking_lock_id"), + STRUCT_FLD(field_length, TRX_I_S_LOCK_ID_MAX_LEN + 1), + STRUCT_FLD(field_type, MYSQL_TYPE_STRING), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, 0), + STRUCT_FLD(old_name, ""), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + + END_OF_ST_FIELD_INFO +}; + +/*********************************************************************** +Read data from cache buffer and fill the +INFORMATION_SCHEMA.innodb_lock_waits table with it. */ +static +int +fill_innodb_lock_waits_from_cache( +/*==============================*/ + /* out: 0 on success */ + trx_i_s_cache_t* cache, /* in: cache to read from */ + THD* thd, /* in: used to call + schema_table_store_record() */ + TABLE* table) /* in/out: fill this table */ +{ + Field** fields; + ulint rows_num; + char requested_lock_id[TRX_I_S_LOCK_ID_MAX_LEN + 1]; + char blocking_lock_id[TRX_I_S_LOCK_ID_MAX_LEN + 1]; + ulint i; + + DBUG_ENTER("fill_innodb_lock_waits_from_cache"); + + fields = table->field; + + rows_num = trx_i_s_cache_get_rows_used(cache, + I_S_INNODB_LOCK_WAITS); + + for (i = 0; i < rows_num; i++) { + + i_s_lock_waits_row_t* row; + + char requesting_trx_id[TRX_ID_MAX_LEN + 1]; + char blocking_trx_id[TRX_ID_MAX_LEN + 1]; + + row = (i_s_lock_waits_row_t*) + trx_i_s_cache_get_nth_row( + cache, I_S_INNODB_LOCK_WAITS, i); + + /* requesting_trx_id */ + ut_snprintf(requesting_trx_id, sizeof(requesting_trx_id), + TRX_ID_FMT, row->requested_lock_row->lock_trx_id); + OK(field_store_string(fields[IDX_REQUESTING_TRX_ID], + requesting_trx_id)); + + /* requested_lock_id */ + OK(field_store_string( + fields[IDX_REQUESTED_LOCK_ID], + trx_i_s_create_lock_id( + row->requested_lock_row, + requested_lock_id, + sizeof(requested_lock_id)))); + + /* blocking_trx_id */ + ut_snprintf(blocking_trx_id, sizeof(blocking_trx_id), + TRX_ID_FMT, row->blocking_lock_row->lock_trx_id); + OK(field_store_string(fields[IDX_BLOCKING_TRX_ID], + blocking_trx_id)); + + /* blocking_lock_id */ + OK(field_store_string( + fields[IDX_BLOCKING_LOCK_ID], + trx_i_s_create_lock_id( + row->blocking_lock_row, + blocking_lock_id, + sizeof(blocking_lock_id)))); + + OK(schema_table_store_record(thd, table)); + } + + DBUG_RETURN(0); +} + +/*********************************************************************** +Bind the dynamic table INFORMATION_SCHEMA.innodb_lock_waits */ +static +int +innodb_lock_waits_init( +/*===================*/ + /* out: 0 on success */ + void* p) /* in/out: table schema object */ +{ + ST_SCHEMA_TABLE* schema; + + DBUG_ENTER("innodb_lock_waits_init"); + + schema = (ST_SCHEMA_TABLE*) p; + + schema->fields_info = innodb_lock_waits_fields_info; + schema->fill_table = trx_i_s_common_fill_table; + + DBUG_RETURN(0); +} + +UNIV_INTERN struct st_mysql_plugin i_s_innodb_lock_waits = +{ + /* the plugin type (a MYSQL_XXX_PLUGIN value) */ + /* int */ + STRUCT_FLD(type, MYSQL_INFORMATION_SCHEMA_PLUGIN), + + /* pointer to type-specific plugin descriptor */ + /* void* */ + STRUCT_FLD(info, &i_s_info), + + /* plugin name */ + /* const char* */ + STRUCT_FLD(name, "INNODB_LOCK_WAITS"), + + /* plugin author (for SHOW PLUGINS) */ + /* const char* */ + STRUCT_FLD(author, "Innobase Oy"), + + /* general descriptive text (for SHOW PLUGINS) */ + /* const char* */ + STRUCT_FLD(descr, "InnoDB which lock is blocking which"), + + /* the plugin license (PLUGIN_LICENSE_XXX) */ + /* int */ + STRUCT_FLD(license, PLUGIN_LICENSE_GPL), + + /* the function to invoke when plugin is loaded */ + /* int (*)(void*); */ + STRUCT_FLD(init, innodb_lock_waits_init), + + /* the function to invoke when plugin is unloaded */ + /* int (*)(void*); */ + STRUCT_FLD(deinit, i_s_common_deinit), + + /* plugin version (for SHOW PLUGINS) */ + /* unsigned int */ + STRUCT_FLD(version, INNODB_VERSION_SHORT), + + /* struct st_mysql_show_var* */ + STRUCT_FLD(status_vars, NULL), + + /* struct st_mysql_sys_var** */ + STRUCT_FLD(system_vars, NULL), + + /* reserved for dependency checking */ + /* void* */ + STRUCT_FLD(__reserved1, NULL) +}; + +/*********************************************************************** +Common function to fill any of the dynamic tables: +INFORMATION_SCHEMA.innodb_trx +INFORMATION_SCHEMA.innodb_locks +INFORMATION_SCHEMA.innodb_lock_waits */ +static +int +trx_i_s_common_fill_table( +/*======================*/ + /* out: 0 on success */ + THD* thd, /* in: thread */ + TABLE_LIST* tables, /* in/out: tables to fill */ + COND* cond) /* in: condition (not used) */ +{ + const char* table_name; + int ret; + trx_i_s_cache_t* cache; + + DBUG_ENTER("trx_i_s_common_fill_table"); + + /* deny access to non-superusers */ + if (check_global_access(thd, PROCESS_ACL)) { + + DBUG_RETURN(0); + } + + /* minimize the number of places where global variables are + referenced */ + cache = trx_i_s_cache; + + /* which table we have to fill? */ + table_name = tables->schema_table_name; + /* or table_name = tables->schema_table->table_name; */ + + RETURN_IF_INNODB_NOT_STARTED(table_name); + + /* update the cache */ + trx_i_s_cache_start_write(cache); + trx_i_s_possibly_fetch_data_into_cache(cache); + trx_i_s_cache_end_write(cache); + + if (trx_i_s_cache_is_truncated(cache)) { + + /* XXX show warning to user if possible */ + fprintf(stderr, "Warning: data in %s truncated due to " + "memory limit of %d bytes\n", table_name, + TRX_I_S_MEM_LIMIT); + } + + ret = 0; + + trx_i_s_cache_start_read(cache); + + if (innobase_strcasecmp(table_name, "innodb_trx") == 0) { + + if (fill_innodb_trx_from_cache( + cache, thd, tables->table) != 0) { + + ret = 1; + } + + } else if (innobase_strcasecmp(table_name, "innodb_locks") == 0) { + + if (fill_innodb_locks_from_cache( + cache, thd, tables->table) != 0) { + + ret = 1; + } + + } else if (innobase_strcasecmp(table_name, "innodb_lock_waits") == 0) { + + if (fill_innodb_lock_waits_from_cache( + cache, thd, tables->table) != 0) { + + ret = 1; + } + + } else { + + /* huh! what happened!? */ + fprintf(stderr, + "InnoDB: trx_i_s_common_fill_table() was " + "called to fill unknown table: %s.\n" + "This function only knows how to fill " + "innodb_trx, innodb_locks and " + "innodb_lock_waits tables.\n", table_name); + + ret = 1; + } + + trx_i_s_cache_end_read(cache); + +#if 0 + DBUG_RETURN(ret); +#else + /* if this function returns something else than 0 then a + deadlock occurs between the mysqld server and mysql client, + see http://bugs.mysql.com/29900 ; when that bug is resolved + we can enable the DBUG_RETURN(ret) above */ + DBUG_RETURN(0); +#endif +} + +/* Fields of the dynamic table information_schema.innodb_cmp. */ +static ST_FIELD_INFO i_s_cmp_fields_info[] = +{ + {STRUCT_FLD(field_name, "page_size"), + STRUCT_FLD(field_length, 5), + STRUCT_FLD(field_type, MYSQL_TYPE_LONG), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, 0), + STRUCT_FLD(old_name, "Compressed Page Size"), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + + {STRUCT_FLD(field_name, "compress_ops"), + STRUCT_FLD(field_length, MY_INT32_NUM_DECIMAL_DIGITS), + STRUCT_FLD(field_type, MYSQL_TYPE_LONG), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, 0), + STRUCT_FLD(old_name, "Total Number of Compressions"), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + + {STRUCT_FLD(field_name, "compress_ops_ok"), + STRUCT_FLD(field_length, MY_INT32_NUM_DECIMAL_DIGITS), + STRUCT_FLD(field_type, MYSQL_TYPE_LONG), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, 0), + STRUCT_FLD(old_name, "Total Number of" + " Successful Compressions"), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + + {STRUCT_FLD(field_name, "compress_time"), + STRUCT_FLD(field_length, MY_INT32_NUM_DECIMAL_DIGITS), + STRUCT_FLD(field_type, MYSQL_TYPE_LONG), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, 0), + STRUCT_FLD(old_name, "Total Duration of Compressions," + " in Seconds"), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + + {STRUCT_FLD(field_name, "uncompress_ops"), + STRUCT_FLD(field_length, MY_INT32_NUM_DECIMAL_DIGITS), + STRUCT_FLD(field_type, MYSQL_TYPE_LONG), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, 0), + STRUCT_FLD(old_name, "Total Number of Decompressions"), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + + {STRUCT_FLD(field_name, "uncompress_time"), + STRUCT_FLD(field_length, MY_INT32_NUM_DECIMAL_DIGITS), + STRUCT_FLD(field_type, MYSQL_TYPE_LONG), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, 0), + STRUCT_FLD(old_name, "Total Duration of Decompressions," + " in Seconds"), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + + END_OF_ST_FIELD_INFO +}; + + +/*********************************************************************** +Fill the dynamic table information_schema.innodb_cmp or +innodb_cmp_reset. */ +static +int +i_s_cmp_fill_low( +/*=============*/ + /* out: 0 on success, 1 on failure */ + THD* thd, /* in: thread */ + TABLE_LIST* tables, /* in/out: tables to fill */ + COND* cond, /* in: condition (ignored) */ + ibool reset) /* in: TRUE=reset cumulated counts */ +{ + TABLE* table = (TABLE *) tables->table; + int status = 0; + + DBUG_ENTER("i_s_cmp_fill_low"); + + /* deny access to non-superusers */ + if (check_global_access(thd, PROCESS_ACL)) { + + DBUG_RETURN(0); + } + + RETURN_IF_INNODB_NOT_STARTED(tables->schema_table_name); + + for (uint i = 0; i < PAGE_ZIP_NUM_SSIZE - 1; i++) { + page_zip_stat_t* zip_stat = &page_zip_stat[i]; + + table->field[0]->store(PAGE_ZIP_MIN_SIZE << i); + + /* The cumulated counts are not protected by any + mutex. Thus, some operation in page0zip.c could + increment a counter between the time we read it and + clear it. We could introduce mutex protection, but it + could cause a measureable performance hit in + page0zip.c. */ + table->field[1]->store(zip_stat->compressed); + table->field[2]->store(zip_stat->compressed_ok); + table->field[3]->store( + (ulong) (zip_stat->compressed_usec / 1000000)); + table->field[4]->store(zip_stat->decompressed); + table->field[5]->store( + (ulong) (zip_stat->decompressed_usec / 1000000)); + + if (reset) { + memset(zip_stat, 0, sizeof *zip_stat); + } + + if (schema_table_store_record(thd, table)) { + status = 1; + break; + } + } + + DBUG_RETURN(status); +} + +/*********************************************************************** +Fill the dynamic table information_schema.innodb_cmp. */ +static +int +i_s_cmp_fill( +/*=========*/ + /* out: 0 on success, 1 on failure */ + THD* thd, /* in: thread */ + TABLE_LIST* tables, /* in/out: tables to fill */ + COND* cond) /* in: condition (ignored) */ +{ + return(i_s_cmp_fill_low(thd, tables, cond, FALSE)); +} + +/*********************************************************************** +Fill the dynamic table information_schema.innodb_cmp_reset. */ +static +int +i_s_cmp_reset_fill( +/*===============*/ + /* out: 0 on success, 1 on failure */ + THD* thd, /* in: thread */ + TABLE_LIST* tables, /* in/out: tables to fill */ + COND* cond) /* in: condition (ignored) */ +{ + return(i_s_cmp_fill_low(thd, tables, cond, TRUE)); +} + +/*********************************************************************** +Bind the dynamic table information_schema.innodb_cmp. */ +static +int +i_s_cmp_init( +/*=========*/ + /* out: 0 on success */ + void* p) /* in/out: table schema object */ +{ + DBUG_ENTER("i_s_cmp_init"); + ST_SCHEMA_TABLE* schema = (ST_SCHEMA_TABLE*) p; + + schema->fields_info = i_s_cmp_fields_info; + schema->fill_table = i_s_cmp_fill; + + DBUG_RETURN(0); +} + +/*********************************************************************** +Bind the dynamic table information_schema.innodb_cmp_reset. */ +static +int +i_s_cmp_reset_init( +/*===============*/ + /* out: 0 on success */ + void* p) /* in/out: table schema object */ +{ + DBUG_ENTER("i_s_cmp_reset_init"); + ST_SCHEMA_TABLE* schema = (ST_SCHEMA_TABLE*) p; + + schema->fields_info = i_s_cmp_fields_info; + schema->fill_table = i_s_cmp_reset_fill; + + DBUG_RETURN(0); +} + +UNIV_INTERN struct st_mysql_plugin i_s_innodb_cmp = +{ + /* the plugin type (a MYSQL_XXX_PLUGIN value) */ + /* int */ + STRUCT_FLD(type, MYSQL_INFORMATION_SCHEMA_PLUGIN), + + /* pointer to type-specific plugin descriptor */ + /* void* */ + STRUCT_FLD(info, &i_s_info), + + /* plugin name */ + /* const char* */ + STRUCT_FLD(name, "INNODB_CMP"), + + /* plugin author (for SHOW PLUGINS) */ + /* const char* */ + STRUCT_FLD(author, plugin_author), + + /* general descriptive text (for SHOW PLUGINS) */ + /* const char* */ + STRUCT_FLD(descr, "Statistics for the InnoDB compression"), + + /* the plugin license (PLUGIN_LICENSE_XXX) */ + /* int */ + STRUCT_FLD(license, PLUGIN_LICENSE_GPL), + + /* the function to invoke when plugin is loaded */ + /* int (*)(void*); */ + STRUCT_FLD(init, i_s_cmp_init), + + /* the function to invoke when plugin is unloaded */ + /* int (*)(void*); */ + STRUCT_FLD(deinit, i_s_common_deinit), + + /* plugin version (for SHOW PLUGINS) */ + /* unsigned int */ + STRUCT_FLD(version, INNODB_VERSION_SHORT), + + /* struct st_mysql_show_var* */ + STRUCT_FLD(status_vars, NULL), + + /* struct st_mysql_sys_var** */ + STRUCT_FLD(system_vars, NULL), + + /* reserved for dependency checking */ + /* void* */ + STRUCT_FLD(__reserved1, NULL) +}; + +UNIV_INTERN struct st_mysql_plugin i_s_innodb_cmp_reset = +{ + /* the plugin type (a MYSQL_XXX_PLUGIN value) */ + /* int */ + STRUCT_FLD(type, MYSQL_INFORMATION_SCHEMA_PLUGIN), + + /* pointer to type-specific plugin descriptor */ + /* void* */ + STRUCT_FLD(info, &i_s_info), + + /* plugin name */ + /* const char* */ + STRUCT_FLD(name, "INNODB_CMP_RESET"), + + /* plugin author (for SHOW PLUGINS) */ + /* const char* */ + STRUCT_FLD(author, plugin_author), + + /* general descriptive text (for SHOW PLUGINS) */ + /* const char* */ + STRUCT_FLD(descr, "Statistics for the InnoDB compression;" + " reset cumulated counts"), + + /* the plugin license (PLUGIN_LICENSE_XXX) */ + /* int */ + STRUCT_FLD(license, PLUGIN_LICENSE_GPL), + + /* the function to invoke when plugin is loaded */ + /* int (*)(void*); */ + STRUCT_FLD(init, i_s_cmp_reset_init), + + /* the function to invoke when plugin is unloaded */ + /* int (*)(void*); */ + STRUCT_FLD(deinit, i_s_common_deinit), + + /* plugin version (for SHOW PLUGINS) */ + /* unsigned int */ + STRUCT_FLD(version, INNODB_VERSION_SHORT), + + /* struct st_mysql_show_var* */ + STRUCT_FLD(status_vars, NULL), + + /* struct st_mysql_sys_var** */ + STRUCT_FLD(system_vars, NULL), + + /* reserved for dependency checking */ + /* void* */ + STRUCT_FLD(__reserved1, NULL) +}; + +/* Fields of the dynamic table information_schema.innodb_cmpmem. */ +static ST_FIELD_INFO i_s_cmpmem_fields_info[] = +{ + {STRUCT_FLD(field_name, "page_size"), + STRUCT_FLD(field_length, 5), + STRUCT_FLD(field_type, MYSQL_TYPE_LONG), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, 0), + STRUCT_FLD(old_name, "Buddy Block Size"), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + + {STRUCT_FLD(field_name, "pages_used"), + STRUCT_FLD(field_length, MY_INT32_NUM_DECIMAL_DIGITS), + STRUCT_FLD(field_type, MYSQL_TYPE_LONG), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, 0), + STRUCT_FLD(old_name, "Currently in Use"), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + + {STRUCT_FLD(field_name, "pages_free"), + STRUCT_FLD(field_length, MY_INT32_NUM_DECIMAL_DIGITS), + STRUCT_FLD(field_type, MYSQL_TYPE_LONG), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, 0), + STRUCT_FLD(old_name, "Currently Available"), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + + {STRUCT_FLD(field_name, "relocation_ops"), + STRUCT_FLD(field_length, MY_INT64_NUM_DECIMAL_DIGITS), + STRUCT_FLD(field_type, MYSQL_TYPE_LONGLONG), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, 0), + STRUCT_FLD(old_name, "Total Number of Relocations"), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + + {STRUCT_FLD(field_name, "relocation_time"), + STRUCT_FLD(field_length, MY_INT32_NUM_DECIMAL_DIGITS), + STRUCT_FLD(field_type, MYSQL_TYPE_LONG), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, 0), + STRUCT_FLD(old_name, "Total Duration of Relocations," + " in Seconds"), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + + END_OF_ST_FIELD_INFO +}; + +/*********************************************************************** +Fill the dynamic table information_schema.innodb_cmpmem or +innodb_cmpmem_reset. */ +static +int +i_s_cmpmem_fill_low( +/*================*/ + /* out: 0 on success, 1 on failure */ + THD* thd, /* in: thread */ + TABLE_LIST* tables, /* in/out: tables to fill */ + COND* cond, /* in: condition (ignored) */ + ibool reset) /* in: TRUE=reset cumulated counts */ +{ + TABLE* table = (TABLE *) tables->table; + int status = 0; + + DBUG_ENTER("i_s_cmpmem_fill_low"); + + /* deny access to non-superusers */ + if (check_global_access(thd, PROCESS_ACL)) { + + DBUG_RETURN(0); + } + + RETURN_IF_INNODB_NOT_STARTED(tables->schema_table_name); + + buf_pool_mutex_enter(); + + for (uint x = 0; x <= BUF_BUDDY_SIZES; x++) { + buf_buddy_stat_t* buddy_stat = &buf_buddy_stat[x]; + + table->field[0]->store(BUF_BUDDY_LOW << x); + table->field[1]->store(buddy_stat->used); + table->field[2]->store(UNIV_LIKELY(x < BUF_BUDDY_SIZES) + ? UT_LIST_GET_LEN(buf_pool->zip_free[x]) + : 0); + table->field[3]->store((longlong) buddy_stat->relocated, true); + table->field[4]->store( + (ulong) (buddy_stat->relocated_usec / 1000000)); + + if (reset) { + /* This is protected by buf_pool_mutex. */ + buddy_stat->relocated = 0; + buddy_stat->relocated_usec = 0; + } + + if (schema_table_store_record(thd, table)) { + status = 1; + break; + } + } + + buf_pool_mutex_exit(); + DBUG_RETURN(status); +} + +/*********************************************************************** +Fill the dynamic table information_schema.innodb_cmpmem. */ +static +int +i_s_cmpmem_fill( +/*============*/ + /* out: 0 on success, 1 on failure */ + THD* thd, /* in: thread */ + TABLE_LIST* tables, /* in/out: tables to fill */ + COND* cond) /* in: condition (ignored) */ +{ + return(i_s_cmpmem_fill_low(thd, tables, cond, FALSE)); +} + +/*********************************************************************** +Fill the dynamic table information_schema.innodb_cmpmem_reset. */ +static +int +i_s_cmpmem_reset_fill( +/*==================*/ + /* out: 0 on success, 1 on failure */ + THD* thd, /* in: thread */ + TABLE_LIST* tables, /* in/out: tables to fill */ + COND* cond) /* in: condition (ignored) */ +{ + return(i_s_cmpmem_fill_low(thd, tables, cond, TRUE)); +} + +/*********************************************************************** +Bind the dynamic table information_schema.innodb_cmpmem. */ +static +int +i_s_cmpmem_init( +/*============*/ + /* out: 0 on success */ + void* p) /* in/out: table schema object */ +{ + DBUG_ENTER("i_s_cmpmem_init"); + ST_SCHEMA_TABLE* schema = (ST_SCHEMA_TABLE*) p; + + schema->fields_info = i_s_cmpmem_fields_info; + schema->fill_table = i_s_cmpmem_fill; + + DBUG_RETURN(0); +} + +/*********************************************************************** +Bind the dynamic table information_schema.innodb_cmpmem_reset. */ +static +int +i_s_cmpmem_reset_init( +/*==================*/ + /* out: 0 on success */ + void* p) /* in/out: table schema object */ +{ + DBUG_ENTER("i_s_cmpmem_reset_init"); + ST_SCHEMA_TABLE* schema = (ST_SCHEMA_TABLE*) p; + + schema->fields_info = i_s_cmpmem_fields_info; + schema->fill_table = i_s_cmpmem_reset_fill; + + DBUG_RETURN(0); +} + +UNIV_INTERN struct st_mysql_plugin i_s_innodb_cmpmem = +{ + /* the plugin type (a MYSQL_XXX_PLUGIN value) */ + /* int */ + STRUCT_FLD(type, MYSQL_INFORMATION_SCHEMA_PLUGIN), + + /* pointer to type-specific plugin descriptor */ + /* void* */ + STRUCT_FLD(info, &i_s_info), + + /* plugin name */ + /* const char* */ + STRUCT_FLD(name, "INNODB_CMPMEM"), + + /* plugin author (for SHOW PLUGINS) */ + /* const char* */ + STRUCT_FLD(author, plugin_author), + + /* general descriptive text (for SHOW PLUGINS) */ + /* const char* */ + STRUCT_FLD(descr, "Statistics for the InnoDB compressed buffer pool"), + + /* the plugin license (PLUGIN_LICENSE_XXX) */ + /* int */ + STRUCT_FLD(license, PLUGIN_LICENSE_GPL), + + /* the function to invoke when plugin is loaded */ + /* int (*)(void*); */ + STRUCT_FLD(init, i_s_cmpmem_init), + + /* the function to invoke when plugin is unloaded */ + /* int (*)(void*); */ + STRUCT_FLD(deinit, i_s_common_deinit), + + /* plugin version (for SHOW PLUGINS) */ + /* unsigned int */ + STRUCT_FLD(version, INNODB_VERSION_SHORT), + + /* struct st_mysql_show_var* */ + STRUCT_FLD(status_vars, NULL), + + /* struct st_mysql_sys_var** */ + STRUCT_FLD(system_vars, NULL), + + /* reserved for dependency checking */ + /* void* */ + STRUCT_FLD(__reserved1, NULL) +}; + +UNIV_INTERN struct st_mysql_plugin i_s_innodb_cmpmem_reset = +{ + /* the plugin type (a MYSQL_XXX_PLUGIN value) */ + /* int */ + STRUCT_FLD(type, MYSQL_INFORMATION_SCHEMA_PLUGIN), + + /* pointer to type-specific plugin descriptor */ + /* void* */ + STRUCT_FLD(info, &i_s_info), + + /* plugin name */ + /* const char* */ + STRUCT_FLD(name, "INNODB_CMPMEM_RESET"), + + /* plugin author (for SHOW PLUGINS) */ + /* const char* */ + STRUCT_FLD(author, plugin_author), + + /* general descriptive text (for SHOW PLUGINS) */ + /* const char* */ + STRUCT_FLD(descr, "Statistics for the InnoDB compressed buffer pool;" + " reset cumulated counts"), + + /* the plugin license (PLUGIN_LICENSE_XXX) */ + /* int */ + STRUCT_FLD(license, PLUGIN_LICENSE_GPL), + + /* the function to invoke when plugin is loaded */ + /* int (*)(void*); */ + STRUCT_FLD(init, i_s_cmpmem_reset_init), + + /* the function to invoke when plugin is unloaded */ + /* int (*)(void*); */ + STRUCT_FLD(deinit, i_s_common_deinit), + + /* plugin version (for SHOW PLUGINS) */ + /* unsigned int */ + STRUCT_FLD(version, INNODB_VERSION_SHORT), + + /* struct st_mysql_show_var* */ + STRUCT_FLD(status_vars, NULL), + + /* struct st_mysql_sys_var** */ + STRUCT_FLD(system_vars, NULL), + + /* reserved for dependency checking */ + /* void* */ + STRUCT_FLD(__reserved1, NULL) +}; + +/*********************************************************************** +Unbind a dynamic INFORMATION_SCHEMA table. */ +static +int +i_s_common_deinit( +/*==============*/ + /* out: 0 on success */ + void* p) /* in/out: table schema object */ +{ + DBUG_ENTER("i_s_common_deinit"); + + /* Do nothing */ + + DBUG_RETURN(0); +} + +/*********************************************************************** +*/ +static ST_FIELD_INFO i_s_innodb_rseg_fields_info[] = +{ + {STRUCT_FLD(field_name, "rseg_id"), + STRUCT_FLD(field_length, MY_INT64_NUM_DECIMAL_DIGITS), + STRUCT_FLD(field_type, MYSQL_TYPE_LONGLONG), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, MY_I_S_UNSIGNED), + STRUCT_FLD(old_name, ""), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + + {STRUCT_FLD(field_name, "space_id"), + STRUCT_FLD(field_length, MY_INT64_NUM_DECIMAL_DIGITS), + STRUCT_FLD(field_type, MYSQL_TYPE_LONGLONG), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, MY_I_S_UNSIGNED), + STRUCT_FLD(old_name, ""), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + + {STRUCT_FLD(field_name, "zip_size"), + STRUCT_FLD(field_length, MY_INT64_NUM_DECIMAL_DIGITS), + STRUCT_FLD(field_type, MYSQL_TYPE_LONGLONG), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, MY_I_S_UNSIGNED), + STRUCT_FLD(old_name, ""), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + + {STRUCT_FLD(field_name, "page_no"), + STRUCT_FLD(field_length, MY_INT64_NUM_DECIMAL_DIGITS), + STRUCT_FLD(field_type, MYSQL_TYPE_LONGLONG), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, MY_I_S_UNSIGNED), + STRUCT_FLD(old_name, ""), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + + {STRUCT_FLD(field_name, "max_size"), + STRUCT_FLD(field_length, MY_INT64_NUM_DECIMAL_DIGITS), + STRUCT_FLD(field_type, MYSQL_TYPE_LONGLONG), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, MY_I_S_UNSIGNED), + STRUCT_FLD(old_name, ""), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + + {STRUCT_FLD(field_name, "curr_size"), + STRUCT_FLD(field_length, MY_INT64_NUM_DECIMAL_DIGITS), + STRUCT_FLD(field_type, MYSQL_TYPE_LONGLONG), + STRUCT_FLD(value, 0), + STRUCT_FLD(field_flags, MY_I_S_UNSIGNED), + STRUCT_FLD(old_name, ""), + STRUCT_FLD(open_method, SKIP_OPEN_TABLE)}, + + END_OF_ST_FIELD_INFO +}; + +static +int +i_s_innodb_rseg_fill( +/*=================*/ + THD* thd, /* in: thread */ + TABLE_LIST* tables, /* in/out: tables to fill */ + COND* cond) /* in: condition (ignored) */ +{ + TABLE* table = (TABLE *) tables->table; + int status = 0; + trx_rseg_t* rseg; + + DBUG_ENTER("i_s_innodb_rseg_fill"); + + /* deny access to non-superusers */ + if (check_global_access(thd, PROCESS_ACL)) { + + DBUG_RETURN(0); + } + + RETURN_IF_INNODB_NOT_STARTED(tables->schema_table_name); + + rseg = UT_LIST_GET_FIRST(trx_sys->rseg_list); + + while (rseg) { + table->field[0]->store(rseg->id); + table->field[1]->store(rseg->space); + table->field[2]->store(rseg->zip_size); + table->field[3]->store(rseg->page_no); + table->field[4]->store(rseg->max_size); + table->field[5]->store(rseg->curr_size); + + if (schema_table_store_record(thd, table)) { + status = 1; + break; + } + + rseg = UT_LIST_GET_NEXT(rseg_list, rseg); + } + + DBUG_RETURN(status); +} + +static +int +i_s_innodb_rseg_init( +/*=================*/ + /* out: 0 on success */ + void* p) /* in/out: table schema object */ +{ + DBUG_ENTER("i_s_innodb_rseg_init"); + ST_SCHEMA_TABLE* schema = (ST_SCHEMA_TABLE*) p; + + schema->fields_info = i_s_innodb_rseg_fields_info; + schema->fill_table = i_s_innodb_rseg_fill; + + DBUG_RETURN(0); +} + +UNIV_INTERN struct st_mysql_plugin i_s_innodb_rseg = +{ + /* the plugin type (a MYSQL_XXX_PLUGIN value) */ + /* int */ + STRUCT_FLD(type, MYSQL_INFORMATION_SCHEMA_PLUGIN), + + /* pointer to type-specific plugin descriptor */ + /* void* */ + STRUCT_FLD(info, &i_s_info), + + /* plugin name */ + /* const char* */ + STRUCT_FLD(name, "INNODB_RSEG"), + + /* plugin author (for SHOW PLUGINS) */ + /* const char* */ + STRUCT_FLD(author, plugin_author), + + /* general descriptive text (for SHOW PLUGINS) */ + /* const char* */ + STRUCT_FLD(descr, "InnoDB rollback segment information"), + + /* the plugin license (PLUGIN_LICENSE_XXX) */ + /* int */ + STRUCT_FLD(license, PLUGIN_LICENSE_GPL), + + /* the function to invoke when plugin is loaded */ + /* int (*)(void*); */ + STRUCT_FLD(init, i_s_innodb_rseg_init), + + /* the function to invoke when plugin is unloaded */ + /* int (*)(void*); */ + STRUCT_FLD(deinit, i_s_common_deinit), + + /* plugin version (for SHOW PLUGINS) */ + /* unsigned int */ + STRUCT_FLD(version, 0x0100 /* 1.0 */), + + /* struct st_mysql_show_var* */ + STRUCT_FLD(status_vars, NULL), + + /* struct st_mysql_sys_var** */ + STRUCT_FLD(system_vars, NULL), + + /* reserved for dependency checking */ + /* void* */ + STRUCT_FLD(__reserved1, NULL) +}; === added file 'storage/xtradb/handler/i_s.h' --- a/storage/xtradb/handler/i_s.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/handler/i_s.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,41 @@ +/***************************************************************************** + +Copyright (c) 2007, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +InnoDB INFORMATION SCHEMA tables interface to MySQL. + +Created July 18, 2007 Vasil Dimov +*******************************************************/ + +#ifndef i_s_h +#define i_s_h + +extern struct st_mysql_plugin i_s_innodb_buffer_pool_pages; +extern struct st_mysql_plugin i_s_innodb_buffer_pool_pages_index; +extern struct st_mysql_plugin i_s_innodb_buffer_pool_pages_blob; +extern struct st_mysql_plugin i_s_innodb_trx; +extern struct st_mysql_plugin i_s_innodb_locks; +extern struct st_mysql_plugin i_s_innodb_lock_waits; +extern struct st_mysql_plugin i_s_innodb_cmp; +extern struct st_mysql_plugin i_s_innodb_cmp_reset; +extern struct st_mysql_plugin i_s_innodb_cmpmem; +extern struct st_mysql_plugin i_s_innodb_cmpmem_reset; +extern struct st_mysql_plugin i_s_innodb_patches; +extern struct st_mysql_plugin i_s_innodb_rseg; + +#endif /* i_s_h */ === added file 'storage/xtradb/handler/innodb_patch_info.h' --- a/storage/xtradb/handler/innodb_patch_info.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/handler/innodb_patch_info.h 2009-05-04 02:45:47 +0000 @@ -0,0 +1,35 @@ +/* Copyright (C) 2002-2006 MySQL AB + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; version 2 of the License. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ + +#ifdef USE_PRAGMA_INTERFACE +#pragma interface /* gcc class implementation */ +#endif + +struct innodb_enhancement { + const char *file; + const char *name; + const char *comment; + const char *link; +}innodb_enhancements[] = { +{"xtradb_show_enhancements","I_S.XTRADB_ENHANCEMENTS","","http://www.percona.com/docs/wiki/percona-xtradb"}, +{"innodb_show_status","Improvements to SHOW INNODB STATUS","Memory information and lock info fixes","http://www.percona.com/docs/wiki/percona-xtradb"}, +{"innodb_io","Improvements to InnoDB IO","","http://www.percona.com/docs/wiki/percona-xtradb"}, +{"innodb_opt_lru_count","Fix of buffer_pool mutex","Decreases contention on buffer_pool mutex on LRU operations","http://www.percona.com/docs/wiki/percona-xtradb"}, +{"innodb_buffer_pool_pages","Information of buffer pool content","","http://www.percona.com/docs/wiki/percona-xtradb"}, +{"innodb_expand_undo_slots","expandable maximum number of undo slots","from 1024 (default) to about 4000","http://www.percona.com/docs/wiki/percona-xtradb"}, +{"innodb_extra_rseg","allow to create extra rollback segments","When create new db, the new parameter allows to create more rollback segments","http://www.percona.com/docs/wiki/percona-xtradb"}, +{"innodb_overwrite_relay_log_info","overwrite relay-log.info when slave recovery","Building as plugin, it is not used.","http://www.percona.com/docs/wiki/percona-xtradb:innodb_overwrite_relay_log_…"}, +{NULL, NULL, NULL, NULL} +}; === added file 'storage/xtradb/handler/mysql_addons.cc' --- a/storage/xtradb/handler/mysql_addons.cc 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/handler/mysql_addons.cc 2009-03-26 06:11:11 +0000 @@ -0,0 +1,41 @@ +/***************************************************************************** + +Copyright (c) 2007, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +This file contains functions that need to be added to +MySQL code but have not been added yet. + +Whenever you add a function here submit a MySQL bug +report (feature request) with the implementation. Then +write the bug number in the comment before the +function in this file. + +When MySQL commits the function it can be deleted from +here. In a perfect world this file exists but is empty. + +Created November 07, 2007 Vasil Dimov +*******************************************************/ + +#ifndef MYSQL_SERVER +#define MYSQL_SERVER +#endif /* MYSQL_SERVER */ + +#include <mysql_priv.h> + +#include "mysql_addons.h" +#include "univ.i" === added file 'storage/xtradb/handler/win_delay_loader.cc' --- a/storage/xtradb/handler/win_delay_loader.cc 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/handler/win_delay_loader.cc 2009-03-26 06:11:11 +0000 @@ -0,0 +1,1036 @@ +/***************************************************************************** + +Copyright (c) 2008, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/*********************************************************************** +This file contains functions that implement the delay loader on Windows. + +This is a customized version of delay loader with limited functionalities. +It does not support: + +* (manual) unloading +* multiple delay loaded DLLs +* multiple loading of the same DLL + +This delay loader is used only by the InnoDB plugin. Other components (DLLs) +can still use the default delay loader, provided by MSVC. + +Several acronyms used by Microsoft: + * IAT: import address table + * INT: import name table + * RVA: Relative Virtual Address + +See http://msdn.microsoft.com/en-us/magazine/bb985992.aspx for details of +PE format. +***********************************************************************/ +#if defined (__WIN__) && defined (MYSQL_DYNAMIC_PLUGIN) +# define WIN32_LEAN_AND_MEAN +# include <windows.h> +# include <delayimp.h> +# include <mysql_priv.h> + +extern "C" { +# include "univ.i" +# include "hash0hash.h" +} + +/*********************************************************************** +This following contains a list of externals that can not be resolved by +delay loading. They have to be resolved indirectly via their addresses +in the .map file. All of them are external variables. */ +CHARSET_INFO* wdl_my_charset_bin; +CHARSET_INFO* wdl_my_charset_latin1; +CHARSET_INFO* wdl_my_charset_filename; +CHARSET_INFO** wdl_system_charset_info; +CHARSET_INFO** wdl_default_charset_info; +CHARSET_INFO** wdl_all_charsets; +system_variables* wdl_global_system_variables; +char* wdl_mysql_real_data_home; +char** wdl_mysql_data_home; +char** wdl_tx_isolation_names; +char** wdl_binlog_format_names; +char* wdl_reg_ext; +pthread_mutex_t* wdl_LOCK_thread_count; +key_map* wdl_key_map_full; +MY_TMPDIR* wdl_mysql_tmpdir_list; +bool* wdl_mysqld_embedded; +uint* wdl_lower_case_table_names; +ulong* wdl_specialflag; +int* wdl_my_umask; + +/*********************************************************************** +The following is defined in ha_innodb.cc. It is used for copying the +system variables from the builtin innodb plugin to the dynamic plugin. +*/ +extern struct st_mysql_plugin* builtin_innobase_plugin_ptr; + +/*********************************************************************** +The preffered load-address defined in PE (portable executable format).*/ +#if defined(_M_IA64) +#pragma section(".base", long, read) +extern "C" +__declspec(allocate(".base")) +const IMAGE_DOS_HEADER __ImageBase; +#else +extern "C" +const IMAGE_DOS_HEADER __ImageBase; +#endif + +/*********************************************************************** +A template function for converting a relative address (RVA) to an +absolute address (VA). This is due to the pointers in the delay +descriptor (ImgDelayDescr in delayimp.h) have been changed from +VAs to RVAs to work on both 32- and 64-bit platforms. */ +template <class X> +X PFromRva(RVA rva) { + return X(PBYTE(&__ImageBase) + rva); +} + +/*********************************************************************** +Convert to the old format for convenience. The structure as well as its +element names follow the definition of ImgDelayDescr in delayimp.h. */ +struct InternalImgDelayDescr { + DWORD grAttrs; /* attributes */ + LPCSTR szName; /* pointer to dll name */ + HMODULE* phmod; /* address of module handle */ + PImgThunkData pIAT; /* address of the IAT */ + PCImgThunkData pINT; /* address of the INT */ + PCImgThunkData pBoundIAT; /* address of the optional bound IAT */ + PCImgThunkData pUnloadIAT; /* address of optional copy of + original IAT */ + DWORD dwTimeStamp; /* 0 if not bound, + otherwise date/time stamp of DLL + bound to (Old BIND) */ +}; + +typedef struct map_hash_chain_struct map_hash_chain_t; + +struct map_hash_chain_struct { + char* symbol; /* pointer to a symbol */ + ulint value; /* address of the symbol */ + map_hash_chain_t* next; /* pointer to the next cell + in the same folder. */ + map_hash_chain_t* chain; /* a linear chain used for + cleanup. */ +}; + +static HMODULE my_hmod = 0; +static struct hash_table_struct* m_htbl = NULL ; +static map_hash_chain_t* chain_header = NULL; +static ibool wdl_init = FALSE; +const ulint MAP_HASH_CELLS_NUM = 10000; + +#ifndef DBUG_OFF +/*********************************************************************** +In the dynamic plugin, it is required to call the following dbug functions +in the server: + _db_pargs_ + _db_doprnt_ + _db_enter_ + _db_return_ + _db_dump_ + +The plugin will get those function pointers during the initialization. +*/ +typedef void (__cdecl* pfn_db_enter_)( + const char* _func_, + const char* _file_, + uint _line_, + const char** _sfunc_, + const char** _sfile_, + uint* _slevel_, + char***); + +typedef void (__cdecl* pfn_db_return_)( + uint _line_, + const char** _sfunc_, + const char** _sfile_, + uint* _slevel_); + +typedef void (__cdecl* pfn_db_pargs_)( + uint _line_, + const char* keyword); + +typedef void (__cdecl* pfn_db_doprnt_)( + const char* format, + ...); + +typedef void (__cdecl* pfn_db_dump_)( + uint _line_, + const char* keyword, + const unsigned char* memory, + size_t length); + +static pfn_db_enter_ wdl_db_enter_; +static pfn_db_return_ wdl_db_return_; +static pfn_db_pargs_ wdl_db_pargs_; +static pfn_db_doprnt_ wdl_db_doprnt_; +static pfn_db_dump_ wdl_db_dump_; +#endif /* !DBUG_OFF */ + +/***************************************************************** +Creates a hash table with >= n array cells. The actual number of cells is +chosen to be a prime number slightly bigger than n. + +This is the same function as hash_create in hash0hash.c, except the +memory allocation. This function is invoked before the engine is +initialized, and buffer pools are not ready yet. */ +static +hash_table_t* +wdl_hash_create( +/*============*/ + /* out, own: created hash table */ + ulint n) /* in: number of array cells */ +{ + hash_cell_t* array; + ulint prime; + hash_table_t* table; + + prime = ut_find_prime(n); + + table = (hash_table_t*) malloc(sizeof(hash_table_t)); + if (table == NULL) { + return(NULL); + } + + array = (hash_cell_t*) malloc(sizeof(hash_cell_t) * prime); + if (array == NULL) { + free(table); + return(NULL); + } + + table->array = array; + table->n_cells = prime; + table->n_mutexes = 0; + table->mutexes = NULL; + table->heaps = NULL; + table->heap = NULL; + table->magic_n = HASH_TABLE_MAGIC_N; + + /* Initialize the cell array */ + hash_table_clear(table); + + return(table); +} + +/***************************************************************** +Frees a hash table. */ +static +void +wdl_hash_table_free( +/*================*/ + hash_table_t* table) /* in, own: hash table */ +{ + ut_a(table != NULL); + ut_a(table->mutexes == NULL); + + free(table->array); + free(table); +} + +/*********************************************************************** +Function for calculating the count of imports given the base of the IAT. */ +static +ulint +wdl_import_count( +/*=============*/ + /* out: number of imports */ + PCImgThunkData pitd_base) /* in: base of the IAT */ +{ + ulint ret = 0; + PCImgThunkData pitd = pitd_base; + + while (pitd->u1.Function) { + pitd++; + ret++; + } + + return(ret); +} + +/*********************************************************************** +Read Mapfile to a hashtable for faster access */ +static +ibool +wdl_load_mapfile( +/*=============*/ + /* out: TRUE if the mapfile is + loaded successfully. */ + const char* filename) /* in: name of the mapfile. */ +{ + FILE* fp; + const size_t nSize = 256; + char tmp_buf[nSize]; + char* func_name; + char* func_addr; + ulint load_addr = 0; + ibool valid_load_addr = FALSE; +#ifdef _WIN64 + const char* tmp_string = " Preferred load address is %16llx"; +#else + const char* tmp_string = " Preferred load address is %08x"; +#endif + + fp = fopen(filename, "r"); + if (fp == NULL) { + + return(FALSE); + } + + /* Check whether to create the hashtable */ + if (m_htbl == NULL) { + + m_htbl = wdl_hash_create(MAP_HASH_CELLS_NUM); + + if (m_htbl == NULL) { + + fclose(fp); + return(FALSE); + } + } + + /* Search start of symbol list and get the preferred load address */ + while (fgets(tmp_buf, sizeof(tmp_buf), fp)) { + + if (sscanf(tmp_buf, tmp_string, &load_addr) == 1) { + + valid_load_addr = TRUE; + } + + if (strstr(tmp_buf, "Rva+Base") != NULL) { + + break; + } + } + + if (valid_load_addr == FALSE) { + + /* No "Preferred load address", the map file is wrong. */ + fclose(fp); + return(FALSE); + } + + /* Read symbol list */ + while (fgets(tmp_buf, sizeof(tmp_buf), fp)) + { + map_hash_chain_t* map_cell; + ulint map_fold; + + if (*tmp_buf == 0) { + + continue; + } + + func_name = strtok(tmp_buf, " "); + func_name = strtok(NULL, " "); + func_addr = strtok(NULL, " "); + + if (func_name && func_addr) { + + ut_snprintf(tmp_buf, nSize, "0x%s", func_addr); + if (*func_name == '_') { + + func_name++; + } + + map_cell = (map_hash_chain_t*) + malloc(sizeof(map_hash_chain_t)); + if (map_cell == NULL) { + return(FALSE); + } + + /* Chain all cells together */ + map_cell->chain = chain_header; + chain_header = map_cell; + + map_cell->symbol = strdup(func_name); + map_cell->value = (ulint) strtoull(tmp_buf, NULL, 0) + - load_addr; + map_fold = ut_fold_string(map_cell->symbol); + + HASH_INSERT(map_hash_chain_t, + next, + m_htbl, + map_fold, + map_cell); + } + } + + fclose(fp); + + return(TRUE); +} + +/***************************************************************** +Cleanup.during DLL unload */ +static +void +wdl_cleanup(void) +/*=============*/ +{ + while (chain_header != NULL) { + map_hash_chain_t* tmp; + + tmp = chain_header->chain; + free(chain_header->symbol); + free(chain_header); + chain_header = tmp; + } + + if (m_htbl != NULL) { + + wdl_hash_table_free(m_htbl); + } +} + +/*********************************************************************** +Load the mapfile mysqld.map. */ +static +HMODULE +wdl_get_mysqld_mapfile(void) +/*========================*/ + /* out: the module handle */ +{ + char file_name[MAX_PATH]; + char* ext; + ulint err; + + if (my_hmod == 0) { + + size_t nSize = MAX_PATH - strlen(".map") -1; + + /* First find out the name of current executable */ + my_hmod = GetModuleHandle(NULL); + if (my_hmod == 0) { + + return(my_hmod); + } + + err = GetModuleFileName(my_hmod, file_name, nSize); + if (err == 0) { + + my_hmod = 0; + return(my_hmod); + } + + ext = strrchr(file_name, '.'); + if (ext != NULL) { + + *ext = 0; + strcat(file_name, ".map"); + + err = wdl_load_mapfile(file_name); + if (err == 0) { + + my_hmod = 0; + } + } else { + + my_hmod = 0; + } + } + + return(my_hmod); +} + +/*********************************************************************** +Retrieves the address of an exported function. It follows the convention +of GetProcAddress(). */ +static +FARPROC +wdl_get_procaddr_from_map( +/*======================*/ + /* out: address of exported + function. */ + HANDLE m_handle, /* in: module handle */ + const char* import_proc) /* in: procedure name */ +{ + map_hash_chain_t* hash_chain; + ulint map_fold; + + map_fold = ut_fold_string(import_proc); + HASH_SEARCH( + next, + m_htbl, + map_fold, + map_hash_chain_t*, + hash_chain, + , + (ut_strcmp(hash_chain->symbol, import_proc) == 0)); + + if (hash_chain == NULL) { + +#ifdef _WIN64 + /* On Win64, the leading '_' may not be taken out. In this + case, search again without the leading '_'. */ + if (*import_proc == '_') { + + import_proc++; + } + + map_fold = ut_fold_string(import_proc); + HASH_SEARCH( + next, + m_htbl, + map_fold, + map_hash_chain_t*, + hash_chain, + , + (ut_strcmp(hash_chain->symbol, import_proc) == 0)); + + if (hash_chain == NULL) { +#endif + if (wdl_init == TRUE) { + + sql_print_error( + "InnoDB: the procedure pointer of %s" + " is not found.", + import_proc); + } + + return(0); +#ifdef _WIN64 + } +#endif + } + + return((FARPROC) ((ulint) m_handle + hash_chain->value)); +} + +/*********************************************************************** +Retrieves the address of an exported variable. +Note: It does not follow the Windows call convention FARPROC. */ +static +void* +wdl_get_varaddr_from_map( +/*=====================*/ + /* out: address of exported + variable. */ + HANDLE m_handle, /* in: module handle */ + const char* import_variable) /* in: variable name */ +{ + map_hash_chain_t* hash_chain; + ulint map_fold; + + map_fold = ut_fold_string(import_variable); + HASH_SEARCH( + next, + m_htbl, + map_fold, + map_hash_chain_t*, + hash_chain, + , + (ut_strcmp(hash_chain->symbol, import_variable) == 0)); + + if (hash_chain == NULL) { + +#ifdef _WIN64 + /* On Win64, the leading '_' may not be taken out. In this + case, search again without the leading '_'. */ + if (*import_variable == '_') { + + import_variable++; + } + + map_fold = ut_fold_string(import_variable); + HASH_SEARCH( + next, + m_htbl, + map_fold, + map_hash_chain_t*, + hash_chain, + , + (ut_strcmp(hash_chain->symbol, import_variable) == 0)); + + if (hash_chain == NULL) { +#endif + if (wdl_init == TRUE) { + + sql_print_error( + "InnoDB: the variable address of %s" + " is not found.", + import_variable); + } + + return(0); +#ifdef _WIN64 + } +#endif + } + + return((void*) ((ulint) m_handle + hash_chain->value)); +} + +/*********************************************************************** +Bind all unresolved external variables from the MySQL executable. */ +static +bool +wdl_get_external_variables(void) +/*============================*/ + /* out: TRUE if successful */ +{ + HMODULE hmod = wdl_get_mysqld_mapfile(); + + if (hmod == 0) { + + return(FALSE); + } + +#define GET_SYM(sym, var, type) \ + var = (type*) wdl_get_varaddr_from_map(hmod, sym); \ + if (var == NULL) return(FALSE) +#ifdef _WIN64 +#define GET_SYM2(sym1, sym2, var, type) \ + var = (type*) wdl_get_varaddr_from_map(hmod, sym1); \ + if (var == NULL) return(FALSE) +#else +#define GET_SYM2(sym1, sym2, var, type) \ + var = (type*) wdl_get_varaddr_from_map(hmod, sym2); \ + if (var == NULL) return(FALSE) +#endif // (_WIN64) +#define GET_C_SYM(sym, type) GET_SYM(#sym, wdl_##sym, type) +#define GET_PROC_ADDR(sym) \ + wdl##sym = (pfn##sym) wdl_get_procaddr_from_map(hmod, #sym) + + GET_C_SYM(my_charset_bin, CHARSET_INFO); + GET_C_SYM(my_charset_latin1, CHARSET_INFO); + GET_C_SYM(my_charset_filename, CHARSET_INFO); + GET_C_SYM(default_charset_info, CHARSET_INFO*); + GET_C_SYM(all_charsets, CHARSET_INFO*); + GET_C_SYM(my_umask, int); + + GET_SYM("?global_system_variables@@3Usystem_variables@@A", + wdl_global_system_variables, struct system_variables); + GET_SYM("?mysql_real_data_home@@3PADA", + wdl_mysql_real_data_home, char); + GET_SYM("?reg_ext@@3PADA", wdl_reg_ext, char); + GET_SYM("?LOCK_thread_count@@3U_RTL_CRITICAL_SECTION@@A", + wdl_LOCK_thread_count, pthread_mutex_t); + GET_SYM("?key_map_full@@3V?$Bitmap@$0EA@@@A", + wdl_key_map_full, key_map); + GET_SYM("?mysql_tmpdir_list@@3Ust_my_tmpdir@@A", + wdl_mysql_tmpdir_list, MY_TMPDIR); + GET_SYM("?mysqld_embedded@@3_NA", + wdl_mysqld_embedded, bool); + GET_SYM("?lower_case_table_names@@3IA", + wdl_lower_case_table_names, uint); + GET_SYM("?specialflag@@3KA", wdl_specialflag, ulong); + + GET_SYM2("?system_charset_info@@3PEAUcharset_info_st@@EA", + "?system_charset_info@@3PAUcharset_info_st@@A", + wdl_system_charset_info, CHARSET_INFO*); + GET_SYM2("?mysql_data_home@@3PEADEA", + "?mysql_data_home@@3PADA", + wdl_mysql_data_home, char*); + GET_SYM2("?tx_isolation_names@@3PAPEBDA", + "?tx_isolation_names@@3PAPBDA", + wdl_tx_isolation_names, char*); + GET_SYM2("?binlog_format_names@@3PAPEBDA", + "?binlog_format_names@@3PAPBDA", + wdl_binlog_format_names, char*); + + /* It is fine if builtin_innobase_plugin is not available. */ + builtin_innobase_plugin_ptr = (struct st_mysql_plugin*) + wdl_get_varaddr_from_map( + hmod, + "?builtin_innobase_plugin@@3PAUst_mysql_plugin@@A"); + +#ifndef DBUG_OFF + GET_PROC_ADDR(_db_enter_); + GET_PROC_ADDR(_db_return_); + GET_PROC_ADDR(_db_pargs_); + GET_PROC_ADDR(_db_doprnt_); + GET_PROC_ADDR(_db_dump_); + + /* If any of the dbug functions is not available, just make them + all invalid. This is the case when working with a non-debug + version of the server. */ + if (wdl_db_enter_ == NULL || wdl_db_return_ == NULL + || wdl_db_pargs_ == NULL || wdl_db_doprnt_ == NULL + || wdl_db_dump_ == NULL) { + + wdl_db_enter_ = NULL; + wdl_db_return_ = NULL; + wdl_db_pargs_ = NULL; + wdl_db_doprnt_ = NULL; + wdl_db_dump_ = NULL; + } +#endif /* !DBUG_OFF */ + + wdl_init = TRUE; + return(TRUE); + +#undef GET_SYM +#undef GET_SYM2 +#undef GET_C_SYM +#undef GET_PROC_ADDR +} + +/*********************************************************************** +The DLL Delayed Loading Helper Function for resolving externals. + +The function may fail due to one of the three reasons: + +* Invalid parameter, which happens if the attributes in pidd aren't + specified correctly. +* Failed to load the map file mysqld.map. +* Failed to find an external name in the map file mysqld.map. + +Note: this function is called by run-time as well as __HrLoadAllImportsForDll. +So, it has to follow Windows call convention. */ +extern "C" +FARPROC WINAPI +__delayLoadHelper2( +/*===============*/ + /* out: the address of the imported + function*/ + PCImgDelayDescr pidd, /* in: a const pointer to a + ImgDelayDescr, see delayimp.h. */ + FARPROC* iat_entry) /* in/out: A pointer to the slot in + the delay load import address table + to be updated with the address of the + imported function. */ +{ + ulint iIAT, iINT; + HMODULE hmod; + PCImgThunkData pitd; + FARPROC fun = NULL; + + /* Set up data used for the hook procs */ + InternalImgDelayDescr idd = { + pidd->grAttrs, + PFromRva<LPCSTR>(pidd->rvaDLLName), + PFromRva<HMODULE*>(pidd->rvaHmod), + PFromRva<PImgThunkData>(pidd->rvaIAT), + PFromRva<PCImgThunkData>(pidd->rvaINT), + PFromRva<PCImgThunkData>(pidd->rvaBoundIAT), + PFromRva<PCImgThunkData>(pidd->rvaUnloadIAT), + pidd->dwTimeStamp + }; + + DelayLoadInfo dli = { + sizeof(DelayLoadInfo), + pidd, + iat_entry, + idd.szName, + {0}, + 0, + 0, + 0 + }; + + /* Check the Delay Load Attributes, log an error of invalid + parameter, which happens if the attributes in pidd are not + specified correctly. */ + if ((idd.grAttrs & dlattrRva) == 0) { + + sql_print_error("InnoDB: invalid parameter for delay loader."); + return(0); + } + + hmod = *idd.phmod; + + /* Calculate the index for the IAT entry in the import address table. + The INT entries are ordered the same as the IAT entries so the + calculation can be done on the IAT side. */ + iIAT = (PCImgThunkData) iat_entry - idd.pIAT; + iINT = iIAT; + + pitd = &(idd.pINT[iINT]); + + dli.dlp.fImportByName = !IMAGE_SNAP_BY_ORDINAL(pitd->u1.Ordinal); + + if (dli.dlp.fImportByName) { + + dli.dlp.szProcName = (LPCSTR) (PFromRva<PIMAGE_IMPORT_BY_NAME> + ((RVA) ((UINT_PTR) pitd->u1.AddressOfData))->Name); + } else { + + dli.dlp.dwOrdinal = (ulint) IMAGE_ORDINAL(pitd->u1.Ordinal); + } + + /* Now, load the mapfile, if it has not been done yet */ + if (hmod == 0) { + + hmod = wdl_get_mysqld_mapfile(); + } + + if (hmod == 0) { + /* LoadLibrary failed. */ + PDelayLoadInfo rgpdli[1] = {&dli}; + + dli.dwLastError = ::GetLastError(); + + sql_print_error( + "InnoDB: failed to load mysqld.map with error %d.", + dli.dwLastError); + + return(0); + } + + /* Store the library handle. */ + idd.phmod = &hmod; + + /* Go for the procedure now. */ + dli.hmodCur = hmod; + + if (pidd->rvaBoundIAT && pidd->dwTimeStamp) { + + /* Bound imports exist, check the timestamp from the target + image */ + PIMAGE_NT_HEADERS pinh; + + pinh = (PIMAGE_NT_HEADERS) ((byte*) hmod + + ((PIMAGE_DOS_HEADER) hmod)->e_lfanew); + + if (pinh->Signature == IMAGE_NT_SIGNATURE + && pinh->FileHeader.TimeDateStamp == idd.dwTimeStamp + && (DWORD) hmod == pinh->OptionalHeader.ImageBase) { + + /* We have a decent address in the bound IAT. */ + fun = (FARPROC) (UINT_PTR) + idd.pBoundIAT[iIAT].u1.Function; + + if (fun) { + + *iat_entry = fun; + return(fun); + } + } + } + + fun = wdl_get_procaddr_from_map(hmod, dli.dlp.szProcName); + + if (fun == 0) { + + return(0); + } + + *iat_entry = fun; + return(fun); +} + +/*********************************************************************** +Unload a DLL that was delay loaded. This function is called by run-time. */ +extern "C" +BOOL WINAPI +__FUnloadDelayLoadedDLL2( +/*=====================*/ + /* out: TRUE is returned if the DLL is found + and the IAT matches the original one. */ + LPCSTR module_name) /* in: DLL name */ +{ + return(TRUE); +} + +/****************************************************************** +Load all imports from a DLL that was specified with the /delayload linker +option. +Note: this function is called by run-time. So, it has to follow Windows call +convention. */ +extern "C" +HRESULT WINAPI +__HrLoadAllImportsForDll( +/*=====================*/ + /* out: S_OK if the DLL matches, otherwise + ERROR_MOD_NOT_FOUND is returned. */ + LPCSTR module_name) /* in: DLL name */ +{ + PIMAGE_NT_HEADERS img; + PCImgDelayDescr pidd; + IMAGE_DATA_DIRECTORY* image_data; + LPCSTR current_module; + HRESULT ret = ERROR_MOD_NOT_FOUND; + HMODULE hmod = (HMODULE) &__ImageBase; + + img = (PIMAGE_NT_HEADERS) ((byte*) hmod + + ((PIMAGE_DOS_HEADER) hmod)->e_lfanew); + image_data = + &img->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_DELAY_IMPORT]; + + /* Scan the delay load IAT/INT for the DLL */ + if (image_data->Size) { + + pidd = PFromRva<PCImgDelayDescr>(image_data->VirtualAddress); + + /* Check all of the listed DLLs we want to load. */ + while (pidd->rvaDLLName) { + + current_module = PFromRva<LPCSTR>(pidd->rvaDLLName); + + if (stricmp(module_name, current_module) == 0) { + + /* Found it, break out with pidd and + current_module set appropriately */ + break; + } + + /* To the next delay import descriptor */ + pidd++; + } + + if (pidd->rvaDLLName) { + + /* Found a matching DLL, now process it. */ + FARPROC* iat_entry; + size_t count; + + iat_entry = PFromRva<FARPROC*>(pidd->rvaIAT); + count = wdl_import_count((PCImgThunkData) iat_entry); + + /* now load all the imports from the DLL */ + while (count > 0) { + + /* No need to check the return value */ + __delayLoadHelper2(pidd, iat_entry); + iat_entry++; + count--; + } + + ret = S_OK; + } + } + + return ret; +} + +/****************************************************************** +The main function of a DLL */ +BOOL +WINAPI +DllMain( +/*====*/ + /* out: TRUE if the call succeeds */ + HINSTANCE hinstDLL, /* in: handle to the DLL module */ + DWORD fdwReason, /* Reason code that indicates why the + DLL entry-point function is being + called.*/ + LPVOID lpvReserved) /* in: additional parameter based on + fdwReason */ +{ + BOOL success = TRUE; + + switch (fdwReason) { + + case DLL_PROCESS_ATTACH: + success = wdl_get_external_variables(); + break; + + case DLL_PROCESS_DETACH: + wdl_cleanup(); + break; + } + + return(success); +} + +#ifndef DBUG_OFF +/****************************************************************** +Process entry point to user function. It makes the call to _db_enter_ +in mysqld.exe. The DBUG functions are defined in my_dbug.h. */ +extern "C" UNIV_INTERN +void +_db_enter_( + const char* _func_, /* in: current function name */ + const char* _file_, /* in: current file name */ + uint _line_, /* in: current source line number */ + const char** _sfunc_, /* out: previous _func_ */ + const char** _sfile_, /* out: previous _file_ */ + uint* _slevel_, /* out: previous nesting level */ + char*** _sframep_) /* out: previous frame pointer */ +{ + if (wdl_db_enter_ != NULL) { + + wdl_db_enter_(_func_, _file_, _line_, _sfunc_, _sfile_, + _slevel_, _sframep_); + } +} + +/****************************************************************** +Process exit from user function. It makes the call to _db_return_() +in the server. */ +extern "C" UNIV_INTERN +void +_db_return_( + uint _line_, /* in: current source line number */ + const char** _sfunc_, /* out: previous _func_ */ + const char** _sfile_, /* out: previous _file_ */ + uint* _slevel_) /* out: previous level */ +{ + if (wdl_db_return_ != NULL) { + + wdl_db_return_(_line_, _sfunc_, _sfile_, _slevel_); + } +} + +/****************************************************************** +Log arguments for subsequent use. It makes the call to _db_pargs_() +in the server. */ +extern "C" UNIV_INTERN +void +_db_pargs_( + uint _line_, /* in: current source line number */ + const char* keyword) /* in: keyword for current macro */ +{ + if (wdl_db_pargs_ != NULL) { + + wdl_db_pargs_(_line_, keyword); + } +} + +/****************************************************************** +Handle print of debug lines. It saves the text into a buffer first, +then makes the call to _db_doprnt_() in the server. The text is +truncated to the size of buffer. */ +extern "C" UNIV_INTERN +void +_db_doprnt_( + const char* format, /* in: the format string */ + ...) /* in: list of arguments */ +{ + va_list argp; + char buffer[512]; + + if (wdl_db_doprnt_ != NULL) { + + va_start(argp, format); + /* it is ok to ignore the trunction. */ + _vsnprintf(buffer, sizeof(buffer), format, argp); + wdl_db_doprnt_(buffer); + va_end(argp); + } +} + +/****************************************************************** +Dump a string in hex. It makes the call to _db_dump_() in the server. */ +extern "C" UNIV_INTERN +void +_db_dump_( + uint _line_, /* in: current source line + number */ + const char* keyword, /* in: keyword list */ + const unsigned char* memory, /* in: memory to dump */ + size_t length) /* in: bytes to dump */ +{ + if (wdl_db_dump_ != NULL) { + + wdl_db_dump_(_line_, keyword, memory, length); + } +} + +#endif /* !DBUG_OFF */ +#endif /* defined (__WIN__) && defined (MYSQL_DYNAMIC_PLUGIN) */ === added directory 'storage/xtradb/ibuf' === added file 'storage/xtradb/ibuf/ibuf0ibuf.c' --- a/storage/xtradb/ibuf/ibuf0ibuf.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/ibuf/ibuf0ibuf.c 2009-06-09 15:08:46 +0000 @@ -0,0 +1,3598 @@ +/***************************************************************************** + +Copyright (c) 1997, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Insert buffer + +Created 7/19/1997 Heikki Tuuri +*******************************************************/ + +#include "ibuf0ibuf.h" + +#ifdef UNIV_NONINL +#include "ibuf0ibuf.ic" +#endif + +#include "buf0buf.h" +#include "buf0rea.h" +#include "fsp0fsp.h" +#include "trx0sys.h" +#include "fil0fil.h" +#include "thr0loc.h" +#include "rem0rec.h" +#include "btr0cur.h" +#include "btr0pcur.h" +#include "btr0btr.h" +#include "sync0sync.h" +#include "dict0boot.h" +#include "fut0lst.h" +#include "lock0lock.h" +#include "log0recv.h" +#include "que0que.h" + +/* STRUCTURE OF AN INSERT BUFFER RECORD + +In versions < 4.1.x: + +1. The first field is the page number. +2. The second field is an array which stores type info for each subsequent + field. We store the information which affects the ordering of records, and + also the physical storage size of an SQL NULL value. E.g., for CHAR(10) it + is 10 bytes. +3. Next we have the fields of the actual index record. + +In versions >= 4.1.x: + +Note that contary to what we planned in the 1990's, there will only be one +insert buffer tree, and that is in the system tablespace of InnoDB. + +1. The first field is the space id. +2. The second field is a one-byte marker (0) which differentiates records from + the < 4.1.x storage format. +3. The third field is the page number. +4. The fourth field contains the type info, where we have also added 2 bytes to + store the charset. In the compressed table format of 5.0.x we must add more + information here so that we can build a dummy 'index' struct which 5.0.x + can use in the binary search on the index page in the ibuf merge phase. +5. The rest of the fields contain the fields of the actual index record. + +In versions >= 5.0.3: + +The first byte of the fourth field is an additional marker (0) if the record +is in the compact format. The presence of this marker can be detected by +looking at the length of the field modulo DATA_NEW_ORDER_NULL_TYPE_BUF_SIZE. + +The high-order bit of the character set field in the type info is the +"nullable" flag for the field. */ + + +/* PREVENTING DEADLOCKS IN THE INSERT BUFFER SYSTEM + +If an OS thread performs any operation that brings in disk pages from +non-system tablespaces into the buffer pool, or creates such a page there, +then the operation may have as a side effect an insert buffer index tree +compression. Thus, the tree latch of the insert buffer tree may be acquired +in the x-mode, and also the file space latch of the system tablespace may +be acquired in the x-mode. + +Also, an insert to an index in a non-system tablespace can have the same +effect. How do we know this cannot lead to a deadlock of OS threads? There +is a problem with the i\o-handler threads: they break the latching order +because they own x-latches to pages which are on a lower level than the +insert buffer tree latch, its page latches, and the tablespace latch an +insert buffer operation can reserve. + +The solution is the following: Let all the tree and page latches connected +with the insert buffer be later in the latching order than the fsp latch and +fsp page latches. + +Insert buffer pages must be such that the insert buffer is never invoked +when these pages are accessed as this would result in a recursion violating +the latching order. We let a special i/o-handler thread take care of i/o to +the insert buffer pages and the ibuf bitmap pages, as well as the fsp bitmap +pages and the first inode page, which contains the inode of the ibuf tree: let +us call all these ibuf pages. To prevent deadlocks, we do not let a read-ahead +access both non-ibuf and ibuf pages. + +Then an i/o-handler for the insert buffer never needs to access recursively the +insert buffer tree and thus obeys the latching order. On the other hand, other +i/o-handlers for other tablespaces may require access to the insert buffer, +but because all kinds of latches they need to access there are later in the +latching order, no violation of the latching order occurs in this case, +either. + +A problem is how to grow and contract an insert buffer tree. As it is later +in the latching order than the fsp management, we have to reserve the fsp +latch first, before adding or removing pages from the insert buffer tree. +We let the insert buffer tree have its own file space management: a free +list of pages linked to the tree root. To prevent recursive using of the +insert buffer when adding pages to the tree, we must first load these pages +to memory, obtaining a latch on them, and only after that add them to the +free list of the insert buffer tree. More difficult is removing of pages +from the free list. If there is an excess of pages in the free list of the +ibuf tree, they might be needed if some thread reserves the fsp latch, +intending to allocate more file space. So we do the following: if a thread +reserves the fsp latch, we check the writer count field of the latch. If +this field has value 1, it means that the thread did not own the latch +before entering the fsp system, and the mtr of the thread contains no +modifications to the fsp pages. Now we are free to reserve the ibuf latch, +and check if there is an excess of pages in the free list. We can then, in a +separate mini-transaction, take them out of the free list and free them to +the fsp system. + +To avoid deadlocks in the ibuf system, we divide file pages into three levels: + +(1) non-ibuf pages, +(2) ibuf tree pages and the pages in the ibuf tree free list, and +(3) ibuf bitmap pages. + +No OS thread is allowed to access higher level pages if it has latches to +lower level pages; even if the thread owns a B-tree latch it must not access +the B-tree non-leaf pages if it has latches on lower level pages. Read-ahead +is only allowed for level 1 and 2 pages. Dedicated i/o-handler threads handle +exclusively level 1 i/o. A dedicated i/o handler thread handles exclusively +level 2 i/o. However, if an OS thread does the i/o handling for itself, i.e., +it uses synchronous aio, it can access any pages, as long as it obeys the +access order rules. */ + +/* Buffer pool size per the maximum insert buffer size */ +#define IBUF_POOL_SIZE_PER_MAX_SIZE 2 + +/* Table name for the insert buffer. */ +#define IBUF_TABLE_NAME "SYS_IBUF_TABLE" + +/** Operations that can currently be buffered. */ +UNIV_INTERN ibuf_use_t ibuf_use = IBUF_USE_INSERT; + +/** The insert buffer control structure */ +UNIV_INTERN ibuf_t* ibuf = NULL; + +UNIV_INTERN ulint ibuf_flush_count = 0; + +#ifdef UNIV_IBUF_COUNT_DEBUG +/* Dimensions for the ibuf_count array */ +#define IBUF_COUNT_N_SPACES 4 +#define IBUF_COUNT_N_PAGES 130000 + +/* Buffered entry counts for file pages, used in debugging */ +static ulint ibuf_counts[IBUF_COUNT_N_SPACES][IBUF_COUNT_N_PAGES]; + +/********************************************************************** +Checks that the indexes to ibuf_counts[][] are within limits. */ +UNIV_INLINE +void +ibuf_count_check( +/*=============*/ + ulint space_id, /* in: space identifier */ + ulint page_no) /* in: page number */ +{ + if (space_id < IBUF_COUNT_N_SPACES && page_no < IBUF_COUNT_N_PAGES) { + return; + } + + fprintf(stderr, + "InnoDB: UNIV_IBUF_COUNT_DEBUG limits space_id and page_no\n" + "InnoDB: and breaks crash recovery.\n" + "InnoDB: space_id=%lu, should be 0<=space_id<%lu\n" + "InnoDB: page_no=%lu, should be 0<=page_no<%lu\n", + (ulint) space_id, (ulint) IBUF_COUNT_N_SPACES, + (ulint) page_no, (ulint) IBUF_COUNT_N_PAGES); + ut_error; +} +#endif + +/* The start address for an insert buffer bitmap page bitmap */ +#define IBUF_BITMAP PAGE_DATA + +/* Offsets in bits for the bits describing a single page in the bitmap */ +#define IBUF_BITMAP_FREE 0 +#define IBUF_BITMAP_BUFFERED 2 +#define IBUF_BITMAP_IBUF 3 /* TRUE if page is a part of the ibuf + tree, excluding the root page, or is + in the free list of the ibuf */ + +/* Number of bits describing a single page */ +#define IBUF_BITS_PER_PAGE 4 +#if IBUF_BITS_PER_PAGE % 2 +# error "IBUF_BITS_PER_PAGE must be an even number!" +#endif + +/* The mutex used to block pessimistic inserts to ibuf trees */ +static mutex_t ibuf_pessimistic_insert_mutex; + +/* The mutex protecting the insert buffer structs */ +static mutex_t ibuf_mutex; + +/* The mutex protecting the insert buffer bitmaps */ +static mutex_t ibuf_bitmap_mutex; + +/* The area in pages from which contract looks for page numbers for merge */ +#define IBUF_MERGE_AREA 8 + +/* Inside the merge area, pages which have at most 1 per this number less +buffered entries compared to maximum volume that can buffered for a single +page are merged along with the page whose buffer became full */ +#define IBUF_MERGE_THRESHOLD 4 + +/* In ibuf_contract at most this number of pages is read to memory in one +batch, in order to merge the entries for them in the insert buffer */ +#define IBUF_MAX_N_PAGES_MERGED IBUF_MERGE_AREA + +/* If the combined size of the ibuf trees exceeds ibuf->max_size by this +many pages, we start to contract it in connection to inserts there, using +non-synchronous contract */ +#define IBUF_CONTRACT_ON_INSERT_NON_SYNC 0 + +/* Same as above, but use synchronous contract */ +#define IBUF_CONTRACT_ON_INSERT_SYNC 5 + +/* Same as above, but no insert is done, only contract is called */ +#define IBUF_CONTRACT_DO_NOT_INSERT 10 + +/* TODO: how to cope with drop table if there are records in the insert +buffer for the indexes of the table? Is there actually any problem, +because ibuf merge is done to a page when it is read in, and it is +still physically like the index page even if the index would have been +dropped! So, there seems to be no problem. */ + +/********************************************************************** +Sets the flag in the current OS thread local storage denoting that it is +inside an insert buffer routine. */ +UNIV_INLINE +void +ibuf_enter(void) +/*============*/ +{ + ibool* ptr; + + ptr = thr_local_get_in_ibuf_field(); + + ut_ad(*ptr == FALSE); + + *ptr = TRUE; +} + +/********************************************************************** +Sets the flag in the current OS thread local storage denoting that it is +exiting an insert buffer routine. */ +UNIV_INLINE +void +ibuf_exit(void) +/*===========*/ +{ + ibool* ptr; + + ptr = thr_local_get_in_ibuf_field(); + + ut_ad(*ptr == TRUE); + + *ptr = FALSE; +} + +/********************************************************************** +Returns TRUE if the current OS thread is performing an insert buffer +routine. */ +UNIV_INTERN +ibool +ibuf_inside(void) +/*=============*/ + /* out: TRUE if inside an insert buffer routine: for instance, + a read-ahead of non-ibuf pages is then forbidden */ +{ + return(*thr_local_get_in_ibuf_field()); +} + +/********************************************************************** +Gets the ibuf header page and x-latches it. */ +static +page_t* +ibuf_header_page_get( +/*=================*/ + /* out: insert buffer header page */ + mtr_t* mtr) /* in: mtr */ +{ + buf_block_t* block; + + ut_ad(!ibuf_inside()); + + block = buf_page_get( + IBUF_SPACE_ID, 0, FSP_IBUF_HEADER_PAGE_NO, RW_X_LATCH, mtr); + buf_block_dbg_add_level(block, SYNC_IBUF_HEADER); + + return(buf_block_get_frame(block)); +} + +/********************************************************************** +Gets the root page and x-latches it. */ +static +page_t* +ibuf_tree_root_get( +/*===============*/ + /* out: insert buffer tree root page */ + mtr_t* mtr) /* in: mtr */ +{ + buf_block_t* block; + + ut_ad(ibuf_inside()); + + mtr_x_lock(dict_index_get_lock(ibuf->index), mtr); + + block = buf_page_get( + IBUF_SPACE_ID, 0, FSP_IBUF_TREE_ROOT_PAGE_NO, RW_X_LATCH, mtr); + + buf_block_dbg_add_level(block, SYNC_TREE_NODE); + + return(buf_block_get_frame(block)); +} + +#ifdef UNIV_IBUF_COUNT_DEBUG +/********************************************************************** +Gets the ibuf count for a given page. */ +UNIV_INTERN +ulint +ibuf_count_get( +/*===========*/ + /* out: number of entries in the insert buffer + currently buffered for this page */ + ulint space, /* in: space id */ + ulint page_no)/* in: page number */ +{ + ibuf_count_check(space, page_no); + + return(ibuf_counts[space][page_no]); +} + +/********************************************************************** +Sets the ibuf count for a given page. */ +static +void +ibuf_count_set( +/*===========*/ + ulint space, /* in: space id */ + ulint page_no,/* in: page number */ + ulint val) /* in: value to set */ +{ + ibuf_count_check(space, page_no); + ut_a(val < UNIV_PAGE_SIZE); + + ibuf_counts[space][page_no] = val; +} +#endif + +/********************************************************************** +Updates the size information of the ibuf, assuming the segment size has not +changed. */ +static +void +ibuf_size_update( +/*=============*/ + const page_t* root, /* in: ibuf tree root */ + mtr_t* mtr) /* in: mtr */ +{ + ut_ad(mutex_own(&ibuf_mutex)); + + ibuf->free_list_len = flst_get_len(root + PAGE_HEADER + + PAGE_BTR_IBUF_FREE_LIST, mtr); + + ibuf->height = 1 + btr_page_get_level(root, mtr); + + /* the '1 +' is the ibuf header page */ + ibuf->size = ibuf->seg_size - (1 + ibuf->free_list_len); + + ibuf->empty = page_get_n_recs(root) == 0; +} + +/********************************************************************** +Creates the insert buffer data structure at a database startup and initializes +the data structures for the insert buffer. */ +UNIV_INTERN +void +ibuf_init_at_db_start(void) +/*=======================*/ +{ + page_t* root; + mtr_t mtr; + dict_table_t* table; + mem_heap_t* heap; + dict_index_t* index; + ulint n_used; + page_t* header_page; + ulint error; + + ibuf = mem_alloc(sizeof(ibuf_t)); + + memset(ibuf, 0, sizeof(*ibuf)); + + /* Note that also a pessimistic delete can sometimes make a B-tree + grow in size, as the references on the upper levels of the tree can + change */ + + /* The default for ibuf_max_size is calculated from the requested + buffer pool size srv_buf_pool_size, not the actual size as returned + by buf_pool_get_curr_size(). The latter can differ from the former + by one page due to alignment requirements, and we do not want a + user-visible variable like INNODB_IBUF_MAX_SIZE to vary at random. */ + ibuf->max_size = ut_min( srv_buf_pool_size / UNIV_PAGE_SIZE + / IBUF_POOL_SIZE_PER_MAX_SIZE, (ulint) srv_ibuf_max_size / UNIV_PAGE_SIZE); + + srv_ibuf_max_size = (long long) ibuf->max_size * UNIV_PAGE_SIZE; + + mutex_create(&ibuf_pessimistic_insert_mutex, + SYNC_IBUF_PESS_INSERT_MUTEX); + + mutex_create(&ibuf_mutex, SYNC_IBUF_MUTEX); + + mutex_create(&ibuf_bitmap_mutex, SYNC_IBUF_BITMAP_MUTEX); + + mtr_start(&mtr); + + mutex_enter(&ibuf_mutex); + + mtr_x_lock(fil_space_get_latch(IBUF_SPACE_ID, NULL), &mtr); + + header_page = ibuf_header_page_get(&mtr); + + fseg_n_reserved_pages(header_page + IBUF_HEADER + IBUF_TREE_SEG_HEADER, + &n_used, &mtr); + ibuf_enter(); + + ut_ad(n_used >= 2); + + ibuf->seg_size = n_used; + + { + buf_block_t* block; + + block = buf_page_get( + IBUF_SPACE_ID, 0, FSP_IBUF_TREE_ROOT_PAGE_NO, + RW_X_LATCH, &mtr); + buf_block_dbg_add_level(block, SYNC_TREE_NODE); + + root = buf_block_get_frame(block); + } + + ibuf_size_update(root, &mtr); + mutex_exit(&ibuf_mutex); + + mtr_commit(&mtr); + + ibuf_exit(); + + heap = mem_heap_create(450); + + /* Use old-style record format for the insert buffer. */ + table = dict_mem_table_create(IBUF_TABLE_NAME, IBUF_SPACE_ID, 1, 0); + + dict_mem_table_add_col(table, heap, "DUMMY_COLUMN", DATA_BINARY, 0, 0); + + table->id = ut_dulint_add(DICT_IBUF_ID_MIN, IBUF_SPACE_ID); + + dict_table_add_to_cache(table, heap); + mem_heap_free(heap); + + index = dict_mem_index_create( + IBUF_TABLE_NAME, "CLUST_IND", + IBUF_SPACE_ID, DICT_CLUSTERED | DICT_UNIVERSAL | DICT_IBUF, 1); + + dict_mem_index_add_field(index, "DUMMY_COLUMN", 0); + + index->id = ut_dulint_add(DICT_IBUF_ID_MIN, IBUF_SPACE_ID); + + error = dict_index_add_to_cache(table, index, + FSP_IBUF_TREE_ROOT_PAGE_NO, FALSE); + ut_a(error == DB_SUCCESS); + + ibuf->index = dict_table_get_first_index(table); +} + +/************************************************************************* +Initializes an ibuf bitmap page. */ +UNIV_INTERN +void +ibuf_bitmap_page_init( +/*==================*/ + buf_block_t* block, /* in: bitmap page */ + mtr_t* mtr) /* in: mtr */ +{ + page_t* page; + ulint byte_offset; + ulint zip_size = buf_block_get_zip_size(block); + + ut_a(ut_is_2pow(zip_size)); + + page = buf_block_get_frame(block); + fil_page_set_type(page, FIL_PAGE_IBUF_BITMAP); + + /* Write all zeros to the bitmap */ + + if (!zip_size) { + byte_offset = UT_BITS_IN_BYTES(UNIV_PAGE_SIZE + * IBUF_BITS_PER_PAGE); + } else { + byte_offset = UT_BITS_IN_BYTES(zip_size * IBUF_BITS_PER_PAGE); + } + + memset(page + IBUF_BITMAP, 0, byte_offset); + + /* The remaining area (up to the page trailer) is uninitialized. */ + + mlog_write_initial_log_record(page, MLOG_IBUF_BITMAP_INIT, mtr); +} + +/************************************************************************* +Parses a redo log record of an ibuf bitmap page init. */ +UNIV_INTERN +byte* +ibuf_parse_bitmap_init( +/*===================*/ + /* out: end of log record or NULL */ + byte* ptr, /* in: buffer */ + byte* end_ptr __attribute__((unused)), /* in: buffer end */ + buf_block_t* block, /* in: block or NULL */ + mtr_t* mtr) /* in: mtr or NULL */ +{ + ut_ad(ptr && end_ptr); + + if (block) { + ibuf_bitmap_page_init(block, mtr); + } + + return(ptr); +} + +/************************************************************************ +Gets the desired bits for a given page from a bitmap page. */ +UNIV_INLINE +ulint +ibuf_bitmap_page_get_bits( +/*======================*/ + /* out: value of bits */ + const page_t* page, /* in: bitmap page */ + ulint page_no,/* in: page whose bits to get */ + ulint zip_size,/* in: compressed page size in bytes; + 0 for uncompressed pages */ + ulint bit, /* in: IBUF_BITMAP_FREE, + IBUF_BITMAP_BUFFERED, ... */ + mtr_t* mtr __attribute__((unused))) + /* in: mtr containing an + x-latch to the bitmap page */ +{ + ulint byte_offset; + ulint bit_offset; + ulint map_byte; + ulint value; + + ut_ad(bit < IBUF_BITS_PER_PAGE); +#if IBUF_BITS_PER_PAGE % 2 +# error "IBUF_BITS_PER_PAGE % 2 != 0" +#endif + ut_ad(ut_is_2pow(zip_size)); + ut_ad(mtr_memo_contains_page(mtr, page, MTR_MEMO_PAGE_X_FIX)); + + if (!zip_size) { + bit_offset = (page_no % UNIV_PAGE_SIZE) * IBUF_BITS_PER_PAGE + + bit; + } else { + bit_offset = (page_no & (zip_size - 1)) * IBUF_BITS_PER_PAGE + + bit; + } + + byte_offset = bit_offset / 8; + bit_offset = bit_offset % 8; + + ut_ad(byte_offset + IBUF_BITMAP < UNIV_PAGE_SIZE); + + map_byte = mach_read_from_1(page + IBUF_BITMAP + byte_offset); + + value = ut_bit_get_nth(map_byte, bit_offset); + + if (bit == IBUF_BITMAP_FREE) { + ut_ad(bit_offset + 1 < 8); + + value = value * 2 + ut_bit_get_nth(map_byte, bit_offset + 1); + } + + return(value); +} + +/************************************************************************ +Sets the desired bit for a given page in a bitmap page. */ +static +void +ibuf_bitmap_page_set_bits( +/*======================*/ + page_t* page, /* in: bitmap page */ + ulint page_no,/* in: page whose bits to set */ + ulint zip_size,/* in: compressed page size in bytes; + 0 for uncompressed pages */ + ulint bit, /* in: IBUF_BITMAP_FREE, IBUF_BITMAP_BUFFERED, ... */ + ulint val, /* in: value to set */ + mtr_t* mtr) /* in: mtr containing an x-latch to the bitmap page */ +{ + ulint byte_offset; + ulint bit_offset; + ulint map_byte; + + ut_ad(bit < IBUF_BITS_PER_PAGE); +#if IBUF_BITS_PER_PAGE % 2 +# error "IBUF_BITS_PER_PAGE % 2 != 0" +#endif + ut_ad(ut_is_2pow(zip_size)); + ut_ad(mtr_memo_contains_page(mtr, page, MTR_MEMO_PAGE_X_FIX)); +#ifdef UNIV_IBUF_COUNT_DEBUG + ut_a((bit != IBUF_BITMAP_BUFFERED) || (val != FALSE) + || (0 == ibuf_count_get(page_get_space_id(page), + page_no))); +#endif + if (!zip_size) { + bit_offset = (page_no % UNIV_PAGE_SIZE) * IBUF_BITS_PER_PAGE + + bit; + } else { + bit_offset = (page_no & (zip_size - 1)) * IBUF_BITS_PER_PAGE + + bit; + } + + byte_offset = bit_offset / 8; + bit_offset = bit_offset % 8; + + ut_ad(byte_offset + IBUF_BITMAP < UNIV_PAGE_SIZE); + + map_byte = mach_read_from_1(page + IBUF_BITMAP + byte_offset); + + if (bit == IBUF_BITMAP_FREE) { + ut_ad(bit_offset + 1 < 8); + ut_ad(val <= 3); + + map_byte = ut_bit_set_nth(map_byte, bit_offset, val / 2); + map_byte = ut_bit_set_nth(map_byte, bit_offset + 1, val % 2); + } else { + ut_ad(val <= 1); + map_byte = ut_bit_set_nth(map_byte, bit_offset, val); + } + + mlog_write_ulint(page + IBUF_BITMAP + byte_offset, map_byte, + MLOG_1BYTE, mtr); +} + +/************************************************************************ +Calculates the bitmap page number for a given page number. */ +UNIV_INLINE +ulint +ibuf_bitmap_page_no_calc( +/*=====================*/ + /* out: the bitmap page number where + the file page is mapped */ + ulint zip_size, /* in: compressed page size in bytes; + 0 for uncompressed pages */ + ulint page_no) /* in: tablespace page number */ +{ + ut_ad(ut_is_2pow(zip_size)); + + if (!zip_size) { + return(FSP_IBUF_BITMAP_OFFSET + + (page_no & ~(UNIV_PAGE_SIZE - 1))); + } else { + return(FSP_IBUF_BITMAP_OFFSET + + (page_no & ~(zip_size - 1))); + } +} + +/************************************************************************ +Gets the ibuf bitmap page where the bits describing a given file page are +stored. */ +static +page_t* +ibuf_bitmap_get_map_page( +/*=====================*/ + /* out: bitmap page where the file page is mapped, + that is, the bitmap page containing the descriptor + bits for the file page; the bitmap page is + x-latched */ + ulint space, /* in: space id of the file page */ + ulint page_no,/* in: page number of the file page */ + ulint zip_size,/* in: compressed page size in bytes; + 0 for uncompressed pages */ + mtr_t* mtr) /* in: mtr */ +{ + buf_block_t* block; + + block = buf_page_get(space, zip_size, + ibuf_bitmap_page_no_calc(zip_size, page_no), + RW_X_LATCH, mtr); + buf_block_dbg_add_level(block, SYNC_IBUF_BITMAP); + + return(buf_block_get_frame(block)); +} + +/**************************************************************************** +Sets the free bits of the page in the ibuf bitmap. This is done in a separate +mini-transaction, hence this operation does not restrict further work to only +ibuf bitmap operations, which would result if the latch to the bitmap page +were kept. */ +UNIV_INLINE +void +ibuf_set_free_bits_low( +/*===================*/ + ulint zip_size,/* in: compressed page size in bytes; + 0 for uncompressed pages */ + const buf_block_t* block, /* in: index page; free bits are set if + the index is non-clustered and page + level is 0 */ + ulint val, /* in: value to set: < 4 */ + mtr_t* mtr) /* in/out: mtr */ +{ + page_t* bitmap_page; + ulint space; + ulint page_no; + + if (!page_is_leaf(buf_block_get_frame(block))) { + + return; + } + + space = buf_block_get_space(block); + page_no = buf_block_get_page_no(block); + bitmap_page = ibuf_bitmap_get_map_page(space, page_no, zip_size, mtr); +#ifdef UNIV_IBUF_DEBUG +# if 0 + fprintf(stderr, + "Setting space %lu page %lu free bits to %lu should be %lu\n", + space, page_no, val, + ibuf_index_page_calc_free(zip_size, block)); +# endif + + ut_a(val <= ibuf_index_page_calc_free(zip_size, block)); +#endif /* UNIV_IBUF_DEBUG */ + ibuf_bitmap_page_set_bits(bitmap_page, page_no, zip_size, + IBUF_BITMAP_FREE, val, mtr); +} + +/**************************************************************************** +Sets the free bit of the page in the ibuf bitmap. This is done in a separate +mini-transaction, hence this operation does not restrict further work to only +ibuf bitmap operations, which would result if the latch to the bitmap page +were kept. */ +UNIV_INTERN +void +ibuf_set_free_bits_func( +/*====================*/ + buf_block_t* block, /* in: index page of a non-clustered index; + free bit is reset if page level is 0 */ +#ifdef UNIV_IBUF_DEBUG + ulint max_val,/* in: ULINT_UNDEFINED or a maximum + value which the bits must have before + setting; this is for debugging */ +#endif /* UNIV_IBUF_DEBUG */ + ulint val) /* in: value to set: < 4 */ +{ + mtr_t mtr; + page_t* page; + page_t* bitmap_page; + ulint space; + ulint page_no; + ulint zip_size; + + page = buf_block_get_frame(block); + + if (!page_is_leaf(page)) { + + return; + } + + mtr_start(&mtr); + + space = buf_block_get_space(block); + page_no = buf_block_get_page_no(block); + zip_size = buf_block_get_zip_size(block); + bitmap_page = ibuf_bitmap_get_map_page(space, page_no, zip_size, &mtr); + +#ifdef UNIV_IBUF_DEBUG + if (max_val != ULINT_UNDEFINED) { + ulint old_val; + + old_val = ibuf_bitmap_page_get_bits( + bitmap_page, page_no, zip_size, + IBUF_BITMAP_FREE, &mtr); +# if 0 + if (old_val != max_val) { + fprintf(stderr, + "Ibuf: page %lu old val %lu max val %lu\n", + page_get_page_no(page), + old_val, max_val); + } +# endif + + ut_a(old_val <= max_val); + } +# if 0 + fprintf(stderr, "Setting page no %lu free bits to %lu should be %lu\n", + page_get_page_no(page), val, + ibuf_index_page_calc_free(zip_size, block)); +# endif + + ut_a(val <= ibuf_index_page_calc_free(zip_size, block)); +#endif /* UNIV_IBUF_DEBUG */ + ibuf_bitmap_page_set_bits(bitmap_page, page_no, zip_size, + IBUF_BITMAP_FREE, val, &mtr); + mtr_commit(&mtr); +} + +/**************************************************************************** +Resets the free bits of the page in the ibuf bitmap. This is done in a +separate mini-transaction, hence this operation does not restrict +further work to only ibuf bitmap operations, which would result if the +latch to the bitmap page were kept. NOTE: The free bits in the insert +buffer bitmap must never exceed the free space on a page. It is safe +to decrement or reset the bits in the bitmap in a mini-transaction +that is committed before the mini-transaction that affects the free +space. */ +UNIV_INTERN +void +ibuf_reset_free_bits( +/*=================*/ + buf_block_t* block) /* in: index page; free bits are set to 0 + if the index is a non-clustered + non-unique, and page level is 0 */ +{ + ibuf_set_free_bits(block, 0, ULINT_UNDEFINED); +} + +/************************************************************************** +Updates the free bits for an uncompressed page to reflect the present +state. Does this in the mtr given, which means that the latching +order rules virtually prevent any further operations for this OS +thread until mtr is committed. NOTE: The free bits in the insert +buffer bitmap must never exceed the free space on a page. It is safe +to set the free bits in the same mini-transaction that updated the +page. */ +UNIV_INTERN +void +ibuf_update_free_bits_low( +/*======================*/ + const buf_block_t* block, /* in: index page */ + ulint max_ins_size, /* in: value of + maximum insert size + with reorganize before + the latest operation + performed to the page */ + mtr_t* mtr) /* in/out: mtr */ +{ + ulint before; + ulint after; + + ut_a(!buf_block_get_page_zip(block)); + + before = ibuf_index_page_calc_free_bits(0, max_ins_size); + + after = ibuf_index_page_calc_free(0, block); + + /* This approach cannot be used on compressed pages, since the + computed value of "before" often does not match the current + state of the bitmap. This is because the free space may + increase or decrease when a compressed page is reorganized. */ + if (before != after) { + ibuf_set_free_bits_low(0, block, after, mtr); + } +} + +/************************************************************************** +Updates the free bits for a compressed page to reflect the present +state. Does this in the mtr given, which means that the latching +order rules virtually prevent any further operations for this OS +thread until mtr is committed. NOTE: The free bits in the insert +buffer bitmap must never exceed the free space on a page. It is safe +to set the free bits in the same mini-transaction that updated the +page. */ +UNIV_INTERN +void +ibuf_update_free_bits_zip( +/*======================*/ + buf_block_t* block, /* in/out: index page */ + mtr_t* mtr) /* in/out: mtr */ +{ + page_t* bitmap_page; + ulint space; + ulint page_no; + ulint zip_size; + ulint after; + + space = buf_block_get_space(block); + page_no = buf_block_get_page_no(block); + zip_size = buf_block_get_zip_size(block); + + ut_a(page_is_leaf(buf_block_get_frame(block))); + ut_a(zip_size); + + bitmap_page = ibuf_bitmap_get_map_page(space, page_no, zip_size, mtr); + + after = ibuf_index_page_calc_free_zip(zip_size, block); + + if (after == 0) { + /* We move the page to the front of the buffer pool LRU list: + the purpose of this is to prevent those pages to which we + cannot make inserts using the insert buffer from slipping + out of the buffer pool */ + + buf_page_make_young(&block->page); + } + + ibuf_bitmap_page_set_bits(bitmap_page, page_no, zip_size, + IBUF_BITMAP_FREE, after, mtr); +} + +/************************************************************************** +Updates the free bits for the two pages to reflect the present state. +Does this in the mtr given, which means that the latching order rules +virtually prevent any further operations until mtr is committed. +NOTE: The free bits in the insert buffer bitmap must never exceed the +free space on a page. It is safe to set the free bits in the same +mini-transaction that updated the pages. */ +UNIV_INTERN +void +ibuf_update_free_bits_for_two_pages_low( +/*====================================*/ + ulint zip_size,/* in: compressed page size in bytes; + 0 for uncompressed pages */ + buf_block_t* block1, /* in: index page */ + buf_block_t* block2, /* in: index page */ + mtr_t* mtr) /* in: mtr */ +{ + ulint state; + + /* As we have to x-latch two random bitmap pages, we have to acquire + the bitmap mutex to prevent a deadlock with a similar operation + performed by another OS thread. */ + + mutex_enter(&ibuf_bitmap_mutex); + + state = ibuf_index_page_calc_free(zip_size, block1); + + ibuf_set_free_bits_low(zip_size, block1, state, mtr); + + state = ibuf_index_page_calc_free(zip_size, block2); + + ibuf_set_free_bits_low(zip_size, block2, state, mtr); + + mutex_exit(&ibuf_bitmap_mutex); +} + +/************************************************************************** +Returns TRUE if the page is one of the fixed address ibuf pages. */ +UNIV_INLINE +ibool +ibuf_fixed_addr_page( +/*=================*/ + /* out: TRUE if a fixed address ibuf i/o page */ + ulint space, /* in: space id */ + ulint zip_size,/* in: compressed page size in bytes; + 0 for uncompressed pages */ + ulint page_no)/* in: page number */ +{ + return((space == IBUF_SPACE_ID && page_no == IBUF_TREE_ROOT_PAGE_NO) + || ibuf_bitmap_page(zip_size, page_no)); +} + +/*************************************************************************** +Checks if a page is a level 2 or 3 page in the ibuf hierarchy of pages. +Must not be called when recv_no_ibuf_operations==TRUE. */ +UNIV_INTERN +ibool +ibuf_page( +/*======*/ + /* out: TRUE if level 2 or level 3 page */ + ulint space, /* in: space id */ + ulint zip_size,/* in: compressed page size in bytes, or 0 */ + ulint page_no,/* in: page number */ + mtr_t* mtr) /* in: mtr which will contain an x-latch to the + bitmap page if the page is not one of the fixed + address ibuf pages, or NULL, in which case a new + transaction is created. */ +{ + ibool ret; + mtr_t local_mtr; + page_t* bitmap_page; + + ut_ad(!recv_no_ibuf_operations); + + if (ibuf_fixed_addr_page(space, zip_size, page_no)) { + + return(TRUE); + } else if (space != IBUF_SPACE_ID) { + + return(FALSE); + } + + ut_ad(fil_space_get_type(IBUF_SPACE_ID) == FIL_TABLESPACE); + + if (mtr == NULL) { + mtr = &local_mtr; + mtr_start(mtr); + } + + bitmap_page = ibuf_bitmap_get_map_page(space, page_no, zip_size, mtr); + + ret = ibuf_bitmap_page_get_bits(bitmap_page, page_no, zip_size, + IBUF_BITMAP_IBUF, mtr); + + if (mtr == &local_mtr) { + mtr_commit(mtr); + } + + return(ret); +} + +/************************************************************************ +Returns the page number field of an ibuf record. */ +static +ulint +ibuf_rec_get_page_no( +/*=================*/ + /* out: page number */ + const rec_t* rec) /* in: ibuf record */ +{ + const byte* field; + ulint len; + + ut_ad(ibuf_inside()); + ut_ad(rec_get_n_fields_old(rec) > 2); + + field = rec_get_nth_field_old(rec, 1, &len); + + if (len == 1) { + /* This is of the >= 4.1.x record format */ + ut_a(trx_sys_multiple_tablespace_format); + + field = rec_get_nth_field_old(rec, 2, &len); + } else { + ut_a(trx_doublewrite_must_reset_space_ids); + ut_a(!trx_sys_multiple_tablespace_format); + + field = rec_get_nth_field_old(rec, 0, &len); + } + + ut_a(len == 4); + + return(mach_read_from_4(field)); +} + +/************************************************************************ +Returns the space id field of an ibuf record. For < 4.1.x format records +returns 0. */ +static +ulint +ibuf_rec_get_space( +/*===============*/ + /* out: space id */ + const rec_t* rec) /* in: ibuf record */ +{ + const byte* field; + ulint len; + + ut_ad(ibuf_inside()); + ut_ad(rec_get_n_fields_old(rec) > 2); + + field = rec_get_nth_field_old(rec, 1, &len); + + if (len == 1) { + /* This is of the >= 4.1.x record format */ + + ut_a(trx_sys_multiple_tablespace_format); + field = rec_get_nth_field_old(rec, 0, &len); + ut_a(len == 4); + + return(mach_read_from_4(field)); + } + + ut_a(trx_doublewrite_must_reset_space_ids); + ut_a(!trx_sys_multiple_tablespace_format); + + return(0); +} + +/************************************************************************ +Creates a dummy index for inserting a record to a non-clustered index. +*/ +static +dict_index_t* +ibuf_dummy_index_create( +/*====================*/ + /* out: dummy index */ + ulint n, /* in: number of fields */ + ibool comp) /* in: TRUE=use compact record format */ +{ + dict_table_t* table; + dict_index_t* index; + + table = dict_mem_table_create("IBUF_DUMMY", + DICT_HDR_SPACE, n, + comp ? DICT_TF_COMPACT : 0); + + index = dict_mem_index_create("IBUF_DUMMY", "IBUF_DUMMY", + DICT_HDR_SPACE, 0, n); + + index->table = table; + + /* avoid ut_ad(index->cached) in dict_index_get_n_unique_in_tree */ + index->cached = TRUE; + + return(index); +} +/************************************************************************ +Add a column to the dummy index */ +static +void +ibuf_dummy_index_add_col( +/*=====================*/ + dict_index_t* index, /* in: dummy index */ + const dtype_t* type, /* in: the data type of the column */ + ulint len) /* in: length of the column */ +{ + ulint i = index->table->n_def; + dict_mem_table_add_col(index->table, NULL, NULL, + dtype_get_mtype(type), + dtype_get_prtype(type), + dtype_get_len(type)); + dict_index_add_col(index, index->table, + dict_table_get_nth_col(index->table, i), len); +} +/************************************************************************ +Deallocates a dummy index for inserting a record to a non-clustered index. +*/ +static +void +ibuf_dummy_index_free( +/*==================*/ + dict_index_t* index) /* in: dummy index */ +{ + dict_table_t* table = index->table; + + dict_mem_index_free(index); + dict_mem_table_free(table); +} + +/************************************************************************* +Builds the entry to insert into a non-clustered index when we have the +corresponding record in an ibuf index. */ +UNIV_INLINE +dtuple_t* +ibuf_build_entry_pre_4_1_x( +/*=======================*/ + /* out, own: entry to insert to + a non-clustered index; NOTE that + as we copy pointers to fields in + ibuf_rec, the caller must hold a + latch to the ibuf_rec page as long + as the entry is used! */ + const rec_t* ibuf_rec, /* in: record in an insert buffer */ + mem_heap_t* heap, /* in: heap where built */ + dict_index_t** pindex) /* out, own: dummy index that + describes the entry */ +{ + ulint i; + ulint len; + const byte* types; + dtuple_t* tuple; + ulint n_fields; + + ut_a(trx_doublewrite_must_reset_space_ids); + ut_a(!trx_sys_multiple_tablespace_format); + + n_fields = rec_get_n_fields_old(ibuf_rec) - 2; + tuple = dtuple_create(heap, n_fields); + types = rec_get_nth_field_old(ibuf_rec, 1, &len); + + ut_a(len == n_fields * DATA_ORDER_NULL_TYPE_BUF_SIZE); + + for (i = 0; i < n_fields; i++) { + const byte* data; + dfield_t* field; + + field = dtuple_get_nth_field(tuple, i); + + data = rec_get_nth_field_old(ibuf_rec, i + 2, &len); + + dfield_set_data(field, data, len); + + dtype_read_for_order_and_null_size( + dfield_get_type(field), + types + i * DATA_ORDER_NULL_TYPE_BUF_SIZE); + } + + *pindex = ibuf_dummy_index_create(n_fields, FALSE); + + return(tuple); +} + +/************************************************************************* +Builds the entry to insert into a non-clustered index when we have the +corresponding record in an ibuf index. */ +static +dtuple_t* +ibuf_build_entry_from_ibuf_rec( +/*===========================*/ + /* out, own: entry to insert to + a non-clustered index; NOTE that + as we copy pointers to fields in + ibuf_rec, the caller must hold a + latch to the ibuf_rec page as long + as the entry is used! */ + const rec_t* ibuf_rec, /* in: record in an insert buffer */ + mem_heap_t* heap, /* in: heap where built */ + dict_index_t** pindex) /* out, own: dummy index that + describes the entry */ +{ + dtuple_t* tuple; + dfield_t* field; + ulint n_fields; + const byte* types; + const byte* data; + ulint len; + ulint i; + dict_index_t* index; + + data = rec_get_nth_field_old(ibuf_rec, 1, &len); + + if (len > 1) { + /* This a < 4.1.x format record */ + + return(ibuf_build_entry_pre_4_1_x(ibuf_rec, heap, pindex)); + } + + /* This a >= 4.1.x format record */ + + ut_a(trx_sys_multiple_tablespace_format); + ut_a(*data == 0); + ut_a(rec_get_n_fields_old(ibuf_rec) > 4); + + n_fields = rec_get_n_fields_old(ibuf_rec) - 4; + + tuple = dtuple_create(heap, n_fields); + + types = rec_get_nth_field_old(ibuf_rec, 3, &len); + + ut_a(len % DATA_NEW_ORDER_NULL_TYPE_BUF_SIZE <= 1); + index = ibuf_dummy_index_create( + n_fields, len % DATA_NEW_ORDER_NULL_TYPE_BUF_SIZE); + + if (len % DATA_NEW_ORDER_NULL_TYPE_BUF_SIZE) { + /* compact record format */ + len--; + ut_a(*types == 0); + types++; + } + + ut_a(len == n_fields * DATA_NEW_ORDER_NULL_TYPE_BUF_SIZE); + + for (i = 0; i < n_fields; i++) { + field = dtuple_get_nth_field(tuple, i); + + data = rec_get_nth_field_old(ibuf_rec, i + 4, &len); + + dfield_set_data(field, data, len); + + dtype_new_read_for_order_and_null_size( + dfield_get_type(field), + types + i * DATA_NEW_ORDER_NULL_TYPE_BUF_SIZE); + + ibuf_dummy_index_add_col(index, dfield_get_type(field), len); + } + + /* Prevent an ut_ad() failure in page_zip_write_rec() by + adding system columns to the dummy table pointed to by the + dummy secondary index. The insert buffer is only used for + secondary indexes, whose records never contain any system + columns, such as DB_TRX_ID. */ + ut_d(dict_table_add_system_columns(index->table, index->table->heap)); + + *pindex = index; + + return(tuple); +} + +/************************************************************************ +Returns the space taken by a stored non-clustered index entry if converted to +an index record. */ +static +ulint +ibuf_rec_get_volume( +/*================*/ + /* out: size of index record in bytes + + an upper limit of the space taken in the + page directory */ + const rec_t* ibuf_rec)/* in: ibuf record */ +{ + dtype_t dtype; + ibool new_format = FALSE; + ulint data_size = 0; + ulint n_fields; + const byte* types; + const byte* data; + ulint len; + ulint i; + + ut_ad(ibuf_inside()); + ut_ad(rec_get_n_fields_old(ibuf_rec) > 2); + + data = rec_get_nth_field_old(ibuf_rec, 1, &len); + + if (len > 1) { + /* < 4.1.x format record */ + + ut_a(trx_doublewrite_must_reset_space_ids); + ut_a(!trx_sys_multiple_tablespace_format); + + n_fields = rec_get_n_fields_old(ibuf_rec) - 2; + + types = rec_get_nth_field_old(ibuf_rec, 1, &len); + + ut_ad(len == n_fields * DATA_ORDER_NULL_TYPE_BUF_SIZE); + } else { + /* >= 4.1.x format record */ + + ut_a(trx_sys_multiple_tablespace_format); + ut_a(*data == 0); + + types = rec_get_nth_field_old(ibuf_rec, 3, &len); + + ut_a(len % DATA_NEW_ORDER_NULL_TYPE_BUF_SIZE <= 1); + if (len % DATA_NEW_ORDER_NULL_TYPE_BUF_SIZE) { + /* compact record format */ + ulint volume; + dict_index_t* dummy_index; + mem_heap_t* heap = mem_heap_create(500); + dtuple_t* entry = ibuf_build_entry_from_ibuf_rec( + ibuf_rec, heap, &dummy_index); + volume = rec_get_converted_size(dummy_index, entry, 0); + ibuf_dummy_index_free(dummy_index); + mem_heap_free(heap); + return(volume + page_dir_calc_reserved_space(1)); + } + + n_fields = rec_get_n_fields_old(ibuf_rec) - 4; + + new_format = TRUE; + } + + for (i = 0; i < n_fields; i++) { + if (new_format) { + data = rec_get_nth_field_old(ibuf_rec, i + 4, &len); + + dtype_new_read_for_order_and_null_size( + &dtype, types + i + * DATA_NEW_ORDER_NULL_TYPE_BUF_SIZE); + } else { + data = rec_get_nth_field_old(ibuf_rec, i + 2, &len); + + dtype_read_for_order_and_null_size( + &dtype, types + i + * DATA_ORDER_NULL_TYPE_BUF_SIZE); + } + + if (len == UNIV_SQL_NULL) { + data_size += dtype_get_sql_null_size(&dtype); + } else { + data_size += len; + } + } + + return(data_size + rec_get_converted_extra_size(data_size, n_fields, 0) + + page_dir_calc_reserved_space(1)); +} + +/************************************************************************* +Builds the tuple to insert to an ibuf tree when we have an entry for a +non-clustered index. */ +static +dtuple_t* +ibuf_entry_build( +/*=============*/ + /* out, own: entry to insert into an ibuf + index tree; NOTE that the original entry + must be kept because we copy pointers to its + fields */ + dict_index_t* index, /* in: non-clustered index */ + const dtuple_t* entry, /* in: entry for a non-clustered index */ + ulint space, /* in: space id */ + ulint page_no,/* in: index page number where entry should + be inserted */ + mem_heap_t* heap) /* in: heap into which to build */ +{ + dtuple_t* tuple; + dfield_t* field; + const dfield_t* entry_field; + ulint n_fields; + byte* buf; + byte* buf2; + ulint i; + + /* Starting from 4.1.x, we have to build a tuple whose + (1) first field is the space id, + (2) the second field a single marker byte (0) to tell that this + is a new format record, + (3) the third contains the page number, and + (4) the fourth contains the relevent type information of each data + field; the length of this field % DATA_NEW_ORDER_NULL_TYPE_BUF_SIZE is + (a) 0 for b-trees in the old format, and + (b) 1 for b-trees in the compact format, the first byte of the field + being the marker (0); + (5) and the rest of the fields are copied from entry. All fields + in the tuple are ordered like the type binary in our insert buffer + tree. */ + + n_fields = dtuple_get_n_fields(entry); + + tuple = dtuple_create(heap, n_fields + 4); + + /* Store the space id in tuple */ + + field = dtuple_get_nth_field(tuple, 0); + + buf = mem_heap_alloc(heap, 4); + + mach_write_to_4(buf, space); + + dfield_set_data(field, buf, 4); + + /* Store the marker byte field in tuple */ + + field = dtuple_get_nth_field(tuple, 1); + + buf = mem_heap_alloc(heap, 1); + + /* We set the marker byte zero */ + + mach_write_to_1(buf, 0); + + dfield_set_data(field, buf, 1); + + /* Store the page number in tuple */ + + field = dtuple_get_nth_field(tuple, 2); + + buf = mem_heap_alloc(heap, 4); + + mach_write_to_4(buf, page_no); + + dfield_set_data(field, buf, 4); + + /* Store the type info in buf2, and add the fields from entry to + tuple */ + buf2 = mem_heap_alloc(heap, n_fields + * DATA_NEW_ORDER_NULL_TYPE_BUF_SIZE + + dict_table_is_comp(index->table)); + if (dict_table_is_comp(index->table)) { + *buf2++ = 0; /* write the compact format indicator */ + } + for (i = 0; i < n_fields; i++) { + ulint fixed_len; + const dict_field_t* ifield; + + /* We add 4 below because we have the 4 extra fields at the + start of an ibuf record */ + + field = dtuple_get_nth_field(tuple, i + 4); + entry_field = dtuple_get_nth_field(entry, i); + dfield_copy(field, entry_field); + + ifield = dict_index_get_nth_field(index, i); + /* Prefix index columns of fixed-length columns are of + fixed length. However, in the function call below, + dfield_get_type(entry_field) contains the fixed length + of the column in the clustered index. Replace it with + the fixed length of the secondary index column. */ + fixed_len = ifield->fixed_len; + +#ifdef UNIV_DEBUG + if (fixed_len) { + /* dict_index_add_col() should guarantee these */ + ut_ad(fixed_len <= (ulint) + dfield_get_type(entry_field)->len); + if (ifield->prefix_len) { + ut_ad(ifield->prefix_len == fixed_len); + } else { + ut_ad(fixed_len == (ulint) + dfield_get_type(entry_field)->len); + } + } +#endif /* UNIV_DEBUG */ + + dtype_new_store_for_order_and_null_size( + buf2 + i * DATA_NEW_ORDER_NULL_TYPE_BUF_SIZE, + dfield_get_type(entry_field), fixed_len); + } + + /* Store the type info in buf2 to field 3 of tuple */ + + field = dtuple_get_nth_field(tuple, 3); + + if (dict_table_is_comp(index->table)) { + buf2--; + } + + dfield_set_data(field, buf2, n_fields + * DATA_NEW_ORDER_NULL_TYPE_BUF_SIZE + + dict_table_is_comp(index->table)); + /* Set all the types in the new tuple binary */ + + dtuple_set_types_binary(tuple, n_fields + 4); + + return(tuple); +} + +/************************************************************************* +Builds a search tuple used to search buffered inserts for an index page. +This is for < 4.1.x format records */ +static +dtuple_t* +ibuf_search_tuple_build( +/*====================*/ + /* out, own: search tuple */ + ulint space, /* in: space id */ + ulint page_no,/* in: index page number */ + mem_heap_t* heap) /* in: heap into which to build */ +{ + dtuple_t* tuple; + dfield_t* field; + byte* buf; + + ut_a(space == 0); + ut_a(trx_doublewrite_must_reset_space_ids); + ut_a(!trx_sys_multiple_tablespace_format); + + tuple = dtuple_create(heap, 1); + + /* Store the page number in tuple */ + + field = dtuple_get_nth_field(tuple, 0); + + buf = mem_heap_alloc(heap, 4); + + mach_write_to_4(buf, page_no); + + dfield_set_data(field, buf, 4); + + dtuple_set_types_binary(tuple, 1); + + return(tuple); +} + +/************************************************************************* +Builds a search tuple used to search buffered inserts for an index page. +This is for >= 4.1.x format records. */ +static +dtuple_t* +ibuf_new_search_tuple_build( +/*========================*/ + /* out, own: search tuple */ + ulint space, /* in: space id */ + ulint page_no,/* in: index page number */ + mem_heap_t* heap) /* in: heap into which to build */ +{ + dtuple_t* tuple; + dfield_t* field; + byte* buf; + + ut_a(trx_sys_multiple_tablespace_format); + + tuple = dtuple_create(heap, 3); + + /* Store the space id in tuple */ + + field = dtuple_get_nth_field(tuple, 0); + + buf = mem_heap_alloc(heap, 4); + + mach_write_to_4(buf, space); + + dfield_set_data(field, buf, 4); + + /* Store the new format record marker byte */ + + field = dtuple_get_nth_field(tuple, 1); + + buf = mem_heap_alloc(heap, 1); + + mach_write_to_1(buf, 0); + + dfield_set_data(field, buf, 1); + + /* Store the page number in tuple */ + + field = dtuple_get_nth_field(tuple, 2); + + buf = mem_heap_alloc(heap, 4); + + mach_write_to_4(buf, page_no); + + dfield_set_data(field, buf, 4); + + dtuple_set_types_binary(tuple, 3); + + return(tuple); +} + +/************************************************************************* +Checks if there are enough pages in the free list of the ibuf tree that we +dare to start a pessimistic insert to the insert buffer. */ +UNIV_INLINE +ibool +ibuf_data_enough_free_for_insert(void) +/*==================================*/ + /* out: TRUE if enough free pages in list */ +{ + ut_ad(mutex_own(&ibuf_mutex)); + + /* We want a big margin of free pages, because a B-tree can sometimes + grow in size also if records are deleted from it, as the node pointers + can change, and we must make sure that we are able to delete the + inserts buffered for pages that we read to the buffer pool, without + any risk of running out of free space in the insert buffer. */ + + return(ibuf->free_list_len >= (ibuf->size / 2) + 3 * ibuf->height); +} + +/************************************************************************* +Checks if there are enough pages in the free list of the ibuf tree that we +should remove them and free to the file space management. */ +UNIV_INLINE +ibool +ibuf_data_too_much_free(void) +/*=========================*/ + /* out: TRUE if enough free pages in list */ +{ + ut_ad(mutex_own(&ibuf_mutex)); + + return(ibuf->free_list_len >= 3 + (ibuf->size / 2) + 3 * ibuf->height); +} + +/************************************************************************* +Allocates a new page from the ibuf file segment and adds it to the free +list. */ +static +ulint +ibuf_add_free_page(void) +/*====================*/ + /* out: DB_SUCCESS, or DB_STRONG_FAIL + if no space left */ +{ + mtr_t mtr; + page_t* header_page; + ulint flags; + ulint zip_size; + ulint page_no; + page_t* page; + page_t* root; + page_t* bitmap_page; + + mtr_start(&mtr); + + /* Acquire the fsp latch before the ibuf header, obeying the latching + order */ + mtr_x_lock(fil_space_get_latch(IBUF_SPACE_ID, &flags), &mtr); + zip_size = dict_table_flags_to_zip_size(flags); + + header_page = ibuf_header_page_get(&mtr); + + /* Allocate a new page: NOTE that if the page has been a part of a + non-clustered index which has subsequently been dropped, then the + page may have buffered inserts in the insert buffer, and these + should be deleted from there. These get deleted when the page + allocation creates the page in buffer. Thus the call below may end + up calling the insert buffer routines and, as we yet have no latches + to insert buffer tree pages, these routines can run without a risk + of a deadlock. This is the reason why we created a special ibuf + header page apart from the ibuf tree. */ + + page_no = fseg_alloc_free_page( + header_page + IBUF_HEADER + IBUF_TREE_SEG_HEADER, 0, FSP_UP, + &mtr); + + if (page_no == FIL_NULL) { + mtr_commit(&mtr); + + return(DB_STRONG_FAIL); + } + + { + buf_block_t* block; + + block = buf_page_get( + IBUF_SPACE_ID, 0, page_no, RW_X_LATCH, &mtr); + + buf_block_dbg_add_level(block, SYNC_TREE_NODE_NEW); + + + page = buf_block_get_frame(block); + } + + ibuf_enter(); + + mutex_enter(&ibuf_mutex); + + root = ibuf_tree_root_get(&mtr); + + /* Add the page to the free list and update the ibuf size data */ + + flst_add_last(root + PAGE_HEADER + PAGE_BTR_IBUF_FREE_LIST, + page + PAGE_HEADER + PAGE_BTR_IBUF_FREE_LIST_NODE, &mtr); + + mlog_write_ulint(page + FIL_PAGE_TYPE, FIL_PAGE_IBUF_FREE_LIST, + MLOG_2BYTES, &mtr); + + ibuf->seg_size++; + ibuf->free_list_len++; + + /* Set the bit indicating that this page is now an ibuf tree page + (level 2 page) */ + + bitmap_page = ibuf_bitmap_get_map_page( + IBUF_SPACE_ID, page_no, zip_size, &mtr); + + ibuf_bitmap_page_set_bits( + bitmap_page, page_no, zip_size, IBUF_BITMAP_IBUF, TRUE, &mtr); + + mtr_commit(&mtr); + + mutex_exit(&ibuf_mutex); + + ibuf_exit(); + + return(DB_SUCCESS); +} + +/************************************************************************* +Removes a page from the free list and frees it to the fsp system. */ +static +void +ibuf_remove_free_page(void) +/*=======================*/ +{ + mtr_t mtr; + mtr_t mtr2; + page_t* header_page; + ulint flags; + ulint zip_size; + ulint page_no; + page_t* page; + page_t* root; + page_t* bitmap_page; + + mtr_start(&mtr); + + /* Acquire the fsp latch before the ibuf header, obeying the latching + order */ + mtr_x_lock(fil_space_get_latch(IBUF_SPACE_ID, &flags), &mtr); + zip_size = dict_table_flags_to_zip_size(flags); + + header_page = ibuf_header_page_get(&mtr); + + /* Prevent pessimistic inserts to insert buffer trees for a while */ + mutex_enter(&ibuf_pessimistic_insert_mutex); + + ibuf_enter(); + + mutex_enter(&ibuf_mutex); + + if (!ibuf_data_too_much_free()) { + + mutex_exit(&ibuf_mutex); + + ibuf_exit(); + + mutex_exit(&ibuf_pessimistic_insert_mutex); + + mtr_commit(&mtr); + + return; + } + + mtr_start(&mtr2); + + root = ibuf_tree_root_get(&mtr2); + + page_no = flst_get_last(root + PAGE_HEADER + PAGE_BTR_IBUF_FREE_LIST, + &mtr2).page; + + /* NOTE that we must release the latch on the ibuf tree root + because in fseg_free_page we access level 1 pages, and the root + is a level 2 page. */ + + mtr_commit(&mtr2); + mutex_exit(&ibuf_mutex); + + ibuf_exit(); + + /* Since pessimistic inserts were prevented, we know that the + page is still in the free list. NOTE that also deletes may take + pages from the free list, but they take them from the start, and + the free list was so long that they cannot have taken the last + page from it. */ + + fseg_free_page(header_page + IBUF_HEADER + IBUF_TREE_SEG_HEADER, + IBUF_SPACE_ID, page_no, &mtr); + +#ifdef UNIV_DEBUG_FILE_ACCESSES + buf_page_reset_file_page_was_freed(IBUF_SPACE_ID, page_no); +#endif + + ibuf_enter(); + + mutex_enter(&ibuf_mutex); + + root = ibuf_tree_root_get(&mtr); + + ut_ad(page_no == flst_get_last(root + PAGE_HEADER + + PAGE_BTR_IBUF_FREE_LIST, &mtr).page); + + { + buf_block_t* block; + + block = buf_page_get( + IBUF_SPACE_ID, 0, page_no, RW_X_LATCH, &mtr); + + buf_block_dbg_add_level(block, SYNC_TREE_NODE); + + + page = buf_block_get_frame(block); + } + + /* Remove the page from the free list and update the ibuf size data */ + + flst_remove(root + PAGE_HEADER + PAGE_BTR_IBUF_FREE_LIST, + page + PAGE_HEADER + PAGE_BTR_IBUF_FREE_LIST_NODE, &mtr); + + ibuf->seg_size--; + ibuf->free_list_len--; + + mutex_exit(&ibuf_pessimistic_insert_mutex); + + /* Set the bit indicating that this page is no more an ibuf tree page + (level 2 page) */ + + bitmap_page = ibuf_bitmap_get_map_page( + IBUF_SPACE_ID, page_no, zip_size, &mtr); + + ibuf_bitmap_page_set_bits( + bitmap_page, page_no, zip_size, IBUF_BITMAP_IBUF, FALSE, &mtr); + +#ifdef UNIV_DEBUG_FILE_ACCESSES + buf_page_set_file_page_was_freed(IBUF_SPACE_ID, page_no); +#endif + mtr_commit(&mtr); + + mutex_exit(&ibuf_mutex); + + ibuf_exit(); +} + +/*************************************************************************** +Frees excess pages from the ibuf free list. This function is called when an OS +thread calls fsp services to allocate a new file segment, or a new page to a +file segment, and the thread did not own the fsp latch before this call. */ +UNIV_INTERN +void +ibuf_free_excess_pages(void) +/*========================*/ +{ + ulint i; + +#ifdef UNIV_SYNC_DEBUG + ut_ad(rw_lock_own(fil_space_get_latch(IBUF_SPACE_ID, NULL), + RW_LOCK_EX)); +#endif /* UNIV_SYNC_DEBUG */ + + ut_ad(rw_lock_get_x_lock_count( + fil_space_get_latch(IBUF_SPACE_ID, NULL)) == 1); + + ut_ad(!ibuf_inside()); + + /* NOTE: We require that the thread did not own the latch before, + because then we know that we can obey the correct latching order + for ibuf latches */ + + if (!ibuf) { + /* Not yet initialized; not sure if this is possible, but + does no harm to check for it. */ + + return; + } + + /* Free at most a few pages at a time, so that we do not delay the + requested service too much */ + + for (i = 0; i < 4; i++) { + + mutex_enter(&ibuf_mutex); + + if (!ibuf_data_too_much_free()) { + + mutex_exit(&ibuf_mutex); + + return; + } + + mutex_exit(&ibuf_mutex); + + ibuf_remove_free_page(); + } +} + +/************************************************************************* +Reads page numbers from a leaf in an ibuf tree. */ +static +ulint +ibuf_get_merge_page_nos( +/*====================*/ + /* out: a lower limit for the combined volume + of records which will be merged */ + ibool contract,/* in: TRUE if this function is called to + contract the tree, FALSE if this is called + when a single page becomes full and we look + if it pays to read also nearby pages */ + rec_t* rec, /* in: record from which we read up and down + in the chain of records */ + ulint* space_ids,/* in/out: space id's of the pages */ + ib_int64_t* space_versions,/* in/out: tablespace version + timestamps; used to prevent reading in old + pages after DISCARD + IMPORT tablespace */ + ulint* page_nos,/* in/out: buffer for at least + IBUF_MAX_N_PAGES_MERGED many page numbers; + the page numbers are in an ascending order */ + ulint* n_stored)/* out: number of page numbers stored to + page_nos in this function */ +{ + ulint prev_page_no; + ulint prev_space_id; + ulint first_page_no; + ulint first_space_id; + ulint rec_page_no; + ulint rec_space_id; + ulint sum_volumes; + ulint volume_for_page; + ulint rec_volume; + ulint limit; + ulint n_pages; + + *n_stored = 0; + + limit = ut_min(IBUF_MAX_N_PAGES_MERGED, buf_pool->curr_size / 4); + + if (page_rec_is_supremum(rec)) { + + rec = page_rec_get_prev(rec); + } + + if (page_rec_is_infimum(rec)) { + + rec = page_rec_get_next(rec); + } + + if (page_rec_is_supremum(rec)) { + + return(0); + } + + first_page_no = ibuf_rec_get_page_no(rec); + first_space_id = ibuf_rec_get_space(rec); + n_pages = 0; + prev_page_no = 0; + prev_space_id = 0; + + /* Go backwards from the first rec until we reach the border of the + 'merge area', or the page start or the limit of storeable pages is + reached */ + + while (!page_rec_is_infimum(rec) && UNIV_LIKELY(n_pages < limit)) { + + rec_page_no = ibuf_rec_get_page_no(rec); + rec_space_id = ibuf_rec_get_space(rec); + + if (rec_space_id != first_space_id + || (rec_page_no / IBUF_MERGE_AREA) + != (first_page_no / IBUF_MERGE_AREA)) { + + break; + } + + if (rec_page_no != prev_page_no + || rec_space_id != prev_space_id) { + n_pages++; + } + + prev_page_no = rec_page_no; + prev_space_id = rec_space_id; + + rec = page_rec_get_prev(rec); + } + + rec = page_rec_get_next(rec); + + /* At the loop start there is no prev page; we mark this with a pair + of space id, page no (0, 0) for which there can never be entries in + the insert buffer */ + + prev_page_no = 0; + prev_space_id = 0; + sum_volumes = 0; + volume_for_page = 0; + + while (*n_stored < limit) { + if (page_rec_is_supremum(rec)) { + /* When no more records available, mark this with + another 'impossible' pair of space id, page no */ + rec_page_no = 1; + rec_space_id = 0; + } else { + rec_page_no = ibuf_rec_get_page_no(rec); + rec_space_id = ibuf_rec_get_space(rec); + ut_ad(rec_page_no > IBUF_TREE_ROOT_PAGE_NO); + } + +#ifdef UNIV_IBUF_DEBUG + ut_a(*n_stored < IBUF_MAX_N_PAGES_MERGED); +#endif + if ((rec_space_id != prev_space_id + || rec_page_no != prev_page_no) + && (prev_space_id != 0 || prev_page_no != 0)) { + + if ((prev_page_no == first_page_no + && prev_space_id == first_space_id) + || contract + || (volume_for_page + > ((IBUF_MERGE_THRESHOLD - 1) + * 4 * UNIV_PAGE_SIZE + / IBUF_PAGE_SIZE_PER_FREE_SPACE) + / IBUF_MERGE_THRESHOLD)) { + + space_ids[*n_stored] = prev_space_id; + space_versions[*n_stored] + = fil_space_get_version(prev_space_id); + page_nos[*n_stored] = prev_page_no; + + (*n_stored)++; + + sum_volumes += volume_for_page; + } + + if (rec_space_id != first_space_id + || rec_page_no / IBUF_MERGE_AREA + != first_page_no / IBUF_MERGE_AREA) { + + break; + } + + volume_for_page = 0; + } + + if (rec_page_no == 1 && rec_space_id == 0) { + /* Supremum record */ + + break; + } + + rec_volume = ibuf_rec_get_volume(rec); + + volume_for_page += rec_volume; + + prev_page_no = rec_page_no; + prev_space_id = rec_space_id; + + rec = page_rec_get_next(rec); + } + +#ifdef UNIV_IBUF_DEBUG + ut_a(*n_stored <= IBUF_MAX_N_PAGES_MERGED); +#endif +#if 0 + fprintf(stderr, "Ibuf merge batch %lu pages %lu volume\n", + *n_stored, sum_volumes); +#endif + return(sum_volumes); +} + +/************************************************************************* +Contracts insert buffer trees by reading pages to the buffer pool. */ +static +ulint +ibuf_contract_ext( +/*==============*/ + /* out: a lower limit for the combined size in bytes + of entries which will be merged from ibuf trees to the + pages read, 0 if ibuf is empty */ + ulint* n_pages,/* out: number of pages to which merged */ + ibool sync) /* in: TRUE if the caller wants to wait for the + issued read with the highest tablespace address + to complete */ +{ + btr_pcur_t pcur; + ulint page_nos[IBUF_MAX_N_PAGES_MERGED]; + ulint space_ids[IBUF_MAX_N_PAGES_MERGED]; + ib_int64_t space_versions[IBUF_MAX_N_PAGES_MERGED]; + ulint n_stored; + ulint sum_sizes; + mtr_t mtr; + + *n_pages = 0; + ut_ad(!ibuf_inside()); + + mutex_enter(&ibuf_mutex); + + if (ibuf->empty) { +ibuf_is_empty: + mutex_exit(&ibuf_mutex); + + return(0); + } + + mtr_start(&mtr); + + ibuf_enter(); + + /* Open a cursor to a randomly chosen leaf of the tree, at a random + position within the leaf */ + + btr_pcur_open_at_rnd_pos(ibuf->index, BTR_SEARCH_LEAF, &pcur, &mtr); + + if (page_get_n_recs(btr_pcur_get_page(&pcur)) == 0) { + /* When the ibuf tree is emptied completely, the last record + is removed using an optimistic delete and ibuf_size_update + is not called, causing ibuf->empty to remain FALSE. If we do + not reset it to TRUE here then database shutdown will hang + in the loop in ibuf_contract_for_n_pages. */ + + ibuf->empty = TRUE; + + ibuf_exit(); + + mtr_commit(&mtr); + btr_pcur_close(&pcur); + + goto ibuf_is_empty; + } + + mutex_exit(&ibuf_mutex); + + sum_sizes = ibuf_get_merge_page_nos(TRUE, btr_pcur_get_rec(&pcur), + space_ids, space_versions, + page_nos, &n_stored); +#if 0 /* defined UNIV_IBUF_DEBUG */ + fprintf(stderr, "Ibuf contract sync %lu pages %lu volume %lu\n", + sync, n_stored, sum_sizes); +#endif + ibuf_exit(); + + mtr_commit(&mtr); + btr_pcur_close(&pcur); + + buf_read_ibuf_merge_pages(sync, space_ids, space_versions, page_nos, + n_stored); + *n_pages = n_stored; + + return(sum_sizes + 1); +} + +/************************************************************************* +Contracts insert buffer trees by reading pages to the buffer pool. */ +UNIV_INTERN +ulint +ibuf_contract( +/*==========*/ + /* out: a lower limit for the combined size in bytes + of entries which will be merged from ibuf trees to the + pages read, 0 if ibuf is empty */ + ibool sync) /* in: TRUE if the caller wants to wait for the + issued read with the highest tablespace address + to complete */ +{ + ulint n_pages; + + return(ibuf_contract_ext(&n_pages, sync)); +} + +/************************************************************************* +Contracts insert buffer trees by reading pages to the buffer pool. */ +UNIV_INTERN +ulint +ibuf_contract_for_n_pages( +/*======================*/ + /* out: a lower limit for the combined size in bytes + of entries which will be merged from ibuf trees to the + pages read, 0 if ibuf is empty */ + ibool sync, /* in: TRUE if the caller wants to wait for the + issued read with the highest tablespace address + to complete */ + ulint n_pages)/* in: try to read at least this many pages to + the buffer pool and merge the ibuf contents to + them */ +{ + ulint sum_bytes = 0; + ulint sum_pages = 0; + ulint n_bytes; + ulint n_pag2; + + while (sum_pages < n_pages) { + n_bytes = ibuf_contract_ext(&n_pag2, sync); + + if (n_bytes == 0) { + return(sum_bytes); + } + + sum_bytes += n_bytes; + sum_pages += n_pag2; + } + + return(sum_bytes); +} + +/************************************************************************* +Contract insert buffer trees after insert if they are too big. */ +UNIV_INLINE +void +ibuf_contract_after_insert( +/*=======================*/ + ulint entry_size) /* in: size of a record which was inserted + into an ibuf tree */ +{ + ibool sync; + ulint sum_sizes; + ulint size; + + mutex_enter(&ibuf_mutex); + + if (!srv_ibuf_active_contract) { + if (ibuf->size < ibuf->max_size + IBUF_CONTRACT_ON_INSERT_NON_SYNC) { + mutex_exit(&ibuf_mutex); + + return; + } + } + + sync = FALSE; + + if (ibuf->size >= ibuf->max_size + IBUF_CONTRACT_ON_INSERT_SYNC) { + + sync = TRUE; + } + + mutex_exit(&ibuf_mutex); + + /* Contract at least entry_size many bytes */ + sum_sizes = 0; + size = 1; + + while ((size > 0) && (sum_sizes < entry_size)) { + + size = ibuf_contract(sync); + sum_sizes += size; + } +} + +/************************************************************************* +Gets an upper limit for the combined size of entries buffered in the insert +buffer for a given page. */ +static +ulint +ibuf_get_volume_buffered( +/*=====================*/ + /* out: upper limit for the volume of + buffered inserts for the index page, in bytes; + we may also return UNIV_PAGE_SIZE, if the + entries for the index page span on several + pages in the insert buffer */ + btr_pcur_t* pcur, /* in: pcur positioned at a place in an + insert buffer tree where we would insert an + entry for the index page whose number is + page_no, latch mode has to be BTR_MODIFY_PREV + or BTR_MODIFY_TREE */ + ulint space, /* in: space id */ + ulint page_no,/* in: page number of an index page */ + mtr_t* mtr) /* in: mtr */ +{ + ulint volume; + rec_t* rec; + page_t* page; + ulint prev_page_no; + page_t* prev_page; + ulint next_page_no; + page_t* next_page; + + ut_a(trx_sys_multiple_tablespace_format); + + ut_ad((pcur->latch_mode == BTR_MODIFY_PREV) + || (pcur->latch_mode == BTR_MODIFY_TREE)); + + /* Count the volume of records earlier in the alphabetical order than + pcur */ + + volume = 0; + + rec = btr_pcur_get_rec(pcur); + page = page_align(rec); + + if (page_rec_is_supremum(rec)) { + rec = page_rec_get_prev(rec); + } + + for (;;) { + if (page_rec_is_infimum(rec)) { + + break; + } + + if (page_no != ibuf_rec_get_page_no(rec) + || space != ibuf_rec_get_space(rec)) { + + goto count_later; + } + + volume += ibuf_rec_get_volume(rec); + + rec = page_rec_get_prev(rec); + } + + /* Look at the previous page */ + + prev_page_no = btr_page_get_prev(page, mtr); + + if (prev_page_no == FIL_NULL) { + + goto count_later; + } + + { + buf_block_t* block; + + block = buf_page_get( + IBUF_SPACE_ID, 0, prev_page_no, RW_X_LATCH, mtr); + + buf_block_dbg_add_level(block, SYNC_TREE_NODE); + + + prev_page = buf_block_get_frame(block); + } + +#ifdef UNIV_BTR_DEBUG + ut_a(btr_page_get_next(prev_page, mtr) + == page_get_page_no(page)); +#endif /* UNIV_BTR_DEBUG */ + + rec = page_get_supremum_rec(prev_page); + rec = page_rec_get_prev(rec); + + for (;;) { + if (page_rec_is_infimum(rec)) { + + /* We cannot go to yet a previous page, because we + do not have the x-latch on it, and cannot acquire one + because of the latching order: we have to give up */ + + return(UNIV_PAGE_SIZE); + } + + if (page_no != ibuf_rec_get_page_no(rec) + || space != ibuf_rec_get_space(rec)) { + + goto count_later; + } + + volume += ibuf_rec_get_volume(rec); + + rec = page_rec_get_prev(rec); + } + +count_later: + rec = btr_pcur_get_rec(pcur); + + if (!page_rec_is_supremum(rec)) { + rec = page_rec_get_next(rec); + } + + for (;;) { + if (page_rec_is_supremum(rec)) { + + break; + } + + if (page_no != ibuf_rec_get_page_no(rec) + || space != ibuf_rec_get_space(rec)) { + + return(volume); + } + + volume += ibuf_rec_get_volume(rec); + + rec = page_rec_get_next(rec); + } + + /* Look at the next page */ + + next_page_no = btr_page_get_next(page, mtr); + + if (next_page_no == FIL_NULL) { + + return(volume); + } + + { + buf_block_t* block; + + block = buf_page_get( + IBUF_SPACE_ID, 0, next_page_no, RW_X_LATCH, mtr); + + buf_block_dbg_add_level(block, SYNC_TREE_NODE); + + + next_page = buf_block_get_frame(block); + } + +#ifdef UNIV_BTR_DEBUG + ut_a(btr_page_get_prev(next_page, mtr) == page_get_page_no(page)); +#endif /* UNIV_BTR_DEBUG */ + + rec = page_get_infimum_rec(next_page); + rec = page_rec_get_next(rec); + + for (;;) { + if (page_rec_is_supremum(rec)) { + + /* We give up */ + + return(UNIV_PAGE_SIZE); + } + + if (page_no != ibuf_rec_get_page_no(rec) + || space != ibuf_rec_get_space(rec)) { + + return(volume); + } + + volume += ibuf_rec_get_volume(rec); + + rec = page_rec_get_next(rec); + } +} + +/************************************************************************* +Reads the biggest tablespace id from the high end of the insert buffer +tree and updates the counter in fil_system. */ +UNIV_INTERN +void +ibuf_update_max_tablespace_id(void) +/*===============================*/ +{ + ulint max_space_id; + const rec_t* rec; + const byte* field; + ulint len; + btr_pcur_t pcur; + mtr_t mtr; + + ut_a(!dict_table_is_comp(ibuf->index->table)); + + ibuf_enter(); + + mtr_start(&mtr); + + btr_pcur_open_at_index_side( + FALSE, ibuf->index, BTR_SEARCH_LEAF, &pcur, TRUE, &mtr); + + btr_pcur_move_to_prev(&pcur, &mtr); + + if (btr_pcur_is_before_first_on_page(&pcur)) { + /* The tree is empty */ + + max_space_id = 0; + } else { + rec = btr_pcur_get_rec(&pcur); + + field = rec_get_nth_field_old(rec, 0, &len); + + ut_a(len == 4); + + max_space_id = mach_read_from_4(field); + } + + mtr_commit(&mtr); + ibuf_exit(); + + /* printf("Maximum space id in insert buffer %lu\n", max_space_id); */ + + fil_set_max_space_id_if_bigger(max_space_id); +} + +/************************************************************************* +Makes an index insert to the insert buffer, instead of directly to the disk +page, if this is possible. */ +static +ulint +ibuf_insert_low( +/*============*/ + /* out: DB_SUCCESS, DB_FAIL, DB_STRONG_FAIL */ + ulint mode, /* in: BTR_MODIFY_PREV or BTR_MODIFY_TREE */ + const dtuple_t* entry, /* in: index entry to insert */ + ulint entry_size, + /* in: rec_get_converted_size(index, entry) */ + dict_index_t* index, /* in: index where to insert; must not be + unique or clustered */ + ulint space, /* in: space id where to insert */ + ulint zip_size,/* in: compressed page size in bytes, or 0 */ + ulint page_no,/* in: page number where to insert */ + que_thr_t* thr) /* in: query thread */ +{ + big_rec_t* dummy_big_rec; + btr_pcur_t pcur; + btr_cur_t* cursor; + dtuple_t* ibuf_entry; + mem_heap_t* heap; + ulint buffered; + rec_t* ins_rec; + ibool old_bit_value; + page_t* bitmap_page; + page_t* root; + ulint err; + ibool do_merge; + ulint space_ids[IBUF_MAX_N_PAGES_MERGED]; + ib_int64_t space_versions[IBUF_MAX_N_PAGES_MERGED]; + ulint page_nos[IBUF_MAX_N_PAGES_MERGED]; + ulint n_stored; + ulint bits; + mtr_t mtr; + mtr_t bitmap_mtr; + + ut_a(!dict_index_is_clust(index)); + ut_ad(dtuple_check_typed(entry)); + ut_ad(ut_is_2pow(zip_size)); + + ut_a(trx_sys_multiple_tablespace_format); + + do_merge = FALSE; + + mutex_enter(&ibuf_mutex); + + if (ibuf->size >= ibuf->max_size + IBUF_CONTRACT_DO_NOT_INSERT) { + /* Insert buffer is now too big, contract it but do not try + to insert */ + + mutex_exit(&ibuf_mutex); + +#ifdef UNIV_IBUF_DEBUG + fputs("Ibuf too big\n", stderr); +#endif + /* Use synchronous contract (== TRUE) */ + ibuf_contract(TRUE); + + return(DB_STRONG_FAIL); + } + + mutex_exit(&ibuf_mutex); + + if (mode == BTR_MODIFY_TREE) { + mutex_enter(&ibuf_pessimistic_insert_mutex); + + ibuf_enter(); + + mutex_enter(&ibuf_mutex); + + while (!ibuf_data_enough_free_for_insert()) { + + mutex_exit(&ibuf_mutex); + + ibuf_exit(); + + mutex_exit(&ibuf_pessimistic_insert_mutex); + + err = ibuf_add_free_page(); + + if (err == DB_STRONG_FAIL) { + + return(err); + } + + mutex_enter(&ibuf_pessimistic_insert_mutex); + + ibuf_enter(); + + mutex_enter(&ibuf_mutex); + } + } else { + ibuf_enter(); + } + + heap = mem_heap_create(512); + + /* Build the entry which contains the space id and the page number as + the first fields and the type information for other fields, and which + will be inserted to the insert buffer. */ + + ibuf_entry = ibuf_entry_build(index, entry, space, page_no, heap); + + /* Open a cursor to the insert buffer tree to calculate if we can add + the new entry to it without exceeding the free space limit for the + page. */ + + mtr_start(&mtr); + + btr_pcur_open(ibuf->index, ibuf_entry, PAGE_CUR_LE, mode, &pcur, &mtr); + + /* Find out the volume of already buffered inserts for the same index + page */ + buffered = ibuf_get_volume_buffered(&pcur, space, page_no, &mtr); + +#ifdef UNIV_IBUF_COUNT_DEBUG + ut_a((buffered == 0) || ibuf_count_get(space, page_no)); +#endif + mtr_start(&bitmap_mtr); + + bitmap_page = ibuf_bitmap_get_map_page(space, page_no, + zip_size, &bitmap_mtr); + + /* We check if the index page is suitable for buffered entries */ + + if (buf_page_peek(space, page_no) + || lock_rec_expl_exist_on_page(space, page_no)) { + err = DB_STRONG_FAIL; + + mtr_commit(&bitmap_mtr); + + goto function_exit; + } + + bits = ibuf_bitmap_page_get_bits(bitmap_page, page_no, zip_size, + IBUF_BITMAP_FREE, &bitmap_mtr); + + if (buffered + entry_size + page_dir_calc_reserved_space(1) + > ibuf_index_page_calc_free_from_bits(zip_size, bits)) { + mtr_commit(&bitmap_mtr); + + /* It may not fit */ + err = DB_STRONG_FAIL; + + do_merge = TRUE; + + ibuf_get_merge_page_nos(FALSE, btr_pcur_get_rec(&pcur), + space_ids, space_versions, + page_nos, &n_stored); + goto function_exit; + } + + /* Set the bitmap bit denoting that the insert buffer contains + buffered entries for this index page, if the bit is not set yet */ + + old_bit_value = ibuf_bitmap_page_get_bits( + bitmap_page, page_no, zip_size, + IBUF_BITMAP_BUFFERED, &bitmap_mtr); + + if (!old_bit_value) { + ibuf_bitmap_page_set_bits(bitmap_page, page_no, zip_size, + IBUF_BITMAP_BUFFERED, TRUE, + &bitmap_mtr); + } + + mtr_commit(&bitmap_mtr); + + cursor = btr_pcur_get_btr_cur(&pcur); + + if (mode == BTR_MODIFY_PREV) { + err = btr_cur_optimistic_insert(BTR_NO_LOCKING_FLAG, cursor, + ibuf_entry, &ins_rec, + &dummy_big_rec, 0, thr, &mtr); + if (err == DB_SUCCESS) { + /* Update the page max trx id field */ + page_update_max_trx_id(btr_cur_get_block(cursor), NULL, + thr_get_trx(thr)->id); + } + } else { + ut_ad(mode == BTR_MODIFY_TREE); + + /* We acquire an x-latch to the root page before the insert, + because a pessimistic insert releases the tree x-latch, + which would cause the x-latching of the root after that to + break the latching order. */ + + root = ibuf_tree_root_get(&mtr); + + err = btr_cur_pessimistic_insert(BTR_NO_LOCKING_FLAG + | BTR_NO_UNDO_LOG_FLAG, + cursor, + ibuf_entry, &ins_rec, + &dummy_big_rec, 0, thr, &mtr); + if (err == DB_SUCCESS) { + /* Update the page max trx id field */ + page_update_max_trx_id(btr_cur_get_block(cursor), NULL, + thr_get_trx(thr)->id); + } + + ibuf_size_update(root, &mtr); + } + +function_exit: +#ifdef UNIV_IBUF_COUNT_DEBUG + if (err == DB_SUCCESS) { + fprintf(stderr, + "Incrementing ibuf count of space %lu page %lu\n" + "from %lu by 1\n", space, page_no, + ibuf_count_get(space, page_no)); + + ibuf_count_set(space, page_no, + ibuf_count_get(space, page_no) + 1); + } +#endif + if (mode == BTR_MODIFY_TREE) { + + mutex_exit(&ibuf_mutex); + mutex_exit(&ibuf_pessimistic_insert_mutex); + } + + mtr_commit(&mtr); + btr_pcur_close(&pcur); + ibuf_exit(); + + mem_heap_free(heap); + + if (err == DB_SUCCESS) { + mutex_enter(&ibuf_mutex); + + ibuf->empty = FALSE; + ibuf->n_inserts++; + + mutex_exit(&ibuf_mutex); + + if (mode == BTR_MODIFY_TREE) { + ibuf_contract_after_insert(entry_size); + } + } + + if (do_merge) { +#ifdef UNIV_IBUF_DEBUG + ut_a(n_stored <= IBUF_MAX_N_PAGES_MERGED); +#endif + buf_read_ibuf_merge_pages(FALSE, space_ids, space_versions, + page_nos, n_stored); + } + + return(err); +} + +/************************************************************************* +Makes an index insert to the insert buffer, instead of directly to the disk +page, if this is possible. Does not do insert if the index is clustered +or unique. */ +UNIV_INTERN +ibool +ibuf_insert( +/*========*/ + /* out: TRUE if success */ + const dtuple_t* entry, /* in: index entry to insert */ + dict_index_t* index, /* in: index where to insert */ + ulint space, /* in: space id where to insert */ + ulint zip_size,/* in: compressed page size in bytes, or 0 */ + ulint page_no,/* in: page number where to insert */ + que_thr_t* thr) /* in: query thread */ +{ + ulint err; + ulint entry_size; + + ut_a(trx_sys_multiple_tablespace_format); + ut_ad(dtuple_check_typed(entry)); + ut_ad(ut_is_2pow(zip_size)); + + ut_a(!dict_index_is_clust(index)); + + switch (UNIV_EXPECT(ibuf_use, IBUF_USE_INSERT)) { + case IBUF_USE_NONE: + return(FALSE); + case IBUF_USE_INSERT: + goto do_insert; + case IBUF_USE_COUNT: + break; + } + + ut_error; /* unknown value of ibuf_use */ + +do_insert: + entry_size = rec_get_converted_size(index, entry, 0); + + if (entry_size + >= (page_get_free_space_of_empty(dict_table_is_comp(index->table)) + / 2)) { + return(FALSE); + } + + err = ibuf_insert_low(BTR_MODIFY_PREV, entry, entry_size, + index, space, zip_size, page_no, thr); + if (err == DB_FAIL) { + err = ibuf_insert_low(BTR_MODIFY_TREE, entry, entry_size, + index, space, zip_size, page_no, thr); + } + + if (err == DB_SUCCESS) { +#ifdef UNIV_IBUF_DEBUG + /* fprintf(stderr, "Ibuf insert for page no %lu of index %s\n", + page_no, index->name); */ +#endif + return(TRUE); + + } else { + ut_a(err == DB_STRONG_FAIL); + + return(FALSE); + } +} + +/************************************************************************ +During merge, inserts to an index page a secondary index entry extracted +from the insert buffer. */ +static +void +ibuf_insert_to_index_page( +/*======================*/ + dtuple_t* entry, /* in: buffered entry to insert */ + buf_block_t* block, /* in/out: index page where the buffered entry + should be placed */ + dict_index_t* index, /* in: record descriptor */ + mtr_t* mtr) /* in: mtr */ +{ + page_cur_t page_cur; + ulint low_match; + page_t* page = buf_block_get_frame(block); + rec_t* rec; + page_t* bitmap_page; + ulint old_bits; + + ut_ad(ibuf_inside()); + ut_ad(dtuple_check_typed(entry)); + + if (UNIV_UNLIKELY(dict_table_is_comp(index->table) + != (ibool)!!page_is_comp(page))) { + fputs("InnoDB: Trying to insert a record from" + " the insert buffer to an index page\n" + "InnoDB: but the 'compact' flag does not match!\n", + stderr); + goto dump; + } + + rec = page_rec_get_next(page_get_infimum_rec(page)); + + if (UNIV_UNLIKELY(rec_get_n_fields(rec, index) + != dtuple_get_n_fields(entry))) { + fputs("InnoDB: Trying to insert a record from" + " the insert buffer to an index page\n" + "InnoDB: but the number of fields does not match!\n", + stderr); +dump: + buf_page_print(page, 0); + + dtuple_print(stderr, entry); + + fputs("InnoDB: The table where where" + " this index record belongs\n" + "InnoDB: is now probably corrupt." + " Please run CHECK TABLE on\n" + "InnoDB: your tables.\n" + "InnoDB: Submit a detailed bug report to" + " http://bugs.mysql.com!\n", stderr); + + return; + } + + low_match = page_cur_search(block, index, entry, + PAGE_CUR_LE, &page_cur); + + if (low_match == dtuple_get_n_fields(entry)) { + page_zip_des_t* page_zip; + + rec = page_cur_get_rec(&page_cur); + page_zip = buf_block_get_page_zip(block); + + btr_cur_del_unmark_for_ibuf(rec, page_zip, mtr); + } else { + rec = page_cur_tuple_insert(&page_cur, entry, index, 0, mtr); + + if (UNIV_LIKELY(rec != NULL)) { + return; + } + + /* If the record did not fit, reorganize */ + + btr_page_reorganize(block, index, mtr); + page_cur_search(block, index, entry, PAGE_CUR_LE, &page_cur); + + /* This time the record must fit */ + if (UNIV_UNLIKELY + (!page_cur_tuple_insert(&page_cur, entry, index, + 0, mtr))) { + ulint space; + ulint page_no; + ulint zip_size; + + ut_print_timestamp(stderr); + + fprintf(stderr, + " InnoDB: Error: Insert buffer insert" + " fails; page free %lu," + " dtuple size %lu\n", + (ulong) page_get_max_insert_size( + page, 1), + (ulong) rec_get_converted_size( + index, entry, 0)); + fputs("InnoDB: Cannot insert index record ", + stderr); + dtuple_print(stderr, entry); + fputs("\nInnoDB: The table where" + " this index record belongs\n" + "InnoDB: is now probably corrupt." + " Please run CHECK TABLE on\n" + "InnoDB: that table.\n", stderr); + + space = page_get_space_id(page); + zip_size = buf_block_get_zip_size(block); + page_no = page_get_page_no(page); + + bitmap_page = ibuf_bitmap_get_map_page( + space, page_no, zip_size, mtr); + old_bits = ibuf_bitmap_page_get_bits( + bitmap_page, page_no, zip_size, + IBUF_BITMAP_FREE, mtr); + + fprintf(stderr, + "InnoDB: space %lu, page %lu," + " zip_size %lu, bitmap bits %lu\n", + (ulong) space, (ulong) page_no, + (ulong) zip_size, (ulong) old_bits); + + fputs("InnoDB: Submit a detailed bug report" + " to http://bugs.mysql.com\n", stderr); + } + } +} + +/************************************************************************* +Deletes from ibuf the record on which pcur is positioned. If we have to +resort to a pessimistic delete, this function commits mtr and closes +the cursor. */ +static +ibool +ibuf_delete_rec( +/*============*/ + /* out: TRUE if mtr was committed and pcur + closed in this operation */ + ulint space, /* in: space id */ + ulint page_no,/* in: index page number where the record + should belong */ + btr_pcur_t* pcur, /* in: pcur positioned on the record to + delete, having latch mode BTR_MODIFY_LEAF */ + const dtuple_t* search_tuple, + /* in: search tuple for entries of page_no */ + mtr_t* mtr) /* in: mtr */ +{ + ibool success; + page_t* root; + ulint err; + + ut_ad(ibuf_inside()); + ut_ad(page_rec_is_user_rec(btr_pcur_get_rec(pcur))); + ut_ad(ibuf_rec_get_page_no(btr_pcur_get_rec(pcur)) == page_no); + ut_ad(ibuf_rec_get_space(btr_pcur_get_rec(pcur)) == space); + + success = btr_cur_optimistic_delete(btr_pcur_get_btr_cur(pcur), mtr); + + if (success) { +#ifdef UNIV_IBUF_COUNT_DEBUG + fprintf(stderr, + "Decrementing ibuf count of space %lu page %lu\n" + "from %lu by 1\n", space, page_no, + ibuf_count_get(space, page_no)); + ibuf_count_set(space, page_no, + ibuf_count_get(space, page_no) - 1); +#endif + return(FALSE); + } + + ut_ad(page_rec_is_user_rec(btr_pcur_get_rec(pcur))); + ut_ad(ibuf_rec_get_page_no(btr_pcur_get_rec(pcur)) == page_no); + ut_ad(ibuf_rec_get_space(btr_pcur_get_rec(pcur)) == space); + + /* We have to resort to a pessimistic delete from ibuf */ + btr_pcur_store_position(pcur, mtr); + + btr_pcur_commit_specify_mtr(pcur, mtr); + + mutex_enter(&ibuf_mutex); + + mtr_start(mtr); + + success = btr_pcur_restore_position(BTR_MODIFY_TREE, pcur, mtr); + + if (!success) { + if (fil_space_get_flags(space) == ULINT_UNDEFINED) { + /* The tablespace has been dropped. It is possible + that another thread has deleted the insert buffer + entry. Do not complain. */ + goto commit_and_exit; + } + + fprintf(stderr, + "InnoDB: ERROR: Submit the output to" + " http://bugs.mysql.com\n" + "InnoDB: ibuf cursor restoration fails!\n" + "InnoDB: ibuf record inserted to page %lu\n", + (ulong) page_no); + fflush(stderr); + + rec_print_old(stderr, btr_pcur_get_rec(pcur)); + rec_print_old(stderr, pcur->old_rec); + dtuple_print(stderr, search_tuple); + + rec_print_old(stderr, + page_rec_get_next(btr_pcur_get_rec(pcur))); + fflush(stderr); + + btr_pcur_commit_specify_mtr(pcur, mtr); + + fputs("InnoDB: Validating insert buffer tree:\n", stderr); + if (!btr_validate_index(ibuf->index, NULL)) { + ut_error; + } + + fprintf(stderr, "InnoDB: ibuf tree ok\n"); + fflush(stderr); + + goto func_exit; + } + + root = ibuf_tree_root_get(mtr); + + btr_cur_pessimistic_delete(&err, TRUE, btr_pcur_get_btr_cur(pcur), + RB_NONE, mtr); + ut_a(err == DB_SUCCESS); + +#ifdef UNIV_IBUF_COUNT_DEBUG + ibuf_count_set(space, page_no, ibuf_count_get(space, page_no) - 1); +#endif + ibuf_size_update(root, mtr); + +commit_and_exit: + btr_pcur_commit_specify_mtr(pcur, mtr); + +func_exit: + btr_pcur_close(pcur); + + mutex_exit(&ibuf_mutex); + + return(TRUE); +} + +/************************************************************************* +When an index page is read from a disk to the buffer pool, this function +inserts to the page the possible index entries buffered in the insert buffer. +The entries are deleted from the insert buffer. If the page is not read, but +created in the buffer pool, this function deletes its buffered entries from +the insert buffer; there can exist entries for such a page if the page +belonged to an index which subsequently was dropped. */ +UNIV_INTERN +void +ibuf_merge_or_delete_for_page( +/*==========================*/ + buf_block_t* block, /* in: if page has been read from + disk, pointer to the page x-latched, + else NULL */ + ulint space, /* in: space id of the index page */ + ulint page_no,/* in: page number of the index page */ + ulint zip_size,/* in: compressed page size in bytes, + or 0 */ + ibool update_ibuf_bitmap)/* in: normally this is set + to TRUE, but if we have deleted or are + deleting the tablespace, then we + naturally do not want to update a + non-existent bitmap page */ +{ + mem_heap_t* heap; + btr_pcur_t pcur; + dtuple_t* search_tuple; + ulint n_inserts; +#ifdef UNIV_IBUF_DEBUG + ulint volume; +#endif + page_zip_des_t* page_zip = NULL; + ibool tablespace_being_deleted = FALSE; + ibool corruption_noticed = FALSE; + mtr_t mtr; + + ut_ad(!block || buf_block_get_space(block) == space); + ut_ad(!block || buf_block_get_page_no(block) == page_no); + ut_ad(!block || buf_block_get_zip_size(block) == zip_size); + + if (srv_force_recovery >= SRV_FORCE_NO_IBUF_MERGE + || trx_sys_hdr_page(space, page_no)) { + return; + } + + /* We cannot refer to zip_size in the following, because + zip_size is passed as ULINT_UNDEFINED (it is unknown) when + buf_read_ibuf_merge_pages() is merging (discarding) changes + for a dropped tablespace. When block != NULL or + update_ibuf_bitmap is specified, the zip_size must be known. + That is why we will repeat the check below, with zip_size in + place of 0. Passing zip_size as 0 assumes that the + uncompressed page size always is a power-of-2 multiple of the + compressed page size. */ + + if (ibuf_fixed_addr_page(space, 0, page_no) + || fsp_descr_page(0, page_no)) { + return; + } + + if (UNIV_LIKELY(update_ibuf_bitmap)) { + ut_a(ut_is_2pow(zip_size)); + + if (ibuf_fixed_addr_page(space, zip_size, page_no) + || fsp_descr_page(zip_size, page_no)) { + return; + } + + /* If the following returns FALSE, we get the counter + incremented, and must decrement it when we leave this + function. When the counter is > 0, that prevents tablespace + from being dropped. */ + + tablespace_being_deleted = fil_inc_pending_ibuf_merges(space); + + if (UNIV_UNLIKELY(tablespace_being_deleted)) { + /* Do not try to read the bitmap page from space; + just delete the ibuf records for the page */ + + block = NULL; + update_ibuf_bitmap = FALSE; + } else { + page_t* bitmap_page; + + mtr_start(&mtr); + + bitmap_page = ibuf_bitmap_get_map_page( + space, page_no, zip_size, &mtr); + + if (!ibuf_bitmap_page_get_bits(bitmap_page, page_no, + zip_size, + IBUF_BITMAP_BUFFERED, + &mtr)) { + /* No inserts buffered for this page */ + mtr_commit(&mtr); + + if (!tablespace_being_deleted) { + fil_decr_pending_ibuf_merges(space); + } + + return; + } + mtr_commit(&mtr); + } + } else if (block + && (ibuf_fixed_addr_page(space, zip_size, page_no) + || fsp_descr_page(zip_size, page_no))) { + + return; + } + + ibuf_enter(); + + heap = mem_heap_create(512); + + if (!trx_sys_multiple_tablespace_format) { + ut_a(trx_doublewrite_must_reset_space_ids); + search_tuple = ibuf_search_tuple_build(space, page_no, heap); + } else { + search_tuple = ibuf_new_search_tuple_build(space, page_no, + heap); + } + + if (block) { + /* Move the ownership of the x-latch on the page to this OS + thread, so that we can acquire a second x-latch on it. This + is needed for the insert operations to the index page to pass + the debug checks. */ + + rw_lock_x_lock_move_ownership(&(block->lock)); + page_zip = buf_block_get_page_zip(block); + + if (UNIV_UNLIKELY(fil_page_get_type(block->frame) + != FIL_PAGE_INDEX) + || UNIV_UNLIKELY(!page_is_leaf(block->frame))) { + + page_t* bitmap_page; + + corruption_noticed = TRUE; + + ut_print_timestamp(stderr); + + mtr_start(&mtr); + + fputs(" InnoDB: Dump of the ibuf bitmap page:\n", + stderr); + + bitmap_page = ibuf_bitmap_get_map_page(space, page_no, + zip_size, &mtr); + buf_page_print(bitmap_page, 0); + + mtr_commit(&mtr); + + fputs("\nInnoDB: Dump of the page:\n", stderr); + + buf_page_print(block->frame, 0); + + fprintf(stderr, + "InnoDB: Error: corruption in the tablespace." + " Bitmap shows insert\n" + "InnoDB: buffer records to page n:o %lu" + " though the page\n" + "InnoDB: type is %lu, which is" + " not an index leaf page!\n" + "InnoDB: We try to resolve the problem" + " by skipping the insert buffer\n" + "InnoDB: merge for this page." + " Please run CHECK TABLE on your tables\n" + "InnoDB: to determine if they are corrupt" + " after this.\n\n" + "InnoDB: Please submit a detailed bug report" + " to http://bugs.mysql.com\n\n", + (ulong) page_no, + (ulong) + fil_page_get_type(block->frame)); + } + } + + n_inserts = 0; +#ifdef UNIV_IBUF_DEBUG + volume = 0; +#endif +loop: + mtr_start(&mtr); + + if (block) { + ibool success; + + success = buf_page_get_known_nowait( + RW_X_LATCH, block, + BUF_KEEP_OLD, __FILE__, __LINE__, &mtr); + + ut_a(success); + + buf_block_dbg_add_level(block, SYNC_TREE_NODE); + } + + /* Position pcur in the insert buffer at the first entry for this + index page */ + btr_pcur_open_on_user_rec( + ibuf->index, search_tuple, PAGE_CUR_GE, BTR_MODIFY_LEAF, + &pcur, &mtr); + + if (!btr_pcur_is_on_user_rec(&pcur)) { + ut_ad(btr_pcur_is_after_last_in_tree(&pcur, &mtr)); + + goto reset_bit; + } + + for (;;) { + rec_t* rec; + + ut_ad(btr_pcur_is_on_user_rec(&pcur)); + + rec = btr_pcur_get_rec(&pcur); + + /* Check if the entry is for this index page */ + if (ibuf_rec_get_page_no(rec) != page_no + || ibuf_rec_get_space(rec) != space) { + + if (block) { + page_header_reset_last_insert( + block->frame, page_zip, &mtr); + } + + goto reset_bit; + } + + if (UNIV_UNLIKELY(corruption_noticed)) { + fputs("InnoDB: Discarding record\n ", stderr); + rec_print_old(stderr, rec); + fputs("\nInnoDB: from the insert buffer!\n\n", stderr); + } else if (block) { + /* Now we have at pcur a record which should be + inserted to the index page; NOTE that the call below + copies pointers to fields in rec, and we must + keep the latch to the rec page until the + insertion is finished! */ + dtuple_t* entry; + dulint max_trx_id; + dict_index_t* dummy_index; + + max_trx_id = page_get_max_trx_id(page_align(rec)); + page_update_max_trx_id(block, page_zip, max_trx_id); + + entry = ibuf_build_entry_from_ibuf_rec( + rec, heap, &dummy_index); +#ifdef UNIV_IBUF_DEBUG + volume += rec_get_converted_size(dummy_index, entry, 0) + + page_dir_calc_reserved_space(1); + ut_a(volume <= 4 * UNIV_PAGE_SIZE + / IBUF_PAGE_SIZE_PER_FREE_SPACE); +#endif + ibuf_insert_to_index_page(entry, block, + dummy_index, &mtr); + ibuf_dummy_index_free(dummy_index); + } + + n_inserts++; + + /* Delete the record from ibuf */ + if (ibuf_delete_rec(space, page_no, &pcur, search_tuple, + &mtr)) { + /* Deletion was pessimistic and mtr was committed: + we start from the beginning again */ + + goto loop; + } else if (btr_pcur_is_after_last_on_page(&pcur)) { + mtr_commit(&mtr); + btr_pcur_close(&pcur); + + goto loop; + } + } + +reset_bit: +#ifdef UNIV_IBUF_COUNT_DEBUG + if (ibuf_count_get(space, page_no) > 0) { + /* btr_print_tree(ibuf_data->index->tree, 100); + ibuf_print(); */ + } +#endif + if (UNIV_LIKELY(update_ibuf_bitmap)) { + page_t* bitmap_page; + + bitmap_page = ibuf_bitmap_get_map_page( + space, page_no, zip_size, &mtr); + + ibuf_bitmap_page_set_bits( + bitmap_page, page_no, zip_size, + IBUF_BITMAP_BUFFERED, FALSE, &mtr); + + if (block) { + ulint old_bits = ibuf_bitmap_page_get_bits( + bitmap_page, page_no, zip_size, + IBUF_BITMAP_FREE, &mtr); + + ulint new_bits = ibuf_index_page_calc_free( + zip_size, block); + + if (old_bits != new_bits) { + ibuf_bitmap_page_set_bits( + bitmap_page, page_no, zip_size, + IBUF_BITMAP_FREE, new_bits, &mtr); + } + } + } + + mtr_commit(&mtr); + btr_pcur_close(&pcur); + mem_heap_free(heap); + + /* Protect our statistics keeping from race conditions */ + mutex_enter(&ibuf_mutex); + + ibuf->n_merges++; + ibuf->n_merged_recs += n_inserts; + + mutex_exit(&ibuf_mutex); + + if (update_ibuf_bitmap && !tablespace_being_deleted) { + + fil_decr_pending_ibuf_merges(space); + } + + ibuf_exit(); + +#ifdef UNIV_IBUF_COUNT_DEBUG + ut_a(ibuf_count_get(space, page_no) == 0); +#endif +} + +/************************************************************************* +Deletes all entries in the insert buffer for a given space id. This is used +in DISCARD TABLESPACE and IMPORT TABLESPACE. +NOTE: this does not update the page free bitmaps in the space. The space will +become CORRUPT when you call this function! */ +UNIV_INTERN +void +ibuf_delete_for_discarded_space( +/*============================*/ + ulint space) /* in: space id */ +{ + mem_heap_t* heap; + btr_pcur_t pcur; + dtuple_t* search_tuple; + rec_t* ibuf_rec; + ulint page_no; + ibool closed; + ulint n_inserts; + mtr_t mtr; + + heap = mem_heap_create(512); + + /* Use page number 0 to build the search tuple so that we get the + cursor positioned at the first entry for this space id */ + + search_tuple = ibuf_new_search_tuple_build(space, 0, heap); + + n_inserts = 0; +loop: + ibuf_enter(); + + mtr_start(&mtr); + + /* Position pcur in the insert buffer at the first entry for the + space */ + btr_pcur_open_on_user_rec( + ibuf->index, search_tuple, PAGE_CUR_GE, BTR_MODIFY_LEAF, + &pcur, &mtr); + + if (!btr_pcur_is_on_user_rec(&pcur)) { + ut_ad(btr_pcur_is_after_last_in_tree(&pcur, &mtr)); + + goto leave_loop; + } + + for (;;) { + ut_ad(btr_pcur_is_on_user_rec(&pcur)); + + ibuf_rec = btr_pcur_get_rec(&pcur); + + /* Check if the entry is for this space */ + if (ibuf_rec_get_space(ibuf_rec) != space) { + + goto leave_loop; + } + + page_no = ibuf_rec_get_page_no(ibuf_rec); + + n_inserts++; + + /* Delete the record from ibuf */ + closed = ibuf_delete_rec(space, page_no, &pcur, search_tuple, + &mtr); + if (closed) { + /* Deletion was pessimistic and mtr was committed: + we start from the beginning again */ + + ibuf_exit(); + + goto loop; + } + + if (btr_pcur_is_after_last_on_page(&pcur)) { + mtr_commit(&mtr); + btr_pcur_close(&pcur); + + ibuf_exit(); + + goto loop; + } + } + +leave_loop: + mtr_commit(&mtr); + btr_pcur_close(&pcur); + + /* Protect our statistics keeping from race conditions */ + mutex_enter(&ibuf_mutex); + + ibuf->n_merges++; + ibuf->n_merged_recs += n_inserts; + + mutex_exit(&ibuf_mutex); + + ibuf_exit(); + + mem_heap_free(heap); +} + +/********************************************************************** +Looks if the insert buffer is empty. */ +UNIV_INTERN +ibool +ibuf_is_empty(void) +/*===============*/ + /* out: TRUE if empty */ +{ + ibool is_empty; + const page_t* root; + mtr_t mtr; + + ibuf_enter(); + + mutex_enter(&ibuf_mutex); + + mtr_start(&mtr); + + root = ibuf_tree_root_get(&mtr); + + if (page_get_n_recs(root) == 0) { + + is_empty = TRUE; + + if (ibuf->empty == FALSE) { + fprintf(stderr, + "InnoDB: Warning: insert buffer tree is empty" + " but the data struct does not\n" + "InnoDB: know it. This condition is legal" + " if the master thread has not yet\n" + "InnoDB: run to completion.\n"); + } + } else { + ut_a(ibuf->empty == FALSE); + + is_empty = FALSE; + } + + mtr_commit(&mtr); + + mutex_exit(&ibuf_mutex); + + ibuf_exit(); + + return(is_empty); +} + +/********************************************************************** +Prints info of ibuf. */ +UNIV_INTERN +void +ibuf_print( +/*=======*/ + FILE* file) /* in: file where to print */ +{ +#ifdef UNIV_IBUF_COUNT_DEBUG + ulint i; + ulint j; +#endif + + mutex_enter(&ibuf_mutex); + + fprintf(file, + "Ibuf: size %lu, free list len %lu, seg size %lu,\n" + "%lu inserts, %lu merged recs, %lu merges\n", + (ulong) ibuf->size, + (ulong) ibuf->free_list_len, + (ulong) ibuf->seg_size, + (ulong) ibuf->n_inserts, + (ulong) ibuf->n_merged_recs, + (ulong) ibuf->n_merges); +#ifdef UNIV_IBUF_COUNT_DEBUG + for (i = 0; i < IBUF_COUNT_N_SPACES; i++) { + for (j = 0; j < IBUF_COUNT_N_PAGES; j++) { + ulint count = ibuf_count_get(i, j); + + if (count > 0) { + fprintf(stderr, + "Ibuf count for space/page %lu/%lu" + " is %lu\n", + (ulong) i, (ulong) j, (ulong) count); + } + } + } +#endif /* UNIV_IBUF_COUNT_DEBUG */ + + mutex_exit(&ibuf_mutex); +} === added directory 'storage/xtradb/include' === added file 'storage/xtradb/include/btr0btr.h' --- a/storage/xtradb/include/btr0btr.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/btr0btr.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,494 @@ +/***************************************************************************** + +Copyright (c) 1994, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +The B-tree + +Created 6/2/1994 Heikki Tuuri +*******************************************************/ + +#ifndef btr0btr_h +#define btr0btr_h + +#include "univ.i" + +#include "dict0dict.h" +#include "data0data.h" +#include "page0cur.h" +#include "mtr0mtr.h" +#include "btr0types.h" + +/* Maximum record size which can be stored on a page, without using the +special big record storage structure */ + +#define BTR_PAGE_MAX_REC_SIZE (UNIV_PAGE_SIZE / 2 - 200) + +/* Maximum depth of a B-tree in InnoDB. Note that this isn't a maximum as +such; none of the tree operations avoid producing trees bigger than this. It +is instead a "max depth that other code must work with", useful for e.g. +fixed-size arrays that must store some information about each level in a +tree. In other words: if a B-tree with bigger depth than this is +encountered, it is not acceptable for it to lead to mysterious memory +corruption, but it is acceptable for the program to die with a clear assert +failure. */ +#define BTR_MAX_LEVELS 100 + +/* Latching modes for btr_cur_search_to_nth_level(). */ +#define BTR_SEARCH_LEAF RW_S_LATCH +#define BTR_MODIFY_LEAF RW_X_LATCH +#define BTR_NO_LATCHES RW_NO_LATCH +#define BTR_MODIFY_TREE 33 +#define BTR_CONT_MODIFY_TREE 34 +#define BTR_SEARCH_PREV 35 +#define BTR_MODIFY_PREV 36 + +/* If this is ORed to the latch mode, it means that the search tuple will be +inserted to the index, at the searched position */ +#define BTR_INSERT 512 + +/* This flag ORed to latch mode says that we do the search in query +optimization */ +#define BTR_ESTIMATE 1024 + +/* This flag ORed to latch mode says that we can ignore possible +UNIQUE definition on secondary indexes when we decide if we can use the +insert buffer to speed up inserts */ +#define BTR_IGNORE_SEC_UNIQUE 2048 + +/****************************************************************** +Gets the root node of a tree and x-latches it. */ +UNIV_INTERN +page_t* +btr_root_get( +/*=========*/ + /* out: root page, x-latched */ + dict_index_t* index, /* in: index tree */ + mtr_t* mtr); /* in: mtr */ +/****************************************************************** +Gets a buffer page and declares its latching order level. */ +UNIV_INLINE +buf_block_t* +btr_block_get( +/*==========*/ + ulint space, /* in: space id */ + ulint zip_size, /* in: compressed page size in bytes + or 0 for uncompressed pages */ + ulint page_no, /* in: page number */ + ulint mode, /* in: latch mode */ + mtr_t* mtr); /* in: mtr */ +/****************************************************************** +Gets a buffer page and declares its latching order level. */ +UNIV_INLINE +page_t* +btr_page_get( +/*=========*/ + ulint space, /* in: space id */ + ulint zip_size, /* in: compressed page size in bytes + or 0 for uncompressed pages */ + ulint page_no, /* in: page number */ + ulint mode, /* in: latch mode */ + mtr_t* mtr); /* in: mtr */ +/****************************************************************** +Gets the index id field of a page. */ +UNIV_INLINE +dulint +btr_page_get_index_id( +/*==================*/ + /* out: index id */ + const page_t* page); /* in: index page */ +/************************************************************ +Gets the node level field in an index page. */ +UNIV_INLINE +ulint +btr_page_get_level_low( +/*===================*/ + /* out: level, leaf level == 0 */ + const page_t* page); /* in: index page */ +/************************************************************ +Gets the node level field in an index page. */ +UNIV_INLINE +ulint +btr_page_get_level( +/*===============*/ + /* out: level, leaf level == 0 */ + const page_t* page, /* in: index page */ + mtr_t* mtr); /* in: mini-transaction handle */ +/************************************************************ +Gets the next index page number. */ +UNIV_INLINE +ulint +btr_page_get_next( +/*==============*/ + /* out: next page number */ + const page_t* page, /* in: index page */ + mtr_t* mtr); /* in: mini-transaction handle */ +/************************************************************ +Gets the previous index page number. */ +UNIV_INLINE +ulint +btr_page_get_prev( +/*==============*/ + /* out: prev page number */ + const page_t* page, /* in: index page */ + mtr_t* mtr); /* in: mini-transaction handle */ +/***************************************************************** +Gets pointer to the previous user record in the tree. It is assumed +that the caller has appropriate latches on the page and its neighbor. */ +UNIV_INTERN +rec_t* +btr_get_prev_user_rec( +/*==================*/ + /* out: previous user record, NULL if there is none */ + rec_t* rec, /* in: record on leaf level */ + mtr_t* mtr); /* in: mtr holding a latch on the page, and if + needed, also to the previous page */ +/***************************************************************** +Gets pointer to the next user record in the tree. It is assumed +that the caller has appropriate latches on the page and its neighbor. */ +UNIV_INTERN +rec_t* +btr_get_next_user_rec( +/*==================*/ + /* out: next user record, NULL if there is none */ + rec_t* rec, /* in: record on leaf level */ + mtr_t* mtr); /* in: mtr holding a latch on the page, and if + needed, also to the next page */ +/****************************************************************** +Releases the latch on a leaf page and bufferunfixes it. */ +UNIV_INLINE +void +btr_leaf_page_release( +/*==================*/ + buf_block_t* block, /* in: buffer block */ + ulint latch_mode, /* in: BTR_SEARCH_LEAF or + BTR_MODIFY_LEAF */ + mtr_t* mtr); /* in: mtr */ +/****************************************************************** +Gets the child node file address in a node pointer. */ +UNIV_INLINE +ulint +btr_node_ptr_get_child_page_no( +/*===========================*/ + /* out: child node address */ + const rec_t* rec, /* in: node pointer record */ + const ulint* offsets);/* in: array returned by rec_get_offsets() */ +/**************************************************************** +Creates the root node for a new index tree. */ +UNIV_INTERN +ulint +btr_create( +/*=======*/ + /* out: page number of the created root, + FIL_NULL if did not succeed */ + ulint type, /* in: type of the index */ + ulint space, /* in: space where created */ + ulint zip_size,/* in: compressed page size in bytes + or 0 for uncompressed pages */ + dulint index_id,/* in: index id */ + dict_index_t* index, /* in: index */ + mtr_t* mtr); /* in: mini-transaction handle */ +/**************************************************************** +Frees a B-tree except the root page, which MUST be freed after this +by calling btr_free_root. */ +UNIV_INTERN +void +btr_free_but_not_root( +/*==================*/ + ulint space, /* in: space where created */ + ulint zip_size, /* in: compressed page size in bytes + or 0 for uncompressed pages */ + ulint root_page_no); /* in: root page number */ +/**************************************************************** +Frees the B-tree root page. Other tree MUST already have been freed. */ +UNIV_INTERN +void +btr_free_root( +/*==========*/ + ulint space, /* in: space where created */ + ulint zip_size, /* in: compressed page size in bytes + or 0 for uncompressed pages */ + ulint root_page_no, /* in: root page number */ + mtr_t* mtr); /* in: a mini-transaction which has already + been started */ +/***************************************************************** +Makes tree one level higher by splitting the root, and inserts +the tuple. It is assumed that mtr contains an x-latch on the tree. +NOTE that the operation of this function must always succeed, +we cannot reverse it: therefore enough free disk space must be +guaranteed to be available before this function is called. */ +UNIV_INTERN +rec_t* +btr_root_raise_and_insert( +/*======================*/ + /* out: inserted record */ + btr_cur_t* cursor, /* in: cursor at which to insert: must be + on the root page; when the function returns, + the cursor is positioned on the predecessor + of the inserted record */ + const dtuple_t* tuple, /* in: tuple to insert */ + ulint n_ext, /* in: number of externally stored columns */ + mtr_t* mtr); /* in: mtr */ +/***************************************************************** +Reorganizes an index page. +IMPORTANT: if btr_page_reorganize() is invoked on a compressed leaf +page of a non-clustered index, the caller must update the insert +buffer free bits in the same mini-transaction in such a way that the +modification will be redo-logged. */ +UNIV_INTERN +ibool +btr_page_reorganize( +/*================*/ + /* out: TRUE on success, FALSE on failure */ + buf_block_t* block, /* in: page to be reorganized */ + dict_index_t* index, /* in: record descriptor */ + mtr_t* mtr); /* in: mtr */ +/***************************************************************** +Decides if the page should be split at the convergence point of +inserts converging to left. */ +UNIV_INTERN +ibool +btr_page_get_split_rec_to_left( +/*===========================*/ + /* out: TRUE if split recommended */ + btr_cur_t* cursor, /* in: cursor at which to insert */ + rec_t** split_rec);/* out: if split recommended, + the first record on upper half page, + or NULL if tuple should be first */ +/***************************************************************** +Decides if the page should be split at the convergence point of +inserts converging to right. */ +UNIV_INTERN +ibool +btr_page_get_split_rec_to_right( +/*============================*/ + /* out: TRUE if split recommended */ + btr_cur_t* cursor, /* in: cursor at which to insert */ + rec_t** split_rec);/* out: if split recommended, + the first record on upper half page, + or NULL if tuple should be first */ +/***************************************************************** +Splits an index page to halves and inserts the tuple. It is assumed +that mtr holds an x-latch to the index tree. NOTE: the tree x-latch +is released within this function! NOTE that the operation of this +function must always succeed, we cannot reverse it: therefore +enough free disk space must be guaranteed to be available before +this function is called. */ +UNIV_INTERN +rec_t* +btr_page_split_and_insert( +/*======================*/ + /* out: inserted record; NOTE: the tree + x-latch is released! NOTE: 2 free disk + pages must be available! */ + btr_cur_t* cursor, /* in: cursor at which to insert; when the + function returns, the cursor is positioned + on the predecessor of the inserted record */ + const dtuple_t* tuple, /* in: tuple to insert */ + ulint n_ext, /* in: number of externally stored columns */ + mtr_t* mtr); /* in: mtr */ +/*********************************************************** +Inserts a data tuple to a tree on a non-leaf level. It is assumed +that mtr holds an x-latch on the tree. */ +UNIV_INTERN +void +btr_insert_on_non_leaf_level( +/*=========================*/ + dict_index_t* index, /* in: index */ + ulint level, /* in: level, must be > 0 */ + dtuple_t* tuple, /* in: the record to be inserted */ + mtr_t* mtr); /* in: mtr */ +/******************************************************************** +Sets a record as the predefined minimum record. */ +UNIV_INTERN +void +btr_set_min_rec_mark( +/*=================*/ + rec_t* rec, /* in/out: record */ + mtr_t* mtr); /* in: mtr */ +/***************************************************************** +Deletes on the upper level the node pointer to a page. */ +UNIV_INTERN +void +btr_node_ptr_delete( +/*================*/ + dict_index_t* index, /* in: index tree */ + buf_block_t* block, /* in: page whose node pointer is deleted */ + mtr_t* mtr); /* in: mtr */ +#ifdef UNIV_DEBUG +/**************************************************************** +Checks that the node pointer to a page is appropriate. */ +UNIV_INTERN +ibool +btr_check_node_ptr( +/*===============*/ + /* out: TRUE */ + dict_index_t* index, /* in: index tree */ + buf_block_t* block, /* in: index page */ + mtr_t* mtr); /* in: mtr */ +#endif /* UNIV_DEBUG */ +/***************************************************************** +Tries to merge the page first to the left immediate brother if such a +brother exists, and the node pointers to the current page and to the +brother reside on the same page. If the left brother does not satisfy these +conditions, looks at the right brother. If the page is the only one on that +level lifts the records of the page to the father page, thus reducing the +tree height. It is assumed that mtr holds an x-latch on the tree and on the +page. If cursor is on the leaf level, mtr must also hold x-latches to +the brothers, if they exist. */ +UNIV_INTERN +ibool +btr_compress( +/*=========*/ + /* out: TRUE on success */ + btr_cur_t* cursor, /* in: cursor on the page to merge or lift; + the page must not be empty: in record delete + use btr_discard_page if the page would become + empty */ + mtr_t* mtr); /* in: mtr */ +/***************************************************************** +Discards a page from a B-tree. This is used to remove the last record from +a B-tree page: the whole page must be removed at the same time. This cannot +be used for the root page, which is allowed to be empty. */ +UNIV_INTERN +void +btr_discard_page( +/*=============*/ + btr_cur_t* cursor, /* in: cursor on the page to discard: not on + the root page */ + mtr_t* mtr); /* in: mtr */ +/******************************************************************** +Parses the redo log record for setting an index record as the predefined +minimum record. */ +UNIV_INTERN +byte* +btr_parse_set_min_rec_mark( +/*=======================*/ + /* out: end of log record or NULL */ + byte* ptr, /* in: buffer */ + byte* end_ptr,/* in: buffer end */ + ulint comp, /* in: nonzero=compact page format */ + page_t* page, /* in: page or NULL */ + mtr_t* mtr); /* in: mtr or NULL */ +/*************************************************************** +Parses a redo log record of reorganizing a page. */ +UNIV_INTERN +byte* +btr_parse_page_reorganize( +/*======================*/ + /* out: end of log record or NULL */ + byte* ptr, /* in: buffer */ + byte* end_ptr,/* in: buffer end */ + dict_index_t* index, /* in: record descriptor */ + buf_block_t* block, /* in: page to be reorganized, or NULL */ + mtr_t* mtr); /* in: mtr or NULL */ +/****************************************************************** +Gets the number of pages in a B-tree. */ +UNIV_INTERN +ulint +btr_get_size( +/*=========*/ + /* out: number of pages */ + dict_index_t* index, /* in: index */ + ulint flag); /* in: BTR_N_LEAF_PAGES or BTR_TOTAL_SIZE */ +/****************************************************************** +Allocates a new file page to be used in an index tree. NOTE: we assume +that the caller has made the reservation for free extents! */ +UNIV_INTERN +buf_block_t* +btr_page_alloc( +/*===========*/ + /* out: new allocated block, x-latched; + NULL if out of space */ + dict_index_t* index, /* in: index tree */ + ulint hint_page_no, /* in: hint of a good page */ + byte file_direction, /* in: direction where a possible + page split is made */ + ulint level, /* in: level where the page is placed + in the tree */ + mtr_t* mtr); /* in: mtr */ +/****************************************************************** +Frees a file page used in an index tree. NOTE: cannot free field external +storage pages because the page must contain info on its level. */ +UNIV_INTERN +void +btr_page_free( +/*==========*/ + dict_index_t* index, /* in: index tree */ + buf_block_t* block, /* in: block to be freed, x-latched */ + mtr_t* mtr); /* in: mtr */ +/****************************************************************** +Frees a file page used in an index tree. Can be used also to BLOB +external storage pages, because the page level 0 can be given as an +argument. */ +UNIV_INTERN +void +btr_page_free_low( +/*==============*/ + dict_index_t* index, /* in: index tree */ + buf_block_t* block, /* in: block to be freed, x-latched */ + ulint level, /* in: page level */ + mtr_t* mtr); /* in: mtr */ +#ifdef UNIV_BTR_PRINT +/***************************************************************** +Prints size info of a B-tree. */ +UNIV_INTERN +void +btr_print_size( +/*===========*/ + dict_index_t* index); /* in: index tree */ +/****************************************************************** +Prints directories and other info of all nodes in the index. */ +UNIV_INTERN +void +btr_print_index( +/*============*/ + dict_index_t* index, /* in: index */ + ulint width); /* in: print this many entries from start + and end */ +#endif /* UNIV_BTR_PRINT */ +/**************************************************************** +Checks the size and number of fields in a record based on the definition of +the index. */ +UNIV_INTERN +ibool +btr_index_rec_validate( +/*===================*/ + /* out: TRUE if ok */ + const rec_t* rec, /* in: index record */ + const dict_index_t* index, /* in: index */ + ibool dump_on_error); /* in: TRUE if the function + should print hex dump of record + and page on error */ +/****************************************************************** +Checks the consistency of an index tree. */ +UNIV_INTERN +ibool +btr_validate_index( +/*===============*/ + /* out: TRUE if ok */ + dict_index_t* index, /* in: index */ + trx_t* trx); /* in: transaction or NULL */ + +#define BTR_N_LEAF_PAGES 1 +#define BTR_TOTAL_SIZE 2 + +#ifndef UNIV_NONINL +#include "btr0btr.ic" +#endif + +#endif === added file 'storage/xtradb/include/btr0btr.ic' --- a/storage/xtradb/include/btr0btr.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/btr0btr.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,301 @@ +/***************************************************************************** + +Copyright (c) 1994, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +The B-tree + +Created 6/2/1994 Heikki Tuuri +*******************************************************/ + +#include "mach0data.h" +#include "mtr0mtr.h" +#include "mtr0log.h" +#include "page0zip.h" + +#define BTR_MAX_NODE_LEVEL 50 /* used in debug checking */ + +/****************************************************************** +Gets a buffer page and declares its latching order level. */ +UNIV_INLINE +buf_block_t* +btr_block_get( +/*==========*/ + ulint space, /* in: space id */ + ulint zip_size, /* in: compressed page size in bytes + or 0 for uncompressed pages */ + ulint page_no, /* in: page number */ + ulint mode, /* in: latch mode */ + mtr_t* mtr) /* in: mtr */ +{ + buf_block_t* block; + + block = buf_page_get(space, zip_size, page_no, mode, mtr); + + if (mode != RW_NO_LATCH) { + + buf_block_dbg_add_level(block, SYNC_TREE_NODE); + } + + return(block); +} + +/****************************************************************** +Gets a buffer page and declares its latching order level. */ +UNIV_INLINE +page_t* +btr_page_get( +/*=========*/ + ulint space, /* in: space id */ + ulint zip_size, /* in: compressed page size in bytes + or 0 for uncompressed pages */ + ulint page_no, /* in: page number */ + ulint mode, /* in: latch mode */ + mtr_t* mtr) /* in: mtr */ +{ + return(buf_block_get_frame(btr_block_get(space, zip_size, page_no, + mode, mtr))); +} + +/****************************************************************** +Sets the index id field of a page. */ +UNIV_INLINE +void +btr_page_set_index_id( +/*==================*/ + page_t* page, /* in: page to be created */ + page_zip_des_t* page_zip,/* in: compressed page whose uncompressed + part will be updated, or NULL */ + dulint id, /* in: index id */ + mtr_t* mtr) /* in: mtr */ +{ + if (UNIV_LIKELY_NULL(page_zip)) { + mach_write_to_8(page + (PAGE_HEADER + PAGE_INDEX_ID), id); + page_zip_write_header(page_zip, + page + (PAGE_HEADER + PAGE_INDEX_ID), + 8, mtr); + } else { + mlog_write_dulint(page + (PAGE_HEADER + PAGE_INDEX_ID), + id, mtr); + } +} + +/****************************************************************** +Gets the index id field of a page. */ +UNIV_INLINE +dulint +btr_page_get_index_id( +/*==================*/ + /* out: index id */ + const page_t* page) /* in: index page */ +{ + return(mach_read_from_8(page + PAGE_HEADER + PAGE_INDEX_ID)); +} + +/************************************************************ +Gets the node level field in an index page. */ +UNIV_INLINE +ulint +btr_page_get_level_low( +/*===================*/ + /* out: level, leaf level == 0 */ + const page_t* page) /* in: index page */ +{ + ulint level; + + ut_ad(page); + + level = mach_read_from_2(page + PAGE_HEADER + PAGE_LEVEL); + + ut_ad(level <= BTR_MAX_NODE_LEVEL); + + return(level); +} + +/************************************************************ +Gets the node level field in an index page. */ +UNIV_INLINE +ulint +btr_page_get_level( +/*===============*/ + /* out: level, leaf level == 0 */ + const page_t* page, /* in: index page */ + mtr_t* mtr __attribute__((unused))) + /* in: mini-transaction handle */ +{ + ut_ad(page && mtr); + + return(btr_page_get_level_low(page)); +} + +/************************************************************ +Sets the node level field in an index page. */ +UNIV_INLINE +void +btr_page_set_level( +/*===============*/ + page_t* page, /* in: index page */ + page_zip_des_t* page_zip,/* in: compressed page whose uncompressed + part will be updated, or NULL */ + ulint level, /* in: level, leaf level == 0 */ + mtr_t* mtr) /* in: mini-transaction handle */ +{ + ut_ad(page && mtr); + ut_ad(level <= BTR_MAX_NODE_LEVEL); + + if (UNIV_LIKELY_NULL(page_zip)) { + mach_write_to_2(page + (PAGE_HEADER + PAGE_LEVEL), level); + page_zip_write_header(page_zip, + page + (PAGE_HEADER + PAGE_LEVEL), + 2, mtr); + } else { + mlog_write_ulint(page + (PAGE_HEADER + PAGE_LEVEL), level, + MLOG_2BYTES, mtr); + } +} + +/************************************************************ +Gets the next index page number. */ +UNIV_INLINE +ulint +btr_page_get_next( +/*==============*/ + /* out: next page number */ + const page_t* page, /* in: index page */ + mtr_t* mtr __attribute__((unused))) + /* in: mini-transaction handle */ +{ + ut_ad(page && mtr); + ut_ad(mtr_memo_contains_page(mtr, page, MTR_MEMO_PAGE_X_FIX) + || mtr_memo_contains_page(mtr, page, MTR_MEMO_PAGE_S_FIX)); + + return(mach_read_from_4(page + FIL_PAGE_NEXT)); +} + +/************************************************************ +Sets the next index page field. */ +UNIV_INLINE +void +btr_page_set_next( +/*==============*/ + page_t* page, /* in: index page */ + page_zip_des_t* page_zip,/* in: compressed page whose uncompressed + part will be updated, or NULL */ + ulint next, /* in: next page number */ + mtr_t* mtr) /* in: mini-transaction handle */ +{ + ut_ad(page && mtr); + + if (UNIV_LIKELY_NULL(page_zip)) { + mach_write_to_4(page + FIL_PAGE_NEXT, next); + page_zip_write_header(page_zip, page + FIL_PAGE_NEXT, 4, mtr); + } else { + mlog_write_ulint(page + FIL_PAGE_NEXT, next, MLOG_4BYTES, mtr); + } +} + +/************************************************************ +Gets the previous index page number. */ +UNIV_INLINE +ulint +btr_page_get_prev( +/*==============*/ + /* out: prev page number */ + const page_t* page, /* in: index page */ + mtr_t* mtr __attribute__((unused))) /* in: mini-transaction handle */ +{ + ut_ad(page && mtr); + + return(mach_read_from_4(page + FIL_PAGE_PREV)); +} + +/************************************************************ +Sets the previous index page field. */ +UNIV_INLINE +void +btr_page_set_prev( +/*==============*/ + page_t* page, /* in: index page */ + page_zip_des_t* page_zip,/* in: compressed page whose uncompressed + part will be updated, or NULL */ + ulint prev, /* in: previous page number */ + mtr_t* mtr) /* in: mini-transaction handle */ +{ + ut_ad(page && mtr); + + if (UNIV_LIKELY_NULL(page_zip)) { + mach_write_to_4(page + FIL_PAGE_PREV, prev); + page_zip_write_header(page_zip, page + FIL_PAGE_PREV, 4, mtr); + } else { + mlog_write_ulint(page + FIL_PAGE_PREV, prev, MLOG_4BYTES, mtr); + } +} + +/****************************************************************** +Gets the child node file address in a node pointer. */ +UNIV_INLINE +ulint +btr_node_ptr_get_child_page_no( +/*===========================*/ + /* out: child node address */ + const rec_t* rec, /* in: node pointer record */ + const ulint* offsets)/* in: array returned by rec_get_offsets() */ +{ + const byte* field; + ulint len; + ulint page_no; + + ut_ad(!rec_offs_comp(offsets) || rec_get_node_ptr_flag(rec)); + + /* The child address is in the last field */ + field = rec_get_nth_field(rec, offsets, + rec_offs_n_fields(offsets) - 1, &len); + + ut_ad(len == 4); + + page_no = mach_read_from_4(field); + + if (UNIV_UNLIKELY(page_no == 0)) { + fprintf(stderr, + "InnoDB: a nonsensical page number 0" + " in a node ptr record at offset %lu\n", + (ulong) page_offset(rec)); + buf_page_print(page_align(rec), 0); + } + + return(page_no); +} + +/****************************************************************** +Releases the latches on a leaf page and bufferunfixes it. */ +UNIV_INLINE +void +btr_leaf_page_release( +/*==================*/ + buf_block_t* block, /* in: buffer block */ + ulint latch_mode, /* in: BTR_SEARCH_LEAF or + BTR_MODIFY_LEAF */ + mtr_t* mtr) /* in: mtr */ +{ + ut_ad(latch_mode == BTR_SEARCH_LEAF || latch_mode == BTR_MODIFY_LEAF); + ut_ad(!mtr_memo_contains(mtr, block, MTR_MEMO_MODIFY)); + + mtr_memo_release(mtr, block, + latch_mode == BTR_SEARCH_LEAF + ? MTR_MEMO_PAGE_S_FIX + : MTR_MEMO_PAGE_X_FIX); +} === added file 'storage/xtradb/include/btr0cur.h' --- a/storage/xtradb/include/btr0cur.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/btr0cur.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,742 @@ +/***************************************************************************** + +Copyright (c) 1994, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +The index tree cursor + +Created 10/16/1994 Heikki Tuuri +*******************************************************/ + +#ifndef btr0cur_h +#define btr0cur_h + +#include "univ.i" +#include "dict0dict.h" +#include "page0cur.h" +#include "btr0types.h" +#include "que0types.h" +#include "row0types.h" +#include "ha0ha.h" + +/* Mode flags for btr_cur operations; these can be ORed */ +#define BTR_NO_UNDO_LOG_FLAG 1 /* do no undo logging */ +#define BTR_NO_LOCKING_FLAG 2 /* do no record lock checking */ +#define BTR_KEEP_SYS_FLAG 4 /* sys fields will be found from the + update vector or inserted entry */ + +#define BTR_CUR_ADAPT +#define BTR_CUR_HASH_ADAPT + +#ifdef UNIV_DEBUG +/************************************************************* +Returns the page cursor component of a tree cursor. */ +UNIV_INLINE +page_cur_t* +btr_cur_get_page_cur( +/*=================*/ + /* out: pointer to page cursor + component */ + const btr_cur_t* cursor);/* in: tree cursor */ +#else /* UNIV_DEBUG */ +# define btr_cur_get_page_cur(cursor) (&(cursor)->page_cur) +#endif /* UNIV_DEBUG */ +/************************************************************* +Returns the buffer block on which the tree cursor is positioned. */ +UNIV_INLINE +buf_block_t* +btr_cur_get_block( +/*==============*/ + /* out: pointer to buffer block */ + btr_cur_t* cursor);/* in: tree cursor */ +/************************************************************* +Returns the record pointer of a tree cursor. */ +UNIV_INLINE +rec_t* +btr_cur_get_rec( +/*============*/ + /* out: pointer to record */ + btr_cur_t* cursor);/* in: tree cursor */ +/************************************************************* +Returns the compressed page on which the tree cursor is positioned. */ +UNIV_INLINE +page_zip_des_t* +btr_cur_get_page_zip( +/*=================*/ + /* out: pointer to compressed page, + or NULL if the page is not compressed */ + btr_cur_t* cursor);/* in: tree cursor */ +/************************************************************* +Invalidates a tree cursor by setting record pointer to NULL. */ +UNIV_INLINE +void +btr_cur_invalidate( +/*===============*/ + btr_cur_t* cursor);/* in: tree cursor */ +/************************************************************* +Returns the page of a tree cursor. */ +UNIV_INLINE +page_t* +btr_cur_get_page( +/*=============*/ + /* out: pointer to page */ + btr_cur_t* cursor);/* in: tree cursor */ +/************************************************************* +Returns the index of a cursor. */ +UNIV_INLINE +dict_index_t* +btr_cur_get_index( +/*==============*/ + /* out: index */ + btr_cur_t* cursor);/* in: B-tree cursor */ +/************************************************************* +Positions a tree cursor at a given record. */ +UNIV_INLINE +void +btr_cur_position( +/*=============*/ + dict_index_t* index, /* in: index */ + rec_t* rec, /* in: record in tree */ + buf_block_t* block, /* in: buffer block of rec */ + btr_cur_t* cursor);/* in: cursor */ +/************************************************************************ +Searches an index tree and positions a tree cursor on a given level. +NOTE: n_fields_cmp in tuple must be set so that it cannot be compared +to node pointer page number fields on the upper levels of the tree! +Note that if mode is PAGE_CUR_LE, which is used in inserts, then +cursor->up_match and cursor->low_match both will have sensible values. +If mode is PAGE_CUR_GE, then up_match will a have a sensible value. */ +UNIV_INTERN +void +btr_cur_search_to_nth_level( +/*========================*/ + dict_index_t* index, /* in: index */ + ulint level, /* in: the tree level of search */ + const dtuple_t* tuple, /* in: data tuple; NOTE: n_fields_cmp in + tuple must be set so that it cannot get + compared to the node ptr page number field! */ + ulint mode, /* in: PAGE_CUR_L, ...; + NOTE that if the search is made using a unique + prefix of a record, mode should be PAGE_CUR_LE, + not PAGE_CUR_GE, as the latter may end up on + the previous page of the record! Inserts + should always be made using PAGE_CUR_LE to + search the position! */ + ulint latch_mode, /* in: BTR_SEARCH_LEAF, ..., ORed with + BTR_INSERT and BTR_ESTIMATE; + cursor->left_block is used to store a pointer + to the left neighbor page, in the cases + BTR_SEARCH_PREV and BTR_MODIFY_PREV; + NOTE that if has_search_latch + is != 0, we maybe do not have a latch set + on the cursor page, we assume + the caller uses his search latch + to protect the record! */ + btr_cur_t* cursor, /* in/out: tree cursor; the cursor page is + s- or x-latched, but see also above! */ + ulint has_search_latch,/* in: latch mode the caller + currently has on btr_search_latch: + RW_S_LATCH, or 0 */ + mtr_t* mtr); /* in: mtr */ +/********************************************************************* +Opens a cursor at either end of an index. */ +UNIV_INTERN +void +btr_cur_open_at_index_side( +/*=======================*/ + ibool from_left, /* in: TRUE if open to the low end, + FALSE if to the high end */ + dict_index_t* index, /* in: index */ + ulint latch_mode, /* in: latch mode */ + btr_cur_t* cursor, /* in: cursor */ + mtr_t* mtr); /* in: mtr */ +/************************************************************************** +Positions a cursor at a randomly chosen position within a B-tree. */ +UNIV_INTERN +void +btr_cur_open_at_rnd_pos( +/*====================*/ + dict_index_t* index, /* in: index */ + ulint latch_mode, /* in: BTR_SEARCH_LEAF, ... */ + btr_cur_t* cursor, /* in/out: B-tree cursor */ + mtr_t* mtr); /* in: mtr */ +/***************************************************************** +Tries to perform an insert to a page in an index tree, next to cursor. +It is assumed that mtr holds an x-latch on the page. The operation does +not succeed if there is too little space on the page. If there is just +one record on the page, the insert will always succeed; this is to +prevent trying to split a page with just one record. */ +UNIV_INTERN +ulint +btr_cur_optimistic_insert( +/*======================*/ + /* out: DB_SUCCESS, DB_WAIT_LOCK, + DB_FAIL, or error number */ + ulint flags, /* in: undo logging and locking flags: if not + zero, the parameters index and thr should be + specified */ + btr_cur_t* cursor, /* in: cursor on page after which to insert; + cursor stays valid */ + dtuple_t* entry, /* in/out: entry to insert */ + rec_t** rec, /* out: pointer to inserted record if + succeed */ + big_rec_t** big_rec,/* out: big rec vector whose fields have to + be stored externally by the caller, or + NULL */ + ulint n_ext, /* in: number of externally stored columns */ + que_thr_t* thr, /* in: query thread or NULL */ + mtr_t* mtr); /* in: mtr; if this function returns + DB_SUCCESS on a leaf page of a secondary + index in a compressed tablespace, the + mtr must be committed before latching + any further pages */ +/***************************************************************** +Performs an insert on a page of an index tree. It is assumed that mtr +holds an x-latch on the tree and on the cursor page. If the insert is +made on the leaf level, to avoid deadlocks, mtr must also own x-latches +to brothers of page, if those brothers exist. */ +UNIV_INTERN +ulint +btr_cur_pessimistic_insert( +/*=======================*/ + /* out: DB_SUCCESS or error number */ + ulint flags, /* in: undo logging and locking flags: if not + zero, the parameter thr should be + specified; if no undo logging is specified, + then the caller must have reserved enough + free extents in the file space so that the + insertion will certainly succeed */ + btr_cur_t* cursor, /* in: cursor after which to insert; + cursor stays valid */ + dtuple_t* entry, /* in/out: entry to insert */ + rec_t** rec, /* out: pointer to inserted record if + succeed */ + big_rec_t** big_rec,/* out: big rec vector whose fields have to + be stored externally by the caller, or + NULL */ + ulint n_ext, /* in: number of externally stored columns */ + que_thr_t* thr, /* in: query thread or NULL */ + mtr_t* mtr); /* in: mtr */ +/***************************************************************** +Updates a record when the update causes no size changes in its fields. */ +UNIV_INTERN +ulint +btr_cur_update_in_place( +/*====================*/ + /* out: DB_SUCCESS or error number */ + ulint flags, /* in: undo logging and locking flags */ + btr_cur_t* cursor, /* in: cursor on the record to update; + cursor stays valid and positioned on the + same record */ + const upd_t* update, /* in: update vector */ + ulint cmpl_info,/* in: compiler info on secondary index + updates */ + que_thr_t* thr, /* in: query thread */ + mtr_t* mtr); /* in: mtr; must be committed before + latching any further pages */ +/***************************************************************** +Tries to update a record on a page in an index tree. It is assumed that mtr +holds an x-latch on the page. The operation does not succeed if there is too +little space on the page or if the update would result in too empty a page, +so that tree compression is recommended. */ +UNIV_INTERN +ulint +btr_cur_optimistic_update( +/*======================*/ + /* out: DB_SUCCESS, or DB_OVERFLOW if the + updated record does not fit, DB_UNDERFLOW + if the page would become too empty, or + DB_ZIP_OVERFLOW if there is not enough + space left on the compressed page */ + ulint flags, /* in: undo logging and locking flags */ + btr_cur_t* cursor, /* in: cursor on the record to update; + cursor stays valid and positioned on the + same record */ + const upd_t* update, /* in: update vector; this must also + contain trx id and roll ptr fields */ + ulint cmpl_info,/* in: compiler info on secondary index + updates */ + que_thr_t* thr, /* in: query thread */ + mtr_t* mtr); /* in: mtr; must be committed before + latching any further pages */ +/***************************************************************** +Performs an update of a record on a page of a tree. It is assumed +that mtr holds an x-latch on the tree and on the cursor page. If the +update is made on the leaf level, to avoid deadlocks, mtr must also +own x-latches to brothers of page, if those brothers exist. */ +UNIV_INTERN +ulint +btr_cur_pessimistic_update( +/*=======================*/ + /* out: DB_SUCCESS or error code */ + ulint flags, /* in: undo logging, locking, and rollback + flags */ + btr_cur_t* cursor, /* in: cursor on the record to update */ + mem_heap_t** heap, /* in/out: pointer to memory heap, or NULL */ + big_rec_t** big_rec,/* out: big rec vector whose fields have to + be stored externally by the caller, or NULL */ + const upd_t* update, /* in: update vector; this is allowed also + contain trx id and roll ptr fields, but + the values in update vector have no effect */ + ulint cmpl_info,/* in: compiler info on secondary index + updates */ + que_thr_t* thr, /* in: query thread */ + mtr_t* mtr); /* in: mtr; must be committed before + latching any further pages */ +/*************************************************************** +Marks a clustered index record deleted. Writes an undo log record to +undo log on this delete marking. Writes in the trx id field the id +of the deleting transaction, and in the roll ptr field pointer to the +undo log record created. */ +UNIV_INTERN +ulint +btr_cur_del_mark_set_clust_rec( +/*===========================*/ + /* out: DB_SUCCESS, DB_LOCK_WAIT, or error + number */ + ulint flags, /* in: undo logging and locking flags */ + btr_cur_t* cursor, /* in: cursor */ + ibool val, /* in: value to set */ + que_thr_t* thr, /* in: query thread */ + mtr_t* mtr); /* in: mtr */ +/*************************************************************** +Sets a secondary index record delete mark to TRUE or FALSE. */ +UNIV_INTERN +ulint +btr_cur_del_mark_set_sec_rec( +/*=========================*/ + /* out: DB_SUCCESS, DB_LOCK_WAIT, or error + number */ + ulint flags, /* in: locking flag */ + btr_cur_t* cursor, /* in: cursor */ + ibool val, /* in: value to set */ + que_thr_t* thr, /* in: query thread */ + mtr_t* mtr); /* in: mtr */ +/*************************************************************** +Clear a secondary index record's delete mark. This function is only +used by the insert buffer insert merge mechanism. */ +UNIV_INTERN +void +btr_cur_del_unmark_for_ibuf( +/*========================*/ + rec_t* rec, /* in/out: record to delete unmark */ + page_zip_des_t* page_zip, /* in/out: compressed page + corresponding to rec, or NULL + when the tablespace is + uncompressed */ + mtr_t* mtr); /* in: mtr */ +/***************************************************************** +Tries to compress a page of the tree if it seems useful. It is assumed +that mtr holds an x-latch on the tree and on the cursor page. To avoid +deadlocks, mtr must also own x-latches to brothers of page, if those +brothers exist. NOTE: it is assumed that the caller has reserved enough +free extents so that the compression will always succeed if done! */ +UNIV_INTERN +ibool +btr_cur_compress_if_useful( +/*=======================*/ + /* out: TRUE if compression occurred */ + btr_cur_t* cursor, /* in: cursor on the page to compress; + cursor does not stay valid if compression + occurs */ + mtr_t* mtr); /* in: mtr */ +/*********************************************************** +Removes the record on which the tree cursor is positioned. It is assumed +that the mtr has an x-latch on the page where the cursor is positioned, +but no latch on the whole tree. */ +UNIV_INTERN +ibool +btr_cur_optimistic_delete( +/*======================*/ + /* out: TRUE if success, i.e., the page + did not become too empty */ + btr_cur_t* cursor, /* in: cursor on the record to delete; + cursor stays valid: if deletion succeeds, + on function exit it points to the successor + of the deleted record */ + mtr_t* mtr); /* in: mtr; if this function returns + TRUE on a leaf page of a secondary + index, the mtr must be committed + before latching any further pages */ +/***************************************************************** +Removes the record on which the tree cursor is positioned. Tries +to compress the page if its fillfactor drops below a threshold +or if it is the only page on the level. It is assumed that mtr holds +an x-latch on the tree and on the cursor page. To avoid deadlocks, +mtr must also own x-latches to brothers of page, if those brothers +exist. */ +UNIV_INTERN +ibool +btr_cur_pessimistic_delete( +/*=======================*/ + /* out: TRUE if compression occurred */ + ulint* err, /* out: DB_SUCCESS or DB_OUT_OF_FILE_SPACE; + the latter may occur because we may have + to update node pointers on upper levels, + and in the case of variable length keys + these may actually grow in size */ + ibool has_reserved_extents, /* in: TRUE if the + caller has already reserved enough free + extents so that he knows that the operation + will succeed */ + btr_cur_t* cursor, /* in: cursor on the record to delete; + if compression does not occur, the cursor + stays valid: it points to successor of + deleted record on function exit */ + enum trx_rb_ctx rb_ctx, /* in: rollback context */ + mtr_t* mtr); /* in: mtr */ +/*************************************************************** +Parses a redo log record of updating a record in-place. */ +UNIV_INTERN +byte* +btr_cur_parse_update_in_place( +/*==========================*/ + /* out: end of log record or NULL */ + byte* ptr, /* in: buffer */ + byte* end_ptr,/* in: buffer end */ + page_t* page, /* in/out: page or NULL */ + page_zip_des_t* page_zip,/* in/out: compressed page, or NULL */ + dict_index_t* index); /* in: index corresponding to page */ +/******************************************************************** +Parses the redo log record for delete marking or unmarking of a clustered +index record. */ +UNIV_INTERN +byte* +btr_cur_parse_del_mark_set_clust_rec( +/*=================================*/ + /* out: end of log record or NULL */ + byte* ptr, /* in: buffer */ + byte* end_ptr,/* in: buffer end */ + page_t* page, /* in/out: page or NULL */ + page_zip_des_t* page_zip,/* in/out: compressed page, or NULL */ + dict_index_t* index); /* in: index corresponding to page */ +/******************************************************************** +Parses the redo log record for delete marking or unmarking of a secondary +index record. */ +UNIV_INTERN +byte* +btr_cur_parse_del_mark_set_sec_rec( +/*===============================*/ + /* out: end of log record or NULL */ + byte* ptr, /* in: buffer */ + byte* end_ptr,/* in: buffer end */ + page_t* page, /* in/out: page or NULL */ + page_zip_des_t* page_zip);/* in/out: compressed page, or NULL */ +/*********************************************************************** +Estimates the number of rows in a given index range. */ +UNIV_INTERN +ib_int64_t +btr_estimate_n_rows_in_range( +/*=========================*/ + /* out: estimated number of rows */ + dict_index_t* index, /* in: index */ + const dtuple_t* tuple1, /* in: range start, may also be empty tuple */ + ulint mode1, /* in: search mode for range start */ + const dtuple_t* tuple2, /* in: range end, may also be empty tuple */ + ulint mode2); /* in: search mode for range end */ +/*********************************************************************** +Estimates the number of different key values in a given index, for +each n-column prefix of the index where n <= dict_index_get_n_unique(index). +The estimates are stored in the array index->stat_n_diff_key_vals. */ +UNIV_INTERN +void +btr_estimate_number_of_different_key_vals( +/*======================================*/ + dict_index_t* index); /* in: index */ +/*********************************************************************** +Marks not updated extern fields as not-owned by this record. The ownership +is transferred to the updated record which is inserted elsewhere in the +index tree. In purge only the owner of externally stored field is allowed +to free the field. */ +UNIV_INTERN +void +btr_cur_mark_extern_inherited_fields( +/*=================================*/ + page_zip_des_t* page_zip,/* in/out: compressed page whose uncompressed + part will be updated, or NULL */ + rec_t* rec, /* in/out: record in a clustered index */ + dict_index_t* index, /* in: index of the page */ + const ulint* offsets,/* in: array returned by rec_get_offsets() */ + const upd_t* update, /* in: update vector */ + mtr_t* mtr); /* in: mtr, or NULL if not logged */ +/*********************************************************************** +The complement of the previous function: in an update entry may inherit +some externally stored fields from a record. We must mark them as inherited +in entry, so that they are not freed in a rollback. */ +UNIV_INTERN +void +btr_cur_mark_dtuple_inherited_extern( +/*=================================*/ + dtuple_t* entry, /* in/out: updated entry to be + inserted to clustered index */ + const upd_t* update); /* in: update vector */ +/*********************************************************************** +Marks all extern fields in a dtuple as owned by the record. */ +UNIV_INTERN +void +btr_cur_unmark_dtuple_extern_fields( +/*================================*/ + dtuple_t* entry); /* in/out: clustered index entry */ +/*********************************************************************** +Stores the fields in big_rec_vec to the tablespace and puts pointers to +them in rec. The extern flags in rec will have to be set beforehand. +The fields are stored on pages allocated from leaf node +file segment of the index tree. */ +UNIV_INTERN +ulint +btr_store_big_rec_extern_fields( +/*============================*/ + /* out: DB_SUCCESS or error */ + dict_index_t* index, /* in: index of rec; the index tree + MUST be X-latched */ + buf_block_t* rec_block, /* in/out: block containing rec */ + rec_t* rec, /* in: record */ + const ulint* offsets, /* in: rec_get_offsets(rec, index); + the "external storage" flags in offsets + will not correspond to rec when + this function returns */ + big_rec_t* big_rec_vec, /* in: vector containing fields + to be stored externally */ + mtr_t* local_mtr); /* in: mtr containing the latch to + rec and to the tree */ +/*********************************************************************** +Frees the space in an externally stored field to the file space +management if the field in data is owned the externally stored field, +in a rollback we may have the additional condition that the field must +not be inherited. */ +UNIV_INTERN +void +btr_free_externally_stored_field( +/*=============================*/ + dict_index_t* index, /* in: index of the data, the index + tree MUST be X-latched; if the tree + height is 1, then also the root page + must be X-latched! (this is relevant + in the case this function is called + from purge where 'data' is located on + an undo log page, not an index + page) */ + byte* field_ref, /* in/out: field reference */ + const rec_t* rec, /* in: record containing field_ref, for + page_zip_write_blob_ptr(), or NULL */ + const ulint* offsets, /* in: rec_get_offsets(rec, index), + or NULL */ + page_zip_des_t* page_zip, /* in: compressed page corresponding + to rec, or NULL if rec == NULL */ + ulint i, /* in: field number of field_ref; + ignored if rec == NULL */ + enum trx_rb_ctx rb_ctx, /* in: rollback context */ + mtr_t* local_mtr); /* in: mtr containing the latch to + data an an X-latch to the index + tree */ +/*********************************************************************** +Copies the prefix of an externally stored field of a record. The +clustered index record must be protected by a lock or a page latch. */ +UNIV_INTERN +ulint +btr_copy_externally_stored_field_prefix( +/*====================================*/ + /* out: the length of the copied field, + or 0 if the column is being or has been + deleted */ + byte* buf, /* out: the field, or a prefix of it */ + ulint len, /* in: length of buf, in bytes */ + ulint zip_size,/* in: nonzero=compressed BLOB page size, + zero for uncompressed BLOBs */ + const byte* data, /* in: 'internally' stored part of the + field containing also the reference to + the external part; must be protected by + a lock or a page latch */ + ulint local_len);/* in: length of data, in bytes */ +/*********************************************************************** +Copies an externally stored field of a record to mem heap. */ +UNIV_INTERN +byte* +btr_rec_copy_externally_stored_field( +/*=================================*/ + /* out: the field copied to heap */ + const rec_t* rec, /* in: record in a clustered index; + must be protected by a lock or a page latch */ + const ulint* offsets,/* in: array returned by rec_get_offsets() */ + ulint zip_size,/* in: nonzero=compressed BLOB page size, + zero for uncompressed BLOBs */ + ulint no, /* in: field number */ + ulint* len, /* out: length of the field */ + mem_heap_t* heap); /* in: mem heap */ +/*********************************************************************** +Flags the data tuple fields that are marked as extern storage in the +update vector. We use this function to remember which fields we must +mark as extern storage in a record inserted for an update. */ +UNIV_INTERN +ulint +btr_push_update_extern_fields( +/*==========================*/ + /* out: number of flagged external columns */ + dtuple_t* tuple, /* in/out: data tuple */ + const upd_t* update, /* in: update vector */ + mem_heap_t* heap) /* in: memory heap */ + __attribute__((nonnull)); + +/*######################################################################*/ + +/* In the pessimistic delete, if the page data size drops below this +limit, merging it to a neighbor is tried */ + +#define BTR_CUR_PAGE_COMPRESS_LIMIT (UNIV_PAGE_SIZE / 2) + +/* A slot in the path array. We store here info on a search path down the +tree. Each slot contains data on a single level of the tree. */ + +typedef struct btr_path_struct btr_path_t; +struct btr_path_struct{ + ulint nth_rec; /* index of the record + where the page cursor stopped on + this level (index in alphabetical + order); value ULINT_UNDEFINED + denotes array end */ + ulint n_recs; /* number of records on the page */ +}; + +#define BTR_PATH_ARRAY_N_SLOTS 250 /* size of path array (in slots) */ + +/* The tree cursor: the definition appears here only for the compiler +to know struct size! */ + +struct btr_cur_struct { + dict_index_t* index; /* index where positioned */ + page_cur_t page_cur; /* page cursor */ + buf_block_t* left_block; /* this field is used to store + a pointer to the left neighbor + page, in the cases + BTR_SEARCH_PREV and + BTR_MODIFY_PREV */ + /*------------------------------*/ + que_thr_t* thr; /* this field is only used when + btr_cur_search_... is called for an + index entry insertion: the calling + query thread is passed here to be + used in the insert buffer */ + /*------------------------------*/ + /* The following fields are used in btr_cur_search... to pass + information: */ + ulint flag; /* BTR_CUR_HASH, BTR_CUR_HASH_FAIL, + BTR_CUR_BINARY, or + BTR_CUR_INSERT_TO_IBUF */ + ulint tree_height; /* Tree height if the search is done + for a pessimistic insert or update + operation */ + ulint up_match; /* If the search mode was PAGE_CUR_LE, + the number of matched fields to the + the first user record to the right of + the cursor record after + btr_cur_search_...; + for the mode PAGE_CUR_GE, the matched + fields to the first user record AT THE + CURSOR or to the right of it; + NOTE that the up_match and low_match + values may exceed the correct values + for comparison to the adjacent user + record if that record is on a + different leaf page! (See the note in + row_ins_duplicate_key.) */ + ulint up_bytes; /* number of matched bytes to the + right at the time cursor positioned; + only used internally in searches: not + defined after the search */ + ulint low_match; /* if search mode was PAGE_CUR_LE, + the number of matched fields to the + first user record AT THE CURSOR or + to the left of it after + btr_cur_search_...; + NOT defined for PAGE_CUR_GE or any + other search modes; see also the NOTE + in up_match! */ + ulint low_bytes; /* number of matched bytes to the + right at the time cursor positioned; + only used internally in searches: not + defined after the search */ + ulint n_fields; /* prefix length used in a hash + search if hash_node != NULL */ + ulint n_bytes; /* hash prefix bytes if hash_node != + NULL */ + ulint fold; /* fold value used in the search if + flag is BTR_CUR_HASH */ + /*------------------------------*/ + btr_path_t* path_arr; /* in estimating the number of + rows in range, we store in this array + information of the path through + the tree */ +}; + +/* Values for the flag documenting the used search method */ +#define BTR_CUR_HASH 1 /* successful shortcut using the hash + index */ +#define BTR_CUR_HASH_FAIL 2 /* failure using hash, success using + binary search: the misleading hash + reference is stored in the field + hash_node, and might be necessary to + update */ +#define BTR_CUR_BINARY 3 /* success using the binary search */ +#define BTR_CUR_INSERT_TO_IBUF 4 /* performed the intended insert to + the insert buffer */ + +/* If pessimistic delete fails because of lack of file space, +there is still a good change of success a little later: try this many times, +and sleep this many microseconds in between */ +#define BTR_CUR_RETRY_DELETE_N_TIMES 100 +#define BTR_CUR_RETRY_SLEEP_TIME 50000 + +/* The reference in a field for which data is stored on a different page. +The reference is at the end of the 'locally' stored part of the field. +'Locally' means storage in the index record. +We store locally a long enough prefix of each column so that we can determine +the ordering parts of each index record without looking into the externally +stored part. */ + +/*--------------------------------------*/ +#define BTR_EXTERN_SPACE_ID 0 /* space id where stored */ +#define BTR_EXTERN_PAGE_NO 4 /* page no where stored */ +#define BTR_EXTERN_OFFSET 8 /* offset of BLOB header + on that page */ +#define BTR_EXTERN_LEN 12 /* 8 bytes containing the + length of the externally + stored part of the BLOB. + The 2 highest bits are + reserved to the flags below. */ +/*--------------------------------------*/ +/* #define BTR_EXTERN_FIELD_REF_SIZE 20 // moved to btr0types.h */ + +/* The highest bit of BTR_EXTERN_LEN (i.e., the highest bit of the byte +at lowest address) is set to 1 if this field does not 'own' the externally +stored field; only the owner field is allowed to free the field in purge! +If the 2nd highest bit is 1 then it means that the externally stored field +was inherited from an earlier version of the row. In rollback we are not +allowed to free an inherited external field. */ + +#define BTR_EXTERN_OWNER_FLAG 128 +#define BTR_EXTERN_INHERITED_FLAG 64 + +extern ulint btr_cur_n_non_sea; +extern ulint btr_cur_n_sea; +extern ulint btr_cur_n_non_sea_old; +extern ulint btr_cur_n_sea_old; + +#ifndef UNIV_NONINL +#include "btr0cur.ic" +#endif + +#endif === added file 'storage/xtradb/include/btr0cur.ic' --- a/storage/xtradb/include/btr0cur.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/btr0cur.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,200 @@ +/***************************************************************************** + +Copyright (c) 1994, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +The index tree cursor + +Created 10/16/1994 Heikki Tuuri +*******************************************************/ + +#include "btr0btr.h" + +#ifdef UNIV_DEBUG +/************************************************************* +Returns the page cursor component of a tree cursor. */ +UNIV_INLINE +page_cur_t* +btr_cur_get_page_cur( +/*=================*/ + /* out: pointer to page cursor + component */ + const btr_cur_t* cursor) /* in: tree cursor */ +{ + return(&((btr_cur_t*) cursor)->page_cur); +} +#endif /* UNIV_DEBUG */ +/************************************************************* +Returns the buffer block on which the tree cursor is positioned. */ +UNIV_INLINE +buf_block_t* +btr_cur_get_block( +/*==============*/ + /* out: pointer to buffer block */ + btr_cur_t* cursor) /* in: tree cursor */ +{ + return(page_cur_get_block(btr_cur_get_page_cur(cursor))); +} + +/************************************************************* +Returns the record pointer of a tree cursor. */ +UNIV_INLINE +rec_t* +btr_cur_get_rec( +/*============*/ + /* out: pointer to record */ + btr_cur_t* cursor) /* in: tree cursor */ +{ + return(page_cur_get_rec(&(cursor->page_cur))); +} + +/************************************************************* +Returns the compressed page on which the tree cursor is positioned. */ +UNIV_INLINE +page_zip_des_t* +btr_cur_get_page_zip( +/*=================*/ + /* out: pointer to compressed page, + or NULL if the page is not compressed */ + btr_cur_t* cursor) /* in: tree cursor */ +{ + return(buf_block_get_page_zip(btr_cur_get_block(cursor))); +} + +/************************************************************* +Invalidates a tree cursor by setting record pointer to NULL. */ +UNIV_INLINE +void +btr_cur_invalidate( +/*===============*/ + btr_cur_t* cursor) /* in: tree cursor */ +{ + page_cur_invalidate(&(cursor->page_cur)); +} + +/************************************************************* +Returns the page of a tree cursor. */ +UNIV_INLINE +page_t* +btr_cur_get_page( +/*=============*/ + /* out: pointer to page */ + btr_cur_t* cursor) /* in: tree cursor */ +{ + return(page_align(page_cur_get_rec(&(cursor->page_cur)))); +} + +/************************************************************* +Returns the index of a cursor. */ +UNIV_INLINE +dict_index_t* +btr_cur_get_index( +/*==============*/ + /* out: index */ + btr_cur_t* cursor) /* in: B-tree cursor */ +{ + return(cursor->index); +} + +/************************************************************* +Positions a tree cursor at a given record. */ +UNIV_INLINE +void +btr_cur_position( +/*=============*/ + dict_index_t* index, /* in: index */ + rec_t* rec, /* in: record in tree */ + buf_block_t* block, /* in: buffer block of rec */ + btr_cur_t* cursor) /* out: cursor */ +{ + ut_ad(page_align(rec) == block->frame); + + page_cur_position(rec, block, btr_cur_get_page_cur(cursor)); + + cursor->index = index; +} + +/************************************************************************* +Checks if compressing an index page where a btr cursor is placed makes +sense. */ +UNIV_INLINE +ibool +btr_cur_compress_recommendation( +/*============================*/ + /* out: TRUE if compression is recommended */ + btr_cur_t* cursor, /* in: btr cursor */ + mtr_t* mtr) /* in: mtr */ +{ + page_t* page; + + ut_ad(mtr_memo_contains(mtr, btr_cur_get_block(cursor), + MTR_MEMO_PAGE_X_FIX)); + + page = btr_cur_get_page(cursor); + + if ((page_get_data_size(page) < BTR_CUR_PAGE_COMPRESS_LIMIT) + || ((btr_page_get_next(page, mtr) == FIL_NULL) + && (btr_page_get_prev(page, mtr) == FIL_NULL))) { + + /* The page fillfactor has dropped below a predefined + minimum value OR the level in the B-tree contains just + one page: we recommend compression if this is not the + root page. */ + + return(dict_index_get_page(cursor->index) + != page_get_page_no(page)); + } + + return(FALSE); +} + +/************************************************************************* +Checks if the record on which the cursor is placed can be deleted without +making tree compression necessary (or, recommended). */ +UNIV_INLINE +ibool +btr_cur_can_delete_without_compress( +/*================================*/ + /* out: TRUE if can be deleted without + recommended compression */ + btr_cur_t* cursor, /* in: btr cursor */ + ulint rec_size,/* in: rec_get_size(btr_cur_get_rec(cursor))*/ + mtr_t* mtr) /* in: mtr */ +{ + page_t* page; + + ut_ad(mtr_memo_contains(mtr, btr_cur_get_block(cursor), + MTR_MEMO_PAGE_X_FIX)); + + page = btr_cur_get_page(cursor); + + if ((page_get_data_size(page) - rec_size < BTR_CUR_PAGE_COMPRESS_LIMIT) + || ((btr_page_get_next(page, mtr) == FIL_NULL) + && (btr_page_get_prev(page, mtr) == FIL_NULL)) + || (page_get_n_recs(page) < 2)) { + + /* The page fillfactor will drop below a predefined + minimum value, OR the level in the B-tree contains just + one page, OR the page will become empty: we recommend + compression if this is not the root page. */ + + return(dict_index_get_page(cursor->index) + == page_get_page_no(page)); + } + + return(TRUE); +} === added file 'storage/xtradb/include/btr0pcur.h' --- a/storage/xtradb/include/btr0pcur.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/btr0pcur.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,545 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +The index tree persistent cursor + +Created 2/23/1996 Heikki Tuuri +*******************************************************/ + +#ifndef btr0pcur_h +#define btr0pcur_h + +#include "univ.i" +#include "dict0dict.h" +#include "data0data.h" +#include "mtr0mtr.h" +#include "page0cur.h" +#include "btr0cur.h" +#include "btr0btr.h" +#include "btr0types.h" + +/* Relative positions for a stored cursor position */ +#define BTR_PCUR_ON 1 +#define BTR_PCUR_BEFORE 2 +#define BTR_PCUR_AFTER 3 +/* Note that if the tree is not empty, btr_pcur_store_position does not +use the following, but only uses the above three alternatives, where the +position is stored relative to a specific record: this makes implementation +of a scroll cursor easier */ +#define BTR_PCUR_BEFORE_FIRST_IN_TREE 4 /* in an empty tree */ +#define BTR_PCUR_AFTER_LAST_IN_TREE 5 /* in an empty tree */ + +/****************************************************************** +Allocates memory for a persistent cursor object and initializes the cursor. */ +UNIV_INTERN +btr_pcur_t* +btr_pcur_create_for_mysql(void); +/*============================*/ + /* out, own: persistent cursor */ +/****************************************************************** +Frees the memory for a persistent cursor object. */ +UNIV_INTERN +void +btr_pcur_free_for_mysql( +/*====================*/ + btr_pcur_t* cursor); /* in, own: persistent cursor */ +/****************************************************************** +Copies the stored position of a pcur to another pcur. */ +UNIV_INTERN +void +btr_pcur_copy_stored_position( +/*==========================*/ + btr_pcur_t* pcur_receive, /* in: pcur which will receive the + position info */ + btr_pcur_t* pcur_donate); /* in: pcur from which the info is + copied */ +/****************************************************************** +Sets the old_rec_buf field to NULL. */ +UNIV_INLINE +void +btr_pcur_init( +/*==========*/ + btr_pcur_t* pcur); /* in: persistent cursor */ +/****************************************************************** +Initializes and opens a persistent cursor to an index tree. It should be +closed with btr_pcur_close. */ +UNIV_INLINE +void +btr_pcur_open( +/*==========*/ + dict_index_t* index, /* in: index */ + const dtuple_t* tuple, /* in: tuple on which search done */ + ulint mode, /* in: PAGE_CUR_L, ...; + NOTE that if the search is made using a unique + prefix of a record, mode should be + PAGE_CUR_LE, not PAGE_CUR_GE, as the latter + may end up on the previous page from the + record! */ + ulint latch_mode,/* in: BTR_SEARCH_LEAF, ... */ + btr_pcur_t* cursor, /* in: memory buffer for persistent cursor */ + mtr_t* mtr); /* in: mtr */ +/****************************************************************** +Opens an persistent cursor to an index tree without initializing the +cursor. */ +UNIV_INLINE +void +btr_pcur_open_with_no_init( +/*=======================*/ + dict_index_t* index, /* in: index */ + const dtuple_t* tuple, /* in: tuple on which search done */ + ulint mode, /* in: PAGE_CUR_L, ...; + NOTE that if the search is made using a unique + prefix of a record, mode should be + PAGE_CUR_LE, not PAGE_CUR_GE, as the latter + may end up on the previous page of the + record! */ + ulint latch_mode,/* in: BTR_SEARCH_LEAF, ...; + NOTE that if has_search_latch != 0 then + we maybe do not acquire a latch on the cursor + page, but assume that the caller uses his + btr search latch to protect the record! */ + btr_pcur_t* cursor, /* in: memory buffer for persistent cursor */ + ulint has_search_latch,/* in: latch mode the caller + currently has on btr_search_latch: + RW_S_LATCH, or 0 */ + mtr_t* mtr); /* in: mtr */ +/********************************************************************* +Opens a persistent cursor at either end of an index. */ +UNIV_INLINE +void +btr_pcur_open_at_index_side( +/*========================*/ + ibool from_left, /* in: TRUE if open to the low end, + FALSE if to the high end */ + dict_index_t* index, /* in: index */ + ulint latch_mode, /* in: latch mode */ + btr_pcur_t* pcur, /* in: cursor */ + ibool do_init, /* in: TRUE if should be initialized */ + mtr_t* mtr); /* in: mtr */ +/****************************************************************** +Gets the up_match value for a pcur after a search. */ +UNIV_INLINE +ulint +btr_pcur_get_up_match( +/*==================*/ + /* out: number of matched fields at the cursor + or to the right if search mode was PAGE_CUR_GE, + otherwise undefined */ + btr_pcur_t* cursor); /* in: memory buffer for persistent cursor */ +/****************************************************************** +Gets the low_match value for a pcur after a search. */ +UNIV_INLINE +ulint +btr_pcur_get_low_match( +/*===================*/ + /* out: number of matched fields at the cursor + or to the right if search mode was PAGE_CUR_LE, + otherwise undefined */ + btr_pcur_t* cursor); /* in: memory buffer for persistent cursor */ +/****************************************************************** +If mode is PAGE_CUR_G or PAGE_CUR_GE, opens a persistent cursor on the first +user record satisfying the search condition, in the case PAGE_CUR_L or +PAGE_CUR_LE, on the last user record. If no such user record exists, then +in the first case sets the cursor after last in tree, and in the latter case +before first in tree. The latching mode must be BTR_SEARCH_LEAF or +BTR_MODIFY_LEAF. */ +UNIV_INTERN +void +btr_pcur_open_on_user_rec( +/*======================*/ + dict_index_t* index, /* in: index */ + const dtuple_t* tuple, /* in: tuple on which search done */ + ulint mode, /* in: PAGE_CUR_L, ... */ + ulint latch_mode, /* in: BTR_SEARCH_LEAF or + BTR_MODIFY_LEAF */ + btr_pcur_t* cursor, /* in: memory buffer for persistent + cursor */ + mtr_t* mtr); /* in: mtr */ +/************************************************************************** +Positions a cursor at a randomly chosen position within a B-tree. */ +UNIV_INLINE +void +btr_pcur_open_at_rnd_pos( +/*=====================*/ + dict_index_t* index, /* in: index */ + ulint latch_mode, /* in: BTR_SEARCH_LEAF, ... */ + btr_pcur_t* cursor, /* in/out: B-tree pcur */ + mtr_t* mtr); /* in: mtr */ +/****************************************************************** +Frees the possible old_rec_buf buffer of a persistent cursor and sets the +latch mode of the persistent cursor to BTR_NO_LATCHES. */ +UNIV_INLINE +void +btr_pcur_close( +/*===========*/ + btr_pcur_t* cursor); /* in: persistent cursor */ +/****************************************************************** +The position of the cursor is stored by taking an initial segment of the +record the cursor is positioned on, before, or after, and copying it to the +cursor data structure, or just setting a flag if the cursor id before the +first in an EMPTY tree, or after the last in an EMPTY tree. NOTE that the +page where the cursor is positioned must not be empty if the index tree is +not totally empty! */ +UNIV_INTERN +void +btr_pcur_store_position( +/*====================*/ + btr_pcur_t* cursor, /* in: persistent cursor */ + mtr_t* mtr); /* in: mtr */ +/****************************************************************** +Restores the stored position of a persistent cursor bufferfixing the page and +obtaining the specified latches. If the cursor position was saved when the +(1) cursor was positioned on a user record: this function restores the position +to the last record LESS OR EQUAL to the stored record; +(2) cursor was positioned on a page infimum record: restores the position to +the last record LESS than the user record which was the successor of the page +infimum; +(3) cursor was positioned on the page supremum: restores to the first record +GREATER than the user record which was the predecessor of the supremum. +(4) cursor was positioned before the first or after the last in an empty tree: +restores to before first or after the last in the tree. */ +UNIV_INTERN +ibool +btr_pcur_restore_position( +/*======================*/ + /* out: TRUE if the cursor position + was stored when it was on a user record + and it can be restored on a user record + whose ordering fields are identical to + the ones of the original user record */ + ulint latch_mode, /* in: BTR_SEARCH_LEAF, ... */ + btr_pcur_t* cursor, /* in: detached persistent cursor */ + mtr_t* mtr); /* in: mtr */ +/****************************************************************** +If the latch mode of the cursor is BTR_LEAF_SEARCH or BTR_LEAF_MODIFY, +releases the page latch and bufferfix reserved by the cursor. +NOTE! In the case of BTR_LEAF_MODIFY, there should not exist changes +made by the current mini-transaction to the data protected by the +cursor latch, as then the latch must not be released until mtr_commit. */ +UNIV_INTERN +void +btr_pcur_release_leaf( +/*==================*/ + btr_pcur_t* cursor, /* in: persistent cursor */ + mtr_t* mtr); /* in: mtr */ +/************************************************************* +Gets the rel_pos field for a cursor whose position has been stored. */ +UNIV_INLINE +ulint +btr_pcur_get_rel_pos( +/*=================*/ + /* out: BTR_PCUR_ON, ... */ + const btr_pcur_t* cursor);/* in: persistent cursor */ +/************************************************************* +Sets the mtr field for a pcur. */ +UNIV_INLINE +void +btr_pcur_set_mtr( +/*=============*/ + btr_pcur_t* cursor, /* in: persistent cursor */ + mtr_t* mtr); /* in, own: mtr */ +/************************************************************* +Gets the mtr field for a pcur. */ +UNIV_INLINE +mtr_t* +btr_pcur_get_mtr( +/*=============*/ + /* out: mtr */ + btr_pcur_t* cursor); /* in: persistent cursor */ +/****************************************************************** +Commits the pcur mtr and sets the pcur latch mode to BTR_NO_LATCHES, +that is, the cursor becomes detached. If there have been modifications +to the page where pcur is positioned, this can be used instead of +btr_pcur_release_leaf. Function btr_pcur_store_position should be used +before calling this, if restoration of cursor is wanted later. */ +UNIV_INLINE +void +btr_pcur_commit( +/*============*/ + btr_pcur_t* pcur); /* in: persistent cursor */ +/****************************************************************** +Differs from btr_pcur_commit in that we can specify the mtr to commit. */ +UNIV_INLINE +void +btr_pcur_commit_specify_mtr( +/*========================*/ + btr_pcur_t* pcur, /* in: persistent cursor */ + mtr_t* mtr); /* in: mtr to commit */ +/****************************************************************** +Tests if a cursor is detached: that is the latch mode is BTR_NO_LATCHES. */ +UNIV_INLINE +ibool +btr_pcur_is_detached( +/*=================*/ + /* out: TRUE if detached */ + btr_pcur_t* pcur); /* in: persistent cursor */ +/************************************************************* +Moves the persistent cursor to the next record in the tree. If no records are +left, the cursor stays 'after last in tree'. */ +UNIV_INLINE +ibool +btr_pcur_move_to_next( +/*==================*/ + /* out: TRUE if the cursor was not after last + in tree */ + btr_pcur_t* cursor, /* in: persistent cursor; NOTE that the + function may release the page latch */ + mtr_t* mtr); /* in: mtr */ +/************************************************************* +Moves the persistent cursor to the previous record in the tree. If no records +are left, the cursor stays 'before first in tree'. */ +UNIV_INTERN +ibool +btr_pcur_move_to_prev( +/*==================*/ + /* out: TRUE if the cursor was not before first + in tree */ + btr_pcur_t* cursor, /* in: persistent cursor; NOTE that the + function may release the page latch */ + mtr_t* mtr); /* in: mtr */ +/************************************************************* +Moves the persistent cursor to the last record on the same page. */ +UNIV_INLINE +void +btr_pcur_move_to_last_on_page( +/*==========================*/ + btr_pcur_t* cursor, /* in: persistent cursor */ + mtr_t* mtr); /* in: mtr */ +/************************************************************* +Moves the persistent cursor to the next user record in the tree. If no user +records are left, the cursor ends up 'after last in tree'. */ +UNIV_INLINE +ibool +btr_pcur_move_to_next_user_rec( +/*===========================*/ + /* out: TRUE if the cursor moved forward, + ending on a user record */ + btr_pcur_t* cursor, /* in: persistent cursor; NOTE that the + function may release the page latch */ + mtr_t* mtr); /* in: mtr */ +/************************************************************* +Moves the persistent cursor to the first record on the next page. +Releases the latch on the current page, and bufferunfixes it. +Note that there must not be modifications on the current page, +as then the x-latch can be released only in mtr_commit. */ +UNIV_INTERN +void +btr_pcur_move_to_next_page( +/*=======================*/ + btr_pcur_t* cursor, /* in: persistent cursor; must be on the + last record of the current page */ + mtr_t* mtr); /* in: mtr */ +/************************************************************* +Moves the persistent cursor backward if it is on the first record +of the page. Releases the latch on the current page, and bufferunfixes +it. Note that to prevent a possible deadlock, the operation first +stores the position of the cursor, releases the leaf latch, acquires +necessary latches and restores the cursor position again before returning. +The alphabetical position of the cursor is guaranteed to be sensible +on return, but it may happen that the cursor is not positioned on the +last record of any page, because the structure of the tree may have +changed while the cursor had no latches. */ +UNIV_INTERN +void +btr_pcur_move_backward_from_page( +/*=============================*/ + btr_pcur_t* cursor, /* in: persistent cursor, must be on the + first record of the current page */ + mtr_t* mtr); /* in: mtr */ +#ifdef UNIV_DEBUG +/************************************************************* +Returns the btr cursor component of a persistent cursor. */ +UNIV_INLINE +btr_cur_t* +btr_pcur_get_btr_cur( +/*=================*/ + /* out: pointer to + btr cursor component */ + const btr_pcur_t* cursor); /* in: persistent cursor */ +/************************************************************* +Returns the page cursor component of a persistent cursor. */ +UNIV_INLINE +page_cur_t* +btr_pcur_get_page_cur( +/*==================*/ + /* out: pointer to + page cursor component */ + const btr_pcur_t* cursor); /* in: persistent cursor */ +#else /* UNIV_DEBUG */ +# define btr_pcur_get_btr_cur(cursor) (&(cursor)->btr_cur) +# define btr_pcur_get_page_cur(cursor) (&(cursor)->btr_cur.page_cur) +#endif /* UNIV_DEBUG */ +/************************************************************* +Returns the page of a persistent cursor. */ +UNIV_INLINE +page_t* +btr_pcur_get_page( +/*==============*/ + /* out: pointer to the page */ + btr_pcur_t* cursor);/* in: persistent cursor */ +/************************************************************* +Returns the buffer block of a persistent cursor. */ +UNIV_INLINE +buf_block_t* +btr_pcur_get_block( +/*===============*/ + /* out: pointer to the block */ + btr_pcur_t* cursor);/* in: persistent cursor */ +/************************************************************* +Returns the record of a persistent cursor. */ +UNIV_INLINE +rec_t* +btr_pcur_get_rec( +/*=============*/ + /* out: pointer to the record */ + btr_pcur_t* cursor);/* in: persistent cursor */ +/************************************************************* +Checks if the persistent cursor is on a user record. */ +UNIV_INLINE +ibool +btr_pcur_is_on_user_rec( +/*====================*/ + const btr_pcur_t* cursor);/* in: persistent cursor */ +/************************************************************* +Checks if the persistent cursor is after the last user record on +a page. */ +UNIV_INLINE +ibool +btr_pcur_is_after_last_on_page( +/*===========================*/ + const btr_pcur_t* cursor);/* in: persistent cursor */ +/************************************************************* +Checks if the persistent cursor is before the first user record on +a page. */ +UNIV_INLINE +ibool +btr_pcur_is_before_first_on_page( +/*=============================*/ + const btr_pcur_t* cursor);/* in: persistent cursor */ +/************************************************************* +Checks if the persistent cursor is before the first user record in +the index tree. */ +UNIV_INLINE +ibool +btr_pcur_is_before_first_in_tree( +/*=============================*/ + btr_pcur_t* cursor, /* in: persistent cursor */ + mtr_t* mtr); /* in: mtr */ +/************************************************************* +Checks if the persistent cursor is after the last user record in +the index tree. */ +UNIV_INLINE +ibool +btr_pcur_is_after_last_in_tree( +/*===========================*/ + btr_pcur_t* cursor, /* in: persistent cursor */ + mtr_t* mtr); /* in: mtr */ +/************************************************************* +Moves the persistent cursor to the next record on the same page. */ +UNIV_INLINE +void +btr_pcur_move_to_next_on_page( +/*==========================*/ + btr_pcur_t* cursor);/* in/out: persistent cursor */ +/************************************************************* +Moves the persistent cursor to the previous record on the same page. */ +UNIV_INLINE +void +btr_pcur_move_to_prev_on_page( +/*==========================*/ + btr_pcur_t* cursor);/* in/out: persistent cursor */ + + +/* The persistent B-tree cursor structure. This is used mainly for SQL +selects, updates, and deletes. */ + +struct btr_pcur_struct{ + btr_cur_t btr_cur; /* a B-tree cursor */ + ulint latch_mode; /* see TODO note below! + BTR_SEARCH_LEAF, BTR_MODIFY_LEAF, + BTR_MODIFY_TREE, or BTR_NO_LATCHES, + depending on the latching state of + the page and tree where the cursor is + positioned; the last value means that + the cursor is not currently positioned: + we say then that the cursor is + detached; it can be restored to + attached if the old position was + stored in old_rec */ + ulint old_stored; /* BTR_PCUR_OLD_STORED + or BTR_PCUR_OLD_NOT_STORED */ + rec_t* old_rec; /* if cursor position is stored, + contains an initial segment of the + latest record cursor was positioned + either on, before, or after */ + ulint old_n_fields; /* number of fields in old_rec */ + ulint rel_pos; /* BTR_PCUR_ON, BTR_PCUR_BEFORE, or + BTR_PCUR_AFTER, depending on whether + cursor was on, before, or after the + old_rec record */ + buf_block_t* block_when_stored;/* buffer block when the position was + stored */ + ib_uint64_t modify_clock; /* the modify clock value of the + buffer block when the cursor position + was stored */ + ulint pos_state; /* see TODO note below! + BTR_PCUR_IS_POSITIONED, + BTR_PCUR_WAS_POSITIONED, + BTR_PCUR_NOT_POSITIONED */ + ulint search_mode; /* PAGE_CUR_G, ... */ + trx_t* trx_if_known; /* the transaction, if we know it; + otherwise this field is not defined; + can ONLY BE USED in error prints in + fatal assertion failures! */ + /*-----------------------------*/ + /* NOTE that the following fields may possess dynamically allocated + memory which should be freed if not needed anymore! */ + + mtr_t* mtr; /* NULL, or this field may contain + a mini-transaction which holds the + latch on the cursor page */ + byte* old_rec_buf; /* NULL, or a dynamically allocated + buffer for old_rec */ + ulint buf_size; /* old_rec_buf size if old_rec_buf + is not NULL */ +}; + +#define BTR_PCUR_IS_POSITIONED 1997660512 /* TODO: currently, the state + can be BTR_PCUR_IS_POSITIONED, + though it really should be + BTR_PCUR_WAS_POSITIONED, + because we have no obligation + to commit the cursor with + mtr; similarly latch_mode may + be out of date. This can + lead to problems if btr_pcur + is not used the right way; + all current code should be + ok. */ +#define BTR_PCUR_WAS_POSITIONED 1187549791 +#define BTR_PCUR_NOT_POSITIONED 1328997689 + +#define BTR_PCUR_OLD_STORED 908467085 +#define BTR_PCUR_OLD_NOT_STORED 122766467 + +#ifndef UNIV_NONINL +#include "btr0pcur.ic" +#endif + +#endif === added file 'storage/xtradb/include/btr0pcur.ic' --- a/storage/xtradb/include/btr0pcur.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/btr0pcur.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,656 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +The index tree persistent cursor + +Created 2/23/1996 Heikki Tuuri +*******************************************************/ + + +/************************************************************* +Gets the rel_pos field for a cursor whose position has been stored. */ +UNIV_INLINE +ulint +btr_pcur_get_rel_pos( +/*=================*/ + /* out: BTR_PCUR_ON, ... */ + const btr_pcur_t* cursor) /* in: persistent cursor */ +{ + ut_ad(cursor); + ut_ad(cursor->old_rec); + ut_ad(cursor->old_stored == BTR_PCUR_OLD_STORED); + ut_ad(cursor->pos_state == BTR_PCUR_WAS_POSITIONED + || cursor->pos_state == BTR_PCUR_IS_POSITIONED); + + return(cursor->rel_pos); +} + +/************************************************************* +Sets the mtr field for a pcur. */ +UNIV_INLINE +void +btr_pcur_set_mtr( +/*=============*/ + btr_pcur_t* cursor, /* in: persistent cursor */ + mtr_t* mtr) /* in, own: mtr */ +{ + ut_ad(cursor); + + cursor->mtr = mtr; +} + +/************************************************************* +Gets the mtr field for a pcur. */ +UNIV_INLINE +mtr_t* +btr_pcur_get_mtr( +/*=============*/ + /* out: mtr */ + btr_pcur_t* cursor) /* in: persistent cursor */ +{ + ut_ad(cursor); + + return(cursor->mtr); +} + +#ifdef UNIV_DEBUG +/************************************************************* +Returns the btr cursor component of a persistent cursor. */ +UNIV_INLINE +btr_cur_t* +btr_pcur_get_btr_cur( +/*=================*/ + /* out: pointer to + btr cursor component */ + const btr_pcur_t* cursor) /* in: persistent cursor */ +{ + const btr_cur_t* btr_cur = &cursor->btr_cur; + return((btr_cur_t*) btr_cur); +} + +/************************************************************* +Returns the page cursor component of a persistent cursor. */ +UNIV_INLINE +page_cur_t* +btr_pcur_get_page_cur( +/*==================*/ + /* out: pointer to page cursor + component */ + const btr_pcur_t* cursor) /* in: persistent cursor */ +{ + return(btr_cur_get_page_cur(btr_pcur_get_btr_cur(cursor))); +} +#endif /* UNIV_DEBUG */ +/************************************************************* +Returns the page of a persistent cursor. */ +UNIV_INLINE +page_t* +btr_pcur_get_page( +/*==============*/ + /* out: pointer to the page */ + btr_pcur_t* cursor) /* in: persistent cursor */ +{ + ut_ad(cursor->pos_state == BTR_PCUR_IS_POSITIONED); + + return(btr_cur_get_page(btr_pcur_get_btr_cur(cursor))); +} + +/************************************************************* +Returns the buffer block of a persistent cursor. */ +UNIV_INLINE +buf_block_t* +btr_pcur_get_block( +/*===============*/ + /* out: pointer to the block */ + btr_pcur_t* cursor) /* in: persistent cursor */ +{ + ut_ad(cursor->pos_state == BTR_PCUR_IS_POSITIONED); + + return(btr_cur_get_block(btr_pcur_get_btr_cur(cursor))); +} + +/************************************************************* +Returns the record of a persistent cursor. */ +UNIV_INLINE +rec_t* +btr_pcur_get_rec( +/*=============*/ + /* out: pointer to the record */ + btr_pcur_t* cursor) /* in: persistent cursor */ +{ + ut_ad(cursor->pos_state == BTR_PCUR_IS_POSITIONED); + ut_ad(cursor->latch_mode != BTR_NO_LATCHES); + + return(btr_cur_get_rec(btr_pcur_get_btr_cur(cursor))); +} + +/****************************************************************** +Gets the up_match value for a pcur after a search. */ +UNIV_INLINE +ulint +btr_pcur_get_up_match( +/*==================*/ + /* out: number of matched fields at the cursor + or to the right if search mode was PAGE_CUR_GE, + otherwise undefined */ + btr_pcur_t* cursor) /* in: memory buffer for persistent cursor */ +{ + btr_cur_t* btr_cursor; + + ut_ad((cursor->pos_state == BTR_PCUR_WAS_POSITIONED) + || (cursor->pos_state == BTR_PCUR_IS_POSITIONED)); + + btr_cursor = btr_pcur_get_btr_cur(cursor); + + ut_ad(btr_cursor->up_match != ULINT_UNDEFINED); + + return(btr_cursor->up_match); +} + +/****************************************************************** +Gets the low_match value for a pcur after a search. */ +UNIV_INLINE +ulint +btr_pcur_get_low_match( +/*===================*/ + /* out: number of matched fields at the cursor + or to the right if search mode was PAGE_CUR_LE, + otherwise undefined */ + btr_pcur_t* cursor) /* in: memory buffer for persistent cursor */ +{ + btr_cur_t* btr_cursor; + + ut_ad((cursor->pos_state == BTR_PCUR_WAS_POSITIONED) + || (cursor->pos_state == BTR_PCUR_IS_POSITIONED)); + + btr_cursor = btr_pcur_get_btr_cur(cursor); + ut_ad(btr_cursor->low_match != ULINT_UNDEFINED); + + return(btr_cursor->low_match); +} + +/************************************************************* +Checks if the persistent cursor is after the last user record on +a page. */ +UNIV_INLINE +ibool +btr_pcur_is_after_last_on_page( +/*===========================*/ + const btr_pcur_t* cursor) /* in: persistent cursor */ +{ + ut_ad(cursor->pos_state == BTR_PCUR_IS_POSITIONED); + ut_ad(cursor->latch_mode != BTR_NO_LATCHES); + + return(page_cur_is_after_last(btr_pcur_get_page_cur(cursor))); +} + +/************************************************************* +Checks if the persistent cursor is before the first user record on +a page. */ +UNIV_INLINE +ibool +btr_pcur_is_before_first_on_page( +/*=============================*/ + const btr_pcur_t* cursor) /* in: persistent cursor */ +{ + ut_ad(cursor->pos_state == BTR_PCUR_IS_POSITIONED); + ut_ad(cursor->latch_mode != BTR_NO_LATCHES); + + return(page_cur_is_before_first(btr_pcur_get_page_cur(cursor))); +} + +/************************************************************* +Checks if the persistent cursor is on a user record. */ +UNIV_INLINE +ibool +btr_pcur_is_on_user_rec( +/*====================*/ + const btr_pcur_t* cursor) /* in: persistent cursor */ +{ + ut_ad(cursor->pos_state == BTR_PCUR_IS_POSITIONED); + ut_ad(cursor->latch_mode != BTR_NO_LATCHES); + + if (btr_pcur_is_before_first_on_page(cursor) + || btr_pcur_is_after_last_on_page(cursor)) { + + return(FALSE); + } + + return(TRUE); +} + +/************************************************************* +Checks if the persistent cursor is before the first user record in +the index tree. */ +UNIV_INLINE +ibool +btr_pcur_is_before_first_in_tree( +/*=============================*/ + btr_pcur_t* cursor, /* in: persistent cursor */ + mtr_t* mtr) /* in: mtr */ +{ + ut_ad(cursor->pos_state == BTR_PCUR_IS_POSITIONED); + ut_ad(cursor->latch_mode != BTR_NO_LATCHES); + + if (btr_page_get_prev(btr_pcur_get_page(cursor), mtr) != FIL_NULL) { + + return(FALSE); + } + + return(page_cur_is_before_first(btr_pcur_get_page_cur(cursor))); +} + +/************************************************************* +Checks if the persistent cursor is after the last user record in +the index tree. */ +UNIV_INLINE +ibool +btr_pcur_is_after_last_in_tree( +/*===========================*/ + btr_pcur_t* cursor, /* in: persistent cursor */ + mtr_t* mtr) /* in: mtr */ +{ + ut_ad(cursor->pos_state == BTR_PCUR_IS_POSITIONED); + ut_ad(cursor->latch_mode != BTR_NO_LATCHES); + + if (btr_page_get_next(btr_pcur_get_page(cursor), mtr) != FIL_NULL) { + + return(FALSE); + } + + return(page_cur_is_after_last(btr_pcur_get_page_cur(cursor))); +} + +/************************************************************* +Moves the persistent cursor to the next record on the same page. */ +UNIV_INLINE +void +btr_pcur_move_to_next_on_page( +/*==========================*/ + btr_pcur_t* cursor) /* in/out: persistent cursor */ +{ + ut_ad(cursor->pos_state == BTR_PCUR_IS_POSITIONED); + ut_ad(cursor->latch_mode != BTR_NO_LATCHES); + + page_cur_move_to_next(btr_pcur_get_page_cur(cursor)); + + cursor->old_stored = BTR_PCUR_OLD_NOT_STORED; +} + +/************************************************************* +Moves the persistent cursor to the previous record on the same page. */ +UNIV_INLINE +void +btr_pcur_move_to_prev_on_page( +/*==========================*/ + btr_pcur_t* cursor) /* in/out: persistent cursor */ +{ + ut_ad(cursor->pos_state == BTR_PCUR_IS_POSITIONED); + ut_ad(cursor->latch_mode != BTR_NO_LATCHES); + + page_cur_move_to_prev(btr_pcur_get_page_cur(cursor)); + + cursor->old_stored = BTR_PCUR_OLD_NOT_STORED; +} + +/************************************************************* +Moves the persistent cursor to the last record on the same page. */ +UNIV_INLINE +void +btr_pcur_move_to_last_on_page( +/*==========================*/ + btr_pcur_t* cursor, /* in: persistent cursor */ + mtr_t* mtr) /* in: mtr */ +{ + UT_NOT_USED(mtr); + ut_ad(cursor->latch_mode != BTR_NO_LATCHES); + + page_cur_set_after_last(btr_pcur_get_block(cursor), + btr_pcur_get_page_cur(cursor)); + + cursor->old_stored = BTR_PCUR_OLD_NOT_STORED; +} + +/************************************************************* +Moves the persistent cursor to the next user record in the tree. If no user +records are left, the cursor ends up 'after last in tree'. */ +UNIV_INLINE +ibool +btr_pcur_move_to_next_user_rec( +/*===========================*/ + /* out: TRUE if the cursor moved forward, + ending on a user record */ + btr_pcur_t* cursor, /* in: persistent cursor; NOTE that the + function may release the page latch */ + mtr_t* mtr) /* in: mtr */ +{ + ut_ad(cursor->pos_state == BTR_PCUR_IS_POSITIONED); + ut_ad(cursor->latch_mode != BTR_NO_LATCHES); + cursor->old_stored = BTR_PCUR_OLD_NOT_STORED; +loop: + if (btr_pcur_is_after_last_on_page(cursor)) { + + if (btr_pcur_is_after_last_in_tree(cursor, mtr)) { + + return(FALSE); + } + + btr_pcur_move_to_next_page(cursor, mtr); + } else { + btr_pcur_move_to_next_on_page(cursor); + } + + if (btr_pcur_is_on_user_rec(cursor)) { + + return(TRUE); + } + + goto loop; +} + +/************************************************************* +Moves the persistent cursor to the next record in the tree. If no records are +left, the cursor stays 'after last in tree'. */ +UNIV_INLINE +ibool +btr_pcur_move_to_next( +/*==================*/ + /* out: TRUE if the cursor was not after last + in tree */ + btr_pcur_t* cursor, /* in: persistent cursor; NOTE that the + function may release the page latch */ + mtr_t* mtr) /* in: mtr */ +{ + ut_ad(cursor->pos_state == BTR_PCUR_IS_POSITIONED); + ut_ad(cursor->latch_mode != BTR_NO_LATCHES); + + cursor->old_stored = BTR_PCUR_OLD_NOT_STORED; + + if (btr_pcur_is_after_last_on_page(cursor)) { + + if (btr_pcur_is_after_last_in_tree(cursor, mtr)) { + + return(FALSE); + } + + btr_pcur_move_to_next_page(cursor, mtr); + + return(TRUE); + } + + btr_pcur_move_to_next_on_page(cursor); + + return(TRUE); +} + +/****************************************************************** +Commits the pcur mtr and sets the pcur latch mode to BTR_NO_LATCHES, +that is, the cursor becomes detached. If there have been modifications +to the page where pcur is positioned, this can be used instead of +btr_pcur_release_leaf. Function btr_pcur_store_position should be used +before calling this, if restoration of cursor is wanted later. */ +UNIV_INLINE +void +btr_pcur_commit( +/*============*/ + btr_pcur_t* pcur) /* in: persistent cursor */ +{ + ut_a(pcur->pos_state == BTR_PCUR_IS_POSITIONED); + + pcur->latch_mode = BTR_NO_LATCHES; + + mtr_commit(pcur->mtr); + + pcur->pos_state = BTR_PCUR_WAS_POSITIONED; +} + +/****************************************************************** +Differs from btr_pcur_commit in that we can specify the mtr to commit. */ +UNIV_INLINE +void +btr_pcur_commit_specify_mtr( +/*========================*/ + btr_pcur_t* pcur, /* in: persistent cursor */ + mtr_t* mtr) /* in: mtr to commit */ +{ + ut_a(pcur->pos_state == BTR_PCUR_IS_POSITIONED); + + pcur->latch_mode = BTR_NO_LATCHES; + + mtr_commit(mtr); + + pcur->pos_state = BTR_PCUR_WAS_POSITIONED; +} + +/****************************************************************** +Sets the pcur latch mode to BTR_NO_LATCHES. */ +UNIV_INLINE +void +btr_pcur_detach( +/*============*/ + btr_pcur_t* pcur) /* in: persistent cursor */ +{ + ut_a(pcur->pos_state == BTR_PCUR_IS_POSITIONED); + + pcur->latch_mode = BTR_NO_LATCHES; + + pcur->pos_state = BTR_PCUR_WAS_POSITIONED; +} + +/****************************************************************** +Tests if a cursor is detached: that is the latch mode is BTR_NO_LATCHES. */ +UNIV_INLINE +ibool +btr_pcur_is_detached( +/*=================*/ + /* out: TRUE if detached */ + btr_pcur_t* pcur) /* in: persistent cursor */ +{ + if (pcur->latch_mode == BTR_NO_LATCHES) { + + return(TRUE); + } + + return(FALSE); +} + +/****************************************************************** +Sets the old_rec_buf field to NULL. */ +UNIV_INLINE +void +btr_pcur_init( +/*==========*/ + btr_pcur_t* pcur) /* in: persistent cursor */ +{ + pcur->old_stored = BTR_PCUR_OLD_NOT_STORED; + pcur->old_rec_buf = NULL; + pcur->old_rec = NULL; +} + +/****************************************************************** +Initializes and opens a persistent cursor to an index tree. It should be +closed with btr_pcur_close. */ +UNIV_INLINE +void +btr_pcur_open( +/*==========*/ + dict_index_t* index, /* in: index */ + const dtuple_t* tuple, /* in: tuple on which search done */ + ulint mode, /* in: PAGE_CUR_L, ...; + NOTE that if the search is made using a unique + prefix of a record, mode should be + PAGE_CUR_LE, not PAGE_CUR_GE, as the latter + may end up on the previous page from the + record! */ + ulint latch_mode,/* in: BTR_SEARCH_LEAF, ... */ + btr_pcur_t* cursor, /* in: memory buffer for persistent cursor */ + mtr_t* mtr) /* in: mtr */ +{ + btr_cur_t* btr_cursor; + + /* Initialize the cursor */ + + btr_pcur_init(cursor); + + cursor->latch_mode = latch_mode; + cursor->search_mode = mode; + + /* Search with the tree cursor */ + + btr_cursor = btr_pcur_get_btr_cur(cursor); + + btr_cur_search_to_nth_level(index, 0, tuple, mode, latch_mode, + btr_cursor, 0, mtr); + cursor->pos_state = BTR_PCUR_IS_POSITIONED; + + cursor->trx_if_known = NULL; +} + +/****************************************************************** +Opens an persistent cursor to an index tree without initializing the +cursor. */ +UNIV_INLINE +void +btr_pcur_open_with_no_init( +/*=======================*/ + dict_index_t* index, /* in: index */ + const dtuple_t* tuple, /* in: tuple on which search done */ + ulint mode, /* in: PAGE_CUR_L, ...; + NOTE that if the search is made using a unique + prefix of a record, mode should be + PAGE_CUR_LE, not PAGE_CUR_GE, as the latter + may end up on the previous page of the + record! */ + ulint latch_mode,/* in: BTR_SEARCH_LEAF, ...; + NOTE that if has_search_latch != 0 then + we maybe do not acquire a latch on the cursor + page, but assume that the caller uses his + btr search latch to protect the record! */ + btr_pcur_t* cursor, /* in: memory buffer for persistent cursor */ + ulint has_search_latch,/* in: latch mode the caller + currently has on btr_search_latch: + RW_S_LATCH, or 0 */ + mtr_t* mtr) /* in: mtr */ +{ + btr_cur_t* btr_cursor; + + cursor->latch_mode = latch_mode; + cursor->search_mode = mode; + + /* Search with the tree cursor */ + + btr_cursor = btr_pcur_get_btr_cur(cursor); + + btr_cur_search_to_nth_level(index, 0, tuple, mode, latch_mode, + btr_cursor, has_search_latch, mtr); + cursor->pos_state = BTR_PCUR_IS_POSITIONED; + + cursor->old_stored = BTR_PCUR_OLD_NOT_STORED; + + cursor->trx_if_known = NULL; +} + +/********************************************************************* +Opens a persistent cursor at either end of an index. */ +UNIV_INLINE +void +btr_pcur_open_at_index_side( +/*========================*/ + ibool from_left, /* in: TRUE if open to the low end, + FALSE if to the high end */ + dict_index_t* index, /* in: index */ + ulint latch_mode, /* in: latch mode */ + btr_pcur_t* pcur, /* in: cursor */ + ibool do_init, /* in: TRUE if should be initialized */ + mtr_t* mtr) /* in: mtr */ +{ + pcur->latch_mode = latch_mode; + + if (from_left) { + pcur->search_mode = PAGE_CUR_G; + } else { + pcur->search_mode = PAGE_CUR_L; + } + + if (do_init) { + btr_pcur_init(pcur); + } + + btr_cur_open_at_index_side(from_left, index, latch_mode, + btr_pcur_get_btr_cur(pcur), mtr); + pcur->pos_state = BTR_PCUR_IS_POSITIONED; + + pcur->old_stored = BTR_PCUR_OLD_NOT_STORED; + + pcur->trx_if_known = NULL; +} + +/************************************************************************** +Positions a cursor at a randomly chosen position within a B-tree. */ +UNIV_INLINE +void +btr_pcur_open_at_rnd_pos( +/*=====================*/ + dict_index_t* index, /* in: index */ + ulint latch_mode, /* in: BTR_SEARCH_LEAF, ... */ + btr_pcur_t* cursor, /* in/out: B-tree pcur */ + mtr_t* mtr) /* in: mtr */ +{ + /* Initialize the cursor */ + + cursor->latch_mode = latch_mode; + cursor->search_mode = PAGE_CUR_G; + + btr_pcur_init(cursor); + + btr_cur_open_at_rnd_pos(index, latch_mode, + btr_pcur_get_btr_cur(cursor), mtr); + cursor->pos_state = BTR_PCUR_IS_POSITIONED; + cursor->old_stored = BTR_PCUR_OLD_NOT_STORED; + + cursor->trx_if_known = NULL; +} + +/****************************************************************** +Frees the possible memory heap of a persistent cursor and sets the latch +mode of the persistent cursor to BTR_NO_LATCHES. */ +UNIV_INLINE +void +btr_pcur_close( +/*===========*/ + btr_pcur_t* cursor) /* in: persistent cursor */ +{ + if (cursor->old_rec_buf != NULL) { + + mem_free(cursor->old_rec_buf); + + cursor->old_rec = NULL; + cursor->old_rec_buf = NULL; + } + + cursor->btr_cur.page_cur.rec = NULL; + cursor->btr_cur.page_cur.block = NULL; + cursor->old_rec = NULL; + cursor->old_stored = BTR_PCUR_OLD_NOT_STORED; + + cursor->latch_mode = BTR_NO_LATCHES; + cursor->pos_state = BTR_PCUR_NOT_POSITIONED; + + cursor->trx_if_known = NULL; +} === added file 'storage/xtradb/include/btr0sea.h' --- a/storage/xtradb/include/btr0sea.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/btr0sea.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,298 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/************************************************************************ +The index tree adaptive search + +Created 2/17/1996 Heikki Tuuri +*************************************************************************/ + +#ifndef btr0sea_h +#define btr0sea_h + +#include "univ.i" + +#include "rem0rec.h" +#include "dict0dict.h" +#include "btr0types.h" +#include "mtr0mtr.h" +#include "ha0ha.h" + +/********************************************************************* +Creates and initializes the adaptive search system at a database start. */ +UNIV_INTERN +void +btr_search_sys_create( +/*==================*/ + ulint hash_size); /* in: hash index hash table size */ + +/************************************************************************ +Disable the adaptive hash search system and empty the index. */ +UNIV_INTERN +void +btr_search_disable(void); +/*====================*/ +/************************************************************************ +Enable the adaptive hash search system. */ +UNIV_INTERN +void +btr_search_enable(void); +/*====================*/ + +/************************************************************************ +Returns search info for an index. */ +UNIV_INLINE +btr_search_t* +btr_search_get_info( +/*================*/ + /* out: search info; search mutex reserved */ + dict_index_t* index); /* in: index */ +/********************************************************************* +Creates and initializes a search info struct. */ +UNIV_INTERN +btr_search_t* +btr_search_info_create( +/*===================*/ + /* out, own: search info struct */ + mem_heap_t* heap); /* in: heap where created */ +/********************************************************************* +Returns the value of ref_count. The value is protected by +btr_search_latch. */ +UNIV_INTERN +ulint +btr_search_info_get_ref_count( +/*==========================*/ + /* out: ref_count value. */ + btr_search_t* info); /* in: search info. */ +/************************************************************************* +Updates the search info. */ +UNIV_INLINE +void +btr_search_info_update( +/*===================*/ + dict_index_t* index, /* in: index of the cursor */ + btr_cur_t* cursor);/* in: cursor which was just positioned */ +/********************************************************************** +Tries to guess the right search position based on the hash search info +of the index. Note that if mode is PAGE_CUR_LE, which is used in inserts, +and the function returns TRUE, then cursor->up_match and cursor->low_match +both have sensible values. */ +UNIV_INTERN +ibool +btr_search_guess_on_hash( +/*=====================*/ + /* out: TRUE if succeeded */ + dict_index_t* index, /* in: index */ + btr_search_t* info, /* in: index search info */ + const dtuple_t* tuple, /* in: logical record */ + ulint mode, /* in: PAGE_CUR_L, ... */ + ulint latch_mode, /* in: BTR_SEARCH_LEAF, ... */ + btr_cur_t* cursor, /* out: tree cursor */ + ulint has_search_latch,/* in: latch mode the caller + currently has on btr_search_latch: + RW_S_LATCH, RW_X_LATCH, or 0 */ + mtr_t* mtr); /* in: mtr */ +/************************************************************************ +Moves or deletes hash entries for moved records. If new_page is already hashed, +then the hash index for page, if any, is dropped. If new_page is not hashed, +and page is hashed, then a new hash index is built to new_page with the same +parameters as page (this often happens when a page is split). */ +UNIV_INTERN +void +btr_search_move_or_delete_hash_entries( +/*===================================*/ + buf_block_t* new_block, /* in: records are copied + to this page */ + buf_block_t* block, /* in: index page from which + records were copied, and the + copied records will be deleted + from this page */ + dict_index_t* index); /* in: record descriptor */ +/************************************************************************ +Drops a page hash index. */ +UNIV_INTERN +void +btr_search_drop_page_hash_index( +/*============================*/ + buf_block_t* block); /* in: block containing index page, + s- or x-latched, or an index page + for which we know that + block->buf_fix_count == 0 */ +/************************************************************************ +Drops a page hash index when a page is freed from a fseg to the file system. +Drops possible hash index if the page happens to be in the buffer pool. */ +UNIV_INTERN +void +btr_search_drop_page_hash_when_freed( +/*=================================*/ + ulint space, /* in: space id */ + ulint zip_size, /* in: compressed page size in bytes + or 0 for uncompressed pages */ + ulint page_no); /* in: page number */ +/************************************************************************ +Updates the page hash index when a single record is inserted on a page. */ +UNIV_INTERN +void +btr_search_update_hash_node_on_insert( +/*==================================*/ + btr_cur_t* cursor);/* in: cursor which was positioned to the + place to insert using btr_cur_search_..., + and the new record has been inserted next + to the cursor */ +/************************************************************************ +Updates the page hash index when a single record is inserted on a page. */ +UNIV_INTERN +void +btr_search_update_hash_on_insert( +/*=============================*/ + btr_cur_t* cursor);/* in: cursor which was positioned to the + place to insert using btr_cur_search_..., + and the new record has been inserted next + to the cursor */ +/************************************************************************ +Updates the page hash index when a single record is deleted from a page. */ +UNIV_INTERN +void +btr_search_update_hash_on_delete( +/*=============================*/ + btr_cur_t* cursor);/* in: cursor which was positioned on the + record to delete using btr_cur_search_..., + the record is not yet deleted */ +/************************************************************************ +Validates the search system. */ +UNIV_INTERN +ibool +btr_search_validate(void); +/*======================*/ + /* out: TRUE if ok */ + +/* Flag: has the search system been enabled? +Protected by btr_search_latch and btr_search_enabled_mutex. */ +extern char btr_search_enabled; + +/* The search info struct in an index */ + +struct btr_search_struct{ + ulint ref_count; /* Number of blocks in this index tree + that have search index built + i.e. block->index points to this index. + Protected by btr_search_latch except + when during initialization in + btr_search_info_create(). */ + + /* The following fields are not protected by any latch. + Unfortunately, this means that they must be aligned to + the machine word, i.e., they cannot be turned into bit-fields. */ + buf_block_t* root_guess;/* the root page frame when it was last time + fetched, or NULL */ + ulint hash_analysis; /* when this exceeds BTR_SEARCH_HASH_ANALYSIS, + the hash analysis starts; this is reset if no + success noticed */ + ibool last_hash_succ; /* TRUE if the last search would have + succeeded, or did succeed, using the hash + index; NOTE that the value here is not exact: + it is not calculated for every search, and the + calculation itself is not always accurate! */ + ulint n_hash_potential; + /* number of consecutive searches + which would have succeeded, or did succeed, + using the hash index; + the range is 0 .. BTR_SEARCH_BUILD_LIMIT + 5 */ + /*----------------------*/ + ulint n_fields; /* recommended prefix length for hash search: + number of full fields */ + ulint n_bytes; /* recommended prefix: number of bytes in + an incomplete field; + see also BTR_PAGE_MAX_REC_SIZE */ + ibool left_side; /* TRUE or FALSE, depending on whether + the leftmost record of several records with + the same prefix should be indexed in the + hash index */ + /*----------------------*/ +#ifdef UNIV_SEARCH_PERF_STAT + ulint n_hash_succ; /* number of successful hash searches thus + far */ + ulint n_hash_fail; /* number of failed hash searches */ + ulint n_patt_succ; /* number of successful pattern searches thus + far */ + ulint n_searches; /* number of searches */ +#endif /* UNIV_SEARCH_PERF_STAT */ +#ifdef UNIV_DEBUG + ulint magic_n; /* magic number */ +# define BTR_SEARCH_MAGIC_N 1112765 +#endif /* UNIV_DEBUG */ +}; + +/* The hash index system */ + +typedef struct btr_search_sys_struct btr_search_sys_t; + +struct btr_search_sys_struct{ + hash_table_t* hash_index; +}; + +extern btr_search_sys_t* btr_search_sys; + +/* The latch protecting the adaptive search system: this latch protects the +(1) hash index; +(2) columns of a record to which we have a pointer in the hash index; + +but does NOT protect: + +(3) next record offset field in a record; +(4) next or previous records on the same page. + +Bear in mind (3) and (4) when using the hash index. +*/ + +extern rw_lock_t* btr_search_latch_temp; + +#define btr_search_latch (*btr_search_latch_temp) + +#ifdef UNIV_SEARCH_PERF_STAT +extern ulint btr_search_n_succ; +extern ulint btr_search_n_hash_fail; +#endif /* UNIV_SEARCH_PERF_STAT */ + +/* After change in n_fields or n_bytes in info, this many rounds are waited +before starting the hash analysis again: this is to save CPU time when there +is no hope in building a hash index. */ + +#define BTR_SEARCH_HASH_ANALYSIS 17 + +/* Limit of consecutive searches for trying a search shortcut on the search +pattern */ + +#define BTR_SEARCH_ON_PATTERN_LIMIT 3 + +/* Limit of consecutive searches for trying a search shortcut using the hash +index */ + +#define BTR_SEARCH_ON_HASH_LIMIT 3 + +/* We do this many searches before trying to keep the search latch over calls +from MySQL. If we notice someone waiting for the latch, we again set this +much timeout. This is to reduce contention. */ + +#define BTR_SEA_TIMEOUT 10000 + +#ifndef UNIV_NONINL +#include "btr0sea.ic" +#endif + +#endif === added file 'storage/xtradb/include/btr0sea.ic' --- a/storage/xtradb/include/btr0sea.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/btr0sea.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,83 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/************************************************************************ +The index tree adaptive search + +Created 2/17/1996 Heikki Tuuri +*************************************************************************/ + +#include "dict0mem.h" +#include "btr0cur.h" +#include "buf0buf.h" + +/************************************************************************* +Updates the search info. */ +UNIV_INTERN +void +btr_search_info_update_slow( +/*========================*/ + btr_search_t* info, /* in/out: search info */ + btr_cur_t* cursor);/* in: cursor which was just positioned */ + +/************************************************************************ +Returns search info for an index. */ +UNIV_INLINE +btr_search_t* +btr_search_get_info( +/*================*/ + /* out: search info; search mutex reserved */ + dict_index_t* index) /* in: index */ +{ + ut_ad(index); + + return(index->search_info); +} + +/************************************************************************* +Updates the search info. */ +UNIV_INLINE +void +btr_search_info_update( +/*===================*/ + dict_index_t* index, /* in: index of the cursor */ + btr_cur_t* cursor) /* in: cursor which was just positioned */ +{ + btr_search_t* info; + +#ifdef UNIV_SYNC_DEBUG + ut_ad(!rw_lock_own(&btr_search_latch, RW_LOCK_SHARED)); + ut_ad(!rw_lock_own(&btr_search_latch, RW_LOCK_EX)); +#endif /* UNIV_SYNC_DEBUG */ + + info = btr_search_get_info(index); + + info->hash_analysis++; + + if (info->hash_analysis < BTR_SEARCH_HASH_ANALYSIS) { + + /* Do nothing */ + + return; + + } + + ut_ad(cursor->flag != BTR_CUR_HASH); + + btr_search_info_update_slow(info, cursor); +} === added file 'storage/xtradb/include/btr0types.h' --- a/storage/xtradb/include/btr0types.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/btr0types.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,47 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/************************************************************************ +The index tree general types + +Created 2/17/1996 Heikki Tuuri +*************************************************************************/ + +#ifndef btr0types_h +#define btr0types_h + +#include "univ.i" + +#include "rem0types.h" +#include "page0types.h" + +typedef struct btr_pcur_struct btr_pcur_t; +typedef struct btr_cur_struct btr_cur_t; +typedef struct btr_search_struct btr_search_t; + +/* The size of a reference to data stored on a different page. +The reference is stored at the end of the prefix of the field +in the index record. */ +#define BTR_EXTERN_FIELD_REF_SIZE 20 + +/* A BLOB field reference full of zero, for use in assertions and tests. +Initially, BLOB field references are set to zero, in +dtuple_convert_big_rec(). */ +extern const byte field_ref_zero[BTR_EXTERN_FIELD_REF_SIZE]; + +#endif === added file 'storage/xtradb/include/buf0buddy.h' --- a/storage/xtradb/include/buf0buddy.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/buf0buddy.h 2009-05-04 02:45:47 +0000 @@ -0,0 +1,89 @@ +/***************************************************************************** + +Copyright (c) 2006, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Binary buddy allocator for compressed pages + +Created December 2006 by Marko Makela +*******************************************************/ + +#ifndef buf0buddy_h +#define buf0buddy_h + +#ifdef UNIV_MATERIALIZE +# undef UNIV_INLINE +# define UNIV_INLINE +#endif + +#include "univ.i" +#include "buf0types.h" + +/************************************************************************** +Allocate a block. The thread calling this function must hold +buf_pool_mutex and must not hold buf_pool_zip_mutex or any +block->mutex. The buf_pool_mutex may only be released and reacquired +if lru != NULL. This function should only be used for allocating +compressed page frames or control blocks (buf_page_t). Allocated +control blocks must be properly initialized immediately after +buf_buddy_alloc() has returned the memory, before releasing +buf_pool_mutex. */ +UNIV_INLINE +void* +buf_buddy_alloc( +/*============*/ + /* out: allocated block, + possibly NULL if lru == NULL */ + ulint size, /* in: block size, up to UNIV_PAGE_SIZE */ + ibool* lru) /* in: pointer to a variable that will be assigned + TRUE if storage was allocated from the LRU list + and buf_pool_mutex was temporarily released, + or NULL if the LRU list should not be used */ + __attribute__((malloc)); + +/************************************************************************** +Release a block. */ +UNIV_INLINE +void +buf_buddy_free( +/*===========*/ + void* buf, /* in: block to be freed, must not be + pointed to by the buffer pool */ + ulint size) /* in: block size, up to UNIV_PAGE_SIZE */ + __attribute__((nonnull)); + +/** Statistics of buddy blocks of a given size. */ +struct buf_buddy_stat_struct { + /** Number of blocks allocated from the buddy system. */ + ulint used; + /** Number of blocks relocated by the buddy system. */ + ib_uint64_t relocated; + /** Total duration of block relocations, in microseconds. */ + ib_uint64_t relocated_usec; +}; + +typedef struct buf_buddy_stat_struct buf_buddy_stat_t; + +/** Statistics of the buddy system, indexed by block size. +Protected by buf_pool_mutex. */ +extern buf_buddy_stat_t buf_buddy_stat[BUF_BUDDY_SIZES + 1]; + +#ifndef UNIV_NONINL +# include "buf0buddy.ic" +#endif + +#endif /* buf0buddy_h */ === added file 'storage/xtradb/include/buf0buddy.ic' --- a/storage/xtradb/include/buf0buddy.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/buf0buddy.ic 2009-05-04 02:45:47 +0000 @@ -0,0 +1,129 @@ +/***************************************************************************** + +Copyright (c) 2006, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Binary buddy allocator for compressed pages + +Created December 2006 by Marko Makela +*******************************************************/ + +#ifdef UNIV_MATERIALIZE +# undef UNIV_INLINE +# define UNIV_INLINE +#endif + +#include "buf0buf.h" +#include "buf0buddy.h" +#include "ut0ut.h" +#include "sync0sync.h" + +/************************************************************************** +Allocate a block. The thread calling this function must hold +buf_pool_mutex and must not hold buf_pool_zip_mutex or any block->mutex. +The buf_pool_mutex may only be released and reacquired if lru != NULL. */ +UNIV_INTERN +void* +buf_buddy_alloc_low( +/*================*/ + /* out: allocated block, + possibly NULL if lru==NULL */ + ulint i, /* in: index of buf_pool->zip_free[], + or BUF_BUDDY_SIZES */ + ibool* lru) /* in: pointer to a variable that will be assigned + TRUE if storage was allocated from the LRU list + and buf_pool_mutex was temporarily released, + or NULL if the LRU list should not be used */ + __attribute__((malloc)); + +/************************************************************************** +Deallocate a block. */ +UNIV_INTERN +void +buf_buddy_free_low( +/*===============*/ + void* buf, /* in: block to be freed, must not be + pointed to by the buffer pool */ + ulint i) /* in: index of buf_pool->zip_free[], + or BUF_BUDDY_SIZES */ + __attribute__((nonnull)); + +/************************************************************************** +Get the index of buf_pool->zip_free[] for a given block size. */ +UNIV_INLINE +ulint +buf_buddy_get_slot( +/*===============*/ + /* out: index of buf_pool->zip_free[], + or BUF_BUDDY_SIZES */ + ulint size) /* in: block size */ +{ + ulint i; + ulint s; + + for (i = 0, s = BUF_BUDDY_LOW; s < size; i++, s <<= 1) { + } + + ut_ad(i <= BUF_BUDDY_SIZES); + return(i); +} + +/************************************************************************** +Allocate a block. The thread calling this function must hold +buf_pool_mutex and must not hold buf_pool_zip_mutex or any +block->mutex. The buf_pool_mutex may only be released and reacquired +if lru != NULL. This function should only be used for allocating +compressed page frames or control blocks (buf_page_t). Allocated +control blocks must be properly initialized immediately after +buf_buddy_alloc() has returned the memory, before releasing +buf_pool_mutex. */ +UNIV_INLINE +void* +buf_buddy_alloc( +/*============*/ + /* out: allocated block, + possibly NULL if lru == NULL */ + ulint size, /* in: block size, up to UNIV_PAGE_SIZE */ + ibool* lru) /* in: pointer to a variable that will be assigned + TRUE if storage was allocated from the LRU list + and buf_pool_mutex was temporarily released, + or NULL if the LRU list should not be used */ +{ + ut_ad(buf_pool_mutex_own()); + + return(buf_buddy_alloc_low(buf_buddy_get_slot(size), lru)); +} + +/************************************************************************** +Deallocate a block. */ +UNIV_INLINE +void +buf_buddy_free( +/*===========*/ + void* buf, /* in: block to be freed, must not be + pointed to by the buffer pool */ + ulint size) /* in: block size, up to UNIV_PAGE_SIZE */ +{ + ut_ad(buf_pool_mutex_own()); + + buf_buddy_free_low(buf, buf_buddy_get_slot(size)); +} + +#ifdef UNIV_MATERIALIZE +# undef UNIV_INLINE +# define UNIV_INLINE UNIV_INLINE_ORIGINAL +#endif === added file 'storage/xtradb/include/buf0buf.h' --- a/storage/xtradb/include/buf0buf.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/buf0buf.h 2009-05-04 04:32:30 +0000 @@ -0,0 +1,1411 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +The database buffer pool high-level routines + +Created 11/5/1995 Heikki Tuuri +*******************************************************/ + +#ifndef buf0buf_h +#define buf0buf_h + +#include "univ.i" +#include "fil0fil.h" +#include "mtr0types.h" +#include "buf0types.h" +#include "sync0rw.h" +#include "hash0hash.h" +#include "ut0byte.h" +#include "os0proc.h" +#include "page0types.h" + +/* Modes for buf_page_get_gen */ +#define BUF_GET 10 /* get always */ +#define BUF_GET_IF_IN_POOL 11 /* get if in pool */ +#define BUF_GET_NO_LATCH 14 /* get and bufferfix, but set no latch; + we have separated this case, because + it is error-prone programming not to + set a latch, and it should be used + with care */ +/* Modes for buf_page_get_known_nowait */ +#define BUF_MAKE_YOUNG 51 +#define BUF_KEEP_OLD 52 +/* Magic value to use instead of checksums when they are disabled */ +#define BUF_NO_CHECKSUM_MAGIC 0xDEADBEEFUL + +extern buf_pool_t* buf_pool; /* The buffer pool of the database */ +#ifdef UNIV_DEBUG +extern ibool buf_debug_prints;/* If this is set TRUE, the program + prints info whenever read or flush + occurs */ +#endif /* UNIV_DEBUG */ +extern ulint srv_buf_pool_write_requests; /* variable to count write request + issued */ + +/* States of a control block (@see buf_page_struct). +The enumeration values must be 0..7. */ +enum buf_page_state { + BUF_BLOCK_ZIP_FREE = 0, /* contains a free compressed page */ + BUF_BLOCK_ZIP_PAGE, /* contains a clean compressed page */ + BUF_BLOCK_ZIP_DIRTY, /* contains a compressed page that is + in the buf_pool->flush_list */ + + /* The constants for compressed-only pages must precede + BUF_BLOCK_NOT_USED; @see buf_block_state_valid() */ + + BUF_BLOCK_NOT_USED, /* is in the free list */ + BUF_BLOCK_READY_FOR_USE, /* when buf_LRU_get_free_block returns + a block, it is in this state */ + BUF_BLOCK_FILE_PAGE, /* contains a buffered file page */ + BUF_BLOCK_MEMORY, /* contains some main memory object */ + BUF_BLOCK_REMOVE_HASH /* hash index should be removed + before putting to the free list */ +}; + +/************************************************************************ +Creates the buffer pool. */ +UNIV_INTERN +buf_pool_t* +buf_pool_init(void); +/*===============*/ + /* out, own: buf_pool object, NULL if not + enough memory or error */ +/************************************************************************ +Frees the buffer pool at shutdown. This must not be invoked before +freeing all mutexes. */ +UNIV_INTERN +void +buf_pool_free(void); +/*===============*/ + +/************************************************************************ +Drops the adaptive hash index. To prevent a livelock, this function +is only to be called while holding btr_search_latch and while +btr_search_enabled == FALSE. */ +UNIV_INTERN +void +buf_pool_drop_hash_index(void); +/*==========================*/ + +/************************************************************************ +Relocate a buffer control block. Relocates the block on the LRU list +and in buf_pool->page_hash. Does not relocate bpage->list. +The caller must take care of relocating bpage->list. */ +UNIV_INTERN +void +buf_relocate( +/*=========*/ + buf_page_t* bpage, /* in/out: control block being relocated; + buf_page_get_state(bpage) must be + BUF_BLOCK_ZIP_DIRTY or BUF_BLOCK_ZIP_PAGE */ + buf_page_t* dpage) /* in/out: destination control block */ + __attribute__((nonnull)); +/************************************************************************ +Resizes the buffer pool. */ +UNIV_INTERN +void +buf_pool_resize(void); +/*=================*/ +/************************************************************************* +Gets the current size of buffer buf_pool in bytes. */ +UNIV_INLINE +ulint +buf_pool_get_curr_size(void); +/*========================*/ + /* out: size in bytes */ +/************************************************************************ +Gets the smallest oldest_modification lsn for any page in the pool. Returns +zero if all modified pages have been flushed to disk. */ +UNIV_INLINE +ib_uint64_t +buf_pool_get_oldest_modification(void); +/*==================================*/ + /* out: oldest modification in pool, + zero if none */ +/************************************************************************ +Allocates a buffer block. */ +UNIV_INLINE +buf_block_t* +buf_block_alloc( +/*============*/ + /* out, own: the allocated block, + in state BUF_BLOCK_MEMORY */ + ulint zip_size); /* in: compressed page size in bytes, + or 0 if uncompressed tablespace */ +/************************************************************************ +Frees a buffer block which does not contain a file page. */ +UNIV_INLINE +void +buf_block_free( +/*===========*/ + buf_block_t* block); /* in, own: block to be freed */ +/************************************************************************* +Copies contents of a buffer frame to a given buffer. */ +UNIV_INLINE +byte* +buf_frame_copy( +/*===========*/ + /* out: buf */ + byte* buf, /* in: buffer to copy to */ + const buf_frame_t* frame); /* in: buffer frame */ +/****************************************************************** +NOTE! The following macros should be used instead of buf_page_get_gen, +to improve debugging. Only values RW_S_LATCH and RW_X_LATCH are allowed +in LA! */ +#define buf_page_get(SP, ZS, OF, LA, MTR) buf_page_get_gen(\ + SP, ZS, OF, LA, NULL,\ + BUF_GET, __FILE__, __LINE__, MTR) +/****************************************************************** +Use these macros to bufferfix a page with no latching. Remember not to +read the contents of the page unless you know it is safe. Do not modify +the contents of the page! We have separated this case, because it is +error-prone programming not to set a latch, and it should be used +with care. */ +#define buf_page_get_with_no_latch(SP, ZS, OF, MTR) buf_page_get_gen(\ + SP, ZS, OF, RW_NO_LATCH, NULL,\ + BUF_GET_NO_LATCH, __FILE__, __LINE__, MTR) +/****************************************************************** +NOTE! The following macros should be used instead of +buf_page_optimistic_get_func, to improve debugging. Only values RW_S_LATCH and +RW_X_LATCH are allowed as LA! */ +#define buf_page_optimistic_get(LA, BL, MC, MTR) \ + buf_page_optimistic_get_func(LA, BL, MC, __FILE__, __LINE__, MTR) +/************************************************************************ +This is the general function used to get optimistic access to a database +page. */ +UNIV_INTERN +ibool +buf_page_optimistic_get_func( +/*=========================*/ + /* out: TRUE if success */ + ulint rw_latch,/* in: RW_S_LATCH, RW_X_LATCH */ + buf_block_t* block, /* in: guessed block */ + ib_uint64_t modify_clock,/* in: modify clock value if mode is + ..._GUESS_ON_CLOCK */ + const char* file, /* in: file name */ + ulint line, /* in: line where called */ + mtr_t* mtr); /* in: mini-transaction */ +/************************************************************************ +This is used to get access to a known database page, when no waiting can be +done. */ +UNIV_INTERN +ibool +buf_page_get_known_nowait( +/*======================*/ + /* out: TRUE if success */ + ulint rw_latch,/* in: RW_S_LATCH, RW_X_LATCH */ + buf_block_t* block, /* in: the known page */ + ulint mode, /* in: BUF_MAKE_YOUNG or BUF_KEEP_OLD */ + const char* file, /* in: file name */ + ulint line, /* in: line where called */ + mtr_t* mtr); /* in: mini-transaction */ + +/*********************************************************************** +Given a tablespace id and page number tries to get that page. If the +page is not in the buffer pool it is not loaded and NULL is returned. +Suitable for using when holding the kernel mutex. */ + +const buf_block_t* +buf_page_try_get_func( +/*==================*/ + ulint space_id,/* in: tablespace id */ + ulint page_no,/* in: page number */ + const char* file, /* in: file name */ + ulint line, /* in: line where called */ + mtr_t* mtr); /* in: mini-transaction */ + +#define buf_page_try_get(space_id, page_no, mtr) \ + buf_page_try_get_func(space_id, page_no, __FILE__, __LINE__, mtr); + +/************************************************************************ +Get read access to a compressed page (usually of type +FIL_PAGE_TYPE_ZBLOB or FIL_PAGE_TYPE_ZBLOB2). +The page must be released with buf_page_release_zip(). +NOTE: the page is not protected by any latch. Mutual exclusion has to +be implemented at a higher level. In other words, all possible +accesses to a given page through this function must be protected by +the same set of mutexes or latches. */ +UNIV_INTERN +buf_page_t* +buf_page_get_zip( +/*=============*/ + /* out: pointer to the block, + or NULL if not compressed */ + ulint space, /* in: space id */ + ulint zip_size,/* in: compressed page size */ + ulint offset);/* in: page number */ +/************************************************************************ +This is the general function used to get access to a database page. */ +UNIV_INTERN +buf_block_t* +buf_page_get_gen( +/*=============*/ + /* out: pointer to the block or NULL */ + ulint space, /* in: space id */ + ulint zip_size,/* in: compressed page size in bytes + or 0 for uncompressed pages */ + ulint offset, /* in: page number */ + ulint rw_latch,/* in: RW_S_LATCH, RW_X_LATCH, RW_NO_LATCH */ + buf_block_t* guess, /* in: guessed block or NULL */ + ulint mode, /* in: BUF_GET, BUF_GET_IF_IN_POOL, + BUF_GET_NO_LATCH */ + const char* file, /* in: file name */ + ulint line, /* in: line where called */ + mtr_t* mtr); /* in: mini-transaction */ +/************************************************************************ +Initializes a page to the buffer buf_pool. The page is usually not read +from a file even if it cannot be found in the buffer buf_pool. This is one +of the functions which perform to a block a state transition NOT_USED => +FILE_PAGE (the other is buf_page_get_gen). */ +UNIV_INTERN +buf_block_t* +buf_page_create( +/*============*/ + /* out: pointer to the block, page bufferfixed */ + ulint space, /* in: space id */ + ulint offset, /* in: offset of the page within space in units of + a page */ + ulint zip_size,/* in: compressed page size, or 0 */ + mtr_t* mtr); /* in: mini-transaction handle */ +#ifdef UNIV_HOTBACKUP +/************************************************************************ +Inits a page to the buffer buf_pool, for use in ibbackup --restore. */ +UNIV_INTERN +void +buf_page_init_for_backup_restore( +/*=============================*/ + ulint space, /* in: space id */ + ulint offset, /* in: offset of the page within space + in units of a page */ + ulint zip_size,/* in: compressed page size in bytes + or 0 for uncompressed pages */ + buf_block_t* block); /* in: block to init */ +#endif /* UNIV_HOTBACKUP */ +/************************************************************************ +Releases a compressed-only page acquired with buf_page_get_zip(). */ +UNIV_INLINE +void +buf_page_release_zip( +/*=================*/ + buf_page_t* bpage); /* in: buffer block */ +/************************************************************************ +Decrements the bufferfix count of a buffer control block and releases +a latch, if specified. */ +UNIV_INLINE +void +buf_page_release( +/*=============*/ + buf_block_t* block, /* in: buffer block */ + ulint rw_latch, /* in: RW_S_LATCH, RW_X_LATCH, + RW_NO_LATCH */ + mtr_t* mtr); /* in: mtr */ +/************************************************************************ +Moves a page to the start of the buffer pool LRU list. This high-level +function can be used to prevent an important page from from slipping out of +the buffer pool. */ +UNIV_INTERN +void +buf_page_make_young( +/*================*/ + buf_page_t* bpage); /* in: buffer block of a file page */ +/************************************************************************ +Returns TRUE if the page can be found in the buffer pool hash table. NOTE +that it is possible that the page is not yet read from disk, though. */ +UNIV_INLINE +ibool +buf_page_peek( +/*==========*/ + /* out: TRUE if found from page hash table, + NOTE that the page is not necessarily yet read + from disk! */ + ulint space, /* in: space id */ + ulint offset);/* in: page number */ +/************************************************************************ +Resets the check_index_page_at_flush field of a page if found in the buffer +pool. */ +UNIV_INTERN +void +buf_reset_check_index_page_at_flush( +/*================================*/ + ulint space, /* in: space id */ + ulint offset);/* in: page number */ +#ifdef UNIV_DEBUG_FILE_ACCESSES +/************************************************************************ +Sets file_page_was_freed TRUE if the page is found in the buffer pool. +This function should be called when we free a file page and want the +debug version to check that it is not accessed any more unless +reallocated. */ +UNIV_INTERN +buf_page_t* +buf_page_set_file_page_was_freed( +/*=============================*/ + /* out: control block if found in page hash table, + otherwise NULL */ + ulint space, /* in: space id */ + ulint offset);/* in: page number */ +/************************************************************************ +Sets file_page_was_freed FALSE if the page is found in the buffer pool. +This function should be called when we free a file page and want the +debug version to check that it is not accessed any more unless +reallocated. */ +UNIV_INTERN +buf_page_t* +buf_page_reset_file_page_was_freed( +/*===============================*/ + /* out: control block if found in page hash table, + otherwise NULL */ + ulint space, /* in: space id */ + ulint offset); /* in: page number */ +#endif /* UNIV_DEBUG_FILE_ACCESSES */ +/************************************************************************ +Reads the freed_page_clock of a buffer block. */ +UNIV_INLINE +ulint +buf_page_get_freed_page_clock( +/*==========================*/ + /* out: freed_page_clock */ + const buf_page_t* bpage) /* in: block */ + __attribute__((pure)); +/************************************************************************ +Reads the freed_page_clock of a buffer block. */ +UNIV_INLINE +ulint +buf_block_get_freed_page_clock( +/*===========================*/ + /* out: freed_page_clock */ + const buf_block_t* block) /* in: block */ + __attribute__((pure)); + +/************************************************************************ +Recommends a move of a block to the start of the LRU list if there is danger +of dropping from the buffer pool. NOTE: does not reserve the buffer pool +mutex. */ +UNIV_INLINE +ibool +buf_page_peek_if_too_old( +/*=====================*/ + /* out: TRUE if should be made + younger */ + const buf_page_t* bpage); /* in: block to make younger */ +/************************************************************************ +Returns the current state of is_hashed of a page. FALSE if the page is +not in the pool. NOTE that this operation does not fix the page in the +pool if it is found there. */ +UNIV_INTERN +ibool +buf_page_peek_if_search_hashed( +/*===========================*/ + /* out: TRUE if page hash index is built in search + system */ + ulint space, /* in: space id */ + ulint offset);/* in: page number */ +/************************************************************************ +Gets the youngest modification log sequence number for a frame. +Returns zero if not file page or no modification occurred yet. */ +UNIV_INLINE +ib_uint64_t +buf_page_get_newest_modification( +/*=============================*/ + /* out: newest modification to page */ + const buf_page_t* bpage); /* in: block containing the + page frame */ +/************************************************************************ +Increments the modify clock of a frame by 1. The caller must (1) own the +buf_pool mutex and block bufferfix count has to be zero, (2) or own an x-lock +on the block. */ +UNIV_INLINE +void +buf_block_modify_clock_inc( +/*=======================*/ + buf_block_t* block); /* in: block */ +/************************************************************************ +Returns the value of the modify clock. The caller must have an s-lock +or x-lock on the block. */ +UNIV_INLINE +ib_uint64_t +buf_block_get_modify_clock( +/*=======================*/ + /* out: value */ + buf_block_t* block); /* in: block */ +/************************************************************************ +Calculates a page checksum which is stored to the page when it is written +to a file. Note that we must be careful to calculate the same value +on 32-bit and 64-bit architectures. */ +UNIV_INTERN +ulint +buf_calc_page_new_checksum( +/*=======================*/ + /* out: checksum */ + const byte* page); /* in: buffer page */ +/************************************************************************ +In versions < 4.0.14 and < 4.1.1 there was a bug that the checksum only +looked at the first few bytes of the page. This calculates that old +checksum. +NOTE: we must first store the new formula checksum to +FIL_PAGE_SPACE_OR_CHKSUM before calculating and storing this old checksum +because this takes that field as an input! */ +UNIV_INTERN +ulint +buf_calc_page_old_checksum( +/*=======================*/ + /* out: checksum */ + const byte* page); /* in: buffer page */ +/************************************************************************ +Checks if a page is corrupt. */ +UNIV_INTERN +ibool +buf_page_is_corrupted( +/*==================*/ + /* out: TRUE if corrupted */ + const byte* read_buf, /* in: a database page */ + ulint zip_size); /* in: size of compressed page; + 0 for uncompressed pages */ +/************************************************************************** +Gets the space id, page offset, and byte offset within page of a +pointer pointing to a buffer frame containing a file page. */ +UNIV_INLINE +void +buf_ptr_get_fsp_addr( +/*=================*/ + const void* ptr, /* in: pointer to a buffer frame */ + ulint* space, /* out: space id */ + fil_addr_t* addr); /* out: page offset and byte offset */ +/************************************************************************** +Gets the hash value of a block. This can be used in searches in the +lock hash table. */ +UNIV_INLINE +ulint +buf_block_get_lock_hash_val( +/*========================*/ + /* out: lock hash value */ + const buf_block_t* block) /* in: block */ + __attribute__((pure)); +#ifdef UNIV_DEBUG +/************************************************************************* +Finds a block in the buffer pool that points to a +given compressed page. */ +UNIV_INTERN +buf_block_t* +buf_pool_contains_zip( +/*==================*/ + /* out: buffer block pointing to + the compressed page, or NULL */ + const void* data); /* in: pointer to compressed page */ +#endif /* UNIV_DEBUG */ +#if defined UNIV_DEBUG || defined UNIV_BUF_DEBUG +/************************************************************************* +Validates the buffer pool data structure. */ +UNIV_INTERN +ibool +buf_validate(void); +/*==============*/ +#endif /* UNIV_DEBUG || UNIV_BUF_DEBUG */ +#if defined UNIV_DEBUG_PRINT || defined UNIV_DEBUG || defined UNIV_BUF_DEBUG +/************************************************************************* +Prints info of the buffer pool data structure. */ +UNIV_INTERN +void +buf_print(void); +/*============*/ +#endif /* UNIV_DEBUG_PRINT || UNIV_DEBUG || UNIV_BUF_DEBUG */ +/************************************************************************ +Prints a page to stderr. */ +UNIV_INTERN +void +buf_page_print( +/*===========*/ + const byte* read_buf, /* in: a database page */ + ulint zip_size); /* in: compressed page size, or + 0 for uncompressed pages */ +#ifdef UNIV_DEBUG +/************************************************************************* +Returns the number of latched pages in the buffer pool. */ +UNIV_INTERN +ulint +buf_get_latched_pages_number(void); +/*==============================*/ +#endif /* UNIV_DEBUG */ +/************************************************************************* +Returns the number of pending buf pool ios. */ +UNIV_INTERN +ulint +buf_get_n_pending_ios(void); +/*=======================*/ +/************************************************************************* +Prints info of the buffer i/o. */ +UNIV_INTERN +void +buf_print_io( +/*=========*/ + FILE* file); /* in: file where to print */ +/************************************************************************* +Returns the ratio in percents of modified pages in the buffer pool / +database pages in the buffer pool. */ +UNIV_INTERN +ulint +buf_get_modified_ratio_pct(void); +/*============================*/ +/************************************************************************** +Refreshes the statistics used to print per-second averages. */ +UNIV_INTERN +void +buf_refresh_io_stats(void); +/*======================*/ +/************************************************************************* +Checks that all file pages in the buffer are in a replaceable state. */ +UNIV_INTERN +ibool +buf_all_freed(void); +/*===============*/ +/************************************************************************* +Checks that there currently are no pending i/o-operations for the buffer +pool. */ +UNIV_INTERN +ibool +buf_pool_check_no_pending_io(void); +/*==============================*/ + /* out: TRUE if there is no pending i/o */ +/************************************************************************* +Invalidates the file pages in the buffer pool when an archive recovery is +completed. All the file pages buffered must be in a replaceable state when +this function is called: not latched and not modified. */ +UNIV_INTERN +void +buf_pool_invalidate(void); +/*=====================*/ + +/*======================================================================== +--------------------------- LOWER LEVEL ROUTINES ------------------------- +=========================================================================*/ + +#ifdef UNIV_SYNC_DEBUG +/************************************************************************* +Adds latch level info for the rw-lock protecting the buffer frame. This +should be called in the debug version after a successful latching of a +page if we know the latching order level of the acquired latch. */ +UNIV_INLINE +void +buf_block_dbg_add_level( +/*====================*/ + buf_block_t* block, /* in: buffer page + where we have acquired latch */ + ulint level); /* in: latching order level */ +#else /* UNIV_SYNC_DEBUG */ +# define buf_block_dbg_add_level(block, level) /* nothing */ +#endif /* UNIV_SYNC_DEBUG */ +/************************************************************************* +Gets the state of a block. */ +UNIV_INLINE +enum buf_page_state +buf_page_get_state( +/*===============*/ + /* out: state */ + const buf_page_t* bpage); /* in: pointer to the control block */ +/************************************************************************* +Gets the state of a block. */ +UNIV_INLINE +enum buf_page_state +buf_block_get_state( +/*================*/ + /* out: state */ + const buf_block_t* block) /* in: pointer to the control block */ + __attribute__((pure)); +/************************************************************************* +Sets the state of a block. */ +UNIV_INLINE +void +buf_page_set_state( +/*===============*/ + buf_page_t* bpage, /* in/out: pointer to control block */ + enum buf_page_state state); /* in: state */ +/************************************************************************* +Sets the state of a block. */ +UNIV_INLINE +void +buf_block_set_state( +/*================*/ + buf_block_t* block, /* in/out: pointer to control block */ + enum buf_page_state state); /* in: state */ +/************************************************************************* +Determines if a block is mapped to a tablespace. */ +UNIV_INLINE +ibool +buf_page_in_file( +/*=============*/ + /* out: TRUE if mapped */ + const buf_page_t* bpage) /* in: pointer to control block */ + __attribute__((pure)); +/************************************************************************* +Determines if a block should be on unzip_LRU list. */ +UNIV_INLINE +ibool +buf_page_belongs_to_unzip_LRU( +/*==========================*/ + /* out: TRUE if block belongs + to unzip_LRU */ + const buf_page_t* bpage) /* in: pointer to control block */ + __attribute__((pure)); +/************************************************************************* +Determine the approximate LRU list position of a block. */ +UNIV_INLINE +ulint +buf_page_get_LRU_position( +/*======================*/ + /* out: LRU list position */ + const buf_page_t* bpage) /* in: control block */ + __attribute__((pure)); + +/************************************************************************* +Gets the mutex of a block. */ +UNIV_INLINE +mutex_t* +buf_page_get_mutex( +/*===============*/ + /* out: pointer to mutex + protecting bpage */ + const buf_page_t* bpage) /* in: pointer to control block */ + __attribute__((pure)); + +/************************************************************************* +Get the flush type of a page. */ +UNIV_INLINE +enum buf_flush +buf_page_get_flush_type( +/*====================*/ + /* out: flush type */ + const buf_page_t* bpage) /* in: buffer page */ + __attribute__((pure)); +/************************************************************************* +Set the flush type of a page. */ +UNIV_INLINE +void +buf_page_set_flush_type( +/*====================*/ + buf_page_t* bpage, /* in: buffer page */ + enum buf_flush flush_type); /* in: flush type */ +/************************************************************************* +Map a block to a file page. */ +UNIV_INLINE +void +buf_block_set_file_page( +/*====================*/ + buf_block_t* block, /* in/out: pointer to control block */ + ulint space, /* in: tablespace id */ + ulint page_no);/* in: page number */ +/************************************************************************* +Gets the io_fix state of a block. */ +UNIV_INLINE +enum buf_io_fix +buf_page_get_io_fix( +/*================*/ + /* out: io_fix state */ + const buf_page_t* bpage) /* in: pointer to the control block */ + __attribute__((pure)); +/************************************************************************* +Gets the io_fix state of a block. */ +UNIV_INLINE +enum buf_io_fix +buf_block_get_io_fix( +/*================*/ + /* out: io_fix state */ + const buf_block_t* block) /* in: pointer to the control block */ + __attribute__((pure)); +/************************************************************************* +Sets the io_fix state of a block. */ +UNIV_INLINE +void +buf_page_set_io_fix( +/*================*/ + buf_page_t* bpage, /* in/out: control block */ + enum buf_io_fix io_fix);/* in: io_fix state */ +/************************************************************************* +Sets the io_fix state of a block. */ +UNIV_INLINE +void +buf_block_set_io_fix( +/*=================*/ + buf_block_t* block, /* in/out: control block */ + enum buf_io_fix io_fix);/* in: io_fix state */ + +/************************************************************************ +Determine if a buffer block can be relocated in memory. The block +can be dirty, but it must not be I/O-fixed or bufferfixed. */ +UNIV_INLINE +ibool +buf_page_can_relocate( +/*==================*/ + const buf_page_t* bpage) /* control block being relocated */ + __attribute__((pure)); + +/************************************************************************* +Determine if a block has been flagged old. */ +UNIV_INLINE +ibool +buf_page_is_old( +/*============*/ + /* out: TRUE if old */ + const buf_page_t* bpage) /* in: control block */ + __attribute__((pure)); +/************************************************************************* +Flag a block old. */ +UNIV_INLINE +void +buf_page_set_old( +/*=============*/ + buf_page_t* bpage, /* in/out: control block */ + ibool old); /* in: old */ +/************************************************************************* +Determine if a block has been accessed in the buffer pool. */ +UNIV_INLINE +ibool +buf_page_is_accessed( +/*=================*/ + /* out: TRUE if accessed */ + const buf_page_t* bpage) /* in: control block */ + __attribute__((pure)); +/************************************************************************* +Flag a block accessed. */ +UNIV_INLINE +void +buf_page_set_accessed( +/*==================*/ + buf_page_t* bpage, /* in/out: control block */ + ibool accessed); /* in: accessed */ +/************************************************************************* +Gets the buf_block_t handle of a buffered file block if an uncompressed +page frame exists, or NULL. */ +UNIV_INLINE +buf_block_t* +buf_page_get_block( +/*===============*/ + /* out: control block, or NULL */ + buf_page_t* bpage) /* in: control block, or NULL */ + __attribute__((pure)); +#ifdef UNIV_DEBUG +/************************************************************************* +Gets a pointer to the memory frame of a block. */ +UNIV_INLINE +buf_frame_t* +buf_block_get_frame( +/*================*/ + /* out: pointer to the frame */ + const buf_block_t* block) /* in: pointer to the control block */ + __attribute__((pure)); +#else /* UNIV_DEBUG */ +# define buf_block_get_frame(block) (block)->frame +#endif /* UNIV_DEBUG */ +/************************************************************************* +Gets the space id of a block. */ +UNIV_INLINE +ulint +buf_page_get_space( +/*===============*/ + /* out: space id */ + const buf_page_t* bpage) /* in: pointer to the control block */ + __attribute__((pure)); +/************************************************************************* +Gets the space id of a block. */ +UNIV_INLINE +ulint +buf_block_get_space( +/*================*/ + /* out: space id */ + const buf_block_t* block) /* in: pointer to the control block */ + __attribute__((pure)); +/************************************************************************* +Gets the page number of a block. */ +UNIV_INLINE +ulint +buf_page_get_page_no( +/*=================*/ + /* out: page number */ + const buf_page_t* bpage) /* in: pointer to the control block */ + __attribute__((pure)); +/************************************************************************* +Gets the page number of a block. */ +UNIV_INLINE +ulint +buf_block_get_page_no( +/*==================*/ + /* out: page number */ + const buf_block_t* block) /* in: pointer to the control block */ + __attribute__((pure)); +/************************************************************************* +Gets the compressed page size of a block. */ +UNIV_INLINE +ulint +buf_page_get_zip_size( +/*==================*/ + /* out: compressed page size, or 0 */ + const buf_page_t* bpage) /* in: pointer to the control block */ + __attribute__((pure)); +/************************************************************************* +Gets the compressed page size of a block. */ +UNIV_INLINE +ulint +buf_block_get_zip_size( +/*===================*/ + /* out: compressed page size, or 0 */ + const buf_block_t* block) /* in: pointer to the control block */ + __attribute__((pure)); +/************************************************************************* +Gets the compressed page descriptor corresponding to an uncompressed page +if applicable. */ +#define buf_block_get_page_zip(block) \ + (UNIV_LIKELY_NULL((block)->page.zip.data) ? &(block)->page.zip : NULL) +/*********************************************************************** +Gets the block to whose frame the pointer is pointing to. */ +UNIV_INTERN +buf_block_t* +buf_block_align( +/*============*/ + /* out: pointer to block, never NULL */ + const byte* ptr); /* in: pointer to a frame */ +#if defined UNIV_DEBUG || defined UNIV_ZIP_DEBUG +/************************************************************************* +Gets the compressed page descriptor corresponding to an uncompressed page +if applicable. */ +UNIV_INLINE +const page_zip_des_t* +buf_frame_get_page_zip( +/*===================*/ + /* out: compressed page descriptor, or NULL */ + const byte* ptr); /* in: pointer to the page */ +#endif /* UNIV_DEBUG || UNIV_ZIP_DEBUG */ +/************************************************************************ +This function is used to get info if there is an io operation +going on on a buffer page. */ +UNIV_INLINE +ibool +buf_page_io_query( +/*==============*/ + /* out: TRUE if io going on */ + buf_page_t* bpage); /* in: pool block, must be bufferfixed */ +/************************************************************************ +Function which inits a page for read to the buffer buf_pool. If the page is +(1) already in buf_pool, or +(2) if we specify to read only ibuf pages and the page is not an ibuf page, or +(3) if the space is deleted or being deleted, +then this function does nothing. +Sets the io_fix flag to BUF_IO_READ and sets a non-recursive exclusive lock +on the buffer frame. The io-handler must take care that the flag is cleared +and the lock released later. */ +UNIV_INTERN +buf_page_t* +buf_page_init_for_read( +/*===================*/ + /* out: pointer to the block or NULL */ + ulint* err, /* out: DB_SUCCESS or DB_TABLESPACE_DELETED */ + ulint mode, /* in: BUF_READ_IBUF_PAGES_ONLY, ... */ + ulint space, /* in: space id */ + ulint zip_size,/* in: compressed page size, or 0 */ + ibool unzip, /* in: TRUE=request uncompressed page */ + ib_int64_t tablespace_version,/* in: prevents reading from a wrong + version of the tablespace in case we have done + DISCARD + IMPORT */ + ulint offset);/* in: page number */ +/************************************************************************ +Completes an asynchronous read or write request of a file page to or from +the buffer pool. */ +UNIV_INTERN +void +buf_page_io_complete( +/*=================*/ + buf_page_t* bpage); /* in: pointer to the block in question */ +/************************************************************************ +Calculates a folded value of a file page address to use in the page hash +table. */ +UNIV_INLINE +ulint +buf_page_address_fold( +/*==================*/ + /* out: the folded value */ + ulint space, /* in: space id */ + ulint offset) /* in: offset of the page within space */ + __attribute__((const)); +/********************************************************************** +Returns the control block of a file page, NULL if not found. */ +UNIV_INLINE +buf_page_t* +buf_page_hash_get( +/*==============*/ + /* out: block, NULL if not found */ + ulint space, /* in: space id */ + ulint offset);/* in: offset of the page within space */ +/********************************************************************** +Returns the control block of a file page, NULL if not found +or an uncompressed page frame does not exist. */ +UNIV_INLINE +buf_block_t* +buf_block_hash_get( +/*===============*/ + /* out: block, NULL if not found */ + ulint space, /* in: space id */ + ulint offset);/* in: offset of the page within space */ +/*********************************************************************** +Increments the pool clock by one and returns its new value. Remember that +in the 32 bit version the clock wraps around at 4 billion! */ +UNIV_INLINE +ulint +buf_pool_clock_tic(void); +/*====================*/ + /* out: new clock value */ +/************************************************************************* +Gets the current length of the free list of buffer blocks. */ +UNIV_INTERN +ulint +buf_get_free_list_len(void); +/*=======================*/ + + + +/* The common buffer control block structure +for compressed and uncompressed frames */ + +struct buf_page_struct{ + /* None of the following bit-fields must be modified without + holding buf_page_get_mutex() [block->mutex or buf_pool_zip_mutex], + since they can be stored in the same machine word. Some of them are + additionally protected by buf_pool_mutex. */ + + unsigned space:32; /* tablespace id; also protected + by buf_pool_mutex. */ + unsigned offset:32; /* page number; also protected + by buf_pool_mutex. */ + + unsigned state:3; /* state of the control block + (@see enum buf_page_state); also + protected by buf_pool_mutex. + State transitions from + BUF_BLOCK_READY_FOR_USE to + BUF_BLOCK_MEMORY need not be + protected by buf_page_get_mutex(). */ + unsigned flush_type:2; /* if this block is currently being + flushed to disk, this tells the + flush_type (@see enum buf_flush) */ + unsigned accessed:1; /* TRUE if the page has been accessed + while in the buffer pool: read-ahead + may read in pages which have not been + accessed yet; a thread is allowed to + read this for heuristic purposes + without holding any mutex or latch */ + unsigned io_fix:2; /* type of pending I/O operation + (@see enum buf_io_fix); also + protected by buf_pool_mutex */ + unsigned buf_fix_count:24;/* count of how manyfold this block + is currently bufferfixed */ + + page_zip_des_t zip; /* compressed page; zip.data + (but not the data it points to) is + also protected by buf_pool_mutex */ + buf_page_t* hash; /* node used in chaining to + buf_pool->page_hash or + buf_pool->zip_hash */ +#ifdef UNIV_DEBUG + ibool in_page_hash; /* TRUE if in buf_pool->page_hash */ + ibool in_zip_hash; /* TRUE if in buf_pool->zip_hash */ +#endif /* UNIV_DEBUG */ + + /* 2. Page flushing fields; protected by buf_pool_mutex */ + + UT_LIST_NODE_T(buf_page_t) list; + /* based on state, this is a list + node in one of the following lists + in buf_pool: + + BUF_BLOCK_NOT_USED: free + BUF_BLOCK_FILE_PAGE: flush_list + BUF_BLOCK_ZIP_DIRTY: flush_list + BUF_BLOCK_ZIP_PAGE: zip_clean + BUF_BLOCK_ZIP_FREE: zip_free[] */ +#ifdef UNIV_DEBUG + ibool in_flush_list; /* TRUE if in buf_pool->flush_list; + when buf_pool_mutex is free, the + following should hold: in_flush_list + == (state == BUF_BLOCK_FILE_PAGE + || state == BUF_BLOCK_ZIP_DIRTY) */ + ibool in_free_list; /* TRUE if in buf_pool->free; when + buf_pool_mutex is free, the following + should hold: in_free_list + == (state == BUF_BLOCK_NOT_USED) */ +#endif /* UNIV_DEBUG */ + ib_uint64_t newest_modification; + /* log sequence number of the youngest + modification to this block, zero if + not modified */ + ib_uint64_t oldest_modification; + /* log sequence number of the START of + the log entry written of the oldest + modification to this block which has + not yet been flushed on disk; zero if + all modifications are on disk */ + + /* 3. LRU replacement algorithm fields; protected by + buf_pool_mutex only (not buf_pool_zip_mutex or block->mutex) */ + + UT_LIST_NODE_T(buf_page_t) LRU; + /* node of the LRU list */ +//#ifdef UNIV_DEBUG + ibool in_LRU_list; /* TRUE if the page is in the LRU list; + used in debugging */ +//#endif /* UNIV_DEBUG */ + unsigned old:1; /* TRUE if the block is in the old + blocks in the LRU list */ + unsigned LRU_position:31;/* value which monotonically decreases + (or may stay constant if old==TRUE) + toward the end of the LRU list, if + buf_pool->ulint_clock has not wrapped + around: NOTE that this value can only + be used in heuristic algorithms, + because of the possibility of a + wrap-around! */ + unsigned freed_page_clock:32;/* the value of + buf_pool->freed_page_clock when this + block was the last time put to the + head of the LRU list; a thread is + allowed to read this for heuristic + purposes without holding any mutex or + latch */ +#ifdef UNIV_DEBUG_FILE_ACCESSES + ibool file_page_was_freed; + /* this is set to TRUE when fsp + frees a page in buffer pool */ +#endif /* UNIV_DEBUG_FILE_ACCESSES */ +}; + +/* The buffer control block structure */ + +struct buf_block_struct{ + + /* 1. General fields */ + + buf_page_t page; /* page information; this must + be the first field, so that + buf_pool->page_hash can point + to buf_page_t or buf_block_t */ + UT_LIST_NODE_T(buf_block_t) unzip_LRU; + /* node of the decompressed LRU list; + a block is in the unzip_LRU list + if page.state == BUF_BLOCK_FILE_PAGE + and page.zip.data != NULL */ +#ifdef UNIV_DEBUG + ibool in_unzip_LRU_list;/* TRUE if the page is in the + decompressed LRU list; + used in debugging */ +#endif /* UNIV_DEBUG */ + byte* frame; /* pointer to buffer frame which + is of size UNIV_PAGE_SIZE, and + aligned to an address divisible by + UNIV_PAGE_SIZE */ + mutex_t mutex; /* mutex protecting this block: + state (also protected by the buffer + pool mutex), io_fix, buf_fix_count, + and accessed; we introduce this new + mutex in InnoDB-5.1 to relieve + contention on the buffer pool mutex */ + rw_lock_t lock; /* read-write lock of the buffer + frame */ + unsigned lock_hash_val:32;/* hashed value of the page address + in the record lock hash table */ + unsigned check_index_page_at_flush:1; + /* TRUE if we know that this is + an index page, and want the database + to check its consistency before flush; + note that there may be pages in the + buffer pool which are index pages, + but this flag is not set because + we do not keep track of all pages */ + + /* 2. Optimistic search field */ + + ib_uint64_t modify_clock; /* this clock is incremented every + time a pointer to a record on the + page may become obsolete; this is + used in the optimistic cursor + positioning: if the modify clock has + not changed, we know that the pointer + is still valid; this field may be + changed if the thread (1) owns the + pool mutex and the page is not + bufferfixed, or (2) the thread has an + x-latch on the block */ + + /* 3. Hash search fields: NOTE that the first 4 fields are NOT + protected by any semaphore! */ + + ulint n_hash_helps; /* counter which controls building + of a new hash index for the page */ + ulint n_fields; /* recommended prefix length for hash + search: number of full fields */ + ulint n_bytes; /* recommended prefix: number of bytes + in an incomplete field */ + ibool left_side; /* TRUE or FALSE, depending on + whether the leftmost record of several + records with the same prefix should be + indexed in the hash index */ + + /* These 6 fields may only be modified when we have + an x-latch on btr_search_latch AND + a) we are holding an s-latch or x-latch on block->lock or + b) we know that block->buf_fix_count == 0. + + An exception to this is when we init or create a page + in the buffer pool in buf0buf.c. */ + +#if defined UNIV_AHI_DEBUG || defined UNIV_DEBUG + ulint n_pointers; /* used in debugging: the number of + pointers in the adaptive hash index + pointing to this frame */ +#endif /* UNIV_AHI_DEBUG || UNIV_DEBUG */ + unsigned is_hashed:1; /* TRUE if hash index has already been + built on this page; note that it does + not guarantee that the index is + complete, though: there may have been + hash collisions, record deletions, + etc. */ + unsigned curr_n_fields:10;/* prefix length for hash indexing: + number of full fields */ + unsigned curr_n_bytes:15;/* number of bytes in hash indexing */ + unsigned curr_left_side:1;/* TRUE or FALSE in hash indexing */ + dict_index_t* index; /* Index for which the adaptive + hash index has been created. */ + /* 4. Debug fields */ +#ifdef UNIV_SYNC_DEBUG + rw_lock_t debug_latch; /* in the debug version, each thread + which bufferfixes the block acquires + an s-latch here; so we can use the + debug utilities in sync0rw */ +#endif +}; + +/* Check if a buf_block_t object is in a valid state. */ +#define buf_block_state_valid(block) \ +(buf_block_get_state(block) >= BUF_BLOCK_NOT_USED \ + && (buf_block_get_state(block) <= BUF_BLOCK_REMOVE_HASH)) + +/************************************************************************** +Compute the hash fold value for blocks in buf_pool->zip_hash. */ +#define BUF_POOL_ZIP_FOLD_PTR(ptr) ((ulint) (ptr) / UNIV_PAGE_SIZE) +#define BUF_POOL_ZIP_FOLD(b) BUF_POOL_ZIP_FOLD_PTR((b)->frame) +#define BUF_POOL_ZIP_FOLD_BPAGE(b) BUF_POOL_ZIP_FOLD((buf_block_t*) (b)) + +/* The buffer pool structure. NOTE! The definition appears here only for +other modules of this directory (buf) to see it. Do not use from outside! */ + +struct buf_pool_struct{ + + /* 1. General fields */ + + ulint n_chunks; /* number of buffer pool chunks */ + buf_chunk_t* chunks; /* buffer pool chunks */ + ulint curr_size; /* current pool size in pages */ + hash_table_t* page_hash; /* hash table of buf_page_t or + buf_block_t file pages, + buf_page_in_file() == TRUE, + indexed by (space_id, offset) */ + hash_table_t* zip_hash; /* hash table of buf_block_t blocks + whose frames are allocated to the + zip buddy system, + indexed by block->frame */ + ulint n_pend_reads; /* number of pending read operations */ + ulint n_pend_unzip; /* number of pending decompressions */ + + time_t last_printout_time; /* when buf_print was last time + called */ + ulint n_pages_read; /* number read operations */ + ulint n_pages_written;/* number write operations */ + ulint n_pages_created;/* number of pages created in the pool + with no read */ + ulint n_page_gets; /* number of page gets performed; + also successful searches through + the adaptive hash index are + counted as page gets; this field + is NOT protected by the buffer + pool mutex */ + ulint n_page_gets_old;/* n_page_gets when buf_print was + last time called: used to calculate + hit rate */ + ulint n_pages_read_old;/* n_pages_read when buf_print was + last time called */ + ulint n_pages_written_old;/* number write operations */ + ulint n_pages_created_old;/* number of pages created in + the pool with no read */ + /* 2. Page flushing algorithm fields */ + + UT_LIST_BASE_NODE_T(buf_page_t) flush_list; + /* base node of the modified block + list */ + ibool init_flush[BUF_FLUSH_N_TYPES]; + /* this is TRUE when a flush of the + given type is being initialized */ + ulint n_flush[BUF_FLUSH_N_TYPES]; + /* this is the number of pending + writes in the given flush type */ + os_event_t no_flush[BUF_FLUSH_N_TYPES]; + /* this is in the set state when there + is no flush batch of the given type + running */ + ulint ulint_clock; /* a sequence number used to count + time. NOTE! This counter wraps + around at 4 billion (if ulint == + 32 bits)! */ + ulint freed_page_clock;/* a sequence number used to count the + number of buffer blocks removed from + the end of the LRU list; NOTE that + this counter may wrap around at 4 + billion! A thread is allowed to + read this for heuristic purposes + without holding any mutex or latch */ + ulint LRU_flush_ended;/* when an LRU flush ends for a page, + this is incremented by one; this is + set to zero when a buffer block is + allocated */ + + /* 3. LRU replacement algorithm fields */ + + UT_LIST_BASE_NODE_T(buf_page_t) free; + /* base node of the free block list */ + UT_LIST_BASE_NODE_T(buf_page_t) LRU; + /* base node of the LRU list */ + buf_page_t* LRU_old; /* pointer to the about 3/8 oldest + blocks in the LRU list; NULL if LRU + length less than BUF_LRU_OLD_MIN_LEN; + NOTE: when LRU_old != NULL, its length + should always equal LRU_old_len */ + ulint LRU_old_len; /* length of the LRU list from + the block to which LRU_old points + onward, including that block; + see buf0lru.c for the restrictions + on this value; not defined if + LRU_old == NULL; + NOTE: LRU_old_len must be adjusted + whenever LRU_old shrinks or grows! */ + + UT_LIST_BASE_NODE_T(buf_block_t) unzip_LRU; + /* base node of the unzip_LRU list */ + + /* 4. Fields for the buddy allocator of compressed pages */ + UT_LIST_BASE_NODE_T(buf_page_t) zip_clean; + /* unmodified compressed pages */ + UT_LIST_BASE_NODE_T(buf_page_t) zip_free[BUF_BUDDY_SIZES]; + /* buddy free lists */ +#if BUF_BUDDY_HIGH != UNIV_PAGE_SIZE +# error "BUF_BUDDY_HIGH != UNIV_PAGE_SIZE" +#endif +#if BUF_BUDDY_LOW > PAGE_ZIP_MIN_SIZE +# error "BUF_BUDDY_LOW > PAGE_ZIP_MIN_SIZE" +#endif +}; + +/* mutex protecting the buffer pool struct and control blocks, except the +read-write lock in them */ +extern mutex_t buf_pool_mutex; +/* mutex protecting the control blocks of compressed-only pages +(of type buf_page_t, not buf_block_t) */ +extern mutex_t buf_pool_zip_mutex; + +/* Accessors for buf_pool_mutex. Use these instead of accessing +buf_pool_mutex directly. */ + +/* Test if buf_pool_mutex is owned. */ +#define buf_pool_mutex_own() mutex_own(&buf_pool_mutex) +/* Acquire the buffer pool mutex. */ +#define buf_pool_mutex_enter() do { \ + ut_ad(!mutex_own(&buf_pool_zip_mutex)); \ + mutex_enter(&buf_pool_mutex); \ +} while (0) + +#if defined UNIV_DEBUG || defined UNIV_BUF_DEBUG +/** Flag to forbid the release of the buffer pool mutex. +Protected by buf_pool_mutex. */ +extern ulint buf_pool_mutex_exit_forbidden; +/* Forbid the release of the buffer pool mutex. */ +# define buf_pool_mutex_exit_forbid() do { \ + ut_ad(buf_pool_mutex_own()); \ + buf_pool_mutex_exit_forbidden++; \ +} while (0) +/* Allow the release of the buffer pool mutex. */ +# define buf_pool_mutex_exit_allow() do { \ + ut_ad(buf_pool_mutex_own()); \ + ut_a(buf_pool_mutex_exit_forbidden); \ + buf_pool_mutex_exit_forbidden--; \ +} while (0) +/* Release the buffer pool mutex. */ +# define buf_pool_mutex_exit() do { \ + ut_a(!buf_pool_mutex_exit_forbidden); \ + mutex_exit(&buf_pool_mutex); \ +} while (0) +#else +/* Forbid the release of the buffer pool mutex. */ +# define buf_pool_mutex_exit_forbid() ((void) 0) +/* Allow the release of the buffer pool mutex. */ +# define buf_pool_mutex_exit_allow() ((void) 0) +/* Release the buffer pool mutex. */ +# define buf_pool_mutex_exit() mutex_exit(&buf_pool_mutex) +#endif + +/************************************************************************ +Let us list the consistency conditions for different control block states. + +NOT_USED: is in free list, not in LRU list, not in flush list, nor + page hash table +READY_FOR_USE: is not in free list, LRU list, or flush list, nor page + hash table +MEMORY: is not in free list, LRU list, or flush list, nor page + hash table +FILE_PAGE: space and offset are defined, is in page hash table + if io_fix == BUF_IO_WRITE, + pool: no_flush[flush_type] is in reset state, + pool: n_flush[flush_type] > 0 + + (1) if buf_fix_count == 0, then + is in LRU list, not in free list + is in flush list, + if and only if oldest_modification > 0 + is x-locked, + if and only if io_fix == BUF_IO_READ + is s-locked, + if and only if io_fix == BUF_IO_WRITE + + (2) if buf_fix_count > 0, then + is not in LRU list, not in free list + is in flush list, + if and only if oldest_modification > 0 + if io_fix == BUF_IO_READ, + is x-locked + if io_fix == BUF_IO_WRITE, + is s-locked + +State transitions: + +NOT_USED => READY_FOR_USE +READY_FOR_USE => MEMORY +READY_FOR_USE => FILE_PAGE +MEMORY => NOT_USED +FILE_PAGE => NOT_USED NOTE: This transition is allowed if and only if + (1) buf_fix_count == 0, + (2) oldest_modification == 0, and + (3) io_fix == 0. +*/ + +#ifndef UNIV_NONINL +#include "buf0buf.ic" +#endif + +#endif === added file 'storage/xtradb/include/buf0buf.ic' --- a/storage/xtradb/include/buf0buf.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/buf0buf.ic 2009-05-04 02:45:47 +0000 @@ -0,0 +1,1076 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. +Copyright (c) 2008, Google Inc. + +Portions of this file contain modifications contributed and copyrighted by +Google, Inc. Those modifications are gratefully acknowledged and are described +briefly in the InnoDB documentation. The contributions by Google are +incorporated with their permission, and subject to the conditions contained in +the file COPYING.Google. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +The database buffer buf_pool + +Created 11/5/1995 Heikki Tuuri +*******************************************************/ + +#include "buf0flu.h" +#include "buf0lru.h" +#include "buf0rea.h" +#include "mtr0mtr.h" + +/************************************************************************ +Reads the freed_page_clock of a buffer block. */ +UNIV_INLINE +ulint +buf_page_get_freed_page_clock( +/*==========================*/ + /* out: freed_page_clock */ + const buf_page_t* bpage) /* in: block */ +{ + /* This is sometimes read without holding buf_pool_mutex. */ + return(bpage->freed_page_clock); +} + +/************************************************************************ +Reads the freed_page_clock of a buffer block. */ +UNIV_INLINE +ulint +buf_block_get_freed_page_clock( +/*===========================*/ + /* out: freed_page_clock */ + const buf_block_t* block) /* in: block */ +{ + return(buf_page_get_freed_page_clock(&block->page)); +} + +/************************************************************************ +Recommends a move of a block to the start of the LRU list if there is danger +of dropping from the buffer pool. NOTE: does not reserve the buffer pool +mutex. */ +UNIV_INLINE +ibool +buf_page_peek_if_too_old( +/*=====================*/ + /* out: TRUE if should be made + younger */ + const buf_page_t* bpage) /* in: block to make younger */ +{ + return(buf_pool->freed_page_clock + >= buf_page_get_freed_page_clock(bpage) + + 1 + (buf_pool->curr_size / 4)); +} + +/************************************************************************* +Gets the current size of buffer buf_pool in bytes. */ +UNIV_INLINE +ulint +buf_pool_get_curr_size(void) +/*========================*/ + /* out: size in bytes */ +{ + return(buf_pool->curr_size * UNIV_PAGE_SIZE); +} + +/************************************************************************ +Gets the smallest oldest_modification lsn for any page in the pool. Returns +zero if all modified pages have been flushed to disk. */ +UNIV_INLINE +ib_uint64_t +buf_pool_get_oldest_modification(void) +/*==================================*/ + /* out: oldest modification in pool, + zero if none */ +{ + buf_page_t* bpage; + ib_uint64_t lsn; + + buf_pool_mutex_enter(); + + bpage = UT_LIST_GET_LAST(buf_pool->flush_list); + + if (bpage == NULL) { + lsn = 0; + } else { + ut_ad(bpage->in_flush_list); + lsn = bpage->oldest_modification; + } + + buf_pool_mutex_exit(); + + /* The returned answer may be out of date: the flush_list can + change after the mutex has been released. */ + + return(lsn); +} + +/*********************************************************************** +Increments the buf_pool clock by one and returns its new value. Remember +that in the 32 bit version the clock wraps around at 4 billion! */ +UNIV_INLINE +ulint +buf_pool_clock_tic(void) +/*====================*/ + /* out: new clock value */ +{ + ut_ad(buf_pool_mutex_own()); + + buf_pool->ulint_clock++; + + return(buf_pool->ulint_clock); +} + +/************************************************************************* +Gets the state of a block. */ +UNIV_INLINE +enum buf_page_state +buf_page_get_state( +/*===============*/ + /* out: state */ + const buf_page_t* bpage) /* in: pointer to the control block */ +{ + enum buf_page_state state = (enum buf_page_state) bpage->state; + +#ifdef UNIV_DEBUG + switch (state) { + case BUF_BLOCK_ZIP_FREE: + case BUF_BLOCK_ZIP_PAGE: + case BUF_BLOCK_ZIP_DIRTY: + case BUF_BLOCK_NOT_USED: + case BUF_BLOCK_READY_FOR_USE: + case BUF_BLOCK_FILE_PAGE: + case BUF_BLOCK_MEMORY: + case BUF_BLOCK_REMOVE_HASH: + break; + default: + ut_error; + } +#endif /* UNIV_DEBUG */ + + return(state); +} +/************************************************************************* +Gets the state of a block. */ +UNIV_INLINE +enum buf_page_state +buf_block_get_state( +/*================*/ + /* out: state */ + const buf_block_t* block) /* in: pointer to the control block */ +{ + return(buf_page_get_state(&block->page)); +} +/************************************************************************* +Sets the state of a block. */ +UNIV_INLINE +void +buf_page_set_state( +/*===============*/ + buf_page_t* bpage, /* in/out: pointer to control block */ + enum buf_page_state state) /* in: state */ +{ +#ifdef UNIV_DEBUG + enum buf_page_state old_state = buf_page_get_state(bpage); + + switch (old_state) { + case BUF_BLOCK_ZIP_FREE: + ut_error; + break; + case BUF_BLOCK_ZIP_PAGE: + ut_a(state == BUF_BLOCK_ZIP_DIRTY); + break; + case BUF_BLOCK_ZIP_DIRTY: + ut_a(state == BUF_BLOCK_ZIP_PAGE); + break; + case BUF_BLOCK_NOT_USED: + ut_a(state == BUF_BLOCK_READY_FOR_USE); + break; + case BUF_BLOCK_READY_FOR_USE: + ut_a(state == BUF_BLOCK_MEMORY + || state == BUF_BLOCK_FILE_PAGE + || state == BUF_BLOCK_NOT_USED); + break; + case BUF_BLOCK_MEMORY: + ut_a(state == BUF_BLOCK_NOT_USED); + break; + case BUF_BLOCK_FILE_PAGE: + ut_a(state == BUF_BLOCK_NOT_USED + || state == BUF_BLOCK_REMOVE_HASH); + break; + case BUF_BLOCK_REMOVE_HASH: + ut_a(state == BUF_BLOCK_MEMORY); + break; + } +#endif /* UNIV_DEBUG */ + bpage->state = state; + ut_ad(buf_page_get_state(bpage) == state); +} + +/************************************************************************* +Sets the state of a block. */ +UNIV_INLINE +void +buf_block_set_state( +/*================*/ + buf_block_t* block, /* in/out: pointer to control block */ + enum buf_page_state state) /* in: state */ +{ + buf_page_set_state(&block->page, state); +} + +/************************************************************************* +Determines if a block is mapped to a tablespace. */ +UNIV_INLINE +ibool +buf_page_in_file( +/*=============*/ + /* out: TRUE if mapped */ + const buf_page_t* bpage) /* in: pointer to control block */ +{ + switch (buf_page_get_state(bpage)) { + case BUF_BLOCK_ZIP_FREE: + /* This is a free page in buf_pool->zip_free[]. + Such pages should only be accessed by the buddy allocator. */ + ut_error; + break; + case BUF_BLOCK_ZIP_PAGE: + case BUF_BLOCK_ZIP_DIRTY: + case BUF_BLOCK_FILE_PAGE: + return(TRUE); + case BUF_BLOCK_NOT_USED: + case BUF_BLOCK_READY_FOR_USE: + case BUF_BLOCK_MEMORY: + case BUF_BLOCK_REMOVE_HASH: + break; + } + + return(FALSE); +} + +/************************************************************************* +Determines if a block should be on unzip_LRU list. */ +UNIV_INLINE +ibool +buf_page_belongs_to_unzip_LRU( +/*==========================*/ + /* out: TRUE if block belongs + to unzip_LRU */ + const buf_page_t* bpage) /* in: pointer to control block */ +{ + ut_ad(buf_page_in_file(bpage)); + + return(bpage->zip.data + && buf_page_get_state(bpage) == BUF_BLOCK_FILE_PAGE); +} + +/************************************************************************* +Determine the approximate LRU list position of a block. */ +UNIV_INLINE +ulint +buf_page_get_LRU_position( +/*======================*/ + /* out: LRU list position */ + const buf_page_t* bpage) /* in: control block */ +{ + ut_ad(buf_page_in_file(bpage)); + ut_ad(buf_pool_mutex_own()); + + return(bpage->LRU_position); +} + +/************************************************************************* +Gets the mutex of a block. */ +UNIV_INLINE +mutex_t* +buf_page_get_mutex( +/*===============*/ + /* out: pointer to mutex + protecting bpage */ + const buf_page_t* bpage) /* in: pointer to control block */ +{ + switch (buf_page_get_state(bpage)) { + case BUF_BLOCK_ZIP_FREE: + ut_error; + return(NULL); + case BUF_BLOCK_ZIP_PAGE: + case BUF_BLOCK_ZIP_DIRTY: + return(&buf_pool_zip_mutex); + default: + return(&((buf_block_t*) bpage)->mutex); + } +} + +/************************************************************************* +Get the flush type of a page. */ +UNIV_INLINE +enum buf_flush +buf_page_get_flush_type( +/*====================*/ + /* out: flush type */ + const buf_page_t* bpage) /* in: buffer page */ +{ + enum buf_flush flush_type = (enum buf_flush) bpage->flush_type; + +#ifdef UNIV_DEBUG + switch (flush_type) { + case BUF_FLUSH_LRU: + case BUF_FLUSH_SINGLE_PAGE: + case BUF_FLUSH_LIST: + return(flush_type); + case BUF_FLUSH_N_TYPES: + break; + } + ut_error; +#endif /* UNIV_DEBUG */ + return(flush_type); +} +/************************************************************************* +Set the flush type of a page. */ +UNIV_INLINE +void +buf_page_set_flush_type( +/*====================*/ + buf_page_t* bpage, /* in: buffer page */ + enum buf_flush flush_type) /* in: flush type */ +{ + bpage->flush_type = flush_type; + ut_ad(buf_page_get_flush_type(bpage) == flush_type); +} + +/************************************************************************* +Map a block to a file page. */ +UNIV_INLINE +void +buf_block_set_file_page( +/*====================*/ + buf_block_t* block, /* in/out: pointer to control block */ + ulint space, /* in: tablespace id */ + ulint page_no)/* in: page number */ +{ + buf_block_set_state(block, BUF_BLOCK_FILE_PAGE); + block->page.space = space; + block->page.offset = page_no; +} + +/************************************************************************* +Gets the io_fix state of a block. */ +UNIV_INLINE +enum buf_io_fix +buf_page_get_io_fix( +/*================*/ + /* out: io_fix state */ + const buf_page_t* bpage) /* in: pointer to the control block */ +{ + enum buf_io_fix io_fix = (enum buf_io_fix) bpage->io_fix; +#ifdef UNIV_DEBUG + switch (io_fix) { + case BUF_IO_NONE: + case BUF_IO_READ: + case BUF_IO_WRITE: + return(io_fix); + } + ut_error; +#endif /* UNIV_DEBUG */ + return(io_fix); +} + +/************************************************************************* +Gets the io_fix state of a block. */ +UNIV_INLINE +enum buf_io_fix +buf_block_get_io_fix( +/*================*/ + /* out: io_fix state */ + const buf_block_t* block) /* in: pointer to the control block */ +{ + return(buf_page_get_io_fix(&block->page)); +} + +/************************************************************************* +Sets the io_fix state of a block. */ +UNIV_INLINE +void +buf_page_set_io_fix( +/*================*/ + buf_page_t* bpage, /* in/out: control block */ + enum buf_io_fix io_fix) /* in: io_fix state */ +{ + ut_ad(buf_pool_mutex_own()); + ut_ad(mutex_own(buf_page_get_mutex(bpage))); + + bpage->io_fix = io_fix; + ut_ad(buf_page_get_io_fix(bpage) == io_fix); +} + +/************************************************************************* +Sets the io_fix state of a block. */ +UNIV_INLINE +void +buf_block_set_io_fix( +/*=================*/ + buf_block_t* block, /* in/out: control block */ + enum buf_io_fix io_fix) /* in: io_fix state */ +{ + buf_page_set_io_fix(&block->page, io_fix); +} + +/************************************************************************ +Determine if a buffer block can be relocated in memory. The block +can be dirty, but it must not be I/O-fixed or bufferfixed. */ +UNIV_INLINE +ibool +buf_page_can_relocate( +/*==================*/ + const buf_page_t* bpage) /* control block being relocated */ +{ + ut_ad(buf_pool_mutex_own()); + ut_ad(mutex_own(buf_page_get_mutex(bpage))); + ut_ad(buf_page_in_file(bpage)); + ut_ad(bpage->in_LRU_list); + + return(buf_page_get_io_fix(bpage) == BUF_IO_NONE + && bpage->buf_fix_count == 0); +} + +/************************************************************************* +Determine if a block has been flagged old. */ +UNIV_INLINE +ibool +buf_page_is_old( +/*============*/ + /* out: TRUE if old */ + const buf_page_t* bpage) /* in: control block */ +{ + ut_ad(buf_page_in_file(bpage)); + ut_ad(buf_pool_mutex_own()); + + return(bpage->old); +} + +/************************************************************************* +Flag a block old. */ +UNIV_INLINE +void +buf_page_set_old( +/*=============*/ + buf_page_t* bpage, /* in/out: control block */ + ibool old) /* in: old */ +{ + ut_a(buf_page_in_file(bpage)); + ut_ad(buf_pool_mutex_own()); + ut_ad(bpage->in_LRU_list); + +#ifdef UNIV_LRU_DEBUG + if (UT_LIST_GET_PREV(LRU, bpage) && UT_LIST_GET_NEXT(LRU, bpage) + && UT_LIST_GET_PREV(LRU, bpage)->old + == UT_LIST_GET_NEXT(LRU, bpage)->old) { + ut_a(UT_LIST_GET_PREV(LRU, bpage)->old == old); + } +#endif /* UNIV_LRU_DEBUG */ + + bpage->old = old; +} + +/************************************************************************* +Determine if a block has been accessed in the buffer pool. */ +UNIV_INLINE +ibool +buf_page_is_accessed( +/*=================*/ + /* out: TRUE if accessed */ + const buf_page_t* bpage) /* in: control block */ +{ + ut_ad(buf_page_in_file(bpage)); + + return(bpage->accessed); +} + +/************************************************************************* +Flag a block accessed. */ +UNIV_INLINE +void +buf_page_set_accessed( +/*==================*/ + buf_page_t* bpage, /* in/out: control block */ + ibool accessed) /* in: accessed */ +{ + ut_a(buf_page_in_file(bpage)); + ut_ad(mutex_own(buf_page_get_mutex(bpage))); + + bpage->accessed = accessed; +} + +/************************************************************************* +Gets the buf_block_t handle of a buffered file block if an uncompressed +page frame exists, or NULL. */ +UNIV_INLINE +buf_block_t* +buf_page_get_block( +/*===============*/ + /* out: control block, or NULL */ + buf_page_t* bpage) /* in: control block, or NULL */ +{ + if (UNIV_LIKELY(bpage != NULL)) { + ut_ad(buf_page_in_file(bpage)); + + if (buf_page_get_state(bpage) == BUF_BLOCK_FILE_PAGE) { + return((buf_block_t*) bpage); + } + } + + return(NULL); +} + +#ifdef UNIV_DEBUG +/************************************************************************* +Gets a pointer to the memory frame of a block. */ +UNIV_INLINE +buf_frame_t* +buf_block_get_frame( +/*================*/ + /* out: pointer to the frame */ + const buf_block_t* block) /* in: pointer to the control block */ +{ + ut_ad(block); + + switch (buf_block_get_state(block)) { + case BUF_BLOCK_ZIP_FREE: + case BUF_BLOCK_ZIP_PAGE: + case BUF_BLOCK_ZIP_DIRTY: + case BUF_BLOCK_NOT_USED: + ut_error; + break; + case BUF_BLOCK_FILE_PAGE: + ut_a(block->page.buf_fix_count > 0); + /* fall through */ + case BUF_BLOCK_READY_FOR_USE: + case BUF_BLOCK_MEMORY: + case BUF_BLOCK_REMOVE_HASH: + goto ok; + } + ut_error; +ok: + return((buf_frame_t*) block->frame); +} +#endif /* UNIV_DEBUG */ + +/************************************************************************* +Gets the space id of a block. */ +UNIV_INLINE +ulint +buf_page_get_space( +/*===============*/ + /* out: space id */ + const buf_page_t* bpage) /* in: pointer to the control block */ +{ + ut_ad(bpage); + ut_a(buf_page_in_file(bpage)); + + return(bpage->space); +} + +/************************************************************************* +Gets the space id of a block. */ +UNIV_INLINE +ulint +buf_block_get_space( +/*================*/ + /* out: space id */ + const buf_block_t* block) /* in: pointer to the control block */ +{ + ut_ad(block); + ut_a(buf_block_get_state(block) == BUF_BLOCK_FILE_PAGE); + + return(block->page.space); +} + +/************************************************************************* +Gets the page number of a block. */ +UNIV_INLINE +ulint +buf_page_get_page_no( +/*=================*/ + /* out: page number */ + const buf_page_t* bpage) /* in: pointer to the control block */ +{ + ut_ad(bpage); + ut_a(buf_page_in_file(bpage)); + + return(bpage->offset); +} + +/************************************************************************* +Gets the page number of a block. */ +UNIV_INLINE +ulint +buf_block_get_page_no( +/*==================*/ + /* out: page number */ + const buf_block_t* block) /* in: pointer to the control block */ +{ + ut_ad(block); + ut_a(buf_block_get_state(block) == BUF_BLOCK_FILE_PAGE); + + return(block->page.offset); +} + +/************************************************************************* +Gets the compressed page size of a block. */ +UNIV_INLINE +ulint +buf_page_get_zip_size( +/*==================*/ + /* out: compressed page size, or 0 */ + const buf_page_t* bpage) /* in: pointer to the control block */ +{ + return(bpage->zip.ssize ? 512 << bpage->zip.ssize : 0); +} + +/************************************************************************* +Gets the compressed page size of a block. */ +UNIV_INLINE +ulint +buf_block_get_zip_size( +/*===================*/ + /* out: compressed page size, or 0 */ + const buf_block_t* block) /* in: pointer to the control block */ +{ + return(block->page.zip.ssize ? 512 << block->page.zip.ssize : 0); +} + +#if defined UNIV_DEBUG || defined UNIV_ZIP_DEBUG +/************************************************************************* +Gets the compressed page descriptor corresponding to an uncompressed page +if applicable. */ +UNIV_INLINE +const page_zip_des_t* +buf_frame_get_page_zip( +/*===================*/ + /* out: compressed page descriptor, or NULL */ + const byte* ptr) /* in: pointer to the page */ +{ + return(buf_block_get_page_zip(buf_block_align(ptr))); +} +#endif /* UNIV_DEBUG || UNIV_ZIP_DEBUG */ + +/************************************************************************** +Gets the space id, page offset, and byte offset within page of a +pointer pointing to a buffer frame containing a file page. */ +UNIV_INLINE +void +buf_ptr_get_fsp_addr( +/*=================*/ + const void* ptr, /* in: pointer to a buffer frame */ + ulint* space, /* out: space id */ + fil_addr_t* addr) /* out: page offset and byte offset */ +{ + const page_t* page = (const page_t*) ut_align_down(ptr, + UNIV_PAGE_SIZE); + + *space = mach_read_from_4(page + FIL_PAGE_ARCH_LOG_NO_OR_SPACE_ID); + addr->page = mach_read_from_4(page + FIL_PAGE_OFFSET); + addr->boffset = ut_align_offset(ptr, UNIV_PAGE_SIZE); +} + +/************************************************************************** +Gets the hash value of the page the pointer is pointing to. This can be used +in searches in the lock hash table. */ +UNIV_INLINE +ulint +buf_block_get_lock_hash_val( +/*========================*/ + /* out: lock hash value */ + const buf_block_t* block) /* in: block */ +{ + return(block->lock_hash_val); +} + +/************************************************************************ +Allocates a buffer block. */ +UNIV_INLINE +buf_block_t* +buf_block_alloc( +/*============*/ + /* out, own: the allocated block, + in state BUF_BLOCK_MEMORY */ + ulint zip_size) /* in: compressed page size in bytes, + or 0 if uncompressed tablespace */ +{ + buf_block_t* block; + + block = buf_LRU_get_free_block(zip_size); + + buf_block_set_state(block, BUF_BLOCK_MEMORY); + + return(block); +} + +/************************************************************************ +Frees a buffer block which does not contain a file page. */ +UNIV_INLINE +void +buf_block_free( +/*===========*/ + buf_block_t* block) /* in, own: block to be freed */ +{ + buf_pool_mutex_enter(); + + mutex_enter(&block->mutex); + + ut_a(buf_block_get_state(block) != BUF_BLOCK_FILE_PAGE); + + buf_LRU_block_free_non_file_page(block); + + mutex_exit(&block->mutex); + + buf_pool_mutex_exit(); +} + +/************************************************************************* +Copies contents of a buffer frame to a given buffer. */ +UNIV_INLINE +byte* +buf_frame_copy( +/*===========*/ + /* out: buf */ + byte* buf, /* in: buffer to copy to */ + const buf_frame_t* frame) /* in: buffer frame */ +{ + ut_ad(buf && frame); + + ut_memcpy(buf, frame, UNIV_PAGE_SIZE); + + return(buf); +} + +/************************************************************************ +Calculates a folded value of a file page address to use in the page hash +table. */ +UNIV_INLINE +ulint +buf_page_address_fold( +/*==================*/ + /* out: the folded value */ + ulint space, /* in: space id */ + ulint offset) /* in: offset of the page within space */ +{ + return((space << 20) + space + offset); +} + +/************************************************************************ +This function is used to get info if there is an io operation +going on on a buffer page. */ +UNIV_INLINE +ibool +buf_page_io_query( +/*==============*/ + /* out: TRUE if io going on */ + buf_page_t* bpage) /* in: buf_pool block, must be bufferfixed */ +{ + ibool io_fixed; + + buf_pool_mutex_enter(); + + ut_ad(buf_page_in_file(bpage)); + ut_ad(bpage->buf_fix_count > 0); + + io_fixed = buf_page_get_io_fix(bpage) != BUF_IO_NONE; + buf_pool_mutex_exit(); + + return(io_fixed); +} + +/************************************************************************ +Gets the youngest modification log sequence number for a frame. +Returns zero if not file page or no modification occurred yet. */ +UNIV_INLINE +ib_uint64_t +buf_page_get_newest_modification( +/*=============================*/ + /* out: newest modification to page */ + const buf_page_t* bpage) /* in: block containing the + page frame */ +{ + ib_uint64_t lsn; + mutex_t* block_mutex = buf_page_get_mutex(bpage); + + mutex_enter(block_mutex); + + if (buf_page_in_file(bpage)) { + lsn = bpage->newest_modification; + } else { + lsn = 0; + } + + mutex_exit(block_mutex); + + return(lsn); +} + +/************************************************************************ +Increments the modify clock of a frame by 1. The caller must (1) own the +buf_pool mutex and block bufferfix count has to be zero, (2) or own an x-lock +on the block. */ +UNIV_INLINE +void +buf_block_modify_clock_inc( +/*=======================*/ + buf_block_t* block) /* in: block */ +{ +#ifdef UNIV_SYNC_DEBUG + ut_ad((buf_pool_mutex_own() + && (block->page.buf_fix_count == 0)) + || rw_lock_own(&(block->lock), RW_LOCK_EXCLUSIVE)); +#endif /* UNIV_SYNC_DEBUG */ + + block->modify_clock++; +} + +/************************************************************************ +Returns the value of the modify clock. The caller must have an s-lock +or x-lock on the block. */ +UNIV_INLINE +ib_uint64_t +buf_block_get_modify_clock( +/*=======================*/ + /* out: value */ + buf_block_t* block) /* in: block */ +{ +#ifdef UNIV_SYNC_DEBUG + ut_ad(rw_lock_own(&(block->lock), RW_LOCK_SHARED) + || rw_lock_own(&(block->lock), RW_LOCK_EXCLUSIVE)); +#endif /* UNIV_SYNC_DEBUG */ + + return(block->modify_clock); +} + +/*********************************************************************** +Increments the bufferfix count. */ +UNIV_INLINE +void +buf_block_buf_fix_inc_func( +/*=======================*/ +#ifdef UNIV_SYNC_DEBUG + const char* file, /* in: file name */ + ulint line, /* in: line */ +#endif /* UNIV_SYNC_DEBUG */ + buf_block_t* block) /* in: block to bufferfix */ +{ +#ifdef UNIV_SYNC_DEBUG + ibool ret; + + ret = rw_lock_s_lock_nowait(&(block->debug_latch), file, line); + ut_a(ret); +#endif /* UNIV_SYNC_DEBUG */ + ut_ad(mutex_own(&block->mutex)); + + block->page.buf_fix_count++; +} +#ifdef UNIV_SYNC_DEBUG +# define buf_block_buf_fix_inc(b,f,l) buf_block_buf_fix_inc_func(f,l,b) +#else /* UNIV_SYNC_DEBUG */ +# define buf_block_buf_fix_inc(b,f,l) buf_block_buf_fix_inc_func(b) +#endif /* UNIV_SYNC_DEBUG */ + +/*********************************************************************** +Decrements the bufferfix count. */ +UNIV_INLINE +void +buf_block_buf_fix_dec( +/*==================*/ + buf_block_t* block) /* in: block to bufferunfix */ +{ + ut_ad(mutex_own(&block->mutex)); + + block->page.buf_fix_count--; +#ifdef UNIV_SYNC_DEBUG + rw_lock_s_unlock(&block->debug_latch); +#endif +} + +/********************************************************************** +Returns the control block of a file page, NULL if not found. */ +UNIV_INLINE +buf_page_t* +buf_page_hash_get( +/*==============*/ + /* out: block, NULL if not found */ + ulint space, /* in: space id */ + ulint offset) /* in: offset of the page within space */ +{ + buf_page_t* bpage; + ulint fold; + + ut_ad(buf_pool); + ut_ad(buf_pool_mutex_own()); + + /* Look for the page in the hash table */ + + fold = buf_page_address_fold(space, offset); + + HASH_SEARCH(hash, buf_pool->page_hash, fold, buf_page_t*, bpage, + ut_ad(bpage->in_page_hash && !bpage->in_zip_hash + && buf_page_in_file(bpage)), + bpage->space == space && bpage->offset == offset); + if (bpage) { + ut_a(buf_page_in_file(bpage)); + ut_ad(bpage->in_page_hash); + ut_ad(!bpage->in_zip_hash); + UNIV_MEM_ASSERT_RW(bpage, sizeof *bpage); + } + + return(bpage); +} + +/********************************************************************** +Returns the control block of a file page, NULL if not found +or an uncompressed page frame does not exist. */ +UNIV_INLINE +buf_block_t* +buf_block_hash_get( +/*===============*/ + /* out: block, NULL if not found */ + ulint space, /* in: space id */ + ulint offset) /* in: offset of the page within space */ +{ + return(buf_page_get_block(buf_page_hash_get(space, offset))); +} + +/************************************************************************ +Returns TRUE if the page can be found in the buffer pool hash table. NOTE +that it is possible that the page is not yet read from disk, though. */ +UNIV_INLINE +ibool +buf_page_peek( +/*==========*/ + /* out: TRUE if found from page hash table, + NOTE that the page is not necessarily yet read + from disk! */ + ulint space, /* in: space id */ + ulint offset) /* in: page number */ +{ + const buf_page_t* bpage; + + buf_pool_mutex_enter(); + + bpage = buf_page_hash_get(space, offset); + + buf_pool_mutex_exit(); + + return(bpage != NULL); +} + +/************************************************************************ +Releases a compressed-only page acquired with buf_page_get_zip(). */ +UNIV_INLINE +void +buf_page_release_zip( +/*=================*/ + buf_page_t* bpage) /* in: buffer block */ +{ + buf_block_t* block; + + ut_ad(bpage); + ut_a(bpage->buf_fix_count > 0); + + switch (buf_page_get_state(bpage)) { + case BUF_BLOCK_ZIP_PAGE: + case BUF_BLOCK_ZIP_DIRTY: + mutex_enter(&buf_pool_zip_mutex); + bpage->buf_fix_count--; + mutex_exit(&buf_pool_zip_mutex); + return; + case BUF_BLOCK_FILE_PAGE: + block = (buf_block_t*) bpage; + mutex_enter(&block->mutex); +#ifdef UNIV_SYNC_DEBUG + rw_lock_s_unlock(&block->debug_latch); +#endif + bpage->buf_fix_count--; + mutex_exit(&block->mutex); + return; + case BUF_BLOCK_ZIP_FREE: + case BUF_BLOCK_NOT_USED: + case BUF_BLOCK_READY_FOR_USE: + case BUF_BLOCK_MEMORY: + case BUF_BLOCK_REMOVE_HASH: + break; + } + + ut_error; +} + +/************************************************************************ +Decrements the bufferfix count of a buffer control block and releases +a latch, if specified. */ +UNIV_INLINE +void +buf_page_release( +/*=============*/ + buf_block_t* block, /* in: buffer block */ + ulint rw_latch, /* in: RW_S_LATCH, RW_X_LATCH, + RW_NO_LATCH */ + mtr_t* mtr) /* in: mtr */ +{ + ut_ad(block); + + ut_a(buf_block_get_state(block) == BUF_BLOCK_FILE_PAGE); + ut_a(block->page.buf_fix_count > 0); + + if (rw_latch == RW_X_LATCH && mtr->modifications) { + buf_pool_mutex_enter(); + buf_flush_note_modification(block, mtr); + buf_pool_mutex_exit(); + } + + mutex_enter(&block->mutex); + +#ifdef UNIV_SYNC_DEBUG + rw_lock_s_unlock(&(block->debug_latch)); +#endif + block->page.buf_fix_count--; + + /* Dirty blocks should be in the flush list. */ + ut_ad(!block->page.oldest_modification + || block->page.in_flush_list); + + mutex_exit(&block->mutex); + + if (rw_latch == RW_S_LATCH) { + rw_lock_s_unlock(&(block->lock)); + } else if (rw_latch == RW_X_LATCH) { + rw_lock_x_unlock(&(block->lock)); + } +} + +#ifdef UNIV_SYNC_DEBUG +/************************************************************************* +Adds latch level info for the rw-lock protecting the buffer frame. This +should be called in the debug version after a successful latching of a +page if we know the latching order level of the acquired latch. */ +UNIV_INLINE +void +buf_block_dbg_add_level( +/*====================*/ + buf_block_t* block, /* in: buffer page + where we have acquired latch */ + ulint level) /* in: latching order level */ +{ + sync_thread_add_level(&block->lock, level); +} +#endif /* UNIV_SYNC_DEBUG */ === added file 'storage/xtradb/include/buf0flu.h' --- a/storage/xtradb/include/buf0flu.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/buf0flu.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,151 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +The database buffer pool flush algorithm + +Created 11/5/1995 Heikki Tuuri +*******************************************************/ + +#ifndef buf0flu_h +#define buf0flu_h + +#include "univ.i" +#include "buf0types.h" +#include "ut0byte.h" +#include "mtr0types.h" + +/************************************************************************ +Remove a block from the flush list of modified blocks. */ +UNIV_INTERN +void +buf_flush_remove( +/*=============*/ + buf_page_t* bpage); /* in: pointer to the block in question */ +/************************************************************************ +Updates the flush system data structures when a write is completed. */ +UNIV_INTERN +void +buf_flush_write_complete( +/*=====================*/ + buf_page_t* bpage); /* in: pointer to the block in question */ +/************************************************************************* +Flushes pages from the end of the LRU list if there is too small +a margin of replaceable pages there. */ +UNIV_INTERN +void +buf_flush_free_margin( +/*=======================*/ + ibool wait); +/************************************************************************ +Initializes a page for writing to the tablespace. */ +UNIV_INTERN +void +buf_flush_init_for_writing( +/*=======================*/ + byte* page, /* in/out: page */ + void* page_zip_, /* in/out: compressed page, or NULL */ + ib_uint64_t newest_lsn); /* in: newest modification lsn + to the page */ +/*********************************************************************** +This utility flushes dirty blocks from the end of the LRU list or flush_list. +NOTE 1: in the case of an LRU flush the calling thread may own latches to +pages: to avoid deadlocks, this function must be written so that it cannot +end up waiting for these latches! NOTE 2: in the case of a flush list flush, +the calling thread is not allowed to own any latches on pages! */ +UNIV_INTERN +ulint +buf_flush_batch( +/*============*/ + /* out: number of blocks for which the + write request was queued; + ULINT_UNDEFINED if there was a flush + of the same type already running */ + enum buf_flush flush_type, /* in: BUF_FLUSH_LRU or + BUF_FLUSH_LIST; if BUF_FLUSH_LIST, + then the caller must not own any + latches on pages */ + ulint min_n, /* in: wished minimum mumber of blocks + flushed (it is not guaranteed that the + actual number is that big, though) */ + ib_uint64_t lsn_limit); /* in the case BUF_FLUSH_LIST all + blocks whose oldest_modification is + smaller than this should be flushed + (if their number does not exceed + min_n), otherwise ignored */ +/********************************************************************** +Waits until a flush batch of the given type ends */ +UNIV_INTERN +void +buf_flush_wait_batch_end( +/*=====================*/ + enum buf_flush type); /* in: BUF_FLUSH_LRU or BUF_FLUSH_LIST */ +/************************************************************************ +This function should be called at a mini-transaction commit, if a page was +modified in it. Puts the block to the list of modified blocks, if it not +already in it. */ +UNIV_INLINE +void +buf_flush_note_modification( +/*========================*/ + buf_block_t* block, /* in: block which is modified */ + mtr_t* mtr); /* in: mtr */ +/************************************************************************ +This function should be called when recovery has modified a buffer page. */ +UNIV_INLINE +void +buf_flush_recv_note_modification( +/*=============================*/ + buf_block_t* block, /* in: block which is modified */ + ib_uint64_t start_lsn, /* in: start lsn of the first mtr in a + set of mtr's */ + ib_uint64_t end_lsn); /* in: end lsn of the last mtr in the + set of mtr's */ +/************************************************************************ +Returns TRUE if the file page block is immediately suitable for replacement, +i.e., transition FILE_PAGE => NOT_USED allowed. */ +UNIV_INTERN +ibool +buf_flush_ready_for_replace( +/*========================*/ + /* out: TRUE if can replace immediately */ + buf_page_t* bpage); /* in: buffer control block, must be + buf_page_in_file(bpage) and in the LRU list */ +#if defined UNIV_DEBUG || defined UNIV_BUF_DEBUG +/********************************************************************** +Validates the flush list. */ +UNIV_INTERN +ibool +buf_flush_validate(void); +/*====================*/ + /* out: TRUE if ok */ +#endif /* UNIV_DEBUG || UNIV_BUF_DEBUG */ + +/* When buf_flush_free_margin is called, it tries to make this many blocks +available to replacement in the free list and at the end of the LRU list (to +make sure that a read-ahead batch can be read efficiently in a single +sweep). */ + +#define BUF_FLUSH_FREE_BLOCK_MARGIN (5 + BUF_READ_AHEAD_AREA) +#define BUF_FLUSH_EXTRA_MARGIN (BUF_FLUSH_FREE_BLOCK_MARGIN / 4 + 100) + +#ifndef UNIV_NONINL +#include "buf0flu.ic" +#endif + +#endif === added file 'storage/xtradb/include/buf0flu.ic' --- a/storage/xtradb/include/buf0flu.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/buf0flu.ic 2009-05-04 02:45:47 +0000 @@ -0,0 +1,120 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +The database buffer pool flush algorithm + +Created 11/5/1995 Heikki Tuuri +*******************************************************/ + +#include "buf0buf.h" +#include "mtr0mtr.h" + +/************************************************************************ +Inserts a modified block into the flush list. */ +UNIV_INTERN +void +buf_flush_insert_into_flush_list( +/*=============================*/ + buf_block_t* block); /* in/out: block which is modified */ +/************************************************************************ +Inserts a modified block into the flush list in the right sorted position. +This function is used by recovery, because there the modifications do not +necessarily come in the order of lsn's. */ +UNIV_INTERN +void +buf_flush_insert_sorted_into_flush_list( +/*====================================*/ + buf_block_t* block); /* in/out: block which is modified */ + +/************************************************************************ +This function should be called at a mini-transaction commit, if a page was +modified in it. Puts the block to the list of modified blocks, if it is not +already in it. */ +UNIV_INLINE +void +buf_flush_note_modification( +/*========================*/ + buf_block_t* block, /* in: block which is modified */ + mtr_t* mtr) /* in: mtr */ +{ + ut_ad(block); + ut_ad(buf_block_get_state(block) == BUF_BLOCK_FILE_PAGE); + ut_ad(block->page.buf_fix_count > 0); +#ifdef UNIV_SYNC_DEBUG + ut_ad(rw_lock_own(&(block->lock), RW_LOCK_EX)); +#endif /* UNIV_SYNC_DEBUG */ + ut_ad(buf_pool_mutex_own()); + + ut_ad(mtr->start_lsn != 0); + ut_ad(mtr->modifications); + ut_ad(block->page.newest_modification <= mtr->end_lsn); + + block->page.newest_modification = mtr->end_lsn; + + if (!block->page.oldest_modification) { + + block->page.oldest_modification = mtr->start_lsn; + ut_ad(block->page.oldest_modification != 0); + + buf_flush_insert_into_flush_list(block); + } else { + ut_ad(block->page.oldest_modification <= mtr->start_lsn); + } + + ++srv_buf_pool_write_requests; +} + +/************************************************************************ +This function should be called when recovery has modified a buffer page. */ +UNIV_INLINE +void +buf_flush_recv_note_modification( +/*=============================*/ + buf_block_t* block, /* in: block which is modified */ + ib_uint64_t start_lsn, /* in: start lsn of the first mtr in a + set of mtr's */ + ib_uint64_t end_lsn) /* in: end lsn of the last mtr in the + set of mtr's */ +{ + ut_ad(block); + ut_ad(buf_block_get_state(block) == BUF_BLOCK_FILE_PAGE); + ut_ad(block->page.buf_fix_count > 0); +#ifdef UNIV_SYNC_DEBUG + ut_ad(rw_lock_own(&(block->lock), RW_LOCK_EX)); +#endif /* UNIV_SYNC_DEBUG */ + + buf_pool_mutex_enter(); + + ut_ad(block->page.newest_modification <= end_lsn); + + block->page.newest_modification = end_lsn; + + if (!block->page.oldest_modification) { + + block->page.oldest_modification = start_lsn; + + ut_ad(block->page.oldest_modification != 0); + + buf_flush_insert_sorted_into_flush_list(block); + } else { + ut_ad(block->page.oldest_modification <= start_lsn); + } + + buf_pool_mutex_exit(); +} === added file 'storage/xtradb/include/buf0lru.h' --- a/storage/xtradb/include/buf0lru.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/buf0lru.h 2009-05-04 02:45:47 +0000 @@ -0,0 +1,265 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +The database buffer pool LRU replacement algorithm + +Created 11/5/1995 Heikki Tuuri +*******************************************************/ + +#ifndef buf0lru_h +#define buf0lru_h + +#include "univ.i" +#include "ut0byte.h" +#include "buf0types.h" + +/** The return type of buf_LRU_free_block() */ +enum buf_lru_free_block_status { + /** freed */ + BUF_LRU_FREED = 0, + /** not freed because the caller asked to remove the + uncompressed frame but the control block cannot be + relocated */ + BUF_LRU_CANNOT_RELOCATE, + /** not freed because of some other reason */ + BUF_LRU_NOT_FREED +}; + +/********************************************************************** +Tries to remove LRU flushed blocks from the end of the LRU list and put them +to the free list. This is beneficial for the efficiency of the insert buffer +operation, as flushed pages from non-unique non-clustered indexes are here +taken out of the buffer pool, and their inserts redirected to the insert +buffer. Otherwise, the flushed blocks could get modified again before read +operations need new buffer blocks, and the i/o work done in flushing would be +wasted. */ +UNIV_INTERN +void +buf_LRU_try_free_flushed_blocks(void); +/*==================================*/ +/********************************************************************** +Returns TRUE if less than 25 % of the buffer pool is available. This can be +used in heuristics to prevent huge transactions eating up the whole buffer +pool for their locks. */ +UNIV_INTERN +ibool +buf_LRU_buf_pool_running_out(void); +/*==============================*/ + /* out: TRUE if less than 25 % of buffer pool + left */ + +/*####################################################################### +These are low-level functions +#########################################################################*/ + +/* Minimum LRU list length for which the LRU_old pointer is defined */ + +#define BUF_LRU_OLD_MIN_LEN 80 + +#define BUF_LRU_FREE_SEARCH_LEN (5 + 2 * BUF_READ_AHEAD_AREA) + +/********************************************************************** +Invalidates all pages belonging to a given tablespace when we are deleting +the data file(s) of that tablespace. A PROBLEM: if readahead is being started, +what guarantees that it will not try to read in pages after this operation has +completed? */ +UNIV_INTERN +void +buf_LRU_invalidate_tablespace( +/*==========================*/ + ulint id); /* in: space id */ +/********************************************************************** +Gets the minimum LRU_position field for the blocks in an initial segment +(determined by BUF_LRU_INITIAL_RATIO) of the LRU list. The limit is not +guaranteed to be precise, because the ulint_clock may wrap around. */ +UNIV_INTERN +ulint +buf_LRU_get_recent_limit(void); +/*==========================*/ + /* out: the limit; zero if could not determine it */ +/************************************************************************ +Insert a compressed block into buf_pool->zip_clean in the LRU order. */ +UNIV_INTERN +void +buf_LRU_insert_zip_clean( +/*=====================*/ + buf_page_t* bpage); /* in: pointer to the block in question */ + +/********************************************************************** +Try to free a block. If bpage is a descriptor of a compressed-only +page, the descriptor object will be freed as well. + +NOTE: If this function returns BUF_LRU_FREED, it will not temporarily +release buf_pool_mutex. Furthermore, the page frame will no longer be +accessible via bpage. + +The caller must hold buf_pool_mutex and buf_page_get_mutex(bpage) and +release these two mutexes after the call. No other +buf_page_get_mutex() may be held when calling this function. */ +UNIV_INTERN +enum buf_lru_free_block_status +buf_LRU_free_block( +/*===============*/ + /* out: BUF_LRU_FREED if freed, + BUF_LRU_CANNOT_RELOCATE or + BUF_LRU_NOT_FREED otherwise. */ + buf_page_t* bpage, /* in: block to be freed */ + ibool zip, /* in: TRUE if should remove also the + compressed page of an uncompressed page */ + ibool* buf_pool_mutex_released); + /* in: pointer to a variable that will + be assigned TRUE if buf_pool_mutex + was temporarily released, or NULL */ +/********************************************************************** +Try to free a replaceable block. */ +UNIV_INTERN +ibool +buf_LRU_search_and_free_block( +/*==========================*/ + /* out: TRUE if found and freed */ + ulint n_iterations); /* in: how many times this has been called + repeatedly without result: a high value means + that we should search farther; if + n_iterations < 10, then we search + n_iterations / 10 * buf_pool->curr_size + pages from the end of the LRU list; if + n_iterations < 5, then we will also search + n_iterations / 5 of the unzip_LRU list. */ +/********************************************************************** +Returns a free block from the buf_pool. The block is taken off the +free list. If it is empty, returns NULL. */ +UNIV_INTERN +buf_block_t* +buf_LRU_get_free_only(void); +/*=======================*/ + /* out: a free control block, or NULL + if the buf_block->free list is empty */ +/********************************************************************** +Returns a free block from the buf_pool. The block is taken off the +free list. If it is empty, blocks are moved from the end of the +LRU list to the free list. */ +UNIV_INTERN +buf_block_t* +buf_LRU_get_free_block( +/*===================*/ + /* out: the free control block, + in state BUF_BLOCK_READY_FOR_USE */ + ulint zip_size); /* in: compressed page size in bytes, + or 0 if uncompressed tablespace */ + +/********************************************************************** +Puts a block back to the free list. */ +UNIV_INTERN +void +buf_LRU_block_free_non_file_page( +/*=============================*/ + buf_block_t* block); /* in: block, must not contain a file page */ +/********************************************************************** +Adds a block to the LRU list. */ +UNIV_INTERN +void +buf_LRU_add_block( +/*==============*/ + buf_page_t* bpage, /* in: control block */ + ibool old); /* in: TRUE if should be put to the old + blocks in the LRU list, else put to the + start; if the LRU list is very short, added to + the start regardless of this parameter */ +/********************************************************************** +Adds a block to the LRU list of decompressed zip pages. */ +UNIV_INTERN +void +buf_unzip_LRU_add_block( +/*====================*/ + buf_block_t* block, /* in: control block */ + ibool old); /* in: TRUE if should be put to the end + of the list, else put to the start */ +/********************************************************************** +Moves a block to the start of the LRU list. */ +UNIV_INTERN +void +buf_LRU_make_block_young( +/*=====================*/ + buf_page_t* bpage); /* in: control block */ +/********************************************************************** +Moves a block to the end of the LRU list. */ +UNIV_INTERN +void +buf_LRU_make_block_old( +/*===================*/ + buf_page_t* bpage); /* in: control block */ +/************************************************************************ +Update the historical stats that we are collecting for LRU eviction +policy at the end of each interval. */ +UNIV_INTERN +void +buf_LRU_stat_update(void); +/*=====================*/ + +#if defined UNIV_DEBUG || defined UNIV_BUF_DEBUG +/************************************************************************** +Validates the LRU list. */ +UNIV_INTERN +ibool +buf_LRU_validate(void); +/*==================*/ +#endif /* UNIV_DEBUG || UNIV_BUF_DEBUG */ +#if defined UNIV_DEBUG_PRINT || defined UNIV_DEBUG || defined UNIV_BUF_DEBUG +/************************************************************************** +Prints the LRU list. */ +UNIV_INTERN +void +buf_LRU_print(void); +/*===============*/ +#endif /* UNIV_DEBUG_PRINT || UNIV_DEBUG || UNIV_BUF_DEBUG */ + +/********************************************************************** +These statistics are not 'of' LRU but 'for' LRU. We keep count of I/O +and page_zip_decompress() operations. Based on the statistics we decide +if we want to evict from buf_pool->unzip_LRU or buf_pool->LRU. */ + +/** Statistics for selecting the LRU list for eviction. */ +struct buf_LRU_stat_struct +{ + ulint io; /**< Counter of buffer pool I/O operations. */ + ulint unzip; /**< Counter of page_zip_decompress operations. */ +}; + +typedef struct buf_LRU_stat_struct buf_LRU_stat_t; + +/** Current operation counters. Not protected by any mutex. +Cleared by buf_LRU_stat_update(). */ +extern buf_LRU_stat_t buf_LRU_stat_cur; + +/** Running sum of past values of buf_LRU_stat_cur. +Updated by buf_LRU_stat_update(). Protected by buf_pool_mutex. */ +extern buf_LRU_stat_t buf_LRU_stat_sum; + +/************************************************************************ +Increments the I/O counter in buf_LRU_stat_cur. */ +#define buf_LRU_stat_inc_io() buf_LRU_stat_cur.io++ +/************************************************************************ +Increments the page_zip_decompress() counter in buf_LRU_stat_cur. */ +#define buf_LRU_stat_inc_unzip() buf_LRU_stat_cur.unzip++ + +#ifndef UNIV_NONINL +#include "buf0lru.ic" +#endif + +#endif === added file 'storage/xtradb/include/buf0lru.ic' --- a/storage/xtradb/include/buf0lru.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/buf0lru.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,24 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +The database buffer replacement algorithm + +Created 11/5/1995 Heikki Tuuri +*******************************************************/ + === added file 'storage/xtradb/include/buf0rea.h' --- a/storage/xtradb/include/buf0rea.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/buf0rea.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,136 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +The database buffer read + +Created 11/5/1995 Heikki Tuuri +*******************************************************/ + +#ifndef buf0rea_h +#define buf0rea_h + +#include "univ.i" +#include "buf0types.h" + +/************************************************************************ +High-level function which reads a page asynchronously from a file to the +buffer buf_pool if it is not already there. Sets the io_fix flag and sets +an exclusive lock on the buffer frame. The flag is cleared and the x-lock +released by the i/o-handler thread. Does a random read-ahead if it seems +sensible. */ +UNIV_INTERN +ulint +buf_read_page( +/*==========*/ + /* out: number of page read requests issued: this can + be > 1 if read-ahead occurred */ + ulint space, /* in: space id */ + ulint zip_size,/* in: compressed page size in bytes, or 0 */ + ulint offset);/* in: page number */ +/************************************************************************ +Applies linear read-ahead if in the buf_pool the page is a border page of +a linear read-ahead area and all the pages in the area have been accessed. +Does not read any page if the read-ahead mechanism is not activated. Note +that the the algorithm looks at the 'natural' adjacent successor and +predecessor of the page, which on the leaf level of a B-tree are the next +and previous page in the chain of leaves. To know these, the page specified +in (space, offset) must already be present in the buf_pool. Thus, the +natural way to use this function is to call it when a page in the buf_pool +is accessed the first time, calling this function just after it has been +bufferfixed. +NOTE 1: as this function looks at the natural predecessor and successor +fields on the page, what happens, if these are not initialized to any +sensible value? No problem, before applying read-ahead we check that the +area to read is within the span of the space, if not, read-ahead is not +applied. An uninitialized value may result in a useless read operation, but +only very improbably. +NOTE 2: the calling thread may own latches on pages: to avoid deadlocks this +function must be written such that it cannot end up waiting for these +latches! +NOTE 3: the calling thread must want access to the page given: this rule is +set to prevent unintended read-aheads performed by ibuf routines, a situation +which could result in a deadlock if the OS does not support asynchronous io. */ +UNIV_INTERN +ulint +buf_read_ahead_linear( +/*==================*/ + /* out: number of page read requests issued */ + ulint space, /* in: space id */ + ulint zip_size,/* in: compressed page size in bytes, or 0 */ + ulint offset);/* in: page number of a page; NOTE: the current thread + must want access to this page (see NOTE 3 above) */ +/************************************************************************ +Issues read requests for pages which the ibuf module wants to read in, in +order to contract the insert buffer tree. Technically, this function is like +a read-ahead function. */ +UNIV_INTERN +void +buf_read_ibuf_merge_pages( +/*======================*/ + ibool sync, /* in: TRUE if the caller + wants this function to wait + for the highest address page + to get read in, before this + function returns */ + const ulint* space_ids, /* in: array of space ids */ + const ib_int64_t* space_versions,/* in: the spaces must have + this version number + (timestamp), otherwise we + discard the read; we use this + to cancel reads if DISCARD + + IMPORT may have changed the + tablespace size */ + const ulint* page_nos, /* in: array of page numbers + to read, with the highest page + number the last in the + array */ + ulint n_stored); /* in: number of elements + in the arrays */ +/************************************************************************ +Issues read requests for pages which recovery wants to read in. */ +UNIV_INTERN +void +buf_read_recv_pages( +/*================*/ + ibool sync, /* in: TRUE if the caller + wants this function to wait + for the highest address page + to get read in, before this + function returns */ + ulint space, /* in: space id */ + ulint zip_size, /* in: compressed page size in + bytes, or 0 */ + const ulint* page_nos, /* in: array of page numbers + to read, with the highest page + number the last in the + array */ + ulint n_stored); /* in: number of page numbers + in the array */ + +/* The size in pages of the area which the read-ahead algorithms read if +invoked */ + +#define BUF_READ_AHEAD_AREA \ + ut_min(64, ut_2_power_up(buf_pool->curr_size / 32)) + +/* Modes used in read-ahead */ +#define BUF_READ_IBUF_PAGES_ONLY 131 +#define BUF_READ_ANY_PAGE 132 + +#endif === added file 'storage/xtradb/include/buf0types.h' --- a/storage/xtradb/include/buf0types.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/buf0types.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,70 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +The database buffer pool global types for the directory + +Created 11/17/1995 Heikki Tuuri +*******************************************************/ + +#ifndef buf0types_h +#define buf0types_h + +typedef struct buf_page_struct buf_page_t; +typedef struct buf_block_struct buf_block_t; +typedef struct buf_chunk_struct buf_chunk_t; +typedef struct buf_pool_struct buf_pool_t; + +/* The 'type' used of a buffer frame */ +typedef byte buf_frame_t; + +/* Flags for flush types */ +enum buf_flush { + BUF_FLUSH_LRU = 0, + BUF_FLUSH_SINGLE_PAGE, + BUF_FLUSH_LIST, + BUF_FLUSH_N_TYPES /* index of last element + 1 */ +}; + +/* Flags for io_fix types */ +enum buf_io_fix { + BUF_IO_NONE = 0, /**< no pending I/O */ + BUF_IO_READ, /**< read pending */ + BUF_IO_WRITE /**< write pending */ +}; + +/* Parameters of binary buddy system for compressed pages (buf0buddy.h) */ +#if UNIV_WORD_SIZE <= 4 /* 32-bit system */ +# define BUF_BUDDY_LOW_SHIFT 6 +#else /* 64-bit system */ +# define BUF_BUDDY_LOW_SHIFT 7 +#endif +#define BUF_BUDDY_LOW (1 << BUF_BUDDY_LOW_SHIFT) + /* minimum block size in the binary + buddy system; must be at least + sizeof(buf_page_t) */ +#define BUF_BUDDY_SIZES (UNIV_PAGE_SIZE_SHIFT - BUF_BUDDY_LOW_SHIFT) + /* number of buddy sizes */ + +/* twice the maximum block size of the buddy system; +the underlying memory is aligned by this amount: +this must be equal to UNIV_PAGE_SIZE */ +#define BUF_BUDDY_HIGH (BUF_BUDDY_LOW << BUF_BUDDY_SIZES) + +#endif + === added file 'storage/xtradb/include/data0data.h' --- a/storage/xtradb/include/data0data.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/data0data.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,480 @@ +/***************************************************************************** + +Copyright (c) 1994, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/************************************************************************ +SQL data field and tuple + +Created 5/30/1994 Heikki Tuuri +*************************************************************************/ + +#ifndef data0data_h +#define data0data_h + +#include "univ.i" + +#include "data0types.h" +#include "data0type.h" +#include "mem0mem.h" +#include "dict0types.h" + +typedef struct big_rec_struct big_rec_t; + +#ifdef UNIV_DEBUG +/************************************************************************* +Gets pointer to the type struct of SQL data field. */ +UNIV_INLINE +dtype_t* +dfield_get_type( +/*============*/ + /* out: pointer to the type struct */ + const dfield_t* field); /* in: SQL data field */ +/************************************************************************* +Gets pointer to the data in a field. */ +UNIV_INLINE +void* +dfield_get_data( +/*============*/ + /* out: pointer to data */ + const dfield_t* field); /* in: field */ +#else /* UNIV_DEBUG */ +# define dfield_get_type(field) (&(field)->type) +# define dfield_get_data(field) ((field)->data) +#endif /* UNIV_DEBUG */ +/************************************************************************* +Sets the type struct of SQL data field. */ +UNIV_INLINE +void +dfield_set_type( +/*============*/ + dfield_t* field, /* in: SQL data field */ + dtype_t* type); /* in: pointer to data type struct */ +/************************************************************************* +Gets length of field data. */ +UNIV_INLINE +ulint +dfield_get_len( +/*===========*/ + /* out: length of data; UNIV_SQL_NULL if + SQL null data */ + const dfield_t* field); /* in: field */ +/************************************************************************* +Sets length in a field. */ +UNIV_INLINE +void +dfield_set_len( +/*===========*/ + dfield_t* field, /* in: field */ + ulint len); /* in: length or UNIV_SQL_NULL */ +/************************************************************************* +Determines if a field is SQL NULL */ +UNIV_INLINE +ulint +dfield_is_null( +/*===========*/ + /* out: nonzero if SQL null data */ + const dfield_t* field); /* in: field */ +/************************************************************************* +Determines if a field is externally stored */ +UNIV_INLINE +ulint +dfield_is_ext( +/*==========*/ + /* out: nonzero if externally stored */ + const dfield_t* field); /* in: field */ +/************************************************************************* +Sets the "external storage" flag */ +UNIV_INLINE +void +dfield_set_ext( +/*===========*/ + dfield_t* field); /* in/out: field */ +/************************************************************************* +Sets pointer to the data and length in a field. */ +UNIV_INLINE +void +dfield_set_data( +/*============*/ + dfield_t* field, /* in: field */ + const void* data, /* in: data */ + ulint len); /* in: length or UNIV_SQL_NULL */ +/************************************************************************* +Sets a data field to SQL NULL. */ +UNIV_INLINE +void +dfield_set_null( +/*============*/ + dfield_t* field); /* in/out: field */ +/************************************************************************** +Writes an SQL null field full of zeros. */ +UNIV_INLINE +void +data_write_sql_null( +/*================*/ + byte* data, /* in: pointer to a buffer of size len */ + ulint len); /* in: SQL null size in bytes */ +/************************************************************************* +Copies the data and len fields. */ +UNIV_INLINE +void +dfield_copy_data( +/*=============*/ + dfield_t* field1, /* out: field to copy to */ + const dfield_t* field2);/* in: field to copy from */ +/************************************************************************* +Copies a data field to another. */ +UNIV_INLINE +void +dfield_copy( +/*========*/ + dfield_t* field1, /* out: field to copy to */ + const dfield_t* field2);/* in: field to copy from */ +/************************************************************************* +Copies the data pointed to by a data field. */ +UNIV_INLINE +void +dfield_dup( +/*=======*/ + dfield_t* field, /* in/out: data field */ + mem_heap_t* heap); /* in: memory heap where allocated */ +/************************************************************************* +Tests if data length and content is equal for two dfields. */ +UNIV_INLINE +ibool +dfield_datas_are_binary_equal( +/*==========================*/ + /* out: TRUE if equal */ + const dfield_t* field1, /* in: field */ + const dfield_t* field2);/* in: field */ +/************************************************************************* +Tests if dfield data length and content is equal to the given. */ +UNIV_INTERN +ibool +dfield_data_is_binary_equal( +/*========================*/ + /* out: TRUE if equal */ + const dfield_t* field, /* in: field */ + ulint len, /* in: data length or UNIV_SQL_NULL */ + const byte* data); /* in: data */ +/************************************************************************* +Gets number of fields in a data tuple. */ +UNIV_INLINE +ulint +dtuple_get_n_fields( +/*================*/ + /* out: number of fields */ + const dtuple_t* tuple); /* in: tuple */ +#ifdef UNIV_DEBUG +/************************************************************************* +Gets nth field of a tuple. */ +UNIV_INLINE +dfield_t* +dtuple_get_nth_field( +/*=================*/ + /* out: nth field */ + const dtuple_t* tuple, /* in: tuple */ + ulint n); /* in: index of field */ +#else /* UNIV_DEBUG */ +# define dtuple_get_nth_field(tuple, n) ((tuple)->fields + (n)) +#endif /* UNIV_DEBUG */ +/************************************************************************* +Gets info bits in a data tuple. */ +UNIV_INLINE +ulint +dtuple_get_info_bits( +/*=================*/ + /* out: info bits */ + const dtuple_t* tuple); /* in: tuple */ +/************************************************************************* +Sets info bits in a data tuple. */ +UNIV_INLINE +void +dtuple_set_info_bits( +/*=================*/ + dtuple_t* tuple, /* in: tuple */ + ulint info_bits); /* in: info bits */ +/************************************************************************* +Gets number of fields used in record comparisons. */ +UNIV_INLINE +ulint +dtuple_get_n_fields_cmp( +/*====================*/ + /* out: number of fields used in comparisons + in rem0cmp.* */ + const dtuple_t* tuple); /* in: tuple */ +/************************************************************************* +Gets number of fields used in record comparisons. */ +UNIV_INLINE +void +dtuple_set_n_fields_cmp( +/*====================*/ + dtuple_t* tuple, /* in: tuple */ + ulint n_fields_cmp); /* in: number of fields used in + comparisons in rem0cmp.* */ +/************************************************************** +Creates a data tuple to a memory heap. The default value for number +of fields used in record comparisons for this tuple is n_fields. */ +UNIV_INLINE +dtuple_t* +dtuple_create( +/*==========*/ + /* out, own: created tuple */ + mem_heap_t* heap, /* in: memory heap where the tuple + is created */ + ulint n_fields); /* in: number of fields */ + +/************************************************************** +Wrap data fields in a tuple. The default value for number +of fields used in record comparisons for this tuple is n_fields. */ +UNIV_INLINE +const dtuple_t* +dtuple_from_fields( +/*===============*/ + /* out: data tuple */ + dtuple_t* tuple, /* in: storage for data tuple */ + const dfield_t* fields, /* in: fields */ + ulint n_fields); /* in: number of fields */ + +/************************************************************************* +Sets number of fields used in a tuple. Normally this is set in +dtuple_create, but if you want later to set it smaller, you can use this. */ +UNIV_INTERN +void +dtuple_set_n_fields( +/*================*/ + dtuple_t* tuple, /* in: tuple */ + ulint n_fields); /* in: number of fields */ +/************************************************************************* +Copies a data tuple to another. This is a shallow copy; if a deep copy +is desired, dfield_dup() will have to be invoked on each field. */ +UNIV_INLINE +dtuple_t* +dtuple_copy( +/*========*/ + /* out, own: copy of tuple */ + const dtuple_t* tuple, /* in: tuple to copy from */ + mem_heap_t* heap); /* in: memory heap + where the tuple is created */ +/************************************************************** +The following function returns the sum of data lengths of a tuple. The space +occupied by the field structs or the tuple struct is not counted. */ +UNIV_INLINE +ulint +dtuple_get_data_size( +/*=================*/ + /* out: sum of data lens */ + const dtuple_t* tuple); /* in: typed data tuple */ +/************************************************************************* +Computes the number of externally stored fields in a data tuple. */ +UNIV_INLINE +ulint +dtuple_get_n_ext( +/*=============*/ + /* out: number of fields */ + const dtuple_t* tuple); /* in: tuple */ +/**************************************************************** +Compare two data tuples, respecting the collation of character fields. */ +UNIV_INTERN +int +dtuple_coll_cmp( +/*============*/ + /* out: 1, 0 , -1 if tuple1 is greater, equal, + less, respectively, than tuple2 */ + const dtuple_t* tuple1, /* in: tuple 1 */ + const dtuple_t* tuple2);/* in: tuple 2 */ +/**************************************************************** +Folds a prefix given as the number of fields of a tuple. */ +UNIV_INLINE +ulint +dtuple_fold( +/*========*/ + /* out: the folded value */ + const dtuple_t* tuple, /* in: the tuple */ + ulint n_fields,/* in: number of complete fields to fold */ + ulint n_bytes,/* in: number of bytes to fold in an + incomplete last field */ + dulint tree_id)/* in: index tree id */ + __attribute__((pure)); +/*********************************************************************** +Sets types of fields binary in a tuple. */ +UNIV_INLINE +void +dtuple_set_types_binary( +/*====================*/ + dtuple_t* tuple, /* in: data tuple */ + ulint n); /* in: number of fields to set */ +/************************************************************************** +Checks if a dtuple contains an SQL null value. */ +UNIV_INLINE +ibool +dtuple_contains_null( +/*=================*/ + /* out: TRUE if some field is SQL null */ + const dtuple_t* tuple); /* in: dtuple */ +/************************************************************** +Checks that a data field is typed. Asserts an error if not. */ +UNIV_INTERN +ibool +dfield_check_typed( +/*===============*/ + /* out: TRUE if ok */ + const dfield_t* field); /* in: data field */ +/************************************************************** +Checks that a data tuple is typed. Asserts an error if not. */ +UNIV_INTERN +ibool +dtuple_check_typed( +/*===============*/ + /* out: TRUE if ok */ + const dtuple_t* tuple); /* in: tuple */ +/************************************************************** +Checks that a data tuple is typed. */ +UNIV_INTERN +ibool +dtuple_check_typed_no_assert( +/*=========================*/ + /* out: TRUE if ok */ + const dtuple_t* tuple); /* in: tuple */ +#ifdef UNIV_DEBUG +/************************************************************** +Validates the consistency of a tuple which must be complete, i.e, +all fields must have been set. */ +UNIV_INTERN +ibool +dtuple_validate( +/*============*/ + /* out: TRUE if ok */ + const dtuple_t* tuple); /* in: tuple */ +#endif /* UNIV_DEBUG */ +/***************************************************************** +Pretty prints a dfield value according to its data type. */ +UNIV_INTERN +void +dfield_print( +/*=========*/ + const dfield_t* dfield);/* in: dfield */ +/***************************************************************** +Pretty prints a dfield value according to its data type. Also the hex string +is printed if a string contains non-printable characters. */ +UNIV_INTERN +void +dfield_print_also_hex( +/*==================*/ + const dfield_t* dfield); /* in: dfield */ +/************************************************************** +The following function prints the contents of a tuple. */ +UNIV_INTERN +void +dtuple_print( +/*=========*/ + FILE* f, /* in: output stream */ + const dtuple_t* tuple); /* in: tuple */ +/****************************************************************** +Moves parts of long fields in entry to the big record vector so that +the size of tuple drops below the maximum record size allowed in the +database. Moves data only from those fields which are not necessary +to determine uniquely the insertion place of the tuple in the index. */ +UNIV_INTERN +big_rec_t* +dtuple_convert_big_rec( +/*===================*/ + /* out, own: created big record vector, + NULL if we are not able to shorten + the entry enough, i.e., if there are + too many fixed-length or short fields + in entry or the index is clustered */ + dict_index_t* index, /* in: index */ + dtuple_t* entry, /* in/out: index entry */ + ulint* n_ext); /* in/out: number of + externally stored columns */ +/****************************************************************** +Puts back to entry the data stored in vector. Note that to ensure the +fields in entry can accommodate the data, vector must have been created +from entry with dtuple_convert_big_rec. */ +UNIV_INTERN +void +dtuple_convert_back_big_rec( +/*========================*/ + dict_index_t* index, /* in: index */ + dtuple_t* entry, /* in: entry whose data was put to vector */ + big_rec_t* vector);/* in, own: big rec vector; it is + freed in this function */ +/****************************************************************** +Frees the memory in a big rec vector. */ +UNIV_INLINE +void +dtuple_big_rec_free( +/*================*/ + big_rec_t* vector); /* in, own: big rec vector; it is + freed in this function */ + +/*######################################################################*/ + +/* Structure for an SQL data field */ +struct dfield_struct{ + void* data; /* pointer to data */ + unsigned ext:1; /* TRUE=externally stored, FALSE=local */ + unsigned len:32; /* data length; UNIV_SQL_NULL if SQL null */ + dtype_t type; /* type of data */ +}; + +struct dtuple_struct { + ulint info_bits; /* info bits of an index record: + the default is 0; this field is used + if an index record is built from + a data tuple */ + ulint n_fields; /* number of fields in dtuple */ + ulint n_fields_cmp; /* number of fields which should + be used in comparison services + of rem0cmp.*; the index search + is performed by comparing only these + fields, others are ignored; the + default value in dtuple creation is + the same value as n_fields */ + dfield_t* fields; /* fields */ + UT_LIST_NODE_T(dtuple_t) tuple_list; + /* data tuples can be linked into a + list using this field */ +#ifdef UNIV_DEBUG + ulint magic_n; +# define DATA_TUPLE_MAGIC_N 65478679 +#endif /* UNIV_DEBUG */ +}; + +/* A slot for a field in a big rec vector */ + +typedef struct big_rec_field_struct big_rec_field_t; +struct big_rec_field_struct { + ulint field_no; /* field number in record */ + ulint len; /* stored data len */ + const void* data; /* stored data */ +}; + +/* Storage format for overflow data in a big record, that is, a record +which needs external storage of data fields */ + +struct big_rec_struct { + mem_heap_t* heap; /* memory heap from which allocated */ + ulint n_fields; /* number of stored fields */ + big_rec_field_t* fields; /* stored fields */ +}; + +#ifndef UNIV_NONINL +#include "data0data.ic" +#endif + +#endif === added file 'storage/xtradb/include/data0data.ic' --- a/storage/xtradb/include/data0data.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/data0data.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,608 @@ +/***************************************************************************** + +Copyright (c) 1994, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/************************************************************************ +SQL data field and tuple + +Created 5/30/1994 Heikki Tuuri +*************************************************************************/ + +#include "mem0mem.h" +#include "ut0rnd.h" + +#ifdef UNIV_DEBUG +extern byte data_error; + +/************************************************************************* +Gets pointer to the type struct of SQL data field. */ +UNIV_INLINE +dtype_t* +dfield_get_type( +/*============*/ + /* out: pointer to the type struct */ + const dfield_t* field) /* in: SQL data field */ +{ + ut_ad(field); + + return((dtype_t*) &(field->type)); +} +#endif /* UNIV_DEBUG */ + +/************************************************************************* +Sets the type struct of SQL data field. */ +UNIV_INLINE +void +dfield_set_type( +/*============*/ + dfield_t* field, /* in: SQL data field */ + dtype_t* type) /* in: pointer to data type struct */ +{ + ut_ad(field && type); + + field->type = *type; +} + +#ifdef UNIV_DEBUG +/************************************************************************* +Gets pointer to the data in a field. */ +UNIV_INLINE +void* +dfield_get_data( +/*============*/ + /* out: pointer to data */ + const dfield_t* field) /* in: field */ +{ + ut_ad(field); + ut_ad((field->len == UNIV_SQL_NULL) + || (field->data != &data_error)); + + return((void*) field->data); +} +#endif /* UNIV_DEBUG */ + +/************************************************************************* +Gets length of field data. */ +UNIV_INLINE +ulint +dfield_get_len( +/*===========*/ + /* out: length of data; UNIV_SQL_NULL if + SQL null data */ + const dfield_t* field) /* in: field */ +{ + ut_ad(field); + ut_ad((field->len == UNIV_SQL_NULL) + || (field->data != &data_error)); + + return(field->len); +} + +/************************************************************************* +Sets length in a field. */ +UNIV_INLINE +void +dfield_set_len( +/*===========*/ + dfield_t* field, /* in: field */ + ulint len) /* in: length or UNIV_SQL_NULL */ +{ + ut_ad(field); +#ifdef UNIV_VALGRIND_DEBUG + if (len != UNIV_SQL_NULL) UNIV_MEM_ASSERT_RW(field->data, len); +#endif /* UNIV_VALGRIND_DEBUG */ + + field->ext = 0; + field->len = len; +} + +/************************************************************************* +Determines if a field is SQL NULL */ +UNIV_INLINE +ulint +dfield_is_null( +/*===========*/ + /* out: nonzero if SQL null data */ + const dfield_t* field) /* in: field */ +{ + ut_ad(field); + + return(field->len == UNIV_SQL_NULL); +} + +/************************************************************************* +Determines if a field is externally stored */ +UNIV_INLINE +ulint +dfield_is_ext( +/*==========*/ + /* out: nonzero if externally stored */ + const dfield_t* field) /* in: field */ +{ + ut_ad(field); + + return(UNIV_UNLIKELY(field->ext)); +} + +/************************************************************************* +Sets the "external storage" flag */ +UNIV_INLINE +void +dfield_set_ext( +/*===========*/ + dfield_t* field) /* in/out: field */ +{ + ut_ad(field); + + field->ext = 1; +} + +/************************************************************************* +Sets pointer to the data and length in a field. */ +UNIV_INLINE +void +dfield_set_data( +/*============*/ + dfield_t* field, /* in: field */ + const void* data, /* in: data */ + ulint len) /* in: length or UNIV_SQL_NULL */ +{ + ut_ad(field); + +#ifdef UNIV_VALGRIND_DEBUG + if (len != UNIV_SQL_NULL) UNIV_MEM_ASSERT_RW(data, len); +#endif /* UNIV_VALGRIND_DEBUG */ + field->data = (void*) data; + field->ext = 0; + field->len = len; +} + +/************************************************************************* +Sets a data field to SQL NULL. */ +UNIV_INLINE +void +dfield_set_null( +/*============*/ + dfield_t* field) /* in/out: field */ +{ + dfield_set_data(field, NULL, UNIV_SQL_NULL); +} + +/************************************************************************* +Copies the data and len fields. */ +UNIV_INLINE +void +dfield_copy_data( +/*=============*/ + dfield_t* field1, /* out: field to copy to */ + const dfield_t* field2) /* in: field to copy from */ +{ + ut_ad(field1 && field2); + + field1->data = field2->data; + field1->len = field2->len; + field1->ext = field2->ext; +} + +/************************************************************************* +Copies a data field to another. */ +UNIV_INLINE +void +dfield_copy( +/*========*/ + dfield_t* field1, /* out: field to copy to */ + const dfield_t* field2) /* in: field to copy from */ +{ + *field1 = *field2; +} + +/************************************************************************* +Copies the data pointed to by a data field. */ +UNIV_INLINE +void +dfield_dup( +/*=======*/ + dfield_t* field, /* in/out: data field */ + mem_heap_t* heap) /* in: memory heap where allocated */ +{ + if (!dfield_is_null(field)) { + UNIV_MEM_ASSERT_RW(field->data, field->len); + field->data = mem_heap_dup(heap, field->data, field->len); + } +} + +/************************************************************************* +Tests if data length and content is equal for two dfields. */ +UNIV_INLINE +ibool +dfield_datas_are_binary_equal( +/*==========================*/ + /* out: TRUE if equal */ + const dfield_t* field1, /* in: field */ + const dfield_t* field2) /* in: field */ +{ + ulint len; + + len = field1->len; + + return(len == field2->len + && (len == UNIV_SQL_NULL + || !memcmp(field1->data, field2->data, len))); +} + +/************************************************************************* +Gets info bits in a data tuple. */ +UNIV_INLINE +ulint +dtuple_get_info_bits( +/*=================*/ + /* out: info bits */ + const dtuple_t* tuple) /* in: tuple */ +{ + ut_ad(tuple); + + return(tuple->info_bits); +} + +/************************************************************************* +Sets info bits in a data tuple. */ +UNIV_INLINE +void +dtuple_set_info_bits( +/*=================*/ + dtuple_t* tuple, /* in: tuple */ + ulint info_bits) /* in: info bits */ +{ + ut_ad(tuple); + + tuple->info_bits = info_bits; +} + +/************************************************************************* +Gets number of fields used in record comparisons. */ +UNIV_INLINE +ulint +dtuple_get_n_fields_cmp( +/*====================*/ + /* out: number of fields used in comparisons + in rem0cmp.* */ + const dtuple_t* tuple) /* in: tuple */ +{ + ut_ad(tuple); + + return(tuple->n_fields_cmp); +} + +/************************************************************************* +Sets number of fields used in record comparisons. */ +UNIV_INLINE +void +dtuple_set_n_fields_cmp( +/*====================*/ + dtuple_t* tuple, /* in: tuple */ + ulint n_fields_cmp) /* in: number of fields used in + comparisons in rem0cmp.* */ +{ + ut_ad(tuple); + ut_ad(n_fields_cmp <= tuple->n_fields); + + tuple->n_fields_cmp = n_fields_cmp; +} + +/************************************************************************* +Gets number of fields in a data tuple. */ +UNIV_INLINE +ulint +dtuple_get_n_fields( +/*================*/ + /* out: number of fields */ + const dtuple_t* tuple) /* in: tuple */ +{ + ut_ad(tuple); + + return(tuple->n_fields); +} + +#ifdef UNIV_DEBUG +/************************************************************************* +Gets nth field of a tuple. */ +UNIV_INLINE +dfield_t* +dtuple_get_nth_field( +/*=================*/ + /* out: nth field */ + const dtuple_t* tuple, /* in: tuple */ + ulint n) /* in: index of field */ +{ + ut_ad(tuple); + ut_ad(n < tuple->n_fields); + + return((dfield_t*) tuple->fields + n); +} +#endif /* UNIV_DEBUG */ + +/************************************************************** +Creates a data tuple to a memory heap. The default value for number +of fields used in record comparisons for this tuple is n_fields. */ +UNIV_INLINE +dtuple_t* +dtuple_create( +/*==========*/ + /* out, own: created tuple */ + mem_heap_t* heap, /* in: memory heap where the tuple + is created */ + ulint n_fields) /* in: number of fields */ +{ + dtuple_t* tuple; + + ut_ad(heap); + + tuple = (dtuple_t*) mem_heap_alloc(heap, sizeof(dtuple_t) + + n_fields * sizeof(dfield_t)); + tuple->info_bits = 0; + tuple->n_fields = n_fields; + tuple->n_fields_cmp = n_fields; + tuple->fields = (dfield_t*) &tuple[1]; + +#ifdef UNIV_DEBUG + tuple->magic_n = DATA_TUPLE_MAGIC_N; + + { /* In the debug version, initialize fields to an error value */ + ulint i; + + for (i = 0; i < n_fields; i++) { + dfield_t* field; + + field = dtuple_get_nth_field(tuple, i); + + dfield_set_len(field, UNIV_SQL_NULL); + field->data = &data_error; + dfield_get_type(field)->mtype = DATA_ERROR; + } + } + + UNIV_MEM_INVALID(tuple->fields, n_fields * sizeof *tuple->fields); +#endif + return(tuple); +} + +/************************************************************** +Wrap data fields in a tuple. The default value for number +of fields used in record comparisons for this tuple is n_fields. */ +UNIV_INLINE +const dtuple_t* +dtuple_from_fields( +/*===============*/ + /* out: data tuple */ + dtuple_t* tuple, /* in: storage for data tuple */ + const dfield_t* fields, /* in: fields */ + ulint n_fields) /* in: number of fields */ +{ + tuple->info_bits = 0; + tuple->n_fields = tuple->n_fields_cmp = n_fields; + tuple->fields = (dfield_t*) fields; + ut_d(tuple->magic_n = DATA_TUPLE_MAGIC_N); + + return(tuple); +} + +/************************************************************************* +Copies a data tuple to another. This is a shallow copy; if a deep copy +is desired, dfield_dup() will have to be invoked on each field. */ +UNIV_INLINE +dtuple_t* +dtuple_copy( +/*========*/ + /* out, own: copy of tuple */ + const dtuple_t* tuple, /* in: tuple to copy from */ + mem_heap_t* heap) /* in: memory heap + where the tuple is created */ +{ + ulint n_fields = dtuple_get_n_fields(tuple); + dtuple_t* new_tuple = dtuple_create(heap, n_fields); + ulint i; + + for (i = 0; i < n_fields; i++) { + dfield_copy(dtuple_get_nth_field(new_tuple, i), + dtuple_get_nth_field(tuple, i)); + } + + return(new_tuple); +} + +/************************************************************** +The following function returns the sum of data lengths of a tuple. The space +occupied by the field structs or the tuple struct is not counted. Neither +is possible space in externally stored parts of the field. */ +UNIV_INLINE +ulint +dtuple_get_data_size( +/*=================*/ + /* out: sum of data lengths */ + const dtuple_t* tuple) /* in: typed data tuple */ +{ + const dfield_t* field; + ulint n_fields; + ulint len; + ulint i; + ulint sum = 0; + + ut_ad(tuple); + ut_ad(dtuple_check_typed(tuple)); + ut_ad(tuple->magic_n == DATA_TUPLE_MAGIC_N); + + n_fields = tuple->n_fields; + + for (i = 0; i < n_fields; i++) { + field = dtuple_get_nth_field(tuple, i); + len = dfield_get_len(field); + + if (len == UNIV_SQL_NULL) { + len = dtype_get_sql_null_size(dfield_get_type(field)); + } + + sum += len; + } + + return(sum); +} + +/************************************************************************* +Computes the number of externally stored fields in a data tuple. */ +UNIV_INLINE +ulint +dtuple_get_n_ext( +/*=============*/ + /* out: number of externally stored fields */ + const dtuple_t* tuple) /* in: tuple */ +{ + ulint n_ext = 0; + ulint n_fields = tuple->n_fields; + ulint i; + + ut_ad(tuple); + ut_ad(dtuple_check_typed(tuple)); + ut_ad(tuple->magic_n == DATA_TUPLE_MAGIC_N); + + for (i = 0; i < n_fields; i++) { + n_ext += dtuple_get_nth_field(tuple, i)->ext; + } + + return(n_ext); +} + +/*********************************************************************** +Sets types of fields binary in a tuple. */ +UNIV_INLINE +void +dtuple_set_types_binary( +/*====================*/ + dtuple_t* tuple, /* in: data tuple */ + ulint n) /* in: number of fields to set */ +{ + dtype_t* dfield_type; + ulint i; + + for (i = 0; i < n; i++) { + dfield_type = dfield_get_type(dtuple_get_nth_field(tuple, i)); + dtype_set(dfield_type, DATA_BINARY, 0, 0); + } +} + +/**************************************************************** +Folds a prefix given as the number of fields of a tuple. */ +UNIV_INLINE +ulint +dtuple_fold( +/*========*/ + /* out: the folded value */ + const dtuple_t* tuple, /* in: the tuple */ + ulint n_fields,/* in: number of complete fields to fold */ + ulint n_bytes,/* in: number of bytes to fold in an + incomplete last field */ + dulint tree_id)/* in: index tree id */ +{ + const dfield_t* field; + ulint i; + const byte* data; + ulint len; + ulint fold; + + ut_ad(tuple); + ut_ad(tuple->magic_n == DATA_TUPLE_MAGIC_N); + ut_ad(dtuple_check_typed(tuple)); + + fold = ut_fold_dulint(tree_id); + + for (i = 0; i < n_fields; i++) { + field = dtuple_get_nth_field(tuple, i); + + data = (const byte*) dfield_get_data(field); + len = dfield_get_len(field); + + if (len != UNIV_SQL_NULL) { + fold = ut_fold_ulint_pair(fold, + ut_fold_binary(data, len)); + } + } + + if (n_bytes > 0) { + field = dtuple_get_nth_field(tuple, i); + + data = (const byte*) dfield_get_data(field); + len = dfield_get_len(field); + + if (len != UNIV_SQL_NULL) { + if (len > n_bytes) { + len = n_bytes; + } + + fold = ut_fold_ulint_pair(fold, + ut_fold_binary(data, len)); + } + } + + return(fold); +} + +/************************************************************************** +Writes an SQL null field full of zeros. */ +UNIV_INLINE +void +data_write_sql_null( +/*================*/ + byte* data, /* in: pointer to a buffer of size len */ + ulint len) /* in: SQL null size in bytes */ +{ + memset(data, 0, len); +} + +/************************************************************************** +Checks if a dtuple contains an SQL null value. */ +UNIV_INLINE +ibool +dtuple_contains_null( +/*=================*/ + /* out: TRUE if some field is SQL null */ + const dtuple_t* tuple) /* in: dtuple */ +{ + ulint n; + ulint i; + + n = dtuple_get_n_fields(tuple); + + for (i = 0; i < n; i++) { + if (dfield_is_null(dtuple_get_nth_field(tuple, i))) { + + return(TRUE); + } + } + + return(FALSE); +} + +/****************************************************************** +Frees the memory in a big rec vector. */ +UNIV_INLINE +void +dtuple_big_rec_free( +/*================*/ + big_rec_t* vector) /* in, own: big rec vector; it is + freed in this function */ +{ + mem_heap_free(vector->heap); +} === added file 'storage/xtradb/include/data0type.h' --- a/storage/xtradb/include/data0type.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/data0type.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,471 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Data types + +Created 1/16/1996 Heikki Tuuri +*******************************************************/ + +#ifndef data0type_h +#define data0type_h + +#include "univ.i" + +extern ulint data_mysql_default_charset_coll; +#define DATA_MYSQL_LATIN1_SWEDISH_CHARSET_COLL 8 +#define DATA_MYSQL_BINARY_CHARSET_COLL 63 + +/* SQL data type struct */ +typedef struct dtype_struct dtype_t; + +/*-------------------------------------------*/ +/* The 'MAIN TYPE' of a column */ +#define DATA_VARCHAR 1 /* character varying of the + latin1_swedish_ci charset-collation; note + that the MySQL format for this, DATA_BINARY, + DATA_VARMYSQL, is also affected by whether the + 'precise type' contains + DATA_MYSQL_TRUE_VARCHAR */ +#define DATA_CHAR 2 /* fixed length character of the + latin1_swedish_ci charset-collation */ +#define DATA_FIXBINARY 3 /* binary string of fixed length */ +#define DATA_BINARY 4 /* binary string */ +#define DATA_BLOB 5 /* binary large object, or a TEXT type; + if prtype & DATA_BINARY_TYPE == 0, then this is + actually a TEXT column (or a BLOB created + with < 4.0.14; since column prefix indexes + came only in 4.0.14, the missing flag in BLOBs + created before that does not cause any harm) */ +#define DATA_INT 6 /* integer: can be any size 1 - 8 bytes */ +#define DATA_SYS_CHILD 7 /* address of the child page in node pointer */ +#define DATA_SYS 8 /* system column */ + +/* Data types >= DATA_FLOAT must be compared using the whole field, not as +binary strings */ + +#define DATA_FLOAT 9 +#define DATA_DOUBLE 10 +#define DATA_DECIMAL 11 /* decimal number stored as an ASCII string */ +#define DATA_VARMYSQL 12 /* any charset varying length char */ +#define DATA_MYSQL 13 /* any charset fixed length char */ + /* NOTE that 4.1.1 used DATA_MYSQL and + DATA_VARMYSQL for all character sets, and the + charset-collation for tables created with it + can also be latin1_swedish_ci */ +#define DATA_MTYPE_MAX 63 /* dtype_store_for_order_and_null_size() + requires the values are <= 63 */ +/*-------------------------------------------*/ +/* The 'PRECISE TYPE' of a column */ +/* +Tables created by a MySQL user have the following convention: + +- In the least significant byte in the precise type we store the MySQL type +code (not applicable for system columns). + +- In the second least significant byte we OR flags DATA_NOT_NULL, +DATA_UNSIGNED, DATA_BINARY_TYPE. + +- In the third least significant byte of the precise type of string types we +store the MySQL charset-collation code. In DATA_BLOB columns created with +< 4.0.14 we do not actually know if it is a BLOB or a TEXT column. Since there +are no indexes on prefixes of BLOB or TEXT columns in < 4.0.14, this is no +problem, though. + +Note that versions < 4.1.2 or < 5.0.1 did not store the charset code to the +precise type, since the charset was always the default charset of the MySQL +installation. If the stored charset code is 0 in the system table SYS_COLUMNS +of InnoDB, that means that the default charset of this MySQL installation +should be used. + +When loading a table definition from the system tables to the InnoDB data +dictionary cache in main memory, InnoDB versions >= 4.1.2 and >= 5.0.1 check +if the stored charset-collation is 0, and if that is the case and the type is +a non-binary string, replace that 0 by the default charset-collation code of +this MySQL installation. In short, in old tables, the charset-collation code +in the system tables on disk can be 0, but in in-memory data structures +(dtype_t), the charset-collation code is always != 0 for non-binary string +types. + +In new tables, in binary string types, the charset-collation code is the +MySQL code for the 'binary charset', that is, != 0. + +For binary string types and for DATA_CHAR, DATA_VARCHAR, and for those +DATA_BLOB which are binary or have the charset-collation latin1_swedish_ci, +InnoDB performs all comparisons internally, without resorting to the MySQL +comparison functions. This is to save CPU time. + +InnoDB's own internal system tables have different precise types for their +columns, and for them the precise type is usually not used at all. +*/ + +#define DATA_ENGLISH 4 /* English language character string: this + is a relic from pre-MySQL time and only used + for InnoDB's own system tables */ +#define DATA_ERROR 111 /* another relic from pre-MySQL time */ + +#define DATA_MYSQL_TYPE_MASK 255 /* AND with this mask to extract the MySQL + type from the precise type */ +#define DATA_MYSQL_TRUE_VARCHAR 15 /* MySQL type code for the >= 5.0.3 + format true VARCHAR */ + +/* Precise data types for system columns and the length of those columns; +NOTE: the values must run from 0 up in the order given! All codes must +be less than 256 */ +#define DATA_ROW_ID 0 /* row id: a dulint */ +#define DATA_ROW_ID_LEN 6 /* stored length for row id */ + +#define DATA_TRX_ID 1 /* transaction id: 6 bytes */ +#define DATA_TRX_ID_LEN 6 + +#define DATA_ROLL_PTR 2 /* rollback data pointer: 7 bytes */ +#define DATA_ROLL_PTR_LEN 7 + +#define DATA_N_SYS_COLS 3 /* number of system columns defined above */ + +#define DATA_SYS_PRTYPE_MASK 0xF /* mask to extract the above from prtype */ + +/* Flags ORed to the precise data type */ +#define DATA_NOT_NULL 256 /* this is ORed to the precise type when + the column is declared as NOT NULL */ +#define DATA_UNSIGNED 512 /* this id ORed to the precise type when + we have an unsigned integer type */ +#define DATA_BINARY_TYPE 1024 /* if the data type is a binary character + string, this is ORed to the precise type: + this only holds for tables created with + >= MySQL-4.0.14 */ +/* #define DATA_NONLATIN1 2048 This is a relic from < 4.1.2 and < 5.0.1. + In earlier versions this was set for some + BLOB columns. +*/ +#define DATA_LONG_TRUE_VARCHAR 4096 /* this is ORed to the precise data + type when the column is true VARCHAR where + MySQL uses 2 bytes to store the data len; + for shorter VARCHARs MySQL uses only 1 byte */ +/*-------------------------------------------*/ + +/* This many bytes we need to store the type information affecting the +alphabetical order for a single field and decide the storage size of an +SQL null*/ +#define DATA_ORDER_NULL_TYPE_BUF_SIZE 4 +/* In the >= 4.1.x storage format we add 2 bytes more so that we can also +store the charset-collation number; one byte is left unused, though */ +#define DATA_NEW_ORDER_NULL_TYPE_BUF_SIZE 6 + +/************************************************************************* +Gets the MySQL type code from a dtype. */ +UNIV_INLINE +ulint +dtype_get_mysql_type( +/*=================*/ + /* out: MySQL type code; this is NOT an InnoDB + type code! */ + const dtype_t* type); /* in: type struct */ +/************************************************************************* +Determine how many bytes the first n characters of the given string occupy. +If the string is shorter than n characters, returns the number of bytes +the characters in the string occupy. */ +UNIV_INTERN +ulint +dtype_get_at_most_n_mbchars( +/*========================*/ + /* out: length of the prefix, + in bytes */ + ulint prtype, /* in: precise type */ + ulint mbminlen, /* in: minimum length of a + multi-byte character */ + ulint mbmaxlen, /* in: maximum length of a + multi-byte character */ + ulint prefix_len, /* in: length of the requested + prefix, in characters, multiplied by + dtype_get_mbmaxlen(dtype) */ + ulint data_len, /* in: length of str (in bytes) */ + const char* str); /* in: the string whose prefix + length is being determined */ +/************************************************************************* +Checks if a data main type is a string type. Also a BLOB is considered a +string type. */ +UNIV_INTERN +ibool +dtype_is_string_type( +/*=================*/ + /* out: TRUE if string type */ + ulint mtype); /* in: InnoDB main data type code: DATA_CHAR, ... */ +/************************************************************************* +Checks if a type is a binary string type. Note that for tables created with +< 4.0.14, we do not know if a DATA_BLOB column is a BLOB or a TEXT column. For +those DATA_BLOB columns this function currently returns FALSE. */ +UNIV_INTERN +ibool +dtype_is_binary_string_type( +/*========================*/ + /* out: TRUE if binary string type */ + ulint mtype, /* in: main data type */ + ulint prtype);/* in: precise type */ +/************************************************************************* +Checks if a type is a non-binary string type. That is, dtype_is_string_type is +TRUE and dtype_is_binary_string_type is FALSE. Note that for tables created +with < 4.0.14, we do not know if a DATA_BLOB column is a BLOB or a TEXT column. +For those DATA_BLOB columns this function currently returns TRUE. */ +UNIV_INTERN +ibool +dtype_is_non_binary_string_type( +/*============================*/ + /* out: TRUE if non-binary string type */ + ulint mtype, /* in: main data type */ + ulint prtype);/* in: precise type */ +/************************************************************************* +Sets a data type structure. */ +UNIV_INLINE +void +dtype_set( +/*======*/ + dtype_t* type, /* in: type struct to init */ + ulint mtype, /* in: main data type */ + ulint prtype, /* in: precise type */ + ulint len); /* in: precision of type */ +/************************************************************************* +Copies a data type structure. */ +UNIV_INLINE +void +dtype_copy( +/*=======*/ + dtype_t* type1, /* in: type struct to copy to */ + const dtype_t* type2); /* in: type struct to copy from */ +/************************************************************************* +Gets the SQL main data type. */ +UNIV_INLINE +ulint +dtype_get_mtype( +/*============*/ + const dtype_t* type); +/************************************************************************* +Gets the precise data type. */ +UNIV_INLINE +ulint +dtype_get_prtype( +/*=============*/ + const dtype_t* type); +/************************************************************************* +Compute the mbminlen and mbmaxlen members of a data type structure. */ +UNIV_INLINE +void +dtype_get_mblen( +/*============*/ + ulint mtype, /* in: main type */ + ulint prtype, /* in: precise type (and collation) */ + ulint* mbminlen, /* out: minimum length of a + multi-byte character */ + ulint* mbmaxlen); /* out: maximum length of a + multi-byte character */ +/************************************************************************* +Gets the MySQL charset-collation code for MySQL string types. */ +UNIV_INLINE +ulint +dtype_get_charset_coll( +/*===================*/ + ulint prtype);/* in: precise data type */ +/************************************************************************* +Forms a precise type from the < 4.1.2 format precise type plus the +charset-collation code. */ +UNIV_INTERN +ulint +dtype_form_prtype( +/*==============*/ + ulint old_prtype, /* in: the MySQL type code and the flags + DATA_BINARY_TYPE etc. */ + ulint charset_coll); /* in: MySQL charset-collation code */ +/************************************************************************* +Determines if a MySQL string type is a subset of UTF-8. This function +may return false negatives, in case further character-set collation +codes are introduced in MySQL later. */ +UNIV_INLINE +ibool +dtype_is_utf8( +/*==========*/ + /* out: TRUE if a subset of UTF-8 */ + ulint prtype);/* in: precise data type */ +/************************************************************************* +Gets the type length. */ +UNIV_INLINE +ulint +dtype_get_len( +/*==========*/ + const dtype_t* type); +/************************************************************************* +Gets the minimum length of a character, in bytes. */ +UNIV_INLINE +ulint +dtype_get_mbminlen( +/*===============*/ + /* out: minimum length of a char, in bytes, + or 0 if this is not a character type */ + const dtype_t* type); /* in: type */ +/************************************************************************* +Gets the maximum length of a character, in bytes. */ +UNIV_INLINE +ulint +dtype_get_mbmaxlen( +/*===============*/ + /* out: maximum length of a char, in bytes, + or 0 if this is not a character type */ + const dtype_t* type); /* in: type */ +/************************************************************************* +Gets the padding character code for the type. */ +UNIV_INLINE +ulint +dtype_get_pad_char( +/*===============*/ + /* out: padding character code, or + ULINT_UNDEFINED if no padding specified */ + ulint mtype, /* in: main type */ + ulint prtype); /* in: precise type */ +/*************************************************************************** +Returns the size of a fixed size data type, 0 if not a fixed size type. */ +UNIV_INLINE +ulint +dtype_get_fixed_size_low( +/*=====================*/ + /* out: fixed size, or 0 */ + ulint mtype, /* in: main type */ + ulint prtype, /* in: precise type */ + ulint len, /* in: length */ + ulint mbminlen, /* in: minimum length of a multibyte char */ + ulint mbmaxlen); /* in: maximum length of a multibyte char */ +/*************************************************************************** +Returns the minimum size of a data type. */ +UNIV_INLINE +ulint +dtype_get_min_size_low( +/*===================*/ + /* out: minimum size */ + ulint mtype, /* in: main type */ + ulint prtype, /* in: precise type */ + ulint len, /* in: length */ + ulint mbminlen, /* in: minimum length of a multibyte char */ + ulint mbmaxlen); /* in: maximum length of a multibyte char */ +/*************************************************************************** +Returns the maximum size of a data type. Note: types in system tables may be +incomplete and return incorrect information. */ +UNIV_INLINE +ulint +dtype_get_max_size_low( +/*===================*/ + /* out: maximum size */ + ulint mtype, /* in: main type */ + ulint len); /* in: length */ +/*************************************************************************** +Returns the ROW_FORMAT=REDUNDANT stored SQL NULL size of a type. +For fixed length types it is the fixed length of the type, otherwise 0. */ +UNIV_INLINE +ulint +dtype_get_sql_null_size( +/*====================*/ + /* out: SQL null storage size + in ROW_FORMAT=REDUNDANT */ + const dtype_t* type); /* in: type */ +/************************************************************************** +Reads to a type the stored information which determines its alphabetical +ordering and the storage size of an SQL NULL value. */ +UNIV_INLINE +void +dtype_read_for_order_and_null_size( +/*===============================*/ + dtype_t* type, /* in: type struct */ + const byte* buf); /* in: buffer for the stored order info */ +/************************************************************************** +Stores for a type the information which determines its alphabetical ordering +and the storage size of an SQL NULL value. This is the >= 4.1.x storage +format. */ +UNIV_INLINE +void +dtype_new_store_for_order_and_null_size( +/*====================================*/ + byte* buf, /* in: buffer for + DATA_NEW_ORDER_NULL_TYPE_BUF_SIZE + bytes where we store the info */ + const dtype_t* type, /* in: type struct */ + ulint prefix_len);/* in: prefix length to + replace type->len, or 0 */ +/************************************************************************** +Reads to a type the stored information which determines its alphabetical +ordering and the storage size of an SQL NULL value. This is the 4.1.x storage +format. */ +UNIV_INLINE +void +dtype_new_read_for_order_and_null_size( +/*===================================*/ + dtype_t* type, /* in: type struct */ + const byte* buf); /* in: buffer for stored type order info */ + +/************************************************************************* +Validates a data type structure. */ +UNIV_INTERN +ibool +dtype_validate( +/*===========*/ + /* out: TRUE if ok */ + const dtype_t* type); /* in: type struct to validate */ +/************************************************************************* +Prints a data type structure. */ +UNIV_INTERN +void +dtype_print( +/*========*/ + const dtype_t* type); /* in: type */ + +/* Structure for an SQL data type. +If you add fields to this structure, be sure to initialize them everywhere. +This structure is initialized in the following functions: +dtype_set() +dtype_read_for_order_and_null_size() +dtype_new_read_for_order_and_null_size() +sym_tab_add_null_lit() */ + +struct dtype_struct{ + unsigned mtype:8; /* main data type */ + unsigned prtype:24; /* precise type; MySQL data + type, charset code, flags to + indicate nullability, + signedness, whether this is a + binary string, whether this is + a true VARCHAR where MySQL + uses 2 bytes to store the length */ + + /* the remaining fields do not affect alphabetical ordering: */ + + unsigned len:16; /* length; for MySQL data this + is field->pack_length(), + except that for a >= 5.0.3 + type true VARCHAR this is the + maximum byte length of the + string data (in addition to + the string, MySQL uses 1 or 2 + bytes to store the string length) */ + + unsigned mbminlen:2; /* minimum length of a + character, in bytes */ + unsigned mbmaxlen:3; /* maximum length of a + character, in bytes */ +}; + +#ifndef UNIV_NONINL +#include "data0type.ic" +#endif + +#endif === added file 'storage/xtradb/include/data0type.ic' --- a/storage/xtradb/include/data0type.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/data0type.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,587 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Data types + +Created 1/16/1996 Heikki Tuuri +*******************************************************/ + +#include "mach0data.h" +#include "ha_prototypes.h" + +/************************************************************************* +Gets the MySQL charset-collation code for MySQL string types. */ +UNIV_INLINE +ulint +dtype_get_charset_coll( +/*===================*/ + ulint prtype) /* in: precise data type */ +{ + return((prtype >> 16) & 0xFFUL); +} + +/************************************************************************* +Determines if a MySQL string type is a subset of UTF-8. This function +may return false negatives, in case further character-set collation +codes are introduced in MySQL later. */ +UNIV_INLINE +ibool +dtype_is_utf8( +/*==========*/ + /* out: TRUE if a subset of UTF-8 */ + ulint prtype) /* in: precise data type */ +{ + /* These codes have been copied from strings/ctype-extra.c + and strings/ctype-utf8.c. */ + switch (dtype_get_charset_coll(prtype)) { + case 11: /* ascii_general_ci */ + case 65: /* ascii_bin */ + case 33: /* utf8_general_ci */ + case 83: /* utf8_bin */ + case 254: /* utf8_general_cs */ + return(TRUE); + } + + return(FALSE); +} + +/************************************************************************* +Gets the MySQL type code from a dtype. */ +UNIV_INLINE +ulint +dtype_get_mysql_type( +/*=================*/ + /* out: MySQL type code; this is NOT an InnoDB + type code! */ + const dtype_t* type) /* in: type struct */ +{ + return(type->prtype & 0xFFUL); +} + +/************************************************************************* +Compute the mbminlen and mbmaxlen members of a data type structure. */ +UNIV_INLINE +void +dtype_get_mblen( +/*============*/ + ulint mtype, /* in: main type */ + ulint prtype, /* in: precise type (and collation) */ + ulint* mbminlen, /* out: minimum length of a + multi-byte character */ + ulint* mbmaxlen) /* out: maximum length of a + multi-byte character */ +{ + if (dtype_is_string_type(mtype)) { +#ifndef UNIV_HOTBACKUP + innobase_get_cset_width(dtype_get_charset_coll(prtype), + mbminlen, mbmaxlen); + ut_ad(*mbminlen <= *mbmaxlen); + ut_ad(*mbminlen <= 2); /* mbminlen in dtype_t is 0..3 */ + ut_ad(*mbmaxlen < 1 << 3); /* mbmaxlen in dtype_t is 0..7 */ +#else /* !UNIV_HOTBACKUP */ + ut_a(mtype <= DATA_BINARY); + *mbminlen = *mbmaxlen = 1; +#endif /* !UNIV_HOTBACKUP */ + } else { + *mbminlen = *mbmaxlen = 0; + } +} + +/************************************************************************* +Compute the mbminlen and mbmaxlen members of a data type structure. */ +UNIV_INLINE +void +dtype_set_mblen( +/*============*/ + dtype_t* type) /* in/out: type */ +{ + ulint mbminlen; + ulint mbmaxlen; + + dtype_get_mblen(type->mtype, type->prtype, &mbminlen, &mbmaxlen); + type->mbminlen = mbminlen; + type->mbmaxlen = mbmaxlen; + + ut_ad(dtype_validate(type)); +} + +/************************************************************************* +Sets a data type structure. */ +UNIV_INLINE +void +dtype_set( +/*======*/ + dtype_t* type, /* in: type struct to init */ + ulint mtype, /* in: main data type */ + ulint prtype, /* in: precise type */ + ulint len) /* in: precision of type */ +{ + ut_ad(type); + ut_ad(mtype <= DATA_MTYPE_MAX); + + type->mtype = mtype; + type->prtype = prtype; + type->len = len; + + dtype_set_mblen(type); +} + +/************************************************************************* +Copies a data type structure. */ +UNIV_INLINE +void +dtype_copy( +/*=======*/ + dtype_t* type1, /* in: type struct to copy to */ + const dtype_t* type2) /* in: type struct to copy from */ +{ + *type1 = *type2; + + ut_ad(dtype_validate(type1)); +} + +/************************************************************************* +Gets the SQL main data type. */ +UNIV_INLINE +ulint +dtype_get_mtype( +/*============*/ + const dtype_t* type) +{ + ut_ad(type); + + return(type->mtype); +} + +/************************************************************************* +Gets the precise data type. */ +UNIV_INLINE +ulint +dtype_get_prtype( +/*=============*/ + const dtype_t* type) +{ + ut_ad(type); + + return(type->prtype); +} + +/************************************************************************* +Gets the type length. */ +UNIV_INLINE +ulint +dtype_get_len( +/*==========*/ + const dtype_t* type) +{ + ut_ad(type); + + return(type->len); +} + +/************************************************************************* +Gets the minimum length of a character, in bytes. */ +UNIV_INLINE +ulint +dtype_get_mbminlen( +/*===============*/ + /* out: minimum length of a char, in bytes, + or 0 if this is not a character type */ + const dtype_t* type) /* in: type */ +{ + ut_ad(type); + return(type->mbminlen); +} +/************************************************************************* +Gets the maximum length of a character, in bytes. */ +UNIV_INLINE +ulint +dtype_get_mbmaxlen( +/*===============*/ + /* out: maximum length of a char, in bytes, + or 0 if this is not a character type */ + const dtype_t* type) /* in: type */ +{ + ut_ad(type); + return(type->mbmaxlen); +} + +/************************************************************************* +Gets the padding character code for a type. */ +UNIV_INLINE +ulint +dtype_get_pad_char( +/*===============*/ + /* out: padding character code, or + ULINT_UNDEFINED if no padding specified */ + ulint mtype, /* in: main type */ + ulint prtype) /* in: precise type */ +{ + switch (mtype) { + case DATA_FIXBINARY: + case DATA_BINARY: + if (UNIV_UNLIKELY(dtype_get_charset_coll(prtype) + == DATA_MYSQL_BINARY_CHARSET_COLL)) { + /* Starting from 5.0.18, do not pad + VARBINARY or BINARY columns. */ + return(ULINT_UNDEFINED); + } + /* Fall through */ + case DATA_CHAR: + case DATA_VARCHAR: + case DATA_MYSQL: + case DATA_VARMYSQL: + /* Space is the padding character for all char and binary + strings, and starting from 5.0.3, also for TEXT strings. */ + + return(0x20); + case DATA_BLOB: + if (!(prtype & DATA_BINARY_TYPE)) { + return(0x20); + } + /* Fall through */ + default: + /* No padding specified */ + return(ULINT_UNDEFINED); + } +} + +/************************************************************************** +Stores for a type the information which determines its alphabetical ordering +and the storage size of an SQL NULL value. This is the >= 4.1.x storage +format. */ +UNIV_INLINE +void +dtype_new_store_for_order_and_null_size( +/*====================================*/ + byte* buf, /* in: buffer for + DATA_NEW_ORDER_NULL_TYPE_BUF_SIZE + bytes where we store the info */ + const dtype_t* type, /* in: type struct */ + ulint prefix_len)/* in: prefix length to + replace type->len, or 0 */ +{ +#if 6 != DATA_NEW_ORDER_NULL_TYPE_BUF_SIZE +#error "6 != DATA_NEW_ORDER_NULL_TYPE_BUF_SIZE" +#endif + ulint len; + + buf[0] = (byte)(type->mtype & 0xFFUL); + + if (type->prtype & DATA_BINARY_TYPE) { + buf[0] = buf[0] | 128; + } + + /* In versions < 4.1.2 we had: if (type->prtype & DATA_NONLATIN1) { + buf[0] = buf[0] | 64; + } + */ + + buf[1] = (byte)(type->prtype & 0xFFUL); + + len = prefix_len ? prefix_len : type->len; + + mach_write_to_2(buf + 2, len & 0xFFFFUL); + + ut_ad(dtype_get_charset_coll(type->prtype) < 256); + mach_write_to_2(buf + 4, dtype_get_charset_coll(type->prtype)); + + if (type->prtype & DATA_NOT_NULL) { + buf[4] |= 128; + } +} + +/************************************************************************** +Reads to a type the stored information which determines its alphabetical +ordering and the storage size of an SQL NULL value. This is the < 4.1.x +storage format. */ +UNIV_INLINE +void +dtype_read_for_order_and_null_size( +/*===============================*/ + dtype_t* type, /* in: type struct */ + const byte* buf) /* in: buffer for stored type order info */ +{ +#if 4 != DATA_ORDER_NULL_TYPE_BUF_SIZE +# error "4 != DATA_ORDER_NULL_TYPE_BUF_SIZE" +#endif + + type->mtype = buf[0] & 63; + type->prtype = buf[1]; + + if (buf[0] & 128) { + type->prtype = type->prtype | DATA_BINARY_TYPE; + } + + type->len = mach_read_from_2(buf + 2); + + type->prtype = dtype_form_prtype(type->prtype, + data_mysql_default_charset_coll); + dtype_set_mblen(type); +} + +/************************************************************************** +Reads to a type the stored information which determines its alphabetical +ordering and the storage size of an SQL NULL value. This is the >= 4.1.x +storage format. */ +UNIV_INLINE +void +dtype_new_read_for_order_and_null_size( +/*===================================*/ + dtype_t* type, /* in: type struct */ + const byte* buf) /* in: buffer for stored type order info */ +{ + ulint charset_coll; + +#if 6 != DATA_NEW_ORDER_NULL_TYPE_BUF_SIZE +#error "6 != DATA_NEW_ORDER_NULL_TYPE_BUF_SIZE" +#endif + + type->mtype = buf[0] & 63; + type->prtype = buf[1]; + + if (buf[0] & 128) { + type->prtype |= DATA_BINARY_TYPE; + } + + if (buf[4] & 128) { + type->prtype |= DATA_NOT_NULL; + } + + type->len = mach_read_from_2(buf + 2); + + charset_coll = mach_read_from_2(buf + 4) & 0x7fff; + + if (dtype_is_string_type(type->mtype)) { + ut_a(charset_coll < 256); + + if (charset_coll == 0) { + /* This insert buffer record was inserted with MySQL + version < 4.1.2, and the charset-collation code was not + explicitly stored to dtype->prtype at that time. It + must be the default charset-collation of this MySQL + installation. */ + + charset_coll = data_mysql_default_charset_coll; + } + + type->prtype = dtype_form_prtype(type->prtype, charset_coll); + } + dtype_set_mblen(type); +} + +/*************************************************************************** +Returns the size of a fixed size data type, 0 if not a fixed size type. */ +UNIV_INLINE +ulint +dtype_get_fixed_size_low( +/*=====================*/ + /* out: fixed size, or 0 */ + ulint mtype, /* in: main type */ + ulint prtype, /* in: precise type */ + ulint len, /* in: length */ + ulint mbminlen, /* in: minimum length of a multibyte char */ + ulint mbmaxlen) /* in: maximum length of a multibyte char */ +{ + switch (mtype) { + case DATA_SYS: +#ifdef UNIV_DEBUG + switch (prtype & DATA_MYSQL_TYPE_MASK) { + case DATA_ROW_ID: + ut_ad(len == DATA_ROW_ID_LEN); + break; + case DATA_TRX_ID: + ut_ad(len == DATA_TRX_ID_LEN); + break; + case DATA_ROLL_PTR: + ut_ad(len == DATA_ROLL_PTR_LEN); + break; + default: + ut_ad(0); + return(0); + } +#endif /* UNIV_DEBUG */ + case DATA_CHAR: + case DATA_FIXBINARY: + case DATA_INT: + case DATA_FLOAT: + case DATA_DOUBLE: + return(len); + case DATA_MYSQL: + if (prtype & DATA_BINARY_TYPE) { + return(len); + } else { +#ifdef UNIV_HOTBACKUP + if (mbminlen == mbmaxlen) { + return(len); + } +#else /* UNIV_HOTBACKUP */ + /* We play it safe here and ask MySQL for + mbminlen and mbmaxlen. Although + mbminlen and mbmaxlen are + initialized if and only if prtype + is (in one of the 3 functions in this file), + it could be that none of these functions + has been called. */ + + ulint i_mbminlen, i_mbmaxlen; + + innobase_get_cset_width( + dtype_get_charset_coll(prtype), + &i_mbminlen, &i_mbmaxlen); + + if (UNIV_UNLIKELY(mbminlen != i_mbminlen) + || UNIV_UNLIKELY(mbmaxlen != i_mbmaxlen)) { + + ut_print_timestamp(stderr); + fprintf(stderr, " InnoDB: " + "mbminlen=%lu, " + "mbmaxlen=%lu, " + "type->mbminlen=%lu, " + "type->mbmaxlen=%lu\n", + (ulong) i_mbminlen, + (ulong) i_mbmaxlen, + (ulong) mbminlen, + (ulong) mbmaxlen); + } + if (mbminlen == mbmaxlen) { + return(len); + } +#endif /* !UNIV_HOTBACKUP */ + } + /* fall through for variable-length charsets */ + case DATA_VARCHAR: + case DATA_BINARY: + case DATA_DECIMAL: + case DATA_VARMYSQL: + case DATA_BLOB: + return(0); + default: + ut_error; + } + + return(0); +} + +/*************************************************************************** +Returns the minimum size of a data type. */ +UNIV_INLINE +ulint +dtype_get_min_size_low( +/*===================*/ + /* out: minimum size */ + ulint mtype, /* in: main type */ + ulint prtype, /* in: precise type */ + ulint len, /* in: length */ + ulint mbminlen, /* in: minimum length of a multibyte char */ + ulint mbmaxlen) /* in: maximum length of a multibyte char */ +{ + switch (mtype) { + case DATA_SYS: +#ifdef UNIV_DEBUG + switch (prtype & DATA_MYSQL_TYPE_MASK) { + case DATA_ROW_ID: + ut_ad(len == DATA_ROW_ID_LEN); + break; + case DATA_TRX_ID: + ut_ad(len == DATA_TRX_ID_LEN); + break; + case DATA_ROLL_PTR: + ut_ad(len == DATA_ROLL_PTR_LEN); + break; + default: + ut_ad(0); + return(0); + } +#endif /* UNIV_DEBUG */ + case DATA_CHAR: + case DATA_FIXBINARY: + case DATA_INT: + case DATA_FLOAT: + case DATA_DOUBLE: + return(len); + case DATA_MYSQL: + if ((prtype & DATA_BINARY_TYPE) || mbminlen == mbmaxlen) { + return(len); + } + /* this is a variable-length character set */ + ut_a(mbminlen > 0); + ut_a(mbmaxlen > mbminlen); + ut_a(len % mbmaxlen == 0); + return(len * mbminlen / mbmaxlen); + case DATA_VARCHAR: + case DATA_BINARY: + case DATA_DECIMAL: + case DATA_VARMYSQL: + case DATA_BLOB: + return(0); + default: + ut_error; + } + + return(0); +} + +/*************************************************************************** +Returns the maximum size of a data type. Note: types in system tables may be +incomplete and return incorrect information. */ +UNIV_INLINE +ulint +dtype_get_max_size_low( +/*===================*/ + /* out: maximum size */ + ulint mtype, /* in: main type */ + ulint len) /* in: length */ +{ + switch (mtype) { + case DATA_SYS: + case DATA_CHAR: + case DATA_FIXBINARY: + case DATA_INT: + case DATA_FLOAT: + case DATA_DOUBLE: + case DATA_MYSQL: + case DATA_VARCHAR: + case DATA_BINARY: + case DATA_DECIMAL: + case DATA_VARMYSQL: + return(len); + case DATA_BLOB: + break; + default: + ut_error; + } + + return(ULINT_MAX); +} + +/*************************************************************************** +Returns the ROW_FORMAT=REDUNDANT stored SQL NULL size of a type. +For fixed length types it is the fixed length of the type, otherwise 0. */ +UNIV_INLINE +ulint +dtype_get_sql_null_size( +/*====================*/ + /* out: SQL null storage size + in ROW_FORMAT=REDUNDANT */ + const dtype_t* type) /* in: type */ +{ + return(dtype_get_fixed_size_low(type->mtype, type->prtype, type->len, + type->mbminlen, type->mbmaxlen)); +} === added file 'storage/xtradb/include/data0types.h' --- a/storage/xtradb/include/data0types.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/data0types.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,35 @@ +/***************************************************************************** + +Copyright (c) 2000, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/************************************************************************ +Some type definitions + +Created 9/21/2000 Heikki Tuuri +*************************************************************************/ + +#ifndef data0types_h +#define data0types_h + +/* SQL data field struct */ +typedef struct dfield_struct dfield_t; + +/* SQL data tuple struct */ +typedef struct dtuple_struct dtuple_t; + +#endif + === added file 'storage/xtradb/include/db0err.h' --- a/storage/xtradb/include/db0err.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/db0err.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,104 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Global error codes for the database + +Created 5/24/1996 Heikki Tuuri +*******************************************************/ + +#ifndef db0err_h +#define db0err_h + + +enum db_err { + DB_SUCCESS = 10, + + /* The following are error codes */ + DB_ERROR, + DB_OUT_OF_MEMORY, + DB_OUT_OF_FILE_SPACE, + DB_LOCK_WAIT, + DB_DEADLOCK, + DB_ROLLBACK, + DB_DUPLICATE_KEY, + DB_QUE_THR_SUSPENDED, + DB_MISSING_HISTORY, /* required history data has been + deleted due to lack of space in + rollback segment */ + DB_CLUSTER_NOT_FOUND = 30, + DB_TABLE_NOT_FOUND, + DB_MUST_GET_MORE_FILE_SPACE, /* the database has to be stopped + and restarted with more file space */ + DB_TABLE_IS_BEING_USED, + DB_TOO_BIG_RECORD, /* a record in an index would not fit + on a compressed page, or it would + become bigger than 1/2 free space in + an uncompressed page frame */ + DB_LOCK_WAIT_TIMEOUT, /* lock wait lasted too long */ + DB_NO_REFERENCED_ROW, /* referenced key value not found + for a foreign key in an insert or + update of a row */ + DB_ROW_IS_REFERENCED, /* cannot delete or update a row + because it contains a key value + which is referenced */ + DB_CANNOT_ADD_CONSTRAINT, /* adding a foreign key constraint + to a table failed */ + DB_CORRUPTION, /* data structure corruption noticed */ + DB_COL_APPEARS_TWICE_IN_INDEX, /* InnoDB cannot handle an index + where same column appears twice */ + DB_CANNOT_DROP_CONSTRAINT, /* dropping a foreign key constraint + from a table failed */ + DB_NO_SAVEPOINT, /* no savepoint exists with the given + name */ + DB_TABLESPACE_ALREADY_EXISTS, /* we cannot create a new single-table + tablespace because a file of the same + name already exists */ + DB_TABLESPACE_DELETED, /* tablespace does not exist or is + being dropped right now */ + DB_LOCK_TABLE_FULL, /* lock structs have exhausted the + buffer pool (for big transactions, + InnoDB stores the lock structs in the + buffer pool) */ + DB_FOREIGN_DUPLICATE_KEY, /* foreign key constraints + activated by the operation would + lead to a duplicate key in some + table */ + DB_TOO_MANY_CONCURRENT_TRXS, /* when InnoDB runs out of the + preconfigured undo slots, this can + only happen when there are too many + concurrent transactions */ + DB_UNSUPPORTED, /* when InnoDB sees any artefact or + a feature that it can't recoginize or + work with e.g., FT indexes created by + a later version of the engine. */ + + DB_PRIMARY_KEY_IS_NULL, /* a column in the PRIMARY KEY + was found to be NULL */ + + /* The following are partial failure codes */ + DB_FAIL = 1000, + DB_OVERFLOW, + DB_UNDERFLOW, + DB_STRONG_FAIL, + DB_ZIP_OVERFLOW, + DB_RECORD_NOT_FOUND = 1500, + DB_END_OF_INDEX +}; + +#endif === added file 'storage/xtradb/include/dict0boot.h' --- a/storage/xtradb/include/dict0boot.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/dict0boot.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,150 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Data dictionary creation and booting + +Created 4/18/1996 Heikki Tuuri +*******************************************************/ + +#ifndef dict0boot_h +#define dict0boot_h + +#include "univ.i" + +#include "mtr0mtr.h" +#include "mtr0log.h" +#include "ut0byte.h" +#include "buf0buf.h" +#include "fsp0fsp.h" +#include "dict0dict.h" + +typedef byte dict_hdr_t; + +/************************************************************************** +Gets a pointer to the dictionary header and x-latches its page. */ +UNIV_INTERN +dict_hdr_t* +dict_hdr_get( +/*=========*/ + /* out: pointer to the dictionary header, + page x-latched */ + mtr_t* mtr); /* in: mtr */ +/************************************************************************** +Returns a new row, table, index, or tree id. */ +UNIV_INTERN +dulint +dict_hdr_get_new_id( +/*================*/ + /* out: the new id */ + ulint type); /* in: DICT_HDR_ROW_ID, ... */ +/************************************************************************** +Returns a new row id. */ +UNIV_INLINE +dulint +dict_sys_get_new_row_id(void); +/*=========================*/ + /* out: the new id */ +/************************************************************************** +Reads a row id from a record or other 6-byte stored form. */ +UNIV_INLINE +dulint +dict_sys_read_row_id( +/*=================*/ + /* out: row id */ + byte* field); /* in: record field */ +/************************************************************************** +Writes a row id to a record or other 6-byte stored form. */ +UNIV_INLINE +void +dict_sys_write_row_id( +/*==================*/ + byte* field, /* in: record field */ + dulint row_id);/* in: row id */ +/********************************************************************* +Initializes the data dictionary memory structures when the database is +started. This function is also called when the data dictionary is created. */ +UNIV_INTERN +void +dict_boot(void); +/*===========*/ +/********************************************************************* +Creates and initializes the data dictionary at the database creation. */ +UNIV_INTERN +void +dict_create(void); +/*=============*/ + + +/* Space id and page no where the dictionary header resides */ +#define DICT_HDR_SPACE 0 /* the SYSTEM tablespace */ +#define DICT_HDR_PAGE_NO FSP_DICT_HDR_PAGE_NO + +/* The ids for the basic system tables and their indexes */ +#define DICT_TABLES_ID ut_dulint_create(0, 1) +#define DICT_COLUMNS_ID ut_dulint_create(0, 2) +#define DICT_INDEXES_ID ut_dulint_create(0, 3) +#define DICT_FIELDS_ID ut_dulint_create(0, 4) +/* The following is a secondary index on SYS_TABLES */ +#define DICT_TABLE_IDS_ID ut_dulint_create(0, 5) + +#define DICT_HDR_FIRST_ID 10 /* the ids for tables etc. start + from this number, except for basic + system tables and their above defined + indexes; ibuf tables and indexes are + assigned as the id the number + DICT_IBUF_ID_MIN plus the space id */ +#define DICT_IBUF_ID_MIN ut_dulint_create(0xFFFFFFFFUL, 0) + +/* The offset of the dictionary header on the page */ +#define DICT_HDR FSEG_PAGE_DATA + +/*-------------------------------------------------------------*/ +/* Dictionary header offsets */ +#define DICT_HDR_ROW_ID 0 /* The latest assigned row id */ +#define DICT_HDR_TABLE_ID 8 /* The latest assigned table id */ +#define DICT_HDR_INDEX_ID 16 /* The latest assigned index id */ +#define DICT_HDR_MIX_ID 24 /* Obsolete, always 0. */ +#define DICT_HDR_TABLES 32 /* Root of the table index tree */ +#define DICT_HDR_TABLE_IDS 36 /* Root of the table index tree */ +#define DICT_HDR_COLUMNS 40 /* Root of the column index tree */ +#define DICT_HDR_INDEXES 44 /* Root of the index index tree */ +#define DICT_HDR_FIELDS 48 /* Root of the index field + index tree */ + +#define DICT_HDR_FSEG_HEADER 56 /* Segment header for the tablespace + segment into which the dictionary + header is created */ +/*-------------------------------------------------------------*/ + +/* The field number of the page number field in the sys_indexes table +clustered index */ +#define DICT_SYS_INDEXES_PAGE_NO_FIELD 8 +#define DICT_SYS_INDEXES_SPACE_NO_FIELD 7 +#define DICT_SYS_INDEXES_TYPE_FIELD 6 + +/* When a row id which is zero modulo this number (which must be a power of +two) is assigned, the field DICT_HDR_ROW_ID on the dictionary header page is +updated */ +#define DICT_HDR_ROW_ID_WRITE_MARGIN 256 + +#ifndef UNIV_NONINL +#include "dict0boot.ic" +#endif + +#endif === added file 'storage/xtradb/include/dict0boot.ic' --- a/storage/xtradb/include/dict0boot.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/dict0boot.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,92 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Data dictionary creation and booting + +Created 4/18/1996 Heikki Tuuri +*******************************************************/ + +/************************************************************************** +Writes the current value of the row id counter to the dictionary header file +page. */ +UNIV_INTERN +void +dict_hdr_flush_row_id(void); +/*=======================*/ + + +/************************************************************************** +Returns a new row id. */ +UNIV_INLINE +dulint +dict_sys_get_new_row_id(void) +/*=========================*/ + /* out: the new id */ +{ + dulint id; + + mutex_enter(&(dict_sys->mutex)); + + id = dict_sys->row_id; + + if (0 == (ut_dulint_get_low(id) % DICT_HDR_ROW_ID_WRITE_MARGIN)) { + + dict_hdr_flush_row_id(); + } + + UT_DULINT_INC(dict_sys->row_id); + + mutex_exit(&(dict_sys->mutex)); + + return(id); +} + +/************************************************************************** +Reads a row id from a record or other 6-byte stored form. */ +UNIV_INLINE +dulint +dict_sys_read_row_id( +/*=================*/ + /* out: row id */ + byte* field) /* in: record field */ +{ +#if DATA_ROW_ID_LEN != 6 +# error "DATA_ROW_ID_LEN != 6" +#endif + + return(mach_read_from_6(field)); +} + +/************************************************************************** +Writes a row id to a record or other 6-byte stored form. */ +UNIV_INLINE +void +dict_sys_write_row_id( +/*==================*/ + byte* field, /* in: record field */ + dulint row_id) /* in: row id */ +{ +#if DATA_ROW_ID_LEN != 6 +# error "DATA_ROW_ID_LEN != 6" +#endif + + mach_write_to_6(field, row_id); +} + + === added file 'storage/xtradb/include/dict0crea.h' --- a/storage/xtradb/include/dict0crea.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/dict0crea.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,199 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Database object creation + +Created 1/8/1996 Heikki Tuuri +*******************************************************/ + +#ifndef dict0crea_h +#define dict0crea_h + +#include "univ.i" +#include "dict0types.h" +#include "dict0dict.h" +#include "que0types.h" +#include "row0types.h" +#include "mtr0mtr.h" + +/************************************************************************* +Creates a table create graph. */ +UNIV_INTERN +tab_node_t* +tab_create_graph_create( +/*====================*/ + /* out, own: table create node */ + dict_table_t* table, /* in: table to create, built as a memory data + structure */ + mem_heap_t* heap); /* in: heap where created */ +/************************************************************************* +Creates an index create graph. */ +UNIV_INTERN +ind_node_t* +ind_create_graph_create( +/*====================*/ + /* out, own: index create node */ + dict_index_t* index, /* in: index to create, built as a memory data + structure */ + mem_heap_t* heap); /* in: heap where created */ +/*************************************************************** +Creates a table. This is a high-level function used in SQL execution graphs. */ +UNIV_INTERN +que_thr_t* +dict_create_table_step( +/*===================*/ + /* out: query thread to run next or NULL */ + que_thr_t* thr); /* in: query thread */ +/*************************************************************** +Creates an index. This is a high-level function used in SQL execution +graphs. */ +UNIV_INTERN +que_thr_t* +dict_create_index_step( +/*===================*/ + /* out: query thread to run next or NULL */ + que_thr_t* thr); /* in: query thread */ +/*********************************************************************** +Truncates the index tree associated with a row in SYS_INDEXES table. */ +UNIV_INTERN +ulint +dict_truncate_index_tree( +/*=====================*/ + /* out: new root page number, or + FIL_NULL on failure */ + dict_table_t* table, /* in: the table the index belongs to */ + ulint space, /* in: 0=truncate, + nonzero=create the index tree in the + given tablespace */ + btr_pcur_t* pcur, /* in/out: persistent cursor pointing to + record in the clustered index of + SYS_INDEXES table. The cursor may be + repositioned in this call. */ + mtr_t* mtr); /* in: mtr having the latch + on the record page. The mtr may be + committed and restarted in this call. */ +/*********************************************************************** +Drops the index tree associated with a row in SYS_INDEXES table. */ +UNIV_INTERN +void +dict_drop_index_tree( +/*=================*/ + rec_t* rec, /* in/out: record in the clustered index + of SYS_INDEXES table */ + mtr_t* mtr); /* in: mtr having the latch on the record page */ +#ifndef UNIV_HOTBACKUP +/******************************************************************** +Creates the foreign key constraints system tables inside InnoDB +at database creation or database start if they are not found or are +not of the right form. */ +UNIV_INTERN +ulint +dict_create_or_check_foreign_constraint_tables(void); +/*================================================*/ + /* out: DB_SUCCESS or error code */ +/************************************************************************ +Adds foreign key definitions to data dictionary tables in the database. We +look at table->foreign_list, and also generate names to constraints that were +not named by the user. A generated constraint has a name of the format +databasename/tablename_ibfk_<number>, where the numbers start from 1, and are +given locally for this table, that is, the number is not global, as in the +old format constraints < 4.0.18 it used to be. */ +UNIV_INTERN +ulint +dict_create_add_foreigns_to_dictionary( +/*===================================*/ + /* out: error code or DB_SUCCESS */ + ulint start_id,/* in: if we are actually doing ALTER TABLE + ADD CONSTRAINT, we want to generate constraint + numbers which are bigger than in the table so + far; we number the constraints from + start_id + 1 up; start_id should be set to 0 if + we are creating a new table, or if the table + so far has no constraints for which the name + was generated here */ + dict_table_t* table, /* in: table */ + trx_t* trx); /* in: transaction */ +#endif /* !UNIV_HOTBACKUP */ + +/* Table create node structure */ + +struct tab_node_struct{ + que_common_t common; /* node type: QUE_NODE_TABLE_CREATE */ + dict_table_t* table; /* table to create, built as a memory data + structure with dict_mem_... functions */ + ins_node_t* tab_def; /* child node which does the insert of + the table definition; the row to be inserted + is built by the parent node */ + ins_node_t* col_def; /* child node which does the inserts of + the column definitions; the row to be inserted + is built by the parent node */ + commit_node_t* commit_node; + /* child node which performs a commit after + a successful table creation */ + /*----------------------*/ + /* Local storage for this graph node */ + ulint state; /* node execution state */ + ulint col_no; /* next column definition to insert */ + mem_heap_t* heap; /* memory heap used as auxiliary storage */ +}; + +/* Table create node states */ +#define TABLE_BUILD_TABLE_DEF 1 +#define TABLE_BUILD_COL_DEF 2 +#define TABLE_COMMIT_WORK 3 +#define TABLE_ADD_TO_CACHE 4 +#define TABLE_COMPLETED 5 + +/* Index create node struct */ + +struct ind_node_struct{ + que_common_t common; /* node type: QUE_NODE_INDEX_CREATE */ + dict_index_t* index; /* index to create, built as a memory data + structure with dict_mem_... functions */ + ins_node_t* ind_def; /* child node which does the insert of + the index definition; the row to be inserted + is built by the parent node */ + ins_node_t* field_def; /* child node which does the inserts of + the field definitions; the row to be inserted + is built by the parent node */ + commit_node_t* commit_node; + /* child node which performs a commit after + a successful index creation */ + /*----------------------*/ + /* Local storage for this graph node */ + ulint state; /* node execution state */ + ulint page_no;/* root page number of the index */ + dict_table_t* table; /* table which owns the index */ + dtuple_t* ind_row;/* index definition row built */ + ulint field_no;/* next field definition to insert */ + mem_heap_t* heap; /* memory heap used as auxiliary storage */ +}; + +/* Index create node states */ +#define INDEX_BUILD_INDEX_DEF 1 +#define INDEX_BUILD_FIELD_DEF 2 +#define INDEX_CREATE_INDEX_TREE 3 +#define INDEX_COMMIT_WORK 4 +#define INDEX_ADD_TO_CACHE 5 + +#ifndef UNIV_NONINL +#include "dict0crea.ic" +#endif + +#endif === added file 'storage/xtradb/include/dict0crea.ic' --- a/storage/xtradb/include/dict0crea.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/dict0crea.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,24 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Database object creation + +Created 1/8/1996 Heikki Tuuri +*******************************************************/ + === added file 'storage/xtradb/include/dict0dict.h' --- a/storage/xtradb/include/dict0dict.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/dict0dict.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,1147 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Data dictionary system + +Created 1/8/1996 Heikki Tuuri +*******************************************************/ + +#ifndef dict0dict_h +#define dict0dict_h + +#include "univ.i" +#include "dict0types.h" +#include "dict0mem.h" +#include "data0type.h" +#include "data0data.h" +#include "sync0sync.h" +#include "sync0rw.h" +#include "mem0mem.h" +#include "rem0types.h" +#include "ut0mem.h" +#include "ut0lst.h" +#include "hash0hash.h" +#include "ut0rnd.h" +#include "ut0byte.h" +#include "trx0types.h" + +#ifndef UNIV_HOTBACKUP +/********************************************************************** +Makes all characters in a NUL-terminated UTF-8 string lower case. */ +UNIV_INTERN +void +dict_casedn_str( +/*============*/ + char* a); /* in/out: string to put in lower case */ +#endif /* !UNIV_HOTBACKUP */ +/************************************************************************ +Get the database name length in a table name. */ +UNIV_INTERN +ulint +dict_get_db_name_len( +/*=================*/ + /* out: database name length */ + const char* name); /* in: table name in the form + dbname '/' tablename */ +/************************************************************************ +Return the end of table name where we have removed dbname and '/'. */ + +const char* +dict_remove_db_name( +/*================*/ + /* out: table name */ + const char* name); /* in: table name in the form + dbname '/' tablename */ +/************************************************************************** +Returns a table object based on table id. */ +UNIV_INTERN +dict_table_t* +dict_table_get_on_id( +/*=================*/ + /* out: table, NULL if does not exist */ + dulint table_id, /* in: table id */ + trx_t* trx); /* in: transaction handle */ +/************************************************************************ +Decrements the count of open MySQL handles to a table. */ +UNIV_INTERN +void +dict_table_decrement_handle_count( +/*==============================*/ + dict_table_t* table, /* in/out: table */ + ibool dict_locked); /* in: TRUE=data dictionary locked */ +/************************************************************************** +Inits the data dictionary module. */ +UNIV_INTERN +void +dict_init(void); +/*===========*/ +/************************************************************************ +Gets the space id of every table of the data dictionary and makes a linear +list and a hash table of them to the data dictionary cache. This function +can be called at database startup if we did not need to do a crash recovery. +In crash recovery we must scan the space id's from the .ibd files in MySQL +database directories. */ +UNIV_INTERN +void +dict_load_space_id_list(void); +/*=========================*/ +/************************************************************************* +Gets the column data type. */ +UNIV_INLINE +void +dict_col_copy_type( +/*===============*/ + const dict_col_t* col, /* in: column */ + dtype_t* type); /* out: data type */ +#ifdef UNIV_DEBUG +/************************************************************************* +Assert that a column and a data type match. */ +UNIV_INLINE +ibool +dict_col_type_assert_equal( +/*=======================*/ + /* out: TRUE */ + const dict_col_t* col, /* in: column */ + const dtype_t* type); /* in: data type */ +#endif /* UNIV_DEBUG */ +/*************************************************************************** +Returns the minimum size of the column. */ +UNIV_INLINE +ulint +dict_col_get_min_size( +/*==================*/ + /* out: minimum size */ + const dict_col_t* col); /* in: column */ +/*************************************************************************** +Returns the maximum size of the column. */ +UNIV_INLINE +ulint +dict_col_get_max_size( +/*==================*/ + /* out: maximum size */ + const dict_col_t* col); /* in: column */ +/*************************************************************************** +Returns the size of a fixed size column, 0 if not a fixed size column. */ +UNIV_INLINE +ulint +dict_col_get_fixed_size( +/*====================*/ + /* out: fixed size, or 0 */ + const dict_col_t* col); /* in: column */ +/*************************************************************************** +Returns the ROW_FORMAT=REDUNDANT stored SQL NULL size of a column. +For fixed length types it is the fixed length of the type, otherwise 0. */ +UNIV_INLINE +ulint +dict_col_get_sql_null_size( +/*=======================*/ + /* out: SQL null storage size + in ROW_FORMAT=REDUNDANT */ + const dict_col_t* col); /* in: column */ + +/************************************************************************* +Gets the column number. */ +UNIV_INLINE +ulint +dict_col_get_no( +/*============*/ + const dict_col_t* col); +/************************************************************************* +Gets the column position in the clustered index. */ +UNIV_INLINE +ulint +dict_col_get_clust_pos( +/*===================*/ + const dict_col_t* col, /* in: table column */ + const dict_index_t* clust_index); /* in: clustered index */ +/******************************************************************** +If the given column name is reserved for InnoDB system columns, return +TRUE. */ +UNIV_INTERN +ibool +dict_col_name_is_reserved( +/*======================*/ + /* out: TRUE if name is reserved */ + const char* name); /* in: column name */ +/************************************************************************ +Acquire the autoinc lock.*/ +UNIV_INTERN +void +dict_table_autoinc_lock( +/*====================*/ + dict_table_t* table); /* in/out: table */ +/************************************************************************ +Unconditionally set the autoinc counter. */ +UNIV_INTERN +void +dict_table_autoinc_initialize( +/*==========================*/ + dict_table_t* table, /* in/out: table */ + ib_uint64_t value); /* in: next value to assign to a row */ +/************************************************************************ +Reads the next autoinc value (== autoinc counter value), 0 if not yet +initialized. */ +UNIV_INTERN +ib_uint64_t +dict_table_autoinc_read( +/*====================*/ + /* out: value for a new row, or 0 */ + const dict_table_t* table); /* in: table */ +/************************************************************************ +Updates the autoinc counter if the value supplied is greater than the +current value. */ +UNIV_INTERN +void +dict_table_autoinc_update_if_greater( +/*=================================*/ + + dict_table_t* table, /* in/out: table */ + ib_uint64_t value); /* in: value which was assigned to a row */ +/************************************************************************ +Release the autoinc lock.*/ +UNIV_INTERN +void +dict_table_autoinc_unlock( +/*======================*/ + dict_table_t* table); /* in/out: table */ +/************************************************************************** +Adds system columns to a table object. */ +UNIV_INTERN +void +dict_table_add_system_columns( +/*==========================*/ + dict_table_t* table, /* in/out: table */ + mem_heap_t* heap); /* in: temporary heap */ +/************************************************************************** +Adds a table object to the dictionary cache. */ +UNIV_INTERN +void +dict_table_add_to_cache( +/*====================*/ + dict_table_t* table, /* in: table */ + mem_heap_t* heap); /* in: temporary heap */ +/************************************************************************** +Removes a table object from the dictionary cache. */ +UNIV_INTERN +void +dict_table_remove_from_cache( +/*=========================*/ + dict_table_t* table); /* in, own: table */ +/************************************************************************** +Renames a table object. */ +UNIV_INTERN +ibool +dict_table_rename_in_cache( +/*=======================*/ + /* out: TRUE if success */ + dict_table_t* table, /* in/out: table */ + const char* new_name, /* in: new name */ + ibool rename_also_foreigns);/* in: in ALTER TABLE we want + to preserve the original table name + in constraints which reference it */ +/************************************************************************** +Removes an index from the dictionary cache. */ +UNIV_INTERN +void +dict_index_remove_from_cache( +/*=========================*/ + dict_table_t* table, /* in/out: table */ + dict_index_t* index); /* in, own: index */ +/************************************************************************** +Change the id of a table object in the dictionary cache. This is used in +DISCARD TABLESPACE. */ +UNIV_INTERN +void +dict_table_change_id_in_cache( +/*==========================*/ + dict_table_t* table, /* in/out: table object already in cache */ + dulint new_id);/* in: new id to set */ +/************************************************************************** +Adds a foreign key constraint object to the dictionary cache. May free +the object if there already is an object with the same identifier in. +At least one of foreign table or referenced table must already be in +the dictionary cache! */ +UNIV_INTERN +ulint +dict_foreign_add_to_cache( +/*======================*/ + /* out: DB_SUCCESS or error code */ + dict_foreign_t* foreign, /* in, own: foreign key constraint */ + ibool check_charsets);/* in: TRUE=check charset + compatibility */ +/************************************************************************* +Check if the index is referenced by a foreign key, if TRUE return the +matching instance NULL otherwise. */ +UNIV_INTERN +dict_foreign_t* +dict_table_get_referenced_constraint( +/*=================================*/ + /* out: pointer to foreign key struct if index + is defined for foreign key, otherwise NULL */ + dict_table_t* table, /* in: InnoDB table */ + dict_index_t* index); /* in: InnoDB index */ +/************************************************************************* +Checks if a table is referenced by foreign keys. */ +UNIV_INTERN +ibool +dict_table_is_referenced_by_foreign_key( +/*====================================*/ + /* out: TRUE if table is referenced + by a foreign key */ + const dict_table_t* table); /* in: InnoDB table */ +/************************************************************************** +Replace the index in the foreign key list that matches this index's +definition with an equivalent index. */ +UNIV_INTERN +void +dict_table_replace_index_in_foreign_list( +/*=====================================*/ + dict_table_t* table, /* in/out: table */ + dict_index_t* index); /* in: index to be replaced */ +/************************************************************************* +Checks if a index is defined for a foreign key constraint. Index is a part +of a foreign key constraint if the index is referenced by foreign key +or index is a foreign key index */ +UNIV_INTERN +dict_foreign_t* +dict_table_get_foreign_constraint( +/*==============================*/ + /* out: pointer to foreign key struct if index + is defined for foreign key, otherwise NULL */ + dict_table_t* table, /* in: InnoDB table */ + dict_index_t* index); /* in: InnoDB index */ +/************************************************************************* +Scans a table create SQL string and adds to the data dictionary +the foreign key constraints declared in the string. This function +should be called after the indexes for a table have been created. +Each foreign key constraint must be accompanied with indexes in +bot participating tables. The indexes are allowed to contain more +fields than mentioned in the constraint. */ +UNIV_INTERN +ulint +dict_create_foreign_constraints( +/*============================*/ + /* out: error code or DB_SUCCESS */ + trx_t* trx, /* in: transaction */ + const char* sql_string, /* in: table create statement where + foreign keys are declared like: + FOREIGN KEY (a, b) REFERENCES + table2(c, d), table2 can be written + also with the database + name before it: test.table2; the + default database id the database of + parameter name */ + const char* name, /* in: table full name in the + normalized form + database_name/table_name */ + ibool reject_fks); /* in: if TRUE, fail with error + code DB_CANNOT_ADD_CONSTRAINT if + any foreign keys are found. */ +/************************************************************************** +Parses the CONSTRAINT id's to be dropped in an ALTER TABLE statement. */ +UNIV_INTERN +ulint +dict_foreign_parse_drop_constraints( +/*================================*/ + /* out: DB_SUCCESS or + DB_CANNOT_DROP_CONSTRAINT if + syntax error or the constraint + id does not match */ + mem_heap_t* heap, /* in: heap from which we can + allocate memory */ + trx_t* trx, /* in: transaction */ + dict_table_t* table, /* in: table */ + ulint* n, /* out: number of constraints + to drop */ + const char*** constraints_to_drop); /* out: id's of the + constraints to drop */ +/************************************************************************** +Returns a table object and optionally increment its MySQL open handle count. +NOTE! This is a high-level function to be used mainly from outside the +'dict' directory. Inside this directory dict_table_get_low is usually the +appropriate function. */ +UNIV_INTERN +dict_table_t* +dict_table_get( +/*===========*/ + /* out: table, NULL if + does not exist */ + const char* table_name, /* in: table name */ + ibool inc_mysql_count); + /* in: whether to increment the open + handle count on the table */ +/************************************************************************** +Returns a index object, based on table and index id, and memoryfixes it. */ +UNIV_INTERN +dict_index_t* +dict_index_get_on_id_low( +/*=====================*/ + /* out: index, NULL if does not + exist */ + dict_table_t* table, /* in: table */ + dulint index_id); /* in: index id */ +/************************************************************************** +Checks if a table is in the dictionary cache. */ + +UNIV_INLINE +dict_table_t* +dict_table_check_if_in_cache_low( +/*=============================*/ + /* out: table, NULL if not found */ + const char* table_name); /* in: table name */ +/************************************************************************** +Gets a table; loads it to the dictionary cache if necessary. A low-level +function. */ +UNIV_INLINE +dict_table_t* +dict_table_get_low( +/*===============*/ + /* out: table, NULL if not found */ + const char* table_name); /* in: table name */ +/************************************************************************** +Returns a table object based on table id. */ +UNIV_INLINE +dict_table_t* +dict_table_get_on_id_low( +/*=====================*/ + /* out: table, NULL if does not exist */ + dulint table_id); /* in: table id */ +/************************************************************************** +Find an index that is equivalent to the one passed in and is not marked +for deletion. */ +UNIV_INTERN +dict_index_t* +dict_foreign_find_equiv_index( +/*==========================*/ + /* out: index equivalent to + foreign->foreign_index, or NULL */ + dict_foreign_t* foreign);/* in: foreign key */ +/************************************************************************** +Returns an index object by matching on the name and column names and if +more than index is found return the index with the higher id.*/ +UNIV_INTERN +dict_index_t* +dict_table_get_index_by_max_id( +/*===========================*/ + /* out: matching index, NULL if not found */ + dict_table_t* table, /* in: table */ + const char* name, /* in: the index name to find */ + const char** columns,/* in: array of column names */ + ulint n_cols);/* in: number of columns */ +/************************************************************************** +Returns a column's name. */ + +const char* +dict_table_get_col_name( +/*====================*/ + /* out: column name. NOTE: not + guaranteed to stay valid if table is + modified in any way (columns added, + etc.). */ + const dict_table_t* table, /* in: table */ + ulint col_nr);/* in: column number */ + +/************************************************************************** +Prints a table definition. */ +UNIV_INTERN +void +dict_table_print( +/*=============*/ + dict_table_t* table); /* in: table */ +/************************************************************************** +Prints a table data. */ +UNIV_INTERN +void +dict_table_print_low( +/*=================*/ + dict_table_t* table); /* in: table */ +/************************************************************************** +Prints a table data when we know the table name. */ +UNIV_INTERN +void +dict_table_print_by_name( +/*=====================*/ + const char* name); +/************************************************************************** +Outputs info on foreign keys of a table. */ +UNIV_INTERN +void +dict_print_info_on_foreign_keys( +/*============================*/ + ibool create_table_format, /* in: if TRUE then print in + a format suitable to be inserted into + a CREATE TABLE, otherwise in the format + of SHOW TABLE STATUS */ + FILE* file, /* in: file where to print */ + trx_t* trx, /* in: transaction */ + dict_table_t* table); /* in: table */ +/************************************************************************** +Outputs info on a foreign key of a table in a format suitable for +CREATE TABLE. */ +UNIV_INTERN +void +dict_print_info_on_foreign_key_in_create_format( +/*============================================*/ + FILE* file, /* in: file where to print */ + trx_t* trx, /* in: transaction */ + dict_foreign_t* foreign, /* in: foreign key constraint */ + ibool add_newline); /* in: whether to add a newline */ +/************************************************************************ +Displays the names of the index and the table. */ +UNIV_INTERN +void +dict_index_name_print( +/*==================*/ + FILE* file, /* in: output stream */ + trx_t* trx, /* in: transaction */ + const dict_index_t* index); /* in: index to print */ +#ifdef UNIV_DEBUG +/************************************************************************ +Gets the first index on the table (the clustered index). */ +UNIV_INLINE +dict_index_t* +dict_table_get_first_index( +/*=======================*/ + /* out: index, NULL if none exists */ + const dict_table_t* table); /* in: table */ +/************************************************************************ +Gets the next index on the table. */ +UNIV_INLINE +dict_index_t* +dict_table_get_next_index( +/*======================*/ + /* out: index, NULL if none left */ + const dict_index_t* index); /* in: index */ +#else /* UNIV_DEBUG */ +# define dict_table_get_first_index(table) UT_LIST_GET_FIRST((table)->indexes) +# define dict_table_get_next_index(index) UT_LIST_GET_NEXT(indexes, index) +#endif /* UNIV_DEBUG */ +/************************************************************************ +Check whether the index is the clustered index. */ +UNIV_INLINE +ulint +dict_index_is_clust( +/*================*/ + /* out: nonzero for clustered index, + zero for other indexes */ + const dict_index_t* index) /* in: index */ + __attribute__((pure)); +/************************************************************************ +Check whether the index is unique. */ +UNIV_INLINE +ulint +dict_index_is_unique( +/*=================*/ + /* out: nonzero for unique index, + zero for other indexes */ + const dict_index_t* index) /* in: index */ + __attribute__((pure)); +/************************************************************************ +Check whether the index is the insert buffer tree. */ +UNIV_INLINE +ulint +dict_index_is_ibuf( +/*===============*/ + /* out: nonzero for insert buffer, + zero for other indexes */ + const dict_index_t* index) /* in: index */ + __attribute__((pure)); + +/************************************************************************ +Gets the number of user-defined columns in a table in the dictionary +cache. */ +UNIV_INLINE +ulint +dict_table_get_n_user_cols( +/*=======================*/ + /* out: number of user-defined + (e.g., not ROW_ID) + columns of a table */ + const dict_table_t* table); /* in: table */ +/************************************************************************ +Gets the number of system columns in a table in the dictionary cache. */ +UNIV_INLINE +ulint +dict_table_get_n_sys_cols( +/*======================*/ + /* out: number of system (e.g., + ROW_ID) columns of a table */ + const dict_table_t* table); /* in: table */ +/************************************************************************ +Gets the number of all columns (also system) in a table in the dictionary +cache. */ +UNIV_INLINE +ulint +dict_table_get_n_cols( +/*==================*/ + /* out: number of columns of a table */ + const dict_table_t* table); /* in: table */ +#ifdef UNIV_DEBUG +/************************************************************************ +Gets the nth column of a table. */ +UNIV_INLINE +dict_col_t* +dict_table_get_nth_col( +/*===================*/ + /* out: pointer to column object */ + const dict_table_t* table, /* in: table */ + ulint pos); /* in: position of column */ +/************************************************************************ +Gets the given system column of a table. */ +UNIV_INLINE +dict_col_t* +dict_table_get_sys_col( +/*===================*/ + /* out: pointer to column object */ + const dict_table_t* table, /* in: table */ + ulint sys); /* in: DATA_ROW_ID, ... */ +#else /* UNIV_DEBUG */ +#define dict_table_get_nth_col(table, pos) \ +((table)->cols + (pos)) +#define dict_table_get_sys_col(table, sys) \ +((table)->cols + (table)->n_cols + (sys) - DATA_N_SYS_COLS) +#endif /* UNIV_DEBUG */ +/************************************************************************ +Gets the given system column number of a table. */ +UNIV_INLINE +ulint +dict_table_get_sys_col_no( +/*======================*/ + /* out: column number */ + const dict_table_t* table, /* in: table */ + ulint sys); /* in: DATA_ROW_ID, ... */ +/************************************************************************ +Returns the minimum data size of an index record. */ +UNIV_INLINE +ulint +dict_index_get_min_size( +/*====================*/ + /* out: minimum data size in bytes */ + const dict_index_t* index); /* in: index */ +/************************************************************************ +Check whether the table uses the compact page format. */ +UNIV_INLINE +ibool +dict_table_is_comp( +/*===============*/ + /* out: TRUE if table uses the + compact page format */ + const dict_table_t* table); /* in: table */ +/************************************************************************ +Determine the file format of a table. */ +UNIV_INLINE +ulint +dict_table_get_format( +/*==================*/ + /* out: file format version */ + const dict_table_t* table); /* in: table */ +/************************************************************************ +Set the file format of a table. */ +UNIV_INLINE +void +dict_table_set_format( +/*==================*/ + dict_table_t* table, /* in/out: table */ + ulint format);/* in: file format version */ +/************************************************************************ +Extract the compressed page size from table flags. */ +UNIV_INLINE +ulint +dict_table_flags_to_zip_size( +/*=========================*/ + /* out: compressed page size, + or 0 if not compressed */ + ulint flags) /* in: flags */ + __attribute__((const)); +/************************************************************************ +Check whether the table uses the compressed compact page format. */ +UNIV_INLINE +ulint +dict_table_zip_size( +/*================*/ + /* out: compressed page size, + or 0 if not compressed */ + const dict_table_t* table); /* in: table */ +/************************************************************************ +Checks if a column is in the ordering columns of the clustered index of a +table. Column prefixes are treated like whole columns. */ +UNIV_INTERN +ibool +dict_table_col_in_clustered_key( +/*============================*/ + /* out: TRUE if the column, or its + prefix, is in the clustered key */ + const dict_table_t* table, /* in: table */ + ulint n); /* in: column number */ +/*********************************************************************** +Copies types of columns contained in table to tuple and sets all +fields of the tuple to the SQL NULL value. This function should +be called right after dtuple_create(). */ +UNIV_INTERN +void +dict_table_copy_types( +/*==================*/ + dtuple_t* tuple, /* in/out: data tuple */ + const dict_table_t* table); /* in: table */ +/************************************************************************** +Looks for an index with the given id. NOTE that we do not reserve +the dictionary mutex: this function is for emergency purposes like +printing info of a corrupt database page! */ +UNIV_INTERN +dict_index_t* +dict_index_find_on_id_low( +/*======================*/ + /* out: index or NULL if not found from cache */ + dulint id); /* in: index id */ +/************************************************************************** +Adds an index to the dictionary cache. */ +UNIV_INTERN +ulint +dict_index_add_to_cache( +/*====================*/ + /* out: DB_SUCCESS or error code */ + dict_table_t* table, /* in: table on which the index is */ + dict_index_t* index, /* in, own: index; NOTE! The index memory + object is freed in this function! */ + ulint page_no,/* in: root page number of the index */ + ibool strict);/* in: TRUE=refuse to create the index + if records could be too big to fit in + an B-tree page */ +/************************************************************************** +Removes an index from the dictionary cache. */ +UNIV_INTERN +void +dict_index_remove_from_cache( +/*=========================*/ + dict_table_t* table, /* in/out: table */ + dict_index_t* index); /* in, own: index */ +/************************************************************************ +Gets the number of fields in the internal representation of an index, +including fields added by the dictionary system. */ +UNIV_INLINE +ulint +dict_index_get_n_fields( +/*====================*/ + /* out: number of fields */ + const dict_index_t* index); /* in: an internal + representation of index (in + the dictionary cache) */ +/************************************************************************ +Gets the number of fields in the internal representation of an index +that uniquely determine the position of an index entry in the index, if +we do not take multiversioning into account: in the B-tree use the value +returned by dict_index_get_n_unique_in_tree. */ +UNIV_INLINE +ulint +dict_index_get_n_unique( +/*====================*/ + /* out: number of fields */ + const dict_index_t* index); /* in: an internal representation + of index (in the dictionary cache) */ +/************************************************************************ +Gets the number of fields in the internal representation of an index +which uniquely determine the position of an index entry in the index, if +we also take multiversioning into account. */ +UNIV_INLINE +ulint +dict_index_get_n_unique_in_tree( +/*============================*/ + /* out: number of fields */ + const dict_index_t* index); /* in: an internal representation + of index (in the dictionary cache) */ +/************************************************************************ +Gets the number of user-defined ordering fields in the index. In the internal +representation we add the row id to the ordering fields to make all indexes +unique, but this function returns the number of fields the user defined +in the index as ordering fields. */ +UNIV_INLINE +ulint +dict_index_get_n_ordering_defined_by_user( +/*======================================*/ + /* out: number of fields */ + const dict_index_t* index); /* in: an internal representation + of index (in the dictionary cache) */ +#ifdef UNIV_DEBUG +/************************************************************************ +Gets the nth field of an index. */ +UNIV_INLINE +dict_field_t* +dict_index_get_nth_field( +/*=====================*/ + /* out: pointer to field object */ + const dict_index_t* index, /* in: index */ + ulint pos); /* in: position of field */ +#else /* UNIV_DEBUG */ +# define dict_index_get_nth_field(index, pos) ((index)->fields + (pos)) +#endif /* UNIV_DEBUG */ +/************************************************************************ +Gets pointer to the nth column in an index. */ +UNIV_INLINE +const dict_col_t* +dict_index_get_nth_col( +/*===================*/ + /* out: column */ + const dict_index_t* index, /* in: index */ + ulint pos); /* in: position of the field */ +/************************************************************************ +Gets the column number of the nth field in an index. */ +UNIV_INLINE +ulint +dict_index_get_nth_col_no( +/*======================*/ + /* out: column number */ + const dict_index_t* index, /* in: index */ + ulint pos); /* in: position of the field */ +/************************************************************************ +Looks for column n in an index. */ +UNIV_INTERN +ulint +dict_index_get_nth_col_pos( +/*=======================*/ + /* out: position in internal + representation of the index; + if not contained, returns + ULINT_UNDEFINED */ + const dict_index_t* index, /* in: index */ + ulint n); /* in: column number */ +/************************************************************************ +Returns TRUE if the index contains a column or a prefix of that column. */ +UNIV_INTERN +ibool +dict_index_contains_col_or_prefix( +/*==============================*/ + /* out: TRUE if contains the column + or its prefix */ + const dict_index_t* index, /* in: index */ + ulint n); /* in: column number */ +/************************************************************************ +Looks for a matching field in an index. The column has to be the same. The +column in index must be complete, or must contain a prefix longer than the +column in index2. That is, we must be able to construct the prefix in index2 +from the prefix in index. */ +UNIV_INTERN +ulint +dict_index_get_nth_field_pos( +/*=========================*/ + /* out: position in internal + representation of the index; + if not contained, returns + ULINT_UNDEFINED */ + const dict_index_t* index, /* in: index from which to search */ + const dict_index_t* index2, /* in: index */ + ulint n); /* in: field number in index2 */ +/************************************************************************ +Looks for column n position in the clustered index. */ +UNIV_INTERN +ulint +dict_table_get_nth_col_pos( +/*=======================*/ + /* out: position in internal + representation of + the clustered index */ + const dict_table_t* table, /* in: table */ + ulint n); /* in: column number */ +/************************************************************************ +Returns the position of a system column in an index. */ +UNIV_INLINE +ulint +dict_index_get_sys_col_pos( +/*=======================*/ + /* out: position, + ULINT_UNDEFINED if not contained */ + const dict_index_t* index, /* in: index */ + ulint type); /* in: DATA_ROW_ID, ... */ +/*********************************************************************** +Adds a column to index. */ +UNIV_INTERN +void +dict_index_add_col( +/*===============*/ + dict_index_t* index, /* in/out: index */ + const dict_table_t* table, /* in: table */ + dict_col_t* col, /* in: column */ + ulint prefix_len); /* in: column prefix length */ +/*********************************************************************** +Copies types of fields contained in index to tuple. */ +UNIV_INTERN +void +dict_index_copy_types( +/*==================*/ + dtuple_t* tuple, /* in/out: data tuple */ + const dict_index_t* index, /* in: index */ + ulint n_fields); /* in: number of + field types to copy */ +/************************************************************************* +Gets the field column. */ +UNIV_INLINE +const dict_col_t* +dict_field_get_col( +/*===============*/ + const dict_field_t* field); + +/************************************************************************** +Returns an index object if it is found in the dictionary cache. +Assumes that dict_sys->mutex is already being held. */ +UNIV_INTERN +dict_index_t* +dict_index_get_if_in_cache_low( +/*===========================*/ + /* out: index, NULL if not found */ + dulint index_id); /* in: index id */ +#if defined UNIV_DEBUG || defined UNIV_BUF_DEBUG +/************************************************************************** +Returns an index object if it is found in the dictionary cache. */ +UNIV_INTERN +dict_index_t* +dict_index_get_if_in_cache( +/*=======================*/ + /* out: index, NULL if not found */ + dulint index_id); /* in: index id */ +#endif /* UNIV_DEBUG || UNIV_BUF_DEBUG */ +#ifdef UNIV_DEBUG +/************************************************************************** +Checks that a tuple has n_fields_cmp value in a sensible range, so that +no comparison can occur with the page number field in a node pointer. */ +UNIV_INTERN +ibool +dict_index_check_search_tuple( +/*==========================*/ + /* out: TRUE if ok */ + const dict_index_t* index, /* in: index tree */ + const dtuple_t* tuple); /* in: tuple used in a search */ +/************************************************************************** +Check for duplicate index entries in a table [using the index name] */ +UNIV_INTERN +void +dict_table_check_for_dup_indexes( +/*=============================*/ + const dict_table_t* table); /* in: Check for dup indexes + in this table */ + +#endif /* UNIV_DEBUG */ +/************************************************************************** +Builds a node pointer out of a physical record and a page number. */ +UNIV_INTERN +dtuple_t* +dict_index_build_node_ptr( +/*======================*/ + /* out, own: node pointer */ + const dict_index_t* index, /* in: index */ + const rec_t* rec, /* in: record for which to build node + pointer */ + ulint page_no,/* in: page number to put in node + pointer */ + mem_heap_t* heap, /* in: memory heap where pointer + created */ + ulint level); /* in: level of rec in tree: + 0 means leaf level */ +/************************************************************************** +Copies an initial segment of a physical record, long enough to specify an +index entry uniquely. */ +UNIV_INTERN +rec_t* +dict_index_copy_rec_order_prefix( +/*=============================*/ + /* out: pointer to the prefix record */ + const dict_index_t* index, /* in: index */ + const rec_t* rec, /* in: record for which to + copy prefix */ + ulint* n_fields,/* out: number of fields copied */ + byte** buf, /* in/out: memory buffer for the + copied prefix, or NULL */ + ulint* buf_size);/* in/out: buffer size */ +/************************************************************************** +Builds a typed data tuple out of a physical record. */ +UNIV_INTERN +dtuple_t* +dict_index_build_data_tuple( +/*========================*/ + /* out, own: data tuple */ + dict_index_t* index, /* in: index */ + rec_t* rec, /* in: record for which to build data tuple */ + ulint n_fields,/* in: number of data fields */ + mem_heap_t* heap); /* in: memory heap where tuple created */ +/************************************************************************* +Gets the space id of the root of the index tree. */ +UNIV_INLINE +ulint +dict_index_get_space( +/*=================*/ + /* out: space id */ + const dict_index_t* index); /* in: index */ +/************************************************************************* +Sets the space id of the root of the index tree. */ +UNIV_INLINE +void +dict_index_set_space( +/*=================*/ + dict_index_t* index, /* in/out: index */ + ulint space); /* in: space id */ +/************************************************************************* +Gets the page number of the root of the index tree. */ +UNIV_INLINE +ulint +dict_index_get_page( +/*================*/ + /* out: page number */ + const dict_index_t* tree); /* in: index */ +/************************************************************************* +Sets the page number of the root of index tree. */ +UNIV_INLINE +void +dict_index_set_page( +/*================*/ + dict_index_t* index, /* in/out: index */ + ulint page); /* in: page number */ +/************************************************************************* +Gets the read-write lock of the index tree. */ +UNIV_INLINE +rw_lock_t* +dict_index_get_lock( +/*================*/ + /* out: read-write lock */ + dict_index_t* index); /* in: index */ +/************************************************************************ +Returns free space reserved for future updates of records. This is +relevant only in the case of many consecutive inserts, as updates +which make the records bigger might fragment the index. */ +UNIV_INLINE +ulint +dict_index_get_space_reserve(void); +/*==============================*/ + /* out: number of free bytes on page, + reserved for updates */ +/************************************************************************* +Calculates the minimum record length in an index. */ +UNIV_INTERN +ulint +dict_index_calc_min_rec_len( +/*========================*/ + const dict_index_t* index); /* in: index */ +/************************************************************************* +Calculates new estimates for table and index statistics. The statistics +are used in query optimization. */ +UNIV_INTERN +void +dict_update_statistics_low( +/*=======================*/ + dict_table_t* table, /* in/out: table */ + ibool has_dict_mutex);/* in: TRUE if the caller has the + dictionary mutex */ +/************************************************************************* +Calculates new estimates for table and index statistics. The statistics +are used in query optimization. */ +UNIV_INTERN +void +dict_update_statistics( +/*===================*/ + dict_table_t* table); /* in/out: table */ +/************************************************************************ +Reserves the dictionary system mutex for MySQL. */ +UNIV_INTERN +void +dict_mutex_enter_for_mysql(void); +/*============================*/ +/************************************************************************ +Releases the dictionary system mutex for MySQL. */ +UNIV_INTERN +void +dict_mutex_exit_for_mysql(void); +/*===========================*/ +/************************************************************************ +Checks if the database name in two table names is the same. */ +UNIV_INTERN +ibool +dict_tables_have_same_db( +/*=====================*/ + /* out: TRUE if same db name */ + const char* name1, /* in: table name in the form + dbname '/' tablename */ + const char* name2); /* in: table name in the form + dbname '/' tablename */ +/************************************************************************* +Removes an index from the cache */ +UNIV_INTERN +void +dict_index_remove_from_cache( +/*=========================*/ + dict_table_t* table, /* in/out: table */ + dict_index_t* index); /* in, own: index */ +/************************************************************************** +Get index by name */ +UNIV_INTERN +dict_index_t* +dict_table_get_index_on_name( +/*=========================*/ + /* out: index, NULL if does not exist */ + dict_table_t* table, /* in: table */ + const char* name); /* in: name of the index to find */ +/************************************************************************** +In case there is more than one index with the same name return the index +with the min(id). */ +UNIV_INTERN +dict_index_t* +dict_table_get_index_on_name_and_min_id( +/*====================================*/ + /* out: index, NULL if does not exist */ + dict_table_t* table, /* in: table */ + const char* name); /* in: name of the index to find */ +/* Buffers for storing detailed information about the latest foreign key +and unique key errors */ +extern FILE* dict_foreign_err_file; +extern mutex_t dict_foreign_err_mutex; /* mutex protecting the buffers */ + +extern dict_sys_t* dict_sys; /* the dictionary system */ +extern rw_lock_t dict_operation_lock; + +/* Dictionary system struct */ +struct dict_sys_struct{ + mutex_t mutex; /* mutex protecting the data + dictionary; protects also the + disk-based dictionary system tables; + this mutex serializes CREATE TABLE + and DROP TABLE, as well as reading + the dictionary data for a table from + system tables */ + dulint row_id; /* the next row id to assign; + NOTE that at a checkpoint this + must be written to the dict system + header and flushed to a file; in + recovery this must be derived from + the log records */ + hash_table_t* table_hash; /* hash table of the tables, based + on name */ + hash_table_t* table_id_hash; /* hash table of the tables, based + on id */ + UT_LIST_BASE_NODE_T(dict_table_t) + table_LRU; /* LRU list of tables */ + ulint size; /* varying space in bytes occupied + by the data dictionary table and + index objects */ + dict_table_t* sys_tables; /* SYS_TABLES table */ + dict_table_t* sys_columns; /* SYS_COLUMNS table */ + dict_table_t* sys_indexes; /* SYS_INDEXES table */ + dict_table_t* sys_fields; /* SYS_FIELDS table */ +}; + +#ifndef UNIV_NONINL +#include "dict0dict.ic" +#endif + +#endif === added file 'storage/xtradb/include/dict0dict.ic' --- a/storage/xtradb/include/dict0dict.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/dict0dict.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,785 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/********************************************************************** +Data dictionary system + +Created 1/8/1996 Heikki Tuuri +***********************************************************************/ + +#include "dict0load.h" +#include "rem0types.h" +#include "data0type.h" + +/************************************************************************* +Gets the column data type. */ +UNIV_INLINE +void +dict_col_copy_type( +/*===============*/ + const dict_col_t* col, /* in: column */ + dtype_t* type) /* out: data type */ +{ + ut_ad(col && type); + + type->mtype = col->mtype; + type->prtype = col->prtype; + type->len = col->len; + type->mbminlen = col->mbminlen; + type->mbmaxlen = col->mbmaxlen; +} + +#ifdef UNIV_DEBUG +/************************************************************************* +Assert that a column and a data type match. */ +UNIV_INLINE +ibool +dict_col_type_assert_equal( +/*=======================*/ + /* out: TRUE */ + const dict_col_t* col, /* in: column */ + const dtype_t* type) /* in: data type */ +{ + ut_ad(col); + ut_ad(type); + + ut_ad(col->mtype == type->mtype); + ut_ad(col->prtype == type->prtype); + ut_ad(col->len == type->len); + ut_ad(col->mbminlen == type->mbminlen); + ut_ad(col->mbmaxlen == type->mbmaxlen); + + return(TRUE); +} +#endif /* UNIV_DEBUG */ + +/*************************************************************************** +Returns the minimum size of the column. */ +UNIV_INLINE +ulint +dict_col_get_min_size( +/*==================*/ + /* out: minimum size */ + const dict_col_t* col) /* in: column */ +{ + return(dtype_get_min_size_low(col->mtype, col->prtype, col->len, + col->mbminlen, col->mbmaxlen)); +} +/*************************************************************************** +Returns the maximum size of the column. */ +UNIV_INLINE +ulint +dict_col_get_max_size( +/*==================*/ + /* out: maximum size */ + const dict_col_t* col) /* in: column */ +{ + return(dtype_get_max_size_low(col->mtype, col->len)); +} +/*************************************************************************** +Returns the size of a fixed size column, 0 if not a fixed size column. */ +UNIV_INLINE +ulint +dict_col_get_fixed_size( +/*====================*/ + /* out: fixed size, or 0 */ + const dict_col_t* col) /* in: column */ +{ + return(dtype_get_fixed_size_low(col->mtype, col->prtype, col->len, + col->mbminlen, col->mbmaxlen)); +} +/*************************************************************************** +Returns the ROW_FORMAT=REDUNDANT stored SQL NULL size of a column. +For fixed length types it is the fixed length of the type, otherwise 0. */ +UNIV_INLINE +ulint +dict_col_get_sql_null_size( +/*=======================*/ + /* out: SQL null storage size + in ROW_FORMAT=REDUNDANT */ + const dict_col_t* col) /* in: column */ +{ + return(dict_col_get_fixed_size(col)); +} + +/************************************************************************* +Gets the column number. */ +UNIV_INLINE +ulint +dict_col_get_no( +/*============*/ + const dict_col_t* col) +{ + ut_ad(col); + + return(col->ind); +} + +/************************************************************************* +Gets the column position in the clustered index. */ +UNIV_INLINE +ulint +dict_col_get_clust_pos( +/*===================*/ + const dict_col_t* col, /* in: table column */ + const dict_index_t* clust_index) /* in: clustered index */ +{ + ulint i; + + ut_ad(col); + ut_ad(clust_index); + ut_ad(dict_index_is_clust(clust_index)); + + for (i = 0; i < clust_index->n_def; i++) { + const dict_field_t* field = &clust_index->fields[i]; + + if (!field->prefix_len && field->col == col) { + return(i); + } + } + + return(ULINT_UNDEFINED); +} + +#ifdef UNIV_DEBUG +/************************************************************************ +Gets the first index on the table (the clustered index). */ +UNIV_INLINE +dict_index_t* +dict_table_get_first_index( +/*=======================*/ + /* out: index, NULL if none exists */ + const dict_table_t* table) /* in: table */ +{ + ut_ad(table); + ut_ad(table->magic_n == DICT_TABLE_MAGIC_N); + + return(UT_LIST_GET_FIRST(((dict_table_t*) table)->indexes)); +} + +/************************************************************************ +Gets the next index on the table. */ +UNIV_INLINE +dict_index_t* +dict_table_get_next_index( +/*======================*/ + /* out: index, NULL if none left */ + const dict_index_t* index) /* in: index */ +{ + ut_ad(index); + ut_ad(index->magic_n == DICT_INDEX_MAGIC_N); + + return(UT_LIST_GET_NEXT(indexes, (dict_index_t*) index)); +} +#endif /* UNIV_DEBUG */ + +/************************************************************************ +Check whether the index is the clustered index. */ +UNIV_INLINE +ulint +dict_index_is_clust( +/*================*/ + /* out: nonzero for clustered index, + zero for other indexes */ + const dict_index_t* index) /* in: index */ +{ + ut_ad(index); + ut_ad(index->magic_n == DICT_INDEX_MAGIC_N); + + return(UNIV_UNLIKELY(index->type & DICT_CLUSTERED)); +} +/************************************************************************ +Check whether the index is unique. */ +UNIV_INLINE +ulint +dict_index_is_unique( +/*=================*/ + /* out: nonzero for unique index, + zero for other indexes */ + const dict_index_t* index) /* in: index */ +{ + ut_ad(index); + ut_ad(index->magic_n == DICT_INDEX_MAGIC_N); + + return(UNIV_UNLIKELY(index->type & DICT_UNIQUE)); +} + +/************************************************************************ +Check whether the index is the insert buffer tree. */ +UNIV_INLINE +ulint +dict_index_is_ibuf( +/*===============*/ + /* out: nonzero for insert buffer, + zero for other indexes */ + const dict_index_t* index) /* in: index */ +{ + ut_ad(index); + ut_ad(index->magic_n == DICT_INDEX_MAGIC_N); + + return(UNIV_UNLIKELY(index->type & DICT_IBUF)); +} + +/************************************************************************ +Gets the number of user-defined columns in a table in the dictionary +cache. */ +UNIV_INLINE +ulint +dict_table_get_n_user_cols( +/*=======================*/ + /* out: number of user-defined + (e.g., not ROW_ID) + columns of a table */ + const dict_table_t* table) /* in: table */ +{ + ut_ad(table); + ut_ad(table->magic_n == DICT_TABLE_MAGIC_N); + + return(table->n_cols - DATA_N_SYS_COLS); +} + +/************************************************************************ +Gets the number of system columns in a table in the dictionary cache. */ +UNIV_INLINE +ulint +dict_table_get_n_sys_cols( +/*======================*/ + /* out: number of system (e.g., + ROW_ID) columns of a table */ + const dict_table_t* table __attribute__((unused))) /* in: table */ +{ + ut_ad(table); + ut_ad(table->magic_n == DICT_TABLE_MAGIC_N); + ut_ad(table->cached); + + return(DATA_N_SYS_COLS); +} + +/************************************************************************ +Gets the number of all columns (also system) in a table in the dictionary +cache. */ +UNIV_INLINE +ulint +dict_table_get_n_cols( +/*==================*/ + /* out: number of columns of a table */ + const dict_table_t* table) /* in: table */ +{ + ut_ad(table); + ut_ad(table->magic_n == DICT_TABLE_MAGIC_N); + + return(table->n_cols); +} + +#ifdef UNIV_DEBUG +/************************************************************************ +Gets the nth column of a table. */ +UNIV_INLINE +dict_col_t* +dict_table_get_nth_col( +/*===================*/ + /* out: pointer to column object */ + const dict_table_t* table, /* in: table */ + ulint pos) /* in: position of column */ +{ + ut_ad(table); + ut_ad(pos < table->n_def); + ut_ad(table->magic_n == DICT_TABLE_MAGIC_N); + + return((dict_col_t*) (table->cols) + pos); +} + +/************************************************************************ +Gets the given system column of a table. */ +UNIV_INLINE +dict_col_t* +dict_table_get_sys_col( +/*===================*/ + /* out: pointer to column object */ + const dict_table_t* table, /* in: table */ + ulint sys) /* in: DATA_ROW_ID, ... */ +{ + dict_col_t* col; + + ut_ad(table); + ut_ad(sys < DATA_N_SYS_COLS); + ut_ad(table->magic_n == DICT_TABLE_MAGIC_N); + + col = dict_table_get_nth_col(table, table->n_cols + - DATA_N_SYS_COLS + sys); + ut_ad(col->mtype == DATA_SYS); + ut_ad(col->prtype == (sys | DATA_NOT_NULL)); + + return(col); +} +#endif /* UNIV_DEBUG */ + +/************************************************************************ +Gets the given system column number of a table. */ +UNIV_INLINE +ulint +dict_table_get_sys_col_no( +/*======================*/ + /* out: column number */ + const dict_table_t* table, /* in: table */ + ulint sys) /* in: DATA_ROW_ID, ... */ +{ + ut_ad(table); + ut_ad(sys < DATA_N_SYS_COLS); + ut_ad(table->magic_n == DICT_TABLE_MAGIC_N); + + return(table->n_cols - DATA_N_SYS_COLS + sys); +} + +/************************************************************************ +Check whether the table uses the compact page format. */ +UNIV_INLINE +ibool +dict_table_is_comp( +/*===============*/ + /* out: TRUE if table uses the + compact page format */ + const dict_table_t* table) /* in: table */ +{ + ut_ad(table); + +#if DICT_TF_COMPACT != TRUE +#error +#endif + + return(UNIV_LIKELY(table->flags & DICT_TF_COMPACT)); +} + +/************************************************************************ +Determine the file format of a table. */ +UNIV_INLINE +ulint +dict_table_get_format( +/*==================*/ + /* out: file format version */ + const dict_table_t* table) /* in: table */ +{ + ut_ad(table); + + return((table->flags & DICT_TF_FORMAT_MASK) >> DICT_TF_FORMAT_SHIFT); +} + +/************************************************************************ +Determine the file format of a table. */ +UNIV_INLINE +void +dict_table_set_format( +/*==================*/ + dict_table_t* table, /* in/out: table */ + ulint format) /* in: file format version */ +{ + ut_ad(table); + + table->flags = (table->flags & ~DICT_TF_FORMAT_MASK) + | (format << DICT_TF_FORMAT_SHIFT); +} + +/************************************************************************ +Extract the compressed page size from table flags. */ +UNIV_INLINE +ulint +dict_table_flags_to_zip_size( +/*=========================*/ + /* out: compressed page size, + or 0 if not compressed */ + ulint flags) /* in: flags */ +{ + ulint zip_size = flags & DICT_TF_ZSSIZE_MASK; + + if (UNIV_UNLIKELY(zip_size)) { + zip_size = ((PAGE_ZIP_MIN_SIZE >> 1) + << (zip_size >> DICT_TF_ZSSIZE_SHIFT)); + + ut_ad(zip_size <= UNIV_PAGE_SIZE); + } + + return(zip_size); +} + +/************************************************************************ +Check whether the table uses the compressed compact page format. */ +UNIV_INLINE +ulint +dict_table_zip_size( +/*================*/ + /* out: compressed page size, + or 0 if not compressed */ + const dict_table_t* table) /* in: table */ +{ + ut_ad(table); + + return(dict_table_flags_to_zip_size(table->flags)); +} + +/************************************************************************ +Gets the number of fields in the internal representation of an index, +including fields added by the dictionary system. */ +UNIV_INLINE +ulint +dict_index_get_n_fields( +/*====================*/ + /* out: number of fields */ + const dict_index_t* index) /* in: an internal + representation of index (in + the dictionary cache) */ +{ + ut_ad(index); + ut_ad(index->magic_n == DICT_INDEX_MAGIC_N); + + return(index->n_fields); +} + +/************************************************************************ +Gets the number of fields in the internal representation of an index +that uniquely determine the position of an index entry in the index, if +we do not take multiversioning into account: in the B-tree use the value +returned by dict_index_get_n_unique_in_tree. */ +UNIV_INLINE +ulint +dict_index_get_n_unique( +/*====================*/ + /* out: number of fields */ + const dict_index_t* index) /* in: an internal representation + of index (in the dictionary cache) */ +{ + ut_ad(index); + ut_ad(index->magic_n == DICT_INDEX_MAGIC_N); + ut_ad(index->cached); + + return(index->n_uniq); +} + +/************************************************************************ +Gets the number of fields in the internal representation of an index +which uniquely determine the position of an index entry in the index, if +we also take multiversioning into account. */ +UNIV_INLINE +ulint +dict_index_get_n_unique_in_tree( +/*============================*/ + /* out: number of fields */ + const dict_index_t* index) /* in: an internal representation + of index (in the dictionary cache) */ +{ + ut_ad(index); + ut_ad(index->magic_n == DICT_INDEX_MAGIC_N); + ut_ad(index->cached); + + if (dict_index_is_clust(index)) { + + return(dict_index_get_n_unique(index)); + } + + return(dict_index_get_n_fields(index)); +} + +/************************************************************************ +Gets the number of user-defined ordering fields in the index. In the internal +representation of clustered indexes we add the row id to the ordering fields +to make a clustered index unique, but this function returns the number of +fields the user defined in the index as ordering fields. */ +UNIV_INLINE +ulint +dict_index_get_n_ordering_defined_by_user( +/*======================================*/ + /* out: number of fields */ + const dict_index_t* index) /* in: an internal representation + of index (in the dictionary cache) */ +{ + return(index->n_user_defined_cols); +} + +#ifdef UNIV_DEBUG +/************************************************************************ +Gets the nth field of an index. */ +UNIV_INLINE +dict_field_t* +dict_index_get_nth_field( +/*=====================*/ + /* out: pointer to field object */ + const dict_index_t* index, /* in: index */ + ulint pos) /* in: position of field */ +{ + ut_ad(index); + ut_ad(pos < index->n_def); + ut_ad(index->magic_n == DICT_INDEX_MAGIC_N); + + return((dict_field_t*) (index->fields) + pos); +} +#endif /* UNIV_DEBUG */ + +/************************************************************************ +Returns the position of a system column in an index. */ +UNIV_INLINE +ulint +dict_index_get_sys_col_pos( +/*=======================*/ + /* out: position, + ULINT_UNDEFINED if not contained */ + const dict_index_t* index, /* in: index */ + ulint type) /* in: DATA_ROW_ID, ... */ +{ + ut_ad(index); + ut_ad(index->magic_n == DICT_INDEX_MAGIC_N); + ut_ad(!(index->type & DICT_UNIVERSAL)); + + if (dict_index_is_clust(index)) { + + return(dict_col_get_clust_pos( + dict_table_get_sys_col(index->table, type), + index)); + } + + return(dict_index_get_nth_col_pos( + index, dict_table_get_sys_col_no(index->table, type))); +} + +/************************************************************************* +Gets the field column. */ +UNIV_INLINE +const dict_col_t* +dict_field_get_col( +/*===============*/ + const dict_field_t* field) +{ + ut_ad(field); + + return(field->col); +} + +/************************************************************************ +Gets pointer to the nth column in an index. */ +UNIV_INLINE +const dict_col_t* +dict_index_get_nth_col( +/*===================*/ + /* out: column */ + const dict_index_t* index, /* in: index */ + ulint pos) /* in: position of the field */ +{ + return(dict_field_get_col(dict_index_get_nth_field(index, pos))); +} + +/************************************************************************ +Gets the column number the nth field in an index. */ +UNIV_INLINE +ulint +dict_index_get_nth_col_no( +/*======================*/ + /* out: column number */ + const dict_index_t* index, /* in: index */ + ulint pos) /* in: position of the field */ +{ + return(dict_col_get_no(dict_index_get_nth_col(index, pos))); +} + +/************************************************************************ +Returns the minimum data size of an index record. */ +UNIV_INLINE +ulint +dict_index_get_min_size( +/*====================*/ + /* out: minimum data size in bytes */ + const dict_index_t* index) /* in: index */ +{ + ulint n = dict_index_get_n_fields(index); + ulint size = 0; + + while (n--) { + size += dict_col_get_min_size(dict_index_get_nth_col(index, + n)); + } + + return(size); +} + +/************************************************************************* +Gets the space id of the root of the index tree. */ +UNIV_INLINE +ulint +dict_index_get_space( +/*=================*/ + /* out: space id */ + const dict_index_t* index) /* in: index */ +{ + ut_ad(index); + ut_ad(index->magic_n == DICT_INDEX_MAGIC_N); + + return(index->space); +} + +/************************************************************************* +Sets the space id of the root of the index tree. */ +UNIV_INLINE +void +dict_index_set_space( +/*=================*/ + dict_index_t* index, /* in/out: index */ + ulint space) /* in: space id */ +{ + ut_ad(index); + ut_ad(index->magic_n == DICT_INDEX_MAGIC_N); + + index->space = space; +} + +/************************************************************************* +Gets the page number of the root of the index tree. */ +UNIV_INLINE +ulint +dict_index_get_page( +/*================*/ + /* out: page number */ + const dict_index_t* index) /* in: index */ +{ + ut_ad(index); + ut_ad(index->magic_n == DICT_INDEX_MAGIC_N); + + return(index->page); +} + +/************************************************************************* +Sets the page number of the root of index tree. */ +UNIV_INLINE +void +dict_index_set_page( +/*================*/ + dict_index_t* index, /* in/out: index */ + ulint page) /* in: page number */ +{ + ut_ad(index); + ut_ad(index->magic_n == DICT_INDEX_MAGIC_N); + + index->page = page; +} + +/************************************************************************* +Gets the read-write lock of the index tree. */ +UNIV_INLINE +rw_lock_t* +dict_index_get_lock( +/*================*/ + /* out: read-write lock */ + dict_index_t* index) /* in: index */ +{ + ut_ad(index); + ut_ad(index->magic_n == DICT_INDEX_MAGIC_N); + + return(&(index->lock)); +} + +/************************************************************************ +Returns free space reserved for future updates of records. This is +relevant only in the case of many consecutive inserts, as updates +which make the records bigger might fragment the index. */ +UNIV_INLINE +ulint +dict_index_get_space_reserve(void) +/*==============================*/ + /* out: number of free bytes on page, + reserved for updates */ +{ + return(UNIV_PAGE_SIZE / 16); +} + +/************************************************************************** +Checks if a table is in the dictionary cache. */ +UNIV_INLINE +dict_table_t* +dict_table_check_if_in_cache_low( +/*=============================*/ + /* out: table, NULL if not found */ + const char* table_name) /* in: table name */ +{ + dict_table_t* table; + ulint table_fold; + + ut_ad(table_name); + ut_ad(mutex_own(&(dict_sys->mutex))); + + /* Look for the table name in the hash table */ + table_fold = ut_fold_string(table_name); + + HASH_SEARCH(name_hash, dict_sys->table_hash, table_fold, + dict_table_t*, table, ut_ad(table->cached), + !strcmp(table->name, table_name)); + return(table); +} + +/************************************************************************** +Gets a table; loads it to the dictionary cache if necessary. A low-level +function. */ +UNIV_INLINE +dict_table_t* +dict_table_get_low( +/*===============*/ + /* out: table, NULL if not found */ + const char* table_name) /* in: table name */ +{ + dict_table_t* table; + + ut_ad(table_name); + ut_ad(mutex_own(&(dict_sys->mutex))); + + table = dict_table_check_if_in_cache_low(table_name); + + if (table == NULL) { + table = dict_load_table(table_name); + } + + ut_ad(!table || table->cached); + + return(table); +} + +/************************************************************************** +Returns a table object based on table id. */ +UNIV_INLINE +dict_table_t* +dict_table_get_on_id_low( +/*=====================*/ + /* out: table, NULL if does not exist */ + dulint table_id) /* in: table id */ +{ + dict_table_t* table; + ulint fold; + + ut_ad(mutex_own(&(dict_sys->mutex))); + + /* Look for the table name in the hash table */ + fold = ut_fold_dulint(table_id); + + HASH_SEARCH(id_hash, dict_sys->table_id_hash, fold, + dict_table_t*, table, ut_ad(table->cached), + !ut_dulint_cmp(table->id, table_id)); + if (table == NULL) { + table = dict_load_table_on_id(table_id); + } + + ut_ad(!table || table->cached); + + /* TODO: should get the type information from MySQL */ + + return(table); +} + === added file 'storage/xtradb/include/dict0load.h' --- a/storage/xtradb/include/dict0load.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/dict0load.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,119 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Loads to the memory cache database object definitions +from dictionary tables + +Created 4/24/1996 Heikki Tuuri +*******************************************************/ + +#ifndef dict0load_h +#define dict0load_h + +#include "univ.i" +#include "dict0types.h" +#include "ut0byte.h" +#include "mem0mem.h" + +/************************************************************************ +In a crash recovery we already have all the tablespace objects created. +This function compares the space id information in the InnoDB data dictionary +to what we already read with fil_load_single_table_tablespaces(). + +In a normal startup, we create the tablespace objects for every table in +InnoDB's data dictionary, if the corresponding .ibd file exists. +We also scan the biggest space id, and store it to fil_system. */ +UNIV_INTERN +void +dict_check_tablespaces_and_store_max_id( +/*====================================*/ + ibool in_crash_recovery); /* in: are we doing a crash recovery */ +/************************************************************************ +Finds the first table name in the given database. */ +UNIV_INTERN +char* +dict_get_first_table_name_in_db( +/*============================*/ + /* out, own: table name, NULL if + does not exist; the caller must free + the memory in the string! */ + const char* name); /* in: database name which ends to '/' */ +/************************************************************************ +Loads a table definition and also all its index definitions, and also +the cluster definition if the table is a member in a cluster. Also loads +all foreign key constraints where the foreign key is in the table or where +a foreign key references columns in this table. */ +UNIV_INTERN +dict_table_t* +dict_load_table( +/*============*/ + /* out: table, NULL if does not exist; + if the table is stored in an .ibd file, + but the file does not exist, + then we set the ibd_file_missing flag TRUE + in the table object we return */ + const char* name); /* in: table name in the + databasename/tablename format */ +/*************************************************************************** +Loads a table object based on the table id. */ +UNIV_INTERN +dict_table_t* +dict_load_table_on_id( +/*==================*/ + /* out: table; NULL if table does not exist */ + dulint table_id); /* in: table id */ +/************************************************************************ +This function is called when the database is booted. +Loads system table index definitions except for the clustered index which +is added to the dictionary cache at booting before calling this function. */ +UNIV_INTERN +void +dict_load_sys_table( +/*================*/ + dict_table_t* table); /* in: system table */ +#ifndef UNIV_HOTBACKUP +/*************************************************************************** +Loads foreign key constraints where the table is either the foreign key +holder or where the table is referenced by a foreign key. Adds these +constraints to the data dictionary. Note that we know that the dictionary +cache already contains all constraints where the other relevant table is +already in the dictionary cache. */ +UNIV_INTERN +ulint +dict_load_foreigns( +/*===============*/ + /* out: DB_SUCCESS or error code */ + const char* table_name, /* in: table name */ + ibool check_charsets);/* in: TRUE=check charsets + compatibility */ +#endif /* !UNIV_HOTBACKUP */ +/************************************************************************ +Prints to the standard output information on all tables found in the data +dictionary system table. */ +UNIV_INTERN +void +dict_print(void); +/*============*/ + + +#ifndef UNIV_NONINL +#include "dict0load.ic" +#endif + +#endif === added file 'storage/xtradb/include/dict0load.ic' --- a/storage/xtradb/include/dict0load.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/dict0load.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,25 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Loads to the memory cache database object definitions +from dictionary tables + +Created 4/24/1996 Heikki Tuuri +*******************************************************/ + === added file 'storage/xtradb/include/dict0mem.h' --- a/storage/xtradb/include/dict0mem.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/dict0mem.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,501 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Data dictionary memory object creation + +Created 1/8/1996 Heikki Tuuri +*******************************************************/ + +#ifndef dict0mem_h +#define dict0mem_h + +#include "univ.i" +#include "dict0types.h" +#include "data0type.h" +#include "mem0mem.h" +#include "rem0types.h" +#include "btr0types.h" +#include "ut0mem.h" +#include "ut0lst.h" +#include "ut0rnd.h" +#include "ut0byte.h" +#include "sync0rw.h" +#include "lock0types.h" +#include "hash0hash.h" +#include "que0types.h" +#include "trx0types.h" + +/* Type flags of an index: OR'ing of the flags is allowed to define a +combination of types */ +#define DICT_CLUSTERED 1 /* clustered index */ +#define DICT_UNIQUE 2 /* unique index */ +#define DICT_UNIVERSAL 4 /* index which can contain records from any + other index */ +#define DICT_IBUF 8 /* insert buffer tree */ + +/* Types for a table object */ +#define DICT_TABLE_ORDINARY 1 +#if 0 /* not implemented */ +#define DICT_TABLE_CLUSTER_MEMBER 2 +#define DICT_TABLE_CLUSTER 3 /* this means that the table is + really a cluster definition */ +#endif + +/* Table flags. All unused bits must be 0. */ +#define DICT_TF_COMPACT 1 /* Compact page format. + This must be set for + new file formats + (later than + DICT_TF_FORMAT_51). */ + +/* compressed page size (0=uncompressed, up to 15 compressed sizes) */ +#define DICT_TF_ZSSIZE_SHIFT 1 +#define DICT_TF_ZSSIZE_MASK (15 << DICT_TF_ZSSIZE_SHIFT) +#define DICT_TF_ZSSIZE_MAX (UNIV_PAGE_SIZE_SHIFT - PAGE_ZIP_MIN_SIZE_SHIFT + 1) + + +#define DICT_TF_FORMAT_SHIFT 5 /* file format */ +#define DICT_TF_FORMAT_MASK (127 << DICT_TF_FORMAT_SHIFT) +#define DICT_TF_FORMAT_51 0 /* InnoDB/MySQL up to 5.1 */ +#define DICT_TF_FORMAT_ZIP 1 /* InnoDB plugin for 5.1: + compressed tables, + new BLOB treatment */ +#define DICT_TF_FORMAT_MAX DICT_TF_FORMAT_ZIP + +#define DICT_TF_BITS 6 /* number of flag bits */ +#if (1 << (DICT_TF_BITS - DICT_TF_FORMAT_SHIFT)) <= DICT_TF_FORMAT_MAX +# error "DICT_TF_BITS is insufficient for DICT_TF_FORMAT_MAX" +#endif + +/************************************************************************** +Creates a table memory object. */ +UNIV_INTERN +dict_table_t* +dict_mem_table_create( +/*==================*/ + /* out, own: table object */ + const char* name, /* in: table name */ + ulint space, /* in: space where the clustered index + of the table is placed; this parameter + is ignored if the table is made + a member of a cluster */ + ulint n_cols, /* in: number of columns */ + ulint flags); /* in: table flags */ +/******************************************************************** +Free a table memory object. */ +UNIV_INTERN +void +dict_mem_table_free( +/*================*/ + dict_table_t* table); /* in: table */ +/************************************************************************** +Adds a column definition to a table. */ +UNIV_INTERN +void +dict_mem_table_add_col( +/*===================*/ + dict_table_t* table, /* in: table */ + mem_heap_t* heap, /* in: temporary memory heap, or NULL */ + const char* name, /* in: column name, or NULL */ + ulint mtype, /* in: main datatype */ + ulint prtype, /* in: precise type */ + ulint len); /* in: precision */ +/************************************************************************** +Creates an index memory object. */ +UNIV_INTERN +dict_index_t* +dict_mem_index_create( +/*==================*/ + /* out, own: index object */ + const char* table_name, /* in: table name */ + const char* index_name, /* in: index name */ + ulint space, /* in: space where the index tree is + placed, ignored if the index is of + the clustered type */ + ulint type, /* in: DICT_UNIQUE, + DICT_CLUSTERED, ... ORed */ + ulint n_fields); /* in: number of fields */ +/************************************************************************** +Adds a field definition to an index. NOTE: does not take a copy +of the column name if the field is a column. The memory occupied +by the column name may be released only after publishing the index. */ +UNIV_INTERN +void +dict_mem_index_add_field( +/*=====================*/ + dict_index_t* index, /* in: index */ + const char* name, /* in: column name */ + ulint prefix_len); /* in: 0 or the column prefix length + in a MySQL index like + INDEX (textcol(25)) */ +/************************************************************************** +Frees an index memory object. */ +UNIV_INTERN +void +dict_mem_index_free( +/*================*/ + dict_index_t* index); /* in: index */ +/************************************************************************** +Creates and initializes a foreign constraint memory object. */ +UNIV_INTERN +dict_foreign_t* +dict_mem_foreign_create(void); +/*=========================*/ + /* out, own: foreign constraint struct */ + +/* Data structure for a column in a table */ +struct dict_col_struct{ + /*----------------------*/ + /* The following are copied from dtype_t, + so that all bit-fields can be packed tightly. */ + unsigned mtype:8; /* main data type */ + unsigned prtype:24; /* precise type; MySQL data + type, charset code, flags to + indicate nullability, + signedness, whether this is a + binary string, whether this is + a true VARCHAR where MySQL + uses 2 bytes to store the length */ + + /* the remaining fields do not affect alphabetical ordering: */ + + unsigned len:16; /* length; for MySQL data this + is field->pack_length(), + except that for a >= 5.0.3 + type true VARCHAR this is the + maximum byte length of the + string data (in addition to + the string, MySQL uses 1 or 2 + bytes to store the string length) */ + + unsigned mbminlen:2; /* minimum length of a + character, in bytes */ + unsigned mbmaxlen:3; /* maximum length of a + character, in bytes */ + /*----------------------*/ + /* End of definitions copied from dtype_t */ + + unsigned ind:10; /* table column position + (starting from 0) */ + unsigned ord_part:1; /* nonzero if this column + appears in the ordering fields + of an index */ +}; + +/* DICT_MAX_INDEX_COL_LEN is measured in bytes and is the maximum +indexed column length (or indexed prefix length). It is set to 3*256, +so that one can create a column prefix index on 256 characters of a +TEXT or VARCHAR column also in the UTF-8 charset. In that charset, +a character may take at most 3 bytes. +This constant MUST NOT BE CHANGED, or the compatibility of InnoDB data +files would be at risk! */ + +#define DICT_MAX_INDEX_COL_LEN REC_MAX_INDEX_COL_LEN + +/* Data structure for a field in an index */ +struct dict_field_struct{ + dict_col_t* col; /* pointer to the table column */ + const char* name; /* name of the column */ + unsigned prefix_len:10; /* 0 or the length of the column + prefix in bytes in a MySQL index of + type, e.g., INDEX (textcol(25)); + must be smaller than + DICT_MAX_INDEX_COL_LEN; NOTE that + in the UTF-8 charset, MySQL sets this + to 3 * the prefix len in UTF-8 chars */ + unsigned fixed_len:10; /* 0 or the fixed length of the + column if smaller than + DICT_MAX_INDEX_COL_LEN */ +}; + +/* Data structure for an index. Most fields will be +initialized to 0, NULL or FALSE in dict_mem_index_create(). */ +struct dict_index_struct{ + dulint id; /* id of the index */ + mem_heap_t* heap; /* memory heap */ + const char* name; /* index name */ + const char* table_name; /* table name */ + dict_table_t* table; /* back pointer to table */ + unsigned space:32; + /* space where the index tree is placed */ + unsigned page:32;/* index tree root page number */ + unsigned type:4; /* index type (DICT_CLUSTERED, DICT_UNIQUE, + DICT_UNIVERSAL, DICT_IBUF) */ + unsigned trx_id_offset:10;/* position of the trx id column + in a clustered index record, if the fields + before it are known to be of a fixed size, + 0 otherwise */ + unsigned n_user_defined_cols:10; + /* number of columns the user defined to + be in the index: in the internal + representation we add more columns */ + unsigned n_uniq:10;/* number of fields from the beginning + which are enough to determine an index + entry uniquely */ + unsigned n_def:10;/* number of fields defined so far */ + unsigned n_fields:10;/* number of fields in the index */ + unsigned n_nullable:10;/* number of nullable fields */ + unsigned cached:1;/* TRUE if the index object is in the + dictionary cache */ + unsigned to_be_dropped:1; + /* TRUE if this index is marked to be + dropped in ha_innobase::prepare_drop_index(), + otherwise FALSE */ + dict_field_t* fields; /* array of field descriptions */ + UT_LIST_NODE_T(dict_index_t) + indexes;/* list of indexes of the table */ + btr_search_t* search_info; /* info used in optimistic searches */ + /*----------------------*/ + ib_int64_t* stat_n_diff_key_vals; + /* approximate number of different key values + for this index, for each n-column prefix + where n <= dict_get_n_unique(index); we + periodically calculate new estimates */ + ulint stat_index_size; + /* approximate index size in database pages */ + ulint stat_n_leaf_pages; + /* approximate number of leaf pages in the + index tree */ + rw_lock_t lock; /* read-write lock protecting the upper levels + of the index tree */ +#ifdef ROW_MERGE_IS_INDEX_USABLE + dulint trx_id; /* id of the transaction that created this + index, or ut_dulint_zero if the index existed + when InnoDB was started up */ +#endif /* ROW_MERGE_IS_INDEX_USABLE */ +#ifdef UNIV_DEBUG + ulint magic_n;/* magic number */ +# define DICT_INDEX_MAGIC_N 76789786 +#endif +}; + +/* Data structure for a foreign key constraint; an example: +FOREIGN KEY (A, B) REFERENCES TABLE2 (C, D). Most fields will be +initialized to 0, NULL or FALSE in dict_mem_foreign_create(). */ + +struct dict_foreign_struct{ + mem_heap_t* heap; /* this object is allocated from + this memory heap */ + char* id; /* id of the constraint as a + null-terminated string */ + unsigned n_fields:10; /* number of indexes' first fields + for which the the foreign key + constraint is defined: we allow the + indexes to contain more fields than + mentioned in the constraint, as long + as the first fields are as mentioned */ + unsigned type:6; /* 0 or DICT_FOREIGN_ON_DELETE_CASCADE + or DICT_FOREIGN_ON_DELETE_SET_NULL */ + char* foreign_table_name;/* foreign table name */ + dict_table_t* foreign_table; /* table where the foreign key is */ + const char** foreign_col_names;/* names of the columns in the + foreign key */ + char* referenced_table_name;/* referenced table name */ + dict_table_t* referenced_table;/* table where the referenced key + is */ + const char** referenced_col_names;/* names of the referenced + columns in the referenced table */ + dict_index_t* foreign_index; /* foreign index; we require that + both tables contain explicitly defined + indexes for the constraint: InnoDB + does not generate new indexes + implicitly */ + dict_index_t* referenced_index;/* referenced index */ + UT_LIST_NODE_T(dict_foreign_t) + foreign_list; /* list node for foreign keys of the + table */ + UT_LIST_NODE_T(dict_foreign_t) + referenced_list;/* list node for referenced keys of the + table */ +}; + +/* The flags for ON_UPDATE and ON_DELETE can be ORed; the default is that +a foreign key constraint is enforced, therefore RESTRICT just means no flag */ +#define DICT_FOREIGN_ON_DELETE_CASCADE 1 +#define DICT_FOREIGN_ON_DELETE_SET_NULL 2 +#define DICT_FOREIGN_ON_UPDATE_CASCADE 4 +#define DICT_FOREIGN_ON_UPDATE_SET_NULL 8 +#define DICT_FOREIGN_ON_DELETE_NO_ACTION 16 +#define DICT_FOREIGN_ON_UPDATE_NO_ACTION 32 + + +/* Data structure for a database table. Most fields will be +initialized to 0, NULL or FALSE in dict_mem_table_create(). */ +struct dict_table_struct{ + dulint id; /* id of the table */ + mem_heap_t* heap; /* memory heap */ + const char* name; /* table name */ + const char* dir_path_of_temp_table;/* NULL or the directory path + where a TEMPORARY table that was explicitly + created by a user should be placed if + innodb_file_per_table is defined in my.cnf; + in Unix this is usually /tmp/..., in Windows + \temp\... */ + unsigned space:32; + /* space where the clustered index of the + table is placed */ + unsigned flags:DICT_TF_BITS;/* DICT_TF_COMPACT, ... */ + unsigned ibd_file_missing:1; + /* TRUE if this is in a single-table + tablespace and the .ibd file is missing; then + we must return in ha_innodb.cc an error if the + user tries to query such an orphaned table */ + unsigned tablespace_discarded:1; + /* this flag is set TRUE when the user + calls DISCARD TABLESPACE on this + table, and reset to FALSE in IMPORT + TABLESPACE */ + unsigned cached:1;/* TRUE if the table object has been added + to the dictionary cache */ + unsigned n_def:10;/* number of columns defined so far */ + unsigned n_cols:10;/* number of columns */ + dict_col_t* cols; /* array of column descriptions */ + const char* col_names; + /* Column names packed in a character string + "name1\0name2\0...nameN\0". Until + the string contains n_cols, it will be + allocated from a temporary heap. The final + string will be allocated from table->heap. */ + hash_node_t name_hash; /* hash chain node */ + hash_node_t id_hash; /* hash chain node */ + UT_LIST_BASE_NODE_T(dict_index_t) + indexes; /* list of indexes of the table */ + UT_LIST_BASE_NODE_T(dict_foreign_t) + foreign_list;/* list of foreign key constraints + in the table; these refer to columns + in other tables */ + UT_LIST_BASE_NODE_T(dict_foreign_t) + referenced_list;/* list of foreign key constraints + which refer to this table */ + UT_LIST_NODE_T(dict_table_t) + table_LRU; /* node of the LRU list of tables */ + ulint n_mysql_handles_opened; + /* count of how many handles MySQL has opened + to this table; dropping of the table is + NOT allowed until this count gets to zero; + MySQL does NOT itself check the number of + open handles at drop */ + ulint n_foreign_key_checks_running; + /* count of how many foreign key check + operations are currently being performed + on the table: we cannot drop the table while + there are foreign key checks running on + it! */ + dulint query_cache_inv_trx_id; + /* transactions whose trx id < than this + number are not allowed to store to the MySQL + query cache or retrieve from it; when a trx + with undo logs commits, it sets this to the + value of the trx id counter for the tables it + had an IX lock on */ + UT_LIST_BASE_NODE_T(lock_t) + locks; /* list of locks on the table */ +#ifdef UNIV_DEBUG + /*----------------------*/ + ibool does_not_fit_in_memory; + /* this field is used to specify in simulations + tables which are so big that disk should be + accessed: disk access is simulated by + putting the thread to sleep for a while; + NOTE that this flag is not stored to the data + dictionary on disk, and the database will + forget about value TRUE if it has to reload + the table definition from disk */ +#endif /* UNIV_DEBUG */ + /*----------------------*/ + unsigned big_rows:1; + /* flag: TRUE if the maximum length of + a single row exceeds BIG_ROW_SIZE; + initialized in dict_table_add_to_cache() */ + unsigned stat_initialized:1; /* TRUE if statistics have + been calculated the first time + after database startup or table creation */ + ib_int64_t stat_n_rows; + /* approximate number of rows in the table; + we periodically calculate new estimates */ + ulint stat_clustered_index_size; + /* approximate clustered index size in + database pages */ + ulint stat_sum_of_other_index_sizes; + /* other indexes in database pages */ + ulint stat_modified_counter; + /* when a row is inserted, updated, or deleted, + we add 1 to this number; we calculate new + estimates for the stat_... values for the + table and the indexes at an interval of 2 GB + or when about 1 / 16 of table has been + modified; also when the estimate operation is + called for MySQL SHOW TABLE STATUS; the + counter is reset to zero at statistics + calculation; this counter is not protected by + any latch, because this is only used for + heuristics */ + /*----------------------*/ + /* The following fields are used by the + AUTOINC code. The actual collection of + tables locked during AUTOINC read/write is + kept in trx_t. In order to quickly determine + whether a transaction has locked the AUTOINC + lock we keep a pointer to the transaction + here in the autoinc_trx variable. This is to + avoid acquiring the kernel mutex and scanning + the vector in trx_t. + + When an AUTOINC lock has to wait, the + corresponding lock instance is created on + the trx lock heap rather than use the + pre-allocated instance in autoinc_lock below.*/ + lock_t* autoinc_lock; + /* a buffer for an AUTOINC lock + for this table: we allocate the memory here + so that individual transactions can get it + and release it without a need to allocate + space from the lock heap of the trx: + otherwise the lock heap would grow rapidly + if we do a large insert from a select */ + mutex_t autoinc_mutex; + /* mutex protecting the autoincrement + counter */ + ib_uint64_t autoinc;/* autoinc counter value to give to the + next inserted row */ + ulong n_waiting_or_granted_auto_inc_locks; + /* This counter is used to track the number + of granted and pending autoinc locks on this + table. This value is set after acquiring the + kernel mutex but we peek the contents to + determine whether other transactions have + acquired the AUTOINC lock or not. Of course + only one transaction can be granted the + lock but there can be multiple waiters. */ + const trx_t* autoinc_trx; + /* The transaction that currently holds the + the AUTOINC lock on this table. */ + /*----------------------*/ + +#ifdef UNIV_DEBUG + ulint magic_n;/* magic number */ +# define DICT_TABLE_MAGIC_N 76333786 +#endif /* UNIV_DEBUG */ +}; + +#ifndef UNIV_NONINL +#include "dict0mem.ic" +#endif + +#endif === added file 'storage/xtradb/include/dict0mem.ic' --- a/storage/xtradb/include/dict0mem.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/dict0mem.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,25 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/********************************************************************** +Data dictionary memory object creation + +Created 1/8/1996 Heikki Tuuri +***********************************************************************/ + + === added file 'storage/xtradb/include/dict0types.h' --- a/storage/xtradb/include/dict0types.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/dict0types.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,45 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Data dictionary global types + +Created 1/8/1996 Heikki Tuuri +*******************************************************/ + +#ifndef dict0types_h +#define dict0types_h + +#include "ut0list.h" + +typedef struct dict_sys_struct dict_sys_t; +typedef struct dict_col_struct dict_col_t; +typedef struct dict_field_struct dict_field_t; +typedef struct dict_index_struct dict_index_t; +typedef struct dict_table_struct dict_table_t; +typedef struct dict_foreign_struct dict_foreign_t; + +/* A cluster object is a table object with the type field set to +DICT_CLUSTERED */ + +typedef dict_table_t dict_cluster_t; + +typedef struct ind_node_struct ind_node_t; +typedef struct tab_node_struct tab_node_t; + +#endif === added file 'storage/xtradb/include/dyn0dyn.h' --- a/storage/xtradb/include/dyn0dyn.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/dyn0dyn.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,182 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +The dynamically allocated array + +Created 2/5/1996 Heikki Tuuri +*******************************************************/ + +#ifndef dyn0dyn_h +#define dyn0dyn_h + +#include "univ.i" +#include "ut0lst.h" +#include "mem0mem.h" + +typedef struct dyn_block_struct dyn_block_t; +typedef dyn_block_t dyn_array_t; + + +/* This is the initial 'payload' size of a dynamic array; +this must be > MLOG_BUF_MARGIN + 30! */ +#define DYN_ARRAY_DATA_SIZE 512 + +/************************************************************************* +Initializes a dynamic array. */ +UNIV_INLINE +dyn_array_t* +dyn_array_create( +/*=============*/ + /* out: initialized dyn array */ + dyn_array_t* arr); /* in: pointer to a memory buffer of + size sizeof(dyn_array_t) */ +/**************************************************************** +Frees a dynamic array. */ +UNIV_INLINE +void +dyn_array_free( +/*===========*/ + dyn_array_t* arr); /* in: dyn array */ +/************************************************************************* +Makes room on top of a dyn array and returns a pointer to a buffer in it. +After copying the elements, the caller must close the buffer using +dyn_array_close. */ +UNIV_INLINE +byte* +dyn_array_open( +/*===========*/ + /* out: pointer to the buffer */ + dyn_array_t* arr, /* in: dynamic array */ + ulint size); /* in: size in bytes of the buffer; MUST be + smaller than DYN_ARRAY_DATA_SIZE! */ +/************************************************************************* +Closes the buffer returned by dyn_array_open. */ +UNIV_INLINE +void +dyn_array_close( +/*============*/ + dyn_array_t* arr, /* in: dynamic array */ + byte* ptr); /* in: buffer space from ptr up was not used */ +/************************************************************************* +Makes room on top of a dyn array and returns a pointer to +the added element. The caller must copy the element to +the pointer returned. */ +UNIV_INLINE +void* +dyn_array_push( +/*===========*/ + /* out: pointer to the element */ + dyn_array_t* arr, /* in: dynamic array */ + ulint size); /* in: size in bytes of the element */ +/**************************************************************** +Returns pointer to an element in dyn array. */ +UNIV_INLINE +void* +dyn_array_get_element( +/*==================*/ + /* out: pointer to element */ + dyn_array_t* arr, /* in: dyn array */ + ulint pos); /* in: position of element as bytes + from array start */ +/**************************************************************** +Returns the size of stored data in a dyn array. */ +UNIV_INLINE +ulint +dyn_array_get_data_size( +/*====================*/ + /* out: data size in bytes */ + dyn_array_t* arr); /* in: dyn array */ +/**************************************************************** +Gets the first block in a dyn array. */ +UNIV_INLINE +dyn_block_t* +dyn_array_get_first_block( +/*======================*/ + dyn_array_t* arr); /* in: dyn array */ +/**************************************************************** +Gets the last block in a dyn array. */ +UNIV_INLINE +dyn_block_t* +dyn_array_get_last_block( +/*=====================*/ + dyn_array_t* arr); /* in: dyn array */ +/************************************************************************ +Gets the next block in a dyn array. */ +UNIV_INLINE +dyn_block_t* +dyn_array_get_next_block( +/*=====================*/ + /* out: pointer to next, NULL if end of list */ + dyn_array_t* arr, /* in: dyn array */ + dyn_block_t* block); /* in: dyn array block */ +/************************************************************************ +Gets the number of used bytes in a dyn array block. */ +UNIV_INLINE +ulint +dyn_block_get_used( +/*===============*/ + /* out: number of bytes used */ + dyn_block_t* block); /* in: dyn array block */ +/************************************************************************ +Gets pointer to the start of data in a dyn array block. */ +UNIV_INLINE +byte* +dyn_block_get_data( +/*===============*/ + /* out: pointer to data */ + dyn_block_t* block); /* in: dyn array block */ +/************************************************************ +Pushes n bytes to a dyn array. */ +UNIV_INLINE +void +dyn_push_string( +/*============*/ + dyn_array_t* arr, /* in: dyn array */ + const byte* str, /* in: string to write */ + ulint len); /* in: string length */ + +/*#################################################################*/ + +/* NOTE! Do not use the fields of the struct directly: the definition +appears here only for the compiler to know its size! */ +struct dyn_block_struct{ + mem_heap_t* heap; /* in the first block this is != NULL + if dynamic allocation has been needed */ + ulint used; /* number of data bytes used in this block */ + byte data[DYN_ARRAY_DATA_SIZE]; + /* storage for array elements */ + UT_LIST_BASE_NODE_T(dyn_block_t) base; + /* linear list of dyn blocks: this node is + used only in the first block */ + UT_LIST_NODE_T(dyn_block_t) list; + /* linear list node: used in all blocks */ +#ifdef UNIV_DEBUG + ulint buf_end;/* only in the debug version: if dyn array is + opened, this is the buffer end offset, else + this is 0 */ + ulint magic_n; +#endif +}; + + +#ifndef UNIV_NONINL +#include "dyn0dyn.ic" +#endif + +#endif === added file 'storage/xtradb/include/dyn0dyn.ic' --- a/storage/xtradb/include/dyn0dyn.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/dyn0dyn.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,362 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +The dynamically allocated array + +Created 2/5/1996 Heikki Tuuri +*******************************************************/ + +#define DYN_BLOCK_MAGIC_N 375767 +#define DYN_BLOCK_FULL_FLAG 0x1000000UL + +/**************************************************************** +Adds a new block to a dyn array. */ +UNIV_INTERN +dyn_block_t* +dyn_array_add_block( +/*================*/ + /* out: created block */ + dyn_array_t* arr); /* in: dyn array */ + + +/**************************************************************** +Gets the first block in a dyn array. */ +UNIV_INLINE +dyn_block_t* +dyn_array_get_first_block( +/*======================*/ + dyn_array_t* arr) /* in: dyn array */ +{ + return(arr); +} + +/**************************************************************** +Gets the last block in a dyn array. */ +UNIV_INLINE +dyn_block_t* +dyn_array_get_last_block( +/*=====================*/ + dyn_array_t* arr) /* in: dyn array */ +{ + if (arr->heap == NULL) { + + return(arr); + } + + return(UT_LIST_GET_LAST(arr->base)); +} + +/************************************************************************ +Gets the next block in a dyn array. */ +UNIV_INLINE +dyn_block_t* +dyn_array_get_next_block( +/*=====================*/ + /* out: pointer to next, NULL if end of list */ + dyn_array_t* arr, /* in: dyn array */ + dyn_block_t* block) /* in: dyn array block */ +{ + ut_ad(arr && block); + + if (arr->heap == NULL) { + ut_ad(arr == block); + + return(NULL); + } + + return(UT_LIST_GET_NEXT(list, block)); +} + +/************************************************************************ +Gets the number of used bytes in a dyn array block. */ +UNIV_INLINE +ulint +dyn_block_get_used( +/*===============*/ + /* out: number of bytes used */ + dyn_block_t* block) /* in: dyn array block */ +{ + ut_ad(block); + + return((block->used) & ~DYN_BLOCK_FULL_FLAG); +} + +/************************************************************************ +Gets pointer to the start of data in a dyn array block. */ +UNIV_INLINE +byte* +dyn_block_get_data( +/*===============*/ + /* out: pointer to data */ + dyn_block_t* block) /* in: dyn array block */ +{ + ut_ad(block); + + return(block->data); +} + +/************************************************************************* +Initializes a dynamic array. */ +UNIV_INLINE +dyn_array_t* +dyn_array_create( +/*=============*/ + /* out: initialized dyn array */ + dyn_array_t* arr) /* in: pointer to a memory buffer of + size sizeof(dyn_array_t) */ +{ + ut_ad(arr); +#if DYN_ARRAY_DATA_SIZE >= DYN_BLOCK_FULL_FLAG +# error "DYN_ARRAY_DATA_SIZE >= DYN_BLOCK_FULL_FLAG" +#endif + + arr->heap = NULL; + arr->used = 0; + +#ifdef UNIV_DEBUG + arr->buf_end = 0; + arr->magic_n = DYN_BLOCK_MAGIC_N; +#endif + return(arr); +} + +/**************************************************************** +Frees a dynamic array. */ +UNIV_INLINE +void +dyn_array_free( +/*===========*/ + dyn_array_t* arr) /* in: dyn array */ +{ + if (arr->heap != NULL) { + mem_heap_free(arr->heap); + } + +#ifdef UNIV_DEBUG + arr->magic_n = 0; +#endif +} + +/************************************************************************* +Makes room on top of a dyn array and returns a pointer to the added element. +The caller must copy the element to the pointer returned. */ +UNIV_INLINE +void* +dyn_array_push( +/*===========*/ + /* out: pointer to the element */ + dyn_array_t* arr, /* in: dynamic array */ + ulint size) /* in: size in bytes of the element */ +{ + dyn_block_t* block; + ulint used; + + ut_ad(arr); + ut_ad(arr->magic_n == DYN_BLOCK_MAGIC_N); + ut_ad(size <= DYN_ARRAY_DATA_SIZE); + ut_ad(size); + + block = arr; + used = block->used; + + if (used + size > DYN_ARRAY_DATA_SIZE) { + /* Get the last array block */ + + block = dyn_array_get_last_block(arr); + used = block->used; + + if (used + size > DYN_ARRAY_DATA_SIZE) { + block = dyn_array_add_block(arr); + used = block->used; + } + } + + block->used = used + size; + ut_ad(block->used <= DYN_ARRAY_DATA_SIZE); + + return((block->data) + used); +} + +/************************************************************************* +Makes room on top of a dyn array and returns a pointer to a buffer in it. +After copying the elements, the caller must close the buffer using +dyn_array_close. */ +UNIV_INLINE +byte* +dyn_array_open( +/*===========*/ + /* out: pointer to the buffer */ + dyn_array_t* arr, /* in: dynamic array */ + ulint size) /* in: size in bytes of the buffer; MUST be + smaller than DYN_ARRAY_DATA_SIZE! */ +{ + dyn_block_t* block; + ulint used; + + ut_ad(arr); + ut_ad(arr->magic_n == DYN_BLOCK_MAGIC_N); + ut_ad(size <= DYN_ARRAY_DATA_SIZE); + ut_ad(size); + + block = arr; + used = block->used; + + if (used + size > DYN_ARRAY_DATA_SIZE) { + /* Get the last array block */ + + block = dyn_array_get_last_block(arr); + used = block->used; + + if (used + size > DYN_ARRAY_DATA_SIZE) { + block = dyn_array_add_block(arr); + used = block->used; + ut_a(size <= DYN_ARRAY_DATA_SIZE); + } + } + + ut_ad(block->used <= DYN_ARRAY_DATA_SIZE); +#ifdef UNIV_DEBUG + ut_ad(arr->buf_end == 0); + + arr->buf_end = used + size; +#endif + return((block->data) + used); +} + +/************************************************************************* +Closes the buffer returned by dyn_array_open. */ +UNIV_INLINE +void +dyn_array_close( +/*============*/ + dyn_array_t* arr, /* in: dynamic array */ + byte* ptr) /* in: buffer space from ptr up was not used */ +{ + dyn_block_t* block; + + ut_ad(arr); + ut_ad(arr->magic_n == DYN_BLOCK_MAGIC_N); + + block = dyn_array_get_last_block(arr); + + ut_ad(arr->buf_end + block->data >= ptr); + + block->used = ptr - block->data; + + ut_ad(block->used <= DYN_ARRAY_DATA_SIZE); + +#ifdef UNIV_DEBUG + arr->buf_end = 0; +#endif +} + +/**************************************************************** +Returns pointer to an element in dyn array. */ +UNIV_INLINE +void* +dyn_array_get_element( +/*==================*/ + /* out: pointer to element */ + dyn_array_t* arr, /* in: dyn array */ + ulint pos) /* in: position of element as bytes + from array start */ +{ + dyn_block_t* block; + ulint used; + + ut_ad(arr); + ut_ad(arr->magic_n == DYN_BLOCK_MAGIC_N); + + /* Get the first array block */ + block = dyn_array_get_first_block(arr); + + if (arr->heap != NULL) { + used = dyn_block_get_used(block); + + while (pos >= used) { + pos -= used; + block = UT_LIST_GET_NEXT(list, block); + ut_ad(block); + + used = dyn_block_get_used(block); + } + } + + ut_ad(block); + ut_ad(dyn_block_get_used(block) >= pos); + + return(block->data + pos); +} + +/**************************************************************** +Returns the size of stored data in a dyn array. */ +UNIV_INLINE +ulint +dyn_array_get_data_size( +/*====================*/ + /* out: data size in bytes */ + dyn_array_t* arr) /* in: dyn array */ +{ + dyn_block_t* block; + ulint sum = 0; + + ut_ad(arr); + ut_ad(arr->magic_n == DYN_BLOCK_MAGIC_N); + + if (arr->heap == NULL) { + + return(arr->used); + } + + /* Get the first array block */ + block = dyn_array_get_first_block(arr); + + while (block != NULL) { + sum += dyn_block_get_used(block); + block = dyn_array_get_next_block(arr, block); + } + + return(sum); +} + +/************************************************************ +Pushes n bytes to a dyn array. */ +UNIV_INLINE +void +dyn_push_string( +/*============*/ + dyn_array_t* arr, /* in: dyn array */ + const byte* str, /* in: string to write */ + ulint len) /* in: string length */ +{ + ulint n_copied; + + while (len > 0) { + if (len > DYN_ARRAY_DATA_SIZE) { + n_copied = DYN_ARRAY_DATA_SIZE; + } else { + n_copied = len; + } + + memcpy(dyn_array_push(arr, n_copied), str, n_copied); + + str += n_copied; + len -= n_copied; + } +} === added file 'storage/xtradb/include/eval0eval.h' --- a/storage/xtradb/include/eval0eval.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/eval0eval.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,113 @@ +/***************************************************************************** + +Copyright (c) 1997, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +SQL evaluator: evaluates simple data structures, like expressions, in +a query graph + +Created 12/29/1997 Heikki Tuuri +*******************************************************/ + +#ifndef eval0eval_h +#define eval0eval_h + +#include "univ.i" +#include "que0types.h" +#include "pars0sym.h" +#include "pars0pars.h" + +/********************************************************************* +Free the buffer from global dynamic memory for a value of a que_node, +if it has been allocated in the above function. The freeing for pushed +column values is done in sel_col_prefetch_buf_free. */ +UNIV_INTERN +void +eval_node_free_val_buf( +/*===================*/ + que_node_t* node); /* in: query graph node */ +/********************************************************************* +Evaluates a symbol table symbol. */ +UNIV_INLINE +void +eval_sym( +/*=====*/ + sym_node_t* sym_node); /* in: symbol table node */ +/********************************************************************* +Evaluates an expression. */ +UNIV_INLINE +void +eval_exp( +/*=====*/ + que_node_t* exp_node); /* in: expression */ +/********************************************************************* +Sets an integer value as the value of an expression node. */ +UNIV_INLINE +void +eval_node_set_int_val( +/*==================*/ + que_node_t* node, /* in: expression node */ + lint val); /* in: value to set */ +/********************************************************************* +Gets an integer value from an expression node. */ +UNIV_INLINE +lint +eval_node_get_int_val( +/*==================*/ + /* out: integer value */ + que_node_t* node); /* in: expression node */ +/********************************************************************* +Copies a binary string value as the value of a query graph node. Allocates a +new buffer if necessary. */ +UNIV_INLINE +void +eval_node_copy_and_alloc_val( +/*=========================*/ + que_node_t* node, /* in: query graph node */ + const byte* str, /* in: binary string */ + ulint len); /* in: string length or UNIV_SQL_NULL */ +/********************************************************************* +Copies a query node value to another node. */ +UNIV_INLINE +void +eval_node_copy_val( +/*===============*/ + que_node_t* node1, /* in: node to copy to */ + que_node_t* node2); /* in: node to copy from */ +/********************************************************************* +Gets a iboolean value from a query node. */ +UNIV_INLINE +ibool +eval_node_get_ibool_val( +/*====================*/ + /* out: iboolean value */ + que_node_t* node); /* in: query graph node */ +/********************************************************************* +Evaluates a comparison node. */ +UNIV_INTERN +ibool +eval_cmp( +/*=====*/ + /* out: the result of the comparison */ + func_node_t* cmp_node); /* in: comparison node */ + + +#ifndef UNIV_NONINL +#include "eval0eval.ic" +#endif + +#endif === added file 'storage/xtradb/include/eval0eval.ic' --- a/storage/xtradb/include/eval0eval.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/eval0eval.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,250 @@ +/***************************************************************************** + +Copyright (c) 1997, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +SQL evaluator: evaluates simple data structures, like expressions, in +a query graph + +Created 12/29/1997 Heikki Tuuri +*******************************************************/ + +#include "que0que.h" +#include "rem0cmp.h" +#include "pars0grm.h" + +/********************************************************************* +Evaluates a function node. */ +UNIV_INTERN +void +eval_func( +/*======*/ + func_node_t* func_node); /* in: function node */ +/********************************************************************* +Allocate a buffer from global dynamic memory for a value of a que_node. +NOTE that this memory must be explicitly freed when the query graph is +freed. If the node already has allocated buffer, that buffer is freed +here. NOTE that this is the only function where dynamic memory should be +allocated for a query node val field. */ +UNIV_INTERN +byte* +eval_node_alloc_val_buf( +/*====================*/ + /* out: pointer to allocated buffer */ + que_node_t* node, /* in: query graph node; sets the val field + data field to point to the new buffer, and + len field equal to size */ + ulint size); /* in: buffer size */ + + +/********************************************************************* +Allocates a new buffer if needed. */ +UNIV_INLINE +byte* +eval_node_ensure_val_buf( +/*=====================*/ + /* out: pointer to buffer */ + que_node_t* node, /* in: query graph node; sets the val field + data field to point to the new buffer, and + len field equal to size */ + ulint size) /* in: buffer size */ +{ + dfield_t* dfield; + byte* data; + + dfield = que_node_get_val(node); + dfield_set_len(dfield, size); + + data = dfield_get_data(dfield); + + if (!data || que_node_get_val_buf_size(node) < size) { + + data = eval_node_alloc_val_buf(node, size); + } + + return(data); +} + +/********************************************************************* +Evaluates a symbol table symbol. */ +UNIV_INLINE +void +eval_sym( +/*=====*/ + sym_node_t* sym_node) /* in: symbol table node */ +{ + + ut_ad(que_node_get_type(sym_node) == QUE_NODE_SYMBOL); + + if (sym_node->indirection) { + /* The symbol table node is an alias for a variable or a + column */ + + dfield_copy_data(que_node_get_val(sym_node), + que_node_get_val(sym_node->indirection)); + } +} + +/********************************************************************* +Evaluates an expression. */ +UNIV_INLINE +void +eval_exp( +/*=====*/ + que_node_t* exp_node) /* in: expression */ +{ + if (que_node_get_type(exp_node) == QUE_NODE_SYMBOL) { + + eval_sym((sym_node_t*)exp_node); + + return; + } + + eval_func(exp_node); +} + +/********************************************************************* +Sets an integer value as the value of an expression node. */ +UNIV_INLINE +void +eval_node_set_int_val( +/*==================*/ + que_node_t* node, /* in: expression node */ + lint val) /* in: value to set */ +{ + dfield_t* dfield; + byte* data; + + dfield = que_node_get_val(node); + + data = dfield_get_data(dfield); + + if (data == NULL) { + data = eval_node_alloc_val_buf(node, 4); + } + + ut_ad(dfield_get_len(dfield) == 4); + + mach_write_to_4(data, (ulint)val); +} + +/********************************************************************* +Gets an integer non-SQL null value from an expression node. */ +UNIV_INLINE +lint +eval_node_get_int_val( +/*==================*/ + /* out: integer value */ + que_node_t* node) /* in: expression node */ +{ + dfield_t* dfield; + + dfield = que_node_get_val(node); + + ut_ad(dfield_get_len(dfield) == 4); + + return((int)mach_read_from_4(dfield_get_data(dfield))); +} + +/********************************************************************* +Gets a iboolean value from a query node. */ +UNIV_INLINE +ibool +eval_node_get_ibool_val( +/*====================*/ + /* out: iboolean value */ + que_node_t* node) /* in: query graph node */ +{ + dfield_t* dfield; + byte* data; + + dfield = que_node_get_val(node); + + data = dfield_get_data(dfield); + + ut_ad(data != NULL); + + return(mach_read_from_1(data)); +} + +/********************************************************************* +Sets a iboolean value as the value of a function node. */ +UNIV_INLINE +void +eval_node_set_ibool_val( +/*====================*/ + func_node_t* func_node, /* in: function node */ + ibool val) /* in: value to set */ +{ + dfield_t* dfield; + byte* data; + + dfield = que_node_get_val(func_node); + + data = dfield_get_data(dfield); + + if (data == NULL) { + /* Allocate 1 byte to hold the value */ + + data = eval_node_alloc_val_buf(func_node, 1); + } + + ut_ad(dfield_get_len(dfield) == 1); + + mach_write_to_1(data, val); +} + +/********************************************************************* +Copies a binary string value as the value of a query graph node. Allocates a +new buffer if necessary. */ +UNIV_INLINE +void +eval_node_copy_and_alloc_val( +/*=========================*/ + que_node_t* node, /* in: query graph node */ + const byte* str, /* in: binary string */ + ulint len) /* in: string length or UNIV_SQL_NULL */ +{ + byte* data; + + if (len == UNIV_SQL_NULL) { + dfield_set_len(que_node_get_val(node), len); + + return; + } + + data = eval_node_ensure_val_buf(node, len); + + ut_memcpy(data, str, len); +} + +/********************************************************************* +Copies a query node value to another node. */ +UNIV_INLINE +void +eval_node_copy_val( +/*===============*/ + que_node_t* node1, /* in: node to copy to */ + que_node_t* node2) /* in: node to copy from */ +{ + dfield_t* dfield2; + + dfield2 = que_node_get_val(node2); + + eval_node_copy_and_alloc_val(node1, dfield_get_data(dfield2), + dfield_get_len(dfield2)); +} === added file 'storage/xtradb/include/eval0proc.h' --- a/storage/xtradb/include/eval0proc.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/eval0proc.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,103 @@ +/***************************************************************************** + +Copyright (c) 1998, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Executes SQL stored procedures and their control structures + +Created 1/20/1998 Heikki Tuuri +*******************************************************/ + +#ifndef eval0proc_h +#define eval0proc_h + +#include "univ.i" +#include "que0types.h" +#include "pars0sym.h" +#include "pars0pars.h" + +/************************************************************************** +Performs an execution step of a procedure node. */ +UNIV_INLINE +que_thr_t* +proc_step( +/*======*/ + /* out: query thread to run next or NULL */ + que_thr_t* thr); /* in: query thread */ +/************************************************************************** +Performs an execution step of an if-statement node. */ +UNIV_INTERN +que_thr_t* +if_step( +/*====*/ + /* out: query thread to run next or NULL */ + que_thr_t* thr); /* in: query thread */ +/************************************************************************** +Performs an execution step of a while-statement node. */ +UNIV_INTERN +que_thr_t* +while_step( +/*=======*/ + /* out: query thread to run next or NULL */ + que_thr_t* thr); /* in: query thread */ +/************************************************************************** +Performs an execution step of a for-loop node. */ +UNIV_INTERN +que_thr_t* +for_step( +/*=====*/ + /* out: query thread to run next or NULL */ + que_thr_t* thr); /* in: query thread */ +/************************************************************************** +Performs an execution step of an assignment statement node. */ +UNIV_INTERN +que_thr_t* +assign_step( +/*========*/ + /* out: query thread to run next or NULL */ + que_thr_t* thr); /* in: query thread */ +/************************************************************************** +Performs an execution step of a procedure call node. */ +UNIV_INLINE +que_thr_t* +proc_eval_step( +/*===========*/ + /* out: query thread to run next or NULL */ + que_thr_t* thr); /* in: query thread */ +/************************************************************************** +Performs an execution step of an exit statement node. */ +UNIV_INTERN +que_thr_t* +exit_step( +/*======*/ + /* out: query thread to run next or NULL */ + que_thr_t* thr); /* in: query thread */ +/************************************************************************** +Performs an execution step of a return-statement node. */ +UNIV_INTERN +que_thr_t* +return_step( +/*========*/ + /* out: query thread to run next or NULL */ + que_thr_t* thr); /* in: query thread */ + + +#ifndef UNIV_NONINL +#include "eval0proc.ic" +#endif + +#endif === added file 'storage/xtradb/include/eval0proc.ic' --- a/storage/xtradb/include/eval0proc.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/eval0proc.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,87 @@ +/***************************************************************************** + +Copyright (c) 1998, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Executes SQL stored procedures and their control structures + +Created 1/20/1998 Heikki Tuuri +*******************************************************/ + +#include "pars0pars.h" +#include "que0que.h" +#include "eval0eval.h" + +/************************************************************************** +Performs an execution step of a procedure node. */ +UNIV_INLINE +que_thr_t* +proc_step( +/*======*/ + /* out: query thread to run next or NULL */ + que_thr_t* thr) /* in: query thread */ +{ + proc_node_t* node; + + ut_ad(thr); + + node = thr->run_node; + ut_ad(que_node_get_type(node) == QUE_NODE_PROC); + + if (thr->prev_node == que_node_get_parent(node)) { + /* Start execution from the first statement in the statement + list */ + + thr->run_node = node->stat_list; + } else { + /* Move to the next statement */ + ut_ad(que_node_get_next(thr->prev_node) == NULL); + + thr->run_node = NULL; + } + + if (thr->run_node == NULL) { + thr->run_node = que_node_get_parent(node); + } + + return(thr); +} + +/************************************************************************** +Performs an execution step of a procedure call node. */ +UNIV_INLINE +que_thr_t* +proc_eval_step( +/*===========*/ + /* out: query thread to run next or NULL */ + que_thr_t* thr) /* in: query thread */ +{ + func_node_t* node; + + ut_ad(thr); + + node = thr->run_node; + ut_ad(que_node_get_type(node) == QUE_NODE_FUNC); + + /* Evaluate the procedure */ + + eval_exp(node); + + thr->run_node = que_node_get_parent(node); + + return(thr); +} === added file 'storage/xtradb/include/fil0fil.h' --- a/storage/xtradb/include/fil0fil.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/fil0fil.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,711 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +The low-level file system + +Created 10/25/1995 Heikki Tuuri +*******************************************************/ + +#ifndef fil0fil_h +#define fil0fil_h + +#include "univ.i" +#include "sync0rw.h" +#include "dict0types.h" +#include "ut0byte.h" +#include "os0file.h" + +/* When mysqld is run, the default directory "." is the mysqld datadir, but in +ibbackup we must set it explicitly; the patgh must NOT contain the trailing +'/' or '\' */ +extern const char* fil_path_to_mysql_datadir; + +/* Initial size of a single-table tablespace in pages */ +#define FIL_IBD_FILE_INITIAL_SIZE 4 + +/* 'null' (undefined) page offset in the context of file spaces */ +#define FIL_NULL ULINT32_UNDEFINED + +/* Space address data type; this is intended to be used when +addresses accurate to a byte are stored in file pages. If the page part +of the address is FIL_NULL, the address is considered undefined. */ + +typedef byte fil_faddr_t; /* 'type' definition in C: an address + stored in a file page is a string of bytes */ +#define FIL_ADDR_PAGE 0 /* first in address is the page offset */ +#define FIL_ADDR_BYTE 4 /* then comes 2-byte byte offset within page*/ + +#define FIL_ADDR_SIZE 6 /* address size is 6 bytes */ + +/* A struct for storing a space address FIL_ADDR, when it is used +in C program data structures. */ + +typedef struct fil_addr_struct fil_addr_t; +struct fil_addr_struct{ + ulint page; /* page number within a space */ + ulint boffset; /* byte offset within the page */ +}; + +/* Null file address */ +extern fil_addr_t fil_addr_null; + +/* The byte offsets on a file page for various variables */ +#define FIL_PAGE_SPACE_OR_CHKSUM 0 /* in < MySQL-4.0.14 space id the + page belongs to (== 0) but in later + versions the 'new' checksum of the + page */ +#define FIL_PAGE_OFFSET 4 /* page offset inside space */ +#define FIL_PAGE_PREV 8 /* if there is a 'natural' predecessor + of the page, its offset. + Otherwise FIL_NULL. + This field is not set on BLOB pages, + which are stored as a singly-linked + list. See also FIL_PAGE_NEXT. */ +#define FIL_PAGE_NEXT 12 /* if there is a 'natural' successor + of the page, its offset. + Otherwise FIL_NULL. + B-tree index pages + (FIL_PAGE_TYPE contains FIL_PAGE_INDEX) + on the same PAGE_LEVEL are maintained + as a doubly linked list via + FIL_PAGE_PREV and FIL_PAGE_NEXT + in the collation order of the + smallest user record on each page. */ +#define FIL_PAGE_LSN 16 /* lsn of the end of the newest + modification log record to the page */ +#define FIL_PAGE_TYPE 24 /* file page type: FIL_PAGE_INDEX,..., + 2 bytes. + + The contents of this field can only + be trusted in the following case: + if the page is an uncompressed + B-tree index page, then it is + guaranteed that the value is + FIL_PAGE_INDEX. + The opposite does not hold. + + In tablespaces created by + MySQL/InnoDB 5.1.7 or later, the + contents of this field is valid + for all uncompressed pages. */ +#define FIL_PAGE_FILE_FLUSH_LSN 26 /* this is only defined for the + first page in a data file: the file + has been flushed to disk at least up + to this lsn */ +#define FIL_PAGE_ARCH_LOG_NO_OR_SPACE_ID 34 /* starting from 4.1.x this + contains the space id of the page */ +#define FIL_PAGE_DATA 38 /* start of the data on the page */ + +/* File page trailer */ +#define FIL_PAGE_END_LSN_OLD_CHKSUM 8 /* the low 4 bytes of this are used + to store the page checksum, the + last 4 bytes should be identical + to the last 4 bytes of FIL_PAGE_LSN */ +#define FIL_PAGE_DATA_END 8 + +/* File page types (values of FIL_PAGE_TYPE) */ +#define FIL_PAGE_INDEX 17855 /* B-tree node */ +#define FIL_PAGE_UNDO_LOG 2 /* Undo log page */ +#define FIL_PAGE_INODE 3 /* Index node */ +#define FIL_PAGE_IBUF_FREE_LIST 4 /* Insert buffer free list */ +/* File page types introduced in MySQL/InnoDB 5.1.7 */ +#define FIL_PAGE_TYPE_ALLOCATED 0 /* Freshly allocated page */ +#define FIL_PAGE_IBUF_BITMAP 5 /* Insert buffer bitmap */ +#define FIL_PAGE_TYPE_SYS 6 /* System page */ +#define FIL_PAGE_TYPE_TRX_SYS 7 /* Transaction system data */ +#define FIL_PAGE_TYPE_FSP_HDR 8 /* File space header */ +#define FIL_PAGE_TYPE_XDES 9 /* Extent descriptor page */ +#define FIL_PAGE_TYPE_BLOB 10 /* Uncompressed BLOB page */ +#define FIL_PAGE_TYPE_ZBLOB 11 /* First compressed BLOB page */ +#define FIL_PAGE_TYPE_ZBLOB2 12 /* Subsequent compressed BLOB page */ + +/* Space types */ +#define FIL_TABLESPACE 501 +#define FIL_LOG 502 + +extern ulint fil_n_log_flushes; + +extern ulint fil_n_pending_log_flushes; +extern ulint fil_n_pending_tablespace_flushes; + + +/*********************************************************************** +Returns the version number of a tablespace, -1 if not found. */ +UNIV_INTERN +ib_int64_t +fil_space_get_version( +/*==================*/ + /* out: version number, -1 if the tablespace does not + exist in the memory cache */ + ulint id); /* in: space id */ +/*********************************************************************** +Returns the latch of a file space. */ +UNIV_INTERN +rw_lock_t* +fil_space_get_latch( +/*================*/ + /* out: latch protecting storage allocation */ + ulint id, /* in: space id */ + ulint* zip_size);/* out: compressed page size, or + 0 for uncompressed tablespaces */ +/*********************************************************************** +Returns the type of a file space. */ +UNIV_INTERN +ulint +fil_space_get_type( +/*===============*/ + /* out: FIL_TABLESPACE or FIL_LOG */ + ulint id); /* in: space id */ +/*********************************************************************** +Appends a new file to the chain of files of a space. File must be closed. */ +UNIV_INTERN +void +fil_node_create( +/*============*/ + const char* name, /* in: file name (file must be closed) */ + ulint size, /* in: file size in database blocks, rounded + downwards to an integer */ + ulint id, /* in: space id where to append */ + ibool is_raw);/* in: TRUE if a raw device or + a raw disk partition */ +#ifdef UNIV_LOG_ARCHIVE +/******************************************************************** +Drops files from the start of a file space, so that its size is cut by +the amount given. */ +UNIV_INTERN +void +fil_space_truncate_start( +/*=====================*/ + ulint id, /* in: space id */ + ulint trunc_len); /* in: truncate by this much; it is an error + if this does not equal to the combined size of + some initial files in the space */ +#endif /* UNIV_LOG_ARCHIVE */ +/*********************************************************************** +Creates a space memory object and puts it to the 'fil system' hash table. If +there is an error, prints an error message to the .err log. */ +UNIV_INTERN +ibool +fil_space_create( +/*=============*/ + /* out: TRUE if success */ + const char* name, /* in: space name */ + ulint id, /* in: space id */ + ulint zip_size,/* in: compressed page size, or + 0 for uncompressed tablespaces */ + ulint purpose);/* in: FIL_TABLESPACE, or FIL_LOG if log */ +/*********************************************************************** +Frees a space object from a the tablespace memory cache. Closes the files in +the chain but does not delete them. */ +UNIV_INTERN +ibool +fil_space_free( +/*===========*/ + /* out: TRUE if success */ + ulint id); /* in: space id */ +/*********************************************************************** +Returns the size of the space in pages. The tablespace must be cached in the +memory cache. */ +UNIV_INTERN +ulint +fil_space_get_size( +/*===============*/ + /* out: space size, 0 if space not found */ + ulint id); /* in: space id */ +/*********************************************************************** +Returns the flags of the space. The tablespace must be cached +in the memory cache. */ +UNIV_INTERN +ulint +fil_space_get_flags( +/*================*/ + /* out: flags, ULINT_UNDEFINED if space not found */ + ulint id); /* in: space id */ +/*********************************************************************** +Returns the compressed page size of the space, or 0 if the space +is not compressed. The tablespace must be cached in the memory cache. */ +UNIV_INTERN +ulint +fil_space_get_zip_size( +/*===================*/ + /* out: compressed page size, ULINT_UNDEFINED + if space not found */ + ulint id); /* in: space id */ +/*********************************************************************** +Checks if the pair space, page_no refers to an existing page in a tablespace +file space. The tablespace must be cached in the memory cache. */ +UNIV_INTERN +ibool +fil_check_adress_in_tablespace( +/*===========================*/ + /* out: TRUE if the address is meaningful */ + ulint id, /* in: space id */ + ulint page_no);/* in: page number */ +/******************************************************************** +Initializes the tablespace memory cache. */ +UNIV_INTERN +void +fil_init( +/*=====*/ + ulint max_n_open); /* in: max number of open files */ +/*********************************************************************** +Opens all log files and system tablespace data files. They stay open until the +database server shutdown. This should be called at a server startup after the +space objects for the log and the system tablespace have been created. The +purpose of this operation is to make sure we never run out of file descriptors +if we need to read from the insert buffer or to write to the log. */ +UNIV_INTERN +void +fil_open_log_and_system_tablespace_files(void); +/*==========================================*/ +/*********************************************************************** +Closes all open files. There must not be any pending i/o's or not flushed +modifications in the files. */ +UNIV_INTERN +void +fil_close_all_files(void); +/*=====================*/ +/*********************************************************************** +Sets the max tablespace id counter if the given number is bigger than the +previous value. */ +UNIV_INTERN +void +fil_set_max_space_id_if_bigger( +/*===========================*/ + ulint max_id);/* in: maximum known id */ +/******************************************************************** +Writes the flushed lsn and the latest archived log number to the page +header of the first page of each data file in the system tablespace. */ +UNIV_INTERN +ulint +fil_write_flushed_lsn_to_data_files( +/*================================*/ + /* out: DB_SUCCESS or error number */ + ib_uint64_t lsn, /* in: lsn to write */ + ulint arch_log_no); /* in: latest archived log + file number */ +/*********************************************************************** +Reads the flushed lsn and arch no fields from a data file at database +startup. */ +UNIV_INTERN +void +fil_read_flushed_lsn_and_arch_log_no( +/*=================================*/ + os_file_t data_file, /* in: open data file */ + ibool one_read_already, /* in: TRUE if min and max + parameters below already + contain sensible data */ +#ifdef UNIV_LOG_ARCHIVE + ulint* min_arch_log_no, /* in/out: */ + ulint* max_arch_log_no, /* in/out: */ +#endif /* UNIV_LOG_ARCHIVE */ + ib_uint64_t* min_flushed_lsn, /* in/out: */ + ib_uint64_t* max_flushed_lsn); /* in/out: */ +/*********************************************************************** +Increments the count of pending insert buffer page merges, if space is not +being deleted. */ +UNIV_INTERN +ibool +fil_inc_pending_ibuf_merges( +/*========================*/ + /* out: TRUE if being deleted, and ibuf merges should + be skipped */ + ulint id); /* in: space id */ +/*********************************************************************** +Decrements the count of pending insert buffer page merges. */ +UNIV_INTERN +void +fil_decr_pending_ibuf_merges( +/*=========================*/ + ulint id); /* in: space id */ +/*********************************************************************** +Parses the body of a log record written about an .ibd file operation. That is, +the log record part after the standard (type, space id, page no) header of the +log record. + +If desired, also replays the delete or rename operation if the .ibd file +exists and the space id in it matches. Replays the create operation if a file +at that path does not exist yet. If the database directory for the file to be +created does not exist, then we create the directory, too. + +Note that ibbackup --apply-log sets fil_path_to_mysql_datadir to point to the +datadir that we should use in replaying the file operations. */ +UNIV_INTERN +byte* +fil_op_log_parse_or_replay( +/*=======================*/ + /* out: end of log record, or NULL if the + record was not completely contained between + ptr and end_ptr */ + byte* ptr, /* in: buffer containing the log record body, + or an initial segment of it, if the record does + not fir completely between ptr and end_ptr */ + byte* end_ptr, /* in: buffer end */ + ulint type, /* in: the type of this log record */ + ulint space_id); /* in: the space id of the tablespace in + question, or 0 if the log record should + only be parsed but not replayed */ +/*********************************************************************** +Deletes a single-table tablespace. The tablespace must be cached in the +memory cache. */ +UNIV_INTERN +ibool +fil_delete_tablespace( +/*==================*/ + /* out: TRUE if success */ + ulint id); /* in: space id */ +/*********************************************************************** +Discards a single-table tablespace. The tablespace must be cached in the +memory cache. Discarding is like deleting a tablespace, but +1) we do not drop the table from the data dictionary; +2) we remove all insert buffer entries for the tablespace immediately; in DROP +TABLE they are only removed gradually in the background; +3) when the user does IMPORT TABLESPACE, the tablespace will have the same id +as it originally had. */ +UNIV_INTERN +ibool +fil_discard_tablespace( +/*===================*/ + /* out: TRUE if success */ + ulint id); /* in: space id */ +/*********************************************************************** +Renames a single-table tablespace. The tablespace must be cached in the +tablespace memory cache. */ +UNIV_INTERN +ibool +fil_rename_tablespace( +/*==================*/ + /* out: TRUE if success */ + const char* old_name, /* in: old table name in the standard + databasename/tablename format of + InnoDB, or NULL if we do the rename + based on the space id only */ + ulint id, /* in: space id */ + const char* new_name); /* in: new table name in the standard + databasename/tablename format + of InnoDB */ + +/*********************************************************************** +Creates a new single-table tablespace to a database directory of MySQL. +Database directories are under the 'datadir' of MySQL. The datadir is the +directory of a running mysqld program. We can refer to it by simply the +path '.'. Tables created with CREATE TEMPORARY TABLE we place in the temp +dir of the mysqld server. */ +UNIV_INTERN +ulint +fil_create_new_single_table_tablespace( +/*===================================*/ + /* out: DB_SUCCESS or error code */ + ulint* space_id, /* in/out: space id; if this is != 0, + then this is an input parameter, + otherwise output */ + const char* tablename, /* in: the table name in the usual + databasename/tablename format + of InnoDB, or a dir path to a temp + table */ + ibool is_temp, /* in: TRUE if a table created with + CREATE TEMPORARY TABLE */ + ulint flags, /* in: tablespace flags */ + ulint size); /* in: the initial size of the + tablespace file in pages, + must be >= FIL_IBD_FILE_INITIAL_SIZE */ +/************************************************************************ +Tries to open a single-table tablespace and optionally checks the space id is +right in it. If does not succeed, prints an error message to the .err log. This +function is used to open a tablespace when we start up mysqld, and also in +IMPORT TABLESPACE. +NOTE that we assume this operation is used either at the database startup +or under the protection of the dictionary mutex, so that two users cannot +race here. This operation does not leave the file associated with the +tablespace open, but closes it after we have looked at the space id in it. */ +UNIV_INTERN +ibool +fil_open_single_table_tablespace( +/*=============================*/ + /* out: TRUE if success */ + ibool check_space_id, /* in: should we check that the space + id in the file is right; we assume + that this function runs much faster + if no check is made, since accessing + the file inode probably is much + faster (the OS caches them) than + accessing the first page of the file */ + ulint id, /* in: space id */ + ulint flags, /* in: tablespace flags */ + const char* name); /* in: table name in the + databasename/tablename format */ +/************************************************************************ +It is possible, though very improbable, that the lsn's in the tablespace to be +imported have risen above the current system lsn, if a lengthy purge, ibuf +merge, or rollback was performed on a backup taken with ibbackup. If that is +the case, reset page lsn's in the file. We assume that mysqld was shut down +after it performed these cleanup operations on the .ibd file, so that it at +the shutdown stamped the latest lsn to the FIL_PAGE_FILE_FLUSH_LSN in the +first page of the .ibd file, and we can determine whether we need to reset the +lsn's just by looking at that flush lsn. */ +UNIV_INTERN +ibool +fil_reset_too_high_lsns( +/*====================*/ + /* out: TRUE if success */ + const char* name, /* in: table name in the + databasename/tablename format */ + ib_uint64_t current_lsn); /* in: reset lsn's if the lsn stamped + to FIL_PAGE_FILE_FLUSH_LSN in the + first page is too high */ +/************************************************************************ +At the server startup, if we need crash recovery, scans the database +directories under the MySQL datadir, looking for .ibd files. Those files are +single-table tablespaces. We need to know the space id in each of them so that +we know into which file we should look to check the contents of a page stored +in the doublewrite buffer, also to know where to apply log records where the +space id is != 0. */ +UNIV_INTERN +ulint +fil_load_single_table_tablespaces(void); +/*===================================*/ + /* out: DB_SUCCESS or error number */ +/************************************************************************ +If we need crash recovery, and we have called +fil_load_single_table_tablespaces() and dict_load_single_table_tablespaces(), +we can call this function to print an error message of orphaned .ibd files +for which there is not a data dictionary entry with a matching table name +and space id. */ +UNIV_INTERN +void +fil_print_orphaned_tablespaces(void); +/*================================*/ +/*********************************************************************** +Returns TRUE if a single-table tablespace does not exist in the memory cache, +or is being deleted there. */ +UNIV_INTERN +ibool +fil_tablespace_deleted_or_being_deleted_in_mem( +/*===========================================*/ + /* out: TRUE if does not exist or is being\ + deleted */ + ulint id, /* in: space id */ + ib_int64_t version);/* in: tablespace_version should be this; if + you pass -1 as the value of this, then this + parameter is ignored */ +/*********************************************************************** +Returns TRUE if a single-table tablespace exists in the memory cache. */ +UNIV_INTERN +ibool +fil_tablespace_exists_in_mem( +/*=========================*/ + /* out: TRUE if exists */ + ulint id); /* in: space id */ +/*********************************************************************** +Returns TRUE if a matching tablespace exists in the InnoDB tablespace memory +cache. Note that if we have not done a crash recovery at the database startup, +there may be many tablespaces which are not yet in the memory cache. */ +UNIV_INTERN +ibool +fil_space_for_table_exists_in_mem( +/*==============================*/ + /* out: TRUE if a matching tablespace + exists in the memory cache */ + ulint id, /* in: space id */ + const char* name, /* in: table name in the standard + 'databasename/tablename' format or + the dir path to a temp table */ + ibool is_temp, /* in: TRUE if created with CREATE + TEMPORARY TABLE */ + ibool mark_space, /* in: in crash recovery, at database + startup we mark all spaces which have + an associated table in the InnoDB + data dictionary, so that + we can print a warning about orphaned + tablespaces */ + ibool print_error_if_does_not_exist); + /* in: print detailed error + information to the .err log if a + matching tablespace is not found from + memory */ +/************************************************************************** +Tries to extend a data file so that it would accommodate the number of pages +given. The tablespace must be cached in the memory cache. If the space is big +enough already, does nothing. */ +UNIV_INTERN +ibool +fil_extend_space_to_desired_size( +/*=============================*/ + /* out: TRUE if success */ + ulint* actual_size, /* out: size of the space after extension; + if we ran out of disk space this may be lower + than the desired size */ + ulint space_id, /* in: space id */ + ulint size_after_extend);/* in: desired size in pages after the + extension; if the current space size is bigger + than this already, the function does nothing */ +#ifdef UNIV_HOTBACKUP +/************************************************************************ +Extends all tablespaces to the size stored in the space header. During the +ibbackup --apply-log phase we extended the spaces on-demand so that log records +could be appllied, but that may have left spaces still too small compared to +the size stored in the space header. */ +UNIV_INTERN +void +fil_extend_tablespaces_to_stored_len(void); +/*======================================*/ +#endif +/*********************************************************************** +Tries to reserve free extents in a file space. */ +UNIV_INTERN +ibool +fil_space_reserve_free_extents( +/*===========================*/ + /* out: TRUE if succeed */ + ulint id, /* in: space id */ + ulint n_free_now, /* in: number of free extents now */ + ulint n_to_reserve); /* in: how many one wants to reserve */ +/*********************************************************************** +Releases free extents in a file space. */ +UNIV_INTERN +void +fil_space_release_free_extents( +/*===========================*/ + ulint id, /* in: space id */ + ulint n_reserved); /* in: how many one reserved */ +/*********************************************************************** +Gets the number of reserved extents. If the database is silent, this number +should be zero. */ +UNIV_INTERN +ulint +fil_space_get_n_reserved_extents( +/*=============================*/ + ulint id); /* in: space id */ +/************************************************************************ +Reads or writes data. This operation is asynchronous (aio). */ +UNIV_INTERN +ulint +fil_io( +/*===*/ + /* out: DB_SUCCESS, or DB_TABLESPACE_DELETED + if we are trying to do i/o on a tablespace + which does not exist */ + ulint type, /* in: OS_FILE_READ or OS_FILE_WRITE, + ORed to OS_FILE_LOG, if a log i/o + and ORed to OS_AIO_SIMULATED_WAKE_LATER + if simulated aio and we want to post a + batch of i/os; NOTE that a simulated batch + may introduce hidden chances of deadlocks, + because i/os are not actually handled until + all have been posted: use with great + caution! */ + ibool sync, /* in: TRUE if synchronous aio is desired */ + ulint space_id, /* in: space id */ + ulint zip_size, /* in: compressed page size in bytes; + 0 for uncompressed pages */ + ulint block_offset, /* in: offset in number of blocks */ + ulint byte_offset, /* in: remainder of offset in bytes; in + aio this must be divisible by the OS block + size */ + ulint len, /* in: how many bytes to read or write; this + must not cross a file boundary; in aio this + must be a block size multiple */ + void* buf, /* in/out: buffer where to store read data + or from where to write; in aio this must be + appropriately aligned */ + void* message); /* in: message for aio handler if non-sync + aio used, else ignored */ +/************************************************************************** +Waits for an aio operation to complete. This function is used to write the +handler for completed requests. The aio array of pending requests is divided +into segments (see os0file.c for more info). The thread specifies which +segment it wants to wait for. */ +UNIV_INTERN +void +fil_aio_wait( +/*=========*/ + ulint segment); /* in: the number of the segment in the aio + array to wait for */ +/************************************************************************** +Flushes to disk possible writes cached by the OS. If the space does not exist +or is being dropped, does not do anything. */ +UNIV_INTERN +void +fil_flush( +/*======*/ + ulint space_id); /* in: file space id (this can be a group of + log files or a tablespace of the database) */ +/************************************************************************** +Flushes to disk writes in file spaces of the given type possibly cached by +the OS. */ +UNIV_INTERN +void +fil_flush_file_spaces( +/*==================*/ + ulint purpose); /* in: FIL_TABLESPACE, FIL_LOG */ +/********************************************************************** +Checks the consistency of the tablespace cache. */ +UNIV_INTERN +ibool +fil_validate(void); +/*==============*/ + /* out: TRUE if ok */ +/************************************************************************ +Returns TRUE if file address is undefined. */ +UNIV_INTERN +ibool +fil_addr_is_null( +/*=============*/ + /* out: TRUE if undefined */ + fil_addr_t addr); /* in: address */ +/************************************************************************ +Accessor functions for a file page */ +UNIV_INTERN +ulint +fil_page_get_prev(const byte* page); +ulint +fil_page_get_next(const byte* page); +/************************************************************************* +Sets the file page type. */ +UNIV_INTERN +void +fil_page_set_type( +/*==============*/ + byte* page, /* in: file page */ + ulint type); /* in: type */ +/************************************************************************* +Gets the file page type. */ +UNIV_INTERN +ulint +fil_page_get_type( +/*==============*/ + /* out: type; NOTE that if the type + has not been written to page, the + return value not defined */ + const byte* page); /* in: file page */ + +/************************************************************************* +Return local hash table informations. */ + +ulint +fil_system_hash_cells(void); +/*========================*/ + +ulint +fil_system_hash_nodes(void); +/*========================*/ + +typedef struct fil_space_struct fil_space_t; + +#endif === added file 'storage/xtradb/include/fsp0fsp.h' --- a/storage/xtradb/include/fsp0fsp.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/fsp0fsp.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,433 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +File space management + +Created 12/18/1995 Heikki Tuuri +*******************************************************/ + +#ifndef fsp0fsp_h +#define fsp0fsp_h + +#include "univ.i" + +#include "mtr0mtr.h" +#include "fut0lst.h" +#include "ut0byte.h" +#include "page0types.h" + +/* If records are inserted in order, there are the following +flags to tell this (their type is made byte for the compiler +to warn if direction and hint parameters are switched in +fseg_alloc_free_page): */ +#define FSP_UP ((byte)111) /* alphabetically upwards */ +#define FSP_DOWN ((byte)112) /* alphabetically downwards */ +#define FSP_NO_DIR ((byte)113) /* no order */ + +/* File space extent size (one megabyte) in pages */ +#define FSP_EXTENT_SIZE (1 << (20 - UNIV_PAGE_SIZE_SHIFT)) + +/* On a page of any file segment, data may be put starting from this offset: */ +#define FSEG_PAGE_DATA FIL_PAGE_DATA + +/* File segment header which points to the inode describing the file segment */ +typedef byte fseg_header_t; + +#define FSEG_HDR_SPACE 0 /* space id of the inode */ +#define FSEG_HDR_PAGE_NO 4 /* page number of the inode */ +#define FSEG_HDR_OFFSET 8 /* byte offset of the inode */ + +#define FSEG_HEADER_SIZE 10 + +/************************************************************************** +Initializes the file space system. */ +UNIV_INTERN +void +fsp_init(void); +/*==========*/ +/************************************************************************** +Gets the current free limit of the system tablespace. The free limit +means the place of the first page which has never been put to the the +free list for allocation. The space above that address is initialized +to zero. Sets also the global variable log_fsp_current_free_limit. */ +UNIV_INTERN +ulint +fsp_header_get_free_limit(void); +/*===========================*/ + /* out: free limit in megabytes */ +/************************************************************************** +Gets the size of the system tablespace from the tablespace header. If +we do not have an auto-extending data file, this should be equal to +the size of the data files. If there is an auto-extending data file, +this can be smaller. */ +UNIV_INTERN +ulint +fsp_header_get_tablespace_size(void); +/*================================*/ + /* out: size in pages */ +/************************************************************************** +Reads the file space size stored in the header page. */ +UNIV_INTERN +ulint +fsp_get_size_low( +/*=============*/ + /* out: tablespace size stored in the space header */ + page_t* page); /* in: header page (page 0 in the tablespace) */ +/************************************************************************** +Reads the space id from the first page of a tablespace. */ +UNIV_INTERN +ulint +fsp_header_get_space_id( +/*====================*/ + /* out: space id, ULINT UNDEFINED if error */ + const page_t* page); /* in: first page of a tablespace */ +/************************************************************************** +Reads the space flags from the first page of a tablespace. */ +UNIV_INTERN +ulint +fsp_header_get_flags( +/*=================*/ + /* out: flags */ + const page_t* page); /* in: first page of a tablespace */ +/************************************************************************** +Reads the compressed page size from the first page of a tablespace. */ +UNIV_INTERN +ulint +fsp_header_get_zip_size( +/*====================*/ + /* out: compressed page size in bytes, + or 0 if uncompressed */ + const page_t* page); /* in: first page of a tablespace */ +/************************************************************************** +Writes the space id and compressed page size to a tablespace header. +This function is used past the buffer pool when we in fil0fil.c create +a new single-table tablespace. */ +UNIV_INTERN +void +fsp_header_init_fields( +/*===================*/ + page_t* page, /* in/out: first page in the space */ + ulint space_id, /* in: space id */ + ulint flags); /* in: tablespace flags (FSP_SPACE_FLAGS): + 0, or table->flags if newer than COMPACT */ +/************************************************************************** +Initializes the space header of a new created space and creates also the +insert buffer tree root if space == 0. */ +UNIV_INTERN +void +fsp_header_init( +/*============*/ + ulint space, /* in: space id */ + ulint size, /* in: current size in blocks */ + mtr_t* mtr); /* in: mini-transaction handle */ +/************************************************************************** +Increases the space size field of a space. */ +UNIV_INTERN +void +fsp_header_inc_size( +/*================*/ + ulint space, /* in: space id */ + ulint size_inc,/* in: size increment in pages */ + mtr_t* mtr); /* in: mini-transaction handle */ +/************************************************************************** +Creates a new segment. */ +UNIV_INTERN +buf_block_t* +fseg_create( +/*========*/ + /* out: the block where the segment header is placed, + x-latched, NULL if could not create segment + because of lack of space */ + ulint space, /* in: space id */ + ulint page, /* in: page where the segment header is placed: if + this is != 0, the page must belong to another segment, + if this is 0, a new page will be allocated and it + will belong to the created segment */ + ulint byte_offset, /* in: byte offset of the created segment header + on the page */ + mtr_t* mtr); /* in: mtr */ +/************************************************************************** +Creates a new segment. */ +UNIV_INTERN +buf_block_t* +fseg_create_general( +/*================*/ + /* out: the block where the segment header is placed, + x-latched, NULL if could not create segment + because of lack of space */ + ulint space, /* in: space id */ + ulint page, /* in: page where the segment header is placed: if + this is != 0, the page must belong to another segment, + if this is 0, a new page will be allocated and it + will belong to the created segment */ + ulint byte_offset, /* in: byte offset of the created segment header + on the page */ + ibool has_done_reservation, /* in: TRUE if the caller has already + done the reservation for the pages with + fsp_reserve_free_extents (at least 2 extents: one for + the inode and the other for the segment) then there is + no need to do the check for this individual + operation */ + mtr_t* mtr); /* in: mtr */ +/************************************************************************** +Calculates the number of pages reserved by a segment, and how many pages are +currently used. */ +UNIV_INTERN +ulint +fseg_n_reserved_pages( +/*==================*/ + /* out: number of reserved pages */ + fseg_header_t* header, /* in: segment header */ + ulint* used, /* out: number of pages used (<= reserved) */ + mtr_t* mtr); /* in: mtr handle */ +/************************************************************************** +Allocates a single free page from a segment. This function implements +the intelligent allocation strategy which tries to minimize +file space fragmentation. */ +UNIV_INTERN +ulint +fseg_alloc_free_page( +/*=================*/ + /* out: the allocated page offset + FIL_NULL if no page could be allocated */ + fseg_header_t* seg_header, /* in: segment header */ + ulint hint, /* in: hint of which page would be desirable */ + byte direction, /* in: if the new page is needed because + of an index page split, and records are + inserted there in order, into which + direction they go alphabetically: FSP_DOWN, + FSP_UP, FSP_NO_DIR */ + mtr_t* mtr); /* in: mtr handle */ +/************************************************************************** +Allocates a single free page from a segment. This function implements +the intelligent allocation strategy which tries to minimize file space +fragmentation. */ +UNIV_INTERN +ulint +fseg_alloc_free_page_general( +/*=========================*/ + /* out: allocated page offset, FIL_NULL if no + page could be allocated */ + fseg_header_t* seg_header,/* in: segment header */ + ulint hint, /* in: hint of which page would be desirable */ + byte direction,/* in: if the new page is needed because + of an index page split, and records are + inserted there in order, into which + direction they go alphabetically: FSP_DOWN, + FSP_UP, FSP_NO_DIR */ + ibool has_done_reservation, /* in: TRUE if the caller has + already done the reservation for the page + with fsp_reserve_free_extents, then there + is no need to do the check for this individual + page */ + mtr_t* mtr); /* in: mtr handle */ +/************************************************************************** +Reserves free pages from a tablespace. All mini-transactions which may +use several pages from the tablespace should call this function beforehand +and reserve enough free extents so that they certainly will be able +to do their operation, like a B-tree page split, fully. Reservations +must be released with function fil_space_release_free_extents! + +The alloc_type below has the following meaning: FSP_NORMAL means an +operation which will probably result in more space usage, like an +insert in a B-tree; FSP_UNDO means allocation to undo logs: if we are +deleting rows, then this allocation will in the long run result in +less space usage (after a purge); FSP_CLEANING means allocation done +in a physical record delete (like in a purge) or other cleaning operation +which will result in less space usage in the long run. We prefer the latter +two types of allocation: when space is scarce, FSP_NORMAL allocations +will not succeed, but the latter two allocations will succeed, if possible. +The purpose is to avoid dead end where the database is full but the +user cannot free any space because these freeing operations temporarily +reserve some space. + +Single-table tablespaces whose size is < 32 pages are a special case. In this +function we would liberally reserve several 64 page extents for every page +split or merge in a B-tree. But we do not want to waste disk space if the table +only occupies < 32 pages. That is why we apply different rules in that special +case, just ensuring that there are 3 free pages available. */ +UNIV_INTERN +ibool +fsp_reserve_free_extents( +/*=====================*/ + /* out: TRUE if we were able to make the reservation */ + ulint* n_reserved,/* out: number of extents actually reserved; if we + return TRUE and the tablespace size is < 64 pages, + then this can be 0, otherwise it is n_ext */ + ulint space, /* in: space id */ + ulint n_ext, /* in: number of extents to reserve */ + ulint alloc_type,/* in: FSP_NORMAL, FSP_UNDO, or FSP_CLEANING */ + mtr_t* mtr); /* in: mtr */ +/************************************************************************** +This function should be used to get information on how much we still +will be able to insert new data to the database without running out the +tablespace. Only free extents are taken into account and we also subtract +the safety margin required by the above function fsp_reserve_free_extents. */ +UNIV_INTERN +ullint +fsp_get_available_space_in_free_extents( +/*====================================*/ + /* out: available space in kB */ + ulint space); /* in: space id */ +/************************************************************************** +Frees a single page of a segment. */ +UNIV_INTERN +void +fseg_free_page( +/*===========*/ + fseg_header_t* seg_header, /* in: segment header */ + ulint space, /* in: space id */ + ulint page, /* in: page offset */ + mtr_t* mtr); /* in: mtr handle */ +/*********************************************************************** +Frees a segment. The freeing is performed in several mini-transactions, +so that there is no danger of bufferfixing too many buffer pages. */ +UNIV_INTERN +void +fseg_free( +/*======*/ + ulint space, /* in: space id */ + ulint zip_size,/* in: compressed page size in bytes + or 0 for uncompressed pages */ + ulint page_no,/* in: page number where the segment header is + placed */ + ulint offset);/* in: byte offset of the segment header on that + page */ +/************************************************************************** +Frees part of a segment. This function can be used to free a segment +by repeatedly calling this function in different mini-transactions. +Doing the freeing in a single mini-transaction might result in +too big a mini-transaction. */ +UNIV_INTERN +ibool +fseg_free_step( +/*===========*/ + /* out: TRUE if freeing completed */ + fseg_header_t* header, /* in, own: segment header; NOTE: if the header + resides on the first page of the frag list + of the segment, this pointer becomes obsolete + after the last freeing step */ + mtr_t* mtr); /* in: mtr */ +/************************************************************************** +Frees part of a segment. Differs from fseg_free_step because this function +leaves the header page unfreed. */ +UNIV_INTERN +ibool +fseg_free_step_not_header( +/*======================*/ + /* out: TRUE if freeing completed, except the + header page */ + fseg_header_t* header, /* in: segment header which must reside on + the first fragment page of the segment */ + mtr_t* mtr); /* in: mtr */ +/*************************************************************************** +Checks if a page address is an extent descriptor page address. */ +UNIV_INLINE +ibool +fsp_descr_page( +/*===========*/ + /* out: TRUE if a descriptor page */ + ulint zip_size,/* in: compressed page size in bytes; + 0 for uncompressed pages */ + ulint page_no);/* in: page number */ +/*************************************************************** +Parses a redo log record of a file page init. */ +UNIV_INTERN +byte* +fsp_parse_init_file_page( +/*=====================*/ + /* out: end of log record or NULL */ + byte* ptr, /* in: buffer */ + byte* end_ptr, /* in: buffer end */ + buf_block_t* block); /* in: block or NULL */ +/*********************************************************************** +Validates the file space system and its segments. */ +UNIV_INTERN +ibool +fsp_validate( +/*=========*/ + /* out: TRUE if ok */ + ulint space); /* in: space id */ +/*********************************************************************** +Prints info of a file space. */ +UNIV_INTERN +void +fsp_print( +/*======*/ + ulint space); /* in: space id */ +/*********************************************************************** +Validates a segment. */ +UNIV_INTERN +ibool +fseg_validate( +/*==========*/ + /* out: TRUE if ok */ + fseg_header_t* header, /* in: segment header */ + mtr_t* mtr2); /* in: mtr */ +#ifdef UNIV_BTR_PRINT +/*********************************************************************** +Writes info of a segment. */ +UNIV_INTERN +void +fseg_print( +/*=======*/ + fseg_header_t* header, /* in: segment header */ + mtr_t* mtr); /* in: mtr */ +#endif /* UNIV_BTR_PRINT */ + +/* Flags for fsp_reserve_free_extents */ +#define FSP_NORMAL 1000000 +#define FSP_UNDO 2000000 +#define FSP_CLEANING 3000000 + +/* Number of pages described in a single descriptor page: currently each page +description takes less than 1 byte; a descriptor page is repeated every +this many file pages */ +/* #define XDES_DESCRIBED_PER_PAGE UNIV_PAGE_SIZE */ +/* This has been replaced with either UNIV_PAGE_SIZE or page_zip->size. */ + +/* The space low address page map */ +/*--------------------------------------*/ + /* The following two pages are repeated + every XDES_DESCRIBED_PER_PAGE pages in + every tablespace. */ +#define FSP_XDES_OFFSET 0 /* extent descriptor */ +#define FSP_IBUF_BITMAP_OFFSET 1 /* insert buffer bitmap */ + /* The ibuf bitmap pages are the ones whose + page number is the number above plus a + multiple of XDES_DESCRIBED_PER_PAGE */ + +#define FSP_FIRST_INODE_PAGE_NO 2 /* in every tablespace */ + /* The following pages exist + in the system tablespace (space 0). */ +#define FSP_IBUF_HEADER_PAGE_NO 3 /* in tablespace 0 */ +#define FSP_IBUF_TREE_ROOT_PAGE_NO 4 /* in tablespace 0 */ + /* The ibuf tree root page number in + tablespace 0; its fseg inode is on the page + number FSP_FIRST_INODE_PAGE_NO */ +#define FSP_TRX_SYS_PAGE_NO 5 /* in tablespace 0 */ +#define FSP_FIRST_RSEG_PAGE_NO 6 /* in tablespace 0 */ +#define FSP_DICT_HDR_PAGE_NO 7 /* in tablespace 0 */ +/*--------------------------------------*/ + +#ifndef UNIV_NONINL +#include "fsp0fsp.ic" +#endif + +#endif === added file 'storage/xtradb/include/fsp0fsp.ic' --- a/storage/xtradb/include/fsp0fsp.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/fsp0fsp.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,44 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +File space management + +Created 12/18/1995 Heikki Tuuri +*******************************************************/ + +/*************************************************************************** +Checks if a page address is an extent descriptor page address. */ +UNIV_INLINE +ibool +fsp_descr_page( +/*===========*/ + /* out: TRUE if a descriptor page */ + ulint zip_size,/* in: compressed page size in bytes; + 0 for uncompressed pages */ + ulint page_no)/* in: page number */ +{ + ut_ad(ut_is_2pow(zip_size)); + + if (!zip_size) { + return(UNIV_UNLIKELY((page_no & (UNIV_PAGE_SIZE - 1)) + == FSP_XDES_OFFSET)); + } + + return(UNIV_UNLIKELY((page_no & (zip_size - 1)) == FSP_XDES_OFFSET)); +} === added file 'storage/xtradb/include/fut0fut.h' --- a/storage/xtradb/include/fut0fut.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/fut0fut.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,54 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/********************************************************************** +File-based utilities + +Created 12/13/1995 Heikki Tuuri +***********************************************************************/ + + +#ifndef fut0fut_h +#define fut0fut_h + +#include "univ.i" + +#include "fil0fil.h" +#include "mtr0mtr.h" + +/************************************************************************ +Gets a pointer to a file address and latches the page. */ +UNIV_INLINE +byte* +fut_get_ptr( +/*========*/ + /* out: pointer to a byte in a frame; the file + page in the frame is bufferfixed and latched */ + ulint space, /* in: space id */ + ulint zip_size,/* in: compressed page size in bytes + or 0 for uncompressed pages */ + fil_addr_t addr, /* in: file address */ + ulint rw_latch, /* in: RW_S_LATCH, RW_X_LATCH */ + mtr_t* mtr); /* in: mtr handle */ + +#ifndef UNIV_NONINL +#include "fut0fut.ic" +#endif + +#endif + === added file 'storage/xtradb/include/fut0fut.ic' --- a/storage/xtradb/include/fut0fut.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/fut0fut.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,55 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/********************************************************************** +File-based utilities + +Created 12/13/1995 Heikki Tuuri +***********************************************************************/ + +#include "sync0rw.h" +#include "buf0buf.h" + +/************************************************************************ +Gets a pointer to a file address and latches the page. */ +UNIV_INLINE +byte* +fut_get_ptr( +/*========*/ + /* out: pointer to a byte in a frame; the file + page in the frame is bufferfixed and latched */ + ulint space, /* in: space id */ + ulint zip_size,/* in: compressed page size in bytes + or 0 for uncompressed pages */ + fil_addr_t addr, /* in: file address */ + ulint rw_latch, /* in: RW_S_LATCH, RW_X_LATCH */ + mtr_t* mtr) /* in: mtr handle */ +{ + buf_block_t* block; + byte* ptr; + + ut_ad(addr.boffset < UNIV_PAGE_SIZE); + ut_ad((rw_latch == RW_S_LATCH) || (rw_latch == RW_X_LATCH)); + + block = buf_page_get(space, zip_size, addr.page, rw_latch, mtr); + ptr = buf_block_get_frame(block) + addr.boffset; + + buf_block_dbg_add_level(block, SYNC_NO_ORDER_CHECK); + + return(ptr); +} === added file 'storage/xtradb/include/fut0lst.h' --- a/storage/xtradb/include/fut0lst.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/fut0lst.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,214 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/********************************************************************** +File-based list utilities + +Created 11/28/1995 Heikki Tuuri +***********************************************************************/ + +#ifndef fut0lst_h +#define fut0lst_h + +#include "univ.i" + +#include "fil0fil.h" +#include "mtr0mtr.h" + + +/* The C 'types' of base node and list node: these should be used to +write self-documenting code. Of course, the sizeof macro cannot be +applied to these types! */ + +typedef byte flst_base_node_t; +typedef byte flst_node_t; + +/* The physical size of a list base node in bytes */ +#define FLST_BASE_NODE_SIZE (4 + 2 * FIL_ADDR_SIZE) + +/* The physical size of a list node in bytes */ +#define FLST_NODE_SIZE (2 * FIL_ADDR_SIZE) + + +/************************************************************************ +Initializes a list base node. */ +UNIV_INLINE +void +flst_init( +/*======*/ + flst_base_node_t* base, /* in: pointer to base node */ + mtr_t* mtr); /* in: mini-transaction handle */ +/************************************************************************ +Adds a node as the last node in a list. */ +UNIV_INTERN +void +flst_add_last( +/*==========*/ + flst_base_node_t* base, /* in: pointer to base node of list */ + flst_node_t* node, /* in: node to add */ + mtr_t* mtr); /* in: mini-transaction handle */ +/************************************************************************ +Adds a node as the first node in a list. */ +UNIV_INTERN +void +flst_add_first( +/*===========*/ + flst_base_node_t* base, /* in: pointer to base node of list */ + flst_node_t* node, /* in: node to add */ + mtr_t* mtr); /* in: mini-transaction handle */ +/************************************************************************ +Inserts a node after another in a list. */ +UNIV_INTERN +void +flst_insert_after( +/*==============*/ + flst_base_node_t* base, /* in: pointer to base node of list */ + flst_node_t* node1, /* in: node to insert after */ + flst_node_t* node2, /* in: node to add */ + mtr_t* mtr); /* in: mini-transaction handle */ +/************************************************************************ +Inserts a node before another in a list. */ +UNIV_INTERN +void +flst_insert_before( +/*===============*/ + flst_base_node_t* base, /* in: pointer to base node of list */ + flst_node_t* node2, /* in: node to insert */ + flst_node_t* node3, /* in: node to insert before */ + mtr_t* mtr); /* in: mini-transaction handle */ +/************************************************************************ +Removes a node. */ +UNIV_INTERN +void +flst_remove( +/*========*/ + flst_base_node_t* base, /* in: pointer to base node of list */ + flst_node_t* node2, /* in: node to remove */ + mtr_t* mtr); /* in: mini-transaction handle */ +/************************************************************************ +Cuts off the tail of the list, including the node given. The number of +nodes which will be removed must be provided by the caller, as this function +does not measure the length of the tail. */ +UNIV_INTERN +void +flst_cut_end( +/*=========*/ + flst_base_node_t* base, /* in: pointer to base node of list */ + flst_node_t* node2, /* in: first node to remove */ + ulint n_nodes,/* in: number of nodes to remove, + must be >= 1 */ + mtr_t* mtr); /* in: mini-transaction handle */ +/************************************************************************ +Cuts off the tail of the list, not including the given node. The number of +nodes which will be removed must be provided by the caller, as this function +does not measure the length of the tail. */ +UNIV_INTERN +void +flst_truncate_end( +/*==============*/ + flst_base_node_t* base, /* in: pointer to base node of list */ + flst_node_t* node2, /* in: first node not to remove */ + ulint n_nodes,/* in: number of nodes to remove */ + mtr_t* mtr); /* in: mini-transaction handle */ +/************************************************************************ +Gets list length. */ +UNIV_INLINE +ulint +flst_get_len( +/*=========*/ + /* out: length */ + const flst_base_node_t* base, /* in: pointer to base node */ + mtr_t* mtr); /* in: mini-transaction handle */ +/************************************************************************ +Gets list first node address. */ +UNIV_INLINE +fil_addr_t +flst_get_first( +/*===========*/ + /* out: file address */ + const flst_base_node_t* base, /* in: pointer to base node */ + mtr_t* mtr); /* in: mini-transaction handle */ +/************************************************************************ +Gets list last node address. */ +UNIV_INLINE +fil_addr_t +flst_get_last( +/*==========*/ + /* out: file address */ + const flst_base_node_t* base, /* in: pointer to base node */ + mtr_t* mtr); /* in: mini-transaction handle */ +/************************************************************************ +Gets list next node address. */ +UNIV_INLINE +fil_addr_t +flst_get_next_addr( +/*===============*/ + /* out: file address */ + const flst_node_t* node, /* in: pointer to node */ + mtr_t* mtr); /* in: mini-transaction handle */ +/************************************************************************ +Gets list prev node address. */ +UNIV_INLINE +fil_addr_t +flst_get_prev_addr( +/*===============*/ + /* out: file address */ + const flst_node_t* node, /* in: pointer to node */ + mtr_t* mtr); /* in: mini-transaction handle */ +/************************************************************************ +Writes a file address. */ +UNIV_INLINE +void +flst_write_addr( +/*============*/ + fil_faddr_t* faddr, /* in: pointer to file faddress */ + fil_addr_t addr, /* in: file address */ + mtr_t* mtr); /* in: mini-transaction handle */ +/************************************************************************ +Reads a file address. */ +UNIV_INLINE +fil_addr_t +flst_read_addr( +/*===========*/ + /* out: file address */ + const fil_faddr_t* faddr, /* in: pointer to file faddress */ + mtr_t* mtr); /* in: mini-transaction handle */ +/************************************************************************ +Validates a file-based list. */ +UNIV_INTERN +ibool +flst_validate( +/*==========*/ + /* out: TRUE if ok */ + const flst_base_node_t* base, /* in: pointer to base node of list */ + mtr_t* mtr1); /* in: mtr */ +/************************************************************************ +Prints info of a file-based list. */ +UNIV_INTERN +void +flst_print( +/*=======*/ + const flst_base_node_t* base, /* in: pointer to base node of list */ + mtr_t* mtr); /* in: mtr */ + + +#ifndef UNIV_NONINL +#include "fut0lst.ic" +#endif + +#endif === added file 'storage/xtradb/include/fut0lst.ic' --- a/storage/xtradb/include/fut0lst.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/fut0lst.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,166 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/********************************************************************** +File-based list utilities + +Created 11/28/1995 Heikki Tuuri +***********************************************************************/ + +#include "fut0fut.h" +#include "mtr0log.h" +#include "buf0buf.h" + +/* We define the field offsets of a node for the list */ +#define FLST_PREV 0 /* 6-byte address of the previous list element; + the page part of address is FIL_NULL, if no + previous element */ +#define FLST_NEXT FIL_ADDR_SIZE /* 6-byte address of the next + list element; the page part of address + is FIL_NULL, if no next element */ + +/* We define the field offsets of a base node for the list */ +#define FLST_LEN 0 /* 32-bit list length field */ +#define FLST_FIRST 4 /* 6-byte address of the first element + of the list; undefined if empty list */ +#define FLST_LAST (4 + FIL_ADDR_SIZE) /* 6-byte address of the + last element of the list; undefined + if empty list */ + +/************************************************************************ +Writes a file address. */ +UNIV_INLINE +void +flst_write_addr( +/*============*/ + fil_faddr_t* faddr, /* in: pointer to file faddress */ + fil_addr_t addr, /* in: file address */ + mtr_t* mtr) /* in: mini-transaction handle */ +{ + ut_ad(faddr && mtr); + ut_ad(mtr_memo_contains_page(mtr, faddr, MTR_MEMO_PAGE_X_FIX)); + ut_a(addr.page == FIL_NULL || addr.boffset >= FIL_PAGE_DATA); + ut_a(ut_align_offset(faddr, UNIV_PAGE_SIZE) >= FIL_PAGE_DATA); + + mlog_write_ulint(faddr + FIL_ADDR_PAGE, addr.page, MLOG_4BYTES, mtr); + mlog_write_ulint(faddr + FIL_ADDR_BYTE, addr.boffset, + MLOG_2BYTES, mtr); +} + +/************************************************************************ +Reads a file address. */ +UNIV_INLINE +fil_addr_t +flst_read_addr( +/*===========*/ + /* out: file address */ + const fil_faddr_t* faddr, /* in: pointer to file faddress */ + mtr_t* mtr) /* in: mini-transaction handle */ +{ + fil_addr_t addr; + + ut_ad(faddr && mtr); + + addr.page = mtr_read_ulint(faddr + FIL_ADDR_PAGE, MLOG_4BYTES, mtr); + addr.boffset = mtr_read_ulint(faddr + FIL_ADDR_BYTE, MLOG_2BYTES, + mtr); + ut_a(addr.page == FIL_NULL || addr.boffset >= FIL_PAGE_DATA); + ut_a(ut_align_offset(faddr, UNIV_PAGE_SIZE) >= FIL_PAGE_DATA); + return(addr); +} + +/************************************************************************ +Initializes a list base node. */ +UNIV_INLINE +void +flst_init( +/*======*/ + flst_base_node_t* base, /* in: pointer to base node */ + mtr_t* mtr) /* in: mini-transaction handle */ +{ + ut_ad(mtr_memo_contains_page(mtr, base, MTR_MEMO_PAGE_X_FIX)); + + mlog_write_ulint(base + FLST_LEN, 0, MLOG_4BYTES, mtr); + flst_write_addr(base + FLST_FIRST, fil_addr_null, mtr); + flst_write_addr(base + FLST_LAST, fil_addr_null, mtr); +} + +/************************************************************************ +Gets list length. */ +UNIV_INLINE +ulint +flst_get_len( +/*=========*/ + /* out: length */ + const flst_base_node_t* base, /* in: pointer to base node */ + mtr_t* mtr) /* in: mini-transaction handle */ +{ + return(mtr_read_ulint(base + FLST_LEN, MLOG_4BYTES, mtr)); +} + +/************************************************************************ +Gets list first node address. */ +UNIV_INLINE +fil_addr_t +flst_get_first( +/*===========*/ + /* out: file address */ + const flst_base_node_t* base, /* in: pointer to base node */ + mtr_t* mtr) /* in: mini-transaction handle */ +{ + return(flst_read_addr(base + FLST_FIRST, mtr)); +} + +/************************************************************************ +Gets list last node address. */ +UNIV_INLINE +fil_addr_t +flst_get_last( +/*==========*/ + /* out: file address */ + const flst_base_node_t* base, /* in: pointer to base node */ + mtr_t* mtr) /* in: mini-transaction handle */ +{ + return(flst_read_addr(base + FLST_LAST, mtr)); +} + +/************************************************************************ +Gets list next node address. */ +UNIV_INLINE +fil_addr_t +flst_get_next_addr( +/*===============*/ + /* out: file address */ + const flst_node_t* node, /* in: pointer to node */ + mtr_t* mtr) /* in: mini-transaction handle */ +{ + return(flst_read_addr(node + FLST_NEXT, mtr)); +} + +/************************************************************************ +Gets list prev node address. */ +UNIV_INLINE +fil_addr_t +flst_get_prev_addr( +/*===============*/ + /* out: file address */ + const flst_node_t* node, /* in: pointer to node */ + mtr_t* mtr) /* in: mini-transaction handle */ +{ + return(flst_read_addr(node + FLST_PREV, mtr)); +} === added file 'storage/xtradb/include/ha0ha.h' --- a/storage/xtradb/include/ha0ha.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/ha0ha.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,188 @@ +/***************************************************************************** + +Copyright (c) 1994, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +The hash table with external chains + +Created 8/18/1994 Heikki Tuuri +*******************************************************/ + +#ifndef ha0ha_h +#define ha0ha_h + +#include "univ.i" + +#include "hash0hash.h" +#include "page0types.h" +#include "buf0types.h" + +/***************************************************************** +Looks for an element in a hash table. */ +UNIV_INLINE +void* +ha_search_and_get_data( +/*===================*/ + /* out: pointer to the data of the first hash + table node in chain having the fold number, + NULL if not found */ + hash_table_t* table, /* in: hash table */ + ulint fold); /* in: folded value of the searched data */ +/************************************************************* +Looks for an element when we know the pointer to the data and updates +the pointer to data if found. */ +UNIV_INTERN +void +ha_search_and_update_if_found_func( +/*===============================*/ + hash_table_t* table, /* in: hash table */ + ulint fold, /* in: folded value of the searched data */ + void* data, /* in: pointer to the data */ +#if defined UNIV_AHI_DEBUG || defined UNIV_DEBUG + buf_block_t* new_block,/* in: block containing new_data */ +#endif /* UNIV_AHI_DEBUG || UNIV_DEBUG */ + void* new_data);/* in: new pointer to the data */ + +#if defined UNIV_AHI_DEBUG || defined UNIV_DEBUG +# define ha_search_and_update_if_found(table,fold,data,new_block,new_data) \ + ha_search_and_update_if_found_func(table,fold,data,new_block,new_data) +#else /* UNIV_AHI_DEBUG || UNIV_DEBUG */ +# define ha_search_and_update_if_found(table,fold,data,new_block,new_data) \ + ha_search_and_update_if_found_func(table,fold,data,new_data) +#endif /* UNIV_AHI_DEBUG || UNIV_DEBUG */ +/***************************************************************** +Creates a hash table with >= n array cells. The actual number of cells is +chosen to be a prime number slightly bigger than n. */ +UNIV_INTERN +hash_table_t* +ha_create_func( +/*===========*/ + /* out, own: created table */ + ulint n, /* in: number of array cells */ +#ifdef UNIV_SYNC_DEBUG + ulint mutex_level, /* in: level of the mutexes in the latching + order: this is used in the debug version */ +#endif /* UNIV_SYNC_DEBUG */ + ulint n_mutexes); /* in: number of mutexes to protect the + hash table: must be a power of 2 */ +#ifdef UNIV_SYNC_DEBUG +# define ha_create(n_c,n_m,level) ha_create_func(n_c,level,n_m) +#else /* UNIV_SYNC_DEBUG */ +# define ha_create(n_c,n_m,level) ha_create_func(n_c,n_m) +#endif /* UNIV_SYNC_DEBUG */ + +/***************************************************************** +Empties a hash table and frees the memory heaps. */ +UNIV_INTERN +void +ha_clear( +/*=====*/ + hash_table_t* table); /* in, own: hash table */ + +/***************************************************************** +Inserts an entry into a hash table. If an entry with the same fold number +is found, its node is updated to point to the new data, and no new node +is inserted. */ +UNIV_INTERN +ibool +ha_insert_for_fold_func( +/*====================*/ + /* out: TRUE if succeed, FALSE if no more + memory could be allocated */ + hash_table_t* table, /* in: hash table */ + ulint fold, /* in: folded value of data; if a node with + the same fold value already exists, it is + updated to point to the same data, and no new + node is created! */ +#if defined UNIV_AHI_DEBUG || defined UNIV_DEBUG + buf_block_t* block, /* in: buffer block containing the data */ +#endif /* UNIV_AHI_DEBUG || UNIV_DEBUG */ + void* data); /* in: data, must not be NULL */ + +#if defined UNIV_AHI_DEBUG || defined UNIV_DEBUG +# define ha_insert_for_fold(t,f,b,d) ha_insert_for_fold_func(t,f,b,d) +#else /* UNIV_AHI_DEBUG || UNIV_DEBUG */ +# define ha_insert_for_fold(t,f,b,d) ha_insert_for_fold_func(t,f,d) +#endif /* UNIV_AHI_DEBUG || UNIV_DEBUG */ + +/***************************************************************** +Deletes an entry from a hash table. */ +UNIV_INTERN +void +ha_delete( +/*======*/ + hash_table_t* table, /* in: hash table */ + ulint fold, /* in: folded value of data */ + void* data); /* in: data, must not be NULL and must exist + in the hash table */ +/************************************************************* +Looks for an element when we know the pointer to the data and deletes +it from the hash table if found. */ +UNIV_INLINE +ibool +ha_search_and_delete_if_found( +/*==========================*/ + /* out: TRUE if found */ + hash_table_t* table, /* in: hash table */ + ulint fold, /* in: folded value of the searched data */ + void* data); /* in: pointer to the data */ +/********************************************************************* +Removes from the chain determined by fold all nodes whose data pointer +points to the page given. */ +UNIV_INTERN +void +ha_remove_all_nodes_to_page( +/*========================*/ + hash_table_t* table, /* in: hash table */ + ulint fold, /* in: fold value */ + const page_t* page); /* in: buffer page */ +/***************************************************************** +Validates a given range of the cells in hash table. */ +UNIV_INTERN +ibool +ha_validate( +/*========*/ + /* out: TRUE if ok */ + hash_table_t* table, /* in: hash table */ + ulint start_index, /* in: start index */ + ulint end_index); /* in: end index */ +/***************************************************************** +Prints info of a hash table. */ +UNIV_INTERN +void +ha_print_info( +/*==========*/ + FILE* file, /* in: file where to print */ + hash_table_t* table); /* in: hash table */ + +/* The hash table external chain node */ + +typedef struct ha_node_struct ha_node_t; +struct ha_node_struct { + ha_node_t* next; /* next chain node or NULL if none */ +#if defined UNIV_AHI_DEBUG || defined UNIV_DEBUG + buf_block_t* block; /* buffer block containing the data, or NULL */ +#endif /* UNIV_AHI_DEBUG || UNIV_DEBUG */ + void* data; /* pointer to the data */ + ulint fold; /* fold value for the data */ +}; + +#ifndef UNIV_NONINL +#include "ha0ha.ic" +#endif + +#endif === added file 'storage/xtradb/include/ha0ha.ic' --- a/storage/xtradb/include/ha0ha.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/ha0ha.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,214 @@ +/***************************************************************************** + +Copyright (c) 1994, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/************************************************************************ +The hash table with external chains + +Created 8/18/1994 Heikki Tuuri +*************************************************************************/ + +#include "ut0rnd.h" +#include "mem0mem.h" + +/*************************************************************** +Deletes a hash node. */ +UNIV_INTERN +void +ha_delete_hash_node( +/*================*/ + hash_table_t* table, /* in: hash table */ + ha_node_t* del_node); /* in: node to be deleted */ + +/********************************************************************** +Gets a hash node data. */ +UNIV_INLINE +void* +ha_node_get_data( +/*=============*/ + /* out: pointer to the data */ + ha_node_t* node) /* in: hash chain node */ +{ + return(node->data); +} + +/********************************************************************** +Sets hash node data. */ +UNIV_INLINE +void +ha_node_set_data_func( +/*==================*/ + ha_node_t* node, /* in: hash chain node */ +#if defined UNIV_AHI_DEBUG || defined UNIV_DEBUG + buf_block_t* block, /* in: buffer block containing the data */ +#endif /* UNIV_AHI_DEBUG || UNIV_DEBUG */ + void* data) /* in: pointer to the data */ +{ +#if defined UNIV_AHI_DEBUG || defined UNIV_DEBUG + node->block = block; +#endif /* UNIV_AHI_DEBUG || UNIV_DEBUG */ + node->data = data; +} + +#if defined UNIV_AHI_DEBUG || defined UNIV_DEBUG +# define ha_node_set_data(n,b,d) ha_node_set_data_func(n,b,d) +#else /* UNIV_AHI_DEBUG || UNIV_DEBUG */ +# define ha_node_set_data(n,b,d) ha_node_set_data_func(n,d) +#endif /* UNIV_AHI_DEBUG || UNIV_DEBUG */ + +/********************************************************************** +Gets the next node in a hash chain. */ +UNIV_INLINE +ha_node_t* +ha_chain_get_next( +/*==============*/ + /* out: next node, NULL if none */ + ha_node_t* node) /* in: hash chain node */ +{ + return(node->next); +} + +/********************************************************************** +Gets the first node in a hash chain. */ +UNIV_INLINE +ha_node_t* +ha_chain_get_first( +/*===============*/ + /* out: first node, NULL if none */ + hash_table_t* table, /* in: hash table */ + ulint fold) /* in: fold value determining the chain */ +{ + return((ha_node_t*) + hash_get_nth_cell(table, hash_calc_hash(fold, table))->node); +} + +/***************************************************************** +Looks for an element in a hash table. */ +UNIV_INLINE +ha_node_t* +ha_search( +/*======*/ + /* out: pointer to the first hash table node + in chain having the fold number, NULL if not + found */ + hash_table_t* table, /* in: hash table */ + ulint fold) /* in: folded value of the searched data */ +{ + ha_node_t* node; + + ut_ad(!table->mutexes || mutex_own(hash_get_mutex(table, fold))); + + node = ha_chain_get_first(table, fold); + + while (node) { + if (node->fold == fold) { + + return(node); + } + + node = ha_chain_get_next(node); + } + + return(NULL); +} + +/***************************************************************** +Looks for an element in a hash table. */ +UNIV_INLINE +void* +ha_search_and_get_data( +/*===================*/ + /* out: pointer to the data of the first hash + table node in chain having the fold number, + NULL if not found */ + hash_table_t* table, /* in: hash table */ + ulint fold) /* in: folded value of the searched data */ +{ + ha_node_t* node; + + ut_ad(!table->mutexes || mutex_own(hash_get_mutex(table, fold))); + + node = ha_chain_get_first(table, fold); + + while (node) { + if (node->fold == fold) { + + return(node->data); + } + + node = ha_chain_get_next(node); + } + + return(NULL); +} + +/************************************************************* +Looks for an element when we know the pointer to the data. */ +UNIV_INLINE +ha_node_t* +ha_search_with_data( +/*================*/ + /* out: pointer to the hash table node, NULL + if not found in the table */ + hash_table_t* table, /* in: hash table */ + ulint fold, /* in: folded value of the searched data */ + void* data) /* in: pointer to the data */ +{ + ha_node_t* node; + + ut_ad(!table->mutexes || mutex_own(hash_get_mutex(table, fold))); + + node = ha_chain_get_first(table, fold); + + while (node) { + if (node->data == data) { + + return(node); + } + + node = ha_chain_get_next(node); + } + + return(NULL); +} + +/************************************************************* +Looks for an element when we know the pointer to the data, and deletes +it from the hash table, if found. */ +UNIV_INLINE +ibool +ha_search_and_delete_if_found( +/*==========================*/ + /* out: TRUE if found */ + hash_table_t* table, /* in: hash table */ + ulint fold, /* in: folded value of the searched data */ + void* data) /* in: pointer to the data */ +{ + ha_node_t* node; + + ut_ad(!table->mutexes || mutex_own(hash_get_mutex(table, fold))); + + node = ha_search_with_data(table, fold, data); + + if (node) { + ha_delete_hash_node(table, node); + + return(TRUE); + } + + return(FALSE); +} === added file 'storage/xtradb/include/ha0storage.h' --- a/storage/xtradb/include/ha0storage.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/ha0storage.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,129 @@ +/***************************************************************************** + +Copyright (c) 2007, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Hash storage. +Provides a data structure that stores chunks of data in +its own storage, avoiding duplicates. + +Created September 22, 2007 Vasil Dimov +*******************************************************/ + +#ifndef ha0storage_h +#define ha0storage_h + +#include "univ.i" + +/* This value is used by default by ha_storage_create(). More memory +is allocated later when/if it is needed. */ +#define HA_STORAGE_DEFAULT_HEAP_BYTES 1024 + +/* This value is used by default by ha_storage_create(). It is a +constant per ha_storage's lifetime. */ +#define HA_STORAGE_DEFAULT_HASH_CELLS 4096 + +typedef struct ha_storage_struct ha_storage_t; + +/*********************************************************************** +Creates a hash storage. If any of the parameters is 0, then a default +value is used. */ +UNIV_INLINE +ha_storage_t* +ha_storage_create( +/*==============*/ + /* out, own: hash storage */ + ulint initial_heap_bytes, /* in: initial heap's size */ + ulint initial_hash_cells); /* in: initial number of cells + in the hash table */ + +/*********************************************************************** +Copies data into the storage and returns a pointer to the copy. If the +same data chunk is already present, then pointer to it is returned. +Data chunks are considered to be equal if len1 == len2 and +memcmp(data1, data2, len1) == 0. If "data" is not present (and thus +data_len bytes need to be allocated) and the size of storage is going to +become more than "memlim" then "data" is not added and NULL is returned. +To disable this behavior "memlim" can be set to 0, which stands for +"no limit". */ + +const void* +ha_storage_put_memlim( +/*==================*/ + /* out: pointer to the copy */ + ha_storage_t* storage, /* in/out: hash storage */ + const void* data, /* in: data to store */ + ulint data_len, /* in: data length */ + ulint memlim); /* in: memory limit to obey */ + +/*********************************************************************** +Same as ha_storage_put_memlim() but without memory limit. */ + +#define ha_storage_put(storage, data, data_len) \ + ha_storage_put_memlim((storage), (data), (data_len), 0) + +/*********************************************************************** +Copies string into the storage and returns a pointer to the copy. If the +same string is already present, then pointer to it is returned. +Strings are considered to be equal if strcmp(str1, str2) == 0. */ + +#define ha_storage_put_str(storage, str) \ + ((const char*) ha_storage_put((storage), (str), strlen(str) + 1)) + +/*********************************************************************** +Copies string into the storage and returns a pointer to the copy obeying +a memory limit. */ + +#define ha_storage_put_str_memlim(storage, str, memlim) \ + ((const char*) ha_storage_put_memlim((storage), (str), \ + strlen(str) + 1, (memlim))) + +/*********************************************************************** +Empties a hash storage, freeing memory occupied by data chunks. +This invalidates any pointers previously returned by ha_storage_put(). +The hash storage is not invalidated itself and can be used again. */ +UNIV_INLINE +void +ha_storage_empty( +/*=============*/ + ha_storage_t** storage); /* in/out: hash storage */ + +/*********************************************************************** +Frees a hash storage and everything it contains, it cannot be used after +this call. +This invalidates any pointers previously returned by ha_storage_put(). +*/ +UNIV_INLINE +void +ha_storage_free( +/*============*/ + ha_storage_t* storage); /* in/out: hash storage */ + +/*********************************************************************** +Gets the size of the memory used by a storage. */ +UNIV_INLINE +ulint +ha_storage_get_size( +/*================*/ + /* out: bytes used */ + const ha_storage_t* storage); /* in: hash storage */ + +#ifndef UNIV_NONINL +#include "ha0storage.ic" +#endif + +#endif /* ha0storage_h */ === added file 'storage/xtradb/include/ha0storage.ic' --- a/storage/xtradb/include/ha0storage.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/ha0storage.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,146 @@ +/***************************************************************************** + +Copyright (c) 2007, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Hash storage. +Provides a data structure that stores chunks of data in +its own storage, avoiding duplicates. + +Created September 24, 2007 Vasil Dimov +*******************************************************/ + +#include "univ.i" +#include "ha0storage.h" +#include "hash0hash.h" +#include "mem0mem.h" + +struct ha_storage_struct { + mem_heap_t* heap; /* storage from which memory is + allocated */ + hash_table_t* hash; /* hash table used to avoid + duplicates */ +}; + +/* Objects of this type are put in the hash */ +typedef struct ha_storage_node_struct ha_storage_node_t; +struct ha_storage_node_struct { + ulint data_len;/* length of the data */ + const void* data; /* pointer to data */ + ha_storage_node_t* next; /* next node in hash chain */ +}; + +/*********************************************************************** +Creates a hash storage. If any of the parameters is 0, then a default +value is used. */ +UNIV_INLINE +ha_storage_t* +ha_storage_create( +/*==============*/ + /* out, own: hash storage */ + ulint initial_heap_bytes, /* in: initial heap's size */ + ulint initial_hash_cells) /* in: initial number of cells + in the hash table */ +{ + ha_storage_t* storage; + mem_heap_t* heap; + + if (initial_heap_bytes == 0) { + + initial_heap_bytes = HA_STORAGE_DEFAULT_HEAP_BYTES; + } + + if (initial_hash_cells == 0) { + + initial_hash_cells = HA_STORAGE_DEFAULT_HASH_CELLS; + } + + /* we put "storage" within "storage->heap" */ + + heap = mem_heap_create(sizeof(ha_storage_t) + + initial_heap_bytes); + + storage = (ha_storage_t*) mem_heap_alloc(heap, + sizeof(ha_storage_t)); + + storage->heap = heap; + storage->hash = hash_create(initial_hash_cells); + + return(storage); +} + +/*********************************************************************** +Empties a hash storage, freeing memory occupied by data chunks. +This invalidates any pointers previously returned by ha_storage_put(). +The hash storage is not invalidated itself and can be used again. */ +UNIV_INLINE +void +ha_storage_empty( +/*=============*/ + ha_storage_t** storage) /* in/out: hash storage */ +{ + ha_storage_t temp_storage; + + temp_storage.heap = (*storage)->heap; + temp_storage.hash = (*storage)->hash; + + hash_table_clear(temp_storage.hash); + mem_heap_empty(temp_storage.heap); + + *storage = (ha_storage_t*) mem_heap_alloc(temp_storage.heap, + sizeof(ha_storage_t)); + + (*storage)->heap = temp_storage.heap; + (*storage)->hash = temp_storage.hash; +} + +/*********************************************************************** +Frees a hash storage and everything it contains, it cannot be used after +this call. +This invalidates any pointers previously returned by ha_storage_put(). +*/ +UNIV_INLINE +void +ha_storage_free( +/*============*/ + ha_storage_t* storage) /* in/out: hash storage */ +{ + /* order is important because the pointer storage->hash is + within the heap */ + hash_table_free(storage->hash); + mem_heap_free(storage->heap); +} + +/*********************************************************************** +Gets the size of the memory used by a storage. */ +UNIV_INLINE +ulint +ha_storage_get_size( +/*================*/ + /* out: bytes used */ + const ha_storage_t* storage) /* in: hash storage */ +{ + ulint ret; + + ret = mem_heap_get_size(storage->heap); + + /* this assumes hash->heap and hash->heaps are NULL */ + ret += sizeof(hash_table_t); + ret += sizeof(hash_cell_t) * hash_get_n_cells(storage->hash); + + return(ret); +} === added file 'storage/xtradb/include/ha_prototypes.h' --- a/storage/xtradb/include/ha_prototypes.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/ha_prototypes.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,249 @@ +/***************************************************************************** + +Copyright (c) 2006, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +#ifndef HA_INNODB_PROTOTYPES_H +#define HA_INNODB_PROTOTYPES_H + +#ifndef UNIV_HOTBACKUP + +#include "univ.i" /* ulint, uint */ +#include "m_ctype.h" /* CHARSET_INFO */ + +/* Prototypes for global functions in ha_innodb.cc that are called by +InnoDB's C-code. */ + +/************************************************************************* +Wrapper around MySQL's copy_and_convert function, see it for +documentation. */ +UNIV_INTERN +ulint +innobase_convert_string( +/*====================*/ + void* to, + ulint to_length, + CHARSET_INFO* to_cs, + const void* from, + ulint from_length, + CHARSET_INFO* from_cs, + uint* errors); + +/*********************************************************************** +Formats the raw data in "data" (in InnoDB on-disk format) that is of +type DATA_(CHAR|VARCHAR|MYSQL|VARMYSQL) using "charset_coll" and writes +the result to "buf". The result is converted to "system_charset_info". +Not more than "buf_size" bytes are written to "buf". +The result is always '\0'-terminated (provided buf_size > 0) and the +number of bytes that were written to "buf" is returned (including the +terminating '\0'). */ +UNIV_INTERN +ulint +innobase_raw_format( +/*================*/ + /* out: number of bytes + that were written */ + const char* data, /* in: raw data */ + ulint data_len, /* in: raw data length + in bytes */ + ulint charset_coll, /* in: charset collation */ + char* buf, /* out: output buffer */ + ulint buf_size); /* in: output buffer size + in bytes */ + +/********************************************************************* +Convert a table or index name to the MySQL system_charset_info (UTF-8) +and quote it if needed. */ +UNIV_INTERN +char* +innobase_convert_name( +/*==================*/ + /* out: pointer to the end of buf */ + char* buf, /* out: buffer for converted identifier */ + ulint buflen, /* in: length of buf, in bytes */ + const char* id, /* in: identifier to convert */ + ulint idlen, /* in: length of id, in bytes */ + void* thd, /* in: MySQL connection thread, or NULL */ + ibool table_id);/* in: TRUE=id is a table or database name; + FALSE=id is an index name */ + +/********************************************************************** +Returns true if the thread is the replication thread on the slave +server. Used in srv_conc_enter_innodb() to determine if the thread +should be allowed to enter InnoDB - the replication thread is treated +differently than other threads. Also used in +srv_conc_force_exit_innodb(). */ +UNIV_INTERN +ibool +thd_is_replication_slave_thread( +/*============================*/ + /* out: true if thd is the replication thread */ + void* thd); /* in: thread handle (THD*) */ + +/********************************************************************** +Returns true if the transaction this thread is processing has edited +non-transactional tables. Used by the deadlock detector when deciding +which transaction to rollback in case of a deadlock - we try to avoid +rolling back transactions that have edited non-transactional tables. */ +UNIV_INTERN +ibool +thd_has_edited_nontrans_tables( +/*===========================*/ + /* out: true if non-transactional tables have + been edited */ + void* thd); /* in: thread handle (THD*) */ + +/***************************************************************** +Prints info of a THD object (== user session thread) to the given file. */ +UNIV_INTERN +void +innobase_mysql_print_thd( +/*=====================*/ + FILE* f, /* in: output stream */ + void* thd, /* in: pointer to a MySQL THD object */ + uint max_query_len); /* in: max query length to print, or 0 to + use the default max length */ + +/****************************************************************** +Converts a MySQL type to an InnoDB type. Note that this function returns +the 'mtype' of InnoDB. InnoDB differentiates between MySQL's old <= 4.1 +VARCHAR and the new true VARCHAR in >= 5.0.3 by the 'prtype'. */ +UNIV_INTERN +ulint +get_innobase_type_from_mysql_type( +/*==============================*/ + /* out: DATA_BINARY, + DATA_VARCHAR, ... */ + ulint* unsigned_flag, /* out: DATA_UNSIGNED if an + 'unsigned type'; + at least ENUM and SET, + and unsigned integer + types are 'unsigned types' */ + const void* field) /* in: MySQL Field */ + __attribute__((nonnull)); + +/***************************************************************** +If you want to print a thd that is not associated with the current thread, +you must call this function before reserving the InnoDB kernel_mutex, to +protect MySQL from setting thd->query NULL. If you print a thd of the current +thread, we know that MySQL cannot modify thd->query, and it is not necessary +to call this. Call innobase_mysql_end_print_arbitrary_thd() after you release +the kernel_mutex. */ +UNIV_INTERN +void +innobase_mysql_prepare_print_arbitrary_thd(void); +/*============================================*/ + +/***************************************************************** +Releases the mutex reserved by innobase_mysql_prepare_print_arbitrary_thd(). +In the InnoDB latching order, the mutex sits right above the +kernel_mutex. In debug builds, we assert that the kernel_mutex is +released before this function is invoked. */ +UNIV_INTERN +void +innobase_mysql_end_print_arbitrary_thd(void); +/*========================================*/ + +/********************************************************************** +Get the variable length bounds of the given character set. */ +UNIV_INTERN +void +innobase_get_cset_width( +/*====================*/ + ulint cset, /* in: MySQL charset-collation code */ + ulint* mbminlen, /* out: minimum length of a char (in bytes) */ + ulint* mbmaxlen); /* out: maximum length of a char (in bytes) */ + +/********************************************************************** +Compares NUL-terminated UTF-8 strings case insensitively. */ +UNIV_INTERN +int +innobase_strcasecmp( +/*================*/ + /* out: 0 if a=b, <0 if a<b, >1 if a>b */ + const char* a, /* in: first string to compare */ + const char* b); /* in: second string to compare */ + +/********************************************************************** +Returns true if the thread is executing a SELECT statement. */ + +ibool +thd_is_select( +/*==========*/ + /* out: true if thd is executing SELECT */ + const void* thd); /* in: thread handle (THD*) */ + +/********************************************************************** +Converts an identifier to a table name. */ +UNIV_INTERN +void +innobase_convert_from_table_id( +/*===========================*/ + struct charset_info_st* cs, /* in: the 'from' character set */ + char* to, /* out: converted identifier */ + const char* from, /* in: identifier to convert */ + ulint len); /* in: length of 'to', in bytes; should + be at least 5 * strlen(to) + 1 */ +/********************************************************************** +Converts an identifier to UTF-8. */ +UNIV_INTERN +void +innobase_convert_from_id( +/*=====================*/ + struct charset_info_st* cs, /* in: the 'from' character set */ + char* to, /* out: converted identifier */ + const char* from, /* in: identifier to convert */ + ulint len); /* in: length of 'to', in bytes; should + be at least 3 * strlen(to) + 1 */ +/********************************************************************** +Makes all characters in a NUL-terminated UTF-8 string lower case. */ +UNIV_INTERN +void +innobase_casedn_str( +/*================*/ + char* a); /* in/out: string to put in lower case */ + +/************************************************************************** +Determines the connection character set. */ +struct charset_info_st* +innobase_get_charset( +/*=================*/ + /* out: connection character set */ + void* mysql_thd); /* in: MySQL thread handle */ + +/********************************************************************** +Returns true if the thread supports XA, +global value of innodb_supports_xa if thd is NULL. */ + +ibool +thd_supports_xa( +/*============*/ + /* out: true if thd supports XA */ + void* thd); /* in: thread handle (THD*), or NULL to query + the global innodb_supports_xa */ + +/********************************************************************** +Returns the lock wait timeout for the current connection. */ + +ulong +thd_lock_wait_timeout( +/*==================*/ + /* out: the lock wait timeout, in seconds */ + void* thd); /* in: thread handle (THD*), or NULL to query + the global innodb_lock_wait_timeout */ + +#endif +#endif === added file 'storage/xtradb/include/handler0alter.h' --- a/storage/xtradb/include/handler0alter.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/handler0alter.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,41 @@ +/***************************************************************************** + +Copyright (c) 2005, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Smart ALTER TABLE +*******************************************************/ + +/***************************************************************** +Copies an InnoDB record to table->record[0]. */ +UNIV_INTERN +void +innobase_rec_to_mysql( +/*==================*/ + TABLE* table, /* in/out: MySQL table */ + const rec_t* rec, /* in: record */ + const dict_index_t* index, /* in: index */ + const ulint* offsets); /* in: rec_get_offsets( + rec, index, ...) */ + +/***************************************************************** +Resets table->record[0]. */ +UNIV_INTERN +void +innobase_rec_reset( +/*===============*/ + TABLE* table); /* in/out: MySQL table */ === added file 'storage/xtradb/include/hash0hash.h' --- a/storage/xtradb/include/hash0hash.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/hash0hash.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,429 @@ +/***************************************************************************** + +Copyright (c) 1997, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +The simple hash table utility + +Created 5/20/1997 Heikki Tuuri +*******************************************************/ + +#ifndef hash0hash_h +#define hash0hash_h + +#include "univ.i" +#include "mem0mem.h" +#include "sync0sync.h" + +typedef struct hash_table_struct hash_table_t; +typedef struct hash_cell_struct hash_cell_t; + +typedef void* hash_node_t; + +/* Fix Bug #13859: symbol collision between imap/mysql */ +#define hash_create hash0_create + +/***************************************************************** +Creates a hash table with >= n array cells. The actual number +of cells is chosen to be a prime number slightly bigger than n. */ +UNIV_INTERN +hash_table_t* +hash_create( +/*========*/ + /* out, own: created table */ + ulint n); /* in: number of array cells */ +/***************************************************************** +Creates a mutex array to protect a hash table. */ +UNIV_INTERN +void +hash_create_mutexes_func( +/*=====================*/ + hash_table_t* table, /* in: hash table */ +#ifdef UNIV_SYNC_DEBUG + ulint sync_level, /* in: latching order level of the + mutexes: used in the debug version */ +#endif /* UNIV_SYNC_DEBUG */ + ulint n_mutexes); /* in: number of mutexes */ +#ifdef UNIV_SYNC_DEBUG +# define hash_create_mutexes(t,n,level) hash_create_mutexes_func(t,level,n) +#else /* UNIV_SYNC_DEBUG */ +# define hash_create_mutexes(t,n,level) hash_create_mutexes_func(t,n) +#endif /* UNIV_SYNC_DEBUG */ + +/***************************************************************** +Frees a hash table. */ +UNIV_INTERN +void +hash_table_free( +/*============*/ + hash_table_t* table); /* in, own: hash table */ +/****************************************************************** +Calculates the hash value from a folded value. */ +UNIV_INLINE +ulint +hash_calc_hash( +/*===========*/ + /* out: hashed value */ + ulint fold, /* in: folded value */ + hash_table_t* table); /* in: hash table */ +/************************************************************************ +Assert that the mutex for the table in a hash operation is owned. */ +#define HASH_ASSERT_OWNED(TABLE, FOLD) \ +ut_ad(!(TABLE)->mutexes || mutex_own(hash_get_mutex(TABLE, FOLD))); + +/*********************************************************************** +Inserts a struct to a hash table. */ + +#define HASH_INSERT(TYPE, NAME, TABLE, FOLD, DATA)\ +do {\ + hash_cell_t* cell3333;\ + TYPE* struct3333;\ +\ + HASH_ASSERT_OWNED(TABLE, FOLD)\ +\ + (DATA)->NAME = NULL;\ +\ + cell3333 = hash_get_nth_cell(TABLE, hash_calc_hash(FOLD, TABLE));\ +\ + if (cell3333->node == NULL) {\ + cell3333->node = DATA;\ + } else {\ + struct3333 = (TYPE*) cell3333->node;\ +\ + while (struct3333->NAME != NULL) {\ +\ + struct3333 = (TYPE*) struct3333->NAME;\ + }\ +\ + struct3333->NAME = DATA;\ + }\ +} while (0) + +#ifdef UNIV_HASH_DEBUG +# define HASH_ASSERT_VALID(DATA) ut_a((void*) (DATA) != (void*) -1) +# define HASH_INVALIDATE(DATA, NAME) DATA->NAME = (void*) -1 +#else +# define HASH_ASSERT_VALID(DATA) do {} while (0) +# define HASH_INVALIDATE(DATA, NAME) do {} while (0) +#endif + +/*********************************************************************** +Deletes a struct from a hash table. */ + +#define HASH_DELETE(TYPE, NAME, TABLE, FOLD, DATA)\ +do {\ + hash_cell_t* cell3333;\ + TYPE* struct3333;\ +\ + HASH_ASSERT_OWNED(TABLE, FOLD)\ +\ + cell3333 = hash_get_nth_cell(TABLE, hash_calc_hash(FOLD, TABLE));\ +\ + if (cell3333->node == DATA) {\ + HASH_ASSERT_VALID(DATA->NAME);\ + cell3333->node = DATA->NAME;\ + } else {\ + struct3333 = (TYPE*) cell3333->node;\ +\ + while (struct3333->NAME != DATA) {\ +\ + struct3333 = (TYPE*) struct3333->NAME;\ + ut_a(struct3333);\ + }\ +\ + struct3333->NAME = DATA->NAME;\ + }\ + HASH_INVALIDATE(DATA, NAME);\ +} while (0) + +/*********************************************************************** +Gets the first struct in a hash chain, NULL if none. */ + +#define HASH_GET_FIRST(TABLE, HASH_VAL)\ + (hash_get_nth_cell(TABLE, HASH_VAL)->node) + +/*********************************************************************** +Gets the next struct in a hash chain, NULL if none. */ + +#define HASH_GET_NEXT(NAME, DATA) ((DATA)->NAME) + +/************************************************************************ +Looks for a struct in a hash table. */ +#define HASH_SEARCH(NAME, TABLE, FOLD, TYPE, DATA, ASSERTION, TEST)\ +{\ +\ + HASH_ASSERT_OWNED(TABLE, FOLD)\ +\ + (DATA) = (TYPE) HASH_GET_FIRST(TABLE, hash_calc_hash(FOLD, TABLE));\ + HASH_ASSERT_VALID(DATA);\ +\ + while ((DATA) != NULL) {\ + ASSERTION;\ + if (TEST) {\ + break;\ + } else {\ + HASH_ASSERT_VALID(HASH_GET_NEXT(NAME, DATA));\ + (DATA) = (TYPE) HASH_GET_NEXT(NAME, DATA);\ + }\ + }\ +} + +/************************************************************************ +Looks for an item in all hash buckets. */ +#define HASH_SEARCH_ALL(NAME, TABLE, TYPE, DATA, ASSERTION, TEST) \ +do { \ + ulint i3333; \ + \ + for (i3333 = (TABLE)->n_cells; i3333--; ) { \ + (DATA) = (TYPE) HASH_GET_FIRST(TABLE, i3333); \ + \ + while ((DATA) != NULL) { \ + HASH_ASSERT_VALID(DATA); \ + ASSERTION; \ + \ + if (TEST) { \ + break; \ + } \ + \ + (DATA) = (TYPE) HASH_GET_NEXT(NAME, DATA); \ + } \ + \ + if ((DATA) != NULL) { \ + break; \ + } \ + } \ +} while (0) + +/**************************************************************** +Gets the nth cell in a hash table. */ +UNIV_INLINE +hash_cell_t* +hash_get_nth_cell( +/*==============*/ + /* out: pointer to cell */ + hash_table_t* table, /* in: hash table */ + ulint n); /* in: cell index */ + +/***************************************************************** +Clears a hash table so that all the cells become empty. */ +UNIV_INLINE +void +hash_table_clear( +/*=============*/ + hash_table_t* table); /* in/out: hash table */ + +/***************************************************************** +Returns the number of cells in a hash table. */ +UNIV_INLINE +ulint +hash_get_n_cells( +/*=============*/ + /* out: number of cells */ + hash_table_t* table); /* in: table */ +/*********************************************************************** +Deletes a struct which is stored in the heap of the hash table, and compacts +the heap. The fold value must be stored in the struct NODE in a field named +'fold'. */ + +#define HASH_DELETE_AND_COMPACT(TYPE, NAME, TABLE, NODE)\ +do {\ + TYPE* node111;\ + TYPE* top_node111;\ + hash_cell_t* cell111;\ + ulint fold111;\ +\ + fold111 = (NODE)->fold;\ +\ + HASH_DELETE(TYPE, NAME, TABLE, fold111, NODE);\ +\ + top_node111 = (TYPE*)mem_heap_get_top(\ + hash_get_heap(TABLE, fold111),\ + sizeof(TYPE));\ +\ + /* If the node to remove is not the top node in the heap, compact the\ + heap of nodes by moving the top node in the place of NODE. */\ +\ + if (NODE != top_node111) {\ +\ + /* Copy the top node in place of NODE */\ +\ + *(NODE) = *top_node111;\ +\ + cell111 = hash_get_nth_cell(TABLE,\ + hash_calc_hash(top_node111->fold, TABLE));\ +\ + /* Look for the pointer to the top node, to update it */\ +\ + if (cell111->node == top_node111) {\ + /* The top node is the first in the chain */\ +\ + cell111->node = NODE;\ + } else {\ + /* We have to look for the predecessor of the top\ + node */\ + node111 = cell111->node;\ +\ + while (top_node111 != HASH_GET_NEXT(NAME, node111)) {\ +\ + node111 = HASH_GET_NEXT(NAME, node111);\ + }\ +\ + /* Now we have the predecessor node */\ +\ + node111->NAME = NODE;\ + }\ + }\ +\ + /* Free the space occupied by the top node */\ +\ + mem_heap_free_top(hash_get_heap(TABLE, fold111), sizeof(TYPE));\ +} while (0) + +/******************************************************************** +Move all hash table entries from OLD_TABLE to NEW_TABLE.*/ + +#define HASH_MIGRATE(OLD_TABLE, NEW_TABLE, NODE_TYPE, PTR_NAME, FOLD_FUNC) \ +do {\ + ulint i2222;\ + ulint cell_count2222;\ +\ + cell_count2222 = hash_get_n_cells(OLD_TABLE);\ +\ + for (i2222 = 0; i2222 < cell_count2222; i2222++) {\ + NODE_TYPE* node2222 = HASH_GET_FIRST((OLD_TABLE), i2222);\ +\ + while (node2222) {\ + NODE_TYPE* next2222 = node2222->PTR_NAME;\ + ulint fold2222 = FOLD_FUNC(node2222);\ +\ + HASH_INSERT(NODE_TYPE, PTR_NAME, (NEW_TABLE),\ + fold2222, node2222);\ +\ + node2222 = next2222;\ + }\ + }\ +} while (0) + + +/**************************************************************** +Gets the mutex index for a fold value in a hash table. */ +UNIV_INLINE +ulint +hash_get_mutex_no( +/*==============*/ + /* out: mutex number */ + hash_table_t* table, /* in: hash table */ + ulint fold); /* in: fold */ +/**************************************************************** +Gets the nth heap in a hash table. */ +UNIV_INLINE +mem_heap_t* +hash_get_nth_heap( +/*==============*/ + /* out: mem heap */ + hash_table_t* table, /* in: hash table */ + ulint i); /* in: index of the heap */ +/**************************************************************** +Gets the heap for a fold value in a hash table. */ +UNIV_INLINE +mem_heap_t* +hash_get_heap( +/*==========*/ + /* out: mem heap */ + hash_table_t* table, /* in: hash table */ + ulint fold); /* in: fold */ +/**************************************************************** +Gets the nth mutex in a hash table. */ +UNIV_INLINE +mutex_t* +hash_get_nth_mutex( +/*===============*/ + /* out: mutex */ + hash_table_t* table, /* in: hash table */ + ulint i); /* in: index of the mutex */ +/**************************************************************** +Gets the mutex for a fold value in a hash table. */ +UNIV_INLINE +mutex_t* +hash_get_mutex( +/*===========*/ + /* out: mutex */ + hash_table_t* table, /* in: hash table */ + ulint fold); /* in: fold */ +/**************************************************************** +Reserves the mutex for a fold value in a hash table. */ +UNIV_INTERN +void +hash_mutex_enter( +/*=============*/ + hash_table_t* table, /* in: hash table */ + ulint fold); /* in: fold */ +/**************************************************************** +Releases the mutex for a fold value in a hash table. */ +UNIV_INTERN +void +hash_mutex_exit( +/*============*/ + hash_table_t* table, /* in: hash table */ + ulint fold); /* in: fold */ +/**************************************************************** +Reserves all the mutexes of a hash table, in an ascending order. */ +UNIV_INTERN +void +hash_mutex_enter_all( +/*=================*/ + hash_table_t* table); /* in: hash table */ +/**************************************************************** +Releases all the mutexes of a hash table. */ +UNIV_INTERN +void +hash_mutex_exit_all( +/*================*/ + hash_table_t* table); /* in: hash table */ + + +struct hash_cell_struct{ + void* node; /* hash chain node, NULL if none */ +}; + +/* The hash table structure */ +struct hash_table_struct { +#if defined UNIV_AHI_DEBUG || defined UNIV_DEBUG + ibool adaptive;/* TRUE if this is the hash table of the + adaptive hash index */ +#endif /* UNIV_AHI_DEBUG || UNIV_DEBUG */ + ulint n_cells;/* number of cells in the hash table */ + hash_cell_t* array; /* pointer to cell array */ + ulint n_mutexes;/* if mutexes != NULL, then the number of + mutexes, must be a power of 2 */ + mutex_t* mutexes;/* NULL, or an array of mutexes used to + protect segments of the hash table */ + mem_heap_t** heaps; /* if this is non-NULL, hash chain nodes for + external chaining can be allocated from these + memory heaps; there are then n_mutexes many of + these heaps */ + mem_heap_t* heap; + ulint magic_n; +}; + +#define HASH_TABLE_MAGIC_N 76561114 + +#ifndef UNIV_NONINL +#include "hash0hash.ic" +#endif + +#endif === added file 'storage/xtradb/include/hash0hash.ic' --- a/storage/xtradb/include/hash0hash.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/hash0hash.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,160 @@ +/***************************************************************************** + +Copyright (c) 1997, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +The simple hash table utility + +Created 5/20/1997 Heikki Tuuri +*******************************************************/ + +#include "ut0rnd.h" + +/**************************************************************** +Gets the nth cell in a hash table. */ +UNIV_INLINE +hash_cell_t* +hash_get_nth_cell( +/*==============*/ + /* out: pointer to cell */ + hash_table_t* table, /* in: hash table */ + ulint n) /* in: cell index */ +{ + ut_ad(n < table->n_cells); + + return(table->array + n); +} + +/***************************************************************** +Clears a hash table so that all the cells become empty. */ +UNIV_INLINE +void +hash_table_clear( +/*=============*/ + hash_table_t* table) /* in/out: hash table */ +{ + memset(table->array, 0x0, + table->n_cells * sizeof(*table->array)); +} + +/***************************************************************** +Returns the number of cells in a hash table. */ +UNIV_INLINE +ulint +hash_get_n_cells( +/*=============*/ + /* out: number of cells */ + hash_table_t* table) /* in: table */ +{ + return(table->n_cells); +} + +/****************************************************************** +Calculates the hash value from a folded value. */ +UNIV_INLINE +ulint +hash_calc_hash( +/*===========*/ + /* out: hashed value */ + ulint fold, /* in: folded value */ + hash_table_t* table) /* in: hash table */ +{ + return(ut_hash_ulint(fold, table->n_cells)); +} + +/**************************************************************** +Gets the mutex index for a fold value in a hash table. */ +UNIV_INLINE +ulint +hash_get_mutex_no( +/*==============*/ + /* out: mutex number */ + hash_table_t* table, /* in: hash table */ + ulint fold) /* in: fold */ +{ + ut_ad(ut_is_2pow(table->n_mutexes)); + return(ut_2pow_remainder(hash_calc_hash(fold, table), + table->n_mutexes)); +} + +/**************************************************************** +Gets the nth heap in a hash table. */ +UNIV_INLINE +mem_heap_t* +hash_get_nth_heap( +/*==============*/ + /* out: mem heap */ + hash_table_t* table, /* in: hash table */ + ulint i) /* in: index of the heap */ +{ + ut_ad(i < table->n_mutexes); + + return(table->heaps[i]); +} + +/**************************************************************** +Gets the heap for a fold value in a hash table. */ +UNIV_INLINE +mem_heap_t* +hash_get_heap( +/*==========*/ + /* out: mem heap */ + hash_table_t* table, /* in: hash table */ + ulint fold) /* in: fold */ +{ + ulint i; + + if (table->heap) { + return(table->heap); + } + + i = hash_get_mutex_no(table, fold); + + return(hash_get_nth_heap(table, i)); +} + +/**************************************************************** +Gets the nth mutex in a hash table. */ +UNIV_INLINE +mutex_t* +hash_get_nth_mutex( +/*===============*/ + /* out: mutex */ + hash_table_t* table, /* in: hash table */ + ulint i) /* in: index of the mutex */ +{ + ut_ad(i < table->n_mutexes); + + return(table->mutexes + i); +} + +/**************************************************************** +Gets the mutex for a fold value in a hash table. */ +UNIV_INLINE +mutex_t* +hash_get_mutex( +/*===========*/ + /* out: mutex */ + hash_table_t* table, /* in: hash table */ + ulint fold) /* in: fold */ +{ + ulint i; + + i = hash_get_mutex_no(table, fold); + + return(hash_get_nth_mutex(table, i)); +} === added file 'storage/xtradb/include/ibuf0ibuf.h' --- a/storage/xtradb/include/ibuf0ibuf.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/ibuf0ibuf.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,369 @@ +/***************************************************************************** + +Copyright (c) 1997, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Insert buffer + +Created 7/19/1997 Heikki Tuuri +*******************************************************/ + +#ifndef ibuf0ibuf_h +#define ibuf0ibuf_h + +#include "univ.i" + +#include "dict0mem.h" +#include "mtr0mtr.h" +#include "que0types.h" +#include "ibuf0types.h" +#include "fsp0fsp.h" + +/** Combinations of operations that can be buffered. Because the enum +values are used for indexing innobase_change_buffering_values[], they +should start at 0 and there should not be any gaps. */ +typedef enum { + IBUF_USE_NONE = 0, + IBUF_USE_INSERT, /* insert */ + + IBUF_USE_COUNT /* number of entries in ibuf_use_t */ +} ibuf_use_t; + +/** Operations that can currently be buffered. */ +extern ibuf_use_t ibuf_use; + +/** The insert buffer control structure */ +extern ibuf_t* ibuf; + +/* The purpose of the insert buffer is to reduce random disk access. +When we wish to insert a record into a non-unique secondary index and +the B-tree leaf page where the record belongs to is not in the buffer +pool, we insert the record into the insert buffer B-tree, indexed by +(space_id, page_no). When the page is eventually read into the buffer +pool, we look up the insert buffer B-tree for any modifications to the +page, and apply these upon the completion of the read operation. This +is called the insert buffer merge. */ + +/* The insert buffer merge must always succeed. To guarantee this, +the insert buffer subsystem keeps track of the free space in pages for +which it can buffer operations. Two bits per page in the insert +buffer bitmap indicate the available space in coarse increments. The +free bits in the insert buffer bitmap must never exceed the free space +on a page. It is safe to decrement or reset the bits in the bitmap in +a mini-transaction that is committed before the mini-transaction that +affects the free space. It is unsafe to increment the bits in a +separately committed mini-transaction, because in crash recovery, the +free bits could momentarily be set too high. */ + +/********************************************************************** +Creates the insert buffer data structure at a database startup and +initializes the data structures for the insert buffer of each tablespace. */ +UNIV_INTERN +void +ibuf_init_at_db_start(void); +/*=======================*/ +/************************************************************************* +Reads the biggest tablespace id from the high end of the insert buffer +tree and updates the counter in fil_system. */ +UNIV_INTERN +void +ibuf_update_max_tablespace_id(void); +/*===============================*/ +/************************************************************************* +Initializes an ibuf bitmap page. */ +UNIV_INTERN +void +ibuf_bitmap_page_init( +/*==================*/ + buf_block_t* block, /* in: bitmap page */ + mtr_t* mtr); /* in: mtr */ +/**************************************************************************** +Resets the free bits of the page in the ibuf bitmap. This is done in a +separate mini-transaction, hence this operation does not restrict +further work to only ibuf bitmap operations, which would result if the +latch to the bitmap page were kept. NOTE: The free bits in the insert +buffer bitmap must never exceed the free space on a page. It is safe +to decrement or reset the bits in the bitmap in a mini-transaction +that is committed before the mini-transaction that affects the free +space. */ +UNIV_INTERN +void +ibuf_reset_free_bits( +/*=================*/ + buf_block_t* block); /* in: index page; free bits are set to 0 + if the index is a non-clustered + non-unique, and page level is 0 */ +/**************************************************************************** +Updates the free bits of an uncompressed page in the ibuf bitmap if +there is not enough free on the page any more. This is done in a +separate mini-transaction, hence this operation does not restrict +further work to only ibuf bitmap operations, which would result if the +latch to the bitmap page were kept. NOTE: The free bits in the insert +buffer bitmap must never exceed the free space on a page. It is +unsafe to increment the bits in a separately committed +mini-transaction, because in crash recovery, the free bits could +momentarily be set too high. It is only safe to use this function for +decrementing the free bits. Should more free space become available, +we must not update the free bits here, because that would break crash +recovery. */ +UNIV_INLINE +void +ibuf_update_free_bits_if_full( +/*==========================*/ + buf_block_t* block, /* in: index page to which we have added new + records; the free bits are updated if the + index is non-clustered and non-unique and + the page level is 0, and the page becomes + fuller */ + ulint max_ins_size,/* in: value of maximum insert size with + reorganize before the latest operation + performed to the page */ + ulint increase);/* in: upper limit for the additional space + used in the latest operation, if known, or + ULINT_UNDEFINED */ +/************************************************************************** +Updates the free bits for an uncompressed page to reflect the present +state. Does this in the mtr given, which means that the latching +order rules virtually prevent any further operations for this OS +thread until mtr is committed. NOTE: The free bits in the insert +buffer bitmap must never exceed the free space on a page. It is safe +to set the free bits in the same mini-transaction that updated the +page. */ +UNIV_INTERN +void +ibuf_update_free_bits_low( +/*======================*/ + const buf_block_t* block, /* in: index page */ + ulint max_ins_size, /* in: value of + maximum insert size + with reorganize before + the latest operation + performed to the page */ + mtr_t* mtr); /* in/out: mtr */ +/************************************************************************** +Updates the free bits for a compressed page to reflect the present +state. Does this in the mtr given, which means that the latching +order rules virtually prevent any further operations for this OS +thread until mtr is committed. NOTE: The free bits in the insert +buffer bitmap must never exceed the free space on a page. It is safe +to set the free bits in the same mini-transaction that updated the +page. */ +UNIV_INTERN +void +ibuf_update_free_bits_zip( +/*======================*/ + buf_block_t* block, /* in/out: index page */ + mtr_t* mtr); /* in/out: mtr */ +/************************************************************************** +Updates the free bits for the two pages to reflect the present state. +Does this in the mtr given, which means that the latching order rules +virtually prevent any further operations until mtr is committed. +NOTE: The free bits in the insert buffer bitmap must never exceed the +free space on a page. It is safe to set the free bits in the same +mini-transaction that updated the pages. */ +UNIV_INTERN +void +ibuf_update_free_bits_for_two_pages_low( +/*====================================*/ + ulint zip_size,/* in: compressed page size in bytes; + 0 for uncompressed pages */ + buf_block_t* block1, /* in: index page */ + buf_block_t* block2, /* in: index page */ + mtr_t* mtr); /* in: mtr */ +/************************************************************************** +A basic partial test if an insert to the insert buffer could be possible and +recommended. */ +UNIV_INLINE +ibool +ibuf_should_try( +/*============*/ + dict_index_t* index, /* in: index where to insert */ + ulint ignore_sec_unique); /* in: if != 0, we should + ignore UNIQUE constraint on + a secondary index when we + decide */ +/********************************************************************** +Returns TRUE if the current OS thread is performing an insert buffer +routine. */ +UNIV_INTERN +ibool +ibuf_inside(void); +/*=============*/ + /* out: TRUE if inside an insert buffer routine: for instance, + a read-ahead of non-ibuf pages is then forbidden */ +/*************************************************************************** +Checks if a page address is an ibuf bitmap page (level 3 page) address. */ +UNIV_INLINE +ibool +ibuf_bitmap_page( +/*=============*/ + /* out: TRUE if a bitmap page */ + ulint zip_size,/* in: compressed page size in bytes; + 0 for uncompressed pages */ + ulint page_no);/* in: page number */ +/*************************************************************************** +Checks if a page is a level 2 or 3 page in the ibuf hierarchy of pages. +Must not be called when recv_no_ibuf_operations==TRUE. */ +UNIV_INTERN +ibool +ibuf_page( +/*======*/ + /* out: TRUE if level 2 or level 3 page */ + ulint space, /* in: space id */ + ulint zip_size,/* in: compressed page size in bytes, or 0 */ + ulint page_no,/* in: page number */ + mtr_t* mtr); /* in: mtr which will contain an x-latch to the + bitmap page if the page is not one of the fixed + address ibuf pages, or NULL, in which case a new + transaction is created. */ +/*************************************************************************** +Frees excess pages from the ibuf free list. This function is called when an OS +thread calls fsp services to allocate a new file segment, or a new page to a +file segment, and the thread did not own the fsp latch before this call. */ +UNIV_INTERN +void +ibuf_free_excess_pages(void); +/*========================*/ +/************************************************************************* +Makes an index insert to the insert buffer, instead of directly to the disk +page, if this is possible. Does not do insert if the index is clustered +or unique. */ +UNIV_INTERN +ibool +ibuf_insert( +/*========*/ + /* out: TRUE if success */ + const dtuple_t* entry, /* in: index entry to insert */ + dict_index_t* index, /* in: index where to insert */ + ulint space, /* in: space id where to insert */ + ulint zip_size,/* in: compressed page size in bytes, or 0 */ + ulint page_no,/* in: page number where to insert */ + que_thr_t* thr); /* in: query thread */ +/************************************************************************* +When an index page is read from a disk to the buffer pool, this function +inserts to the page the possible index entries buffered in the insert buffer. +The entries are deleted from the insert buffer. If the page is not read, but +created in the buffer pool, this function deletes its buffered entries from +the insert buffer; there can exist entries for such a page if the page +belonged to an index which subsequently was dropped. */ +UNIV_INTERN +void +ibuf_merge_or_delete_for_page( +/*==========================*/ + buf_block_t* block, /* in: if page has been read from + disk, pointer to the page x-latched, + else NULL */ + ulint space, /* in: space id of the index page */ + ulint page_no,/* in: page number of the index page */ + ulint zip_size,/* in: compressed page size in bytes, + or 0 */ + ibool update_ibuf_bitmap);/* in: normally this is set + to TRUE, but if we have deleted or are + deleting the tablespace, then we + naturally do not want to update a + non-existent bitmap page */ +/************************************************************************* +Deletes all entries in the insert buffer for a given space id. This is used +in DISCARD TABLESPACE and IMPORT TABLESPACE. +NOTE: this does not update the page free bitmaps in the space. The space will +become CORRUPT when you call this function! */ +UNIV_INTERN +void +ibuf_delete_for_discarded_space( +/*============================*/ + ulint space); /* in: space id */ +/************************************************************************* +Contracts insert buffer trees by reading pages to the buffer pool. */ +UNIV_INTERN +ulint +ibuf_contract( +/*==========*/ + /* out: a lower limit for the combined size in bytes + of entries which will be merged from ibuf trees to the + pages read, 0 if ibuf is empty */ + ibool sync); /* in: TRUE if the caller wants to wait for the + issued read with the highest tablespace address + to complete */ +/************************************************************************* +Contracts insert buffer trees by reading pages to the buffer pool. */ +UNIV_INTERN +ulint +ibuf_contract_for_n_pages( +/*======================*/ + /* out: a lower limit for the combined size in bytes + of entries which will be merged from ibuf trees to the + pages read, 0 if ibuf is empty */ + ibool sync, /* in: TRUE if the caller wants to wait for the + issued read with the highest tablespace address + to complete */ + ulint n_pages);/* in: try to read at least this many pages to + the buffer pool and merge the ibuf contents to + them */ +/************************************************************************* +Parses a redo log record of an ibuf bitmap page init. */ +UNIV_INTERN +byte* +ibuf_parse_bitmap_init( +/*===================*/ + /* out: end of log record or NULL */ + byte* ptr, /* in: buffer */ + byte* end_ptr,/* in: buffer end */ + buf_block_t* block, /* in: block or NULL */ + mtr_t* mtr); /* in: mtr or NULL */ +#ifdef UNIV_IBUF_COUNT_DEBUG +/********************************************************************** +Gets the ibuf count for a given page. */ +UNIV_INTERN +ulint +ibuf_count_get( +/*===========*/ + /* out: number of entries in the insert buffer + currently buffered for this page */ + ulint space, /* in: space id */ + ulint page_no);/* in: page number */ +#endif +/********************************************************************** +Looks if the insert buffer is empty. */ +UNIV_INTERN +ibool +ibuf_is_empty(void); +/*===============*/ + /* out: TRUE if empty */ +/********************************************************************** +Prints info of ibuf. */ +UNIV_INTERN +void +ibuf_print( +/*=======*/ + FILE* file); /* in: file where to print */ + +#define IBUF_HEADER_PAGE_NO FSP_IBUF_HEADER_PAGE_NO +#define IBUF_TREE_ROOT_PAGE_NO FSP_IBUF_TREE_ROOT_PAGE_NO + +/* The ibuf header page currently contains only the file segment header +for the file segment from which the pages for the ibuf tree are allocated */ +#define IBUF_HEADER PAGE_DATA +#define IBUF_TREE_SEG_HEADER 0 /* fseg header for ibuf tree */ + +/* The insert buffer tree itself is always located in space 0. */ +#define IBUF_SPACE_ID 0 + +#ifndef UNIV_NONINL +#include "ibuf0ibuf.ic" +#endif + +#endif === added file 'storage/xtradb/include/ibuf0ibuf.ic' --- a/storage/xtradb/include/ibuf0ibuf.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/ibuf0ibuf.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,325 @@ +/***************************************************************************** + +Copyright (c) 1997, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Insert buffer + +Created 7/19/1997 Heikki Tuuri +*******************************************************/ + +#include "buf0lru.h" +#include "page0page.h" +#include "page0zip.h" + +extern ulint ibuf_flush_count; + +/* If this number is n, an index page must contain at least the page size +per n bytes of free space for ibuf to try to buffer inserts to this page. +If there is this much of free space, the corresponding bits are set in the +ibuf bitmap. */ +#define IBUF_PAGE_SIZE_PER_FREE_SPACE 32 + +/* Insert buffer struct */ + +struct ibuf_struct{ + ulint size; /* current size of the ibuf index + tree, in pages */ + ulint max_size; /* recommended maximum size of the + ibuf index tree, in pages */ + ulint seg_size; /* allocated pages of the file + segment containing ibuf header and + tree */ + ibool empty; /* after an insert to the ibuf tree + is performed, this is set to FALSE, + and if a contract operation finds + the tree empty, this is set to + TRUE */ + ulint free_list_len; /* length of the free list */ + ulint height; /* tree height */ + dict_index_t* index; /* insert buffer index */ + + ulint n_inserts; /* number of inserts made to + the insert buffer */ + ulint n_merges; /* number of pages merged */ + ulint n_merged_recs; /* number of records merged */ +}; + +/**************************************************************************** +Sets the free bit of the page in the ibuf bitmap. This is done in a separate +mini-transaction, hence this operation does not restrict further work to only +ibuf bitmap operations, which would result if the latch to the bitmap page +were kept. */ +UNIV_INTERN +void +ibuf_set_free_bits_func( +/*====================*/ + buf_block_t* block, /* in: index page of a non-clustered index; + free bit is reset if page level is 0 */ +#ifdef UNIV_IBUF_DEBUG + ulint max_val,/* in: ULINT_UNDEFINED or a maximum + value which the bits must have before + setting; this is for debugging */ +#endif /* UNIV_IBUF_DEBUG */ + ulint val); /* in: value to set: < 4 */ +#ifdef UNIV_IBUF_DEBUG +# define ibuf_set_free_bits(b,v,max) ibuf_set_free_bits_func(b,max,v) +#else /* UNIV_IBUF_DEBUG */ +# define ibuf_set_free_bits(b,v,max) ibuf_set_free_bits_func(b,v) +#endif /* UNIV_IBUF_DEBUG */ + +/************************************************************************** +A basic partial test if an insert to the insert buffer could be possible and +recommended. */ +UNIV_INLINE +ibool +ibuf_should_try( +/*============*/ + dict_index_t* index, /* in: index where to insert */ + ulint ignore_sec_unique) /* in: if != 0, we should + ignore UNIQUE constraint on + a secondary index when we + decide */ +{ + if (ibuf_use != IBUF_USE_NONE + && !dict_index_is_clust(index) + && (ignore_sec_unique || !dict_index_is_unique(index))) { + + ibuf_flush_count++; + + if (ibuf_flush_count % 4 == 0) { + + buf_LRU_try_free_flushed_blocks(); + } + + return(TRUE); + } + + return(FALSE); +} + +/*************************************************************************** +Checks if a page address is an ibuf bitmap page address. */ +UNIV_INLINE +ibool +ibuf_bitmap_page( +/*=============*/ + /* out: TRUE if a bitmap page */ + ulint zip_size,/* in: compressed page size in bytes; + 0 for uncompressed pages */ + ulint page_no)/* in: page number */ +{ + ut_ad(ut_is_2pow(zip_size)); + + if (!zip_size) { + return(UNIV_UNLIKELY((page_no & (UNIV_PAGE_SIZE - 1)) + == FSP_IBUF_BITMAP_OFFSET)); + } + + return(UNIV_UNLIKELY((page_no & (zip_size - 1)) + == FSP_IBUF_BITMAP_OFFSET)); +} + +/************************************************************************* +Translates the free space on a page to a value in the ibuf bitmap.*/ +UNIV_INLINE +ulint +ibuf_index_page_calc_free_bits( +/*===========================*/ + /* out: value for ibuf bitmap bits */ + ulint zip_size, /* in: compressed page size in bytes; + 0 for uncompressed pages */ + ulint max_ins_size) /* in: maximum insert size after reorganize + for the page */ +{ + ulint n; + ut_ad(ut_is_2pow(zip_size)); + ut_ad(!zip_size || zip_size > IBUF_PAGE_SIZE_PER_FREE_SPACE); + ut_ad(zip_size <= UNIV_PAGE_SIZE); + + if (zip_size) { + n = max_ins_size + / (zip_size / IBUF_PAGE_SIZE_PER_FREE_SPACE); + } else { + n = max_ins_size + / (UNIV_PAGE_SIZE / IBUF_PAGE_SIZE_PER_FREE_SPACE); + } + + if (n == 3) { + n = 2; + } + + if (n > 3) { + n = 3; + } + + return(n); +} + +/************************************************************************* +Translates the ibuf free bits to the free space on a page in bytes. */ +UNIV_INLINE +ulint +ibuf_index_page_calc_free_from_bits( +/*================================*/ + /* out: maximum insert size after reorganize for the + page */ + ulint zip_size,/* in: compressed page size in bytes; + 0 for uncompressed pages */ + ulint bits) /* in: value for ibuf bitmap bits */ +{ + ut_ad(bits < 4); + ut_ad(ut_is_2pow(zip_size)); + ut_ad(!zip_size || zip_size > IBUF_PAGE_SIZE_PER_FREE_SPACE); + ut_ad(zip_size <= UNIV_PAGE_SIZE); + + if (zip_size) { + if (bits == 3) { + return(4 * zip_size / IBUF_PAGE_SIZE_PER_FREE_SPACE); + } + + return(bits * zip_size / IBUF_PAGE_SIZE_PER_FREE_SPACE); + } + + if (bits == 3) { + return(4 * UNIV_PAGE_SIZE / IBUF_PAGE_SIZE_PER_FREE_SPACE); + } + + return(bits * (UNIV_PAGE_SIZE / IBUF_PAGE_SIZE_PER_FREE_SPACE)); +} + +/************************************************************************* +Translates the free space on a compressed page to a value in the ibuf bitmap.*/ +UNIV_INLINE +ulint +ibuf_index_page_calc_free_zip( +/*==========================*/ + /* out: value for ibuf bitmap bits */ + ulint zip_size, + /* in: compressed page size in bytes */ + const buf_block_t* block) /* in: buffer block */ +{ + ulint max_ins_size; + const page_zip_des_t* page_zip; + lint zip_max_ins; + + ut_ad(zip_size == buf_block_get_zip_size(block)); + ut_ad(zip_size); + + max_ins_size = page_get_max_insert_size_after_reorganize( + buf_block_get_frame(block), 1); + + page_zip = buf_block_get_page_zip(block); + zip_max_ins = page_zip_max_ins_size(page_zip, + FALSE/* not clustered */); + + if (UNIV_UNLIKELY(zip_max_ins < 0)) { + return(0); + } else if (UNIV_LIKELY(max_ins_size > (ulint) zip_max_ins)) { + max_ins_size = (ulint) zip_max_ins; + } + + return(ibuf_index_page_calc_free_bits(zip_size, max_ins_size)); +} + +/************************************************************************* +Translates the free space on a page to a value in the ibuf bitmap.*/ +UNIV_INLINE +ulint +ibuf_index_page_calc_free( +/*======================*/ + /* out: value for ibuf bitmap bits */ + ulint zip_size,/* in: compressed page size in bytes; + 0 for uncompressed pages */ + const buf_block_t* block) /* in: buffer block */ +{ + ut_ad(zip_size == buf_block_get_zip_size(block)); + + if (!zip_size) { + ulint max_ins_size; + + max_ins_size = page_get_max_insert_size_after_reorganize( + buf_block_get_frame(block), 1); + + return(ibuf_index_page_calc_free_bits(0, max_ins_size)); + } else { + return(ibuf_index_page_calc_free_zip(zip_size, block)); + } +} + +/**************************************************************************** +Updates the free bits of an uncompressed page in the ibuf bitmap if +there is not enough free on the page any more. This is done in a +separate mini-transaction, hence this operation does not restrict +further work to only ibuf bitmap operations, which would result if the +latch to the bitmap page were kept. NOTE: The free bits in the insert +buffer bitmap must never exceed the free space on a page. It is +unsafe to increment the bits in a separately committed +mini-transaction, because in crash recovery, the free bits could +momentarily be set too high. It is only safe to use this function for +decrementing the free bits. Should more free space become available, +we must not update the free bits here, because that would break crash +recovery. */ +UNIV_INLINE +void +ibuf_update_free_bits_if_full( +/*==========================*/ + buf_block_t* block, /* in: index page to which we have added new + records; the free bits are updated if the + index is non-clustered and non-unique and + the page level is 0, and the page becomes + fuller */ + ulint max_ins_size,/* in: value of maximum insert size with + reorganize before the latest operation + performed to the page */ + ulint increase)/* in: upper limit for the additional space + used in the latest operation, if known, or + ULINT_UNDEFINED */ +{ + ulint before; + ulint after; + + ut_ad(!buf_block_get_page_zip(block)); + + before = ibuf_index_page_calc_free_bits(0, max_ins_size); + + if (max_ins_size >= increase) { +#if ULINT32_UNDEFINED <= UNIV_PAGE_SIZE +# error "ULINT32_UNDEFINED <= UNIV_PAGE_SIZE" +#endif + after = ibuf_index_page_calc_free_bits(0, max_ins_size + - increase); +#ifdef UNIV_IBUF_DEBUG + ut_a(after <= ibuf_index_page_calc_free(0, block)); +#endif + } else { + after = ibuf_index_page_calc_free(0, block); + } + + if (after == 0) { + /* We move the page to the front of the buffer pool LRU list: + the purpose of this is to prevent those pages to which we + cannot make inserts using the insert buffer from slipping + out of the buffer pool */ + + buf_page_make_young(&block->page); + } + + if (before > after) { + ibuf_set_free_bits(block, after, before); + } +} === added file 'storage/xtradb/include/ibuf0types.h' --- a/storage/xtradb/include/ibuf0types.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/ibuf0types.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,30 @@ +/***************************************************************************** + +Copyright (c) 1997, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Insert buffer global types + +Created 7/29/1997 Heikki Tuuri +*******************************************************/ + +#ifndef ibuf0types_h +#define ibuf0types_h + +typedef struct ibuf_struct ibuf_t; + +#endif === added file 'storage/xtradb/include/lock0iter.h' --- a/storage/xtradb/include/lock0iter.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/lock0iter.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,68 @@ +/***************************************************************************** + +Copyright (c) 2007, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Lock queue iterator type and function prototypes. + +Created July 16, 2007 Vasil Dimov +*******************************************************/ + +#ifndef lock0iter_h +#define lock0iter_h + +#include "univ.i" +#include "lock0types.h" + +typedef struct lock_queue_iterator_struct { + const lock_t* current_lock; + /* In case this is a record lock queue (not table lock queue) + then bit_no is the record number within the heap in which the + record is stored. */ + ulint bit_no; +} lock_queue_iterator_t; + +/*********************************************************************** +Initialize lock queue iterator so that it starts to iterate from +"lock". bit_no specifies the record number within the heap where the +record is stored. It can be undefined (ULINT_UNDEFINED) in two cases: +1. If the lock is a table lock, thus we have a table lock queue; +2. If the lock is a record lock and it is a wait lock. In this case + bit_no is calculated in this function by using + lock_rec_find_set_bit(). There is exactly one bit set in the bitmap + of a wait lock. */ +UNIV_INTERN +void +lock_queue_iterator_reset( +/*======================*/ + lock_queue_iterator_t* iter, /* out: iterator */ + const lock_t* lock, /* in: lock to start from */ + ulint bit_no);/* in: record number in the + heap */ + +/*********************************************************************** +Gets the previous lock in the lock queue, returns NULL if there are no +more locks (i.e. the current lock is the first one). The iterator is +receded (if not-NULL is returned). */ + +const lock_t* +lock_queue_iterator_get_prev( +/*=========================*/ + /* out: previous lock or NULL */ + lock_queue_iterator_t* iter); /* in/out: iterator */ + +#endif /* lock0iter_h */ === added file 'storage/xtradb/include/lock0lock.h' --- a/storage/xtradb/include/lock0lock.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/lock0lock.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,838 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +The transaction lock system + +Created 5/7/1996 Heikki Tuuri +*******************************************************/ + +#ifndef lock0lock_h +#define lock0lock_h + +#include "univ.i" +#include "buf0types.h" +#include "trx0types.h" +#include "rem0types.h" +#include "dict0types.h" +#include "que0types.h" +#include "lock0types.h" +#include "read0types.h" +#include "hash0hash.h" +#include "ut0vec.h" + +#ifdef UNIV_DEBUG +extern ibool lock_print_waits; +#endif /* UNIV_DEBUG */ +/* Buffer for storing information about the most recent deadlock error */ +extern FILE* lock_latest_err_file; + +/************************************************************************* +Gets the size of a lock struct. */ +UNIV_INTERN +ulint +lock_get_size(void); +/*===============*/ + /* out: size in bytes */ +/************************************************************************* +Creates the lock system at database start. */ +UNIV_INTERN +void +lock_sys_create( +/*============*/ + ulint n_cells); /* in: number of slots in lock hash table */ +/************************************************************************* +Checks if some transaction has an implicit x-lock on a record in a clustered +index. */ +UNIV_INLINE +trx_t* +lock_clust_rec_some_has_impl( +/*=========================*/ + /* out: transaction which has the x-lock, or + NULL */ + const rec_t* rec, /* in: user record */ + dict_index_t* index, /* in: clustered index */ + const ulint* offsets);/* in: rec_get_offsets(rec, index) */ +/************************************************************************* +Gets the heap_no of the smallest user record on a page. */ +UNIV_INLINE +ulint +lock_get_min_heap_no( +/*=================*/ + /* out: heap_no of smallest + user record, or + PAGE_HEAP_NO_SUPREMUM */ + const buf_block_t* block); /* in: buffer block */ +/***************************************************************** +Updates the lock table when we have reorganized a page. NOTE: we copy +also the locks set on the infimum of the page; the infimum may carry +locks if an update of a record is occurring on the page, and its locks +were temporarily stored on the infimum. */ +UNIV_INTERN +void +lock_move_reorganize_page( +/*======================*/ + const buf_block_t* block, /* in: old index page, now + reorganized */ + const buf_block_t* oblock);/* in: copy of the old, not + reorganized page */ +/***************************************************************** +Moves the explicit locks on user records to another page if a record +list end is moved to another page. */ +UNIV_INTERN +void +lock_move_rec_list_end( +/*===================*/ + const buf_block_t* new_block, /* in: index page to move to */ + const buf_block_t* block, /* in: index page */ + const rec_t* rec); /* in: record on page: this + is the first record moved */ +/***************************************************************** +Moves the explicit locks on user records to another page if a record +list start is moved to another page. */ +UNIV_INTERN +void +lock_move_rec_list_start( +/*=====================*/ + const buf_block_t* new_block, /* in: index page to move to */ + const buf_block_t* block, /* in: index page */ + const rec_t* rec, /* in: record on page: + this is the first + record NOT copied */ + const rec_t* old_end); /* in: old + previous-to-last + record on new_page + before the records + were copied */ +/***************************************************************** +Updates the lock table when a page is split to the right. */ +UNIV_INTERN +void +lock_update_split_right( +/*====================*/ + const buf_block_t* right_block, /* in: right page */ + const buf_block_t* left_block); /* in: left page */ +/***************************************************************** +Updates the lock table when a page is merged to the right. */ +UNIV_INTERN +void +lock_update_merge_right( +/*====================*/ + const buf_block_t* right_block, /* in: right page to + which merged */ + const rec_t* orig_succ, /* in: original + successor of infimum + on the right page + before merge */ + const buf_block_t* left_block); /* in: merged index + page which will be + discarded */ +/***************************************************************** +Updates the lock table when the root page is copied to another in +btr_root_raise_and_insert. Note that we leave lock structs on the +root page, even though they do not make sense on other than leaf +pages: the reason is that in a pessimistic update the infimum record +of the root page will act as a dummy carrier of the locks of the record +to be updated. */ +UNIV_INTERN +void +lock_update_root_raise( +/*===================*/ + const buf_block_t* block, /* in: index page to which copied */ + const buf_block_t* root); /* in: root page */ +/***************************************************************** +Updates the lock table when a page is copied to another and the original page +is removed from the chain of leaf pages, except if page is the root! */ +UNIV_INTERN +void +lock_update_copy_and_discard( +/*=========================*/ + const buf_block_t* new_block, /* in: index page to + which copied */ + const buf_block_t* block); /* in: index page; + NOT the root! */ +/***************************************************************** +Updates the lock table when a page is split to the left. */ +UNIV_INTERN +void +lock_update_split_left( +/*===================*/ + const buf_block_t* right_block, /* in: right page */ + const buf_block_t* left_block); /* in: left page */ +/***************************************************************** +Updates the lock table when a page is merged to the left. */ +UNIV_INTERN +void +lock_update_merge_left( +/*===================*/ + const buf_block_t* left_block, /* in: left page to + which merged */ + const rec_t* orig_pred, /* in: original predecessor + of supremum on the left page + before merge */ + const buf_block_t* right_block); /* in: merged index page + which will be discarded */ +/***************************************************************** +Resets the original locks on heir and replaces them with gap type locks +inherited from rec. */ +UNIV_INTERN +void +lock_rec_reset_and_inherit_gap_locks( +/*=================================*/ + const buf_block_t* heir_block, /* in: block containing the + record which inherits */ + const buf_block_t* block, /* in: block containing the + record from which inherited; + does NOT reset the locks on + this record */ + ulint heir_heap_no, /* in: heap_no of the + inheriting record */ + ulint heap_no); /* in: heap_no of the + donating record */ +/***************************************************************** +Updates the lock table when a page is discarded. */ +UNIV_INTERN +void +lock_update_discard( +/*================*/ + const buf_block_t* heir_block, /* in: index page + which will inherit the locks */ + ulint heir_heap_no, /* in: heap_no of the record + which will inherit the locks */ + const buf_block_t* block); /* in: index page + which will be discarded */ +/***************************************************************** +Updates the lock table when a new user record is inserted. */ +UNIV_INTERN +void +lock_update_insert( +/*===============*/ + const buf_block_t* block, /* in: buffer block containing rec */ + const rec_t* rec); /* in: the inserted record */ +/***************************************************************** +Updates the lock table when a record is removed. */ +UNIV_INTERN +void +lock_update_delete( +/*===============*/ + const buf_block_t* block, /* in: buffer block containing rec */ + const rec_t* rec); /* in: the record to be removed */ +/************************************************************************* +Stores on the page infimum record the explicit locks of another record. +This function is used to store the lock state of a record when it is +updated and the size of the record changes in the update. The record +is in such an update moved, perhaps to another page. The infimum record +acts as a dummy carrier record, taking care of lock releases while the +actual record is being moved. */ +UNIV_INTERN +void +lock_rec_store_on_page_infimum( +/*===========================*/ + const buf_block_t* block, /* in: buffer block containing rec */ + const rec_t* rec); /* in: record whose lock state + is stored on the infimum + record of the same page; lock + bits are reset on the + record */ +/************************************************************************* +Restores the state of explicit lock requests on a single record, where the +state was stored on the infimum of the page. */ +UNIV_INTERN +void +lock_rec_restore_from_page_infimum( +/*===============================*/ + const buf_block_t* block, /* in: buffer block containing rec */ + const rec_t* rec, /* in: record whose lock state + is restored */ + const buf_block_t* donator);/* in: page (rec is not + necessarily on this page) + whose infimum stored the lock + state; lock bits are reset on + the infimum */ +/************************************************************************* +Returns TRUE if there are explicit record locks on a page. */ +UNIV_INTERN +ibool +lock_rec_expl_exist_on_page( +/*========================*/ + /* out: TRUE if there are explicit record locks on + the page */ + ulint space, /* in: space id */ + ulint page_no);/* in: page number */ +/************************************************************************* +Checks if locks of other transactions prevent an immediate insert of +a record. If they do, first tests if the query thread should anyway +be suspended for some reason; if not, then puts the transaction and +the query thread to the lock wait state and inserts a waiting request +for a gap x-lock to the lock queue. */ +UNIV_INTERN +ulint +lock_rec_insert_check_and_lock( +/*===========================*/ + /* out: DB_SUCCESS, DB_LOCK_WAIT, + DB_DEADLOCK, or DB_QUE_THR_SUSPENDED */ + ulint flags, /* in: if BTR_NO_LOCKING_FLAG bit is + set, does nothing */ + rec_t* rec, /* in: record after which to insert */ + buf_block_t* block, /* in/out: buffer block of rec */ + dict_index_t* index, /* in: index */ + que_thr_t* thr, /* in: query thread */ + ibool* inherit);/* out: set to TRUE if the new + inserted record maybe should inherit + LOCK_GAP type locks from the successor + record */ +/************************************************************************* +Checks if locks of other transactions prevent an immediate modify (update, +delete mark, or delete unmark) of a clustered index record. If they do, +first tests if the query thread should anyway be suspended for some +reason; if not, then puts the transaction and the query thread to the +lock wait state and inserts a waiting request for a record x-lock to the +lock queue. */ +UNIV_INTERN +ulint +lock_clust_rec_modify_check_and_lock( +/*=================================*/ + /* out: DB_SUCCESS, + DB_LOCK_WAIT, DB_DEADLOCK, or + DB_QUE_THR_SUSPENDED */ + ulint flags, /* in: if BTR_NO_LOCKING_FLAG + bit is set, does nothing */ + const buf_block_t* block, /* in: buffer block of rec */ + const rec_t* rec, /* in: record which should be + modified */ + dict_index_t* index, /* in: clustered index */ + const ulint* offsets,/* in: rec_get_offsets(rec, index) */ + que_thr_t* thr); /* in: query thread */ +/************************************************************************* +Checks if locks of other transactions prevent an immediate modify +(delete mark or delete unmark) of a secondary index record. */ +UNIV_INTERN +ulint +lock_sec_rec_modify_check_and_lock( +/*===============================*/ + /* out: DB_SUCCESS, DB_LOCK_WAIT, + DB_DEADLOCK, or DB_QUE_THR_SUSPENDED */ + ulint flags, /* in: if BTR_NO_LOCKING_FLAG + bit is set, does nothing */ + buf_block_t* block, /* in/out: buffer block of rec */ + rec_t* rec, /* in: record which should be + modified; NOTE: as this is a secondary + index, we always have to modify the + clustered index record first: see the + comment below */ + dict_index_t* index, /* in: secondary index */ + que_thr_t* thr); /* in: query thread */ +/************************************************************************* +Like the counterpart for a clustered index below, but now we read a +secondary index record. */ +UNIV_INTERN +ulint +lock_sec_rec_read_check_and_lock( +/*=============================*/ + /* out: DB_SUCCESS, + DB_LOCK_WAIT, DB_DEADLOCK, or + DB_QUE_THR_SUSPENDED */ + ulint flags, /* in: if BTR_NO_LOCKING_FLAG + bit is set, does nothing */ + const buf_block_t* block, /* in: buffer block of rec */ + const rec_t* rec, /* in: user record or page + supremum record which should + be read or passed over by a + read cursor */ + dict_index_t* index, /* in: secondary index */ + const ulint* offsets,/* in: rec_get_offsets(rec, index) */ + enum lock_mode mode, /* in: mode of the lock which + the read cursor should set on + records: LOCK_S or LOCK_X; the + latter is possible in + SELECT FOR UPDATE */ + ulint gap_mode,/* in: LOCK_ORDINARY, LOCK_GAP, or + LOCK_REC_NOT_GAP */ + que_thr_t* thr); /* in: query thread */ +/************************************************************************* +Checks if locks of other transactions prevent an immediate read, or passing +over by a read cursor, of a clustered index record. If they do, first tests +if the query thread should anyway be suspended for some reason; if not, then +puts the transaction and the query thread to the lock wait state and inserts a +waiting request for a record lock to the lock queue. Sets the requested mode +lock on the record. */ +UNIV_INTERN +ulint +lock_clust_rec_read_check_and_lock( +/*===============================*/ + /* out: DB_SUCCESS, + DB_LOCK_WAIT, DB_DEADLOCK, or + DB_QUE_THR_SUSPENDED */ + ulint flags, /* in: if BTR_NO_LOCKING_FLAG + bit is set, does nothing */ + const buf_block_t* block, /* in: buffer block of rec */ + const rec_t* rec, /* in: user record or page + supremum record which should + be read or passed over by a + read cursor */ + dict_index_t* index, /* in: clustered index */ + const ulint* offsets,/* in: rec_get_offsets(rec, index) */ + enum lock_mode mode, /* in: mode of the lock which + the read cursor should set on + records: LOCK_S or LOCK_X; the + latter is possible in + SELECT FOR UPDATE */ + ulint gap_mode,/* in: LOCK_ORDINARY, LOCK_GAP, or + LOCK_REC_NOT_GAP */ + que_thr_t* thr); /* in: query thread */ +/************************************************************************* +Checks if locks of other transactions prevent an immediate read, or passing +over by a read cursor, of a clustered index record. If they do, first tests +if the query thread should anyway be suspended for some reason; if not, then +puts the transaction and the query thread to the lock wait state and inserts a +waiting request for a record lock to the lock queue. Sets the requested mode +lock on the record. This is an alternative version of +lock_clust_rec_read_check_and_lock() that does not require the parameter +"offsets". */ +UNIV_INTERN +ulint +lock_clust_rec_read_check_and_lock_alt( +/*===================================*/ + /* out: DB_SUCCESS, + DB_LOCK_WAIT, DB_DEADLOCK, or + DB_QUE_THR_SUSPENDED */ + ulint flags, /* in: if BTR_NO_LOCKING_FLAG + bit is set, does nothing */ + const buf_block_t* block, /* in: buffer block of rec */ + const rec_t* rec, /* in: user record or page + supremum record which should + be read or passed over by a + read cursor */ + dict_index_t* index, /* in: clustered index */ + enum lock_mode mode, /* in: mode of the lock which + the read cursor should set on + records: LOCK_S or LOCK_X; the + latter is possible in + SELECT FOR UPDATE */ + ulint gap_mode,/* in: LOCK_ORDINARY, LOCK_GAP, or + LOCK_REC_NOT_GAP */ + que_thr_t* thr); /* in: query thread */ +/************************************************************************* +Checks that a record is seen in a consistent read. */ +UNIV_INTERN +ibool +lock_clust_rec_cons_read_sees( +/*==========================*/ + /* out: TRUE if sees, or FALSE if an earlier + version of the record should be retrieved */ + const rec_t* rec, /* in: user record which should be read or + passed over by a read cursor */ + dict_index_t* index, /* in: clustered index */ + const ulint* offsets,/* in: rec_get_offsets(rec, index) */ + read_view_t* view); /* in: consistent read view */ +/************************************************************************* +Checks that a non-clustered index record is seen in a consistent read. */ +UNIV_INTERN +ulint +lock_sec_rec_cons_read_sees( +/*========================*/ + /* out: TRUE if certainly + sees, or FALSE if an earlier + version of the clustered index + record might be needed: NOTE + that a non-clustered index + page contains so little + information on its + modifications that also in the + case FALSE, the present + version of rec may be the + right, but we must check this + from the clustered index + record */ + const rec_t* rec, /* in: user record which + should be read or passed over + by a read cursor */ + const read_view_t* view); /* in: consistent read view */ +/************************************************************************* +Locks the specified database table in the mode given. If the lock cannot +be granted immediately, the query thread is put to wait. */ +UNIV_INTERN +ulint +lock_table( +/*=======*/ + /* out: DB_SUCCESS, DB_LOCK_WAIT, + DB_DEADLOCK, or DB_QUE_THR_SUSPENDED */ + ulint flags, /* in: if BTR_NO_LOCKING_FLAG bit is set, + does nothing */ + dict_table_t* table, /* in: database table in dictionary cache */ + enum lock_mode mode, /* in: lock mode */ + que_thr_t* thr); /* in: query thread */ +/************************************************************************* +Checks if there are any locks set on the table. */ +UNIV_INTERN +ibool +lock_is_on_table( +/*=============*/ + /* out: TRUE if there are lock(s) */ + dict_table_t* table); /* in: database table in dictionary cache */ +/***************************************************************** +Removes a granted record lock of a transaction from the queue and grants +locks to other transactions waiting in the queue if they now are entitled +to a lock. */ +UNIV_INTERN +void +lock_rec_unlock( +/*============*/ + trx_t* trx, /* in: transaction that has + set a record lock */ + const buf_block_t* block, /* in: buffer block containing rec */ + const rec_t* rec, /* in: record */ + enum lock_mode lock_mode);/* in: LOCK_S or LOCK_X */ +/************************************************************************* +Releases a table lock. +Releases possible other transactions waiting for this lock. */ +UNIV_INTERN +void +lock_table_unlock( +/*==============*/ + lock_t* lock); /* in: lock */ +/************************************************************************* +Releases transaction locks, and releases possible other transactions waiting +because of these locks. */ +UNIV_INTERN +void +lock_release_off_kernel( +/*====================*/ + trx_t* trx); /* in: transaction */ +/************************************************************************* +Cancels a waiting lock request and releases possible other transactions +waiting behind it. */ +UNIV_INTERN +void +lock_cancel_waiting_and_release( +/*============================*/ + lock_t* lock); /* in: waiting lock request */ + +/************************************************************************* +Removes locks on a table to be dropped or truncated. +If remove_also_table_sx_locks is TRUE then table-level S and X locks are +also removed in addition to other table-level and record-level locks. +No lock, that is going to be removed, is allowed to be a wait lock. */ +UNIV_INTERN +void +lock_remove_all_on_table( +/*=====================*/ + dict_table_t* table, /* in: table to be dropped + or truncated */ + ibool remove_also_table_sx_locks);/* in: also removes + table S and X locks */ + +/************************************************************************* +Calculates the fold value of a page file address: used in inserting or +searching for a lock in the hash table. */ +UNIV_INLINE +ulint +lock_rec_fold( +/*==========*/ + /* out: folded value */ + ulint space, /* in: space */ + ulint page_no)/* in: page number */ + __attribute__((const)); +/************************************************************************* +Calculates the hash value of a page file address: used in inserting or +searching for a lock in the hash table. */ +UNIV_INLINE +ulint +lock_rec_hash( +/*==========*/ + /* out: hashed value */ + ulint space, /* in: space */ + ulint page_no);/* in: page number */ + +/************************************************************************** +Looks for a set bit in a record lock bitmap. Returns ULINT_UNDEFINED, +if none found. */ +UNIV_INTERN +ulint +lock_rec_find_set_bit( +/*==================*/ + /* out: bit index == heap number of + the record, or ULINT_UNDEFINED if none found */ + const lock_t* lock); /* in: record lock with at least one bit set */ + +/************************************************************************* +Gets the source table of an ALTER TABLE transaction. The table must be +covered by an IX or IS table lock. */ +UNIV_INTERN +dict_table_t* +lock_get_src_table( +/*===============*/ + /* out: the source table of transaction, + if it is covered by an IX or IS table lock; + dest if there is no source table, and + NULL if the transaction is locking more than + two tables or an inconsistency is found */ + trx_t* trx, /* in: transaction */ + dict_table_t* dest, /* in: destination of ALTER TABLE */ + enum lock_mode* mode); /* out: lock mode of the source table */ +/************************************************************************* +Determine if the given table is exclusively "owned" by the given +transaction, i.e., transaction holds LOCK_IX and possibly LOCK_AUTO_INC +on the table. */ +UNIV_INTERN +ibool +lock_is_table_exclusive( +/*====================*/ + /* out: TRUE if table is only locked by trx, + with LOCK_IX, and possibly LOCK_AUTO_INC */ + dict_table_t* table, /* in: table */ + trx_t* trx); /* in: transaction */ +/************************************************************************* +Checks if a lock request lock1 has to wait for request lock2. */ +UNIV_INTERN +ibool +lock_has_to_wait( +/*=============*/ + /* out: TRUE if lock1 has to wait for + lock2 to be removed */ + const lock_t* lock1, /* in: waiting lock */ + const lock_t* lock2); /* in: another lock; NOTE that it is + assumed that this has a lock bit set + on the same record as in lock1 if the + locks are record locks */ +/************************************************************************* +Checks that a transaction id is sensible, i.e., not in the future. */ +UNIV_INTERN +ibool +lock_check_trx_id_sanity( +/*=====================*/ + /* out: TRUE if ok */ + dulint trx_id, /* in: trx id */ + const rec_t* rec, /* in: user record */ + dict_index_t* index, /* in: clustered index */ + const ulint* offsets, /* in: rec_get_offsets(rec, index) */ + ibool has_kernel_mutex);/* in: TRUE if the caller owns the + kernel mutex */ +/************************************************************************* +Prints info of a table lock. */ +UNIV_INTERN +void +lock_table_print( +/*=============*/ + FILE* file, /* in: file where to print */ + const lock_t* lock); /* in: table type lock */ +/************************************************************************* +Prints info of a record lock. */ +UNIV_INTERN +void +lock_rec_print( +/*===========*/ + FILE* file, /* in: file where to print */ + const lock_t* lock); /* in: record type lock */ +/************************************************************************* +Prints info of locks for all transactions. */ +UNIV_INTERN +void +lock_print_info_summary( +/*====================*/ + FILE* file); /* in: file where to print */ +/************************************************************************* +Prints info of locks for each transaction. */ +UNIV_INTERN +void +lock_print_info_all_transactions( +/*=============================*/ + FILE* file); /* in: file where to print */ +/************************************************************************* +Return approximate number or record locks (bits set in the bitmap) for +this transaction. Since delete-marked records may be removed, the +record count will not be precise. */ +UNIV_INTERN +ulint +lock_number_of_rows_locked( +/*=======================*/ + trx_t* trx); /* in: transaction */ +/*********************************************************************** +Release all the transaction's autoinc locks. */ +UNIV_INTERN +void +lock_release_autoinc_locks( +/*=======================*/ + trx_t* trx); /* in/out: transaction */ + +/*********************************************************************** +Gets the type of a lock. Non-inline version for using outside of the +lock module. */ +UNIV_INTERN +ulint +lock_get_type( +/*==========*/ + /* out: LOCK_TABLE or LOCK_REC */ + const lock_t* lock); /* in: lock */ + +/*********************************************************************** +Gets the id of the transaction owning a lock. */ +UNIV_INTERN +ullint +lock_get_trx_id( +/*============*/ + /* out: transaction id */ + const lock_t* lock); /* in: lock */ + +/*********************************************************************** +Gets the mode of a lock in a human readable string. +The string should not be free()'d or modified. */ + +const char* +lock_get_mode_str( +/*==============*/ + /* out: lock mode */ + const lock_t* lock); /* in: lock */ + +/*********************************************************************** +Gets the type of a lock in a human readable string. +The string should not be free()'d or modified. */ + +const char* +lock_get_type_str( +/*==============*/ + /* out: lock type */ + const lock_t* lock); /* in: lock */ + +/*********************************************************************** +Gets the id of the table on which the lock is. */ +UNIV_INTERN +ullint +lock_get_table_id( +/*==============*/ + /* out: id of the table */ + const lock_t* lock); /* in: lock */ + +/*********************************************************************** +Gets the name of the table on which the lock is. +The string should not be free()'d or modified. */ + +const char* +lock_get_table_name( +/*================*/ + /* out: name of the table */ + const lock_t* lock); /* in: lock */ + +/*********************************************************************** +For a record lock, gets the index on which the lock is. */ + +const dict_index_t* +lock_rec_get_index( +/*===============*/ + /* out: index */ + const lock_t* lock); /* in: lock */ + +/*********************************************************************** +For a record lock, gets the name of the index on which the lock is. +The string should not be free()'d or modified. */ + +const char* +lock_rec_get_index_name( +/*====================*/ + /* out: name of the index */ + const lock_t* lock); /* in: lock */ + +/*********************************************************************** +For a record lock, gets the tablespace number on which the lock is. */ +UNIV_INTERN +ulint +lock_rec_get_space_id( +/*==================*/ + /* out: tablespace number */ + const lock_t* lock); /* in: lock */ + +/*********************************************************************** +For a record lock, gets the page number on which the lock is. */ +UNIV_INTERN +ulint +lock_rec_get_page_no( +/*=================*/ + /* out: page number */ + const lock_t* lock); /* in: lock */ + +/* Lock modes and types */ +#define LOCK_MODE_MASK 0xFUL /* mask used to extract mode from the + type_mode field in a lock */ +/* Lock types */ +#define LOCK_TABLE 16 /* these type values should be so high that */ +#define LOCK_REC 32 /* they can be ORed to the lock mode */ +#define LOCK_TYPE_MASK 0xF0UL /* mask used to extract lock type from the + type_mode field in a lock */ +/* Waiting lock flag */ +#define LOCK_WAIT 256 /* this wait bit should be so high that + it can be ORed to the lock mode and type; + when this bit is set, it means that the + lock has not yet been granted, it is just + waiting for its turn in the wait queue */ +/* Precise modes */ +#define LOCK_ORDINARY 0 /* this flag denotes an ordinary next-key lock + in contrast to LOCK_GAP or LOCK_REC_NOT_GAP */ +#define LOCK_GAP 512 /* this gap bit should be so high that + it can be ORed to the other flags; + when this bit is set, it means that the + lock holds only on the gap before the record; + for instance, an x-lock on the gap does not + give permission to modify the record on which + the bit is set; locks of this type are created + when records are removed from the index chain + of records */ +#define LOCK_REC_NOT_GAP 1024 /* this bit means that the lock is only on + the index record and does NOT block inserts + to the gap before the index record; this is + used in the case when we retrieve a record + with a unique key, and is also used in + locking plain SELECTs (not part of UPDATE + or DELETE) when the user has set the READ + COMMITTED isolation level */ +#define LOCK_INSERT_INTENTION 2048 /* this bit is set when we place a waiting + gap type record lock request in order to let + an insert of an index record to wait until + there are no conflicting locks by other + transactions on the gap; note that this flag + remains set when the waiting lock is granted, + or if the lock is inherited to a neighboring + record */ + +/* When lock bits are reset, the following flags are available: */ +#define LOCK_RELEASE_WAIT 1 +#define LOCK_NOT_RELEASE_WAIT 2 + +/* Lock operation struct */ +typedef struct lock_op_struct lock_op_t; +struct lock_op_struct{ + dict_table_t* table; /* table to be locked */ + enum lock_mode mode; /* lock mode */ +}; + +#define LOCK_OP_START 1 +#define LOCK_OP_COMPLETE 2 + +/* The lock system struct */ +struct lock_sys_struct{ + hash_table_t* rec_hash; /* hash table of the record locks */ +}; + +/* The lock system */ +extern lock_sys_t* lock_sys; + + +#ifndef UNIV_NONINL +#include "lock0lock.ic" +#endif + +#endif === added file 'storage/xtradb/include/lock0lock.ic' --- a/storage/xtradb/include/lock0lock.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/lock0lock.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,123 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +The transaction lock system + +Created 5/7/1996 Heikki Tuuri +*******************************************************/ + +#include "sync0sync.h" +#include "srv0srv.h" +#include "dict0dict.h" +#include "row0row.h" +#include "trx0sys.h" +#include "trx0trx.h" +#include "buf0buf.h" +#include "page0page.h" +#include "page0cur.h" +#include "row0vers.h" +#include "que0que.h" +#include "btr0cur.h" +#include "read0read.h" +#include "log0recv.h" + +/************************************************************************* +Calculates the fold value of a page file address: used in inserting or +searching for a lock in the hash table. */ +UNIV_INLINE +ulint +lock_rec_fold( +/*==========*/ + /* out: folded value */ + ulint space, /* in: space */ + ulint page_no)/* in: page number */ +{ + return(ut_fold_ulint_pair(space, page_no)); +} + +/************************************************************************* +Calculates the hash value of a page file address: used in inserting or +searching for a lock in the hash table. */ +UNIV_INLINE +ulint +lock_rec_hash( +/*==========*/ + /* out: hashed value */ + ulint space, /* in: space */ + ulint page_no)/* in: page number */ +{ + return(hash_calc_hash(lock_rec_fold(space, page_no), + lock_sys->rec_hash)); +} + +/************************************************************************* +Checks if some transaction has an implicit x-lock on a record in a clustered +index. */ +UNIV_INLINE +trx_t* +lock_clust_rec_some_has_impl( +/*=========================*/ + /* out: transaction which has the x-lock, or + NULL */ + const rec_t* rec, /* in: user record */ + dict_index_t* index, /* in: clustered index */ + const ulint* offsets)/* in: rec_get_offsets(rec, index) */ +{ + dulint trx_id; + + ut_ad(mutex_own(&kernel_mutex)); + ut_ad(dict_index_is_clust(index)); + ut_ad(page_rec_is_user_rec(rec)); + + trx_id = row_get_rec_trx_id(rec, index, offsets); + + if (trx_is_active(trx_id)) { + /* The modifying or inserting transaction is active */ + + return(trx_get_on_id(trx_id)); + } + + return(NULL); +} + +/************************************************************************* +Gets the heap_no of the smallest user record on a page. */ +UNIV_INLINE +ulint +lock_get_min_heap_no( +/*=================*/ + /* out: heap_no of smallest + user record, or + PAGE_HEAP_NO_SUPREMUM */ + const buf_block_t* block) /* in: buffer block */ +{ + const page_t* page = block->frame; + + if (page_is_comp(page)) { + return(rec_get_heap_no_new( + page + + rec_get_next_offs(page + PAGE_NEW_INFIMUM, + TRUE))); + } else { + return(rec_get_heap_no_old( + page + + rec_get_next_offs(page + PAGE_OLD_INFIMUM, + FALSE))); + } +} === added file 'storage/xtradb/include/lock0priv.h' --- a/storage/xtradb/include/lock0priv.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/lock0priv.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,106 @@ +/***************************************************************************** + +Copyright (c) 2007, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Lock module internal structures and methods. + +Created July 12, 2007 Vasil Dimov +*******************************************************/ + +#ifndef lock0priv_h +#define lock0priv_h + +#ifndef LOCK_MODULE_IMPLEMENTATION +/* If you need to access members of the structures defined in this +file, please write appropriate functions that retrieve them and put +those functions in lock/ */ +#error Do not include lock0priv.h outside of the lock/ module +#endif + +#include "univ.i" +#include "dict0types.h" +#include "hash0hash.h" +#include "trx0types.h" +#include "ut0lst.h" + +/* A table lock */ +typedef struct lock_table_struct lock_table_t; +struct lock_table_struct { + dict_table_t* table; /* database table in dictionary + cache */ + UT_LIST_NODE_T(lock_t) + locks; /* list of locks on the same + table */ +}; + +/* Record lock for a page */ +typedef struct lock_rec_struct lock_rec_t; +struct lock_rec_struct { + ulint space; /* space id */ + ulint page_no; /* page number */ + ulint n_bits; /* number of bits in the lock + bitmap; NOTE: the lock bitmap is + placed immediately after the + lock struct */ +}; + +/* Lock struct */ +struct lock_struct { + trx_t* trx; /* transaction owning the + lock */ + UT_LIST_NODE_T(lock_t) + trx_locks; /* list of the locks of the + transaction */ + ulint type_mode; /* lock type, mode, LOCK_GAP or + LOCK_REC_NOT_GAP, + LOCK_INSERT_INTENTION, + wait flag, ORed */ + hash_node_t hash; /* hash chain node for a record + lock */ + dict_index_t* index; /* index for a record lock */ + union { + lock_table_t tab_lock;/* table lock */ + lock_rec_t rec_lock;/* record lock */ + } un_member; +}; + +/************************************************************************* +Gets the type of a lock. */ +UNIV_INLINE +ulint +lock_get_type_low( +/*==============*/ + /* out: LOCK_TABLE or LOCK_REC */ + const lock_t* lock); /* in: lock */ + +/************************************************************************* +Gets the previous record lock set on a record. */ + +const lock_t* +lock_rec_get_prev( +/*==============*/ + /* out: previous lock on the same + record, NULL if none exists */ + const lock_t* in_lock,/* in: record lock */ + ulint heap_no);/* in: heap number of the record */ + +#ifndef UNIV_NONINL +#include "lock0priv.ic" +#endif + +#endif /* lock0priv_h */ === added file 'storage/xtradb/include/lock0priv.ic' --- a/storage/xtradb/include/lock0priv.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/lock0priv.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,48 @@ +/***************************************************************************** + +Copyright (c) 2007, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Lock module internal inline methods. + +Created July 16, 2007 Vasil Dimov +*******************************************************/ + +/* This file contains only methods which are used in +lock/lock0* files, other than lock/lock0lock.c. +I.e. lock/lock0lock.c contains more internal inline +methods but they are used only in that file. */ + +#ifndef LOCK_MODULE_IMPLEMENTATION +#error Do not include lock0priv.ic outside of the lock/ module +#endif + +/************************************************************************* +Gets the type of a lock. */ +UNIV_INLINE +ulint +lock_get_type_low( +/*==============*/ + /* out: LOCK_TABLE or LOCK_REC */ + const lock_t* lock) /* in: lock */ +{ + ut_ad(lock); + + return(lock->type_mode & LOCK_TYPE_MASK); +} + +/* vim: set filetype=c: */ === added file 'storage/xtradb/include/lock0types.h' --- a/storage/xtradb/include/lock0types.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/lock0types.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,44 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +The transaction lock system global types + +Created 5/7/1996 Heikki Tuuri +*******************************************************/ + +#ifndef lock0types_h +#define lock0types_h + +#define lock_t ib_lock_t +typedef struct lock_struct lock_t; +typedef struct lock_sys_struct lock_sys_t; + +/* Basic lock modes */ +enum lock_mode { + LOCK_IS = 0, /* intention shared */ + LOCK_IX, /* intention exclusive */ + LOCK_S, /* shared */ + LOCK_X, /* exclusive */ + LOCK_AUTO_INC, /* locks the auto-inc counter of a table + in an exclusive mode */ + LOCK_NONE, /* this is used elsewhere to note consistent read */ + LOCK_NUM = LOCK_NONE/* number of lock modes */ +}; + +#endif === added file 'storage/xtradb/include/log0log.h' --- a/storage/xtradb/include/log0log.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/log0log.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,893 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Database log + +Created 12/9/1995 Heikki Tuuri +*******************************************************/ + +#ifndef log0log_h +#define log0log_h + +#include "univ.i" +#include "ut0byte.h" +#include "sync0sync.h" +#include "sync0rw.h" + +typedef struct log_struct log_t; +typedef struct log_group_struct log_group_t; + +#ifdef UNIV_DEBUG +extern ibool log_do_write; +extern ibool log_debug_writes; +#else /* UNIV_DEBUG */ +# define log_do_write TRUE +#endif /* UNIV_DEBUG */ + +/* Wait modes for log_write_up_to */ +#define LOG_NO_WAIT 91 +#define LOG_WAIT_ONE_GROUP 92 +#define LOG_WAIT_ALL_GROUPS 93 +#define LOG_MAX_N_GROUPS 32 + +/******************************************************************** +Sets the global variable log_fsp_current_free_limit. Also makes a checkpoint, +so that we know that the limit has been written to a log checkpoint field +on disk. */ +UNIV_INTERN +void +log_fsp_current_free_limit_set_and_checkpoint( +/*==========================================*/ + ulint limit); /* in: limit to set */ +/*********************************************************************** +Calculates where in log files we find a specified lsn. */ +UNIV_INTERN +ulint +log_calc_where_lsn_is( +/*==================*/ + /* out: log file number */ + ib_int64_t* log_file_offset, /* out: offset in that file + (including the header) */ + ib_uint64_t first_header_lsn, /* in: first log file start + lsn */ + ib_uint64_t lsn, /* in: lsn whose position to + determine */ + ulint n_log_files, /* in: total number of log + files */ + ib_int64_t log_file_size); /* in: log file size + (including the header) */ +/**************************************************************** +Writes to the log the string given. The log must be released with +log_release. */ +UNIV_INLINE +ib_uint64_t +log_reserve_and_write_fast( +/*=======================*/ + /* out: end lsn of the log record, + zero if did not succeed */ + byte* str, /* in: string */ + ulint len, /* in: string length */ + ib_uint64_t* start_lsn,/* out: start lsn of the log record */ + ibool* success);/* out: TRUE if success */ +/*************************************************************************** +Releases the log mutex. */ +UNIV_INLINE +void +log_release(void); +/*=============*/ +/*************************************************************************** +Checks if there is need for a log buffer flush or a new checkpoint, and does +this if yes. Any database operation should call this when it has modified +more than about 4 pages. NOTE that this function may only be called when the +OS thread owns no synchronization objects except the dictionary mutex. */ +UNIV_INLINE +void +log_free_check(void); +/*================*/ +/**************************************************************** +Opens the log for log_write_low. The log must be closed with log_close and +released with log_release. */ +UNIV_INTERN +ib_uint64_t +log_reserve_and_open( +/*=================*/ + /* out: start lsn of the log record */ + ulint len); /* in: length of data to be catenated */ +/**************************************************************** +Writes to the log the string given. It is assumed that the caller holds the +log mutex. */ +UNIV_INTERN +void +log_write_low( +/*==========*/ + byte* str, /* in: string */ + ulint str_len); /* in: string length */ +/**************************************************************** +Closes the log. */ +UNIV_INTERN +ib_uint64_t +log_close(void); +/*===========*/ + /* out: lsn */ +/**************************************************************** +Gets the current lsn. */ +UNIV_INLINE +ib_uint64_t +log_get_lsn(void); +/*=============*/ + /* out: current lsn */ +/********************************************************** +Initializes the log. */ +UNIV_INTERN +void +log_init(void); +/*==========*/ +/********************************************************************** +Inits a log group to the log system. */ +UNIV_INTERN +void +log_group_init( +/*===========*/ + ulint id, /* in: group id */ + ulint n_files, /* in: number of log files */ + ulint file_size, /* in: log file size in bytes */ + ulint space_id, /* in: space id of the file space + which contains the log files of this + group */ + ulint archive_space_id); /* in: space id of the file space + which contains some archived log + files for this group; currently, only + for the first log group this is + used */ +/********************************************************** +Completes an i/o to a log file. */ +UNIV_INTERN +void +log_io_complete( +/*============*/ + log_group_t* group); /* in: log group */ +/********************************************************** +This function is called, e.g., when a transaction wants to commit. It checks +that the log has been written to the log file up to the last log entry written +by the transaction. If there is a flush running, it waits and checks if the +flush flushed enough. If not, starts a new flush. */ +UNIV_INTERN +void +log_write_up_to( +/*============*/ + ib_uint64_t lsn, /* in: log sequence number up to which + the log should be written, + IB_ULONGLONG_MAX if not specified */ + ulint wait, /* in: LOG_NO_WAIT, LOG_WAIT_ONE_GROUP, + or LOG_WAIT_ALL_GROUPS */ + ibool flush_to_disk); + /* in: TRUE if we want the written log + also to be flushed to disk */ +/******************************************************************** +Does a syncronous flush of the log buffer to disk. */ +UNIV_INTERN +void +log_buffer_flush_to_disk(void); +/*==========================*/ +/******************************************************************** +Advances the smallest lsn for which there are unflushed dirty blocks in the +buffer pool and also may make a new checkpoint. NOTE: this function may only +be called if the calling thread owns no synchronization objects! */ +UNIV_INTERN +ibool +log_preflush_pool_modified_pages( +/*=============================*/ + /* out: FALSE if there was a + flush batch of the same type + running, which means that we + could not start this flush + batch */ + ib_uint64_t new_oldest, /* in: try to advance + oldest_modified_lsn at least + to this lsn */ + ibool sync); /* in: TRUE if synchronous + operation is desired */ +/********************************************************** +Makes a checkpoint. Note that this function does not flush dirty +blocks from the buffer pool: it only checks what is lsn of the oldest +modification in the pool, and writes information about the lsn in +log files. Use log_make_checkpoint_at to flush also the pool. */ +UNIV_INTERN +ibool +log_checkpoint( +/*===========*/ + /* out: TRUE if success, FALSE if a checkpoint + write was already running */ + ibool sync, /* in: TRUE if synchronous operation is + desired */ + ibool write_always); /* in: the function normally checks if the + the new checkpoint would have a greater + lsn than the previous one: if not, then no + physical write is done; by setting this + parameter TRUE, a physical write will always be + made to log files */ +/******************************************************************** +Makes a checkpoint at a given lsn or later. */ +UNIV_INTERN +void +log_make_checkpoint_at( +/*===================*/ + ib_uint64_t lsn, /* in: make a checkpoint at this or a + later lsn, if IB_ULONGLONG_MAX, makes + a checkpoint at the latest lsn */ + ibool write_always); /* in: the function normally checks if + the the new checkpoint would have a + greater lsn than the previous one: if + not, then no physical write is done; + by setting this parameter TRUE, a + physical write will always be made to + log files */ +/******************************************************************** +Makes a checkpoint at the latest lsn and writes it to first page of each +data file in the database, so that we know that the file spaces contain +all modifications up to that lsn. This can only be called at database +shutdown. This function also writes all log in log files to the log archive. */ +UNIV_INTERN +void +logs_empty_and_mark_files_at_shutdown(void); +/*=======================================*/ +/********************************************************** +Reads a checkpoint info from a log group header to log_sys->checkpoint_buf. */ +UNIV_INTERN +void +log_group_read_checkpoint_info( +/*===========================*/ + log_group_t* group, /* in: log group */ + ulint field); /* in: LOG_CHECKPOINT_1 or LOG_CHECKPOINT_2 */ +/*********************************************************************** +Gets info from a checkpoint about a log group. */ +UNIV_INTERN +void +log_checkpoint_get_nth_group_info( +/*==============================*/ + byte* buf, /* in: buffer containing checkpoint info */ + ulint n, /* in: nth slot */ + ulint* file_no,/* out: archived file number */ + ulint* offset);/* out: archived file offset */ +/********************************************************** +Writes checkpoint info to groups. */ +UNIV_INTERN +void +log_groups_write_checkpoint_info(void); +/*==================================*/ +#ifdef UNIV_HOTBACKUP +/********************************************************** +Writes info to a buffer of a log group when log files are created in +backup restoration. */ +UNIV_INTERN +void +log_reset_first_header_and_checkpoint( +/*==================================*/ + byte* hdr_buf,/* in: buffer which will be written to the + start of the first log file */ + ib_uint64_t start); /* in: lsn of the start of the first log file; + we pretend that there is a checkpoint at + start + LOG_BLOCK_HDR_SIZE */ +#endif /* UNIV_HOTBACKUP */ +/************************************************************************ +Starts an archiving operation. */ +UNIV_INTERN +ibool +log_archive_do( +/*===========*/ + /* out: TRUE if succeed, FALSE if an archiving + operation was already running */ + ibool sync, /* in: TRUE if synchronous operation is desired */ + ulint* n_bytes);/* out: archive log buffer size, 0 if nothing to + archive */ +/******************************************************************** +Writes the log contents to the archive up to the lsn when this function was +called, and stops the archiving. When archiving is started again, the archived +log file numbers start from a number one higher, so that the archiving will +not write again to the archived log files which exist when this function +returns. */ +UNIV_INTERN +ulint +log_archive_stop(void); +/*==================*/ + /* out: DB_SUCCESS or DB_ERROR */ +/******************************************************************** +Starts again archiving which has been stopped. */ +UNIV_INTERN +ulint +log_archive_start(void); +/*===================*/ + /* out: DB_SUCCESS or DB_ERROR */ +/******************************************************************** +Stop archiving the log so that a gap may occur in the archived log files. */ +UNIV_INTERN +ulint +log_archive_noarchivelog(void); +/*==========================*/ + /* out: DB_SUCCESS or DB_ERROR */ +/******************************************************************** +Start archiving the log so that a gap may occur in the archived log files. */ +UNIV_INTERN +ulint +log_archive_archivelog(void); +/*========================*/ + /* out: DB_SUCCESS or DB_ERROR */ +/********************************************************** +Generates an archived log file name. */ +UNIV_INTERN +void +log_archived_file_name_gen( +/*=======================*/ + char* buf, /* in: buffer where to write */ + ulint id, /* in: group id */ + ulint file_no);/* in: file number */ +/************************************************************************ +Checks that there is enough free space in the log to start a new query step. +Flushes the log buffer or makes a new checkpoint if necessary. NOTE: this +function may only be called if the calling thread owns no synchronization +objects! */ +UNIV_INTERN +void +log_check_margins(void); +/*===================*/ +/********************************************************** +Reads a specified log segment to a buffer. */ +UNIV_INTERN +void +log_group_read_log_seg( +/*===================*/ + ulint type, /* in: LOG_ARCHIVE or LOG_RECOVER */ + byte* buf, /* in: buffer where to read */ + log_group_t* group, /* in: log group */ + ib_uint64_t start_lsn, /* in: read area start */ + ib_uint64_t end_lsn); /* in: read area end */ +/********************************************************** +Writes a buffer to a log file group. */ +UNIV_INTERN +void +log_group_write_buf( +/*================*/ + log_group_t* group, /* in: log group */ + byte* buf, /* in: buffer */ + ulint len, /* in: buffer len; must be divisible + by OS_FILE_LOG_BLOCK_SIZE */ + ib_uint64_t start_lsn, /* in: start lsn of the buffer; must + be divisible by + OS_FILE_LOG_BLOCK_SIZE */ + ulint new_data_offset);/* in: start offset of new data in + buf: this parameter is used to decide + if we have to write a new log file + header */ +/************************************************************ +Sets the field values in group to correspond to a given lsn. For this function +to work, the values must already be correctly initialized to correspond to +some lsn, for instance, a checkpoint lsn. */ +UNIV_INTERN +void +log_group_set_fields( +/*=================*/ + log_group_t* group, /* in: group */ + ib_uint64_t lsn); /* in: lsn for which the values should be + set */ +/********************************************************** +Calculates the data capacity of a log group, when the log file headers are not +included. */ +UNIV_INTERN +ulint +log_group_get_capacity( +/*===================*/ + /* out: capacity in bytes */ + log_group_t* group); /* in: log group */ +/**************************************************************** +Gets a log block flush bit. */ +UNIV_INLINE +ibool +log_block_get_flush_bit( +/*====================*/ + /* out: TRUE if this block was the first + to be written in a log flush */ + byte* log_block); /* in: log block */ +/**************************************************************** +Gets a log block number stored in the header. */ +UNIV_INLINE +ulint +log_block_get_hdr_no( +/*=================*/ + /* out: log block number stored in the block + header */ + byte* log_block); /* in: log block */ +/**************************************************************** +Gets a log block data length. */ +UNIV_INLINE +ulint +log_block_get_data_len( +/*===================*/ + /* out: log block data length measured as a + byte offset from the block start */ + byte* log_block); /* in: log block */ +/**************************************************************** +Sets the log block data length. */ +UNIV_INLINE +void +log_block_set_data_len( +/*===================*/ + byte* log_block, /* in: log block */ + ulint len); /* in: data length */ +/**************************************************************** +Calculates the checksum for a log block. */ +UNIV_INLINE +ulint +log_block_calc_checksum( +/*====================*/ + /* out: checksum */ + const byte* block); /* in: log block */ +/**************************************************************** +Gets a log block checksum field value. */ +UNIV_INLINE +ulint +log_block_get_checksum( +/*===================*/ + /* out: checksum */ + const byte* log_block); /* in: log block */ +/**************************************************************** +Sets a log block checksum field value. */ +UNIV_INLINE +void +log_block_set_checksum( +/*===================*/ + byte* log_block, /* in: log block */ + ulint checksum); /* in: checksum */ +/**************************************************************** +Gets a log block first mtr log record group offset. */ +UNIV_INLINE +ulint +log_block_get_first_rec_group( +/*==========================*/ + /* out: first mtr log record group byte offset + from the block start, 0 if none */ + byte* log_block); /* in: log block */ +/**************************************************************** +Sets the log block first mtr log record group offset. */ +UNIV_INLINE +void +log_block_set_first_rec_group( +/*==========================*/ + byte* log_block, /* in: log block */ + ulint offset); /* in: offset, 0 if none */ +/**************************************************************** +Gets a log block checkpoint number field (4 lowest bytes). */ +UNIV_INLINE +ulint +log_block_get_checkpoint_no( +/*========================*/ + /* out: checkpoint no (4 lowest bytes) */ + byte* log_block); /* in: log block */ +/**************************************************************** +Initializes a log block in the log buffer. */ +UNIV_INLINE +void +log_block_init( +/*===========*/ + byte* log_block, /* in: pointer to the log buffer */ + ib_uint64_t lsn); /* in: lsn within the log block */ +/**************************************************************** +Initializes a log block in the log buffer in the old, < 3.23.52 format, where +there was no checksum yet. */ +UNIV_INLINE +void +log_block_init_in_old_format( +/*=========================*/ + byte* log_block, /* in: pointer to the log buffer */ + ib_uint64_t lsn); /* in: lsn within the log block */ +/**************************************************************** +Converts a lsn to a log block number. */ +UNIV_INLINE +ulint +log_block_convert_lsn_to_no( +/*========================*/ + /* out: log block number, + it is > 0 and <= 1G */ + ib_uint64_t lsn); /* in: lsn of a byte within the block */ +/********************************************************** +Prints info of the log. */ +UNIV_INTERN +void +log_print( +/*======*/ + FILE* file); /* in: file where to print */ +/********************************************************** +Peeks the current lsn. */ +UNIV_INTERN +ibool +log_peek_lsn( +/*=========*/ + /* out: TRUE if success, FALSE if + could not get the log system mutex */ + ib_uint64_t* lsn); /* out: if returns TRUE, current lsn is here */ +/************************************************************************** +Refreshes the statistics used to print per-second averages. */ +UNIV_INTERN +void +log_refresh_stats(void); +/*===================*/ + +extern log_t* log_sys; + +/* Values used as flags */ +#define LOG_FLUSH 7652559 +#define LOG_CHECKPOINT 78656949 +#ifdef UNIV_LOG_ARCHIVE +# define LOG_ARCHIVE 11122331 +#endif /* UNIV_LOG_ARCHIVE */ +#define LOG_RECOVER 98887331 + +/* The counting of lsn's starts from this value: this must be non-zero */ +#define LOG_START_LSN ((ib_uint64_t) (16 * OS_FILE_LOG_BLOCK_SIZE)) + +#define LOG_BUFFER_SIZE (srv_log_buffer_size * UNIV_PAGE_SIZE) +#define LOG_ARCHIVE_BUF_SIZE (srv_log_buffer_size * UNIV_PAGE_SIZE / 4) + +/* Offsets of a log block header */ +#define LOG_BLOCK_HDR_NO 0 /* block number which must be > 0 and + is allowed to wrap around at 2G; the + highest bit is set to 1 if this is the + first log block in a log flush write + segment */ +#define LOG_BLOCK_FLUSH_BIT_MASK 0x80000000UL + /* mask used to get the highest bit in + the preceding field */ +#define LOG_BLOCK_HDR_DATA_LEN 4 /* number of bytes of log written to + this block */ +#define LOG_BLOCK_FIRST_REC_GROUP 6 /* offset of the first start of an + mtr log record group in this log block, + 0 if none; if the value is the same + as LOG_BLOCK_HDR_DATA_LEN, it means + that the first rec group has not yet + been catenated to this log block, but + if it will, it will start at this + offset; an archive recovery can + start parsing the log records starting + from this offset in this log block, + if value not 0 */ +#define LOG_BLOCK_CHECKPOINT_NO 8 /* 4 lower bytes of the value of + log_sys->next_checkpoint_no when the + log block was last written to: if the + block has not yet been written full, + this value is only updated before a + log buffer flush */ +#define LOG_BLOCK_HDR_SIZE 12 /* size of the log block header in + bytes */ + +/* Offsets of a log block trailer from the end of the block */ +#define LOG_BLOCK_CHECKSUM 4 /* 4 byte checksum of the log block + contents; in InnoDB versions + < 3.23.52 this did not contain the + checksum but the same value as + .._HDR_NO */ +#define LOG_BLOCK_TRL_SIZE 4 /* trailer size in bytes */ + +/* Offsets for a checkpoint field */ +#define LOG_CHECKPOINT_NO 0 +#define LOG_CHECKPOINT_LSN 8 +#define LOG_CHECKPOINT_OFFSET 16 +#define LOG_CHECKPOINT_LOG_BUF_SIZE 20 +#define LOG_CHECKPOINT_ARCHIVED_LSN 24 +#define LOG_CHECKPOINT_GROUP_ARRAY 32 + +/* For each value < LOG_MAX_N_GROUPS the following 8 bytes: */ + +#define LOG_CHECKPOINT_ARCHIVED_FILE_NO 0 +#define LOG_CHECKPOINT_ARCHIVED_OFFSET 4 + +#define LOG_CHECKPOINT_ARRAY_END (LOG_CHECKPOINT_GROUP_ARRAY\ + + LOG_MAX_N_GROUPS * 8) +#define LOG_CHECKPOINT_CHECKSUM_1 LOG_CHECKPOINT_ARRAY_END +#define LOG_CHECKPOINT_CHECKSUM_2 (4 + LOG_CHECKPOINT_ARRAY_END) +#define LOG_CHECKPOINT_FSP_FREE_LIMIT (8 + LOG_CHECKPOINT_ARRAY_END) + /* current fsp free limit in + tablespace 0, in units of one + megabyte; this information is only used + by ibbackup to decide if it can + truncate unused ends of + non-auto-extending data files in space + 0 */ +#define LOG_CHECKPOINT_FSP_MAGIC_N (12 + LOG_CHECKPOINT_ARRAY_END) + /* this magic number tells if the + checkpoint contains the above field: + the field was added to + InnoDB-3.23.50 */ +#define LOG_CHECKPOINT_SIZE (16 + LOG_CHECKPOINT_ARRAY_END) + +#define LOG_CHECKPOINT_FSP_MAGIC_N_VAL 1441231243 + +/* Offsets of a log file header */ +#define LOG_GROUP_ID 0 /* log group number */ +#define LOG_FILE_START_LSN 4 /* lsn of the start of data in this + log file */ +#define LOG_FILE_NO 12 /* 4-byte archived log file number; + this field is only defined in an + archived log file */ +#define LOG_FILE_WAS_CREATED_BY_HOT_BACKUP 16 + /* a 32-byte field which contains + the string 'ibbackup' and the + creation time if the log file was + created by ibbackup --restore; + when mysqld is first time started + on the restored database, it can + print helpful info for the user */ +#define LOG_FILE_ARCH_COMPLETED OS_FILE_LOG_BLOCK_SIZE + /* this 4-byte field is TRUE when + the writing of an archived log file + has been completed; this field is + only defined in an archived log file */ +#define LOG_FILE_END_LSN (OS_FILE_LOG_BLOCK_SIZE + 4) + /* lsn where the archived log file + at least extends: actually the + archived log file may extend to a + later lsn, as long as it is within the + same log block as this lsn; this field + is defined only when an archived log + file has been completely written */ +#define LOG_CHECKPOINT_1 OS_FILE_LOG_BLOCK_SIZE + /* first checkpoint field in the log + header; we write alternately to the + checkpoint fields when we make new + checkpoints; this field is only defined + in the first log file of a log group */ +#define LOG_CHECKPOINT_2 (3 * OS_FILE_LOG_BLOCK_SIZE) + /* second checkpoint field in the log + header */ +#define LOG_FILE_HDR_SIZE (4 * OS_FILE_LOG_BLOCK_SIZE) + +#define LOG_GROUP_OK 301 +#define LOG_GROUP_CORRUPTED 302 + +/* Log group consists of a number of log files, each of the same size; a log +group is implemented as a space in the sense of the module fil0fil. */ + +struct log_group_struct{ + /* The following fields are protected by log_sys->mutex */ + ulint id; /* log group id */ + ulint n_files; /* number of files in the group */ + ulint file_size; /* individual log file size in bytes, + including the log file header */ + ulint space_id; /* file space which implements the log + group */ + ulint state; /* LOG_GROUP_OK or + LOG_GROUP_CORRUPTED */ + ib_uint64_t lsn; /* lsn used to fix coordinates within + the log group */ + ulint lsn_offset; /* the offset of the above lsn */ + ulint n_pending_writes;/* number of currently pending flush + writes for this log group */ + byte** file_header_bufs;/* buffers for each file header in the + group */ + /*-----------------------------*/ + byte** archive_file_header_bufs;/* buffers for each file + header in the group */ + ulint archive_space_id;/* file space which implements the log + group archive */ + ulint archived_file_no;/* file number corresponding to + log_sys->archived_lsn */ + ulint archived_offset;/* file offset corresponding to + log_sys->archived_lsn, 0 if we have + not yet written to the archive file + number archived_file_no */ + ulint next_archived_file_no;/* during an archive write, + until the write is completed, we + store the next value for + archived_file_no here: the write + completion function then sets the new + value to ..._file_no */ + ulint next_archived_offset; /* like the preceding field */ + /*-----------------------------*/ + ib_uint64_t scanned_lsn; /* used only in recovery: recovery scan + succeeded up to this lsn in this log + group */ + byte* checkpoint_buf; /* checkpoint header is written from + this buffer to the group */ + UT_LIST_NODE_T(log_group_t) + log_groups; /* list of log groups */ +}; + +struct log_struct{ + byte pad[64]; /* padding to prevent other memory + update hotspots from residing on the + same memory cache line */ + ib_uint64_t lsn; /* log sequence number */ + ulint buf_free; /* first free offset within the log + buffer */ + mutex_t mutex; /* mutex protecting the log */ + byte* buf; /* log buffer */ + ulint buf_size; /* log buffer size in bytes */ + ulint max_buf_free; /* recommended maximum value of + buf_free, after which the buffer is + flushed */ + ulint old_buf_free; /* value of buf free when log was + last time opened; only in the debug + version */ + ib_uint64_t old_lsn; /* value of lsn when log was last time + opened; only in the debug version */ + ibool check_flush_or_checkpoint; + /* this is set to TRUE when there may + be need to flush the log buffer, or + preflush buffer pool pages, or make + a checkpoint; this MUST be TRUE when + lsn - last_checkpoint_lsn > + max_checkpoint_age; this flag is + peeked at by log_free_check(), which + does not reserve the log mutex */ + UT_LIST_BASE_NODE_T(log_group_t) + log_groups; /* log groups */ + + /* The fields involved in the log buffer flush */ + + ulint buf_next_to_write;/* first offset in the log buffer + where the byte content may not exist + written to file, e.g., the start + offset of a log record catenated + later; this is advanced when a flush + operation is completed to all the log + groups */ + ib_uint64_t written_to_some_lsn; + /* first log sequence number not yet + written to any log group; for this to + be advanced, it is enough that the + write i/o has been completed for any + one log group */ + ib_uint64_t written_to_all_lsn; + /* first log sequence number not yet + written to some log group; for this to + be advanced, it is enough that the + write i/o has been completed for all + log groups */ + ib_uint64_t write_lsn; /* end lsn for the current running + write */ + ulint write_end_offset;/* the data in buffer has been written + up to this offset when the current + write ends: this field will then + be copied to buf_next_to_write */ + ib_uint64_t current_flush_lsn;/* end lsn for the current running + write + flush operation */ + ib_uint64_t flushed_to_disk_lsn; + /* how far we have written the log + AND flushed to disk */ + ulint n_pending_writes;/* number of currently pending flushes + or writes */ + /* NOTE on the 'flush' in names of the fields below: starting from + 4.0.14, we separate the write of the log file and the actual fsync() + or other method to flush it to disk. The names below shhould really + be 'flush_or_write'! */ + os_event_t no_flush_event; /* this event is in the reset state + when a flush or a write is running; + a thread should wait for this without + owning the log mutex, but NOTE that + to set or reset this event, the + thread MUST own the log mutex! */ + ibool one_flushed; /* during a flush, this is first FALSE + and becomes TRUE when one log group + has been written or flushed */ + os_event_t one_flushed_event;/* this event is reset when the + flush or write has not yet completed + for any log group; e.g., this means + that a transaction has been committed + when this is set; a thread should wait + for this without owning the log mutex, + but NOTE that to set or reset this + event, the thread MUST own the log + mutex! */ + ulint n_log_ios; /* number of log i/os initiated thus + far */ + ulint n_log_ios_old; /* number of log i/o's at the + previous printout */ + time_t last_printout_time;/* when log_print was last time + called */ + + /* Fields involved in checkpoints */ + ulint log_group_capacity; /* capacity of the log group; if + the checkpoint age exceeds this, it is + a serious error because it is possible + we will then overwrite log and spoil + crash recovery */ + ulint max_modified_age_async; + /* when this recommended value for lsn + - buf_pool_get_oldest_modification() + is exceeded, we start an asynchronous + preflush of pool pages */ + ulint max_modified_age_sync; + /* when this recommended value for lsn + - buf_pool_get_oldest_modification() + is exceeded, we start a synchronous + preflush of pool pages */ + ulint adm_checkpoint_interval; + /* administrator-specified checkpoint + interval in terms of log growth in + bytes; the interval actually used by + the database can be smaller */ + ulint max_checkpoint_age_async; + /* when this checkpoint age is exceeded + we start an asynchronous writing of a + new checkpoint */ + ulint max_checkpoint_age; + /* this is the maximum allowed value + for lsn - last_checkpoint_lsn when a + new query step is started */ + ib_uint64_t next_checkpoint_no; + /* next checkpoint number */ + ib_uint64_t last_checkpoint_lsn; + /* latest checkpoint lsn */ + ib_uint64_t next_checkpoint_lsn; + /* next checkpoint lsn */ + ulint n_pending_checkpoint_writes; + /* number of currently pending + checkpoint writes */ + rw_lock_t checkpoint_lock;/* this latch is x-locked when a + checkpoint write is running; a thread + should wait for this without owning + the log mutex */ + byte* checkpoint_buf; /* checkpoint header is read to this + buffer */ +#ifdef UNIV_LOG_ARCHIVE + /* Fields involved in archiving */ + ulint archiving_state;/* LOG_ARCH_ON, LOG_ARCH_STOPPING + LOG_ARCH_STOPPED, LOG_ARCH_OFF */ + ib_uint64_t archived_lsn; /* archiving has advanced to this + lsn */ + ulint max_archived_lsn_age_async; + /* recommended maximum age of + archived_lsn, before we start + asynchronous copying to the archive */ + ulint max_archived_lsn_age; + /* maximum allowed age for + archived_lsn */ + ib_uint64_t next_archived_lsn;/* during an archive write, + until the write is completed, we + store the next value for + archived_lsn here: the write + completion function then sets the new + value to archived_lsn */ + ulint archiving_phase;/* LOG_ARCHIVE_READ or + LOG_ARCHIVE_WRITE */ + ulint n_pending_archive_ios; + /* number of currently pending reads + or writes in archiving */ + rw_lock_t archive_lock; /* this latch is x-locked when an + archive write is running; a thread + should wait for this without owning + the log mutex */ + ulint archive_buf_size;/* size of archive_buf */ + byte* archive_buf; /* log segment is written to the + archive from this buffer */ + os_event_t archiving_on; /* if archiving has been stopped, + a thread can wait for this event to + become signaled */ +#endif /* UNIV_LOG_ARCHIVE */ +}; + +#define LOG_ARCH_ON 71 +#define LOG_ARCH_STOPPING 72 +#define LOG_ARCH_STOPPING2 73 +#define LOG_ARCH_STOPPED 74 +#define LOG_ARCH_OFF 75 + +#ifndef UNIV_NONINL +#include "log0log.ic" +#endif + +#endif === added file 'storage/xtradb/include/log0log.ic' --- a/storage/xtradb/include/log0log.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/log0log.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,407 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Database log + +Created 12/9/1995 Heikki Tuuri +*******************************************************/ + +#include "os0file.h" +#include "mach0data.h" +#include "mtr0mtr.h" + +/********************************************************** +Checks by parsing that the catenated log segment for a single mtr is +consistent. */ +UNIV_INTERN +ibool +log_check_log_recs( +/*===============*/ + byte* buf, /* in: pointer to the start of + the log segment in the + log_sys->buf log buffer */ + ulint len, /* in: segment length in bytes */ + ib_uint64_t buf_start_lsn); /* in: buffer start lsn */ + +/**************************************************************** +Gets a log block flush bit. */ +UNIV_INLINE +ibool +log_block_get_flush_bit( +/*====================*/ + /* out: TRUE if this block was the first + to be written in a log flush */ + byte* log_block) /* in: log block */ +{ + if (LOG_BLOCK_FLUSH_BIT_MASK + & mach_read_from_4(log_block + LOG_BLOCK_HDR_NO)) { + + return(TRUE); + } + + return(FALSE); +} + +/**************************************************************** +Sets the log block flush bit. */ +UNIV_INLINE +void +log_block_set_flush_bit( +/*====================*/ + byte* log_block, /* in: log block */ + ibool val) /* in: value to set */ +{ + ulint field; + + field = mach_read_from_4(log_block + LOG_BLOCK_HDR_NO); + + if (val) { + field = field | LOG_BLOCK_FLUSH_BIT_MASK; + } else { + field = field & ~LOG_BLOCK_FLUSH_BIT_MASK; + } + + mach_write_to_4(log_block + LOG_BLOCK_HDR_NO, field); +} + +/**************************************************************** +Gets a log block number stored in the header. */ +UNIV_INLINE +ulint +log_block_get_hdr_no( +/*=================*/ + /* out: log block number stored in the block + header */ + byte* log_block) /* in: log block */ +{ + return(~LOG_BLOCK_FLUSH_BIT_MASK + & mach_read_from_4(log_block + LOG_BLOCK_HDR_NO)); +} + +/**************************************************************** +Sets the log block number stored in the header; NOTE that this must be set +before the flush bit! */ +UNIV_INLINE +void +log_block_set_hdr_no( +/*=================*/ + byte* log_block, /* in: log block */ + ulint n) /* in: log block number: must be > 0 and + < LOG_BLOCK_FLUSH_BIT_MASK */ +{ + ut_ad(n > 0); + ut_ad(n < LOG_BLOCK_FLUSH_BIT_MASK); + + mach_write_to_4(log_block + LOG_BLOCK_HDR_NO, n); +} + +/**************************************************************** +Gets a log block data length. */ +UNIV_INLINE +ulint +log_block_get_data_len( +/*===================*/ + /* out: log block data length measured as a + byte offset from the block start */ + byte* log_block) /* in: log block */ +{ + return(mach_read_from_2(log_block + LOG_BLOCK_HDR_DATA_LEN)); +} + +/**************************************************************** +Sets the log block data length. */ +UNIV_INLINE +void +log_block_set_data_len( +/*===================*/ + byte* log_block, /* in: log block */ + ulint len) /* in: data length */ +{ + mach_write_to_2(log_block + LOG_BLOCK_HDR_DATA_LEN, len); +} + +/**************************************************************** +Gets a log block first mtr log record group offset. */ +UNIV_INLINE +ulint +log_block_get_first_rec_group( +/*==========================*/ + /* out: first mtr log record group byte offset + from the block start, 0 if none */ + byte* log_block) /* in: log block */ +{ + return(mach_read_from_2(log_block + LOG_BLOCK_FIRST_REC_GROUP)); +} + +/**************************************************************** +Sets the log block first mtr log record group offset. */ +UNIV_INLINE +void +log_block_set_first_rec_group( +/*==========================*/ + byte* log_block, /* in: log block */ + ulint offset) /* in: offset, 0 if none */ +{ + mach_write_to_2(log_block + LOG_BLOCK_FIRST_REC_GROUP, offset); +} + +/**************************************************************** +Gets a log block checkpoint number field (4 lowest bytes). */ +UNIV_INLINE +ulint +log_block_get_checkpoint_no( +/*========================*/ + /* out: checkpoint no (4 lowest bytes) */ + byte* log_block) /* in: log block */ +{ + return(mach_read_from_4(log_block + LOG_BLOCK_CHECKPOINT_NO)); +} + +/**************************************************************** +Sets a log block checkpoint number field (4 lowest bytes). */ +UNIV_INLINE +void +log_block_set_checkpoint_no( +/*========================*/ + byte* log_block, /* in: log block */ + ib_uint64_t no) /* in: checkpoint no */ +{ + mach_write_to_4(log_block + LOG_BLOCK_CHECKPOINT_NO, (ulint) no); +} + +/**************************************************************** +Converts a lsn to a log block number. */ +UNIV_INLINE +ulint +log_block_convert_lsn_to_no( +/*========================*/ + /* out: log block number, + it is > 0 and <= 1G */ + ib_uint64_t lsn) /* in: lsn of a byte within the block */ +{ + return(((ulint) (lsn / OS_FILE_LOG_BLOCK_SIZE) & 0x3FFFFFFFUL) + 1); +} + +/**************************************************************** +Calculates the checksum for a log block. */ +UNIV_INLINE +ulint +log_block_calc_checksum( +/*====================*/ + /* out: checksum */ + const byte* block) /* in: log block */ +{ + ulint sum; + ulint sh; + ulint i; + + sum = 1; + sh = 0; + + for (i = 0; i < OS_FILE_LOG_BLOCK_SIZE - LOG_BLOCK_TRL_SIZE; i++) { + ulint b = (ulint) block[i]; + sum &= 0x7FFFFFFFUL; + sum += b; + sum += b << sh; + sh++; + if (sh > 24) { + sh = 0; + } + } + + return(sum); +} + +/**************************************************************** +Gets a log block checksum field value. */ +UNIV_INLINE +ulint +log_block_get_checksum( +/*===================*/ + /* out: checksum */ + const byte* log_block) /* in: log block */ +{ + return(mach_read_from_4(log_block + OS_FILE_LOG_BLOCK_SIZE + - LOG_BLOCK_CHECKSUM)); +} + +/**************************************************************** +Sets a log block checksum field value. */ +UNIV_INLINE +void +log_block_set_checksum( +/*===================*/ + byte* log_block, /* in: log block */ + ulint checksum) /* in: checksum */ +{ + mach_write_to_4(log_block + OS_FILE_LOG_BLOCK_SIZE + - LOG_BLOCK_CHECKSUM, + checksum); +} + +/**************************************************************** +Initializes a log block in the log buffer. */ +UNIV_INLINE +void +log_block_init( +/*===========*/ + byte* log_block, /* in: pointer to the log buffer */ + ib_uint64_t lsn) /* in: lsn within the log block */ +{ + ulint no; + + ut_ad(mutex_own(&(log_sys->mutex))); + + no = log_block_convert_lsn_to_no(lsn); + + log_block_set_hdr_no(log_block, no); + + log_block_set_data_len(log_block, LOG_BLOCK_HDR_SIZE); + log_block_set_first_rec_group(log_block, 0); +} + +/**************************************************************** +Initializes a log block in the log buffer in the old format, where there +was no checksum yet. */ +UNIV_INLINE +void +log_block_init_in_old_format( +/*=========================*/ + byte* log_block, /* in: pointer to the log buffer */ + ib_uint64_t lsn) /* in: lsn within the log block */ +{ + ulint no; + + ut_ad(mutex_own(&(log_sys->mutex))); + + no = log_block_convert_lsn_to_no(lsn); + + log_block_set_hdr_no(log_block, no); + mach_write_to_4(log_block + OS_FILE_LOG_BLOCK_SIZE + - LOG_BLOCK_CHECKSUM, no); + log_block_set_data_len(log_block, LOG_BLOCK_HDR_SIZE); + log_block_set_first_rec_group(log_block, 0); +} + +/**************************************************************** +Writes to the log the string given. The log must be released with +log_release. */ +UNIV_INLINE +ib_uint64_t +log_reserve_and_write_fast( +/*=======================*/ + /* out: end lsn of the log record, + zero if did not succeed */ + byte* str, /* in: string */ + ulint len, /* in: string length */ + ib_uint64_t* start_lsn,/* out: start lsn of the log record */ + ibool* success)/* out: TRUE if success */ +{ + log_t* log = log_sys; + ulint data_len; + ib_uint64_t lsn; + + *success = TRUE; + + mutex_enter(&(log->mutex)); + + data_len = len + log->buf_free % OS_FILE_LOG_BLOCK_SIZE; + + if (data_len >= OS_FILE_LOG_BLOCK_SIZE - LOG_BLOCK_TRL_SIZE) { + + /* The string does not fit within the current log block + or the log block would become full */ + + *success = FALSE; + + mutex_exit(&(log->mutex)); + + return(0); + } + + *start_lsn = log->lsn; + + ut_memcpy(log->buf + log->buf_free, str, len); + + log_block_set_data_len((byte*) ut_align_down(log->buf + log->buf_free, + OS_FILE_LOG_BLOCK_SIZE), + data_len); +#ifdef UNIV_LOG_DEBUG + log->old_buf_free = log->buf_free; + log->old_lsn = log->lsn; +#endif + log->buf_free += len; + + ut_ad(log->buf_free <= log->buf_size); + + lsn = log->lsn += len; + +#ifdef UNIV_LOG_DEBUG + log_check_log_recs(log->buf + log->old_buf_free, + log->buf_free - log->old_buf_free, log->old_lsn); +#endif + return(lsn); +} + +/*************************************************************************** +Releases the log mutex. */ +UNIV_INLINE +void +log_release(void) +/*=============*/ +{ + mutex_exit(&(log_sys->mutex)); +} + +/**************************************************************** +Gets the current lsn. */ +UNIV_INLINE +ib_uint64_t +log_get_lsn(void) +/*=============*/ + /* out: current lsn */ +{ + ib_uint64_t lsn; + + mutex_enter(&(log_sys->mutex)); + + lsn = log_sys->lsn; + + mutex_exit(&(log_sys->mutex)); + + return(lsn); +} + +/*************************************************************************** +Checks if there is need for a log buffer flush or a new checkpoint, and does +this if yes. Any database operation should call this when it has modified +more than about 4 pages. NOTE that this function may only be called when the +OS thread owns no synchronization objects except the dictionary mutex. */ +UNIV_INLINE +void +log_free_check(void) +/*================*/ +{ + /* ut_ad(sync_thread_levels_empty()); */ + + if (log_sys->check_flush_or_checkpoint) { + + log_check_margins(); + } +} === added file 'storage/xtradb/include/log0recv.h' --- a/storage/xtradb/include/log0recv.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/log0recv.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,392 @@ +/***************************************************************************** + +Copyright (c) 1997, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Recovery + +Created 9/20/1997 Heikki Tuuri +*******************************************************/ + +#ifndef log0recv_h +#define log0recv_h + +#include "univ.i" +#include "ut0byte.h" +#include "buf0types.h" +#include "hash0hash.h" +#include "log0log.h" + +#ifdef UNIV_HOTBACKUP +extern ibool recv_replay_file_ops; + +/*********************************************************************** +Reads the checkpoint info needed in hot backup. */ +UNIV_INTERN +ibool +recv_read_cp_info_for_backup( +/*=========================*/ + /* out: TRUE if success */ + byte* hdr, /* in: buffer containing the log group + header */ + ib_uint64_t* lsn, /* out: checkpoint lsn */ + ulint* offset, /* out: checkpoint offset in the log group */ + ulint* fsp_limit,/* out: fsp limit of space 0, + 1000000000 if the database is running + with < version 3.23.50 of InnoDB */ + ib_uint64_t* cp_no, /* out: checkpoint number */ + ib_uint64_t* first_header_lsn); + /* out: lsn of of the start of the + first log file */ +/*********************************************************************** +Scans the log segment and n_bytes_scanned is set to the length of valid +log scanned. */ +UNIV_INTERN +void +recv_scan_log_seg_for_backup( +/*=========================*/ + byte* buf, /* in: buffer containing log data */ + ulint buf_len, /* in: data length in that buffer */ + ib_uint64_t* scanned_lsn, /* in/out: lsn of buffer start, + we return scanned lsn */ + ulint* scanned_checkpoint_no, + /* in/out: 4 lowest bytes of the + highest scanned checkpoint number so + far */ + ulint* n_bytes_scanned);/* out: how much we were able to + scan, smaller than buf_len if log + data ended here */ +#endif /* UNIV_HOTBACKUP */ +/*********************************************************************** +Returns TRUE if recovery is currently running. */ +UNIV_INLINE +ibool +recv_recovery_is_on(void); +/*=====================*/ +/*********************************************************************** +Returns TRUE if recovery from backup is currently running. */ +UNIV_INLINE +ibool +recv_recovery_from_backup_is_on(void); +/*=================================*/ +/**************************************************************************** +Applies the hashed log records to the page, if the page lsn is less than the +lsn of a log record. This can be called when a buffer page has just been +read in, or also for a page already in the buffer pool. */ +UNIV_INTERN +void +recv_recover_page( +/*==============*/ + ibool recover_backup, + /* in: TRUE if we are recovering a backup + page: then we do not acquire any latches + since the page was read in outside the + buffer pool */ + ibool just_read_in, + /* in: TRUE if the i/o-handler calls this for + a freshly read page */ + buf_block_t* block); /* in: buffer block */ +/************************************************************ +Recovers from a checkpoint. When this function returns, the database is able +to start processing of new user transactions, but the function +recv_recovery_from_checkpoint_finish should be called later to complete +the recovery and free the resources used in it. */ +UNIV_INTERN +ulint +recv_recovery_from_checkpoint_start_func( +/*=====================================*/ + /* out: error code or DB_SUCCESS */ +#ifdef UNIV_LOG_ARCHIVE + ulint type, /* in: LOG_CHECKPOINT or LOG_ARCHIVE */ + ib_uint64_t limit_lsn, /* in: recover up to this lsn + if possible */ +#endif /* UNIV_LOG_ARCHIVE */ + ib_uint64_t min_flushed_lsn,/* in: min flushed lsn from + data files */ + ib_uint64_t max_flushed_lsn);/* in: max flushed lsn from + data files */ +#ifdef UNIV_LOG_ARCHIVE +# define recv_recovery_from_checkpoint_start(type,lim,min,max) \ + recv_recovery_from_checkpoint_start_func(type,lim,min,max) +#else /* UNIV_LOG_ARCHIVE */ +# define recv_recovery_from_checkpoint_start(type,lim,min,max) \ + recv_recovery_from_checkpoint_start_func(min,max) +#endif /* UNIV_LOG_ARCHIVE */ +/************************************************************ +Completes recovery from a checkpoint. */ +UNIV_INTERN +void +recv_recovery_from_checkpoint_finish(void); +/*======================================*/ +/*********************************************************** +Scans log from a buffer and stores new log data to the parsing buffer. Parses +and hashes the log records if new data found. */ +UNIV_INTERN +ibool +recv_scan_log_recs( +/*===============*/ + /* out: TRUE if limit_lsn has been + reached, or not able to scan any more + in this log group */ + ibool apply_automatically,/* in: TRUE if we want this + function to apply log records + automatically when the hash table + becomes full; in the hot backup tool + the tool does the applying, not this + function */ + ulint available_memory,/* in: we let the hash table of recs + to grow to this size, at the maximum */ + ibool store_to_hash, /* in: TRUE if the records should be + stored to the hash table; this is set + to FALSE if just debug checking is + needed */ + byte* buf, /* in: buffer containing a log segment + or garbage */ + ulint len, /* in: buffer length */ + ib_uint64_t start_lsn, /* in: buffer start lsn */ + ib_uint64_t* contiguous_lsn, /* in/out: it is known that all log + groups contain contiguous log data up + to this lsn */ + ib_uint64_t* group_scanned_lsn);/* out: scanning succeeded up to + this lsn */ +/********************************************************** +Resets the logs. The contents of log files will be lost! */ +UNIV_INTERN +void +recv_reset_logs( +/*============*/ + ib_uint64_t lsn, /* in: reset to this lsn + rounded up to be divisible by + OS_FILE_LOG_BLOCK_SIZE, after + which we add + LOG_BLOCK_HDR_SIZE */ +#ifdef UNIV_LOG_ARCHIVE + ulint arch_log_no, /* in: next archived log file number */ +#endif /* UNIV_LOG_ARCHIVE */ + ibool new_logs_created);/* in: TRUE if resetting logs + is done at the log creation; + FALSE if it is done after + archive recovery */ +#ifdef UNIV_HOTBACKUP +/********************************************************** +Creates new log files after a backup has been restored. */ +UNIV_INTERN +void +recv_reset_log_files_for_backup( +/*============================*/ + const char* log_dir, /* in: log file directory path */ + ulint n_log_files, /* in: number of log files */ + ulint log_file_size, /* in: log file size */ + ib_uint64_t lsn); /* in: new start lsn, must be + divisible by OS_FILE_LOG_BLOCK_SIZE */ +#endif /* UNIV_HOTBACKUP */ +/************************************************************ +Creates the recovery system. */ +UNIV_INTERN +void +recv_sys_create(void); +/*=================*/ +/************************************************************ +Inits the recovery system for a recovery operation. */ +UNIV_INTERN +void +recv_sys_init( +/*==========*/ + ibool recover_from_backup, /* in: TRUE if this is called + to recover from a hot backup */ + ulint available_memory); /* in: available memory in bytes */ +/*********************************************************************** +Empties the hash table of stored log records, applying them to appropriate +pages. */ +UNIV_INTERN +void +recv_apply_hashed_log_recs( +/*=======================*/ + ibool allow_ibuf); /* in: if TRUE, also ibuf operations are + allowed during the application; if FALSE, + no ibuf operations are allowed, and after + the application all file pages are flushed to + disk and invalidated in buffer pool: this + alternative means that no new log records + can be generated during the application */ +#ifdef UNIV_HOTBACKUP +/*********************************************************************** +Applies log records in the hash table to a backup. */ +UNIV_INTERN +void +recv_apply_log_recs_for_backup(void); +/*================================*/ +#endif +#ifdef UNIV_LOG_ARCHIVE +/************************************************************ +Recovers from archived log files, and also from log files, if they exist. */ +UNIV_INTERN +ulint +recv_recovery_from_archive_start( +/*=============================*/ + /* out: error code or DB_SUCCESS */ + ib_uint64_t min_flushed_lsn,/* in: min flushed lsn field from the + data files */ + ib_uint64_t limit_lsn, /* in: recover up to this lsn if + possible */ + ulint first_log_no); /* in: number of the first archived + log file to use in the recovery; the + file will be searched from + INNOBASE_LOG_ARCH_DIR specified in + server config file */ +/************************************************************ +Completes recovery from archive. */ +UNIV_INTERN +void +recv_recovery_from_archive_finish(void); +/*===================================*/ +#endif /* UNIV_LOG_ARCHIVE */ + +/* Block of log record data */ +typedef struct recv_data_struct recv_data_t; +struct recv_data_struct{ + recv_data_t* next; /* pointer to the next block or NULL */ + /* the log record data is stored physically + immediately after this struct, max amount + RECV_DATA_BLOCK_SIZE bytes of it */ +}; + +/* Stored log record struct */ +typedef struct recv_struct recv_t; +struct recv_struct{ + byte type; /* log record type */ + ulint len; /* log record body length in bytes */ + recv_data_t* data; /* chain of blocks containing the log record + body */ + ib_uint64_t start_lsn;/* start lsn of the log segment written by + the mtr which generated this log record: NOTE + that this is not necessarily the start lsn of + this log record */ + ib_uint64_t end_lsn;/* end lsn of the log segment written by + the mtr which generated this log record: NOTE + that this is not necessarily the end lsn of + this log record */ + UT_LIST_NODE_T(recv_t) + rec_list;/* list of log records for this page */ +}; + +/* Hashed page file address struct */ +typedef struct recv_addr_struct recv_addr_t; +struct recv_addr_struct{ + ulint state; /* RECV_NOT_PROCESSED, RECV_BEING_PROCESSED, + or RECV_PROCESSED */ + ulint space; /* space id */ + ulint page_no;/* page number */ + UT_LIST_BASE_NODE_T(recv_t) + rec_list;/* list of log records for this page */ + hash_node_t addr_hash; +}; + +/* Recovery system data structure */ +typedef struct recv_sys_struct recv_sys_t; +struct recv_sys_struct{ + mutex_t mutex; /* mutex protecting the fields apply_log_recs, + n_addrs, and the state field in each recv_addr + struct */ + ibool apply_log_recs; + /* this is TRUE when log rec application to + pages is allowed; this flag tells the + i/o-handler if it should do log record + application */ + ibool apply_batch_on; + /* this is TRUE when a log rec application + batch is running */ + ib_uint64_t lsn; /* log sequence number */ + ulint last_log_buf_size; + /* size of the log buffer when the database + last time wrote to the log */ + byte* last_block; + /* possible incomplete last recovered log + block */ + byte* last_block_buf_start; + /* the nonaligned start address of the + preceding buffer */ + byte* buf; /* buffer for parsing log records */ + ulint len; /* amount of data in buf */ + ib_uint64_t parse_start_lsn; + /* this is the lsn from which we were able to + start parsing log records and adding them to + the hash table; zero if a suitable + start point not found yet */ + ib_uint64_t scanned_lsn; + /* the log data has been scanned up to this + lsn */ + ulint scanned_checkpoint_no; + /* the log data has been scanned up to this + checkpoint number (lowest 4 bytes) */ + ulint recovered_offset; + /* start offset of non-parsed log records in + buf */ + ib_uint64_t recovered_lsn; + /* the log records have been parsed up to + this lsn */ + ib_uint64_t limit_lsn;/* recovery should be made at most up to this + lsn */ + ibool found_corrupt_log; + /* this is set to TRUE if we during log + scan find a corrupt log block, or a corrupt + log record, or there is a log parsing + buffer overflow */ +#ifdef UNIV_LOG_ARCHIVE + log_group_t* archive_group; + /* in archive recovery: the log group whose + archive is read */ +#endif /* !UNIV_LOG_ARCHIVE */ + mem_heap_t* heap; /* memory heap of log records and file + addresses*/ + hash_table_t* addr_hash;/* hash table of file addresses of pages */ + ulint n_addrs;/* number of not processed hashed file + addresses in the hash table */ +}; + +extern recv_sys_t* recv_sys; +extern ibool recv_recovery_on; +extern ibool recv_no_ibuf_operations; +extern ibool recv_needed_recovery; + +extern ibool recv_lsn_checks_on; +#ifdef UNIV_HOTBACKUP +extern ibool recv_is_making_a_backup; +#endif /* UNIV_HOTBACKUP */ +extern ulint recv_max_parsed_page_no; + +/* Size of the parsing buffer; it must accommodate RECV_SCAN_SIZE many +times! */ +#define RECV_PARSING_BUF_SIZE (2 * 1024 * 1024) + +/* Size of block reads when the log groups are scanned forward to do a +roll-forward */ +#define RECV_SCAN_SIZE (4 * UNIV_PAGE_SIZE) + +/* States of recv_addr_struct */ +#define RECV_NOT_PROCESSED 71 +#define RECV_BEING_READ 72 +#define RECV_BEING_PROCESSED 73 +#define RECV_PROCESSED 74 + +extern ulint recv_n_pool_free_frames; + +#ifndef UNIV_NONINL +#include "log0recv.ic" +#endif + +#endif === added file 'storage/xtradb/include/log0recv.ic' --- a/storage/xtradb/include/log0recv.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/log0recv.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,48 @@ +/***************************************************************************** + +Copyright (c) 1997, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Recovery + +Created 9/20/1997 Heikki Tuuri +*******************************************************/ + +#include "univ.i" + +extern ibool recv_recovery_from_backup_on; + +/*********************************************************************** +Returns TRUE if recovery is currently running. */ +UNIV_INLINE +ibool +recv_recovery_is_on(void) +/*=====================*/ +{ + return(UNIV_UNLIKELY(recv_recovery_on)); +} + +/*********************************************************************** +Returns TRUE if recovery from backup is currently running. */ +UNIV_INLINE +ibool +recv_recovery_from_backup_is_on(void) +/*=================================*/ +{ + return(recv_recovery_from_backup_on); +} + === added file 'storage/xtradb/include/mach0data.h' --- a/storage/xtradb/include/mach0data.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/mach0data.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,398 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/********************************************************************** +Utilities for converting data from the database file +to the machine format. + +Created 11/28/1995 Heikki Tuuri +***********************************************************************/ + +#ifndef mach0data_h +#define mach0data_h + +#include "univ.i" +#include "ut0byte.h" + +/* The data and all fields are always stored in a database file +in the same format: ascii, big-endian, ... . +All data in the files MUST be accessed using the functions in this +module. */ + +/*********************************************************** +The following function is used to store data in one byte. */ +UNIV_INLINE +void +mach_write_to_1( +/*============*/ + byte* b, /* in: pointer to byte where to store */ + ulint n); /* in: ulint integer to be stored, >= 0, < 256 */ +/************************************************************ +The following function is used to fetch data from one byte. */ +UNIV_INLINE +ulint +mach_read_from_1( +/*=============*/ + /* out: ulint integer, >= 0, < 256 */ + const byte* b) /* in: pointer to byte */ + __attribute__((nonnull, pure)); +/*********************************************************** +The following function is used to store data in two consecutive +bytes. We store the most significant byte to the lower address. */ +UNIV_INLINE +void +mach_write_to_2( +/*============*/ + byte* b, /* in: pointer to two bytes where to store */ + ulint n); /* in: ulint integer to be stored, >= 0, < 64k */ +/************************************************************ +The following function is used to fetch data from two consecutive +bytes. The most significant byte is at the lowest address. */ +UNIV_INLINE +ulint +mach_read_from_2( +/*=============*/ + /* out: ulint integer, >= 0, < 64k */ + const byte* b) /* in: pointer to two bytes */ + __attribute__((nonnull, pure)); + +/************************************************************ +The following function is used to convert a 16-bit data item +to the canonical format, for fast bytewise equality test +against memory. */ +UNIV_INLINE +uint16 +mach_encode_2( +/*==========*/ + /* out: 16-bit integer in canonical format */ + ulint n) /* in: integer in machine-dependent format */ + __attribute__((const)); +/************************************************************ +The following function is used to convert a 16-bit data item +from the canonical format, for fast bytewise equality test +against memory. */ +UNIV_INLINE +ulint +mach_decode_2( +/*==========*/ + /* out: integer in machine-dependent format */ + uint16 n) /* in: 16-bit integer in canonical format */ + __attribute__((const)); +/*********************************************************** +The following function is used to store data in 3 consecutive +bytes. We store the most significant byte to the lowest address. */ +UNIV_INLINE +void +mach_write_to_3( +/*============*/ + byte* b, /* in: pointer to 3 bytes where to store */ + ulint n); /* in: ulint integer to be stored */ +/************************************************************ +The following function is used to fetch data from 3 consecutive +bytes. The most significant byte is at the lowest address. */ +UNIV_INLINE +ulint +mach_read_from_3( +/*=============*/ + /* out: ulint integer */ + const byte* b) /* in: pointer to 3 bytes */ + __attribute__((nonnull, pure)); +/*********************************************************** +The following function is used to store data in four consecutive +bytes. We store the most significant byte to the lowest address. */ +UNIV_INLINE +void +mach_write_to_4( +/*============*/ + byte* b, /* in: pointer to four bytes where to store */ + ulint n); /* in: ulint integer to be stored */ +/************************************************************ +The following function is used to fetch data from 4 consecutive +bytes. The most significant byte is at the lowest address. */ +UNIV_INLINE +ulint +mach_read_from_4( +/*=============*/ + /* out: ulint integer */ + const byte* b) /* in: pointer to four bytes */ + __attribute__((nonnull, pure)); +/************************************************************* +Writes a ulint in a compressed form (1..5 bytes). */ +UNIV_INLINE +ulint +mach_write_compressed( +/*==================*/ + /* out: stored size in bytes */ + byte* b, /* in: pointer to memory where to store */ + ulint n); /* in: ulint integer to be stored */ +/************************************************************* +Returns the size of an ulint when written in the compressed form. */ +UNIV_INLINE +ulint +mach_get_compressed_size( +/*=====================*/ + /* out: compressed size in bytes */ + ulint n) /* in: ulint integer to be stored */ + __attribute__((const)); +/************************************************************* +Reads a ulint in a compressed form. */ +UNIV_INLINE +ulint +mach_read_compressed( +/*=================*/ + /* out: read integer */ + const byte* b) /* in: pointer to memory from where to read */ + __attribute__((nonnull, pure)); +/*********************************************************** +The following function is used to store data in 6 consecutive +bytes. We store the most significant byte to the lowest address. */ +UNIV_INLINE +void +mach_write_to_6( +/*============*/ + byte* b, /* in: pointer to 6 bytes where to store */ + dulint n); /* in: dulint integer to be stored */ +/************************************************************ +The following function is used to fetch data from 6 consecutive +bytes. The most significant byte is at the lowest address. */ +UNIV_INLINE +dulint +mach_read_from_6( +/*=============*/ + /* out: dulint integer */ + const byte* b) /* in: pointer to 6 bytes */ + __attribute__((nonnull, pure)); +/*********************************************************** +The following function is used to store data in 7 consecutive +bytes. We store the most significant byte to the lowest address. */ +UNIV_INLINE +void +mach_write_to_7( +/*============*/ + byte* b, /* in: pointer to 7 bytes where to store */ + dulint n); /* in: dulint integer to be stored */ +/************************************************************ +The following function is used to fetch data from 7 consecutive +bytes. The most significant byte is at the lowest address. */ +UNIV_INLINE +dulint +mach_read_from_7( +/*=============*/ + /* out: dulint integer */ + const byte* b) /* in: pointer to 7 bytes */ + __attribute__((nonnull, pure)); +/*********************************************************** +The following function is used to store data in 8 consecutive +bytes. We store the most significant byte to the lowest address. */ +UNIV_INLINE +void +mach_write_to_8( +/*============*/ + byte* b, /* in: pointer to 8 bytes where to store */ + dulint n); /* in: dulint integer to be stored */ +/*********************************************************** +The following function is used to store data in 8 consecutive +bytes. We store the most significant byte to the lowest address. */ +UNIV_INLINE +void +mach_write_ull( +/*===========*/ + byte* b, /* in: pointer to 8 bytes where to store */ + ib_uint64_t n); /* in: 64-bit integer to be stored */ +/************************************************************ +The following function is used to fetch data from 8 consecutive +bytes. The most significant byte is at the lowest address. */ +UNIV_INLINE +dulint +mach_read_from_8( +/*=============*/ + /* out: dulint integer */ + const byte* b) /* in: pointer to 8 bytes */ + __attribute__((nonnull, pure)); +/************************************************************ +The following function is used to fetch data from 8 consecutive +bytes. The most significant byte is at the lowest address. */ +UNIV_INLINE +ib_uint64_t +mach_read_ull( +/*==========*/ + /* out: 64-bit integer */ + const byte* b) /* in: pointer to 8 bytes */ + __attribute__((nonnull, pure)); +/************************************************************* +Writes a dulint in a compressed form (5..9 bytes). */ +UNIV_INLINE +ulint +mach_dulint_write_compressed( +/*=========================*/ + /* out: size in bytes */ + byte* b, /* in: pointer to memory where to store */ + dulint n); /* in: dulint integer to be stored */ +/************************************************************* +Returns the size of a dulint when written in the compressed form. */ +UNIV_INLINE +ulint +mach_dulint_get_compressed_size( +/*============================*/ + /* out: compressed size in bytes */ + dulint n); /* in: dulint integer to be stored */ +/************************************************************* +Reads a dulint in a compressed form. */ +UNIV_INLINE +dulint +mach_dulint_read_compressed( +/*========================*/ + /* out: read dulint */ + const byte* b) /* in: pointer to memory from where to read */ + __attribute__((nonnull, pure)); +/************************************************************* +Writes a dulint in a compressed form (1..11 bytes). */ +UNIV_INLINE +ulint +mach_dulint_write_much_compressed( +/*==============================*/ + /* out: size in bytes */ + byte* b, /* in: pointer to memory where to store */ + dulint n); /* in: dulint integer to be stored */ +/************************************************************* +Returns the size of a dulint when written in the compressed form. */ +UNIV_INLINE +ulint +mach_dulint_get_much_compressed_size( +/*=================================*/ + /* out: compressed size in bytes */ + dulint n) /* in: dulint integer to be stored */ + __attribute__((const)); +/************************************************************* +Reads a dulint in a compressed form. */ +UNIV_INLINE +dulint +mach_dulint_read_much_compressed( +/*=============================*/ + /* out: read dulint */ + const byte* b) /* in: pointer to memory from where to read */ + __attribute__((nonnull, pure)); +/************************************************************* +Reads a ulint in a compressed form if the log record fully contains it. */ +UNIV_INTERN +byte* +mach_parse_compressed( +/*==================*/ + /* out: pointer to end of the stored field, NULL if + not complete */ + byte* ptr, /* in: pointer to buffer from where to read */ + byte* end_ptr,/* in: pointer to end of the buffer */ + ulint* val); /* out: read value */ +/************************************************************* +Reads a dulint in a compressed form if the log record fully contains it. */ +UNIV_INTERN +byte* +mach_dulint_parse_compressed( +/*=========================*/ + /* out: pointer to end of the stored field, NULL if + not complete */ + byte* ptr, /* in: pointer to buffer from where to read */ + byte* end_ptr,/* in: pointer to end of the buffer */ + dulint* val); /* out: read value */ +/************************************************************* +Reads a double. It is stored in a little-endian format. */ +UNIV_INLINE +double +mach_double_read( +/*=============*/ + /* out: double read */ + const byte* b) /* in: pointer to memory from where to read */ + __attribute__((nonnull, pure)); +/************************************************************* +Writes a double. It is stored in a little-endian format. */ +UNIV_INLINE +void +mach_double_write( +/*==============*/ + byte* b, /* in: pointer to memory where to write */ + double d); /* in: double */ +/************************************************************* +Reads a float. It is stored in a little-endian format. */ +UNIV_INLINE +float +mach_float_read( +/*============*/ + /* out: float read */ + const byte* b) /* in: pointer to memory from where to read */ + __attribute__((nonnull, pure)); +/************************************************************* +Writes a float. It is stored in a little-endian format. */ +UNIV_INLINE +void +mach_float_write( +/*=============*/ + byte* b, /* in: pointer to memory where to write */ + float d); /* in: float */ +/************************************************************* +Reads a ulint stored in the little-endian format. */ +UNIV_INLINE +ulint +mach_read_from_n_little_endian( +/*===========================*/ + /* out: unsigned long int */ + const byte* buf, /* in: from where to read */ + ulint buf_size) /* in: from how many bytes to read */ + __attribute__((nonnull, pure)); +/************************************************************* +Writes a ulint in the little-endian format. */ +UNIV_INLINE +void +mach_write_to_n_little_endian( +/*==========================*/ + byte* dest, /* in: where to write */ + ulint dest_size, /* in: into how many bytes to write */ + ulint n); /* in: unsigned long int to write */ +/************************************************************* +Reads a ulint stored in the little-endian format. */ +UNIV_INLINE +ulint +mach_read_from_2_little_endian( +/*===========================*/ + /* out: unsigned long int */ + const byte* buf) /* in: from where to read */ + __attribute__((nonnull, pure)); +/************************************************************* +Writes a ulint in the little-endian format. */ +UNIV_INLINE +void +mach_write_to_2_little_endian( +/*==========================*/ + byte* dest, /* in: where to write */ + ulint n); /* in: unsigned long int to write */ + +/************************************************************* +Convert integral type from storage byte order (big endian) to +host byte order. */ +UNIV_INLINE +ullint +mach_read_int_type( +/*===============*/ + /* out: integer value */ + const byte* src, /* in: where to read from */ + ulint len, /* in: length of src */ + ibool unsigned_type); /* in: signed or unsigned flag */ +#ifndef UNIV_NONINL +#include "mach0data.ic" +#endif + +#endif === added file 'storage/xtradb/include/mach0data.ic' --- a/storage/xtradb/include/mach0data.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/mach0data.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,784 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/********************************************************************** +Utilities for converting data from the database file +to the machine format. + +Created 11/28/1995 Heikki Tuuri +***********************************************************************/ + +#include "ut0mem.h" + +/*********************************************************** +The following function is used to store data in one byte. */ +UNIV_INLINE +void +mach_write_to_1( +/*============*/ + byte* b, /* in: pointer to byte where to store */ + ulint n) /* in: ulint integer to be stored, >= 0, < 256 */ +{ + ut_ad(b); + ut_ad(n <= 0xFFUL); + + b[0] = (byte)n; +} + +/************************************************************ +The following function is used to fetch data from one byte. */ +UNIV_INLINE +ulint +mach_read_from_1( +/*=============*/ + /* out: ulint integer, >= 0, < 256 */ + const byte* b) /* in: pointer to byte */ +{ + ut_ad(b); + return((ulint)(b[0])); +} + +/*********************************************************** +The following function is used to store data in two consecutive +bytes. We store the most significant byte to the lowest address. */ +UNIV_INLINE +void +mach_write_to_2( +/*============*/ + byte* b, /* in: pointer to two bytes where to store */ + ulint n) /* in: ulint integer to be stored */ +{ + ut_ad(b); + ut_ad(n <= 0xFFFFUL); + + b[0] = (byte)(n >> 8); + b[1] = (byte)(n); +} + +/************************************************************ +The following function is used to fetch data from 2 consecutive +bytes. The most significant byte is at the lowest address. */ +UNIV_INLINE +ulint +mach_read_from_2( +/*=============*/ + /* out: ulint integer */ + const byte* b) /* in: pointer to 2 bytes */ +{ + ut_ad(b); + return( ((ulint)(b[0]) << 8) + + (ulint)(b[1]) + ); +} + +/************************************************************ +The following function is used to convert a 16-bit data item +to the canonical format, for fast bytewise equality test +against memory. */ +UNIV_INLINE +uint16 +mach_encode_2( +/*==========*/ + /* out: 16-bit integer in canonical format */ + ulint n) /* in: integer in machine-dependent format */ +{ + uint16 ret; + ut_ad(2 == sizeof ret); + mach_write_to_2((byte*) &ret, n); + return(ret); +} +/************************************************************ +The following function is used to convert a 16-bit data item +from the canonical format, for fast bytewise equality test +against memory. */ +UNIV_INLINE +ulint +mach_decode_2( +/*==========*/ + /* out: integer in machine-dependent format */ + uint16 n) /* in: 16-bit integer in canonical format */ +{ + ut_ad(2 == sizeof n); + return(mach_read_from_2((const byte*) &n)); +} + +/*********************************************************** +The following function is used to store data in 3 consecutive +bytes. We store the most significant byte to the lowest address. */ +UNIV_INLINE +void +mach_write_to_3( +/*============*/ + byte* b, /* in: pointer to 3 bytes where to store */ + ulint n) /* in: ulint integer to be stored */ +{ + ut_ad(b); + ut_ad(n <= 0xFFFFFFUL); + + b[0] = (byte)(n >> 16); + b[1] = (byte)(n >> 8); + b[2] = (byte)(n); +} + +/************************************************************ +The following function is used to fetch data from 3 consecutive +bytes. The most significant byte is at the lowest address. */ +UNIV_INLINE +ulint +mach_read_from_3( +/*=============*/ + /* out: ulint integer */ + const byte* b) /* in: pointer to 3 bytes */ +{ + ut_ad(b); + return( ((ulint)(b[0]) << 16) + + ((ulint)(b[1]) << 8) + + (ulint)(b[2]) + ); +} + +/*********************************************************** +The following function is used to store data in four consecutive +bytes. We store the most significant byte to the lowest address. */ +UNIV_INLINE +void +mach_write_to_4( +/*============*/ + byte* b, /* in: pointer to four bytes where to store */ + ulint n) /* in: ulint integer to be stored */ +{ + ut_ad(b); + + b[0] = (byte)(n >> 24); + b[1] = (byte)(n >> 16); + b[2] = (byte)(n >> 8); + b[3] = (byte)n; +} + +/************************************************************ +The following function is used to fetch data from 4 consecutive +bytes. The most significant byte is at the lowest address. */ +UNIV_INLINE +ulint +mach_read_from_4( +/*=============*/ + /* out: ulint integer */ + const byte* b) /* in: pointer to four bytes */ +{ + ut_ad(b); + return( ((ulint)(b[0]) << 24) + + ((ulint)(b[1]) << 16) + + ((ulint)(b[2]) << 8) + + (ulint)(b[3]) + ); +} + +/************************************************************* +Writes a ulint in a compressed form where the first byte codes the +length of the stored ulint. We look at the most significant bits of +the byte. If the most significant bit is zero, it means 1-byte storage, +else if the 2nd bit is 0, it means 2-byte storage, else if 3rd is 0, +it means 3-byte storage, else if 4th is 0, it means 4-byte storage, +else the storage is 5-byte. */ +UNIV_INLINE +ulint +mach_write_compressed( +/*==================*/ + /* out: compressed size in bytes */ + byte* b, /* in: pointer to memory where to store */ + ulint n) /* in: ulint integer (< 2^32) to be stored */ +{ + ut_ad(b); + + if (n < 0x80UL) { + mach_write_to_1(b, n); + return(1); + } else if (n < 0x4000UL) { + mach_write_to_2(b, n | 0x8000UL); + return(2); + } else if (n < 0x200000UL) { + mach_write_to_3(b, n | 0xC00000UL); + return(3); + } else if (n < 0x10000000UL) { + mach_write_to_4(b, n | 0xE0000000UL); + return(4); + } else { + mach_write_to_1(b, 0xF0UL); + mach_write_to_4(b + 1, n); + return(5); + } +} + +/************************************************************* +Returns the size of a ulint when written in the compressed form. */ +UNIV_INLINE +ulint +mach_get_compressed_size( +/*=====================*/ + /* out: compressed size in bytes */ + ulint n) /* in: ulint integer (< 2^32) to be stored */ +{ + if (n < 0x80UL) { + return(1); + } else if (n < 0x4000UL) { + return(2); + } else if (n < 0x200000UL) { + return(3); + } else if (n < 0x10000000UL) { + return(4); + } else { + return(5); + } +} + +/************************************************************* +Reads a ulint in a compressed form. */ +UNIV_INLINE +ulint +mach_read_compressed( +/*=================*/ + /* out: read integer (< 2^32) */ + const byte* b) /* in: pointer to memory from where to read */ +{ + ulint flag; + + ut_ad(b); + + flag = mach_read_from_1(b); + + if (flag < 0x80UL) { + return(flag); + } else if (flag < 0xC0UL) { + return(mach_read_from_2(b) & 0x7FFFUL); + } else if (flag < 0xE0UL) { + return(mach_read_from_3(b) & 0x3FFFFFUL); + } else if (flag < 0xF0UL) { + return(mach_read_from_4(b) & 0x1FFFFFFFUL); + } else { + ut_ad(flag == 0xF0UL); + return(mach_read_from_4(b + 1)); + } +} + +/*********************************************************** +The following function is used to store data in 8 consecutive +bytes. We store the most significant byte to the lowest address. */ +UNIV_INLINE +void +mach_write_to_8( +/*============*/ + byte* b, /* in: pointer to 8 bytes where to store */ + dulint n) /* in: dulint integer to be stored */ +{ + ut_ad(b); + + mach_write_to_4(b, ut_dulint_get_high(n)); + mach_write_to_4(b + 4, ut_dulint_get_low(n)); +} + +/*********************************************************** +The following function is used to store data in 8 consecutive +bytes. We store the most significant byte to the lowest address. */ +UNIV_INLINE +void +mach_write_ull( +/*===========*/ + byte* b, /* in: pointer to 8 bytes where to store */ + ib_uint64_t n) /* in: 64-bit integer to be stored */ +{ + ut_ad(b); + + mach_write_to_4(b, (ulint) (n >> 32)); + mach_write_to_4(b + 4, (ulint) n); +} + +/************************************************************ +The following function is used to fetch data from 8 consecutive +bytes. The most significant byte is at the lowest address. */ +UNIV_INLINE +dulint +mach_read_from_8( +/*=============*/ + /* out: dulint integer */ + const byte* b) /* in: pointer to 8 bytes */ +{ + ulint high; + ulint low; + + ut_ad(b); + + high = mach_read_from_4(b); + low = mach_read_from_4(b + 4); + + return(ut_dulint_create(high, low)); +} + +/************************************************************ +The following function is used to fetch data from 8 consecutive +bytes. The most significant byte is at the lowest address. */ +UNIV_INLINE +ib_uint64_t +mach_read_ull( +/*==========*/ + /* out: 64-bit integer */ + const byte* b) /* in: pointer to 8 bytes */ +{ + ib_uint64_t ull; + + ull = ((ib_uint64_t) mach_read_from_4(b)) << 32; + ull |= (ib_uint64_t) mach_read_from_4(b + 4); + + return(ull); +} + +/*********************************************************** +The following function is used to store data in 7 consecutive +bytes. We store the most significant byte to the lowest address. */ +UNIV_INLINE +void +mach_write_to_7( +/*============*/ + byte* b, /* in: pointer to 7 bytes where to store */ + dulint n) /* in: dulint integer to be stored */ +{ + ut_ad(b); + + mach_write_to_3(b, ut_dulint_get_high(n)); + mach_write_to_4(b + 3, ut_dulint_get_low(n)); +} + +/************************************************************ +The following function is used to fetch data from 7 consecutive +bytes. The most significant byte is at the lowest address. */ +UNIV_INLINE +dulint +mach_read_from_7( +/*=============*/ + /* out: dulint integer */ + const byte* b) /* in: pointer to 7 bytes */ +{ + ulint high; + ulint low; + + ut_ad(b); + + high = mach_read_from_3(b); + low = mach_read_from_4(b + 3); + + return(ut_dulint_create(high, low)); +} + +/*********************************************************** +The following function is used to store data in 6 consecutive +bytes. We store the most significant byte to the lowest address. */ +UNIV_INLINE +void +mach_write_to_6( +/*============*/ + byte* b, /* in: pointer to 6 bytes where to store */ + dulint n) /* in: dulint integer to be stored */ +{ + ut_ad(b); + + mach_write_to_2(b, ut_dulint_get_high(n)); + mach_write_to_4(b + 2, ut_dulint_get_low(n)); +} + +/************************************************************ +The following function is used to fetch data from 6 consecutive +bytes. The most significant byte is at the lowest address. */ +UNIV_INLINE +dulint +mach_read_from_6( +/*=============*/ + /* out: dulint integer */ + const byte* b) /* in: pointer to 6 bytes */ +{ + ulint high; + ulint low; + + ut_ad(b); + + high = mach_read_from_2(b); + low = mach_read_from_4(b + 2); + + return(ut_dulint_create(high, low)); +} + +/************************************************************* +Writes a dulint in a compressed form (5..9 bytes). */ +UNIV_INLINE +ulint +mach_dulint_write_compressed( +/*=========================*/ + /* out: size in bytes */ + byte* b, /* in: pointer to memory where to store */ + dulint n) /* in: dulint integer to be stored */ +{ + ulint size; + + ut_ad(b); + + size = mach_write_compressed(b, ut_dulint_get_high(n)); + mach_write_to_4(b + size, ut_dulint_get_low(n)); + + return(size + 4); +} + +/************************************************************* +Returns the size of a dulint when written in the compressed form. */ +UNIV_INLINE +ulint +mach_dulint_get_compressed_size( +/*============================*/ + /* out: compressed size in bytes */ + dulint n) /* in: dulint integer to be stored */ +{ + return(4 + mach_get_compressed_size(ut_dulint_get_high(n))); +} + +/************************************************************* +Reads a dulint in a compressed form. */ +UNIV_INLINE +dulint +mach_dulint_read_compressed( +/*========================*/ + /* out: read dulint */ + const byte* b) /* in: pointer to memory from where to read */ +{ + ulint high; + ulint low; + ulint size; + + ut_ad(b); + + high = mach_read_compressed(b); + + size = mach_get_compressed_size(high); + + low = mach_read_from_4(b + size); + + return(ut_dulint_create(high, low)); +} + +/************************************************************* +Writes a dulint in a compressed form (1..11 bytes). */ +UNIV_INLINE +ulint +mach_dulint_write_much_compressed( +/*==============================*/ + /* out: size in bytes */ + byte* b, /* in: pointer to memory where to store */ + dulint n) /* in: dulint integer to be stored */ +{ + ulint size; + + ut_ad(b); + + if (ut_dulint_get_high(n) == 0) { + return(mach_write_compressed(b, ut_dulint_get_low(n))); + } + + *b = (byte)0xFF; + size = 1 + mach_write_compressed(b + 1, ut_dulint_get_high(n)); + + size += mach_write_compressed(b + size, ut_dulint_get_low(n)); + + return(size); +} + +/************************************************************* +Returns the size of a dulint when written in the compressed form. */ +UNIV_INLINE +ulint +mach_dulint_get_much_compressed_size( +/*=================================*/ + /* out: compressed size in bytes */ + dulint n) /* in: dulint integer to be stored */ +{ + if (0 == ut_dulint_get_high(n)) { + return(mach_get_compressed_size(ut_dulint_get_low(n))); + } + + return(1 + mach_get_compressed_size(ut_dulint_get_high(n)) + + mach_get_compressed_size(ut_dulint_get_low(n))); +} + +/************************************************************* +Reads a dulint in a compressed form. */ +UNIV_INLINE +dulint +mach_dulint_read_much_compressed( +/*=============================*/ + /* out: read dulint */ + const byte* b) /* in: pointer to memory from where to read */ +{ + ulint high; + ulint low; + ulint size; + + ut_ad(b); + + if (*b != (byte)0xFF) { + high = 0; + size = 0; + } else { + high = mach_read_compressed(b + 1); + + size = 1 + mach_get_compressed_size(high); + } + + low = mach_read_compressed(b + size); + + return(ut_dulint_create(high, low)); +} + +/************************************************************* +Reads a double. It is stored in a little-endian format. */ +UNIV_INLINE +double +mach_double_read( +/*=============*/ + /* out: double read */ + const byte* b) /* in: pointer to memory from where to read */ +{ + double d; + ulint i; + byte* ptr; + + ptr = (byte*)&d; + + for (i = 0; i < sizeof(double); i++) { +#ifdef WORDS_BIGENDIAN + ptr[sizeof(double) - i - 1] = b[i]; +#else + ptr[i] = b[i]; +#endif + } + + return(d); +} + +/************************************************************* +Writes a double. It is stored in a little-endian format. */ +UNIV_INLINE +void +mach_double_write( +/*==============*/ + byte* b, /* in: pointer to memory where to write */ + double d) /* in: double */ +{ + ulint i; + byte* ptr; + + ptr = (byte*)&d; + + for (i = 0; i < sizeof(double); i++) { +#ifdef WORDS_BIGENDIAN + b[i] = ptr[sizeof(double) - i - 1]; +#else + b[i] = ptr[i]; +#endif + } +} + +/************************************************************* +Reads a float. It is stored in a little-endian format. */ +UNIV_INLINE +float +mach_float_read( +/*============*/ + /* out: float read */ + const byte* b) /* in: pointer to memory from where to read */ +{ + float d; + ulint i; + byte* ptr; + + ptr = (byte*)&d; + + for (i = 0; i < sizeof(float); i++) { +#ifdef WORDS_BIGENDIAN + ptr[sizeof(float) - i - 1] = b[i]; +#else + ptr[i] = b[i]; +#endif + } + + return(d); +} + +/************************************************************* +Writes a float. It is stored in a little-endian format. */ +UNIV_INLINE +void +mach_float_write( +/*=============*/ + byte* b, /* in: pointer to memory where to write */ + float d) /* in: float */ +{ + ulint i; + byte* ptr; + + ptr = (byte*)&d; + + for (i = 0; i < sizeof(float); i++) { +#ifdef WORDS_BIGENDIAN + b[i] = ptr[sizeof(float) - i - 1]; +#else + b[i] = ptr[i]; +#endif + } +} + +/************************************************************* +Reads a ulint stored in the little-endian format. */ +UNIV_INLINE +ulint +mach_read_from_n_little_endian( +/*===========================*/ + /* out: unsigned long int */ + const byte* buf, /* in: from where to read */ + ulint buf_size) /* in: from how many bytes to read */ +{ + ulint n = 0; + const byte* ptr; + + ut_ad(buf_size <= sizeof(ulint)); + ut_ad(buf_size > 0); + + ptr = buf + buf_size; + + for (;;) { + ptr--; + + n = n << 8; + + n += (ulint)(*ptr); + + if (ptr == buf) { + break; + } + } + + return(n); +} + +/************************************************************* +Writes a ulint in the little-endian format. */ +UNIV_INLINE +void +mach_write_to_n_little_endian( +/*==========================*/ + byte* dest, /* in: where to write */ + ulint dest_size, /* in: into how many bytes to write */ + ulint n) /* in: unsigned long int to write */ +{ + byte* end; + + ut_ad(dest_size <= sizeof(ulint)); + ut_ad(dest_size > 0); + + end = dest + dest_size; + + for (;;) { + *dest = (byte)(n & 0xFF); + + n = n >> 8; + + dest++; + + if (dest == end) { + break; + } + } + + ut_ad(n == 0); +} + +/************************************************************* +Reads a ulint stored in the little-endian format. */ +UNIV_INLINE +ulint +mach_read_from_2_little_endian( +/*===========================*/ + /* out: unsigned long int */ + const byte* buf) /* in: from where to read */ +{ + return((ulint)(*buf) + ((ulint)(*(buf + 1))) * 256); +} + +/************************************************************* +Writes a ulint in the little-endian format. */ +UNIV_INLINE +void +mach_write_to_2_little_endian( +/*==========================*/ + byte* dest, /* in: where to write */ + ulint n) /* in: unsigned long int to write */ +{ + ut_ad(n < 256 * 256); + + *dest = (byte)(n & 0xFFUL); + + n = n >> 8; + dest++; + + *dest = (byte)(n & 0xFFUL); +} + +/************************************************************* +Convert integral type from storage byte order (big endian) to +host byte order. */ +UNIV_INLINE +ullint +mach_read_int_type( +/*===============*/ + /* out: integer value */ + const byte* src, /* in: where to read from */ + ulint len, /* in: length of src */ + ibool unsigned_type) /* in: signed or unsigned flag */ +{ + /* XXX this can be optimized on big-endian machines */ + + ullint ret; + uint i; + + if (unsigned_type || (src[0] & 0x80)) { + + ret = 0x0000000000000000ULL; + } else { + + ret = 0xFFFFFFFFFFFFFF00ULL; + } + + if (unsigned_type) { + + ret |= src[0]; + } else { + + ret |= src[0] ^ 0x80; + } + + for (i = 1; i < len; i++) { + ret <<= 8; + ret |= src[i]; + } + + return(ret); +} === added file 'storage/xtradb/include/mem0dbg.h' --- a/storage/xtradb/include/mem0dbg.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/mem0dbg.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,142 @@ +/***************************************************************************** + +Copyright (c) 1994, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +The memory management: the debug code. This is not a compilation module, +but is included in mem0mem.* ! + +Created 6/9/1994 Heikki Tuuri +*******************************************************/ + +/* In the debug version each allocated field is surrounded with +check fields whose sizes are given below */ + +#ifdef UNIV_MEM_DEBUG +#define MEM_FIELD_HEADER_SIZE ut_calc_align(2 * sizeof(ulint),\ + UNIV_MEM_ALIGNMENT) +#define MEM_FIELD_TRAILER_SIZE sizeof(ulint) +#else +#define MEM_FIELD_HEADER_SIZE 0 +#endif + + +/* Space needed when allocating for a user a field of +length N. The space is allocated only in multiples of +UNIV_MEM_ALIGNMENT. In the debug version there are also +check fields at the both ends of the field. */ +#ifdef UNIV_MEM_DEBUG +#define MEM_SPACE_NEEDED(N) ut_calc_align((N) + MEM_FIELD_HEADER_SIZE\ + + MEM_FIELD_TRAILER_SIZE, UNIV_MEM_ALIGNMENT) +#else +#define MEM_SPACE_NEEDED(N) ut_calc_align((N), UNIV_MEM_ALIGNMENT) +#endif + +#if defined UNIV_MEM_DEBUG || defined UNIV_DEBUG +/******************************************************************* +Checks a memory heap for consistency and prints the contents if requested. +Outputs the sum of sizes of buffers given to the user (only in +the debug version), the physical size of the heap and the number of +blocks in the heap. In case of error returns 0 as sizes and number +of blocks. */ +UNIV_INTERN +void +mem_heap_validate_or_print( +/*=======================*/ + mem_heap_t* heap, /* in: memory heap */ + byte* top, /* in: calculate and validate only until + this top pointer in the heap is reached, + if this pointer is NULL, ignored */ + ibool print, /* in: if TRUE, prints the contents + of the heap; works only in + the debug version */ + ibool* error, /* out: TRUE if error */ + ulint* us_size,/* out: allocated memory + (for the user) in the heap, + if a NULL pointer is passed as this + argument, it is ignored; in the + non-debug version this is always -1 */ + ulint* ph_size,/* out: physical size of the heap, + if a NULL pointer is passed as this + argument, it is ignored */ + ulint* n_blocks); /* out: number of blocks in the heap, + if a NULL pointer is passed as this + argument, it is ignored */ +/****************************************************************** +Validates the contents of a memory heap. */ +UNIV_INTERN +ibool +mem_heap_validate( +/*==============*/ + /* out: TRUE if ok */ + mem_heap_t* heap); /* in: memory heap */ +#endif /* UNIV_MEM_DEBUG || UNIV_DEBUG */ +#ifdef UNIV_DEBUG +/****************************************************************** +Checks that an object is a memory heap (or a block of it) */ +UNIV_INTERN +ibool +mem_heap_check( +/*===========*/ + /* out: TRUE if ok */ + mem_heap_t* heap); /* in: memory heap */ +#endif /* UNIV_DEBUG */ +#ifdef UNIV_MEM_DEBUG +/********************************************************************* +TRUE if no memory is currently allocated. */ +UNIV_INTERN +ibool +mem_all_freed(void); +/*===============*/ + /* out: TRUE if no heaps exist */ +/********************************************************************* +Validates the dynamic memory */ +UNIV_INTERN +ibool +mem_validate_no_assert(void); +/*=========================*/ + /* out: TRUE if error */ +/**************************************************************** +Validates the dynamic memory */ +UNIV_INTERN +ibool +mem_validate(void); +/*===============*/ + /* out: TRUE if ok */ +#endif /* UNIV_MEM_DEBUG */ +/**************************************************************** +Tries to find neigboring memory allocation blocks and dumps to stderr +the neighborhood of a given pointer. */ +UNIV_INTERN +void +mem_analyze_corruption( +/*===================*/ + void* ptr); /* in: pointer to place of possible corruption */ +/********************************************************************* +Prints information of dynamic memory usage and currently allocated memory +heaps or buffers. Can only be used in the debug version. */ +UNIV_INTERN +void +mem_print_info(void); +/*================*/ +/********************************************************************* +Prints information of dynamic memory usage and currently allocated memory +heaps or buffers since the last ..._print_info or..._print_new_info. */ +UNIV_INTERN +void +mem_print_new_info(void); +/*====================*/ === added file 'storage/xtradb/include/mem0dbg.ic' --- a/storage/xtradb/include/mem0dbg.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/mem0dbg.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,109 @@ +/***************************************************************************** + +Copyright (c) 1994, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/************************************************************************ +The memory management: the debug code. This is not an independent +compilation module but is included in mem0mem.*. + +Created 6/8/1994 Heikki Tuuri +*************************************************************************/ + +#ifdef UNIV_MEM_DEBUG +extern mutex_t mem_hash_mutex; +extern ulint mem_current_allocated_memory; + +/********************************************************************** +Initializes an allocated memory field in the debug version. */ +UNIV_INTERN +void +mem_field_init( +/*===========*/ + byte* buf, /* in: memory field */ + ulint n); /* in: how many bytes the user requested */ +/********************************************************************** +Erases an allocated memory field in the debug version. */ +UNIV_INTERN +void +mem_field_erase( +/*============*/ + byte* buf, /* in: memory field */ + ulint n); /* in: how many bytes the user requested */ +/******************************************************************* +Initializes a buffer to a random combination of hex BA and BE. +Used to initialize allocated memory. */ +UNIV_INTERN +void +mem_init_buf( +/*=========*/ + byte* buf, /* in: pointer to buffer */ + ulint n); /* in: length of buffer */ +/******************************************************************* +Initializes a buffer to a random combination of hex DE and AD. +Used to erase freed memory.*/ +UNIV_INTERN +void +mem_erase_buf( +/*==========*/ + byte* buf, /* in: pointer to buffer */ + ulint n); /* in: length of buffer */ +/******************************************************************* +Inserts a created memory heap to the hash table of +current allocated memory heaps. +Initializes the hash table when first called. */ +UNIV_INTERN +void +mem_hash_insert( +/*============*/ + mem_heap_t* heap, /* in: the created heap */ + const char* file_name, /* in: file name of creation */ + ulint line); /* in: line where created */ +/******************************************************************* +Removes a memory heap (which is going to be freed by the caller) +from the list of live memory heaps. Returns the size of the heap +in terms of how much memory in bytes was allocated for the user of +the heap (not the total space occupied by the heap). +Also validates the heap. +NOTE: This function does not free the storage occupied by the +heap itself, only the node in the list of heaps. */ +UNIV_INTERN +void +mem_hash_remove( +/*============*/ + mem_heap_t* heap, /* in: the heap to be freed */ + const char* file_name, /* in: file name of freeing */ + ulint line); /* in: line where freed */ + + +void +mem_field_header_set_len(byte* field, ulint len); + +ulint +mem_field_header_get_len(byte* field); + +void +mem_field_header_set_check(byte* field, ulint check); + +ulint +mem_field_header_get_check(byte* field); + +void +mem_field_trailer_set_check(byte* field, ulint check); + +ulint +mem_field_trailer_get_check(byte* field); +#endif /* UNIV_MEM_DEBUG */ === added file 'storage/xtradb/include/mem0mem.h' --- a/storage/xtradb/include/mem0mem.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/mem0mem.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,406 @@ +/***************************************************************************** + +Copyright (c) 1994, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +The memory management + +Created 6/9/1994 Heikki Tuuri +*******************************************************/ + +#ifndef mem0mem_h +#define mem0mem_h + +#include "univ.i" +#include "ut0mem.h" +#include "ut0byte.h" +#include "ut0ut.h" +#include "ut0rnd.h" +#include "sync0sync.h" +#include "ut0lst.h" +#include "mach0data.h" + +/* -------------------- MEMORY HEAPS ----------------------------- */ + +/* The info structure stored at the beginning of a heap block */ +typedef struct mem_block_info_struct mem_block_info_t; + +/* A block of a memory heap consists of the info structure +followed by an area of memory */ +typedef mem_block_info_t mem_block_t; + +/* A memory heap is a nonempty linear list of memory blocks */ +typedef mem_block_t mem_heap_t; + +/* Types of allocation for memory heaps: DYNAMIC means allocation from the +dynamic memory pool of the C compiler, BUFFER means allocation from the +buffer pool; the latter method is used for very big heaps */ + +#define MEM_HEAP_DYNAMIC 0 /* the most common type */ +#define MEM_HEAP_BUFFER 1 +#define MEM_HEAP_BTR_SEARCH 2 /* this flag can optionally be + ORed to MEM_HEAP_BUFFER, in which + case heap->free_block is used in + some cases for memory allocations, + and if it's NULL, the memory + allocation functions can return + NULL. */ + +/* The following start size is used for the first block in the memory heap if +the size is not specified, i.e., 0 is given as the parameter in the call of +create. The standard size is the maximum (payload) size of the blocks used for +allocations of small buffers. */ + +#define MEM_BLOCK_START_SIZE 64 +#define MEM_BLOCK_STANDARD_SIZE \ + (UNIV_PAGE_SIZE >= 16384 ? 8000 : MEM_MAX_ALLOC_IN_BUF) + +/* If a memory heap is allowed to grow into the buffer pool, the following +is the maximum size for a single allocated buffer: */ +#define MEM_MAX_ALLOC_IN_BUF (UNIV_PAGE_SIZE - 200) + +/********************************************************************** +Initializes the memory system. */ +UNIV_INTERN +void +mem_init( +/*=====*/ + ulint size); /* in: common pool size in bytes */ +/****************************************************************** +Use this macro instead of the corresponding function! Macro for memory +heap creation. */ + +#define mem_heap_create(N) mem_heap_create_func(\ + (N), MEM_HEAP_DYNAMIC, __FILE__, __LINE__) +/****************************************************************** +Use this macro instead of the corresponding function! Macro for memory +heap creation. */ + +#define mem_heap_create_in_buffer(N) mem_heap_create_func(\ + (N), MEM_HEAP_BUFFER, __FILE__, __LINE__) +/****************************************************************** +Use this macro instead of the corresponding function! Macro for memory +heap creation. */ + +#define mem_heap_create_in_btr_search(N) mem_heap_create_func(\ + (N), MEM_HEAP_BTR_SEARCH | MEM_HEAP_BUFFER,\ + __FILE__, __LINE__) + +/****************************************************************** +Use this macro instead of the corresponding function! Macro for memory +heap freeing. */ + +#define mem_heap_free(heap) mem_heap_free_func(\ + (heap), __FILE__, __LINE__) +/********************************************************************* +NOTE: Use the corresponding macros instead of this function. Creates a +memory heap. For debugging purposes, takes also the file name and line as +arguments. */ +UNIV_INLINE +mem_heap_t* +mem_heap_create_func( +/*=================*/ + /* out, own: memory heap, NULL if + did not succeed (only possible for + MEM_HEAP_BTR_SEARCH type heaps)*/ + ulint n, /* in: desired start block size, + this means that a single user buffer + of size n will fit in the block, + 0 creates a default size block */ + ulint type, /* in: heap type */ + const char* file_name, /* in: file name where created */ + ulint line); /* in: line where created */ +/********************************************************************* +NOTE: Use the corresponding macro instead of this function. Frees the space +occupied by a memory heap. In the debug version erases the heap memory +blocks. */ +UNIV_INLINE +void +mem_heap_free_func( +/*===============*/ + mem_heap_t* heap, /* in, own: heap to be freed */ + const char* file_name, /* in: file name where freed */ + ulint line); /* in: line where freed */ +/******************************************************************* +Allocates and zero-fills n bytes of memory from a memory heap. */ +UNIV_INLINE +void* +mem_heap_zalloc( +/*============*/ + /* out: allocated, zero-filled storage */ + mem_heap_t* heap, /* in: memory heap */ + ulint n); /* in: number of bytes; if the heap is allowed + to grow into the buffer pool, this must be + <= MEM_MAX_ALLOC_IN_BUF */ +/******************************************************************* +Allocates n bytes of memory from a memory heap. */ +UNIV_INLINE +void* +mem_heap_alloc( +/*===========*/ + /* out: allocated storage, NULL if did not + succeed (only possible for + MEM_HEAP_BTR_SEARCH type heaps) */ + mem_heap_t* heap, /* in: memory heap */ + ulint n); /* in: number of bytes; if the heap is allowed + to grow into the buffer pool, this must be + <= MEM_MAX_ALLOC_IN_BUF */ +/********************************************************************* +Returns a pointer to the heap top. */ +UNIV_INLINE +byte* +mem_heap_get_heap_top( +/*==================*/ + /* out: pointer to the heap top */ + mem_heap_t* heap); /* in: memory heap */ +/********************************************************************* +Frees the space in a memory heap exceeding the pointer given. The +pointer must have been acquired from mem_heap_get_heap_top. The first +memory block of the heap is not freed. */ +UNIV_INLINE +void +mem_heap_free_heap_top( +/*===================*/ + mem_heap_t* heap, /* in: heap from which to free */ + byte* old_top);/* in: pointer to old top of heap */ +/********************************************************************* +Empties a memory heap. The first memory block of the heap is not freed. */ +UNIV_INLINE +void +mem_heap_empty( +/*===========*/ + mem_heap_t* heap); /* in: heap to empty */ +/********************************************************************* +Returns a pointer to the topmost element in a memory heap. +The size of the element must be given. */ +UNIV_INLINE +void* +mem_heap_get_top( +/*=============*/ + /* out: pointer to the topmost element */ + mem_heap_t* heap, /* in: memory heap */ + ulint n); /* in: size of the topmost element */ +/********************************************************************* +Frees the topmost element in a memory heap. +The size of the element must be given. */ +UNIV_INLINE +void +mem_heap_free_top( +/*==============*/ + mem_heap_t* heap, /* in: memory heap */ + ulint n); /* in: size of the topmost element */ +/********************************************************************* +Returns the space in bytes occupied by a memory heap. */ +UNIV_INLINE +ulint +mem_heap_get_size( +/*==============*/ + mem_heap_t* heap); /* in: heap */ +/****************************************************************** +Use this macro instead of the corresponding function! +Macro for memory buffer allocation */ + +#define mem_zalloc(N) memset(mem_alloc(N), 0, (N)); + +#define mem_alloc(N) mem_alloc_func((N), NULL, __FILE__, __LINE__) +#define mem_alloc2(N,S) mem_alloc_func((N), (S), __FILE__, __LINE__) +/******************************************************************* +NOTE: Use the corresponding macro instead of this function. +Allocates a single buffer of memory from the dynamic memory of +the C compiler. Is like malloc of C. The buffer must be freed +with mem_free. */ +UNIV_INLINE +void* +mem_alloc_func( +/*===========*/ + /* out, own: free storage */ + ulint n, /* in: requested size in bytes */ + ulint* size, /* out: allocated size in bytes, + or NULL */ + const char* file_name, /* in: file name where created */ + ulint line); /* in: line where created */ + +/****************************************************************** +Use this macro instead of the corresponding function! +Macro for memory buffer freeing */ + +#define mem_free(PTR) mem_free_func((PTR), __FILE__, __LINE__) +/******************************************************************* +NOTE: Use the corresponding macro instead of this function. +Frees a single buffer of storage from +the dynamic memory of C compiler. Similar to free of C. */ +UNIV_INLINE +void +mem_free_func( +/*==========*/ + void* ptr, /* in, own: buffer to be freed */ + const char* file_name, /* in: file name where created */ + ulint line /* in: line where created */ +); + +/************************************************************************** +Duplicates a NUL-terminated string. */ +UNIV_INLINE +char* +mem_strdup( +/*=======*/ + /* out, own: a copy of the string, + must be deallocated with mem_free */ + const char* str); /* in: string to be copied */ +/************************************************************************** +Makes a NUL-terminated copy of a nonterminated string. */ +UNIV_INLINE +char* +mem_strdupl( +/*========*/ + /* out, own: a copy of the string, + must be deallocated with mem_free */ + const char* str, /* in: string to be copied */ + ulint len); /* in: length of str, in bytes */ + +/************************************************************************** +Duplicates a NUL-terminated string, allocated from a memory heap. */ +UNIV_INTERN +char* +mem_heap_strdup( +/*============*/ + /* out, own: a copy of the string */ + mem_heap_t* heap, /* in: memory heap where string is allocated */ + const char* str); /* in: string to be copied */ +/************************************************************************** +Makes a NUL-terminated copy of a nonterminated string, +allocated from a memory heap. */ +UNIV_INLINE +char* +mem_heap_strdupl( +/*=============*/ + /* out, own: a copy of the string */ + mem_heap_t* heap, /* in: memory heap where string is allocated */ + const char* str, /* in: string to be copied */ + ulint len); /* in: length of str, in bytes */ + +/************************************************************************** +Concatenate two strings and return the result, using a memory heap. */ +UNIV_INTERN +char* +mem_heap_strcat( +/*============*/ + /* out, own: the result */ + mem_heap_t* heap, /* in: memory heap where string is allocated */ + const char* s1, /* in: string 1 */ + const char* s2); /* in: string 2 */ + +/************************************************************************** +Duplicate a block of data, allocated from a memory heap. */ +UNIV_INTERN +void* +mem_heap_dup( +/*=========*/ + /* out, own: a copy of the data */ + mem_heap_t* heap, /* in: memory heap where copy is allocated */ + const void* data, /* in: data to be copied */ + ulint len); /* in: length of data, in bytes */ + +/************************************************************************** +Concatenate two memory blocks and return the result, using a memory heap. */ +UNIV_INTERN +void* +mem_heap_cat( +/*=========*/ + /* out, own: the result */ + mem_heap_t* heap, /* in: memory heap where result is allocated */ + const void* b1, /* in: block 1 */ + ulint len1, /* in: length of b1, in bytes */ + const void* b2, /* in: block 2 */ + ulint len2); /* in: length of b2, in bytes */ + +/******************************************************************** +A simple (s)printf replacement that dynamically allocates the space for the +formatted string from the given heap. This supports a very limited set of +the printf syntax: types 's' and 'u' and length modifier 'l' (which is +required for the 'u' type). */ +UNIV_INTERN +char* +mem_heap_printf( +/*============*/ + /* out: heap-allocated formatted string */ + mem_heap_t* heap, /* in: memory heap */ + const char* format, /* in: format string */ + ...) __attribute__ ((format (printf, 2, 3))); + +#ifdef MEM_PERIODIC_CHECK +/********************************************************************** +Goes through the list of all allocated mem blocks, checks their magic +numbers, and reports possible corruption. */ +UNIV_INTERN +void +mem_validate_all_blocks(void); +/*=========================*/ +#endif + +/*#######################################################################*/ + +/* The info header of a block in a memory heap */ + +struct mem_block_info_struct { + ulint magic_n;/* magic number for debugging */ + char file_name[8];/* file name where the mem heap was created */ + ulint line; /* line number where the mem heap was created */ + UT_LIST_BASE_NODE_T(mem_block_t) base; /* In the first block in the + the list this is the base node of the list of blocks; + in subsequent blocks this is undefined */ + UT_LIST_NODE_T(mem_block_t) list; /* This contains pointers to next + and prev in the list. The first block allocated + to the heap is also the first block in this list, + though it also contains the base node of the list. */ + ulint len; /* physical length of this block in bytes */ + ulint type; /* type of heap: MEM_HEAP_DYNAMIC, or + MEM_HEAP_BUF possibly ORed to MEM_HEAP_BTR_SEARCH */ + ulint free; /* offset in bytes of the first free position for + user data in the block */ + ulint start; /* the value of the struct field 'free' at the + creation of the block */ + void* free_block; + /* if the MEM_HEAP_BTR_SEARCH bit is set in type, + and this is the heap root, this can contain an + allocated buffer frame, which can be appended as a + free block to the heap, if we need more space; + otherwise, this is NULL */ + void* buf_block; + /* if this block has been allocated from the buffer + pool, this contains the buf_block_t handle; + otherwise, this is NULL */ +#ifdef MEM_PERIODIC_CHECK + UT_LIST_NODE_T(mem_block_t) mem_block_list; + /* List of all mem blocks allocated; protected + by the mem_comm_pool mutex */ +#endif +}; + +#define MEM_BLOCK_MAGIC_N 764741555 +#define MEM_FREED_BLOCK_MAGIC_N 547711122 + +/* Header size for a memory heap block */ +#define MEM_BLOCK_HEADER_SIZE ut_calc_align(sizeof(mem_block_info_t),\ + UNIV_MEM_ALIGNMENT) +#include "mem0dbg.h" + +#ifndef UNIV_NONINL +#include "mem0mem.ic" +#endif + +#endif === added file 'storage/xtradb/include/mem0mem.ic' --- a/storage/xtradb/include/mem0mem.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/mem0mem.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,646 @@ +/***************************************************************************** + +Copyright (c) 1994, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/************************************************************************ +The memory management + +Created 6/8/1994 Heikki Tuuri +*************************************************************************/ + +#include "mem0dbg.ic" + +#include "mem0pool.h" + +/******************************************************************* +Creates a memory heap block where data can be allocated. */ +UNIV_INTERN +mem_block_t* +mem_heap_create_block( +/*==================*/ + /* out, own: memory heap block, NULL if + did not succeed (only possible for + MEM_HEAP_BTR_SEARCH type heaps) */ + mem_heap_t* heap, /* in: memory heap or NULL if first block + should be created */ + ulint n, /* in: number of bytes needed for user data */ + ulint type, /* in: type of heap: MEM_HEAP_DYNAMIC or + MEM_HEAP_BUFFER */ + const char* file_name,/* in: file name where created */ + ulint line); /* in: line where created */ +/********************************************************************** +Frees a block from a memory heap. */ +UNIV_INTERN +void +mem_heap_block_free( +/*================*/ + mem_heap_t* heap, /* in: heap */ + mem_block_t* block); /* in: block to free */ +/********************************************************************** +Frees the free_block field from a memory heap. */ +UNIV_INTERN +void +mem_heap_free_block_free( +/*=====================*/ + mem_heap_t* heap); /* in: heap */ +/******************************************************************* +Adds a new block to a memory heap. */ +UNIV_INTERN +mem_block_t* +mem_heap_add_block( +/*===============*/ + /* out: created block, NULL if did not + succeed (only possible for + MEM_HEAP_BTR_SEARCH type heaps)*/ + mem_heap_t* heap, /* in: memory heap */ + ulint n); /* in: number of bytes user needs */ + +UNIV_INLINE +void +mem_block_set_len(mem_block_t* block, ulint len) +{ + ut_ad(len > 0); + + block->len = len; +} + +UNIV_INLINE +ulint +mem_block_get_len(mem_block_t* block) +{ + return(block->len); +} + +UNIV_INLINE +void +mem_block_set_type(mem_block_t* block, ulint type) +{ + ut_ad((type == MEM_HEAP_DYNAMIC) || (type == MEM_HEAP_BUFFER) + || (type == MEM_HEAP_BUFFER + MEM_HEAP_BTR_SEARCH)); + + block->type = type; +} + +UNIV_INLINE +ulint +mem_block_get_type(mem_block_t* block) +{ + return(block->type); +} + +UNIV_INLINE +void +mem_block_set_free(mem_block_t* block, ulint free) +{ + ut_ad(free > 0); + ut_ad(free <= mem_block_get_len(block)); + + block->free = free; +} + +UNIV_INLINE +ulint +mem_block_get_free(mem_block_t* block) +{ + return(block->free); +} + +UNIV_INLINE +void +mem_block_set_start(mem_block_t* block, ulint start) +{ + ut_ad(start > 0); + + block->start = start; +} + +UNIV_INLINE +ulint +mem_block_get_start(mem_block_t* block) +{ + return(block->start); +} + +/******************************************************************* +Allocates and zero-fills n bytes of memory from a memory heap. */ +UNIV_INLINE +void* +mem_heap_zalloc( +/*============*/ + /* out: allocated, zero-filled storage */ + mem_heap_t* heap, /* in: memory heap */ + ulint n) /* in: number of bytes; if the heap is allowed + to grow into the buffer pool, this must be + <= MEM_MAX_ALLOC_IN_BUF */ +{ + ut_ad(heap); + ut_ad(!(heap->type & MEM_HEAP_BTR_SEARCH)); + return(memset(mem_heap_alloc(heap, n), 0, n)); +} + +/******************************************************************* +Allocates n bytes of memory from a memory heap. */ +UNIV_INLINE +void* +mem_heap_alloc( +/*===========*/ + /* out: allocated storage, NULL if did not + succeed (only possible for + MEM_HEAP_BTR_SEARCH type heaps) */ + mem_heap_t* heap, /* in: memory heap */ + ulint n) /* in: number of bytes; if the heap is allowed + to grow into the buffer pool, this must be + <= MEM_MAX_ALLOC_IN_BUF */ +{ + mem_block_t* block; + void* buf; + ulint free; + + ut_ad(mem_heap_check(heap)); + + block = UT_LIST_GET_LAST(heap->base); + + ut_ad(!(block->type & MEM_HEAP_BUFFER) || (n <= MEM_MAX_ALLOC_IN_BUF)); + + /* Check if there is enough space in block. If not, create a new + block to the heap */ + + if (mem_block_get_len(block) + < mem_block_get_free(block) + MEM_SPACE_NEEDED(n)) { + + block = mem_heap_add_block(heap, n); + + if (block == NULL) { + + return(NULL); + } + } + + free = mem_block_get_free(block); + + buf = (byte*)block + free; + + mem_block_set_free(block, free + MEM_SPACE_NEEDED(n)); + +#ifdef UNIV_MEM_DEBUG + UNIV_MEM_ALLOC(buf, + n + MEM_FIELD_HEADER_SIZE + MEM_FIELD_TRAILER_SIZE); + + /* In the debug version write debugging info to the field */ + mem_field_init((byte*)buf, n); + + /* Advance buf to point at the storage which will be given to the + caller */ + buf = (byte*)buf + MEM_FIELD_HEADER_SIZE; + +#endif +#ifdef UNIV_SET_MEM_TO_ZERO + UNIV_MEM_ALLOC(buf, n); + memset(buf, '\0', n); +#endif + UNIV_MEM_ALLOC(buf, n); + return(buf); +} + +/********************************************************************* +Returns a pointer to the heap top. */ +UNIV_INLINE +byte* +mem_heap_get_heap_top( +/*==================*/ + /* out: pointer to the heap top */ + mem_heap_t* heap) /* in: memory heap */ +{ + mem_block_t* block; + byte* buf; + + ut_ad(mem_heap_check(heap)); + + block = UT_LIST_GET_LAST(heap->base); + + buf = (byte*)block + mem_block_get_free(block); + + return(buf); +} + +/********************************************************************* +Frees the space in a memory heap exceeding the pointer given. The +pointer must have been acquired from mem_heap_get_heap_top. The first +memory block of the heap is not freed. */ +UNIV_INLINE +void +mem_heap_free_heap_top( +/*===================*/ + mem_heap_t* heap, /* in: heap from which to free */ + byte* old_top)/* in: pointer to old top of heap */ +{ + mem_block_t* block; + mem_block_t* prev_block; +#ifdef UNIV_MEM_DEBUG + ibool error; + ulint total_size; + ulint size; +#endif + + ut_ad(mem_heap_check(heap)); + +#ifdef UNIV_MEM_DEBUG + + /* Validate the heap and get its total allocated size */ + mem_heap_validate_or_print(heap, NULL, FALSE, &error, &total_size, + NULL, NULL); + ut_a(!error); + + /* Get the size below top pointer */ + mem_heap_validate_or_print(heap, old_top, FALSE, &error, &size, NULL, + NULL); + ut_a(!error); + +#endif + + block = UT_LIST_GET_LAST(heap->base); + + while (block != NULL) { + if (((byte*)block + mem_block_get_free(block) >= old_top) + && ((byte*)block <= old_top)) { + /* Found the right block */ + + break; + } + + /* Store prev_block value before freeing the current block + (the current block will be erased in freeing) */ + + prev_block = UT_LIST_GET_PREV(list, block); + + mem_heap_block_free(heap, block); + + block = prev_block; + } + + ut_ad(block); + + /* Set the free field of block */ + mem_block_set_free(block, old_top - (byte*)block); + +#ifdef UNIV_MEM_DEBUG + ut_ad(mem_block_get_start(block) <= mem_block_get_free(block)); + + /* In the debug version erase block from top up */ + mem_erase_buf(old_top, (byte*)block + block->len - old_top); + + /* Update allocated memory count */ + mutex_enter(&mem_hash_mutex); + mem_current_allocated_memory -= (total_size - size); + mutex_exit(&mem_hash_mutex); +#else /* UNIV_MEM_DEBUG */ + UNIV_MEM_ASSERT_W(old_top, (byte*)block + block->len - old_top); +#endif /* UNIV_MEM_DEBUG */ + UNIV_MEM_ALLOC(old_top, (byte*)block + block->len - old_top); + + /* If free == start, we may free the block if it is not the first + one */ + + if ((heap != block) && (mem_block_get_free(block) + == mem_block_get_start(block))) { + mem_heap_block_free(heap, block); + } +} + +/********************************************************************* +Empties a memory heap. The first memory block of the heap is not freed. */ +UNIV_INLINE +void +mem_heap_empty( +/*===========*/ + mem_heap_t* heap) /* in: heap to empty */ +{ + mem_heap_free_heap_top(heap, (byte*)heap + mem_block_get_start(heap)); + + if (heap->free_block) { + mem_heap_free_block_free(heap); + } +} + +/********************************************************************* +Returns a pointer to the topmost element in a memory heap. The size of the +element must be given. */ +UNIV_INLINE +void* +mem_heap_get_top( +/*=============*/ + /* out: pointer to the topmost element */ + mem_heap_t* heap, /* in: memory heap */ + ulint n) /* in: size of the topmost element */ +{ + mem_block_t* block; + void* buf; + + ut_ad(mem_heap_check(heap)); + + block = UT_LIST_GET_LAST(heap->base); + + buf = (byte*)block + mem_block_get_free(block) - MEM_SPACE_NEEDED(n); + +#ifdef UNIV_MEM_DEBUG + ut_ad(mem_block_get_start(block) <=(ulint)((byte*)buf - (byte*)block)); + + /* In the debug version, advance buf to point at the storage which + was given to the caller in the allocation*/ + + buf = (byte*)buf + MEM_FIELD_HEADER_SIZE; + + /* Check that the field lengths agree */ + ut_ad(n == (ulint)mem_field_header_get_len(buf)); +#endif + + return(buf); +} + +/********************************************************************* +Frees the topmost element in a memory heap. The size of the element must be +given. */ +UNIV_INLINE +void +mem_heap_free_top( +/*==============*/ + mem_heap_t* heap, /* in: memory heap */ + ulint n) /* in: size of the topmost element */ +{ + mem_block_t* block; + + ut_ad(mem_heap_check(heap)); + + block = UT_LIST_GET_LAST(heap->base); + + /* Subtract the free field of block */ + mem_block_set_free(block, mem_block_get_free(block) + - MEM_SPACE_NEEDED(n)); + UNIV_MEM_ASSERT_W((byte*) block + mem_block_get_free(block), n); +#ifdef UNIV_MEM_DEBUG + + ut_ad(mem_block_get_start(block) <= mem_block_get_free(block)); + + /* In the debug version check the consistency, and erase field */ + mem_field_erase((byte*)block + mem_block_get_free(block), n); +#endif + + /* If free == start, we may free the block if it is not the first + one */ + + if ((heap != block) && (mem_block_get_free(block) + == mem_block_get_start(block))) { + mem_heap_block_free(heap, block); + } else { + /* Avoid a bogus UNIV_MEM_ASSERT_W() warning in a + subsequent invocation of mem_heap_free_top(). + Originally, this was UNIV_MEM_FREE(), to catch writes + to freed memory. */ + UNIV_MEM_ALLOC((byte*) block + mem_block_get_free(block), n); + } +} + +/********************************************************************* +NOTE: Use the corresponding macros instead of this function. Creates a +memory heap. For debugging purposes, takes also the file name and line as +argument. */ +UNIV_INLINE +mem_heap_t* +mem_heap_create_func( +/*=================*/ + /* out, own: memory heap, NULL if + did not succeed (only possible for + MEM_HEAP_BTR_SEARCH type heaps)*/ + ulint n, /* in: desired start block size, + this means that a single user buffer + of size n will fit in the block, + 0 creates a default size block */ + ulint type, /* in: heap type */ + const char* file_name, /* in: file name where created */ + ulint line) /* in: line where created */ +{ + mem_block_t* block; + + if (!n) { + n = MEM_BLOCK_START_SIZE; + } + + block = mem_heap_create_block(NULL, n, type, file_name, line); + + if (block == NULL) { + + return(NULL); + } + + UT_LIST_INIT(block->base); + + /* Add the created block itself as the first block in the list */ + UT_LIST_ADD_FIRST(list, block->base, block); + +#ifdef UNIV_MEM_DEBUG + + mem_hash_insert(block, file_name, line); + +#endif + + return(block); +} + +/********************************************************************* +NOTE: Use the corresponding macro instead of this function. Frees the space +occupied by a memory heap. In the debug version erases the heap memory +blocks. */ +UNIV_INLINE +void +mem_heap_free_func( +/*===============*/ + mem_heap_t* heap, /* in, own: heap to be freed */ + const char* file_name __attribute__((unused)), + /* in: file name where freed */ + ulint line __attribute__((unused))) +{ + mem_block_t* block; + mem_block_t* prev_block; + + ut_ad(mem_heap_check(heap)); + + block = UT_LIST_GET_LAST(heap->base); + +#ifdef UNIV_MEM_DEBUG + + /* In the debug version remove the heap from the hash table of heaps + and check its consistency */ + + mem_hash_remove(heap, file_name, line); + +#endif + + if (heap->free_block) { + mem_heap_free_block_free(heap); + } + + while (block != NULL) { + /* Store the contents of info before freeing current block + (it is erased in freeing) */ + + prev_block = UT_LIST_GET_PREV(list, block); + + mem_heap_block_free(heap, block); + + block = prev_block; + } +} + +/******************************************************************* +NOTE: Use the corresponding macro instead of this function. +Allocates a single buffer of memory from the dynamic memory of +the C compiler. Is like malloc of C. The buffer must be freed +with mem_free. */ +UNIV_INLINE +void* +mem_alloc_func( +/*===========*/ + /* out, own: free storage */ + ulint n, /* in: desired number of bytes */ + ulint* size, /* out: allocated size in bytes, + or NULL */ + const char* file_name, /* in: file name where created */ + ulint line) /* in: line where created */ +{ + mem_heap_t* heap; + void* buf; + + heap = mem_heap_create_func(n, MEM_HEAP_DYNAMIC, file_name, line); + + /* Note that as we created the first block in the heap big enough + for the buffer requested by the caller, the buffer will be in the + first block and thus we can calculate the pointer to the heap from + the pointer to the buffer when we free the memory buffer. */ + + if (UNIV_LIKELY_NULL(size)) { + /* Adjust the allocation to the actual size of the + memory block. */ + ulint m = mem_block_get_len(heap) + - mem_block_get_free(heap); +#ifdef UNIV_MEM_DEBUG + m -= MEM_FIELD_HEADER_SIZE + MEM_FIELD_TRAILER_SIZE; +#endif /* UNIV_MEM_DEBUG */ + ut_ad(m >= n); + *size = n = m; + } + + buf = mem_heap_alloc(heap, n); + + ut_a((byte*)heap == (byte*)buf - MEM_BLOCK_HEADER_SIZE + - MEM_FIELD_HEADER_SIZE); + return(buf); +} + +/******************************************************************* +NOTE: Use the corresponding macro instead of this function. Frees a single +buffer of storage from the dynamic memory of the C compiler. Similar to the +free of C. */ +UNIV_INLINE +void +mem_free_func( +/*==========*/ + void* ptr, /* in, own: buffer to be freed */ + const char* file_name, /* in: file name where created */ + ulint line /* in: line where created */ + ) +{ + mem_heap_t* heap; + + heap = (mem_heap_t*)((byte*)ptr - MEM_BLOCK_HEADER_SIZE + - MEM_FIELD_HEADER_SIZE); + mem_heap_free_func(heap, file_name, line); +} + +/********************************************************************* +Returns the space in bytes occupied by a memory heap. */ +UNIV_INLINE +ulint +mem_heap_get_size( +/*==============*/ + mem_heap_t* heap) /* in: heap */ +{ + mem_block_t* block; + ulint size = 0; + + ut_ad(mem_heap_check(heap)); + + block = heap; + + while (block != NULL) { + + size += mem_block_get_len(block); + block = UT_LIST_GET_NEXT(list, block); + } + + if (heap->free_block) { + size += UNIV_PAGE_SIZE; + } + + return(size); +} + +/************************************************************************** +Duplicates a NUL-terminated string. */ +UNIV_INLINE +char* +mem_strdup( +/*=======*/ + /* out, own: a copy of the string, + must be deallocated with mem_free */ + const char* str) /* in: string to be copied */ +{ + ulint len = strlen(str) + 1; + return((char*) memcpy(mem_alloc(len), str, len)); +} + +/************************************************************************** +Makes a NUL-terminated copy of a nonterminated string. */ +UNIV_INLINE +char* +mem_strdupl( +/*========*/ + /* out, own: a copy of the string, + must be deallocated with mem_free */ + const char* str, /* in: string to be copied */ + ulint len) /* in: length of str, in bytes */ +{ + char* s = (char*) mem_alloc(len + 1); + s[len] = 0; + return((char*) memcpy(s, str, len)); +} + +/************************************************************************** +Makes a NUL-terminated copy of a nonterminated string, +allocated from a memory heap. */ +UNIV_INLINE +char* +mem_heap_strdupl( +/*=============*/ + /* out, own: a copy of the string */ + mem_heap_t* heap, /* in: memory heap where string is allocated */ + const char* str, /* in: string to be copied */ + ulint len) /* in: length of str, in bytes */ +{ + char* s = (char*) mem_heap_alloc(heap, len + 1); + s[len] = 0; + return((char*) memcpy(s, str, len)); +} === added file 'storage/xtradb/include/mem0pool.h' --- a/storage/xtradb/include/mem0pool.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/mem0pool.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,126 @@ +/***************************************************************************** + +Copyright (c) 1994, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +The lowest-level memory management + +Created 6/9/1994 Heikki Tuuri +*******************************************************/ + +#ifndef mem0pool_h +#define mem0pool_h + +#include "univ.i" +#include "os0file.h" +#include "ut0lst.h" + +typedef struct mem_area_struct mem_area_t; +typedef struct mem_pool_struct mem_pool_t; + +/* The common memory pool */ +extern mem_pool_t* mem_comm_pool; + +/* Memory area header */ + +struct mem_area_struct{ + ulint size_and_free; /* memory area size is obtained by + anding with ~MEM_AREA_FREE; area in + a free list if ANDing with + MEM_AREA_FREE results in nonzero */ + UT_LIST_NODE_T(mem_area_t) + free_list; /* free list node */ +}; + +/* Each memory area takes this many extra bytes for control information */ +#define MEM_AREA_EXTRA_SIZE (ut_calc_align(sizeof(struct mem_area_struct),\ + UNIV_MEM_ALIGNMENT)) + +/************************************************************************ +Creates a memory pool. */ +UNIV_INTERN +mem_pool_t* +mem_pool_create( +/*============*/ + /* out: memory pool */ + ulint size); /* in: pool size in bytes */ +/************************************************************************ +Allocates memory from a pool. NOTE: This low-level function should only be +used in mem0mem.*! */ +UNIV_INTERN +void* +mem_area_alloc( +/*===========*/ + /* out, own: allocated memory buffer */ + ulint* psize, /* in: requested size in bytes; for optimum + space usage, the size should be a power of 2 + minus MEM_AREA_EXTRA_SIZE; + out: allocated size in bytes (greater than + or equal to the requested size) */ + mem_pool_t* pool); /* in: memory pool */ +/************************************************************************ +Frees memory to a pool. */ +UNIV_INTERN +void +mem_area_free( +/*==========*/ + void* ptr, /* in, own: pointer to allocated memory + buffer */ + mem_pool_t* pool); /* in: memory pool */ +/************************************************************************ +Returns the amount of reserved memory. */ +UNIV_INTERN +ulint +mem_pool_get_reserved( +/*==================*/ + /* out: reserved mmeory in bytes */ + mem_pool_t* pool); /* in: memory pool */ +/************************************************************************ +Reserves the mem pool mutex. */ +UNIV_INTERN +void +mem_pool_mutex_enter(void); +/*======================*/ +/************************************************************************ +Releases the mem pool mutex. */ +UNIV_INTERN +void +mem_pool_mutex_exit(void); +/*=====================*/ +/************************************************************************ +Validates a memory pool. */ +UNIV_INTERN +ibool +mem_pool_validate( +/*==============*/ + /* out: TRUE if ok */ + mem_pool_t* pool); /* in: memory pool */ +/************************************************************************ +Prints info of a memory pool. */ +UNIV_INTERN +void +mem_pool_print_info( +/*================*/ + FILE* outfile,/* in: output file to write to */ + mem_pool_t* pool); /* in: memory pool */ + + +#ifndef UNIV_NONINL +#include "mem0pool.ic" +#endif + +#endif === added file 'storage/xtradb/include/mem0pool.ic' --- a/storage/xtradb/include/mem0pool.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/mem0pool.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,23 @@ +/***************************************************************************** + +Copyright (c) 1994, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/************************************************************************ +The lowest-level memory management + +Created 6/8/1994 Heikki Tuuri +*************************************************************************/ === added file 'storage/xtradb/include/mtr0log.h' --- a/storage/xtradb/include/mtr0log.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/mtr0log.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,247 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Mini-transaction logging routines + +Created 12/7/1995 Heikki Tuuri +*******************************************************/ + +#ifndef mtr0log_h +#define mtr0log_h + +#include "univ.i" +#include "mtr0mtr.h" +#include "dict0types.h" + +/************************************************************ +Writes 1 - 4 bytes to a file page buffered in the buffer pool. +Writes the corresponding log record to the mini-transaction log. */ +UNIV_INTERN +void +mlog_write_ulint( +/*=============*/ + byte* ptr, /* in: pointer where to write */ + ulint val, /* in: value to write */ + byte type, /* in: MLOG_1BYTE, MLOG_2BYTES, MLOG_4BYTES */ + mtr_t* mtr); /* in: mini-transaction handle */ +/************************************************************ +Writes 8 bytes to a file page buffered in the buffer pool. +Writes the corresponding log record to the mini-transaction log. */ +UNIV_INTERN +void +mlog_write_dulint( +/*==============*/ + byte* ptr, /* in: pointer where to write */ + dulint val, /* in: value to write */ + mtr_t* mtr); /* in: mini-transaction handle */ +/************************************************************ +Writes a string to a file page buffered in the buffer pool. Writes the +corresponding log record to the mini-transaction log. */ +UNIV_INTERN +void +mlog_write_string( +/*==============*/ + byte* ptr, /* in: pointer where to write */ + const byte* str, /* in: string to write */ + ulint len, /* in: string length */ + mtr_t* mtr); /* in: mini-transaction handle */ +/************************************************************ +Logs a write of a string to a file page buffered in the buffer pool. +Writes the corresponding log record to the mini-transaction log. */ +UNIV_INTERN +void +mlog_log_string( +/*============*/ + byte* ptr, /* in: pointer written to */ + ulint len, /* in: string length */ + mtr_t* mtr); /* in: mini-transaction handle */ +/************************************************************ +Writes initial part of a log record consisting of one-byte item +type and four-byte space and page numbers. */ +UNIV_INTERN +void +mlog_write_initial_log_record( +/*==========================*/ + const byte* ptr, /* in: pointer to (inside) a buffer + frame holding the file page where + modification is made */ + byte type, /* in: log item type: MLOG_1BYTE, ... */ + mtr_t* mtr); /* in: mini-transaction handle */ +/************************************************************ +Writes a log record about an .ibd file create/delete/rename. */ +UNIV_INLINE +byte* +mlog_write_initial_log_record_for_file_op( +/*======================================*/ + /* out: new value of log_ptr */ + ulint type, /* in: MLOG_FILE_CREATE, MLOG_FILE_DELETE, or + MLOG_FILE_RENAME */ + ulint space_id,/* in: space id, if applicable */ + ulint page_no,/* in: page number (not relevant currently) */ + byte* log_ptr,/* in: pointer to mtr log which has been opened */ + mtr_t* mtr); /* in: mtr */ +/************************************************************ +Catenates 1 - 4 bytes to the mtr log. */ +UNIV_INLINE +void +mlog_catenate_ulint( +/*================*/ + mtr_t* mtr, /* in: mtr */ + ulint val, /* in: value to write */ + ulint type); /* in: MLOG_1BYTE, MLOG_2BYTES, MLOG_4BYTES */ +/************************************************************ +Catenates n bytes to the mtr log. */ +UNIV_INTERN +void +mlog_catenate_string( +/*=================*/ + mtr_t* mtr, /* in: mtr */ + const byte* str, /* in: string to write */ + ulint len); /* in: string length */ +/************************************************************ +Catenates a compressed ulint to mlog. */ +UNIV_INLINE +void +mlog_catenate_ulint_compressed( +/*===========================*/ + mtr_t* mtr, /* in: mtr */ + ulint val); /* in: value to write */ +/************************************************************ +Catenates a compressed dulint to mlog. */ +UNIV_INLINE +void +mlog_catenate_dulint_compressed( +/*============================*/ + mtr_t* mtr, /* in: mtr */ + dulint val); /* in: value to write */ +/************************************************************ +Opens a buffer to mlog. It must be closed with mlog_close. */ +UNIV_INLINE +byte* +mlog_open( +/*======*/ + /* out: buffer, NULL if log mode MTR_LOG_NONE */ + mtr_t* mtr, /* in: mtr */ + ulint size); /* in: buffer size in bytes; MUST be + smaller than DYN_ARRAY_DATA_SIZE! */ +/************************************************************ +Closes a buffer opened to mlog. */ +UNIV_INLINE +void +mlog_close( +/*=======*/ + mtr_t* mtr, /* in: mtr */ + byte* ptr); /* in: buffer space from ptr up was not used */ +/************************************************************ +Writes the initial part of a log record (3..11 bytes). +If the implementation of this function is changed, all +size parameters to mlog_open() should be adjusted accordingly! */ +UNIV_INLINE +byte* +mlog_write_initial_log_record_fast( +/*===============================*/ + /* out: new value of log_ptr */ + const byte* ptr, /* in: pointer to (inside) a buffer + frame holding the file page where + modification is made */ + byte type, /* in: log item type: MLOG_1BYTE, ... */ + byte* log_ptr,/* in: pointer to mtr log which has + been opened */ + mtr_t* mtr); /* in: mtr */ +/************************************************************ +Parses an initial log record written by mlog_write_initial_log_record. */ +UNIV_INTERN +byte* +mlog_parse_initial_log_record( +/*==========================*/ + /* out: parsed record end, NULL if not a complete + record */ + byte* ptr, /* in: buffer */ + byte* end_ptr,/* in: buffer end */ + byte* type, /* out: log record type: MLOG_1BYTE, ... */ + ulint* space, /* out: space id */ + ulint* page_no);/* out: page number */ +/************************************************************ +Parses a log record written by mlog_write_ulint or mlog_write_dulint. */ +UNIV_INTERN +byte* +mlog_parse_nbytes( +/*==============*/ + /* out: parsed record end, NULL if not a complete + record */ + ulint type, /* in: log record type: MLOG_1BYTE, ... */ + byte* ptr, /* in: buffer */ + byte* end_ptr,/* in: buffer end */ + byte* page, /* in: page where to apply the log record, or NULL */ + void* page_zip);/* in/out: compressed page, or NULL */ +/************************************************************ +Parses a log record written by mlog_write_string. */ +UNIV_INTERN +byte* +mlog_parse_string( +/*==============*/ + /* out: parsed record end, NULL if not a complete + record */ + byte* ptr, /* in: buffer */ + byte* end_ptr,/* in: buffer end */ + byte* page, /* in: page where to apply the log record, or NULL */ + void* page_zip);/* in/out: compressed page, or NULL */ + + +/************************************************************ +Opens a buffer for mlog, writes the initial log record and, +if needed, the field lengths of an index. Reserves space +for further log entries. The log entry must be closed with +mtr_close(). */ +UNIV_INTERN +byte* +mlog_open_and_write_index( +/*======================*/ + /* out: buffer, NULL if log mode + MTR_LOG_NONE */ + mtr_t* mtr, /* in: mtr */ + byte* rec, /* in: index record or page */ + dict_index_t* index, /* in: record descriptor */ + byte type, /* in: log item type */ + ulint size); /* in: requested buffer size in bytes + (if 0, calls mlog_close() and returns NULL) */ + +/************************************************************ +Parses a log record written by mlog_open_and_write_index. */ +UNIV_INTERN +byte* +mlog_parse_index( +/*=============*/ + /* out: parsed record end, + NULL if not a complete record */ + byte* ptr, /* in: buffer */ + byte* end_ptr,/* in: buffer end */ + /* out: new value of log_ptr */ + ibool comp, /* in: TRUE=compact record format */ + dict_index_t** index); /* out, own: dummy index */ + +/* Insert, update, and maybe other functions may use this value to define an +extra mlog buffer size for variable size data */ +#define MLOG_BUF_MARGIN 256 + +#ifndef UNIV_NONINL +#include "mtr0log.ic" +#endif + +#endif === added file 'storage/xtradb/include/mtr0log.ic' --- a/storage/xtradb/include/mtr0log.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/mtr0log.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,247 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Mini-transaction logging routines + +Created 12/7/1995 Heikki Tuuri +*******************************************************/ + +#include "mach0data.h" +#include "ut0lst.h" +#include "buf0buf.h" + +/************************************************************ +Opens a buffer to mlog. It must be closed with mlog_close. */ +UNIV_INLINE +byte* +mlog_open( +/*======*/ + /* out: buffer, NULL if log mode MTR_LOG_NONE */ + mtr_t* mtr, /* in: mtr */ + ulint size) /* in: buffer size in bytes; MUST be + smaller than DYN_ARRAY_DATA_SIZE! */ +{ + dyn_array_t* mlog; + + mtr->modifications = TRUE; + + if (mtr_get_log_mode(mtr) == MTR_LOG_NONE) { + + return(NULL); + } + + mlog = &(mtr->log); + + return(dyn_array_open(mlog, size)); +} + +/************************************************************ +Closes a buffer opened to mlog. */ +UNIV_INLINE +void +mlog_close( +/*=======*/ + mtr_t* mtr, /* in: mtr */ + byte* ptr) /* in: buffer space from ptr up was not used */ +{ + dyn_array_t* mlog; + + ut_ad(mtr_get_log_mode(mtr) != MTR_LOG_NONE); + + mlog = &(mtr->log); + + dyn_array_close(mlog, ptr); +} + +/************************************************************ +Catenates 1 - 4 bytes to the mtr log. The value is not compressed. */ +UNIV_INLINE +void +mlog_catenate_ulint( +/*================*/ + mtr_t* mtr, /* in: mtr */ + ulint val, /* in: value to write */ + ulint type) /* in: MLOG_1BYTE, MLOG_2BYTES, MLOG_4BYTES */ +{ + dyn_array_t* mlog; + byte* ptr; + + if (mtr_get_log_mode(mtr) == MTR_LOG_NONE) { + + return; + } + + mlog = &(mtr->log); + +#if MLOG_1BYTE != 1 +# error "MLOG_1BYTE != 1" +#endif +#if MLOG_2BYTES != 2 +# error "MLOG_2BYTES != 2" +#endif +#if MLOG_4BYTES != 4 +# error "MLOG_4BYTES != 4" +#endif +#if MLOG_8BYTES != 8 +# error "MLOG_8BYTES != 8" +#endif + ptr = (byte*) dyn_array_push(mlog, type); + + if (type == MLOG_4BYTES) { + mach_write_to_4(ptr, val); + } else if (type == MLOG_2BYTES) { + mach_write_to_2(ptr, val); + } else { + ut_ad(type == MLOG_1BYTE); + mach_write_to_1(ptr, val); + } +} + +/************************************************************ +Catenates a compressed ulint to mlog. */ +UNIV_INLINE +void +mlog_catenate_ulint_compressed( +/*===========================*/ + mtr_t* mtr, /* in: mtr */ + ulint val) /* in: value to write */ +{ + byte* log_ptr; + + log_ptr = mlog_open(mtr, 10); + + /* If no logging is requested, we may return now */ + if (log_ptr == NULL) { + + return; + } + + log_ptr += mach_write_compressed(log_ptr, val); + + mlog_close(mtr, log_ptr); +} + +/************************************************************ +Catenates a compressed dulint to mlog. */ +UNIV_INLINE +void +mlog_catenate_dulint_compressed( +/*============================*/ + mtr_t* mtr, /* in: mtr */ + dulint val) /* in: value to write */ +{ + byte* log_ptr; + + log_ptr = mlog_open(mtr, 15); + + /* If no logging is requested, we may return now */ + if (log_ptr == NULL) { + + return; + } + + log_ptr += mach_dulint_write_compressed(log_ptr, val); + + mlog_close(mtr, log_ptr); +} + +/************************************************************ +Writes the initial part of a log record (3..11 bytes). +If the implementation of this function is changed, all +size parameters to mlog_open() should be adjusted accordingly! */ +UNIV_INLINE +byte* +mlog_write_initial_log_record_fast( +/*===============================*/ + /* out: new value of log_ptr */ + const byte* ptr, /* in: pointer to (inside) a buffer + frame holding the file page where + modification is made */ + byte type, /* in: log item type: MLOG_1BYTE, ... */ + byte* log_ptr,/* in: pointer to mtr log which has + been opened */ + mtr_t* mtr) /* in: mtr */ +{ +#ifdef UNIV_DEBUG + buf_block_t* block; +#endif + const byte* page; + ulint space; + ulint offset; + + ut_ad(mtr_memo_contains_page(mtr, ptr, MTR_MEMO_PAGE_X_FIX)); + ut_ad(type <= MLOG_BIGGEST_TYPE); + ut_ad(ptr && log_ptr); + + page = (const byte*) ut_align_down(ptr, UNIV_PAGE_SIZE); + space = mach_read_from_4(page + FIL_PAGE_ARCH_LOG_NO_OR_SPACE_ID); + offset = mach_read_from_4(page + FIL_PAGE_OFFSET); + + mach_write_to_1(log_ptr, type); + log_ptr++; + log_ptr += mach_write_compressed(log_ptr, space); + log_ptr += mach_write_compressed(log_ptr, offset); + + mtr->n_log_recs++; + +#ifdef UNIV_LOG_DEBUG + fprintf(stderr, + "Adding to mtr log record type %lu space %lu page no %lu\n", + (ulong) type, space, offset); +#endif + +#ifdef UNIV_DEBUG + /* We now assume that all x-latched pages have been modified! */ + block = (buf_block_t*) buf_block_align(ptr); + + if (!mtr_memo_contains(mtr, block, MTR_MEMO_MODIFY)) { + + mtr_memo_push(mtr, block, MTR_MEMO_MODIFY); + } +#endif + return(log_ptr); +} + +/************************************************************ +Writes a log record about an .ibd file create/delete/rename. */ +UNIV_INLINE +byte* +mlog_write_initial_log_record_for_file_op( +/*======================================*/ + /* out: new value of log_ptr */ + ulint type, /* in: MLOG_FILE_CREATE, MLOG_FILE_DELETE, or + MLOG_FILE_RENAME */ + ulint space_id,/* in: space id, if applicable */ + ulint page_no,/* in: page number (not relevant currently) */ + byte* log_ptr,/* in: pointer to mtr log which has been opened */ + mtr_t* mtr) /* in: mtr */ +{ + ut_ad(log_ptr); + + mach_write_to_1(log_ptr, type); + log_ptr++; + + /* We write dummy space id and page number */ + log_ptr += mach_write_compressed(log_ptr, space_id); + log_ptr += mach_write_compressed(log_ptr, page_no); + + mtr->n_log_recs++; + + return(log_ptr); +} === added file 'storage/xtradb/include/mtr0mtr.h' --- a/storage/xtradb/include/mtr0mtr.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/mtr0mtr.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,380 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Mini-transaction buffer + +Created 11/26/1995 Heikki Tuuri +*******************************************************/ + +#ifndef mtr0mtr_h +#define mtr0mtr_h + +#include "univ.i" +#include "mem0mem.h" +#include "dyn0dyn.h" +#include "buf0types.h" +#include "sync0rw.h" +#include "ut0byte.h" +#include "mtr0types.h" +#include "page0types.h" + +/* Logging modes for a mini-transaction */ +#define MTR_LOG_ALL 21 /* default mode: log all operations + modifying disk-based data */ +#define MTR_LOG_NONE 22 /* log no operations */ +/*#define MTR_LOG_SPACE 23 */ /* log only operations modifying + file space page allocation data + (operations in fsp0fsp.* ) */ +#define MTR_LOG_SHORT_INSERTS 24 /* inserts are logged in a shorter + form */ + +/* Types for the mlock objects to store in the mtr memo; NOTE that the +first 3 values must be RW_S_LATCH, RW_X_LATCH, RW_NO_LATCH */ +#define MTR_MEMO_PAGE_S_FIX RW_S_LATCH +#define MTR_MEMO_PAGE_X_FIX RW_X_LATCH +#define MTR_MEMO_BUF_FIX RW_NO_LATCH +#define MTR_MEMO_MODIFY 54 +#define MTR_MEMO_S_LOCK 55 +#define MTR_MEMO_X_LOCK 56 + +/* Log item types: we have made them to be of the type 'byte' +for the compiler to warn if val and type parameters are switched +in a call to mlog_write_ulint. NOTE! For 1 - 8 bytes, the +flag value must give the length also! */ +#define MLOG_SINGLE_REC_FLAG 128 /* if the mtr contains only + one log record for one page, + i.e., write_initial_log_record + has been called only once, + this flag is ORed to the type + of that first log record */ +#define MLOG_1BYTE (1) /* one byte is written */ +#define MLOG_2BYTES (2) /* 2 bytes ... */ +#define MLOG_4BYTES (4) /* 4 bytes ... */ +#define MLOG_8BYTES (8) /* 8 bytes ... */ +#define MLOG_REC_INSERT ((byte)9) /* record insert */ +#define MLOG_REC_CLUST_DELETE_MARK ((byte)10) /* mark clustered index record + deleted */ +#define MLOG_REC_SEC_DELETE_MARK ((byte)11) /* mark secondary index record + deleted */ +#define MLOG_REC_UPDATE_IN_PLACE ((byte)13) /* update of a record, + preserves record field sizes */ +#define MLOG_REC_DELETE ((byte)14) /* delete a record from a + page */ +#define MLOG_LIST_END_DELETE ((byte)15) /* delete record list end on + index page */ +#define MLOG_LIST_START_DELETE ((byte)16) /* delete record list start on + index page */ +#define MLOG_LIST_END_COPY_CREATED ((byte)17) /* copy record list end to a + new created index page */ +#define MLOG_PAGE_REORGANIZE ((byte)18) /* reorganize an index page */ +#define MLOG_PAGE_CREATE ((byte)19) /* create an index page */ +#define MLOG_UNDO_INSERT ((byte)20) /* insert entry in an undo + log */ +#define MLOG_UNDO_ERASE_END ((byte)21) /* erase an undo log + page end */ +#define MLOG_UNDO_INIT ((byte)22) /* initialize a page in an + undo log */ +#define MLOG_UNDO_HDR_DISCARD ((byte)23) /* discard an update undo log + header */ +#define MLOG_UNDO_HDR_REUSE ((byte)24) /* reuse an insert undo log + header */ +#define MLOG_UNDO_HDR_CREATE ((byte)25) /* create an undo log header */ +#define MLOG_REC_MIN_MARK ((byte)26) /* mark an index record as the + predefined minimum record */ +#define MLOG_IBUF_BITMAP_INIT ((byte)27) /* initialize an ibuf bitmap + page */ +/*#define MLOG_FULL_PAGE ((byte)28) full contents of a page */ +#define MLOG_INIT_FILE_PAGE ((byte)29) /* this means that a file page + is taken into use and the prior + contents of the page should be + ignored: in recovery we must + not trust the lsn values stored + to the file page */ +#define MLOG_WRITE_STRING ((byte)30) /* write a string to a page */ +#define MLOG_MULTI_REC_END ((byte)31) /* if a single mtr writes + log records for several pages, + this log record ends the + sequence of these records */ +#define MLOG_DUMMY_RECORD ((byte)32) /* dummy log record used to + pad a log block full */ +#define MLOG_FILE_CREATE ((byte)33) /* log record about an .ibd + file creation */ +#define MLOG_FILE_RENAME ((byte)34) /* log record about an .ibd + file rename */ +#define MLOG_FILE_DELETE ((byte)35) /* log record about an .ibd + file deletion */ +#define MLOG_COMP_REC_MIN_MARK ((byte)36) /* mark a compact index record + as the predefined minimum + record */ +#define MLOG_COMP_PAGE_CREATE ((byte)37) /* create a compact + index page */ +#define MLOG_COMP_REC_INSERT ((byte)38) /* compact record insert */ +#define MLOG_COMP_REC_CLUST_DELETE_MARK ((byte)39) + /* mark compact clustered index + record deleted */ +#define MLOG_COMP_REC_SEC_DELETE_MARK ((byte)40)/* mark compact secondary index + record deleted; this log + record type is redundant, as + MLOG_REC_SEC_DELETE_MARK is + independent of the record + format. */ +#define MLOG_COMP_REC_UPDATE_IN_PLACE ((byte)41)/* update of a compact record, + preserves record field sizes */ +#define MLOG_COMP_REC_DELETE ((byte)42) /* delete a compact record + from a page */ +#define MLOG_COMP_LIST_END_DELETE ((byte)43) /* delete compact record list + end on index page */ +#define MLOG_COMP_LIST_START_DELETE ((byte)44) /* delete compact record list + start on index page */ +#define MLOG_COMP_LIST_END_COPY_CREATED ((byte)45) + /* copy compact record list end + to a new created index page */ +#define MLOG_COMP_PAGE_REORGANIZE ((byte)46) /* reorganize an index page */ +#define MLOG_FILE_CREATE2 ((byte)47) /* log record about creating + an .ibd file, with format */ +#define MLOG_ZIP_WRITE_NODE_PTR ((byte)48) /* write the node pointer of + a record on a compressed + non-leaf B-tree page */ +#define MLOG_ZIP_WRITE_BLOB_PTR ((byte)49) /* write the BLOB pointer + of an externally stored column + on a compressed page */ +#define MLOG_ZIP_WRITE_HEADER ((byte)50) /* write to compressed page + header */ +#define MLOG_ZIP_PAGE_COMPRESS ((byte)51) /* compress an index page */ +#define MLOG_BIGGEST_TYPE ((byte)51) /* biggest value (used in + asserts) */ + +/******************************************************************* +Starts a mini-transaction and creates a mini-transaction handle +and buffer in the memory buffer given by the caller. */ +UNIV_INLINE +mtr_t* +mtr_start( +/*======*/ + /* out: mtr buffer which also acts as + the mtr handle */ + mtr_t* mtr); /* in: memory buffer for the mtr buffer */ +/******************************************************************* +Commits a mini-transaction. */ +UNIV_INTERN +void +mtr_commit( +/*=======*/ + mtr_t* mtr); /* in: mini-transaction */ +/************************************************************** +Sets and returns a savepoint in mtr. */ +UNIV_INLINE +ulint +mtr_set_savepoint( +/*==============*/ + /* out: savepoint */ + mtr_t* mtr); /* in: mtr */ +/************************************************************** +Releases the latches stored in an mtr memo down to a savepoint. +NOTE! The mtr must not have made changes to buffer pages after the +savepoint, as these can be handled only by mtr_commit. */ +UNIV_INTERN +void +mtr_rollback_to_savepoint( +/*======================*/ + mtr_t* mtr, /* in: mtr */ + ulint savepoint); /* in: savepoint */ +/************************************************************** +Releases the (index tree) s-latch stored in an mtr memo after a +savepoint. */ +UNIV_INLINE +void +mtr_release_s_latch_at_savepoint( +/*=============================*/ + mtr_t* mtr, /* in: mtr */ + ulint savepoint, /* in: savepoint */ + rw_lock_t* lock); /* in: latch to release */ +/******************************************************************* +Gets the logging mode of a mini-transaction. */ +UNIV_INLINE +ulint +mtr_get_log_mode( +/*=============*/ + /* out: logging mode: MTR_LOG_NONE, ... */ + mtr_t* mtr); /* in: mtr */ +/******************************************************************* +Changes the logging mode of a mini-transaction. */ +UNIV_INLINE +ulint +mtr_set_log_mode( +/*=============*/ + /* out: old mode */ + mtr_t* mtr, /* in: mtr */ + ulint mode); /* in: logging mode: MTR_LOG_NONE, ... */ +/************************************************************ +Reads 1 - 4 bytes from a file page buffered in the buffer pool. */ +UNIV_INTERN +ulint +mtr_read_ulint( +/*===========*/ + /* out: value read */ + const byte* ptr, /* in: pointer from where to read */ + ulint type, /* in: MLOG_1BYTE, MLOG_2BYTES, MLOG_4BYTES */ + mtr_t* mtr); /* in: mini-transaction handle */ +/************************************************************ +Reads 8 bytes from a file page buffered in the buffer pool. */ +UNIV_INTERN +dulint +mtr_read_dulint( +/*============*/ + /* out: value read */ + const byte* ptr, /* in: pointer from where to read */ + mtr_t* mtr); /* in: mini-transaction handle */ +/************************************************************************* +This macro locks an rw-lock in s-mode. */ +#define mtr_s_lock(B, MTR) mtr_s_lock_func((B), __FILE__, __LINE__,\ + (MTR)) +/************************************************************************* +This macro locks an rw-lock in x-mode. */ +#define mtr_x_lock(B, MTR) mtr_x_lock_func((B), __FILE__, __LINE__,\ + (MTR)) +/************************************************************************* +NOTE! Use the macro above! +Locks a lock in s-mode. */ +UNIV_INLINE +void +mtr_s_lock_func( +/*============*/ + rw_lock_t* lock, /* in: rw-lock */ + const char* file, /* in: file name */ + ulint line, /* in: line number */ + mtr_t* mtr); /* in: mtr */ +/************************************************************************* +NOTE! Use the macro above! +Locks a lock in x-mode. */ +UNIV_INLINE +void +mtr_x_lock_func( +/*============*/ + rw_lock_t* lock, /* in: rw-lock */ + const char* file, /* in: file name */ + ulint line, /* in: line number */ + mtr_t* mtr); /* in: mtr */ + +/******************************************************* +Releases an object in the memo stack. */ +UNIV_INTERN +void +mtr_memo_release( +/*=============*/ + mtr_t* mtr, /* in: mtr */ + void* object, /* in: object */ + ulint type); /* in: object type: MTR_MEMO_S_LOCK, ... */ +#ifdef UNIV_DEBUG +/************************************************************** +Checks if memo contains the given item. */ +UNIV_INLINE +ibool +mtr_memo_contains( +/*==============*/ + /* out: TRUE if contains */ + mtr_t* mtr, /* in: mtr */ + const void* object, /* in: object to search */ + ulint type); /* in: type of object */ + +/************************************************************** +Checks if memo contains the given page. */ +UNIV_INTERN +ibool +mtr_memo_contains_page( +/*===================*/ + /* out: TRUE if contains */ + mtr_t* mtr, /* in: mtr */ + const byte* ptr, /* in: pointer to buffer frame */ + ulint type); /* in: type of object */ +/************************************************************* +Prints info of an mtr handle. */ +UNIV_INTERN +void +mtr_print( +/*======*/ + mtr_t* mtr); /* in: mtr */ +#endif /* UNIV_DEBUG */ +/*######################################################################*/ + +#define MTR_BUF_MEMO_SIZE 200 /* number of slots in memo */ + +/******************************************************************* +Returns the log object of a mini-transaction buffer. */ +UNIV_INLINE +dyn_array_t* +mtr_get_log( +/*========*/ + /* out: log */ + mtr_t* mtr); /* in: mini-transaction */ +/******************************************************* +Pushes an object to an mtr memo stack. */ +UNIV_INLINE +void +mtr_memo_push( +/*==========*/ + mtr_t* mtr, /* in: mtr */ + void* object, /* in: object */ + ulint type); /* in: object type: MTR_MEMO_S_LOCK, ... */ + + +/* Type definition of a mini-transaction memo stack slot. */ +typedef struct mtr_memo_slot_struct mtr_memo_slot_t; +struct mtr_memo_slot_struct{ + ulint type; /* type of the stored object (MTR_MEMO_S_LOCK, ...) */ + void* object; /* pointer to the object */ +}; + +/* Mini-transaction handle and buffer */ +struct mtr_struct{ +#ifdef UNIV_DEBUG + ulint state; /* MTR_ACTIVE, MTR_COMMITTING, MTR_COMMITTED */ +#endif + dyn_array_t memo; /* memo stack for locks etc. */ + dyn_array_t log; /* mini-transaction log */ + ibool modifications; + /* TRUE if the mtr made modifications to + buffer pool pages */ + ulint n_log_recs; + /* count of how many page initial log records + have been written to the mtr log */ + ulint log_mode; /* specifies which operations should be + logged; default value MTR_LOG_ALL */ + ib_uint64_t start_lsn;/* start lsn of the possible log entry for + this mtr */ + ib_uint64_t end_lsn;/* end lsn of the possible log entry for + this mtr */ +#ifdef UNIV_DEBUG + ulint magic_n; +#endif /* UNIV_DEBUG */ +}; + +#ifdef UNIV_DEBUG +# define MTR_MAGIC_N 54551 +#endif /* UNIV_DEBUG */ + +#define MTR_ACTIVE 12231 +#define MTR_COMMITTING 56456 +#define MTR_COMMITTED 34676 + +#ifndef UNIV_NONINL +#include "mtr0mtr.ic" +#endif + +#endif === added file 'storage/xtradb/include/mtr0mtr.ic' --- a/storage/xtradb/include/mtr0mtr.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/mtr0mtr.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,266 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Mini-transaction buffer + +Created 11/26/1995 Heikki Tuuri +*******************************************************/ + +#include "sync0sync.h" +#include "sync0rw.h" +#include "mach0data.h" + +/******************************************************************* +Starts a mini-transaction and creates a mini-transaction handle +and a buffer in the memory buffer given by the caller. */ +UNIV_INLINE +mtr_t* +mtr_start( +/*======*/ + /* out: mtr buffer which also acts as + the mtr handle */ + mtr_t* mtr) /* in: memory buffer for the mtr buffer */ +{ + dyn_array_create(&(mtr->memo)); + dyn_array_create(&(mtr->log)); + + mtr->log_mode = MTR_LOG_ALL; + mtr->modifications = FALSE; + mtr->n_log_recs = 0; + + ut_d(mtr->state = MTR_ACTIVE); + ut_d(mtr->magic_n = MTR_MAGIC_N); + + return(mtr); +} + +/******************************************************* +Pushes an object to an mtr memo stack. */ +UNIV_INLINE +void +mtr_memo_push( +/*==========*/ + mtr_t* mtr, /* in: mtr */ + void* object, /* in: object */ + ulint type) /* in: object type: MTR_MEMO_S_LOCK, ... */ +{ + dyn_array_t* memo; + mtr_memo_slot_t* slot; + + ut_ad(object); + ut_ad(type >= MTR_MEMO_PAGE_S_FIX); + ut_ad(type <= MTR_MEMO_X_LOCK); + ut_ad(mtr); + ut_ad(mtr->magic_n == MTR_MAGIC_N); + + memo = &(mtr->memo); + + slot = (mtr_memo_slot_t*) dyn_array_push(memo, sizeof *slot); + + slot->object = object; + slot->type = type; +} + +/************************************************************** +Sets and returns a savepoint in mtr. */ +UNIV_INLINE +ulint +mtr_set_savepoint( +/*==============*/ + /* out: savepoint */ + mtr_t* mtr) /* in: mtr */ +{ + dyn_array_t* memo; + + ut_ad(mtr); + ut_ad(mtr->magic_n == MTR_MAGIC_N); + + memo = &(mtr->memo); + + return(dyn_array_get_data_size(memo)); +} + +/************************************************************** +Releases the (index tree) s-latch stored in an mtr memo after a +savepoint. */ +UNIV_INLINE +void +mtr_release_s_latch_at_savepoint( +/*=============================*/ + mtr_t* mtr, /* in: mtr */ + ulint savepoint, /* in: savepoint */ + rw_lock_t* lock) /* in: latch to release */ +{ + mtr_memo_slot_t* slot; + dyn_array_t* memo; + + ut_ad(mtr); + ut_ad(mtr->magic_n == MTR_MAGIC_N); + ut_ad(mtr->state == MTR_ACTIVE); + + memo = &(mtr->memo); + + ut_ad(dyn_array_get_data_size(memo) > savepoint); + + slot = (mtr_memo_slot_t*) dyn_array_get_element(memo, savepoint); + + ut_ad(slot->object == lock); + ut_ad(slot->type == MTR_MEMO_S_LOCK); + + rw_lock_s_unlock(lock); + + slot->object = NULL; +} + +#ifdef UNIV_DEBUG +/************************************************************** +Checks if memo contains the given item. */ +UNIV_INLINE +ibool +mtr_memo_contains( +/*==============*/ + /* out: TRUE if contains */ + mtr_t* mtr, /* in: mtr */ + const void* object, /* in: object to search */ + ulint type) /* in: type of object */ +{ + mtr_memo_slot_t* slot; + dyn_array_t* memo; + ulint offset; + + ut_ad(mtr); + ut_ad(mtr->magic_n == MTR_MAGIC_N); + + memo = &(mtr->memo); + + offset = dyn_array_get_data_size(memo); + + while (offset > 0) { + offset -= sizeof(mtr_memo_slot_t); + + slot = dyn_array_get_element(memo, offset); + + if ((object == slot->object) && (type == slot->type)) { + + return(TRUE); + } + } + + return(FALSE); +} +#endif /* UNIV_DEBUG */ + +/******************************************************************* +Returns the log object of a mini-transaction buffer. */ +UNIV_INLINE +dyn_array_t* +mtr_get_log( +/*========*/ + /* out: log */ + mtr_t* mtr) /* in: mini-transaction */ +{ + ut_ad(mtr); + ut_ad(mtr->magic_n == MTR_MAGIC_N); + + return(&(mtr->log)); +} + +/******************************************************************* +Gets the logging mode of a mini-transaction. */ +UNIV_INLINE +ulint +mtr_get_log_mode( +/*=============*/ + /* out: logging mode: MTR_LOG_NONE, ... */ + mtr_t* mtr) /* in: mtr */ +{ + ut_ad(mtr); + ut_ad(mtr->log_mode >= MTR_LOG_ALL); + ut_ad(mtr->log_mode <= MTR_LOG_SHORT_INSERTS); + + return(mtr->log_mode); +} + +/******************************************************************* +Changes the logging mode of a mini-transaction. */ +UNIV_INLINE +ulint +mtr_set_log_mode( +/*=============*/ + /* out: old mode */ + mtr_t* mtr, /* in: mtr */ + ulint mode) /* in: logging mode: MTR_LOG_NONE, ... */ +{ + ulint old_mode; + + ut_ad(mtr); + ut_ad(mode >= MTR_LOG_ALL); + ut_ad(mode <= MTR_LOG_SHORT_INSERTS); + + old_mode = mtr->log_mode; + + if ((mode == MTR_LOG_SHORT_INSERTS) && (old_mode == MTR_LOG_NONE)) { + /* Do nothing */ + } else { + mtr->log_mode = mode; + } + + ut_ad(old_mode >= MTR_LOG_ALL); + ut_ad(old_mode <= MTR_LOG_SHORT_INSERTS); + + return(old_mode); +} + +/************************************************************************* +Locks a lock in s-mode. */ +UNIV_INLINE +void +mtr_s_lock_func( +/*============*/ + rw_lock_t* lock, /* in: rw-lock */ + const char* file, /* in: file name */ + ulint line, /* in: line number */ + mtr_t* mtr) /* in: mtr */ +{ + ut_ad(mtr); + ut_ad(lock); + + rw_lock_s_lock_func(lock, 0, file, line); + + mtr_memo_push(mtr, lock, MTR_MEMO_S_LOCK); +} + +/************************************************************************* +Locks a lock in x-mode. */ +UNIV_INLINE +void +mtr_x_lock_func( +/*============*/ + rw_lock_t* lock, /* in: rw-lock */ + const char* file, /* in: file name */ + ulint line, /* in: line number */ + mtr_t* mtr) /* in: mtr */ +{ + ut_ad(mtr); + ut_ad(lock); + + rw_lock_x_lock_func(lock, 0, file, line); + + mtr_memo_push(mtr, lock, MTR_MEMO_X_LOCK); +} === added file 'storage/xtradb/include/mtr0types.h' --- a/storage/xtradb/include/mtr0types.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/mtr0types.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,30 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Mini-transaction buffer global types + +Created 11/26/1995 Heikki Tuuri +*******************************************************/ + +#ifndef mtr0types_h +#define mtr0types_h + +typedef struct mtr_struct mtr_t; + +#endif === added file 'storage/xtradb/include/mysql_addons.h' --- a/storage/xtradb/include/mysql_addons.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/mysql_addons.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,32 @@ +/***************************************************************************** + +Copyright (c) 2007, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +This file contains functions that need to be added to +MySQL code but have not been added yet. + +Whenever you add a function here submit a MySQL bug +report (feature request) with the implementation. Then +write the bug number in the comment before the +function in this file. + +When MySQL commits the function it can be deleted from +here. In a perfect world this file exists but is empty. + +Created November 07, 2007 Vasil Dimov +*******************************************************/ === added file 'storage/xtradb/include/os0file.h' --- a/storage/xtradb/include/os0file.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/os0file.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,758 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +The interface to the operating system file io + +Created 10/21/1995 Heikki Tuuri +*******************************************************/ + +#ifndef os0file_h +#define os0file_h + +#include "univ.i" + +#ifndef __WIN__ +#include <dirent.h> +#include <sys/stat.h> +#include <time.h> +#endif + +typedef struct fil_node_struct fil_node_t; + +#ifdef UNIV_DO_FLUSH +extern ibool os_do_not_call_flush_at_each_write; +#endif /* UNIV_DO_FLUSH */ +extern ibool os_has_said_disk_full; +extern ibool os_aio_print_debug; + +extern ulint os_file_n_pending_preads; +extern ulint os_file_n_pending_pwrites; + +extern ulint os_n_pending_reads; +extern ulint os_n_pending_writes; + +#ifdef __WIN__ + +/* We define always WIN_ASYNC_IO, and check at run-time whether + the OS actually supports it: Win 95 does not, NT does. */ +#define WIN_ASYNC_IO + +#define UNIV_NON_BUFFERED_IO + +#endif + +#ifdef __WIN__ +#define os_file_t HANDLE +#define OS_FILE_FROM_FD(fd) (HANDLE) _get_osfhandle(fd) +#else +typedef int os_file_t; +#define OS_FILE_FROM_FD(fd) fd +#endif + +extern ulint os_innodb_umask; + +/* If this flag is TRUE, then we will use the native aio of the +OS (provided we compiled Innobase with it in), otherwise we will +use simulated aio we build below with threads */ + +extern ibool os_aio_use_native_aio; + +#define OS_FILE_SECTOR_SIZE 512 + +/* The next value should be smaller or equal to the smallest sector size used +on any disk. A log block is required to be a portion of disk which is written +so that if the start and the end of a block get written to disk, then the +whole block gets written. This should be true even in most cases of a crash: +if this fails for a log block, then it is equivalent to a media failure in the +log. */ + +#define OS_FILE_LOG_BLOCK_SIZE 512 + +/* Options for file_create */ +#define OS_FILE_OPEN 51 +#define OS_FILE_CREATE 52 +#define OS_FILE_OVERWRITE 53 +#define OS_FILE_OPEN_RAW 54 +#define OS_FILE_CREATE_PATH 55 +#define OS_FILE_OPEN_RETRY 56 /* for os_file_create() on + the first ibdata file */ + +#define OS_FILE_READ_ONLY 333 +#define OS_FILE_READ_WRITE 444 +#define OS_FILE_READ_ALLOW_DELETE 555 /* for ibbackup */ + +/* Options for file_create */ +#define OS_FILE_AIO 61 +#define OS_FILE_NORMAL 62 + +/* Types for file create */ +#define OS_DATA_FILE 100 +#define OS_LOG_FILE 101 + +/* Error codes from os_file_get_last_error */ +#define OS_FILE_NOT_FOUND 71 +#define OS_FILE_DISK_FULL 72 +#define OS_FILE_ALREADY_EXISTS 73 +#define OS_FILE_PATH_ERROR 74 +#define OS_FILE_AIO_RESOURCES_RESERVED 75 /* wait for OS aio resources + to become available again */ +#define OS_FILE_SHARING_VIOLATION 76 +#define OS_FILE_ERROR_NOT_SPECIFIED 77 + +/* Types for aio operations */ +#define OS_FILE_READ 10 +#define OS_FILE_WRITE 11 + +#define OS_FILE_LOG 256 /* This can be ORed to type */ + +#define OS_AIO_N_PENDING_IOS_PER_THREAD 32 /* Win NT does not allow more + than 64 */ + +/* Modes for aio operations */ +#define OS_AIO_NORMAL 21 /* Normal asynchronous i/o not for ibuf + pages or ibuf bitmap pages */ +#define OS_AIO_IBUF 22 /* Asynchronous i/o for ibuf pages or ibuf + bitmap pages */ +#define OS_AIO_LOG 23 /* Asynchronous i/o for the log */ +#define OS_AIO_SYNC 24 /* Asynchronous i/o where the calling thread + will itself wait for the i/o to complete, + doing also the job of the i/o-handler thread; + can be used for any pages, ibuf or non-ibuf. + This is used to save CPU time, as we can do + with fewer thread switches. Plain synchronous + i/o is not as good, because it must serialize + the file seek and read or write, causing a + bottleneck for parallelism. */ + +#define OS_AIO_SIMULATED_WAKE_LATER 512 /* This can be ORed to mode + in the call of os_aio(...), + if the caller wants to post several i/o + requests in a batch, and only after that + wake the i/o-handler thread; this has + effect only in simulated aio */ +#define OS_WIN31 1 +#define OS_WIN95 2 +#define OS_WINNT 3 +#define OS_WIN2000 4 + +extern ulint os_n_file_reads; +extern ulint os_n_file_writes; +extern ulint os_n_fsyncs; + +/* File types for directory entry data type */ + +enum os_file_type_enum{ + OS_FILE_TYPE_UNKNOWN = 0, + OS_FILE_TYPE_FILE, /* regular file */ + OS_FILE_TYPE_DIR, /* directory */ + OS_FILE_TYPE_LINK /* symbolic link */ +}; +typedef enum os_file_type_enum os_file_type_t; + +/* Maximum path string length in bytes when referring to tables with in the +'./databasename/tablename.ibd' path format; we can allocate at least 2 buffers +of this size from the thread stack; that is why this should not be made much +bigger than 4000 bytes */ +#define OS_FILE_MAX_PATH 4000 + +/* Struct used in fetching information of a file in a directory */ +struct os_file_stat_struct{ + char name[OS_FILE_MAX_PATH]; /* path to a file */ + os_file_type_t type; /* file type */ + ib_int64_t size; /* file size */ + time_t ctime; /* creation time */ + time_t mtime; /* modification time */ + time_t atime; /* access time */ +}; +typedef struct os_file_stat_struct os_file_stat_t; + +#ifdef __WIN__ +typedef HANDLE os_file_dir_t; /* directory stream */ +#else +typedef DIR* os_file_dir_t; /* directory stream */ +#endif + +/*************************************************************************** +Gets the operating system version. Currently works only on Windows. */ +UNIV_INTERN +ulint +os_get_os_version(void); +/*===================*/ + /* out: OS_WIN95, OS_WIN31, OS_WINNT, or OS_WIN2000 */ +/******************************************************************** +Creates the seek mutexes used in positioned reads and writes. */ +UNIV_INTERN +void +os_io_init_simple(void); +/*===================*/ +/*************************************************************************** +Creates a temporary file. This function is like tmpfile(3), but +the temporary file is created in the MySQL temporary directory. +On Netware, this function is like tmpfile(3), because the C run-time +library of Netware does not expose the delete-on-close flag. */ + +FILE* +os_file_create_tmpfile(void); +/*========================*/ + /* out: temporary file handle, or NULL on error */ +/*************************************************************************** +The os_file_opendir() function opens a directory stream corresponding to the +directory named by the dirname argument. The directory stream is positioned +at the first entry. In both Unix and Windows we automatically skip the '.' +and '..' items at the start of the directory listing. */ +UNIV_INTERN +os_file_dir_t +os_file_opendir( +/*============*/ + /* out: directory stream, NULL if + error */ + const char* dirname, /* in: directory name; it must not + contain a trailing '\' or '/' */ + ibool error_is_fatal);/* in: TRUE if we should treat an + error as a fatal error; if we try to + open symlinks then we do not wish a + fatal error if it happens not to be + a directory */ +/*************************************************************************** +Closes a directory stream. */ +UNIV_INTERN +int +os_file_closedir( +/*=============*/ + /* out: 0 if success, -1 if failure */ + os_file_dir_t dir); /* in: directory stream */ +/*************************************************************************** +This function returns information of the next file in the directory. We jump +over the '.' and '..' entries in the directory. */ +UNIV_INTERN +int +os_file_readdir_next_file( +/*======================*/ + /* out: 0 if ok, -1 if error, 1 if at the end + of the directory */ + const char* dirname,/* in: directory name or path */ + os_file_dir_t dir, /* in: directory stream */ + os_file_stat_t* info); /* in/out: buffer where the info is returned */ +/********************************************************************* +This function attempts to create a directory named pathname. The new directory +gets default permissions. On Unix, the permissions are (0770 & ~umask). If the +directory exists already, nothing is done and the call succeeds, unless the +fail_if_exists arguments is true. */ +UNIV_INTERN +ibool +os_file_create_directory( +/*=====================*/ + /* out: TRUE if call succeeds, + FALSE on error */ + const char* pathname, /* in: directory name as + null-terminated string */ + ibool fail_if_exists);/* in: if TRUE, pre-existing directory + is treated as an error. */ +/******************************************************************** +A simple function to open or create a file. */ +UNIV_INTERN +os_file_t +os_file_create_simple( +/*==================*/ + /* out, own: handle to the file, not defined + if error, error number can be retrieved with + os_file_get_last_error */ + const char* name, /* in: name of the file or path as a + null-terminated string */ + ulint create_mode,/* in: OS_FILE_OPEN if an existing file is + opened (if does not exist, error), or + OS_FILE_CREATE if a new file is created + (if exists, error), or + OS_FILE_CREATE_PATH if new file + (if exists, error) and subdirectories along + its path are created (if needed)*/ + ulint access_type,/* in: OS_FILE_READ_ONLY or + OS_FILE_READ_WRITE */ + ibool* success);/* out: TRUE if succeed, FALSE if error */ +/******************************************************************** +A simple function to open or create a file. */ +UNIV_INTERN +os_file_t +os_file_create_simple_no_error_handling( +/*====================================*/ + /* out, own: handle to the file, not defined + if error, error number can be retrieved with + os_file_get_last_error */ + const char* name, /* in: name of the file or path as a + null-terminated string */ + ulint create_mode,/* in: OS_FILE_OPEN if an existing file + is opened (if does not exist, error), or + OS_FILE_CREATE if a new file is created + (if exists, error) */ + ulint access_type,/* in: OS_FILE_READ_ONLY, + OS_FILE_READ_WRITE, or + OS_FILE_READ_ALLOW_DELETE; the last option is + used by a backup program reading the file */ + ibool* success);/* out: TRUE if succeed, FALSE if error */ +/******************************************************************** +Tries to disable OS caching on an opened file descriptor. */ +UNIV_INTERN +void +os_file_set_nocache( +/*================*/ + int fd, /* in: file descriptor to alter */ + const char* file_name, /* in: file name, used in the + diagnostic message */ + const char* operation_name);/* in: "open" or "create"; used in the + diagnostic message */ +/******************************************************************** +Opens an existing file or creates a new. */ +UNIV_INTERN +os_file_t +os_file_create( +/*===========*/ + /* out, own: handle to the file, not defined + if error, error number can be retrieved with + os_file_get_last_error */ + const char* name, /* in: name of the file or path as a + null-terminated string */ + ulint create_mode,/* in: OS_FILE_OPEN if an existing file + is opened (if does not exist, error), or + OS_FILE_CREATE if a new file is created + (if exists, error), + OS_FILE_OVERWRITE if a new file is created + or an old overwritten; + OS_FILE_OPEN_RAW, if a raw device or disk + partition should be opened */ + ulint purpose,/* in: OS_FILE_AIO, if asynchronous, + non-buffered i/o is desired, + OS_FILE_NORMAL, if any normal file; + NOTE that it also depends on type, os_aio_.. + and srv_.. variables whether we really use + async i/o or unbuffered i/o: look in the + function source code for the exact rules */ + ulint type, /* in: OS_DATA_FILE or OS_LOG_FILE */ + ibool* success);/* out: TRUE if succeed, FALSE if error */ +/*************************************************************************** +Deletes a file. The file has to be closed before calling this. */ +UNIV_INTERN +ibool +os_file_delete( +/*===========*/ + /* out: TRUE if success */ + const char* name); /* in: file path as a null-terminated string */ + +/*************************************************************************** +Deletes a file if it exists. The file has to be closed before calling this. */ +UNIV_INTERN +ibool +os_file_delete_if_exists( +/*=====================*/ + /* out: TRUE if success */ + const char* name); /* in: file path as a null-terminated string */ +/*************************************************************************** +Renames a file (can also move it to another directory). It is safest that the +file is closed before calling this function. */ +UNIV_INTERN +ibool +os_file_rename( +/*===========*/ + /* out: TRUE if success */ + const char* oldpath, /* in: old file path as a + null-terminated string */ + const char* newpath); /* in: new file path */ +/*************************************************************************** +Closes a file handle. In case of error, error number can be retrieved with +os_file_get_last_error. */ +UNIV_INTERN +ibool +os_file_close( +/*==========*/ + /* out: TRUE if success */ + os_file_t file); /* in, own: handle to a file */ +/*************************************************************************** +Closes a file handle. */ +UNIV_INTERN +ibool +os_file_close_no_error_handling( +/*============================*/ + /* out: TRUE if success */ + os_file_t file); /* in, own: handle to a file */ +/*************************************************************************** +Gets a file size. */ +UNIV_INTERN +ibool +os_file_get_size( +/*=============*/ + /* out: TRUE if success */ + os_file_t file, /* in: handle to a file */ + ulint* size, /* out: least significant 32 bits of file + size */ + ulint* size_high);/* out: most significant 32 bits of size */ +/*************************************************************************** +Gets file size as a 64-bit integer ib_int64_t. */ +UNIV_INTERN +ib_int64_t +os_file_get_size_as_iblonglong( +/*===========================*/ + /* out: size in bytes, -1 if error */ + os_file_t file); /* in: handle to a file */ +/*************************************************************************** +Write the specified number of zeros to a newly created file. */ +UNIV_INTERN +ibool +os_file_set_size( +/*=============*/ + /* out: TRUE if success */ + const char* name, /* in: name of the file or path as a + null-terminated string */ + os_file_t file, /* in: handle to a file */ + ulint size, /* in: least significant 32 bits of file + size */ + ulint size_high);/* in: most significant 32 bits of size */ +/*************************************************************************** +Truncates a file at its current position. */ +UNIV_INTERN +ibool +os_file_set_eof( +/*============*/ + /* out: TRUE if success */ + FILE* file); /* in: file to be truncated */ +/*************************************************************************** +Flushes the write buffers of a given file to the disk. */ +UNIV_INTERN +ibool +os_file_flush( +/*==========*/ + /* out: TRUE if success */ + os_file_t file); /* in, own: handle to a file */ +/*************************************************************************** +Retrieves the last error number if an error occurs in a file io function. +The number should be retrieved before any other OS calls (because they may +overwrite the error number). If the number is not known to this program, +the OS error number + 100 is returned. */ +UNIV_INTERN +ulint +os_file_get_last_error( +/*===================*/ + /* out: error number, or OS error + number + 100 */ + ibool report_all_errors); /* in: TRUE if we want an error message + printed of all errors */ +/*********************************************************************** +Requests a synchronous read operation. */ +UNIV_INTERN +ibool +os_file_read( +/*=========*/ + /* out: TRUE if request was + successful, FALSE if fail */ + os_file_t file, /* in: handle to a file */ + void* buf, /* in: buffer where to read */ + ulint offset, /* in: least significant 32 bits of file + offset where to read */ + ulint offset_high,/* in: most significant 32 bits of + offset */ + ulint n); /* in: number of bytes to read */ +/*********************************************************************** +Rewind file to its start, read at most size - 1 bytes from it to str, and +NUL-terminate str. All errors are silently ignored. This function is +mostly meant to be used with temporary files. */ +UNIV_INTERN +void +os_file_read_string( +/*================*/ + FILE* file, /* in: file to read from */ + char* str, /* in: buffer where to read */ + ulint size); /* in: size of buffer */ +/*********************************************************************** +Requests a synchronous positioned read operation. This function does not do +any error handling. In case of error it returns FALSE. */ +UNIV_INTERN +ibool +os_file_read_no_error_handling( +/*===========================*/ + /* out: TRUE if request was + successful, FALSE if fail */ + os_file_t file, /* in: handle to a file */ + void* buf, /* in: buffer where to read */ + ulint offset, /* in: least significant 32 bits of file + offset where to read */ + ulint offset_high,/* in: most significant 32 bits of + offset */ + ulint n); /* in: number of bytes to read */ + +/*********************************************************************** +Requests a synchronous write operation. */ +UNIV_INTERN +ibool +os_file_write( +/*==========*/ + /* out: TRUE if request was + successful, FALSE if fail */ + const char* name, /* in: name of the file or path as a + null-terminated string */ + os_file_t file, /* in: handle to a file */ + const void* buf, /* in: buffer from which to write */ + ulint offset, /* in: least significant 32 bits of file + offset where to write */ + ulint offset_high,/* in: most significant 32 bits of + offset */ + ulint n); /* in: number of bytes to write */ +/*********************************************************************** +Check the existence and type of the given file. */ +UNIV_INTERN +ibool +os_file_status( +/*===========*/ + /* out: TRUE if call succeeded */ + const char* path, /* in: pathname of the file */ + ibool* exists, /* out: TRUE if file exists */ + os_file_type_t* type); /* out: type of the file (if it exists) */ +/******************************************************************** +The function os_file_dirname returns a directory component of a +null-terminated pathname string. In the usual case, dirname returns +the string up to, but not including, the final '/', and basename +is the component following the final '/'. Trailing '/' charac� +ters are not counted as part of the pathname. + +If path does not contain a slash, dirname returns the string ".". + +Concatenating the string returned by dirname, a "/", and the basename +yields a complete pathname. + +The return value is a copy of the directory component of the pathname. +The copy is allocated from heap. It is the caller responsibility +to free it after it is no longer needed. + +The following list of examples (taken from SUSv2) shows the strings +returned by dirname and basename for different paths: + + path dirname basename + "/usr/lib" "/usr" "lib" + "/usr/" "/" "usr" + "usr" "." "usr" + "/" "/" "/" + "." "." "." + ".." "." ".." +*/ +UNIV_INTERN +char* +os_file_dirname( +/*============*/ + /* out, own: directory component of the + pathname */ + const char* path); /* in: pathname */ +/******************************************************************** +Creates all missing subdirectories along the given path. */ +UNIV_INTERN +ibool +os_file_create_subdirs_if_needed( +/*=============================*/ + /* out: TRUE if call succeeded + FALSE otherwise */ + const char* path); /* in: path name */ +/**************************************************************************** +Initializes the asynchronous io system. Creates separate aio array for +non-ibuf read and write, a third aio array for the ibuf i/o, with just one +segment, two aio arrays for log reads and writes with one segment, and a +synchronous aio array of the specified size. The combined number of segments +in the three first aio arrays is the parameter n_segments given to the +function. The caller must create an i/o handler thread for each segment in +the four first arrays, but not for the sync aio array. */ +UNIV_INTERN +void +os_aio_init( +/*========*/ + ulint n, /* in: maximum number of pending aio operations + allowed; n must be divisible by n_segments */ +// ulint n_segments, /* in: combined number of segments in the four +// first aio arrays; must be >= 4 */ + ulint n_read_threads, /* n_segments == 2 + n_read_threads + n_write_threads */ + ulint n_write_threads, /**/ + ulint n_slots_sync); /* in: number of slots in the sync aio array */ +/*********************************************************************** +Requests an asynchronous i/o operation. */ +UNIV_INTERN +ibool +os_aio( +/*===*/ + /* out: TRUE if request was queued + successfully, FALSE if fail */ + ulint type, /* in: OS_FILE_READ or OS_FILE_WRITE */ + ulint mode, /* in: OS_AIO_NORMAL, ..., possibly ORed + to OS_AIO_SIMULATED_WAKE_LATER: the + last flag advises this function not to wake + i/o-handler threads, but the caller will + do the waking explicitly later, in this + way the caller can post several requests in + a batch; NOTE that the batch must not be + so big that it exhausts the slots in aio + arrays! NOTE that a simulated batch + may introduce hidden chances of deadlocks, + because i/os are not actually handled until + all have been posted: use with great + caution! */ + const char* name, /* in: name of the file or path as a + null-terminated string */ + os_file_t file, /* in: handle to a file */ + void* buf, /* in: buffer where to read or from which + to write */ + ulint offset, /* in: least significant 32 bits of file + offset where to read or write */ + ulint offset_high, /* in: most significant 32 bits of + offset */ + ulint n, /* in: number of bytes to read or write */ + fil_node_t* message1,/* in: messages for the aio handler (these + can be used to identify a completed aio + operation); if mode is OS_AIO_SYNC, these + are ignored */ + void* message2); +/**************************************************************************** +Wakes up all async i/o threads so that they know to exit themselves in +shutdown. */ +UNIV_INTERN +void +os_aio_wake_all_threads_at_shutdown(void); +/*=====================================*/ +/**************************************************************************** +Waits until there are no pending writes in os_aio_write_array. There can +be other, synchronous, pending writes. */ +UNIV_INTERN +void +os_aio_wait_until_no_pending_writes(void); +/*=====================================*/ +/************************************************************************** +Wakes up simulated aio i/o-handler threads if they have something to do. */ +UNIV_INTERN +void +os_aio_simulated_wake_handler_threads(void); +/*=======================================*/ +/************************************************************************** +This function can be called if one wants to post a batch of reads and +prefers an i/o-handler thread to handle them all at once later. You must +call os_aio_simulated_wake_handler_threads later to ensure the threads +are not left sleeping! */ +UNIV_INTERN +void +os_aio_simulated_put_read_threads_to_sleep(void); +/*============================================*/ + +#ifdef WIN_ASYNC_IO +/************************************************************************** +This function is only used in Windows asynchronous i/o. +Waits for an aio operation to complete. This function is used to wait the +for completed requests. The aio array of pending requests is divided +into segments. The thread specifies which segment or slot it wants to wait +for. NOTE: this function will also take care of freeing the aio slot, +therefore no other thread is allowed to do the freeing! */ +UNIV_INTERN +ibool +os_aio_windows_handle( +/*==================*/ + /* out: TRUE if the aio operation succeeded */ + ulint segment, /* in: the number of the segment in the aio + arrays to wait for; segment 0 is the ibuf + i/o thread, segment 1 the log i/o thread, + then follow the non-ibuf read threads, and as + the last are the non-ibuf write threads; if + this is ULINT_UNDEFINED, then it means that + sync aio is used, and this parameter is + ignored */ + ulint pos, /* this parameter is used only in sync aio: + wait for the aio slot at this position */ + fil_node_t**message1, /* out: the messages passed with the aio + request; note that also in the case where + the aio operation failed, these output + parameters are valid and can be used to + restart the operation, for example */ + void** message2, + ulint* type); /* out: OS_FILE_WRITE or ..._READ */ +#endif + +/************************************************************************** +Does simulated aio. This function should be called by an i/o-handler +thread. */ +UNIV_INTERN +ibool +os_aio_simulated_handle( +/*====================*/ + /* out: TRUE if the aio operation succeeded */ + ulint segment, /* in: the number of the segment in the aio + arrays to wait for; segment 0 is the ibuf + i/o thread, segment 1 the log i/o thread, + then follow the non-ibuf read threads, and as + the last are the non-ibuf write threads */ + fil_node_t**message1, /* out: the messages passed with the aio + request; note that also in the case where + the aio operation failed, these output + parameters are valid and can be used to + restart the operation, for example */ + void** message2, + ulint* type); /* out: OS_FILE_WRITE or ..._READ */ +/************************************************************************** +Validates the consistency of the aio system. */ +UNIV_INTERN +ibool +os_aio_validate(void); +/*=================*/ + /* out: TRUE if ok */ +/************************************************************************** +Prints info of the aio arrays. */ +UNIV_INTERN +void +os_aio_print( +/*=========*/ + FILE* file); /* in: file where to print */ +/************************************************************************** +Refreshes the statistics used to print per-second averages. */ +UNIV_INTERN +void +os_aio_refresh_stats(void); +/*======================*/ + +#ifdef UNIV_DEBUG +/************************************************************************** +Checks that all slots in the system have been freed, that is, there are +no pending io operations. */ +UNIV_INTERN +ibool +os_aio_all_slots_free(void); +/*=======================*/ +#endif /* UNIV_DEBUG */ + +/*********************************************************************** +This function returns information about the specified file */ +UNIV_INTERN +ibool +os_file_get_status( +/*===============*/ + /* out: TRUE if stat + information found */ + const char* path, /* in: pathname of the file */ + os_file_stat_t* stat_info); /* information of a file in a + directory */ + +#if !defined(UNIV_HOTBACKUP) && !defined(__NETWARE__) +/************************************************************************* +Creates a temporary file that will be deleted on close. +This function is defined in ha_innodb.cc. */ +UNIV_INTERN +int +innobase_mysql_tmpfile(void); +/*========================*/ + /* out: temporary file descriptor, or < 0 on error */ +#endif /* !UNIV_HOTBACKUP && !__NETWARE__ */ + +#endif === added file 'storage/xtradb/include/os0proc.h' --- a/storage/xtradb/include/os0proc.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/os0proc.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,84 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +The interface to the operating system +process control primitives + +Created 9/30/1995 Heikki Tuuri +*******************************************************/ + +#ifndef os0proc_h +#define os0proc_h + +#include "univ.i" + +#ifdef UNIV_LINUX +#include <sys/ipc.h> +#include <sys/shm.h> +#endif + +typedef void* os_process_t; +typedef unsigned long int os_process_id_t; + +extern ibool os_use_large_pages; +/* Large page size. This may be a boot-time option on some platforms */ +extern ulint os_large_page_size; + +/******************************************************************** +Converts the current process id to a number. It is not guaranteed that the +number is unique. In Linux returns the 'process number' of the current +thread. That number is the same as one sees in 'top', for example. In Linux +the thread id is not the same as one sees in 'top'. */ +UNIV_INTERN +ulint +os_proc_get_number(void); +/*====================*/ +/******************************************************************** +Allocates large pages memory. */ +UNIV_INTERN +void* +os_mem_alloc_large( +/*===============*/ + /* out: allocated memory */ + ulint* n); /* in/out: number of bytes */ +/******************************************************************** +Frees large pages memory. */ +UNIV_INTERN +void +os_mem_free_large( +/*==============*/ + void *ptr, /* in: pointer returned by + os_mem_alloc_large() */ + ulint size); /* in: size returned by + os_mem_alloc_large() */ +/******************************************************************** +Sets the priority boost for threads released from waiting within the current +process. */ +UNIV_INTERN +void +os_process_set_priority_boost( +/*==========================*/ + ibool do_boost); /* in: TRUE if priority boost should be done, + FALSE if not */ + +#ifndef UNIV_NONINL +#include "os0proc.ic" +#endif + +#endif === added file 'storage/xtradb/include/os0proc.ic' --- a/storage/xtradb/include/os0proc.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/os0proc.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,26 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +The interface to the operating system +process control primitives + +Created 9/30/1995 Heikki Tuuri +*******************************************************/ + + === added file 'storage/xtradb/include/os0sync.h' --- a/storage/xtradb/include/os0sync.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/os0sync.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,309 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. +Copyright (c) 2008, Google Inc. + +Portions of this file contain modifications contributed and copyrighted by +Google, Inc. Those modifications are gratefully acknowledged and are described +briefly in the InnoDB documentation. The contributions by Google are +incorporated with their permission, and subject to the conditions contained in +the file COPYING.Google. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +The interface to the operating system +synchronization primitives. + +Created 9/6/1995 Heikki Tuuri +*******************************************************/ + +#ifndef os0sync_h +#define os0sync_h + +#include "univ.i" +#include "ut0lst.h" + +#ifdef __WIN__ + +#define os_fast_mutex_t CRITICAL_SECTION + +typedef HANDLE os_native_event_t; + +typedef struct os_event_struct os_event_struct_t; +typedef os_event_struct_t* os_event_t; + +struct os_event_struct { + os_native_event_t handle; + /* Windows event */ + UT_LIST_NODE_T(os_event_struct_t) os_event_list; + /* list of all created events */ +}; +#else +typedef pthread_mutex_t os_fast_mutex_t; + +typedef struct os_event_struct os_event_struct_t; +typedef os_event_struct_t* os_event_t; + +struct os_event_struct { + os_fast_mutex_t os_mutex; /* this mutex protects the next + fields */ + ibool is_set; /* this is TRUE when the event is + in the signaled state, i.e., a thread + does not stop if it tries to wait for + this event */ + ib_int64_t signal_count; /* this is incremented each time + the event becomes signaled */ + pthread_cond_t cond_var; /* condition variable is used in + waiting for the event */ + UT_LIST_NODE_T(os_event_struct_t) os_event_list; + /* list of all created events */ +}; +#endif + +typedef struct os_mutex_struct os_mutex_str_t; +typedef os_mutex_str_t* os_mutex_t; + +#define OS_SYNC_INFINITE_TIME ((ulint)(-1)) + +#define OS_SYNC_TIME_EXCEEDED 1 + +/* Mutex protecting counts and the event and OS 'slow' mutex lists */ +extern os_mutex_t os_sync_mutex; + +/* This is incremented by 1 in os_thread_create and decremented by 1 in +os_thread_exit */ +extern ulint os_thread_count; + +extern ulint os_event_count; +extern ulint os_mutex_count; +extern ulint os_fast_mutex_count; + +/************************************************************* +Initializes global event and OS 'slow' mutex lists. */ +UNIV_INTERN +void +os_sync_init(void); +/*==============*/ +/************************************************************* +Frees created events and OS 'slow' mutexes. */ +UNIV_INTERN +void +os_sync_free(void); +/*==============*/ +/************************************************************* +Creates an event semaphore, i.e., a semaphore which may just have two states: +signaled and nonsignaled. The created event is manual reset: it must be reset +explicitly by calling sync_os_reset_event. */ +UNIV_INTERN +os_event_t +os_event_create( +/*============*/ + /* out: the event handle */ + const char* name); /* in: the name of the event, if NULL + the event is created without a name */ +#ifdef __WIN__ +/************************************************************* +Creates an auto-reset event semaphore, i.e., an event which is automatically +reset when a single thread is released. Works only in Windows. */ +UNIV_INTERN +os_event_t +os_event_create_auto( +/*=================*/ + /* out: the event handle */ + const char* name); /* in: the name of the event, if NULL + the event is created without a name */ +#endif +/************************************************************** +Sets an event semaphore to the signaled state: lets waiting threads +proceed. */ +UNIV_INTERN +void +os_event_set( +/*=========*/ + os_event_t event); /* in: event to set */ +/************************************************************** +Resets an event semaphore to the nonsignaled state. Waiting threads will +stop to wait for the event. +The return value should be passed to os_even_wait_low() if it is desired +that this thread should not wait in case of an intervening call to +os_event_set() between this os_event_reset() and the +os_event_wait_low() call. See comments for os_event_wait_low(). */ +UNIV_INTERN +ib_int64_t +os_event_reset( +/*===========*/ + os_event_t event); /* in: event to reset */ +/************************************************************** +Frees an event object. */ +UNIV_INTERN +void +os_event_free( +/*==========*/ + os_event_t event); /* in: event to free */ + +/************************************************************** +Waits for an event object until it is in the signaled state. If +srv_shutdown_state == SRV_SHUTDOWN_EXIT_THREADS this also exits the +waiting thread when the event becomes signaled (or immediately if the +event is already in the signaled state). + +Typically, if the event has been signalled after the os_event_reset() +we'll return immediately because event->is_set == TRUE. +There are, however, situations (e.g.: sync_array code) where we may +lose this information. For example: + +thread A calls os_event_reset() +thread B calls os_event_set() [event->is_set == TRUE] +thread C calls os_event_reset() [event->is_set == FALSE] +thread A calls os_event_wait() [infinite wait!] +thread C calls os_event_wait() [infinite wait!] + +Where such a scenario is possible, to avoid infinite wait, the +value returned by os_event_reset() should be passed in as +reset_sig_count. */ +UNIV_INTERN +void +os_event_wait_low( +/*==============*/ + os_event_t event, /* in: event to wait */ + ib_int64_t reset_sig_count);/* in: zero or the value + returned by previous call of + os_event_reset(). */ + +#define os_event_wait(event) os_event_wait_low(event, 0) + +/************************************************************** +Waits for an event object until it is in the signaled state or +a timeout is exceeded. In Unix the timeout is always infinite. */ +UNIV_INTERN +ulint +os_event_wait_time( +/*===============*/ + /* out: 0 if success, + OS_SYNC_TIME_EXCEEDED if timeout + was exceeded */ + os_event_t event, /* in: event to wait */ + ulint time); /* in: timeout in microseconds, or + OS_SYNC_INFINITE_TIME */ +#ifdef __WIN__ +/************************************************************** +Waits for any event in an OS native event array. Returns if even a single +one is signaled or becomes signaled. */ +UNIV_INTERN +ulint +os_event_wait_multiple( +/*===================*/ + /* out: index of the event + which was signaled */ + ulint n, /* in: number of events in the + array */ + os_native_event_t* native_event_array); + /* in: pointer to an array of event + handles */ +#endif +/************************************************************* +Creates an operating system mutex semaphore. Because these are slow, the +mutex semaphore of InnoDB itself (mutex_t) should be used where possible. */ +UNIV_INTERN +os_mutex_t +os_mutex_create( +/*============*/ + /* out: the mutex handle */ + const char* name); /* in: the name of the mutex, if NULL + the mutex is created without a name */ +/************************************************************** +Acquires ownership of a mutex semaphore. */ +UNIV_INTERN +void +os_mutex_enter( +/*===========*/ + os_mutex_t mutex); /* in: mutex to acquire */ +/************************************************************** +Releases ownership of a mutex. */ +UNIV_INTERN +void +os_mutex_exit( +/*==========*/ + os_mutex_t mutex); /* in: mutex to release */ +/************************************************************** +Frees an mutex object. */ +UNIV_INTERN +void +os_mutex_free( +/*==========*/ + os_mutex_t mutex); /* in: mutex to free */ +/************************************************************** +Acquires ownership of a fast mutex. Currently in Windows this is the same +as os_fast_mutex_lock! */ +UNIV_INLINE +ulint +os_fast_mutex_trylock( +/*==================*/ + /* out: 0 if success, != 0 if + was reserved by another + thread */ + os_fast_mutex_t* fast_mutex); /* in: mutex to acquire */ +/************************************************************** +Releases ownership of a fast mutex. */ +UNIV_INTERN +void +os_fast_mutex_unlock( +/*=================*/ + os_fast_mutex_t* fast_mutex); /* in: mutex to release */ +/************************************************************* +Initializes an operating system fast mutex semaphore. */ +UNIV_INTERN +void +os_fast_mutex_init( +/*===============*/ + os_fast_mutex_t* fast_mutex); /* in: fast mutex */ +/************************************************************** +Acquires ownership of a fast mutex. */ +UNIV_INTERN +void +os_fast_mutex_lock( +/*===============*/ + os_fast_mutex_t* fast_mutex); /* in: mutex to acquire */ +/************************************************************** +Frees an mutex object. */ +UNIV_INTERN +void +os_fast_mutex_free( +/*===============*/ + os_fast_mutex_t* fast_mutex); /* in: mutex to free */ + +#ifdef HAVE_GCC_ATOMIC_BUILTINS +/************************************************************** +Atomic compare-and-swap for InnoDB. Currently requires GCC atomic builtins. +Returns true if swapped, ptr is pointer to target, old_val is value to +compare to, new_val is the value to swap in. */ +#define os_compare_and_swap(ptr, old_val, new_val) \ + __sync_bool_compare_and_swap(ptr, old_val, new_val) + +/************************************************************** +Atomic increment for InnoDB. Currently requires GCC atomic builtins. +Returns the resulting value, ptr is pointer to target, amount is the +amount of increment. */ +#define os_atomic_increment(ptr, amount) \ + __sync_add_and_fetch(ptr, amount) + +#endif /* HAVE_GCC_ATOMIC_BUILTINS */ + +#ifndef UNIV_NONINL +#include "os0sync.ic" +#endif + +#endif === added file 'storage/xtradb/include/os0sync.ic' --- a/storage/xtradb/include/os0sync.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/os0sync.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,62 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +The interface to the operating system synchronization primitives. + +Created 9/6/1995 Heikki Tuuri +*******************************************************/ + +#ifdef __WIN__ +#include <winbase.h> +#endif + +/************************************************************** +Acquires ownership of a fast mutex. Currently in Windows this is the same +as os_fast_mutex_lock! */ +UNIV_INLINE +ulint +os_fast_mutex_trylock( +/*==================*/ + /* out: 0 if success, != 0 if + was reserved by another + thread */ + os_fast_mutex_t* fast_mutex) /* in: mutex to acquire */ +{ +#ifdef __WIN__ + EnterCriticalSection(fast_mutex); + + return(0); +#else +#if defined(UNIV_HOTBACKUP) && defined(UNIV_HPUX10) + /* Since the hot backup version is standalone, MySQL does not redefine + pthread_mutex_trylock for HP-UX-10.20, and consequently we must invert + the return value here */ + + return((ulint) (1 - pthread_mutex_trylock(fast_mutex))); +#else + /* NOTE that the MySQL my_pthread.h redefines pthread_mutex_trylock + so that it returns 0 on success. In the operating system + libraries, HP-UX-10.20 follows the old Posix 1003.4a Draft 4 and + returns 1 on success (but MySQL remaps that to 0), while Linux, + FreeBSD, Solaris, AIX, Tru64 Unix, HP-UX-11.0 return 0 on success. */ + + return((ulint) pthread_mutex_trylock(fast_mutex)); +#endif +#endif +} === added file 'storage/xtradb/include/os0thread.h' --- a/storage/xtradb/include/os0thread.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/os0thread.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,158 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +The interface to the operating system +process and thread control primitives + +Created 9/8/1995 Heikki Tuuri +*******************************************************/ + +#ifndef os0thread_h +#define os0thread_h + +#include "univ.i" + +/* Maximum number of threads which can be created in the program; +this is also the size of the wait slot array for MySQL threads which +can wait inside InnoDB */ + +#define OS_THREAD_MAX_N srv_max_n_threads + + +/* Possible fixed priorities for threads */ +#define OS_THREAD_PRIORITY_NONE 100 +#define OS_THREAD_PRIORITY_BACKGROUND 1 +#define OS_THREAD_PRIORITY_NORMAL 2 +#define OS_THREAD_PRIORITY_ABOVE_NORMAL 3 + +#ifdef __WIN__ +typedef void* os_thread_t; +typedef ulint os_thread_id_t; /* In Windows the thread id + is an unsigned long int */ +#else +typedef pthread_t os_thread_t; +typedef os_thread_t os_thread_id_t; /* In Unix we use the thread + handle itself as the id of + the thread */ +#endif + +/* Define a function pointer type to use in a typecast */ +typedef void* (*os_posix_f_t) (void*); + +/******************************************************************* +Compares two thread ids for equality. */ +UNIV_INTERN +ibool +os_thread_eq( +/*=========*/ + /* out: TRUE if equal */ + os_thread_id_t a, /* in: OS thread or thread id */ + os_thread_id_t b); /* in: OS thread or thread id */ +/******************************************************************** +Converts an OS thread id to a ulint. It is NOT guaranteed that the ulint is +unique for the thread though! */ +UNIV_INTERN +ulint +os_thread_pf( +/*=========*/ + /* out: unsigned long int */ + os_thread_id_t a); /* in: thread or thread id */ +/******************************************************************** +Creates a new thread of execution. The execution starts from +the function given. The start function takes a void* parameter +and returns a ulint. +NOTE: We count the number of threads in os_thread_exit(). A created +thread should always use that to exit and not use return() to exit. */ +UNIV_INTERN +os_thread_t +os_thread_create( +/*=============*/ + /* out: handle to the thread */ +#ifndef __WIN__ + os_posix_f_t start_f, +#else + ulint (*start_f)(void*), /* in: pointer to function + from which to start */ +#endif + void* arg, /* in: argument to start + function */ + os_thread_id_t* thread_id); /* out: id of the created + thread, or NULL */ + +/********************************************************************* +Exits the current thread. */ +UNIV_INTERN +void +os_thread_exit( +/*===========*/ + void* exit_value); /* in: exit value; in Windows this void* + is cast as a DWORD */ +/********************************************************************* +Returns the thread identifier of current thread. */ +UNIV_INTERN +os_thread_id_t +os_thread_get_curr_id(void); +/*========================*/ +/********************************************************************* +Returns handle to the current thread. */ +UNIV_INTERN +os_thread_t +os_thread_get_curr(void); +/*====================*/ +/********************************************************************* +Advises the os to give up remainder of the thread's time slice. */ +UNIV_INTERN +void +os_thread_yield(void); +/*=================*/ +/********************************************************************* +The thread sleeps at least the time given in microseconds. */ +UNIV_INTERN +void +os_thread_sleep( +/*============*/ + ulint tm); /* in: time in microseconds */ +/********************************************************************** +Gets a thread priority. */ +UNIV_INTERN +ulint +os_thread_get_priority( +/*===================*/ + /* out: priority */ + os_thread_t handle);/* in: OS handle to the thread */ +/********************************************************************** +Sets a thread priority. */ +UNIV_INTERN +void +os_thread_set_priority( +/*===================*/ + os_thread_t handle, /* in: OS handle to the thread */ + ulint pri); /* in: priority: one of OS_PRIORITY_... */ +/********************************************************************** +Gets the last operating system error code for the calling thread. */ +UNIV_INTERN +ulint +os_thread_get_last_error(void); +/*==========================*/ + +#ifndef UNIV_NONINL +#include "os0thread.ic" +#endif + +#endif === added file 'storage/xtradb/include/os0thread.ic' --- a/storage/xtradb/include/os0thread.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/os0thread.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,24 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +The interface to the operating system +process and thread control primitives + +Created 9/8/1995 Heikki Tuuri +*******************************************************/ === added file 'storage/xtradb/include/page0cur.h' --- a/storage/xtradb/include/page0cur.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/page0cur.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,346 @@ +/***************************************************************************** + +Copyright (c) 1994, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/************************************************************************ +The page cursor + +Created 10/4/1994 Heikki Tuuri +*************************************************************************/ + +#ifndef page0cur_h +#define page0cur_h + +#include "univ.i" + +#include "buf0types.h" +#include "page0page.h" +#include "rem0rec.h" +#include "data0data.h" +#include "mtr0mtr.h" + + +#define PAGE_CUR_ADAPT + +/* Page cursor search modes; the values must be in this order! */ + +#define PAGE_CUR_UNSUPP 0 +#define PAGE_CUR_G 1 +#define PAGE_CUR_GE 2 +#define PAGE_CUR_L 3 +#define PAGE_CUR_LE 4 +/*#define PAGE_CUR_LE_OR_EXTENDS 5*/ /* This is a search mode used in + "column LIKE 'abc%' ORDER BY column DESC"; + we have to find strings which are <= 'abc' or + which extend it */ +#ifdef UNIV_SEARCH_DEBUG +# define PAGE_CUR_DBG 6 /* As PAGE_CUR_LE, but skips search shortcut */ +#endif /* UNIV_SEARCH_DEBUG */ + +#ifdef UNIV_DEBUG +/************************************************************* +Gets pointer to the page frame where the cursor is positioned. */ +UNIV_INLINE +page_t* +page_cur_get_page( +/*==============*/ + /* out: page */ + page_cur_t* cur); /* in: page cursor */ +/************************************************************* +Gets pointer to the buffer block where the cursor is positioned. */ +UNIV_INLINE +buf_block_t* +page_cur_get_block( +/*===============*/ + /* out: page */ + page_cur_t* cur); /* in: page cursor */ +/************************************************************* +Gets pointer to the page frame where the cursor is positioned. */ +UNIV_INLINE +page_zip_des_t* +page_cur_get_page_zip( +/*==================*/ + /* out: page */ + page_cur_t* cur); /* in: page cursor */ +/************************************************************* +Gets the record where the cursor is positioned. */ +UNIV_INLINE +rec_t* +page_cur_get_rec( +/*=============*/ + /* out: record */ + page_cur_t* cur); /* in: page cursor */ +#else /* UNIV_DEBUG */ +# define page_cur_get_page(cur) page_align((cur)->rec) +# define page_cur_get_block(cur) (cur)->block +# define page_cur_get_page_zip(cur) buf_block_get_page_zip((cur)->block) +# define page_cur_get_rec(cur) (cur)->rec +#endif /* UNIV_DEBUG */ +/************************************************************* +Sets the cursor object to point before the first user record +on the page. */ +UNIV_INLINE +void +page_cur_set_before_first( +/*======================*/ + const buf_block_t* block, /* in: index page */ + page_cur_t* cur); /* in: cursor */ +/************************************************************* +Sets the cursor object to point after the last user record on +the page. */ +UNIV_INLINE +void +page_cur_set_after_last( +/*====================*/ + const buf_block_t* block, /* in: index page */ + page_cur_t* cur); /* in: cursor */ +/************************************************************* +Returns TRUE if the cursor is before first user record on page. */ +UNIV_INLINE +ibool +page_cur_is_before_first( +/*=====================*/ + /* out: TRUE if at start */ + const page_cur_t* cur); /* in: cursor */ +/************************************************************* +Returns TRUE if the cursor is after last user record. */ +UNIV_INLINE +ibool +page_cur_is_after_last( +/*===================*/ + /* out: TRUE if at end */ + const page_cur_t* cur); /* in: cursor */ +/************************************************************** +Positions the cursor on the given record. */ +UNIV_INLINE +void +page_cur_position( +/*==============*/ + const rec_t* rec, /* in: record on a page */ + const buf_block_t* block, /* in: buffer block containing + the record */ + page_cur_t* cur); /* out: page cursor */ +/************************************************************** +Invalidates a page cursor by setting the record pointer NULL. */ +UNIV_INLINE +void +page_cur_invalidate( +/*================*/ + page_cur_t* cur); /* out: page cursor */ +/************************************************************** +Moves the cursor to the next record on page. */ +UNIV_INLINE +void +page_cur_move_to_next( +/*==================*/ + page_cur_t* cur); /* in/out: cursor; must not be after last */ +/************************************************************** +Moves the cursor to the previous record on page. */ +UNIV_INLINE +void +page_cur_move_to_prev( +/*==================*/ + page_cur_t* cur); /* in/out: cursor; not before first */ +/*************************************************************** +Inserts a record next to page cursor. Returns pointer to inserted record if +succeed, i.e., enough space available, NULL otherwise. The cursor stays at +the same logical position, but the physical position may change if it is +pointing to a compressed page that was reorganized. */ +UNIV_INLINE +rec_t* +page_cur_tuple_insert( +/*==================*/ + /* out: pointer to record if succeed, NULL + otherwise */ + page_cur_t* cursor, /* in/out: a page cursor */ + const dtuple_t* tuple, /* in: pointer to a data tuple */ + dict_index_t* index, /* in: record descriptor */ + ulint n_ext, /* in: number of externally stored columns */ + mtr_t* mtr); /* in: mini-transaction handle, or NULL */ +/*************************************************************** +Inserts a record next to page cursor. Returns pointer to inserted record if +succeed, i.e., enough space available, NULL otherwise. The cursor stays at +the same logical position, but the physical position may change if it is +pointing to a compressed page that was reorganized. */ +UNIV_INLINE +rec_t* +page_cur_rec_insert( +/*================*/ + /* out: pointer to record if succeed, NULL + otherwise */ + page_cur_t* cursor, /* in/out: a page cursor */ + const rec_t* rec, /* in: record to insert */ + dict_index_t* index, /* in: record descriptor */ + ulint* offsets,/* in/out: rec_get_offsets(rec, index) */ + mtr_t* mtr); /* in: mini-transaction handle, or NULL */ +/*************************************************************** +Inserts a record next to page cursor on an uncompressed page. +Returns pointer to inserted record if succeed, i.e., enough +space available, NULL otherwise. The cursor stays at the same position. */ +UNIV_INTERN +rec_t* +page_cur_insert_rec_low( +/*====================*/ + /* out: pointer to record if succeed, NULL + otherwise */ + rec_t* current_rec,/* in: pointer to current record after + which the new record is inserted */ + dict_index_t* index, /* in: record descriptor */ + const rec_t* rec, /* in: pointer to a physical record */ + ulint* offsets,/* in/out: rec_get_offsets(rec, index) */ + mtr_t* mtr); /* in: mini-transaction handle, or NULL */ +/*************************************************************** +Inserts a record next to page cursor on a compressed and uncompressed +page. Returns pointer to inserted record if succeed, i.e., +enough space available, NULL otherwise. +The cursor stays at the same position. */ +UNIV_INTERN +rec_t* +page_cur_insert_rec_zip( +/*====================*/ + /* out: pointer to record if succeed, NULL + otherwise */ + rec_t** current_rec,/* in/out: pointer to current record after + which the new record is inserted */ + buf_block_t* block, /* in: buffer block of *current_rec */ + dict_index_t* index, /* in: record descriptor */ + const rec_t* rec, /* in: pointer to a physical record */ + ulint* offsets,/* in/out: rec_get_offsets(rec, index) */ + mtr_t* mtr); /* in: mini-transaction handle, or NULL */ +/***************************************************************** +Copies records from page to a newly created page, from a given record onward, +including that record. Infimum and supremum records are not copied. */ +UNIV_INTERN +void +page_copy_rec_list_end_to_created_page( +/*===================================*/ + page_t* new_page, /* in/out: index page to copy to */ + rec_t* rec, /* in: first record to copy */ + dict_index_t* index, /* in: record descriptor */ + mtr_t* mtr); /* in: mtr */ +/*************************************************************** +Deletes a record at the page cursor. The cursor is moved to the +next record after the deleted one. */ +UNIV_INTERN +void +page_cur_delete_rec( +/*================*/ + page_cur_t* cursor, /* in/out: a page cursor */ + dict_index_t* index, /* in: record descriptor */ + const ulint* offsets,/* in: rec_get_offsets(cursor->rec, index) */ + mtr_t* mtr); /* in: mini-transaction handle */ +/******************************************************************** +Searches the right position for a page cursor. */ +UNIV_INLINE +ulint +page_cur_search( +/*============*/ + /* out: number of matched + fields on the left */ + const buf_block_t* block, /* in: buffer block */ + const dict_index_t* index, /* in: record descriptor */ + const dtuple_t* tuple, /* in: data tuple */ + ulint mode, /* in: PAGE_CUR_L, + PAGE_CUR_LE, PAGE_CUR_G, or + PAGE_CUR_GE */ + page_cur_t* cursor);/* out: page cursor */ +/******************************************************************** +Searches the right position for a page cursor. */ +UNIV_INTERN +void +page_cur_search_with_match( +/*=======================*/ + const buf_block_t* block, /* in: buffer block */ + const dict_index_t* index, /* in: record descriptor */ + const dtuple_t* tuple, /* in: data tuple */ + ulint mode, /* in: PAGE_CUR_L, + PAGE_CUR_LE, PAGE_CUR_G, or + PAGE_CUR_GE */ + ulint* iup_matched_fields, + /* in/out: already matched + fields in upper limit record */ + ulint* iup_matched_bytes, + /* in/out: already matched + bytes in a field not yet + completely matched */ + ulint* ilow_matched_fields, + /* in/out: already matched + fields in lower limit record */ + ulint* ilow_matched_bytes, + /* in/out: already matched + bytes in a field not yet + completely matched */ + page_cur_t* cursor);/* out: page cursor */ +/*************************************************************** +Positions a page cursor on a randomly chosen user record on a page. If there +are no user records, sets the cursor on the infimum record. */ +UNIV_INTERN +void +page_cur_open_on_rnd_user_rec( +/*==========================*/ + buf_block_t* block, /* in: page */ + page_cur_t* cursor);/* out: page cursor */ +/*************************************************************** +Parses a log record of a record insert on a page. */ +UNIV_INTERN +byte* +page_cur_parse_insert_rec( +/*======================*/ + /* out: end of log record or NULL */ + ibool is_short,/* in: TRUE if short inserts */ + byte* ptr, /* in: buffer */ + byte* end_ptr,/* in: buffer end */ + buf_block_t* block, /* in: page or NULL */ + dict_index_t* index, /* in: record descriptor */ + mtr_t* mtr); /* in: mtr or NULL */ +/************************************************************** +Parses a log record of copying a record list end to a new created page. */ +UNIV_INTERN +byte* +page_parse_copy_rec_list_to_created_page( +/*=====================================*/ + /* out: end of log record or NULL */ + byte* ptr, /* in: buffer */ + byte* end_ptr,/* in: buffer end */ + buf_block_t* block, /* in: page or NULL */ + dict_index_t* index, /* in: record descriptor */ + mtr_t* mtr); /* in: mtr or NULL */ +/*************************************************************** +Parses log record of a record delete on a page. */ +UNIV_INTERN +byte* +page_cur_parse_delete_rec( +/*======================*/ + /* out: pointer to record end or NULL */ + byte* ptr, /* in: buffer */ + byte* end_ptr,/* in: buffer end */ + buf_block_t* block, /* in: page or NULL */ + dict_index_t* index, /* in: record descriptor */ + mtr_t* mtr); /* in: mtr or NULL */ + +/* Index page cursor */ + +struct page_cur_struct{ + byte* rec; /* pointer to a record on page */ + buf_block_t* block; /* pointer to the block containing rec */ +}; + +#ifndef UNIV_NONINL +#include "page0cur.ic" +#endif + +#endif === added file 'storage/xtradb/include/page0cur.ic' --- a/storage/xtradb/include/page0cur.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/page0cur.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,300 @@ +/***************************************************************************** + +Copyright (c) 1994, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/************************************************************************ +The page cursor + +Created 10/4/1994 Heikki Tuuri +*************************************************************************/ + +#include "page0page.h" +#include "buf0types.h" + +#ifdef UNIV_DEBUG +/************************************************************* +Gets pointer to the page frame where the cursor is positioned. */ +UNIV_INLINE +page_t* +page_cur_get_page( +/*==============*/ + /* out: page */ + page_cur_t* cur) /* in: page cursor */ +{ + ut_ad(cur); + ut_ad(page_align(cur->rec) == cur->block->frame); + + return(page_align(cur->rec)); +} + +/************************************************************* +Gets pointer to the buffer block where the cursor is positioned. */ +UNIV_INLINE +buf_block_t* +page_cur_get_block( +/*===============*/ + /* out: page */ + page_cur_t* cur) /* in: page cursor */ +{ + ut_ad(cur); + ut_ad(page_align(cur->rec) == cur->block->frame); + return(cur->block); +} + +/************************************************************* +Gets pointer to the page frame where the cursor is positioned. */ +UNIV_INLINE +page_zip_des_t* +page_cur_get_page_zip( +/*==================*/ + /* out: page */ + page_cur_t* cur) /* in: page cursor */ +{ + return(buf_block_get_page_zip(page_cur_get_block(cur))); +} + +/************************************************************* +Gets the record where the cursor is positioned. */ +UNIV_INLINE +rec_t* +page_cur_get_rec( +/*=============*/ + /* out: record */ + page_cur_t* cur) /* in: page cursor */ +{ + ut_ad(cur); + ut_ad(page_align(cur->rec) == cur->block->frame); + + return(cur->rec); +} +#endif /* UNIV_DEBUG */ + +/************************************************************* +Sets the cursor object to point before the first user record +on the page. */ +UNIV_INLINE +void +page_cur_set_before_first( +/*======================*/ + const buf_block_t* block, /* in: index page */ + page_cur_t* cur) /* in: cursor */ +{ + cur->block = (buf_block_t*) block; + cur->rec = page_get_infimum_rec(buf_block_get_frame(cur->block)); +} + +/************************************************************* +Sets the cursor object to point after the last user record on +the page. */ +UNIV_INLINE +void +page_cur_set_after_last( +/*====================*/ + const buf_block_t* block, /* in: index page */ + page_cur_t* cur) /* in: cursor */ +{ + cur->block = (buf_block_t*) block; + cur->rec = page_get_supremum_rec(buf_block_get_frame(cur->block)); +} + +/************************************************************* +Returns TRUE if the cursor is before first user record on page. */ +UNIV_INLINE +ibool +page_cur_is_before_first( +/*=====================*/ + /* out: TRUE if at start */ + const page_cur_t* cur) /* in: cursor */ +{ + ut_ad(cur); + ut_ad(page_align(cur->rec) == cur->block->frame); + return(page_rec_is_infimum(cur->rec)); +} + +/************************************************************* +Returns TRUE if the cursor is after last user record. */ +UNIV_INLINE +ibool +page_cur_is_after_last( +/*===================*/ + /* out: TRUE if at end */ + const page_cur_t* cur) /* in: cursor */ +{ + ut_ad(cur); + ut_ad(page_align(cur->rec) == cur->block->frame); + return(page_rec_is_supremum(cur->rec)); +} + +/************************************************************** +Positions the cursor on the given record. */ +UNIV_INLINE +void +page_cur_position( +/*==============*/ + const rec_t* rec, /* in: record on a page */ + const buf_block_t* block, /* in: buffer block containing + the record */ + page_cur_t* cur) /* out: page cursor */ +{ + ut_ad(rec && block && cur); + ut_ad(page_align(rec) == block->frame); + + cur->rec = (rec_t*) rec; + cur->block = (buf_block_t*) block; +} + +/************************************************************** +Invalidates a page cursor by setting the record pointer NULL. */ +UNIV_INLINE +void +page_cur_invalidate( +/*================*/ + page_cur_t* cur) /* out: page cursor */ +{ + ut_ad(cur); + + cur->rec = NULL; + cur->block = NULL; +} + +/************************************************************** +Moves the cursor to the next record on page. */ +UNIV_INLINE +void +page_cur_move_to_next( +/*==================*/ + page_cur_t* cur) /* in/out: cursor; must not be after last */ +{ + ut_ad(!page_cur_is_after_last(cur)); + + cur->rec = page_rec_get_next(cur->rec); +} + +/************************************************************** +Moves the cursor to the previous record on page. */ +UNIV_INLINE +void +page_cur_move_to_prev( +/*==================*/ + page_cur_t* cur) /* in/out: page cursor, not before first */ +{ + ut_ad(!page_cur_is_before_first(cur)); + + cur->rec = page_rec_get_prev(cur->rec); +} + +/******************************************************************** +Searches the right position for a page cursor. */ +UNIV_INLINE +ulint +page_cur_search( +/*============*/ + /* out: number of matched + fields on the left */ + const buf_block_t* block, /* in: buffer block */ + const dict_index_t* index, /* in: record descriptor */ + const dtuple_t* tuple, /* in: data tuple */ + ulint mode, /* in: PAGE_CUR_L, + PAGE_CUR_LE, PAGE_CUR_G, or + PAGE_CUR_GE */ + page_cur_t* cursor) /* out: page cursor */ +{ + ulint low_matched_fields = 0; + ulint low_matched_bytes = 0; + ulint up_matched_fields = 0; + ulint up_matched_bytes = 0; + + ut_ad(dtuple_check_typed(tuple)); + + page_cur_search_with_match(block, index, tuple, mode, + &up_matched_fields, + &up_matched_bytes, + &low_matched_fields, + &low_matched_bytes, + cursor); + return(low_matched_fields); +} + +/*************************************************************** +Inserts a record next to page cursor. Returns pointer to inserted record if +succeed, i.e., enough space available, NULL otherwise. The cursor stays at +the same logical position, but the physical position may change if it is +pointing to a compressed page that was reorganized. */ +UNIV_INLINE +rec_t* +page_cur_tuple_insert( +/*==================*/ + /* out: pointer to record if succeed, NULL + otherwise */ + page_cur_t* cursor, /* in/out: a page cursor */ + const dtuple_t* tuple, /* in: pointer to a data tuple */ + dict_index_t* index, /* in: record descriptor */ + ulint n_ext, /* in: number of externally stored columns */ + mtr_t* mtr) /* in: mini-transaction handle, or NULL */ +{ + mem_heap_t* heap; + ulint* offsets; + ulint size + = rec_get_converted_size(index, tuple, n_ext); + rec_t* rec; + + heap = mem_heap_create(size + + (4 + REC_OFFS_HEADER_SIZE + + dtuple_get_n_fields(tuple)) + * sizeof *offsets); + rec = rec_convert_dtuple_to_rec((byte*) mem_heap_alloc(heap, size), + index, tuple, n_ext); + offsets = rec_get_offsets(rec, index, NULL, ULINT_UNDEFINED, &heap); + + if (buf_block_get_page_zip(cursor->block)) { + rec = page_cur_insert_rec_zip(&cursor->rec, cursor->block, + index, rec, offsets, mtr); + } else { + rec = page_cur_insert_rec_low(cursor->rec, + index, rec, offsets, mtr); + } + + mem_heap_free(heap); + return(rec); +} + +/*************************************************************** +Inserts a record next to page cursor. Returns pointer to inserted record if +succeed, i.e., enough space available, NULL otherwise. The cursor stays at +the same logical position, but the physical position may change if it is +pointing to a compressed page that was reorganized. */ +UNIV_INLINE +rec_t* +page_cur_rec_insert( +/*================*/ + /* out: pointer to record if succeed, NULL + otherwise */ + page_cur_t* cursor, /* in/out: a page cursor */ + const rec_t* rec, /* in: record to insert */ + dict_index_t* index, /* in: record descriptor */ + ulint* offsets,/* in/out: rec_get_offsets(rec, index) */ + mtr_t* mtr) /* in: mini-transaction handle, or NULL */ +{ + if (buf_block_get_page_zip(cursor->block)) { + return(page_cur_insert_rec_zip(&cursor->rec, cursor->block, + index, rec, offsets, mtr)); + } else { + return(page_cur_insert_rec_low(cursor->rec, + index, rec, offsets, mtr)); + } +} + === added file 'storage/xtradb/include/page0page.h' --- a/storage/xtradb/include/page0page.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/page0page.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,1019 @@ +/***************************************************************************** + +Copyright (c) 1994, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Index page routines + +Created 2/2/1994 Heikki Tuuri +*******************************************************/ + +#ifndef page0page_h +#define page0page_h + +#include "univ.i" + +#include "page0types.h" +#include "fil0fil.h" +#include "buf0buf.h" +#include "data0data.h" +#include "dict0dict.h" +#include "rem0rec.h" +#include "fsp0fsp.h" +#include "mtr0mtr.h" + +#ifdef UNIV_MATERIALIZE +#undef UNIV_INLINE +#define UNIV_INLINE +#endif + +/* PAGE HEADER + =========== + +Index page header starts at the first offset left free by the FIL-module */ + +typedef byte page_header_t; + +#define PAGE_HEADER FSEG_PAGE_DATA /* index page header starts at this + offset */ +/*-----------------------------*/ +#define PAGE_N_DIR_SLOTS 0 /* number of slots in page directory */ +#define PAGE_HEAP_TOP 2 /* pointer to record heap top */ +#define PAGE_N_HEAP 4 /* number of records in the heap, + bit 15=flag: new-style compact page format */ +#define PAGE_FREE 6 /* pointer to start of page free record list */ +#define PAGE_GARBAGE 8 /* number of bytes in deleted records */ +#define PAGE_LAST_INSERT 10 /* pointer to the last inserted record, or + NULL if this info has been reset by a delete, + for example */ +#define PAGE_DIRECTION 12 /* last insert direction: PAGE_LEFT, ... */ +#define PAGE_N_DIRECTION 14 /* number of consecutive inserts to the same + direction */ +#define PAGE_N_RECS 16 /* number of user records on the page */ +#define PAGE_MAX_TRX_ID 18 /* highest id of a trx which may have modified + a record on the page; a dulint; defined only + in secondary indexes; specifically, not in an + ibuf tree; NOTE: this may be modified only + when the thread has an x-latch to the page, + and ALSO an x-latch to btr_search_latch + if there is a hash index to the page! */ +#define PAGE_HEADER_PRIV_END 26 /* end of private data structure of the page + header which are set in a page create */ +/*----*/ +#define PAGE_LEVEL 26 /* level of the node in an index tree; the + leaf level is the level 0 */ +#define PAGE_INDEX_ID 28 /* index id where the page belongs */ +#define PAGE_BTR_SEG_LEAF 36 /* file segment header for the leaf pages in + a B-tree: defined only on the root page of a + B-tree, but not in the root of an ibuf tree */ +#define PAGE_BTR_IBUF_FREE_LIST PAGE_BTR_SEG_LEAF +#define PAGE_BTR_IBUF_FREE_LIST_NODE PAGE_BTR_SEG_LEAF + /* in the place of PAGE_BTR_SEG_LEAF and _TOP + there is a free list base node if the page is + the root page of an ibuf tree, and at the same + place is the free list node if the page is in + a free list */ +#define PAGE_BTR_SEG_TOP (36 + FSEG_HEADER_SIZE) + /* file segment header for the non-leaf pages + in a B-tree: defined only on the root page of + a B-tree, but not in the root of an ibuf + tree */ +/*----*/ +#define PAGE_DATA (PAGE_HEADER + 36 + 2 * FSEG_HEADER_SIZE) + /* start of data on the page */ + +#define PAGE_OLD_INFIMUM (PAGE_DATA + 1 + REC_N_OLD_EXTRA_BYTES) + /* offset of the page infimum record on an + old-style page */ +#define PAGE_OLD_SUPREMUM (PAGE_DATA + 2 + 2 * REC_N_OLD_EXTRA_BYTES + 8) + /* offset of the page supremum record on an + old-style page */ +#define PAGE_OLD_SUPREMUM_END (PAGE_OLD_SUPREMUM + 9) + /* offset of the page supremum record end on + an old-style page */ +#define PAGE_NEW_INFIMUM (PAGE_DATA + REC_N_NEW_EXTRA_BYTES) + /* offset of the page infimum record on a + new-style compact page */ +#define PAGE_NEW_SUPREMUM (PAGE_DATA + 2 * REC_N_NEW_EXTRA_BYTES + 8) + /* offset of the page supremum record on a + new-style compact page */ +#define PAGE_NEW_SUPREMUM_END (PAGE_NEW_SUPREMUM + 8) + /* offset of the page supremum record end on + a new-style compact page */ +/*-----------------------------*/ + +/* Heap numbers */ +#define PAGE_HEAP_NO_INFIMUM 0 /* page infimum */ +#define PAGE_HEAP_NO_SUPREMUM 1 /* page supremum */ +#define PAGE_HEAP_NO_USER_LOW 2 /* first user record in + creation (insertion) order, + not necessarily collation order; + this record may have been deleted */ + +/* Directions of cursor movement */ +#define PAGE_LEFT 1 +#define PAGE_RIGHT 2 +#define PAGE_SAME_REC 3 +#define PAGE_SAME_PAGE 4 +#define PAGE_NO_DIRECTION 5 + +/* PAGE DIRECTORY + ============== +*/ + +typedef byte page_dir_slot_t; +typedef page_dir_slot_t page_dir_t; + +/* Offset of the directory start down from the page end. We call the +slot with the highest file address directory start, as it points to +the first record in the list of records. */ +#define PAGE_DIR FIL_PAGE_DATA_END + +/* We define a slot in the page directory as two bytes */ +#define PAGE_DIR_SLOT_SIZE 2 + +/* The offset of the physically lower end of the directory, counted from +page end, when the page is empty */ +#define PAGE_EMPTY_DIR_START (PAGE_DIR + 2 * PAGE_DIR_SLOT_SIZE) + +/* The maximum and minimum number of records owned by a directory slot. The +number may drop below the minimum in the first and the last slot in the +directory. */ +#define PAGE_DIR_SLOT_MAX_N_OWNED 8 +#define PAGE_DIR_SLOT_MIN_N_OWNED 4 + +/**************************************************************** +Gets the start of a page. */ +UNIV_INLINE +page_t* +page_align( +/*=======*/ + /* out: start of the page */ + const void* ptr) /* in: pointer to page frame */ + __attribute__((const)); +/**************************************************************** +Gets the offset within a page. */ +UNIV_INLINE +ulint +page_offset( +/*========*/ + /* out: offset from the start of the page */ + const void* ptr) /* in: pointer to page frame */ + __attribute__((const)); +/***************************************************************** +Returns the max trx id field value. */ +UNIV_INLINE +dulint +page_get_max_trx_id( +/*================*/ + const page_t* page); /* in: page */ +/***************************************************************** +Sets the max trx id field value. */ +UNIV_INTERN +void +page_set_max_trx_id( +/*================*/ + buf_block_t* block, /* in/out: page */ + page_zip_des_t* page_zip,/* in/out: compressed page, or NULL */ + dulint trx_id);/* in: transaction id */ +/***************************************************************** +Sets the max trx id field value if trx_id is bigger than the previous +value. */ +UNIV_INLINE +void +page_update_max_trx_id( +/*===================*/ + buf_block_t* block, /* in/out: page */ + page_zip_des_t* page_zip,/* in/out: compressed page whose + uncompressed part will be updated, or NULL */ + dulint trx_id);/* in: transaction id */ +/***************************************************************** +Reads the given header field. */ +UNIV_INLINE +ulint +page_header_get_field( +/*==================*/ + const page_t* page, /* in: page */ + ulint field); /* in: PAGE_N_DIR_SLOTS, ... */ +/***************************************************************** +Sets the given header field. */ +UNIV_INLINE +void +page_header_set_field( +/*==================*/ + page_t* page, /* in/out: page */ + page_zip_des_t* page_zip,/* in/out: compressed page whose + uncompressed part will be updated, or NULL */ + ulint field, /* in: PAGE_N_DIR_SLOTS, ... */ + ulint val); /* in: value */ +/***************************************************************** +Returns the offset stored in the given header field. */ +UNIV_INLINE +ulint +page_header_get_offs( +/*=================*/ + /* out: offset from the start of the page, + or 0 */ + const page_t* page, /* in: page */ + ulint field) /* in: PAGE_FREE, ... */ + __attribute__((nonnull, pure)); + +/***************************************************************** +Returns the pointer stored in the given header field, or NULL. */ +#define page_header_get_ptr(page, field) \ + (page_header_get_offs(page, field) \ + ? page + page_header_get_offs(page, field) : NULL) +/***************************************************************** +Sets the pointer stored in the given header field. */ +UNIV_INLINE +void +page_header_set_ptr( +/*================*/ + page_t* page, /* in/out: page */ + page_zip_des_t* page_zip,/* in/out: compressed page whose + uncompressed part will be updated, or NULL */ + ulint field, /* in/out: PAGE_FREE, ... */ + const byte* ptr); /* in: pointer or NULL*/ +/***************************************************************** +Resets the last insert info field in the page header. Writes to mlog +about this operation. */ +UNIV_INLINE +void +page_header_reset_last_insert( +/*==========================*/ + page_t* page, /* in: page */ + page_zip_des_t* page_zip,/* in/out: compressed page whose + uncompressed part will be updated, or NULL */ + mtr_t* mtr); /* in: mtr */ +/**************************************************************** +Gets the offset of the first record on the page. */ +UNIV_INLINE +ulint +page_get_infimum_offset( +/*====================*/ + /* out: offset of the first record + in record list, relative from page */ + const page_t* page); /* in: page which must have record(s) */ +/**************************************************************** +Gets the offset of the last record on the page. */ +UNIV_INLINE +ulint +page_get_supremum_offset( +/*=====================*/ + /* out: offset of the last record in + record list, relative from page */ + const page_t* page); /* in: page which must have record(s) */ +#define page_get_infimum_rec(page) ((page) + page_get_infimum_offset(page)) +#define page_get_supremum_rec(page) ((page) + page_get_supremum_offset(page)) +/**************************************************************** +Returns the middle record of record list. If there are an even number +of records in the list, returns the first record of upper half-list. */ +UNIV_INTERN +rec_t* +page_get_middle_rec( +/*================*/ + /* out: middle record */ + page_t* page); /* in: page */ +/***************************************************************** +Compares a data tuple to a physical record. Differs from the function +cmp_dtuple_rec_with_match in the way that the record must reside on an +index page, and also page infimum and supremum records can be given in +the parameter rec. These are considered as the negative infinity and +the positive infinity in the alphabetical order. */ +UNIV_INLINE +int +page_cmp_dtuple_rec_with_match( +/*===========================*/ + /* out: 1, 0, -1, if dtuple is greater, equal, + less than rec, respectively, when only the + common first fields are compared */ + const dtuple_t* dtuple, /* in: data tuple */ + const rec_t* rec, /* in: physical record on a page; may also + be page infimum or supremum, in which case + matched-parameter values below are not + affected */ + const ulint* offsets,/* in: array returned by rec_get_offsets() */ + ulint* matched_fields, /* in/out: number of already completely + matched fields; when function returns + contains the value for current comparison */ + ulint* matched_bytes); /* in/out: number of already matched + bytes within the first field not completely + matched; when function returns contains the + value for current comparison */ +/***************************************************************** +Gets the page number. */ +UNIV_INLINE +ulint +page_get_page_no( +/*=============*/ + /* out: page number */ + const page_t* page); /* in: page */ +/***************************************************************** +Gets the tablespace identifier. */ +UNIV_INLINE +ulint +page_get_space_id( +/*==============*/ + /* out: space id */ + const page_t* page); /* in: page */ +/***************************************************************** +Gets the number of user records on page (the infimum and supremum records +are not user records). */ +UNIV_INLINE +ulint +page_get_n_recs( +/*============*/ + /* out: number of user records */ + const page_t* page); /* in: index page */ +/******************************************************************* +Returns the number of records before the given record in chain. +The number includes infimum and supremum records. */ +UNIV_INTERN +ulint +page_rec_get_n_recs_before( +/*=======================*/ + /* out: number of records */ + const rec_t* rec); /* in: the physical record */ +/***************************************************************** +Gets the number of records in the heap. */ +UNIV_INLINE +ulint +page_dir_get_n_heap( +/*================*/ + /* out: number of user records */ + const page_t* page); /* in: index page */ +/***************************************************************** +Sets the number of records in the heap. */ +UNIV_INLINE +void +page_dir_set_n_heap( +/*================*/ + page_t* page, /* in/out: index page */ + page_zip_des_t* page_zip,/* in/out: compressed page whose + uncompressed part will be updated, or NULL. + Note that the size of the dense page directory + in the compressed page trailer is + n_heap * PAGE_ZIP_DIR_SLOT_SIZE. */ + ulint n_heap);/* in: number of records */ +/***************************************************************** +Gets the number of dir slots in directory. */ +UNIV_INLINE +ulint +page_dir_get_n_slots( +/*=================*/ + /* out: number of slots */ + const page_t* page); /* in: index page */ +/***************************************************************** +Sets the number of dir slots in directory. */ +UNIV_INLINE +void +page_dir_set_n_slots( +/*=================*/ + page_t* page, /* in/out: page */ + page_zip_des_t* page_zip,/* in/out: compressed page whose + uncompressed part will be updated, or NULL */ + ulint n_slots);/* in: number of slots */ +#ifdef UNIV_DEBUG +/***************************************************************** +Gets pointer to nth directory slot. */ +UNIV_INLINE +page_dir_slot_t* +page_dir_get_nth_slot( +/*==================*/ + /* out: pointer to dir slot */ + const page_t* page, /* in: index page */ + ulint n); /* in: position */ +#else /* UNIV_DEBUG */ +# define page_dir_get_nth_slot(page, n) \ + ((page) + UNIV_PAGE_SIZE - PAGE_DIR \ + - (n + 1) * PAGE_DIR_SLOT_SIZE) +#endif /* UNIV_DEBUG */ +/****************************************************************** +Used to check the consistency of a record on a page. */ +UNIV_INLINE +ibool +page_rec_check( +/*===========*/ + /* out: TRUE if succeed */ + const rec_t* rec); /* in: record */ +/******************************************************************* +Gets the record pointed to by a directory slot. */ +UNIV_INLINE +const rec_t* +page_dir_slot_get_rec( +/*==================*/ + /* out: pointer to record */ + const page_dir_slot_t* slot); /* in: directory slot */ +/******************************************************************* +This is used to set the record offset in a directory slot. */ +UNIV_INLINE +void +page_dir_slot_set_rec( +/*==================*/ + page_dir_slot_t* slot, /* in: directory slot */ + rec_t* rec); /* in: record on the page */ +/******************************************************************* +Gets the number of records owned by a directory slot. */ +UNIV_INLINE +ulint +page_dir_slot_get_n_owned( +/*======================*/ + /* out: number of records */ + const page_dir_slot_t* slot); /* in: page directory slot */ +/******************************************************************* +This is used to set the owned records field of a directory slot. */ +UNIV_INLINE +void +page_dir_slot_set_n_owned( +/*======================*/ + page_dir_slot_t*slot, /* in/out: directory slot */ + page_zip_des_t* page_zip,/* in/out: compressed page, or NULL */ + ulint n); /* in: number of records owned by the slot */ +/**************************************************************** +Calculates the space reserved for directory slots of a given +number of records. The exact value is a fraction number +n * PAGE_DIR_SLOT_SIZE / PAGE_DIR_SLOT_MIN_N_OWNED, and it is +rounded upwards to an integer. */ +UNIV_INLINE +ulint +page_dir_calc_reserved_space( +/*=========================*/ + ulint n_recs); /* in: number of records */ +/******************************************************************* +Looks for the directory slot which owns the given record. */ +UNIV_INTERN +ulint +page_dir_find_owner_slot( +/*=====================*/ + /* out: the directory slot number */ + const rec_t* rec); /* in: the physical record */ +/**************************************************************** +Determine whether the page is in new-style compact format. */ +UNIV_INLINE +ulint +page_is_comp( +/*=========*/ + /* out: nonzero if the page is in compact + format, zero if it is in old-style format */ + const page_t* page); /* in: index page */ +/**************************************************************** +TRUE if the record is on a page in compact format. */ +UNIV_INLINE +ulint +page_rec_is_comp( +/*=============*/ + /* out: nonzero if in compact format */ + const rec_t* rec); /* in: record */ +/******************************************************************* +Returns the heap number of a record. */ +UNIV_INLINE +ulint +page_rec_get_heap_no( +/*=================*/ + /* out: heap number */ + const rec_t* rec); /* in: the physical record */ +/**************************************************************** +Determine whether the page is a B-tree leaf. */ +UNIV_INLINE +ibool +page_is_leaf( +/*=========*/ + /* out: TRUE if the page is a B-tree leaf */ + const page_t* page) /* in: page */ + __attribute__((nonnull, pure)); +/**************************************************************** +Gets the pointer to the next record on the page. */ +UNIV_INLINE +const rec_t* +page_rec_get_next_low( +/*==================*/ + /* out: pointer to next record */ + const rec_t* rec, /* in: pointer to record */ + ulint comp); /* in: nonzero=compact page layout */ +/**************************************************************** +Gets the pointer to the next record on the page. */ +UNIV_INLINE +rec_t* +page_rec_get_next( +/*==============*/ + /* out: pointer to next record */ + rec_t* rec); /* in: pointer to record */ +/**************************************************************** +Gets the pointer to the next record on the page. */ +UNIV_INLINE +const rec_t* +page_rec_get_next_const( +/*====================*/ + /* out: pointer to next record */ + const rec_t* rec); /* in: pointer to record */ +/**************************************************************** +Sets the pointer to the next record on the page. */ +UNIV_INLINE +void +page_rec_set_next( +/*==============*/ + rec_t* rec, /* in: pointer to record, + must not be page supremum */ + rec_t* next); /* in: pointer to next record, + must not be page infimum */ +/**************************************************************** +Gets the pointer to the previous record. */ +UNIV_INLINE +const rec_t* +page_rec_get_prev_const( +/*====================*/ + /* out: pointer to previous record */ + const rec_t* rec); /* in: pointer to record, must not be page + infimum */ +/**************************************************************** +Gets the pointer to the previous record. */ +UNIV_INLINE +rec_t* +page_rec_get_prev( +/*==============*/ + /* out: pointer to previous record */ + rec_t* rec); /* in: pointer to record, + must not be page infimum */ +/**************************************************************** +TRUE if the record is a user record on the page. */ +UNIV_INLINE +ibool +page_rec_is_user_rec_low( +/*=====================*/ + /* out: TRUE if a user record */ + ulint offset) /* in: record offset on page */ + __attribute__((const)); +/**************************************************************** +TRUE if the record is the supremum record on a page. */ +UNIV_INLINE +ibool +page_rec_is_supremum_low( +/*=====================*/ + /* out: TRUE if the supremum record */ + ulint offset) /* in: record offset on page */ + __attribute__((const)); +/**************************************************************** +TRUE if the record is the infimum record on a page. */ +UNIV_INLINE +ibool +page_rec_is_infimum_low( +/*====================*/ + /* out: TRUE if the infimum record */ + ulint offset) /* in: record offset on page */ + __attribute__((const)); + +/**************************************************************** +TRUE if the record is a user record on the page. */ +UNIV_INLINE +ibool +page_rec_is_user_rec( +/*=================*/ + /* out: TRUE if a user record */ + const rec_t* rec) /* in: record */ + __attribute__((const)); +/**************************************************************** +TRUE if the record is the supremum record on a page. */ +UNIV_INLINE +ibool +page_rec_is_supremum( +/*=================*/ + /* out: TRUE if the supremum record */ + const rec_t* rec) /* in: record */ + __attribute__((const)); + +/**************************************************************** +TRUE if the record is the infimum record on a page. */ +UNIV_INLINE +ibool +page_rec_is_infimum( +/*================*/ + /* out: TRUE if the infimum record */ + const rec_t* rec) /* in: record */ + __attribute__((const)); +/******************************************************************* +Looks for the record which owns the given record. */ +UNIV_INLINE +rec_t* +page_rec_find_owner_rec( +/*====================*/ + /* out: the owner record */ + rec_t* rec); /* in: the physical record */ +/*************************************************************************** +This is a low-level operation which is used in a database index creation +to update the page number of a created B-tree to a data dictionary +record. */ +UNIV_INTERN +void +page_rec_write_index_page_no( +/*=========================*/ + rec_t* rec, /* in: record to update */ + ulint i, /* in: index of the field to update */ + ulint page_no,/* in: value to write */ + mtr_t* mtr); /* in: mtr */ +/**************************************************************** +Returns the maximum combined size of records which can be inserted on top +of record heap. */ +UNIV_INLINE +ulint +page_get_max_insert_size( +/*=====================*/ + /* out: maximum combined size for + inserted records */ + const page_t* page, /* in: index page */ + ulint n_recs);/* in: number of records */ +/**************************************************************** +Returns the maximum combined size of records which can be inserted on top +of record heap if page is first reorganized. */ +UNIV_INLINE +ulint +page_get_max_insert_size_after_reorganize( +/*======================================*/ + /* out: maximum combined size for + inserted records */ + const page_t* page, /* in: index page */ + ulint n_recs);/* in: number of records */ +/***************************************************************** +Calculates free space if a page is emptied. */ +UNIV_INLINE +ulint +page_get_free_space_of_empty( +/*=========================*/ + /* out: free space */ + ulint comp) /* in: nonzero=compact page format */ + __attribute__((const)); +/************************************************************** +Returns the base extra size of a physical record. This is the +size of the fixed header, independent of the record size. */ +UNIV_INLINE +ulint +page_rec_get_base_extra_size( +/*=========================*/ + /* out: REC_N_NEW_EXTRA_BYTES + or REC_N_OLD_EXTRA_BYTES */ + const rec_t* rec); /* in: physical record */ +/**************************************************************** +Returns the sum of the sizes of the records in the record list +excluding the infimum and supremum records. */ +UNIV_INLINE +ulint +page_get_data_size( +/*===============*/ + /* out: data in bytes */ + const page_t* page); /* in: index page */ +/**************************************************************** +Allocates a block of memory from the head of the free list +of an index page. */ +UNIV_INLINE +void +page_mem_alloc_free( +/*================*/ + page_t* page, /* in/out: index page */ + page_zip_des_t* page_zip,/* in/out: compressed page with enough + space available for inserting the record, + or NULL */ + rec_t* next_rec,/* in: pointer to the new head of the + free record list */ + ulint need); /* in: number of bytes allocated */ +/**************************************************************** +Allocates a block of memory from the heap of an index page. */ +UNIV_INTERN +byte* +page_mem_alloc_heap( +/*================*/ + /* out: pointer to start of allocated + buffer, or NULL if allocation fails */ + page_t* page, /* in/out: index page */ + page_zip_des_t* page_zip,/* in/out: compressed page with enough + space available for inserting the record, + or NULL */ + ulint need, /* in: total number of bytes needed */ + ulint* heap_no);/* out: this contains the heap number + of the allocated record + if allocation succeeds */ +/**************************************************************** +Puts a record to free list. */ +UNIV_INLINE +void +page_mem_free( +/*==========*/ + page_t* page, /* in/out: index page */ + page_zip_des_t* page_zip,/* in/out: compressed page, or NULL */ + rec_t* rec, /* in: pointer to the (origin of) record */ + dict_index_t* index, /* in: index of rec */ + const ulint* offsets);/* in: array returned by rec_get_offsets() */ +/************************************************************** +Create an uncompressed B-tree index page. */ +UNIV_INTERN +page_t* +page_create( +/*========*/ + /* out: pointer to the page */ + buf_block_t* block, /* in: a buffer block where the + page is created */ + mtr_t* mtr, /* in: mini-transaction handle */ + ulint comp); /* in: nonzero=compact page format */ +/************************************************************** +Create a compressed B-tree index page. */ +UNIV_INTERN +page_t* +page_create_zip( +/*============*/ + /* out: pointer to the page */ + buf_block_t* block, /* in/out: a buffer frame where the + page is created */ + dict_index_t* index, /* in: the index of the page */ + ulint level, /* in: the B-tree level of the page */ + mtr_t* mtr); /* in: mini-transaction handle */ + +/***************************************************************** +Differs from page_copy_rec_list_end, because this function does not +touch the lock table and max trx id on page or compress the page. */ +UNIV_INTERN +void +page_copy_rec_list_end_no_locks( +/*============================*/ + buf_block_t* new_block, /* in: index page to copy to */ + buf_block_t* block, /* in: index page of rec */ + rec_t* rec, /* in: record on page */ + dict_index_t* index, /* in: record descriptor */ + mtr_t* mtr); /* in: mtr */ +/***************************************************************** +Copies records from page to new_page, from the given record onward, +including that record. Infimum and supremum records are not copied. +The records are copied to the start of the record list on new_page. */ +UNIV_INTERN +rec_t* +page_copy_rec_list_end( +/*===================*/ + /* out: pointer to the original + successor of the infimum record + on new_page, or NULL on zip overflow + (new_block will be decompressed) */ + buf_block_t* new_block, /* in/out: index page to copy to */ + buf_block_t* block, /* in: index page containing rec */ + rec_t* rec, /* in: record on page */ + dict_index_t* index, /* in: record descriptor */ + mtr_t* mtr) /* in: mtr */ + __attribute__((nonnull)); +/***************************************************************** +Copies records from page to new_page, up to the given record, NOT +including that record. Infimum and supremum records are not copied. +The records are copied to the end of the record list on new_page. */ +UNIV_INTERN +rec_t* +page_copy_rec_list_start( +/*=====================*/ + /* out: pointer to the original + predecessor of the supremum record + on new_page, or NULL on zip overflow + (new_block will be decompressed) */ + buf_block_t* new_block, /* in/out: index page to copy to */ + buf_block_t* block, /* in: index page containing rec */ + rec_t* rec, /* in: record on page */ + dict_index_t* index, /* in: record descriptor */ + mtr_t* mtr) /* in: mtr */ + __attribute__((nonnull)); +/***************************************************************** +Deletes records from a page from a given record onward, including that record. +The infimum and supremum records are not deleted. */ +UNIV_INTERN +void +page_delete_rec_list_end( +/*=====================*/ + rec_t* rec, /* in: pointer to record on page */ + buf_block_t* block, /* in: buffer block of the page */ + dict_index_t* index, /* in: record descriptor */ + ulint n_recs, /* in: number of records to delete, + or ULINT_UNDEFINED if not known */ + ulint size, /* in: the sum of the sizes of the + records in the end of the chain to + delete, or ULINT_UNDEFINED if not known */ + mtr_t* mtr) /* in: mtr */ + __attribute__((nonnull)); +/***************************************************************** +Deletes records from page, up to the given record, NOT including +that record. Infimum and supremum records are not deleted. */ +UNIV_INTERN +void +page_delete_rec_list_start( +/*=======================*/ + rec_t* rec, /* in: record on page */ + buf_block_t* block, /* in: buffer block of the page */ + dict_index_t* index, /* in: record descriptor */ + mtr_t* mtr) /* in: mtr */ + __attribute__((nonnull)); +/***************************************************************** +Moves record list end to another page. Moved records include +split_rec. */ +UNIV_INTERN +ibool +page_move_rec_list_end( +/*===================*/ + /* out: TRUE on success; FALSE on + compression failure + (new_block will be decompressed) */ + buf_block_t* new_block, /* in/out: index page where to move */ + buf_block_t* block, /* in: index page from where to move */ + rec_t* split_rec, /* in: first record to move */ + dict_index_t* index, /* in: record descriptor */ + mtr_t* mtr) /* in: mtr */ + __attribute__((nonnull(1, 2, 4, 5))); +/***************************************************************** +Moves record list start to another page. Moved records do not include +split_rec. */ +UNIV_INTERN +ibool +page_move_rec_list_start( +/*=====================*/ + /* out: TRUE on success; FALSE on + compression failure */ + buf_block_t* new_block, /* in/out: index page where to move */ + buf_block_t* block, /* in/out: page containing split_rec */ + rec_t* split_rec, /* in: first record not to move */ + dict_index_t* index, /* in: record descriptor */ + mtr_t* mtr) /* in: mtr */ + __attribute__((nonnull(1, 2, 4, 5))); +/******************************************************************** +Splits a directory slot which owns too many records. */ +UNIV_INTERN +void +page_dir_split_slot( +/*================*/ + page_t* page, /* in: index page */ + page_zip_des_t* page_zip,/* in/out: compressed page whose + uncompressed part will be written, or NULL */ + ulint slot_no)/* in: the directory slot */ + __attribute__((nonnull(1))); +/***************************************************************** +Tries to balance the given directory slot with too few records +with the upper neighbor, so that there are at least the minimum number +of records owned by the slot; this may result in the merging of +two slots. */ +UNIV_INTERN +void +page_dir_balance_slot( +/*==================*/ + page_t* page, /* in/out: index page */ + page_zip_des_t* page_zip,/* in/out: compressed page, or NULL */ + ulint slot_no)/* in: the directory slot */ + __attribute__((nonnull(1))); +/************************************************************** +Parses a log record of a record list end or start deletion. */ +UNIV_INTERN +byte* +page_parse_delete_rec_list( +/*=======================*/ + /* out: end of log record or NULL */ + byte type, /* in: MLOG_LIST_END_DELETE, + MLOG_LIST_START_DELETE, + MLOG_COMP_LIST_END_DELETE or + MLOG_COMP_LIST_START_DELETE */ + byte* ptr, /* in: buffer */ + byte* end_ptr,/* in: buffer end */ + buf_block_t* block, /* in/out: buffer block or NULL */ + dict_index_t* index, /* in: record descriptor */ + mtr_t* mtr); /* in: mtr or NULL */ +/*************************************************************** +Parses a redo log record of creating a page. */ +UNIV_INTERN +byte* +page_parse_create( +/*==============*/ + /* out: end of log record or NULL */ + byte* ptr, /* in: buffer */ + byte* end_ptr,/* in: buffer end */ + ulint comp, /* in: nonzero=compact page format */ + buf_block_t* block, /* in: block or NULL */ + mtr_t* mtr); /* in: mtr or NULL */ +/**************************************************************** +Prints record contents including the data relevant only in +the index page context. */ +UNIV_INTERN +void +page_rec_print( +/*===========*/ + const rec_t* rec, /* in: physical record */ + const ulint* offsets);/* in: record descriptor */ +/******************************************************************* +This is used to print the contents of the directory for +debugging purposes. */ +UNIV_INTERN +void +page_dir_print( +/*===========*/ + page_t* page, /* in: index page */ + ulint pr_n); /* in: print n first and n last entries */ +/******************************************************************* +This is used to print the contents of the page record list for +debugging purposes. */ +UNIV_INTERN +void +page_print_list( +/*============*/ + buf_block_t* block, /* in: index page */ + dict_index_t* index, /* in: dictionary index of the page */ + ulint pr_n); /* in: print n first and n last entries */ +/******************************************************************* +Prints the info in a page header. */ +UNIV_INTERN +void +page_header_print( +/*==============*/ + const page_t* page); +/******************************************************************* +This is used to print the contents of the page for +debugging purposes. */ +UNIV_INTERN +void +page_print( +/*=======*/ + buf_block_t* block, /* in: index page */ + dict_index_t* index, /* in: dictionary index of the page */ + ulint dn, /* in: print dn first and last entries + in directory */ + ulint rn); /* in: print rn first and last records + in directory */ +/******************************************************************* +The following is used to validate a record on a page. This function +differs from rec_validate as it can also check the n_owned field and +the heap_no field. */ +UNIV_INTERN +ibool +page_rec_validate( +/*==============*/ + /* out: TRUE if ok */ + rec_t* rec, /* in: physical record */ + const ulint* offsets);/* in: array returned by rec_get_offsets() */ +/******************************************************************* +Checks that the first directory slot points to the infimum record and +the last to the supremum. This function is intended to track if the +bug fixed in 4.0.14 has caused corruption to users' databases. */ +UNIV_INTERN +void +page_check_dir( +/*===========*/ + const page_t* page); /* in: index page */ +/******************************************************************* +This function checks the consistency of an index page when we do not +know the index. This is also resilient so that this should never crash +even if the page is total garbage. */ +UNIV_INTERN +ibool +page_simple_validate_old( +/*=====================*/ + /* out: TRUE if ok */ + page_t* page); /* in: old-style index page */ +/******************************************************************* +This function checks the consistency of an index page when we do not +know the index. This is also resilient so that this should never crash +even if the page is total garbage. */ +UNIV_INTERN +ibool +page_simple_validate_new( +/*=====================*/ + /* out: TRUE if ok */ + page_t* block); /* in: new-style index page */ +/******************************************************************* +This function checks the consistency of an index page. */ +UNIV_INTERN +ibool +page_validate( +/*==========*/ + /* out: TRUE if ok */ + page_t* page, /* in: index page */ + dict_index_t* index); /* in: data dictionary index containing + the page record type definition */ +/******************************************************************* +Looks in the page record list for a record with the given heap number. */ + +const rec_t* +page_find_rec_with_heap_no( +/*=======================*/ + /* out: record, NULL if not found */ + const page_t* page, /* in: index page */ + ulint heap_no);/* in: heap number */ + +#ifdef UNIV_MATERIALIZE +#undef UNIV_INLINE +#define UNIV_INLINE UNIV_INLINE_ORIGINAL +#endif + +#ifndef UNIV_NONINL +#include "page0page.ic" +#endif + +#endif === added file 'storage/xtradb/include/page0page.ic' --- a/storage/xtradb/include/page0page.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/page0page.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,1060 @@ +/***************************************************************************** + +Copyright (c) 1994, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Index page routines + +Created 2/2/1994 Heikki Tuuri +*******************************************************/ + +#include "mach0data.h" +#include "rem0cmp.h" +#include "mtr0log.h" +#include "page0zip.h" + +#ifdef UNIV_MATERIALIZE +#undef UNIV_INLINE +#define UNIV_INLINE +#endif + +/**************************************************************** +Gets the start of a page. */ +UNIV_INLINE +page_t* +page_align( +/*=======*/ + /* out: start of the page */ + const void* ptr) /* in: pointer to page frame */ +{ + return((page_t*) ut_align_down(ptr, UNIV_PAGE_SIZE)); +} +/**************************************************************** +Gets the offset within a page. */ +UNIV_INLINE +ulint +page_offset( +/*========*/ + /* out: offset from the start of the page */ + const void* ptr) /* in: pointer to page frame */ +{ + return(ut_align_offset(ptr, UNIV_PAGE_SIZE)); +} +/***************************************************************** +Returns the max trx id field value. */ +UNIV_INLINE +dulint +page_get_max_trx_id( +/*================*/ + const page_t* page) /* in: page */ +{ + ut_ad(page); + + return(mach_read_from_8(page + PAGE_HEADER + PAGE_MAX_TRX_ID)); +} + +/***************************************************************** +Sets the max trx id field value if trx_id is bigger than the previous +value. */ +UNIV_INLINE +void +page_update_max_trx_id( +/*===================*/ + buf_block_t* block, /* in/out: page */ + page_zip_des_t* page_zip,/* in/out: compressed page whose + uncompressed part will be updated, or NULL */ + dulint trx_id) /* in: transaction id */ +{ + ut_ad(block); + + if (ut_dulint_cmp(page_get_max_trx_id(buf_block_get_frame(block)), + trx_id) < 0) { + + page_set_max_trx_id(block, page_zip, trx_id); + } +} + +/***************************************************************** +Reads the given header field. */ +UNIV_INLINE +ulint +page_header_get_field( +/*==================*/ + const page_t* page, /* in: page */ + ulint field) /* in: PAGE_LEVEL, ... */ +{ + ut_ad(page); + ut_ad(field <= PAGE_INDEX_ID); + + return(mach_read_from_2(page + PAGE_HEADER + field)); +} + +/***************************************************************** +Sets the given header field. */ +UNIV_INLINE +void +page_header_set_field( +/*==================*/ + page_t* page, /* in/out: page */ + page_zip_des_t* page_zip,/* in/out: compressed page whose + uncompressed part will be updated, or NULL */ + ulint field, /* in: PAGE_N_DIR_SLOTS, ... */ + ulint val) /* in: value */ +{ + ut_ad(page); + ut_ad(field <= PAGE_N_RECS); + ut_ad(field == PAGE_N_HEAP || val < UNIV_PAGE_SIZE); + ut_ad(field != PAGE_N_HEAP || (val & 0x7fff) < UNIV_PAGE_SIZE); + + mach_write_to_2(page + PAGE_HEADER + field, val); + if (UNIV_LIKELY_NULL(page_zip)) { + page_zip_write_header(page_zip, + page + PAGE_HEADER + field, 2, NULL); + } +} + +/***************************************************************** +Returns the offset stored in the given header field. */ +UNIV_INLINE +ulint +page_header_get_offs( +/*=================*/ + /* out: offset from the start of the page, + or 0 */ + const page_t* page, /* in: page */ + ulint field) /* in: PAGE_FREE, ... */ +{ + ulint offs; + + ut_ad(page); + ut_ad((field == PAGE_FREE) + || (field == PAGE_LAST_INSERT) + || (field == PAGE_HEAP_TOP)); + + offs = page_header_get_field(page, field); + + ut_ad((field != PAGE_HEAP_TOP) || offs); + + return(offs); +} + +/***************************************************************** +Sets the pointer stored in the given header field. */ +UNIV_INLINE +void +page_header_set_ptr( +/*================*/ + page_t* page, /* in: page */ + page_zip_des_t* page_zip,/* in/out: compressed page whose + uncompressed part will be updated, or NULL */ + ulint field, /* in: PAGE_FREE, ... */ + const byte* ptr) /* in: pointer or NULL*/ +{ + ulint offs; + + ut_ad(page); + ut_ad((field == PAGE_FREE) + || (field == PAGE_LAST_INSERT) + || (field == PAGE_HEAP_TOP)); + + if (ptr == NULL) { + offs = 0; + } else { + offs = ptr - page; + } + + ut_ad((field != PAGE_HEAP_TOP) || offs); + + page_header_set_field(page, page_zip, field, offs); +} + +/***************************************************************** +Resets the last insert info field in the page header. Writes to mlog +about this operation. */ +UNIV_INLINE +void +page_header_reset_last_insert( +/*==========================*/ + page_t* page, /* in/out: page */ + page_zip_des_t* page_zip,/* in/out: compressed page whose + uncompressed part will be updated, or NULL */ + mtr_t* mtr) /* in: mtr */ +{ + ut_ad(page && mtr); + + if (UNIV_LIKELY_NULL(page_zip)) { + mach_write_to_2(page + (PAGE_HEADER + PAGE_LAST_INSERT), 0); + page_zip_write_header(page_zip, + page + (PAGE_HEADER + PAGE_LAST_INSERT), + 2, mtr); + } else { + mlog_write_ulint(page + (PAGE_HEADER + PAGE_LAST_INSERT), 0, + MLOG_2BYTES, mtr); + } +} + +/**************************************************************** +Determine whether the page is in new-style compact format. */ +UNIV_INLINE +ulint +page_is_comp( +/*=========*/ + /* out: nonzero if the page is in compact + format, zero if it is in old-style format */ + const page_t* page) /* in: index page */ +{ + return(UNIV_EXPECT(page_header_get_field(page, PAGE_N_HEAP) & 0x8000, + 0x8000)); +} + +/**************************************************************** +TRUE if the record is on a page in compact format. */ +UNIV_INLINE +ulint +page_rec_is_comp( +/*=============*/ + /* out: nonzero if in compact format */ + const rec_t* rec) /* in: record */ +{ + return(page_is_comp(page_align(rec))); +} + +/******************************************************************* +Returns the heap number of a record. */ +UNIV_INLINE +ulint +page_rec_get_heap_no( +/*=================*/ + /* out: heap number */ + const rec_t* rec) /* in: the physical record */ +{ + if (page_rec_is_comp(rec)) { + return(rec_get_heap_no_new(rec)); + } else { + return(rec_get_heap_no_old(rec)); + } +} + +/**************************************************************** +Determine whether the page is a B-tree leaf. */ +UNIV_INLINE +ibool +page_is_leaf( +/*=========*/ + /* out: TRUE if the page is a B-tree leaf */ + const page_t* page) /* in: page */ +{ + return(!*(const uint16*) (page + (PAGE_HEADER + PAGE_LEVEL))); +} + +/**************************************************************** +Gets the offset of the first record on the page. */ +UNIV_INLINE +ulint +page_get_infimum_offset( +/*====================*/ + /* out: offset of the first record + in record list, relative from page */ + const page_t* page) /* in: page which must have record(s) */ +{ + ut_ad(page); + ut_ad(!page_offset(page)); + + if (page_is_comp(page)) { + return(PAGE_NEW_INFIMUM); + } else { + return(PAGE_OLD_INFIMUM); + } +} + +/**************************************************************** +Gets the offset of the last record on the page. */ +UNIV_INLINE +ulint +page_get_supremum_offset( +/*=====================*/ + /* out: offset of the last record in + record list, relative from page */ + const page_t* page) /* in: page which must have record(s) */ +{ + ut_ad(page); + ut_ad(!page_offset(page)); + + if (page_is_comp(page)) { + return(PAGE_NEW_SUPREMUM); + } else { + return(PAGE_OLD_SUPREMUM); + } +} + +/**************************************************************** +TRUE if the record is a user record on the page. */ +UNIV_INLINE +ibool +page_rec_is_user_rec_low( +/*=====================*/ + /* out: TRUE if a user record */ + ulint offset) /* in: record offset on page */ +{ + ut_ad(offset >= PAGE_NEW_INFIMUM); +#if PAGE_OLD_INFIMUM < PAGE_NEW_INFIMUM +# error "PAGE_OLD_INFIMUM < PAGE_NEW_INFIMUM" +#endif +#if PAGE_OLD_SUPREMUM < PAGE_NEW_SUPREMUM +# error "PAGE_OLD_SUPREMUM < PAGE_NEW_SUPREMUM" +#endif +#if PAGE_NEW_INFIMUM > PAGE_OLD_SUPREMUM +# error "PAGE_NEW_INFIMUM > PAGE_OLD_SUPREMUM" +#endif +#if PAGE_OLD_INFIMUM > PAGE_NEW_SUPREMUM +# error "PAGE_OLD_INFIMUM > PAGE_NEW_SUPREMUM" +#endif +#if PAGE_NEW_SUPREMUM > PAGE_OLD_SUPREMUM_END +# error "PAGE_NEW_SUPREMUM > PAGE_OLD_SUPREMUM_END" +#endif +#if PAGE_OLD_SUPREMUM > PAGE_NEW_SUPREMUM_END +# error "PAGE_OLD_SUPREMUM > PAGE_NEW_SUPREMUM_END" +#endif + ut_ad(offset <= UNIV_PAGE_SIZE - PAGE_EMPTY_DIR_START); + + return(UNIV_LIKELY(offset != PAGE_NEW_SUPREMUM) + && UNIV_LIKELY(offset != PAGE_NEW_INFIMUM) + && UNIV_LIKELY(offset != PAGE_OLD_INFIMUM) + && UNIV_LIKELY(offset != PAGE_OLD_SUPREMUM)); +} + +/**************************************************************** +TRUE if the record is the supremum record on a page. */ +UNIV_INLINE +ibool +page_rec_is_supremum_low( +/*=====================*/ + /* out: TRUE if the supremum record */ + ulint offset) /* in: record offset on page */ +{ + ut_ad(offset >= PAGE_NEW_INFIMUM); + ut_ad(offset <= UNIV_PAGE_SIZE - PAGE_EMPTY_DIR_START); + + return(UNIV_UNLIKELY(offset == PAGE_NEW_SUPREMUM) + || UNIV_UNLIKELY(offset == PAGE_OLD_SUPREMUM)); +} + +/**************************************************************** +TRUE if the record is the infimum record on a page. */ +UNIV_INLINE +ibool +page_rec_is_infimum_low( +/*====================*/ + /* out: TRUE if the infimum record */ + ulint offset) /* in: record offset on page */ +{ + ut_ad(offset >= PAGE_NEW_INFIMUM); + ut_ad(offset <= UNIV_PAGE_SIZE - PAGE_EMPTY_DIR_START); + + return(UNIV_UNLIKELY(offset == PAGE_NEW_INFIMUM) + || UNIV_UNLIKELY(offset == PAGE_OLD_INFIMUM)); +} + +/**************************************************************** +TRUE if the record is a user record on the page. */ +UNIV_INLINE +ibool +page_rec_is_user_rec( +/*=================*/ + /* out: TRUE if a user record */ + const rec_t* rec) /* in: record */ +{ + return(page_rec_is_user_rec_low(page_offset(rec))); +} + +/**************************************************************** +TRUE if the record is the supremum record on a page. */ +UNIV_INLINE +ibool +page_rec_is_supremum( +/*=================*/ + /* out: TRUE if the supremum record */ + const rec_t* rec) /* in: record */ +{ + return(page_rec_is_supremum_low(page_offset(rec))); +} + +/**************************************************************** +TRUE if the record is the infimum record on a page. */ +UNIV_INLINE +ibool +page_rec_is_infimum( +/*================*/ + /* out: TRUE if the infimum record */ + const rec_t* rec) /* in: record */ +{ + return(page_rec_is_infimum_low(page_offset(rec))); +} + +/***************************************************************** +Compares a data tuple to a physical record. Differs from the function +cmp_dtuple_rec_with_match in the way that the record must reside on an +index page, and also page infimum and supremum records can be given in +the parameter rec. These are considered as the negative infinity and +the positive infinity in the alphabetical order. */ +UNIV_INLINE +int +page_cmp_dtuple_rec_with_match( +/*===========================*/ + /* out: 1, 0, -1, if dtuple is greater, equal, + less than rec, respectively, when only the + common first fields are compared */ + const dtuple_t* dtuple, /* in: data tuple */ + const rec_t* rec, /* in: physical record on a page; may also + be page infimum or supremum, in which case + matched-parameter values below are not + affected */ + const ulint* offsets,/* in: array returned by rec_get_offsets() */ + ulint* matched_fields, /* in/out: number of already completely + matched fields; when function returns + contains the value for current comparison */ + ulint* matched_bytes) /* in/out: number of already matched + bytes within the first field not completely + matched; when function returns contains the + value for current comparison */ +{ + ulint rec_offset; + + ut_ad(dtuple_check_typed(dtuple)); + ut_ad(rec_offs_validate(rec, NULL, offsets)); + ut_ad(!rec_offs_comp(offsets) == !page_rec_is_comp(rec)); + + rec_offset = page_offset(rec); + + if (UNIV_UNLIKELY(rec_offset == PAGE_NEW_INFIMUM) + || UNIV_UNLIKELY(rec_offset == PAGE_OLD_INFIMUM)) { + return(1); + } + if (UNIV_UNLIKELY(rec_offset == PAGE_NEW_SUPREMUM) + || UNIV_UNLIKELY(rec_offset == PAGE_OLD_SUPREMUM)) { + return(-1); + } + + return(cmp_dtuple_rec_with_match(dtuple, rec, offsets, + matched_fields, + matched_bytes)); +} + +/***************************************************************** +Gets the page number. */ +UNIV_INLINE +ulint +page_get_page_no( +/*=============*/ + /* out: page number */ + const page_t* page) /* in: page */ +{ + ut_ad(page == page_align((page_t*) page)); + return(mach_read_from_4(page + FIL_PAGE_OFFSET)); +} + +/***************************************************************** +Gets the tablespace identifier. */ +UNIV_INLINE +ulint +page_get_space_id( +/*==============*/ + /* out: space id */ + const page_t* page) /* in: page */ +{ + ut_ad(page == page_align((page_t*) page)); + return(mach_read_from_4(page + FIL_PAGE_ARCH_LOG_NO_OR_SPACE_ID)); +} + +/***************************************************************** +Gets the number of user records on page (infimum and supremum records +are not user records). */ +UNIV_INLINE +ulint +page_get_n_recs( +/*============*/ + /* out: number of user records */ + const page_t* page) /* in: index page */ +{ + return(page_header_get_field(page, PAGE_N_RECS)); +} + +/***************************************************************** +Gets the number of dir slots in directory. */ +UNIV_INLINE +ulint +page_dir_get_n_slots( +/*=================*/ + /* out: number of slots */ + const page_t* page) /* in: index page */ +{ + return(page_header_get_field(page, PAGE_N_DIR_SLOTS)); +} +/***************************************************************** +Sets the number of dir slots in directory. */ +UNIV_INLINE +void +page_dir_set_n_slots( +/*=================*/ + page_t* page, /* in/out: page */ + page_zip_des_t* page_zip,/* in/out: compressed page whose + uncompressed part will be updated, or NULL */ + ulint n_slots)/* in: number of slots */ +{ + page_header_set_field(page, page_zip, PAGE_N_DIR_SLOTS, n_slots); +} + +/***************************************************************** +Gets the number of records in the heap. */ +UNIV_INLINE +ulint +page_dir_get_n_heap( +/*================*/ + /* out: number of user records */ + const page_t* page) /* in: index page */ +{ + return(page_header_get_field(page, PAGE_N_HEAP) & 0x7fff); +} + +/***************************************************************** +Sets the number of records in the heap. */ +UNIV_INLINE +void +page_dir_set_n_heap( +/*================*/ + page_t* page, /* in/out: index page */ + page_zip_des_t* page_zip,/* in/out: compressed page whose + uncompressed part will be updated, or NULL. + Note that the size of the dense page directory + in the compressed page trailer is + n_heap * PAGE_ZIP_DIR_SLOT_SIZE. */ + ulint n_heap) /* in: number of records */ +{ + ut_ad(n_heap < 0x8000); + ut_ad(!page_zip || n_heap + == (page_header_get_field(page, PAGE_N_HEAP) & 0x7fff) + 1); + + page_header_set_field(page, page_zip, PAGE_N_HEAP, n_heap + | (0x8000 + & page_header_get_field(page, PAGE_N_HEAP))); +} + +#ifdef UNIV_DEBUG +/***************************************************************** +Gets pointer to nth directory slot. */ +UNIV_INLINE +page_dir_slot_t* +page_dir_get_nth_slot( +/*==================*/ + /* out: pointer to dir slot */ + const page_t* page, /* in: index page */ + ulint n) /* in: position */ +{ + ut_ad(page_dir_get_n_slots(page) > n); + + return((page_dir_slot_t*) + page + UNIV_PAGE_SIZE - PAGE_DIR + - (n + 1) * PAGE_DIR_SLOT_SIZE); +} +#endif /* UNIV_DEBUG */ + +/****************************************************************** +Used to check the consistency of a record on a page. */ +UNIV_INLINE +ibool +page_rec_check( +/*===========*/ + /* out: TRUE if succeed */ + const rec_t* rec) /* in: record */ +{ + const page_t* page = page_align(rec); + + ut_a(rec); + + ut_a(page_offset(rec) <= page_header_get_field(page, PAGE_HEAP_TOP)); + ut_a(page_offset(rec) >= PAGE_DATA); + + return(TRUE); +} + +/******************************************************************* +Gets the record pointed to by a directory slot. */ +UNIV_INLINE +const rec_t* +page_dir_slot_get_rec( +/*==================*/ + /* out: pointer to record */ + const page_dir_slot_t* slot) /* in: directory slot */ +{ + return(page_align(slot) + mach_read_from_2(slot)); +} + +/******************************************************************* +This is used to set the record offset in a directory slot. */ +UNIV_INLINE +void +page_dir_slot_set_rec( +/*==================*/ + page_dir_slot_t* slot, /* in: directory slot */ + rec_t* rec) /* in: record on the page */ +{ + ut_ad(page_rec_check(rec)); + + mach_write_to_2(slot, page_offset(rec)); +} + +/******************************************************************* +Gets the number of records owned by a directory slot. */ +UNIV_INLINE +ulint +page_dir_slot_get_n_owned( +/*======================*/ + /* out: number of records */ + const page_dir_slot_t* slot) /* in: page directory slot */ +{ + const rec_t* rec = page_dir_slot_get_rec(slot); + if (page_rec_is_comp(slot)) { + return(rec_get_n_owned_new(rec)); + } else { + return(rec_get_n_owned_old(rec)); + } +} + +/******************************************************************* +This is used to set the owned records field of a directory slot. */ +UNIV_INLINE +void +page_dir_slot_set_n_owned( +/*======================*/ + page_dir_slot_t*slot, /* in/out: directory slot */ + page_zip_des_t* page_zip,/* in/out: compressed page, or NULL */ + ulint n) /* in: number of records owned by the slot */ +{ + rec_t* rec = (rec_t*) page_dir_slot_get_rec(slot); + if (page_rec_is_comp(slot)) { + rec_set_n_owned_new(rec, page_zip, n); + } else { + ut_ad(!page_zip); + rec_set_n_owned_old(rec, n); + } +} + +/**************************************************************** +Calculates the space reserved for directory slots of a given number of +records. The exact value is a fraction number n * PAGE_DIR_SLOT_SIZE / +PAGE_DIR_SLOT_MIN_N_OWNED, and it is rounded upwards to an integer. */ +UNIV_INLINE +ulint +page_dir_calc_reserved_space( +/*=========================*/ + ulint n_recs) /* in: number of records */ +{ + return((PAGE_DIR_SLOT_SIZE * n_recs + PAGE_DIR_SLOT_MIN_N_OWNED - 1) + / PAGE_DIR_SLOT_MIN_N_OWNED); +} + +/**************************************************************** +Gets the pointer to the next record on the page. */ +UNIV_INLINE +const rec_t* +page_rec_get_next_low( +/*==================*/ + /* out: pointer to next record */ + const rec_t* rec, /* in: pointer to record */ + ulint comp) /* in: nonzero=compact page layout */ +{ + ulint offs; + const page_t* page; + + ut_ad(page_rec_check(rec)); + + page = page_align(rec); + + offs = rec_get_next_offs(rec, comp); + + if (UNIV_UNLIKELY(offs >= UNIV_PAGE_SIZE)) { + fprintf(stderr, + "InnoDB: Next record offset is nonsensical %lu" + " in record at offset %lu\n" + "InnoDB: rec address %p, space id %lu, page %lu\n", + (ulong)offs, (ulong) page_offset(rec), + (void*) rec, + (ulong) page_get_space_id(page), + (ulong) page_get_page_no(page)); + buf_page_print(page, 0); + + ut_error; + } + + if (UNIV_UNLIKELY(offs == 0)) { + + return(NULL); + } + + return(page + offs); +} + +/**************************************************************** +Gets the pointer to the next record on the page. */ +UNIV_INLINE +rec_t* +page_rec_get_next( +/*==============*/ + /* out: pointer to next record */ + rec_t* rec) /* in: pointer to record */ +{ + return((rec_t*) page_rec_get_next_low(rec, page_rec_is_comp(rec))); +} + +/**************************************************************** +Gets the pointer to the next record on the page. */ +UNIV_INLINE +const rec_t* +page_rec_get_next_const( +/*====================*/ + /* out: pointer to next record */ + const rec_t* rec) /* in: pointer to record */ +{ + return(page_rec_get_next_low(rec, page_rec_is_comp(rec))); +} + +/**************************************************************** +Sets the pointer to the next record on the page. */ +UNIV_INLINE +void +page_rec_set_next( +/*==============*/ + rec_t* rec, /* in: pointer to record, + must not be page supremum */ + rec_t* next) /* in: pointer to next record, + must not be page infimum */ +{ + ulint offs; + + ut_ad(page_rec_check(rec)); + ut_ad(!page_rec_is_supremum(rec)); + ut_ad(rec != next); + + ut_ad(!next || !page_rec_is_infimum(next)); + ut_ad(!next || page_align(rec) == page_align(next)); + + if (UNIV_LIKELY(next != NULL)) { + offs = page_offset(next); + } else { + offs = 0; + } + + if (page_rec_is_comp(rec)) { + rec_set_next_offs_new(rec, offs); + } else { + rec_set_next_offs_old(rec, offs); + } +} + +/**************************************************************** +Gets the pointer to the previous record. */ +UNIV_INLINE +const rec_t* +page_rec_get_prev_const( +/*====================*/ + /* out: pointer to previous record */ + const rec_t* rec) /* in: pointer to record, must not be page + infimum */ +{ + const page_dir_slot_t* slot; + ulint slot_no; + const rec_t* rec2; + const rec_t* prev_rec = NULL; + const page_t* page; + + ut_ad(page_rec_check(rec)); + + page = page_align(rec); + + ut_ad(!page_rec_is_infimum(rec)); + + slot_no = page_dir_find_owner_slot(rec); + + ut_a(slot_no != 0); + + slot = page_dir_get_nth_slot(page, slot_no - 1); + + rec2 = page_dir_slot_get_rec(slot); + + if (page_is_comp(page)) { + while (rec != rec2) { + prev_rec = rec2; + rec2 = page_rec_get_next_low(rec2, TRUE); + } + } else { + while (rec != rec2) { + prev_rec = rec2; + rec2 = page_rec_get_next_low(rec2, FALSE); + } + } + + ut_a(prev_rec); + + return(prev_rec); +} + +/**************************************************************** +Gets the pointer to the previous record. */ +UNIV_INLINE +rec_t* +page_rec_get_prev( +/*==============*/ + /* out: pointer to previous record */ + rec_t* rec) /* in: pointer to record, must not be page + infimum */ +{ + return((rec_t*) page_rec_get_prev_const(rec)); +} + +/******************************************************************* +Looks for the record which owns the given record. */ +UNIV_INLINE +rec_t* +page_rec_find_owner_rec( +/*====================*/ + /* out: the owner record */ + rec_t* rec) /* in: the physical record */ +{ + ut_ad(page_rec_check(rec)); + + if (page_rec_is_comp(rec)) { + while (rec_get_n_owned_new(rec) == 0) { + rec = page_rec_get_next(rec); + } + } else { + while (rec_get_n_owned_old(rec) == 0) { + rec = page_rec_get_next(rec); + } + } + + return(rec); +} + +/************************************************************** +Returns the base extra size of a physical record. This is the +size of the fixed header, independent of the record size. */ +UNIV_INLINE +ulint +page_rec_get_base_extra_size( +/*=========================*/ + /* out: REC_N_NEW_EXTRA_BYTES + or REC_N_OLD_EXTRA_BYTES */ + const rec_t* rec) /* in: physical record */ +{ +#if REC_N_NEW_EXTRA_BYTES + 1 != REC_N_OLD_EXTRA_BYTES +# error "REC_N_NEW_EXTRA_BYTES + 1 != REC_N_OLD_EXTRA_BYTES" +#endif + return(REC_N_NEW_EXTRA_BYTES + (ulint) !page_rec_is_comp(rec)); +} + +/**************************************************************** +Returns the sum of the sizes of the records in the record list, excluding +the infimum and supremum records. */ +UNIV_INLINE +ulint +page_get_data_size( +/*===============*/ + /* out: data in bytes */ + const page_t* page) /* in: index page */ +{ + ulint ret; + + ret = (ulint)(page_header_get_field(page, PAGE_HEAP_TOP) + - (page_is_comp(page) + ? PAGE_NEW_SUPREMUM_END + : PAGE_OLD_SUPREMUM_END) + - page_header_get_field(page, PAGE_GARBAGE)); + + ut_ad(ret < UNIV_PAGE_SIZE); + + return(ret); +} + + +/**************************************************************** +Allocates a block of memory from the free list of an index page. */ +UNIV_INTERN +void +page_mem_alloc_free( +/*================*/ + page_t* page, /* in/out: index page */ + page_zip_des_t* page_zip,/* in/out: compressed page with enough + space available for inserting the record, + or NULL */ + rec_t* next_rec,/* in: pointer to the new head of the + free record list */ + ulint need) /* in: number of bytes allocated */ +{ + ulint garbage; + +#ifdef UNIV_DEBUG + const rec_t* old_rec = page_header_get_ptr(page, PAGE_FREE); + ulint next_offs; + + ut_ad(old_rec); + next_offs = rec_get_next_offs(old_rec, page_is_comp(page)); + ut_ad(next_rec == (next_offs ? page + next_offs : NULL)); +#endif + + page_header_set_ptr(page, page_zip, PAGE_FREE, next_rec); + + garbage = page_header_get_field(page, PAGE_GARBAGE); + ut_ad(garbage >= need); + + page_header_set_field(page, page_zip, PAGE_GARBAGE, garbage - need); +} + +/***************************************************************** +Calculates free space if a page is emptied. */ +UNIV_INLINE +ulint +page_get_free_space_of_empty( +/*=========================*/ + /* out: free space */ + ulint comp) /* in: nonzero=compact page layout */ +{ + if (UNIV_LIKELY(comp)) { + return((ulint)(UNIV_PAGE_SIZE + - PAGE_NEW_SUPREMUM_END + - PAGE_DIR + - 2 * PAGE_DIR_SLOT_SIZE)); + } + + return((ulint)(UNIV_PAGE_SIZE + - PAGE_OLD_SUPREMUM_END + - PAGE_DIR + - 2 * PAGE_DIR_SLOT_SIZE)); +} + +/**************************************************************** +Each user record on a page, and also the deleted user records in the heap +takes its size plus the fraction of the dir cell size / +PAGE_DIR_SLOT_MIN_N_OWNED bytes for it. If the sum of these exceeds the +value of page_get_free_space_of_empty, the insert is impossible, otherwise +it is allowed. This function returns the maximum combined size of records +which can be inserted on top of the record heap. */ +UNIV_INLINE +ulint +page_get_max_insert_size( +/*=====================*/ + /* out: maximum combined size for + inserted records */ + const page_t* page, /* in: index page */ + ulint n_recs) /* in: number of records */ +{ + ulint occupied; + ulint free_space; + + if (page_is_comp(page)) { + occupied = page_header_get_field(page, PAGE_HEAP_TOP) + - PAGE_NEW_SUPREMUM_END + + page_dir_calc_reserved_space( + n_recs + page_dir_get_n_heap(page) - 2); + + free_space = page_get_free_space_of_empty(TRUE); + } else { + occupied = page_header_get_field(page, PAGE_HEAP_TOP) + - PAGE_OLD_SUPREMUM_END + + page_dir_calc_reserved_space( + n_recs + page_dir_get_n_heap(page) - 2); + + free_space = page_get_free_space_of_empty(FALSE); + } + + /* Above the 'n_recs +' part reserves directory space for the new + inserted records; the '- 2' excludes page infimum and supremum + records */ + + if (occupied > free_space) { + + return(0); + } + + return(free_space - occupied); +} + +/**************************************************************** +Returns the maximum combined size of records which can be inserted on top +of the record heap if a page is first reorganized. */ +UNIV_INLINE +ulint +page_get_max_insert_size_after_reorganize( +/*======================================*/ + /* out: maximum combined size for + inserted records */ + const page_t* page, /* in: index page */ + ulint n_recs) /* in: number of records */ +{ + ulint occupied; + ulint free_space; + + occupied = page_get_data_size(page) + + page_dir_calc_reserved_space(n_recs + page_get_n_recs(page)); + + free_space = page_get_free_space_of_empty(page_is_comp(page)); + + if (occupied > free_space) { + + return(0); + } + + return(free_space - occupied); +} + +/**************************************************************** +Puts a record to free list. */ +UNIV_INLINE +void +page_mem_free( +/*==========*/ + page_t* page, /* in/out: index page */ + page_zip_des_t* page_zip,/* in/out: compressed page, or NULL */ + rec_t* rec, /* in: pointer to the (origin of) record */ + dict_index_t* index, /* in: index of rec */ + const ulint* offsets)/* in: array returned by rec_get_offsets() */ +{ + rec_t* free; + ulint garbage; + + ut_ad(rec_offs_validate(rec, index, offsets)); + free = page_header_get_ptr(page, PAGE_FREE); + + page_rec_set_next(rec, free); + page_header_set_ptr(page, page_zip, PAGE_FREE, rec); + + garbage = page_header_get_field(page, PAGE_GARBAGE); + + page_header_set_field(page, page_zip, PAGE_GARBAGE, + garbage + rec_offs_size(offsets)); + + if (UNIV_LIKELY_NULL(page_zip)) { + page_zip_dir_delete(page_zip, rec, index, offsets, free); + } else { + page_header_set_field(page, page_zip, PAGE_N_RECS, + page_get_n_recs(page) - 1); + } +} + +#ifdef UNIV_MATERIALIZE +#undef UNIV_INLINE +#define UNIV_INLINE UNIV_INLINE_ORIGINAL +#endif === added file 'storage/xtradb/include/page0types.h' --- a/storage/xtradb/include/page0types.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/page0types.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,142 @@ +/***************************************************************************** + +Copyright (c) 1994, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Index page routines + +Created 2/2/1994 Heikki Tuuri +*******************************************************/ + +#ifndef page0types_h +#define page0types_h + +#include "univ.i" +#include "dict0types.h" +#include "mtr0types.h" + +/* Type of the index page */ +/* The following define eliminates a name collision on HP-UX */ +#define page_t ib_page_t +typedef byte page_t; +typedef struct page_search_struct page_search_t; +typedef struct page_cur_struct page_cur_t; + +typedef byte page_zip_t; +typedef struct page_zip_des_struct page_zip_des_t; + +/* The following definitions would better belong to page0zip.h, +but we cannot include page0zip.h from rem0rec.ic, because +page0*.h includes rem0rec.h and may include rem0rec.ic. */ + +#define PAGE_ZIP_SSIZE_BITS 3 + +#define PAGE_ZIP_MIN_SIZE_SHIFT 10 /* log2 of smallest compressed size */ +#define PAGE_ZIP_MIN_SIZE (1 << PAGE_ZIP_MIN_SIZE_SHIFT) + +#define PAGE_ZIP_NUM_SSIZE (UNIV_PAGE_SIZE_SHIFT - PAGE_ZIP_MIN_SIZE_SHIFT + 2) +#if PAGE_ZIP_NUM_SSIZE > (1 << PAGE_ZIP_SSIZE_BITS) +# error "PAGE_ZIP_NUM_SSIZE > (1 << PAGE_ZIP_SSIZE_BITS)" +#endif + +/* Compressed page descriptor */ +struct page_zip_des_struct +{ + page_zip_t* data; /* compressed page data */ + +#ifdef UNIV_DEBUG + unsigned m_start:16; /* start offset of modification log */ +#endif /* UNIV_DEBUG */ + unsigned m_end:16; /* end offset of modification log */ + unsigned m_nonempty:1; /* TRUE if the modification log + is not empty */ + unsigned n_blobs:12; /* number of externally stored + columns on the page; the maximum + is 744 on a 16 KiB page */ + unsigned ssize:PAGE_ZIP_SSIZE_BITS; + /* 0 or compressed page size; + the size in bytes is + PAGE_ZIP_MIN_SIZE << (ssize - 1). */ +}; + +/** Compression statistics for a given page size */ +struct page_zip_stat_struct { + /** Number of page compressions */ + ulint compressed; + /** Number of successful page compressions */ + ulint compressed_ok; + /** Number of page decompressions */ + ulint decompressed; + /** Duration of page compressions in microseconds */ + ib_uint64_t compressed_usec; + /** Duration of page decompressions in microseconds */ + ib_uint64_t decompressed_usec; +}; + +typedef struct page_zip_stat_struct page_zip_stat_t; + +/** Statistics on compression, indexed by page_zip_des_t::ssize - 1 */ +extern page_zip_stat_t page_zip_stat[PAGE_ZIP_NUM_SSIZE - 1]; + +/************************************************************************** +Write the "deleted" flag of a record on a compressed page. The flag must +already have been written on the uncompressed page. */ +UNIV_INTERN +void +page_zip_rec_set_deleted( +/*=====================*/ + page_zip_des_t* page_zip,/* in/out: compressed page */ + const byte* rec, /* in: record on the uncompressed page */ + ulint flag) /* in: the deleted flag (nonzero=TRUE) */ + __attribute__((nonnull)); + +/************************************************************************** +Write the "owned" flag of a record on a compressed page. The n_owned field +must already have been written on the uncompressed page. */ +UNIV_INTERN +void +page_zip_rec_set_owned( +/*===================*/ + page_zip_des_t* page_zip,/* in/out: compressed page */ + const byte* rec, /* in: record on the uncompressed page */ + ulint flag) /* in: the owned flag (nonzero=TRUE) */ + __attribute__((nonnull)); + +/************************************************************************** +Shift the dense page directory when a record is deleted. */ +UNIV_INTERN +void +page_zip_dir_delete( +/*================*/ + page_zip_des_t* page_zip,/* in/out: compressed page */ + byte* rec, /* in: deleted record */ + dict_index_t* index, /* in: index of rec */ + const ulint* offsets,/* in: rec_get_offsets(rec) */ + const byte* free) /* in: previous start of the free list */ + __attribute__((nonnull(1,2,3,4))); + +/************************************************************************** +Add a slot to the dense page directory. */ +UNIV_INTERN +void +page_zip_dir_add_slot( +/*==================*/ + page_zip_des_t* page_zip, /* in/out: compressed page */ + ulint is_clustered) /* in: nonzero for clustered index, + zero for others */ + __attribute__((nonnull)); +#endif === added file 'storage/xtradb/include/page0zip.h' --- a/storage/xtradb/include/page0zip.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/page0zip.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,455 @@ +/***************************************************************************** + +Copyright (c) 2005, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Compressed page interface + +Created June 2005 by Marko Makela +*******************************************************/ + +#ifndef page0zip_h +#define page0zip_h + +#ifdef UNIV_MATERIALIZE +# undef UNIV_INLINE +# define UNIV_INLINE +#endif + +#include "mtr0types.h" +#include "page0types.h" +#include "buf0types.h" +#include "dict0types.h" +#include "mem0mem.h" + +/************************************************************************** +Determine the size of a compressed page in bytes. */ +UNIV_INLINE +ulint +page_zip_get_size( +/*==============*/ + /* out: size in bytes */ + const page_zip_des_t* page_zip) /* in: compressed page */ + __attribute__((nonnull, pure)); +/************************************************************************** +Set the size of a compressed page in bytes. */ +UNIV_INLINE +void +page_zip_set_size( +/*==============*/ + page_zip_des_t* page_zip, /* in/out: compressed page */ + ulint size); /* in: size in bytes */ + +/************************************************************************** +Determine if a record is so big that it needs to be stored externally. */ +UNIV_INLINE +ibool +page_zip_rec_needs_ext( +/*===================*/ + /* out: FALSE if the entire record + can be stored locally on the page */ + ulint rec_size, /* in: length of the record in bytes */ + ulint comp, /* in: nonzero=compact format */ + ulint n_fields, /* in: number of fields in the record; + ignored if zip_size == 0 */ + ulint zip_size) /* in: compressed page size in bytes, or 0 */ + __attribute__((const)); + +/************************************************************************** +Determine the guaranteed free space on an empty page. */ +UNIV_INTERN +ulint +page_zip_empty_size( +/*================*/ + /* out: minimum payload size on the page */ + ulint n_fields, /* in: number of columns in the index */ + ulint zip_size) /* in: compressed page size in bytes */ + __attribute__((const)); + +/************************************************************************** +Initialize a compressed page descriptor. */ +UNIV_INLINE +void +page_zip_des_init( +/*==============*/ + page_zip_des_t* page_zip); /* in/out: compressed page + descriptor */ + +/************************************************************************** +Configure the zlib allocator to use the given memory heap. */ +UNIV_INTERN +void +page_zip_set_alloc( +/*===============*/ + void* stream, /* in/out: zlib stream */ + mem_heap_t* heap); /* in: memory heap to use */ + +/************************************************************************** +Compress a page. */ +UNIV_INTERN +ibool +page_zip_compress( +/*==============*/ + /* out: TRUE on success, FALSE on failure; + page_zip will be left intact on failure. */ + page_zip_des_t* page_zip,/* in: size; out: data, n_blobs, + m_start, m_end, m_nonempty */ + const page_t* page, /* in: uncompressed page */ + dict_index_t* index, /* in: index of the B-tree node */ + mtr_t* mtr) /* in: mini-transaction, or NULL */ + __attribute__((nonnull(1,2,3))); + +/************************************************************************** +Decompress a page. This function should tolerate errors on the compressed +page. Instead of letting assertions fail, it will return FALSE if an +inconsistency is detected. */ +UNIV_INTERN +ibool +page_zip_decompress( +/*================*/ + /* out: TRUE on success, FALSE on failure */ + page_zip_des_t* page_zip,/* in: data, ssize; + out: m_start, m_end, m_nonempty, n_blobs */ + page_t* page) /* out: uncompressed page, may be trashed */ + __attribute__((nonnull)); + +#ifdef UNIV_DEBUG +/************************************************************************** +Validate a compressed page descriptor. */ +UNIV_INLINE +ibool +page_zip_simple_validate( +/*=====================*/ + /* out: TRUE if ok */ + const page_zip_des_t* page_zip); /* in: compressed page + descriptor */ +#endif /* UNIV_DEBUG */ + +#ifdef UNIV_ZIP_DEBUG +/************************************************************************** +Check that the compressed and decompressed pages match. */ +UNIV_INTERN +ibool +page_zip_validate_low( +/*==================*/ + /* out: TRUE if valid, FALSE if not */ + const page_zip_des_t* page_zip,/* in: compressed page */ + const page_t* page, /* in: uncompressed page */ + ibool sloppy) /* in: FALSE=strict, + TRUE=ignore the MIN_REC_FLAG */ + __attribute__((nonnull)); +/************************************************************************** +Check that the compressed and decompressed pages match. */ +UNIV_INTERN +ibool +page_zip_validate( +/*==============*/ + const page_zip_des_t* page_zip,/* in: compressed page */ + const page_t* page) /* in: uncompressed page */ + __attribute__((nonnull)); +#endif /* UNIV_ZIP_DEBUG */ + +/************************************************************************** +Determine how big record can be inserted without recompressing the page. */ +UNIV_INLINE +lint +page_zip_max_ins_size( +/*==================*/ + /* out: a positive number + indicating the maximum size of + a record whose insertion is + guaranteed to succeed, or + zero or negative */ + const page_zip_des_t* page_zip,/* in: compressed page */ + ibool is_clust)/* in: TRUE if clustered index */ + __attribute__((nonnull, pure)); + +/************************************************************************** +Determine if enough space is available in the modification log. */ +UNIV_INLINE +ibool +page_zip_available( +/*===============*/ + /* out: TRUE if page_zip_write_rec() + will succeed */ + const page_zip_des_t* page_zip,/* in: compressed page */ + ibool is_clust,/* in: TRUE if clustered index */ + ulint length, /* in: combined size of the record */ + ulint create) /* in: nonzero=add the record to + the heap */ + __attribute__((nonnull, pure)); + +/************************************************************************** +Write data to the uncompressed header portion of a page. The data must +already have been written to the uncompressed page. */ +UNIV_INLINE +void +page_zip_write_header( +/*==================*/ + page_zip_des_t* page_zip,/* in/out: compressed page */ + const byte* str, /* in: address on the uncompressed page */ + ulint length, /* in: length of the data */ + mtr_t* mtr) /* in: mini-transaction, or NULL */ + __attribute__((nonnull(1,2))); + +/************************************************************************** +Write an entire record on the compressed page. The data must already +have been written to the uncompressed page. */ +UNIV_INTERN +void +page_zip_write_rec( +/*===============*/ + page_zip_des_t* page_zip,/* in/out: compressed page */ + const byte* rec, /* in: record being written */ + dict_index_t* index, /* in: the index the record belongs to */ + const ulint* offsets,/* in: rec_get_offsets(rec, index) */ + ulint create) /* in: nonzero=insert, zero=update */ + __attribute__((nonnull)); + +/*************************************************************** +Parses a log record of writing a BLOB pointer of a record. */ +UNIV_INTERN +byte* +page_zip_parse_write_blob_ptr( +/*==========================*/ + /* out: end of log record or NULL */ + byte* ptr, /* in: redo log buffer */ + byte* end_ptr,/* in: redo log buffer end */ + page_t* page, /* in/out: uncompressed page */ + page_zip_des_t* page_zip);/* in/out: compressed page */ + +/************************************************************************** +Write a BLOB pointer of a record on the leaf page of a clustered index. +The information must already have been updated on the uncompressed page. */ +UNIV_INTERN +void +page_zip_write_blob_ptr( +/*====================*/ + page_zip_des_t* page_zip,/* in/out: compressed page */ + const byte* rec, /* in/out: record whose data is being + written */ + dict_index_t* index, /* in: index of the page */ + const ulint* offsets,/* in: rec_get_offsets(rec, index) */ + ulint n, /* in: column index */ + mtr_t* mtr) /* in: mini-transaction handle, + or NULL if no logging is needed */ + __attribute__((nonnull(1,2,3,4))); + +/*************************************************************** +Parses a log record of writing the node pointer of a record. */ +UNIV_INTERN +byte* +page_zip_parse_write_node_ptr( +/*==========================*/ + /* out: end of log record or NULL */ + byte* ptr, /* in: redo log buffer */ + byte* end_ptr,/* in: redo log buffer end */ + page_t* page, /* in/out: uncompressed page */ + page_zip_des_t* page_zip);/* in/out: compressed page */ + +/************************************************************************** +Write the node pointer of a record on a non-leaf compressed page. */ +UNIV_INTERN +void +page_zip_write_node_ptr( +/*====================*/ + page_zip_des_t* page_zip,/* in/out: compressed page */ + byte* rec, /* in/out: record */ + ulint size, /* in: data size of rec */ + ulint ptr, /* in: node pointer */ + mtr_t* mtr) /* in: mini-transaction, or NULL */ + __attribute__((nonnull(1,2))); + +/************************************************************************** +Write the trx_id and roll_ptr of a record on a B-tree leaf node page. */ +UNIV_INTERN +void +page_zip_write_trx_id_and_roll_ptr( +/*===============================*/ + page_zip_des_t* page_zip,/* in/out: compressed page */ + byte* rec, /* in/out: record */ + const ulint* offsets,/* in: rec_get_offsets(rec, index) */ + ulint trx_id_col,/* in: column number of TRX_ID in rec */ + dulint trx_id, /* in: transaction identifier */ + dulint roll_ptr)/* in: roll_ptr */ + __attribute__((nonnull)); + +/************************************************************************** +Write the "deleted" flag of a record on a compressed page. The flag must +already have been written on the uncompressed page. */ +UNIV_INTERN +void +page_zip_rec_set_deleted( +/*=====================*/ + page_zip_des_t* page_zip,/* in/out: compressed page */ + const byte* rec, /* in: record on the uncompressed page */ + ulint flag) /* in: the deleted flag (nonzero=TRUE) */ + __attribute__((nonnull)); + +/************************************************************************** +Write the "owned" flag of a record on a compressed page. The n_owned field +must already have been written on the uncompressed page. */ +UNIV_INTERN +void +page_zip_rec_set_owned( +/*===================*/ + page_zip_des_t* page_zip,/* in/out: compressed page */ + const byte* rec, /* in: record on the uncompressed page */ + ulint flag) /* in: the owned flag (nonzero=TRUE) */ + __attribute__((nonnull)); + +/************************************************************************** +Insert a record to the dense page directory. */ +UNIV_INTERN +void +page_zip_dir_insert( +/*================*/ + page_zip_des_t* page_zip,/* in/out: compressed page */ + const byte* prev_rec,/* in: record after which to insert */ + const byte* free_rec,/* in: record from which rec was + allocated, or NULL */ + byte* rec); /* in: record to insert */ + +/************************************************************************** +Shift the dense page directory and the array of BLOB pointers +when a record is deleted. */ +UNIV_INTERN +void +page_zip_dir_delete( +/*================*/ + page_zip_des_t* page_zip,/* in/out: compressed page */ + byte* rec, /* in: deleted record */ + dict_index_t* index, /* in: index of rec */ + const ulint* offsets,/* in: rec_get_offsets(rec) */ + const byte* free) /* in: previous start of the free list */ + __attribute__((nonnull(1,2,3,4))); + +/************************************************************************** +Add a slot to the dense page directory. */ +UNIV_INTERN +void +page_zip_dir_add_slot( +/*==================*/ + page_zip_des_t* page_zip, /* in/out: compressed page */ + ulint is_clustered) /* in: nonzero for clustered index, + zero for others */ + __attribute__((nonnull)); + +/*************************************************************** +Parses a log record of writing to the header of a page. */ +UNIV_INTERN +byte* +page_zip_parse_write_header( +/*========================*/ + /* out: end of log record or NULL */ + byte* ptr, /* in: redo log buffer */ + byte* end_ptr,/* in: redo log buffer end */ + page_t* page, /* in/out: uncompressed page */ + page_zip_des_t* page_zip);/* in/out: compressed page */ + +/************************************************************************** +Write data to the uncompressed header portion of a page. The data must +already have been written to the uncompressed page. +However, the data portion of the uncompressed page may differ from +the compressed page when a record is being inserted in +page_cur_insert_rec_low(). */ +UNIV_INLINE +void +page_zip_write_header( +/*==================*/ + page_zip_des_t* page_zip,/* in/out: compressed page */ + const byte* str, /* in: address on the uncompressed page */ + ulint length, /* in: length of the data */ + mtr_t* mtr) /* in: mini-transaction, or NULL */ + __attribute__((nonnull(1,2))); + +/************************************************************************** +Reorganize and compress a page. This is a low-level operation for +compressed pages, to be used when page_zip_compress() fails. +On success, a redo log entry MLOG_ZIP_PAGE_COMPRESS will be written. +The function btr_page_reorganize() should be preferred whenever possible. +IMPORTANT: if page_zip_reorganize() is invoked on a leaf page of a +non-clustered index, the caller must update the insert buffer free +bits in the same mini-transaction in such a way that the modification +will be redo-logged. */ +UNIV_INTERN +ibool +page_zip_reorganize( +/*================*/ + /* out: TRUE on success, FALSE on failure; + page and page_zip will be left intact + on failure. */ + buf_block_t* block, /* in/out: page with compressed page; + on the compressed page, in: size; + out: data, n_blobs, + m_start, m_end, m_nonempty */ + dict_index_t* index, /* in: index of the B-tree node */ + mtr_t* mtr) /* in: mini-transaction */ + __attribute__((nonnull)); +/************************************************************************** +Copy the records of a page byte for byte. Do not copy the page header +or trailer, except those B-tree header fields that are directly +related to the storage of records. Also copy PAGE_MAX_TRX_ID. +NOTE: The caller must update the lock table and the adaptive hash index. */ +UNIV_INTERN +void +page_zip_copy_recs( +/*===============*/ + page_zip_des_t* page_zip, /* out: copy of src_zip + (n_blobs, m_start, m_end, + m_nonempty, data[0..size-1]) */ + page_t* page, /* out: copy of src */ + const page_zip_des_t* src_zip, /* in: compressed page */ + const page_t* src, /* in: page */ + dict_index_t* index, /* in: index of the B-tree */ + mtr_t* mtr) /* in: mini-transaction */ + __attribute__((nonnull(1,2,3,4))); + +/************************************************************************** +Parses a log record of compressing an index page. */ +UNIV_INTERN +byte* +page_zip_parse_compress( +/*====================*/ + /* out: end of log record or NULL */ + byte* ptr, /* in: buffer */ + byte* end_ptr,/* in: buffer end */ + page_t* page, /* out: uncompressed page */ + page_zip_des_t* page_zip)/* out: compressed page */ + __attribute__((nonnull(1,2))); + +/************************************************************************** +Calculate the compressed page checksum. */ +UNIV_INTERN +ulint +page_zip_calc_checksum( +/*===================*/ + /* out: page checksum */ + const void* data, /* in: compressed page */ + ulint size) /* in: size of compressed page */ + __attribute__((nonnull)); + +#ifdef UNIV_MATERIALIZE +# undef UNIV_INLINE +# define UNIV_INLINE UNIV_INLINE_ORIGINAL +#endif + +#ifndef UNIV_NONINL +# include "page0zip.ic" +#endif + +#endif /* page0zip_h */ === added file 'storage/xtradb/include/page0zip.ic' --- a/storage/xtradb/include/page0zip.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/page0zip.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,398 @@ +/***************************************************************************** + +Copyright (c) 2005, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Compressed page interface + +Created June 2005 by Marko Makela +*******************************************************/ + +#ifdef UNIV_MATERIALIZE +# undef UNIV_INLINE +# define UNIV_INLINE +#endif + +#include "page0zip.h" +#include "page0page.h" + +/* The format of compressed pages is as follows. + +The header and trailer of the uncompressed pages, excluding the page +directory in the trailer, are copied as is to the header and trailer +of the compressed page. + +At the end of the compressed page, there is a dense page directory +pointing to every user record contained on the page, including deleted +records on the free list. The dense directory is indexed in the +collation order, i.e., in the order in which the record list is +linked on the uncompressed page. The infimum and supremum records are +excluded. The two most significant bits of the entries are allocated +for the delete-mark and an n_owned flag indicating the last record in +a chain of records pointed to from the sparse page directory on the +uncompressed page. + +The data between PAGE_ZIP_START and the last page directory entry will +be written in compressed format, starting at offset PAGE_DATA. +Infimum and supremum records are not stored. We exclude the +REC_N_NEW_EXTRA_BYTES in every record header. These can be recovered +from the dense page directory stored at the end of the compressed +page. + +The fields node_ptr (in non-leaf B-tree nodes; level>0), trx_id and +roll_ptr (in leaf B-tree nodes; level=0), and BLOB pointers of +externally stored columns are stored separately, in ascending order of +heap_no and column index, starting backwards from the dense page +directory. + +The compressed data stream may be followed by a modification log +covering the compressed portion of the page, as follows. + +MODIFICATION LOG ENTRY FORMAT +- write record: + - (heap_no - 1) << 1 (1..2 bytes) + - extra bytes backwards + - data bytes +- clear record: + - (heap_no - 1) << 1 | 1 (1..2 bytes) + +The integer values are stored in a variable-length format: +- 0xxxxxxx: 0..127 +- 1xxxxxxx xxxxxxxx: 0..32767 + +The end of the modification log is marked by a 0 byte. + +In summary, the compressed page looks like this: + +(1) Uncompressed page header (PAGE_DATA bytes) +(2) Compressed index information +(3) Compressed page data +(4) Page modification log (page_zip->m_start..page_zip->m_end) +(5) Empty zero-filled space +(6) BLOB pointers (on leaf pages) + - BTR_EXTERN_FIELD_REF_SIZE for each externally stored column + - in descending collation order +(7) Uncompressed columns of user records, n_dense * uncompressed_size bytes, + - indexed by heap_no + - DATA_TRX_ID_LEN + DATA_ROLL_PTR_LEN for leaf pages of clustered indexes + - REC_NODE_PTR_SIZE for non-leaf pages + - 0 otherwise +(8) dense page directory, stored backwards + - n_dense = n_heap - 2 + - existing records in ascending collation order + - deleted records (free list) in link order +*/ + +/* Start offset of the area that will be compressed */ +#define PAGE_ZIP_START PAGE_NEW_SUPREMUM_END +/* Size of an compressed page directory entry */ +#define PAGE_ZIP_DIR_SLOT_SIZE 2 +/* Mask of record offsets */ +#define PAGE_ZIP_DIR_SLOT_MASK 0x3fff +/* 'owned' flag */ +#define PAGE_ZIP_DIR_SLOT_OWNED 0x4000 +/* 'deleted' flag */ +#define PAGE_ZIP_DIR_SLOT_DEL 0x8000 + +/************************************************************************** +Determine the size of a compressed page in bytes. */ +UNIV_INLINE +ulint +page_zip_get_size( +/*==============*/ + /* out: size in bytes */ + const page_zip_des_t* page_zip) /* in: compressed page */ +{ + ulint size; + + if (UNIV_UNLIKELY(!page_zip->ssize)) { + return(0); + } + + size = (PAGE_ZIP_MIN_SIZE >> 1) << page_zip->ssize; + + ut_ad(size >= PAGE_ZIP_MIN_SIZE); + ut_ad(size <= UNIV_PAGE_SIZE); + + return(size); +} +/************************************************************************** +Set the size of a compressed page in bytes. */ +UNIV_INLINE +void +page_zip_set_size( +/*==============*/ + page_zip_des_t* page_zip, /* in/out: compressed page */ + ulint size) /* in: size in bytes */ +{ + if (size) { + int ssize; + + ut_ad(ut_is_2pow(size)); + + for (ssize = 1; size > (ulint) (512 << ssize); ssize++) { + } + + page_zip->ssize = ssize; + } else { + page_zip->ssize = 0; + } + + ut_ad(page_zip_get_size(page_zip) == size); +} + +/************************************************************************** +Determine if a record is so big that it needs to be stored externally. */ +UNIV_INLINE +ibool +page_zip_rec_needs_ext( +/*===================*/ + /* out: FALSE if the entire record + can be stored locally on the page */ + ulint rec_size, /* in: length of the record in bytes */ + ulint comp, /* in: nonzero=compact format */ + ulint n_fields, /* in: number of fields in the record; + ignored if zip_size == 0 */ + ulint zip_size) /* in: compressed page size in bytes, or 0 */ +{ + ut_ad(rec_size > comp ? REC_N_NEW_EXTRA_BYTES : REC_N_OLD_EXTRA_BYTES); + ut_ad(ut_is_2pow(zip_size)); + ut_ad(comp || !zip_size); + +#if UNIV_PAGE_SIZE > REC_MAX_DATA_SIZE + if (UNIV_UNLIKELY(rec_size >= REC_MAX_DATA_SIZE)) { + return(TRUE); + } +#endif + + if (UNIV_UNLIKELY(zip_size)) { + ut_ad(comp); + /* On a compressed page, there is a two-byte entry in + the dense page directory for every record. But there + is no record header. There should be enough room for + one record on an empty leaf page. Subtract 1 byte for + the encoded heap number. Check also the available space + on the uncompressed page. */ + return(rec_size - (REC_N_NEW_EXTRA_BYTES - 2) + >= (page_zip_empty_size(n_fields, zip_size) - 1) + || rec_size >= page_get_free_space_of_empty(TRUE) / 2); + } + + return(rec_size >= page_get_free_space_of_empty(comp) / 2); +} + +#ifdef UNIV_DEBUG +/************************************************************************** +Validate a compressed page descriptor. */ +UNIV_INLINE +ibool +page_zip_simple_validate( +/*=====================*/ + /* out: TRUE if ok */ + const page_zip_des_t* page_zip)/* in: compressed page descriptor */ +{ + ut_ad(page_zip); + ut_ad(page_zip->data); + ut_ad(page_zip->ssize < PAGE_ZIP_NUM_SSIZE); + ut_ad(page_zip_get_size(page_zip) + > PAGE_DATA + PAGE_ZIP_DIR_SLOT_SIZE); + ut_ad(page_zip->m_start <= page_zip->m_end); + ut_ad(page_zip->m_end < page_zip_get_size(page_zip)); + ut_ad(page_zip->n_blobs + < page_zip_get_size(page_zip) / BTR_EXTERN_FIELD_REF_SIZE); + return(TRUE); +} +#endif /* UNIV_DEBUG */ + +/************************************************************************** +Determine if the length of the page trailer. */ +UNIV_INLINE +ibool +page_zip_get_trailer_len( +/*=====================*/ + /* out: length of the page trailer, + in bytes, not including the terminating + zero byte of the modification log */ + const page_zip_des_t* page_zip,/* in: compressed page */ + ibool is_clust,/* in: TRUE if clustered index */ + ulint* entry_size)/* out: size of the uncompressed + portion of a user record */ +{ + ulint uncompressed_size; + + ut_ad(page_zip_simple_validate(page_zip)); + UNIV_MEM_ASSERT_RW(page_zip->data, page_zip_get_size(page_zip)); + + if (UNIV_UNLIKELY(!page_is_leaf(page_zip->data))) { + uncompressed_size = PAGE_ZIP_DIR_SLOT_SIZE + + REC_NODE_PTR_SIZE; + ut_ad(!page_zip->n_blobs); + } else if (UNIV_UNLIKELY(is_clust)) { + uncompressed_size = PAGE_ZIP_DIR_SLOT_SIZE + + DATA_TRX_ID_LEN + DATA_ROLL_PTR_LEN; + } else { + uncompressed_size = PAGE_ZIP_DIR_SLOT_SIZE; + ut_ad(!page_zip->n_blobs); + } + + if (entry_size) { + *entry_size = uncompressed_size; + } + + return((page_dir_get_n_heap(page_zip->data) - 2) + * uncompressed_size + + page_zip->n_blobs * BTR_EXTERN_FIELD_REF_SIZE); +} + +/************************************************************************** +Determine how big record can be inserted without recompressing the page. */ +UNIV_INLINE +lint +page_zip_max_ins_size( +/*==================*/ + /* out: a positive number + indicating the maximum size of + a record whose insertion is + guaranteed to succeed, or + zero or negative */ + const page_zip_des_t* page_zip,/* in: compressed page */ + ibool is_clust)/* in: TRUE if clustered index */ +{ + ulint uncompressed_size; + ulint trailer_len; + + trailer_len = page_zip_get_trailer_len(page_zip, is_clust, + &uncompressed_size); + + /* When a record is created, a pointer may be added to + the dense directory. + Likewise, space for the columns that will not be + compressed will be allocated from the page trailer. + Also the BLOB pointers will be allocated from there, but + we may as well count them in the length of the record. */ + + trailer_len += uncompressed_size; + + return((lint) page_zip_get_size(page_zip) + - trailer_len - page_zip->m_end + - (REC_N_NEW_EXTRA_BYTES - 2)); +} + +/************************************************************************** +Determine if enough space is available in the modification log. */ +UNIV_INLINE +ibool +page_zip_available( +/*===============*/ + /* out: TRUE if enough space + is available */ + const page_zip_des_t* page_zip,/* in: compressed page */ + ibool is_clust,/* in: TRUE if clustered index */ + ulint length, /* in: combined size of the record */ + ulint create) /* in: nonzero=add the record to + the heap */ +{ + ulint uncompressed_size; + ulint trailer_len; + + ut_ad(length > REC_N_NEW_EXTRA_BYTES); + + trailer_len = page_zip_get_trailer_len(page_zip, is_clust, + &uncompressed_size); + + /* Subtract the fixed extra bytes and add the maximum + space needed for identifying the record (encoded heap_no). */ + length -= REC_N_NEW_EXTRA_BYTES - 2; + + if (UNIV_UNLIKELY(create)) { + /* When a record is created, a pointer may be added to + the dense directory. + Likewise, space for the columns that will not be + compressed will be allocated from the page trailer. + Also the BLOB pointers will be allocated from there, but + we may as well count them in the length of the record. */ + + trailer_len += uncompressed_size; + } + + return(UNIV_LIKELY(length + + trailer_len + + page_zip->m_end + < page_zip_get_size(page_zip))); +} + +/************************************************************************** +Initialize a compressed page descriptor. */ +UNIV_INLINE +void +page_zip_des_init( +/*==============*/ + page_zip_des_t* page_zip) /* in/out: compressed page + descriptor */ +{ + memset(page_zip, 0, sizeof *page_zip); +} + +/************************************************************************** +Write a log record of writing to the uncompressed header portion of a page. */ +UNIV_INTERN +void +page_zip_write_header_log( +/*======================*/ + const byte* data,/* in: data on the uncompressed page */ + ulint length, /* in: length of the data */ + mtr_t* mtr); /* in: mini-transaction */ + +/************************************************************************** +Write data to the uncompressed header portion of a page. The data must +already have been written to the uncompressed page. +However, the data portion of the uncompressed page may differ from +the compressed page when a record is being inserted in +page_cur_insert_rec_zip(). */ +UNIV_INLINE +void +page_zip_write_header( +/*==================*/ + page_zip_des_t* page_zip,/* in/out: compressed page */ + const byte* str, /* in: address on the uncompressed page */ + ulint length, /* in: length of the data */ + mtr_t* mtr) /* in: mini-transaction, or NULL */ +{ + ulint pos; + + ut_ad(buf_frame_get_page_zip(str) == page_zip); + ut_ad(page_zip_simple_validate(page_zip)); + UNIV_MEM_ASSERT_RW(page_zip->data, page_zip_get_size(page_zip)); + + pos = page_offset(str); + + ut_ad(pos < PAGE_DATA); + + memcpy(page_zip->data + pos, str, length); + + /* The following would fail in page_cur_insert_rec_zip(). */ + /* ut_ad(page_zip_validate(page_zip, str - pos)); */ + + if (UNIV_LIKELY_NULL(mtr)) { + page_zip_write_header_log(str, length, mtr); + } +} + +#ifdef UNIV_MATERIALIZE +# undef UNIV_INLINE +# define UNIV_INLINE UNIV_INLINE_ORIGINAL +#endif === added file 'storage/xtradb/include/pars0grm.h' --- a/storage/xtradb/include/pars0grm.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/pars0grm.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,236 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. +Copyright (c) 1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004 Free Software +Foundation, Inc. + +As a special exception, when this file is copied by Bison into a +Bison output file, you may use that output file without restriction. +This special exception was added by the Free Software Foundation +in version 1.24 of Bison. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/* A Bison parser, made by GNU Bison 1.875d. */ + +/* Tokens. */ +#ifndef YYTOKENTYPE +# define YYTOKENTYPE + /* Put the tokens into the symbol table, so that GDB and other debuggers + know about them. */ + enum yytokentype { + PARS_INT_LIT = 258, + PARS_FLOAT_LIT = 259, + PARS_STR_LIT = 260, + PARS_FIXBINARY_LIT = 261, + PARS_BLOB_LIT = 262, + PARS_NULL_LIT = 263, + PARS_ID_TOKEN = 264, + PARS_AND_TOKEN = 265, + PARS_OR_TOKEN = 266, + PARS_NOT_TOKEN = 267, + PARS_GE_TOKEN = 268, + PARS_LE_TOKEN = 269, + PARS_NE_TOKEN = 270, + PARS_PROCEDURE_TOKEN = 271, + PARS_IN_TOKEN = 272, + PARS_OUT_TOKEN = 273, + PARS_BINARY_TOKEN = 274, + PARS_BLOB_TOKEN = 275, + PARS_INT_TOKEN = 276, + PARS_INTEGER_TOKEN = 277, + PARS_FLOAT_TOKEN = 278, + PARS_CHAR_TOKEN = 279, + PARS_IS_TOKEN = 280, + PARS_BEGIN_TOKEN = 281, + PARS_END_TOKEN = 282, + PARS_IF_TOKEN = 283, + PARS_THEN_TOKEN = 284, + PARS_ELSE_TOKEN = 285, + PARS_ELSIF_TOKEN = 286, + PARS_LOOP_TOKEN = 287, + PARS_WHILE_TOKEN = 288, + PARS_RETURN_TOKEN = 289, + PARS_SELECT_TOKEN = 290, + PARS_SUM_TOKEN = 291, + PARS_COUNT_TOKEN = 292, + PARS_DISTINCT_TOKEN = 293, + PARS_FROM_TOKEN = 294, + PARS_WHERE_TOKEN = 295, + PARS_FOR_TOKEN = 296, + PARS_DDOT_TOKEN = 297, + PARS_READ_TOKEN = 298, + PARS_ORDER_TOKEN = 299, + PARS_BY_TOKEN = 300, + PARS_ASC_TOKEN = 301, + PARS_DESC_TOKEN = 302, + PARS_INSERT_TOKEN = 303, + PARS_INTO_TOKEN = 304, + PARS_VALUES_TOKEN = 305, + PARS_UPDATE_TOKEN = 306, + PARS_SET_TOKEN = 307, + PARS_DELETE_TOKEN = 308, + PARS_CURRENT_TOKEN = 309, + PARS_OF_TOKEN = 310, + PARS_CREATE_TOKEN = 311, + PARS_TABLE_TOKEN = 312, + PARS_INDEX_TOKEN = 313, + PARS_UNIQUE_TOKEN = 314, + PARS_CLUSTERED_TOKEN = 315, + PARS_DOES_NOT_FIT_IN_MEM_TOKEN = 316, + PARS_ON_TOKEN = 317, + PARS_ASSIGN_TOKEN = 318, + PARS_DECLARE_TOKEN = 319, + PARS_CURSOR_TOKEN = 320, + PARS_SQL_TOKEN = 321, + PARS_OPEN_TOKEN = 322, + PARS_FETCH_TOKEN = 323, + PARS_CLOSE_TOKEN = 324, + PARS_NOTFOUND_TOKEN = 325, + PARS_TO_CHAR_TOKEN = 326, + PARS_TO_NUMBER_TOKEN = 327, + PARS_TO_BINARY_TOKEN = 328, + PARS_BINARY_TO_NUMBER_TOKEN = 329, + PARS_SUBSTR_TOKEN = 330, + PARS_REPLSTR_TOKEN = 331, + PARS_CONCAT_TOKEN = 332, + PARS_INSTR_TOKEN = 333, + PARS_LENGTH_TOKEN = 334, + PARS_SYSDATE_TOKEN = 335, + PARS_PRINTF_TOKEN = 336, + PARS_ASSERT_TOKEN = 337, + PARS_RND_TOKEN = 338, + PARS_RND_STR_TOKEN = 339, + PARS_ROW_PRINTF_TOKEN = 340, + PARS_COMMIT_TOKEN = 341, + PARS_ROLLBACK_TOKEN = 342, + PARS_WORK_TOKEN = 343, + PARS_UNSIGNED_TOKEN = 344, + PARS_EXIT_TOKEN = 345, + PARS_FUNCTION_TOKEN = 346, + PARS_LOCK_TOKEN = 347, + PARS_SHARE_TOKEN = 348, + PARS_MODE_TOKEN = 349, + NEG = 350 + }; +#endif +#define PARS_INT_LIT 258 +#define PARS_FLOAT_LIT 259 +#define PARS_STR_LIT 260 +#define PARS_FIXBINARY_LIT 261 +#define PARS_BLOB_LIT 262 +#define PARS_NULL_LIT 263 +#define PARS_ID_TOKEN 264 +#define PARS_AND_TOKEN 265 +#define PARS_OR_TOKEN 266 +#define PARS_NOT_TOKEN 267 +#define PARS_GE_TOKEN 268 +#define PARS_LE_TOKEN 269 +#define PARS_NE_TOKEN 270 +#define PARS_PROCEDURE_TOKEN 271 +#define PARS_IN_TOKEN 272 +#define PARS_OUT_TOKEN 273 +#define PARS_BINARY_TOKEN 274 +#define PARS_BLOB_TOKEN 275 +#define PARS_INT_TOKEN 276 +#define PARS_INTEGER_TOKEN 277 +#define PARS_FLOAT_TOKEN 278 +#define PARS_CHAR_TOKEN 279 +#define PARS_IS_TOKEN 280 +#define PARS_BEGIN_TOKEN 281 +#define PARS_END_TOKEN 282 +#define PARS_IF_TOKEN 283 +#define PARS_THEN_TOKEN 284 +#define PARS_ELSE_TOKEN 285 +#define PARS_ELSIF_TOKEN 286 +#define PARS_LOOP_TOKEN 287 +#define PARS_WHILE_TOKEN 288 +#define PARS_RETURN_TOKEN 289 +#define PARS_SELECT_TOKEN 290 +#define PARS_SUM_TOKEN 291 +#define PARS_COUNT_TOKEN 292 +#define PARS_DISTINCT_TOKEN 293 +#define PARS_FROM_TOKEN 294 +#define PARS_WHERE_TOKEN 295 +#define PARS_FOR_TOKEN 296 +#define PARS_DDOT_TOKEN 297 +#define PARS_READ_TOKEN 298 +#define PARS_ORDER_TOKEN 299 +#define PARS_BY_TOKEN 300 +#define PARS_ASC_TOKEN 301 +#define PARS_DESC_TOKEN 302 +#define PARS_INSERT_TOKEN 303 +#define PARS_INTO_TOKEN 304 +#define PARS_VALUES_TOKEN 305 +#define PARS_UPDATE_TOKEN 306 +#define PARS_SET_TOKEN 307 +#define PARS_DELETE_TOKEN 308 +#define PARS_CURRENT_TOKEN 309 +#define PARS_OF_TOKEN 310 +#define PARS_CREATE_TOKEN 311 +#define PARS_TABLE_TOKEN 312 +#define PARS_INDEX_TOKEN 313 +#define PARS_UNIQUE_TOKEN 314 +#define PARS_CLUSTERED_TOKEN 315 +#define PARS_DOES_NOT_FIT_IN_MEM_TOKEN 316 +#define PARS_ON_TOKEN 317 +#define PARS_ASSIGN_TOKEN 318 +#define PARS_DECLARE_TOKEN 319 +#define PARS_CURSOR_TOKEN 320 +#define PARS_SQL_TOKEN 321 +#define PARS_OPEN_TOKEN 322 +#define PARS_FETCH_TOKEN 323 +#define PARS_CLOSE_TOKEN 324 +#define PARS_NOTFOUND_TOKEN 325 +#define PARS_TO_CHAR_TOKEN 326 +#define PARS_TO_NUMBER_TOKEN 327 +#define PARS_TO_BINARY_TOKEN 328 +#define PARS_BINARY_TO_NUMBER_TOKEN 329 +#define PARS_SUBSTR_TOKEN 330 +#define PARS_REPLSTR_TOKEN 331 +#define PARS_CONCAT_TOKEN 332 +#define PARS_INSTR_TOKEN 333 +#define PARS_LENGTH_TOKEN 334 +#define PARS_SYSDATE_TOKEN 335 +#define PARS_PRINTF_TOKEN 336 +#define PARS_ASSERT_TOKEN 337 +#define PARS_RND_TOKEN 338 +#define PARS_RND_STR_TOKEN 339 +#define PARS_ROW_PRINTF_TOKEN 340 +#define PARS_COMMIT_TOKEN 341 +#define PARS_ROLLBACK_TOKEN 342 +#define PARS_WORK_TOKEN 343 +#define PARS_UNSIGNED_TOKEN 344 +#define PARS_EXIT_TOKEN 345 +#define PARS_FUNCTION_TOKEN 346 +#define PARS_LOCK_TOKEN 347 +#define PARS_SHARE_TOKEN 348 +#define PARS_MODE_TOKEN 349 +#define NEG 350 + + + + +#if ! defined (YYSTYPE) && ! defined (YYSTYPE_IS_DECLARED) +typedef int YYSTYPE; +# define yystype YYSTYPE /* obsolescent; will be withdrawn */ +# define YYSTYPE_IS_DECLARED 1 +# define YYSTYPE_IS_TRIVIAL 1 +#endif + +extern YYSTYPE yylval; + + + === added file 'storage/xtradb/include/pars0opt.h' --- a/storage/xtradb/include/pars0opt.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/pars0opt.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,74 @@ +/***************************************************************************** + +Copyright (c) 1997, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Simple SQL optimizer + +Created 12/21/1997 Heikki Tuuri +*******************************************************/ + +#ifndef pars0opt_h +#define pars0opt_h + +#include "univ.i" +#include "que0types.h" +#include "usr0types.h" +#include "pars0sym.h" +#include "dict0types.h" +#include "row0sel.h" + +/*********************************************************************** +Optimizes a select. Decides which indexes to tables to use. The tables +are accessed in the order that they were written to the FROM part in the +select statement. */ +UNIV_INTERN +void +opt_search_plan( +/*============*/ + sel_node_t* sel_node); /* in: parsed select node */ +/*********************************************************************** +Looks for occurrences of the columns of the table in the query subgraph and +adds them to the list of columns if an occurrence of the same column does not +already exist in the list. If the column is already in the list, puts a value +indirection to point to the occurrence in the column list, except if the +column occurrence we are looking at is in the column list, in which case +nothing is done. */ +UNIV_INTERN +void +opt_find_all_cols( +/*==============*/ + ibool copy_val, /* in: if TRUE, new found columns are + added as columns to copy */ + dict_index_t* index, /* in: index to use */ + sym_node_list_t* col_list, /* in: base node of a list where + to add new found columns */ + plan_t* plan, /* in: plan or NULL */ + que_node_t* exp); /* in: expression or condition */ +/************************************************************************ +Prints info of a query plan. */ +UNIV_INTERN +void +opt_print_query_plan( +/*=================*/ + sel_node_t* sel_node); /* in: select node */ + +#ifndef UNIV_NONINL +#include "pars0opt.ic" +#endif + +#endif === added file 'storage/xtradb/include/pars0opt.ic' --- a/storage/xtradb/include/pars0opt.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/pars0opt.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,23 @@ +/***************************************************************************** + +Copyright (c) 1997, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Simple SQL optimizer + +Created 12/21/1997 Heikki Tuuri +*******************************************************/ === added file 'storage/xtradb/include/pars0pars.h' --- a/storage/xtradb/include/pars0pars.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/pars0pars.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,747 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +SQL parser + +Created 11/19/1996 Heikki Tuuri +*******************************************************/ + +#ifndef pars0pars_h +#define pars0pars_h + +#include "univ.i" +#include "que0types.h" +#include "usr0types.h" +#include "pars0types.h" +#include "row0types.h" +#include "trx0types.h" +#include "ut0vec.h" + +/* Type of the user functions. The first argument is always InnoDB-supplied +and varies in type, while 'user_arg' is a user-supplied argument. The +meaning of the return type also varies. See the individual use cases, e.g. +the FETCH statement, for details on them. */ +typedef void* (*pars_user_func_cb_t)(void* arg, void* user_arg); + +extern int yydebug; + +/* If the following is set TRUE, the lexer will print the SQL string +as it tokenizes it */ + +#ifdef UNIV_SQL_DEBUG +extern ibool pars_print_lexed; +#endif /* UNIV_SQL_DEBUG */ + +/* Global variable used while parsing a single procedure or query : the code is +NOT re-entrant */ +extern sym_tab_t* pars_sym_tab_global; + +extern pars_res_word_t pars_to_char_token; +extern pars_res_word_t pars_to_number_token; +extern pars_res_word_t pars_to_binary_token; +extern pars_res_word_t pars_binary_to_number_token; +extern pars_res_word_t pars_substr_token; +extern pars_res_word_t pars_replstr_token; +extern pars_res_word_t pars_concat_token; +extern pars_res_word_t pars_length_token; +extern pars_res_word_t pars_instr_token; +extern pars_res_word_t pars_sysdate_token; +extern pars_res_word_t pars_printf_token; +extern pars_res_word_t pars_assert_token; +extern pars_res_word_t pars_rnd_token; +extern pars_res_word_t pars_rnd_str_token; +extern pars_res_word_t pars_count_token; +extern pars_res_word_t pars_sum_token; +extern pars_res_word_t pars_distinct_token; +extern pars_res_word_t pars_binary_token; +extern pars_res_word_t pars_blob_token; +extern pars_res_word_t pars_int_token; +extern pars_res_word_t pars_char_token; +extern pars_res_word_t pars_float_token; +extern pars_res_word_t pars_update_token; +extern pars_res_word_t pars_asc_token; +extern pars_res_word_t pars_desc_token; +extern pars_res_word_t pars_open_token; +extern pars_res_word_t pars_close_token; +extern pars_res_word_t pars_share_token; +extern pars_res_word_t pars_unique_token; +extern pars_res_word_t pars_clustered_token; + +extern ulint pars_star_denoter; + +/* Procedure parameter types */ +#define PARS_INPUT 0 +#define PARS_OUTPUT 1 +#define PARS_NOT_PARAM 2 + +int +yyparse(void); + +/***************************************************************** +Parses an SQL string returning the query graph. */ +UNIV_INTERN +que_t* +pars_sql( +/*=====*/ + /* out, own: the query graph */ + pars_info_t* info, /* in: extra information, or NULL */ + const char* str); /* in: SQL string */ +/***************************************************************** +Retrieves characters to the lexical analyzer. */ +UNIV_INTERN +void +pars_get_lex_chars( +/*===============*/ + char* buf, /* in/out: buffer where to copy */ + int* result, /* out: number of characters copied or EOF */ + int max_size); /* in: maximum number of characters which fit + in the buffer */ +/***************************************************************** +Called by yyparse on error. */ +UNIV_INTERN +void +yyerror( +/*====*/ + const char* s); /* in: error message string */ +/************************************************************************* +Parses a variable declaration. */ +UNIV_INTERN +sym_node_t* +pars_variable_declaration( +/*======================*/ + /* out, own: symbol table node of type + SYM_VAR */ + sym_node_t* node, /* in: symbol table node allocated for the + id of the variable */ + pars_res_word_t* type); /* in: pointer to a type token */ +/************************************************************************* +Parses a function expression. */ +UNIV_INTERN +func_node_t* +pars_func( +/*======*/ + /* out, own: function node in a query tree */ + que_node_t* res_word,/* in: function name reserved word */ + que_node_t* arg); /* in: first argument in the argument list */ +/************************************************************************* +Parses an operator expression. */ +UNIV_INTERN +func_node_t* +pars_op( +/*====*/ + /* out, own: function node in a query tree */ + int func, /* in: operator token code */ + que_node_t* arg1, /* in: first argument */ + que_node_t* arg2); /* in: second argument or NULL for an unary + operator */ +/************************************************************************* +Parses an ORDER BY clause. Order by a single column only is supported. */ +UNIV_INTERN +order_node_t* +pars_order_by( +/*==========*/ + /* out, own: order-by node in a query tree */ + sym_node_t* column, /* in: column name */ + pars_res_word_t* asc); /* in: &pars_asc_token or pars_desc_token */ +/************************************************************************* +Parses a select list; creates a query graph node for the whole SELECT +statement. */ +UNIV_INTERN +sel_node_t* +pars_select_list( +/*=============*/ + /* out, own: select node in a query + tree */ + que_node_t* select_list, /* in: select list */ + sym_node_t* into_list); /* in: variables list or NULL */ +/************************************************************************* +Parses a cursor declaration. */ +UNIV_INTERN +que_node_t* +pars_cursor_declaration( +/*====================*/ + /* out: sym_node */ + sym_node_t* sym_node, /* in: cursor id node in the symbol + table */ + sel_node_t* select_node); /* in: select node */ +/************************************************************************* +Parses a function declaration. */ +UNIV_INTERN +que_node_t* +pars_function_declaration( +/*======================*/ + /* out: sym_node */ + sym_node_t* sym_node); /* in: function id node in the symbol + table */ +/************************************************************************* +Parses a select statement. */ +UNIV_INTERN +sel_node_t* +pars_select_statement( +/*==================*/ + /* out, own: select node in a query + tree */ + sel_node_t* select_node, /* in: select node already containing + the select list */ + sym_node_t* table_list, /* in: table list */ + que_node_t* search_cond, /* in: search condition or NULL */ + pars_res_word_t* for_update, /* in: NULL or &pars_update_token */ + pars_res_word_t* consistent_read,/* in: NULL or + &pars_consistent_token */ + order_node_t* order_by); /* in: NULL or an order-by node */ +/************************************************************************* +Parses a column assignment in an update. */ +UNIV_INTERN +col_assign_node_t* +pars_column_assignment( +/*===================*/ + /* out: column assignment node */ + sym_node_t* column, /* in: column to assign */ + que_node_t* exp); /* in: value to assign */ +/************************************************************************* +Parses a delete or update statement start. */ +UNIV_INTERN +upd_node_t* +pars_update_statement_start( +/*========================*/ + /* out, own: update node in a query + tree */ + ibool is_delete, /* in: TRUE if delete */ + sym_node_t* table_sym, /* in: table name node */ + col_assign_node_t* col_assign_list);/* in: column assignment list, NULL + if delete */ +/************************************************************************* +Parses an update or delete statement. */ +UNIV_INTERN +upd_node_t* +pars_update_statement( +/*==================*/ + /* out, own: update node in a query + tree */ + upd_node_t* node, /* in: update node */ + sym_node_t* cursor_sym, /* in: pointer to a cursor entry in + the symbol table or NULL */ + que_node_t* search_cond); /* in: search condition or NULL */ +/************************************************************************* +Parses an insert statement. */ +UNIV_INTERN +ins_node_t* +pars_insert_statement( +/*==================*/ + /* out, own: update node in a query + tree */ + sym_node_t* table_sym, /* in: table name node */ + que_node_t* values_list, /* in: value expression list or NULL */ + sel_node_t* select); /* in: select condition or NULL */ +/************************************************************************* +Parses a procedure parameter declaration. */ +UNIV_INTERN +sym_node_t* +pars_parameter_declaration( +/*=======================*/ + /* out, own: symbol table node of type + SYM_VAR */ + sym_node_t* node, /* in: symbol table node allocated for the + id of the parameter */ + ulint param_type, + /* in: PARS_INPUT or PARS_OUTPUT */ + pars_res_word_t* type); /* in: pointer to a type token */ +/************************************************************************* +Parses an elsif element. */ +UNIV_INTERN +elsif_node_t* +pars_elsif_element( +/*===============*/ + /* out: elsif node */ + que_node_t* cond, /* in: if-condition */ + que_node_t* stat_list); /* in: statement list */ +/************************************************************************* +Parses an if-statement. */ +UNIV_INTERN +if_node_t* +pars_if_statement( +/*==============*/ + /* out: if-statement node */ + que_node_t* cond, /* in: if-condition */ + que_node_t* stat_list, /* in: statement list */ + que_node_t* else_part); /* in: else-part statement list */ +/************************************************************************* +Parses a for-loop-statement. */ +UNIV_INTERN +for_node_t* +pars_for_statement( +/*===============*/ + /* out: for-statement node */ + sym_node_t* loop_var, /* in: loop variable */ + que_node_t* loop_start_limit,/* in: loop start expression */ + que_node_t* loop_end_limit, /* in: loop end expression */ + que_node_t* stat_list); /* in: statement list */ +/************************************************************************* +Parses a while-statement. */ +UNIV_INTERN +while_node_t* +pars_while_statement( +/*=================*/ + /* out: while-statement node */ + que_node_t* cond, /* in: while-condition */ + que_node_t* stat_list); /* in: statement list */ +/************************************************************************* +Parses an exit statement. */ +UNIV_INTERN +exit_node_t* +pars_exit_statement(void); +/*=====================*/ + /* out: exit statement node */ +/************************************************************************* +Parses a return-statement. */ +UNIV_INTERN +return_node_t* +pars_return_statement(void); +/*=======================*/ + /* out: return-statement node */ +/************************************************************************* +Parses a procedure call. */ +UNIV_INTERN +func_node_t* +pars_procedure_call( +/*================*/ + /* out: function node */ + que_node_t* res_word,/* in: procedure name reserved word */ + que_node_t* args); /* in: argument list */ +/************************************************************************* +Parses an assignment statement. */ +UNIV_INTERN +assign_node_t* +pars_assignment_statement( +/*======================*/ + /* out: assignment statement node */ + sym_node_t* var, /* in: variable to assign */ + que_node_t* val); /* in: value to assign */ +/************************************************************************* +Parses a fetch statement. into_list or user_func (but not both) must be +non-NULL. */ +UNIV_INTERN +fetch_node_t* +pars_fetch_statement( +/*=================*/ + /* out: fetch statement node */ + sym_node_t* cursor, /* in: cursor node */ + sym_node_t* into_list, /* in: variables to set, or NULL */ + sym_node_t* user_func); /* in: user function name, or NULL */ +/************************************************************************* +Parses an open or close cursor statement. */ +UNIV_INTERN +open_node_t* +pars_open_statement( +/*================*/ + /* out: fetch statement node */ + ulint type, /* in: ROW_SEL_OPEN_CURSOR + or ROW_SEL_CLOSE_CURSOR */ + sym_node_t* cursor); /* in: cursor node */ +/************************************************************************* +Parses a row_printf-statement. */ +UNIV_INTERN +row_printf_node_t* +pars_row_printf_statement( +/*======================*/ + /* out: row_printf-statement node */ + sel_node_t* sel_node); /* in: select node */ +/************************************************************************* +Parses a commit statement. */ +UNIV_INTERN +commit_node_t* +pars_commit_statement(void); +/*=======================*/ +/************************************************************************* +Parses a rollback statement. */ +UNIV_INTERN +roll_node_t* +pars_rollback_statement(void); +/*=========================*/ +/************************************************************************* +Parses a column definition at a table creation. */ +UNIV_INTERN +sym_node_t* +pars_column_def( +/*============*/ + /* out: column sym table + node */ + sym_node_t* sym_node, /* in: column node in the + symbol table */ + pars_res_word_t* type, /* in: data type */ + sym_node_t* len, /* in: length of column, or + NULL */ + void* is_unsigned, /* in: if not NULL, column + is of type UNSIGNED. */ + void* is_not_null); /* in: if not NULL, column + is of type NOT NULL. */ +/************************************************************************* +Parses a table creation operation. */ +UNIV_INTERN +tab_node_t* +pars_create_table( +/*==============*/ + /* out: table create subgraph */ + sym_node_t* table_sym, /* in: table name node in the symbol + table */ + sym_node_t* column_defs, /* in: list of column names */ + void* not_fit_in_memory);/* in: a non-NULL pointer means that + this is a table which in simulations + should be simulated as not fitting + in memory; thread is put to sleep + to simulate disk accesses; NOTE that + this flag is not stored to the data + dictionary on disk, and the database + will forget about non-NULL value if + it has to reload the table definition + from disk */ +/************************************************************************* +Parses an index creation operation. */ +UNIV_INTERN +ind_node_t* +pars_create_index( +/*==============*/ + /* out: index create subgraph */ + pars_res_word_t* unique_def, /* in: not NULL if a unique index */ + pars_res_word_t* clustered_def, /* in: not NULL if a clustered index */ + sym_node_t* index_sym, /* in: index name node in the symbol + table */ + sym_node_t* table_sym, /* in: table name node in the symbol + table */ + sym_node_t* column_list); /* in: list of column names */ +/************************************************************************* +Parses a procedure definition. */ +UNIV_INTERN +que_fork_t* +pars_procedure_definition( +/*======================*/ + /* out: query fork node */ + sym_node_t* sym_node, /* in: procedure id node in the symbol + table */ + sym_node_t* param_list, /* in: parameter declaration list */ + que_node_t* stat_list); /* in: statement list */ + +/***************************************************************** +Parses a stored procedure call, when this is not within another stored +procedure, that is, the client issues a procedure call directly. +In MySQL/InnoDB, stored InnoDB procedures are invoked via the +parsed procedure tree, not via InnoDB SQL, so this function is not used. */ +UNIV_INTERN +que_fork_t* +pars_stored_procedure_call( +/*=======================*/ + /* out: query graph */ + sym_node_t* sym_node); /* in: stored procedure name */ +/********************************************************************** +Completes a query graph by adding query thread and fork nodes +above it and prepares the graph for running. The fork created is of +type QUE_FORK_MYSQL_INTERFACE. */ +UNIV_INTERN +que_thr_t* +pars_complete_graph_for_exec( +/*=========================*/ + /* out: query thread node to run */ + que_node_t* node, /* in: root node for an incomplete + query graph */ + trx_t* trx, /* in: transaction handle */ + mem_heap_t* heap); /* in: memory heap from which allocated */ + +/******************************************************************** +Create parser info struct.*/ +UNIV_INTERN +pars_info_t* +pars_info_create(void); +/*==================*/ + /* out, own: info struct */ + +/******************************************************************** +Free info struct and everything it contains.*/ +UNIV_INTERN +void +pars_info_free( +/*===========*/ + pars_info_t* info); /* in: info struct */ + +/******************************************************************** +Add bound literal. */ +UNIV_INTERN +void +pars_info_add_literal( +/*==================*/ + pars_info_t* info, /* in: info struct */ + const char* name, /* in: name */ + const void* address, /* in: address */ + ulint length, /* in: length of data */ + ulint type, /* in: type, e.g. DATA_FIXBINARY */ + ulint prtype); /* in: precise type, e.g. + DATA_UNSIGNED */ + +/******************************************************************** +Equivalent to pars_info_add_literal(info, name, str, strlen(str), +DATA_VARCHAR, DATA_ENGLISH). */ +UNIV_INTERN +void +pars_info_add_str_literal( +/*======================*/ + pars_info_t* info, /* in: info struct */ + const char* name, /* in: name */ + const char* str); /* in: string */ + +/******************************************************************** +Equivalent to: + +char buf[4]; +mach_write_to_4(buf, val); +pars_info_add_literal(info, name, buf, 4, DATA_INT, 0); + +except that the buffer is dynamically allocated from the info struct's +heap. */ +UNIV_INTERN +void +pars_info_add_int4_literal( +/*=======================*/ + pars_info_t* info, /* in: info struct */ + const char* name, /* in: name */ + lint val); /* in: value */ + +/******************************************************************** +Equivalent to: + +char buf[8]; +mach_write_to_8(buf, val); +pars_info_add_literal(info, name, buf, 8, DATA_BINARY, 0); + +except that the buffer is dynamically allocated from the info struct's +heap. */ +UNIV_INTERN +void +pars_info_add_dulint_literal( +/*=========================*/ + pars_info_t* info, /* in: info struct */ + const char* name, /* in: name */ + dulint val); /* in: value */ +/******************************************************************** +Add user function. */ +UNIV_INTERN +void +pars_info_add_function( +/*===================*/ + pars_info_t* info, /* in: info struct */ + const char* name, /* in: function name */ + pars_user_func_cb_t func, /* in: function address */ + void* arg); /* in: user-supplied argument */ + +/******************************************************************** +Add bound id. */ +UNIV_INTERN +void +pars_info_add_id( +/*=============*/ + pars_info_t* info, /* in: info struct */ + const char* name, /* in: name */ + const char* id); /* in: id */ + +/******************************************************************** +Get user function with the given name.*/ +UNIV_INTERN +pars_user_func_t* +pars_info_get_user_func( +/*====================*/ + /* out: user func, or NULL if not + found */ + pars_info_t* info, /* in: info struct */ + const char* name); /* in: function name to find*/ + +/******************************************************************** +Get bound literal with the given name.*/ +UNIV_INTERN +pars_bound_lit_t* +pars_info_get_bound_lit( +/*====================*/ + /* out: bound literal, or NULL if + not found */ + pars_info_t* info, /* in: info struct */ + const char* name); /* in: bound literal name to find */ + +/******************************************************************** +Get bound id with the given name.*/ +UNIV_INTERN +pars_bound_id_t* +pars_info_get_bound_id( +/*===================*/ + /* out: bound id, or NULL if not + found */ + pars_info_t* info, /* in: info struct */ + const char* name); /* in: bound id name to find */ + + +/* Extra information supplied for pars_sql(). */ +struct pars_info_struct { + mem_heap_t* heap; /* our own memory heap */ + + ib_vector_t* funcs; /* user functions, or NUll + (pars_user_func_t*) */ + ib_vector_t* bound_lits; /* bound literals, or NULL + (pars_bound_lit_t*) */ + ib_vector_t* bound_ids; /* bound ids, or NULL + (pars_bound_id_t*) */ + + ibool graph_owns_us; /* if TRUE (which is the default), + que_graph_free() will free us */ +}; + +/* User-supplied function and argument. */ +struct pars_user_func_struct { + const char* name; /* function name */ + pars_user_func_cb_t func; /* function address */ + void* arg; /* user-supplied argument */ +}; + +/* Bound literal. */ +struct pars_bound_lit_struct { + const char* name; /* name */ + const void* address; /* address */ + ulint length; /* length of data */ + ulint type; /* type, e.g. DATA_FIXBINARY */ + ulint prtype; /* precise type, e.g. DATA_UNSIGNED */ +}; + +/* Bound id. */ +struct pars_bound_id_struct { + const char* name; /* name */ + const char* id; /* id */ +}; + +/* Struct used to denote a reserved word in a parsing tree */ +struct pars_res_word_struct{ + int code; /* the token code for the reserved word from + pars0grm.h */ +}; + +/* A predefined function or operator node in a parsing tree; this construct +is also used for some non-functions like the assignment ':=' */ +struct func_node_struct{ + que_common_t common; /* type: QUE_NODE_FUNC */ + int func; /* token code of the function name */ + ulint class; /* class of the function */ + que_node_t* args; /* argument(s) of the function */ + UT_LIST_NODE_T(func_node_t) cond_list; + /* list of comparison conditions; defined + only for comparison operator nodes except, + presently, for OPT_SCROLL_TYPE ones */ + UT_LIST_NODE_T(func_node_t) func_node_list; + /* list of function nodes in a parsed + query graph */ +}; + +/* An order-by node in a select */ +struct order_node_struct{ + que_common_t common; /* type: QUE_NODE_ORDER */ + sym_node_t* column; /* order-by column */ + ibool asc; /* TRUE if ascending, FALSE if descending */ +}; + +/* Procedure definition node */ +struct proc_node_struct{ + que_common_t common; /* type: QUE_NODE_PROC */ + sym_node_t* proc_id; /* procedure name symbol in the symbol + table of this same procedure */ + sym_node_t* param_list; /* input and output parameters */ + que_node_t* stat_list; /* statement list */ + sym_tab_t* sym_tab; /* symbol table of this procedure */ +}; + +/* elsif-element node */ +struct elsif_node_struct{ + que_common_t common; /* type: QUE_NODE_ELSIF */ + que_node_t* cond; /* if condition */ + que_node_t* stat_list; /* statement list */ +}; + +/* if-statement node */ +struct if_node_struct{ + que_common_t common; /* type: QUE_NODE_IF */ + que_node_t* cond; /* if condition */ + que_node_t* stat_list; /* statement list */ + que_node_t* else_part; /* else-part statement list */ + elsif_node_t* elsif_list; /* elsif element list */ +}; + +/* while-statement node */ +struct while_node_struct{ + que_common_t common; /* type: QUE_NODE_WHILE */ + que_node_t* cond; /* while condition */ + que_node_t* stat_list; /* statement list */ +}; + +/* for-loop-statement node */ +struct for_node_struct{ + que_common_t common; /* type: QUE_NODE_FOR */ + sym_node_t* loop_var; /* loop variable: this is the + dereferenced symbol from the + variable declarations, not the + symbol occurrence in the for loop + definition */ + que_node_t* loop_start_limit;/* initial value of loop variable */ + que_node_t* loop_end_limit; /* end value of loop variable */ + int loop_end_value; /* evaluated value for the end value: + it is calculated only when the loop + is entered, and will not change within + the loop */ + que_node_t* stat_list; /* statement list */ +}; + +/* exit statement node */ +struct exit_node_struct{ + que_common_t common; /* type: QUE_NODE_EXIT */ +}; + +/* return-statement node */ +struct return_node_struct{ + que_common_t common; /* type: QUE_NODE_RETURN */ +}; + +/* Assignment statement node */ +struct assign_node_struct{ + que_common_t common; /* type: QUE_NODE_ASSIGNMENT */ + sym_node_t* var; /* variable to set */ + que_node_t* val; /* value to assign */ +}; + +/* Column assignment node */ +struct col_assign_node_struct{ + que_common_t common; /* type: QUE_NODE_COL_ASSIGN */ + sym_node_t* col; /* column to set */ + que_node_t* val; /* value to assign */ +}; + +/* Classes of functions */ +#define PARS_FUNC_ARITH 1 /* +, -, *, / */ +#define PARS_FUNC_LOGICAL 2 +#define PARS_FUNC_CMP 3 +#define PARS_FUNC_PREDEFINED 4 /* TO_NUMBER, SUBSTR, ... */ +#define PARS_FUNC_AGGREGATE 5 /* COUNT, DISTINCT, SUM */ +#define PARS_FUNC_OTHER 6 /* these are not real functions, + e.g., := */ + +#ifndef UNIV_NONINL +#include "pars0pars.ic" +#endif + +#endif === added file 'storage/xtradb/include/pars0pars.ic' --- a/storage/xtradb/include/pars0pars.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/pars0pars.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,23 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +SQL parser + +Created 11/19/1996 Heikki Tuuri +*******************************************************/ === added file 'storage/xtradb/include/pars0sym.h' --- a/storage/xtradb/include/pars0sym.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/pars0sym.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,239 @@ +/***************************************************************************** + +Copyright (c) 1997, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +SQL parser symbol table + +Created 12/15/1997 Heikki Tuuri +*******************************************************/ + +#ifndef pars0sym_h +#define pars0sym_h + +#include "univ.i" +#include "que0types.h" +#include "usr0types.h" +#include "dict0types.h" +#include "pars0types.h" +#include "row0types.h" + +/********************************************************************** +Creates a symbol table for a single stored procedure or query. */ +UNIV_INTERN +sym_tab_t* +sym_tab_create( +/*===========*/ + /* out, own: symbol table */ + mem_heap_t* heap); /* in: memory heap where to create */ +/********************************************************************** +Frees the memory allocated dynamically AFTER parsing phase for variables +etc. in the symbol table. Does not free the mem heap where the table was +originally created. Frees also SQL explicit cursor definitions. */ +UNIV_INTERN +void +sym_tab_free_private( +/*=================*/ + sym_tab_t* sym_tab); /* in, own: symbol table */ +/********************************************************************** +Adds an integer literal to a symbol table. */ +UNIV_INTERN +sym_node_t* +sym_tab_add_int_lit( +/*================*/ + /* out: symbol table node */ + sym_tab_t* sym_tab, /* in: symbol table */ + ulint val); /* in: integer value */ +/********************************************************************** +Adds an string literal to a symbol table. */ +UNIV_INTERN +sym_node_t* +sym_tab_add_str_lit( +/*================*/ + /* out: symbol table node */ + sym_tab_t* sym_tab, /* in: symbol table */ + byte* str, /* in: string with no quotes around + it */ + ulint len); /* in: string length */ +/********************************************************************** +Add a bound literal to a symbol table. */ +UNIV_INTERN +sym_node_t* +sym_tab_add_bound_lit( +/*==================*/ + /* out: symbol table node */ + sym_tab_t* sym_tab, /* in: symbol table */ + const char* name, /* in: name of bound literal */ + ulint* lit_type); /* out: type of literal (PARS_*_LIT) */ +/********************************************************************** +Adds an SQL null literal to a symbol table. */ +UNIV_INTERN +sym_node_t* +sym_tab_add_null_lit( +/*=================*/ + /* out: symbol table node */ + sym_tab_t* sym_tab); /* in: symbol table */ +/********************************************************************** +Adds an identifier to a symbol table. */ +UNIV_INTERN +sym_node_t* +sym_tab_add_id( +/*===========*/ + /* out: symbol table node */ + sym_tab_t* sym_tab, /* in: symbol table */ + byte* name, /* in: identifier name */ + ulint len); /* in: identifier length */ + +/********************************************************************** +Add a bound identifier to a symbol table. */ +UNIV_INTERN +sym_node_t* +sym_tab_add_bound_id( +/*===========*/ + /* out: symbol table node */ + sym_tab_t* sym_tab, /* in: symbol table */ + const char* name); /* in: name of bound id */ + +#define SYM_CLUST_FIELD_NO 0 +#define SYM_SEC_FIELD_NO 1 + +struct sym_node_struct{ + que_common_t common; /* node type: + QUE_NODE_SYMBOL */ + /* NOTE: if the data field in 'common.val' is not NULL and the symbol + table node is not for a temporary column, the memory for the value has + been allocated from dynamic memory and it should be freed when the + symbol table is discarded */ + + /* 'alias' and 'indirection' are almost the same, but not quite. + 'alias' always points to the primary instance of the variable, while + 'indirection' does the same only if we should use the primary + instance's values for the node's data. This is usually the case, but + when initializing a cursor (e.g., "DECLARE CURSOR c IS SELECT * FROM + t WHERE id = x;"), we copy the values from the primary instance to + the cursor's instance so that they are fixed for the duration of the + cursor, and set 'indirection' to NULL. If we did not, the value of + 'x' could change between fetches and things would break horribly. + + TODO: It would be cleaner to make 'indirection' a boolean field and + always use 'alias' to refer to the primary node. */ + + sym_node_t* indirection; /* pointer to + another symbol table + node which contains + the value for this + node, NULL otherwise */ + sym_node_t* alias; /* pointer to + another symbol table + node for which this + node is an alias, + NULL otherwise */ + UT_LIST_NODE_T(sym_node_t) col_var_list; /* list of table + columns or a list of + input variables for an + explicit cursor */ + ibool copy_val; /* TRUE if a column + and its value should + be copied to dynamic + memory when fetched */ + ulint field_nos[2]; /* if a column, in + the position + SYM_CLUST_FIELD_NO is + the field number in the + clustered index; in + the position + SYM_SEC_FIELD_NO + the field number in the + non-clustered index to + use first; if not found + from the index, then + ULINT_UNDEFINED */ + ibool resolved; /* TRUE if the + meaning of a variable + or a column has been + resolved; for literals + this is always TRUE */ + ulint token_type; /* SYM_VAR, SYM_COLUMN, + SYM_IMPLICIT_VAR, + SYM_LIT, SYM_TABLE, + SYM_CURSOR, ... */ + const char* name; /* name of an id */ + ulint name_len; /* id name length */ + dict_table_t* table; /* table definition + if a table id or a + column id */ + ulint col_no; /* column number if a + column */ + sel_buf_t* prefetch_buf; /* NULL, or a buffer + for cached column + values for prefetched + rows */ + sel_node_t* cursor_def; /* cursor definition + select node if a + named cursor */ + ulint param_type; /* PARS_INPUT, + PARS_OUTPUT, or + PARS_NOT_PARAM if not a + procedure parameter */ + sym_tab_t* sym_table; /* back pointer to + the symbol table */ + UT_LIST_NODE_T(sym_node_t) sym_list; /* list of symbol + nodes */ +}; + +struct sym_tab_struct{ + que_t* query_graph; + /* query graph generated by the + parser */ + const char* sql_string; + /* SQL string to parse */ + size_t string_len; + /* SQL string length */ + int next_char_pos; + /* position of the next character in + sql_string to give to the lexical + analyzer */ + pars_info_t* info; /* extra information, or NULL */ + sym_node_list_t sym_list; + /* list of symbol nodes in the symbol + table */ + UT_LIST_BASE_NODE_T(func_node_t) + func_node_list; + /* list of function nodes in the + parsed query graph */ + mem_heap_t* heap; /* memory heap from which we can + allocate space */ +}; + +/* Types of a symbol table entry */ +#define SYM_VAR 91 /* declared parameter or local + variable of a procedure */ +#define SYM_IMPLICIT_VAR 92 /* storage for a intermediate result + of a calculation */ +#define SYM_LIT 93 /* literal */ +#define SYM_TABLE 94 /* database table name */ +#define SYM_COLUMN 95 /* database table name */ +#define SYM_CURSOR 96 /* named cursor */ +#define SYM_PROCEDURE_NAME 97 /* stored procedure name */ +#define SYM_INDEX 98 /* database index name */ +#define SYM_FUNCTION 99 /* user function name */ + +#ifndef UNIV_NONINL +#include "pars0sym.ic" +#endif + +#endif === added file 'storage/xtradb/include/pars0sym.ic' --- a/storage/xtradb/include/pars0sym.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/pars0sym.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,23 @@ +/***************************************************************************** + +Copyright (c) 1997, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +SQL parser symbol table + +Created 12/15/1997 Heikki Tuuri +*******************************************************/ === added file 'storage/xtradb/include/pars0types.h' --- a/storage/xtradb/include/pars0types.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/pars0types.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,49 @@ +/***************************************************************************** + +Copyright (c) 1998, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +SQL parser global types + +Created 1/11/1998 Heikki Tuuri +*******************************************************/ + +#ifndef pars0types_h +#define pars0types_h + +typedef struct pars_info_struct pars_info_t; +typedef struct pars_user_func_struct pars_user_func_t; +typedef struct pars_bound_lit_struct pars_bound_lit_t; +typedef struct pars_bound_id_struct pars_bound_id_t; +typedef struct sym_node_struct sym_node_t; +typedef struct sym_tab_struct sym_tab_t; +typedef struct pars_res_word_struct pars_res_word_t; +typedef struct func_node_struct func_node_t; +typedef struct order_node_struct order_node_t; +typedef struct proc_node_struct proc_node_t; +typedef struct elsif_node_struct elsif_node_t; +typedef struct if_node_struct if_node_t; +typedef struct while_node_struct while_node_t; +typedef struct for_node_struct for_node_t; +typedef struct exit_node_struct exit_node_t; +typedef struct return_node_struct return_node_t; +typedef struct assign_node_struct assign_node_t; +typedef struct col_assign_node_struct col_assign_node_t; + +typedef UT_LIST_BASE_NODE_T(sym_node_t) sym_node_list_t; + +#endif === added file 'storage/xtradb/include/que0que.h' --- a/storage/xtradb/include/que0que.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/que0que.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,526 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Query graph + +Created 5/27/1996 Heikki Tuuri +*******************************************************/ + +#ifndef que0que_h +#define que0que_h + +#include "univ.i" +#include "data0data.h" +#include "dict0types.h" +#include "trx0trx.h" +#include "srv0srv.h" +#include "usr0types.h" +#include "que0types.h" +#include "row0types.h" +#include "pars0types.h" + +/* If the following flag is set TRUE, the module will print trace info +of SQL execution in the UNIV_SQL_DEBUG version */ +extern ibool que_trace_on; + +/*************************************************************************** +Adds a query graph to the session's list of graphs. */ +UNIV_INTERN +void +que_graph_publish( +/*==============*/ + que_t* graph, /* in: graph */ + sess_t* sess); /* in: session */ +/*************************************************************************** +Creates a query graph fork node. */ +UNIV_INTERN +que_fork_t* +que_fork_create( +/*============*/ + /* out, own: fork node */ + que_t* graph, /* in: graph, if NULL then this + fork node is assumed to be the + graph root */ + que_node_t* parent, /* in: parent node */ + ulint fork_type, /* in: fork type */ + mem_heap_t* heap); /* in: memory heap where created */ +/*************************************************************************** +Gets the first thr in a fork. */ +UNIV_INLINE +que_thr_t* +que_fork_get_first_thr( +/*===================*/ + que_fork_t* fork); /* in: query fork */ +/*************************************************************************** +Gets the child node of the first thr in a fork. */ +UNIV_INLINE +que_node_t* +que_fork_get_child( +/*===============*/ + que_fork_t* fork); /* in: query fork */ +/*************************************************************************** +Sets the parent of a graph node. */ +UNIV_INLINE +void +que_node_set_parent( +/*================*/ + que_node_t* node, /* in: graph node */ + que_node_t* parent);/* in: parent */ +/*************************************************************************** +Creates a query graph thread node. */ +UNIV_INTERN +que_thr_t* +que_thr_create( +/*===========*/ + /* out, own: query thread node */ + que_fork_t* parent, /* in: parent node, i.e., a fork node */ + mem_heap_t* heap); /* in: memory heap where created */ +/************************************************************************** +Checks if the query graph is in a state where it should be freed, and +frees it in that case. If the session is in a state where it should be +closed, also this is done. */ +UNIV_INTERN +ibool +que_graph_try_free( +/*===============*/ + /* out: TRUE if freed */ + que_t* graph); /* in: query graph */ +/************************************************************************** +Frees a query graph, but not the heap where it was created. Does not free +explicit cursor declarations, they are freed in que_graph_free. */ +UNIV_INTERN +void +que_graph_free_recursive( +/*=====================*/ + que_node_t* node); /* in: query graph node */ +/************************************************************************** +Frees a query graph. */ +UNIV_INTERN +void +que_graph_free( +/*===========*/ + que_t* graph); /* in: query graph; we assume that the memory + heap where this graph was created is private + to this graph: if not, then use + que_graph_free_recursive and free the heap + afterwards! */ +/************************************************************************** +Stops a query thread if graph or trx is in a state requiring it. The +conditions are tested in the order (1) graph, (2) trx. The kernel mutex has +to be reserved. */ +UNIV_INTERN +ibool +que_thr_stop( +/*=========*/ + /* out: TRUE if stopped */ + que_thr_t* thr); /* in: query thread */ +/************************************************************************** +Moves a thread from another state to the QUE_THR_RUNNING state. Increments +the n_active_thrs counters of the query graph and transaction. */ +UNIV_INTERN +void +que_thr_move_to_run_state_for_mysql( +/*================================*/ + que_thr_t* thr, /* in: an query thread */ + trx_t* trx); /* in: transaction */ +/************************************************************************** +A patch for MySQL used to 'stop' a dummy query thread used in MySQL +select, when there is no error or lock wait. */ +UNIV_INTERN +void +que_thr_stop_for_mysql_no_error( +/*============================*/ + que_thr_t* thr, /* in: query thread */ + trx_t* trx); /* in: transaction */ +/************************************************************************** +A patch for MySQL used to 'stop' a dummy query thread used in MySQL. The +query thread is stopped and made inactive, except in the case where +it was put to the lock wait state in lock0lock.c, but the lock has already +been granted or the transaction chosen as a victim in deadlock resolution. */ +UNIV_INTERN +void +que_thr_stop_for_mysql( +/*===================*/ + que_thr_t* thr); /* in: query thread */ +/************************************************************************** +Run a query thread. Handles lock waits. */ +UNIV_INTERN +void +que_run_threads( +/*============*/ + que_thr_t* thr); /* in: query thread */ +/************************************************************************** +After signal handling is finished, returns control to a query graph error +handling routine. (Currently, just returns the control to the root of the +graph so that the graph can communicate an error message to the client.) */ +UNIV_INTERN +void +que_fork_error_handle( +/*==================*/ + trx_t* trx, /* in: trx */ + que_t* fork); /* in: query graph which was run before signal + handling started, NULL not allowed */ +/************************************************************************** +Moves a suspended query thread to the QUE_THR_RUNNING state and releases +a single worker thread to execute it. This function should be used to end +the wait state of a query thread waiting for a lock or a stored procedure +completion. */ +UNIV_INTERN +void +que_thr_end_wait( +/*=============*/ + que_thr_t* thr, /* in: query thread in the + QUE_THR_LOCK_WAIT, + or QUE_THR_PROCEDURE_WAIT, or + QUE_THR_SIG_REPLY_WAIT state */ + que_thr_t** next_thr); /* in/out: next query thread to run; + if the value which is passed in is + a pointer to a NULL pointer, then the + calling function can start running + a new query thread */ +/************************************************************************** +Same as que_thr_end_wait, but no parameter next_thr available. */ +UNIV_INTERN +void +que_thr_end_wait_no_next_thr( +/*=========================*/ + que_thr_t* thr); /* in: query thread in the + QUE_THR_LOCK_WAIT, + or QUE_THR_PROCEDURE_WAIT, or + QUE_THR_SIG_REPLY_WAIT state */ +/************************************************************************** +Starts execution of a command in a query fork. Picks a query thread which +is not in the QUE_THR_RUNNING state and moves it to that state. If none +can be chosen, a situation which may arise in parallelized fetches, NULL +is returned. */ +UNIV_INTERN +que_thr_t* +que_fork_start_command( +/*===================*/ + /* out: a query thread of the graph moved to + QUE_THR_RUNNING state, or NULL; the query + thread should be executed by que_run_threads + by the caller */ + que_fork_t* fork); /* in: a query fork */ +/*************************************************************************** +Gets the trx of a query thread. */ +UNIV_INLINE +trx_t* +thr_get_trx( +/*========*/ + que_thr_t* thr); /* in: query thread */ +/*************************************************************************** +Gets the type of a graph node. */ +UNIV_INLINE +ulint +que_node_get_type( +/*==============*/ + que_node_t* node); /* in: graph node */ +/*************************************************************************** +Gets pointer to the value data type field of a graph node. */ +UNIV_INLINE +dtype_t* +que_node_get_data_type( +/*===================*/ + que_node_t* node); /* in: graph node */ +/*************************************************************************** +Gets pointer to the value dfield of a graph node. */ +UNIV_INLINE +dfield_t* +que_node_get_val( +/*=============*/ + que_node_t* node); /* in: graph node */ +/*************************************************************************** +Gets the value buffer size of a graph node. */ +UNIV_INLINE +ulint +que_node_get_val_buf_size( +/*======================*/ + /* out: val buffer size, not defined if + val.data == NULL in node */ + que_node_t* node); /* in: graph node */ +/*************************************************************************** +Sets the value buffer size of a graph node. */ +UNIV_INLINE +void +que_node_set_val_buf_size( +/*======================*/ + que_node_t* node, /* in: graph node */ + ulint size); /* in: size */ +/************************************************************************* +Gets the next list node in a list of query graph nodes. */ +UNIV_INLINE +que_node_t* +que_node_get_next( +/*==============*/ + que_node_t* node); /* in: node in a list */ +/************************************************************************* +Gets the parent node of a query graph node. */ +UNIV_INLINE +que_node_t* +que_node_get_parent( +/*================*/ + /* out: parent node or NULL */ + que_node_t* node); /* in: node */ +/******************************************************************** +Get the first containing loop node (e.g. while_node_t or for_node_t) for the +given node, or NULL if the node is not within a loop. */ +UNIV_INTERN +que_node_t* +que_node_get_containing_loop_node( +/*==============================*/ + /* out: containing loop node, or NULL. */ + que_node_t* node); /* in: node */ +/************************************************************************* +Catenates a query graph node to a list of them, possible empty list. */ +UNIV_INLINE +que_node_t* +que_node_list_add_last( +/*===================*/ + /* out: one-way list of nodes */ + que_node_t* node_list, /* in: node list, or NULL */ + que_node_t* node); /* in: node */ +/************************************************************************* +Gets a query graph node list length. */ +UNIV_INLINE +ulint +que_node_list_get_len( +/*==================*/ + /* out: length, for NULL list 0 */ + que_node_t* node_list); /* in: node list, or NULL */ +/************************************************************************** +Checks if graph, trx, or session is in a state where the query thread should +be stopped. */ +UNIV_INLINE +ibool +que_thr_peek_stop( +/*==============*/ + /* out: TRUE if should be stopped; NOTE that + if the peek is made without reserving the + kernel mutex, then another peek with the + mutex reserved is necessary before deciding + the actual stopping */ + que_thr_t* thr); /* in: query thread */ +/*************************************************************************** +Returns TRUE if the query graph is for a SELECT statement. */ +UNIV_INLINE +ibool +que_graph_is_select( +/*================*/ + /* out: TRUE if a select */ + que_t* graph); /* in: graph */ +/************************************************************************** +Prints info of an SQL query graph node. */ +UNIV_INTERN +void +que_node_print_info( +/*================*/ + que_node_t* node); /* in: query graph node */ +/************************************************************************* +Evaluate the given SQL */ +UNIV_INTERN +ulint +que_eval_sql( +/*=========*/ + /* out: error code or DB_SUCCESS */ + pars_info_t* info, /* in: info struct, or NULL */ + const char* sql, /* in: SQL string */ + ibool reserve_dict_mutex, + /* in: if TRUE, acquire/release + dict_sys->mutex around call to pars_sql. */ + trx_t* trx); /* in: trx */ + +/* Query graph query thread node: the fields are protected by the kernel +mutex with the exceptions named below */ + +struct que_thr_struct{ + que_common_t common; /* type: QUE_NODE_THR */ + ulint magic_n; /* magic number to catch memory + corruption */ + que_node_t* child; /* graph child node */ + que_t* graph; /* graph where this node belongs */ + ibool is_active; /* TRUE if the thread has been set + to the run state in + que_thr_move_to_run_state, but not + deactivated in + que_thr_dec_reference_count */ + ulint state; /* state of the query thread */ + UT_LIST_NODE_T(que_thr_t) + thrs; /* list of thread nodes of the fork + node */ + UT_LIST_NODE_T(que_thr_t) + trx_thrs; /* lists of threads in wait list of + the trx */ + UT_LIST_NODE_T(que_thr_t) + queue; /* list of runnable thread nodes in + the server task queue */ + /*------------------------------*/ + /* The following fields are private to the OS thread executing the + query thread, and are not protected by the kernel mutex: */ + + que_node_t* run_node; /* pointer to the node where the + subgraph down from this node is + currently executed */ + que_node_t* prev_node; /* pointer to the node from which + the control came */ + ulint resource; /* resource usage of the query thread + thus far */ + ulint lock_state; /* lock state of thread (table or + row) */ +}; + +#define QUE_THR_MAGIC_N 8476583 +#define QUE_THR_MAGIC_FREED 123461526 + +/* Query graph fork node: its fields are protected by the kernel mutex */ +struct que_fork_struct{ + que_common_t common; /* type: QUE_NODE_FORK */ + que_t* graph; /* query graph of this node */ + ulint fork_type; /* fork type */ + ulint n_active_thrs; /* if this is the root of a graph, the + number query threads that have been + started in que_thr_move_to_run_state + but for which que_thr_dec_refer_count + has not yet been called */ + trx_t* trx; /* transaction: this is set only in + the root node */ + ulint state; /* state of the fork node */ + que_thr_t* caller; /* pointer to a possible calling query + thread */ + UT_LIST_BASE_NODE_T(que_thr_t) + thrs; /* list of query threads */ + /*------------------------------*/ + /* The fields in this section are defined only in the root node */ + sym_tab_t* sym_tab; /* symbol table of the query, + generated by the parser, or NULL + if the graph was created 'by hand' */ + pars_info_t* info; /* in: info struct, or NULL */ + /* The following cur_... fields are relevant only in a select graph */ + + ulint cur_end; /* QUE_CUR_NOT_DEFINED, QUE_CUR_START, + QUE_CUR_END */ + ulint cur_pos; /* if there are n rows in the result + set, values 0 and n + 1 mean before + first row, or after last row, depending + on cur_end; values 1...n mean a row + index */ + ibool cur_on_row; /* TRUE if cursor is on a row, i.e., + it is not before the first row or + after the last row */ + dulint n_inserts; /* number of rows inserted */ + dulint n_updates; /* number of rows updated */ + dulint n_deletes; /* number of rows deleted */ + sel_node_t* last_sel_node; /* last executed select node, or NULL + if none */ + UT_LIST_NODE_T(que_fork_t) + graphs; /* list of query graphs of a session + or a stored procedure */ + /*------------------------------*/ + mem_heap_t* heap; /* memory heap where the fork was + created */ + +}; + +/* Query fork (or graph) types */ +#define QUE_FORK_SELECT_NON_SCROLL 1 /* forward-only cursor */ +#define QUE_FORK_SELECT_SCROLL 2 /* scrollable cursor */ +#define QUE_FORK_INSERT 3 +#define QUE_FORK_UPDATE 4 +#define QUE_FORK_ROLLBACK 5 + /* This is really the undo graph used in rollback, + no signal-sending roll_node in this graph */ +#define QUE_FORK_PURGE 6 +#define QUE_FORK_EXECUTE 7 +#define QUE_FORK_PROCEDURE 8 +#define QUE_FORK_PROCEDURE_CALL 9 +#define QUE_FORK_MYSQL_INTERFACE 10 +#define QUE_FORK_RECOVERY 11 + +/* Query fork (or graph) states */ +#define QUE_FORK_ACTIVE 1 +#define QUE_FORK_COMMAND_WAIT 2 +#define QUE_FORK_INVALID 3 +#define QUE_FORK_BEING_FREED 4 + +/* Flag which is ORed to control structure statement node types */ +#define QUE_NODE_CONTROL_STAT 1024 + +/* Query graph node types */ +#define QUE_NODE_LOCK 1 +#define QUE_NODE_INSERT 2 +#define QUE_NODE_UPDATE 4 +#define QUE_NODE_CURSOR 5 +#define QUE_NODE_SELECT 6 +#define QUE_NODE_AGGREGATE 7 +#define QUE_NODE_FORK 8 +#define QUE_NODE_THR 9 +#define QUE_NODE_UNDO 10 +#define QUE_NODE_COMMIT 11 +#define QUE_NODE_ROLLBACK 12 +#define QUE_NODE_PURGE 13 +#define QUE_NODE_CREATE_TABLE 14 +#define QUE_NODE_CREATE_INDEX 15 +#define QUE_NODE_SYMBOL 16 +#define QUE_NODE_RES_WORD 17 +#define QUE_NODE_FUNC 18 +#define QUE_NODE_ORDER 19 +#define QUE_NODE_PROC (20 + QUE_NODE_CONTROL_STAT) +#define QUE_NODE_IF (21 + QUE_NODE_CONTROL_STAT) +#define QUE_NODE_WHILE (22 + QUE_NODE_CONTROL_STAT) +#define QUE_NODE_ASSIGNMENT 23 +#define QUE_NODE_FETCH 24 +#define QUE_NODE_OPEN 25 +#define QUE_NODE_COL_ASSIGNMENT 26 +#define QUE_NODE_FOR (27 + QUE_NODE_CONTROL_STAT) +#define QUE_NODE_RETURN 28 +#define QUE_NODE_ROW_PRINTF 29 +#define QUE_NODE_ELSIF 30 +#define QUE_NODE_CALL 31 +#define QUE_NODE_EXIT 32 + +/* Query thread states */ +#define QUE_THR_RUNNING 1 +#define QUE_THR_PROCEDURE_WAIT 2 +#define QUE_THR_COMPLETED 3 /* in selects this means that the + thread is at the end of its result set + (or start, in case of a scroll cursor); + in other statements, this means the + thread has done its task */ +#define QUE_THR_COMMAND_WAIT 4 +#define QUE_THR_LOCK_WAIT 5 +#define QUE_THR_SIG_REPLY_WAIT 6 +#define QUE_THR_SUSPENDED 7 +#define QUE_THR_ERROR 8 + +/* Query thread lock states */ +#define QUE_THR_LOCK_NOLOCK 0 +#define QUE_THR_LOCK_ROW 1 +#define QUE_THR_LOCK_TABLE 2 + +/* From where the cursor position is counted */ +#define QUE_CUR_NOT_DEFINED 1 +#define QUE_CUR_START 2 +#define QUE_CUR_END 3 + + +#ifndef UNIV_NONINL +#include "que0que.ic" +#endif + +#endif === added file 'storage/xtradb/include/que0que.ic' --- a/storage/xtradb/include/que0que.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/que0que.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,275 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Query graph + +Created 5/27/1996 Heikki Tuuri +*******************************************************/ + +#include "usr0sess.h" + +/*************************************************************************** +Gets the trx of a query thread. */ +UNIV_INLINE +trx_t* +thr_get_trx( +/*========*/ + que_thr_t* thr) /* in: query thread */ +{ + ut_ad(thr); + + return(thr->graph->trx); +} + +/*************************************************************************** +Gets the first thr in a fork. */ +UNIV_INLINE +que_thr_t* +que_fork_get_first_thr( +/*===================*/ + que_fork_t* fork) /* in: query fork */ +{ + return(UT_LIST_GET_FIRST(fork->thrs)); +} + +/*************************************************************************** +Gets the child node of the first thr in a fork. */ +UNIV_INLINE +que_node_t* +que_fork_get_child( +/*===============*/ + que_fork_t* fork) /* in: query fork */ +{ + que_thr_t* thr; + + thr = UT_LIST_GET_FIRST(fork->thrs); + + return(thr->child); +} + +/*************************************************************************** +Gets the type of a graph node. */ +UNIV_INLINE +ulint +que_node_get_type( +/*==============*/ + que_node_t* node) /* in: graph node */ +{ + ut_ad(node); + + return(((que_common_t*)node)->type); +} + +/*************************************************************************** +Gets pointer to the value dfield of a graph node. */ +UNIV_INLINE +dfield_t* +que_node_get_val( +/*=============*/ + que_node_t* node) /* in: graph node */ +{ + ut_ad(node); + + return(&(((que_common_t*)node)->val)); +} + +/*************************************************************************** +Gets the value buffer size of a graph node. */ +UNIV_INLINE +ulint +que_node_get_val_buf_size( +/*======================*/ + /* out: val buffer size, not defined if + val.data == NULL in node */ + que_node_t* node) /* in: graph node */ +{ + ut_ad(node); + + return(((que_common_t*)node)->val_buf_size); +} + +/*************************************************************************** +Sets the value buffer size of a graph node. */ +UNIV_INLINE +void +que_node_set_val_buf_size( +/*======================*/ + que_node_t* node, /* in: graph node */ + ulint size) /* in: size */ +{ + ut_ad(node); + + ((que_common_t*)node)->val_buf_size = size; +} + +/*************************************************************************** +Sets the parent of a graph node. */ +UNIV_INLINE +void +que_node_set_parent( +/*================*/ + que_node_t* node, /* in: graph node */ + que_node_t* parent) /* in: parent */ +{ + ut_ad(node); + + ((que_common_t*)node)->parent = parent; +} + +/*************************************************************************** +Gets pointer to the value data type field of a graph node. */ +UNIV_INLINE +dtype_t* +que_node_get_data_type( +/*===================*/ + que_node_t* node) /* in: graph node */ +{ + ut_ad(node); + + return(dfield_get_type(&((que_common_t*) node)->val)); +} + +/************************************************************************* +Catenates a query graph node to a list of them, possible empty list. */ +UNIV_INLINE +que_node_t* +que_node_list_add_last( +/*===================*/ + /* out: one-way list of nodes */ + que_node_t* node_list, /* in: node list, or NULL */ + que_node_t* node) /* in: node */ +{ + que_common_t* cnode; + que_common_t* cnode2; + + cnode = (que_common_t*) node; + + cnode->brother = NULL; + + if (node_list == NULL) { + + return(node); + } + + cnode2 = (que_common_t*) node_list; + + while (cnode2->brother != NULL) { + cnode2 = (que_common_t*) cnode2->brother; + } + + cnode2->brother = node; + + return(node_list); +} + +/************************************************************************* +Gets the next list node in a list of query graph nodes. */ +UNIV_INLINE +que_node_t* +que_node_get_next( +/*==============*/ + /* out: next node in a list of nodes */ + que_node_t* node) /* in: node in a list */ +{ + return(((que_common_t*)node)->brother); +} + +/************************************************************************* +Gets a query graph node list length. */ +UNIV_INLINE +ulint +que_node_list_get_len( +/*==================*/ + /* out: length, for NULL list 0 */ + que_node_t* node_list) /* in: node list, or NULL */ +{ + const que_common_t* cnode; + ulint len; + + cnode = (const que_common_t*) node_list; + len = 0; + + while (cnode != NULL) { + len++; + cnode = (const que_common_t*) cnode->brother; + } + + return(len); +} + +/************************************************************************* +Gets the parent node of a query graph node. */ +UNIV_INLINE +que_node_t* +que_node_get_parent( +/*================*/ + /* out: parent node or NULL */ + que_node_t* node) /* in: node */ +{ + return(((que_common_t*)node)->parent); +} + +/************************************************************************** +Checks if graph, trx, or session is in a state where the query thread should +be stopped. */ +UNIV_INLINE +ibool +que_thr_peek_stop( +/*==============*/ + /* out: TRUE if should be stopped; NOTE that + if the peek is made without reserving the + kernel mutex, then another peek with the + mutex reserved is necessary before deciding + the actual stopping */ + que_thr_t* thr) /* in: query thread */ +{ + trx_t* trx; + que_t* graph; + + graph = thr->graph; + trx = graph->trx; + + if (graph->state != QUE_FORK_ACTIVE + || trx->que_state == TRX_QUE_LOCK_WAIT + || (UT_LIST_GET_LEN(trx->signals) > 0 + && trx->que_state == TRX_QUE_RUNNING)) { + + return(TRUE); + } + + return(FALSE); +} + +/*************************************************************************** +Returns TRUE if the query graph is for a SELECT statement. */ +UNIV_INLINE +ibool +que_graph_is_select( +/*================*/ + /* out: TRUE if a select */ + que_t* graph) /* in: graph */ +{ + if (graph->fork_type == QUE_FORK_SELECT_SCROLL + || graph->fork_type == QUE_FORK_SELECT_NON_SCROLL) { + + return(TRUE); + } + + return(FALSE); +} === added file 'storage/xtradb/include/que0types.h' --- a/storage/xtradb/include/que0types.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/que0types.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,59 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Query graph global types + +Created 5/27/1996 Heikki Tuuri +*******************************************************/ + +#ifndef que0types_h +#define que0types_h + +#include "data0data.h" +#include "dict0types.h" + +/* Pseudotype for all graph nodes */ +typedef void que_node_t; + +typedef struct que_fork_struct que_fork_t; + +/* Query graph root is a fork node */ +typedef que_fork_t que_t; + +typedef struct que_thr_struct que_thr_t; +typedef struct que_common_struct que_common_t; + +/* Common struct at the beginning of each query graph node; the name of this +substruct must be 'common' */ + +struct que_common_struct{ + ulint type; /* query node type */ + que_node_t* parent; /* back pointer to parent node, or NULL */ + que_node_t* brother;/* pointer to a possible brother node */ + dfield_t val; /* evaluated value for an expression */ + ulint val_buf_size; + /* buffer size for the evaluated value data, + if the buffer has been allocated dynamically: + if this field is != 0, and the node is a + symbol node or a function node, then we + have to free the data field in val + explicitly */ +}; + +#endif === added file 'storage/xtradb/include/read0read.h' --- a/storage/xtradb/include/read0read.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/read0read.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,181 @@ +/***************************************************************************** + +Copyright (c) 1997, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Cursor read + +Created 2/16/1997 Heikki Tuuri +*******************************************************/ + +#ifndef read0read_h +#define read0read_h + +#include "univ.i" + + +#include "ut0byte.h" +#include "ut0lst.h" +#include "trx0trx.h" +#include "read0types.h" + +/************************************************************************* +Opens a read view where exactly the transactions serialized before this +point in time are seen in the view. */ +UNIV_INTERN +read_view_t* +read_view_open_now( +/*===============*/ + /* out, own: read view struct */ + dulint cr_trx_id, /* in: trx_id of creating + transaction, or (0, 0) used in + purge */ + mem_heap_t* heap); /* in: memory heap from which + allocated */ +/************************************************************************* +Makes a copy of the oldest existing read view, or opens a new. The view +must be closed with ..._close. */ +UNIV_INTERN +read_view_t* +read_view_oldest_copy_or_open_new( +/*==============================*/ + /* out, own: read view struct */ + dulint cr_trx_id, /* in: trx_id of creating + transaction, or (0, 0) used in + purge */ + mem_heap_t* heap); /* in: memory heap from which + allocated */ +/************************************************************************* +Closes a read view. */ +UNIV_INTERN +void +read_view_close( +/*============*/ + read_view_t* view); /* in: read view */ +/************************************************************************* +Closes a consistent read view for MySQL. This function is called at an SQL +statement end if the trx isolation level is <= TRX_ISO_READ_COMMITTED. */ +UNIV_INTERN +void +read_view_close_for_mysql( +/*======================*/ + trx_t* trx); /* in: trx which has a read view */ +/************************************************************************* +Checks if a read view sees the specified transaction. */ +UNIV_INLINE +ibool +read_view_sees_trx_id( +/*==================*/ + /* out: TRUE if sees */ + read_view_t* view, /* in: read view */ + dulint trx_id);/* in: trx id */ +/************************************************************************* +Prints a read view to stderr. */ +UNIV_INTERN +void +read_view_print( +/*============*/ + read_view_t* view); /* in: read view */ +/************************************************************************* +Create a consistent cursor view for mysql to be used in cursors. In this +consistent read view modifications done by the creating transaction or future +transactions are not visible. */ +UNIV_INTERN +cursor_view_t* +read_cursor_view_create_for_mysql( +/*==============================*/ + trx_t* cr_trx);/* in: trx where cursor view is created */ +/************************************************************************* +Close a given consistent cursor view for mysql and restore global read view +back to a transaction read view. */ +UNIV_INTERN +void +read_cursor_view_close_for_mysql( +/*=============================*/ + trx_t* trx, /* in: trx */ + cursor_view_t* curview); /* in: cursor view to be closed */ +/************************************************************************* +This function sets a given consistent cursor view to a transaction +read view if given consistent cursor view is not NULL. Otherwise, function +restores a global read view to a transaction read view. */ +UNIV_INTERN +void +read_cursor_set_for_mysql( +/*======================*/ + trx_t* trx, /* in: transaction where cursor is set */ + cursor_view_t* curview);/* in: consistent cursor view to be set */ + +/* Read view lists the trx ids of those transactions for which a consistent +read should not see the modifications to the database. */ + +struct read_view_struct{ + ulint type; /* VIEW_NORMAL, VIEW_HIGH_GRANULARITY */ + dulint undo_no; /* (0, 0) or if type is VIEW_HIGH_GRANULARITY + transaction undo_no when this high-granularity + consistent read view was created */ + dulint low_limit_no; /* The view does not need to see the undo + logs for transactions whose transaction number + is strictly smaller (<) than this value: they + can be removed in purge if not needed by other + views */ + dulint low_limit_id; /* The read should not see any transaction + with trx id >= this value */ + dulint up_limit_id; /* The read should see all trx ids which + are strictly smaller (<) than this value */ + ulint n_trx_ids; /* Number of cells in the trx_ids array */ + dulint* trx_ids; /* Additional trx ids which the read should + not see: typically, these are the active + transactions at the time when the read is + serialized, except the reading transaction + itself; the trx ids in this array are in a + descending order */ + dulint creator_trx_id; /* trx id of creating transaction, or + (0, 0) used in purge */ + UT_LIST_NODE_T(read_view_t) view_list; + /* List of read views in trx_sys */ +}; + +/* Read view types */ +#define VIEW_NORMAL 1 /* Normal consistent read view + where transaction does not see changes + made by active transactions except + creating transaction. */ +#define VIEW_HIGH_GRANULARITY 2 /* High-granularity read view where + transaction does not see changes + made by active transactions and own + changes after a point in time when this + read view was created. */ + +/* Implement InnoDB framework to support consistent read views in +cursors. This struct holds both heap where consistent read view +is allocated and pointer to a read view. */ + +struct cursor_view_struct{ + mem_heap_t* heap; + /* Memory heap for the cursor view */ + read_view_t* read_view; + /* Consistent read view of the cursor*/ + ulint n_mysql_tables_in_use; + /* number of Innobase tables used in the + processing of this cursor */ +}; + +#ifndef UNIV_NONINL +#include "read0read.ic" +#endif + +#endif === added file 'storage/xtradb/include/read0read.ic' --- a/storage/xtradb/include/read0read.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/read0read.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,97 @@ +/***************************************************************************** + +Copyright (c) 1997, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Cursor read + +Created 2/16/1997 Heikki Tuuri +*******************************************************/ + +/************************************************************************* +Gets the nth trx id in a read view. */ +UNIV_INLINE +dulint +read_view_get_nth_trx_id( +/*=====================*/ + /* out: trx id */ + read_view_t* view, /* in: read view */ + ulint n) /* in: position */ +{ + ut_ad(n < view->n_trx_ids); + + return(*(view->trx_ids + n)); +} + +/************************************************************************* +Sets the nth trx id in a read view. */ +UNIV_INLINE +void +read_view_set_nth_trx_id( +/*=====================*/ + read_view_t* view, /* in: read view */ + ulint n, /* in: position */ + dulint trx_id) /* in: trx id to set */ +{ + ut_ad(n < view->n_trx_ids); + + *(view->trx_ids + n) = trx_id; +} + +/************************************************************************* +Checks if a read view sees the specified transaction. */ +UNIV_INLINE +ibool +read_view_sees_trx_id( +/*==================*/ + /* out: TRUE if sees */ + read_view_t* view, /* in: read view */ + dulint trx_id) /* in: trx id */ +{ + ulint n_ids; + int cmp; + ulint i; + + if (ut_dulint_cmp(trx_id, view->up_limit_id) < 0) { + + return(TRUE); + } + + if (ut_dulint_cmp(trx_id, view->low_limit_id) >= 0) { + + return(FALSE); + } + + /* We go through the trx ids in the array smallest first: this order + may save CPU time, because if there was a very long running + transaction in the trx id array, its trx id is looked at first, and + the first two comparisons may well decide the visibility of trx_id. */ + + n_ids = view->n_trx_ids; + + for (i = 0; i < n_ids; i++) { + + cmp = ut_dulint_cmp( + trx_id, + read_view_get_nth_trx_id(view, n_ids - i - 1)); + if (cmp <= 0) { + return(cmp < 0); + } + } + + return(TRUE); +} === added file 'storage/xtradb/include/read0types.h' --- a/storage/xtradb/include/read0types.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/read0types.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,31 @@ +/***************************************************************************** + +Copyright (c) 1997, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Cursor read + +Created 2/16/1997 Heikki Tuuri +*******************************************************/ + +#ifndef read0types_h +#define read0types_h + +typedef struct read_view_struct read_view_t; +typedef struct cursor_view_struct cursor_view_t; + +#endif === added file 'storage/xtradb/include/rem0cmp.h' --- a/storage/xtradb/include/rem0cmp.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/rem0cmp.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,205 @@ +/***************************************************************************** + +Copyright (c) 1994, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/*********************************************************************** +Comparison services for records + +Created 7/1/1994 Heikki Tuuri +************************************************************************/ + +#ifndef rem0cmp_h +#define rem0cmp_h + +#include "univ.i" +#include "data0data.h" +#include "data0type.h" +#include "dict0dict.h" +#include "rem0rec.h" + +/***************************************************************** +Returns TRUE if two columns are equal for comparison purposes. */ +UNIV_INTERN +ibool +cmp_cols_are_equal( +/*===============*/ + /* out: TRUE if the columns are + considered equal in comparisons */ + const dict_col_t* col1, /* in: column 1 */ + const dict_col_t* col2, /* in: column 2 */ + ibool check_charsets); + /* in: whether to check charsets */ +/***************************************************************** +This function is used to compare two data fields for which we know the +data type. */ +UNIV_INLINE +int +cmp_data_data( +/*==========*/ + /* out: 1, 0, -1, if data1 is greater, equal, + less than data2, respectively */ + ulint mtype, /* in: main type */ + ulint prtype, /* in: precise type */ + const byte* data1, /* in: data field (== a pointer to a memory + buffer) */ + ulint len1, /* in: data field length or UNIV_SQL_NULL */ + const byte* data2, /* in: data field (== a pointer to a memory + buffer) */ + ulint len2); /* in: data field length or UNIV_SQL_NULL */ +/***************************************************************** +This function is used to compare two data fields for which we know the +data type. */ +UNIV_INTERN +int +cmp_data_data_slow( +/*===============*/ + /* out: 1, 0, -1, if data1 is greater, equal, + less than data2, respectively */ + ulint mtype, /* in: main type */ + ulint prtype, /* in: precise type */ + const byte* data1, /* in: data field (== a pointer to a memory + buffer) */ + ulint len1, /* in: data field length or UNIV_SQL_NULL */ + const byte* data2, /* in: data field (== a pointer to a memory + buffer) */ + ulint len2); /* in: data field length or UNIV_SQL_NULL */ +/***************************************************************** +This function is used to compare two dfields where at least the first +has its data type field set. */ +UNIV_INLINE +int +cmp_dfield_dfield( +/*==============*/ + /* out: 1, 0, -1, if dfield1 is greater, equal, + less than dfield2, respectively */ + const dfield_t* dfield1,/* in: data field; must have type field set */ + const dfield_t* dfield2);/* in: data field */ +/***************************************************************** +This function is used to compare a data tuple to a physical record. +Only dtuple->n_fields_cmp first fields are taken into account for +the the data tuple! If we denote by n = n_fields_cmp, then rec must +have either m >= n fields, or it must differ from dtuple in some of +the m fields rec has. If rec has an externally stored field we do not +compare it but return with value 0 if such a comparison should be +made. */ +UNIV_INTERN +int +cmp_dtuple_rec_with_match( +/*======================*/ + /* out: 1, 0, -1, if dtuple is greater, equal, + less than rec, respectively, when only the + common first fields are compared, or + until the first externally stored field in + rec */ + const dtuple_t* dtuple, /* in: data tuple */ + const rec_t* rec, /* in: physical record which differs from + dtuple in some of the common fields, or which + has an equal number or more fields than + dtuple */ + const ulint* offsets,/* in: array returned by rec_get_offsets() */ + ulint* matched_fields, /* in/out: number of already completely + matched fields; when function returns, + contains the value for current comparison */ + ulint* matched_bytes); /* in/out: number of already matched + bytes within the first field not completely + matched; when function returns, contains the + value for current comparison */ +/****************************************************************** +Compares a data tuple to a physical record. */ +UNIV_INTERN +int +cmp_dtuple_rec( +/*===========*/ + /* out: 1, 0, -1, if dtuple is greater, equal, + less than rec, respectively; see the comments + for cmp_dtuple_rec_with_match */ + const dtuple_t* dtuple, /* in: data tuple */ + const rec_t* rec, /* in: physical record */ + const ulint* offsets);/* in: array returned by rec_get_offsets() */ +/****************************************************************** +Checks if a dtuple is a prefix of a record. The last field in dtuple +is allowed to be a prefix of the corresponding field in the record. */ +UNIV_INTERN +ibool +cmp_dtuple_is_prefix_of_rec( +/*========================*/ + /* out: TRUE if prefix */ + const dtuple_t* dtuple, /* in: data tuple */ + const rec_t* rec, /* in: physical record */ + const ulint* offsets);/* in: array returned by rec_get_offsets() */ +#ifndef UNIV_HOTBACKUP +/***************************************************************** +Compare two physical records that contain the same number of columns, +none of which are stored externally. */ +UNIV_INTERN +int +cmp_rec_rec_simple( +/*===============*/ + /* out: 1, 0 , -1 if rec1 is greater, + equal, less, respectively, than rec2 */ + const rec_t* rec1, /* in: physical record */ + const rec_t* rec2, /* in: physical record */ + const ulint* offsets1,/* in: rec_get_offsets(rec1, index) */ + const ulint* offsets2,/* in: rec_get_offsets(rec2, index) */ + const dict_index_t* index); /* in: data dictionary index */ +#endif /* !UNIV_HOTBACKUP */ +/***************************************************************** +This function is used to compare two physical records. Only the common +first fields are compared, and if an externally stored field is +encountered, then 0 is returned. */ +UNIV_INTERN +int +cmp_rec_rec_with_match( +/*===================*/ + /* out: 1, 0 , -1 if rec1 is greater, equal, + less, respectively, than rec2; only the common + first fields are compared */ + const rec_t* rec1, /* in: physical record */ + const rec_t* rec2, /* in: physical record */ + const ulint* offsets1,/* in: rec_get_offsets(rec1, index) */ + const ulint* offsets2,/* in: rec_get_offsets(rec2, index) */ + dict_index_t* index, /* in: data dictionary index */ + ulint* matched_fields, /* in/out: number of already completely + matched fields; when the function returns, + contains the value the for current + comparison */ + ulint* matched_bytes);/* in/out: number of already matched + bytes within the first field not completely + matched; when the function returns, contains + the value for the current comparison */ +/***************************************************************** +This function is used to compare two physical records. Only the common +first fields are compared. */ +UNIV_INLINE +int +cmp_rec_rec( +/*========*/ + /* out: 1, 0 , -1 if rec1 is greater, equal, + less, respectively, than rec2; only the common + first fields are compared */ + const rec_t* rec1, /* in: physical record */ + const rec_t* rec2, /* in: physical record */ + const ulint* offsets1,/* in: rec_get_offsets(rec1, index) */ + const ulint* offsets2,/* in: rec_get_offsets(rec2, index) */ + dict_index_t* index); /* in: data dictionary index */ + + +#ifndef UNIV_NONINL +#include "rem0cmp.ic" +#endif + +#endif === added file 'storage/xtradb/include/rem0cmp.ic' --- a/storage/xtradb/include/rem0cmp.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/rem0cmp.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,92 @@ +/***************************************************************************** + +Copyright (c) 1994, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/*********************************************************************** +Comparison services for records + +Created 7/1/1994 Heikki Tuuri +************************************************************************/ + +/***************************************************************** +This function is used to compare two data fields for which we know the +data type. */ +UNIV_INLINE +int +cmp_data_data( +/*==========*/ + /* out: 1, 0, -1, if data1 is greater, equal, + less than data2, respectively */ + ulint mtype, /* in: main type */ + ulint prtype, /* in: precise type */ + const byte* data1, /* in: data field (== a pointer to a memory + buffer) */ + ulint len1, /* in: data field length or UNIV_SQL_NULL */ + const byte* data2, /* in: data field (== a pointer to a memory + buffer) */ + ulint len2) /* in: data field length or UNIV_SQL_NULL */ +{ + return(cmp_data_data_slow(mtype, prtype, data1, len1, data2, len2)); +} + +/***************************************************************** +This function is used to compare two dfields where at least the first +has its data type field set. */ +UNIV_INLINE +int +cmp_dfield_dfield( +/*==============*/ + /* out: 1, 0, -1, if dfield1 is greater, equal, + less than dfield2, respectively */ + const dfield_t* dfield1,/* in: data field; must have type field set */ + const dfield_t* dfield2)/* in: data field */ +{ + const dtype_t* type; + + ut_ad(dfield_check_typed(dfield1)); + + type = dfield_get_type(dfield1); + + return(cmp_data_data(type->mtype, type->prtype, + (const byte*) dfield_get_data(dfield1), + dfield_get_len(dfield1), + (const byte*) dfield_get_data(dfield2), + dfield_get_len(dfield2))); +} + +/***************************************************************** +This function is used to compare two physical records. Only the common +first fields are compared. */ +UNIV_INLINE +int +cmp_rec_rec( +/*========*/ + /* out: 1, 0 , -1 if rec1 is greater, equal, + less, respectively, than rec2; only the common + first fields are compared */ + const rec_t* rec1, /* in: physical record */ + const rec_t* rec2, /* in: physical record */ + const ulint* offsets1,/* in: rec_get_offsets(rec1, index) */ + const ulint* offsets2,/* in: rec_get_offsets(rec2, index) */ + dict_index_t* index) /* in: data dictionary index */ +{ + ulint match_f = 0; + ulint match_b = 0; + + return(cmp_rec_rec_with_match(rec1, rec2, offsets1, offsets2, index, + &match_f, &match_b)); +} === added file 'storage/xtradb/include/rem0rec.h' --- a/storage/xtradb/include/rem0rec.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/rem0rec.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,822 @@ +/***************************************************************************** + +Copyright (c) 1994, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/************************************************************************ +Record manager + +Created 5/30/1994 Heikki Tuuri +*************************************************************************/ + +#ifndef rem0rec_h +#define rem0rec_h + +#include "univ.i" +#include "data0data.h" +#include "rem0types.h" +#include "mtr0types.h" +#include "page0types.h" + +/* Info bit denoting the predefined minimum record: this bit is set +if and only if the record is the first user record on a non-leaf +B-tree page that is the leftmost page on its level +(PAGE_LEVEL is nonzero and FIL_PAGE_PREV is FIL_NULL). */ +#define REC_INFO_MIN_REC_FLAG 0x10UL +/* The deleted flag in info bits */ +#define REC_INFO_DELETED_FLAG 0x20UL /* when bit is set to 1, it means the + record has been delete marked */ + +/* Number of extra bytes in an old-style record, +in addition to the data and the offsets */ +#define REC_N_OLD_EXTRA_BYTES 6 +/* Number of extra bytes in a new-style record, +in addition to the data and the offsets */ +#define REC_N_NEW_EXTRA_BYTES 5 + +/* Record status values */ +#define REC_STATUS_ORDINARY 0 +#define REC_STATUS_NODE_PTR 1 +#define REC_STATUS_INFIMUM 2 +#define REC_STATUS_SUPREMUM 3 + +/* The following four constants are needed in page0zip.c in order to +efficiently compress and decompress pages. */ + +/* The offset of heap_no in a compact record */ +#define REC_NEW_HEAP_NO 4 +/* The shift of heap_no in a compact record. +The status is stored in the low-order bits. */ +#define REC_HEAP_NO_SHIFT 3 + +/* Length of a B-tree node pointer, in bytes */ +#define REC_NODE_PTR_SIZE 4 + +#ifdef UNIV_DEBUG +/* Length of the rec_get_offsets() header */ +# define REC_OFFS_HEADER_SIZE 4 +#else /* UNIV_DEBUG */ +/* Length of the rec_get_offsets() header */ +# define REC_OFFS_HEADER_SIZE 2 +#endif /* UNIV_DEBUG */ + +/* Number of elements that should be initially allocated for the +offsets[] array, first passed to rec_get_offsets() */ +#define REC_OFFS_NORMAL_SIZE 100 +#define REC_OFFS_SMALL_SIZE 10 + +/********************************************************** +The following function is used to get the pointer of the next chained record +on the same page. */ +UNIV_INLINE +const rec_t* +rec_get_next_ptr_const( +/*===================*/ + /* out: pointer to the next chained record, or + NULL if none */ + const rec_t* rec, /* in: physical record */ + ulint comp); /* in: nonzero=compact page format */ +/********************************************************** +The following function is used to get the pointer of the next chained record +on the same page. */ +UNIV_INLINE +rec_t* +rec_get_next_ptr( +/*=============*/ + /* out: pointer to the next chained record, or + NULL if none */ + rec_t* rec, /* in: physical record */ + ulint comp); /* in: nonzero=compact page format */ +/********************************************************** +The following function is used to get the offset of the +next chained record on the same page. */ +UNIV_INLINE +ulint +rec_get_next_offs( +/*==============*/ + /* out: the page offset of the next + chained record, or 0 if none */ + const rec_t* rec, /* in: physical record */ + ulint comp); /* in: nonzero=compact page format */ +/********************************************************** +The following function is used to set the next record offset field +of an old-style record. */ +UNIV_INLINE +void +rec_set_next_offs_old( +/*==================*/ + rec_t* rec, /* in: old-style physical record */ + ulint next); /* in: offset of the next record */ +/********************************************************** +The following function is used to set the next record offset field +of a new-style record. */ +UNIV_INLINE +void +rec_set_next_offs_new( +/*==================*/ + rec_t* rec, /* in/out: new-style physical record */ + ulint next); /* in: offset of the next record */ +/********************************************************** +The following function is used to get the number of fields +in an old-style record. */ +UNIV_INLINE +ulint +rec_get_n_fields_old( +/*=================*/ + /* out: number of data fields */ + const rec_t* rec); /* in: physical record */ +/********************************************************** +The following function is used to get the number of fields +in a record. */ +UNIV_INLINE +ulint +rec_get_n_fields( +/*=============*/ + /* out: number of data fields */ + const rec_t* rec, /* in: physical record */ + const dict_index_t* index); /* in: record descriptor */ +/********************************************************** +The following function is used to get the number of records owned by the +previous directory record. */ +UNIV_INLINE +ulint +rec_get_n_owned_old( +/*================*/ + /* out: number of owned records */ + const rec_t* rec); /* in: old-style physical record */ +/********************************************************** +The following function is used to set the number of owned records. */ +UNIV_INLINE +void +rec_set_n_owned_old( +/*================*/ + /* out: TRUE on success */ + rec_t* rec, /* in: old-style physical record */ + ulint n_owned); /* in: the number of owned */ +/********************************************************** +The following function is used to get the number of records owned by the +previous directory record. */ +UNIV_INLINE +ulint +rec_get_n_owned_new( +/*================*/ + /* out: number of owned records */ + const rec_t* rec); /* in: new-style physical record */ +/********************************************************** +The following function is used to set the number of owned records. */ +UNIV_INLINE +void +rec_set_n_owned_new( +/*================*/ + rec_t* rec, /* in/out: new-style physical record */ + page_zip_des_t* page_zip,/* in/out: compressed page, or NULL */ + ulint n_owned);/* in: the number of owned */ +/********************************************************** +The following function is used to retrieve the info bits of +a record. */ +UNIV_INLINE +ulint +rec_get_info_bits( +/*==============*/ + /* out: info bits */ + const rec_t* rec, /* in: physical record */ + ulint comp); /* in: nonzero=compact page format */ +/********************************************************** +The following function is used to set the info bits of a record. */ +UNIV_INLINE +void +rec_set_info_bits_old( +/*==================*/ + rec_t* rec, /* in: old-style physical record */ + ulint bits); /* in: info bits */ +/********************************************************** +The following function is used to set the info bits of a record. */ +UNIV_INLINE +void +rec_set_info_bits_new( +/*==================*/ + rec_t* rec, /* in/out: new-style physical record */ + ulint bits); /* in: info bits */ +/********************************************************** +The following function retrieves the status bits of a new-style record. */ +UNIV_INLINE +ulint +rec_get_status( +/*===========*/ + /* out: status bits */ + const rec_t* rec); /* in: physical record */ + +/********************************************************** +The following function is used to set the status bits of a new-style record. */ +UNIV_INLINE +void +rec_set_status( +/*===========*/ + rec_t* rec, /* in/out: physical record */ + ulint bits); /* in: info bits */ + +/********************************************************** +The following function is used to retrieve the info and status +bits of a record. (Only compact records have status bits.) */ +UNIV_INLINE +ulint +rec_get_info_and_status_bits( +/*=========================*/ + /* out: info bits */ + const rec_t* rec, /* in: physical record */ + ulint comp); /* in: nonzero=compact page format */ +/********************************************************** +The following function is used to set the info and status +bits of a record. (Only compact records have status bits.) */ +UNIV_INLINE +void +rec_set_info_and_status_bits( +/*=========================*/ + rec_t* rec, /* in/out: compact physical record */ + ulint bits); /* in: info bits */ + +/********************************************************** +The following function tells if record is delete marked. */ +UNIV_INLINE +ulint +rec_get_deleted_flag( +/*=================*/ + /* out: nonzero if delete marked */ + const rec_t* rec, /* in: physical record */ + ulint comp); /* in: nonzero=compact page format */ +/********************************************************** +The following function is used to set the deleted bit. */ +UNIV_INLINE +void +rec_set_deleted_flag_old( +/*=====================*/ + rec_t* rec, /* in: old-style physical record */ + ulint flag); /* in: nonzero if delete marked */ +/********************************************************** +The following function is used to set the deleted bit. */ +UNIV_INLINE +void +rec_set_deleted_flag_new( +/*=====================*/ + rec_t* rec, /* in/out: new-style physical record */ + page_zip_des_t* page_zip,/* in/out: compressed page, or NULL */ + ulint flag); /* in: nonzero if delete marked */ +/********************************************************** +The following function tells if a new-style record is a node pointer. */ +UNIV_INLINE +ibool +rec_get_node_ptr_flag( +/*==================*/ + /* out: TRUE if node pointer */ + const rec_t* rec); /* in: physical record */ +/********************************************************** +The following function is used to get the order number +of an old-style record in the heap of the index page. */ +UNIV_INLINE +ulint +rec_get_heap_no_old( +/*================*/ + /* out: heap order number */ + const rec_t* rec); /* in: physical record */ +/********************************************************** +The following function is used to set the heap number +field in an old-style record. */ +UNIV_INLINE +void +rec_set_heap_no_old( +/*================*/ + rec_t* rec, /* in: physical record */ + ulint heap_no);/* in: the heap number */ +/********************************************************** +The following function is used to get the order number +of a new-style record in the heap of the index page. */ +UNIV_INLINE +ulint +rec_get_heap_no_new( +/*================*/ + /* out: heap order number */ + const rec_t* rec); /* in: physical record */ +/********************************************************** +The following function is used to set the heap number +field in a new-style record. */ +UNIV_INLINE +void +rec_set_heap_no_new( +/*================*/ + rec_t* rec, /* in/out: physical record */ + ulint heap_no);/* in: the heap number */ +/********************************************************** +The following function is used to test whether the data offsets +in the record are stored in one-byte or two-byte format. */ +UNIV_INLINE +ibool +rec_get_1byte_offs_flag( +/*====================*/ + /* out: TRUE if 1-byte form */ + const rec_t* rec); /* in: physical record */ + +/********************************************************** +Determine how many of the first n columns in a compact +physical record are stored externally. */ +UNIV_INTERN +ulint +rec_get_n_extern_new( +/*=================*/ + /* out: number of externally stored columns */ + const rec_t* rec, /* in: compact physical record */ + dict_index_t* index, /* in: record descriptor */ + ulint n); /* in: number of columns to scan */ + +/********************************************************** +The following function determines the offsets to each field +in the record. It can reuse a previously allocated array. */ +UNIV_INTERN +ulint* +rec_get_offsets_func( +/*=================*/ + /* out: the new offsets */ + const rec_t* rec, /* in: physical record */ + const dict_index_t* index, /* in: record descriptor */ + ulint* offsets,/* in/out: array consisting of + offsets[0] allocated elements, + or an array from rec_get_offsets(), + or NULL */ + ulint n_fields,/* in: maximum number of + initialized fields + (ULINT_UNDEFINED if all fields) */ + mem_heap_t** heap, /* in/out: memory heap */ + const char* file, /* in: file name where called */ + ulint line); /* in: line number where called */ + +#define rec_get_offsets(rec,index,offsets,n,heap) \ + rec_get_offsets_func(rec,index,offsets,n,heap,__FILE__,__LINE__) + +/********************************************************** +Determine the offset to each field in a leaf-page record +in ROW_FORMAT=COMPACT. This is a special case of +rec_init_offsets() and rec_get_offsets_func(). */ +UNIV_INTERN +void +rec_init_offsets_comp_ordinary( +/*===========================*/ + const rec_t* rec, /* in: physical record in + ROW_FORMAT=COMPACT */ + ulint extra, /* in: number of bytes to reserve + between the record header and + the data payload + (usually REC_N_NEW_EXTRA_BYTES) */ + const dict_index_t* index, /* in: record descriptor */ + ulint* offsets);/* in/out: array of offsets; + in: n=rec_offs_n_fields(offsets) */ + +/********************************************************** +The following function determines the offsets to each field +in the record. It can reuse a previously allocated array. */ +UNIV_INTERN +void +rec_get_offsets_reverse( +/*====================*/ + const byte* extra, /* in: the extra bytes of a + compact record in reverse order, + excluding the fixed-size + REC_N_NEW_EXTRA_BYTES */ + const dict_index_t* index, /* in: record descriptor */ + ulint node_ptr,/* in: nonzero=node pointer, + 0=leaf node */ + ulint* offsets);/* in/out: array consisting of + offsets[0] allocated elements */ + +/**************************************************************** +Validates offsets returned by rec_get_offsets(). */ +UNIV_INLINE +ibool +rec_offs_validate( +/*==============*/ + /* out: TRUE if valid */ + const rec_t* rec, /* in: record or NULL */ + const dict_index_t* index, /* in: record descriptor or NULL */ + const ulint* offsets);/* in: array returned by + rec_get_offsets() */ +#ifdef UNIV_DEBUG +/**************************************************************** +Updates debug data in offsets, in order to avoid bogus +rec_offs_validate() failures. */ +UNIV_INLINE +void +rec_offs_make_valid( +/*================*/ + const rec_t* rec, /* in: record */ + const dict_index_t* index, /* in: record descriptor */ + ulint* offsets);/* in: array returned by + rec_get_offsets() */ +#else +# define rec_offs_make_valid(rec, index, offsets) ((void) 0) +#endif /* UNIV_DEBUG */ + +/**************************************************************** +The following function is used to get the offset to the nth +data field in an old-style record. */ +UNIV_INTERN +ulint +rec_get_nth_field_offs_old( +/*=======================*/ + /* out: offset to the field */ + const rec_t* rec, /* in: record */ + ulint n, /* in: index of the field */ + ulint* len); /* out: length of the field; UNIV_SQL_NULL + if SQL null */ +#define rec_get_nth_field_old(rec, n, len) \ +((rec) + rec_get_nth_field_offs_old(rec, n, len)) +/**************************************************************** +Gets the physical size of an old-style field. +Also an SQL null may have a field of size > 0, +if the data type is of a fixed size. */ +UNIV_INLINE +ulint +rec_get_nth_field_size( +/*===================*/ + /* out: field size in bytes */ + const rec_t* rec, /* in: record */ + ulint n); /* in: index of the field */ +/**************************************************************** +The following function is used to get an offset to the nth +data field in a record. */ +UNIV_INLINE +ulint +rec_get_nth_field_offs( +/*===================*/ + /* out: offset from the origin of rec */ + const ulint* offsets,/* in: array returned by rec_get_offsets() */ + ulint n, /* in: index of the field */ + ulint* len); /* out: length of the field; UNIV_SQL_NULL + if SQL null */ +#define rec_get_nth_field(rec, offsets, n, len) \ +((rec) + rec_get_nth_field_offs(offsets, n, len)) +/********************************************************** +Determine if the offsets are for a record in the new +compact format. */ +UNIV_INLINE +ulint +rec_offs_comp( +/*==========*/ + /* out: nonzero if compact format */ + const ulint* offsets);/* in: array returned by rec_get_offsets() */ +/********************************************************** +Determine if the offsets are for a record containing +externally stored columns. */ +UNIV_INLINE +ulint +rec_offs_any_extern( +/*================*/ + /* out: nonzero if externally stored */ + const ulint* offsets);/* in: array returned by rec_get_offsets() */ +/********************************************************** +Returns nonzero if the extern bit is set in nth field of rec. */ +UNIV_INLINE +ulint +rec_offs_nth_extern( +/*================*/ + /* out: nonzero if externally stored */ + const ulint* offsets,/* in: array returned by rec_get_offsets() */ + ulint n); /* in: nth field */ +/********************************************************** +Returns nonzero if the SQL NULL bit is set in nth field of rec. */ +UNIV_INLINE +ulint +rec_offs_nth_sql_null( +/*==================*/ + /* out: nonzero if SQL NULL */ + const ulint* offsets,/* in: array returned by rec_get_offsets() */ + ulint n); /* in: nth field */ +/********************************************************** +Gets the physical size of a field. */ +UNIV_INLINE +ulint +rec_offs_nth_size( +/*==============*/ + /* out: length of field */ + const ulint* offsets,/* in: array returned by rec_get_offsets() */ + ulint n); /* in: nth field */ + +/********************************************************** +Returns the number of extern bits set in a record. */ +UNIV_INLINE +ulint +rec_offs_n_extern( +/*==============*/ + /* out: number of externally stored fields */ + const ulint* offsets);/* in: array returned by rec_get_offsets() */ +/*************************************************************** +This is used to modify the value of an already existing field in a record. +The previous value must have exactly the same size as the new value. If len +is UNIV_SQL_NULL then the field is treated as an SQL null. +For records in ROW_FORMAT=COMPACT (new-style records), len must not be +UNIV_SQL_NULL unless the field already is SQL null. */ +UNIV_INLINE +void +rec_set_nth_field( +/*==============*/ + rec_t* rec, /* in: record */ + const ulint* offsets,/* in: array returned by rec_get_offsets() */ + ulint n, /* in: index number of the field */ + const void* data, /* in: pointer to the data if not SQL null */ + ulint len); /* in: length of the data or UNIV_SQL_NULL */ +/************************************************************** +The following function returns the data size of an old-style physical +record, that is the sum of field lengths. SQL null fields +are counted as length 0 fields. The value returned by the function +is the distance from record origin to record end in bytes. */ +UNIV_INLINE +ulint +rec_get_data_size_old( +/*==================*/ + /* out: size */ + const rec_t* rec); /* in: physical record */ +/************************************************************** +The following function returns the number of allocated elements +for an array of offsets. */ +UNIV_INLINE +ulint +rec_offs_get_n_alloc( +/*=================*/ + /* out: number of elements */ + const ulint* offsets);/* in: array for rec_get_offsets() */ +/************************************************************** +The following function sets the number of allocated elements +for an array of offsets. */ +UNIV_INLINE +void +rec_offs_set_n_alloc( +/*=================*/ + ulint* offsets, /* out: array for rec_get_offsets(), + must be allocated */ + ulint n_alloc); /* in: number of elements */ +#define rec_offs_init(offsets) \ + rec_offs_set_n_alloc(offsets, (sizeof offsets) / sizeof *offsets) +/************************************************************** +The following function returns the number of fields in a record. */ +UNIV_INLINE +ulint +rec_offs_n_fields( +/*==============*/ + /* out: number of fields */ + const ulint* offsets);/* in: array returned by rec_get_offsets() */ +/************************************************************** +The following function returns the data size of a physical +record, that is the sum of field lengths. SQL null fields +are counted as length 0 fields. The value returned by the function +is the distance from record origin to record end in bytes. */ +UNIV_INLINE +ulint +rec_offs_data_size( +/*===============*/ + /* out: size */ + const ulint* offsets);/* in: array returned by rec_get_offsets() */ +/************************************************************** +Returns the total size of record minus data size of record. +The value returned by the function is the distance from record +start to record origin in bytes. */ +UNIV_INLINE +ulint +rec_offs_extra_size( +/*================*/ + /* out: size */ + const ulint* offsets);/* in: array returned by rec_get_offsets() */ +/************************************************************** +Returns the total size of a physical record. */ +UNIV_INLINE +ulint +rec_offs_size( +/*==========*/ + /* out: size */ + const ulint* offsets);/* in: array returned by rec_get_offsets() */ +/************************************************************** +Returns a pointer to the start of the record. */ +UNIV_INLINE +byte* +rec_get_start( +/*==========*/ + /* out: pointer to start */ + rec_t* rec, /* in: pointer to record */ + const ulint* offsets);/* in: array returned by rec_get_offsets() */ +/************************************************************** +Returns a pointer to the end of the record. */ +UNIV_INLINE +byte* +rec_get_end( +/*========*/ + /* out: pointer to end */ + rec_t* rec, /* in: pointer to record */ + const ulint* offsets);/* in: array returned by rec_get_offsets() */ +/******************************************************************* +Copies a physical record to a buffer. */ +UNIV_INLINE +rec_t* +rec_copy( +/*=====*/ + /* out: pointer to the origin of the copy */ + void* buf, /* in: buffer */ + const rec_t* rec, /* in: physical record */ + const ulint* offsets);/* in: array returned by rec_get_offsets() */ +/****************************************************************** +Copies the first n fields of a physical record to a new physical record in +a buffer. */ +UNIV_INTERN +rec_t* +rec_copy_prefix_to_buf( +/*===================*/ + /* out, own: copied record */ + const rec_t* rec, /* in: physical record */ + const dict_index_t* index, /* in: record descriptor */ + ulint n_fields, /* in: number of fields + to copy */ + byte** buf, /* in/out: memory buffer + for the copied prefix, + or NULL */ + ulint* buf_size); /* in/out: buffer size */ +/**************************************************************** +Folds a prefix of a physical record to a ulint. */ +UNIV_INLINE +ulint +rec_fold( +/*=====*/ + /* out: the folded value */ + const rec_t* rec, /* in: the physical record */ + const ulint* offsets, /* in: array returned by + rec_get_offsets() */ + ulint n_fields, /* in: number of complete + fields to fold */ + ulint n_bytes, /* in: number of bytes to fold + in an incomplete last field */ + dulint tree_id) /* in: index tree id */ + __attribute__((pure)); +/************************************************************* +Builds a ROW_FORMAT=COMPACT record out of a data tuple. */ +UNIV_INTERN +void +rec_convert_dtuple_to_rec_comp( +/*===========================*/ + rec_t* rec, /* in: origin of record */ + ulint extra, /* in: number of bytes to + reserve between the record + header and the data payload + (normally REC_N_NEW_EXTRA_BYTES) */ + const dict_index_t* index, /* in: record descriptor */ + ulint status, /* in: status bits of the record */ + const dfield_t* fields, /* in: array of data fields */ + ulint n_fields);/* in: number of data fields */ +/************************************************************* +Builds a physical record out of a data tuple and +stores it into the given buffer. */ +UNIV_INTERN +rec_t* +rec_convert_dtuple_to_rec( +/*======================*/ + /* out: pointer to the origin + of physical record */ + byte* buf, /* in: start address of the + physical record */ + const dict_index_t* index, /* in: record descriptor */ + const dtuple_t* dtuple, /* in: data tuple */ + ulint n_ext); /* in: number of + externally stored columns */ +/************************************************************** +Returns the extra size of an old-style physical record if we know its +data size and number of fields. */ +UNIV_INLINE +ulint +rec_get_converted_extra_size( +/*=========================*/ + /* out: extra size */ + ulint data_size, /* in: data size */ + ulint n_fields, /* in: number of fields */ + ulint n_ext) /* in: number of externally stored columns */ + __attribute__((const)); +/************************************************************** +Determines the size of a data tuple prefix in ROW_FORMAT=COMPACT. */ +UNIV_INTERN +ulint +rec_get_converted_size_comp_prefix( +/*===============================*/ + /* out: total size */ + const dict_index_t* index, /* in: record descriptor; + dict_table_is_comp() is + assumed to hold, even if + it does not */ + const dfield_t* fields, /* in: array of data fields */ + ulint n_fields,/* in: number of data fields */ + ulint* extra); /* out: extra size */ +/************************************************************** +Determines the size of a data tuple in ROW_FORMAT=COMPACT. */ +UNIV_INTERN +ulint +rec_get_converted_size_comp( +/*========================*/ + /* out: total size */ + const dict_index_t* index, /* in: record descriptor; + dict_table_is_comp() is + assumed to hold, even if + it does not */ + ulint status, /* in: status bits of the record */ + const dfield_t* fields, /* in: array of data fields */ + ulint n_fields,/* in: number of data fields */ + ulint* extra); /* out: extra size */ +/************************************************************** +The following function returns the size of a data tuple when converted to +a physical record. */ +UNIV_INLINE +ulint +rec_get_converted_size( +/*===================*/ + /* out: size */ + dict_index_t* index, /* in: record descriptor */ + const dtuple_t* dtuple, /* in: data tuple */ + ulint n_ext); /* in: number of externally stored columns */ +/****************************************************************** +Copies the first n fields of a physical record to a data tuple. +The fields are copied to the memory heap. */ +UNIV_INTERN +void +rec_copy_prefix_to_dtuple( +/*======================*/ + dtuple_t* tuple, /* out: data tuple */ + const rec_t* rec, /* in: physical record */ + const dict_index_t* index, /* in: record descriptor */ + ulint n_fields, /* in: number of fields + to copy */ + mem_heap_t* heap); /* in: memory heap */ +/******************************************************************* +Validates the consistency of a physical record. */ +UNIV_INTERN +ibool +rec_validate( +/*=========*/ + /* out: TRUE if ok */ + const rec_t* rec, /* in: physical record */ + const ulint* offsets);/* in: array returned by rec_get_offsets() */ +/******************************************************************* +Prints an old-style physical record. */ +UNIV_INTERN +void +rec_print_old( +/*==========*/ + FILE* file, /* in: file where to print */ + const rec_t* rec); /* in: physical record */ +/******************************************************************* +Prints a physical record in ROW_FORMAT=COMPACT. Ignores the +record header. */ +UNIV_INTERN +void +rec_print_comp( +/*===========*/ + FILE* file, /* in: file where to print */ + const rec_t* rec, /* in: physical record */ + const ulint* offsets);/* in: array returned by rec_get_offsets() */ +/******************************************************************* +Prints a physical record. */ +UNIV_INTERN +void +rec_print_new( +/*==========*/ + FILE* file, /* in: file where to print */ + const rec_t* rec, /* in: physical record */ + const ulint* offsets);/* in: array returned by rec_get_offsets() */ +/******************************************************************* +Prints a physical record. */ +UNIV_INTERN +void +rec_print( +/*======*/ + FILE* file, /* in: file where to print */ + const rec_t* rec, /* in: physical record */ + dict_index_t* index); /* in: record descriptor */ + +#define REC_INFO_BITS 6 /* This is single byte bit-field */ + +/* Maximum lengths for the data in a physical record if the offsets +are given in one byte (resp. two byte) format. */ +#define REC_1BYTE_OFFS_LIMIT 0x7FUL +#define REC_2BYTE_OFFS_LIMIT 0x7FFFUL + +/* The data size of record must be smaller than this because we reserve +two upmost bits in a two byte offset for special purposes */ +#define REC_MAX_DATA_SIZE (16 * 1024) + +#ifndef UNIV_NONINL +#include "rem0rec.ic" +#endif + +#endif === added file 'storage/xtradb/include/rem0rec.ic' --- a/storage/xtradb/include/rem0rec.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/rem0rec.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,1652 @@ +/***************************************************************************** + +Copyright (c) 1994, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/************************************************************************ +Record manager + +Created 5/30/1994 Heikki Tuuri +*************************************************************************/ + +#include "mach0data.h" +#include "ut0byte.h" +#include "dict0dict.h" + +/* Compact flag ORed to the extra size returned by rec_get_offsets() */ +#define REC_OFFS_COMPACT ((ulint) 1 << 31) +/* SQL NULL flag in offsets returned by rec_get_offsets() */ +#define REC_OFFS_SQL_NULL ((ulint) 1 << 31) +/* External flag in offsets returned by rec_get_offsets() */ +#define REC_OFFS_EXTERNAL ((ulint) 1 << 30) +/* Mask for offsets returned by rec_get_offsets() */ +#define REC_OFFS_MASK (REC_OFFS_EXTERNAL - 1) + +/* Offsets of the bit-fields in an old-style record. NOTE! In the table the +most significant bytes and bits are written below less significant. + + (1) byte offset (2) bit usage within byte + downward from + origin -> 1 8 bits pointer to next record + 2 8 bits pointer to next record + 3 1 bit short flag + 7 bits number of fields + 4 3 bits number of fields + 5 bits heap number + 5 8 bits heap number + 6 4 bits n_owned + 4 bits info bits +*/ + +/* Offsets of the bit-fields in a new-style record. NOTE! In the table the +most significant bytes and bits are written below less significant. + + (1) byte offset (2) bit usage within byte + downward from + origin -> 1 8 bits relative offset of next record + 2 8 bits relative offset of next record + the relative offset is an unsigned 16-bit + integer: + (offset_of_next_record + - offset_of_this_record) mod 64Ki, + where mod is the modulo as a non-negative + number; + we can calculate the the offset of the next + record with the formula: + relative_offset + offset_of_this_record + mod UNIV_PAGE_SIZE + 3 3 bits status: + 000=conventional record + 001=node pointer record (inside B-tree) + 010=infimum record + 011=supremum record + 1xx=reserved + 5 bits heap number + 4 8 bits heap number + 5 4 bits n_owned + 4 bits info bits +*/ + +/* We list the byte offsets from the origin of the record, the mask, +and the shift needed to obtain each bit-field of the record. */ + +#define REC_NEXT 2 +#define REC_NEXT_MASK 0xFFFFUL +#define REC_NEXT_SHIFT 0 + +#define REC_OLD_SHORT 3 /* This is single byte bit-field */ +#define REC_OLD_SHORT_MASK 0x1UL +#define REC_OLD_SHORT_SHIFT 0 + +#define REC_OLD_N_FIELDS 4 +#define REC_OLD_N_FIELDS_MASK 0x7FEUL +#define REC_OLD_N_FIELDS_SHIFT 1 + +#define REC_NEW_STATUS 3 /* This is single byte bit-field */ +#define REC_NEW_STATUS_MASK 0x7UL +#define REC_NEW_STATUS_SHIFT 0 + +#define REC_OLD_HEAP_NO 5 +#define REC_HEAP_NO_MASK 0xFFF8UL +#if 0 /* defined in rem0rec.h for use of page0zip.c */ +#define REC_NEW_HEAP_NO 4 +#define REC_HEAP_NO_SHIFT 3 +#endif + +#define REC_OLD_N_OWNED 6 /* This is single byte bit-field */ +#define REC_NEW_N_OWNED 5 /* This is single byte bit-field */ +#define REC_N_OWNED_MASK 0xFUL +#define REC_N_OWNED_SHIFT 0 + +#define REC_OLD_INFO_BITS 6 /* This is single byte bit-field */ +#define REC_NEW_INFO_BITS 5 /* This is single byte bit-field */ +#define REC_INFO_BITS_MASK 0xF0UL +#define REC_INFO_BITS_SHIFT 0 + +/* The following masks are used to filter the SQL null bit from +one-byte and two-byte offsets */ + +#define REC_1BYTE_SQL_NULL_MASK 0x80UL +#define REC_2BYTE_SQL_NULL_MASK 0x8000UL + +/* In a 2-byte offset the second most significant bit denotes +a field stored to another page: */ + +#define REC_2BYTE_EXTERN_MASK 0x4000UL + +#if REC_OLD_SHORT_MASK << (8 * (REC_OLD_SHORT - 3)) \ + ^ REC_OLD_N_FIELDS_MASK << (8 * (REC_OLD_N_FIELDS - 4)) \ + ^ REC_HEAP_NO_MASK << (8 * (REC_OLD_HEAP_NO - 4)) \ + ^ REC_N_OWNED_MASK << (8 * (REC_OLD_N_OWNED - 3)) \ + ^ REC_INFO_BITS_MASK << (8 * (REC_OLD_INFO_BITS - 3)) \ + ^ 0xFFFFFFFFUL +# error "sum of old-style masks != 0xFFFFFFFFUL" +#endif +#if REC_NEW_STATUS_MASK << (8 * (REC_NEW_STATUS - 3)) \ + ^ REC_HEAP_NO_MASK << (8 * (REC_NEW_HEAP_NO - 4)) \ + ^ REC_N_OWNED_MASK << (8 * (REC_NEW_N_OWNED - 3)) \ + ^ REC_INFO_BITS_MASK << (8 * (REC_NEW_INFO_BITS - 3)) \ + ^ 0xFFFFFFUL +# error "sum of new-style masks != 0xFFFFFFUL" +#endif + +/*************************************************************** +Sets the value of the ith field SQL null bit of an old-style record. */ +UNIV_INTERN +void +rec_set_nth_field_null_bit( +/*=======================*/ + rec_t* rec, /* in: record */ + ulint i, /* in: ith field */ + ibool val); /* in: value to set */ +/*************************************************************** +Sets an old-style record field to SQL null. +The physical size of the field is not changed. */ +UNIV_INTERN +void +rec_set_nth_field_sql_null( +/*=======================*/ + rec_t* rec, /* in: record */ + ulint n); /* in: index of the field */ + +/********************************************************** +Gets a bit field from within 1 byte. */ +UNIV_INLINE +ulint +rec_get_bit_field_1( +/*================*/ + const rec_t* rec, /* in: pointer to record origin */ + ulint offs, /* in: offset from the origin down */ + ulint mask, /* in: mask used to filter bits */ + ulint shift) /* in: shift right applied after masking */ +{ + ut_ad(rec); + + return((mach_read_from_1(rec - offs) & mask) >> shift); +} + +/********************************************************** +Sets a bit field within 1 byte. */ +UNIV_INLINE +void +rec_set_bit_field_1( +/*================*/ + rec_t* rec, /* in: pointer to record origin */ + ulint val, /* in: value to set */ + ulint offs, /* in: offset from the origin down */ + ulint mask, /* in: mask used to filter bits */ + ulint shift) /* in: shift right applied after masking */ +{ + ut_ad(rec); + ut_ad(offs <= REC_N_OLD_EXTRA_BYTES); + ut_ad(mask); + ut_ad(mask <= 0xFFUL); + ut_ad(((mask >> shift) << shift) == mask); + ut_ad(((val << shift) & mask) == (val << shift)); + + mach_write_to_1(rec - offs, + (mach_read_from_1(rec - offs) & ~mask) + | (val << shift)); +} + +/********************************************************** +Gets a bit field from within 2 bytes. */ +UNIV_INLINE +ulint +rec_get_bit_field_2( +/*================*/ + const rec_t* rec, /* in: pointer to record origin */ + ulint offs, /* in: offset from the origin down */ + ulint mask, /* in: mask used to filter bits */ + ulint shift) /* in: shift right applied after masking */ +{ + ut_ad(rec); + + return((mach_read_from_2(rec - offs) & mask) >> shift); +} + +/********************************************************** +Sets a bit field within 2 bytes. */ +UNIV_INLINE +void +rec_set_bit_field_2( +/*================*/ + rec_t* rec, /* in: pointer to record origin */ + ulint val, /* in: value to set */ + ulint offs, /* in: offset from the origin down */ + ulint mask, /* in: mask used to filter bits */ + ulint shift) /* in: shift right applied after masking */ +{ + ut_ad(rec); + ut_ad(offs <= REC_N_OLD_EXTRA_BYTES); + ut_ad(mask > 0xFFUL); + ut_ad(mask <= 0xFFFFUL); + ut_ad((mask >> shift) & 1); + ut_ad(0 == ((mask >> shift) & ((mask >> shift) + 1))); + ut_ad(((mask >> shift) << shift) == mask); + ut_ad(((val << shift) & mask) == (val << shift)); + + mach_write_to_2(rec - offs, + (mach_read_from_2(rec - offs) & ~mask) + | (val << shift)); +} + +/********************************************************** +The following function is used to get the pointer of the next chained record +on the same page. */ +UNIV_INLINE +const rec_t* +rec_get_next_ptr_const( +/*===================*/ + /* out: pointer to the next chained record, or + NULL if none */ + const rec_t* rec, /* in: physical record */ + ulint comp) /* in: nonzero=compact page format */ +{ + ulint field_value; + + ut_ad(REC_NEXT_MASK == 0xFFFFUL); + ut_ad(REC_NEXT_SHIFT == 0); + + field_value = mach_read_from_2(rec - REC_NEXT); + + if (UNIV_UNLIKELY(field_value == 0)) { + + return(NULL); + } + + if (UNIV_EXPECT(comp, REC_OFFS_COMPACT)) { +#if UNIV_PAGE_SIZE <= 32768 + /* Note that for 64 KiB pages, field_value can 'wrap around' + and the debug assertion is not valid */ + + /* In the following assertion, field_value is interpreted + as signed 16-bit integer in 2's complement arithmetics. + If all platforms defined int16_t in the standard headers, + the expression could be written simpler as + (int16_t) field_value + ut_align_offset(...) < UNIV_PAGE_SIZE + */ + ut_ad((field_value >= 32768 + ? field_value - 65536 + : field_value) + + ut_align_offset(rec, UNIV_PAGE_SIZE) + < UNIV_PAGE_SIZE); +#endif + /* There must be at least REC_N_NEW_EXTRA_BYTES + 1 + between each record. */ + ut_ad((field_value > REC_N_NEW_EXTRA_BYTES + && field_value < 32768) + || field_value < (uint16) -REC_N_NEW_EXTRA_BYTES); + + return((byte*) ut_align_down(rec, UNIV_PAGE_SIZE) + + ut_align_offset(rec + field_value, UNIV_PAGE_SIZE)); + } else { + ut_ad(field_value < UNIV_PAGE_SIZE); + + return((byte*) ut_align_down(rec, UNIV_PAGE_SIZE) + + field_value); + } +} + +/********************************************************** +The following function is used to get the pointer of the next chained record +on the same page. */ +UNIV_INLINE +rec_t* +rec_get_next_ptr( +/*=============*/ + /* out: pointer to the next chained record, or + NULL if none */ + rec_t* rec, /* in: physical record */ + ulint comp) /* in: nonzero=compact page format */ +{ + return((rec_t*) rec_get_next_ptr_const(rec, comp)); +} + +/********************************************************** +The following function is used to get the offset of the next chained record +on the same page. */ +UNIV_INLINE +ulint +rec_get_next_offs( +/*==============*/ + /* out: the page offset of the next + chained record, or 0 if none */ + const rec_t* rec, /* in: physical record */ + ulint comp) /* in: nonzero=compact page format */ +{ + ulint field_value; +#if REC_NEXT_MASK != 0xFFFFUL +# error "REC_NEXT_MASK != 0xFFFFUL" +#endif +#if REC_NEXT_SHIFT +# error "REC_NEXT_SHIFT != 0" +#endif + + field_value = mach_read_from_2(rec - REC_NEXT); + + if (UNIV_EXPECT(comp, REC_OFFS_COMPACT)) { +#if UNIV_PAGE_SIZE <= 32768 + /* Note that for 64 KiB pages, field_value can 'wrap around' + and the debug assertion is not valid */ + + /* In the following assertion, field_value is interpreted + as signed 16-bit integer in 2's complement arithmetics. + If all platforms defined int16_t in the standard headers, + the expression could be written simpler as + (int16_t) field_value + ut_align_offset(...) < UNIV_PAGE_SIZE + */ + ut_ad((field_value >= 32768 + ? field_value - 65536 + : field_value) + + ut_align_offset(rec, UNIV_PAGE_SIZE) + < UNIV_PAGE_SIZE); +#endif + if (UNIV_UNLIKELY(field_value == 0)) { + + return(0); + } + + /* There must be at least REC_N_NEW_EXTRA_BYTES + 1 + between each record. */ + ut_ad((field_value > REC_N_NEW_EXTRA_BYTES + && field_value < 32768) + || field_value < (uint16) -REC_N_NEW_EXTRA_BYTES); + + return(ut_align_offset(rec + field_value, UNIV_PAGE_SIZE)); + } else { + ut_ad(field_value < UNIV_PAGE_SIZE); + + return(field_value); + } +} + +/********************************************************** +The following function is used to set the next record offset field +of an old-style record. */ +UNIV_INLINE +void +rec_set_next_offs_old( +/*==================*/ + rec_t* rec, /* in: old-style physical record */ + ulint next) /* in: offset of the next record */ +{ + ut_ad(rec); + ut_ad(UNIV_PAGE_SIZE > next); +#if REC_NEXT_MASK != 0xFFFFUL +# error "REC_NEXT_MASK != 0xFFFFUL" +#endif +#if REC_NEXT_SHIFT +# error "REC_NEXT_SHIFT != 0" +#endif + + mach_write_to_2(rec - REC_NEXT, next); +} + +/********************************************************** +The following function is used to set the next record offset field +of a new-style record. */ +UNIV_INLINE +void +rec_set_next_offs_new( +/*==================*/ + rec_t* rec, /* in/out: new-style physical record */ + ulint next) /* in: offset of the next record */ +{ + ulint field_value; + + ut_ad(rec); + ut_ad(UNIV_PAGE_SIZE > next); + + if (UNIV_UNLIKELY(!next)) { + field_value = 0; + } else { + /* The following two statements calculate + next - offset_of_rec mod 64Ki, where mod is the modulo + as a non-negative number */ + + field_value = (ulint) + ((lint) next + - (lint) ut_align_offset(rec, UNIV_PAGE_SIZE)); + field_value &= REC_NEXT_MASK; + } + + mach_write_to_2(rec - REC_NEXT, field_value); +} + +/********************************************************** +The following function is used to get the number of fields +in an old-style record. */ +UNIV_INLINE +ulint +rec_get_n_fields_old( +/*=================*/ + /* out: number of data fields */ + const rec_t* rec) /* in: physical record */ +{ + ulint ret; + + ut_ad(rec); + + ret = rec_get_bit_field_2(rec, REC_OLD_N_FIELDS, + REC_OLD_N_FIELDS_MASK, + REC_OLD_N_FIELDS_SHIFT); + ut_ad(ret <= REC_MAX_N_FIELDS); + ut_ad(ret > 0); + + return(ret); +} + +/********************************************************** +The following function is used to set the number of fields +in an old-style record. */ +UNIV_INLINE +void +rec_set_n_fields_old( +/*=================*/ + rec_t* rec, /* in: physical record */ + ulint n_fields) /* in: the number of fields */ +{ + ut_ad(rec); + ut_ad(n_fields <= REC_MAX_N_FIELDS); + ut_ad(n_fields > 0); + + rec_set_bit_field_2(rec, n_fields, REC_OLD_N_FIELDS, + REC_OLD_N_FIELDS_MASK, REC_OLD_N_FIELDS_SHIFT); +} + +/********************************************************** +The following function retrieves the status bits of a new-style record. */ +UNIV_INLINE +ulint +rec_get_status( +/*===========*/ + /* out: status bits */ + const rec_t* rec) /* in: physical record */ +{ + ulint ret; + + ut_ad(rec); + + ret = rec_get_bit_field_1(rec, REC_NEW_STATUS, + REC_NEW_STATUS_MASK, REC_NEW_STATUS_SHIFT); + ut_ad((ret & ~REC_NEW_STATUS_MASK) == 0); + + return(ret); +} + +/********************************************************** +The following function is used to get the number of fields +in a record. */ +UNIV_INLINE +ulint +rec_get_n_fields( +/*=============*/ + /* out: number of data fields */ + const rec_t* rec, /* in: physical record */ + const dict_index_t* index) /* in: record descriptor */ +{ + ut_ad(rec); + ut_ad(index); + + if (!dict_table_is_comp(index->table)) { + return(rec_get_n_fields_old(rec)); + } + + switch (rec_get_status(rec)) { + case REC_STATUS_ORDINARY: + return(dict_index_get_n_fields(index)); + case REC_STATUS_NODE_PTR: + return(dict_index_get_n_unique_in_tree(index) + 1); + case REC_STATUS_INFIMUM: + case REC_STATUS_SUPREMUM: + return(1); + default: + ut_error; + return(ULINT_UNDEFINED); + } +} + +/********************************************************** +The following function is used to get the number of records owned by the +previous directory record. */ +UNIV_INLINE +ulint +rec_get_n_owned_old( +/*================*/ + /* out: number of owned records */ + const rec_t* rec) /* in: old-style physical record */ +{ + return(rec_get_bit_field_1(rec, REC_OLD_N_OWNED, + REC_N_OWNED_MASK, REC_N_OWNED_SHIFT)); +} + +/********************************************************** +The following function is used to set the number of owned records. */ +UNIV_INLINE +void +rec_set_n_owned_old( +/*================*/ + /* out: TRUE on success */ + rec_t* rec, /* in: old-style physical record */ + ulint n_owned) /* in: the number of owned */ +{ + rec_set_bit_field_1(rec, n_owned, REC_OLD_N_OWNED, + REC_N_OWNED_MASK, REC_N_OWNED_SHIFT); +} + +/********************************************************** +The following function is used to get the number of records owned by the +previous directory record. */ +UNIV_INLINE +ulint +rec_get_n_owned_new( +/*================*/ + /* out: number of owned records */ + const rec_t* rec) /* in: new-style physical record */ +{ + return(rec_get_bit_field_1(rec, REC_NEW_N_OWNED, + REC_N_OWNED_MASK, REC_N_OWNED_SHIFT)); +} + +/********************************************************** +The following function is used to set the number of owned records. */ +UNIV_INLINE +void +rec_set_n_owned_new( +/*================*/ + rec_t* rec, /* in/out: new-style physical record */ + page_zip_des_t* page_zip,/* in/out: compressed page, or NULL */ + ulint n_owned)/* in: the number of owned */ +{ + rec_set_bit_field_1(rec, n_owned, REC_NEW_N_OWNED, + REC_N_OWNED_MASK, REC_N_OWNED_SHIFT); + if (UNIV_LIKELY_NULL(page_zip) + && UNIV_LIKELY(rec_get_status(rec) + != REC_STATUS_SUPREMUM)) { + page_zip_rec_set_owned(page_zip, rec, n_owned); + } +} + +/********************************************************** +The following function is used to retrieve the info bits of a record. */ +UNIV_INLINE +ulint +rec_get_info_bits( +/*==============*/ + /* out: info bits */ + const rec_t* rec, /* in: physical record */ + ulint comp) /* in: nonzero=compact page format */ +{ + return(rec_get_bit_field_1( + rec, comp ? REC_NEW_INFO_BITS : REC_OLD_INFO_BITS, + REC_INFO_BITS_MASK, REC_INFO_BITS_SHIFT)); +} + +/********************************************************** +The following function is used to set the info bits of a record. */ +UNIV_INLINE +void +rec_set_info_bits_old( +/*==================*/ + rec_t* rec, /* in: old-style physical record */ + ulint bits) /* in: info bits */ +{ + rec_set_bit_field_1(rec, bits, REC_OLD_INFO_BITS, + REC_INFO_BITS_MASK, REC_INFO_BITS_SHIFT); +} +/********************************************************** +The following function is used to set the info bits of a record. */ +UNIV_INLINE +void +rec_set_info_bits_new( +/*==================*/ + rec_t* rec, /* in/out: new-style physical record */ + ulint bits) /* in: info bits */ +{ + rec_set_bit_field_1(rec, bits, REC_NEW_INFO_BITS, + REC_INFO_BITS_MASK, REC_INFO_BITS_SHIFT); +} + +/********************************************************** +The following function is used to set the status bits of a new-style record. */ +UNIV_INLINE +void +rec_set_status( +/*===========*/ + rec_t* rec, /* in/out: physical record */ + ulint bits) /* in: info bits */ +{ + rec_set_bit_field_1(rec, bits, REC_NEW_STATUS, + REC_NEW_STATUS_MASK, REC_NEW_STATUS_SHIFT); +} + +/********************************************************** +The following function is used to retrieve the info and status +bits of a record. (Only compact records have status bits.) */ +UNIV_INLINE +ulint +rec_get_info_and_status_bits( +/*=========================*/ + /* out: info bits */ + const rec_t* rec, /* in: physical record */ + ulint comp) /* in: nonzero=compact page format */ +{ + ulint bits; +#if (REC_NEW_STATUS_MASK >> REC_NEW_STATUS_SHIFT) \ +& (REC_INFO_BITS_MASK >> REC_INFO_BITS_SHIFT) +# error "REC_NEW_STATUS_MASK and REC_INFO_BITS_MASK overlap" +#endif + if (UNIV_EXPECT(comp, REC_OFFS_COMPACT)) { + bits = rec_get_info_bits(rec, TRUE) | rec_get_status(rec); + } else { + bits = rec_get_info_bits(rec, FALSE); + ut_ad(!(bits & ~(REC_INFO_BITS_MASK >> REC_INFO_BITS_SHIFT))); + } + return(bits); +} +/********************************************************** +The following function is used to set the info and status +bits of a record. (Only compact records have status bits.) */ +UNIV_INLINE +void +rec_set_info_and_status_bits( +/*=========================*/ + rec_t* rec, /* in/out: physical record */ + ulint bits) /* in: info bits */ +{ +#if (REC_NEW_STATUS_MASK >> REC_NEW_STATUS_SHIFT) \ +& (REC_INFO_BITS_MASK >> REC_INFO_BITS_SHIFT) +# error "REC_NEW_STATUS_MASK and REC_INFO_BITS_MASK overlap" +#endif + rec_set_status(rec, bits & REC_NEW_STATUS_MASK); + rec_set_info_bits_new(rec, bits & ~REC_NEW_STATUS_MASK); +} + +/********************************************************** +The following function tells if record is delete marked. */ +UNIV_INLINE +ulint +rec_get_deleted_flag( +/*=================*/ + /* out: nonzero if delete marked */ + const rec_t* rec, /* in: physical record */ + ulint comp) /* in: nonzero=compact page format */ +{ + if (UNIV_EXPECT(comp, REC_OFFS_COMPACT)) { + return(UNIV_UNLIKELY( + rec_get_bit_field_1(rec, REC_NEW_INFO_BITS, + REC_INFO_DELETED_FLAG, + REC_INFO_BITS_SHIFT))); + } else { + return(UNIV_UNLIKELY( + rec_get_bit_field_1(rec, REC_OLD_INFO_BITS, + REC_INFO_DELETED_FLAG, + REC_INFO_BITS_SHIFT))); + } +} + +/********************************************************** +The following function is used to set the deleted bit. */ +UNIV_INLINE +void +rec_set_deleted_flag_old( +/*=====================*/ + rec_t* rec, /* in: old-style physical record */ + ulint flag) /* in: nonzero if delete marked */ +{ + ulint val; + + val = rec_get_info_bits(rec, FALSE); + + if (flag) { + val |= REC_INFO_DELETED_FLAG; + } else { + val &= ~REC_INFO_DELETED_FLAG; + } + + rec_set_info_bits_old(rec, val); +} + +/********************************************************** +The following function is used to set the deleted bit. */ +UNIV_INLINE +void +rec_set_deleted_flag_new( +/*=====================*/ + rec_t* rec, /* in/out: new-style physical record */ + page_zip_des_t* page_zip,/* in/out: compressed page, or NULL */ + ulint flag) /* in: nonzero if delete marked */ +{ + ulint val; + + val = rec_get_info_bits(rec, TRUE); + + if (flag) { + val |= REC_INFO_DELETED_FLAG; + } else { + val &= ~REC_INFO_DELETED_FLAG; + } + + rec_set_info_bits_new(rec, val); + + if (UNIV_LIKELY_NULL(page_zip)) { + page_zip_rec_set_deleted(page_zip, rec, flag); + } +} + +/********************************************************** +The following function tells if a new-style record is a node pointer. */ +UNIV_INLINE +ibool +rec_get_node_ptr_flag( +/*==================*/ + /* out: TRUE if node pointer */ + const rec_t* rec) /* in: physical record */ +{ + return(REC_STATUS_NODE_PTR == rec_get_status(rec)); +} + +/********************************************************** +The following function is used to get the order number +of an old-style record in the heap of the index page. */ +UNIV_INLINE +ulint +rec_get_heap_no_old( +/*================*/ + /* out: heap order number */ + const rec_t* rec) /* in: physical record */ +{ + return(rec_get_bit_field_2(rec, REC_OLD_HEAP_NO, + REC_HEAP_NO_MASK, REC_HEAP_NO_SHIFT)); +} + +/********************************************************** +The following function is used to set the heap number +field in an old-style record. */ +UNIV_INLINE +void +rec_set_heap_no_old( +/*================*/ + rec_t* rec, /* in: physical record */ + ulint heap_no)/* in: the heap number */ +{ + rec_set_bit_field_2(rec, heap_no, REC_OLD_HEAP_NO, + REC_HEAP_NO_MASK, REC_HEAP_NO_SHIFT); +} + +/********************************************************** +The following function is used to get the order number +of a new-style record in the heap of the index page. */ +UNIV_INLINE +ulint +rec_get_heap_no_new( +/*================*/ + /* out: heap order number */ + const rec_t* rec) /* in: physical record */ +{ + return(rec_get_bit_field_2(rec, REC_NEW_HEAP_NO, + REC_HEAP_NO_MASK, REC_HEAP_NO_SHIFT)); +} + +/********************************************************** +The following function is used to set the heap number +field in a new-style record. */ +UNIV_INLINE +void +rec_set_heap_no_new( +/*================*/ + rec_t* rec, /* in/out: physical record */ + ulint heap_no)/* in: the heap number */ +{ + rec_set_bit_field_2(rec, heap_no, REC_NEW_HEAP_NO, + REC_HEAP_NO_MASK, REC_HEAP_NO_SHIFT); +} + +/********************************************************** +The following function is used to test whether the data offsets in the record +are stored in one-byte or two-byte format. */ +UNIV_INLINE +ibool +rec_get_1byte_offs_flag( +/*====================*/ + /* out: TRUE if 1-byte form */ + const rec_t* rec) /* in: physical record */ +{ +#if TRUE != 1 +#error "TRUE != 1" +#endif + + return(rec_get_bit_field_1(rec, REC_OLD_SHORT, REC_OLD_SHORT_MASK, + REC_OLD_SHORT_SHIFT)); +} + +/********************************************************** +The following function is used to set the 1-byte offsets flag. */ +UNIV_INLINE +void +rec_set_1byte_offs_flag( +/*====================*/ + rec_t* rec, /* in: physical record */ + ibool flag) /* in: TRUE if 1byte form */ +{ +#if TRUE != 1 +#error "TRUE != 1" +#endif + ut_ad(flag <= TRUE); + + rec_set_bit_field_1(rec, flag, REC_OLD_SHORT, REC_OLD_SHORT_MASK, + REC_OLD_SHORT_SHIFT); +} + +/********************************************************** +Returns the offset of nth field end if the record is stored in the 1-byte +offsets form. If the field is SQL null, the flag is ORed in the returned +value. */ +UNIV_INLINE +ulint +rec_1_get_field_end_info( +/*=====================*/ + /* out: offset of the start of the + field, SQL null flag ORed */ + const rec_t* rec, /* in: record */ + ulint n) /* in: field index */ +{ + ut_ad(rec_get_1byte_offs_flag(rec)); + ut_ad(n < rec_get_n_fields_old(rec)); + + return(mach_read_from_1(rec - (REC_N_OLD_EXTRA_BYTES + n + 1))); +} + +/********************************************************** +Returns the offset of nth field end if the record is stored in the 2-byte +offsets form. If the field is SQL null, the flag is ORed in the returned +value. */ +UNIV_INLINE +ulint +rec_2_get_field_end_info( +/*=====================*/ + /* out: offset of the start of the + field, SQL null flag and extern + storage flag ORed */ + const rec_t* rec, /* in: record */ + ulint n) /* in: field index */ +{ + ut_ad(!rec_get_1byte_offs_flag(rec)); + ut_ad(n < rec_get_n_fields_old(rec)); + + return(mach_read_from_2(rec - (REC_N_OLD_EXTRA_BYTES + 2 * n + 2))); +} + +/* Get the base address of offsets. The extra_size is stored at +this position, and following positions hold the end offsets of +the fields. */ +#define rec_offs_base(offsets) (offsets + REC_OFFS_HEADER_SIZE) + +/************************************************************** +The following function returns the number of allocated elements +for an array of offsets. */ +UNIV_INLINE +ulint +rec_offs_get_n_alloc( +/*=================*/ + /* out: number of elements */ + const ulint* offsets)/* in: array for rec_get_offsets() */ +{ + ulint n_alloc; + ut_ad(offsets); + n_alloc = offsets[0]; + ut_ad(n_alloc > REC_OFFS_HEADER_SIZE); + UNIV_MEM_ASSERT_W(offsets, n_alloc * sizeof *offsets); + return(n_alloc); +} + +/************************************************************** +The following function sets the number of allocated elements +for an array of offsets. */ +UNIV_INLINE +void +rec_offs_set_n_alloc( +/*=================*/ + ulint* offsets, /* out: array for rec_get_offsets(), + must be allocated */ + ulint n_alloc) /* in: number of elements */ +{ + ut_ad(offsets); + ut_ad(n_alloc > REC_OFFS_HEADER_SIZE); + UNIV_MEM_ASSERT_AND_ALLOC(offsets, n_alloc * sizeof *offsets); + offsets[0] = n_alloc; +} + +/************************************************************** +The following function returns the number of fields in a record. */ +UNIV_INLINE +ulint +rec_offs_n_fields( +/*==============*/ + /* out: number of fields */ + const ulint* offsets)/* in: array returned by rec_get_offsets() */ +{ + ulint n_fields; + ut_ad(offsets); + n_fields = offsets[1]; + ut_ad(n_fields > 0); + ut_ad(n_fields <= REC_MAX_N_FIELDS); + ut_ad(n_fields + REC_OFFS_HEADER_SIZE + <= rec_offs_get_n_alloc(offsets)); + return(n_fields); +} + +/**************************************************************** +Validates offsets returned by rec_get_offsets(). */ +UNIV_INLINE +ibool +rec_offs_validate( +/*==============*/ + /* out: TRUE if valid */ + const rec_t* rec, /* in: record or NULL */ + const dict_index_t* index, /* in: record descriptor or NULL */ + const ulint* offsets)/* in: array returned by + rec_get_offsets() */ +{ + ulint i = rec_offs_n_fields(offsets); + ulint last = ULINT_MAX; + ulint comp = *rec_offs_base(offsets) & REC_OFFS_COMPACT; + + if (rec) { + ut_ad((ulint) rec == offsets[2]); + if (!comp) { + ut_a(rec_get_n_fields_old(rec) >= i); + } + } + if (index) { + ulint max_n_fields; + ut_ad((ulint) index == offsets[3]); + max_n_fields = ut_max( + dict_index_get_n_fields(index), + dict_index_get_n_unique_in_tree(index) + 1); + if (comp && rec) { + switch (rec_get_status(rec)) { + case REC_STATUS_ORDINARY: + break; + case REC_STATUS_NODE_PTR: + max_n_fields = dict_index_get_n_unique_in_tree( + index) + 1; + break; + case REC_STATUS_INFIMUM: + case REC_STATUS_SUPREMUM: + max_n_fields = 1; + break; + default: + ut_error; + } + } + /* index->n_def == 0 for dummy indexes if !comp */ + ut_a(!comp || index->n_def); + ut_a(!index->n_def || i <= max_n_fields); + } + while (i--) { + ulint curr = rec_offs_base(offsets)[1 + i] & REC_OFFS_MASK; + ut_a(curr <= last); + last = curr; + } + return(TRUE); +} +#ifdef UNIV_DEBUG +/**************************************************************** +Updates debug data in offsets, in order to avoid bogus +rec_offs_validate() failures. */ +UNIV_INLINE +void +rec_offs_make_valid( +/*================*/ + const rec_t* rec, /* in: record */ + const dict_index_t* index, /* in: record descriptor */ + ulint* offsets)/* in: array returned by + rec_get_offsets() */ +{ + ut_ad(rec); + ut_ad(index); + ut_ad(offsets); + ut_ad(rec_get_n_fields(rec, index) >= rec_offs_n_fields(offsets)); + offsets[2] = (ulint) rec; + offsets[3] = (ulint) index; +} +#endif /* UNIV_DEBUG */ + +/**************************************************************** +The following function is used to get an offset to the nth +data field in a record. */ +UNIV_INLINE +ulint +rec_get_nth_field_offs( +/*===================*/ + /* out: offset from the origin of rec */ + const ulint* offsets,/* in: array returned by rec_get_offsets() */ + ulint n, /* in: index of the field */ + ulint* len) /* out: length of the field; UNIV_SQL_NULL + if SQL null */ +{ + ulint offs; + ulint length; + ut_ad(n < rec_offs_n_fields(offsets)); + ut_ad(len); + + if (UNIV_UNLIKELY(n == 0)) { + offs = 0; + } else { + offs = rec_offs_base(offsets)[n] & REC_OFFS_MASK; + } + + length = rec_offs_base(offsets)[1 + n]; + + if (length & REC_OFFS_SQL_NULL) { + length = UNIV_SQL_NULL; + } else { + length &= REC_OFFS_MASK; + length -= offs; + } + + *len = length; + return(offs); +} + +/********************************************************** +Determine if the offsets are for a record in the new +compact format. */ +UNIV_INLINE +ulint +rec_offs_comp( +/*==========*/ + /* out: nonzero if compact format */ + const ulint* offsets)/* in: array returned by rec_get_offsets() */ +{ + ut_ad(rec_offs_validate(NULL, NULL, offsets)); + return(*rec_offs_base(offsets) & REC_OFFS_COMPACT); +} + +/********************************************************** +Determine if the offsets are for a record containing +externally stored columns. */ +UNIV_INLINE +ulint +rec_offs_any_extern( +/*================*/ + /* out: nonzero if externally stored */ + const ulint* offsets)/* in: array returned by rec_get_offsets() */ +{ + ut_ad(rec_offs_validate(NULL, NULL, offsets)); + return(UNIV_UNLIKELY(*rec_offs_base(offsets) & REC_OFFS_EXTERNAL)); +} + +/********************************************************** +Returns nonzero if the extern bit is set in nth field of rec. */ +UNIV_INLINE +ulint +rec_offs_nth_extern( +/*================*/ + /* out: nonzero if externally stored */ + const ulint* offsets,/* in: array returned by rec_get_offsets() */ + ulint n) /* in: nth field */ +{ + ut_ad(rec_offs_validate(NULL, NULL, offsets)); + ut_ad(n < rec_offs_n_fields(offsets)); + return(UNIV_UNLIKELY(rec_offs_base(offsets)[1 + n] + & REC_OFFS_EXTERNAL)); +} + +/********************************************************** +Returns nonzero if the SQL NULL bit is set in nth field of rec. */ +UNIV_INLINE +ulint +rec_offs_nth_sql_null( +/*==================*/ + /* out: nonzero if SQL NULL */ + const ulint* offsets,/* in: array returned by rec_get_offsets() */ + ulint n) /* in: nth field */ +{ + ut_ad(rec_offs_validate(NULL, NULL, offsets)); + ut_ad(n < rec_offs_n_fields(offsets)); + return(UNIV_UNLIKELY(rec_offs_base(offsets)[1 + n] + & REC_OFFS_SQL_NULL)); +} + +/********************************************************** +Gets the physical size of a field. */ +UNIV_INLINE +ulint +rec_offs_nth_size( +/*==============*/ + /* out: length of field */ + const ulint* offsets,/* in: array returned by rec_get_offsets() */ + ulint n) /* in: nth field */ +{ + ut_ad(rec_offs_validate(NULL, NULL, offsets)); + ut_ad(n < rec_offs_n_fields(offsets)); + if (!n) { + return(rec_offs_base(offsets)[1 + n] & REC_OFFS_MASK); + } + return((rec_offs_base(offsets)[1 + n] - rec_offs_base(offsets)[n]) + & REC_OFFS_MASK); +} + +/********************************************************** +Returns the number of extern bits set in a record. */ +UNIV_INLINE +ulint +rec_offs_n_extern( +/*==============*/ + /* out: number of externally stored fields */ + const ulint* offsets)/* in: array returned by rec_get_offsets() */ +{ + ulint n = 0; + + if (rec_offs_any_extern(offsets)) { + ulint i; + + for (i = rec_offs_n_fields(offsets); i--; ) { + if (rec_offs_nth_extern(offsets, i)) { + n++; + } + } + } + + return(n); +} + +/********************************************************** +Returns the offset of n - 1th field end if the record is stored in the 1-byte +offsets form. If the field is SQL null, the flag is ORed in the returned +value. This function and the 2-byte counterpart are defined here because the +C-compiler was not able to sum negative and positive constant offsets, and +warned of constant arithmetic overflow within the compiler. */ +UNIV_INLINE +ulint +rec_1_get_prev_field_end_info( +/*==========================*/ + /* out: offset of the start of the + PREVIOUS field, SQL null flag ORed */ + const rec_t* rec, /* in: record */ + ulint n) /* in: field index */ +{ + ut_ad(rec_get_1byte_offs_flag(rec)); + ut_ad(n <= rec_get_n_fields_old(rec)); + + return(mach_read_from_1(rec - (REC_N_OLD_EXTRA_BYTES + n))); +} + +/********************************************************** +Returns the offset of n - 1th field end if the record is stored in the 2-byte +offsets form. If the field is SQL null, the flag is ORed in the returned +value. */ +UNIV_INLINE +ulint +rec_2_get_prev_field_end_info( +/*==========================*/ + /* out: offset of the start of the + PREVIOUS field, SQL null flag ORed */ + const rec_t* rec, /* in: record */ + ulint n) /* in: field index */ +{ + ut_ad(!rec_get_1byte_offs_flag(rec)); + ut_ad(n <= rec_get_n_fields_old(rec)); + + return(mach_read_from_2(rec - (REC_N_OLD_EXTRA_BYTES + 2 * n))); +} + +/********************************************************** +Sets the field end info for the nth field if the record is stored in the +1-byte format. */ +UNIV_INLINE +void +rec_1_set_field_end_info( +/*=====================*/ + rec_t* rec, /* in: record */ + ulint n, /* in: field index */ + ulint info) /* in: value to set */ +{ + ut_ad(rec_get_1byte_offs_flag(rec)); + ut_ad(n < rec_get_n_fields_old(rec)); + + mach_write_to_1(rec - (REC_N_OLD_EXTRA_BYTES + n + 1), info); +} + +/********************************************************** +Sets the field end info for the nth field if the record is stored in the +2-byte format. */ +UNIV_INLINE +void +rec_2_set_field_end_info( +/*=====================*/ + rec_t* rec, /* in: record */ + ulint n, /* in: field index */ + ulint info) /* in: value to set */ +{ + ut_ad(!rec_get_1byte_offs_flag(rec)); + ut_ad(n < rec_get_n_fields_old(rec)); + + mach_write_to_2(rec - (REC_N_OLD_EXTRA_BYTES + 2 * n + 2), info); +} + +/********************************************************** +Returns the offset of nth field start if the record is stored in the 1-byte +offsets form. */ +UNIV_INLINE +ulint +rec_1_get_field_start_offs( +/*=======================*/ + /* out: offset of the start of the field */ + const rec_t* rec, /* in: record */ + ulint n) /* in: field index */ +{ + ut_ad(rec_get_1byte_offs_flag(rec)); + ut_ad(n <= rec_get_n_fields_old(rec)); + + if (n == 0) { + + return(0); + } + + return(rec_1_get_prev_field_end_info(rec, n) + & ~REC_1BYTE_SQL_NULL_MASK); +} + +/********************************************************** +Returns the offset of nth field start if the record is stored in the 2-byte +offsets form. */ +UNIV_INLINE +ulint +rec_2_get_field_start_offs( +/*=======================*/ + /* out: offset of the start of the field */ + const rec_t* rec, /* in: record */ + ulint n) /* in: field index */ +{ + ut_ad(!rec_get_1byte_offs_flag(rec)); + ut_ad(n <= rec_get_n_fields_old(rec)); + + if (n == 0) { + + return(0); + } + + return(rec_2_get_prev_field_end_info(rec, n) + & ~(REC_2BYTE_SQL_NULL_MASK | REC_2BYTE_EXTERN_MASK)); +} + +/********************************************************** +The following function is used to read the offset of the start of a data field +in the record. The start of an SQL null field is the end offset of the +previous non-null field, or 0, if none exists. If n is the number of the last +field + 1, then the end offset of the last field is returned. */ +UNIV_INLINE +ulint +rec_get_field_start_offs( +/*=====================*/ + /* out: offset of the start of the field */ + const rec_t* rec, /* in: record */ + ulint n) /* in: field index */ +{ + ut_ad(rec); + ut_ad(n <= rec_get_n_fields_old(rec)); + + if (n == 0) { + + return(0); + } + + if (rec_get_1byte_offs_flag(rec)) { + + return(rec_1_get_field_start_offs(rec, n)); + } + + return(rec_2_get_field_start_offs(rec, n)); +} + +/**************************************************************** +Gets the physical size of an old-style field. +Also an SQL null may have a field of size > 0, +if the data type is of a fixed size. */ +UNIV_INLINE +ulint +rec_get_nth_field_size( +/*===================*/ + /* out: field size in bytes */ + const rec_t* rec, /* in: record */ + ulint n) /* in: index of the field */ +{ + ulint os; + ulint next_os; + + os = rec_get_field_start_offs(rec, n); + next_os = rec_get_field_start_offs(rec, n + 1); + + ut_ad(next_os - os < UNIV_PAGE_SIZE); + + return(next_os - os); +} + +/*************************************************************** +This is used to modify the value of an already existing field in a record. +The previous value must have exactly the same size as the new value. If len +is UNIV_SQL_NULL then the field is treated as an SQL null. +For records in ROW_FORMAT=COMPACT (new-style records), len must not be +UNIV_SQL_NULL unless the field already is SQL null. */ +UNIV_INLINE +void +rec_set_nth_field( +/*==============*/ + rec_t* rec, /* in: record */ + const ulint* offsets,/* in: array returned by rec_get_offsets() */ + ulint n, /* in: index number of the field */ + const void* data, /* in: pointer to the data + if not SQL null */ + ulint len) /* in: length of the data or UNIV_SQL_NULL */ +{ + byte* data2; + ulint len2; + + ut_ad(rec); + ut_ad(rec_offs_validate(rec, NULL, offsets)); + + if (UNIV_UNLIKELY(len == UNIV_SQL_NULL)) { + if (!rec_offs_nth_sql_null(offsets, n)) { + ut_a(!rec_offs_comp(offsets)); + rec_set_nth_field_sql_null(rec, n); + } + + return; + } + + data2 = rec_get_nth_field(rec, offsets, n, &len2); + if (len2 == UNIV_SQL_NULL) { + ut_ad(!rec_offs_comp(offsets)); + rec_set_nth_field_null_bit(rec, n, FALSE); + ut_ad(len == rec_get_nth_field_size(rec, n)); + } else { + ut_ad(len2 == len); + } + + ut_memcpy(data2, data, len); +} + +/************************************************************** +The following function returns the data size of an old-style physical +record, that is the sum of field lengths. SQL null fields +are counted as length 0 fields. The value returned by the function +is the distance from record origin to record end in bytes. */ +UNIV_INLINE +ulint +rec_get_data_size_old( +/*==================*/ + /* out: size */ + const rec_t* rec) /* in: physical record */ +{ + ut_ad(rec); + + return(rec_get_field_start_offs(rec, rec_get_n_fields_old(rec))); +} + +/************************************************************** +The following function sets the number of fields in offsets. */ +UNIV_INLINE +void +rec_offs_set_n_fields( +/*==================*/ + ulint* offsets, /* in/out: array returned by + rec_get_offsets() */ + ulint n_fields) /* in: number of fields */ +{ + ut_ad(offsets); + ut_ad(n_fields > 0); + ut_ad(n_fields <= REC_MAX_N_FIELDS); + ut_ad(n_fields + REC_OFFS_HEADER_SIZE + <= rec_offs_get_n_alloc(offsets)); + offsets[1] = n_fields; +} + +/************************************************************** +The following function returns the data size of a physical +record, that is the sum of field lengths. SQL null fields +are counted as length 0 fields. The value returned by the function +is the distance from record origin to record end in bytes. */ +UNIV_INLINE +ulint +rec_offs_data_size( +/*===============*/ + /* out: size */ + const ulint* offsets)/* in: array returned by rec_get_offsets() */ +{ + ulint size; + + ut_ad(rec_offs_validate(NULL, NULL, offsets)); + size = rec_offs_base(offsets)[rec_offs_n_fields(offsets)] + & REC_OFFS_MASK; + ut_ad(size < UNIV_PAGE_SIZE); + return(size); +} + +/************************************************************** +Returns the total size of record minus data size of record. The value +returned by the function is the distance from record start to record origin +in bytes. */ +UNIV_INLINE +ulint +rec_offs_extra_size( +/*================*/ + /* out: size */ + const ulint* offsets)/* in: array returned by rec_get_offsets() */ +{ + ulint size; + ut_ad(rec_offs_validate(NULL, NULL, offsets)); + size = *rec_offs_base(offsets) & ~(REC_OFFS_COMPACT | REC_OFFS_EXTERNAL); + ut_ad(size < UNIV_PAGE_SIZE); + return(size); +} + +/************************************************************** +Returns the total size of a physical record. */ +UNIV_INLINE +ulint +rec_offs_size( +/*==========*/ + /* out: size */ + const ulint* offsets)/* in: array returned by rec_get_offsets() */ +{ + return(rec_offs_data_size(offsets) + rec_offs_extra_size(offsets)); +} + +/************************************************************** +Returns a pointer to the end of the record. */ +UNIV_INLINE +byte* +rec_get_end( +/*========*/ + /* out: pointer to end */ + rec_t* rec, /* in: pointer to record */ + const ulint* offsets)/* in: array returned by rec_get_offsets() */ +{ + ut_ad(rec_offs_validate(rec, NULL, offsets)); + return(rec + rec_offs_data_size(offsets)); +} + +/************************************************************** +Returns a pointer to the start of the record. */ +UNIV_INLINE +byte* +rec_get_start( +/*==========*/ + /* out: pointer to start */ + rec_t* rec, /* in: pointer to record */ + const ulint* offsets)/* in: array returned by rec_get_offsets() */ +{ + ut_ad(rec_offs_validate(rec, NULL, offsets)); + return(rec - rec_offs_extra_size(offsets)); +} + +/******************************************************************* +Copies a physical record to a buffer. */ +UNIV_INLINE +rec_t* +rec_copy( +/*=====*/ + /* out: pointer to the origin of the copy */ + void* buf, /* in: buffer */ + const rec_t* rec, /* in: physical record */ + const ulint* offsets)/* in: array returned by rec_get_offsets() */ +{ + ulint extra_len; + ulint data_len; + + ut_ad(rec && buf); + ut_ad(rec_offs_validate((rec_t*) rec, NULL, offsets)); + ut_ad(rec_validate(rec, offsets)); + + extra_len = rec_offs_extra_size(offsets); + data_len = rec_offs_data_size(offsets); + + ut_memcpy(buf, rec - extra_len, extra_len + data_len); + + return((byte*)buf + extra_len); +} + +/************************************************************** +Returns the extra size of an old-style physical record if we know its +data size and number of fields. */ +UNIV_INLINE +ulint +rec_get_converted_extra_size( +/*=========================*/ + /* out: extra size */ + ulint data_size, /* in: data size */ + ulint n_fields, /* in: number of fields */ + ulint n_ext) /* in: number of externally stored columns */ +{ + if (!n_ext && data_size <= REC_1BYTE_OFFS_LIMIT) { + + return(REC_N_OLD_EXTRA_BYTES + n_fields); + } + + return(REC_N_OLD_EXTRA_BYTES + 2 * n_fields); +} + +/************************************************************** +The following function returns the size of a data tuple when converted to +a physical record. */ +UNIV_INLINE +ulint +rec_get_converted_size( +/*===================*/ + /* out: size */ + dict_index_t* index, /* in: record descriptor */ + const dtuple_t* dtuple, /* in: data tuple */ + ulint n_ext) /* in: number of externally stored columns */ +{ + ulint data_size; + ulint extra_size; + + ut_ad(index); + ut_ad(dtuple); + ut_ad(dtuple_check_typed(dtuple)); + + ut_ad(index->type & DICT_UNIVERSAL + || dtuple_get_n_fields(dtuple) + == (((dtuple_get_info_bits(dtuple) & REC_NEW_STATUS_MASK) + == REC_STATUS_NODE_PTR) + ? dict_index_get_n_unique_in_tree(index) + 1 + : dict_index_get_n_fields(index))); + + if (dict_table_is_comp(index->table)) { + return(rec_get_converted_size_comp(index, + dtuple_get_info_bits(dtuple) + & REC_NEW_STATUS_MASK, + dtuple->fields, + dtuple->n_fields, NULL)); + } + + data_size = dtuple_get_data_size(dtuple); + + extra_size = rec_get_converted_extra_size( + data_size, dtuple_get_n_fields(dtuple), n_ext); + + return(data_size + extra_size); +} + +/**************************************************************** +Folds a prefix of a physical record to a ulint. Folds only existing fields, +that is, checks that we do not run out of the record. */ +UNIV_INLINE +ulint +rec_fold( +/*=====*/ + /* out: the folded value */ + const rec_t* rec, /* in: the physical record */ + const ulint* offsets, /* in: array returned by + rec_get_offsets() */ + ulint n_fields, /* in: number of complete + fields to fold */ + ulint n_bytes, /* in: number of bytes to fold + in an incomplete last field */ + dulint tree_id) /* in: index tree id */ +{ + ulint i; + const byte* data; + ulint len; + ulint fold; + ulint n_fields_rec; + + ut_ad(rec_offs_validate(rec, NULL, offsets)); + ut_ad(rec_validate(rec, offsets)); + ut_ad(n_fields + n_bytes > 0); + + n_fields_rec = rec_offs_n_fields(offsets); + ut_ad(n_fields <= n_fields_rec); + ut_ad(n_fields < n_fields_rec || n_bytes == 0); + + if (n_fields > n_fields_rec) { + n_fields = n_fields_rec; + } + + if (n_fields == n_fields_rec) { + n_bytes = 0; + } + + fold = ut_fold_dulint(tree_id); + + for (i = 0; i < n_fields; i++) { + data = rec_get_nth_field(rec, offsets, i, &len); + + if (len != UNIV_SQL_NULL) { + fold = ut_fold_ulint_pair(fold, + ut_fold_binary(data, len)); + } + } + + if (n_bytes > 0) { + data = rec_get_nth_field(rec, offsets, i, &len); + + if (len != UNIV_SQL_NULL) { + if (len > n_bytes) { + len = n_bytes; + } + + fold = ut_fold_ulint_pair(fold, + ut_fold_binary(data, len)); + } + } + + return(fold); +} === added file 'storage/xtradb/include/rem0types.h' --- a/storage/xtradb/include/rem0types.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/rem0types.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,45 @@ +/***************************************************************************** + +Copyright (c) 1994, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/************************************************************************ +Record manager global types + +Created 5/30/1994 Heikki Tuuri +*************************************************************************/ + +#ifndef rem0types_h +#define rem0types_h + +/* We define the physical record simply as an array of bytes */ +typedef byte rec_t; + +/* Maximum values for various fields (for non-blob tuples) */ +#define REC_MAX_N_FIELDS (1024 - 1) +#define REC_MAX_HEAP_NO (2 * 8192 - 1) +#define REC_MAX_N_OWNED (16 - 1) + +/* REC_MAX_INDEX_COL_LEN is measured in bytes and is the maximum +indexed column length (or indexed prefix length). It is set to 3*256, +so that one can create a column prefix index on 256 characters of a +TEXT or VARCHAR column also in the UTF-8 charset. In that charset, +a character may take at most 3 bytes. +This constant MUST NOT BE CHANGED, or the compatibility of InnoDB data +files would be at risk! */ +#define REC_MAX_INDEX_COL_LEN 768 + +#endif === added file 'storage/xtradb/include/row0ext.h' --- a/storage/xtradb/include/row0ext.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/row0ext.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,98 @@ +/***************************************************************************** + +Copyright (c) 2006, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Caching of externally stored column prefixes + +Created September 2006 Marko Makela +*******************************************************/ + +#ifndef row0ext_h +#define row0ext_h + +#include "univ.i" +#include "row0types.h" +#include "data0types.h" +#include "mem0mem.h" + +/************************************************************************ +Creates a cache of column prefixes of externally stored columns. */ +UNIV_INTERN +row_ext_t* +row_ext_create( +/*===========*/ + /* out,own: column prefix cache */ + ulint n_ext, /* in: number of externally stored columns */ + const ulint* ext, /* in: col_no's of externally stored columns + in the InnoDB table object, as reported by + dict_col_get_no(); NOT relative to the records + in the clustered index */ + const dtuple_t* tuple, /* in: data tuple containing the field + references of the externally stored + columns; must be indexed by col_no; + the clustered index record must be + covered by a lock or a page latch + to prevent deletion (rollback or purge). */ + ulint zip_size,/* compressed page size in bytes, or 0 */ + mem_heap_t* heap); /* in: heap where created */ + +/************************************************************************ +Looks up a column prefix of an externally stored column. */ +UNIV_INLINE +const byte* +row_ext_lookup_ith( +/*===============*/ + /* out: column prefix, or NULL if + the column is not stored externally, + or pointer to field_ref_zero + if the BLOB pointer is unset */ + const row_ext_t* ext, /* in/out: column prefix cache */ + ulint i, /* in: index of ext->ext[] */ + ulint* len); /* out: length of prefix, in bytes, + at most REC_MAX_INDEX_COL_LEN */ +/************************************************************************ +Looks up a column prefix of an externally stored column. */ +UNIV_INLINE +const byte* +row_ext_lookup( +/*===========*/ + /* out: column prefix, or NULL if + the column is not stored externally, + or pointer to field_ref_zero + if the BLOB pointer is unset */ + const row_ext_t* ext, /* in: column prefix cache */ + ulint col, /* in: column number in the InnoDB + table object, as reported by + dict_col_get_no(); NOT relative to the + records in the clustered index */ + ulint* len); /* out: length of prefix, in bytes, + at most REC_MAX_INDEX_COL_LEN */ + +/* Prefixes of externally stored columns */ +struct row_ext_struct{ + ulint n_ext; /* number of externally stored columns */ + const ulint* ext; /* col_no's of externally stored columns */ + byte* buf; /* backing store of the column prefix cache */ + ulint len[1]; /* prefix lengths; 0 if not cached */ +}; + +#ifndef UNIV_NONINL +#include "row0ext.ic" +#endif + +#endif === added file 'storage/xtradb/include/row0ext.ic' --- a/storage/xtradb/include/row0ext.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/row0ext.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,87 @@ +/***************************************************************************** + +Copyright (c) 2006, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Caching of externally stored column prefixes + +Created September 2006 Marko Makela +*******************************************************/ + +#include "rem0types.h" +#include "btr0types.h" + +/************************************************************************ +Looks up a column prefix of an externally stored column. */ +UNIV_INLINE +const byte* +row_ext_lookup_ith( +/*===============*/ + /* out: column prefix, or NULL if + the column is not stored externally, + or pointer to field_ref_zero + if the BLOB pointer is unset */ + const row_ext_t* ext, /* in/out: column prefix cache */ + ulint i, /* in: index of ext->ext[] */ + ulint* len) /* out: length of prefix, in bytes, + at most REC_MAX_INDEX_COL_LEN */ +{ + ut_ad(ext); + ut_ad(len); + ut_ad(i < ext->n_ext); + + *len = ext->len[i]; + + if (UNIV_UNLIKELY(*len == 0)) { + /* The BLOB could not be fetched to the cache. */ + return(field_ref_zero); + } else { + return(ext->buf + i * REC_MAX_INDEX_COL_LEN); + } +} + +/************************************************************************ +Looks up a column prefix of an externally stored column. */ +UNIV_INLINE +const byte* +row_ext_lookup( +/*===========*/ + /* out: column prefix, or NULL if + the column is not stored externally, + or pointer to field_ref_zero + if the BLOB pointer is unset */ + const row_ext_t* ext, /* in: column prefix cache */ + ulint col, /* in: column number in the InnoDB + table object, as reported by + dict_col_get_no(); NOT relative to the + records in the clustered index */ + ulint* len) /* out: length of prefix, in bytes, + at most REC_MAX_INDEX_COL_LEN */ +{ + ulint i; + + ut_ad(ext); + ut_ad(len); + + for (i = 0; i < ext->n_ext; i++) { + if (col == ext->ext[i]) { + return(row_ext_lookup_ith(ext, i, len)); + } + } + + return(NULL); +} === added file 'storage/xtradb/include/row0ins.h' --- a/storage/xtradb/include/row0ins.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/row0ins.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,157 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Insert into a table + +Created 4/20/1996 Heikki Tuuri +*******************************************************/ + +#ifndef row0ins_h +#define row0ins_h + +#include "univ.i" +#include "data0data.h" +#include "que0types.h" +#include "dict0types.h" +#include "trx0types.h" +#include "row0types.h" + +/******************************************************************* +Checks if foreign key constraint fails for an index entry. Sets shared locks +which lock either the success or the failure of the constraint. NOTE that +the caller must have a shared latch on dict_foreign_key_check_lock. */ +UNIV_INTERN +ulint +row_ins_check_foreign_constraint( +/*=============================*/ + /* out: DB_SUCCESS, DB_LOCK_WAIT, + DB_NO_REFERENCED_ROW, + or DB_ROW_IS_REFERENCED */ + ibool check_ref,/* in: TRUE If we want to check that + the referenced table is ok, FALSE if we + want to to check the foreign key table */ + dict_foreign_t* foreign,/* in: foreign constraint; NOTE that the + tables mentioned in it must be in the + dictionary cache if they exist at all */ + dict_table_t* table, /* in: if check_ref is TRUE, then the foreign + table, else the referenced table */ + dtuple_t* entry, /* in: index entry for index */ + que_thr_t* thr); /* in: query thread */ +/************************************************************************* +Creates an insert node struct. */ +UNIV_INTERN +ins_node_t* +ins_node_create( +/*============*/ + /* out, own: insert node struct */ + ulint ins_type, /* in: INS_VALUES, ... */ + dict_table_t* table, /* in: table where to insert */ + mem_heap_t* heap); /* in: mem heap where created */ +/************************************************************************* +Sets a new row to insert for an INS_DIRECT node. This function is only used +if we have constructed the row separately, which is a rare case; this +function is quite slow. */ +UNIV_INTERN +void +ins_node_set_new_row( +/*=================*/ + ins_node_t* node, /* in: insert node */ + dtuple_t* row); /* in: new row (or first row) for the node */ +/******************************************************************* +Inserts an index entry to index. Tries first optimistic, then pessimistic +descent down the tree. If the entry matches enough to a delete marked record, +performs the insert by updating or delete unmarking the delete marked +record. */ +UNIV_INTERN +ulint +row_ins_index_entry( +/*================*/ + /* out: DB_SUCCESS, DB_LOCK_WAIT, + DB_DUPLICATE_KEY, or some other error code */ + dict_index_t* index, /* in: index */ + dtuple_t* entry, /* in: index entry to insert */ + ulint n_ext, /* in: number of externally stored columns */ + ibool foreign,/* in: TRUE=check foreign key constraints */ + que_thr_t* thr); /* in: query thread */ +/*************************************************************** +Inserts a row to a table. This is a high-level function used in +SQL execution graphs. */ +UNIV_INTERN +que_thr_t* +row_ins_step( +/*=========*/ + /* out: query thread to run next or NULL */ + que_thr_t* thr); /* in: query thread */ +/*************************************************************** +Creates an entry template for each index of a table. */ +UNIV_INTERN +void +ins_node_create_entry_list( +/*=======================*/ + ins_node_t* node); /* in: row insert node */ + +/* Insert node structure */ + +struct ins_node_struct{ + que_common_t common; /* node type: QUE_NODE_INSERT */ + ulint ins_type;/* INS_VALUES, INS_SEARCHED, or INS_DIRECT */ + dtuple_t* row; /* row to insert */ + dict_table_t* table; /* table where to insert */ + sel_node_t* select; /* select in searched insert */ + que_node_t* values_list;/* list of expressions to evaluate and + insert in an INS_VALUES insert */ + ulint state; /* node execution state */ + dict_index_t* index; /* NULL, or the next index where the index + entry should be inserted */ + dtuple_t* entry; /* NULL, or entry to insert in the index; + after a successful insert of the entry, + this should be reset to NULL */ + UT_LIST_BASE_NODE_T(dtuple_t) + entry_list;/* list of entries, one for each index */ + byte* row_id_buf;/* buffer for the row id sys field in row */ + dulint trx_id; /* trx id or the last trx which executed the + node */ + byte* trx_id_buf;/* buffer for the trx id sys field in row */ + mem_heap_t* entry_sys_heap; + /* memory heap used as auxiliary storage; + entry_list and sys fields are stored here; + if this is NULL, entry list should be created + and buffers for sys fields in row allocated */ + ulint magic_n; +}; + +#define INS_NODE_MAGIC_N 15849075 + +/* Insert node types */ +#define INS_SEARCHED 0 /* INSERT INTO ... SELECT ... */ +#define INS_VALUES 1 /* INSERT INTO ... VALUES ... */ +#define INS_DIRECT 2 /* this is for internal use in dict0crea: + insert the row directly */ + +/* Node execution states */ +#define INS_NODE_SET_IX_LOCK 1 /* we should set an IX lock on table */ +#define INS_NODE_ALLOC_ROW_ID 2 /* row id should be allocated */ +#define INS_NODE_INSERT_ENTRIES 3 /* index entries should be built and + inserted */ + +#ifndef UNIV_NONINL +#include "row0ins.ic" +#endif + +#endif === added file 'storage/xtradb/include/row0ins.ic' --- a/storage/xtradb/include/row0ins.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/row0ins.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,25 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Insert into a table + +Created 4/20/1996 Heikki Tuuri +*******************************************************/ + + === added file 'storage/xtradb/include/row0merge.h' --- a/storage/xtradb/include/row0merge.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/row0merge.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,198 @@ +/***************************************************************************** + +Copyright (c) 2005, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Index build routines using a merge sort + +Created 13/06/2005 Jan Lindstrom +*******************************************************/ + +#ifndef row0merge_h +#define row0merge_h + +#include "univ.i" +#include "data0data.h" +#include "dict0types.h" +#include "trx0types.h" +#include "que0types.h" +#include "mtr0mtr.h" +#include "rem0types.h" +#include "rem0rec.h" +#include "read0types.h" +#include "btr0types.h" +#include "row0mysql.h" +#include "lock0types.h" + +/* This structure holds index field definitions */ + +struct merge_index_field_struct { + ulint prefix_len; /* Prefix len */ + const char* field_name; /* Field name */ +}; + +typedef struct merge_index_field_struct merge_index_field_t; + +/* This structure holds index definitions */ + +struct merge_index_def_struct { + const char* name; /* Index name */ + ulint ind_type; /* 0, DICT_UNIQUE, + or DICT_CLUSTERED */ + ulint n_fields; /* Number of fields in index */ + merge_index_field_t* fields; /* Field definitions */ +}; + +typedef struct merge_index_def_struct merge_index_def_t; + +/************************************************************************* +Sets an exclusive lock on a table, for the duration of creating indexes. */ +UNIV_INTERN +ulint +row_merge_lock_table( +/*=================*/ + /* out: error code or DB_SUCCESS */ + trx_t* trx, /* in/out: transaction */ + dict_table_t* table, /* in: table to lock */ + enum lock_mode mode); /* in: LOCK_X or LOCK_S */ +/************************************************************************* +Drop an index from the InnoDB system tables. The data dictionary must +have been locked exclusively by the caller, because the transaction +will not be committed. */ +UNIV_INTERN +void +row_merge_drop_index( +/*=================*/ + dict_index_t* index, /* in: index to be removed */ + dict_table_t* table, /* in: table */ + trx_t* trx); /* in: transaction handle */ +/************************************************************************* +Drop those indexes which were created before an error occurred when +building an index. The data dictionary must have been locked +exclusively by the caller, because the transaction will not be +committed. */ +UNIV_INTERN +void +row_merge_drop_indexes( +/*===================*/ + trx_t* trx, /* in: transaction */ + dict_table_t* table, /* in: table containing the indexes */ + dict_index_t** index, /* in: indexes to drop */ + ulint num_created); /* in: number of elements in index[] */ +/************************************************************************* +Drop all partially created indexes during crash recovery. */ +UNIV_INTERN +void +row_merge_drop_temp_indexes(void); +/*=============================*/ +/************************************************************************* +Rename the tables in the data dictionary. The data dictionary must +have been locked exclusively by the caller, because the transaction +will not be committed. */ +UNIV_INTERN +ulint +row_merge_rename_tables( +/*====================*/ + /* out: error code or DB_SUCCESS */ + dict_table_t* old_table, /* in/out: old table, renamed to + tmp_name */ + dict_table_t* new_table, /* in/out: new table, renamed to + old_table->name */ + const char* tmp_name, /* in: new name for old_table */ + trx_t* trx); /* in: transaction handle */ + +/************************************************************************* +Create a temporary table for creating a primary key, using the definition +of an existing table. */ +UNIV_INTERN +dict_table_t* +row_merge_create_temporary_table( +/*=============================*/ + /* out: table, + or NULL on error */ + const char* table_name, /* in: new table name */ + const merge_index_def_t*index_def, /* in: the index definition + of the primary key */ + const dict_table_t* table, /* in: old table definition */ + trx_t* trx); /* in/out: transaction + (sets error_state) */ +/************************************************************************* +Rename the temporary indexes in the dictionary to permanent ones. The +data dictionary must have been locked exclusively by the caller, +because the transaction will not be committed. */ +UNIV_INTERN +ulint +row_merge_rename_indexes( +/*=====================*/ + /* out: DB_SUCCESS if all OK */ + trx_t* trx, /* in/out: transaction */ + dict_table_t* table); /* in/out: table with new indexes */ +/************************************************************************* +Create the index and load in to the dictionary. */ +UNIV_INTERN +dict_index_t* +row_merge_create_index( +/*===================*/ + /* out: index, or NULL on error */ + trx_t* trx, /* in/out: trx (sets error_state) */ + dict_table_t* table, /* in: the index is on this table */ + const merge_index_def_t* /* in: the index definition */ + index_def); +#ifdef ROW_MERGE_IS_INDEX_USABLE +/************************************************************************* +Check if a transaction can use an index. */ +UNIV_INTERN +ibool +row_merge_is_index_usable( +/*======================*/ + /* out: TRUE if index can be used by + the transaction else FALSE*/ + const trx_t* trx, /* in: transaction */ + const dict_index_t* index); /* in: index to check */ +#endif /* ROW_MERGE_IS_INDEX_USABLE */ +/************************************************************************* +If there are views that refer to the old table name then we "attach" to +the new instance of the table else we drop it immediately. */ +UNIV_INTERN +ulint +row_merge_drop_table( +/*=================*/ + /* out: DB_SUCCESS or error code */ + trx_t* trx, /* in: transaction */ + dict_table_t* table); /* in: table instance to drop */ + +/************************************************************************* +Build indexes on a table by reading a clustered index, +creating a temporary file containing index entries, merge sorting +these index entries and inserting sorted index entries to indexes. */ +UNIV_INTERN +ulint +row_merge_build_indexes( +/*====================*/ + /* out: DB_SUCCESS or error code */ + trx_t* trx, /* in: transaction */ + dict_table_t* old_table, /* in: table where rows are + read from */ + dict_table_t* new_table, /* in: table where indexes are + created; identical to old_table + unless creating a PRIMARY KEY */ + dict_index_t** indexes, /* in: indexes to be created */ + ulint n_indexes, /* in: size of indexes[] */ + TABLE* table); /* in/out: MySQL table, for + reporting erroneous key value + if applicable */ +#endif /* row0merge.h */ === added file 'storage/xtradb/include/row0mysql.h' --- a/storage/xtradb/include/row0mysql.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/row0mysql.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,769 @@ +/***************************************************************************** + +Copyright (c) 2000, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Interface between Innobase row operations and MySQL. +Contains also create table and other data dictionary operations. + +Created 9/17/2000 Heikki Tuuri +*******************************************************/ + +#ifndef row0mysql_h +#define row0mysql_h + +#include "univ.i" +#include "data0data.h" +#include "que0types.h" +#include "dict0types.h" +#include "trx0types.h" +#include "row0types.h" +#include "btr0pcur.h" +#include "trx0types.h" + +extern ibool row_rollback_on_timeout; + +typedef struct row_prebuilt_struct row_prebuilt_t; + +/*********************************************************************** +Frees the blob heap in prebuilt when no longer needed. */ +UNIV_INTERN +void +row_mysql_prebuilt_free_blob_heap( +/*==============================*/ + row_prebuilt_t* prebuilt); /* in: prebuilt struct of a + ha_innobase:: table handle */ +/*********************************************************************** +Stores a >= 5.0.3 format true VARCHAR length to dest, in the MySQL row +format. */ +UNIV_INTERN +byte* +row_mysql_store_true_var_len( +/*=========================*/ + /* out: pointer to the data, we skip the 1 or 2 bytes + at the start that are used to store the len */ + byte* dest, /* in: where to store */ + ulint len, /* in: length, must fit in two bytes */ + ulint lenlen);/* in: storage length of len: either 1 or 2 bytes */ +/*********************************************************************** +Reads a >= 5.0.3 format true VARCHAR length, in the MySQL row format, and +returns a pointer to the data. */ + +const byte* +row_mysql_read_true_varchar( +/*========================*/ + /* out: pointer to the data, we skip + the 1 or 2 bytes at the start that are + used to store the len */ + ulint* len, /* out: variable-length field length */ + const byte* field, /* in: field in the MySQL format */ + ulint lenlen);/* in: storage length of len: either 1 + or 2 bytes */ +/*********************************************************************** +Stores a reference to a BLOB in the MySQL format. */ +UNIV_INTERN +void +row_mysql_store_blob_ref( +/*=====================*/ + byte* dest, /* in: where to store */ + ulint col_len,/* in: dest buffer size: determines into + how many bytes the BLOB length is stored, + the space for the length may vary from 1 + to 4 bytes */ + const void* data, /* in: BLOB data; if the value to store + is SQL NULL this should be NULL pointer */ + ulint len); /* in: BLOB length; if the value to store + is SQL NULL this should be 0; remember + also to set the NULL bit in the MySQL record + header! */ +/*********************************************************************** +Reads a reference to a BLOB in the MySQL format. */ + +const byte* +row_mysql_read_blob_ref( +/*====================*/ + /* out: pointer to BLOB data */ + ulint* len, /* out: BLOB length */ + const byte* ref, /* in: BLOB reference in the + MySQL format */ + ulint col_len); /* in: BLOB reference length + (not BLOB length) */ +/****************************************************************** +Stores a non-SQL-NULL field given in the MySQL format in the InnoDB format. +The counterpart of this function is row_sel_field_store_in_mysql_format() in +row0sel.c. */ +UNIV_INTERN +byte* +row_mysql_store_col_in_innobase_format( +/*===================================*/ + /* out: up to which byte we used + buf in the conversion */ + dfield_t* dfield, /* in/out: dfield where dtype + information must be already set when + this function is called! */ + byte* buf, /* in/out: buffer for a converted + integer value; this must be at least + col_len long then! */ + ibool row_format_col, /* TRUE if the mysql_data is from + a MySQL row, FALSE if from a MySQL + key value; + in MySQL, a true VARCHAR storage + format differs in a row and in a + key value: in a key value the length + is always stored in 2 bytes! */ + const byte* mysql_data, /* in: MySQL column value, not + SQL NULL; NOTE that dfield may also + get a pointer to mysql_data, + therefore do not discard this as long + as dfield is used! */ + ulint col_len, /* in: MySQL column length; NOTE that + this is the storage length of the + column in the MySQL format row, not + necessarily the length of the actual + payload data; if the column is a true + VARCHAR then this is irrelevant */ + ulint comp); /* in: nonzero=compact format */ +/******************************************************************** +Handles user errors and lock waits detected by the database engine. */ +UNIV_INTERN +ibool +row_mysql_handle_errors( +/*====================*/ + /* out: TRUE if it was a lock wait and + we should continue running the query thread */ + ulint* new_err,/* out: possible new error encountered in + rollback, or the old error which was + during the function entry */ + trx_t* trx, /* in: transaction */ + que_thr_t* thr, /* in: query thread */ + trx_savept_t* savept);/* in: savepoint */ +/************************************************************************ +Create a prebuilt struct for a MySQL table handle. */ +UNIV_INTERN +row_prebuilt_t* +row_create_prebuilt( +/*================*/ + /* out, own: a prebuilt struct */ + dict_table_t* table); /* in: Innobase table handle */ +/************************************************************************ +Free a prebuilt struct for a MySQL table handle. */ +UNIV_INTERN +void +row_prebuilt_free( +/*==============*/ + row_prebuilt_t* prebuilt, /* in, own: prebuilt struct */ + ibool dict_locked); /* in: TRUE=data dictionary locked */ +/************************************************************************* +Updates the transaction pointers in query graphs stored in the prebuilt +struct. */ +UNIV_INTERN +void +row_update_prebuilt_trx( +/*====================*/ + /* out: prebuilt dtuple */ + row_prebuilt_t* prebuilt, /* in: prebuilt struct in MySQL + handle */ + trx_t* trx); /* in: transaction handle */ +/************************************************************************* +Unlocks AUTO_INC type locks that were possibly reserved by a trx. */ +UNIV_INTERN +void +row_unlock_table_autoinc_for_mysql( +/*===============================*/ + trx_t* trx); /* in/out: transaction */ +/************************************************************************* +Sets an AUTO_INC type lock on the table mentioned in prebuilt. The +AUTO_INC lock gives exclusive access to the auto-inc counter of the +table. The lock is reserved only for the duration of an SQL statement. +It is not compatible with another AUTO_INC or exclusive lock on the +table. */ +UNIV_INTERN +int +row_lock_table_autoinc_for_mysql( +/*=============================*/ + /* out: error code or DB_SUCCESS */ + row_prebuilt_t* prebuilt); /* in: prebuilt struct in the MySQL + table handle */ +/************************************************************************* +Sets a table lock on the table mentioned in prebuilt. */ +UNIV_INTERN +int +row_lock_table_for_mysql( +/*=====================*/ + /* out: error code or DB_SUCCESS */ + row_prebuilt_t* prebuilt, /* in: prebuilt struct in the MySQL + table handle */ + dict_table_t* table, /* in: table to lock, or NULL + if prebuilt->table should be + locked as + prebuilt->select_lock_type */ + ulint mode); /* in: lock mode of table + (ignored if table==NULL) */ + +/************************************************************************* +Does an insert for MySQL. */ +UNIV_INTERN +int +row_insert_for_mysql( +/*=================*/ + /* out: error code or DB_SUCCESS */ + byte* mysql_rec, /* in: row in the MySQL format */ + row_prebuilt_t* prebuilt); /* in: prebuilt struct in MySQL + handle */ +/************************************************************************* +Builds a dummy query graph used in selects. */ +UNIV_INTERN +void +row_prebuild_sel_graph( +/*===================*/ + row_prebuilt_t* prebuilt); /* in: prebuilt struct in MySQL + handle */ +/************************************************************************* +Gets pointer to a prebuilt update vector used in updates. If the update +graph has not yet been built in the prebuilt struct, then this function +first builds it. */ +UNIV_INTERN +upd_t* +row_get_prebuilt_update_vector( +/*===========================*/ + /* out: prebuilt update vector */ + row_prebuilt_t* prebuilt); /* in: prebuilt struct in MySQL + handle */ +/************************************************************************* +Checks if a table is such that we automatically created a clustered +index on it (on row id). */ +UNIV_INTERN +ibool +row_table_got_default_clust_index( +/*==============================*/ + const dict_table_t* table); +/************************************************************************* +Calculates the key number used inside MySQL for an Innobase index. We have +to take into account if we generated a default clustered index for the table */ +UNIV_INTERN +ulint +row_get_mysql_key_number_for_index( +/*===============================*/ + const dict_index_t* index); +/************************************************************************* +Does an update or delete of a row for MySQL. */ +UNIV_INTERN +int +row_update_for_mysql( +/*=================*/ + /* out: error code or DB_SUCCESS */ + byte* mysql_rec, /* in: the row to be updated, in + the MySQL format */ + row_prebuilt_t* prebuilt); /* in: prebuilt struct in MySQL + handle */ +/************************************************************************* +This can only be used when srv_locks_unsafe_for_binlog is TRUE or +session is using a READ COMMITTED isolation level. Before +calling this function we must use trx_reset_new_rec_lock_info() and +trx_register_new_rec_lock() to store the information which new record locks +really were set. This function removes a newly set lock under prebuilt->pcur, +and also under prebuilt->clust_pcur. Currently, this is only used and tested +in the case of an UPDATE or a DELETE statement, where the row lock is of the +LOCK_X type. +Thus, this implements a 'mini-rollback' that releases the latest record +locks we set. */ +UNIV_INTERN +int +row_unlock_for_mysql( +/*=================*/ + /* out: error code or DB_SUCCESS */ + row_prebuilt_t* prebuilt, /* in: prebuilt struct in MySQL + handle */ + ibool has_latches_on_recs);/* TRUE if called so that we have + the latches on the records under pcur + and clust_pcur, and we do not need to + reposition the cursors. */ +/************************************************************************* +Creates an query graph node of 'update' type to be used in the MySQL +interface. */ +UNIV_INTERN +upd_node_t* +row_create_update_node_for_mysql( +/*=============================*/ + /* out, own: update node */ + dict_table_t* table, /* in: table to update */ + mem_heap_t* heap); /* in: mem heap from which allocated */ +/************************************************************************** +Does a cascaded delete or set null in a foreign key operation. */ +UNIV_INTERN +ulint +row_update_cascade_for_mysql( +/*=========================*/ + /* out: error code or DB_SUCCESS */ + que_thr_t* thr, /* in: query thread */ + upd_node_t* node, /* in: update node used in the cascade + or set null operation */ + dict_table_t* table); /* in: table where we do the operation */ +/************************************************************************* +Locks the data dictionary exclusively for performing a table create or other +data dictionary modification operation. */ +UNIV_INTERN +void +row_mysql_lock_data_dictionary_func( +/*================================*/ + trx_t* trx, /* in/out: transaction */ + const char* file, /* in: file name */ + ulint line); /* in: line number */ +#define row_mysql_lock_data_dictionary(trx) \ + row_mysql_lock_data_dictionary_func(trx, __FILE__, __LINE__) +/************************************************************************* +Unlocks the data dictionary exclusive lock. */ +UNIV_INTERN +void +row_mysql_unlock_data_dictionary( +/*=============================*/ + trx_t* trx); /* in/out: transaction */ +/************************************************************************* +Locks the data dictionary in shared mode from modifications, for performing +foreign key check, rollback, or other operation invisible to MySQL. */ +UNIV_INTERN +void +row_mysql_freeze_data_dictionary_func( +/*==================================*/ + trx_t* trx, /* in/out: transaction */ + const char* file, /* in: file name */ + ulint line); /* in: line number */ +#define row_mysql_freeze_data_dictionary(trx) \ + row_mysql_freeze_data_dictionary_func(trx, __FILE__, __LINE__) +/************************************************************************* +Unlocks the data dictionary shared lock. */ +UNIV_INTERN +void +row_mysql_unfreeze_data_dictionary( +/*===============================*/ + trx_t* trx); /* in/out: transaction */ +#ifndef UNIV_HOTBACKUP +/************************************************************************* +Creates a table for MySQL. If the name of the table ends in +one of "innodb_monitor", "innodb_lock_monitor", "innodb_tablespace_monitor", +"innodb_table_monitor", then this will also start the printing of monitor +output by the master thread. If the table name ends in "innodb_mem_validate", +InnoDB will try to invoke mem_validate(). */ +UNIV_INTERN +int +row_create_table_for_mysql( +/*=======================*/ + /* out: error code or DB_SUCCESS */ + dict_table_t* table, /* in, own: table definition + (will be freed) */ + trx_t* trx); /* in: transaction handle */ +/************************************************************************* +Does an index creation operation for MySQL. TODO: currently failure +to create an index results in dropping the whole table! This is no problem +currently as all indexes must be created at the same time as the table. */ +UNIV_INTERN +int +row_create_index_for_mysql( +/*=======================*/ + /* out: error number or DB_SUCCESS */ + dict_index_t* index, /* in, own: index definition + (will be freed) */ + trx_t* trx, /* in: transaction handle */ + const ulint* field_lengths); /* in: if not NULL, must contain + dict_index_get_n_fields(index) + actual field lengths for the + index columns, which are + then checked for not being too + large. */ +/************************************************************************* +Scans a table create SQL string and adds to the data dictionary +the foreign key constraints declared in the string. This function +should be called after the indexes for a table have been created. +Each foreign key constraint must be accompanied with indexes in +bot participating tables. The indexes are allowed to contain more +fields than mentioned in the constraint. */ +UNIV_INTERN +int +row_table_add_foreign_constraints( +/*==============================*/ + /* out: error code or DB_SUCCESS */ + trx_t* trx, /* in: transaction */ + const char* sql_string, /* in: table create statement where + foreign keys are declared like: + FOREIGN KEY (a, b) REFERENCES table2(c, d), + table2 can be written also with the + database name before it: test.table2 */ + const char* name, /* in: table full name in the + normalized form + database_name/table_name */ + ibool reject_fks); /* in: if TRUE, fail with error + code DB_CANNOT_ADD_CONSTRAINT if + any foreign keys are found. */ + +/************************************************************************* +The master thread in srv0srv.c calls this regularly to drop tables which +we must drop in background after queries to them have ended. Such lazy +dropping of tables is needed in ALTER TABLE on Unix. */ +UNIV_INTERN +ulint +row_drop_tables_for_mysql_in_background(void); +/*=========================================*/ + /* out: how many tables dropped + + remaining tables in list */ +/************************************************************************* +Get the background drop list length. NOTE: the caller must own the kernel +mutex! */ +UNIV_INTERN +ulint +row_get_background_drop_list_len_low(void); +/*======================================*/ + /* out: how many tables in list */ +/************************************************************************* +Truncates a table for MySQL. */ +UNIV_INTERN +int +row_truncate_table_for_mysql( +/*=========================*/ + /* out: error code or DB_SUCCESS */ + dict_table_t* table, /* in: table handle */ + trx_t* trx); /* in: transaction handle */ +/************************************************************************* +Drops a table for MySQL. If the name of the dropped table ends in +one of "innodb_monitor", "innodb_lock_monitor", "innodb_tablespace_monitor", +"innodb_table_monitor", then this will also stop the printing of monitor +output by the master thread. If the data dictionary was not already locked +by the transaction, the transaction will be committed. Otherwise, the +data dictionary will remain locked. */ +UNIV_INTERN +int +row_drop_table_for_mysql( +/*=====================*/ + /* out: error code or DB_SUCCESS */ + const char* name, /* in: table name */ + trx_t* trx, /* in: transaction handle */ + ibool drop_db);/* in: TRUE=dropping whole database */ + +/************************************************************************* +Discards the tablespace of a table which stored in an .ibd file. Discarding +means that this function deletes the .ibd file and assigns a new table id for +the table. Also the flag table->ibd_file_missing is set TRUE. */ +UNIV_INTERN +int +row_discard_tablespace_for_mysql( +/*=============================*/ + /* out: error code or DB_SUCCESS */ + const char* name, /* in: table name */ + trx_t* trx); /* in: transaction handle */ +/********************************************************************* +Imports a tablespace. The space id in the .ibd file must match the space id +of the table in the data dictionary. */ +UNIV_INTERN +int +row_import_tablespace_for_mysql( +/*============================*/ + /* out: error code or DB_SUCCESS */ + const char* name, /* in: table name */ + trx_t* trx); /* in: transaction handle */ +/************************************************************************* +Drops a database for MySQL. */ +UNIV_INTERN +int +row_drop_database_for_mysql( +/*========================*/ + /* out: error code or DB_SUCCESS */ + const char* name, /* in: database name which ends to '/' */ + trx_t* trx); /* in: transaction handle */ +/************************************************************************* +Renames a table for MySQL. */ +UNIV_INTERN +ulint +row_rename_table_for_mysql( +/*=======================*/ + /* out: error code or DB_SUCCESS */ + const char* old_name, /* in: old table name */ + const char* new_name, /* in: new table name */ + trx_t* trx, /* in: transaction handle */ + ibool commit); /* in: if TRUE then commit trx */ +/************************************************************************* +Checks a table for corruption. */ +UNIV_INTERN +ulint +row_check_table_for_mysql( +/*======================*/ + /* out: DB_ERROR or DB_SUCCESS */ + row_prebuilt_t* prebuilt); /* in: prebuilt struct in MySQL + handle */ +#endif /* !UNIV_HOTBACKUP */ + +/************************************************************************* +Determines if a table is a magic monitor table. */ +UNIV_INTERN +ibool +row_is_magic_monitor_table( +/*=======================*/ + /* out: TRUE if monitor table */ + const char* table_name); /* in: name of the table, in the + form database/table_name */ + +/* A struct describing a place for an individual column in the MySQL +row format which is presented to the table handler in ha_innobase. +This template struct is used to speed up row transformations between +Innobase and MySQL. */ + +typedef struct mysql_row_templ_struct mysql_row_templ_t; +struct mysql_row_templ_struct { + ulint col_no; /* column number of the column */ + ulint rec_field_no; /* field number of the column in an + Innobase record in the current index; + not defined if template_type is + ROW_MYSQL_WHOLE_ROW */ + ulint mysql_col_offset; /* offset of the column in the MySQL + row format */ + ulint mysql_col_len; /* length of the column in the MySQL + row format */ + ulint mysql_null_byte_offset; /* MySQL NULL bit byte offset in a + MySQL record */ + ulint mysql_null_bit_mask; /* bit mask to get the NULL bit, + zero if column cannot be NULL */ + ulint type; /* column type in Innobase mtype + numbers DATA_CHAR... */ + ulint mysql_type; /* MySQL type code; this is always + < 256 */ + ulint mysql_length_bytes; /* if mysql_type + == DATA_MYSQL_TRUE_VARCHAR, this tells + whether we should use 1 or 2 bytes to + store the MySQL true VARCHAR data + length at the start of row in the MySQL + format (NOTE that the MySQL key value + format always uses 2 bytes for the data + len) */ + ulint charset; /* MySQL charset-collation code + of the column, or zero */ + ulint mbminlen; /* minimum length of a char, in bytes, + or zero if not a char type */ + ulint mbmaxlen; /* maximum length of a char, in bytes, + or zero if not a char type */ + ulint is_unsigned; /* if a column type is an integer + type and this field is != 0, then + it is an unsigned integer type */ +}; + +#define MYSQL_FETCH_CACHE_SIZE 8 +/* After fetching this many rows, we start caching them in fetch_cache */ +#define MYSQL_FETCH_CACHE_THRESHOLD 4 + +#define ROW_PREBUILT_ALLOCATED 78540783 +#define ROW_PREBUILT_FREED 26423527 + +/* A struct for (sometimes lazily) prebuilt structures in an Innobase table +handle used within MySQL; these are used to save CPU time. */ + +struct row_prebuilt_struct { + ulint magic_n; /* this magic number is set to + ROW_PREBUILT_ALLOCATED when created, + or ROW_PREBUILT_FREED when the + struct has been freed */ + dict_table_t* table; /* Innobase table handle */ + trx_t* trx; /* current transaction handle */ + ibool sql_stat_start; /* TRUE when we start processing of + an SQL statement: we may have to set + an intention lock on the table, + create a consistent read view etc. */ + ibool mysql_has_locked; /* this is set TRUE when MySQL + calls external_lock on this handle + with a lock flag, and set FALSE when + with the F_UNLOCK flag */ + ibool clust_index_was_generated; + /* if the user did not define a + primary key in MySQL, then Innobase + automatically generated a clustered + index where the ordering column is + the row id: in this case this flag + is set to TRUE */ + dict_index_t* index; /* current index for a search, if + any */ + ulint read_just_key; /* set to 1 when MySQL calls + ha_innobase::extra with the + argument HA_EXTRA_KEYREAD; it is enough + to read just columns defined in + the index (i.e., no read of the + clustered index record necessary) */ + ibool used_in_HANDLER;/* TRUE if we have been using this + handle in a MySQL HANDLER low level + index cursor command: then we must + store the pcur position even in a + unique search from a clustered index, + because HANDLER allows NEXT and PREV + in such a situation */ + ulint template_type; /* ROW_MYSQL_WHOLE_ROW, + ROW_MYSQL_REC_FIELDS, + ROW_MYSQL_DUMMY_TEMPLATE, or + ROW_MYSQL_NO_TEMPLATE */ + ulint n_template; /* number of elements in the + template */ + ulint null_bitmap_len;/* number of bytes in the SQL NULL + bitmap at the start of a row in the + MySQL format */ + ibool need_to_access_clustered; /* if we are fetching + columns through a secondary index + and at least one column is not in + the secondary index, then this is + set to TRUE */ + ibool templ_contains_blob;/* TRUE if the template contains + BLOB column(s) */ + mysql_row_templ_t* mysql_template;/* template used to transform + rows fast between MySQL and Innobase + formats; memory for this template + is not allocated from 'heap' */ + mem_heap_t* heap; /* memory heap from which + these auxiliary structures are + allocated when needed */ + ins_node_t* ins_node; /* Innobase SQL insert node + used to perform inserts + to the table */ + byte* ins_upd_rec_buff;/* buffer for storing data converted + to the Innobase format from the MySQL + format */ + const byte* default_rec; /* the default values of all columns + (a "default row") in MySQL format */ + ulint hint_need_to_fetch_extra_cols; + /* normally this is set to 0; if this + is set to ROW_RETRIEVE_PRIMARY_KEY, + then we should at least retrieve all + columns in the primary key; if this + is set to ROW_RETRIEVE_ALL_COLS, then + we must retrieve all columns in the + key (if read_just_key == 1), or all + columns in the table */ + upd_node_t* upd_node; /* Innobase SQL update node used + to perform updates and deletes */ + que_fork_t* ins_graph; /* Innobase SQL query graph used + in inserts */ + que_fork_t* upd_graph; /* Innobase SQL query graph used + in updates or deletes */ + btr_pcur_t* pcur; /* persistent cursor used in selects + and updates */ + btr_pcur_t* clust_pcur; /* persistent cursor used in + some selects and updates */ + que_fork_t* sel_graph; /* dummy query graph used in + selects */ + dtuple_t* search_tuple; /* prebuilt dtuple used in selects */ + byte row_id[DATA_ROW_ID_LEN]; + /* if the clustered index was + generated, the row id of the + last row fetched is stored + here */ + dtuple_t* clust_ref; /* prebuilt dtuple used in + sel/upd/del */ + ulint select_lock_type;/* LOCK_NONE, LOCK_S, or LOCK_X */ + ulint stored_select_lock_type;/* this field is used to + remember the original select_lock_type + that was decided in ha_innodb.cc, + ::store_lock(), ::external_lock(), + etc. */ + ulint row_read_type; /* ROW_READ_WITH_LOCKS if row locks + should be the obtained for records + under an UPDATE or DELETE cursor. + If innodb_locks_unsafe_for_binlog + is TRUE, this can be set to + ROW_READ_TRY_SEMI_CONSISTENT, so that + if the row under an UPDATE or DELETE + cursor was locked by another + transaction, InnoDB will resort + to reading the last committed value + ('semi-consistent read'). Then, + this field will be set to + ROW_READ_DID_SEMI_CONSISTENT to + indicate that. If the row does not + match the WHERE condition, MySQL will + invoke handler::unlock_row() to + clear the flag back to + ROW_READ_TRY_SEMI_CONSISTENT and + to simply skip the row. If + the row matches, the next call to + row_search_for_mysql() will lock + the row. + This eliminates lock waits in some + cases; note that this breaks + serializability. */ + ulint mysql_prefix_len;/* byte offset of the end of + the last requested column */ + ulint mysql_row_len; /* length in bytes of a row in the + MySQL format */ + ulint n_rows_fetched; /* number of rows fetched after + positioning the current cursor */ + ulint fetch_direction;/* ROW_SEL_NEXT or ROW_SEL_PREV */ + byte* fetch_cache[MYSQL_FETCH_CACHE_SIZE]; + /* a cache for fetched rows if we + fetch many rows from the same cursor: + it saves CPU time to fetch them in a + batch; we reserve mysql_row_len + bytes for each such row; these + pointers point 4 bytes past the + allocated mem buf start, because + there is a 4 byte magic number at the + start and at the end */ + ibool keep_other_fields_on_keyread; /* when using fetch + cache with HA_EXTRA_KEYREAD, don't + overwrite other fields in mysql row + row buffer.*/ + ulint fetch_cache_first;/* position of the first not yet + fetched row in fetch_cache */ + ulint n_fetch_cached; /* number of not yet fetched rows + in fetch_cache */ + mem_heap_t* blob_heap; /* in SELECTS BLOB fields are copied + to this heap */ + mem_heap_t* old_vers_heap; /* memory heap where a previous + version is built in consistent read */ + /*----------------------*/ + ulonglong autoinc_last_value;/* last value of AUTO-INC interval */ + ulonglong autoinc_increment;/* The increment step of the auto + increment column. Value must be + greater than or equal to 1. Required to + calculate the next value */ + ulonglong autoinc_offset; /* The offset passed to + get_auto_increment() by MySQL. Required + to calculate the next value */ + ulint autoinc_error; /* The actual error code encountered + while trying to init or read the + autoinc value from the table. We + store it here so that we can return + it to MySQL */ + /*----------------------*/ + UT_LIST_NODE_T(row_prebuilt_t) prebuilts; + /* list node of table->prebuilts */ + ulint magic_n2; /* this should be the same as + magic_n */ +}; + +#define ROW_PREBUILT_FETCH_MAGIC_N 465765687 + +#define ROW_MYSQL_WHOLE_ROW 0 +#define ROW_MYSQL_REC_FIELDS 1 +#define ROW_MYSQL_NO_TEMPLATE 2 +#define ROW_MYSQL_DUMMY_TEMPLATE 3 /* dummy template used in + row_scan_and_check_index */ + +/* Values for hint_need_to_fetch_extra_cols */ +#define ROW_RETRIEVE_PRIMARY_KEY 1 +#define ROW_RETRIEVE_ALL_COLS 2 + +/* Values for row_read_type */ +#define ROW_READ_WITH_LOCKS 0 +#define ROW_READ_TRY_SEMI_CONSISTENT 1 +#define ROW_READ_DID_SEMI_CONSISTENT 2 + +#ifndef UNIV_NONINL +#include "row0mysql.ic" +#endif + +#endif === added file 'storage/xtradb/include/row0mysql.ic' --- a/storage/xtradb/include/row0mysql.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/row0mysql.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,23 @@ +/***************************************************************************** + +Copyright (c) 2001, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +MySQL interface for Innobase + +Created 1/23/2001 Heikki Tuuri +*******************************************************/ === added file 'storage/xtradb/include/row0purge.h' --- a/storage/xtradb/include/row0purge.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/row0purge.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,95 @@ +/***************************************************************************** + +Copyright (c) 1997, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Purge obsolete records + +Created 3/14/1997 Heikki Tuuri +*******************************************************/ + +#ifndef row0purge_h +#define row0purge_h + +#include "univ.i" +#include "data0data.h" +#include "btr0types.h" +#include "btr0pcur.h" +#include "dict0types.h" +#include "trx0types.h" +#include "que0types.h" +#include "row0types.h" + +/************************************************************************ +Creates a purge node to a query graph. */ +UNIV_INTERN +purge_node_t* +row_purge_node_create( +/*==================*/ + /* out, own: purge node */ + que_thr_t* parent, /* in: parent node, i.e., a thr node */ + mem_heap_t* heap); /* in: memory heap where created */ +/*************************************************************** +Does the purge operation for a single undo log record. This is a high-level +function used in an SQL execution graph. */ +UNIV_INTERN +que_thr_t* +row_purge_step( +/*===========*/ + /* out: query thread to run next or NULL */ + que_thr_t* thr); /* in: query thread */ + +/* Purge node structure */ + +struct purge_node_struct{ + que_common_t common; /* node type: QUE_NODE_PURGE */ + /*----------------------*/ + /* Local storage for this graph node */ + dulint roll_ptr;/* roll pointer to undo log record */ + trx_undo_rec_t* undo_rec;/* undo log record */ + trx_undo_inf_t* reservation;/* reservation for the undo log record in + the purge array */ + dulint undo_no;/* undo number of the record */ + ulint rec_type;/* undo log record type: TRX_UNDO_INSERT_REC, + ... */ + btr_pcur_t pcur; /* persistent cursor used in searching the + clustered index record */ + ibool found_clust;/* TRUE if the clustered index record + determined by ref was found in the clustered + index, and we were able to position pcur on + it */ + dict_table_t* table; /* table where purge is done */ + ulint cmpl_info;/* compiler analysis info of an update */ + upd_t* update; /* update vector for a clustered index + record */ + dtuple_t* ref; /* NULL, or row reference to the next row to + handle */ + dtuple_t* row; /* NULL, or a copy (also fields copied to + heap) of the indexed fields of the row to + handle */ + dict_index_t* index; /* NULL, or the next index whose record should + be handled */ + mem_heap_t* heap; /* memory heap used as auxiliary storage for + row; this must be emptied after a successful + purge of a row */ +}; + +#ifndef UNIV_NONINL +#include "row0purge.ic" +#endif + +#endif === added file 'storage/xtradb/include/row0purge.ic' --- a/storage/xtradb/include/row0purge.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/row0purge.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,24 @@ +/***************************************************************************** + +Copyright (c) 1997, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + + +/****************************************************** +Purge obsolete records + +Created 3/14/1997 Heikki Tuuri +*******************************************************/ === added file 'storage/xtradb/include/row0row.h' --- a/storage/xtradb/include/row0row.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/row0row.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,331 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +General row routines + +Created 4/20/1996 Heikki Tuuri +*******************************************************/ + +#ifndef row0row_h +#define row0row_h + +#include "univ.i" +#include "data0data.h" +#include "dict0types.h" +#include "trx0types.h" +#include "que0types.h" +#include "mtr0mtr.h" +#include "rem0types.h" +#include "read0types.h" +#include "row0types.h" +#include "btr0types.h" + +/************************************************************************* +Gets the offset of the trx id field, in bytes relative to the origin of +a clustered index record. */ +UNIV_INTERN +ulint +row_get_trx_id_offset( +/*==================*/ + /* out: offset of DATA_TRX_ID */ + const rec_t* rec, /* in: record */ + dict_index_t* index, /* in: clustered index */ + const ulint* offsets);/* in: rec_get_offsets(rec, index) */ +/************************************************************************* +Reads the trx id field from a clustered index record. */ +UNIV_INLINE +dulint +row_get_rec_trx_id( +/*===============*/ + /* out: value of the field */ + const rec_t* rec, /* in: record */ + dict_index_t* index, /* in: clustered index */ + const ulint* offsets);/* in: rec_get_offsets(rec, index) */ +/************************************************************************* +Reads the roll pointer field from a clustered index record. */ +UNIV_INLINE +dulint +row_get_rec_roll_ptr( +/*=================*/ + /* out: value of the field */ + const rec_t* rec, /* in: record */ + dict_index_t* index, /* in: clustered index */ + const ulint* offsets);/* in: rec_get_offsets(rec, index) */ +/********************************************************************* +When an insert or purge to a table is performed, this function builds +the entry to be inserted into or purged from an index on the table. */ +UNIV_INTERN +dtuple_t* +row_build_index_entry( +/*==================*/ + /* out: index entry which should be + inserted or purged, or NULL if the + externally stored columns in the + clustered index record are unavailable + and ext != NULL */ + const dtuple_t* row, /* in: row which should be + inserted or purged */ + row_ext_t* ext, /* in: externally stored column prefixes, + or NULL */ + dict_index_t* index, /* in: index on the table */ + mem_heap_t* heap); /* in: memory heap from which the memory for + the index entry is allocated */ +/*********************************************************************** +An inverse function to row_build_index_entry. Builds a row from a +record in a clustered index. */ +UNIV_INTERN +dtuple_t* +row_build( +/*======*/ + /* out, own: row built; + see the NOTE below! */ + ulint type, /* in: ROW_COPY_POINTERS or + ROW_COPY_DATA; the latter + copies also the data fields to + heap while the first only + places pointers to data fields + on the index page, and thus is + more efficient */ + const dict_index_t* index, /* in: clustered index */ + const rec_t* rec, /* in: record in the clustered + index; NOTE: in the case + ROW_COPY_POINTERS the data + fields in the row will point + directly into this record, + therefore, the buffer page of + this record must be at least + s-latched and the latch held + as long as the row dtuple is used! */ + const ulint* offsets,/* in: rec_get_offsets(rec,index) + or NULL, in which case this function + will invoke rec_get_offsets() */ + const dict_table_t* col_table, + /* in: table, to check which + externally stored columns + occur in the ordering columns + of an index, or NULL if + index->table should be + consulted instead; the user + columns in this table should be + the same columns as in index->table */ + row_ext_t** ext, /* out, own: cache of + externally stored column + prefixes, or NULL */ + mem_heap_t* heap); /* in: memory heap from which + the memory needed is allocated */ +/*********************************************************************** +Converts an index record to a typed data tuple. */ +UNIV_INTERN +dtuple_t* +row_rec_to_index_entry_low( +/*=======================*/ + /* out: index entry built; does not + set info_bits, and the data fields in + the entry will point directly to rec */ + const rec_t* rec, /* in: record in the index */ + const dict_index_t* index, /* in: index */ + const ulint* offsets,/* in: rec_get_offsets(rec, index) */ + ulint* n_ext, /* out: number of externally + stored columns */ + mem_heap_t* heap); /* in: memory heap from which + the memory needed is allocated */ +/*********************************************************************** +Converts an index record to a typed data tuple. NOTE that externally +stored (often big) fields are NOT copied to heap. */ +UNIV_INTERN +dtuple_t* +row_rec_to_index_entry( +/*===================*/ + /* out, own: index entry + built; see the NOTE below! */ + ulint type, /* in: ROW_COPY_DATA, or + ROW_COPY_POINTERS: the former + copies also the data fields to + heap as the latter only places + pointers to data fields on the + index page */ + const rec_t* rec, /* in: record in the index; + NOTE: in the case + ROW_COPY_POINTERS the data + fields in the row will point + directly into this record, + therefore, the buffer page of + this record must be at least + s-latched and the latch held + as long as the dtuple is used! */ + const dict_index_t* index, /* in: index */ + ulint* offsets,/* in/out: rec_get_offsets(rec) */ + ulint* n_ext, /* out: number of externally + stored columns */ + mem_heap_t* heap); /* in: memory heap from which + the memory needed is allocated */ +/*********************************************************************** +Builds from a secondary index record a row reference with which we can +search the clustered index record. */ +UNIV_INTERN +dtuple_t* +row_build_row_ref( +/*==============*/ + /* out, own: row reference built; see the + NOTE below! */ + ulint type, /* in: ROW_COPY_DATA, or ROW_COPY_POINTERS: + the former copies also the data fields to + heap, whereas the latter only places pointers + to data fields on the index page */ + dict_index_t* index, /* in: secondary index */ + const rec_t* rec, /* in: record in the index; + NOTE: in the case ROW_COPY_POINTERS + the data fields in the row will point + directly into this record, therefore, + the buffer page of this record must be + at least s-latched and the latch held + as long as the row reference is used! */ + mem_heap_t* heap); /* in: memory heap from which the memory + needed is allocated */ +/*********************************************************************** +Builds from a secondary index record a row reference with which we can +search the clustered index record. */ +UNIV_INTERN +void +row_build_row_ref_in_tuple( +/*=======================*/ + dtuple_t* ref, /* in/out: row reference built; + see the NOTE below! */ + const rec_t* rec, /* in: record in the index; + NOTE: the data fields in ref + will point directly into this + record, therefore, the buffer + page of this record must be at + least s-latched and the latch + held as long as the row + reference is used! */ + const dict_index_t* index, /* in: secondary index */ + ulint* offsets,/* in: rec_get_offsets(rec, index) + or NULL */ + trx_t* trx); /* in: transaction */ +/*********************************************************************** +From a row build a row reference with which we can search the clustered +index record. */ +UNIV_INTERN +void +row_build_row_ref_from_row( +/*=======================*/ + dtuple_t* ref, /* in/out: row reference built; + see the NOTE below! + ref must have the right number + of fields! */ + const dict_table_t* table, /* in: table */ + const dtuple_t* row); /* in: row + NOTE: the data fields in ref will point + directly into data of this row */ +/*********************************************************************** +Builds from a secondary index record a row reference with which we can +search the clustered index record. */ +UNIV_INLINE +void +row_build_row_ref_fast( +/*===================*/ + dtuple_t* ref, /* in/out: typed data tuple where the + reference is built */ + const ulint* map, /* in: array of field numbers in rec + telling how ref should be built from + the fields of rec */ + const rec_t* rec, /* in: record in the index; must be + preserved while ref is used, as we do + not copy field values to heap */ + const ulint* offsets);/* in: array returned by rec_get_offsets() */ +/******************************************************************* +Searches the clustered index record for a row, if we have the row +reference. */ +UNIV_INTERN +ibool +row_search_on_row_ref( +/*==================*/ + /* out: TRUE if found */ + btr_pcur_t* pcur, /* out: persistent cursor, which must + be closed by the caller */ + ulint mode, /* in: BTR_MODIFY_LEAF, ... */ + const dict_table_t* table, /* in: table */ + const dtuple_t* ref, /* in: row reference */ + mtr_t* mtr); /* in/out: mtr */ +/************************************************************************* +Fetches the clustered index record for a secondary index record. The latches +on the secondary index record are preserved. */ +UNIV_INTERN +rec_t* +row_get_clust_rec( +/*==============*/ + /* out: record or NULL, if no record found */ + ulint mode, /* in: BTR_MODIFY_LEAF, ... */ + const rec_t* rec, /* in: record in a secondary index */ + dict_index_t* index, /* in: secondary index */ + dict_index_t** clust_index,/* out: clustered index */ + mtr_t* mtr); /* in: mtr */ +/******************************************************************* +Searches an index record. */ +UNIV_INTERN +ibool +row_search_index_entry( +/*===================*/ + /* out: TRUE if found */ + dict_index_t* index, /* in: index */ + const dtuple_t* entry, /* in: index entry */ + ulint mode, /* in: BTR_MODIFY_LEAF, ... */ + btr_pcur_t* pcur, /* in/out: persistent cursor, which must + be closed by the caller */ + mtr_t* mtr); /* in: mtr */ + + +#define ROW_COPY_DATA 1 +#define ROW_COPY_POINTERS 2 + +/* The allowed latching order of index records is the following: +(1) a secondary index record -> +(2) the clustered index record -> +(3) rollback segment data for the clustered index record. + +No new latches may be obtained while the kernel mutex is reserved. +However, the kernel mutex can be reserved while latches are owned. */ + +/*********************************************************************** +Formats the raw data in "data" (in InnoDB on-disk format) using +"dict_field" and writes the result to "buf". +Not more than "buf_size" bytes are written to "buf". +The result is always '\0'-terminated (provided buf_size > 0) and the +number of bytes that were written to "buf" is returned (including the +terminating '\0'). */ +UNIV_INTERN +ulint +row_raw_format( +/*===========*/ + /* out: number of bytes + that were written */ + const char* data, /* in: raw data */ + ulint data_len, /* in: raw data length + in bytes */ + const dict_field_t* dict_field, /* in: index field */ + char* buf, /* out: output buffer */ + ulint buf_size); /* in: output buffer size + in bytes */ + +#ifndef UNIV_NONINL +#include "row0row.ic" +#endif + +#endif === added file 'storage/xtradb/include/row0row.ic' --- a/storage/xtradb/include/row0row.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/row0row.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,119 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +General row routines + +Created 4/20/1996 Heikki Tuuri +*******************************************************/ + +#include "dict0dict.h" +#include "rem0rec.h" +#include "trx0undo.h" + +/************************************************************************* +Reads the trx id field from a clustered index record. */ +UNIV_INLINE +dulint +row_get_rec_trx_id( +/*===============*/ + /* out: value of the field */ + const rec_t* rec, /* in: record */ + dict_index_t* index, /* in: clustered index */ + const ulint* offsets)/* in: rec_get_offsets(rec, index) */ +{ + ulint offset; + + ut_ad(dict_index_is_clust(index)); + ut_ad(rec_offs_validate(rec, index, offsets)); + + offset = index->trx_id_offset; + + if (!offset) { + offset = row_get_trx_id_offset(rec, index, offsets); + } + + return(trx_read_trx_id(rec + offset)); +} + +/************************************************************************* +Reads the roll pointer field from a clustered index record. */ +UNIV_INLINE +dulint +row_get_rec_roll_ptr( +/*=================*/ + /* out: value of the field */ + const rec_t* rec, /* in: record */ + dict_index_t* index, /* in: clustered index */ + const ulint* offsets)/* in: rec_get_offsets(rec, index) */ +{ + ulint offset; + + ut_ad(dict_index_is_clust(index)); + ut_ad(rec_offs_validate(rec, index, offsets)); + + offset = index->trx_id_offset; + + if (!offset) { + offset = row_get_trx_id_offset(rec, index, offsets); + } + + return(trx_read_roll_ptr(rec + offset + DATA_TRX_ID_LEN)); +} + +/*********************************************************************** +Builds from a secondary index record a row reference with which we can +search the clustered index record. */ +UNIV_INLINE +void +row_build_row_ref_fast( +/*===================*/ + dtuple_t* ref, /* in/out: typed data tuple where the + reference is built */ + const ulint* map, /* in: array of field numbers in rec + telling how ref should be built from + the fields of rec */ + const rec_t* rec, /* in: record in the index; must be + preserved while ref is used, as we do + not copy field values to heap */ + const ulint* offsets)/* in: array returned by rec_get_offsets() */ +{ + dfield_t* dfield; + const byte* field; + ulint len; + ulint ref_len; + ulint field_no; + ulint i; + + ut_ad(rec_offs_validate(rec, NULL, offsets)); + ut_ad(!rec_offs_any_extern(offsets)); + ref_len = dtuple_get_n_fields(ref); + + for (i = 0; i < ref_len; i++) { + dfield = dtuple_get_nth_field(ref, i); + + field_no = *(map + i); + + if (field_no != ULINT_UNDEFINED) { + + field = rec_get_nth_field(rec, offsets, + field_no, &len); + dfield_set_data(dfield, field, len); + } + } +} === added file 'storage/xtradb/include/row0sel.h' --- a/storage/xtradb/include/row0sel.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/row0sel.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,401 @@ +/***************************************************************************** + +Copyright (c) 1997, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Select + +Created 12/19/1997 Heikki Tuuri +*******************************************************/ + +#ifndef row0sel_h +#define row0sel_h + +#include "univ.i" +#include "data0data.h" +#include "que0types.h" +#include "dict0types.h" +#include "trx0types.h" +#include "row0types.h" +#include "que0types.h" +#include "pars0sym.h" +#include "btr0pcur.h" +#include "read0read.h" +#include "row0mysql.h" + +/************************************************************************* +Creates a select node struct. */ +UNIV_INTERN +sel_node_t* +sel_node_create( +/*============*/ + /* out, own: select node struct */ + mem_heap_t* heap); /* in: memory heap where created */ +/************************************************************************* +Frees the memory private to a select node when a query graph is freed, +does not free the heap where the node was originally created. */ +UNIV_INTERN +void +sel_node_free_private( +/*==================*/ + sel_node_t* node); /* in: select node struct */ +/************************************************************************* +Frees a prefetch buffer for a column, including the dynamically allocated +memory for data stored there. */ +UNIV_INTERN +void +sel_col_prefetch_buf_free( +/*======================*/ + sel_buf_t* prefetch_buf); /* in, own: prefetch buffer */ +/************************************************************************* +Gets the plan node for the nth table in a join. */ +UNIV_INLINE +plan_t* +sel_node_get_nth_plan( +/*==================*/ + sel_node_t* node, + ulint i); +/************************************************************************** +Performs a select step. This is a high-level function used in SQL execution +graphs. */ +UNIV_INTERN +que_thr_t* +row_sel_step( +/*=========*/ + /* out: query thread to run next or NULL */ + que_thr_t* thr); /* in: query thread */ +/************************************************************************** +Performs an execution step of an open or close cursor statement node. */ +UNIV_INLINE +que_thr_t* +open_step( +/*======*/ + /* out: query thread to run next or NULL */ + que_thr_t* thr); /* in: query thread */ +/************************************************************************** +Performs a fetch for a cursor. */ +UNIV_INTERN +que_thr_t* +fetch_step( +/*=======*/ + /* out: query thread to run next or NULL */ + que_thr_t* thr); /* in: query thread */ +/******************************************************************** +Sample callback function for fetch that prints each row.*/ +UNIV_INTERN +void* +row_fetch_print( +/*============*/ + /* out: always returns non-NULL */ + void* row, /* in: sel_node_t* */ + void* user_arg); /* in: not used */ +/******************************************************************** +Callback function for fetch that stores an unsigned 4 byte integer to the +location pointed. The column's type must be DATA_INT, DATA_UNSIGNED, length += 4. */ +UNIV_INTERN +void* +row_fetch_store_uint4( +/*==================*/ + /* out: always returns NULL */ + void* row, /* in: sel_node_t* */ + void* user_arg); /* in: data pointer */ +/*************************************************************** +Prints a row in a select result. */ +UNIV_INTERN +que_thr_t* +row_printf_step( +/*============*/ + /* out: query thread to run next or NULL */ + que_thr_t* thr); /* in: query thread */ +/******************************************************************** +Converts a key value stored in MySQL format to an Innobase dtuple. The last +field of the key value may be just a prefix of a fixed length field: hence +the parameter key_len. But currently we do not allow search keys where the +last field is only a prefix of the full key field len and print a warning if +such appears. */ +UNIV_INTERN +void +row_sel_convert_mysql_key_to_innobase( +/*==================================*/ + dtuple_t* tuple, /* in/out: tuple where to build; + NOTE: we assume that the type info + in the tuple is already according + to index! */ + byte* buf, /* in: buffer to use in field + conversions */ + ulint buf_len, /* in: buffer length */ + dict_index_t* index, /* in: index of the key value */ + const byte* key_ptr, /* in: MySQL key value */ + ulint key_len, /* in: MySQL key value length */ + trx_t* trx); /* in: transaction */ +/************************************************************************ +Searches for rows in the database. This is used in the interface to +MySQL. This function opens a cursor, and also implements fetch next +and fetch prev. NOTE that if we do a search with a full key value +from a unique index (ROW_SEL_EXACT), then we will not store the cursor +position and fetch next or fetch prev must not be tried to the cursor! */ +UNIV_INTERN +ulint +row_search_for_mysql( +/*=================*/ + /* out: DB_SUCCESS, + DB_RECORD_NOT_FOUND, + DB_END_OF_INDEX, DB_DEADLOCK, + DB_LOCK_TABLE_FULL, + or DB_TOO_BIG_RECORD */ + byte* buf, /* in/out: buffer for the fetched + row in the MySQL format */ + ulint mode, /* in: search mode PAGE_CUR_L, ... */ + row_prebuilt_t* prebuilt, /* in: prebuilt struct for the + table handle; this contains the info + of search_tuple, index; if search + tuple contains 0 fields then we + position the cursor at the start or + the end of the index, depending on + 'mode' */ + ulint match_mode, /* in: 0 or ROW_SEL_EXACT or + ROW_SEL_EXACT_PREFIX */ + ulint direction); /* in: 0 or ROW_SEL_NEXT or + ROW_SEL_PREV; NOTE: if this is != 0, + then prebuilt must have a pcur + with stored position! In opening of a + cursor 'direction' should be 0. */ +/*********************************************************************** +Checks if MySQL at the moment is allowed for this table to retrieve a +consistent read result, or store it to the query cache. */ +UNIV_INTERN +ibool +row_search_check_if_query_cache_permitted( +/*======================================*/ + /* out: TRUE if storing or retrieving + from the query cache is permitted */ + trx_t* trx, /* in: transaction object */ + const char* norm_name); /* in: concatenation of database name, + '/' char, table name */ +/*********************************************************************** +Read the max AUTOINC value from an index. */ +UNIV_INTERN +ulint +row_search_max_autoinc( +/*===================*/ + /* out: DB_SUCCESS if all OK else + error code */ + dict_index_t* index, /* in: index to search */ + const char* col_name, /* in: autoinc column name */ + ib_uint64_t* value); /* out: AUTOINC value read */ + +/* A structure for caching column values for prefetched rows */ +struct sel_buf_struct{ + byte* data; /* data, or NULL; if not NULL, this field + has allocated memory which must be explicitly + freed; can be != NULL even when len is + UNIV_SQL_NULL */ + ulint len; /* data length or UNIV_SQL_NULL */ + ulint val_buf_size; + /* size of memory buffer allocated for data: + this can be more than len; this is defined + when data != NULL */ +}; + +struct plan_struct{ + dict_table_t* table; /* table struct in the dictionary + cache */ + dict_index_t* index; /* table index used in the search */ + btr_pcur_t pcur; /* persistent cursor used to search + the index */ + ibool asc; /* TRUE if cursor traveling upwards */ + ibool pcur_is_open; /* TRUE if pcur has been positioned + and we can try to fetch new rows */ + ibool cursor_at_end; /* TRUE if the cursor is open but + we know that there are no more + qualifying rows left to retrieve from + the index tree; NOTE though, that + there may still be unprocessed rows in + the prefetch stack; always FALSE when + pcur_is_open is FALSE */ + ibool stored_cursor_rec_processed; + /* TRUE if the pcur position has been + stored and the record it is positioned + on has already been processed */ + que_node_t** tuple_exps; /* array of expressions which are used + to calculate the field values in the + search tuple: there is one expression + for each field in the search tuple */ + dtuple_t* tuple; /* search tuple */ + ulint mode; /* search mode: PAGE_CUR_G, ... */ + ulint n_exact_match; /* number of first fields in the search + tuple which must be exactly matched */ + ibool unique_search; /* TRUE if we are searching an + index record with a unique key */ + ulint n_rows_fetched; /* number of rows fetched using pcur + after it was opened */ + ulint n_rows_prefetched;/* number of prefetched rows cached + for fetch: fetching several rows in + the same mtr saves CPU time */ + ulint first_prefetched;/* index of the first cached row in + select buffer arrays for each column */ + ibool no_prefetch; /* no prefetch for this table */ + sym_node_list_t columns; /* symbol table nodes for the columns + to retrieve from the table */ + UT_LIST_BASE_NODE_T(func_node_t) + end_conds; /* conditions which determine the + fetch limit of the index segment we + have to look at: when one of these + fails, the result set has been + exhausted for the cursor in this + index; these conditions are normalized + so that in a comparison the column + for this table is the first argument */ + UT_LIST_BASE_NODE_T(func_node_t) + other_conds; /* the rest of search conditions we can + test at this table in a join */ + ibool must_get_clust; /* TRUE if index is a non-clustered + index and we must also fetch the + clustered index record; this is the + case if the non-clustered record does + not contain all the needed columns, or + if this is a single-table explicit + cursor, or a searched update or + delete */ + ulint* clust_map; /* map telling how clust_ref is built + from the fields of a non-clustered + record */ + dtuple_t* clust_ref; /* the reference to the clustered + index entry is built here if index is + a non-clustered index */ + btr_pcur_t clust_pcur; /* if index is non-clustered, we use + this pcur to search the clustered + index */ + mem_heap_t* old_vers_heap; /* memory heap used in building an old + version of a row, or NULL */ +}; + +struct sel_node_struct{ + que_common_t common; /* node type: QUE_NODE_SELECT */ + ulint state; /* node state */ + que_node_t* select_list; /* select list */ + sym_node_t* into_list; /* variables list or NULL */ + sym_node_t* table_list; /* table list */ + ibool asc; /* TRUE if the rows should be fetched + in an ascending order */ + ibool set_x_locks; /* TRUE if the cursor is for update or + delete, which means that a row x-lock + should be placed on the cursor row */ + ulint row_lock_mode; /* LOCK_X or LOCK_S */ + ulint n_tables; /* number of tables */ + ulint fetch_table; /* number of the next table to access + in the join */ + plan_t* plans; /* array of n_tables many plan nodes + containing the search plan and the + search data structures */ + que_node_t* search_cond; /* search condition */ + read_view_t* read_view; /* if the query is a non-locking + consistent read, its read view is + placed here, otherwise NULL */ + ibool consistent_read;/* TRUE if the select is a consistent, + non-locking read */ + order_node_t* order_by; /* order by column definition, or + NULL */ + ibool is_aggregate; /* TRUE if the select list consists of + aggregate functions */ + ibool aggregate_already_fetched; + /* TRUE if the aggregate row has + already been fetched for the current + cursor */ + ibool can_get_updated;/* this is TRUE if the select + is in a single-table explicit + cursor which can get updated + within the stored procedure, + or in a searched update or + delete; NOTE that to determine + of an explicit cursor if it + can get updated, the parser + checks from a stored procedure + if it contains positioned + update or delete statements */ + sym_node_t* explicit_cursor;/* not NULL if an explicit cursor */ + UT_LIST_BASE_NODE_T(sym_node_t) + copy_variables; /* variables whose values we have to + copy when an explicit cursor is opened, + so that they do not change between + fetches */ +}; + +/* Select node states */ +#define SEL_NODE_CLOSED 0 /* it is a declared cursor which is not + currently open */ +#define SEL_NODE_OPEN 1 /* intention locks not yet set on + tables */ +#define SEL_NODE_FETCH 2 /* intention locks have been set */ +#define SEL_NODE_NO_MORE_ROWS 3 /* cursor has reached the result set + end */ + +/* Fetch statement node */ +struct fetch_node_struct{ + que_common_t common; /* type: QUE_NODE_FETCH */ + sel_node_t* cursor_def; /* cursor definition */ + sym_node_t* into_list; /* variables to set */ + + pars_user_func_t* + func; /* User callback function or NULL. + The first argument to the function + is a sel_node_t*, containing the + results of the SELECT operation for + one row. If the function returns + NULL, it is not interested in + further rows and the cursor is + modified so (cursor % NOTFOUND) is + true. If it returns not-NULL, + continue normally. See + row_fetch_print() for an example + (and a useful debugging tool). */ +}; + +/* Open or close cursor statement node */ +struct open_node_struct{ + que_common_t common; /* type: QUE_NODE_OPEN */ + ulint op_type; /* ROW_SEL_OPEN_CURSOR or + ROW_SEL_CLOSE_CURSOR */ + sel_node_t* cursor_def; /* cursor definition */ +}; + +/* Row printf statement node */ +struct row_printf_node_struct{ + que_common_t common; /* type: QUE_NODE_ROW_PRINTF */ + sel_node_t* sel_node; /* select */ +}; + +#define ROW_SEL_OPEN_CURSOR 0 +#define ROW_SEL_CLOSE_CURSOR 1 + +/* Flags for the MySQL interface */ +#define ROW_SEL_NEXT 1 +#define ROW_SEL_PREV 2 + +#define ROW_SEL_EXACT 1 /* search using a complete key value */ +#define ROW_SEL_EXACT_PREFIX 2 /* search using a key prefix which + must match to rows: the prefix may + contain an incomplete field (the + last field in prefix may be just + a prefix of a fixed length column) */ + +#ifndef UNIV_NONINL +#include "row0sel.ic" +#endif + +#endif === added file 'storage/xtradb/include/row0sel.ic' --- a/storage/xtradb/include/row0sel.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/row0sel.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,104 @@ +/***************************************************************************** + +Copyright (c) 1997, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Select + +Created 12/19/1997 Heikki Tuuri +*******************************************************/ + +#include "que0que.h" + +/************************************************************************* +Gets the plan node for the nth table in a join. */ +UNIV_INLINE +plan_t* +sel_node_get_nth_plan( +/*==================*/ + /* out: plan node */ + sel_node_t* node, /* in: select node */ + ulint i) /* in: get ith plan node */ +{ + ut_ad(i < node->n_tables); + + return(node->plans + i); +} + +/************************************************************************* +Resets the cursor defined by sel_node to the SEL_NODE_OPEN state, which means +that it will start fetching from the start of the result set again, regardless +of where it was before, and it will set intention locks on the tables. */ +UNIV_INLINE +void +sel_node_reset_cursor( +/*==================*/ + sel_node_t* node) /* in: select node */ +{ + node->state = SEL_NODE_OPEN; +} + +/************************************************************************** +Performs an execution step of an open or close cursor statement node. */ +UNIV_INLINE +que_thr_t* +open_step( +/*======*/ + /* out: query thread to run next or NULL */ + que_thr_t* thr) /* in: query thread */ +{ + sel_node_t* sel_node; + open_node_t* node; + ulint err; + + ut_ad(thr); + + node = (open_node_t*) thr->run_node; + ut_ad(que_node_get_type(node) == QUE_NODE_OPEN); + + sel_node = node->cursor_def; + + err = DB_SUCCESS; + + if (node->op_type == ROW_SEL_OPEN_CURSOR) { + + /* if (sel_node->state == SEL_NODE_CLOSED) { */ + + sel_node_reset_cursor(sel_node); + /* } else { + err = DB_ERROR; + } */ + } else { + if (sel_node->state != SEL_NODE_CLOSED) { + + sel_node->state = SEL_NODE_CLOSED; + } else { + err = DB_ERROR; + } + } + + if (UNIV_EXPECT(err, DB_SUCCESS) != DB_SUCCESS) { + /* SQL error detected */ + fprintf(stderr, "SQL error %lu\n", (ulong) err); + + ut_error; + } + + thr->run_node = que_node_get_parent(node); + + return(thr); +} === added file 'storage/xtradb/include/row0types.h' --- a/storage/xtradb/include/row0types.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/row0types.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,58 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Row operation global types + +Created 12/27/1996 Heikki Tuuri +*******************************************************/ + +#ifndef row0types_h +#define row0types_h + +typedef struct plan_struct plan_t; + +typedef struct upd_struct upd_t; + +typedef struct upd_field_struct upd_field_t; + +typedef struct upd_node_struct upd_node_t; + +typedef struct del_node_struct del_node_t; + +typedef struct ins_node_struct ins_node_t; + +typedef struct sel_node_struct sel_node_t; + +typedef struct open_node_struct open_node_t; + +typedef struct fetch_node_struct fetch_node_t; + +typedef struct row_printf_node_struct row_printf_node_t; +typedef struct sel_buf_struct sel_buf_t; + +typedef struct undo_node_struct undo_node_t; + +typedef struct purge_node_struct purge_node_t; + +typedef struct row_ext_struct row_ext_t; + +/* MySQL data types */ +typedef struct st_table TABLE; + +#endif === added file 'storage/xtradb/include/row0uins.h' --- a/storage/xtradb/include/row0uins.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/row0uins.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,53 @@ +/***************************************************************************** + +Copyright (c) 1997, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Fresh insert undo + +Created 2/25/1997 Heikki Tuuri +*******************************************************/ + +#ifndef row0uins_h +#define row0uins_h + +#include "univ.i" +#include "data0data.h" +#include "dict0types.h" +#include "trx0types.h" +#include "que0types.h" +#include "row0types.h" +#include "mtr0mtr.h" + +/*************************************************************** +Undoes a fresh insert of a row to a table. A fresh insert means that +the same clustered index unique key did not have any record, even delete +marked, at the time of the insert. InnoDB is eager in a rollback: +if it figures out that an index record will be removed in the purge +anyway, it will remove it in the rollback. */ +UNIV_INTERN +ulint +row_undo_ins( +/*=========*/ + /* out: DB_SUCCESS */ + undo_node_t* node); /* in: row undo node */ + +#ifndef UNIV_NONINL +#include "row0uins.ic" +#endif + +#endif === added file 'storage/xtradb/include/row0uins.ic' --- a/storage/xtradb/include/row0uins.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/row0uins.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,24 @@ +/***************************************************************************** + +Copyright (c) 1997, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Fresh insert undo + +Created 2/25/1997 Heikki Tuuri +*******************************************************/ + === added file 'storage/xtradb/include/row0umod.h' --- a/storage/xtradb/include/row0umod.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/row0umod.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,51 @@ +/***************************************************************************** + +Copyright (c) 1997, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Undo modify of a row + +Created 2/27/1997 Heikki Tuuri +*******************************************************/ + +#ifndef row0umod_h +#define row0umod_h + +#include "univ.i" +#include "data0data.h" +#include "dict0types.h" +#include "trx0types.h" +#include "que0types.h" +#include "row0types.h" +#include "mtr0mtr.h" + +/*************************************************************** +Undoes a modify operation on a row of a table. */ +UNIV_INTERN +ulint +row_undo_mod( +/*=========*/ + /* out: DB_SUCCESS or error code */ + undo_node_t* node, /* in: row undo node */ + que_thr_t* thr); /* in: query thread */ + + +#ifndef UNIV_NONINL +#include "row0umod.ic" +#endif + +#endif === added file 'storage/xtradb/include/row0umod.ic' --- a/storage/xtradb/include/row0umod.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/row0umod.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,23 @@ +/***************************************************************************** + +Copyright (c) 1997, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Undo modify of a row + +Created 2/27/1997 Heikki Tuuri +*******************************************************/ === added file 'storage/xtradb/include/row0undo.h' --- a/storage/xtradb/include/row0undo.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/row0undo.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,136 @@ +/***************************************************************************** + +Copyright (c) 1997, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Row undo + +Created 1/8/1997 Heikki Tuuri +*******************************************************/ + +#ifndef row0undo_h +#define row0undo_h + +#include "univ.i" +#include "mtr0mtr.h" +#include "trx0sys.h" +#include "btr0types.h" +#include "btr0pcur.h" +#include "dict0types.h" +#include "trx0types.h" +#include "que0types.h" +#include "row0types.h" + +/************************************************************************ +Creates a row undo node to a query graph. */ +UNIV_INTERN +undo_node_t* +row_undo_node_create( +/*=================*/ + /* out, own: undo node */ + trx_t* trx, /* in: transaction */ + que_thr_t* parent, /* in: parent node, i.e., a thr node */ + mem_heap_t* heap); /* in: memory heap where created */ +/*************************************************************** +Looks for the clustered index record when node has the row reference. +The pcur in node is used in the search. If found, stores the row to node, +and stores the position of pcur, and detaches it. The pcur must be closed +by the caller in any case. */ +UNIV_INTERN +ibool +row_undo_search_clust_to_pcur( +/*==========================*/ + /* out: TRUE if found; NOTE the node->pcur + must be closed by the caller, regardless of + the return value */ + undo_node_t* node); /* in: row undo node */ +/*************************************************************** +Undoes a row operation in a table. This is a high-level function used +in SQL execution graphs. */ +UNIV_INTERN +que_thr_t* +row_undo_step( +/*==========*/ + /* out: query thread to run next or NULL */ + que_thr_t* thr); /* in: query thread */ + +/* A single query thread will try to perform the undo for all successive +versions of a clustered index record, if the transaction has modified it +several times during the execution which is rolled back. It may happen +that the task is transferred to another query thread, if the other thread +is assigned to handle an undo log record in the chain of different versions +of the record, and the other thread happens to get the x-latch to the +clustered index record at the right time. + If a query thread notices that the clustered index record it is looking +for is missing, or the roll ptr field in the record doed not point to the +undo log record the thread was assigned to handle, then it gives up the undo +task for that undo log record, and fetches the next. This situation can occur +just in the case where the transaction modified the same record several times +and another thread is currently doing the undo for successive versions of +that index record. */ + +/* Undo node structure */ + +struct undo_node_struct{ + que_common_t common; /* node type: QUE_NODE_UNDO */ + ulint state; /* node execution state */ + trx_t* trx; /* trx for which undo is done */ + dulint roll_ptr;/* roll pointer to undo log record */ + trx_undo_rec_t* undo_rec;/* undo log record */ + dulint undo_no;/* undo number of the record */ + ulint rec_type;/* undo log record type: TRX_UNDO_INSERT_REC, + ... */ + dulint new_roll_ptr; /* roll ptr to restore to clustered index + record */ + dulint new_trx_id; /* trx id to restore to clustered index + record */ + btr_pcur_t pcur; /* persistent cursor used in searching the + clustered index record */ + dict_table_t* table; /* table where undo is done */ + ulint cmpl_info;/* compiler analysis of an update */ + upd_t* update; /* update vector for a clustered index + record */ + dtuple_t* ref; /* row reference to the next row to handle */ + dtuple_t* row; /* a copy (also fields copied to heap) of the + row to handle */ + row_ext_t* ext; /* NULL, or prefixes of the externally + stored columns of the row */ + dtuple_t* undo_row;/* NULL, or the row after undo */ + row_ext_t* undo_ext;/* NULL, or prefixes of the externally + stored columns of undo_row */ + dict_index_t* index; /* the next index whose record should be + handled */ + mem_heap_t* heap; /* memory heap used as auxiliary storage for + row; this must be emptied after undo is tried + on a row */ +}; + +/* Execution states for an undo node */ +#define UNDO_NODE_FETCH_NEXT 1 /* we should fetch the next undo log + record */ +#define UNDO_NODE_PREV_VERS 2 /* the roll ptr to previous version of + a row is stored in node, and undo + should be done based on it */ +#define UNDO_NODE_INSERT 3 +#define UNDO_NODE_MODIFY 4 + + +#ifndef UNIV_NONINL +#include "row0undo.ic" +#endif + +#endif === added file 'storage/xtradb/include/row0undo.ic' --- a/storage/xtradb/include/row0undo.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/row0undo.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,23 @@ +/***************************************************************************** + +Copyright (c) 1997, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Row undo + +Created 1/8/1997 Heikki Tuuri +*******************************************************/ === added file 'storage/xtradb/include/row0upd.h' --- a/storage/xtradb/include/row0upd.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/row0upd.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,475 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Update of a row + +Created 12/27/1996 Heikki Tuuri +*******************************************************/ + +#ifndef row0upd_h +#define row0upd_h + +#include "univ.i" +#include "data0data.h" +#include "btr0types.h" +#include "btr0pcur.h" +#include "dict0types.h" +#include "trx0types.h" +#include "que0types.h" +#include "row0types.h" +#include "pars0types.h" + +/************************************************************************* +Creates an update vector object. */ +UNIV_INLINE +upd_t* +upd_create( +/*=======*/ + /* out, own: update vector object */ + ulint n, /* in: number of fields */ + mem_heap_t* heap); /* in: heap from which memory allocated */ +/************************************************************************* +Returns the number of fields in the update vector == number of columns +to be updated by an update vector. */ +UNIV_INLINE +ulint +upd_get_n_fields( +/*=============*/ + /* out: number of fields */ + const upd_t* update); /* in: update vector */ +#ifdef UNIV_DEBUG +/************************************************************************* +Returns the nth field of an update vector. */ +UNIV_INLINE +upd_field_t* +upd_get_nth_field( +/*==============*/ + /* out: update vector field */ + const upd_t* update, /* in: update vector */ + ulint n); /* in: field position in update vector */ +#else +# define upd_get_nth_field(update, n) ((update)->fields + (n)) +#endif +/************************************************************************* +Sets an index field number to be updated by an update vector field. */ +UNIV_INLINE +void +upd_field_set_field_no( +/*===================*/ + upd_field_t* upd_field, /* in: update vector field */ + ulint field_no, /* in: field number in a clustered + index */ + dict_index_t* index, /* in: index */ + trx_t* trx); /* in: transaction */ +/************************************************************************* +Returns a field of an update vector by field_no. */ +UNIV_INLINE +const upd_field_t* +upd_get_field_by_field_no( +/*======================*/ + /* out: update vector field, or NULL */ + const upd_t* update, /* in: update vector */ + ulint no) /* in: field_no */ + __attribute__((nonnull, pure)); +/************************************************************************* +Writes into the redo log the values of trx id and roll ptr and enough info +to determine their positions within a clustered index record. */ +UNIV_INTERN +byte* +row_upd_write_sys_vals_to_log( +/*==========================*/ + /* out: new pointer to mlog */ + dict_index_t* index, /* in: clustered index */ + trx_t* trx, /* in: transaction */ + dulint roll_ptr,/* in: roll ptr of the undo log record */ + byte* log_ptr,/* pointer to a buffer of size > 20 opened + in mlog */ + mtr_t* mtr); /* in: mtr */ +/************************************************************************* +Updates the trx id and roll ptr field in a clustered index record when +a row is updated or marked deleted. */ +UNIV_INLINE +void +row_upd_rec_sys_fields( +/*===================*/ + rec_t* rec, /* in/out: record */ + page_zip_des_t* page_zip,/* in/out: compressed page whose + uncompressed part will be updated, or NULL */ + dict_index_t* index, /* in: clustered index */ + const ulint* offsets,/* in: rec_get_offsets(rec, index) */ + trx_t* trx, /* in: transaction */ + dulint roll_ptr);/* in: roll ptr of the undo log record */ +/************************************************************************* +Sets the trx id or roll ptr field of a clustered index entry. */ +UNIV_INTERN +void +row_upd_index_entry_sys_field( +/*==========================*/ + const dtuple_t* entry, /* in: index entry, where the memory buffers + for sys fields are already allocated: + the function just copies the new values to + them */ + dict_index_t* index, /* in: clustered index */ + ulint type, /* in: DATA_TRX_ID or DATA_ROLL_PTR */ + dulint val); /* in: value to write */ +/************************************************************************* +Creates an update node for a query graph. */ +UNIV_INTERN +upd_node_t* +upd_node_create( +/*============*/ + /* out, own: update node */ + mem_heap_t* heap); /* in: mem heap where created */ +/*************************************************************** +Writes to the redo log the new values of the fields occurring in the index. */ +UNIV_INTERN +void +row_upd_index_write_log( +/*====================*/ + const upd_t* update, /* in: update vector */ + byte* log_ptr,/* in: pointer to mlog buffer: must + contain at least MLOG_BUF_MARGIN bytes + of free space; the buffer is closed + within this function */ + mtr_t* mtr); /* in: mtr into whose log to write */ +/*************************************************************** +Returns TRUE if row update changes size of some field in index or if some +field to be updated is stored externally in rec or update. */ +UNIV_INTERN +ibool +row_upd_changes_field_size_or_external( +/*===================================*/ + /* out: TRUE if the update changes the size of + some field in index or the field is external + in rec or update */ + dict_index_t* index, /* in: index */ + const ulint* offsets,/* in: rec_get_offsets(rec, index) */ + const upd_t* update);/* in: update vector */ +/*************************************************************** +Replaces the new column values stored in the update vector to the record +given. No field size changes are allowed. */ +UNIV_INTERN +void +row_upd_rec_in_place( +/*=================*/ + rec_t* rec, /* in/out: record where replaced */ + dict_index_t* index, /* in: the index the record belongs to */ + const ulint* offsets,/* in: array returned by rec_get_offsets() */ + const upd_t* update, /* in: update vector */ + page_zip_des_t* page_zip);/* in: compressed page with enough space + available, or NULL */ +/******************************************************************* +Builds an update vector from those fields which in a secondary index entry +differ from a record that has the equal ordering fields. NOTE: we compare +the fields as binary strings! */ +UNIV_INTERN +upd_t* +row_upd_build_sec_rec_difference_binary( +/*====================================*/ + /* out, own: update vector of differing + fields */ + dict_index_t* index, /* in: index */ + const dtuple_t* entry, /* in: entry to insert */ + const rec_t* rec, /* in: secondary index record */ + trx_t* trx, /* in: transaction */ + mem_heap_t* heap); /* in: memory heap from which allocated */ +/******************************************************************* +Builds an update vector from those fields, excluding the roll ptr and +trx id fields, which in an index entry differ from a record that has +the equal ordering fields. NOTE: we compare the fields as binary strings! */ +UNIV_INTERN +upd_t* +row_upd_build_difference_binary( +/*============================*/ + /* out, own: update vector of differing + fields, excluding roll ptr and trx id */ + dict_index_t* index, /* in: clustered index */ + const dtuple_t* entry, /* in: entry to insert */ + const rec_t* rec, /* in: clustered index record */ + trx_t* trx, /* in: transaction */ + mem_heap_t* heap); /* in: memory heap from which allocated */ +/*************************************************************** +Replaces the new column values stored in the update vector to the index entry +given. */ +UNIV_INTERN +void +row_upd_index_replace_new_col_vals_index_pos( +/*=========================================*/ + dtuple_t* entry, /* in/out: index entry where replaced; + the clustered index record must be + covered by a lock or a page latch to + prevent deletion (rollback or purge) */ + dict_index_t* index, /* in: index; NOTE that this may also be a + non-clustered index */ + const upd_t* update, /* in: an update vector built for the index so + that the field number in an upd_field is the + index position */ + ibool order_only, + /* in: if TRUE, limit the replacement to + ordering fields of index; note that this + does not work for non-clustered indexes. */ + mem_heap_t* heap) /* in: memory heap for allocating and + copying the new values */ + __attribute__((nonnull)); +/*************************************************************** +Replaces the new column values stored in the update vector to the index entry +given. */ +UNIV_INTERN +void +row_upd_index_replace_new_col_vals( +/*===============================*/ + dtuple_t* entry, /* in/out: index entry where replaced; + the clustered index record must be + covered by a lock or a page latch to + prevent deletion (rollback or purge) */ + dict_index_t* index, /* in: index; NOTE that this may also be a + non-clustered index */ + const upd_t* update, /* in: an update vector built for the + CLUSTERED index so that the field number in + an upd_field is the clustered index position */ + mem_heap_t* heap) /* in: memory heap for allocating and + copying the new values */ + __attribute__((nonnull)); +/*************************************************************** +Replaces the new column values stored in the update vector. */ +UNIV_INTERN +void +row_upd_replace( +/*============*/ + dtuple_t* row, /* in/out: row where replaced, + indexed by col_no; + the clustered index record must be + covered by a lock or a page latch to + prevent deletion (rollback or purge) */ + row_ext_t** ext, /* out, own: NULL, or externally + stored column prefixes */ + const dict_index_t* index, /* in: clustered index */ + const upd_t* update, /* in: an update vector built for the + clustered index */ + mem_heap_t* heap); /* in: memory heap */ +/*************************************************************** +Checks if an update vector changes an ordering field of an index record. +This function is fast if the update vector is short or the number of ordering +fields in the index is small. Otherwise, this can be quadratic. +NOTE: we compare the fields as binary strings! */ +UNIV_INTERN +ibool +row_upd_changes_ord_field_binary( +/*=============================*/ + /* out: TRUE if update vector changes + an ordering field in the index record; + NOTE: the fields are compared as binary + strings */ + const dtuple_t* row, /* in: old value of row, or NULL if the + row and the data values in update are not + known when this function is called, e.g., at + compile time */ + dict_index_t* index, /* in: index of the record */ + const upd_t* update);/* in: update vector for the row; NOTE: the + field numbers in this MUST be clustered index + positions! */ +/*************************************************************** +Checks if an update vector changes an ordering field of an index record. +This function is fast if the update vector is short or the number of ordering +fields in the index is small. Otherwise, this can be quadratic. +NOTE: we compare the fields as binary strings! */ +UNIV_INTERN +ibool +row_upd_changes_some_index_ord_field_binary( +/*========================================*/ + /* out: TRUE if update vector + may change an ordering field + in an index record */ + const dict_table_t* table, /* in: table */ + const upd_t* update);/* in: update vector for the row */ +/*************************************************************** +Updates a row in a table. This is a high-level function used +in SQL execution graphs. */ +UNIV_INTERN +que_thr_t* +row_upd_step( +/*=========*/ + /* out: query thread to run next or NULL */ + que_thr_t* thr); /* in: query thread */ +/************************************************************************* +Parses the log data of system field values. */ +UNIV_INTERN +byte* +row_upd_parse_sys_vals( +/*===================*/ + /* out: log data end or NULL */ + byte* ptr, /* in: buffer */ + byte* end_ptr,/* in: buffer end */ + ulint* pos, /* out: TRX_ID position in record */ + dulint* trx_id, /* out: trx id */ + dulint* roll_ptr);/* out: roll ptr */ +/************************************************************************* +Updates the trx id and roll ptr field in a clustered index record in database +recovery. */ +UNIV_INTERN +void +row_upd_rec_sys_fields_in_recovery( +/*===============================*/ + rec_t* rec, /* in/out: record */ + page_zip_des_t* page_zip,/* in/out: compressed page, or NULL */ + const ulint* offsets,/* in: array returned by rec_get_offsets() */ + ulint pos, /* in: TRX_ID position in rec */ + dulint trx_id, /* in: transaction id */ + dulint roll_ptr);/* in: roll ptr of the undo log record */ +/************************************************************************* +Parses the log data written by row_upd_index_write_log. */ +UNIV_INTERN +byte* +row_upd_index_parse( +/*================*/ + /* out: log data end or NULL */ + byte* ptr, /* in: buffer */ + byte* end_ptr,/* in: buffer end */ + mem_heap_t* heap, /* in: memory heap where update vector is + built */ + upd_t** update_out);/* out: update vector */ + + +/* Update vector field */ +struct upd_field_struct{ + unsigned field_no:16; /* field number in an index, usually + the clustered index, but in updating + a secondary index record in btr0cur.c + this is the position in the secondary + index */ + unsigned orig_len:16; /* original length of the locally + stored part of an externally stored + column, or 0 */ + que_node_t* exp; /* expression for calculating a new + value: it refers to column values and + constants in the symbol table of the + query graph */ + dfield_t new_val; /* new value for the column */ +}; + +/* Update vector structure */ +struct upd_struct{ + ulint info_bits; /* new value of info bits to record; + default is 0 */ + ulint n_fields; /* number of update fields */ + upd_field_t* fields; /* array of update fields */ +}; + +/* Update node structure which also implements the delete operation +of a row */ + +struct upd_node_struct{ + que_common_t common; /* node type: QUE_NODE_UPDATE */ + ibool is_delete;/* TRUE if delete, FALSE if update */ + ibool searched_update; + /* TRUE if searched update, FALSE if + positioned */ + ibool in_mysql_interface; + /* TRUE if the update node was created + for the MySQL interface */ + dict_foreign_t* foreign;/* NULL or pointer to a foreign key + constraint if this update node is used in + doing an ON DELETE or ON UPDATE operation */ + upd_node_t* cascade_node;/* NULL or an update node template which + is used to implement ON DELETE/UPDATE CASCADE + or ... SET NULL for foreign keys */ + mem_heap_t* cascade_heap;/* NULL or a mem heap where the cascade + node is created */ + sel_node_t* select; /* query graph subtree implementing a base + table cursor: the rows returned will be + updated */ + btr_pcur_t* pcur; /* persistent cursor placed on the clustered + index record which should be updated or + deleted; the cursor is stored in the graph + of 'select' field above, except in the case + of the MySQL interface */ + dict_table_t* table; /* table where updated */ + upd_t* update; /* update vector for the row */ + ulint update_n_fields; + /* when this struct is used to implement + a cascade operation for foreign keys, we store + here the size of the buffer allocated for use + as the update vector */ + sym_node_list_t columns;/* symbol table nodes for the columns + to retrieve from the table */ + ibool has_clust_rec_x_lock; + /* TRUE if the select which retrieves the + records to update already sets an x-lock on + the clustered record; note that it must always + set at least an s-lock */ + ulint cmpl_info;/* information extracted during query + compilation; speeds up execution: + UPD_NODE_NO_ORD_CHANGE and + UPD_NODE_NO_SIZE_CHANGE, ORed */ + /*----------------------*/ + /* Local storage for this graph node */ + ulint state; /* node execution state */ + dict_index_t* index; /* NULL, or the next index whose record should + be updated */ + dtuple_t* row; /* NULL, or a copy (also fields copied to + heap) of the row to update; this must be reset + to NULL after a successful update */ + row_ext_t* ext; /* NULL, or prefixes of the externally + stored columns in the old row */ + dtuple_t* upd_row;/* NULL, or a copy of the updated row */ + row_ext_t* upd_ext;/* NULL, or prefixes of the externally + stored columns in upd_row */ + mem_heap_t* heap; /* memory heap used as auxiliary storage; + this must be emptied after a successful + update */ + /*----------------------*/ + sym_node_t* table_sym;/* table node in symbol table */ + que_node_t* col_assign_list; + /* column assignment list */ + ulint magic_n; +}; + +#define UPD_NODE_MAGIC_N 1579975 + +/* Node execution states */ +#define UPD_NODE_SET_IX_LOCK 1 /* execution came to the node from + a node above and if the field + has_clust_rec_x_lock is FALSE, we + should set an intention x-lock on + the table */ +#define UPD_NODE_UPDATE_CLUSTERED 2 /* clustered index record should be + updated */ +#define UPD_NODE_INSERT_CLUSTERED 3 /* clustered index record should be + inserted, old record is already delete + marked */ +#define UPD_NODE_UPDATE_ALL_SEC 4 /* an ordering field of the clustered + index record was changed, or this is + a delete operation: should update + all the secondary index records */ +#define UPD_NODE_UPDATE_SOME_SEC 5 /* secondary index entries should be + looked at and updated if an ordering + field changed */ + +/* Compilation info flags: these must fit within 3 bits; see trx0rec.h */ +#define UPD_NODE_NO_ORD_CHANGE 1 /* no secondary index record will be + changed in the update and no ordering + field of the clustered index */ +#define UPD_NODE_NO_SIZE_CHANGE 2 /* no record field size will be + changed in the update */ + +#ifndef UNIV_NONINL +#include "row0upd.ic" +#endif + +#endif === added file 'storage/xtradb/include/row0upd.ic' --- a/storage/xtradb/include/row0upd.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/row0upd.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,179 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Update of a row + +Created 12/27/1996 Heikki Tuuri +*******************************************************/ + +#include "mtr0log.h" +#include "trx0trx.h" +#include "trx0undo.h" +#include "row0row.h" +#include "btr0sea.h" +#include "page0zip.h" + +/************************************************************************* +Creates an update vector object. */ +UNIV_INLINE +upd_t* +upd_create( +/*=======*/ + /* out, own: update vector object */ + ulint n, /* in: number of fields */ + mem_heap_t* heap) /* in: heap from which memory allocated */ +{ + upd_t* update; + + update = (upd_t*) mem_heap_alloc(heap, sizeof(upd_t)); + + update->info_bits = 0; + update->n_fields = n; + update->fields = (upd_field_t*) + mem_heap_alloc(heap, sizeof(upd_field_t) * n); + + return(update); +} + +/************************************************************************* +Returns the number of fields in the update vector == number of columns +to be updated by an update vector. */ +UNIV_INLINE +ulint +upd_get_n_fields( +/*=============*/ + /* out: number of fields */ + const upd_t* update) /* in: update vector */ +{ + ut_ad(update); + + return(update->n_fields); +} + +#ifdef UNIV_DEBUG +/************************************************************************* +Returns the nth field of an update vector. */ +UNIV_INLINE +upd_field_t* +upd_get_nth_field( +/*==============*/ + /* out: update vector field */ + const upd_t* update, /* in: update vector */ + ulint n) /* in: field position in update vector */ +{ + ut_ad(update); + ut_ad(n < update->n_fields); + + return((upd_field_t*) update->fields + n); +} +#endif /* UNIV_DEBUG */ + +/************************************************************************* +Sets an index field number to be updated by an update vector field. */ +UNIV_INLINE +void +upd_field_set_field_no( +/*===================*/ + upd_field_t* upd_field, /* in: update vector field */ + ulint field_no, /* in: field number in a clustered + index */ + dict_index_t* index, /* in: index */ + trx_t* trx) /* in: transaction */ +{ + upd_field->field_no = field_no; + upd_field->orig_len = 0; + + if (UNIV_UNLIKELY(field_no >= dict_index_get_n_fields(index))) { + fprintf(stderr, + "InnoDB: Error: trying to access field %lu in ", + (ulong) field_no); + dict_index_name_print(stderr, trx, index); + fprintf(stderr, "\n" + "InnoDB: but index only has %lu fields\n", + (ulong) dict_index_get_n_fields(index)); + } + + dict_col_copy_type(dict_index_get_nth_col(index, field_no), + dfield_get_type(&upd_field->new_val)); +} + +/************************************************************************* +Returns a field of an update vector by field_no. */ +UNIV_INLINE +const upd_field_t* +upd_get_field_by_field_no( +/*======================*/ + /* out: update vector field, or NULL */ + const upd_t* update, /* in: update vector */ + ulint no) /* in: field_no */ +{ + ulint i; + for (i = 0; i < upd_get_n_fields(update); i++) { + const upd_field_t* uf = upd_get_nth_field(update, i); + + if (uf->field_no == no) { + + return(uf); + } + } + + return(NULL); +} + +/************************************************************************* +Updates the trx id and roll ptr field in a clustered index record when +a row is updated or marked deleted. */ +UNIV_INLINE +void +row_upd_rec_sys_fields( +/*===================*/ + rec_t* rec, /* in/out: record */ + page_zip_des_t* page_zip,/* in/out: compressed page whose + uncompressed part will be updated, or NULL */ + dict_index_t* index, /* in: clustered index */ + const ulint* offsets,/* in: rec_get_offsets(rec, index) */ + trx_t* trx, /* in: transaction */ + dulint roll_ptr)/* in: roll ptr of the undo log record */ +{ + ut_ad(dict_index_is_clust(index)); + ut_ad(rec_offs_validate(rec, index, offsets)); +#ifdef UNIV_SYNC_DEBUG + if (!rw_lock_own(&btr_search_latch, RW_LOCK_EX)) { + ut_ad(!buf_block_align(rec)->is_hashed); + } +#endif /* UNIV_SYNC_DEBUG */ + + if (UNIV_LIKELY_NULL(page_zip)) { + ulint pos = dict_index_get_sys_col_pos(index, DATA_TRX_ID); + page_zip_write_trx_id_and_roll_ptr(page_zip, rec, offsets, + pos, trx->id, roll_ptr); + } else { + ulint offset = index->trx_id_offset; + + if (!offset) { + offset = row_get_trx_id_offset(rec, index, offsets); + } + +#if DATA_TRX_ID + 1 != DATA_ROLL_PTR +# error "DATA_TRX_ID + 1 != DATA_ROLL_PTR" +#endif + trx_write_trx_id(rec + offset, trx->id); + trx_write_roll_ptr(rec + offset + DATA_TRX_ID_LEN, roll_ptr); + } +} === added file 'storage/xtradb/include/row0vers.h' --- a/storage/xtradb/include/row0vers.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/row0vers.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,142 @@ +/***************************************************************************** + +Copyright (c) 1997, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Row versions + +Created 2/6/1997 Heikki Tuuri +*******************************************************/ + +#ifndef row0vers_h +#define row0vers_h + +#include "univ.i" +#include "data0data.h" +#include "dict0types.h" +#include "trx0types.h" +#include "que0types.h" +#include "rem0types.h" +#include "mtr0mtr.h" +#include "read0types.h" + +/********************************************************************* +Finds out if an active transaction has inserted or modified a secondary +index record. NOTE: the kernel mutex is temporarily released in this +function! */ +UNIV_INTERN +trx_t* +row_vers_impl_x_locked_off_kernel( +/*==============================*/ + /* out: NULL if committed, else the active + transaction; NOTE that the kernel mutex is + temporarily released! */ + const rec_t* rec, /* in: record in a secondary index */ + dict_index_t* index, /* in: the secondary index */ + const ulint* offsets);/* in: rec_get_offsets(rec, index) */ +/********************************************************************* +Finds out if we must preserve a delete marked earlier version of a clustered +index record, because it is >= the purge view. */ +UNIV_INTERN +ibool +row_vers_must_preserve_del_marked( +/*==============================*/ + /* out: TRUE if earlier version should be preserved */ + dulint trx_id, /* in: transaction id in the version */ + mtr_t* mtr); /* in: mtr holding the latch on the clustered index + record; it will also hold the latch on purge_view */ +/********************************************************************* +Finds out if a version of the record, where the version >= the current +purge view, should have ientry as its secondary index entry. We check +if there is any not delete marked version of the record where the trx +id >= purge view, and the secondary index entry == ientry; exactly in +this case we return TRUE. */ +UNIV_INTERN +ibool +row_vers_old_has_index_entry( +/*=========================*/ + /* out: TRUE if earlier version should have */ + ibool also_curr,/* in: TRUE if also rec is included in the + versions to search; otherwise only versions + prior to it are searched */ + const rec_t* rec, /* in: record in the clustered index; the + caller must have a latch on the page */ + mtr_t* mtr, /* in: mtr holding the latch on rec; it will + also hold the latch on purge_view */ + dict_index_t* index, /* in: the secondary index */ + const dtuple_t* ientry);/* in: the secondary index entry */ +/********************************************************************* +Constructs the version of a clustered index record which a consistent +read should see. We assume that the trx id stored in rec is such that +the consistent read should not see rec in its present version. */ +UNIV_INTERN +ulint +row_vers_build_for_consistent_read( +/*===============================*/ + /* out: DB_SUCCESS or DB_MISSING_HISTORY */ + const rec_t* rec, /* in: record in a clustered index; the + caller must have a latch on the page; this + latch locks the top of the stack of versions + of this records */ + mtr_t* mtr, /* in: mtr holding the latch on rec; it will + also hold the latch on purge_view */ + dict_index_t* index, /* in: the clustered index */ + ulint** offsets,/* in/out: offsets returned by + rec_get_offsets(rec, index) */ + read_view_t* view, /* in: the consistent read view */ + mem_heap_t** offset_heap,/* in/out: memory heap from which + the offsets are allocated */ + mem_heap_t* in_heap,/* in: memory heap from which the memory for + *old_vers is allocated; memory for possible + intermediate versions is allocated and freed + locally within the function */ + rec_t** old_vers);/* out, own: old version, or NULL if the + record does not exist in the view, that is, + it was freshly inserted afterwards */ + +/********************************************************************* +Constructs the last committed version of a clustered index record, +which should be seen by a semi-consistent read. */ +UNIV_INTERN +ulint +row_vers_build_for_semi_consistent_read( +/*====================================*/ + /* out: DB_SUCCESS or DB_MISSING_HISTORY */ + const rec_t* rec, /* in: record in a clustered index; the + caller must have a latch on the page; this + latch locks the top of the stack of versions + of this records */ + mtr_t* mtr, /* in: mtr holding the latch on rec */ + dict_index_t* index, /* in: the clustered index */ + ulint** offsets,/* in/out: offsets returned by + rec_get_offsets(rec, index) */ + mem_heap_t** offset_heap,/* in/out: memory heap from which + the offsets are allocated */ + mem_heap_t* in_heap,/* in: memory heap from which the memory for + *old_vers is allocated; memory for possible + intermediate versions is allocated and freed + locally within the function */ + const rec_t** old_vers);/* out: rec, old version, or NULL if the + record does not exist in the view, that is, + it was freshly inserted afterwards */ + + +#ifndef UNIV_NONINL +#include "row0vers.ic" +#endif + +#endif === added file 'storage/xtradb/include/row0vers.ic' --- a/storage/xtradb/include/row0vers.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/row0vers.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,29 @@ +/***************************************************************************** + +Copyright (c) 1997, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Row versions + +Created 2/6/1997 Heikki Tuuri +*******************************************************/ + +#include "row0row.h" +#include "dict0dict.h" +#include "read0read.h" +#include "page0page.h" +#include "log0recv.h" === added file 'storage/xtradb/include/srv0que.h' --- a/storage/xtradb/include/srv0que.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/srv0que.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,68 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Server query execution + +Created 6/5/1996 Heikki Tuuri +*******************************************************/ + +#ifndef srv0que_h +#define srv0que_h + +#include "univ.i" +#include "que0types.h" + +/************************************************************************** +Checks if there is work to do in the server task queue. If there is, the +thread starts processing a task. Before leaving, it again checks the task +queue and picks a new task if any exists. This is called by a SRV_WORKER +thread. */ +UNIV_INTERN +void +srv_que_task_queue_check(void); +/*==========================*/ +/************************************************************************** +Performs round-robin on the server tasks. This is called by a SRV_WORKER +thread every second or so. */ +UNIV_INTERN +que_thr_t* +srv_que_round_robin( +/*================*/ + /* out: the new (may be == thr) query thread + to run */ + que_thr_t* thr); /* in: query thread */ +/************************************************************************** +Enqueues a task to server task queue and releases a worker thread, if +there exists one suspended. */ +UNIV_INTERN +void +srv_que_task_enqueue( +/*=================*/ + que_thr_t* thr); /* in: query thread */ +/************************************************************************** +Enqueues a task to server task queue and releases a worker thread, if +there exists one suspended. */ +UNIV_INTERN +void +srv_que_task_enqueue_low( +/*=====================*/ + que_thr_t* thr); /* in: query thread */ + +#endif + === added file 'storage/xtradb/include/srv0srv.h' --- a/storage/xtradb/include/srv0srv.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/srv0srv.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,608 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. +Copyright (c) 2008, Google Inc. + +Portions of this file contain modifications contributed and copyrighted by +Google, Inc. Those modifications are gratefully acknowledged and are described +briefly in the InnoDB documentation. The contributions by Google are +incorporated with their permission, and subject to the conditions contained in +the file COPYING.Google. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +The server main program + +Created 10/10/1995 Heikki Tuuri +*******************************************************/ + +#ifndef srv0srv_h +#define srv0srv_h + +#include "univ.i" +#include "sync0sync.h" +#include "os0sync.h" +#include "que0types.h" +#include "trx0types.h" + +extern const char* srv_main_thread_op_info; + +/* Prefix used by MySQL to indicate pre-5.1 table name encoding */ +extern const char srv_mysql50_table_name_prefix[9]; + +/* When this event is set the lock timeout and InnoDB monitor +thread starts running */ +extern os_event_t srv_lock_timeout_thread_event; + +/* If the last data file is auto-extended, we add this many pages to it +at a time */ +#define SRV_AUTO_EXTEND_INCREMENT \ + (srv_auto_extend_increment * ((1024 * 1024) / UNIV_PAGE_SIZE)) + +/* This is set to TRUE if the MySQL user has set it in MySQL */ +extern ibool srv_lower_case_table_names; + +/* Mutex for locking srv_monitor_file */ +extern mutex_t srv_monitor_file_mutex; +/* Temporary file for innodb monitor output */ +extern FILE* srv_monitor_file; +/* Mutex for locking srv_dict_tmpfile. +This mutex has a very high rank; threads reserving it should not +be holding any InnoDB latches. */ +extern mutex_t srv_dict_tmpfile_mutex; +/* Temporary file for output from the data dictionary */ +extern FILE* srv_dict_tmpfile; +/* Mutex for locking srv_misc_tmpfile. +This mutex has a very low rank; threads reserving it should not +acquire any further latches or sleep before releasing this one. */ +extern mutex_t srv_misc_tmpfile_mutex; +/* Temporary file for miscellanous diagnostic output */ +extern FILE* srv_misc_tmpfile; + +/* Server parameters which are read from the initfile */ + +extern char* srv_data_home; +#ifdef UNIV_LOG_ARCHIVE +extern char* srv_arch_dir; +#endif /* UNIV_LOG_ARCHIVE */ + +/* store to its own file each table created by an user; data +dictionary tables are in the system tablespace 0 */ +extern my_bool srv_file_per_table; +/* The file format to use on new *.ibd files. */ +extern ulint srv_file_format; +/* Whether to check file format during startup.*/ +extern ulint srv_check_file_format_at_startup; +/* Place locks to records only i.e. do not use next-key locking except +on duplicate key checking and foreign key checking */ +extern ibool srv_locks_unsafe_for_binlog; + +extern ulint srv_n_data_files; +extern char** srv_data_file_names; +extern ulint* srv_data_file_sizes; +extern ulint* srv_data_file_is_raw_partition; + +extern ibool srv_extra_undoslots; + +extern ibool srv_auto_extend_last_data_file; +extern ulint srv_last_file_size_max; +extern ulong srv_auto_extend_increment; + +extern ibool srv_created_new_raw; + +#define SRV_NEW_RAW 1 +#define SRV_OLD_RAW 2 + +extern char** srv_log_group_home_dirs; + +extern ulint srv_n_log_groups; +extern ulint srv_n_log_files; +extern ulint srv_log_file_size; +extern ulint srv_log_buffer_size; +extern ulong srv_flush_log_at_trx_commit; + +extern ulint srv_show_locks_held; +extern ulint srv_show_verbose_locks; + +/* The sort order table of the MySQL latin1_swedish_ci character set +collation */ +extern const byte* srv_latin1_ordering; +extern my_bool srv_use_sys_malloc; +extern ulint srv_buf_pool_size; /* requested size in bytes */ +extern ulint srv_buf_pool_old_size; /* previously requested size */ +extern ulint srv_buf_pool_curr_size; /* current size in bytes */ +extern ulint srv_mem_pool_size; +extern ulint srv_lock_table_size; + +extern ulint srv_n_file_io_threads; +extern ulint srv_n_read_io_threads; +extern ulint srv_n_write_io_threads; + +#ifdef UNIV_LOG_ARCHIVE +extern ibool srv_log_archive_on; +extern ibool srv_archive_recovery; +extern dulint srv_archive_recovery_limit_lsn; +#endif /* UNIV_LOG_ARCHIVE */ + +extern char* srv_file_flush_method_str; +extern ulint srv_unix_file_flush_method; +extern ulint srv_win_file_flush_method; + +extern ulint srv_max_n_open_files; + +extern ulint srv_max_dirty_pages_pct; + +extern ulint srv_force_recovery; +extern ulong srv_thread_concurrency; +extern ulong srv_commit_concurrency; + +extern ulint srv_max_n_threads; + +extern lint srv_conc_n_threads; + +extern ulint srv_fast_shutdown; /* If this is 1, do not do a + purge and index buffer merge. + If this 2, do not even flush the + buffer pool to data files at the + shutdown: we effectively 'crash' + InnoDB (but lose no committed + transactions). */ +extern ibool srv_innodb_status; + +extern unsigned long long srv_stats_sample_pages; + +extern ibool srv_use_doublewrite_buf; +extern ibool srv_use_checksums; + +extern ibool srv_set_thread_priorities; +extern int srv_query_thread_priority; + +extern ulong srv_max_buf_pool_modified_pct; +extern ulong srv_max_purge_lag; + +extern ulong srv_replication_delay; + +extern ulint srv_io_capacity; +extern long long srv_ibuf_max_size; +extern ulint srv_ibuf_active_contract; +extern ulint srv_ibuf_accel_rate; +extern ulint srv_flush_neighbor_pages; +extern ulint srv_enable_unsafe_group_commit; +extern ulint srv_read_ahead; +extern ulint srv_adaptive_checkpoint; + +extern ulint srv_extra_rsegments; + +/*-------------------------------------------*/ + +extern ulint srv_n_rows_inserted; +extern ulint srv_n_rows_updated; +extern ulint srv_n_rows_deleted; +extern ulint srv_n_rows_read; + +extern ibool srv_print_innodb_monitor; +extern ibool srv_print_innodb_lock_monitor; +extern ibool srv_print_innodb_tablespace_monitor; +extern ibool srv_print_verbose_log; +extern ibool srv_print_innodb_table_monitor; + +extern ibool srv_lock_timeout_and_monitor_active; +extern ibool srv_error_monitor_active; + +extern ulong srv_n_spin_wait_rounds; +extern ulong srv_n_free_tickets_to_enter; +extern ulong srv_thread_sleep_delay; +extern ulint srv_spin_wait_delay; +extern ibool srv_priority_boost; + +extern ulint srv_mem_pool_size; +extern ulint srv_lock_table_size; + +#ifdef UNIV_DEBUG +extern ibool srv_print_thread_releases; +extern ibool srv_print_lock_waits; +extern ibool srv_print_buf_io; +extern ibool srv_print_log_io; +extern ibool srv_print_latch_waits; +#else /* UNIV_DEBUG */ +# define srv_print_thread_releases FALSE +# define srv_print_lock_waits FALSE +# define srv_print_buf_io FALSE +# define srv_print_log_io FALSE +# define srv_print_latch_waits FALSE +#endif /* UNIV_DEBUG */ + +extern ulint srv_activity_count; +extern ulint srv_fatal_semaphore_wait_threshold; +extern ulint srv_dml_needed_delay; + +extern mutex_t* kernel_mutex_temp;/* mutex protecting the server, trx structs, + query threads, and lock table: we allocate + it from dynamic memory to get it to the + same DRAM page as other hotspot semaphores */ +#define kernel_mutex (*kernel_mutex_temp) + +#define SRV_MAX_N_IO_THREADS 100 + +/* Array of English strings describing the current state of an +i/o handler thread */ +extern const char* srv_io_thread_op_info[]; +extern const char* srv_io_thread_function[]; + +/* the number of the log write requests done */ +extern ulint srv_log_write_requests; + +/* the number of physical writes to the log performed */ +extern ulint srv_log_writes; + +/* amount of data written to the log files in bytes */ +extern ulint srv_os_log_written; + +/* amount of writes being done to the log files */ +extern ulint srv_os_log_pending_writes; + +/* we increase this counter, when there we don't have enough space in the +log buffer and have to flush it */ +extern ulint srv_log_waits; + +/* variable that counts amount of data read in total (in bytes) */ +extern ulint srv_data_read; + +/* here we count the amount of data written in total (in bytes) */ +extern ulint srv_data_written; + +/* this variable counts the amount of times, when the doublewrite buffer +was flushed */ +extern ulint srv_dblwr_writes; + +/* here we store the number of pages that have been flushed to the +doublewrite buffer */ +extern ulint srv_dblwr_pages_written; + +/* in this variable we store the number of write requests issued */ +extern ulint srv_buf_pool_write_requests; + +/* here we store the number of times when we had to wait for a free page +in the buffer pool. It happens when the buffer pool is full and we need +to make a flush, in order to be able to read or create a page. */ +extern ulint srv_buf_pool_wait_free; + +/* variable to count the number of pages that were written from the +buffer pool to disk */ +extern ulint srv_buf_pool_flushed; + +/* variable to count the number of buffer pool reads that led to the +reading of a disk page */ +extern ulint srv_buf_pool_reads; + +/* variable to count the number of sequential read-aheads were done */ +extern ulint srv_read_ahead_seq; + +/* variable to count the number of random read-aheads were done */ +extern ulint srv_read_ahead_rnd; + +/* In this structure we store status variables to be passed to MySQL */ +typedef struct export_var_struct export_struc; + +extern export_struc export_vars; + +typedef struct srv_sys_struct srv_sys_t; + +/* The server system */ +extern srv_sys_t* srv_sys; + +/* Alternatives for the file flush option in Unix; see the InnoDB manual +about what these mean */ +#define SRV_UNIX_FSYNC 1 /* This is the default */ +#define SRV_UNIX_O_DSYNC 2 +#define SRV_UNIX_LITTLESYNC 3 +#define SRV_UNIX_NOSYNC 4 +#define SRV_UNIX_O_DIRECT 5 + +/* Alternatives for file i/o in Windows */ +#define SRV_WIN_IO_NORMAL 1 +#define SRV_WIN_IO_UNBUFFERED 2 /* This is the default */ + +/* Alternatives for srv_force_recovery. Non-zero values are intended +to help the user get a damaged database up so that he can dump intact +tables and rows with SELECT INTO OUTFILE. The database must not otherwise +be used with these options! A bigger number below means that all precautions +of lower numbers are included. */ + +#define SRV_FORCE_IGNORE_CORRUPT 1 /* let the server run even if it + detects a corrupt page */ +#define SRV_FORCE_NO_BACKGROUND 2 /* prevent the main thread from + running: if a crash would occur + in purge, this prevents it */ +#define SRV_FORCE_NO_TRX_UNDO 3 /* do not run trx rollback after + recovery */ +#define SRV_FORCE_NO_IBUF_MERGE 4 /* prevent also ibuf operations: + if they would cause a crash, better + not do them */ +#define SRV_FORCE_NO_UNDO_LOG_SCAN 5 /* do not look at undo logs when + starting the database: InnoDB will + treat even incomplete transactions + as committed */ +#define SRV_FORCE_NO_LOG_REDO 6 /* do not do the log roll-forward + in connection with recovery */ + +/** Types of threads existing in the system. */ +enum srv_thread_type { + SRV_COM = 1, /**< threads serving communication and queries */ + SRV_CONSOLE, /**< thread serving console */ + SRV_WORKER, /**< threads serving parallelized queries and + queries released from lock wait */ +#if 0 + /* Utility threads */ + SRV_BUFFER, /**< thread flushing dirty buffer blocks */ + SRV_RECOVERY, /**< threads finishing a recovery */ + SRV_INSERT, /**< thread flushing the insert buffer to disk */ +#endif + SRV_MASTER /**< the master thread, (whose type number must + be biggest) */ +}; + +/************************************************************************* +Boots Innobase server. */ +UNIV_INTERN +ulint +srv_boot(void); +/*==========*/ + /* out: DB_SUCCESS or error code */ +/************************************************************************* +Initializes the server. */ +UNIV_INTERN +void +srv_init(void); +/*==========*/ +/************************************************************************* +Frees the OS fast mutex created in srv_boot(). */ +UNIV_INTERN +void +srv_free(void); +/*==========*/ +/************************************************************************* +Initializes the synchronization primitives, memory system, and the thread +local storage. */ +UNIV_INTERN +void +srv_general_init(void); +/*==================*/ +/************************************************************************* +Gets the number of threads in the system. */ +UNIV_INTERN +ulint +srv_get_n_threads(void); +/*===================*/ +/************************************************************************* +Returns the calling thread type. */ + +enum srv_thread_type +srv_get_thread_type(void); +/*=====================*/ + /* out: SRV_COM, ... */ +/************************************************************************* +Sets the info describing an i/o thread current state. */ +UNIV_INTERN +void +srv_set_io_thread_op_info( +/*======================*/ + ulint i, /* in: the 'segment' of the i/o thread */ + const char* str); /* in: constant char string describing the + state */ +/************************************************************************* +Releases threads of the type given from suspension in the thread table. +NOTE! The server mutex has to be reserved by the caller! */ +UNIV_INTERN +ulint +srv_release_threads( +/*================*/ + /* out: number of threads + released: this may be < n if + not enough threads were + suspended at the moment */ + enum srv_thread_type type, /* in: thread type */ + ulint n); /* in: number of threads to release */ +/************************************************************************* +The master thread controlling the server. */ +UNIV_INTERN +os_thread_ret_t +srv_master_thread( +/*==============*/ + /* out: a dummy parameter */ + void* arg); /* in: a dummy parameter required by + os_thread_create */ +/*********************************************************************** +Tells the Innobase server that there has been activity in the database +and wakes up the master thread if it is suspended (not sleeping). Used +in the MySQL interface. Note that there is a small chance that the master +thread stays suspended (we do not protect our operation with the kernel +mutex, for performace reasons). */ +UNIV_INTERN +void +srv_active_wake_master_thread(void); +/*===============================*/ +/*********************************************************************** +Wakes up the master thread if it is suspended or being suspended. */ +UNIV_INTERN +void +srv_wake_master_thread(void); +/*========================*/ +/************************************************************************* +Puts an OS thread to wait if there are too many concurrent threads +(>= srv_thread_concurrency) inside InnoDB. The threads wait in a FIFO queue. */ +UNIV_INTERN +void +srv_conc_enter_innodb( +/*==================*/ + trx_t* trx); /* in: transaction object associated with the + thread */ +/************************************************************************* +This lets a thread enter InnoDB regardless of the number of threads inside +InnoDB. This must be called when a thread ends a lock wait. */ +UNIV_INTERN +void +srv_conc_force_enter_innodb( +/*========================*/ + trx_t* trx); /* in: transaction object associated with the + thread */ +/************************************************************************* +This must be called when a thread exits InnoDB in a lock wait or at the +end of an SQL statement. */ +UNIV_INTERN +void +srv_conc_force_exit_innodb( +/*=======================*/ + trx_t* trx); /* in: transaction object associated with the + thread */ +/************************************************************************* +This must be called when a thread exits InnoDB. */ +UNIV_INTERN +void +srv_conc_exit_innodb( +/*=================*/ + trx_t* trx); /* in: transaction object associated with the + thread */ +/******************************************************************* +Puts a MySQL OS thread to wait for a lock to be released. If an error +occurs during the wait trx->error_state associated with thr is +!= DB_SUCCESS when we return. DB_LOCK_WAIT_TIMEOUT and DB_DEADLOCK +are possible errors. DB_DEADLOCK is returned if selective deadlock +resolution chose this transaction as a victim. */ +UNIV_INTERN +void +srv_suspend_mysql_thread( +/*=====================*/ + que_thr_t* thr); /* in: query thread associated with the MySQL + OS thread */ +/************************************************************************ +Releases a MySQL OS thread waiting for a lock to be released, if the +thread is already suspended. */ +UNIV_INTERN +void +srv_release_mysql_thread_if_suspended( +/*==================================*/ + que_thr_t* thr); /* in: query thread associated with the + MySQL OS thread */ +/************************************************************************* +A thread which wakes up threads whose lock wait may have lasted too long. +This also prints the info output by various InnoDB monitors. */ +UNIV_INTERN +os_thread_ret_t +srv_lock_timeout_and_monitor_thread( +/*================================*/ + /* out: a dummy parameter */ + void* arg); /* in: a dummy parameter required by + os_thread_create */ +/************************************************************************* +A thread which prints warnings about semaphore waits which have lasted +too long. These can be used to track bugs which cause hangs. */ +UNIV_INTERN +os_thread_ret_t +srv_error_monitor_thread( +/*=====================*/ + /* out: a dummy parameter */ + void* arg); /* in: a dummy parameter required by + os_thread_create */ +/********************************************************************** +Outputs to a file the output of the InnoDB Monitor. */ +UNIV_INTERN +void +srv_printf_innodb_monitor( +/*======================*/ + FILE* file, /* in: output stream */ + ulint* trx_start, /* out: file position of the start of + the list of active transactions */ + ulint* trx_end); /* out: file position of the end of + the list of active transactions */ + +/********************************************************************** +Function to pass InnoDB status variables to MySQL */ +UNIV_INTERN +void +srv_export_innodb_status(void); +/*=====================*/ + +/* Thread slot in the thread table */ +typedef struct srv_slot_struct srv_slot_t; + +/* Thread table is an array of slots */ +typedef srv_slot_t srv_table_t; + +/* In this structure we store status variables to be passed to MySQL */ +struct export_var_struct{ + ulint innodb_data_pending_reads; + ulint innodb_data_pending_writes; + ulint innodb_data_pending_fsyncs; + ulint innodb_data_fsyncs; + ulint innodb_data_read; + ulint innodb_data_writes; + ulint innodb_data_written; + ulint innodb_data_reads; + ulint innodb_buffer_pool_pages_total; + ulint innodb_buffer_pool_pages_data; + ulint innodb_buffer_pool_pages_dirty; + ulint innodb_buffer_pool_pages_misc; + ulint innodb_buffer_pool_pages_free; +#ifdef UNIV_DEBUG + ulint innodb_buffer_pool_pages_latched; +#endif /* UNIV_DEBUG */ + ulint innodb_buffer_pool_read_requests; + ulint innodb_buffer_pool_reads; + ulint innodb_buffer_pool_wait_free; + ulint innodb_buffer_pool_pages_flushed; + ulint innodb_buffer_pool_write_requests; + ulint innodb_buffer_pool_read_ahead_seq; + ulint innodb_buffer_pool_read_ahead_rnd; + ulint innodb_dblwr_pages_written; + ulint innodb_dblwr_writes; + ibool innodb_have_atomic_builtins; + ulint innodb_log_waits; + ulint innodb_log_write_requests; + ulint innodb_log_writes; + ulint innodb_os_log_written; + ulint innodb_os_log_fsyncs; + ulint innodb_os_log_pending_writes; + ulint innodb_os_log_pending_fsyncs; + ulint innodb_page_size; + ulint innodb_pages_created; + ulint innodb_pages_read; + ulint innodb_pages_written; + ulint innodb_row_lock_waits; + ulint innodb_row_lock_current_waits; + ib_int64_t innodb_row_lock_time; + ulint innodb_row_lock_time_avg; + ulint innodb_row_lock_time_max; + ulint innodb_rows_read; + ulint innodb_rows_inserted; + ulint innodb_rows_updated; + ulint innodb_rows_deleted; +}; + +/* The server system struct */ +struct srv_sys_struct{ + srv_table_t* threads; /* server thread table */ + UT_LIST_BASE_NODE_T(que_thr_t) + tasks; /* task queue */ + dict_index_t* dummy_ind1; /* dummy index for old-style + supremum and infimum records */ + dict_index_t* dummy_ind2; /* dummy index for new-style + supremum and infimum records */ +}; + +extern ulint srv_n_threads_active[]; + +#endif === added file 'storage/xtradb/include/srv0srv.ic' --- a/storage/xtradb/include/srv0srv.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/srv0srv.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,23 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Server main program + +Created 10/4/1995 Heikki Tuuri +*******************************************************/ === added file 'storage/xtradb/include/srv0start.h' --- a/storage/xtradb/include/srv0start.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/srv0start.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,118 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Starts the Innobase database server + +Created 10/10/1995 Heikki Tuuri +*******************************************************/ + +#ifndef srv0start_h +#define srv0start_h + +#include "univ.i" +#include "ut0byte.h" + +/************************************************************************* +Normalizes a directory path for Windows: converts slashes to backslashes. */ +UNIV_INTERN +void +srv_normalize_path_for_win( +/*=======================*/ + char* str); /* in/out: null-terminated character string */ +/************************************************************************* +Reads the data files and their sizes from a character string given in +the .cnf file. */ +UNIV_INTERN +ibool +srv_parse_data_file_paths_and_sizes( +/*================================*/ + /* out: TRUE if ok, FALSE on parse error */ + char* str); /* in/out: the data file path string */ +/************************************************************************* +Reads log group home directories from a character string given in +the .cnf file. */ +UNIV_INTERN +ibool +srv_parse_log_group_home_dirs( +/*==========================*/ + /* out: TRUE if ok, FALSE on parse error */ + char* str); /* in/out: character string */ +/************************************************************************* +Frees the memory allocated by srv_parse_data_file_paths_and_sizes() +and srv_parse_log_group_home_dirs(). */ +UNIV_INTERN +void +srv_free_paths_and_sizes(void); +/*==========================*/ +/************************************************************************* +Adds a slash or a backslash to the end of a string if it is missing +and the string is not empty. */ +UNIV_INTERN +char* +srv_add_path_separator_if_needed( +/*=============================*/ + /* out: string which has the separator if the + string is not empty */ + char* str); /* in: null-terminated character string */ +/******************************************************************** +Starts Innobase and creates a new database if database files +are not found and the user wants. */ +UNIV_INTERN +int +innobase_start_or_create_for_mysql(void); +/*====================================*/ + /* out: DB_SUCCESS or error code */ +/******************************************************************** +Shuts down the Innobase database. */ +UNIV_INTERN +int +innobase_shutdown_for_mysql(void); +/*=============================*/ + /* out: DB_SUCCESS or error code */ +extern ib_uint64_t srv_shutdown_lsn; +extern ib_uint64_t srv_start_lsn; + +#ifdef __NETWARE__ +void set_panic_flag_for_netware(void); +#endif + +#ifdef HAVE_DARWIN_THREADS +extern ibool srv_have_fullfsync; +#endif + +extern ibool srv_is_being_started; +extern ibool srv_was_started; +extern ibool srv_startup_is_before_trx_rollback_phase; +extern ibool srv_is_being_shut_down; + +extern ibool srv_start_raw_disk_in_use; + +/* At a shutdown the value first climbs from 0 to SRV_SHUTDOWN_CLEANUP +and then to SRV_SHUTDOWN_LAST_PHASE, and so on */ + +extern ulint srv_shutdown_state; + +#define SRV_SHUTDOWN_CLEANUP 1 +#define SRV_SHUTDOWN_LAST_PHASE 2 +#define SRV_SHUTDOWN_EXIT_THREADS 3 + +/* Log 'spaces' have id's >= this */ +#define SRV_LOG_SPACE_FIRST_ID 0xFFFFFFF0UL + +#endif === added file 'storage/xtradb/include/sync0arr.h' --- a/storage/xtradb/include/sync0arr.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/sync0arr.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,138 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +The wait array used in synchronization primitives + +Created 9/5/1995 Heikki Tuuri +*******************************************************/ + +#ifndef sync0arr_h +#define sync0arr_h + +#include "univ.i" +#include "ut0lst.h" +#include "ut0mem.h" +#include "os0thread.h" + +typedef struct sync_cell_struct sync_cell_t; +typedef struct sync_array_struct sync_array_t; + +#define SYNC_ARRAY_OS_MUTEX 1 +#define SYNC_ARRAY_MUTEX 2 + +/*********************************************************************** +Creates a synchronization wait array. It is protected by a mutex +which is automatically reserved when the functions operating on it +are called. */ +UNIV_INTERN +sync_array_t* +sync_array_create( +/*==============*/ + /* out, own: created wait array */ + ulint n_cells, /* in: number of cells in the array + to create */ + ulint protection); /* in: either SYNC_ARRAY_OS_MUTEX or + SYNC_ARRAY_MUTEX: determines the type + of mutex protecting the data structure */ +/********************************************************************** +Frees the resources in a wait array. */ +UNIV_INTERN +void +sync_array_free( +/*============*/ + sync_array_t* arr); /* in, own: sync wait array */ +/********************************************************************** +Reserves a wait array cell for waiting for an object. +The event of the cell is reset to nonsignalled state. */ +UNIV_INTERN +void +sync_array_reserve_cell( +/*====================*/ + sync_array_t* arr, /* in: wait array */ + void* object, /* in: pointer to the object to wait for */ + ulint type, /* in: lock request type */ + const char* file, /* in: file where requested */ + ulint line, /* in: line where requested */ + ulint* index); /* out: index of the reserved cell */ +/********************************************************************** +This function should be called when a thread starts to wait on +a wait array cell. In the debug version this function checks +if the wait for a semaphore will result in a deadlock, in which +case prints info and asserts. */ +UNIV_INTERN +void +sync_array_wait_event( +/*==================*/ + sync_array_t* arr, /* in: wait array */ + ulint index); /* in: index of the reserved cell */ +/********************************************************************** +Frees the cell. NOTE! sync_array_wait_event frees the cell +automatically! */ +UNIV_INTERN +void +sync_array_free_cell( +/*=================*/ + sync_array_t* arr, /* in: wait array */ + ulint index); /* in: index of the cell in array */ +/************************************************************************** +Note that one of the wait objects was signalled. */ +UNIV_INTERN +void +sync_array_object_signalled( +/*========================*/ + sync_array_t* arr); /* in: wait array */ +/************************************************************************** +If the wakeup algorithm does not work perfectly at semaphore relases, +this function will do the waking (see the comment in mutex_exit). This +function should be called about every 1 second in the server. */ +UNIV_INTERN +void +sync_arr_wake_threads_if_sema_free(void); +/*====================================*/ +/************************************************************************** +Prints warnings of long semaphore waits to stderr. */ +UNIV_INTERN +ibool +sync_array_print_long_waits(void); +/*=============================*/ + /* out: TRUE if fatal semaphore wait threshold + was exceeded */ +/************************************************************************ +Validates the integrity of the wait array. Checks +that the number of reserved cells equals the count variable. */ +UNIV_INTERN +void +sync_array_validate( +/*================*/ + sync_array_t* arr); /* in: sync wait array */ +/************************************************************************** +Prints info of the wait array. */ +UNIV_INTERN +void +sync_array_print_info( +/*==================*/ + FILE* file, /* in: file where to print */ + sync_array_t* arr); /* in: wait array */ + + +#ifndef UNIV_NONINL +#include "sync0arr.ic" +#endif + +#endif === added file 'storage/xtradb/include/sync0arr.ic' --- a/storage/xtradb/include/sync0arr.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/sync0arr.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,26 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +The wait array for synchronization primitives + +Inline code + +Created 9/5/1995 Heikki Tuuri +*******************************************************/ + === added file 'storage/xtradb/include/sync0rw.h' --- a/storage/xtradb/include/sync0rw.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/sync0rw.h 2009-06-11 12:53:26 +0000 @@ -0,0 +1,567 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. +Copyright (c) 2008, Google Inc. + +Portions of this file contain modifications contributed and copyrighted by +Google, Inc. Those modifications are gratefully acknowledged and are described +briefly in the InnoDB documentation. The contributions by Google are +incorporated with their permission, and subject to the conditions contained in +the file COPYING.Google. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +The read-write lock (for threads, not for database transactions) + +Created 9/11/1995 Heikki Tuuri +*******************************************************/ + +#ifndef sync0rw_h +#define sync0rw_h + +#include "univ.i" +#include "ut0lst.h" +#include "sync0sync.h" +#include "os0sync.h" + +/* The following undef is to prevent a name conflict with a macro +in MySQL: */ +#undef rw_lock_t + +/* Latch types; these are used also in btr0btr.h: keep the numerical values +smaller than 30 and the order of the numerical values like below! */ +#define RW_S_LATCH 1 +#define RW_X_LATCH 2 +#define RW_NO_LATCH 3 + +/* We decrement lock_word by this amount for each x_lock. It is also the +start value for the lock_word, meaning that it limits the maximum number +of concurrent read locks before the rw_lock breaks. The current value of +0x00100000 allows 1,048,575 concurrent readers and 2047 recursive writers.*/ +#define X_LOCK_DECR 0x00100000 + +typedef struct rw_lock_struct rw_lock_t; +#ifdef UNIV_SYNC_DEBUG +typedef struct rw_lock_debug_struct rw_lock_debug_t; +#endif /* UNIV_SYNC_DEBUG */ + +typedef UT_LIST_BASE_NODE_T(rw_lock_t) rw_lock_list_t; + +extern rw_lock_list_t rw_lock_list; +extern mutex_t rw_lock_list_mutex; + +#ifdef UNIV_SYNC_DEBUG +/* The global mutex which protects debug info lists of all rw-locks. +To modify the debug info list of an rw-lock, this mutex has to be + +acquired in addition to the mutex protecting the lock. */ +extern mutex_t rw_lock_debug_mutex; +extern os_event_t rw_lock_debug_event; /* If deadlock detection does + not get immediately the mutex it + may wait for this event */ +extern ibool rw_lock_debug_waiters; /* This is set to TRUE, if + there may be waiters for the event */ +#endif /* UNIV_SYNC_DEBUG */ + +extern ib_int64_t rw_s_spin_wait_count; +extern ib_int64_t rw_s_spin_round_count; +extern ib_int64_t rw_s_exit_count; +extern ib_int64_t rw_s_os_wait_count; +extern ib_int64_t rw_x_spin_wait_count; +extern ib_int64_t rw_x_spin_round_count; +extern ib_int64_t rw_x_os_wait_count; +extern ib_int64_t rw_x_exit_count; + +/********************************************************************** +Creates, or rather, initializes an rw-lock object in a specified memory +location (which must be appropriately aligned). The rw-lock is initialized +to the non-locked state. Explicit freeing of the rw-lock with rw_lock_free +is necessary only if the memory block containing it is freed. */ +#ifdef UNIV_DEBUG +# ifdef UNIV_SYNC_DEBUG +# define rw_lock_create(L, level) \ + rw_lock_create_func((L), (level), #L, __FILE__, __LINE__) +# else /* UNIV_SYNC_DEBUG */ +# define rw_lock_create(L, level) \ + rw_lock_create_func((L), #L, __FILE__, __LINE__) +# endif /* UNIV_SYNC_DEBUG */ +#else /* UNIV_DEBUG */ +# define rw_lock_create(L, level) \ + rw_lock_create_func((L), __FILE__, __LINE__) +#endif /* UNIV_DEBUG */ + +/********************************************************************** +Creates, or rather, initializes an rw-lock object in a specified memory +location (which must be appropriately aligned). The rw-lock is initialized +to the non-locked state. Explicit freeing of the rw-lock with rw_lock_free +is necessary only if the memory block containing it is freed. */ +UNIV_INTERN +void +rw_lock_create_func( +/*================*/ + rw_lock_t* lock, /* in: pointer to memory */ +#ifdef UNIV_DEBUG +# ifdef UNIV_SYNC_DEBUG + ulint level, /* in: level */ +# endif /* UNIV_SYNC_DEBUG */ + const char* cmutex_name, /* in: mutex name */ +#endif /* UNIV_DEBUG */ + const char* cfile_name, /* in: file name where created */ + ulint cline); /* in: file line where created */ +/********************************************************************** +Calling this function is obligatory only if the memory buffer containing +the rw-lock is freed. Removes an rw-lock object from the global list. The +rw-lock is checked to be in the non-locked state. */ +UNIV_INTERN +void +rw_lock_free( +/*=========*/ + rw_lock_t* lock); /* in: rw-lock */ +#ifdef UNIV_DEBUG +/********************************************************************** +Checks that the rw-lock has been initialized and that there are no +simultaneous shared and exclusive locks. */ +UNIV_INTERN +ibool +rw_lock_validate( +/*=============*/ + rw_lock_t* lock); +#endif /* UNIV_DEBUG */ +/****************************************************************** +NOTE! The following macros should be used in rw s-locking, not the +corresponding function. */ + +#define rw_lock_s_lock(M) rw_lock_s_lock_func(\ + (M), 0, __FILE__, __LINE__) +/****************************************************************** +NOTE! The following macros should be used in rw s-locking, not the +corresponding function. */ + +#define rw_lock_s_lock_gen(M, P) rw_lock_s_lock_func(\ + (M), (P), __FILE__, __LINE__) +/****************************************************************** +NOTE! The following macros should be used in rw s-locking, not the +corresponding function. */ + +#define rw_lock_s_lock_nowait(M, F, L) rw_lock_s_lock_low(\ + (M), 0, (F), (L)) +/********************************************************************** +Low-level function which tries to lock an rw-lock in s-mode. Performs no +spinning. */ +UNIV_INLINE +ibool +rw_lock_s_lock_low( +/*===============*/ + /* out: TRUE if success */ + rw_lock_t* lock, /* in: pointer to rw-lock */ + ulint pass __attribute__((unused)), + /* in: pass value; != 0, if the lock will be + passed to another thread to unlock */ + const char* file_name, /* in: file name where lock requested */ + ulint line); /* in: line where requested */ +/********************************************************************** +NOTE! Use the corresponding macro, not directly this function, except if +you supply the file name and line number. Lock an rw-lock in shared mode +for the current thread. If the rw-lock is locked in exclusive mode, or +there is an exclusive lock request waiting, the function spins a preset +time (controlled by SYNC_SPIN_ROUNDS), waiting for the lock, before +suspending the thread. */ +UNIV_INLINE +void +rw_lock_s_lock_func( +/*================*/ + rw_lock_t* lock, /* in: pointer to rw-lock */ + ulint pass, /* in: pass value; != 0, if the lock will + be passed to another thread to unlock */ + const char* file_name,/* in: file name where lock requested */ + ulint line); /* in: line where requested */ +/********************************************************************** +NOTE! Use the corresponding macro, not directly this function! Lock an +rw-lock in exclusive mode for the current thread if the lock can be +obtained immediately. */ +UNIV_INLINE +ibool +rw_lock_x_lock_func_nowait( +/*=======================*/ + /* out: TRUE if success */ + rw_lock_t* lock, /* in: pointer to rw-lock */ + const char* file_name,/* in: file name where lock requested */ + ulint line); /* in: line where requested */ +/********************************************************************** +Releases a shared mode lock. */ +UNIV_INLINE +void +rw_lock_s_unlock_func( +/*==================*/ + rw_lock_t* lock /* in: rw-lock */ +#ifdef UNIV_SYNC_DEBUG + ,ulint pass /* in: pass value; != 0, if the lock may have + been passed to another thread to unlock */ +#endif + ); +/*********************************************************************** +Releases a shared mode lock. */ + +#ifdef UNIV_SYNC_DEBUG +#define rw_lock_s_unlock(L) rw_lock_s_unlock_func(L, 0) +#else +#define rw_lock_s_unlock(L) rw_lock_s_unlock_func(L) +#endif +/*********************************************************************** +Releases a shared mode lock. */ + +#ifdef UNIV_SYNC_DEBUG +#define rw_lock_s_unlock_gen(L, P) rw_lock_s_unlock_func(L, P) +#else +#define rw_lock_s_unlock_gen(L, P) rw_lock_s_unlock_func(L) +#endif +/****************************************************************** +NOTE! The following macro should be used in rw x-locking, not the +corresponding function. */ + +#define rw_lock_x_lock(M) rw_lock_x_lock_func(\ + (M), 0, __FILE__, __LINE__) +/****************************************************************** +NOTE! The following macro should be used in rw x-locking, not the +corresponding function. */ + +#define rw_lock_x_lock_gen(M, P) rw_lock_x_lock_func(\ + (M), (P), __FILE__, __LINE__) +/****************************************************************** +NOTE! The following macros should be used in rw x-locking, not the +corresponding function. */ + +#define rw_lock_x_lock_nowait(M) rw_lock_x_lock_func_nowait(\ + (M), __FILE__, __LINE__) +/********************************************************************** +NOTE! Use the corresponding macro, not directly this function! Lock an +rw-lock in exclusive mode for the current thread. If the rw-lock is locked +in shared or exclusive mode, or there is an exclusive lock request waiting, +the function spins a preset time (controlled by SYNC_SPIN_ROUNDS), waiting +for the lock, before suspending the thread. If the same thread has an x-lock +on the rw-lock, locking succeed, with the following exception: if pass != 0, +only a single x-lock may be taken on the lock. NOTE: If the same thread has +an s-lock, locking does not succeed! */ +UNIV_INTERN +void +rw_lock_x_lock_func( +/*================*/ + rw_lock_t* lock, /* in: pointer to rw-lock */ + ulint pass, /* in: pass value; != 0, if the lock will + be passed to another thread to unlock */ + const char* file_name,/* in: file name where lock requested */ + ulint line); /* in: line where requested */ +/********************************************************************** +Releases an exclusive mode lock. */ +UNIV_INLINE +void +rw_lock_x_unlock_func( +/*==================*/ + rw_lock_t* lock /* in: rw-lock */ +#ifdef UNIV_SYNC_DEBUG + ,ulint pass /* in: pass value; != 0, if the lock may have + been passed to another thread to unlock */ +#endif + ); +/*********************************************************************** +Releases an exclusive mode lock. */ + +#ifdef UNIV_SYNC_DEBUG +#define rw_lock_x_unlock(L) rw_lock_x_unlock_func(L, 0) +#else +#define rw_lock_x_unlock(L) rw_lock_x_unlock_func(L) +#endif +/*********************************************************************** +Releases an exclusive mode lock. */ + +#ifdef UNIV_SYNC_DEBUG +#define rw_lock_x_unlock_gen(L, P) rw_lock_x_unlock_func(L, P) +#else +#define rw_lock_x_unlock_gen(L, P) rw_lock_x_unlock_func(L) +#endif +/********************************************************************** +Low-level function which locks an rw-lock in s-mode when we know that it +is possible and none else is currently accessing the rw-lock structure. +Then we can do the locking without reserving the mutex. */ +UNIV_INLINE +void +rw_lock_s_lock_direct( +/*==================*/ + rw_lock_t* lock, /* in: pointer to rw-lock */ + const char* file_name, /* in: file name where requested */ + ulint line /* in: line where lock requested */ +); +/********************************************************************** +Low-level function which locks an rw-lock in x-mode when we know that it +is not locked and none else is currently accessing the rw-lock structure. +Then we can do the locking without reserving the mutex. */ +UNIV_INLINE +void +rw_lock_x_lock_direct( +/*==================*/ + rw_lock_t* lock, /* in: pointer to rw-lock */ + const char* file_name, /* in: file name where requested */ + ulint line /* in: line where lock requested */ +); +/********************************************************************** +This function is used in the insert buffer to move the ownership of an +x-latch on a buffer frame to the current thread. The x-latch was set by +the buffer read operation and it protected the buffer frame while the +read was done. The ownership is moved because we want that the current +thread is able to acquire a second x-latch which is stored in an mtr. +This, in turn, is needed to pass the debug checks of index page +operations. */ +UNIV_INTERN +void +rw_lock_x_lock_move_ownership( +/*==========================*/ + rw_lock_t* lock); /* in: lock which was x-locked in the + buffer read */ +/********************************************************************** +Releases a shared mode lock when we know there are no waiters and none +else will access the lock during the time this function is executed. */ +UNIV_INLINE +void +rw_lock_s_unlock_direct( +/*====================*/ + rw_lock_t* lock); /* in: rw-lock */ +/********************************************************************** +Releases an exclusive mode lock when we know there are no waiters, and +none else will access the lock durint the time this function is executed. */ +UNIV_INLINE +void +rw_lock_x_unlock_direct( +/*====================*/ + rw_lock_t* lock); /* in: rw-lock */ +/********************************************************************** +Returns the value of writer_count for the lock. Does not reserve the lock +mutex, so the caller must be sure it is not changed during the call. */ +UNIV_INLINE +ulint +rw_lock_get_x_lock_count( +/*=====================*/ + /* out: value of writer_count */ + rw_lock_t* lock); /* in: rw-lock */ +/************************************************************************ +Accessor functions for rw lock. */ +UNIV_INLINE +ulint +rw_lock_get_waiters( +/*================*/ + rw_lock_t* lock); +UNIV_INLINE +ulint +rw_lock_get_writer( +/*===============*/ + rw_lock_t* lock); +UNIV_INLINE +ulint +rw_lock_get_reader_count( +/*=====================*/ + rw_lock_t* lock); +/********************************************************************** +Decrements lock_word the specified amount if it is greater than 0. +This is used by both s_lock and x_lock operations. */ +UNIV_INLINE +ibool +rw_lock_lock_word_decr( +/*===================*/ + /* out: TRUE if decr occurs */ + rw_lock_t* lock, /* in: rw-lock */ + ulint amount); /* in: amount to decrement */ +/********************************************************************** +Increments lock_word the specified amount and returns new value. */ +UNIV_INLINE +lint +rw_lock_lock_word_incr( +/*===================*/ + /* out: TRUE if decr occurs */ + rw_lock_t* lock, + ulint amount); /* in: rw-lock */ +/********************************************************************** +This function sets the lock->writer_thread and lock->recursive fields. +For platforms where we are using atomic builtins instead of lock->mutex +it sets the lock->writer_thread field using atomics to ensure memory +ordering. Note that it is assumed that the caller of this function +effectively owns the lock i.e.: nobody else is allowed to modify +lock->writer_thread at this point in time. +The protocol is that lock->writer_thread MUST be updated BEFORE the +lock->recursive flag is set. */ +UNIV_INLINE +void +rw_lock_set_writer_id_and_recursion_flag( +/*=====================================*/ + rw_lock_t* lock, /* in/out: lock to work on */ + ibool recursive); /* in: TRUE if recursion + allowed */ +#ifdef UNIV_SYNC_DEBUG +/********************************************************************** +Checks if the thread has locked the rw-lock in the specified mode, with +the pass value == 0. */ +UNIV_INTERN +ibool +rw_lock_own( +/*========*/ + rw_lock_t* lock, /* in: rw-lock */ + ulint lock_type); /* in: lock type: RW_LOCK_SHARED, + RW_LOCK_EX */ +#endif /* UNIV_SYNC_DEBUG */ +/********************************************************************** +Checks if somebody has locked the rw-lock in the specified mode. */ +UNIV_INTERN +ibool +rw_lock_is_locked( +/*==============*/ + rw_lock_t* lock, /* in: rw-lock */ + ulint lock_type); /* in: lock type: RW_LOCK_SHARED, + RW_LOCK_EX */ +#ifdef UNIV_SYNC_DEBUG +/******************************************************************* +Prints debug info of an rw-lock. */ +UNIV_INTERN +void +rw_lock_print( +/*==========*/ + rw_lock_t* lock); /* in: rw-lock */ +/******************************************************************* +Prints debug info of currently locked rw-locks. */ +UNIV_INTERN +void +rw_lock_list_print_info( +/*====================*/ + FILE* file); /* in: file where to print */ +/******************************************************************* +Returns the number of currently locked rw-locks. +Works only in the debug version. */ +UNIV_INTERN +ulint +rw_lock_n_locked(void); +/*==================*/ + +/*#####################################################################*/ + +/********************************************************************** +Acquires the debug mutex. We cannot use the mutex defined in sync0sync, +because the debug mutex is also acquired in sync0arr while holding the OS +mutex protecting the sync array, and the ordinary mutex_enter might +recursively call routines in sync0arr, leading to a deadlock on the OS +mutex. */ +UNIV_INTERN +void +rw_lock_debug_mutex_enter(void); +/*==========================*/ +/********************************************************************** +Releases the debug mutex. */ +UNIV_INTERN +void +rw_lock_debug_mutex_exit(void); +/*==========================*/ +/************************************************************************* +Prints info of a debug struct. */ +UNIV_INTERN +void +rw_lock_debug_print( +/*================*/ + rw_lock_debug_t* info); /* in: debug struct */ +#endif /* UNIV_SYNC_DEBUG */ + +/* NOTE! The structure appears here only for the compiler to know its size. +Do not use its fields directly! The structure used in the spin lock +implementation of a read-write lock. Several threads may have a shared lock +simultaneously in this lock, but only one writer may have an exclusive lock, +in which case no shared locks are allowed. To prevent starving of a writer +blocked by readers, a writer may queue for x-lock by decrementing lock_word: +no new readers will be let in while the thread waits for readers to exit. */ + +struct rw_lock_struct { + volatile lint lock_word; + /* Holds the state of the lock. */ + volatile ulint waiters;/* 1: there are waiters */ + volatile ibool recursive;/* Default value FALSE which means the lock + is non-recursive. The value is typically set + to TRUE making normal rw_locks recursive. In + case of asynchronous IO, when a non-zero + value of 'pass' is passed then we keep the + lock non-recursive. + This flag also tells us about the state of + writer_thread field. If this flag is set + then writer_thread MUST contain the thread + id of the current x-holder or wait-x thread. + This flag must be reset in x_unlock + functions before incrementing the lock_word */ + volatile os_thread_id_t writer_thread; + /* Thread id of writer thread. Is only + guaranteed to have sane and non-stale + value iff recursive flag is set. */ + os_event_t event; /* Used by sync0arr.c for thread queueing */ + os_event_t wait_ex_event; + /* Event for next-writer to wait on. A thread + must decrement lock_word before waiting. */ +#ifndef INNODB_RW_LOCKS_USE_ATOMICS + mutex_t mutex; /* The mutex protecting rw_lock_struct */ +#endif /* INNODB_RW_LOCKS_USE_ATOMICS */ + + UT_LIST_NODE_T(rw_lock_t) list; + /* All allocated rw locks are put into a + list */ +#ifdef UNIV_SYNC_DEBUG + UT_LIST_BASE_NODE_T(rw_lock_debug_t) debug_list; + /* In the debug version: pointer to the debug + info list of the lock */ + ulint level; /* Level in the global latching order. */ +#endif /* UNIV_SYNC_DEBUG */ + ulint count_os_wait; /* Count of os_waits. May not be accurate */ + const char* cfile_name;/* File name where lock created */ + /* last s-lock file/line is not guaranteed to be correct */ + const char* last_s_file_name;/* File name where last s-locked */ + const char* last_x_file_name;/* File name where last x-locked */ + ibool writer_is_wait_ex; + /* This is TRUE if the writer field is + RW_LOCK_WAIT_EX; this field is located far + from the memory update hotspot fields which + are at the start of this struct, thus we can + peek this field without causing much memory + bus traffic */ + unsigned cline:14; /* Line where created */ + unsigned last_s_line:14; /* Line number where last time s-locked */ + unsigned last_x_line:14; /* Line number where last time x-locked */ + ulint magic_n; +}; + +#define RW_LOCK_MAGIC_N 22643 + +#ifdef UNIV_SYNC_DEBUG +/* The structure for storing debug info of an rw-lock */ +struct rw_lock_debug_struct { + + os_thread_id_t thread_id; /* The thread id of the thread which + locked the rw-lock */ + ulint pass; /* Pass value given in the lock operation */ + ulint lock_type; /* Type of the lock: RW_LOCK_EX, + RW_LOCK_SHARED, RW_LOCK_WAIT_EX */ + const char* file_name;/* File name where the lock was obtained */ + ulint line; /* Line where the rw-lock was locked */ + UT_LIST_NODE_T(rw_lock_debug_t) list; + /* Debug structs are linked in a two-way + list */ +}; +#endif /* UNIV_SYNC_DEBUG */ + +#ifndef UNIV_NONINL +#include "sync0rw.ic" +#endif + +#endif === added file 'storage/xtradb/include/sync0rw.ic' --- a/storage/xtradb/include/sync0rw.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/sync0rw.ic 2009-06-11 12:53:26 +0000 @@ -0,0 +1,635 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. +Copyright (c) 2008, Google Inc. + +Portions of this file contain modifications contributed and copyrighted by +Google, Inc. Those modifications are gratefully acknowledged and are described +briefly in the InnoDB documentation. The contributions by Google are +incorporated with their permission, and subject to the conditions contained in +the file COPYING.Google. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +The read-write lock (for threads) + +Created 9/11/1995 Heikki Tuuri +*******************************************************/ + +/********************************************************************** +Lock an rw-lock in shared mode for the current thread. If the rw-lock is +locked in exclusive mode, or there is an exclusive lock request waiting, +the function spins a preset time (controlled by SYNC_SPIN_ROUNDS), +waiting for the lock before suspending the thread. */ +UNIV_INTERN +void +rw_lock_s_lock_spin( +/*================*/ + rw_lock_t* lock, /* in: pointer to rw-lock */ + ulint pass, /* in: pass value; != 0, if the lock will + be passed to another thread to unlock */ + const char* file_name,/* in: file name where lock requested */ + ulint line); /* in: line where requested */ +#ifdef UNIV_SYNC_DEBUG +/********************************************************************** +Inserts the debug information for an rw-lock. */ +UNIV_INTERN +void +rw_lock_add_debug_info( +/*===================*/ + rw_lock_t* lock, /* in: rw-lock */ + ulint pass, /* in: pass value */ + ulint lock_type, /* in: lock type */ + const char* file_name, /* in: file where requested */ + ulint line); /* in: line where requested */ +/********************************************************************** +Removes a debug information struct for an rw-lock. */ +UNIV_INTERN +void +rw_lock_remove_debug_info( +/*======================*/ + rw_lock_t* lock, /* in: rw-lock */ + ulint pass, /* in: pass value */ + ulint lock_type); /* in: lock type */ +#endif /* UNIV_SYNC_DEBUG */ + +/************************************************************************ +Accessor functions for rw lock. */ +UNIV_INLINE +ulint +rw_lock_get_waiters( +/*================*/ + /* out: 1 if waiters, 0 otherwise */ + rw_lock_t* lock) /* in: rw-lock */ +{ + return(lock->waiters); +} + +/************************************************************************ +Sets lock->waiters to 1. It is not an error if lock->waiters is already +1. On platforms where ATOMIC builtins are used this function enforces a +memory barrier. */ +UNIV_INLINE +void +rw_lock_set_waiter_flag( +/*====================*/ + rw_lock_t* lock) /* in: rw-lock */ +{ +#ifdef INNODB_RW_LOCKS_USE_ATOMICS + os_compare_and_swap(&lock->waiters, 0, 1); +#else /* INNODB_RW_LOCKS_USE_ATOMICS */ + lock->waiters = 1; +#endif /* INNODB_RW_LOCKS_USE_ATOMICS */ +} + +/************************************************************************ +Resets lock->waiters to 0. It is not an error if lock->waiters is already +0. On platforms where ATOMIC builtins are used this function enforces a +memory barrier. */ +UNIV_INLINE +void +rw_lock_reset_waiter_flag( +/*======================*/ + rw_lock_t* lock) /* in: rw-lock */ +{ +#ifdef INNODB_RW_LOCKS_USE_ATOMICS + os_compare_and_swap(&lock->waiters, 1, 0); +#else /* INNODB_RW_LOCKS_USE_ATOMICS */ + lock->waiters = 0; +#endif /* INNODB_RW_LOCKS_USE_ATOMICS */ +} + +/********************************************************************** +Returns the write-status of the lock - this function made more sense +with the old rw_lock implementation. */ +UNIV_INLINE +ulint +rw_lock_get_writer( +/*===============*/ + rw_lock_t* lock) +{ + lint lock_word = lock->lock_word; + if(lock_word > 0) { + /* return NOT_LOCKED in s-lock state, like the writer + member of the old lock implementation. */ + return(RW_LOCK_NOT_LOCKED); + } else if (((-lock_word) % X_LOCK_DECR) == 0) { + return(RW_LOCK_EX); + } else { + ut_ad(lock_word > -X_LOCK_DECR); + return(RW_LOCK_WAIT_EX); + } +} + +/********************************************************************** +Returns number of readers. */ +UNIV_INLINE +ulint +rw_lock_get_reader_count( +/*=====================*/ + rw_lock_t* lock) +{ + lint lock_word = lock->lock_word; + if(lock_word > 0) { + /* s-locked, no x-waiters */ + return(X_LOCK_DECR - lock_word); + } else if (lock_word < 0 && lock_word > -X_LOCK_DECR) { + /* s-locked, with x-waiters */ + return((ulint)(-lock_word)); + } + return(0); +} + +#ifndef INNODB_RW_LOCKS_USE_ATOMICS +UNIV_INLINE +mutex_t* +rw_lock_get_mutex( +/*==============*/ + rw_lock_t* lock) +{ + return(&(lock->mutex)); +} +#endif + +/********************************************************************** +Returns the value of writer_count for the lock. Does not reserve the lock +mutex, so the caller must be sure it is not changed during the call. */ +UNIV_INLINE +ulint +rw_lock_get_x_lock_count( +/*=====================*/ + /* out: value of writer_count */ + rw_lock_t* lock) /* in: rw-lock */ +{ + lint lock_copy = lock->lock_word; + /* If there is a reader, lock_word is not divisible by X_LOCK_DECR */ + if(lock_copy > 0 || (-lock_copy) % X_LOCK_DECR != 0) { + return(0); + } + return(((-lock_copy) / X_LOCK_DECR) + 1); +} + +/********************************************************************** +Two different implementations for decrementing the lock_word of a rw_lock: +one for systems supporting atomic operations, one for others. This does +does not support recusive x-locks: they should be handled by the caller and +need not be atomic since they are performed by the current lock holder. +Returns true if the decrement was made, false if not. */ +UNIV_INLINE +ibool +rw_lock_lock_word_decr( +/*===================*/ + /* out: TRUE if decr occurs */ + rw_lock_t* lock, /* in: rw-lock */ + ulint amount) /* in: amount of decrement */ +{ + +#ifdef INNODB_RW_LOCKS_USE_ATOMICS + + lint local_lock_word = lock->lock_word; + while (local_lock_word > 0) { + if(os_compare_and_swap(&(lock->lock_word), + local_lock_word, + local_lock_word - amount)) { + return(TRUE); + } + local_lock_word = lock->lock_word; + } + return(FALSE); + +#else /* INNODB_RW_LOCKS_USE_ATOMICS */ + + ibool success = FALSE; + mutex_enter(&(lock->mutex)); + if(lock->lock_word > 0) { + lock->lock_word -= amount; + success = TRUE; + } + mutex_exit(&(lock->mutex)); + return(success); + +#endif /* INNODB_RW_LOCKS_USE_ATOMICS */ +} + +/********************************************************************** +Two different implementations for incrementing the lock_word of a rw_lock: +one for systems supporting atomic operations, one for others. +Returns the value of lock_word after increment. */ +UNIV_INLINE +lint +rw_lock_lock_word_incr( +/*===================*/ + /* out: lock->lock_word after increment */ + rw_lock_t* lock, /* in: rw-lock */ + ulint amount) /* in: amount of increment */ +{ + +#ifdef INNODB_RW_LOCKS_USE_ATOMICS + + return(os_atomic_increment(&(lock->lock_word), amount)); + +#else /* INNODB_RW_LOCKS_USE_ATOMICS */ + + lint local_lock_word; + + mutex_enter(&(lock->mutex)); + + lock->lock_word += amount; + local_lock_word = lock->lock_word; + + mutex_exit(&(lock->mutex)); + + return(local_lock_word); + +#endif /* INNODB_RW_LOCKS_USE_ATOMICS */ +} + +/********************************************************************** +This function sets the lock->writer_thread and lock->recursive fields. +For platforms where we are using atomic builtins instead of lock->mutex +it sets the lock->writer_thread field using atomics to ensure memory +ordering. Note that it is assumed that the caller of this function +effectively owns the lock i.e.: nobody else is allowed to modify +lock->writer_thread at this point in time. +The protocol is that lock->writer_thread MUST be updated BEFORE the +lock->recursive flag is set. */ +UNIV_INLINE +void +rw_lock_set_writer_id_and_recursion_flag( +/*=====================================*/ + rw_lock_t* lock, /* in/out: lock to work on */ + ibool recursive) /* in: TRUE if recursion + allowed */ +{ + os_thread_id_t curr_thread = os_thread_get_curr_id(); + +#ifdef INNODB_RW_LOCKS_USE_ATOMICS + os_thread_id_t local_thread; + ibool success; + + /* Prevent Valgrind warnings about writer_thread being + uninitialized. It does not matter if writer_thread is + uninitialized, because we are comparing writer_thread against + itself, and the operation should always succeed. */ + UNIV_MEM_VALID(&lock->writer_thread, sizeof lock->writer_thread); + + local_thread = lock->writer_thread; + success = os_compare_and_swap(&lock->writer_thread, + local_thread, curr_thread); + ut_a(success); + lock->recursive = recursive; + +#else /* INNODB_RW_LOCKS_USE_ATOMICS */ + + mutex_enter(&lock->mutex); + lock->writer_thread = curr_thread; + lock->recursive = recursive; + mutex_exit(&lock->mutex); + +#endif /* INNODB_RW_LOCKS_USE_ATOMICS */ +} + +/********************************************************************** +Low-level function which tries to lock an rw-lock in s-mode. Performs no +spinning. */ +UNIV_INLINE +ibool +rw_lock_s_lock_low( +/*===============*/ + /* out: TRUE if success */ + rw_lock_t* lock, /* in: pointer to rw-lock */ + ulint pass __attribute__((unused)), + /* in: pass value; != 0, if the lock will be + passed to another thread to unlock */ + const char* file_name, /* in: file name where lock requested */ + ulint line) /* in: line where requested */ +{ + /* TODO: study performance of UNIV_LIKELY branch prediction hints. */ + if (!rw_lock_lock_word_decr(lock, 1)) { + /* Locking did not succeed */ + return(FALSE); + } + +#ifdef UNIV_SYNC_DEBUG + rw_lock_add_debug_info(lock, pass, RW_LOCK_SHARED, file_name, line); +#endif + /* These debugging values are not set safely: they may be incorrect + or even refer to a line that is invalid for the file name. */ + lock->last_s_file_name = file_name; + lock->last_s_line = line; + + return(TRUE); /* locking succeeded */ +} + +/********************************************************************** +Low-level function which locks an rw-lock in s-mode when we know that it +is possible and none else is currently accessing the rw-lock structure. +Then we can do the locking without reserving the mutex. */ +UNIV_INLINE +void +rw_lock_s_lock_direct( +/*==================*/ + rw_lock_t* lock, /* in: pointer to rw-lock */ + const char* file_name, /* in: file name where requested */ + ulint line) /* in: line where lock requested */ +{ + ut_ad(lock->lock_word == X_LOCK_DECR); + + /* Indicate there is a new reader by decrementing lock_word */ + lock->lock_word--; + + lock->last_s_file_name = file_name; + lock->last_s_line = line; + +#ifdef UNIV_SYNC_DEBUG + rw_lock_add_debug_info(lock, 0, RW_LOCK_SHARED, file_name, line); +#endif +} + +/********************************************************************** +Low-level function which locks an rw-lock in x-mode when we know that it +is not locked and none else is currently accessing the rw-lock structure. +Then we can do the locking without reserving the mutex. */ +UNIV_INLINE +void +rw_lock_x_lock_direct( +/*==================*/ + rw_lock_t* lock, /* in: pointer to rw-lock */ + const char* file_name, /* in: file name where requested */ + ulint line) /* in: line where lock requested */ +{ + ut_ad(rw_lock_validate(lock)); + ut_ad(lock->lock_word == X_LOCK_DECR); + + lock->lock_word -= X_LOCK_DECR; + lock->writer_thread = os_thread_get_curr_id(); + lock->recursive = TRUE; + + lock->last_x_file_name = file_name; + lock->last_x_line = line; + +#ifdef UNIV_SYNC_DEBUG + rw_lock_add_debug_info(lock, 0, RW_LOCK_EX, file_name, line); +#endif +} + +/********************************************************************** +NOTE! Use the corresponding macro, not directly this function! Lock an +rw-lock in shared mode for the current thread. If the rw-lock is locked +in exclusive mode, or there is an exclusive lock request waiting, the +function spins a preset time (controlled by SYNC_SPIN_ROUNDS), waiting for +the lock, before suspending the thread. */ +UNIV_INLINE +void +rw_lock_s_lock_func( +/*================*/ + rw_lock_t* lock, /* in: pointer to rw-lock */ + ulint pass, /* in: pass value; != 0, if the lock will + be passed to another thread to unlock */ + const char* file_name,/* in: file name where lock requested */ + ulint line) /* in: line where requested */ +{ + /* NOTE: As we do not know the thread ids for threads which have + s-locked a latch, and s-lockers will be served only after waiting + x-lock requests have been fulfilled, then if this thread already + owns an s-lock here, it may end up in a deadlock with another thread + which requests an x-lock here. Therefore, we will forbid recursive + s-locking of a latch: the following assert will warn the programmer + of the possibility of this kind of a deadlock. If we want to implement + safe recursive s-locking, we should keep in a list the thread ids of + the threads which have s-locked a latch. This would use some CPU + time. */ + +#ifdef UNIV_SYNC_DEBUG + ut_ad(!rw_lock_own(lock, RW_LOCK_SHARED)); /* see NOTE above */ +#endif /* UNIV_SYNC_DEBUG */ + + /* TODO: study performance of UNIV_LIKELY branch prediction hints. */ + if (rw_lock_s_lock_low(lock, pass, file_name, line)) { + + return; /* Success */ + } else { + /* Did not succeed, try spin wait */ + + rw_lock_s_lock_spin(lock, pass, file_name, line); + + return; + } +} + +/********************************************************************** +NOTE! Use the corresponding macro, not directly this function! Lock an +rw-lock in exclusive mode for the current thread if the lock can be +obtained immediately. */ +UNIV_INLINE +ibool +rw_lock_x_lock_func_nowait( +/*=======================*/ + /* out: TRUE if success */ + rw_lock_t* lock, /* in: pointer to rw-lock */ + const char* file_name,/* in: file name where lock requested */ + ulint line) /* in: line where requested */ +{ + os_thread_id_t curr_thread = os_thread_get_curr_id(); + + ibool success; + +#ifdef INNODB_RW_LOCKS_USE_ATOMICS + success = os_compare_and_swap(&(lock->lock_word), X_LOCK_DECR, 0); +#else + + success = FALSE; + mutex_enter(&(lock->mutex)); + if (lock->lock_word == X_LOCK_DECR) { + lock->lock_word = 0; + success = TRUE; + } + mutex_exit(&(lock->mutex)); + +#endif + if (success) { + rw_lock_set_writer_id_and_recursion_flag(lock, TRUE); + + } else if (lock->recursive + && os_thread_eq(lock->writer_thread, curr_thread)) { + /* Relock: this lock_word modification is safe since no other + threads can modify (lock, unlock, or reserve) lock_word while + there is an exclusive writer and this is the writer thread. */ + lock->lock_word -= X_LOCK_DECR; + + ut_ad(((-lock->lock_word) % X_LOCK_DECR) == 0); + + } else { + /* Failure */ + return(FALSE); + } +#ifdef UNIV_SYNC_DEBUG + rw_lock_add_debug_info(lock, 0, RW_LOCK_EX, file_name, line); +#endif + + lock->last_x_file_name = file_name; + lock->last_x_line = line; + + ut_ad(rw_lock_validate(lock)); + + return(TRUE); +} + +/********************************************************************** +Releases a shared mode lock. */ +UNIV_INLINE +void +rw_lock_s_unlock_func( +/*==================*/ + rw_lock_t* lock /* in: rw-lock */ +#ifdef UNIV_SYNC_DEBUG + ,ulint pass /* in: pass value; != 0, if the lock may have + been passed to another thread to unlock */ +#endif + ) +{ + ut_ad((lock->lock_word % X_LOCK_DECR) != 0); + +#ifdef UNIV_SYNC_DEBUG + rw_lock_remove_debug_info(lock, pass, RW_LOCK_SHARED); +#endif + + /* Increment lock_word to indicate 1 less reader */ + if (rw_lock_lock_word_incr(lock, 1) == 0) { + + /* wait_ex waiter exists. It may not be asleep, but we signal + anyway. We do not wake other waiters, because they can't + exist without wait_ex waiter and wait_ex waiter goes first.*/ + os_event_set(lock->wait_ex_event); + sync_array_object_signalled(sync_primary_wait_array); + + } + + ut_ad(rw_lock_validate(lock)); + +#ifdef UNIV_SYNC_PERF_STAT + rw_s_exit_count++; +#endif +} + +/********************************************************************** +Releases a shared mode lock when we know there are no waiters and none +else will access the lock during the time this function is executed. */ +UNIV_INLINE +void +rw_lock_s_unlock_direct( +/*====================*/ + rw_lock_t* lock) /* in: rw-lock */ +{ + ut_ad(lock->lock_word < X_LOCK_DECR); + +#ifdef UNIV_SYNC_DEBUG + rw_lock_remove_debug_info(lock, 0, RW_LOCK_SHARED); +#endif + + /* Decrease reader count by incrementing lock_word */ + lock->lock_word++; + + ut_ad(!lock->waiters); + ut_ad(rw_lock_validate(lock)); +#ifdef UNIV_SYNC_PERF_STAT + rw_s_exit_count++; +#endif +} + +/********************************************************************** +Releases an exclusive mode lock. */ +UNIV_INLINE +void +rw_lock_x_unlock_func( +/*==================*/ + rw_lock_t* lock /* in: rw-lock */ +#ifdef UNIV_SYNC_DEBUG + ,ulint pass /* in: pass value; != 0, if the lock may have + been passed to another thread to unlock */ +#endif + ) +{ + ut_ad((lock->lock_word % X_LOCK_DECR) == 0); + + /* lock->recursive flag also indicates if lock->writer_thread is + valid or stale. If we are the last of the recursive callers + then we must unset lock->recursive flag to indicate that the + lock->writer_thread is now stale. + Note that since we still hold the x-lock we can safely read the + lock_word. */ + if (lock->lock_word == 0) { + /* Last caller in a possible recursive chain. */ + lock->recursive = FALSE; + UNIV_MEM_INVALID(&lock->writer_thread, + sizeof lock->writer_thread); + } + +#ifdef UNIV_SYNC_DEBUG + rw_lock_remove_debug_info(lock, pass, RW_LOCK_EX); +#endif + + if (rw_lock_lock_word_incr(lock, X_LOCK_DECR) == X_LOCK_DECR) { + /* Lock is now free. May have to signal read/write waiters. + We do not need to signal wait_ex waiters, since they cannot + exist when there is a writer. */ + if (lock->waiters) { + rw_lock_reset_waiter_flag(lock); + os_event_set(lock->event); + sync_array_object_signalled(sync_primary_wait_array); + } + } + + ut_ad(rw_lock_validate(lock)); + +#ifdef UNIV_SYNC_PERF_STAT + rw_x_exit_count++; +#endif +} + +/********************************************************************** +Releases an exclusive mode lock when we know there are no waiters, and +none else will access the lock during the time this function is executed. */ +UNIV_INLINE +void +rw_lock_x_unlock_direct( +/*====================*/ + rw_lock_t* lock) /* in: rw-lock */ +{ + /* Reset the exclusive lock if this thread no longer has an x-mode + lock */ + + ut_ad((lock->lock_word % X_LOCK_DECR) == 0); + +#ifdef UNIV_SYNC_DEBUG + rw_lock_remove_debug_info(lock, 0, RW_LOCK_EX); +#endif + + if (lock->lock_word == 0) { + lock->recursive = FALSE; + UNIV_MEM_INVALID(&lock->writer_thread, + sizeof lock->writer_thread); + } + + lock->lock_word += X_LOCK_DECR; + + ut_ad(!lock->waiters); + ut_ad(rw_lock_validate(lock)); + +#ifdef UNIV_SYNC_PERF_STAT + rw_x_exit_count++; +#endif +} === added file 'storage/xtradb/include/sync0sync.h' --- a/storage/xtradb/include/sync0sync.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/sync0sync.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,569 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. +Copyright (c) 2008, Google Inc. + +Portions of this file contain modifications contributed and copyrighted by +Google, Inc. Those modifications are gratefully acknowledged and are described +briefly in the InnoDB documentation. The contributions by Google are +incorporated with their permission, and subject to the conditions contained in +the file COPYING.Google. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Mutex, the basic synchronization primitive + +Created 9/5/1995 Heikki Tuuri +*******************************************************/ + +#ifndef sync0sync_h +#define sync0sync_h + +#include "univ.i" +#include "sync0types.h" +#include "ut0lst.h" +#include "ut0mem.h" +#include "os0thread.h" +#include "os0sync.h" +#include "sync0arr.h" + +#ifndef UNIV_HOTBACKUP +extern my_bool timed_mutexes; +#endif /* UNIV_HOTBACKUP */ + +/********************************************************************** +Initializes the synchronization data structures. */ +UNIV_INTERN +void +sync_init(void); +/*===========*/ +/********************************************************************** +Frees the resources in synchronization data structures. */ +UNIV_INTERN +void +sync_close(void); +/*===========*/ +/********************************************************************** +Creates, or rather, initializes a mutex object to a specified memory +location (which must be appropriately aligned). The mutex is initialized +in the reset state. Explicit freeing of the mutex with mutex_free is +necessary only if the memory block containing it is freed. */ + +#ifdef UNIV_DEBUG +# ifdef UNIV_SYNC_DEBUG +# define mutex_create(M, level) \ + mutex_create_func((M), #M, (level), __FILE__, __LINE__) +# else +# define mutex_create(M, level) \ + mutex_create_func((M), #M, __FILE__, __LINE__) +# endif +#else +# define mutex_create(M, level) \ + mutex_create_func((M), __FILE__, __LINE__) +#endif + +/********************************************************************** +Creates, or rather, initializes a mutex object in a specified memory +location (which must be appropriately aligned). The mutex is initialized +in the reset state. Explicit freeing of the mutex with mutex_free is +necessary only if the memory block containing it is freed. */ +UNIV_INTERN +void +mutex_create_func( +/*==============*/ + mutex_t* mutex, /* in: pointer to memory */ +#ifdef UNIV_DEBUG + const char* cmutex_name, /* in: mutex name */ +# ifdef UNIV_SYNC_DEBUG + ulint level, /* in: level */ +# endif /* UNIV_SYNC_DEBUG */ +#endif /* UNIV_DEBUG */ + const char* cfile_name, /* in: file name where created */ + ulint cline); /* in: file line where created */ + +#undef mutex_free /* Fix for MacOS X */ + +/********************************************************************** +Calling this function is obligatory only if the memory buffer containing +the mutex is freed. Removes a mutex object from the mutex list. The mutex +is checked to be in the reset state. */ +UNIV_INTERN +void +mutex_free( +/*=======*/ + mutex_t* mutex); /* in: mutex */ +/****************************************************************** +NOTE! The following macro should be used in mutex locking, not the +corresponding function. */ + +#define mutex_enter(M) mutex_enter_func((M), __FILE__, __LINE__) +/****************************************************************** +NOTE! The following macro should be used in mutex locking, not the +corresponding function. */ + +/* NOTE! currently same as mutex_enter! */ + +#define mutex_enter_fast(M) mutex_enter_func((M), __FILE__, __LINE__) +/********************************************************************** +NOTE! Use the corresponding macro in the header file, not this function +directly. Locks a mutex for the current thread. If the mutex is reserved +the function spins a preset time (controlled by SYNC_SPIN_ROUNDS) waiting +for the mutex before suspending the thread. */ +UNIV_INLINE +void +mutex_enter_func( +/*=============*/ + mutex_t* mutex, /* in: pointer to mutex */ + const char* file_name, /* in: file name where locked */ + ulint line); /* in: line where locked */ +/****************************************************************** +NOTE! The following macro should be used in mutex locking, not the +corresponding function. */ + +#define mutex_enter_nowait(M) \ + mutex_enter_nowait_func((M), __FILE__, __LINE__) +/************************************************************************ +NOTE! Use the corresponding macro in the header file, not this function +directly. Tries to lock the mutex for the current thread. If the lock is not +acquired immediately, returns with return value 1. */ +UNIV_INTERN +ulint +mutex_enter_nowait_func( +/*====================*/ + /* out: 0 if succeed, 1 if not */ + mutex_t* mutex, /* in: pointer to mutex */ + const char* file_name, /* in: file name where mutex + requested */ + ulint line); /* in: line where requested */ +/********************************************************************** +Unlocks a mutex owned by the current thread. */ +UNIV_INLINE +void +mutex_exit( +/*=======*/ + mutex_t* mutex); /* in: pointer to mutex */ +/********************************************************************** +Returns TRUE if no mutex or rw-lock is currently locked. +Works only in the debug version. */ +UNIV_INTERN +ibool +sync_all_freed(void); +/*================*/ +/*##################################################################### +FUNCTION PROTOTYPES FOR DEBUGGING */ +/*********************************************************************** +Prints wait info of the sync system. */ +UNIV_INTERN +void +sync_print_wait_info( +/*=================*/ + FILE* file); /* in: file where to print */ +/*********************************************************************** +Prints info of the sync system. */ +UNIV_INTERN +void +sync_print( +/*=======*/ + FILE* file); /* in: file where to print */ +#ifdef UNIV_DEBUG +/********************************************************************** +Checks that the mutex has been initialized. */ +UNIV_INTERN +ibool +mutex_validate( +/*===========*/ + const mutex_t* mutex); +/********************************************************************** +Checks that the current thread owns the mutex. Works only +in the debug version. */ +UNIV_INTERN +ibool +mutex_own( +/*======*/ + /* out: TRUE if owns */ + const mutex_t* mutex); /* in: mutex */ +#endif /* UNIV_DEBUG */ +#ifdef UNIV_SYNC_DEBUG +/********************************************************************** +Adds a latch and its level in the thread level array. Allocates the memory +for the array if called first time for this OS thread. Makes the checks +against other latch levels stored in the array for this thread. */ +UNIV_INTERN +void +sync_thread_add_level( +/*==================*/ + void* latch, /* in: pointer to a mutex or an rw-lock */ + ulint level); /* in: level in the latching order; if + SYNC_LEVEL_VARYING, nothing is done */ +/********************************************************************** +Removes a latch from the thread level array if it is found there. */ +UNIV_INTERN +ibool +sync_thread_reset_level( +/*====================*/ + /* out: TRUE if found from the array; it is no error + if the latch is not found, as we presently are not + able to determine the level for every latch + reservation the program does */ + void* latch); /* in: pointer to a mutex or an rw-lock */ +/********************************************************************** +Checks that the level array for the current thread is empty. */ +UNIV_INTERN +ibool +sync_thread_levels_empty(void); +/*==========================*/ + /* out: TRUE if empty */ +/********************************************************************** +Checks that the level array for the current thread is empty. */ +UNIV_INTERN +ibool +sync_thread_levels_empty_gen( +/*=========================*/ + /* out: TRUE if empty except the + exceptions specified below */ + ibool dict_mutex_allowed); /* in: TRUE if dictionary mutex is + allowed to be owned by the thread, + also purge_is_running mutex is + allowed */ +/********************************************************************** +Gets the debug information for a reserved mutex. */ +UNIV_INTERN +void +mutex_get_debug_info( +/*=================*/ + mutex_t* mutex, /* in: mutex */ + const char** file_name, /* out: file where requested */ + ulint* line, /* out: line where requested */ + os_thread_id_t* thread_id); /* out: id of the thread which owns + the mutex */ +/********************************************************************** +Counts currently reserved mutexes. Works only in the debug version. */ +UNIV_INTERN +ulint +mutex_n_reserved(void); +/*==================*/ +#endif /* UNIV_SYNC_DEBUG */ +/********************************************************************** +NOT to be used outside this module except in debugging! Gets the value +of the lock word. */ +UNIV_INLINE +byte +mutex_get_lock_word( +/*================*/ + const mutex_t* mutex); /* in: mutex */ +#ifdef UNIV_SYNC_DEBUG +/********************************************************************** +NOT to be used outside this module except in debugging! Gets the waiters +field in a mutex. */ +UNIV_INLINE +ulint +mutex_get_waiters( +/*==============*/ + /* out: value to set */ + const mutex_t* mutex); /* in: mutex */ +#endif /* UNIV_SYNC_DEBUG */ + +/* + LATCHING ORDER WITHIN THE DATABASE + ================================== + +The mutex or latch in the central memory object, for instance, a rollback +segment object, must be acquired before acquiring the latch or latches to +the corresponding file data structure. In the latching order below, these +file page object latches are placed immediately below the corresponding +central memory object latch or mutex. + +Synchronization object Notes +---------------------- ----- + +Dictionary mutex If we have a pointer to a dictionary +| object, e.g., a table, it can be +| accessed without reserving the +| dictionary mutex. We must have a +| reservation, a memoryfix, to the +| appropriate table object in this case, +| and the table must be explicitly +| released later. +V +Dictionary header +| +V +Secondary index tree latch The tree latch protects also all +| the B-tree non-leaf pages. These +V can be read with the page only +Secondary index non-leaf bufferfixed to save CPU time, +| no s-latch is needed on the page. +| Modification of a page requires an +| x-latch on the page, however. If a +| thread owns an x-latch to the tree, +| it is allowed to latch non-leaf pages +| even after it has acquired the fsp +| latch. +V +Secondary index leaf The latch on the secondary index leaf +| can be kept while accessing the +| clustered index, to save CPU time. +V +Clustered index tree latch To increase concurrency, the tree +| latch is usually released when the +| leaf page latch has been acquired. +V +Clustered index non-leaf +| +V +Clustered index leaf +| +V +Transaction system header +| +V +Transaction undo mutex The undo log entry must be written +| before any index page is modified. +| Transaction undo mutex is for the undo +| logs the analogue of the tree latch +| for a B-tree. If a thread has the +| trx undo mutex reserved, it is allowed +| to latch the undo log pages in any +| order, and also after it has acquired +| the fsp latch. +V +Rollback segment mutex The rollback segment mutex must be +| reserved, if, e.g., a new page must +| be added to an undo log. The rollback +| segment and the undo logs in its +| history list can be seen as an +| analogue of a B-tree, and the latches +| reserved similarly, using a version of +| lock-coupling. If an undo log must be +| extended by a page when inserting an +| undo log record, this corresponds to +| a pessimistic insert in a B-tree. +V +Rollback segment header +| +V +Purge system latch +| +V +Undo log pages If a thread owns the trx undo mutex, +| or for a log in the history list, the +| rseg mutex, it is allowed to latch +| undo log pages in any order, and even +| after it has acquired the fsp latch. +| If a thread does not have the +| appropriate mutex, it is allowed to +| latch only a single undo log page in +| a mini-transaction. +V +File space management latch If a mini-transaction must allocate +| several file pages, it can do that, +| because it keeps the x-latch to the +| file space management in its memo. +V +File system pages +| +V +Kernel mutex If a kernel operation needs a file +| page allocation, it must reserve the +| fsp x-latch before acquiring the kernel +| mutex. +V +Search system mutex +| +V +Buffer pool mutex +| +V +Log mutex +| +Any other latch +| +V +Memory pool mutex */ + +/* Latching order levels */ + +/* User transaction locks are higher than any of the latch levels below: +no latches are allowed when a thread goes to wait for a normal table +or row lock! */ +#define SYNC_USER_TRX_LOCK 9999 +#define SYNC_NO_ORDER_CHECK 3000 /* this can be used to suppress + latching order checking */ +#define SYNC_LEVEL_VARYING 2000 /* Level is varying. Only used with + buffer pool page locks, which do not + have a fixed level, but instead have + their level set after the page is + locked; see e.g. + ibuf_bitmap_get_map_page(). */ +#define SYNC_TRX_I_S_RWLOCK 1910 /* Used for + trx_i_s_cache_t::rw_lock */ +#define SYNC_TRX_I_S_LAST_READ 1900 /* Used for + trx_i_s_cache_t::last_read_mutex */ +#define SYNC_FILE_FORMAT_TAG 1200 /* Used to serialize access to the + file format tag */ +#define SYNC_DICT_OPERATION 1001 /* table create, drop, etc. reserve + this in X-mode, implicit or backround + operations purge, rollback, foreign + key checks reserve this in S-mode */ +#define SYNC_DICT 1000 +#define SYNC_DICT_AUTOINC_MUTEX 999 +#define SYNC_DICT_HEADER 995 +#define SYNC_IBUF_HEADER 914 +#define SYNC_IBUF_PESS_INSERT_MUTEX 912 +#define SYNC_IBUF_MUTEX 910 /* ibuf mutex is really below + SYNC_FSP_PAGE: we assign a value this + high only to make the program to pass + the debug checks */ +/*-------------------------------*/ +#define SYNC_INDEX_TREE 900 +#define SYNC_TREE_NODE_NEW 892 +#define SYNC_TREE_NODE_FROM_HASH 891 +#define SYNC_TREE_NODE 890 +#define SYNC_PURGE_SYS 810 +#define SYNC_PURGE_LATCH 800 +#define SYNC_TRX_UNDO 700 +#define SYNC_RSEG 600 +#define SYNC_RSEG_HEADER_NEW 591 +#define SYNC_RSEG_HEADER 590 +#define SYNC_TRX_UNDO_PAGE 570 +#define SYNC_EXTERN_STORAGE 500 +#define SYNC_FSP 400 +#define SYNC_FSP_PAGE 395 +/*------------------------------------- Insert buffer headers */ +/*------------------------------------- ibuf_mutex */ +/*------------------------------------- Insert buffer tree */ +#define SYNC_IBUF_BITMAP_MUTEX 351 +#define SYNC_IBUF_BITMAP 350 +/*------------------------------------- MySQL query cache mutex */ +/*------------------------------------- MySQL binlog mutex */ +/*-------------------------------*/ +#define SYNC_KERNEL 300 +#define SYNC_REC_LOCK 299 +#define SYNC_TRX_LOCK_HEAP 298 +#define SYNC_TRX_SYS_HEADER 290 +#define SYNC_LOG 170 +#define SYNC_RECV 168 +#define SYNC_WORK_QUEUE 162 +#define SYNC_SEARCH_SYS_CONF 161 /* for assigning btr_search_enabled */ +#define SYNC_SEARCH_SYS 160 /* NOTE that if we have a memory + heap that can be extended to the + buffer pool, its logical level is + SYNC_SEARCH_SYS, as memory allocation + can call routines there! Otherwise + the level is SYNC_MEM_HASH. */ +#define SYNC_BUF_POOL 150 +#define SYNC_BUF_BLOCK 149 +#define SYNC_DOUBLEWRITE 140 +#define SYNC_ANY_LATCH 135 +#define SYNC_THR_LOCAL 133 +#define SYNC_MEM_HASH 131 +#define SYNC_MEM_POOL 130 + +/* Codes used to designate lock operations */ +#define RW_LOCK_NOT_LOCKED 350 +#define RW_LOCK_EX 351 +#define RW_LOCK_EXCLUSIVE 351 +#define RW_LOCK_SHARED 352 +#define RW_LOCK_WAIT_EX 353 +#define SYNC_MUTEX 354 + +/* NOTE! The structure appears here only for the compiler to know its size. +Do not use its fields directly! The structure used in the spin lock +implementation of a mutual exclusion semaphore. */ + +struct mutex_struct { + os_event_t event; /* Used by sync0arr.c for the wait queue */ + byte lock_word; /* This byte is the target of the atomic + test-and-set instruction in Win32 and + x86 32/64 with GCC 4.1.0 or later version */ +#if defined(_WIN32) && defined(UNIV_CAN_USE_X86_ASSEMBLER) +#elif defined(HAVE_GCC_ATOMIC_BUILTINS) +#else + os_fast_mutex_t + os_fast_mutex; /* In other systems we use this OS mutex + in place of lock_word */ +#endif + ulint waiters; /* This ulint is set to 1 if there are (or + may be) threads waiting in the global wait + array for this mutex to be released. + Otherwise, this is 0. */ + UT_LIST_NODE_T(mutex_t) list; /* All allocated mutexes are put into + a list. Pointers to the next and prev. */ +#ifdef UNIV_SYNC_DEBUG + const char* file_name; /* File where the mutex was locked */ + ulint line; /* Line where the mutex was locked */ + ulint level; /* Level in the global latching order */ +#endif /* UNIV_SYNC_DEBUG */ + const char* cfile_name;/* File name where mutex created */ + ulint cline; /* Line where created */ +#ifdef UNIV_DEBUG + os_thread_id_t thread_id; /* The thread id of the thread + which locked the mutex. */ + ulint magic_n; +# define MUTEX_MAGIC_N (ulint)979585 +#endif /* UNIV_DEBUG */ +#ifndef UNIV_HOTBACKUP + ulong count_os_wait; /* count of os_wait */ +# ifdef UNIV_DEBUG + ulong count_using; /* count of times mutex used */ + ulong count_spin_loop; /* count of spin loops */ + ulong count_spin_rounds; /* count of spin rounds */ + ulong count_os_yield; /* count of os_wait */ + ulonglong lspent_time; /* mutex os_wait timer msec */ + ulonglong lmax_spent_time; /* mutex os_wait timer msec */ + const char* cmutex_name;/* mutex name */ + ulint mutex_type;/* 0 - usual mutex 1 - rw_lock mutex */ +# endif /* UNIV_DEBUG */ +#endif /* !UNIV_HOTBACKUP */ +}; + +/* The global array of wait cells for implementation of the databases own +mutexes and read-write locks. Appears here for debugging purposes only! */ + +extern sync_array_t* sync_primary_wait_array; + +/* Constant determining how long spin wait is continued before suspending +the thread. A value 600 rounds on a 1995 100 MHz Pentium seems to correspond +to 20 microseconds. */ + +#define SYNC_SPIN_ROUNDS srv_n_spin_wait_rounds + +/* The number of system calls made in this module. Intended for performance +monitoring. */ + +extern ib_int64_t mutex_exit_count; + +#ifdef UNIV_SYNC_DEBUG +/* Latching order checks start when this is set TRUE */ +extern ibool sync_order_checks_on; +#endif /* UNIV_SYNC_DEBUG */ + +/* This variable is set to TRUE when sync_init is called */ +extern ibool sync_initialized; + +/* Global list of database mutexes (not OS mutexes) created. */ +typedef UT_LIST_BASE_NODE_T(mutex_t) ut_list_base_node_t; +extern ut_list_base_node_t mutex_list; + +/* Mutex protecting the mutex_list variable */ +extern mutex_t mutex_list_mutex; + + +#ifndef UNIV_NONINL +#include "sync0sync.ic" +#endif + +#endif === added file 'storage/xtradb/include/sync0sync.ic' --- a/storage/xtradb/include/sync0sync.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/sync0sync.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,270 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. +Copyright (c) 2008, Google Inc. + +Portions of this file contain modifications contributed and copyrighted by +Google, Inc. Those modifications are gratefully acknowledged and are described +briefly in the InnoDB documentation. The contributions by Google are +incorporated with their permission, and subject to the conditions contained in +the file COPYING.Google. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Mutex, the basic synchronization primitive + +Created 9/5/1995 Heikki Tuuri +*******************************************************/ + +/********************************************************************** +Sets the waiters field in a mutex. */ +UNIV_INTERN +void +mutex_set_waiters( +/*==============*/ + mutex_t* mutex, /* in: mutex */ + ulint n); /* in: value to set */ +/********************************************************************** +Reserves a mutex for the current thread. If the mutex is reserved, the +function spins a preset time (controlled by SYNC_SPIN_ROUNDS) waiting +for the mutex before suspending the thread. */ +UNIV_INTERN +void +mutex_spin_wait( +/*============*/ + mutex_t* mutex, /* in: pointer to mutex */ + const char* file_name, /* in: file name where mutex + requested */ + ulint line); /* in: line where requested */ +#ifdef UNIV_SYNC_DEBUG +/********************************************************************** +Sets the debug information for a reserved mutex. */ +UNIV_INTERN +void +mutex_set_debug_info( +/*=================*/ + mutex_t* mutex, /* in: mutex */ + const char* file_name, /* in: file where requested */ + ulint line); /* in: line where requested */ +#endif /* UNIV_SYNC_DEBUG */ +/********************************************************************** +Releases the threads waiting in the primary wait array for this mutex. */ +UNIV_INTERN +void +mutex_signal_object( +/*================*/ + mutex_t* mutex); /* in: mutex */ + +/********************************************************************** +Performs an atomic test-and-set instruction to the lock_word field of a +mutex. */ +UNIV_INLINE +byte +mutex_test_and_set( +/*===============*/ + /* out: the previous value of lock_word: 0 or + 1 */ + mutex_t* mutex) /* in: mutex */ +{ +#if defined(_WIN32) && defined(UNIV_CAN_USE_X86_ASSEMBLER) + byte res; + byte* lw; /* assembler code is used to ensure that + lock_word is loaded from memory */ + ut_ad(mutex); + ut_ad(sizeof(byte) == 1); + + lw = &(mutex->lock_word); + + __asm MOV ECX, lw + __asm MOV EDX, 1 + __asm XCHG DL, BYTE PTR [ECX] + __asm MOV res, DL + + /* The fence below would prevent this thread from + reading the data structure protected by the mutex + before the test-and-set operation is committed, but + the fence is apparently not needed: + + In a posting to comp.arch newsgroup (August 10, 1997) + Andy Glew said that in P6 a LOCKed instruction like + XCHG establishes a fence with respect to memory reads + and writes and thus an explicit fence is not + needed. In P5 he seemed to agree with a previous + newsgroup poster that LOCKed instructions serialize + all instruction execution, and, consequently, also + memory operations. This is confirmed in Intel Software + Dev. Manual, Vol. 3. */ + + /* mutex_fence(); */ + + return(res); +#elif defined(HAVE_GCC_ATOMIC_BUILTINS) + return __sync_lock_test_and_set(&(mutex->lock_word), 1); +#else + ibool ret; + + ret = os_fast_mutex_trylock(&(mutex->os_fast_mutex)); + + if (ret == 0) { + /* We check that os_fast_mutex_trylock does not leak + and allow race conditions */ + ut_a(mutex->lock_word == 0); + + mutex->lock_word = 1; + } + + return((byte)ret); +#endif +} + +/********************************************************************** +Performs a reset instruction to the lock_word field of a mutex. This +instruction also serializes memory operations to the program order. */ +UNIV_INLINE +void +mutex_reset_lock_word( +/*==================*/ + mutex_t* mutex) /* in: mutex */ +{ +#if defined(_WIN32) && defined(UNIV_CAN_USE_X86_ASSEMBLER) + byte* lw; /* assembler code is used to ensure that + lock_word is loaded from memory */ + ut_ad(mutex); + + lw = &(mutex->lock_word); + + __asm MOV EDX, 0 + __asm MOV ECX, lw + __asm XCHG DL, BYTE PTR [ECX] +#elif defined(HAVE_GCC_ATOMIC_BUILTINS) + /* In theory __sync_lock_release should be used to release the lock. + Unfortunately, it does not work properly alone. The workaround is + that more conservative __sync_lock_test_and_set is used instead. */ + __sync_lock_test_and_set(&(mutex->lock_word), 0); +#else + mutex->lock_word = 0; + + os_fast_mutex_unlock(&(mutex->os_fast_mutex)); +#endif +} + +/********************************************************************** +Gets the value of the lock word. */ +UNIV_INLINE +byte +mutex_get_lock_word( +/*================*/ + const mutex_t* mutex) /* in: mutex */ +{ + const volatile byte* ptr; /* declared volatile to ensure that + lock_word is loaded from memory */ + ut_ad(mutex); + + ptr = &(mutex->lock_word); + + return(*ptr); +} + +/********************************************************************** +Gets the waiters field in a mutex. */ +UNIV_INLINE +ulint +mutex_get_waiters( +/*==============*/ + /* out: value to set */ + const mutex_t* mutex) /* in: mutex */ +{ + const volatile ulint* ptr; /* declared volatile to ensure that + the value is read from memory */ + ut_ad(mutex); + + ptr = &(mutex->waiters); + + return(*ptr); /* Here we assume that the read of a single + word from memory is atomic */ +} + +/********************************************************************** +Unlocks a mutex owned by the current thread. */ +UNIV_INLINE +void +mutex_exit( +/*=======*/ + mutex_t* mutex) /* in: pointer to mutex */ +{ + ut_ad(mutex_own(mutex)); + + ut_d(mutex->thread_id = (os_thread_id_t) ULINT_UNDEFINED); + +#ifdef UNIV_SYNC_DEBUG + sync_thread_reset_level(mutex); +#endif + mutex_reset_lock_word(mutex); + + /* A problem: we assume that mutex_reset_lock word + is a memory barrier, that is when we read the waiters + field next, the read must be serialized in memory + after the reset. A speculative processor might + perform the read first, which could leave a waiting + thread hanging indefinitely. + + Our current solution call every second + sync_arr_wake_threads_if_sema_free() + to wake up possible hanging threads if + they are missed in mutex_signal_object. */ + + if (mutex_get_waiters(mutex) != 0) { + + mutex_signal_object(mutex); + } + +#ifdef UNIV_SYNC_PERF_STAT + mutex_exit_count++; +#endif +} + +/********************************************************************** +Locks a mutex for the current thread. If the mutex is reserved, the function +spins a preset time (controlled by SYNC_SPIN_ROUNDS), waiting for the mutex +before suspending the thread. */ +UNIV_INLINE +void +mutex_enter_func( +/*=============*/ + mutex_t* mutex, /* in: pointer to mutex */ + const char* file_name, /* in: file name where locked */ + ulint line) /* in: line where locked */ +{ + ut_ad(mutex_validate(mutex)); + ut_ad(!mutex_own(mutex)); + + /* Note that we do not peek at the value of lock_word before trying + the atomic test_and_set; we could peek, and possibly save time. */ + +#if defined UNIV_DEBUG && !defined UNIV_HOTBACKUP + mutex->count_using++; +#endif /* UNIV_DEBUG && !UNIV_HOTBACKUP */ + + if (!mutex_test_and_set(mutex)) { + ut_d(mutex->thread_id = os_thread_get_curr_id()); +#ifdef UNIV_SYNC_DEBUG + mutex_set_debug_info(mutex, file_name, line); +#endif + return; /* Succeeded! */ + } + + mutex_spin_wait(mutex, file_name, line); +} === added file 'storage/xtradb/include/sync0types.h' --- a/storage/xtradb/include/sync0types.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/sync0types.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,31 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Global types for sync + +Created 9/5/1995 Heikki Tuuri +*******************************************************/ + +#ifndef sync0types_h +#define sync0types_h + +#define mutex_t ib_mutex_t +typedef struct mutex_struct mutex_t; + +#endif === added file 'storage/xtradb/include/thr0loc.h' --- a/storage/xtradb/include/thr0loc.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/thr0loc.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,94 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +The thread local storage + +Created 10/5/1995 Heikki Tuuri +*******************************************************/ + +/* This module implements storage private to each thread, +a capability useful in some situations like storing the +OS handle to the current thread, or its priority. */ + +#ifndef thr0loc_h +#define thr0loc_h + +#include "univ.i" +#include "os0thread.h" + +/******************************************************************** +Initializes the thread local storage module. */ +UNIV_INTERN +void +thr_local_init(void); +/*================*/ +/*********************************************************************** +Creates a local storage struct for the calling new thread. */ +UNIV_INTERN +void +thr_local_create(void); +/*==================*/ +/*********************************************************************** +Frees the local storage struct for the specified thread. */ +UNIV_INTERN +void +thr_local_free( +/*===========*/ + os_thread_id_t id); /* in: thread id */ +/*********************************************************************** +Gets the slot number in the thread table of a thread. */ +UNIV_INTERN +ulint +thr_local_get_slot_no( +/*==================*/ + /* out: slot number */ + os_thread_id_t id); /* in: thread id of the thread */ +/*********************************************************************** +Sets in the local storage the slot number in the thread table of a thread. */ +UNIV_INTERN +void +thr_local_set_slot_no( +/*==================*/ + os_thread_id_t id, /* in: thread id of the thread */ + ulint slot_no);/* in: slot number */ +/*********************************************************************** +Returns pointer to the 'in_ibuf' field within the current thread local +storage. */ +UNIV_INTERN +ibool* +thr_local_get_in_ibuf_field(void); +/*=============================*/ + /* out: pointer to the in_ibuf field */ + +/************************************************************************* +Return local hash table informations. */ + +ulint +thr_local_hash_cells(void); +/*=======================*/ + +ulint +thr_local_hash_nodes(void); +/*=======================*/ + +#ifndef UNIV_NONINL +#include "thr0loc.ic" +#endif + +#endif === added file 'storage/xtradb/include/thr0loc.ic' --- a/storage/xtradb/include/thr0loc.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/thr0loc.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,23 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Thread local storage + +Created 10/4/1995 Heikki Tuuri +*******************************************************/ === added file 'storage/xtradb/include/trx0i_s.h' --- a/storage/xtradb/include/trx0i_s.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/trx0i_s.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,212 @@ +/***************************************************************************** + +Copyright (c) 2007, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +INFORMATION SCHEMA innodb_trx, innodb_locks and +innodb_lock_waits tables cache structures and public +functions. + +Created July 17, 2007 Vasil Dimov +*******************************************************/ + +#ifndef trx0i_s_h +#define trx0i_s_h + +#include "univ.i" +#include "trx0types.h" +#include "ut0ut.h" + +/* the maximum amount of memory that can be consumed by innodb_trx, +innodb_locks and innodb_lock_waits information schema tables. */ +#define TRX_I_S_MEM_LIMIT 16777216 /* 16 MiB */ + +/* the maximum length of a string that can be stored in +i_s_locks_row_t::lock_data */ +#define TRX_I_S_LOCK_DATA_MAX_LEN 8192 + +/* the maximum length of a string that can be stored in +i_s_trx_row_t::trx_query */ +#define TRX_I_S_TRX_QUERY_MAX_LEN 1024 + +typedef struct i_s_locks_row_struct i_s_locks_row_t; +typedef struct i_s_hash_chain_struct i_s_hash_chain_t; + +/* Objects of this type are added to the hash table +trx_i_s_cache_t::locks_hash */ +struct i_s_hash_chain_struct { + i_s_locks_row_t* value; + i_s_hash_chain_t* next; +}; + +/* This structure represents INFORMATION_SCHEMA.innodb_locks row */ +struct i_s_locks_row_struct { + ullint lock_trx_id; + const char* lock_mode; + const char* lock_type; + const char* lock_table; + const char* lock_index; + ulint lock_space; + ulint lock_page; + ulint lock_rec; + const char* lock_data; + + /* The following are auxiliary and not included in the table */ + ullint lock_table_id; + i_s_hash_chain_t hash_chain; /* this object is added to the hash + table + trx_i_s_cache_t::locks_hash */ +}; + +/* This structure represents INFORMATION_SCHEMA.innodb_trx row */ +typedef struct i_s_trx_row_struct { + ullint trx_id; + const char* trx_state; + ib_time_t trx_started; + const i_s_locks_row_t* requested_lock_row; + ib_time_t trx_wait_started; + ullint trx_weight; + ulint trx_mysql_thread_id; + const char* trx_query; +} i_s_trx_row_t; + +/* This structure represents INFORMATION_SCHEMA.innodb_lock_waits row */ +typedef struct i_s_lock_waits_row_struct { + const i_s_locks_row_t* requested_lock_row; + const i_s_locks_row_t* blocking_lock_row; +} i_s_lock_waits_row_t; + +/* This type is opaque and is defined in trx/trx0i_s.c */ +typedef struct trx_i_s_cache_struct trx_i_s_cache_t; + +/* Auxiliary enum used by functions that need to select one of the +INFORMATION_SCHEMA tables */ +enum i_s_table { + I_S_INNODB_TRX, + I_S_INNODB_LOCKS, + I_S_INNODB_LOCK_WAITS +}; + +/* This is the intermediate buffer where data needed to fill the +INFORMATION SCHEMA tables is fetched and later retrieved by the C++ +code in handler/i_s.cc. */ +extern trx_i_s_cache_t* trx_i_s_cache; + +/*********************************************************************** +Initialize INFORMATION SCHEMA trx related cache. */ +UNIV_INTERN +void +trx_i_s_cache_init( +/*===============*/ + trx_i_s_cache_t* cache); /* out: cache to init */ + +/*********************************************************************** +Issue a shared/read lock on the tables cache. */ +UNIV_INTERN +void +trx_i_s_cache_start_read( +/*=====================*/ + trx_i_s_cache_t* cache); /* in: cache */ + +/*********************************************************************** +Release a shared/read lock on the tables cache. */ +UNIV_INTERN +void +trx_i_s_cache_end_read( +/*===================*/ + trx_i_s_cache_t* cache); /* in: cache */ + +/*********************************************************************** +Issue an exclusive/write lock on the tables cache. */ +UNIV_INTERN +void +trx_i_s_cache_start_write( +/*======================*/ + trx_i_s_cache_t* cache); /* in: cache */ + +/*********************************************************************** +Release an exclusive/write lock on the tables cache. */ +UNIV_INTERN +void +trx_i_s_cache_end_write( +/*====================*/ + trx_i_s_cache_t* cache); /* in: cache */ + + +/*********************************************************************** +Retrieves the number of used rows in the cache for a given +INFORMATION SCHEMA table. */ +UNIV_INTERN +ulint +trx_i_s_cache_get_rows_used( +/*========================*/ + /* out: number of rows */ + trx_i_s_cache_t* cache, /* in: cache */ + enum i_s_table table); /* in: which table */ + +/*********************************************************************** +Retrieves the nth row in the cache for a given INFORMATION SCHEMA +table. */ +UNIV_INTERN +void* +trx_i_s_cache_get_nth_row( +/*======================*/ + /* out: row */ + trx_i_s_cache_t* cache, /* in: cache */ + enum i_s_table table, /* in: which table */ + ulint n); /* in: row number */ + +/*********************************************************************** +Update the transactions cache if it has not been read for some time. */ +UNIV_INTERN +int +trx_i_s_possibly_fetch_data_into_cache( +/*===================================*/ + /* out: 0 - fetched, 1 - not */ + trx_i_s_cache_t* cache); /* in/out: cache */ + +/*********************************************************************** +Returns TRUE if the data in the cache is truncated due to the memory +limit posed by TRX_I_S_MEM_LIMIT. */ +UNIV_INTERN +ibool +trx_i_s_cache_is_truncated( +/*=======================*/ + /* out: TRUE if truncated */ + trx_i_s_cache_t* cache); /* in: cache */ + +/* The maximum length of a resulting lock_id_size in +trx_i_s_create_lock_id(), not including the terminating '\0'. +":%lu:%lu:%lu" -> 63 chars */ +#define TRX_I_S_LOCK_ID_MAX_LEN (TRX_ID_MAX_LEN + 63) + +/*********************************************************************** +Crafts a lock id string from a i_s_locks_row_t object. Returns its +second argument. This function aborts if there is not enough space in +lock_id. Be sure to provide at least TRX_I_S_LOCK_ID_MAX_LEN + 1 if you +want to be 100% sure that it will not abort. */ +UNIV_INTERN +char* +trx_i_s_create_lock_id( +/*===================*/ + /* out: resulting lock id */ + const i_s_locks_row_t* row, /* in: innodb_locks row */ + char* lock_id,/* out: resulting lock_id */ + ulint lock_id_size);/* in: size of the lock id + buffer */ + +#endif /* trx0i_s_h */ === added file 'storage/xtradb/include/trx0purge.h' --- a/storage/xtradb/include/trx0purge.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/trx0purge.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,185 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Purge old versions + +Created 3/26/1996 Heikki Tuuri +*******************************************************/ + +#ifndef trx0purge_h +#define trx0purge_h + +#include "univ.i" +#include "trx0types.h" +#include "mtr0mtr.h" +#include "trx0sys.h" +#include "que0types.h" +#include "page0page.h" +#include "usr0sess.h" +#include "fil0fil.h" + +/* The global data structure coordinating a purge */ +extern trx_purge_t* purge_sys; + +/* A dummy undo record used as a return value when we have a whole undo log +which needs no purge */ +extern trx_undo_rec_t trx_purge_dummy_rec; + +/************************************************************************ +Calculates the file address of an undo log header when we have the file +address of its history list node. */ +UNIV_INLINE +fil_addr_t +trx_purge_get_log_from_hist( +/*========================*/ + /* out: file address of the log */ + fil_addr_t node_addr); /* in: file address of the history + list node of the log */ +/********************************************************************* +Checks if trx_id is >= purge_view: then it is guaranteed that its update +undo log still exists in the system. */ +UNIV_INTERN +ibool +trx_purge_update_undo_must_exist( +/*=============================*/ + /* out: TRUE if is sure that it is preserved, also + if the function returns FALSE, it is possible that + the undo log still exists in the system */ + dulint trx_id);/* in: transaction id */ +/************************************************************************ +Creates the global purge system control structure and inits the history +mutex. */ +UNIV_INTERN +void +trx_purge_sys_create(void); +/*======================*/ +/************************************************************************ +Adds the update undo log as the first log in the history list. Removes the +update undo log segment from the rseg slot if it is too big for reuse. */ +UNIV_INTERN +void +trx_purge_add_update_undo_to_history( +/*=================================*/ + trx_t* trx, /* in: transaction */ + page_t* undo_page, /* in: update undo log header page, + x-latched */ + mtr_t* mtr); /* in: mtr */ +/************************************************************************ +Fetches the next undo log record from the history list to purge. It must be +released with the corresponding release function. */ +UNIV_INTERN +trx_undo_rec_t* +trx_purge_fetch_next_rec( +/*=====================*/ + /* out: copy of an undo log record, or + pointer to the dummy undo log record + &trx_purge_dummy_rec if the whole undo log + can skipped in purge; NULL if none left */ + dulint* roll_ptr,/* out: roll pointer to undo record */ + trx_undo_inf_t** cell, /* out: storage cell for the record in the + purge array */ + mem_heap_t* heap); /* in: memory heap where copied */ +/*********************************************************************** +Releases a reserved purge undo record. */ +UNIV_INTERN +void +trx_purge_rec_release( +/*==================*/ + trx_undo_inf_t* cell); /* in: storage cell */ +/*********************************************************************** +This function runs a purge batch. */ +UNIV_INTERN +ulint +trx_purge(void); +/*===========*/ + /* out: number of undo log pages handled in + the batch */ +/********************************************************************** +Prints information of the purge system to stderr. */ +UNIV_INTERN +void +trx_purge_sys_print(void); +/*======================*/ + +/* The control structure used in the purge operation */ +struct trx_purge_struct{ + ulint state; /* Purge system state */ + sess_t* sess; /* System session running the purge + query */ + trx_t* trx; /* System transaction running the purge + query: this trx is not in the trx list + of the trx system and it never ends */ + que_t* query; /* The query graph which will do the + parallelized purge operation */ + rw_lock_t latch; /* The latch protecting the purge view. + A purge operation must acquire an + x-latch here for the instant at which + it changes the purge view: an undo + log operation can prevent this by + obtaining an s-latch here. */ + read_view_t* view; /* The purge will not remove undo logs + which are >= this view (purge view) */ + mutex_t mutex; /* Mutex protecting the fields below */ + ulint n_pages_handled;/* Approximate number of undo log + pages processed in purge */ + ulint handle_limit; /* Target of how many pages to get + processed in the current purge */ + /*------------------------------*/ + /* The following two fields form the 'purge pointer' which advances + during a purge, and which is used in history list truncation */ + + dulint purge_trx_no; /* Purge has advanced past all + transactions whose number is less + than this */ + dulint purge_undo_no; /* Purge has advanced past all records + whose undo number is less than this */ + /*-----------------------------*/ + ibool next_stored; /* TRUE if the info of the next record + to purge is stored below: if yes, then + the transaction number and the undo + number of the record are stored in + purge_trx_no and purge_undo_no above */ + trx_rseg_t* rseg; /* Rollback segment for the next undo + record to purge */ + ulint page_no; /* Page number for the next undo + record to purge, page number of the + log header, if dummy record */ + ulint offset; /* Page offset for the next undo + record to purge, 0 if the dummy + record */ + ulint hdr_page_no; /* Header page of the undo log where + the next record to purge belongs */ + ulint hdr_offset; /* Header byte offset on the page */ + /*-----------------------------*/ + trx_undo_arr_t* arr; /* Array of transaction numbers and + undo numbers of the undo records + currently under processing in purge */ + mem_heap_t* heap; /* Temporary storage used during a + purge: can be emptied after purge + completes */ +}; + +#define TRX_PURGE_ON 1 /* purge operation is running */ +#define TRX_STOP_PURGE 2 /* purge operation is stopped, or + it should be stopped */ +#ifndef UNIV_NONINL +#include "trx0purge.ic" +#endif + +#endif === added file 'storage/xtradb/include/trx0purge.ic' --- a/storage/xtradb/include/trx0purge.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/trx0purge.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,42 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Purge old versions + +Created 3/26/1996 Heikki Tuuri +*******************************************************/ + +#include "trx0undo.h" + +/************************************************************************ +Calculates the file address of an undo log header when we have the file +address of its history list node. */ +UNIV_INLINE +fil_addr_t +trx_purge_get_log_from_hist( +/*========================*/ + /* out: file address of the log */ + fil_addr_t node_addr) /* in: file address of the history + list node of the log */ +{ + node_addr.boffset -= TRX_UNDO_HISTORY_NODE; + + return(node_addr); +} + === added file 'storage/xtradb/include/trx0rec.h' --- a/storage/xtradb/include/trx0rec.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/trx0rec.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,333 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Transaction undo log record + +Created 3/26/1996 Heikki Tuuri +*******************************************************/ + +#ifndef trx0rec_h +#define trx0rec_h + +#include "univ.i" +#include "trx0types.h" +#include "row0types.h" +#include "mtr0mtr.h" +#include "dict0types.h" +#include "que0types.h" +#include "data0data.h" +#include "rem0types.h" + +/*************************************************************************** +Copies the undo record to the heap. */ +UNIV_INLINE +trx_undo_rec_t* +trx_undo_rec_copy( +/*==============*/ + /* out, own: copy of undo log record */ + trx_undo_rec_t* undo_rec, /* in: undo log record */ + mem_heap_t* heap); /* in: heap where copied */ +/************************************************************************** +Reads the undo log record type. */ +UNIV_INLINE +ulint +trx_undo_rec_get_type( +/*==================*/ + /* out: record type */ + trx_undo_rec_t* undo_rec); /* in: undo log record */ +/************************************************************************** +Reads from an undo log record the record compiler info. */ +UNIV_INLINE +ulint +trx_undo_rec_get_cmpl_info( +/*=======================*/ + /* out: compiler info */ + trx_undo_rec_t* undo_rec); /* in: undo log record */ +/************************************************************************** +Returns TRUE if an undo log record contains an extern storage field. */ +UNIV_INLINE +ibool +trx_undo_rec_get_extern_storage( +/*============================*/ + /* out: TRUE if extern */ + trx_undo_rec_t* undo_rec); /* in: undo log record */ +/************************************************************************** +Reads the undo log record number. */ +UNIV_INLINE +dulint +trx_undo_rec_get_undo_no( +/*=====================*/ + /* out: undo no */ + trx_undo_rec_t* undo_rec); /* in: undo log record */ +/************************************************************************** + * Returns the start of the undo record data area. */ + +UNIV_INLINE +byte* +trx_undo_rec_get_ptr( +/*==================*/ + /* out: compiler info */ + trx_undo_rec_t* undo_rec, /* in: undo log record */ + dulint undo_no); /* in: undo no read from node */ + +/************************************************************************** +Reads from an undo log record the general parameters. */ +UNIV_INTERN +byte* +trx_undo_rec_get_pars( +/*==================*/ + /* out: remaining part of undo log + record after reading these values */ + trx_undo_rec_t* undo_rec, /* in: undo log record */ + ulint* type, /* out: undo record type: + TRX_UNDO_INSERT_REC, ... */ + ulint* cmpl_info, /* out: compiler info, relevant only + for update type records */ + ibool* updated_extern, /* out: TRUE if we updated an + externally stored fild */ + dulint* undo_no, /* out: undo log record number */ + dulint* table_id); /* out: table id */ +/*********************************************************************** +Builds a row reference from an undo log record. */ +UNIV_INTERN +byte* +trx_undo_rec_get_row_ref( +/*=====================*/ + /* out: pointer to remaining part of undo + record */ + byte* ptr, /* in: remaining part of a copy of an undo log + record, at the start of the row reference; + NOTE that this copy of the undo log record must + be preserved as long as the row reference is + used, as we do NOT copy the data in the + record! */ + dict_index_t* index, /* in: clustered index */ + dtuple_t** ref, /* out, own: row reference */ + mem_heap_t* heap); /* in: memory heap from which the memory + needed is allocated */ +/*********************************************************************** +Skips a row reference from an undo log record. */ +UNIV_INTERN +byte* +trx_undo_rec_skip_row_ref( +/*======================*/ + /* out: pointer to remaining part of undo + record */ + byte* ptr, /* in: remaining part in update undo log + record, at the start of the row reference */ + dict_index_t* index); /* in: clustered index */ +/************************************************************************** +Reads from an undo log update record the system field values of the old +version. */ +UNIV_INTERN +byte* +trx_undo_update_rec_get_sys_cols( +/*=============================*/ + /* out: remaining part of undo log + record after reading these values */ + byte* ptr, /* in: remaining part of undo log + record after reading general + parameters */ + dulint* trx_id, /* out: trx id */ + dulint* roll_ptr, /* out: roll ptr */ + ulint* info_bits); /* out: info bits state */ +/*********************************************************************** +Builds an update vector based on a remaining part of an undo log record. */ +UNIV_INTERN +byte* +trx_undo_update_rec_get_update( +/*===========================*/ + /* out: remaining part of the record, + NULL if an error detected, which means that + the record is corrupted */ + byte* ptr, /* in: remaining part in update undo log + record, after reading the row reference + NOTE that this copy of the undo log record must + be preserved as long as the update vector is + used, as we do NOT copy the data in the + record! */ + dict_index_t* index, /* in: clustered index */ + ulint type, /* in: TRX_UNDO_UPD_EXIST_REC, + TRX_UNDO_UPD_DEL_REC, or + TRX_UNDO_DEL_MARK_REC; in the last case, + only trx id and roll ptr fields are added to + the update vector */ + dulint trx_id, /* in: transaction id from this undorecord */ + dulint roll_ptr,/* in: roll pointer from this undo record */ + ulint info_bits,/* in: info bits from this undo record */ + trx_t* trx, /* in: transaction */ + mem_heap_t* heap, /* in: memory heap from which the memory + needed is allocated */ + upd_t** upd); /* out, own: update vector */ +/*********************************************************************** +Builds a partial row from an update undo log record. It contains the +columns which occur as ordering in any index of the table. */ +UNIV_INTERN +byte* +trx_undo_rec_get_partial_row( +/*=========================*/ + /* out: pointer to remaining part of undo + record */ + byte* ptr, /* in: remaining part in update undo log + record of a suitable type, at the start of + the stored index columns; + NOTE that this copy of the undo log record must + be preserved as long as the partial row is + used, as we do NOT copy the data in the + record! */ + dict_index_t* index, /* in: clustered index */ + dtuple_t** row, /* out, own: partial row */ + ibool ignore_prefix, /* in: flag to indicate if we + expect blob prefixes in undo. Used + only in the assertion. */ + mem_heap_t* heap); /* in: memory heap from which the memory + needed is allocated */ +/*************************************************************************** +Writes information to an undo log about an insert, update, or a delete marking +of a clustered index record. This information is used in a rollback of the +transaction and in consistent reads that must look to the history of this +transaction. */ +UNIV_INTERN +ulint +trx_undo_report_row_operation( +/*==========================*/ + /* out: DB_SUCCESS or error code */ + ulint flags, /* in: if BTR_NO_UNDO_LOG_FLAG bit is + set, does nothing */ + ulint op_type, /* in: TRX_UNDO_INSERT_OP or + TRX_UNDO_MODIFY_OP */ + que_thr_t* thr, /* in: query thread */ + dict_index_t* index, /* in: clustered index */ + const dtuple_t* clust_entry, /* in: in the case of an insert, + index entry to insert into the + clustered index, otherwise NULL */ + const upd_t* update, /* in: in the case of an update, + the update vector, otherwise NULL */ + ulint cmpl_info, /* in: compiler info on secondary + index updates */ + const rec_t* rec, /* in: case of an update or delete + marking, the record in the clustered + index, otherwise NULL */ + dulint* roll_ptr); /* out: rollback pointer to the + inserted undo log record, + ut_dulint_zero if BTR_NO_UNDO_LOG + flag was specified */ +/********************************************************************** +Copies an undo record to heap. This function can be called if we know that +the undo log record exists. */ +UNIV_INTERN +trx_undo_rec_t* +trx_undo_get_undo_rec_low( +/*======================*/ + /* out, own: copy of the record */ + dulint roll_ptr, /* in: roll pointer to record */ + mem_heap_t* heap); /* in: memory heap where copied */ +/********************************************************************** +Copies an undo record to heap. */ +UNIV_INTERN +ulint +trx_undo_get_undo_rec( +/*==================*/ + /* out: DB_SUCCESS, or + DB_MISSING_HISTORY if the undo log + has been truncated and we cannot + fetch the old version; NOTE: the + caller must have latches on the + clustered index page and purge_view */ + dulint roll_ptr, /* in: roll pointer to record */ + dulint trx_id, /* in: id of the trx that generated + the roll pointer: it points to an + undo log of this transaction */ + trx_undo_rec_t** undo_rec, /* out, own: copy of the record */ + mem_heap_t* heap); /* in: memory heap where copied */ +/*********************************************************************** +Build a previous version of a clustered index record. This function checks +that the caller has a latch on the index page of the clustered index record +and an s-latch on the purge_view. This guarantees that the stack of versions +is locked. */ +UNIV_INTERN +ulint +trx_undo_prev_version_build( +/*========================*/ + /* out: DB_SUCCESS, or DB_MISSING_HISTORY if + the previous version is not >= purge_view, + which means that it may have been removed, + DB_ERROR if corrupted record */ + const rec_t* index_rec,/* in: clustered index record in the + index tree */ + mtr_t* index_mtr,/* in: mtr which contains the latch to + index_rec page and purge_view */ + const rec_t* rec, /* in: version of a clustered index record */ + dict_index_t* index, /* in: clustered index */ + ulint* offsets,/* in: rec_get_offsets(rec, index) */ + mem_heap_t* heap, /* in: memory heap from which the memory + needed is allocated */ + rec_t** old_vers);/* out, own: previous version, or NULL if + rec is the first inserted version, or if + history data has been deleted */ +/*************************************************************** +Parses a redo log record of adding an undo log record. */ +UNIV_INTERN +byte* +trx_undo_parse_add_undo_rec( +/*========================*/ + /* out: end of log record or NULL */ + byte* ptr, /* in: buffer */ + byte* end_ptr,/* in: buffer end */ + page_t* page); /* in: page or NULL */ +/*************************************************************** +Parses a redo log record of erasing of an undo page end. */ +UNIV_INTERN +byte* +trx_undo_parse_erase_page_end( +/*==========================*/ + /* out: end of log record or NULL */ + byte* ptr, /* in: buffer */ + byte* end_ptr,/* in: buffer end */ + page_t* page, /* in: page or NULL */ + mtr_t* mtr); /* in: mtr or NULL */ + +/* Types of an undo log record: these have to be smaller than 16, as the +compilation info multiplied by 16 is ORed to this value in an undo log +record */ + +#define TRX_UNDO_INSERT_REC 11 /* fresh insert into clustered index */ +#define TRX_UNDO_UPD_EXIST_REC 12 /* update of a non-delete-marked + record */ +#define TRX_UNDO_UPD_DEL_REC 13 /* update of a delete marked record to + a not delete marked record; also the + fields of the record can change */ +#define TRX_UNDO_DEL_MARK_REC 14 /* delete marking of a record; fields + do not change */ +#define TRX_UNDO_CMPL_INFO_MULT 16 /* compilation info is multiplied by + this and ORed to the type above */ +#define TRX_UNDO_UPD_EXTERN 128 /* This bit can be ORed to type_cmpl + to denote that we updated external + storage fields: used by purge to + free the external storage */ + +/* Operation type flags used in trx_undo_report_row_operation */ +#define TRX_UNDO_INSERT_OP 1 +#define TRX_UNDO_MODIFY_OP 2 + +#ifndef UNIV_NONINL +#include "trx0rec.ic" +#endif + +#endif === added file 'storage/xtradb/include/trx0rec.ic' --- a/storage/xtradb/include/trx0rec.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/trx0rec.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,116 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Transaction undo log record + +Created 3/26/1996 Heikki Tuuri +*******************************************************/ + +/************************************************************************** +Reads from an undo log record the record type. */ +UNIV_INLINE +ulint +trx_undo_rec_get_type( +/*==================*/ + /* out: record type */ + trx_undo_rec_t* undo_rec) /* in: undo log record */ +{ + return(mach_read_from_1(undo_rec + 2) & (TRX_UNDO_CMPL_INFO_MULT - 1)); +} + +/************************************************************************** +Reads from an undo log record the record compiler info. */ +UNIV_INLINE +ulint +trx_undo_rec_get_cmpl_info( +/*=======================*/ + /* out: compiler info */ + trx_undo_rec_t* undo_rec) /* in: undo log record */ +{ + return(mach_read_from_1(undo_rec + 2) / TRX_UNDO_CMPL_INFO_MULT); +} + +/************************************************************************** +Returns TRUE if an undo log record contains an extern storage field. */ +UNIV_INLINE +ibool +trx_undo_rec_get_extern_storage( +/*============================*/ + /* out: TRUE if extern */ + trx_undo_rec_t* undo_rec) /* in: undo log record */ +{ + if (mach_read_from_1(undo_rec + 2) & TRX_UNDO_UPD_EXTERN) { + + return(TRUE); + } + + return(FALSE); +} + +/************************************************************************** +Reads the undo log record number. */ +UNIV_INLINE +dulint +trx_undo_rec_get_undo_no( +/*=====================*/ + /* out: undo no */ + trx_undo_rec_t* undo_rec) /* in: undo log record */ +{ + byte* ptr; + + ptr = undo_rec + 3; + + return(mach_dulint_read_much_compressed(ptr)); +} + +/************************************************************************** +Returns the start of the undo record data area. */ +UNIV_INLINE +byte* +trx_undo_rec_get_ptr( +/*=================*/ + /* out: compiler info */ + trx_undo_rec_t* undo_rec, /* in: undo log record */ + dulint undo_no) /* in: undo no read from node */ +{ + return (((byte*) undo_rec) + 3 + + mach_dulint_get_much_compressed_size(undo_no)); +} + +/*************************************************************************** +Copies the undo record to the heap. */ +UNIV_INLINE +trx_undo_rec_t* +trx_undo_rec_copy( +/*==============*/ + /* out, own: copy of undo log record */ + trx_undo_rec_t* undo_rec, /* in: undo log record */ + mem_heap_t* heap) /* in: heap where copied */ +{ + ulint len; + trx_undo_rec_t* rec_copy; + + len = mach_read_from_2(undo_rec) + - ut_align_offset(undo_rec, UNIV_PAGE_SIZE); + rec_copy = mem_heap_alloc(heap, len); + + ut_memcpy(rec_copy, undo_rec, len); + + return(rec_copy); +} === added file 'storage/xtradb/include/trx0roll.h' --- a/storage/xtradb/include/trx0roll.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/trx0roll.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,340 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Transaction rollback + +Created 3/26/1996 Heikki Tuuri +*******************************************************/ + +#ifndef trx0roll_h +#define trx0roll_h + +#include "univ.i" +#include "trx0trx.h" +#include "trx0types.h" +#include "mtr0mtr.h" +#include "trx0sys.h" + +#define trx_roll_free_all_savepoints(s) trx_roll_savepoints_free((s), NULL) + +/*********************************************************************** +Determines if this transaction is rolling back an incomplete transaction +in crash recovery. */ +UNIV_INTERN +ibool +trx_is_recv( +/*========*/ + /* out: TRUE if trx is an incomplete + transaction that is being rolled back + in crash recovery */ + const trx_t* trx); /* in: transaction */ +/*********************************************************************** +Returns a transaction savepoint taken at this point in time. */ +UNIV_INTERN +trx_savept_t +trx_savept_take( +/*============*/ + /* out: savepoint */ + trx_t* trx); /* in: transaction */ +/*********************************************************************** +Creates an undo number array. */ +UNIV_INTERN +trx_undo_arr_t* +trx_undo_arr_create(void); +/*=====================*/ +/*********************************************************************** +Frees an undo number array. */ +UNIV_INTERN +void +trx_undo_arr_free( +/*==============*/ + trx_undo_arr_t* arr); /* in: undo number array */ +/*********************************************************************** +Returns pointer to nth element in an undo number array. */ +UNIV_INLINE +trx_undo_inf_t* +trx_undo_arr_get_nth_info( +/*======================*/ + /* out: pointer to the nth element */ + trx_undo_arr_t* arr, /* in: undo number array */ + ulint n); /* in: position */ +/*************************************************************************** +Tries truncate the undo logs. */ +UNIV_INTERN +void +trx_roll_try_truncate( +/*==================*/ + trx_t* trx); /* in: transaction */ +/************************************************************************ +Pops the topmost record when the two undo logs of a transaction are seen +as a single stack of records ordered by their undo numbers. Inserts the +undo number of the popped undo record to the array of currently processed +undo numbers in the transaction. When the query thread finishes processing +of this undo record, it must be released with trx_undo_rec_release. */ +UNIV_INTERN +trx_undo_rec_t* +trx_roll_pop_top_rec_of_trx( +/*========================*/ + /* out: undo log record copied to heap, NULL + if none left, or if the undo number of the + top record would be less than the limit */ + trx_t* trx, /* in: transaction */ + dulint limit, /* in: least undo number we need */ + dulint* roll_ptr,/* out: roll pointer to undo record */ + mem_heap_t* heap); /* in: memory heap where copied */ +/************************************************************************ +Reserves an undo log record for a query thread to undo. This should be +called if the query thread gets the undo log record not using the pop +function above. */ +UNIV_INTERN +ibool +trx_undo_rec_reserve( +/*=================*/ + /* out: TRUE if succeeded */ + trx_t* trx, /* in: transaction */ + dulint undo_no);/* in: undo number of the record */ +/*********************************************************************** +Releases a reserved undo record. */ +UNIV_INTERN +void +trx_undo_rec_release( +/*=================*/ + trx_t* trx, /* in: transaction */ + dulint undo_no);/* in: undo number */ +/************************************************************************* +Starts a rollback operation. */ +UNIV_INTERN +void +trx_rollback( +/*=========*/ + trx_t* trx, /* in: transaction */ + trx_sig_t* sig, /* in: signal starting the rollback */ + que_thr_t** next_thr);/* in/out: next query thread to run; + if the value which is passed in is + a pointer to a NULL pointer, then the + calling function can start running + a new query thread */ +/*********************************************************************** +Rollback or clean up any incomplete transactions which were +encountered in crash recovery. If the transaction already was +committed, then we clean up a possible insert undo log. If the +transaction was not yet committed, then we roll it back. +Note: this is done in a background thread. */ +UNIV_INTERN +os_thread_ret_t +trx_rollback_or_clean_all_recovered( +/*================================*/ + /* out: a dummy parameter */ + void* arg __attribute__((unused))); + /* in: a dummy parameter required by + os_thread_create */ +/******************************************************************** +Finishes a transaction rollback. */ +UNIV_INTERN +void +trx_finish_rollback_off_kernel( +/*===========================*/ + que_t* graph, /* in: undo graph which can now be freed */ + trx_t* trx, /* in: transaction */ + que_thr_t** next_thr);/* in/out: next query thread to run; + if the value which is passed in is + a pointer to a NULL pointer, then the + calling function can start running + a new query thread; if this parameter is + NULL, it is ignored */ +/******************************************************************** +Builds an undo 'query' graph for a transaction. The actual rollback is +performed by executing this query graph like a query subprocedure call. +The reply about the completion of the rollback will be sent by this +graph. */ +UNIV_INTERN +que_t* +trx_roll_graph_build( +/*=================*/ + /* out, own: the query graph */ + trx_t* trx); /* in: trx handle */ +/************************************************************************* +Creates a rollback command node struct. */ +UNIV_INTERN +roll_node_t* +roll_node_create( +/*=============*/ + /* out, own: rollback node struct */ + mem_heap_t* heap); /* in: mem heap where created */ +/*************************************************************** +Performs an execution step for a rollback command node in a query graph. */ +UNIV_INTERN +que_thr_t* +trx_rollback_step( +/*==============*/ + /* out: query thread to run next, or NULL */ + que_thr_t* thr); /* in: query thread */ +/*********************************************************************** +Rollback a transaction used in MySQL. */ +UNIV_INTERN +int +trx_rollback_for_mysql( +/*===================*/ + /* out: error code or DB_SUCCESS */ + trx_t* trx); /* in: transaction handle */ +/*********************************************************************** +Rollback the latest SQL statement for MySQL. */ +UNIV_INTERN +int +trx_rollback_last_sql_stat_for_mysql( +/*=================================*/ + /* out: error code or DB_SUCCESS */ + trx_t* trx); /* in: transaction handle */ +/*********************************************************************** +Rollback a transaction used in MySQL. */ +UNIV_INTERN +int +trx_general_rollback_for_mysql( +/*===========================*/ + /* out: error code or DB_SUCCESS */ + trx_t* trx, /* in: transaction handle */ + ibool partial,/* in: TRUE if partial rollback requested */ + trx_savept_t* savept);/* in: pointer to savepoint undo number, if + partial rollback requested */ +/*********************************************************************** +Rolls back a transaction back to a named savepoint. Modifications after the +savepoint are undone but InnoDB does NOT release the corresponding locks +which are stored in memory. If a lock is 'implicit', that is, a new inserted +row holds a lock where the lock information is carried by the trx id stored in +the row, these locks are naturally released in the rollback. Savepoints which +were set after this savepoint are deleted. */ +UNIV_INTERN +ulint +trx_rollback_to_savepoint_for_mysql( +/*================================*/ + /* out: if no savepoint + of the name found then + DB_NO_SAVEPOINT, + otherwise DB_SUCCESS */ + trx_t* trx, /* in: transaction handle */ + const char* savepoint_name, /* in: savepoint name */ + ib_int64_t* mysql_binlog_cache_pos);/* out: the MySQL binlog cache + position corresponding to this + savepoint; MySQL needs this + information to remove the + binlog entries of the queries + executed after the savepoint */ +/*********************************************************************** +Creates a named savepoint. If the transaction is not yet started, starts it. +If there is already a savepoint of the same name, this call erases that old +savepoint and replaces it with a new. Savepoints are deleted in a transaction +commit or rollback. */ +UNIV_INTERN +ulint +trx_savepoint_for_mysql( +/*====================*/ + /* out: always DB_SUCCESS */ + trx_t* trx, /* in: transaction handle */ + const char* savepoint_name, /* in: savepoint name */ + ib_int64_t binlog_cache_pos); /* in: MySQL binlog cache + position corresponding to this + connection at the time of the + savepoint */ + +/*********************************************************************** +Releases a named savepoint. Savepoints which +were set after this savepoint are deleted. */ +UNIV_INTERN +ulint +trx_release_savepoint_for_mysql( +/*============================*/ + /* out: if no savepoint + of the name found then + DB_NO_SAVEPOINT, + otherwise DB_SUCCESS */ + trx_t* trx, /* in: transaction handle */ + const char* savepoint_name); /* in: savepoint name */ + +/*********************************************************************** +Frees a single savepoint struct. */ +UNIV_INTERN +void +trx_roll_savepoint_free( +/*=====================*/ + trx_t* trx, /* in: transaction handle */ + trx_named_savept_t* savep); /* in: savepoint to free */ + +/*********************************************************************** +Frees savepoint structs starting from savep, if savep == NULL then +free all savepoints. */ + +void +trx_roll_savepoints_free( +/*=====================*/ + trx_t* trx, /* in: transaction handle */ + trx_named_savept_t* savep); /* in: free all savepoints > this one; + if this is NULL, free all savepoints + of trx */ + +/* A cell in the array used during a rollback and a purge */ +struct trx_undo_inf_struct{ + dulint trx_no; /* transaction number: not defined during + a rollback */ + dulint undo_no; /* undo number of an undo record */ + ibool in_use; /* TRUE if the cell is in use */ +}; + +/* During a rollback and a purge, undo numbers of undo records currently being +processed are stored in this array */ + +struct trx_undo_arr_struct{ + ulint n_cells; /* number of cells in the array */ + ulint n_used; /* number of cells currently in use */ + trx_undo_inf_t* infos; /* the array of undo infos */ + mem_heap_t* heap; /* memory heap from which allocated */ +}; + +/* Rollback command node in a query graph */ +struct roll_node_struct{ + que_common_t common; /* node type: QUE_NODE_ROLLBACK */ + ulint state; /* node execution state */ + ibool partial;/* TRUE if we want a partial rollback */ + trx_savept_t savept; /* savepoint to which to roll back, in the + case of a partial rollback */ +}; + +/* A savepoint set with SQL's "SAVEPOINT savepoint_id" command */ +struct trx_named_savept_struct{ + char* name; /* savepoint name */ + trx_savept_t savept; /* the undo number corresponding to + the savepoint */ + ib_int64_t mysql_binlog_cache_pos; + /* the MySQL binlog cache position + corresponding to this savepoint, not + defined if the MySQL binlogging is not + enabled */ + UT_LIST_NODE_T(trx_named_savept_t) + trx_savepoints; /* the list of savepoints of a + transaction */ +}; + +/* Rollback node states */ +#define ROLL_NODE_SEND 1 +#define ROLL_NODE_WAIT 2 + +#ifndef UNIV_NONINL +#include "trx0roll.ic" +#endif + +#endif === added file 'storage/xtradb/include/trx0roll.ic' --- a/storage/xtradb/include/trx0roll.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/trx0roll.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,39 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Transaction rollback + +Created 3/26/1996 Heikki Tuuri +*******************************************************/ + +/*********************************************************************** +Returns pointer to nth element in an undo number array. */ +UNIV_INLINE +trx_undo_inf_t* +trx_undo_arr_get_nth_info( +/*======================*/ + /* out: pointer to the nth element */ + trx_undo_arr_t* arr, /* in: undo number array */ + ulint n) /* in: position */ +{ + ut_ad(arr); + ut_ad(n < arr->n_cells); + + return(arr->infos + n); +} === added file 'storage/xtradb/include/trx0rseg.h' --- a/storage/xtradb/include/trx0rseg.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/trx0rseg.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,220 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Rollback segment + +Created 3/26/1996 Heikki Tuuri +*******************************************************/ + +#ifndef trx0rseg_h +#define trx0rseg_h + +#include "univ.i" +#include "trx0types.h" +#include "trx0sys.h" + +/********************************************************************** +Gets a rollback segment header. */ +UNIV_INLINE +trx_rsegf_t* +trx_rsegf_get( +/*==========*/ + /* out: rollback segment header, page + x-latched */ + ulint space, /* in: space where placed */ + ulint zip_size, /* in: compressed page size in bytes + or 0 for uncompressed pages */ + ulint page_no, /* in: page number of the header */ + mtr_t* mtr); /* in: mtr */ +/********************************************************************** +Gets a newly created rollback segment header. */ +UNIV_INLINE +trx_rsegf_t* +trx_rsegf_get_new( +/*==============*/ + /* out: rollback segment header, page + x-latched */ + ulint space, /* in: space where placed */ + ulint zip_size, /* in: compressed page size in bytes + or 0 for uncompressed pages */ + ulint page_no, /* in: page number of the header */ + mtr_t* mtr); /* in: mtr */ +/******************************************************************* +Gets the file page number of the nth undo log slot. */ +UNIV_INLINE +ulint +trx_rsegf_get_nth_undo( +/*===================*/ + /* out: page number of the undo log segment */ + trx_rsegf_t* rsegf, /* in: rollback segment header */ + ulint n, /* in: index of slot */ + mtr_t* mtr); /* in: mtr */ +/******************************************************************* +Sets the file page number of the nth undo log slot. */ +UNIV_INLINE +void +trx_rsegf_set_nth_undo( +/*===================*/ + trx_rsegf_t* rsegf, /* in: rollback segment header */ + ulint n, /* in: index of slot */ + ulint page_no,/* in: page number of the undo log segment */ + mtr_t* mtr); /* in: mtr */ +/******************************************************************** +Looks for a free slot for an undo log segment. */ +UNIV_INLINE +ulint +trx_rsegf_undo_find_free( +/*=====================*/ + /* out: slot index or ULINT_UNDEFINED if not + found */ + trx_rsegf_t* rsegf, /* in: rollback segment header */ + mtr_t* mtr); /* in: mtr */ +/********************************************************************** +Looks for a rollback segment, based on the rollback segment id. */ +UNIV_INTERN +trx_rseg_t* +trx_rseg_get_on_id( +/*===============*/ + /* out: rollback segment */ + ulint id); /* in: rollback segment id */ +/******************************************************************** +Creates a rollback segment header. This function is called only when +a new rollback segment is created in the database. */ +UNIV_INTERN +ulint +trx_rseg_header_create( +/*===================*/ + /* out: page number of the created segment, + FIL_NULL if fail */ + ulint space, /* in: space id */ + ulint zip_size, /* in: compressed page size in bytes + or 0 for uncompressed pages */ + ulint max_size, /* in: max size in pages */ + ulint* slot_no, /* out: rseg id == slot number in trx sys */ + mtr_t* mtr); /* in: mtr */ +/************************************************************************* +Creates the memory copies for rollback segments and initializes the +rseg list and array in trx_sys at a database startup. */ +UNIV_INTERN +void +trx_rseg_list_and_array_init( +/*=========================*/ + trx_sysf_t* sys_header, /* in: trx system header */ + mtr_t* mtr); /* in: mtr */ +/******************************************************************** +Creates a new rollback segment to the database. */ +UNIV_INTERN +trx_rseg_t* +trx_rseg_create( +/*============*/ + /* out: the created segment object, NULL if + fail */ + ulint space, /* in: space id */ + ulint max_size, /* in: max size in pages */ + ulint* id, /* out: rseg id */ + mtr_t* mtr); /* in: mtr */ + + +/* Real max value may be 4076 in usual. But reserve 4 slot for safety or etc... */ +#define TRX_RSEG_N_EXTRA_SLOTS (((UNIV_PAGE_SIZE - (FIL_PAGE_DATA + FIL_PAGE_DATA_END + TRX_RSEG_UNDO_SLOTS)) / TRX_RSEG_SLOT_SIZE) - 4) + +/* Number of undo log slots in a rollback segment file copy */ +#define TRX_RSEG_N_SLOTS (srv_extra_undoslots ? TRX_RSEG_N_EXTRA_SLOTS : (UNIV_PAGE_SIZE / 16)) + +/* Maximum number of transactions supported by a single rollback segment */ +#define TRX_RSEG_MAX_N_TRXS (TRX_RSEG_N_SLOTS / 2) + +/* The rollback segment memory object */ +struct trx_rseg_struct{ + /*--------------------------------------------------------*/ + ulint id; /* rollback segment id == the index of + its slot in the trx system file copy */ + mutex_t mutex; /* mutex protecting the fields in this + struct except id; NOTE that the latching + order must always be kernel mutex -> + rseg mutex */ + ulint space; /* space where the rollback segment is + header is placed */ + ulint zip_size;/* in: compressed page size of space + in bytes, or 0 for uncompressed spaces */ + ulint page_no;/* page number of the rollback segment + header */ + ulint max_size;/* maximum allowed size in pages */ + ulint curr_size;/* current size in pages */ + /*--------------------------------------------------------*/ + /* Fields for update undo logs */ + UT_LIST_BASE_NODE_T(trx_undo_t) update_undo_list; + /* List of update undo logs */ + UT_LIST_BASE_NODE_T(trx_undo_t) update_undo_cached; + /* List of update undo log segments + cached for fast reuse */ + /*--------------------------------------------------------*/ + /* Fields for insert undo logs */ + UT_LIST_BASE_NODE_T(trx_undo_t) insert_undo_list; + /* List of insert undo logs */ + UT_LIST_BASE_NODE_T(trx_undo_t) insert_undo_cached; + /* List of insert undo log segments + cached for fast reuse */ + /*--------------------------------------------------------*/ + ulint last_page_no; /* Page number of the last not yet + purged log header in the history list; + FIL_NULL if all list purged */ + ulint last_offset; /* Byte offset of the last not yet + purged log header */ + dulint last_trx_no; /* Transaction number of the last not + yet purged log */ + ibool last_del_marks; /* TRUE if the last not yet purged log + needs purging */ + /*--------------------------------------------------------*/ + UT_LIST_NODE_T(trx_rseg_t) rseg_list; + /* the list of the rollback segment + memory objects */ +}; + +/* Undo log segment slot in a rollback segment header */ +/*-------------------------------------------------------------*/ +#define TRX_RSEG_SLOT_PAGE_NO 0 /* Page number of the header page of + an undo log segment */ +/*-------------------------------------------------------------*/ +/* Slot size */ +#define TRX_RSEG_SLOT_SIZE 4 + +/* The offset of the rollback segment header on its page */ +#define TRX_RSEG FSEG_PAGE_DATA + +/* Transaction rollback segment header */ +/*-------------------------------------------------------------*/ +#define TRX_RSEG_MAX_SIZE 0 /* Maximum allowed size for rollback + segment in pages */ +#define TRX_RSEG_HISTORY_SIZE 4 /* Number of file pages occupied + by the logs in the history list */ +#define TRX_RSEG_HISTORY 8 /* The update undo logs for committed + transactions */ +#define TRX_RSEG_FSEG_HEADER (8 + FLST_BASE_NODE_SIZE) + /* Header for the file segment where + this page is placed */ +#define TRX_RSEG_UNDO_SLOTS (8 + FLST_BASE_NODE_SIZE + FSEG_HEADER_SIZE) + /* Undo log segment slots */ +/*-------------------------------------------------------------*/ + +#ifndef UNIV_NONINL +#include "trx0rseg.ic" +#endif + +#endif === added file 'storage/xtradb/include/trx0rseg.ic' --- a/storage/xtradb/include/trx0rseg.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/trx0rseg.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,146 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Rollback segment + +Created 3/26/1996 Heikki Tuuri +*******************************************************/ + +#include "srv0srv.h" + +/********************************************************************** +Gets a rollback segment header. */ +UNIV_INLINE +trx_rsegf_t* +trx_rsegf_get( +/*==========*/ + /* out: rollback segment header, page + x-latched */ + ulint space, /* in: space where placed */ + ulint zip_size, /* in: compressed page size in bytes + or 0 for uncompressed pages */ + ulint page_no, /* in: page number of the header */ + mtr_t* mtr) /* in: mtr */ +{ + buf_block_t* block; + trx_rsegf_t* header; + + block = buf_page_get(space, zip_size, page_no, RW_X_LATCH, mtr); + buf_block_dbg_add_level(block, SYNC_RSEG_HEADER); + + header = TRX_RSEG + buf_block_get_frame(block); + + return(header); +} + +/********************************************************************** +Gets a newly created rollback segment header. */ +UNIV_INLINE +trx_rsegf_t* +trx_rsegf_get_new( +/*==============*/ + /* out: rollback segment header, page + x-latched */ + ulint space, /* in: space where placed */ + ulint zip_size, /* in: compressed page size in bytes + or 0 for uncompressed pages */ + ulint page_no, /* in: page number of the header */ + mtr_t* mtr) /* in: mtr */ +{ + buf_block_t* block; + trx_rsegf_t* header; + + block = buf_page_get(space, zip_size, page_no, RW_X_LATCH, mtr); + buf_block_dbg_add_level(block, SYNC_RSEG_HEADER_NEW); + + header = TRX_RSEG + buf_block_get_frame(block); + + return(header); +} + +/******************************************************************* +Gets the file page number of the nth undo log slot. */ +UNIV_INLINE +ulint +trx_rsegf_get_nth_undo( +/*===================*/ + /* out: page number of the undo log segment */ + trx_rsegf_t* rsegf, /* in: rollback segment header */ + ulint n, /* in: index of slot */ + mtr_t* mtr) /* in: mtr */ +{ + if (UNIV_UNLIKELY(n >= TRX_RSEG_N_SLOTS)) { + fprintf(stderr, + "InnoDB: Error: trying to get slot %lu of rseg\n", + (ulong) n); + ut_error; + } + + return(mtr_read_ulint(rsegf + TRX_RSEG_UNDO_SLOTS + + n * TRX_RSEG_SLOT_SIZE, MLOG_4BYTES, mtr)); +} + +/******************************************************************* +Sets the file page number of the nth undo log slot. */ +UNIV_INLINE +void +trx_rsegf_set_nth_undo( +/*===================*/ + trx_rsegf_t* rsegf, /* in: rollback segment header */ + ulint n, /* in: index of slot */ + ulint page_no,/* in: page number of the undo log segment */ + mtr_t* mtr) /* in: mtr */ +{ + if (UNIV_UNLIKELY(n >= TRX_RSEG_N_SLOTS)) { + fprintf(stderr, + "InnoDB: Error: trying to set slot %lu of rseg\n", + (ulong) n); + ut_error; + } + + mlog_write_ulint(rsegf + TRX_RSEG_UNDO_SLOTS + n * TRX_RSEG_SLOT_SIZE, + page_no, MLOG_4BYTES, mtr); +} + +/******************************************************************** +Looks for a free slot for an undo log segment. */ +UNIV_INLINE +ulint +trx_rsegf_undo_find_free( +/*=====================*/ + /* out: slot index or ULINT_UNDEFINED if not + found */ + trx_rsegf_t* rsegf, /* in: rollback segment header */ + mtr_t* mtr) /* in: mtr */ +{ + ulint i; + ulint page_no; + + for (i = 0; i < TRX_RSEG_N_SLOTS; i++) { + + page_no = trx_rsegf_get_nth_undo(rsegf, i, mtr); + + if (page_no == FIL_NULL) { + + return(i); + } + } + + return(ULINT_UNDEFINED); +} === added file 'storage/xtradb/include/trx0sys.h' --- a/storage/xtradb/include/trx0sys.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/trx0sys.h 2009-04-07 20:51:15 +0000 @@ -0,0 +1,560 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Transaction system + +Created 3/26/1996 Heikki Tuuri +*******************************************************/ + +#ifndef trx0sys_h +#define trx0sys_h + +#include "univ.i" + +#include "trx0types.h" +#include "mtr0mtr.h" +#include "mtr0log.h" +#include "ut0byte.h" +#include "mem0mem.h" +#include "sync0sync.h" +#include "ut0lst.h" +#include "buf0buf.h" +#include "fil0fil.h" +#include "fut0lst.h" +#include "fsp0fsp.h" +#include "read0types.h" +#include "page0types.h" + +/* In a MySQL replication slave, in crash recovery we store the master log +file name and position here. We have successfully got the updates to InnoDB +up to this position. If .._pos is -1, it means no crash recovery was needed, +or there was no master log position info inside InnoDB. */ + +extern char trx_sys_mysql_master_log_name[]; +extern ib_int64_t trx_sys_mysql_master_log_pos; + +extern char trx_sys_mysql_relay_log_name[]; +extern ib_int64_t trx_sys_mysql_relay_log_pos; + +/* If this MySQL server uses binary logging, after InnoDB has been inited +and if it has done a crash recovery, we store the binlog file name and position +here. If .._pos is -1, it means there was no binlog position info inside +InnoDB. */ + +extern char trx_sys_mysql_bin_log_name[]; +extern ib_int64_t trx_sys_mysql_bin_log_pos; + +/* The transaction system */ +extern trx_sys_t* trx_sys; + +/* Doublewrite system */ +extern trx_doublewrite_t* trx_doublewrite; +extern ibool trx_doublewrite_must_reset_space_ids; +extern ibool trx_sys_multiple_tablespace_format; + +/******************************************************************** +Creates the doublewrite buffer to a new InnoDB installation. The header of the +doublewrite buffer is placed on the trx system header page. */ +UNIV_INTERN +void +trx_sys_create_doublewrite_buf(void); +/*================================*/ +/******************************************************************** +At a database startup initializes the doublewrite buffer memory structure if +we already have a doublewrite buffer created in the data files. If we are +upgrading to an InnoDB version which supports multiple tablespaces, then this +function performs the necessary update operations. If we are in a crash +recovery, this function uses a possible doublewrite buffer to restore +half-written pages in the data files. */ +UNIV_INTERN +void +trx_sys_doublewrite_init_or_restore_pages( +/*======================================*/ + ibool restore_corrupt_pages); +/******************************************************************** +Marks the trx sys header when we have successfully upgraded to the >= 4.1.x +multiple tablespace format. */ +UNIV_INTERN +void +trx_sys_mark_upgraded_to_multiple_tablespaces(void); +/*===============================================*/ +/******************************************************************** +Determines if a page number is located inside the doublewrite buffer. */ +UNIV_INTERN +ibool +trx_doublewrite_page_inside( +/*========================*/ + /* out: TRUE if the location is inside + the two blocks of the doublewrite buffer */ + ulint page_no); /* in: page number */ +/******************************************************************* +Checks if a page address is the trx sys header page. */ +UNIV_INLINE +ibool +trx_sys_hdr_page( +/*=============*/ + /* out: TRUE if trx sys header page */ + ulint space, /* in: space */ + ulint page_no);/* in: page number */ +/********************************************************************* +Creates and initializes the central memory structures for the transaction +system. This is called when the database is started. */ +UNIV_INTERN +void +trx_sys_init_at_db_start(void); +/*==========================*/ +/********************************************************************* +Creates and initializes the transaction system at the database creation. */ +UNIV_INTERN +void +trx_sys_create(void); +/*================*/ +/********************************************************************* +Create extra rollback segments when create_new_db */ +UNIV_INTERN +void +trx_sys_create_extra_rseg( +/*======================*/ + ulint num); /* in: number of extra user rollback segments */ +/******************************************************************** +Looks for a free slot for a rollback segment in the trx system file copy. */ +UNIV_INTERN +ulint +trx_sysf_rseg_find_free( +/*====================*/ + /* out: slot index or ULINT_UNDEFINED + if not found */ + mtr_t* mtr); /* in: mtr */ +/******************************************************************* +Gets the pointer in the nth slot of the rseg array. */ +UNIV_INLINE +trx_rseg_t* +trx_sys_get_nth_rseg( +/*=================*/ + /* out: pointer to rseg object, NULL if slot + not in use */ + trx_sys_t* sys, /* in: trx system */ + ulint n); /* in: index of slot */ +/******************************************************************* +Sets the pointer in the nth slot of the rseg array. */ +UNIV_INLINE +void +trx_sys_set_nth_rseg( +/*=================*/ + trx_sys_t* sys, /* in: trx system */ + ulint n, /* in: index of slot */ + trx_rseg_t* rseg); /* in: pointer to rseg object, NULL if slot + not in use */ +/************************************************************************** +Gets a pointer to the transaction system file copy and x-locks its page. */ +UNIV_INLINE +trx_sysf_t* +trx_sysf_get( +/*=========*/ + /* out: pointer to system file copy, page x-locked */ + mtr_t* mtr); /* in: mtr */ +/********************************************************************* +Gets the space of the nth rollback segment slot in the trx system +file copy. */ +UNIV_INLINE +ulint +trx_sysf_rseg_get_space( +/*====================*/ + /* out: space id */ + trx_sysf_t* sys_header, /* in: trx sys file copy */ + ulint i, /* in: slot index == rseg id */ + mtr_t* mtr); /* in: mtr */ +/********************************************************************* +Gets the page number of the nth rollback segment slot in the trx system +file copy. */ +UNIV_INLINE +ulint +trx_sysf_rseg_get_page_no( +/*======================*/ + /* out: page number, FIL_NULL + if slot unused */ + trx_sysf_t* sys_header, /* in: trx sys file copy */ + ulint i, /* in: slot index == rseg id */ + mtr_t* mtr); /* in: mtr */ +/********************************************************************* +Sets the space id of the nth rollback segment slot in the trx system +file copy. */ +UNIV_INLINE +void +trx_sysf_rseg_set_space( +/*====================*/ + trx_sysf_t* sys_header, /* in: trx sys file copy */ + ulint i, /* in: slot index == rseg id */ + ulint space, /* in: space id */ + mtr_t* mtr); /* in: mtr */ +/********************************************************************* +Sets the page number of the nth rollback segment slot in the trx system +file copy. */ +UNIV_INLINE +void +trx_sysf_rseg_set_page_no( +/*======================*/ + trx_sysf_t* sys_header, /* in: trx sys file copy */ + ulint i, /* in: slot index == rseg id */ + ulint page_no, /* in: page number, FIL_NULL if + the slot is reset to unused */ + mtr_t* mtr); /* in: mtr */ +/********************************************************************* +Allocates a new transaction id. */ +UNIV_INLINE +dulint +trx_sys_get_new_trx_id(void); +/*========================*/ + /* out: new, allocated trx id */ +/********************************************************************* +Allocates a new transaction number. */ +UNIV_INLINE +dulint +trx_sys_get_new_trx_no(void); +/*========================*/ + /* out: new, allocated trx number */ +/********************************************************************* +Writes a trx id to an index page. In case that the id size changes in +some future version, this function should be used instead of +mach_write_... */ +UNIV_INLINE +void +trx_write_trx_id( +/*=============*/ + byte* ptr, /* in: pointer to memory where written */ + dulint id); /* in: id */ +/********************************************************************* +Reads a trx id from an index page. In case that the id size changes in +some future version, this function should be used instead of +mach_read_... */ +UNIV_INLINE +dulint +trx_read_trx_id( +/*============*/ + /* out: id */ + const byte* ptr); /* in: pointer to memory from where to read */ +/******************************************************************** +Looks for the trx handle with the given id in trx_list. */ +UNIV_INLINE +trx_t* +trx_get_on_id( +/*==========*/ + /* out: the trx handle or NULL if not found */ + dulint trx_id); /* in: trx id to search for */ +/******************************************************************** +Returns the minumum trx id in trx list. This is the smallest id for which +the trx can possibly be active. (But, you must look at the trx->conc_state to +find out if the minimum trx id transaction itself is active, or already +committed.) */ +UNIV_INLINE +dulint +trx_list_get_min_trx_id(void); +/*=========================*/ + /* out: the minimum trx id, or trx_sys->max_trx_id + if the trx list is empty */ +/******************************************************************** +Checks if a transaction with the given id is active. */ +UNIV_INLINE +ibool +trx_is_active( +/*==========*/ + /* out: TRUE if active */ + dulint trx_id);/* in: trx id of the transaction */ +/******************************************************************** +Checks that trx is in the trx list. */ +UNIV_INTERN +ibool +trx_in_trx_list( +/*============*/ + /* out: TRUE if is in */ + trx_t* in_trx);/* in: trx */ +/********************************************************************* +Updates the offset information about the end of the MySQL binlog entry +which corresponds to the transaction just being committed. In a MySQL +replication slave updates the latest master binlog position up to which +replication has proceeded. */ +UNIV_INTERN +void +trx_sys_update_mysql_binlog_offset( +/*===============================*/ + const char* file_name_in,/* in: MySQL log file name */ + ib_int64_t offset, /* in: position in that log file */ + ulint field, /* in: offset of the MySQL log info field in + the trx sys header */ + mtr_t* mtr); /* in: mtr */ +/********************************************************************* +Prints to stderr the MySQL binlog offset info in the trx system header if +the magic number shows it valid. */ +UNIV_INTERN +void +trx_sys_print_mysql_binlog_offset(void); +/*===================================*/ +#ifdef UNIV_HOTBACKUP +/********************************************************************* +Prints to stderr the MySQL binlog info in the system header if the +magic number shows it valid. */ +UNIV_INTERN +void +trx_sys_print_mysql_binlog_offset_from_page( +/*========================================*/ + const byte* page); /* in: buffer containing the trx + system header page, i.e., page number + TRX_SYS_PAGE_NO in the tablespace */ +#endif /* UNIV_HOTBACKUP */ +/********************************************************************* +Prints to stderr the MySQL master log offset info in the trx system header if +the magic number shows it valid. */ +UNIV_INTERN +void +trx_sys_print_mysql_master_log_pos(void); +/*====================================*/ +/********************************************************************* +Initializes the tablespace tag system. */ +UNIV_INTERN +void +trx_sys_file_format_init(void); +/*==========================*/ +/********************************************************************* +Closes the tablespace tag system. */ +UNIV_INTERN +void +trx_sys_file_format_close(void); +/*===========================*/ +/************************************************************************ +Tags the system table space with minimum format id if it has not been +tagged yet. +WARNING: This function is only called during the startup and AFTER the +redo log application during recovery has finished. */ +UNIV_INTERN +void +trx_sys_file_format_tag_init(void); +/*==============================*/ +/********************************************************************* +Get the name representation of the file format from its id. */ +UNIV_INTERN +const char* +trx_sys_file_format_id_to_name( +/*===========================*/ + /* out: pointer to the name */ + const ulint id); /* in: id of the file format */ +/********************************************************************* +Set the file format id unconditionally except if it's already the +same value. */ +UNIV_INTERN +ibool +trx_sys_file_format_max_set( +/*========================*/ + /* out: TRUE if value updated */ + ulint format_id, /* in: file format id */ + const char** name); /* out: max file format name or + NULL if not needed. */ +/********************************************************************* +Get the name representation of the file format from its id. */ +UNIV_INTERN +const char* +trx_sys_file_format_max_get(void); +/*=============================*/ + /* out: pointer to the max format name */ +/********************************************************************* +Check for the max file format tag stored on disk. */ +UNIV_INTERN +ulint +trx_sys_file_format_max_check( +/*==========================*/ + /* out: DB_SUCCESS or error code */ + ulint max_format_id); /* in: the max format id to check */ +/************************************************************************ +Update the file format tag in the system tablespace only if the given +format id is greater than the known max id. */ +UNIV_INTERN +ibool +trx_sys_file_format_max_upgrade( +/*============================*/ + /* out: TRUE if format_id was + bigger than the known max id */ + const char** name, /* out: max file format name */ + ulint format_id); /* in: file format identifier */ +/* The automatically created system rollback segment has this id */ +#define TRX_SYS_SYSTEM_RSEG_ID 0 + +/* Space id and page no where the trx system file copy resides */ +#define TRX_SYS_SPACE 0 /* the SYSTEM tablespace */ +#define TRX_SYS_PAGE_NO FSP_TRX_SYS_PAGE_NO + +/* The offset of the transaction system header on the page */ +#define TRX_SYS FSEG_PAGE_DATA + +/* Transaction system header */ +/*-------------------------------------------------------------*/ +#define TRX_SYS_TRX_ID_STORE 0 /* the maximum trx id or trx number + modulo TRX_SYS_TRX_ID_UPDATE_MARGIN + written to a file page by any + transaction; the assignment of + transaction ids continues from this + number rounded up by .._MARGIN plus + .._MARGIN when the database is + started */ +#define TRX_SYS_FSEG_HEADER 8 /* segment header for the tablespace + segment the trx system is created + into */ +#define TRX_SYS_RSEGS (8 + FSEG_HEADER_SIZE) + /* the start of the array of rollback + segment specification slots */ +/*-------------------------------------------------------------*/ + +/* Max number of rollback segments: the number of segment specification slots +in the transaction system array; rollback segment id must fit in one byte, +therefore 256; each slot is currently 8 bytes in size */ +#define TRX_SYS_N_RSEGS 256 + +#define TRX_SYS_MYSQL_LOG_NAME_LEN 512 +#define TRX_SYS_MYSQL_MASTER_LOG_NAME_LEN 480 /* (500 - 12) is dead line. */ +#define TRX_SYS_MYSQL_LOG_MAGIC_N 873422344 + +#if UNIV_PAGE_SIZE < 4096 +# error "UNIV_PAGE_SIZE < 4096" +#endif +/* The offset of the MySQL replication info in the trx system header; +this contains the same fields as TRX_SYS_MYSQL_LOG_INFO below */ +#define TRX_SYS_MYSQL_MASTER_LOG_INFO (UNIV_PAGE_SIZE - 2000) +#define TRX_SYS_MYSQL_RELAY_LOG_INFO (UNIV_PAGE_SIZE - 1500) + +/* The offset of the MySQL binlog offset info in the trx system header */ +#define TRX_SYS_MYSQL_LOG_INFO (UNIV_PAGE_SIZE - 1000) +#define TRX_SYS_MYSQL_LOG_MAGIC_N_FLD 0 /* magic number which shows + if we have valid data in the + MySQL binlog info; the value + is ..._MAGIC_N if yes */ +#define TRX_SYS_MYSQL_LOG_OFFSET_HIGH 4 /* high 4 bytes of the offset + within that file */ +#define TRX_SYS_MYSQL_LOG_OFFSET_LOW 8 /* low 4 bytes of the offset + within that file */ +#define TRX_SYS_MYSQL_LOG_NAME 12 /* MySQL log file name */ + +/* The offset of the doublewrite buffer header on the trx system header page */ +#define TRX_SYS_DOUBLEWRITE (UNIV_PAGE_SIZE - 200) +/*-------------------------------------------------------------*/ +#define TRX_SYS_DOUBLEWRITE_FSEG 0 /* fseg header of the fseg + containing the doublewrite + buffer */ +#define TRX_SYS_DOUBLEWRITE_MAGIC FSEG_HEADER_SIZE + /* 4-byte magic number which + shows if we already have + created the doublewrite + buffer */ +#define TRX_SYS_DOUBLEWRITE_BLOCK1 (4 + FSEG_HEADER_SIZE) + /* page number of the + first page in the first + sequence of 64 + (= FSP_EXTENT_SIZE) consecutive + pages in the doublewrite + buffer */ +#define TRX_SYS_DOUBLEWRITE_BLOCK2 (8 + FSEG_HEADER_SIZE) + /* page number of the + first page in the second + sequence of 64 consecutive + pages in the doublewrite + buffer */ +#define TRX_SYS_DOUBLEWRITE_REPEAT 12 /* we repeat the above 3 + numbers so that if the trx + sys header is half-written + to disk, we still may be able + to recover the information */ +#define TRX_SYS_DOUBLEWRITE_SPACE_ID_STORED (24 + FSEG_HEADER_SIZE) + /* If this is not yet set to + .._N, we must reset the + doublewrite buffer, because + starting from 4.1.x the space + id of a data page is stored to + FIL_PAGE_ARCH_LOG_NO_OR_SPACE_NO */ +/*-------------------------------------------------------------*/ +#define TRX_SYS_DOUBLEWRITE_MAGIC_N 536853855 +#define TRX_SYS_DOUBLEWRITE_SPACE_ID_STORED_N 1783657386 + + +#define TRX_SYS_DOUBLEWRITE_BLOCK_SIZE FSP_EXTENT_SIZE + +/* The offset of the file format tag on the trx system header page */ +#define TRX_SYS_FILE_FORMAT_TAG (UNIV_PAGE_SIZE - 16) + +/* We use these random constants to reduce the probability of reading +garbage (from previous versions) that maps to an actual format id. We +use these as bit masks at the time of reading and writing from/to disk. */ +#define TRX_SYS_FILE_FORMAT_TAG_MAGIC_N_LOW 3645922177UL +#define TRX_SYS_FILE_FORMAT_TAG_MAGIC_N_HIGH 2745987765UL + +/* Doublewrite control struct */ +struct trx_doublewrite_struct{ + mutex_t mutex; /* mutex protecting the first_free field and + write_buf */ + ulint block1; /* the page number of the first + doublewrite block (64 pages) */ + ulint block2; /* page number of the second block */ + ulint first_free; /* first free position in write_buf measured + in units of UNIV_PAGE_SIZE */ + byte* write_buf; /* write buffer used in writing to the + doublewrite buffer, aligned to an + address divisible by UNIV_PAGE_SIZE + (which is required by Windows aio) */ + byte* write_buf_unaligned; /* pointer to write_buf, but unaligned */ + buf_page_t** + buf_block_arr; /* array to store pointers to the buffer + blocks which have been cached to write_buf */ +}; + +/* The transaction system central memory data structure; protected by the +kernel mutex */ +struct trx_sys_struct{ + dulint max_trx_id; /* The smallest number not yet + assigned as a transaction id or + transaction number */ + UT_LIST_BASE_NODE_T(trx_t) trx_list; + /* List of active and committed in + memory transactions, sorted on trx id, + biggest first */ + UT_LIST_BASE_NODE_T(trx_t) mysql_trx_list; + /* List of transactions created + for MySQL */ + UT_LIST_BASE_NODE_T(trx_rseg_t) rseg_list; + /* List of rollback segment objects */ + trx_rseg_t* latest_rseg; /* Latest rollback segment in the + round-robin assignment of rollback + segments to transactions */ + trx_rseg_t* rseg_array[TRX_SYS_N_RSEGS]; + /* Pointer array to rollback segments; + NULL if slot not in use */ + ulint rseg_history_len;/* Length of the TRX_RSEG_HISTORY + list (update undo logs for committed + transactions), protected by + rseg->mutex */ + UT_LIST_BASE_NODE_T(read_view_t) view_list; + /* List of read views sorted on trx no, + biggest first */ +}; + +/* When a trx id which is zero modulo this number (which must be a power of +two) is assigned, the field TRX_SYS_TRX_ID_STORE on the transaction system +page is updated */ +#define TRX_SYS_TRX_ID_WRITE_MARGIN 256 + +#ifndef UNIV_NONINL +#include "trx0sys.ic" +#endif + +#endif === added file 'storage/xtradb/include/trx0sys.ic' --- a/storage/xtradb/include/trx0sys.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/trx0sys.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,383 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Transaction system + +Created 3/26/1996 Heikki Tuuri +*******************************************************/ + +#include "srv0srv.h" +#include "trx0trx.h" + +/* The typedef for rseg slot in the file copy */ +typedef byte trx_sysf_rseg_t; + +/* Rollback segment specification slot offsets */ +/*-------------------------------------------------------------*/ +#define TRX_SYS_RSEG_SPACE 0 /* space where the the segment + header is placed; starting with + MySQL/InnoDB 5.1.7, this is + UNIV_UNDEFINED if the slot is unused */ +#define TRX_SYS_RSEG_PAGE_NO 4 /* page number where the the segment + header is placed; this is FIL_NULL + if the slot is unused */ +/*-------------------------------------------------------------*/ +/* Size of a rollback segment specification slot */ +#define TRX_SYS_RSEG_SLOT_SIZE 8 + +/********************************************************************* +Writes the value of max_trx_id to the file based trx system header. */ +UNIV_INTERN +void +trx_sys_flush_max_trx_id(void); +/*==========================*/ + +/******************************************************************* +Checks if a page address is the trx sys header page. */ +UNIV_INLINE +ibool +trx_sys_hdr_page( +/*=============*/ + /* out: TRUE if trx sys header page */ + ulint space, /* in: space */ + ulint page_no)/* in: page number */ +{ + if ((space == TRX_SYS_SPACE) && (page_no == TRX_SYS_PAGE_NO)) { + + return(TRUE); + } + + return(FALSE); +} + +/******************************************************************* +Gets the pointer in the nth slot of the rseg array. */ +UNIV_INLINE +trx_rseg_t* +trx_sys_get_nth_rseg( +/*=================*/ + /* out: pointer to rseg object, NULL if slot + not in use */ + trx_sys_t* sys, /* in: trx system */ + ulint n) /* in: index of slot */ +{ + ut_ad(mutex_own(&(kernel_mutex))); + ut_ad(n < TRX_SYS_N_RSEGS); + + return(sys->rseg_array[n]); +} + +/******************************************************************* +Sets the pointer in the nth slot of the rseg array. */ +UNIV_INLINE +void +trx_sys_set_nth_rseg( +/*=================*/ + trx_sys_t* sys, /* in: trx system */ + ulint n, /* in: index of slot */ + trx_rseg_t* rseg) /* in: pointer to rseg object, NULL if slot + not in use */ +{ + ut_ad(n < TRX_SYS_N_RSEGS); + + sys->rseg_array[n] = rseg; +} + +/************************************************************************** +Gets a pointer to the transaction system header and x-latches its page. */ +UNIV_INLINE +trx_sysf_t* +trx_sysf_get( +/*=========*/ + /* out: pointer to system header, page x-latched. */ + mtr_t* mtr) /* in: mtr */ +{ + buf_block_t* block; + trx_sysf_t* header; + + ut_ad(mtr); + + block = buf_page_get(TRX_SYS_SPACE, 0, TRX_SYS_PAGE_NO, + RW_X_LATCH, mtr); + buf_block_dbg_add_level(block, SYNC_TRX_SYS_HEADER); + + header = TRX_SYS + buf_block_get_frame(block); + + return(header); +} + +/********************************************************************* +Gets the space of the nth rollback segment slot in the trx system +file copy. */ +UNIV_INLINE +ulint +trx_sysf_rseg_get_space( +/*====================*/ + /* out: space id */ + trx_sysf_t* sys_header, /* in: trx sys header */ + ulint i, /* in: slot index == rseg id */ + mtr_t* mtr) /* in: mtr */ +{ + ut_ad(mutex_own(&(kernel_mutex))); + ut_ad(sys_header); + ut_ad(i < TRX_SYS_N_RSEGS); + + return(mtr_read_ulint(sys_header + TRX_SYS_RSEGS + + i * TRX_SYS_RSEG_SLOT_SIZE + + TRX_SYS_RSEG_SPACE, MLOG_4BYTES, mtr)); +} + +/********************************************************************* +Gets the page number of the nth rollback segment slot in the trx system +header. */ +UNIV_INLINE +ulint +trx_sysf_rseg_get_page_no( +/*======================*/ + /* out: page number, FIL_NULL + if slot unused */ + trx_sysf_t* sys_header, /* in: trx system header */ + ulint i, /* in: slot index == rseg id */ + mtr_t* mtr) /* in: mtr */ +{ + ut_ad(sys_header); + ut_ad(mutex_own(&(kernel_mutex))); + ut_ad(i < TRX_SYS_N_RSEGS); + + return(mtr_read_ulint(sys_header + TRX_SYS_RSEGS + + i * TRX_SYS_RSEG_SLOT_SIZE + + TRX_SYS_RSEG_PAGE_NO, MLOG_4BYTES, mtr)); +} + +/********************************************************************* +Sets the space id of the nth rollback segment slot in the trx system +file copy. */ +UNIV_INLINE +void +trx_sysf_rseg_set_space( +/*====================*/ + trx_sysf_t* sys_header, /* in: trx sys file copy */ + ulint i, /* in: slot index == rseg id */ + ulint space, /* in: space id */ + mtr_t* mtr) /* in: mtr */ +{ + ut_ad(mutex_own(&(kernel_mutex))); + ut_ad(sys_header); + ut_ad(i < TRX_SYS_N_RSEGS); + + mlog_write_ulint(sys_header + TRX_SYS_RSEGS + + i * TRX_SYS_RSEG_SLOT_SIZE + + TRX_SYS_RSEG_SPACE, + space, + MLOG_4BYTES, mtr); +} + +/********************************************************************* +Sets the page number of the nth rollback segment slot in the trx system +header. */ +UNIV_INLINE +void +trx_sysf_rseg_set_page_no( +/*======================*/ + trx_sysf_t* sys_header, /* in: trx sys header */ + ulint i, /* in: slot index == rseg id */ + ulint page_no, /* in: page number, FIL_NULL if the + slot is reset to unused */ + mtr_t* mtr) /* in: mtr */ +{ + ut_ad(mutex_own(&(kernel_mutex))); + ut_ad(sys_header); + ut_ad(i < TRX_SYS_N_RSEGS); + + mlog_write_ulint(sys_header + TRX_SYS_RSEGS + + i * TRX_SYS_RSEG_SLOT_SIZE + + TRX_SYS_RSEG_PAGE_NO, + page_no, + MLOG_4BYTES, mtr); +} + +/********************************************************************* +Writes a trx id to an index page. In case that the id size changes in +some future version, this function should be used instead of +mach_write_... */ +UNIV_INLINE +void +trx_write_trx_id( +/*=============*/ + byte* ptr, /* in: pointer to memory where written */ + dulint id) /* in: id */ +{ +#if DATA_TRX_ID_LEN != 6 +# error "DATA_TRX_ID_LEN != 6" +#endif + mach_write_to_6(ptr, id); +} + +/********************************************************************* +Reads a trx id from an index page. In case that the id size changes in +some future version, this function should be used instead of +mach_read_... */ +UNIV_INLINE +dulint +trx_read_trx_id( +/*============*/ + /* out: id */ + const byte* ptr) /* in: pointer to memory from where to read */ +{ +#if DATA_TRX_ID_LEN != 6 +# error "DATA_TRX_ID_LEN != 6" +#endif + return(mach_read_from_6(ptr)); +} + +/******************************************************************** +Looks for the trx handle with the given id in trx_list. */ +UNIV_INLINE +trx_t* +trx_get_on_id( +/*==========*/ + /* out: the trx handle or NULL if not found */ + dulint trx_id) /* in: trx id to search for */ +{ + trx_t* trx; + + ut_ad(mutex_own(&(kernel_mutex))); + + trx = UT_LIST_GET_FIRST(trx_sys->trx_list); + + while (trx != NULL) { + if (0 == ut_dulint_cmp(trx_id, trx->id)) { + + return(trx); + } + + trx = UT_LIST_GET_NEXT(trx_list, trx); + } + + return(NULL); +} + +/******************************************************************** +Returns the minumum trx id in trx list. This is the smallest id for which +the trx can possibly be active. (But, you must look at the trx->conc_state to +find out if the minimum trx id transaction itself is active, or already +committed.) */ +UNIV_INLINE +dulint +trx_list_get_min_trx_id(void) +/*=========================*/ + /* out: the minimum trx id, or trx_sys->max_trx_id + if the trx list is empty */ +{ + trx_t* trx; + + ut_ad(mutex_own(&(kernel_mutex))); + + trx = UT_LIST_GET_LAST(trx_sys->trx_list); + + if (trx == NULL) { + + return(trx_sys->max_trx_id); + } + + return(trx->id); +} + +/******************************************************************** +Checks if a transaction with the given id is active. */ +UNIV_INLINE +ibool +trx_is_active( +/*==========*/ + /* out: TRUE if active */ + dulint trx_id) /* in: trx id of the transaction */ +{ + trx_t* trx; + + ut_ad(mutex_own(&(kernel_mutex))); + + if (ut_dulint_cmp(trx_id, trx_list_get_min_trx_id()) < 0) { + + return(FALSE); + } + + if (ut_dulint_cmp(trx_id, trx_sys->max_trx_id) >= 0) { + + /* There must be corruption: we return TRUE because this + function is only called by lock_clust_rec_some_has_impl() + and row_vers_impl_x_locked_off_kernel() and they have + diagnostic prints in this case */ + + return(TRUE); + } + + trx = trx_get_on_id(trx_id); + if (trx && (trx->conc_state == TRX_ACTIVE + || trx->conc_state == TRX_PREPARED)) { + + return(TRUE); + } + + return(FALSE); +} + +/********************************************************************* +Allocates a new transaction id. */ +UNIV_INLINE +dulint +trx_sys_get_new_trx_id(void) +/*========================*/ + /* out: new, allocated trx id */ +{ + dulint id; + + ut_ad(mutex_own(&kernel_mutex)); + + /* VERY important: after the database is started, max_trx_id value is + divisible by TRX_SYS_TRX_ID_WRITE_MARGIN, and the following if + will evaluate to TRUE when this function is first time called, + and the value for trx id will be written to disk-based header! + Thus trx id values will not overlap when the database is + repeatedly started! */ + + if (ut_dulint_get_low(trx_sys->max_trx_id) + % TRX_SYS_TRX_ID_WRITE_MARGIN == 0) { + + trx_sys_flush_max_trx_id(); + } + + id = trx_sys->max_trx_id; + + UT_DULINT_INC(trx_sys->max_trx_id); + + return(id); +} + +/********************************************************************* +Allocates a new transaction number. */ +UNIV_INLINE +dulint +trx_sys_get_new_trx_no(void) +/*========================*/ + /* out: new, allocated trx number */ +{ + ut_ad(mutex_own(&kernel_mutex)); + + return(trx_sys_get_new_trx_id()); +} === added file 'storage/xtradb/include/trx0trx.h' --- a/storage/xtradb/include/trx0trx.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/trx0trx.h 2009-04-07 20:51:15 +0000 @@ -0,0 +1,860 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +The transaction + +Created 3/26/1996 Heikki Tuuri +*******************************************************/ + +#ifndef trx0trx_h +#define trx0trx_h + +#include "univ.i" +#include "trx0types.h" +#include "lock0types.h" +#include "usr0types.h" +#include "que0types.h" +#include "mem0mem.h" +#include "read0types.h" +#include "dict0types.h" +#include "trx0xa.h" +#include "ut0vec.h" + +/* Dummy session used currently in MySQL interface */ +extern sess_t* trx_dummy_sess; + +/* Number of transactions currently allocated for MySQL: protected by +the kernel mutex */ +extern ulint trx_n_mysql_transactions; + +/***************************************************************** +Resets the new record lock info in a transaction struct. */ +UNIV_INLINE +void +trx_reset_new_rec_lock_info( +/*========================*/ + trx_t* trx); /* in: transaction struct */ +/***************************************************************** +Registers that we have set a new record lock on an index. We only have space +to store 2 indexes! If this is called to store more than 2 indexes after +trx_reset_new_rec_lock_info(), then this function does nothing. */ +UNIV_INLINE +void +trx_register_new_rec_lock( +/*======================*/ + trx_t* trx, /* in: transaction struct */ + dict_index_t* index); /* in: trx sets a new record lock on this + index */ +/***************************************************************** +Checks if trx has set a new record lock on an index. */ +UNIV_INLINE +ibool +trx_new_rec_locks_contain( +/*======================*/ + /* out: TRUE if trx has set a new record lock + on index */ + trx_t* trx, /* in: transaction struct */ + dict_index_t* index); /* in: index */ +/************************************************************************ +Releases the search latch if trx has reserved it. */ +UNIV_INTERN +void +trx_search_latch_release_if_reserved( +/*=================================*/ + trx_t* trx); /* in: transaction */ +/********************************************************************** +Set detailed error message for the transaction. */ +UNIV_INTERN +void +trx_set_detailed_error( +/*===================*/ + trx_t* trx, /* in: transaction struct */ + const char* msg); /* in: detailed error message */ +/***************************************************************** +Set detailed error message for the transaction from a file. Note that the +file is rewinded before reading from it. */ +UNIV_INTERN +void +trx_set_detailed_error_from_file( +/*=============================*/ + trx_t* trx, /* in: transaction struct */ + FILE* file); /* in: file to read message from */ +/******************************************************************** +Retrieves the error_info field from a trx. */ +UNIV_INLINE +const dict_index_t* +trx_get_error_info( +/*===============*/ + /* out: the error info */ + const trx_t* trx); /* in: trx object */ +/******************************************************************** +Creates and initializes a transaction object. */ +UNIV_INTERN +trx_t* +trx_create( +/*=======*/ + /* out, own: the transaction */ + sess_t* sess) /* in: session */ + __attribute__((nonnull)); +/************************************************************************ +Creates a transaction object for MySQL. */ +UNIV_INTERN +trx_t* +trx_allocate_for_mysql(void); +/*========================*/ + /* out, own: transaction object */ +/************************************************************************ +Creates a transaction object for background operations by the master thread. */ +UNIV_INTERN +trx_t* +trx_allocate_for_background(void); +/*=============================*/ + /* out, own: transaction object */ +/************************************************************************ +Frees a transaction object. */ +UNIV_INTERN +void +trx_free( +/*=====*/ + trx_t* trx); /* in, own: trx object */ +/************************************************************************ +Frees a transaction object for MySQL. */ +UNIV_INTERN +void +trx_free_for_mysql( +/*===============*/ + trx_t* trx); /* in, own: trx object */ +/************************************************************************ +Frees a transaction object of a background operation of the master thread. */ +UNIV_INTERN +void +trx_free_for_background( +/*====================*/ + trx_t* trx); /* in, own: trx object */ +/******************************************************************** +Creates trx objects for transactions and initializes the trx list of +trx_sys at database start. Rollback segment and undo log lists must +already exist when this function is called, because the lists of +transactions to be rolled back or cleaned up are built based on the +undo log lists. */ +UNIV_INTERN +void +trx_lists_init_at_db_start(void); +/*============================*/ +/******************************************************************** +Starts a new transaction. */ +UNIV_INTERN +ibool +trx_start( +/*======*/ + /* out: TRUE if success, FALSE if the rollback + segment could not support this many transactions */ + trx_t* trx, /* in: transaction */ + ulint rseg_id);/* in: rollback segment id; if ULINT_UNDEFINED + is passed, the system chooses the rollback segment + automatically in a round-robin fashion */ +/******************************************************************** +Starts a new transaction. */ +UNIV_INTERN +ibool +trx_start_low( +/*==========*/ + /* out: TRUE */ + trx_t* trx, /* in: transaction */ + ulint rseg_id);/* in: rollback segment id; if ULINT_UNDEFINED + is passed, the system chooses the rollback segment + automatically in a round-robin fashion */ +/***************************************************************** +Starts the transaction if it is not yet started. */ +UNIV_INLINE +void +trx_start_if_not_started( +/*=====================*/ + trx_t* trx); /* in: transaction */ +/***************************************************************** +Starts the transaction if it is not yet started. Assumes we have reserved +the kernel mutex! */ +UNIV_INLINE +void +trx_start_if_not_started_low( +/*=========================*/ + trx_t* trx); /* in: transaction */ +/******************************************************************** +Commits a transaction. */ +UNIV_INTERN +void +trx_commit_off_kernel( +/*==================*/ + trx_t* trx); /* in: transaction */ +/******************************************************************** +Cleans up a transaction at database startup. The cleanup is needed if +the transaction already got to the middle of a commit when the database +crashed, andf we cannot roll it back. */ +UNIV_INTERN +void +trx_cleanup_at_db_startup( +/*======================*/ + trx_t* trx); /* in: transaction */ +/************************************************************************** +Does the transaction commit for MySQL. */ +UNIV_INTERN +ulint +trx_commit_for_mysql( +/*=================*/ + /* out: DB_SUCCESS or error number */ + trx_t* trx); /* in: trx handle */ +/************************************************************************** +Does the transaction prepare for MySQL. */ +UNIV_INTERN +ulint +trx_prepare_for_mysql( +/*==================*/ + /* out: 0 or error number */ + trx_t* trx); /* in: trx handle */ +/************************************************************************** +This function is used to find number of prepared transactions and +their transaction objects for a recovery. */ +UNIV_INTERN +int +trx_recover_for_mysql( +/*==================*/ + /* out: number of prepared transactions */ + XID* xid_list, /* in/out: prepared transactions */ + ulint len); /* in: number of slots in xid_list */ +/*********************************************************************** +This function is used to find one X/Open XA distributed transaction +which is in the prepared state */ +UNIV_INTERN +trx_t * +trx_get_trx_by_xid( +/*===============*/ + /* out: trx or NULL */ + XID* xid); /* in: X/Open XA transaction identification */ +/************************************************************************** +If required, flushes the log to disk if we called trx_commit_for_mysql() +with trx->flush_log_later == TRUE. */ +UNIV_INTERN +ulint +trx_commit_complete_for_mysql( +/*==========================*/ + /* out: 0 or error number */ + trx_t* trx); /* in: trx handle */ +/************************************************************************** +Marks the latest SQL statement ended. */ +UNIV_INTERN +void +trx_mark_sql_stat_end( +/*==================*/ + trx_t* trx); /* in: trx handle */ +/************************************************************************ +Assigns a read view for a consistent read query. All the consistent reads +within the same transaction will get the same read view, which is created +when this function is first called for a new started transaction. */ +UNIV_INTERN +read_view_t* +trx_assign_read_view( +/*=================*/ + /* out: consistent read view */ + trx_t* trx); /* in: active transaction */ +/*************************************************************** +The transaction must be in the TRX_QUE_LOCK_WAIT state. Puts it to +the TRX_QUE_RUNNING state and releases query threads which were +waiting for a lock in the wait_thrs list. */ +UNIV_INTERN +void +trx_end_lock_wait( +/*==============*/ + trx_t* trx); /* in: transaction */ +/******************************************************************** +Sends a signal to a trx object. */ +UNIV_INTERN +void +trx_sig_send( +/*=========*/ + trx_t* trx, /* in: trx handle */ + ulint type, /* in: signal type */ + ulint sender, /* in: TRX_SIG_SELF or + TRX_SIG_OTHER_SESS */ + que_thr_t* receiver_thr, /* in: query thread which wants the + reply, or NULL; if type is + TRX_SIG_END_WAIT, this must be NULL */ + trx_savept_t* savept, /* in: possible rollback savepoint, or + NULL */ + que_thr_t** next_thr); /* in/out: next query thread to run; + if the value which is passed in is + a pointer to a NULL pointer, then the + calling function can start running + a new query thread; if the parameter + is NULL, it is ignored */ +/******************************************************************** +Send the reply message when a signal in the queue of the trx has +been handled. */ +UNIV_INTERN +void +trx_sig_reply( +/*==========*/ + trx_sig_t* sig, /* in: signal */ + que_thr_t** next_thr); /* in/out: next query thread to run; + if the value which is passed in is + a pointer to a NULL pointer, then the + calling function can start running + a new query thread */ +/******************************************************************** +Removes the signal object from a trx signal queue. */ +UNIV_INTERN +void +trx_sig_remove( +/*===========*/ + trx_t* trx, /* in: trx handle */ + trx_sig_t* sig); /* in, own: signal */ +/******************************************************************** +Starts handling of a trx signal. */ +UNIV_INTERN +void +trx_sig_start_handle( +/*=================*/ + trx_t* trx, /* in: trx handle */ + que_thr_t** next_thr); /* in/out: next query thread to run; + if the value which is passed in is + a pointer to a NULL pointer, then the + calling function can start running + a new query thread */ +/******************************************************************** +Ends signal handling. If the session is in the error state, and +trx->graph_before_signal_handling != NULL, returns control to the error +handling routine of the graph (currently only returns the control to the +graph root which then sends an error message to the client). */ +UNIV_INTERN +void +trx_end_signal_handling( +/*====================*/ + trx_t* trx); /* in: trx */ +/************************************************************************* +Creates a commit command node struct. */ +UNIV_INTERN +commit_node_t* +commit_node_create( +/*===============*/ + /* out, own: commit node struct */ + mem_heap_t* heap); /* in: mem heap where created */ +/*************************************************************** +Performs an execution step for a commit type node in a query graph. */ +UNIV_INTERN +que_thr_t* +trx_commit_step( +/*============*/ + /* out: query thread to run next, or NULL */ + que_thr_t* thr); /* in: query thread */ + +/************************************************************************** +Prints info about a transaction to the given file. The caller must own the +kernel mutex and must have called +innobase_mysql_prepare_print_arbitrary_thd(), unless he knows that MySQL +or InnoDB cannot meanwhile change the info printed here. */ +UNIV_INTERN +void +trx_print( +/*======*/ + FILE* f, /* in: output stream */ + trx_t* trx, /* in: transaction */ + ulint max_query_len); /* in: max query length to print, or 0 to + use the default max length */ + +/** Type of data dictionary operation */ +enum trx_dict_op { + /** The transaction is not modifying the data dictionary. */ + TRX_DICT_OP_NONE = 0, + /** The transaction is creating a table or an index, or + dropping a table. The table must be dropped in crash + recovery. This and TRX_DICT_OP_NONE are the only possible + operation modes in crash recovery. */ + TRX_DICT_OP_TABLE = 1, + /** The transaction is creating or dropping an index in an + existing table. In crash recovery, the the data dictionary + must be locked, but the table must not be dropped. */ + TRX_DICT_OP_INDEX = 2 +}; + +/************************************************************************** +Determine if a transaction is a dictionary operation. */ +UNIV_INLINE +enum trx_dict_op +trx_get_dict_operation( +/*===================*/ + /* out: dictionary operation mode */ + const trx_t* trx) /* in: transaction */ + __attribute__((pure)); +/************************************************************************** +Flag a transaction a dictionary operation. */ +UNIV_INLINE +void +trx_set_dict_operation( +/*===================*/ + trx_t* trx, /* in/out: transaction */ + enum trx_dict_op op); /* in: operation, not + TRX_DICT_OP_NONE */ + +#ifndef UNIV_HOTBACKUP +/************************************************************************** +Determines if the currently running transaction has been interrupted. */ +UNIV_INTERN +ibool +trx_is_interrupted( +/*===============*/ + /* out: TRUE if interrupted */ + trx_t* trx); /* in: transaction */ +#else /* !UNIV_HOTBACKUP */ +#define trx_is_interrupted(trx) FALSE +#endif /* !UNIV_HOTBACKUP */ + +/*********************************************************************** +Calculates the "weight" of a transaction. The weight of one transaction +is estimated as the number of altered rows + the number of locked rows. +*/ + +#define TRX_WEIGHT(t) \ + ut_dulint_add((t)->undo_no, UT_LIST_GET_LEN((t)->trx_locks)) + +/*********************************************************************** +Compares the "weight" (or size) of two transactions. Transactions that +have edited non-transactional tables are considered heavier than ones +that have not. */ +UNIV_INTERN +int +trx_weight_cmp( +/*===========*/ + /* out: <0, 0 or >0; similar to strcmp(3) */ + const trx_t* a, /* in: the first transaction to be compared */ + const trx_t* b); /* in: the second transaction to be compared */ + +/*********************************************************************** +Retrieves transacion's id, represented as unsigned long long. */ +UNIV_INLINE +ullint +trx_get_id( +/*=======*/ + /* out: transaction's id */ + const trx_t* trx); /* in: transaction */ + +/* Maximum length of a string that can be returned by +trx_get_que_state_str(). */ +#define TRX_QUE_STATE_STR_MAX_LEN 12 /* "ROLLING BACK" */ + +/*********************************************************************** +Retrieves transaction's que state in a human readable string. The string +should not be free()'d or modified. */ +UNIV_INLINE +const char* +trx_get_que_state_str( +/*==================*/ + /* out: string in the data segment */ + const trx_t* trx); /* in: transaction */ + +/* Signal to a transaction */ +struct trx_sig_struct{ + unsigned type:3; /* signal type */ + unsigned sender:1; /* TRX_SIG_SELF or + TRX_SIG_OTHER_SESS */ + que_thr_t* receiver; /* non-NULL if the sender of the signal + wants reply after the operation induced + by the signal is completed */ + trx_savept_t savept; /* possible rollback savepoint */ + UT_LIST_NODE_T(trx_sig_t) + signals; /* queue of pending signals to the + transaction */ + UT_LIST_NODE_T(trx_sig_t) + reply_signals; /* list of signals for which the sender + transaction is waiting a reply */ +}; + +#define TRX_MAGIC_N 91118598 + +/* The transaction handle; every session has a trx object which is freed only +when the session is freed; in addition there may be session-less transactions +rolling back after a database recovery */ + +struct trx_struct{ + ulint magic_n; + /* All the next fields are protected by the kernel mutex, except the + undo logs which are protected by undo_mutex */ + const char* op_info; /* English text describing the + current operation, or an empty + string */ + unsigned is_purge:1; /* 0=user transaction, 1=purge */ + unsigned is_recovered:1; /* 0=normal transaction, + 1=recovered, must be rolled back */ + unsigned conc_state:2; /* state of the trx from the point + of view of concurrency control: + TRX_ACTIVE, TRX_COMMITTED_IN_MEMORY, + ... */ + unsigned que_state:2; /* valid when conc_state == TRX_ACTIVE: + TRX_QUE_RUNNING, TRX_QUE_LOCK_WAIT, + ... */ + unsigned isolation_level:2;/* TRX_ISO_REPEATABLE_READ, ... */ + unsigned check_foreigns:1;/* normally TRUE, but if the user + wants to suppress foreign key checks, + (in table imports, for example) we + set this FALSE */ + unsigned check_unique_secondary:1; + /* normally TRUE, but if the user + wants to speed up inserts by + suppressing unique key checks + for secondary indexes when we decide + if we can use the insert buffer for + them, we set this FALSE */ + unsigned support_xa:1; /* normally we do the XA two-phase + commit steps, but by setting this to + FALSE, one can save CPU time and about + 150 bytes in the undo log size as then + we skip XA steps */ + unsigned flush_log_later:1;/* when we commit the transaction + in MySQL's binlog write, we will + flush the log to disk later in + a separate call */ + unsigned must_flush_log_later:1;/* this flag is set to TRUE in + trx_commit_off_kernel() if + flush_log_later was TRUE, and there + were modifications by the transaction; + in that case we must flush the log + in trx_commit_complete_for_mysql() */ + unsigned dict_operation:2;/**< @see enum trx_dict_op */ + unsigned duplicates:2; /* TRX_DUP_IGNORE | TRX_DUP_REPLACE */ + unsigned active_trans:2; /* 1 - if a transaction in MySQL + is active. 2 - if prepare_commit_mutex + was taken */ + unsigned has_search_latch:1; + /* TRUE if this trx has latched the + search system latch in S-mode */ + unsigned declared_to_be_inside_innodb:1; + /* this is TRUE if we have declared + this transaction in + srv_conc_enter_innodb to be inside the + InnoDB engine */ + unsigned handling_signals:1;/* this is TRUE as long as the trx + is handling signals */ + unsigned dict_operation_lock_mode:2; + /* 0, RW_S_LATCH, or RW_X_LATCH: + the latch mode trx currently holds + on dict_operation_lock */ + time_t start_time; /* time the trx object was created + or the state last time became + TRX_ACTIVE */ + dulint id; /* transaction id */ + XID xid; /* X/Open XA transaction + identification to identify a + transaction branch */ + dulint no; /* transaction serialization number == + max trx id when the transaction is + moved to COMMITTED_IN_MEMORY state */ + ib_uint64_t commit_lsn; /* lsn at the time of the commit */ + dulint table_id; /* Table to drop iff dict_operation + is TRUE, or ut_dulint_zero. */ + /*------------------------------*/ + void* mysql_thd; /* MySQL thread handle corresponding + to this trx, or NULL */ + char** mysql_query_str;/* pointer to the field in mysqld_thd + which contains the pointer to the + current SQL query string */ + const char* mysql_log_file_name; + /* if MySQL binlog is used, this field + contains a pointer to the latest file + name; this is NULL if binlog is not + used */ + ib_int64_t mysql_log_offset;/* if MySQL binlog is used, this field + contains the end offset of the binlog + entry */ + const char* mysql_master_log_file_name; + /* if the database server is a MySQL + replication slave, we have here the + master binlog name up to which + replication has processed; otherwise + this is a pointer to a null + character */ + ib_int64_t mysql_master_log_pos; + /* if the database server is a MySQL + replication slave, this is the + position in the log file up to which + replication has processed */ + const char* mysql_relay_log_file_name; + ib_int64_t mysql_relay_log_pos; + + os_thread_id_t mysql_thread_id;/* id of the MySQL thread associated + with this transaction object */ + ulint mysql_process_no;/* since in Linux, 'top' reports + process id's and not thread id's, we + store the process number too */ + /*------------------------------*/ + ulint n_mysql_tables_in_use; /* number of Innobase tables + used in the processing of the current + SQL statement in MySQL */ + ulint mysql_n_tables_locked; + /* how many tables the current SQL + statement uses, except those + in consistent read */ + ulint search_latch_timeout; + /* If we notice that someone is + waiting for our S-lock on the search + latch to be released, we wait in + row0sel.c for BTR_SEA_TIMEOUT new + searches until we try to keep + the search latch again over + calls from MySQL; this is intended + to reduce contention on the search + latch */ + /*------------------------------*/ + ulint n_tickets_to_enter_innodb; + /* this can be > 0 only when + declared_to_... is TRUE; when we come + to srv_conc_innodb_enter, if the value + here is > 0, we decrement this by 1 */ + /*------------------------------*/ + dict_index_t* new_rec_locks[2];/* these are normally NULL; if + srv_locks_unsafe_for_binlog is TRUE + or session is using READ COMMITTED + isolation level, + in a cursor search, if we set a new + record lock on an index, this is set + to point to the index; this is + used in releasing the locks under the + cursors if we are performing an UPDATE + and we determine after retrieving + the row that it does not need to be + locked; thus, these can be used to + implement a 'mini-rollback' that + releases the latest record locks */ + UT_LIST_NODE_T(trx_t) + trx_list; /* list of transactions */ + UT_LIST_NODE_T(trx_t) + mysql_trx_list; /* list of transactions created for + MySQL */ + /*------------------------------*/ + ulint error_state; /* 0 if no error, otherwise error + number; NOTE That ONLY the thread + doing the transaction is allowed to + set this field: this is NOT protected + by the kernel mutex */ + const dict_index_t*error_info; /* if the error number indicates a + duplicate key error, a pointer to + the problematic index is stored here */ + ulint error_key_num; /* if the index creation fails to a + duplicate key error, a mysql key + number of that index is stored here */ + sess_t* sess; /* session of the trx, NULL if none */ + que_t* graph; /* query currently run in the session, + or NULL if none; NOTE that the query + belongs to the session, and it can + survive over a transaction commit, if + it is a stored procedure with a COMMIT + WORK statement, for instance */ + ulint n_active_thrs; /* number of active query threads */ + que_t* graph_before_signal_handling; + /* value of graph when signal handling + for this trx started: this is used to + return control to the original query + graph for error processing */ + trx_sig_t sig; /* one signal object can be allocated + in this space, avoiding mem_alloc */ + UT_LIST_BASE_NODE_T(trx_sig_t) + signals; /* queue of processed or pending + signals to the trx */ + UT_LIST_BASE_NODE_T(trx_sig_t) + reply_signals; /* list of signals sent by the query + threads of this trx for which a thread + is waiting for a reply; if this trx is + killed, the reply requests in the list + must be canceled */ + /*------------------------------*/ + lock_t* wait_lock; /* if trx execution state is + TRX_QUE_LOCK_WAIT, this points to + the lock request, otherwise this is + NULL */ + ibool was_chosen_as_deadlock_victim; + /* when the transaction decides to wait + for a lock, it sets this to FALSE; + if another transaction chooses this + transaction as a victim in deadlock + resolution, it sets this to TRUE */ + time_t wait_started; /* lock wait started at this time */ + UT_LIST_BASE_NODE_T(que_thr_t) + wait_thrs; /* query threads belonging to this + trx that are in the QUE_THR_LOCK_WAIT + state */ + ulint deadlock_mark; /* a mark field used in deadlock + checking algorithm. This must be + in its own machine word, because + it can be changed by other + threads while holding kernel_mutex. */ + /*------------------------------*/ + mem_heap_t* lock_heap; /* memory heap for the locks of the + transaction */ + UT_LIST_BASE_NODE_T(lock_t) + trx_locks; /* locks reserved by the transaction */ + /*------------------------------*/ + mem_heap_t* global_read_view_heap; + /* memory heap for the global read + view */ + read_view_t* global_read_view; + /* consistent read view associated + to a transaction or NULL */ + read_view_t* read_view; /* consistent read view used in the + transaction or NULL, this read view + if defined can be normal read view + associated to a transaction (i.e. + same as global_read_view) or read view + associated to a cursor */ + /*------------------------------*/ + UT_LIST_BASE_NODE_T(trx_named_savept_t) + trx_savepoints; /* savepoints set with SAVEPOINT ..., + oldest first */ + /*------------------------------*/ + mutex_t undo_mutex; /* mutex protecting the fields in this + section (down to undo_no_arr), EXCEPT + last_sql_stat_start, which can be + accessed only when we know that there + cannot be any activity in the undo + logs! */ + dulint undo_no; /* next undo log record number to + assign; since the undo log is + private for a transaction, this + is a simple ascending sequence + with no gaps; thus it represents + the number of modified/inserted + rows in a transaction */ + trx_savept_t last_sql_stat_start; + /* undo_no when the last sql statement + was started: in case of an error, trx + is rolled back down to this undo + number; see note at undo_mutex! */ + trx_rseg_t* rseg; /* rollback segment assigned to the + transaction, or NULL if not assigned + yet */ + trx_undo_t* insert_undo; /* pointer to the insert undo log, or + NULL if no inserts performed yet */ + trx_undo_t* update_undo; /* pointer to the update undo log, or + NULL if no update performed yet */ + dulint roll_limit; /* least undo number to undo during + a rollback */ + ulint pages_undone; /* number of undo log pages undone + since the last undo log truncation */ + trx_undo_arr_t* undo_no_arr; /* array of undo numbers of undo log + records which are currently processed + by a rollback operation */ + /*------------------------------*/ + ulint n_autoinc_rows; /* no. of AUTO-INC rows required for + an SQL statement. This is useful for + multi-row INSERTs */ + ib_vector_t* autoinc_locks; /* AUTOINC locks held by this + transaction. Note that these are + also in the lock list trx_locks. This + vector needs to be freed explicitly + when the trx_t instance is desrtoyed */ + /*------------------------------*/ + char detailed_error[256]; /* detailed error message for last + error, or empty. */ +}; + +#define TRX_MAX_N_THREADS 32 /* maximum number of + concurrent threads running a + single operation of a + transaction, e.g., a parallel + query */ +/* Transaction concurrency states (trx->conc_state) */ +#define TRX_NOT_STARTED 0 +#define TRX_ACTIVE 1 +#define TRX_COMMITTED_IN_MEMORY 2 +#define TRX_PREPARED 3 /* Support for 2PC/XA */ + +/* Transaction execution states when trx->conc_state == TRX_ACTIVE */ +#define TRX_QUE_RUNNING 0 /* transaction is running */ +#define TRX_QUE_LOCK_WAIT 1 /* transaction is waiting for a lock */ +#define TRX_QUE_ROLLING_BACK 2 /* transaction is rolling back */ +#define TRX_QUE_COMMITTING 3 /* transaction is committing */ + +/* Transaction isolation levels (trx->isolation_level) */ +#define TRX_ISO_READ_UNCOMMITTED 0 /* dirty read: non-locking + SELECTs are performed so that + we do not look at a possible + earlier version of a record; + thus they are not 'consistent' + reads under this isolation + level; otherwise like level + 2 */ + +#define TRX_ISO_READ_COMMITTED 1 /* somewhat Oracle-like + isolation, except that in + range UPDATE and DELETE we + must block phantom rows + with next-key locks; + SELECT ... FOR UPDATE and ... + LOCK IN SHARE MODE only lock + the index records, NOT the + gaps before them, and thus + allow free inserting; + each consistent read reads its + own snapshot */ + +#define TRX_ISO_REPEATABLE_READ 2 /* this is the default; + all consistent reads in the + same trx read the same + snapshot; + full next-key locking used + in locking reads to block + insertions into gaps */ + +#define TRX_ISO_SERIALIZABLE 3 /* all plain SELECTs are + converted to LOCK IN SHARE + MODE reads */ + +/* Treatment of duplicate values (trx->duplicates; for example, in inserts). +Multiple flags can be combined with bitwise OR. */ +#define TRX_DUP_IGNORE 1 /* duplicate rows are to be updated */ +#define TRX_DUP_REPLACE 2 /* duplicate rows are to be replaced */ + + +/* Types of a trx signal */ +#define TRX_SIG_NO_SIGNAL 0 +#define TRX_SIG_TOTAL_ROLLBACK 1 +#define TRX_SIG_ROLLBACK_TO_SAVEPT 2 +#define TRX_SIG_COMMIT 3 +#define TRX_SIG_ERROR_OCCURRED 4 +#define TRX_SIG_BREAK_EXECUTION 5 + +/* Sender types of a signal */ +#define TRX_SIG_SELF 0 /* sent by the session itself, or + by an error occurring within this + session */ +#define TRX_SIG_OTHER_SESS 1 /* sent by another session (which + must hold rights to this) */ + +/* Commit command node in a query graph */ +struct commit_node_struct{ + que_common_t common; /* node type: QUE_NODE_COMMIT */ + ulint state; /* node execution state */ +}; + +/* Commit node states */ +#define COMMIT_NODE_SEND 1 +#define COMMIT_NODE_WAIT 2 + + +#ifndef UNIV_NONINL +#include "trx0trx.ic" +#endif + +#endif === added file 'storage/xtradb/include/trx0trx.ic' --- a/storage/xtradb/include/trx0trx.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/trx0trx.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,221 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +The transaction + +Created 3/26/1996 Heikki Tuuri +*******************************************************/ + +/***************************************************************** +Starts the transaction if it is not yet started. */ +UNIV_INLINE +void +trx_start_if_not_started( +/*=====================*/ + trx_t* trx) /* in: transaction */ +{ + ut_ad(trx->conc_state != TRX_COMMITTED_IN_MEMORY); + + if (trx->conc_state == TRX_NOT_STARTED) { + + trx_start(trx, ULINT_UNDEFINED); + } +} + +/***************************************************************** +Starts the transaction if it is not yet started. Assumes we have reserved +the kernel mutex! */ +UNIV_INLINE +void +trx_start_if_not_started_low( +/*=========================*/ + trx_t* trx) /* in: transaction */ +{ + ut_ad(trx->conc_state != TRX_COMMITTED_IN_MEMORY); + + if (trx->conc_state == TRX_NOT_STARTED) { + + trx_start_low(trx, ULINT_UNDEFINED); + } +} + +/***************************************************************** +Resets the new record lock info in a transaction struct. */ +UNIV_INLINE +void +trx_reset_new_rec_lock_info( +/*========================*/ + trx_t* trx) /* in: transaction struct */ +{ + trx->new_rec_locks[0] = NULL; + trx->new_rec_locks[1] = NULL; +} + +/***************************************************************** +Registers that we have set a new record lock on an index. We only have space +to store 2 indexes! If this is called to store more than 2 indexes after +trx_reset_new_rec_lock_info(), then this function does nothing. */ +UNIV_INLINE +void +trx_register_new_rec_lock( +/*======================*/ + trx_t* trx, /* in: transaction struct */ + dict_index_t* index) /* in: trx sets a new record lock on this + index */ +{ + if (trx->new_rec_locks[0] == NULL) { + trx->new_rec_locks[0] = index; + + return; + } + + if (trx->new_rec_locks[0] == index) { + + return; + } + + if (trx->new_rec_locks[1] != NULL) { + + return; + } + + trx->new_rec_locks[1] = index; +} + +/***************************************************************** +Checks if trx has set a new record lock on an index. */ +UNIV_INLINE +ibool +trx_new_rec_locks_contain( +/*======================*/ + /* out: TRUE if trx has set a new record lock + on index */ + trx_t* trx, /* in: transaction struct */ + dict_index_t* index) /* in: index */ +{ + return(trx->new_rec_locks[0] == index + || trx->new_rec_locks[1] == index); +} + +/******************************************************************** +Retrieves the error_info field from a trx. */ +UNIV_INLINE +const dict_index_t* +trx_get_error_info( +/*===============*/ + /* out: the error info */ + const trx_t* trx) /* in: trx object */ +{ + return(trx->error_info); +} + +/*********************************************************************** +Retrieves transacion's id, represented as unsigned long long. */ +UNIV_INLINE +ullint +trx_get_id( +/*=======*/ + /* out: transaction's id */ + const trx_t* trx) /* in: transaction */ +{ + return((ullint)ut_conv_dulint_to_longlong(trx->id)); +} + +/*********************************************************************** +Retrieves transaction's que state in a human readable string. The string +should not be free()'d or modified. */ +UNIV_INLINE +const char* +trx_get_que_state_str( +/*==================*/ + /* out: string in the data segment */ + const trx_t* trx) /* in: transaction */ +{ + /* be sure to adjust TRX_QUE_STATE_STR_MAX_LEN if you change this */ + switch (trx->que_state) { + case TRX_QUE_RUNNING: + return("RUNNING"); + case TRX_QUE_LOCK_WAIT: + return("LOCK WAIT"); + case TRX_QUE_ROLLING_BACK: + return("ROLLING BACK"); + case TRX_QUE_COMMITTING: + return("COMMITTING"); + default: + return("UNKNOWN"); + } +} + +/************************************************************************** +Determine if a transaction is a dictionary operation. */ +UNIV_INLINE +enum trx_dict_op +trx_get_dict_operation( +/*===================*/ + /* out: dictionary operation mode */ + const trx_t* trx) /* in: transaction */ +{ + enum trx_dict_op op = (enum trx_dict_op) trx->dict_operation; + +#ifdef UNIV_DEBUG + switch (op) { + case TRX_DICT_OP_NONE: + case TRX_DICT_OP_TABLE: + case TRX_DICT_OP_INDEX: + return(op); + } + ut_error; +#endif /* UNIV_DEBUG */ + return((enum trx_dict_op) UNIV_EXPECT(op, TRX_DICT_OP_NONE)); +} +/************************************************************************** +Flag a transaction a dictionary operation. */ +UNIV_INLINE +void +trx_set_dict_operation( +/*===================*/ + trx_t* trx, /* in/out: transaction */ + enum trx_dict_op op) /* in: operation, not + TRX_DICT_OP_NONE */ +{ +#ifdef UNIV_DEBUG + enum trx_dict_op old_op = trx_get_dict_operation(trx); + + switch (op) { + case TRX_DICT_OP_NONE: + ut_error; + break; + case TRX_DICT_OP_TABLE: + switch (old_op) { + case TRX_DICT_OP_NONE: + case TRX_DICT_OP_INDEX: + case TRX_DICT_OP_TABLE: + goto ok; + } + ut_error; + break; + case TRX_DICT_OP_INDEX: + ut_ad(old_op == TRX_DICT_OP_NONE); + break; + } +ok: +#endif /* UNIV_DEBUG */ + + trx->dict_operation = op; +} === added file 'storage/xtradb/include/trx0types.h' --- a/storage/xtradb/include/trx0types.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/trx0types.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,78 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Transaction system global type definitions + +Created 3/26/1996 Heikki Tuuri +*******************************************************/ + +#ifndef trx0types_h +#define trx0types_h + +#include "ut0byte.h" + +/* prepare trx_t::id for being printed via printf(3) */ +#define TRX_ID_PREP_PRINTF(id) (ullint) ut_conv_dulint_to_longlong(id) + +/* printf(3) format used for printing TRX_ID_PRINTF_PREP() */ +#define TRX_ID_FMT "%llX" + +/* maximum length that a formatted trx_t::id could take, not including +the terminating '\0'. */ +#define TRX_ID_MAX_LEN 17 + +/* Memory objects */ +typedef struct trx_struct trx_t; +typedef struct trx_sys_struct trx_sys_t; +typedef struct trx_doublewrite_struct trx_doublewrite_t; +typedef struct trx_sig_struct trx_sig_t; +typedef struct trx_rseg_struct trx_rseg_t; +typedef struct trx_undo_struct trx_undo_t; +typedef struct trx_undo_arr_struct trx_undo_arr_t; +typedef struct trx_undo_inf_struct trx_undo_inf_t; +typedef struct trx_purge_struct trx_purge_t; +typedef struct roll_node_struct roll_node_t; +typedef struct commit_node_struct commit_node_t; +typedef struct trx_named_savept_struct trx_named_savept_t; + +/* Rollback contexts */ +enum trx_rb_ctx { + RB_NONE = 0, /* no rollback */ + RB_NORMAL, /* normal rollback */ + RB_RECOVERY, /* rolling back an incomplete transaction, + in crash recovery */ +}; + +/* Transaction savepoint */ +typedef struct trx_savept_struct trx_savept_t; +struct trx_savept_struct{ + dulint least_undo_no; /* least undo number to undo */ +}; + +/* File objects */ +typedef byte trx_sysf_t; +typedef byte trx_rsegf_t; +typedef byte trx_usegf_t; +typedef byte trx_ulogf_t; +typedef byte trx_upagef_t; + +/* Undo log record */ +typedef byte trx_undo_rec_t; + +#endif === added file 'storage/xtradb/include/trx0undo.h' --- a/storage/xtradb/include/trx0undo.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/trx0undo.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,526 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Transaction undo log + +Created 3/26/1996 Heikki Tuuri +*******************************************************/ + +#ifndef trx0undo_h +#define trx0undo_h + +#include "univ.i" +#include "trx0types.h" +#include "mtr0mtr.h" +#include "trx0sys.h" +#include "page0types.h" +#include "trx0xa.h" + +/*************************************************************************** +Builds a roll pointer dulint. */ +UNIV_INLINE +dulint +trx_undo_build_roll_ptr( +/*====================*/ + /* out: roll pointer */ + ibool is_insert, /* in: TRUE if insert undo log */ + ulint rseg_id, /* in: rollback segment id */ + ulint page_no, /* in: page number */ + ulint offset); /* in: offset of the undo entry within page */ +/*************************************************************************** +Decodes a roll pointer dulint. */ +UNIV_INLINE +void +trx_undo_decode_roll_ptr( +/*=====================*/ + dulint roll_ptr, /* in: roll pointer */ + ibool* is_insert, /* out: TRUE if insert undo log */ + ulint* rseg_id, /* out: rollback segment id */ + ulint* page_no, /* out: page number */ + ulint* offset); /* out: offset of the undo entry within page */ +/*************************************************************************** +Returns TRUE if the roll pointer is of the insert type. */ +UNIV_INLINE +ibool +trx_undo_roll_ptr_is_insert( +/*========================*/ + /* out: TRUE if insert undo log */ + dulint roll_ptr); /* in: roll pointer */ +/********************************************************************* +Writes a roll ptr to an index page. In case that the size changes in +some future version, this function should be used instead of +mach_write_... */ +UNIV_INLINE +void +trx_write_roll_ptr( +/*===============*/ + byte* ptr, /* in: pointer to memory where written */ + dulint roll_ptr); /* in: roll ptr */ +/********************************************************************* +Reads a roll ptr from an index page. In case that the roll ptr size +changes in some future version, this function should be used instead of +mach_read_... */ +UNIV_INLINE +dulint +trx_read_roll_ptr( +/*==============*/ + /* out: roll ptr */ + const byte* ptr); /* in: pointer to memory from where to read */ +/********************************************************************** +Gets an undo log page and x-latches it. */ +UNIV_INLINE +page_t* +trx_undo_page_get( +/*==============*/ + /* out: pointer to page x-latched */ + ulint space, /* in: space where placed */ + ulint zip_size, /* in: compressed page size in bytes + or 0 for uncompressed pages */ + ulint page_no, /* in: page number */ + mtr_t* mtr); /* in: mtr */ +/********************************************************************** +Gets an undo log page and s-latches it. */ +UNIV_INLINE +page_t* +trx_undo_page_get_s_latched( +/*========================*/ + /* out: pointer to page s-latched */ + ulint space, /* in: space where placed */ + ulint zip_size, /* in: compressed page size in bytes + or 0 for uncompressed pages */ + ulint page_no, /* in: page number */ + mtr_t* mtr); /* in: mtr */ +/********************************************************************** +Returns the previous undo record on the page in the specified log, or +NULL if none exists. */ +UNIV_INLINE +trx_undo_rec_t* +trx_undo_page_get_prev_rec( +/*=======================*/ + /* out: pointer to record, NULL if none */ + trx_undo_rec_t* rec, /* in: undo log record */ + ulint page_no,/* in: undo log header page number */ + ulint offset);/* in: undo log header offset on page */ +/********************************************************************** +Returns the next undo log record on the page in the specified log, or +NULL if none exists. */ +UNIV_INLINE +trx_undo_rec_t* +trx_undo_page_get_next_rec( +/*=======================*/ + /* out: pointer to record, NULL if none */ + trx_undo_rec_t* rec, /* in: undo log record */ + ulint page_no,/* in: undo log header page number */ + ulint offset);/* in: undo log header offset on page */ +/********************************************************************** +Returns the last undo record on the page in the specified undo log, or +NULL if none exists. */ +UNIV_INLINE +trx_undo_rec_t* +trx_undo_page_get_last_rec( +/*=======================*/ + /* out: pointer to record, NULL if none */ + page_t* undo_page,/* in: undo log page */ + ulint page_no,/* in: undo log header page number */ + ulint offset); /* in: undo log header offset on page */ +/********************************************************************** +Returns the first undo record on the page in the specified undo log, or +NULL if none exists. */ +UNIV_INLINE +trx_undo_rec_t* +trx_undo_page_get_first_rec( +/*========================*/ + /* out: pointer to record, NULL if none */ + page_t* undo_page,/* in: undo log page */ + ulint page_no,/* in: undo log header page number */ + ulint offset);/* in: undo log header offset on page */ +/*************************************************************************** +Gets the previous record in an undo log. */ +UNIV_INTERN +trx_undo_rec_t* +trx_undo_get_prev_rec( +/*==================*/ + /* out: undo log record, the page s-latched, + NULL if none */ + trx_undo_rec_t* rec, /* in: undo record */ + ulint page_no,/* in: undo log header page number */ + ulint offset, /* in: undo log header offset on page */ + mtr_t* mtr); /* in: mtr */ +/*************************************************************************** +Gets the next record in an undo log. */ +UNIV_INTERN +trx_undo_rec_t* +trx_undo_get_next_rec( +/*==================*/ + /* out: undo log record, the page s-latched, + NULL if none */ + trx_undo_rec_t* rec, /* in: undo record */ + ulint page_no,/* in: undo log header page number */ + ulint offset, /* in: undo log header offset on page */ + mtr_t* mtr); /* in: mtr */ +/*************************************************************************** +Gets the first record in an undo log. */ +UNIV_INTERN +trx_undo_rec_t* +trx_undo_get_first_rec( +/*===================*/ + /* out: undo log record, the page latched, NULL if + none */ + ulint space, /* in: undo log header space */ + ulint zip_size,/* in: compressed page size in bytes + or 0 for uncompressed pages */ + ulint page_no,/* in: undo log header page number */ + ulint offset, /* in: undo log header offset on page */ + ulint mode, /* in: latching mode: RW_S_LATCH or RW_X_LATCH */ + mtr_t* mtr); /* in: mtr */ +/************************************************************************ +Tries to add a page to the undo log segment where the undo log is placed. */ +UNIV_INTERN +ulint +trx_undo_add_page( +/*==============*/ + /* out: page number if success, else + FIL_NULL */ + trx_t* trx, /* in: transaction */ + trx_undo_t* undo, /* in: undo log memory object */ + mtr_t* mtr); /* in: mtr which does not have a latch to any + undo log page; the caller must have reserved + the rollback segment mutex */ +/*************************************************************************** +Truncates an undo log from the end. This function is used during a rollback +to free space from an undo log. */ +UNIV_INTERN +void +trx_undo_truncate_end( +/*==================*/ + trx_t* trx, /* in: transaction whose undo log it is */ + trx_undo_t* undo, /* in: undo log */ + dulint limit); /* in: all undo records with undo number + >= this value should be truncated */ +/*************************************************************************** +Truncates an undo log from the start. This function is used during a purge +operation. */ +UNIV_INTERN +void +trx_undo_truncate_start( +/*====================*/ + trx_rseg_t* rseg, /* in: rollback segment */ + ulint space, /* in: space id of the log */ + ulint hdr_page_no, /* in: header page number */ + ulint hdr_offset, /* in: header offset on the page */ + dulint limit); /* in: all undo pages with undo numbers < + this value should be truncated; NOTE that + the function only frees whole pages; the + header page is not freed, but emptied, if + all the records there are < limit */ +/************************************************************************ +Initializes the undo log lists for a rollback segment memory copy. +This function is only called when the database is started or a new +rollback segment created. */ +UNIV_INTERN +ulint +trx_undo_lists_init( +/*================*/ + /* out: the combined size of undo log segments + in pages */ + trx_rseg_t* rseg); /* in: rollback segment memory object */ +/************************************************************************** +Assigns an undo log for a transaction. A new undo log is created or a cached +undo log reused. */ +UNIV_INTERN +ulint +trx_undo_assign_undo( +/*=================*/ + /* out: DB_SUCCESS if undo log assign + successful, possible error codes are: + DB_TOO_MANY_CONCURRENT_TRXS + DB_OUT_OF_FILE_SPACE DB_OUT_OF_MEMORY*/ + trx_t* trx, /* in: transaction */ + ulint type); /* in: TRX_UNDO_INSERT or TRX_UNDO_UPDATE */ +/********************************************************************** +Sets the state of the undo log segment at a transaction finish. */ +UNIV_INTERN +page_t* +trx_undo_set_state_at_finish( +/*=========================*/ + /* out: undo log segment header page, + x-latched */ + trx_rseg_t* rseg, /* in: rollback segment memory object */ + trx_t* trx, /* in: transaction */ + trx_undo_t* undo, /* in: undo log memory copy */ + mtr_t* mtr); /* in: mtr */ +/********************************************************************** +Sets the state of the undo log segment at a transaction prepare. */ +UNIV_INTERN +page_t* +trx_undo_set_state_at_prepare( +/*==========================*/ + /* out: undo log segment header page, + x-latched */ + trx_t* trx, /* in: transaction */ + trx_undo_t* undo, /* in: undo log memory copy */ + mtr_t* mtr); /* in: mtr */ + +/************************************************************************** +Adds the update undo log header as the first in the history list, and +frees the memory object, or puts it to the list of cached update undo log +segments. */ +UNIV_INTERN +void +trx_undo_update_cleanup( +/*====================*/ + trx_t* trx, /* in: trx owning the update undo log */ + page_t* undo_page, /* in: update undo log header page, + x-latched */ + mtr_t* mtr); /* in: mtr */ +/********************************************************************** +Frees or caches an insert undo log after a transaction commit or rollback. +Knowledge of inserts is not needed after a commit or rollback, therefore +the data can be discarded. */ +UNIV_INTERN +void +trx_undo_insert_cleanup( +/*====================*/ + trx_t* trx); /* in: transaction handle */ +/*************************************************************** +Parses the redo log entry of an undo log page initialization. */ +UNIV_INTERN +byte* +trx_undo_parse_page_init( +/*=====================*/ + /* out: end of log record or NULL */ + byte* ptr, /* in: buffer */ + byte* end_ptr,/* in: buffer end */ + page_t* page, /* in: page or NULL */ + mtr_t* mtr); /* in: mtr or NULL */ +/*************************************************************** +Parses the redo log entry of an undo log page header create or reuse. */ +UNIV_INTERN +byte* +trx_undo_parse_page_header( +/*=======================*/ + /* out: end of log record or NULL */ + ulint type, /* in: MLOG_UNDO_HDR_CREATE or MLOG_UNDO_HDR_REUSE */ + byte* ptr, /* in: buffer */ + byte* end_ptr,/* in: buffer end */ + page_t* page, /* in: page or NULL */ + mtr_t* mtr); /* in: mtr or NULL */ +/*************************************************************** +Parses the redo log entry of an undo log page header discard. */ +UNIV_INTERN +byte* +trx_undo_parse_discard_latest( +/*==========================*/ + /* out: end of log record or NULL */ + byte* ptr, /* in: buffer */ + byte* end_ptr,/* in: buffer end */ + page_t* page, /* in: page or NULL */ + mtr_t* mtr); /* in: mtr or NULL */ + +/* Types of an undo log segment */ +#define TRX_UNDO_INSERT 1 /* contains undo entries for inserts */ +#define TRX_UNDO_UPDATE 2 /* contains undo entries for updates + and delete markings: in short, + modifys (the name 'UPDATE' is a + historical relic) */ +/* States of an undo log segment */ +#define TRX_UNDO_ACTIVE 1 /* contains an undo log of an active + transaction */ +#define TRX_UNDO_CACHED 2 /* cached for quick reuse */ +#define TRX_UNDO_TO_FREE 3 /* insert undo segment can be freed */ +#define TRX_UNDO_TO_PURGE 4 /* update undo segment will not be + reused: it can be freed in purge when + all undo data in it is removed */ +#define TRX_UNDO_PREPARED 5 /* contains an undo log of an + prepared transaction */ + +/* Transaction undo log memory object; this is protected by the undo_mutex +in the corresponding transaction object */ + +struct trx_undo_struct{ + /*-----------------------------*/ + ulint id; /* undo log slot number within the + rollback segment */ + ulint type; /* TRX_UNDO_INSERT or + TRX_UNDO_UPDATE */ + ulint state; /* state of the corresponding undo log + segment */ + ibool del_marks; /* relevant only in an update undo log: + this is TRUE if the transaction may + have delete marked records, because of + a delete of a row or an update of an + indexed field; purge is then + necessary; also TRUE if the transaction + has updated an externally stored + field */ + dulint trx_id; /* id of the trx assigned to the undo + log */ + XID xid; /* X/Open XA transaction + identification */ + ibool dict_operation; /* TRUE if a dict operation trx */ + dulint table_id; /* if a dict operation, then the table + id */ + trx_rseg_t* rseg; /* rseg where the undo log belongs */ + /*-----------------------------*/ + ulint space; /* space id where the undo log + placed */ + ulint zip_size; /* in: compressed page size of space + in bytes, or 0 for uncompressed */ + ulint hdr_page_no; /* page number of the header page in + the undo log */ + ulint hdr_offset; /* header offset of the undo log on the + page */ + ulint last_page_no; /* page number of the last page in the + undo log; this may differ from + top_page_no during a rollback */ + ulint size; /* current size in pages */ + /*-----------------------------*/ + ulint empty; /* TRUE if the stack of undo log + records is currently empty */ + ulint top_page_no; /* page number where the latest undo + log record was catenated; during + rollback the page from which the latest + undo record was chosen */ + ulint top_offset; /* offset of the latest undo record, + i.e., the topmost element in the undo + log if we think of it as a stack */ + dulint top_undo_no; /* undo number of the latest record */ + buf_block_t* guess_block; /* guess for the buffer block where + the top page might reside */ + /*-----------------------------*/ + UT_LIST_NODE_T(trx_undo_t) undo_list; + /* undo log objects in the rollback + segment are chained into lists */ +}; + +/* The offset of the undo log page header on pages of the undo log */ +#define TRX_UNDO_PAGE_HDR FSEG_PAGE_DATA +/*-------------------------------------------------------------*/ +/* Transaction undo log page header offsets */ +#define TRX_UNDO_PAGE_TYPE 0 /* TRX_UNDO_INSERT or + TRX_UNDO_UPDATE */ +#define TRX_UNDO_PAGE_START 2 /* Byte offset where the undo log + records for the LATEST transaction + start on this page (remember that + in an update undo log, the first page + can contain several undo logs) */ +#define TRX_UNDO_PAGE_FREE 4 /* On each page of the undo log this + field contains the byte offset of the + first free byte on the page */ +#define TRX_UNDO_PAGE_NODE 6 /* The file list node in the chain + of undo log pages */ +/*-------------------------------------------------------------*/ +#define TRX_UNDO_PAGE_HDR_SIZE (6 + FLST_NODE_SIZE) + +/* An update undo segment with just one page can be reused if it has +< this number bytes used; we must leave space at least for one new undo +log header on the page */ + +#define TRX_UNDO_PAGE_REUSE_LIMIT (3 * UNIV_PAGE_SIZE / 4) + +/* An update undo log segment may contain several undo logs on its first page +if the undo logs took so little space that the segment could be cached and +reused. All the undo log headers are then on the first page, and the last one +owns the undo log records on subsequent pages if the segment is bigger than +one page. If an undo log is stored in a segment, then on the first page it is +allowed to have zero undo records, but if the segment extends to several +pages, then all the rest of the pages must contain at least one undo log +record. */ + +/* The offset of the undo log segment header on the first page of the undo +log segment */ + +#define TRX_UNDO_SEG_HDR (TRX_UNDO_PAGE_HDR + TRX_UNDO_PAGE_HDR_SIZE) +/*-------------------------------------------------------------*/ +#define TRX_UNDO_STATE 0 /* TRX_UNDO_ACTIVE, ... */ +#define TRX_UNDO_LAST_LOG 2 /* Offset of the last undo log header + on the segment header page, 0 if + none */ +#define TRX_UNDO_FSEG_HEADER 4 /* Header for the file segment which + the undo log segment occupies */ +#define TRX_UNDO_PAGE_LIST (4 + FSEG_HEADER_SIZE) + /* Base node for the list of pages in + the undo log segment; defined only on + the undo log segment's first page */ +/*-------------------------------------------------------------*/ +/* Size of the undo log segment header */ +#define TRX_UNDO_SEG_HDR_SIZE (4 + FSEG_HEADER_SIZE + FLST_BASE_NODE_SIZE) + + +/* The undo log header. There can be several undo log headers on the first +page of an update undo log segment. */ +/*-------------------------------------------------------------*/ +#define TRX_UNDO_TRX_ID 0 /* Transaction id */ +#define TRX_UNDO_TRX_NO 8 /* Transaction number of the + transaction; defined only if the log + is in a history list */ +#define TRX_UNDO_DEL_MARKS 16 /* Defined only in an update undo + log: TRUE if the transaction may have + done delete markings of records, and + thus purge is necessary */ +#define TRX_UNDO_LOG_START 18 /* Offset of the first undo log record + of this log on the header page; purge + may remove undo log record from the + log start, and therefore this is not + necessarily the same as this log + header end offset */ +#define TRX_UNDO_XID_EXISTS 20 /* TRUE if undo log header includes + X/Open XA transaction identification + XID */ +#define TRX_UNDO_DICT_TRANS 21 /* TRUE if the transaction is a table + create, index create, or drop + transaction: in recovery + the transaction cannot be rolled back + in the usual way: a 'rollback' rather + means dropping the created or dropped + table, if it still exists */ +#define TRX_UNDO_TABLE_ID 22 /* Id of the table if the preceding + field is TRUE */ +#define TRX_UNDO_NEXT_LOG 30 /* Offset of the next undo log header + on this page, 0 if none */ +#define TRX_UNDO_PREV_LOG 32 /* Offset of the previous undo log + header on this page, 0 if none */ +#define TRX_UNDO_HISTORY_NODE 34 /* If the log is put to the history + list, the file list node is here */ +/*-------------------------------------------------------------*/ +#define TRX_UNDO_LOG_OLD_HDR_SIZE (34 + FLST_NODE_SIZE) + +/* Note: the writing of the undo log old header is coded by a log record +MLOG_UNDO_HDR_CREATE or MLOG_UNDO_HDR_REUSE. The appending of an XID to the +header is logged separately. In this sense, the XID is not really a member +of the undo log header. TODO: do not append the XID to the log header if XA +is not needed by the user. The XID wastes about 150 bytes of space in every +undo log. In the history list we may have millions of undo logs, which means +quite a large overhead. */ + +/* X/Open XA Transaction Identification (XID) */ + +#define TRX_UNDO_XA_FORMAT (TRX_UNDO_LOG_OLD_HDR_SIZE) +#define TRX_UNDO_XA_TRID_LEN (TRX_UNDO_XA_FORMAT + 4) +#define TRX_UNDO_XA_BQUAL_LEN (TRX_UNDO_XA_TRID_LEN + 4) +#define TRX_UNDO_XA_XID (TRX_UNDO_XA_BQUAL_LEN + 4) +/*--------------------------------------------------------------*/ +#define TRX_UNDO_LOG_XA_HDR_SIZE (TRX_UNDO_XA_XID + XIDDATASIZE) + /* Total size of the header with the XA XID */ + +#ifndef UNIV_NONINL +#include "trx0undo.ic" +#endif + +#endif === added file 'storage/xtradb/include/trx0undo.ic' --- a/storage/xtradb/include/trx0undo.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/trx0undo.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,344 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Transaction undo log + +Created 3/26/1996 Heikki Tuuri +*******************************************************/ + +#include "data0type.h" +#include "page0page.h" + +/*************************************************************************** +Builds a roll pointer dulint. */ +UNIV_INLINE +dulint +trx_undo_build_roll_ptr( +/*====================*/ + /* out: roll pointer */ + ibool is_insert, /* in: TRUE if insert undo log */ + ulint rseg_id, /* in: rollback segment id */ + ulint page_no, /* in: page number */ + ulint offset) /* in: offset of the undo entry within page */ +{ +#if DATA_ROLL_PTR_LEN != 7 +# error "DATA_ROLL_PTR_LEN != 7" +#endif + ut_ad(rseg_id < 128); + + return(ut_dulint_create(is_insert * 128 * 256 * 256 + + rseg_id * 256 * 256 + + (page_no / 256) / 256, + (page_no % (256 * 256)) * 256 * 256 + + offset)); +} + +/*************************************************************************** +Decodes a roll pointer dulint. */ +UNIV_INLINE +void +trx_undo_decode_roll_ptr( +/*=====================*/ + dulint roll_ptr, /* in: roll pointer */ + ibool* is_insert, /* out: TRUE if insert undo log */ + ulint* rseg_id, /* out: rollback segment id */ + ulint* page_no, /* out: page number */ + ulint* offset) /* out: offset of the undo entry within page */ +{ + ulint low; + ulint high; +#if DATA_ROLL_PTR_LEN != 7 +# error "DATA_ROLL_PTR_LEN != 7" +#endif +#if TRUE != 1 +# error "TRUE != 1" +#endif + high = ut_dulint_get_high(roll_ptr); + low = ut_dulint_get_low(roll_ptr); + + *offset = low % (256 * 256); + + *is_insert = high / (256 * 256 * 128); /* TRUE == 1 */ + *rseg_id = (high / (256 * 256)) % 128; + + *page_no = (high % (256 * 256)) * 256 * 256 + + (low / 256) / 256; +} + +/*************************************************************************** +Returns TRUE if the roll pointer is of the insert type. */ +UNIV_INLINE +ibool +trx_undo_roll_ptr_is_insert( +/*========================*/ + /* out: TRUE if insert undo log */ + dulint roll_ptr) /* in: roll pointer */ +{ + ulint high; +#if DATA_ROLL_PTR_LEN != 7 +# error "DATA_ROLL_PTR_LEN != 7" +#endif +#if TRUE != 1 +# error "TRUE != 1" +#endif + high = ut_dulint_get_high(roll_ptr); + + return(high / (256 * 256 * 128)); +} + +/********************************************************************* +Writes a roll ptr to an index page. In case that the size changes in +some future version, this function should be used instead of +mach_write_... */ +UNIV_INLINE +void +trx_write_roll_ptr( +/*===============*/ + byte* ptr, /* in: pointer to memory where written */ + dulint roll_ptr) /* in: roll ptr */ +{ +#if DATA_ROLL_PTR_LEN != 7 +# error "DATA_ROLL_PTR_LEN != 7" +#endif + mach_write_to_7(ptr, roll_ptr); +} + +/********************************************************************* +Reads a roll ptr from an index page. In case that the roll ptr size +changes in some future version, this function should be used instead of +mach_read_... */ +UNIV_INLINE +dulint +trx_read_roll_ptr( +/*==============*/ + /* out: roll ptr */ + const byte* ptr) /* in: pointer to memory from where to read */ +{ +#if DATA_ROLL_PTR_LEN != 7 +# error "DATA_ROLL_PTR_LEN != 7" +#endif + return(mach_read_from_7(ptr)); +} + +/********************************************************************** +Gets an undo log page and x-latches it. */ +UNIV_INLINE +page_t* +trx_undo_page_get( +/*==============*/ + /* out: pointer to page x-latched */ + ulint space, /* in: space where placed */ + ulint zip_size, /* in: compressed page size in bytes + or 0 for uncompressed pages */ + ulint page_no, /* in: page number */ + mtr_t* mtr) /* in: mtr */ +{ + buf_block_t* block = buf_page_get(space, zip_size, page_no, + RW_X_LATCH, mtr); + buf_block_dbg_add_level(block, SYNC_TRX_UNDO_PAGE); + + return(buf_block_get_frame(block)); +} + +/********************************************************************** +Gets an undo log page and s-latches it. */ +UNIV_INLINE +page_t* +trx_undo_page_get_s_latched( +/*========================*/ + /* out: pointer to page s-latched */ + ulint space, /* in: space where placed */ + ulint zip_size, /* in: compressed page size in bytes + or 0 for uncompressed pages */ + ulint page_no, /* in: page number */ + mtr_t* mtr) /* in: mtr */ +{ + buf_block_t* block = buf_page_get(space, zip_size, page_no, + RW_S_LATCH, mtr); + buf_block_dbg_add_level(block, SYNC_TRX_UNDO_PAGE); + + return(buf_block_get_frame(block)); +} + +/********************************************************************** +Returns the start offset of the undo log records of the specified undo +log on the page. */ +UNIV_INLINE +ulint +trx_undo_page_get_start( +/*====================*/ + /* out: start offset */ + page_t* undo_page,/* in: undo log page */ + ulint page_no,/* in: undo log header page number */ + ulint offset) /* in: undo log header offset on page */ +{ + ulint start; + + if (page_no == page_get_page_no(undo_page)) { + + start = mach_read_from_2(offset + undo_page + + TRX_UNDO_LOG_START); + } else { + start = TRX_UNDO_PAGE_HDR + TRX_UNDO_PAGE_HDR_SIZE; + } + + return(start); +} + +/********************************************************************** +Returns the end offset of the undo log records of the specified undo +log on the page. */ +UNIV_INLINE +ulint +trx_undo_page_get_end( +/*==================*/ + /* out: end offset */ + page_t* undo_page,/* in: undo log page */ + ulint page_no,/* in: undo log header page number */ + ulint offset) /* in: undo log header offset on page */ +{ + trx_ulogf_t* log_hdr; + ulint end; + + if (page_no == page_get_page_no(undo_page)) { + + log_hdr = undo_page + offset; + + end = mach_read_from_2(log_hdr + TRX_UNDO_NEXT_LOG); + + if (end == 0) { + end = mach_read_from_2(undo_page + TRX_UNDO_PAGE_HDR + + TRX_UNDO_PAGE_FREE); + } + } else { + end = mach_read_from_2(undo_page + TRX_UNDO_PAGE_HDR + + TRX_UNDO_PAGE_FREE); + } + + return(end); +} + +/********************************************************************** +Returns the previous undo record on the page in the specified log, or +NULL if none exists. */ +UNIV_INLINE +trx_undo_rec_t* +trx_undo_page_get_prev_rec( +/*=======================*/ + /* out: pointer to record, NULL if none */ + trx_undo_rec_t* rec, /* in: undo log record */ + ulint page_no,/* in: undo log header page number */ + ulint offset) /* in: undo log header offset on page */ +{ + page_t* undo_page; + ulint start; + + undo_page = (page_t*) ut_align_down(rec, UNIV_PAGE_SIZE); + + start = trx_undo_page_get_start(undo_page, page_no, offset); + + if (start + undo_page == rec) { + + return(NULL); + } + + return(undo_page + mach_read_from_2(rec - 2)); +} + +/********************************************************************** +Returns the next undo log record on the page in the specified log, or +NULL if none exists. */ +UNIV_INLINE +trx_undo_rec_t* +trx_undo_page_get_next_rec( +/*=======================*/ + /* out: pointer to record, NULL if none */ + trx_undo_rec_t* rec, /* in: undo log record */ + ulint page_no,/* in: undo log header page number */ + ulint offset) /* in: undo log header offset on page */ +{ + page_t* undo_page; + ulint end; + ulint next; + + undo_page = (page_t*) ut_align_down(rec, UNIV_PAGE_SIZE); + + end = trx_undo_page_get_end(undo_page, page_no, offset); + + next = mach_read_from_2(rec); + + if (next == end) { + + return(NULL); + } + + return(undo_page + next); +} + +/********************************************************************** +Returns the last undo record on the page in the specified undo log, or +NULL if none exists. */ +UNIV_INLINE +trx_undo_rec_t* +trx_undo_page_get_last_rec( +/*=======================*/ + /* out: pointer to record, NULL if none */ + page_t* undo_page,/* in: undo log page */ + ulint page_no,/* in: undo log header page number */ + ulint offset) /* in: undo log header offset on page */ +{ + ulint start; + ulint end; + + start = trx_undo_page_get_start(undo_page, page_no, offset); + end = trx_undo_page_get_end(undo_page, page_no, offset); + + if (start == end) { + + return(NULL); + } + + return(undo_page + mach_read_from_2(undo_page + end - 2)); +} + +/********************************************************************** +Returns the first undo record on the page in the specified undo log, or +NULL if none exists. */ +UNIV_INLINE +trx_undo_rec_t* +trx_undo_page_get_first_rec( +/*========================*/ + /* out: pointer to record, NULL if none */ + page_t* undo_page,/* in: undo log page */ + ulint page_no,/* in: undo log header page number */ + ulint offset) /* in: undo log header offset on page */ +{ + ulint start; + ulint end; + + start = trx_undo_page_get_start(undo_page, page_no, offset); + end = trx_undo_page_get_end(undo_page, page_no, offset); + + if (start == end) { + + return(NULL); + } + + return(undo_page + start); +} === added file 'storage/xtradb/include/trx0xa.h' --- a/storage/xtradb/include/trx0xa.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/trx0xa.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,61 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/* + * Start of xa.h header + * + * Define a symbol to prevent multiple inclusions of this header file + */ +#ifndef XA_H +#define XA_H + +/* + * Transaction branch identification: XID and NULLXID: + */ +#ifndef XIDDATASIZE + +#define XIDDATASIZE 128 /* size in bytes */ +#define MAXGTRIDSIZE 64 /* maximum size in bytes of gtrid */ +#define MAXBQUALSIZE 64 /* maximum size in bytes of bqual */ + +struct xid_t { + long formatID; /* format identifier; -1 + means that the XID is null */ + long gtrid_length; /* value from 1 through 64 */ + long bqual_length; /* value from 1 through 64 */ + char data[XIDDATASIZE]; +}; +typedef struct xid_t XID; +#endif +#define XA_OK 0 /* normal execution */ +#define XAER_ASYNC -2 /* asynchronous operation already + outstanding */ +#define XAER_RMERR -3 /* a resource manager error occurred in + the transaction branch */ +#define XAER_NOTA -4 /* the XID is not valid */ +#define XAER_INVAL -5 /* invalid arguments were given */ +#define XAER_PROTO -6 /* routine invoked in an improper + context */ +#define XAER_RMFAIL -7 /* resource manager unavailable */ +#define XAER_DUPID -8 /* the XID already exists */ +#define XAER_OUTSIDE -9 /* resource manager doing work outside + transaction */ +#endif /* ifndef XA_H */ +/* + * End of xa.h header + */ === added file 'storage/xtradb/include/univ.i' --- a/storage/xtradb/include/univ.i 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/univ.i 2009-06-11 12:53:26 +0000 @@ -0,0 +1,466 @@ +/***************************************************************************** + +Copyright (c) 1994, 2009, Innobase Oy. All Rights Reserved. +Copyright (c) 2008, Google Inc. + +Portions of this file contain modifications contributed and copyrighted by +Google, Inc. Those modifications are gratefully acknowledged and are described +briefly in the InnoDB documentation. The contributions by Google are +incorporated with their permission, and subject to the conditions contained in +the file COPYING.Google. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/*************************************************************************** +Version control for database, common definitions, and include files + +Created 1/20/1994 Heikki Tuuri +****************************************************************************/ + +#ifndef univ_i +#define univ_i + +#define INNODB_VERSION_MAJOR 1 +#define INNODB_VERSION_MINOR 0 +#define INNODB_VERSION_BUGFIX 3 +#define PERCONA_INNODB_VERSION 5a + +/* The following is the InnoDB version as shown in +SELECT plugin_version FROM information_schema.plugins; +calculated in in make_version_string() in sql/sql_show.cc like this: +"version >> 8" . "version & 0xff" +because the version is shown with only one dot, we skip the last +component, i.e. we show M.N.P as M.N */ +#define INNODB_VERSION_SHORT \ + (INNODB_VERSION_MAJOR << 8 | INNODB_VERSION_MINOR) + +/* auxiliary macros to help creating the version as string */ +#define __INNODB_VERSION(a, b, c, d) (#a "." #b "." #c "-" #d) +#define _INNODB_VERSION(a, b, c, d) __INNODB_VERSION(a, b, c, d) + +#define INNODB_VERSION_STR \ + _INNODB_VERSION(INNODB_VERSION_MAJOR, \ + INNODB_VERSION_MINOR, \ + INNODB_VERSION_BUGFIX, \ + PERCONA_INNODB_VERSION) + +#ifdef MYSQL_DYNAMIC_PLUGIN +/* In the dynamic plugin, redefine some externally visible symbols +in order not to conflict with the symbols of a builtin InnoDB. */ + +/* Rename all C++ classes that contain virtual functions, because we +have not figured out how to apply the visibility=hidden attribute to +the virtual method table (vtable) in GCC 3. */ +# define ha_innobase ha_innodb +#endif /* MYSQL_DYNAMIC_PLUGIN */ + +#if (defined(WIN32) || defined(_WIN32) || defined(WIN64) || defined(_WIN64)) && !defined(MYSQL_SERVER) && !defined(__WIN__) +# undef __WIN__ +# define __WIN__ + +# include <windows.h> + +# if !defined(WIN64) && !defined(_WIN64) +# define UNIV_CAN_USE_X86_ASSEMBLER +# endif + +# ifdef _NT_ +# define __NT__ +# endif + +#else +/* The defines used with MySQL */ + +/* Include two header files from MySQL to make the Unix flavor used +in compiling more Posix-compatible. These headers also define __WIN__ +if we are compiling on Windows. */ + +# include <my_global.h> +# include <my_pthread.h> + +/* Include <sys/stat.h> to get S_I... macros defined for os0file.c */ +# include <sys/stat.h> +# if !defined(__NETWARE__) && !defined(__WIN__) +# include <sys/mman.h> /* mmap() for os0proc.c */ +# endif + +# undef PACKAGE +# undef VERSION + +/* Include the header file generated by GNU autoconf */ +# ifndef __WIN__ +# include "config.h" +# endif + +# ifdef HAVE_SCHED_H +# include <sched.h> +# endif + +/* When compiling for Itanium IA64, undefine the flag below to prevent use +of the 32-bit x86 assembler in mutex operations. */ + +# if defined(__WIN__) && !defined(WIN64) && !defined(_WIN64) +# define UNIV_CAN_USE_X86_ASSEMBLER +# endif + +/* For InnoDB rw_locks to work with atomics we need the thread_id +to be no more than machine word wide. The following enables using +atomics for InnoDB rw_locks where these conditions are met. */ +#ifdef HAVE_GCC_ATOMIC_BUILTINS +/* if HAVE_ATOMIC_PTHREAD_T is defined at this point that means that +the code from plug.in has defined it and we do not need to include +ut0auxconf.h which would either define HAVE_ATOMIC_PTHREAD_T or will +be empty */ +# ifndef HAVE_ATOMIC_PTHREAD_T +# include "ut0auxconf.h" +# endif /* HAVE_ATOMIC_PTHREAD_T */ +/* now HAVE_ATOMIC_PTHREAD_T is eventually defined either by plug.in or +from Makefile.in->ut0auxconf.h */ +# ifdef HAVE_ATOMIC_PTHREAD_T +# define INNODB_RW_LOCKS_USE_ATOMICS +# endif /* HAVE_ATOMIC_PTHREAD_T */ +#endif /* HAVE_GCC_ATOMIC_BUILTINS */ + +/* We only try to do explicit inlining of functions with gcc and +Microsoft Visual C++ */ + +# if !defined(__GNUC__) +# undef UNIV_MUST_NOT_INLINE /* Remove compiler warning */ +# define UNIV_MUST_NOT_INLINE +# endif + +# ifdef HAVE_PREAD +# define HAVE_PWRITE +# endif + +#endif /* #if (defined(WIN32) || ... */ + +/* DEBUG VERSION CONTROL + ===================== */ + +/* The following flag will make InnoDB to initialize +all memory it allocates to zero. It hides Purify +warnings about reading unallocated memory unless +memory is read outside the allocated blocks. */ +/* +#define UNIV_INIT_MEM_TO_ZERO +*/ + +/* When this macro is defined then additional test functions will be +compiled. These functions live at the end of each relevant source file +and have "test_" prefix. These functions are not called from anywhere in +the code, they can be called from gdb after +innobase_start_or_create_for_mysql() has executed using the call +command. Not tested on Windows. */ +/* +#define UNIV_COMPILE_TEST_FUNCS +*/ + +#if 0 +#define UNIV_DEBUG_VALGRIND /* Enable extra + Valgrind instrumentation */ +#define UNIV_DEBUG_PRINT /* Enable the compilation of + some debug print functions */ +#define UNIV_AHI_DEBUG /* Enable adaptive hash index + debugging without UNIV_DEBUG */ +#define UNIV_BUF_DEBUG /* Enable buffer pool + debugging without UNIV_DEBUG */ +#define UNIV_DEBUG /* Enable ut_ad() assertions + and disable UNIV_INLINE */ +#define UNIV_DEBUG_FILE_ACCESSES /* Debug .ibd file access + (field file_page_was_freed + in buf_page_t) */ +#define UNIV_LRU_DEBUG /* debug the buffer pool LRU */ +#define UNIV_HASH_DEBUG /* debug HASH_ macros */ +#define UNIV_LIST_DEBUG /* debug UT_LIST_ macros */ +#define UNIV_MEM_DEBUG /* detect memory leaks etc */ +#define UNIV_IBUF_DEBUG /* debug the insert buffer */ +#define UNIV_IBUF_COUNT_DEBUG /* debug the insert buffer; +this limits the database to IBUF_COUNT_N_SPACES and IBUF_COUNT_N_PAGES, +and the insert buffer must be empty when the database is started */ +#define UNIV_SYNC_DEBUG /* debug mutex and latch +operations (very slow); also UNIV_DEBUG must be defined */ +#define UNIV_SEARCH_DEBUG /* debug B-tree comparisons */ +#define UNIV_SYNC_PERF_STAT /* operation counts for + rw-locks and mutexes */ +#define UNIV_SEARCH_PERF_STAT /* statistics for the + adaptive hash index */ +#define UNIV_SRV_PRINT_LATCH_WAITS /* enable diagnostic output + in sync0sync.c */ +#define UNIV_BTR_PRINT /* enable functions for + printing B-trees */ +#define UNIV_ZIP_DEBUG /* extensive consistency checks + for compressed pages */ +#define UNIV_ZIP_COPY /* call page_zip_copy_recs() + more often */ +#endif + +#define UNIV_BTR_DEBUG /* check B-tree links */ +#define UNIV_LIGHT_MEM_DEBUG /* light memory debugging */ + +#ifdef HAVE_valgrind +/* The following sets all new allocated memory to zero before use: +this can be used to eliminate unnecessary Purify warnings, but note that +it also masks many bugs Purify could detect. For detailed Purify analysis it +is best to remove the define below and look through the warnings one +by one. */ +#define UNIV_SET_MEM_TO_ZERO +#endif + +/* +#define UNIV_SQL_DEBUG +#define UNIV_LOG_DEBUG +*/ + /* the above option prevents forcing of log to disk + at a buffer page write: it should be tested with this + option off; also some ibuf tests are suppressed */ +/* +#define UNIV_BASIC_LOG_DEBUG +*/ + /* the above option enables basic recovery debugging: + new allocated file pages are reset */ + +/* Linkage specifier for non-static InnoDB symbols (variables and functions) +that are only referenced from within InnoDB, not from MySQL */ +#ifdef __WIN__ +# define UNIV_INTERN +#else +# define UNIV_INTERN __attribute__((visibility ("hidden"))) +#endif + +#if (!defined(UNIV_DEBUG) && !defined(UNIV_MUST_NOT_INLINE)) +/* Definition for inline version */ + +#ifdef __WIN__ +#define UNIV_INLINE __inline +#else +#define UNIV_INLINE static __inline__ +#endif + +#else +/* If we want to compile a noninlined version we use the following macro +definitions: */ + +#define UNIV_NONINL +#define UNIV_INLINE UNIV_INTERN + +#endif /* UNIV_DEBUG */ + +#ifdef _WIN32 +#define UNIV_WORD_SIZE 4 +#elif defined(_WIN64) +#define UNIV_WORD_SIZE 8 +#else +/* MySQL config.h generated by GNU autoconf will define SIZEOF_LONG in Posix */ +#define UNIV_WORD_SIZE SIZEOF_LONG +#endif + +/* The following alignment is used in memory allocations in memory heap +management to ensure correct alignment for doubles etc. */ +#define UNIV_MEM_ALIGNMENT 8 + +/* The following alignment is used in aligning lints etc. */ +#define UNIV_WORD_ALIGNMENT UNIV_WORD_SIZE + +/* + DATABASE VERSION CONTROL + ======================== +*/ + +/* The 2-logarithm of UNIV_PAGE_SIZE: */ +#define UNIV_PAGE_SIZE_SHIFT 14 +/* The universal page size of the database */ +#define UNIV_PAGE_SIZE (1 << UNIV_PAGE_SIZE_SHIFT) + +/* Maximum number of parallel threads in a parallelized operation */ +#define UNIV_MAX_PARALLELISM 32 + +/* + UNIVERSAL TYPE DEFINITIONS + ========================== +*/ + +/* Note that inside MySQL 'byte' is defined as char on Linux! */ +#define byte unsigned char + +/* Define an unsigned integer type that is exactly 32 bits. */ + +#if SIZEOF_INT == 4 +typedef unsigned int ib_uint32_t; +#elif SIZEOF_LONG == 4 +typedef unsigned long ib_uint32_t; +#else +#error "Neither int or long is 4 bytes" +#endif + +/* Another basic type we use is unsigned long integer which should be equal to +the word size of the machine, that is on a 32-bit platform 32 bits, and on a +64-bit platform 64 bits. We also give the printf format for the type as a +macro ULINTPF. */ + +#ifdef _WIN64 +typedef unsigned __int64 ulint; +#define ULINTPF "%I64u" +typedef __int64 lint; +#else +typedef unsigned long int ulint; +#define ULINTPF "%lu" +typedef long int lint; +#endif + +#ifdef __WIN__ +typedef __int64 ib_int64_t; +typedef unsigned __int64 ib_uint64_t; +#else +/* Note: longlong and ulonglong come from MySQL headers. */ +typedef longlong ib_int64_t; +typedef ulonglong ib_uint64_t; +#endif + +typedef unsigned long long int ullint; + +#ifndef __WIN__ +#if SIZEOF_LONG != SIZEOF_VOIDP +#error "Error: InnoDB's ulint must be of the same size as void*" +#endif +#endif + +/* The 'undefined' value for a ulint */ +#define ULINT_UNDEFINED ((ulint)(-1)) + +/* The undefined 32-bit unsigned integer */ +#define ULINT32_UNDEFINED 0xFFFFFFFF + +/* Maximum value for a ulint */ +#define ULINT_MAX ((ulint)(-2)) + +/* Maximum value for ib_uint64_t */ +#define IB_ULONGLONG_MAX ((ib_uint64_t) (~0ULL)) + +/* This 'ibool' type is used within Innobase. Remember that different included +headers may define 'bool' differently. Do not assume that 'bool' is a ulint! */ +#define ibool ulint + +#ifndef TRUE + +#define TRUE 1 +#define FALSE 0 + +#endif + +/* The following number as the length of a logical field means that the field +has the SQL NULL as its value. NOTE that because we assume that the length +of a field is a 32-bit integer when we store it, for example, to an undo log +on disk, we must have also this number fit in 32 bits, also in 64-bit +computers! */ + +#define UNIV_SQL_NULL ULINT32_UNDEFINED + +/* Lengths which are not UNIV_SQL_NULL, but bigger than the following +number indicate that a field contains a reference to an externally +stored part of the field in the tablespace. The length field then +contains the sum of the following flag and the locally stored len. */ + +#define UNIV_EXTERN_STORAGE_FIELD (UNIV_SQL_NULL - UNIV_PAGE_SIZE) + +/* Some macros to improve branch prediction and reduce cache misses */ +#if defined(__GNUC__) && (__GNUC__ > 2) && ! defined(__INTEL_COMPILER) +/* Tell the compiler that 'expr' probably evaluates to 'constant'. */ +# define UNIV_EXPECT(expr,constant) __builtin_expect(expr, constant) +/* Tell the compiler that a pointer is likely to be NULL */ +# define UNIV_LIKELY_NULL(ptr) __builtin_expect((ulint) ptr, 0) +/* Minimize cache-miss latency by moving data at addr into a cache before +it is read. */ +# define UNIV_PREFETCH_R(addr) __builtin_prefetch(addr, 0, 3) +/* Minimize cache-miss latency by moving data at addr into a cache before +it is read or written. */ +# define UNIV_PREFETCH_RW(addr) __builtin_prefetch(addr, 1, 3) +#else +/* Dummy versions of the macros */ +# define UNIV_EXPECT(expr,value) (expr) +# define UNIV_LIKELY_NULL(expr) (expr) +# define UNIV_PREFETCH_R(addr) ((void) 0) +# define UNIV_PREFETCH_RW(addr) ((void) 0) +#endif +/* Tell the compiler that cond is likely to hold */ +#define UNIV_LIKELY(cond) UNIV_EXPECT(cond, TRUE) +/* Tell the compiler that cond is unlikely to hold */ +#define UNIV_UNLIKELY(cond) UNIV_EXPECT(cond, FALSE) + +/* Compile-time constant of the given array's size. */ +#define UT_ARR_SIZE(a) (sizeof(a) / sizeof((a)[0])) + +/* The return type from a thread's start function differs between Unix and +Windows, so define a typedef for it and a macro to use at the end of such +functions. */ + +#ifdef __WIN__ +typedef ulint os_thread_ret_t; +#define OS_THREAD_DUMMY_RETURN return(0) +#else +typedef void* os_thread_ret_t; +#define OS_THREAD_DUMMY_RETURN return(NULL) +#endif + +#include <stdio.h> +#include "ut0dbg.h" +#include "ut0ut.h" +#include "db0err.h" +#ifdef UNIV_DEBUG_VALGRIND +# include <valgrind/memcheck.h> +# define UNIV_MEM_VALID(addr, size) VALGRIND_MAKE_MEM_DEFINED(addr, size) +# define UNIV_MEM_INVALID(addr, size) VALGRIND_MAKE_MEM_UNDEFINED(addr, size) +# define UNIV_MEM_FREE(addr, size) VALGRIND_MAKE_MEM_NOACCESS(addr, size) +# define UNIV_MEM_ALLOC(addr, size) VALGRIND_MAKE_MEM_UNDEFINED(addr, size) +# define UNIV_MEM_DESC(addr, size, b) VALGRIND_CREATE_BLOCK(addr, size, b) +# define UNIV_MEM_UNDESC(b) VALGRIND_DISCARD(b) +# define UNIV_MEM_ASSERT_RW(addr, size) do { \ + const void* _p = (const void*) (ulint) \ + VALGRIND_CHECK_MEM_IS_DEFINED(addr, size); \ + if (UNIV_LIKELY_NULL(_p)) \ + fprintf(stderr, "%s:%d: %p[%u] undefined at %ld\n", \ + __FILE__, __LINE__, \ + (const void*) (addr), (unsigned) (size), (long) \ + (((const char*) _p) - ((const char*) (addr)))); \ + } while (0) +# define UNIV_MEM_ASSERT_W(addr, size) do { \ + const void* _p = (const void*) (ulint) \ + VALGRIND_CHECK_MEM_IS_ADDRESSABLE(addr, size); \ + if (UNIV_LIKELY_NULL(_p)) \ + fprintf(stderr, "%s:%d: %p[%u] unwritable at %ld\n", \ + __FILE__, __LINE__, \ + (const void*) (addr), (unsigned) (size), (long) \ + (((const char*) _p) - ((const char*) (addr)))); \ + } while (0) +#else +# define UNIV_MEM_VALID(addr, size) do {} while(0) +# define UNIV_MEM_INVALID(addr, size) do {} while(0) +# define UNIV_MEM_FREE(addr, size) do {} while(0) +# define UNIV_MEM_ALLOC(addr, size) do {} while(0) +# define UNIV_MEM_DESC(addr, size, b) do {} while(0) +# define UNIV_MEM_UNDESC(b) do {} while(0) +# define UNIV_MEM_ASSERT_RW(addr, size) do {} while(0) +# define UNIV_MEM_ASSERT_W(addr, size) do {} while(0) +#endif +#define UNIV_MEM_ASSERT_AND_FREE(addr, size) do { \ + UNIV_MEM_ASSERT_W(addr, size); \ + UNIV_MEM_FREE(addr, size); \ +} while (0) +#define UNIV_MEM_ASSERT_AND_ALLOC(addr, size) do { \ + UNIV_MEM_ASSERT_W(addr, size); \ + UNIV_MEM_ALLOC(addr, size); \ +} while (0) + +#endif === added file 'storage/xtradb/include/usr0sess.h' --- a/storage/xtradb/include/usr0sess.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/usr0sess.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,77 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Sessions + +Created 6/25/1996 Heikki Tuuri +*******************************************************/ + +#ifndef usr0sess_h +#define usr0sess_h + +#include "univ.i" +#include "ut0byte.h" +#include "trx0types.h" +#include "srv0srv.h" +#include "trx0types.h" +#include "usr0types.h" +#include "que0types.h" +#include "data0data.h" +#include "rem0rec.h" + +/************************************************************************* +Opens a session. */ +UNIV_INTERN +sess_t* +sess_open(void); +/*============*/ + /* out, own: session object */ +/************************************************************************* +Closes a session, freeing the memory occupied by it, if it is in a state +where it should be closed. */ +UNIV_INTERN +ibool +sess_try_close( +/*===========*/ + /* out: TRUE if closed */ + sess_t* sess); /* in, own: session object */ + +/* The session handle. All fields are protected by the kernel mutex */ +struct sess_struct{ + ulint state; /* state of the session */ + trx_t* trx; /* transaction object permanently + assigned for the session: the + transaction instance designated by the + trx id changes, but the memory + structure is preserved */ + UT_LIST_BASE_NODE_T(que_t) + graphs; /* query graphs belonging to this + session */ +}; + +/* Session states */ +#define SESS_ACTIVE 1 +#define SESS_ERROR 2 /* session contains an error message + which has not yet been communicated + to the client */ +#ifndef UNIV_NONINL +#include "usr0sess.ic" +#endif + +#endif === added file 'storage/xtradb/include/usr0sess.ic' --- a/storage/xtradb/include/usr0sess.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/usr0sess.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,23 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Sessions + +Created 6/25/1996 Heikki Tuuri +*******************************************************/ === added file 'storage/xtradb/include/usr0types.h' --- a/storage/xtradb/include/usr0types.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/usr0types.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,30 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Users and sessions global types + +Created 6/25/1996 Heikki Tuuri +*******************************************************/ + +#ifndef usr0types_h +#define usr0types_h + +typedef struct sess_struct sess_t; + +#endif === added file 'storage/xtradb/include/ut0auxconf.h' --- a/storage/xtradb/include/ut0auxconf.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/ut0auxconf.h 2009-04-27 04:54:14 +0000 @@ -0,0 +1,14 @@ +/* Do not remove this file even though it is empty. +This file is included in univ.i and will cause compilation failure +if not present. +A custom check has been added in the generated +storage/innobase/Makefile.in that is shipped with with the InnoDB Plugin +source archive. This check tries to compile a test program and if +successful then adds "#define HAVE_ATOMIC_PTHREAD_T" to this file. +This is a hack that has been developed in order to check for pthread_t +atomicity without the need to regenerate the ./configure script that is +distributed in the MySQL 5.1 official source archives. +If by any chance Makefile.in and ./configure are regenerated and thus +the hack from Makefile.in wiped away then the "real" check from plug.in +will take over. +*/ === added file 'storage/xtradb/include/ut0byte.h' --- a/storage/xtradb/include/ut0byte.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/ut0byte.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,268 @@ +/***************************************************************************** + +Copyright (c) 1994, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/********************************************************************** +Utilities for byte operations + +Created 1/20/1994 Heikki Tuuri +***********************************************************************/ + +#ifndef ut0byte_h +#define ut0byte_h + + +#include "univ.i" + +/* Type definition for a 64-bit unsigned integer, which works also +in 32-bit machines. NOTE! Access the fields only with the accessor +functions. This definition appears here only for the compiler to +know the size of a dulint. */ + +typedef struct dulint_struct dulint; +struct dulint_struct{ + ulint high; /* most significant 32 bits */ + ulint low; /* least significant 32 bits */ +}; + +/* Zero value for a dulint */ +extern const dulint ut_dulint_zero; + +/* Maximum value for a dulint */ +extern const dulint ut_dulint_max; + +/*********************************************************** +Creates a 64-bit dulint out of two ulints. */ +UNIV_INLINE +dulint +ut_dulint_create( +/*=============*/ + /* out: created dulint */ + ulint high, /* in: high-order 32 bits */ + ulint low); /* in: low-order 32 bits */ +/*********************************************************** +Gets the high-order 32 bits of a dulint. */ +UNIV_INLINE +ulint +ut_dulint_get_high( +/*===============*/ + /* out: 32 bits in ulint */ + dulint d); /* in: dulint */ +/*********************************************************** +Gets the low-order 32 bits of a dulint. */ +UNIV_INLINE +ulint +ut_dulint_get_low( +/*==============*/ + /* out: 32 bits in ulint */ + dulint d); /* in: dulint */ +/*********************************************************** +Converts a dulint (a struct of 2 ulints) to ib_int64_t, which is a 64-bit +integer type. */ +UNIV_INLINE +ib_int64_t +ut_conv_dulint_to_longlong( +/*=======================*/ + /* out: value in ib_int64_t type */ + dulint d); /* in: dulint */ +/*********************************************************** +Tests if a dulint is zero. */ +UNIV_INLINE +ibool +ut_dulint_is_zero( +/*==============*/ + /* out: TRUE if zero */ + dulint a); /* in: dulint */ +/*********************************************************** +Compares two dulints. */ +UNIV_INLINE +int +ut_dulint_cmp( +/*==========*/ + /* out: -1 if a < b, 0 if a == b, + 1 if a > b */ + dulint a, /* in: dulint */ + dulint b); /* in: dulint */ +/*********************************************************** +Calculates the max of two dulints. */ +UNIV_INLINE +dulint +ut_dulint_get_max( +/*==============*/ + /* out: max(a, b) */ + dulint a, /* in: dulint */ + dulint b); /* in: dulint */ +/*********************************************************** +Calculates the min of two dulints. */ +UNIV_INLINE +dulint +ut_dulint_get_min( +/*==============*/ + /* out: min(a, b) */ + dulint a, /* in: dulint */ + dulint b); /* in: dulint */ +/*********************************************************** +Adds a ulint to a dulint. */ +UNIV_INLINE +dulint +ut_dulint_add( +/*==========*/ + /* out: sum a + b */ + dulint a, /* in: dulint */ + ulint b); /* in: ulint */ +/*********************************************************** +Subtracts a ulint from a dulint. */ +UNIV_INLINE +dulint +ut_dulint_subtract( +/*===============*/ + /* out: a - b */ + dulint a, /* in: dulint */ + ulint b); /* in: ulint, b <= a */ +/*********************************************************** +Subtracts a dulint from another. NOTE that the difference must be positive +and smaller that 4G. */ +UNIV_INLINE +ulint +ut_dulint_minus( +/*============*/ + /* out: a - b */ + dulint a, /* in: dulint; NOTE a must be >= b and at most + 2 to power 32 - 1 greater */ + dulint b); /* in: dulint */ +/************************************************************ +Rounds a dulint downward to a multiple of a power of 2. */ +UNIV_INLINE +dulint +ut_dulint_align_down( +/*=================*/ + /* out: rounded value */ + dulint n, /* in: number to be rounded */ + ulint align_no); /* in: align by this number which must be a + power of 2 */ +/************************************************************ +Rounds a dulint upward to a multiple of a power of 2. */ +UNIV_INLINE +dulint +ut_dulint_align_up( +/*===============*/ + /* out: rounded value */ + dulint n, /* in: number to be rounded */ + ulint align_no); /* in: align by this number which must be a + power of 2 */ +/************************************************************ +Rounds a dulint downward to a multiple of a power of 2. */ +UNIV_INLINE +ib_uint64_t +ut_uint64_align_down( +/*=================*/ + /* out: rounded value */ + ib_uint64_t n, /* in: number to be rounded */ + ulint align_no); /* in: align by this number + which must be a power of 2 */ +/************************************************************ +Rounds ib_uint64_t upward to a multiple of a power of 2. */ +UNIV_INLINE +ib_uint64_t +ut_uint64_align_up( +/*===============*/ + /* out: rounded value */ + ib_uint64_t n, /* in: number to be rounded */ + ulint align_no); /* in: align by this number + which must be a power of 2 */ +/*********************************************************** +Increments a dulint variable by 1. */ +#define UT_DULINT_INC(D)\ +{\ + if ((D).low == 0xFFFFFFFFUL) {\ + (D).high = (D).high + 1;\ + (D).low = 0;\ + } else {\ + (D).low = (D).low + 1;\ + }\ +} +/*********************************************************** +Tests if two dulints are equal. */ +#define UT_DULINT_EQ(D1, D2) (((D1).low == (D2).low)\ + && ((D1).high == (D2).high)) +#ifdef notdefined +/**************************************************************** +Sort function for dulint arrays. */ +UNIV_INTERN +void +ut_dulint_sort(dulint* arr, dulint* aux_arr, ulint low, ulint high); +/*===============================================================*/ +#endif /* notdefined */ + +/************************************************************* +The following function rounds up a pointer to the nearest aligned address. */ +UNIV_INLINE +void* +ut_align( +/*=====*/ + /* out: aligned pointer */ + void* ptr, /* in: pointer */ + ulint align_no); /* in: align by this number */ +/************************************************************* +The following function rounds down a pointer to the nearest +aligned address. */ +UNIV_INLINE +void* +ut_align_down( +/*==========*/ + /* out: aligned pointer */ + const void* ptr, /* in: pointer */ + ulint align_no) /* in: align by this number */ + __attribute__((const)); +/************************************************************* +The following function computes the offset of a pointer from the nearest +aligned address. */ +UNIV_INLINE +ulint +ut_align_offset( +/*============*/ + /* out: distance from aligned + pointer */ + const void* ptr, /* in: pointer */ + ulint align_no) /* in: align by this number */ + __attribute__((const)); +/********************************************************************* +Gets the nth bit of a ulint. */ +UNIV_INLINE +ibool +ut_bit_get_nth( +/*===========*/ + /* out: TRUE if nth bit is 1; 0th bit is defined to + be the least significant */ + ulint a, /* in: ulint */ + ulint n); /* in: nth bit requested */ +/********************************************************************* +Sets the nth bit of a ulint. */ +UNIV_INLINE +ulint +ut_bit_set_nth( +/*===========*/ + /* out: the ulint with the bit set as requested */ + ulint a, /* in: ulint */ + ulint n, /* in: nth bit requested */ + ibool val); /* in: value for the bit to set */ + +#ifndef UNIV_NONINL +#include "ut0byte.ic" +#endif + +#endif === added file 'storage/xtradb/include/ut0byte.ic' --- a/storage/xtradb/include/ut0byte.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/ut0byte.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,413 @@ +/***************************************************************************** + +Copyright (c) 1994, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************************** +Utilities for byte operations + +Created 5/30/1994 Heikki Tuuri +*******************************************************************/ + +/*********************************************************** +Creates a 64-bit dulint out of two ulints. */ +UNIV_INLINE +dulint +ut_dulint_create( +/*=============*/ + /* out: created dulint */ + ulint high, /* in: high-order 32 bits */ + ulint low) /* in: low-order 32 bits */ +{ + dulint res; + + ut_ad(high <= 0xFFFFFFFF); + ut_ad(low <= 0xFFFFFFFF); + + res.high = high; + res.low = low; + + return(res); +} + +/*********************************************************** +Gets the high-order 32 bits of a dulint. */ +UNIV_INLINE +ulint +ut_dulint_get_high( +/*===============*/ + /* out: 32 bits in ulint */ + dulint d) /* in: dulint */ +{ + return(d.high); +} + +/*********************************************************** +Gets the low-order 32 bits of a dulint. */ +UNIV_INLINE +ulint +ut_dulint_get_low( +/*==============*/ + /* out: 32 bits in ulint */ + dulint d) /* in: dulint */ +{ + return(d.low); +} + +/*********************************************************** +Converts a dulint (a struct of 2 ulints) to ib_int64_t, which is a 64-bit +integer type. */ +UNIV_INLINE +ib_int64_t +ut_conv_dulint_to_longlong( +/*=======================*/ + /* out: value in ib_int64_t type */ + dulint d) /* in: dulint */ +{ + return((ib_int64_t)d.low + + (((ib_int64_t)d.high) << 32)); +} + +/*********************************************************** +Tests if a dulint is zero. */ +UNIV_INLINE +ibool +ut_dulint_is_zero( +/*==============*/ + /* out: TRUE if zero */ + dulint a) /* in: dulint */ +{ + if ((a.low == 0) && (a.high == 0)) { + + return(TRUE); + } + + return(FALSE); +} + +/*********************************************************** +Compares two dulints. */ +UNIV_INLINE +int +ut_dulint_cmp( +/*==========*/ + /* out: -1 if a < b, 0 if a == b, + 1 if a > b */ + dulint a, /* in: dulint */ + dulint b) /* in: dulint */ +{ + if (a.high > b.high) { + return(1); + } else if (a.high < b.high) { + return(-1); + } else if (a.low > b.low) { + return(1); + } else if (a.low < b.low) { + return(-1); + } else { + return(0); + } +} + +/*********************************************************** +Calculates the max of two dulints. */ +UNIV_INLINE +dulint +ut_dulint_get_max( +/*==============*/ + /* out: max(a, b) */ + dulint a, /* in: dulint */ + dulint b) /* in: dulint */ +{ + if (ut_dulint_cmp(a, b) > 0) { + + return(a); + } + + return(b); +} + +/*********************************************************** +Calculates the min of two dulints. */ +UNIV_INLINE +dulint +ut_dulint_get_min( +/*==============*/ + /* out: min(a, b) */ + dulint a, /* in: dulint */ + dulint b) /* in: dulint */ +{ + if (ut_dulint_cmp(a, b) > 0) { + + return(b); + } + + return(a); +} + +/*********************************************************** +Adds a ulint to a dulint. */ +UNIV_INLINE +dulint +ut_dulint_add( +/*==========*/ + /* out: sum a + b */ + dulint a, /* in: dulint */ + ulint b) /* in: ulint */ +{ + if (0xFFFFFFFFUL - b >= a.low) { + a.low += b; + + return(a); + } + + a.low = a.low - (0xFFFFFFFFUL - b) - 1; + + a.high++; + + return(a); +} + +/*********************************************************** +Subtracts a ulint from a dulint. */ +UNIV_INLINE +dulint +ut_dulint_subtract( +/*===============*/ + /* out: a - b */ + dulint a, /* in: dulint */ + ulint b) /* in: ulint, b <= a */ +{ + if (a.low >= b) { + a.low -= b; + + return(a); + } + + b -= a.low + 1; + + a.low = 0xFFFFFFFFUL - b; + + ut_ad(a.high > 0); + + a.high--; + + return(a); +} + +/*********************************************************** +Subtracts a dulint from another. NOTE that the difference must be positive +and smaller that 4G. */ +UNIV_INLINE +ulint +ut_dulint_minus( +/*============*/ + /* out: a - b */ + dulint a, /* in: dulint; NOTE a must be >= b and at most + 2 to power 32 - 1 greater */ + dulint b) /* in: dulint */ +{ + ulint diff; + + if (a.high == b.high) { + ut_ad(a.low >= b.low); + + return(a.low - b.low); + } + + ut_ad(a.high == b.high + 1); + + diff = (ulint)(0xFFFFFFFFUL - b.low); + diff += 1 + a.low; + + ut_ad(diff > a.low); + + return(diff); +} + +/************************************************************ +Rounds a dulint downward to a multiple of a power of 2. */ +UNIV_INLINE +dulint +ut_dulint_align_down( +/*=================*/ + /* out: rounded value */ + dulint n, /* in: number to be rounded */ + ulint align_no) /* in: align by this number which must be a + power of 2 */ +{ + ulint low, high; + + ut_ad(align_no > 0); + ut_ad(((align_no - 1) & align_no) == 0); + + low = ut_dulint_get_low(n); + high = ut_dulint_get_high(n); + + low = low & ~(align_no - 1); + + return(ut_dulint_create(high, low)); +} + +/************************************************************ +Rounds a dulint upward to a multiple of a power of 2. */ +UNIV_INLINE +dulint +ut_dulint_align_up( +/*===============*/ + /* out: rounded value */ + dulint n, /* in: number to be rounded */ + ulint align_no) /* in: align by this number which must be a + power of 2 */ +{ + return(ut_dulint_align_down(ut_dulint_add(n, align_no - 1), align_no)); +} + +/************************************************************ +Rounds ib_uint64_t downward to a multiple of a power of 2. */ +UNIV_INLINE +ib_uint64_t +ut_uint64_align_down( +/*=================*/ + /* out: rounded value */ + ib_uint64_t n, /* in: number to be rounded */ + ulint align_no) /* in: align by this number + which must be a power of 2 */ +{ + ut_ad(align_no > 0); + ut_ad(ut_is_2pow(align_no)); + + return(n & ~((ib_uint64_t) align_no - 1)); +} + +/************************************************************ +Rounds ib_uint64_t upward to a multiple of a power of 2. */ +UNIV_INLINE +ib_uint64_t +ut_uint64_align_up( +/*===============*/ + /* out: rounded value */ + ib_uint64_t n, /* in: number to be rounded */ + ulint align_no) /* in: align by this number + which must be a power of 2 */ +{ + ib_uint64_t align_1 = (ib_uint64_t) align_no - 1; + + ut_ad(align_no > 0); + ut_ad(ut_is_2pow(align_no)); + + return((n + align_1) & ~align_1); +} + +/************************************************************* +The following function rounds up a pointer to the nearest aligned address. */ +UNIV_INLINE +void* +ut_align( +/*=====*/ + /* out: aligned pointer */ + void* ptr, /* in: pointer */ + ulint align_no) /* in: align by this number */ +{ + ut_ad(align_no > 0); + ut_ad(((align_no - 1) & align_no) == 0); + ut_ad(ptr); + + ut_ad(sizeof(void*) == sizeof(ulint)); + + return((void*)((((ulint)ptr) + align_no - 1) & ~(align_no - 1))); +} + +/************************************************************* +The following function rounds down a pointer to the nearest +aligned address. */ +UNIV_INLINE +void* +ut_align_down( +/*==========*/ + /* out: aligned pointer */ + const void* ptr, /* in: pointer */ + ulint align_no) /* in: align by this number */ +{ + ut_ad(align_no > 0); + ut_ad(((align_no - 1) & align_no) == 0); + ut_ad(ptr); + + ut_ad(sizeof(void*) == sizeof(ulint)); + + return((void*)((((ulint)ptr)) & ~(align_no - 1))); +} + +/************************************************************* +The following function computes the offset of a pointer from the nearest +aligned address. */ +UNIV_INLINE +ulint +ut_align_offset( +/*============*/ + /* out: distance from + aligned pointer */ + const void* ptr, /* in: pointer */ + ulint align_no) /* in: align by this number */ +{ + ut_ad(align_no > 0); + ut_ad(((align_no - 1) & align_no) == 0); + ut_ad(ptr); + + ut_ad(sizeof(void*) == sizeof(ulint)); + + return(((ulint)ptr) & (align_no - 1)); +} + +/********************************************************************* +Gets the nth bit of a ulint. */ +UNIV_INLINE +ibool +ut_bit_get_nth( +/*===========*/ + /* out: TRUE if nth bit is 1; 0th bit is defined to + be the least significant */ + ulint a, /* in: ulint */ + ulint n) /* in: nth bit requested */ +{ + ut_ad(n < 8 * sizeof(ulint)); +#if TRUE != 1 +# error "TRUE != 1" +#endif + return(1 & (a >> n)); +} + +/********************************************************************* +Sets the nth bit of a ulint. */ +UNIV_INLINE +ulint +ut_bit_set_nth( +/*===========*/ + /* out: the ulint with the bit set as requested */ + ulint a, /* in: ulint */ + ulint n, /* in: nth bit requested */ + ibool val) /* in: value for the bit to set */ +{ + ut_ad(n < 8 * sizeof(ulint)); +#if TRUE != 1 +# error "TRUE != 1" +#endif + if (val) { + return(((ulint) 1 << n) | a); + } else { + return(~((ulint) 1 << n) & a); + } +} === added file 'storage/xtradb/include/ut0dbg.h' --- a/storage/xtradb/include/ut0dbg.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/ut0dbg.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,160 @@ +/***************************************************************************** + +Copyright (c) 1994, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/********************************************************************* +Debug utilities for Innobase + +Created 1/30/1994 Heikki Tuuri +**********************************************************************/ + +#ifndef ut0dbg_h +#define ut0dbg_h + +#include "univ.i" +#include <stdlib.h> +#include "os0thread.h" + +#if defined(__GNUC__) && (__GNUC__ > 2) +# define UT_DBG_FAIL(EXPR) UNIV_UNLIKELY(!((ulint)(EXPR))) +#else +extern ulint ut_dbg_zero; /* This is used to eliminate + compiler warnings */ +# define UT_DBG_FAIL(EXPR) !((ulint)(EXPR) + ut_dbg_zero) +#endif + +/***************************************************************** +Report a failed assertion. */ +UNIV_INTERN +void +ut_dbg_assertion_failed( +/*====================*/ + const char* expr, /* in: the failed assertion */ + const char* file, /* in: source file containing the assertion */ + ulint line); /* in: line number of the assertion */ + +#ifdef __NETWARE__ +/* Flag for ignoring further assertion failures. +On NetWare, have a graceful exit rather than a segfault to avoid abends. */ +extern ibool panic_shutdown; +/* Abort the execution. */ +void ut_dbg_panic(void); +# define UT_DBG_PANIC ut_dbg_panic() +/* Stop threads in ut_a(). */ +# define UT_DBG_STOP do {} while (0) /* We do not do this on NetWare */ +#else /* __NETWARE__ */ +# if defined(__WIN__) || defined(__INTEL_COMPILER) +# undef UT_DBG_USE_ABORT +# elif defined(__GNUC__) && (__GNUC__ > 2) +# define UT_DBG_USE_ABORT +# endif + +# ifndef UT_DBG_USE_ABORT +/* A null pointer that will be dereferenced to trigger a memory trap */ +extern ulint* ut_dbg_null_ptr; +# endif + +# if defined(UNIV_SYNC_DEBUG) || !defined(UT_DBG_USE_ABORT) +/* Flag for indicating that all threads should stop. This will be set +by ut_dbg_assertion_failed(). */ +extern ibool ut_dbg_stop_threads; + +/***************************************************************** +Stop a thread after assertion failure. */ +UNIV_INTERN +void +ut_dbg_stop_thread( +/*===============*/ + const char* file, + ulint line); +# endif + +# ifdef UT_DBG_USE_ABORT +/* Abort the execution. */ +# define UT_DBG_PANIC abort() +/* Stop threads (null operation) */ +# define UT_DBG_STOP do {} while (0) +# else /* UT_DBG_USE_ABORT */ +/* Abort the execution. */ +# define UT_DBG_PANIC \ + if (*(ut_dbg_null_ptr)) ut_dbg_null_ptr = NULL +/* Stop threads in ut_a(). */ +# define UT_DBG_STOP do \ + if (UNIV_UNLIKELY(ut_dbg_stop_threads)) { \ + ut_dbg_stop_thread(__FILE__, (ulint) __LINE__); \ + } while (0) +# endif /* UT_DBG_USE_ABORT */ +#endif /* __NETWARE__ */ + +/* Abort execution if EXPR does not evaluate to nonzero. */ +#define ut_a(EXPR) do { \ + if (UT_DBG_FAIL(EXPR)) { \ + ut_dbg_assertion_failed(#EXPR, \ + __FILE__, (ulint) __LINE__); \ + UT_DBG_PANIC; \ + } \ + UT_DBG_STOP; \ +} while (0) + +/* Abort execution. */ +#define ut_error do { \ + ut_dbg_assertion_failed(0, __FILE__, (ulint) __LINE__); \ + UT_DBG_PANIC; \ +} while (0) + +#ifdef UNIV_DEBUG +#define ut_ad(EXPR) ut_a(EXPR) +#define ut_d(EXPR) do {EXPR;} while (0) +#else +#define ut_ad(EXPR) +#define ut_d(EXPR) +#endif + +#define UT_NOT_USED(A) A = A + +#ifdef UNIV_COMPILE_TEST_FUNCS + +#include <sys/types.h> +#include <sys/time.h> +#include <sys/resource.h> + +/* structure used for recording usage statistics */ +typedef struct speedo_struct { + struct rusage ru; + struct timeval tv; +} speedo_t; + +/*********************************************************************** +Resets a speedo (records the current time in it). */ +UNIV_INTERN +void +speedo_reset( +/*=========*/ + speedo_t* speedo); /* out: speedo */ + +/*********************************************************************** +Shows the time elapsed and usage statistics since the last reset of a +speedo. */ +UNIV_INTERN +void +speedo_show( +/*========*/ + const speedo_t* speedo); /* in: speedo */ + +#endif /* UNIV_COMPILE_TEST_FUNCS */ + +#endif === added file 'storage/xtradb/include/ut0list.h' --- a/storage/xtradb/include/ut0list.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/ut0list.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,165 @@ +/***************************************************************************** + +Copyright (c) 2006, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/*********************************************************************** +A double-linked list. This differs from the one in ut0lst.h in that in this +one, each list node contains a pointer to the data, whereas the one in +ut0lst.h uses a strategy where the list pointers are embedded in the data +items themselves. + +Use this one when you need to store arbitrary data in the list where you +can't embed the list pointers in the data, if a data item needs to be +stored in multiple lists, etc. + +Note about the memory management: ib_list_t is a fixed-size struct whose +allocation/deallocation is done through ib_list_create/ib_list_free, but the +memory for the list nodes is allocated through a user-given memory heap, +which can either be the same for all nodes or vary per node. Most users will +probably want to create a memory heap to store the item-specific data, and +pass in this same heap to the list node creation functions, thus +automatically freeing the list node when the item's heap is freed. + +************************************************************************/ + +#ifndef IB_LIST_H +#define IB_LIST_H + +#include "mem0mem.h" + +typedef struct ib_list_struct ib_list_t; +typedef struct ib_list_node_struct ib_list_node_t; +typedef struct ib_list_helper_struct ib_list_helper_t; + +/******************************************************************** +Create a new list using mem_alloc. Lists created with this function must be +freed with ib_list_free. */ +UNIV_INTERN +ib_list_t* +ib_list_create(void); +/*=================*/ + /* out: list */ + + +/******************************************************************** +Create a new list using the given heap. ib_list_free MUST NOT BE CALLED for +lists created with this function. */ +UNIV_INTERN +ib_list_t* +ib_list_create_heap( +/*================*/ + /* out: list */ + mem_heap_t* heap); /* in: memory heap to use */ + +/******************************************************************** +Free a list. */ +UNIV_INTERN +void +ib_list_free( +/*=========*/ + ib_list_t* list); /* in: list */ + +/******************************************************************** +Add the data to the start of the list. */ +UNIV_INTERN +ib_list_node_t* +ib_list_add_first( +/*==============*/ + /* out: new list node*/ + ib_list_t* list, /* in: list */ + void* data, /* in: data */ + mem_heap_t* heap); /* in: memory heap to use */ + +/******************************************************************** +Add the data to the end of the list. */ +UNIV_INTERN +ib_list_node_t* +ib_list_add_last( +/*=============*/ + /* out: new list node*/ + ib_list_t* list, /* in: list */ + void* data, /* in: data */ + mem_heap_t* heap); /* in: memory heap to use */ + +/******************************************************************** +Add the data after the indicated node. */ +UNIV_INTERN +ib_list_node_t* +ib_list_add_after( +/*==============*/ + /* out: new list node*/ + ib_list_t* list, /* in: list */ + ib_list_node_t* prev_node, /* in: node preceding new node (can + be NULL) */ + void* data, /* in: data */ + mem_heap_t* heap); /* in: memory heap to use */ + +/******************************************************************** +Remove the node from the list. */ +UNIV_INTERN +void +ib_list_remove( +/*===========*/ + ib_list_t* list, /* in: list */ + ib_list_node_t* node); /* in: node to remove */ + +/******************************************************************** +Get the first node in the list. */ +UNIV_INLINE +ib_list_node_t* +ib_list_get_first( +/*==============*/ + /* out: first node, or NULL */ + ib_list_t* list); /* in: list */ + +/******************************************************************** +Get the last node in the list. */ +UNIV_INLINE +ib_list_node_t* +ib_list_get_last( +/*=============*/ + /* out: last node, or NULL */ + ib_list_t* list); /* in: list */ + +/* List. */ +struct ib_list_struct { + ib_list_node_t* first; /* first node */ + ib_list_node_t* last; /* last node */ + ibool is_heap_list; /* TRUE if this list was + allocated through a heap */ +}; + +/* A list node. */ +struct ib_list_node_struct { + ib_list_node_t* prev; /* previous node */ + ib_list_node_t* next; /* next node */ + void* data; /* user data */ +}; + +/* Quite often, the only additional piece of data you need is the per-item +memory heap, so we have this generic struct available to use in those +cases. */ +struct ib_list_helper_struct { + mem_heap_t* heap; /* memory heap */ + void* data; /* user data */ +}; + +#ifndef UNIV_NONINL +#include "ut0list.ic" +#endif + +#endif === added file 'storage/xtradb/include/ut0list.ic' --- a/storage/xtradb/include/ut0list.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/ut0list.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,41 @@ +/***************************************************************************** + +Copyright (c) 2006, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/******************************************************************** +Get the first node in the list. */ +UNIV_INLINE +ib_list_node_t* +ib_list_get_first( +/*==============*/ + /* out: first node, or NULL */ + ib_list_t* list) /* in: list */ +{ + return(list->first); +} + +/******************************************************************** +Get the last node in the list. */ +UNIV_INLINE +ib_list_node_t* +ib_list_get_last( +/*=============*/ + /* out: last node, or NULL */ + ib_list_t* list) /* in: list */ +{ + return(list->last); +} === added file 'storage/xtradb/include/ut0lst.h' --- a/storage/xtradb/include/ut0lst.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/ut0lst.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,243 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/********************************************************************** +List utilities + +Created 9/10/1995 Heikki Tuuri +***********************************************************************/ + +#ifndef ut0lst_h +#define ut0lst_h + +#include "univ.i" + +/* This module implements the two-way linear list which should be used +if a list is used in the database. Note that a single struct may belong +to two or more lists, provided that the list are given different names. +An example of the usage of the lists can be found in fil0fil.c. */ + +/*********************************************************************** +This macro expands to the unnamed type definition of a struct which acts +as the two-way list base node. The base node contains pointers +to both ends of the list and a count of nodes in the list (excluding +the base node from the count). TYPE should be the list node type name. */ + +#define UT_LIST_BASE_NODE_T(TYPE)\ +struct {\ + ulint count; /* count of nodes in list */\ + TYPE * start; /* pointer to list start, NULL if empty */\ + TYPE * end; /* pointer to list end, NULL if empty */\ +}\ + +/*********************************************************************** +This macro expands to the unnamed type definition of a struct which +should be embedded in the nodes of the list, the node type must be a struct. +This struct contains the pointers to next and previous nodes in the list. +The name of the field in the node struct should be the name given +to the list. TYPE should be the list node type name. Example of usage: + +typedef struct LRU_node_struct LRU_node_t; +struct LRU_node_struct { + UT_LIST_NODE_T(LRU_node_t) LRU_list; + ... +} +The example implements an LRU list of name LRU_list. Its nodes are of type +LRU_node_t. +*/ + +#define UT_LIST_NODE_T(TYPE)\ +struct {\ + TYPE * prev; /* pointer to the previous node,\ + NULL if start of list */\ + TYPE * next; /* pointer to next node, NULL if end of list */\ +}\ + +/*********************************************************************** +Initializes the base node of a two-way list. */ + +#define UT_LIST_INIT(BASE)\ +{\ + (BASE).count = 0;\ + (BASE).start = NULL;\ + (BASE).end = NULL;\ +}\ + +/*********************************************************************** +Adds the node as the first element in a two-way linked list. +BASE has to be the base node (not a pointer to it). N has to be +the pointer to the node to be added to the list. NAME is the list name. */ + +#define UT_LIST_ADD_FIRST(NAME, BASE, N)\ +{\ + ut_ad(N);\ + ((BASE).count)++;\ + ((N)->NAME).next = (BASE).start;\ + ((N)->NAME).prev = NULL;\ + if (UNIV_LIKELY((BASE).start != NULL)) {\ + ut_ad((BASE).start != (N));\ + (((BASE).start)->NAME).prev = (N);\ + }\ + (BASE).start = (N);\ + if (UNIV_UNLIKELY((BASE).end == NULL)) {\ + (BASE).end = (N);\ + }\ +}\ + +/*********************************************************************** +Adds the node as the last element in a two-way linked list. +BASE has to be the base node (not a pointer to it). N has to be +the pointer to the node to be added to the list. NAME is the list name. */ + +#define UT_LIST_ADD_LAST(NAME, BASE, N)\ +{\ + ut_ad(N);\ + ((BASE).count)++;\ + ((N)->NAME).prev = (BASE).end;\ + ((N)->NAME).next = NULL;\ + if ((BASE).end != NULL) {\ + ut_ad((BASE).end != (N));\ + (((BASE).end)->NAME).next = (N);\ + }\ + (BASE).end = (N);\ + if ((BASE).start == NULL) {\ + (BASE).start = (N);\ + }\ +}\ + +/*********************************************************************** +Inserts a NODE2 after NODE1 in a list. +BASE has to be the base node (not a pointer to it). NAME is the list +name, NODE1 and NODE2 are pointers to nodes. */ + +#define UT_LIST_INSERT_AFTER(NAME, BASE, NODE1, NODE2)\ +{\ + ut_ad(NODE1);\ + ut_ad(NODE2);\ + ut_ad((NODE1) != (NODE2));\ + ((BASE).count)++;\ + ((NODE2)->NAME).prev = (NODE1);\ + ((NODE2)->NAME).next = ((NODE1)->NAME).next;\ + if (((NODE1)->NAME).next != NULL) {\ + ((((NODE1)->NAME).next)->NAME).prev = (NODE2);\ + }\ + ((NODE1)->NAME).next = (NODE2);\ + if ((BASE).end == (NODE1)) {\ + (BASE).end = (NODE2);\ + }\ +}\ + +/* Invalidate the pointers in a list node. */ +#ifdef UNIV_LIST_DEBUG +# define UT_LIST_REMOVE_CLEAR(NAME, N) \ +((N)->NAME.prev = (N)->NAME.next = (void*) -1) +#else +# define UT_LIST_REMOVE_CLEAR(NAME, N) while (0) +#endif + +/*********************************************************************** +Removes a node from a two-way linked list. BASE has to be the base node +(not a pointer to it). N has to be the pointer to the node to be removed +from the list. NAME is the list name. */ + +#define UT_LIST_REMOVE(NAME, BASE, N) \ +do { \ + ut_ad(N); \ + ut_a((BASE).count > 0); \ + ((BASE).count)--; \ + if (((N)->NAME).next != NULL) { \ + ((((N)->NAME).next)->NAME).prev = ((N)->NAME).prev; \ + } else { \ + (BASE).end = ((N)->NAME).prev; \ + } \ + if (((N)->NAME).prev != NULL) { \ + ((((N)->NAME).prev)->NAME).next = ((N)->NAME).next; \ + } else { \ + (BASE).start = ((N)->NAME).next; \ + } \ + UT_LIST_REMOVE_CLEAR(NAME, N); \ +} while (0) + +/************************************************************************ +Gets the next node in a two-way list. NAME is the name of the list +and N is pointer to a node. */ + +#define UT_LIST_GET_NEXT(NAME, N)\ + (((N)->NAME).next) + +/************************************************************************ +Gets the previous node in a two-way list. NAME is the name of the list +and N is pointer to a node. */ + +#define UT_LIST_GET_PREV(NAME, N)\ + (((N)->NAME).prev) + +/************************************************************************ +Alternative macro to get the number of nodes in a two-way list, i.e., +its length. BASE is the base node (not a pointer to it). */ + +#define UT_LIST_GET_LEN(BASE)\ + (BASE).count + +/************************************************************************ +Gets the first node in a two-way list, or returns NULL, +if the list is empty. BASE is the base node (not a pointer to it). */ + +#define UT_LIST_GET_FIRST(BASE)\ + (BASE).start + +/************************************************************************ +Gets the last node in a two-way list, or returns NULL, +if the list is empty. BASE is the base node (not a pointer to it). */ + +#define UT_LIST_GET_LAST(BASE)\ + (BASE).end + +/************************************************************************ +Checks the consistency of a two-way list. NAME is the name of the list, +TYPE is the node type, and BASE is the base node (not a pointer to it). */ + +#define UT_LIST_VALIDATE(NAME, TYPE, BASE)\ +{\ + ulint ut_list_i_313;\ + TYPE * ut_list_node_313;\ +\ + ut_list_node_313 = (BASE).start;\ +\ + for (ut_list_i_313 = 0; ut_list_i_313 < (BASE).count;\ + ut_list_i_313++) {\ + ut_a(ut_list_node_313);\ + ut_list_node_313 = (ut_list_node_313->NAME).next;\ + }\ +\ + ut_a(ut_list_node_313 == NULL);\ +\ + ut_list_node_313 = (BASE).end;\ +\ + for (ut_list_i_313 = 0; ut_list_i_313 < (BASE).count;\ + ut_list_i_313++) {\ + ut_a(ut_list_node_313);\ + ut_list_node_313 = (ut_list_node_313->NAME).prev;\ + }\ +\ + ut_a(ut_list_node_313 == NULL);\ +}\ + + +#endif + === added file 'storage/xtradb/include/ut0mem.h' --- a/storage/xtradb/include/ut0mem.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/ut0mem.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,271 @@ +/***************************************************************************** + +Copyright (c) 1994, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/*********************************************************************** +Memory primitives + +Created 5/30/1994 Heikki Tuuri +************************************************************************/ + +#ifndef ut0mem_h +#define ut0mem_h + +#include "univ.i" +#include "os0sync.h" +#include <string.h> + +/* The total amount of memory currently allocated from the operating +system with os_mem_alloc_large() or malloc(). Does not count malloc() +if srv_use_sys_malloc is set. Protected by ut_list_mutex. */ +extern ulint ut_total_allocated_memory; + +/* Mutex protecting ut_total_allocated_memory and ut_mem_block_list */ +extern os_fast_mutex_t ut_list_mutex; + +UNIV_INLINE +void* +ut_memcpy(void* dest, const void* sour, ulint n); + +UNIV_INLINE +void* +ut_memmove(void* dest, const void* sour, ulint n); + +UNIV_INLINE +int +ut_memcmp(const void* str1, const void* str2, ulint n); + +/************************************************************************** +Initializes the mem block list at database startup. */ +UNIV_INTERN +void +ut_mem_init(void); +/*=============*/ + +/************************************************************************** +Allocates memory. Sets it also to zero if UNIV_SET_MEM_TO_ZERO is +defined and set_to_zero is TRUE. */ +UNIV_INTERN +void* +ut_malloc_low( +/*==========*/ + /* out, own: allocated memory */ + ulint n, /* in: number of bytes to allocate */ + ibool set_to_zero, /* in: TRUE if allocated memory + should be set to zero if + UNIV_SET_MEM_TO_ZERO is defined */ + ibool assert_on_error); /* in: if TRUE, we crash mysqld if + the memory cannot be allocated */ +/************************************************************************** +Allocates memory. Sets it also to zero if UNIV_SET_MEM_TO_ZERO is +defined. */ +UNIV_INTERN +void* +ut_malloc( +/*======*/ + /* out, own: allocated memory */ + ulint n); /* in: number of bytes to allocate */ +/************************************************************************** +Tests if malloc of n bytes would succeed. ut_malloc() asserts if memory runs +out. It cannot be used if we want to return an error message. Prints to +stderr a message if fails. */ +UNIV_INTERN +ibool +ut_test_malloc( +/*===========*/ + /* out: TRUE if succeeded */ + ulint n); /* in: try to allocate this many bytes */ +/************************************************************************** +Frees a memory block allocated with ut_malloc. */ +UNIV_INTERN +void +ut_free( +/*====*/ + void* ptr); /* in, own: memory block */ +/************************************************************************** +Implements realloc. This is needed by /pars/lexyy.c. Otherwise, you should not +use this function because the allocation functions in mem0mem.h are the +recommended ones in InnoDB. + +man realloc in Linux, 2004: + + realloc() changes the size of the memory block pointed to + by ptr to size bytes. The contents will be unchanged to + the minimum of the old and new sizes; newly allocated mem� + ory will be uninitialized. If ptr is NULL, the call is + equivalent to malloc(size); if size is equal to zero, the + call is equivalent to free(ptr). Unless ptr is NULL, it + must have been returned by an earlier call to malloc(), + calloc() or realloc(). + +RETURN VALUE + realloc() returns a pointer to the newly allocated memory, + which is suitably aligned for any kind of variable and may + be different from ptr, or NULL if the request fails. If + size was equal to 0, either NULL or a pointer suitable to + be passed to free() is returned. If realloc() fails the + original block is left untouched - it is not freed or + moved. */ +UNIV_INTERN +void* +ut_realloc( +/*=======*/ + /* out, own: pointer to new mem block or NULL */ + void* ptr, /* in: pointer to old block or NULL */ + ulint size); /* in: desired size */ +/************************************************************************** +Frees in shutdown all allocated memory not freed yet. */ +UNIV_INTERN +void +ut_free_all_mem(void); +/*=================*/ + +UNIV_INLINE +char* +ut_strcpy(char* dest, const char* sour); + +UNIV_INLINE +ulint +ut_strlen(const char* str); + +UNIV_INLINE +int +ut_strcmp(const char* str1, const char* str2); + +/************************************************************************** +Copies up to size - 1 characters from the NUL-terminated string src to +dst, NUL-terminating the result. Returns strlen(src), so truncation +occurred if the return value >= size. */ +UNIV_INTERN +ulint +ut_strlcpy( +/*=======*/ + /* out: strlen(src) */ + char* dst, /* in: destination buffer */ + const char* src, /* in: source buffer */ + ulint size); /* in: size of destination buffer */ + +/************************************************************************** +Like ut_strlcpy, but if src doesn't fit in dst completely, copies the last +(size - 1) bytes of src, not the first. */ +UNIV_INTERN +ulint +ut_strlcpy_rev( +/*===========*/ + /* out: strlen(src) */ + char* dst, /* in: destination buffer */ + const char* src, /* in: source buffer */ + ulint size); /* in: size of destination buffer */ + +/************************************************************************** +Compute strlen(ut_strcpyq(str, q)). */ +UNIV_INLINE +ulint +ut_strlenq( +/*=======*/ + /* out: length of the string when quoted */ + const char* str, /* in: null-terminated string */ + char q); /* in: the quote character */ + +/************************************************************************** +Make a quoted copy of a NUL-terminated string. Leading and trailing +quotes will not be included; only embedded quotes will be escaped. +See also ut_strlenq() and ut_memcpyq(). */ +UNIV_INTERN +char* +ut_strcpyq( +/*=======*/ + /* out: pointer to end of dest */ + char* dest, /* in: output buffer */ + char q, /* in: the quote character */ + const char* src); /* in: null-terminated string */ + +/************************************************************************** +Make a quoted copy of a fixed-length string. Leading and trailing +quotes will not be included; only embedded quotes will be escaped. +See also ut_strlenq() and ut_strcpyq(). */ +UNIV_INTERN +char* +ut_memcpyq( +/*=======*/ + /* out: pointer to end of dest */ + char* dest, /* in: output buffer */ + char q, /* in: the quote character */ + const char* src, /* in: string to be quoted */ + ulint len); /* in: length of src */ + +/************************************************************************** +Return the number of times s2 occurs in s1. Overlapping instances of s2 +are only counted once. */ +UNIV_INTERN +ulint +ut_strcount( +/*========*/ + /* out: the number of times s2 occurs in s1 */ + const char* s1, /* in: string to search in */ + const char* s2); /* in: string to search for */ + +/************************************************************************** +Replace every occurrence of s1 in str with s2. Overlapping instances of s1 +are only replaced once. */ +UNIV_INTERN +char* +ut_strreplace( +/*==========*/ + /* out, own: modified string, must be + freed with mem_free() */ + const char* str, /* in: string to operate on */ + const char* s1, /* in: string to replace */ + const char* s2); /* in: string to replace s1 with */ + +/************************************************************************** +Converts a raw binary data to a '\0'-terminated hex string. The output is +truncated if there is not enough space in "hex", make sure "hex_size" is at +least (2 * raw_size + 1) if you do not want this to happen. Returns the +actual number of characters written to "hex" (including the '\0'). */ +UNIV_INLINE +ulint +ut_raw_to_hex( +/*==========*/ + /* out: number of chars written */ + const void* raw, /* in: raw data */ + ulint raw_size, /* in: "raw" length in bytes */ + char* hex, /* out: hex string */ + ulint hex_size); /* in: "hex" size in bytes */ + +/*********************************************************************** +Adds single quotes to the start and end of string and escapes any quotes +by doubling them. Returns the number of bytes that were written to "buf" +(including the terminating '\0'). If buf_size is too small then the +trailing bytes from "str" are discarded. */ +UNIV_INLINE +ulint +ut_str_sql_format( +/*==============*/ + /* out: number of bytes + that were written */ + const char* str, /* in: string */ + ulint str_len, /* in: string length in bytes */ + char* buf, /* out: output buffer */ + ulint buf_size); /* in: output buffer size + in bytes */ + +#ifndef UNIV_NONINL +#include "ut0mem.ic" +#endif + +#endif === added file 'storage/xtradb/include/ut0mem.ic' --- a/storage/xtradb/include/ut0mem.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/ut0mem.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,308 @@ +/***************************************************************************** + +Copyright (c) 1994, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/*********************************************************************** +Memory primitives + +Created 5/30/1994 Heikki Tuuri +************************************************************************/ + +#include "ut0byte.h" +#include "mach0data.h" + +UNIV_INLINE +void* +ut_memcpy(void* dest, const void* sour, ulint n) +{ + return(memcpy(dest, sour, n)); +} + +UNIV_INLINE +void* +ut_memmove(void* dest, const void* sour, ulint n) +{ + return(memmove(dest, sour, n)); +} + +UNIV_INLINE +int +ut_memcmp(const void* str1, const void* str2, ulint n) +{ + return(memcmp(str1, str2, n)); +} + +UNIV_INLINE +char* +ut_strcpy(char* dest, const char* sour) +{ + return(strcpy(dest, sour)); +} + +UNIV_INLINE +ulint +ut_strlen(const char* str) +{ + return(strlen(str)); +} + +UNIV_INLINE +int +ut_strcmp(const char* str1, const char* str2) +{ + return(strcmp(str1, str2)); +} + +/************************************************************************** +Compute strlen(ut_strcpyq(str, q)). */ +UNIV_INLINE +ulint +ut_strlenq( +/*=======*/ + /* out: length of the string when quoted */ + const char* str, /* in: null-terminated string */ + char q) /* in: the quote character */ +{ + ulint len; + + for (len = 0; *str; len++, str++) { + if (*str == q) { + len++; + } + } + + return(len); +} + +/************************************************************************** +Converts a raw binary data to a '\0'-terminated hex string. The output is +truncated if there is not enough space in "hex", make sure "hex_size" is at +least (2 * raw_size + 1) if you do not want this to happen. Returns the +actual number of characters written to "hex" (including the '\0'). */ +UNIV_INLINE +ulint +ut_raw_to_hex( +/*==========*/ + /* out: number of chars written */ + const void* raw, /* in: raw data */ + ulint raw_size, /* in: "raw" length in bytes */ + char* hex, /* out: hex string */ + ulint hex_size) /* in: "hex" size in bytes */ +{ + +#ifdef WORDS_BIGENDIAN + +#define MK_UINT16(a, b) (((uint16) (a)) << 8 | (uint16) (b)) + +#define UINT16_GET_A(u) ((unsigned char) ((u) >> 8)) +#define UINT16_GET_B(u) ((unsigned char) ((u) & 0xFF)) + +#else /* WORDS_BIGENDIAN */ + +#define MK_UINT16(a, b) (((uint16) (b)) << 8 | (uint16) (a)) + +#define UINT16_GET_A(u) ((unsigned char) ((u) & 0xFF)) +#define UINT16_GET_B(u) ((unsigned char) ((u) >> 8)) + +#endif /* WORDS_BIGENDIAN */ + +#define MK_ALL_UINT16_WITH_A(a) \ + MK_UINT16(a, '0'), \ + MK_UINT16(a, '1'), \ + MK_UINT16(a, '2'), \ + MK_UINT16(a, '3'), \ + MK_UINT16(a, '4'), \ + MK_UINT16(a, '5'), \ + MK_UINT16(a, '6'), \ + MK_UINT16(a, '7'), \ + MK_UINT16(a, '8'), \ + MK_UINT16(a, '9'), \ + MK_UINT16(a, 'A'), \ + MK_UINT16(a, 'B'), \ + MK_UINT16(a, 'C'), \ + MK_UINT16(a, 'D'), \ + MK_UINT16(a, 'E'), \ + MK_UINT16(a, 'F') + + static const uint16 hex_map[256] = { + MK_ALL_UINT16_WITH_A('0'), + MK_ALL_UINT16_WITH_A('1'), + MK_ALL_UINT16_WITH_A('2'), + MK_ALL_UINT16_WITH_A('3'), + MK_ALL_UINT16_WITH_A('4'), + MK_ALL_UINT16_WITH_A('5'), + MK_ALL_UINT16_WITH_A('6'), + MK_ALL_UINT16_WITH_A('7'), + MK_ALL_UINT16_WITH_A('8'), + MK_ALL_UINT16_WITH_A('9'), + MK_ALL_UINT16_WITH_A('A'), + MK_ALL_UINT16_WITH_A('B'), + MK_ALL_UINT16_WITH_A('C'), + MK_ALL_UINT16_WITH_A('D'), + MK_ALL_UINT16_WITH_A('E'), + MK_ALL_UINT16_WITH_A('F') + }; + const unsigned char* rawc; + ulint read_bytes; + ulint write_bytes; + ulint i; + + rawc = (const unsigned char*) raw; + + if (hex_size == 0) { + + return(0); + } + + if (hex_size <= 2 * raw_size) { + + read_bytes = hex_size / 2; + write_bytes = hex_size; + } else { + + read_bytes = raw_size; + write_bytes = 2 * raw_size + 1; + } + +#define LOOP_READ_BYTES(ASSIGN) \ + for (i = 0; i < read_bytes; i++) { \ + ASSIGN; \ + hex += 2; \ + rawc++; \ + } + + if (ut_align_offset(hex, 2) == 0) { + + LOOP_READ_BYTES( + *(uint16*) hex = hex_map[*rawc] + ); + } else { + + LOOP_READ_BYTES( + *hex = UINT16_GET_A(hex_map[*rawc]); + *(hex + 1) = UINT16_GET_B(hex_map[*rawc]) + ); + } + + if (hex_size <= 2 * raw_size && hex_size % 2 == 0) { + + hex--; + } + + *hex = '\0'; + + return(write_bytes); +} + +/*********************************************************************** +Adds single quotes to the start and end of string and escapes any quotes +by doubling them. Returns the number of bytes that were written to "buf" +(including the terminating '\0'). If buf_size is too small then the +trailing bytes from "str" are discarded. */ +UNIV_INLINE +ulint +ut_str_sql_format( +/*==============*/ + /* out: number of bytes + that were written */ + const char* str, /* in: string */ + ulint str_len, /* in: string length in bytes */ + char* buf, /* out: output buffer */ + ulint buf_size) /* in: output buffer size + in bytes */ +{ + ulint str_i; + ulint buf_i; + + buf_i = 0; + + switch (buf_size) { + case 3: + + if (str_len == 0) { + + buf[buf_i] = '\''; + buf_i++; + buf[buf_i] = '\''; + buf_i++; + } + /* FALLTHROUGH */ + case 2: + case 1: + + buf[buf_i] = '\0'; + buf_i++; + /* FALLTHROUGH */ + case 0: + + return(buf_i); + } + + /* buf_size >= 4 */ + + buf[0] = '\''; + buf_i = 1; + + for (str_i = 0; str_i < str_len; str_i++) { + + char ch; + + if (buf_size - buf_i == 2) { + + break; + } + + ch = str[str_i]; + + switch (ch) { + case '\0': + + if (UNIV_UNLIKELY(buf_size - buf_i < 4)) { + + goto func_exit; + } + buf[buf_i] = '\\'; + buf_i++; + buf[buf_i] = '0'; + buf_i++; + break; + case '\'': + case '\\': + + if (UNIV_UNLIKELY(buf_size - buf_i < 4)) { + + goto func_exit; + } + buf[buf_i] = ch; + buf_i++; + /* FALLTHROUGH */ + default: + + buf[buf_i] = ch; + buf_i++; + } + } + +func_exit: + + buf[buf_i] = '\''; + buf_i++; + buf[buf_i] = '\0'; + buf_i++; + + return(buf_i); +} === added file 'storage/xtradb/include/ut0rnd.h' --- a/storage/xtradb/include/ut0rnd.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/ut0rnd.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,142 @@ +/***************************************************************************** + +Copyright (c) 1994, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/********************************************************************** +Random numbers and hashing + +Created 1/20/1994 Heikki Tuuri +***********************************************************************/ + +#ifndef ut0rnd_h +#define ut0rnd_h + +#include "univ.i" + +#include "ut0byte.h" + +/* The 'character code' for end of field or string (used +in folding records */ +#define UT_END_OF_FIELD 257 + +/************************************************************ +This is used to set the random number seed. */ +UNIV_INLINE +void +ut_rnd_set_seed( +/*============*/ + ulint seed); /* in: seed */ +/************************************************************ +The following function generates a series of 'random' ulint integers. */ +UNIV_INLINE +ulint +ut_rnd_gen_next_ulint( +/*==================*/ + /* out: the next 'random' number */ + ulint rnd); /* in: the previous random number value */ +/************************************************************* +The following function generates 'random' ulint integers which +enumerate the value space (let there be N of them) of ulint integers +in a pseudo-random fashion. Note that the same integer is repeated +always after N calls to the generator. */ +UNIV_INLINE +ulint +ut_rnd_gen_ulint(void); +/*==================*/ + /* out: the 'random' number */ +/************************************************************ +Generates a random integer from a given interval. */ +UNIV_INLINE +ulint +ut_rnd_interval( +/*============*/ + /* out: the 'random' number */ + ulint low, /* in: low limit; can generate also this value */ + ulint high); /* in: high limit; can generate also this value */ +/************************************************************* +Generates a random iboolean value. */ +UNIV_INLINE +ibool +ut_rnd_gen_ibool(void); +/*=================*/ + /* out: the random value */ +/*********************************************************** +The following function generates a hash value for a ulint integer +to a hash table of size table_size, which should be a prime or some +random number to work reliably. */ +UNIV_INLINE +ulint +ut_hash_ulint( +/*==========*/ + /* out: hash value */ + ulint key, /* in: value to be hashed */ + ulint table_size); /* in: hash table size */ +/***************************************************************** +Folds a pair of ulints. */ +UNIV_INLINE +ulint +ut_fold_ulint_pair( +/*===============*/ + /* out: folded value */ + ulint n1, /* in: ulint */ + ulint n2) /* in: ulint */ + __attribute__((const)); +/***************************************************************** +Folds a dulint. */ +UNIV_INLINE +ulint +ut_fold_dulint( +/*===========*/ + /* out: folded value */ + dulint d) /* in: dulint */ + __attribute__((const)); +/***************************************************************** +Folds a character string ending in the null character. */ +UNIV_INLINE +ulint +ut_fold_string( +/*===========*/ + /* out: folded value */ + const char* str) /* in: null-terminated string */ + __attribute__((pure)); +/***************************************************************** +Folds a binary string. */ +UNIV_INLINE +ulint +ut_fold_binary( +/*===========*/ + /* out: folded value */ + const byte* str, /* in: string of bytes */ + ulint len) /* in: length */ + __attribute__((pure)); +/*************************************************************** +Looks for a prime number slightly greater than the given argument. +The prime is chosen so that it is not near any power of 2. */ +UNIV_INTERN +ulint +ut_find_prime( +/*==========*/ + /* out: prime */ + ulint n) /* in: positive number > 100 */ + __attribute__((const)); + + +#ifndef UNIV_NONINL +#include "ut0rnd.ic" +#endif + +#endif === added file 'storage/xtradb/include/ut0rnd.ic' --- a/storage/xtradb/include/ut0rnd.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/ut0rnd.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,228 @@ +/***************************************************************************** + +Copyright (c) 1994, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************************** +Random numbers and hashing + +Created 5/30/1994 Heikki Tuuri +*******************************************************************/ + +#define UT_HASH_RANDOM_MASK 1463735687 +#define UT_HASH_RANDOM_MASK2 1653893711 +#define UT_RND1 151117737 +#define UT_RND2 119785373 +#define UT_RND3 85689495 +#define UT_RND4 76595339 +#define UT_SUM_RND2 98781234 +#define UT_SUM_RND3 126792457 +#define UT_SUM_RND4 63498502 +#define UT_XOR_RND1 187678878 +#define UT_XOR_RND2 143537923 + +extern ulint ut_rnd_ulint_counter; + +/************************************************************ +This is used to set the random number seed. */ +UNIV_INLINE +void +ut_rnd_set_seed( +/*============*/ + ulint seed) /* in: seed */ +{ + ut_rnd_ulint_counter = seed; +} + +/************************************************************ +The following function generates a series of 'random' ulint integers. */ +UNIV_INLINE +ulint +ut_rnd_gen_next_ulint( +/*==================*/ + /* out: the next 'random' number */ + ulint rnd) /* in: the previous random number value */ +{ + ulint n_bits; + + n_bits = 8 * sizeof(ulint); + + rnd = UT_RND2 * rnd + UT_SUM_RND3; + rnd = UT_XOR_RND1 ^ rnd; + rnd = (rnd << 20) + (rnd >> (n_bits - 20)); + rnd = UT_RND3 * rnd + UT_SUM_RND4; + rnd = UT_XOR_RND2 ^ rnd; + rnd = (rnd << 20) + (rnd >> (n_bits - 20)); + rnd = UT_RND1 * rnd + UT_SUM_RND2; + + return(rnd); +} + +/************************************************************ +The following function generates 'random' ulint integers which +enumerate the value space of ulint integers in a pseudo random +fashion. Note that the same integer is repeated always after +2 to power 32 calls to the generator (if ulint is 32-bit). */ +UNIV_INLINE +ulint +ut_rnd_gen_ulint(void) +/*==================*/ + /* out: the 'random' number */ +{ + ulint rnd; + ulint n_bits; + + n_bits = 8 * sizeof(ulint); + + ut_rnd_ulint_counter = UT_RND1 * ut_rnd_ulint_counter + UT_RND2; + + rnd = ut_rnd_gen_next_ulint(ut_rnd_ulint_counter); + + return(rnd); +} + +/************************************************************ +Generates a random integer from a given interval. */ +UNIV_INLINE +ulint +ut_rnd_interval( +/*============*/ + /* out: the 'random' number */ + ulint low, /* in: low limit; can generate also this value */ + ulint high) /* in: high limit; can generate also this value */ +{ + ulint rnd; + + ut_ad(high >= low); + + if (low == high) { + + return(low); + } + + rnd = ut_rnd_gen_ulint(); + + return(low + (rnd % (high - low + 1))); +} + +/************************************************************* +Generates a random iboolean value. */ +UNIV_INLINE +ibool +ut_rnd_gen_ibool(void) +/*=================*/ + /* out: the random value */ +{ + ulint x; + + x = ut_rnd_gen_ulint(); + + if (((x >> 20) + (x >> 15)) & 1) { + + return(TRUE); + } + + return(FALSE); +} + +/*********************************************************** +The following function generates a hash value for a ulint integer +to a hash table of size table_size, which should be a prime +or some random number for the hash table to work reliably. */ +UNIV_INLINE +ulint +ut_hash_ulint( +/*==========*/ + /* out: hash value */ + ulint key, /* in: value to be hashed */ + ulint table_size) /* in: hash table size */ +{ + key = key ^ UT_HASH_RANDOM_MASK2; + + return(key % table_size); +} + +/***************************************************************** +Folds a pair of ulints. */ +UNIV_INLINE +ulint +ut_fold_ulint_pair( +/*===============*/ + /* out: folded value */ + ulint n1, /* in: ulint */ + ulint n2) /* in: ulint */ +{ + return(((((n1 ^ n2 ^ UT_HASH_RANDOM_MASK2) << 8) + n1) + ^ UT_HASH_RANDOM_MASK) + n2); +} + +/***************************************************************** +Folds a dulint. */ +UNIV_INLINE +ulint +ut_fold_dulint( +/*===========*/ + /* out: folded value */ + dulint d) /* in: dulint */ +{ + return(ut_fold_ulint_pair(ut_dulint_get_low(d), + ut_dulint_get_high(d))); +} + +/***************************************************************** +Folds a character string ending in the null character. */ +UNIV_INLINE +ulint +ut_fold_string( +/*===========*/ + /* out: folded value */ + const char* str) /* in: null-terminated string */ +{ + ulint fold = 0; + + ut_ad(str); + + while (*str != '\0') { + fold = ut_fold_ulint_pair(fold, (ulint)(*str)); + str++; + } + + return(fold); +} + +/***************************************************************** +Folds a binary string. */ +UNIV_INLINE +ulint +ut_fold_binary( +/*===========*/ + /* out: folded value */ + const byte* str, /* in: string of bytes */ + ulint len) /* in: length */ +{ + const byte* str_end = str + len; + ulint fold = 0; + + ut_ad(str || !len); + + while (str < str_end) { + fold = ut_fold_ulint_pair(fold, (ulint)(*str)); + + str++; + } + + return(fold); +} === added file 'storage/xtradb/include/ut0sort.h' --- a/storage/xtradb/include/ut0sort.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/ut0sort.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,105 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/********************************************************************** +Sort utility + +Created 11/9/1995 Heikki Tuuri +***********************************************************************/ + +#ifndef ut0sort_h +#define ut0sort_h + +#include "univ.i" + +/* This module gives a macro definition of the body of +a standard sort function for an array of elements of any +type. The comparison function is given as a parameter to +the macro. The sort algorithm is mergesort which has logarithmic +worst case. +*/ + +/*********************************************************************** +This macro expands to the body of a standard sort function. +The sort function uses mergesort and must be defined separately +for each type of array. +Also the comparison function has to be defined individually +for each array cell type. SORT_FUN is the sort function name. +The function takes the array to be sorted (ARR), +the array of auxiliary space (AUX_ARR) of same size, +and the low (LOW), inclusive, and high (HIGH), noninclusive, +limits for the sort interval as arguments. +CMP_FUN is the comparison function name. It takes as arguments +two elements from the array and returns 1, if the first is bigger, +0 if equal, and -1 if the second bigger. */ + +#define UT_SORT_FUNCTION_BODY(SORT_FUN, ARR, AUX_ARR, LOW, HIGH, CMP_FUN)\ +{\ + ulint ut_sort_mid77;\ + ulint ut_sort_i77;\ + ulint ut_sort_low77;\ + ulint ut_sort_high77;\ +\ + ut_ad((LOW) < (HIGH));\ + ut_ad(ARR);\ + ut_ad(AUX_ARR);\ +\ + if ((LOW) == (HIGH) - 1) {\ + return;\ + } else if ((LOW) == (HIGH) - 2) {\ + if (CMP_FUN((ARR)[LOW], (ARR)[(HIGH) - 1]) > 0) {\ + (AUX_ARR)[LOW] = (ARR)[LOW];\ + (ARR)[LOW] = (ARR)[(HIGH) - 1];\ + (ARR)[(HIGH) - 1] = (AUX_ARR)[LOW];\ + }\ + return;\ + }\ +\ + ut_sort_mid77 = ((LOW) + (HIGH)) / 2;\ +\ + SORT_FUN((ARR), (AUX_ARR), (LOW), ut_sort_mid77);\ + SORT_FUN((ARR), (AUX_ARR), ut_sort_mid77, (HIGH));\ +\ + ut_sort_low77 = (LOW);\ + ut_sort_high77 = ut_sort_mid77;\ +\ + for (ut_sort_i77 = (LOW); ut_sort_i77 < (HIGH); ut_sort_i77++) {\ +\ + if (ut_sort_low77 >= ut_sort_mid77) {\ + (AUX_ARR)[ut_sort_i77] = (ARR)[ut_sort_high77];\ + ut_sort_high77++;\ + } else if (ut_sort_high77 >= (HIGH)) {\ + (AUX_ARR)[ut_sort_i77] = (ARR)[ut_sort_low77];\ + ut_sort_low77++;\ + } else if (CMP_FUN((ARR)[ut_sort_low77],\ + (ARR)[ut_sort_high77]) > 0) {\ + (AUX_ARR)[ut_sort_i77] = (ARR)[ut_sort_high77];\ + ut_sort_high77++;\ + } else {\ + (AUX_ARR)[ut_sort_i77] = (ARR)[ut_sort_low77];\ + ut_sort_low77++;\ + }\ + }\ +\ + memcpy((void*) ((ARR) + (LOW)), (AUX_ARR) + (LOW),\ + ((HIGH) - (LOW)) * sizeof *(ARR));\ +}\ + + +#endif + === added file 'storage/xtradb/include/ut0ut.h' --- a/storage/xtradb/include/ut0ut.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/ut0ut.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,328 @@ +/***************************************************************************** + +Copyright (c) 1994, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/********************************************************************** +Various utilities + +Created 1/20/1994 Heikki Tuuri +***********************************************************************/ + +#ifndef ut0ut_h +#define ut0ut_h + +#include "univ.i" +#include <time.h> +#ifndef MYSQL_SERVER +#include <ctype.h> +#endif + +#define TEMP_INDEX_PREFIX '\377' /* Index name prefix in fast index + creation */ + +typedef time_t ib_time_t; + +/************************************************************************* +Delays execution for at most max_wait_us microseconds or returns earlier +if cond becomes true; cond is evaluated every 2 ms. */ + +#define UT_WAIT_FOR(cond, max_wait_us) \ +do { \ + ullint start_us; \ + start_us = ut_time_us(NULL); \ + while (!(cond) \ + && ut_time_us(NULL) - start_us < (max_wait_us)) {\ + \ + os_thread_sleep(2000 /* 2 ms */); \ + } \ +} while (0) + +/************************************************************ +Gets the high 32 bits in a ulint. That is makes a shift >> 32, +but since there seem to be compiler bugs in both gcc and Visual C++, +we do this by a special conversion. */ +UNIV_INTERN +ulint +ut_get_high32( +/*==========*/ + /* out: a >> 32 */ + ulint a); /* in: ulint */ +/********************************************************** +Calculates the minimum of two ulints. */ +UNIV_INLINE +ulint +ut_min( +/*===*/ + /* out: minimum */ + ulint n1, /* in: first number */ + ulint n2); /* in: second number */ +/********************************************************** +Calculates the maximum of two ulints. */ +UNIV_INLINE +ulint +ut_max( +/*===*/ + /* out: maximum */ + ulint n1, /* in: first number */ + ulint n2); /* in: second number */ +/******************************************************************** +Calculates minimum of two ulint-pairs. */ +UNIV_INLINE +void +ut_pair_min( +/*========*/ + ulint* a, /* out: more significant part of minimum */ + ulint* b, /* out: less significant part of minimum */ + ulint a1, /* in: more significant part of first pair */ + ulint b1, /* in: less significant part of first pair */ + ulint a2, /* in: more significant part of second pair */ + ulint b2); /* in: less significant part of second pair */ +/********************************************************** +Compares two ulints. */ +UNIV_INLINE +int +ut_ulint_cmp( +/*=========*/ + /* out: 1 if a > b, 0 if a == b, -1 if a < b */ + ulint a, /* in: ulint */ + ulint b); /* in: ulint */ +/*********************************************************** +Compares two pairs of ulints. */ +UNIV_INLINE +int +ut_pair_cmp( +/*========*/ + /* out: -1 if a < b, 0 if a == b, + 1 if a > b */ + ulint a1, /* in: more significant part of first pair */ + ulint a2, /* in: less significant part of first pair */ + ulint b1, /* in: more significant part of second pair */ + ulint b2); /* in: less significant part of second pair */ +/***************************************************************** +Determines if a number is zero or a power of two. */ +#define ut_is_2pow(n) UNIV_LIKELY(!((n) & ((n) - 1))) +/***************************************************************** +Calculates fast the remainder of n/m when m is a power of two. */ +#define ut_2pow_remainder(n, m) ((n) & ((m) - 1)) +/***************************************************************** +Calculates the biggest multiple of m that is not bigger than n +when m is a power of two. In other words, rounds n down to m * k. */ +#define ut_2pow_round(n, m) ((n) & ~((m) - 1)) +#define ut_calc_align_down(n, m) ut_2pow_round(n, m) +/************************************************************ +Calculates the smallest multiple of m that is not smaller than n +when m is a power of two. In other words, rounds n up to m * k. */ +#define ut_calc_align(n, m) (((n) + ((m) - 1)) & ~((m) - 1)) +/***************************************************************** +Calculates fast the 2-logarithm of a number, rounded upward to an +integer. */ +UNIV_INLINE +ulint +ut_2_log( +/*=====*/ + /* out: logarithm in the base 2, rounded upward */ + ulint n); /* in: number */ +/***************************************************************** +Calculates 2 to power n. */ +UNIV_INLINE +ulint +ut_2_exp( +/*=====*/ + /* out: 2 to power n */ + ulint n); /* in: number */ +/***************************************************************** +Calculates fast the number rounded up to the nearest power of 2. */ +UNIV_INTERN +ulint +ut_2_power_up( +/*==========*/ + /* out: first power of 2 which is >= n */ + ulint n) /* in: number != 0 */ + __attribute__((const)); + +/* Determine how many bytes (groups of 8 bits) are needed to +store the given number of bits. */ +#define UT_BITS_IN_BYTES(b) (((b) + 7) / 8) + +/************************************************************** +Returns system time. We do not specify the format of the time returned: +the only way to manipulate it is to use the function ut_difftime. */ +UNIV_INTERN +ib_time_t +ut_time(void); +/*=========*/ +/************************************************************** +Returns system time. +Upon successful completion, the value 0 is returned; otherwise the +value -1 is returned and the global variable errno is set to indicate the +error. */ +UNIV_INTERN +int +ut_usectime( +/*========*/ + /* out: 0 on success, -1 otherwise */ + ulint* sec, /* out: seconds since the Epoch */ + ulint* ms); /* out: microseconds since the Epoch+*sec */ + +/************************************************************** +Returns the number of microseconds since epoch. Similar to +time(3), the return value is also stored in *tloc, provided +that tloc is non-NULL. */ +UNIV_INTERN +ullint +ut_time_us( +/*=======*/ + /* out: us since epoch */ + ullint* tloc); /* out: us since epoch, if non-NULL */ + +/************************************************************** +Returns the difference of two times in seconds. */ +UNIV_INTERN +double +ut_difftime( +/*========*/ + /* out: time2 - time1 expressed in seconds */ + ib_time_t time2, /* in: time */ + ib_time_t time1); /* in: time */ +/************************************************************** +Prints a timestamp to a file. */ +UNIV_INTERN +void +ut_print_timestamp( +/*===============*/ + FILE* file); /* in: file where to print */ +/************************************************************** +Sprintfs a timestamp to a buffer, 13..14 chars plus terminating NUL. */ +UNIV_INTERN +void +ut_sprintf_timestamp( +/*=================*/ + char* buf); /* in: buffer where to sprintf */ +#ifdef UNIV_HOTBACKUP +/************************************************************** +Sprintfs a timestamp to a buffer with no spaces and with ':' characters +replaced by '_'. */ +UNIV_INTERN +void +ut_sprintf_timestamp_without_extra_chars( +/*=====================================*/ + char* buf); /* in: buffer where to sprintf */ +/************************************************************** +Returns current year, month, day. */ +UNIV_INTERN +void +ut_get_year_month_day( +/*==================*/ + ulint* year, /* out: current year */ + ulint* month, /* out: month */ + ulint* day); /* out: day */ +#endif /* UNIV_HOTBACKUP */ +/***************************************************************** +Runs an idle loop on CPU. The argument gives the desired delay +in microseconds on 100 MHz Pentium + Visual C++. */ +UNIV_INTERN +ulint +ut_delay( +/*=====*/ + /* out: dummy value */ + ulint delay); /* in: delay in microseconds on 100 MHz Pentium */ +/***************************************************************** +Prints the contents of a memory buffer in hex and ascii. */ +UNIV_INTERN +void +ut_print_buf( +/*=========*/ + FILE* file, /* in: file where to print */ + const void* buf, /* in: memory buffer */ + ulint len); /* in: length of the buffer */ + +/************************************************************************** +Outputs a NUL-terminated file name, quoted with apostrophes. */ +UNIV_INTERN +void +ut_print_filename( +/*==============*/ + FILE* f, /* in: output stream */ + const char* name); /* in: name to print */ + +/* Forward declaration of transaction handle */ +struct trx_struct; + +/************************************************************************** +Outputs a fixed-length string, quoted as an SQL identifier. +If the string contains a slash '/', the string will be +output as two identifiers separated by a period (.), +as in SQL database_name.identifier. */ +UNIV_INTERN +void +ut_print_name( +/*==========*/ + FILE* f, /* in: output stream */ + struct trx_struct*trx, /* in: transaction */ + ibool table_id,/* in: TRUE=print a table name, + FALSE=print other identifier */ + const char* name); /* in: name to print */ + +/************************************************************************** +Outputs a fixed-length string, quoted as an SQL identifier. +If the string contains a slash '/', the string will be +output as two identifiers separated by a period (.), +as in SQL database_name.identifier. */ +UNIV_INTERN +void +ut_print_namel( +/*===========*/ + FILE* f, /* in: output stream */ + struct trx_struct*trx, /* in: transaction (NULL=no quotes) */ + ibool table_id,/* in: TRUE=print a table name, + FALSE=print other identifier */ + const char* name, /* in: name to print */ + ulint namelen);/* in: length of name */ + +/************************************************************************** +Catenate files. */ +UNIV_INTERN +void +ut_copy_file( +/*=========*/ + FILE* dest, /* in: output file */ + FILE* src); /* in: input file to be appended to output */ + +/************************************************************************** +snprintf(). */ + +#ifdef __WIN__ +int +ut_snprintf( + /* out: number of characters that would + have been printed if the size were + unlimited, not including the terminating + '\0'. */ + char* str, /* out: string */ + size_t size, /* in: str size */ + const char* fmt, /* in: format */ + ...); /* in: format values */ +#else +#define ut_snprintf snprintf +#endif /* __WIN__ */ + +#ifndef UNIV_NONINL +#include "ut0ut.ic" +#endif + +#endif + === added file 'storage/xtradb/include/ut0ut.ic' --- a/storage/xtradb/include/ut0ut.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/ut0ut.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,161 @@ +/***************************************************************************** + +Copyright (c) 1994, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************************** +Various utilities + +Created 5/30/1994 Heikki Tuuri +*******************************************************************/ + +/********************************************************** +Calculates the minimum of two ulints. */ +UNIV_INLINE +ulint +ut_min( +/*===*/ + /* out: minimum */ + ulint n1, /* in: first number */ + ulint n2) /* in: second number */ +{ + return((n1 <= n2) ? n1 : n2); +} + +/********************************************************** +Calculates the maximum of two ulints. */ +UNIV_INLINE +ulint +ut_max( +/*===*/ + /* out: maximum */ + ulint n1, /* in: first number */ + ulint n2) /* in: second number */ +{ + return((n1 <= n2) ? n2 : n1); +} + +/******************************************************************** +Calculates minimum of two ulint-pairs. */ +UNIV_INLINE +void +ut_pair_min( +/*========*/ + ulint* a, /* out: more significant part of minimum */ + ulint* b, /* out: less significant part of minimum */ + ulint a1, /* in: more significant part of first pair */ + ulint b1, /* in: less significant part of first pair */ + ulint a2, /* in: more significant part of second pair */ + ulint b2) /* in: less significant part of second pair */ +{ + if (a1 == a2) { + *a = a1; + *b = ut_min(b1, b2); + } else if (a1 < a2) { + *a = a1; + *b = b1; + } else { + *a = a2; + *b = b2; + } +} + +/********************************************************** +Compares two ulints. */ +UNIV_INLINE +int +ut_ulint_cmp( +/*=========*/ + /* out: 1 if a > b, 0 if a == b, -1 if a < b */ + ulint a, /* in: ulint */ + ulint b) /* in: ulint */ +{ + if (a < b) { + return(-1); + } else if (a == b) { + return(0); + } else { + return(1); + } +} + +/*********************************************************** +Compares two pairs of ulints. */ +UNIV_INLINE +int +ut_pair_cmp( +/*========*/ + /* out: -1 if a < b, 0 if a == b, 1 if a > b */ + ulint a1, /* in: more significant part of first pair */ + ulint a2, /* in: less significant part of first pair */ + ulint b1, /* in: more significant part of second pair */ + ulint b2) /* in: less significant part of second pair */ +{ + if (a1 > b1) { + return(1); + } else if (a1 < b1) { + return(-1); + } else if (a2 > b2) { + return(1); + } else if (a2 < b2) { + return(-1); + } else { + return(0); + } +} + +/***************************************************************** +Calculates fast the 2-logarithm of a number, rounded upward to an +integer. */ +UNIV_INLINE +ulint +ut_2_log( +/*=====*/ + /* out: logarithm in the base 2, rounded upward */ + ulint n) /* in: number != 0 */ +{ + ulint res; + + res = 0; + + ut_ad(n > 0); + + n = n - 1; + + for (;;) { + n = n / 2; + + if (n == 0) { + break; + } + + res++; + } + + return(res + 1); +} + +/***************************************************************** +Calculates 2 to power n. */ +UNIV_INLINE +ulint +ut_2_exp( +/*=====*/ + /* out: 2 to power n */ + ulint n) /* in: number */ +{ + return((ulint) 1 << n); +} === added file 'storage/xtradb/include/ut0vec.h' --- a/storage/xtradb/include/ut0vec.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/ut0vec.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,117 @@ +/***************************************************************************** + +Copyright (c) 2006, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +#ifndef IB_VECTOR_H +#define IB_VECTOR_H + +#include "univ.i" +#include "mem0mem.h" + +typedef struct ib_vector_struct ib_vector_t; + +/* An automatically resizing vector datatype with the following properties: + + -Contains void* items. + + -The items are owned by the caller. + + -All memory allocation is done through a heap owned by the caller, who is + responsible for freeing it when done with the vector. + + -When the vector is resized, the old memory area is left allocated since it + uses the same heap as the new memory area, so this is best used for + relatively small or short-lived uses. +*/ + +/******************************************************************** +Create a new vector with the given initial size. */ +UNIV_INTERN +ib_vector_t* +ib_vector_create( +/*=============*/ + /* out: vector */ + mem_heap_t* heap, /* in: heap */ + ulint size); /* in: initial size */ + +/******************************************************************** +Push a new element to the vector, increasing its size if necessary. */ +UNIV_INTERN +void +ib_vector_push( +/*===========*/ + ib_vector_t* vec, /* in: vector */ + void* elem); /* in: data element */ + +/******************************************************************** +Get the number of elements in the vector. */ +UNIV_INLINE +ulint +ib_vector_size( +/*===========*/ + /* out: number of elements in vector */ + const ib_vector_t* vec); /* in: vector */ + +/******************************************************************** +Test whether a vector is empty or not. */ +UNIV_INLINE +ibool +ib_vector_is_empty( +/*===============*/ + /* out: TRUE if empty */ + const ib_vector_t* vec); /* in: vector */ + +/******************************************************************** +Get the n'th element. */ +UNIV_INLINE +void* +ib_vector_get( +/*==========*/ + /* out: n'th element */ + ib_vector_t* vec, /* in: vector */ + ulint n); /* in: element index to get */ + +/******************************************************************** +Remove the last element from the vector. */ +UNIV_INLINE +void* +ib_vector_pop( +/*==========*/ + ib_vector_t* vec); /* in: vector */ + +/******************************************************************** +Free the underlying heap of the vector. Note that vec is invalid +after this call. */ +UNIV_INLINE +void +ib_vector_free( +/*===========*/ + ib_vector_t* vec); /* in,own: vector */ + +/* See comment at beginning of file. */ +struct ib_vector_struct { + mem_heap_t* heap; /* heap */ + void** data; /* data elements */ + ulint used; /* number of elements currently used */ + ulint total; /* number of elements allocated */ +}; + +#ifndef UNIV_NONINL +#include "ut0vec.ic" +#endif + +#endif === added file 'storage/xtradb/include/ut0vec.ic' --- a/storage/xtradb/include/ut0vec.ic 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/ut0vec.ic 2009-03-26 06:11:11 +0000 @@ -0,0 +1,88 @@ +/***************************************************************************** + +Copyright (c) 2006, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/******************************************************************** +Get number of elements in vector. */ +UNIV_INLINE +ulint +ib_vector_size( +/*===========*/ + /* out: number of elements in vector */ + const ib_vector_t* vec) /* in: vector */ +{ + return(vec->used); +} + +/******************************************************************** +Get n'th element. */ +UNIV_INLINE +void* +ib_vector_get( +/*==========*/ + /* out: n'th element */ + ib_vector_t* vec, /* in: vector */ + ulint n) /* in: element index to get */ +{ + ut_a(n < vec->used); + + return(vec->data[n]); +} + +/******************************************************************** +Remove the last element from the vector. */ +UNIV_INLINE +void* +ib_vector_pop( +/*==========*/ + /* out: last vector element */ + ib_vector_t* vec) /* in/out: vector */ +{ + void* elem; + + ut_a(vec->used > 0); + --vec->used; + elem = vec->data[vec->used]; + + ut_d(vec->data[vec->used] = NULL); + UNIV_MEM_INVALID(&vec->data[vec->used], sizeof(*vec->data)); + + return(elem); +} + +/******************************************************************** +Free the underlying heap of the vector. Note that vec is invalid +after this call. */ +UNIV_INLINE +void +ib_vector_free( +/*===========*/ + ib_vector_t* vec) /* in, own: vector */ +{ + mem_heap_free(vec->heap); +} + +/******************************************************************** +Test whether a vector is empty or not. */ +UNIV_INLINE +ibool +ib_vector_is_empty( +/*===============*/ /* out: TRUE if empty else FALSE */ + const ib_vector_t* vec) /* in vector to test */ +{ + return(ib_vector_size(vec) == 0); +} === added file 'storage/xtradb/include/ut0wqueue.h' --- a/storage/xtradb/include/ut0wqueue.h 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/include/ut0wqueue.h 2009-03-26 06:11:11 +0000 @@ -0,0 +1,77 @@ +/***************************************************************************** + +Copyright (c) 2006, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/*********************************************************************** +A Work queue. Threads can add work items to the queue and other threads can +wait for work items to be available and take them off the queue for +processing. +************************************************************************/ + +#ifndef IB_WORK_QUEUE_H +#define IB_WORK_QUEUE_H + +#include "ut0list.h" +#include "mem0mem.h" +#include "os0sync.h" +#include "sync0types.h" + +typedef struct ib_wqueue_struct ib_wqueue_t; + +/******************************************************************** +Create a new work queue. */ +UNIV_INTERN +ib_wqueue_t* +ib_wqueue_create(void); +/*===================*/ + /* out: work queue */ + +/******************************************************************** +Free a work queue. */ +UNIV_INTERN +void +ib_wqueue_free( +/*===========*/ + ib_wqueue_t* wq); /* in: work queue */ + +/******************************************************************** +Add a work item to the queue. */ +UNIV_INTERN +void +ib_wqueue_add( +/*==========*/ + ib_wqueue_t* wq, /* in: work queue */ + void* item, /* in: work item */ + mem_heap_t* heap); /* in: memory heap to use for allocating the + list node */ + +/******************************************************************** +Wait for a work item to appear in the queue. */ +UNIV_INTERN +void* +ib_wqueue_wait( + /* out: work item */ + ib_wqueue_t* wq); /* in: work queue */ + +/* Work queue. */ +struct ib_wqueue_struct { + mutex_t mutex; /* mutex protecting everything */ + ib_list_t* items; /* work item list */ + os_event_t event; /* event we use to signal additions to list */ +}; + +#endif === added directory 'storage/xtradb/lock' === added file 'storage/xtradb/lock/lock0iter.c' --- a/storage/xtradb/lock/lock0iter.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/lock/lock0iter.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,113 @@ +/***************************************************************************** + +Copyright (c) 2007, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Lock queue iterator. Can iterate over table and record +lock queues. + +Created July 16, 2007 Vasil Dimov +*******************************************************/ + +#define LOCK_MODULE_IMPLEMENTATION + +#include "univ.i" +#include "lock0iter.h" +#include "lock0lock.h" +#include "lock0priv.h" +#include "ut0dbg.h" +#include "ut0lst.h" +#ifdef UNIV_DEBUG +# include "srv0srv.h" /* kernel_mutex */ +#endif /* UNIV_DEBUG */ + +/*********************************************************************** +Initialize lock queue iterator so that it starts to iterate from +"lock". bit_no specifies the record number within the heap where the +record is stored. It can be undefined (ULINT_UNDEFINED) in two cases: +1. If the lock is a table lock, thus we have a table lock queue; +2. If the lock is a record lock and it is a wait lock. In this case + bit_no is calculated in this function by using + lock_rec_find_set_bit(). There is exactly one bit set in the bitmap + of a wait lock. */ +UNIV_INTERN +void +lock_queue_iterator_reset( +/*======================*/ + lock_queue_iterator_t* iter, /* out: iterator */ + const lock_t* lock, /* in: lock to start from */ + ulint bit_no) /* in: record number in the + heap */ +{ + ut_ad(mutex_own(&kernel_mutex)); + + iter->current_lock = lock; + + if (bit_no != ULINT_UNDEFINED) { + + iter->bit_no = bit_no; + } else { + + switch (lock_get_type_low(lock)) { + case LOCK_TABLE: + iter->bit_no = ULINT_UNDEFINED; + break; + case LOCK_REC: + iter->bit_no = lock_rec_find_set_bit(lock); + ut_a(iter->bit_no != ULINT_UNDEFINED); + break; + default: + ut_error; + } + } +} + +/*********************************************************************** +Gets the previous lock in the lock queue, returns NULL if there are no +more locks (i.e. the current lock is the first one). The iterator is +receded (if not-NULL is returned). */ +UNIV_INTERN +const lock_t* +lock_queue_iterator_get_prev( +/*=========================*/ + /* out: previous lock or NULL */ + lock_queue_iterator_t* iter) /* in/out: iterator */ +{ + const lock_t* prev_lock; + + ut_ad(mutex_own(&kernel_mutex)); + + switch (lock_get_type_low(iter->current_lock)) { + case LOCK_REC: + prev_lock = lock_rec_get_prev( + iter->current_lock, iter->bit_no); + break; + case LOCK_TABLE: + prev_lock = UT_LIST_GET_PREV( + un_member.tab_lock.locks, iter->current_lock); + break; + default: + ut_error; + } + + if (prev_lock != NULL) { + + iter->current_lock = prev_lock; + } + + return(prev_lock); +} === added file 'storage/xtradb/lock/lock0lock.c' --- a/storage/xtradb/lock/lock0lock.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/lock/lock0lock.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,5680 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +The transaction lock system + +Created 5/7/1996 Heikki Tuuri +*******************************************************/ + +#define LOCK_MODULE_IMPLEMENTATION + +#include "lock0lock.h" +#include "lock0priv.h" + +#ifdef UNIV_NONINL +#include "lock0lock.ic" +#include "lock0priv.ic" +#endif + +#include "ha_prototypes.h" +#include "usr0sess.h" +#include "trx0purge.h" +#include "dict0mem.h" +#include "trx0sys.h" + +/* Restricts the length of search we will do in the waits-for +graph of transactions */ +#define LOCK_MAX_N_STEPS_IN_DEADLOCK_CHECK 1000000 + +/* Restricts the recursion depth of the search we will do in the waits-for +graph of transactions */ +#define LOCK_MAX_DEPTH_IN_DEADLOCK_CHECK 200 + +/* When releasing transaction locks, this specifies how often we release +the kernel mutex for a moment to give also others access to it */ + +#define LOCK_RELEASE_KERNEL_INTERVAL 1000 + +/* Safety margin when creating a new record lock: this many extra records +can be inserted to the page without need to create a lock with a bigger +bitmap */ + +#define LOCK_PAGE_BITMAP_MARGIN 64 + +/* An explicit record lock affects both the record and the gap before it. +An implicit x-lock does not affect the gap, it only locks the index +record from read or update. + +If a transaction has modified or inserted an index record, then +it owns an implicit x-lock on the record. On a secondary index record, +a transaction has an implicit x-lock also if it has modified the +clustered index record, the max trx id of the page where the secondary +index record resides is >= trx id of the transaction (or database recovery +is running), and there are no explicit non-gap lock requests on the +secondary index record. + +This complicated definition for a secondary index comes from the +implementation: we want to be able to determine if a secondary index +record has an implicit x-lock, just by looking at the present clustered +index record, not at the historical versions of the record. The +complicated definition can be explained to the user so that there is +nondeterminism in the access path when a query is answered: we may, +or may not, access the clustered index record and thus may, or may not, +bump into an x-lock set there. + +Different transaction can have conflicting locks set on the gap at the +same time. The locks on the gap are purely inhibitive: an insert cannot +be made, or a select cursor may have to wait if a different transaction +has a conflicting lock on the gap. An x-lock on the gap does not give +the right to insert into the gap. + +An explicit lock can be placed on a user record or the supremum record of +a page. The locks on the supremum record are always thought to be of the gap +type, though the gap bit is not set. When we perform an update of a record +where the size of the record changes, we may temporarily store its explicit +locks on the infimum record of the page, though the infimum otherwise never +carries locks. + +A waiting record lock can also be of the gap type. A waiting lock request +can be granted when there is no conflicting mode lock request by another +transaction ahead of it in the explicit lock queue. + +In version 4.0.5 we added yet another explicit lock type: LOCK_REC_NOT_GAP. +It only locks the record it is placed on, not the gap before the record. +This lock type is necessary to emulate an Oracle-like READ COMMITTED isolation +level. + +------------------------------------------------------------------------- +RULE 1: If there is an implicit x-lock on a record, and there are non-gap +------- +lock requests waiting in the queue, then the transaction holding the implicit +x-lock also has an explicit non-gap record x-lock. Therefore, as locks are +released, we can grant locks to waiting lock requests purely by looking at +the explicit lock requests in the queue. + +RULE 3: Different transactions cannot have conflicting granted non-gap locks +------- +on a record at the same time. However, they can have conflicting granted gap +locks. +RULE 4: If a there is a waiting lock request in a queue, no lock request, +------- +gap or not, can be inserted ahead of it in the queue. In record deletes +and page splits new gap type locks can be created by the database manager +for a transaction, and without rule 4, the waits-for graph of transactions +might become cyclic without the database noticing it, as the deadlock check +is only performed when a transaction itself requests a lock! +------------------------------------------------------------------------- + +An insert is allowed to a gap if there are no explicit lock requests by +other transactions on the next record. It does not matter if these lock +requests are granted or waiting, gap bit set or not, with the exception +that a gap type request set by another transaction to wait for +its turn to do an insert is ignored. On the other hand, an +implicit x-lock by another transaction does not prevent an insert, which +allows for more concurrency when using an Oracle-style sequence number +generator for the primary key with many transactions doing inserts +concurrently. + +A modify of a record is allowed if the transaction has an x-lock on the +record, or if other transactions do not have any non-gap lock requests on the +record. + +A read of a single user record with a cursor is allowed if the transaction +has a non-gap explicit, or an implicit lock on the record, or if the other +transactions have no x-lock requests on the record. At a page supremum a +read is always allowed. + +In summary, an implicit lock is seen as a granted x-lock only on the +record, not on the gap. An explicit lock with no gap bit set is a lock +both on the record and the gap. If the gap bit is set, the lock is only +on the gap. Different transaction cannot own conflicting locks on the +record at the same time, but they may own conflicting locks on the gap. +Granted locks on a record give an access right to the record, but gap type +locks just inhibit operations. + +NOTE: Finding out if some transaction has an implicit x-lock on a secondary +index record can be cumbersome. We may have to look at previous versions of +the corresponding clustered index record to find out if a delete marked +secondary index record was delete marked by an active transaction, not by +a committed one. + +FACT A: If a transaction has inserted a row, it can delete it any time +without need to wait for locks. + +PROOF: The transaction has an implicit x-lock on every index record inserted +for the row, and can thus modify each record without the need to wait. Q.E.D. + +FACT B: If a transaction has read some result set with a cursor, it can read +it again, and retrieves the same result set, if it has not modified the +result set in the meantime. Hence, there is no phantom problem. If the +biggest record, in the alphabetical order, touched by the cursor is removed, +a lock wait may occur, otherwise not. + +PROOF: When a read cursor proceeds, it sets an s-lock on each user record +it passes, and a gap type s-lock on each page supremum. The cursor must +wait until it has these locks granted. Then no other transaction can +have a granted x-lock on any of the user records, and therefore cannot +modify the user records. Neither can any other transaction insert into +the gaps which were passed over by the cursor. Page splits and merges, +and removal of obsolete versions of records do not affect this, because +when a user record or a page supremum is removed, the next record inherits +its locks as gap type locks, and therefore blocks inserts to the same gap. +Also, if a page supremum is inserted, it inherits its locks from the successor +record. When the cursor is positioned again at the start of the result set, +the records it will touch on its course are either records it touched +during the last pass or new inserted page supremums. It can immediately +access all these records, and when it arrives at the biggest record, it +notices that the result set is complete. If the biggest record was removed, +lock wait can occur because the next record only inherits a gap type lock, +and a wait may be needed. Q.E.D. */ + +/* If an index record should be changed or a new inserted, we must check +the lock on the record or the next. When a read cursor starts reading, +we will set a record level s-lock on each record it passes, except on the +initial record on which the cursor is positioned before we start to fetch +records. Our index tree search has the convention that the B-tree +cursor is positioned BEFORE the first possibly matching record in +the search. Optimizations are possible here: if the record is searched +on an equality condition to a unique key, we could actually set a special +lock on the record, a lock which would not prevent any insert before +this record. In the next key locking an x-lock set on a record also +prevents inserts just before that record. + There are special infimum and supremum records on each page. +A supremum record can be locked by a read cursor. This records cannot be +updated but the lock prevents insert of a user record to the end of +the page. + Next key locks will prevent the phantom problem where new rows +could appear to SELECT result sets after the select operation has been +performed. Prevention of phantoms ensures the serilizability of +transactions. + What should we check if an insert of a new record is wanted? +Only the lock on the next record on the same page, because also the +supremum record can carry a lock. An s-lock prevents insertion, but +what about an x-lock? If it was set by a searched update, then there +is implicitly an s-lock, too, and the insert should be prevented. +What if our transaction owns an x-lock to the next record, but there is +a waiting s-lock request on the next record? If this s-lock was placed +by a read cursor moving in the ascending order in the index, we cannot +do the insert immediately, because when we finally commit our transaction, +the read cursor should see also the new inserted record. So we should +move the read cursor backward from the the next record for it to pass over +the new inserted record. This move backward may be too cumbersome to +implement. If we in this situation just enqueue a second x-lock request +for our transaction on the next record, then the deadlock mechanism +notices a deadlock between our transaction and the s-lock request +transaction. This seems to be an ok solution. + We could have the convention that granted explicit record locks, +lock the corresponding records from changing, and also lock the gaps +before them from inserting. A waiting explicit lock request locks the gap +before from inserting. Implicit record x-locks, which we derive from the +transaction id in the clustered index record, only lock the record itself +from modification, not the gap before it from inserting. + How should we store update locks? If the search is done by a unique +key, we could just modify the record trx id. Otherwise, we could put a record +x-lock on the record. If the update changes ordering fields of the +clustered index record, the inserted new record needs no record lock in +lock table, the trx id is enough. The same holds for a secondary index +record. Searched delete is similar to update. + +PROBLEM: +What about waiting lock requests? If a transaction is waiting to make an +update to a record which another modified, how does the other transaction +know to send the end-lock-wait signal to the waiting transaction? If we have +the convention that a transaction may wait for just one lock at a time, how +do we preserve it if lock wait ends? + +PROBLEM: +Checking the trx id label of a secondary index record. In the case of a +modification, not an insert, is this necessary? A secondary index record +is modified only by setting or resetting its deleted flag. A secondary index +record contains fields to uniquely determine the corresponding clustered +index record. A secondary index record is therefore only modified if we +also modify the clustered index record, and the trx id checking is done +on the clustered index record, before we come to modify the secondary index +record. So, in the case of delete marking or unmarking a secondary index +record, we do not have to care about trx ids, only the locks in the lock +table must be checked. In the case of a select from a secondary index, the +trx id is relevant, and in this case we may have to search the clustered +index record. + +PROBLEM: How to update record locks when page is split or merged, or +-------------------------------------------------------------------- +a record is deleted or updated? +If the size of fields in a record changes, we perform the update by +a delete followed by an insert. How can we retain the locks set or +waiting on the record? Because a record lock is indexed in the bitmap +by the heap number of the record, when we remove the record from the +record list, it is possible still to keep the lock bits. If the page +is reorganized, we could make a table of old and new heap numbers, +and permute the bitmaps in the locks accordingly. We can add to the +table a row telling where the updated record ended. If the update does +not require a reorganization of the page, we can simply move the lock +bits for the updated record to the position determined by its new heap +number (we may have to allocate a new lock, if we run out of the bitmap +in the old one). + A more complicated case is the one where the reinsertion of the +updated record is done pessimistically, because the structure of the +tree may change. + +PROBLEM: If a supremum record is removed in a page merge, or a record +--------------------------------------------------------------------- +removed in a purge, what to do to the waiting lock requests? In a split to +the right, we just move the lock requests to the new supremum. If a record +is removed, we could move the waiting lock request to its inheritor, the +next record in the index. But, the next record may already have lock +requests on its own queue. A new deadlock check should be made then. Maybe +it is easier just to release the waiting transactions. They can then enqueue +new lock requests on appropriate records. + +PROBLEM: When a record is inserted, what locks should it inherit from the +------------------------------------------------------------------------- +upper neighbor? An insert of a new supremum record in a page split is +always possible, but an insert of a new user record requires that the upper +neighbor does not have any lock requests by other transactions, granted or +waiting, in its lock queue. Solution: We can copy the locks as gap type +locks, so that also the waiting locks are transformed to granted gap type +locks on the inserted record. */ + +/* LOCK COMPATIBILITY MATRIX + * IS IX S X AI + * IS + + + - + + * IX + + - - + + * S + - + - - + * X - - - - - + * AI + + - - - + * + * Note that for rows, InnoDB only acquires S or X locks. + * For tables, InnoDB normally acquires IS or IX locks. + * S or X table locks are only acquired for LOCK TABLES. + * Auto-increment (AI) locks are needed because of + * statement-level MySQL binlog. + * See also lock_mode_compatible(). + */ +#define LK(a,b) (1 << ((a) * LOCK_NUM + (b))) +#define LKS(a,b) LK(a,b) | LK(b,a) + +/* Define the lock compatibility matrix in a ulint. The first line below +defines the diagonal entries. The following lines define the compatibility +for LOCK_IX, LOCK_S, and LOCK_AUTO_INC using LKS(), since the matrix +is symmetric. */ +#define LOCK_MODE_COMPATIBILITY 0 \ + | LK(LOCK_IS, LOCK_IS) | LK(LOCK_IX, LOCK_IX) | LK(LOCK_S, LOCK_S) \ + | LKS(LOCK_IX, LOCK_IS) | LKS(LOCK_IS, LOCK_AUTO_INC) \ + | LKS(LOCK_S, LOCK_IS) \ + | LKS(LOCK_AUTO_INC, LOCK_IS) | LKS(LOCK_AUTO_INC, LOCK_IX) + +/* STRONGER-OR-EQUAL RELATION (mode1=row, mode2=column) + * IS IX S X AI + * IS + - - - - + * IX + + - - - + * S + - + - - + * X + + + + + + * AI - - - - + + * See lock_mode_stronger_or_eq(). + */ + +/* Define the stronger-or-equal lock relation in a ulint. This relation +contains all pairs LK(mode1, mode2) where mode1 is stronger than or +equal to mode2. */ +#define LOCK_MODE_STRONGER_OR_EQ 0 \ + | LK(LOCK_IS, LOCK_IS) \ + | LK(LOCK_IX, LOCK_IS) | LK(LOCK_IX, LOCK_IX) \ + | LK(LOCK_S, LOCK_IS) | LK(LOCK_S, LOCK_S) \ + | LK(LOCK_AUTO_INC, LOCK_AUTO_INC) \ + | LK(LOCK_X, LOCK_IS) | LK(LOCK_X, LOCK_IX) | LK(LOCK_X, LOCK_S) \ + | LK(LOCK_X, LOCK_AUTO_INC) | LK(LOCK_X, LOCK_X) + +#ifdef UNIV_DEBUG +UNIV_INTERN ibool lock_print_waits = FALSE; + +/************************************************************************* +Validates the lock system. */ +static +ibool +lock_validate(void); +/*===============*/ + /* out: TRUE if ok */ + +/************************************************************************* +Validates the record lock queues on a page. */ +static +ibool +lock_rec_validate_page( +/*===================*/ + /* out: TRUE if ok */ + ulint space, /* in: space id */ + ulint page_no);/* in: page number */ + +/* Define the following in order to enable lock_rec_validate_page() checks. */ +# undef UNIV_DEBUG_LOCK_VALIDATE +#endif /* UNIV_DEBUG */ + +/* The lock system */ +UNIV_INTERN lock_sys_t* lock_sys = NULL; + +/* We store info on the latest deadlock error to this buffer. InnoDB +Monitor will then fetch it and print */ +UNIV_INTERN ibool lock_deadlock_found = FALSE; +UNIV_INTERN FILE* lock_latest_err_file; + +/* Flags for recursive deadlock search */ +#define LOCK_VICTIM_IS_START 1 +#define LOCK_VICTIM_IS_OTHER 2 + +/************************************************************************ +Checks if a lock request results in a deadlock. */ +static +ibool +lock_deadlock_occurs( +/*=================*/ + /* out: TRUE if a deadlock was detected and we + chose trx as a victim; FALSE if no deadlock, or + there was a deadlock, but we chose other + transaction(s) as victim(s) */ + lock_t* lock, /* in: lock the transaction is requesting */ + trx_t* trx); /* in: transaction */ +/************************************************************************ +Looks recursively for a deadlock. */ +static +ulint +lock_deadlock_recursive( +/*====================*/ + /* out: 0 if no deadlock found, + LOCK_VICTIM_IS_START if there was a deadlock + and we chose 'start' as the victim, + LOCK_VICTIM_IS_OTHER if a deadlock + was found and we chose some other trx as a + victim: we must do the search again in this + last case because there may be another + deadlock! */ + trx_t* start, /* in: recursion starting point */ + trx_t* trx, /* in: a transaction waiting for a lock */ + lock_t* wait_lock, /* in: the lock trx is waiting to be granted */ + ulint* cost, /* in/out: number of calculation steps thus + far: if this exceeds LOCK_MAX_N_STEPS_... + we return LOCK_VICTIM_IS_START */ + ulint depth); /* in: recursion depth: if this exceeds + LOCK_MAX_DEPTH_IN_DEADLOCK_CHECK, we + return LOCK_VICTIM_IS_START */ + +/************************************************************************* +Gets the nth bit of a record lock. */ +UNIV_INLINE +ibool +lock_rec_get_nth_bit( +/*=================*/ + /* out: TRUE if bit set */ + const lock_t* lock, /* in: record lock */ + ulint i) /* in: index of the bit */ +{ + ulint byte_index; + ulint bit_index; + + ut_ad(lock); + ut_ad(lock_get_type_low(lock) == LOCK_REC); + + if (i >= lock->un_member.rec_lock.n_bits) { + + return(FALSE); + } + + byte_index = i / 8; + bit_index = i % 8; + + return(1 & ((const byte*) &lock[1])[byte_index] >> bit_index); +} + +/*************************************************************************/ + +#define lock_mutex_enter_kernel() mutex_enter(&kernel_mutex) +#define lock_mutex_exit_kernel() mutex_exit(&kernel_mutex) + +/************************************************************************* +Checks that a transaction id is sensible, i.e., not in the future. */ +UNIV_INTERN +ibool +lock_check_trx_id_sanity( +/*=====================*/ + /* out: TRUE if ok */ + dulint trx_id, /* in: trx id */ + const rec_t* rec, /* in: user record */ + dict_index_t* index, /* in: index */ + const ulint* offsets, /* in: rec_get_offsets(rec, index) */ + ibool has_kernel_mutex)/* in: TRUE if the caller owns the + kernel mutex */ +{ + ibool is_ok = TRUE; + + ut_ad(rec_offs_validate(rec, index, offsets)); + + if (!has_kernel_mutex) { + mutex_enter(&kernel_mutex); + } + + /* A sanity check: the trx_id in rec must be smaller than the global + trx id counter */ + + if (ut_dulint_cmp(trx_id, trx_sys->max_trx_id) >= 0) { + ut_print_timestamp(stderr); + fputs(" InnoDB: Error: transaction id associated" + " with record\n", + stderr); + rec_print_new(stderr, rec, offsets); + fputs("InnoDB: in ", stderr); + dict_index_name_print(stderr, NULL, index); + fprintf(stderr, "\n" + "InnoDB: is " TRX_ID_FMT " which is higher than the" + " global trx id counter " TRX_ID_FMT "!\n" + "InnoDB: The table is corrupt. You have to do" + " dump + drop + reimport.\n", + TRX_ID_PREP_PRINTF(trx_id), + TRX_ID_PREP_PRINTF(trx_sys->max_trx_id)); + + is_ok = FALSE; + } + + if (!has_kernel_mutex) { + mutex_exit(&kernel_mutex); + } + + return(is_ok); +} + +/************************************************************************* +Checks that a record is seen in a consistent read. */ +UNIV_INTERN +ibool +lock_clust_rec_cons_read_sees( +/*==========================*/ + /* out: TRUE if sees, or FALSE if an earlier + version of the record should be retrieved */ + const rec_t* rec, /* in: user record which should be read or + passed over by a read cursor */ + dict_index_t* index, /* in: clustered index */ + const ulint* offsets,/* in: rec_get_offsets(rec, index) */ + read_view_t* view) /* in: consistent read view */ +{ + dulint trx_id; + + ut_ad(dict_index_is_clust(index)); + ut_ad(page_rec_is_user_rec(rec)); + ut_ad(rec_offs_validate(rec, index, offsets)); + + /* NOTE that we call this function while holding the search + system latch. To obey the latching order we must NOT reserve the + kernel mutex here! */ + + trx_id = row_get_rec_trx_id(rec, index, offsets); + + return(read_view_sees_trx_id(view, trx_id)); +} + +/************************************************************************* +Checks that a non-clustered index record is seen in a consistent read. */ +UNIV_INTERN +ulint +lock_sec_rec_cons_read_sees( +/*========================*/ + /* out: TRUE if certainly + sees, or FALSE if an earlier + version of the clustered index + record might be needed: NOTE + that a non-clustered index + page contains so little + information on its + modifications that also in the + case FALSE, the present + version of rec may be the + right, but we must check this + from the clustered index + record */ + const rec_t* rec, /* in: user record which + should be read or passed over + by a read cursor */ + const read_view_t* view) /* in: consistent read view */ +{ + dulint max_trx_id; + + ut_ad(page_rec_is_user_rec(rec)); + + /* NOTE that we might call this function while holding the search + system latch. To obey the latching order we must NOT reserve the + kernel mutex here! */ + + if (recv_recovery_is_on()) { + + return(FALSE); + } + + max_trx_id = page_get_max_trx_id(page_align(rec)); + + return(ut_dulint_cmp(max_trx_id, view->up_limit_id) < 0); +} + +/************************************************************************* +Creates the lock system at database start. */ +UNIV_INTERN +void +lock_sys_create( +/*============*/ + ulint n_cells) /* in: number of slots in lock hash table */ +{ + lock_sys = mem_alloc(sizeof(lock_sys_t)); + + lock_sys->rec_hash = hash_create(n_cells); + + /* hash_create_mutexes(lock_sys->rec_hash, 2, SYNC_REC_LOCK); */ + + lock_latest_err_file = os_file_create_tmpfile(); + ut_a(lock_latest_err_file); +} + +/************************************************************************* +Gets the size of a lock struct. */ +UNIV_INTERN +ulint +lock_get_size(void) +/*===============*/ + /* out: size in bytes */ +{ + return((ulint)sizeof(lock_t)); +} + +/************************************************************************* +Gets the mode of a lock. */ +UNIV_INLINE +enum lock_mode +lock_get_mode( +/*==========*/ + /* out: mode */ + const lock_t* lock) /* in: lock */ +{ + ut_ad(lock); + + return(lock->type_mode & LOCK_MODE_MASK); +} + +/************************************************************************* +Gets the wait flag of a lock. */ +UNIV_INLINE +ibool +lock_get_wait( +/*==========*/ + /* out: TRUE if waiting */ + const lock_t* lock) /* in: lock */ +{ + ut_ad(lock); + + if (UNIV_UNLIKELY(lock->type_mode & LOCK_WAIT)) { + + return(TRUE); + } + + return(FALSE); +} + +/************************************************************************* +Gets the source table of an ALTER TABLE transaction. The table must be +covered by an IX or IS table lock. */ +UNIV_INTERN +dict_table_t* +lock_get_src_table( +/*===============*/ + /* out: the source table of transaction, + if it is covered by an IX or IS table lock; + dest if there is no source table, and + NULL if the transaction is locking more than + two tables or an inconsistency is found */ + trx_t* trx, /* in: transaction */ + dict_table_t* dest, /* in: destination of ALTER TABLE */ + enum lock_mode* mode) /* out: lock mode of the source table */ +{ + dict_table_t* src; + lock_t* lock; + + src = NULL; + *mode = LOCK_NONE; + + for (lock = UT_LIST_GET_FIRST(trx->trx_locks); + lock; + lock = UT_LIST_GET_NEXT(trx_locks, lock)) { + lock_table_t* tab_lock; + enum lock_mode lock_mode; + if (!(lock_get_type_low(lock) & LOCK_TABLE)) { + /* We are only interested in table locks. */ + continue; + } + tab_lock = &lock->un_member.tab_lock; + if (dest == tab_lock->table) { + /* We are not interested in the destination table. */ + continue; + } else if (!src) { + /* This presumably is the source table. */ + src = tab_lock->table; + if (UT_LIST_GET_LEN(src->locks) != 1 + || UT_LIST_GET_FIRST(src->locks) != lock) { + /* We only support the case when + there is only one lock on this table. */ + return(NULL); + } + } else if (src != tab_lock->table) { + /* The transaction is locking more than + two tables (src and dest): abort */ + return(NULL); + } + + /* Check that the source table is locked by + LOCK_IX or LOCK_IS. */ + lock_mode = lock_get_mode(lock); + if (lock_mode == LOCK_IX || lock_mode == LOCK_IS) { + if (*mode != LOCK_NONE && *mode != lock_mode) { + /* There are multiple locks on src. */ + return(NULL); + } + *mode = lock_mode; + } + } + + if (!src) { + /* No source table lock found: flag the situation to caller */ + src = dest; + } + + return(src); +} + +/************************************************************************* +Determine if the given table is exclusively "owned" by the given +transaction, i.e., transaction holds LOCK_IX and possibly LOCK_AUTO_INC +on the table. */ +UNIV_INTERN +ibool +lock_is_table_exclusive( +/*====================*/ + /* out: TRUE if table is only locked by trx, + with LOCK_IX, and possibly LOCK_AUTO_INC */ + dict_table_t* table, /* in: table */ + trx_t* trx) /* in: transaction */ +{ + const lock_t* lock; + ibool ok = FALSE; + + ut_ad(table); + ut_ad(trx); + + lock_mutex_enter_kernel(); + + for (lock = UT_LIST_GET_FIRST(table->locks); + lock; + lock = UT_LIST_GET_NEXT(locks, &lock->un_member.tab_lock)) { + if (lock->trx != trx) { + /* A lock on the table is held + by some other transaction. */ + goto not_ok; + } + + if (!(lock_get_type_low(lock) & LOCK_TABLE)) { + /* We are interested in table locks only. */ + continue; + } + + switch (lock_get_mode(lock)) { + case LOCK_IX: + ok = TRUE; + break; + case LOCK_AUTO_INC: + /* It is allowed for trx to hold an + auto_increment lock. */ + break; + default: +not_ok: + /* Other table locks than LOCK_IX are not allowed. */ + ok = FALSE; + goto func_exit; + } + } + +func_exit: + lock_mutex_exit_kernel(); + + return(ok); +} + +/************************************************************************* +Sets the wait flag of a lock and the back pointer in trx to lock. */ +UNIV_INLINE +void +lock_set_lock_and_trx_wait( +/*=======================*/ + lock_t* lock, /* in: lock */ + trx_t* trx) /* in: trx */ +{ + ut_ad(lock); + ut_ad(trx->wait_lock == NULL); + + trx->wait_lock = lock; + lock->type_mode |= LOCK_WAIT; +} + +/************************************************************************** +The back pointer to a waiting lock request in the transaction is set to NULL +and the wait bit in lock type_mode is reset. */ +UNIV_INLINE +void +lock_reset_lock_and_trx_wait( +/*=========================*/ + lock_t* lock) /* in: record lock */ +{ + ut_ad((lock->trx)->wait_lock == lock); + ut_ad(lock_get_wait(lock)); + + /* Reset the back pointer in trx to this waiting lock request */ + + (lock->trx)->wait_lock = NULL; + lock->type_mode &= ~LOCK_WAIT; +} + +/************************************************************************* +Gets the gap flag of a record lock. */ +UNIV_INLINE +ibool +lock_rec_get_gap( +/*=============*/ + /* out: TRUE if gap flag set */ + const lock_t* lock) /* in: record lock */ +{ + ut_ad(lock); + ut_ad(lock_get_type_low(lock) == LOCK_REC); + + if (lock->type_mode & LOCK_GAP) { + + return(TRUE); + } + + return(FALSE); +} + +/************************************************************************* +Gets the LOCK_REC_NOT_GAP flag of a record lock. */ +UNIV_INLINE +ibool +lock_rec_get_rec_not_gap( +/*=====================*/ + /* out: TRUE if LOCK_REC_NOT_GAP flag set */ + const lock_t* lock) /* in: record lock */ +{ + ut_ad(lock); + ut_ad(lock_get_type_low(lock) == LOCK_REC); + + if (lock->type_mode & LOCK_REC_NOT_GAP) { + + return(TRUE); + } + + return(FALSE); +} + +/************************************************************************* +Gets the waiting insert flag of a record lock. */ +UNIV_INLINE +ibool +lock_rec_get_insert_intention( +/*==========================*/ + /* out: TRUE if gap flag set */ + const lock_t* lock) /* in: record lock */ +{ + ut_ad(lock); + ut_ad(lock_get_type_low(lock) == LOCK_REC); + + if (lock->type_mode & LOCK_INSERT_INTENTION) { + + return(TRUE); + } + + return(FALSE); +} + +/************************************************************************* +Calculates if lock mode 1 is stronger or equal to lock mode 2. */ +UNIV_INLINE +ulint +lock_mode_stronger_or_eq( +/*=====================*/ + /* out: nonzero + if mode1 stronger or equal to mode2 */ + enum lock_mode mode1, /* in: lock mode */ + enum lock_mode mode2) /* in: lock mode */ +{ + ut_ad(mode1 == LOCK_X || mode1 == LOCK_S || mode1 == LOCK_IX + || mode1 == LOCK_IS || mode1 == LOCK_AUTO_INC); + ut_ad(mode2 == LOCK_X || mode2 == LOCK_S || mode2 == LOCK_IX + || mode2 == LOCK_IS || mode2 == LOCK_AUTO_INC); + + return((LOCK_MODE_STRONGER_OR_EQ) & LK(mode1, mode2)); +} + +/************************************************************************* +Calculates if lock mode 1 is compatible with lock mode 2. */ +UNIV_INLINE +ulint +lock_mode_compatible( +/*=================*/ + /* out: nonzero if mode1 compatible with mode2 */ + enum lock_mode mode1, /* in: lock mode */ + enum lock_mode mode2) /* in: lock mode */ +{ + ut_ad(mode1 == LOCK_X || mode1 == LOCK_S || mode1 == LOCK_IX + || mode1 == LOCK_IS || mode1 == LOCK_AUTO_INC); + ut_ad(mode2 == LOCK_X || mode2 == LOCK_S || mode2 == LOCK_IX + || mode2 == LOCK_IS || mode2 == LOCK_AUTO_INC); + + return((LOCK_MODE_COMPATIBILITY) & LK(mode1, mode2)); +} + +/************************************************************************* +Checks if a lock request for a new lock has to wait for request lock2. */ +UNIV_INLINE +ibool +lock_rec_has_to_wait( +/*=================*/ + /* out: TRUE if new lock has to wait + for lock2 to be removed */ + const trx_t* trx, /* in: trx of new lock */ + ulint type_mode,/* in: precise mode of the new lock + to set: LOCK_S or LOCK_X, possibly + ORed to LOCK_GAP or LOCK_REC_NOT_GAP, + LOCK_INSERT_INTENTION */ + const lock_t* lock2, /* in: another record lock; NOTE that + it is assumed that this has a lock bit + set on the same record as in the new + lock we are setting */ + ibool lock_is_on_supremum) /* in: TRUE if we are setting the + lock on the 'supremum' record of an + index page: we know then that the lock + request is really for a 'gap' type lock */ +{ + ut_ad(trx && lock2); + ut_ad(lock_get_type_low(lock2) == LOCK_REC); + + if (trx != lock2->trx + && !lock_mode_compatible(LOCK_MODE_MASK & type_mode, + lock_get_mode(lock2))) { + + /* We have somewhat complex rules when gap type record locks + cause waits */ + + if ((lock_is_on_supremum || (type_mode & LOCK_GAP)) + && !(type_mode & LOCK_INSERT_INTENTION)) { + + /* Gap type locks without LOCK_INSERT_INTENTION flag + do not need to wait for anything. This is because + different users can have conflicting lock types + on gaps. */ + + return(FALSE); + } + + if (!(type_mode & LOCK_INSERT_INTENTION) + && lock_rec_get_gap(lock2)) { + + /* Record lock (LOCK_ORDINARY or LOCK_REC_NOT_GAP + does not need to wait for a gap type lock */ + + return(FALSE); + } + + if ((type_mode & LOCK_GAP) + && lock_rec_get_rec_not_gap(lock2)) { + + /* Lock on gap does not need to wait for + a LOCK_REC_NOT_GAP type lock */ + + return(FALSE); + } + + if (lock_rec_get_insert_intention(lock2)) { + + /* No lock request needs to wait for an insert + intention lock to be removed. This is ok since our + rules allow conflicting locks on gaps. This eliminates + a spurious deadlock caused by a next-key lock waiting + for an insert intention lock; when the insert + intention lock was granted, the insert deadlocked on + the waiting next-key lock. + + Also, insert intention locks do not disturb each + other. */ + + return(FALSE); + } + + return(TRUE); + } + + return(FALSE); +} + +/************************************************************************* +Checks if a lock request lock1 has to wait for request lock2. */ +UNIV_INTERN +ibool +lock_has_to_wait( +/*=============*/ + /* out: TRUE if lock1 has to wait for + lock2 to be removed */ + const lock_t* lock1, /* in: waiting lock */ + const lock_t* lock2) /* in: another lock; NOTE that it is + assumed that this has a lock bit set + on the same record as in lock1 if the + locks are record locks */ +{ + ut_ad(lock1 && lock2); + + if (lock1->trx != lock2->trx + && !lock_mode_compatible(lock_get_mode(lock1), + lock_get_mode(lock2))) { + if (lock_get_type_low(lock1) == LOCK_REC) { + ut_ad(lock_get_type_low(lock2) == LOCK_REC); + + /* If this lock request is for a supremum record + then the second bit on the lock bitmap is set */ + + return(lock_rec_has_to_wait(lock1->trx, + lock1->type_mode, lock2, + lock_rec_get_nth_bit( + lock1, 1))); + } + + return(TRUE); + } + + return(FALSE); +} + +/*============== RECORD LOCK BASIC FUNCTIONS ============================*/ + +/************************************************************************* +Gets the number of bits in a record lock bitmap. */ +UNIV_INLINE +ulint +lock_rec_get_n_bits( +/*================*/ + /* out: number of bits */ + const lock_t* lock) /* in: record lock */ +{ + return(lock->un_member.rec_lock.n_bits); +} + +/************************************************************************** +Sets the nth bit of a record lock to TRUE. */ +UNIV_INLINE +void +lock_rec_set_nth_bit( +/*=================*/ + lock_t* lock, /* in: record lock */ + ulint i) /* in: index of the bit */ +{ + ulint byte_index; + ulint bit_index; + + ut_ad(lock); + ut_ad(lock_get_type_low(lock) == LOCK_REC); + ut_ad(i < lock->un_member.rec_lock.n_bits); + + byte_index = i / 8; + bit_index = i % 8; + + ((byte*) &lock[1])[byte_index] |= 1 << bit_index; +} + +/************************************************************************** +Looks for a set bit in a record lock bitmap. Returns ULINT_UNDEFINED, +if none found. */ +UNIV_INTERN +ulint +lock_rec_find_set_bit( +/*==================*/ + /* out: bit index == heap number of + the record, or ULINT_UNDEFINED if none found */ + const lock_t* lock) /* in: record lock with at least one bit set */ +{ + ulint i; + + for (i = 0; i < lock_rec_get_n_bits(lock); i++) { + + if (lock_rec_get_nth_bit(lock, i)) { + + return(i); + } + } + + return(ULINT_UNDEFINED); +} + +/************************************************************************** +Resets the nth bit of a record lock. */ +UNIV_INLINE +void +lock_rec_reset_nth_bit( +/*===================*/ + lock_t* lock, /* in: record lock */ + ulint i) /* in: index of the bit which must be set to TRUE + when this function is called */ +{ + ulint byte_index; + ulint bit_index; + + ut_ad(lock); + ut_ad(lock_get_type_low(lock) == LOCK_REC); + ut_ad(i < lock->un_member.rec_lock.n_bits); + + byte_index = i / 8; + bit_index = i % 8; + + ((byte*) &lock[1])[byte_index] &= ~(1 << bit_index); +} + +/************************************************************************* +Gets the first or next record lock on a page. */ +UNIV_INLINE +lock_t* +lock_rec_get_next_on_page( +/*======================*/ + /* out: next lock, NULL if none exists */ + lock_t* lock) /* in: a record lock */ +{ + ulint space; + ulint page_no; + + ut_ad(mutex_own(&kernel_mutex)); + ut_ad(lock_get_type_low(lock) == LOCK_REC); + + space = lock->un_member.rec_lock.space; + page_no = lock->un_member.rec_lock.page_no; + + for (;;) { + lock = HASH_GET_NEXT(hash, lock); + + if (!lock) { + + break; + } + + if ((lock->un_member.rec_lock.space == space) + && (lock->un_member.rec_lock.page_no == page_no)) { + + break; + } + } + + return(lock); +} + +/************************************************************************* +Gets the first record lock on a page, where the page is identified by its +file address. */ +UNIV_INLINE +lock_t* +lock_rec_get_first_on_page_addr( +/*============================*/ + /* out: first lock, NULL if none exists */ + ulint space, /* in: space */ + ulint page_no)/* in: page number */ +{ + lock_t* lock; + + ut_ad(mutex_own(&kernel_mutex)); + + lock = HASH_GET_FIRST(lock_sys->rec_hash, + lock_rec_hash(space, page_no)); + while (lock) { + if ((lock->un_member.rec_lock.space == space) + && (lock->un_member.rec_lock.page_no == page_no)) { + + break; + } + + lock = HASH_GET_NEXT(hash, lock); + } + + return(lock); +} + +/************************************************************************* +Returns TRUE if there are explicit record locks on a page. */ +UNIV_INTERN +ibool +lock_rec_expl_exist_on_page( +/*========================*/ + /* out: TRUE if there are explicit record locks on + the page */ + ulint space, /* in: space id */ + ulint page_no)/* in: page number */ +{ + ibool ret; + + mutex_enter(&kernel_mutex); + + if (lock_rec_get_first_on_page_addr(space, page_no)) { + ret = TRUE; + } else { + ret = FALSE; + } + + mutex_exit(&kernel_mutex); + + return(ret); +} + +/************************************************************************* +Gets the first record lock on a page, where the page is identified by a +pointer to it. */ +UNIV_INLINE +lock_t* +lock_rec_get_first_on_page( +/*=======================*/ + /* out: first lock, NULL if + none exists */ + const buf_block_t* block) /* in: buffer block */ +{ + ulint hash; + lock_t* lock; + ulint space = buf_block_get_space(block); + ulint page_no = buf_block_get_page_no(block); + + ut_ad(mutex_own(&kernel_mutex)); + + hash = buf_block_get_lock_hash_val(block); + + lock = HASH_GET_FIRST(lock_sys->rec_hash, hash); + + while (lock) { + if ((lock->un_member.rec_lock.space == space) + && (lock->un_member.rec_lock.page_no == page_no)) { + + break; + } + + lock = HASH_GET_NEXT(hash, lock); + } + + return(lock); +} + +/************************************************************************* +Gets the next explicit lock request on a record. */ +UNIV_INLINE +lock_t* +lock_rec_get_next( +/*==============*/ + /* out: next lock, NULL if none exists */ + ulint heap_no,/* in: heap number of the record */ + lock_t* lock) /* in: lock */ +{ + ut_ad(mutex_own(&kernel_mutex)); + + do { + ut_ad(lock_get_type_low(lock) == LOCK_REC); + lock = lock_rec_get_next_on_page(lock); + } while (lock && !lock_rec_get_nth_bit(lock, heap_no)); + + return(lock); +} + +/************************************************************************* +Gets the first explicit lock request on a record. */ +UNIV_INLINE +lock_t* +lock_rec_get_first( +/*===============*/ + /* out: first lock, NULL if + none exists */ + const buf_block_t* block, /* in: block containing the record */ + ulint heap_no)/* in: heap number of the record */ +{ + lock_t* lock; + + ut_ad(mutex_own(&kernel_mutex)); + + for (lock = lock_rec_get_first_on_page(block); lock; + lock = lock_rec_get_next_on_page(lock)) { + if (lock_rec_get_nth_bit(lock, heap_no)) { + break; + } + } + + return(lock); +} + +/************************************************************************* +Resets the record lock bitmap to zero. NOTE: does not touch the wait_lock +pointer in the transaction! This function is used in lock object creation +and resetting. */ +static +void +lock_rec_bitmap_reset( +/*==================*/ + lock_t* lock) /* in: record lock */ +{ + ulint n_bytes; + + ut_ad(lock_get_type_low(lock) == LOCK_REC); + + /* Reset to zero the bitmap which resides immediately after the lock + struct */ + + n_bytes = lock_rec_get_n_bits(lock) / 8; + + ut_ad((lock_rec_get_n_bits(lock) % 8) == 0); + + memset(&lock[1], 0, n_bytes); +} + +/************************************************************************* +Copies a record lock to heap. */ +static +lock_t* +lock_rec_copy( +/*==========*/ + /* out: copy of lock */ + const lock_t* lock, /* in: record lock */ + mem_heap_t* heap) /* in: memory heap */ +{ + ulint size; + + ut_ad(lock_get_type_low(lock) == LOCK_REC); + + size = sizeof(lock_t) + lock_rec_get_n_bits(lock) / 8; + + return(mem_heap_dup(heap, lock, size)); +} + +/************************************************************************* +Gets the previous record lock set on a record. */ +UNIV_INTERN +const lock_t* +lock_rec_get_prev( +/*==============*/ + /* out: previous lock on the same + record, NULL if none exists */ + const lock_t* in_lock,/* in: record lock */ + ulint heap_no)/* in: heap number of the record */ +{ + lock_t* lock; + ulint space; + ulint page_no; + lock_t* found_lock = NULL; + + ut_ad(mutex_own(&kernel_mutex)); + ut_ad(lock_get_type_low(in_lock) == LOCK_REC); + + space = in_lock->un_member.rec_lock.space; + page_no = in_lock->un_member.rec_lock.page_no; + + lock = lock_rec_get_first_on_page_addr(space, page_no); + + for (;;) { + ut_ad(lock); + + if (lock == in_lock) { + + return(found_lock); + } + + if (lock_rec_get_nth_bit(lock, heap_no)) { + + found_lock = lock; + } + + lock = lock_rec_get_next_on_page(lock); + } +} + +/*============= FUNCTIONS FOR ANALYZING TABLE LOCK QUEUE ================*/ + +/************************************************************************* +Checks if a transaction has the specified table lock, or stronger. */ +UNIV_INLINE +lock_t* +lock_table_has( +/*===========*/ + /* out: lock or NULL */ + trx_t* trx, /* in: transaction */ + dict_table_t* table, /* in: table */ + enum lock_mode mode) /* in: lock mode */ +{ + lock_t* lock; + + ut_ad(mutex_own(&kernel_mutex)); + + /* Look for stronger locks the same trx already has on the table */ + + lock = UT_LIST_GET_LAST(table->locks); + + while (lock != NULL) { + + if (lock->trx == trx + && lock_mode_stronger_or_eq(lock_get_mode(lock), mode)) { + + /* The same trx already has locked the table in + a mode stronger or equal to the mode given */ + + ut_ad(!lock_get_wait(lock)); + + return(lock); + } + + lock = UT_LIST_GET_PREV(un_member.tab_lock.locks, lock); + } + + return(NULL); +} + +/*============= FUNCTIONS FOR ANALYZING RECORD LOCK QUEUE ================*/ + +/************************************************************************* +Checks if a transaction has a GRANTED explicit lock on rec stronger or equal +to precise_mode. */ +UNIV_INLINE +lock_t* +lock_rec_has_expl( +/*==============*/ + /* out: lock or NULL */ + ulint precise_mode,/* in: LOCK_S or LOCK_X + possibly ORed to LOCK_GAP or + LOCK_REC_NOT_GAP, for a + supremum record we regard this + always a gap type request */ + const buf_block_t* block, /* in: buffer block containing + the record */ + ulint heap_no,/* in: heap number of the record */ + trx_t* trx) /* in: transaction */ +{ + lock_t* lock; + + ut_ad(mutex_own(&kernel_mutex)); + ut_ad((precise_mode & LOCK_MODE_MASK) == LOCK_S + || (precise_mode & LOCK_MODE_MASK) == LOCK_X); + ut_ad(!(precise_mode & LOCK_INSERT_INTENTION)); + + lock = lock_rec_get_first(block, heap_no); + + while (lock) { + if (lock->trx == trx + && lock_mode_stronger_or_eq(lock_get_mode(lock), + precise_mode & LOCK_MODE_MASK) + && !lock_get_wait(lock) + && (!lock_rec_get_rec_not_gap(lock) + || (precise_mode & LOCK_REC_NOT_GAP) + || heap_no == PAGE_HEAP_NO_SUPREMUM) + && (!lock_rec_get_gap(lock) + || (precise_mode & LOCK_GAP) + || heap_no == PAGE_HEAP_NO_SUPREMUM) + && (!lock_rec_get_insert_intention(lock))) { + + return(lock); + } + + lock = lock_rec_get_next(heap_no, lock); + } + + return(NULL); +} + +#ifdef UNIV_DEBUG +# ifndef UNIV_HOTBACKUP +/************************************************************************* +Checks if some other transaction has a lock request in the queue. */ +static +lock_t* +lock_rec_other_has_expl_req( +/*========================*/ + /* out: lock or NULL */ + enum lock_mode mode, /* in: LOCK_S or LOCK_X */ + ulint gap, /* in: LOCK_GAP if also gap + locks are taken into account, + or 0 if not */ + ulint wait, /* in: LOCK_WAIT if also + waiting locks are taken into + account, or 0 if not */ + const buf_block_t* block, /* in: buffer block containing + the record */ + ulint heap_no,/* in: heap number of the record */ + const trx_t* trx) /* in: transaction, or NULL if + requests by all transactions + are taken into account */ +{ + lock_t* lock; + + ut_ad(mutex_own(&kernel_mutex)); + ut_ad(mode == LOCK_X || mode == LOCK_S); + ut_ad(gap == 0 || gap == LOCK_GAP); + ut_ad(wait == 0 || wait == LOCK_WAIT); + + lock = lock_rec_get_first(block, heap_no); + + while (lock) { + if (lock->trx != trx + && (gap + || !(lock_rec_get_gap(lock) + || heap_no == PAGE_HEAP_NO_SUPREMUM)) + && (wait || !lock_get_wait(lock)) + && lock_mode_stronger_or_eq(lock_get_mode(lock), mode)) { + + return(lock); + } + + lock = lock_rec_get_next(heap_no, lock); + } + + return(NULL); +} +# endif /* !UNIV_HOTBACKUP */ +#endif /* UNIV_DEBUG */ + +/************************************************************************* +Checks if some other transaction has a conflicting explicit lock request +in the queue, so that we have to wait. */ +static +lock_t* +lock_rec_other_has_conflicting( +/*===========================*/ + /* out: lock or NULL */ + enum lock_mode mode, /* in: LOCK_S or LOCK_X, + possibly ORed to LOCK_GAP or + LOC_REC_NOT_GAP, + LOCK_INSERT_INTENTION */ + const buf_block_t* block, /* in: buffer block containing + the record */ + ulint heap_no,/* in: heap number of the record */ + trx_t* trx) /* in: our transaction */ +{ + lock_t* lock; + + ut_ad(mutex_own(&kernel_mutex)); + + lock = lock_rec_get_first(block, heap_no); + + if (UNIV_LIKELY_NULL(lock)) { + if (UNIV_UNLIKELY(heap_no == PAGE_HEAP_NO_SUPREMUM)) { + + do { + if (lock_rec_has_to_wait(trx, mode, lock, + TRUE)) { + return(lock); + } + + lock = lock_rec_get_next(heap_no, lock); + } while (lock); + } else { + + do { + if (lock_rec_has_to_wait(trx, mode, lock, + FALSE)) { + return(lock); + } + + lock = lock_rec_get_next(heap_no, lock); + } while (lock); + } + } + + return(NULL); +} + +/************************************************************************* +Looks for a suitable type record lock struct by the same trx on the same page. +This can be used to save space when a new record lock should be set on a page: +no new struct is needed, if a suitable old is found. */ +UNIV_INLINE +lock_t* +lock_rec_find_similar_on_page( +/*==========================*/ + /* out: lock or NULL */ + ulint type_mode, /* in: lock type_mode field */ + ulint heap_no, /* in: heap number of the record */ + lock_t* lock, /* in: lock_rec_get_first_on_page() */ + const trx_t* trx) /* in: transaction */ +{ + ut_ad(mutex_own(&kernel_mutex)); + + while (lock != NULL) { + if (lock->trx == trx + && lock->type_mode == type_mode + && lock_rec_get_n_bits(lock) > heap_no) { + + return(lock); + } + + lock = lock_rec_get_next_on_page(lock); + } + + return(NULL); +} + +/************************************************************************* +Checks if some transaction has an implicit x-lock on a record in a secondary +index. */ +static +trx_t* +lock_sec_rec_some_has_impl_off_kernel( +/*==================================*/ + /* out: transaction which has the x-lock, or + NULL */ + const rec_t* rec, /* in: user record */ + dict_index_t* index, /* in: secondary index */ + const ulint* offsets)/* in: rec_get_offsets(rec, index) */ +{ + const page_t* page = page_align(rec); + + ut_ad(mutex_own(&kernel_mutex)); + ut_ad(!dict_index_is_clust(index)); + ut_ad(page_rec_is_user_rec(rec)); + ut_ad(rec_offs_validate(rec, index, offsets)); + + /* Some transaction may have an implicit x-lock on the record only + if the max trx id for the page >= min trx id for the trx list, or + database recovery is running. We do not write the changes of a page + max trx id to the log, and therefore during recovery, this value + for a page may be incorrect. */ + + if (!(ut_dulint_cmp(page_get_max_trx_id(page), + trx_list_get_min_trx_id()) >= 0) + && !recv_recovery_is_on()) { + + return(NULL); + } + + /* Ok, in this case it is possible that some transaction has an + implicit x-lock. We have to look in the clustered index. */ + + if (!lock_check_trx_id_sanity(page_get_max_trx_id(page), + rec, index, offsets, TRUE)) { + buf_page_print(page, 0); + + /* The page is corrupt: try to avoid a crash by returning + NULL */ + return(NULL); + } + + return(row_vers_impl_x_locked_off_kernel(rec, index, offsets)); +} + +/************************************************************************* +Return approximate number or record locks (bits set in the bitmap) for +this transaction. Since delete-marked records may be removed, the +record count will not be precise. */ +UNIV_INTERN +ulint +lock_number_of_rows_locked( +/*=======================*/ + trx_t* trx) /* in: transaction */ +{ + lock_t* lock; + ulint n_records = 0; + ulint n_bits; + ulint n_bit; + + lock = UT_LIST_GET_FIRST(trx->trx_locks); + + while (lock) { + if (lock_get_type_low(lock) == LOCK_REC) { + n_bits = lock_rec_get_n_bits(lock); + + for (n_bit = 0; n_bit < n_bits; n_bit++) { + if (lock_rec_get_nth_bit(lock, n_bit)) { + n_records++; + } + } + } + + lock = UT_LIST_GET_NEXT(trx_locks, lock); + } + + return (n_records); +} + +/*============== RECORD LOCK CREATION AND QUEUE MANAGEMENT =============*/ + +/************************************************************************* +Creates a new record lock and inserts it to the lock queue. Does NOT check +for deadlocks or lock compatibility! */ +static +lock_t* +lock_rec_create( +/*============*/ + /* out: created lock */ + ulint type_mode,/* in: lock mode and wait + flag, type is ignored and + replaced by LOCK_REC */ + const buf_block_t* block, /* in: buffer block containing + the record */ + ulint heap_no,/* in: heap number of the record */ + dict_index_t* index, /* in: index of record */ + trx_t* trx) /* in: transaction */ +{ + lock_t* lock; + ulint page_no; + ulint space; + ulint n_bits; + ulint n_bytes; + const page_t* page; + + ut_ad(mutex_own(&kernel_mutex)); + + space = buf_block_get_space(block); + page_no = buf_block_get_page_no(block); + page = block->frame; + + ut_ad(!!page_is_comp(page) == dict_table_is_comp(index->table)); + + /* If rec is the supremum record, then we reset the gap and + LOCK_REC_NOT_GAP bits, as all locks on the supremum are + automatically of the gap type */ + + if (UNIV_UNLIKELY(heap_no == PAGE_HEAP_NO_SUPREMUM)) { + ut_ad(!(type_mode & LOCK_REC_NOT_GAP)); + + type_mode = type_mode & ~(LOCK_GAP | LOCK_REC_NOT_GAP); + } + + /* Make lock bitmap bigger by a safety margin */ + n_bits = page_dir_get_n_heap(page) + LOCK_PAGE_BITMAP_MARGIN; + n_bytes = 1 + n_bits / 8; + + lock = mem_heap_alloc(trx->lock_heap, sizeof(lock_t) + n_bytes); + + UT_LIST_ADD_LAST(trx_locks, trx->trx_locks, lock); + + lock->trx = trx; + + lock->type_mode = (type_mode & ~LOCK_TYPE_MASK) | LOCK_REC; + lock->index = index; + + lock->un_member.rec_lock.space = space; + lock->un_member.rec_lock.page_no = page_no; + lock->un_member.rec_lock.n_bits = n_bytes * 8; + + /* Reset to zero the bitmap which resides immediately after the + lock struct */ + + lock_rec_bitmap_reset(lock); + + /* Set the bit corresponding to rec */ + lock_rec_set_nth_bit(lock, heap_no); + + HASH_INSERT(lock_t, hash, lock_sys->rec_hash, + lock_rec_fold(space, page_no), lock); + if (UNIV_UNLIKELY(type_mode & LOCK_WAIT)) { + + lock_set_lock_and_trx_wait(lock, trx); + } + + return(lock); +} + +/************************************************************************* +Enqueues a waiting request for a lock which cannot be granted immediately. +Checks for deadlocks. */ +static +ulint +lock_rec_enqueue_waiting( +/*=====================*/ + /* out: DB_LOCK_WAIT, + DB_DEADLOCK, or + DB_QUE_THR_SUSPENDED, or + DB_SUCCESS; DB_SUCCESS means + that there was a deadlock, but + another transaction was chosen + as a victim, and we got the + lock immediately: no need to + wait then */ + ulint type_mode,/* in: lock mode this + transaction is requesting: + LOCK_S or LOCK_X, possibly + ORed with LOCK_GAP or + LOCK_REC_NOT_GAP, ORed with + LOCK_INSERT_INTENTION if this + waiting lock request is set + when performing an insert of + an index record */ + const buf_block_t* block, /* in: buffer block containing + the record */ + ulint heap_no,/* in: heap number of the record */ + dict_index_t* index, /* in: index of record */ + que_thr_t* thr) /* in: query thread */ +{ + lock_t* lock; + trx_t* trx; + + ut_ad(mutex_own(&kernel_mutex)); + + /* Test if there already is some other reason to suspend thread: + we do not enqueue a lock request if the query thread should be + stopped anyway */ + + if (UNIV_UNLIKELY(que_thr_stop(thr))) { + + ut_error; + + return(DB_QUE_THR_SUSPENDED); + } + + trx = thr_get_trx(thr); + + switch (trx_get_dict_operation(trx)) { + case TRX_DICT_OP_NONE: + break; + case TRX_DICT_OP_TABLE: + case TRX_DICT_OP_INDEX: + ut_print_timestamp(stderr); + fputs(" InnoDB: Error: a record lock wait happens" + " in a dictionary operation!\n" + "InnoDB: ", stderr); + dict_index_name_print(stderr, trx, index); + fputs(".\n" + "InnoDB: Submit a detailed bug report" + " to http://bugs.mysql.com\n", + stderr); + } + + /* Enqueue the lock request that will wait to be granted */ + lock = lock_rec_create(type_mode | LOCK_WAIT, + block, heap_no, index, trx); + + /* Check if a deadlock occurs: if yes, remove the lock request and + return an error code */ + + if (UNIV_UNLIKELY(lock_deadlock_occurs(lock, trx))) { + + lock_reset_lock_and_trx_wait(lock); + lock_rec_reset_nth_bit(lock, heap_no); + + return(DB_DEADLOCK); + } + + /* If there was a deadlock but we chose another transaction as a + victim, it is possible that we already have the lock now granted! */ + + if (trx->wait_lock == NULL) { + + return(DB_SUCCESS); + } + + trx->que_state = TRX_QUE_LOCK_WAIT; + trx->was_chosen_as_deadlock_victim = FALSE; + trx->wait_started = time(NULL); + + ut_a(que_thr_stop(thr)); + +#ifdef UNIV_DEBUG + if (lock_print_waits) { + fprintf(stderr, "Lock wait for trx %lu in index ", + (ulong) ut_dulint_get_low(trx->id)); + ut_print_name(stderr, trx, FALSE, index->name); + } +#endif /* UNIV_DEBUG */ + + return(DB_LOCK_WAIT); +} + +/************************************************************************* +Adds a record lock request in the record queue. The request is normally +added as the last in the queue, but if there are no waiting lock requests +on the record, and the request to be added is not a waiting request, we +can reuse a suitable record lock object already existing on the same page, +just setting the appropriate bit in its bitmap. This is a low-level function +which does NOT check for deadlocks or lock compatibility! */ +static +lock_t* +lock_rec_add_to_queue( +/*==================*/ + /* out: lock where the bit was set */ + ulint type_mode,/* in: lock mode, wait, gap + etc. flags; type is ignored + and replaced by LOCK_REC */ + const buf_block_t* block, /* in: buffer block containing + the record */ + ulint heap_no,/* in: heap number of the record */ + dict_index_t* index, /* in: index of record */ + trx_t* trx) /* in: transaction */ +{ + lock_t* lock; + + ut_ad(mutex_own(&kernel_mutex)); +#ifdef UNIV_DEBUG + switch (type_mode & LOCK_MODE_MASK) { + case LOCK_X: + case LOCK_S: + break; + default: + ut_error; + } + + if (!(type_mode & (LOCK_WAIT | LOCK_GAP))) { + enum lock_mode mode = (type_mode & LOCK_MODE_MASK) == LOCK_S + ? LOCK_X + : LOCK_S; + lock_t* other_lock + = lock_rec_other_has_expl_req(mode, 0, LOCK_WAIT, + block, heap_no, trx); + ut_a(!other_lock); + } +#endif /* UNIV_DEBUG */ + + type_mode |= LOCK_REC; + + /* If rec is the supremum record, then we can reset the gap bit, as + all locks on the supremum are automatically of the gap type, and we + try to avoid unnecessary memory consumption of a new record lock + struct for a gap type lock */ + + if (UNIV_UNLIKELY(heap_no == PAGE_HEAP_NO_SUPREMUM)) { + ut_ad(!(type_mode & LOCK_REC_NOT_GAP)); + + /* There should never be LOCK_REC_NOT_GAP on a supremum + record, but let us play safe */ + + type_mode = type_mode & ~(LOCK_GAP | LOCK_REC_NOT_GAP); + } + + /* Look for a waiting lock request on the same record or on a gap */ + + lock = lock_rec_get_first_on_page(block); + + while (lock != NULL) { + if (lock_get_wait(lock) + && (lock_rec_get_nth_bit(lock, heap_no))) { + + goto somebody_waits; + } + + lock = lock_rec_get_next_on_page(lock); + } + + if (UNIV_LIKELY(!(type_mode & LOCK_WAIT))) { + + /* Look for a similar record lock on the same page: + if one is found and there are no waiting lock requests, + we can just set the bit */ + + lock = lock_rec_find_similar_on_page( + type_mode, heap_no, + lock_rec_get_first_on_page(block), trx); + + if (lock) { + + lock_rec_set_nth_bit(lock, heap_no); + + return(lock); + } + } + +somebody_waits: + return(lock_rec_create(type_mode, block, heap_no, index, trx)); +} + +/************************************************************************* +This is a fast routine for locking a record in the most common cases: +there are no explicit locks on the page, or there is just one lock, owned +by this transaction, and of the right type_mode. This is a low-level function +which does NOT look at implicit locks! Checks lock compatibility within +explicit locks. This function sets a normal next-key lock, or in the case of +a page supremum record, a gap type lock. */ +UNIV_INLINE +ibool +lock_rec_lock_fast( +/*===============*/ + /* out: TRUE if locking succeeded */ + ibool impl, /* in: if TRUE, no lock is set + if no wait is necessary: we + assume that the caller will + set an implicit lock */ + ulint mode, /* in: lock mode: LOCK_X or + LOCK_S possibly ORed to either + LOCK_GAP or LOCK_REC_NOT_GAP */ + const buf_block_t* block, /* in: buffer block containing + the record */ + ulint heap_no,/* in: heap number of record */ + dict_index_t* index, /* in: index of record */ + que_thr_t* thr) /* in: query thread */ +{ + lock_t* lock; + trx_t* trx; + + ut_ad(mutex_own(&kernel_mutex)); + ut_ad((LOCK_MODE_MASK & mode) != LOCK_S + || lock_table_has(thr_get_trx(thr), index->table, LOCK_IS)); + ut_ad((LOCK_MODE_MASK & mode) != LOCK_X + || lock_table_has(thr_get_trx(thr), index->table, LOCK_IX)); + ut_ad((LOCK_MODE_MASK & mode) == LOCK_S + || (LOCK_MODE_MASK & mode) == LOCK_X); + ut_ad(mode - (LOCK_MODE_MASK & mode) == LOCK_GAP + || mode - (LOCK_MODE_MASK & mode) == 0 + || mode - (LOCK_MODE_MASK & mode) == LOCK_REC_NOT_GAP); + + lock = lock_rec_get_first_on_page(block); + + trx = thr_get_trx(thr); + + if (lock == NULL) { + if (!impl) { + lock_rec_create(mode, block, heap_no, index, trx); + + if (srv_locks_unsafe_for_binlog + || trx->isolation_level + == TRX_ISO_READ_COMMITTED) { + trx_register_new_rec_lock(trx, index); + } + } + + return(TRUE); + } + + if (lock_rec_get_next_on_page(lock)) { + + return(FALSE); + } + + if (lock->trx != trx + || lock->type_mode != (mode | LOCK_REC) + || lock_rec_get_n_bits(lock) <= heap_no) { + + return(FALSE); + } + + if (!impl) { + /* If the nth bit of the record lock is already set then we + do not set a new lock bit, otherwise we do set */ + + if (!lock_rec_get_nth_bit(lock, heap_no)) { + lock_rec_set_nth_bit(lock, heap_no); + if (srv_locks_unsafe_for_binlog + || trx->isolation_level + == TRX_ISO_READ_COMMITTED) { + trx_register_new_rec_lock(trx, index); + } + } + } + + return(TRUE); +} + +/************************************************************************* +This is the general, and slower, routine for locking a record. This is a +low-level function which does NOT look at implicit locks! Checks lock +compatibility within explicit locks. This function sets a normal next-key +lock, or in the case of a page supremum record, a gap type lock. */ +static +ulint +lock_rec_lock_slow( +/*===============*/ + /* out: DB_SUCCESS, + DB_LOCK_WAIT, or error code */ + ibool impl, /* in: if TRUE, no lock is set + if no wait is necessary: we + assume that the caller will + set an implicit lock */ + ulint mode, /* in: lock mode: LOCK_X or + LOCK_S possibly ORed to either + LOCK_GAP or LOCK_REC_NOT_GAP */ + const buf_block_t* block, /* in: buffer block containing + the record */ + ulint heap_no,/* in: heap number of record */ + dict_index_t* index, /* in: index of record */ + que_thr_t* thr) /* in: query thread */ +{ + trx_t* trx; + ulint err; + + ut_ad(mutex_own(&kernel_mutex)); + ut_ad((LOCK_MODE_MASK & mode) != LOCK_S + || lock_table_has(thr_get_trx(thr), index->table, LOCK_IS)); + ut_ad((LOCK_MODE_MASK & mode) != LOCK_X + || lock_table_has(thr_get_trx(thr), index->table, LOCK_IX)); + ut_ad((LOCK_MODE_MASK & mode) == LOCK_S + || (LOCK_MODE_MASK & mode) == LOCK_X); + ut_ad(mode - (LOCK_MODE_MASK & mode) == LOCK_GAP + || mode - (LOCK_MODE_MASK & mode) == 0 + || mode - (LOCK_MODE_MASK & mode) == LOCK_REC_NOT_GAP); + + trx = thr_get_trx(thr); + + if (lock_rec_has_expl(mode, block, heap_no, trx)) { + /* The trx already has a strong enough lock on rec: do + nothing */ + + err = DB_SUCCESS; + } else if (lock_rec_other_has_conflicting(mode, block, heap_no, trx)) { + + /* If another transaction has a non-gap conflicting request in + the queue, as this transaction does not have a lock strong + enough already granted on the record, we have to wait. */ + + err = lock_rec_enqueue_waiting(mode, block, heap_no, + index, thr); + + if (srv_locks_unsafe_for_binlog + || trx->isolation_level == TRX_ISO_READ_COMMITTED) { + trx_register_new_rec_lock(trx, index); + } + } else { + if (!impl) { + /* Set the requested lock on the record */ + + lock_rec_add_to_queue(LOCK_REC | mode, block, + heap_no, index, trx); + if (srv_locks_unsafe_for_binlog + || trx->isolation_level + == TRX_ISO_READ_COMMITTED) { + trx_register_new_rec_lock(trx, index); + } + } + + err = DB_SUCCESS; + } + + return(err); +} + +/************************************************************************* +Tries to lock the specified record in the mode requested. If not immediately +possible, enqueues a waiting lock request. This is a low-level function +which does NOT look at implicit locks! Checks lock compatibility within +explicit locks. This function sets a normal next-key lock, or in the case +of a page supremum record, a gap type lock. */ +static +ulint +lock_rec_lock( +/*==========*/ + /* out: DB_SUCCESS, + DB_LOCK_WAIT, or error code */ + ibool impl, /* in: if TRUE, no lock is set + if no wait is necessary: we + assume that the caller will + set an implicit lock */ + ulint mode, /* in: lock mode: LOCK_X or + LOCK_S possibly ORed to either + LOCK_GAP or LOCK_REC_NOT_GAP */ + const buf_block_t* block, /* in: buffer block containing + the record */ + ulint heap_no,/* in: heap number of record */ + dict_index_t* index, /* in: index of record */ + que_thr_t* thr) /* in: query thread */ +{ + ulint err; + + ut_ad(mutex_own(&kernel_mutex)); + ut_ad((LOCK_MODE_MASK & mode) != LOCK_S + || lock_table_has(thr_get_trx(thr), index->table, LOCK_IS)); + ut_ad((LOCK_MODE_MASK & mode) != LOCK_X + || lock_table_has(thr_get_trx(thr), index->table, LOCK_IX)); + ut_ad((LOCK_MODE_MASK & mode) == LOCK_S + || (LOCK_MODE_MASK & mode) == LOCK_X); + ut_ad(mode - (LOCK_MODE_MASK & mode) == LOCK_GAP + || mode - (LOCK_MODE_MASK & mode) == LOCK_REC_NOT_GAP + || mode - (LOCK_MODE_MASK & mode) == 0); + + if (lock_rec_lock_fast(impl, mode, block, heap_no, index, thr)) { + + /* We try a simplified and faster subroutine for the most + common cases */ + + err = DB_SUCCESS; + } else { + err = lock_rec_lock_slow(impl, mode, block, + heap_no, index, thr); + } + + return(err); +} + +/************************************************************************* +Checks if a waiting record lock request still has to wait in a queue. */ +static +ibool +lock_rec_has_to_wait_in_queue( +/*==========================*/ + /* out: TRUE if still has to wait */ + lock_t* wait_lock) /* in: waiting record lock */ +{ + lock_t* lock; + ulint space; + ulint page_no; + ulint heap_no; + + ut_ad(mutex_own(&kernel_mutex)); + ut_ad(lock_get_wait(wait_lock)); + ut_ad(lock_get_type_low(wait_lock) == LOCK_REC); + + space = wait_lock->un_member.rec_lock.space; + page_no = wait_lock->un_member.rec_lock.page_no; + heap_no = lock_rec_find_set_bit(wait_lock); + + lock = lock_rec_get_first_on_page_addr(space, page_no); + + while (lock != wait_lock) { + + if (lock_rec_get_nth_bit(lock, heap_no) + && lock_has_to_wait(wait_lock, lock)) { + + return(TRUE); + } + + lock = lock_rec_get_next_on_page(lock); + } + + return(FALSE); +} + +/***************************************************************** +Grants a lock to a waiting lock request and releases the waiting +transaction. */ +static +void +lock_grant( +/*=======*/ + lock_t* lock) /* in/out: waiting lock request */ +{ + ut_ad(mutex_own(&kernel_mutex)); + + lock_reset_lock_and_trx_wait(lock); + + if (lock_get_mode(lock) == LOCK_AUTO_INC) { + trx_t* trx = lock->trx; + dict_table_t* table = lock->un_member.tab_lock.table; + + if (table->autoinc_trx == trx) { + fprintf(stderr, + "InnoDB: Error: trx already had" + " an AUTO-INC lock!\n"); + } else { + table->autoinc_trx = trx; + + ib_vector_push(trx->autoinc_locks, lock); + } + } + +#ifdef UNIV_DEBUG + if (lock_print_waits) { + fprintf(stderr, "Lock wait for trx %lu ends\n", + (ulong) ut_dulint_get_low(lock->trx->id)); + } +#endif /* UNIV_DEBUG */ + + /* If we are resolving a deadlock by choosing another transaction + as a victim, then our original transaction may not be in the + TRX_QUE_LOCK_WAIT state, and there is no need to end the lock wait + for it */ + + if (lock->trx->que_state == TRX_QUE_LOCK_WAIT) { + trx_end_lock_wait(lock->trx); + } +} + +/***************************************************************** +Cancels a waiting record lock request and releases the waiting transaction +that requested it. NOTE: does NOT check if waiting lock requests behind this +one can now be granted! */ +static +void +lock_rec_cancel( +/*============*/ + lock_t* lock) /* in: waiting record lock request */ +{ + ut_ad(mutex_own(&kernel_mutex)); + ut_ad(lock_get_type_low(lock) == LOCK_REC); + + /* Reset the bit (there can be only one set bit) in the lock bitmap */ + lock_rec_reset_nth_bit(lock, lock_rec_find_set_bit(lock)); + + /* Reset the wait flag and the back pointer to lock in trx */ + + lock_reset_lock_and_trx_wait(lock); + + /* The following function releases the trx from lock wait */ + + trx_end_lock_wait(lock->trx); +} + +/***************************************************************** +Removes a record lock request, waiting or granted, from the queue and +grants locks to other transactions in the queue if they now are entitled +to a lock. NOTE: all record locks contained in in_lock are removed. */ +static +void +lock_rec_dequeue_from_page( +/*=======================*/ + lock_t* in_lock)/* in: record lock object: all record locks which + are contained in this lock object are removed; + transactions waiting behind will get their lock + requests granted, if they are now qualified to it */ +{ + ulint space; + ulint page_no; + lock_t* lock; + trx_t* trx; + + ut_ad(mutex_own(&kernel_mutex)); + ut_ad(lock_get_type_low(in_lock) == LOCK_REC); + + trx = in_lock->trx; + + space = in_lock->un_member.rec_lock.space; + page_no = in_lock->un_member.rec_lock.page_no; + + HASH_DELETE(lock_t, hash, lock_sys->rec_hash, + lock_rec_fold(space, page_no), in_lock); + + UT_LIST_REMOVE(trx_locks, trx->trx_locks, in_lock); + + /* Check if waiting locks in the queue can now be granted: grant + locks if there are no conflicting locks ahead. */ + + lock = lock_rec_get_first_on_page_addr(space, page_no); + + while (lock != NULL) { + if (lock_get_wait(lock) + && !lock_rec_has_to_wait_in_queue(lock)) { + + /* Grant the lock */ + lock_grant(lock); + } + + lock = lock_rec_get_next_on_page(lock); + } +} + +/***************************************************************** +Removes a record lock request, waiting or granted, from the queue. */ +static +void +lock_rec_discard( +/*=============*/ + lock_t* in_lock)/* in: record lock object: all record locks which + are contained in this lock object are removed */ +{ + ulint space; + ulint page_no; + trx_t* trx; + + ut_ad(mutex_own(&kernel_mutex)); + ut_ad(lock_get_type_low(in_lock) == LOCK_REC); + + trx = in_lock->trx; + + space = in_lock->un_member.rec_lock.space; + page_no = in_lock->un_member.rec_lock.page_no; + + HASH_DELETE(lock_t, hash, lock_sys->rec_hash, + lock_rec_fold(space, page_no), in_lock); + + UT_LIST_REMOVE(trx_locks, trx->trx_locks, in_lock); +} + +/***************************************************************** +Removes record lock objects set on an index page which is discarded. This +function does not move locks, or check for waiting locks, therefore the +lock bitmaps must already be reset when this function is called. */ +static +void +lock_rec_free_all_from_discard_page( +/*================================*/ + const buf_block_t* block) /* in: page to be discarded */ +{ + ulint space; + ulint page_no; + lock_t* lock; + lock_t* next_lock; + + ut_ad(mutex_own(&kernel_mutex)); + + space = buf_block_get_space(block); + page_no = buf_block_get_page_no(block); + + lock = lock_rec_get_first_on_page_addr(space, page_no); + + while (lock != NULL) { + ut_ad(lock_rec_find_set_bit(lock) == ULINT_UNDEFINED); + ut_ad(!lock_get_wait(lock)); + + next_lock = lock_rec_get_next_on_page(lock); + + lock_rec_discard(lock); + + lock = next_lock; + } +} + +/*============= RECORD LOCK MOVING AND INHERITING ===================*/ + +/***************************************************************** +Resets the lock bits for a single record. Releases transactions waiting for +lock requests here. */ +static +void +lock_rec_reset_and_release_wait( +/*============================*/ + const buf_block_t* block, /* in: buffer block containing + the record */ + ulint heap_no)/* in: heap number of record */ +{ + lock_t* lock; + + ut_ad(mutex_own(&kernel_mutex)); + + lock = lock_rec_get_first(block, heap_no); + + while (lock != NULL) { + if (lock_get_wait(lock)) { + lock_rec_cancel(lock); + } else { + lock_rec_reset_nth_bit(lock, heap_no); + } + + lock = lock_rec_get_next(heap_no, lock); + } +} + +/***************************************************************** +Makes a record to inherit the locks (except LOCK_INSERT_INTENTION type) +of another record as gap type locks, but does not reset the lock bits of +the other record. Also waiting lock requests on rec are inherited as +GRANTED gap locks. */ +static +void +lock_rec_inherit_to_gap( +/*====================*/ + const buf_block_t* heir_block, /* in: block containing the + record which inherits */ + const buf_block_t* block, /* in: block containing the + record from which inherited; + does NOT reset the locks on + this record */ + ulint heir_heap_no, /* in: heap_no of the + inheriting record */ + ulint heap_no) /* in: heap_no of the + donating record */ +{ + lock_t* lock; + + ut_ad(mutex_own(&kernel_mutex)); + + lock = lock_rec_get_first(block, heap_no); + + /* If srv_locks_unsafe_for_binlog is TRUE or session is using + READ COMMITTED isolation level, we do not want locks set + by an UPDATE or a DELETE to be inherited as gap type locks. But we + DO want S-locks set by a consistency constraint to be inherited also + then. */ + + while (lock != NULL) { + if (!lock_rec_get_insert_intention(lock) + && !((srv_locks_unsafe_for_binlog + || lock->trx->isolation_level + == TRX_ISO_READ_COMMITTED) + && lock_get_mode(lock) == LOCK_X)) { + + lock_rec_add_to_queue(LOCK_REC | LOCK_GAP + | lock_get_mode(lock), + heir_block, heir_heap_no, + lock->index, lock->trx); + } + + lock = lock_rec_get_next(heap_no, lock); + } +} + +/***************************************************************** +Makes a record to inherit the gap locks (except LOCK_INSERT_INTENTION type) +of another record as gap type locks, but does not reset the lock bits of the +other record. Also waiting lock requests are inherited as GRANTED gap locks. */ +static +void +lock_rec_inherit_to_gap_if_gap_lock( +/*================================*/ + const buf_block_t* block, /* in: buffer block */ + ulint heir_heap_no, /* in: heap_no of + record which inherits */ + ulint heap_no) /* in: heap_no of record + from which inherited; + does NOT reset the locks + on this record */ +{ + lock_t* lock; + + ut_ad(mutex_own(&kernel_mutex)); + + lock = lock_rec_get_first(block, heap_no); + + while (lock != NULL) { + if (!lock_rec_get_insert_intention(lock) + && (heap_no == PAGE_HEAP_NO_SUPREMUM + || !lock_rec_get_rec_not_gap(lock))) { + + lock_rec_add_to_queue(LOCK_REC | LOCK_GAP + | lock_get_mode(lock), + block, heir_heap_no, + lock->index, lock->trx); + } + + lock = lock_rec_get_next(heap_no, lock); + } +} + +/***************************************************************** +Moves the locks of a record to another record and resets the lock bits of +the donating record. */ +static +void +lock_rec_move( +/*==========*/ + const buf_block_t* receiver, /* in: buffer block containing + the receiving record */ + const buf_block_t* donator, /* in: buffer block containing + the donating record */ + ulint receiver_heap_no,/* in: heap_no of the record + which gets the locks; there + must be no lock requests + on it! */ + ulint donator_heap_no)/* in: heap_no of the record + which gives the locks */ +{ + lock_t* lock; + + ut_ad(mutex_own(&kernel_mutex)); + + lock = lock_rec_get_first(donator, donator_heap_no); + + ut_ad(lock_rec_get_first(receiver, receiver_heap_no) == NULL); + + while (lock != NULL) { + const ulint type_mode = lock->type_mode; + + lock_rec_reset_nth_bit(lock, donator_heap_no); + + if (UNIV_UNLIKELY(type_mode & LOCK_WAIT)) { + lock_reset_lock_and_trx_wait(lock); + } + + /* Note that we FIRST reset the bit, and then set the lock: + the function works also if donator == receiver */ + + lock_rec_add_to_queue(type_mode, receiver, receiver_heap_no, + lock->index, lock->trx); + lock = lock_rec_get_next(donator_heap_no, lock); + } + + ut_ad(lock_rec_get_first(donator, donator_heap_no) == NULL); +} + +/***************************************************************** +Updates the lock table when we have reorganized a page. NOTE: we copy +also the locks set on the infimum of the page; the infimum may carry +locks if an update of a record is occurring on the page, and its locks +were temporarily stored on the infimum. */ +UNIV_INTERN +void +lock_move_reorganize_page( +/*======================*/ + const buf_block_t* block, /* in: old index page, now + reorganized */ + const buf_block_t* oblock) /* in: copy of the old, not + reorganized page */ +{ + lock_t* lock; + UT_LIST_BASE_NODE_T(lock_t) old_locks; + mem_heap_t* heap = NULL; + ulint comp; + + lock_mutex_enter_kernel(); + + lock = lock_rec_get_first_on_page(block); + + if (lock == NULL) { + lock_mutex_exit_kernel(); + + return; + } + + heap = mem_heap_create(256); + + /* Copy first all the locks on the page to heap and reset the + bitmaps in the original locks; chain the copies of the locks + using the trx_locks field in them. */ + + UT_LIST_INIT(old_locks); + + do { + /* Make a copy of the lock */ + lock_t* old_lock = lock_rec_copy(lock, heap); + + UT_LIST_ADD_LAST(trx_locks, old_locks, old_lock); + + /* Reset bitmap of lock */ + lock_rec_bitmap_reset(lock); + + if (lock_get_wait(lock)) { + lock_reset_lock_and_trx_wait(lock); + } + + lock = lock_rec_get_next_on_page(lock); + } while (lock != NULL); + + comp = page_is_comp(block->frame); + ut_ad(comp == page_is_comp(oblock->frame)); + + for (lock = UT_LIST_GET_FIRST(old_locks); lock; + lock = UT_LIST_GET_NEXT(trx_locks, lock)) { + /* NOTE: we copy also the locks set on the infimum and + supremum of the page; the infimum may carry locks if an + update of a record is occurring on the page, and its locks + were temporarily stored on the infimum */ + page_cur_t cur1; + page_cur_t cur2; + + page_cur_set_before_first(block, &cur1); + page_cur_set_before_first(oblock, &cur2); + + /* Set locks according to old locks */ + for (;;) { + ulint old_heap_no; + ulint new_heap_no; + + ut_ad(comp || !memcmp(page_cur_get_rec(&cur1), + page_cur_get_rec(&cur2), + rec_get_data_size_old( + page_cur_get_rec( + &cur2)))); + if (UNIV_LIKELY(comp)) { + old_heap_no = rec_get_heap_no_new( + page_cur_get_rec(&cur2)); + new_heap_no = rec_get_heap_no_new( + page_cur_get_rec(&cur1)); + } else { + old_heap_no = rec_get_heap_no_old( + page_cur_get_rec(&cur2)); + new_heap_no = rec_get_heap_no_old( + page_cur_get_rec(&cur1)); + } + + if (lock_rec_get_nth_bit(lock, old_heap_no)) { + + /* Clear the bit in old_lock. */ + ut_d(lock_rec_reset_nth_bit(lock, + old_heap_no)); + + /* NOTE that the old lock bitmap could be too + small for the new heap number! */ + + lock_rec_add_to_queue(lock->type_mode, block, + new_heap_no, + lock->index, lock->trx); + + /* if (new_heap_no == PAGE_HEAP_NO_SUPREMUM + && lock_get_wait(lock)) { + fprintf(stderr, + "---\n--\n!!!Lock reorg: supr type %lu\n", + lock->type_mode); + } */ + } + + if (UNIV_UNLIKELY + (new_heap_no == PAGE_HEAP_NO_SUPREMUM)) { + + ut_ad(old_heap_no == PAGE_HEAP_NO_SUPREMUM); + break; + } + + page_cur_move_to_next(&cur1); + page_cur_move_to_next(&cur2); + } + +#ifdef UNIV_DEBUG + { + ulint i = lock_rec_find_set_bit(lock); + + /* Check that all locks were moved. */ + if (UNIV_UNLIKELY(i != ULINT_UNDEFINED)) { + fprintf(stderr, + "lock_move_reorganize_page():" + " %lu not moved in %p\n", + (ulong) i, (void*) lock); + ut_error; + } + } +#endif /* UNIV_DEBUG */ + } + + lock_mutex_exit_kernel(); + + mem_heap_free(heap); + +#ifdef UNIV_DEBUG_LOCK_VALIDATE + ut_ad(lock_rec_validate_page(buf_block_get_space(block), + buf_block_get_page_no(block))); +#endif +} + +/***************************************************************** +Moves the explicit locks on user records to another page if a record +list end is moved to another page. */ +UNIV_INTERN +void +lock_move_rec_list_end( +/*===================*/ + const buf_block_t* new_block, /* in: index page to move to */ + const buf_block_t* block, /* in: index page */ + const rec_t* rec) /* in: record on page: this + is the first record moved */ +{ + lock_t* lock; + const ulint comp = page_rec_is_comp(rec); + + lock_mutex_enter_kernel(); + + /* Note: when we move locks from record to record, waiting locks + and possible granted gap type locks behind them are enqueued in + the original order, because new elements are inserted to a hash + table to the end of the hash chain, and lock_rec_add_to_queue + does not reuse locks if there are waiters in the queue. */ + + for (lock = lock_rec_get_first_on_page(block); lock; + lock = lock_rec_get_next_on_page(lock)) { + page_cur_t cur1; + page_cur_t cur2; + const ulint type_mode = lock->type_mode; + + page_cur_position(rec, block, &cur1); + + if (page_cur_is_before_first(&cur1)) { + page_cur_move_to_next(&cur1); + } + + page_cur_set_before_first(new_block, &cur2); + page_cur_move_to_next(&cur2); + + /* Copy lock requests on user records to new page and + reset the lock bits on the old */ + + while (!page_cur_is_after_last(&cur1)) { + ulint heap_no; + + if (comp) { + heap_no = rec_get_heap_no_new( + page_cur_get_rec(&cur1)); + } else { + heap_no = rec_get_heap_no_old( + page_cur_get_rec(&cur1)); + ut_ad(!memcmp(page_cur_get_rec(&cur1), + page_cur_get_rec(&cur2), + rec_get_data_size_old( + page_cur_get_rec(&cur2)))); + } + + if (lock_rec_get_nth_bit(lock, heap_no)) { + lock_rec_reset_nth_bit(lock, heap_no); + + if (UNIV_UNLIKELY(type_mode & LOCK_WAIT)) { + lock_reset_lock_and_trx_wait(lock); + } + + if (comp) { + heap_no = rec_get_heap_no_new( + page_cur_get_rec(&cur2)); + } else { + heap_no = rec_get_heap_no_old( + page_cur_get_rec(&cur2)); + } + + lock_rec_add_to_queue(type_mode, + new_block, heap_no, + lock->index, lock->trx); + } + + page_cur_move_to_next(&cur1); + page_cur_move_to_next(&cur2); + } + } + + lock_mutex_exit_kernel(); + +#ifdef UNIV_DEBUG_LOCK_VALIDATE + ut_ad(lock_rec_validate_page(buf_block_get_space(block), + buf_block_get_page_no(block))); + ut_ad(lock_rec_validate_page(buf_block_get_space(new_block), + buf_block_get_page_no(new_block))); +#endif +} + +/***************************************************************** +Moves the explicit locks on user records to another page if a record +list start is moved to another page. */ +UNIV_INTERN +void +lock_move_rec_list_start( +/*=====================*/ + const buf_block_t* new_block, /* in: index page to move to */ + const buf_block_t* block, /* in: index page */ + const rec_t* rec, /* in: record on page: + this is the first + record NOT copied */ + const rec_t* old_end) /* in: old + previous-to-last + record on new_page + before the records + were copied */ +{ + lock_t* lock; + const ulint comp = page_rec_is_comp(rec); + + ut_ad(block->frame == page_align(rec)); + ut_ad(new_block->frame == page_align(old_end)); + + lock_mutex_enter_kernel(); + + for (lock = lock_rec_get_first_on_page(block); lock; + lock = lock_rec_get_next_on_page(lock)) { + page_cur_t cur1; + page_cur_t cur2; + const ulint type_mode = lock->type_mode; + + page_cur_set_before_first(block, &cur1); + page_cur_move_to_next(&cur1); + + page_cur_position(old_end, new_block, &cur2); + page_cur_move_to_next(&cur2); + + /* Copy lock requests on user records to new page and + reset the lock bits on the old */ + + while (page_cur_get_rec(&cur1) != rec) { + ulint heap_no; + + if (comp) { + heap_no = rec_get_heap_no_new( + page_cur_get_rec(&cur1)); + } else { + heap_no = rec_get_heap_no_old( + page_cur_get_rec(&cur1)); + ut_ad(!memcmp(page_cur_get_rec(&cur1), + page_cur_get_rec(&cur2), + rec_get_data_size_old( + page_cur_get_rec( + &cur2)))); + } + + if (lock_rec_get_nth_bit(lock, heap_no)) { + lock_rec_reset_nth_bit(lock, heap_no); + + if (UNIV_UNLIKELY(type_mode & LOCK_WAIT)) { + lock_reset_lock_and_trx_wait(lock); + } + + if (comp) { + heap_no = rec_get_heap_no_new( + page_cur_get_rec(&cur2)); + } else { + heap_no = rec_get_heap_no_old( + page_cur_get_rec(&cur2)); + } + + lock_rec_add_to_queue(type_mode, + new_block, heap_no, + lock->index, lock->trx); + } + + page_cur_move_to_next(&cur1); + page_cur_move_to_next(&cur2); + } + +#ifdef UNIV_DEBUG + if (page_rec_is_supremum(rec)) { + ulint i; + + for (i = PAGE_HEAP_NO_USER_LOW; + i < lock_rec_get_n_bits(lock); i++) { + if (UNIV_UNLIKELY + (lock_rec_get_nth_bit(lock, i))) { + + fprintf(stderr, + "lock_move_rec_list_start():" + " %lu not moved in %p\n", + (ulong) i, (void*) lock); + ut_error; + } + } + } +#endif /* UNIV_DEBUG */ + } + + lock_mutex_exit_kernel(); + +#ifdef UNIV_DEBUG_LOCK_VALIDATE + ut_ad(lock_rec_validate_page(buf_block_get_space(block), + buf_block_get_page_no(block))); +#endif +} + +/***************************************************************** +Updates the lock table when a page is split to the right. */ +UNIV_INTERN +void +lock_update_split_right( +/*====================*/ + const buf_block_t* right_block, /* in: right page */ + const buf_block_t* left_block) /* in: left page */ +{ + ulint heap_no = lock_get_min_heap_no(right_block); + + lock_mutex_enter_kernel(); + + /* Move the locks on the supremum of the left page to the supremum + of the right page */ + + lock_rec_move(right_block, left_block, + PAGE_HEAP_NO_SUPREMUM, PAGE_HEAP_NO_SUPREMUM); + + /* Inherit the locks to the supremum of left page from the successor + of the infimum on right page */ + + lock_rec_inherit_to_gap(left_block, right_block, + PAGE_HEAP_NO_SUPREMUM, heap_no); + + lock_mutex_exit_kernel(); +} + +/***************************************************************** +Updates the lock table when a page is merged to the right. */ +UNIV_INTERN +void +lock_update_merge_right( +/*====================*/ + const buf_block_t* right_block, /* in: right page to + which merged */ + const rec_t* orig_succ, /* in: original + successor of infimum + on the right page + before merge */ + const buf_block_t* left_block) /* in: merged index + page which will be + discarded */ +{ + lock_mutex_enter_kernel(); + + /* Inherit the locks from the supremum of the left page to the + original successor of infimum on the right page, to which the left + page was merged */ + + lock_rec_inherit_to_gap(right_block, left_block, + page_rec_get_heap_no(orig_succ), + PAGE_HEAP_NO_SUPREMUM); + + /* Reset the locks on the supremum of the left page, releasing + waiting transactions */ + + lock_rec_reset_and_release_wait(left_block, + PAGE_HEAP_NO_SUPREMUM); + + lock_rec_free_all_from_discard_page(left_block); + + lock_mutex_exit_kernel(); +} + +/***************************************************************** +Updates the lock table when the root page is copied to another in +btr_root_raise_and_insert. Note that we leave lock structs on the +root page, even though they do not make sense on other than leaf +pages: the reason is that in a pessimistic update the infimum record +of the root page will act as a dummy carrier of the locks of the record +to be updated. */ +UNIV_INTERN +void +lock_update_root_raise( +/*===================*/ + const buf_block_t* block, /* in: index page to which copied */ + const buf_block_t* root) /* in: root page */ +{ + lock_mutex_enter_kernel(); + + /* Move the locks on the supremum of the root to the supremum + of block */ + + lock_rec_move(block, root, + PAGE_HEAP_NO_SUPREMUM, PAGE_HEAP_NO_SUPREMUM); + lock_mutex_exit_kernel(); +} + +/***************************************************************** +Updates the lock table when a page is copied to another and the original page +is removed from the chain of leaf pages, except if page is the root! */ +UNIV_INTERN +void +lock_update_copy_and_discard( +/*=========================*/ + const buf_block_t* new_block, /* in: index page to + which copied */ + const buf_block_t* block) /* in: index page; + NOT the root! */ +{ + lock_mutex_enter_kernel(); + + /* Move the locks on the supremum of the old page to the supremum + of new_page */ + + lock_rec_move(new_block, block, + PAGE_HEAP_NO_SUPREMUM, PAGE_HEAP_NO_SUPREMUM); + lock_rec_free_all_from_discard_page(block); + + lock_mutex_exit_kernel(); +} + +/***************************************************************** +Updates the lock table when a page is split to the left. */ +UNIV_INTERN +void +lock_update_split_left( +/*===================*/ + const buf_block_t* right_block, /* in: right page */ + const buf_block_t* left_block) /* in: left page */ +{ + ulint heap_no = lock_get_min_heap_no(right_block); + + lock_mutex_enter_kernel(); + + /* Inherit the locks to the supremum of the left page from the + successor of the infimum on the right page */ + + lock_rec_inherit_to_gap(left_block, right_block, + PAGE_HEAP_NO_SUPREMUM, heap_no); + + lock_mutex_exit_kernel(); +} + +/***************************************************************** +Updates the lock table when a page is merged to the left. */ +UNIV_INTERN +void +lock_update_merge_left( +/*===================*/ + const buf_block_t* left_block, /* in: left page to + which merged */ + const rec_t* orig_pred, /* in: original predecessor + of supremum on the left page + before merge */ + const buf_block_t* right_block) /* in: merged index page + which will be discarded */ +{ + const rec_t* left_next_rec; + + ut_ad(left_block->frame == page_align(orig_pred)); + + lock_mutex_enter_kernel(); + + left_next_rec = page_rec_get_next_const(orig_pred); + + if (!page_rec_is_supremum(left_next_rec)) { + + /* Inherit the locks on the supremum of the left page to the + first record which was moved from the right page */ + + lock_rec_inherit_to_gap(left_block, left_block, + page_rec_get_heap_no(left_next_rec), + PAGE_HEAP_NO_SUPREMUM); + + /* Reset the locks on the supremum of the left page, + releasing waiting transactions */ + + lock_rec_reset_and_release_wait(left_block, + PAGE_HEAP_NO_SUPREMUM); + } + + /* Move the locks from the supremum of right page to the supremum + of the left page */ + + lock_rec_move(left_block, right_block, + PAGE_HEAP_NO_SUPREMUM, PAGE_HEAP_NO_SUPREMUM); + + lock_rec_free_all_from_discard_page(right_block); + + lock_mutex_exit_kernel(); +} + +/***************************************************************** +Resets the original locks on heir and replaces them with gap type locks +inherited from rec. */ +UNIV_INTERN +void +lock_rec_reset_and_inherit_gap_locks( +/*=================================*/ + const buf_block_t* heir_block, /* in: block containing the + record which inherits */ + const buf_block_t* block, /* in: block containing the + record from which inherited; + does NOT reset the locks on + this record */ + ulint heir_heap_no, /* in: heap_no of the + inheriting record */ + ulint heap_no) /* in: heap_no of the + donating record */ +{ + mutex_enter(&kernel_mutex); + + lock_rec_reset_and_release_wait(heir_block, heir_heap_no); + + lock_rec_inherit_to_gap(heir_block, block, heir_heap_no, heap_no); + + mutex_exit(&kernel_mutex); +} + +/***************************************************************** +Updates the lock table when a page is discarded. */ +UNIV_INTERN +void +lock_update_discard( +/*================*/ + const buf_block_t* heir_block, /* in: index page + which will inherit the locks */ + ulint heir_heap_no, /* in: heap_no of the record + which will inherit the locks */ + const buf_block_t* block) /* in: index page + which will be discarded */ +{ + const page_t* page = block->frame; + const rec_t* rec; + ulint heap_no; + + lock_mutex_enter_kernel(); + + if (!lock_rec_get_first_on_page(block)) { + /* No locks exist on page, nothing to do */ + + lock_mutex_exit_kernel(); + + return; + } + + /* Inherit all the locks on the page to the record and reset all + the locks on the page */ + + if (page_is_comp(page)) { + rec = page + PAGE_NEW_INFIMUM; + + do { + heap_no = rec_get_heap_no_new(rec); + + lock_rec_inherit_to_gap(heir_block, block, + heir_heap_no, heap_no); + + lock_rec_reset_and_release_wait(block, heap_no); + + rec = page + rec_get_next_offs(rec, TRUE); + } while (heap_no != PAGE_HEAP_NO_SUPREMUM); + } else { + rec = page + PAGE_OLD_INFIMUM; + + do { + heap_no = rec_get_heap_no_old(rec); + + lock_rec_inherit_to_gap(heir_block, block, + heir_heap_no, heap_no); + + lock_rec_reset_and_release_wait(block, heap_no); + + rec = page + rec_get_next_offs(rec, FALSE); + } while (heap_no != PAGE_HEAP_NO_SUPREMUM); + } + + lock_rec_free_all_from_discard_page(block); + + lock_mutex_exit_kernel(); +} + +/***************************************************************** +Updates the lock table when a new user record is inserted. */ +UNIV_INTERN +void +lock_update_insert( +/*===============*/ + const buf_block_t* block, /* in: buffer block containing rec */ + const rec_t* rec) /* in: the inserted record */ +{ + ulint receiver_heap_no; + ulint donator_heap_no; + + ut_ad(block->frame == page_align(rec)); + + /* Inherit the gap-locking locks for rec, in gap mode, from the next + record */ + + if (page_rec_is_comp(rec)) { + receiver_heap_no = rec_get_heap_no_new(rec); + donator_heap_no = rec_get_heap_no_new( + page_rec_get_next_low(rec, TRUE)); + } else { + receiver_heap_no = rec_get_heap_no_old(rec); + donator_heap_no = rec_get_heap_no_old( + page_rec_get_next_low(rec, FALSE)); + } + + lock_mutex_enter_kernel(); + lock_rec_inherit_to_gap_if_gap_lock(block, + receiver_heap_no, donator_heap_no); + lock_mutex_exit_kernel(); +} + +/***************************************************************** +Updates the lock table when a record is removed. */ +UNIV_INTERN +void +lock_update_delete( +/*===============*/ + const buf_block_t* block, /* in: buffer block containing rec */ + const rec_t* rec) /* in: the record to be removed */ +{ + const page_t* page = block->frame; + ulint heap_no; + ulint next_heap_no; + + ut_ad(page == page_align(rec)); + + if (page_is_comp(page)) { + heap_no = rec_get_heap_no_new(rec); + next_heap_no = rec_get_heap_no_new(page + + rec_get_next_offs(rec, + TRUE)); + } else { + heap_no = rec_get_heap_no_old(rec); + next_heap_no = rec_get_heap_no_old(page + + rec_get_next_offs(rec, + FALSE)); + } + + lock_mutex_enter_kernel(); + + /* Let the next record inherit the locks from rec, in gap mode */ + + lock_rec_inherit_to_gap(block, block, next_heap_no, heap_no); + + /* Reset the lock bits on rec and release waiting transactions */ + + lock_rec_reset_and_release_wait(block, heap_no); + + lock_mutex_exit_kernel(); +} + +/************************************************************************* +Stores on the page infimum record the explicit locks of another record. +This function is used to store the lock state of a record when it is +updated and the size of the record changes in the update. The record +is moved in such an update, perhaps to another page. The infimum record +acts as a dummy carrier record, taking care of lock releases while the +actual record is being moved. */ +UNIV_INTERN +void +lock_rec_store_on_page_infimum( +/*===========================*/ + const buf_block_t* block, /* in: buffer block containing rec */ + const rec_t* rec) /* in: record whose lock state + is stored on the infimum + record of the same page; lock + bits are reset on the + record */ +{ + ulint heap_no = page_rec_get_heap_no(rec); + + ut_ad(block->frame == page_align(rec)); + + lock_mutex_enter_kernel(); + + lock_rec_move(block, block, PAGE_HEAP_NO_INFIMUM, heap_no); + + lock_mutex_exit_kernel(); +} + +/************************************************************************* +Restores the state of explicit lock requests on a single record, where the +state was stored on the infimum of the page. */ +UNIV_INTERN +void +lock_rec_restore_from_page_infimum( +/*===============================*/ + const buf_block_t* block, /* in: buffer block containing rec */ + const rec_t* rec, /* in: record whose lock state + is restored */ + const buf_block_t* donator)/* in: page (rec is not + necessarily on this page) + whose infimum stored the lock + state; lock bits are reset on + the infimum */ +{ + ulint heap_no = page_rec_get_heap_no(rec); + + lock_mutex_enter_kernel(); + + lock_rec_move(block, donator, heap_no, PAGE_HEAP_NO_INFIMUM); + + lock_mutex_exit_kernel(); +} + +/*=========== DEADLOCK CHECKING ======================================*/ + +/************************************************************************ +Checks if a lock request results in a deadlock. */ +static +ibool +lock_deadlock_occurs( +/*=================*/ + /* out: TRUE if a deadlock was detected and we + chose trx as a victim; FALSE if no deadlock, or + there was a deadlock, but we chose other + transaction(s) as victim(s) */ + lock_t* lock, /* in: lock the transaction is requesting */ + trx_t* trx) /* in: transaction */ +{ + dict_table_t* table; + dict_index_t* index; + trx_t* mark_trx; + ulint ret; + ulint cost = 0; + + ut_ad(trx); + ut_ad(lock); + ut_ad(mutex_own(&kernel_mutex)); +retry: + /* We check that adding this trx to the waits-for graph + does not produce a cycle. First mark all active transactions + with 0: */ + + mark_trx = UT_LIST_GET_FIRST(trx_sys->trx_list); + + while (mark_trx) { + mark_trx->deadlock_mark = 0; + mark_trx = UT_LIST_GET_NEXT(trx_list, mark_trx); + } + + ret = lock_deadlock_recursive(trx, trx, lock, &cost, 0); + + if (ret == LOCK_VICTIM_IS_OTHER) { + /* We chose some other trx as a victim: retry if there still + is a deadlock */ + + goto retry; + } + + if (UNIV_UNLIKELY(ret == LOCK_VICTIM_IS_START)) { + if (lock_get_type_low(lock) & LOCK_TABLE) { + table = lock->un_member.tab_lock.table; + index = NULL; + } else { + index = lock->index; + table = index->table; + } + + lock_deadlock_found = TRUE; + + fputs("*** WE ROLL BACK TRANSACTION (2)\n", + lock_latest_err_file); + + return(TRUE); + } + + return(FALSE); +} + +/************************************************************************ +Looks recursively for a deadlock. */ +static +ulint +lock_deadlock_recursive( +/*====================*/ + /* out: 0 if no deadlock found, + LOCK_VICTIM_IS_START if there was a deadlock + and we chose 'start' as the victim, + LOCK_VICTIM_IS_OTHER if a deadlock + was found and we chose some other trx as a + victim: we must do the search again in this + last case because there may be another + deadlock! */ + trx_t* start, /* in: recursion starting point */ + trx_t* trx, /* in: a transaction waiting for a lock */ + lock_t* wait_lock, /* in: the lock trx is waiting to be granted */ + ulint* cost, /* in/out: number of calculation steps thus + far: if this exceeds LOCK_MAX_N_STEPS_... + we return LOCK_VICTIM_IS_START */ + ulint depth) /* in: recursion depth: if this exceeds + LOCK_MAX_DEPTH_IN_DEADLOCK_CHECK, we + return LOCK_VICTIM_IS_START */ +{ + lock_t* lock; + ulint bit_no = ULINT_UNDEFINED; + trx_t* lock_trx; + ulint ret; + + ut_a(trx); + ut_a(start); + ut_a(wait_lock); + ut_ad(mutex_own(&kernel_mutex)); + + if (trx->deadlock_mark == 1) { + /* We have already exhaustively searched the subtree starting + from this trx */ + + return(0); + } + + *cost = *cost + 1; + + lock = wait_lock; + + if (lock_get_type_low(wait_lock) == LOCK_REC) { + + bit_no = lock_rec_find_set_bit(wait_lock); + + ut_a(bit_no != ULINT_UNDEFINED); + } + + /* Look at the locks ahead of wait_lock in the lock queue */ + + for (;;) { + if (lock_get_type_low(lock) & LOCK_TABLE) { + + lock = UT_LIST_GET_PREV(un_member.tab_lock.locks, + lock); + } else { + ut_ad(lock_get_type_low(lock) == LOCK_REC); + ut_a(bit_no != ULINT_UNDEFINED); + + lock = (lock_t*) lock_rec_get_prev(lock, bit_no); + } + + if (lock == NULL) { + /* We can mark this subtree as searched */ + trx->deadlock_mark = 1; + + return(FALSE); + } + + if (lock_has_to_wait(wait_lock, lock)) { + + ibool too_far + = depth > LOCK_MAX_DEPTH_IN_DEADLOCK_CHECK + || *cost > LOCK_MAX_N_STEPS_IN_DEADLOCK_CHECK; + + lock_trx = lock->trx; + + if (lock_trx == start || too_far) { + + /* We came back to the recursion starting + point: a deadlock detected; or we have + searched the waits-for graph too long */ + + FILE* ef = lock_latest_err_file; + + rewind(ef); + ut_print_timestamp(ef); + + fputs("\n*** (1) TRANSACTION:\n", ef); + + trx_print(ef, wait_lock->trx, 3000); + + fputs("*** (1) WAITING FOR THIS LOCK" + " TO BE GRANTED:\n", ef); + + if (lock_get_type_low(wait_lock) == LOCK_REC) { + lock_rec_print(ef, wait_lock); + } else { + lock_table_print(ef, wait_lock); + } + + fputs("*** (2) TRANSACTION:\n", ef); + + trx_print(ef, lock->trx, 3000); + + fputs("*** (2) HOLDS THE LOCK(S):\n", ef); + + if (lock_get_type_low(lock) == LOCK_REC) { + lock_rec_print(ef, lock); + } else { + lock_table_print(ef, lock); + } + + fputs("*** (2) WAITING FOR THIS LOCK" + " TO BE GRANTED:\n", ef); + + if (lock_get_type_low(start->wait_lock) + == LOCK_REC) { + lock_rec_print(ef, start->wait_lock); + } else { + lock_table_print(ef, start->wait_lock); + } +#ifdef UNIV_DEBUG + if (lock_print_waits) { + fputs("Deadlock detected" + " or too long search\n", + stderr); + } +#endif /* UNIV_DEBUG */ + if (too_far) { + + fputs("TOO DEEP OR LONG SEARCH" + " IN THE LOCK TABLE" + " WAITS-FOR GRAPH\n", ef); + + return(LOCK_VICTIM_IS_START); + } + + if (trx_weight_cmp(wait_lock->trx, + start) >= 0) { + /* Our recursion starting point + transaction is 'smaller', let us + choose 'start' as the victim and roll + back it */ + + return(LOCK_VICTIM_IS_START); + } + + lock_deadlock_found = TRUE; + + /* Let us choose the transaction of wait_lock + as a victim to try to avoid deadlocking our + recursion starting point transaction */ + + fputs("*** WE ROLL BACK TRANSACTION (1)\n", + ef); + + wait_lock->trx->was_chosen_as_deadlock_victim + = TRUE; + + lock_cancel_waiting_and_release(wait_lock); + + /* Since trx and wait_lock are no longer + in the waits-for graph, we can return FALSE; + note that our selective algorithm can choose + several transactions as victims, but still + we may end up rolling back also the recursion + starting point transaction! */ + + return(LOCK_VICTIM_IS_OTHER); + } + + if (lock_trx->que_state == TRX_QUE_LOCK_WAIT) { + + /* Another trx ahead has requested lock in an + incompatible mode, and is itself waiting for + a lock */ + + ret = lock_deadlock_recursive( + start, lock_trx, + lock_trx->wait_lock, cost, depth + 1); + if (ret != 0) { + + return(ret); + } + } + } + }/* end of the 'for (;;)'-loop */ +} + +/*========================= TABLE LOCKS ==============================*/ + +/************************************************************************* +Creates a table lock object and adds it as the last in the lock queue +of the table. Does NOT check for deadlocks or lock compatibility. */ +UNIV_INLINE +lock_t* +lock_table_create( +/*==============*/ + /* out, own: new lock object */ + dict_table_t* table, /* in: database table in dictionary cache */ + ulint type_mode,/* in: lock mode possibly ORed with + LOCK_WAIT */ + trx_t* trx) /* in: trx */ +{ + lock_t* lock; + + ut_ad(table && trx); + ut_ad(mutex_own(&kernel_mutex)); + + if ((type_mode & LOCK_MODE_MASK) == LOCK_AUTO_INC) { + ++table->n_waiting_or_granted_auto_inc_locks; + } + + /* For AUTOINC locking we reuse the lock instance only if + there is no wait involved else we allocate the waiting lock + from the transaction lock heap. */ + if (type_mode == LOCK_AUTO_INC) { + + lock = table->autoinc_lock; + + table->autoinc_trx = trx; + + ib_vector_push(trx->autoinc_locks, lock); + } else { + lock = mem_heap_alloc(trx->lock_heap, sizeof(lock_t)); + } + + UT_LIST_ADD_LAST(trx_locks, trx->trx_locks, lock); + + lock->type_mode = type_mode | LOCK_TABLE; + lock->trx = trx; + + lock->un_member.tab_lock.table = table; + + UT_LIST_ADD_LAST(un_member.tab_lock.locks, table->locks, lock); + + if (UNIV_UNLIKELY(type_mode & LOCK_WAIT)) { + + lock_set_lock_and_trx_wait(lock, trx); + } + + return(lock); +} + +/***************************************************************** +Removes a table lock request from the queue and the trx list of locks; +this is a low-level function which does NOT check if waiting requests +can now be granted. */ +UNIV_INLINE +void +lock_table_remove_low( +/*==================*/ + lock_t* lock) /* in: table lock */ +{ + trx_t* trx; + dict_table_t* table; + + ut_ad(mutex_own(&kernel_mutex)); + + trx = lock->trx; + table = lock->un_member.tab_lock.table; + + /* Remove the table from the transaction's AUTOINC vector, if + the lock that is being release is an AUTOINC lock. */ + if (lock_get_mode(lock) == LOCK_AUTO_INC) { + + /* The table's AUTOINC lock can get transferred to + another transaction before we get here. */ + if (table->autoinc_trx == trx) { + table->autoinc_trx = NULL; + } + + /* The locks must be freed in the reverse order from + the one in which they were acquired. This is to avoid + traversing the AUTOINC lock vector unnecessarily. + + We only store locks that were granted in the + trx->autoinc_locks vector (see lock_table_create() + and lock_grant()). Therefore it can be empty and we + need to check for that. */ + + if (!ib_vector_is_empty(trx->autoinc_locks)) { + lock_t* autoinc_lock; + + autoinc_lock = ib_vector_pop(trx->autoinc_locks); + ut_a(autoinc_lock == lock); + } + + ut_a(table->n_waiting_or_granted_auto_inc_locks > 0); + --table->n_waiting_or_granted_auto_inc_locks; + } + + UT_LIST_REMOVE(trx_locks, trx->trx_locks, lock); + UT_LIST_REMOVE(un_member.tab_lock.locks, table->locks, lock); +} + +/************************************************************************* +Enqueues a waiting request for a table lock which cannot be granted +immediately. Checks for deadlocks. */ +static +ulint +lock_table_enqueue_waiting( +/*=======================*/ + /* out: DB_LOCK_WAIT, DB_DEADLOCK, or + DB_QUE_THR_SUSPENDED, or DB_SUCCESS; + DB_SUCCESS means that there was a deadlock, + but another transaction was chosen as a + victim, and we got the lock immediately: + no need to wait then */ + ulint mode, /* in: lock mode this transaction is + requesting */ + dict_table_t* table, /* in: table */ + que_thr_t* thr) /* in: query thread */ +{ + lock_t* lock; + trx_t* trx; + + ut_ad(mutex_own(&kernel_mutex)); + + /* Test if there already is some other reason to suspend thread: + we do not enqueue a lock request if the query thread should be + stopped anyway */ + + if (que_thr_stop(thr)) { + ut_error; + + return(DB_QUE_THR_SUSPENDED); + } + + trx = thr_get_trx(thr); + + switch (trx_get_dict_operation(trx)) { + case TRX_DICT_OP_NONE: + break; + case TRX_DICT_OP_TABLE: + case TRX_DICT_OP_INDEX: + ut_print_timestamp(stderr); + fputs(" InnoDB: Error: a table lock wait happens" + " in a dictionary operation!\n" + "InnoDB: Table name ", stderr); + ut_print_name(stderr, trx, TRUE, table->name); + fputs(".\n" + "InnoDB: Submit a detailed bug report" + " to http://bugs.mysql.com\n", + stderr); + } + + /* Enqueue the lock request that will wait to be granted */ + + lock = lock_table_create(table, mode | LOCK_WAIT, trx); + + /* Check if a deadlock occurs: if yes, remove the lock request and + return an error code */ + + if (lock_deadlock_occurs(lock, trx)) { + + lock_reset_lock_and_trx_wait(lock); + lock_table_remove_low(lock); + + return(DB_DEADLOCK); + } + + if (trx->wait_lock == NULL) { + /* Deadlock resolution chose another transaction as a victim, + and we accidentally got our lock granted! */ + + return(DB_SUCCESS); + } + + trx->que_state = TRX_QUE_LOCK_WAIT; + trx->was_chosen_as_deadlock_victim = FALSE; + trx->wait_started = time(NULL); + + ut_a(que_thr_stop(thr)); + + return(DB_LOCK_WAIT); +} + +/************************************************************************* +Checks if other transactions have an incompatible mode lock request in +the lock queue. */ +UNIV_INLINE +ibool +lock_table_other_has_incompatible( +/*==============================*/ + trx_t* trx, /* in: transaction, or NULL if all + transactions should be included */ + ulint wait, /* in: LOCK_WAIT if also waiting locks are + taken into account, or 0 if not */ + dict_table_t* table, /* in: table */ + enum lock_mode mode) /* in: lock mode */ +{ + lock_t* lock; + + ut_ad(mutex_own(&kernel_mutex)); + + lock = UT_LIST_GET_LAST(table->locks); + + while (lock != NULL) { + + if ((lock->trx != trx) + && (!lock_mode_compatible(lock_get_mode(lock), mode)) + && (wait || !(lock_get_wait(lock)))) { + + return(TRUE); + } + + lock = UT_LIST_GET_PREV(un_member.tab_lock.locks, lock); + } + + return(FALSE); +} + +/************************************************************************* +Locks the specified database table in the mode given. If the lock cannot +be granted immediately, the query thread is put to wait. */ +UNIV_INTERN +ulint +lock_table( +/*=======*/ + /* out: DB_SUCCESS, DB_LOCK_WAIT, + DB_DEADLOCK, or DB_QUE_THR_SUSPENDED */ + ulint flags, /* in: if BTR_NO_LOCKING_FLAG bit is set, + does nothing */ + dict_table_t* table, /* in: database table in dictionary cache */ + enum lock_mode mode, /* in: lock mode */ + que_thr_t* thr) /* in: query thread */ +{ + trx_t* trx; + ulint err; + + ut_ad(table && thr); + + if (flags & BTR_NO_LOCKING_FLAG) { + + return(DB_SUCCESS); + } + + ut_a(flags == 0); + + trx = thr_get_trx(thr); + + lock_mutex_enter_kernel(); + + /* Look for stronger locks the same trx already has on the table */ + + if (lock_table_has(trx, table, mode)) { + + lock_mutex_exit_kernel(); + + return(DB_SUCCESS); + } + + /* We have to check if the new lock is compatible with any locks + other transactions have in the table lock queue. */ + + if (lock_table_other_has_incompatible(trx, LOCK_WAIT, table, mode)) { + + /* Another trx has a request on the table in an incompatible + mode: this trx may have to wait */ + + err = lock_table_enqueue_waiting(mode | flags, table, thr); + + lock_mutex_exit_kernel(); + + return(err); + } + + lock_table_create(table, mode | flags, trx); + + ut_a(!flags || mode == LOCK_S || mode == LOCK_X); + + lock_mutex_exit_kernel(); + + return(DB_SUCCESS); +} + +/************************************************************************* +Checks if there are any locks set on the table. */ +UNIV_INTERN +ibool +lock_is_on_table( +/*=============*/ + /* out: TRUE if there are lock(s) */ + dict_table_t* table) /* in: database table in dictionary cache */ +{ + ibool ret; + + ut_ad(table); + + lock_mutex_enter_kernel(); + + if (UT_LIST_GET_LAST(table->locks)) { + ret = TRUE; + } else { + ret = FALSE; + } + + lock_mutex_exit_kernel(); + + return(ret); +} + +/************************************************************************* +Checks if a waiting table lock request still has to wait in a queue. */ +static +ibool +lock_table_has_to_wait_in_queue( +/*============================*/ + /* out: TRUE if still has to wait */ + lock_t* wait_lock) /* in: waiting table lock */ +{ + dict_table_t* table; + lock_t* lock; + + ut_ad(mutex_own(&kernel_mutex)); + ut_ad(lock_get_wait(wait_lock)); + + table = wait_lock->un_member.tab_lock.table; + + lock = UT_LIST_GET_FIRST(table->locks); + + while (lock != wait_lock) { + + if (lock_has_to_wait(wait_lock, lock)) { + + return(TRUE); + } + + lock = UT_LIST_GET_NEXT(un_member.tab_lock.locks, lock); + } + + return(FALSE); +} + +/***************************************************************** +Removes a table lock request, waiting or granted, from the queue and grants +locks to other transactions in the queue, if they now are entitled to a +lock. */ +static +void +lock_table_dequeue( +/*===============*/ + lock_t* in_lock)/* in: table lock object; transactions waiting + behind will get their lock requests granted, if + they are now qualified to it */ +{ + lock_t* lock; + + ut_ad(mutex_own(&kernel_mutex)); + ut_a(lock_get_type_low(in_lock) == LOCK_TABLE); + + lock = UT_LIST_GET_NEXT(un_member.tab_lock.locks, in_lock); + + lock_table_remove_low(in_lock); + + /* Check if waiting locks in the queue can now be granted: grant + locks if there are no conflicting locks ahead. */ + + while (lock != NULL) { + + if (lock_get_wait(lock) + && !lock_table_has_to_wait_in_queue(lock)) { + + /* Grant the lock */ + lock_grant(lock); + } + + lock = UT_LIST_GET_NEXT(un_member.tab_lock.locks, lock); + } +} + +/*=========================== LOCK RELEASE ==============================*/ + +/***************************************************************** +Removes a granted record lock of a transaction from the queue and grants +locks to other transactions waiting in the queue if they now are entitled +to a lock. */ +UNIV_INTERN +void +lock_rec_unlock( +/*============*/ + trx_t* trx, /* in: transaction that has + set a record lock */ + const buf_block_t* block, /* in: buffer block containing rec */ + const rec_t* rec, /* in: record */ + enum lock_mode lock_mode)/* in: LOCK_S or LOCK_X */ +{ + lock_t* lock; + lock_t* release_lock = NULL; + ulint heap_no; + + ut_ad(trx && rec); + ut_ad(block->frame == page_align(rec)); + + heap_no = page_rec_get_heap_no(rec); + + mutex_enter(&kernel_mutex); + + lock = lock_rec_get_first(block, heap_no); + + /* Find the last lock with the same lock_mode and transaction + from the record. */ + + while (lock != NULL) { + if (lock->trx == trx && lock_get_mode(lock) == lock_mode) { + release_lock = lock; + ut_a(!lock_get_wait(lock)); + } + + lock = lock_rec_get_next(heap_no, lock); + } + + /* If a record lock is found, release the record lock */ + + if (UNIV_LIKELY(release_lock != NULL)) { + lock_rec_reset_nth_bit(release_lock, heap_no); + } else { + mutex_exit(&kernel_mutex); + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: Error: unlock row could not" + " find a %lu mode lock on the record\n", + (ulong) lock_mode); + + return; + } + + /* Check if we can now grant waiting lock requests */ + + lock = lock_rec_get_first(block, heap_no); + + while (lock != NULL) { + if (lock_get_wait(lock) + && !lock_rec_has_to_wait_in_queue(lock)) { + + /* Grant the lock */ + lock_grant(lock); + } + + lock = lock_rec_get_next(heap_no, lock); + } + + mutex_exit(&kernel_mutex); +} + +/************************************************************************* +Releases a table lock. +Releases possible other transactions waiting for this lock. */ +UNIV_INTERN +void +lock_table_unlock( +/*==============*/ + lock_t* lock) /* in: lock */ +{ + mutex_enter(&kernel_mutex); + + lock_table_dequeue(lock); + + mutex_exit(&kernel_mutex); +} + +/************************************************************************* +Releases transaction locks, and releases possible other transactions waiting +because of these locks. */ +UNIV_INTERN +void +lock_release_off_kernel( +/*====================*/ + trx_t* trx) /* in: transaction */ +{ + dict_table_t* table; + ulint count; + lock_t* lock; + + ut_ad(mutex_own(&kernel_mutex)); + + lock = UT_LIST_GET_LAST(trx->trx_locks); + + count = 0; + + while (lock != NULL) { + + count++; + + if (lock_get_type_low(lock) == LOCK_REC) { + + lock_rec_dequeue_from_page(lock); + } else { + ut_ad(lock_get_type_low(lock) & LOCK_TABLE); + + if (lock_get_mode(lock) != LOCK_IS + && !ut_dulint_is_zero(trx->undo_no)) { + + /* The trx may have modified the table. We + block the use of the MySQL query cache for + all currently active transactions. */ + + table = lock->un_member.tab_lock.table; + + table->query_cache_inv_trx_id + = trx_sys->max_trx_id; + } + + lock_table_dequeue(lock); + } + + if (count == LOCK_RELEASE_KERNEL_INTERVAL) { + /* Release the kernel mutex for a while, so that we + do not monopolize it */ + + lock_mutex_exit_kernel(); + + lock_mutex_enter_kernel(); + + count = 0; + } + + lock = UT_LIST_GET_LAST(trx->trx_locks); + } + + ut_a(ib_vector_size(trx->autoinc_locks) == 0); + + mem_heap_empty(trx->lock_heap); +} + +/************************************************************************* +Cancels a waiting lock request and releases possible other transactions +waiting behind it. */ +UNIV_INTERN +void +lock_cancel_waiting_and_release( +/*============================*/ + lock_t* lock) /* in: waiting lock request */ +{ + ut_ad(mutex_own(&kernel_mutex)); + + if (lock_get_type_low(lock) == LOCK_REC) { + + lock_rec_dequeue_from_page(lock); + } else { + ut_ad(lock_get_type_low(lock) & LOCK_TABLE); + + if (lock->trx->autoinc_locks != NULL) { + /* Release the transaction's AUTOINC locks/ */ + lock_release_autoinc_locks(lock->trx); + } + + lock_table_dequeue(lock); + } + + /* Reset the wait flag and the back pointer to lock in trx */ + + lock_reset_lock_and_trx_wait(lock); + + /* The following function releases the trx from lock wait */ + + trx_end_lock_wait(lock->trx); +} + +/* True if a lock mode is S or X */ +#define IS_LOCK_S_OR_X(lock) \ + (lock_get_mode(lock) == LOCK_S \ + || lock_get_mode(lock) == LOCK_X) + + +/************************************************************************* +Removes locks of a transaction on a table to be dropped. +If remove_also_table_sx_locks is TRUE then table-level S and X locks are +also removed in addition to other table-level and record-level locks. +No lock, that is going to be removed, is allowed to be a wait lock. */ +static +void +lock_remove_all_on_table_for_trx( +/*=============================*/ + dict_table_t* table, /* in: table to be dropped */ + trx_t* trx, /* in: a transaction */ + ibool remove_also_table_sx_locks)/* in: also removes + table S and X locks */ +{ + lock_t* lock; + lock_t* prev_lock; + + ut_ad(mutex_own(&kernel_mutex)); + + lock = UT_LIST_GET_LAST(trx->trx_locks); + + while (lock != NULL) { + prev_lock = UT_LIST_GET_PREV(trx_locks, lock); + + if (lock_get_type_low(lock) == LOCK_REC + && lock->index->table == table) { + ut_a(!lock_get_wait(lock)); + + lock_rec_discard(lock); + } else if (lock_get_type_low(lock) & LOCK_TABLE + && lock->un_member.tab_lock.table == table + && (remove_also_table_sx_locks + || !IS_LOCK_S_OR_X(lock))) { + + ut_a(!lock_get_wait(lock)); + + lock_table_remove_low(lock); + } + + lock = prev_lock; + } +} + +/************************************************************************* +Removes locks on a table to be dropped or truncated. +If remove_also_table_sx_locks is TRUE then table-level S and X locks are +also removed in addition to other table-level and record-level locks. +No lock, that is going to be removed, is allowed to be a wait lock. */ +UNIV_INTERN +void +lock_remove_all_on_table( +/*=====================*/ + dict_table_t* table, /* in: table to be dropped + or truncated */ + ibool remove_also_table_sx_locks)/* in: also removes + table S and X locks */ +{ + lock_t* lock; + lock_t* prev_lock; + + mutex_enter(&kernel_mutex); + + lock = UT_LIST_GET_FIRST(table->locks); + + while (lock != NULL) { + + prev_lock = UT_LIST_GET_PREV(un_member.tab_lock.locks, + lock); + + /* If we should remove all locks (remove_also_table_sx_locks + is TRUE), or if the lock is not table-level S or X lock, + then check we are not going to remove a wait lock. */ + if (remove_also_table_sx_locks + || !(lock_get_type(lock) == LOCK_TABLE + && IS_LOCK_S_OR_X(lock))) { + + ut_a(!lock_get_wait(lock)); + } + + lock_remove_all_on_table_for_trx(table, lock->trx, + remove_also_table_sx_locks); + + if (prev_lock == NULL) { + if (lock == UT_LIST_GET_FIRST(table->locks)) { + /* lock was not removed, pick its successor */ + lock = UT_LIST_GET_NEXT( + un_member.tab_lock.locks, lock); + } else { + /* lock was removed, pick the first one */ + lock = UT_LIST_GET_FIRST(table->locks); + } + } else if (UT_LIST_GET_NEXT(un_member.tab_lock.locks, + prev_lock) != lock) { + /* If lock was removed by + lock_remove_all_on_table_for_trx() then pick the + successor of prev_lock ... */ + lock = UT_LIST_GET_NEXT( + un_member.tab_lock.locks, prev_lock); + } else { + /* ... otherwise pick the successor of lock. */ + lock = UT_LIST_GET_NEXT( + un_member.tab_lock.locks, lock); + } + } + + mutex_exit(&kernel_mutex); +} + +/*===================== VALIDATION AND DEBUGGING ====================*/ + +/************************************************************************* +Prints info of a table lock. */ +UNIV_INTERN +void +lock_table_print( +/*=============*/ + FILE* file, /* in: file where to print */ + const lock_t* lock) /* in: table type lock */ +{ + ut_ad(mutex_own(&kernel_mutex)); + ut_a(lock_get_type_low(lock) == LOCK_TABLE); + + fputs("TABLE LOCK table ", file); + ut_print_name(file, lock->trx, TRUE, + lock->un_member.tab_lock.table->name); + fprintf(file, " trx id " TRX_ID_FMT, + TRX_ID_PREP_PRINTF(lock->trx->id)); + + if (lock_get_mode(lock) == LOCK_S) { + fputs(" lock mode S", file); + } else if (lock_get_mode(lock) == LOCK_X) { + fputs(" lock mode X", file); + } else if (lock_get_mode(lock) == LOCK_IS) { + fputs(" lock mode IS", file); + } else if (lock_get_mode(lock) == LOCK_IX) { + fputs(" lock mode IX", file); + } else if (lock_get_mode(lock) == LOCK_AUTO_INC) { + fputs(" lock mode AUTO-INC", file); + } else { + fprintf(file, " unknown lock mode %lu", + (ulong) lock_get_mode(lock)); + } + + if (lock_get_wait(lock)) { + fputs(" waiting", file); + } + + putc('\n', file); +} + +/************************************************************************* +Prints info of a record lock. */ +UNIV_INTERN +void +lock_rec_print( +/*===========*/ + FILE* file, /* in: file where to print */ + const lock_t* lock) /* in: record type lock */ +{ + const buf_block_t* block; + ulint space; + ulint page_no; + ulint i; + mtr_t mtr; + mem_heap_t* heap = NULL; + ulint offsets_[REC_OFFS_NORMAL_SIZE]; + ulint* offsets = offsets_; + rec_offs_init(offsets_); + + ut_ad(mutex_own(&kernel_mutex)); + ut_a(lock_get_type_low(lock) == LOCK_REC); + + space = lock->un_member.rec_lock.space; + page_no = lock->un_member.rec_lock.page_no; + + fprintf(file, "RECORD LOCKS space id %lu page no %lu n bits %lu ", + (ulong) space, (ulong) page_no, + (ulong) lock_rec_get_n_bits(lock)); + dict_index_name_print(file, lock->trx, lock->index); + fprintf(file, " trx id " TRX_ID_FMT, + TRX_ID_PREP_PRINTF(lock->trx->id)); + + if (lock_get_mode(lock) == LOCK_S) { + fputs(" lock mode S", file); + } else if (lock_get_mode(lock) == LOCK_X) { + fputs(" lock_mode X", file); + } else { + ut_error; + } + + if (lock_rec_get_gap(lock)) { + fputs(" locks gap before rec", file); + } + + if (lock_rec_get_rec_not_gap(lock)) { + fputs(" locks rec but not gap", file); + } + + if (lock_rec_get_insert_intention(lock)) { + fputs(" insert intention", file); + } + + if (lock_get_wait(lock)) { + fputs(" waiting", file); + } + + mtr_start(&mtr); + + putc('\n', file); + + if ( srv_show_verbose_locks ) { + block = buf_page_try_get(space, page_no, &mtr); + if (block) { + for (i = 0; i < lock_rec_get_n_bits(lock); i++) { + + if (lock_rec_get_nth_bit(lock, i)) { + + const rec_t* rec + = page_find_rec_with_heap_no( + buf_block_get_frame(block), i); + offsets = rec_get_offsets( + rec, lock->index, offsets, + ULINT_UNDEFINED, &heap); + + fprintf(file, "Record lock, heap no %lu ", + (ulong) i); + rec_print_new(file, rec, offsets); + putc('\n', file); + } + } + } else { + for (i = 0; i < lock_rec_get_n_bits(lock); i++) { + fprintf(file, "Record lock, heap no %lu\n", (ulong) i); + } + } + } + mtr_commit(&mtr); + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } +} + +#ifndef UNIV_HOTBACKUP + +#ifdef UNIV_DEBUG +/* Print the number of lock structs from lock_print_info_summary() only +in non-production builds for performance reasons, see +http://bugs.mysql.com/36942 */ +#define PRINT_NUM_OF_LOCK_STRUCTS +#endif /* UNIV_DEBUG */ + +#ifdef PRINT_NUM_OF_LOCK_STRUCTS +/************************************************************************* +Calculates the number of record lock structs in the record lock hash table. */ +static +ulint +lock_get_n_rec_locks(void) +/*======================*/ +{ + lock_t* lock; + ulint n_locks = 0; + ulint i; + + ut_ad(mutex_own(&kernel_mutex)); + + for (i = 0; i < hash_get_n_cells(lock_sys->rec_hash); i++) { + + lock = HASH_GET_FIRST(lock_sys->rec_hash, i); + + while (lock) { + n_locks++; + + lock = HASH_GET_NEXT(hash, lock); + } + } + + return(n_locks); +} +#endif /* PRINT_NUM_OF_LOCK_STRUCTS */ + +/************************************************************************* +Prints info of locks for all transactions. */ +UNIV_INTERN +void +lock_print_info_summary( +/*====================*/ + FILE* file) /* in: file where to print */ +{ + /* We must protect the MySQL thd->query field with a MySQL mutex, and + because the MySQL mutex must be reserved before the kernel_mutex of + InnoDB, we call innobase_mysql_prepare_print_arbitrary_thd() here. */ + + innobase_mysql_prepare_print_arbitrary_thd(); + lock_mutex_enter_kernel(); + + if (lock_deadlock_found) { + fputs("------------------------\n" + "LATEST DETECTED DEADLOCK\n" + "------------------------\n", file); + + ut_copy_file(file, lock_latest_err_file); + } + + fputs("------------\n" + "TRANSACTIONS\n" + "------------\n", file); + + fprintf(file, "Trx id counter " TRX_ID_FMT "\n", + TRX_ID_PREP_PRINTF(trx_sys->max_trx_id)); + + fprintf(file, + "Purge done for trx's n:o < " TRX_ID_FMT + " undo n:o < " TRX_ID_FMT "\n", + TRX_ID_PREP_PRINTF(purge_sys->purge_trx_no), + TRX_ID_PREP_PRINTF(purge_sys->purge_undo_no)); + + fprintf(file, + "History list length %lu\n", + (ulong) trx_sys->rseg_history_len); + +#ifdef PRINT_NUM_OF_LOCK_STRUCTS + fprintf(file, + "Total number of lock structs in row lock hash table %lu\n", + (ulong) lock_get_n_rec_locks()); +#endif /* PRINT_NUM_OF_LOCK_STRUCTS */ +} + +/************************************************************************* +Prints info of locks for each transaction. */ +UNIV_INTERN +void +lock_print_info_all_transactions( +/*=============================*/ + FILE* file) /* in: file where to print */ +{ + lock_t* lock; + ibool load_page_first = TRUE; + ulint nth_trx = 0; + ulint nth_lock = 0; + ulint i; + mtr_t mtr; + trx_t* trx; + + fprintf(file, "LIST OF TRANSACTIONS FOR EACH SESSION:\n"); + + /* First print info on non-active transactions */ + + trx = UT_LIST_GET_FIRST(trx_sys->mysql_trx_list); + + while (trx) { + if (trx->conc_state == TRX_NOT_STARTED) { + fputs("---", file); + trx_print(file, trx, 600); + } + + trx = UT_LIST_GET_NEXT(mysql_trx_list, trx); + } + +loop: + trx = UT_LIST_GET_FIRST(trx_sys->trx_list); + + i = 0; + + /* Since we temporarily release the kernel mutex when + reading a database page in below, variable trx may be + obsolete now and we must loop through the trx list to + get probably the same trx, or some other trx. */ + + while (trx && (i < nth_trx)) { + trx = UT_LIST_GET_NEXT(trx_list, trx); + i++; + } + + if (trx == NULL) { + lock_mutex_exit_kernel(); + innobase_mysql_end_print_arbitrary_thd(); + + ut_ad(lock_validate()); + + return; + } + + if (nth_lock == 0) { + fputs("---", file); + trx_print(file, trx, 600); + + if (trx->read_view) { + fprintf(file, + "Trx read view will not see trx with" + " id >= " TRX_ID_FMT + ", sees < " TRX_ID_FMT "\n", + TRX_ID_PREP_PRINTF( + trx->read_view->low_limit_id), + TRX_ID_PREP_PRINTF( + trx->read_view->up_limit_id)); + } + + if (trx->que_state == TRX_QUE_LOCK_WAIT) { + fprintf(file, + "------- TRX HAS BEEN WAITING %lu SEC" + " FOR THIS LOCK TO BE GRANTED:\n", + (ulong) difftime(time(NULL), + trx->wait_started)); + + if (lock_get_type_low(trx->wait_lock) == LOCK_REC) { + lock_rec_print(file, trx->wait_lock); + } else { + lock_table_print(file, trx->wait_lock); + } + + fputs("------------------\n", file); + } + } + + if (!srv_print_innodb_lock_monitor && !srv_show_locks_held) { + nth_trx++; + goto loop; + } + + i = 0; + + /* Look at the note about the trx loop above why we loop here: + lock may be an obsolete pointer now. */ + + lock = UT_LIST_GET_FIRST(trx->trx_locks); + + while (lock && (i < nth_lock)) { + lock = UT_LIST_GET_NEXT(trx_locks, lock); + i++; + } + + if (lock == NULL) { + nth_trx++; + nth_lock = 0; + + goto loop; + } + + if (lock_get_type_low(lock) == LOCK_REC) { + if (load_page_first) { + ulint space = lock->un_member.rec_lock.space; + ulint zip_size= fil_space_get_zip_size(space); + ulint page_no = lock->un_member.rec_lock.page_no; + + lock_mutex_exit_kernel(); + innobase_mysql_end_print_arbitrary_thd(); + + mtr_start(&mtr); + + buf_page_get_with_no_latch(space, zip_size, + page_no, &mtr); + + mtr_commit(&mtr); + + load_page_first = FALSE; + + innobase_mysql_prepare_print_arbitrary_thd(); + lock_mutex_enter_kernel(); + + goto loop; + } + + lock_rec_print(file, lock); + } else { + ut_ad(lock_get_type_low(lock) & LOCK_TABLE); + + lock_table_print(file, lock); + } + + load_page_first = TRUE; + + nth_lock++; + + if (nth_lock >= srv_show_locks_held) { + fputs("TOO LOCKS PRINTED FOR THIS TRX:" + " SUPPRESSING FURTHER PRINTS\n", + file); + + nth_trx++; + nth_lock = 0; + + goto loop; + } + + goto loop; +} + +# ifdef UNIV_DEBUG +/************************************************************************* +Validates the lock queue on a table. */ +static +ibool +lock_table_queue_validate( +/*======================*/ + /* out: TRUE if ok */ + dict_table_t* table) /* in: table */ +{ + lock_t* lock; + + ut_ad(mutex_own(&kernel_mutex)); + + lock = UT_LIST_GET_FIRST(table->locks); + + while (lock) { + ut_a(((lock->trx)->conc_state == TRX_ACTIVE) + || ((lock->trx)->conc_state == TRX_PREPARED) + || ((lock->trx)->conc_state == TRX_COMMITTED_IN_MEMORY)); + + if (!lock_get_wait(lock)) { + + ut_a(!lock_table_other_has_incompatible( + lock->trx, 0, table, + lock_get_mode(lock))); + } else { + + ut_a(lock_table_has_to_wait_in_queue(lock)); + } + + lock = UT_LIST_GET_NEXT(un_member.tab_lock.locks, lock); + } + + return(TRUE); +} + +/************************************************************************* +Validates the lock queue on a single record. */ +static +ibool +lock_rec_queue_validate( +/*====================*/ + /* out: TRUE if ok */ + const buf_block_t* block, /* in: buffer block containing rec */ + const rec_t* rec, /* in: record to look at */ + dict_index_t* index, /* in: index, or NULL if not known */ + const ulint* offsets)/* in: rec_get_offsets(rec, index) */ +{ + trx_t* impl_trx; + lock_t* lock; + ulint heap_no; + + ut_a(rec); + ut_a(block->frame == page_align(rec)); + ut_ad(rec_offs_validate(rec, index, offsets)); + ut_ad(!page_rec_is_comp(rec) == !rec_offs_comp(offsets)); + + heap_no = page_rec_get_heap_no(rec); + + lock_mutex_enter_kernel(); + + if (!page_rec_is_user_rec(rec)) { + + lock = lock_rec_get_first(block, heap_no); + + while (lock) { + switch(lock->trx->conc_state) { + case TRX_ACTIVE: + case TRX_PREPARED: + case TRX_COMMITTED_IN_MEMORY: + break; + default: + ut_error; + } + + ut_a(trx_in_trx_list(lock->trx)); + + if (lock_get_wait(lock)) { + ut_a(lock_rec_has_to_wait_in_queue(lock)); + } + + if (index) { + ut_a(lock->index == index); + } + + lock = lock_rec_get_next(heap_no, lock); + } + + lock_mutex_exit_kernel(); + + return(TRUE); + } + + if (!index); + else if (dict_index_is_clust(index)) { + + impl_trx = lock_clust_rec_some_has_impl(rec, index, offsets); + + if (impl_trx + && lock_rec_other_has_expl_req(LOCK_S, 0, LOCK_WAIT, + block, heap_no, impl_trx)) { + + ut_a(lock_rec_has_expl(LOCK_X | LOCK_REC_NOT_GAP, + block, heap_no, impl_trx)); + } + } else { + + /* The kernel mutex may get released temporarily in the + next function call: we have to release lock table mutex + to obey the latching order */ + + impl_trx = lock_sec_rec_some_has_impl_off_kernel( + rec, index, offsets); + + if (impl_trx + && lock_rec_other_has_expl_req(LOCK_S, 0, LOCK_WAIT, + block, heap_no, impl_trx)) { + + ut_a(lock_rec_has_expl(LOCK_X | LOCK_REC_NOT_GAP, + block, heap_no, impl_trx)); + } + } + + lock = lock_rec_get_first(block, heap_no); + + while (lock) { + ut_a(lock->trx->conc_state == TRX_ACTIVE + || lock->trx->conc_state == TRX_PREPARED + || lock->trx->conc_state == TRX_COMMITTED_IN_MEMORY); + ut_a(trx_in_trx_list(lock->trx)); + + if (index) { + ut_a(lock->index == index); + } + + if (!lock_rec_get_gap(lock) && !lock_get_wait(lock)) { + + enum lock_mode mode; + + if (lock_get_mode(lock) == LOCK_S) { + mode = LOCK_X; + } else { + mode = LOCK_S; + } + ut_a(!lock_rec_other_has_expl_req( + mode, 0, 0, block, heap_no, lock->trx)); + + } else if (lock_get_wait(lock) && !lock_rec_get_gap(lock)) { + + ut_a(lock_rec_has_to_wait_in_queue(lock)); + } + + lock = lock_rec_get_next(heap_no, lock); + } + + lock_mutex_exit_kernel(); + + return(TRUE); +} + +/************************************************************************* +Validates the record lock queues on a page. */ +static +ibool +lock_rec_validate_page( +/*===================*/ + /* out: TRUE if ok */ + ulint space, /* in: space id */ + ulint page_no)/* in: page number */ +{ + dict_index_t* index; + buf_block_t* block; + const page_t* page; + lock_t* lock; + const rec_t* rec; + ulint nth_lock = 0; + ulint nth_bit = 0; + ulint i; + mtr_t mtr; + mem_heap_t* heap = NULL; + ulint offsets_[REC_OFFS_NORMAL_SIZE]; + ulint* offsets = offsets_; + rec_offs_init(offsets_); + + ut_ad(!mutex_own(&kernel_mutex)); + + mtr_start(&mtr); + + block = buf_page_get(space, fil_space_get_zip_size(space), + page_no, RW_X_LATCH, &mtr); + buf_block_dbg_add_level(block, SYNC_NO_ORDER_CHECK); + + page = block->frame; + + lock_mutex_enter_kernel(); +loop: + lock = lock_rec_get_first_on_page_addr(space, page_no); + + if (!lock) { + goto function_exit; + } + + for (i = 0; i < nth_lock; i++) { + + lock = lock_rec_get_next_on_page(lock); + + if (!lock) { + goto function_exit; + } + } + + ut_a(trx_in_trx_list(lock->trx)); + ut_a(lock->trx->conc_state == TRX_ACTIVE + || lock->trx->conc_state == TRX_PREPARED + || lock->trx->conc_state == TRX_COMMITTED_IN_MEMORY); + + for (i = nth_bit; i < lock_rec_get_n_bits(lock); i++) { + + if (i == 1 || lock_rec_get_nth_bit(lock, i)) { + + index = lock->index; + rec = page_find_rec_with_heap_no(page, i); + ut_a(rec); + offsets = rec_get_offsets(rec, index, offsets, + ULINT_UNDEFINED, &heap); + + fprintf(stderr, + "Validating %lu %lu\n", + (ulong) space, (ulong) page_no); + + lock_mutex_exit_kernel(); + + lock_rec_queue_validate(block, rec, index, offsets); + + lock_mutex_enter_kernel(); + + nth_bit = i + 1; + + goto loop; + } + } + + nth_bit = 0; + nth_lock++; + + goto loop; + +function_exit: + lock_mutex_exit_kernel(); + + mtr_commit(&mtr); + + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } + return(TRUE); +} + +/************************************************************************* +Validates the lock system. */ +static +ibool +lock_validate(void) +/*===============*/ + /* out: TRUE if ok */ +{ + lock_t* lock; + trx_t* trx; + dulint limit; + ulint space; + ulint page_no; + ulint i; + + lock_mutex_enter_kernel(); + + trx = UT_LIST_GET_FIRST(trx_sys->trx_list); + + while (trx) { + lock = UT_LIST_GET_FIRST(trx->trx_locks); + + while (lock) { + if (lock_get_type_low(lock) & LOCK_TABLE) { + + lock_table_queue_validate( + lock->un_member.tab_lock.table); + } + + lock = UT_LIST_GET_NEXT(trx_locks, lock); + } + + trx = UT_LIST_GET_NEXT(trx_list, trx); + } + + for (i = 0; i < hash_get_n_cells(lock_sys->rec_hash); i++) { + + limit = ut_dulint_zero; + + for (;;) { + lock = HASH_GET_FIRST(lock_sys->rec_hash, i); + + while (lock) { + ut_a(trx_in_trx_list(lock->trx)); + + space = lock->un_member.rec_lock.space; + page_no = lock->un_member.rec_lock.page_no; + + if (ut_dulint_cmp( + ut_dulint_create(space, page_no), + limit) >= 0) { + break; + } + + lock = HASH_GET_NEXT(hash, lock); + } + + if (!lock) { + + break; + } + + lock_mutex_exit_kernel(); + + lock_rec_validate_page(space, page_no); + + lock_mutex_enter_kernel(); + + limit = ut_dulint_create(space, page_no + 1); + } + } + + lock_mutex_exit_kernel(); + + return(TRUE); +} +# endif /* UNIV_DEBUG */ +#endif /* !UNIV_HOTBACKUP */ +/*============ RECORD LOCK CHECKS FOR ROW OPERATIONS ====================*/ + +/************************************************************************* +Checks if locks of other transactions prevent an immediate insert of +a record. If they do, first tests if the query thread should anyway +be suspended for some reason; if not, then puts the transaction and +the query thread to the lock wait state and inserts a waiting request +for a gap x-lock to the lock queue. */ +UNIV_INTERN +ulint +lock_rec_insert_check_and_lock( +/*===========================*/ + /* out: DB_SUCCESS, DB_LOCK_WAIT, + DB_DEADLOCK, or DB_QUE_THR_SUSPENDED */ + ulint flags, /* in: if BTR_NO_LOCKING_FLAG bit is + set, does nothing */ + rec_t* rec, /* in: record after which to insert */ + buf_block_t* block, /* in/out: buffer block of rec */ + dict_index_t* index, /* in: index */ + que_thr_t* thr, /* in: query thread */ + ibool* inherit)/* out: set to TRUE if the new + inserted record maybe should inherit + LOCK_GAP type locks from the successor + record */ +{ + const rec_t* next_rec; + trx_t* trx; + lock_t* lock; + ulint err; + ulint next_rec_heap_no; + + ut_ad(block->frame == page_align(rec)); + + if (flags & BTR_NO_LOCKING_FLAG) { + + return(DB_SUCCESS); + } + + trx = thr_get_trx(thr); + next_rec = page_rec_get_next(rec); + next_rec_heap_no = page_rec_get_heap_no(next_rec); + + lock_mutex_enter_kernel(); + + /* When inserting a record into an index, the table must be at + least IX-locked or we must be building an index, in which case + the table must be at least S-locked. */ + ut_ad(lock_table_has(trx, index->table, LOCK_IX) + || (*index->name == TEMP_INDEX_PREFIX + && lock_table_has(trx, index->table, LOCK_S))); + + lock = lock_rec_get_first(block, next_rec_heap_no); + + if (UNIV_LIKELY(lock == NULL)) { + /* We optimize CPU time usage in the simplest case */ + + lock_mutex_exit_kernel(); + + if (!dict_index_is_clust(index)) { + /* Update the page max trx id field */ + page_update_max_trx_id(block, + buf_block_get_page_zip(block), + trx->id); + } + + *inherit = FALSE; + + return(DB_SUCCESS); + } + + *inherit = TRUE; + + /* If another transaction has an explicit lock request which locks + the gap, waiting or granted, on the successor, the insert has to wait. + + An exception is the case where the lock by the another transaction + is a gap type lock which it placed to wait for its turn to insert. We + do not consider that kind of a lock conflicting with our insert. This + eliminates an unnecessary deadlock which resulted when 2 transactions + had to wait for their insert. Both had waiting gap type lock requests + on the successor, which produced an unnecessary deadlock. */ + + if (lock_rec_other_has_conflicting( + LOCK_X | LOCK_GAP | LOCK_INSERT_INTENTION, + block, next_rec_heap_no, trx)) { + + /* Note that we may get DB_SUCCESS also here! */ + err = lock_rec_enqueue_waiting(LOCK_X | LOCK_GAP + | LOCK_INSERT_INTENTION, + block, next_rec_heap_no, + index, thr); + } else { + err = DB_SUCCESS; + } + + lock_mutex_exit_kernel(); + + if ((err == DB_SUCCESS) && !dict_index_is_clust(index)) { + /* Update the page max trx id field */ + page_update_max_trx_id(block, + buf_block_get_page_zip(block), + trx->id); + } + +#ifdef UNIV_DEBUG + { + mem_heap_t* heap = NULL; + ulint offsets_[REC_OFFS_NORMAL_SIZE]; + const ulint* offsets; + rec_offs_init(offsets_); + + offsets = rec_get_offsets(next_rec, index, offsets_, + ULINT_UNDEFINED, &heap); + ut_ad(lock_rec_queue_validate(block, + next_rec, index, offsets)); + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } + } +#endif /* UNIV_DEBUG */ + + return(err); +} + +/************************************************************************* +If a transaction has an implicit x-lock on a record, but no explicit x-lock +set on the record, sets one for it. NOTE that in the case of a secondary +index, the kernel mutex may get temporarily released. */ +static +void +lock_rec_convert_impl_to_expl( +/*==========================*/ + const buf_block_t* block, /* in: buffer block of rec */ + const rec_t* rec, /* in: user record on page */ + dict_index_t* index, /* in: index of record */ + const ulint* offsets)/* in: rec_get_offsets(rec, index) */ +{ + trx_t* impl_trx; + + ut_ad(mutex_own(&kernel_mutex)); + ut_ad(page_rec_is_user_rec(rec)); + ut_ad(rec_offs_validate(rec, index, offsets)); + ut_ad(!page_rec_is_comp(rec) == !rec_offs_comp(offsets)); + + if (dict_index_is_clust(index)) { + impl_trx = lock_clust_rec_some_has_impl(rec, index, offsets); + } else { + impl_trx = lock_sec_rec_some_has_impl_off_kernel( + rec, index, offsets); + } + + if (impl_trx) { + ulint heap_no = page_rec_get_heap_no(rec); + + /* If the transaction has no explicit x-lock set on the + record, set one for it */ + + if (!lock_rec_has_expl(LOCK_X | LOCK_REC_NOT_GAP, block, + heap_no, impl_trx)) { + + lock_rec_add_to_queue( + LOCK_REC | LOCK_X | LOCK_REC_NOT_GAP, + block, heap_no, index, impl_trx); + } + } +} + +/************************************************************************* +Checks if locks of other transactions prevent an immediate modify (update, +delete mark, or delete unmark) of a clustered index record. If they do, +first tests if the query thread should anyway be suspended for some +reason; if not, then puts the transaction and the query thread to the +lock wait state and inserts a waiting request for a record x-lock to the +lock queue. */ +UNIV_INTERN +ulint +lock_clust_rec_modify_check_and_lock( +/*=================================*/ + /* out: DB_SUCCESS, + DB_LOCK_WAIT, DB_DEADLOCK, or + DB_QUE_THR_SUSPENDED */ + ulint flags, /* in: if BTR_NO_LOCKING_FLAG + bit is set, does nothing */ + const buf_block_t* block, /* in: buffer block of rec */ + const rec_t* rec, /* in: record which should be + modified */ + dict_index_t* index, /* in: clustered index */ + const ulint* offsets,/* in: rec_get_offsets(rec, index) */ + que_thr_t* thr) /* in: query thread */ +{ + ulint err; + ulint heap_no; + + ut_ad(rec_offs_validate(rec, index, offsets)); + ut_ad(dict_index_is_clust(index)); + ut_ad(block->frame == page_align(rec)); + + if (flags & BTR_NO_LOCKING_FLAG) { + + return(DB_SUCCESS); + } + + heap_no = rec_offs_comp(offsets) + ? rec_get_heap_no_new(rec) + : rec_get_heap_no_old(rec); + + lock_mutex_enter_kernel(); + + ut_ad(lock_table_has(thr_get_trx(thr), index->table, LOCK_IX)); + + /* If a transaction has no explicit x-lock set on the record, set one + for it */ + + lock_rec_convert_impl_to_expl(block, rec, index, offsets); + + err = lock_rec_lock(TRUE, LOCK_X | LOCK_REC_NOT_GAP, + block, heap_no, index, thr); + + lock_mutex_exit_kernel(); + + ut_ad(lock_rec_queue_validate(block, rec, index, offsets)); + + return(err); +} + +/************************************************************************* +Checks if locks of other transactions prevent an immediate modify (delete +mark or delete unmark) of a secondary index record. */ +UNIV_INTERN +ulint +lock_sec_rec_modify_check_and_lock( +/*===============================*/ + /* out: DB_SUCCESS, DB_LOCK_WAIT, + DB_DEADLOCK, or DB_QUE_THR_SUSPENDED */ + ulint flags, /* in: if BTR_NO_LOCKING_FLAG + bit is set, does nothing */ + buf_block_t* block, /* in/out: buffer block of rec */ + rec_t* rec, /* in: record which should be + modified; NOTE: as this is a secondary + index, we always have to modify the + clustered index record first: see the + comment below */ + dict_index_t* index, /* in: secondary index */ + que_thr_t* thr) /* in: query thread */ +{ + ulint err; + ulint heap_no; + + ut_ad(!dict_index_is_clust(index)); + ut_ad(block->frame == page_align(rec)); + + if (flags & BTR_NO_LOCKING_FLAG) { + + return(DB_SUCCESS); + } + + heap_no = page_rec_get_heap_no(rec); + + /* Another transaction cannot have an implicit lock on the record, + because when we come here, we already have modified the clustered + index record, and this would not have been possible if another active + transaction had modified this secondary index record. */ + + lock_mutex_enter_kernel(); + + ut_ad(lock_table_has(thr_get_trx(thr), index->table, LOCK_IX)); + + err = lock_rec_lock(TRUE, LOCK_X | LOCK_REC_NOT_GAP, + block, heap_no, index, thr); + + lock_mutex_exit_kernel(); + +#ifdef UNIV_DEBUG + { + mem_heap_t* heap = NULL; + ulint offsets_[REC_OFFS_NORMAL_SIZE]; + const ulint* offsets; + rec_offs_init(offsets_); + + offsets = rec_get_offsets(rec, index, offsets_, + ULINT_UNDEFINED, &heap); + ut_ad(lock_rec_queue_validate(block, rec, index, offsets)); + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } + } +#endif /* UNIV_DEBUG */ + + if (err == DB_SUCCESS) { + /* Update the page max trx id field */ + page_update_max_trx_id(block, + buf_block_get_page_zip(block), + thr_get_trx(thr)->id); + } + + return(err); +} + +/************************************************************************* +Like the counterpart for a clustered index below, but now we read a +secondary index record. */ +UNIV_INTERN +ulint +lock_sec_rec_read_check_and_lock( +/*=============================*/ + /* out: DB_SUCCESS, + DB_LOCK_WAIT, DB_DEADLOCK, or + DB_QUE_THR_SUSPENDED */ + ulint flags, /* in: if BTR_NO_LOCKING_FLAG + bit is set, does nothing */ + const buf_block_t* block, /* in: buffer block of rec */ + const rec_t* rec, /* in: user record or page + supremum record which should + be read or passed over by a + read cursor */ + dict_index_t* index, /* in: secondary index */ + const ulint* offsets,/* in: rec_get_offsets(rec, index) */ + enum lock_mode mode, /* in: mode of the lock which + the read cursor should set on + records: LOCK_S or LOCK_X; the + latter is possible in + SELECT FOR UPDATE */ + ulint gap_mode,/* in: LOCK_ORDINARY, LOCK_GAP, or + LOCK_REC_NOT_GAP */ + que_thr_t* thr) /* in: query thread */ +{ + ulint err; + ulint heap_no; + + ut_ad(!dict_index_is_clust(index)); + ut_ad(block->frame == page_align(rec)); + ut_ad(page_rec_is_user_rec(rec) || page_rec_is_supremum(rec)); + ut_ad(rec_offs_validate(rec, index, offsets)); + ut_ad(mode == LOCK_X || mode == LOCK_S); + + if (flags & BTR_NO_LOCKING_FLAG) { + + return(DB_SUCCESS); + } + + heap_no = page_rec_get_heap_no(rec); + + lock_mutex_enter_kernel(); + + ut_ad(mode != LOCK_X + || lock_table_has(thr_get_trx(thr), index->table, LOCK_IX)); + ut_ad(mode != LOCK_S + || lock_table_has(thr_get_trx(thr), index->table, LOCK_IS)); + + /* Some transaction may have an implicit x-lock on the record only + if the max trx id for the page >= min trx id for the trx list or a + database recovery is running. */ + + if (((ut_dulint_cmp(page_get_max_trx_id(block->frame), + trx_list_get_min_trx_id()) >= 0) + || recv_recovery_is_on()) + && !page_rec_is_supremum(rec)) { + + lock_rec_convert_impl_to_expl(block, rec, index, offsets); + } + + err = lock_rec_lock(FALSE, mode | gap_mode, + block, heap_no, index, thr); + + lock_mutex_exit_kernel(); + + ut_ad(lock_rec_queue_validate(block, rec, index, offsets)); + + return(err); +} + +/************************************************************************* +Checks if locks of other transactions prevent an immediate read, or passing +over by a read cursor, of a clustered index record. If they do, first tests +if the query thread should anyway be suspended for some reason; if not, then +puts the transaction and the query thread to the lock wait state and inserts a +waiting request for a record lock to the lock queue. Sets the requested mode +lock on the record. */ +UNIV_INTERN +ulint +lock_clust_rec_read_check_and_lock( +/*===============================*/ + /* out: DB_SUCCESS, + DB_LOCK_WAIT, DB_DEADLOCK, or + DB_QUE_THR_SUSPENDED */ + ulint flags, /* in: if BTR_NO_LOCKING_FLAG + bit is set, does nothing */ + const buf_block_t* block, /* in: buffer block of rec */ + const rec_t* rec, /* in: user record or page + supremum record which should + be read or passed over by a + read cursor */ + dict_index_t* index, /* in: clustered index */ + const ulint* offsets,/* in: rec_get_offsets(rec, index) */ + enum lock_mode mode, /* in: mode of the lock which + the read cursor should set on + records: LOCK_S or LOCK_X; the + latter is possible in + SELECT FOR UPDATE */ + ulint gap_mode,/* in: LOCK_ORDINARY, LOCK_GAP, or + LOCK_REC_NOT_GAP */ + que_thr_t* thr) /* in: query thread */ +{ + ulint err; + ulint heap_no; + + ut_ad(dict_index_is_clust(index)); + ut_ad(block->frame == page_align(rec)); + ut_ad(page_rec_is_user_rec(rec) || page_rec_is_supremum(rec)); + ut_ad(gap_mode == LOCK_ORDINARY || gap_mode == LOCK_GAP + || gap_mode == LOCK_REC_NOT_GAP); + ut_ad(rec_offs_validate(rec, index, offsets)); + + if (flags & BTR_NO_LOCKING_FLAG) { + + return(DB_SUCCESS); + } + + heap_no = page_rec_get_heap_no(rec); + + lock_mutex_enter_kernel(); + + ut_ad(mode != LOCK_X + || lock_table_has(thr_get_trx(thr), index->table, LOCK_IX)); + ut_ad(mode != LOCK_S + || lock_table_has(thr_get_trx(thr), index->table, LOCK_IS)); + + if (UNIV_LIKELY(heap_no != PAGE_HEAP_NO_SUPREMUM)) { + + lock_rec_convert_impl_to_expl(block, rec, index, offsets); + } + + err = lock_rec_lock(FALSE, mode | gap_mode, + block, heap_no, index, thr); + + lock_mutex_exit_kernel(); + + ut_ad(lock_rec_queue_validate(block, rec, index, offsets)); + + return(err); +} +/************************************************************************* +Checks if locks of other transactions prevent an immediate read, or passing +over by a read cursor, of a clustered index record. If they do, first tests +if the query thread should anyway be suspended for some reason; if not, then +puts the transaction and the query thread to the lock wait state and inserts a +waiting request for a record lock to the lock queue. Sets the requested mode +lock on the record. This is an alternative version of +lock_clust_rec_read_check_and_lock() that does not require the parameter +"offsets". */ +UNIV_INTERN +ulint +lock_clust_rec_read_check_and_lock_alt( +/*===================================*/ + /* out: DB_SUCCESS, + DB_LOCK_WAIT, DB_DEADLOCK, or + DB_QUE_THR_SUSPENDED */ + ulint flags, /* in: if BTR_NO_LOCKING_FLAG + bit is set, does nothing */ + const buf_block_t* block, /* in: buffer block of rec */ + const rec_t* rec, /* in: user record or page + supremum record which should + be read or passed over by a + read cursor */ + dict_index_t* index, /* in: clustered index */ + enum lock_mode mode, /* in: mode of the lock which + the read cursor should set on + records: LOCK_S or LOCK_X; the + latter is possible in + SELECT FOR UPDATE */ + ulint gap_mode,/* in: LOCK_ORDINARY, LOCK_GAP, or + LOCK_REC_NOT_GAP */ + que_thr_t* thr) /* in: query thread */ +{ + mem_heap_t* tmp_heap = NULL; + ulint offsets_[REC_OFFS_NORMAL_SIZE]; + ulint* offsets = offsets_; + ulint ret; + rec_offs_init(offsets_); + + offsets = rec_get_offsets(rec, index, offsets, + ULINT_UNDEFINED, &tmp_heap); + ret = lock_clust_rec_read_check_and_lock(flags, block, rec, index, + offsets, mode, gap_mode, thr); + if (tmp_heap) { + mem_heap_free(tmp_heap); + } + return(ret); +} + +/*********************************************************************** +Release the last lock from the transaction's autoinc locks. */ +UNIV_INLINE +void +lock_release_autoinc_last_lock( +/*===========================*/ + ib_vector_t* autoinc_locks) /* in/out: vector of AUTOINC locks */ +{ + ulint last; + lock_t* lock; + + ut_ad(mutex_own(&kernel_mutex)); + ut_a(!ib_vector_is_empty(autoinc_locks)); + + /* The lock to be release must be the last lock acquired. */ + last = ib_vector_size(autoinc_locks) - 1; + lock = ib_vector_get(autoinc_locks, last); + + /* Should have only AUTOINC locks in the vector. */ + ut_a(lock_get_mode(lock) == LOCK_AUTO_INC); + ut_a(lock_get_type(lock) == LOCK_TABLE); + + ut_a(lock->un_member.tab_lock.table != NULL); + + /* This will remove the lock from the trx autoinc_locks too. */ + lock_table_dequeue(lock); +} + +/*********************************************************************** +Release all the transaction's autoinc locks. */ +UNIV_INTERN +void +lock_release_autoinc_locks( +/*=======================*/ + trx_t* trx) /* in/out: transaction */ +{ + ut_ad(mutex_own(&kernel_mutex)); + + ut_a(trx->autoinc_locks != NULL); + + /* We release the locks in the reverse order. This is to + avoid searching the vector for the element to delete at + the lower level. See (lock_table_remove_low()) for details. */ + while (!ib_vector_is_empty(trx->autoinc_locks)) { + + /* lock_table_remove_low() will also remove the lock from + the transaction's autoinc_locks vector. */ + lock_release_autoinc_last_lock(trx->autoinc_locks); + } + + /* Should release all locks. */ + ut_a(ib_vector_is_empty(trx->autoinc_locks)); +} + +/*********************************************************************** +Gets the type of a lock. Non-inline version for using outside of the +lock module. */ +UNIV_INTERN +ulint +lock_get_type( +/*==========*/ + /* out: LOCK_TABLE or LOCK_REC */ + const lock_t* lock) /* in: lock */ +{ + return(lock_get_type_low(lock)); +} + +/*********************************************************************** +Gets the id of the transaction owning a lock. */ +UNIV_INTERN +ullint +lock_get_trx_id( +/*============*/ + /* out: transaction id */ + const lock_t* lock) /* in: lock */ +{ + return(trx_get_id(lock->trx)); +} + +/*********************************************************************** +Gets the mode of a lock in a human readable string. +The string should not be free()'d or modified. */ +UNIV_INTERN +const char* +lock_get_mode_str( +/*==============*/ + /* out: lock mode */ + const lock_t* lock) /* in: lock */ +{ + ibool is_gap_lock; + + is_gap_lock = lock_get_type_low(lock) == LOCK_REC + && lock_rec_get_gap(lock); + + switch (lock_get_mode(lock)) { + case LOCK_S: + if (is_gap_lock) { + return("S,GAP"); + } else { + return("S"); + } + case LOCK_X: + if (is_gap_lock) { + return("X,GAP"); + } else { + return("X"); + } + case LOCK_IS: + if (is_gap_lock) { + return("IS,GAP"); + } else { + return("IS"); + } + case LOCK_IX: + if (is_gap_lock) { + return("IX,GAP"); + } else { + return("IX"); + } + case LOCK_AUTO_INC: + return("AUTO_INC"); + default: + return("UNKNOWN"); + } +} + +/*********************************************************************** +Gets the type of a lock in a human readable string. +The string should not be free()'d or modified. */ +UNIV_INTERN +const char* +lock_get_type_str( +/*==============*/ + /* out: lock type */ + const lock_t* lock) /* in: lock */ +{ + switch (lock_get_type_low(lock)) { + case LOCK_REC: + return("RECORD"); + case LOCK_TABLE: + return("TABLE"); + default: + return("UNKNOWN"); + } +} + +/*********************************************************************** +Gets the table on which the lock is. */ +UNIV_INLINE +dict_table_t* +lock_get_table( +/*===========*/ + /* out: table */ + const lock_t* lock) /* in: lock */ +{ + switch (lock_get_type_low(lock)) { + case LOCK_REC: + return(lock->index->table); + case LOCK_TABLE: + return(lock->un_member.tab_lock.table); + default: + ut_error; + return(NULL); + } +} + +/*********************************************************************** +Gets the id of the table on which the lock is. */ +UNIV_INTERN +ullint +lock_get_table_id( +/*==============*/ + /* out: id of the table */ + const lock_t* lock) /* in: lock */ +{ + dict_table_t* table; + + table = lock_get_table(lock); + + return((ullint)ut_conv_dulint_to_longlong(table->id)); +} + +/*********************************************************************** +Gets the name of the table on which the lock is. +The string should not be free()'d or modified. */ +UNIV_INTERN +const char* +lock_get_table_name( +/*================*/ + /* out: name of the table */ + const lock_t* lock) /* in: lock */ +{ + dict_table_t* table; + + table = lock_get_table(lock); + + return(table->name); +} + +/*********************************************************************** +For a record lock, gets the index on which the lock is. */ +UNIV_INTERN +const dict_index_t* +lock_rec_get_index( +/*===============*/ + /* out: index */ + const lock_t* lock) /* in: lock */ +{ + ut_a(lock_get_type_low(lock) == LOCK_REC); + + return(lock->index); +} + +/*********************************************************************** +For a record lock, gets the name of the index on which the lock is. +The string should not be free()'d or modified. */ +UNIV_INTERN +const char* +lock_rec_get_index_name( +/*====================*/ + /* out: name of the index */ + const lock_t* lock) /* in: lock */ +{ + ut_a(lock_get_type_low(lock) == LOCK_REC); + + return(lock->index->name); +} + +/*********************************************************************** +For a record lock, gets the tablespace number on which the lock is. */ +UNIV_INTERN +ulint +lock_rec_get_space_id( +/*==================*/ + /* out: tablespace number */ + const lock_t* lock) /* in: lock */ +{ + ut_a(lock_get_type_low(lock) == LOCK_REC); + + return(lock->un_member.rec_lock.space); +} + +/*********************************************************************** +For a record lock, gets the page number on which the lock is. */ +UNIV_INTERN +ulint +lock_rec_get_page_no( +/*=================*/ + /* out: page number */ + const lock_t* lock) /* in: lock */ +{ + ut_a(lock_get_type_low(lock) == LOCK_REC); + + return(lock->un_member.rec_lock.page_no); +} === added directory 'storage/xtradb/log' === added file 'storage/xtradb/log/log0log.c' --- a/storage/xtradb/log/log0log.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/log/log0log.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,3316 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Database log + +Created 12/9/1995 Heikki Tuuri +*******************************************************/ + +#include "log0log.h" + +#ifdef UNIV_NONINL +#include "log0log.ic" +#endif + +#include "mem0mem.h" +#include "buf0buf.h" +#include "buf0flu.h" +#include "srv0srv.h" +#include "log0recv.h" +#include "fil0fil.h" +#include "dict0boot.h" +#include "srv0srv.h" +#include "srv0start.h" +#include "trx0sys.h" +#include "trx0trx.h" + +/* +General philosophy of InnoDB redo-logs: + +1) Every change to a contents of a data page must be done +through mtr, which in mtr_commit() writes log records +to the InnoDB redo log. + +2) Normally these changes are performed using a mlog_write_ulint() +or similar function. + +3) In some page level operations only a code number of a +c-function and its parameters are written to the log to +reduce the size of the log. + + 3a) You should not add parameters to these kind of functions + (e.g. trx_undo_header_create(), trx_undo_insert_header_reuse()) + + 3b) You should not add such functionality which either change + working when compared with the old or are dependent on data + outside of the page. These kind of functions should implement + self-contained page transformation and it should be unchanged + if you don't have very essential reasons to change log + semantics or format. + +*/ + +/* Current free limit of space 0; protected by the log sys mutex; 0 means +uninitialized */ +UNIV_INTERN ulint log_fsp_current_free_limit = 0; + +/* Global log system variable */ +UNIV_INTERN log_t* log_sys = NULL; + +#ifdef UNIV_DEBUG +UNIV_INTERN ibool log_do_write = TRUE; + +UNIV_INTERN ibool log_debug_writes = FALSE; +#endif /* UNIV_DEBUG */ + +/* These control how often we print warnings if the last checkpoint is too +old */ +UNIV_INTERN ibool log_has_printed_chkp_warning = FALSE; +UNIV_INTERN time_t log_last_warning_time; + +#ifdef UNIV_LOG_ARCHIVE +/* Pointer to this variable is used as the i/o-message when we do i/o to an +archive */ +UNIV_INTERN byte log_archive_io; +#endif /* UNIV_LOG_ARCHIVE */ + +/* A margin for free space in the log buffer before a log entry is catenated */ +#define LOG_BUF_WRITE_MARGIN (4 * OS_FILE_LOG_BLOCK_SIZE) + +/* Margins for free space in the log buffer after a log entry is catenated */ +#define LOG_BUF_FLUSH_RATIO 2 +#define LOG_BUF_FLUSH_MARGIN (LOG_BUF_WRITE_MARGIN + 4 * UNIV_PAGE_SIZE) + +/* Margin for the free space in the smallest log group, before a new query +step which modifies the database, is started */ + +#define LOG_CHECKPOINT_FREE_PER_THREAD (4 * UNIV_PAGE_SIZE) +#define LOG_CHECKPOINT_EXTRA_FREE (8 * UNIV_PAGE_SIZE) + +/* This parameter controls asynchronous making of a new checkpoint; the value +should be bigger than LOG_POOL_PREFLUSH_RATIO_SYNC */ + +#define LOG_POOL_CHECKPOINT_RATIO_ASYNC 32 + +/* This parameter controls synchronous preflushing of modified buffer pages */ +#define LOG_POOL_PREFLUSH_RATIO_SYNC 16 + +/* The same ratio for asynchronous preflushing; this value should be less than +the previous */ +#define LOG_POOL_PREFLUSH_RATIO_ASYNC 8 + +/* Extra margin, in addition to one log file, used in archiving */ +#define LOG_ARCHIVE_EXTRA_MARGIN (4 * UNIV_PAGE_SIZE) + +/* This parameter controls asynchronous writing to the archive */ +#define LOG_ARCHIVE_RATIO_ASYNC 16 + +/* Codes used in unlocking flush latches */ +#define LOG_UNLOCK_NONE_FLUSHED_LOCK 1 +#define LOG_UNLOCK_FLUSH_LOCK 2 + +/* States of an archiving operation */ +#define LOG_ARCHIVE_READ 1 +#define LOG_ARCHIVE_WRITE 2 + +/********************************************************** +Completes a checkpoint write i/o to a log file. */ +static +void +log_io_complete_checkpoint(void); +/*============================*/ +#ifdef UNIV_LOG_ARCHIVE +/********************************************************** +Completes an archiving i/o. */ +static +void +log_io_complete_archive(void); +/*=========================*/ +#endif /* UNIV_LOG_ARCHIVE */ + +/******************************************************************** +Sets the global variable log_fsp_current_free_limit. Also makes a checkpoint, +so that we know that the limit has been written to a log checkpoint field +on disk. */ +UNIV_INTERN +void +log_fsp_current_free_limit_set_and_checkpoint( +/*==========================================*/ + ulint limit) /* in: limit to set */ +{ + ibool success; + + mutex_enter(&(log_sys->mutex)); + + log_fsp_current_free_limit = limit; + + mutex_exit(&(log_sys->mutex)); + + /* Try to make a synchronous checkpoint */ + + success = FALSE; + + while (!success) { + success = log_checkpoint(TRUE, TRUE); + } +} + +/******************************************************************** +Returns the oldest modified block lsn in the pool, or log_sys->lsn if none +exists. */ +static +ib_uint64_t +log_buf_pool_get_oldest_modification(void) +/*======================================*/ +{ + ib_uint64_t lsn; + + ut_ad(mutex_own(&(log_sys->mutex))); + + lsn = buf_pool_get_oldest_modification(); + + if (!lsn) { + + lsn = log_sys->lsn; + } + + return(lsn); +} + +/**************************************************************** +Opens the log for log_write_low. The log must be closed with log_close and +released with log_release. */ +UNIV_INTERN +ib_uint64_t +log_reserve_and_open( +/*=================*/ + /* out: start lsn of the log record */ + ulint len) /* in: length of data to be catenated */ +{ + log_t* log = log_sys; + ulint len_upper_limit; +#ifdef UNIV_LOG_ARCHIVE + ulint archived_lsn_age; + ulint dummy; +#endif /* UNIV_LOG_ARCHIVE */ +#ifdef UNIV_DEBUG + ulint count = 0; +#endif /* UNIV_DEBUG */ + + ut_a(len < log->buf_size / 2); +loop: + mutex_enter(&(log->mutex)); + + /* Calculate an upper limit for the space the string may take in the + log buffer */ + + len_upper_limit = LOG_BUF_WRITE_MARGIN + (5 * len) / 4; + + if (log->buf_free + len_upper_limit > log->buf_size) { + + mutex_exit(&(log->mutex)); + + /* Not enough free space, do a syncronous flush of the log + buffer */ + + log_buffer_flush_to_disk(); + + srv_log_waits++; + + ut_ad(++count < 50); + + goto loop; + } + +#ifdef UNIV_LOG_ARCHIVE + if (log->archiving_state != LOG_ARCH_OFF) { + + archived_lsn_age = log->lsn - log->archived_lsn; + if (archived_lsn_age + len_upper_limit + > log->max_archived_lsn_age) { + /* Not enough free archived space in log groups: do a + synchronous archive write batch: */ + + mutex_exit(&(log->mutex)); + + ut_ad(len_upper_limit <= log->max_archived_lsn_age); + + log_archive_do(TRUE, &dummy); + + ut_ad(++count < 50); + + goto loop; + } + } +#endif /* UNIV_LOG_ARCHIVE */ + +#ifdef UNIV_LOG_DEBUG + log->old_buf_free = log->buf_free; + log->old_lsn = log->lsn; +#endif + return(log->lsn); +} + +/**************************************************************** +Writes to the log the string given. It is assumed that the caller holds the +log mutex. */ +UNIV_INTERN +void +log_write_low( +/*==========*/ + byte* str, /* in: string */ + ulint str_len) /* in: string length */ +{ + log_t* log = log_sys; + ulint len; + ulint data_len; + byte* log_block; + + ut_ad(mutex_own(&(log->mutex))); +part_loop: + /* Calculate a part length */ + + data_len = (log->buf_free % OS_FILE_LOG_BLOCK_SIZE) + str_len; + + if (data_len <= OS_FILE_LOG_BLOCK_SIZE - LOG_BLOCK_TRL_SIZE) { + + /* The string fits within the current log block */ + + len = str_len; + } else { + data_len = OS_FILE_LOG_BLOCK_SIZE - LOG_BLOCK_TRL_SIZE; + + len = OS_FILE_LOG_BLOCK_SIZE + - (log->buf_free % OS_FILE_LOG_BLOCK_SIZE) + - LOG_BLOCK_TRL_SIZE; + } + + ut_memcpy(log->buf + log->buf_free, str, len); + + str_len -= len; + str = str + len; + + log_block = ut_align_down(log->buf + log->buf_free, + OS_FILE_LOG_BLOCK_SIZE); + log_block_set_data_len(log_block, data_len); + + if (data_len == OS_FILE_LOG_BLOCK_SIZE - LOG_BLOCK_TRL_SIZE) { + /* This block became full */ + log_block_set_data_len(log_block, OS_FILE_LOG_BLOCK_SIZE); + log_block_set_checkpoint_no(log_block, + log_sys->next_checkpoint_no); + len += LOG_BLOCK_HDR_SIZE + LOG_BLOCK_TRL_SIZE; + + log->lsn += len; + + /* Initialize the next block header */ + log_block_init(log_block + OS_FILE_LOG_BLOCK_SIZE, log->lsn); + } else { + log->lsn += len; + } + + log->buf_free += len; + + ut_ad(log->buf_free <= log->buf_size); + + if (str_len > 0) { + goto part_loop; + } + + srv_log_write_requests++; +} + +/**************************************************************** +Closes the log. */ +UNIV_INTERN +ib_uint64_t +log_close(void) +/*===========*/ + /* out: lsn */ +{ + byte* log_block; + ulint first_rec_group; + ib_uint64_t oldest_lsn; + ib_uint64_t lsn; + log_t* log = log_sys; + ib_uint64_t checkpoint_age; + + ut_ad(mutex_own(&(log->mutex))); + + lsn = log->lsn; + + log_block = ut_align_down(log->buf + log->buf_free, + OS_FILE_LOG_BLOCK_SIZE); + first_rec_group = log_block_get_first_rec_group(log_block); + + if (first_rec_group == 0) { + /* We initialized a new log block which was not written + full by the current mtr: the next mtr log record group + will start within this block at the offset data_len */ + + log_block_set_first_rec_group( + log_block, log_block_get_data_len(log_block)); + } + + if (log->buf_free > log->max_buf_free) { + + log->check_flush_or_checkpoint = TRUE; + } + + checkpoint_age = lsn - log->last_checkpoint_lsn; + + if (checkpoint_age >= log->log_group_capacity) { + /* TODO: split btr_store_big_rec_extern_fields() into small + steps so that we can release all latches in the middle, and + call log_free_check() to ensure we never write over log written + after the latest checkpoint. In principle, we should split all + big_rec operations, but other operations are smaller. */ + + if (!log_has_printed_chkp_warning + || difftime(time(NULL), log_last_warning_time) > 15) { + + log_has_printed_chkp_warning = TRUE; + log_last_warning_time = time(NULL); + + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: ERROR: the age of the last" + " checkpoint is %lu,\n" + "InnoDB: which exceeds the log group" + " capacity %lu.\n" + "InnoDB: If you are using big" + " BLOB or TEXT rows, you must set the\n" + "InnoDB: combined size of log files" + " at least 10 times bigger than the\n" + "InnoDB: largest such row.\n", + (ulong) checkpoint_age, + (ulong) log->log_group_capacity); + } + } + + if (checkpoint_age <= log->max_modified_age_async) { + + goto function_exit; + } + + oldest_lsn = buf_pool_get_oldest_modification(); + + if (!oldest_lsn + || lsn - oldest_lsn > log->max_modified_age_async + || checkpoint_age > log->max_checkpoint_age_async) { + + log->check_flush_or_checkpoint = TRUE; + } +function_exit: + +#ifdef UNIV_LOG_DEBUG + log_check_log_recs(log->buf + log->old_buf_free, + log->buf_free - log->old_buf_free, log->old_lsn); +#endif + + return(lsn); +} + +#ifdef UNIV_LOG_ARCHIVE +/********************************************************** +Pads the current log block full with dummy log records. Used in producing +consistent archived log files. */ +static +void +log_pad_current_log_block(void) +/*===========================*/ +{ + byte b = MLOG_DUMMY_RECORD; + ulint pad_length; + ulint i; + ib_uint64_t lsn; + + /* We retrieve lsn only because otherwise gcc crashed on HP-UX */ + lsn = log_reserve_and_open(OS_FILE_LOG_BLOCK_SIZE); + + pad_length = OS_FILE_LOG_BLOCK_SIZE + - (log_sys->buf_free % OS_FILE_LOG_BLOCK_SIZE) + - LOG_BLOCK_TRL_SIZE; + + for (i = 0; i < pad_length; i++) { + log_write_low(&b, 1); + } + + lsn = log_sys->lsn; + + log_close(); + log_release(); + + ut_a(lsn % OS_FILE_LOG_BLOCK_SIZE == LOG_BLOCK_HDR_SIZE); +} +#endif /* UNIV_LOG_ARCHIVE */ + +/********************************************************** +Calculates the data capacity of a log group, when the log file headers are not +included. */ +UNIV_INTERN +ulint +log_group_get_capacity( +/*===================*/ + /* out: capacity in bytes */ + log_group_t* group) /* in: log group */ +{ + ut_ad(mutex_own(&(log_sys->mutex))); + + return((group->file_size - LOG_FILE_HDR_SIZE) * group->n_files); +} + +/********************************************************** +Calculates the offset within a log group, when the log file headers are not +included. */ +UNIV_INLINE +ulint +log_group_calc_size_offset( +/*=======================*/ + /* out: size offset (<= offset) */ + ulint offset, /* in: real offset within the log group */ + log_group_t* group) /* in: log group */ +{ + ut_ad(mutex_own(&(log_sys->mutex))); + + return(offset - LOG_FILE_HDR_SIZE * (1 + offset / group->file_size)); +} + +/********************************************************** +Calculates the offset within a log group, when the log file headers are +included. */ +UNIV_INLINE +ulint +log_group_calc_real_offset( +/*=======================*/ + /* out: real offset (>= offset) */ + ulint offset, /* in: size offset within the log group */ + log_group_t* group) /* in: log group */ +{ + ut_ad(mutex_own(&(log_sys->mutex))); + + return(offset + LOG_FILE_HDR_SIZE + * (1 + offset / (group->file_size - LOG_FILE_HDR_SIZE))); +} + +/********************************************************** +Calculates the offset of an lsn within a log group. */ +static +ulint +log_group_calc_lsn_offset( +/*======================*/ + /* out: offset within the log group */ + ib_uint64_t lsn, /* in: lsn, must be within 4 GB of + group->lsn */ + log_group_t* group) /* in: log group */ +{ + ib_uint64_t gr_lsn; + ib_int64_t gr_lsn_size_offset; + ib_int64_t difference; + ib_int64_t group_size; + ib_int64_t offset; + + ut_ad(mutex_own(&(log_sys->mutex))); + + /* If total log file size is > 2 GB we can easily get overflows + with 32-bit integers. Use 64-bit integers instead. */ + + gr_lsn = group->lsn; + + gr_lsn_size_offset = (ib_int64_t) + log_group_calc_size_offset(group->lsn_offset, group); + + group_size = (ib_int64_t) log_group_get_capacity(group); + + if (lsn >= gr_lsn) { + + difference = (ib_int64_t) (lsn - gr_lsn); + } else { + difference = (ib_int64_t) (gr_lsn - lsn); + + difference = difference % group_size; + + difference = group_size - difference; + } + + offset = (gr_lsn_size_offset + difference) % group_size; + + ut_a(offset < (((ib_int64_t) 1) << 32)); /* offset must be < 4 GB */ + + /* fprintf(stderr, + "Offset is %lu gr_lsn_offset is %lu difference is %lu\n", + (ulint)offset,(ulint)gr_lsn_size_offset, (ulint)difference); + */ + + return(log_group_calc_real_offset((ulint)offset, group)); +} + +/*********************************************************************** +Calculates where in log files we find a specified lsn. */ +UNIV_INTERN +ulint +log_calc_where_lsn_is( +/*==================*/ + /* out: log file number */ + ib_int64_t* log_file_offset, /* out: offset in that file + (including the header) */ + ib_uint64_t first_header_lsn, /* in: first log file start + lsn */ + ib_uint64_t lsn, /* in: lsn whose position to + determine */ + ulint n_log_files, /* in: total number of log + files */ + ib_int64_t log_file_size) /* in: log file size + (including the header) */ +{ + ib_int64_t capacity = log_file_size - LOG_FILE_HDR_SIZE; + ulint file_no; + ib_int64_t add_this_many; + + if (lsn < first_header_lsn) { + add_this_many = 1 + (first_header_lsn - lsn) + / (capacity * (ib_int64_t)n_log_files); + lsn += add_this_many + * capacity * (ib_int64_t)n_log_files; + } + + ut_a(lsn >= first_header_lsn); + + file_no = ((ulint)((lsn - first_header_lsn) / capacity)) + % n_log_files; + *log_file_offset = (lsn - first_header_lsn) % capacity; + + *log_file_offset = *log_file_offset + LOG_FILE_HDR_SIZE; + + return(file_no); +} + +/************************************************************ +Sets the field values in group to correspond to a given lsn. For this function +to work, the values must already be correctly initialized to correspond to +some lsn, for instance, a checkpoint lsn. */ +UNIV_INTERN +void +log_group_set_fields( +/*=================*/ + log_group_t* group, /* in: group */ + ib_uint64_t lsn) /* in: lsn for which the values should be + set */ +{ + group->lsn_offset = log_group_calc_lsn_offset(lsn, group); + group->lsn = lsn; +} + +/********************************************************************* +Calculates the recommended highest values for lsn - last_checkpoint_lsn, +lsn - buf_get_oldest_modification(), and lsn - max_archive_lsn_age. */ +static +ibool +log_calc_max_ages(void) +/*===================*/ + /* out: error value FALSE if the smallest log group is + too small to accommodate the number of OS threads in + the database server */ +{ + log_group_t* group; + ulint margin; + ulint free; + ibool success = TRUE; + ulint smallest_capacity; + ulint archive_margin; + ulint smallest_archive_margin; + + ut_ad(!mutex_own(&(log_sys->mutex))); + + mutex_enter(&(log_sys->mutex)); + + group = UT_LIST_GET_FIRST(log_sys->log_groups); + + ut_ad(group); + + smallest_capacity = ULINT_MAX; + smallest_archive_margin = ULINT_MAX; + + while (group) { + if (log_group_get_capacity(group) < smallest_capacity) { + + smallest_capacity = log_group_get_capacity(group); + } + + archive_margin = log_group_get_capacity(group) + - (group->file_size - LOG_FILE_HDR_SIZE) + - LOG_ARCHIVE_EXTRA_MARGIN; + + if (archive_margin < smallest_archive_margin) { + + smallest_archive_margin = archive_margin; + } + + group = UT_LIST_GET_NEXT(log_groups, group); + } + + /* Add extra safety */ + smallest_capacity = smallest_capacity - smallest_capacity / 10; + + /* For each OS thread we must reserve so much free space in the + smallest log group that it can accommodate the log entries produced + by single query steps: running out of free log space is a serious + system error which requires rebooting the database. */ + + free = LOG_CHECKPOINT_FREE_PER_THREAD * (10 + srv_thread_concurrency) + + LOG_CHECKPOINT_EXTRA_FREE; + if (free >= smallest_capacity / 2) { + success = FALSE; + + goto failure; + } else { + margin = smallest_capacity - free; + } + + margin = ut_min(margin, log_sys->adm_checkpoint_interval); + + margin = margin - margin / 10; /* Add still some extra safety */ + + log_sys->log_group_capacity = smallest_capacity; + + log_sys->max_modified_age_async = margin + - margin / LOG_POOL_PREFLUSH_RATIO_ASYNC; + log_sys->max_modified_age_sync = margin + - margin / LOG_POOL_PREFLUSH_RATIO_SYNC; + + log_sys->max_checkpoint_age_async = margin - margin + / LOG_POOL_CHECKPOINT_RATIO_ASYNC; + log_sys->max_checkpoint_age = margin; + +#ifdef UNIV_LOG_ARCHIVE + log_sys->max_archived_lsn_age = smallest_archive_margin; + + log_sys->max_archived_lsn_age_async = smallest_archive_margin + - smallest_archive_margin / LOG_ARCHIVE_RATIO_ASYNC; +#endif /* UNIV_LOG_ARCHIVE */ +failure: + mutex_exit(&(log_sys->mutex)); + + if (!success) { + fprintf(stderr, + "InnoDB: Error: ib_logfiles are too small" + " for innodb_thread_concurrency %lu.\n" + "InnoDB: The combined size of ib_logfiles" + " should be bigger than\n" + "InnoDB: 200 kB * innodb_thread_concurrency.\n" + "InnoDB: To get mysqld to start up, set" + " innodb_thread_concurrency in my.cnf\n" + "InnoDB: to a lower value, for example, to 8." + " After an ERROR-FREE shutdown\n" + "InnoDB: of mysqld you can adjust the size of" + " ib_logfiles, as explained in\n" + "InnoDB: http://dev.mysql.com/doc/refman/5.1/en/" + "adding-and-removing.html\n" + "InnoDB: Cannot continue operation." + " Calling exit(1).\n", + (ulong)srv_thread_concurrency); + + exit(1); + } + + return(success); +} + +/********************************************************** +Initializes the log. */ +UNIV_INTERN +void +log_init(void) +/*==========*/ +{ + byte* buf; + + log_sys = mem_alloc(sizeof(log_t)); + + mutex_create(&log_sys->mutex, SYNC_LOG); + + mutex_enter(&(log_sys->mutex)); + + /* Start the lsn from one log block from zero: this way every + log record has a start lsn != zero, a fact which we will use */ + + log_sys->lsn = LOG_START_LSN; + + ut_a(LOG_BUFFER_SIZE >= 16 * OS_FILE_LOG_BLOCK_SIZE); + ut_a(LOG_BUFFER_SIZE >= 4 * UNIV_PAGE_SIZE); + + buf = mem_alloc(LOG_BUFFER_SIZE + OS_FILE_LOG_BLOCK_SIZE); + log_sys->buf = ut_align(buf, OS_FILE_LOG_BLOCK_SIZE); + + log_sys->buf_size = LOG_BUFFER_SIZE; + + memset(log_sys->buf, '\0', LOG_BUFFER_SIZE); + + log_sys->max_buf_free = log_sys->buf_size / LOG_BUF_FLUSH_RATIO + - LOG_BUF_FLUSH_MARGIN; + log_sys->check_flush_or_checkpoint = TRUE; + UT_LIST_INIT(log_sys->log_groups); + + log_sys->n_log_ios = 0; + + log_sys->n_log_ios_old = log_sys->n_log_ios; + log_sys->last_printout_time = time(NULL); + /*----------------------------*/ + + log_sys->buf_next_to_write = 0; + + log_sys->write_lsn = 0; + log_sys->current_flush_lsn = 0; + log_sys->flushed_to_disk_lsn = 0; + + log_sys->written_to_some_lsn = log_sys->lsn; + log_sys->written_to_all_lsn = log_sys->lsn; + + log_sys->n_pending_writes = 0; + + log_sys->no_flush_event = os_event_create(NULL); + + os_event_set(log_sys->no_flush_event); + + log_sys->one_flushed_event = os_event_create(NULL); + + os_event_set(log_sys->one_flushed_event); + + /*----------------------------*/ + log_sys->adm_checkpoint_interval = ULINT_MAX; + + log_sys->next_checkpoint_no = 0; + log_sys->last_checkpoint_lsn = log_sys->lsn; + log_sys->n_pending_checkpoint_writes = 0; + + rw_lock_create(&log_sys->checkpoint_lock, SYNC_NO_ORDER_CHECK); + + log_sys->checkpoint_buf + = ut_align(mem_alloc(2 * OS_FILE_LOG_BLOCK_SIZE), + OS_FILE_LOG_BLOCK_SIZE); + memset(log_sys->checkpoint_buf, '\0', OS_FILE_LOG_BLOCK_SIZE); + /*----------------------------*/ + +#ifdef UNIV_LOG_ARCHIVE + /* Under MySQL, log archiving is always off */ + log_sys->archiving_state = LOG_ARCH_OFF; + log_sys->archived_lsn = log_sys->lsn; + log_sys->next_archived_lsn = 0; + + log_sys->n_pending_archive_ios = 0; + + rw_lock_create(&log_sys->archive_lock, SYNC_NO_ORDER_CHECK); + + log_sys->archive_buf = NULL; + + /* ut_align( + ut_malloc(LOG_ARCHIVE_BUF_SIZE + + OS_FILE_LOG_BLOCK_SIZE), + OS_FILE_LOG_BLOCK_SIZE); */ + log_sys->archive_buf_size = 0; + + /* memset(log_sys->archive_buf, '\0', LOG_ARCHIVE_BUF_SIZE); */ + + log_sys->archiving_on = os_event_create(NULL); +#endif /* UNIV_LOG_ARCHIVE */ + + /*----------------------------*/ + + log_block_init(log_sys->buf, log_sys->lsn); + log_block_set_first_rec_group(log_sys->buf, LOG_BLOCK_HDR_SIZE); + + log_sys->buf_free = LOG_BLOCK_HDR_SIZE; + log_sys->lsn = LOG_START_LSN + LOG_BLOCK_HDR_SIZE; + + mutex_exit(&(log_sys->mutex)); + +#ifdef UNIV_LOG_DEBUG + recv_sys_create(); + recv_sys_init(FALSE, buf_pool_get_curr_size()); + + recv_sys->parse_start_lsn = log_sys->lsn; + recv_sys->scanned_lsn = log_sys->lsn; + recv_sys->scanned_checkpoint_no = 0; + recv_sys->recovered_lsn = log_sys->lsn; + recv_sys->limit_lsn = IB_ULONGLONG_MAX; +#endif +} + +/********************************************************************** +Inits a log group to the log system. */ +UNIV_INTERN +void +log_group_init( +/*===========*/ + ulint id, /* in: group id */ + ulint n_files, /* in: number of log files */ + ulint file_size, /* in: log file size in bytes */ + ulint space_id, /* in: space id of the file space + which contains the log files of this + group */ + ulint archive_space_id __attribute__((unused))) + /* in: space id of the file space + which contains some archived log + files for this group; currently, only + for the first log group this is + used */ +{ + ulint i; + + log_group_t* group; + + group = mem_alloc(sizeof(log_group_t)); + + group->id = id; + group->n_files = n_files; + group->file_size = file_size; + group->space_id = space_id; + group->state = LOG_GROUP_OK; + group->lsn = LOG_START_LSN; + group->lsn_offset = LOG_FILE_HDR_SIZE; + group->n_pending_writes = 0; + + group->file_header_bufs = mem_alloc(sizeof(byte*) * n_files); +#ifdef UNIV_LOG_ARCHIVE + group->archive_file_header_bufs = mem_alloc(sizeof(byte*) * n_files); +#endif /* UNIV_LOG_ARCHIVE */ + + for (i = 0; i < n_files; i++) { + *(group->file_header_bufs + i) = ut_align( + mem_alloc(LOG_FILE_HDR_SIZE + OS_FILE_LOG_BLOCK_SIZE), + OS_FILE_LOG_BLOCK_SIZE); + + memset(*(group->file_header_bufs + i), '\0', + LOG_FILE_HDR_SIZE); + +#ifdef UNIV_LOG_ARCHIVE + *(group->archive_file_header_bufs + i) = ut_align( + mem_alloc(LOG_FILE_HDR_SIZE + OS_FILE_LOG_BLOCK_SIZE), + OS_FILE_LOG_BLOCK_SIZE); + memset(*(group->archive_file_header_bufs + i), '\0', + LOG_FILE_HDR_SIZE); +#endif /* UNIV_LOG_ARCHIVE */ + } + +#ifdef UNIV_LOG_ARCHIVE + group->archive_space_id = archive_space_id; + + group->archived_file_no = 0; + group->archived_offset = 0; +#endif /* UNIV_LOG_ARCHIVE */ + + group->checkpoint_buf = ut_align( + mem_alloc(2 * OS_FILE_LOG_BLOCK_SIZE), OS_FILE_LOG_BLOCK_SIZE); + + memset(group->checkpoint_buf, '\0', OS_FILE_LOG_BLOCK_SIZE); + + UT_LIST_ADD_LAST(log_groups, log_sys->log_groups, group); + + ut_a(log_calc_max_ages()); +} + +/********************************************************************** +Does the unlockings needed in flush i/o completion. */ +UNIV_INLINE +void +log_flush_do_unlocks( +/*=================*/ + ulint code) /* in: any ORed combination of LOG_UNLOCK_FLUSH_LOCK + and LOG_UNLOCK_NONE_FLUSHED_LOCK */ +{ + ut_ad(mutex_own(&(log_sys->mutex))); + + /* NOTE that we must own the log mutex when doing the setting of the + events: this is because transactions will wait for these events to + be set, and at that moment the log flush they were waiting for must + have ended. If the log mutex were not reserved here, the i/o-thread + calling this function might be preempted for a while, and when it + resumed execution, it might be that a new flush had been started, and + this function would erroneously signal the NEW flush as completed. + Thus, the changes in the state of these events are performed + atomically in conjunction with the changes in the state of + log_sys->n_pending_writes etc. */ + + if (code & LOG_UNLOCK_NONE_FLUSHED_LOCK) { + os_event_set(log_sys->one_flushed_event); + } + + if (code & LOG_UNLOCK_FLUSH_LOCK) { + os_event_set(log_sys->no_flush_event); + } +} + +/********************************************************************** +Checks if a flush is completed for a log group and does the completion +routine if yes. */ +UNIV_INLINE +ulint +log_group_check_flush_completion( +/*=============================*/ + /* out: LOG_UNLOCK_NONE_FLUSHED_LOCK or 0 */ + log_group_t* group) /* in: log group */ +{ + ut_ad(mutex_own(&(log_sys->mutex))); + + if (!log_sys->one_flushed && group->n_pending_writes == 0) { +#ifdef UNIV_DEBUG + if (log_debug_writes) { + fprintf(stderr, + "Log flushed first to group %lu\n", + (ulong) group->id); + } +#endif /* UNIV_DEBUG */ + log_sys->written_to_some_lsn = log_sys->write_lsn; + log_sys->one_flushed = TRUE; + + return(LOG_UNLOCK_NONE_FLUSHED_LOCK); + } + +#ifdef UNIV_DEBUG + if (log_debug_writes && (group->n_pending_writes == 0)) { + + fprintf(stderr, "Log flushed to group %lu\n", + (ulong) group->id); + } +#endif /* UNIV_DEBUG */ + return(0); +} + +/********************************************************** +Checks if a flush is completed and does the completion routine if yes. */ +static +ulint +log_sys_check_flush_completion(void) +/*================================*/ + /* out: LOG_UNLOCK_FLUSH_LOCK or 0 */ +{ + ulint move_start; + ulint move_end; + + ut_ad(mutex_own(&(log_sys->mutex))); + + if (log_sys->n_pending_writes == 0) { + + log_sys->written_to_all_lsn = log_sys->write_lsn; + log_sys->buf_next_to_write = log_sys->write_end_offset; + + if (log_sys->write_end_offset > log_sys->max_buf_free / 2) { + /* Move the log buffer content to the start of the + buffer */ + + move_start = ut_calc_align_down( + log_sys->write_end_offset, + OS_FILE_LOG_BLOCK_SIZE); + move_end = ut_calc_align(log_sys->buf_free, + OS_FILE_LOG_BLOCK_SIZE); + + ut_memmove(log_sys->buf, log_sys->buf + move_start, + move_end - move_start); + log_sys->buf_free -= move_start; + + log_sys->buf_next_to_write -= move_start; + } + + return(LOG_UNLOCK_FLUSH_LOCK); + } + + return(0); +} + +/********************************************************** +Completes an i/o to a log file. */ +UNIV_INTERN +void +log_io_complete( +/*============*/ + log_group_t* group) /* in: log group or a dummy pointer */ +{ + ulint unlock; + +#ifdef UNIV_LOG_ARCHIVE + if ((byte*)group == &log_archive_io) { + /* It was an archive write */ + + log_io_complete_archive(); + + return; + } +#endif /* UNIV_LOG_ARCHIVE */ + + if ((ulint)group & 0x1UL) { + /* It was a checkpoint write */ + group = (log_group_t*)((ulint)group - 1); + + if (srv_unix_file_flush_method != SRV_UNIX_O_DSYNC + && srv_unix_file_flush_method != SRV_UNIX_NOSYNC) { + + fil_flush(group->space_id); + } + +#ifdef UNIV_DEBUG + if (log_debug_writes) { + fprintf(stderr, + "Checkpoint info written to group %lu\n", + group->id); + } +#endif /* UNIV_DEBUG */ + log_io_complete_checkpoint(); + + return; + } + + ut_error; /* We currently use synchronous writing of the + logs and cannot end up here! */ + + if (srv_unix_file_flush_method != SRV_UNIX_O_DSYNC + && srv_unix_file_flush_method != SRV_UNIX_NOSYNC + && srv_flush_log_at_trx_commit != 2) { + + fil_flush(group->space_id); + } + + mutex_enter(&(log_sys->mutex)); + + ut_a(group->n_pending_writes > 0); + ut_a(log_sys->n_pending_writes > 0); + + group->n_pending_writes--; + log_sys->n_pending_writes--; + + unlock = log_group_check_flush_completion(group); + unlock = unlock | log_sys_check_flush_completion(); + + log_flush_do_unlocks(unlock); + + mutex_exit(&(log_sys->mutex)); +} + +/********************************************************** +Writes a log file header to a log file space. */ +static +void +log_group_file_header_flush( +/*========================*/ + log_group_t* group, /* in: log group */ + ulint nth_file, /* in: header to the nth file in the + log file space */ + ib_uint64_t start_lsn) /* in: log file data starts at this + lsn */ +{ + byte* buf; + ulint dest_offset; + + ut_ad(mutex_own(&(log_sys->mutex))); + ut_a(nth_file < group->n_files); + + buf = *(group->file_header_bufs + nth_file); + + mach_write_to_4(buf + LOG_GROUP_ID, group->id); + mach_write_ull(buf + LOG_FILE_START_LSN, start_lsn); + + /* Wipe over possible label of ibbackup --restore */ + memcpy(buf + LOG_FILE_WAS_CREATED_BY_HOT_BACKUP, " ", 4); + + dest_offset = nth_file * group->file_size; + +#ifdef UNIV_DEBUG + if (log_debug_writes) { + fprintf(stderr, + "Writing log file header to group %lu file %lu\n", + (ulong) group->id, (ulong) nth_file); + } +#endif /* UNIV_DEBUG */ + if (log_do_write) { + log_sys->n_log_ios++; + + srv_os_log_pending_writes++; + + fil_io(OS_FILE_WRITE | OS_FILE_LOG, TRUE, group->space_id, 0, + dest_offset / UNIV_PAGE_SIZE, + dest_offset % UNIV_PAGE_SIZE, + OS_FILE_LOG_BLOCK_SIZE, + buf, group); + + srv_os_log_pending_writes--; + } +} + +/********************************************************** +Stores a 4-byte checksum to the trailer checksum field of a log block +before writing it to a log file. This checksum is used in recovery to +check the consistency of a log block. */ +static +void +log_block_store_checksum( +/*=====================*/ + byte* block) /* in/out: pointer to a log block */ +{ + log_block_set_checksum(block, log_block_calc_checksum(block)); +} + +/********************************************************** +Writes a buffer to a log file group. */ +UNIV_INTERN +void +log_group_write_buf( +/*================*/ + log_group_t* group, /* in: log group */ + byte* buf, /* in: buffer */ + ulint len, /* in: buffer len; must be divisible + by OS_FILE_LOG_BLOCK_SIZE */ + ib_uint64_t start_lsn, /* in: start lsn of the buffer; must + be divisible by + OS_FILE_LOG_BLOCK_SIZE */ + ulint new_data_offset)/* in: start offset of new data in + buf: this parameter is used to decide + if we have to write a new log file + header */ +{ + ulint write_len; + ibool write_header; + ulint next_offset; + ulint i; + + ut_ad(mutex_own(&(log_sys->mutex))); + ut_a(len % OS_FILE_LOG_BLOCK_SIZE == 0); + ut_a(((ulint) start_lsn) % OS_FILE_LOG_BLOCK_SIZE == 0); + + if (new_data_offset == 0) { + write_header = TRUE; + } else { + write_header = FALSE; + } +loop: + if (len == 0) { + + return; + } + + next_offset = log_group_calc_lsn_offset(start_lsn, group); + + if ((next_offset % group->file_size == LOG_FILE_HDR_SIZE) + && write_header) { + /* We start to write a new log file instance in the group */ + + log_group_file_header_flush(group, + next_offset / group->file_size, + start_lsn); + srv_os_log_written+= OS_FILE_LOG_BLOCK_SIZE; + srv_log_writes++; + } + + if ((next_offset % group->file_size) + len > group->file_size) { + + write_len = group->file_size + - (next_offset % group->file_size); + } else { + write_len = len; + } + +#ifdef UNIV_DEBUG + if (log_debug_writes) { + + fprintf(stderr, + "Writing log file segment to group %lu" + " offset %lu len %lu\n" + "start lsn %llu\n" + "First block n:o %lu last block n:o %lu\n", + (ulong) group->id, (ulong) next_offset, + (ulong) write_len, + start_lsn, + (ulong) log_block_get_hdr_no(buf), + (ulong) log_block_get_hdr_no( + buf + write_len - OS_FILE_LOG_BLOCK_SIZE)); + ut_a(log_block_get_hdr_no(buf) + == log_block_convert_lsn_to_no(start_lsn)); + + for (i = 0; i < write_len / OS_FILE_LOG_BLOCK_SIZE; i++) { + + ut_a(log_block_get_hdr_no(buf) + i + == log_block_get_hdr_no( + buf + i * OS_FILE_LOG_BLOCK_SIZE)); + } + } +#endif /* UNIV_DEBUG */ + /* Calculate the checksums for each log block and write them to + the trailer fields of the log blocks */ + + for (i = 0; i < write_len / OS_FILE_LOG_BLOCK_SIZE; i++) { + log_block_store_checksum(buf + i * OS_FILE_LOG_BLOCK_SIZE); + } + + if (log_do_write) { + log_sys->n_log_ios++; + + srv_os_log_pending_writes++; + + fil_io(OS_FILE_WRITE | OS_FILE_LOG, TRUE, group->space_id, 0, + next_offset / UNIV_PAGE_SIZE, + next_offset % UNIV_PAGE_SIZE, write_len, buf, group); + + srv_os_log_pending_writes--; + + srv_os_log_written+= write_len; + srv_log_writes++; + } + + if (write_len < len) { + start_lsn += write_len; + len -= write_len; + buf += write_len; + + write_header = TRUE; + + goto loop; + } +} + +/********************************************************** +This function is called, e.g., when a transaction wants to commit. It checks +that the log has been written to the log file up to the last log entry written +by the transaction. If there is a flush running, it waits and checks if the +flush flushed enough. If not, starts a new flush. */ +UNIV_INTERN +void +log_write_up_to( +/*============*/ + ib_uint64_t lsn, /* in: log sequence number up to which + the log should be written, + IB_ULONGLONG_MAX if not specified */ + ulint wait, /* in: LOG_NO_WAIT, LOG_WAIT_ONE_GROUP, + or LOG_WAIT_ALL_GROUPS */ + ibool flush_to_disk) + /* in: TRUE if we want the written log + also to be flushed to disk */ +{ + log_group_t* group; + ulint start_offset; + ulint end_offset; + ulint area_start; + ulint area_end; +#ifdef UNIV_DEBUG + ulint loop_count = 0; +#endif /* UNIV_DEBUG */ + ulint unlock; + + if (recv_no_ibuf_operations) { + /* Recovery is running and no operations on the log files are + allowed yet (the variable name .._no_ibuf_.. is misleading) */ + + return; + } + +loop: +#ifdef UNIV_DEBUG + loop_count++; + + ut_ad(loop_count < 5); + +# if 0 + if (loop_count > 2) { + fprintf(stderr, "Log loop count %lu\n", loop_count); + } +# endif +#endif + + mutex_enter(&(log_sys->mutex)); + + if (flush_to_disk + && log_sys->flushed_to_disk_lsn >= lsn) { + + mutex_exit(&(log_sys->mutex)); + + return; + } + + if (!flush_to_disk + && (log_sys->written_to_all_lsn >= lsn + || (log_sys->written_to_some_lsn >= lsn + && wait != LOG_WAIT_ALL_GROUPS))) { + + mutex_exit(&(log_sys->mutex)); + + return; + } + + if (log_sys->n_pending_writes > 0) { + /* A write (+ possibly flush to disk) is running */ + + if (flush_to_disk + && log_sys->current_flush_lsn >= lsn) { + /* The write + flush will write enough: wait for it to + complete */ + + goto do_waits; + } + + if (!flush_to_disk + && log_sys->write_lsn >= lsn) { + /* The write will write enough: wait for it to + complete */ + + goto do_waits; + } + + mutex_exit(&(log_sys->mutex)); + + /* Wait for the write to complete and try to start a new + write */ + + os_event_wait(log_sys->no_flush_event); + + goto loop; + } + + if (!flush_to_disk + && log_sys->buf_free == log_sys->buf_next_to_write) { + /* Nothing to write and no flush to disk requested */ + + mutex_exit(&(log_sys->mutex)); + + return; + } + +#ifdef UNIV_DEBUG + if (log_debug_writes) { + fprintf(stderr, + "Writing log from %llu up to lsn %llu\n", + log_sys->written_to_all_lsn, + log_sys->lsn); + } +#endif /* UNIV_DEBUG */ + log_sys->n_pending_writes++; + + group = UT_LIST_GET_FIRST(log_sys->log_groups); + group->n_pending_writes++; /* We assume here that we have only + one log group! */ + + os_event_reset(log_sys->no_flush_event); + os_event_reset(log_sys->one_flushed_event); + + start_offset = log_sys->buf_next_to_write; + end_offset = log_sys->buf_free; + + area_start = ut_calc_align_down(start_offset, OS_FILE_LOG_BLOCK_SIZE); + area_end = ut_calc_align(end_offset, OS_FILE_LOG_BLOCK_SIZE); + + ut_ad(area_end - area_start > 0); + + log_sys->write_lsn = log_sys->lsn; + + if (flush_to_disk) { + log_sys->current_flush_lsn = log_sys->lsn; + } + + log_sys->one_flushed = FALSE; + + log_block_set_flush_bit(log_sys->buf + area_start, TRUE); + log_block_set_checkpoint_no( + log_sys->buf + area_end - OS_FILE_LOG_BLOCK_SIZE, + log_sys->next_checkpoint_no); + + /* Copy the last, incompletely written, log block a log block length + up, so that when the flush operation writes from the log buffer, the + segment to write will not be changed by writers to the log */ + + ut_memcpy(log_sys->buf + area_end, + log_sys->buf + area_end - OS_FILE_LOG_BLOCK_SIZE, + OS_FILE_LOG_BLOCK_SIZE); + + log_sys->buf_free += OS_FILE_LOG_BLOCK_SIZE; + log_sys->write_end_offset = log_sys->buf_free; + + group = UT_LIST_GET_FIRST(log_sys->log_groups); + + /* Do the write to the log files */ + + while (group) { + log_group_write_buf( + group, log_sys->buf + area_start, + area_end - area_start, + ut_uint64_align_down(log_sys->written_to_all_lsn, + OS_FILE_LOG_BLOCK_SIZE), + start_offset - area_start); + + log_group_set_fields(group, log_sys->write_lsn); + + group = UT_LIST_GET_NEXT(log_groups, group); + } + + mutex_exit(&(log_sys->mutex)); + + if (srv_unix_file_flush_method == SRV_UNIX_O_DSYNC) { + /* O_DSYNC means the OS did not buffer the log file at all: + so we have also flushed to disk what we have written */ + + log_sys->flushed_to_disk_lsn = log_sys->write_lsn; + + } else if (flush_to_disk) { + + group = UT_LIST_GET_FIRST(log_sys->log_groups); + + fil_flush(group->space_id); + log_sys->flushed_to_disk_lsn = log_sys->write_lsn; + } + + mutex_enter(&(log_sys->mutex)); + + group = UT_LIST_GET_FIRST(log_sys->log_groups); + + ut_a(group->n_pending_writes == 1); + ut_a(log_sys->n_pending_writes == 1); + + group->n_pending_writes--; + log_sys->n_pending_writes--; + + unlock = log_group_check_flush_completion(group); + unlock = unlock | log_sys_check_flush_completion(); + + log_flush_do_unlocks(unlock); + + mutex_exit(&(log_sys->mutex)); + + return; + +do_waits: + mutex_exit(&(log_sys->mutex)); + + switch (wait) { + case LOG_WAIT_ONE_GROUP: + os_event_wait(log_sys->one_flushed_event); + break; + case LOG_WAIT_ALL_GROUPS: + os_event_wait(log_sys->no_flush_event); + break; +#ifdef UNIV_DEBUG + case LOG_NO_WAIT: + break; + default: + ut_error; +#endif /* UNIV_DEBUG */ + } +} + +/******************************************************************** +Does a syncronous flush of the log buffer to disk. */ +UNIV_INTERN +void +log_buffer_flush_to_disk(void) +/*==========================*/ +{ + ib_uint64_t lsn; + + mutex_enter(&(log_sys->mutex)); + + lsn = log_sys->lsn; + + mutex_exit(&(log_sys->mutex)); + + log_write_up_to(lsn, LOG_WAIT_ALL_GROUPS, TRUE); +} + +/******************************************************************** +Tries to establish a big enough margin of free space in the log buffer, such +that a new log entry can be catenated without an immediate need for a flush. */ +static +void +log_flush_margin(void) +/*==================*/ +{ + log_t* log = log_sys; + ib_uint64_t lsn = 0; + + mutex_enter(&(log->mutex)); + + if (log->buf_free > log->max_buf_free) { + + if (log->n_pending_writes > 0) { + /* A flush is running: hope that it will provide enough + free space */ + } else { + lsn = log->lsn; + } + } + + mutex_exit(&(log->mutex)); + + if (lsn) { + log_write_up_to(lsn, LOG_NO_WAIT, FALSE); + } +} + +/******************************************************************** +Advances the smallest lsn for which there are unflushed dirty blocks in the +buffer pool. NOTE: this function may only be called if the calling thread owns +no synchronization objects! */ +UNIV_INTERN +ibool +log_preflush_pool_modified_pages( +/*=============================*/ + /* out: FALSE if there was a + flush batch of the same type + running, which means that we + could not start this flush + batch */ + ib_uint64_t new_oldest, /* in: try to advance + oldest_modified_lsn at least + to this lsn */ + ibool sync) /* in: TRUE if synchronous + operation is desired */ +{ + ulint n_pages; + + if (recv_recovery_on) { + /* If the recovery is running, we must first apply all + log records to their respective file pages to get the + right modify lsn values to these pages: otherwise, there + might be pages on disk which are not yet recovered to the + current lsn, and even after calling this function, we could + not know how up-to-date the disk version of the database is, + and we could not make a new checkpoint on the basis of the + info on the buffer pool only. */ + + recv_apply_hashed_log_recs(TRUE); + } + + n_pages = buf_flush_batch(BUF_FLUSH_LIST, ULINT_MAX, new_oldest); + + if (sync) { + buf_flush_wait_batch_end(BUF_FLUSH_LIST); + } + + if (n_pages == ULINT_UNDEFINED) { + + return(FALSE); + } + + return(TRUE); +} + +/********************************************************** +Completes a checkpoint. */ +static +void +log_complete_checkpoint(void) +/*=========================*/ +{ + ut_ad(mutex_own(&(log_sys->mutex))); + ut_ad(log_sys->n_pending_checkpoint_writes == 0); + + log_sys->next_checkpoint_no++; + + log_sys->last_checkpoint_lsn = log_sys->next_checkpoint_lsn; + + rw_lock_x_unlock_gen(&(log_sys->checkpoint_lock), LOG_CHECKPOINT); +} + +/********************************************************** +Completes an asynchronous checkpoint info write i/o to a log file. */ +static +void +log_io_complete_checkpoint(void) +/*============================*/ +{ + mutex_enter(&(log_sys->mutex)); + + ut_ad(log_sys->n_pending_checkpoint_writes > 0); + + log_sys->n_pending_checkpoint_writes--; + + if (log_sys->n_pending_checkpoint_writes == 0) { + log_complete_checkpoint(); + } + + mutex_exit(&(log_sys->mutex)); +} + +/*********************************************************************** +Writes info to a checkpoint about a log group. */ +static +void +log_checkpoint_set_nth_group_info( +/*==============================*/ + byte* buf, /* in: buffer for checkpoint info */ + ulint n, /* in: nth slot */ + ulint file_no,/* in: archived file number */ + ulint offset) /* in: archived file offset */ +{ + ut_ad(n < LOG_MAX_N_GROUPS); + + mach_write_to_4(buf + LOG_CHECKPOINT_GROUP_ARRAY + + 8 * n + LOG_CHECKPOINT_ARCHIVED_FILE_NO, file_no); + mach_write_to_4(buf + LOG_CHECKPOINT_GROUP_ARRAY + + 8 * n + LOG_CHECKPOINT_ARCHIVED_OFFSET, offset); +} + +/*********************************************************************** +Gets info from a checkpoint about a log group. */ +UNIV_INTERN +void +log_checkpoint_get_nth_group_info( +/*==============================*/ + byte* buf, /* in: buffer containing checkpoint info */ + ulint n, /* in: nth slot */ + ulint* file_no,/* out: archived file number */ + ulint* offset) /* out: archived file offset */ +{ + ut_ad(n < LOG_MAX_N_GROUPS); + + *file_no = mach_read_from_4(buf + LOG_CHECKPOINT_GROUP_ARRAY + + 8 * n + LOG_CHECKPOINT_ARCHIVED_FILE_NO); + *offset = mach_read_from_4(buf + LOG_CHECKPOINT_GROUP_ARRAY + + 8 * n + LOG_CHECKPOINT_ARCHIVED_OFFSET); +} + +/********************************************************** +Writes the checkpoint info to a log group header. */ +static +void +log_group_checkpoint( +/*=================*/ + log_group_t* group) /* in: log group */ +{ + log_group_t* group2; +#ifdef UNIV_LOG_ARCHIVE + ib_uint64_t archived_lsn; + ib_uint64_t next_archived_lsn; +#endif /* UNIV_LOG_ARCHIVE */ + ulint write_offset; + ulint fold; + byte* buf; + ulint i; + + ut_ad(mutex_own(&(log_sys->mutex))); +#if LOG_CHECKPOINT_SIZE > OS_FILE_LOG_BLOCK_SIZE +# error "LOG_CHECKPOINT_SIZE > OS_FILE_LOG_BLOCK_SIZE" +#endif + + buf = group->checkpoint_buf; + + mach_write_ull(buf + LOG_CHECKPOINT_NO, log_sys->next_checkpoint_no); + mach_write_ull(buf + LOG_CHECKPOINT_LSN, log_sys->next_checkpoint_lsn); + + mach_write_to_4(buf + LOG_CHECKPOINT_OFFSET, + log_group_calc_lsn_offset( + log_sys->next_checkpoint_lsn, group)); + + mach_write_to_4(buf + LOG_CHECKPOINT_LOG_BUF_SIZE, log_sys->buf_size); + +#ifdef UNIV_LOG_ARCHIVE + if (log_sys->archiving_state == LOG_ARCH_OFF) { + archived_lsn = IB_ULONGLONG_MAX; + } else { + archived_lsn = log_sys->archived_lsn; + + if (archived_lsn != log_sys->next_archived_lsn) { + next_archived_lsn = log_sys->next_archived_lsn; + /* For debugging only */ + } + } + + mach_write_ull(buf + LOG_CHECKPOINT_ARCHIVED_LSN, archived_lsn); +#else /* UNIV_LOG_ARCHIVE */ + mach_write_ull(buf + LOG_CHECKPOINT_ARCHIVED_LSN, IB_ULONGLONG_MAX); +#endif /* UNIV_LOG_ARCHIVE */ + + for (i = 0; i < LOG_MAX_N_GROUPS; i++) { + log_checkpoint_set_nth_group_info(buf, i, 0, 0); + } + + group2 = UT_LIST_GET_FIRST(log_sys->log_groups); + + while (group2) { + log_checkpoint_set_nth_group_info(buf, group2->id, +#ifdef UNIV_LOG_ARCHIVE + group2->archived_file_no, + group2->archived_offset +#else /* UNIV_LOG_ARCHIVE */ + 0, 0 +#endif /* UNIV_LOG_ARCHIVE */ + ); + + group2 = UT_LIST_GET_NEXT(log_groups, group2); + } + + fold = ut_fold_binary(buf, LOG_CHECKPOINT_CHECKSUM_1); + mach_write_to_4(buf + LOG_CHECKPOINT_CHECKSUM_1, fold); + + fold = ut_fold_binary(buf + LOG_CHECKPOINT_LSN, + LOG_CHECKPOINT_CHECKSUM_2 - LOG_CHECKPOINT_LSN); + mach_write_to_4(buf + LOG_CHECKPOINT_CHECKSUM_2, fold); + + /* Starting from InnoDB-3.23.50, we also write info on allocated + size in the tablespace */ + + mach_write_to_4(buf + LOG_CHECKPOINT_FSP_FREE_LIMIT, + log_fsp_current_free_limit); + + mach_write_to_4(buf + LOG_CHECKPOINT_FSP_MAGIC_N, + LOG_CHECKPOINT_FSP_MAGIC_N_VAL); + + /* We alternate the physical place of the checkpoint info in the first + log file */ + + if ((log_sys->next_checkpoint_no & 1) == 0) { + write_offset = LOG_CHECKPOINT_1; + } else { + write_offset = LOG_CHECKPOINT_2; + } + + if (log_do_write) { + if (log_sys->n_pending_checkpoint_writes == 0) { + + rw_lock_x_lock_gen(&(log_sys->checkpoint_lock), + LOG_CHECKPOINT); + } + + log_sys->n_pending_checkpoint_writes++; + + log_sys->n_log_ios++; + + /* We send as the last parameter the group machine address + added with 1, as we want to distinguish between a normal log + file write and a checkpoint field write */ + + fil_io(OS_FILE_WRITE | OS_FILE_LOG, FALSE, group->space_id, 0, + write_offset / UNIV_PAGE_SIZE, + write_offset % UNIV_PAGE_SIZE, + OS_FILE_LOG_BLOCK_SIZE, + buf, ((byte*)group + 1)); + + ut_ad(((ulint)group & 0x1UL) == 0); + } +} + +#ifdef UNIV_HOTBACKUP +/********************************************************** +Writes info to a buffer of a log group when log files are created in +backup restoration. */ +UNIV_INTERN +void +log_reset_first_header_and_checkpoint( +/*==================================*/ + byte* hdr_buf,/* in: buffer which will be written to the + start of the first log file */ + ib_uint64_t start) /* in: lsn of the start of the first log file; + we pretend that there is a checkpoint at + start + LOG_BLOCK_HDR_SIZE */ +{ + ulint fold; + byte* buf; + ib_uint64_t lsn; + + mach_write_to_4(hdr_buf + LOG_GROUP_ID, 0); + mach_write_ull(hdr_buf + LOG_FILE_START_LSN, start); + + lsn = start + LOG_BLOCK_HDR_SIZE; + + /* Write the label of ibbackup --restore */ + strcpy((char*) hdr_buf + LOG_FILE_WAS_CREATED_BY_HOT_BACKUP, + "ibbackup "); + ut_sprintf_timestamp((char*) hdr_buf + + (LOG_FILE_WAS_CREATED_BY_HOT_BACKUP + + (sizeof "ibbackup ") - 1)); + buf = hdr_buf + LOG_CHECKPOINT_1; + + mach_write_ull(buf + LOG_CHECKPOINT_NO, 0); + mach_write_ull(buf + LOG_CHECKPOINT_LSN, lsn); + + mach_write_to_4(buf + LOG_CHECKPOINT_OFFSET, + LOG_FILE_HDR_SIZE + LOG_BLOCK_HDR_SIZE); + + mach_write_to_4(buf + LOG_CHECKPOINT_LOG_BUF_SIZE, 2 * 1024 * 1024); + + mach_write_ull(buf + LOG_CHECKPOINT_ARCHIVED_LSN, IB_ULONGLONG_MAX); + + fold = ut_fold_binary(buf, LOG_CHECKPOINT_CHECKSUM_1); + mach_write_to_4(buf + LOG_CHECKPOINT_CHECKSUM_1, fold); + + fold = ut_fold_binary(buf + LOG_CHECKPOINT_LSN, + LOG_CHECKPOINT_CHECKSUM_2 - LOG_CHECKPOINT_LSN); + mach_write_to_4(buf + LOG_CHECKPOINT_CHECKSUM_2, fold); + + /* Starting from InnoDB-3.23.50, we should also write info on + allocated size in the tablespace, but unfortunately we do not + know it here */ +} +#endif /* UNIV_HOTBACKUP */ + +/********************************************************** +Reads a checkpoint info from a log group header to log_sys->checkpoint_buf. */ +UNIV_INTERN +void +log_group_read_checkpoint_info( +/*===========================*/ + log_group_t* group, /* in: log group */ + ulint field) /* in: LOG_CHECKPOINT_1 or LOG_CHECKPOINT_2 */ +{ + ut_ad(mutex_own(&(log_sys->mutex))); + + log_sys->n_log_ios++; + + fil_io(OS_FILE_READ | OS_FILE_LOG, TRUE, group->space_id, 0, + field / UNIV_PAGE_SIZE, field % UNIV_PAGE_SIZE, + OS_FILE_LOG_BLOCK_SIZE, log_sys->checkpoint_buf, NULL); +} + +/********************************************************** +Writes checkpoint info to groups. */ +UNIV_INTERN +void +log_groups_write_checkpoint_info(void) +/*==================================*/ +{ + log_group_t* group; + + ut_ad(mutex_own(&(log_sys->mutex))); + + group = UT_LIST_GET_FIRST(log_sys->log_groups); + + while (group) { + log_group_checkpoint(group); + + group = UT_LIST_GET_NEXT(log_groups, group); + } +} + +/********************************************************** +Makes a checkpoint. Note that this function does not flush dirty +blocks from the buffer pool: it only checks what is lsn of the oldest +modification in the pool, and writes information about the lsn in +log files. Use log_make_checkpoint_at to flush also the pool. */ +UNIV_INTERN +ibool +log_checkpoint( +/*===========*/ + /* out: TRUE if success, FALSE if a checkpoint + write was already running */ + ibool sync, /* in: TRUE if synchronous operation is + desired */ + ibool write_always) /* in: the function normally checks if the + the new checkpoint would have a greater + lsn than the previous one: if not, then no + physical write is done; by setting this + parameter TRUE, a physical write will always be + made to log files */ +{ + ib_uint64_t oldest_lsn; + + if (recv_recovery_is_on()) { + recv_apply_hashed_log_recs(TRUE); + } + + if (srv_unix_file_flush_method != SRV_UNIX_NOSYNC) { + fil_flush_file_spaces(FIL_TABLESPACE); + } + + mutex_enter(&(log_sys->mutex)); + + oldest_lsn = log_buf_pool_get_oldest_modification(); + + mutex_exit(&(log_sys->mutex)); + + /* Because log also contains headers and dummy log records, + if the buffer pool contains no dirty buffers, oldest_lsn + gets the value log_sys->lsn from the previous function, + and we must make sure that the log is flushed up to that + lsn. If there are dirty buffers in the buffer pool, then our + write-ahead-logging algorithm ensures that the log has been flushed + up to oldest_lsn. */ + + log_write_up_to(oldest_lsn, LOG_WAIT_ALL_GROUPS, TRUE); + + mutex_enter(&(log_sys->mutex)); + + if (!write_always + && log_sys->last_checkpoint_lsn >= oldest_lsn) { + + mutex_exit(&(log_sys->mutex)); + + return(TRUE); + } + + ut_ad(log_sys->written_to_all_lsn >= oldest_lsn); + + if (log_sys->n_pending_checkpoint_writes > 0) { + /* A checkpoint write is running */ + + mutex_exit(&(log_sys->mutex)); + + if (sync) { + /* Wait for the checkpoint write to complete */ + rw_lock_s_lock(&(log_sys->checkpoint_lock)); + rw_lock_s_unlock(&(log_sys->checkpoint_lock)); + } + + return(FALSE); + } + + log_sys->next_checkpoint_lsn = oldest_lsn; + +#ifdef UNIV_DEBUG + if (log_debug_writes) { + fprintf(stderr, "Making checkpoint no %lu at lsn %llu\n", + (ulong) log_sys->next_checkpoint_no, + oldest_lsn); + } +#endif /* UNIV_DEBUG */ + + log_groups_write_checkpoint_info(); + + mutex_exit(&(log_sys->mutex)); + + if (sync) { + /* Wait for the checkpoint write to complete */ + rw_lock_s_lock(&(log_sys->checkpoint_lock)); + rw_lock_s_unlock(&(log_sys->checkpoint_lock)); + } + + return(TRUE); +} + +/******************************************************************** +Makes a checkpoint at a given lsn or later. */ +UNIV_INTERN +void +log_make_checkpoint_at( +/*===================*/ + ib_uint64_t lsn, /* in: make a checkpoint at this or a + later lsn, if IB_ULONGLONG_MAX, makes + a checkpoint at the latest lsn */ + ibool write_always) /* in: the function normally checks if + the the new checkpoint would have a + greater lsn than the previous one: if + not, then no physical write is done; + by setting this parameter TRUE, a + physical write will always be made to + log files */ +{ + /* Preflush pages synchronously */ + + while (!log_preflush_pool_modified_pages(lsn, TRUE)); + + while (!log_checkpoint(TRUE, write_always)); +} + +/******************************************************************** +Tries to establish a big enough margin of free space in the log groups, such +that a new log entry can be catenated without an immediate need for a +checkpoint. NOTE: this function may only be called if the calling thread +owns no synchronization objects! */ +static +void +log_checkpoint_margin(void) +/*=======================*/ +{ + log_t* log = log_sys; + ib_uint64_t age; + ib_uint64_t checkpoint_age; + ib_uint64_t advance; + ib_uint64_t oldest_lsn; + ibool sync; + ibool checkpoint_sync; + ibool do_checkpoint; + ibool success; +loop: + sync = FALSE; + checkpoint_sync = FALSE; + do_checkpoint = FALSE; + + mutex_enter(&(log->mutex)); + + if (log->check_flush_or_checkpoint == FALSE) { + mutex_exit(&(log->mutex)); + + return; + } + + oldest_lsn = log_buf_pool_get_oldest_modification(); + + age = log->lsn - oldest_lsn; + + if (age > log->max_modified_age_sync) { + + /* A flush is urgent: we have to do a synchronous preflush */ + + sync = TRUE; + advance = 2 * (age - log->max_modified_age_sync); + } else if (age > log->max_modified_age_async) { + + /* A flush is not urgent: we do an asynchronous preflush */ + advance = age - log->max_modified_age_async; + } else { + advance = 0; + } + + checkpoint_age = log->lsn - log->last_checkpoint_lsn; + + if (checkpoint_age > log->max_checkpoint_age) { + /* A checkpoint is urgent: we do it synchronously */ + + checkpoint_sync = TRUE; + + do_checkpoint = TRUE; + + } else if (checkpoint_age > log->max_checkpoint_age_async) { + /* A checkpoint is not urgent: do it asynchronously */ + + do_checkpoint = TRUE; + + log->check_flush_or_checkpoint = FALSE; + } else { + log->check_flush_or_checkpoint = FALSE; + } + + mutex_exit(&(log->mutex)); + + if (advance) { + ib_uint64_t new_oldest = oldest_lsn + advance; + + success = log_preflush_pool_modified_pages(new_oldest, sync); + + /* If the flush succeeded, this thread has done its part + and can proceed. If it did not succeed, there was another + thread doing a flush at the same time. If sync was FALSE, + the flush was not urgent, and we let this thread proceed. + Otherwise, we let it start from the beginning again. */ + + if (sync && !success) { + mutex_enter(&(log->mutex)); + + log->check_flush_or_checkpoint = TRUE; + + mutex_exit(&(log->mutex)); + goto loop; + } + } + + if (do_checkpoint) { + log_checkpoint(checkpoint_sync, FALSE); + + if (checkpoint_sync) { + + goto loop; + } + } +} + +/********************************************************** +Reads a specified log segment to a buffer. */ +UNIV_INTERN +void +log_group_read_log_seg( +/*===================*/ + ulint type, /* in: LOG_ARCHIVE or LOG_RECOVER */ + byte* buf, /* in: buffer where to read */ + log_group_t* group, /* in: log group */ + ib_uint64_t start_lsn, /* in: read area start */ + ib_uint64_t end_lsn) /* in: read area end */ +{ + ulint len; + ulint source_offset; + ibool sync; + + ut_ad(mutex_own(&(log_sys->mutex))); + + sync = (type == LOG_RECOVER); +loop: + source_offset = log_group_calc_lsn_offset(start_lsn, group); + + len = (ulint) (end_lsn - start_lsn); + + ut_ad(len != 0); + + if ((source_offset % group->file_size) + len > group->file_size) { + + len = group->file_size - (source_offset % group->file_size); + } + +#ifdef UNIV_LOG_ARCHIVE + if (type == LOG_ARCHIVE) { + + log_sys->n_pending_archive_ios++; + } +#endif /* UNIV_LOG_ARCHIVE */ + + log_sys->n_log_ios++; + + fil_io(OS_FILE_READ | OS_FILE_LOG, sync, group->space_id, 0, + source_offset / UNIV_PAGE_SIZE, source_offset % UNIV_PAGE_SIZE, + len, buf, NULL); + + start_lsn += len; + buf += len; + + if (start_lsn != end_lsn) { + + goto loop; + } +} + +#ifdef UNIV_LOG_ARCHIVE +/********************************************************** +Generates an archived log file name. */ +UNIV_INTERN +void +log_archived_file_name_gen( +/*=======================*/ + char* buf, /* in: buffer where to write */ + ulint id __attribute__((unused)), + /* in: group id; + currently we only archive the first group */ + ulint file_no)/* in: file number */ +{ + sprintf(buf, "%sib_arch_log_%010lu", srv_arch_dir, (ulong) file_no); +} + +/********************************************************** +Writes a log file header to a log file space. */ +static +void +log_group_archive_file_header_write( +/*================================*/ + log_group_t* group, /* in: log group */ + ulint nth_file, /* in: header to the nth file in the + archive log file space */ + ulint file_no, /* in: archived file number */ + ib_uint64_t start_lsn) /* in: log file data starts at this + lsn */ +{ + byte* buf; + ulint dest_offset; + + ut_ad(mutex_own(&(log_sys->mutex))); + + ut_a(nth_file < group->n_files); + + buf = *(group->archive_file_header_bufs + nth_file); + + mach_write_to_4(buf + LOG_GROUP_ID, group->id); + mach_write_ull(buf + LOG_FILE_START_LSN, start_lsn); + mach_write_to_4(buf + LOG_FILE_NO, file_no); + + mach_write_to_4(buf + LOG_FILE_ARCH_COMPLETED, FALSE); + + dest_offset = nth_file * group->file_size; + + log_sys->n_log_ios++; + + fil_io(OS_FILE_WRITE | OS_FILE_LOG, TRUE, group->archive_space_id, + dest_offset / UNIV_PAGE_SIZE, + dest_offset % UNIV_PAGE_SIZE, + 2 * OS_FILE_LOG_BLOCK_SIZE, + buf, &log_archive_io); +} + +/********************************************************** +Writes a log file header to a completed archived log file. */ +static +void +log_group_archive_completed_header_write( +/*=====================================*/ + log_group_t* group, /* in: log group */ + ulint nth_file, /* in: header to the nth file in the + archive log file space */ + ib_uint64_t end_lsn) /* in: end lsn of the file */ +{ + byte* buf; + ulint dest_offset; + + ut_ad(mutex_own(&(log_sys->mutex))); + ut_a(nth_file < group->n_files); + + buf = *(group->archive_file_header_bufs + nth_file); + + mach_write_to_4(buf + LOG_FILE_ARCH_COMPLETED, TRUE); + mach_write_ull(buf + LOG_FILE_END_LSN, end_lsn); + + dest_offset = nth_file * group->file_size + LOG_FILE_ARCH_COMPLETED; + + log_sys->n_log_ios++; + + fil_io(OS_FILE_WRITE | OS_FILE_LOG, TRUE, group->archive_space_id, + dest_offset / UNIV_PAGE_SIZE, + dest_offset % UNIV_PAGE_SIZE, + OS_FILE_LOG_BLOCK_SIZE, + buf + LOG_FILE_ARCH_COMPLETED, + &log_archive_io); +} + +/********************************************************** +Does the archive writes for a single log group. */ +static +void +log_group_archive( +/*==============*/ + log_group_t* group) /* in: log group */ +{ + os_file_t file_handle; + ib_uint64_t start_lsn; + ib_uint64_t end_lsn; + char name[1024]; + byte* buf; + ulint len; + ibool ret; + ulint next_offset; + ulint n_files; + ulint open_mode; + + ut_ad(mutex_own(&(log_sys->mutex))); + + start_lsn = log_sys->archived_lsn; + + ut_a(start_lsn % OS_FILE_LOG_BLOCK_SIZE == 0); + + end_lsn = log_sys->next_archived_lsn; + + ut_a(end_lsn % OS_FILE_LOG_BLOCK_SIZE == 0); + + buf = log_sys->archive_buf; + + n_files = 0; + + next_offset = group->archived_offset; +loop: + if ((next_offset % group->file_size == 0) + || (fil_space_get_size(group->archive_space_id) == 0)) { + + /* Add the file to the archive file space; create or open the + file */ + + if (next_offset % group->file_size == 0) { + open_mode = OS_FILE_CREATE; + } else { + open_mode = OS_FILE_OPEN; + } + + log_archived_file_name_gen(name, group->id, + group->archived_file_no + n_files); + + file_handle = os_file_create(name, open_mode, OS_FILE_AIO, + OS_DATA_FILE, &ret); + + if (!ret && (open_mode == OS_FILE_CREATE)) { + file_handle = os_file_create( + name, OS_FILE_OPEN, OS_FILE_AIO, + OS_DATA_FILE, &ret); + } + + if (!ret) { + fprintf(stderr, + "InnoDB: Cannot create or open" + " archive log file %s.\n" + "InnoDB: Cannot continue operation.\n" + "InnoDB: Check that the log archive" + " directory exists,\n" + "InnoDB: you have access rights to it, and\n" + "InnoDB: there is space available.\n", name); + exit(1); + } + +#ifdef UNIV_DEBUG + if (log_debug_writes) { + fprintf(stderr, "Created archive file %s\n", name); + } +#endif /* UNIV_DEBUG */ + + ret = os_file_close(file_handle); + + ut_a(ret); + + /* Add the archive file as a node to the space */ + + fil_node_create(name, group->file_size / UNIV_PAGE_SIZE, + group->archive_space_id, FALSE); + + if (next_offset % group->file_size == 0) { + log_group_archive_file_header_write( + group, n_files, + group->archived_file_no + n_files, + start_lsn); + + next_offset += LOG_FILE_HDR_SIZE; + } + } + + len = end_lsn - start_lsn; + + if (group->file_size < (next_offset % group->file_size) + len) { + + len = group->file_size - (next_offset % group->file_size); + } + +#ifdef UNIV_DEBUG + if (log_debug_writes) { + fprintf(stderr, + "Archiving starting at lsn %llu, len %lu" + " to group %lu\n", + start_lsn, + (ulong) len, (ulong) group->id); + } +#endif /* UNIV_DEBUG */ + + log_sys->n_pending_archive_ios++; + + log_sys->n_log_ios++; + + fil_io(OS_FILE_WRITE | OS_FILE_LOG, FALSE, group->archive_space_id, + next_offset / UNIV_PAGE_SIZE, next_offset % UNIV_PAGE_SIZE, + ut_calc_align(len, OS_FILE_LOG_BLOCK_SIZE), buf, + &log_archive_io); + + start_lsn += len; + next_offset += len; + buf += len; + + if (next_offset % group->file_size == 0) { + n_files++; + } + + if (end_lsn != start_lsn) { + + goto loop; + } + + group->next_archived_file_no = group->archived_file_no + n_files; + group->next_archived_offset = next_offset % group->file_size; + + ut_a(group->next_archived_offset % OS_FILE_LOG_BLOCK_SIZE == 0); +} + +/********************************************************* +(Writes to the archive of each log group.) Currently, only the first +group is archived. */ +static +void +log_archive_groups(void) +/*====================*/ +{ + log_group_t* group; + + ut_ad(mutex_own(&(log_sys->mutex))); + + group = UT_LIST_GET_FIRST(log_sys->log_groups); + + log_group_archive(group); +} + +/********************************************************* +Completes the archiving write phase for (each log group), currently, +the first log group. */ +static +void +log_archive_write_complete_groups(void) +/*===================================*/ +{ + log_group_t* group; + ulint end_offset; + ulint trunc_files; + ulint n_files; + ib_uint64_t start_lsn; + ib_uint64_t end_lsn; + ulint i; + + ut_ad(mutex_own(&(log_sys->mutex))); + + group = UT_LIST_GET_FIRST(log_sys->log_groups); + + group->archived_file_no = group->next_archived_file_no; + group->archived_offset = group->next_archived_offset; + + /* Truncate from the archive file space all but the last + file, or if it has been written full, all files */ + + n_files = (UNIV_PAGE_SIZE + * fil_space_get_size(group->archive_space_id)) + / group->file_size; + ut_ad(n_files > 0); + + end_offset = group->archived_offset; + + if (end_offset % group->file_size == 0) { + + trunc_files = n_files; + } else { + trunc_files = n_files - 1; + } + +#ifdef UNIV_DEBUG + if (log_debug_writes && trunc_files) { + fprintf(stderr, + "Complete file(s) archived to group %lu\n", + (ulong) group->id); + } +#endif /* UNIV_DEBUG */ + + /* Calculate the archive file space start lsn */ + start_lsn = log_sys->next_archived_lsn + - (end_offset - LOG_FILE_HDR_SIZE + trunc_files + * (group->file_size - LOG_FILE_HDR_SIZE)); + end_lsn = start_lsn; + + for (i = 0; i < trunc_files; i++) { + + end_lsn += group->file_size - LOG_FILE_HDR_SIZE; + + /* Write a notice to the headers of archived log + files that the file write has been completed */ + + log_group_archive_completed_header_write(group, i, end_lsn); + } + + fil_space_truncate_start(group->archive_space_id, + trunc_files * group->file_size); + +#ifdef UNIV_DEBUG + if (log_debug_writes) { + fputs("Archiving writes completed\n", stderr); + } +#endif /* UNIV_DEBUG */ +} + +/********************************************************** +Completes an archiving i/o. */ +static +void +log_archive_check_completion_low(void) +/*==================================*/ +{ + ut_ad(mutex_own(&(log_sys->mutex))); + + if (log_sys->n_pending_archive_ios == 0 + && log_sys->archiving_phase == LOG_ARCHIVE_READ) { + +#ifdef UNIV_DEBUG + if (log_debug_writes) { + fputs("Archiving read completed\n", stderr); + } +#endif /* UNIV_DEBUG */ + + /* Archive buffer has now been read in: start archive writes */ + + log_sys->archiving_phase = LOG_ARCHIVE_WRITE; + + log_archive_groups(); + } + + if (log_sys->n_pending_archive_ios == 0 + && log_sys->archiving_phase == LOG_ARCHIVE_WRITE) { + + log_archive_write_complete_groups(); + + log_sys->archived_lsn = log_sys->next_archived_lsn; + + rw_lock_x_unlock_gen(&(log_sys->archive_lock), LOG_ARCHIVE); + } +} + +/********************************************************** +Completes an archiving i/o. */ +static +void +log_io_complete_archive(void) +/*=========================*/ +{ + log_group_t* group; + + mutex_enter(&(log_sys->mutex)); + + group = UT_LIST_GET_FIRST(log_sys->log_groups); + + mutex_exit(&(log_sys->mutex)); + + fil_flush(group->archive_space_id); + + mutex_enter(&(log_sys->mutex)); + + ut_ad(log_sys->n_pending_archive_ios > 0); + + log_sys->n_pending_archive_ios--; + + log_archive_check_completion_low(); + + mutex_exit(&(log_sys->mutex)); +} + +/************************************************************************ +Starts an archiving operation. */ +UNIV_INTERN +ibool +log_archive_do( +/*===========*/ + /* out: TRUE if succeed, FALSE if an archiving + operation was already running */ + ibool sync, /* in: TRUE if synchronous operation is desired */ + ulint* n_bytes)/* out: archive log buffer size, 0 if nothing to + archive */ +{ + ibool calc_new_limit; + ib_uint64_t start_lsn; + ib_uint64_t limit_lsn; + + calc_new_limit = TRUE; +loop: + mutex_enter(&(log_sys->mutex)); + + switch (log_sys->archiving_state) { + case LOG_ARCH_OFF: +arch_none: + mutex_exit(&(log_sys->mutex)); + + *n_bytes = 0; + + return(TRUE); + case LOG_ARCH_STOPPED: + case LOG_ARCH_STOPPING2: + mutex_exit(&(log_sys->mutex)); + + os_event_wait(log_sys->archiving_on); + + goto loop; + } + + start_lsn = log_sys->archived_lsn; + + if (calc_new_limit) { + ut_a(log_sys->archive_buf_size % OS_FILE_LOG_BLOCK_SIZE == 0); + limit_lsn = start_lsn + log_sys->archive_buf_size; + + *n_bytes = log_sys->archive_buf_size; + + if (limit_lsn >= log_sys->lsn) { + + limit_lsn = ut_uint64_align_down( + log_sys->lsn, OS_FILE_LOG_BLOCK_SIZE); + } + } + + if (log_sys->archived_lsn >= limit_lsn) { + + goto arch_none; + } + + if (log_sys->written_to_all_lsn < limit_lsn) { + + mutex_exit(&(log_sys->mutex)); + + log_write_up_to(limit_lsn, LOG_WAIT_ALL_GROUPS, TRUE); + + calc_new_limit = FALSE; + + goto loop; + } + + if (log_sys->n_pending_archive_ios > 0) { + /* An archiving operation is running */ + + mutex_exit(&(log_sys->mutex)); + + if (sync) { + rw_lock_s_lock(&(log_sys->archive_lock)); + rw_lock_s_unlock(&(log_sys->archive_lock)); + } + + *n_bytes = log_sys->archive_buf_size; + + return(FALSE); + } + + rw_lock_x_lock_gen(&(log_sys->archive_lock), LOG_ARCHIVE); + + log_sys->archiving_phase = LOG_ARCHIVE_READ; + + log_sys->next_archived_lsn = limit_lsn; + +#ifdef UNIV_DEBUG + if (log_debug_writes) { + fprintf(stderr, + "Archiving from lsn %llu to lsn %llu\n", + log_sys->archived_lsn, limit_lsn); + } +#endif /* UNIV_DEBUG */ + + /* Read the log segment to the archive buffer */ + + log_group_read_log_seg(LOG_ARCHIVE, log_sys->archive_buf, + UT_LIST_GET_FIRST(log_sys->log_groups), + start_lsn, limit_lsn); + + mutex_exit(&(log_sys->mutex)); + + if (sync) { + rw_lock_s_lock(&(log_sys->archive_lock)); + rw_lock_s_unlock(&(log_sys->archive_lock)); + } + + *n_bytes = log_sys->archive_buf_size; + + return(TRUE); +} + +/******************************************************************** +Writes the log contents to the archive at least up to the lsn when this +function was called. */ +static +void +log_archive_all(void) +/*=================*/ +{ + ib_uint64_t present_lsn; + ulint dummy; + + mutex_enter(&(log_sys->mutex)); + + if (log_sys->archiving_state == LOG_ARCH_OFF) { + mutex_exit(&(log_sys->mutex)); + + return; + } + + present_lsn = log_sys->lsn; + + mutex_exit(&(log_sys->mutex)); + + log_pad_current_log_block(); + + for (;;) { + mutex_enter(&(log_sys->mutex)); + + if (present_lsn <= log_sys->archived_lsn) { + + mutex_exit(&(log_sys->mutex)); + + return; + } + + mutex_exit(&(log_sys->mutex)); + + log_archive_do(TRUE, &dummy); + } +} + +/********************************************************* +Closes the possible open archive log file (for each group) the first group, +and if it was open, increments the group file count by 2, if desired. */ +static +void +log_archive_close_groups( +/*=====================*/ + ibool increment_file_count) /* in: TRUE if we want to increment + the file count */ +{ + log_group_t* group; + ulint trunc_len; + + ut_ad(mutex_own(&(log_sys->mutex))); + + if (log_sys->archiving_state == LOG_ARCH_OFF) { + + return; + } + + group = UT_LIST_GET_FIRST(log_sys->log_groups); + + trunc_len = UNIV_PAGE_SIZE + * fil_space_get_size(group->archive_space_id); + if (trunc_len > 0) { + ut_a(trunc_len == group->file_size); + + /* Write a notice to the headers of archived log + files that the file write has been completed */ + + log_group_archive_completed_header_write( + group, 0, log_sys->archived_lsn); + + fil_space_truncate_start(group->archive_space_id, + trunc_len); + if (increment_file_count) { + group->archived_offset = 0; + group->archived_file_no += 2; + } + +#ifdef UNIV_DEBUG + if (log_debug_writes) { + fprintf(stderr, + "Incrementing arch file no to %lu" + " in log group %lu\n", + (ulong) group->archived_file_no + 2, + (ulong) group->id); + } +#endif /* UNIV_DEBUG */ + } +} + +/******************************************************************** +Writes the log contents to the archive up to the lsn when this function was +called, and stops the archiving. When archiving is started again, the archived +log file numbers start from 2 higher, so that the archiving will not write +again to the archived log files which exist when this function returns. */ +UNIV_INTERN +ulint +log_archive_stop(void) +/*==================*/ + /* out: DB_SUCCESS or DB_ERROR */ +{ + ibool success; + + mutex_enter(&(log_sys->mutex)); + + if (log_sys->archiving_state != LOG_ARCH_ON) { + + mutex_exit(&(log_sys->mutex)); + + return(DB_ERROR); + } + + log_sys->archiving_state = LOG_ARCH_STOPPING; + + mutex_exit(&(log_sys->mutex)); + + log_archive_all(); + + mutex_enter(&(log_sys->mutex)); + + log_sys->archiving_state = LOG_ARCH_STOPPING2; + os_event_reset(log_sys->archiving_on); + + mutex_exit(&(log_sys->mutex)); + + /* Wait for a possible archiving operation to end */ + + rw_lock_s_lock(&(log_sys->archive_lock)); + rw_lock_s_unlock(&(log_sys->archive_lock)); + + mutex_enter(&(log_sys->mutex)); + + /* Close all archived log files, incrementing the file count by 2, + if appropriate */ + + log_archive_close_groups(TRUE); + + mutex_exit(&(log_sys->mutex)); + + /* Make a checkpoint, so that if recovery is needed, the file numbers + of new archived log files will start from the right value */ + + success = FALSE; + + while (!success) { + success = log_checkpoint(TRUE, TRUE); + } + + mutex_enter(&(log_sys->mutex)); + + log_sys->archiving_state = LOG_ARCH_STOPPED; + + mutex_exit(&(log_sys->mutex)); + + return(DB_SUCCESS); +} + +/******************************************************************** +Starts again archiving which has been stopped. */ +UNIV_INTERN +ulint +log_archive_start(void) +/*===================*/ + /* out: DB_SUCCESS or DB_ERROR */ +{ + mutex_enter(&(log_sys->mutex)); + + if (log_sys->archiving_state != LOG_ARCH_STOPPED) { + + mutex_exit(&(log_sys->mutex)); + + return(DB_ERROR); + } + + log_sys->archiving_state = LOG_ARCH_ON; + + os_event_set(log_sys->archiving_on); + + mutex_exit(&(log_sys->mutex)); + + return(DB_SUCCESS); +} + +/******************************************************************** +Stop archiving the log so that a gap may occur in the archived log files. */ +UNIV_INTERN +ulint +log_archive_noarchivelog(void) +/*==========================*/ + /* out: DB_SUCCESS or DB_ERROR */ +{ +loop: + mutex_enter(&(log_sys->mutex)); + + if (log_sys->archiving_state == LOG_ARCH_STOPPED + || log_sys->archiving_state == LOG_ARCH_OFF) { + + log_sys->archiving_state = LOG_ARCH_OFF; + + os_event_set(log_sys->archiving_on); + + mutex_exit(&(log_sys->mutex)); + + return(DB_SUCCESS); + } + + mutex_exit(&(log_sys->mutex)); + + log_archive_stop(); + + os_thread_sleep(500000); + + goto loop; +} + +/******************************************************************** +Start archiving the log so that a gap may occur in the archived log files. */ +UNIV_INTERN +ulint +log_archive_archivelog(void) +/*========================*/ + /* out: DB_SUCCESS or DB_ERROR */ +{ + mutex_enter(&(log_sys->mutex)); + + if (log_sys->archiving_state == LOG_ARCH_OFF) { + + log_sys->archiving_state = LOG_ARCH_ON; + + log_sys->archived_lsn + = ut_uint64_align_down(log_sys->lsn, + OS_FILE_LOG_BLOCK_SIZE); + mutex_exit(&(log_sys->mutex)); + + return(DB_SUCCESS); + } + + mutex_exit(&(log_sys->mutex)); + + return(DB_ERROR); +} + +/******************************************************************** +Tries to establish a big enough margin of free space in the log groups, such +that a new log entry can be catenated without an immediate need for +archiving. */ +static +void +log_archive_margin(void) +/*====================*/ +{ + log_t* log = log_sys; + ulint age; + ibool sync; + ulint dummy; +loop: + mutex_enter(&(log->mutex)); + + if (log->archiving_state == LOG_ARCH_OFF) { + mutex_exit(&(log->mutex)); + + return; + } + + age = log->lsn - log->archived_lsn; + + if (age > log->max_archived_lsn_age) { + + /* An archiving is urgent: we have to do synchronous i/o */ + + sync = TRUE; + + } else if (age > log->max_archived_lsn_age_async) { + + /* An archiving is not urgent: we do asynchronous i/o */ + + sync = FALSE; + } else { + /* No archiving required yet */ + + mutex_exit(&(log->mutex)); + + return; + } + + mutex_exit(&(log->mutex)); + + log_archive_do(sync, &dummy); + + if (sync == TRUE) { + /* Check again that enough was written to the archive */ + + goto loop; + } +} +#endif /* UNIV_LOG_ARCHIVE */ + +/************************************************************************ +Checks that there is enough free space in the log to start a new query step. +Flushes the log buffer or makes a new checkpoint if necessary. NOTE: this +function may only be called if the calling thread owns no synchronization +objects! */ +UNIV_INTERN +void +log_check_margins(void) +/*===================*/ +{ +loop: + log_flush_margin(); + + log_checkpoint_margin(); + +#ifdef UNIV_LOG_ARCHIVE + log_archive_margin(); +#endif /* UNIV_LOG_ARCHIVE */ + + mutex_enter(&(log_sys->mutex)); + + if (log_sys->check_flush_or_checkpoint) { + + mutex_exit(&(log_sys->mutex)); + + goto loop; + } + + mutex_exit(&(log_sys->mutex)); +} + +/******************************************************************** +Makes a checkpoint at the latest lsn and writes it to first page of each +data file in the database, so that we know that the file spaces contain +all modifications up to that lsn. This can only be called at database +shutdown. This function also writes all log in log files to the log archive. */ +UNIV_INTERN +void +logs_empty_and_mark_files_at_shutdown(void) +/*=======================================*/ +{ + ib_uint64_t lsn; + ulint arch_log_no; + + if (srv_print_verbose_log) { + ut_print_timestamp(stderr); + fprintf(stderr, " InnoDB: Starting shutdown...\n"); + } + /* Wait until the master thread and all other operations are idle: our + algorithm only works if the server is idle at shutdown */ + + srv_shutdown_state = SRV_SHUTDOWN_CLEANUP; +loop: + os_thread_sleep(100000); + + mutex_enter(&kernel_mutex); + + /* We need the monitor threads to stop before we proceed with a + normal shutdown. In case of very fast shutdown, however, we can + proceed without waiting for monitor threads. */ + + if (srv_fast_shutdown < 2 + && (srv_error_monitor_active + || srv_lock_timeout_and_monitor_active)) { + + mutex_exit(&kernel_mutex); + + goto loop; + } + + /* Check that there are no longer transactions. We need this wait even + for the 'very fast' shutdown, because the InnoDB layer may have + committed or prepared transactions and we don't want to lose them. */ + + if (trx_n_mysql_transactions > 0 + || UT_LIST_GET_LEN(trx_sys->trx_list) > 0) { + + mutex_exit(&kernel_mutex); + + goto loop; + } + + if (srv_fast_shutdown == 2) { + /* In this fastest shutdown we do not flush the buffer pool: + it is essentially a 'crash' of the InnoDB server. Make sure + that the log is all flushed to disk, so that we can recover + all committed transactions in a crash recovery. We must not + write the lsn stamps to the data files, since at a startup + InnoDB deduces from the stamps if the previous shutdown was + clean. */ + + log_buffer_flush_to_disk(); + + return; /* We SKIP ALL THE REST !! */ + } + + /* Check that the master thread is suspended */ + + if (srv_n_threads_active[SRV_MASTER] != 0) { + + mutex_exit(&kernel_mutex); + + goto loop; + } + + mutex_exit(&kernel_mutex); + + mutex_enter(&(log_sys->mutex)); + + if (log_sys->n_pending_checkpoint_writes +#ifdef UNIV_LOG_ARCHIVE + || log_sys->n_pending_archive_ios +#endif /* UNIV_LOG_ARCHIVE */ + || log_sys->n_pending_writes) { + + mutex_exit(&(log_sys->mutex)); + + goto loop; + } + + mutex_exit(&(log_sys->mutex)); + + if (!buf_pool_check_no_pending_io()) { + + goto loop; + } + +#ifdef UNIV_LOG_ARCHIVE + log_archive_all(); +#endif /* UNIV_LOG_ARCHIVE */ + + log_make_checkpoint_at(IB_ULONGLONG_MAX, TRUE); + + mutex_enter(&(log_sys->mutex)); + + lsn = log_sys->lsn; + + if (lsn != log_sys->last_checkpoint_lsn +#ifdef UNIV_LOG_ARCHIVE + || (srv_log_archive_on + && lsn != log_sys->archived_lsn + LOG_BLOCK_HDR_SIZE) +#endif /* UNIV_LOG_ARCHIVE */ + ) { + + mutex_exit(&(log_sys->mutex)); + + goto loop; + } + + arch_log_no = 0; + +#ifdef UNIV_LOG_ARCHIVE + UT_LIST_GET_FIRST(log_sys->log_groups)->archived_file_no; + + if (0 == UT_LIST_GET_FIRST(log_sys->log_groups)->archived_offset) { + + arch_log_no--; + } + + log_archive_close_groups(TRUE); +#endif /* UNIV_LOG_ARCHIVE */ + + mutex_exit(&(log_sys->mutex)); + + mutex_enter(&kernel_mutex); + /* Check that the master thread has stayed suspended */ + if (srv_n_threads_active[SRV_MASTER] != 0) { + fprintf(stderr, + "InnoDB: Warning: the master thread woke up" + " during shutdown\n"); + + mutex_exit(&kernel_mutex); + + goto loop; + } + mutex_exit(&kernel_mutex); + + fil_flush_file_spaces(FIL_TABLESPACE); + fil_flush_file_spaces(FIL_LOG); + + /* The call fil_write_flushed_lsn_to_data_files() will pass the buffer + pool: therefore it is essential that the buffer pool has been + completely flushed to disk! (We do not call fil_write... if the + 'very fast' shutdown is enabled.) */ + + if (!buf_all_freed()) { + + goto loop; + } + + srv_shutdown_state = SRV_SHUTDOWN_LAST_PHASE; + + /* Make some checks that the server really is quiet */ + ut_a(srv_n_threads_active[SRV_MASTER] == 0); + ut_a(buf_all_freed()); + ut_a(lsn == log_sys->lsn); + + if (lsn < srv_start_lsn) { + fprintf(stderr, + "InnoDB: Error: log sequence number" + " at shutdown %llu\n" + "InnoDB: is lower than at startup %llu!\n", + lsn, srv_start_lsn); + } + + srv_shutdown_lsn = lsn; + + fil_write_flushed_lsn_to_data_files(lsn, arch_log_no); + + fil_flush_file_spaces(FIL_TABLESPACE); + + fil_close_all_files(); + + /* Make some checks that the server really is quiet */ + ut_a(srv_n_threads_active[SRV_MASTER] == 0); + ut_a(buf_all_freed()); + ut_a(lsn == log_sys->lsn); +} + +/********************************************************** +Checks by parsing that the catenated log segment for a single mtr is +consistent. */ +UNIV_INTERN +ibool +log_check_log_recs( +/*===============*/ + byte* buf, /* in: pointer to the start of + the log segment in the + log_sys->buf log buffer */ + ulint len, /* in: segment length in bytes */ + ib_uint64_t buf_start_lsn) /* in: buffer start lsn */ +{ + ib_uint64_t contiguous_lsn; + ib_uint64_t scanned_lsn; + byte* start; + byte* end; + byte* buf1; + byte* scan_buf; + + ut_ad(mutex_own(&(log_sys->mutex))); + + if (len == 0) { + + return(TRUE); + } + + start = ut_align_down(buf, OS_FILE_LOG_BLOCK_SIZE); + end = ut_align(buf + len, OS_FILE_LOG_BLOCK_SIZE); + + buf1 = mem_alloc((end - start) + OS_FILE_LOG_BLOCK_SIZE); + scan_buf = ut_align(buf1, OS_FILE_LOG_BLOCK_SIZE); + + ut_memcpy(scan_buf, start, end - start); + + recv_scan_log_recs(TRUE, + (buf_pool->curr_size + - recv_n_pool_free_frames) * UNIV_PAGE_SIZE, + FALSE, scan_buf, end - start, + ut_uint64_align_down(buf_start_lsn, + OS_FILE_LOG_BLOCK_SIZE), + &contiguous_lsn, &scanned_lsn); + + ut_a(scanned_lsn == buf_start_lsn + len); + ut_a(recv_sys->recovered_lsn == scanned_lsn); + + mem_free(buf1); + + return(TRUE); +} + +/********************************************************** +Peeks the current lsn. */ +UNIV_INTERN +ibool +log_peek_lsn( +/*=========*/ + /* out: TRUE if success, FALSE if + could not get the log system mutex */ + ib_uint64_t* lsn) /* out: if returns TRUE, current lsn is here */ +{ + if (0 == mutex_enter_nowait(&(log_sys->mutex))) { + *lsn = log_sys->lsn; + + mutex_exit(&(log_sys->mutex)); + + return(TRUE); + } + + return(FALSE); +} + +/********************************************************** +Prints info of the log. */ +UNIV_INTERN +void +log_print( +/*======*/ + FILE* file) /* in: file where to print */ +{ + double time_elapsed; + time_t current_time; + + mutex_enter(&(log_sys->mutex)); + + fprintf(file, + "Log sequence number %llu\n" + "Log flushed up to %llu\n" + "Last checkpoint at %llu\n", + log_sys->lsn, + log_sys->flushed_to_disk_lsn, + log_sys->last_checkpoint_lsn); + + fprintf(file, + "Max checkpoint age %lu\n" + "Modified age %lu\n" + "Checkpoint age %lu\n", + (ulong) log_sys->max_checkpoint_age, + (ulong) (log_sys->lsn - + log_buf_pool_get_oldest_modification()), + (ulong) (log_sys->lsn - log_sys->last_checkpoint_lsn)); + + current_time = time(NULL); + + time_elapsed = 0.001 + difftime(current_time, + log_sys->last_printout_time); + fprintf(file, + "%lu pending log writes, %lu pending chkp writes\n" + "%lu log i/o's done, %.2f log i/o's/second\n", + (ulong) log_sys->n_pending_writes, + (ulong) log_sys->n_pending_checkpoint_writes, + (ulong) log_sys->n_log_ios, + ((log_sys->n_log_ios - log_sys->n_log_ios_old) + / time_elapsed)); + + log_sys->n_log_ios_old = log_sys->n_log_ios; + log_sys->last_printout_time = current_time; + + mutex_exit(&(log_sys->mutex)); +} + +/************************************************************************** +Refreshes the statistics used to print per-second averages. */ +UNIV_INTERN +void +log_refresh_stats(void) +/*===================*/ +{ + log_sys->n_log_ios_old = log_sys->n_log_ios; + log_sys->last_printout_time = time(NULL); +} === added file 'storage/xtradb/log/log0recv.c' --- a/storage/xtradb/log/log0recv.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/log/log0recv.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,3476 @@ +/***************************************************************************** + +Copyright (c) 1997, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Recovery + +Created 9/20/1997 Heikki Tuuri +*******************************************************/ + +#include "log0recv.h" + +#ifdef UNIV_NONINL +#include "log0recv.ic" +#endif + +#include "mem0mem.h" +#include "buf0buf.h" +#include "buf0flu.h" +#include "buf0rea.h" +#include "srv0srv.h" +#include "srv0start.h" +#include "mtr0log.h" +#include "page0cur.h" +#include "page0zip.h" +#include "btr0cur.h" +#include "ibuf0ibuf.h" +#include "trx0undo.h" +#include "trx0rec.h" +#include "trx0roll.h" +#include "row0merge.h" + +#ifdef UNIV_HOTBACKUP +/* This is set to FALSE if the backup was originally taken with the +ibbackup --include regexp option: then we do not want to create tables in +directories which were not included */ +UNIV_INTERN ibool recv_replay_file_ops = TRUE; +#endif /* UNIV_HOTBACKUP */ + +/* Log records are stored in the hash table in chunks at most of this size; +this must be less than UNIV_PAGE_SIZE as it is stored in the buffer pool */ +#define RECV_DATA_BLOCK_SIZE (MEM_MAX_ALLOC_IN_BUF - sizeof(recv_data_t)) + +/* Read-ahead area in applying log records to file pages */ +#define RECV_READ_AHEAD_AREA 32 + +UNIV_INTERN recv_sys_t* recv_sys = NULL; +UNIV_INTERN ibool recv_recovery_on = FALSE; +UNIV_INTERN ibool recv_recovery_from_backup_on = FALSE; + +UNIV_INTERN ibool recv_needed_recovery = FALSE; + +UNIV_INTERN ibool recv_lsn_checks_on = FALSE; + +/* There are two conditions under which we scan the logs, the first +is normal startup and the second is when we do a recovery from an +archive. +This flag is set if we are doing a scan from the last checkpoint during +startup. If we find log entries that were written after the last checkpoint +we know that the server was not cleanly shutdown. We must then initialize +the crash recovery environment before attempting to store these entries in +the log hash table. */ +UNIV_INTERN ibool recv_log_scan_is_startup_type = FALSE; + +/* If the following is TRUE, the buffer pool file pages must be invalidated +after recovery and no ibuf operations are allowed; this becomes TRUE if +the log record hash table becomes too full, and log records must be merged +to file pages already before the recovery is finished: in this case no +ibuf operations are allowed, as they could modify the pages read in the +buffer pool before the pages have been recovered to the up-to-date state */ + +/* Recovery is running and no operations on the log files are allowed +yet: the variable name is misleading */ + +UNIV_INTERN ibool recv_no_ibuf_operations = FALSE; + +/* The following counter is used to decide when to print info on +log scan */ +UNIV_INTERN ulint recv_scan_print_counter = 0; + +UNIV_INTERN ibool recv_is_from_backup = FALSE; +#ifdef UNIV_HOTBACKUP +UNIV_INTERN ibool recv_is_making_a_backup = FALSE; +#else +# define recv_is_making_a_backup FALSE +#endif /* UNIV_HOTBACKUP */ + +UNIV_INTERN ulint recv_previous_parsed_rec_type = 999999; +UNIV_INTERN ulint recv_previous_parsed_rec_offset = 0; +UNIV_INTERN ulint recv_previous_parsed_rec_is_multi = 0; + +UNIV_INTERN ulint recv_max_parsed_page_no = 0; + +/* This many frames must be left free in the buffer pool when we scan +the log and store the scanned log records in the buffer pool: we will +use these free frames to read in pages when we start applying the +log records to the database. */ + +UNIV_INTERN ulint recv_n_pool_free_frames = 256; + +/* The maximum lsn we see for a page during the recovery process. If this +is bigger than the lsn we are able to scan up to, that is an indication that +the recovery failed and the database may be corrupt. */ + +UNIV_INTERN ib_uint64_t recv_max_page_lsn; + +/* prototypes */ + +/*********************************************************** +Initialize crash recovery environment. Can be called iff +recv_needed_recovery == FALSE. */ +static +void +recv_init_crash_recovery(void); +/*===========================*/ + +/************************************************************ +Creates the recovery system. */ +UNIV_INTERN +void +recv_sys_create(void) +/*=================*/ +{ + if (recv_sys != NULL) { + + return; + } + + recv_sys = mem_alloc(sizeof(recv_sys_t)); + + mutex_create(&recv_sys->mutex, SYNC_RECV); + + recv_sys->heap = NULL; + recv_sys->addr_hash = NULL; +} + +/************************************************************ +Inits the recovery system for a recovery operation. */ +UNIV_INTERN +void +recv_sys_init( +/*==========*/ + ibool recover_from_backup, /* in: TRUE if this is called + to recover from a hot backup */ + ulint available_memory) /* in: available memory in bytes */ +{ + if (recv_sys->heap != NULL) { + + return; + } + + mutex_enter(&(recv_sys->mutex)); + + if (!recover_from_backup) { + recv_sys->heap = mem_heap_create_in_buffer(256); + } else { + recv_sys->heap = mem_heap_create(256); + recv_is_from_backup = TRUE; + } + + recv_sys->buf = ut_malloc(RECV_PARSING_BUF_SIZE); + recv_sys->len = 0; + recv_sys->recovered_offset = 0; + + recv_sys->addr_hash = hash_create(available_memory / 64); + recv_sys->n_addrs = 0; + + recv_sys->apply_log_recs = FALSE; + recv_sys->apply_batch_on = FALSE; + + recv_sys->last_block_buf_start = mem_alloc(2 * OS_FILE_LOG_BLOCK_SIZE); + + recv_sys->last_block = ut_align(recv_sys->last_block_buf_start, + OS_FILE_LOG_BLOCK_SIZE); + recv_sys->found_corrupt_log = FALSE; + + recv_max_page_lsn = 0; + + mutex_exit(&(recv_sys->mutex)); +} + +/************************************************************ +Empties the hash table when it has been fully processed. */ +static +void +recv_sys_empty_hash(void) +/*=====================*/ +{ + ut_ad(mutex_own(&(recv_sys->mutex))); + + if (recv_sys->n_addrs != 0) { + fprintf(stderr, + "InnoDB: Error: %lu pages with log records" + " were left unprocessed!\n" + "InnoDB: Maximum page number with" + " log records on it %lu\n", + (ulong) recv_sys->n_addrs, + (ulong) recv_max_parsed_page_no); + ut_error; + } + + hash_table_free(recv_sys->addr_hash); + mem_heap_empty(recv_sys->heap); + + recv_sys->addr_hash = hash_create(buf_pool_get_curr_size() / 256); +} + +#ifndef UNIV_LOG_DEBUG +/************************************************************ +Frees the recovery system. */ +static +void +recv_sys_free(void) +/*===============*/ +{ + mutex_enter(&(recv_sys->mutex)); + + hash_table_free(recv_sys->addr_hash); + mem_heap_free(recv_sys->heap); + ut_free(recv_sys->buf); + mem_free(recv_sys->last_block_buf_start); + + recv_sys->addr_hash = NULL; + recv_sys->heap = NULL; + + mutex_exit(&(recv_sys->mutex)); +} +#endif /* UNIV_LOG_DEBUG */ + +/************************************************************ +Truncates possible corrupted or extra records from a log group. */ +static +void +recv_truncate_group( +/*================*/ + log_group_t* group, /* in: log group */ + ib_uint64_t recovered_lsn, /* in: recovery succeeded up to this + lsn */ + ib_uint64_t limit_lsn, /* in: this was the limit for + recovery */ + ib_uint64_t checkpoint_lsn, /* in: recovery was started from this + checkpoint */ + ib_uint64_t archived_lsn) /* in: the log has been archived up to + this lsn */ +{ + ib_uint64_t start_lsn; + ib_uint64_t end_lsn; + ib_uint64_t finish_lsn1; + ib_uint64_t finish_lsn2; + ib_uint64_t finish_lsn; + ulint len; + ulint i; + + if (archived_lsn == IB_ULONGLONG_MAX) { + /* Checkpoint was taken in the NOARCHIVELOG mode */ + archived_lsn = checkpoint_lsn; + } + + finish_lsn1 = ut_uint64_align_down(archived_lsn, + OS_FILE_LOG_BLOCK_SIZE) + + log_group_get_capacity(group); + + finish_lsn2 = ut_uint64_align_up(recovered_lsn, + OS_FILE_LOG_BLOCK_SIZE) + + recv_sys->last_log_buf_size; + + if (limit_lsn != IB_ULONGLONG_MAX) { + /* We do not know how far we should erase log records: erase + as much as possible */ + + finish_lsn = finish_lsn1; + } else { + /* It is enough to erase the length of the log buffer */ + finish_lsn = finish_lsn1 < finish_lsn2 + ? finish_lsn1 : finish_lsn2; + } + + ut_a(RECV_SCAN_SIZE <= log_sys->buf_size); + + /* Write the log buffer full of zeros */ + for (i = 0; i < RECV_SCAN_SIZE; i++) { + + *(log_sys->buf + i) = '\0'; + } + + start_lsn = ut_uint64_align_down(recovered_lsn, + OS_FILE_LOG_BLOCK_SIZE); + + if (start_lsn != recovered_lsn) { + /* Copy the last incomplete log block to the log buffer and + edit its data length: */ + + ut_memcpy(log_sys->buf, recv_sys->last_block, + OS_FILE_LOG_BLOCK_SIZE); + log_block_set_data_len(log_sys->buf, + (ulint) (recovered_lsn - start_lsn)); + } + + if (start_lsn >= finish_lsn) { + + return; + } + + for (;;) { + end_lsn = start_lsn + RECV_SCAN_SIZE; + + if (end_lsn > finish_lsn) { + + end_lsn = finish_lsn; + } + + len = (ulint) (end_lsn - start_lsn); + + log_group_write_buf(group, log_sys->buf, len, start_lsn, 0); + if (end_lsn >= finish_lsn) { + + return; + } + + /* Write the log buffer full of zeros */ + for (i = 0; i < RECV_SCAN_SIZE; i++) { + + *(log_sys->buf + i) = '\0'; + } + + start_lsn = end_lsn; + } +} + +/************************************************************ +Copies the log segment between group->recovered_lsn and recovered_lsn from the +most up-to-date log group to group, so that it contains the latest log data. */ +static +void +recv_copy_group( +/*============*/ + log_group_t* up_to_date_group, /* in: the most up-to-date log + group */ + log_group_t* group, /* in: copy to this log + group */ + ib_uint64_t recovered_lsn) /* in: recovery succeeded up + to this lsn */ +{ + ib_uint64_t start_lsn; + ib_uint64_t end_lsn; + ulint len; + + if (group->scanned_lsn >= recovered_lsn) { + + return; + } + + ut_a(RECV_SCAN_SIZE <= log_sys->buf_size); + + start_lsn = ut_uint64_align_down(group->scanned_lsn, + OS_FILE_LOG_BLOCK_SIZE); + for (;;) { + end_lsn = start_lsn + RECV_SCAN_SIZE; + + if (end_lsn > recovered_lsn) { + end_lsn = ut_uint64_align_up(recovered_lsn, + OS_FILE_LOG_BLOCK_SIZE); + } + + log_group_read_log_seg(LOG_RECOVER, log_sys->buf, + up_to_date_group, start_lsn, end_lsn); + + len = (ulint) (end_lsn - start_lsn); + + log_group_write_buf(group, log_sys->buf, len, start_lsn, 0); + + if (end_lsn >= recovered_lsn) { + + return; + } + + start_lsn = end_lsn; + } +} + +/************************************************************ +Copies a log segment from the most up-to-date log group to the other log +groups, so that they all contain the latest log data. Also writes the info +about the latest checkpoint to the groups, and inits the fields in the group +memory structs to up-to-date values. */ +static +void +recv_synchronize_groups( +/*====================*/ + log_group_t* up_to_date_group) /* in: the most up-to-date + log group */ +{ + log_group_t* group; + ib_uint64_t start_lsn; + ib_uint64_t end_lsn; + ib_uint64_t recovered_lsn; + ib_uint64_t limit_lsn; + + recovered_lsn = recv_sys->recovered_lsn; + limit_lsn = recv_sys->limit_lsn; + + /* Read the last recovered log block to the recovery system buffer: + the block is always incomplete */ + + start_lsn = ut_uint64_align_down(recovered_lsn, + OS_FILE_LOG_BLOCK_SIZE); + end_lsn = ut_uint64_align_up(recovered_lsn, OS_FILE_LOG_BLOCK_SIZE); + + ut_a(start_lsn != end_lsn); + + log_group_read_log_seg(LOG_RECOVER, recv_sys->last_block, + up_to_date_group, start_lsn, end_lsn); + + group = UT_LIST_GET_FIRST(log_sys->log_groups); + + while (group) { + if (group != up_to_date_group) { + + /* Copy log data if needed */ + + recv_copy_group(group, up_to_date_group, + recovered_lsn); + } + + /* Update the fields in the group struct to correspond to + recovered_lsn */ + + log_group_set_fields(group, recovered_lsn); + + group = UT_LIST_GET_NEXT(log_groups, group); + } + + /* Copy the checkpoint info to the groups; remember that we have + incremented checkpoint_no by one, and the info will not be written + over the max checkpoint info, thus making the preservation of max + checkpoint info on disk certain */ + + log_groups_write_checkpoint_info(); + + mutex_exit(&(log_sys->mutex)); + + /* Wait for the checkpoint write to complete */ + rw_lock_s_lock(&(log_sys->checkpoint_lock)); + rw_lock_s_unlock(&(log_sys->checkpoint_lock)); + + mutex_enter(&(log_sys->mutex)); +} + +/*************************************************************************** +Checks the consistency of the checkpoint info */ +static +ibool +recv_check_cp_is_consistent( +/*========================*/ + /* out: TRUE if ok */ + byte* buf) /* in: buffer containing checkpoint info */ +{ + ulint fold; + + fold = ut_fold_binary(buf, LOG_CHECKPOINT_CHECKSUM_1); + + if ((fold & 0xFFFFFFFFUL) != mach_read_from_4( + buf + LOG_CHECKPOINT_CHECKSUM_1)) { + return(FALSE); + } + + fold = ut_fold_binary(buf + LOG_CHECKPOINT_LSN, + LOG_CHECKPOINT_CHECKSUM_2 - LOG_CHECKPOINT_LSN); + + if ((fold & 0xFFFFFFFFUL) != mach_read_from_4( + buf + LOG_CHECKPOINT_CHECKSUM_2)) { + return(FALSE); + } + + return(TRUE); +} + +/************************************************************ +Looks for the maximum consistent checkpoint from the log groups. */ +static +ulint +recv_find_max_checkpoint( +/*=====================*/ + /* out: error code or DB_SUCCESS */ + log_group_t** max_group, /* out: max group */ + ulint* max_field) /* out: LOG_CHECKPOINT_1 or + LOG_CHECKPOINT_2 */ +{ + log_group_t* group; + ib_uint64_t max_no; + ib_uint64_t checkpoint_no; + ulint field; + byte* buf; + + group = UT_LIST_GET_FIRST(log_sys->log_groups); + + max_no = 0; + *max_group = NULL; + *max_field = 0; + + buf = log_sys->checkpoint_buf; + + while (group) { + group->state = LOG_GROUP_CORRUPTED; + + for (field = LOG_CHECKPOINT_1; field <= LOG_CHECKPOINT_2; + field += LOG_CHECKPOINT_2 - LOG_CHECKPOINT_1) { + + log_group_read_checkpoint_info(group, field); + + if (!recv_check_cp_is_consistent(buf)) { +#ifdef UNIV_DEBUG + if (log_debug_writes) { + fprintf(stderr, + "InnoDB: Checkpoint in group" + " %lu at %lu invalid, %lu\n", + (ulong) group->id, + (ulong) field, + (ulong) mach_read_from_4( + buf + + LOG_CHECKPOINT_CHECKSUM_1)); + + } +#endif /* UNIV_DEBUG */ + goto not_consistent; + } + + group->state = LOG_GROUP_OK; + + group->lsn = mach_read_ull( + buf + LOG_CHECKPOINT_LSN); + group->lsn_offset = mach_read_from_4( + buf + LOG_CHECKPOINT_OFFSET); + checkpoint_no = mach_read_ull( + buf + LOG_CHECKPOINT_NO); + +#ifdef UNIV_DEBUG + if (log_debug_writes) { + fprintf(stderr, + "InnoDB: Checkpoint number %lu" + " found in group %lu\n", + (ulong) checkpoint_no, + (ulong) group->id); + } +#endif /* UNIV_DEBUG */ + + if (checkpoint_no >= max_no) { + *max_group = group; + *max_field = field; + max_no = checkpoint_no; + } + +not_consistent: + ; + } + + group = UT_LIST_GET_NEXT(log_groups, group); + } + + if (*max_group == NULL) { + + fprintf(stderr, + "InnoDB: No valid checkpoint found.\n" + "InnoDB: If this error appears when you are" + " creating an InnoDB database,\n" + "InnoDB: the problem may be that during" + " an earlier attempt you managed\n" + "InnoDB: to create the InnoDB data files," + " but log file creation failed.\n" + "InnoDB: If that is the case, please refer to\n" + "InnoDB: http://dev.mysql.com/doc/refman/5.1/en/" + "error-creating-innodb.html\n"); + return(DB_ERROR); + } + + return(DB_SUCCESS); +} + +#ifdef UNIV_HOTBACKUP +/*********************************************************************** +Reads the checkpoint info needed in hot backup. */ +UNIV_INTERN +ibool +recv_read_cp_info_for_backup( +/*=========================*/ + /* out: TRUE if success */ + byte* hdr, /* in: buffer containing the log group + header */ + ib_uint64_t* lsn, /* out: checkpoint lsn */ + ulint* offset, /* out: checkpoint offset in the log group */ + ulint* fsp_limit,/* out: fsp limit of space 0, + 1000000000 if the database is running + with < version 3.23.50 of InnoDB */ + ib_uint64_t* cp_no, /* out: checkpoint number */ + ib_uint64_t* first_header_lsn) + /* out: lsn of of the start of the + first log file */ +{ + ulint max_cp = 0; + ib_uint64_t max_cp_no = 0; + byte* cp_buf; + + cp_buf = hdr + LOG_CHECKPOINT_1; + + if (recv_check_cp_is_consistent(cp_buf)) { + max_cp_no = mach_read_ull(cp_buf + LOG_CHECKPOINT_NO); + max_cp = LOG_CHECKPOINT_1; + } + + cp_buf = hdr + LOG_CHECKPOINT_2; + + if (recv_check_cp_is_consistent(cp_buf)) { + if (mach_read_ull(cp_buf + LOG_CHECKPOINT_NO) > max_cp_no) { + max_cp = LOG_CHECKPOINT_2; + } + } + + if (max_cp == 0) { + return(FALSE); + } + + cp_buf = hdr + max_cp; + + *lsn = mach_read_ull(cp_buf + LOG_CHECKPOINT_LSN); + *offset = mach_read_from_4(cp_buf + LOG_CHECKPOINT_OFFSET); + + /* If the user is running a pre-3.23.50 version of InnoDB, its + checkpoint data does not contain the fsp limit info */ + if (mach_read_from_4(cp_buf + LOG_CHECKPOINT_FSP_MAGIC_N) + == LOG_CHECKPOINT_FSP_MAGIC_N_VAL) { + + *fsp_limit = mach_read_from_4( + cp_buf + LOG_CHECKPOINT_FSP_FREE_LIMIT); + + if (*fsp_limit == 0) { + *fsp_limit = 1000000000; + } + } else { + *fsp_limit = 1000000000; + } + + /* fprintf(stderr, "fsp limit %lu MB\n", *fsp_limit); */ + + *cp_no = mach_read_ull(cp_buf + LOG_CHECKPOINT_NO); + + *first_header_lsn = mach_read_ull(hdr + LOG_FILE_START_LSN); + + return(TRUE); +} +#endif /* UNIV_HOTBACKUP */ + +/********************************************************** +Checks the 4-byte checksum to the trailer checksum field of a log block. +We also accept a log block in the old format < InnoDB-3.23.52 where the +checksum field contains the log block number. */ +static +ibool +log_block_checksum_is_ok_or_old_format( +/*===================================*/ + /* out: TRUE if ok, or if the log block may be in the + format of InnoDB version < 3.23.52 */ + byte* block) /* in: pointer to a log block */ +{ +#ifdef UNIV_LOG_DEBUG + return(TRUE); +#endif /* UNIV_LOG_DEBUG */ + if (log_block_calc_checksum(block) == log_block_get_checksum(block)) { + + return(TRUE); + } + + if (log_block_get_hdr_no(block) == log_block_get_checksum(block)) { + + /* We assume the log block is in the format of + InnoDB version < 3.23.52 and the block is ok */ +#if 0 + fprintf(stderr, + "InnoDB: Scanned old format < InnoDB-3.23.52" + " log block number %lu\n", + log_block_get_hdr_no(block)); +#endif + return(TRUE); + } + + return(FALSE); +} + +#ifdef UNIV_HOTBACKUP +/*********************************************************************** +Scans the log segment and n_bytes_scanned is set to the length of valid +log scanned. */ +UNIV_INTERN +void +recv_scan_log_seg_for_backup( +/*=========================*/ + byte* buf, /* in: buffer containing log data */ + ulint buf_len, /* in: data length in that buffer */ + ib_uint64_t* scanned_lsn, /* in/out: lsn of buffer start, + we return scanned lsn */ + ulint* scanned_checkpoint_no, + /* in/out: 4 lowest bytes of the + highest scanned checkpoint number so + far */ + ulint* n_bytes_scanned)/* out: how much we were able to + scan, smaller than buf_len if log + data ended here */ +{ + ulint data_len; + byte* log_block; + ulint no; + + *n_bytes_scanned = 0; + + for (log_block = buf; log_block < buf + buf_len; + log_block += OS_FILE_LOG_BLOCK_SIZE) { + + no = log_block_get_hdr_no(log_block); + +#if 0 + fprintf(stderr, "Log block header no %lu\n", no); +#endif + + if (no != log_block_convert_lsn_to_no(*scanned_lsn) + || !log_block_checksum_is_ok_or_old_format(log_block)) { +#if 0 + fprintf(stderr, + "Log block n:o %lu, scanned lsn n:o %lu\n", + no, log_block_convert_lsn_to_no(*scanned_lsn)); +#endif + /* Garbage or an incompletely written log block */ + + log_block += OS_FILE_LOG_BLOCK_SIZE; +#if 0 + fprintf(stderr, + "Next log block n:o %lu\n", + log_block_get_hdr_no(log_block)); +#endif + break; + } + + if (*scanned_checkpoint_no > 0 + && log_block_get_checkpoint_no(log_block) + < *scanned_checkpoint_no + && *scanned_checkpoint_no + - log_block_get_checkpoint_no(log_block) + > 0x80000000UL) { + + /* Garbage from a log buffer flush which was made + before the most recent database recovery */ +#if 0 + fprintf(stderr, + "Scanned cp n:o %lu, block cp n:o %lu\n", + *scanned_checkpoint_no, + log_block_get_checkpoint_no(log_block)); +#endif + break; + } + + data_len = log_block_get_data_len(log_block); + + *scanned_checkpoint_no + = log_block_get_checkpoint_no(log_block); + *scanned_lsn += data_len; + + *n_bytes_scanned += data_len; + + if (data_len < OS_FILE_LOG_BLOCK_SIZE) { + /* Log data ends here */ + +#if 0 + fprintf(stderr, "Log block data len %lu\n", + data_len); +#endif + break; + } + } +} +#endif /* UNIV_HOTBACKUP */ + +/*********************************************************************** +Tries to parse a single log record body and also applies it to a page if +specified. File ops are parsed, but not applied in this function. */ +static +byte* +recv_parse_or_apply_log_rec_body( +/*=============================*/ + /* out: log record end, NULL if not a + complete record */ + byte type, /* in: type */ + byte* ptr, /* in: pointer to a buffer */ + byte* end_ptr,/* in: pointer to the buffer end */ + buf_block_t* block, /* in/out: buffer block or NULL; if + not NULL, then the log record is + applied to the page, and the log + record should be complete then */ + mtr_t* mtr) /* in: mtr or NULL; should be non-NULL + if and only if block is non-NULL */ +{ + dict_index_t* index = NULL; + page_t* page; + page_zip_des_t* page_zip; + + ut_ad(!block == !mtr); + + if (block) { + page = block->frame; + page_zip = buf_block_get_page_zip(block); + } else { + page = NULL; + page_zip = NULL; + } + + switch (type) { + case MLOG_1BYTE: case MLOG_2BYTES: case MLOG_4BYTES: case MLOG_8BYTES: + ptr = mlog_parse_nbytes(type, ptr, end_ptr, page, page_zip); + break; + case MLOG_REC_INSERT: case MLOG_COMP_REC_INSERT: + if (NULL != (ptr = mlog_parse_index( + ptr, end_ptr, + type == MLOG_COMP_REC_INSERT, + &index))) { + ut_a(!page + || (ibool)!!page_is_comp(page) + == dict_table_is_comp(index->table)); + ptr = page_cur_parse_insert_rec(FALSE, ptr, end_ptr, + block, index, mtr); + } + break; + case MLOG_REC_CLUST_DELETE_MARK: case MLOG_COMP_REC_CLUST_DELETE_MARK: + if (NULL != (ptr = mlog_parse_index( + ptr, end_ptr, + type == MLOG_COMP_REC_CLUST_DELETE_MARK, + &index))) { + ut_a(!page + || (ibool)!!page_is_comp(page) + == dict_table_is_comp(index->table)); + ptr = btr_cur_parse_del_mark_set_clust_rec( + ptr, end_ptr, page, page_zip, index); + } + break; + case MLOG_COMP_REC_SEC_DELETE_MARK: + /* This log record type is obsolete, but we process it for + backward compatibility with MySQL 5.0.3 and 5.0.4. */ + ut_a(!page || page_is_comp(page)); + ut_a(!page_zip); + ptr = mlog_parse_index(ptr, end_ptr, TRUE, &index); + if (!ptr) { + break; + } + /* Fall through */ + case MLOG_REC_SEC_DELETE_MARK: + ptr = btr_cur_parse_del_mark_set_sec_rec(ptr, end_ptr, + page, page_zip); + break; + case MLOG_REC_UPDATE_IN_PLACE: case MLOG_COMP_REC_UPDATE_IN_PLACE: + if (NULL != (ptr = mlog_parse_index( + ptr, end_ptr, + type == MLOG_COMP_REC_UPDATE_IN_PLACE, + &index))) { + ut_a(!page + || (ibool)!!page_is_comp(page) + == dict_table_is_comp(index->table)); + ptr = btr_cur_parse_update_in_place(ptr, end_ptr, page, + page_zip, index); + } + break; + case MLOG_LIST_END_DELETE: case MLOG_COMP_LIST_END_DELETE: + case MLOG_LIST_START_DELETE: case MLOG_COMP_LIST_START_DELETE: + if (NULL != (ptr = mlog_parse_index( + ptr, end_ptr, + type == MLOG_COMP_LIST_END_DELETE + || type == MLOG_COMP_LIST_START_DELETE, + &index))) { + ut_a(!page + || (ibool)!!page_is_comp(page) + == dict_table_is_comp(index->table)); + ptr = page_parse_delete_rec_list(type, ptr, end_ptr, + block, index, mtr); + } + break; + case MLOG_LIST_END_COPY_CREATED: case MLOG_COMP_LIST_END_COPY_CREATED: + if (NULL != (ptr = mlog_parse_index( + ptr, end_ptr, + type == MLOG_COMP_LIST_END_COPY_CREATED, + &index))) { + ut_a(!page + || (ibool)!!page_is_comp(page) + == dict_table_is_comp(index->table)); + ptr = page_parse_copy_rec_list_to_created_page( + ptr, end_ptr, block, index, mtr); + } + break; + case MLOG_PAGE_REORGANIZE: case MLOG_COMP_PAGE_REORGANIZE: + if (NULL != (ptr = mlog_parse_index( + ptr, end_ptr, + type == MLOG_COMP_PAGE_REORGANIZE, + &index))) { + ut_a(!page + || (ibool)!!page_is_comp(page) + == dict_table_is_comp(index->table)); + ptr = btr_parse_page_reorganize(ptr, end_ptr, index, + block, mtr); + } + break; + case MLOG_PAGE_CREATE: case MLOG_COMP_PAGE_CREATE: + ut_a(!page_zip); + ptr = page_parse_create(ptr, end_ptr, + type == MLOG_COMP_PAGE_CREATE, + block, mtr); + break; + case MLOG_UNDO_INSERT: + ptr = trx_undo_parse_add_undo_rec(ptr, end_ptr, page); + break; + case MLOG_UNDO_ERASE_END: + ptr = trx_undo_parse_erase_page_end(ptr, end_ptr, page, mtr); + break; + case MLOG_UNDO_INIT: + ptr = trx_undo_parse_page_init(ptr, end_ptr, page, mtr); + break; + case MLOG_UNDO_HDR_DISCARD: + ptr = trx_undo_parse_discard_latest(ptr, end_ptr, page, mtr); + break; + case MLOG_UNDO_HDR_CREATE: + case MLOG_UNDO_HDR_REUSE: + ptr = trx_undo_parse_page_header(type, ptr, end_ptr, + page, mtr); + break; + case MLOG_REC_MIN_MARK: case MLOG_COMP_REC_MIN_MARK: + /* On a compressed page, MLOG_COMP_REC_MIN_MARK + will be followed by MLOG_COMP_REC_DELETE + or MLOG_ZIP_WRITE_HEADER(FIL_PAGE_PREV, FIL_NULL) + in the same mini-transaction. */ + ut_a(type == MLOG_COMP_REC_MIN_MARK || !page_zip); + ptr = btr_parse_set_min_rec_mark( + ptr, end_ptr, type == MLOG_COMP_REC_MIN_MARK, + page, mtr); + break; + case MLOG_REC_DELETE: case MLOG_COMP_REC_DELETE: + if (NULL != (ptr = mlog_parse_index( + ptr, end_ptr, + type == MLOG_COMP_REC_DELETE, + &index))) { + ut_a(!page + || (ibool)!!page_is_comp(page) + == dict_table_is_comp(index->table)); + ptr = page_cur_parse_delete_rec(ptr, end_ptr, + block, index, mtr); + } + break; + case MLOG_IBUF_BITMAP_INIT: + ptr = ibuf_parse_bitmap_init(ptr, end_ptr, block, mtr); + break; + case MLOG_INIT_FILE_PAGE: + ptr = fsp_parse_init_file_page(ptr, end_ptr, block); + break; + case MLOG_WRITE_STRING: + ptr = mlog_parse_string(ptr, end_ptr, page, page_zip); + break; + case MLOG_FILE_CREATE: + case MLOG_FILE_RENAME: + case MLOG_FILE_DELETE: + case MLOG_FILE_CREATE2: + ptr = fil_op_log_parse_or_replay(ptr, end_ptr, type, 0); + break; + case MLOG_ZIP_WRITE_NODE_PTR: + ptr = page_zip_parse_write_node_ptr(ptr, end_ptr, + page, page_zip); + break; + case MLOG_ZIP_WRITE_BLOB_PTR: + ptr = page_zip_parse_write_blob_ptr(ptr, end_ptr, + page, page_zip); + break; + case MLOG_ZIP_WRITE_HEADER: + ptr = page_zip_parse_write_header(ptr, end_ptr, + page, page_zip); + break; + case MLOG_ZIP_PAGE_COMPRESS: + ptr = page_zip_parse_compress(ptr, end_ptr, + page, page_zip); + break; + default: + ptr = NULL; + recv_sys->found_corrupt_log = TRUE; + } + + if (index) { + dict_table_t* table = index->table; + + dict_mem_index_free(index); + dict_mem_table_free(table); + } + + return(ptr); +} + +/************************************************************************* +Calculates the fold value of a page file address: used in inserting or +searching for a log record in the hash table. */ +UNIV_INLINE +ulint +recv_fold( +/*======*/ + /* out: folded value */ + ulint space, /* in: space */ + ulint page_no)/* in: page number */ +{ + return(ut_fold_ulint_pair(space, page_no)); +} + +/************************************************************************* +Calculates the hash value of a page file address: used in inserting or +searching for a log record in the hash table. */ +UNIV_INLINE +ulint +recv_hash( +/*======*/ + /* out: folded value */ + ulint space, /* in: space */ + ulint page_no)/* in: page number */ +{ + return(hash_calc_hash(recv_fold(space, page_no), recv_sys->addr_hash)); +} + +/************************************************************************* +Gets the hashed file address struct for a page. */ +static +recv_addr_t* +recv_get_fil_addr_struct( +/*=====================*/ + /* out: file address struct, NULL if not found from + the hash table */ + ulint space, /* in: space id */ + ulint page_no)/* in: page number */ +{ + recv_addr_t* recv_addr; + + recv_addr = HASH_GET_FIRST(recv_sys->addr_hash, + recv_hash(space, page_no)); + while (recv_addr) { + if ((recv_addr->space == space) + && (recv_addr->page_no == page_no)) { + + break; + } + + recv_addr = HASH_GET_NEXT(addr_hash, recv_addr); + } + + return(recv_addr); +} + +/*********************************************************************** +Adds a new log record to the hash table of log records. */ +static +void +recv_add_to_hash_table( +/*===================*/ + byte type, /* in: log record type */ + ulint space, /* in: space id */ + ulint page_no, /* in: page number */ + byte* body, /* in: log record body */ + byte* rec_end, /* in: log record end */ + ib_uint64_t start_lsn, /* in: start lsn of the mtr */ + ib_uint64_t end_lsn) /* in: end lsn of the mtr */ +{ + recv_t* recv; + ulint len; + recv_data_t* recv_data; + recv_data_t** prev_field; + recv_addr_t* recv_addr; + + if (fil_tablespace_deleted_or_being_deleted_in_mem(space, -1)) { + /* The tablespace does not exist any more: do not store the + log record */ + + return; + } + + len = rec_end - body; + + recv = mem_heap_alloc(recv_sys->heap, sizeof(recv_t)); + recv->type = type; + recv->len = rec_end - body; + recv->start_lsn = start_lsn; + recv->end_lsn = end_lsn; + + recv_addr = recv_get_fil_addr_struct(space, page_no); + + if (recv_addr == NULL) { + recv_addr = mem_heap_alloc(recv_sys->heap, + sizeof(recv_addr_t)); + recv_addr->space = space; + recv_addr->page_no = page_no; + recv_addr->state = RECV_NOT_PROCESSED; + + UT_LIST_INIT(recv_addr->rec_list); + + HASH_INSERT(recv_addr_t, addr_hash, recv_sys->addr_hash, + recv_fold(space, page_no), recv_addr); + recv_sys->n_addrs++; +#if 0 + fprintf(stderr, "Inserting log rec for space %lu, page %lu\n", + space, page_no); +#endif + } + + UT_LIST_ADD_LAST(rec_list, recv_addr->rec_list, recv); + + prev_field = &(recv->data); + + /* Store the log record body in chunks of less than UNIV_PAGE_SIZE: + recv_sys->heap grows into the buffer pool, and bigger chunks could not + be allocated */ + + while (rec_end > body) { + + len = rec_end - body; + + if (len > RECV_DATA_BLOCK_SIZE) { + len = RECV_DATA_BLOCK_SIZE; + } + + recv_data = mem_heap_alloc(recv_sys->heap, + sizeof(recv_data_t) + len); + *prev_field = recv_data; + + ut_memcpy(((byte*)recv_data) + sizeof(recv_data_t), body, len); + + prev_field = &(recv_data->next); + + body += len; + } + + *prev_field = NULL; +} + +/************************************************************************* +Copies the log record body from recv to buf. */ +static +void +recv_data_copy_to_buf( +/*==================*/ + byte* buf, /* in: buffer of length at least recv->len */ + recv_t* recv) /* in: log record */ +{ + recv_data_t* recv_data; + ulint part_len; + ulint len; + + len = recv->len; + recv_data = recv->data; + + while (len > 0) { + if (len > RECV_DATA_BLOCK_SIZE) { + part_len = RECV_DATA_BLOCK_SIZE; + } else { + part_len = len; + } + + ut_memcpy(buf, ((byte*)recv_data) + sizeof(recv_data_t), + part_len); + buf += part_len; + len -= part_len; + + recv_data = recv_data->next; + } +} + +/**************************************************************************** +Applies the hashed log records to the page, if the page lsn is less than the +lsn of a log record. This can be called when a buffer page has just been +read in, or also for a page already in the buffer pool. */ +UNIV_INTERN +void +recv_recover_page( +/*==============*/ + ibool recover_backup, + /* in: TRUE if we are recovering a backup + page: then we do not acquire any latches + since the page was read in outside the + buffer pool */ + ibool just_read_in, + /* in: TRUE if the i/o-handler calls this for + a freshly read page */ + buf_block_t* block) /* in: buffer block */ +{ + page_t* page; + recv_addr_t* recv_addr; + recv_t* recv; + byte* buf; + ib_uint64_t start_lsn; + ib_uint64_t end_lsn; + ib_uint64_t page_lsn; + ib_uint64_t page_newest_lsn; + ibool modification_to_page; + ibool success; + mtr_t mtr; + + mutex_enter(&(recv_sys->mutex)); + + if (recv_sys->apply_log_recs == FALSE) { + + /* Log records should not be applied now */ + + mutex_exit(&(recv_sys->mutex)); + + return; + } + + recv_addr = recv_get_fil_addr_struct(buf_block_get_space(block), + buf_block_get_page_no(block)); + + if ((recv_addr == NULL) + || (recv_addr->state == RECV_BEING_PROCESSED) + || (recv_addr->state == RECV_PROCESSED)) { + + mutex_exit(&(recv_sys->mutex)); + + return; + } + +#if 0 + fprintf(stderr, "Recovering space %lu, page %lu\n", + buf_block_get_space(block), buf_block_get_page_no(block)); +#endif + + recv_addr->state = RECV_BEING_PROCESSED; + + mutex_exit(&(recv_sys->mutex)); + + mtr_start(&mtr); + mtr_set_log_mode(&mtr, MTR_LOG_NONE); + + page = block->frame; + + if (!recover_backup) { + if (just_read_in) { + /* Move the ownership of the x-latch on the + page to this OS thread, so that we can acquire + a second x-latch on it. This is needed for the + operations to the page to pass the debug + checks. */ + + rw_lock_x_lock_move_ownership(&(block->lock)); + } + + success = buf_page_get_known_nowait(RW_X_LATCH, block, + BUF_KEEP_OLD, + __FILE__, __LINE__, + &mtr); + ut_a(success); + + buf_block_dbg_add_level(block, SYNC_NO_ORDER_CHECK); + } + + /* Read the newest modification lsn from the page */ + page_lsn = mach_read_ull(page + FIL_PAGE_LSN); + + if (!recover_backup) { + /* It may be that the page has been modified in the buffer + pool: read the newest modification lsn there */ + + page_newest_lsn + = buf_page_get_newest_modification(&block->page); + + if (page_newest_lsn) { + + page_lsn = page_newest_lsn; + } + } else { + /* In recovery from a backup we do not really use the buffer + pool */ + + page_newest_lsn = 0; + } + + modification_to_page = FALSE; + start_lsn = end_lsn = 0; + + recv = UT_LIST_GET_FIRST(recv_addr->rec_list); + + while (recv) { + end_lsn = recv->end_lsn; + + if (recv->len > RECV_DATA_BLOCK_SIZE) { + /* We have to copy the record body to a separate + buffer */ + + buf = mem_alloc(recv->len); + + recv_data_copy_to_buf(buf, recv); + } else { + buf = ((byte*)(recv->data)) + sizeof(recv_data_t); + } + + if (recv->type == MLOG_INIT_FILE_PAGE) { + page_lsn = page_newest_lsn; + + mach_write_ull(page + UNIV_PAGE_SIZE + - FIL_PAGE_END_LSN_OLD_CHKSUM, 0); + mach_write_ull(page + FIL_PAGE_LSN, 0); + } + + if (recv->start_lsn >= page_lsn) { + + if (!modification_to_page) { + + modification_to_page = TRUE; + start_lsn = recv->start_lsn; + } + +#ifdef UNIV_DEBUG + if (log_debug_writes) { + fprintf(stderr, + "InnoDB: Applying log rec" + " type %lu len %lu" + " to space %lu page no %lu\n", + (ulong) recv->type, (ulong) recv->len, + (ulong) recv_addr->space, + (ulong) recv_addr->page_no); + } +#endif /* UNIV_DEBUG */ + + recv_parse_or_apply_log_rec_body(recv->type, buf, + buf + recv->len, + block, &mtr); + mach_write_ull(page + UNIV_PAGE_SIZE + - FIL_PAGE_END_LSN_OLD_CHKSUM, + recv->start_lsn + recv->len); + mach_write_ull(page + FIL_PAGE_LSN, + recv->start_lsn + recv->len); + } + + if (recv->len > RECV_DATA_BLOCK_SIZE) { + mem_free(buf); + } + + recv = UT_LIST_GET_NEXT(rec_list, recv); + } + +#ifdef UNIV_ZIP_DEBUG + if (fil_page_get_type(page) == FIL_PAGE_INDEX) { + page_zip_des_t* page_zip = buf_block_get_page_zip(block); + + if (page_zip) { + ut_a(page_zip_validate_low(page_zip, page, FALSE)); + } + } +#endif /* UNIV_ZIP_DEBUG */ + + mutex_enter(&(recv_sys->mutex)); + + if (recv_max_page_lsn < page_lsn) { + recv_max_page_lsn = page_lsn; + } + + recv_addr->state = RECV_PROCESSED; + + ut_a(recv_sys->n_addrs); + recv_sys->n_addrs--; + + mutex_exit(&(recv_sys->mutex)); + + if (!recover_backup && modification_to_page) { + ut_a(block); + + buf_flush_recv_note_modification(block, start_lsn, end_lsn); + } + + /* Make sure that committing mtr does not change the modification + lsn values of page */ + + mtr.modifications = FALSE; + + mtr_commit(&mtr); +} + +/*********************************************************************** +Reads in pages which have hashed log records, from an area around a given +page number. */ +static +ulint +recv_read_in_area( +/*==============*/ + /* out: number of pages found */ + ulint space, /* in: space */ + ulint zip_size,/* in: compressed page size in bytes, or 0 */ + ulint page_no)/* in: page number */ +{ + recv_addr_t* recv_addr; + ulint page_nos[RECV_READ_AHEAD_AREA]; + ulint low_limit; + ulint n; + + low_limit = page_no - (page_no % RECV_READ_AHEAD_AREA); + + n = 0; + + for (page_no = low_limit; page_no < low_limit + RECV_READ_AHEAD_AREA; + page_no++) { + recv_addr = recv_get_fil_addr_struct(space, page_no); + + if (recv_addr && !buf_page_peek(space, page_no)) { + + mutex_enter(&(recv_sys->mutex)); + + if (recv_addr->state == RECV_NOT_PROCESSED) { + recv_addr->state = RECV_BEING_READ; + + page_nos[n] = page_no; + + n++; + } + + mutex_exit(&(recv_sys->mutex)); + } + } + + buf_read_recv_pages(FALSE, space, zip_size, page_nos, n); + /* + fprintf(stderr, "Recv pages at %lu n %lu\n", page_nos[0], n); + */ + return(n); +} + +/*********************************************************************** +Empties the hash table of stored log records, applying them to appropriate +pages. */ +UNIV_INTERN +void +recv_apply_hashed_log_recs( +/*=======================*/ + ibool allow_ibuf) /* in: if TRUE, also ibuf operations are + allowed during the application; if FALSE, + no ibuf operations are allowed, and after + the application all file pages are flushed to + disk and invalidated in buffer pool: this + alternative means that no new log records + can be generated during the application; + the caller must in this case own the log + mutex */ +{ + recv_addr_t* recv_addr; + ulint i; + ulint n_pages; + ibool has_printed = FALSE; + mtr_t mtr; +loop: + mutex_enter(&(recv_sys->mutex)); + + if (recv_sys->apply_batch_on) { + + mutex_exit(&(recv_sys->mutex)); + + os_thread_sleep(500000); + + goto loop; + } + + ut_ad(!allow_ibuf == mutex_own(&log_sys->mutex)); + + if (!allow_ibuf) { + recv_no_ibuf_operations = TRUE; + } + + recv_sys->apply_log_recs = TRUE; + recv_sys->apply_batch_on = TRUE; + + for (i = 0; i < hash_get_n_cells(recv_sys->addr_hash); i++) { + + recv_addr = HASH_GET_FIRST(recv_sys->addr_hash, i); + + while (recv_addr) { + ulint space = recv_addr->space; + ulint zip_size = fil_space_get_zip_size(space); + ulint page_no = recv_addr->page_no; + + if (recv_addr->state == RECV_NOT_PROCESSED) { + if (!has_printed) { + ut_print_timestamp(stderr); + fputs(" InnoDB: Starting an" + " apply batch of log records" + " to the database...\n" + "InnoDB: Progress in percents: ", + stderr); + has_printed = TRUE; + } + + mutex_exit(&(recv_sys->mutex)); + + if (buf_page_peek(space, page_no)) { + buf_block_t* block; + + mtr_start(&mtr); + + block = buf_page_get( + space, zip_size, page_no, + RW_X_LATCH, &mtr); + buf_block_dbg_add_level( + block, SYNC_NO_ORDER_CHECK); + + recv_recover_page(FALSE, FALSE, block); + mtr_commit(&mtr); + } else { + recv_read_in_area(space, zip_size, + page_no); + } + + mutex_enter(&(recv_sys->mutex)); + } + + recv_addr = HASH_GET_NEXT(addr_hash, recv_addr); + } + + if (has_printed + && (i * 100) / hash_get_n_cells(recv_sys->addr_hash) + != ((i + 1) * 100) + / hash_get_n_cells(recv_sys->addr_hash)) { + + fprintf(stderr, "%lu ", (ulong) + ((i * 100) + / hash_get_n_cells(recv_sys->addr_hash))); + } + } + + /* Wait until all the pages have been processed */ + + while (recv_sys->n_addrs != 0) { + + mutex_exit(&(recv_sys->mutex)); + + os_thread_sleep(500000); + + mutex_enter(&(recv_sys->mutex)); + } + + if (has_printed) { + + fprintf(stderr, "\n"); + } + + if (!allow_ibuf) { + /* Flush all the file pages to disk and invalidate them in + the buffer pool */ + + mutex_exit(&(recv_sys->mutex)); + mutex_exit(&(log_sys->mutex)); + + n_pages = buf_flush_batch(BUF_FLUSH_LIST, ULINT_MAX, + IB_ULONGLONG_MAX); + ut_a(n_pages != ULINT_UNDEFINED); + + buf_flush_wait_batch_end(BUF_FLUSH_LIST); + + buf_pool_invalidate(); + + mutex_enter(&(log_sys->mutex)); + mutex_enter(&(recv_sys->mutex)); + + recv_no_ibuf_operations = FALSE; + } + + recv_sys->apply_log_recs = FALSE; + recv_sys->apply_batch_on = FALSE; + + recv_sys_empty_hash(); + + if (has_printed) { + fprintf(stderr, "InnoDB: Apply batch completed\n"); + } + + mutex_exit(&(recv_sys->mutex)); +} + +#ifdef UNIV_HOTBACKUP +/*********************************************************************** +Applies log records in the hash table to a backup. */ +UNIV_INTERN +void +recv_apply_log_recs_for_backup(void) +/*================================*/ +{ + recv_addr_t* recv_addr; + ulint n_hash_cells; + buf_block_t* block; + ulint actual_size; + ibool success; + ulint error; + ulint i; + + recv_sys->apply_log_recs = TRUE; + recv_sys->apply_batch_on = TRUE; + + block = buf_LRU_get_free_block(UNIV_PAGE_SIZE); + + fputs("InnoDB: Starting an apply batch of log records" + " to the database...\n" + "InnoDB: Progress in percents: ", stderr); + + n_hash_cells = hash_get_n_cells(recv_sys->addr_hash); + + for (i = 0; i < n_hash_cells; i++) { + /* The address hash table is externally chained */ + recv_addr = hash_get_nth_cell(recv_sys->addr_hash, i)->node; + + while (recv_addr != NULL) { + + ulint zip_size + = fil_space_get_zip_size(recv_addr->space); + + if (zip_size == ULINT_UNDEFINED) { +#if 0 + fprintf(stderr, + "InnoDB: Warning: cannot apply" + " log record to" + " tablespace %lu page %lu,\n" + "InnoDB: because tablespace with" + " that id does not exist.\n", + recv_addr->space, recv_addr->page_no); +#endif + recv_addr->state = RECV_PROCESSED; + + ut_a(recv_sys->n_addrs); + recv_sys->n_addrs--; + + goto skip_this_recv_addr; + } + + /* We simulate a page read made by the buffer pool, to + make sure the recovery apparatus works ok. We must init + the block. */ + + buf_page_init_for_backup_restore( + recv_addr->space, recv_addr->page_no, + zip_size, block); + + /* Extend the tablespace's last file if the page_no + does not fall inside its bounds; we assume the last + file is auto-extending, and ibbackup copied the file + when it still was smaller */ + + success = fil_extend_space_to_desired_size( + &actual_size, + recv_addr->space, recv_addr->page_no + 1); + if (!success) { + fprintf(stderr, + "InnoDB: Fatal error: cannot extend" + " tablespace %lu to hold %lu pages\n", + recv_addr->space, recv_addr->page_no); + + exit(1); + } + + /* Read the page from the tablespace file using the + fil0fil.c routines */ + + if (zip_size) { + error = fil_io(OS_FILE_READ, TRUE, + recv_addr->space, zip_size, + recv_addr->page_no, 0, zip_size, + block->page.zip.data, NULL); + } else { + error = fil_io(OS_FILE_READ, TRUE, + recv_addr->space, 0, + recv_addr->page_no, 0, + UNIV_PAGE_SIZE, + block->frame, NULL); + } + + if (error != DB_SUCCESS) { + fprintf(stderr, + "InnoDB: Fatal error: cannot read" + " from tablespace" + " %lu page number %lu\n", + (ulong) recv_addr->space, + (ulong) recv_addr->page_no); + + exit(1); + } + + /* Apply the log records to this page */ + recv_recover_page(TRUE, FALSE, block); + + /* Write the page back to the tablespace file using the + fil0fil.c routines */ + + buf_flush_init_for_writing( + block->frame, buf_block_get_page_zip(block), + mach_read_ull(block->frame + FIL_PAGE_LSN)); + + if (zip_size) { + error = fil_io(OS_FILE_WRITE, TRUE, + recv_addr->space, zip_size, + recv_addr->page_no, 0, + zip_size, + block->page.zip.data, NULL); + } else { + error = fil_io(OS_FILE_WRITE, TRUE, + recv_addr->space, 0, + recv_addr->page_no, 0, + UNIV_PAGE_SIZE, + block->frame, NULL); + } +skip_this_recv_addr: + recv_addr = HASH_GET_NEXT(addr_hash, recv_addr); + } + + if ((100 * i) / n_hash_cells + != (100 * (i + 1)) / n_hash_cells) { + fprintf(stderr, "%lu ", + (ulong) ((100 * i) / n_hash_cells)); + fflush(stderr); + } + } + + buf_block_free(block); + recv_sys_empty_hash(); +} +#endif /* UNIV_HOTBACKUP */ + +/*********************************************************************** +Tries to parse a single log record and returns its length. */ +static +ulint +recv_parse_log_rec( +/*===============*/ + /* out: length of the record, or 0 if the record was + not complete */ + byte* ptr, /* in: pointer to a buffer */ + byte* end_ptr,/* in: pointer to the buffer end */ + byte* type, /* out: type */ + ulint* space, /* out: space id */ + ulint* page_no,/* out: page number */ + byte** body) /* out: log record body start */ +{ + byte* new_ptr; + + *body = NULL; + + if (ptr == end_ptr) { + + return(0); + } + + if (*ptr == MLOG_MULTI_REC_END) { + + *type = *ptr; + + return(1); + } + + if (*ptr == MLOG_DUMMY_RECORD) { + *type = *ptr; + + *space = ULINT_UNDEFINED - 1; /* For debugging */ + + return(1); + } + + new_ptr = mlog_parse_initial_log_record(ptr, end_ptr, type, space, + page_no); + *body = new_ptr; + + if (UNIV_UNLIKELY(!new_ptr)) { + + return(0); + } + + /* Check that page_no is sensible */ + + if (UNIV_UNLIKELY(*page_no > 0x8FFFFFFFUL)) { + + recv_sys->found_corrupt_log = TRUE; + + return(0); + } + + new_ptr = recv_parse_or_apply_log_rec_body(*type, new_ptr, end_ptr, + NULL, NULL); + if (UNIV_UNLIKELY(new_ptr == NULL)) { + + return(0); + } + + if (*page_no > recv_max_parsed_page_no) { + recv_max_parsed_page_no = *page_no; + } + + return(new_ptr - ptr); +} + +/*********************************************************** +Calculates the new value for lsn when more data is added to the log. */ +static +ib_uint64_t +recv_calc_lsn_on_data_add( +/*======================*/ + ib_uint64_t lsn, /* in: old lsn */ + ib_uint64_t len) /* in: this many bytes of data is + added, log block headers not included */ +{ + ulint frag_len; + ulint lsn_len; + + frag_len = (((ulint) lsn) % OS_FILE_LOG_BLOCK_SIZE) + - LOG_BLOCK_HDR_SIZE; + ut_ad(frag_len < OS_FILE_LOG_BLOCK_SIZE - LOG_BLOCK_HDR_SIZE + - LOG_BLOCK_TRL_SIZE); + lsn_len = (ulint) len; + lsn_len += (lsn_len + frag_len) + / (OS_FILE_LOG_BLOCK_SIZE - LOG_BLOCK_HDR_SIZE + - LOG_BLOCK_TRL_SIZE) + * (LOG_BLOCK_HDR_SIZE + LOG_BLOCK_TRL_SIZE); + + return(lsn + lsn_len); +} + +#ifdef UNIV_LOG_DEBUG +/*********************************************************** +Checks that the parser recognizes incomplete initial segments of a log +record as incomplete. */ +static +void +recv_check_incomplete_log_recs( +/*===========================*/ + byte* ptr, /* in: pointer to a complete log record */ + ulint len) /* in: length of the log record */ +{ + ulint i; + byte type; + ulint space; + ulint page_no; + byte* body; + + for (i = 0; i < len; i++) { + ut_a(0 == recv_parse_log_rec(ptr, ptr + i, &type, &space, + &page_no, &body)); + } +} +#endif /* UNIV_LOG_DEBUG */ + +/*********************************************************** +Prints diagnostic info of corrupt log. */ +static +void +recv_report_corrupt_log( +/*====================*/ + byte* ptr, /* in: pointer to corrupt log record */ + byte type, /* in: type of the record */ + ulint space, /* in: space id, this may also be garbage */ + ulint page_no)/* in: page number, this may also be garbage */ +{ + fprintf(stderr, + "InnoDB: ############### CORRUPT LOG RECORD FOUND\n" + "InnoDB: Log record type %lu, space id %lu, page number %lu\n" + "InnoDB: Log parsing proceeded successfully up to %llu\n" + "InnoDB: Previous log record type %lu, is multi %lu\n" + "InnoDB: Recv offset %lu, prev %lu\n", + (ulong) type, (ulong) space, (ulong) page_no, + recv_sys->recovered_lsn, + (ulong) recv_previous_parsed_rec_type, + (ulong) recv_previous_parsed_rec_is_multi, + (ulong) (ptr - recv_sys->buf), + (ulong) recv_previous_parsed_rec_offset); + + if ((ulint)(ptr - recv_sys->buf + 100) + > recv_previous_parsed_rec_offset + && (ulint)(ptr - recv_sys->buf + 100 + - recv_previous_parsed_rec_offset) + < 200000) { + fputs("InnoDB: Hex dump of corrupt log starting" + " 100 bytes before the start\n" + "InnoDB: of the previous log rec,\n" + "InnoDB: and ending 100 bytes after the start" + " of the corrupt rec:\n", + stderr); + + ut_print_buf(stderr, + recv_sys->buf + + recv_previous_parsed_rec_offset - 100, + ptr - recv_sys->buf + 200 + - recv_previous_parsed_rec_offset); + putc('\n', stderr); + } + + fputs("InnoDB: WARNING: the log file may have been corrupt and it\n" + "InnoDB: is possible that the log scan did not proceed\n" + "InnoDB: far enough in recovery! Please run CHECK TABLE\n" + "InnoDB: on your InnoDB tables to check that they are ok!\n" + "InnoDB: If mysqld crashes after this recovery, look at\n" + "InnoDB: http://dev.mysql.com/doc/refman/5.1/en/" + "forcing-recovery.html\n" + "InnoDB: about forcing recovery.\n", stderr); + + fflush(stderr); +} + +/*********************************************************** +Parses log records from a buffer and stores them to a hash table to wait +merging to file pages. */ +static +ibool +recv_parse_log_recs( +/*================*/ + /* out: currently always returns FALSE */ + ibool store_to_hash) /* in: TRUE if the records should be stored + to the hash table; this is set to FALSE if just + debug checking is needed */ +{ + byte* ptr; + byte* end_ptr; + ulint single_rec; + ulint len; + ulint total_len; + ib_uint64_t new_recovered_lsn; + ib_uint64_t old_lsn; + byte type; + ulint space; + ulint page_no; + byte* body; + ulint n_recs; + + ut_ad(mutex_own(&(log_sys->mutex))); + ut_ad(recv_sys->parse_start_lsn != 0); +loop: + ptr = recv_sys->buf + recv_sys->recovered_offset; + + end_ptr = recv_sys->buf + recv_sys->len; + + if (ptr == end_ptr) { + + return(FALSE); + } + + single_rec = (ulint)*ptr & MLOG_SINGLE_REC_FLAG; + + if (single_rec || *ptr == MLOG_DUMMY_RECORD) { + /* The mtr only modified a single page, or this is a file op */ + + old_lsn = recv_sys->recovered_lsn; + + /* Try to parse a log record, fetching its type, space id, + page no, and a pointer to the body of the log record */ + + len = recv_parse_log_rec(ptr, end_ptr, &type, &space, + &page_no, &body); + + if (len == 0 || recv_sys->found_corrupt_log) { + if (recv_sys->found_corrupt_log) { + + recv_report_corrupt_log(ptr, + type, space, page_no); + } + + return(FALSE); + } + + new_recovered_lsn = recv_calc_lsn_on_data_add(old_lsn, len); + + if (new_recovered_lsn > recv_sys->scanned_lsn) { + /* The log record filled a log block, and we require + that also the next log block should have been scanned + in */ + + return(FALSE); + } + + recv_previous_parsed_rec_type = (ulint)type; + recv_previous_parsed_rec_offset = recv_sys->recovered_offset; + recv_previous_parsed_rec_is_multi = 0; + + recv_sys->recovered_offset += len; + recv_sys->recovered_lsn = new_recovered_lsn; + +#ifdef UNIV_DEBUG + if (log_debug_writes) { + fprintf(stderr, + "InnoDB: Parsed a single log rec" + " type %lu len %lu space %lu page no %lu\n", + (ulong) type, (ulong) len, (ulong) space, + (ulong) page_no); + } +#endif /* UNIV_DEBUG */ + + if (type == MLOG_DUMMY_RECORD) { + /* Do nothing */ + + } else if (!store_to_hash) { + /* In debug checking, update a replicate page + according to the log record, and check that it + becomes identical with the original page */ +#ifdef UNIV_LOG_DEBUG + recv_check_incomplete_log_recs(ptr, len); +#endif/* UNIV_LOG_DEBUG */ + + } else if (type == MLOG_FILE_CREATE + || type == MLOG_FILE_CREATE2 + || type == MLOG_FILE_RENAME + || type == MLOG_FILE_DELETE) { + ut_a(space); +#ifdef UNIV_HOTBACKUP + if (recv_replay_file_ops) { + + /* In ibbackup --apply-log, replay an .ibd file + operation, if possible; note that + fil_path_to_mysql_datadir is set in ibbackup to + point to the datadir we should use there */ + + if (NULL == fil_op_log_parse_or_replay( + body, end_ptr, type, space)) { + fprintf(stderr, + "InnoDB: Error: file op" + " log record of type %lu" + " space %lu not complete in\n" + "InnoDB: the replay phase." + " Path %s\n", + (ulint)type, space, + (char*)(body + 2)); + + ut_error; + } + } +#endif + /* In normal mysqld crash recovery we do not try to + replay file operations */ + } else { + recv_add_to_hash_table(type, space, page_no, body, + ptr + len, old_lsn, + recv_sys->recovered_lsn); + } + } else { + /* Check that all the records associated with the single mtr + are included within the buffer */ + + total_len = 0; + n_recs = 0; + + for (;;) { + len = recv_parse_log_rec(ptr, end_ptr, &type, &space, + &page_no, &body); + if (len == 0 || recv_sys->found_corrupt_log) { + + if (recv_sys->found_corrupt_log) { + + recv_report_corrupt_log( + ptr, type, space, page_no); + } + + return(FALSE); + } + + recv_previous_parsed_rec_type = (ulint)type; + recv_previous_parsed_rec_offset + = recv_sys->recovered_offset + total_len; + recv_previous_parsed_rec_is_multi = 1; + + if ((!store_to_hash) && (type != MLOG_MULTI_REC_END)) { +#ifdef UNIV_LOG_DEBUG + recv_check_incomplete_log_recs(ptr, len); +#endif /* UNIV_LOG_DEBUG */ + } + +#ifdef UNIV_DEBUG + if (log_debug_writes) { + fprintf(stderr, + "InnoDB: Parsed a multi log rec" + " type %lu len %lu" + " space %lu page no %lu\n", + (ulong) type, (ulong) len, + (ulong) space, (ulong) page_no); + } +#endif /* UNIV_DEBUG */ + + total_len += len; + n_recs++; + + ptr += len; + + if (type == MLOG_MULTI_REC_END) { + + /* Found the end mark for the records */ + + break; + } + } + + new_recovered_lsn = recv_calc_lsn_on_data_add( + recv_sys->recovered_lsn, total_len); + + if (new_recovered_lsn > recv_sys->scanned_lsn) { + /* The log record filled a log block, and we require + that also the next log block should have been scanned + in */ + + return(FALSE); + } + + /* Add all the records to the hash table */ + + ptr = recv_sys->buf + recv_sys->recovered_offset; + + for (;;) { + old_lsn = recv_sys->recovered_lsn; + len = recv_parse_log_rec(ptr, end_ptr, &type, &space, + &page_no, &body); + if (recv_sys->found_corrupt_log) { + + recv_report_corrupt_log(ptr, + type, space, page_no); + } + + ut_a(len != 0); + ut_a(0 == ((ulint)*ptr & MLOG_SINGLE_REC_FLAG)); + + recv_sys->recovered_offset += len; + recv_sys->recovered_lsn + = recv_calc_lsn_on_data_add(old_lsn, len); + if (type == MLOG_MULTI_REC_END) { + + /* Found the end mark for the records */ + + break; + } + + if (store_to_hash) { + recv_add_to_hash_table(type, space, page_no, + body, ptr + len, + old_lsn, + new_recovered_lsn); + } + + ptr += len; + } + } + + goto loop; +} + +/*********************************************************** +Adds data from a new log block to the parsing buffer of recv_sys if +recv_sys->parse_start_lsn is non-zero. */ +static +ibool +recv_sys_add_to_parsing_buf( +/*========================*/ + /* out: TRUE if more data added */ + byte* log_block, /* in: log block */ + ib_uint64_t scanned_lsn) /* in: lsn of how far we were able + to find data in this log block */ +{ + ulint more_len; + ulint data_len; + ulint start_offset; + ulint end_offset; + + ut_ad(scanned_lsn >= recv_sys->scanned_lsn); + + if (!recv_sys->parse_start_lsn) { + /* Cannot start parsing yet because no start point for + it found */ + + return(FALSE); + } + + data_len = log_block_get_data_len(log_block); + + if (recv_sys->parse_start_lsn >= scanned_lsn) { + + return(FALSE); + + } else if (recv_sys->scanned_lsn >= scanned_lsn) { + + return(FALSE); + + } else if (recv_sys->parse_start_lsn > recv_sys->scanned_lsn) { + more_len = (ulint) (scanned_lsn - recv_sys->parse_start_lsn); + } else { + more_len = (ulint) (scanned_lsn - recv_sys->scanned_lsn); + } + + if (more_len == 0) { + + return(FALSE); + } + + ut_ad(data_len >= more_len); + + start_offset = data_len - more_len; + + if (start_offset < LOG_BLOCK_HDR_SIZE) { + start_offset = LOG_BLOCK_HDR_SIZE; + } + + end_offset = data_len; + + if (end_offset > OS_FILE_LOG_BLOCK_SIZE - LOG_BLOCK_TRL_SIZE) { + end_offset = OS_FILE_LOG_BLOCK_SIZE - LOG_BLOCK_TRL_SIZE; + } + + ut_ad(start_offset <= end_offset); + + if (start_offset < end_offset) { + ut_memcpy(recv_sys->buf + recv_sys->len, + log_block + start_offset, end_offset - start_offset); + + recv_sys->len += end_offset - start_offset; + + ut_a(recv_sys->len <= RECV_PARSING_BUF_SIZE); + } + + return(TRUE); +} + +/*********************************************************** +Moves the parsing buffer data left to the buffer start. */ +static +void +recv_sys_justify_left_parsing_buf(void) +/*===================================*/ +{ + ut_memmove(recv_sys->buf, recv_sys->buf + recv_sys->recovered_offset, + recv_sys->len - recv_sys->recovered_offset); + + recv_sys->len -= recv_sys->recovered_offset; + + recv_sys->recovered_offset = 0; +} + +/*********************************************************** +Scans log from a buffer and stores new log data to the parsing buffer. Parses +and hashes the log records if new data found. */ +UNIV_INTERN +ibool +recv_scan_log_recs( +/*===============*/ + /* out: TRUE if limit_lsn has been + reached, or not able to scan any more + in this log group */ + ibool apply_automatically,/* in: TRUE if we want this + function to apply log records + automatically when the hash table + becomes full; in the hot backup tool + the tool does the applying, not this + function */ + ulint available_memory,/* in: we let the hash table of recs + to grow to this size, at the maximum */ + ibool store_to_hash, /* in: TRUE if the records should be + stored to the hash table; this is set + to FALSE if just debug checking is + needed */ + byte* buf, /* in: buffer containing a log segment + or garbage */ + ulint len, /* in: buffer length */ + ib_uint64_t start_lsn, /* in: buffer start lsn */ + ib_uint64_t* contiguous_lsn, /* in/out: it is known that all log + groups contain contiguous log data up + to this lsn */ + ib_uint64_t* group_scanned_lsn)/* out: scanning succeeded up to + this lsn */ +{ + byte* log_block; + ulint no; + ib_uint64_t scanned_lsn; + ibool finished; + ulint data_len; + ibool more_data; + + ut_ad(start_lsn % OS_FILE_LOG_BLOCK_SIZE == 0); + ut_ad(len % OS_FILE_LOG_BLOCK_SIZE == 0); + ut_ad(len > 0); + ut_a(apply_automatically <= TRUE); + ut_a(store_to_hash <= TRUE); + + finished = FALSE; + + log_block = buf; + scanned_lsn = start_lsn; + more_data = FALSE; + + while (log_block < buf + len && !finished) { + + no = log_block_get_hdr_no(log_block); + /* + fprintf(stderr, "Log block header no %lu\n", no); + + fprintf(stderr, "Scanned lsn no %lu\n", + log_block_convert_lsn_to_no(scanned_lsn)); + */ + if (no != log_block_convert_lsn_to_no(scanned_lsn) + || !log_block_checksum_is_ok_or_old_format(log_block)) { + + if (no == log_block_convert_lsn_to_no(scanned_lsn) + && !log_block_checksum_is_ok_or_old_format( + log_block)) { + fprintf(stderr, + "InnoDB: Log block no %lu at" + " lsn %llu has\n" + "InnoDB: ok header, but checksum field" + " contains %lu, should be %lu\n", + (ulong) no, + scanned_lsn, + (ulong) log_block_get_checksum( + log_block), + (ulong) log_block_calc_checksum( + log_block)); + } + + /* Garbage or an incompletely written log block */ + + finished = TRUE; + + break; + } + + if (log_block_get_flush_bit(log_block)) { + /* This block was a start of a log flush operation: + we know that the previous flush operation must have + been completed for all log groups before this block + can have been flushed to any of the groups. Therefore, + we know that log data is contiguous up to scanned_lsn + in all non-corrupt log groups. */ + + if (scanned_lsn > *contiguous_lsn) { + *contiguous_lsn = scanned_lsn; + } + } + + data_len = log_block_get_data_len(log_block); + + if ((store_to_hash || (data_len == OS_FILE_LOG_BLOCK_SIZE)) + && scanned_lsn + data_len > recv_sys->scanned_lsn + && (recv_sys->scanned_checkpoint_no > 0) + && (log_block_get_checkpoint_no(log_block) + < recv_sys->scanned_checkpoint_no) + && (recv_sys->scanned_checkpoint_no + - log_block_get_checkpoint_no(log_block) + > 0x80000000UL)) { + + /* Garbage from a log buffer flush which was made + before the most recent database recovery */ + + finished = TRUE; +#ifdef UNIV_LOG_DEBUG + /* This is not really an error, but currently + we stop here in the debug version: */ + + ut_error; +#endif + break; + } + + if (!recv_sys->parse_start_lsn + && (log_block_get_first_rec_group(log_block) > 0)) { + + /* We found a point from which to start the parsing + of log records */ + + recv_sys->parse_start_lsn = scanned_lsn + + log_block_get_first_rec_group(log_block); + recv_sys->scanned_lsn = recv_sys->parse_start_lsn; + recv_sys->recovered_lsn = recv_sys->parse_start_lsn; + } + + scanned_lsn += data_len; + + if (scanned_lsn > recv_sys->scanned_lsn) { + + /* We have found more entries. If this scan is + of startup type, we must initiate crash recovery + environment before parsing these log records. */ + + if (recv_log_scan_is_startup_type + && !recv_needed_recovery) { + + fprintf(stderr, + "InnoDB: Log scan progressed" + " past the checkpoint lsn %llu\n", + recv_sys->scanned_lsn); + recv_init_crash_recovery(); + } + + /* We were able to find more log data: add it to the + parsing buffer if parse_start_lsn is already + non-zero */ + + if (recv_sys->len + 4 * OS_FILE_LOG_BLOCK_SIZE + >= RECV_PARSING_BUF_SIZE) { + fprintf(stderr, + "InnoDB: Error: log parsing" + " buffer overflow." + " Recovery may have failed!\n"); + + recv_sys->found_corrupt_log = TRUE; + + } else if (!recv_sys->found_corrupt_log) { + more_data = recv_sys_add_to_parsing_buf( + log_block, scanned_lsn); + } + + recv_sys->scanned_lsn = scanned_lsn; + recv_sys->scanned_checkpoint_no + = log_block_get_checkpoint_no(log_block); + } + + if (data_len < OS_FILE_LOG_BLOCK_SIZE) { + /* Log data for this group ends here */ + + finished = TRUE; + } else { + log_block += OS_FILE_LOG_BLOCK_SIZE; + } + } + + *group_scanned_lsn = scanned_lsn; + + if (recv_needed_recovery + || (recv_is_from_backup && !recv_is_making_a_backup)) { + recv_scan_print_counter++; + + if (finished || (recv_scan_print_counter % 80 == 0)) { + + fprintf(stderr, + "InnoDB: Doing recovery: scanned up to" + " log sequence number %llu\n", + *group_scanned_lsn); + } + } + + if (more_data && !recv_sys->found_corrupt_log) { + /* Try to parse more log records */ + + recv_parse_log_recs(store_to_hash); + + if (store_to_hash && mem_heap_get_size(recv_sys->heap) + > available_memory + && apply_automatically) { + + /* Hash table of log records has grown too big: + empty it; FALSE means no ibuf operations + allowed, as we cannot add new records to the + log yet: they would be produced by ibuf + operations */ + + recv_apply_hashed_log_recs(FALSE); + } + + if (recv_sys->recovered_offset > RECV_PARSING_BUF_SIZE / 4) { + /* Move parsing buffer data to the buffer start */ + + recv_sys_justify_left_parsing_buf(); + } + } + + return(finished); +} + +/*********************************************************** +Scans log from a buffer and stores new log data to the parsing buffer. Parses +and hashes the log records if new data found. */ +static +void +recv_group_scan_log_recs( +/*=====================*/ + log_group_t* group, /* in: log group */ + ib_uint64_t* contiguous_lsn, /* in/out: it is known that all log + groups contain contiguous log data up + to this lsn */ + ib_uint64_t* group_scanned_lsn)/* out: scanning succeeded up to + this lsn */ +{ + ibool finished; + ib_uint64_t start_lsn; + ib_uint64_t end_lsn; + + finished = FALSE; + + start_lsn = *contiguous_lsn; + + while (!finished) { + end_lsn = start_lsn + RECV_SCAN_SIZE; + + log_group_read_log_seg(LOG_RECOVER, log_sys->buf, + group, start_lsn, end_lsn); + + finished = recv_scan_log_recs( + TRUE, (buf_pool->curr_size - recv_n_pool_free_frames) + * UNIV_PAGE_SIZE, TRUE, log_sys->buf, RECV_SCAN_SIZE, + start_lsn, contiguous_lsn, group_scanned_lsn); + start_lsn = end_lsn; + } + +#ifdef UNIV_DEBUG + if (log_debug_writes) { + fprintf(stderr, + "InnoDB: Scanned group %lu up to" + " log sequence number %llu\n", + (ulong) group->id, + *group_scanned_lsn); + } +#endif /* UNIV_DEBUG */ +} + +/*********************************************************** +Initialize crash recovery environment. Can be called iff +recv_needed_recovery == FALSE. */ +static +void +recv_init_crash_recovery(void) +/*==========================*/ +{ + ut_a(!recv_needed_recovery); + + recv_needed_recovery = TRUE; + + ut_print_timestamp(stderr); + + fprintf(stderr, + " InnoDB: Database was not" + " shut down normally!\n" + "InnoDB: Starting crash recovery.\n"); + + fprintf(stderr, + "InnoDB: Reading tablespace information" + " from the .ibd files...\n"); + + fil_load_single_table_tablespaces(); + + /* If we are using the doublewrite method, we will + check if there are half-written pages in data files, + and restore them from the doublewrite buffer if + possible */ + + if (srv_force_recovery < SRV_FORCE_NO_LOG_REDO) { + + fprintf(stderr, + "InnoDB: Restoring possible" + " half-written data pages from" + " the doublewrite\n" + "InnoDB: buffer...\n"); + trx_sys_doublewrite_init_or_restore_pages(TRUE); + } +} + +/************************************************************ +Recovers from a checkpoint. When this function returns, the database is able +to start processing of new user transactions, but the function +recv_recovery_from_checkpoint_finish should be called later to complete +the recovery and free the resources used in it. */ +UNIV_INTERN +ulint +recv_recovery_from_checkpoint_start_func( +/*=====================================*/ + /* out: error code or DB_SUCCESS */ +#ifdef UNIV_LOG_ARCHIVE + ulint type, /* in: LOG_CHECKPOINT or LOG_ARCHIVE */ + ib_uint64_t limit_lsn, /* in: recover up to this lsn + if possible */ +#endif /* UNIV_LOG_ARCHIVE */ + ib_uint64_t min_flushed_lsn,/* in: min flushed lsn from + data files */ + ib_uint64_t max_flushed_lsn)/* in: max flushed lsn from + data files */ +{ + log_group_t* group; + log_group_t* max_cp_group; + log_group_t* up_to_date_group; + ulint max_cp_field; + ib_uint64_t checkpoint_lsn; + ib_uint64_t checkpoint_no; + ib_uint64_t old_scanned_lsn; + ib_uint64_t group_scanned_lsn; + ib_uint64_t contiguous_lsn; + ib_uint64_t archived_lsn; + byte* buf; + byte log_hdr_buf[LOG_FILE_HDR_SIZE]; + ulint err; + +#ifdef UNIV_LOG_ARCHIVE + ut_ad(type != LOG_CHECKPOINT || limit_lsn == IB_ULONGLONG_MAX); +# define TYPE_CHECKPOINT (type == LOG_CHECKPOINT) +# define LIMIT_LSN limit_lsn +#else /* UNIV_LOG_ARCHIVE */ +# define TYPE_CHECKPOINT 1 +# define LIMIT_LSN IB_ULONGLONG_MAX +#endif /* UNIV_LOG_ARCHIVE */ + + if (TYPE_CHECKPOINT) { + recv_sys_create(); + recv_sys_init(FALSE, buf_pool_get_curr_size()); + } + + if (srv_force_recovery >= SRV_FORCE_NO_LOG_REDO) { + fprintf(stderr, + "InnoDB: The user has set SRV_FORCE_NO_LOG_REDO on\n"); + fprintf(stderr, + "InnoDB: Skipping log redo\n"); + + return(DB_SUCCESS); + } + + recv_recovery_on = TRUE; + + recv_sys->limit_lsn = LIMIT_LSN; + + mutex_enter(&(log_sys->mutex)); + + /* Look for the latest checkpoint from any of the log groups */ + + err = recv_find_max_checkpoint(&max_cp_group, &max_cp_field); + + if (err != DB_SUCCESS) { + + mutex_exit(&(log_sys->mutex)); + + return(err); + } + + log_group_read_checkpoint_info(max_cp_group, max_cp_field); + + buf = log_sys->checkpoint_buf; + + checkpoint_lsn = mach_read_ull(buf + LOG_CHECKPOINT_LSN); + checkpoint_no = mach_read_ull(buf + LOG_CHECKPOINT_NO); + archived_lsn = mach_read_ull(buf + LOG_CHECKPOINT_ARCHIVED_LSN); + + /* Read the first log file header to print a note if this is + a recovery from a restored InnoDB Hot Backup */ + + fil_io(OS_FILE_READ | OS_FILE_LOG, TRUE, max_cp_group->space_id, 0, + 0, 0, LOG_FILE_HDR_SIZE, + log_hdr_buf, max_cp_group); + + if (0 == ut_memcmp(log_hdr_buf + LOG_FILE_WAS_CREATED_BY_HOT_BACKUP, + (byte*)"ibbackup", (sizeof "ibbackup") - 1)) { + /* This log file was created by ibbackup --restore: print + a note to the user about it */ + + fprintf(stderr, + "InnoDB: The log file was created by" + " ibbackup --apply-log at\n" + "InnoDB: %s\n", + log_hdr_buf + LOG_FILE_WAS_CREATED_BY_HOT_BACKUP); + fprintf(stderr, + "InnoDB: NOTE: the following crash recovery" + " is part of a normal restore.\n"); + + /* Wipe over the label now */ + + memset(log_hdr_buf + LOG_FILE_WAS_CREATED_BY_HOT_BACKUP, + ' ', 4); + /* Write to the log file to wipe over the label */ + fil_io(OS_FILE_WRITE | OS_FILE_LOG, TRUE, + max_cp_group->space_id, 0, + 0, 0, OS_FILE_LOG_BLOCK_SIZE, + log_hdr_buf, max_cp_group); + } + +#ifdef UNIV_LOG_ARCHIVE + group = UT_LIST_GET_FIRST(log_sys->log_groups); + + while (group) { + log_checkpoint_get_nth_group_info(buf, group->id, + &(group->archived_file_no), + &(group->archived_offset)); + + group = UT_LIST_GET_NEXT(log_groups, group); + } +#endif /* UNIV_LOG_ARCHIVE */ + + if (TYPE_CHECKPOINT) { + /* Start reading the log groups from the checkpoint lsn up. The + variable contiguous_lsn contains an lsn up to which the log is + known to be contiguously written to all log groups. */ + + recv_sys->parse_start_lsn = checkpoint_lsn; + recv_sys->scanned_lsn = checkpoint_lsn; + recv_sys->scanned_checkpoint_no = 0; + recv_sys->recovered_lsn = checkpoint_lsn; + + srv_start_lsn = checkpoint_lsn; + } + + contiguous_lsn = ut_uint64_align_down(recv_sys->scanned_lsn, + OS_FILE_LOG_BLOCK_SIZE); + if (TYPE_CHECKPOINT) { + up_to_date_group = max_cp_group; +#ifdef UNIV_LOG_ARCHIVE + } else { + ulint capacity; + + /* Try to recover the remaining part from logs: first from + the logs of the archived group */ + + group = recv_sys->archive_group; + capacity = log_group_get_capacity(group); + + if (recv_sys->scanned_lsn > checkpoint_lsn + capacity + || checkpoint_lsn > recv_sys->scanned_lsn + capacity) { + + mutex_exit(&(log_sys->mutex)); + + /* The group does not contain enough log: probably + an archived log file was missing or corrupt */ + + return(DB_ERROR); + } + + recv_group_scan_log_recs(group, &contiguous_lsn, + &group_scanned_lsn); + if (recv_sys->scanned_lsn < checkpoint_lsn) { + + mutex_exit(&(log_sys->mutex)); + + /* The group did not contain enough log: an archived + log file was missing or invalid, or the log group + was corrupt */ + + return(DB_ERROR); + } + + group->scanned_lsn = group_scanned_lsn; + up_to_date_group = group; +#endif /* UNIV_LOG_ARCHIVE */ + } + + ut_ad(RECV_SCAN_SIZE <= log_sys->buf_size); + + group = UT_LIST_GET_FIRST(log_sys->log_groups); + +#ifdef UNIV_LOG_ARCHIVE + if ((type == LOG_ARCHIVE) && (group == recv_sys->archive_group)) { + group = UT_LIST_GET_NEXT(log_groups, group); + } +#endif /* UNIV_LOG_ARCHIVE */ + + /* Set the flag to publish that we are doing startup scan. */ + recv_log_scan_is_startup_type = TYPE_CHECKPOINT; + while (group) { + old_scanned_lsn = recv_sys->scanned_lsn; + + recv_group_scan_log_recs(group, &contiguous_lsn, + &group_scanned_lsn); + group->scanned_lsn = group_scanned_lsn; + + if (old_scanned_lsn < group_scanned_lsn) { + /* We found a more up-to-date group */ + + up_to_date_group = group; + } + +#ifdef UNIV_LOG_ARCHIVE + if ((type == LOG_ARCHIVE) + && (group == recv_sys->archive_group)) { + group = UT_LIST_GET_NEXT(log_groups, group); + } +#endif /* UNIV_LOG_ARCHIVE */ + + group = UT_LIST_GET_NEXT(log_groups, group); + } + + /* Done with startup scan. Clear the flag. */ + recv_log_scan_is_startup_type = FALSE; + if (TYPE_CHECKPOINT) { + /* NOTE: we always do a 'recovery' at startup, but only if + there is something wrong we will print a message to the + user about recovery: */ + + if (checkpoint_lsn != max_flushed_lsn + || checkpoint_lsn != min_flushed_lsn) { + + if (checkpoint_lsn < max_flushed_lsn) { + fprintf(stderr, + "InnoDB: #########################" + "#################################\n" + "InnoDB: " + "WARNING!\n" + "InnoDB: The log sequence number" + " in ibdata files is higher\n" + "InnoDB: than the log sequence number" + " in the ib_logfiles! Are you sure\n" + "InnoDB: you are using the right" + " ib_logfiles to start up" + " the database?\n" + "InnoDB: Log sequence number in" + " ib_logfiles is %llu, log\n" + "InnoDB: sequence numbers stamped" + " to ibdata file headers are between\n" + "InnoDB: %llu and %llu.\n" + "InnoDB: #########################" + "#################################\n", + checkpoint_lsn, + min_flushed_lsn, + max_flushed_lsn); + } + + if (!recv_needed_recovery) { + fprintf(stderr, + "InnoDB: The log sequence number" + " in ibdata files does not match\n" + "InnoDB: the log sequence number" + " in the ib_logfiles!\n"); + recv_init_crash_recovery(); + } + } + + if (!recv_needed_recovery) { + /* Init the doublewrite buffer memory structure */ + trx_sys_doublewrite_init_or_restore_pages(FALSE); + } + } + + /* We currently have only one log group */ + if (group_scanned_lsn < checkpoint_lsn) { + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: ERROR: We were only able to scan the log" + " up to\n" + "InnoDB: %llu, but a checkpoint was at %llu.\n" + "InnoDB: It is possible that" + " the database is now corrupt!\n", + group_scanned_lsn, + checkpoint_lsn); + } + + if (group_scanned_lsn < recv_max_page_lsn) { + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: ERROR: We were only able to scan the log" + " up to %llu\n" + "InnoDB: but a database page a had an lsn %llu." + " It is possible that the\n" + "InnoDB: database is now corrupt!\n", + group_scanned_lsn, + recv_max_page_lsn); + } + + if (recv_sys->recovered_lsn < checkpoint_lsn) { + + mutex_exit(&(log_sys->mutex)); + + if (recv_sys->recovered_lsn >= LIMIT_LSN) { + + return(DB_SUCCESS); + } + + ut_error; + + return(DB_ERROR); + } + + /* Synchronize the uncorrupted log groups to the most up-to-date log + group; we also copy checkpoint info to groups */ + + log_sys->next_checkpoint_lsn = checkpoint_lsn; + log_sys->next_checkpoint_no = checkpoint_no + 1; + +#ifdef UNIV_LOG_ARCHIVE + log_sys->archived_lsn = archived_lsn; +#endif /* UNIV_LOG_ARCHIVE */ + + recv_synchronize_groups(up_to_date_group); + + if (!recv_needed_recovery) { + ut_a(checkpoint_lsn == recv_sys->recovered_lsn); + } else { + srv_start_lsn = recv_sys->recovered_lsn; + } + + log_sys->lsn = recv_sys->recovered_lsn; + + ut_memcpy(log_sys->buf, recv_sys->last_block, OS_FILE_LOG_BLOCK_SIZE); + + log_sys->buf_free = (ulint) log_sys->lsn % OS_FILE_LOG_BLOCK_SIZE; + log_sys->buf_next_to_write = log_sys->buf_free; + log_sys->written_to_some_lsn = log_sys->lsn; + log_sys->written_to_all_lsn = log_sys->lsn; + + log_sys->last_checkpoint_lsn = checkpoint_lsn; + + log_sys->next_checkpoint_no = checkpoint_no + 1; + +#ifdef UNIV_LOG_ARCHIVE + if (archived_lsn == IB_ULONGLONG_MAX) { + + log_sys->archiving_state = LOG_ARCH_OFF; + } +#endif /* UNIV_LOG_ARCHIVE */ + + mutex_enter(&(recv_sys->mutex)); + + recv_sys->apply_log_recs = TRUE; + + mutex_exit(&(recv_sys->mutex)); + + mutex_exit(&(log_sys->mutex)); + + recv_lsn_checks_on = TRUE; + + /* The database is now ready to start almost normal processing of user + transactions: transaction rollbacks and the application of the log + records in the hash table can be run in background. */ + + return(DB_SUCCESS); + +#undef TYPE_CHECKPOINT +#undef LIMIT_LSN +} + +/************************************************************ +Completes recovery from a checkpoint. */ +UNIV_INTERN +void +recv_recovery_from_checkpoint_finish(void) +/*======================================*/ +{ + int i; + + /* Apply the hashed log records to the respective file pages */ + + if (srv_force_recovery < SRV_FORCE_NO_LOG_REDO) { + + recv_apply_hashed_log_recs(TRUE); + } + +#ifdef UNIV_DEBUG + if (log_debug_writes) { + fprintf(stderr, + "InnoDB: Log records applied to the database\n"); + } +#endif /* UNIV_DEBUG */ + + if (recv_needed_recovery) { + trx_sys_print_mysql_master_log_pos(); + trx_sys_print_mysql_binlog_offset(); + } + + if (recv_sys->found_corrupt_log) { + + fprintf(stderr, + "InnoDB: WARNING: the log file may have been" + " corrupt and it\n" + "InnoDB: is possible that the log scan or parsing" + " did not proceed\n" + "InnoDB: far enough in recovery. Please run" + " CHECK TABLE\n" + "InnoDB: on your InnoDB tables to check that" + " they are ok!\n" + "InnoDB: It may be safest to recover your" + " InnoDB database from\n" + "InnoDB: a backup!\n"); + } + + /* Free the resources of the recovery system */ + + recv_recovery_on = FALSE; + +#ifndef UNIV_LOG_DEBUG + recv_sys_free(); +#endif + + /* Drop partially created indexes. */ + row_merge_drop_temp_indexes(); + +#ifdef UNIV_SYNC_DEBUG + /* Wait for a while so that created threads have time to suspend + themselves before we switch the latching order checks on */ + os_thread_sleep(1000000); + + /* Switch latching order checks on in sync0sync.c */ + sync_order_checks_on = TRUE; +#endif + if (srv_force_recovery < SRV_FORCE_NO_TRX_UNDO) { + /* Rollback the uncommitted transactions which have no user + session */ + + os_thread_create(trx_rollback_or_clean_all_recovered, + (void *)&i, NULL); + } +} + +/********************************************************** +Resets the logs. The contents of log files will be lost! */ +UNIV_INTERN +void +recv_reset_logs( +/*============*/ + ib_uint64_t lsn, /* in: reset to this lsn + rounded up to be divisible by + OS_FILE_LOG_BLOCK_SIZE, after + which we add + LOG_BLOCK_HDR_SIZE */ +#ifdef UNIV_LOG_ARCHIVE + ulint arch_log_no, /* in: next archived log file number */ +#endif /* UNIV_LOG_ARCHIVE */ + ibool new_logs_created)/* in: TRUE if resetting logs + is done at the log creation; + FALSE if it is done after + archive recovery */ +{ + log_group_t* group; + + ut_ad(mutex_own(&(log_sys->mutex))); + + log_sys->lsn = ut_uint64_align_up(lsn, OS_FILE_LOG_BLOCK_SIZE); + + group = UT_LIST_GET_FIRST(log_sys->log_groups); + + while (group) { + group->lsn = log_sys->lsn; + group->lsn_offset = LOG_FILE_HDR_SIZE; +#ifdef UNIV_LOG_ARCHIVE + group->archived_file_no = arch_log_no; + group->archived_offset = 0; +#endif /* UNIV_LOG_ARCHIVE */ + + if (!new_logs_created) { + recv_truncate_group(group, group->lsn, group->lsn, + group->lsn, group->lsn); + } + + group = UT_LIST_GET_NEXT(log_groups, group); + } + + log_sys->buf_next_to_write = 0; + log_sys->written_to_some_lsn = log_sys->lsn; + log_sys->written_to_all_lsn = log_sys->lsn; + + log_sys->next_checkpoint_no = 0; + log_sys->last_checkpoint_lsn = 0; + +#ifdef UNIV_LOG_ARCHIVE + log_sys->archived_lsn = log_sys->lsn; +#endif /* UNIV_LOG_ARCHIVE */ + + log_block_init(log_sys->buf, log_sys->lsn); + log_block_set_first_rec_group(log_sys->buf, LOG_BLOCK_HDR_SIZE); + + log_sys->buf_free = LOG_BLOCK_HDR_SIZE; + log_sys->lsn += LOG_BLOCK_HDR_SIZE; + + mutex_exit(&(log_sys->mutex)); + + /* Reset the checkpoint fields in logs */ + + log_make_checkpoint_at(IB_ULONGLONG_MAX, TRUE); + log_make_checkpoint_at(IB_ULONGLONG_MAX, TRUE); + + mutex_enter(&(log_sys->mutex)); +} + +#ifdef UNIV_HOTBACKUP +/********************************************************** +Creates new log files after a backup has been restored. */ +UNIV_INTERN +void +recv_reset_log_files_for_backup( +/*============================*/ + const char* log_dir, /* in: log file directory path */ + ulint n_log_files, /* in: number of log files */ + ulint log_file_size, /* in: log file size */ + ib_uint64_t lsn) /* in: new start lsn, must be + divisible by OS_FILE_LOG_BLOCK_SIZE */ +{ + os_file_t log_file; + ibool success; + byte* buf; + ulint i; + ulint log_dir_len; + char name[5000]; + static const char ib_logfile_basename[] = "ib_logfile"; + + log_dir_len = strlen(log_dir); + /* full path name of ib_logfile consists of log dir path + basename + + number. This must fit in the name buffer. + */ + ut_a(log_dir_len + strlen(ib_logfile_basename) + 11 < sizeof(name)); + + buf = ut_malloc(LOG_FILE_HDR_SIZE + OS_FILE_LOG_BLOCK_SIZE); + memset(buf, '\0', LOG_FILE_HDR_SIZE + OS_FILE_LOG_BLOCK_SIZE); + + for (i = 0; i < n_log_files; i++) { + + sprintf(name, "%s%s%lu", log_dir, + ib_logfile_basename, (ulong)i); + + log_file = os_file_create_simple(name, OS_FILE_CREATE, + OS_FILE_READ_WRITE, &success); + if (!success) { + fprintf(stderr, + "InnoDB: Cannot create %s. Check that" + " the file does not exist yet.\n", name); + + exit(1); + } + + fprintf(stderr, + "Setting log file size to %lu %lu\n", + (ulong) ut_get_high32(log_file_size), + (ulong) log_file_size & 0xFFFFFFFFUL); + + success = os_file_set_size(name, log_file, + log_file_size & 0xFFFFFFFFUL, + ut_get_high32(log_file_size)); + + if (!success) { + fprintf(stderr, + "InnoDB: Cannot set %s size to %lu %lu\n", + name, (ulong) ut_get_high32(log_file_size), + (ulong) (log_file_size & 0xFFFFFFFFUL)); + exit(1); + } + + os_file_flush(log_file); + os_file_close(log_file); + } + + /* We pretend there is a checkpoint at lsn + LOG_BLOCK_HDR_SIZE */ + + log_reset_first_header_and_checkpoint(buf, lsn); + + log_block_init_in_old_format(buf + LOG_FILE_HDR_SIZE, lsn); + log_block_set_first_rec_group(buf + LOG_FILE_HDR_SIZE, + LOG_BLOCK_HDR_SIZE); + sprintf(name, "%s%s%lu", log_dir, ib_logfile_basename, (ulong)0); + + log_file = os_file_create_simple(name, OS_FILE_OPEN, + OS_FILE_READ_WRITE, &success); + if (!success) { + fprintf(stderr, "InnoDB: Cannot open %s.\n", name); + + exit(1); + } + + os_file_write(name, log_file, buf, 0, 0, + LOG_FILE_HDR_SIZE + OS_FILE_LOG_BLOCK_SIZE); + os_file_flush(log_file); + os_file_close(log_file); + + ut_free(buf); +} +#endif /* UNIV_HOTBACKUP */ + +#ifdef UNIV_LOG_ARCHIVE +/********************************************************** +Reads from the archive of a log group and performs recovery. */ +static +ibool +log_group_recover_from_archive_file( +/*================================*/ + /* out: TRUE if no more complete + consistent archive files */ + log_group_t* group) /* in: log group */ +{ + os_file_t file_handle; + ib_uint64_t start_lsn; + ib_uint64_t file_end_lsn; + ib_uint64_t dummy_lsn; + ib_uint64_t scanned_lsn; + ulint len; + ibool ret; + byte* buf; + ulint read_offset; + ulint file_size; + ulint file_size_high; + int input_char; + char name[10000]; + + ut_a(0); + +try_open_again: + buf = log_sys->buf; + + /* Add the file to the archive file space; open the file */ + + log_archived_file_name_gen(name, group->id, group->archived_file_no); + + file_handle = os_file_create(name, OS_FILE_OPEN, + OS_FILE_LOG, OS_FILE_AIO, &ret); + + if (ret == FALSE) { +ask_again: + fprintf(stderr, + "InnoDB: Do you want to copy additional" + " archived log files\n" + "InnoDB: to the directory\n"); + fprintf(stderr, + "InnoDB: or were these all the files needed" + " in recovery?\n"); + fprintf(stderr, + "InnoDB: (Y == copy more files; N == this is all)?"); + + input_char = getchar(); + + if (input_char == (int) 'N') { + + return(TRUE); + } else if (input_char == (int) 'Y') { + + goto try_open_again; + } else { + goto ask_again; + } + } + + ret = os_file_get_size(file_handle, &file_size, &file_size_high); + ut_a(ret); + + ut_a(file_size_high == 0); + + fprintf(stderr, "InnoDB: Opened archived log file %s\n", name); + + ret = os_file_close(file_handle); + + if (file_size < LOG_FILE_HDR_SIZE) { + fprintf(stderr, + "InnoDB: Archive file header incomplete %s\n", name); + + return(TRUE); + } + + ut_a(ret); + + /* Add the archive file as a node to the space */ + + fil_node_create(name, 1 + file_size / UNIV_PAGE_SIZE, + group->archive_space_id, FALSE); +#if RECV_SCAN_SIZE < LOG_FILE_HDR_SIZE +# error "RECV_SCAN_SIZE < LOG_FILE_HDR_SIZE" +#endif + + /* Read the archive file header */ + fil_io(OS_FILE_READ | OS_FILE_LOG, TRUE, group->archive_space_id, 0, 0, + LOG_FILE_HDR_SIZE, buf, NULL); + + /* Check if the archive file header is consistent */ + + if (mach_read_from_4(buf + LOG_GROUP_ID) != group->id + || mach_read_from_4(buf + LOG_FILE_NO) + != group->archived_file_no) { + fprintf(stderr, + "InnoDB: Archive file header inconsistent %s\n", name); + + return(TRUE); + } + + if (!mach_read_from_4(buf + LOG_FILE_ARCH_COMPLETED)) { + fprintf(stderr, + "InnoDB: Archive file not completely written %s\n", + name); + + return(TRUE); + } + + start_lsn = mach_read_ull(buf + LOG_FILE_START_LSN); + file_end_lsn = mach_read_ull(buf + LOG_FILE_END_LSN); + + if (!recv_sys->scanned_lsn) { + + if (recv_sys->parse_start_lsn < start_lsn) { + fprintf(stderr, + "InnoDB: Archive log file %s" + " starts from too big a lsn\n", + name); + return(TRUE); + } + + recv_sys->scanned_lsn = start_lsn; + } + + if (recv_sys->scanned_lsn != start_lsn) { + + fprintf(stderr, + "InnoDB: Archive log file %s starts from" + " a wrong lsn\n", + name); + return(TRUE); + } + + read_offset = LOG_FILE_HDR_SIZE; + + for (;;) { + len = RECV_SCAN_SIZE; + + if (read_offset + len > file_size) { + len = ut_calc_align_down(file_size - read_offset, + OS_FILE_LOG_BLOCK_SIZE); + } + + if (len == 0) { + + break; + } + +#ifdef UNIV_DEBUG + if (log_debug_writes) { + fprintf(stderr, + "InnoDB: Archive read starting at" + " lsn %llu, len %lu from file %s\n", + start_lsn, + (ulong) len, name); + } +#endif /* UNIV_DEBUG */ + + fil_io(OS_FILE_READ | OS_FILE_LOG, TRUE, + group->archive_space_id, read_offset / UNIV_PAGE_SIZE, + read_offset % UNIV_PAGE_SIZE, len, buf, NULL); + + ret = recv_scan_log_recs( + TRUE, (buf_pool->n_frames - recv_n_pool_free_frames) + * UNIV_PAGE_SIZE, TRUE, buf, len, start_lsn, + &dummy_lsn, &scanned_lsn); + + if (scanned_lsn == file_end_lsn) { + + return(FALSE); + } + + if (ret) { + fprintf(stderr, + "InnoDB: Archive log file %s" + " does not scan right\n", + name); + return(TRUE); + } + + read_offset += len; + start_lsn += len; + + ut_ad(start_lsn == scanned_lsn); + } + + return(FALSE); +} + +/************************************************************ +Recovers from archived log files, and also from log files, if they exist. */ +UNIV_INTERN +ulint +recv_recovery_from_archive_start( +/*=============================*/ + /* out: error code or DB_SUCCESS */ + ib_uint64_t min_flushed_lsn,/* in: min flushed lsn field from the + data files */ + ib_uint64_t limit_lsn, /* in: recover up to this lsn if + possible */ + ulint first_log_no) /* in: number of the first archived + log file to use in the recovery; the + file will be searched from + INNOBASE_LOG_ARCH_DIR specified in + server config file */ +{ + log_group_t* group; + ulint group_id; + ulint trunc_len; + ibool ret; + ulint err; + + ut_a(0); + + recv_sys_create(); + recv_sys_init(FALSE, buf_pool_get_curr_size()); + + recv_recovery_on = TRUE; + recv_recovery_from_backup_on = TRUE; + + recv_sys->limit_lsn = limit_lsn; + + group_id = 0; + + group = UT_LIST_GET_FIRST(log_sys->log_groups); + + while (group) { + if (group->id == group_id) { + + break; + } + + group = UT_LIST_GET_NEXT(log_groups, group); + } + + if (!group) { + fprintf(stderr, + "InnoDB: There is no log group defined with id %lu!\n", + (ulong) group_id); + return(DB_ERROR); + } + + group->archived_file_no = first_log_no; + + recv_sys->parse_start_lsn = min_flushed_lsn; + + recv_sys->scanned_lsn = 0; + recv_sys->scanned_checkpoint_no = 0; + recv_sys->recovered_lsn = recv_sys->parse_start_lsn; + + recv_sys->archive_group = group; + + ret = FALSE; + + mutex_enter(&(log_sys->mutex)); + + while (!ret) { + ret = log_group_recover_from_archive_file(group); + + /* Close and truncate a possible processed archive file + from the file space */ + + trunc_len = UNIV_PAGE_SIZE + * fil_space_get_size(group->archive_space_id); + if (trunc_len > 0) { + fil_space_truncate_start(group->archive_space_id, + trunc_len); + } + + group->archived_file_no++; + } + + if (recv_sys->recovered_lsn < limit_lsn) { + + if (!recv_sys->scanned_lsn) { + + recv_sys->scanned_lsn = recv_sys->parse_start_lsn; + } + + mutex_exit(&(log_sys->mutex)); + + err = recv_recovery_from_checkpoint_start(LOG_ARCHIVE, + limit_lsn, + IB_ULONGLONG_MAX, + IB_ULONGLONG_MAX); + if (err != DB_SUCCESS) { + + return(err); + } + + mutex_enter(&(log_sys->mutex)); + } + + if (limit_lsn != IB_ULONGLONG_MAX) { + + recv_apply_hashed_log_recs(FALSE); + + recv_reset_logs(recv_sys->recovered_lsn, 0, FALSE); + } + + mutex_exit(&(log_sys->mutex)); + + return(DB_SUCCESS); +} + +/************************************************************ +Completes recovery from archive. */ +UNIV_INTERN +void +recv_recovery_from_archive_finish(void) +/*===================================*/ +{ + recv_recovery_from_checkpoint_finish(); + + recv_recovery_from_backup_on = FALSE; +} +#endif /* UNIV_LOG_ARCHIVE */ === added directory 'storage/xtradb/mach' === added file 'storage/xtradb/mach/mach0data.c' --- a/storage/xtradb/mach/mach0data.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/mach/mach0data.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,135 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/********************************************************************** +Utilities for converting data from the database file +to the machine format. + +Created 11/28/1995 Heikki Tuuri +***********************************************************************/ + +#include "mach0data.h" + +#ifdef UNIV_NONINL +#include "mach0data.ic" +#endif + +/************************************************************* +Reads a ulint in a compressed form if the log record fully contains it. */ +UNIV_INTERN +byte* +mach_parse_compressed( +/*==================*/ + /* out: pointer to end of the stored field, NULL if + not complete */ + byte* ptr, /* in: pointer to buffer from where to read */ + byte* end_ptr,/* in: pointer to end of the buffer */ + ulint* val) /* out: read value (< 2^32) */ +{ + ulint flag; + + ut_ad(ptr && end_ptr && val); + + if (ptr >= end_ptr) { + + return(NULL); + } + + flag = mach_read_from_1(ptr); + + if (flag < 0x80UL) { + *val = flag; + return(ptr + 1); + + } else if (flag < 0xC0UL) { + if (end_ptr < ptr + 2) { + return(NULL); + } + + *val = mach_read_from_2(ptr) & 0x7FFFUL; + + return(ptr + 2); + + } else if (flag < 0xE0UL) { + if (end_ptr < ptr + 3) { + return(NULL); + } + + *val = mach_read_from_3(ptr) & 0x3FFFFFUL; + + return(ptr + 3); + } else if (flag < 0xF0UL) { + if (end_ptr < ptr + 4) { + return(NULL); + } + + *val = mach_read_from_4(ptr) & 0x1FFFFFFFUL; + + return(ptr + 4); + } else { + ut_ad(flag == 0xF0UL); + + if (end_ptr < ptr + 5) { + return(NULL); + } + + *val = mach_read_from_4(ptr + 1); + return(ptr + 5); + } +} + +/************************************************************* +Reads a dulint in a compressed form if the log record fully contains it. */ +UNIV_INTERN +byte* +mach_dulint_parse_compressed( +/*=========================*/ + /* out: pointer to end of the stored field, NULL if + not complete */ + byte* ptr, /* in: pointer to buffer from where to read */ + byte* end_ptr,/* in: pointer to end of the buffer */ + dulint* val) /* out: read value */ +{ + ulint high; + ulint low; + ulint size; + + ut_ad(ptr && end_ptr && val); + + if (end_ptr < ptr + 5) { + + return(NULL); + } + + high = mach_read_compressed(ptr); + + size = mach_get_compressed_size(high); + + ptr += size; + + if (end_ptr < ptr + 4) { + + return(NULL); + } + + low = mach_read_from_4(ptr); + + *val = ut_dulint_create(high, low); + + return(ptr + 4); +} === added directory 'storage/xtradb/mem' === added file 'storage/xtradb/mem/mem0dbg.c' --- a/storage/xtradb/mem/mem0dbg.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/mem/mem0dbg.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,1014 @@ +/***************************************************************************** + +Copyright (c) 1994, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/************************************************************************ +The memory management: the debug code. This is not a compilation module, +but is included in mem0mem.* ! + +Created 6/9/1994 Heikki Tuuri +*************************************************************************/ + +#ifdef UNIV_MEM_DEBUG +/* The mutex which protects in the debug version the hash table +containing the list of live memory heaps, and also the global +variables below. */ +UNIV_INTERN mutex_t mem_hash_mutex; + +/* The following variables contain information about the +extent of memory allocations. Only used in the debug version. +Protected by mem_hash_mutex above. */ + +static ulint mem_n_created_heaps = 0; +static ulint mem_n_allocations = 0; +static ulint mem_total_allocated_memory = 0; +UNIV_INTERN ulint mem_current_allocated_memory = 0; +static ulint mem_max_allocated_memory = 0; +static ulint mem_last_print_info = 0; + +/* Size of the hash table for memory management tracking */ +#define MEM_HASH_SIZE 997 + +/* The node of the list containing currently allocated memory heaps */ + +typedef struct mem_hash_node_struct mem_hash_node_t; +struct mem_hash_node_struct { + UT_LIST_NODE_T(mem_hash_node_t) + list; /* hash list node */ + mem_heap_t* heap; /* memory heap */ + const char* file_name;/* file where heap was created*/ + ulint line; /* file line of creation */ + ulint nth_heap;/* this is the nth heap created */ + UT_LIST_NODE_T(mem_hash_node_t) + all_list;/* list of all created heaps */ +}; + +typedef UT_LIST_BASE_NODE_T(mem_hash_node_t) mem_hash_cell_t; + +/* The hash table of allocated heaps */ +static mem_hash_cell_t mem_hash_table[MEM_HASH_SIZE]; + +/* The base node of the list of all allocated heaps */ +static mem_hash_cell_t mem_all_list_base; + +static ibool mem_hash_initialized = FALSE; + + +UNIV_INLINE +mem_hash_cell_t* +mem_hash_get_nth_cell(ulint i); + +/* Accessor function for the hash table. Returns a pointer to the +table cell. */ +UNIV_INLINE +mem_hash_cell_t* +mem_hash_get_nth_cell(ulint i) +{ + ut_a(i < MEM_HASH_SIZE); + + return(&(mem_hash_table[i])); +} + +/* Accessor functions for a memory field in the debug version */ +UNIV_INTERN +void +mem_field_header_set_len(byte* field, ulint len) +{ + mach_write_to_4(field - 2 * sizeof(ulint), len); +} + +UNIV_INTERN +ulint +mem_field_header_get_len(byte* field) +{ + return(mach_read_from_4(field - 2 * sizeof(ulint))); +} + +UNIV_INTERN +void +mem_field_header_set_check(byte* field, ulint check) +{ + mach_write_to_4(field - sizeof(ulint), check); +} + +UNIV_INTERN +ulint +mem_field_header_get_check(byte* field) +{ + return(mach_read_from_4(field - sizeof(ulint))); +} + +UNIV_INTERN +void +mem_field_trailer_set_check(byte* field, ulint check) +{ + mach_write_to_4(field + mem_field_header_get_len(field), check); +} + +UNIV_INTERN +ulint +mem_field_trailer_get_check(byte* field) +{ + return(mach_read_from_4(field + + mem_field_header_get_len(field))); +} +#endif /* UNIV_MEM_DEBUG */ + +/********************************************************************** +Initializes the memory system. */ +UNIV_INTERN +void +mem_init( +/*=====*/ + ulint size) /* in: common pool size in bytes */ +{ +#ifdef UNIV_MEM_DEBUG + + ulint i; + + /* Initialize the hash table */ + ut_a(FALSE == mem_hash_initialized); + + mutex_create(&mem_hash_mutex, SYNC_MEM_HASH); + + for (i = 0; i < MEM_HASH_SIZE; i++) { + UT_LIST_INIT(*mem_hash_get_nth_cell(i)); + } + + UT_LIST_INIT(mem_all_list_base); + + mem_hash_initialized = TRUE; +#endif + + if (UNIV_LIKELY(srv_use_sys_malloc)) { + /* When innodb_use_sys_malloc is set, the + mem_comm_pool won't be used for any allocations. We + create a dummy mem_comm_pool, because some statistics + and debugging code relies on it being initialized. */ + size = 1; + } + + mem_comm_pool = mem_pool_create(size); +} + +#ifdef UNIV_MEM_DEBUG +/********************************************************************** +Initializes an allocated memory field in the debug version. */ +UNIV_INTERN +void +mem_field_init( +/*===========*/ + byte* buf, /* in: memory field */ + ulint n) /* in: how many bytes the user requested */ +{ + ulint rnd; + byte* usr_buf; + + usr_buf = buf + MEM_FIELD_HEADER_SIZE; + + /* In the debug version write the length field and the + check fields to the start and the end of the allocated storage. + The field header consists of a length field and + a random number field, in this order. The field trailer contains + the same random number as a check field. */ + + mem_field_header_set_len(usr_buf, n); + + rnd = ut_rnd_gen_ulint(); + + mem_field_header_set_check(usr_buf, rnd); + mem_field_trailer_set_check(usr_buf, rnd); + + /* Update the memory allocation information */ + + mutex_enter(&mem_hash_mutex); + + mem_total_allocated_memory += n; + mem_current_allocated_memory += n; + mem_n_allocations++; + + if (mem_current_allocated_memory > mem_max_allocated_memory) { + mem_max_allocated_memory = mem_current_allocated_memory; + } + + mutex_exit(&mem_hash_mutex); + + /* In the debug version set the buffer to a random + combination of 0xBA and 0xBE */ + + mem_init_buf(usr_buf, n); +} + +/********************************************************************** +Erases an allocated memory field in the debug version. */ +UNIV_INTERN +void +mem_field_erase( +/*============*/ + byte* buf, /* in: memory field */ + ulint n __attribute__((unused))) + /* in: how many bytes the user requested */ +{ + byte* usr_buf; + + usr_buf = buf + MEM_FIELD_HEADER_SIZE; + + mutex_enter(&mem_hash_mutex); + mem_current_allocated_memory -= n; + mutex_exit(&mem_hash_mutex); + + /* Check that the field lengths agree */ + ut_ad(n == (ulint)mem_field_header_get_len(usr_buf)); + + /* In the debug version, set the freed space to a random + combination of 0xDE and 0xAD */ + + mem_erase_buf(buf, MEM_SPACE_NEEDED(n)); +} + +/******************************************************************* +Initializes a buffer to a random combination of hex BA and BE. +Used to initialize allocated memory. */ +UNIV_INTERN +void +mem_init_buf( +/*=========*/ + byte* buf, /* in: pointer to buffer */ + ulint n) /* in: length of buffer */ +{ + byte* ptr; + + UNIV_MEM_ASSERT_W(buf, n); + + for (ptr = buf; ptr < buf + n; ptr++) { + + if (ut_rnd_gen_ibool()) { + *ptr = 0xBA; + } else { + *ptr = 0xBE; + } + } + + UNIV_MEM_INVALID(buf, n); +} + +/******************************************************************* +Initializes a buffer to a random combination of hex DE and AD. +Used to erase freed memory.*/ +UNIV_INTERN +void +mem_erase_buf( +/*==========*/ + byte* buf, /* in: pointer to buffer */ + ulint n) /* in: length of buffer */ +{ + byte* ptr; + + UNIV_MEM_ASSERT_W(buf, n); + + for (ptr = buf; ptr < buf + n; ptr++) { + if (ut_rnd_gen_ibool()) { + *ptr = 0xDE; + } else { + *ptr = 0xAD; + } + } + + UNIV_MEM_FREE(buf, n); +} + +/******************************************************************* +Inserts a created memory heap to the hash table of current allocated +memory heaps. */ +UNIV_INTERN +void +mem_hash_insert( +/*============*/ + mem_heap_t* heap, /* in: the created heap */ + const char* file_name, /* in: file name of creation */ + ulint line) /* in: line where created */ +{ + mem_hash_node_t* new_node; + ulint cell_no ; + + ut_ad(mem_heap_check(heap)); + + mutex_enter(&mem_hash_mutex); + + cell_no = ut_hash_ulint((ulint)heap, MEM_HASH_SIZE); + + /* Allocate a new node to the list */ + new_node = ut_malloc(sizeof(mem_hash_node_t)); + + new_node->heap = heap; + new_node->file_name = file_name; + new_node->line = line; + new_node->nth_heap = mem_n_created_heaps; + + /* Insert into lists */ + UT_LIST_ADD_FIRST(list, *mem_hash_get_nth_cell(cell_no), new_node); + + UT_LIST_ADD_LAST(all_list, mem_all_list_base, new_node); + + mem_n_created_heaps++; + + mutex_exit(&mem_hash_mutex); +} + +/******************************************************************* +Removes a memory heap (which is going to be freed by the caller) +from the list of live memory heaps. Returns the size of the heap +in terms of how much memory in bytes was allocated for the user of +the heap (not the total space occupied by the heap). +Also validates the heap. +NOTE: This function does not free the storage occupied by the +heap itself, only the node in the list of heaps. */ +UNIV_INTERN +void +mem_hash_remove( +/*============*/ + mem_heap_t* heap, /* in: the heap to be freed */ + const char* file_name, /* in: file name of freeing */ + ulint line) /* in: line where freed */ +{ + mem_hash_node_t* node; + ulint cell_no; + ibool error; + ulint size; + + ut_ad(mem_heap_check(heap)); + + mutex_enter(&mem_hash_mutex); + + cell_no = ut_hash_ulint((ulint)heap, MEM_HASH_SIZE); + + /* Look for the heap in the hash table list */ + node = UT_LIST_GET_FIRST(*mem_hash_get_nth_cell(cell_no)); + + while (node != NULL) { + if (node->heap == heap) { + + break; + } + + node = UT_LIST_GET_NEXT(list, node); + } + + if (node == NULL) { + fprintf(stderr, + "Memory heap or buffer freed in %s line %lu" + " did not exist.\n", + file_name, (ulong) line); + ut_error; + } + + /* Remove from lists */ + UT_LIST_REMOVE(list, *mem_hash_get_nth_cell(cell_no), node); + + UT_LIST_REMOVE(all_list, mem_all_list_base, node); + + /* Validate the heap which will be freed */ + mem_heap_validate_or_print(node->heap, NULL, FALSE, &error, &size, + NULL, NULL); + if (error) { + fprintf(stderr, + "Inconsistency in memory heap or" + " buffer n:o %lu created\n" + "in %s line %lu and tried to free in %s line %lu.\n" + "Hex dump of 400 bytes around memory heap" + " first block start:\n", + node->nth_heap, node->file_name, (ulong) node->line, + file_name, (ulong) line); + ut_print_buf(stderr, (byte*)node->heap - 200, 400); + fputs("\nDump of the mem heap:\n", stderr); + mem_heap_validate_or_print(node->heap, NULL, TRUE, &error, + &size, NULL, NULL); + ut_error; + } + + /* Free the memory occupied by the node struct */ + ut_free(node); + + mem_current_allocated_memory -= size; + + mutex_exit(&mem_hash_mutex); +} +#endif /* UNIV_MEM_DEBUG */ + +#if defined UNIV_MEM_DEBUG || defined UNIV_DEBUG +/******************************************************************* +Checks a memory heap for consistency and prints the contents if requested. +Outputs the sum of sizes of buffers given to the user (only in +the debug version), the physical size of the heap and the number of +blocks in the heap. In case of error returns 0 as sizes and number +of blocks. */ +UNIV_INTERN +void +mem_heap_validate_or_print( +/*=======================*/ + mem_heap_t* heap, /* in: memory heap */ + byte* top __attribute__((unused)), + /* in: calculate and validate only until + this top pointer in the heap is reached, + if this pointer is NULL, ignored */ + ibool print, /* in: if TRUE, prints the contents + of the heap; works only in + the debug version */ + ibool* error, /* out: TRUE if error */ + ulint* us_size,/* out: allocated memory + (for the user) in the heap, + if a NULL pointer is passed as this + argument, it is ignored; in the + non-debug version this is always -1 */ + ulint* ph_size,/* out: physical size of the heap, + if a NULL pointer is passed as this + argument, it is ignored */ + ulint* n_blocks) /* out: number of blocks in the heap, + if a NULL pointer is passed as this + argument, it is ignored */ +{ + mem_block_t* block; + ulint total_len = 0; + ulint block_count = 0; + ulint phys_len = 0; +#ifdef UNIV_MEM_DEBUG + ulint len; + byte* field; + byte* user_field; + ulint check_field; +#endif + + /* Pessimistically, we set the parameters to error values */ + if (us_size != NULL) { + *us_size = 0; + } + if (ph_size != NULL) { + *ph_size = 0; + } + if (n_blocks != NULL) { + *n_blocks = 0; + } + *error = TRUE; + + block = heap; + + if (block->magic_n != MEM_BLOCK_MAGIC_N) { + return; + } + + if (print) { + fputs("Memory heap:", stderr); + } + + while (block != NULL) { + phys_len += mem_block_get_len(block); + + if ((block->type == MEM_HEAP_BUFFER) + && (mem_block_get_len(block) > UNIV_PAGE_SIZE)) { + + fprintf(stderr, + "InnoDB: Error: mem block %p" + " length %lu > UNIV_PAGE_SIZE\n", + (void*) block, + (ulong) mem_block_get_len(block)); + /* error */ + + return; + } + +#ifdef UNIV_MEM_DEBUG + /* We can trace the fields of the block only in the debug + version */ + if (print) { + fprintf(stderr, " Block %ld:", block_count); + } + + field = (byte*)block + mem_block_get_start(block); + + if (top && (field == top)) { + + goto completed; + } + + while (field < (byte*)block + mem_block_get_free(block)) { + + /* Calculate the pointer to the storage + which was given to the user */ + + user_field = field + MEM_FIELD_HEADER_SIZE; + + len = mem_field_header_get_len(user_field); + + if (print) { + ut_print_buf(stderr, user_field, len); + putc('\n', stderr); + } + + total_len += len; + check_field = mem_field_header_get_check(user_field); + + if (check_field + != mem_field_trailer_get_check(user_field)) { + /* error */ + + fprintf(stderr, + "InnoDB: Error: block %lx mem" + " field %lx len %lu\n" + "InnoDB: header check field is" + " %lx but trailer %lx\n", + (ulint)block, + (ulint)field, len, check_field, + mem_field_trailer_get_check( + user_field)); + + return; + } + + /* Move to next field */ + field = field + MEM_SPACE_NEEDED(len); + + if (top && (field == top)) { + + goto completed; + } + + } + + /* At the end check that we have arrived to the first free + position */ + + if (field != (byte*)block + mem_block_get_free(block)) { + /* error */ + + fprintf(stderr, + "InnoDB: Error: block %lx end of" + " mem fields %lx\n" + "InnoDB: but block free at %lx\n", + (ulint)block, (ulint)field, + (ulint)((byte*)block + + mem_block_get_free(block))); + + return; + } + +#endif + + block = UT_LIST_GET_NEXT(list, block); + block_count++; + } +#ifdef UNIV_MEM_DEBUG +completed: +#endif + if (us_size != NULL) { + *us_size = total_len; + } + if (ph_size != NULL) { + *ph_size = phys_len; + } + if (n_blocks != NULL) { + *n_blocks = block_count; + } + *error = FALSE; +} + +/****************************************************************** +Prints the contents of a memory heap. */ +static +void +mem_heap_print( +/*===========*/ + mem_heap_t* heap) /* in: memory heap */ +{ + ibool error; + ulint us_size; + ulint phys_size; + ulint n_blocks; + + ut_ad(mem_heap_check(heap)); + + mem_heap_validate_or_print(heap, NULL, TRUE, &error, + &us_size, &phys_size, &n_blocks); + fprintf(stderr, + "\nheap type: %lu; size: user size %lu;" + " physical size %lu; blocks %lu.\n", + (ulong) heap->type, (ulong) us_size, + (ulong) phys_size, (ulong) n_blocks); + ut_a(!error); +} + +/****************************************************************** +Validates the contents of a memory heap. */ +UNIV_INTERN +ibool +mem_heap_validate( +/*==============*/ + /* out: TRUE if ok */ + mem_heap_t* heap) /* in: memory heap */ +{ + ibool error; + ulint us_size; + ulint phys_size; + ulint n_blocks; + + ut_ad(mem_heap_check(heap)); + + mem_heap_validate_or_print(heap, NULL, FALSE, &error, &us_size, + &phys_size, &n_blocks); + if (error) { + mem_heap_print(heap); + } + + ut_a(!error); + + return(TRUE); +} +#endif /* UNIV_MEM_DEBUG || UNIV_DEBUG */ + +#ifdef UNIV_DEBUG +/****************************************************************** +Checks that an object is a memory heap (or a block of it). */ +UNIV_INTERN +ibool +mem_heap_check( +/*===========*/ + /* out: TRUE if ok */ + mem_heap_t* heap) /* in: memory heap */ +{ + ut_a(heap->magic_n == MEM_BLOCK_MAGIC_N); + + return(TRUE); +} +#endif /* UNIV_DEBUG */ + +#ifdef UNIV_MEM_DEBUG +/********************************************************************* +TRUE if no memory is currently allocated. */ +UNIV_INTERN +ibool +mem_all_freed(void) +/*===============*/ + /* out: TRUE if no heaps exist */ +{ + mem_hash_node_t* node; + ulint heap_count = 0; + ulint i; + + mem_validate(); + + mutex_enter(&mem_hash_mutex); + + for (i = 0; i < MEM_HASH_SIZE; i++) { + + node = UT_LIST_GET_FIRST(*mem_hash_get_nth_cell(i)); + while (node != NULL) { + heap_count++; + node = UT_LIST_GET_NEXT(list, node); + } + } + + mutex_exit(&mem_hash_mutex); + + if (heap_count == 0) { + + ut_a(mem_pool_get_reserved(mem_comm_pool) == 0); + + return(TRUE); + } else { + return(FALSE); + } +} + +/********************************************************************* +Validates the dynamic memory allocation system. */ +UNIV_INTERN +ibool +mem_validate_no_assert(void) +/*========================*/ + /* out: TRUE if error */ +{ + mem_hash_node_t* node; + ulint n_heaps = 0; + ulint allocated_mem; + ulint ph_size; + ulint total_allocated_mem = 0; + ibool error = FALSE; + ulint n_blocks; + ulint i; + + mem_pool_validate(mem_comm_pool); + + mutex_enter(&mem_hash_mutex); + + for (i = 0; i < MEM_HASH_SIZE; i++) { + + node = UT_LIST_GET_FIRST(*mem_hash_get_nth_cell(i)); + + while (node != NULL) { + n_heaps++; + + mem_heap_validate_or_print(node->heap, NULL, + FALSE, &error, + &allocated_mem, + &ph_size, &n_blocks); + + if (error) { + fprintf(stderr, + "\nERROR!!!!!!!!!!!!!!!!!!!" + "!!!!!!!!!!!!!!!!!!!!!!!\n\n" + "Inconsistency in memory heap" + " or buffer created\n" + "in %s line %lu.\n", + node->file_name, node->line); + + mutex_exit(&mem_hash_mutex); + + return(TRUE); + } + + total_allocated_mem += allocated_mem; + node = UT_LIST_GET_NEXT(list, node); + } + } + + if ((n_heaps == 0) && (mem_current_allocated_memory != 0)) { + error = TRUE; + } + + if (mem_total_allocated_memory < mem_current_allocated_memory) { + error = TRUE; + } + + if (mem_max_allocated_memory > mem_total_allocated_memory) { + error = TRUE; + } + + if (mem_n_created_heaps < n_heaps) { + error = TRUE; + } + + mutex_exit(&mem_hash_mutex); + + return(error); +} + +/**************************************************************** +Validates the dynamic memory */ +UNIV_INTERN +ibool +mem_validate(void) +/*==============*/ + /* out: TRUE if ok */ +{ + ut_a(!mem_validate_no_assert()); + + return(TRUE); +} +#endif /* UNIV_MEM_DEBUG */ + +/**************************************************************** +Tries to find neigboring memory allocation blocks and dumps to stderr +the neighborhood of a given pointer. */ +UNIV_INTERN +void +mem_analyze_corruption( +/*===================*/ + void* ptr) /* in: pointer to place of possible corruption */ +{ + byte* p; + ulint i; + ulint dist; + + fputs("InnoDB: Apparent memory corruption: mem dump ", stderr); + ut_print_buf(stderr, (byte*)ptr - 250, 500); + + fputs("\nInnoDB: Scanning backward trying to find" + " previous allocated mem blocks\n", stderr); + + p = (byte*)ptr; + dist = 0; + + for (i = 0; i < 10; i++) { + for (;;) { + if (((ulint)p) % 4 == 0) { + + if (*((ulint*)p) == MEM_BLOCK_MAGIC_N) { + fprintf(stderr, + "Mem block at - %lu," + " file %s, line %lu\n", + (ulong) dist, + (p + sizeof(ulint)), + (ulong) + (*(ulint*)(p + 8 + + sizeof(ulint)))); + + break; + } + + if (*((ulint*)p) == MEM_FREED_BLOCK_MAGIC_N) { + fprintf(stderr, + "Freed mem block at - %lu," + " file %s, line %lu\n", + (ulong) dist, + (p + sizeof(ulint)), + (ulong) + (*(ulint*)(p + 8 + + sizeof(ulint)))); + + break; + } + } + + p--; + dist++; + } + + p--; + dist++; + } + + fprintf(stderr, + "InnoDB: Scanning forward trying to find next" + " allocated mem blocks\n"); + + p = (byte*)ptr; + dist = 0; + + for (i = 0; i < 10; i++) { + for (;;) { + if (((ulint)p) % 4 == 0) { + + if (*((ulint*)p) == MEM_BLOCK_MAGIC_N) { + fprintf(stderr, + "Mem block at + %lu, file %s," + " line %lu\n", + (ulong) dist, + (p + sizeof(ulint)), + (ulong) + (*(ulint*)(p + 8 + + sizeof(ulint)))); + + break; + } + + if (*((ulint*)p) == MEM_FREED_BLOCK_MAGIC_N) { + fprintf(stderr, + "Freed mem block at + %lu," + " file %s, line %lu\n", + (ulong) dist, + (p + sizeof(ulint)), + (ulong) + (*(ulint*)(p + 8 + + sizeof(ulint)))); + + break; + } + } + + p++; + dist++; + } + + p++; + dist++; + } +} + +/********************************************************************* +Prints information of dynamic memory usage and currently allocated +memory heaps or buffers. Can only be used in the debug version. */ +static +void +mem_print_info_low( +/*===============*/ + ibool print_all) /* in: if TRUE, all heaps are printed, + else only the heaps allocated after the + previous call of this function */ +{ +#ifdef UNIV_MEM_DEBUG + mem_hash_node_t* node; + ulint n_heaps = 0; + ulint allocated_mem; + ulint ph_size; + ulint total_allocated_mem = 0; + ibool error; + ulint n_blocks; +#endif + FILE* outfile; + + /* outfile = fopen("ibdebug", "a"); */ + + outfile = stdout; + + fprintf(outfile, "\n"); + fprintf(outfile, + "________________________________________________________\n"); + fprintf(outfile, "MEMORY ALLOCATION INFORMATION\n\n"); + +#ifndef UNIV_MEM_DEBUG + + UT_NOT_USED(print_all); + + mem_pool_print_info(outfile, mem_comm_pool); + + fprintf(outfile, + "Sorry, non-debug version cannot give more memory info\n"); + + /* fclose(outfile); */ + + return; +#else + mutex_enter(&mem_hash_mutex); + + fprintf(outfile, "LIST OF CREATED HEAPS AND ALLOCATED BUFFERS: \n\n"); + + if (!print_all) { + fprintf(outfile, "AFTER THE LAST PRINT INFO\n"); + } + + node = UT_LIST_GET_FIRST(mem_all_list_base); + + while (node != NULL) { + n_heaps++; + + if (!print_all && node->nth_heap < mem_last_print_info) { + + goto next_heap; + } + + mem_heap_validate_or_print(node->heap, NULL, + FALSE, &error, &allocated_mem, + &ph_size, &n_blocks); + total_allocated_mem += allocated_mem; + + fprintf(outfile, + "%lu: file %s line %lu of size %lu phys.size %lu" + " with %lu blocks, type %lu\n", + node->nth_heap, node->file_name, node->line, + allocated_mem, ph_size, n_blocks, + (node->heap)->type); +next_heap: + node = UT_LIST_GET_NEXT(all_list, node); + } + + fprintf(outfile, "\n"); + + fprintf(outfile, "Current allocated memory : %lu\n", + mem_current_allocated_memory); + fprintf(outfile, "Current allocated heaps and buffers : %lu\n", + n_heaps); + fprintf(outfile, "Cumulative allocated memory : %lu\n", + mem_total_allocated_memory); + fprintf(outfile, "Maximum allocated memory : %lu\n", + mem_max_allocated_memory); + fprintf(outfile, "Cumulative created heaps and buffers : %lu\n", + mem_n_created_heaps); + fprintf(outfile, "Cumulative number of allocations : %lu\n", + mem_n_allocations); + + mem_last_print_info = mem_n_created_heaps; + + mutex_exit(&mem_hash_mutex); + + mem_pool_print_info(outfile, mem_comm_pool); + + /* mem_validate(); */ + + /* fclose(outfile); */ +#endif +} + +/********************************************************************* +Prints information of dynamic memory usage and currently allocated memory +heaps or buffers. Can only be used in the debug version. */ +UNIV_INTERN +void +mem_print_info(void) +/*================*/ +{ + mem_print_info_low(TRUE); +} + +/********************************************************************* +Prints information of dynamic memory usage and currently allocated memory +heaps or buffers since the last ..._print_info or..._print_new_info. */ +UNIV_INTERN +void +mem_print_new_info(void) +/*====================*/ +{ + mem_print_info_low(FALSE); +} === added file 'storage/xtradb/mem/mem0mem.c' --- a/storage/xtradb/mem/mem0mem.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/mem/mem0mem.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,553 @@ +/***************************************************************************** + +Copyright (c) 1994, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/************************************************************************ +The memory management + +Created 6/9/1994 Heikki Tuuri +*************************************************************************/ + +#include "mem0mem.h" +#ifdef UNIV_NONINL +#include "mem0mem.ic" +#endif + +#include "buf0buf.h" +#include "srv0srv.h" +#include "mem0dbg.c" +#include <stdarg.h> + +/* + THE MEMORY MANAGEMENT + ===================== + +The basic element of the memory management is called a memory +heap. A memory heap is conceptually a +stack from which memory can be allocated. The stack may grow infinitely. +The top element of the stack may be freed, or +the whole stack can be freed at one time. The advantage of the +memory heap concept is that we can avoid using the malloc and free +functions of C which are quite expensive, for example, on the Solaris + GCC +system (50 MHz Sparc, 1993) the pair takes 3 microseconds, +on Win NT + 100MHz Pentium, 2.5 microseconds. +When we use a memory heap, +we can allocate larger blocks of memory at a time and thus +reduce overhead. Slightly more efficient the method is when we +allocate the memory from the index page buffer pool, as we can +claim a new page fast. This is called buffer allocation. +When we allocate the memory from the dynamic memory of the +C environment, that is called dynamic allocation. + +The default way of operation of the memory heap is the following. +First, when the heap is created, an initial block of memory is +allocated. In dynamic allocation this may be about 50 bytes. +If more space is needed, additional blocks are allocated +and they are put into a linked list. +After the initial block, each allocated block is twice the size of the +previous, until a threshold is attained, after which the sizes +of the blocks stay the same. An exception is, of course, the case +where the caller requests a memory buffer whose size is +bigger than the threshold. In that case a block big enough must +be allocated. + +The heap is physically arranged so that if the current block +becomes full, a new block is allocated and always inserted in the +chain of blocks as the last block. + +In the debug version of the memory management, all the allocated +heaps are kept in a list (which is implemented as a hash table). +Thus we can notice if the caller tries to free an already freed +heap. In addition, each buffer given to the caller contains +start field at the start and a trailer field at the end of the buffer. + +The start field has the following content: +A. sizeof(ulint) bytes of field length (in the standard byte order) +B. sizeof(ulint) bytes of check field (a random number) + +The trailer field contains: +A. sizeof(ulint) bytes of check field (the same random number as at the start) + +Thus we can notice if something has been copied over the +borders of the buffer, which is illegal. +The memory in the buffers is initialized to a random byte sequence. +After freeing, all the blocks in the heap are set to random bytes +to help us discover errors which result from the use of +buffers in an already freed heap. */ + +#ifdef MEM_PERIODIC_CHECK + +ibool mem_block_list_inited; +/* List of all mem blocks allocated; protected by the mem_comm_pool mutex */ +UT_LIST_BASE_NODE_T(mem_block_t) mem_block_list; + +#endif + +/************************************************************************** +Duplicates a NUL-terminated string, allocated from a memory heap. */ +UNIV_INTERN +char* +mem_heap_strdup( +/*============*/ + /* out, own: a copy of the string */ + mem_heap_t* heap, /* in: memory heap where string is allocated */ + const char* str) /* in: string to be copied */ +{ + return(mem_heap_dup(heap, str, strlen(str) + 1)); +} + +/************************************************************************** +Duplicate a block of data, allocated from a memory heap. */ +UNIV_INTERN +void* +mem_heap_dup( +/*=========*/ + /* out, own: a copy of the data */ + mem_heap_t* heap, /* in: memory heap where copy is allocated */ + const void* data, /* in: data to be copied */ + ulint len) /* in: length of data, in bytes */ +{ + return(memcpy(mem_heap_alloc(heap, len), data, len)); +} + +/************************************************************************** +Concatenate two memory blocks and return the result, using a memory heap. */ +UNIV_INTERN +void* +mem_heap_cat( +/*=========*/ + /* out, own: the result */ + mem_heap_t* heap, /* in: memory heap where result is allocated */ + const void* b1, /* in: block 1 */ + ulint len1, /* in: length of b1, in bytes */ + const void* b2, /* in: block 2 */ + ulint len2) /* in: length of b2, in bytes */ +{ + void* res = mem_heap_alloc(heap, len1 + len2); + + memcpy(res, b1, len1); + memcpy((char*)res + len1, b2, len2); + + return(res); +} + +/************************************************************************** +Concatenate two strings and return the result, using a memory heap. */ +UNIV_INTERN +char* +mem_heap_strcat( +/*============*/ + /* out, own: the result */ + mem_heap_t* heap, /* in: memory heap where string is allocated */ + const char* s1, /* in: string 1 */ + const char* s2) /* in: string 2 */ +{ + char* s; + ulint s1_len = strlen(s1); + ulint s2_len = strlen(s2); + + s = mem_heap_alloc(heap, s1_len + s2_len + 1); + + memcpy(s, s1, s1_len); + memcpy(s + s1_len, s2, s2_len); + + s[s1_len + s2_len] = '\0'; + + return(s); +} + + +/******************************************************************** +Helper function for mem_heap_printf. */ +static +ulint +mem_heap_printf_low( +/*================*/ + /* out: length of formatted string, + including terminating NUL */ + char* buf, /* in/out: buffer to store formatted string + in, or NULL to just calculate length */ + const char* format, /* in: format string */ + va_list ap) /* in: arguments */ +{ + ulint len = 0; + + while (*format) { + + /* Does this format specifier have the 'l' length modifier. */ + ibool is_long = FALSE; + + /* Length of one parameter. */ + size_t plen; + + if (*format++ != '%') { + /* Non-format character. */ + + len++; + + if (buf) { + *buf++ = *(format - 1); + } + + continue; + } + + if (*format == 'l') { + is_long = TRUE; + format++; + } + + switch (*format++) { + case 's': + /* string */ + { + char* s = va_arg(ap, char*); + + /* "%ls" is a non-sensical format specifier. */ + ut_a(!is_long); + + plen = strlen(s); + len += plen; + + if (buf) { + memcpy(buf, s, plen); + buf += plen; + } + } + + break; + + case 'u': + /* unsigned int */ + { + char tmp[32]; + unsigned long val; + + /* We only support 'long' values for now. */ + ut_a(is_long); + + val = va_arg(ap, unsigned long); + + plen = sprintf(tmp, "%lu", val); + len += plen; + + if (buf) { + memcpy(buf, tmp, plen); + buf += plen; + } + } + + break; + + case '%': + + /* "%l%" is a non-sensical format specifier. */ + ut_a(!is_long); + + len++; + + if (buf) { + *buf++ = '%'; + } + + break; + + default: + ut_error; + } + } + + /* For the NUL character. */ + len++; + + if (buf) { + *buf = '\0'; + } + + return(len); +} + +/******************************************************************** +A simple (s)printf replacement that dynamically allocates the space for the +formatted string from the given heap. This supports a very limited set of +the printf syntax: types 's' and 'u' and length modifier 'l' (which is +required for the 'u' type). */ +UNIV_INTERN +char* +mem_heap_printf( +/*============*/ + /* out: heap-allocated formatted string */ + mem_heap_t* heap, /* in: memory heap */ + const char* format, /* in: format string */ + ...) +{ + va_list ap; + char* str; + ulint len; + + /* Calculate length of string */ + len = 0; + va_start(ap, format); + len = mem_heap_printf_low(NULL, format, ap); + va_end(ap); + + /* Now create it for real. */ + str = mem_heap_alloc(heap, len); + va_start(ap, format); + mem_heap_printf_low(str, format, ap); + va_end(ap); + + return(str); +} + +/******************************************************************* +Creates a memory heap block where data can be allocated. */ +UNIV_INTERN +mem_block_t* +mem_heap_create_block( +/*==================*/ + /* out, own: memory heap block, NULL if + did not succeed (only possible for + MEM_HEAP_BTR_SEARCH type heaps) */ + mem_heap_t* heap, /* in: memory heap or NULL if first block + should be created */ + ulint n, /* in: number of bytes needed for user data */ + ulint type, /* in: type of heap: MEM_HEAP_DYNAMIC or + MEM_HEAP_BUFFER */ + const char* file_name,/* in: file name where created */ + ulint line) /* in: line where created */ +{ + buf_block_t* buf_block = NULL; + mem_block_t* block; + ulint len; + + ut_ad((type == MEM_HEAP_DYNAMIC) || (type == MEM_HEAP_BUFFER) + || (type == MEM_HEAP_BUFFER + MEM_HEAP_BTR_SEARCH)); + + if (heap && heap->magic_n != MEM_BLOCK_MAGIC_N) { + mem_analyze_corruption(heap); + } + + /* In dynamic allocation, calculate the size: block header + data. */ + len = MEM_BLOCK_HEADER_SIZE + MEM_SPACE_NEEDED(n); + + if (type == MEM_HEAP_DYNAMIC || len < UNIV_PAGE_SIZE / 2) { + + ut_ad(type == MEM_HEAP_DYNAMIC || n <= MEM_MAX_ALLOC_IN_BUF); + + block = mem_area_alloc(&len, mem_comm_pool); + } else { + len = UNIV_PAGE_SIZE; + + if ((type & MEM_HEAP_BTR_SEARCH) && heap) { + /* We cannot allocate the block from the + buffer pool, but must get the free block from + the heap header free block field */ + + buf_block = heap->free_block; + heap->free_block = NULL; + + if (UNIV_UNLIKELY(!buf_block)) { + + return(NULL); + } + } else { + buf_block = buf_block_alloc(0); + } + + block = (mem_block_t*) buf_block->frame; + } + + ut_ad(block); + block->buf_block = buf_block; + block->magic_n = MEM_BLOCK_MAGIC_N; + ut_strlcpy_rev(block->file_name, file_name, sizeof(block->file_name)); + block->line = line; + +#ifdef MEM_PERIODIC_CHECK + mem_pool_mutex_enter(); + + if (!mem_block_list_inited) { + mem_block_list_inited = TRUE; + UT_LIST_INIT(mem_block_list); + } + + UT_LIST_ADD_LAST(mem_block_list, mem_block_list, block); + + mem_pool_mutex_exit(); +#endif + mem_block_set_len(block, len); + mem_block_set_type(block, type); + mem_block_set_free(block, MEM_BLOCK_HEADER_SIZE); + mem_block_set_start(block, MEM_BLOCK_HEADER_SIZE); + + block->free_block = NULL; + + ut_ad((ulint)MEM_BLOCK_HEADER_SIZE < len); + + return(block); +} + +/******************************************************************* +Adds a new block to a memory heap. */ +UNIV_INTERN +mem_block_t* +mem_heap_add_block( +/*===============*/ + /* out: created block, NULL if did not + succeed (only possible for + MEM_HEAP_BTR_SEARCH type heaps)*/ + mem_heap_t* heap, /* in: memory heap */ + ulint n) /* in: number of bytes user needs */ +{ + mem_block_t* block; + mem_block_t* new_block; + ulint new_size; + + ut_ad(mem_heap_check(heap)); + + block = UT_LIST_GET_LAST(heap->base); + + /* We have to allocate a new block. The size is always at least + doubled until the standard size is reached. After that the size + stays the same, except in cases where the caller needs more space. */ + + new_size = 2 * mem_block_get_len(block); + + if (heap->type != MEM_HEAP_DYNAMIC) { + /* From the buffer pool we allocate buffer frames */ + ut_a(n <= MEM_MAX_ALLOC_IN_BUF); + + if (new_size > MEM_MAX_ALLOC_IN_BUF) { + new_size = MEM_MAX_ALLOC_IN_BUF; + } + } else if (new_size > MEM_BLOCK_STANDARD_SIZE) { + + new_size = MEM_BLOCK_STANDARD_SIZE; + } + + if (new_size < n) { + new_size = n; + } + + new_block = mem_heap_create_block(heap, new_size, heap->type, + heap->file_name, heap->line); + if (new_block == NULL) { + + return(NULL); + } + + /* Add the new block as the last block */ + + UT_LIST_INSERT_AFTER(list, heap->base, block, new_block); + + return(new_block); +} + +/********************************************************************** +Frees a block from a memory heap. */ +UNIV_INTERN +void +mem_heap_block_free( +/*================*/ + mem_heap_t* heap, /* in: heap */ + mem_block_t* block) /* in: block to free */ +{ + ulint type; + ulint len; + buf_block_t* buf_block; + + if (block->magic_n != MEM_BLOCK_MAGIC_N) { + mem_analyze_corruption(block); + } + + UT_LIST_REMOVE(list, heap->base, block); + +#ifdef MEM_PERIODIC_CHECK + mem_pool_mutex_enter(); + + UT_LIST_REMOVE(mem_block_list, mem_block_list, block); + + mem_pool_mutex_exit(); +#endif + type = heap->type; + len = block->len; + buf_block = block->buf_block; + block->magic_n = MEM_FREED_BLOCK_MAGIC_N; + +#ifdef UNIV_MEM_DEBUG + /* In the debug version we set the memory to a random combination + of hex 0xDE and 0xAD. */ + + mem_erase_buf((byte*)block, len); +#else /* UNIV_MEM_DEBUG */ + UNIV_MEM_ASSERT_AND_FREE(block, len); +#endif /* UNIV_MEM_DEBUG */ + + if (type == MEM_HEAP_DYNAMIC || len < UNIV_PAGE_SIZE / 2) { + + ut_ad(!buf_block); + mem_area_free(block, mem_comm_pool); + } else { + ut_ad(type & MEM_HEAP_BUFFER); + + buf_block_free(buf_block); + } +} + +/********************************************************************** +Frees the free_block field from a memory heap. */ +UNIV_INTERN +void +mem_heap_free_block_free( +/*=====================*/ + mem_heap_t* heap) /* in: heap */ +{ + if (UNIV_LIKELY_NULL(heap->free_block)) { + + buf_block_free(heap->free_block); + + heap->free_block = NULL; + } +} + +#ifdef MEM_PERIODIC_CHECK +/********************************************************************** +Goes through the list of all allocated mem blocks, checks their magic +numbers, and reports possible corruption. */ +UNIV_INTERN +void +mem_validate_all_blocks(void) +/*=========================*/ +{ + mem_block_t* block; + + mem_pool_mutex_enter(); + + block = UT_LIST_GET_FIRST(mem_block_list); + + while (block) { + if (block->magic_n != MEM_BLOCK_MAGIC_N) { + mem_analyze_corruption(block); + } + + block = UT_LIST_GET_NEXT(mem_block_list, block); + } + + mem_pool_mutex_exit(); +} +#endif === added file 'storage/xtradb/mem/mem0pool.c' --- a/storage/xtradb/mem/mem0pool.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/mem/mem0pool.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,704 @@ +/***************************************************************************** + +Copyright (c) 1997, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/************************************************************************ +The lowest-level memory management + +Created 5/12/1997 Heikki Tuuri +*************************************************************************/ + +#include "mem0pool.h" +#ifdef UNIV_NONINL +#include "mem0pool.ic" +#endif + +#include "srv0srv.h" +#include "sync0sync.h" +#include "ut0mem.h" +#include "ut0lst.h" +#include "ut0byte.h" +#include "mem0mem.h" + +/* We would like to use also the buffer frames to allocate memory. This +would be desirable, because then the memory consumption of the database +would be fixed, and we might even lock the buffer pool to the main memory. +The problem here is that the buffer management routines can themselves call +memory allocation, while the buffer pool mutex is reserved. + +The main components of the memory consumption are: + +1. buffer pool, +2. parsed and optimized SQL statements, +3. data dictionary cache, +4. log buffer, +5. locks for each transaction, +6. hash table for the adaptive index, +7. state and buffers for each SQL query currently being executed, +8. session for each user, and +9. stack for each OS thread. + +Items 1 and 2 are managed by an LRU algorithm. Items 5 and 6 can potentially +consume very much memory. Items 7 and 8 should consume quite little memory, +and the OS should take care of item 9, which too should consume little memory. + +A solution to the memory management: + +1. the buffer pool size is set separately; +2. log buffer size is set separately; +3. the common pool size for all the other entries, except 8, is set separately. + +Problems: we may waste memory if the common pool is set too big. Another +problem is the locks, which may take very much space in big transactions. +Then the shared pool size should be set very big. We can allow locks to take +space from the buffer pool, but the SQL optimizer is then unaware of the +usable size of the buffer pool. We could also combine the objects in the +common pool and the buffers in the buffer pool into a single LRU list and +manage it uniformly, but this approach does not take into account the parsing +and other costs unique to SQL statements. + +The locks for a transaction can be seen as a part of the state of the +transaction. Hence, they should be stored in the common pool. We still +have the problem of a very big update transaction, for example, which +will set very many x-locks on rows, and the locks will consume a lot +of memory, say, half of the buffer pool size. + +Another problem is what to do if we are not able to malloc a requested +block of memory from the common pool. Then we can request memory from +the operating system. If it does not help, a system error results. + +Because 5 and 6 may potentially consume very much memory, we let them grow +into the buffer pool. We may let the locks of a transaction take frames +from the buffer pool, when the corresponding memory heap block has grown to +the size of a buffer frame. Similarly for the hash node cells of the locks, +and for the adaptive index. Thus, for each individual transaction, its locks +can occupy at most about the size of the buffer frame of memory in the common +pool, and after that its locks will grow into the buffer pool. */ + +/* Mask used to extract the free bit from area->size */ +#define MEM_AREA_FREE 1 + +/* The smallest memory area total size */ +#define MEM_AREA_MIN_SIZE (2 * MEM_AREA_EXTRA_SIZE) + + +/* Data structure for a memory pool. The space is allocated using the buddy +algorithm, where free list i contains areas of size 2 to power i. */ +struct mem_pool_struct{ + byte* buf; /* memory pool */ + ulint size; /* memory common pool size */ + ulint reserved; /* amount of currently allocated + memory */ + mutex_t mutex; /* mutex protecting this struct */ + UT_LIST_BASE_NODE_T(mem_area_t) + free_list[64]; /* lists of free memory areas: an + area is put to the list whose number + is the 2-logarithm of the area size */ +}; + +/* The common memory pool */ +UNIV_INTERN mem_pool_t* mem_comm_pool = NULL; + +/* We use this counter to check that the mem pool mutex does not leak; +this is to track a strange assertion failure reported at +mysql(a)lists.mysql.com */ + +UNIV_INTERN ulint mem_n_threads_inside = 0; + +/************************************************************************ +Reserves the mem pool mutex. */ +UNIV_INTERN +void +mem_pool_mutex_enter(void) +/*======================*/ +{ + mutex_enter(&(mem_comm_pool->mutex)); +} + +/************************************************************************ +Releases the mem pool mutex. */ +UNIV_INTERN +void +mem_pool_mutex_exit(void) +/*=====================*/ +{ + mutex_exit(&(mem_comm_pool->mutex)); +} + +/************************************************************************ +Returns memory area size. */ +UNIV_INLINE +ulint +mem_area_get_size( +/*==============*/ + /* out: size */ + mem_area_t* area) /* in: area */ +{ + return(area->size_and_free & ~MEM_AREA_FREE); +} + +/************************************************************************ +Sets memory area size. */ +UNIV_INLINE +void +mem_area_set_size( +/*==============*/ + mem_area_t* area, /* in: area */ + ulint size) /* in: size */ +{ + area->size_and_free = (area->size_and_free & MEM_AREA_FREE) + | size; +} + +/************************************************************************ +Returns memory area free bit. */ +UNIV_INLINE +ibool +mem_area_get_free( +/*==============*/ + /* out: TRUE if free */ + mem_area_t* area) /* in: area */ +{ +#if TRUE != MEM_AREA_FREE +# error "TRUE != MEM_AREA_FREE" +#endif + return(area->size_and_free & MEM_AREA_FREE); +} + +/************************************************************************ +Sets memory area free bit. */ +UNIV_INLINE +void +mem_area_set_free( +/*==============*/ + mem_area_t* area, /* in: area */ + ibool free) /* in: free bit value */ +{ +#if TRUE != MEM_AREA_FREE +# error "TRUE != MEM_AREA_FREE" +#endif + area->size_and_free = (area->size_and_free & ~MEM_AREA_FREE) + | free; +} + +/************************************************************************ +Creates a memory pool. */ +UNIV_INTERN +mem_pool_t* +mem_pool_create( +/*============*/ + /* out: memory pool */ + ulint size) /* in: pool size in bytes */ +{ + mem_pool_t* pool; + mem_area_t* area; + ulint i; + ulint used; + + pool = ut_malloc(sizeof(mem_pool_t)); + + /* We do not set the memory to zero (FALSE) in the pool, + but only when allocated at a higher level in mem0mem.c. + This is to avoid masking useful Purify warnings. */ + + pool->buf = ut_malloc_low(size, FALSE, TRUE); + pool->size = size; + + mutex_create(&pool->mutex, SYNC_MEM_POOL); + + /* Initialize the free lists */ + + for (i = 0; i < 64; i++) { + + UT_LIST_INIT(pool->free_list[i]); + } + + used = 0; + + while (size - used >= MEM_AREA_MIN_SIZE) { + + i = ut_2_log(size - used); + + if (ut_2_exp(i) > size - used) { + + /* ut_2_log rounds upward */ + + i--; + } + + area = (mem_area_t*)(pool->buf + used); + + mem_area_set_size(area, ut_2_exp(i)); + mem_area_set_free(area, TRUE); + UNIV_MEM_FREE(MEM_AREA_EXTRA_SIZE + (byte*) area, + ut_2_exp(i) - MEM_AREA_EXTRA_SIZE); + + UT_LIST_ADD_FIRST(free_list, pool->free_list[i], area); + + used = used + ut_2_exp(i); + } + + ut_ad(size >= used); + + pool->reserved = 0; + + return(pool); +} + +/************************************************************************ +Fills the specified free list. */ +static +ibool +mem_pool_fill_free_list( +/*====================*/ + /* out: TRUE if we were able to insert a + block to the free list */ + ulint i, /* in: free list index */ + mem_pool_t* pool) /* in: memory pool */ +{ + mem_area_t* area; + mem_area_t* area2; + ibool ret; + + ut_ad(mutex_own(&(pool->mutex))); + + if (UNIV_UNLIKELY(i >= 63)) { + /* We come here when we have run out of space in the + memory pool: */ + + return(FALSE); + } + + area = UT_LIST_GET_FIRST(pool->free_list[i + 1]); + + if (area == NULL) { + if (UT_LIST_GET_LEN(pool->free_list[i + 1]) > 0) { + ut_print_timestamp(stderr); + + fprintf(stderr, + " InnoDB: Error: mem pool free list %lu" + " length is %lu\n" + "InnoDB: though the list is empty!\n", + (ulong) i + 1, + (ulong) + UT_LIST_GET_LEN(pool->free_list[i + 1])); + } + + ret = mem_pool_fill_free_list(i + 1, pool); + + if (ret == FALSE) { + + return(FALSE); + } + + area = UT_LIST_GET_FIRST(pool->free_list[i + 1]); + } + + if (UNIV_UNLIKELY(UT_LIST_GET_LEN(pool->free_list[i + 1]) == 0)) { + mem_analyze_corruption(area); + + ut_error; + } + + UT_LIST_REMOVE(free_list, pool->free_list[i + 1], area); + + area2 = (mem_area_t*)(((byte*)area) + ut_2_exp(i)); + UNIV_MEM_ALLOC(area2, MEM_AREA_EXTRA_SIZE); + + mem_area_set_size(area2, ut_2_exp(i)); + mem_area_set_free(area2, TRUE); + + UT_LIST_ADD_FIRST(free_list, pool->free_list[i], area2); + + mem_area_set_size(area, ut_2_exp(i)); + + UT_LIST_ADD_FIRST(free_list, pool->free_list[i], area); + + return(TRUE); +} + +/************************************************************************ +Allocates memory from a pool. NOTE: This low-level function should only be +used in mem0mem.*! */ +UNIV_INTERN +void* +mem_area_alloc( +/*===========*/ + /* out, own: allocated memory buffer */ + ulint* psize, /* in: requested size in bytes; for optimum + space usage, the size should be a power of 2 + minus MEM_AREA_EXTRA_SIZE; + out: allocated size in bytes (greater than + or equal to the requested size) */ + mem_pool_t* pool) /* in: memory pool */ +{ + mem_area_t* area; + ulint size; + ulint n; + ibool ret; + + /* If we are using os allocator just make a simple call + to malloc */ + if (UNIV_LIKELY(srv_use_sys_malloc)) { + return(malloc(*psize)); + } + + size = *psize; + n = ut_2_log(ut_max(size + MEM_AREA_EXTRA_SIZE, MEM_AREA_MIN_SIZE)); + + mutex_enter(&(pool->mutex)); + mem_n_threads_inside++; + + ut_a(mem_n_threads_inside == 1); + + area = UT_LIST_GET_FIRST(pool->free_list[n]); + + if (area == NULL) { + ret = mem_pool_fill_free_list(n, pool); + + if (ret == FALSE) { + /* Out of memory in memory pool: we try to allocate + from the operating system with the regular malloc: */ + + mem_n_threads_inside--; + mutex_exit(&(pool->mutex)); + + return(ut_malloc(size)); + } + + area = UT_LIST_GET_FIRST(pool->free_list[n]); + } + + if (!mem_area_get_free(area)) { + fprintf(stderr, + "InnoDB: Error: Removing element from mem pool" + " free list %lu though the\n" + "InnoDB: element is not marked free!\n", + (ulong) n); + + mem_analyze_corruption(area); + + /* Try to analyze a strange assertion failure reported at + mysql(a)lists.mysql.com where the free bit IS 1 in the + hex dump above */ + + if (mem_area_get_free(area)) { + fprintf(stderr, + "InnoDB: Probably a race condition" + " because now the area is marked free!\n"); + } + + ut_error; + } + + if (UT_LIST_GET_LEN(pool->free_list[n]) == 0) { + fprintf(stderr, + "InnoDB: Error: Removing element from mem pool" + " free list %lu\n" + "InnoDB: though the list length is 0!\n", + (ulong) n); + mem_analyze_corruption(area); + + ut_error; + } + + ut_ad(mem_area_get_size(area) == ut_2_exp(n)); + + mem_area_set_free(area, FALSE); + + UT_LIST_REMOVE(free_list, pool->free_list[n], area); + + pool->reserved += mem_area_get_size(area); + + mem_n_threads_inside--; + mutex_exit(&(pool->mutex)); + + ut_ad(mem_pool_validate(pool)); + + *psize = ut_2_exp(n) - MEM_AREA_EXTRA_SIZE; + UNIV_MEM_ALLOC(MEM_AREA_EXTRA_SIZE + (byte*)area, *psize); + + return((void*)(MEM_AREA_EXTRA_SIZE + ((byte*)area))); +} + +/************************************************************************ +Gets the buddy of an area, if it exists in pool. */ +UNIV_INLINE +mem_area_t* +mem_area_get_buddy( +/*===============*/ + /* out: the buddy, NULL if no buddy in pool */ + mem_area_t* area, /* in: memory area */ + ulint size, /* in: memory area size */ + mem_pool_t* pool) /* in: memory pool */ +{ + mem_area_t* buddy; + + ut_ad(size != 0); + + if (((((byte*)area) - pool->buf) % (2 * size)) == 0) { + + /* The buddy is in a higher address */ + + buddy = (mem_area_t*)(((byte*)area) + size); + + if ((((byte*)buddy) - pool->buf) + size > pool->size) { + + /* The buddy is not wholly contained in the pool: + there is no buddy */ + + buddy = NULL; + } + } else { + /* The buddy is in a lower address; NOTE that area cannot + be at the pool lower end, because then we would end up to + the upper branch in this if-clause: the remainder would be + 0 */ + + buddy = (mem_area_t*)(((byte*)area) - size); + } + + return(buddy); +} + +/************************************************************************ +Frees memory to a pool. */ +UNIV_INTERN +void +mem_area_free( +/*==========*/ + void* ptr, /* in, own: pointer to allocated memory + buffer */ + mem_pool_t* pool) /* in: memory pool */ +{ + mem_area_t* area; + mem_area_t* buddy; + void* new_ptr; + ulint size; + ulint n; + + if (UNIV_LIKELY(srv_use_sys_malloc)) { + free(ptr); + + return; + } + + /* It may be that the area was really allocated from the OS with + regular malloc: check if ptr points within our memory pool */ + + if ((byte*)ptr < pool->buf || (byte*)ptr >= pool->buf + pool->size) { + ut_free(ptr); + + return; + } + + area = (mem_area_t*) (((byte*)ptr) - MEM_AREA_EXTRA_SIZE); + + if (mem_area_get_free(area)) { + fprintf(stderr, + "InnoDB: Error: Freeing element to mem pool" + " free list though the\n" + "InnoDB: element is marked free!\n"); + + mem_analyze_corruption(area); + ut_error; + } + + size = mem_area_get_size(area); + UNIV_MEM_FREE(ptr, size - MEM_AREA_EXTRA_SIZE); + + if (size == 0) { + fprintf(stderr, + "InnoDB: Error: Mem area size is 0. Possibly a" + " memory overrun of the\n" + "InnoDB: previous allocated area!\n"); + + mem_analyze_corruption(area); + ut_error; + } + +#ifdef UNIV_LIGHT_MEM_DEBUG + if (((byte*)area) + size < pool->buf + pool->size) { + + ulint next_size; + + next_size = mem_area_get_size( + (mem_area_t*)(((byte*)area) + size)); + if (UNIV_UNLIKELY(!next_size || !ut_is_2pow(next_size))) { + fprintf(stderr, + "InnoDB: Error: Memory area size %lu," + " next area size %lu not a power of 2!\n" + "InnoDB: Possibly a memory overrun of" + " the buffer being freed here.\n", + (ulong) size, (ulong) next_size); + mem_analyze_corruption(area); + + ut_error; + } + } +#endif + buddy = mem_area_get_buddy(area, size, pool); + + n = ut_2_log(size); + + mutex_enter(&(pool->mutex)); + mem_n_threads_inside++; + + ut_a(mem_n_threads_inside == 1); + + if (buddy && mem_area_get_free(buddy) + && (size == mem_area_get_size(buddy))) { + + /* The buddy is in a free list */ + + if ((byte*)buddy < (byte*)area) { + new_ptr = ((byte*)buddy) + MEM_AREA_EXTRA_SIZE; + + mem_area_set_size(buddy, 2 * size); + mem_area_set_free(buddy, FALSE); + } else { + new_ptr = ptr; + + mem_area_set_size(area, 2 * size); + } + + /* Remove the buddy from its free list and merge it to area */ + + UT_LIST_REMOVE(free_list, pool->free_list[n], buddy); + + pool->reserved += ut_2_exp(n); + + mem_n_threads_inside--; + mutex_exit(&(pool->mutex)); + + mem_area_free(new_ptr, pool); + + return; + } else { + UT_LIST_ADD_FIRST(free_list, pool->free_list[n], area); + + mem_area_set_free(area, TRUE); + + ut_ad(pool->reserved >= size); + + pool->reserved -= size; + } + + mem_n_threads_inside--; + mutex_exit(&(pool->mutex)); + + ut_ad(mem_pool_validate(pool)); +} + +/************************************************************************ +Validates a memory pool. */ +UNIV_INTERN +ibool +mem_pool_validate( +/*==============*/ + /* out: TRUE if ok */ + mem_pool_t* pool) /* in: memory pool */ +{ + mem_area_t* area; + mem_area_t* buddy; + ulint free; + ulint i; + + mutex_enter(&(pool->mutex)); + + free = 0; + + for (i = 0; i < 64; i++) { + + UT_LIST_VALIDATE(free_list, mem_area_t, pool->free_list[i]); + + area = UT_LIST_GET_FIRST(pool->free_list[i]); + + while (area != NULL) { + ut_a(mem_area_get_free(area)); + ut_a(mem_area_get_size(area) == ut_2_exp(i)); + + buddy = mem_area_get_buddy(area, ut_2_exp(i), pool); + + ut_a(!buddy || !mem_area_get_free(buddy) + || (ut_2_exp(i) != mem_area_get_size(buddy))); + + area = UT_LIST_GET_NEXT(free_list, area); + + free += ut_2_exp(i); + } + } + + ut_a(free + pool->reserved == pool->size); + + mutex_exit(&(pool->mutex)); + + return(TRUE); +} + +/************************************************************************ +Prints info of a memory pool. */ +UNIV_INTERN +void +mem_pool_print_info( +/*================*/ + FILE* outfile,/* in: output file to write to */ + mem_pool_t* pool) /* in: memory pool */ +{ + ulint i; + + mem_pool_validate(pool); + + fprintf(outfile, "INFO OF A MEMORY POOL\n"); + + mutex_enter(&(pool->mutex)); + + for (i = 0; i < 64; i++) { + if (UT_LIST_GET_LEN(pool->free_list[i]) > 0) { + + fprintf(outfile, + "Free list length %lu for" + " blocks of size %lu\n", + (ulong) UT_LIST_GET_LEN(pool->free_list[i]), + (ulong) ut_2_exp(i)); + } + } + + fprintf(outfile, "Pool size %lu, reserved %lu.\n", (ulong) pool->size, + (ulong) pool->reserved); + mutex_exit(&(pool->mutex)); +} + +/************************************************************************ +Returns the amount of reserved memory. */ +UNIV_INTERN +ulint +mem_pool_get_reserved( +/*==================*/ + /* out: reserved memory in bytes */ + mem_pool_t* pool) /* in: memory pool */ +{ + ulint reserved; + + mutex_enter(&(pool->mutex)); + + reserved = pool->reserved; + + mutex_exit(&(pool->mutex)); + + return(reserved); +} === added directory 'storage/xtradb/mtr' === added file 'storage/xtradb/mtr/mtr0log.c' --- a/storage/xtradb/mtr/mtr0log.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/mtr/mtr0log.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,609 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Mini-transaction log routines + +Created 12/7/1995 Heikki Tuuri +*******************************************************/ + +#include "mtr0log.h" + +#ifdef UNIV_NONINL +#include "mtr0log.ic" +#endif + +#include "buf0buf.h" +#include "dict0boot.h" +#include "log0recv.h" +#include "page0page.h" + +/************************************************************ +Catenates n bytes to the mtr log. */ +UNIV_INTERN +void +mlog_catenate_string( +/*=================*/ + mtr_t* mtr, /* in: mtr */ + const byte* str, /* in: string to write */ + ulint len) /* in: string length */ +{ + dyn_array_t* mlog; + + if (mtr_get_log_mode(mtr) == MTR_LOG_NONE) { + + return; + } + + mlog = &(mtr->log); + + dyn_push_string(mlog, str, len); +} + +/************************************************************ +Writes the initial part of a log record consisting of one-byte item +type and four-byte space and page numbers. Also pushes info +to the mtr memo that a buffer page has been modified. */ +UNIV_INTERN +void +mlog_write_initial_log_record( +/*==========================*/ + const byte* ptr, /* in: pointer to (inside) a buffer + frame holding the file page where + modification is made */ + byte type, /* in: log item type: MLOG_1BYTE, ... */ + mtr_t* mtr) /* in: mini-transaction handle */ +{ + byte* log_ptr; + + ut_ad(type <= MLOG_BIGGEST_TYPE); + ut_ad(type > MLOG_8BYTES); + + log_ptr = mlog_open(mtr, 11); + + /* If no logging is requested, we may return now */ + if (log_ptr == NULL) { + + return; + } + + log_ptr = mlog_write_initial_log_record_fast(ptr, type, log_ptr, mtr); + + mlog_close(mtr, log_ptr); +} + +/************************************************************ +Parses an initial log record written by mlog_write_initial_log_record. */ +UNIV_INTERN +byte* +mlog_parse_initial_log_record( +/*==========================*/ + /* out: parsed record end, NULL if not a complete + record */ + byte* ptr, /* in: buffer */ + byte* end_ptr,/* in: buffer end */ + byte* type, /* out: log record type: MLOG_1BYTE, ... */ + ulint* space, /* out: space id */ + ulint* page_no)/* out: page number */ +{ + if (end_ptr < ptr + 1) { + + return(NULL); + } + + *type = (byte)((ulint)*ptr & ~MLOG_SINGLE_REC_FLAG); + ut_ad(*type <= MLOG_BIGGEST_TYPE); + + ptr++; + + if (end_ptr < ptr + 2) { + + return(NULL); + } + + ptr = mach_parse_compressed(ptr, end_ptr, space); + + if (ptr == NULL) { + + return(NULL); + } + + ptr = mach_parse_compressed(ptr, end_ptr, page_no); + + return(ptr); +} + +/************************************************************ +Parses a log record written by mlog_write_ulint or mlog_write_dulint. */ +UNIV_INTERN +byte* +mlog_parse_nbytes( +/*==============*/ + /* out: parsed record end, NULL if not a complete + record or a corrupt record */ + ulint type, /* in: log record type: MLOG_1BYTE, ... */ + byte* ptr, /* in: buffer */ + byte* end_ptr,/* in: buffer end */ + byte* page, /* in: page where to apply the log record, or NULL */ + void* page_zip)/* in/out: compressed page, or NULL */ +{ + ulint offset; + ulint val; + dulint dval; + + ut_a(type <= MLOG_8BYTES); + ut_a(!page || !page_zip || fil_page_get_type(page) != FIL_PAGE_INDEX); + + if (end_ptr < ptr + 2) { + + return(NULL); + } + + offset = mach_read_from_2(ptr); + ptr += 2; + + if (offset >= UNIV_PAGE_SIZE) { + recv_sys->found_corrupt_log = TRUE; + + return(NULL); + } + + if (type == MLOG_8BYTES) { + ptr = mach_dulint_parse_compressed(ptr, end_ptr, &dval); + + if (ptr == NULL) { + + return(NULL); + } + + if (page) { + if (UNIV_LIKELY_NULL(page_zip)) { + mach_write_to_8 + (((page_zip_des_t*) page_zip)->data + + offset, dval); + } + mach_write_to_8(page + offset, dval); + } + + return(ptr); + } + + ptr = mach_parse_compressed(ptr, end_ptr, &val); + + if (ptr == NULL) { + + return(NULL); + } + + switch (type) { + case MLOG_1BYTE: + if (UNIV_UNLIKELY(val > 0xFFUL)) { + goto corrupt; + } + if (page) { + if (UNIV_LIKELY_NULL(page_zip)) { + mach_write_to_1 + (((page_zip_des_t*) page_zip)->data + + offset, val); + } + mach_write_to_1(page + offset, val); + } + break; + case MLOG_2BYTES: + if (UNIV_UNLIKELY(val > 0xFFFFUL)) { + goto corrupt; + } + if (page) { + if (UNIV_LIKELY_NULL(page_zip)) { + mach_write_to_2 + (((page_zip_des_t*) page_zip)->data + + offset, val); + } + mach_write_to_2(page + offset, val); + } + break; + case MLOG_4BYTES: + if (page) { + if (UNIV_LIKELY_NULL(page_zip)) { + mach_write_to_4 + (((page_zip_des_t*) page_zip)->data + + offset, val); + } + mach_write_to_4(page + offset, val); + } + break; + default: + corrupt: + recv_sys->found_corrupt_log = TRUE; + ptr = NULL; + } + + return(ptr); +} + +/************************************************************ +Writes 1 - 4 bytes to a file page buffered in the buffer pool. +Writes the corresponding log record to the mini-transaction log. */ +UNIV_INTERN +void +mlog_write_ulint( +/*=============*/ + byte* ptr, /* in: pointer where to write */ + ulint val, /* in: value to write */ + byte type, /* in: MLOG_1BYTE, MLOG_2BYTES, MLOG_4BYTES */ + mtr_t* mtr) /* in: mini-transaction handle */ +{ + byte* log_ptr; + + switch (type) { + case MLOG_1BYTE: + mach_write_to_1(ptr, val); + break; + case MLOG_2BYTES: + mach_write_to_2(ptr, val); + break; + case MLOG_4BYTES: + mach_write_to_4(ptr, val); + break; + default: + ut_error; + } + + log_ptr = mlog_open(mtr, 11 + 2 + 5); + + /* If no logging is requested, we may return now */ + if (log_ptr == NULL) { + + return; + } + + log_ptr = mlog_write_initial_log_record_fast(ptr, type, log_ptr, mtr); + + mach_write_to_2(log_ptr, page_offset(ptr)); + log_ptr += 2; + + log_ptr += mach_write_compressed(log_ptr, val); + + mlog_close(mtr, log_ptr); +} + +/************************************************************ +Writes 8 bytes to a file page buffered in the buffer pool. +Writes the corresponding log record to the mini-transaction log. */ +UNIV_INTERN +void +mlog_write_dulint( +/*==============*/ + byte* ptr, /* in: pointer where to write */ + dulint val, /* in: value to write */ + mtr_t* mtr) /* in: mini-transaction handle */ +{ + byte* log_ptr; + + ut_ad(ptr && mtr); + + mach_write_to_8(ptr, val); + + log_ptr = mlog_open(mtr, 11 + 2 + 9); + + /* If no logging is requested, we may return now */ + if (log_ptr == NULL) { + + return; + } + + log_ptr = mlog_write_initial_log_record_fast(ptr, MLOG_8BYTES, + log_ptr, mtr); + + mach_write_to_2(log_ptr, page_offset(ptr)); + log_ptr += 2; + + log_ptr += mach_dulint_write_compressed(log_ptr, val); + + mlog_close(mtr, log_ptr); +} + +/************************************************************ +Writes a string to a file page buffered in the buffer pool. Writes the +corresponding log record to the mini-transaction log. */ +UNIV_INTERN +void +mlog_write_string( +/*==============*/ + byte* ptr, /* in: pointer where to write */ + const byte* str, /* in: string to write */ + ulint len, /* in: string length */ + mtr_t* mtr) /* in: mini-transaction handle */ +{ + ut_ad(ptr && mtr); + ut_a(len < UNIV_PAGE_SIZE); + + memcpy(ptr, str, len); + + mlog_log_string(ptr, len, mtr); +} + +/************************************************************ +Logs a write of a string to a file page buffered in the buffer pool. +Writes the corresponding log record to the mini-transaction log. */ +UNIV_INTERN +void +mlog_log_string( +/*============*/ + byte* ptr, /* in: pointer written to */ + ulint len, /* in: string length */ + mtr_t* mtr) /* in: mini-transaction handle */ +{ + byte* log_ptr; + + ut_ad(ptr && mtr); + ut_ad(len <= UNIV_PAGE_SIZE); + + log_ptr = mlog_open(mtr, 30); + + /* If no logging is requested, we may return now */ + if (log_ptr == NULL) { + + return; + } + + log_ptr = mlog_write_initial_log_record_fast(ptr, MLOG_WRITE_STRING, + log_ptr, mtr); + mach_write_to_2(log_ptr, page_offset(ptr)); + log_ptr += 2; + + mach_write_to_2(log_ptr, len); + log_ptr += 2; + + mlog_close(mtr, log_ptr); + + mlog_catenate_string(mtr, ptr, len); +} + +/************************************************************ +Parses a log record written by mlog_write_string. */ +UNIV_INTERN +byte* +mlog_parse_string( +/*==============*/ + /* out: parsed record end, NULL if not a complete + record */ + byte* ptr, /* in: buffer */ + byte* end_ptr,/* in: buffer end */ + byte* page, /* in: page where to apply the log record, or NULL */ + void* page_zip)/* in/out: compressed page, or NULL */ +{ + ulint offset; + ulint len; + + ut_a(!page || !page_zip || fil_page_get_type(page) != FIL_PAGE_INDEX); + + if (end_ptr < ptr + 4) { + + return(NULL); + } + + offset = mach_read_from_2(ptr); + ptr += 2; + len = mach_read_from_2(ptr); + ptr += 2; + + if (UNIV_UNLIKELY(offset >= UNIV_PAGE_SIZE) + || UNIV_UNLIKELY(len + offset) > UNIV_PAGE_SIZE) { + recv_sys->found_corrupt_log = TRUE; + + return(NULL); + } + + if (end_ptr < ptr + len) { + + return(NULL); + } + + if (page) { + if (UNIV_LIKELY_NULL(page_zip)) { + memcpy(((page_zip_des_t*) page_zip)->data + + offset, ptr, len); + } + memcpy(page + offset, ptr, len); + } + + return(ptr + len); +} + +/************************************************************ +Opens a buffer for mlog, writes the initial log record and, +if needed, the field lengths of an index. */ +UNIV_INTERN +byte* +mlog_open_and_write_index( +/*======================*/ + /* out: buffer, NULL if log mode + MTR_LOG_NONE */ + mtr_t* mtr, /* in: mtr */ + byte* rec, /* in: index record or page */ + dict_index_t* index, /* in: record descriptor */ + byte type, /* in: log item type */ + ulint size) /* in: requested buffer size in bytes + (if 0, calls mlog_close() and returns NULL) */ +{ + byte* log_ptr; + const byte* log_start; + const byte* log_end; + + ut_ad(!!page_rec_is_comp(rec) == dict_table_is_comp(index->table)); + + if (!page_rec_is_comp(rec)) { + log_start = log_ptr = mlog_open(mtr, 11 + size); + if (!log_ptr) { + return(NULL); /* logging is disabled */ + } + log_ptr = mlog_write_initial_log_record_fast(rec, type, + log_ptr, mtr); + log_end = log_ptr + 11 + size; + } else { + ulint i; + ulint n = dict_index_get_n_fields(index); + /* total size needed */ + ulint total = 11 + size + (n + 2) * 2; + ulint alloc = total; + /* allocate at most DYN_ARRAY_DATA_SIZE at a time */ + if (alloc > DYN_ARRAY_DATA_SIZE) { + alloc = DYN_ARRAY_DATA_SIZE; + } + log_start = log_ptr = mlog_open(mtr, alloc); + if (!log_ptr) { + return(NULL); /* logging is disabled */ + } + log_end = log_ptr + alloc; + log_ptr = mlog_write_initial_log_record_fast(rec, type, + log_ptr, mtr); + mach_write_to_2(log_ptr, n); + log_ptr += 2; + mach_write_to_2(log_ptr, + dict_index_get_n_unique_in_tree(index)); + log_ptr += 2; + for (i = 0; i < n; i++) { + dict_field_t* field; + const dict_col_t* col; + ulint len; + + field = dict_index_get_nth_field(index, i); + col = dict_field_get_col(field); + len = field->fixed_len; + ut_ad(len < 0x7fff); + if (len == 0 + && (col->len > 255 || col->mtype == DATA_BLOB)) { + /* variable-length field + with maximum length > 255 */ + len = 0x7fff; + } + if (col->prtype & DATA_NOT_NULL) { + len |= 0x8000; + } + if (log_ptr + 2 > log_end) { + mlog_close(mtr, log_ptr); + ut_a(total > (ulint) (log_ptr - log_start)); + total -= log_ptr - log_start; + alloc = total; + if (alloc > DYN_ARRAY_DATA_SIZE) { + alloc = DYN_ARRAY_DATA_SIZE; + } + log_start = log_ptr = mlog_open(mtr, alloc); + if (!log_ptr) { + return(NULL); /* logging is disabled */ + } + log_end = log_ptr + alloc; + } + mach_write_to_2(log_ptr, len); + log_ptr += 2; + } + } + if (size == 0) { + mlog_close(mtr, log_ptr); + log_ptr = NULL; + } else if (log_ptr + size > log_end) { + mlog_close(mtr, log_ptr); + log_ptr = mlog_open(mtr, size); + } + return(log_ptr); +} + +/************************************************************ +Parses a log record written by mlog_open_and_write_index. */ +UNIV_INTERN +byte* +mlog_parse_index( +/*=============*/ + /* out: parsed record end, + NULL if not a complete record */ + byte* ptr, /* in: buffer */ + byte* end_ptr,/* in: buffer end */ + /* out: new value of log_ptr */ + ibool comp, /* in: TRUE=compact record format */ + dict_index_t** index) /* out, own: dummy index */ +{ + ulint i, n, n_uniq; + dict_table_t* table; + dict_index_t* ind; + + ut_ad(comp == FALSE || comp == TRUE); + + if (comp) { + if (end_ptr < ptr + 4) { + return(NULL); + } + n = mach_read_from_2(ptr); + ptr += 2; + n_uniq = mach_read_from_2(ptr); + ptr += 2; + ut_ad(n_uniq <= n); + if (end_ptr < ptr + n * 2) { + return(NULL); + } + } else { + n = n_uniq = 1; + } + table = dict_mem_table_create("LOG_DUMMY", DICT_HDR_SPACE, n, + comp ? DICT_TF_COMPACT : 0); + ind = dict_mem_index_create("LOG_DUMMY", "LOG_DUMMY", + DICT_HDR_SPACE, 0, n); + ind->table = table; + ind->n_uniq = (unsigned int) n_uniq; + if (n_uniq != n) { + ut_a(n_uniq + DATA_ROLL_PTR <= n); + ind->type = DICT_CLUSTERED; + } + if (comp) { + for (i = 0; i < n; i++) { + ulint len = mach_read_from_2(ptr); + ptr += 2; + /* The high-order bit of len is the NOT NULL flag; + the rest is 0 or 0x7fff for variable-length fields, + and 1..0x7ffe for fixed-length fields. */ + dict_mem_table_add_col( + table, NULL, NULL, + ((len + 1) & 0x7fff) <= 1 + ? DATA_BINARY : DATA_FIXBINARY, + len & 0x8000 ? DATA_NOT_NULL : 0, + len & 0x7fff); + + dict_index_add_col(ind, table, + dict_table_get_nth_col(table, i), + 0); + } + dict_table_add_system_columns(table, table->heap); + if (n_uniq != n) { + /* Identify DB_TRX_ID and DB_ROLL_PTR in the index. */ + ut_a(DATA_TRX_ID_LEN + == dict_index_get_nth_col(ind, DATA_TRX_ID - 1 + + n_uniq)->len); + ut_a(DATA_ROLL_PTR_LEN + == dict_index_get_nth_col(ind, DATA_ROLL_PTR - 1 + + n_uniq)->len); + ind->fields[DATA_TRX_ID - 1 + n_uniq].col + = &table->cols[n + DATA_TRX_ID]; + ind->fields[DATA_ROLL_PTR - 1 + n_uniq].col + = &table->cols[n + DATA_ROLL_PTR]; + } + } + /* avoid ut_ad(index->cached) in dict_index_get_n_unique_in_tree */ + ind->cached = TRUE; + *index = ind; + return(ptr); +} === added file 'storage/xtradb/mtr/mtr0mtr.c' --- a/storage/xtradb/mtr/mtr0mtr.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/mtr/mtr0mtr.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,345 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Mini-transaction buffer + +Created 11/26/1995 Heikki Tuuri +*******************************************************/ + +#include "mtr0mtr.h" + +#ifdef UNIV_NONINL +#include "mtr0mtr.ic" +#endif + +#include "buf0buf.h" +#include "page0types.h" +#include "mtr0log.h" +#include "log0log.h" + +/********************************************************************* +Releases the item in the slot given. */ +UNIV_INLINE +void +mtr_memo_slot_release( +/*==================*/ + mtr_t* mtr, /* in: mtr */ + mtr_memo_slot_t* slot) /* in: memo slot */ +{ + void* object; + ulint type; + + ut_ad(mtr && slot); + + object = slot->object; + type = slot->type; + + if (UNIV_LIKELY(object != NULL)) { + if (type <= MTR_MEMO_BUF_FIX) { + buf_page_release((buf_block_t*)object, type, mtr); + } else if (type == MTR_MEMO_S_LOCK) { + rw_lock_s_unlock((rw_lock_t*)object); +#ifdef UNIV_DEBUG + } else if (type != MTR_MEMO_X_LOCK) { + ut_ad(type == MTR_MEMO_MODIFY); + ut_ad(mtr_memo_contains(mtr, object, + MTR_MEMO_PAGE_X_FIX)); +#endif /* UNIV_DEBUG */ + } else { + rw_lock_x_unlock((rw_lock_t*)object); + } + } + + slot->object = NULL; +} + +/************************************************************** +Releases the mlocks and other objects stored in an mtr memo. They are released +in the order opposite to which they were pushed to the memo. NOTE! It is +essential that the x-rw-lock on a modified buffer page is not released before +buf_page_note_modification is called for that page! Otherwise, some thread +might race to modify it, and the flush list sort order on lsn would be +destroyed. */ +UNIV_INLINE +void +mtr_memo_pop_all( +/*=============*/ + mtr_t* mtr) /* in: mtr */ +{ + mtr_memo_slot_t* slot; + dyn_array_t* memo; + ulint offset; + + ut_ad(mtr); + ut_ad(mtr->magic_n == MTR_MAGIC_N); + ut_ad(mtr->state == MTR_COMMITTING); /* Currently only used in + commit */ + memo = &(mtr->memo); + + offset = dyn_array_get_data_size(memo); + + while (offset > 0) { + offset -= sizeof(mtr_memo_slot_t); + slot = dyn_array_get_element(memo, offset); + + mtr_memo_slot_release(mtr, slot); + } +} + +/**************************************************************** +Writes the contents of a mini-transaction log, if any, to the database log. */ +static +void +mtr_log_reserve_and_write( +/*======================*/ + mtr_t* mtr) /* in: mtr */ +{ + dyn_array_t* mlog; + dyn_block_t* block; + ulint data_size; + ibool success; + byte* first_data; + + ut_ad(mtr); + + mlog = &(mtr->log); + + first_data = dyn_block_get_data(mlog); + + if (mtr->n_log_recs > 1) { + mlog_catenate_ulint(mtr, MLOG_MULTI_REC_END, MLOG_1BYTE); + } else { + *first_data = (byte)((ulint)*first_data + | MLOG_SINGLE_REC_FLAG); + } + + if (mlog->heap == NULL) { + mtr->end_lsn = log_reserve_and_write_fast( + first_data, dyn_block_get_used(mlog), + &(mtr->start_lsn), &success); + if (success) { + + return; + } + } + + data_size = dyn_array_get_data_size(mlog); + + /* Open the database log for log_write_low */ + mtr->start_lsn = log_reserve_and_open(data_size); + + if (mtr->log_mode == MTR_LOG_ALL) { + + block = mlog; + + while (block != NULL) { + log_write_low(dyn_block_get_data(block), + dyn_block_get_used(block)); + block = dyn_array_get_next_block(mlog, block); + } + } else { + ut_ad(mtr->log_mode == MTR_LOG_NONE); + /* Do nothing */ + } + + mtr->end_lsn = log_close(); +} + +/******************************************************************* +Commits a mini-transaction. */ +UNIV_INTERN +void +mtr_commit( +/*=======*/ + mtr_t* mtr) /* in: mini-transaction */ +{ + ibool write_log; + + ut_ad(mtr); + ut_ad(mtr->magic_n == MTR_MAGIC_N); + ut_ad(mtr->state == MTR_ACTIVE); + ut_d(mtr->state = MTR_COMMITTING); + + write_log = mtr->modifications && mtr->n_log_recs; + + if (write_log) { + mtr_log_reserve_and_write(mtr); + } + + /* We first update the modification info to buffer pages, and only + after that release the log mutex: this guarantees that when the log + mutex is free, all buffer pages contain an up-to-date info of their + modifications. This fact is used in making a checkpoint when we look + at the oldest modification of any page in the buffer pool. It is also + required when we insert modified buffer pages in to the flush list + which must be sorted on oldest_modification. */ + + mtr_memo_pop_all(mtr); + + if (write_log) { + log_release(); + } + + ut_d(mtr->state = MTR_COMMITTED); + dyn_array_free(&(mtr->memo)); + dyn_array_free(&(mtr->log)); +} + +/************************************************************** +Releases the latches stored in an mtr memo down to a savepoint. +NOTE! The mtr must not have made changes to buffer pages after the +savepoint, as these can be handled only by mtr_commit. */ +UNIV_INTERN +void +mtr_rollback_to_savepoint( +/*======================*/ + mtr_t* mtr, /* in: mtr */ + ulint savepoint) /* in: savepoint */ +{ + mtr_memo_slot_t* slot; + dyn_array_t* memo; + ulint offset; + + ut_ad(mtr); + ut_ad(mtr->magic_n == MTR_MAGIC_N); + ut_ad(mtr->state == MTR_ACTIVE); + + memo = &(mtr->memo); + + offset = dyn_array_get_data_size(memo); + ut_ad(offset >= savepoint); + + while (offset > savepoint) { + offset -= sizeof(mtr_memo_slot_t); + + slot = dyn_array_get_element(memo, offset); + + ut_ad(slot->type != MTR_MEMO_MODIFY); + mtr_memo_slot_release(mtr, slot); + } +} + +/******************************************************* +Releases an object in the memo stack. */ +UNIV_INTERN +void +mtr_memo_release( +/*=============*/ + mtr_t* mtr, /* in: mtr */ + void* object, /* in: object */ + ulint type) /* in: object type: MTR_MEMO_S_LOCK, ... */ +{ + mtr_memo_slot_t* slot; + dyn_array_t* memo; + ulint offset; + + ut_ad(mtr); + ut_ad(mtr->magic_n == MTR_MAGIC_N); + ut_ad(mtr->state == MTR_ACTIVE); + + memo = &(mtr->memo); + + offset = dyn_array_get_data_size(memo); + + while (offset > 0) { + offset -= sizeof(mtr_memo_slot_t); + + slot = dyn_array_get_element(memo, offset); + + if ((object == slot->object) && (type == slot->type)) { + + mtr_memo_slot_release(mtr, slot); + + break; + } + } +} + +/************************************************************ +Reads 1 - 4 bytes from a file page buffered in the buffer pool. */ +UNIV_INTERN +ulint +mtr_read_ulint( +/*===========*/ + /* out: value read */ + const byte* ptr, /* in: pointer from where to read */ + ulint type, /* in: MLOG_1BYTE, MLOG_2BYTES, MLOG_4BYTES */ + mtr_t* mtr __attribute__((unused))) + /* in: mini-transaction handle */ +{ + ut_ad(mtr->state == MTR_ACTIVE); + ut_ad(mtr_memo_contains_page(mtr, ptr, MTR_MEMO_PAGE_S_FIX) + || mtr_memo_contains_page(mtr, ptr, MTR_MEMO_PAGE_X_FIX)); + if (type == MLOG_1BYTE) { + return(mach_read_from_1(ptr)); + } else if (type == MLOG_2BYTES) { + return(mach_read_from_2(ptr)); + } else { + ut_ad(type == MLOG_4BYTES); + return(mach_read_from_4(ptr)); + } +} + +/************************************************************ +Reads 8 bytes from a file page buffered in the buffer pool. */ +UNIV_INTERN +dulint +mtr_read_dulint( +/*============*/ + /* out: value read */ + const byte* ptr, /* in: pointer from where to read */ + mtr_t* mtr __attribute__((unused))) + /* in: mini-transaction handle */ +{ + ut_ad(mtr->state == MTR_ACTIVE); + ut_ad(mtr_memo_contains_page(mtr, ptr, MTR_MEMO_PAGE_S_FIX) + || mtr_memo_contains_page(mtr, ptr, MTR_MEMO_PAGE_X_FIX)); + return(mach_read_from_8(ptr)); +} + +#ifdef UNIV_DEBUG +/************************************************************** +Checks if memo contains the given page. */ +UNIV_INTERN +ibool +mtr_memo_contains_page( +/*===================*/ + /* out: TRUE if contains */ + mtr_t* mtr, /* in: mtr */ + const byte* ptr, /* in: pointer to buffer frame */ + ulint type) /* in: type of object */ +{ + return(mtr_memo_contains(mtr, buf_block_align(ptr), type)); +} + +/************************************************************* +Prints info of an mtr handle. */ +UNIV_INTERN +void +mtr_print( +/*======*/ + mtr_t* mtr) /* in: mtr */ +{ + fprintf(stderr, + "Mini-transaction handle: memo size %lu bytes" + " log size %lu bytes\n", + (ulong) dyn_array_get_data_size(&(mtr->memo)), + (ulong) dyn_array_get_data_size(&(mtr->log))); +} +#endif /* UNIV_DEBUG */ === added directory 'storage/xtradb/os' === added file 'storage/xtradb/os/os0file.c' --- a/storage/xtradb/os/os0file.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/os/os0file.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,4248 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +The interface to the operating system file i/o primitives + +Created 10/21/1995 Heikki Tuuri +*******************************************************/ + +#include "os0file.h" +#include "os0sync.h" +#include "os0thread.h" +#include "ut0mem.h" +#include "srv0srv.h" +#include "srv0start.h" +#include "fil0fil.h" +#include "buf0buf.h" + +#if defined(UNIV_HOTBACKUP) && defined(__WIN__) +/* Add includes for the _stat() call to compile on Windows */ +#include <sys/types.h> +#include <sys/stat.h> +#include <errno.h> +#endif /* UNIV_HOTBACKUP */ + +/* This specifies the file permissions InnoDB uses when it creates files in +Unix; the value of os_innodb_umask is initialized in ha_innodb.cc to +my_umask */ + +#ifndef __WIN__ +UNIV_INTERN ulint os_innodb_umask + = S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP; +#else +UNIV_INTERN ulint os_innodb_umask = 0; +#endif + +#ifdef UNIV_DO_FLUSH +/* If the following is set to TRUE, we do not call os_file_flush in every +os_file_write. We can set this TRUE when the doublewrite buffer is used. */ +UNIV_INTERN ibool os_do_not_call_flush_at_each_write = FALSE; +#else +/* We do not call os_file_flush in every os_file_write. */ +#endif /* UNIV_DO_FLUSH */ + +/* We use these mutexes to protect lseek + file i/o operation, if the +OS does not provide an atomic pread or pwrite, or similar */ +#define OS_FILE_N_SEEK_MUTEXES 16 +UNIV_INTERN os_mutex_t os_file_seek_mutexes[OS_FILE_N_SEEK_MUTEXES]; + +/* In simulated aio, merge at most this many consecutive i/os */ +#define OS_AIO_MERGE_N_CONSECUTIVE 64 + +/* If this flag is TRUE, then we will use the native aio of the +OS (provided we compiled Innobase with it in), otherwise we will +use simulated aio we build below with threads */ + +UNIV_INTERN ibool os_aio_use_native_aio = FALSE; + +UNIV_INTERN ibool os_aio_print_debug = FALSE; + +/* The aio array slot structure */ +typedef struct os_aio_slot_struct os_aio_slot_t; + +struct os_aio_slot_struct{ + ibool is_read; /* TRUE if a read operation */ + ulint pos; /* index of the slot in the aio + array */ + ibool reserved; /* TRUE if this slot is reserved */ + time_t reservation_time;/* time when reserved */ + ulint len; /* length of the block to read or + write */ + byte* buf; /* buffer used in i/o */ + ulint type; /* OS_FILE_READ or OS_FILE_WRITE */ + ulint offset; /* 32 low bits of file offset in + bytes */ + ulint offset_high; /* 32 high bits of file offset */ + os_file_t file; /* file where to read or write */ + const char* name; /* file name or path */ + ibool io_already_done;/* used only in simulated aio: + TRUE if the physical i/o already + made and only the slot message + needs to be passed to the caller + of os_aio_simulated_handle */ + fil_node_t* message1; /* message which is given by the */ + void* message2; /* the requester of an aio operation + and which can be used to identify + which pending aio operation was + completed */ +#ifdef WIN_ASYNC_IO + os_event_t event; /* event object we need in the + OVERLAPPED struct */ + OVERLAPPED control; /* Windows control block for the + aio request */ +#endif +}; + +/* The aio array structure */ +typedef struct os_aio_array_struct os_aio_array_t; + +struct os_aio_array_struct{ + os_mutex_t mutex; /* the mutex protecting the aio array */ + os_event_t not_full; /* The event which is set to the signaled + state when there is space in the aio + outside the ibuf segment */ + os_event_t is_empty; /* The event which is set to the signaled + state when there are no pending i/os + in this array */ + ulint n_slots; /* Total number of slots in the aio array. + This must be divisible by n_threads. */ + ulint n_segments;/* Number of segments in the aio array of + pending aio requests. A thread can wait + separately for any one of the segments. */ + ulint n_reserved;/* Number of reserved slots in the + aio array outside the ibuf segment */ + os_aio_slot_t* slots; /* Pointer to the slots in the array */ +#ifdef __WIN__ + os_native_event_t* native_events; + /* Pointer to an array of OS native event + handles where we copied the handles from + slots, in the same order. This can be used + in WaitForMultipleObjects; used only in + Windows */ +#endif +}; + +/* Array of events used in simulated aio */ +static os_event_t* os_aio_segment_wait_events = NULL; + +/* The aio arrays for non-ibuf i/o and ibuf i/o, as well as sync aio. These +are NULL when the module has not yet been initialized. */ +static os_aio_array_t* os_aio_read_array = NULL; +static os_aio_array_t* os_aio_write_array = NULL; +static os_aio_array_t* os_aio_ibuf_array = NULL; +static os_aio_array_t* os_aio_log_array = NULL; +static os_aio_array_t* os_aio_sync_array = NULL; + +static ulint os_aio_n_segments = ULINT_UNDEFINED; + +/* If the following is TRUE, read i/o handler threads try to +wait until a batch of new read requests have been posted */ +static ibool os_aio_recommend_sleep_for_read_threads = FALSE; + +UNIV_INTERN ulint os_n_file_reads = 0; +UNIV_INTERN ulint os_bytes_read_since_printout = 0; +UNIV_INTERN ulint os_n_file_writes = 0; +UNIV_INTERN ulint os_n_fsyncs = 0; +UNIV_INTERN ulint os_n_file_reads_old = 0; +UNIV_INTERN ulint os_n_file_writes_old = 0; +UNIV_INTERN ulint os_n_fsyncs_old = 0; +UNIV_INTERN time_t os_last_printout; + +UNIV_INTERN ibool os_has_said_disk_full = FALSE; + +/* The mutex protecting the following counts of pending I/O operations */ +static os_mutex_t os_file_count_mutex; +UNIV_INTERN ulint os_file_n_pending_preads = 0; +UNIV_INTERN ulint os_file_n_pending_pwrites = 0; +UNIV_INTERN ulint os_n_pending_writes = 0; +UNIV_INTERN ulint os_n_pending_reads = 0; + +/*************************************************************************** +Gets the operating system version. Currently works only on Windows. */ +UNIV_INTERN +ulint +os_get_os_version(void) +/*===================*/ + /* out: OS_WIN95, OS_WIN31, OS_WINNT, OS_WIN2000 */ +{ +#ifdef __WIN__ + OSVERSIONINFO os_info; + + os_info.dwOSVersionInfoSize = sizeof(OSVERSIONINFO); + + ut_a(GetVersionEx(&os_info)); + + if (os_info.dwPlatformId == VER_PLATFORM_WIN32s) { + return(OS_WIN31); + } else if (os_info.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS) { + return(OS_WIN95); + } else if (os_info.dwPlatformId == VER_PLATFORM_WIN32_NT) { + if (os_info.dwMajorVersion <= 4) { + return(OS_WINNT); + } else { + return(OS_WIN2000); + } + } else { + ut_error; + return(0); + } +#else + ut_error; + + return(0); +#endif +} + +/*************************************************************************** +Retrieves the last error number if an error occurs in a file io function. +The number should be retrieved before any other OS calls (because they may +overwrite the error number). If the number is not known to this program, +the OS error number + 100 is returned. */ +UNIV_INTERN +ulint +os_file_get_last_error( +/*===================*/ + /* out: error number, or OS error + number + 100 */ + ibool report_all_errors) /* in: TRUE if we want an error message + printed of all errors */ +{ + ulint err; + +#ifdef __WIN__ + + err = (ulint) GetLastError(); + + if (report_all_errors + || (err != ERROR_DISK_FULL && err != ERROR_FILE_EXISTS)) { + + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: Operating system error number %lu" + " in a file operation.\n", (ulong) err); + + if (err == ERROR_PATH_NOT_FOUND) { + fprintf(stderr, + "InnoDB: The error means the system" + " cannot find the path specified.\n"); + + if (srv_is_being_started) { + fprintf(stderr, + "InnoDB: If you are installing InnoDB," + " remember that you must create\n" + "InnoDB: directories yourself, InnoDB" + " does not create them.\n"); + } + } else if (err == ERROR_ACCESS_DENIED) { + fprintf(stderr, + "InnoDB: The error means mysqld does not have" + " the access rights to\n" + "InnoDB: the directory. It may also be" + " you have created a subdirectory\n" + "InnoDB: of the same name as a data file.\n"); + } else if (err == ERROR_SHARING_VIOLATION + || err == ERROR_LOCK_VIOLATION) { + fprintf(stderr, + "InnoDB: The error means that another program" + " is using InnoDB's files.\n" + "InnoDB: This might be a backup or antivirus" + " software or another instance\n" + "InnoDB: of MySQL." + " Please close it to get rid of this error.\n"); + } else { + fprintf(stderr, + "InnoDB: Some operating system error numbers" + " are described at\n" + "InnoDB: " + "http://dev.mysql.com/doc/refman/5.1/en/" + "operating-system-error-codes.html\n"); + } + } + + fflush(stderr); + + if (err == ERROR_FILE_NOT_FOUND) { + return(OS_FILE_NOT_FOUND); + } else if (err == ERROR_DISK_FULL) { + return(OS_FILE_DISK_FULL); + } else if (err == ERROR_FILE_EXISTS) { + return(OS_FILE_ALREADY_EXISTS); + } else if (err == ERROR_SHARING_VIOLATION + || err == ERROR_LOCK_VIOLATION) { + return(OS_FILE_SHARING_VIOLATION); + } else { + return(100 + err); + } +#else + err = (ulint) errno; + + if (report_all_errors + || (err != ENOSPC && err != EEXIST)) { + + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: Operating system error number %lu" + " in a file operation.\n", (ulong) err); + + if (err == ENOENT) { + fprintf(stderr, + "InnoDB: The error means the system" + " cannot find the path specified.\n"); + + if (srv_is_being_started) { + fprintf(stderr, + "InnoDB: If you are installing InnoDB," + " remember that you must create\n" + "InnoDB: directories yourself, InnoDB" + " does not create them.\n"); + } + } else if (err == EACCES) { + fprintf(stderr, + "InnoDB: The error means mysqld does not have" + " the access rights to\n" + "InnoDB: the directory.\n"); + } else { + if (strerror((int)err) != NULL) { + fprintf(stderr, + "InnoDB: Error number %lu" + " means '%s'.\n", + err, strerror((int)err)); + } + + fprintf(stderr, + "InnoDB: Some operating system" + " error numbers are described at\n" + "InnoDB: " + "http://dev.mysql.com/doc/refman/5.1/en/" + "operating-system-error-codes.html\n"); + } + } + + fflush(stderr); + + if (err == ENOSPC) { + return(OS_FILE_DISK_FULL); + } else if (err == ENOENT) { + return(OS_FILE_NOT_FOUND); + } else if (err == EEXIST) { + return(OS_FILE_ALREADY_EXISTS); + } else if (err == EXDEV || err == ENOTDIR || err == EISDIR) { + return(OS_FILE_PATH_ERROR); + } else { + return(100 + err); + } +#endif +} + +/******************************************************************** +Does error handling when a file operation fails. +Conditionally exits (calling exit(3)) based on should_exit value and the +error type */ +static +ibool +os_file_handle_error_cond_exit( +/*===========================*/ + /* out: TRUE if we should retry the + operation */ + const char* name, /* in: name of a file or NULL */ + const char* operation, /* in: operation */ + ibool should_exit) /* in: call exit(3) if unknown error + and this parameter is TRUE */ +{ + ulint err; + + err = os_file_get_last_error(FALSE); + + if (err == OS_FILE_DISK_FULL) { + /* We only print a warning about disk full once */ + + if (os_has_said_disk_full) { + + return(FALSE); + } + + if (name) { + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: Encountered a problem with" + " file %s\n", name); + } + + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: Disk is full. Try to clean the disk" + " to free space.\n"); + + os_has_said_disk_full = TRUE; + + fflush(stderr); + + return(FALSE); + } else if (err == OS_FILE_AIO_RESOURCES_RESERVED) { + + return(TRUE); + } else if (err == OS_FILE_ALREADY_EXISTS + || err == OS_FILE_PATH_ERROR) { + + return(FALSE); + } else if (err == OS_FILE_SHARING_VIOLATION) { + + os_thread_sleep(10000000); /* 10 sec */ + return(TRUE); + } else { + if (name) { + fprintf(stderr, "InnoDB: File name %s\n", name); + } + + fprintf(stderr, "InnoDB: File operation call: '%s'.\n", + operation); + + if (should_exit) { + fprintf(stderr, "InnoDB: Cannot continue operation.\n"); + + fflush(stderr); + + exit(1); + } + } + + return(FALSE); +} + +/******************************************************************** +Does error handling when a file operation fails. */ +static +ibool +os_file_handle_error( +/*=================*/ + /* out: TRUE if we should retry the + operation */ + const char* name, /* in: name of a file or NULL */ + const char* operation)/* in: operation */ +{ + /* exit in case of unknown error */ + return(os_file_handle_error_cond_exit(name, operation, TRUE)); +} + +/******************************************************************** +Does error handling when a file operation fails. */ +static +ibool +os_file_handle_error_no_exit( +/*=========================*/ + /* out: TRUE if we should retry the + operation */ + const char* name, /* in: name of a file or NULL */ + const char* operation)/* in: operation */ +{ + /* don't exit in case of unknown error */ + return(os_file_handle_error_cond_exit(name, operation, FALSE)); +} + +#undef USE_FILE_LOCK +#define USE_FILE_LOCK +#if defined(UNIV_HOTBACKUP) || defined(__WIN__) || defined(__NETWARE__) +/* InnoDB Hot Backup does not lock the data files. + * On Windows, mandatory locking is used. + */ +# undef USE_FILE_LOCK +#endif +#ifdef USE_FILE_LOCK +/******************************************************************** +Obtain an exclusive lock on a file. */ +static +int +os_file_lock( +/*=========*/ + /* out: 0 on success */ + int fd, /* in: file descriptor */ + const char* name) /* in: file name */ +{ + struct flock lk; + lk.l_type = F_WRLCK; + lk.l_whence = SEEK_SET; + lk.l_start = lk.l_len = 0; + if (fcntl(fd, F_SETLK, &lk) == -1) { + fprintf(stderr, + "InnoDB: Unable to lock %s, error: %d\n", name, errno); + + if (errno == EAGAIN || errno == EACCES) { + fprintf(stderr, + "InnoDB: Check that you do not already have" + " another mysqld process\n" + "InnoDB: using the same InnoDB data" + " or log files.\n"); + } + + return(-1); + } + + return(0); +} +#endif /* USE_FILE_LOCK */ + +/******************************************************************** +Creates the seek mutexes used in positioned reads and writes. */ +UNIV_INTERN +void +os_io_init_simple(void) +/*===================*/ +{ + ulint i; + + os_file_count_mutex = os_mutex_create(NULL); + + for (i = 0; i < OS_FILE_N_SEEK_MUTEXES; i++) { + os_file_seek_mutexes[i] = os_mutex_create(NULL); + } +} + +/*************************************************************************** +Creates a temporary file. This function is like tmpfile(3), but +the temporary file is created in the MySQL temporary directory. +On Netware, this function is like tmpfile(3), because the C run-time +library of Netware does not expose the delete-on-close flag. */ +UNIV_INTERN +FILE* +os_file_create_tmpfile(void) +/*========================*/ + /* out: temporary file handle, or NULL on error */ +{ +#ifdef UNIV_HOTBACKUP + ut_error; + + return(NULL); +#else +# ifdef __NETWARE__ + FILE* file = tmpfile(); +# else /* __NETWARE__ */ + FILE* file = NULL; + int fd = innobase_mysql_tmpfile(); + + if (fd >= 0) { + file = fdopen(fd, "w+b"); + } +# endif /* __NETWARE__ */ + + if (!file) { + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: Error: unable to create temporary file;" + " errno: %d\n", errno); +# ifndef __NETWARE__ + if (fd >= 0) { + close(fd); + } +# endif /* !__NETWARE__ */ + } + + return(file); +#endif /* UNIV_HOTBACKUP */ +} + +/*************************************************************************** +The os_file_opendir() function opens a directory stream corresponding to the +directory named by the dirname argument. The directory stream is positioned +at the first entry. In both Unix and Windows we automatically skip the '.' +and '..' items at the start of the directory listing. */ +UNIV_INTERN +os_file_dir_t +os_file_opendir( +/*============*/ + /* out: directory stream, NULL if + error */ + const char* dirname, /* in: directory name; it must not + contain a trailing '\' or '/' */ + ibool error_is_fatal) /* in: TRUE if we should treat an + error as a fatal error; if we try to + open symlinks then we do not wish a + fatal error if it happens not to be + a directory */ +{ + os_file_dir_t dir; +#ifdef __WIN__ + LPWIN32_FIND_DATA lpFindFileData; + char path[OS_FILE_MAX_PATH + 3]; + + ut_a(strlen(dirname) < OS_FILE_MAX_PATH); + + strcpy(path, dirname); + strcpy(path + strlen(path), "\\*"); + + /* Note that in Windows opening the 'directory stream' also retrieves + the first entry in the directory. Since it is '.', that is no problem, + as we will skip over the '.' and '..' entries anyway. */ + + lpFindFileData = ut_malloc(sizeof(WIN32_FIND_DATA)); + + dir = FindFirstFile((LPCTSTR) path, lpFindFileData); + + ut_free(lpFindFileData); + + if (dir == INVALID_HANDLE_VALUE) { + + if (error_is_fatal) { + os_file_handle_error(dirname, "opendir"); + } + + return(NULL); + } + + return(dir); +#else + dir = opendir(dirname); + + if (dir == NULL && error_is_fatal) { + os_file_handle_error(dirname, "opendir"); + } + + return(dir); +#endif +} + +/*************************************************************************** +Closes a directory stream. */ +UNIV_INTERN +int +os_file_closedir( +/*=============*/ + /* out: 0 if success, -1 if failure */ + os_file_dir_t dir) /* in: directory stream */ +{ +#ifdef __WIN__ + BOOL ret; + + ret = FindClose(dir); + + if (!ret) { + os_file_handle_error_no_exit(NULL, "closedir"); + + return(-1); + } + + return(0); +#else + int ret; + + ret = closedir(dir); + + if (ret) { + os_file_handle_error_no_exit(NULL, "closedir"); + } + + return(ret); +#endif +} + +/*************************************************************************** +This function returns information of the next file in the directory. We jump +over the '.' and '..' entries in the directory. */ +UNIV_INTERN +int +os_file_readdir_next_file( +/*======================*/ + /* out: 0 if ok, -1 if error, 1 if at the end + of the directory */ + const char* dirname,/* in: directory name or path */ + os_file_dir_t dir, /* in: directory stream */ + os_file_stat_t* info) /* in/out: buffer where the info is returned */ +{ +#ifdef __WIN__ + LPWIN32_FIND_DATA lpFindFileData; + BOOL ret; + + lpFindFileData = ut_malloc(sizeof(WIN32_FIND_DATA)); +next_file: + ret = FindNextFile(dir, lpFindFileData); + + if (ret) { + ut_a(strlen((char *) lpFindFileData->cFileName) + < OS_FILE_MAX_PATH); + + if (strcmp((char *) lpFindFileData->cFileName, ".") == 0 + || strcmp((char *) lpFindFileData->cFileName, "..") == 0) { + + goto next_file; + } + + strcpy(info->name, (char *) lpFindFileData->cFileName); + + info->size = (ib_int64_t)(lpFindFileData->nFileSizeLow) + + (((ib_int64_t)(lpFindFileData->nFileSizeHigh)) + << 32); + + if (lpFindFileData->dwFileAttributes + & FILE_ATTRIBUTE_REPARSE_POINT) { + /* TODO: test Windows symlinks */ + /* TODO: MySQL has apparently its own symlink + implementation in Windows, dbname.sym can + redirect a database directory: + http://dev.mysql.com/doc/refman/5.1/en/ + windows-symbolic-links.html */ + info->type = OS_FILE_TYPE_LINK; + } else if (lpFindFileData->dwFileAttributes + & FILE_ATTRIBUTE_DIRECTORY) { + info->type = OS_FILE_TYPE_DIR; + } else { + /* It is probably safest to assume that all other + file types are normal. Better to check them rather + than blindly skip them. */ + + info->type = OS_FILE_TYPE_FILE; + } + } + + ut_free(lpFindFileData); + + if (ret) { + return(0); + } else if (GetLastError() == ERROR_NO_MORE_FILES) { + + return(1); + } else { + os_file_handle_error_no_exit(dirname, + "readdir_next_file"); + return(-1); + } +#else + struct dirent* ent; + char* full_path; + int ret; + struct stat statinfo; +#ifdef HAVE_READDIR_R + char dirent_buf[sizeof(struct dirent) + + _POSIX_PATH_MAX + 100]; + /* In /mysys/my_lib.c, _POSIX_PATH_MAX + 1 is used as + the max file name len; but in most standards, the + length is NAME_MAX; we add 100 to be even safer */ +#endif + +next_file: + +#ifdef HAVE_READDIR_R + ret = readdir_r(dir, (struct dirent*)dirent_buf, &ent); + + if (ret != 0) { + fprintf(stderr, + "InnoDB: cannot read directory %s, error %lu\n", + dirname, (ulong)ret); + + return(-1); + } + + if (ent == NULL) { + /* End of directory */ + + return(1); + } + + ut_a(strlen(ent->d_name) < _POSIX_PATH_MAX + 100 - 1); +#else + ent = readdir(dir); + + if (ent == NULL) { + + return(1); + } +#endif + ut_a(strlen(ent->d_name) < OS_FILE_MAX_PATH); + + if (strcmp(ent->d_name, ".") == 0 || strcmp(ent->d_name, "..") == 0) { + + goto next_file; + } + + strcpy(info->name, ent->d_name); + + full_path = ut_malloc(strlen(dirname) + strlen(ent->d_name) + 10); + + sprintf(full_path, "%s/%s", dirname, ent->d_name); + + ret = stat(full_path, &statinfo); + + if (ret) { + os_file_handle_error_no_exit(full_path, "stat"); + + ut_free(full_path); + + return(-1); + } + + info->size = (ib_int64_t)statinfo.st_size; + + if (S_ISDIR(statinfo.st_mode)) { + info->type = OS_FILE_TYPE_DIR; + } else if (S_ISLNK(statinfo.st_mode)) { + info->type = OS_FILE_TYPE_LINK; + } else if (S_ISREG(statinfo.st_mode)) { + info->type = OS_FILE_TYPE_FILE; + } else { + info->type = OS_FILE_TYPE_UNKNOWN; + } + + ut_free(full_path); + + return(0); +#endif +} + +/********************************************************************* +This function attempts to create a directory named pathname. The new directory +gets default permissions. On Unix the permissions are (0770 & ~umask). If the +directory exists already, nothing is done and the call succeeds, unless the +fail_if_exists arguments is true. */ +UNIV_INTERN +ibool +os_file_create_directory( +/*=====================*/ + /* out: TRUE if call succeeds, + FALSE on error */ + const char* pathname, /* in: directory name as + null-terminated string */ + ibool fail_if_exists) /* in: if TRUE, pre-existing directory + is treated as an error. */ +{ +#ifdef __WIN__ + BOOL rcode; + + rcode = CreateDirectory((LPCTSTR) pathname, NULL); + if (!(rcode != 0 + || (GetLastError() == ERROR_ALREADY_EXISTS + && !fail_if_exists))) { + /* failure */ + os_file_handle_error(pathname, "CreateDirectory"); + + return(FALSE); + } + + return (TRUE); +#else + int rcode; + + rcode = mkdir(pathname, 0770); + + if (!(rcode == 0 || (errno == EEXIST && !fail_if_exists))) { + /* failure */ + os_file_handle_error(pathname, "mkdir"); + + return(FALSE); + } + + return (TRUE); +#endif +} + +/******************************************************************** +A simple function to open or create a file. */ +UNIV_INTERN +os_file_t +os_file_create_simple( +/*==================*/ + /* out, own: handle to the file, not defined + if error, error number can be retrieved with + os_file_get_last_error */ + const char* name, /* in: name of the file or path as a + null-terminated string */ + ulint create_mode,/* in: OS_FILE_OPEN if an existing file is + opened (if does not exist, error), or + OS_FILE_CREATE if a new file is created + (if exists, error), or + OS_FILE_CREATE_PATH if new file + (if exists, error) and subdirectories along + its path are created (if needed)*/ + ulint access_type,/* in: OS_FILE_READ_ONLY or + OS_FILE_READ_WRITE */ + ibool* success)/* out: TRUE if succeed, FALSE if error */ +{ +#ifdef __WIN__ + os_file_t file; + DWORD create_flag; + DWORD access; + DWORD attributes = 0; + ibool retry; + +try_again: + ut_a(name); + + if (create_mode == OS_FILE_OPEN) { + create_flag = OPEN_EXISTING; + } else if (create_mode == OS_FILE_CREATE) { + create_flag = CREATE_NEW; + } else if (create_mode == OS_FILE_CREATE_PATH) { + /* create subdirs along the path if needed */ + *success = os_file_create_subdirs_if_needed(name); + if (!*success) { + ut_error; + } + create_flag = CREATE_NEW; + create_mode = OS_FILE_CREATE; + } else { + create_flag = 0; + ut_error; + } + + if (access_type == OS_FILE_READ_ONLY) { + access = GENERIC_READ; + } else if (access_type == OS_FILE_READ_WRITE) { + access = GENERIC_READ | GENERIC_WRITE; + } else { + access = 0; + ut_error; + } + + file = CreateFile((LPCTSTR) name, + access, + FILE_SHARE_READ | FILE_SHARE_WRITE, + /* file can be read and written also + by other processes */ + NULL, /* default security attributes */ + create_flag, + attributes, + NULL); /* no template file */ + + if (file == INVALID_HANDLE_VALUE) { + *success = FALSE; + + retry = os_file_handle_error(name, + create_mode == OS_FILE_OPEN ? + "open" : "create"); + if (retry) { + goto try_again; + } + } else { + *success = TRUE; + } + + return(file); +#else /* __WIN__ */ + os_file_t file; + int create_flag; + ibool retry; + +try_again: + ut_a(name); + + if (create_mode == OS_FILE_OPEN) { + if (access_type == OS_FILE_READ_ONLY) { + create_flag = O_RDONLY; + } else { + create_flag = O_RDWR; + } + } else if (create_mode == OS_FILE_CREATE) { + create_flag = O_RDWR | O_CREAT | O_EXCL; + } else if (create_mode == OS_FILE_CREATE_PATH) { + /* create subdirs along the path if needed */ + *success = os_file_create_subdirs_if_needed(name); + if (!*success) { + return (-1); + } + create_flag = O_RDWR | O_CREAT | O_EXCL; + create_mode = OS_FILE_CREATE; + } else { + create_flag = 0; + ut_error; + } + + if (create_mode == OS_FILE_CREATE) { + file = open(name, create_flag, S_IRUSR | S_IWUSR + | S_IRGRP | S_IWGRP); + } else { + file = open(name, create_flag); + } + + if (file == -1) { + *success = FALSE; + + retry = os_file_handle_error(name, + create_mode == OS_FILE_OPEN ? + "open" : "create"); + if (retry) { + goto try_again; + } +#ifdef USE_FILE_LOCK + } else if (access_type == OS_FILE_READ_WRITE + && os_file_lock(file, name)) { + *success = FALSE; + close(file); + file = -1; +#endif + } else { + *success = TRUE; + } + + return(file); +#endif /* __WIN__ */ +} + +/******************************************************************** +A simple function to open or create a file. */ +UNIV_INTERN +os_file_t +os_file_create_simple_no_error_handling( +/*====================================*/ + /* out, own: handle to the file, not defined + if error, error number can be retrieved with + os_file_get_last_error */ + const char* name, /* in: name of the file or path as a + null-terminated string */ + ulint create_mode,/* in: OS_FILE_OPEN if an existing file + is opened (if does not exist, error), or + OS_FILE_CREATE if a new file is created + (if exists, error) */ + ulint access_type,/* in: OS_FILE_READ_ONLY, + OS_FILE_READ_WRITE, or + OS_FILE_READ_ALLOW_DELETE; the last option is + used by a backup program reading the file */ + ibool* success)/* out: TRUE if succeed, FALSE if error */ +{ +#ifdef __WIN__ + os_file_t file; + DWORD create_flag; + DWORD access; + DWORD attributes = 0; + DWORD share_mode = FILE_SHARE_READ | FILE_SHARE_WRITE; + + ut_a(name); + + if (create_mode == OS_FILE_OPEN) { + create_flag = OPEN_EXISTING; + } else if (create_mode == OS_FILE_CREATE) { + create_flag = CREATE_NEW; + } else { + create_flag = 0; + ut_error; + } + + if (access_type == OS_FILE_READ_ONLY) { + access = GENERIC_READ; + } else if (access_type == OS_FILE_READ_WRITE) { + access = GENERIC_READ | GENERIC_WRITE; + } else if (access_type == OS_FILE_READ_ALLOW_DELETE) { + access = GENERIC_READ; + share_mode = FILE_SHARE_DELETE | FILE_SHARE_READ + | FILE_SHARE_WRITE; /* A backup program has to give + mysqld the maximum freedom to + do what it likes with the + file */ + } else { + access = 0; + ut_error; + } + + file = CreateFile((LPCTSTR) name, + access, + share_mode, + NULL, /* default security attributes */ + create_flag, + attributes, + NULL); /* no template file */ + + if (file == INVALID_HANDLE_VALUE) { + *success = FALSE; + } else { + *success = TRUE; + } + + return(file); +#else /* __WIN__ */ + os_file_t file; + int create_flag; + + ut_a(name); + + if (create_mode == OS_FILE_OPEN) { + if (access_type == OS_FILE_READ_ONLY) { + create_flag = O_RDONLY; + } else { + create_flag = O_RDWR; + } + } else if (create_mode == OS_FILE_CREATE) { + create_flag = O_RDWR | O_CREAT | O_EXCL; + } else { + create_flag = 0; + ut_error; + } + + if (create_mode == OS_FILE_CREATE) { + file = open(name, create_flag, S_IRUSR | S_IWUSR + | S_IRGRP | S_IWGRP); + } else { + file = open(name, create_flag); + } + + if (file == -1) { + *success = FALSE; +#ifdef USE_FILE_LOCK + } else if (access_type == OS_FILE_READ_WRITE + && os_file_lock(file, name)) { + *success = FALSE; + close(file); + file = -1; +#endif + } else { + *success = TRUE; + } + + return(file); +#endif /* __WIN__ */ +} + +/******************************************************************** +Tries to disable OS caching on an opened file descriptor. */ +UNIV_INTERN +void +os_file_set_nocache( +/*================*/ + int fd, /* in: file descriptor to alter */ + const char* file_name, /* in: file name, used in the + diagnostic message */ + const char* operation_name) /* in: "open" or "create"; used in the + diagnostic message */ +{ + /* some versions of Solaris may not have DIRECTIO_ON */ +#if defined(UNIV_SOLARIS) && defined(DIRECTIO_ON) + if (directio(fd, DIRECTIO_ON) == -1) { + int errno_save; + errno_save = (int)errno; + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: Failed to set DIRECTIO_ON " + "on file %s: %s: %s, continuing anyway\n", + file_name, operation_name, strerror(errno_save)); + } +#elif defined(O_DIRECT) + if (fcntl(fd, F_SETFL, O_DIRECT) == -1) { + int errno_save; + errno_save = (int)errno; + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: Failed to set O_DIRECT " + "on file %s: %s: %s, continuing anyway\n", + file_name, operation_name, strerror(errno_save)); + if (errno_save == EINVAL) { + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: O_DIRECT is known to result in " + "'Invalid argument' on Linux on tmpfs, " + "see MySQL Bug#26662\n"); + } + } +#endif +} + +/******************************************************************** +Opens an existing file or creates a new. */ +UNIV_INTERN +os_file_t +os_file_create( +/*===========*/ + /* out, own: handle to the file, not defined + if error, error number can be retrieved with + os_file_get_last_error */ + const char* name, /* in: name of the file or path as a + null-terminated string */ + ulint create_mode,/* in: OS_FILE_OPEN if an existing file + is opened (if does not exist, error), or + OS_FILE_CREATE if a new file is created + (if exists, error), + OS_FILE_OVERWRITE if a new file is created + or an old overwritten; + OS_FILE_OPEN_RAW, if a raw device or disk + partition should be opened */ + ulint purpose,/* in: OS_FILE_AIO, if asynchronous, + non-buffered i/o is desired, + OS_FILE_NORMAL, if any normal file; + NOTE that it also depends on type, os_aio_.. + and srv_.. variables whether we really use + async i/o or unbuffered i/o: look in the + function source code for the exact rules */ + ulint type, /* in: OS_DATA_FILE or OS_LOG_FILE */ + ibool* success)/* out: TRUE if succeed, FALSE if error */ +{ +#ifdef __WIN__ + os_file_t file; + DWORD share_mode = FILE_SHARE_READ; + DWORD create_flag; + DWORD attributes; + ibool retry; +try_again: + ut_a(name); + + if (create_mode == OS_FILE_OPEN_RAW) { + create_flag = OPEN_EXISTING; + share_mode = FILE_SHARE_WRITE; + } else if (create_mode == OS_FILE_OPEN + || create_mode == OS_FILE_OPEN_RETRY) { + create_flag = OPEN_EXISTING; + } else if (create_mode == OS_FILE_CREATE) { + create_flag = CREATE_NEW; + } else if (create_mode == OS_FILE_OVERWRITE) { + create_flag = CREATE_ALWAYS; + } else { + create_flag = 0; + ut_error; + } + + if (purpose == OS_FILE_AIO) { + /* If specified, use asynchronous (overlapped) io and no + buffering of writes in the OS */ + attributes = 0; +#ifdef WIN_ASYNC_IO + if (os_aio_use_native_aio) { + attributes = attributes | FILE_FLAG_OVERLAPPED; + } +#endif +#ifdef UNIV_NON_BUFFERED_IO + if (type == OS_LOG_FILE && srv_flush_log_at_trx_commit == 2) { + /* Do not use unbuffered i/o to log files because + value 2 denotes that we do not flush the log at every + commit, but only once per second */ + } else if (srv_win_file_flush_method + == SRV_WIN_IO_UNBUFFERED) { + attributes = attributes | FILE_FLAG_NO_BUFFERING; + } +#endif + } else if (purpose == OS_FILE_NORMAL) { + attributes = 0; +#ifdef UNIV_NON_BUFFERED_IO + if (type == OS_LOG_FILE && srv_flush_log_at_trx_commit == 2) { + /* Do not use unbuffered i/o to log files because + value 2 denotes that we do not flush the log at every + commit, but only once per second */ + } else if (srv_win_file_flush_method + == SRV_WIN_IO_UNBUFFERED) { + attributes = attributes | FILE_FLAG_NO_BUFFERING; + } +#endif + } else { + attributes = 0; + ut_error; + } + + file = CreateFile((LPCTSTR) name, + GENERIC_READ | GENERIC_WRITE, /* read and write + access */ + share_mode, /* File can be read also by other + processes; we must give the read + permission because of ibbackup. We do + not give the write permission to + others because if one would succeed to + start 2 instances of mysqld on the + SAME files, that could cause severe + database corruption! When opening + raw disk partitions, Microsoft manuals + say that we must give also the write + permission. */ + NULL, /* default security attributes */ + create_flag, + attributes, + NULL); /* no template file */ + + if (file == INVALID_HANDLE_VALUE) { + *success = FALSE; + + /* When srv_file_per_table is on, file creation failure may not + be critical to the whole instance. Do not crash the server in + case of unknown errors. */ + if (srv_file_per_table) { + retry = os_file_handle_error_no_exit(name, + create_mode == OS_FILE_CREATE ? + "create" : "open"); + } else { + retry = os_file_handle_error(name, + create_mode == OS_FILE_CREATE ? + "create" : "open"); + } + + if (retry) { + goto try_again; + } + } else { + *success = TRUE; + } + + return(file); +#else /* __WIN__ */ + os_file_t file; + int create_flag; + ibool retry; + const char* mode_str = NULL; + const char* type_str = NULL; + const char* purpose_str = NULL; + +try_again: + ut_a(name); + + if (create_mode == OS_FILE_OPEN || create_mode == OS_FILE_OPEN_RAW + || create_mode == OS_FILE_OPEN_RETRY) { + mode_str = "OPEN"; + create_flag = O_RDWR; + } else if (create_mode == OS_FILE_CREATE) { + mode_str = "CREATE"; + create_flag = O_RDWR | O_CREAT | O_EXCL; + } else if (create_mode == OS_FILE_OVERWRITE) { + mode_str = "OVERWRITE"; + create_flag = O_RDWR | O_CREAT | O_TRUNC; + } else { + create_flag = 0; + ut_error; + } + + if (type == OS_LOG_FILE) { + type_str = "LOG"; + } else if (type == OS_DATA_FILE) { + type_str = "DATA"; + } else { + ut_error; + } + + if (purpose == OS_FILE_AIO) { + purpose_str = "AIO"; + } else if (purpose == OS_FILE_NORMAL) { + purpose_str = "NORMAL"; + } else { + ut_error; + } + +#if 0 + fprintf(stderr, "Opening file %s, mode %s, type %s, purpose %s\n", + name, mode_str, type_str, purpose_str); +#endif +#ifdef O_SYNC + /* We let O_SYNC only affect log files; note that we map O_DSYNC to + O_SYNC because the datasync options seemed to corrupt files in 2001 + in both Linux and Solaris */ + if (type == OS_LOG_FILE + && srv_unix_file_flush_method == SRV_UNIX_O_DSYNC) { + +# if 0 + fprintf(stderr, "Using O_SYNC for file %s\n", name); +# endif + + create_flag = create_flag | O_SYNC; + } +#endif /* O_SYNC */ + + file = open(name, create_flag, os_innodb_umask); + + if (file == -1) { + *success = FALSE; + + /* When srv_file_per_table is on, file creation failure may not + be critical to the whole instance. Do not crash the server in + case of unknown errors. */ + if (srv_file_per_table) { + retry = os_file_handle_error_no_exit(name, + create_mode == OS_FILE_CREATE ? + "create" : "open"); + } else { + retry = os_file_handle_error(name, + create_mode == OS_FILE_CREATE ? + "create" : "open"); + } + + if (retry) { + goto try_again; + } else { + return(file /* -1 */); + } + } + /* else */ + + *success = TRUE; + + /* We disable OS caching (O_DIRECT) only on data files */ + if (type != OS_LOG_FILE + && srv_unix_file_flush_method == SRV_UNIX_O_DIRECT) { + + os_file_set_nocache(file, name, mode_str); + } + +#ifdef USE_FILE_LOCK + if (create_mode != OS_FILE_OPEN_RAW && os_file_lock(file, name)) { + + if (create_mode == OS_FILE_OPEN_RETRY) { + int i; + ut_print_timestamp(stderr); + fputs(" InnoDB: Retrying to lock" + " the first data file\n", + stderr); + for (i = 0; i < 100; i++) { + os_thread_sleep(1000000); + if (!os_file_lock(file, name)) { + *success = TRUE; + return(file); + } + } + ut_print_timestamp(stderr); + fputs(" InnoDB: Unable to open the first data file\n", + stderr); + } + + *success = FALSE; + close(file); + file = -1; + } +#endif /* USE_FILE_LOCK */ + + return(file); +#endif /* __WIN__ */ +} + +/*************************************************************************** +Deletes a file if it exists. The file has to be closed before calling this. */ +UNIV_INTERN +ibool +os_file_delete_if_exists( +/*=====================*/ + /* out: TRUE if success */ + const char* name) /* in: file path as a null-terminated string */ +{ +#ifdef __WIN__ + BOOL ret; + ulint count = 0; +loop: + /* In Windows, deleting an .ibd file may fail if ibbackup is copying + it */ + + ret = DeleteFile((LPCTSTR)name); + + if (ret) { + return(TRUE); + } + + if (GetLastError() == ERROR_FILE_NOT_FOUND) { + /* the file does not exist, this not an error */ + + return(TRUE); + } + + count++; + + if (count > 100 && 0 == (count % 10)) { + fprintf(stderr, + "InnoDB: Warning: cannot delete file %s\n" + "InnoDB: Are you running ibbackup" + " to back up the file?\n", name); + + os_file_get_last_error(TRUE); /* print error information */ + } + + os_thread_sleep(1000000); /* sleep for a second */ + + if (count > 2000) { + + return(FALSE); + } + + goto loop; +#else + int ret; + + ret = unlink(name); + + if (ret != 0 && errno != ENOENT) { + os_file_handle_error_no_exit(name, "delete"); + + return(FALSE); + } + + return(TRUE); +#endif +} + +/*************************************************************************** +Deletes a file. The file has to be closed before calling this. */ +UNIV_INTERN +ibool +os_file_delete( +/*===========*/ + /* out: TRUE if success */ + const char* name) /* in: file path as a null-terminated string */ +{ +#ifdef __WIN__ + BOOL ret; + ulint count = 0; +loop: + /* In Windows, deleting an .ibd file may fail if ibbackup is copying + it */ + + ret = DeleteFile((LPCTSTR)name); + + if (ret) { + return(TRUE); + } + + if (GetLastError() == ERROR_FILE_NOT_FOUND) { + /* If the file does not exist, we classify this as a 'mild' + error and return */ + + return(FALSE); + } + + count++; + + if (count > 100 && 0 == (count % 10)) { + fprintf(stderr, + "InnoDB: Warning: cannot delete file %s\n" + "InnoDB: Are you running ibbackup" + " to back up the file?\n", name); + + os_file_get_last_error(TRUE); /* print error information */ + } + + os_thread_sleep(1000000); /* sleep for a second */ + + if (count > 2000) { + + return(FALSE); + } + + goto loop; +#else + int ret; + + ret = unlink(name); + + if (ret != 0) { + os_file_handle_error_no_exit(name, "delete"); + + return(FALSE); + } + + return(TRUE); +#endif +} + +/*************************************************************************** +Renames a file (can also move it to another directory). It is safest that the +file is closed before calling this function. */ +UNIV_INTERN +ibool +os_file_rename( +/*===========*/ + /* out: TRUE if success */ + const char* oldpath,/* in: old file path as a null-terminated + string */ + const char* newpath)/* in: new file path */ +{ +#ifdef __WIN__ + BOOL ret; + + ret = MoveFile((LPCTSTR)oldpath, (LPCTSTR)newpath); + + if (ret) { + return(TRUE); + } + + os_file_handle_error_no_exit(oldpath, "rename"); + + return(FALSE); +#else + int ret; + + ret = rename(oldpath, newpath); + + if (ret != 0) { + os_file_handle_error_no_exit(oldpath, "rename"); + + return(FALSE); + } + + return(TRUE); +#endif +} + +/*************************************************************************** +Closes a file handle. In case of error, error number can be retrieved with +os_file_get_last_error. */ +UNIV_INTERN +ibool +os_file_close( +/*==========*/ + /* out: TRUE if success */ + os_file_t file) /* in, own: handle to a file */ +{ +#ifdef __WIN__ + BOOL ret; + + ut_a(file); + + ret = CloseHandle(file); + + if (ret) { + return(TRUE); + } + + os_file_handle_error(NULL, "close"); + + return(FALSE); +#else + int ret; + + ret = close(file); + + if (ret == -1) { + os_file_handle_error(NULL, "close"); + + return(FALSE); + } + + return(TRUE); +#endif +} + +/*************************************************************************** +Closes a file handle. */ +UNIV_INTERN +ibool +os_file_close_no_error_handling( +/*============================*/ + /* out: TRUE if success */ + os_file_t file) /* in, own: handle to a file */ +{ +#ifdef __WIN__ + BOOL ret; + + ut_a(file); + + ret = CloseHandle(file); + + if (ret) { + return(TRUE); + } + + return(FALSE); +#else + int ret; + + ret = close(file); + + if (ret == -1) { + + return(FALSE); + } + + return(TRUE); +#endif +} + +/*************************************************************************** +Gets a file size. */ +UNIV_INTERN +ibool +os_file_get_size( +/*=============*/ + /* out: TRUE if success */ + os_file_t file, /* in: handle to a file */ + ulint* size, /* out: least significant 32 bits of file + size */ + ulint* size_high)/* out: most significant 32 bits of size */ +{ +#ifdef __WIN__ + DWORD high; + DWORD low; + + low = GetFileSize(file, &high); + + if ((low == 0xFFFFFFFF) && (GetLastError() != NO_ERROR)) { + return(FALSE); + } + + *size = low; + *size_high = high; + + return(TRUE); +#else + off_t offs; + + offs = lseek(file, 0, SEEK_END); + + if (offs == ((off_t)-1)) { + + return(FALSE); + } + + if (sizeof(off_t) > 4) { + *size = (ulint)(offs & 0xFFFFFFFFUL); + *size_high = (ulint)(offs >> 32); + } else { + *size = (ulint) offs; + *size_high = 0; + } + + return(TRUE); +#endif +} + +/*************************************************************************** +Gets file size as a 64-bit integer ib_int64_t. */ +UNIV_INTERN +ib_int64_t +os_file_get_size_as_iblonglong( +/*===========================*/ + /* out: size in bytes, -1 if error */ + os_file_t file) /* in: handle to a file */ +{ + ulint size; + ulint size_high; + ibool success; + + success = os_file_get_size(file, &size, &size_high); + + if (!success) { + + return(-1); + } + + return((((ib_int64_t)size_high) << 32) + (ib_int64_t)size); +} + +/*************************************************************************** +Write the specified number of zeros to a newly created file. */ +UNIV_INTERN +ibool +os_file_set_size( +/*=============*/ + /* out: TRUE if success */ + const char* name, /* in: name of the file or path as a + null-terminated string */ + os_file_t file, /* in: handle to a file */ + ulint size, /* in: least significant 32 bits of file + size */ + ulint size_high)/* in: most significant 32 bits of size */ +{ + ib_int64_t current_size; + ib_int64_t desired_size; + ibool ret; + byte* buf; + byte* buf2; + ulint buf_size; + + ut_a(size == (size & 0xFFFFFFFF)); + + current_size = 0; + desired_size = (ib_int64_t)size + (((ib_int64_t)size_high) << 32); + + /* Write up to 1 megabyte at a time. */ + buf_size = ut_min(64, (ulint) (desired_size / UNIV_PAGE_SIZE)) + * UNIV_PAGE_SIZE; + buf2 = ut_malloc(buf_size + UNIV_PAGE_SIZE); + + /* Align the buffer for possible raw i/o */ + buf = ut_align(buf2, UNIV_PAGE_SIZE); + + /* Write buffer full of zeros */ + memset(buf, 0, buf_size); + + if (desired_size >= (ib_int64_t)(100 * 1024 * 1024)) { + + fprintf(stderr, "InnoDB: Progress in MB:"); + } + + while (current_size < desired_size) { + ulint n_bytes; + + if (desired_size - current_size < (ib_int64_t) buf_size) { + n_bytes = (ulint) (desired_size - current_size); + } else { + n_bytes = buf_size; + } + + ret = os_file_write(name, file, buf, + (ulint)(current_size & 0xFFFFFFFF), + (ulint)(current_size >> 32), + n_bytes); + if (!ret) { + ut_free(buf2); + goto error_handling; + } + + /* Print about progress for each 100 MB written */ + if ((ib_int64_t) (current_size + n_bytes) / (ib_int64_t)(100 * 1024 * 1024) + != current_size / (ib_int64_t)(100 * 1024 * 1024)) { + + fprintf(stderr, " %lu00", + (ulong) ((current_size + n_bytes) + / (ib_int64_t)(100 * 1024 * 1024))); + } + + current_size += n_bytes; + } + + if (desired_size >= (ib_int64_t)(100 * 1024 * 1024)) { + + fprintf(stderr, "\n"); + } + + ut_free(buf2); + + ret = os_file_flush(file); + + if (ret) { + return(TRUE); + } + +error_handling: + return(FALSE); +} + +/*************************************************************************** +Truncates a file at its current position. */ +UNIV_INTERN +ibool +os_file_set_eof( +/*============*/ + /* out: TRUE if success */ + FILE* file) /* in: file to be truncated */ +{ +#ifdef __WIN__ + HANDLE h = (HANDLE) _get_osfhandle(fileno(file)); + return(SetEndOfFile(h)); +#else /* __WIN__ */ + return(!ftruncate(fileno(file), ftell(file))); +#endif /* __WIN__ */ +} + +#ifndef __WIN__ +/*************************************************************************** +Wrapper to fsync(2) that retries the call on some errors. +Returns the value 0 if successful; otherwise the value -1 is returned and +the global variable errno is set to indicate the error. */ + +static +int +os_file_fsync( +/*==========*/ + /* out: 0 if success, -1 otherwise */ + os_file_t file) /* in: handle to a file */ +{ + int ret; + int failures; + ibool retry; + + failures = 0; + + do { + ret = fsync(file); + + os_n_fsyncs++; + + if (ret == -1 && errno == ENOLCK) { + + if (failures % 100 == 0) { + + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: fsync(): " + "No locks available; retrying\n"); + } + + os_thread_sleep(200000 /* 0.2 sec */); + + failures++; + + retry = TRUE; + } else { + + retry = FALSE; + } + } while (retry); + + return(ret); +} +#endif /* !__WIN__ */ + +/*************************************************************************** +Flushes the write buffers of a given file to the disk. */ +UNIV_INTERN +ibool +os_file_flush( +/*==========*/ + /* out: TRUE if success */ + os_file_t file) /* in, own: handle to a file */ +{ +#ifdef __WIN__ + BOOL ret; + + ut_a(file); + + os_n_fsyncs++; + + ret = FlushFileBuffers(file); + + if (ret) { + return(TRUE); + } + + /* Since Windows returns ERROR_INVALID_FUNCTION if the 'file' is + actually a raw device, we choose to ignore that error if we are using + raw disks */ + + if (srv_start_raw_disk_in_use && GetLastError() + == ERROR_INVALID_FUNCTION) { + return(TRUE); + } + + os_file_handle_error(NULL, "flush"); + + /* It is a fatal error if a file flush does not succeed, because then + the database can get corrupt on disk */ + ut_error; + + return(FALSE); +#else + int ret; + +#if defined(HAVE_DARWIN_THREADS) +# ifndef F_FULLFSYNC + /* The following definition is from the Mac OS X 10.3 <sys/fcntl.h> */ +# define F_FULLFSYNC 51 /* fsync + ask the drive to flush to the media */ +# elif F_FULLFSYNC != 51 +# error "F_FULLFSYNC != 51: ABI incompatibility with Mac OS X 10.3" +# endif + /* Apple has disabled fsync() for internal disk drives in OS X. That + caused corruption for a user when he tested a power outage. Let us in + OS X use a nonstandard flush method recommended by an Apple + engineer. */ + + if (!srv_have_fullfsync) { + /* If we are not on an operating system that supports this, + then fall back to a plain fsync. */ + + ret = os_file_fsync(file); + } else { + ret = fcntl(file, F_FULLFSYNC, NULL); + + if (ret) { + /* If we are not on a file system that supports this, + then fall back to a plain fsync. */ + ret = os_file_fsync(file); + } + } +#else + ret = os_file_fsync(file); +#endif + + if (ret == 0) { + return(TRUE); + } + + /* Since Linux returns EINVAL if the 'file' is actually a raw device, + we choose to ignore that error if we are using raw disks */ + + if (srv_start_raw_disk_in_use && errno == EINVAL) { + + return(TRUE); + } + + ut_print_timestamp(stderr); + + fprintf(stderr, + " InnoDB: Error: the OS said file flush did not succeed\n"); + + os_file_handle_error(NULL, "flush"); + + /* It is a fatal error if a file flush does not succeed, because then + the database can get corrupt on disk */ + ut_error; + + return(FALSE); +#endif +} + +#ifndef __WIN__ +/*********************************************************************** +Does a synchronous read operation in Posix. */ +static +ssize_t +os_file_pread( +/*==========*/ + /* out: number of bytes read, -1 if error */ + os_file_t file, /* in: handle to a file */ + void* buf, /* in: buffer where to read */ + ulint n, /* in: number of bytes to read */ + ulint offset, /* in: least significant 32 bits of file + offset from where to read */ + ulint offset_high) /* in: most significant 32 bits of + offset */ +{ + off_t offs; + ssize_t n_bytes; + + ut_a((offset & 0xFFFFFFFFUL) == offset); + + /* If off_t is > 4 bytes in size, then we assume we can pass a + 64-bit address */ + + if (sizeof(off_t) > 4) { + offs = (off_t)offset + (((off_t)offset_high) << 32); + + } else { + offs = (off_t)offset; + + if (offset_high > 0) { + fprintf(stderr, + "InnoDB: Error: file read at offset > 4 GB\n"); + } + } + + os_n_file_reads++; + +#if defined(HAVE_PREAD) && !defined(HAVE_BROKEN_PREAD) + os_mutex_enter(os_file_count_mutex); + os_file_n_pending_preads++; + os_n_pending_reads++; + os_mutex_exit(os_file_count_mutex); + + n_bytes = pread(file, buf, (ssize_t)n, offs); + + os_mutex_enter(os_file_count_mutex); + os_file_n_pending_preads--; + os_n_pending_reads--; + os_mutex_exit(os_file_count_mutex); + + return(n_bytes); +#else + { + off_t ret_offset; + ssize_t ret; + ulint i; + + os_mutex_enter(os_file_count_mutex); + os_n_pending_reads++; + os_mutex_exit(os_file_count_mutex); + + /* Protect the seek / read operation with a mutex */ + i = ((ulint) file) % OS_FILE_N_SEEK_MUTEXES; + + os_mutex_enter(os_file_seek_mutexes[i]); + + ret_offset = lseek(file, offs, SEEK_SET); + + if (ret_offset < 0) { + ret = -1; + } else { + ret = read(file, buf, (ssize_t)n); + } + + os_mutex_exit(os_file_seek_mutexes[i]); + + os_mutex_enter(os_file_count_mutex); + os_n_pending_reads--; + os_mutex_exit(os_file_count_mutex); + + return(ret); + } +#endif +} + +/*********************************************************************** +Does a synchronous write operation in Posix. */ +static +ssize_t +os_file_pwrite( +/*===========*/ + /* out: number of bytes written, -1 if error */ + os_file_t file, /* in: handle to a file */ + const void* buf, /* in: buffer from where to write */ + ulint n, /* in: number of bytes to write */ + ulint offset, /* in: least significant 32 bits of file + offset where to write */ + ulint offset_high) /* in: most significant 32 bits of + offset */ +{ + ssize_t ret; + off_t offs; + + ut_a((offset & 0xFFFFFFFFUL) == offset); + + /* If off_t is > 4 bytes in size, then we assume we can pass a + 64-bit address */ + + if (sizeof(off_t) > 4) { + offs = (off_t)offset + (((off_t)offset_high) << 32); + } else { + offs = (off_t)offset; + + if (offset_high > 0) { + fprintf(stderr, + "InnoDB: Error: file write" + " at offset > 4 GB\n"); + } + } + + os_n_file_writes++; + +#if defined(HAVE_PWRITE) && !defined(HAVE_BROKEN_PREAD) + os_mutex_enter(os_file_count_mutex); + os_file_n_pending_pwrites++; + os_n_pending_writes++; + os_mutex_exit(os_file_count_mutex); + + ret = pwrite(file, buf, (ssize_t)n, offs); + + os_mutex_enter(os_file_count_mutex); + os_file_n_pending_pwrites--; + os_n_pending_writes--; + os_mutex_exit(os_file_count_mutex); + +# ifdef UNIV_DO_FLUSH + if (srv_unix_file_flush_method != SRV_UNIX_LITTLESYNC + && srv_unix_file_flush_method != SRV_UNIX_NOSYNC + && !os_do_not_call_flush_at_each_write) { + + /* Always do fsync to reduce the probability that when + the OS crashes, a database page is only partially + physically written to disk. */ + + ut_a(TRUE == os_file_flush(file)); + } +# endif /* UNIV_DO_FLUSH */ + + return(ret); +#else + { + off_t ret_offset; + ulint i; + + os_mutex_enter(os_file_count_mutex); + os_n_pending_writes++; + os_mutex_exit(os_file_count_mutex); + + /* Protect the seek / write operation with a mutex */ + i = ((ulint) file) % OS_FILE_N_SEEK_MUTEXES; + + os_mutex_enter(os_file_seek_mutexes[i]); + + ret_offset = lseek(file, offs, SEEK_SET); + + if (ret_offset < 0) { + ret = -1; + + goto func_exit; + } + + ret = write(file, buf, (ssize_t)n); + +# ifdef UNIV_DO_FLUSH + if (srv_unix_file_flush_method != SRV_UNIX_LITTLESYNC + && srv_unix_file_flush_method != SRV_UNIX_NOSYNC + && !os_do_not_call_flush_at_each_write) { + + /* Always do fsync to reduce the probability that when + the OS crashes, a database page is only partially + physically written to disk. */ + + ut_a(TRUE == os_file_flush(file)); + } +# endif /* UNIV_DO_FLUSH */ + +func_exit: + os_mutex_exit(os_file_seek_mutexes[i]); + + os_mutex_enter(os_file_count_mutex); + os_n_pending_writes--; + os_mutex_exit(os_file_count_mutex); + + return(ret); + } +#endif +} +#endif + +/*********************************************************************** +Requests a synchronous positioned read operation. */ +UNIV_INTERN +ibool +os_file_read( +/*=========*/ + /* out: TRUE if request was + successful, FALSE if fail */ + os_file_t file, /* in: handle to a file */ + void* buf, /* in: buffer where to read */ + ulint offset, /* in: least significant 32 bits of file + offset where to read */ + ulint offset_high, /* in: most significant 32 bits of + offset */ + ulint n) /* in: number of bytes to read */ +{ +#ifdef __WIN__ + BOOL ret; + DWORD len; + DWORD ret2; + DWORD low; + DWORD high; + ibool retry; + ulint i; + + ut_a((offset & 0xFFFFFFFFUL) == offset); + + os_n_file_reads++; + os_bytes_read_since_printout += n; + +try_again: + ut_ad(file); + ut_ad(buf); + ut_ad(n > 0); + + low = (DWORD) offset; + high = (DWORD) offset_high; + + os_mutex_enter(os_file_count_mutex); + os_n_pending_reads++; + os_mutex_exit(os_file_count_mutex); + + /* Protect the seek / read operation with a mutex */ + i = ((ulint) file) % OS_FILE_N_SEEK_MUTEXES; + + os_mutex_enter(os_file_seek_mutexes[i]); + + ret2 = SetFilePointer(file, low, &high, FILE_BEGIN); + + if (ret2 == 0xFFFFFFFF && GetLastError() != NO_ERROR) { + + os_mutex_exit(os_file_seek_mutexes[i]); + + os_mutex_enter(os_file_count_mutex); + os_n_pending_reads--; + os_mutex_exit(os_file_count_mutex); + + goto error_handling; + } + + ret = ReadFile(file, buf, (DWORD) n, &len, NULL); + + os_mutex_exit(os_file_seek_mutexes[i]); + + os_mutex_enter(os_file_count_mutex); + os_n_pending_reads--; + os_mutex_exit(os_file_count_mutex); + + if (ret && len == n) { + return(TRUE); + } +#else + ibool retry; + ssize_t ret; + + os_bytes_read_since_printout += n; + +try_again: + ret = os_file_pread(file, buf, n, offset, offset_high); + + if ((ulint)ret == n) { + + return(TRUE); + } + + fprintf(stderr, + "InnoDB: Error: tried to read %lu bytes at offset %lu %lu.\n" + "InnoDB: Was only able to read %ld.\n", + (ulong)n, (ulong)offset_high, + (ulong)offset, (long)ret); +#endif +#ifdef __WIN__ +error_handling: +#endif + retry = os_file_handle_error(NULL, "read"); + + if (retry) { + goto try_again; + } + + fprintf(stderr, + "InnoDB: Fatal error: cannot read from file." + " OS error number %lu.\n", +#ifdef __WIN__ + (ulong) GetLastError() +#else + (ulong) errno +#endif + ); + fflush(stderr); + + ut_error; + + return(FALSE); +} + +/*********************************************************************** +Requests a synchronous positioned read operation. This function does not do +any error handling. In case of error it returns FALSE. */ +UNIV_INTERN +ibool +os_file_read_no_error_handling( +/*===========================*/ + /* out: TRUE if request was + successful, FALSE if fail */ + os_file_t file, /* in: handle to a file */ + void* buf, /* in: buffer where to read */ + ulint offset, /* in: least significant 32 bits of file + offset where to read */ + ulint offset_high, /* in: most significant 32 bits of + offset */ + ulint n) /* in: number of bytes to read */ +{ +#ifdef __WIN__ + BOOL ret; + DWORD len; + DWORD ret2; + DWORD low; + DWORD high; + ibool retry; + ulint i; + + ut_a((offset & 0xFFFFFFFFUL) == offset); + + os_n_file_reads++; + os_bytes_read_since_printout += n; + +try_again: + ut_ad(file); + ut_ad(buf); + ut_ad(n > 0); + + low = (DWORD) offset; + high = (DWORD) offset_high; + + os_mutex_enter(os_file_count_mutex); + os_n_pending_reads++; + os_mutex_exit(os_file_count_mutex); + + /* Protect the seek / read operation with a mutex */ + i = ((ulint) file) % OS_FILE_N_SEEK_MUTEXES; + + os_mutex_enter(os_file_seek_mutexes[i]); + + ret2 = SetFilePointer(file, low, &high, FILE_BEGIN); + + if (ret2 == 0xFFFFFFFF && GetLastError() != NO_ERROR) { + + os_mutex_exit(os_file_seek_mutexes[i]); + + os_mutex_enter(os_file_count_mutex); + os_n_pending_reads--; + os_mutex_exit(os_file_count_mutex); + + goto error_handling; + } + + ret = ReadFile(file, buf, (DWORD) n, &len, NULL); + + os_mutex_exit(os_file_seek_mutexes[i]); + + os_mutex_enter(os_file_count_mutex); + os_n_pending_reads--; + os_mutex_exit(os_file_count_mutex); + + if (ret && len == n) { + return(TRUE); + } +#else + ibool retry; + ssize_t ret; + + os_bytes_read_since_printout += n; + +try_again: + ret = os_file_pread(file, buf, n, offset, offset_high); + + if ((ulint)ret == n) { + + return(TRUE); + } +#endif +#ifdef __WIN__ +error_handling: +#endif + retry = os_file_handle_error_no_exit(NULL, "read"); + + if (retry) { + goto try_again; + } + + return(FALSE); +} + +/*********************************************************************** +Rewind file to its start, read at most size - 1 bytes from it to str, and +NUL-terminate str. All errors are silently ignored. This function is +mostly meant to be used with temporary files. */ +UNIV_INTERN +void +os_file_read_string( +/*================*/ + FILE* file, /* in: file to read from */ + char* str, /* in: buffer where to read */ + ulint size) /* in: size of buffer */ +{ + size_t flen; + + if (size == 0) { + return; + } + + rewind(file); + flen = fread(str, 1, size - 1, file); + str[flen] = '\0'; +} + +/*********************************************************************** +Requests a synchronous write operation. */ +UNIV_INTERN +ibool +os_file_write( +/*==========*/ + /* out: TRUE if request was + successful, FALSE if fail */ + const char* name, /* in: name of the file or path as a + null-terminated string */ + os_file_t file, /* in: handle to a file */ + const void* buf, /* in: buffer from which to write */ + ulint offset, /* in: least significant 32 bits of file + offset where to write */ + ulint offset_high, /* in: most significant 32 bits of + offset */ + ulint n) /* in: number of bytes to write */ +{ +#ifdef __WIN__ + BOOL ret; + DWORD len; + DWORD ret2; + DWORD low; + DWORD high; + ulint i; + ulint n_retries = 0; + ulint err; + + ut_a((offset & 0xFFFFFFFF) == offset); + + os_n_file_writes++; + + ut_ad(file); + ut_ad(buf); + ut_ad(n > 0); +retry: + low = (DWORD) offset; + high = (DWORD) offset_high; + + os_mutex_enter(os_file_count_mutex); + os_n_pending_writes++; + os_mutex_exit(os_file_count_mutex); + + /* Protect the seek / write operation with a mutex */ + i = ((ulint) file) % OS_FILE_N_SEEK_MUTEXES; + + os_mutex_enter(os_file_seek_mutexes[i]); + + ret2 = SetFilePointer(file, low, &high, FILE_BEGIN); + + if (ret2 == 0xFFFFFFFF && GetLastError() != NO_ERROR) { + + os_mutex_exit(os_file_seek_mutexes[i]); + + os_mutex_enter(os_file_count_mutex); + os_n_pending_writes--; + os_mutex_exit(os_file_count_mutex); + + ut_print_timestamp(stderr); + + fprintf(stderr, + " InnoDB: Error: File pointer positioning to" + " file %s failed at\n" + "InnoDB: offset %lu %lu. Operating system" + " error number %lu.\n" + "InnoDB: Some operating system error numbers" + " are described at\n" + "InnoDB: " + "http://dev.mysql.com/doc/refman/5.1/en/" + "operating-system-error-codes.html\n", + name, (ulong) offset_high, (ulong) offset, + (ulong) GetLastError()); + + return(FALSE); + } + + ret = WriteFile(file, buf, (DWORD) n, &len, NULL); + + /* Always do fsync to reduce the probability that when the OS crashes, + a database page is only partially physically written to disk. */ + +# ifdef UNIV_DO_FLUSH + if (!os_do_not_call_flush_at_each_write) { + ut_a(TRUE == os_file_flush(file)); + } +# endif /* UNIV_DO_FLUSH */ + + os_mutex_exit(os_file_seek_mutexes[i]); + + os_mutex_enter(os_file_count_mutex); + os_n_pending_writes--; + os_mutex_exit(os_file_count_mutex); + + if (ret && len == n) { + + return(TRUE); + } + + /* If some background file system backup tool is running, then, at + least in Windows 2000, we may get here a specific error. Let us + retry the operation 100 times, with 1 second waits. */ + + if (GetLastError() == ERROR_LOCK_VIOLATION && n_retries < 100) { + + os_thread_sleep(1000000); + + n_retries++; + + goto retry; + } + + if (!os_has_said_disk_full) { + + err = (ulint)GetLastError(); + + ut_print_timestamp(stderr); + + fprintf(stderr, + " InnoDB: Error: Write to file %s failed" + " at offset %lu %lu.\n" + "InnoDB: %lu bytes should have been written," + " only %lu were written.\n" + "InnoDB: Operating system error number %lu.\n" + "InnoDB: Check that your OS and file system" + " support files of this size.\n" + "InnoDB: Check also that the disk is not full" + " or a disk quota exceeded.\n", + name, (ulong) offset_high, (ulong) offset, + (ulong) n, (ulong) len, (ulong) err); + + if (strerror((int)err) != NULL) { + fprintf(stderr, + "InnoDB: Error number %lu means '%s'.\n", + (ulong) err, strerror((int)err)); + } + + fprintf(stderr, + "InnoDB: Some operating system error numbers" + " are described at\n" + "InnoDB: " + "http://dev.mysql.com/doc/refman/5.1/en/" + "operating-system-error-codes.html\n"); + + os_has_said_disk_full = TRUE; + } + + return(FALSE); +#else + ssize_t ret; + + ret = os_file_pwrite(file, buf, n, offset, offset_high); + + if ((ulint)ret == n) { + + return(TRUE); + } + + if (!os_has_said_disk_full) { + + ut_print_timestamp(stderr); + + fprintf(stderr, + " InnoDB: Error: Write to file %s failed" + " at offset %lu %lu.\n" + "InnoDB: %lu bytes should have been written," + " only %ld were written.\n" + "InnoDB: Operating system error number %lu.\n" + "InnoDB: Check that your OS and file system" + " support files of this size.\n" + "InnoDB: Check also that the disk is not full" + " or a disk quota exceeded.\n", + name, offset_high, offset, n, (long int)ret, + (ulint)errno); + if (strerror(errno) != NULL) { + fprintf(stderr, + "InnoDB: Error number %lu means '%s'.\n", + (ulint)errno, strerror(errno)); + } + + fprintf(stderr, + "InnoDB: Some operating system error numbers" + " are described at\n" + "InnoDB: " + "http://dev.mysql.com/doc/refman/5.1/en/" + "operating-system-error-codes.html\n"); + + os_has_said_disk_full = TRUE; + } + + return(FALSE); +#endif +} + +/*********************************************************************** +Check the existence and type of the given file. */ +UNIV_INTERN +ibool +os_file_status( +/*===========*/ + /* out: TRUE if call succeeded */ + const char* path, /* in: pathname of the file */ + ibool* exists, /* out: TRUE if file exists */ + os_file_type_t* type) /* out: type of the file (if it exists) */ +{ +#ifdef __WIN__ + int ret; + struct _stat statinfo; + + ret = _stat(path, &statinfo); + if (ret && (errno == ENOENT || errno == ENOTDIR)) { + /* file does not exist */ + *exists = FALSE; + return(TRUE); + } else if (ret) { + /* file exists, but stat call failed */ + + os_file_handle_error_no_exit(path, "stat"); + + return(FALSE); + } + + if (_S_IFDIR & statinfo.st_mode) { + *type = OS_FILE_TYPE_DIR; + } else if (_S_IFREG & statinfo.st_mode) { + *type = OS_FILE_TYPE_FILE; + } else { + *type = OS_FILE_TYPE_UNKNOWN; + } + + *exists = TRUE; + + return(TRUE); +#else + int ret; + struct stat statinfo; + + ret = stat(path, &statinfo); + if (ret && (errno == ENOENT || errno == ENOTDIR)) { + /* file does not exist */ + *exists = FALSE; + return(TRUE); + } else if (ret) { + /* file exists, but stat call failed */ + + os_file_handle_error_no_exit(path, "stat"); + + return(FALSE); + } + + if (S_ISDIR(statinfo.st_mode)) { + *type = OS_FILE_TYPE_DIR; + } else if (S_ISLNK(statinfo.st_mode)) { + *type = OS_FILE_TYPE_LINK; + } else if (S_ISREG(statinfo.st_mode)) { + *type = OS_FILE_TYPE_FILE; + } else { + *type = OS_FILE_TYPE_UNKNOWN; + } + + *exists = TRUE; + + return(TRUE); +#endif +} + +/*********************************************************************** +This function returns information about the specified file */ +UNIV_INTERN +ibool +os_file_get_status( +/*===============*/ + /* out: TRUE if stat + information found */ + const char* path, /* in: pathname of the file */ + os_file_stat_t* stat_info) /* information of a file in a + directory */ +{ +#ifdef __WIN__ + int ret; + struct _stat statinfo; + + ret = _stat(path, &statinfo); + if (ret && (errno == ENOENT || errno == ENOTDIR)) { + /* file does not exist */ + + return(FALSE); + } else if (ret) { + /* file exists, but stat call failed */ + + os_file_handle_error_no_exit(path, "stat"); + + return(FALSE); + } + if (_S_IFDIR & statinfo.st_mode) { + stat_info->type = OS_FILE_TYPE_DIR; + } else if (_S_IFREG & statinfo.st_mode) { + stat_info->type = OS_FILE_TYPE_FILE; + } else { + stat_info->type = OS_FILE_TYPE_UNKNOWN; + } + + stat_info->ctime = statinfo.st_ctime; + stat_info->atime = statinfo.st_atime; + stat_info->mtime = statinfo.st_mtime; + stat_info->size = statinfo.st_size; + + return(TRUE); +#else + int ret; + struct stat statinfo; + + ret = stat(path, &statinfo); + + if (ret && (errno == ENOENT || errno == ENOTDIR)) { + /* file does not exist */ + + return(FALSE); + } else if (ret) { + /* file exists, but stat call failed */ + + os_file_handle_error_no_exit(path, "stat"); + + return(FALSE); + } + + if (S_ISDIR(statinfo.st_mode)) { + stat_info->type = OS_FILE_TYPE_DIR; + } else if (S_ISLNK(statinfo.st_mode)) { + stat_info->type = OS_FILE_TYPE_LINK; + } else if (S_ISREG(statinfo.st_mode)) { + stat_info->type = OS_FILE_TYPE_FILE; + } else { + stat_info->type = OS_FILE_TYPE_UNKNOWN; + } + + stat_info->ctime = statinfo.st_ctime; + stat_info->atime = statinfo.st_atime; + stat_info->mtime = statinfo.st_mtime; + stat_info->size = statinfo.st_size; + + return(TRUE); +#endif +} + +/* path name separator character */ +#ifdef __WIN__ +# define OS_FILE_PATH_SEPARATOR '\\' +#else +# define OS_FILE_PATH_SEPARATOR '/' +#endif + +/******************************************************************** +The function os_file_dirname returns a directory component of a +null-terminated pathname string. In the usual case, dirname returns +the string up to, but not including, the final '/', and basename +is the component following the final '/'. Trailing '/' charac� +ters are not counted as part of the pathname. + +If path does not contain a slash, dirname returns the string ".". + +Concatenating the string returned by dirname, a "/", and the basename +yields a complete pathname. + +The return value is a copy of the directory component of the pathname. +The copy is allocated from heap. It is the caller responsibility +to free it after it is no longer needed. + +The following list of examples (taken from SUSv2) shows the strings +returned by dirname and basename for different paths: + + path dirname basename + "/usr/lib" "/usr" "lib" + "/usr/" "/" "usr" + "usr" "." "usr" + "/" "/" "/" + "." "." "." + ".." "." ".." +*/ +UNIV_INTERN +char* +os_file_dirname( +/*============*/ + /* out, own: directory component of the + pathname */ + const char* path) /* in: pathname */ +{ + /* Find the offset of the last slash */ + const char* last_slash = strrchr(path, OS_FILE_PATH_SEPARATOR); + if (!last_slash) { + /* No slash in the path, return "." */ + + return(mem_strdup(".")); + } + + /* Ok, there is a slash */ + + if (last_slash == path) { + /* last slash is the first char of the path */ + + return(mem_strdup("/")); + } + + /* Non-trivial directory component */ + + return(mem_strdupl(path, last_slash - path)); +} + +/******************************************************************** +Creates all missing subdirectories along the given path. */ +UNIV_INTERN +ibool +os_file_create_subdirs_if_needed( +/*=============================*/ + /* out: TRUE if call succeeded + FALSE otherwise */ + const char* path) /* in: path name */ +{ + char* subdir; + ibool success, subdir_exists; + os_file_type_t type; + + subdir = os_file_dirname(path); + if (strlen(subdir) == 1 + && (*subdir == OS_FILE_PATH_SEPARATOR || *subdir == '.')) { + /* subdir is root or cwd, nothing to do */ + mem_free(subdir); + + return(TRUE); + } + + /* Test if subdir exists */ + success = os_file_status(subdir, &subdir_exists, &type); + if (success && !subdir_exists) { + /* subdir does not exist, create it */ + success = os_file_create_subdirs_if_needed(subdir); + if (!success) { + mem_free(subdir); + + return(FALSE); + } + success = os_file_create_directory(subdir, FALSE); + } + + mem_free(subdir); + + return(success); +} + +/******************************************************************** +Returns a pointer to the nth slot in the aio array. */ +static +os_aio_slot_t* +os_aio_array_get_nth_slot( +/*======================*/ + /* out: pointer to slot */ + os_aio_array_t* array, /* in: aio array */ + ulint index) /* in: index of the slot */ +{ + ut_a(index < array->n_slots); + + return((array->slots) + index); +} + +/**************************************************************************** +Creates an aio wait array. */ +static +os_aio_array_t* +os_aio_array_create( +/*================*/ + /* out, own: aio array */ + ulint n, /* in: maximum number of pending aio operations + allowed; n must be divisible by n_segments */ + ulint n_segments) /* in: number of segments in the aio array */ +{ + os_aio_array_t* array; + ulint i; + os_aio_slot_t* slot; +#ifdef WIN_ASYNC_IO + OVERLAPPED* over; +#endif + ut_a(n > 0); + ut_a(n_segments > 0); + + array = ut_malloc(sizeof(os_aio_array_t)); + + array->mutex = os_mutex_create(NULL); + array->not_full = os_event_create(NULL); + array->is_empty = os_event_create(NULL); + + os_event_set(array->is_empty); + + array->n_slots = n; + array->n_segments = n_segments; + array->n_reserved = 0; + array->slots = ut_malloc(n * sizeof(os_aio_slot_t)); +#ifdef __WIN__ + array->native_events = ut_malloc(n * sizeof(os_native_event_t)); +#endif + for (i = 0; i < n; i++) { + slot = os_aio_array_get_nth_slot(array, i); + + slot->pos = i; + slot->reserved = FALSE; +#ifdef WIN_ASYNC_IO + slot->event = os_event_create(NULL); + + over = &(slot->control); + + over->hEvent = slot->event->handle; + + *((array->native_events) + i) = over->hEvent; +#endif + } + + return(array); +} + +/**************************************************************************** +Initializes the asynchronous io system. Calls also os_io_init_simple. +Creates a separate aio array for +non-ibuf read and write, a third aio array for the ibuf i/o, with just one +segment, two aio arrays for log reads and writes with one segment, and a +synchronous aio array of the specified size. The combined number of segments +in the three first aio arrays is the parameter n_segments given to the +function. The caller must create an i/o handler thread for each segment in +the four first arrays, but not for the sync aio array. */ +UNIV_INTERN +void +os_aio_init( +/*========*/ + ulint n, /* in: maximum number of pending aio operations + allowed; n must be divisible by n_segments */ +// ulint n_segments, /* in: combined number of segments in the four +// first aio arrays; must be >= 4 */ + ulint n_read_threads, /* n_segments == 2 + n_read_threads + n_write_threads*/ + ulint n_write_threads, /**/ + ulint n_slots_sync) /* in: number of slots in the sync aio array */ +{ + ulint n_read_segs; + ulint n_write_segs; + ulint n_per_seg; + ulint i; + + ulint n_segments = 2 + n_read_threads + n_write_threads; + + ut_ad(n % n_segments == 0); + ut_ad(n_segments >= 4); + + os_io_init_simple(); + + for (i = 0; i < n_segments; i++) { + srv_set_io_thread_op_info(i, "not started yet"); + } + + n_per_seg = n / n_segments; + n_write_segs = n_write_threads; + n_read_segs = n_read_threads; + + /* fprintf(stderr, "Array n per seg %lu\n", n_per_seg); */ + + os_aio_ibuf_array = os_aio_array_create(n_per_seg, 1); + + srv_io_thread_function[0] = "insert buffer thread"; + + os_aio_log_array = os_aio_array_create(n_per_seg, 1); + + srv_io_thread_function[1] = "log thread"; + + os_aio_read_array = os_aio_array_create(n_read_segs * n_per_seg, + n_read_segs); + for (i = 2; i < 2 + n_read_segs; i++) { + ut_a(i < SRV_MAX_N_IO_THREADS); + srv_io_thread_function[i] = "read thread"; + } + + os_aio_write_array = os_aio_array_create(n_write_segs * n_per_seg, + n_write_segs); + for (i = 2 + n_read_segs; i < n_segments; i++) { + ut_a(i < SRV_MAX_N_IO_THREADS); + srv_io_thread_function[i] = "write thread"; + } + + os_aio_sync_array = os_aio_array_create(n_slots_sync, 1); + + os_aio_n_segments = n_segments; + + os_aio_validate(); + + os_aio_segment_wait_events = ut_malloc(n_segments * sizeof(void*)); + + for (i = 0; i < n_segments; i++) { + os_aio_segment_wait_events[i] = os_event_create(NULL); + } + + os_last_printout = time(NULL); + +} + +#ifdef WIN_ASYNC_IO +/**************************************************************************** +Wakes up all async i/o threads in the array in Windows async i/o at +shutdown. */ +static +void +os_aio_array_wake_win_aio_at_shutdown( +/*==================================*/ + os_aio_array_t* array) /* in: aio array */ +{ + ulint i; + + for (i = 0; i < array->n_slots; i++) { + + os_event_set((array->slots + i)->event); + } +} +#endif + +/**************************************************************************** +Wakes up all async i/o threads so that they know to exit themselves in +shutdown. */ +UNIV_INTERN +void +os_aio_wake_all_threads_at_shutdown(void) +/*=====================================*/ +{ + ulint i; + +#ifdef WIN_ASYNC_IO + /* This code wakes up all ai/o threads in Windows native aio */ + os_aio_array_wake_win_aio_at_shutdown(os_aio_read_array); + os_aio_array_wake_win_aio_at_shutdown(os_aio_write_array); + os_aio_array_wake_win_aio_at_shutdown(os_aio_ibuf_array); + os_aio_array_wake_win_aio_at_shutdown(os_aio_log_array); +#endif + /* This loop wakes up all simulated ai/o threads */ + + for (i = 0; i < os_aio_n_segments; i++) { + + os_event_set(os_aio_segment_wait_events[i]); + } +} + +/**************************************************************************** +Waits until there are no pending writes in os_aio_write_array. There can +be other, synchronous, pending writes. */ +UNIV_INTERN +void +os_aio_wait_until_no_pending_writes(void) +/*=====================================*/ +{ + os_event_wait(os_aio_write_array->is_empty); +} + +/************************************************************************** +Calculates segment number for a slot. */ +static +ulint +os_aio_get_segment_no_from_slot( +/*============================*/ + /* out: segment number (which is the number + used by, for example, i/o-handler threads) */ + os_aio_array_t* array, /* in: aio wait array */ + os_aio_slot_t* slot) /* in: slot in this array */ +{ + ulint segment; + ulint seg_len; + + if (array == os_aio_ibuf_array) { + segment = 0; + + } else if (array == os_aio_log_array) { + segment = 1; + + } else if (array == os_aio_read_array) { + seg_len = os_aio_read_array->n_slots + / os_aio_read_array->n_segments; + + segment = 2 + slot->pos / seg_len; + } else { + ut_a(array == os_aio_write_array); + seg_len = os_aio_write_array->n_slots + / os_aio_write_array->n_segments; + + segment = os_aio_read_array->n_segments + 2 + + slot->pos / seg_len; + } + + return(segment); +} + +/************************************************************************** +Calculates local segment number and aio array from global segment number. */ +static +ulint +os_aio_get_array_and_local_segment( +/*===============================*/ + /* out: local segment number within + the aio array */ + os_aio_array_t** array, /* out: aio wait array */ + ulint global_segment)/* in: global segment number */ +{ + ulint segment; + + ut_a(global_segment < os_aio_n_segments); + + if (global_segment == 0) { + *array = os_aio_ibuf_array; + segment = 0; + + } else if (global_segment == 1) { + *array = os_aio_log_array; + segment = 0; + + } else if (global_segment < os_aio_read_array->n_segments + 2) { + *array = os_aio_read_array; + + segment = global_segment - 2; + } else { + *array = os_aio_write_array; + + segment = global_segment - (os_aio_read_array->n_segments + 2); + } + + return(segment); +} + +/*********************************************************************** +Requests for a slot in the aio array. If no slot is available, waits until +not_full-event becomes signaled. */ +static +os_aio_slot_t* +os_aio_array_reserve_slot( +/*======================*/ + /* out: pointer to slot */ + ulint type, /* in: OS_FILE_READ or OS_FILE_WRITE */ + os_aio_array_t* array, /* in: aio array */ + fil_node_t* message1,/* in: message to be passed along with + the aio operation */ + void* message2,/* in: message to be passed along with + the aio operation */ + os_file_t file, /* in: file handle */ + const char* name, /* in: name of the file or path as a + null-terminated string */ + void* buf, /* in: buffer where to read or from which + to write */ + ulint offset, /* in: least significant 32 bits of file + offset */ + ulint offset_high, /* in: most significant 32 bits of + offset */ + ulint len) /* in: length of the block to read or write */ +{ + os_aio_slot_t* slot; +#ifdef WIN_ASYNC_IO + OVERLAPPED* control; +#endif + ulint i; + ulint prim_segment; + ulint n; + + n = array->n_slots / array->n_segments; + /* 64 blocks' striping ( aligning max(BUF_READ_AHEAD_AREA) ) */ + prim_segment = ( offset >> (UNIV_PAGE_SIZE_SHIFT + 6) ) % (array->n_segments); + +loop: + os_mutex_enter(array->mutex); + + if (array->n_reserved == array->n_slots) { + os_mutex_exit(array->mutex); + + if (!os_aio_use_native_aio) { + /* If the handler threads are suspended, wake them + so that we get more slots */ + + os_aio_simulated_wake_handler_threads(); + } + + os_event_wait(array->not_full); + + goto loop; + } + + for (i = prim_segment * n; i < array->n_slots; i++) { + slot = os_aio_array_get_nth_slot(array, i); + + if (slot->reserved == FALSE) { + break; + } + } + + if (slot->reserved == TRUE){ + /* Not found after the intended segment. So we should search before. */ + for (i = 0;; i++) { + slot = os_aio_array_get_nth_slot(array, i); + + if (slot->reserved == FALSE) { + break; + } + } + } + + array->n_reserved++; + + if (array->n_reserved == 1) { + os_event_reset(array->is_empty); + } + + if (array->n_reserved == array->n_slots) { + os_event_reset(array->not_full); + } + + slot->reserved = TRUE; + slot->reservation_time = time(NULL); + slot->message1 = message1; + slot->message2 = message2; + slot->file = file; + slot->name = name; + slot->len = len; + slot->type = type; + slot->buf = buf; + slot->offset = offset; + slot->offset_high = offset_high; + slot->io_already_done = FALSE; + +#ifdef WIN_ASYNC_IO + control = &(slot->control); + control->Offset = (DWORD)offset; + control->OffsetHigh = (DWORD)offset_high; + os_event_reset(slot->event); +#endif + + os_mutex_exit(array->mutex); + + return(slot); +} + +/*********************************************************************** +Frees a slot in the aio array. */ +static +void +os_aio_array_free_slot( +/*===================*/ + os_aio_array_t* array, /* in: aio array */ + os_aio_slot_t* slot) /* in: pointer to slot */ +{ + ut_ad(array); + ut_ad(slot); + + os_mutex_enter(array->mutex); + + ut_ad(slot->reserved); + + slot->reserved = FALSE; + + array->n_reserved--; + + if (array->n_reserved == array->n_slots - 1) { + os_event_set(array->not_full); + } + + if (array->n_reserved == 0) { + os_event_set(array->is_empty); + } + +#ifdef WIN_ASYNC_IO + os_event_reset(slot->event); +#endif + os_mutex_exit(array->mutex); +} + +/************************************************************************** +Wakes up a simulated aio i/o-handler thread if it has something to do. */ +static +void +os_aio_simulated_wake_handler_thread( +/*=================================*/ + ulint global_segment) /* in: the number of the segment in the aio + arrays */ +{ + os_aio_array_t* array; + os_aio_slot_t* slot; + ulint segment; + ulint n; + ulint i; + + ut_ad(!os_aio_use_native_aio); + + segment = os_aio_get_array_and_local_segment(&array, global_segment); + + n = array->n_slots / array->n_segments; + + /* Look through n slots after the segment * n'th slot */ + + os_mutex_enter(array->mutex); + + for (i = 0; i < n; i++) { + slot = os_aio_array_get_nth_slot(array, i + segment * n); + + if (slot->reserved) { + /* Found an i/o request */ + + break; + } + } + + os_mutex_exit(array->mutex); + + if (i < n) { + os_event_set(os_aio_segment_wait_events[global_segment]); + } +} + +/************************************************************************** +Wakes up simulated aio i/o-handler threads if they have something to do. */ +UNIV_INTERN +void +os_aio_simulated_wake_handler_threads(void) +/*=======================================*/ +{ + ulint i; + + if (os_aio_use_native_aio) { + /* We do not use simulated aio: do nothing */ + + return; + } + + os_aio_recommend_sleep_for_read_threads = FALSE; + + for (i = 0; i < os_aio_n_segments; i++) { + os_aio_simulated_wake_handler_thread(i); + } +} + +/************************************************************************** +This function can be called if one wants to post a batch of reads and +prefers an i/o-handler thread to handle them all at once later. You must +call os_aio_simulated_wake_handler_threads later to ensure the threads +are not left sleeping! */ +UNIV_INTERN +void +os_aio_simulated_put_read_threads_to_sleep(void) +/*============================================*/ +{ + os_aio_array_t* array; + ulint g; + + os_aio_recommend_sleep_for_read_threads = TRUE; + + for (g = 0; g < os_aio_n_segments; g++) { + os_aio_get_array_and_local_segment(&array, g); + + if (array == os_aio_read_array) { + + os_event_reset(os_aio_segment_wait_events[g]); + } + } +} + +/*********************************************************************** +Requests an asynchronous i/o operation. */ +UNIV_INTERN +ibool +os_aio( +/*===*/ + /* out: TRUE if request was queued + successfully, FALSE if fail */ + ulint type, /* in: OS_FILE_READ or OS_FILE_WRITE */ + ulint mode, /* in: OS_AIO_NORMAL, ..., possibly ORed + to OS_AIO_SIMULATED_WAKE_LATER: the + last flag advises this function not to wake + i/o-handler threads, but the caller will + do the waking explicitly later, in this + way the caller can post several requests in + a batch; NOTE that the batch must not be + so big that it exhausts the slots in aio + arrays! NOTE that a simulated batch + may introduce hidden chances of deadlocks, + because i/os are not actually handled until + all have been posted: use with great + caution! */ + const char* name, /* in: name of the file or path as a + null-terminated string */ + os_file_t file, /* in: handle to a file */ + void* buf, /* in: buffer where to read or from which + to write */ + ulint offset, /* in: least significant 32 bits of file + offset where to read or write */ + ulint offset_high, /* in: most significant 32 bits of + offset */ + ulint n, /* in: number of bytes to read or write */ + fil_node_t* message1,/* in: messages for the aio handler (these + can be used to identify a completed aio + operation); if mode is OS_AIO_SYNC, these + are ignored */ + void* message2) +{ + os_aio_array_t* array; + os_aio_slot_t* slot; +#ifdef WIN_ASYNC_IO + ibool retval; + BOOL ret = TRUE; + DWORD len = (DWORD) n; + struct fil_node_struct * dummy_mess1; + void* dummy_mess2; + ulint dummy_type; +#endif + ulint err = 0; + ibool retry; + ulint wake_later; + + ut_ad(file); + ut_ad(buf); + ut_ad(n > 0); + ut_ad(n % OS_FILE_LOG_BLOCK_SIZE == 0); + ut_ad(offset % OS_FILE_LOG_BLOCK_SIZE == 0); + ut_ad(os_aio_validate()); + + wake_later = mode & OS_AIO_SIMULATED_WAKE_LATER; + mode = mode & (~OS_AIO_SIMULATED_WAKE_LATER); + + if (mode == OS_AIO_SYNC +#ifdef WIN_ASYNC_IO + && !os_aio_use_native_aio +#endif + ) { + /* This is actually an ordinary synchronous read or write: + no need to use an i/o-handler thread. NOTE that if we use + Windows async i/o, Windows does not allow us to use + ordinary synchronous os_file_read etc. on the same file, + therefore we have built a special mechanism for synchronous + wait in the Windows case. */ + + if (type == OS_FILE_READ) { + return(os_file_read(file, buf, offset, + offset_high, n)); + } + + ut_a(type == OS_FILE_WRITE); + + return(os_file_write(name, file, buf, offset, offset_high, n)); + } + +try_again: + if (mode == OS_AIO_NORMAL) { + if (type == OS_FILE_READ) { + array = os_aio_read_array; + } else { + array = os_aio_write_array; + } + } else if (mode == OS_AIO_IBUF) { + ut_ad(type == OS_FILE_READ); + /* Reduce probability of deadlock bugs in connection with ibuf: + do not let the ibuf i/o handler sleep */ + + wake_later = FALSE; + + array = os_aio_ibuf_array; + } else if (mode == OS_AIO_LOG) { + + array = os_aio_log_array; + } else if (mode == OS_AIO_SYNC) { + array = os_aio_sync_array; + } else { + array = NULL; /* Eliminate compiler warning */ + ut_error; + } + + slot = os_aio_array_reserve_slot(type, array, message1, message2, file, + name, buf, offset, offset_high, n); + if (type == OS_FILE_READ) { + if (os_aio_use_native_aio) { +#ifdef WIN_ASYNC_IO + os_n_file_reads++; + os_bytes_read_since_printout += len; + + ret = ReadFile(file, buf, (DWORD)n, &len, + &(slot->control)); +#endif + } else { + if (!wake_later) { + os_aio_simulated_wake_handler_thread( + os_aio_get_segment_no_from_slot( + array, slot)); + } + } + } else if (type == OS_FILE_WRITE) { + if (os_aio_use_native_aio) { +#ifdef WIN_ASYNC_IO + os_n_file_writes++; + ret = WriteFile(file, buf, (DWORD)n, &len, + &(slot->control)); +#endif + } else { + if (!wake_later) { + os_aio_simulated_wake_handler_thread( + os_aio_get_segment_no_from_slot( + array, slot)); + } + } + } else { + ut_error; + } + +#ifdef WIN_ASYNC_IO + if (os_aio_use_native_aio) { + if ((ret && len == n) + || (!ret && GetLastError() == ERROR_IO_PENDING)) { + /* aio was queued successfully! */ + + if (mode == OS_AIO_SYNC) { + /* We want a synchronous i/o operation on a + file where we also use async i/o: in Windows + we must use the same wait mechanism as for + async i/o */ + + retval = os_aio_windows_handle(ULINT_UNDEFINED, + slot->pos, + &dummy_mess1, + &dummy_mess2, + &dummy_type); + + return(retval); + } + + return(TRUE); + } + + err = 1; /* Fall through the next if */ + } +#endif + if (err == 0) { + /* aio was queued successfully! */ + + return(TRUE); + } + + os_aio_array_free_slot(array, slot); + + retry = os_file_handle_error(name, + type == OS_FILE_READ + ? "aio read" : "aio write"); + if (retry) { + + goto try_again; + } + + return(FALSE); +} + +#ifdef WIN_ASYNC_IO +/************************************************************************** +This function is only used in Windows asynchronous i/o. +Waits for an aio operation to complete. This function is used to wait the +for completed requests. The aio array of pending requests is divided +into segments. The thread specifies which segment or slot it wants to wait +for. NOTE: this function will also take care of freeing the aio slot, +therefore no other thread is allowed to do the freeing! */ +UNIV_INTERN +ibool +os_aio_windows_handle( +/*==================*/ + /* out: TRUE if the aio operation succeeded */ + ulint segment, /* in: the number of the segment in the aio + arrays to wait for; segment 0 is the ibuf + i/o thread, segment 1 the log i/o thread, + then follow the non-ibuf read threads, and as + the last are the non-ibuf write threads; if + this is ULINT_UNDEFINED, then it means that + sync aio is used, and this parameter is + ignored */ + ulint pos, /* this parameter is used only in sync aio: + wait for the aio slot at this position */ + fil_node_t**message1, /* out: the messages passed with the aio + request; note that also in the case where + the aio operation failed, these output + parameters are valid and can be used to + restart the operation, for example */ + void** message2, + ulint* type) /* out: OS_FILE_WRITE or ..._READ */ +{ + ulint orig_seg = segment; + os_aio_array_t* array; + os_aio_slot_t* slot; + ulint n; + ulint i; + ibool ret_val; + BOOL ret; + DWORD len; + + if (segment == ULINT_UNDEFINED) { + array = os_aio_sync_array; + segment = 0; + } else { + segment = os_aio_get_array_and_local_segment(&array, segment); + } + + /* NOTE! We only access constant fields in os_aio_array. Therefore + we do not have to acquire the protecting mutex yet */ + + ut_ad(os_aio_validate()); + ut_ad(segment < array->n_segments); + + n = array->n_slots / array->n_segments; + + if (array == os_aio_sync_array) { + os_event_wait(os_aio_array_get_nth_slot(array, pos)->event); + i = pos; + } else { + srv_set_io_thread_op_info(orig_seg, "wait Windows aio"); + i = os_event_wait_multiple(n, + (array->native_events) + + segment * n); + } + + os_mutex_enter(array->mutex); + + slot = os_aio_array_get_nth_slot(array, i + segment * n); + + ut_a(slot->reserved); + + if (orig_seg != ULINT_UNDEFINED) { + srv_set_io_thread_op_info(orig_seg, + "get windows aio return value"); + } + + ret = GetOverlappedResult(slot->file, &(slot->control), &len, TRUE); + + *message1 = slot->message1; + *message2 = slot->message2; + + *type = slot->type; + + if (ret && len == slot->len) { + ret_val = TRUE; + +#ifdef UNIV_DO_FLUSH + if (slot->type == OS_FILE_WRITE + && !os_do_not_call_flush_at_each_write) { + ut_a(TRUE == os_file_flush(slot->file)); + } +#endif /* UNIV_DO_FLUSH */ + } else { + os_file_handle_error(slot->name, "Windows aio"); + + ret_val = FALSE; + } + + os_mutex_exit(array->mutex); + + os_aio_array_free_slot(array, slot); + + return(ret_val); +} +#endif + +/************************************************************************** +Does simulated aio. This function should be called by an i/o-handler +thread. */ +UNIV_INTERN +ibool +os_aio_simulated_handle( +/*====================*/ + /* out: TRUE if the aio operation succeeded */ + ulint global_segment, /* in: the number of the segment in the aio + arrays to wait for; segment 0 is the ibuf + i/o thread, segment 1 the log i/o thread, + then follow the non-ibuf read threads, and as + the last are the non-ibuf write threads */ + fil_node_t**message1, /* out: the messages passed with the aio + request; note that also in the case where + the aio operation failed, these output + parameters are valid and can be used to + restart the operation, for example */ + void** message2, + ulint* type) /* out: OS_FILE_WRITE or ..._READ */ +{ + os_aio_array_t* array; + ulint segment; + os_aio_slot_t* slot; + os_aio_slot_t* slot2; + os_aio_slot_t* consecutive_ios[OS_AIO_MERGE_N_CONSECUTIVE]; + ulint n_consecutive; + ulint total_len; + ulint offs; + ulint lowest_offset; + ulint biggest_age; + ulint age; + byte* combined_buf; + byte* combined_buf2; + ibool ret; + ulint n; + ulint i; + + segment = os_aio_get_array_and_local_segment(&array, global_segment); + +restart: + /* NOTE! We only access constant fields in os_aio_array. Therefore + we do not have to acquire the protecting mutex yet */ + + srv_set_io_thread_op_info(global_segment, + "looking for i/o requests (a)"); + ut_ad(os_aio_validate()); + ut_ad(segment < array->n_segments); + + n = array->n_slots / array->n_segments; + + /* Look through n slots after the segment * n'th slot */ + + if (array == os_aio_read_array + && os_aio_recommend_sleep_for_read_threads) { + + /* Give other threads chance to add several i/os to the array + at once. */ + + goto recommended_sleep; + } + + os_mutex_enter(array->mutex); + + srv_set_io_thread_op_info(global_segment, + "looking for i/o requests (b)"); + + /* Check if there is a slot for which the i/o has already been + done */ + + for (i = 0; i < n; i++) { + slot = os_aio_array_get_nth_slot(array, i + segment * n); + + if (slot->reserved && slot->io_already_done) { + + if (os_aio_print_debug) { + fprintf(stderr, + "InnoDB: i/o for slot %lu" + " already done, returning\n", + (ulong) i); + } + + ret = TRUE; + + goto slot_io_done; + } + } + + n_consecutive = 0; + + /* If there are at least 2 seconds old requests, then pick the oldest + one to prevent starvation. If several requests have the same age, + then pick the one at the lowest offset. */ + + biggest_age = 0; + lowest_offset = ULINT_MAX; + + for (i = 0; i < n; i++) { + slot = os_aio_array_get_nth_slot(array, i + segment * n); + + if (slot->reserved) { + age = (ulint)difftime(time(NULL), + slot->reservation_time); + + if ((age >= 2 && age > biggest_age) + || (age >= 2 && age == biggest_age + && slot->offset < lowest_offset)) { + + /* Found an i/o request */ + consecutive_ios[0] = slot; + + n_consecutive = 1; + + biggest_age = age; + lowest_offset = slot->offset; + } + } + } + + if (n_consecutive == 0) { + /* There were no old requests. Look for an i/o request at the + lowest offset in the array (we ignore the high 32 bits of the + offset in these heuristics) */ + + lowest_offset = ULINT_MAX; + + for (i = 0; i < n; i++) { + slot = os_aio_array_get_nth_slot(array, + i + segment * n); + + if (slot->reserved && slot->offset < lowest_offset) { + + /* Found an i/o request */ + consecutive_ios[0] = slot; + + n_consecutive = 1; + + lowest_offset = slot->offset; + } + } + } + + if (n_consecutive == 0) { + + /* No i/o requested at the moment */ + + goto wait_for_io; + } + + slot = consecutive_ios[0]; + + /* Check if there are several consecutive blocks to read or write */ + +consecutive_loop: + for (i = 0; i < n; i++) { + slot2 = os_aio_array_get_nth_slot(array, i + segment * n); + + if (slot2->reserved && slot2 != slot + && slot2->offset == slot->offset + slot->len + /* check that sum does not wrap over */ + && slot->offset + slot->len > slot->offset + && slot2->offset_high == slot->offset_high + && slot2->type == slot->type + && slot2->file == slot->file) { + + /* Found a consecutive i/o request */ + + consecutive_ios[n_consecutive] = slot2; + n_consecutive++; + + slot = slot2; + + if (n_consecutive < OS_AIO_MERGE_N_CONSECUTIVE) { + + goto consecutive_loop; + } else { + break; + } + } + } + + srv_set_io_thread_op_info(global_segment, "consecutive i/o requests"); + + /* We have now collected n_consecutive i/o requests in the array; + allocate a single buffer which can hold all data, and perform the + i/o */ + + total_len = 0; + slot = consecutive_ios[0]; + + for (i = 0; i < n_consecutive; i++) { + total_len += consecutive_ios[i]->len; + } + + if (n_consecutive == 1) { + /* We can use the buffer of the i/o request */ + combined_buf = slot->buf; + combined_buf2 = NULL; + } else { + combined_buf2 = ut_malloc(total_len + UNIV_PAGE_SIZE); + + ut_a(combined_buf2); + + combined_buf = ut_align(combined_buf2, UNIV_PAGE_SIZE); + } + + /* We release the array mutex for the time of the i/o: NOTE that + this assumes that there is just one i/o-handler thread serving + a single segment of slots! */ + + os_mutex_exit(array->mutex); + + if (slot->type == OS_FILE_WRITE && n_consecutive > 1) { + /* Copy the buffers to the combined buffer */ + offs = 0; + + for (i = 0; i < n_consecutive; i++) { + + ut_memcpy(combined_buf + offs, consecutive_ios[i]->buf, + consecutive_ios[i]->len); + offs += consecutive_ios[i]->len; + } + } + + srv_set_io_thread_op_info(global_segment, "doing file i/o"); + + if (os_aio_print_debug) { + fprintf(stderr, + "InnoDB: doing i/o of type %lu at offset %lu %lu," + " length %lu\n", + (ulong) slot->type, (ulong) slot->offset_high, + (ulong) slot->offset, (ulong) total_len); + } + + /* Do the i/o with ordinary, synchronous i/o functions: */ + if (slot->type == OS_FILE_WRITE) { + ret = os_file_write(slot->name, slot->file, combined_buf, + slot->offset, slot->offset_high, + total_len); + } else { + ret = os_file_read(slot->file, combined_buf, + slot->offset, slot->offset_high, total_len); + } + + ut_a(ret); + srv_set_io_thread_op_info(global_segment, "file i/o done"); + +#if 0 + fprintf(stderr, + "aio: %lu consecutive %lu:th segment, first offs %lu blocks\n", + n_consecutive, global_segment, slot->offset / UNIV_PAGE_SIZE); +#endif + + if (slot->type == OS_FILE_READ && n_consecutive > 1) { + /* Copy the combined buffer to individual buffers */ + offs = 0; + + for (i = 0; i < n_consecutive; i++) { + + ut_memcpy(consecutive_ios[i]->buf, combined_buf + offs, + consecutive_ios[i]->len); + offs += consecutive_ios[i]->len; + } + } + + if (combined_buf2) { + ut_free(combined_buf2); + } + + os_mutex_enter(array->mutex); + + /* Mark the i/os done in slots */ + + for (i = 0; i < n_consecutive; i++) { + consecutive_ios[i]->io_already_done = TRUE; + } + + /* We return the messages for the first slot now, and if there were + several slots, the messages will be returned with subsequent calls + of this function */ + +slot_io_done: + + ut_a(slot->reserved); + + *message1 = slot->message1; + *message2 = slot->message2; + + *type = slot->type; + + os_mutex_exit(array->mutex); + + os_aio_array_free_slot(array, slot); + + return(ret); + +wait_for_io: + srv_set_io_thread_op_info(global_segment, "resetting wait event"); + + /* We wait here until there again can be i/os in the segment + of this thread */ + + os_event_reset(os_aio_segment_wait_events[global_segment]); + + os_mutex_exit(array->mutex); + +recommended_sleep: + srv_set_io_thread_op_info(global_segment, "waiting for i/o request"); + + os_event_wait(os_aio_segment_wait_events[global_segment]); + + if (os_aio_print_debug) { + fprintf(stderr, + "InnoDB: i/o handler thread for i/o" + " segment %lu wakes up\n", + (ulong) global_segment); + } + + goto restart; +} + +/************************************************************************** +Validates the consistency of an aio array. */ +static +ibool +os_aio_array_validate( +/*==================*/ + /* out: TRUE if ok */ + os_aio_array_t* array) /* in: aio wait array */ +{ + os_aio_slot_t* slot; + ulint n_reserved = 0; + ulint i; + + ut_a(array); + + os_mutex_enter(array->mutex); + + ut_a(array->n_slots > 0); + ut_a(array->n_segments > 0); + + for (i = 0; i < array->n_slots; i++) { + slot = os_aio_array_get_nth_slot(array, i); + + if (slot->reserved) { + n_reserved++; + ut_a(slot->len > 0); + } + } + + ut_a(array->n_reserved == n_reserved); + + os_mutex_exit(array->mutex); + + return(TRUE); +} + +/************************************************************************** +Validates the consistency the aio system. */ +UNIV_INTERN +ibool +os_aio_validate(void) +/*=================*/ + /* out: TRUE if ok */ +{ + os_aio_array_validate(os_aio_read_array); + os_aio_array_validate(os_aio_write_array); + os_aio_array_validate(os_aio_ibuf_array); + os_aio_array_validate(os_aio_log_array); + os_aio_array_validate(os_aio_sync_array); + + return(TRUE); +} + +/************************************************************************** +Prints info of the aio arrays. */ +UNIV_INTERN +void +os_aio_print( +/*=========*/ + FILE* file) /* in: file where to print */ +{ + os_aio_array_t* array; + os_aio_slot_t* slot; + ulint n_reserved; + time_t current_time; + double time_elapsed; + double avg_bytes_read; + ulint i; + + for (i = 0; i < srv_n_file_io_threads; i++) { + fprintf(file, "I/O thread %lu state: %s (%s)", (ulong) i, + srv_io_thread_op_info[i], + srv_io_thread_function[i]); + +#ifndef __WIN__ + if (os_aio_segment_wait_events[i]->is_set) { + fprintf(file, " ev set"); + } +#endif + + fprintf(file, "\n"); + } + + fputs("Pending normal aio reads:", file); + + array = os_aio_read_array; +loop: + ut_a(array); + + os_mutex_enter(array->mutex); + + ut_a(array->n_slots > 0); + ut_a(array->n_segments > 0); + + n_reserved = 0; + + for (i = 0; i < array->n_slots; i++) { + slot = os_aio_array_get_nth_slot(array, i); + + if (slot->reserved) { + n_reserved++; +#if 0 + fprintf(stderr, "Reserved slot, messages %p %p\n", + (void*) slot->message1, + (void*) slot->message2); +#endif + ut_a(slot->len > 0); + } + } + + ut_a(array->n_reserved == n_reserved); + + fprintf(file, " %lu", (ulong) n_reserved); + + os_mutex_exit(array->mutex); + + if (array == os_aio_read_array) { + fputs(", aio writes:", file); + + array = os_aio_write_array; + + goto loop; + } + + if (array == os_aio_write_array) { + fputs(",\n ibuf aio reads:", file); + array = os_aio_ibuf_array; + + goto loop; + } + + if (array == os_aio_ibuf_array) { + fputs(", log i/o's:", file); + array = os_aio_log_array; + + goto loop; + } + + if (array == os_aio_log_array) { + fputs(", sync i/o's:", file); + array = os_aio_sync_array; + + goto loop; + } + + putc('\n', file); + current_time = time(NULL); + time_elapsed = 0.001 + difftime(current_time, os_last_printout); + + fprintf(file, + "Pending flushes (fsync) log: %lu; buffer pool: %lu\n" + "%lu OS file reads, %lu OS file writes, %lu OS fsyncs\n", + (ulong) fil_n_pending_log_flushes, + (ulong) fil_n_pending_tablespace_flushes, + (ulong) os_n_file_reads, (ulong) os_n_file_writes, + (ulong) os_n_fsyncs); + + if (os_file_n_pending_preads != 0 || os_file_n_pending_pwrites != 0) { + fprintf(file, + "%lu pending preads, %lu pending pwrites\n", + (ulong) os_file_n_pending_preads, + (ulong) os_file_n_pending_pwrites); + } + + if (os_n_file_reads == os_n_file_reads_old) { + avg_bytes_read = 0.0; + } else { + avg_bytes_read = (double) os_bytes_read_since_printout + / (os_n_file_reads - os_n_file_reads_old); + } + + fprintf(file, + "%.2f reads/s, %lu avg bytes/read," + " %.2f writes/s, %.2f fsyncs/s\n", + (os_n_file_reads - os_n_file_reads_old) + / time_elapsed, + (ulong)avg_bytes_read, + (os_n_file_writes - os_n_file_writes_old) + / time_elapsed, + (os_n_fsyncs - os_n_fsyncs_old) + / time_elapsed); + + os_n_file_reads_old = os_n_file_reads; + os_n_file_writes_old = os_n_file_writes; + os_n_fsyncs_old = os_n_fsyncs; + os_bytes_read_since_printout = 0; + + os_last_printout = current_time; +} + +/************************************************************************** +Refreshes the statistics used to print per-second averages. */ +UNIV_INTERN +void +os_aio_refresh_stats(void) +/*======================*/ +{ + os_n_file_reads_old = os_n_file_reads; + os_n_file_writes_old = os_n_file_writes; + os_n_fsyncs_old = os_n_fsyncs; + os_bytes_read_since_printout = 0; + + os_last_printout = time(NULL); +} + +#ifdef UNIV_DEBUG +/************************************************************************** +Checks that all slots in the system have been freed, that is, there are +no pending io operations. */ +UNIV_INTERN +ibool +os_aio_all_slots_free(void) +/*=======================*/ + /* out: TRUE if all free */ +{ + os_aio_array_t* array; + ulint n_res = 0; + + array = os_aio_read_array; + + os_mutex_enter(array->mutex); + + n_res += array->n_reserved; + + os_mutex_exit(array->mutex); + + array = os_aio_write_array; + + os_mutex_enter(array->mutex); + + n_res += array->n_reserved; + + os_mutex_exit(array->mutex); + + array = os_aio_ibuf_array; + + os_mutex_enter(array->mutex); + + n_res += array->n_reserved; + + os_mutex_exit(array->mutex); + + array = os_aio_log_array; + + os_mutex_enter(array->mutex); + + n_res += array->n_reserved; + + os_mutex_exit(array->mutex); + + array = os_aio_sync_array; + + os_mutex_enter(array->mutex); + + n_res += array->n_reserved; + + os_mutex_exit(array->mutex); + + if (n_res == 0) { + + return(TRUE); + } + + return(FALSE); +} +#endif /* UNIV_DEBUG */ === added file 'storage/xtradb/os/os0proc.c' --- a/storage/xtradb/os/os0proc.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/os/os0proc.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,262 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +The interface to the operating system +process control primitives + +Created 9/30/1995 Heikki Tuuri +*******************************************************/ + +#include "os0proc.h" +#ifdef UNIV_NONINL +#include "os0proc.ic" +#endif + +#include "ut0mem.h" +#include "ut0byte.h" + +/* FreeBSD for example has only MAP_ANON, Linux has MAP_ANONYMOUS and +MAP_ANON but MAP_ANON is marked as deprecated */ +#if defined(MAP_ANONYMOUS) +#define OS_MAP_ANON MAP_ANONYMOUS +#elif defined(MAP_ANON) +#define OS_MAP_ANON MAP_ANON +#endif + +UNIV_INTERN ibool os_use_large_pages; +/* Large page size. This may be a boot-time option on some platforms */ +UNIV_INTERN ulint os_large_page_size; + +/******************************************************************** +Converts the current process id to a number. It is not guaranteed that the +number is unique. In Linux returns the 'process number' of the current +thread. That number is the same as one sees in 'top', for example. In Linux +the thread id is not the same as one sees in 'top'. */ +UNIV_INTERN +ulint +os_proc_get_number(void) +/*====================*/ +{ +#ifdef __WIN__ + return((ulint)GetCurrentProcessId()); +#else + return((ulint)getpid()); +#endif +} + +/******************************************************************** +Allocates large pages memory. */ +UNIV_INTERN +void* +os_mem_alloc_large( +/*===============*/ + /* out: allocated memory */ + ulint* n) /* in/out: number of bytes */ +{ + void* ptr; + ulint size; +#if defined HAVE_LARGE_PAGES && defined UNIV_LINUX + int shmid; + struct shmid_ds buf; + + if (!os_use_large_pages || !os_large_page_size) { + goto skip; + } + + /* Align block size to os_large_page_size */ + ut_ad(ut_is_2pow(os_large_page_size)); + size = ut_2pow_round(*n + (os_large_page_size - 1), + os_large_page_size); + + shmid = shmget(IPC_PRIVATE, (size_t)size, SHM_HUGETLB | SHM_R | SHM_W); + if (shmid < 0) { + fprintf(stderr, "InnoDB: HugeTLB: Warning: Failed to allocate" + " %lu bytes. errno %d\n", size, errno); + ptr = NULL; + } else { + ptr = shmat(shmid, NULL, 0); + if (ptr == (void *)-1) { + fprintf(stderr, "InnoDB: HugeTLB: Warning: Failed to" + " attach shared memory segment, errno %d\n", + errno); + } + + /* Remove the shared memory segment so that it will be + automatically freed after memory is detached or + process exits */ + shmctl(shmid, IPC_RMID, &buf); + } + + if (ptr) { + *n = size; + os_fast_mutex_lock(&ut_list_mutex); + ut_total_allocated_memory += size; + os_fast_mutex_unlock(&ut_list_mutex); +# ifdef UNIV_SET_MEM_TO_ZERO + memset(ptr, '\0', size); +# endif + UNIV_MEM_ALLOC(ptr, size); + return(ptr); + } + + fprintf(stderr, "InnoDB HugeTLB: Warning: Using conventional" + " memory pool\n"); +skip: +#endif /* HAVE_LARGE_PAGES && UNIV_LINUX */ + +#ifdef __WIN__ + SYSTEM_INFO system_info; + GetSystemInfo(&system_info); + + /* Align block size to system page size */ + ut_ad(ut_is_2pow(system_info.dwPageSize)); + /* system_info.dwPageSize is only 32-bit. Casting to ulint is required + on 64-bit Windows. */ + size = *n = ut_2pow_round(*n + (system_info.dwPageSize - 1), + (ulint) system_info.dwPageSize); + ptr = VirtualAlloc(NULL, size, MEM_COMMIT | MEM_RESERVE, + PAGE_READWRITE); + if (!ptr) { + fprintf(stderr, "InnoDB: VirtualAlloc(%lu bytes) failed;" + " Windows error %lu\n", + (ulong) size, (ulong) GetLastError()); + } else { + os_fast_mutex_lock(&ut_list_mutex); + ut_total_allocated_memory += size; + os_fast_mutex_unlock(&ut_list_mutex); + UNIV_MEM_ALLOC(ptr, size); + } +#elif defined __NETWARE__ || !defined OS_MAP_ANON + size = *n; + ptr = ut_malloc_low(size, TRUE, FALSE); +#else +# ifdef HAVE_GETPAGESIZE + size = getpagesize(); +# else + size = UNIV_PAGE_SIZE; +# endif + /* Align block size to system page size */ + ut_ad(ut_is_2pow(size)); + size = *n = ut_2pow_round(*n + (size - 1), size); + ptr = mmap(NULL, size, PROT_READ | PROT_WRITE, + MAP_PRIVATE | OS_MAP_ANON, -1, 0); + if (UNIV_UNLIKELY(ptr == (void*) -1)) { + fprintf(stderr, "InnoDB: mmap(%lu bytes) failed;" + " errno %lu\n", + (ulong) size, (ulong) errno); + ptr = NULL; + } else { + os_fast_mutex_lock(&ut_list_mutex); + ut_total_allocated_memory += size; + os_fast_mutex_unlock(&ut_list_mutex); + UNIV_MEM_ALLOC(ptr, size); + } +#endif + return(ptr); +} + +/******************************************************************** +Frees large pages memory. */ +UNIV_INTERN +void +os_mem_free_large( +/*==============*/ + void *ptr, /* in: pointer returned by + os_mem_alloc_large() */ + ulint size) /* in: size returned by + os_mem_alloc_large() */ +{ + os_fast_mutex_lock(&ut_list_mutex); + ut_a(ut_total_allocated_memory >= size); + os_fast_mutex_unlock(&ut_list_mutex); + +#if defined HAVE_LARGE_PAGES && defined UNIV_LINUX + if (os_use_large_pages && os_large_page_size && !shmdt(ptr)) { + os_fast_mutex_lock(&ut_list_mutex); + ut_a(ut_total_allocated_memory >= size); + ut_total_allocated_memory -= size; + os_fast_mutex_unlock(&ut_list_mutex); + UNIV_MEM_FREE(ptr, size); + return; + } +#endif /* HAVE_LARGE_PAGES && UNIV_LINUX */ +#ifdef __WIN__ + /* When RELEASE memory, the size parameter must be 0. + Do not use MEM_RELEASE with MEM_DECOMMIT. */ + if (!VirtualFree(ptr, 0, MEM_RELEASE)) { + fprintf(stderr, "InnoDB: VirtualFree(%p, %lu) failed;" + " Windows error %lu\n", + ptr, (ulong) size, (ulong) GetLastError()); + } else { + os_fast_mutex_lock(&ut_list_mutex); + ut_a(ut_total_allocated_memory >= size); + ut_total_allocated_memory -= size; + os_fast_mutex_unlock(&ut_list_mutex); + UNIV_MEM_FREE(ptr, size); + } +#elif defined __NETWARE__ || !defined OS_MAP_ANON + ut_free(ptr); +#else + if (munmap(ptr, size)) { + fprintf(stderr, "InnoDB: munmap(%p, %lu) failed;" + " errno %lu\n", + ptr, (ulong) size, (ulong) errno); + } else { + os_fast_mutex_lock(&ut_list_mutex); + ut_a(ut_total_allocated_memory >= size); + ut_total_allocated_memory -= size; + os_fast_mutex_unlock(&ut_list_mutex); + UNIV_MEM_FREE(ptr, size); + } +#endif +} + +/******************************************************************** +Sets the priority boost for threads released from waiting within the current +process. */ +UNIV_INTERN +void +os_process_set_priority_boost( +/*==========================*/ + ibool do_boost) /* in: TRUE if priority boost should be done, + FALSE if not */ +{ +#ifdef __WIN__ + ibool no_boost; + + if (do_boost) { + no_boost = FALSE; + } else { + no_boost = TRUE; + } + +#if TRUE != 1 +# error "TRUE != 1" +#endif + + /* Does not do anything currently! + SetProcessPriorityBoost(GetCurrentProcess(), no_boost); + */ + fputs("Warning: process priority boost setting" + " currently not functional!\n", + stderr); +#else + UT_NOT_USED(do_boost); +#endif +} === added file 'storage/xtradb/os/os0sync.c' --- a/storage/xtradb/os/os0sync.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/os/os0sync.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,769 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +The interface to the operating system +synchronization primitives. + +Created 9/6/1995 Heikki Tuuri +*******************************************************/ + +#include "os0sync.h" +#ifdef UNIV_NONINL +#include "os0sync.ic" +#endif + +#ifdef __WIN__ +#include <windows.h> +#endif + +#include "ut0mem.h" +#include "srv0start.h" + +/* Type definition for an operating system mutex struct */ +struct os_mutex_struct{ + os_event_t event; /* Used by sync0arr.c for queing threads */ + void* handle; /* OS handle to mutex */ + ulint count; /* we use this counter to check + that the same thread does not + recursively lock the mutex: we + do not assume that the OS mutex + supports recursive locking, though + NT seems to do that */ + UT_LIST_NODE_T(os_mutex_str_t) os_mutex_list; + /* list of all 'slow' OS mutexes created */ +}; + +/* Mutex protecting counts and the lists of OS mutexes and events */ +UNIV_INTERN os_mutex_t os_sync_mutex; +static ibool os_sync_mutex_inited = FALSE; +static ibool os_sync_free_called = FALSE; + +/* This is incremented by 1 in os_thread_create and decremented by 1 in +os_thread_exit */ +UNIV_INTERN ulint os_thread_count = 0; + +/* The list of all events created */ +static UT_LIST_BASE_NODE_T(os_event_struct_t) os_event_list; + +/* The list of all OS 'slow' mutexes */ +static UT_LIST_BASE_NODE_T(os_mutex_str_t) os_mutex_list; + +UNIV_INTERN ulint os_event_count = 0; +UNIV_INTERN ulint os_mutex_count = 0; +UNIV_INTERN ulint os_fast_mutex_count = 0; + +/* Because a mutex is embedded inside an event and there is an +event embedded inside a mutex, on free, this generates a recursive call. +This version of the free event function doesn't acquire the global lock */ +static void os_event_free_internal(os_event_t event); + +/************************************************************* +Initializes global event and OS 'slow' mutex lists. */ +UNIV_INTERN +void +os_sync_init(void) +/*==============*/ +{ + UT_LIST_INIT(os_event_list); + UT_LIST_INIT(os_mutex_list); + + os_sync_mutex = os_mutex_create(NULL); + + os_sync_mutex_inited = TRUE; +} + +/************************************************************* +Frees created events and OS 'slow' mutexes. */ +UNIV_INTERN +void +os_sync_free(void) +/*==============*/ +{ + os_event_t event; + os_mutex_t mutex; + + os_sync_free_called = TRUE; + event = UT_LIST_GET_FIRST(os_event_list); + + while (event) { + + os_event_free(event); + + event = UT_LIST_GET_FIRST(os_event_list); + } + + mutex = UT_LIST_GET_FIRST(os_mutex_list); + + while (mutex) { + if (mutex == os_sync_mutex) { + /* Set the flag to FALSE so that we do not try to + reserve os_sync_mutex any more in remaining freeing + operations in shutdown */ + os_sync_mutex_inited = FALSE; + } + + os_mutex_free(mutex); + + mutex = UT_LIST_GET_FIRST(os_mutex_list); + } + os_sync_free_called = FALSE; +} + +/************************************************************* +Creates an event semaphore, i.e., a semaphore which may just have two +states: signaled and nonsignaled. The created event is manual reset: it +must be reset explicitly by calling sync_os_reset_event. */ +UNIV_INTERN +os_event_t +os_event_create( +/*============*/ + /* out: the event handle */ + const char* name) /* in: the name of the event, if NULL + the event is created without a name */ +{ +#ifdef __WIN__ + os_event_t event; + + event = ut_malloc(sizeof(struct os_event_struct)); + + event->handle = CreateEvent(NULL, /* No security attributes */ + TRUE, /* Manual reset */ + FALSE, /* Initial state nonsignaled */ + (LPCTSTR) name); + if (!event->handle) { + fprintf(stderr, + "InnoDB: Could not create a Windows event semaphore;" + " Windows error %lu\n", + (ulong) GetLastError()); + } +#else /* Unix */ + os_event_t event; + + UT_NOT_USED(name); + + event = ut_malloc(sizeof(struct os_event_struct)); + + os_fast_mutex_init(&(event->os_mutex)); + +#if defined(UNIV_HOTBACKUP) && defined(UNIV_HPUX10) + ut_a(0 == pthread_cond_init(&(event->cond_var), + pthread_condattr_default)); +#else + ut_a(0 == pthread_cond_init(&(event->cond_var), NULL)); +#endif + event->is_set = FALSE; + + /* We return this value in os_event_reset(), which can then be + be used to pass to the os_event_wait_low(). The value of zero + is reserved in os_event_wait_low() for the case when the + caller does not want to pass any signal_count value. To + distinguish between the two cases we initialize signal_count + to 1 here. */ + event->signal_count = 1; +#endif /* __WIN__ */ + + /* The os_sync_mutex can be NULL because during startup an event + can be created [ because it's embedded in the mutex/rwlock ] before + this module has been initialized */ + if (os_sync_mutex != NULL) { + os_mutex_enter(os_sync_mutex); + } + + /* Put to the list of events */ + UT_LIST_ADD_FIRST(os_event_list, os_event_list, event); + + os_event_count++; + + if (os_sync_mutex != NULL) { + os_mutex_exit(os_sync_mutex); + } + + return(event); +} + +#ifdef __WIN__ +/************************************************************* +Creates an auto-reset event semaphore, i.e., an event which is automatically +reset when a single thread is released. Works only in Windows. */ +UNIV_INTERN +os_event_t +os_event_create_auto( +/*=================*/ + /* out: the event handle */ + const char* name) /* in: the name of the event, if NULL + the event is created without a name */ +{ + os_event_t event; + + event = ut_malloc(sizeof(struct os_event_struct)); + + event->handle = CreateEvent(NULL, /* No security attributes */ + FALSE, /* Auto-reset */ + FALSE, /* Initial state nonsignaled */ + (LPCTSTR) name); + + if (!event->handle) { + fprintf(stderr, + "InnoDB: Could not create a Windows auto" + " event semaphore; Windows error %lu\n", + (ulong) GetLastError()); + } + + /* Put to the list of events */ + os_mutex_enter(os_sync_mutex); + + UT_LIST_ADD_FIRST(os_event_list, os_event_list, event); + + os_event_count++; + + os_mutex_exit(os_sync_mutex); + + return(event); +} +#endif + +/************************************************************** +Sets an event semaphore to the signaled state: lets waiting threads +proceed. */ +UNIV_INTERN +void +os_event_set( +/*=========*/ + os_event_t event) /* in: event to set */ +{ +#ifdef __WIN__ + ut_a(event); + ut_a(SetEvent(event->handle)); +#else + ut_a(event); + + os_fast_mutex_lock(&(event->os_mutex)); + + if (event->is_set) { + /* Do nothing */ + } else { + event->is_set = TRUE; + event->signal_count += 1; + ut_a(0 == pthread_cond_broadcast(&(event->cond_var))); + } + + os_fast_mutex_unlock(&(event->os_mutex)); +#endif +} + +/************************************************************** +Resets an event semaphore to the nonsignaled state. Waiting threads will +stop to wait for the event. +The return value should be passed to os_even_wait_low() if it is desired +that this thread should not wait in case of an intervening call to +os_event_set() between this os_event_reset() and the +os_event_wait_low() call. See comments for os_event_wait_low(). */ +UNIV_INTERN +ib_int64_t +os_event_reset( +/*===========*/ + /* out: current signal_count. */ + os_event_t event) /* in: event to reset */ +{ + ib_int64_t ret = 0; + +#ifdef __WIN__ + ut_a(event); + + ut_a(ResetEvent(event->handle)); +#else + ut_a(event); + + os_fast_mutex_lock(&(event->os_mutex)); + + if (!event->is_set) { + /* Do nothing */ + } else { + event->is_set = FALSE; + } + ret = event->signal_count; + + os_fast_mutex_unlock(&(event->os_mutex)); +#endif + return(ret); +} + +/************************************************************** +Frees an event object, without acquiring the global lock. */ +static +void +os_event_free_internal( +/*===================*/ + os_event_t event) /* in: event to free */ +{ +#ifdef __WIN__ + ut_a(event); + + ut_a(CloseHandle(event->handle)); +#else + ut_a(event); + + /* This is to avoid freeing the mutex twice */ + os_fast_mutex_free(&(event->os_mutex)); + + ut_a(0 == pthread_cond_destroy(&(event->cond_var))); +#endif + /* Remove from the list of events */ + + UT_LIST_REMOVE(os_event_list, os_event_list, event); + + os_event_count--; + + ut_free(event); +} + +/************************************************************** +Frees an event object. */ +UNIV_INTERN +void +os_event_free( +/*==========*/ + os_event_t event) /* in: event to free */ + +{ +#ifdef __WIN__ + ut_a(event); + + ut_a(CloseHandle(event->handle)); +#else + ut_a(event); + + os_fast_mutex_free(&(event->os_mutex)); + ut_a(0 == pthread_cond_destroy(&(event->cond_var))); +#endif + /* Remove from the list of events */ + + os_mutex_enter(os_sync_mutex); + + UT_LIST_REMOVE(os_event_list, os_event_list, event); + + os_event_count--; + + os_mutex_exit(os_sync_mutex); + + ut_free(event); +} + +/************************************************************** +Waits for an event object until it is in the signaled state. If +srv_shutdown_state == SRV_SHUTDOWN_EXIT_THREADS this also exits the +waiting thread when the event becomes signaled (or immediately if the +event is already in the signaled state). + +Typically, if the event has been signalled after the os_event_reset() +we'll return immediately because event->is_set == TRUE. +There are, however, situations (e.g.: sync_array code) where we may +lose this information. For example: + +thread A calls os_event_reset() +thread B calls os_event_set() [event->is_set == TRUE] +thread C calls os_event_reset() [event->is_set == FALSE] +thread A calls os_event_wait() [infinite wait!] +thread C calls os_event_wait() [infinite wait!] + +Where such a scenario is possible, to avoid infinite wait, the +value returned by os_event_reset() should be passed in as +reset_sig_count. */ +UNIV_INTERN +void +os_event_wait_low( +/*==============*/ + os_event_t event, /* in: event to wait */ + ib_int64_t reset_sig_count)/* in: zero or the value + returned by previous call of + os_event_reset(). */ +{ +#ifdef __WIN__ + DWORD err; + + ut_a(event); + + UT_NOT_USED(reset_sig_count); + + /* Specify an infinite time limit for waiting */ + err = WaitForSingleObject(event->handle, INFINITE); + + ut_a(err == WAIT_OBJECT_0); + + if (srv_shutdown_state == SRV_SHUTDOWN_EXIT_THREADS) { + os_thread_exit(NULL); + } +#else + ib_int64_t old_signal_count; + + os_fast_mutex_lock(&(event->os_mutex)); + + if (reset_sig_count) { + old_signal_count = reset_sig_count; + } else { + old_signal_count = event->signal_count; + } + + for (;;) { + if (event->is_set == TRUE + || event->signal_count != old_signal_count) { + + os_fast_mutex_unlock(&(event->os_mutex)); + + if (srv_shutdown_state == SRV_SHUTDOWN_EXIT_THREADS) { + + os_thread_exit(NULL); + } + /* Ok, we may return */ + + return; + } + + pthread_cond_wait(&(event->cond_var), &(event->os_mutex)); + + /* Solaris manual said that spurious wakeups may occur: we + have to check if the event really has been signaled after + we came here to wait */ + } +#endif +} + +/************************************************************** +Waits for an event object until it is in the signaled state or +a timeout is exceeded. In Unix the timeout is always infinite. */ +UNIV_INTERN +ulint +os_event_wait_time( +/*===============*/ + /* out: 0 if success, OS_SYNC_TIME_EXCEEDED if + timeout was exceeded */ + os_event_t event, /* in: event to wait */ + ulint time) /* in: timeout in microseconds, or + OS_SYNC_INFINITE_TIME */ +{ +#ifdef __WIN__ + DWORD err; + + ut_a(event); + + if (time != OS_SYNC_INFINITE_TIME) { + err = WaitForSingleObject(event->handle, (DWORD) time / 1000); + } else { + err = WaitForSingleObject(event->handle, INFINITE); + } + + if (err == WAIT_OBJECT_0) { + + return(0); + } else if (err == WAIT_TIMEOUT) { + + return(OS_SYNC_TIME_EXCEEDED); + } else { + ut_error; + return(1000000); /* dummy value to eliminate compiler warn. */ + } +#else + UT_NOT_USED(time); + + /* In Posix this is just an ordinary, infinite wait */ + + os_event_wait(event); + + return(0); +#endif +} + +#ifdef __WIN__ +/************************************************************** +Waits for any event in an OS native event array. Returns if even a single +one is signaled or becomes signaled. */ +UNIV_INTERN +ulint +os_event_wait_multiple( +/*===================*/ + /* out: index of the event + which was signaled */ + ulint n, /* in: number of events in the + array */ + os_native_event_t* native_event_array) + /* in: pointer to an array of event + handles */ +{ + DWORD index; + + ut_a(native_event_array); + ut_a(n > 0); + + index = WaitForMultipleObjects((DWORD) n, native_event_array, + FALSE, /* Wait for any 1 event */ + INFINITE); /* Infinite wait time + limit */ + ut_a(index >= WAIT_OBJECT_0); /* NOTE: Pointless comparision */ + ut_a(index < WAIT_OBJECT_0 + n); + + if (srv_shutdown_state == SRV_SHUTDOWN_EXIT_THREADS) { + os_thread_exit(NULL); + } + + return(index - WAIT_OBJECT_0); +} +#endif + +/************************************************************* +Creates an operating system mutex semaphore. Because these are slow, the +mutex semaphore of InnoDB itself (mutex_t) should be used where possible. */ +UNIV_INTERN +os_mutex_t +os_mutex_create( +/*============*/ + /* out: the mutex handle */ + const char* name) /* in: the name of the mutex, if NULL + the mutex is created without a name */ +{ +#ifdef __WIN__ + HANDLE mutex; + os_mutex_t mutex_str; + + mutex = CreateMutex(NULL, /* No security attributes */ + FALSE, /* Initial state: no owner */ + (LPCTSTR) name); + ut_a(mutex); +#else + os_fast_mutex_t* mutex; + os_mutex_t mutex_str; + + UT_NOT_USED(name); + + mutex = ut_malloc(sizeof(os_fast_mutex_t)); + + os_fast_mutex_init(mutex); +#endif + mutex_str = ut_malloc(sizeof(os_mutex_str_t)); + + mutex_str->handle = mutex; + mutex_str->count = 0; + mutex_str->event = os_event_create(NULL); + + if (UNIV_LIKELY(os_sync_mutex_inited)) { + /* When creating os_sync_mutex itself we cannot reserve it */ + os_mutex_enter(os_sync_mutex); + } + + UT_LIST_ADD_FIRST(os_mutex_list, os_mutex_list, mutex_str); + + os_mutex_count++; + + if (UNIV_LIKELY(os_sync_mutex_inited)) { + os_mutex_exit(os_sync_mutex); + } + + return(mutex_str); +} + +/************************************************************** +Acquires ownership of a mutex semaphore. */ +UNIV_INTERN +void +os_mutex_enter( +/*===========*/ + os_mutex_t mutex) /* in: mutex to acquire */ +{ +#ifdef __WIN__ + DWORD err; + + ut_a(mutex); + + /* Specify infinite time limit for waiting */ + err = WaitForSingleObject(mutex->handle, INFINITE); + + ut_a(err == WAIT_OBJECT_0); + + (mutex->count)++; + ut_a(mutex->count == 1); +#else + os_fast_mutex_lock(mutex->handle); + + (mutex->count)++; + + ut_a(mutex->count == 1); +#endif +} + +/************************************************************** +Releases ownership of a mutex. */ +UNIV_INTERN +void +os_mutex_exit( +/*==========*/ + os_mutex_t mutex) /* in: mutex to release */ +{ + ut_a(mutex); + + ut_a(mutex->count == 1); + + (mutex->count)--; +#ifdef __WIN__ + ut_a(ReleaseMutex(mutex->handle)); +#else + os_fast_mutex_unlock(mutex->handle); +#endif +} + +/************************************************************** +Frees a mutex object. */ +UNIV_INTERN +void +os_mutex_free( +/*==========*/ + os_mutex_t mutex) /* in: mutex to free */ +{ + ut_a(mutex); + + if (UNIV_LIKELY(!os_sync_free_called)) { + os_event_free_internal(mutex->event); + } + + if (UNIV_LIKELY(os_sync_mutex_inited)) { + os_mutex_enter(os_sync_mutex); + } + + UT_LIST_REMOVE(os_mutex_list, os_mutex_list, mutex); + + os_mutex_count--; + + if (UNIV_LIKELY(os_sync_mutex_inited)) { + os_mutex_exit(os_sync_mutex); + } + +#ifdef __WIN__ + ut_a(CloseHandle(mutex->handle)); + + ut_free(mutex); +#else + os_fast_mutex_free(mutex->handle); + ut_free(mutex->handle); + ut_free(mutex); +#endif +} + +/************************************************************* +Initializes an operating system fast mutex semaphore. */ +UNIV_INTERN +void +os_fast_mutex_init( +/*===============*/ + os_fast_mutex_t* fast_mutex) /* in: fast mutex */ +{ +#ifdef __WIN__ + ut_a(fast_mutex); + + InitializeCriticalSection((LPCRITICAL_SECTION) fast_mutex); +#else +#if defined(UNIV_HOTBACKUP) && defined(UNIV_HPUX10) + ut_a(0 == pthread_mutex_init(fast_mutex, pthread_mutexattr_default)); +#else + ut_a(0 == pthread_mutex_init(fast_mutex, MY_MUTEX_INIT_FAST)); +#endif +#endif + if (UNIV_LIKELY(os_sync_mutex_inited)) { + /* When creating os_sync_mutex itself (in Unix) we cannot + reserve it */ + + os_mutex_enter(os_sync_mutex); + } + + os_fast_mutex_count++; + + if (UNIV_LIKELY(os_sync_mutex_inited)) { + os_mutex_exit(os_sync_mutex); + } +} + +/************************************************************** +Acquires ownership of a fast mutex. */ +UNIV_INTERN +void +os_fast_mutex_lock( +/*===============*/ + os_fast_mutex_t* fast_mutex) /* in: mutex to acquire */ +{ +#ifdef __WIN__ + EnterCriticalSection((LPCRITICAL_SECTION) fast_mutex); +#else + pthread_mutex_lock(fast_mutex); +#endif +} + +/************************************************************** +Releases ownership of a fast mutex. */ +UNIV_INTERN +void +os_fast_mutex_unlock( +/*=================*/ + os_fast_mutex_t* fast_mutex) /* in: mutex to release */ +{ +#ifdef __WIN__ + LeaveCriticalSection(fast_mutex); +#else + pthread_mutex_unlock(fast_mutex); +#endif +} + +/************************************************************** +Frees a mutex object. */ +UNIV_INTERN +void +os_fast_mutex_free( +/*===============*/ + os_fast_mutex_t* fast_mutex) /* in: mutex to free */ +{ +#ifdef __WIN__ + ut_a(fast_mutex); + + DeleteCriticalSection((LPCRITICAL_SECTION) fast_mutex); +#else + int ret; + + ret = pthread_mutex_destroy(fast_mutex); + + if (UNIV_UNLIKELY(ret != 0)) { + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: error: return value %lu when calling\n" + "InnoDB: pthread_mutex_destroy().\n", (ulint)ret); + fprintf(stderr, + "InnoDB: Byte contents of the pthread mutex at %p:\n", + (void*) fast_mutex); + ut_print_buf(stderr, fast_mutex, sizeof(os_fast_mutex_t)); + putc('\n', stderr); + } +#endif + if (UNIV_LIKELY(os_sync_mutex_inited)) { + /* When freeing the last mutexes, we have + already freed os_sync_mutex */ + + os_mutex_enter(os_sync_mutex); + } + + os_fast_mutex_count--; + + if (UNIV_LIKELY(os_sync_mutex_inited)) { + os_mutex_exit(os_sync_mutex); + } +} === added file 'storage/xtradb/os/os0thread.c' --- a/storage/xtradb/os/os0thread.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/os/os0thread.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,365 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +The interface to the operating system thread control primitives + +Created 9/8/1995 Heikki Tuuri +*******************************************************/ + +#include "os0thread.h" +#ifdef UNIV_NONINL +#include "os0thread.ic" +#endif + +#ifdef __WIN__ +#include <windows.h> +#endif + +#include "srv0srv.h" +#include "os0sync.h" + +/******************************************************************* +Compares two thread ids for equality. */ +UNIV_INTERN +ibool +os_thread_eq( +/*=========*/ + /* out: TRUE if equal */ + os_thread_id_t a, /* in: OS thread or thread id */ + os_thread_id_t b) /* in: OS thread or thread id */ +{ +#ifdef __WIN__ + if (a == b) { + return(TRUE); + } + + return(FALSE); +#else + if (pthread_equal(a, b)) { + return(TRUE); + } + + return(FALSE); +#endif +} + +/******************************************************************** +Converts an OS thread id to a ulint. It is NOT guaranteed that the ulint is +unique for the thread though! */ +UNIV_INTERN +ulint +os_thread_pf( +/*=========*/ + os_thread_id_t a) +{ +#ifdef UNIV_HPUX10 + /* In HP-UX-10.20 a pthread_t is a struct of 3 fields: field1, field2, + field3. We do not know if field1 determines the thread uniquely. */ + + return((ulint)(a.field1)); +#else + return((ulint)a); +#endif +} + +/********************************************************************* +Returns the thread identifier of current thread. Currently the thread +identifier in Unix is the thread handle itself. Note that in HP-UX +pthread_t is a struct of 3 fields. */ +UNIV_INTERN +os_thread_id_t +os_thread_get_curr_id(void) +/*=======================*/ +{ +#ifdef __WIN__ + return(GetCurrentThreadId()); +#else + return(pthread_self()); +#endif +} + +/******************************************************************** +Creates a new thread of execution. The execution starts from +the function given. The start function takes a void* parameter +and returns an ulint. */ +UNIV_INTERN +os_thread_t +os_thread_create( +/*=============*/ + /* out: handle to the thread */ +#ifndef __WIN__ + os_posix_f_t start_f, +#else + ulint (*start_f)(void*), /* in: pointer to function + from which to start */ +#endif + void* arg, /* in: argument to start + function */ + os_thread_id_t* thread_id) /* out: id of the created + thread, or NULL */ +{ +#ifdef __WIN__ + os_thread_t thread; + DWORD win_thread_id; + + os_mutex_enter(os_sync_mutex); + os_thread_count++; + os_mutex_exit(os_sync_mutex); + + thread = CreateThread(NULL, /* no security attributes */ + 0, /* default size stack */ + (LPTHREAD_START_ROUTINE)start_f, + arg, + 0, /* thread runs immediately */ + &win_thread_id); + + if (srv_set_thread_priorities) { + + /* Set created thread priority the same as a normal query + in MYSQL: we try to prevent starvation of threads by + assigning same priority QUERY_PRIOR to all */ + + ut_a(SetThreadPriority(thread, srv_query_thread_priority)); + } + + if (thread_id) { + *thread_id = win_thread_id; + } + + return(thread); +#else + int ret; + os_thread_t pthread; + pthread_attr_t attr; + +#if !(defined(UNIV_HOTBACKUP) && defined(UNIV_HPUX10)) + pthread_attr_init(&attr); +#endif + +#ifdef UNIV_AIX + /* We must make sure a thread stack is at least 32 kB, otherwise + InnoDB might crash; we do not know if the default stack size on + AIX is always big enough. An empirical test on AIX-4.3 suggested + the size was 96 kB, though. */ + + ret = pthread_attr_setstacksize(&attr, + (size_t)(PTHREAD_STACK_MIN + + 32 * 1024)); + if (ret) { + fprintf(stderr, + "InnoDB: Error: pthread_attr_setstacksize" + " returned %d\n", ret); + exit(1); + } +#endif +#ifdef __NETWARE__ + ret = pthread_attr_setstacksize(&attr, + (size_t) NW_THD_STACKSIZE); + if (ret) { + fprintf(stderr, + "InnoDB: Error: pthread_attr_setstacksize" + " returned %d\n", ret); + exit(1); + } +#endif + os_mutex_enter(os_sync_mutex); + os_thread_count++; + os_mutex_exit(os_sync_mutex); + +#if defined(UNIV_HOTBACKUP) && defined(UNIV_HPUX10) + ret = pthread_create(&pthread, pthread_attr_default, start_f, arg); +#else + ret = pthread_create(&pthread, &attr, start_f, arg); +#endif + if (ret) { + fprintf(stderr, + "InnoDB: Error: pthread_create returned %d\n", ret); + exit(1); + } + +#if !(defined(UNIV_HOTBACKUP) && defined(UNIV_HPUX10)) + pthread_attr_destroy(&attr); +#endif + if (srv_set_thread_priorities) { + + my_pthread_setprio(pthread, srv_query_thread_priority); + } + + if (thread_id) { + *thread_id = pthread; + } + + return(pthread); +#endif +} + +/********************************************************************* +Exits the current thread. */ +UNIV_INTERN +void +os_thread_exit( +/*===========*/ + void* exit_value) /* in: exit value; in Windows this void* + is cast as a DWORD */ +{ +#ifdef UNIV_DEBUG_THREAD_CREATION + fprintf(stderr, "Thread exits, id %lu\n", + os_thread_pf(os_thread_get_curr_id())); +#endif + os_mutex_enter(os_sync_mutex); + os_thread_count--; + os_mutex_exit(os_sync_mutex); + +#ifdef __WIN__ + ExitThread((DWORD)exit_value); +#else + pthread_exit(exit_value); +#endif +} + +/********************************************************************* +Returns handle to the current thread. */ +UNIV_INTERN +os_thread_t +os_thread_get_curr(void) +/*====================*/ +{ +#ifdef __WIN__ + return(GetCurrentThread()); +#else + return(pthread_self()); +#endif +} + +/********************************************************************* +Advises the os to give up remainder of the thread's time slice. */ +UNIV_INTERN +void +os_thread_yield(void) +/*=================*/ +{ +#if defined(__WIN__) + Sleep(0); +#elif (defined(HAVE_SCHED_YIELD) && defined(HAVE_SCHED_H)) + sched_yield(); +#elif defined(HAVE_PTHREAD_YIELD_ZERO_ARG) + pthread_yield(); +#elif defined(HAVE_PTHREAD_YIELD_ONE_ARG) + pthread_yield(0); +#else + os_thread_sleep(0); +#endif +} + +/********************************************************************* +The thread sleeps at least the time given in microseconds. */ +UNIV_INTERN +void +os_thread_sleep( +/*============*/ + ulint tm) /* in: time in microseconds */ +{ +#ifdef __WIN__ + Sleep((DWORD) tm / 1000); +#elif defined(__NETWARE__) + delay(tm / 1000); +#else + struct timeval t; + + t.tv_sec = tm / 1000000; + t.tv_usec = tm % 1000000; + + select(0, NULL, NULL, NULL, &t); +#endif +} + +/********************************************************************** +Sets a thread priority. */ +UNIV_INTERN +void +os_thread_set_priority( +/*===================*/ + os_thread_t handle, /* in: OS handle to the thread */ + ulint pri) /* in: priority */ +{ +#ifdef __WIN__ + int os_pri; + + if (pri == OS_THREAD_PRIORITY_BACKGROUND) { + os_pri = THREAD_PRIORITY_BELOW_NORMAL; + } else if (pri == OS_THREAD_PRIORITY_NORMAL) { + os_pri = THREAD_PRIORITY_NORMAL; + } else if (pri == OS_THREAD_PRIORITY_ABOVE_NORMAL) { + os_pri = THREAD_PRIORITY_HIGHEST; + } else { + ut_error; + } + + ut_a(SetThreadPriority(handle, os_pri)); +#else + UT_NOT_USED(handle); + UT_NOT_USED(pri); +#endif +} + +/********************************************************************** +Gets a thread priority. */ +UNIV_INTERN +ulint +os_thread_get_priority( +/*===================*/ + /* out: priority */ + os_thread_t handle __attribute__((unused))) + /* in: OS handle to the thread */ +{ +#ifdef __WIN__ + int os_pri; + ulint pri; + + os_pri = GetThreadPriority(handle); + + if (os_pri == THREAD_PRIORITY_BELOW_NORMAL) { + pri = OS_THREAD_PRIORITY_BACKGROUND; + } else if (os_pri == THREAD_PRIORITY_NORMAL) { + pri = OS_THREAD_PRIORITY_NORMAL; + } else if (os_pri == THREAD_PRIORITY_HIGHEST) { + pri = OS_THREAD_PRIORITY_ABOVE_NORMAL; + } else { + ut_error; + } + + return(pri); +#else + return(0); +#endif +} + +/********************************************************************** +Gets the last operating system error code for the calling thread. */ +UNIV_INTERN +ulint +os_thread_get_last_error(void) +/*==========================*/ +{ +#ifdef __WIN__ + return(GetLastError()); +#else + return(0); +#endif +} === added directory 'storage/xtradb/page' === added file 'storage/xtradb/page/page0cur.c' --- a/storage/xtradb/page/page0cur.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/page/page0cur.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,1922 @@ +/***************************************************************************** + +Copyright (c) 1994, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/************************************************************************ +The page cursor + +Created 10/4/1994 Heikki Tuuri +*************************************************************************/ + +#include "page0cur.h" +#ifdef UNIV_NONINL +#include "page0cur.ic" +#endif + +#include "page0zip.h" +#include "mtr0log.h" +#include "log0recv.h" +#include "rem0cmp.h" + +static ulint page_rnd = 976722341; + +#ifdef PAGE_CUR_ADAPT +# ifdef UNIV_SEARCH_PERF_STAT +static ulint page_cur_short_succ = 0; +# endif /* UNIV_SEARCH_PERF_STAT */ + +/******************************************************************** +Tries a search shortcut based on the last insert. */ +UNIV_INLINE +ibool +page_cur_try_search_shortcut( +/*=========================*/ + /* out: TRUE on success */ + const buf_block_t* block, /* in: index page */ + const dict_index_t* index, /* in: record descriptor */ + const dtuple_t* tuple, /* in: data tuple */ + ulint* iup_matched_fields, + /* in/out: already matched + fields in upper limit record */ + ulint* iup_matched_bytes, + /* in/out: already matched + bytes in a field not yet + completely matched */ + ulint* ilow_matched_fields, + /* in/out: already matched + fields in lower limit record */ + ulint* ilow_matched_bytes, + /* in/out: already matched + bytes in a field not yet + completely matched */ + page_cur_t* cursor) /* out: page cursor */ +{ + const rec_t* rec; + const rec_t* next_rec; + ulint low_match; + ulint low_bytes; + ulint up_match; + ulint up_bytes; +#ifdef UNIV_SEARCH_DEBUG + page_cur_t cursor2; +#endif + ibool success = FALSE; + const page_t* page = buf_block_get_frame(block); + mem_heap_t* heap = NULL; + ulint offsets_[REC_OFFS_NORMAL_SIZE]; + ulint* offsets = offsets_; + rec_offs_init(offsets_); + + ut_ad(dtuple_check_typed(tuple)); + + rec = page_header_get_ptr(page, PAGE_LAST_INSERT); + offsets = rec_get_offsets(rec, index, offsets, + dtuple_get_n_fields(tuple), &heap); + + ut_ad(rec); + ut_ad(page_rec_is_user_rec(rec)); + + ut_pair_min(&low_match, &low_bytes, + *ilow_matched_fields, *ilow_matched_bytes, + *iup_matched_fields, *iup_matched_bytes); + + up_match = low_match; + up_bytes = low_bytes; + + if (page_cmp_dtuple_rec_with_match(tuple, rec, offsets, + &low_match, &low_bytes) < 0) { + goto exit_func; + } + + next_rec = page_rec_get_next_const(rec); + offsets = rec_get_offsets(next_rec, index, offsets, + dtuple_get_n_fields(tuple), &heap); + + if (page_cmp_dtuple_rec_with_match(tuple, next_rec, offsets, + &up_match, &up_bytes) >= 0) { + goto exit_func; + } + + page_cur_position(rec, block, cursor); + +#ifdef UNIV_SEARCH_DEBUG + page_cur_search_with_match(block, index, tuple, PAGE_CUR_DBG, + iup_matched_fields, + iup_matched_bytes, + ilow_matched_fields, + ilow_matched_bytes, + &cursor2); + ut_a(cursor2.rec == cursor->rec); + + if (!page_rec_is_supremum(next_rec)) { + + ut_a(*iup_matched_fields == up_match); + ut_a(*iup_matched_bytes == up_bytes); + } + + ut_a(*ilow_matched_fields == low_match); + ut_a(*ilow_matched_bytes == low_bytes); +#endif + if (!page_rec_is_supremum(next_rec)) { + + *iup_matched_fields = up_match; + *iup_matched_bytes = up_bytes; + } + + *ilow_matched_fields = low_match; + *ilow_matched_bytes = low_bytes; + +#ifdef UNIV_SEARCH_PERF_STAT + page_cur_short_succ++; +#endif + success = TRUE; +exit_func: + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } + return(success); +} + +#endif + +#ifdef PAGE_CUR_LE_OR_EXTENDS +/******************************************************************** +Checks if the nth field in a record is a character type field which extends +the nth field in tuple, i.e., the field is longer or equal in length and has +common first characters. */ +static +ibool +page_cur_rec_field_extends( +/*=======================*/ + /* out: TRUE if rec field + extends tuple field */ + const dtuple_t* tuple, /* in: data tuple */ + const rec_t* rec, /* in: record */ + const ulint* offsets,/* in: array returned by rec_get_offsets() */ + ulint n) /* in: compare nth field */ +{ + const dtype_t* type; + const dfield_t* dfield; + const byte* rec_f; + ulint rec_f_len; + + ut_ad(rec_offs_validate(rec, NULL, offsets)); + dfield = dtuple_get_nth_field(tuple, n); + + type = dfield_get_type(dfield); + + rec_f = rec_get_nth_field(rec, offsets, n, &rec_f_len); + + if (type->mtype == DATA_VARCHAR + || type->mtype == DATA_CHAR + || type->mtype == DATA_FIXBINARY + || type->mtype == DATA_BINARY + || type->mtype == DATA_BLOB + || type->mtype == DATA_VARMYSQL + || type->mtype == DATA_MYSQL) { + + if (dfield_get_len(dfield) != UNIV_SQL_NULL + && rec_f_len != UNIV_SQL_NULL + && rec_f_len >= dfield_get_len(dfield) + && !cmp_data_data_slow(type->mtype, type->prtype, + dfield_get_data(dfield), + dfield_get_len(dfield), + rec_f, dfield_get_len(dfield))) { + + return(TRUE); + } + } + + return(FALSE); +} +#endif /* PAGE_CUR_LE_OR_EXTENDS */ + +/******************************************************************** +Searches the right position for a page cursor. */ +UNIV_INTERN +void +page_cur_search_with_match( +/*=======================*/ + const buf_block_t* block, /* in: buffer block */ + const dict_index_t* index, /* in: record descriptor */ + const dtuple_t* tuple, /* in: data tuple */ + ulint mode, /* in: PAGE_CUR_L, + PAGE_CUR_LE, PAGE_CUR_G, or + PAGE_CUR_GE */ + ulint* iup_matched_fields, + /* in/out: already matched + fields in upper limit record */ + ulint* iup_matched_bytes, + /* in/out: already matched + bytes in a field not yet + completely matched */ + ulint* ilow_matched_fields, + /* in/out: already matched + fields in lower limit record */ + ulint* ilow_matched_bytes, + /* in/out: already matched + bytes in a field not yet + completely matched */ + page_cur_t* cursor) /* out: page cursor */ +{ + ulint up; + ulint low; + ulint mid; + const page_t* page; + const page_dir_slot_t* slot; + const rec_t* up_rec; + const rec_t* low_rec; + const rec_t* mid_rec; + ulint up_matched_fields; + ulint up_matched_bytes; + ulint low_matched_fields; + ulint low_matched_bytes; + ulint cur_matched_fields; + ulint cur_matched_bytes; + int cmp; +#ifdef UNIV_SEARCH_DEBUG + int dbg_cmp; + ulint dbg_matched_fields; + ulint dbg_matched_bytes; +#endif +#ifdef UNIV_ZIP_DEBUG + const page_zip_des_t* page_zip = buf_block_get_page_zip(block); +#endif /* UNIV_ZIP_DEBUG */ + mem_heap_t* heap = NULL; + ulint offsets_[REC_OFFS_NORMAL_SIZE]; + ulint* offsets = offsets_; + rec_offs_init(offsets_); + + ut_ad(block && tuple && iup_matched_fields && iup_matched_bytes + && ilow_matched_fields && ilow_matched_bytes && cursor); + ut_ad(dtuple_validate(tuple)); +#ifdef UNIV_DEBUG +# ifdef PAGE_CUR_DBG + if (mode != PAGE_CUR_DBG) +# endif /* PAGE_CUR_DBG */ +# ifdef PAGE_CUR_LE_OR_EXTENDS + if (mode != PAGE_CUR_LE_OR_EXTENDS) +# endif /* PAGE_CUR_LE_OR_EXTENDS */ + ut_ad(mode == PAGE_CUR_L || mode == PAGE_CUR_LE + || mode == PAGE_CUR_G || mode == PAGE_CUR_GE); +#endif /* UNIV_DEBUG */ + page = buf_block_get_frame(block); +#ifdef UNIV_ZIP_DEBUG + ut_a(!page_zip || page_zip_validate(page_zip, page)); +#endif /* UNIV_ZIP_DEBUG */ + + page_check_dir(page); + +#ifdef PAGE_CUR_ADAPT + if (page_is_leaf(page) + && (mode == PAGE_CUR_LE) + && (page_header_get_field(page, PAGE_N_DIRECTION) > 3) + && (page_header_get_ptr(page, PAGE_LAST_INSERT)) + && (page_header_get_field(page, PAGE_DIRECTION) == PAGE_RIGHT)) { + + if (page_cur_try_search_shortcut( + block, index, tuple, + iup_matched_fields, iup_matched_bytes, + ilow_matched_fields, ilow_matched_bytes, + cursor)) { + return; + } + } +# ifdef PAGE_CUR_DBG + if (mode == PAGE_CUR_DBG) { + mode = PAGE_CUR_LE; + } +# endif +#endif + + /* The following flag does not work for non-latin1 char sets because + cmp_full_field does not tell how many bytes matched */ +#ifdef PAGE_CUR_LE_OR_EXTENDS + ut_a(mode != PAGE_CUR_LE_OR_EXTENDS); +#endif /* PAGE_CUR_LE_OR_EXTENDS */ + + /* If mode PAGE_CUR_G is specified, we are trying to position the + cursor to answer a query of the form "tuple < X", where tuple is + the input parameter, and X denotes an arbitrary physical record on + the page. We want to position the cursor on the first X which + satisfies the condition. */ + + up_matched_fields = *iup_matched_fields; + up_matched_bytes = *iup_matched_bytes; + low_matched_fields = *ilow_matched_fields; + low_matched_bytes = *ilow_matched_bytes; + + /* Perform binary search. First the search is done through the page + directory, after that as a linear search in the list of records + owned by the upper limit directory slot. */ + + low = 0; + up = page_dir_get_n_slots(page) - 1; + + /* Perform binary search until the lower and upper limit directory + slots come to the distance 1 of each other */ + + while (up - low > 1) { + mid = (low + up) / 2; + slot = page_dir_get_nth_slot(page, mid); + mid_rec = page_dir_slot_get_rec(slot); + + ut_pair_min(&cur_matched_fields, &cur_matched_bytes, + low_matched_fields, low_matched_bytes, + up_matched_fields, up_matched_bytes); + + offsets = rec_get_offsets(mid_rec, index, offsets, + dtuple_get_n_fields_cmp(tuple), + &heap); + + cmp = cmp_dtuple_rec_with_match(tuple, mid_rec, offsets, + &cur_matched_fields, + &cur_matched_bytes); + if (UNIV_LIKELY(cmp > 0)) { +low_slot_match: + low = mid; + low_matched_fields = cur_matched_fields; + low_matched_bytes = cur_matched_bytes; + + } else if (UNIV_EXPECT(cmp, -1)) { +#ifdef PAGE_CUR_LE_OR_EXTENDS + if (mode == PAGE_CUR_LE_OR_EXTENDS + && page_cur_rec_field_extends( + tuple, mid_rec, offsets, + cur_matched_fields)) { + + goto low_slot_match; + } +#endif /* PAGE_CUR_LE_OR_EXTENDS */ +up_slot_match: + up = mid; + up_matched_fields = cur_matched_fields; + up_matched_bytes = cur_matched_bytes; + + } else if (mode == PAGE_CUR_G || mode == PAGE_CUR_LE +#ifdef PAGE_CUR_LE_OR_EXTENDS + || mode == PAGE_CUR_LE_OR_EXTENDS +#endif /* PAGE_CUR_LE_OR_EXTENDS */ + ) { + + goto low_slot_match; + } else { + + goto up_slot_match; + } + } + + slot = page_dir_get_nth_slot(page, low); + low_rec = page_dir_slot_get_rec(slot); + slot = page_dir_get_nth_slot(page, up); + up_rec = page_dir_slot_get_rec(slot); + + /* Perform linear search until the upper and lower records come to + distance 1 of each other. */ + + while (page_rec_get_next_const(low_rec) != up_rec) { + + mid_rec = page_rec_get_next_const(low_rec); + + ut_pair_min(&cur_matched_fields, &cur_matched_bytes, + low_matched_fields, low_matched_bytes, + up_matched_fields, up_matched_bytes); + + offsets = rec_get_offsets(mid_rec, index, offsets, + dtuple_get_n_fields_cmp(tuple), + &heap); + + cmp = cmp_dtuple_rec_with_match(tuple, mid_rec, offsets, + &cur_matched_fields, + &cur_matched_bytes); + if (UNIV_LIKELY(cmp > 0)) { +low_rec_match: + low_rec = mid_rec; + low_matched_fields = cur_matched_fields; + low_matched_bytes = cur_matched_bytes; + + } else if (UNIV_EXPECT(cmp, -1)) { +#ifdef PAGE_CUR_LE_OR_EXTENDS + if (mode == PAGE_CUR_LE_OR_EXTENDS + && page_cur_rec_field_extends( + tuple, mid_rec, offsets, + cur_matched_fields)) { + + goto low_rec_match; + } +#endif /* PAGE_CUR_LE_OR_EXTENDS */ +up_rec_match: + up_rec = mid_rec; + up_matched_fields = cur_matched_fields; + up_matched_bytes = cur_matched_bytes; + } else if (mode == PAGE_CUR_G || mode == PAGE_CUR_LE +#ifdef PAGE_CUR_LE_OR_EXTENDS + || mode == PAGE_CUR_LE_OR_EXTENDS +#endif /* PAGE_CUR_LE_OR_EXTENDS */ + ) { + + goto low_rec_match; + } else { + + goto up_rec_match; + } + } + +#ifdef UNIV_SEARCH_DEBUG + + /* Check that the lower and upper limit records have the + right alphabetical order compared to tuple. */ + dbg_matched_fields = 0; + dbg_matched_bytes = 0; + + offsets = rec_get_offsets(low_rec, index, offsets, + ULINT_UNDEFINED, &heap); + dbg_cmp = page_cmp_dtuple_rec_with_match(tuple, low_rec, offsets, + &dbg_matched_fields, + &dbg_matched_bytes); + if (mode == PAGE_CUR_G) { + ut_a(dbg_cmp >= 0); + } else if (mode == PAGE_CUR_GE) { + ut_a(dbg_cmp == 1); + } else if (mode == PAGE_CUR_L) { + ut_a(dbg_cmp == 1); + } else if (mode == PAGE_CUR_LE) { + ut_a(dbg_cmp >= 0); + } + + if (!page_rec_is_infimum(low_rec)) { + + ut_a(low_matched_fields == dbg_matched_fields); + ut_a(low_matched_bytes == dbg_matched_bytes); + } + + dbg_matched_fields = 0; + dbg_matched_bytes = 0; + + offsets = rec_get_offsets(up_rec, index, offsets, + ULINT_UNDEFINED, &heap); + dbg_cmp = page_cmp_dtuple_rec_with_match(tuple, up_rec, offsets, + &dbg_matched_fields, + &dbg_matched_bytes); + if (mode == PAGE_CUR_G) { + ut_a(dbg_cmp == -1); + } else if (mode == PAGE_CUR_GE) { + ut_a(dbg_cmp <= 0); + } else if (mode == PAGE_CUR_L) { + ut_a(dbg_cmp <= 0); + } else if (mode == PAGE_CUR_LE) { + ut_a(dbg_cmp == -1); + } + + if (!page_rec_is_supremum(up_rec)) { + + ut_a(up_matched_fields == dbg_matched_fields); + ut_a(up_matched_bytes == dbg_matched_bytes); + } +#endif + if (mode <= PAGE_CUR_GE) { + page_cur_position(up_rec, block, cursor); + } else { + page_cur_position(low_rec, block, cursor); + } + + *iup_matched_fields = up_matched_fields; + *iup_matched_bytes = up_matched_bytes; + *ilow_matched_fields = low_matched_fields; + *ilow_matched_bytes = low_matched_bytes; + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } +} + +/*************************************************************** +Positions a page cursor on a randomly chosen user record on a page. If there +are no user records, sets the cursor on the infimum record. */ +UNIV_INTERN +void +page_cur_open_on_rnd_user_rec( +/*==========================*/ + buf_block_t* block, /* in: page */ + page_cur_t* cursor) /* out: page cursor */ +{ + ulint rnd; + ulint n_recs = page_get_n_recs(buf_block_get_frame(block)); + + page_cur_set_before_first(block, cursor); + + if (UNIV_UNLIKELY(n_recs == 0)) { + + return; + } + + page_rnd += 87584577; + + rnd = page_rnd % n_recs; + + do { + page_cur_move_to_next(cursor); + } while (rnd--); +} + +/*************************************************************** +Writes the log record of a record insert on a page. */ +static +void +page_cur_insert_rec_write_log( +/*==========================*/ + rec_t* insert_rec, /* in: inserted physical record */ + ulint rec_size, /* in: insert_rec size */ + rec_t* cursor_rec, /* in: record the + cursor is pointing to */ + dict_index_t* index, /* in: record descriptor */ + mtr_t* mtr) /* in: mini-transaction handle */ +{ + ulint cur_rec_size; + ulint extra_size; + ulint cur_extra_size; + const byte* ins_ptr; + byte* log_ptr; + const byte* log_end; + ulint i; + + ut_a(rec_size < UNIV_PAGE_SIZE); + ut_ad(page_align(insert_rec) == page_align(cursor_rec)); + ut_ad(!page_rec_is_comp(insert_rec) + == !dict_table_is_comp(index->table)); + + { + mem_heap_t* heap = NULL; + ulint cur_offs_[REC_OFFS_NORMAL_SIZE]; + ulint ins_offs_[REC_OFFS_NORMAL_SIZE]; + + ulint* cur_offs; + ulint* ins_offs; + + rec_offs_init(cur_offs_); + rec_offs_init(ins_offs_); + + cur_offs = rec_get_offsets(cursor_rec, index, cur_offs_, + ULINT_UNDEFINED, &heap); + ins_offs = rec_get_offsets(insert_rec, index, ins_offs_, + ULINT_UNDEFINED, &heap); + + extra_size = rec_offs_extra_size(ins_offs); + cur_extra_size = rec_offs_extra_size(cur_offs); + ut_ad(rec_size == rec_offs_size(ins_offs)); + cur_rec_size = rec_offs_size(cur_offs); + + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } + } + + ins_ptr = insert_rec - extra_size; + + i = 0; + + if (cur_extra_size == extra_size) { + ulint min_rec_size = ut_min(cur_rec_size, rec_size); + + const byte* cur_ptr = cursor_rec - cur_extra_size; + + /* Find out the first byte in insert_rec which differs from + cursor_rec; skip the bytes in the record info */ + + do { + if (*ins_ptr == *cur_ptr) { + i++; + ins_ptr++; + cur_ptr++; + } else if ((i < extra_size) + && (i >= extra_size + - page_rec_get_base_extra_size + (insert_rec))) { + i = extra_size; + ins_ptr = insert_rec; + cur_ptr = cursor_rec; + } else { + break; + } + } while (i < min_rec_size); + } + + if (mtr_get_log_mode(mtr) != MTR_LOG_SHORT_INSERTS) { + + if (page_rec_is_comp(insert_rec)) { + log_ptr = mlog_open_and_write_index( + mtr, insert_rec, index, MLOG_COMP_REC_INSERT, + 2 + 5 + 1 + 5 + 5 + MLOG_BUF_MARGIN); + if (UNIV_UNLIKELY(!log_ptr)) { + /* Logging in mtr is switched off + during crash recovery: in that case + mlog_open returns NULL */ + return; + } + } else { + log_ptr = mlog_open(mtr, 11 + + 2 + 5 + 1 + 5 + 5 + + MLOG_BUF_MARGIN); + if (UNIV_UNLIKELY(!log_ptr)) { + /* Logging in mtr is switched off + during crash recovery: in that case + mlog_open returns NULL */ + return; + } + + log_ptr = mlog_write_initial_log_record_fast( + insert_rec, MLOG_REC_INSERT, log_ptr, mtr); + } + + log_end = &log_ptr[2 + 5 + 1 + 5 + 5 + MLOG_BUF_MARGIN]; + /* Write the cursor rec offset as a 2-byte ulint */ + mach_write_to_2(log_ptr, page_offset(cursor_rec)); + log_ptr += 2; + } else { + log_ptr = mlog_open(mtr, 5 + 1 + 5 + 5 + MLOG_BUF_MARGIN); + if (!log_ptr) { + /* Logging in mtr is switched off during crash + recovery: in that case mlog_open returns NULL */ + return; + } + log_end = &log_ptr[5 + 1 + 5 + 5 + MLOG_BUF_MARGIN]; + } + + if (page_rec_is_comp(insert_rec)) { + if (UNIV_UNLIKELY + (rec_get_info_and_status_bits(insert_rec, TRUE) + != rec_get_info_and_status_bits(cursor_rec, TRUE))) { + + goto need_extra_info; + } + } else { + if (UNIV_UNLIKELY + (rec_get_info_and_status_bits(insert_rec, FALSE) + != rec_get_info_and_status_bits(cursor_rec, FALSE))) { + + goto need_extra_info; + } + } + + if (extra_size != cur_extra_size || rec_size != cur_rec_size) { +need_extra_info: + /* Write the record end segment length + and the extra info storage flag */ + log_ptr += mach_write_compressed(log_ptr, + 2 * (rec_size - i) + 1); + + /* Write the info bits */ + mach_write_to_1(log_ptr, + rec_get_info_and_status_bits( + insert_rec, + page_rec_is_comp(insert_rec))); + log_ptr++; + + /* Write the record origin offset */ + log_ptr += mach_write_compressed(log_ptr, extra_size); + + /* Write the mismatch index */ + log_ptr += mach_write_compressed(log_ptr, i); + + ut_a(i < UNIV_PAGE_SIZE); + ut_a(extra_size < UNIV_PAGE_SIZE); + } else { + /* Write the record end segment length + and the extra info storage flag */ + log_ptr += mach_write_compressed(log_ptr, 2 * (rec_size - i)); + } + + /* Write to the log the inserted index record end segment which + differs from the cursor record */ + + rec_size -= i; + + if (log_ptr + rec_size <= log_end) { + memcpy(log_ptr, ins_ptr, rec_size); + mlog_close(mtr, log_ptr + rec_size); + } else { + mlog_close(mtr, log_ptr); + ut_a(rec_size < UNIV_PAGE_SIZE); + mlog_catenate_string(mtr, ins_ptr, rec_size); + } +} + +/*************************************************************** +Parses a log record of a record insert on a page. */ +UNIV_INTERN +byte* +page_cur_parse_insert_rec( +/*======================*/ + /* out: end of log record or NULL */ + ibool is_short,/* in: TRUE if short inserts */ + byte* ptr, /* in: buffer */ + byte* end_ptr,/* in: buffer end */ + buf_block_t* block, /* in: page or NULL */ + dict_index_t* index, /* in: record descriptor */ + mtr_t* mtr) /* in: mtr or NULL */ +{ + ulint origin_offset; + ulint end_seg_len; + ulint mismatch_index; + page_t* page; + rec_t* cursor_rec; + byte buf1[1024]; + byte* buf; + byte* ptr2 = ptr; + ulint info_and_status_bits = 0; /* remove warning */ + page_cur_t cursor; + mem_heap_t* heap = NULL; + ulint offsets_[REC_OFFS_NORMAL_SIZE]; + ulint* offsets = offsets_; + rec_offs_init(offsets_); + + page = block ? buf_block_get_frame(block) : NULL; + + if (is_short) { + cursor_rec = page_rec_get_prev(page_get_supremum_rec(page)); + } else { + ulint offset; + + /* Read the cursor rec offset as a 2-byte ulint */ + + if (UNIV_UNLIKELY(end_ptr < ptr + 2)) { + + return(NULL); + } + + offset = mach_read_from_2(ptr); + ptr += 2; + + cursor_rec = page + offset; + + if (UNIV_UNLIKELY(offset >= UNIV_PAGE_SIZE)) { + + recv_sys->found_corrupt_log = TRUE; + + return(NULL); + } + } + + ptr = mach_parse_compressed(ptr, end_ptr, &end_seg_len); + + if (ptr == NULL) { + + return(NULL); + } + + if (UNIV_UNLIKELY(end_seg_len >= UNIV_PAGE_SIZE << 1)) { + recv_sys->found_corrupt_log = TRUE; + + return(NULL); + } + + if (end_seg_len & 0x1UL) { + /* Read the info bits */ + + if (end_ptr < ptr + 1) { + + return(NULL); + } + + info_and_status_bits = mach_read_from_1(ptr); + ptr++; + + ptr = mach_parse_compressed(ptr, end_ptr, &origin_offset); + + if (ptr == NULL) { + + return(NULL); + } + + ut_a(origin_offset < UNIV_PAGE_SIZE); + + ptr = mach_parse_compressed(ptr, end_ptr, &mismatch_index); + + if (ptr == NULL) { + + return(NULL); + } + + ut_a(mismatch_index < UNIV_PAGE_SIZE); + } + + if (UNIV_UNLIKELY(end_ptr < ptr + (end_seg_len >> 1))) { + + return(NULL); + } + + if (!block) { + + return(ptr + (end_seg_len >> 1)); + } + + ut_ad(!!page_is_comp(page) == dict_table_is_comp(index->table)); + ut_ad(!buf_block_get_page_zip(block) || page_is_comp(page)); + + /* Read from the log the inserted index record end segment which + differs from the cursor record */ + + offsets = rec_get_offsets(cursor_rec, index, offsets, + ULINT_UNDEFINED, &heap); + + if (!(end_seg_len & 0x1UL)) { + info_and_status_bits = rec_get_info_and_status_bits( + cursor_rec, page_is_comp(page)); + origin_offset = rec_offs_extra_size(offsets); + mismatch_index = rec_offs_size(offsets) - (end_seg_len >> 1); + } + + end_seg_len >>= 1; + + if (mismatch_index + end_seg_len < sizeof buf1) { + buf = buf1; + } else { + buf = mem_alloc(mismatch_index + end_seg_len); + } + + /* Build the inserted record to buf */ + + if (UNIV_UNLIKELY(mismatch_index >= UNIV_PAGE_SIZE)) { + fprintf(stderr, + "Is short %lu, info_and_status_bits %lu, offset %lu, " + "o_offset %lu\n" + "mismatch index %lu, end_seg_len %lu\n" + "parsed len %lu\n", + (ulong) is_short, (ulong) info_and_status_bits, + (ulong) page_offset(cursor_rec), + (ulong) origin_offset, + (ulong) mismatch_index, (ulong) end_seg_len, + (ulong) (ptr - ptr2)); + + fputs("Dump of 300 bytes of log:\n", stderr); + ut_print_buf(stderr, ptr2, 300); + putc('\n', stderr); + + buf_page_print(page, 0); + + ut_error; + } + + ut_memcpy(buf, rec_get_start(cursor_rec, offsets), mismatch_index); + ut_memcpy(buf + mismatch_index, ptr, end_seg_len); + + if (page_is_comp(page)) { + rec_set_info_and_status_bits(buf + origin_offset, + info_and_status_bits); + } else { + rec_set_info_bits_old(buf + origin_offset, + info_and_status_bits); + } + + page_cur_position(cursor_rec, block, &cursor); + + offsets = rec_get_offsets(buf + origin_offset, index, offsets, + ULINT_UNDEFINED, &heap); + if (UNIV_UNLIKELY(!page_cur_rec_insert(&cursor, + buf + origin_offset, + index, offsets, mtr))) { + /* The redo log record should only have been written + after the write was successful. */ + ut_error; + } + + if (buf != buf1) { + + mem_free(buf); + } + + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } + + return(ptr + end_seg_len); +} + +/*************************************************************** +Inserts a record next to page cursor on an uncompressed page. +Returns pointer to inserted record if succeed, i.e., enough +space available, NULL otherwise. The cursor stays at the same position. */ +UNIV_INTERN +rec_t* +page_cur_insert_rec_low( +/*====================*/ + /* out: pointer to record if succeed, NULL + otherwise */ + rec_t* current_rec,/* in: pointer to current record after + which the new record is inserted */ + dict_index_t* index, /* in: record descriptor */ + const rec_t* rec, /* in: pointer to a physical record */ + ulint* offsets,/* in/out: rec_get_offsets(rec, index) */ + mtr_t* mtr) /* in: mini-transaction handle, or NULL */ +{ + byte* insert_buf; + ulint rec_size; + page_t* page; /* the relevant page */ + rec_t* last_insert; /* cursor position at previous + insert */ + rec_t* free_rec; /* a free record that was reused, + or NULL */ + rec_t* insert_rec; /* inserted record */ + ulint heap_no; /* heap number of the inserted + record */ + + ut_ad(rec_offs_validate(rec, index, offsets)); + + page = page_align(current_rec); + ut_ad(dict_table_is_comp(index->table) + == (ibool) !!page_is_comp(page)); + + ut_ad(!page_rec_is_supremum(current_rec)); + + /* 1. Get the size of the physical record in the page */ + rec_size = rec_offs_size(offsets); + +#ifdef UNIV_DEBUG_VALGRIND + { + const void* rec_start + = rec - rec_offs_extra_size(offsets); + ulint extra_size + = rec_offs_extra_size(offsets) + - (rec_offs_comp(offsets) + ? REC_N_NEW_EXTRA_BYTES + : REC_N_OLD_EXTRA_BYTES); + + /* All data bytes of the record must be valid. */ + UNIV_MEM_ASSERT_RW(rec, rec_offs_data_size(offsets)); + /* The variable-length header must be valid. */ + UNIV_MEM_ASSERT_RW(rec_start, extra_size); + } +#endif /* UNIV_DEBUG_VALGRIND */ + + /* 2. Try to find suitable space from page memory management */ + + free_rec = page_header_get_ptr(page, PAGE_FREE); + if (UNIV_LIKELY_NULL(free_rec)) { + /* Try to allocate from the head of the free list. */ + ulint foffsets_[REC_OFFS_NORMAL_SIZE]; + ulint* foffsets = foffsets_; + mem_heap_t* heap = NULL; + + rec_offs_init(foffsets_); + + foffsets = rec_get_offsets(free_rec, index, foffsets, + ULINT_UNDEFINED, &heap); + if (rec_offs_size(foffsets) < rec_size) { + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } + + goto use_heap; + } + + insert_buf = free_rec - rec_offs_extra_size(foffsets); + + if (page_is_comp(page)) { + heap_no = rec_get_heap_no_new(free_rec); + page_mem_alloc_free(page, NULL, + rec_get_next_ptr(free_rec, TRUE), + rec_size); + } else { + heap_no = rec_get_heap_no_old(free_rec); + page_mem_alloc_free(page, NULL, + rec_get_next_ptr(free_rec, FALSE), + rec_size); + } + + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } + } else { +use_heap: + free_rec = NULL; + insert_buf = page_mem_alloc_heap(page, NULL, + rec_size, &heap_no); + + if (UNIV_UNLIKELY(insert_buf == NULL)) { + return(NULL); + } + } + + /* 3. Create the record */ + insert_rec = rec_copy(insert_buf, rec, offsets); + rec_offs_make_valid(insert_rec, index, offsets); + + /* 4. Insert the record in the linked list of records */ + ut_ad(current_rec != insert_rec); + + { + /* next record after current before the insertion */ + rec_t* next_rec = page_rec_get_next(current_rec); +#ifdef UNIV_DEBUG + if (page_is_comp(page)) { + ut_ad(rec_get_status(current_rec) + <= REC_STATUS_INFIMUM); + ut_ad(rec_get_status(insert_rec) < REC_STATUS_INFIMUM); + ut_ad(rec_get_status(next_rec) != REC_STATUS_INFIMUM); + } +#endif + page_rec_set_next(insert_rec, next_rec); + page_rec_set_next(current_rec, insert_rec); + } + + page_header_set_field(page, NULL, PAGE_N_RECS, + 1 + page_get_n_recs(page)); + + /* 5. Set the n_owned field in the inserted record to zero, + and set the heap_no field */ + if (page_is_comp(page)) { + rec_set_n_owned_new(insert_rec, NULL, 0); + rec_set_heap_no_new(insert_rec, heap_no); + } else { + rec_set_n_owned_old(insert_rec, 0); + rec_set_heap_no_old(insert_rec, heap_no); + } + + UNIV_MEM_ASSERT_RW(rec_get_start(insert_rec, offsets), + rec_offs_size(offsets)); + /* 6. Update the last insertion info in page header */ + + last_insert = page_header_get_ptr(page, PAGE_LAST_INSERT); + ut_ad(!last_insert || !page_is_comp(page) + || rec_get_node_ptr_flag(last_insert) + == rec_get_node_ptr_flag(insert_rec)); + + if (UNIV_UNLIKELY(last_insert == NULL)) { + page_header_set_field(page, NULL, PAGE_DIRECTION, + PAGE_NO_DIRECTION); + page_header_set_field(page, NULL, PAGE_N_DIRECTION, 0); + + } else if ((last_insert == current_rec) + && (page_header_get_field(page, PAGE_DIRECTION) + != PAGE_LEFT)) { + + page_header_set_field(page, NULL, PAGE_DIRECTION, + PAGE_RIGHT); + page_header_set_field(page, NULL, PAGE_N_DIRECTION, + page_header_get_field( + page, PAGE_N_DIRECTION) + 1); + + } else if ((page_rec_get_next(insert_rec) == last_insert) + && (page_header_get_field(page, PAGE_DIRECTION) + != PAGE_RIGHT)) { + + page_header_set_field(page, NULL, PAGE_DIRECTION, + PAGE_LEFT); + page_header_set_field(page, NULL, PAGE_N_DIRECTION, + page_header_get_field( + page, PAGE_N_DIRECTION) + 1); + } else { + page_header_set_field(page, NULL, PAGE_DIRECTION, + PAGE_NO_DIRECTION); + page_header_set_field(page, NULL, PAGE_N_DIRECTION, 0); + } + + page_header_set_ptr(page, NULL, PAGE_LAST_INSERT, insert_rec); + + /* 7. It remains to update the owner record. */ + { + rec_t* owner_rec = page_rec_find_owner_rec(insert_rec); + ulint n_owned; + if (page_is_comp(page)) { + n_owned = rec_get_n_owned_new(owner_rec); + rec_set_n_owned_new(owner_rec, NULL, n_owned + 1); + } else { + n_owned = rec_get_n_owned_old(owner_rec); + rec_set_n_owned_old(owner_rec, n_owned + 1); + } + + /* 8. Now we have incremented the n_owned field of the owner + record. If the number exceeds PAGE_DIR_SLOT_MAX_N_OWNED, + we have to split the corresponding directory slot in two. */ + + if (UNIV_UNLIKELY(n_owned == PAGE_DIR_SLOT_MAX_N_OWNED)) { + page_dir_split_slot( + page, NULL, + page_dir_find_owner_slot(owner_rec)); + } + } + + /* 9. Write log record of the insert */ + if (UNIV_LIKELY(mtr != NULL)) { + page_cur_insert_rec_write_log(insert_rec, rec_size, + current_rec, index, mtr); + } + + return(insert_rec); +} + +/*************************************************************** +Compresses or reorganizes a page after an optimistic insert. */ +static +rec_t* +page_cur_insert_rec_zip_reorg( +/*==========================*/ + /* out: rec if succeed, NULL otherwise */ + rec_t** current_rec,/* in/out: pointer to current record after + which the new record is inserted */ + buf_block_t* block, /* in: buffer block */ + dict_index_t* index, /* in: record descriptor */ + rec_t* rec, /* in: inserted record */ + page_t* page, /* in: uncompressed page */ + page_zip_des_t* page_zip,/* in: compressed page */ + mtr_t* mtr) /* in: mini-transaction, or NULL */ +{ + ulint pos; + + /* Recompress or reorganize and recompress the page. */ + if (UNIV_LIKELY(page_zip_compress(page_zip, page, index, mtr))) { + return(rec); + } + + /* Before trying to reorganize the page, + store the number of preceding records on the page. */ + pos = page_rec_get_n_recs_before(rec); + + if (page_zip_reorganize(block, index, mtr)) { + /* The page was reorganized: Find rec by seeking to pos, + and update *current_rec. */ + rec = page + PAGE_NEW_INFIMUM; + + while (--pos) { + rec = page + rec_get_next_offs(rec, TRUE); + } + + *current_rec = rec; + rec = page + rec_get_next_offs(rec, TRUE); + + return(rec); + } + + /* Out of space: restore the page */ + if (!page_zip_decompress(page_zip, page)) { + ut_error; /* Memory corrupted? */ + } + ut_ad(page_validate(page, index)); + return(NULL); +} + +/*************************************************************** +Inserts a record next to page cursor on a compressed and uncompressed +page. Returns pointer to inserted record if succeed, i.e., +enough space available, NULL otherwise. +The cursor stays at the same position. */ +UNIV_INTERN +rec_t* +page_cur_insert_rec_zip( +/*====================*/ + /* out: pointer to record if succeed, NULL + otherwise */ + rec_t** current_rec,/* in/out: pointer to current record after + which the new record is inserted */ + buf_block_t* block, /* in: buffer block of *current_rec */ + dict_index_t* index, /* in: record descriptor */ + const rec_t* rec, /* in: pointer to a physical record */ + ulint* offsets,/* in/out: rec_get_offsets(rec, index) */ + mtr_t* mtr) /* in: mini-transaction handle, or NULL */ +{ + byte* insert_buf; + ulint rec_size; + page_t* page; /* the relevant page */ + rec_t* last_insert; /* cursor position at previous + insert */ + rec_t* free_rec; /* a free record that was reused, + or NULL */ + rec_t* insert_rec; /* inserted record */ + ulint heap_no; /* heap number of the inserted + record */ + page_zip_des_t* page_zip; + + page_zip = buf_block_get_page_zip(block); + ut_ad(page_zip); + + ut_ad(rec_offs_validate(rec, index, offsets)); + + page = page_align(*current_rec); + ut_ad(dict_table_is_comp(index->table)); + ut_ad(page_is_comp(page)); + + ut_ad(!page_rec_is_supremum(*current_rec)); +#ifdef UNIV_ZIP_DEBUG + ut_a(page_zip_validate(page_zip, page)); +#endif /* UNIV_ZIP_DEBUG */ + + /* 1. Get the size of the physical record in the page */ + rec_size = rec_offs_size(offsets); + +#ifdef UNIV_DEBUG_VALGRIND + { + const void* rec_start + = rec - rec_offs_extra_size(offsets); + ulint extra_size + = rec_offs_extra_size(offsets) + - (rec_offs_comp(offsets) + ? REC_N_NEW_EXTRA_BYTES + : REC_N_OLD_EXTRA_BYTES); + + /* All data bytes of the record must be valid. */ + UNIV_MEM_ASSERT_RW(rec, rec_offs_data_size(offsets)); + /* The variable-length header must be valid. */ + UNIV_MEM_ASSERT_RW(rec_start, extra_size); + } +#endif /* UNIV_DEBUG_VALGRIND */ + + /* 2. Try to find suitable space from page memory management */ + if (!page_zip_available(page_zip, dict_index_is_clust(index), + rec_size, 1)) { + + /* Try compressing the whole page afterwards. */ + insert_rec = page_cur_insert_rec_low(*current_rec, + index, rec, offsets, + NULL); + + if (UNIV_LIKELY(insert_rec != NULL)) { + insert_rec = page_cur_insert_rec_zip_reorg( + current_rec, block, index, insert_rec, + page, page_zip, mtr); + } + + return(insert_rec); + } + + free_rec = page_header_get_ptr(page, PAGE_FREE); + if (UNIV_LIKELY_NULL(free_rec)) { + /* Try to allocate from the head of the free list. */ + lint extra_size_diff; + ulint foffsets_[REC_OFFS_NORMAL_SIZE]; + ulint* foffsets = foffsets_; + mem_heap_t* heap = NULL; + + rec_offs_init(foffsets_); + + foffsets = rec_get_offsets(free_rec, index, foffsets, + ULINT_UNDEFINED, &heap); + if (rec_offs_size(foffsets) < rec_size) { +too_small: + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } + + goto use_heap; + } + + insert_buf = free_rec - rec_offs_extra_size(foffsets); + + /* On compressed pages, do not relocate records from + the free list. If extra_size would grow, use the heap. */ + extra_size_diff + = rec_offs_extra_size(offsets) + - rec_offs_extra_size(foffsets); + + if (UNIV_UNLIKELY(extra_size_diff < 0)) { + /* Add an offset to the extra_size. */ + if (rec_offs_size(foffsets) + < rec_size - extra_size_diff) { + + goto too_small; + } + + insert_buf -= extra_size_diff; + } else if (UNIV_UNLIKELY(extra_size_diff)) { + /* Do not allow extra_size to grow */ + + goto too_small; + } + + heap_no = rec_get_heap_no_new(free_rec); + page_mem_alloc_free(page, page_zip, + rec_get_next_ptr(free_rec, TRUE), + rec_size); + + if (!page_is_leaf(page)) { + /* Zero out the node pointer of free_rec, + in case it will not be overwritten by + insert_rec. */ + + ut_ad(rec_size > REC_NODE_PTR_SIZE); + + if (rec_offs_extra_size(foffsets) + + rec_offs_data_size(foffsets) > rec_size) { + + memset(rec_get_end(free_rec, foffsets) + - REC_NODE_PTR_SIZE, 0, + REC_NODE_PTR_SIZE); + } + } else if (dict_index_is_clust(index)) { + /* Zero out the DB_TRX_ID and DB_ROLL_PTR + columns of free_rec, in case it will not be + overwritten by insert_rec. */ + + ulint trx_id_col; + ulint trx_id_offs; + ulint len; + + trx_id_col = dict_index_get_sys_col_pos(index, + DATA_TRX_ID); + ut_ad(trx_id_col > 0); + ut_ad(trx_id_col != ULINT_UNDEFINED); + + trx_id_offs = rec_get_nth_field_offs(foffsets, + trx_id_col, &len); + ut_ad(len == DATA_TRX_ID_LEN); + + if (DATA_TRX_ID_LEN + DATA_ROLL_PTR_LEN + trx_id_offs + + rec_offs_extra_size(foffsets) > rec_size) { + /* We will have to zero out the + DB_TRX_ID and DB_ROLL_PTR, because + they will not be fully overwritten by + insert_rec. */ + + memset(free_rec + trx_id_offs, 0, + DATA_TRX_ID_LEN + DATA_ROLL_PTR_LEN); + } + + ut_ad(free_rec + trx_id_offs + DATA_TRX_ID_LEN + == rec_get_nth_field(free_rec, foffsets, + trx_id_col + 1, &len)); + ut_ad(len == DATA_ROLL_PTR_LEN); + } + + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } + } else { +use_heap: + free_rec = NULL; + insert_buf = page_mem_alloc_heap(page, page_zip, + rec_size, &heap_no); + + if (UNIV_UNLIKELY(insert_buf == NULL)) { + return(NULL); + } + + page_zip_dir_add_slot(page_zip, dict_index_is_clust(index)); + } + + /* 3. Create the record */ + insert_rec = rec_copy(insert_buf, rec, offsets); + rec_offs_make_valid(insert_rec, index, offsets); + + /* 4. Insert the record in the linked list of records */ + ut_ad(*current_rec != insert_rec); + + { + /* next record after current before the insertion */ + rec_t* next_rec = page_rec_get_next(*current_rec); + ut_ad(rec_get_status(*current_rec) + <= REC_STATUS_INFIMUM); + ut_ad(rec_get_status(insert_rec) < REC_STATUS_INFIMUM); + ut_ad(rec_get_status(next_rec) != REC_STATUS_INFIMUM); + + page_rec_set_next(insert_rec, next_rec); + page_rec_set_next(*current_rec, insert_rec); + } + + page_header_set_field(page, page_zip, PAGE_N_RECS, + 1 + page_get_n_recs(page)); + + /* 5. Set the n_owned field in the inserted record to zero, + and set the heap_no field */ + rec_set_n_owned_new(insert_rec, NULL, 0); + rec_set_heap_no_new(insert_rec, heap_no); + + UNIV_MEM_ASSERT_RW(rec_get_start(insert_rec, offsets), + rec_offs_size(offsets)); + + page_zip_dir_insert(page_zip, *current_rec, free_rec, insert_rec); + + /* 6. Update the last insertion info in page header */ + + last_insert = page_header_get_ptr(page, PAGE_LAST_INSERT); + ut_ad(!last_insert + || rec_get_node_ptr_flag(last_insert) + == rec_get_node_ptr_flag(insert_rec)); + + if (UNIV_UNLIKELY(last_insert == NULL)) { + page_header_set_field(page, page_zip, PAGE_DIRECTION, + PAGE_NO_DIRECTION); + page_header_set_field(page, page_zip, PAGE_N_DIRECTION, 0); + + } else if ((last_insert == *current_rec) + && (page_header_get_field(page, PAGE_DIRECTION) + != PAGE_LEFT)) { + + page_header_set_field(page, page_zip, PAGE_DIRECTION, + PAGE_RIGHT); + page_header_set_field(page, page_zip, PAGE_N_DIRECTION, + page_header_get_field( + page, PAGE_N_DIRECTION) + 1); + + } else if ((page_rec_get_next(insert_rec) == last_insert) + && (page_header_get_field(page, PAGE_DIRECTION) + != PAGE_RIGHT)) { + + page_header_set_field(page, page_zip, PAGE_DIRECTION, + PAGE_LEFT); + page_header_set_field(page, page_zip, PAGE_N_DIRECTION, + page_header_get_field( + page, PAGE_N_DIRECTION) + 1); + } else { + page_header_set_field(page, page_zip, PAGE_DIRECTION, + PAGE_NO_DIRECTION); + page_header_set_field(page, page_zip, PAGE_N_DIRECTION, 0); + } + + page_header_set_ptr(page, page_zip, PAGE_LAST_INSERT, insert_rec); + + /* 7. It remains to update the owner record. */ + { + rec_t* owner_rec = page_rec_find_owner_rec(insert_rec); + ulint n_owned; + + n_owned = rec_get_n_owned_new(owner_rec); + rec_set_n_owned_new(owner_rec, page_zip, n_owned + 1); + + /* 8. Now we have incremented the n_owned field of the owner + record. If the number exceeds PAGE_DIR_SLOT_MAX_N_OWNED, + we have to split the corresponding directory slot in two. */ + + if (UNIV_UNLIKELY(n_owned == PAGE_DIR_SLOT_MAX_N_OWNED)) { + page_dir_split_slot( + page, page_zip, + page_dir_find_owner_slot(owner_rec)); + } + } + + page_zip_write_rec(page_zip, insert_rec, index, offsets, 1); + + /* 9. Write log record of the insert */ + if (UNIV_LIKELY(mtr != NULL)) { + page_cur_insert_rec_write_log(insert_rec, rec_size, + *current_rec, index, mtr); + } + + return(insert_rec); +} + +/************************************************************** +Writes a log record of copying a record list end to a new created page. */ +UNIV_INLINE +byte* +page_copy_rec_list_to_created_page_write_log( +/*=========================================*/ + /* out: 4-byte field where to + write the log data length, + or NULL if logging is disabled */ + page_t* page, /* in: index page */ + dict_index_t* index, /* in: record descriptor */ + mtr_t* mtr) /* in: mtr */ +{ + byte* log_ptr; + + ut_ad(!!page_is_comp(page) == dict_table_is_comp(index->table)); + + log_ptr = mlog_open_and_write_index(mtr, page, index, + page_is_comp(page) + ? MLOG_COMP_LIST_END_COPY_CREATED + : MLOG_LIST_END_COPY_CREATED, 4); + if (UNIV_LIKELY(log_ptr != NULL)) { + mlog_close(mtr, log_ptr + 4); + } + + return(log_ptr); +} + +/************************************************************** +Parses a log record of copying a record list end to a new created page. */ +UNIV_INTERN +byte* +page_parse_copy_rec_list_to_created_page( +/*=====================================*/ + /* out: end of log record or NULL */ + byte* ptr, /* in: buffer */ + byte* end_ptr,/* in: buffer end */ + buf_block_t* block, /* in: page or NULL */ + dict_index_t* index, /* in: record descriptor */ + mtr_t* mtr) /* in: mtr or NULL */ +{ + byte* rec_end; + ulint log_data_len; + page_t* page; + page_zip_des_t* page_zip; + + if (ptr + 4 > end_ptr) { + + return(NULL); + } + + log_data_len = mach_read_from_4(ptr); + ptr += 4; + + rec_end = ptr + log_data_len; + + if (rec_end > end_ptr) { + + return(NULL); + } + + if (!block) { + + return(rec_end); + } + + while (ptr < rec_end) { + ptr = page_cur_parse_insert_rec(TRUE, ptr, end_ptr, + block, index, mtr); + } + + ut_a(ptr == rec_end); + + page = buf_block_get_frame(block); + page_zip = buf_block_get_page_zip(block); + + page_header_set_ptr(page, page_zip, PAGE_LAST_INSERT, NULL); + page_header_set_field(page, page_zip, PAGE_DIRECTION, + PAGE_NO_DIRECTION); + page_header_set_field(page, page_zip, PAGE_N_DIRECTION, 0); + + return(rec_end); +} + +/***************************************************************** +Copies records from page to a newly created page, from a given record onward, +including that record. Infimum and supremum records are not copied. */ +UNIV_INTERN +void +page_copy_rec_list_end_to_created_page( +/*===================================*/ + page_t* new_page, /* in/out: index page to copy to */ + rec_t* rec, /* in: first record to copy */ + dict_index_t* index, /* in: record descriptor */ + mtr_t* mtr) /* in: mtr */ +{ + page_dir_slot_t* slot = 0; /* remove warning */ + byte* heap_top; + rec_t* insert_rec = 0; /* remove warning */ + rec_t* prev_rec; + ulint count; + ulint n_recs; + ulint slot_index; + ulint rec_size; + ulint log_mode; + byte* log_ptr; + ulint log_data_len; + mem_heap_t* heap = NULL; + ulint offsets_[REC_OFFS_NORMAL_SIZE]; + ulint* offsets = offsets_; + rec_offs_init(offsets_); + + ut_ad(page_dir_get_n_heap(new_page) == PAGE_HEAP_NO_USER_LOW); + ut_ad(page_align(rec) != new_page); + ut_ad(page_rec_is_comp(rec) == page_is_comp(new_page)); + + if (page_rec_is_infimum(rec)) { + + rec = page_rec_get_next(rec); + } + + if (page_rec_is_supremum(rec)) { + + return; + } + +#ifdef UNIV_DEBUG + /* To pass the debug tests we have to set these dummy values + in the debug version */ + page_dir_set_n_slots(new_page, NULL, UNIV_PAGE_SIZE / 2); + page_header_set_ptr(new_page, NULL, PAGE_HEAP_TOP, + new_page + UNIV_PAGE_SIZE - 1); +#endif + + log_ptr = page_copy_rec_list_to_created_page_write_log(new_page, + index, mtr); + + log_data_len = dyn_array_get_data_size(&(mtr->log)); + + /* Individual inserts are logged in a shorter form */ + + log_mode = mtr_set_log_mode(mtr, MTR_LOG_SHORT_INSERTS); + + prev_rec = page_get_infimum_rec(new_page); + if (page_is_comp(new_page)) { + heap_top = new_page + PAGE_NEW_SUPREMUM_END; + } else { + heap_top = new_page + PAGE_OLD_SUPREMUM_END; + } + count = 0; + slot_index = 0; + n_recs = 0; + + do { + offsets = rec_get_offsets(rec, index, offsets, + ULINT_UNDEFINED, &heap); + insert_rec = rec_copy(heap_top, rec, offsets); + + if (page_is_comp(new_page)) { + rec_set_next_offs_new(prev_rec, + page_offset(insert_rec)); + + rec_set_n_owned_new(insert_rec, NULL, 0); + rec_set_heap_no_new(insert_rec, + PAGE_HEAP_NO_USER_LOW + n_recs); + } else { + rec_set_next_offs_old(prev_rec, + page_offset(insert_rec)); + + rec_set_n_owned_old(insert_rec, 0); + rec_set_heap_no_old(insert_rec, + PAGE_HEAP_NO_USER_LOW + n_recs); + } + + count++; + n_recs++; + + if (UNIV_UNLIKELY + (count == (PAGE_DIR_SLOT_MAX_N_OWNED + 1) / 2)) { + + slot_index++; + + slot = page_dir_get_nth_slot(new_page, slot_index); + + page_dir_slot_set_rec(slot, insert_rec); + page_dir_slot_set_n_owned(slot, NULL, count); + + count = 0; + } + + rec_size = rec_offs_size(offsets); + + ut_ad(heap_top < new_page + UNIV_PAGE_SIZE); + + heap_top += rec_size; + + page_cur_insert_rec_write_log(insert_rec, rec_size, prev_rec, + index, mtr); + prev_rec = insert_rec; + rec = page_rec_get_next(rec); + } while (!page_rec_is_supremum(rec)); + + if ((slot_index > 0) && (count + 1 + + (PAGE_DIR_SLOT_MAX_N_OWNED + 1) / 2 + <= PAGE_DIR_SLOT_MAX_N_OWNED)) { + /* We can merge the two last dir slots. This operation is + here to make this function imitate exactly the equivalent + task made using page_cur_insert_rec, which we use in database + recovery to reproduce the task performed by this function. + To be able to check the correctness of recovery, it is good + that it imitates exactly. */ + + count += (PAGE_DIR_SLOT_MAX_N_OWNED + 1) / 2; + + page_dir_slot_set_n_owned(slot, NULL, 0); + + slot_index--; + } + + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } + + log_data_len = dyn_array_get_data_size(&(mtr->log)) - log_data_len; + + ut_a(log_data_len < 100 * UNIV_PAGE_SIZE); + + if (UNIV_LIKELY(log_ptr != NULL)) { + mach_write_to_4(log_ptr, log_data_len); + } + + if (page_is_comp(new_page)) { + rec_set_next_offs_new(insert_rec, PAGE_NEW_SUPREMUM); + } else { + rec_set_next_offs_old(insert_rec, PAGE_OLD_SUPREMUM); + } + + slot = page_dir_get_nth_slot(new_page, 1 + slot_index); + + page_dir_slot_set_rec(slot, page_get_supremum_rec(new_page)); + page_dir_slot_set_n_owned(slot, NULL, count + 1); + + page_dir_set_n_slots(new_page, NULL, 2 + slot_index); + page_header_set_ptr(new_page, NULL, PAGE_HEAP_TOP, heap_top); + page_dir_set_n_heap(new_page, NULL, PAGE_HEAP_NO_USER_LOW + n_recs); + page_header_set_field(new_page, NULL, PAGE_N_RECS, n_recs); + + page_header_set_ptr(new_page, NULL, PAGE_LAST_INSERT, NULL); + page_header_set_field(new_page, NULL, PAGE_DIRECTION, + PAGE_NO_DIRECTION); + page_header_set_field(new_page, NULL, PAGE_N_DIRECTION, 0); + + /* Restore the log mode */ + + mtr_set_log_mode(mtr, log_mode); +} + +/*************************************************************** +Writes log record of a record delete on a page. */ +UNIV_INLINE +void +page_cur_delete_rec_write_log( +/*==========================*/ + rec_t* rec, /* in: record to be deleted */ + dict_index_t* index, /* in: record descriptor */ + mtr_t* mtr) /* in: mini-transaction handle */ +{ + byte* log_ptr; + + ut_ad(!!page_rec_is_comp(rec) == dict_table_is_comp(index->table)); + + log_ptr = mlog_open_and_write_index(mtr, rec, index, + page_rec_is_comp(rec) + ? MLOG_COMP_REC_DELETE + : MLOG_REC_DELETE, 2); + + if (!log_ptr) { + /* Logging in mtr is switched off during crash recovery: + in that case mlog_open returns NULL */ + return; + } + + /* Write the cursor rec offset as a 2-byte ulint */ + mach_write_to_2(log_ptr, page_offset(rec)); + + mlog_close(mtr, log_ptr + 2); +} + +/*************************************************************** +Parses log record of a record delete on a page. */ +UNIV_INTERN +byte* +page_cur_parse_delete_rec( +/*======================*/ + /* out: pointer to record end or NULL */ + byte* ptr, /* in: buffer */ + byte* end_ptr,/* in: buffer end */ + buf_block_t* block, /* in: page or NULL */ + dict_index_t* index, /* in: record descriptor */ + mtr_t* mtr) /* in: mtr or NULL */ +{ + ulint offset; + page_cur_t cursor; + + if (end_ptr < ptr + 2) { + + return(NULL); + } + + /* Read the cursor rec offset as a 2-byte ulint */ + offset = mach_read_from_2(ptr); + ptr += 2; + + ut_a(offset <= UNIV_PAGE_SIZE); + + if (block) { + page_t* page = buf_block_get_frame(block); + mem_heap_t* heap = NULL; + ulint offsets_[REC_OFFS_NORMAL_SIZE]; + rec_t* rec = page + offset; + rec_offs_init(offsets_); + + page_cur_position(rec, block, &cursor); + ut_ad(!buf_block_get_page_zip(block) || page_is_comp(page)); + + page_cur_delete_rec(&cursor, index, + rec_get_offsets(rec, index, offsets_, + ULINT_UNDEFINED, &heap), + mtr); + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } + } + + return(ptr); +} + +/*************************************************************** +Deletes a record at the page cursor. The cursor is moved to the next +record after the deleted one. */ +UNIV_INTERN +void +page_cur_delete_rec( +/*================*/ + page_cur_t* cursor, /* in/out: a page cursor */ + dict_index_t* index, /* in: record descriptor */ + const ulint* offsets,/* in: rec_get_offsets(cursor->rec, index) */ + mtr_t* mtr) /* in: mini-transaction handle */ +{ + page_dir_slot_t* cur_dir_slot; + page_dir_slot_t* prev_slot; + page_t* page; + page_zip_des_t* page_zip; + rec_t* current_rec; + rec_t* prev_rec = NULL; + rec_t* next_rec; + ulint cur_slot_no; + ulint cur_n_owned; + rec_t* rec; + + ut_ad(cursor && mtr); + + page = page_cur_get_page(cursor); + page_zip = page_cur_get_page_zip(cursor); + + /* page_zip_validate() will fail here when + btr_cur_pessimistic_delete() invokes btr_set_min_rec_mark(). + Then, both "page_zip" and "page" would have the min-rec-mark + set on the smallest user record, but "page" would additionally + have it set on the smallest-but-one record. Because sloppy + page_zip_validate_low() only ignores min-rec-flag differences + in the smallest user record, it cannot be used here either. */ + + current_rec = cursor->rec; + ut_ad(rec_offs_validate(current_rec, index, offsets)); + ut_ad(!!page_is_comp(page) == dict_table_is_comp(index->table)); + + /* The record must not be the supremum or infimum record. */ + ut_ad(page_rec_is_user_rec(current_rec)); + + /* Save to local variables some data associated with current_rec */ + cur_slot_no = page_dir_find_owner_slot(current_rec); + cur_dir_slot = page_dir_get_nth_slot(page, cur_slot_no); + cur_n_owned = page_dir_slot_get_n_owned(cur_dir_slot); + + /* 0. Write the log record */ + page_cur_delete_rec_write_log(current_rec, index, mtr); + + /* 1. Reset the last insert info in the page header and increment + the modify clock for the frame */ + + page_header_set_ptr(page, page_zip, PAGE_LAST_INSERT, NULL); + + /* The page gets invalid for optimistic searches: increment the + frame modify clock */ + + buf_block_modify_clock_inc(page_cur_get_block(cursor)); + + /* 2. Find the next and the previous record. Note that the cursor is + left at the next record. */ + + ut_ad(cur_slot_no > 0); + prev_slot = page_dir_get_nth_slot(page, cur_slot_no - 1); + + rec = (rec_t*) page_dir_slot_get_rec(prev_slot); + + /* rec now points to the record of the previous directory slot. Look + for the immediate predecessor of current_rec in a loop. */ + + while(current_rec != rec) { + prev_rec = rec; + rec = page_rec_get_next(rec); + } + + page_cur_move_to_next(cursor); + next_rec = cursor->rec; + + /* 3. Remove the record from the linked list of records */ + + page_rec_set_next(prev_rec, next_rec); + + /* 4. If the deleted record is pointed to by a dir slot, update the + record pointer in slot. In the following if-clause we assume that + prev_rec is owned by the same slot, i.e., PAGE_DIR_SLOT_MIN_N_OWNED + >= 2. */ + +#if PAGE_DIR_SLOT_MIN_N_OWNED < 2 +# error "PAGE_DIR_SLOT_MIN_N_OWNED < 2" +#endif + ut_ad(cur_n_owned > 1); + + if (current_rec == page_dir_slot_get_rec(cur_dir_slot)) { + page_dir_slot_set_rec(cur_dir_slot, prev_rec); + } + + /* 5. Update the number of owned records of the slot */ + + page_dir_slot_set_n_owned(cur_dir_slot, page_zip, cur_n_owned - 1); + + /* 6. Free the memory occupied by the record */ + page_mem_free(page, page_zip, current_rec, index, offsets); + + /* 7. Now we have decremented the number of owned records of the slot. + If the number drops below PAGE_DIR_SLOT_MIN_N_OWNED, we balance the + slots. */ + + if (UNIV_UNLIKELY(cur_n_owned <= PAGE_DIR_SLOT_MIN_N_OWNED)) { + page_dir_balance_slot(page, page_zip, cur_slot_no); + } + +#ifdef UNIV_ZIP_DEBUG + ut_a(!page_zip || page_zip_validate(page_zip, page)); +#endif /* UNIV_ZIP_DEBUG */ +} === added file 'storage/xtradb/page/page0page.c' --- a/storage/xtradb/page/page0page.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/page/page0page.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,2568 @@ +/***************************************************************************** + +Copyright (c) 1994, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Index page routines + +Created 2/2/1994 Heikki Tuuri +*******************************************************/ + +#define THIS_MODULE +#include "page0page.h" +#ifdef UNIV_NONINL +#include "page0page.ic" +#endif +#undef THIS_MODULE + +#include "page0cur.h" +#include "page0zip.h" +#include "lock0lock.h" +#include "fut0lst.h" +#include "btr0sea.h" +#include "buf0buf.h" +#include "srv0srv.h" +#include "btr0btr.h" + +/* THE INDEX PAGE + ============== + +The index page consists of a page header which contains the page's +id and other information. On top of it are the the index records +in a heap linked into a one way linear list according to alphabetic order. + +Just below page end is an array of pointers which we call page directory, +to about every sixth record in the list. The pointers are placed in +the directory in the alphabetical order of the records pointed to, +enabling us to make binary search using the array. Each slot n:o I +in the directory points to a record, where a 4-bit field contains a count +of those records which are in the linear list between pointer I and +the pointer I - 1 in the directory, including the record +pointed to by pointer I and not including the record pointed to by I - 1. +We say that the record pointed to by slot I, or that slot I, owns +these records. The count is always kept in the range 4 to 8, with +the exception that it is 1 for the first slot, and 1--8 for the second slot. + +An essentially binary search can be performed in the list of index +records, like we could do if we had pointer to every record in the +page directory. The data structure is, however, more efficient when +we are doing inserts, because most inserts are just pushed on a heap. +Only every 8th insert requires block move in the directory pointer +table, which itself is quite small. A record is deleted from the page +by just taking it off the linear list and updating the number of owned +records-field of the record which owns it, and updating the page directory, +if necessary. A special case is the one when the record owns itself. +Because the overhead of inserts is so small, we may also increase the +page size from the projected default of 8 kB to 64 kB without too +much loss of efficiency in inserts. Bigger page becomes actual +when the disk transfer rate compared to seek and latency time rises. +On the present system, the page size is set so that the page transfer +time (3 ms) is 20 % of the disk random access time (15 ms). + +When the page is split, merged, or becomes full but contains deleted +records, we have to reorganize the page. + +Assuming a page size of 8 kB, a typical index page of a secondary +index contains 300 index entries, and the size of the page directory +is 50 x 4 bytes = 200 bytes. */ + +/******************************************************************* +Looks for the directory slot which owns the given record. */ +UNIV_INTERN +ulint +page_dir_find_owner_slot( +/*=====================*/ + /* out: the directory slot number */ + const rec_t* rec) /* in: the physical record */ +{ + const page_t* page; + register uint16 rec_offs_bytes; + register const page_dir_slot_t* slot; + register const page_dir_slot_t* first_slot; + register const rec_t* r = rec; + + ut_ad(page_rec_check(rec)); + + page = page_align(rec); + first_slot = page_dir_get_nth_slot(page, 0); + slot = page_dir_get_nth_slot(page, page_dir_get_n_slots(page) - 1); + + if (page_is_comp(page)) { + while (rec_get_n_owned_new(r) == 0) { + r = rec_get_next_ptr_const(r, TRUE); + ut_ad(r >= page + PAGE_NEW_SUPREMUM); + ut_ad(r < page + (UNIV_PAGE_SIZE - PAGE_DIR)); + } + } else { + while (rec_get_n_owned_old(r) == 0) { + r = rec_get_next_ptr_const(r, FALSE); + ut_ad(r >= page + PAGE_OLD_SUPREMUM); + ut_ad(r < page + (UNIV_PAGE_SIZE - PAGE_DIR)); + } + } + + rec_offs_bytes = mach_encode_2(r - page); + + while (UNIV_LIKELY(*(uint16*) slot != rec_offs_bytes)) { + + if (UNIV_UNLIKELY(slot == first_slot)) { + fprintf(stderr, + "InnoDB: Probable data corruption on" + " page %lu\n" + "InnoDB: Original record ", + (ulong) page_get_page_no(page)); + + if (page_is_comp(page)) { + fputs("(compact record)", stderr); + } else { + rec_print_old(stderr, rec); + } + + fputs("\n" + "InnoDB: on that page.\n" + "InnoDB: Cannot find the dir slot for record ", + stderr); + if (page_is_comp(page)) { + fputs("(compact record)", stderr); + } else { + rec_print_old(stderr, page + + mach_decode_2(rec_offs_bytes)); + } + fputs("\n" + "InnoDB: on that page!\n", stderr); + + buf_page_print(page, 0); + + ut_error; + } + + slot += PAGE_DIR_SLOT_SIZE; + } + + return(((ulint) (first_slot - slot)) / PAGE_DIR_SLOT_SIZE); +} + +/****************************************************************** +Used to check the consistency of a directory slot. */ +static +ibool +page_dir_slot_check( +/*================*/ + /* out: TRUE if succeed */ + page_dir_slot_t* slot) /* in: slot */ +{ + page_t* page; + ulint n_slots; + ulint n_owned; + + ut_a(slot); + + page = page_align(slot); + + n_slots = page_dir_get_n_slots(page); + + ut_a(slot <= page_dir_get_nth_slot(page, 0)); + ut_a(slot >= page_dir_get_nth_slot(page, n_slots - 1)); + + ut_a(page_rec_check(page_dir_slot_get_rec(slot))); + + if (page_is_comp(page)) { + n_owned = rec_get_n_owned_new(page_dir_slot_get_rec(slot)); + } else { + n_owned = rec_get_n_owned_old(page_dir_slot_get_rec(slot)); + } + + if (slot == page_dir_get_nth_slot(page, 0)) { + ut_a(n_owned == 1); + } else if (slot == page_dir_get_nth_slot(page, n_slots - 1)) { + ut_a(n_owned >= 1); + ut_a(n_owned <= PAGE_DIR_SLOT_MAX_N_OWNED); + } else { + ut_a(n_owned >= PAGE_DIR_SLOT_MIN_N_OWNED); + ut_a(n_owned <= PAGE_DIR_SLOT_MAX_N_OWNED); + } + + return(TRUE); +} + +/***************************************************************** +Sets the max trx id field value. */ +UNIV_INTERN +void +page_set_max_trx_id( +/*================*/ + buf_block_t* block, /* in/out: page */ + page_zip_des_t* page_zip,/* in/out: compressed page, or NULL */ + dulint trx_id) /* in: transaction id */ +{ + const ibool is_hashed = block->is_hashed; + page_t* page = buf_block_get_frame(block); + + if (is_hashed) { + rw_lock_x_lock(&btr_search_latch); + } + + /* It is not necessary to write this change to the redo log, as + during a database recovery we assume that the max trx id of every + page is the maximum trx id assigned before the crash. */ + + mach_write_to_8(page + (PAGE_HEADER + PAGE_MAX_TRX_ID), trx_id); + if (UNIV_LIKELY_NULL(page_zip)) { + page_zip_write_header(page_zip, + page + (PAGE_HEADER + PAGE_MAX_TRX_ID), + 8, NULL); + } + + if (is_hashed) { + rw_lock_x_unlock(&btr_search_latch); + } +} + +/**************************************************************** +Allocates a block of memory from the heap of an index page. */ +UNIV_INTERN +byte* +page_mem_alloc_heap( +/*================*/ + /* out: pointer to start of allocated + buffer, or NULL if allocation fails */ + page_t* page, /* in/out: index page */ + page_zip_des_t* page_zip,/* in/out: compressed page with enough + space available for inserting the record, + or NULL */ + ulint need, /* in: total number of bytes needed */ + ulint* heap_no)/* out: this contains the heap number + of the allocated record + if allocation succeeds */ +{ + byte* block; + ulint avl_space; + + ut_ad(page && heap_no); + + avl_space = page_get_max_insert_size(page, 1); + + if (avl_space >= need) { + block = page_header_get_ptr(page, PAGE_HEAP_TOP); + + page_header_set_ptr(page, page_zip, PAGE_HEAP_TOP, + block + need); + *heap_no = page_dir_get_n_heap(page); + + page_dir_set_n_heap(page, page_zip, 1 + *heap_no); + + return(block); + } + + return(NULL); +} + +/************************************************************** +Writes a log record of page creation. */ +UNIV_INLINE +void +page_create_write_log( +/*==================*/ + buf_frame_t* frame, /* in: a buffer frame where the page is + created */ + mtr_t* mtr, /* in: mini-transaction handle */ + ibool comp) /* in: TRUE=compact page format */ +{ + mlog_write_initial_log_record(frame, comp + ? MLOG_COMP_PAGE_CREATE + : MLOG_PAGE_CREATE, mtr); +} + +/*************************************************************** +Parses a redo log record of creating a page. */ +UNIV_INTERN +byte* +page_parse_create( +/*==============*/ + /* out: end of log record or NULL */ + byte* ptr, /* in: buffer */ + byte* end_ptr __attribute__((unused)), /* in: buffer end */ + ulint comp, /* in: nonzero=compact page format */ + buf_block_t* block, /* in: block or NULL */ + mtr_t* mtr) /* in: mtr or NULL */ +{ + ut_ad(ptr && end_ptr); + + /* The record is empty, except for the record initial part */ + + if (block) { + page_create(block, mtr, comp); + } + + return(ptr); +} + +/************************************************************** +The index page creation function. */ +static +page_t* +page_create_low( +/*============*/ + /* out: pointer to the page */ + buf_block_t* block, /* in: a buffer block where the + page is created */ + ulint comp) /* in: nonzero=compact page format */ +{ + page_dir_slot_t* slot; + mem_heap_t* heap; + dtuple_t* tuple; + dfield_t* field; + byte* heap_top; + rec_t* infimum_rec; + rec_t* supremum_rec; + page_t* page; + dict_index_t* index; + ulint* offsets; + + ut_ad(block); +#if PAGE_BTR_IBUF_FREE_LIST + FLST_BASE_NODE_SIZE > PAGE_DATA +# error "PAGE_BTR_IBUF_FREE_LIST + FLST_BASE_NODE_SIZE > PAGE_DATA" +#endif +#if PAGE_BTR_IBUF_FREE_LIST_NODE + FLST_NODE_SIZE > PAGE_DATA +# error "PAGE_BTR_IBUF_FREE_LIST_NODE + FLST_NODE_SIZE > PAGE_DATA" +#endif + + /* The infimum and supremum records use a dummy index. */ + if (UNIV_LIKELY(comp)) { + index = srv_sys->dummy_ind2; + } else { + index = srv_sys->dummy_ind1; + } + + /* 1. INCREMENT MODIFY CLOCK */ + buf_block_modify_clock_inc(block); + + page = buf_block_get_frame(block); + + fil_page_set_type(page, FIL_PAGE_INDEX); + + heap = mem_heap_create(200); + + /* 3. CREATE THE INFIMUM AND SUPREMUM RECORDS */ + + /* Create first a data tuple for infimum record */ + tuple = dtuple_create(heap, 1); + dtuple_set_info_bits(tuple, REC_STATUS_INFIMUM); + field = dtuple_get_nth_field(tuple, 0); + + dfield_set_data(field, "infimum", 8); + dtype_set(dfield_get_type(field), + DATA_VARCHAR, DATA_ENGLISH | DATA_NOT_NULL, 8); + /* Set the corresponding physical record to its place in the page + record heap */ + + heap_top = page + PAGE_DATA; + + infimum_rec = rec_convert_dtuple_to_rec(heap_top, index, tuple, 0); + + if (UNIV_LIKELY(comp)) { + ut_a(infimum_rec == page + PAGE_NEW_INFIMUM); + + rec_set_n_owned_new(infimum_rec, NULL, 1); + rec_set_heap_no_new(infimum_rec, 0); + } else { + ut_a(infimum_rec == page + PAGE_OLD_INFIMUM); + + rec_set_n_owned_old(infimum_rec, 1); + rec_set_heap_no_old(infimum_rec, 0); + } + + offsets = rec_get_offsets(infimum_rec, index, NULL, + ULINT_UNDEFINED, &heap); + + heap_top = rec_get_end(infimum_rec, offsets); + + /* Create then a tuple for supremum */ + + tuple = dtuple_create(heap, 1); + dtuple_set_info_bits(tuple, REC_STATUS_SUPREMUM); + field = dtuple_get_nth_field(tuple, 0); + + dfield_set_data(field, "supremum", comp ? 8 : 9); + dtype_set(dfield_get_type(field), + DATA_VARCHAR, DATA_ENGLISH | DATA_NOT_NULL, comp ? 8 : 9); + + supremum_rec = rec_convert_dtuple_to_rec(heap_top, index, tuple, 0); + + if (UNIV_LIKELY(comp)) { + ut_a(supremum_rec == page + PAGE_NEW_SUPREMUM); + + rec_set_n_owned_new(supremum_rec, NULL, 1); + rec_set_heap_no_new(supremum_rec, 1); + } else { + ut_a(supremum_rec == page + PAGE_OLD_SUPREMUM); + + rec_set_n_owned_old(supremum_rec, 1); + rec_set_heap_no_old(supremum_rec, 1); + } + + offsets = rec_get_offsets(supremum_rec, index, offsets, + ULINT_UNDEFINED, &heap); + heap_top = rec_get_end(supremum_rec, offsets); + + ut_ad(heap_top == page + + (comp ? PAGE_NEW_SUPREMUM_END : PAGE_OLD_SUPREMUM_END)); + + mem_heap_free(heap); + + /* 4. INITIALIZE THE PAGE */ + + page_header_set_field(page, NULL, PAGE_N_DIR_SLOTS, 2); + page_header_set_ptr(page, NULL, PAGE_HEAP_TOP, heap_top); + page_header_set_field(page, NULL, PAGE_N_HEAP, comp + ? 0x8000 | PAGE_HEAP_NO_USER_LOW + : PAGE_HEAP_NO_USER_LOW); + page_header_set_ptr(page, NULL, PAGE_FREE, NULL); + page_header_set_field(page, NULL, PAGE_GARBAGE, 0); + page_header_set_ptr(page, NULL, PAGE_LAST_INSERT, NULL); + page_header_set_field(page, NULL, PAGE_DIRECTION, PAGE_NO_DIRECTION); + page_header_set_field(page, NULL, PAGE_N_DIRECTION, 0); + page_header_set_field(page, NULL, PAGE_N_RECS, 0); + page_set_max_trx_id(block, NULL, ut_dulint_zero); + memset(heap_top, 0, UNIV_PAGE_SIZE - PAGE_EMPTY_DIR_START + - page_offset(heap_top)); + + /* 5. SET POINTERS IN RECORDS AND DIR SLOTS */ + + /* Set the slots to point to infimum and supremum. */ + + slot = page_dir_get_nth_slot(page, 0); + page_dir_slot_set_rec(slot, infimum_rec); + + slot = page_dir_get_nth_slot(page, 1); + page_dir_slot_set_rec(slot, supremum_rec); + + /* Set the next pointers in infimum and supremum */ + + if (UNIV_LIKELY(comp)) { + rec_set_next_offs_new(infimum_rec, PAGE_NEW_SUPREMUM); + rec_set_next_offs_new(supremum_rec, 0); + } else { + rec_set_next_offs_old(infimum_rec, PAGE_OLD_SUPREMUM); + rec_set_next_offs_old(supremum_rec, 0); + } + + return(page); +} + +/************************************************************** +Create an uncompressed B-tree index page. */ +UNIV_INTERN +page_t* +page_create( +/*========*/ + /* out: pointer to the page */ + buf_block_t* block, /* in: a buffer block where the + page is created */ + mtr_t* mtr, /* in: mini-transaction handle */ + ulint comp) /* in: nonzero=compact page format */ +{ + page_create_write_log(buf_block_get_frame(block), mtr, comp); + return(page_create_low(block, comp)); +} + +/************************************************************** +Create a compressed B-tree index page. */ +UNIV_INTERN +page_t* +page_create_zip( +/*============*/ + /* out: pointer to the page */ + buf_block_t* block, /* in/out: a buffer frame where the + page is created */ + dict_index_t* index, /* in: the index of the page */ + ulint level, /* in: the B-tree level of the page */ + mtr_t* mtr) /* in: mini-transaction handle */ +{ + page_t* page; + page_zip_des_t* page_zip = buf_block_get_page_zip(block); + + ut_ad(block); + ut_ad(page_zip); + ut_ad(index); + ut_ad(dict_table_is_comp(index->table)); + + page = page_create_low(block, TRUE); + mach_write_to_2(page + PAGE_HEADER + PAGE_LEVEL, level); + + if (UNIV_UNLIKELY(!page_zip_compress(page_zip, page, index, mtr))) { + /* The compression of a newly created page + should always succeed. */ + ut_error; + } + + return(page); +} + +/***************************************************************** +Differs from page_copy_rec_list_end, because this function does not +touch the lock table and max trx id on page or compress the page. */ +UNIV_INTERN +void +page_copy_rec_list_end_no_locks( +/*============================*/ + buf_block_t* new_block, /* in: index page to copy to */ + buf_block_t* block, /* in: index page of rec */ + rec_t* rec, /* in: record on page */ + dict_index_t* index, /* in: record descriptor */ + mtr_t* mtr) /* in: mtr */ +{ + page_t* new_page = buf_block_get_frame(new_block); + page_cur_t cur1; + rec_t* cur2; + mem_heap_t* heap = NULL; + ulint offsets_[REC_OFFS_NORMAL_SIZE]; + ulint* offsets = offsets_; + rec_offs_init(offsets_); + + page_cur_position(rec, block, &cur1); + + if (page_cur_is_before_first(&cur1)) { + + page_cur_move_to_next(&cur1); + } + + ut_a((ibool)!!page_is_comp(new_page) + == dict_table_is_comp(index->table)); + ut_a(page_is_comp(new_page) == page_rec_is_comp(rec)); + ut_a(mach_read_from_2(new_page + UNIV_PAGE_SIZE - 10) == (ulint) + (page_is_comp(new_page) ? PAGE_NEW_INFIMUM : PAGE_OLD_INFIMUM)); + + cur2 = page_get_infimum_rec(buf_block_get_frame(new_block)); + + /* Copy records from the original page to the new page */ + + while (!page_cur_is_after_last(&cur1)) { + rec_t* cur1_rec = page_cur_get_rec(&cur1); + rec_t* ins_rec; + offsets = rec_get_offsets(cur1_rec, index, offsets, + ULINT_UNDEFINED, &heap); + ins_rec = page_cur_insert_rec_low(cur2, index, + cur1_rec, offsets, mtr); + if (UNIV_UNLIKELY(!ins_rec)) { + /* Track an assertion failure reported on the mailing + list on June 18th, 2003 */ + + buf_page_print(new_page, 0); + buf_page_print(page_align(rec), 0); + ut_print_timestamp(stderr); + + fprintf(stderr, + "InnoDB: rec offset %lu, cur1 offset %lu," + " cur2 offset %lu\n", + (ulong) page_offset(rec), + (ulong) page_offset(page_cur_get_rec(&cur1)), + (ulong) page_offset(cur2)); + ut_error; + } + + page_cur_move_to_next(&cur1); + cur2 = ins_rec; + } + + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } +} + +/***************************************************************** +Copies records from page to new_page, from a given record onward, +including that record. Infimum and supremum records are not copied. +The records are copied to the start of the record list on new_page. */ +UNIV_INTERN +rec_t* +page_copy_rec_list_end( +/*===================*/ + /* out: pointer to the original + successor of the infimum record + on new_page, or NULL on zip overflow + (new_block will be decompressed) */ + buf_block_t* new_block, /* in/out: index page to copy to */ + buf_block_t* block, /* in: index page containing rec */ + rec_t* rec, /* in: record on page */ + dict_index_t* index, /* in: record descriptor */ + mtr_t* mtr) /* in: mtr */ +{ + page_t* new_page = buf_block_get_frame(new_block); + page_zip_des_t* new_page_zip = buf_block_get_page_zip(new_block); + page_t* page = page_align(rec); + rec_t* ret = page_rec_get_next( + page_get_infimum_rec(new_page)); + ulint log_mode = 0; /* remove warning */ + +#ifdef UNIV_ZIP_DEBUG + if (new_page_zip) { + page_zip_des_t* page_zip = buf_block_get_page_zip(block); + ut_a(page_zip); + + /* Strict page_zip_validate() may fail here. + Furthermore, btr_compress() may set FIL_PAGE_PREV to + FIL_NULL on new_page while leaving it intact on + new_page_zip. So, we cannot validate new_page_zip. */ + ut_a(page_zip_validate_low(page_zip, page, TRUE)); + } +#endif /* UNIV_ZIP_DEBUG */ + ut_ad(buf_block_get_frame(block) == page); + ut_ad(page_is_leaf(page) == page_is_leaf(new_page)); + ut_ad(page_is_comp(page) == page_is_comp(new_page)); + /* Here, "ret" may be pointing to a user record or the + predefined supremum record. */ + + if (UNIV_LIKELY_NULL(new_page_zip)) { + log_mode = mtr_set_log_mode(mtr, MTR_LOG_NONE); + } + + if (page_dir_get_n_heap(new_page) == PAGE_HEAP_NO_USER_LOW) { + page_copy_rec_list_end_to_created_page(new_page, rec, + index, mtr); + } else { + page_copy_rec_list_end_no_locks(new_block, block, rec, + index, mtr); + } + + if (UNIV_LIKELY_NULL(new_page_zip)) { + mtr_set_log_mode(mtr, log_mode); + + if (UNIV_UNLIKELY + (!page_zip_compress(new_page_zip, new_page, index, mtr))) { + /* Before trying to reorganize the page, + store the number of preceding records on the page. */ + ulint ret_pos + = page_rec_get_n_recs_before(ret); + /* Before copying, "ret" was the successor of + the predefined infimum record. It must still + have at least one predecessor (the predefined + infimum record, or a freshly copied record + that is smaller than "ret"). */ + ut_a(ret_pos > 0); + + if (UNIV_UNLIKELY + (!page_zip_reorganize(new_block, index, mtr))) { + + if (UNIV_UNLIKELY + (!page_zip_decompress(new_page_zip, + new_page))) { + ut_error; + } + ut_ad(page_validate(new_page, index)); + return(NULL); + } else { + /* The page was reorganized: + Seek to ret_pos. */ + ret = new_page + PAGE_NEW_INFIMUM; + + do { + ret = rec_get_next_ptr(ret, TRUE); + } while (--ret_pos); + } + } + } + + /* Update the lock table, MAX_TRX_ID, and possible hash index */ + + lock_move_rec_list_end(new_block, block, rec); + + page_update_max_trx_id(new_block, new_page_zip, + page_get_max_trx_id(page)); + + btr_search_move_or_delete_hash_entries(new_block, block, index); + + return(ret); +} + +/***************************************************************** +Copies records from page to new_page, up to the given record, +NOT including that record. Infimum and supremum records are not copied. +The records are copied to the end of the record list on new_page. */ +UNIV_INTERN +rec_t* +page_copy_rec_list_start( +/*=====================*/ + /* out: pointer to the original + predecessor of the supremum record + on new_page, or NULL on zip overflow + (new_block will be decompressed) */ + buf_block_t* new_block, /* in/out: index page to copy to */ + buf_block_t* block, /* in: index page containing rec */ + rec_t* rec, /* in: record on page */ + dict_index_t* index, /* in: record descriptor */ + mtr_t* mtr) /* in: mtr */ +{ + page_t* new_page = buf_block_get_frame(new_block); + page_zip_des_t* new_page_zip = buf_block_get_page_zip(new_block); + page_cur_t cur1; + rec_t* cur2; + ulint log_mode = 0 /* remove warning */; + mem_heap_t* heap = NULL; + rec_t* ret + = page_rec_get_prev(page_get_supremum_rec(new_page)); + ulint offsets_[REC_OFFS_NORMAL_SIZE]; + ulint* offsets = offsets_; + rec_offs_init(offsets_); + + /* Here, "ret" may be pointing to a user record or the + predefined infimum record. */ + + if (page_rec_is_infimum(rec)) { + + return(ret); + } + + if (UNIV_LIKELY_NULL(new_page_zip)) { + log_mode = mtr_set_log_mode(mtr, MTR_LOG_NONE); + } + + page_cur_set_before_first(block, &cur1); + page_cur_move_to_next(&cur1); + + cur2 = ret; + + /* Copy records from the original page to the new page */ + + while (page_cur_get_rec(&cur1) != rec) { + rec_t* cur1_rec = page_cur_get_rec(&cur1); + offsets = rec_get_offsets(cur1_rec, index, offsets, + ULINT_UNDEFINED, &heap); + cur2 = page_cur_insert_rec_low(cur2, index, + cur1_rec, offsets, mtr); + ut_a(cur2); + + page_cur_move_to_next(&cur1); + } + + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } + + if (UNIV_LIKELY_NULL(new_page_zip)) { + mtr_set_log_mode(mtr, log_mode); + + if (UNIV_UNLIKELY + (!page_zip_compress(new_page_zip, new_page, index, mtr))) { + /* Before trying to reorganize the page, + store the number of preceding records on the page. */ + ulint ret_pos + = page_rec_get_n_recs_before(ret); + /* Before copying, "ret" was the predecessor + of the predefined supremum record. If it was + the predefined infimum record, then it would + still be the infimum. Thus, the assertion + ut_a(ret_pos > 0) would fail here. */ + + if (UNIV_UNLIKELY + (!page_zip_reorganize(new_block, index, mtr))) { + + if (UNIV_UNLIKELY + (!page_zip_decompress(new_page_zip, + new_page))) { + ut_error; + } + ut_ad(page_validate(new_page, index)); + return(NULL); + } else { + /* The page was reorganized: + Seek to ret_pos. */ + ret = new_page + PAGE_NEW_INFIMUM; + + do { + ret = rec_get_next_ptr(ret, TRUE); + } while (--ret_pos); + } + } + } + + /* Update MAX_TRX_ID, the lock table, and possible hash index */ + + page_update_max_trx_id(new_block, new_page_zip, + page_get_max_trx_id(page_align(rec))); + + lock_move_rec_list_start(new_block, block, rec, ret); + + btr_search_move_or_delete_hash_entries(new_block, block, index); + + return(ret); +} + +/************************************************************** +Writes a log record of a record list end or start deletion. */ +UNIV_INLINE +void +page_delete_rec_list_write_log( +/*===========================*/ + rec_t* rec, /* in: record on page */ + dict_index_t* index, /* in: record descriptor */ + byte type, /* in: operation type: + MLOG_LIST_END_DELETE, ... */ + mtr_t* mtr) /* in: mtr */ +{ + byte* log_ptr; + ut_ad(type == MLOG_LIST_END_DELETE + || type == MLOG_LIST_START_DELETE + || type == MLOG_COMP_LIST_END_DELETE + || type == MLOG_COMP_LIST_START_DELETE); + + log_ptr = mlog_open_and_write_index(mtr, rec, index, type, 2); + if (log_ptr) { + /* Write the parameter as a 2-byte ulint */ + mach_write_to_2(log_ptr, page_offset(rec)); + mlog_close(mtr, log_ptr + 2); + } +} + +/************************************************************** +Parses a log record of a record list end or start deletion. */ +UNIV_INTERN +byte* +page_parse_delete_rec_list( +/*=======================*/ + /* out: end of log record or NULL */ + byte type, /* in: MLOG_LIST_END_DELETE, + MLOG_LIST_START_DELETE, + MLOG_COMP_LIST_END_DELETE or + MLOG_COMP_LIST_START_DELETE */ + byte* ptr, /* in: buffer */ + byte* end_ptr,/* in: buffer end */ + buf_block_t* block, /* in/out: buffer block or NULL */ + dict_index_t* index, /* in: record descriptor */ + mtr_t* mtr) /* in: mtr or NULL */ +{ + page_t* page; + ulint offset; + + ut_ad(type == MLOG_LIST_END_DELETE + || type == MLOG_LIST_START_DELETE + || type == MLOG_COMP_LIST_END_DELETE + || type == MLOG_COMP_LIST_START_DELETE); + + /* Read the record offset as a 2-byte ulint */ + + if (end_ptr < ptr + 2) { + + return(NULL); + } + + offset = mach_read_from_2(ptr); + ptr += 2; + + if (!block) { + + return(ptr); + } + + page = buf_block_get_frame(block); + + ut_ad(!!page_is_comp(page) == dict_table_is_comp(index->table)); + + if (type == MLOG_LIST_END_DELETE + || type == MLOG_COMP_LIST_END_DELETE) { + page_delete_rec_list_end(page + offset, block, index, + ULINT_UNDEFINED, ULINT_UNDEFINED, + mtr); + } else { + page_delete_rec_list_start(page + offset, block, index, mtr); + } + + return(ptr); +} + +/***************************************************************** +Deletes records from a page from a given record onward, including that record. +The infimum and supremum records are not deleted. */ +UNIV_INTERN +void +page_delete_rec_list_end( +/*=====================*/ + rec_t* rec, /* in: pointer to record on page */ + buf_block_t* block, /* in: buffer block of the page */ + dict_index_t* index, /* in: record descriptor */ + ulint n_recs, /* in: number of records to delete, + or ULINT_UNDEFINED if not known */ + ulint size, /* in: the sum of the sizes of the + records in the end of the chain to + delete, or ULINT_UNDEFINED if not known */ + mtr_t* mtr) /* in: mtr */ +{ + page_dir_slot_t*slot; + ulint slot_index; + rec_t* last_rec; + rec_t* prev_rec; + ulint n_owned; + page_zip_des_t* page_zip = buf_block_get_page_zip(block); + page_t* page = page_align(rec); + mem_heap_t* heap = NULL; + ulint offsets_[REC_OFFS_NORMAL_SIZE]; + ulint* offsets = offsets_; + rec_offs_init(offsets_); + + ut_ad(size == ULINT_UNDEFINED || size < UNIV_PAGE_SIZE); + ut_ad(!page_zip || page_rec_is_comp(rec)); +#ifdef UNIV_ZIP_DEBUG + ut_a(!page_zip || page_zip_validate(page_zip, page)); +#endif /* UNIV_ZIP_DEBUG */ + + if (page_rec_is_infimum(rec)) { + rec = page_rec_get_next(rec); + } + + if (page_rec_is_supremum(rec)) { + + return; + } + + /* Reset the last insert info in the page header and increment + the modify clock for the frame */ + + page_header_set_ptr(page, page_zip, PAGE_LAST_INSERT, NULL); + + /* The page gets invalid for optimistic searches: increment the + frame modify clock */ + + buf_block_modify_clock_inc(block); + + page_delete_rec_list_write_log(rec, index, page_is_comp(page) + ? MLOG_COMP_LIST_END_DELETE + : MLOG_LIST_END_DELETE, mtr); + + if (UNIV_LIKELY_NULL(page_zip)) { + ulint log_mode; + + ut_a(page_is_comp(page)); + /* Individual deletes are not logged */ + + log_mode = mtr_set_log_mode(mtr, MTR_LOG_NONE); + + do { + page_cur_t cur; + page_cur_position(rec, block, &cur); + + offsets = rec_get_offsets(rec, index, offsets, + ULINT_UNDEFINED, &heap); + rec = rec_get_next_ptr(rec, TRUE); +#ifdef UNIV_ZIP_DEBUG + ut_a(page_zip_validate(page_zip, page)); +#endif /* UNIV_ZIP_DEBUG */ + page_cur_delete_rec(&cur, index, offsets, mtr); + } while (page_offset(rec) != PAGE_NEW_SUPREMUM); + + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } + + /* Restore log mode */ + + mtr_set_log_mode(mtr, log_mode); + return; + } + + prev_rec = page_rec_get_prev(rec); + + last_rec = page_rec_get_prev(page_get_supremum_rec(page)); + + if ((size == ULINT_UNDEFINED) || (n_recs == ULINT_UNDEFINED)) { + rec_t* rec2 = rec; + /* Calculate the sum of sizes and the number of records */ + size = 0; + n_recs = 0; + + do { + ulint s; + offsets = rec_get_offsets(rec2, index, offsets, + ULINT_UNDEFINED, &heap); + s = rec_offs_size(offsets); + ut_ad(rec2 - page + s - rec_offs_extra_size(offsets) + < UNIV_PAGE_SIZE); + ut_ad(size + s < UNIV_PAGE_SIZE); + size += s; + n_recs++; + + rec2 = page_rec_get_next(rec2); + } while (!page_rec_is_supremum(rec2)); + + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } + } + + ut_ad(size < UNIV_PAGE_SIZE); + + /* Update the page directory; there is no need to balance the number + of the records owned by the supremum record, as it is allowed to be + less than PAGE_DIR_SLOT_MIN_N_OWNED */ + + if (page_is_comp(page)) { + rec_t* rec2 = rec; + ulint count = 0; + + while (rec_get_n_owned_new(rec2) == 0) { + count++; + + rec2 = rec_get_next_ptr(rec2, TRUE); + } + + ut_ad(rec_get_n_owned_new(rec2) > count); + + n_owned = rec_get_n_owned_new(rec2) - count; + slot_index = page_dir_find_owner_slot(rec2); + slot = page_dir_get_nth_slot(page, slot_index); + } else { + rec_t* rec2 = rec; + ulint count = 0; + + while (rec_get_n_owned_old(rec2) == 0) { + count++; + + rec2 = rec_get_next_ptr(rec2, FALSE); + } + + ut_ad(rec_get_n_owned_old(rec2) > count); + + n_owned = rec_get_n_owned_old(rec2) - count; + slot_index = page_dir_find_owner_slot(rec2); + slot = page_dir_get_nth_slot(page, slot_index); + } + + page_dir_slot_set_rec(slot, page_get_supremum_rec(page)); + page_dir_slot_set_n_owned(slot, NULL, n_owned); + + page_dir_set_n_slots(page, NULL, slot_index + 1); + + /* Remove the record chain segment from the record chain */ + page_rec_set_next(prev_rec, page_get_supremum_rec(page)); + + /* Catenate the deleted chain segment to the page free list */ + + page_rec_set_next(last_rec, page_header_get_ptr(page, PAGE_FREE)); + page_header_set_ptr(page, NULL, PAGE_FREE, rec); + + page_header_set_field(page, NULL, PAGE_GARBAGE, size + + page_header_get_field(page, PAGE_GARBAGE)); + + page_header_set_field(page, NULL, PAGE_N_RECS, + (ulint)(page_get_n_recs(page) - n_recs)); +} + +/***************************************************************** +Deletes records from page, up to the given record, NOT including +that record. Infimum and supremum records are not deleted. */ +UNIV_INTERN +void +page_delete_rec_list_start( +/*=======================*/ + rec_t* rec, /* in: record on page */ + buf_block_t* block, /* in: buffer block of the page */ + dict_index_t* index, /* in: record descriptor */ + mtr_t* mtr) /* in: mtr */ +{ + page_cur_t cur1; + ulint log_mode; + ulint offsets_[REC_OFFS_NORMAL_SIZE]; + ulint* offsets = offsets_; + mem_heap_t* heap = NULL; + byte type; + + rec_offs_init(offsets_); + + ut_ad((ibool) !!page_rec_is_comp(rec) + == dict_table_is_comp(index->table)); +#ifdef UNIV_ZIP_DEBUG + { + page_zip_des_t* page_zip= buf_block_get_page_zip(block); + page_t* page = buf_block_get_frame(block); + + /* page_zip_validate() would detect a min_rec_mark mismatch + in btr_page_split_and_insert() + between btr_attach_half_pages() and insert_page = ... + when btr_page_get_split_rec_to_left() holds + (direction == FSP_DOWN). */ + ut_a(!page_zip || page_zip_validate_low(page_zip, page, TRUE)); + } +#endif /* UNIV_ZIP_DEBUG */ + + if (page_rec_is_infimum(rec)) { + + return; + } + + if (page_rec_is_comp(rec)) { + type = MLOG_COMP_LIST_START_DELETE; + } else { + type = MLOG_LIST_START_DELETE; + } + + page_delete_rec_list_write_log(rec, index, type, mtr); + + page_cur_set_before_first(block, &cur1); + page_cur_move_to_next(&cur1); + + /* Individual deletes are not logged */ + + log_mode = mtr_set_log_mode(mtr, MTR_LOG_NONE); + + while (page_cur_get_rec(&cur1) != rec) { + offsets = rec_get_offsets(page_cur_get_rec(&cur1), index, + offsets, ULINT_UNDEFINED, &heap); + page_cur_delete_rec(&cur1, index, offsets, mtr); + } + + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } + + /* Restore log mode */ + + mtr_set_log_mode(mtr, log_mode); +} + +/***************************************************************** +Moves record list end to another page. Moved records include +split_rec. */ +UNIV_INTERN +ibool +page_move_rec_list_end( +/*===================*/ + /* out: TRUE on success; FALSE on + compression failure + (new_block will be decompressed) */ + buf_block_t* new_block, /* in/out: index page where to move */ + buf_block_t* block, /* in: index page from where to move */ + rec_t* split_rec, /* in: first record to move */ + dict_index_t* index, /* in: record descriptor */ + mtr_t* mtr) /* in: mtr */ +{ + page_t* new_page = buf_block_get_frame(new_block); + ulint old_data_size; + ulint new_data_size; + ulint old_n_recs; + ulint new_n_recs; + + old_data_size = page_get_data_size(new_page); + old_n_recs = page_get_n_recs(new_page); +#ifdef UNIV_ZIP_DEBUG + { + page_zip_des_t* new_page_zip + = buf_block_get_page_zip(new_block); + page_zip_des_t* page_zip + = buf_block_get_page_zip(block); + ut_a(!new_page_zip == !page_zip); + ut_a(!new_page_zip + || page_zip_validate(new_page_zip, new_page)); + ut_a(!page_zip + || page_zip_validate(page_zip, page_align(split_rec))); + } +#endif /* UNIV_ZIP_DEBUG */ + + if (UNIV_UNLIKELY(!page_copy_rec_list_end(new_block, block, + split_rec, index, mtr))) { + return(FALSE); + } + + new_data_size = page_get_data_size(new_page); + new_n_recs = page_get_n_recs(new_page); + + ut_ad(new_data_size >= old_data_size); + + page_delete_rec_list_end(split_rec, block, index, + new_n_recs - old_n_recs, + new_data_size - old_data_size, mtr); + + return(TRUE); +} + +/***************************************************************** +Moves record list start to another page. Moved records do not include +split_rec. */ +UNIV_INTERN +ibool +page_move_rec_list_start( +/*=====================*/ + /* out: TRUE on success; FALSE on + compression failure */ + buf_block_t* new_block, /* in/out: index page where to move */ + buf_block_t* block, /* in/out: page containing split_rec */ + rec_t* split_rec, /* in: first record not to move */ + dict_index_t* index, /* in: record descriptor */ + mtr_t* mtr) /* in: mtr */ +{ + if (UNIV_UNLIKELY(!page_copy_rec_list_start(new_block, block, + split_rec, index, mtr))) { + return(FALSE); + } + + page_delete_rec_list_start(split_rec, block, index, mtr); + + return(TRUE); +} + +/*************************************************************************** +This is a low-level operation which is used in a database index creation +to update the page number of a created B-tree to a data dictionary record. */ +UNIV_INTERN +void +page_rec_write_index_page_no( +/*=========================*/ + rec_t* rec, /* in: record to update */ + ulint i, /* in: index of the field to update */ + ulint page_no,/* in: value to write */ + mtr_t* mtr) /* in: mtr */ +{ + byte* data; + ulint len; + + data = rec_get_nth_field_old(rec, i, &len); + + ut_ad(len == 4); + + mlog_write_ulint(data, page_no, MLOG_4BYTES, mtr); +} + +/****************************************************************** +Used to delete n slots from the directory. This function updates +also n_owned fields in the records, so that the first slot after +the deleted ones inherits the records of the deleted slots. */ +UNIV_INLINE +void +page_dir_delete_slot( +/*=================*/ + page_t* page, /* in/out: the index page */ + page_zip_des_t* page_zip,/* in/out: compressed page, or NULL */ + ulint slot_no)/* in: slot to be deleted */ +{ + page_dir_slot_t* slot; + ulint n_owned; + ulint i; + ulint n_slots; + + ut_ad(!page_zip || page_is_comp(page)); + ut_ad(slot_no > 0); + ut_ad(slot_no + 1 < page_dir_get_n_slots(page)); + + n_slots = page_dir_get_n_slots(page); + + /* 1. Reset the n_owned fields of the slots to be + deleted */ + slot = page_dir_get_nth_slot(page, slot_no); + n_owned = page_dir_slot_get_n_owned(slot); + page_dir_slot_set_n_owned(slot, page_zip, 0); + + /* 2. Update the n_owned value of the first non-deleted slot */ + + slot = page_dir_get_nth_slot(page, slot_no + 1); + page_dir_slot_set_n_owned(slot, page_zip, + n_owned + page_dir_slot_get_n_owned(slot)); + + /* 3. Destroy the slot by copying slots */ + for (i = slot_no + 1; i < n_slots; i++) { + rec_t* rec = (rec_t*) + page_dir_slot_get_rec(page_dir_get_nth_slot(page, i)); + page_dir_slot_set_rec(page_dir_get_nth_slot(page, i - 1), rec); + } + + /* 4. Zero out the last slot, which will be removed */ + mach_write_to_2(page_dir_get_nth_slot(page, n_slots - 1), 0); + + /* 5. Update the page header */ + page_header_set_field(page, page_zip, PAGE_N_DIR_SLOTS, n_slots - 1); +} + +/****************************************************************** +Used to add n slots to the directory. Does not set the record pointers +in the added slots or update n_owned values: this is the responsibility +of the caller. */ +UNIV_INLINE +void +page_dir_add_slot( +/*==============*/ + page_t* page, /* in/out: the index page */ + page_zip_des_t* page_zip,/* in/out: comprssed page, or NULL */ + ulint start) /* in: the slot above which the new slots + are added */ +{ + page_dir_slot_t* slot; + ulint n_slots; + + n_slots = page_dir_get_n_slots(page); + + ut_ad(start < n_slots - 1); + + /* Update the page header */ + page_dir_set_n_slots(page, page_zip, n_slots + 1); + + /* Move slots up */ + slot = page_dir_get_nth_slot(page, n_slots); + memmove(slot, slot + PAGE_DIR_SLOT_SIZE, + (n_slots - 1 - start) * PAGE_DIR_SLOT_SIZE); +} + +/******************************************************************** +Splits a directory slot which owns too many records. */ +UNIV_INTERN +void +page_dir_split_slot( +/*================*/ + page_t* page, /* in/out: index page */ + page_zip_des_t* page_zip,/* in/out: compressed page whose + uncompressed part will be written, or NULL */ + ulint slot_no)/* in: the directory slot */ +{ + rec_t* rec; + page_dir_slot_t* new_slot; + page_dir_slot_t* prev_slot; + page_dir_slot_t* slot; + ulint i; + ulint n_owned; + + ut_ad(page); + ut_ad(!page_zip || page_is_comp(page)); + ut_ad(slot_no > 0); + + slot = page_dir_get_nth_slot(page, slot_no); + + n_owned = page_dir_slot_get_n_owned(slot); + ut_ad(n_owned == PAGE_DIR_SLOT_MAX_N_OWNED + 1); + + /* 1. We loop to find a record approximately in the middle of the + records owned by the slot. */ + + prev_slot = page_dir_get_nth_slot(page, slot_no - 1); + rec = (rec_t*) page_dir_slot_get_rec(prev_slot); + + for (i = 0; i < n_owned / 2; i++) { + rec = page_rec_get_next(rec); + } + + ut_ad(n_owned / 2 >= PAGE_DIR_SLOT_MIN_N_OWNED); + + /* 2. We add one directory slot immediately below the slot to be + split. */ + + page_dir_add_slot(page, page_zip, slot_no - 1); + + /* The added slot is now number slot_no, and the old slot is + now number slot_no + 1 */ + + new_slot = page_dir_get_nth_slot(page, slot_no); + slot = page_dir_get_nth_slot(page, slot_no + 1); + + /* 3. We store the appropriate values to the new slot. */ + + page_dir_slot_set_rec(new_slot, rec); + page_dir_slot_set_n_owned(new_slot, page_zip, n_owned / 2); + + /* 4. Finally, we update the number of records field of the + original slot */ + + page_dir_slot_set_n_owned(slot, page_zip, n_owned - (n_owned / 2)); +} + +/***************************************************************** +Tries to balance the given directory slot with too few records with the upper +neighbor, so that there are at least the minimum number of records owned by +the slot; this may result in the merging of two slots. */ +UNIV_INTERN +void +page_dir_balance_slot( +/*==================*/ + page_t* page, /* in/out: index page */ + page_zip_des_t* page_zip,/* in/out: compressed page, or NULL */ + ulint slot_no)/* in: the directory slot */ +{ + page_dir_slot_t* slot; + page_dir_slot_t* up_slot; + ulint n_owned; + ulint up_n_owned; + rec_t* old_rec; + rec_t* new_rec; + + ut_ad(page); + ut_ad(!page_zip || page_is_comp(page)); + ut_ad(slot_no > 0); + + slot = page_dir_get_nth_slot(page, slot_no); + + /* The last directory slot cannot be balanced with the upper + neighbor, as there is none. */ + + if (UNIV_UNLIKELY(slot_no == page_dir_get_n_slots(page) - 1)) { + + return; + } + + up_slot = page_dir_get_nth_slot(page, slot_no + 1); + + n_owned = page_dir_slot_get_n_owned(slot); + up_n_owned = page_dir_slot_get_n_owned(up_slot); + + ut_ad(n_owned == PAGE_DIR_SLOT_MIN_N_OWNED - 1); + + /* If the upper slot has the minimum value of n_owned, we will merge + the two slots, therefore we assert: */ + ut_ad(2 * PAGE_DIR_SLOT_MIN_N_OWNED - 1 <= PAGE_DIR_SLOT_MAX_N_OWNED); + + if (up_n_owned > PAGE_DIR_SLOT_MIN_N_OWNED) { + + /* In this case we can just transfer one record owned + by the upper slot to the property of the lower slot */ + old_rec = (rec_t*) page_dir_slot_get_rec(slot); + + if (page_is_comp(page)) { + new_rec = rec_get_next_ptr(old_rec, TRUE); + + rec_set_n_owned_new(old_rec, page_zip, 0); + rec_set_n_owned_new(new_rec, page_zip, n_owned + 1); + } else { + new_rec = rec_get_next_ptr(old_rec, FALSE); + + rec_set_n_owned_old(old_rec, 0); + rec_set_n_owned_old(new_rec, n_owned + 1); + } + + page_dir_slot_set_rec(slot, new_rec); + + page_dir_slot_set_n_owned(up_slot, page_zip, up_n_owned -1); + } else { + /* In this case we may merge the two slots */ + page_dir_delete_slot(page, page_zip, slot_no); + } +} + +/**************************************************************** +Returns the middle record of the record list. If there are an even number +of records in the list, returns the first record of the upper half-list. */ +UNIV_INTERN +rec_t* +page_get_middle_rec( +/*================*/ + /* out: middle record */ + page_t* page) /* in: page */ +{ + page_dir_slot_t* slot; + ulint middle; + ulint i; + ulint n_owned; + ulint count; + rec_t* rec; + + /* This many records we must leave behind */ + middle = (page_get_n_recs(page) + PAGE_HEAP_NO_USER_LOW) / 2; + + count = 0; + + for (i = 0;; i++) { + + slot = page_dir_get_nth_slot(page, i); + n_owned = page_dir_slot_get_n_owned(slot); + + if (count + n_owned > middle) { + break; + } else { + count += n_owned; + } + } + + ut_ad(i > 0); + slot = page_dir_get_nth_slot(page, i - 1); + rec = (rec_t*) page_dir_slot_get_rec(slot); + rec = page_rec_get_next(rec); + + /* There are now count records behind rec */ + + for (i = 0; i < middle - count; i++) { + rec = page_rec_get_next(rec); + } + + return(rec); +} + +/******************************************************************* +Returns the number of records before the given record in chain. +The number includes infimum and supremum records. */ +UNIV_INTERN +ulint +page_rec_get_n_recs_before( +/*=======================*/ + /* out: number of records */ + const rec_t* rec) /* in: the physical record */ +{ + const page_dir_slot_t* slot; + const rec_t* slot_rec; + const page_t* page; + ulint i; + lint n = 0; + + ut_ad(page_rec_check(rec)); + + page = page_align(rec); + if (page_is_comp(page)) { + while (rec_get_n_owned_new(rec) == 0) { + + rec = rec_get_next_ptr_const(rec, TRUE); + n--; + } + + for (i = 0; ; i++) { + slot = page_dir_get_nth_slot(page, i); + slot_rec = page_dir_slot_get_rec(slot); + + n += rec_get_n_owned_new(slot_rec); + + if (rec == slot_rec) { + + break; + } + } + } else { + while (rec_get_n_owned_old(rec) == 0) { + + rec = rec_get_next_ptr_const(rec, FALSE); + n--; + } + + for (i = 0; ; i++) { + slot = page_dir_get_nth_slot(page, i); + slot_rec = page_dir_slot_get_rec(slot); + + n += rec_get_n_owned_old(slot_rec); + + if (rec == slot_rec) { + + break; + } + } + } + + n--; + + ut_ad(n >= 0); + + return((ulint) n); +} + +/**************************************************************** +Prints record contents including the data relevant only in +the index page context. */ +UNIV_INTERN +void +page_rec_print( +/*===========*/ + const rec_t* rec, /* in: physical record */ + const ulint* offsets)/* in: record descriptor */ +{ + ut_a(!page_rec_is_comp(rec) == !rec_offs_comp(offsets)); + rec_print_new(stderr, rec, offsets); + if (page_rec_is_comp(rec)) { + fprintf(stderr, + " n_owned: %lu; heap_no: %lu; next rec: %lu\n", + (ulong) rec_get_n_owned_new(rec), + (ulong) rec_get_heap_no_new(rec), + (ulong) rec_get_next_offs(rec, TRUE)); + } else { + fprintf(stderr, + " n_owned: %lu; heap_no: %lu; next rec: %lu\n", + (ulong) rec_get_n_owned_old(rec), + (ulong) rec_get_heap_no_old(rec), + (ulong) rec_get_next_offs(rec, TRUE)); + } + + page_rec_check(rec); + rec_validate(rec, offsets); +} + +/******************************************************************* +This is used to print the contents of the directory for +debugging purposes. */ +UNIV_INTERN +void +page_dir_print( +/*===========*/ + page_t* page, /* in: index page */ + ulint pr_n) /* in: print n first and n last entries */ +{ + ulint n; + ulint i; + page_dir_slot_t* slot; + + n = page_dir_get_n_slots(page); + + fprintf(stderr, "--------------------------------\n" + "PAGE DIRECTORY\n" + "Page address %p\n" + "Directory stack top at offs: %lu; number of slots: %lu\n", + page, (ulong) page_offset(page_dir_get_nth_slot(page, n - 1)), + (ulong) n); + for (i = 0; i < n; i++) { + slot = page_dir_get_nth_slot(page, i); + if ((i == pr_n) && (i < n - pr_n)) { + fputs(" ... \n", stderr); + } + if ((i < pr_n) || (i >= n - pr_n)) { + fprintf(stderr, + "Contents of slot: %lu: n_owned: %lu," + " rec offs: %lu\n", + (ulong) i, + (ulong) page_dir_slot_get_n_owned(slot), + (ulong) + page_offset(page_dir_slot_get_rec(slot))); + } + } + fprintf(stderr, "Total of %lu records\n" + "--------------------------------\n", + (ulong) (PAGE_HEAP_NO_USER_LOW + page_get_n_recs(page))); +} + +/******************************************************************* +This is used to print the contents of the page record list for +debugging purposes. */ +UNIV_INTERN +void +page_print_list( +/*============*/ + buf_block_t* block, /* in: index page */ + dict_index_t* index, /* in: dictionary index of the page */ + ulint pr_n) /* in: print n first and n last entries */ +{ + page_t* page = block->frame; + page_cur_t cur; + ulint count; + ulint n_recs; + mem_heap_t* heap = NULL; + ulint offsets_[REC_OFFS_NORMAL_SIZE]; + ulint* offsets = offsets_; + rec_offs_init(offsets_); + + ut_a((ibool)!!page_is_comp(page) == dict_table_is_comp(index->table)); + + fprintf(stderr, + "--------------------------------\n" + "PAGE RECORD LIST\n" + "Page address %p\n", page); + + n_recs = page_get_n_recs(page); + + page_cur_set_before_first(block, &cur); + count = 0; + for (;;) { + offsets = rec_get_offsets(cur.rec, index, offsets, + ULINT_UNDEFINED, &heap); + page_rec_print(cur.rec, offsets); + + if (count == pr_n) { + break; + } + if (page_cur_is_after_last(&cur)) { + break; + } + page_cur_move_to_next(&cur); + count++; + } + + if (n_recs > 2 * pr_n) { + fputs(" ... \n", stderr); + } + + while (!page_cur_is_after_last(&cur)) { + page_cur_move_to_next(&cur); + + if (count + pr_n >= n_recs) { + offsets = rec_get_offsets(cur.rec, index, offsets, + ULINT_UNDEFINED, &heap); + page_rec_print(cur.rec, offsets); + } + count++; + } + + fprintf(stderr, + "Total of %lu records \n" + "--------------------------------\n", + (ulong) (count + 1)); + + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } +} + +/******************************************************************* +Prints the info in a page header. */ +UNIV_INTERN +void +page_header_print( +/*==============*/ + const page_t* page) +{ + fprintf(stderr, + "--------------------------------\n" + "PAGE HEADER INFO\n" + "Page address %p, n records %lu (%s)\n" + "n dir slots %lu, heap top %lu\n" + "Page n heap %lu, free %lu, garbage %lu\n" + "Page last insert %lu, direction %lu, n direction %lu\n", + page, (ulong) page_header_get_field(page, PAGE_N_RECS), + page_is_comp(page) ? "compact format" : "original format", + (ulong) page_header_get_field(page, PAGE_N_DIR_SLOTS), + (ulong) page_header_get_field(page, PAGE_HEAP_TOP), + (ulong) page_dir_get_n_heap(page), + (ulong) page_header_get_field(page, PAGE_FREE), + (ulong) page_header_get_field(page, PAGE_GARBAGE), + (ulong) page_header_get_field(page, PAGE_LAST_INSERT), + (ulong) page_header_get_field(page, PAGE_DIRECTION), + (ulong) page_header_get_field(page, PAGE_N_DIRECTION)); +} + +/******************************************************************* +This is used to print the contents of the page for +debugging purposes. */ +UNIV_INTERN +void +page_print( +/*=======*/ + buf_block_t* block, /* in: index page */ + dict_index_t* index, /* in: dictionary index of the page */ + ulint dn, /* in: print dn first and last entries + in directory */ + ulint rn) /* in: print rn first and last records + in directory */ +{ + page_t* page = block->frame; + + page_header_print(page); + page_dir_print(page, dn); + page_print_list(block, index, rn); +} + +/******************************************************************* +The following is used to validate a record on a page. This function +differs from rec_validate as it can also check the n_owned field and +the heap_no field. */ +UNIV_INTERN +ibool +page_rec_validate( +/*==============*/ + /* out: TRUE if ok */ + rec_t* rec, /* in: physical record */ + const ulint* offsets)/* in: array returned by rec_get_offsets() */ +{ + ulint n_owned; + ulint heap_no; + page_t* page; + + page = page_align(rec); + ut_a(!page_is_comp(page) == !rec_offs_comp(offsets)); + + page_rec_check(rec); + rec_validate(rec, offsets); + + if (page_rec_is_comp(rec)) { + n_owned = rec_get_n_owned_new(rec); + heap_no = rec_get_heap_no_new(rec); + } else { + n_owned = rec_get_n_owned_old(rec); + heap_no = rec_get_heap_no_old(rec); + } + + if (UNIV_UNLIKELY(!(n_owned <= PAGE_DIR_SLOT_MAX_N_OWNED))) { + fprintf(stderr, + "InnoDB: Dir slot of rec %lu, n owned too big %lu\n", + (ulong) page_offset(rec), (ulong) n_owned); + return(FALSE); + } + + if (UNIV_UNLIKELY(!(heap_no < page_dir_get_n_heap(page)))) { + fprintf(stderr, + "InnoDB: Heap no of rec %lu too big %lu %lu\n", + (ulong) page_offset(rec), (ulong) heap_no, + (ulong) page_dir_get_n_heap(page)); + return(FALSE); + } + + return(TRUE); +} + +/******************************************************************* +Checks that the first directory slot points to the infimum record and +the last to the supremum. This function is intended to track if the +bug fixed in 4.0.14 has caused corruption to users' databases. */ +UNIV_INTERN +void +page_check_dir( +/*===========*/ + const page_t* page) /* in: index page */ +{ + ulint n_slots; + ulint infimum_offs; + ulint supremum_offs; + + n_slots = page_dir_get_n_slots(page); + infimum_offs = mach_read_from_2(page_dir_get_nth_slot(page, 0)); + supremum_offs = mach_read_from_2(page_dir_get_nth_slot(page, + n_slots - 1)); + + if (UNIV_UNLIKELY(!page_rec_is_infimum_low(infimum_offs))) { + + fprintf(stderr, + "InnoDB: Page directory corruption:" + " infimum not pointed to\n"); + buf_page_print(page, 0); + } + + if (UNIV_UNLIKELY(!page_rec_is_supremum_low(supremum_offs))) { + + fprintf(stderr, + "InnoDB: Page directory corruption:" + " supremum not pointed to\n"); + buf_page_print(page, 0); + } +} + +/******************************************************************* +This function checks the consistency of an index page when we do not +know the index. This is also resilient so that this should never crash +even if the page is total garbage. */ +UNIV_INTERN +ibool +page_simple_validate_old( +/*=====================*/ + /* out: TRUE if ok */ + page_t* page) /* in: old-style index page */ +{ + page_dir_slot_t* slot; + ulint slot_no; + ulint n_slots; + rec_t* rec; + byte* rec_heap_top; + ulint count; + ulint own_count; + ibool ret = FALSE; + + ut_a(!page_is_comp(page)); + + /* Check first that the record heap and the directory do not + overlap. */ + + n_slots = page_dir_get_n_slots(page); + + if (UNIV_UNLIKELY(n_slots > UNIV_PAGE_SIZE / 4)) { + fprintf(stderr, + "InnoDB: Nonsensical number %lu of page dir slots\n", + (ulong) n_slots); + + goto func_exit; + } + + rec_heap_top = page_header_get_ptr(page, PAGE_HEAP_TOP); + + if (UNIV_UNLIKELY(rec_heap_top + > page_dir_get_nth_slot(page, n_slots - 1))) { + + fprintf(stderr, + "InnoDB: Record heap and dir overlap on a page," + " heap top %lu, dir %lu\n", + (ulong) page_header_get_field(page, PAGE_HEAP_TOP), + (ulong) + page_offset(page_dir_get_nth_slot(page, n_slots - 1))); + + goto func_exit; + } + + /* Validate the record list in a loop checking also that it is + consistent with the page record directory. */ + + count = 0; + own_count = 1; + slot_no = 0; + slot = page_dir_get_nth_slot(page, slot_no); + + rec = page_get_infimum_rec(page); + + for (;;) { + if (UNIV_UNLIKELY(rec > rec_heap_top)) { + fprintf(stderr, + "InnoDB: Record %lu is above" + " rec heap top %lu\n", + (ulong)(rec - page), + (ulong)(rec_heap_top - page)); + + goto func_exit; + } + + if (UNIV_UNLIKELY(rec_get_n_owned_old(rec))) { + /* This is a record pointed to by a dir slot */ + if (UNIV_UNLIKELY(rec_get_n_owned_old(rec) + != own_count)) { + + fprintf(stderr, + "InnoDB: Wrong owned count %lu, %lu," + " rec %lu\n", + (ulong) rec_get_n_owned_old(rec), + (ulong) own_count, + (ulong)(rec - page)); + + goto func_exit; + } + + if (UNIV_UNLIKELY + (page_dir_slot_get_rec(slot) != rec)) { + fprintf(stderr, + "InnoDB: Dir slot does not point" + " to right rec %lu\n", + (ulong)(rec - page)); + + goto func_exit; + } + + own_count = 0; + + if (!page_rec_is_supremum(rec)) { + slot_no++; + slot = page_dir_get_nth_slot(page, slot_no); + } + } + + if (page_rec_is_supremum(rec)) { + + break; + } + + if (UNIV_UNLIKELY + (rec_get_next_offs(rec, FALSE) < FIL_PAGE_DATA + || rec_get_next_offs(rec, FALSE) >= UNIV_PAGE_SIZE)) { + fprintf(stderr, + "InnoDB: Next record offset" + " nonsensical %lu for rec %lu\n", + (ulong) rec_get_next_offs(rec, FALSE), + (ulong) (rec - page)); + + goto func_exit; + } + + count++; + + if (UNIV_UNLIKELY(count > UNIV_PAGE_SIZE)) { + fprintf(stderr, + "InnoDB: Page record list appears" + " to be circular %lu\n", + (ulong) count); + goto func_exit; + } + + rec = page_rec_get_next(rec); + own_count++; + } + + if (UNIV_UNLIKELY(rec_get_n_owned_old(rec) == 0)) { + fprintf(stderr, "InnoDB: n owned is zero in a supremum rec\n"); + + goto func_exit; + } + + if (UNIV_UNLIKELY(slot_no != n_slots - 1)) { + fprintf(stderr, "InnoDB: n slots wrong %lu, %lu\n", + (ulong) slot_no, (ulong) (n_slots - 1)); + goto func_exit; + } + + if (UNIV_UNLIKELY(page_header_get_field(page, PAGE_N_RECS) + + PAGE_HEAP_NO_USER_LOW + != count + 1)) { + fprintf(stderr, "InnoDB: n recs wrong %lu %lu\n", + (ulong) page_header_get_field(page, PAGE_N_RECS) + + PAGE_HEAP_NO_USER_LOW, + (ulong) (count + 1)); + + goto func_exit; + } + + /* Check then the free list */ + rec = page_header_get_ptr(page, PAGE_FREE); + + while (rec != NULL) { + if (UNIV_UNLIKELY(rec < page + FIL_PAGE_DATA + || rec >= page + UNIV_PAGE_SIZE)) { + fprintf(stderr, + "InnoDB: Free list record has" + " a nonsensical offset %lu\n", + (ulong) (rec - page)); + + goto func_exit; + } + + if (UNIV_UNLIKELY(rec > rec_heap_top)) { + fprintf(stderr, + "InnoDB: Free list record %lu" + " is above rec heap top %lu\n", + (ulong) (rec - page), + (ulong) (rec_heap_top - page)); + + goto func_exit; + } + + count++; + + if (UNIV_UNLIKELY(count > UNIV_PAGE_SIZE)) { + fprintf(stderr, + "InnoDB: Page free list appears" + " to be circular %lu\n", + (ulong) count); + goto func_exit; + } + + rec = page_rec_get_next(rec); + } + + if (UNIV_UNLIKELY(page_dir_get_n_heap(page) != count + 1)) { + + fprintf(stderr, "InnoDB: N heap is wrong %lu, %lu\n", + (ulong) page_dir_get_n_heap(page), + (ulong) (count + 1)); + + goto func_exit; + } + + ret = TRUE; + +func_exit: + return(ret); +} + +/******************************************************************* +This function checks the consistency of an index page when we do not +know the index. This is also resilient so that this should never crash +even if the page is total garbage. */ +UNIV_INTERN +ibool +page_simple_validate_new( +/*=====================*/ + /* out: TRUE if ok */ + page_t* page) /* in: new-style index page */ +{ + page_dir_slot_t* slot; + ulint slot_no; + ulint n_slots; + rec_t* rec; + byte* rec_heap_top; + ulint count; + ulint own_count; + ibool ret = FALSE; + + ut_a(page_is_comp(page)); + + /* Check first that the record heap and the directory do not + overlap. */ + + n_slots = page_dir_get_n_slots(page); + + if (UNIV_UNLIKELY(n_slots > UNIV_PAGE_SIZE / 4)) { + fprintf(stderr, + "InnoDB: Nonsensical number %lu" + " of page dir slots\n", (ulong) n_slots); + + goto func_exit; + } + + rec_heap_top = page_header_get_ptr(page, PAGE_HEAP_TOP); + + if (UNIV_UNLIKELY(rec_heap_top + > page_dir_get_nth_slot(page, n_slots - 1))) { + + fprintf(stderr, + "InnoDB: Record heap and dir overlap on a page," + " heap top %lu, dir %lu\n", + (ulong) page_header_get_field(page, PAGE_HEAP_TOP), + (ulong) + page_offset(page_dir_get_nth_slot(page, n_slots - 1))); + + goto func_exit; + } + + /* Validate the record list in a loop checking also that it is + consistent with the page record directory. */ + + count = 0; + own_count = 1; + slot_no = 0; + slot = page_dir_get_nth_slot(page, slot_no); + + rec = page_get_infimum_rec(page); + + for (;;) { + if (UNIV_UNLIKELY(rec > rec_heap_top)) { + fprintf(stderr, + "InnoDB: Record %lu is above rec" + " heap top %lu\n", + (ulong) page_offset(rec), + (ulong) page_offset(rec_heap_top)); + + goto func_exit; + } + + if (UNIV_UNLIKELY(rec_get_n_owned_new(rec))) { + /* This is a record pointed to by a dir slot */ + if (UNIV_UNLIKELY(rec_get_n_owned_new(rec) + != own_count)) { + + fprintf(stderr, + "InnoDB: Wrong owned count %lu, %lu," + " rec %lu\n", + (ulong) rec_get_n_owned_new(rec), + (ulong) own_count, + (ulong) page_offset(rec)); + + goto func_exit; + } + + if (UNIV_UNLIKELY + (page_dir_slot_get_rec(slot) != rec)) { + fprintf(stderr, + "InnoDB: Dir slot does not point" + " to right rec %lu\n", + (ulong) page_offset(rec)); + + goto func_exit; + } + + own_count = 0; + + if (!page_rec_is_supremum(rec)) { + slot_no++; + slot = page_dir_get_nth_slot(page, slot_no); + } + } + + if (page_rec_is_supremum(rec)) { + + break; + } + + if (UNIV_UNLIKELY + (rec_get_next_offs(rec, TRUE) < FIL_PAGE_DATA + || rec_get_next_offs(rec, TRUE) >= UNIV_PAGE_SIZE)) { + fprintf(stderr, + "InnoDB: Next record offset nonsensical %lu" + " for rec %lu\n", + (ulong) rec_get_next_offs(rec, TRUE), + (ulong) page_offset(rec)); + + goto func_exit; + } + + count++; + + if (UNIV_UNLIKELY(count > UNIV_PAGE_SIZE)) { + fprintf(stderr, + "InnoDB: Page record list appears" + " to be circular %lu\n", + (ulong) count); + goto func_exit; + } + + rec = page_rec_get_next(rec); + own_count++; + } + + if (UNIV_UNLIKELY(rec_get_n_owned_new(rec) == 0)) { + fprintf(stderr, "InnoDB: n owned is zero" + " in a supremum rec\n"); + + goto func_exit; + } + + if (UNIV_UNLIKELY(slot_no != n_slots - 1)) { + fprintf(stderr, "InnoDB: n slots wrong %lu, %lu\n", + (ulong) slot_no, (ulong) (n_slots - 1)); + goto func_exit; + } + + if (UNIV_UNLIKELY(page_header_get_field(page, PAGE_N_RECS) + + PAGE_HEAP_NO_USER_LOW + != count + 1)) { + fprintf(stderr, "InnoDB: n recs wrong %lu %lu\n", + (ulong) page_header_get_field(page, PAGE_N_RECS) + + PAGE_HEAP_NO_USER_LOW, + (ulong) (count + 1)); + + goto func_exit; + } + + /* Check then the free list */ + rec = page_header_get_ptr(page, PAGE_FREE); + + while (rec != NULL) { + if (UNIV_UNLIKELY(rec < page + FIL_PAGE_DATA + || rec >= page + UNIV_PAGE_SIZE)) { + fprintf(stderr, + "InnoDB: Free list record has" + " a nonsensical offset %lu\n", + (ulong) page_offset(rec)); + + goto func_exit; + } + + if (UNIV_UNLIKELY(rec > rec_heap_top)) { + fprintf(stderr, + "InnoDB: Free list record %lu" + " is above rec heap top %lu\n", + (ulong) page_offset(rec), + (ulong) page_offset(rec_heap_top)); + + goto func_exit; + } + + count++; + + if (UNIV_UNLIKELY(count > UNIV_PAGE_SIZE)) { + fprintf(stderr, + "InnoDB: Page free list appears" + " to be circular %lu\n", + (ulong) count); + goto func_exit; + } + + rec = page_rec_get_next(rec); + } + + if (UNIV_UNLIKELY(page_dir_get_n_heap(page) != count + 1)) { + + fprintf(stderr, "InnoDB: N heap is wrong %lu, %lu\n", + (ulong) page_dir_get_n_heap(page), + (ulong) (count + 1)); + + goto func_exit; + } + + ret = TRUE; + +func_exit: + return(ret); +} + +/******************************************************************* +This function checks the consistency of an index page. */ +UNIV_INTERN +ibool +page_validate( +/*==========*/ + /* out: TRUE if ok */ + page_t* page, /* in: index page */ + dict_index_t* index) /* in: data dictionary index containing + the page record type definition */ +{ + page_dir_slot_t*slot; + mem_heap_t* heap; + byte* buf; + ulint count; + ulint own_count; + ulint rec_own_count; + ulint slot_no; + ulint data_size; + rec_t* rec; + rec_t* old_rec = NULL; + ulint offs; + ulint n_slots; + ibool ret = FALSE; + ulint i; + ulint* offsets = NULL; + ulint* old_offsets = NULL; + + if (UNIV_UNLIKELY((ibool) !!page_is_comp(page) + != dict_table_is_comp(index->table))) { + fputs("InnoDB: 'compact format' flag mismatch\n", stderr); + goto func_exit2; + } + if (page_is_comp(page)) { + if (UNIV_UNLIKELY(!page_simple_validate_new(page))) { + goto func_exit2; + } + } else { + if (UNIV_UNLIKELY(!page_simple_validate_old(page))) { + goto func_exit2; + } + } + + heap = mem_heap_create(UNIV_PAGE_SIZE + 200); + + /* The following buffer is used to check that the + records in the page record heap do not overlap */ + + buf = mem_heap_zalloc(heap, UNIV_PAGE_SIZE); + + /* Check first that the record heap and the directory do not + overlap. */ + + n_slots = page_dir_get_n_slots(page); + + if (UNIV_UNLIKELY(!(page_header_get_ptr(page, PAGE_HEAP_TOP) + <= page_dir_get_nth_slot(page, n_slots - 1)))) { + + fputs("InnoDB: Record heap and dir overlap on a page ", + stderr); + dict_index_name_print(stderr, NULL, index); + fprintf(stderr, ", %p, %p\n", + page_header_get_ptr(page, PAGE_HEAP_TOP), + page_dir_get_nth_slot(page, n_slots - 1)); + + goto func_exit; + } + + /* Validate the record list in a loop checking also that + it is consistent with the directory. */ + count = 0; + data_size = 0; + own_count = 1; + slot_no = 0; + slot = page_dir_get_nth_slot(page, slot_no); + + rec = page_get_infimum_rec(page); + + for (;;) { + offsets = rec_get_offsets(rec, index, offsets, + ULINT_UNDEFINED, &heap); + + if (page_is_comp(page) && page_rec_is_user_rec(rec) + && UNIV_UNLIKELY(rec_get_node_ptr_flag(rec) + == page_is_leaf(page))) { + fputs("InnoDB: node_ptr flag mismatch\n", stderr); + goto func_exit; + } + + if (UNIV_UNLIKELY(!page_rec_validate(rec, offsets))) { + goto func_exit; + } + + /* Check that the records are in the ascending order */ + if (UNIV_LIKELY(count >= PAGE_HEAP_NO_USER_LOW) + && !page_rec_is_supremum(rec)) { + if (UNIV_UNLIKELY + (1 != cmp_rec_rec(rec, old_rec, + offsets, old_offsets, index))) { + fprintf(stderr, + "InnoDB: Records in wrong order" + " on page %lu ", + (ulong) page_get_page_no(page)); + dict_index_name_print(stderr, NULL, index); + fputs("\nInnoDB: previous record ", stderr); + rec_print_new(stderr, old_rec, old_offsets); + fputs("\nInnoDB: record ", stderr); + rec_print_new(stderr, rec, offsets); + putc('\n', stderr); + + goto func_exit; + } + } + + if (page_rec_is_user_rec(rec)) { + + data_size += rec_offs_size(offsets); + } + + offs = page_offset(rec_get_start(rec, offsets)); + + for (i = rec_offs_size(offsets); i--; ) { + if (UNIV_UNLIKELY(buf[offs + i])) { + /* No other record may overlap this */ + + fputs("InnoDB: Record overlaps another\n", + stderr); + goto func_exit; + } + + buf[offs + i] = 1; + } + + if (page_is_comp(page)) { + rec_own_count = rec_get_n_owned_new(rec); + } else { + rec_own_count = rec_get_n_owned_old(rec); + } + + if (UNIV_UNLIKELY(rec_own_count)) { + /* This is a record pointed to by a dir slot */ + if (UNIV_UNLIKELY(rec_own_count != own_count)) { + fprintf(stderr, + "InnoDB: Wrong owned count %lu, %lu\n", + (ulong) rec_own_count, + (ulong) own_count); + goto func_exit; + } + + if (page_dir_slot_get_rec(slot) != rec) { + fputs("InnoDB: Dir slot does not" + " point to right rec\n", + stderr); + goto func_exit; + } + + page_dir_slot_check(slot); + + own_count = 0; + if (!page_rec_is_supremum(rec)) { + slot_no++; + slot = page_dir_get_nth_slot(page, slot_no); + } + } + + if (page_rec_is_supremum(rec)) { + break; + } + + count++; + own_count++; + old_rec = rec; + rec = page_rec_get_next(rec); + + /* set old_offsets to offsets; recycle offsets */ + { + ulint* offs = old_offsets; + old_offsets = offsets; + offsets = offs; + } + } + + if (page_is_comp(page)) { + if (UNIV_UNLIKELY(rec_get_n_owned_new(rec) == 0)) { + + goto n_owned_zero; + } + } else if (UNIV_UNLIKELY(rec_get_n_owned_old(rec) == 0)) { +n_owned_zero: + fputs("InnoDB: n owned is zero\n", stderr); + goto func_exit; + } + + if (UNIV_UNLIKELY(slot_no != n_slots - 1)) { + fprintf(stderr, "InnoDB: n slots wrong %lu %lu\n", + (ulong) slot_no, (ulong) (n_slots - 1)); + goto func_exit; + } + + if (UNIV_UNLIKELY(page_header_get_field(page, PAGE_N_RECS) + + PAGE_HEAP_NO_USER_LOW + != count + 1)) { + fprintf(stderr, "InnoDB: n recs wrong %lu %lu\n", + (ulong) page_header_get_field(page, PAGE_N_RECS) + + PAGE_HEAP_NO_USER_LOW, + (ulong) (count + 1)); + goto func_exit; + } + + if (UNIV_UNLIKELY(data_size != page_get_data_size(page))) { + fprintf(stderr, + "InnoDB: Summed data size %lu, returned by func %lu\n", + (ulong) data_size, (ulong) page_get_data_size(page)); + goto func_exit; + } + + /* Check then the free list */ + rec = page_header_get_ptr(page, PAGE_FREE); + + while (rec != NULL) { + offsets = rec_get_offsets(rec, index, offsets, + ULINT_UNDEFINED, &heap); + if (UNIV_UNLIKELY(!page_rec_validate(rec, offsets))) { + + goto func_exit; + } + + count++; + offs = page_offset(rec_get_start(rec, offsets)); + + for (i = rec_offs_size(offsets); i--; ) { + + if (UNIV_UNLIKELY(buf[offs + i])) { + fputs("InnoDB: Record overlaps another" + " in free list\n", stderr); + goto func_exit; + } + + buf[offs + i] = 1; + } + + rec = page_rec_get_next(rec); + } + + if (UNIV_UNLIKELY(page_dir_get_n_heap(page) != count + 1)) { + fprintf(stderr, "InnoDB: N heap is wrong %lu %lu\n", + (ulong) page_dir_get_n_heap(page), + (ulong) count + 1); + goto func_exit; + } + + ret = TRUE; + +func_exit: + mem_heap_free(heap); + + if (UNIV_UNLIKELY(ret == FALSE)) { +func_exit2: + fprintf(stderr, "InnoDB: Apparent corruption in page %lu in ", + (ulong) page_get_page_no(page)); + dict_index_name_print(stderr, NULL, index); + putc('\n', stderr); + buf_page_print(page, 0); + } + + return(ret); +} + +/******************************************************************* +Looks in the page record list for a record with the given heap number. */ +UNIV_INTERN +const rec_t* +page_find_rec_with_heap_no( +/*=======================*/ + /* out: record, NULL if not found */ + const page_t* page, /* in: index page */ + ulint heap_no)/* in: heap number */ +{ + const rec_t* rec; + + if (page_is_comp(page)) { + rec = page + PAGE_NEW_INFIMUM; + + for(;;) { + ulint rec_heap_no = rec_get_heap_no_new(rec); + + if (rec_heap_no == heap_no) { + + return(rec); + } else if (rec_heap_no == PAGE_HEAP_NO_SUPREMUM) { + + return(NULL); + } + + rec = page + rec_get_next_offs(rec, TRUE); + } + } else { + rec = page + PAGE_OLD_INFIMUM; + + for (;;) { + ulint rec_heap_no = rec_get_heap_no_old(rec); + + if (rec_heap_no == heap_no) { + + return(rec); + } else if (rec_heap_no == PAGE_HEAP_NO_SUPREMUM) { + + return(NULL); + } + + rec = page + rec_get_next_offs(rec, FALSE); + } + } +} === added file 'storage/xtradb/page/page0zip.c' --- a/storage/xtradb/page/page0zip.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/page/page0zip.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,4575 @@ +/***************************************************************************** + +Copyright (c) 2005, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Compressed page interface + +Created June 2005 by Marko Makela +*******************************************************/ + +#define THIS_MODULE +#include "page0zip.h" +#ifdef UNIV_NONINL +# include "page0zip.ic" +#endif +#undef THIS_MODULE +#include "page0page.h" +#include "mtr0log.h" +#include "ut0sort.h" +#include "dict0boot.h" +#include "dict0dict.h" +#include "btr0sea.h" +#include "btr0cur.h" +#include "page0types.h" +#include "lock0lock.h" +#include "log0recv.h" +#include "zlib.h" +#include "buf0lru.h" + +/** Statistics on compression, indexed by page_zip_des_t::ssize - 1 */ +UNIV_INTERN page_zip_stat_t page_zip_stat[PAGE_ZIP_NUM_SSIZE - 1]; + +/* Please refer to ../include/page0zip.ic for a description of the +compressed page format. */ + +/* The infimum and supremum records are omitted from the compressed page. +On compress, we compare that the records are there, and on uncompress we +restore the records. */ +static const byte infimum_extra[] = { + 0x01, /* info_bits=0, n_owned=1 */ + 0x00, 0x02 /* heap_no=0, status=2 */ + /* ?, ? */ /* next=(first user rec, or supremum) */ +}; +static const byte infimum_data[] = { + 0x69, 0x6e, 0x66, 0x69, + 0x6d, 0x75, 0x6d, 0x00 /* "infimum\0" */ +}; +static const byte supremum_extra_data[] = { + /* 0x0?, */ /* info_bits=0, n_owned=1..8 */ + 0x00, 0x0b, /* heap_no=1, status=3 */ + 0x00, 0x00, /* next=0 */ + 0x73, 0x75, 0x70, 0x72, + 0x65, 0x6d, 0x75, 0x6d /* "supremum" */ +}; + +/** Assert that a block of memory is filled with zero bytes. +Compare at most sizeof(field_ref_zero) bytes. */ +#define ASSERT_ZERO(b, s) \ + ut_ad(!memcmp(b, field_ref_zero, ut_min(s, sizeof field_ref_zero))) +/** Assert that a BLOB pointer is filled with zero bytes. */ +#define ASSERT_ZERO_BLOB(b) \ + ut_ad(!memcmp(b, field_ref_zero, sizeof field_ref_zero)) + +/* Enable some extra debugging output. This code can be enabled +independently of any UNIV_ debugging conditions. */ +#if defined UNIV_DEBUG || defined UNIV_ZIP_DEBUG +# include <stdarg.h> +__attribute__((format (printf, 1, 2))) +/************************************************************************** +Report a failure to decompress or compress. */ +static +int +page_zip_fail_func( +/*===============*/ + /* out: number of characters printed */ + const char* fmt, /* in: printf(3) format string */ + ...) /* in: arguments corresponding to fmt */ +{ + int res; + va_list ap; + + ut_print_timestamp(stderr); + fputs(" InnoDB: ", stderr); + va_start(ap, fmt); + res = vfprintf(stderr, fmt, ap); + va_end(ap); + + return(res); +} +# define page_zip_fail(fmt_args) page_zip_fail_func fmt_args +#else /* UNIV_DEBUG || UNIV_ZIP_DEBUG */ +# define page_zip_fail(fmt_args) /* empty */ +#endif /* UNIV_DEBUG || UNIV_ZIP_DEBUG */ + +/************************************************************************** +Determine the guaranteed free space on an empty page. */ +UNIV_INTERN +ulint +page_zip_empty_size( +/*================*/ + /* out: minimum payload size on the page */ + ulint n_fields, /* in: number of columns in the index */ + ulint zip_size) /* in: compressed page size in bytes */ +{ + lint size = zip_size + /* subtract the page header and the longest + uncompressed data needed for one record */ + - (PAGE_DATA + + PAGE_ZIP_DIR_SLOT_SIZE + + DATA_TRX_ID_LEN + DATA_ROLL_PTR_LEN + + 1/* encoded heap_no==2 in page_zip_write_rec() */ + + 1/* end of modification log */ + - REC_N_NEW_EXTRA_BYTES/* omitted bytes */) + /* subtract the space for page_zip_fields_encode() */ + - compressBound(2 * (n_fields + 1)); + return(size > 0 ? (ulint) size : 0); +} + +/***************************************************************** +Gets the size of the compressed page trailer (the dense page directory), +including deleted records (the free list). */ +UNIV_INLINE +ulint +page_zip_dir_size( +/*==============*/ + /* out: length of dense page + directory, in bytes */ + const page_zip_des_t* page_zip) /* in: compressed page */ +{ + /* Exclude the page infimum and supremum from the record count. */ + ulint size = PAGE_ZIP_DIR_SLOT_SIZE + * (page_dir_get_n_heap(page_zip->data) + - PAGE_HEAP_NO_USER_LOW); + return(size); +} + +/***************************************************************** +Gets the size of the compressed page trailer (the dense page directory), +only including user records (excluding the free list). */ +UNIV_INLINE +ulint +page_zip_dir_user_size( +/*===================*/ + /* out: length of dense page + directory comprising existing + records, in bytes */ + const page_zip_des_t* page_zip) /* in: compressed page */ +{ + ulint size = PAGE_ZIP_DIR_SLOT_SIZE + * page_get_n_recs(page_zip->data); + ut_ad(size <= page_zip_dir_size(page_zip)); + return(size); +} + +/***************************************************************** +Find the slot of the given record in the dense page directory. */ +UNIV_INLINE +byte* +page_zip_dir_find_low( +/*==================*/ + /* out: dense directory slot, + or NULL if record not found */ + byte* slot, /* in: start of records */ + byte* end, /* in: end of records */ + ulint offset) /* in: offset of user record */ +{ + ut_ad(slot <= end); + + for (; slot < end; slot += PAGE_ZIP_DIR_SLOT_SIZE) { + if ((mach_read_from_2(slot) & PAGE_ZIP_DIR_SLOT_MASK) + == offset) { + return(slot); + } + } + + return(NULL); +} + +/***************************************************************** +Find the slot of the given non-free record in the dense page directory. */ +UNIV_INLINE +byte* +page_zip_dir_find( +/*==============*/ + /* out: dense directory slot, + or NULL if record not found */ + page_zip_des_t* page_zip, /* in: compressed page */ + ulint offset) /* in: offset of user record */ +{ + byte* end = page_zip->data + page_zip_get_size(page_zip); + + ut_ad(page_zip_simple_validate(page_zip)); + + return(page_zip_dir_find_low(end - page_zip_dir_user_size(page_zip), + end, + offset)); +} + +/***************************************************************** +Find the slot of the given free record in the dense page directory. */ +UNIV_INLINE +byte* +page_zip_dir_find_free( +/*===================*/ + /* out: dense directory slot, + or NULL if record not found */ + page_zip_des_t* page_zip, /* in: compressed page */ + ulint offset) /* in: offset of user record */ +{ + byte* end = page_zip->data + page_zip_get_size(page_zip); + + ut_ad(page_zip_simple_validate(page_zip)); + + return(page_zip_dir_find_low(end - page_zip_dir_size(page_zip), + end - page_zip_dir_user_size(page_zip), + offset)); +} + +/***************************************************************** +Read a given slot in the dense page directory. */ +UNIV_INLINE +ulint +page_zip_dir_get( +/*=============*/ + /* out: record offset + on the uncompressed page, + possibly ORed with + PAGE_ZIP_DIR_SLOT_DEL or + PAGE_ZIP_DIR_SLOT_OWNED */ + const page_zip_des_t* page_zip, /* in: compressed page */ + ulint slot) /* in: slot + (0=first user record) */ +{ + ut_ad(page_zip_simple_validate(page_zip)); + ut_ad(slot < page_zip_dir_size(page_zip) / PAGE_ZIP_DIR_SLOT_SIZE); + return(mach_read_from_2(page_zip->data + page_zip_get_size(page_zip) + - PAGE_ZIP_DIR_SLOT_SIZE * (slot + 1))); +} + +/************************************************************************** +Write a log record of compressing an index page. */ +static +void +page_zip_compress_write_log( +/*========================*/ + const page_zip_des_t* page_zip,/* in: compressed page */ + const page_t* page, /* in: uncompressed page */ + dict_index_t* index, /* in: index of the B-tree node */ + mtr_t* mtr) /* in: mini-transaction */ +{ + byte* log_ptr; + ulint trailer_size; + + log_ptr = mlog_open(mtr, 11 + 2 + 2); + + if (!log_ptr) { + + return; + } + + /* Read the number of user records. */ + trailer_size = page_dir_get_n_heap(page_zip->data) + - PAGE_HEAP_NO_USER_LOW; + /* Multiply by uncompressed of size stored per record */ + if (!page_is_leaf(page)) { + trailer_size *= PAGE_ZIP_DIR_SLOT_SIZE + REC_NODE_PTR_SIZE; + } else if (dict_index_is_clust(index)) { + trailer_size *= PAGE_ZIP_DIR_SLOT_SIZE + + DATA_TRX_ID_LEN + DATA_ROLL_PTR_LEN; + } else { + trailer_size *= PAGE_ZIP_DIR_SLOT_SIZE; + } + /* Add the space occupied by BLOB pointers. */ + trailer_size += page_zip->n_blobs * BTR_EXTERN_FIELD_REF_SIZE; + ut_a(page_zip->m_end > PAGE_DATA); +#if FIL_PAGE_DATA > PAGE_DATA +# error "FIL_PAGE_DATA > PAGE_DATA" +#endif + ut_a(page_zip->m_end + trailer_size <= page_zip_get_size(page_zip)); + + log_ptr = mlog_write_initial_log_record_fast((page_t*) page, + MLOG_ZIP_PAGE_COMPRESS, + log_ptr, mtr); + mach_write_to_2(log_ptr, page_zip->m_end - FIL_PAGE_TYPE); + log_ptr += 2; + mach_write_to_2(log_ptr, trailer_size); + log_ptr += 2; + mlog_close(mtr, log_ptr); + + /* Write FIL_PAGE_PREV and FIL_PAGE_NEXT */ + mlog_catenate_string(mtr, page_zip->data + FIL_PAGE_PREV, 4); + mlog_catenate_string(mtr, page_zip->data + FIL_PAGE_NEXT, 4); + /* Write most of the page header, the compressed stream and + the modification log. */ + mlog_catenate_string(mtr, page_zip->data + FIL_PAGE_TYPE, + page_zip->m_end - FIL_PAGE_TYPE); + /* Write the uncompressed trailer of the compressed page. */ + mlog_catenate_string(mtr, page_zip->data + page_zip_get_size(page_zip) + - trailer_size, trailer_size); +} + +/********************************************************** +Determine how many externally stored columns are contained +in existing records with smaller heap_no than rec. */ +static +ulint +page_zip_get_n_prev_extern( +/*=======================*/ + const page_zip_des_t* page_zip,/* in: dense page directory on + compressed page */ + const rec_t* rec, /* in: compact physical record + on a B-tree leaf page */ + dict_index_t* index) /* in: record descriptor */ +{ + const page_t* page = page_align(rec); + ulint n_ext = 0; + ulint i; + ulint left; + ulint heap_no; + ulint n_recs = page_get_n_recs(page_zip->data); + + ut_ad(page_is_leaf(page)); + ut_ad(page_is_comp(page)); + ut_ad(dict_table_is_comp(index->table)); + ut_ad(dict_index_is_clust(index)); + + heap_no = rec_get_heap_no_new(rec); + ut_ad(heap_no >= PAGE_HEAP_NO_USER_LOW); + left = heap_no - PAGE_HEAP_NO_USER_LOW; + if (UNIV_UNLIKELY(!left)) { + return(0); + } + + for (i = 0; i < n_recs; i++) { + const rec_t* r = page + (page_zip_dir_get(page_zip, i) + & PAGE_ZIP_DIR_SLOT_MASK); + + if (rec_get_heap_no_new(r) < heap_no) { + n_ext += rec_get_n_extern_new(r, index, + ULINT_UNDEFINED); + if (!--left) { + break; + } + } + } + + return(n_ext); +} + +/************************************************************************** +Encode the length of a fixed-length column. */ +static +byte* +page_zip_fixed_field_encode( +/*========================*/ + /* out: buf + length of encoded val */ + byte* buf, /* in: pointer to buffer where to write */ + ulint val) /* in: value to write */ +{ + ut_ad(val >= 2); + + if (UNIV_LIKELY(val < 126)) { + /* + 0 = nullable variable field of at most 255 bytes length; + 1 = not null variable field of at most 255 bytes length; + 126 = nullable variable field with maximum length >255; + 127 = not null variable field with maximum length >255 + */ + *buf++ = (byte) val; + } else { + *buf++ = (byte) (0x80 | val >> 8); + *buf++ = (byte) val; + } + + return(buf); +} + +/************************************************************************** +Write the index information for the compressed page. */ +static +ulint +page_zip_fields_encode( +/*===================*/ + /* out: used size of buf */ + ulint n, /* in: number of fields to compress */ + dict_index_t* index, /* in: index comprising at least n fields */ + ulint trx_id_pos,/* in: position of the trx_id column + in the index, or ULINT_UNDEFINED if + this is a non-leaf page */ + byte* buf) /* out: buffer of (n + 1) * 2 bytes */ +{ + const byte* buf_start = buf; + ulint i; + ulint col; + ulint trx_id_col = 0; + /* sum of lengths of preceding non-nullable fixed fields, or 0 */ + ulint fixed_sum = 0; + + ut_ad(trx_id_pos == ULINT_UNDEFINED || trx_id_pos < n); + + for (i = col = 0; i < n; i++) { + dict_field_t* field = dict_index_get_nth_field(index, i); + ulint val; + + if (dict_field_get_col(field)->prtype & DATA_NOT_NULL) { + val = 1; /* set the "not nullable" flag */ + } else { + val = 0; /* nullable field */ + } + + if (!field->fixed_len) { + /* variable-length field */ + const dict_col_t* column + = dict_field_get_col(field); + + if (UNIV_UNLIKELY(column->len > 255) + || UNIV_UNLIKELY(column->mtype == DATA_BLOB)) { + val |= 0x7e; /* max > 255 bytes */ + } + + if (fixed_sum) { + /* write out the length of any + preceding non-nullable fields */ + buf = page_zip_fixed_field_encode( + buf, fixed_sum << 1 | 1); + fixed_sum = 0; + col++; + } + + *buf++ = (byte) val; + col++; + } else if (val) { + /* fixed-length non-nullable field */ + + if (fixed_sum && UNIV_UNLIKELY + (fixed_sum + field->fixed_len + > DICT_MAX_INDEX_COL_LEN)) { + /* Write out the length of the + preceding non-nullable fields, + to avoid exceeding the maximum + length of a fixed-length column. */ + buf = page_zip_fixed_field_encode( + buf, fixed_sum << 1 | 1); + fixed_sum = 0; + col++; + } + + if (i && UNIV_UNLIKELY(i == trx_id_pos)) { + if (fixed_sum) { + /* Write out the length of any + preceding non-nullable fields, + and start a new trx_id column. */ + buf = page_zip_fixed_field_encode( + buf, fixed_sum << 1 | 1); + col++; + } + + trx_id_col = col; + fixed_sum = field->fixed_len; + } else { + /* add to the sum */ + fixed_sum += field->fixed_len; + } + } else { + /* fixed-length nullable field */ + + if (fixed_sum) { + /* write out the length of any + preceding non-nullable fields */ + buf = page_zip_fixed_field_encode( + buf, fixed_sum << 1 | 1); + fixed_sum = 0; + col++; + } + + buf = page_zip_fixed_field_encode( + buf, field->fixed_len << 1); + col++; + } + } + + if (fixed_sum) { + /* Write out the lengths of last fixed-length columns. */ + buf = page_zip_fixed_field_encode(buf, fixed_sum << 1 | 1); + } + + if (trx_id_pos != ULINT_UNDEFINED) { + /* Write out the position of the trx_id column */ + i = trx_id_col; + } else { + /* Write out the number of nullable fields */ + i = index->n_nullable; + } + + if (i < 128) { + *buf++ = (byte) i; + } else { + *buf++ = (byte) (0x80 | i >> 8); + *buf++ = (byte) i; + } + + ut_ad((ulint) (buf - buf_start) <= (n + 2) * 2); + return((ulint) (buf - buf_start)); +} + +/************************************************************************** +Populate the dense page directory from the sparse directory. */ +static +void +page_zip_dir_encode( +/*================*/ + const page_t* page, /* in: compact page */ + byte* buf, /* in: pointer to dense page directory[-1]; + out: dense directory on compressed page */ + const rec_t** recs) /* in: pointer to an array of 0, or NULL; + out: dense page directory sorted by ascending + address (and heap_no) */ +{ + const byte* rec; + ulint status; + ulint min_mark; + ulint heap_no; + ulint i; + ulint n_heap; + ulint offs; + + min_mark = 0; + + if (page_is_leaf(page)) { + status = REC_STATUS_ORDINARY; + } else { + status = REC_STATUS_NODE_PTR; + if (UNIV_UNLIKELY + (mach_read_from_4(page + FIL_PAGE_PREV) == FIL_NULL)) { + min_mark = REC_INFO_MIN_REC_FLAG; + } + } + + n_heap = page_dir_get_n_heap(page); + + /* Traverse the list of stored records in the collation order, + starting from the first user record. */ + + rec = page + PAGE_NEW_INFIMUM, TRUE; + + i = 0; + + for (;;) { + ulint info_bits; + offs = rec_get_next_offs(rec, TRUE); + if (UNIV_UNLIKELY(offs == PAGE_NEW_SUPREMUM)) { + break; + } + rec = page + offs; + heap_no = rec_get_heap_no_new(rec); + ut_a(heap_no >= PAGE_HEAP_NO_USER_LOW); + ut_a(heap_no < n_heap); + ut_a(offs < UNIV_PAGE_SIZE - PAGE_DIR); + ut_a(offs >= PAGE_ZIP_START); +#if PAGE_ZIP_DIR_SLOT_MASK & (PAGE_ZIP_DIR_SLOT_MASK + 1) +# error "PAGE_ZIP_DIR_SLOT_MASK is not 1 less than a power of 2" +#endif +#if PAGE_ZIP_DIR_SLOT_MASK < UNIV_PAGE_SIZE - 1 +# error "PAGE_ZIP_DIR_SLOT_MASK < UNIV_PAGE_SIZE - 1" +#endif + if (UNIV_UNLIKELY(rec_get_n_owned_new(rec))) { + offs |= PAGE_ZIP_DIR_SLOT_OWNED; + } + + info_bits = rec_get_info_bits(rec, TRUE); + if (UNIV_UNLIKELY(info_bits & REC_INFO_DELETED_FLAG)) { + info_bits &= ~REC_INFO_DELETED_FLAG; + offs |= PAGE_ZIP_DIR_SLOT_DEL; + } + ut_a(info_bits == min_mark); + /* Only the smallest user record can have + REC_INFO_MIN_REC_FLAG set. */ + min_mark = 0; + + mach_write_to_2(buf - PAGE_ZIP_DIR_SLOT_SIZE * ++i, offs); + + if (UNIV_LIKELY_NULL(recs)) { + /* Ensure that each heap_no occurs at most once. */ + ut_a(!recs[heap_no - PAGE_HEAP_NO_USER_LOW]); + /* exclude infimum and supremum */ + recs[heap_no - PAGE_HEAP_NO_USER_LOW] = rec; + } + + ut_a(rec_get_status(rec) == status); + } + + offs = page_header_get_field(page, PAGE_FREE); + + /* Traverse the free list (of deleted records). */ + while (offs) { + ut_ad(!(offs & ~PAGE_ZIP_DIR_SLOT_MASK)); + rec = page + offs; + + heap_no = rec_get_heap_no_new(rec); + ut_a(heap_no >= PAGE_HEAP_NO_USER_LOW); + ut_a(heap_no < n_heap); + + ut_a(!rec[-REC_N_NEW_EXTRA_BYTES]); /* info_bits and n_owned */ + ut_a(rec_get_status(rec) == status); + + mach_write_to_2(buf - PAGE_ZIP_DIR_SLOT_SIZE * ++i, offs); + + if (UNIV_LIKELY_NULL(recs)) { + /* Ensure that each heap_no occurs at most once. */ + ut_a(!recs[heap_no - PAGE_HEAP_NO_USER_LOW]); + /* exclude infimum and supremum */ + recs[heap_no - PAGE_HEAP_NO_USER_LOW] = rec; + } + + offs = rec_get_next_offs(rec, TRUE); + } + + /* Ensure that each heap no occurs at least once. */ + ut_a(i + PAGE_HEAP_NO_USER_LOW == n_heap); +} + +/************************************************************************** +Allocate memory for zlib. */ +static +void* +page_zip_malloc( +/*============*/ + void* opaque, + uInt items, + uInt size) +{ + return(mem_heap_alloc(opaque, items * size)); +} + +/************************************************************************** +Deallocate memory for zlib. */ +static +void +page_zip_free( +/*==========*/ + void* opaque __attribute__((unused)), + void* address __attribute__((unused))) +{ +} + +/************************************************************************** +Configure the zlib allocator to use the given memory heap. */ +UNIV_INTERN +void +page_zip_set_alloc( +/*===============*/ + void* stream, /* in/out: zlib stream */ + mem_heap_t* heap) /* in: memory heap to use */ +{ + z_stream* strm = stream; + + strm->zalloc = page_zip_malloc; + strm->zfree = page_zip_free; + strm->opaque = heap; +} + +#if 0 || defined UNIV_DEBUG || defined UNIV_ZIP_DEBUG +# define PAGE_ZIP_COMPRESS_DBG +#endif + +#ifdef PAGE_ZIP_COMPRESS_DBG +/* Set this variable in a debugger to enable +excessive logging in page_zip_compress(). */ +UNIV_INTERN ibool page_zip_compress_dbg; +/* Set this variable in a debugger to enable +binary logging of the data passed to deflate(). +When this variable is nonzero, it will act +as a log file name generator. */ +UNIV_INTERN unsigned page_zip_compress_log; + +/************************************************************************** +Wrapper for deflate(). Log the operation if page_zip_compress_dbg is set. */ +static +ibool +page_zip_compress_deflate( +/*======================*/ + FILE* logfile,/* in: log file, or NULL */ + z_streamp strm, /* in/out: compressed stream for deflate() */ + int flush) /* in: deflate() flushing method */ +{ + int status; + if (UNIV_UNLIKELY(page_zip_compress_dbg)) { + ut_print_buf(stderr, strm->next_in, strm->avail_in); + } + if (UNIV_LIKELY_NULL(logfile)) { + fwrite(strm->next_in, 1, strm->avail_in, logfile); + } + status = deflate(strm, flush); + if (UNIV_UNLIKELY(page_zip_compress_dbg)) { + fprintf(stderr, " -> %d\n", status); + } + return(status); +} + +/* Redefine deflate(). */ +# undef deflate +# define deflate(strm, flush) page_zip_compress_deflate(logfile, strm, flush) +# define FILE_LOGFILE FILE* logfile, +# define LOGFILE logfile, +#else /* PAGE_ZIP_COMPRESS_DBG */ +# define FILE_LOGFILE +# define LOGFILE +#endif /* PAGE_ZIP_COMPRESS_DBG */ + +/************************************************************************** +Compress the records of a node pointer page. */ +static +int +page_zip_compress_node_ptrs( +/*========================*/ + /* out: Z_OK, or a zlib error code */ + FILE_LOGFILE + z_stream* c_stream, /* in/out: compressed page stream */ + const rec_t** recs, /* in: dense page directory + sorted by address */ + ulint n_dense, /* in: size of recs[] */ + dict_index_t* index, /* in: the index of the page */ + byte* storage, /* in: end of dense page directory */ + mem_heap_t* heap) /* in: temporary memory heap */ +{ + int err = Z_OK; + ulint* offsets = NULL; + + do { + const rec_t* rec = *recs++; + + offsets = rec_get_offsets(rec, index, offsets, + ULINT_UNDEFINED, &heap); + /* Only leaf nodes may contain externally stored columns. */ + ut_ad(!rec_offs_any_extern(offsets)); + + UNIV_MEM_ASSERT_RW(rec, rec_offs_data_size(offsets)); + UNIV_MEM_ASSERT_RW(rec - rec_offs_extra_size(offsets), + rec_offs_extra_size(offsets)); + + /* Compress the extra bytes. */ + c_stream->avail_in = rec - REC_N_NEW_EXTRA_BYTES + - c_stream->next_in; + + if (c_stream->avail_in) { + err = deflate(c_stream, Z_NO_FLUSH); + if (UNIV_UNLIKELY(err != Z_OK)) { + break; + } + } + ut_ad(!c_stream->avail_in); + + /* Compress the data bytes, except node_ptr. */ + c_stream->next_in = (byte*) rec; + c_stream->avail_in = rec_offs_data_size(offsets) + - REC_NODE_PTR_SIZE; + ut_ad(c_stream->avail_in); + + err = deflate(c_stream, Z_NO_FLUSH); + if (UNIV_UNLIKELY(err != Z_OK)) { + break; + } + + ut_ad(!c_stream->avail_in); + + memcpy(storage - REC_NODE_PTR_SIZE + * (rec_get_heap_no_new(rec) - 1), + c_stream->next_in, REC_NODE_PTR_SIZE); + c_stream->next_in += REC_NODE_PTR_SIZE; + } while (--n_dense); + + return(err); +} + +/************************************************************************** +Compress the records of a leaf node of a secondary index. */ +static +int +page_zip_compress_sec( +/*==================*/ + /* out: Z_OK, or a zlib error code */ + FILE_LOGFILE + z_stream* c_stream, /* in/out: compressed page stream */ + const rec_t** recs, /* in: dense page directory + sorted by address */ + ulint n_dense) /* in: size of recs[] */ +{ + int err = Z_OK; + + ut_ad(n_dense > 0); + + do { + const rec_t* rec = *recs++; + + /* Compress everything up to this record. */ + c_stream->avail_in = rec - REC_N_NEW_EXTRA_BYTES + - c_stream->next_in; + + if (UNIV_LIKELY(c_stream->avail_in)) { + UNIV_MEM_ASSERT_RW(c_stream->next_in, + c_stream->avail_in); + err = deflate(c_stream, Z_NO_FLUSH); + if (UNIV_UNLIKELY(err != Z_OK)) { + break; + } + } + + ut_ad(!c_stream->avail_in); + ut_ad(c_stream->next_in == rec - REC_N_NEW_EXTRA_BYTES); + + /* Skip the REC_N_NEW_EXTRA_BYTES. */ + + c_stream->next_in = (byte*) rec; + } while (--n_dense); + + return(err); +} + +/************************************************************************** +Compress a record of a leaf node of a clustered index that contains +externally stored columns. */ +static +int +page_zip_compress_clust_ext( +/*========================*/ + /* out: Z_OK, or a zlib error code */ + FILE_LOGFILE + z_stream* c_stream, /* in/out: compressed page stream */ + const rec_t* rec, /* in: record */ + const ulint* offsets, /* in: rec_get_offsets(rec) */ + ulint trx_id_col, /* in: position of of DB_TRX_ID */ + byte* deleted, /* in: dense directory entry pointing + to the head of the free list */ + byte* storage, /* in: end of dense page directory */ + byte** externs, /* in/out: pointer to the next + available BLOB pointer */ + ulint* n_blobs) /* in/out: number of + externally stored columns */ +{ + int err; + ulint i; + + UNIV_MEM_ASSERT_RW(rec, rec_offs_data_size(offsets)); + UNIV_MEM_ASSERT_RW(rec - rec_offs_extra_size(offsets), + rec_offs_extra_size(offsets)); + + for (i = 0; i < rec_offs_n_fields(offsets); i++) { + ulint len; + const byte* src; + + if (UNIV_UNLIKELY(i == trx_id_col)) { + ut_ad(!rec_offs_nth_extern(offsets, i)); + /* Store trx_id and roll_ptr + in uncompressed form. */ + src = rec_get_nth_field(rec, offsets, i, &len); + ut_ad(src + DATA_TRX_ID_LEN + == rec_get_nth_field(rec, offsets, + i + 1, &len)); + ut_ad(len == DATA_ROLL_PTR_LEN); + + /* Compress any preceding bytes. */ + c_stream->avail_in + = src - c_stream->next_in; + + if (c_stream->avail_in) { + err = deflate(c_stream, Z_NO_FLUSH); + if (UNIV_UNLIKELY(err != Z_OK)) { + + return(err); + } + } + + ut_ad(!c_stream->avail_in); + ut_ad(c_stream->next_in == src); + + memcpy(storage + - (DATA_TRX_ID_LEN + DATA_ROLL_PTR_LEN) + * (rec_get_heap_no_new(rec) - 1), + c_stream->next_in, + DATA_TRX_ID_LEN + DATA_ROLL_PTR_LEN); + + c_stream->next_in + += DATA_TRX_ID_LEN + DATA_ROLL_PTR_LEN; + + /* Skip also roll_ptr */ + i++; + } else if (rec_offs_nth_extern(offsets, i)) { + src = rec_get_nth_field(rec, offsets, i, &len); + ut_ad(len >= BTR_EXTERN_FIELD_REF_SIZE); + src += len - BTR_EXTERN_FIELD_REF_SIZE; + + c_stream->avail_in = src + - c_stream->next_in; + if (UNIV_LIKELY(c_stream->avail_in)) { + err = deflate(c_stream, Z_NO_FLUSH); + if (UNIV_UNLIKELY(err != Z_OK)) { + + return(err); + } + } + + ut_ad(!c_stream->avail_in); + ut_ad(c_stream->next_in == src); + + /* Reserve space for the data at + the end of the space reserved for + the compressed data and the page + modification log. */ + + if (UNIV_UNLIKELY + (c_stream->avail_out + <= BTR_EXTERN_FIELD_REF_SIZE)) { + /* out of space */ + return(Z_BUF_ERROR); + } + + ut_ad(*externs == c_stream->next_out + + c_stream->avail_out + + 1/* end of modif. log */); + + c_stream->next_in + += BTR_EXTERN_FIELD_REF_SIZE; + + /* Skip deleted records. */ + if (UNIV_LIKELY_NULL + (page_zip_dir_find_low( + storage, deleted, + page_offset(rec)))) { + continue; + } + + (*n_blobs)++; + c_stream->avail_out + -= BTR_EXTERN_FIELD_REF_SIZE; + *externs -= BTR_EXTERN_FIELD_REF_SIZE; + + /* Copy the BLOB pointer */ + memcpy(*externs, c_stream->next_in + - BTR_EXTERN_FIELD_REF_SIZE, + BTR_EXTERN_FIELD_REF_SIZE); + } + } + + return(Z_OK); +} + +/************************************************************************** +Compress the records of a leaf node of a clustered index. */ +static +int +page_zip_compress_clust( +/*====================*/ + /* out: Z_OK, or a zlib error code */ + FILE_LOGFILE + z_stream* c_stream, /* in/out: compressed page stream */ + const rec_t** recs, /* in: dense page directory + sorted by address */ + ulint n_dense, /* in: size of recs[] */ + dict_index_t* index, /* in: the index of the page */ + ulint* n_blobs, /* in: 0; out: number of + externally stored columns */ + ulint trx_id_col, /* index of the trx_id column */ + byte* deleted, /* in: dense directory entry pointing + to the head of the free list */ + byte* storage, /* in: end of dense page directory */ + mem_heap_t* heap) /* in: temporary memory heap */ +{ + int err = Z_OK; + ulint* offsets = NULL; + /* BTR_EXTERN_FIELD_REF storage */ + byte* externs = storage - n_dense + * (DATA_TRX_ID_LEN + DATA_ROLL_PTR_LEN); + + ut_ad(*n_blobs == 0); + + do { + const rec_t* rec = *recs++; + + offsets = rec_get_offsets(rec, index, offsets, + ULINT_UNDEFINED, &heap); + ut_ad(rec_offs_n_fields(offsets) + == dict_index_get_n_fields(index)); + UNIV_MEM_ASSERT_RW(rec, rec_offs_data_size(offsets)); + UNIV_MEM_ASSERT_RW(rec - rec_offs_extra_size(offsets), + rec_offs_extra_size(offsets)); + + /* Compress the extra bytes. */ + c_stream->avail_in = rec - REC_N_NEW_EXTRA_BYTES + - c_stream->next_in; + + if (c_stream->avail_in) { + err = deflate(c_stream, Z_NO_FLUSH); + if (UNIV_UNLIKELY(err != Z_OK)) { + + goto func_exit; + } + } + ut_ad(!c_stream->avail_in); + ut_ad(c_stream->next_in == rec - REC_N_NEW_EXTRA_BYTES); + + /* Compress the data bytes. */ + + c_stream->next_in = (byte*) rec; + + /* Check if there are any externally stored columns. + For each externally stored column, store the + BTR_EXTERN_FIELD_REF separately. */ + if (UNIV_UNLIKELY(rec_offs_any_extern(offsets))) { + ut_ad(dict_index_is_clust(index)); + + err = page_zip_compress_clust_ext( + LOGFILE + c_stream, rec, offsets, trx_id_col, + deleted, storage, &externs, n_blobs); + + if (UNIV_UNLIKELY(err != Z_OK)) { + + goto func_exit; + } + } else { + ulint len; + const byte* src; + + /* Store trx_id and roll_ptr in uncompressed form. */ + src = rec_get_nth_field(rec, offsets, + trx_id_col, &len); + ut_ad(src + DATA_TRX_ID_LEN + == rec_get_nth_field(rec, offsets, + trx_id_col + 1, &len)); + ut_ad(len == DATA_ROLL_PTR_LEN); + UNIV_MEM_ASSERT_RW(rec, rec_offs_data_size(offsets)); + UNIV_MEM_ASSERT_RW(rec - rec_offs_extra_size(offsets), + rec_offs_extra_size(offsets)); + + /* Compress any preceding bytes. */ + c_stream->avail_in = src - c_stream->next_in; + + if (c_stream->avail_in) { + err = deflate(c_stream, Z_NO_FLUSH); + if (UNIV_UNLIKELY(err != Z_OK)) { + + return(err); + } + } + + ut_ad(!c_stream->avail_in); + ut_ad(c_stream->next_in == src); + + memcpy(storage + - (DATA_TRX_ID_LEN + DATA_ROLL_PTR_LEN) + * (rec_get_heap_no_new(rec) - 1), + c_stream->next_in, + DATA_TRX_ID_LEN + DATA_ROLL_PTR_LEN); + + c_stream->next_in + += DATA_TRX_ID_LEN + DATA_ROLL_PTR_LEN; + + /* Skip also roll_ptr */ + ut_ad(trx_id_col + 1 < rec_offs_n_fields(offsets)); + } + + /* Compress the last bytes of the record. */ + c_stream->avail_in = rec + rec_offs_data_size(offsets) + - c_stream->next_in; + + if (c_stream->avail_in) { + err = deflate(c_stream, Z_NO_FLUSH); + if (UNIV_UNLIKELY(err != Z_OK)) { + + goto func_exit; + } + } + ut_ad(!c_stream->avail_in); + } while (--n_dense); + +func_exit: + return(err); +} + +/************************************************************************** +Compress a page. */ +UNIV_INTERN +ibool +page_zip_compress( +/*==============*/ + /* out: TRUE on success, FALSE on failure; + page_zip will be left intact on failure. */ + page_zip_des_t* page_zip,/* in: size; out: data, n_blobs, + m_start, m_end, m_nonempty */ + const page_t* page, /* in: uncompressed page */ + dict_index_t* index, /* in: index of the B-tree node */ + mtr_t* mtr) /* in: mini-transaction, or NULL */ +{ + z_stream c_stream; + int err; + ulint n_fields;/* number of index fields needed */ + byte* fields; /* index field information */ + byte* buf; /* compressed payload of the page */ + byte* buf_end;/* end of buf */ + ulint n_dense; + ulint slot_size;/* amount of uncompressed bytes per record */ + const rec_t** recs; /* dense page directory, sorted by address */ + mem_heap_t* heap; + ulint trx_id_col; + ulint* offsets = NULL; + ulint n_blobs = 0; + byte* storage;/* storage of uncompressed columns */ + ullint usec = ut_time_us(NULL); +#ifdef PAGE_ZIP_COMPRESS_DBG + FILE* logfile = NULL; +#endif + + ut_a(page_is_comp(page)); + ut_a(fil_page_get_type(page) == FIL_PAGE_INDEX); + ut_ad(page_simple_validate_new((page_t*) page)); + ut_ad(page_zip_simple_validate(page_zip)); + + UNIV_MEM_ASSERT_RW(page, UNIV_PAGE_SIZE); + + /* Check the data that will be omitted. */ + ut_a(!memcmp(page + (PAGE_NEW_INFIMUM - REC_N_NEW_EXTRA_BYTES), + infimum_extra, sizeof infimum_extra)); + ut_a(!memcmp(page + PAGE_NEW_INFIMUM, + infimum_data, sizeof infimum_data)); + ut_a(page[PAGE_NEW_SUPREMUM - REC_N_NEW_EXTRA_BYTES] + /* info_bits == 0, n_owned <= max */ + <= PAGE_DIR_SLOT_MAX_N_OWNED); + ut_a(!memcmp(page + (PAGE_NEW_SUPREMUM - REC_N_NEW_EXTRA_BYTES + 1), + supremum_extra_data, sizeof supremum_extra_data)); + + if (UNIV_UNLIKELY(!page_get_n_recs(page))) { + ut_a(rec_get_next_offs(page + PAGE_NEW_INFIMUM, TRUE) + == PAGE_NEW_SUPREMUM); + } + + if (page_is_leaf(page)) { + n_fields = dict_index_get_n_fields(index); + } else { + n_fields = dict_index_get_n_unique_in_tree(index); + } + + /* The dense directory excludes the infimum and supremum records. */ + n_dense = page_dir_get_n_heap(page) - PAGE_HEAP_NO_USER_LOW; +#ifdef PAGE_ZIP_COMPRESS_DBG + if (UNIV_UNLIKELY(page_zip_compress_dbg)) { + fprintf(stderr, "compress %p %p %lu %lu %lu\n", + (void*) page_zip, (void*) page, + page_is_leaf(page), + n_fields, n_dense); + } + if (UNIV_UNLIKELY(page_zip_compress_log)) { + /* Create a log file for every compression attempt. */ + char logfilename[9]; + ut_snprintf(logfilename, sizeof logfilename, + "%08x", page_zip_compress_log++); + logfile = fopen(logfilename, "wb"); + + if (logfile) { + /* Write the uncompressed page to the log. */ + fwrite(page, 1, UNIV_PAGE_SIZE, logfile); + /* Record the compressed size as zero. + This will be overwritten at successful exit. */ + putc(0, logfile); + putc(0, logfile); + putc(0, logfile); + putc(0, logfile); + } + } +#endif /* PAGE_ZIP_COMPRESS_DBG */ + page_zip_stat[page_zip->ssize - 1].compressed++; + + if (UNIV_UNLIKELY(n_dense * PAGE_ZIP_DIR_SLOT_SIZE + >= page_zip_get_size(page_zip))) { + + goto err_exit; + } + + heap = mem_heap_create(page_zip_get_size(page_zip) + + n_fields * (2 + sizeof *offsets) + + n_dense * ((sizeof *recs) + - PAGE_ZIP_DIR_SLOT_SIZE) + + UNIV_PAGE_SIZE * 4 + + (512 << MAX_MEM_LEVEL)); + + recs = mem_heap_zalloc(heap, n_dense * sizeof *recs); + + fields = mem_heap_alloc(heap, (n_fields + 1) * 2); + + buf = mem_heap_alloc(heap, page_zip_get_size(page_zip) - PAGE_DATA); + buf_end = buf + page_zip_get_size(page_zip) - PAGE_DATA; + + /* Compress the data payload. */ + page_zip_set_alloc(&c_stream, heap); + + err = deflateInit2(&c_stream, Z_DEFAULT_COMPRESSION, + Z_DEFLATED, UNIV_PAGE_SIZE_SHIFT, + MAX_MEM_LEVEL, Z_DEFAULT_STRATEGY); + ut_a(err == Z_OK); + + c_stream.next_out = buf; + /* Subtract the space reserved for uncompressed data. */ + /* Page header and the end marker of the modification log */ + c_stream.avail_out = buf_end - buf - 1; + /* Dense page directory and uncompressed columns, if any */ + if (page_is_leaf(page)) { + if (dict_index_is_clust(index)) { + trx_id_col = dict_index_get_sys_col_pos( + index, DATA_TRX_ID); + ut_ad(trx_id_col > 0); + ut_ad(trx_id_col != ULINT_UNDEFINED); + + slot_size = PAGE_ZIP_DIR_SLOT_SIZE + + DATA_TRX_ID_LEN + DATA_ROLL_PTR_LEN; + } else { + /* Signal the absence of trx_id + in page_zip_fields_encode() */ + ut_ad(dict_index_get_sys_col_pos(index, DATA_TRX_ID) + == ULINT_UNDEFINED); + trx_id_col = 0; + slot_size = PAGE_ZIP_DIR_SLOT_SIZE; + } + } else { + slot_size = PAGE_ZIP_DIR_SLOT_SIZE + REC_NODE_PTR_SIZE; + trx_id_col = ULINT_UNDEFINED; + } + + if (UNIV_UNLIKELY(c_stream.avail_out <= n_dense * slot_size + + 6/* sizeof(zlib header and footer) */)) { + goto zlib_error; + } + + c_stream.avail_out -= n_dense * slot_size; + c_stream.avail_in = page_zip_fields_encode(n_fields, index, + trx_id_col, fields); + c_stream.next_in = fields; + if (UNIV_LIKELY(!trx_id_col)) { + trx_id_col = ULINT_UNDEFINED; + } + + UNIV_MEM_ASSERT_RW(c_stream.next_in, c_stream.avail_in); + err = deflate(&c_stream, Z_FULL_FLUSH); + if (err != Z_OK) { + goto zlib_error; + } + + ut_ad(!c_stream.avail_in); + + page_zip_dir_encode(page, buf_end, recs); + + c_stream.next_in = (byte*) page + PAGE_ZIP_START; + + storage = buf_end - n_dense * PAGE_ZIP_DIR_SLOT_SIZE; + + /* Compress the records in heap_no order. */ + if (UNIV_UNLIKELY(!n_dense)) { + } else if (!page_is_leaf(page)) { + /* This is a node pointer page. */ + err = page_zip_compress_node_ptrs(LOGFILE + &c_stream, recs, n_dense, + index, storage, heap); + if (UNIV_UNLIKELY(err != Z_OK)) { + goto zlib_error; + } + } else if (UNIV_LIKELY(trx_id_col == ULINT_UNDEFINED)) { + /* This is a leaf page in a secondary index. */ + err = page_zip_compress_sec(LOGFILE + &c_stream, recs, n_dense); + if (UNIV_UNLIKELY(err != Z_OK)) { + goto zlib_error; + } + } else { + /* This is a leaf page in a clustered index. */ + err = page_zip_compress_clust(LOGFILE + &c_stream, recs, n_dense, + index, &n_blobs, trx_id_col, + buf_end - PAGE_ZIP_DIR_SLOT_SIZE + * page_get_n_recs(page), + storage, heap); + if (UNIV_UNLIKELY(err != Z_OK)) { + goto zlib_error; + } + } + + /* Finish the compression. */ + ut_ad(!c_stream.avail_in); + /* Compress any trailing garbage, in case the last record was + allocated from an originally longer space on the free list, + or the data of the last record from page_zip_compress_sec(). */ + c_stream.avail_in + = page_header_get_field(page, PAGE_HEAP_TOP) + - (c_stream.next_in - page); + ut_a(c_stream.avail_in <= UNIV_PAGE_SIZE - PAGE_ZIP_START - PAGE_DIR); + + UNIV_MEM_ASSERT_RW(c_stream.next_in, c_stream.avail_in); + err = deflate(&c_stream, Z_FINISH); + + if (UNIV_UNLIKELY(err != Z_STREAM_END)) { +zlib_error: + deflateEnd(&c_stream); + mem_heap_free(heap); +err_exit: +#ifdef PAGE_ZIP_COMPRESS_DBG + if (logfile) { + fclose(logfile); + } +#endif /* PAGE_ZIP_COMPRESS_DBG */ + page_zip_stat[page_zip->ssize - 1].compressed_usec + += ut_time_us(NULL) - usec; + return(FALSE); + } + + err = deflateEnd(&c_stream); + ut_a(err == Z_OK); + + ut_ad(buf + c_stream.total_out == c_stream.next_out); + ut_ad((ulint) (storage - c_stream.next_out) >= c_stream.avail_out); + + /* Valgrind believes that zlib does not initialize some bits + in the last 7 or 8 bytes of the stream. Make Valgrind happy. */ + UNIV_MEM_VALID(buf, c_stream.total_out); + + /* Zero out the area reserved for the modification log. + Space for the end marker of the modification log is not + included in avail_out. */ + memset(c_stream.next_out, 0, c_stream.avail_out + 1/* end marker */); + +#ifdef UNIV_DEBUG + page_zip->m_start = +#endif /* UNIV_DEBUG */ + page_zip->m_end = PAGE_DATA + c_stream.total_out; + page_zip->m_nonempty = FALSE; + page_zip->n_blobs = n_blobs; + /* Copy those header fields that will not be written + in buf_flush_init_for_writing() */ + memcpy(page_zip->data + FIL_PAGE_PREV, page + FIL_PAGE_PREV, + FIL_PAGE_LSN - FIL_PAGE_PREV); + memcpy(page_zip->data + FIL_PAGE_TYPE, page + FIL_PAGE_TYPE, 2); + memcpy(page_zip->data + FIL_PAGE_DATA, page + FIL_PAGE_DATA, + PAGE_DATA - FIL_PAGE_DATA); + /* Copy the rest of the compressed page */ + memcpy(page_zip->data + PAGE_DATA, buf, + page_zip_get_size(page_zip) - PAGE_DATA); + mem_heap_free(heap); +#ifdef UNIV_ZIP_DEBUG + ut_a(page_zip_validate(page_zip, page)); +#endif /* UNIV_ZIP_DEBUG */ + + if (mtr) { + page_zip_compress_write_log(page_zip, page, index, mtr); + } + + UNIV_MEM_ASSERT_RW(page_zip->data, page_zip_get_size(page_zip)); + +#ifdef PAGE_ZIP_COMPRESS_DBG + if (logfile) { + /* Record the compressed size of the block. */ + byte sz[4]; + mach_write_to_4(sz, c_stream.total_out); + fseek(logfile, UNIV_PAGE_SIZE, SEEK_SET); + fwrite(sz, 1, sizeof sz, logfile); + fclose(logfile); + } +#endif /* PAGE_ZIP_COMPRESS_DBG */ + { + page_zip_stat_t* zip_stat + = &page_zip_stat[page_zip->ssize - 1]; + zip_stat->compressed_ok++; + zip_stat->compressed_usec += ut_time_us(NULL) - usec; + } + + return(TRUE); +} + +/************************************************************************** +Compare two page directory entries. */ +UNIV_INLINE +ibool +page_zip_dir_cmp( +/*=============*/ + /* out: positive if rec1 > rec2 */ + const rec_t* rec1, /* in: rec1 */ + const rec_t* rec2) /* in: rec2 */ +{ + return(rec1 > rec2); +} + +/************************************************************************** +Sort the dense page directory by address (heap_no). */ +static +void +page_zip_dir_sort( +/*==============*/ + rec_t** arr, /* in/out: dense page directory */ + rec_t** aux_arr,/* in/out: work area */ + ulint low, /* in: lower bound of the sorting area, inclusive */ + ulint high) /* in: upper bound of the sorting area, exclusive */ +{ + UT_SORT_FUNCTION_BODY(page_zip_dir_sort, arr, aux_arr, low, high, + page_zip_dir_cmp); +} + +/************************************************************************** +Deallocate the index information initialized by page_zip_fields_decode(). */ +static +void +page_zip_fields_free( +/*=================*/ + dict_index_t* index) /* in: dummy index to be freed */ +{ + if (index) { + dict_table_t* table = index->table; + mem_heap_free(index->heap); + mutex_free(&(table->autoinc_mutex)); + mem_heap_free(table->heap); + } +} + +/************************************************************************** +Read the index information for the compressed page. */ +static +dict_index_t* +page_zip_fields_decode( +/*===================*/ + /* out,own: dummy index describing the page, + or NULL on error */ + const byte* buf, /* in: index information */ + const byte* end, /* in: end of buf */ + ulint* trx_id_col)/* in: NULL for non-leaf pages; + for leaf pages, pointer to where to store + the position of the trx_id column */ +{ + const byte* b; + ulint n; + ulint i; + ulint val; + dict_table_t* table; + dict_index_t* index; + + /* Determine the number of fields. */ + for (b = buf, n = 0; b < end; n++) { + if (*b++ & 0x80) { + b++; /* skip the second byte */ + } + } + + n--; /* n_nullable or trx_id */ + + if (UNIV_UNLIKELY(n > REC_MAX_N_FIELDS)) { + + page_zip_fail(("page_zip_fields_decode: n = %lu\n", + (ulong) n)); + return(NULL); + } + + if (UNIV_UNLIKELY(b > end)) { + + page_zip_fail(("page_zip_fields_decode: %p > %p\n", + (const void*) b, (const void*) end)); + return(NULL); + } + + table = dict_mem_table_create("ZIP_DUMMY", DICT_HDR_SPACE, n, + DICT_TF_COMPACT); + index = dict_mem_index_create("ZIP_DUMMY", "ZIP_DUMMY", + DICT_HDR_SPACE, 0, n); + index->table = table; + index->n_uniq = n; + /* avoid ut_ad(index->cached) in dict_index_get_n_unique_in_tree */ + index->cached = TRUE; + + /* Initialize the fields. */ + for (b = buf, i = 0; i < n; i++) { + ulint mtype; + ulint len; + + val = *b++; + + if (UNIV_UNLIKELY(val & 0x80)) { + /* fixed length > 62 bytes */ + val = (val & 0x7f) << 8 | *b++; + len = val >> 1; + mtype = DATA_FIXBINARY; + } else if (UNIV_UNLIKELY(val >= 126)) { + /* variable length with max > 255 bytes */ + len = 0x7fff; + mtype = DATA_BINARY; + } else if (val <= 1) { + /* variable length with max <= 255 bytes */ + len = 0; + mtype = DATA_BINARY; + } else { + /* fixed length < 62 bytes */ + len = val >> 1; + mtype = DATA_FIXBINARY; + } + + dict_mem_table_add_col(table, NULL, NULL, mtype, + val & 1 ? DATA_NOT_NULL : 0, len); + dict_index_add_col(index, table, + dict_table_get_nth_col(table, i), 0); + } + + val = *b++; + if (UNIV_UNLIKELY(val & 0x80)) { + val = (val & 0x7f) << 8 | *b++; + } + + /* Decode the position of the trx_id column. */ + if (trx_id_col) { + if (!val) { + val = ULINT_UNDEFINED; + } else if (UNIV_UNLIKELY(val >= n)) { + page_zip_fields_free(index); + index = NULL; + } else { + index->type = DICT_CLUSTERED; + } + + *trx_id_col = val; + } else { + /* Decode the number of nullable fields. */ + if (UNIV_UNLIKELY(index->n_nullable > val)) { + page_zip_fields_free(index); + index = NULL; + } else { + index->n_nullable = val; + } + } + + ut_ad(b == end); + + return(index); +} + +/************************************************************************** +Populate the sparse page directory from the dense directory. */ +static +ibool +page_zip_dir_decode( +/*================*/ + /* out: TRUE on success, + FALSE on failure */ + const page_zip_des_t* page_zip,/* in: dense page directory on + compressed page */ + page_t* page, /* in: compact page with valid header; + out: trailer and sparse page directory + filled in */ + rec_t** recs, /* out: dense page directory sorted by + ascending address (and heap_no) */ + rec_t** recs_aux,/* in/out: scratch area */ + ulint n_dense)/* in: number of user records, and + size of recs[] and recs_aux[] */ +{ + ulint i; + ulint n_recs; + byte* slot; + + n_recs = page_get_n_recs(page); + + if (UNIV_UNLIKELY(n_recs > n_dense)) { + page_zip_fail(("page_zip_dir_decode 1: %lu > %lu\n", + (ulong) n_recs, (ulong) n_dense)); + return(FALSE); + } + + /* Traverse the list of stored records in the sorting order, + starting from the first user record. */ + + slot = page + (UNIV_PAGE_SIZE - PAGE_DIR - PAGE_DIR_SLOT_SIZE); + UNIV_PREFETCH_RW(slot); + + /* Zero out the page trailer. */ + memset(slot + PAGE_DIR_SLOT_SIZE, 0, PAGE_DIR); + + mach_write_to_2(slot, PAGE_NEW_INFIMUM); + slot -= PAGE_DIR_SLOT_SIZE; + UNIV_PREFETCH_RW(slot); + + /* Initialize the sparse directory and copy the dense directory. */ + for (i = 0; i < n_recs; i++) { + ulint offs = page_zip_dir_get(page_zip, i); + + if (offs & PAGE_ZIP_DIR_SLOT_OWNED) { + mach_write_to_2(slot, offs & PAGE_ZIP_DIR_SLOT_MASK); + slot -= PAGE_DIR_SLOT_SIZE; + UNIV_PREFETCH_RW(slot); + } + + if (UNIV_UNLIKELY((offs & PAGE_ZIP_DIR_SLOT_MASK) + < PAGE_ZIP_START + REC_N_NEW_EXTRA_BYTES)) { + page_zip_fail(("page_zip_dir_decode 2: %u %u %lx\n", + (unsigned) i, (unsigned) n_recs, + (ulong) offs)); + return(FALSE); + } + + recs[i] = page + (offs & PAGE_ZIP_DIR_SLOT_MASK); + } + + mach_write_to_2(slot, PAGE_NEW_SUPREMUM); + { + const page_dir_slot_t* last_slot = page_dir_get_nth_slot( + page, page_dir_get_n_slots(page) - 1); + + if (UNIV_UNLIKELY(slot != last_slot)) { + page_zip_fail(("page_zip_dir_decode 3: %p != %p\n", + (const void*) slot, + (const void*) last_slot)); + return(FALSE); + } + } + + /* Copy the rest of the dense directory. */ + for (; i < n_dense; i++) { + ulint offs = page_zip_dir_get(page_zip, i); + + if (UNIV_UNLIKELY(offs & ~PAGE_ZIP_DIR_SLOT_MASK)) { + page_zip_fail(("page_zip_dir_decode 4: %u %u %lx\n", + (unsigned) i, (unsigned) n_dense, + (ulong) offs)); + return(FALSE); + } + + recs[i] = page + offs; + } + + if (UNIV_LIKELY(n_dense > 1)) { + page_zip_dir_sort(recs, recs_aux, 0, n_dense); + } + return(TRUE); +} + +/************************************************************************** +Initialize the REC_N_NEW_EXTRA_BYTES of each record. */ +static +ibool +page_zip_set_extra_bytes( +/*=====================*/ + /* out: TRUE on success, + FALSE on failure */ + const page_zip_des_t* page_zip,/* in: compressed page */ + page_t* page, /* in/out: uncompressed page */ + ulint info_bits)/* in: REC_INFO_MIN_REC_FLAG or 0 */ +{ + ulint n; + ulint i; + ulint n_owned = 1; + ulint offs; + rec_t* rec; + + n = page_get_n_recs(page); + rec = page + PAGE_NEW_INFIMUM; + + for (i = 0; i < n; i++) { + offs = page_zip_dir_get(page_zip, i); + + if (UNIV_UNLIKELY(offs & PAGE_ZIP_DIR_SLOT_DEL)) { + info_bits |= REC_INFO_DELETED_FLAG; + } + if (UNIV_UNLIKELY(offs & PAGE_ZIP_DIR_SLOT_OWNED)) { + info_bits |= n_owned; + n_owned = 1; + } else { + n_owned++; + } + offs &= PAGE_ZIP_DIR_SLOT_MASK; + if (UNIV_UNLIKELY(offs < PAGE_ZIP_START + + REC_N_NEW_EXTRA_BYTES)) { + page_zip_fail(("page_zip_set_extra_bytes 1:" + " %u %u %lx\n", + (unsigned) i, (unsigned) n, + (ulong) offs)); + return(FALSE); + } + + rec_set_next_offs_new(rec, offs); + rec = page + offs; + rec[-REC_N_NEW_EXTRA_BYTES] = (byte) info_bits; + info_bits = 0; + } + + /* Set the next pointer of the last user record. */ + rec_set_next_offs_new(rec, PAGE_NEW_SUPREMUM); + + /* Set n_owned of the supremum record. */ + page[PAGE_NEW_SUPREMUM - REC_N_NEW_EXTRA_BYTES] = (byte) n_owned; + + /* The dense directory excludes the infimum and supremum records. */ + n = page_dir_get_n_heap(page) - PAGE_HEAP_NO_USER_LOW; + + if (i >= n) { + if (UNIV_LIKELY(i == n)) { + return(TRUE); + } + + page_zip_fail(("page_zip_set_extra_bytes 2: %u != %u\n", + (unsigned) i, (unsigned) n)); + return(FALSE); + } + + offs = page_zip_dir_get(page_zip, i); + + /* Set the extra bytes of deleted records on the free list. */ + for (;;) { + if (UNIV_UNLIKELY(!offs) + || UNIV_UNLIKELY(offs & ~PAGE_ZIP_DIR_SLOT_MASK)) { + + page_zip_fail(("page_zip_set_extra_bytes 3: %lx\n", + (ulong) offs)); + return(FALSE); + } + + rec = page + offs; + rec[-REC_N_NEW_EXTRA_BYTES] = 0; /* info_bits and n_owned */ + + if (++i == n) { + break; + } + + offs = page_zip_dir_get(page_zip, i); + rec_set_next_offs_new(rec, offs); + } + + /* Terminate the free list. */ + rec[-REC_N_NEW_EXTRA_BYTES] = 0; /* info_bits and n_owned */ + rec_set_next_offs_new(rec, 0); + + return(TRUE); +} + +/************************************************************************** +Apply the modification log to a record containing externally stored +columns. Do not copy the fields that are stored separately. */ +static +const byte* +page_zip_apply_log_ext( +/*===================*/ + /* out: pointer to modification log, + or NULL on failure */ + rec_t* rec, /* in/out: record */ + const ulint* offsets, /* in: rec_get_offsets(rec) */ + ulint trx_id_col, /* in: position of of DB_TRX_ID */ + const byte* data, /* in: modification log */ + const byte* end) /* in: end of modification log */ +{ + ulint i; + ulint len; + byte* next_out = rec; + + /* Check if there are any externally stored columns. + For each externally stored column, skip the + BTR_EXTERN_FIELD_REF. */ + + for (i = 0; i < rec_offs_n_fields(offsets); i++) { + byte* dst; + + if (UNIV_UNLIKELY(i == trx_id_col)) { + /* Skip trx_id and roll_ptr */ + dst = rec_get_nth_field(rec, offsets, + i, &len); + if (UNIV_UNLIKELY(dst - next_out >= end - data) + || UNIV_UNLIKELY + (len < (DATA_TRX_ID_LEN + DATA_ROLL_PTR_LEN)) + || rec_offs_nth_extern(offsets, i)) { + page_zip_fail(("page_zip_apply_log_ext:" + " trx_id len %lu," + " %p - %p >= %p - %p\n", + (ulong) len, + (const void*) dst, + (const void*) next_out, + (const void*) end, + (const void*) data)); + return(NULL); + } + + memcpy(next_out, data, dst - next_out); + data += dst - next_out; + next_out = dst + (DATA_TRX_ID_LEN + + DATA_ROLL_PTR_LEN); + } else if (rec_offs_nth_extern(offsets, i)) { + dst = rec_get_nth_field(rec, offsets, + i, &len); + ut_ad(len + >= BTR_EXTERN_FIELD_REF_SIZE); + + len += dst - next_out + - BTR_EXTERN_FIELD_REF_SIZE; + + if (UNIV_UNLIKELY(data + len >= end)) { + page_zip_fail(("page_zip_apply_log_ext: " + "ext %p+%lu >= %p\n", + (const void*) data, + (ulong) len, + (const void*) end)); + return(NULL); + } + + memcpy(next_out, data, len); + data += len; + next_out += len + + BTR_EXTERN_FIELD_REF_SIZE; + } + } + + /* Copy the last bytes of the record. */ + len = rec_get_end(rec, offsets) - next_out; + if (UNIV_UNLIKELY(data + len >= end)) { + page_zip_fail(("page_zip_apply_log_ext: " + "last %p+%lu >= %p\n", + (const void*) data, + (ulong) len, + (const void*) end)); + return(NULL); + } + memcpy(next_out, data, len); + data += len; + + return(data); +} + +/************************************************************************** +Apply the modification log to an uncompressed page. +Do not copy the fields that are stored separately. */ +static +const byte* +page_zip_apply_log( +/*===============*/ + /* out: pointer to end of modification log, + or NULL on failure */ + const byte* data, /* in: modification log */ + ulint size, /* in: maximum length of the log, in bytes */ + rec_t** recs, /* in: dense page directory, + sorted by address (indexed by + heap_no - PAGE_HEAP_NO_USER_LOW) */ + ulint n_dense,/* in: size of recs[] */ + ulint trx_id_col,/* in: column number of trx_id in the index, + or ULINT_UNDEFINED if none */ + ulint heap_status, + /* in: heap_no and status bits for + the next record to uncompress */ + dict_index_t* index, /* in: index of the page */ + ulint* offsets)/* in/out: work area for + rec_get_offsets_reverse() */ +{ + const byte* const end = data + size; + + for (;;) { + ulint val; + rec_t* rec; + ulint len; + ulint hs; + + val = *data++; + if (UNIV_UNLIKELY(!val)) { + return(data - 1); + } + if (val & 0x80) { + val = (val & 0x7f) << 8 | *data++; + if (UNIV_UNLIKELY(!val)) { + page_zip_fail(("page_zip_apply_log:" + " invalid val %x%x\n", + data[-2], data[-1])); + return(NULL); + } + } + if (UNIV_UNLIKELY(data >= end)) { + page_zip_fail(("page_zip_apply_log: %p >= %p\n", + (const void*) data, + (const void*) end)); + return(NULL); + } + if (UNIV_UNLIKELY((val >> 1) > n_dense)) { + page_zip_fail(("page_zip_apply_log: %lu>>1 > %lu\n", + (ulong) val, (ulong) n_dense)); + return(NULL); + } + + /* Determine the heap number and status bits of the record. */ + rec = recs[(val >> 1) - 1]; + + hs = ((val >> 1) + 1) << REC_HEAP_NO_SHIFT; + hs |= heap_status & ((1 << REC_HEAP_NO_SHIFT) - 1); + + /* This may either be an old record that is being + overwritten (updated in place, or allocated from + the free list), or a new record, with the next + available_heap_no. */ + if (UNIV_UNLIKELY(hs > heap_status)) { + page_zip_fail(("page_zip_apply_log: %lu > %lu\n", + (ulong) hs, (ulong) heap_status)); + return(NULL); + } else if (hs == heap_status) { + /* A new record was allocated from the heap. */ + if (UNIV_UNLIKELY(val & 1)) { + /* Only existing records may be cleared. */ + page_zip_fail(("page_zip_apply_log:" + " attempting to create" + " deleted rec %lu\n", + (ulong) hs)); + return(NULL); + } + heap_status += 1 << REC_HEAP_NO_SHIFT; + } + + mach_write_to_2(rec - REC_NEW_HEAP_NO, hs); + + if (val & 1) { + /* Clear the data bytes of the record. */ + mem_heap_t* heap = NULL; + ulint* offs; + offs = rec_get_offsets(rec, index, offsets, + ULINT_UNDEFINED, &heap); + memset(rec, 0, rec_offs_data_size(offs)); + + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } + continue; + } + +#if REC_STATUS_NODE_PTR != TRUE +# error "REC_STATUS_NODE_PTR != TRUE" +#endif + rec_get_offsets_reverse(data, index, + hs & REC_STATUS_NODE_PTR, + offsets); + rec_offs_make_valid(rec, index, offsets); + + /* Copy the extra bytes (backwards). */ + { + byte* start = rec_get_start(rec, offsets); + byte* b = rec - REC_N_NEW_EXTRA_BYTES; + while (b != start) { + *--b = *data++; + } + } + + /* Copy the data bytes. */ + if (UNIV_UNLIKELY(rec_offs_any_extern(offsets))) { + /* Non-leaf nodes should not contain any + externally stored columns. */ + if (UNIV_UNLIKELY(hs & REC_STATUS_NODE_PTR)) { + page_zip_fail(("page_zip_apply_log: " + "%lu&REC_STATUS_NODE_PTR\n", + (ulong) hs)); + return(NULL); + } + + data = page_zip_apply_log_ext( + rec, offsets, trx_id_col, data, end); + + if (UNIV_UNLIKELY(!data)) { + return(NULL); + } + } else if (UNIV_UNLIKELY(hs & REC_STATUS_NODE_PTR)) { + len = rec_offs_data_size(offsets) + - REC_NODE_PTR_SIZE; + /* Copy the data bytes, except node_ptr. */ + if (UNIV_UNLIKELY(data + len >= end)) { + page_zip_fail(("page_zip_apply_log: " + "node_ptr %p+%lu >= %p\n", + (const void*) data, + (ulong) len, + (const void*) end)); + return(NULL); + } + memcpy(rec, data, len); + data += len; + } else if (UNIV_LIKELY(trx_id_col == ULINT_UNDEFINED)) { + len = rec_offs_data_size(offsets); + + /* Copy all data bytes of + a record in a secondary index. */ + if (UNIV_UNLIKELY(data + len >= end)) { + page_zip_fail(("page_zip_apply_log: " + "sec %p+%lu >= %p\n", + (const void*) data, + (ulong) len, + (const void*) end)); + return(NULL); + } + + memcpy(rec, data, len); + data += len; + } else { + /* Skip DB_TRX_ID and DB_ROLL_PTR. */ + ulint l = rec_get_nth_field_offs(offsets, + trx_id_col, &len); + byte* b; + + if (UNIV_UNLIKELY(data + l >= end) + || UNIV_UNLIKELY(len < (DATA_TRX_ID_LEN + + DATA_ROLL_PTR_LEN))) { + page_zip_fail(("page_zip_apply_log: " + "trx_id %p+%lu >= %p\n", + (const void*) data, + (ulong) l, + (const void*) end)); + return(NULL); + } + + /* Copy any preceding data bytes. */ + memcpy(rec, data, l); + data += l; + + /* Copy any bytes following DB_TRX_ID, DB_ROLL_PTR. */ + b = rec + l + (DATA_TRX_ID_LEN + DATA_ROLL_PTR_LEN); + len = rec_get_end(rec, offsets) - b; + if (UNIV_UNLIKELY(data + len >= end)) { + page_zip_fail(("page_zip_apply_log: " + "clust %p+%lu >= %p\n", + (const void*) data, + (ulong) len, + (const void*) end)); + return(NULL); + } + memcpy(b, data, len); + data += len; + } + } +} + +/************************************************************************** +Decompress the records of a node pointer page. */ +static +ibool +page_zip_decompress_node_ptrs( +/*==========================*/ + /* out: TRUE on success, + FALSE on failure */ + page_zip_des_t* page_zip, /* in/out: compressed page */ + z_stream* d_stream, /* in/out: compressed page stream */ + rec_t** recs, /* in: dense page directory + sorted by address */ + ulint n_dense, /* in: size of recs[] */ + dict_index_t* index, /* in: the index of the page */ + ulint* offsets, /* in/out: temporary offsets */ + mem_heap_t* heap) /* in: temporary memory heap */ +{ + ulint heap_status = REC_STATUS_NODE_PTR + | PAGE_HEAP_NO_USER_LOW << REC_HEAP_NO_SHIFT; + ulint slot; + const byte* storage; + + /* Subtract the space reserved for uncompressed data. */ + d_stream->avail_in -= n_dense + * (PAGE_ZIP_DIR_SLOT_SIZE + REC_NODE_PTR_SIZE); + + /* Decompress the records in heap_no order. */ + for (slot = 0; slot < n_dense; slot++) { + rec_t* rec = recs[slot]; + + d_stream->avail_out = rec - REC_N_NEW_EXTRA_BYTES + - d_stream->next_out; + + ut_ad(d_stream->avail_out < UNIV_PAGE_SIZE + - PAGE_ZIP_START - PAGE_DIR); + switch (inflate(d_stream, Z_SYNC_FLUSH)) { + case Z_STREAM_END: + /* Apparently, n_dense has grown + since the time the page was last compressed. */ + goto zlib_done; + case Z_OK: + case Z_BUF_ERROR: + if (!d_stream->avail_out) { + break; + } + /* fall through */ + default: + page_zip_fail(("page_zip_decompress_node_ptrs:" + " 1 inflate(Z_SYNC_FLUSH)=%s\n", + d_stream->msg)); + goto zlib_error; + } + + ut_ad(d_stream->next_out == rec - REC_N_NEW_EXTRA_BYTES); + /* Prepare to decompress the data bytes. */ + d_stream->next_out = rec; + /* Set heap_no and the status bits. */ + mach_write_to_2(rec - REC_NEW_HEAP_NO, heap_status); + heap_status += 1 << REC_HEAP_NO_SHIFT; + + /* Read the offsets. The status bits are needed here. */ + offsets = rec_get_offsets(rec, index, offsets, + ULINT_UNDEFINED, &heap); + + /* Non-leaf nodes should not have any externally + stored columns. */ + ut_ad(!rec_offs_any_extern(offsets)); + + /* Decompress the data bytes, except node_ptr. */ + d_stream->avail_out = rec_offs_data_size(offsets) + - REC_NODE_PTR_SIZE; + + switch (inflate(d_stream, Z_SYNC_FLUSH)) { + case Z_STREAM_END: + goto zlib_done; + case Z_OK: + case Z_BUF_ERROR: + if (!d_stream->avail_out) { + break; + } + /* fall through */ + default: + page_zip_fail(("page_zip_decompress_node_ptrs:" + " 2 inflate(Z_SYNC_FLUSH)=%s\n", + d_stream->msg)); + goto zlib_error; + } + + /* Clear the node pointer in case the record + will be deleted and the space will be reallocated + to a smaller record. */ + memset(d_stream->next_out, 0, REC_NODE_PTR_SIZE); + d_stream->next_out += REC_NODE_PTR_SIZE; + + ut_ad(d_stream->next_out == rec_get_end(rec, offsets)); + } + + /* Decompress any trailing garbage, in case the last record was + allocated from an originally longer space on the free list. */ + d_stream->avail_out = page_header_get_field(page_zip->data, + PAGE_HEAP_TOP) + - page_offset(d_stream->next_out); + if (UNIV_UNLIKELY(d_stream->avail_out > UNIV_PAGE_SIZE + - PAGE_ZIP_START - PAGE_DIR)) { + + page_zip_fail(("page_zip_decompress_node_ptrs:" + " avail_out = %u\n", + d_stream->avail_out)); + goto zlib_error; + } + + if (UNIV_UNLIKELY(inflate(d_stream, Z_FINISH) != Z_STREAM_END)) { + page_zip_fail(("page_zip_decompress_node_ptrs:" + " inflate(Z_FINISH)=%s\n", + d_stream->msg)); +zlib_error: + inflateEnd(d_stream); + return(FALSE); + } + + /* Note that d_stream->avail_out > 0 may hold here + if the modification log is nonempty. */ + +zlib_done: + if (UNIV_UNLIKELY(inflateEnd(d_stream) != Z_OK)) { + ut_error; + } + + { + page_t* page = page_align(d_stream->next_out); + + /* Clear the unused heap space on the uncompressed page. */ + memset(d_stream->next_out, 0, + page_dir_get_nth_slot(page, + page_dir_get_n_slots(page) - 1) + - d_stream->next_out); + } + +#ifdef UNIV_DEBUG + page_zip->m_start = PAGE_DATA + d_stream->total_in; +#endif /* UNIV_DEBUG */ + + /* Apply the modification log. */ + { + const byte* mod_log_ptr; + mod_log_ptr = page_zip_apply_log(d_stream->next_in, + d_stream->avail_in + 1, + recs, n_dense, + ULINT_UNDEFINED, heap_status, + index, offsets); + + if (UNIV_UNLIKELY(!mod_log_ptr)) { + return(FALSE); + } + page_zip->m_end = mod_log_ptr - page_zip->data; + page_zip->m_nonempty = mod_log_ptr != d_stream->next_in; + } + + if (UNIV_UNLIKELY + (page_zip_get_trailer_len(page_zip, + dict_index_is_clust(index), NULL) + + page_zip->m_end >= page_zip_get_size(page_zip))) { + page_zip_fail(("page_zip_decompress_node_ptrs:" + " %lu + %lu >= %lu, %lu\n", + (ulong) page_zip_get_trailer_len( + page_zip, dict_index_is_clust(index), + NULL), + (ulong) page_zip->m_end, + (ulong) page_zip_get_size(page_zip), + (ulong) dict_index_is_clust(index))); + return(FALSE); + } + + /* Restore the uncompressed columns in heap_no order. */ + storage = page_zip->data + page_zip_get_size(page_zip) + - n_dense * PAGE_ZIP_DIR_SLOT_SIZE; + + for (slot = 0; slot < n_dense; slot++) { + rec_t* rec = recs[slot]; + + offsets = rec_get_offsets(rec, index, offsets, + ULINT_UNDEFINED, &heap); + /* Non-leaf nodes should not have any externally + stored columns. */ + ut_ad(!rec_offs_any_extern(offsets)); + storage -= REC_NODE_PTR_SIZE; + + memcpy(rec_get_end(rec, offsets) - REC_NODE_PTR_SIZE, + storage, REC_NODE_PTR_SIZE); + } + + return(TRUE); +} + +/************************************************************************** +Decompress the records of a leaf node of a secondary index. */ +static +ibool +page_zip_decompress_sec( +/*====================*/ + /* out: TRUE on success, + FALSE on failure */ + page_zip_des_t* page_zip, /* in/out: compressed page */ + z_stream* d_stream, /* in/out: compressed page stream */ + rec_t** recs, /* in: dense page directory + sorted by address */ + ulint n_dense, /* in: size of recs[] */ + dict_index_t* index, /* in: the index of the page */ + ulint* offsets) /* in/out: temporary offsets */ +{ + ulint heap_status = REC_STATUS_ORDINARY + | PAGE_HEAP_NO_USER_LOW << REC_HEAP_NO_SHIFT; + ulint slot; + + ut_a(!dict_index_is_clust(index)); + + /* Subtract the space reserved for uncompressed data. */ + d_stream->avail_in -= n_dense * PAGE_ZIP_DIR_SLOT_SIZE; + + for (slot = 0; slot < n_dense; slot++) { + rec_t* rec = recs[slot]; + + /* Decompress everything up to this record. */ + d_stream->avail_out = rec - REC_N_NEW_EXTRA_BYTES + - d_stream->next_out; + + if (UNIV_LIKELY(d_stream->avail_out)) { + switch (inflate(d_stream, Z_SYNC_FLUSH)) { + case Z_STREAM_END: + /* Apparently, n_dense has grown + since the time the page was last compressed. */ + goto zlib_done; + case Z_OK: + case Z_BUF_ERROR: + if (!d_stream->avail_out) { + break; + } + /* fall through */ + default: + page_zip_fail(("page_zip_decompress_sec:" + " inflate(Z_SYNC_FLUSH)=%s\n", + d_stream->msg)); + goto zlib_error; + } + } + + ut_ad(d_stream->next_out == rec - REC_N_NEW_EXTRA_BYTES); + + /* Skip the REC_N_NEW_EXTRA_BYTES. */ + + d_stream->next_out = rec; + + /* Set heap_no and the status bits. */ + mach_write_to_2(rec - REC_NEW_HEAP_NO, heap_status); + heap_status += 1 << REC_HEAP_NO_SHIFT; + } + + /* Decompress the data of the last record and any trailing garbage, + in case the last record was allocated from an originally longer space + on the free list. */ + d_stream->avail_out = page_header_get_field(page_zip->data, + PAGE_HEAP_TOP) + - page_offset(d_stream->next_out); + if (UNIV_UNLIKELY(d_stream->avail_out > UNIV_PAGE_SIZE + - PAGE_ZIP_START - PAGE_DIR)) { + + page_zip_fail(("page_zip_decompress_sec:" + " avail_out = %u\n", + d_stream->avail_out)); + goto zlib_error; + } + + if (UNIV_UNLIKELY(inflate(d_stream, Z_FINISH) != Z_STREAM_END)) { + page_zip_fail(("page_zip_decompress_sec:" + " inflate(Z_FINISH)=%s\n", + d_stream->msg)); +zlib_error: + inflateEnd(d_stream); + return(FALSE); + } + + /* Note that d_stream->avail_out > 0 may hold here + if the modification log is nonempty. */ + +zlib_done: + if (UNIV_UNLIKELY(inflateEnd(d_stream) != Z_OK)) { + ut_error; + } + + { + page_t* page = page_align(d_stream->next_out); + + /* Clear the unused heap space on the uncompressed page. */ + memset(d_stream->next_out, 0, + page_dir_get_nth_slot(page, + page_dir_get_n_slots(page) - 1) + - d_stream->next_out); + } + +#ifdef UNIV_DEBUG + page_zip->m_start = PAGE_DATA + d_stream->total_in; +#endif /* UNIV_DEBUG */ + + /* Apply the modification log. */ + { + const byte* mod_log_ptr; + mod_log_ptr = page_zip_apply_log(d_stream->next_in, + d_stream->avail_in + 1, + recs, n_dense, + ULINT_UNDEFINED, heap_status, + index, offsets); + + if (UNIV_UNLIKELY(!mod_log_ptr)) { + return(FALSE); + } + page_zip->m_end = mod_log_ptr - page_zip->data; + page_zip->m_nonempty = mod_log_ptr != d_stream->next_in; + } + + if (UNIV_UNLIKELY(page_zip_get_trailer_len(page_zip, FALSE, NULL) + + page_zip->m_end >= page_zip_get_size(page_zip))) { + + page_zip_fail(("page_zip_decompress_sec: %lu + %lu >= %lu\n", + (ulong) page_zip_get_trailer_len( + page_zip, FALSE, NULL), + (ulong) page_zip->m_end, + (ulong) page_zip_get_size(page_zip))); + return(FALSE); + } + + /* There are no uncompressed columns on leaf pages of + secondary indexes. */ + + return(TRUE); +} + +/************************************************************************** +Decompress a record of a leaf node of a clustered index that contains +externally stored columns. */ +static +ibool +page_zip_decompress_clust_ext( +/*==========================*/ + /* out: TRUE on success */ + z_stream* d_stream, /* in/out: compressed page stream */ + rec_t* rec, /* in/out: record */ + const ulint* offsets, /* in: rec_get_offsets(rec) */ + ulint trx_id_col) /* in: position of of DB_TRX_ID */ +{ + ulint i; + + for (i = 0; i < rec_offs_n_fields(offsets); i++) { + ulint len; + byte* dst; + + if (UNIV_UNLIKELY(i == trx_id_col)) { + /* Skip trx_id and roll_ptr */ + dst = rec_get_nth_field(rec, offsets, i, &len); + if (UNIV_UNLIKELY(len < DATA_TRX_ID_LEN + + DATA_ROLL_PTR_LEN)) { + + page_zip_fail(("page_zip_decompress_clust_ext:" + " len[%lu] = %lu\n", + (ulong) i, (ulong) len)); + return(FALSE); + } + + if (rec_offs_nth_extern(offsets, i)) { + + page_zip_fail(("page_zip_decompress_clust_ext:" + " DB_TRX_ID at %lu is ext\n", + (ulong) i)); + return(FALSE); + } + + d_stream->avail_out = dst - d_stream->next_out; + + switch (inflate(d_stream, Z_SYNC_FLUSH)) { + case Z_STREAM_END: + case Z_OK: + case Z_BUF_ERROR: + if (!d_stream->avail_out) { + break; + } + /* fall through */ + default: + page_zip_fail(("page_zip_decompress_clust_ext:" + " 1 inflate(Z_SYNC_FLUSH)=%s\n", + d_stream->msg)); + return(FALSE); + } + + ut_ad(d_stream->next_out == dst); + + /* Clear DB_TRX_ID and DB_ROLL_PTR in order to + avoid uninitialized bytes in case the record + is affected by page_zip_apply_log(). */ + memset(dst, 0, DATA_TRX_ID_LEN + DATA_ROLL_PTR_LEN); + + d_stream->next_out += DATA_TRX_ID_LEN + + DATA_ROLL_PTR_LEN; + } else if (rec_offs_nth_extern(offsets, i)) { + dst = rec_get_nth_field(rec, offsets, i, &len); + ut_ad(len >= BTR_EXTERN_FIELD_REF_SIZE); + dst += len - BTR_EXTERN_FIELD_REF_SIZE; + + d_stream->avail_out = dst - d_stream->next_out; + switch (inflate(d_stream, Z_SYNC_FLUSH)) { + case Z_STREAM_END: + case Z_OK: + case Z_BUF_ERROR: + if (!d_stream->avail_out) { + break; + } + /* fall through */ + default: + page_zip_fail(("page_zip_decompress_clust_ext:" + " 2 inflate(Z_SYNC_FLUSH)=%s\n", + d_stream->msg)); + return(FALSE); + } + + ut_ad(d_stream->next_out == dst); + + /* Clear the BLOB pointer in case + the record will be deleted and the + space will not be reused. Note that + the final initialization of the BLOB + pointers (copying from "externs" + or clearing) will have to take place + only after the page modification log + has been applied. Otherwise, we + could end up with an uninitialized + BLOB pointer when a record is deleted, + reallocated and deleted. */ + memset(d_stream->next_out, 0, + BTR_EXTERN_FIELD_REF_SIZE); + d_stream->next_out + += BTR_EXTERN_FIELD_REF_SIZE; + } + } + + return(TRUE); +} + +/************************************************************************** +Compress the records of a leaf node of a clustered index. */ +static +ibool +page_zip_decompress_clust( +/*======================*/ + /* out: TRUE on success, + FALSE on failure */ + page_zip_des_t* page_zip, /* in/out: compressed page */ + z_stream* d_stream, /* in/out: compressed page stream */ + rec_t** recs, /* in: dense page directory + sorted by address */ + ulint n_dense, /* in: size of recs[] */ + dict_index_t* index, /* in: the index of the page */ + ulint trx_id_col, /* index of the trx_id column */ + ulint* offsets, /* in/out: temporary offsets */ + mem_heap_t* heap) /* in: temporary memory heap */ +{ + int err; + ulint slot; + ulint heap_status = REC_STATUS_ORDINARY + | PAGE_HEAP_NO_USER_LOW << REC_HEAP_NO_SHIFT; + const byte* storage; + const byte* externs; + + ut_a(dict_index_is_clust(index)); + + /* Subtract the space reserved for uncompressed data. */ + d_stream->avail_in -= n_dense * (PAGE_ZIP_DIR_SLOT_SIZE + + DATA_TRX_ID_LEN + + DATA_ROLL_PTR_LEN); + + /* Decompress the records in heap_no order. */ + for (slot = 0; slot < n_dense; slot++) { + rec_t* rec = recs[slot]; + + d_stream->avail_out = rec - REC_N_NEW_EXTRA_BYTES + - d_stream->next_out; + + ut_ad(d_stream->avail_out < UNIV_PAGE_SIZE + - PAGE_ZIP_START - PAGE_DIR); + err = inflate(d_stream, Z_SYNC_FLUSH); + switch (err) { + case Z_STREAM_END: + /* Apparently, n_dense has grown + since the time the page was last compressed. */ + goto zlib_done; + case Z_OK: + case Z_BUF_ERROR: + if (UNIV_LIKELY(!d_stream->avail_out)) { + break; + } + /* fall through */ + default: + page_zip_fail(("page_zip_decompress_clust:" + " 1 inflate(Z_SYNC_FLUSH)=%s\n", + d_stream->msg)); + goto zlib_error; + } + + ut_ad(d_stream->next_out == rec - REC_N_NEW_EXTRA_BYTES); + /* Prepare to decompress the data bytes. */ + d_stream->next_out = rec; + /* Set heap_no and the status bits. */ + mach_write_to_2(rec - REC_NEW_HEAP_NO, heap_status); + heap_status += 1 << REC_HEAP_NO_SHIFT; + + /* Read the offsets. The status bits are needed here. */ + offsets = rec_get_offsets(rec, index, offsets, + ULINT_UNDEFINED, &heap); + + /* This is a leaf page in a clustered index. */ + + /* Check if there are any externally stored columns. + For each externally stored column, restore the + BTR_EXTERN_FIELD_REF separately. */ + + if (UNIV_UNLIKELY(rec_offs_any_extern(offsets))) { + if (UNIV_UNLIKELY + (!page_zip_decompress_clust_ext( + d_stream, rec, offsets, trx_id_col))) { + + goto zlib_error; + } + } else { + /* Skip trx_id and roll_ptr */ + ulint len; + byte* dst = rec_get_nth_field(rec, offsets, + trx_id_col, &len); + if (UNIV_UNLIKELY(len < DATA_TRX_ID_LEN + + DATA_ROLL_PTR_LEN)) { + + page_zip_fail(("page_zip_decompress_clust:" + " len = %lu\n", (ulong) len)); + goto zlib_error; + } + + d_stream->avail_out = dst - d_stream->next_out; + + switch (inflate(d_stream, Z_SYNC_FLUSH)) { + case Z_STREAM_END: + case Z_OK: + case Z_BUF_ERROR: + if (!d_stream->avail_out) { + break; + } + /* fall through */ + default: + page_zip_fail(("page_zip_decompress_clust:" + " 2 inflate(Z_SYNC_FLUSH)=%s\n", + d_stream->msg)); + goto zlib_error; + } + + ut_ad(d_stream->next_out == dst); + + /* Clear DB_TRX_ID and DB_ROLL_PTR in order to + avoid uninitialized bytes in case the record + is affected by page_zip_apply_log(). */ + memset(dst, 0, DATA_TRX_ID_LEN + DATA_ROLL_PTR_LEN); + + d_stream->next_out += DATA_TRX_ID_LEN + + DATA_ROLL_PTR_LEN; + } + + /* Decompress the last bytes of the record. */ + d_stream->avail_out = rec_get_end(rec, offsets) + - d_stream->next_out; + + switch (inflate(d_stream, Z_SYNC_FLUSH)) { + case Z_STREAM_END: + case Z_OK: + case Z_BUF_ERROR: + if (!d_stream->avail_out) { + break; + } + /* fall through */ + default: + page_zip_fail(("page_zip_decompress_clust:" + " 3 inflate(Z_SYNC_FLUSH)=%s\n", + d_stream->msg)); + goto zlib_error; + } + } + + /* Decompress any trailing garbage, in case the last record was + allocated from an originally longer space on the free list. */ + d_stream->avail_out = page_header_get_field(page_zip->data, + PAGE_HEAP_TOP) + - page_offset(d_stream->next_out); + if (UNIV_UNLIKELY(d_stream->avail_out > UNIV_PAGE_SIZE + - PAGE_ZIP_START - PAGE_DIR)) { + + page_zip_fail(("page_zip_decompress_clust:" + " avail_out = %u\n", + d_stream->avail_out)); + goto zlib_error; + } + + if (UNIV_UNLIKELY(inflate(d_stream, Z_FINISH) != Z_STREAM_END)) { + page_zip_fail(("page_zip_decompress_clust:" + " inflate(Z_FINISH)=%s\n", + d_stream->msg)); +zlib_error: + inflateEnd(d_stream); + return(FALSE); + } + + /* Note that d_stream->avail_out > 0 may hold here + if the modification log is nonempty. */ + +zlib_done: + if (UNIV_UNLIKELY(inflateEnd(d_stream) != Z_OK)) { + ut_error; + } + + { + page_t* page = page_align(d_stream->next_out); + + /* Clear the unused heap space on the uncompressed page. */ + memset(d_stream->next_out, 0, + page_dir_get_nth_slot(page, + page_dir_get_n_slots(page) - 1) + - d_stream->next_out); + } + +#ifdef UNIV_DEBUG + page_zip->m_start = PAGE_DATA + d_stream->total_in; +#endif /* UNIV_DEBUG */ + + /* Apply the modification log. */ + { + const byte* mod_log_ptr; + mod_log_ptr = page_zip_apply_log(d_stream->next_in, + d_stream->avail_in + 1, + recs, n_dense, + trx_id_col, heap_status, + index, offsets); + + if (UNIV_UNLIKELY(!mod_log_ptr)) { + return(FALSE); + } + page_zip->m_end = mod_log_ptr - page_zip->data; + page_zip->m_nonempty = mod_log_ptr != d_stream->next_in; + } + + if (UNIV_UNLIKELY(page_zip_get_trailer_len(page_zip, TRUE, NULL) + + page_zip->m_end >= page_zip_get_size(page_zip))) { + + page_zip_fail(("page_zip_decompress_clust: %lu + %lu >= %lu\n", + (ulong) page_zip_get_trailer_len( + page_zip, TRUE, NULL), + (ulong) page_zip->m_end, + (ulong) page_zip_get_size(page_zip))); + return(FALSE); + } + + storage = page_zip->data + page_zip_get_size(page_zip) + - n_dense * PAGE_ZIP_DIR_SLOT_SIZE; + + externs = storage - n_dense + * (DATA_TRX_ID_LEN + DATA_ROLL_PTR_LEN); + + /* Restore the uncompressed columns in heap_no order. */ + + for (slot = 0; slot < n_dense; slot++) { + ulint i; + ulint len; + byte* dst; + rec_t* rec = recs[slot]; + ibool exists = !page_zip_dir_find_free( + page_zip, page_offset(rec)); + offsets = rec_get_offsets(rec, index, offsets, + ULINT_UNDEFINED, &heap); + + dst = rec_get_nth_field(rec, offsets, + trx_id_col, &len); + ut_ad(len >= DATA_TRX_ID_LEN + DATA_ROLL_PTR_LEN); + storage -= DATA_TRX_ID_LEN + DATA_ROLL_PTR_LEN; + memcpy(dst, storage, + DATA_TRX_ID_LEN + DATA_ROLL_PTR_LEN); + + /* Check if there are any externally stored + columns in this record. For each externally + stored column, restore or clear the + BTR_EXTERN_FIELD_REF. */ + if (!rec_offs_any_extern(offsets)) { + continue; + } + + for (i = 0; i < rec_offs_n_fields(offsets); i++) { + if (!rec_offs_nth_extern(offsets, i)) { + continue; + } + dst = rec_get_nth_field(rec, offsets, i, &len); + + if (UNIV_UNLIKELY(len < BTR_EXTERN_FIELD_REF_SIZE)) { + page_zip_fail(("page_zip_decompress_clust:" + " %lu < 20\n", + (ulong) len)); + return(FALSE); + } + + dst += len - BTR_EXTERN_FIELD_REF_SIZE; + + if (UNIV_LIKELY(exists)) { + /* Existing record: + restore the BLOB pointer */ + externs -= BTR_EXTERN_FIELD_REF_SIZE; + + if (UNIV_UNLIKELY + (externs < page_zip->data + + page_zip->m_end)) { + page_zip_fail(("page_zip_" + "decompress_clust: " + "%p < %p + %lu\n", + (const void*) externs, + (const void*) + page_zip->data, + (ulong) + page_zip->m_end)); + return(FALSE); + } + + memcpy(dst, externs, + BTR_EXTERN_FIELD_REF_SIZE); + + page_zip->n_blobs++; + } else { + /* Deleted record: + clear the BLOB pointer */ + memset(dst, 0, + BTR_EXTERN_FIELD_REF_SIZE); + } + } + } + + return(TRUE); +} + +/************************************************************************** +Decompress a page. This function should tolerate errors on the compressed +page. Instead of letting assertions fail, it will return FALSE if an +inconsistency is detected. */ +UNIV_INTERN +ibool +page_zip_decompress( +/*================*/ + /* out: TRUE on success, FALSE on failure */ + page_zip_des_t* page_zip,/* in: data, ssize; + out: m_start, m_end, m_nonempty, n_blobs */ + page_t* page) /* out: uncompressed page, may be trashed */ +{ + z_stream d_stream; + dict_index_t* index = NULL; + rec_t** recs; /* dense page directory, sorted by address */ + ulint n_dense;/* number of user records on the page */ + ulint trx_id_col = ULINT_UNDEFINED; + mem_heap_t* heap; + ulint* offsets; + ullint usec = ut_time_us(NULL); + + ut_ad(page_zip_simple_validate(page_zip)); + UNIV_MEM_ASSERT_W(page, UNIV_PAGE_SIZE); + UNIV_MEM_ASSERT_RW(page_zip->data, page_zip_get_size(page_zip)); + + /* The dense directory excludes the infimum and supremum records. */ + n_dense = page_dir_get_n_heap(page_zip->data) - PAGE_HEAP_NO_USER_LOW; + if (UNIV_UNLIKELY(n_dense * PAGE_ZIP_DIR_SLOT_SIZE + >= page_zip_get_size(page_zip))) { + page_zip_fail(("page_zip_decompress 1: %lu %lu\n", + (ulong) n_dense, + (ulong) page_zip_get_size(page_zip))); + return(FALSE); + } + + heap = mem_heap_create(n_dense * (3 * sizeof *recs) + UNIV_PAGE_SIZE); + recs = mem_heap_alloc(heap, n_dense * (2 * sizeof *recs)); + +#ifdef UNIV_ZIP_DEBUG + /* Clear the page. */ + memset(page, 0x55, UNIV_PAGE_SIZE); +#endif /* UNIV_ZIP_DEBUG */ + UNIV_MEM_INVALID(page, UNIV_PAGE_SIZE); + /* Copy the page header. */ + memcpy(page, page_zip->data, PAGE_DATA); + + /* Copy the page directory. */ + if (UNIV_UNLIKELY(!page_zip_dir_decode(page_zip, page, recs, + recs + n_dense, n_dense))) { +zlib_error: + mem_heap_free(heap); + return(FALSE); + } + + /* Copy the infimum and supremum records. */ + memcpy(page + (PAGE_NEW_INFIMUM - REC_N_NEW_EXTRA_BYTES), + infimum_extra, sizeof infimum_extra); + if (UNIV_UNLIKELY(!page_get_n_recs(page))) { + rec_set_next_offs_new(page + PAGE_NEW_INFIMUM, + PAGE_NEW_SUPREMUM); + } else { + rec_set_next_offs_new(page + PAGE_NEW_INFIMUM, + page_zip_dir_get(page_zip, 0) + & PAGE_ZIP_DIR_SLOT_MASK); + } + memcpy(page + PAGE_NEW_INFIMUM, infimum_data, sizeof infimum_data); + memcpy(page + (PAGE_NEW_SUPREMUM - REC_N_NEW_EXTRA_BYTES + 1), + supremum_extra_data, sizeof supremum_extra_data); + + page_zip_set_alloc(&d_stream, heap); + + if (UNIV_UNLIKELY(inflateInit2(&d_stream, UNIV_PAGE_SIZE_SHIFT) + != Z_OK)) { + ut_error; + } + + d_stream.next_in = page_zip->data + PAGE_DATA; + /* Subtract the space reserved for + the page header and the end marker of the modification log. */ + d_stream.avail_in = page_zip_get_size(page_zip) - (PAGE_DATA + 1); + + d_stream.next_out = page + PAGE_ZIP_START; + d_stream.avail_out = UNIV_PAGE_SIZE - PAGE_ZIP_START; + + /* Decode the zlib header and the index information. */ + if (UNIV_UNLIKELY(inflate(&d_stream, Z_BLOCK) != Z_OK)) { + + page_zip_fail(("page_zip_decompress:" + " 1 inflate(Z_BLOCK)=%s\n", d_stream.msg)); + goto zlib_error; + } + + if (UNIV_UNLIKELY(inflate(&d_stream, Z_BLOCK) != Z_OK)) { + + page_zip_fail(("page_zip_decompress:" + " 2 inflate(Z_BLOCK)=%s\n", d_stream.msg)); + goto zlib_error; + } + + index = page_zip_fields_decode( + page + PAGE_ZIP_START, d_stream.next_out, + page_is_leaf(page) ? &trx_id_col : NULL); + + if (UNIV_UNLIKELY(!index)) { + + goto zlib_error; + } + + /* Decompress the user records. */ + page_zip->n_blobs = 0; + d_stream.next_out = page + PAGE_ZIP_START; + + { + /* Pre-allocate the offsets for rec_get_offsets_reverse(). */ + ulint n = 1 + 1/* node ptr */ + REC_OFFS_HEADER_SIZE + + dict_index_get_n_fields(index); + offsets = mem_heap_alloc(heap, n * sizeof(ulint)); + *offsets = n; + } + + /* Decompress the records in heap_no order. */ + if (!page_is_leaf(page)) { + /* This is a node pointer page. */ + ulint info_bits; + + if (UNIV_UNLIKELY + (!page_zip_decompress_node_ptrs(page_zip, &d_stream, + recs, n_dense, index, + offsets, heap))) { + goto err_exit; + } + + info_bits = mach_read_from_4(page + FIL_PAGE_PREV) == FIL_NULL + ? REC_INFO_MIN_REC_FLAG : 0; + + if (UNIV_UNLIKELY(!page_zip_set_extra_bytes(page_zip, page, + info_bits))) { + goto err_exit; + } + } else if (UNIV_LIKELY(trx_id_col == ULINT_UNDEFINED)) { + /* This is a leaf page in a secondary index. */ + if (UNIV_UNLIKELY(!page_zip_decompress_sec(page_zip, &d_stream, + recs, n_dense, + index, offsets))) { + goto err_exit; + } + + if (UNIV_UNLIKELY(!page_zip_set_extra_bytes(page_zip, + page, 0))) { +err_exit: + page_zip_fields_free(index); + mem_heap_free(heap); + return(FALSE); + } + } else { + /* This is a leaf page in a clustered index. */ + if (UNIV_UNLIKELY(!page_zip_decompress_clust(page_zip, + &d_stream, recs, + n_dense, index, + trx_id_col, + offsets, heap))) { + goto err_exit; + } + + if (UNIV_UNLIKELY(!page_zip_set_extra_bytes(page_zip, + page, 0))) { + goto err_exit; + } + } + + ut_a(page_is_comp(page)); + UNIV_MEM_ASSERT_RW(page, UNIV_PAGE_SIZE); + + page_zip_fields_free(index); + mem_heap_free(heap); + { + page_zip_stat_t* zip_stat + = &page_zip_stat[page_zip->ssize - 1]; + zip_stat->decompressed++; + zip_stat->decompressed_usec += ut_time_us(NULL) - usec; + } + + /* Update the stat counter for LRU policy. */ + buf_LRU_stat_inc_unzip(); + + return(TRUE); +} + +#ifdef UNIV_ZIP_DEBUG +/************************************************************************** +Dump a block of memory on the standard error stream. */ +static +void +page_zip_hexdump_func( +/*==================*/ + const char* name, /* in: name of the data structure */ + const void* buf, /* in: data */ + ulint size) /* in: length of the data, in bytes */ +{ + const byte* s = buf; + ulint addr; + const ulint width = 32; /* bytes per line */ + + fprintf(stderr, "%s:\n", name); + + for (addr = 0; addr < size; addr += width) { + ulint i; + + fprintf(stderr, "%04lx ", (ulong) addr); + + i = ut_min(width, size - addr); + + while (i--) { + fprintf(stderr, "%02x", *s++); + } + + putc('\n', stderr); + } +} + +#define page_zip_hexdump(buf, size) page_zip_hexdump_func(#buf, buf, size) + +/* Flag: make page_zip_validate() compare page headers only */ +UNIV_INTERN ibool page_zip_validate_header_only = FALSE; + +/************************************************************************** +Check that the compressed and decompressed pages match. */ +UNIV_INTERN +ibool +page_zip_validate_low( +/*==================*/ + /* out: TRUE if valid, FALSE if not */ + const page_zip_des_t* page_zip,/* in: compressed page */ + const page_t* page, /* in: uncompressed page */ + ibool sloppy) /* in: FALSE=strict, + TRUE=ignore the MIN_REC_FLAG */ +{ + page_zip_des_t temp_page_zip; + byte* temp_page_buf; + page_t* temp_page; + ibool valid; + + if (memcmp(page_zip->data + FIL_PAGE_PREV, page + FIL_PAGE_PREV, + FIL_PAGE_LSN - FIL_PAGE_PREV) + || memcmp(page_zip->data + FIL_PAGE_TYPE, page + FIL_PAGE_TYPE, 2) + || memcmp(page_zip->data + FIL_PAGE_DATA, page + FIL_PAGE_DATA, + PAGE_DATA - FIL_PAGE_DATA)) { + page_zip_fail(("page_zip_validate: page header\n")); + page_zip_hexdump(page_zip, sizeof *page_zip); + page_zip_hexdump(page_zip->data, page_zip_get_size(page_zip)); + page_zip_hexdump(page, UNIV_PAGE_SIZE); + return(FALSE); + } + + ut_a(page_is_comp(page)); + + if (page_zip_validate_header_only) { + return(TRUE); + } + + /* page_zip_decompress() expects the uncompressed page to be + UNIV_PAGE_SIZE aligned. */ + temp_page_buf = ut_malloc(2 * UNIV_PAGE_SIZE); + temp_page = ut_align(temp_page_buf, UNIV_PAGE_SIZE); + +#ifdef UNIV_DEBUG_VALGRIND + /* Get detailed information on the valid bits in case the + UNIV_MEM_ASSERT_RW() checks fail. The v-bits of page[], + page_zip->data[] or page_zip could be viewed at temp_page[] or + temp_page_zip in a debugger when running valgrind --db-attach. */ + VALGRIND_GET_VBITS(page, temp_page, UNIV_PAGE_SIZE); + UNIV_MEM_ASSERT_RW(page, UNIV_PAGE_SIZE); + VALGRIND_GET_VBITS(page_zip, &temp_page_zip, sizeof temp_page_zip); + UNIV_MEM_ASSERT_RW(page_zip, sizeof *page_zip); + VALGRIND_GET_VBITS(page_zip->data, temp_page, + page_zip_get_size(page_zip)); + UNIV_MEM_ASSERT_RW(page_zip->data, page_zip_get_size(page_zip)); +#endif /* UNIV_DEBUG_VALGRIND */ + + temp_page_zip = *page_zip; + valid = page_zip_decompress(&temp_page_zip, temp_page); + if (!valid) { + fputs("page_zip_validate(): failed to decompress\n", stderr); + goto func_exit; + } + if (page_zip->n_blobs != temp_page_zip.n_blobs) { + page_zip_fail(("page_zip_validate: n_blobs: %u!=%u\n", + page_zip->n_blobs, temp_page_zip.n_blobs)); + valid = FALSE; + } +#ifdef UNIV_DEBUG + if (page_zip->m_start != temp_page_zip.m_start) { + page_zip_fail(("page_zip_validate: m_start: %u!=%u\n", + page_zip->m_start, temp_page_zip.m_start)); + valid = FALSE; + } +#endif /* UNIV_DEBUG */ + if (page_zip->m_end != temp_page_zip.m_end) { + page_zip_fail(("page_zip_validate: m_end: %u!=%u\n", + page_zip->m_end, temp_page_zip.m_end)); + valid = FALSE; + } + if (page_zip->m_nonempty != temp_page_zip.m_nonempty) { + page_zip_fail(("page_zip_validate(): m_nonempty: %u!=%u\n", + page_zip->m_nonempty, + temp_page_zip.m_nonempty)); + valid = FALSE; + } + if (memcmp(page + PAGE_HEADER, temp_page + PAGE_HEADER, + UNIV_PAGE_SIZE - PAGE_HEADER - FIL_PAGE_DATA_END)) { + + /* In crash recovery, the "minimum record" flag may be + set incorrectly until the mini-transaction is + committed. Let us tolerate that difference when we + are performing a sloppy validation. */ + + if (sloppy) { + byte info_bits_diff; + ulint offset + = rec_get_next_offs(page + PAGE_NEW_INFIMUM, + TRUE); + ut_a(offset >= PAGE_NEW_SUPREMUM); + offset -= 5 /* REC_NEW_INFO_BITS */; + + info_bits_diff = page[offset] ^ temp_page[offset]; + + if (info_bits_diff == REC_INFO_MIN_REC_FLAG) { + temp_page[offset] = page[offset]; + + if (!memcmp(page + PAGE_HEADER, + temp_page + PAGE_HEADER, + UNIV_PAGE_SIZE - PAGE_HEADER + - FIL_PAGE_DATA_END)) { + + /* Only the minimum record flag + differed. Let us ignore it. */ + page_zip_fail(("page_zip_validate: " + "min_rec_flag " + "(ignored, " + "%lu,%lu,0x%02lx)\n", + page_get_space_id(page), + page_get_page_no(page), + (ulong) page[offset])); + goto func_exit; + } + } + } + page_zip_fail(("page_zip_validate: content\n")); + valid = FALSE; + } + +func_exit: + if (!valid) { + page_zip_hexdump(page_zip, sizeof *page_zip); + page_zip_hexdump(page_zip->data, page_zip_get_size(page_zip)); + page_zip_hexdump(page, UNIV_PAGE_SIZE); + page_zip_hexdump(temp_page, UNIV_PAGE_SIZE); + } + ut_free(temp_page_buf); + return(valid); +} + +/************************************************************************** +Check that the compressed and decompressed pages match. */ +UNIV_INTERN +ibool +page_zip_validate( +/*==============*/ + /* out: TRUE if valid, FALSE if not */ + const page_zip_des_t* page_zip,/* in: compressed page */ + const page_t* page) /* in: uncompressed page */ +{ + return(page_zip_validate_low(page_zip, page, + recv_recovery_is_on())); +} +#endif /* UNIV_ZIP_DEBUG */ + +#ifdef UNIV_DEBUG +static +ibool +page_zip_header_cmp( +/*================*/ + /* out: TRUE */ + const page_zip_des_t* page_zip,/* in: compressed page */ + const byte* page) /* in: uncompressed page */ +{ + ut_ad(!memcmp(page_zip->data + FIL_PAGE_PREV, page + FIL_PAGE_PREV, + FIL_PAGE_LSN - FIL_PAGE_PREV)); + ut_ad(!memcmp(page_zip->data + FIL_PAGE_TYPE, page + FIL_PAGE_TYPE, + 2)); + ut_ad(!memcmp(page_zip->data + FIL_PAGE_DATA, page + FIL_PAGE_DATA, + PAGE_DATA - FIL_PAGE_DATA)); + + return(TRUE); +} +#endif /* UNIV_DEBUG */ + +/************************************************************************** +Write a record on the compressed page that contains externally stored +columns. The data must already have been written to the uncompressed page. */ +static +byte* +page_zip_write_rec_ext( +/*===================*/ + /* out: end of modification log */ + page_zip_des_t* page_zip, /* in/out: compressed page */ + const page_t* page, /* in: page containing rec */ + const byte* rec, /* in: record being written */ + dict_index_t* index, /* in: record descriptor */ + const ulint* offsets, /* in: rec_get_offsets(rec, index) */ + ulint create, /* in: nonzero=insert, zero=update */ + ulint trx_id_col, /* in: position of DB_TRX_ID */ + ulint heap_no, /* in: heap number of rec */ + byte* storage, /* in: end of dense page directory */ + byte* data) /* in: end of modification log */ +{ + const byte* start = rec; + ulint i; + ulint len; + byte* externs = storage; + ulint n_ext = rec_offs_n_extern(offsets); + + ut_ad(rec_offs_validate(rec, index, offsets)); + UNIV_MEM_ASSERT_RW(rec, rec_offs_data_size(offsets)); + UNIV_MEM_ASSERT_RW(rec - rec_offs_extra_size(offsets), + rec_offs_extra_size(offsets)); + + externs -= (DATA_TRX_ID_LEN + DATA_ROLL_PTR_LEN) + * (page_dir_get_n_heap(page) - PAGE_HEAP_NO_USER_LOW); + + /* Note that this will not take into account + the BLOB columns of rec if create==TRUE. */ + ut_ad(data + rec_offs_data_size(offsets) + - (DATA_TRX_ID_LEN + DATA_ROLL_PTR_LEN) + - n_ext * BTR_EXTERN_FIELD_REF_SIZE + < externs - BTR_EXTERN_FIELD_REF_SIZE * page_zip->n_blobs); + + { + ulint blob_no = page_zip_get_n_prev_extern( + page_zip, rec, index); + byte* ext_end = externs - page_zip->n_blobs + * BTR_EXTERN_FIELD_REF_SIZE; + ut_ad(blob_no <= page_zip->n_blobs); + externs -= blob_no * BTR_EXTERN_FIELD_REF_SIZE; + + if (create) { + page_zip->n_blobs += n_ext; + ASSERT_ZERO_BLOB(ext_end - n_ext + * BTR_EXTERN_FIELD_REF_SIZE); + memmove(ext_end - n_ext + * BTR_EXTERN_FIELD_REF_SIZE, + ext_end, + externs - ext_end); + } + + ut_a(blob_no + n_ext <= page_zip->n_blobs); + } + + for (i = 0; i < rec_offs_n_fields(offsets); i++) { + const byte* src; + + if (UNIV_UNLIKELY(i == trx_id_col)) { + ut_ad(!rec_offs_nth_extern(offsets, + i)); + ut_ad(!rec_offs_nth_extern(offsets, + i + 1)); + /* Locate trx_id and roll_ptr. */ + src = rec_get_nth_field(rec, offsets, + i, &len); + ut_ad(len == DATA_TRX_ID_LEN); + ut_ad(src + DATA_TRX_ID_LEN + == rec_get_nth_field( + rec, offsets, + i + 1, &len)); + ut_ad(len == DATA_ROLL_PTR_LEN); + + /* Log the preceding fields. */ + ASSERT_ZERO(data, src - start); + memcpy(data, start, src - start); + data += src - start; + start = src + (DATA_TRX_ID_LEN + + DATA_ROLL_PTR_LEN); + + /* Store trx_id and roll_ptr. */ + memcpy(storage - (DATA_TRX_ID_LEN + DATA_ROLL_PTR_LEN) + * (heap_no - 1), + src, DATA_TRX_ID_LEN + DATA_ROLL_PTR_LEN); + i++; /* skip also roll_ptr */ + } else if (rec_offs_nth_extern(offsets, i)) { + src = rec_get_nth_field(rec, offsets, + i, &len); + + ut_ad(dict_index_is_clust(index)); + ut_ad(len + >= BTR_EXTERN_FIELD_REF_SIZE); + src += len - BTR_EXTERN_FIELD_REF_SIZE; + + ASSERT_ZERO(data, src - start); + memcpy(data, start, src - start); + data += src - start; + start = src + BTR_EXTERN_FIELD_REF_SIZE; + + /* Store the BLOB pointer. */ + externs -= BTR_EXTERN_FIELD_REF_SIZE; + ut_ad(data < externs); + memcpy(externs, src, BTR_EXTERN_FIELD_REF_SIZE); + } + } + + /* Log the last bytes of the record. */ + len = rec_offs_data_size(offsets) - (start - rec); + + ASSERT_ZERO(data, len); + memcpy(data, start, len); + data += len; + + return(data); +} + +/************************************************************************** +Write an entire record on the compressed page. The data must already +have been written to the uncompressed page. */ +UNIV_INTERN +void +page_zip_write_rec( +/*===============*/ + page_zip_des_t* page_zip,/* in/out: compressed page */ + const byte* rec, /* in: record being written */ + dict_index_t* index, /* in: the index the record belongs to */ + const ulint* offsets,/* in: rec_get_offsets(rec, index) */ + ulint create) /* in: nonzero=insert, zero=update */ +{ + const page_t* page; + byte* data; + byte* storage; + ulint heap_no; + byte* slot; + + ut_ad(buf_frame_get_page_zip(rec) == page_zip); + ut_ad(page_zip_simple_validate(page_zip)); + ut_ad(page_zip_get_size(page_zip) + > PAGE_DATA + page_zip_dir_size(page_zip)); + ut_ad(rec_offs_comp(offsets)); + ut_ad(rec_offs_validate(rec, index, offsets)); + + ut_ad(page_zip->m_start >= PAGE_DATA); + + page = page_align(rec); + + ut_ad(page_zip_header_cmp(page_zip, page)); + ut_ad(page_simple_validate_new((page_t*) page)); + + UNIV_MEM_ASSERT_RW(page_zip->data, page_zip_get_size(page_zip)); + UNIV_MEM_ASSERT_RW(rec, rec_offs_data_size(offsets)); + UNIV_MEM_ASSERT_RW(rec - rec_offs_extra_size(offsets), + rec_offs_extra_size(offsets)); + + slot = page_zip_dir_find(page_zip, page_offset(rec)); + ut_a(slot); + /* Copy the delete mark. */ + if (rec_get_deleted_flag(rec, TRUE)) { + *slot |= PAGE_ZIP_DIR_SLOT_DEL >> 8; + } else { + *slot &= ~(PAGE_ZIP_DIR_SLOT_DEL >> 8); + } + + ut_ad(rec_get_start((rec_t*) rec, offsets) >= page + PAGE_ZIP_START); + ut_ad(rec_get_end((rec_t*) rec, offsets) <= page + UNIV_PAGE_SIZE + - PAGE_DIR - PAGE_DIR_SLOT_SIZE + * page_dir_get_n_slots(page)); + + heap_no = rec_get_heap_no_new(rec); + ut_ad(heap_no >= PAGE_HEAP_NO_USER_LOW); /* not infimum or supremum */ + ut_ad(heap_no < page_dir_get_n_heap(page)); + + /* Append to the modification log. */ + data = page_zip->data + page_zip->m_end; + ut_ad(!*data); + + /* Identify the record by writing its heap number - 1. + 0 is reserved to indicate the end of the modification log. */ + + if (UNIV_UNLIKELY(heap_no - 1 >= 64)) { + *data++ = (byte) (0x80 | (heap_no - 1) >> 7); + ut_ad(!*data); + } + *data++ = (byte) ((heap_no - 1) << 1); + ut_ad(!*data); + + { + const byte* start = rec - rec_offs_extra_size(offsets); + const byte* b = rec - REC_N_NEW_EXTRA_BYTES; + + /* Write the extra bytes backwards, so that + rec_offs_extra_size() can be easily computed in + page_zip_apply_log() by invoking + rec_get_offsets_reverse(). */ + + while (b != start) { + *data++ = *--b; + ut_ad(!*data); + } + } + + /* Write the data bytes. Store the uncompressed bytes separately. */ + storage = page_zip->data + page_zip_get_size(page_zip) + - (page_dir_get_n_heap(page) - PAGE_HEAP_NO_USER_LOW) + * PAGE_ZIP_DIR_SLOT_SIZE; + + if (page_is_leaf(page)) { + ulint len; + + if (dict_index_is_clust(index)) { + ulint trx_id_col; + + trx_id_col = dict_index_get_sys_col_pos(index, + DATA_TRX_ID); + ut_ad(trx_id_col != ULINT_UNDEFINED); + + /* Store separately trx_id, roll_ptr and + the BTR_EXTERN_FIELD_REF of each BLOB column. */ + if (rec_offs_any_extern(offsets)) { + data = page_zip_write_rec_ext( + page_zip, page, + rec, index, offsets, create, + trx_id_col, heap_no, storage, data); + } else { + /* Locate trx_id and roll_ptr. */ + const byte* src + = rec_get_nth_field(rec, offsets, + trx_id_col, &len); + ut_ad(len == DATA_TRX_ID_LEN); + ut_ad(src + DATA_TRX_ID_LEN + == rec_get_nth_field( + rec, offsets, + trx_id_col + 1, &len)); + ut_ad(len == DATA_ROLL_PTR_LEN); + + /* Log the preceding fields. */ + ASSERT_ZERO(data, src - rec); + memcpy(data, rec, src - rec); + data += src - rec; + + /* Store trx_id and roll_ptr. */ + memcpy(storage + - (DATA_TRX_ID_LEN + DATA_ROLL_PTR_LEN) + * (heap_no - 1), + src, + DATA_TRX_ID_LEN + DATA_ROLL_PTR_LEN); + + src += DATA_TRX_ID_LEN + DATA_ROLL_PTR_LEN; + + /* Log the last bytes of the record. */ + len = rec_offs_data_size(offsets) + - (src - rec); + + ASSERT_ZERO(data, len); + memcpy(data, src, len); + data += len; + } + } else { + /* Leaf page of a secondary index: + no externally stored columns */ + ut_ad(dict_index_get_sys_col_pos(index, DATA_TRX_ID) + == ULINT_UNDEFINED); + ut_ad(!rec_offs_any_extern(offsets)); + + /* Log the entire record. */ + len = rec_offs_data_size(offsets); + + ASSERT_ZERO(data, len); + memcpy(data, rec, len); + data += len; + } + } else { + /* This is a node pointer page. */ + ulint len; + + /* Non-leaf nodes should not have any externally + stored columns. */ + ut_ad(!rec_offs_any_extern(offsets)); + + /* Copy the data bytes, except node_ptr. */ + len = rec_offs_data_size(offsets) - REC_NODE_PTR_SIZE; + ut_ad(data + len < storage - REC_NODE_PTR_SIZE + * (page_dir_get_n_heap(page) - PAGE_HEAP_NO_USER_LOW)); + ASSERT_ZERO(data, len); + memcpy(data, rec, len); + data += len; + + /* Copy the node pointer to the uncompressed area. */ + memcpy(storage - REC_NODE_PTR_SIZE + * (heap_no - 1), + rec + len, + REC_NODE_PTR_SIZE); + } + + ut_a(!*data); + ut_ad((ulint) (data - page_zip->data) < page_zip_get_size(page_zip)); + page_zip->m_end = data - page_zip->data; + page_zip->m_nonempty = TRUE; + +#ifdef UNIV_ZIP_DEBUG + ut_a(page_zip_validate(page_zip, page_align(rec))); +#endif /* UNIV_ZIP_DEBUG */ +} + +/*************************************************************** +Parses a log record of writing a BLOB pointer of a record. */ +UNIV_INTERN +byte* +page_zip_parse_write_blob_ptr( +/*==========================*/ + /* out: end of log record or NULL */ + byte* ptr, /* in: redo log buffer */ + byte* end_ptr,/* in: redo log buffer end */ + page_t* page, /* in/out: uncompressed page */ + page_zip_des_t* page_zip)/* in/out: compressed page */ +{ + ulint offset; + ulint z_offset; + + ut_ad(!page == !page_zip); + + if (UNIV_UNLIKELY + (end_ptr < ptr + (2 + 2 + BTR_EXTERN_FIELD_REF_SIZE))) { + + return(NULL); + } + + offset = mach_read_from_2(ptr); + z_offset = mach_read_from_2(ptr + 2); + + if (UNIV_UNLIKELY(offset < PAGE_ZIP_START) + || UNIV_UNLIKELY(offset >= UNIV_PAGE_SIZE) + || UNIV_UNLIKELY(z_offset >= UNIV_PAGE_SIZE)) { +corrupt: + recv_sys->found_corrupt_log = TRUE; + + return(NULL); + } + + if (page) { + if (UNIV_UNLIKELY(!page_zip) + || UNIV_UNLIKELY(!page_is_leaf(page))) { + + goto corrupt; + } + +#ifdef UNIV_ZIP_DEBUG + ut_a(page_zip_validate(page_zip, page)); +#endif /* UNIV_ZIP_DEBUG */ + + memcpy(page + offset, + ptr + 4, BTR_EXTERN_FIELD_REF_SIZE); + memcpy(page_zip->data + z_offset, + ptr + 4, BTR_EXTERN_FIELD_REF_SIZE); + +#ifdef UNIV_ZIP_DEBUG + ut_a(page_zip_validate(page_zip, page)); +#endif /* UNIV_ZIP_DEBUG */ + } + + return(ptr + (2 + 2 + BTR_EXTERN_FIELD_REF_SIZE)); +} + +/************************************************************************** +Write a BLOB pointer of a record on the leaf page of a clustered index. +The information must already have been updated on the uncompressed page. */ +UNIV_INTERN +void +page_zip_write_blob_ptr( +/*====================*/ + page_zip_des_t* page_zip,/* in/out: compressed page */ + const byte* rec, /* in/out: record whose data is being + written */ + dict_index_t* index, /* in: index of the page */ + const ulint* offsets,/* in: rec_get_offsets(rec, index) */ + ulint n, /* in: column index */ + mtr_t* mtr) /* in: mini-transaction handle, + or NULL if no logging is needed */ +{ + const byte* field; + byte* externs; + const page_t* page = page_align(rec); + ulint blob_no; + ulint len; + + ut_ad(buf_frame_get_page_zip(rec) == page_zip); + ut_ad(page_simple_validate_new((page_t*) page)); + ut_ad(page_zip_simple_validate(page_zip)); + ut_ad(page_zip_get_size(page_zip) + > PAGE_DATA + page_zip_dir_size(page_zip)); + ut_ad(rec_offs_comp(offsets)); + ut_ad(rec_offs_validate(rec, NULL, offsets)); + ut_ad(rec_offs_any_extern(offsets)); + ut_ad(rec_offs_nth_extern(offsets, n)); + + ut_ad(page_zip->m_start >= PAGE_DATA); + ut_ad(page_zip_header_cmp(page_zip, page)); + + ut_ad(page_is_leaf(page)); + ut_ad(dict_index_is_clust(index)); + + UNIV_MEM_ASSERT_RW(page_zip->data, page_zip_get_size(page_zip)); + UNIV_MEM_ASSERT_RW(rec, rec_offs_data_size(offsets)); + UNIV_MEM_ASSERT_RW(rec - rec_offs_extra_size(offsets), + rec_offs_extra_size(offsets)); + + blob_no = page_zip_get_n_prev_extern(page_zip, rec, index) + + rec_get_n_extern_new(rec, index, n); + ut_a(blob_no < page_zip->n_blobs); + + externs = page_zip->data + page_zip_get_size(page_zip) + - (page_dir_get_n_heap(page) - PAGE_HEAP_NO_USER_LOW) + * (PAGE_ZIP_DIR_SLOT_SIZE + + DATA_TRX_ID_LEN + DATA_ROLL_PTR_LEN); + + field = rec_get_nth_field(rec, offsets, n, &len); + + externs -= (blob_no + 1) * BTR_EXTERN_FIELD_REF_SIZE; + field += len - BTR_EXTERN_FIELD_REF_SIZE; + + memcpy(externs, field, BTR_EXTERN_FIELD_REF_SIZE); + +#ifdef UNIV_ZIP_DEBUG + ut_a(page_zip_validate(page_zip, page)); +#endif /* UNIV_ZIP_DEBUG */ + + if (mtr) { + byte* log_ptr = mlog_open( + mtr, 11 + 2 + 2 + BTR_EXTERN_FIELD_REF_SIZE); + if (UNIV_UNLIKELY(!log_ptr)) { + return; + } + + log_ptr = mlog_write_initial_log_record_fast( + (byte*) field, MLOG_ZIP_WRITE_BLOB_PTR, log_ptr, mtr); + mach_write_to_2(log_ptr, page_offset(field)); + log_ptr += 2; + mach_write_to_2(log_ptr, externs - page_zip->data); + log_ptr += 2; + memcpy(log_ptr, externs, BTR_EXTERN_FIELD_REF_SIZE); + log_ptr += BTR_EXTERN_FIELD_REF_SIZE; + mlog_close(mtr, log_ptr); + } +} + +/*************************************************************** +Parses a log record of writing the node pointer of a record. */ +UNIV_INTERN +byte* +page_zip_parse_write_node_ptr( +/*==========================*/ + /* out: end of log record or NULL */ + byte* ptr, /* in: redo log buffer */ + byte* end_ptr,/* in: redo log buffer end */ + page_t* page, /* in/out: uncompressed page */ + page_zip_des_t* page_zip)/* in/out: compressed page */ +{ + ulint offset; + ulint z_offset; + + ut_ad(!page == !page_zip); + + if (UNIV_UNLIKELY(end_ptr < ptr + (2 + 2 + REC_NODE_PTR_SIZE))) { + + return(NULL); + } + + offset = mach_read_from_2(ptr); + z_offset = mach_read_from_2(ptr + 2); + + if (UNIV_UNLIKELY(offset < PAGE_ZIP_START) + || UNIV_UNLIKELY(offset >= UNIV_PAGE_SIZE) + || UNIV_UNLIKELY(z_offset >= UNIV_PAGE_SIZE)) { +corrupt: + recv_sys->found_corrupt_log = TRUE; + + return(NULL); + } + + if (page) { + byte* storage_end; + byte* field; + byte* storage; + ulint heap_no; + + if (UNIV_UNLIKELY(!page_zip) + || UNIV_UNLIKELY(page_is_leaf(page))) { + + goto corrupt; + } + +#ifdef UNIV_ZIP_DEBUG + ut_a(page_zip_validate(page_zip, page)); +#endif /* UNIV_ZIP_DEBUG */ + + field = page + offset; + storage = page_zip->data + z_offset; + + storage_end = page_zip->data + page_zip_get_size(page_zip) + - (page_dir_get_n_heap(page) - PAGE_HEAP_NO_USER_LOW) + * PAGE_ZIP_DIR_SLOT_SIZE; + + heap_no = 1 + (storage_end - storage) / REC_NODE_PTR_SIZE; + + if (UNIV_UNLIKELY((storage_end - storage) % REC_NODE_PTR_SIZE) + || UNIV_UNLIKELY(heap_no < PAGE_HEAP_NO_USER_LOW) + || UNIV_UNLIKELY(heap_no >= page_dir_get_n_heap(page))) { + + goto corrupt; + } + + memcpy(field, ptr + 4, REC_NODE_PTR_SIZE); + memcpy(storage, ptr + 4, REC_NODE_PTR_SIZE); + +#ifdef UNIV_ZIP_DEBUG + ut_a(page_zip_validate(page_zip, page)); +#endif /* UNIV_ZIP_DEBUG */ + } + + return(ptr + (2 + 2 + REC_NODE_PTR_SIZE)); +} + +/************************************************************************** +Write the node pointer of a record on a non-leaf compressed page. */ +UNIV_INTERN +void +page_zip_write_node_ptr( +/*====================*/ + page_zip_des_t* page_zip,/* in/out: compressed page */ + byte* rec, /* in/out: record */ + ulint size, /* in: data size of rec */ + ulint ptr, /* in: node pointer */ + mtr_t* mtr) /* in: mini-transaction, or NULL */ +{ + byte* field; + byte* storage; + page_t* page = page_align(rec); + + ut_ad(buf_frame_get_page_zip(rec) == page_zip); + ut_ad(page_simple_validate_new(page)); + ut_ad(page_zip_simple_validate(page_zip)); + ut_ad(page_zip_get_size(page_zip) + > PAGE_DATA + page_zip_dir_size(page_zip)); + ut_ad(page_rec_is_comp(rec)); + + ut_ad(page_zip->m_start >= PAGE_DATA); + ut_ad(page_zip_header_cmp(page_zip, page)); + + ut_ad(!page_is_leaf(page)); + + UNIV_MEM_ASSERT_RW(page_zip->data, page_zip_get_size(page_zip)); + UNIV_MEM_ASSERT_RW(rec, size); + + storage = page_zip->data + page_zip_get_size(page_zip) + - (page_dir_get_n_heap(page) - PAGE_HEAP_NO_USER_LOW) + * PAGE_ZIP_DIR_SLOT_SIZE + - (rec_get_heap_no_new(rec) - 1) * REC_NODE_PTR_SIZE; + field = rec + size - REC_NODE_PTR_SIZE; + +#if defined UNIV_DEBUG || defined UNIV_ZIP_DEBUG + ut_a(!memcmp(storage, field, REC_NODE_PTR_SIZE)); +#endif /* UNIV_DEBUG || UNIV_ZIP_DEBUG */ +#if REC_NODE_PTR_SIZE != 4 +# error "REC_NODE_PTR_SIZE != 4" +#endif + mach_write_to_4(field, ptr); + memcpy(storage, field, REC_NODE_PTR_SIZE); + + if (mtr) { + byte* log_ptr = mlog_open(mtr, + 11 + 2 + 2 + REC_NODE_PTR_SIZE); + if (UNIV_UNLIKELY(!log_ptr)) { + return; + } + + log_ptr = mlog_write_initial_log_record_fast( + field, MLOG_ZIP_WRITE_NODE_PTR, log_ptr, mtr); + mach_write_to_2(log_ptr, page_offset(field)); + log_ptr += 2; + mach_write_to_2(log_ptr, storage - page_zip->data); + log_ptr += 2; + memcpy(log_ptr, field, REC_NODE_PTR_SIZE); + log_ptr += REC_NODE_PTR_SIZE; + mlog_close(mtr, log_ptr); + } +} + +/************************************************************************** +Write the trx_id and roll_ptr of a record on a B-tree leaf node page. */ +UNIV_INTERN +void +page_zip_write_trx_id_and_roll_ptr( +/*===============================*/ + page_zip_des_t* page_zip,/* in/out: compressed page */ + byte* rec, /* in/out: record */ + const ulint* offsets,/* in: rec_get_offsets(rec, index) */ + ulint trx_id_col,/* in: column number of TRX_ID in rec */ + dulint trx_id, /* in: transaction identifier */ + dulint roll_ptr)/* in: roll_ptr */ +{ + byte* field; + byte* storage; + page_t* page = page_align(rec); + ulint len; + + ut_ad(buf_frame_get_page_zip(rec) == page_zip); + ut_ad(page_simple_validate_new(page)); + ut_ad(page_zip_simple_validate(page_zip)); + ut_ad(page_zip_get_size(page_zip) + > PAGE_DATA + page_zip_dir_size(page_zip)); + ut_ad(rec_offs_validate(rec, NULL, offsets)); + ut_ad(rec_offs_comp(offsets)); + + ut_ad(page_zip->m_start >= PAGE_DATA); + ut_ad(page_zip_header_cmp(page_zip, page)); + + ut_ad(page_is_leaf(page)); + + UNIV_MEM_ASSERT_RW(page_zip->data, page_zip_get_size(page_zip)); + + storage = page_zip->data + page_zip_get_size(page_zip) + - (page_dir_get_n_heap(page) - PAGE_HEAP_NO_USER_LOW) + * PAGE_ZIP_DIR_SLOT_SIZE + - (rec_get_heap_no_new(rec) - 1) + * (DATA_TRX_ID_LEN + DATA_ROLL_PTR_LEN); + +#if DATA_TRX_ID + 1 != DATA_ROLL_PTR +# error "DATA_TRX_ID + 1 != DATA_ROLL_PTR" +#endif + field = rec_get_nth_field(rec, offsets, trx_id_col, &len); + ut_ad(len == DATA_TRX_ID_LEN); + ut_ad(field + DATA_TRX_ID_LEN + == rec_get_nth_field(rec, offsets, trx_id_col + 1, &len)); + ut_ad(len == DATA_ROLL_PTR_LEN); +#if defined UNIV_DEBUG || defined UNIV_ZIP_DEBUG + ut_a(!memcmp(storage, field, DATA_TRX_ID_LEN + DATA_ROLL_PTR_LEN)); +#endif /* UNIV_DEBUG || UNIV_ZIP_DEBUG */ +#if DATA_TRX_ID_LEN != 6 +# error "DATA_TRX_ID_LEN != 6" +#endif + mach_write_to_6(field, trx_id); +#if DATA_ROLL_PTR_LEN != 7 +# error "DATA_ROLL_PTR_LEN != 7" +#endif + mach_write_to_7(field + DATA_TRX_ID_LEN, roll_ptr); + memcpy(storage, field, DATA_TRX_ID_LEN + DATA_ROLL_PTR_LEN); + + UNIV_MEM_ASSERT_RW(rec, rec_offs_data_size(offsets)); + UNIV_MEM_ASSERT_RW(rec - rec_offs_extra_size(offsets), + rec_offs_extra_size(offsets)); + UNIV_MEM_ASSERT_RW(page_zip->data, page_zip_get_size(page_zip)); +} + +#ifdef UNIV_ZIP_DEBUG +/* Set this variable in a debugger to disable page_zip_clear_rec(). +The only observable effect should be the compression ratio due to +deleted records not being zeroed out. In rare cases, there can be +page_zip_validate() failures on the node_ptr, trx_id and roll_ptr +columns if the space is reallocated for a smaller record. */ +UNIV_INTERN ibool page_zip_clear_rec_disable; +#endif /* UNIV_ZIP_DEBUG */ + +/************************************************************************** +Clear an area on the uncompressed and compressed page, if possible. */ +static +void +page_zip_clear_rec( +/*===============*/ + page_zip_des_t* page_zip,/* in/out: compressed page */ + byte* rec, /* in: record to clear */ + dict_index_t* index, /* in: index of rec */ + const ulint* offsets)/* in: rec_get_offsets(rec, index) */ +{ + ulint heap_no; + page_t* page = page_align(rec); + /* page_zip_validate() would fail here if a record + containing externally stored columns is being deleted. */ + ut_ad(rec_offs_validate(rec, index, offsets)); + ut_ad(!page_zip_dir_find(page_zip, page_offset(rec))); + ut_ad(page_zip_dir_find_free(page_zip, page_offset(rec))); + ut_ad(page_zip_header_cmp(page_zip, page)); + + heap_no = rec_get_heap_no_new(rec); + ut_ad(heap_no >= PAGE_HEAP_NO_USER_LOW); + + UNIV_MEM_ASSERT_RW(page_zip->data, page_zip_get_size(page_zip)); + UNIV_MEM_ASSERT_RW(rec, rec_offs_data_size(offsets)); + UNIV_MEM_ASSERT_RW(rec - rec_offs_extra_size(offsets), + rec_offs_extra_size(offsets)); + + if ( +#ifdef UNIV_ZIP_DEBUG + !page_zip_clear_rec_disable && +#endif /* UNIV_ZIP_DEBUG */ + page_zip->m_end + + 1 + ((heap_no - 1) >= 64)/* size of the log entry */ + + page_zip_get_trailer_len(page_zip, + dict_index_is_clust(index), NULL) + < page_zip_get_size(page_zip)) { + byte* data; + + /* Clear only the data bytes, because the allocator and + the decompressor depend on the extra bytes. */ + memset(rec, 0, rec_offs_data_size(offsets)); + + if (!page_is_leaf(page)) { + /* Clear node_ptr on the compressed page. */ + byte* storage = page_zip->data + + page_zip_get_size(page_zip) + - (page_dir_get_n_heap(page) + - PAGE_HEAP_NO_USER_LOW) + * PAGE_ZIP_DIR_SLOT_SIZE; + + memset(storage - (heap_no - 1) * REC_NODE_PTR_SIZE, + 0, REC_NODE_PTR_SIZE); + } else if (dict_index_is_clust(index)) { + /* Clear trx_id and roll_ptr on the compressed page. */ + byte* storage = page_zip->data + + page_zip_get_size(page_zip) + - (page_dir_get_n_heap(page) + - PAGE_HEAP_NO_USER_LOW) + * PAGE_ZIP_DIR_SLOT_SIZE; + + memset(storage - (heap_no - 1) + * (DATA_TRX_ID_LEN + DATA_ROLL_PTR_LEN), + 0, DATA_TRX_ID_LEN + DATA_ROLL_PTR_LEN); + } + + /* Log that the data was zeroed out. */ + data = page_zip->data + page_zip->m_end; + ut_ad(!*data); + if (UNIV_UNLIKELY(heap_no - 1 >= 64)) { + *data++ = (byte) (0x80 | (heap_no - 1) >> 7); + ut_ad(!*data); + } + *data++ = (byte) ((heap_no - 1) << 1 | 1); + ut_ad(!*data); + ut_ad((ulint) (data - page_zip->data) + < page_zip_get_size(page_zip)); + page_zip->m_end = data - page_zip->data; + page_zip->m_nonempty = TRUE; + } else if (page_is_leaf(page) && dict_index_is_clust(index)) { + /* Do not clear the record, because there is not enough space + to log the operation. */ + + if (rec_offs_any_extern(offsets)) { + ulint i; + + for (i = rec_offs_n_fields(offsets); i--; ) { + /* Clear all BLOB pointers in order to make + page_zip_validate() pass. */ + if (rec_offs_nth_extern(offsets, i)) { + ulint len; + byte* field = rec_get_nth_field( + rec, offsets, i, &len); + memset(field + len + - BTR_EXTERN_FIELD_REF_SIZE, + 0, BTR_EXTERN_FIELD_REF_SIZE); + } + } + } + } + +#ifdef UNIV_ZIP_DEBUG + ut_a(page_zip_validate(page_zip, page)); +#endif /* UNIV_ZIP_DEBUG */ +} + +/************************************************************************** +Write the "deleted" flag of a record on a compressed page. The flag must +already have been written on the uncompressed page. */ +UNIV_INTERN +void +page_zip_rec_set_deleted( +/*=====================*/ + page_zip_des_t* page_zip,/* in/out: compressed page */ + const byte* rec, /* in: record on the uncompressed page */ + ulint flag) /* in: the deleted flag (nonzero=TRUE) */ +{ + byte* slot = page_zip_dir_find(page_zip, page_offset(rec)); + ut_a(slot); + UNIV_MEM_ASSERT_RW(page_zip->data, page_zip_get_size(page_zip)); + if (flag) { + *slot |= (PAGE_ZIP_DIR_SLOT_DEL >> 8); + } else { + *slot &= ~(PAGE_ZIP_DIR_SLOT_DEL >> 8); + } +#ifdef UNIV_ZIP_DEBUG + ut_a(page_zip_validate(page_zip, page_align(rec))); +#endif /* UNIV_ZIP_DEBUG */ +} + +/************************************************************************** +Write the "owned" flag of a record on a compressed page. The n_owned field +must already have been written on the uncompressed page. */ +UNIV_INTERN +void +page_zip_rec_set_owned( +/*===================*/ + page_zip_des_t* page_zip,/* in/out: compressed page */ + const byte* rec, /* in: record on the uncompressed page */ + ulint flag) /* in: the owned flag (nonzero=TRUE) */ +{ + byte* slot = page_zip_dir_find(page_zip, page_offset(rec)); + ut_a(slot); + UNIV_MEM_ASSERT_RW(page_zip->data, page_zip_get_size(page_zip)); + if (flag) { + *slot |= (PAGE_ZIP_DIR_SLOT_OWNED >> 8); + } else { + *slot &= ~(PAGE_ZIP_DIR_SLOT_OWNED >> 8); + } +} + +/************************************************************************** +Insert a record to the dense page directory. */ +UNIV_INTERN +void +page_zip_dir_insert( +/*================*/ + page_zip_des_t* page_zip,/* in/out: compressed page */ + const byte* prev_rec,/* in: record after which to insert */ + const byte* free_rec,/* in: record from which rec was + allocated, or NULL */ + byte* rec) /* in: record to insert */ +{ + ulint n_dense; + byte* slot_rec; + byte* slot_free; + + ut_ad(prev_rec != rec); + ut_ad(page_rec_get_next((rec_t*) prev_rec) == rec); + ut_ad(page_zip_simple_validate(page_zip)); + + UNIV_MEM_ASSERT_RW(page_zip->data, page_zip_get_size(page_zip)); + + if (page_rec_is_infimum(prev_rec)) { + /* Use the first slot. */ + slot_rec = page_zip->data + page_zip_get_size(page_zip); + } else { + byte* end = page_zip->data + page_zip_get_size(page_zip); + byte* start = end - page_zip_dir_user_size(page_zip); + + if (UNIV_LIKELY(!free_rec)) { + /* PAGE_N_RECS was already incremented + in page_cur_insert_rec_zip(), but the + dense directory slot at that position + contains garbage. Skip it. */ + start += PAGE_ZIP_DIR_SLOT_SIZE; + } + + slot_rec = page_zip_dir_find_low(start, end, + page_offset(prev_rec)); + ut_a(slot_rec); + } + + /* Read the old n_dense (n_heap may have been incremented). */ + n_dense = page_dir_get_n_heap(page_zip->data) + - (PAGE_HEAP_NO_USER_LOW + 1); + + if (UNIV_LIKELY_NULL(free_rec)) { + /* The record was allocated from the free list. + Shift the dense directory only up to that slot. + Note that in this case, n_dense is actually + off by one, because page_cur_insert_rec_zip() + did not increment n_heap. */ + ut_ad(rec_get_heap_no_new(rec) < n_dense + 1 + + PAGE_HEAP_NO_USER_LOW); + ut_ad(rec >= free_rec); + slot_free = page_zip_dir_find(page_zip, page_offset(free_rec)); + ut_ad(slot_free); + slot_free += PAGE_ZIP_DIR_SLOT_SIZE; + } else { + /* The record was allocated from the heap. + Shift the entire dense directory. */ + ut_ad(rec_get_heap_no_new(rec) == n_dense + + PAGE_HEAP_NO_USER_LOW); + + /* Shift to the end of the dense page directory. */ + slot_free = page_zip->data + page_zip_get_size(page_zip) + - PAGE_ZIP_DIR_SLOT_SIZE * n_dense; + } + + /* Shift the dense directory to allocate place for rec. */ + memmove(slot_free - PAGE_ZIP_DIR_SLOT_SIZE, slot_free, + slot_rec - slot_free); + + /* Write the entry for the inserted record. + The "owned" and "deleted" flags must be zero. */ + mach_write_to_2(slot_rec - PAGE_ZIP_DIR_SLOT_SIZE, page_offset(rec)); +} + +/************************************************************************** +Shift the dense page directory and the array of BLOB pointers +when a record is deleted. */ +UNIV_INTERN +void +page_zip_dir_delete( +/*================*/ + page_zip_des_t* page_zip,/* in/out: compressed page */ + byte* rec, /* in: record to delete */ + dict_index_t* index, /* in: index of rec */ + const ulint* offsets,/* in: rec_get_offsets(rec) */ + const byte* free) /* in: previous start of the free list */ +{ + byte* slot_rec; + byte* slot_free; + ulint n_ext; + page_t* page = page_align(rec); + + ut_ad(rec_offs_validate(rec, index, offsets)); + ut_ad(rec_offs_comp(offsets)); + + UNIV_MEM_ASSERT_RW(page_zip->data, page_zip_get_size(page_zip)); + UNIV_MEM_ASSERT_RW(rec, rec_offs_data_size(offsets)); + UNIV_MEM_ASSERT_RW(rec - rec_offs_extra_size(offsets), + rec_offs_extra_size(offsets)); + + slot_rec = page_zip_dir_find(page_zip, page_offset(rec)); + + ut_a(slot_rec); + + /* This could not be done before page_zip_dir_find(). */ + page_header_set_field(page, page_zip, PAGE_N_RECS, + (ulint)(page_get_n_recs(page) - 1)); + + if (UNIV_UNLIKELY(!free)) { + /* Make the last slot the start of the free list. */ + slot_free = page_zip->data + page_zip_get_size(page_zip) + - PAGE_ZIP_DIR_SLOT_SIZE + * (page_dir_get_n_heap(page_zip->data) + - PAGE_HEAP_NO_USER_LOW); + } else { + slot_free = page_zip_dir_find_free(page_zip, + page_offset(free)); + ut_a(slot_free < slot_rec); + /* Grow the free list by one slot by moving the start. */ + slot_free += PAGE_ZIP_DIR_SLOT_SIZE; + } + + if (UNIV_LIKELY(slot_rec > slot_free)) { + memmove(slot_free + PAGE_ZIP_DIR_SLOT_SIZE, + slot_free, + slot_rec - slot_free); + } + + /* Write the entry for the deleted record. + The "owned" and "deleted" flags will be cleared. */ + mach_write_to_2(slot_free, page_offset(rec)); + + if (!page_is_leaf(page) || !dict_index_is_clust(index)) { + ut_ad(!rec_offs_any_extern(offsets)); + goto skip_blobs; + } + + n_ext = rec_offs_n_extern(offsets); + if (UNIV_UNLIKELY(n_ext)) { + /* Shift and zero fill the array of BLOB pointers. */ + ulint blob_no; + byte* externs; + byte* ext_end; + + blob_no = page_zip_get_n_prev_extern(page_zip, rec, index); + ut_a(blob_no + n_ext <= page_zip->n_blobs); + + externs = page_zip->data + page_zip_get_size(page_zip) + - (page_dir_get_n_heap(page) - PAGE_HEAP_NO_USER_LOW) + * (PAGE_ZIP_DIR_SLOT_SIZE + + DATA_TRX_ID_LEN + DATA_ROLL_PTR_LEN); + + ext_end = externs - page_zip->n_blobs + * BTR_EXTERN_FIELD_REF_SIZE; + externs -= blob_no * BTR_EXTERN_FIELD_REF_SIZE; + + page_zip->n_blobs -= n_ext; + /* Shift and zero fill the array. */ + memmove(ext_end + n_ext * BTR_EXTERN_FIELD_REF_SIZE, ext_end, + (page_zip->n_blobs - blob_no) + * BTR_EXTERN_FIELD_REF_SIZE); + memset(ext_end, 0, n_ext * BTR_EXTERN_FIELD_REF_SIZE); + } + +skip_blobs: + /* The compression algorithm expects info_bits and n_owned + to be 0 for deleted records. */ + rec[-REC_N_NEW_EXTRA_BYTES] = 0; /* info_bits and n_owned */ + + page_zip_clear_rec(page_zip, rec, index, offsets); +} + +/************************************************************************** +Add a slot to the dense page directory. */ +UNIV_INTERN +void +page_zip_dir_add_slot( +/*==================*/ + page_zip_des_t* page_zip, /* in/out: compressed page */ + ulint is_clustered) /* in: nonzero for clustered index, + zero for others */ +{ + ulint n_dense; + byte* dir; + byte* stored; + + ut_ad(page_is_comp(page_zip->data)); + UNIV_MEM_ASSERT_RW(page_zip->data, page_zip_get_size(page_zip)); + + /* Read the old n_dense (n_heap has already been incremented). */ + n_dense = page_dir_get_n_heap(page_zip->data) + - (PAGE_HEAP_NO_USER_LOW + 1); + + dir = page_zip->data + page_zip_get_size(page_zip) + - PAGE_ZIP_DIR_SLOT_SIZE * n_dense; + + if (!page_is_leaf(page_zip->data)) { + ut_ad(!page_zip->n_blobs); + stored = dir - n_dense * REC_NODE_PTR_SIZE; + } else if (UNIV_UNLIKELY(is_clustered)) { + /* Move the BLOB pointer array backwards to make space for the + roll_ptr and trx_id columns and the dense directory slot. */ + byte* externs; + + stored = dir - n_dense + * (DATA_TRX_ID_LEN + DATA_ROLL_PTR_LEN); + externs = stored + - page_zip->n_blobs * BTR_EXTERN_FIELD_REF_SIZE; + ASSERT_ZERO(externs + - (PAGE_ZIP_DIR_SLOT_SIZE + + DATA_TRX_ID_LEN + DATA_ROLL_PTR_LEN), + PAGE_ZIP_DIR_SLOT_SIZE + + DATA_TRX_ID_LEN + DATA_ROLL_PTR_LEN); + memmove(externs - (PAGE_ZIP_DIR_SLOT_SIZE + + DATA_TRX_ID_LEN + DATA_ROLL_PTR_LEN), + externs, stored - externs); + } else { + stored = dir + - page_zip->n_blobs * BTR_EXTERN_FIELD_REF_SIZE; + ASSERT_ZERO(stored - PAGE_ZIP_DIR_SLOT_SIZE, + PAGE_ZIP_DIR_SLOT_SIZE); + } + + /* Move the uncompressed area backwards to make space + for one directory slot. */ + memmove(stored - PAGE_ZIP_DIR_SLOT_SIZE, stored, dir - stored); +} + +/*************************************************************** +Parses a log record of writing to the header of a page. */ +UNIV_INTERN +byte* +page_zip_parse_write_header( +/*========================*/ + /* out: end of log record or NULL */ + byte* ptr, /* in: redo log buffer */ + byte* end_ptr,/* in: redo log buffer end */ + page_t* page, /* in/out: uncompressed page */ + page_zip_des_t* page_zip)/* in/out: compressed page */ +{ + ulint offset; + ulint len; + + ut_ad(ptr && end_ptr); + ut_ad(!page == !page_zip); + + if (UNIV_UNLIKELY(end_ptr < ptr + (1 + 1))) { + + return(NULL); + } + + offset = (ulint) *ptr++; + len = (ulint) *ptr++; + + if (UNIV_UNLIKELY(!len) || UNIV_UNLIKELY(offset + len >= PAGE_DATA)) { +corrupt: + recv_sys->found_corrupt_log = TRUE; + + return(NULL); + } + + if (UNIV_UNLIKELY(end_ptr < ptr + len)) { + + return(NULL); + } + + if (page) { + if (UNIV_UNLIKELY(!page_zip)) { + + goto corrupt; + } +#ifdef UNIV_ZIP_DEBUG + ut_a(page_zip_validate(page_zip, page)); +#endif /* UNIV_ZIP_DEBUG */ + + memcpy(page + offset, ptr, len); + memcpy(page_zip->data + offset, ptr, len); + +#ifdef UNIV_ZIP_DEBUG + ut_a(page_zip_validate(page_zip, page)); +#endif /* UNIV_ZIP_DEBUG */ + } + + return(ptr + len); +} + +/************************************************************************** +Write a log record of writing to the uncompressed header portion of a page. */ +UNIV_INTERN +void +page_zip_write_header_log( +/*======================*/ + const byte* data, /* in: data on the uncompressed page */ + ulint length, /* in: length of the data */ + mtr_t* mtr) /* in: mini-transaction */ +{ + byte* log_ptr = mlog_open(mtr, 11 + 1 + 1); + ulint offset = page_offset(data); + + ut_ad(offset < PAGE_DATA); + ut_ad(offset + length < PAGE_DATA); +#if PAGE_DATA > 255 +# error "PAGE_DATA > 255" +#endif + ut_ad(length < 256); + + /* If no logging is requested, we may return now */ + if (UNIV_UNLIKELY(!log_ptr)) { + + return; + } + + log_ptr = mlog_write_initial_log_record_fast( + (byte*) data, MLOG_ZIP_WRITE_HEADER, log_ptr, mtr); + *log_ptr++ = (byte) offset; + *log_ptr++ = (byte) length; + mlog_close(mtr, log_ptr); + + mlog_catenate_string(mtr, data, length); +} + +/************************************************************************** +Reorganize and compress a page. This is a low-level operation for +compressed pages, to be used when page_zip_compress() fails. +On success, a redo log entry MLOG_ZIP_PAGE_COMPRESS will be written. +The function btr_page_reorganize() should be preferred whenever possible. +IMPORTANT: if page_zip_reorganize() is invoked on a leaf page of a +non-clustered index, the caller must update the insert buffer free +bits in the same mini-transaction in such a way that the modification +will be redo-logged. */ +UNIV_INTERN +ibool +page_zip_reorganize( +/*================*/ + /* out: TRUE on success, FALSE on failure; + page and page_zip will be left intact + on failure. */ + buf_block_t* block, /* in/out: page with compressed page; + on the compressed page, in: size; + out: data, n_blobs, + m_start, m_end, m_nonempty */ + dict_index_t* index, /* in: index of the B-tree node */ + mtr_t* mtr) /* in: mini-transaction */ +{ + page_zip_des_t* page_zip = buf_block_get_page_zip(block); + page_t* page = buf_block_get_frame(block); + buf_block_t* temp_block; + page_t* temp_page; + ulint log_mode; + + ut_ad(mtr_memo_contains(mtr, block, MTR_MEMO_PAGE_X_FIX)); + ut_ad(page_is_comp(page)); + /* Note that page_zip_validate(page_zip, page) may fail here. */ + UNIV_MEM_ASSERT_RW(page, UNIV_PAGE_SIZE); + UNIV_MEM_ASSERT_RW(page_zip->data, page_zip_get_size(page_zip)); + + /* Disable logging */ + log_mode = mtr_set_log_mode(mtr, MTR_LOG_NONE); + + temp_block = buf_block_alloc(0); + temp_page = temp_block->frame; + + btr_search_drop_page_hash_index(block); + + /* Copy the old page to temporary space */ + buf_frame_copy(temp_page, page); + + /* Recreate the page: note that global data on page (possible + segment headers, next page-field, etc.) is preserved intact */ + + page_create(block, mtr, TRUE); + block->check_index_page_at_flush = TRUE; + + /* Copy the records from the temporary space to the recreated page; + do not copy the lock bits yet */ + + page_copy_rec_list_end_no_locks(block, temp_block, + page_get_infimum_rec(temp_page), + index, mtr); + /* Copy max trx id to recreated page */ + page_set_max_trx_id(block, NULL, page_get_max_trx_id(temp_page)); + + /* Restore logging. */ + mtr_set_log_mode(mtr, log_mode); + + if (UNIV_UNLIKELY(!page_zip_compress(page_zip, page, index, mtr))) { + + /* Restore the old page and exit. */ + buf_frame_copy(page, temp_page); + + buf_block_free(temp_block); + return(FALSE); + } + + lock_move_reorganize_page(block, temp_block); + + buf_block_free(temp_block); + return(TRUE); +} + +/************************************************************************** +Copy the records of a page byte for byte. Do not copy the page header +or trailer, except those B-tree header fields that are directly +related to the storage of records. Also copy PAGE_MAX_TRX_ID. +NOTE: The caller must update the lock table and the adaptive hash index. */ +UNIV_INTERN +void +page_zip_copy_recs( +/*===============*/ + page_zip_des_t* page_zip, /* out: copy of src_zip + (n_blobs, m_start, m_end, + m_nonempty, data[0..size-1]) */ + page_t* page, /* out: copy of src */ + const page_zip_des_t* src_zip, /* in: compressed page */ + const page_t* src, /* in: page */ + dict_index_t* index, /* in: index of the B-tree */ + mtr_t* mtr) /* in: mini-transaction */ +{ + ut_ad(mtr_memo_contains_page(mtr, page, MTR_MEMO_PAGE_X_FIX)); + ut_ad(mtr_memo_contains_page(mtr, (page_t*) src, MTR_MEMO_PAGE_X_FIX)); +#ifdef UNIV_ZIP_DEBUG + /* The B-tree operations that call this function may set + FIL_PAGE_PREV or PAGE_LEVEL, causing a temporary min_rec_flag + mismatch. A strict page_zip_validate() will be executed later + during the B-tree operations. */ + ut_a(page_zip_validate_low(src_zip, src, TRUE)); +#endif /* UNIV_ZIP_DEBUG */ + ut_a(page_zip_get_size(page_zip) == page_zip_get_size(src_zip)); + if (UNIV_UNLIKELY(src_zip->n_blobs)) { + ut_a(page_is_leaf(src)); + ut_a(dict_index_is_clust(index)); + } + + UNIV_MEM_ASSERT_W(page, UNIV_PAGE_SIZE); + UNIV_MEM_ASSERT_W(page_zip->data, page_zip_get_size(page_zip)); + UNIV_MEM_ASSERT_RW(src, UNIV_PAGE_SIZE); + UNIV_MEM_ASSERT_RW(src_zip->data, page_zip_get_size(page_zip)); + + /* Copy those B-tree page header fields that are related to + the records stored in the page. Also copy the field + PAGE_MAX_TRX_ID. Skip the rest of the page header and + trailer. On the compressed page, there is no trailer. */ +#if PAGE_MAX_TRX_ID + 8 != PAGE_HEADER_PRIV_END +# error "PAGE_MAX_TRX_ID + 8 != PAGE_HEADER_PRIV_END" +#endif + memcpy(PAGE_HEADER + page, PAGE_HEADER + src, + PAGE_HEADER_PRIV_END); + memcpy(PAGE_DATA + page, PAGE_DATA + src, + UNIV_PAGE_SIZE - PAGE_DATA - FIL_PAGE_DATA_END); + memcpy(PAGE_HEADER + page_zip->data, PAGE_HEADER + src_zip->data, + PAGE_HEADER_PRIV_END); + memcpy(PAGE_DATA + page_zip->data, PAGE_DATA + src_zip->data, + page_zip_get_size(page_zip) - PAGE_DATA); + + /* Copy all fields of src_zip to page_zip, except the pointer + to the compressed data page. */ + { + page_zip_t* data = page_zip->data; + memcpy(page_zip, src_zip, sizeof *page_zip); + page_zip->data = data; + } + ut_ad(page_zip_get_trailer_len(page_zip, + dict_index_is_clust(index), NULL) + + page_zip->m_end < page_zip_get_size(page_zip)); + + if (!page_is_leaf(src) + && UNIV_UNLIKELY(mach_read_from_4(src + FIL_PAGE_PREV) == FIL_NULL) + && UNIV_LIKELY(mach_read_from_4(page + + FIL_PAGE_PREV) != FIL_NULL)) { + /* Clear the REC_INFO_MIN_REC_FLAG of the first user record. */ + ulint offs = rec_get_next_offs(page + PAGE_NEW_INFIMUM, + TRUE); + if (UNIV_LIKELY(offs != PAGE_NEW_SUPREMUM)) { + rec_t* rec = page + offs; + ut_a(rec[-REC_N_NEW_EXTRA_BYTES] + & REC_INFO_MIN_REC_FLAG); + rec[-REC_N_NEW_EXTRA_BYTES] &= ~ REC_INFO_MIN_REC_FLAG; + } + } + +#ifdef UNIV_ZIP_DEBUG + ut_a(page_zip_validate(page_zip, page)); +#endif /* UNIV_ZIP_DEBUG */ + + page_zip_compress_write_log(page_zip, page, index, mtr); +} + +/************************************************************************** +Parses a log record of compressing an index page. */ +UNIV_INTERN +byte* +page_zip_parse_compress( +/*====================*/ + /* out: end of log record or NULL */ + byte* ptr, /* in: buffer */ + byte* end_ptr,/* in: buffer end */ + page_t* page, /* out: uncompressed page */ + page_zip_des_t* page_zip)/* out: compressed page */ +{ + ulint size; + ulint trailer_size; + + ut_ad(ptr && end_ptr); + ut_ad(!page == !page_zip); + + if (UNIV_UNLIKELY(ptr + (2 + 2) > end_ptr)) { + + return(NULL); + } + + size = mach_read_from_2(ptr); + ptr += 2; + trailer_size = mach_read_from_2(ptr); + ptr += 2; + + if (UNIV_UNLIKELY(ptr + 8 + size + trailer_size > end_ptr)) { + + return(NULL); + } + + if (page) { + if (UNIV_UNLIKELY(!page_zip) + || UNIV_UNLIKELY(page_zip_get_size(page_zip) < size)) { +corrupt: + recv_sys->found_corrupt_log = TRUE; + + return(NULL); + } + + memcpy(page_zip->data + FIL_PAGE_PREV, ptr, 4); + memcpy(page_zip->data + FIL_PAGE_NEXT, ptr + 4, 4); + memcpy(page_zip->data + FIL_PAGE_TYPE, ptr + 8, size); + memset(page_zip->data + FIL_PAGE_TYPE + size, 0, + page_zip_get_size(page_zip) - trailer_size + - (FIL_PAGE_TYPE + size)); + memcpy(page_zip->data + page_zip_get_size(page_zip) + - trailer_size, ptr + 8 + size, trailer_size); + + if (UNIV_UNLIKELY(!page_zip_decompress(page_zip, page))) { + + goto corrupt; + } + } + + return(ptr + 8 + size + trailer_size); +} + +/************************************************************************** +Calculate the compressed page checksum. */ +UNIV_INTERN +ulint +page_zip_calc_checksum( +/*===================*/ + /* out: page checksum */ + const void* data, /* in: compressed page */ + ulint size) /* in: size of compressed page */ +{ + /* Exclude FIL_PAGE_SPACE_OR_CHKSUM, FIL_PAGE_LSN, + and FIL_PAGE_FILE_FLUSH_LSN from the checksum. */ + + const Bytef* s = data; + uLong adler; + + ut_ad(size > FIL_PAGE_ARCH_LOG_NO_OR_SPACE_ID); + + adler = adler32(0L, s + FIL_PAGE_OFFSET, + FIL_PAGE_LSN - FIL_PAGE_OFFSET); + adler = adler32(adler, s + FIL_PAGE_TYPE, 2); + adler = adler32(adler, s + FIL_PAGE_ARCH_LOG_NO_OR_SPACE_ID, + size - FIL_PAGE_ARCH_LOG_NO_OR_SPACE_ID); + + return((ulint) adler); +} === added directory 'storage/xtradb/pars' === added file 'storage/xtradb/pars/lexyy.c' --- a/storage/xtradb/pars/lexyy.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/pars/lexyy.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,2780 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +#include "univ.i" +#line 2 "lexyy.c" + +#line 4 "lexyy.c" + +#define YY_INT_ALIGNED short int + +/* A lexical scanner generated by flex */ + +#define FLEX_SCANNER +#define YY_FLEX_MAJOR_VERSION 2 +#define YY_FLEX_MINOR_VERSION 5 +#define YY_FLEX_SUBMINOR_VERSION 31 +#if YY_FLEX_SUBMINOR_VERSION > 0 +#define FLEX_BETA +#endif + +/* First, we deal with platform-specific or compiler-specific issues. */ + +/* begin standard C headers. */ +#include <stdio.h> +#include <string.h> +#include <errno.h> +#include <stdlib.h> + +/* end standard C headers. */ + +/* flex integer type definitions */ + +#ifndef FLEXINT_H +#define FLEXINT_H + +/* C99 systems have <inttypes.h>. Non-C99 systems may or may not. */ + +#if defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L +#include <inttypes.h> +typedef int8_t flex_int8_t; +typedef uint8_t flex_uint8_t; +typedef int16_t flex_int16_t; +typedef uint16_t flex_uint16_t; +typedef int32_t flex_int32_t; +typedef uint32_t flex_uint32_t; +#else +typedef signed char flex_int8_t; +typedef short int flex_int16_t; +typedef int flex_int32_t; +typedef unsigned char flex_uint8_t; +typedef unsigned short int flex_uint16_t; +typedef unsigned int flex_uint32_t; +#endif /* ! C99 */ + +/* Limits of integral types. */ +#ifndef INT8_MIN +#define INT8_MIN (-128) +#endif +#ifndef INT16_MIN +#define INT16_MIN (-32767-1) +#endif +#ifndef INT32_MIN +#define INT32_MIN (-2147483647-1) +#endif +#ifndef INT8_MAX +#define INT8_MAX (127) +#endif +#ifndef INT16_MAX +#define INT16_MAX (32767) +#endif +#ifndef INT32_MAX +#define INT32_MAX (2147483647) +#endif +#ifndef UINT8_MAX +#define UINT8_MAX (255U) +#endif +#ifndef UINT16_MAX +#define UINT16_MAX (65535U) +#endif +#ifndef UINT32_MAX +#define UINT32_MAX (4294967295U) +#endif + +#endif /* ! FLEXINT_H */ + +#ifdef __cplusplus + +/* The "const" storage-class-modifier is valid. */ +#define YY_USE_CONST + +#else /* ! __cplusplus */ + +#if __STDC__ + +#define YY_USE_CONST + +#endif /* __STDC__ */ +#endif /* ! __cplusplus */ + +#ifdef YY_USE_CONST +#define yyconst const +#else +#define yyconst +#endif + +/* Returned upon end-of-file. */ +#define YY_NULL 0 + +/* Promotes a possibly negative, possibly signed char to an unsigned + * integer for use as an array index. If the signed char is negative, + * we want to instead treat it as an 8-bit unsigned char, hence the + * double cast. + */ +#define YY_SC_TO_UI(c) ((unsigned int) (unsigned char) c) + +/* Enter a start condition. This macro really ought to take a parameter, + * but we do it the disgusting crufty way forced on us by the ()-less + * definition of BEGIN. + */ +#define BEGIN (yy_start) = 1 + 2 * + +/* Translate the current start state into a value that can be later handed + * to BEGIN to return to the state. The YYSTATE alias is for lex + * compatibility. + */ +#define YY_START (((yy_start) - 1) / 2) +#define YYSTATE YY_START + +/* Action number for EOF rule of a given start state. */ +#define YY_STATE_EOF(state) (YY_END_OF_BUFFER + state + 1) + +/* Special action meaning "start processing a new file". */ +#define YY_NEW_FILE yyrestart(yyin ) + +#define YY_END_OF_BUFFER_CHAR 0 + +/* Size of default input buffer. */ +#ifndef YY_BUF_SIZE +#define YY_BUF_SIZE 16384 +#endif + +#ifndef YY_TYPEDEF_YY_BUFFER_STATE +#define YY_TYPEDEF_YY_BUFFER_STATE +typedef struct yy_buffer_state *YY_BUFFER_STATE; +#endif + +static int yyleng; + +static FILE *yyin, *yyout; + +#define EOB_ACT_CONTINUE_SCAN 0 +#define EOB_ACT_END_OF_FILE 1 +#define EOB_ACT_LAST_MATCH 2 + + #define YY_LESS_LINENO(n) + +/* Return all but the first "n" matched characters back to the input stream. */ +#define yyless(n) \ + do \ + { \ + /* Undo effects of setting up yytext. */ \ + int yyless_macro_arg = (n); \ + YY_LESS_LINENO(yyless_macro_arg);\ + *yy_cp = (yy_hold_char); \ + YY_RESTORE_YY_MORE_OFFSET \ + (yy_c_buf_p) = yy_cp = yy_bp + yyless_macro_arg - YY_MORE_ADJ; \ + YY_DO_BEFORE_ACTION; /* set up yytext again */ \ + } \ + while ( 0 ) + +#define unput(c) yyunput( c, (yytext_ptr) ) + +/* The following is because we cannot portably get our hands on size_t + * (without autoconf's help, which isn't available because we want + * flex-generated scanners to compile on their own). + */ + +#ifndef YY_TYPEDEF_YY_SIZE_T +#define YY_TYPEDEF_YY_SIZE_T +typedef unsigned int yy_size_t; +#endif + +#ifndef YY_STRUCT_YY_BUFFER_STATE +#define YY_STRUCT_YY_BUFFER_STATE +struct yy_buffer_state + { + FILE *yy_input_file; + + char *yy_ch_buf; /* input buffer */ + char *yy_buf_pos; /* current position in input buffer */ + + /* Size of input buffer in bytes, not including room for EOB + * characters. + */ + yy_size_t yy_buf_size; + + /* Number of characters read into yy_ch_buf, not including EOB + * characters. + */ + int yy_n_chars; + + /* Whether we "own" the buffer - i.e., we know we created it, + * and can realloc() it to grow it, and should free() it to + * delete it. + */ + int yy_is_our_buffer; + + /* Whether this is an "interactive" input source; if so, and + * if we're using stdio for input, then we want to use getc() + * instead of fread(), to make sure we stop fetching input after + * each newline. + */ + int yy_is_interactive; + + /* Whether we're considered to be at the beginning of a line. + * If so, '^' rules will be active on the next match, otherwise + * not. + */ + int yy_at_bol; + + int yy_bs_lineno; /**< The line count. */ + int yy_bs_column; /**< The column count. */ + + /* Whether to try to fill the input buffer when we reach the + * end of it. + */ + int yy_fill_buffer; + + int yy_buffer_status; + +#define YY_BUFFER_NEW 0 +#define YY_BUFFER_NORMAL 1 + /* When an EOF's been seen but there's still some text to process + * then we mark the buffer as YY_EOF_PENDING, to indicate that we + * shouldn't try reading from the input source any more. We might + * still have a bunch of tokens to match, though, because of + * possible backing-up. + * + * When we actually see the EOF, we change the status to "new" + * (via yyrestart()), so that the user can continue scanning by + * just pointing yyin at a new input file. + */ +#define YY_BUFFER_EOF_PENDING 2 + + }; +#endif /* !YY_STRUCT_YY_BUFFER_STATE */ + +/* Stack of input buffers. */ +static size_t yy_buffer_stack_top = 0; /**< index of top of stack. */ +static size_t yy_buffer_stack_max = 0; /**< capacity of stack. */ +static YY_BUFFER_STATE * yy_buffer_stack = 0; /**< Stack as an array. */ + +/* We provide macros for accessing buffer states in case in the + * future we want to put the buffer states in a more general + * "scanner state". + * + * Returns the top of the stack, or NULL. + */ +#define YY_CURRENT_BUFFER ( (yy_buffer_stack) \ + ? (yy_buffer_stack)[(yy_buffer_stack_top)] \ + : NULL) + +/* Same as previous macro, but useful when we know that the buffer stack is not + * NULL or when we need an lvalue. For internal use only. + */ +#define YY_CURRENT_BUFFER_LVALUE (yy_buffer_stack)[(yy_buffer_stack_top)] + +/* yy_hold_char holds the character lost when yytext is formed. */ +static char yy_hold_char; +static int yy_n_chars; /* number of characters read into yy_ch_buf */ +static int yyleng; + +/* Points to current character in buffer. */ +static char *yy_c_buf_p = (char *) 0; +static int yy_init = 1; /* whether we need to initialize */ +static int yy_start = 0; /* start state number */ + +/* Flag which is used to allow yywrap()'s to do buffer switches + * instead of setting up a fresh yyin. A bit of a hack ... + */ +static int yy_did_buffer_switch_on_eof; + +static void yyrestart (FILE *input_file ); +__attribute__((unused)) static void yy_switch_to_buffer (YY_BUFFER_STATE new_buffer ); +static YY_BUFFER_STATE yy_create_buffer (FILE *file,int size ); +static void yy_delete_buffer (YY_BUFFER_STATE b ); +static void yy_flush_buffer (YY_BUFFER_STATE b ); +__attribute__((unused)) static void yypush_buffer_state (YY_BUFFER_STATE new_buffer ); +__attribute__((unused)) static void yypop_buffer_state (void ); + +static void yyensure_buffer_stack (void ); +static void yy_load_buffer_state (void ); +static void yy_init_buffer (YY_BUFFER_STATE b,FILE *file ); + +#define YY_FLUSH_BUFFER yy_flush_buffer(YY_CURRENT_BUFFER ) + +YY_BUFFER_STATE yy_scan_buffer (char *base,yy_size_t size ); +YY_BUFFER_STATE yy_scan_string (yyconst char *yy_str ); +YY_BUFFER_STATE yy_scan_bytes (yyconst char *bytes,int len ); + +static void *yyalloc (yy_size_t ); +static void *yyrealloc (void *,yy_size_t ); +static void yyfree (void * ); + +#define yy_new_buffer yy_create_buffer + +#define yy_set_interactive(is_interactive) \ + { \ + if ( ! YY_CURRENT_BUFFER ){ \ + yyensure_buffer_stack (); \ + YY_CURRENT_BUFFER_LVALUE = \ + yy_create_buffer(yyin,YY_BUF_SIZE ); \ + } \ + YY_CURRENT_BUFFER_LVALUE->yy_is_interactive = is_interactive; \ + } + +#define yy_set_bol(at_bol) \ + { \ + if ( ! YY_CURRENT_BUFFER ){\ + yyensure_buffer_stack (); \ + YY_CURRENT_BUFFER_LVALUE = \ + yy_create_buffer(yyin,YY_BUF_SIZE ); \ + } \ + YY_CURRENT_BUFFER_LVALUE->yy_at_bol = at_bol; \ + } + +#define YY_AT_BOL() (YY_CURRENT_BUFFER_LVALUE->yy_at_bol) + +/* Begin user sect3 */ + +#define yywrap(n) 1 +#define YY_SKIP_YYWRAP + +typedef unsigned char YY_CHAR; + +static FILE *yyin = (FILE *) 0, *yyout = (FILE *) 0; + +typedef int yy_state_type; + +static int yylineno; + +static int yylineno = 1; + +static char *yytext; +#define yytext_ptr yytext + +static yy_state_type yy_get_previous_state (void ); +static yy_state_type yy_try_NUL_trans (yy_state_type current_state ); +static int yy_get_next_buffer (void ); +static void yy_fatal_error (yyconst char msg[] ); + +/* Done after the current pattern has been matched and before the + * corresponding action - sets up yytext. + */ +#define YY_DO_BEFORE_ACTION \ + (yytext_ptr) = yy_bp; \ + yyleng = (size_t) (yy_cp - yy_bp); \ + (yy_hold_char) = *yy_cp; \ + *yy_cp = '\0'; \ + (yy_c_buf_p) = yy_cp; + +#define YY_NUM_RULES 119 +#define YY_END_OF_BUFFER 120 +/* This struct is not used in this scanner, + but its presence is necessary. */ +struct yy_trans_info + { + flex_int32_t yy_verify; + flex_int32_t yy_nxt; + }; +static yyconst flex_int16_t yy_accept[399] = + { 0, + 0, 0, 114, 114, 0, 0, 0, 0, 120, 118, + 117, 117, 8, 118, 109, 5, 98, 104, 107, 105, + 102, 106, 118, 108, 1, 118, 103, 101, 99, 100, + 112, 92, 92, 92, 92, 92, 92, 92, 92, 92, + 92, 92, 92, 92, 92, 92, 92, 92, 92, 92, + 110, 111, 114, 115, 6, 7, 9, 10, 117, 4, + 93, 113, 2, 1, 3, 94, 95, 97, 96, 92, + 92, 92, 92, 92, 92, 44, 92, 92, 92, 92, + 92, 92, 92, 92, 92, 92, 92, 92, 92, 92, + 92, 92, 28, 17, 25, 92, 92, 92, 92, 92, + + 54, 61, 92, 14, 92, 92, 92, 92, 92, 92, + 92, 92, 92, 92, 92, 92, 92, 92, 92, 92, + 92, 92, 114, 115, 115, 116, 6, 7, 9, 10, + 2, 13, 45, 92, 92, 92, 92, 92, 92, 92, + 92, 92, 92, 92, 92, 92, 92, 92, 92, 92, + 92, 27, 92, 92, 92, 41, 92, 92, 92, 92, + 21, 92, 92, 92, 92, 15, 92, 92, 92, 18, + 92, 92, 92, 92, 92, 80, 92, 92, 92, 51, + 92, 12, 92, 36, 92, 92, 92, 92, 92, 92, + 92, 92, 92, 92, 92, 92, 92, 92, 20, 24, + + 92, 92, 92, 92, 92, 92, 92, 92, 92, 92, + 46, 92, 92, 30, 92, 87, 92, 92, 39, 92, + 92, 92, 92, 92, 48, 92, 89, 32, 91, 92, + 11, 64, 92, 92, 92, 42, 92, 92, 92, 92, + 92, 92, 92, 92, 92, 92, 29, 92, 92, 92, + 92, 92, 92, 92, 92, 92, 85, 92, 26, 92, + 66, 92, 92, 92, 37, 92, 92, 92, 92, 92, + 92, 92, 31, 65, 23, 92, 57, 92, 75, 92, + 92, 92, 43, 92, 92, 92, 92, 92, 92, 92, + 92, 90, 92, 92, 56, 92, 92, 92, 92, 92, + + 92, 92, 40, 33, 79, 19, 92, 83, 74, 55, + 92, 63, 92, 52, 92, 92, 92, 47, 92, 76, + 92, 78, 92, 92, 34, 92, 92, 92, 35, 72, + 92, 92, 92, 92, 58, 92, 50, 49, 92, 92, + 53, 62, 92, 92, 92, 22, 92, 92, 73, 81, + 92, 92, 77, 92, 68, 92, 92, 92, 92, 38, + 92, 88, 67, 92, 84, 92, 92, 92, 86, 92, + 59, 92, 16, 92, 70, 69, 92, 92, 82, 92, + 92, 92, 92, 92, 92, 92, 92, 92, 92, 71, + 92, 92, 92, 92, 92, 92, 60, 0 + + } ; + +static yyconst flex_int32_t yy_ec[256] = + { 0, + 1, 1, 1, 1, 1, 1, 1, 1, 2, 3, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 2, 1, 4, 1, 5, 6, 1, 7, 8, + 9, 10, 11, 12, 13, 14, 15, 16, 16, 16, + 16, 16, 16, 16, 16, 16, 16, 17, 18, 19, + 20, 21, 22, 1, 23, 24, 25, 26, 27, 28, + 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, + 39, 40, 41, 42, 43, 44, 45, 46, 47, 32, + 1, 1, 1, 1, 48, 1, 32, 32, 32, 32, + + 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, + 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, + 32, 32, 49, 1, 50, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1 + } ; + +static yyconst flex_int32_t yy_meta[51] = + { 0, + 1, 1, 1, 2, 1, 1, 3, 1, 1, 4, + 1, 1, 1, 1, 1, 5, 1, 1, 1, 6, + 1, 1, 5, 5, 5, 5, 5, 5, 5, 5, + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, + 5, 5, 5, 5, 5, 5, 5, 5, 1, 1 + } ; + +static yyconst flex_int16_t yy_base[409] = + { 0, + 0, 0, 437, 436, 438, 437, 439, 438, 441, 448, + 49, 51, 448, 0, 448, 448, 448, 448, 448, 448, + 448, 448, 426, 429, 41, 418, 448, 38, 448, 417, + 448, 20, 33, 32, 46, 40, 44, 0, 54, 52, + 399, 48, 60, 395, 65, 67, 81, 27, 411, 75, + 448, 448, 0, 98, 0, 426, 0, 428, 113, 0, + 448, 448, 415, 54, 410, 448, 448, 448, 448, 0, + 403, 68, 399, 391, 389, 0, 402, 80, 84, 397, + 383, 96, 381, 394, 379, 393, 387, 375, 379, 375, + 377, 377, 0, 98, 0, 376, 97, 385, 368, 375, + + 0, 0, 381, 381, 364, 94, 103, 379, 98, 65, + 381, 369, 109, 361, 377, 373, 351, 97, 372, 363, + 115, 356, 0, 137, 138, 448, 0, 388, 0, 390, + 377, 0, 0, 365, 360, 367, 365, 348, 346, 345, + 350, 359, 347, 359, 95, 347, 353, 354, 336, 336, + 123, 0, 334, 350, 351, 0, 338, 347, 344, 122, + 124, 341, 336, 330, 340, 338, 331, 328, 336, 0, + 326, 336, 334, 325, 315, 309, 322, 307, 327, 0, + 313, 0, 311, 0, 325, 316, 313, 131, 309, 316, + 323, 302, 304, 309, 309, 301, 304, 299, 0, 0, + + 311, 295, 305, 312, 292, 291, 305, 294, 307, 287, + 0, 297, 279, 0, 298, 0, 295, 282, 0, 281, + 276, 281, 280, 290, 0, 276, 0, 0, 0, 280, + 0, 0, 276, 273, 287, 0, 272, 272, 270, 286, + 271, 283, 280, 264, 282, 277, 0, 272, 272, 258, + 257, 270, 256, 270, 269, 268, 0, 252, 0, 246, + 0, 265, 249, 248, 0, 262, 252, 247, 246, 258, + 248, 247, 0, 0, 0, 251, 0, 239, 0, 253, + 249, 235, 0, 249, 250, 233, 238, 231, 249, 231, + 228, 0, 229, 226, 0, 231, 243, 230, 237, 227, + + 235, 220, 0, 0, 0, 212, 219, 0, 0, 0, + 216, 0, 230, 0, 231, 218, 217, 0, 213, 0, + 216, 0, 208, 210, 0, 209, 223, 216, 0, 0, + 219, 222, 204, 219, 0, 215, 0, 0, 199, 213, + 0, 0, 197, 196, 201, 0, 210, 195, 0, 0, + 201, 197, 0, 192, 0, 204, 204, 192, 202, 0, + 179, 0, 0, 199, 0, 183, 177, 183, 0, 174, + 0, 193, 0, 192, 0, 0, 183, 187, 0, 174, + 174, 180, 166, 189, 181, 180, 166, 151, 118, 0, + 130, 136, 127, 123, 119, 111, 0, 448, 167, 173, + + 179, 152, 181, 124, 187, 193, 199, 205 + } ; + +static yyconst flex_int16_t yy_def[409] = + { 0, + 398, 1, 399, 399, 400, 400, 401, 401, 398, 398, + 398, 398, 398, 402, 398, 398, 398, 398, 398, 398, + 398, 398, 398, 398, 398, 403, 398, 398, 398, 398, + 398, 404, 404, 404, 404, 404, 404, 404, 404, 404, + 404, 404, 404, 404, 404, 404, 404, 404, 404, 404, + 398, 398, 405, 406, 407, 398, 408, 398, 398, 402, + 398, 398, 398, 398, 403, 398, 398, 398, 398, 404, + 404, 404, 404, 404, 404, 404, 404, 404, 404, 404, + 404, 404, 404, 404, 404, 404, 404, 404, 404, 404, + 404, 404, 404, 404, 404, 404, 404, 404, 404, 404, + + 404, 404, 404, 404, 404, 404, 404, 404, 404, 404, + 404, 404, 404, 404, 404, 404, 404, 404, 404, 404, + 404, 404, 405, 406, 406, 398, 407, 398, 408, 398, + 398, 404, 404, 404, 404, 404, 404, 404, 404, 404, + 404, 404, 404, 404, 404, 404, 404, 404, 404, 404, + 404, 404, 404, 404, 404, 404, 404, 404, 404, 404, + 404, 404, 404, 404, 404, 404, 404, 404, 404, 404, + 404, 404, 404, 404, 404, 404, 404, 404, 404, 404, + 404, 404, 404, 404, 404, 404, 404, 404, 404, 404, + 404, 404, 404, 404, 404, 404, 404, 404, 404, 404, + + 404, 404, 404, 404, 404, 404, 404, 404, 404, 404, + 404, 404, 404, 404, 404, 404, 404, 404, 404, 404, + 404, 404, 404, 404, 404, 404, 404, 404, 404, 404, + 404, 404, 404, 404, 404, 404, 404, 404, 404, 404, + 404, 404, 404, 404, 404, 404, 404, 404, 404, 404, + 404, 404, 404, 404, 404, 404, 404, 404, 404, 404, + 404, 404, 404, 404, 404, 404, 404, 404, 404, 404, + 404, 404, 404, 404, 404, 404, 404, 404, 404, 404, + 404, 404, 404, 404, 404, 404, 404, 404, 404, 404, + 404, 404, 404, 404, 404, 404, 404, 404, 404, 404, + + 404, 404, 404, 404, 404, 404, 404, 404, 404, 404, + 404, 404, 404, 404, 404, 404, 404, 404, 404, 404, + 404, 404, 404, 404, 404, 404, 404, 404, 404, 404, + 404, 404, 404, 404, 404, 404, 404, 404, 404, 404, + 404, 404, 404, 404, 404, 404, 404, 404, 404, 404, + 404, 404, 404, 404, 404, 404, 404, 404, 404, 404, + 404, 404, 404, 404, 404, 404, 404, 404, 404, 404, + 404, 404, 404, 404, 404, 404, 404, 404, 404, 404, + 404, 404, 404, 404, 404, 404, 404, 404, 404, 404, + 404, 404, 404, 404, 404, 404, 404, 0, 398, 398, + + 398, 398, 398, 398, 398, 398, 398, 398 + } ; + +static yyconst flex_int16_t yy_nxt[499] = + { 0, + 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, + 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, + 30, 31, 32, 33, 34, 35, 36, 37, 38, 38, + 39, 38, 38, 40, 41, 42, 43, 44, 38, 45, + 46, 47, 48, 49, 50, 38, 38, 38, 51, 52, + 59, 59, 59, 59, 63, 71, 64, 67, 68, 73, + 72, 77, 118, 74, 119, 78, 75, 63, 79, 64, + 88, 80, 82, 85, 81, 86, 83, 89, 96, 76, + 90, 93, 84, 91, 99, 87, 92, 101, 97, 94, + 100, 107, 133, 110, 95, 102, 111, 103, 179, 104, + + 108, 109, 105, 115, 121, 112, 180, 125, 134, 113, + 116, 122, 126, 114, 59, 59, 139, 117, 141, 142, + 146, 163, 140, 159, 171, 173, 143, 189, 70, 147, + 172, 177, 183, 164, 207, 208, 148, 190, 160, 161, + 174, 193, 178, 184, 175, 194, 398, 125, 222, 214, + 224, 398, 126, 215, 248, 249, 60, 397, 396, 395, + 225, 394, 393, 223, 392, 391, 250, 53, 53, 53, + 53, 53, 53, 55, 55, 55, 55, 55, 55, 57, + 57, 57, 57, 57, 57, 65, 65, 123, 123, 123, + 390, 123, 123, 124, 124, 124, 124, 124, 124, 127, + + 127, 389, 127, 127, 127, 129, 388, 129, 129, 129, + 129, 387, 386, 385, 384, 383, 382, 381, 380, 379, + 378, 377, 376, 375, 374, 373, 372, 371, 370, 369, + 368, 367, 366, 365, 364, 363, 362, 361, 360, 359, + 358, 357, 356, 355, 354, 353, 352, 351, 350, 349, + 348, 347, 346, 345, 344, 343, 342, 341, 340, 339, + 338, 337, 336, 335, 334, 333, 332, 331, 330, 329, + 328, 327, 326, 325, 324, 323, 322, 321, 320, 319, + 318, 317, 316, 315, 314, 313, 312, 311, 310, 309, + 308, 307, 306, 305, 304, 303, 302, 301, 300, 299, + + 298, 297, 296, 295, 294, 293, 292, 291, 290, 289, + 288, 287, 286, 285, 284, 283, 282, 281, 280, 279, + 278, 277, 276, 275, 274, 273, 272, 271, 270, 269, + 268, 267, 266, 265, 264, 263, 262, 261, 260, 259, + 258, 257, 256, 255, 254, 253, 252, 251, 247, 246, + 245, 244, 243, 242, 241, 240, 239, 238, 237, 236, + 235, 234, 233, 232, 231, 230, 229, 228, 227, 226, + 221, 220, 219, 218, 217, 216, 213, 212, 211, 210, + 209, 206, 205, 204, 203, 202, 201, 200, 199, 198, + 197, 196, 131, 130, 128, 195, 192, 191, 188, 187, + + 186, 185, 182, 181, 176, 170, 169, 168, 167, 166, + 165, 162, 158, 157, 156, 155, 154, 153, 152, 151, + 150, 149, 145, 144, 138, 137, 136, 135, 132, 398, + 131, 130, 128, 120, 106, 98, 69, 66, 62, 61, + 398, 58, 58, 56, 56, 54, 54, 9, 398, 398, + 398, 398, 398, 398, 398, 398, 398, 398, 398, 398, + 398, 398, 398, 398, 398, 398, 398, 398, 398, 398, + 398, 398, 398, 398, 398, 398, 398, 398, 398, 398, + 398, 398, 398, 398, 398, 398, 398, 398, 398, 398, + 398, 398, 398, 398, 398, 398, 398, 398 + + } ; + +static yyconst flex_int16_t yy_chk[499] = + { 0, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 11, 11, 12, 12, 25, 32, 25, 28, 28, 33, + 32, 34, 48, 33, 48, 34, 33, 64, 34, 64, + 37, 34, 35, 36, 34, 36, 35, 37, 40, 33, + 37, 39, 35, 37, 42, 36, 37, 43, 40, 39, + 42, 45, 72, 46, 39, 43, 46, 43, 110, 43, + + 45, 45, 43, 47, 50, 46, 110, 54, 72, 46, + 47, 50, 54, 46, 59, 59, 78, 47, 79, 79, + 82, 97, 78, 94, 106, 107, 79, 118, 404, 82, + 106, 109, 113, 97, 145, 145, 82, 118, 94, 94, + 107, 121, 109, 113, 107, 121, 124, 125, 160, 151, + 161, 124, 125, 151, 188, 188, 402, 396, 395, 394, + 161, 393, 392, 160, 391, 389, 188, 399, 399, 399, + 399, 399, 399, 400, 400, 400, 400, 400, 400, 401, + 401, 401, 401, 401, 401, 403, 403, 405, 405, 405, + 388, 405, 405, 406, 406, 406, 406, 406, 406, 407, + + 407, 387, 407, 407, 407, 408, 386, 408, 408, 408, + 408, 385, 384, 383, 382, 381, 380, 378, 377, 374, + 372, 370, 368, 367, 366, 364, 361, 359, 358, 357, + 356, 354, 352, 351, 348, 347, 345, 344, 343, 340, + 339, 336, 334, 333, 332, 331, 328, 327, 326, 324, + 323, 321, 319, 317, 316, 315, 313, 311, 307, 306, + 302, 301, 300, 299, 298, 297, 296, 294, 293, 291, + 290, 289, 288, 287, 286, 285, 284, 282, 281, 280, + 278, 276, 272, 271, 270, 269, 268, 267, 266, 264, + 263, 262, 260, 258, 256, 255, 254, 253, 252, 251, + + 250, 249, 248, 246, 245, 244, 243, 242, 241, 240, + 239, 238, 237, 235, 234, 233, 230, 226, 224, 223, + 222, 221, 220, 218, 217, 215, 213, 212, 210, 209, + 208, 207, 206, 205, 204, 203, 202, 201, 198, 197, + 196, 195, 194, 193, 192, 191, 190, 189, 187, 186, + 185, 183, 181, 179, 178, 177, 176, 175, 174, 173, + 172, 171, 169, 168, 167, 166, 165, 164, 163, 162, + 159, 158, 157, 155, 154, 153, 150, 149, 148, 147, + 146, 144, 143, 142, 141, 140, 139, 138, 137, 136, + 135, 134, 131, 130, 128, 122, 120, 119, 117, 116, + + 115, 114, 112, 111, 108, 105, 104, 103, 100, 99, + 98, 96, 92, 91, 90, 89, 88, 87, 86, 85, + 84, 83, 81, 80, 77, 75, 74, 73, 71, 65, + 63, 58, 56, 49, 44, 41, 30, 26, 24, 23, + 9, 8, 7, 6, 5, 4, 3, 398, 398, 398, + 398, 398, 398, 398, 398, 398, 398, 398, 398, 398, + 398, 398, 398, 398, 398, 398, 398, 398, 398, 398, + 398, 398, 398, 398, 398, 398, 398, 398, 398, 398, + 398, 398, 398, 398, 398, 398, 398, 398, 398, 398, + 398, 398, 398, 398, 398, 398, 398, 398 + + } ; + +static yy_state_type yy_last_accepting_state; +static char *yy_last_accepting_cpos; + +static int yy_flex_debug; +static int yy_flex_debug = 0; + +/* The intent behind this definition is that it'll catch + * any uses of REJECT which flex missed. + */ +#define REJECT reject_used_but_not_detected +#define yymore() yymore_used_but_not_detected +#define YY_MORE_ADJ 0 +#define YY_RESTORE_YY_MORE_OFFSET +static char *yytext; +#line 1 "pars0lex.l" +/****************************************************** +SQL parser lexical analyzer: input file for the GNU Flex lexer generator + +(c) 1997 Innobase Oy + +Created 12/14/1997 Heikki Tuuri +Published under the GPL version 2 + +The InnoDB parser is frozen because MySQL takes care of SQL parsing. +Therefore we normally keep the InnoDB parser C files as they are, and do +not automatically generate them from pars0grm.y and pars0lex.l. + +How to make the InnoDB parser and lexer C files: + +1. Run ./make_flex.sh to generate lexer files. + +2. Run ./make_bison.sh to generate parser files. + +These instructions seem to work at least with bison-1.875d and flex-2.5.31 on +Linux. +*******************************************************/ +#define YY_NO_INPUT 1 +#define YY_NO_UNISTD_H 1 +#line 38 "pars0lex.l" +#define YYSTYPE que_node_t* + +#include "univ.i" +#include "pars0pars.h" +#include "pars0grm.h" +#include "pars0sym.h" +#include "mem0mem.h" +#include "os0proc.h" + +#define malloc(A) ut_malloc(A) +#define free(A) ut_free(A) +#define realloc(P, A) ut_realloc(P, A) +#define exit(A) ut_error + +#define YY_INPUT(buf, result, max_size) pars_get_lex_chars(buf, &result, max_size) + +/* String buffer for removing quotes */ +static ulint stringbuf_len_alloc = 0; /* Allocated length */ +static ulint stringbuf_len = 0; /* Current length */ +static char* stringbuf; /* Start of buffer */ +/* Appends a string to the buffer. */ +static +void +string_append( +/*==========*/ + const char* str, /* in: string to be appended */ + ulint len) /* in: length of the string */ +{ + if (stringbuf == NULL) { + stringbuf = malloc(1); + stringbuf_len_alloc = 1; + } + + if (stringbuf_len + len > stringbuf_len_alloc) { + while (stringbuf_len + len > stringbuf_len_alloc) { + stringbuf_len_alloc <<= 1; + } + stringbuf = realloc(stringbuf, stringbuf_len_alloc); + } + + memcpy(stringbuf + stringbuf_len, str, len); + stringbuf_len += len; +} + + + + +#line 759 "lexyy.c" + +#define INITIAL 0 +#define comment 1 +#define quoted 2 +#define id 3 + +#ifndef YY_NO_UNISTD_H +/* Special case for "unistd.h", since it is non-ANSI. We include it way + * down here because we want the user's section 1 to have been scanned first. + * The user has a chance to override it with an option. + */ +#include <unistd.h> +#endif + +#ifndef YY_EXTRA_TYPE +#define YY_EXTRA_TYPE void * +#endif + +/* Macros after this point can all be overridden by user definitions in + * section 1. + */ + +#ifndef YY_SKIP_YYWRAP +#ifdef __cplusplus +extern "C" int yywrap (void ); +#else +extern int yywrap (void ); +#endif +#endif + +#ifndef yytext_ptr +static void yy_flex_strncpy (char *,yyconst char *,int ); +#endif + +#ifdef YY_NEED_STRLEN +static int yy_flex_strlen (yyconst char * ); +#endif + +#ifndef YY_NO_INPUT + +#ifdef __cplusplus +static int yyinput (void ); +#else +static int input (void ); +#endif + +#endif + +/* Amount of stuff to slurp up with each read. */ +#ifndef YY_READ_BUF_SIZE +#define YY_READ_BUF_SIZE 8192 +#endif + +/* Copy whatever the last rule matched to the standard output. */ +#ifndef ECHO +/* This used to be an fputs(), but since the string might contain NUL's, + * we now use fwrite(). + */ +#define ECHO (void) fwrite( yytext, yyleng, 1, yyout ) +#endif + +/* Gets input and stuffs it into "buf". number of characters read, or YY_NULL, + * is returned in "result". + */ +#ifndef YY_INPUT +#define YY_INPUT(buf,result,max_size) \ + if ( YY_CURRENT_BUFFER_LVALUE->yy_is_interactive ) \ + { \ + int c = '*'; \ + size_t n; \ + for ( n = 0; n < max_size && \ + (c = getc( yyin )) != EOF && c != '\n'; ++n ) \ + buf[n] = (char) c; \ + if ( c == '\n' ) \ + buf[n++] = (char) c; \ + if ( c == EOF && ferror( yyin ) ) \ + YY_FATAL_ERROR( "input in flex scanner failed" ); \ + result = n; \ + } \ + else \ + { \ + errno=0; \ + while ( (result = fread(buf, 1, max_size, yyin))==0 && ferror(yyin)) \ + { \ + if( errno != EINTR) \ + { \ + YY_FATAL_ERROR( "input in flex scanner failed" ); \ + break; \ + } \ + errno=0; \ + clearerr(yyin); \ + } \ + }\ +\ + +#endif + +/* No semi-colon after return; correct usage is to write "yyterminate();" - + * we don't want an extra ';' after the "return" because that will cause + * some compilers to complain about unreachable statements. + */ +#ifndef yyterminate +#define yyterminate() return YY_NULL +#endif + +/* Number of entries by which start-condition stack grows. */ +#ifndef YY_START_STACK_INCR +#define YY_START_STACK_INCR 25 +#endif + +/* Report a fatal error. */ +#ifndef YY_FATAL_ERROR +#define YY_FATAL_ERROR(msg) yy_fatal_error( msg ) +#endif + +/* end tables serialization structures and prototypes */ + +/* Default declaration of generated scanner - a define so the user can + * easily add parameters. + */ +#ifndef YY_DECL +#define YY_DECL_IS_OURS 1 + +UNIV_INTERN int yylex (void); + +#define YY_DECL UNIV_INTERN int yylex (void) +#endif /* !YY_DECL */ + +/* Code executed at the beginning of each rule, after yytext and yyleng + * have been set up. + */ +#ifndef YY_USER_ACTION +#define YY_USER_ACTION +#endif + +/* Code executed at the end of each rule. */ +#ifndef YY_BREAK +#define YY_BREAK break; +#endif + +#define YY_RULE_SETUP \ + YY_USER_ACTION + +/** The main scanner function which does all the work. + */ +YY_DECL +{ + register yy_state_type yy_current_state; + register char *yy_cp, *yy_bp; + register int yy_act; + +#line 92 "pars0lex.l" + + +#line 914 "lexyy.c" + + if ( (yy_init) ) + { + (yy_init) = 0; + +#ifdef YY_USER_INIT + YY_USER_INIT; +#endif + + if ( ! (yy_start) ) + (yy_start) = 1; /* first start state */ + + if ( ! yyin ) + yyin = stdin; + + if ( ! yyout ) + yyout = stdout; + + if ( ! YY_CURRENT_BUFFER ) { + yyensure_buffer_stack (); + YY_CURRENT_BUFFER_LVALUE = + yy_create_buffer(yyin,YY_BUF_SIZE ); + } + + yy_load_buffer_state( ); + } + + while ( 1 ) /* loops until end-of-file is reached */ + { + yy_cp = (yy_c_buf_p); + + /* Support of yytext. */ + *yy_cp = (yy_hold_char); + + /* yy_bp points to the position in yy_ch_buf of the start of + * the current run. + */ + yy_bp = yy_cp; + + yy_current_state = (yy_start); +yy_match: + do + { + register YY_CHAR yy_c = yy_ec[YY_SC_TO_UI(*yy_cp)]; + if ( yy_accept[yy_current_state] ) + { + (yy_last_accepting_state) = yy_current_state; + (yy_last_accepting_cpos) = yy_cp; + } + while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state ) + { + yy_current_state = (int) yy_def[yy_current_state]; + if ( yy_current_state >= 399 ) + yy_c = yy_meta[(unsigned int) yy_c]; + } + yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c]; + ++yy_cp; + } + while ( yy_current_state != 398 ); + yy_cp = (yy_last_accepting_cpos); + yy_current_state = (yy_last_accepting_state); + +yy_find_action: + yy_act = yy_accept[yy_current_state]; + + YY_DO_BEFORE_ACTION; + +do_action: /* This label is used only to access EOF actions. */ + + switch ( yy_act ) + { /* beginning of action switch */ + case 0: /* must back up */ + /* undo the effects of YY_DO_BEFORE_ACTION */ + *yy_cp = (yy_hold_char); + yy_cp = (yy_last_accepting_cpos); + yy_current_state = (yy_last_accepting_state); + goto yy_find_action; + +case 1: +YY_RULE_SETUP +#line 94 "pars0lex.l" +{ + yylval = sym_tab_add_int_lit(pars_sym_tab_global, + atoi(yytext)); + return(PARS_INT_LIT); +} + YY_BREAK +case 2: +YY_RULE_SETUP +#line 100 "pars0lex.l" +{ + ut_error; /* not implemented */ + + return(PARS_FLOAT_LIT); +} + YY_BREAK +case 3: +YY_RULE_SETUP +#line 106 "pars0lex.l" +{ + ulint type; + + yylval = sym_tab_add_bound_lit(pars_sym_tab_global, + yytext + 1, &type); + + return((int) type); +} + YY_BREAK +case 4: +YY_RULE_SETUP +#line 115 "pars0lex.l" +{ + yylval = sym_tab_add_bound_id(pars_sym_tab_global, + yytext + 1); + + return(PARS_ID_TOKEN); +} + YY_BREAK +case 5: +YY_RULE_SETUP +#line 122 "pars0lex.l" +{ +/* Quoted character string literals are handled in an explicit +start state 'quoted'. This state is entered and the buffer for +the scanned string is emptied upon encountering a starting quote. + +In the state 'quoted', only two actions are possible (defined below). */ + BEGIN(quoted); + stringbuf_len = 0; +} + YY_BREAK +case 6: +/* rule 6 can match eol */ +YY_RULE_SETUP +#line 131 "pars0lex.l" +{ + /* Got a sequence of characters other than "'": + append to string buffer */ + string_append(yytext, yyleng); +} + YY_BREAK +case 7: +YY_RULE_SETUP +#line 136 "pars0lex.l" +{ + /* Got a sequence of "'" characters: + append half of them to string buffer, + as "''" represents a single "'". + We apply truncating division, + so that "'''" will result in "'". */ + + string_append(yytext, yyleng / 2); + + /* If we got an odd number of quotes, then the + last quote we got is the terminating quote. + At the end of the string, we return to the + initial start state and report the scanned + string literal. */ + + if (yyleng % 2) { + BEGIN(INITIAL); + yylval = sym_tab_add_str_lit( + pars_sym_tab_global, + (byte*) stringbuf, stringbuf_len); + return(PARS_STR_LIT); + } +} + YY_BREAK +case 8: +YY_RULE_SETUP +#line 160 "pars0lex.l" +{ +/* Quoted identifiers are handled in an explicit start state 'id'. +This state is entered and the buffer for the scanned string is emptied +upon encountering a starting quote. + +In the state 'id', only two actions are possible (defined below). */ + BEGIN(id); + stringbuf_len = 0; +} + YY_BREAK +case 9: +/* rule 9 can match eol */ +YY_RULE_SETUP +#line 169 "pars0lex.l" +{ + /* Got a sequence of characters other than '"': + append to string buffer */ + string_append(yytext, yyleng); +} + YY_BREAK +case 10: +YY_RULE_SETUP +#line 174 "pars0lex.l" +{ + /* Got a sequence of '"' characters: + append half of them to string buffer, + as '""' represents a single '"'. + We apply truncating division, + so that '"""' will result in '"'. */ + + string_append(yytext, yyleng / 2); + + /* If we got an odd number of quotes, then the + last quote we got is the terminating quote. + At the end of the string, we return to the + initial start state and report the scanned + identifier. */ + + if (yyleng % 2) { + BEGIN(INITIAL); + yylval = sym_tab_add_id( + pars_sym_tab_global, + (byte*) stringbuf, stringbuf_len); + + return(PARS_ID_TOKEN); + } +} + YY_BREAK +case 11: +YY_RULE_SETUP +#line 199 "pars0lex.l" +{ + yylval = sym_tab_add_null_lit(pars_sym_tab_global); + + return(PARS_NULL_LIT); +} + YY_BREAK +case 12: +YY_RULE_SETUP +#line 205 "pars0lex.l" +{ + /* Implicit cursor name */ + yylval = sym_tab_add_str_lit(pars_sym_tab_global, + (byte*) yytext, yyleng); + return(PARS_SQL_TOKEN); +} + YY_BREAK +case 13: +YY_RULE_SETUP +#line 212 "pars0lex.l" +{ + return(PARS_AND_TOKEN); +} + YY_BREAK +case 14: +YY_RULE_SETUP +#line 216 "pars0lex.l" +{ + return(PARS_OR_TOKEN); +} + YY_BREAK +case 15: +YY_RULE_SETUP +#line 220 "pars0lex.l" +{ + return(PARS_NOT_TOKEN); +} + YY_BREAK +case 16: +YY_RULE_SETUP +#line 224 "pars0lex.l" +{ + return(PARS_PROCEDURE_TOKEN); +} + YY_BREAK +case 17: +YY_RULE_SETUP +#line 228 "pars0lex.l" +{ + return(PARS_IN_TOKEN); +} + YY_BREAK +case 18: +YY_RULE_SETUP +#line 232 "pars0lex.l" +{ + return(PARS_OUT_TOKEN); +} + YY_BREAK +case 19: +YY_RULE_SETUP +#line 236 "pars0lex.l" +{ + return(PARS_BINARY_TOKEN); +} + YY_BREAK +case 20: +YY_RULE_SETUP +#line 240 "pars0lex.l" +{ + return(PARS_BLOB_TOKEN); +} + YY_BREAK +case 21: +YY_RULE_SETUP +#line 244 "pars0lex.l" +{ + return(PARS_INT_TOKEN); +} + YY_BREAK +case 22: +YY_RULE_SETUP +#line 248 "pars0lex.l" +{ + return(PARS_INT_TOKEN); +} + YY_BREAK +case 23: +YY_RULE_SETUP +#line 252 "pars0lex.l" +{ + return(PARS_FLOAT_TOKEN); +} + YY_BREAK +case 24: +YY_RULE_SETUP +#line 256 "pars0lex.l" +{ + return(PARS_CHAR_TOKEN); +} + YY_BREAK +case 25: +YY_RULE_SETUP +#line 260 "pars0lex.l" +{ + return(PARS_IS_TOKEN); +} + YY_BREAK +case 26: +YY_RULE_SETUP +#line 264 "pars0lex.l" +{ + return(PARS_BEGIN_TOKEN); +} + YY_BREAK +case 27: +YY_RULE_SETUP +#line 268 "pars0lex.l" +{ + return(PARS_END_TOKEN); +} + YY_BREAK +case 28: +YY_RULE_SETUP +#line 272 "pars0lex.l" +{ + return(PARS_IF_TOKEN); +} + YY_BREAK +case 29: +YY_RULE_SETUP +#line 276 "pars0lex.l" +{ + return(PARS_THEN_TOKEN); +} + YY_BREAK +case 30: +YY_RULE_SETUP +#line 280 "pars0lex.l" +{ + return(PARS_ELSE_TOKEN); +} + YY_BREAK +case 31: +YY_RULE_SETUP +#line 284 "pars0lex.l" +{ + return(PARS_ELSIF_TOKEN); +} + YY_BREAK +case 32: +YY_RULE_SETUP +#line 288 "pars0lex.l" +{ + return(PARS_LOOP_TOKEN); +} + YY_BREAK +case 33: +YY_RULE_SETUP +#line 292 "pars0lex.l" +{ + return(PARS_WHILE_TOKEN); +} + YY_BREAK +case 34: +YY_RULE_SETUP +#line 296 "pars0lex.l" +{ + return(PARS_RETURN_TOKEN); +} + YY_BREAK +case 35: +YY_RULE_SETUP +#line 300 "pars0lex.l" +{ + return(PARS_SELECT_TOKEN); +} + YY_BREAK +case 36: +YY_RULE_SETUP +#line 304 "pars0lex.l" +{ + return(PARS_SUM_TOKEN); +} + YY_BREAK +case 37: +YY_RULE_SETUP +#line 308 "pars0lex.l" +{ + return(PARS_COUNT_TOKEN); +} + YY_BREAK +case 38: +YY_RULE_SETUP +#line 312 "pars0lex.l" +{ + return(PARS_DISTINCT_TOKEN); +} + YY_BREAK +case 39: +YY_RULE_SETUP +#line 316 "pars0lex.l" +{ + return(PARS_FROM_TOKEN); +} + YY_BREAK +case 40: +YY_RULE_SETUP +#line 320 "pars0lex.l" +{ + return(PARS_WHERE_TOKEN); +} + YY_BREAK +case 41: +YY_RULE_SETUP +#line 324 "pars0lex.l" +{ + return(PARS_FOR_TOKEN); +} + YY_BREAK +case 42: +YY_RULE_SETUP +#line 328 "pars0lex.l" +{ + return(PARS_READ_TOKEN); +} + YY_BREAK +case 43: +YY_RULE_SETUP +#line 332 "pars0lex.l" +{ + return(PARS_ORDER_TOKEN); +} + YY_BREAK +case 44: +YY_RULE_SETUP +#line 336 "pars0lex.l" +{ + return(PARS_BY_TOKEN); +} + YY_BREAK +case 45: +YY_RULE_SETUP +#line 340 "pars0lex.l" +{ + return(PARS_ASC_TOKEN); +} + YY_BREAK +case 46: +YY_RULE_SETUP +#line 344 "pars0lex.l" +{ + return(PARS_DESC_TOKEN); +} + YY_BREAK +case 47: +YY_RULE_SETUP +#line 348 "pars0lex.l" +{ + return(PARS_INSERT_TOKEN); +} + YY_BREAK +case 48: +YY_RULE_SETUP +#line 352 "pars0lex.l" +{ + return(PARS_INTO_TOKEN); +} + YY_BREAK +case 49: +YY_RULE_SETUP +#line 356 "pars0lex.l" +{ + return(PARS_VALUES_TOKEN); +} + YY_BREAK +case 50: +YY_RULE_SETUP +#line 360 "pars0lex.l" +{ + return(PARS_UPDATE_TOKEN); +} + YY_BREAK +case 51: +YY_RULE_SETUP +#line 364 "pars0lex.l" +{ + return(PARS_SET_TOKEN); +} + YY_BREAK +case 52: +YY_RULE_SETUP +#line 368 "pars0lex.l" +{ + return(PARS_DELETE_TOKEN); +} + YY_BREAK +case 53: +YY_RULE_SETUP +#line 372 "pars0lex.l" +{ + return(PARS_CURRENT_TOKEN); +} + YY_BREAK +case 54: +YY_RULE_SETUP +#line 376 "pars0lex.l" +{ + return(PARS_OF_TOKEN); +} + YY_BREAK +case 55: +YY_RULE_SETUP +#line 380 "pars0lex.l" +{ + return(PARS_CREATE_TOKEN); +} + YY_BREAK +case 56: +YY_RULE_SETUP +#line 384 "pars0lex.l" +{ + return(PARS_TABLE_TOKEN); +} + YY_BREAK +case 57: +YY_RULE_SETUP +#line 388 "pars0lex.l" +{ + return(PARS_INDEX_TOKEN); +} + YY_BREAK +case 58: +YY_RULE_SETUP +#line 392 "pars0lex.l" +{ + return(PARS_UNIQUE_TOKEN); +} + YY_BREAK +case 59: +YY_RULE_SETUP +#line 396 "pars0lex.l" +{ + return(PARS_CLUSTERED_TOKEN); +} + YY_BREAK +case 60: +YY_RULE_SETUP +#line 400 "pars0lex.l" +{ + return(PARS_DOES_NOT_FIT_IN_MEM_TOKEN); +} + YY_BREAK +case 61: +YY_RULE_SETUP +#line 404 "pars0lex.l" +{ + return(PARS_ON_TOKEN); +} + YY_BREAK +case 62: +YY_RULE_SETUP +#line 408 "pars0lex.l" +{ + return(PARS_DECLARE_TOKEN); +} + YY_BREAK +case 63: +YY_RULE_SETUP +#line 412 "pars0lex.l" +{ + return(PARS_CURSOR_TOKEN); +} + YY_BREAK +case 64: +YY_RULE_SETUP +#line 416 "pars0lex.l" +{ + return(PARS_OPEN_TOKEN); +} + YY_BREAK +case 65: +YY_RULE_SETUP +#line 420 "pars0lex.l" +{ + return(PARS_FETCH_TOKEN); +} + YY_BREAK +case 66: +YY_RULE_SETUP +#line 424 "pars0lex.l" +{ + return(PARS_CLOSE_TOKEN); +} + YY_BREAK +case 67: +YY_RULE_SETUP +#line 428 "pars0lex.l" +{ + return(PARS_NOTFOUND_TOKEN); +} + YY_BREAK +case 68: +YY_RULE_SETUP +#line 432 "pars0lex.l" +{ + return(PARS_TO_CHAR_TOKEN); +} + YY_BREAK +case 69: +YY_RULE_SETUP +#line 436 "pars0lex.l" +{ + return(PARS_TO_NUMBER_TOKEN); +} + YY_BREAK +case 70: +YY_RULE_SETUP +#line 440 "pars0lex.l" +{ + return(PARS_TO_BINARY_TOKEN); +} + YY_BREAK +case 71: +YY_RULE_SETUP +#line 444 "pars0lex.l" +{ + return(PARS_BINARY_TO_NUMBER_TOKEN); +} + YY_BREAK +case 72: +YY_RULE_SETUP +#line 448 "pars0lex.l" +{ + return(PARS_SUBSTR_TOKEN); +} + YY_BREAK +case 73: +YY_RULE_SETUP +#line 452 "pars0lex.l" +{ + return(PARS_REPLSTR_TOKEN); +} + YY_BREAK +case 74: +YY_RULE_SETUP +#line 456 "pars0lex.l" +{ + return(PARS_CONCAT_TOKEN); +} + YY_BREAK +case 75: +YY_RULE_SETUP +#line 460 "pars0lex.l" +{ + return(PARS_INSTR_TOKEN); +} + YY_BREAK +case 76: +YY_RULE_SETUP +#line 464 "pars0lex.l" +{ + return(PARS_LENGTH_TOKEN); +} + YY_BREAK +case 77: +YY_RULE_SETUP +#line 468 "pars0lex.l" +{ + return(PARS_SYSDATE_TOKEN); +} + YY_BREAK +case 78: +YY_RULE_SETUP +#line 472 "pars0lex.l" +{ + return(PARS_PRINTF_TOKEN); +} + YY_BREAK +case 79: +YY_RULE_SETUP +#line 476 "pars0lex.l" +{ + return(PARS_ASSERT_TOKEN); +} + YY_BREAK +case 80: +YY_RULE_SETUP +#line 480 "pars0lex.l" +{ + return(PARS_RND_TOKEN); +} + YY_BREAK +case 81: +YY_RULE_SETUP +#line 484 "pars0lex.l" +{ + return(PARS_RND_STR_TOKEN); +} + YY_BREAK +case 82: +YY_RULE_SETUP +#line 488 "pars0lex.l" +{ + return(PARS_ROW_PRINTF_TOKEN); +} + YY_BREAK +case 83: +YY_RULE_SETUP +#line 492 "pars0lex.l" +{ + return(PARS_COMMIT_TOKEN); +} + YY_BREAK +case 84: +YY_RULE_SETUP +#line 496 "pars0lex.l" +{ + return(PARS_ROLLBACK_TOKEN); +} + YY_BREAK +case 85: +YY_RULE_SETUP +#line 500 "pars0lex.l" +{ + return(PARS_WORK_TOKEN); +} + YY_BREAK +case 86: +YY_RULE_SETUP +#line 504 "pars0lex.l" +{ + return(PARS_UNSIGNED_TOKEN); +} + YY_BREAK +case 87: +YY_RULE_SETUP +#line 508 "pars0lex.l" +{ + return(PARS_EXIT_TOKEN); +} + YY_BREAK +case 88: +YY_RULE_SETUP +#line 512 "pars0lex.l" +{ + return(PARS_FUNCTION_TOKEN); +} + YY_BREAK +case 89: +YY_RULE_SETUP +#line 516 "pars0lex.l" +{ + return(PARS_LOCK_TOKEN); +} + YY_BREAK +case 90: +YY_RULE_SETUP +#line 520 "pars0lex.l" +{ + return(PARS_SHARE_TOKEN); +} + YY_BREAK +case 91: +YY_RULE_SETUP +#line 524 "pars0lex.l" +{ + return(PARS_MODE_TOKEN); +} + YY_BREAK +case 92: +YY_RULE_SETUP +#line 528 "pars0lex.l" +{ + yylval = sym_tab_add_id(pars_sym_tab_global, + (byte*)yytext, + ut_strlen(yytext)); + return(PARS_ID_TOKEN); +} + YY_BREAK +case 93: +YY_RULE_SETUP +#line 535 "pars0lex.l" +{ + return(PARS_DDOT_TOKEN); +} + YY_BREAK +case 94: +YY_RULE_SETUP +#line 539 "pars0lex.l" +{ + return(PARS_ASSIGN_TOKEN); +} + YY_BREAK +case 95: +YY_RULE_SETUP +#line 543 "pars0lex.l" +{ + return(PARS_LE_TOKEN); +} + YY_BREAK +case 96: +YY_RULE_SETUP +#line 547 "pars0lex.l" +{ + return(PARS_GE_TOKEN); +} + YY_BREAK +case 97: +YY_RULE_SETUP +#line 551 "pars0lex.l" +{ + return(PARS_NE_TOKEN); +} + YY_BREAK +case 98: +YY_RULE_SETUP +#line 555 "pars0lex.l" +{ + + return((int)(*yytext)); +} + YY_BREAK +case 99: +YY_RULE_SETUP +#line 560 "pars0lex.l" +{ + + return((int)(*yytext)); +} + YY_BREAK +case 100: +YY_RULE_SETUP +#line 565 "pars0lex.l" +{ + + return((int)(*yytext)); +} + YY_BREAK +case 101: +YY_RULE_SETUP +#line 570 "pars0lex.l" +{ + + return((int)(*yytext)); +} + YY_BREAK +case 102: +YY_RULE_SETUP +#line 575 "pars0lex.l" +{ + + return((int)(*yytext)); +} + YY_BREAK +case 103: +YY_RULE_SETUP +#line 580 "pars0lex.l" +{ + + return((int)(*yytext)); +} + YY_BREAK +case 104: +YY_RULE_SETUP +#line 585 "pars0lex.l" +{ + + return((int)(*yytext)); +} + YY_BREAK +case 105: +YY_RULE_SETUP +#line 590 "pars0lex.l" +{ + + return((int)(*yytext)); +} + YY_BREAK +case 106: +YY_RULE_SETUP +#line 595 "pars0lex.l" +{ + + return((int)(*yytext)); +} + YY_BREAK +case 107: +YY_RULE_SETUP +#line 600 "pars0lex.l" +{ + + return((int)(*yytext)); +} + YY_BREAK +case 108: +YY_RULE_SETUP +#line 605 "pars0lex.l" +{ + + return((int)(*yytext)); +} + YY_BREAK +case 109: +YY_RULE_SETUP +#line 610 "pars0lex.l" +{ + + return((int)(*yytext)); +} + YY_BREAK +case 110: +YY_RULE_SETUP +#line 615 "pars0lex.l" +{ + + return((int)(*yytext)); +} + YY_BREAK +case 111: +YY_RULE_SETUP +#line 620 "pars0lex.l" +{ + + return((int)(*yytext)); +} + YY_BREAK +case 112: +YY_RULE_SETUP +#line 625 "pars0lex.l" +{ + + return((int)(*yytext)); +} + YY_BREAK +case 113: +YY_RULE_SETUP +#line 630 "pars0lex.l" +BEGIN(comment); /* eat up comment */ + YY_BREAK +case 114: +/* rule 114 can match eol */ +YY_RULE_SETUP +#line 632 "pars0lex.l" + + YY_BREAK +case 115: +/* rule 115 can match eol */ +YY_RULE_SETUP +#line 633 "pars0lex.l" + + YY_BREAK +case 116: +YY_RULE_SETUP +#line 634 "pars0lex.l" +BEGIN(INITIAL); + YY_BREAK +case 117: +/* rule 117 can match eol */ +YY_RULE_SETUP +#line 636 "pars0lex.l" +/* eat up whitespace */ + YY_BREAK +case 118: +YY_RULE_SETUP +#line 639 "pars0lex.l" +{ + fprintf(stderr,"Unrecognized character: %02x\n", + *yytext); + + ut_error; + + return(0); +} + YY_BREAK +case 119: +YY_RULE_SETUP +#line 648 "pars0lex.l" +YY_FATAL_ERROR( "flex scanner jammed" ); + YY_BREAK +#line 1916 "lexyy.c" +case YY_STATE_EOF(INITIAL): +case YY_STATE_EOF(comment): +case YY_STATE_EOF(quoted): +case YY_STATE_EOF(id): + yyterminate(); + + case YY_END_OF_BUFFER: + { + /* Amount of text matched not including the EOB char. */ + int yy_amount_of_matched_text = (int) (yy_cp - (yytext_ptr)) - 1; + + /* Undo the effects of YY_DO_BEFORE_ACTION. */ + *yy_cp = (yy_hold_char); + YY_RESTORE_YY_MORE_OFFSET + + if ( YY_CURRENT_BUFFER_LVALUE->yy_buffer_status == YY_BUFFER_NEW ) + { + /* We're scanning a new file or input source. It's + * possible that this happened because the user + * just pointed yyin at a new source and called + * yylex(). If so, then we have to assure + * consistency between YY_CURRENT_BUFFER and our + * globals. Here is the right place to do so, because + * this is the first action (other than possibly a + * back-up) that will match for the new input source. + */ + (yy_n_chars) = YY_CURRENT_BUFFER_LVALUE->yy_n_chars; + YY_CURRENT_BUFFER_LVALUE->yy_input_file = yyin; + YY_CURRENT_BUFFER_LVALUE->yy_buffer_status = YY_BUFFER_NORMAL; + } + + /* Note that here we test for yy_c_buf_p "<=" to the position + * of the first EOB in the buffer, since yy_c_buf_p will + * already have been incremented past the NUL character + * (since all states make transitions on EOB to the + * end-of-buffer state). Contrast this with the test + * in input(). + */ + if ( (yy_c_buf_p) <= &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars)] ) + { /* This was really a NUL. */ + yy_state_type yy_next_state; + + (yy_c_buf_p) = (yytext_ptr) + yy_amount_of_matched_text; + + yy_current_state = yy_get_previous_state( ); + + /* Okay, we're now positioned to make the NUL + * transition. We couldn't have + * yy_get_previous_state() go ahead and do it + * for us because it doesn't know how to deal + * with the possibility of jamming (and we don't + * want to build jamming into it because then it + * will run more slowly). + */ + + yy_next_state = yy_try_NUL_trans( yy_current_state ); + + yy_bp = (yytext_ptr) + YY_MORE_ADJ; + + if ( yy_next_state ) + { + /* Consume the NUL. */ + yy_cp = ++(yy_c_buf_p); + yy_current_state = yy_next_state; + goto yy_match; + } + + else + { + yy_cp = (yy_last_accepting_cpos); + yy_current_state = (yy_last_accepting_state); + goto yy_find_action; + } + } + + else switch ( yy_get_next_buffer( ) ) + { + case EOB_ACT_END_OF_FILE: + { + (yy_did_buffer_switch_on_eof) = 0; + + if ( yywrap( ) ) + { + /* Note: because we've taken care in + * yy_get_next_buffer() to have set up + * yytext, we can now set up + * yy_c_buf_p so that if some total + * hoser (like flex itself) wants to + * call the scanner after we return the + * YY_NULL, it'll still work - another + * YY_NULL will get returned. + */ + (yy_c_buf_p) = (yytext_ptr) + YY_MORE_ADJ; + + yy_act = YY_STATE_EOF(YY_START); + goto do_action; + } + + else + { + if ( ! (yy_did_buffer_switch_on_eof) ) + YY_NEW_FILE; + } + break; + } + + case EOB_ACT_CONTINUE_SCAN: + (yy_c_buf_p) = + (yytext_ptr) + yy_amount_of_matched_text; + + yy_current_state = yy_get_previous_state( ); + + yy_cp = (yy_c_buf_p); + yy_bp = (yytext_ptr) + YY_MORE_ADJ; + goto yy_match; + + case EOB_ACT_LAST_MATCH: + (yy_c_buf_p) = + &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars)]; + + yy_current_state = yy_get_previous_state( ); + + yy_cp = (yy_c_buf_p); + yy_bp = (yytext_ptr) + YY_MORE_ADJ; + goto yy_find_action; + } + break; + } + + default: + YY_FATAL_ERROR( + "fatal flex scanner internal error--no action found" ); + } /* end of action switch */ + } /* end of scanning one token */ +} /* end of yylex */ + +/* yy_get_next_buffer - try to read in a new buffer + * + * Returns a code representing an action: + * EOB_ACT_LAST_MATCH - + * EOB_ACT_CONTINUE_SCAN - continue scanning from current position + * EOB_ACT_END_OF_FILE - end of file + */ +static int yy_get_next_buffer (void) +{ + register char *dest = YY_CURRENT_BUFFER_LVALUE->yy_ch_buf; + register char *source = (yytext_ptr); + register int number_to_move, i; + int ret_val; + + if ( (yy_c_buf_p) > &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars) + 1] ) + YY_FATAL_ERROR( + "fatal flex scanner internal error--end of buffer missed" ); + + if ( YY_CURRENT_BUFFER_LVALUE->yy_fill_buffer == 0 ) + { /* Don't try to fill the buffer, so this is an EOF. */ + if ( (yy_c_buf_p) - (yytext_ptr) - YY_MORE_ADJ == 1 ) + { + /* We matched a single character, the EOB, so + * treat this as a final EOF. + */ + return EOB_ACT_END_OF_FILE; + } + + else + { + /* We matched some text prior to the EOB, first + * process it. + */ + return EOB_ACT_LAST_MATCH; + } + } + + /* Try to read more data. */ + + /* First move last chars to start of buffer. */ + number_to_move = (int) ((yy_c_buf_p) - (yytext_ptr)) - 1; + + for ( i = 0; i < number_to_move; ++i ) + *(dest++) = *(source++); + + if ( YY_CURRENT_BUFFER_LVALUE->yy_buffer_status == YY_BUFFER_EOF_PENDING ) + /* don't do the read, it's not guaranteed to return an EOF, + * just force an EOF + */ + YY_CURRENT_BUFFER_LVALUE->yy_n_chars = (yy_n_chars) = 0; + + else + { + size_t num_to_read = + YY_CURRENT_BUFFER_LVALUE->yy_buf_size - number_to_move - 1; + + while ( num_to_read <= 0 ) + { /* Not enough room in the buffer - grow it. */ + + /* just a shorter name for the current buffer */ + YY_BUFFER_STATE b = YY_CURRENT_BUFFER; + + int yy_c_buf_p_offset = + (int) ((yy_c_buf_p) - b->yy_ch_buf); + + if ( b->yy_is_our_buffer ) + { + int new_size = b->yy_buf_size * 2; + + if ( new_size <= 0 ) + b->yy_buf_size += b->yy_buf_size / 8; + else + b->yy_buf_size *= 2; + + b->yy_ch_buf = (char *) + /* Include room in for 2 EOB chars. */ + yyrealloc((void *) b->yy_ch_buf,b->yy_buf_size + 2 ); + } + else + /* Can't grow it, we don't own it. */ + b->yy_ch_buf = 0; + + if ( ! b->yy_ch_buf ) + YY_FATAL_ERROR( + "fatal error - scanner input buffer overflow" ); + + (yy_c_buf_p) = &b->yy_ch_buf[yy_c_buf_p_offset]; + + num_to_read = YY_CURRENT_BUFFER_LVALUE->yy_buf_size - + number_to_move - 1; + + } + + if ( num_to_read > YY_READ_BUF_SIZE ) + num_to_read = YY_READ_BUF_SIZE; + + /* Read in more data. */ + YY_INPUT( (&YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[number_to_move]), + (yy_n_chars), num_to_read ); + + YY_CURRENT_BUFFER_LVALUE->yy_n_chars = (yy_n_chars); + } + + if ( (yy_n_chars) == 0 ) + { + if ( number_to_move == YY_MORE_ADJ ) + { + ret_val = EOB_ACT_END_OF_FILE; + yyrestart(yyin ); + } + + else + { + ret_val = EOB_ACT_LAST_MATCH; + YY_CURRENT_BUFFER_LVALUE->yy_buffer_status = + YY_BUFFER_EOF_PENDING; + } + } + + else + ret_val = EOB_ACT_CONTINUE_SCAN; + + (yy_n_chars) += number_to_move; + YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars)] = YY_END_OF_BUFFER_CHAR; + YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars) + 1] = YY_END_OF_BUFFER_CHAR; + + (yytext_ptr) = &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[0]; + + return ret_val; +} + +/* yy_get_previous_state - get the state just before the EOB char was reached */ + + static yy_state_type yy_get_previous_state (void) +{ + register yy_state_type yy_current_state; + register char *yy_cp; + + yy_current_state = (yy_start); + + for ( yy_cp = (yytext_ptr) + YY_MORE_ADJ; yy_cp < (yy_c_buf_p); ++yy_cp ) + { + register YY_CHAR yy_c = (*yy_cp ? yy_ec[YY_SC_TO_UI(*yy_cp)] : 1); + if ( yy_accept[yy_current_state] ) + { + (yy_last_accepting_state) = yy_current_state; + (yy_last_accepting_cpos) = yy_cp; + } + while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state ) + { + yy_current_state = (int) yy_def[yy_current_state]; + if ( yy_current_state >= 399 ) + yy_c = yy_meta[(unsigned int) yy_c]; + } + yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c]; + } + + return yy_current_state; +} + +/* yy_try_NUL_trans - try to make a transition on the NUL character + * + * synopsis + * next_state = yy_try_NUL_trans( current_state ); + */ + static yy_state_type yy_try_NUL_trans (yy_state_type yy_current_state ) +{ + register int yy_is_jam; + register char *yy_cp = (yy_c_buf_p); + + register YY_CHAR yy_c = 1; + if ( yy_accept[yy_current_state] ) + { + (yy_last_accepting_state) = yy_current_state; + (yy_last_accepting_cpos) = yy_cp; + } + while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state ) + { + yy_current_state = (int) yy_def[yy_current_state]; + if ( yy_current_state >= 399 ) + yy_c = yy_meta[(unsigned int) yy_c]; + } + yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c]; + yy_is_jam = (yy_current_state == 398); + + return yy_is_jam ? 0 : yy_current_state; +} + +#ifndef YY_NO_INPUT +#ifdef __cplusplus + static int yyinput (void) +#else + static int input (void) +#endif + +{ + int c; + + *(yy_c_buf_p) = (yy_hold_char); + + if ( *(yy_c_buf_p) == YY_END_OF_BUFFER_CHAR ) + { + /* yy_c_buf_p now points to the character we want to return. + * If this occurs *before* the EOB characters, then it's a + * valid NUL; if not, then we've hit the end of the buffer. + */ + if ( (yy_c_buf_p) < &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars)] ) + /* This was really a NUL. */ + *(yy_c_buf_p) = '\0'; + + else + { /* need more input */ + int offset = (int)((yy_c_buf_p) - (yytext_ptr)); + ++(yy_c_buf_p); + + switch ( yy_get_next_buffer( ) ) + { + case EOB_ACT_LAST_MATCH: + /* This happens because yy_g_n_b() + * sees that we've accumulated a + * token and flags that we need to + * try matching the token before + * proceeding. But for input(), + * there's no matching to consider. + * So convert the EOB_ACT_LAST_MATCH + * to EOB_ACT_END_OF_FILE. + */ + + /* Reset buffer status. */ + yyrestart(yyin ); + + /*FALLTHROUGH*/ + + case EOB_ACT_END_OF_FILE: + { + if ( yywrap( ) ) + return EOF; + + if ( ! (yy_did_buffer_switch_on_eof) ) + YY_NEW_FILE; +#ifdef __cplusplus + return yyinput(); +#else + return input(); +#endif + } + + case EOB_ACT_CONTINUE_SCAN: + (yy_c_buf_p) = (yytext_ptr) + offset; + break; + } + } + } + + c = *(unsigned char *) (yy_c_buf_p); /* cast for 8-bit char's */ + *(yy_c_buf_p) = '\0'; /* preserve yytext */ + (yy_hold_char) = *++(yy_c_buf_p); + + return c; +} +#endif /* ifndef YY_NO_INPUT */ + +/** Immediately switch to a different input stream. + * @param input_file A readable stream. + * + * @note This function does not reset the start condition to @c INITIAL . + */ + static void yyrestart (FILE * input_file ) +{ + + if ( ! YY_CURRENT_BUFFER ){ + yyensure_buffer_stack (); + YY_CURRENT_BUFFER_LVALUE = + yy_create_buffer(yyin,YY_BUF_SIZE ); + } + + yy_init_buffer(YY_CURRENT_BUFFER,input_file ); + yy_load_buffer_state( ); +} + +/** Switch to a different input buffer. + * @param new_buffer The new input buffer. + * + */ + __attribute__((unused)) static void yy_switch_to_buffer (YY_BUFFER_STATE new_buffer ) +{ + + /* TODO. We should be able to replace this entire function body + * with + * yypop_buffer_state(); + * yypush_buffer_state(new_buffer); + */ + yyensure_buffer_stack (); + if ( YY_CURRENT_BUFFER == new_buffer ) + return; + + if ( YY_CURRENT_BUFFER ) + { + /* Flush out information for old buffer. */ + *(yy_c_buf_p) = (yy_hold_char); + YY_CURRENT_BUFFER_LVALUE->yy_buf_pos = (yy_c_buf_p); + YY_CURRENT_BUFFER_LVALUE->yy_n_chars = (yy_n_chars); + } + + YY_CURRENT_BUFFER_LVALUE = new_buffer; + yy_load_buffer_state( ); + + /* We don't actually know whether we did this switch during + * EOF (yywrap()) processing, but the only time this flag + * is looked at is after yywrap() is called, so it's safe + * to go ahead and always set it. + */ + (yy_did_buffer_switch_on_eof) = 1; +} + +static void yy_load_buffer_state (void) +{ + (yy_n_chars) = YY_CURRENT_BUFFER_LVALUE->yy_n_chars; + (yytext_ptr) = (yy_c_buf_p) = YY_CURRENT_BUFFER_LVALUE->yy_buf_pos; + yyin = YY_CURRENT_BUFFER_LVALUE->yy_input_file; + (yy_hold_char) = *(yy_c_buf_p); +} + +/** Allocate and initialize an input buffer state. + * @param file A readable stream. + * @param size The character buffer size in bytes. When in doubt, use @c YY_BUF_SIZE. + * + * @return the allocated buffer state. + */ + static YY_BUFFER_STATE yy_create_buffer (FILE * file, int size ) +{ + YY_BUFFER_STATE b; + + b = (YY_BUFFER_STATE) yyalloc(sizeof( struct yy_buffer_state ) ); + if ( ! b ) + YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" ); + + b->yy_buf_size = size; + + /* yy_ch_buf has to be 2 characters longer than the size given because + * we need to put in 2 end-of-buffer characters. + */ + b->yy_ch_buf = (char *) yyalloc(b->yy_buf_size + 2 ); + if ( ! b->yy_ch_buf ) + YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" ); + + b->yy_is_our_buffer = 1; + + yy_init_buffer(b,file ); + + return b; +} + +/** Destroy the buffer. + * @param b a buffer created with yy_create_buffer() + * + */ + static void yy_delete_buffer (YY_BUFFER_STATE b ) +{ + + if ( ! b ) + return; + + if ( b == YY_CURRENT_BUFFER ) /* Not sure if we should pop here. */ + YY_CURRENT_BUFFER_LVALUE = (YY_BUFFER_STATE) 0; + + if ( b->yy_is_our_buffer ) + yyfree((void *) b->yy_ch_buf ); + + yyfree((void *) b ); +} + +/* Initializes or reinitializes a buffer. + * This function is sometimes called more than once on the same buffer, + * such as during a yyrestart() or at EOF. + */ + static void yy_init_buffer (YY_BUFFER_STATE b, FILE * file ) + +{ + int oerrno = errno; + + yy_flush_buffer(b ); + + b->yy_input_file = file; + b->yy_fill_buffer = 1; + + /* If b is the current buffer, then yy_init_buffer was _probably_ + * called from yyrestart() or through yy_get_next_buffer. + * In that case, we don't want to reset the lineno or column. + */ + if (b != YY_CURRENT_BUFFER){ + b->yy_bs_lineno = 1; + b->yy_bs_column = 0; + } + + b->yy_is_interactive = 0; + + errno = oerrno; +} + +/** Discard all buffered characters. On the next scan, YY_INPUT will be called. + * @param b the buffer state to be flushed, usually @c YY_CURRENT_BUFFER. + * + */ + static void yy_flush_buffer (YY_BUFFER_STATE b ) +{ + if ( ! b ) + return; + + b->yy_n_chars = 0; + + /* We always need two end-of-buffer characters. The first causes + * a transition to the end-of-buffer state. The second causes + * a jam in that state. + */ + b->yy_ch_buf[0] = YY_END_OF_BUFFER_CHAR; + b->yy_ch_buf[1] = YY_END_OF_BUFFER_CHAR; + + b->yy_buf_pos = &b->yy_ch_buf[0]; + + b->yy_at_bol = 1; + b->yy_buffer_status = YY_BUFFER_NEW; + + if ( b == YY_CURRENT_BUFFER ) + yy_load_buffer_state( ); +} + +/** Pushes the new state onto the stack. The new state becomes + * the current state. This function will allocate the stack + * if necessary. + * @param new_buffer The new state. + * + */ +__attribute__((unused)) static void yypush_buffer_state (YY_BUFFER_STATE new_buffer ) +{ + if (new_buffer == NULL) + return; + + yyensure_buffer_stack(); + + /* This block is copied from yy_switch_to_buffer. */ + if ( YY_CURRENT_BUFFER ) + { + /* Flush out information for old buffer. */ + *(yy_c_buf_p) = (yy_hold_char); + YY_CURRENT_BUFFER_LVALUE->yy_buf_pos = (yy_c_buf_p); + YY_CURRENT_BUFFER_LVALUE->yy_n_chars = (yy_n_chars); + } + + /* Only push if top exists. Otherwise, replace top. */ + if (YY_CURRENT_BUFFER) + (yy_buffer_stack_top)++; + YY_CURRENT_BUFFER_LVALUE = new_buffer; + + /* copied from yy_switch_to_buffer. */ + yy_load_buffer_state( ); + (yy_did_buffer_switch_on_eof) = 1; +} + +/** Removes and deletes the top of the stack, if present. + * The next element becomes the new top. + * + */ +__attribute__((unused)) static void yypop_buffer_state (void) +{ + if (!YY_CURRENT_BUFFER) + return; + + yy_delete_buffer(YY_CURRENT_BUFFER ); + YY_CURRENT_BUFFER_LVALUE = NULL; + if ((yy_buffer_stack_top) > 0) + --(yy_buffer_stack_top); + + if (YY_CURRENT_BUFFER) { + yy_load_buffer_state( ); + (yy_did_buffer_switch_on_eof) = 1; + } +} + +/* Allocates the stack if it does not exist. + * Guarantees space for at least one push. + */ +static void yyensure_buffer_stack (void) +{ + int num_to_alloc; + + if (!(yy_buffer_stack)) { + + /* First allocation is just for 2 elements, since we don't know if this + * scanner will even need a stack. We use 2 instead of 1 to avoid an + * immediate realloc on the next call. + */ + num_to_alloc = 1; + (yy_buffer_stack) = (struct yy_buffer_state**)yyalloc + (num_to_alloc * sizeof(struct yy_buffer_state*) + ); + + memset((yy_buffer_stack), 0, num_to_alloc * sizeof(struct yy_buffer_state*)); + + (yy_buffer_stack_max) = num_to_alloc; + (yy_buffer_stack_top) = 0; + return; + } + + if ((yy_buffer_stack_top) >= ((yy_buffer_stack_max)) - 1){ + + /* Increase the buffer to prepare for a possible push. */ + int grow_size = 8 /* arbitrary grow size */; + + num_to_alloc = (yy_buffer_stack_max) + grow_size; + (yy_buffer_stack) = (struct yy_buffer_state**)yyrealloc + ((yy_buffer_stack), + num_to_alloc * sizeof(struct yy_buffer_state*) + ); + + /* zero only the new slots.*/ + memset((yy_buffer_stack) + (yy_buffer_stack_max), 0, grow_size * sizeof(struct yy_buffer_state*)); + (yy_buffer_stack_max) = num_to_alloc; + } +} + +#ifndef YY_EXIT_FAILURE +#define YY_EXIT_FAILURE 2 +#endif + +static void yy_fatal_error (yyconst char* msg ) +{ + (void) fprintf( stderr, "%s\n", msg ); + exit( YY_EXIT_FAILURE ); +} + +/* Redefine yyless() so it works in section 3 code. */ + +#undef yyless +#define yyless(n) \ + do \ + { \ + /* Undo effects of setting up yytext. */ \ + int yyless_macro_arg = (n); \ + YY_LESS_LINENO(yyless_macro_arg);\ + yytext[yyleng] = (yy_hold_char); \ + (yy_c_buf_p) = yytext + yyless_macro_arg; \ + (yy_hold_char) = *(yy_c_buf_p); \ + *(yy_c_buf_p) = '\0'; \ + yyleng = yyless_macro_arg; \ + } \ + while ( 0 ) + +/* Accessor methods (get/set functions) to struct members. */ + +/** Get the current line number. + * + */ +__attribute__((unused)) static int yyget_lineno (void) +{ + + return yylineno; +} + +/** Get the input stream. + * + */ +__attribute__((unused)) static FILE *yyget_in (void) +{ + return yyin; +} + +/** Get the output stream. + * + */ +__attribute__((unused)) static FILE *yyget_out (void) +{ + return yyout; +} + +/** Get the length of the current token. + * + */ +__attribute__((unused)) static int yyget_leng (void) +{ + return yyleng; +} + +/** Get the current token. + * + */ + +__attribute__((unused)) static char *yyget_text (void) +{ + return yytext; +} + +/** Set the current line number. + * @param line_number + * + */ +__attribute__((unused)) static void yyset_lineno (int line_number ) +{ + + yylineno = line_number; +} + +/** Set the input stream. This does not discard the current + * input buffer. + * @param in_str A readable stream. + * + * @see yy_switch_to_buffer + */ +__attribute__((unused)) static void yyset_in (FILE * in_str ) +{ + yyin = in_str ; +} + +__attribute__((unused)) static void yyset_out (FILE * out_str ) +{ + yyout = out_str ; +} + +__attribute__((unused)) static int yyget_debug (void) +{ + return yy_flex_debug; +} + +__attribute__((unused)) static void yyset_debug (int bdebug ) +{ + yy_flex_debug = bdebug ; +} + +/* yylex_destroy is for both reentrant and non-reentrant scanners. */ +__attribute__((unused)) static int yylex_destroy (void) +{ + + /* Pop the buffer stack, destroying each element. */ + while(YY_CURRENT_BUFFER){ + yy_delete_buffer(YY_CURRENT_BUFFER ); + YY_CURRENT_BUFFER_LVALUE = NULL; + yypop_buffer_state(); + } + + /* Destroy the stack itself. */ + yyfree((yy_buffer_stack) ); + (yy_buffer_stack) = NULL; + + return 0; +} + +/* + * Internal utility routines. + */ + +#ifndef yytext_ptr +static void yy_flex_strncpy (char* s1, yyconst char * s2, int n ) +{ + register int i; + for ( i = 0; i < n; ++i ) + s1[i] = s2[i]; +} +#endif + +#ifdef YY_NEED_STRLEN +static int yy_flex_strlen (yyconst char * s ) +{ + register int n; + for ( n = 0; s[n]; ++n ) + ; + + return n; +} +#endif + +static void *yyalloc (yy_size_t size ) +{ + return (void *) malloc( size ); +} + +static void *yyrealloc (void * ptr, yy_size_t size ) +{ + /* The cast to (char *) in the following accommodates both + * implementations that use char* generic pointers, and those + * that use void* generic pointers. It works with the latter + * because both ANSI C and C++ allow castless assignment from + * any pointer type to void*, and deal with argument conversions + * as though doing an assignment. + */ + return (void *) realloc( (char *) ptr, size ); +} + +static void yyfree (void * ptr ) +{ + free( (char *) ptr ); /* see yyrealloc() for (char *) cast */ +} + +#define YYTABLES_NAME "yytables" + +#undef YY_NEW_FILE +#undef YY_FLUSH_BUFFER +#undef yy_set_bol +#undef yy_new_buffer +#undef yy_set_interactive +#undef yytext_ptr +#undef YY_DO_BEFORE_ACTION + +#ifdef YY_DECL_IS_OURS +#undef YY_DECL_IS_OURS +#undef YY_DECL +#endif +#line 648 "pars0lex.l" + + + === added file 'storage/xtradb/pars/make_bison.sh' --- a/storage/xtradb/pars/make_bison.sh 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/pars/make_bison.sh 2009-03-26 06:11:11 +0000 @@ -0,0 +1,32 @@ +#!/bin/bash +# +# Copyright (c) 2006, 2009, Innobase Oy. All Rights Reserved. +# +# This program is free software; you can redistribute it and/or modify it under +# the terms of the GNU General Public License as published by the Free Software +# Foundation; version 2 of the License. +# +# This program is distributed in the hope that it will be useful, but WITHOUT +# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License along with +# this program; if not, write to the Free Software Foundation, Inc., 59 Temple +# Place, Suite 330, Boston, MA 02111-1307 USA +# +# generate parser files from bison input files. + +set -eu +TMPFILE=pars0grm.tab.c +OUTFILE=pars0grm.c + +bison -d pars0grm.y +mv pars0grm.tab.h ../include/pars0grm.h + +sed -e ' +s/'"$TMPFILE"'/'"$OUTFILE"'/; +s/^$\(YYSTYPE\|int$ yy$char\|nerrs$\)/static \1/; +s/$\(YYSTYPE\|int$ yy$lval\|parse$\)/UNIV_INTERN \1/; +' < "$TMPFILE" > "$OUTFILE" + +rm "$TMPFILE" === added file 'storage/xtradb/pars/make_flex.sh' --- a/storage/xtradb/pars/make_flex.sh 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/pars/make_flex.sh 2009-03-26 06:11:11 +0000 @@ -0,0 +1,48 @@ +#!/bin/bash +# +# Copyright (c) 2006, 2009, Innobase Oy. All Rights Reserved. +# +# This program is free software; you can redistribute it and/or modify it under +# the terms of the GNU General Public License as published by the Free Software +# Foundation; version 2 of the License. +# +# This program is distributed in the hope that it will be useful, but WITHOUT +# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License along with +# this program; if not, write to the Free Software Foundation, Inc., 59 Temple +# Place, Suite 330, Boston, MA 02111-1307 USA +# +# generate lexer files from flex input files. + +set -eu + +TMPFILE=_flex_tmp.c +OUTFILE=lexyy.c + +flex -o $TMPFILE pars0lex.l + +# AIX needs its includes done in a certain order, so include "univ.i" first +# to be sure we get it right. +echo '#include "univ.i"' > $OUTFILE + +# flex assigns a pointer to an int in one place without a cast, resulting in +# a warning on Win64. Add the cast. Also define some symbols as static. +sed -e ' +s/'"$TMPFILE"'/'"$OUTFILE"'/; +s/$int offset = $$(yy_c_buf_p) - (yytext_ptr)$;/\1(int)(\2);/; +s/$void yy\(restart\|_\(delete\|flush$_buffer\)\)/static \1/; +s/$void yy_switch_to_buffer$/__attribute__((unused)) static \1/; +s/$void yy\(push\|pop$_buffer_state\)/__attribute__((unused)) static \1/; +s/$YY_BUFFER_STATE yy_create_buffer$/static \1/; +s/$\(int\|void$ yy[gs]et_\)/__attribute__((unused)) static \1/; +s/$void \*\?yy\(\(re$\?alloc\|free\)\)/static \1/; +s/$extern $\?$int yy\(leng\|lineno\|_flex_debug$\)/static \2/; +s/$int yylex_destroy$/__attribute__((unused)) static \1/; +s/$extern $\?$int yylex $/UNIV_INTERN \2/; +s/^$\(FILE\|char$ *\* *yyget\)/__attribute__((unused)) static \1/; +s/^$extern $\?$\(FILE\|char$ *\* *yy\)/static \2/; +' < $TMPFILE >> $OUTFILE + +rm $TMPFILE === added file 'storage/xtradb/pars/pars0grm.c' --- a/storage/xtradb/pars/pars0grm.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/pars/pars0grm.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,2601 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. +Copyright (c) 1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004 Free Software +Foundation, Inc. + +As a special exception, when this file is copied by Bison into a +Bison output file, you may use that output file without restriction. +This special exception was added by the Free Software Foundation +in version 1.24 of Bison. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/* A Bison parser, made by GNU Bison 2.0. */ + +/* Written by Richard Stallman by simplifying the original so called + ``semantic'' parser. */ + +/* All symbols defined below should begin with yy or YY, to avoid + infringing on user name space. This should be done even for local + variables, as they might otherwise be expanded by user macros. + There are some unavoidable exceptions within include files to + define necessary library symbols; they are noted "INFRINGES ON + USER NAME SPACE" below. */ + +/* Identify Bison output. */ +#define YYBISON 1 + +/* Skeleton name. */ +#define YYSKELETON_NAME "yacc.c" + +/* Pure parsers. */ +#define YYPURE 0 + +/* Using locations. */ +#define YYLSP_NEEDED 0 + + + +/* Tokens. */ +#ifndef YYTOKENTYPE +# define YYTOKENTYPE + /* Put the tokens into the symbol table, so that GDB and other debuggers + know about them. */ + enum yytokentype { + PARS_INT_LIT = 258, + PARS_FLOAT_LIT = 259, + PARS_STR_LIT = 260, + PARS_FIXBINARY_LIT = 261, + PARS_BLOB_LIT = 262, + PARS_NULL_LIT = 263, + PARS_ID_TOKEN = 264, + PARS_AND_TOKEN = 265, + PARS_OR_TOKEN = 266, + PARS_NOT_TOKEN = 267, + PARS_GE_TOKEN = 268, + PARS_LE_TOKEN = 269, + PARS_NE_TOKEN = 270, + PARS_PROCEDURE_TOKEN = 271, + PARS_IN_TOKEN = 272, + PARS_OUT_TOKEN = 273, + PARS_BINARY_TOKEN = 274, + PARS_BLOB_TOKEN = 275, + PARS_INT_TOKEN = 276, + PARS_INTEGER_TOKEN = 277, + PARS_FLOAT_TOKEN = 278, + PARS_CHAR_TOKEN = 279, + PARS_IS_TOKEN = 280, + PARS_BEGIN_TOKEN = 281, + PARS_END_TOKEN = 282, + PARS_IF_TOKEN = 283, + PARS_THEN_TOKEN = 284, + PARS_ELSE_TOKEN = 285, + PARS_ELSIF_TOKEN = 286, + PARS_LOOP_TOKEN = 287, + PARS_WHILE_TOKEN = 288, + PARS_RETURN_TOKEN = 289, + PARS_SELECT_TOKEN = 290, + PARS_SUM_TOKEN = 291, + PARS_COUNT_TOKEN = 292, + PARS_DISTINCT_TOKEN = 293, + PARS_FROM_TOKEN = 294, + PARS_WHERE_TOKEN = 295, + PARS_FOR_TOKEN = 296, + PARS_DDOT_TOKEN = 297, + PARS_READ_TOKEN = 298, + PARS_ORDER_TOKEN = 299, + PARS_BY_TOKEN = 300, + PARS_ASC_TOKEN = 301, + PARS_DESC_TOKEN = 302, + PARS_INSERT_TOKEN = 303, + PARS_INTO_TOKEN = 304, + PARS_VALUES_TOKEN = 305, + PARS_UPDATE_TOKEN = 306, + PARS_SET_TOKEN = 307, + PARS_DELETE_TOKEN = 308, + PARS_CURRENT_TOKEN = 309, + PARS_OF_TOKEN = 310, + PARS_CREATE_TOKEN = 311, + PARS_TABLE_TOKEN = 312, + PARS_INDEX_TOKEN = 313, + PARS_UNIQUE_TOKEN = 314, + PARS_CLUSTERED_TOKEN = 315, + PARS_DOES_NOT_FIT_IN_MEM_TOKEN = 316, + PARS_ON_TOKEN = 317, + PARS_ASSIGN_TOKEN = 318, + PARS_DECLARE_TOKEN = 319, + PARS_CURSOR_TOKEN = 320, + PARS_SQL_TOKEN = 321, + PARS_OPEN_TOKEN = 322, + PARS_FETCH_TOKEN = 323, + PARS_CLOSE_TOKEN = 324, + PARS_NOTFOUND_TOKEN = 325, + PARS_TO_CHAR_TOKEN = 326, + PARS_TO_NUMBER_TOKEN = 327, + PARS_TO_BINARY_TOKEN = 328, + PARS_BINARY_TO_NUMBER_TOKEN = 329, + PARS_SUBSTR_TOKEN = 330, + PARS_REPLSTR_TOKEN = 331, + PARS_CONCAT_TOKEN = 332, + PARS_INSTR_TOKEN = 333, + PARS_LENGTH_TOKEN = 334, + PARS_SYSDATE_TOKEN = 335, + PARS_PRINTF_TOKEN = 336, + PARS_ASSERT_TOKEN = 337, + PARS_RND_TOKEN = 338, + PARS_RND_STR_TOKEN = 339, + PARS_ROW_PRINTF_TOKEN = 340, + PARS_COMMIT_TOKEN = 341, + PARS_ROLLBACK_TOKEN = 342, + PARS_WORK_TOKEN = 343, + PARS_UNSIGNED_TOKEN = 344, + PARS_EXIT_TOKEN = 345, + PARS_FUNCTION_TOKEN = 346, + PARS_LOCK_TOKEN = 347, + PARS_SHARE_TOKEN = 348, + PARS_MODE_TOKEN = 349, + NEG = 350 + }; +#endif +#define PARS_INT_LIT 258 +#define PARS_FLOAT_LIT 259 +#define PARS_STR_LIT 260 +#define PARS_FIXBINARY_LIT 261 +#define PARS_BLOB_LIT 262 +#define PARS_NULL_LIT 263 +#define PARS_ID_TOKEN 264 +#define PARS_AND_TOKEN 265 +#define PARS_OR_TOKEN 266 +#define PARS_NOT_TOKEN 267 +#define PARS_GE_TOKEN 268 +#define PARS_LE_TOKEN 269 +#define PARS_NE_TOKEN 270 +#define PARS_PROCEDURE_TOKEN 271 +#define PARS_IN_TOKEN 272 +#define PARS_OUT_TOKEN 273 +#define PARS_BINARY_TOKEN 274 +#define PARS_BLOB_TOKEN 275 +#define PARS_INT_TOKEN 276 +#define PARS_INTEGER_TOKEN 277 +#define PARS_FLOAT_TOKEN 278 +#define PARS_CHAR_TOKEN 279 +#define PARS_IS_TOKEN 280 +#define PARS_BEGIN_TOKEN 281 +#define PARS_END_TOKEN 282 +#define PARS_IF_TOKEN 283 +#define PARS_THEN_TOKEN 284 +#define PARS_ELSE_TOKEN 285 +#define PARS_ELSIF_TOKEN 286 +#define PARS_LOOP_TOKEN 287 +#define PARS_WHILE_TOKEN 288 +#define PARS_RETURN_TOKEN 289 +#define PARS_SELECT_TOKEN 290 +#define PARS_SUM_TOKEN 291 +#define PARS_COUNT_TOKEN 292 +#define PARS_DISTINCT_TOKEN 293 +#define PARS_FROM_TOKEN 294 +#define PARS_WHERE_TOKEN 295 +#define PARS_FOR_TOKEN 296 +#define PARS_DDOT_TOKEN 297 +#define PARS_READ_TOKEN 298 +#define PARS_ORDER_TOKEN 299 +#define PARS_BY_TOKEN 300 +#define PARS_ASC_TOKEN 301 +#define PARS_DESC_TOKEN 302 +#define PARS_INSERT_TOKEN 303 +#define PARS_INTO_TOKEN 304 +#define PARS_VALUES_TOKEN 305 +#define PARS_UPDATE_TOKEN 306 +#define PARS_SET_TOKEN 307 +#define PARS_DELETE_TOKEN 308 +#define PARS_CURRENT_TOKEN 309 +#define PARS_OF_TOKEN 310 +#define PARS_CREATE_TOKEN 311 +#define PARS_TABLE_TOKEN 312 +#define PARS_INDEX_TOKEN 313 +#define PARS_UNIQUE_TOKEN 314 +#define PARS_CLUSTERED_TOKEN 315 +#define PARS_DOES_NOT_FIT_IN_MEM_TOKEN 316 +#define PARS_ON_TOKEN 317 +#define PARS_ASSIGN_TOKEN 318 +#define PARS_DECLARE_TOKEN 319 +#define PARS_CURSOR_TOKEN 320 +#define PARS_SQL_TOKEN 321 +#define PARS_OPEN_TOKEN 322 +#define PARS_FETCH_TOKEN 323 +#define PARS_CLOSE_TOKEN 324 +#define PARS_NOTFOUND_TOKEN 325 +#define PARS_TO_CHAR_TOKEN 326 +#define PARS_TO_NUMBER_TOKEN 327 +#define PARS_TO_BINARY_TOKEN 328 +#define PARS_BINARY_TO_NUMBER_TOKEN 329 +#define PARS_SUBSTR_TOKEN 330 +#define PARS_REPLSTR_TOKEN 331 +#define PARS_CONCAT_TOKEN 332 +#define PARS_INSTR_TOKEN 333 +#define PARS_LENGTH_TOKEN 334 +#define PARS_SYSDATE_TOKEN 335 +#define PARS_PRINTF_TOKEN 336 +#define PARS_ASSERT_TOKEN 337 +#define PARS_RND_TOKEN 338 +#define PARS_RND_STR_TOKEN 339 +#define PARS_ROW_PRINTF_TOKEN 340 +#define PARS_COMMIT_TOKEN 341 +#define PARS_ROLLBACK_TOKEN 342 +#define PARS_WORK_TOKEN 343 +#define PARS_UNSIGNED_TOKEN 344 +#define PARS_EXIT_TOKEN 345 +#define PARS_FUNCTION_TOKEN 346 +#define PARS_LOCK_TOKEN 347 +#define PARS_SHARE_TOKEN 348 +#define PARS_MODE_TOKEN 349 +#define NEG 350 + + + + +/* Copy the first part of user declarations. */ +#line 13 "pars0grm.y" + +/* The value of the semantic attribute is a pointer to a query tree node +que_node_t */ + +#include "univ.i" +#include <math.h> /* Can't be before univ.i */ +#include "pars0pars.h" +#include "mem0mem.h" +#include "que0types.h" +#include "que0que.h" +#include "row0sel.h" + +#define YYSTYPE que_node_t* + +/* #define __STDC__ */ + +int +yylex(void); + + +/* Enabling traces. */ +#ifndef YYDEBUG +# define YYDEBUG 0 +#endif + +/* Enabling verbose error messages. */ +#ifdef YYERROR_VERBOSE +# undef YYERROR_VERBOSE +# define YYERROR_VERBOSE 1 +#else +# define YYERROR_VERBOSE 0 +#endif + +#if ! defined (YYSTYPE) && ! defined (YYSTYPE_IS_DECLARED) +typedef int YYSTYPE; +# define yystype YYSTYPE /* obsolescent; will be withdrawn */ +# define YYSTYPE_IS_DECLARED 1 +# define YYSTYPE_IS_TRIVIAL 1 +#endif + + + +/* Copy the second part of user declarations. */ + + +/* Line 213 of yacc.c. */ +#line 297 "pars0grm.c" + +#if ! defined (yyoverflow) || YYERROR_VERBOSE + +# ifndef YYFREE +# define YYFREE free +# endif +# ifndef YYMALLOC +# define YYMALLOC malloc +# endif + +/* The parser invokes alloca or malloc; define the necessary symbols. */ + +# ifdef YYSTACK_USE_ALLOCA +# if YYSTACK_USE_ALLOCA +# ifdef __GNUC__ +# define YYSTACK_ALLOC __builtin_alloca +# else +# define YYSTACK_ALLOC alloca +# endif +# endif +# endif + +# ifdef YYSTACK_ALLOC + /* Pacify GCC's `empty if-body' warning. */ +# define YYSTACK_FREE(Ptr) do { /* empty */; } while (0) +# else +# if defined (__STDC__) || defined (__cplusplus) +# include <stdlib.h> /* INFRINGES ON USER NAME SPACE */ +# define YYSIZE_T size_t +# endif +# define YYSTACK_ALLOC YYMALLOC +# define YYSTACK_FREE YYFREE +# endif +#endif /* ! defined (yyoverflow) || YYERROR_VERBOSE */ + + +#if (! defined (yyoverflow) \ + && (! defined (__cplusplus) \ + || (defined (YYSTYPE_IS_TRIVIAL) && YYSTYPE_IS_TRIVIAL))) + +/* A type that is properly aligned for any stack member. */ +union yyalloc +{ + short int yyss; + YYSTYPE yyvs; + }; + +/* The size of the maximum gap between one aligned stack and the next. */ +# define YYSTACK_GAP_MAXIMUM (sizeof (union yyalloc) - 1) + +/* The size of an array large to enough to hold all stacks, each with + N elements. */ +# define YYSTACK_BYTES(N) \ + ((N) * (sizeof (short int) + sizeof (YYSTYPE)) \ + + YYSTACK_GAP_MAXIMUM) + +/* Copy COUNT objects from FROM to TO. The source and destination do + not overlap. */ +# ifndef YYCOPY +# if defined (__GNUC__) && 1 < __GNUC__ +# define YYCOPY(To, From, Count) \ + __builtin_memcpy (To, From, (Count) * sizeof (*(From))) +# else +# define YYCOPY(To, From, Count) \ + do \ + { \ + register YYSIZE_T yyi; \ + for (yyi = 0; yyi < (Count); yyi++) \ + (To)[yyi] = (From)[yyi]; \ + } \ + while (0) +# endif +# endif + +/* Relocate STACK from its old location to the new one. The + local variables YYSIZE and YYSTACKSIZE give the old and new number of + elements in the stack, and YYPTR gives the new location of the + stack. Advance YYPTR to a properly aligned location for the next + stack. */ +# define YYSTACK_RELOCATE(Stack) \ + do \ + { \ + YYSIZE_T yynewbytes; \ + YYCOPY (&yyptr->Stack, Stack, yysize); \ + Stack = &yyptr->Stack; \ + yynewbytes = yystacksize * sizeof (*Stack) + YYSTACK_GAP_MAXIMUM; \ + yyptr += yynewbytes / sizeof (*yyptr); \ + } \ + while (0) + +#endif + +#if defined (__STDC__) || defined (__cplusplus) + typedef signed char yysigned_char; +#else + typedef short int yysigned_char; +#endif + +/* YYFINAL -- State number of the termination state. */ +#define YYFINAL 5 +/* YYLAST -- Last index in YYTABLE. */ +#define YYLAST 752 + +/* YYNTOKENS -- Number of terminals. */ +#define YYNTOKENS 111 +/* YYNNTS -- Number of nonterminals. */ +#define YYNNTS 70 +/* YYNRULES -- Number of rules. */ +#define YYNRULES 175 +/* YYNRULES -- Number of states. */ +#define YYNSTATES 339 + +/* YYTRANSLATE(YYLEX) -- Bison symbol number corresponding to YYLEX. */ +#define YYUNDEFTOK 2 +#define YYMAXUTOK 350 + +#define YYTRANSLATE(YYX) \ + ((unsigned int) (YYX) <= YYMAXUTOK ? yytranslate[YYX] : YYUNDEFTOK) + +/* YYTRANSLATE[YYLEX] -- Bison symbol number corresponding to YYLEX. */ +static const unsigned char yytranslate[] = +{ + 0, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 103, 2, 2, + 105, 106, 100, 99, 108, 98, 2, 101, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 104, + 96, 95, 97, 107, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 109, 2, 110, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 1, 2, 3, 4, + 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, + 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, + 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, + 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, + 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, + 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, + 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, + 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, + 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, + 102 +}; + +#if YYDEBUG +/* YYPRHS[YYN] -- Index of the first RHS symbol of rule number YYN in + YYRHS. */ +static const unsigned short int yyprhs[] = +{ + 0, 0, 3, 6, 8, 11, 14, 17, 20, 23, + 26, 29, 32, 35, 38, 41, 44, 47, 50, 53, + 56, 59, 62, 65, 68, 71, 73, 76, 78, 83, + 85, 87, 89, 91, 93, 95, 97, 101, 105, 109, + 113, 116, 120, 124, 128, 132, 136, 140, 144, 148, + 152, 155, 159, 163, 165, 167, 169, 171, 173, 175, + 177, 179, 181, 183, 185, 186, 188, 192, 199, 204, + 206, 208, 210, 214, 216, 220, 221, 223, 227, 228, + 230, 234, 236, 241, 247, 252, 253, 255, 259, 261, + 265, 267, 268, 271, 272, 275, 276, 281, 282, 284, + 286, 287, 292, 301, 305, 311, 314, 318, 320, 324, + 329, 334, 337, 340, 344, 347, 350, 353, 357, 362, + 364, 367, 368, 371, 373, 381, 388, 399, 401, 403, + 406, 409, 414, 419, 425, 427, 431, 432, 436, 437, + 439, 440, 443, 444, 446, 454, 456, 460, 461, 463, + 464, 466, 477, 480, 483, 485, 487, 489, 491, 493, + 497, 501, 502, 504, 508, 512, 513, 515, 518, 525, + 530, 532, 534, 535, 537, 540 +}; + +/* YYRHS -- A `-1'-separated list of the rules' RHS. */ +static const short int yyrhs[] = +{ + 112, 0, -1, 180, 104, -1, 118, -1, 119, 104, + -1, 151, 104, -1, 152, 104, -1, 153, 104, -1, + 150, 104, -1, 154, 104, -1, 146, 104, -1, 133, + 104, -1, 135, 104, -1, 145, 104, -1, 143, 104, + -1, 144, 104, -1, 140, 104, -1, 141, 104, -1, + 155, 104, -1, 157, 104, -1, 156, 104, -1, 169, + 104, -1, 170, 104, -1, 164, 104, -1, 168, 104, + -1, 113, -1, 114, 113, -1, 9, -1, 116, 105, + 124, 106, -1, 3, -1, 4, -1, 5, -1, 6, + -1, 7, -1, 8, -1, 66, -1, 115, 99, 115, + -1, 115, 98, 115, -1, 115, 100, 115, -1, 115, + 101, 115, -1, 98, 115, -1, 105, 115, 106, -1, + 115, 95, 115, -1, 115, 96, 115, -1, 115, 97, + 115, -1, 115, 13, 115, -1, 115, 14, 115, -1, + 115, 15, 115, -1, 115, 10, 115, -1, 115, 11, + 115, -1, 12, 115, -1, 9, 103, 70, -1, 66, + 103, 70, -1, 71, -1, 72, -1, 73, -1, 74, + -1, 75, -1, 77, -1, 78, -1, 79, -1, 80, + -1, 83, -1, 84, -1, -1, 107, -1, 117, 108, + 107, -1, 109, 9, 105, 117, 106, 110, -1, 120, + 105, 124, 106, -1, 76, -1, 81, -1, 82, -1, + 9, 105, 106, -1, 9, -1, 122, 108, 9, -1, + -1, 9, -1, 123, 108, 9, -1, -1, 115, -1, + 124, 108, 115, -1, 115, -1, 37, 105, 100, 106, + -1, 37, 105, 38, 9, 106, -1, 36, 105, 115, + 106, -1, -1, 125, -1, 126, 108, 125, -1, 100, + -1, 126, 49, 123, -1, 126, -1, -1, 40, 115, + -1, -1, 41, 51, -1, -1, 92, 17, 93, 94, + -1, -1, 46, -1, 47, -1, -1, 44, 45, 9, + 131, -1, 35, 127, 39, 122, 128, 129, 130, 132, + -1, 48, 49, 9, -1, 134, 50, 105, 124, 106, + -1, 134, 133, -1, 9, 95, 115, -1, 136, -1, + 137, 108, 136, -1, 40, 54, 55, 9, -1, 51, + 9, 52, 137, -1, 139, 128, -1, 139, 138, -1, + 53, 39, 9, -1, 142, 128, -1, 142, 138, -1, + 85, 133, -1, 9, 63, 115, -1, 31, 115, 29, + 114, -1, 147, -1, 148, 147, -1, -1, 30, 114, + -1, 148, -1, 28, 115, 29, 114, 149, 27, 28, + -1, 33, 115, 32, 114, 27, 32, -1, 41, 9, + 17, 115, 42, 115, 32, 114, 27, 32, -1, 90, + -1, 34, -1, 67, 9, -1, 69, 9, -1, 68, + 9, 49, 123, -1, 68, 9, 49, 121, -1, 9, + 171, 160, 161, 162, -1, 158, -1, 159, 108, 158, + -1, -1, 105, 3, 106, -1, -1, 89, -1, -1, + 12, 8, -1, -1, 61, -1, 56, 57, 9, 105, + 159, 106, 163, -1, 9, -1, 165, 108, 9, -1, + -1, 59, -1, -1, 60, -1, 56, 166, 167, 58, + 9, 62, 9, 105, 165, 106, -1, 86, 88, -1, + 87, 88, -1, 21, -1, 22, -1, 24, -1, 19, + -1, 20, -1, 9, 17, 171, -1, 9, 18, 171, + -1, -1, 172, -1, 173, 108, 172, -1, 9, 171, + 104, -1, -1, 174, -1, 175, 174, -1, 64, 65, + 9, 25, 133, 104, -1, 64, 91, 9, 104, -1, + 176, -1, 177, -1, -1, 178, -1, 179, 178, -1, + 16, 9, 105, 173, 106, 25, 175, 179, 26, 114, + 27, -1 +}; + +/* YYRLINE[YYN] -- source line where rule number YYN was defined. */ +static const unsigned short int yyrline[] = +{ + 0, 138, 138, 141, 142, 143, 144, 145, 146, 147, + 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, + 158, 159, 160, 161, 162, 166, 167, 172, 173, 175, + 176, 177, 178, 179, 180, 181, 182, 183, 184, 185, + 186, 187, 188, 189, 190, 191, 192, 193, 194, 195, + 196, 197, 199, 204, 205, 206, 207, 209, 210, 211, + 212, 213, 214, 215, 218, 220, 221, 225, 230, 235, + 236, 237, 241, 245, 246, 251, 252, 253, 258, 259, + 260, 264, 265, 270, 276, 283, 284, 285, 290, 292, + 294, 298, 299, 303, 304, 309, 310, 315, 316, 317, + 321, 322, 327, 337, 342, 344, 349, 353, 354, 359, + 365, 372, 377, 382, 388, 393, 398, 403, 408, 414, + 415, 420, 421, 423, 427, 434, 440, 448, 452, 456, + 462, 468, 470, 475, 480, 481, 486, 487, 492, 493, + 499, 500, 506, 507, 513, 519, 520, 525, 526, 530, + 531, 535, 543, 548, 553, 554, 555, 556, 557, 561, + 564, 570, 571, 572, 577, 581, 583, 584, 588, 594, + 599, 600, 603, 605, 606, 610 +}; +#endif + +#if YYDEBUG || YYERROR_VERBOSE +/* YYTNME[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM. + First, the terminals, then, starting at YYNTOKENS, nonterminals. */ +static const char *const yytname[] = +{ + "$end", "error", "$undefined", "PARS_INT_LIT", "PARS_FLOAT_LIT", + "PARS_STR_LIT", "PARS_FIXBINARY_LIT", "PARS_BLOB_LIT", "PARS_NULL_LIT", + "PARS_ID_TOKEN", "PARS_AND_TOKEN", "PARS_OR_TOKEN", "PARS_NOT_TOKEN", + "PARS_GE_TOKEN", "PARS_LE_TOKEN", "PARS_NE_TOKEN", + "PARS_PROCEDURE_TOKEN", "PARS_IN_TOKEN", "PARS_OUT_TOKEN", + "PARS_BINARY_TOKEN", "PARS_BLOB_TOKEN", "PARS_INT_TOKEN", + "PARS_INTEGER_TOKEN", "PARS_FLOAT_TOKEN", "PARS_CHAR_TOKEN", + "PARS_IS_TOKEN", "PARS_BEGIN_TOKEN", "PARS_END_TOKEN", "PARS_IF_TOKEN", + "PARS_THEN_TOKEN", "PARS_ELSE_TOKEN", "PARS_ELSIF_TOKEN", + "PARS_LOOP_TOKEN", "PARS_WHILE_TOKEN", "PARS_RETURN_TOKEN", + "PARS_SELECT_TOKEN", "PARS_SUM_TOKEN", "PARS_COUNT_TOKEN", + "PARS_DISTINCT_TOKEN", "PARS_FROM_TOKEN", "PARS_WHERE_TOKEN", + "PARS_FOR_TOKEN", "PARS_DDOT_TOKEN", "PARS_READ_TOKEN", + "PARS_ORDER_TOKEN", "PARS_BY_TOKEN", "PARS_ASC_TOKEN", "PARS_DESC_TOKEN", + "PARS_INSERT_TOKEN", "PARS_INTO_TOKEN", "PARS_VALUES_TOKEN", + "PARS_UPDATE_TOKEN", "PARS_SET_TOKEN", "PARS_DELETE_TOKEN", + "PARS_CURRENT_TOKEN", "PARS_OF_TOKEN", "PARS_CREATE_TOKEN", + "PARS_TABLE_TOKEN", "PARS_INDEX_TOKEN", "PARS_UNIQUE_TOKEN", + "PARS_CLUSTERED_TOKEN", "PARS_DOES_NOT_FIT_IN_MEM_TOKEN", + "PARS_ON_TOKEN", "PARS_ASSIGN_TOKEN", "PARS_DECLARE_TOKEN", + "PARS_CURSOR_TOKEN", "PARS_SQL_TOKEN", "PARS_OPEN_TOKEN", + "PARS_FETCH_TOKEN", "PARS_CLOSE_TOKEN", "PARS_NOTFOUND_TOKEN", + "PARS_TO_CHAR_TOKEN", "PARS_TO_NUMBER_TOKEN", "PARS_TO_BINARY_TOKEN", + "PARS_BINARY_TO_NUMBER_TOKEN", "PARS_SUBSTR_TOKEN", "PARS_REPLSTR_TOKEN", + "PARS_CONCAT_TOKEN", "PARS_INSTR_TOKEN", "PARS_LENGTH_TOKEN", + "PARS_SYSDATE_TOKEN", "PARS_PRINTF_TOKEN", "PARS_ASSERT_TOKEN", + "PARS_RND_TOKEN", "PARS_RND_STR_TOKEN", "PARS_ROW_PRINTF_TOKEN", + "PARS_COMMIT_TOKEN", "PARS_ROLLBACK_TOKEN", "PARS_WORK_TOKEN", + "PARS_UNSIGNED_TOKEN", "PARS_EXIT_TOKEN", "PARS_FUNCTION_TOKEN", + "PARS_LOCK_TOKEN", "PARS_SHARE_TOKEN", "PARS_MODE_TOKEN", "'='", "'<'", + "'>'", "'-'", "'+'", "'*'", "'/'", "NEG", "'%'", "';'", "'('", "')'", + "'?'", "','", "'{'", "'}'", "$accept", "top_statement", "statement", + "statement_list", "exp", "function_name", "question_mark_list", + "stored_procedure_call", "predefined_procedure_call", + "predefined_procedure_name", "user_function_call", "table_list", + "variable_list", "exp_list", "select_item", "select_item_list", + "select_list", "search_condition", "for_update_clause", + "lock_shared_clause", "order_direction", "order_by_clause", + "select_statement", "insert_statement_start", "insert_statement", + "column_assignment", "column_assignment_list", "cursor_positioned", + "update_statement_start", "update_statement_searched", + "update_statement_positioned", "delete_statement_start", + "delete_statement_searched", "delete_statement_positioned", + "row_printf_statement", "assignment_statement", "elsif_element", + "elsif_list", "else_part", "if_statement", "while_statement", + "for_statement", "exit_statement", "return_statement", + "open_cursor_statement", "close_cursor_statement", "fetch_statement", + "column_def", "column_def_list", "opt_column_len", "opt_unsigned", + "opt_not_null", "not_fit_in_memory", "create_table", "column_list", + "unique_def", "clustered_def", "create_index", "commit_statement", + "rollback_statement", "type_name", "parameter_declaration", + "parameter_declaration_list", "variable_declaration", + "variable_declaration_list", "cursor_declaration", + "function_declaration", "declaration", "declaration_list", + "procedure_definition", 0 +}; +#endif + +# ifdef YYPRINT +/* YYTOKNUM[YYLEX-NUM] -- Internal token number corresponding to + token YYLEX-NUM. */ +static const unsigned short int yytoknum[] = +{ + 0, 256, 257, 258, 259, 260, 261, 262, 263, 264, + 265, 266, 267, 268, 269, 270, 271, 272, 273, 274, + 275, 276, 277, 278, 279, 280, 281, 282, 283, 284, + 285, 286, 287, 288, 289, 290, 291, 292, 293, 294, + 295, 296, 297, 298, 299, 300, 301, 302, 303, 304, + 305, 306, 307, 308, 309, 310, 311, 312, 313, 314, + 315, 316, 317, 318, 319, 320, 321, 322, 323, 324, + 325, 326, 327, 328, 329, 330, 331, 332, 333, 334, + 335, 336, 337, 338, 339, 340, 341, 342, 343, 344, + 345, 346, 347, 348, 349, 61, 60, 62, 45, 43, + 42, 47, 350, 37, 59, 40, 41, 63, 44, 123, + 125 +}; +# endif + +/* YYR1[YYN] -- Symbol number of symbol that rule YYN derives. */ +static const unsigned char yyr1[] = +{ + 0, 111, 112, 113, 113, 113, 113, 113, 113, 113, + 113, 113, 113, 113, 113, 113, 113, 113, 113, 113, + 113, 113, 113, 113, 113, 114, 114, 115, 115, 115, + 115, 115, 115, 115, 115, 115, 115, 115, 115, 115, + 115, 115, 115, 115, 115, 115, 115, 115, 115, 115, + 115, 115, 115, 116, 116, 116, 116, 116, 116, 116, + 116, 116, 116, 116, 117, 117, 117, 118, 119, 120, + 120, 120, 121, 122, 122, 123, 123, 123, 124, 124, + 124, 125, 125, 125, 125, 126, 126, 126, 127, 127, + 127, 128, 128, 129, 129, 130, 130, 131, 131, 131, + 132, 132, 133, 134, 135, 135, 136, 137, 137, 138, + 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, + 148, 149, 149, 149, 150, 151, 152, 153, 154, 155, + 156, 157, 157, 158, 159, 159, 160, 160, 161, 161, + 162, 162, 163, 163, 164, 165, 165, 166, 166, 167, + 167, 168, 169, 170, 171, 171, 171, 171, 171, 172, + 172, 173, 173, 173, 174, 175, 175, 175, 176, 177, + 178, 178, 179, 179, 179, 180 +}; + +/* YYR2[YYN] -- Number of symbols composing right hand side of rule YYN. */ +static const unsigned char yyr2[] = +{ + 0, 2, 2, 1, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 1, 2, 1, 4, 1, + 1, 1, 1, 1, 1, 1, 3, 3, 3, 3, + 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, + 2, 3, 3, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 0, 1, 3, 6, 4, 1, + 1, 1, 3, 1, 3, 0, 1, 3, 0, 1, + 3, 1, 4, 5, 4, 0, 1, 3, 1, 3, + 1, 0, 2, 0, 2, 0, 4, 0, 1, 1, + 0, 4, 8, 3, 5, 2, 3, 1, 3, 4, + 4, 2, 2, 3, 2, 2, 2, 3, 4, 1, + 2, 0, 2, 1, 7, 6, 10, 1, 1, 2, + 2, 4, 4, 5, 1, 3, 0, 3, 0, 1, + 0, 2, 0, 1, 7, 1, 3, 0, 1, 0, + 1, 10, 2, 2, 1, 1, 1, 1, 1, 3, + 3, 0, 1, 3, 3, 0, 1, 2, 6, 4, + 1, 1, 0, 1, 2, 11 +}; + +/* YYDEFACT[STATE-NAME] -- Default rule to reduce with in state + STATE-NUM when YYTABLE doesn't specify something else to do. Zero + means the default is an error. */ +static const unsigned char yydefact[] = +{ + 0, 0, 0, 0, 0, 1, 2, 161, 0, 162, + 0, 0, 0, 0, 0, 157, 158, 154, 155, 156, + 159, 160, 165, 163, 0, 166, 172, 0, 0, 167, + 170, 171, 173, 0, 164, 0, 0, 0, 174, 0, + 0, 0, 0, 0, 128, 85, 0, 0, 0, 0, + 147, 0, 0, 0, 69, 70, 71, 0, 0, 0, + 127, 0, 25, 0, 3, 0, 0, 0, 0, 0, + 91, 0, 0, 91, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 169, 0, 29, 30, 31, 32, 33, 34, 27, + 0, 35, 53, 54, 55, 56, 57, 58, 59, 60, + 61, 62, 63, 0, 0, 0, 0, 0, 0, 0, + 88, 81, 86, 90, 0, 0, 0, 0, 0, 0, + 148, 149, 129, 0, 130, 116, 152, 153, 0, 175, + 26, 4, 78, 11, 0, 105, 12, 0, 111, 112, + 16, 17, 114, 115, 14, 15, 13, 10, 8, 5, + 6, 7, 9, 18, 20, 19, 23, 24, 21, 22, + 0, 117, 0, 50, 0, 40, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 78, 0, 0, 0, 75, 0, 0, 0, 103, 0, + 113, 0, 150, 0, 75, 64, 79, 0, 78, 0, + 92, 168, 51, 52, 41, 48, 49, 45, 46, 47, + 121, 42, 43, 44, 37, 36, 38, 39, 0, 0, + 0, 0, 0, 76, 89, 87, 73, 91, 0, 0, + 107, 110, 0, 0, 76, 132, 131, 65, 0, 68, + 0, 0, 0, 0, 0, 119, 123, 0, 28, 0, + 84, 0, 82, 0, 0, 0, 93, 0, 0, 0, + 0, 134, 0, 0, 0, 0, 0, 80, 104, 109, + 122, 0, 120, 0, 125, 83, 77, 74, 0, 95, + 0, 106, 108, 136, 142, 0, 0, 72, 67, 66, + 0, 124, 94, 0, 100, 0, 0, 138, 143, 144, + 135, 0, 118, 0, 0, 102, 0, 0, 139, 140, + 0, 0, 0, 0, 137, 0, 133, 145, 0, 96, + 97, 126, 141, 151, 0, 98, 99, 101, 146 +}; + +/* YYDEFGOTO[NTERM-NUM]. */ +static const short int yydefgoto[] = +{ + -1, 2, 62, 63, 206, 116, 248, 64, 65, 66, + 245, 237, 234, 207, 122, 123, 124, 148, 289, 304, + 337, 315, 67, 68, 69, 240, 241, 149, 70, 71, + 72, 73, 74, 75, 76, 77, 255, 256, 257, 78, + 79, 80, 81, 82, 83, 84, 85, 271, 272, 307, + 319, 326, 309, 86, 328, 131, 203, 87, 88, 89, + 20, 9, 10, 25, 26, 30, 31, 32, 33, 3 +}; + +/* YYPACT[STATE-NUM] -- Index in YYTABLE of the portion describing + STATE-NUM. */ +#define YYPACT_NINF -177 +static const short int yypact[] = +{ + 28, 38, 54, -46, -29, -177, -177, 56, 50, -177, + -75, 8, 8, 46, 56, -177, -177, -177, -177, -177, + -177, -177, 63, -177, 8, -177, 2, -26, -51, -177, + -177, -177, -177, -13, -177, 71, 72, 587, -177, 57, + -21, 26, 272, 272, -177, 13, 91, 55, 96, 67, + -22, 99, 100, 103, -177, -177, -177, 75, 29, 35, + -177, 116, -177, 396, -177, 22, 23, 27, -9, 30, + 87, 31, 32, 87, 47, 49, 52, 58, 59, 60, + 61, 62, 65, 66, 74, 77, 78, 86, 89, 102, + 75, -177, 272, -177, -177, -177, -177, -177, -177, 39, + 272, 51, -177, -177, -177, -177, -177, -177, -177, -177, + -177, -177, -177, 272, 272, 361, 25, 489, 45, 90, + -177, 651, -177, -39, 93, 142, 124, 108, 152, 170, + -177, 131, -177, 143, -177, -177, -177, -177, 98, -177, + -177, -177, 272, -177, 110, -177, -177, 256, -177, -177, + -177, -177, -177, -177, -177, -177, -177, -177, -177, -177, + -177, -177, -177, -177, -177, -177, -177, -177, -177, -177, + 112, 651, 137, 101, 147, 204, 88, 272, 272, 272, + 272, 272, 587, 272, 272, 272, 272, 272, 272, 272, + 272, 587, 272, -30, 211, 168, 212, 272, -177, 213, + -177, 118, -177, 167, 217, 122, 651, -63, 272, 175, + 651, -177, -177, -177, -177, 101, 101, 21, 21, 651, + 332, 21, 21, 21, -6, -6, 204, 204, -60, 460, + 198, 222, 126, -177, 125, -177, -177, -33, 584, 140, + -177, 128, 228, 229, 139, -177, 125, -177, -53, -177, + 272, -49, 240, 587, 272, -177, 224, 226, -177, 225, + -177, 150, -177, 258, 272, 260, 230, 272, 272, 213, + 8, -177, -45, 208, 166, 164, 176, 651, -177, -177, + 587, 631, -177, 254, -177, -177, -177, -177, 234, 194, + 638, 651, -177, 182, 227, 228, 280, -177, -177, -177, + 587, -177, -177, 273, 247, 587, 289, 214, -177, -177, + -177, 195, 587, 209, 261, -177, 524, 199, -177, 295, + 292, 215, 299, 279, -177, 304, -177, -177, -44, -177, + -8, -177, -177, -177, 305, -177, -177, -177, -177 +}; + +/* YYPGOTO[NTERM-NUM]. */ +static const short int yypgoto[] = +{ + -177, -177, -62, -176, -40, -177, -177, -177, -177, -177, + -177, -177, 109, -166, 120, -177, -177, -69, -177, -177, + -177, -177, -34, -177, -177, 48, -177, 243, -177, -177, + -177, -177, -177, -177, -177, -177, 64, -177, -177, -177, + -177, -177, -177, -177, -177, -177, -177, 24, -177, -177, + -177, -177, -177, -177, -177, -177, -177, -177, -177, -177, + -12, 307, -177, 297, -177, -177, -177, 285, -177, -177 +}; + +/* YYTABLE[YYPACT[STATE-NUM]]. What to do in state STATE-NUM. If + positive, shift that token. If negative, reduce the rule which + number is the opposite. If zero, do what YYDEFACT says. + If YYTABLE_NINF, syntax error. */ +#define YYTABLE_NINF -1 +static const unsigned short int yytable[] = +{ + 21, 140, 115, 117, 152, 121, 220, 264, 231, 181, + 194, 24, 27, 37, 35, 229, 93, 94, 95, 96, + 97, 98, 99, 135, 228, 100, 45, 15, 16, 17, + 18, 13, 19, 14, 145, 129, 181, 130, 335, 336, + 36, 144, 251, 249, 1, 250, 258, 4, 250, 118, + 119, 28, 171, 275, 5, 276, 170, 278, 6, 250, + 173, 294, 333, 295, 334, 8, 28, 11, 12, 195, + 232, 22, 24, 175, 176, 265, 7, 280, 34, 101, + 39, 40, 90, 91, 102, 103, 104, 105, 106, 92, + 107, 108, 109, 110, 188, 189, 111, 112, 177, 178, + 125, 179, 180, 181, 126, 127, 128, 210, 132, 133, + 45, 113, 134, 120, 179, 180, 181, 136, 114, 186, + 187, 188, 189, 137, 312, 138, 141, 147, 142, 316, + 190, 143, 196, 198, 146, 150, 151, 215, 216, 217, + 218, 219, 172, 221, 222, 223, 224, 225, 226, 227, + 192, 154, 230, 155, 174, 121, 156, 238, 140, 197, + 199, 200, 157, 158, 159, 160, 161, 140, 266, 162, + 163, 93, 94, 95, 96, 97, 98, 99, 164, 201, + 100, 165, 166, 183, 184, 185, 186, 187, 188, 189, + 167, 202, 204, 168, 214, 193, 183, 184, 185, 186, + 187, 188, 189, 205, 118, 119, 169, 212, 177, 178, + 277, 179, 180, 181, 281, 208, 211, 213, 140, 181, + 233, 236, 239, 242, 210, 243, 244, 290, 291, 247, + 252, 261, 262, 263, 101, 268, 269, 270, 273, 102, + 103, 104, 105, 106, 274, 107, 108, 109, 110, 279, + 140, 111, 112, 283, 140, 254, 285, 284, 293, 93, + 94, 95, 96, 97, 98, 99, 113, 286, 100, 287, + 296, 288, 297, 114, 298, 93, 94, 95, 96, 97, + 98, 99, 301, 299, 100, 302, 303, 306, 308, 311, + 313, 314, 317, 183, 184, 185, 186, 187, 188, 189, + 320, 327, 321, 318, 260, 324, 322, 325, 330, 329, + 209, 331, 332, 246, 338, 235, 153, 292, 38, 310, + 282, 23, 101, 29, 0, 0, 0, 102, 103, 104, + 105, 106, 0, 107, 108, 109, 110, 0, 101, 111, + 112, 41, 0, 102, 103, 104, 105, 106, 0, 107, + 108, 109, 110, 0, 113, 111, 112, 0, 0, 0, + 42, 114, 253, 254, 0, 43, 44, 45, 0, 0, + 113, 177, 178, 46, 179, 180, 181, 114, 0, 0, + 47, 0, 0, 48, 0, 49, 0, 0, 50, 0, + 182, 0, 0, 0, 0, 0, 0, 0, 0, 51, + 52, 53, 0, 0, 0, 41, 0, 0, 54, 0, + 0, 0, 0, 55, 56, 0, 0, 57, 58, 59, + 0, 0, 60, 139, 42, 0, 0, 0, 0, 43, + 44, 45, 0, 0, 0, 0, 0, 46, 0, 0, + 0, 61, 0, 0, 47, 0, 0, 48, 0, 49, + 0, 0, 50, 0, 0, 0, 183, 184, 185, 186, + 187, 188, 189, 51, 52, 53, 0, 0, 0, 41, + 0, 0, 54, 0, 0, 0, 0, 55, 56, 0, + 0, 57, 58, 59, 0, 0, 60, 259, 42, 0, + 0, 0, 0, 43, 44, 45, 0, 0, 0, 177, + 178, 46, 179, 180, 181, 61, 0, 0, 47, 0, + 0, 48, 0, 49, 0, 0, 50, 0, 0, 0, + 0, 191, 0, 0, 0, 0, 0, 51, 52, 53, + 0, 0, 0, 41, 0, 0, 54, 0, 0, 0, + 0, 55, 56, 0, 0, 57, 58, 59, 0, 0, + 60, 323, 42, 0, 0, 0, 0, 43, 44, 45, + 0, 0, 0, 0, 0, 46, 0, 0, 0, 61, + 0, 0, 47, 0, 0, 48, 0, 49, 0, 0, + 50, 0, 0, 0, 183, 184, 185, 186, 187, 188, + 189, 51, 52, 53, 177, 178, 41, 179, 180, 181, + 54, 0, 0, 0, 0, 55, 56, 0, 0, 57, + 58, 59, 0, 0, 60, 42, 0, 0, 0, 0, + 43, 44, 45, 0, 0, 0, 267, 0, 46, 0, + 0, 0, 0, 61, 0, 47, 0, 0, 48, 0, + 49, 177, 178, 50, 179, 180, 181, 0, 177, 178, + 0, 179, 180, 181, 51, 52, 53, 0, 0, 0, + 300, 177, 178, 54, 179, 180, 181, 0, 55, 56, + 305, 0, 57, 58, 59, 0, 0, 60, 0, 183, + 184, 185, 186, 187, 188, 189, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 61, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 183, 184, 185, 186, + 187, 188, 189, 183, 184, 185, 186, 187, 188, 189, + 0, 0, 0, 0, 0, 0, 183, 184, 185, 186, + 187, 188, 189 +}; + +static const short int yycheck[] = +{ + 12, 63, 42, 43, 73, 45, 182, 40, 38, 15, + 49, 9, 24, 26, 65, 191, 3, 4, 5, 6, + 7, 8, 9, 57, 190, 12, 35, 19, 20, 21, + 22, 106, 24, 108, 68, 57, 15, 59, 46, 47, + 91, 50, 208, 106, 16, 108, 106, 9, 108, 36, + 37, 64, 92, 106, 0, 108, 90, 106, 104, 108, + 100, 106, 106, 108, 108, 9, 64, 17, 18, 108, + 100, 25, 9, 113, 114, 108, 105, 253, 104, 66, + 9, 9, 25, 104, 71, 72, 73, 74, 75, 63, + 77, 78, 79, 80, 100, 101, 83, 84, 10, 11, + 9, 13, 14, 15, 49, 9, 39, 147, 9, 9, + 35, 98, 9, 100, 13, 14, 15, 88, 105, 98, + 99, 100, 101, 88, 300, 9, 104, 40, 105, 305, + 105, 104, 39, 9, 104, 104, 104, 177, 178, 179, + 180, 181, 103, 183, 184, 185, 186, 187, 188, 189, + 105, 104, 192, 104, 103, 195, 104, 197, 220, 17, + 52, 9, 104, 104, 104, 104, 104, 229, 237, 104, + 104, 3, 4, 5, 6, 7, 8, 9, 104, 9, + 12, 104, 104, 95, 96, 97, 98, 99, 100, 101, + 104, 60, 49, 104, 106, 105, 95, 96, 97, 98, + 99, 100, 101, 105, 36, 37, 104, 70, 10, 11, + 250, 13, 14, 15, 254, 105, 104, 70, 280, 15, + 9, 9, 9, 105, 264, 58, 9, 267, 268, 107, + 55, 9, 106, 108, 66, 95, 108, 9, 9, 71, + 72, 73, 74, 75, 105, 77, 78, 79, 80, 9, + 312, 83, 84, 27, 316, 31, 106, 32, 270, 3, + 4, 5, 6, 7, 8, 9, 98, 9, 12, 9, + 62, 41, 106, 105, 110, 3, 4, 5, 6, 7, + 8, 9, 28, 107, 12, 51, 92, 105, 61, 9, + 17, 44, 3, 95, 96, 97, 98, 99, 100, 101, + 105, 9, 93, 89, 106, 106, 45, 12, 9, 94, + 54, 32, 8, 204, 9, 195, 73, 269, 33, 295, + 256, 14, 66, 26, -1, -1, -1, 71, 72, 73, + 74, 75, -1, 77, 78, 79, 80, -1, 66, 83, + 84, 9, -1, 71, 72, 73, 74, 75, -1, 77, + 78, 79, 80, -1, 98, 83, 84, -1, -1, -1, + 28, 105, 30, 31, -1, 33, 34, 35, -1, -1, + 98, 10, 11, 41, 13, 14, 15, 105, -1, -1, + 48, -1, -1, 51, -1, 53, -1, -1, 56, -1, + 29, -1, -1, -1, -1, -1, -1, -1, -1, 67, + 68, 69, -1, -1, -1, 9, -1, -1, 76, -1, + -1, -1, -1, 81, 82, -1, -1, 85, 86, 87, + -1, -1, 90, 27, 28, -1, -1, -1, -1, 33, + 34, 35, -1, -1, -1, -1, -1, 41, -1, -1, + -1, 109, -1, -1, 48, -1, -1, 51, -1, 53, + -1, -1, 56, -1, -1, -1, 95, 96, 97, 98, + 99, 100, 101, 67, 68, 69, -1, -1, -1, 9, + -1, -1, 76, -1, -1, -1, -1, 81, 82, -1, + -1, 85, 86, 87, -1, -1, 90, 27, 28, -1, + -1, -1, -1, 33, 34, 35, -1, -1, -1, 10, + 11, 41, 13, 14, 15, 109, -1, -1, 48, -1, + -1, 51, -1, 53, -1, -1, 56, -1, -1, -1, + -1, 32, -1, -1, -1, -1, -1, 67, 68, 69, + -1, -1, -1, 9, -1, -1, 76, -1, -1, -1, + -1, 81, 82, -1, -1, 85, 86, 87, -1, -1, + 90, 27, 28, -1, -1, -1, -1, 33, 34, 35, + -1, -1, -1, -1, -1, 41, -1, -1, -1, 109, + -1, -1, 48, -1, -1, 51, -1, 53, -1, -1, + 56, -1, -1, -1, 95, 96, 97, 98, 99, 100, + 101, 67, 68, 69, 10, 11, 9, 13, 14, 15, + 76, -1, -1, -1, -1, 81, 82, -1, -1, 85, + 86, 87, -1, -1, 90, 28, -1, -1, -1, -1, + 33, 34, 35, -1, -1, -1, 42, -1, 41, -1, + -1, -1, -1, 109, -1, 48, -1, -1, 51, -1, + 53, 10, 11, 56, 13, 14, 15, -1, 10, 11, + -1, 13, 14, 15, 67, 68, 69, -1, -1, -1, + 29, 10, 11, 76, 13, 14, 15, -1, 81, 82, + 32, -1, 85, 86, 87, -1, -1, 90, -1, 95, + 96, 97, 98, 99, 100, 101, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, 109, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, 95, 96, 97, 98, + 99, 100, 101, 95, 96, 97, 98, 99, 100, 101, + -1, -1, -1, -1, -1, -1, 95, 96, 97, 98, + 99, 100, 101 +}; + +/* YYSTOS[STATE-NUM] -- The (internal number of the) accessing + symbol of state STATE-NUM. */ +static const unsigned char yystos[] = +{ + 0, 16, 112, 180, 9, 0, 104, 105, 9, 172, + 173, 17, 18, 106, 108, 19, 20, 21, 22, 24, + 171, 171, 25, 172, 9, 174, 175, 171, 64, 174, + 176, 177, 178, 179, 104, 65, 91, 26, 178, 9, + 9, 9, 28, 33, 34, 35, 41, 48, 51, 53, + 56, 67, 68, 69, 76, 81, 82, 85, 86, 87, + 90, 109, 113, 114, 118, 119, 120, 133, 134, 135, + 139, 140, 141, 142, 143, 144, 145, 146, 150, 151, + 152, 153, 154, 155, 156, 157, 164, 168, 169, 170, + 25, 104, 63, 3, 4, 5, 6, 7, 8, 9, + 12, 66, 71, 72, 73, 74, 75, 77, 78, 79, + 80, 83, 84, 98, 105, 115, 116, 115, 36, 37, + 100, 115, 125, 126, 127, 9, 49, 9, 39, 57, + 59, 166, 9, 9, 9, 133, 88, 88, 9, 27, + 113, 104, 105, 104, 50, 133, 104, 40, 128, 138, + 104, 104, 128, 138, 104, 104, 104, 104, 104, 104, + 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, + 133, 115, 103, 115, 103, 115, 115, 10, 11, 13, + 14, 15, 29, 95, 96, 97, 98, 99, 100, 101, + 105, 32, 105, 105, 49, 108, 39, 17, 9, 52, + 9, 9, 60, 167, 49, 105, 115, 124, 105, 54, + 115, 104, 70, 70, 106, 115, 115, 115, 115, 115, + 114, 115, 115, 115, 115, 115, 115, 115, 124, 114, + 115, 38, 100, 9, 123, 125, 9, 122, 115, 9, + 136, 137, 105, 58, 9, 121, 123, 107, 117, 106, + 108, 124, 55, 30, 31, 147, 148, 149, 106, 27, + 106, 9, 106, 108, 40, 108, 128, 42, 95, 108, + 9, 158, 159, 9, 105, 106, 108, 115, 106, 9, + 114, 115, 147, 27, 32, 106, 9, 9, 41, 129, + 115, 115, 136, 171, 106, 108, 62, 106, 110, 107, + 29, 28, 51, 92, 130, 32, 105, 160, 61, 163, + 158, 9, 114, 17, 44, 132, 114, 3, 89, 161, + 105, 93, 45, 27, 106, 12, 162, 9, 165, 94, + 9, 32, 8, 106, 108, 46, 47, 131, 9 +}; + +#if ! defined (YYSIZE_T) && defined (__SIZE_TYPE__) +# define YYSIZE_T __SIZE_TYPE__ +#endif +#if ! defined (YYSIZE_T) && defined (size_t) +# define YYSIZE_T size_t +#endif +#if ! defined (YYSIZE_T) +# if defined (__STDC__) || defined (__cplusplus) +# include <stddef.h> /* INFRINGES ON USER NAME SPACE */ +# define YYSIZE_T size_t +# endif +#endif +#if ! defined (YYSIZE_T) +# define YYSIZE_T unsigned int +#endif + +#define yyerrok (yyerrstatus = 0) +#define yyclearin (yychar = YYEMPTY) +#define YYEMPTY (-2) +#define YYEOF 0 + +#define YYACCEPT goto yyacceptlab +#define YYABORT goto yyabortlab +#define YYERROR goto yyerrorlab + + +/* Like YYERROR except do call yyerror. This remains here temporarily + to ease the transition to the new meaning of YYERROR, for GCC. + Once GCC version 2 has supplanted version 1, this can go. */ + +#define YYFAIL goto yyerrlab + +#define YYRECOVERING() (!!yyerrstatus) + +#define YYBACKUP(Token, Value) \ +do \ + if (yychar == YYEMPTY && yylen == 1) \ + { \ + yychar = (Token); \ + yylval = (Value); \ + yytoken = YYTRANSLATE (yychar); \ + YYPOPSTACK; \ + goto yybackup; \ + } \ + else \ + { \ + yyerror ("syntax error: cannot back up");\ + YYERROR; \ + } \ +while (0) + + +#define YYTERROR 1 +#define YYERRCODE 256 + + +/* YYLLOC_DEFAULT -- Set CURRENT to span from RHS[1] to RHS[N]. + If N is 0, then set CURRENT to the empty location which ends + the previous symbol: RHS[0] (always defined). */ + +#define YYRHSLOC(Rhs, K) ((Rhs)[K]) +#ifndef YYLLOC_DEFAULT +# define YYLLOC_DEFAULT(Current, Rhs, N) \ + do \ + if (N) \ + { \ + (Current).first_line = YYRHSLOC (Rhs, 1).first_line; \ + (Current).first_column = YYRHSLOC (Rhs, 1).first_column; \ + (Current).last_line = YYRHSLOC (Rhs, N).last_line; \ + (Current).last_column = YYRHSLOC (Rhs, N).last_column; \ + } \ + else \ + { \ + (Current).first_line = (Current).last_line = \ + YYRHSLOC (Rhs, 0).last_line; \ + (Current).first_column = (Current).last_column = \ + YYRHSLOC (Rhs, 0).last_column; \ + } \ + while (0) +#endif + + +/* YY_LOCATION_PRINT -- Print the location on the stream. + This macro was not mandated originally: define only if we know + we won't break user code: when these are the locations we know. */ + +#ifndef YY_LOCATION_PRINT +# if YYLTYPE_IS_TRIVIAL +# define YY_LOCATION_PRINT(File, Loc) \ + fprintf (File, "%d.%d-%d.%d", \ + (Loc).first_line, (Loc).first_column, \ + (Loc).last_line, (Loc).last_column) +# else +# define YY_LOCATION_PRINT(File, Loc) ((void) 0) +# endif +#endif + + +/* YYLEX -- calling `yylex' with the right arguments. */ + +#ifdef YYLEX_PARAM +# define YYLEX yylex (YYLEX_PARAM) +#else +# define YYLEX yylex () +#endif + +/* Enable debugging if requested. */ +#if YYDEBUG + +# ifndef YYFPRINTF +# include <stdio.h> /* INFRINGES ON USER NAME SPACE */ +# define YYFPRINTF fprintf +# endif + +# define YYDPRINTF(Args) \ +do { \ + if (yydebug) \ + YYFPRINTF Args; \ +} while (0) + +# define YY_SYMBOL_PRINT(Title, Type, Value, Location) \ +do { \ + if (yydebug) \ + { \ + YYFPRINTF (stderr, "%s ", Title); \ + yysymprint (stderr, \ + Type, Value); \ + YYFPRINTF (stderr, "\n"); \ + } \ +} while (0) + +/*------------------------------------------------------------------. +| yy_stack_print -- Print the state stack from its BOTTOM up to its | +| TOP (included). | +`------------------------------------------------------------------*/ + +#if defined (__STDC__) || defined (__cplusplus) +static void +yy_stack_print (short int *bottom, short int *top) +#else +static void +yy_stack_print (bottom, top) + short int *bottom; + short int *top; +#endif +{ + YYFPRINTF (stderr, "Stack now"); + for (/* Nothing. */; bottom <= top; ++bottom) + YYFPRINTF (stderr, " %d", *bottom); + YYFPRINTF (stderr, "\n"); +} + +# define YY_STACK_PRINT(Bottom, Top) \ +do { \ + if (yydebug) \ + yy_stack_print ((Bottom), (Top)); \ +} while (0) + + +/*------------------------------------------------. +| Report that the YYRULE is going to be reduced. | +`------------------------------------------------*/ + +#if defined (__STDC__) || defined (__cplusplus) +static void +yy_reduce_print (int yyrule) +#else +static void +yy_reduce_print (yyrule) + int yyrule; +#endif +{ + int yyi; + unsigned int yylno = yyrline[yyrule]; + YYFPRINTF (stderr, "Reducing stack by rule %d (line %u), ", + yyrule - 1, yylno); + /* Print the symbols being reduced, and their result. */ + for (yyi = yyprhs[yyrule]; 0 <= yyrhs[yyi]; yyi++) + YYFPRINTF (stderr, "%s ", yytname [yyrhs[yyi]]); + YYFPRINTF (stderr, "-> %s\n", yytname [yyr1[yyrule]]); +} + +# define YY_REDUCE_PRINT(Rule) \ +do { \ + if (yydebug) \ + yy_reduce_print (Rule); \ +} while (0) + +/* Nonzero means print parse trace. It is left uninitialized so that + multiple parsers can coexist. */ +int yydebug; +#else /* !YYDEBUG */ +# define YYDPRINTF(Args) +# define YY_SYMBOL_PRINT(Title, Type, Value, Location) +# define YY_STACK_PRINT(Bottom, Top) +# define YY_REDUCE_PRINT(Rule) +#endif /* !YYDEBUG */ + + +/* YYINITDEPTH -- initial size of the parser's stacks. */ +#ifndef YYINITDEPTH +# define YYINITDEPTH 200 +#endif + +/* YYMAXDEPTH -- maximum size the stacks can grow to (effective only + if the built-in stack extension method is used). + + Do not make this value too large; the results are undefined if + SIZE_MAX < YYSTACK_BYTES (YYMAXDEPTH) + evaluated with infinite-precision integer arithmetic. */ + +#ifndef YYMAXDEPTH +# define YYMAXDEPTH 10000 +#endif + + + +#if YYERROR_VERBOSE + +# ifndef yystrlen +# if defined (__GLIBC__) && defined (_STRING_H) +# define yystrlen strlen +# else +/* Return the length of YYSTR. */ +static YYSIZE_T +# if defined (__STDC__) || defined (__cplusplus) +yystrlen (const char *yystr) +# else +yystrlen (yystr) + const char *yystr; +# endif +{ + register const char *yys = yystr; + + while (*yys++ != '\0') + continue; + + return yys - yystr - 1; +} +# endif +# endif + +# ifndef yystpcpy +# if defined (__GLIBC__) && defined (_STRING_H) && defined (_GNU_SOURCE) +# define yystpcpy stpcpy +# else +/* Copy YYSRC to YYDEST, returning the address of the terminating '\0' in + YYDEST. */ +static char * +# if defined (__STDC__) || defined (__cplusplus) +yystpcpy (char *yydest, const char *yysrc) +# else +yystpcpy (yydest, yysrc) + char *yydest; + const char *yysrc; +# endif +{ + register char *yyd = yydest; + register const char *yys = yysrc; + + while ((*yyd++ = *yys++) != '\0') + continue; + + return yyd - 1; +} +# endif +# endif + +#endif /* !YYERROR_VERBOSE */ + + + +#if YYDEBUG +/*--------------------------------. +| Print this symbol on YYOUTPUT. | +`--------------------------------*/ + +#if defined (__STDC__) || defined (__cplusplus) +static void +yysymprint (FILE *yyoutput, int yytype, YYSTYPE *yyvaluep) +#else +static void +yysymprint (yyoutput, yytype, yyvaluep) + FILE *yyoutput; + int yytype; + YYSTYPE *yyvaluep; +#endif +{ + /* Pacify ``unused variable'' warnings. */ + (void) yyvaluep; + + if (yytype < YYNTOKENS) + YYFPRINTF (yyoutput, "token %s (", yytname[yytype]); + else + YYFPRINTF (yyoutput, "nterm %s (", yytname[yytype]); + + +# ifdef YYPRINT + if (yytype < YYNTOKENS) + YYPRINT (yyoutput, yytoknum[yytype], *yyvaluep); +# endif + switch (yytype) + { + default: + break; + } + YYFPRINTF (yyoutput, ")"); +} + +#endif /* ! YYDEBUG */ +/*-----------------------------------------------. +| Release the memory associated to this symbol. | +`-----------------------------------------------*/ + +#if defined (__STDC__) || defined (__cplusplus) +static void +yydestruct (const char *yymsg, int yytype, YYSTYPE *yyvaluep) +#else +static void +yydestruct (yymsg, yytype, yyvaluep) + const char *yymsg; + int yytype; + YYSTYPE *yyvaluep; +#endif +{ + /* Pacify ``unused variable'' warnings. */ + (void) yyvaluep; + + if (!yymsg) + yymsg = "Deleting"; + YY_SYMBOL_PRINT (yymsg, yytype, yyvaluep, yylocationp); + + switch (yytype) + { + + default: + break; + } +} + + +/* Prevent warnings from -Wmissing-prototypes. */ + +#ifdef YYPARSE_PARAM +# if defined (__STDC__) || defined (__cplusplus) +UNIV_INTERN int yyparse (void *YYPARSE_PARAM); +# else +UNIV_INTERN int yyparse (); +# endif +#else /* ! YYPARSE_PARAM */ +#if defined (__STDC__) || defined (__cplusplus) +UNIV_INTERN int yyparse (void); +#else +UNIV_INTERN int yyparse (); +#endif +#endif /* ! YYPARSE_PARAM */ + + + +/* The look-ahead symbol. */ +static int yychar; + +/* The semantic value of the look-ahead symbol. */ +UNIV_INTERN YYSTYPE yylval; + +/* Number of syntax errors so far. */ +static int yynerrs; + + + +/*----------. +| yyparse. | +`----------*/ + +#ifdef YYPARSE_PARAM +# if defined (__STDC__) || defined (__cplusplus) +UNIV_INTERN int yyparse (void *YYPARSE_PARAM) +# else +UNIV_INTERN int yyparse (YYPARSE_PARAM) + void *YYPARSE_PARAM; +# endif +#else /* ! YYPARSE_PARAM */ +#if defined (__STDC__) || defined (__cplusplus) +int +yyparse (void) +#else +int +yyparse () + +#endif +#endif +{ + + register int yystate; + register int yyn; + int yyresult; + /* Number of tokens to shift before error messages enabled. */ + int yyerrstatus; + /* Look-ahead token as an internal (translated) token number. */ + int yytoken = 0; + + /* Three stacks and their tools: + `yyss': related to states, + `yyvs': related to semantic values, + `yyls': related to locations. + + Refer to the stacks thru separate pointers, to allow yyoverflow + to reallocate them elsewhere. */ + + /* The state stack. */ + short int yyssa[YYINITDEPTH]; + short int *yyss = yyssa; + register short int *yyssp; + + /* The semantic value stack. */ + YYSTYPE yyvsa[YYINITDEPTH]; + YYSTYPE *yyvs = yyvsa; + register YYSTYPE *yyvsp; + + + +#define YYPOPSTACK (yyvsp--, yyssp--) + + YYSIZE_T yystacksize = YYINITDEPTH; + + /* The variables used to return semantic value and location from the + action routines. */ + YYSTYPE yyval; + + + /* When reducing, the number of symbols on the RHS of the reduced + rule. */ + int yylen; + + YYDPRINTF ((stderr, "Starting parse\n")); + + yystate = 0; + yyerrstatus = 0; + yynerrs = 0; + yychar = YYEMPTY; /* Cause a token to be read. */ + + /* Initialize stack pointers. + Waste one element of value and location stack + so that they stay on the same level as the state stack. + The wasted elements are never initialized. */ + + yyssp = yyss; + yyvsp = yyvs; + + + yyvsp[0] = yylval; + + goto yysetstate; + +/*------------------------------------------------------------. +| yynewstate -- Push a new state, which is found in yystate. | +`------------------------------------------------------------*/ + yynewstate: + /* In all cases, when you get here, the value and location stacks + have just been pushed. so pushing a state here evens the stacks. + */ + yyssp++; + + yysetstate: + *yyssp = yystate; + + if (yyss + yystacksize - 1 <= yyssp) + { + /* Get the current used size of the three stacks, in elements. */ + YYSIZE_T yysize = yyssp - yyss + 1; + +#ifdef yyoverflow + { + /* Give user a chance to reallocate the stack. Use copies of + these so that the &'s don't force the real ones into + memory. */ + YYSTYPE *yyvs1 = yyvs; + short int *yyss1 = yyss; + + + /* Each stack pointer address is followed by the size of the + data in use in that stack, in bytes. This used to be a + conditional around just the two extra args, but that might + be undefined if yyoverflow is a macro. */ + yyoverflow ("parser stack overflow", + &yyss1, yysize * sizeof (*yyssp), + &yyvs1, yysize * sizeof (*yyvsp), + + &yystacksize); + + yyss = yyss1; + yyvs = yyvs1; + } +#else /* no yyoverflow */ +# ifndef YYSTACK_RELOCATE + goto yyoverflowlab; +# else + /* Extend the stack our own way. */ + if (YYMAXDEPTH <= yystacksize) + goto yyoverflowlab; + yystacksize *= 2; + if (YYMAXDEPTH < yystacksize) + yystacksize = YYMAXDEPTH; + + { + short int *yyss1 = yyss; + union yyalloc *yyptr = + (union yyalloc *) YYSTACK_ALLOC (YYSTACK_BYTES (yystacksize)); + if (! yyptr) + goto yyoverflowlab; + YYSTACK_RELOCATE (yyss); + YYSTACK_RELOCATE (yyvs); + +# undef YYSTACK_RELOCATE + if (yyss1 != yyssa) + YYSTACK_FREE (yyss1); + } +# endif +#endif /* no yyoverflow */ + + yyssp = yyss + yysize - 1; + yyvsp = yyvs + yysize - 1; + + + YYDPRINTF ((stderr, "Stack size increased to %lu\n", + (unsigned long int) yystacksize)); + + if (yyss + yystacksize - 1 <= yyssp) + YYABORT; + } + + YYDPRINTF ((stderr, "Entering state %d\n", yystate)); + + goto yybackup; + +/*-----------. +| yybackup. | +`-----------*/ +yybackup: + +/* Do appropriate processing given the current state. */ +/* Read a look-ahead token if we need one and don't already have one. */ +/* yyresume: */ + + /* First try to decide what to do without reference to look-ahead token. */ + + yyn = yypact[yystate]; + if (yyn == YYPACT_NINF) + goto yydefault; + + /* Not known => get a look-ahead token if don't already have one. */ + + /* YYCHAR is either YYEMPTY or YYEOF or a valid look-ahead symbol. */ + if (yychar == YYEMPTY) + { + YYDPRINTF ((stderr, "Reading a token: ")); + yychar = YYLEX; + } + + if (yychar <= YYEOF) + { + yychar = yytoken = YYEOF; + YYDPRINTF ((stderr, "Now at end of input.\n")); + } + else + { + yytoken = YYTRANSLATE (yychar); + YY_SYMBOL_PRINT ("Next token is", yytoken, &yylval, &yylloc); + } + + /* If the proper action on seeing token YYTOKEN is to reduce or to + detect an error, take that action. */ + yyn += yytoken; + if (yyn < 0 || YYLAST < yyn || yycheck[yyn] != yytoken) + goto yydefault; + yyn = yytable[yyn]; + if (yyn <= 0) + { + if (yyn == 0 || yyn == YYTABLE_NINF) + goto yyerrlab; + yyn = -yyn; + goto yyreduce; + } + + if (yyn == YYFINAL) + YYACCEPT; + + /* Shift the look-ahead token. */ + YY_SYMBOL_PRINT ("Shifting", yytoken, &yylval, &yylloc); + + /* Discard the token being shifted unless it is eof. */ + if (yychar != YYEOF) + yychar = YYEMPTY; + + *++yyvsp = yylval; + + + /* Count tokens shifted since error; after three, turn off error + status. */ + if (yyerrstatus) + yyerrstatus--; + + yystate = yyn; + goto yynewstate; + + +/*-----------------------------------------------------------. +| yydefault -- do the default action for the current state. | +`-----------------------------------------------------------*/ +yydefault: + yyn = yydefact[yystate]; + if (yyn == 0) + goto yyerrlab; + goto yyreduce; + + +/*-----------------------------. +| yyreduce -- Do a reduction. | +`-----------------------------*/ +yyreduce: + /* yyn is the number of a rule to reduce with. */ + yylen = yyr2[yyn]; + + /* If YYLEN is nonzero, implement the default value of the action: + `$$ = $1'. + + Otherwise, the following line sets YYVAL to garbage. + This behavior is undocumented and Bison + users should not rely upon it. Assigning to YYVAL + unconditionally makes the parser a bit smaller, and it avoids a + GCC warning that YYVAL may be used uninitialized. */ + yyval = yyvsp[1-yylen]; + + + YY_REDUCE_PRINT (yyn); + switch (yyn) + { + case 25: +#line 166 "pars0grm.y" + { (yyval) = que_node_list_add_last(NULL, (yyvsp[0])); ;} + break; + + case 26: +#line 168 "pars0grm.y" + { (yyval) = que_node_list_add_last((yyvsp[-1]), (yyvsp[0])); ;} + break; + + case 27: +#line 172 "pars0grm.y" + { (yyval) = (yyvsp[0]);;} + break; + + case 28: +#line 174 "pars0grm.y" + { (yyval) = pars_func((yyvsp[-3]), (yyvsp[-1])); ;} + break; + + case 29: +#line 175 "pars0grm.y" + { (yyval) = (yyvsp[0]);;} + break; + + case 30: +#line 176 "pars0grm.y" + { (yyval) = (yyvsp[0]);;} + break; + + case 31: +#line 177 "pars0grm.y" + { (yyval) = (yyvsp[0]);;} + break; + + case 32: +#line 178 "pars0grm.y" + { (yyval) = (yyvsp[0]);;} + break; + + case 33: +#line 179 "pars0grm.y" + { (yyval) = (yyvsp[0]);;} + break; + + case 34: +#line 180 "pars0grm.y" + { (yyval) = (yyvsp[0]);;} + break; + + case 35: +#line 181 "pars0grm.y" + { (yyval) = (yyvsp[0]);;} + break; + + case 36: +#line 182 "pars0grm.y" + { (yyval) = pars_op('+', (yyvsp[-2]), (yyvsp[0])); ;} + break; + + case 37: +#line 183 "pars0grm.y" + { (yyval) = pars_op('-', (yyvsp[-2]), (yyvsp[0])); ;} + break; + + case 38: +#line 184 "pars0grm.y" + { (yyval) = pars_op('*', (yyvsp[-2]), (yyvsp[0])); ;} + break; + + case 39: +#line 185 "pars0grm.y" + { (yyval) = pars_op('/', (yyvsp[-2]), (yyvsp[0])); ;} + break; + + case 40: +#line 186 "pars0grm.y" + { (yyval) = pars_op('-', (yyvsp[0]), NULL); ;} + break; + + case 41: +#line 187 "pars0grm.y" + { (yyval) = (yyvsp[-1]); ;} + break; + + case 42: +#line 188 "pars0grm.y" + { (yyval) = pars_op('=', (yyvsp[-2]), (yyvsp[0])); ;} + break; + + case 43: +#line 189 "pars0grm.y" + { (yyval) = pars_op('<', (yyvsp[-2]), (yyvsp[0])); ;} + break; + + case 44: +#line 190 "pars0grm.y" + { (yyval) = pars_op('>', (yyvsp[-2]), (yyvsp[0])); ;} + break; + + case 45: +#line 191 "pars0grm.y" + { (yyval) = pars_op(PARS_GE_TOKEN, (yyvsp[-2]), (yyvsp[0])); ;} + break; + + case 46: +#line 192 "pars0grm.y" + { (yyval) = pars_op(PARS_LE_TOKEN, (yyvsp[-2]), (yyvsp[0])); ;} + break; + + case 47: +#line 193 "pars0grm.y" + { (yyval) = pars_op(PARS_NE_TOKEN, (yyvsp[-2]), (yyvsp[0])); ;} + break; + + case 48: +#line 194 "pars0grm.y" + { (yyval) = pars_op(PARS_AND_TOKEN, (yyvsp[-2]), (yyvsp[0])); ;} + break; + + case 49: +#line 195 "pars0grm.y" + { (yyval) = pars_op(PARS_OR_TOKEN, (yyvsp[-2]), (yyvsp[0])); ;} + break; + + case 50: +#line 196 "pars0grm.y" + { (yyval) = pars_op(PARS_NOT_TOKEN, (yyvsp[0]), NULL); ;} + break; + + case 51: +#line 198 "pars0grm.y" + { (yyval) = pars_op(PARS_NOTFOUND_TOKEN, (yyvsp[-2]), NULL); ;} + break; + + case 52: +#line 200 "pars0grm.y" + { (yyval) = pars_op(PARS_NOTFOUND_TOKEN, (yyvsp[-2]), NULL); ;} + break; + + case 53: +#line 204 "pars0grm.y" + { (yyval) = &pars_to_char_token; ;} + break; + + case 54: +#line 205 "pars0grm.y" + { (yyval) = &pars_to_number_token; ;} + break; + + case 55: +#line 206 "pars0grm.y" + { (yyval) = &pars_to_binary_token; ;} + break; + + case 56: +#line 208 "pars0grm.y" + { (yyval) = &pars_binary_to_number_token; ;} + break; + + case 57: +#line 209 "pars0grm.y" + { (yyval) = &pars_substr_token; ;} + break; + + case 58: +#line 210 "pars0grm.y" + { (yyval) = &pars_concat_token; ;} + break; + + case 59: +#line 211 "pars0grm.y" + { (yyval) = &pars_instr_token; ;} + break; + + case 60: +#line 212 "pars0grm.y" + { (yyval) = &pars_length_token; ;} + break; + + case 61: +#line 213 "pars0grm.y" + { (yyval) = &pars_sysdate_token; ;} + break; + + case 62: +#line 214 "pars0grm.y" + { (yyval) = &pars_rnd_token; ;} + break; + + case 63: +#line 215 "pars0grm.y" + { (yyval) = &pars_rnd_str_token; ;} + break; + + case 67: +#line 226 "pars0grm.y" + { (yyval) = pars_stored_procedure_call((yyvsp[-4])); ;} + break; + + case 68: +#line 231 "pars0grm.y" + { (yyval) = pars_procedure_call((yyvsp[-3]), (yyvsp[-1])); ;} + break; + + case 69: +#line 235 "pars0grm.y" + { (yyval) = &pars_replstr_token; ;} + break; + + case 70: +#line 236 "pars0grm.y" + { (yyval) = &pars_printf_token; ;} + break; + + case 71: +#line 237 "pars0grm.y" + { (yyval) = &pars_assert_token; ;} + break; + + case 72: +#line 241 "pars0grm.y" + { (yyval) = (yyvsp[-2]); ;} + break; + + case 73: +#line 245 "pars0grm.y" + { (yyval) = que_node_list_add_last(NULL, (yyvsp[0])); ;} + break; + + case 74: +#line 247 "pars0grm.y" + { (yyval) = que_node_list_add_last((yyvsp[-2]), (yyvsp[0])); ;} + break; + + case 75: +#line 251 "pars0grm.y" + { (yyval) = NULL; ;} + break; + + case 76: +#line 252 "pars0grm.y" + { (yyval) = que_node_list_add_last(NULL, (yyvsp[0])); ;} + break; + + case 77: +#line 254 "pars0grm.y" + { (yyval) = que_node_list_add_last((yyvsp[-2]), (yyvsp[0])); ;} + break; + + case 78: +#line 258 "pars0grm.y" + { (yyval) = NULL; ;} + break; + + case 79: +#line 259 "pars0grm.y" + { (yyval) = que_node_list_add_last(NULL, (yyvsp[0]));;} + break; + + case 80: +#line 260 "pars0grm.y" + { (yyval) = que_node_list_add_last((yyvsp[-2]), (yyvsp[0])); ;} + break; + + case 81: +#line 264 "pars0grm.y" + { (yyval) = (yyvsp[0]); ;} + break; + + case 82: +#line 266 "pars0grm.y" + { (yyval) = pars_func(&pars_count_token, + que_node_list_add_last(NULL, + sym_tab_add_int_lit( + pars_sym_tab_global, 1))); ;} + break; + + case 83: +#line 271 "pars0grm.y" + { (yyval) = pars_func(&pars_count_token, + que_node_list_add_last(NULL, + pars_func(&pars_distinct_token, + que_node_list_add_last( + NULL, (yyvsp[-1]))))); ;} + break; + + case 84: +#line 277 "pars0grm.y" + { (yyval) = pars_func(&pars_sum_token, + que_node_list_add_last(NULL, + (yyvsp[-1]))); ;} + break; + + case 85: +#line 283 "pars0grm.y" + { (yyval) = NULL; ;} + break; + + case 86: +#line 284 "pars0grm.y" + { (yyval) = que_node_list_add_last(NULL, (yyvsp[0])); ;} + break; + + case 87: +#line 286 "pars0grm.y" + { (yyval) = que_node_list_add_last((yyvsp[-2]), (yyvsp[0])); ;} + break; + + case 88: +#line 290 "pars0grm.y" + { (yyval) = pars_select_list(&pars_star_denoter, + NULL); ;} + break; + + case 89: +#line 293 "pars0grm.y" + { (yyval) = pars_select_list((yyvsp[-2]), (yyvsp[0])); ;} + break; + + case 90: +#line 294 "pars0grm.y" + { (yyval) = pars_select_list((yyvsp[0]), NULL); ;} + break; + + case 91: +#line 298 "pars0grm.y" + { (yyval) = NULL; ;} + break; + + case 92: +#line 299 "pars0grm.y" + { (yyval) = (yyvsp[0]); ;} + break; + + case 93: +#line 303 "pars0grm.y" + { (yyval) = NULL; ;} + break; + + case 94: +#line 305 "pars0grm.y" + { (yyval) = &pars_update_token; ;} + break; + + case 95: +#line 309 "pars0grm.y" + { (yyval) = NULL; ;} + break; + + case 96: +#line 311 "pars0grm.y" + { yyval = &pars_share_token; ;} + break; + + case 97: +#line 315 "pars0grm.y" + { (yyval) = &pars_asc_token; ;} + break; + + case 98: +#line 316 "pars0grm.y" + { (yyval) = &pars_asc_token; ;} + break; + + case 99: +#line 317 "pars0grm.y" + { (yyval) = &pars_desc_token; ;} + break; + + case 100: +#line 321 "pars0grm.y" + { (yyval) = NULL; ;} + break; + + case 101: +#line 323 "pars0grm.y" + { (yyval) = pars_order_by((yyvsp[-1]), (yyvsp[0])); ;} + break; + + case 102: +#line 332 "pars0grm.y" + { (yyval) = pars_select_statement((yyvsp[-6]), (yyvsp[-4]), (yyvsp[-3]), + (yyvsp[-2]), (yyvsp[-1]), (yyvsp[0])); ;} + break; + + case 103: +#line 338 "pars0grm.y" + { (yyval) = (yyvsp[0]); ;} + break; + + case 104: +#line 343 "pars0grm.y" + { (yyval) = pars_insert_statement((yyvsp[-4]), (yyvsp[-1]), NULL); ;} + break; + + case 105: +#line 345 "pars0grm.y" + { (yyval) = pars_insert_statement((yyvsp[-1]), NULL, (yyvsp[0])); ;} + break; + + case 106: +#line 349 "pars0grm.y" + { (yyval) = pars_column_assignment((yyvsp[-2]), (yyvsp[0])); ;} + break; + + case 107: +#line 353 "pars0grm.y" + { (yyval) = que_node_list_add_last(NULL, (yyvsp[0])); ;} + break; + + case 108: +#line 355 "pars0grm.y" + { (yyval) = que_node_list_add_last((yyvsp[-2]), (yyvsp[0])); ;} + break; + + case 109: +#line 361 "pars0grm.y" + { (yyval) = (yyvsp[0]); ;} + break; + + case 110: +#line 367 "pars0grm.y" + { (yyval) = pars_update_statement_start(FALSE, + (yyvsp[-2]), (yyvsp[0])); ;} + break; + + case 111: +#line 373 "pars0grm.y" + { (yyval) = pars_update_statement((yyvsp[-1]), NULL, (yyvsp[0])); ;} + break; + + case 112: +#line 378 "pars0grm.y" + { (yyval) = pars_update_statement((yyvsp[-1]), (yyvsp[0]), NULL); ;} + break; + + case 113: +#line 383 "pars0grm.y" + { (yyval) = pars_update_statement_start(TRUE, + (yyvsp[0]), NULL); ;} + break; + + case 114: +#line 389 "pars0grm.y" + { (yyval) = pars_update_statement((yyvsp[-1]), NULL, (yyvsp[0])); ;} + break; + + case 115: +#line 394 "pars0grm.y" + { (yyval) = pars_update_statement((yyvsp[-1]), (yyvsp[0]), NULL); ;} + break; + + case 116: +#line 399 "pars0grm.y" + { (yyval) = pars_row_printf_statement((yyvsp[0])); ;} + break; + + case 117: +#line 404 "pars0grm.y" + { (yyval) = pars_assignment_statement((yyvsp[-2]), (yyvsp[0])); ;} + break; + + case 118: +#line 410 "pars0grm.y" + { (yyval) = pars_elsif_element((yyvsp[-2]), (yyvsp[0])); ;} + break; + + case 119: +#line 414 "pars0grm.y" + { (yyval) = que_node_list_add_last(NULL, (yyvsp[0])); ;} + break; + + case 120: +#line 416 "pars0grm.y" + { (yyval) = que_node_list_add_last((yyvsp[-1]), (yyvsp[0])); ;} + break; + + case 121: +#line 420 "pars0grm.y" + { (yyval) = NULL; ;} + break; + + case 122: +#line 422 "pars0grm.y" + { (yyval) = (yyvsp[0]); ;} + break; + + case 123: +#line 423 "pars0grm.y" + { (yyval) = (yyvsp[0]); ;} + break; + + case 124: +#line 430 "pars0grm.y" + { (yyval) = pars_if_statement((yyvsp[-5]), (yyvsp[-3]), (yyvsp[-2])); ;} + break; + + case 125: +#line 436 "pars0grm.y" + { (yyval) = pars_while_statement((yyvsp[-4]), (yyvsp[-2])); ;} + break; + + case 126: +#line 444 "pars0grm.y" + { (yyval) = pars_for_statement((yyvsp[-8]), (yyvsp[-6]), (yyvsp[-4]), (yyvsp[-2])); ;} + break; + + case 127: +#line 448 "pars0grm.y" + { (yyval) = pars_exit_statement(); ;} + break; + + case 128: +#line 452 "pars0grm.y" + { (yyval) = pars_return_statement(); ;} + break; + + case 129: +#line 457 "pars0grm.y" + { (yyval) = pars_open_statement( + ROW_SEL_OPEN_CURSOR, (yyvsp[0])); ;} + break; + + case 130: +#line 463 "pars0grm.y" + { (yyval) = pars_open_statement( + ROW_SEL_CLOSE_CURSOR, (yyvsp[0])); ;} + break; + + case 131: +#line 469 "pars0grm.y" + { (yyval) = pars_fetch_statement((yyvsp[-2]), (yyvsp[0]), NULL); ;} + break; + + case 132: +#line 471 "pars0grm.y" + { (yyval) = pars_fetch_statement((yyvsp[-2]), NULL, (yyvsp[0])); ;} + break; + + case 133: +#line 476 "pars0grm.y" + { (yyval) = pars_column_def((yyvsp[-4]), (yyvsp[-3]), (yyvsp[-2]), (yyvsp[-1]), (yyvsp[0])); ;} + break; + + case 134: +#line 480 "pars0grm.y" + { (yyval) = que_node_list_add_last(NULL, (yyvsp[0])); ;} + break; + + case 135: +#line 482 "pars0grm.y" + { (yyval) = que_node_list_add_last((yyvsp[-2]), (yyvsp[0])); ;} + break; + + case 136: +#line 486 "pars0grm.y" + { (yyval) = NULL; ;} + break; + + case 137: +#line 488 "pars0grm.y" + { (yyval) = (yyvsp[-1]); ;} + break; + + case 138: +#line 492 "pars0grm.y" + { (yyval) = NULL; ;} + break; + + case 139: +#line 494 "pars0grm.y" + { (yyval) = &pars_int_token; + /* pass any non-NULL pointer */ ;} + break; + + case 140: +#line 499 "pars0grm.y" + { (yyval) = NULL; ;} + break; + + case 141: +#line 501 "pars0grm.y" + { (yyval) = &pars_int_token; + /* pass any non-NULL pointer */ ;} + break; + + case 142: +#line 506 "pars0grm.y" + { (yyval) = NULL; ;} + break; + + case 143: +#line 508 "pars0grm.y" + { (yyval) = &pars_int_token; + /* pass any non-NULL pointer */ ;} + break; + + case 144: +#line 515 "pars0grm.y" + { (yyval) = pars_create_table((yyvsp[-4]), (yyvsp[-2]), (yyvsp[0])); ;} + break; + + case 145: +#line 519 "pars0grm.y" + { (yyval) = que_node_list_add_last(NULL, (yyvsp[0])); ;} + break; + + case 146: +#line 521 "pars0grm.y" + { (yyval) = que_node_list_add_last((yyvsp[-2]), (yyvsp[0])); ;} + break; + + case 147: +#line 525 "pars0grm.y" + { (yyval) = NULL; ;} + break; + + case 148: +#line 526 "pars0grm.y" + { (yyval) = &pars_unique_token; ;} + break; + + case 149: +#line 530 "pars0grm.y" + { (yyval) = NULL; ;} + break; + + case 150: +#line 531 "pars0grm.y" + { (yyval) = &pars_clustered_token; ;} + break; + + case 151: +#line 539 "pars0grm.y" + { (yyval) = pars_create_index((yyvsp[-8]), (yyvsp[-7]), (yyvsp[-5]), (yyvsp[-3]), (yyvsp[-1])); ;} + break; + + case 152: +#line 544 "pars0grm.y" + { (yyval) = pars_commit_statement(); ;} + break; + + case 153: +#line 549 "pars0grm.y" + { (yyval) = pars_rollback_statement(); ;} + break; + + case 154: +#line 553 "pars0grm.y" + { (yyval) = &pars_int_token; ;} + break; + + case 155: +#line 554 "pars0grm.y" + { (yyval) = &pars_int_token; ;} + break; + + case 156: +#line 555 "pars0grm.y" + { (yyval) = &pars_char_token; ;} + break; + + case 157: +#line 556 "pars0grm.y" + { (yyval) = &pars_binary_token; ;} + break; + + case 158: +#line 557 "pars0grm.y" + { (yyval) = &pars_blob_token; ;} + break; + + case 159: +#line 562 "pars0grm.y" + { (yyval) = pars_parameter_declaration((yyvsp[-2]), + PARS_INPUT, (yyvsp[0])); ;} + break; + + case 160: +#line 565 "pars0grm.y" + { (yyval) = pars_parameter_declaration((yyvsp[-2]), + PARS_OUTPUT, (yyvsp[0])); ;} + break; + + case 161: +#line 570 "pars0grm.y" + { (yyval) = NULL; ;} + break; + + case 162: +#line 571 "pars0grm.y" + { (yyval) = que_node_list_add_last(NULL, (yyvsp[0])); ;} + break; + + case 163: +#line 573 "pars0grm.y" + { (yyval) = que_node_list_add_last((yyvsp[-2]), (yyvsp[0])); ;} + break; + + case 164: +#line 578 "pars0grm.y" + { (yyval) = pars_variable_declaration((yyvsp[-2]), (yyvsp[-1])); ;} + break; + + case 168: +#line 590 "pars0grm.y" + { (yyval) = pars_cursor_declaration((yyvsp[-3]), (yyvsp[-1])); ;} + break; + + case 169: +#line 595 "pars0grm.y" + { (yyval) = pars_function_declaration((yyvsp[-1])); ;} + break; + + case 175: +#line 616 "pars0grm.y" + { (yyval) = pars_procedure_definition((yyvsp[-9]), (yyvsp[-7]), + (yyvsp[-1])); ;} + break; + + + } + +/* Line 1010 of yacc.c. */ +#line 2345 "pars0grm.c" + + yyvsp -= yylen; + yyssp -= yylen; + + + YY_STACK_PRINT (yyss, yyssp); + + *++yyvsp = yyval; + + + /* Now `shift' the result of the reduction. Determine what state + that goes to, based on the state we popped back to and the rule + number reduced by. */ + + yyn = yyr1[yyn]; + + yystate = yypgoto[yyn - YYNTOKENS] + *yyssp; + if (0 <= yystate && yystate <= YYLAST && yycheck[yystate] == *yyssp) + yystate = yytable[yystate]; + else + yystate = yydefgoto[yyn - YYNTOKENS]; + + goto yynewstate; + + +/*------------------------------------. +| yyerrlab -- here on detecting error | +`------------------------------------*/ +yyerrlab: + /* If not already recovering from an error, report this error. */ + if (!yyerrstatus) + { + ++yynerrs; +#if YYERROR_VERBOSE + yyn = yypact[yystate]; + + if (YYPACT_NINF < yyn && yyn < YYLAST) + { + YYSIZE_T yysize = 0; + int yytype = YYTRANSLATE (yychar); + const char* yyprefix; + char *yymsg; + int yyx; + + /* Start YYX at -YYN if negative to avoid negative indexes in + YYCHECK. */ + int yyxbegin = yyn < 0 ? -yyn : 0; + + /* Stay within bounds of both yycheck and yytname. */ + int yychecklim = YYLAST - yyn; + int yyxend = yychecklim < YYNTOKENS ? yychecklim : YYNTOKENS; + int yycount = 0; + + yyprefix = ", expecting "; + for (yyx = yyxbegin; yyx < yyxend; ++yyx) + if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR) + { + yysize += yystrlen (yyprefix) + yystrlen (yytname [yyx]); + yycount += 1; + if (yycount == 5) + { + yysize = 0; + break; + } + } + yysize += (sizeof ("syntax error, unexpected ") + + yystrlen (yytname[yytype])); + yymsg = (char *) YYSTACK_ALLOC (yysize); + if (yymsg != 0) + { + char *yyp = yystpcpy (yymsg, "syntax error, unexpected "); + yyp = yystpcpy (yyp, yytname[yytype]); + + if (yycount < 5) + { + yyprefix = ", expecting "; + for (yyx = yyxbegin; yyx < yyxend; ++yyx) + if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR) + { + yyp = yystpcpy (yyp, yyprefix); + yyp = yystpcpy (yyp, yytname[yyx]); + yyprefix = " or "; + } + } + yyerror (yymsg); + YYSTACK_FREE (yymsg); + } + else + yyerror ("syntax error; also virtual memory exhausted"); + } + else +#endif /* YYERROR_VERBOSE */ + yyerror ("syntax error"); + } + + + + if (yyerrstatus == 3) + { + /* If just tried and failed to reuse look-ahead token after an + error, discard it. */ + + if (yychar <= YYEOF) + { + /* If at end of input, pop the error token, + then the rest of the stack, then return failure. */ + if (yychar == YYEOF) + for (;;) + { + + YYPOPSTACK; + if (yyssp == yyss) + YYABORT; + yydestruct ("Error: popping", + yystos[*yyssp], yyvsp); + } + } + else + { + yydestruct ("Error: discarding", yytoken, &yylval); + yychar = YYEMPTY; + } + } + + /* Else will try to reuse look-ahead token after shifting the error + token. */ + goto yyerrlab1; + + +/*---------------------------------------------------. +| yyerrorlab -- error raised explicitly by YYERROR. | +`---------------------------------------------------*/ +yyerrorlab: + +#ifdef __GNUC__ + /* Pacify GCC when the user code never invokes YYERROR and the label + yyerrorlab therefore never appears in user code. */ + if (0) + goto yyerrorlab; +#endif + +yyvsp -= yylen; + yyssp -= yylen; + yystate = *yyssp; + goto yyerrlab1; + + +/*-------------------------------------------------------------. +| yyerrlab1 -- common code for both syntax error and YYERROR. | +`-------------------------------------------------------------*/ +yyerrlab1: + yyerrstatus = 3; /* Each real token shifted decrements this. */ + + for (;;) + { + yyn = yypact[yystate]; + if (yyn != YYPACT_NINF) + { + yyn += YYTERROR; + if (0 <= yyn && yyn <= YYLAST && yycheck[yyn] == YYTERROR) + { + yyn = yytable[yyn]; + if (0 < yyn) + break; + } + } + + /* Pop the current state because it cannot handle the error token. */ + if (yyssp == yyss) + YYABORT; + + + yydestruct ("Error: popping", yystos[yystate], yyvsp); + YYPOPSTACK; + yystate = *yyssp; + YY_STACK_PRINT (yyss, yyssp); + } + + if (yyn == YYFINAL) + YYACCEPT; + + *++yyvsp = yylval; + + + /* Shift the error token. */ + YY_SYMBOL_PRINT ("Shifting", yystos[yyn], yyvsp, yylsp); + + yystate = yyn; + goto yynewstate; + + +/*-------------------------------------. +| yyacceptlab -- YYACCEPT comes here. | +`-------------------------------------*/ +yyacceptlab: + yyresult = 0; + goto yyreturn; + +/*-----------------------------------. +| yyabortlab -- YYABORT comes here. | +`-----------------------------------*/ +yyabortlab: + yydestruct ("Error: discarding lookahead", + yytoken, &yylval); + yychar = YYEMPTY; + yyresult = 1; + goto yyreturn; + +#ifndef yyoverflow +/*----------------------------------------------. +| yyoverflowlab -- parser overflow comes here. | +`----------------------------------------------*/ +yyoverflowlab: + yyerror ("parser stack overflow"); + yyresult = 2; + /* Fall through. */ +#endif + +yyreturn: +#ifndef yyoverflow + if (yyss != yyssa) + YYSTACK_FREE (yyss); +#endif + return yyresult; +} + + +#line 620 "pars0grm.y" + + === added file 'storage/xtradb/pars/pars0grm.y' --- a/storage/xtradb/pars/pars0grm.y 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/pars/pars0grm.y 2009-03-26 06:11:11 +0000 @@ -0,0 +1,635 @@ +/***************************************************************************** + +Copyright (c) 1997, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +SQL parser: input file for the GNU Bison parser generator + +Look from pars0lex.l for instructions how to generate the C files for +the InnoDB parser. + +Created 12/14/1997 Heikki Tuuri +*******************************************************/ + +%{ +/* The value of the semantic attribute is a pointer to a query tree node +que_node_t */ + +#include "univ.i" +#include <math.h> /* Can't be before univ.i */ +#include "pars0pars.h" +#include "mem0mem.h" +#include "que0types.h" +#include "que0que.h" +#include "row0sel.h" + +#define YYSTYPE que_node_t* + +/* #define __STDC__ */ + +int +yylex(void); +%} + +%token PARS_INT_LIT +%token PARS_FLOAT_LIT +%token PARS_STR_LIT +%token PARS_FIXBINARY_LIT +%token PARS_BLOB_LIT +%token PARS_NULL_LIT +%token PARS_ID_TOKEN +%token PARS_AND_TOKEN +%token PARS_OR_TOKEN +%token PARS_NOT_TOKEN +%token PARS_GE_TOKEN +%token PARS_LE_TOKEN +%token PARS_NE_TOKEN +%token PARS_PROCEDURE_TOKEN +%token PARS_IN_TOKEN +%token PARS_OUT_TOKEN +%token PARS_BINARY_TOKEN +%token PARS_BLOB_TOKEN +%token PARS_INT_TOKEN +%token PARS_INTEGER_TOKEN +%token PARS_FLOAT_TOKEN +%token PARS_CHAR_TOKEN +%token PARS_IS_TOKEN +%token PARS_BEGIN_TOKEN +%token PARS_END_TOKEN +%token PARS_IF_TOKEN +%token PARS_THEN_TOKEN +%token PARS_ELSE_TOKEN +%token PARS_ELSIF_TOKEN +%token PARS_LOOP_TOKEN +%token PARS_WHILE_TOKEN +%token PARS_RETURN_TOKEN +%token PARS_SELECT_TOKEN +%token PARS_SUM_TOKEN +%token PARS_COUNT_TOKEN +%token PARS_DISTINCT_TOKEN +%token PARS_FROM_TOKEN +%token PARS_WHERE_TOKEN +%token PARS_FOR_TOKEN +%token PARS_DDOT_TOKEN +%token PARS_READ_TOKEN +%token PARS_ORDER_TOKEN +%token PARS_BY_TOKEN +%token PARS_ASC_TOKEN +%token PARS_DESC_TOKEN +%token PARS_INSERT_TOKEN +%token PARS_INTO_TOKEN +%token PARS_VALUES_TOKEN +%token PARS_UPDATE_TOKEN +%token PARS_SET_TOKEN +%token PARS_DELETE_TOKEN +%token PARS_CURRENT_TOKEN +%token PARS_OF_TOKEN +%token PARS_CREATE_TOKEN +%token PARS_TABLE_TOKEN +%token PARS_INDEX_TOKEN +%token PARS_UNIQUE_TOKEN +%token PARS_CLUSTERED_TOKEN +%token PARS_DOES_NOT_FIT_IN_MEM_TOKEN +%token PARS_ON_TOKEN +%token PARS_ASSIGN_TOKEN +%token PARS_DECLARE_TOKEN +%token PARS_CURSOR_TOKEN +%token PARS_SQL_TOKEN +%token PARS_OPEN_TOKEN +%token PARS_FETCH_TOKEN +%token PARS_CLOSE_TOKEN +%token PARS_NOTFOUND_TOKEN +%token PARS_TO_CHAR_TOKEN +%token PARS_TO_NUMBER_TOKEN +%token PARS_TO_BINARY_TOKEN +%token PARS_BINARY_TO_NUMBER_TOKEN +%token PARS_SUBSTR_TOKEN +%token PARS_REPLSTR_TOKEN +%token PARS_CONCAT_TOKEN +%token PARS_INSTR_TOKEN +%token PARS_LENGTH_TOKEN +%token PARS_SYSDATE_TOKEN +%token PARS_PRINTF_TOKEN +%token PARS_ASSERT_TOKEN +%token PARS_RND_TOKEN +%token PARS_RND_STR_TOKEN +%token PARS_ROW_PRINTF_TOKEN +%token PARS_COMMIT_TOKEN +%token PARS_ROLLBACK_TOKEN +%token PARS_WORK_TOKEN +%token PARS_UNSIGNED_TOKEN +%token PARS_EXIT_TOKEN +%token PARS_FUNCTION_TOKEN +%token PARS_LOCK_TOKEN +%token PARS_SHARE_TOKEN +%token PARS_MODE_TOKEN + +%left PARS_AND_TOKEN PARS_OR_TOKEN +%left PARS_NOT_TOKEN +%left '=' '<' '>' PARS_GE_TOKEN PARS_LE_TOKEN +%left '-' '+' +%left '*' '/' +%left NEG /* negation--unary minus */ +%left '%' + +/* Grammar follows */ +%% + +top_statement: + procedure_definition ';' + +statement: + stored_procedure_call + | predefined_procedure_call ';' + | while_statement ';' + | for_statement ';' + | exit_statement ';' + | if_statement ';' + | return_statement ';' + | assignment_statement ';' + | select_statement ';' + | insert_statement ';' + | row_printf_statement ';' + | delete_statement_searched ';' + | delete_statement_positioned ';' + | update_statement_searched ';' + | update_statement_positioned ';' + | open_cursor_statement ';' + | fetch_statement ';' + | close_cursor_statement ';' + | commit_statement ';' + | rollback_statement ';' + | create_table ';' + | create_index ';' +; + +statement_list: + statement { $$ = que_node_list_add_last(NULL, $1); } + | statement_list statement + { $$ = que_node_list_add_last($1, $2); } +; + +exp: + PARS_ID_TOKEN { $$ = $1;} + | function_name '(' exp_list ')' + { $$ = pars_func($1, $3); } + | PARS_INT_LIT { $$ = $1;} + | PARS_FLOAT_LIT { $$ = $1;} + | PARS_STR_LIT { $$ = $1;} + | PARS_FIXBINARY_LIT { $$ = $1;} + | PARS_BLOB_LIT { $$ = $1;} + | PARS_NULL_LIT { $$ = $1;} + | PARS_SQL_TOKEN { $$ = $1;} + | exp '+' exp { $$ = pars_op('+', $1, $3); } + | exp '-' exp { $$ = pars_op('-', $1, $3); } + | exp '*' exp { $$ = pars_op('*', $1, $3); } + | exp '/' exp { $$ = pars_op('/', $1, $3); } + | '-' exp %prec NEG { $$ = pars_op('-', $2, NULL); } + | '(' exp ')' { $$ = $2; } + | exp '=' exp { $$ = pars_op('=', $1, $3); } + | exp '<' exp { $$ = pars_op('<', $1, $3); } + | exp '>' exp { $$ = pars_op('>', $1, $3); } + | exp PARS_GE_TOKEN exp { $$ = pars_op(PARS_GE_TOKEN, $1, $3); } + | exp PARS_LE_TOKEN exp { $$ = pars_op(PARS_LE_TOKEN, $1, $3); } + | exp PARS_NE_TOKEN exp { $$ = pars_op(PARS_NE_TOKEN, $1, $3); } + | exp PARS_AND_TOKEN exp{ $$ = pars_op(PARS_AND_TOKEN, $1, $3); } + | exp PARS_OR_TOKEN exp { $$ = pars_op(PARS_OR_TOKEN, $1, $3); } + | PARS_NOT_TOKEN exp { $$ = pars_op(PARS_NOT_TOKEN, $2, NULL); } + | PARS_ID_TOKEN '%' PARS_NOTFOUND_TOKEN + { $$ = pars_op(PARS_NOTFOUND_TOKEN, $1, NULL); } + | PARS_SQL_TOKEN '%' PARS_NOTFOUND_TOKEN + { $$ = pars_op(PARS_NOTFOUND_TOKEN, $1, NULL); } +; + +function_name: + PARS_TO_CHAR_TOKEN { $$ = &pars_to_char_token; } + | PARS_TO_NUMBER_TOKEN { $$ = &pars_to_number_token; } + | PARS_TO_BINARY_TOKEN { $$ = &pars_to_binary_token; } + | PARS_BINARY_TO_NUMBER_TOKEN + { $$ = &pars_binary_to_number_token; } + | PARS_SUBSTR_TOKEN { $$ = &pars_substr_token; } + | PARS_CONCAT_TOKEN { $$ = &pars_concat_token; } + | PARS_INSTR_TOKEN { $$ = &pars_instr_token; } + | PARS_LENGTH_TOKEN { $$ = &pars_length_token; } + | PARS_SYSDATE_TOKEN { $$ = &pars_sysdate_token; } + | PARS_RND_TOKEN { $$ = &pars_rnd_token; } + | PARS_RND_STR_TOKEN { $$ = &pars_rnd_str_token; } +; + +question_mark_list: + /* Nothing */ + | '?' + | question_mark_list ',' '?' +; + +stored_procedure_call: + '{' PARS_ID_TOKEN '(' question_mark_list ')' '}' + { $$ = pars_stored_procedure_call($2); } +; + +predefined_procedure_call: + predefined_procedure_name '(' exp_list ')' + { $$ = pars_procedure_call($1, $3); } +; + +predefined_procedure_name: + PARS_REPLSTR_TOKEN { $$ = &pars_replstr_token; } + | PARS_PRINTF_TOKEN { $$ = &pars_printf_token; } + | PARS_ASSERT_TOKEN { $$ = &pars_assert_token; } +; + +user_function_call: + PARS_ID_TOKEN '(' ')' { $$ = $1; } +; + +table_list: + PARS_ID_TOKEN { $$ = que_node_list_add_last(NULL, $1); } + | table_list ',' PARS_ID_TOKEN + { $$ = que_node_list_add_last($1, $3); } +; + +variable_list: + /* Nothing */ { $$ = NULL; } + | PARS_ID_TOKEN { $$ = que_node_list_add_last(NULL, $1); } + | variable_list ',' PARS_ID_TOKEN + { $$ = que_node_list_add_last($1, $3); } +; + +exp_list: + /* Nothing */ { $$ = NULL; } + | exp { $$ = que_node_list_add_last(NULL, $1);} + | exp_list ',' exp { $$ = que_node_list_add_last($1, $3); } +; + +select_item: + exp { $$ = $1; } + | PARS_COUNT_TOKEN '(' '*' ')' + { $$ = pars_func(&pars_count_token, + que_node_list_add_last(NULL, + sym_tab_add_int_lit( + pars_sym_tab_global, 1))); } + | PARS_COUNT_TOKEN '(' PARS_DISTINCT_TOKEN PARS_ID_TOKEN ')' + { $$ = pars_func(&pars_count_token, + que_node_list_add_last(NULL, + pars_func(&pars_distinct_token, + que_node_list_add_last( + NULL, $4)))); } + | PARS_SUM_TOKEN '(' exp ')' + { $$ = pars_func(&pars_sum_token, + que_node_list_add_last(NULL, + $3)); } +; + +select_item_list: + /* Nothing */ { $$ = NULL; } + | select_item { $$ = que_node_list_add_last(NULL, $1); } + | select_item_list ',' select_item + { $$ = que_node_list_add_last($1, $3); } +; + +select_list: + '*' { $$ = pars_select_list(&pars_star_denoter, + NULL); } + | select_item_list PARS_INTO_TOKEN variable_list + { $$ = pars_select_list($1, $3); } + | select_item_list { $$ = pars_select_list($1, NULL); } +; + +search_condition: + /* Nothing */ { $$ = NULL; } + | PARS_WHERE_TOKEN exp { $$ = $2; } +; + +for_update_clause: + /* Nothing */ { $$ = NULL; } + | PARS_FOR_TOKEN PARS_UPDATE_TOKEN + { $$ = &pars_update_token; } +; + +lock_shared_clause: + /* Nothing */ { $$ = NULL; } + | PARS_LOCK_TOKEN PARS_IN_TOKEN PARS_SHARE_TOKEN PARS_MODE_TOKEN + { $$ = &pars_share_token; } +; + +order_direction: + /* Nothing */ { $$ = &pars_asc_token; } + | PARS_ASC_TOKEN { $$ = &pars_asc_token; } + | PARS_DESC_TOKEN { $$ = &pars_desc_token; } +; + +order_by_clause: + /* Nothing */ { $$ = NULL; } + | PARS_ORDER_TOKEN PARS_BY_TOKEN PARS_ID_TOKEN order_direction + { $$ = pars_order_by($3, $4); } +; + +select_statement: + PARS_SELECT_TOKEN select_list + PARS_FROM_TOKEN table_list + search_condition + for_update_clause + lock_shared_clause + order_by_clause { $$ = pars_select_statement($2, $4, $5, + $6, $7, $8); } +; + +insert_statement_start: + PARS_INSERT_TOKEN PARS_INTO_TOKEN + PARS_ID_TOKEN { $$ = $3; } +; + +insert_statement: + insert_statement_start PARS_VALUES_TOKEN '(' exp_list ')' + { $$ = pars_insert_statement($1, $4, NULL); } + | insert_statement_start select_statement + { $$ = pars_insert_statement($1, NULL, $2); } +; + +column_assignment: + PARS_ID_TOKEN '=' exp { $$ = pars_column_assignment($1, $3); } +; + +column_assignment_list: + column_assignment { $$ = que_node_list_add_last(NULL, $1); } + | column_assignment_list ',' column_assignment + { $$ = que_node_list_add_last($1, $3); } +; + +cursor_positioned: + PARS_WHERE_TOKEN + PARS_CURRENT_TOKEN PARS_OF_TOKEN + PARS_ID_TOKEN { $$ = $4; } +; + +update_statement_start: + PARS_UPDATE_TOKEN PARS_ID_TOKEN + PARS_SET_TOKEN + column_assignment_list { $$ = pars_update_statement_start(FALSE, + $2, $4); } +; + +update_statement_searched: + update_statement_start + search_condition { $$ = pars_update_statement($1, NULL, $2); } +; + +update_statement_positioned: + update_statement_start + cursor_positioned { $$ = pars_update_statement($1, $2, NULL); } +; + +delete_statement_start: + PARS_DELETE_TOKEN PARS_FROM_TOKEN + PARS_ID_TOKEN { $$ = pars_update_statement_start(TRUE, + $3, NULL); } +; + +delete_statement_searched: + delete_statement_start + search_condition { $$ = pars_update_statement($1, NULL, $2); } +; + +delete_statement_positioned: + delete_statement_start + cursor_positioned { $$ = pars_update_statement($1, $2, NULL); } +; + +row_printf_statement: + PARS_ROW_PRINTF_TOKEN select_statement + { $$ = pars_row_printf_statement($2); } +; + +assignment_statement: + PARS_ID_TOKEN PARS_ASSIGN_TOKEN exp + { $$ = pars_assignment_statement($1, $3); } +; + +elsif_element: + PARS_ELSIF_TOKEN + exp PARS_THEN_TOKEN statement_list + { $$ = pars_elsif_element($2, $4); } +; + +elsif_list: + elsif_element { $$ = que_node_list_add_last(NULL, $1); } + | elsif_list elsif_element + { $$ = que_node_list_add_last($1, $2); } +; + +else_part: + /* Nothing */ { $$ = NULL; } + | PARS_ELSE_TOKEN statement_list + { $$ = $2; } + | elsif_list { $$ = $1; } +; + +if_statement: + PARS_IF_TOKEN exp PARS_THEN_TOKEN statement_list + else_part + PARS_END_TOKEN PARS_IF_TOKEN + { $$ = pars_if_statement($2, $4, $5); } +; + +while_statement: + PARS_WHILE_TOKEN exp PARS_LOOP_TOKEN statement_list + PARS_END_TOKEN PARS_LOOP_TOKEN + { $$ = pars_while_statement($2, $4); } +; + +for_statement: + PARS_FOR_TOKEN PARS_ID_TOKEN PARS_IN_TOKEN + exp PARS_DDOT_TOKEN exp + PARS_LOOP_TOKEN statement_list + PARS_END_TOKEN PARS_LOOP_TOKEN + { $$ = pars_for_statement($2, $4, $6, $8); } +; + +exit_statement: + PARS_EXIT_TOKEN { $$ = pars_exit_statement(); } +; + +return_statement: + PARS_RETURN_TOKEN { $$ = pars_return_statement(); } +; + +open_cursor_statement: + PARS_OPEN_TOKEN PARS_ID_TOKEN + { $$ = pars_open_statement( + ROW_SEL_OPEN_CURSOR, $2); } +; + +close_cursor_statement: + PARS_CLOSE_TOKEN PARS_ID_TOKEN + { $$ = pars_open_statement( + ROW_SEL_CLOSE_CURSOR, $2); } +; + +fetch_statement: + PARS_FETCH_TOKEN PARS_ID_TOKEN PARS_INTO_TOKEN variable_list + { $$ = pars_fetch_statement($2, $4, NULL); } + | PARS_FETCH_TOKEN PARS_ID_TOKEN PARS_INTO_TOKEN user_function_call + { $$ = pars_fetch_statement($2, NULL, $4); } +; + +column_def: + PARS_ID_TOKEN type_name opt_column_len opt_unsigned opt_not_null + { $$ = pars_column_def($1, $2, $3, $4, $5); } +; + +column_def_list: + column_def { $$ = que_node_list_add_last(NULL, $1); } + | column_def_list ',' column_def + { $$ = que_node_list_add_last($1, $3); } +; + +opt_column_len: + /* Nothing */ { $$ = NULL; } + | '(' PARS_INT_LIT ')' + { $$ = $2; } +; + +opt_unsigned: + /* Nothing */ { $$ = NULL; } + | PARS_UNSIGNED_TOKEN + { $$ = &pars_int_token; + /* pass any non-NULL pointer */ } +; + +opt_not_null: + /* Nothing */ { $$ = NULL; } + | PARS_NOT_TOKEN PARS_NULL_LIT + { $$ = &pars_int_token; + /* pass any non-NULL pointer */ } +; + +not_fit_in_memory: + /* Nothing */ { $$ = NULL; } + | PARS_DOES_NOT_FIT_IN_MEM_TOKEN + { $$ = &pars_int_token; + /* pass any non-NULL pointer */ } +; + +create_table: + PARS_CREATE_TOKEN PARS_TABLE_TOKEN + PARS_ID_TOKEN '(' column_def_list ')' + not_fit_in_memory { $$ = pars_create_table($3, $5, $7); } +; + +column_list: + PARS_ID_TOKEN { $$ = que_node_list_add_last(NULL, $1); } + | column_list ',' PARS_ID_TOKEN + { $$ = que_node_list_add_last($1, $3); } +; + +unique_def: + /* Nothing */ { $$ = NULL; } + | PARS_UNIQUE_TOKEN { $$ = &pars_unique_token; } +; + +clustered_def: + /* Nothing */ { $$ = NULL; } + | PARS_CLUSTERED_TOKEN { $$ = &pars_clustered_token; } +; + +create_index: + PARS_CREATE_TOKEN unique_def + clustered_def + PARS_INDEX_TOKEN + PARS_ID_TOKEN PARS_ON_TOKEN PARS_ID_TOKEN + '(' column_list ')' { $$ = pars_create_index($2, $3, $5, $7, $9); } +; + +commit_statement: + PARS_COMMIT_TOKEN PARS_WORK_TOKEN + { $$ = pars_commit_statement(); } +; + +rollback_statement: + PARS_ROLLBACK_TOKEN PARS_WORK_TOKEN + { $$ = pars_rollback_statement(); } +; + +type_name: + PARS_INT_TOKEN { $$ = &pars_int_token; } + | PARS_INTEGER_TOKEN { $$ = &pars_int_token; } + | PARS_CHAR_TOKEN { $$ = &pars_char_token; } + | PARS_BINARY_TOKEN { $$ = &pars_binary_token; } + | PARS_BLOB_TOKEN { $$ = &pars_blob_token; } +; + +parameter_declaration: + PARS_ID_TOKEN PARS_IN_TOKEN type_name + { $$ = pars_parameter_declaration($1, + PARS_INPUT, $3); } + | PARS_ID_TOKEN PARS_OUT_TOKEN type_name + { $$ = pars_parameter_declaration($1, + PARS_OUTPUT, $3); } +; + +parameter_declaration_list: + /* Nothing */ { $$ = NULL; } + | parameter_declaration { $$ = que_node_list_add_last(NULL, $1); } + | parameter_declaration_list ',' parameter_declaration + { $$ = que_node_list_add_last($1, $3); } +; + +variable_declaration: + PARS_ID_TOKEN type_name ';' + { $$ = pars_variable_declaration($1, $2); } +; + +variable_declaration_list: + /* Nothing */ + | variable_declaration + | variable_declaration_list variable_declaration +; + +cursor_declaration: + PARS_DECLARE_TOKEN PARS_CURSOR_TOKEN PARS_ID_TOKEN + PARS_IS_TOKEN select_statement ';' + { $$ = pars_cursor_declaration($3, $5); } +; + +function_declaration: + PARS_DECLARE_TOKEN PARS_FUNCTION_TOKEN PARS_ID_TOKEN ';' + { $$ = pars_function_declaration($3); } +; + +declaration: + cursor_declaration + | function_declaration +; + +declaration_list: + /* Nothing */ + | declaration + | declaration_list declaration +; + +procedure_definition: + PARS_PROCEDURE_TOKEN PARS_ID_TOKEN '(' parameter_declaration_list ')' + PARS_IS_TOKEN + variable_declaration_list + declaration_list + PARS_BEGIN_TOKEN + statement_list + PARS_END_TOKEN { $$ = pars_procedure_definition($2, $4, + $10); } +; + +%% === added file 'storage/xtradb/pars/pars0lex.l' --- a/storage/xtradb/pars/pars0lex.l 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/pars/pars0lex.l 2009-03-26 06:11:11 +0000 @@ -0,0 +1,663 @@ +/***************************************************************************** + +Copyright (c) 1997, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +SQL parser lexical analyzer: input file for the GNU Flex lexer generator + +The InnoDB parser is frozen because MySQL takes care of SQL parsing. +Therefore we normally keep the InnoDB parser C files as they are, and do +not automatically generate them from pars0grm.y and pars0lex.l. + +How to make the InnoDB parser and lexer C files: + +1. Run ./make_flex.sh to generate lexer files. + +2. Run ./make_bison.sh to generate parser files. + +These instructions seem to work at least with bison-1.875d and flex-2.5.31 on +Linux. + +Created 12/14/1997 Heikki Tuuri +*******************************************************/ + +%option nostdinit +%option 8bit +%option warn +%option pointer +%option never-interactive +%option nodefault +%option noinput +%option nounput +%option noyywrap +%option noyy_scan_buffer +%option noyy_scan_bytes +%option noyy_scan_string +%option nounistd + +%{ +#define YYSTYPE que_node_t* + +#include "univ.i" +#include "pars0pars.h" +#include "pars0grm.h" +#include "pars0sym.h" +#include "mem0mem.h" +#include "os0proc.h" + +#define malloc(A) ut_malloc(A) +#define free(A) ut_free(A) +#define realloc(P, A) ut_realloc(P, A) +#define exit(A) ut_error + +#define YY_INPUT(buf, result, max_size) pars_get_lex_chars(buf, &result, max_size) + +/* String buffer for removing quotes */ +static ulint stringbuf_len_alloc = 0; /* Allocated length */ +static ulint stringbuf_len = 0; /* Current length */ +static char* stringbuf; /* Start of buffer */ +/* Appends a string to the buffer. */ +static +void +string_append( +/*==========*/ + const char* str, /* in: string to be appended */ + ulint len) /* in: length of the string */ +{ + if (stringbuf == NULL) { + stringbuf = malloc(1); + stringbuf_len_alloc = 1; + } + + if (stringbuf_len + len > stringbuf_len_alloc) { + while (stringbuf_len + len > stringbuf_len_alloc) { + stringbuf_len_alloc <<= 1; + } + stringbuf = realloc(stringbuf, stringbuf_len_alloc); + } + + memcpy(stringbuf + stringbuf_len, str, len); + stringbuf_len += len; +} + +%} + +DIGIT [0-9] +ID [a-z_A-Z][a-z_A-Z0-9]* +BOUND_LIT \:[a-z_A-Z0-9]+ +BOUND_ID \$[a-z_A-Z0-9]+ + +%x comment +%x quoted +%x id +%% + +{DIGIT}+ { + yylval = sym_tab_add_int_lit(pars_sym_tab_global, + atoi(yytext)); + return(PARS_INT_LIT); +} + +{DIGIT}+"."{DIGIT}* { + ut_error; /* not implemented */ + + return(PARS_FLOAT_LIT); +} + +{BOUND_LIT} { + ulint type; + + yylval = sym_tab_add_bound_lit(pars_sym_tab_global, + yytext + 1, &type); + + return((int) type); +} + +{BOUND_ID} { + yylval = sym_tab_add_bound_id(pars_sym_tab_global, + yytext + 1); + + return(PARS_ID_TOKEN); +} + +"'" { +/* Quoted character string literals are handled in an explicit +start state 'quoted'. This state is entered and the buffer for +the scanned string is emptied upon encountering a starting quote. + +In the state 'quoted', only two actions are possible (defined below). */ + BEGIN(quoted); + stringbuf_len = 0; +} +<quoted>[^\']+ { + /* Got a sequence of characters other than "'": + append to string buffer */ + string_append(yytext, yyleng); +} +<quoted>"'"+ { + /* Got a sequence of "'" characters: + append half of them to string buffer, + as "''" represents a single "'". + We apply truncating division, + so that "'''" will result in "'". */ + + string_append(yytext, yyleng / 2); + + /* If we got an odd number of quotes, then the + last quote we got is the terminating quote. + At the end of the string, we return to the + initial start state and report the scanned + string literal. */ + + if (yyleng % 2) { + BEGIN(INITIAL); + yylval = sym_tab_add_str_lit( + pars_sym_tab_global, + (byte*) stringbuf, stringbuf_len); + return(PARS_STR_LIT); + } +} + +\" { +/* Quoted identifiers are handled in an explicit start state 'id'. +This state is entered and the buffer for the scanned string is emptied +upon encountering a starting quote. + +In the state 'id', only two actions are possible (defined below). */ + BEGIN(id); + stringbuf_len = 0; +} +<id>[^\"]+ { + /* Got a sequence of characters other than '"': + append to string buffer */ + string_append(yytext, yyleng); +} +<id>\"+ { + /* Got a sequence of '"' characters: + append half of them to string buffer, + as '""' represents a single '"'. + We apply truncating division, + so that '"""' will result in '"'. */ + + string_append(yytext, yyleng / 2); + + /* If we got an odd number of quotes, then the + last quote we got is the terminating quote. + At the end of the string, we return to the + initial start state and report the scanned + identifier. */ + + if (yyleng % 2) { + BEGIN(INITIAL); + yylval = sym_tab_add_id( + pars_sym_tab_global, + (byte*) stringbuf, stringbuf_len); + + return(PARS_ID_TOKEN); + } +} + +"NULL" { + yylval = sym_tab_add_null_lit(pars_sym_tab_global); + + return(PARS_NULL_LIT); +} + +"SQL" { + /* Implicit cursor name */ + yylval = sym_tab_add_str_lit(pars_sym_tab_global, + (byte*) yytext, yyleng); + return(PARS_SQL_TOKEN); +} + +"AND" { + return(PARS_AND_TOKEN); +} + +"OR" { + return(PARS_OR_TOKEN); +} + +"NOT" { + return(PARS_NOT_TOKEN); +} + +"PROCEDURE" { + return(PARS_PROCEDURE_TOKEN); +} + +"IN" { + return(PARS_IN_TOKEN); +} + +"OUT" { + return(PARS_OUT_TOKEN); +} + +"BINARY" { + return(PARS_BINARY_TOKEN); +} + +"BLOB" { + return(PARS_BLOB_TOKEN); +} + +"INT" { + return(PARS_INT_TOKEN); +} + +"INTEGER" { + return(PARS_INT_TOKEN); +} + +"FLOAT" { + return(PARS_FLOAT_TOKEN); +} + +"CHAR" { + return(PARS_CHAR_TOKEN); +} + +"IS" { + return(PARS_IS_TOKEN); +} + +"BEGIN" { + return(PARS_BEGIN_TOKEN); +} + +"END" { + return(PARS_END_TOKEN); +} + +"IF" { + return(PARS_IF_TOKEN); +} + +"THEN" { + return(PARS_THEN_TOKEN); +} + +"ELSE" { + return(PARS_ELSE_TOKEN); +} + +"ELSIF" { + return(PARS_ELSIF_TOKEN); +} + +"LOOP" { + return(PARS_LOOP_TOKEN); +} + +"WHILE" { + return(PARS_WHILE_TOKEN); +} + +"RETURN" { + return(PARS_RETURN_TOKEN); +} + +"SELECT" { + return(PARS_SELECT_TOKEN); +} + +"SUM" { + return(PARS_SUM_TOKEN); +} + +"COUNT" { + return(PARS_COUNT_TOKEN); +} + +"DISTINCT" { + return(PARS_DISTINCT_TOKEN); +} + +"FROM" { + return(PARS_FROM_TOKEN); +} + +"WHERE" { + return(PARS_WHERE_TOKEN); +} + +"FOR" { + return(PARS_FOR_TOKEN); +} + +"READ" { + return(PARS_READ_TOKEN); +} + +"ORDER" { + return(PARS_ORDER_TOKEN); +} + +"BY" { + return(PARS_BY_TOKEN); +} + +"ASC" { + return(PARS_ASC_TOKEN); +} + +"DESC" { + return(PARS_DESC_TOKEN); +} + +"INSERT" { + return(PARS_INSERT_TOKEN); +} + +"INTO" { + return(PARS_INTO_TOKEN); +} + +"VALUES" { + return(PARS_VALUES_TOKEN); +} + +"UPDATE" { + return(PARS_UPDATE_TOKEN); +} + +"SET" { + return(PARS_SET_TOKEN); +} + +"DELETE" { + return(PARS_DELETE_TOKEN); +} + +"CURRENT" { + return(PARS_CURRENT_TOKEN); +} + +"OF" { + return(PARS_OF_TOKEN); +} + +"CREATE" { + return(PARS_CREATE_TOKEN); +} + +"TABLE" { + return(PARS_TABLE_TOKEN); +} + +"INDEX" { + return(PARS_INDEX_TOKEN); +} + +"UNIQUE" { + return(PARS_UNIQUE_TOKEN); +} + +"CLUSTERED" { + return(PARS_CLUSTERED_TOKEN); +} + +"DOES_NOT_FIT_IN_MEMORY" { + return(PARS_DOES_NOT_FIT_IN_MEM_TOKEN); +} + +"ON" { + return(PARS_ON_TOKEN); +} + +"DECLARE" { + return(PARS_DECLARE_TOKEN); +} + +"CURSOR" { + return(PARS_CURSOR_TOKEN); +} + +"OPEN" { + return(PARS_OPEN_TOKEN); +} + +"FETCH" { + return(PARS_FETCH_TOKEN); +} + +"CLOSE" { + return(PARS_CLOSE_TOKEN); +} + +"NOTFOUND" { + return(PARS_NOTFOUND_TOKEN); +} + +"TO_CHAR" { + return(PARS_TO_CHAR_TOKEN); +} + +"TO_NUMBER" { + return(PARS_TO_NUMBER_TOKEN); +} + +"TO_BINARY" { + return(PARS_TO_BINARY_TOKEN); +} + +"BINARY_TO_NUMBER" { + return(PARS_BINARY_TO_NUMBER_TOKEN); +} + +"SUBSTR" { + return(PARS_SUBSTR_TOKEN); +} + +"REPLSTR" { + return(PARS_REPLSTR_TOKEN); +} + +"CONCAT" { + return(PARS_CONCAT_TOKEN); +} + +"INSTR" { + return(PARS_INSTR_TOKEN); +} + +"LENGTH" { + return(PARS_LENGTH_TOKEN); +} + +"SYSDATE" { + return(PARS_SYSDATE_TOKEN); +} + +"PRINTF" { + return(PARS_PRINTF_TOKEN); +} + +"ASSERT" { + return(PARS_ASSERT_TOKEN); +} + +"RND" { + return(PARS_RND_TOKEN); +} + +"RND_STR" { + return(PARS_RND_STR_TOKEN); +} + +"ROW_PRINTF" { + return(PARS_ROW_PRINTF_TOKEN); +} + +"COMMIT" { + return(PARS_COMMIT_TOKEN); +} + +"ROLLBACK" { + return(PARS_ROLLBACK_TOKEN); +} + +"WORK" { + return(PARS_WORK_TOKEN); +} + +"UNSIGNED" { + return(PARS_UNSIGNED_TOKEN); +} + +"EXIT" { + return(PARS_EXIT_TOKEN); +} + +"FUNCTION" { + return(PARS_FUNCTION_TOKEN); +} + +"LOCK" { + return(PARS_LOCK_TOKEN); +} + +"SHARE" { + return(PARS_SHARE_TOKEN); +} + +"MODE" { + return(PARS_MODE_TOKEN); +} + +{ID} { + yylval = sym_tab_add_id(pars_sym_tab_global, + (byte*)yytext, + ut_strlen(yytext)); + return(PARS_ID_TOKEN); +} + +".." { + return(PARS_DDOT_TOKEN); +} + +":=" { + return(PARS_ASSIGN_TOKEN); +} + +"<=" { + return(PARS_LE_TOKEN); +} + +">=" { + return(PARS_GE_TOKEN); +} + +"<>" { + return(PARS_NE_TOKEN); +} + +"(" { + + return((int)(*yytext)); +} + +"=" { + + return((int)(*yytext)); +} + +">" { + + return((int)(*yytext)); +} + +"<" { + + return((int)(*yytext)); +} + +"," { + + return((int)(*yytext)); +} + +";" { + + return((int)(*yytext)); +} + +")" { + + return((int)(*yytext)); +} + +"+" { + + return((int)(*yytext)); +} + +"-" { + + return((int)(*yytext)); +} + +"*" { + + return((int)(*yytext)); +} + +"/" { + + return((int)(*yytext)); +} + +"%" { + + return((int)(*yytext)); +} + +"{" { + + return((int)(*yytext)); +} + +"}" { + + return((int)(*yytext)); +} + +"?" { + + return((int)(*yytext)); +} + +"/*" BEGIN(comment); /* eat up comment */ + +<comment>[^*]* +<comment>"*"+[^*/]* +<comment>"*"+"/" BEGIN(INITIAL); + +[ \t\n]+ /* eat up whitespace */ + + +. { + fprintf(stderr,"Unrecognized character: %02x\n", + *yytext); + + ut_error; + + return(0); +} + +%% === added file 'storage/xtradb/pars/pars0opt.c' --- a/storage/xtradb/pars/pars0opt.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/pars/pars0opt.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,1224 @@ +/***************************************************************************** + +Copyright (c) 1997, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Simple SQL optimizer + +Created 12/21/1997 Heikki Tuuri +*******************************************************/ + +#include "pars0opt.h" + +#ifdef UNIV_NONINL +#include "pars0opt.ic" +#endif + +#include "row0sel.h" +#include "row0ins.h" +#include "row0upd.h" +#include "dict0dict.h" +#include "dict0mem.h" +#include "que0que.h" +#include "pars0grm.h" +#include "pars0pars.h" +#include "lock0lock.h" + +#define OPT_EQUAL 1 /* comparison by = */ +#define OPT_COMPARISON 2 /* comparison by <, >, <=, or >= */ + +#define OPT_NOT_COND 1 +#define OPT_END_COND 2 +#define OPT_TEST_COND 3 +#define OPT_SCROLL_COND 4 + + +/*********************************************************************** +Inverts a comparison operator. */ +static +int +opt_invert_cmp_op( +/*==============*/ + /* out: the equivalent operator when the order of + the arguments is switched */ + int op) /* in: operator */ +{ + if (op == '<') { + return('>'); + } else if (op == '>') { + return('<'); + } else if (op == '=') { + return('='); + } else if (op == PARS_LE_TOKEN) { + return(PARS_GE_TOKEN); + } else if (op == PARS_GE_TOKEN) { + return(PARS_LE_TOKEN); + } else { + ut_error; + } + + return(0); +} + +/*********************************************************************** +Checks if the value of an expression can be calculated BEFORE the nth table +in a join is accessed. If this is the case, it can possibly be used in an +index search for the nth table. */ +static +ibool +opt_check_exp_determined_before( +/*============================*/ + /* out: TRUE if already determined */ + que_node_t* exp, /* in: expression */ + sel_node_t* sel_node, /* in: select node */ + ulint nth_table) /* in: nth table will be accessed */ +{ + func_node_t* func_node; + sym_node_t* sym_node; + dict_table_t* table; + que_node_t* arg; + ulint i; + + ut_ad(exp && sel_node); + + if (que_node_get_type(exp) == QUE_NODE_FUNC) { + func_node = exp; + + arg = func_node->args; + + while (arg) { + if (!opt_check_exp_determined_before(arg, sel_node, + nth_table)) { + return(FALSE); + } + + arg = que_node_get_next(arg); + } + + return(TRUE); + } + + ut_a(que_node_get_type(exp) == QUE_NODE_SYMBOL); + + sym_node = exp; + + if (sym_node->token_type != SYM_COLUMN) { + + return(TRUE); + } + + for (i = 0; i < nth_table; i++) { + + table = sel_node_get_nth_plan(sel_node, i)->table; + + if (sym_node->table == table) { + + return(TRUE); + } + } + + return(FALSE); +} + +/*********************************************************************** +Looks in a comparison condition if a column value is already restricted by +it BEFORE the nth table is accessed. */ +static +que_node_t* +opt_look_for_col_in_comparison_before( +/*==================================*/ + /* out: expression restricting the + value of the column, or NULL if not + known */ + ulint cmp_type, /* in: OPT_EQUAL, OPT_COMPARISON */ + ulint col_no, /* in: column number */ + func_node_t* search_cond, /* in: comparison condition */ + sel_node_t* sel_node, /* in: select node */ + ulint nth_table, /* in: nth table in a join (a query + from a single table is considered a + join of 1 table) */ + ulint* op) /* out: comparison operator ('=', + PARS_GE_TOKEN, ... ); this is inverted + if the column appears on the right + side */ +{ + sym_node_t* sym_node; + dict_table_t* table; + que_node_t* exp; + que_node_t* arg; + + ut_ad(search_cond); + + ut_a((search_cond->func == '<') + || (search_cond->func == '>') + || (search_cond->func == '=') + || (search_cond->func == PARS_GE_TOKEN) + || (search_cond->func == PARS_LE_TOKEN)); + + table = sel_node_get_nth_plan(sel_node, nth_table)->table; + + if ((cmp_type == OPT_EQUAL) && (search_cond->func != '=')) { + + return(NULL); + + } else if ((cmp_type == OPT_COMPARISON) + && (search_cond->func != '<') + && (search_cond->func != '>') + && (search_cond->func != PARS_GE_TOKEN) + && (search_cond->func != PARS_LE_TOKEN)) { + + return(NULL); + } + + arg = search_cond->args; + + if (que_node_get_type(arg) == QUE_NODE_SYMBOL) { + sym_node = arg; + + if ((sym_node->token_type == SYM_COLUMN) + && (sym_node->table == table) + && (sym_node->col_no == col_no)) { + + /* sym_node contains the desired column id */ + + /* Check if the expression on the right side of the + operator is already determined */ + + exp = que_node_get_next(arg); + + if (opt_check_exp_determined_before(exp, sel_node, + nth_table)) { + *op = search_cond->func; + + return(exp); + } + } + } + + exp = search_cond->args; + arg = que_node_get_next(arg); + + if (que_node_get_type(arg) == QUE_NODE_SYMBOL) { + sym_node = arg; + + if ((sym_node->token_type == SYM_COLUMN) + && (sym_node->table == table) + && (sym_node->col_no == col_no)) { + + if (opt_check_exp_determined_before(exp, sel_node, + nth_table)) { + *op = opt_invert_cmp_op(search_cond->func); + + return(exp); + } + } + } + + return(NULL); +} + +/*********************************************************************** +Looks in a search condition if a column value is already restricted by the +search condition BEFORE the nth table is accessed. Takes into account that +if we will fetch in an ascending order, we cannot utilize an upper limit for +a column value; in a descending order, respectively, a lower limit. */ +static +que_node_t* +opt_look_for_col_in_cond_before( +/*============================*/ + /* out: expression restricting the + value of the column, or NULL if not + known */ + ulint cmp_type, /* in: OPT_EQUAL, OPT_COMPARISON */ + ulint col_no, /* in: column number */ + func_node_t* search_cond, /* in: search condition or NULL */ + sel_node_t* sel_node, /* in: select node */ + ulint nth_table, /* in: nth table in a join (a query + from a single table is considered a + join of 1 table) */ + ulint* op) /* out: comparison operator ('=', + PARS_GE_TOKEN, ... ) */ +{ + func_node_t* new_cond; + que_node_t* exp; + + if (search_cond == NULL) { + + return(NULL); + } + + ut_a(que_node_get_type(search_cond) == QUE_NODE_FUNC); + ut_a(search_cond->func != PARS_OR_TOKEN); + ut_a(search_cond->func != PARS_NOT_TOKEN); + + if (search_cond->func == PARS_AND_TOKEN) { + new_cond = search_cond->args; + + exp = opt_look_for_col_in_cond_before(cmp_type, col_no, + new_cond, sel_node, + nth_table, op); + if (exp) { + + return(exp); + } + + new_cond = que_node_get_next(new_cond); + + exp = opt_look_for_col_in_cond_before(cmp_type, col_no, + new_cond, sel_node, + nth_table, op); + return(exp); + } + + exp = opt_look_for_col_in_comparison_before(cmp_type, col_no, + search_cond, sel_node, + nth_table, op); + if (exp == NULL) { + + return(NULL); + } + + /* If we will fetch in an ascending order, we cannot utilize an upper + limit for a column value; in a descending order, respectively, a lower + limit */ + + if (sel_node->asc && ((*op == '<') || (*op == PARS_LE_TOKEN))) { + + return(NULL); + + } else if (!sel_node->asc + && ((*op == '>') || (*op == PARS_GE_TOKEN))) { + + return(NULL); + } + + return(exp); +} + +/*********************************************************************** +Calculates the goodness for an index according to a select node. The +goodness is 4 times the number of first fields in index whose values we +already know exactly in the query. If we have a comparison condition for +an additional field, 2 point are added. If the index is unique, and we know +all the unique fields for the index we add 1024 points. For a clustered index +we add 1 point. */ +static +ulint +opt_calc_index_goodness( +/*====================*/ + /* out: goodness */ + dict_index_t* index, /* in: index */ + sel_node_t* sel_node, /* in: parsed select node */ + ulint nth_table, /* in: nth table in a join */ + que_node_t** index_plan, /* in/out: comparison expressions for + this index */ + ulint* last_op) /* out: last comparison operator, if + goodness > 1 */ +{ + que_node_t* exp; + ulint goodness; + ulint n_fields; + ulint col_no; + ulint op; + ulint j; + + goodness = 0; + + /* Note that as higher level node pointers in the B-tree contain + page addresses as the last field, we must not put more fields in + the search tuple than dict_index_get_n_unique_in_tree(index); see + the note in btr_cur_search_to_nth_level. */ + + n_fields = dict_index_get_n_unique_in_tree(index); + + for (j = 0; j < n_fields; j++) { + + col_no = dict_index_get_nth_col_no(index, j); + + exp = opt_look_for_col_in_cond_before( + OPT_EQUAL, col_no, sel_node->search_cond, + sel_node, nth_table, &op); + if (exp) { + /* The value for this column is exactly known already + at this stage of the join */ + + index_plan[j] = exp; + *last_op = op; + goodness += 4; + } else { + /* Look for non-equality comparisons */ + + exp = opt_look_for_col_in_cond_before( + OPT_COMPARISON, col_no, sel_node->search_cond, + sel_node, nth_table, &op); + if (exp) { + index_plan[j] = exp; + *last_op = op; + goodness += 2; + } + + break; + } + } + + if (goodness >= 4 * dict_index_get_n_unique(index)) { + goodness += 1024; + + if (dict_index_is_clust(index)) { + + goodness += 1024; + } + } + + /* We have to test for goodness here, as last_op may note be set */ + if (goodness && dict_index_is_clust(index)) { + + goodness++; + } + + return(goodness); +} + +/*********************************************************************** +Calculates the number of matched fields based on an index goodness. */ +UNIV_INLINE +ulint +opt_calc_n_fields_from_goodness( +/*============================*/ + /* out: number of excatly or partially matched + fields */ + ulint goodness) /* in: goodness */ +{ + return(((goodness % 1024) + 2) / 4); +} + +/*********************************************************************** +Converts a comparison operator to the corresponding search mode PAGE_CUR_GE, +... */ +UNIV_INLINE +ulint +opt_op_to_search_mode( +/*==================*/ + /* out: search mode */ + ibool asc, /* in: TRUE if the rows should be fetched in an + ascending order */ + ulint op) /* in: operator '=', PARS_GE_TOKEN, ... */ +{ + if (op == '=') { + if (asc) { + return(PAGE_CUR_GE); + } else { + return(PAGE_CUR_LE); + } + } else if (op == '<') { + ut_a(!asc); + return(PAGE_CUR_L); + } else if (op == '>') { + ut_a(asc); + return(PAGE_CUR_G); + } else if (op == PARS_GE_TOKEN) { + ut_a(asc); + return(PAGE_CUR_GE); + } else if (op == PARS_LE_TOKEN) { + ut_a(!asc); + return(PAGE_CUR_LE); + } else { + ut_error; + } + + return(0); +} + +/*********************************************************************** +Determines if a node is an argument node of a function node. */ +static +ibool +opt_is_arg( +/*=======*/ + /* out: TRUE if is an argument */ + que_node_t* arg_node, /* in: possible argument node */ + func_node_t* func_node) /* in: function node */ +{ + que_node_t* arg; + + arg = func_node->args; + + while (arg) { + if (arg == arg_node) { + + return(TRUE); + } + + arg = que_node_get_next(arg); + } + + return(FALSE); +} + +/*********************************************************************** +Decides if the fetching of rows should be made in a descending order, and +also checks that the chosen query plan produces a result which satisfies +the order-by. */ +static +void +opt_check_order_by( +/*===============*/ + sel_node_t* sel_node) /* in: select node; asserts an error + if the plan does not agree with the + order-by */ +{ + order_node_t* order_node; + dict_table_t* order_table; + ulint order_col_no; + plan_t* plan; + ulint i; + + if (!sel_node->order_by) { + + return; + } + + order_node = sel_node->order_by; + order_col_no = order_node->column->col_no; + order_table = order_node->column->table; + + /* If there is an order-by clause, the first non-exactly matched field + in the index used for the last table in the table list should be the + column defined in the order-by clause, and for all the other tables + we should get only at most a single row, otherwise we cannot presently + calculate the order-by, as we have no sort utility */ + + for (i = 0; i < sel_node->n_tables; i++) { + + plan = sel_node_get_nth_plan(sel_node, i); + + if (i < sel_node->n_tables - 1) { + ut_a(dict_index_get_n_unique(plan->index) + <= plan->n_exact_match); + } else { + ut_a(plan->table == order_table); + + ut_a((dict_index_get_n_unique(plan->index) + <= plan->n_exact_match) + || (dict_index_get_nth_col_no(plan->index, + plan->n_exact_match) + == order_col_no)); + } + } +} + +/*********************************************************************** +Optimizes a select. Decides which indexes to tables to use. The tables +are accessed in the order that they were written to the FROM part in the +select statement. */ +static +void +opt_search_plan_for_table( +/*======================*/ + sel_node_t* sel_node, /* in: parsed select node */ + ulint i, /* in: this is the ith table */ + dict_table_t* table) /* in: table */ +{ + plan_t* plan; + dict_index_t* index; + dict_index_t* best_index; + ulint n_fields; + ulint goodness; + ulint last_op = 75946965; /* Eliminate a Purify + warning */ + ulint best_goodness; + ulint best_last_op = 0; /* remove warning */ + que_node_t* index_plan[256]; + que_node_t* best_index_plan[256]; + + plan = sel_node_get_nth_plan(sel_node, i); + + plan->table = table; + plan->asc = sel_node->asc; + plan->pcur_is_open = FALSE; + plan->cursor_at_end = FALSE; + + /* Calculate goodness for each index of the table */ + + index = dict_table_get_first_index(table); + best_index = index; /* Eliminate compiler warning */ + best_goodness = 0; + + /* should be do ... until ? comment by Jani */ + while (index) { + goodness = opt_calc_index_goodness(index, sel_node, i, + index_plan, &last_op); + if (goodness > best_goodness) { + + best_index = index; + best_goodness = goodness; + n_fields = opt_calc_n_fields_from_goodness(goodness); + + ut_memcpy(best_index_plan, index_plan, + n_fields * sizeof(void*)); + best_last_op = last_op; + } + + index = dict_table_get_next_index(index); + } + + plan->index = best_index; + + n_fields = opt_calc_n_fields_from_goodness(best_goodness); + + if (n_fields == 0) { + plan->tuple = NULL; + plan->n_exact_match = 0; + } else { + plan->tuple = dtuple_create(pars_sym_tab_global->heap, + n_fields); + dict_index_copy_types(plan->tuple, plan->index, n_fields); + + plan->tuple_exps = mem_heap_alloc(pars_sym_tab_global->heap, + n_fields * sizeof(void*)); + + ut_memcpy(plan->tuple_exps, best_index_plan, + n_fields * sizeof(void*)); + if (best_last_op == '=') { + plan->n_exact_match = n_fields; + } else { + plan->n_exact_match = n_fields - 1; + } + + plan->mode = opt_op_to_search_mode(sel_node->asc, + best_last_op); + } + + if (dict_index_is_clust(best_index) + && (plan->n_exact_match >= dict_index_get_n_unique(best_index))) { + + plan->unique_search = TRUE; + } else { + plan->unique_search = FALSE; + } + + plan->old_vers_heap = NULL; + + btr_pcur_init(&(plan->pcur)); + btr_pcur_init(&(plan->clust_pcur)); +} + +/*********************************************************************** +Looks at a comparison condition and decides if it can, and need, be tested for +a table AFTER the table has been accessed. */ +static +ulint +opt_classify_comparison( +/*====================*/ + /* out: OPT_NOT_COND if not for this + table, else OPT_END_COND, + OPT_TEST_COND, or OPT_SCROLL_COND, + where the last means that the + condition need not be tested, except + when scroll cursors are used */ + sel_node_t* sel_node, /* in: select node */ + ulint i, /* in: ith table in the join */ + func_node_t* cond) /* in: comparison condition */ +{ + plan_t* plan; + ulint n_fields; + ulint op; + ulint j; + + ut_ad(cond && sel_node); + + plan = sel_node_get_nth_plan(sel_node, i); + + /* Check if the condition is determined after the ith table has been + accessed, but not after the i - 1:th */ + + if (!opt_check_exp_determined_before(cond, sel_node, i + 1)) { + + return(OPT_NOT_COND); + } + + if ((i > 0) && opt_check_exp_determined_before(cond, sel_node, i)) { + + return(OPT_NOT_COND); + } + + /* If the condition is an exact match condition used in constructing + the search tuple, it is classified as OPT_END_COND */ + + if (plan->tuple) { + n_fields = dtuple_get_n_fields(plan->tuple); + } else { + n_fields = 0; + } + + for (j = 0; j < plan->n_exact_match; j++) { + + if (opt_is_arg(plan->tuple_exps[j], cond)) { + + return(OPT_END_COND); + } + } + + /* If the condition is an non-exact match condition used in + constructing the search tuple, it is classified as OPT_SCROLL_COND. + When the cursor is positioned, and if a non-scroll cursor is used, + there is no need to test this condition; if a scroll cursor is used + the testing is necessary when the cursor is reversed. */ + + if ((n_fields > plan->n_exact_match) + && opt_is_arg(plan->tuple_exps[n_fields - 1], cond)) { + + return(OPT_SCROLL_COND); + } + + /* If the condition is a non-exact match condition on the first field + in index for which there is no exact match, and it limits the search + range from the opposite side of the search tuple already BEFORE we + access the table, it is classified as OPT_END_COND */ + + if ((dict_index_get_n_fields(plan->index) > plan->n_exact_match) + && opt_look_for_col_in_comparison_before( + OPT_COMPARISON, + dict_index_get_nth_col_no(plan->index, + plan->n_exact_match), + cond, sel_node, i, &op)) { + + if (sel_node->asc && ((op == '<') || (op == PARS_LE_TOKEN))) { + + return(OPT_END_COND); + } + + if (!sel_node->asc && ((op == '>') || (op == PARS_GE_TOKEN))) { + + return(OPT_END_COND); + } + } + + /* Otherwise, cond is classified as OPT_TEST_COND */ + + return(OPT_TEST_COND); +} + +/*********************************************************************** +Recursively looks for test conditions for a table in a join. */ +static +void +opt_find_test_conds( +/*================*/ + sel_node_t* sel_node, /* in: select node */ + ulint i, /* in: ith table in the join */ + func_node_t* cond) /* in: conjunction of search + conditions or NULL */ +{ + func_node_t* new_cond; + ulint class; + plan_t* plan; + + if (cond == NULL) { + + return; + } + + if (cond->func == PARS_AND_TOKEN) { + new_cond = cond->args; + + opt_find_test_conds(sel_node, i, new_cond); + + new_cond = que_node_get_next(new_cond); + + opt_find_test_conds(sel_node, i, new_cond); + + return; + } + + plan = sel_node_get_nth_plan(sel_node, i); + + class = opt_classify_comparison(sel_node, i, cond); + + if (class == OPT_END_COND) { + UT_LIST_ADD_LAST(cond_list, plan->end_conds, cond); + + } else if (class == OPT_TEST_COND) { + UT_LIST_ADD_LAST(cond_list, plan->other_conds, cond); + + } +} + +/*********************************************************************** +Normalizes a list of comparison conditions so that a column of the table +appears on the left side of the comparison if possible. This is accomplished +by switching the arguments of the operator. */ +static +void +opt_normalize_cmp_conds( +/*====================*/ + func_node_t* cond, /* in: first in a list of comparison + conditions, or NULL */ + dict_table_t* table) /* in: table */ +{ + que_node_t* arg1; + que_node_t* arg2; + sym_node_t* sym_node; + + while (cond) { + arg1 = cond->args; + arg2 = que_node_get_next(arg1); + + if (que_node_get_type(arg2) == QUE_NODE_SYMBOL) { + + sym_node = arg2; + + if ((sym_node->token_type == SYM_COLUMN) + && (sym_node->table == table)) { + + /* Switch the order of the arguments */ + + cond->args = arg2; + que_node_list_add_last(NULL, arg2); + que_node_list_add_last(arg2, arg1); + + /* Invert the operator */ + cond->func = opt_invert_cmp_op(cond->func); + } + } + + cond = UT_LIST_GET_NEXT(cond_list, cond); + } +} + +/*********************************************************************** +Finds out the search condition conjuncts we can, and need, to test as the ith +table in a join is accessed. The search tuple can eliminate the need to test +some conjuncts. */ +static +void +opt_determine_and_normalize_test_conds( +/*===================================*/ + sel_node_t* sel_node, /* in: select node */ + ulint i) /* in: ith table in the join */ +{ + plan_t* plan; + + plan = sel_node_get_nth_plan(sel_node, i); + + UT_LIST_INIT(plan->end_conds); + UT_LIST_INIT(plan->other_conds); + + /* Recursively go through the conjuncts and classify them */ + + opt_find_test_conds(sel_node, i, sel_node->search_cond); + + opt_normalize_cmp_conds(UT_LIST_GET_FIRST(plan->end_conds), + plan->table); + + ut_a(UT_LIST_GET_LEN(plan->end_conds) >= plan->n_exact_match); +} + +/*********************************************************************** +Looks for occurrences of the columns of the table in the query subgraph and +adds them to the list of columns if an occurrence of the same column does not +already exist in the list. If the column is already in the list, puts a value +indirection to point to the occurrence in the column list, except if the +column occurrence we are looking at is in the column list, in which case +nothing is done. */ +UNIV_INTERN +void +opt_find_all_cols( +/*==============*/ + ibool copy_val, /* in: if TRUE, new found columns are + added as columns to copy */ + dict_index_t* index, /* in: index of the table to use */ + sym_node_list_t* col_list, /* in: base node of a list where + to add new found columns */ + plan_t* plan, /* in: plan or NULL */ + que_node_t* exp) /* in: expression or condition or + NULL */ +{ + func_node_t* func_node; + que_node_t* arg; + sym_node_t* sym_node; + sym_node_t* col_node; + ulint col_pos; + + if (exp == NULL) { + + return; + } + + if (que_node_get_type(exp) == QUE_NODE_FUNC) { + func_node = exp; + + arg = func_node->args; + + while (arg) { + opt_find_all_cols(copy_val, index, col_list, plan, + arg); + arg = que_node_get_next(arg); + } + + return; + } + + ut_a(que_node_get_type(exp) == QUE_NODE_SYMBOL); + + sym_node = exp; + + if (sym_node->token_type != SYM_COLUMN) { + + return; + } + + if (sym_node->table != index->table) { + + return; + } + + /* Look for an occurrence of the same column in the plan column + list */ + + col_node = UT_LIST_GET_FIRST(*col_list); + + while (col_node) { + if (col_node->col_no == sym_node->col_no) { + + if (col_node == sym_node) { + /* sym_node was already in a list: do + nothing */ + + return; + } + + /* Put an indirection */ + sym_node->indirection = col_node; + sym_node->alias = col_node; + + return; + } + + col_node = UT_LIST_GET_NEXT(col_var_list, col_node); + } + + /* The same column did not occur in the list: add it */ + + UT_LIST_ADD_LAST(col_var_list, *col_list, sym_node); + + sym_node->copy_val = copy_val; + + /* Fill in the field_no fields in sym_node */ + + sym_node->field_nos[SYM_CLUST_FIELD_NO] = dict_index_get_nth_col_pos( + dict_table_get_first_index(index->table), sym_node->col_no); + if (!dict_index_is_clust(index)) { + + ut_a(plan); + + col_pos = dict_index_get_nth_col_pos(index, sym_node->col_no); + + if (col_pos == ULINT_UNDEFINED) { + + plan->must_get_clust = TRUE; + } + + sym_node->field_nos[SYM_SEC_FIELD_NO] = col_pos; + } +} + +/*********************************************************************** +Looks for occurrences of the columns of the table in conditions which are +not yet determined AFTER the join operation has fetched a row in the ith +table. The values for these column must be copied to dynamic memory for +later use. */ +static +void +opt_find_copy_cols( +/*===============*/ + sel_node_t* sel_node, /* in: select node */ + ulint i, /* in: ith table in the join */ + func_node_t* search_cond) /* in: search condition or NULL */ +{ + func_node_t* new_cond; + plan_t* plan; + + if (search_cond == NULL) { + + return; + } + + ut_ad(que_node_get_type(search_cond) == QUE_NODE_FUNC); + + if (search_cond->func == PARS_AND_TOKEN) { + new_cond = search_cond->args; + + opt_find_copy_cols(sel_node, i, new_cond); + + new_cond = que_node_get_next(new_cond); + + opt_find_copy_cols(sel_node, i, new_cond); + + return; + } + + if (!opt_check_exp_determined_before(search_cond, sel_node, i + 1)) { + + /* Any ith table columns occurring in search_cond should be + copied, as this condition cannot be tested already on the + fetch from the ith table */ + + plan = sel_node_get_nth_plan(sel_node, i); + + opt_find_all_cols(TRUE, plan->index, &(plan->columns), plan, + search_cond); + } +} + +/*********************************************************************** +Classifies the table columns according to whether we use the column only while +holding the latch on the page, or whether we have to copy the column value to +dynamic memory. Puts the first occurrence of a column to either list in the +plan node, and puts indirections to later occurrences of the column. */ +static +void +opt_classify_cols( +/*==============*/ + sel_node_t* sel_node, /* in: select node */ + ulint i) /* in: ith table in the join */ +{ + plan_t* plan; + que_node_t* exp; + + plan = sel_node_get_nth_plan(sel_node, i); + + /* The final value of the following field will depend on the + environment of the select statement: */ + + plan->must_get_clust = FALSE; + + UT_LIST_INIT(plan->columns); + + /* All select list columns should be copied: therefore TRUE as the + first argument */ + + exp = sel_node->select_list; + + while (exp) { + opt_find_all_cols(TRUE, plan->index, &(plan->columns), plan, + exp); + exp = que_node_get_next(exp); + } + + opt_find_copy_cols(sel_node, i, sel_node->search_cond); + + /* All remaining columns in the search condition are temporary + columns: therefore FALSE */ + + opt_find_all_cols(FALSE, plan->index, &(plan->columns), plan, + sel_node->search_cond); +} + +/*********************************************************************** +Fills in the info in plan which is used in accessing a clustered index +record. The columns must already be classified for the plan node. */ +static +void +opt_clust_access( +/*=============*/ + sel_node_t* sel_node, /* in: select node */ + ulint n) /* in: nth table in select */ +{ + plan_t* plan; + dict_table_t* table; + dict_index_t* clust_index; + dict_index_t* index; + mem_heap_t* heap; + ulint n_fields; + ulint pos; + ulint i; + + plan = sel_node_get_nth_plan(sel_node, n); + + index = plan->index; + + /* The final value of the following field depends on the environment + of the select statement: */ + + plan->no_prefetch = FALSE; + + if (dict_index_is_clust(index)) { + plan->clust_map = NULL; + plan->clust_ref = NULL; + + return; + } + + table = index->table; + + clust_index = dict_table_get_first_index(table); + + n_fields = dict_index_get_n_unique(clust_index); + + heap = pars_sym_tab_global->heap; + + plan->clust_ref = dtuple_create(heap, n_fields); + + dict_index_copy_types(plan->clust_ref, clust_index, n_fields); + + plan->clust_map = mem_heap_alloc(heap, n_fields * sizeof(ulint)); + + for (i = 0; i < n_fields; i++) { + pos = dict_index_get_nth_field_pos(index, clust_index, i); + + ut_a(pos != ULINT_UNDEFINED); + + /* We optimize here only queries to InnoDB's internal system + tables, and they should not contain column prefix indexes. */ + + if (dict_index_get_nth_field(index, pos)->prefix_len != 0 + || dict_index_get_nth_field(clust_index, i) + ->prefix_len != 0) { + fprintf(stderr, + "InnoDB: Error in pars0opt.c:" + " table %s has prefix_len != 0\n", + index->table_name); + } + + *(plan->clust_map + i) = pos; + + ut_ad(pos != ULINT_UNDEFINED); + } +} + +/*********************************************************************** +Optimizes a select. Decides which indexes to tables to use. The tables +are accessed in the order that they were written to the FROM part in the +select statement. */ +UNIV_INTERN +void +opt_search_plan( +/*============*/ + sel_node_t* sel_node) /* in: parsed select node */ +{ + sym_node_t* table_node; + dict_table_t* table; + order_node_t* order_by; + ulint i; + + sel_node->plans = mem_heap_alloc(pars_sym_tab_global->heap, + sel_node->n_tables * sizeof(plan_t)); + + /* Analyze the search condition to find out what we know at each + join stage about the conditions that the columns of a table should + satisfy */ + + table_node = sel_node->table_list; + + if (sel_node->order_by == NULL) { + sel_node->asc = TRUE; + } else { + order_by = sel_node->order_by; + + sel_node->asc = order_by->asc; + } + + for (i = 0; i < sel_node->n_tables; i++) { + + table = table_node->table; + + /* Choose index through which to access the table */ + + opt_search_plan_for_table(sel_node, i, table); + + /* Determine the search condition conjuncts we can test at + this table; normalize the end conditions */ + + opt_determine_and_normalize_test_conds(sel_node, i); + + table_node = que_node_get_next(table_node); + } + + table_node = sel_node->table_list; + + for (i = 0; i < sel_node->n_tables; i++) { + + /* Classify the table columns into those we only need to access + but not copy, and to those we must copy to dynamic memory */ + + opt_classify_cols(sel_node, i); + + /* Calculate possible info for accessing the clustered index + record */ + + opt_clust_access(sel_node, i); + + table_node = que_node_get_next(table_node); + } + + /* Check that the plan obeys a possible order-by clause: if not, + an assertion error occurs */ + + opt_check_order_by(sel_node); + +#ifdef UNIV_SQL_DEBUG + opt_print_query_plan(sel_node); +#endif +} + +/************************************************************************ +Prints info of a query plan. */ +UNIV_INTERN +void +opt_print_query_plan( +/*=================*/ + sel_node_t* sel_node) /* in: select node */ +{ + plan_t* plan; + ulint n_fields; + ulint i; + + fputs("QUERY PLAN FOR A SELECT NODE\n", stderr); + + fputs(sel_node->asc ? "Asc. search; " : "Desc. search; ", stderr); + + if (sel_node->set_x_locks) { + fputs("sets row x-locks; ", stderr); + ut_a(sel_node->row_lock_mode == LOCK_X); + ut_a(!sel_node->consistent_read); + } else if (sel_node->consistent_read) { + fputs("consistent read; ", stderr); + } else { + ut_a(sel_node->row_lock_mode == LOCK_S); + fputs("sets row s-locks; ", stderr); + } + + putc('\n', stderr); + + for (i = 0; i < sel_node->n_tables; i++) { + plan = sel_node_get_nth_plan(sel_node, i); + + if (plan->tuple) { + n_fields = dtuple_get_n_fields(plan->tuple); + } else { + n_fields = 0; + } + + fputs("Table ", stderr); + dict_index_name_print(stderr, NULL, plan->index); + fprintf(stderr,"; exact m. %lu, match %lu, end conds %lu\n", + (unsigned long) plan->n_exact_match, + (unsigned long) n_fields, + (unsigned long) UT_LIST_GET_LEN(plan->end_conds)); + } +} === added file 'storage/xtradb/pars/pars0pars.c' --- a/storage/xtradb/pars/pars0pars.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/pars/pars0pars.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,2205 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +SQL parser + +Created 11/19/1996 Heikki Tuuri +*******************************************************/ + +/* Historical note: Innobase executed its first SQL string (CREATE TABLE) +on 1/27/1998 */ + +#include "pars0pars.h" + +#ifdef UNIV_NONINL +#include "pars0pars.ic" +#endif + +#include "row0sel.h" +#include "row0ins.h" +#include "row0upd.h" +#include "dict0dict.h" +#include "dict0mem.h" +#include "dict0crea.h" +#include "que0que.h" +#include "pars0grm.h" +#include "pars0opt.h" +#include "data0data.h" +#include "data0type.h" +#include "trx0trx.h" +#include "trx0roll.h" +#include "lock0lock.h" +#include "eval0eval.h" + +#ifdef UNIV_SQL_DEBUG +/* If the following is set TRUE, the lexer will print the SQL string +as it tokenizes it */ + +ibool pars_print_lexed = FALSE; +#endif /* UNIV_SQL_DEBUG */ + +/* Global variable used while parsing a single procedure or query : the code is +NOT re-entrant */ +UNIV_INTERN sym_tab_t* pars_sym_tab_global; + +/* Global variables used to denote certain reserved words, used in +constructing the parsing tree */ + +UNIV_INTERN pars_res_word_t pars_to_char_token = {PARS_TO_CHAR_TOKEN}; +UNIV_INTERN pars_res_word_t pars_to_number_token = {PARS_TO_NUMBER_TOKEN}; +UNIV_INTERN pars_res_word_t pars_to_binary_token = {PARS_TO_BINARY_TOKEN}; +UNIV_INTERN pars_res_word_t pars_binary_to_number_token = {PARS_BINARY_TO_NUMBER_TOKEN}; +UNIV_INTERN pars_res_word_t pars_substr_token = {PARS_SUBSTR_TOKEN}; +UNIV_INTERN pars_res_word_t pars_replstr_token = {PARS_REPLSTR_TOKEN}; +UNIV_INTERN pars_res_word_t pars_concat_token = {PARS_CONCAT_TOKEN}; +UNIV_INTERN pars_res_word_t pars_instr_token = {PARS_INSTR_TOKEN}; +UNIV_INTERN pars_res_word_t pars_length_token = {PARS_LENGTH_TOKEN}; +UNIV_INTERN pars_res_word_t pars_sysdate_token = {PARS_SYSDATE_TOKEN}; +UNIV_INTERN pars_res_word_t pars_printf_token = {PARS_PRINTF_TOKEN}; +UNIV_INTERN pars_res_word_t pars_assert_token = {PARS_ASSERT_TOKEN}; +UNIV_INTERN pars_res_word_t pars_rnd_token = {PARS_RND_TOKEN}; +UNIV_INTERN pars_res_word_t pars_rnd_str_token = {PARS_RND_STR_TOKEN}; +UNIV_INTERN pars_res_word_t pars_count_token = {PARS_COUNT_TOKEN}; +UNIV_INTERN pars_res_word_t pars_sum_token = {PARS_SUM_TOKEN}; +UNIV_INTERN pars_res_word_t pars_distinct_token = {PARS_DISTINCT_TOKEN}; +UNIV_INTERN pars_res_word_t pars_binary_token = {PARS_BINARY_TOKEN}; +UNIV_INTERN pars_res_word_t pars_blob_token = {PARS_BLOB_TOKEN}; +UNIV_INTERN pars_res_word_t pars_int_token = {PARS_INT_TOKEN}; +UNIV_INTERN pars_res_word_t pars_char_token = {PARS_CHAR_TOKEN}; +UNIV_INTERN pars_res_word_t pars_float_token = {PARS_FLOAT_TOKEN}; +UNIV_INTERN pars_res_word_t pars_update_token = {PARS_UPDATE_TOKEN}; +UNIV_INTERN pars_res_word_t pars_asc_token = {PARS_ASC_TOKEN}; +UNIV_INTERN pars_res_word_t pars_desc_token = {PARS_DESC_TOKEN}; +UNIV_INTERN pars_res_word_t pars_open_token = {PARS_OPEN_TOKEN}; +UNIV_INTERN pars_res_word_t pars_close_token = {PARS_CLOSE_TOKEN}; +UNIV_INTERN pars_res_word_t pars_share_token = {PARS_SHARE_TOKEN}; +UNIV_INTERN pars_res_word_t pars_unique_token = {PARS_UNIQUE_TOKEN}; +UNIV_INTERN pars_res_word_t pars_clustered_token = {PARS_CLUSTERED_TOKEN}; + +/* Global variable used to denote the '*' in SELECT * FROM.. */ +#define PARS_STAR_DENOTER 12345678 +UNIV_INTERN ulint pars_star_denoter = PARS_STAR_DENOTER; + + +/************************************************************************* +Determines the class of a function code. */ +static +ulint +pars_func_get_class( +/*================*/ + /* out: function class: PARS_FUNC_ARITH, ... */ + int func) /* in: function code: '=', PARS_GE_TOKEN, ... */ +{ + switch (func) { + case '+': case '-': case '*': case '/': + return(PARS_FUNC_ARITH); + + case '=': case '<': case '>': + case PARS_GE_TOKEN: case PARS_LE_TOKEN: case PARS_NE_TOKEN: + return(PARS_FUNC_CMP); + + case PARS_AND_TOKEN: case PARS_OR_TOKEN: case PARS_NOT_TOKEN: + return(PARS_FUNC_LOGICAL); + + case PARS_COUNT_TOKEN: case PARS_SUM_TOKEN: + return(PARS_FUNC_AGGREGATE); + + case PARS_TO_CHAR_TOKEN: + case PARS_TO_NUMBER_TOKEN: + case PARS_TO_BINARY_TOKEN: + case PARS_BINARY_TO_NUMBER_TOKEN: + case PARS_SUBSTR_TOKEN: + case PARS_CONCAT_TOKEN: + case PARS_LENGTH_TOKEN: + case PARS_INSTR_TOKEN: + case PARS_SYSDATE_TOKEN: + case PARS_NOTFOUND_TOKEN: + case PARS_PRINTF_TOKEN: + case PARS_ASSERT_TOKEN: + case PARS_RND_TOKEN: + case PARS_RND_STR_TOKEN: + case PARS_REPLSTR_TOKEN: + return(PARS_FUNC_PREDEFINED); + + default: + return(PARS_FUNC_OTHER); + } +} + +/************************************************************************* +Parses an operator or predefined function expression. */ +static +func_node_t* +pars_func_low( +/*==========*/ + /* out, own: function node in a query tree */ + int func, /* in: function token code */ + que_node_t* arg) /* in: first argument in the argument list */ +{ + func_node_t* node; + + node = mem_heap_alloc(pars_sym_tab_global->heap, sizeof(func_node_t)); + + node->common.type = QUE_NODE_FUNC; + dfield_set_data(&(node->common.val), NULL, 0); + node->common.val_buf_size = 0; + + node->func = func; + + node->class = pars_func_get_class(func); + + node->args = arg; + + UT_LIST_ADD_LAST(func_node_list, pars_sym_tab_global->func_node_list, + node); + return(node); +} + +/************************************************************************* +Parses a function expression. */ +UNIV_INTERN +func_node_t* +pars_func( +/*======*/ + /* out, own: function node in a query tree */ + que_node_t* res_word,/* in: function name reserved word */ + que_node_t* arg) /* in: first argument in the argument list */ +{ + return(pars_func_low(((pars_res_word_t*)res_word)->code, arg)); +} + +/************************************************************************* +Parses an operator expression. */ +UNIV_INTERN +func_node_t* +pars_op( +/*====*/ + /* out, own: function node in a query tree */ + int func, /* in: operator token code */ + que_node_t* arg1, /* in: first argument */ + que_node_t* arg2) /* in: second argument or NULL for an unary + operator */ +{ + que_node_list_add_last(NULL, arg1); + + if (arg2) { + que_node_list_add_last(arg1, arg2); + } + + return(pars_func_low(func, arg1)); +} + +/************************************************************************* +Parses an ORDER BY clause. Order by a single column only is supported. */ +UNIV_INTERN +order_node_t* +pars_order_by( +/*==========*/ + /* out, own: order-by node in a query tree */ + sym_node_t* column, /* in: column name */ + pars_res_word_t* asc) /* in: &pars_asc_token or pars_desc_token */ +{ + order_node_t* node; + + node = mem_heap_alloc(pars_sym_tab_global->heap, sizeof(order_node_t)); + + node->common.type = QUE_NODE_ORDER; + + node->column = column; + + if (asc == &pars_asc_token) { + node->asc = TRUE; + } else { + ut_a(asc == &pars_desc_token); + node->asc = FALSE; + } + + return(node); +} + +/************************************************************************* +Determine if a data type is a built-in string data type of the InnoDB +SQL parser. */ +static +ibool +pars_is_string_type( +/*================*/ + /* out: TRUE if string data type */ + ulint mtype) /* in: main data type */ +{ + switch (mtype) { + case DATA_VARCHAR: case DATA_CHAR: + case DATA_FIXBINARY: case DATA_BINARY: + return(TRUE); + } + + return(FALSE); +} + +/************************************************************************* +Resolves the data type of a function in an expression. The argument data +types must already be resolved. */ +static +void +pars_resolve_func_data_type( +/*========================*/ + func_node_t* node) /* in: function node */ +{ + que_node_t* arg; + + ut_a(que_node_get_type(node) == QUE_NODE_FUNC); + + arg = node->args; + + switch (node->func) { + case PARS_SUM_TOKEN: + case '+': case '-': case '*': case '/': + /* Inherit the data type from the first argument (which must + not be the SQL null literal whose type is DATA_ERROR) */ + + dtype_copy(que_node_get_data_type(node), + que_node_get_data_type(arg)); + + ut_a(dtype_get_mtype(que_node_get_data_type(node)) + == DATA_INT); + break; + + case PARS_COUNT_TOKEN: + ut_a(arg); + dtype_set(que_node_get_data_type(node), DATA_INT, 0, 4); + break; + + case PARS_TO_CHAR_TOKEN: + case PARS_RND_STR_TOKEN: + ut_a(dtype_get_mtype(que_node_get_data_type(arg)) == DATA_INT); + dtype_set(que_node_get_data_type(node), DATA_VARCHAR, + DATA_ENGLISH, 0); + break; + + case PARS_TO_BINARY_TOKEN: + if (dtype_get_mtype(que_node_get_data_type(arg)) == DATA_INT) { + dtype_set(que_node_get_data_type(node), DATA_VARCHAR, + DATA_ENGLISH, 0); + } else { + dtype_set(que_node_get_data_type(node), DATA_BINARY, + 0, 0); + } + break; + + case PARS_TO_NUMBER_TOKEN: + case PARS_BINARY_TO_NUMBER_TOKEN: + case PARS_LENGTH_TOKEN: + case PARS_INSTR_TOKEN: + ut_a(pars_is_string_type(que_node_get_data_type(arg)->mtype)); + dtype_set(que_node_get_data_type(node), DATA_INT, 0, 4); + break; + + case PARS_SYSDATE_TOKEN: + ut_a(arg == NULL); + dtype_set(que_node_get_data_type(node), DATA_INT, 0, 4); + break; + + case PARS_SUBSTR_TOKEN: + case PARS_CONCAT_TOKEN: + ut_a(pars_is_string_type(que_node_get_data_type(arg)->mtype)); + dtype_set(que_node_get_data_type(node), DATA_VARCHAR, + DATA_ENGLISH, 0); + break; + + case '>': case '<': case '=': + case PARS_GE_TOKEN: + case PARS_LE_TOKEN: + case PARS_NE_TOKEN: + case PARS_AND_TOKEN: + case PARS_OR_TOKEN: + case PARS_NOT_TOKEN: + case PARS_NOTFOUND_TOKEN: + + /* We currently have no iboolean type: use integer type */ + dtype_set(que_node_get_data_type(node), DATA_INT, 0, 4); + break; + + case PARS_RND_TOKEN: + ut_a(dtype_get_mtype(que_node_get_data_type(arg)) == DATA_INT); + dtype_set(que_node_get_data_type(node), DATA_INT, 0, 4); + break; + + default: + ut_error; + } +} + +/************************************************************************* +Resolves the meaning of variables in an expression and the data types of +functions. It is an error if some identifier cannot be resolved here. */ +static +void +pars_resolve_exp_variables_and_types( +/*=================================*/ + sel_node_t* select_node, /* in: select node or NULL; if + this is not NULL then the variable + sym nodes are added to the + copy_variables list of select_node */ + que_node_t* exp_node) /* in: expression */ +{ + func_node_t* func_node; + que_node_t* arg; + sym_node_t* sym_node; + sym_node_t* node; + + ut_a(exp_node); + + if (que_node_get_type(exp_node) == QUE_NODE_FUNC) { + func_node = exp_node; + + arg = func_node->args; + + while (arg) { + pars_resolve_exp_variables_and_types(select_node, arg); + + arg = que_node_get_next(arg); + } + + pars_resolve_func_data_type(func_node); + + return; + } + + ut_a(que_node_get_type(exp_node) == QUE_NODE_SYMBOL); + + sym_node = exp_node; + + if (sym_node->resolved) { + + return; + } + + /* Not resolved yet: look in the symbol table for a variable + or a cursor or a function with the same name */ + + node = UT_LIST_GET_FIRST(pars_sym_tab_global->sym_list); + + while (node) { + if (node->resolved + && ((node->token_type == SYM_VAR) + || (node->token_type == SYM_CURSOR) + || (node->token_type == SYM_FUNCTION)) + && node->name + && (sym_node->name_len == node->name_len) + && (ut_memcmp(sym_node->name, node->name, + node->name_len) == 0)) { + + /* Found a variable or a cursor declared with + the same name */ + + break; + } + + node = UT_LIST_GET_NEXT(sym_list, node); + } + + if (!node) { + fprintf(stderr, "PARSER ERROR: Unresolved identifier %s\n", + sym_node->name); + } + + ut_a(node); + + sym_node->resolved = TRUE; + sym_node->token_type = SYM_IMPLICIT_VAR; + sym_node->alias = node; + sym_node->indirection = node; + + if (select_node) { + UT_LIST_ADD_LAST(col_var_list, select_node->copy_variables, + sym_node); + } + + dfield_set_type(que_node_get_val(sym_node), + que_node_get_data_type(node)); +} + +/************************************************************************* +Resolves the meaning of variables in an expression list. It is an error if +some identifier cannot be resolved here. Resolves also the data types of +functions. */ +static +void +pars_resolve_exp_list_variables_and_types( +/*======================================*/ + sel_node_t* select_node, /* in: select node or NULL */ + que_node_t* exp_node) /* in: expression list first node, or + NULL */ +{ + while (exp_node) { + pars_resolve_exp_variables_and_types(select_node, exp_node); + + exp_node = que_node_get_next(exp_node); + } +} + +/************************************************************************* +Resolves the columns in an expression. */ +static +void +pars_resolve_exp_columns( +/*=====================*/ + sym_node_t* table_node, /* in: first node in a table list */ + que_node_t* exp_node) /* in: expression */ +{ + func_node_t* func_node; + que_node_t* arg; + sym_node_t* sym_node; + dict_table_t* table; + sym_node_t* t_node; + ulint n_cols; + ulint i; + + ut_a(exp_node); + + if (que_node_get_type(exp_node) == QUE_NODE_FUNC) { + func_node = exp_node; + + arg = func_node->args; + + while (arg) { + pars_resolve_exp_columns(table_node, arg); + + arg = que_node_get_next(arg); + } + + return; + } + + ut_a(que_node_get_type(exp_node) == QUE_NODE_SYMBOL); + + sym_node = exp_node; + + if (sym_node->resolved) { + + return; + } + + /* Not resolved yet: look in the table list for a column with the + same name */ + + t_node = table_node; + + while (t_node) { + table = t_node->table; + + n_cols = dict_table_get_n_cols(table); + + for (i = 0; i < n_cols; i++) { + const dict_col_t* col + = dict_table_get_nth_col(table, i); + const char* col_name + = dict_table_get_col_name(table, i); + + if ((sym_node->name_len == ut_strlen(col_name)) + && (0 == ut_memcmp(sym_node->name, col_name, + sym_node->name_len))) { + /* Found */ + sym_node->resolved = TRUE; + sym_node->token_type = SYM_COLUMN; + sym_node->table = table; + sym_node->col_no = i; + sym_node->prefetch_buf = NULL; + + dict_col_copy_type( + col, + dfield_get_type(&sym_node + ->common.val)); + + return; + } + } + + t_node = que_node_get_next(t_node); + } +} + +/************************************************************************* +Resolves the meaning of columns in an expression list. */ +static +void +pars_resolve_exp_list_columns( +/*==========================*/ + sym_node_t* table_node, /* in: first node in a table list */ + que_node_t* exp_node) /* in: expression list first node, or + NULL */ +{ + while (exp_node) { + pars_resolve_exp_columns(table_node, exp_node); + + exp_node = que_node_get_next(exp_node); + } +} + +/************************************************************************* +Retrieves the table definition for a table name id. */ +static +void +pars_retrieve_table_def( +/*====================*/ + sym_node_t* sym_node) /* in: table node */ +{ + const char* table_name; + + ut_a(sym_node); + ut_a(que_node_get_type(sym_node) == QUE_NODE_SYMBOL); + + sym_node->resolved = TRUE; + sym_node->token_type = SYM_TABLE; + + table_name = (const char*) sym_node->name; + + sym_node->table = dict_table_get_low(table_name); + + ut_a(sym_node->table); +} + +/************************************************************************* +Retrieves the table definitions for a list of table name ids. */ +static +ulint +pars_retrieve_table_list_defs( +/*==========================*/ + /* out: number of tables */ + sym_node_t* sym_node) /* in: first table node in list */ +{ + ulint count = 0; + + if (sym_node == NULL) { + + return(count); + } + + while (sym_node) { + pars_retrieve_table_def(sym_node); + + count++; + + sym_node = que_node_get_next(sym_node); + } + + return(count); +} + +/************************************************************************* +Adds all columns to the select list if the query is SELECT * FROM ... */ +static +void +pars_select_all_columns( +/*====================*/ + sel_node_t* select_node) /* in: select node already containing + the table list */ +{ + sym_node_t* col_node; + sym_node_t* table_node; + dict_table_t* table; + ulint i; + + select_node->select_list = NULL; + + table_node = select_node->table_list; + + while (table_node) { + table = table_node->table; + + for (i = 0; i < dict_table_get_n_user_cols(table); i++) { + const char* col_name = dict_table_get_col_name( + table, i); + + col_node = sym_tab_add_id(pars_sym_tab_global, + (byte*)col_name, + ut_strlen(col_name)); + + select_node->select_list = que_node_list_add_last( + select_node->select_list, col_node); + } + + table_node = que_node_get_next(table_node); + } +} + +/************************************************************************* +Parses a select list; creates a query graph node for the whole SELECT +statement. */ +UNIV_INTERN +sel_node_t* +pars_select_list( +/*=============*/ + /* out, own: select node in a query + tree */ + que_node_t* select_list, /* in: select list */ + sym_node_t* into_list) /* in: variables list or NULL */ +{ + sel_node_t* node; + + node = sel_node_create(pars_sym_tab_global->heap); + + node->select_list = select_list; + node->into_list = into_list; + + pars_resolve_exp_list_variables_and_types(NULL, into_list); + + return(node); +} + +/************************************************************************* +Checks if the query is an aggregate query, in which case the selct list must +contain only aggregate function items. */ +static +void +pars_check_aggregate( +/*=================*/ + sel_node_t* select_node) /* in: select node already containing + the select list */ +{ + que_node_t* exp_node; + func_node_t* func_node; + ulint n_nodes = 0; + ulint n_aggregate_nodes = 0; + + exp_node = select_node->select_list; + + while (exp_node) { + + n_nodes++; + + if (que_node_get_type(exp_node) == QUE_NODE_FUNC) { + + func_node = exp_node; + + if (func_node->class == PARS_FUNC_AGGREGATE) { + + n_aggregate_nodes++; + } + } + + exp_node = que_node_get_next(exp_node); + } + + if (n_aggregate_nodes > 0) { + ut_a(n_nodes == n_aggregate_nodes); + + select_node->is_aggregate = TRUE; + } else { + select_node->is_aggregate = FALSE; + } +} + +/************************************************************************* +Parses a select statement. */ +UNIV_INTERN +sel_node_t* +pars_select_statement( +/*==================*/ + /* out, own: select node in a query + tree */ + sel_node_t* select_node, /* in: select node already containing + the select list */ + sym_node_t* table_list, /* in: table list */ + que_node_t* search_cond, /* in: search condition or NULL */ + pars_res_word_t* for_update, /* in: NULL or &pars_update_token */ + pars_res_word_t* lock_shared, /* in: NULL or &pars_share_token */ + order_node_t* order_by) /* in: NULL or an order-by node */ +{ + select_node->state = SEL_NODE_OPEN; + + select_node->table_list = table_list; + select_node->n_tables = pars_retrieve_table_list_defs(table_list); + + if (select_node->select_list == &pars_star_denoter) { + + /* SELECT * FROM ... */ + pars_select_all_columns(select_node); + } + + if (select_node->into_list) { + ut_a(que_node_list_get_len(select_node->into_list) + == que_node_list_get_len(select_node->select_list)); + } + + UT_LIST_INIT(select_node->copy_variables); + + pars_resolve_exp_list_columns(table_list, select_node->select_list); + pars_resolve_exp_list_variables_and_types(select_node, + select_node->select_list); + pars_check_aggregate(select_node); + + select_node->search_cond = search_cond; + + if (search_cond) { + pars_resolve_exp_columns(table_list, search_cond); + pars_resolve_exp_variables_and_types(select_node, search_cond); + } + + if (for_update) { + ut_a(!lock_shared); + + select_node->set_x_locks = TRUE; + select_node->row_lock_mode = LOCK_X; + + select_node->consistent_read = FALSE; + select_node->read_view = NULL; + } else if (lock_shared){ + select_node->set_x_locks = FALSE; + select_node->row_lock_mode = LOCK_S; + + select_node->consistent_read = FALSE; + select_node->read_view = NULL; + } else { + select_node->set_x_locks = FALSE; + select_node->row_lock_mode = LOCK_S; + + select_node->consistent_read = TRUE; + } + + select_node->order_by = order_by; + + if (order_by) { + pars_resolve_exp_columns(table_list, order_by->column); + } + + /* The final value of the following fields depend on the environment + where the select statement appears: */ + + select_node->can_get_updated = FALSE; + select_node->explicit_cursor = NULL; + + opt_search_plan(select_node); + + return(select_node); +} + +/************************************************************************* +Parses a cursor declaration. */ +UNIV_INTERN +que_node_t* +pars_cursor_declaration( +/*====================*/ + /* out: sym_node */ + sym_node_t* sym_node, /* in: cursor id node in the symbol + table */ + sel_node_t* select_node) /* in: select node */ +{ + sym_node->resolved = TRUE; + sym_node->token_type = SYM_CURSOR; + sym_node->cursor_def = select_node; + + select_node->state = SEL_NODE_CLOSED; + select_node->explicit_cursor = sym_node; + + return(sym_node); +} + +/************************************************************************* +Parses a function declaration. */ +UNIV_INTERN +que_node_t* +pars_function_declaration( +/*======================*/ + /* out: sym_node */ + sym_node_t* sym_node) /* in: function id node in the symbol + table */ +{ + sym_node->resolved = TRUE; + sym_node->token_type = SYM_FUNCTION; + + /* Check that the function exists. */ + ut_a(pars_info_get_user_func(pars_sym_tab_global->info, + sym_node->name)); + + return(sym_node); +} + +/************************************************************************* +Parses a delete or update statement start. */ +UNIV_INTERN +upd_node_t* +pars_update_statement_start( +/*========================*/ + /* out, own: update node in a query + tree */ + ibool is_delete, /* in: TRUE if delete */ + sym_node_t* table_sym, /* in: table name node */ + col_assign_node_t* col_assign_list)/* in: column assignment list, NULL + if delete */ +{ + upd_node_t* node; + + node = upd_node_create(pars_sym_tab_global->heap); + + node->is_delete = is_delete; + + node->table_sym = table_sym; + node->col_assign_list = col_assign_list; + + return(node); +} + +/************************************************************************* +Parses a column assignment in an update. */ +UNIV_INTERN +col_assign_node_t* +pars_column_assignment( +/*===================*/ + /* out: column assignment node */ + sym_node_t* column, /* in: column to assign */ + que_node_t* exp) /* in: value to assign */ +{ + col_assign_node_t* node; + + node = mem_heap_alloc(pars_sym_tab_global->heap, + sizeof(col_assign_node_t)); + node->common.type = QUE_NODE_COL_ASSIGNMENT; + + node->col = column; + node->val = exp; + + return(node); +} + +/************************************************************************* +Processes an update node assignment list. */ +static +void +pars_process_assign_list( +/*=====================*/ + upd_node_t* node) /* in: update node */ +{ + col_assign_node_t* col_assign_list; + sym_node_t* table_sym; + col_assign_node_t* assign_node; + upd_field_t* upd_field; + dict_index_t* clust_index; + sym_node_t* col_sym; + ulint changes_ord_field; + ulint changes_field_size; + ulint n_assigns; + ulint i; + + table_sym = node->table_sym; + col_assign_list = node->col_assign_list; + clust_index = dict_table_get_first_index(node->table); + + assign_node = col_assign_list; + n_assigns = 0; + + while (assign_node) { + pars_resolve_exp_columns(table_sym, assign_node->col); + pars_resolve_exp_columns(table_sym, assign_node->val); + pars_resolve_exp_variables_and_types(NULL, assign_node->val); +#if 0 + ut_a(dtype_get_mtype( + dfield_get_type(que_node_get_val( + assign_node->col))) + == dtype_get_mtype( + dfield_get_type(que_node_get_val( + assign_node->val)))); +#endif + + /* Add to the update node all the columns found in assignment + values as columns to copy: therefore, TRUE */ + + opt_find_all_cols(TRUE, clust_index, &(node->columns), NULL, + assign_node->val); + n_assigns++; + + assign_node = que_node_get_next(assign_node); + } + + node->update = upd_create(n_assigns, pars_sym_tab_global->heap); + + assign_node = col_assign_list; + + changes_field_size = UPD_NODE_NO_SIZE_CHANGE; + + for (i = 0; i < n_assigns; i++) { + upd_field = upd_get_nth_field(node->update, i); + + col_sym = assign_node->col; + + upd_field_set_field_no(upd_field, dict_index_get_nth_col_pos( + clust_index, col_sym->col_no), + clust_index, NULL); + upd_field->exp = assign_node->val; + + if (!dict_col_get_fixed_size( + dict_index_get_nth_col(clust_index, + upd_field->field_no))) { + changes_field_size = 0; + } + + assign_node = que_node_get_next(assign_node); + } + + /* Find out if the update can modify an ordering field in any index */ + + changes_ord_field = UPD_NODE_NO_ORD_CHANGE; + + if (row_upd_changes_some_index_ord_field_binary(node->table, + node->update)) { + changes_ord_field = 0; + } + + node->cmpl_info = changes_ord_field | changes_field_size; +} + +/************************************************************************* +Parses an update or delete statement. */ +UNIV_INTERN +upd_node_t* +pars_update_statement( +/*==================*/ + /* out, own: update node in a query + tree */ + upd_node_t* node, /* in: update node */ + sym_node_t* cursor_sym, /* in: pointer to a cursor entry in + the symbol table or NULL */ + que_node_t* search_cond) /* in: search condition or NULL */ +{ + sym_node_t* table_sym; + sel_node_t* sel_node; + plan_t* plan; + + table_sym = node->table_sym; + + pars_retrieve_table_def(table_sym); + node->table = table_sym->table; + + UT_LIST_INIT(node->columns); + + /* Make the single table node into a list of table nodes of length 1 */ + + que_node_list_add_last(NULL, table_sym); + + if (cursor_sym) { + pars_resolve_exp_variables_and_types(NULL, cursor_sym); + + sel_node = cursor_sym->alias->cursor_def; + + node->searched_update = FALSE; + } else { + sel_node = pars_select_list(NULL, NULL); + + pars_select_statement(sel_node, table_sym, search_cond, NULL, + &pars_share_token, NULL); + node->searched_update = TRUE; + sel_node->common.parent = node; + } + + node->select = sel_node; + + ut_a(!node->is_delete || (node->col_assign_list == NULL)); + ut_a(node->is_delete || (node->col_assign_list != NULL)); + + if (node->is_delete) { + node->cmpl_info = 0; + } else { + pars_process_assign_list(node); + } + + if (node->searched_update) { + node->has_clust_rec_x_lock = TRUE; + sel_node->set_x_locks = TRUE; + sel_node->row_lock_mode = LOCK_X; + } else { + node->has_clust_rec_x_lock = sel_node->set_x_locks; + } + + ut_a(sel_node->n_tables == 1); + ut_a(sel_node->consistent_read == FALSE); + ut_a(sel_node->order_by == NULL); + ut_a(sel_node->is_aggregate == FALSE); + + sel_node->can_get_updated = TRUE; + + node->state = UPD_NODE_UPDATE_CLUSTERED; + + plan = sel_node_get_nth_plan(sel_node, 0); + + plan->no_prefetch = TRUE; + + if (!dict_index_is_clust(plan->index)) { + + plan->must_get_clust = TRUE; + + node->pcur = &(plan->clust_pcur); + } else { + node->pcur = &(plan->pcur); + } + + return(node); +} + +/************************************************************************* +Parses an insert statement. */ +UNIV_INTERN +ins_node_t* +pars_insert_statement( +/*==================*/ + /* out, own: update node in a query + tree */ + sym_node_t* table_sym, /* in: table name node */ + que_node_t* values_list, /* in: value expression list or NULL */ + sel_node_t* select) /* in: select condition or NULL */ +{ + ins_node_t* node; + dtuple_t* row; + ulint ins_type; + + ut_a(values_list || select); + ut_a(!values_list || !select); + + if (values_list) { + ins_type = INS_VALUES; + } else { + ins_type = INS_SEARCHED; + } + + pars_retrieve_table_def(table_sym); + + node = ins_node_create(ins_type, table_sym->table, + pars_sym_tab_global->heap); + + row = dtuple_create(pars_sym_tab_global->heap, + dict_table_get_n_cols(node->table)); + + dict_table_copy_types(row, table_sym->table); + + ins_node_set_new_row(node, row); + + node->select = select; + + if (select) { + select->common.parent = node; + + ut_a(que_node_list_get_len(select->select_list) + == dict_table_get_n_user_cols(table_sym->table)); + } + + node->values_list = values_list; + + if (node->values_list) { + pars_resolve_exp_list_variables_and_types(NULL, values_list); + + ut_a(que_node_list_get_len(values_list) + == dict_table_get_n_user_cols(table_sym->table)); + } + + return(node); +} + +/************************************************************************* +Set the type of a dfield. */ +static +void +pars_set_dfield_type( +/*=================*/ + dfield_t* dfield, /* in: dfield */ + pars_res_word_t* type, /* in: pointer to a type + token */ + ulint len, /* in: length, or 0 */ + ibool is_unsigned, /* in: if TRUE, column is + UNSIGNED. */ + ibool is_not_null) /* in: if TRUE, column is + NOT NULL. */ +{ + ulint flags = 0; + + if (is_not_null) { + flags |= DATA_NOT_NULL; + } + + if (is_unsigned) { + flags |= DATA_UNSIGNED; + } + + if (type == &pars_int_token) { + ut_a(len == 0); + + dtype_set(dfield_get_type(dfield), DATA_INT, flags, 4); + + } else if (type == &pars_char_token) { + ut_a(len == 0); + + dtype_set(dfield_get_type(dfield), DATA_VARCHAR, + DATA_ENGLISH | flags, 0); + } else if (type == &pars_binary_token) { + ut_a(len != 0); + + dtype_set(dfield_get_type(dfield), DATA_FIXBINARY, + DATA_BINARY_TYPE | flags, len); + } else if (type == &pars_blob_token) { + ut_a(len == 0); + + dtype_set(dfield_get_type(dfield), DATA_BLOB, + DATA_BINARY_TYPE | flags, 0); + } else { + ut_error; + } +} + +/************************************************************************* +Parses a variable declaration. */ +UNIV_INTERN +sym_node_t* +pars_variable_declaration( +/*======================*/ + /* out, own: symbol table node of type + SYM_VAR */ + sym_node_t* node, /* in: symbol table node allocated for the + id of the variable */ + pars_res_word_t* type) /* in: pointer to a type token */ +{ + node->resolved = TRUE; + node->token_type = SYM_VAR; + + node->param_type = PARS_NOT_PARAM; + + pars_set_dfield_type(que_node_get_val(node), type, 0, FALSE, FALSE); + + return(node); +} + +/************************************************************************* +Parses a procedure parameter declaration. */ +UNIV_INTERN +sym_node_t* +pars_parameter_declaration( +/*=======================*/ + /* out, own: symbol table node of type + SYM_VAR */ + sym_node_t* node, /* in: symbol table node allocated for the + id of the parameter */ + ulint param_type, + /* in: PARS_INPUT or PARS_OUTPUT */ + pars_res_word_t* type) /* in: pointer to a type token */ +{ + ut_a((param_type == PARS_INPUT) || (param_type == PARS_OUTPUT)); + + pars_variable_declaration(node, type); + + node->param_type = param_type; + + return(node); +} + +/************************************************************************* +Sets the parent field in a query node list. */ +static +void +pars_set_parent_in_list( +/*====================*/ + que_node_t* node_list, /* in: first node in a list */ + que_node_t* parent) /* in: parent value to set in all + nodes of the list */ +{ + que_common_t* common; + + common = node_list; + + while (common) { + common->parent = parent; + + common = que_node_get_next(common); + } +} + +/************************************************************************* +Parses an elsif element. */ +UNIV_INTERN +elsif_node_t* +pars_elsif_element( +/*===============*/ + /* out: elsif node */ + que_node_t* cond, /* in: if-condition */ + que_node_t* stat_list) /* in: statement list */ +{ + elsif_node_t* node; + + node = mem_heap_alloc(pars_sym_tab_global->heap, sizeof(elsif_node_t)); + + node->common.type = QUE_NODE_ELSIF; + + node->cond = cond; + + pars_resolve_exp_variables_and_types(NULL, cond); + + node->stat_list = stat_list; + + return(node); +} + +/************************************************************************* +Parses an if-statement. */ +UNIV_INTERN +if_node_t* +pars_if_statement( +/*==============*/ + /* out: if-statement node */ + que_node_t* cond, /* in: if-condition */ + que_node_t* stat_list, /* in: statement list */ + que_node_t* else_part) /* in: else-part statement list + or elsif element list */ +{ + if_node_t* node; + elsif_node_t* elsif_node; + + node = mem_heap_alloc(pars_sym_tab_global->heap, sizeof(if_node_t)); + + node->common.type = QUE_NODE_IF; + + node->cond = cond; + + pars_resolve_exp_variables_and_types(NULL, cond); + + node->stat_list = stat_list; + + if (else_part && (que_node_get_type(else_part) == QUE_NODE_ELSIF)) { + + /* There is a list of elsif conditions */ + + node->else_part = NULL; + node->elsif_list = else_part; + + elsif_node = else_part; + + while (elsif_node) { + pars_set_parent_in_list(elsif_node->stat_list, node); + + elsif_node = que_node_get_next(elsif_node); + } + } else { + node->else_part = else_part; + node->elsif_list = NULL; + + pars_set_parent_in_list(else_part, node); + } + + pars_set_parent_in_list(stat_list, node); + + return(node); +} + +/************************************************************************* +Parses a while-statement. */ +UNIV_INTERN +while_node_t* +pars_while_statement( +/*=================*/ + /* out: while-statement node */ + que_node_t* cond, /* in: while-condition */ + que_node_t* stat_list) /* in: statement list */ +{ + while_node_t* node; + + node = mem_heap_alloc(pars_sym_tab_global->heap, sizeof(while_node_t)); + + node->common.type = QUE_NODE_WHILE; + + node->cond = cond; + + pars_resolve_exp_variables_and_types(NULL, cond); + + node->stat_list = stat_list; + + pars_set_parent_in_list(stat_list, node); + + return(node); +} + +/************************************************************************* +Parses a for-loop-statement. */ +UNIV_INTERN +for_node_t* +pars_for_statement( +/*===============*/ + /* out: for-statement node */ + sym_node_t* loop_var, /* in: loop variable */ + que_node_t* loop_start_limit,/* in: loop start expression */ + que_node_t* loop_end_limit, /* in: loop end expression */ + que_node_t* stat_list) /* in: statement list */ +{ + for_node_t* node; + + node = mem_heap_alloc(pars_sym_tab_global->heap, sizeof(for_node_t)); + + node->common.type = QUE_NODE_FOR; + + pars_resolve_exp_variables_and_types(NULL, loop_var); + pars_resolve_exp_variables_and_types(NULL, loop_start_limit); + pars_resolve_exp_variables_and_types(NULL, loop_end_limit); + + node->loop_var = loop_var->indirection; + + ut_a(loop_var->indirection); + + node->loop_start_limit = loop_start_limit; + node->loop_end_limit = loop_end_limit; + + node->stat_list = stat_list; + + pars_set_parent_in_list(stat_list, node); + + return(node); +} + +/************************************************************************* +Parses an exit statement. */ +UNIV_INTERN +exit_node_t* +pars_exit_statement(void) +/*=====================*/ + /* out: exit statement node */ +{ + exit_node_t* node; + + node = mem_heap_alloc(pars_sym_tab_global->heap, sizeof(exit_node_t)); + node->common.type = QUE_NODE_EXIT; + + return(node); +} + +/************************************************************************* +Parses a return-statement. */ +UNIV_INTERN +return_node_t* +pars_return_statement(void) +/*=======================*/ + /* out: return-statement node */ +{ + return_node_t* node; + + node = mem_heap_alloc(pars_sym_tab_global->heap, + sizeof(return_node_t)); + node->common.type = QUE_NODE_RETURN; + + return(node); +} + +/************************************************************************* +Parses an assignment statement. */ +UNIV_INTERN +assign_node_t* +pars_assignment_statement( +/*======================*/ + /* out: assignment statement node */ + sym_node_t* var, /* in: variable to assign */ + que_node_t* val) /* in: value to assign */ +{ + assign_node_t* node; + + node = mem_heap_alloc(pars_sym_tab_global->heap, + sizeof(assign_node_t)); + node->common.type = QUE_NODE_ASSIGNMENT; + + node->var = var; + node->val = val; + + pars_resolve_exp_variables_and_types(NULL, var); + pars_resolve_exp_variables_and_types(NULL, val); + + ut_a(dtype_get_mtype(dfield_get_type(que_node_get_val(var))) + == dtype_get_mtype(dfield_get_type(que_node_get_val(val)))); + + return(node); +} + +/************************************************************************* +Parses a procedure call. */ +UNIV_INTERN +func_node_t* +pars_procedure_call( +/*================*/ + /* out: function node */ + que_node_t* res_word,/* in: procedure name reserved word */ + que_node_t* args) /* in: argument list */ +{ + func_node_t* node; + + node = pars_func(res_word, args); + + pars_resolve_exp_list_variables_and_types(NULL, args); + + return(node); +} + +/************************************************************************* +Parses a fetch statement. into_list or user_func (but not both) must be +non-NULL. */ +UNIV_INTERN +fetch_node_t* +pars_fetch_statement( +/*=================*/ + /* out: fetch statement node */ + sym_node_t* cursor, /* in: cursor node */ + sym_node_t* into_list, /* in: variables to set, or NULL */ + sym_node_t* user_func) /* in: user function name, or NULL */ +{ + sym_node_t* cursor_decl; + fetch_node_t* node; + + /* Logical XOR. */ + ut_a(!into_list != !user_func); + + node = mem_heap_alloc(pars_sym_tab_global->heap, sizeof(fetch_node_t)); + + node->common.type = QUE_NODE_FETCH; + + pars_resolve_exp_variables_and_types(NULL, cursor); + + if (into_list) { + pars_resolve_exp_list_variables_and_types(NULL, into_list); + node->into_list = into_list; + node->func = NULL; + } else { + pars_resolve_exp_variables_and_types(NULL, user_func); + + node->func = pars_info_get_user_func(pars_sym_tab_global->info, + user_func->name); + ut_a(node->func); + + node->into_list = NULL; + } + + cursor_decl = cursor->alias; + + ut_a(cursor_decl->token_type == SYM_CURSOR); + + node->cursor_def = cursor_decl->cursor_def; + + if (into_list) { + ut_a(que_node_list_get_len(into_list) + == que_node_list_get_len(node->cursor_def->select_list)); + } + + return(node); +} + +/************************************************************************* +Parses an open or close cursor statement. */ +UNIV_INTERN +open_node_t* +pars_open_statement( +/*================*/ + /* out: fetch statement node */ + ulint type, /* in: ROW_SEL_OPEN_CURSOR + or ROW_SEL_CLOSE_CURSOR */ + sym_node_t* cursor) /* in: cursor node */ +{ + sym_node_t* cursor_decl; + open_node_t* node; + + node = mem_heap_alloc(pars_sym_tab_global->heap, sizeof(open_node_t)); + + node->common.type = QUE_NODE_OPEN; + + pars_resolve_exp_variables_and_types(NULL, cursor); + + cursor_decl = cursor->alias; + + ut_a(cursor_decl->token_type == SYM_CURSOR); + + node->op_type = type; + node->cursor_def = cursor_decl->cursor_def; + + return(node); +} + +/************************************************************************* +Parses a row_printf-statement. */ +UNIV_INTERN +row_printf_node_t* +pars_row_printf_statement( +/*======================*/ + /* out: row_printf-statement node */ + sel_node_t* sel_node) /* in: select node */ +{ + row_printf_node_t* node; + + node = mem_heap_alloc(pars_sym_tab_global->heap, + sizeof(row_printf_node_t)); + node->common.type = QUE_NODE_ROW_PRINTF; + + node->sel_node = sel_node; + + sel_node->common.parent = node; + + return(node); +} + +/************************************************************************* +Parses a commit statement. */ +UNIV_INTERN +commit_node_t* +pars_commit_statement(void) +/*=======================*/ +{ + return(commit_node_create(pars_sym_tab_global->heap)); +} + +/************************************************************************* +Parses a rollback statement. */ +UNIV_INTERN +roll_node_t* +pars_rollback_statement(void) +/*=========================*/ +{ + return(roll_node_create(pars_sym_tab_global->heap)); +} + +/************************************************************************* +Parses a column definition at a table creation. */ +UNIV_INTERN +sym_node_t* +pars_column_def( +/*============*/ + /* out: column sym table + node */ + sym_node_t* sym_node, /* in: column node in the + symbol table */ + pars_res_word_t* type, /* in: data type */ + sym_node_t* len, /* in: length of column, or + NULL */ + void* is_unsigned, /* in: if not NULL, column + is of type UNSIGNED. */ + void* is_not_null) /* in: if not NULL, column + is of type NOT NULL. */ +{ + ulint len2; + + if (len) { + len2 = eval_node_get_int_val(len); + } else { + len2 = 0; + } + + pars_set_dfield_type(que_node_get_val(sym_node), type, len2, + is_unsigned != NULL, is_not_null != NULL); + + return(sym_node); +} + +/************************************************************************* +Parses a table creation operation. */ +UNIV_INTERN +tab_node_t* +pars_create_table( +/*==============*/ + /* out: table create subgraph */ + sym_node_t* table_sym, /* in: table name node in the symbol + table */ + sym_node_t* column_defs, /* in: list of column names */ + void* not_fit_in_memory __attribute__((unused))) + /* in: a non-NULL pointer means that + this is a table which in simulations + should be simulated as not fitting + in memory; thread is put to sleep + to simulate disk accesses; NOTE that + this flag is not stored to the data + dictionary on disk, and the database + will forget about non-NULL value if + it has to reload the table definition + from disk */ +{ + dict_table_t* table; + sym_node_t* column; + tab_node_t* node; + const dtype_t* dtype; + ulint n_cols; + + n_cols = que_node_list_get_len(column_defs); + + /* As the InnoDB SQL parser is for internal use only, + for creating some system tables, this function will only + create tables in the old (not compact) record format. */ + table = dict_mem_table_create(table_sym->name, 0, n_cols, 0); + +#ifdef UNIV_DEBUG + if (not_fit_in_memory != NULL) { + table->does_not_fit_in_memory = TRUE; + } +#endif /* UNIV_DEBUG */ + column = column_defs; + + while (column) { + dtype = dfield_get_type(que_node_get_val(column)); + + dict_mem_table_add_col(table, table->heap, + column->name, dtype->mtype, + dtype->prtype, dtype->len); + column->resolved = TRUE; + column->token_type = SYM_COLUMN; + + column = que_node_get_next(column); + } + + node = tab_create_graph_create(table, pars_sym_tab_global->heap); + + table_sym->resolved = TRUE; + table_sym->token_type = SYM_TABLE; + + return(node); +} + +/************************************************************************* +Parses an index creation operation. */ +UNIV_INTERN +ind_node_t* +pars_create_index( +/*==============*/ + /* out: index create subgraph */ + pars_res_word_t* unique_def, /* in: not NULL if a unique index */ + pars_res_word_t* clustered_def, /* in: not NULL if a clustered index */ + sym_node_t* index_sym, /* in: index name node in the symbol + table */ + sym_node_t* table_sym, /* in: table name node in the symbol + table */ + sym_node_t* column_list) /* in: list of column names */ +{ + dict_index_t* index; + sym_node_t* column; + ind_node_t* node; + ulint n_fields; + ulint ind_type; + + n_fields = que_node_list_get_len(column_list); + + ind_type = 0; + + if (unique_def) { + ind_type = ind_type | DICT_UNIQUE; + } + + if (clustered_def) { + ind_type = ind_type | DICT_CLUSTERED; + } + + index = dict_mem_index_create(table_sym->name, index_sym->name, 0, + ind_type, n_fields); + column = column_list; + + while (column) { + dict_mem_index_add_field(index, column->name, 0); + + column->resolved = TRUE; + column->token_type = SYM_COLUMN; + + column = que_node_get_next(column); + } + + node = ind_create_graph_create(index, pars_sym_tab_global->heap); + + table_sym->resolved = TRUE; + table_sym->token_type = SYM_TABLE; + + index_sym->resolved = TRUE; + index_sym->token_type = SYM_TABLE; + + return(node); +} + +/************************************************************************* +Parses a procedure definition. */ +UNIV_INTERN +que_fork_t* +pars_procedure_definition( +/*======================*/ + /* out: query fork node */ + sym_node_t* sym_node, /* in: procedure id node in the symbol + table */ + sym_node_t* param_list, /* in: parameter declaration list */ + que_node_t* stat_list) /* in: statement list */ +{ + proc_node_t* node; + que_fork_t* fork; + que_thr_t* thr; + mem_heap_t* heap; + + heap = pars_sym_tab_global->heap; + + fork = que_fork_create(NULL, NULL, QUE_FORK_PROCEDURE, heap); + fork->trx = NULL; + + thr = que_thr_create(fork, heap); + + node = mem_heap_alloc(heap, sizeof(proc_node_t)); + + node->common.type = QUE_NODE_PROC; + node->common.parent = thr; + + sym_node->token_type = SYM_PROCEDURE_NAME; + sym_node->resolved = TRUE; + + node->proc_id = sym_node; + node->param_list = param_list; + node->stat_list = stat_list; + + pars_set_parent_in_list(stat_list, node); + + node->sym_tab = pars_sym_tab_global; + + thr->child = node; + + pars_sym_tab_global->query_graph = fork; + + return(fork); +} + +/***************************************************************** +Parses a stored procedure call, when this is not within another stored +procedure, that is, the client issues a procedure call directly. +In MySQL/InnoDB, stored InnoDB procedures are invoked via the +parsed procedure tree, not via InnoDB SQL, so this function is not used. */ +UNIV_INTERN +que_fork_t* +pars_stored_procedure_call( +/*=======================*/ + /* out: query graph */ + sym_node_t* sym_node __attribute__((unused))) + /* in: stored procedure name */ +{ + ut_error; + return(NULL); +} + +/***************************************************************** +Retrieves characters to the lexical analyzer. */ +UNIV_INTERN +void +pars_get_lex_chars( +/*===============*/ + char* buf, /* in/out: buffer where to copy */ + int* result, /* out: number of characters copied or EOF */ + int max_size) /* in: maximum number of characters which fit + in the buffer */ +{ + int len; + + len = pars_sym_tab_global->string_len + - pars_sym_tab_global->next_char_pos; + if (len == 0) { +#ifdef YYDEBUG + /* fputs("SQL string ends\n", stderr); */ +#endif + *result = 0; + + return; + } + + if (len > max_size) { + len = max_size; + } + +#ifdef UNIV_SQL_DEBUG + if (pars_print_lexed) { + + if (len >= 5) { + len = 5; + } + + fwrite(pars_sym_tab_global->sql_string + + pars_sym_tab_global->next_char_pos, + 1, len, stderr); + } +#endif /* UNIV_SQL_DEBUG */ + + ut_memcpy(buf, pars_sym_tab_global->sql_string + + pars_sym_tab_global->next_char_pos, len); + *result = len; + + pars_sym_tab_global->next_char_pos += len; +} + +/***************************************************************** +Called by yyparse on error. */ +UNIV_INTERN +void +yyerror( +/*====*/ + const char* s __attribute__((unused))) + /* in: error message string */ +{ + ut_ad(s); + + fputs("PARSER ERROR: Syntax error in SQL string\n", stderr); + + ut_error; +} + +/***************************************************************** +Parses an SQL string returning the query graph. */ +UNIV_INTERN +que_t* +pars_sql( +/*=====*/ + /* out, own: the query graph */ + pars_info_t* info, /* in: extra information, or NULL */ + const char* str) /* in: SQL string */ +{ + sym_node_t* sym_node; + mem_heap_t* heap; + que_t* graph; + + ut_ad(str); + + heap = mem_heap_create(256); + + /* Currently, the parser is not reentrant: */ + ut_ad(mutex_own(&(dict_sys->mutex))); + + pars_sym_tab_global = sym_tab_create(heap); + + pars_sym_tab_global->string_len = strlen(str); + pars_sym_tab_global->sql_string = mem_heap_dup( + heap, str, pars_sym_tab_global->string_len + 1); + pars_sym_tab_global->next_char_pos = 0; + pars_sym_tab_global->info = info; + + yyparse(); + + sym_node = UT_LIST_GET_FIRST(pars_sym_tab_global->sym_list); + + while (sym_node) { + ut_a(sym_node->resolved); + + sym_node = UT_LIST_GET_NEXT(sym_list, sym_node); + } + + graph = pars_sym_tab_global->query_graph; + + graph->sym_tab = pars_sym_tab_global; + graph->info = info; + + /* fprintf(stderr, "SQL graph size %lu\n", mem_heap_get_size(heap)); */ + + return(graph); +} + +/********************************************************************** +Completes a query graph by adding query thread and fork nodes +above it and prepares the graph for running. The fork created is of +type QUE_FORK_MYSQL_INTERFACE. */ +UNIV_INTERN +que_thr_t* +pars_complete_graph_for_exec( +/*=========================*/ + /* out: query thread node to run */ + que_node_t* node, /* in: root node for an incomplete + query graph */ + trx_t* trx, /* in: transaction handle */ + mem_heap_t* heap) /* in: memory heap from which allocated */ +{ + que_fork_t* fork; + que_thr_t* thr; + + fork = que_fork_create(NULL, NULL, QUE_FORK_MYSQL_INTERFACE, heap); + fork->trx = trx; + + thr = que_thr_create(fork, heap); + + thr->child = node; + + que_node_set_parent(node, thr); + + trx->graph = NULL; + + return(thr); +} + +/******************************************************************** +Create parser info struct.*/ +UNIV_INTERN +pars_info_t* +pars_info_create(void) +/*==================*/ + /* out, own: info struct */ +{ + pars_info_t* info; + mem_heap_t* heap; + + heap = mem_heap_create(512); + + info = mem_heap_alloc(heap, sizeof(*info)); + + info->heap = heap; + info->funcs = NULL; + info->bound_lits = NULL; + info->bound_ids = NULL; + info->graph_owns_us = TRUE; + + return(info); +} + +/******************************************************************** +Free info struct and everything it contains.*/ +UNIV_INTERN +void +pars_info_free( +/*===========*/ + pars_info_t* info) /* in: info struct */ +{ + mem_heap_free(info->heap); +} + +/******************************************************************** +Add bound literal. */ +UNIV_INTERN +void +pars_info_add_literal( +/*==================*/ + pars_info_t* info, /* in: info struct */ + const char* name, /* in: name */ + const void* address, /* in: address */ + ulint length, /* in: length of data */ + ulint type, /* in: type, e.g. DATA_FIXBINARY */ + ulint prtype) /* in: precise type, e.g. + DATA_UNSIGNED */ +{ + pars_bound_lit_t* pbl; + + ut_ad(!pars_info_get_bound_lit(info, name)); + + pbl = mem_heap_alloc(info->heap, sizeof(*pbl)); + + pbl->name = name; + pbl->address = address; + pbl->length = length; + pbl->type = type; + pbl->prtype = prtype; + + if (!info->bound_lits) { + info->bound_lits = ib_vector_create(info->heap, 8); + } + + ib_vector_push(info->bound_lits, pbl); +} + +/******************************************************************** +Equivalent to pars_info_add_literal(info, name, str, strlen(str), +DATA_VARCHAR, DATA_ENGLISH). */ +UNIV_INTERN +void +pars_info_add_str_literal( +/*======================*/ + pars_info_t* info, /* in: info struct */ + const char* name, /* in: name */ + const char* str) /* in: string */ +{ + pars_info_add_literal(info, name, str, strlen(str), + DATA_VARCHAR, DATA_ENGLISH); +} + +/******************************************************************** +Equivalent to: + +char buf[4]; +mach_write_to_4(buf, val); +pars_info_add_literal(info, name, buf, 4, DATA_INT, 0); + +except that the buffer is dynamically allocated from the info struct's +heap. */ +UNIV_INTERN +void +pars_info_add_int4_literal( +/*=======================*/ + pars_info_t* info, /* in: info struct */ + const char* name, /* in: name */ + lint val) /* in: value */ +{ + byte* buf = mem_heap_alloc(info->heap, 4); + + mach_write_to_4(buf, val); + pars_info_add_literal(info, name, buf, 4, DATA_INT, 0); +} + +/******************************************************************** +Equivalent to: + +char buf[8]; +mach_write_to_8(buf, val); +pars_info_add_literal(info, name, buf, 8, DATA_FIXBINARY, 0); + +except that the buffer is dynamically allocated from the info struct's +heap. */ +UNIV_INTERN +void +pars_info_add_dulint_literal( +/*=========================*/ + pars_info_t* info, /* in: info struct */ + const char* name, /* in: name */ + dulint val) /* in: value */ +{ + byte* buf = mem_heap_alloc(info->heap, 8); + + mach_write_to_8(buf, val); + + pars_info_add_literal(info, name, buf, 8, DATA_FIXBINARY, 0); +} + +/******************************************************************** +Add user function. */ +UNIV_INTERN +void +pars_info_add_function( +/*===================*/ + pars_info_t* info, /* in: info struct */ + const char* name, /* in: function name */ + pars_user_func_cb_t func, /* in: function address */ + void* arg) /* in: user-supplied argument */ +{ + pars_user_func_t* puf; + + ut_ad(!pars_info_get_user_func(info, name)); + + puf = mem_heap_alloc(info->heap, sizeof(*puf)); + + puf->name = name; + puf->func = func; + puf->arg = arg; + + if (!info->funcs) { + info->funcs = ib_vector_create(info->heap, 8); + } + + ib_vector_push(info->funcs, puf); +} + +/******************************************************************** +Add bound id. */ +UNIV_INTERN +void +pars_info_add_id( +/*=============*/ + pars_info_t* info, /* in: info struct */ + const char* name, /* in: name */ + const char* id) /* in: id */ +{ + pars_bound_id_t* bid; + + ut_ad(!pars_info_get_bound_id(info, name)); + + bid = mem_heap_alloc(info->heap, sizeof(*bid)); + + bid->name = name; + bid->id = id; + + if (!info->bound_ids) { + info->bound_ids = ib_vector_create(info->heap, 8); + } + + ib_vector_push(info->bound_ids, bid); +} + +/******************************************************************** +Get user function with the given name.*/ +UNIV_INTERN +pars_user_func_t* +pars_info_get_user_func( +/*====================*/ + /* out: user func, or NULL if not + found */ + pars_info_t* info, /* in: info struct */ + const char* name) /* in: function name to find*/ +{ + ulint i; + ib_vector_t* vec; + + if (!info || !info->funcs) { + return(NULL); + } + + vec = info->funcs; + + for (i = 0; i < ib_vector_size(vec); i++) { + pars_user_func_t* puf = ib_vector_get(vec, i); + + if (strcmp(puf->name, name) == 0) { + return(puf); + } + } + + return(NULL); +} + +/******************************************************************** +Get bound literal with the given name.*/ +UNIV_INTERN +pars_bound_lit_t* +pars_info_get_bound_lit( +/*====================*/ + /* out: bound literal, or NULL if + not found */ + pars_info_t* info, /* in: info struct */ + const char* name) /* in: bound literal name to find */ +{ + ulint i; + ib_vector_t* vec; + + if (!info || !info->bound_lits) { + return(NULL); + } + + vec = info->bound_lits; + + for (i = 0; i < ib_vector_size(vec); i++) { + pars_bound_lit_t* pbl = ib_vector_get(vec, i); + + if (strcmp(pbl->name, name) == 0) { + return(pbl); + } + } + + return(NULL); +} + +/******************************************************************** +Get bound id with the given name.*/ +UNIV_INTERN +pars_bound_id_t* +pars_info_get_bound_id( +/*===================*/ + /* out: bound id, or NULL if not + found */ + pars_info_t* info, /* in: info struct */ + const char* name) /* in: bound id name to find */ +{ + ulint i; + ib_vector_t* vec; + + if (!info || !info->bound_ids) { + return(NULL); + } + + vec = info->bound_ids; + + for (i = 0; i < ib_vector_size(vec); i++) { + pars_bound_id_t* bid = ib_vector_get(vec, i); + + if (strcmp(bid->name, name) == 0) { + return(bid); + } + } + + return(NULL); +} === added file 'storage/xtradb/pars/pars0sym.c' --- a/storage/xtradb/pars/pars0sym.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/pars/pars0sym.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,370 @@ +/***************************************************************************** + +Copyright (c) 1997, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +SQL parser symbol table + +Created 12/15/1997 Heikki Tuuri +*******************************************************/ + +#include "pars0sym.h" + +#ifdef UNIV_NONINL +#include "pars0sym.ic" +#endif + +#include "mem0mem.h" +#include "data0type.h" +#include "data0data.h" +#include "pars0grm.h" +#include "pars0pars.h" +#include "que0que.h" +#include "eval0eval.h" +#include "row0sel.h" + +/********************************************************************** +Creates a symbol table for a single stored procedure or query. */ +UNIV_INTERN +sym_tab_t* +sym_tab_create( +/*===========*/ + /* out, own: symbol table */ + mem_heap_t* heap) /* in: memory heap where to create */ +{ + sym_tab_t* sym_tab; + + sym_tab = mem_heap_alloc(heap, sizeof(sym_tab_t)); + + UT_LIST_INIT(sym_tab->sym_list); + UT_LIST_INIT(sym_tab->func_node_list); + + sym_tab->heap = heap; + + return(sym_tab); +} + +/********************************************************************** +Frees the memory allocated dynamically AFTER parsing phase for variables +etc. in the symbol table. Does not free the mem heap where the table was +originally created. Frees also SQL explicit cursor definitions. */ +UNIV_INTERN +void +sym_tab_free_private( +/*=================*/ + sym_tab_t* sym_tab) /* in, own: symbol table */ +{ + sym_node_t* sym; + func_node_t* func; + + sym = UT_LIST_GET_FIRST(sym_tab->sym_list); + + while (sym) { + eval_node_free_val_buf(sym); + + if (sym->prefetch_buf) { + sel_col_prefetch_buf_free(sym->prefetch_buf); + } + + if (sym->cursor_def) { + que_graph_free_recursive(sym->cursor_def); + } + + sym = UT_LIST_GET_NEXT(sym_list, sym); + } + + func = UT_LIST_GET_FIRST(sym_tab->func_node_list); + + while (func) { + eval_node_free_val_buf(func); + + func = UT_LIST_GET_NEXT(func_node_list, func); + } +} + +/********************************************************************** +Adds an integer literal to a symbol table. */ +UNIV_INTERN +sym_node_t* +sym_tab_add_int_lit( +/*================*/ + /* out: symbol table node */ + sym_tab_t* sym_tab, /* in: symbol table */ + ulint val) /* in: integer value */ +{ + sym_node_t* node; + byte* data; + + node = mem_heap_alloc(sym_tab->heap, sizeof(sym_node_t)); + + node->common.type = QUE_NODE_SYMBOL; + + node->resolved = TRUE; + node->token_type = SYM_LIT; + + node->indirection = NULL; + + dtype_set(dfield_get_type(&node->common.val), DATA_INT, 0, 4); + + data = mem_heap_alloc(sym_tab->heap, 4); + mach_write_to_4(data, val); + + dfield_set_data(&(node->common.val), data, 4); + + node->common.val_buf_size = 0; + node->prefetch_buf = NULL; + node->cursor_def = NULL; + + UT_LIST_ADD_LAST(sym_list, sym_tab->sym_list, node); + + node->sym_table = sym_tab; + + return(node); +} + +/********************************************************************** +Adds a string literal to a symbol table. */ +UNIV_INTERN +sym_node_t* +sym_tab_add_str_lit( +/*================*/ + /* out: symbol table node */ + sym_tab_t* sym_tab, /* in: symbol table */ + byte* str, /* in: string with no quotes around + it */ + ulint len) /* in: string length */ +{ + sym_node_t* node; + byte* data; + + node = mem_heap_alloc(sym_tab->heap, sizeof(sym_node_t)); + + node->common.type = QUE_NODE_SYMBOL; + + node->resolved = TRUE; + node->token_type = SYM_LIT; + + node->indirection = NULL; + + dtype_set(dfield_get_type(&node->common.val), + DATA_VARCHAR, DATA_ENGLISH, 0); + + if (len) { + data = mem_heap_alloc(sym_tab->heap, len); + ut_memcpy(data, str, len); + } else { + data = NULL; + } + + dfield_set_data(&(node->common.val), data, len); + + node->common.val_buf_size = 0; + node->prefetch_buf = NULL; + node->cursor_def = NULL; + + UT_LIST_ADD_LAST(sym_list, sym_tab->sym_list, node); + + node->sym_table = sym_tab; + + return(node); +} + +/********************************************************************** +Add a bound literal to a symbol table. */ +UNIV_INTERN +sym_node_t* +sym_tab_add_bound_lit( +/*==================*/ + /* out: symbol table node */ + sym_tab_t* sym_tab, /* in: symbol table */ + const char* name, /* in: name of bound literal */ + ulint* lit_type) /* out: type of literal (PARS_*_LIT) */ +{ + sym_node_t* node; + pars_bound_lit_t* blit; + ulint len = 0; + + blit = pars_info_get_bound_lit(sym_tab->info, name); + ut_a(blit); + + node = mem_heap_alloc(sym_tab->heap, sizeof(sym_node_t)); + + node->common.type = QUE_NODE_SYMBOL; + + node->resolved = TRUE; + node->token_type = SYM_LIT; + + node->indirection = NULL; + + switch (blit->type) { + case DATA_FIXBINARY: + len = blit->length; + *lit_type = PARS_FIXBINARY_LIT; + break; + + case DATA_BLOB: + *lit_type = PARS_BLOB_LIT; + break; + + case DATA_VARCHAR: + *lit_type = PARS_STR_LIT; + break; + + case DATA_CHAR: + ut_a(blit->length > 0); + + len = blit->length; + *lit_type = PARS_STR_LIT; + break; + + case DATA_INT: + ut_a(blit->length > 0); + ut_a(blit->length <= 8); + + len = blit->length; + *lit_type = PARS_INT_LIT; + break; + + default: + ut_error; + } + + dtype_set(dfield_get_type(&node->common.val), + blit->type, blit->prtype, len); + + dfield_set_data(&(node->common.val), blit->address, blit->length); + + node->common.val_buf_size = 0; + node->prefetch_buf = NULL; + node->cursor_def = NULL; + + UT_LIST_ADD_LAST(sym_list, sym_tab->sym_list, node); + + node->sym_table = sym_tab; + + return(node); +} + +/********************************************************************** +Adds an SQL null literal to a symbol table. */ +UNIV_INTERN +sym_node_t* +sym_tab_add_null_lit( +/*=================*/ + /* out: symbol table node */ + sym_tab_t* sym_tab) /* in: symbol table */ +{ + sym_node_t* node; + + node = mem_heap_alloc(sym_tab->heap, sizeof(sym_node_t)); + + node->common.type = QUE_NODE_SYMBOL; + + node->resolved = TRUE; + node->token_type = SYM_LIT; + + node->indirection = NULL; + + dfield_get_type(&node->common.val)->mtype = DATA_ERROR; + + dfield_set_null(&node->common.val); + + node->common.val_buf_size = 0; + node->prefetch_buf = NULL; + node->cursor_def = NULL; + + UT_LIST_ADD_LAST(sym_list, sym_tab->sym_list, node); + + node->sym_table = sym_tab; + + return(node); +} + +/********************************************************************** +Adds an identifier to a symbol table. */ +UNIV_INTERN +sym_node_t* +sym_tab_add_id( +/*===========*/ + /* out: symbol table node */ + sym_tab_t* sym_tab, /* in: symbol table */ + byte* name, /* in: identifier name */ + ulint len) /* in: identifier length */ +{ + sym_node_t* node; + + node = mem_heap_alloc(sym_tab->heap, sizeof(sym_node_t)); + + node->common.type = QUE_NODE_SYMBOL; + + node->resolved = FALSE; + node->indirection = NULL; + + node->name = mem_heap_strdupl(sym_tab->heap, (char*) name, len); + node->name_len = len; + + UT_LIST_ADD_LAST(sym_list, sym_tab->sym_list, node); + + dfield_set_null(&node->common.val); + + node->common.val_buf_size = 0; + node->prefetch_buf = NULL; + node->cursor_def = NULL; + + node->sym_table = sym_tab; + + return(node); +} + +/********************************************************************** +Add a bound identifier to a symbol table. */ +UNIV_INTERN +sym_node_t* +sym_tab_add_bound_id( +/*===========*/ + /* out: symbol table node */ + sym_tab_t* sym_tab, /* in: symbol table */ + const char* name) /* in: name of bound id */ +{ + sym_node_t* node; + pars_bound_id_t* bid; + + bid = pars_info_get_bound_id(sym_tab->info, name); + ut_a(bid); + + node = mem_heap_alloc(sym_tab->heap, sizeof(sym_node_t)); + + node->common.type = QUE_NODE_SYMBOL; + + node->resolved = FALSE; + node->indirection = NULL; + + node->name = mem_heap_strdup(sym_tab->heap, bid->id); + node->name_len = strlen(node->name); + + UT_LIST_ADD_LAST(sym_list, sym_tab->sym_list, node); + + dfield_set_null(&node->common.val); + + node->common.val_buf_size = 0; + node->prefetch_buf = NULL; + node->cursor_def = NULL; + + node->sym_table = sym_tab; + + return(node); +} === added file 'storage/xtradb/plug.in' --- a/storage/xtradb/plug.in 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/plug.in 2009-06-09 12:21:26 +0000 @@ -0,0 +1,80 @@ +# +# Copyright (c) 2006, 2009, Innobase Oy. All Rights Reserved. +# +# This program is free software; you can redistribute it and/or modify it under +# the terms of the GNU General Public License as published by the Free Software +# Foundation; version 2 of the License. +# +# This program is distributed in the hope that it will be useful, but WITHOUT +# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License along with +# this program; if not, write to the Free Software Foundation, Inc., 59 Temple +# Place, Suite 330, Boston, MA 02111-1307 USA +# + +MYSQL_STORAGE_ENGINE(innobase, innodb, [InnoDB Storage Engine], + [Transactional Tables using InnoDB], [max,max-no-ndb]) +MYSQL_PLUGIN_DIRECTORY(innobase, [storage/xtradb]) +MYSQL_PLUGIN_STATIC(innobase, [libinnobase.a]) +MYSQL_PLUGIN_DYNAMIC(innobase, [ha_innodb.la]) +MYSQL_PLUGIN_ACTIONS(innobase, [ + AC_CHECK_HEADERS(sched.h) + AC_CHECK_SIZEOF(int, 4) + AC_CHECK_SIZEOF(long, 4) + AC_CHECK_SIZEOF(void*, 4) + AC_CHECK_FUNCS(sched_yield fdatasync localtime_r) + AC_C_BIGENDIAN + case "$target_os" in + lin*) + CFLAGS="$CFLAGS -DUNIV_LINUX";; + hpux10*) + CFLAGS="$CFLAGS -DUNIV_MUST_NOT_INLINE -DUNIV_HPUX -DUNIV_HPUX10";; + hp*) + CFLAGS="$CFLAGS -DUNIV_MUST_NOT_INLINE -DUNIV_HPUX";; + aix*) + CFLAGS="$CFLAGS -DUNIV_AIX";; + irix*|osf*|sysv5uw7*|openbsd*) + CFLAGS="$CFLAGS -DUNIV_MUST_NOT_INLINE";; + *solaris*|*SunOS*) + CFLAGS="$CFLAGS -DUNIV_SOLARIS";; + esac + INNODB_DYNAMIC_CFLAGS="-DMYSQL_DYNAMIC_PLUGIN" + case "$target_cpu" in + x86_64) + # The AMD64 ABI forbids absolute addresses in shared libraries + ;; + *86) + # Use absolute addresses on IA-32 + INNODB_DYNAMIC_CFLAGS="$INNODB_DYNAMIC_CFLAGS -prefer-non-pic" + ;; + esac + AC_SUBST(INNODB_DYNAMIC_CFLAGS) + AC_MSG_CHECKING(whether pthread_t can be used by GCC atomic builtins) + AC_TRY_RUN( + [ + #include <pthread.h> + + int main(int argc, char** argv) { + pthread_t x1; + pthread_t x2; + pthread_t x3; + + __sync_bool_compare_and_swap(&x1, x2, x3); + + return(0); + } + ], + [ + AC_DEFINE([HAVE_ATOMIC_PTHREAD_T], [1], + [pthread_t can be used by GCC atomic builtins]) + AC_MSG_RESULT(yes) + ], + [ + AC_MSG_RESULT(no) + ] + ) + ]) + +# vim: set ft=config: === added directory 'storage/xtradb/que' === added file 'storage/xtradb/que/que0que.c' --- a/storage/xtradb/que/que0que.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/que/que0que.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,1461 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Query graph + +Created 5/27/1996 Heikki Tuuri +*******************************************************/ + +#include "que0que.h" + +#ifdef UNIV_NONINL +#include "que0que.ic" +#endif + +#include "srv0que.h" +#include "usr0sess.h" +#include "trx0trx.h" +#include "trx0roll.h" +#include "row0undo.h" +#include "row0ins.h" +#include "row0upd.h" +#include "row0sel.h" +#include "row0purge.h" +#include "dict0crea.h" +#include "log0log.h" +#include "eval0proc.h" +#include "eval0eval.h" +#include "pars0types.h" + +#define QUE_PARALLELIZE_LIMIT (64 * 256 * 256 * 256) +#define QUE_ROUND_ROBIN_LIMIT (64 * 256 * 256 * 256) +#define QUE_MAX_LOOPS_WITHOUT_CHECK 16 + +#ifdef UNIV_DEBUG +/* If the following flag is set TRUE, the module will print trace info +of SQL execution in the UNIV_SQL_DEBUG version */ +UNIV_INTERN ibool que_trace_on = FALSE; +#endif /* UNIV_DEBUG */ + +/* Short introduction to query graphs + ================================== + +A query graph consists of nodes linked to each other in various ways. The +execution starts at que_run_threads() which takes a que_thr_t parameter. +que_thr_t contains two fields that control query graph execution: run_node +and prev_node. run_node is the next node to execute and prev_node is the +last node executed. + +Each node has a pointer to a 'next' statement, i.e., its brother, and a +pointer to its parent node. The next pointer is NULL in the last statement +of a block. + +Loop nodes contain a link to the first statement of the enclosed statement +list. While the loop runs, que_thr_step() checks if execution to the loop +node came from its parent or from one of the statement nodes in the loop. If +it came from the parent of the loop node it starts executing the first +statement node in the loop. If it came from one of the statement nodes in +the loop, then it checks if the statement node has another statement node +following it, and runs it if so. + +To signify loop ending, the loop statements (see e.g. while_step()) set +que_thr_t->run_node to the loop node's parent node. This is noticed on the +next call of que_thr_step() and execution proceeds to the node pointed to by +the loop node's 'next' pointer. + +For example, the code: + +X := 1; +WHILE X < 5 LOOP + X := X + 1; + X := X + 1; +X := 5 + +will result in the following node hierarchy, with the X-axis indicating +'next' links and the Y-axis indicating parent/child links: + +A - W - A + | + | + A - A + +A = assign_node_t, W = while_node_t. */ + +/* How a stored procedure containing COMMIT or ROLLBACK commands +is executed? + +The commit or rollback can be seen as a subprocedure call. +The problem is that if there are several query threads +currently running within the transaction, their action could +mess the commit or rollback operation. Or, at the least, the +operation would be difficult to visualize and keep in control. + +Therefore the query thread requesting a commit or a rollback +sends to the transaction a signal, which moves the transaction +to TRX_QUE_SIGNALED state. All running query threads of the +transaction will eventually notice that the transaction is now in +this state and voluntarily suspend themselves. Only the last +query thread which suspends itself will trigger handling of +the signal. + +When the transaction starts to handle a rollback or commit +signal, it builds a query graph which, when executed, will +roll back or commit the incomplete transaction. The transaction +is moved to the TRX_QUE_ROLLING_BACK or TRX_QUE_COMMITTING state. +If specified, the SQL cursors opened by the transaction are closed. +When the execution of the graph completes, it is like returning +from a subprocedure: the query thread which requested the operation +starts running again. */ + +/************************************************************************** +Moves a thread from another state to the QUE_THR_RUNNING state. Increments +the n_active_thrs counters of the query graph and transaction. +***NOTE***: This is the only function in which such a transition is allowed +to happen! */ +static +void +que_thr_move_to_run_state( +/*======================*/ + que_thr_t* thr); /* in: an query thread */ + +/*************************************************************************** +Adds a query graph to the session's list of graphs. */ +UNIV_INTERN +void +que_graph_publish( +/*==============*/ + que_t* graph, /* in: graph */ + sess_t* sess) /* in: session */ +{ + ut_ad(mutex_own(&kernel_mutex)); + + UT_LIST_ADD_LAST(graphs, sess->graphs, graph); +} + +/*************************************************************************** +Creates a query graph fork node. */ +UNIV_INTERN +que_fork_t* +que_fork_create( +/*============*/ + /* out, own: fork node */ + que_t* graph, /* in: graph, if NULL then this + fork node is assumed to be the + graph root */ + que_node_t* parent, /* in: parent node */ + ulint fork_type, /* in: fork type */ + mem_heap_t* heap) /* in: memory heap where created */ +{ + que_fork_t* fork; + + ut_ad(heap); + + fork = mem_heap_alloc(heap, sizeof(que_fork_t)); + + fork->common.type = QUE_NODE_FORK; + fork->n_active_thrs = 0; + + fork->state = QUE_FORK_COMMAND_WAIT; + + if (graph != NULL) { + fork->graph = graph; + } else { + fork->graph = fork; + } + + fork->common.parent = parent; + fork->fork_type = fork_type; + + fork->caller = NULL; + + UT_LIST_INIT(fork->thrs); + + fork->sym_tab = NULL; + fork->info = NULL; + + fork->heap = heap; + + return(fork); +} + +/*************************************************************************** +Creates a query graph thread node. */ +UNIV_INTERN +que_thr_t* +que_thr_create( +/*===========*/ + /* out, own: query thread node */ + que_fork_t* parent, /* in: parent node, i.e., a fork node */ + mem_heap_t* heap) /* in: memory heap where created */ +{ + que_thr_t* thr; + + ut_ad(parent && heap); + + thr = mem_heap_alloc(heap, sizeof(que_thr_t)); + + thr->common.type = QUE_NODE_THR; + thr->common.parent = parent; + + thr->magic_n = QUE_THR_MAGIC_N; + + thr->graph = parent->graph; + + thr->state = QUE_THR_COMMAND_WAIT; + + thr->is_active = FALSE; + + thr->run_node = NULL; + thr->resource = 0; + thr->lock_state = QUE_THR_LOCK_NOLOCK; + + UT_LIST_ADD_LAST(thrs, parent->thrs, thr); + + return(thr); +} + +/************************************************************************** +Moves a suspended query thread to the QUE_THR_RUNNING state and may release +a single worker thread to execute it. This function should be used to end +the wait state of a query thread waiting for a lock or a stored procedure +completion. */ +UNIV_INTERN +void +que_thr_end_wait( +/*=============*/ + que_thr_t* thr, /* in: query thread in the + QUE_THR_LOCK_WAIT, + or QUE_THR_PROCEDURE_WAIT, or + QUE_THR_SIG_REPLY_WAIT state */ + que_thr_t** next_thr) /* in/out: next query thread to run; + if the value which is passed in is + a pointer to a NULL pointer, then the + calling function can start running + a new query thread; if NULL is passed + as the parameter, it is ignored */ +{ + ibool was_active; + + ut_ad(mutex_own(&kernel_mutex)); + ut_ad(thr); + ut_ad((thr->state == QUE_THR_LOCK_WAIT) + || (thr->state == QUE_THR_PROCEDURE_WAIT) + || (thr->state == QUE_THR_SIG_REPLY_WAIT)); + ut_ad(thr->run_node); + + thr->prev_node = thr->run_node; + + was_active = thr->is_active; + + que_thr_move_to_run_state(thr); + + if (was_active) { + + return; + } + + if (next_thr && *next_thr == NULL) { + *next_thr = thr; + } else { + ut_a(0); + srv_que_task_enqueue_low(thr); + } +} + +/************************************************************************** +Same as que_thr_end_wait, but no parameter next_thr available. */ +UNIV_INTERN +void +que_thr_end_wait_no_next_thr( +/*=========================*/ + que_thr_t* thr) /* in: query thread in the QUE_THR_LOCK_WAIT, + or QUE_THR_PROCEDURE_WAIT, or + QUE_THR_SIG_REPLY_WAIT state */ +{ + ibool was_active; + + ut_a(thr->state == QUE_THR_LOCK_WAIT); /* In MySQL this is the + only possible state here */ + ut_ad(mutex_own(&kernel_mutex)); + ut_ad(thr); + ut_ad((thr->state == QUE_THR_LOCK_WAIT) + || (thr->state == QUE_THR_PROCEDURE_WAIT) + || (thr->state == QUE_THR_SIG_REPLY_WAIT)); + + was_active = thr->is_active; + + que_thr_move_to_run_state(thr); + + if (was_active) { + + return; + } + + /* In MySQL we let the OS thread (not just the query thread) to wait + for the lock to be released: */ + + srv_release_mysql_thread_if_suspended(thr); + + /* srv_que_task_enqueue_low(thr); */ +} + +/************************************************************************** +Inits a query thread for a command. */ +UNIV_INLINE +void +que_thr_init_command( +/*=================*/ + que_thr_t* thr) /* in: query thread */ +{ + thr->run_node = thr; + thr->prev_node = thr->common.parent; + + que_thr_move_to_run_state(thr); +} + +/************************************************************************** +Starts execution of a command in a query fork. Picks a query thread which +is not in the QUE_THR_RUNNING state and moves it to that state. If none +can be chosen, a situation which may arise in parallelized fetches, NULL +is returned. */ +UNIV_INTERN +que_thr_t* +que_fork_start_command( +/*===================*/ + /* out: a query thread of the graph moved to + QUE_THR_RUNNING state, or NULL; the query + thread should be executed by que_run_threads + by the caller */ + que_fork_t* fork) /* in: a query fork */ +{ + que_thr_t* thr; + que_thr_t* suspended_thr = NULL; + que_thr_t* completed_thr = NULL; + + fork->state = QUE_FORK_ACTIVE; + + fork->last_sel_node = NULL; + + suspended_thr = NULL; + completed_thr = NULL; + + /* Choose the query thread to run: usually there is just one thread, + but in a parallelized select, which necessarily is non-scrollable, + there may be several to choose from */ + + /* First we try to find a query thread in the QUE_THR_COMMAND_WAIT + state. Then we try to find a query thread in the QUE_THR_SUSPENDED + state, finally we try to find a query thread in the QUE_THR_COMPLETED + state */ + + thr = UT_LIST_GET_FIRST(fork->thrs); + + /* We make a single pass over the thr list within which we note which + threads are ready to run. */ + while (thr) { + switch (thr->state) { + case QUE_THR_COMMAND_WAIT: + + /* We have to send the initial message to query thread + to start it */ + + que_thr_init_command(thr); + + return(thr); + + case QUE_THR_SUSPENDED: + /* In this case the execution of the thread was + suspended: no initial message is needed because + execution can continue from where it was left */ + if (!suspended_thr) { + suspended_thr = thr; + } + + break; + + case QUE_THR_COMPLETED: + if (!completed_thr) { + completed_thr = thr; + } + + break; + + case QUE_THR_LOCK_WAIT: + ut_error; + + } + + thr = UT_LIST_GET_NEXT(thrs, thr); + } + + if (suspended_thr) { + + thr = suspended_thr; + que_thr_move_to_run_state(thr); + + } else if (completed_thr) { + + thr = completed_thr; + que_thr_init_command(thr); + } + + return(thr); +} + +/************************************************************************** +After signal handling is finished, returns control to a query graph error +handling routine. (Currently, just returns the control to the root of the +graph so that the graph can communicate an error message to the client.) */ +UNIV_INTERN +void +que_fork_error_handle( +/*==================*/ + trx_t* trx __attribute__((unused)), /* in: trx */ + que_t* fork) /* in: query graph which was run before signal + handling started, NULL not allowed */ +{ + que_thr_t* thr; + + ut_ad(mutex_own(&kernel_mutex)); + ut_ad(trx->sess->state == SESS_ERROR); + ut_ad(UT_LIST_GET_LEN(trx->reply_signals) == 0); + ut_ad(UT_LIST_GET_LEN(trx->wait_thrs) == 0); + + thr = UT_LIST_GET_FIRST(fork->thrs); + + while (thr != NULL) { + ut_ad(!thr->is_active); + ut_ad(thr->state != QUE_THR_SIG_REPLY_WAIT); + ut_ad(thr->state != QUE_THR_LOCK_WAIT); + + thr->run_node = thr; + thr->prev_node = thr->child; + thr->state = QUE_THR_COMPLETED; + + thr = UT_LIST_GET_NEXT(thrs, thr); + } + + thr = UT_LIST_GET_FIRST(fork->thrs); + + que_thr_move_to_run_state(thr); + + ut_a(0); + srv_que_task_enqueue_low(thr); +} + +/******************************************************************** +Tests if all the query threads in the same fork have a given state. */ +UNIV_INLINE +ibool +que_fork_all_thrs_in_state( +/*=======================*/ + /* out: TRUE if all the query threads in the + same fork were in the given state */ + que_fork_t* fork, /* in: query fork */ + ulint state) /* in: state */ +{ + que_thr_t* thr_node; + + thr_node = UT_LIST_GET_FIRST(fork->thrs); + + while (thr_node != NULL) { + if (thr_node->state != state) { + + return(FALSE); + } + + thr_node = UT_LIST_GET_NEXT(thrs, thr_node); + } + + return(TRUE); +} + +/************************************************************************** +Calls que_graph_free_recursive for statements in a statement list. */ +static +void +que_graph_free_stat_list( +/*=====================*/ + que_node_t* node) /* in: first query graph node in the list */ +{ + while (node) { + que_graph_free_recursive(node); + + node = que_node_get_next(node); + } +} + +/************************************************************************** +Frees a query graph, but not the heap where it was created. Does not free +explicit cursor declarations, they are freed in que_graph_free. */ +UNIV_INTERN +void +que_graph_free_recursive( +/*=====================*/ + que_node_t* node) /* in: query graph node */ +{ + que_fork_t* fork; + que_thr_t* thr; + undo_node_t* undo; + sel_node_t* sel; + ins_node_t* ins; + upd_node_t* upd; + tab_node_t* cre_tab; + ind_node_t* cre_ind; + + if (node == NULL) { + + return; + } + + switch (que_node_get_type(node)) { + + case QUE_NODE_FORK: + fork = node; + + thr = UT_LIST_GET_FIRST(fork->thrs); + + while (thr) { + que_graph_free_recursive(thr); + + thr = UT_LIST_GET_NEXT(thrs, thr); + } + + break; + case QUE_NODE_THR: + + thr = node; + + if (thr->magic_n != QUE_THR_MAGIC_N) { + fprintf(stderr, + "que_thr struct appears corrupt;" + " magic n %lu\n", + (unsigned long) thr->magic_n); + mem_analyze_corruption(thr); + ut_error; + } + + thr->magic_n = QUE_THR_MAGIC_FREED; + + que_graph_free_recursive(thr->child); + + break; + case QUE_NODE_UNDO: + + undo = node; + + mem_heap_free(undo->heap); + + break; + case QUE_NODE_SELECT: + + sel = node; + + sel_node_free_private(sel); + + break; + case QUE_NODE_INSERT: + + ins = node; + + que_graph_free_recursive(ins->select); + + mem_heap_free(ins->entry_sys_heap); + + break; + case QUE_NODE_UPDATE: + + upd = node; + + if (upd->in_mysql_interface) { + + btr_pcur_free_for_mysql(upd->pcur); + } + + que_graph_free_recursive(upd->cascade_node); + + if (upd->cascade_heap) { + mem_heap_free(upd->cascade_heap); + } + + que_graph_free_recursive(upd->select); + + mem_heap_free(upd->heap); + + break; + case QUE_NODE_CREATE_TABLE: + cre_tab = node; + + que_graph_free_recursive(cre_tab->tab_def); + que_graph_free_recursive(cre_tab->col_def); + que_graph_free_recursive(cre_tab->commit_node); + + mem_heap_free(cre_tab->heap); + + break; + case QUE_NODE_CREATE_INDEX: + cre_ind = node; + + que_graph_free_recursive(cre_ind->ind_def); + que_graph_free_recursive(cre_ind->field_def); + que_graph_free_recursive(cre_ind->commit_node); + + mem_heap_free(cre_ind->heap); + + break; + case QUE_NODE_PROC: + que_graph_free_stat_list(((proc_node_t*)node)->stat_list); + + break; + case QUE_NODE_IF: + que_graph_free_stat_list(((if_node_t*)node)->stat_list); + que_graph_free_stat_list(((if_node_t*)node)->else_part); + que_graph_free_stat_list(((if_node_t*)node)->elsif_list); + + break; + case QUE_NODE_ELSIF: + que_graph_free_stat_list(((elsif_node_t*)node)->stat_list); + + break; + case QUE_NODE_WHILE: + que_graph_free_stat_list(((while_node_t*)node)->stat_list); + + break; + case QUE_NODE_FOR: + que_graph_free_stat_list(((for_node_t*)node)->stat_list); + + break; + + case QUE_NODE_ASSIGNMENT: + case QUE_NODE_EXIT: + case QUE_NODE_RETURN: + case QUE_NODE_COMMIT: + case QUE_NODE_ROLLBACK: + case QUE_NODE_LOCK: + case QUE_NODE_FUNC: + case QUE_NODE_ORDER: + case QUE_NODE_ROW_PRINTF: + case QUE_NODE_OPEN: + case QUE_NODE_FETCH: + /* No need to do anything */ + + break; + default: + fprintf(stderr, + "que_node struct appears corrupt; type %lu\n", + (unsigned long) que_node_get_type(node)); + mem_analyze_corruption(node); + ut_error; + } +} + +/************************************************************************** +Frees a query graph. */ +UNIV_INTERN +void +que_graph_free( +/*===========*/ + que_t* graph) /* in: query graph; we assume that the memory + heap where this graph was created is private + to this graph: if not, then use + que_graph_free_recursive and free the heap + afterwards! */ +{ + ut_ad(graph); + + if (graph->sym_tab) { + /* The following call frees dynamic memory allocated + for variables etc. during execution. Frees also explicit + cursor definitions. */ + + sym_tab_free_private(graph->sym_tab); + } + + if (graph->info && graph->info->graph_owns_us) { + pars_info_free(graph->info); + } + + que_graph_free_recursive(graph); + + mem_heap_free(graph->heap); +} + +/************************************************************************** +Checks if the query graph is in a state where it should be freed, and +frees it in that case. If the session is in a state where it should be +closed, also this is done. */ +UNIV_INTERN +ibool +que_graph_try_free( +/*===============*/ + /* out: TRUE if freed */ + que_t* graph) /* in: query graph */ +{ + sess_t* sess; + + ut_ad(mutex_own(&kernel_mutex)); + + sess = (graph->trx)->sess; + + if ((graph->state == QUE_FORK_BEING_FREED) + && (graph->n_active_thrs == 0)) { + + UT_LIST_REMOVE(graphs, sess->graphs, graph); + que_graph_free(graph); + + sess_try_close(sess); + + return(TRUE); + } + + return(FALSE); +} + +/******************************************************************** +Performs an execution step on a thr node. */ +static +que_thr_t* +que_thr_node_step( +/*==============*/ + /* out: query thread to run next, or NULL + if none */ + que_thr_t* thr) /* in: query thread where run_node must + be the thread node itself */ +{ + ut_ad(thr->run_node == thr); + + if (thr->prev_node == thr->common.parent) { + /* If control to the node came from above, it is just passed + on */ + + thr->run_node = thr->child; + + return(thr); + } + + mutex_enter(&kernel_mutex); + + if (que_thr_peek_stop(thr)) { + + mutex_exit(&kernel_mutex); + + return(thr); + } + + /* Thread execution completed */ + + thr->state = QUE_THR_COMPLETED; + + mutex_exit(&kernel_mutex); + + return(NULL); +} + +/************************************************************************** +Moves a thread from another state to the QUE_THR_RUNNING state. Increments +the n_active_thrs counters of the query graph and transaction if thr was +not active. +***NOTE***: This and ..._mysql are the only functions in which such a +transition is allowed to happen! */ +static +void +que_thr_move_to_run_state( +/*======================*/ + que_thr_t* thr) /* in: an query thread */ +{ + trx_t* trx; + + ut_ad(thr->state != QUE_THR_RUNNING); + + trx = thr_get_trx(thr); + + if (!thr->is_active) { + + (thr->graph)->n_active_thrs++; + + trx->n_active_thrs++; + + thr->is_active = TRUE; + + ut_ad((thr->graph)->n_active_thrs == 1); + ut_ad(trx->n_active_thrs == 1); + } + + thr->state = QUE_THR_RUNNING; +} + +/************************************************************************** +Decrements the query thread reference counts in the query graph and the +transaction. May start signal handling, e.g., a rollback. +*** NOTE ***: +This and que_thr_stop_for_mysql are the only functions where the reference +count can be decremented and this function may only be called from inside +que_run_threads or que_thr_check_if_switch! These restrictions exist to make +the rollback code easier to maintain. */ +static +void +que_thr_dec_refer_count( +/*====================*/ + que_thr_t* thr, /* in: query thread */ + que_thr_t** next_thr) /* in/out: next query thread to run; + if the value which is passed in is + a pointer to a NULL pointer, then the + calling function can start running + a new query thread */ +{ + que_fork_t* fork; + trx_t* trx; + ulint fork_type; + ibool stopped; + + fork = thr->common.parent; + trx = thr_get_trx(thr); + + mutex_enter(&kernel_mutex); + + ut_a(thr->is_active); + + if (thr->state == QUE_THR_RUNNING) { + + stopped = que_thr_stop(thr); + + if (!stopped) { + /* The reason for the thr suspension or wait was + already canceled before we came here: continue + running the thread */ + + /* fputs("!!!!!!!! Wait already ended: continue thr\n", + stderr); */ + + if (next_thr && *next_thr == NULL) { + /* Normally srv_suspend_mysql_thread resets + the state to DB_SUCCESS before waiting, but + in this case we have to do it here, + otherwise nobody does it. */ + trx->error_state = DB_SUCCESS; + + *next_thr = thr; + } else { + ut_error; + srv_que_task_enqueue_low(thr); + } + + mutex_exit(&kernel_mutex); + + return; + } + } + + ut_ad(fork->n_active_thrs == 1); + ut_ad(trx->n_active_thrs == 1); + + fork->n_active_thrs--; + trx->n_active_thrs--; + + thr->is_active = FALSE; + + if (trx->n_active_thrs > 0) { + + mutex_exit(&kernel_mutex); + + return; + } + + fork_type = fork->fork_type; + + /* Check if all query threads in the same fork are completed */ + + if (que_fork_all_thrs_in_state(fork, QUE_THR_COMPLETED)) { + + switch (fork_type) { + case QUE_FORK_ROLLBACK: + /* This is really the undo graph used in rollback, + no roll_node in this graph */ + + ut_ad(UT_LIST_GET_LEN(trx->signals) > 0); + ut_ad(trx->handling_signals == TRUE); + + trx_finish_rollback_off_kernel(fork, trx, next_thr); + break; + + case QUE_FORK_PURGE: + case QUE_FORK_RECOVERY: + case QUE_FORK_MYSQL_INTERFACE: + + /* Do nothing */ + break; + + default: + ut_error; /* not used in MySQL */ + } + } + + if (UT_LIST_GET_LEN(trx->signals) > 0 && trx->n_active_thrs == 0) { + + /* If the trx is signaled and its query thread count drops to + zero, then we start processing a signal; from it we may get + a new query thread to run */ + + trx_sig_start_handle(trx, next_thr); + } + + if (trx->handling_signals && UT_LIST_GET_LEN(trx->signals) == 0) { + + trx_end_signal_handling(trx); + } + + mutex_exit(&kernel_mutex); +} + +/************************************************************************** +Stops a query thread if graph or trx is in a state requiring it. The +conditions are tested in the order (1) graph, (2) trx. The kernel mutex has +to be reserved. */ +UNIV_INTERN +ibool +que_thr_stop( +/*=========*/ + /* out: TRUE if stopped */ + que_thr_t* thr) /* in: query thread */ +{ + trx_t* trx; + que_t* graph; + ibool ret = TRUE; + + ut_ad(mutex_own(&kernel_mutex)); + + graph = thr->graph; + trx = graph->trx; + + if (graph->state == QUE_FORK_COMMAND_WAIT) { + thr->state = QUE_THR_SUSPENDED; + + } else if (trx->que_state == TRX_QUE_LOCK_WAIT) { + + UT_LIST_ADD_FIRST(trx_thrs, trx->wait_thrs, thr); + thr->state = QUE_THR_LOCK_WAIT; + + } else if (trx->error_state != DB_SUCCESS + && trx->error_state != DB_LOCK_WAIT) { + + /* Error handling built for the MySQL interface */ + thr->state = QUE_THR_COMPLETED; + + } else if (UT_LIST_GET_LEN(trx->signals) > 0 + && graph->fork_type != QUE_FORK_ROLLBACK) { + + thr->state = QUE_THR_SUSPENDED; + } else { + ut_ad(graph->state == QUE_FORK_ACTIVE); + + ret = FALSE; + } + + return(ret); +} + +/************************************************************************** +A patch for MySQL used to 'stop' a dummy query thread used in MySQL. The +query thread is stopped and made inactive, except in the case where +it was put to the lock wait state in lock0lock.c, but the lock has already +been granted or the transaction chosen as a victim in deadlock resolution. */ +UNIV_INTERN +void +que_thr_stop_for_mysql( +/*===================*/ + que_thr_t* thr) /* in: query thread */ +{ + trx_t* trx; + + trx = thr_get_trx(thr); + + mutex_enter(&kernel_mutex); + + if (thr->state == QUE_THR_RUNNING) { + + if (trx->error_state != DB_SUCCESS + && trx->error_state != DB_LOCK_WAIT) { + + /* Error handling built for the MySQL interface */ + thr->state = QUE_THR_COMPLETED; + } else { + /* It must have been a lock wait but the lock was + already released, or this transaction was chosen + as a victim in selective deadlock resolution */ + + mutex_exit(&kernel_mutex); + + return; + } + } + + ut_ad(thr->is_active == TRUE); + ut_ad(trx->n_active_thrs == 1); + ut_ad(thr->graph->n_active_thrs == 1); + + thr->is_active = FALSE; + (thr->graph)->n_active_thrs--; + + trx->n_active_thrs--; + + mutex_exit(&kernel_mutex); +} + +/************************************************************************** +Moves a thread from another state to the QUE_THR_RUNNING state. Increments +the n_active_thrs counters of the query graph and transaction if thr was +not active. */ +UNIV_INTERN +void +que_thr_move_to_run_state_for_mysql( +/*================================*/ + que_thr_t* thr, /* in: an query thread */ + trx_t* trx) /* in: transaction */ +{ + if (thr->magic_n != QUE_THR_MAGIC_N) { + fprintf(stderr, + "que_thr struct appears corrupt; magic n %lu\n", + (unsigned long) thr->magic_n); + + mem_analyze_corruption(thr); + + ut_error; + } + + if (!thr->is_active) { + + thr->graph->n_active_thrs++; + + trx->n_active_thrs++; + + thr->is_active = TRUE; + } + + thr->state = QUE_THR_RUNNING; +} + +/************************************************************************** +A patch for MySQL used to 'stop' a dummy query thread used in MySQL +select, when there is no error or lock wait. */ +UNIV_INTERN +void +que_thr_stop_for_mysql_no_error( +/*============================*/ + que_thr_t* thr, /* in: query thread */ + trx_t* trx) /* in: transaction */ +{ + ut_ad(thr->state == QUE_THR_RUNNING); + ut_ad(thr->is_active == TRUE); + ut_ad(trx->n_active_thrs == 1); + ut_ad(thr->graph->n_active_thrs == 1); + + if (thr->magic_n != QUE_THR_MAGIC_N) { + fprintf(stderr, + "que_thr struct appears corrupt; magic n %lu\n", + (unsigned long) thr->magic_n); + + mem_analyze_corruption(thr); + + ut_error; + } + + thr->state = QUE_THR_COMPLETED; + + thr->is_active = FALSE; + (thr->graph)->n_active_thrs--; + + trx->n_active_thrs--; +} + +/******************************************************************** +Get the first containing loop node (e.g. while_node_t or for_node_t) for the +given node, or NULL if the node is not within a loop. */ +UNIV_INTERN +que_node_t* +que_node_get_containing_loop_node( +/*==============================*/ + /* out: containing loop node, or NULL. */ + que_node_t* node) /* in: node */ +{ + ut_ad(node); + + for (;;) { + ulint type; + + node = que_node_get_parent(node); + + if (!node) { + break; + } + + type = que_node_get_type(node); + + if ((type == QUE_NODE_FOR) || (type == QUE_NODE_WHILE)) { + break; + } + } + + return(node); +} + +/************************************************************************** +Prints info of an SQL query graph node. */ +UNIV_INTERN +void +que_node_print_info( +/*================*/ + que_node_t* node) /* in: query graph node */ +{ + ulint type; + const char* str; + + type = que_node_get_type(node); + + if (type == QUE_NODE_SELECT) { + str = "SELECT"; + } else if (type == QUE_NODE_INSERT) { + str = "INSERT"; + } else if (type == QUE_NODE_UPDATE) { + str = "UPDATE"; + } else if (type == QUE_NODE_WHILE) { + str = "WHILE"; + } else if (type == QUE_NODE_ASSIGNMENT) { + str = "ASSIGNMENT"; + } else if (type == QUE_NODE_IF) { + str = "IF"; + } else if (type == QUE_NODE_FETCH) { + str = "FETCH"; + } else if (type == QUE_NODE_OPEN) { + str = "OPEN"; + } else if (type == QUE_NODE_PROC) { + str = "STORED PROCEDURE"; + } else if (type == QUE_NODE_FUNC) { + str = "FUNCTION"; + } else if (type == QUE_NODE_LOCK) { + str = "LOCK"; + } else if (type == QUE_NODE_THR) { + str = "QUERY THREAD"; + } else if (type == QUE_NODE_COMMIT) { + str = "COMMIT"; + } else if (type == QUE_NODE_UNDO) { + str = "UNDO ROW"; + } else if (type == QUE_NODE_PURGE) { + str = "PURGE ROW"; + } else if (type == QUE_NODE_ROLLBACK) { + str = "ROLLBACK"; + } else if (type == QUE_NODE_CREATE_TABLE) { + str = "CREATE TABLE"; + } else if (type == QUE_NODE_CREATE_INDEX) { + str = "CREATE INDEX"; + } else if (type == QUE_NODE_FOR) { + str = "FOR LOOP"; + } else if (type == QUE_NODE_RETURN) { + str = "RETURN"; + } else if (type == QUE_NODE_EXIT) { + str = "EXIT"; + } else { + str = "UNKNOWN NODE TYPE"; + } + + fprintf(stderr, "Node type %lu: %s, address %p\n", + (ulong) type, str, (void*) node); +} + +/************************************************************************** +Performs an execution step on a query thread. */ +UNIV_INLINE +que_thr_t* +que_thr_step( +/*=========*/ + /* out: query thread to run next: it may + differ from the input parameter if, e.g., a + subprocedure call is made */ + que_thr_t* thr) /* in: query thread */ +{ + que_node_t* node; + que_thr_t* old_thr; + trx_t* trx; + ulint type; + + trx = thr_get_trx(thr); + + ut_ad(thr->state == QUE_THR_RUNNING); + ut_a(trx->error_state == DB_SUCCESS); + + thr->resource++; + + node = thr->run_node; + type = que_node_get_type(node); + + old_thr = thr; + +#ifdef UNIV_DEBUG + if (que_trace_on) { + fputs("To execute: ", stderr); + que_node_print_info(node); + } +#endif + if (type & QUE_NODE_CONTROL_STAT) { + if ((thr->prev_node != que_node_get_parent(node)) + && que_node_get_next(thr->prev_node)) { + + /* The control statements, like WHILE, always pass the + control to the next child statement if there is any + child left */ + + thr->run_node = que_node_get_next(thr->prev_node); + + } else if (type == QUE_NODE_IF) { + if_step(thr); + } else if (type == QUE_NODE_FOR) { + for_step(thr); + } else if (type == QUE_NODE_PROC) { + + /* We can access trx->undo_no without reserving + trx->undo_mutex, because there cannot be active query + threads doing updating or inserting at the moment! */ + + if (thr->prev_node == que_node_get_parent(node)) { + trx->last_sql_stat_start.least_undo_no + = trx->undo_no; + } + + proc_step(thr); + } else if (type == QUE_NODE_WHILE) { + while_step(thr); + } else { + ut_error; + } + } else if (type == QUE_NODE_ASSIGNMENT) { + assign_step(thr); + } else if (type == QUE_NODE_SELECT) { + thr = row_sel_step(thr); + } else if (type == QUE_NODE_INSERT) { + thr = row_ins_step(thr); + } else if (type == QUE_NODE_UPDATE) { + thr = row_upd_step(thr); + } else if (type == QUE_NODE_FETCH) { + thr = fetch_step(thr); + } else if (type == QUE_NODE_OPEN) { + thr = open_step(thr); + } else if (type == QUE_NODE_FUNC) { + proc_eval_step(thr); + + } else if (type == QUE_NODE_LOCK) { + + ut_error; + /* + thr = que_lock_step(thr); + */ + } else if (type == QUE_NODE_THR) { + thr = que_thr_node_step(thr); + } else if (type == QUE_NODE_COMMIT) { + thr = trx_commit_step(thr); + } else if (type == QUE_NODE_UNDO) { + thr = row_undo_step(thr); + } else if (type == QUE_NODE_PURGE) { + thr = row_purge_step(thr); + } else if (type == QUE_NODE_RETURN) { + thr = return_step(thr); + } else if (type == QUE_NODE_EXIT) { + thr = exit_step(thr); + } else if (type == QUE_NODE_ROLLBACK) { + thr = trx_rollback_step(thr); + } else if (type == QUE_NODE_CREATE_TABLE) { + thr = dict_create_table_step(thr); + } else if (type == QUE_NODE_CREATE_INDEX) { + thr = dict_create_index_step(thr); + } else if (type == QUE_NODE_ROW_PRINTF) { + thr = row_printf_step(thr); + } else { + ut_error; + } + + if (type == QUE_NODE_EXIT) { + old_thr->prev_node = que_node_get_containing_loop_node(node); + } else { + old_thr->prev_node = node; + } + + if (thr) { + ut_a(thr_get_trx(thr)->error_state == DB_SUCCESS); + } + + return(thr); +} + +/************************************************************************** +Run a query thread until it finishes or encounters e.g. a lock wait. */ +static +void +que_run_threads_low( +/*================*/ + que_thr_t* thr) /* in: query thread */ +{ + que_thr_t* next_thr; + ulint cumul_resource; + ulint loop_count; + + ut_ad(thr->state == QUE_THR_RUNNING); + ut_a(thr_get_trx(thr)->error_state == DB_SUCCESS); + ut_ad(!mutex_own(&kernel_mutex)); + + /* cumul_resource counts how much resources the OS thread (NOT the + query thread) has spent in this function */ + + loop_count = QUE_MAX_LOOPS_WITHOUT_CHECK; + cumul_resource = 0; +loop: + /* Check that there is enough space in the log to accommodate + possible log entries by this query step; if the operation can touch + more than about 4 pages, checks must be made also within the query + step! */ + + log_free_check(); + + /* Perform the actual query step: note that the query thread + may change if, e.g., a subprocedure call is made */ + + /*-------------------------*/ + next_thr = que_thr_step(thr); + /*-------------------------*/ + + ut_a(!next_thr || (thr_get_trx(next_thr)->error_state == DB_SUCCESS)); + + loop_count++; + + if (next_thr != thr) { + ut_a(next_thr == NULL); + + /* This can change next_thr to a non-NULL value if there was + a lock wait that already completed. */ + que_thr_dec_refer_count(thr, &next_thr); + + if (next_thr == NULL) { + + return; + } + + loop_count = QUE_MAX_LOOPS_WITHOUT_CHECK; + + thr = next_thr; + } + + goto loop; +} + +/************************************************************************** +Run a query thread. Handles lock waits. */ +UNIV_INTERN +void +que_run_threads( +/*============*/ + que_thr_t* thr) /* in: query thread */ +{ +loop: + ut_a(thr_get_trx(thr)->error_state == DB_SUCCESS); + que_run_threads_low(thr); + + mutex_enter(&kernel_mutex); + + switch (thr->state) { + + case QUE_THR_RUNNING: + /* There probably was a lock wait, but it already ended + before we came here: continue running thr */ + + mutex_exit(&kernel_mutex); + + goto loop; + + case QUE_THR_LOCK_WAIT: + mutex_exit(&kernel_mutex); + + /* The ..._mysql_... function works also for InnoDB's + internal threads. Let us wait that the lock wait ends. */ + + srv_suspend_mysql_thread(thr); + + if (thr_get_trx(thr)->error_state != DB_SUCCESS) { + /* thr was chosen as a deadlock victim or there was + a lock wait timeout */ + + que_thr_dec_refer_count(thr, NULL); + + return; + } + + goto loop; + + case QUE_THR_COMPLETED: + case QUE_THR_COMMAND_WAIT: + /* Do nothing */ + break; + + default: + ut_error; + } + + mutex_exit(&kernel_mutex); +} + +/************************************************************************* +Evaluate the given SQL. */ +UNIV_INTERN +ulint +que_eval_sql( +/*=========*/ + /* out: error code or DB_SUCCESS */ + pars_info_t* info, /* in: info struct, or NULL */ + const char* sql, /* in: SQL string */ + ibool reserve_dict_mutex, + /* in: if TRUE, acquire/release + dict_sys->mutex around call to pars_sql. */ + trx_t* trx) /* in: trx */ +{ + que_thr_t* thr; + que_t* graph; + + ut_a(trx->error_state == DB_SUCCESS); + + if (reserve_dict_mutex) { + mutex_enter(&dict_sys->mutex); + } + + graph = pars_sql(info, sql); + + if (reserve_dict_mutex) { + mutex_exit(&dict_sys->mutex); + } + + ut_a(graph); + + graph->trx = trx; + trx->graph = NULL; + + graph->fork_type = QUE_FORK_MYSQL_INTERFACE; + + ut_a(thr = que_fork_start_command(graph)); + + que_run_threads(thr); + + que_graph_free(graph); + + return(trx->error_state); +} === added directory 'storage/xtradb/read' === added file 'storage/xtradb/read/read0read.c' --- a/storage/xtradb/read/read0read.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/read/read0read.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,538 @@ +/***************************************************************************** + +Copyright (c) 1997, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Cursor read + +Created 2/16/1997 Heikki Tuuri +*******************************************************/ + +#include "read0read.h" + +#ifdef UNIV_NONINL +#include "read0read.ic" +#endif + +#include "srv0srv.h" +#include "trx0sys.h" + +/* +------------------------------------------------------------------------------- +FACT A: Cursor read view on a secondary index sees only committed versions +------- +of the records in the secondary index or those versions of rows created +by transaction which created a cursor before cursor was created even +if transaction which created the cursor has changed that clustered index page. + +PROOF: We must show that read goes always to the clustered index record +to see that record is visible in the cursor read view. Consider e.g. +following table and SQL-clauses: + +create table t1(a int not null, b int, primary key(a), index(b)); +insert into t1 values (1,1),(2,2); +commit; + +Now consider that we have a cursor for a query + +select b from t1 where b >= 1; + +This query will use secondary key on the table t1. Now after the first fetch +on this cursor if we do a update: + +update t1 set b = 5 where b = 2; + +Now second fetch of the cursor should not see record (2,5) instead it should +see record (2,2). + +We also should show that if we have delete t1 where b = 5; we still +can see record (2,2). + +When we access a secondary key record maximum transaction id is fetched +from this record and this trx_id is compared to up_limit_id in the view. +If trx_id in the record is greater or equal than up_limit_id in the view +cluster record is accessed. Because trx_id of the creating +transaction is stored when this view was created to the list of +trx_ids not seen by this read view previous version of the +record is requested to be built. This is build using clustered record. +If the secondary key record is delete marked it's corresponding +clustered record can be already be purged only if records +trx_id < low_limit_no. Purge can't remove any record deleted by a +transaction which was active when cursor was created. But, we still +may have a deleted secondary key record but no clustered record. But, +this is not a problem because this case is handled in +row_sel_get_clust_rec() function which is called +whenever we note that this read view does not see trx_id in the +record. Thus, we see correct version. Q. E. D. + +------------------------------------------------------------------------------- +FACT B: Cursor read view on a clustered index sees only committed versions +------- +of the records in the clustered index or those versions of rows created +by transaction which created a cursor before cursor was created even +if transaction which created the cursor has changed that clustered index page. + +PROOF: Consider e.g.following table and SQL-clauses: + +create table t1(a int not null, b int, primary key(a)); +insert into t1 values (1),(2); +commit; + +Now consider that we have a cursor for a query + +select a from t1 where a >= 1; + +This query will use clustered key on the table t1. Now after the first fetch +on this cursor if we do a update: + +update t1 set a = 5 where a = 2; + +Now second fetch of the cursor should not see record (5) instead it should +see record (2). + +We also should show that if we have execute delete t1 where a = 5; after +the cursor is opened we still can see record (2). + +When accessing clustered record we always check if this read view sees +trx_id stored to clustered record. By default we don't see any changes +if record trx_id >= low_limit_id i.e. change was made transaction +which started after transaction which created the cursor. If row +was changed by the future transaction a previous version of the +clustered record is created. Thus we see only committed version in +this case. We see all changes made by committed transactions i.e. +record trx_id < up_limit_id. In this case we don't need to do anything, +we already see correct version of the record. We don't see any changes +made by active transaction except creating transaction. We have stored +trx_id of creating transaction to list of trx_ids when this view was +created. Thus we can easily see if this record was changed by the +creating transaction. Because we already have clustered record we can +access roll_ptr. Using this roll_ptr we can fetch undo record. +We can now check that undo_no of the undo record is less than undo_no of the +trancaction which created a view when cursor was created. We see this +clustered record only in case when record undo_no is less than undo_no +in the view. If this is not true we build based on undo_rec previous +version of the record. This record is found because purge can't remove +records accessed by active transaction. Thus we see correct version. Q. E. D. +------------------------------------------------------------------------------- +FACT C: Purge does not remove any delete marked row that is visible +------- +to cursor view. + +TODO: proof this + +*/ + +/************************************************************************* +Creates a read view object. */ +UNIV_INLINE +read_view_t* +read_view_create_low( +/*=================*/ + /* out, own: read view struct */ + ulint n, /* in: number of cells in the trx_ids array */ + mem_heap_t* heap) /* in: memory heap from which allocated */ +{ + read_view_t* view; + + view = mem_heap_alloc(heap, sizeof(read_view_t)); + + view->n_trx_ids = n; + view->trx_ids = mem_heap_alloc(heap, n * sizeof(dulint)); + + return(view); +} + +/************************************************************************* +Makes a copy of the oldest existing read view, with the exception that also +the creating trx of the oldest view is set as not visible in the 'copied' +view. Opens a new view if no views currently exist. The view must be closed +with ..._close. This is used in purge. */ +UNIV_INTERN +read_view_t* +read_view_oldest_copy_or_open_new( +/*==============================*/ + /* out, own: read view struct */ + dulint cr_trx_id, /* in: trx_id of creating + transaction, or (0, 0) used in purge*/ + mem_heap_t* heap) /* in: memory heap from which + allocated */ +{ + read_view_t* old_view; + read_view_t* view_copy; + ibool needs_insert = TRUE; + ulint insert_done = 0; + ulint n; + ulint i; + + ut_ad(mutex_own(&kernel_mutex)); + + old_view = UT_LIST_GET_LAST(trx_sys->view_list); + + if (old_view == NULL) { + + return(read_view_open_now(cr_trx_id, heap)); + } + + n = old_view->n_trx_ids; + + if (!ut_dulint_is_zero(old_view->creator_trx_id)) { + n++; + } else { + needs_insert = FALSE; + } + + view_copy = read_view_create_low(n, heap); + + /* Insert the id of the creator in the right place of the descending + array of ids, if needs_insert is TRUE: */ + + i = 0; + while (i < n) { + if (needs_insert + && (i >= old_view->n_trx_ids + || ut_dulint_cmp(old_view->creator_trx_id, + read_view_get_nth_trx_id(old_view, i)) + > 0)) { + + read_view_set_nth_trx_id(view_copy, i, + old_view->creator_trx_id); + needs_insert = FALSE; + insert_done = 1; + } else { + read_view_set_nth_trx_id(view_copy, i, + read_view_get_nth_trx_id( + old_view, + i - insert_done)); + } + + i++; + } + + view_copy->creator_trx_id = cr_trx_id; + + view_copy->low_limit_no = old_view->low_limit_no; + view_copy->low_limit_id = old_view->low_limit_id; + + + if (n > 0) { + /* The last active transaction has the smallest id: */ + view_copy->up_limit_id = read_view_get_nth_trx_id( + view_copy, n - 1); + } else { + view_copy->up_limit_id = old_view->up_limit_id; + } + + UT_LIST_ADD_LAST(view_list, trx_sys->view_list, view_copy); + + return(view_copy); +} + +/************************************************************************* +Opens a read view where exactly the transactions serialized before this +point in time are seen in the view. */ +UNIV_INTERN +read_view_t* +read_view_open_now( +/*===============*/ + /* out, own: read view struct */ + dulint cr_trx_id, /* in: trx_id of creating + transaction, or (0, 0) used in + purge */ + mem_heap_t* heap) /* in: memory heap from which + allocated */ +{ + read_view_t* view; + trx_t* trx; + ulint n; + + ut_ad(mutex_own(&kernel_mutex)); + + view = read_view_create_low(UT_LIST_GET_LEN(trx_sys->trx_list), heap); + + view->creator_trx_id = cr_trx_id; + view->type = VIEW_NORMAL; + view->undo_no = ut_dulint_zero; + + /* No future transactions should be visible in the view */ + + view->low_limit_no = trx_sys->max_trx_id; + view->low_limit_id = view->low_limit_no; + + n = 0; + trx = UT_LIST_GET_FIRST(trx_sys->trx_list); + + /* No active transaction should be visible, except cr_trx */ + + while (trx) { + if (ut_dulint_cmp(trx->id, cr_trx_id) != 0 + && (trx->conc_state == TRX_ACTIVE + || trx->conc_state == TRX_PREPARED)) { + + read_view_set_nth_trx_id(view, n, trx->id); + + n++; + + /* NOTE that a transaction whose trx number is < + trx_sys->max_trx_id can still be active, if it is + in the middle of its commit! Note that when a + transaction starts, we initialize trx->no to + ut_dulint_max. */ + + if (ut_dulint_cmp(view->low_limit_no, trx->no) > 0) { + + view->low_limit_no = trx->no; + } + } + + trx = UT_LIST_GET_NEXT(trx_list, trx); + } + + view->n_trx_ids = n; + + if (n > 0) { + /* The last active transaction has the smallest id: */ + view->up_limit_id = read_view_get_nth_trx_id(view, n - 1); + } else { + view->up_limit_id = view->low_limit_id; + } + + + UT_LIST_ADD_FIRST(view_list, trx_sys->view_list, view); + + return(view); +} + +/************************************************************************* +Closes a read view. */ +UNIV_INTERN +void +read_view_close( +/*============*/ + read_view_t* view) /* in: read view */ +{ + ut_ad(mutex_own(&kernel_mutex)); + + UT_LIST_REMOVE(view_list, trx_sys->view_list, view); +} + +/************************************************************************* +Closes a consistent read view for MySQL. This function is called at an SQL +statement end if the trx isolation level is <= TRX_ISO_READ_COMMITTED. */ +UNIV_INTERN +void +read_view_close_for_mysql( +/*======================*/ + trx_t* trx) /* in: trx which has a read view */ +{ + ut_a(trx->global_read_view); + + mutex_enter(&kernel_mutex); + + read_view_close(trx->global_read_view); + + mem_heap_empty(trx->global_read_view_heap); + + trx->read_view = NULL; + trx->global_read_view = NULL; + + mutex_exit(&kernel_mutex); +} + +/************************************************************************* +Prints a read view to stderr. */ +UNIV_INTERN +void +read_view_print( +/*============*/ + read_view_t* view) /* in: read view */ +{ + ulint n_ids; + ulint i; + + if (view->type == VIEW_HIGH_GRANULARITY) { + fprintf(stderr, + "High-granularity read view undo_n:o %lu %lu\n", + (ulong) ut_dulint_get_high(view->undo_no), + (ulong) ut_dulint_get_low(view->undo_no)); + } else { + fprintf(stderr, "Normal read view\n"); + } + + fprintf(stderr, "Read view low limit trx n:o %lu %lu\n", + (ulong) ut_dulint_get_high(view->low_limit_no), + (ulong) ut_dulint_get_low(view->low_limit_no)); + + fprintf(stderr, "Read view up limit trx id " TRX_ID_FMT "\n", + TRX_ID_PREP_PRINTF(view->up_limit_id)); + + fprintf(stderr, "Read view low limit trx id " TRX_ID_FMT "\n", + TRX_ID_PREP_PRINTF(view->low_limit_id)); + + fprintf(stderr, "Read view individually stored trx ids:\n"); + + n_ids = view->n_trx_ids; + + for (i = 0; i < n_ids; i++) { + fprintf(stderr, "Read view trx id " TRX_ID_FMT "\n", + TRX_ID_PREP_PRINTF( + read_view_get_nth_trx_id(view, i))); + } +} + +/************************************************************************* +Create a high-granularity consistent cursor view for mysql to be used +in cursors. In this consistent read view modifications done by the +creating transaction after the cursor is created or future transactions +are not visible. */ +UNIV_INTERN +cursor_view_t* +read_cursor_view_create_for_mysql( +/*==============================*/ + trx_t* cr_trx) /* in: trx where cursor view is created */ +{ + cursor_view_t* curview; + read_view_t* view; + mem_heap_t* heap; + trx_t* trx; + ulint n; + + ut_a(cr_trx); + + /* Use larger heap than in trx_create when creating a read_view + because cursors are quite long. */ + + heap = mem_heap_create(512); + + curview = (cursor_view_t*) mem_heap_alloc(heap, sizeof(cursor_view_t)); + curview->heap = heap; + + /* Drop cursor tables from consideration when evaluating the need of + auto-commit */ + curview->n_mysql_tables_in_use = cr_trx->n_mysql_tables_in_use; + cr_trx->n_mysql_tables_in_use = 0; + + mutex_enter(&kernel_mutex); + + curview->read_view = read_view_create_low( + UT_LIST_GET_LEN(trx_sys->trx_list), curview->heap); + + view = curview->read_view; + view->creator_trx_id = cr_trx->id; + view->type = VIEW_HIGH_GRANULARITY; + view->undo_no = cr_trx->undo_no; + + /* No future transactions should be visible in the view */ + + view->low_limit_no = trx_sys->max_trx_id; + view->low_limit_id = view->low_limit_no; + + n = 0; + trx = UT_LIST_GET_FIRST(trx_sys->trx_list); + + /* No active transaction should be visible */ + + while (trx) { + + if (trx->conc_state == TRX_ACTIVE + || trx->conc_state == TRX_PREPARED) { + + read_view_set_nth_trx_id(view, n, trx->id); + + n++; + + /* NOTE that a transaction whose trx number is < + trx_sys->max_trx_id can still be active, if it is + in the middle of its commit! Note that when a + transaction starts, we initialize trx->no to + ut_dulint_max. */ + + if (ut_dulint_cmp(view->low_limit_no, trx->no) > 0) { + + view->low_limit_no = trx->no; + } + } + + trx = UT_LIST_GET_NEXT(trx_list, trx); + } + + view->n_trx_ids = n; + + if (n > 0) { + /* The last active transaction has the smallest id: */ + view->up_limit_id = read_view_get_nth_trx_id(view, n - 1); + } else { + view->up_limit_id = view->low_limit_id; + } + + UT_LIST_ADD_FIRST(view_list, trx_sys->view_list, view); + + mutex_exit(&kernel_mutex); + + return(curview); +} + +/************************************************************************* +Close a given consistent cursor view for mysql and restore global read view +back to a transaction read view. */ +UNIV_INTERN +void +read_cursor_view_close_for_mysql( +/*=============================*/ + trx_t* trx, /* in: trx */ + cursor_view_t* curview)/* in: cursor view to be closed */ +{ + ut_a(curview); + ut_a(curview->read_view); + ut_a(curview->heap); + + /* Add cursor's tables to the global count of active tables that + belong to this transaction */ + trx->n_mysql_tables_in_use += curview->n_mysql_tables_in_use; + + mutex_enter(&kernel_mutex); + + read_view_close(curview->read_view); + trx->read_view = trx->global_read_view; + + mutex_exit(&kernel_mutex); + + mem_heap_free(curview->heap); +} + +/************************************************************************* +This function sets a given consistent cursor view to a transaction +read view if given consistent cursor view is not NULL. Otherwise, function +restores a global read view to a transaction read view. */ +UNIV_INTERN +void +read_cursor_set_for_mysql( +/*======================*/ + trx_t* trx, /* in: transaction where cursor is set */ + cursor_view_t* curview)/* in: consistent cursor view to be set */ +{ + ut_a(trx); + + mutex_enter(&kernel_mutex); + + if (UNIV_LIKELY(curview != NULL)) { + trx->read_view = curview->read_view; + } else { + trx->read_view = trx->global_read_view; + } + + mutex_exit(&kernel_mutex); +} === added directory 'storage/xtradb/rem' === added file 'storage/xtradb/rem/rem0cmp.c' --- a/storage/xtradb/rem/rem0cmp.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/rem/rem0cmp.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,1234 @@ +/***************************************************************************** + +Copyright (c) 1994, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/*********************************************************************** +Comparison services for records + +Created 7/1/1994 Heikki Tuuri +************************************************************************/ + +#include "rem0cmp.h" + +#ifdef UNIV_NONINL +#include "rem0cmp.ic" +#endif + +#include "srv0srv.h" + +/* ALPHABETICAL ORDER + ================== + +The records are put into alphabetical order in the following +way: let F be the first field where two records disagree. +If there is a character in some position n where the the +records disagree, the order is determined by comparison of +the characters at position n, possibly after +collating transformation. If there is no such character, +but the corresponding fields have different lengths, then +if the data type of the fields is paddable, +shorter field is padded with a padding character. If the +data type is not paddable, longer field is considered greater. +Finally, the SQL null is bigger than any other value. + +At the present, the comparison functions return 0 in the case, +where two records disagree only in the way that one +has more fields than the other. */ + +#ifdef UNIV_DEBUG +/***************************************************************** +Used in debug checking of cmp_dtuple_... . +This function is used to compare a data tuple to a physical record. If +dtuple has n fields then rec must have either m >= n fields, or it must +differ from dtuple in some of the m fields rec has. */ +static +int +cmp_debug_dtuple_rec_with_match( +/*============================*/ + /* out: 1, 0, -1, if dtuple is greater, equal, + less than rec, respectively, when only the + common first fields are compared */ + const dtuple_t* dtuple, /* in: data tuple */ + const rec_t* rec, /* in: physical record which differs from + dtuple in some of the common fields, or which + has an equal number or more fields than + dtuple */ + const ulint* offsets,/* in: array returned by rec_get_offsets() */ + ulint* matched_fields);/* in/out: number of already + completely matched fields; when function + returns, contains the value for current + comparison */ +#endif /* UNIV_DEBUG */ +#ifndef UNIV_HOTBACKUP +/***************************************************************** +This function is used to compare two data fields for which the data type +is such that we must use MySQL code to compare them. The prototype here +must be a copy of the the one in ha_innobase.cc! */ +extern +int +innobase_mysql_cmp( +/*===============*/ + /* out: 1, 0, -1, if a is greater, + equal, less than b, respectively */ + int mysql_type, /* in: MySQL type */ + uint charset_number, /* in: number of the charset */ + const unsigned char* a, /* in: data field */ + unsigned int a_length, /* in: data field length, + not UNIV_SQL_NULL */ + const unsigned char* b, /* in: data field */ + unsigned int b_length); /* in: data field length, + not UNIV_SQL_NULL */ +#endif /* !UNIV_HOTBACKUP */ +/************************************************************************* +Transforms the character code so that it is ordered appropriately for the +language. This is only used for the latin1 char set. MySQL does the +comparisons for other char sets. */ +UNIV_INLINE +ulint +cmp_collate( +/*========*/ + /* out: collation order position */ + ulint code) /* in: code of a character stored in database record */ +{ + return((ulint) srv_latin1_ordering[code]); +} + +/***************************************************************** +Returns TRUE if two columns are equal for comparison purposes. */ +UNIV_INTERN +ibool +cmp_cols_are_equal( +/*===============*/ + /* out: TRUE if the columns are + considered equal in comparisons */ + const dict_col_t* col1, /* in: column 1 */ + const dict_col_t* col2, /* in: column 2 */ + ibool check_charsets) + /* in: whether to check charsets */ +{ + if (dtype_is_non_binary_string_type(col1->mtype, col1->prtype) + && dtype_is_non_binary_string_type(col2->mtype, col2->prtype)) { + + /* Both are non-binary string types: they can be compared if + and only if the charset-collation is the same */ + + if (check_charsets) { + return(dtype_get_charset_coll(col1->prtype) + == dtype_get_charset_coll(col2->prtype)); + } else { + return(TRUE); + } + } + + if (dtype_is_binary_string_type(col1->mtype, col1->prtype) + && dtype_is_binary_string_type(col2->mtype, col2->prtype)) { + + /* Both are binary string types: they can be compared */ + + return(TRUE); + } + + if (col1->mtype != col2->mtype) { + + return(FALSE); + } + + if (col1->mtype == DATA_INT + && (col1->prtype & DATA_UNSIGNED) + != (col2->prtype & DATA_UNSIGNED)) { + + /* The storage format of an unsigned integer is different + from a signed integer: in a signed integer we OR + 0x8000... to the value of positive integers. */ + + return(FALSE); + } + + return(col1->mtype != DATA_INT || col1->len == col2->len); +} + +#ifndef UNIV_HOTBACKUP +/***************************************************************** +Innobase uses this function to compare two data fields for which the data type +is such that we must compare whole fields or call MySQL to do the comparison */ +static +int +cmp_whole_field( +/*============*/ + /* out: 1, 0, -1, if a is greater, + equal, less than b, respectively */ + ulint mtype, /* in: main type */ + ulint prtype, /* in: precise type */ + const byte* a, /* in: data field */ + unsigned int a_length, /* in: data field length, + not UNIV_SQL_NULL */ + const byte* b, /* in: data field */ + unsigned int b_length) /* in: data field length, + not UNIV_SQL_NULL */ +{ + float f_1; + float f_2; + double d_1; + double d_2; + int swap_flag = 1; + + switch (mtype) { + + case DATA_DECIMAL: + /* Remove preceding spaces */ + for (; a_length && *a == ' '; a++, a_length--); + for (; b_length && *b == ' '; b++, b_length--); + + if (*a == '-') { + if (*b != '-') { + return(-1); + } + + a++; b++; + a_length--; + b_length--; + + swap_flag = -1; + + } else if (*b == '-') { + + return(1); + } + + while (a_length > 0 && (*a == '+' || *a == '0')) { + a++; a_length--; + } + + while (b_length > 0 && (*b == '+' || *b == '0')) { + b++; b_length--; + } + + if (a_length != b_length) { + if (a_length < b_length) { + return(-swap_flag); + } + + return(swap_flag); + } + + while (a_length > 0 && *a == *b) { + + a++; b++; a_length--; + } + + if (a_length == 0) { + + return(0); + } + + if (*a > *b) { + return(swap_flag); + } + + return(-swap_flag); + case DATA_DOUBLE: + d_1 = mach_double_read(a); + d_2 = mach_double_read(b); + + if (d_1 > d_2) { + return(1); + } else if (d_2 > d_1) { + return(-1); + } + + return(0); + + case DATA_FLOAT: + f_1 = mach_float_read(a); + f_2 = mach_float_read(b); + + if (f_1 > f_2) { + return(1); + } else if (f_2 > f_1) { + return(-1); + } + + return(0); + case DATA_BLOB: + if (prtype & DATA_BINARY_TYPE) { + + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: Error: comparing a binary BLOB" + " with a character set sensitive\n" + "InnoDB: comparison!\n"); + } + /* fall through */ + case DATA_VARMYSQL: + case DATA_MYSQL: + return(innobase_mysql_cmp( + (int)(prtype & DATA_MYSQL_TYPE_MASK), + (uint)dtype_get_charset_coll(prtype), + a, a_length, b, b_length)); + default: + fprintf(stderr, + "InnoDB: unknown type number %lu\n", + (ulong) mtype); + ut_error; + } + + return(0); +} +#endif /* !UNIV_HOTBACKUP */ + +/***************************************************************** +This function is used to compare two data fields for which we know the +data type. */ +UNIV_INTERN +int +cmp_data_data_slow( +/*===============*/ + /* out: 1, 0, -1, if data1 is greater, equal, + less than data2, respectively */ + ulint mtype, /* in: main type */ + ulint prtype, /* in: precise type */ + const byte* data1, /* in: data field (== a pointer to a memory + buffer) */ + ulint len1, /* in: data field length or UNIV_SQL_NULL */ + const byte* data2, /* in: data field (== a pointer to a memory + buffer) */ + ulint len2) /* in: data field length or UNIV_SQL_NULL */ +{ +#ifndef UNIV_HOTBACKUP + ulint data1_byte; + ulint data2_byte; + ulint cur_bytes; + + if (len1 == UNIV_SQL_NULL || len2 == UNIV_SQL_NULL) { + + if (len1 == len2) { + + return(0); + } + + if (len1 == UNIV_SQL_NULL) { + /* We define the SQL null to be the smallest possible + value of a field in the alphabetical order */ + + return(-1); + } + + return(1); + } + + if (mtype >= DATA_FLOAT + || (mtype == DATA_BLOB + && 0 == (prtype & DATA_BINARY_TYPE) + && dtype_get_charset_coll(prtype) + != DATA_MYSQL_LATIN1_SWEDISH_CHARSET_COLL)) { + + return(cmp_whole_field(mtype, prtype, + data1, (unsigned) len1, + data2, (unsigned) len2)); + } + + /* Compare then the fields */ + + cur_bytes = 0; + + for (;;) { + if (len1 <= cur_bytes) { + if (len2 <= cur_bytes) { + + return(0); + } + + data1_byte = dtype_get_pad_char(mtype, prtype); + + if (data1_byte == ULINT_UNDEFINED) { + + return(-1); + } + } else { + data1_byte = *data1; + } + + if (len2 <= cur_bytes) { + data2_byte = dtype_get_pad_char(mtype, prtype); + + if (data2_byte == ULINT_UNDEFINED) { + + return(1); + } + } else { + data2_byte = *data2; + } + + if (data1_byte == data2_byte) { + /* If the bytes are equal, they will remain such even + after the collation transformation below */ + + goto next_byte; + } + + if (mtype <= DATA_CHAR + || (mtype == DATA_BLOB + && 0 == (prtype & DATA_BINARY_TYPE))) { + + data1_byte = cmp_collate(data1_byte); + data2_byte = cmp_collate(data2_byte); + } + + if (data1_byte > data2_byte) { + + return(1); + } else if (data1_byte < data2_byte) { + + return(-1); + } +next_byte: + /* Next byte */ + cur_bytes++; + data1++; + data2++; + } +#else /* !UNIV_HOTBACKUP */ + /* This function depends on MySQL code that is not included in + InnoDB Hot Backup builds. Besides, this function should never + be called in InnoDB Hot Backup. */ + ut_error; +#endif /* !UNIV_HOTBACKUP */ + + return(0); /* Not reached */ +} + +/***************************************************************** +This function is used to compare a data tuple to a physical record. +Only dtuple->n_fields_cmp first fields are taken into account for +the the data tuple! If we denote by n = n_fields_cmp, then rec must +have either m >= n fields, or it must differ from dtuple in some of +the m fields rec has. If rec has an externally stored field we do not +compare it but return with value 0 if such a comparison should be +made. */ +UNIV_INTERN +int +cmp_dtuple_rec_with_match( +/*======================*/ + /* out: 1, 0, -1, if dtuple is greater, equal, + less than rec, respectively, when only the + common first fields are compared, or + until the first externally stored field in + rec */ + const dtuple_t* dtuple, /* in: data tuple */ + const rec_t* rec, /* in: physical record which differs from + dtuple in some of the common fields, or which + has an equal number or more fields than + dtuple */ + const ulint* offsets,/* in: array returned by rec_get_offsets() */ + ulint* matched_fields, /* in/out: number of already completely + matched fields; when function returns, + contains the value for current comparison */ + ulint* matched_bytes) /* in/out: number of already matched + bytes within the first field not completely + matched; when function returns, contains the + value for current comparison */ +{ +#ifndef UNIV_HOTBACKUP + const dfield_t* dtuple_field; /* current field in logical record */ + ulint dtuple_f_len; /* the length of the current field + in the logical record */ + const byte* dtuple_b_ptr; /* pointer to the current byte in + logical field data */ + ulint dtuple_byte; /* value of current byte to be compared + in dtuple*/ + ulint rec_f_len; /* length of current field in rec */ + const byte* rec_b_ptr; /* pointer to the current byte in + rec field */ + ulint rec_byte; /* value of current byte to be + compared in rec */ + ulint cur_field; /* current field number */ + ulint cur_bytes; /* number of already matched bytes + in current field */ + int ret = 3333; /* return value */ + + ut_ad(dtuple && rec && matched_fields && matched_bytes); + ut_ad(dtuple_check_typed(dtuple)); + ut_ad(rec_offs_validate(rec, NULL, offsets)); + + cur_field = *matched_fields; + cur_bytes = *matched_bytes; + + ut_ad(cur_field <= dtuple_get_n_fields_cmp(dtuple)); + ut_ad(cur_field <= rec_offs_n_fields(offsets)); + + if (cur_bytes == 0 && cur_field == 0) { + ulint rec_info = rec_get_info_bits(rec, + rec_offs_comp(offsets)); + ulint tup_info = dtuple_get_info_bits(dtuple); + + if (UNIV_UNLIKELY(rec_info & REC_INFO_MIN_REC_FLAG)) { + ret = !(tup_info & REC_INFO_MIN_REC_FLAG); + goto order_resolved; + } else if (UNIV_UNLIKELY(tup_info & REC_INFO_MIN_REC_FLAG)) { + ret = -1; + goto order_resolved; + } + } + + /* Match fields in a loop; stop if we run out of fields in dtuple + or find an externally stored field */ + + while (cur_field < dtuple_get_n_fields_cmp(dtuple)) { + + ulint mtype; + ulint prtype; + + dtuple_field = dtuple_get_nth_field(dtuple, cur_field); + { + const dtype_t* type + = dfield_get_type(dtuple_field); + + mtype = type->mtype; + prtype = type->prtype; + } + + dtuple_f_len = dfield_get_len(dtuple_field); + + rec_b_ptr = rec_get_nth_field(rec, offsets, + cur_field, &rec_f_len); + + /* If we have matched yet 0 bytes, it may be that one or + both the fields are SQL null, or the record or dtuple may be + the predefined minimum record, or the field is externally + stored */ + + if (UNIV_LIKELY(cur_bytes == 0)) { + if (rec_offs_nth_extern(offsets, cur_field)) { + /* We do not compare to an externally + stored field */ + + ret = 0; + + goto order_resolved; + } + + if (dtuple_f_len == UNIV_SQL_NULL) { + if (rec_f_len == UNIV_SQL_NULL) { + + goto next_field; + } + + ret = -1; + goto order_resolved; + } else if (rec_f_len == UNIV_SQL_NULL) { + /* We define the SQL null to be the + smallest possible value of a field + in the alphabetical order */ + + ret = 1; + goto order_resolved; + } + } + + if (mtype >= DATA_FLOAT + || (mtype == DATA_BLOB + && 0 == (prtype & DATA_BINARY_TYPE) + && dtype_get_charset_coll(prtype) + != DATA_MYSQL_LATIN1_SWEDISH_CHARSET_COLL)) { + + ret = cmp_whole_field(mtype, prtype, + dfield_get_data(dtuple_field), + (unsigned) dtuple_f_len, + rec_b_ptr, (unsigned) rec_f_len); + + if (ret != 0) { + cur_bytes = 0; + + goto order_resolved; + } else { + goto next_field; + } + } + + /* Set the pointers at the current byte */ + + rec_b_ptr = rec_b_ptr + cur_bytes; + dtuple_b_ptr = (byte*)dfield_get_data(dtuple_field) + + cur_bytes; + /* Compare then the fields */ + + for (;;) { + if (UNIV_UNLIKELY(rec_f_len <= cur_bytes)) { + if (dtuple_f_len <= cur_bytes) { + + goto next_field; + } + + rec_byte = dtype_get_pad_char(mtype, prtype); + + if (rec_byte == ULINT_UNDEFINED) { + ret = 1; + + goto order_resolved; + } + } else { + rec_byte = *rec_b_ptr; + } + + if (UNIV_UNLIKELY(dtuple_f_len <= cur_bytes)) { + dtuple_byte = dtype_get_pad_char(mtype, + prtype); + + if (dtuple_byte == ULINT_UNDEFINED) { + ret = -1; + + goto order_resolved; + } + } else { + dtuple_byte = *dtuple_b_ptr; + } + + if (dtuple_byte == rec_byte) { + /* If the bytes are equal, they will + remain such even after the collation + transformation below */ + + goto next_byte; + } + + if (mtype <= DATA_CHAR + || (mtype == DATA_BLOB + && !(prtype & DATA_BINARY_TYPE))) { + + rec_byte = cmp_collate(rec_byte); + dtuple_byte = cmp_collate(dtuple_byte); + } + + ret = (int) (dtuple_byte - rec_byte); + if (UNIV_LIKELY(ret)) { + if (ret < 0) { + ret = -1; + goto order_resolved; + } else { + ret = 1; + goto order_resolved; + } + } +next_byte: + /* Next byte */ + cur_bytes++; + rec_b_ptr++; + dtuple_b_ptr++; + } + +next_field: + cur_field++; + cur_bytes = 0; + } + + ut_ad(cur_bytes == 0); + + ret = 0; /* If we ran out of fields, dtuple was equal to rec + up to the common fields */ +order_resolved: + ut_ad((ret >= - 1) && (ret <= 1)); + ut_ad(ret == cmp_debug_dtuple_rec_with_match(dtuple, rec, offsets, + matched_fields)); + ut_ad(*matched_fields == cur_field); /* In the debug version, the + above cmp_debug_... sets + *matched_fields to a value */ + *matched_fields = cur_field; + *matched_bytes = cur_bytes; + + return(ret); +#else /* !UNIV_HOTBACKUP */ + /* This function depends on MySQL code that is not included in + InnoDB Hot Backup builds. Besides, this function should never + be called in InnoDB Hot Backup. */ + ut_error; + return(0); +#endif /* !UNIV_HOTBACKUP */ +} + +/****************************************************************** +Compares a data tuple to a physical record. */ +UNIV_INTERN +int +cmp_dtuple_rec( +/*===========*/ + /* out: 1, 0, -1, if dtuple is greater, equal, + less than rec, respectively; see the comments + for cmp_dtuple_rec_with_match */ + const dtuple_t* dtuple, /* in: data tuple */ + const rec_t* rec, /* in: physical record */ + const ulint* offsets)/* in: array returned by rec_get_offsets() */ +{ + ulint matched_fields = 0; + ulint matched_bytes = 0; + + ut_ad(rec_offs_validate(rec, NULL, offsets)); + return(cmp_dtuple_rec_with_match(dtuple, rec, offsets, + &matched_fields, &matched_bytes)); +} + +/****************************************************************** +Checks if a dtuple is a prefix of a record. The last field in dtuple +is allowed to be a prefix of the corresponding field in the record. */ +UNIV_INTERN +ibool +cmp_dtuple_is_prefix_of_rec( +/*========================*/ + /* out: TRUE if prefix */ + const dtuple_t* dtuple, /* in: data tuple */ + const rec_t* rec, /* in: physical record */ + const ulint* offsets)/* in: array returned by rec_get_offsets() */ +{ + ulint n_fields; + ulint matched_fields = 0; + ulint matched_bytes = 0; + + ut_ad(rec_offs_validate(rec, NULL, offsets)); + n_fields = dtuple_get_n_fields(dtuple); + + if (n_fields > rec_offs_n_fields(offsets)) { + + return(FALSE); + } + + cmp_dtuple_rec_with_match(dtuple, rec, offsets, + &matched_fields, &matched_bytes); + if (matched_fields == n_fields) { + + return(TRUE); + } + + if (matched_fields == n_fields - 1 + && matched_bytes == dfield_get_len( + dtuple_get_nth_field(dtuple, n_fields - 1))) { + return(TRUE); + } + + return(FALSE); +} + +#ifndef UNIV_HOTBACKUP +/***************************************************************** +Compare two physical records that contain the same number of columns, +none of which are stored externally. */ +UNIV_INTERN +int +cmp_rec_rec_simple( +/*===============*/ + /* out: 1, 0 , -1 if rec1 is greater, + equal, less, respectively, than rec2 */ + const rec_t* rec1, /* in: physical record */ + const rec_t* rec2, /* in: physical record */ + const ulint* offsets1,/* in: rec_get_offsets(rec1, index) */ + const ulint* offsets2,/* in: rec_get_offsets(rec2, index) */ + const dict_index_t* index) /* in: data dictionary index */ +{ + ulint rec1_f_len; /* length of current field in rec1 */ + const byte* rec1_b_ptr; /* pointer to the current byte + in rec1 field */ + ulint rec1_byte; /* value of current byte to be + compared in rec1 */ + ulint rec2_f_len; /* length of current field in rec2 */ + const byte* rec2_b_ptr; /* pointer to the current byte + in rec2 field */ + ulint rec2_byte; /* value of current byte to be + compared in rec2 */ + ulint cur_field; /* current field number */ + ulint n_uniq; + + n_uniq = dict_index_get_n_unique(index); + ut_ad(rec_offs_n_fields(offsets1) >= n_uniq); + ut_ad(rec_offs_n_fields(offsets2) >= n_uniq); + + ut_ad(rec_offs_comp(offsets1) == rec_offs_comp(offsets2)); + + for (cur_field = 0; cur_field < n_uniq; cur_field++) { + + ulint cur_bytes; + ulint mtype; + ulint prtype; + + { + const dict_col_t* col + = dict_index_get_nth_col(index, cur_field); + + mtype = col->mtype; + prtype = col->prtype; + } + + ut_ad(!rec_offs_nth_extern(offsets1, cur_field)); + ut_ad(!rec_offs_nth_extern(offsets2, cur_field)); + + rec1_b_ptr = rec_get_nth_field(rec1, offsets1, + cur_field, &rec1_f_len); + rec2_b_ptr = rec_get_nth_field(rec2, offsets2, + cur_field, &rec2_f_len); + + if (rec1_f_len == UNIV_SQL_NULL + || rec2_f_len == UNIV_SQL_NULL) { + + if (rec1_f_len == rec2_f_len) { + + goto next_field; + + } else if (rec2_f_len == UNIV_SQL_NULL) { + + /* We define the SQL null to be the + smallest possible value of a field + in the alphabetical order */ + + return(1); + } else { + return(-1); + } + } + + if (mtype >= DATA_FLOAT + || (mtype == DATA_BLOB + && 0 == (prtype & DATA_BINARY_TYPE) + && dtype_get_charset_coll(prtype) + != DATA_MYSQL_LATIN1_SWEDISH_CHARSET_COLL)) { + int ret = cmp_whole_field(mtype, prtype, + rec1_b_ptr, + (unsigned) rec1_f_len, + rec2_b_ptr, + (unsigned) rec2_f_len); + if (ret) { + return(ret); + } + + goto next_field; + } + + /* Compare the fields */ + for (cur_bytes = 0;; cur_bytes++, rec1_b_ptr++, rec2_b_ptr++) { + if (rec2_f_len <= cur_bytes) { + + if (rec1_f_len <= cur_bytes) { + + goto next_field; + } + + rec2_byte = dtype_get_pad_char(mtype, prtype); + + if (rec2_byte == ULINT_UNDEFINED) { + return(1); + } + } else { + rec2_byte = *rec2_b_ptr; + } + + if (rec1_f_len <= cur_bytes) { + rec1_byte = dtype_get_pad_char(mtype, prtype); + + if (rec1_byte == ULINT_UNDEFINED) { + return(-1); + } + } else { + rec1_byte = *rec1_b_ptr; + } + + if (rec1_byte == rec2_byte) { + /* If the bytes are equal, they will remain + such even after the collation transformation + below */ + + continue; + } + + if (mtype <= DATA_CHAR + || (mtype == DATA_BLOB + && !(prtype & DATA_BINARY_TYPE))) { + + rec1_byte = cmp_collate(rec1_byte); + rec2_byte = cmp_collate(rec2_byte); + } + + if (rec1_byte < rec2_byte) { + return(-1); + } else if (rec1_byte > rec2_byte) { + return(1); + } + } +next_field: + continue; + } + + /* If we ran out of fields, rec1 was equal to rec2. */ + return(0); +} +#endif /* !UNIV_HOTBACKUP */ + +/***************************************************************** +This function is used to compare two physical records. Only the common +first fields are compared, and if an externally stored field is +encountered, then 0 is returned. */ +UNIV_INTERN +int +cmp_rec_rec_with_match( +/*===================*/ + /* out: 1, 0 , -1 if rec1 is greater, equal, + less, respectively, than rec2; only the common + first fields are compared */ + const rec_t* rec1, /* in: physical record */ + const rec_t* rec2, /* in: physical record */ + const ulint* offsets1,/* in: rec_get_offsets(rec1, index) */ + const ulint* offsets2,/* in: rec_get_offsets(rec2, index) */ + dict_index_t* index, /* in: data dictionary index */ + ulint* matched_fields, /* in/out: number of already completely + matched fields; when the function returns, + contains the value the for current + comparison */ + ulint* matched_bytes) /* in/out: number of already matched + bytes within the first field not completely + matched; when the function returns, contains + the value for the current comparison */ +{ +#ifndef UNIV_HOTBACKUP + ulint rec1_n_fields; /* the number of fields in rec */ + ulint rec1_f_len; /* length of current field in rec */ + const byte* rec1_b_ptr; /* pointer to the current byte + in rec field */ + ulint rec1_byte; /* value of current byte to be + compared in rec */ + ulint rec2_n_fields; /* the number of fields in rec */ + ulint rec2_f_len; /* length of current field in rec */ + const byte* rec2_b_ptr; /* pointer to the current byte + in rec field */ + ulint rec2_byte; /* value of current byte to be + compared in rec */ + ulint cur_field; /* current field number */ + ulint cur_bytes; /* number of already matched + bytes in current field */ + int ret = 0; /* return value */ + ulint comp; + + ut_ad(rec1 && rec2 && index); + ut_ad(rec_offs_validate(rec1, index, offsets1)); + ut_ad(rec_offs_validate(rec2, index, offsets2)); + ut_ad(rec_offs_comp(offsets1) == rec_offs_comp(offsets2)); + + comp = rec_offs_comp(offsets1); + rec1_n_fields = rec_offs_n_fields(offsets1); + rec2_n_fields = rec_offs_n_fields(offsets2); + + cur_field = *matched_fields; + cur_bytes = *matched_bytes; + + /* Match fields in a loop */ + + while ((cur_field < rec1_n_fields) && (cur_field < rec2_n_fields)) { + + ulint mtype; + ulint prtype; + + if (UNIV_UNLIKELY(index->type & DICT_UNIVERSAL)) { + /* This is for the insert buffer B-tree. */ + mtype = DATA_BINARY; + prtype = 0; + } else { + const dict_col_t* col + = dict_index_get_nth_col(index, cur_field); + + mtype = col->mtype; + prtype = col->prtype; + } + + rec1_b_ptr = rec_get_nth_field(rec1, offsets1, + cur_field, &rec1_f_len); + rec2_b_ptr = rec_get_nth_field(rec2, offsets2, + cur_field, &rec2_f_len); + + if (cur_bytes == 0) { + if (cur_field == 0) { + /* Test if rec is the predefined minimum + record */ + if (UNIV_UNLIKELY(rec_get_info_bits(rec1, comp) + & REC_INFO_MIN_REC_FLAG)) { + + if (!(rec_get_info_bits(rec2, comp) + & REC_INFO_MIN_REC_FLAG)) { + ret = -1; + } + + goto order_resolved; + + } else if (UNIV_UNLIKELY + (rec_get_info_bits(rec2, comp) + & REC_INFO_MIN_REC_FLAG)) { + + ret = 1; + + goto order_resolved; + } + } + + if (rec_offs_nth_extern(offsets1, cur_field) + || rec_offs_nth_extern(offsets2, cur_field)) { + /* We do not compare to an externally + stored field */ + + goto order_resolved; + } + + if (rec1_f_len == UNIV_SQL_NULL + || rec2_f_len == UNIV_SQL_NULL) { + + if (rec1_f_len == rec2_f_len) { + + goto next_field; + + } else if (rec2_f_len == UNIV_SQL_NULL) { + + /* We define the SQL null to be the + smallest possible value of a field + in the alphabetical order */ + + ret = 1; + } else { + ret = -1; + } + + goto order_resolved; + } + } + + if (mtype >= DATA_FLOAT + || (mtype == DATA_BLOB + && 0 == (prtype & DATA_BINARY_TYPE) + && dtype_get_charset_coll(prtype) + != DATA_MYSQL_LATIN1_SWEDISH_CHARSET_COLL)) { + + ret = cmp_whole_field(mtype, prtype, + rec1_b_ptr, + (unsigned) rec1_f_len, + rec2_b_ptr, + (unsigned) rec2_f_len); + if (ret != 0) { + cur_bytes = 0; + + goto order_resolved; + } else { + goto next_field; + } + } + + /* Set the pointers at the current byte */ + rec1_b_ptr = rec1_b_ptr + cur_bytes; + rec2_b_ptr = rec2_b_ptr + cur_bytes; + + /* Compare then the fields */ + for (;;) { + if (rec2_f_len <= cur_bytes) { + + if (rec1_f_len <= cur_bytes) { + + goto next_field; + } + + rec2_byte = dtype_get_pad_char(mtype, prtype); + + if (rec2_byte == ULINT_UNDEFINED) { + ret = 1; + + goto order_resolved; + } + } else { + rec2_byte = *rec2_b_ptr; + } + + if (rec1_f_len <= cur_bytes) { + rec1_byte = dtype_get_pad_char(mtype, prtype); + + if (rec1_byte == ULINT_UNDEFINED) { + ret = -1; + + goto order_resolved; + } + } else { + rec1_byte = *rec1_b_ptr; + } + + if (rec1_byte == rec2_byte) { + /* If the bytes are equal, they will remain + such even after the collation transformation + below */ + + goto next_byte; + } + + if (mtype <= DATA_CHAR + || (mtype == DATA_BLOB + && !(prtype & DATA_BINARY_TYPE))) { + + rec1_byte = cmp_collate(rec1_byte); + rec2_byte = cmp_collate(rec2_byte); + } + + if (rec1_byte < rec2_byte) { + ret = -1; + goto order_resolved; + } else if (rec1_byte > rec2_byte) { + ret = 1; + goto order_resolved; + } +next_byte: + /* Next byte */ + + cur_bytes++; + rec1_b_ptr++; + rec2_b_ptr++; + } + +next_field: + cur_field++; + cur_bytes = 0; + } + + ut_ad(cur_bytes == 0); + + /* If we ran out of fields, rec1 was equal to rec2 up + to the common fields */ + ut_ad(ret == 0); +order_resolved: + + ut_ad((ret >= - 1) && (ret <= 1)); + + *matched_fields = cur_field; + *matched_bytes = cur_bytes; + + return(ret); +#else /* !UNIV_HOTBACKUP */ + /* This function depends on MySQL code that is not included in + InnoDB Hot Backup builds. Besides, this function should never + be called in InnoDB Hot Backup. */ + ut_error; + return(0); +#endif /* !UNIV_HOTBACKUP */ +} + +#ifdef UNIV_DEBUG +/***************************************************************** +Used in debug checking of cmp_dtuple_... . +This function is used to compare a data tuple to a physical record. If +dtuple has n fields then rec must have either m >= n fields, or it must +differ from dtuple in some of the m fields rec has. If encounters an +externally stored field, returns 0. */ +static +int +cmp_debug_dtuple_rec_with_match( +/*============================*/ + /* out: 1, 0, -1, if dtuple is greater, equal, + less than rec, respectively, when only the + common first fields are compared */ + const dtuple_t* dtuple, /* in: data tuple */ + const rec_t* rec, /* in: physical record which differs from + dtuple in some of the common fields, or which + has an equal number or more fields than + dtuple */ + const ulint* offsets,/* in: array returned by rec_get_offsets() */ + ulint* matched_fields) /* in/out: number of already + completely matched fields; when function + returns, contains the value for current + comparison */ +{ + const dfield_t* dtuple_field; /* current field in logical record */ + ulint dtuple_f_len; /* the length of the current field + in the logical record */ + const byte* dtuple_f_data; /* pointer to the current logical + field data */ + ulint rec_f_len; /* length of current field in rec */ + const byte* rec_f_data; /* pointer to the current rec field */ + int ret = 3333; /* return value */ + ulint cur_field; /* current field number */ + + ut_ad(dtuple && rec && matched_fields); + ut_ad(dtuple_check_typed(dtuple)); + ut_ad(rec_offs_validate(rec, NULL, offsets)); + + ut_ad(*matched_fields <= dtuple_get_n_fields_cmp(dtuple)); + ut_ad(*matched_fields <= rec_offs_n_fields(offsets)); + + cur_field = *matched_fields; + + if (cur_field == 0) { + if (UNIV_UNLIKELY + (rec_get_info_bits(rec, rec_offs_comp(offsets)) + & REC_INFO_MIN_REC_FLAG)) { + + ret = !(dtuple_get_info_bits(dtuple) + & REC_INFO_MIN_REC_FLAG); + + goto order_resolved; + } + + if (UNIV_UNLIKELY + (dtuple_get_info_bits(dtuple) & REC_INFO_MIN_REC_FLAG)) { + ret = -1; + + goto order_resolved; + } + } + + /* Match fields in a loop; stop if we run out of fields in dtuple */ + + while (cur_field < dtuple_get_n_fields_cmp(dtuple)) { + + ulint mtype; + ulint prtype; + + dtuple_field = dtuple_get_nth_field(dtuple, cur_field); + { + const dtype_t* type + = dfield_get_type(dtuple_field); + + mtype = type->mtype; + prtype = type->prtype; + } + + dtuple_f_data = dfield_get_data(dtuple_field); + dtuple_f_len = dfield_get_len(dtuple_field); + + rec_f_data = rec_get_nth_field(rec, offsets, + cur_field, &rec_f_len); + + if (rec_offs_nth_extern(offsets, cur_field)) { + /* We do not compare to an externally stored field */ + + ret = 0; + + goto order_resolved; + } + + ret = cmp_data_data(mtype, prtype, dtuple_f_data, dtuple_f_len, + rec_f_data, rec_f_len); + if (ret != 0) { + goto order_resolved; + } + + cur_field++; + } + + ret = 0; /* If we ran out of fields, dtuple was equal to rec + up to the common fields */ +order_resolved: + ut_ad((ret >= - 1) && (ret <= 1)); + + *matched_fields = cur_field; + + return(ret); +} +#endif /* UNIV_DEBUG */ === added file 'storage/xtradb/rem/rem0rec.c' --- a/storage/xtradb/rem/rem0rec.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/rem/rem0rec.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,1720 @@ +/***************************************************************************** + +Copyright (c) 1994, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/************************************************************************ +Record manager + +Created 5/30/1994 Heikki Tuuri +*************************************************************************/ + +#include "rem0rec.h" + +#ifdef UNIV_NONINL +#include "rem0rec.ic" +#endif + +#include "mtr0mtr.h" +#include "mtr0log.h" + +/* PHYSICAL RECORD (OLD STYLE) + =========================== + +The physical record, which is the data type of all the records +found in index pages of the database, has the following format +(lower addresses and more significant bits inside a byte are below +represented on a higher text line): + +| offset of the end of the last field of data, the most significant + bit is set to 1 if and only if the field is SQL-null, + if the offset is 2-byte, then the second most significant + bit is set to 1 if the field is stored on another page: + mostly this will occur in the case of big BLOB fields | +... +| offset of the end of the first field of data + the SQL-null bit | +| 4 bits used to delete mark a record, and mark a predefined + minimum record in alphabetical order | +| 4 bits giving the number of records owned by this record + (this term is explained in page0page.h) | +| 13 bits giving the order number of this record in the + heap of the index page | +| 10 bits giving the number of fields in this record | +| 1 bit which is set to 1 if the offsets above are given in + one byte format, 0 if in two byte format | +| two bytes giving an absolute pointer to the next record in the page | +ORIGIN of the record +| first field of data | +... +| last field of data | + +The origin of the record is the start address of the first field +of data. The offsets are given relative to the origin. +The offsets of the data fields are stored in an inverted +order because then the offset of the first fields are near the +origin, giving maybe a better processor cache hit rate in searches. + +The offsets of the data fields are given as one-byte +(if there are less than 127 bytes of data in the record) +or two-byte unsigned integers. The most significant bit +is not part of the offset, instead it indicates the SQL-null +if the bit is set to 1. */ + +/* PHYSICAL RECORD (NEW STYLE) + =========================== + +The physical record, which is the data type of all the records +found in index pages of the database, has the following format +(lower addresses and more significant bits inside a byte are below +represented on a higher text line): + +| length of the last non-null variable-length field of data: + if the maximum length is 255, one byte; otherwise, + 0xxxxxxx (one byte, length=0..127), or 1exxxxxxxxxxxxxx (two bytes, + length=128..16383, extern storage flag) | +... +| length of first variable-length field of data | +| SQL-null flags (1 bit per nullable field), padded to full bytes | +| 4 bits used to delete mark a record, and mark a predefined + minimum record in alphabetical order | +| 4 bits giving the number of records owned by this record + (this term is explained in page0page.h) | +| 13 bits giving the order number of this record in the + heap of the index page | +| 3 bits record type: 000=conventional, 001=node pointer (inside B-tree), + 010=infimum, 011=supremum, 1xx=reserved | +| two bytes giving a relative pointer to the next record in the page | +ORIGIN of the record +| first field of data | +... +| last field of data | + +The origin of the record is the start address of the first field +of data. The offsets are given relative to the origin. +The offsets of the data fields are stored in an inverted +order because then the offset of the first fields are near the +origin, giving maybe a better processor cache hit rate in searches. + +The offsets of the data fields are given as one-byte +(if there are less than 127 bytes of data in the record) +or two-byte unsigned integers. The most significant bit +is not part of the offset, instead it indicates the SQL-null +if the bit is set to 1. */ + +/* CANONICAL COORDINATES. A record can be seen as a single +string of 'characters' in the following way: catenate the bytes +in each field, in the order of fields. An SQL-null field +is taken to be an empty sequence of bytes. Then after +the position of each field insert in the string +the 'character' <FIELD-END>, except that after an SQL-null field +insert <NULL-FIELD-END>. Now the ordinal position of each +byte in this canonical string is its canonical coordinate. +So, for the record ("AA", SQL-NULL, "BB", ""), the canonical +string is "AA<FIELD_END><NULL-FIELD-END>BB<FIELD-END><FIELD-END>". +We identify prefixes (= initial segments) of a record +with prefixes of the canonical string. The canonical +length of the prefix is the length of the corresponding +prefix of the canonical string. The canonical length of +a record is the length of its canonical string. + +For example, the maximal common prefix of records +("AA", SQL-NULL, "BB", "C") and ("AA", SQL-NULL, "B", "C") +is "AA<FIELD-END><NULL-FIELD-END>B", and its canonical +length is 5. + +A complete-field prefix of a record is a prefix which ends at the +end of some field (containing also <FIELD-END>). +A record is a complete-field prefix of another record, if +the corresponding canonical strings have the same property. */ + +/* this is used to fool compiler in rec_validate */ +UNIV_INTERN ulint rec_dummy; + +/******************************************************************* +Validates the consistency of an old-style physical record. */ +static +ibool +rec_validate_old( +/*=============*/ + /* out: TRUE if ok */ + const rec_t* rec); /* in: physical record */ + +/********************************************************** +Determine how many of the first n columns in a compact +physical record are stored externally. */ +UNIV_INTERN +ulint +rec_get_n_extern_new( +/*=================*/ + /* out: number of externally stored columns */ + const rec_t* rec, /* in: compact physical record */ + dict_index_t* index, /* in: record descriptor */ + ulint n) /* in: number of columns to scan */ +{ + const byte* nulls; + const byte* lens; + dict_field_t* field; + ulint null_mask; + ulint n_extern; + ulint i; + + ut_ad(dict_table_is_comp(index->table)); + ut_ad(rec_get_status(rec) == REC_STATUS_ORDINARY); + ut_ad(n == ULINT_UNDEFINED || n <= dict_index_get_n_fields(index)); + + if (n == ULINT_UNDEFINED) { + n = dict_index_get_n_fields(index); + } + + nulls = rec - (REC_N_NEW_EXTRA_BYTES + 1); + lens = nulls - UT_BITS_IN_BYTES(index->n_nullable); + null_mask = 1; + n_extern = 0; + i = 0; + + /* read the lengths of fields 0..n */ + do { + ulint len; + + field = dict_index_get_nth_field(index, i); + if (!(dict_field_get_col(field)->prtype & DATA_NOT_NULL)) { + /* nullable field => read the null flag */ + + if (UNIV_UNLIKELY(!(byte) null_mask)) { + nulls--; + null_mask = 1; + } + + if (*nulls & null_mask) { + null_mask <<= 1; + /* No length is stored for NULL fields. */ + continue; + } + null_mask <<= 1; + } + + if (UNIV_UNLIKELY(!field->fixed_len)) { + /* Variable-length field: read the length */ + const dict_col_t* col + = dict_field_get_col(field); + len = *lens--; + if (UNIV_UNLIKELY(col->len > 255) + || UNIV_UNLIKELY(col->mtype == DATA_BLOB)) { + if (len & 0x80) { + /* 1exxxxxxx xxxxxxxx */ + if (len & 0x40) { + n_extern++; + } + lens--; + } + } + } + } while (++i < n); + + return(n_extern); +} + +/********************************************************** +Determine the offset to each field in a leaf-page record +in ROW_FORMAT=COMPACT. This is a special case of +rec_init_offsets() and rec_get_offsets_func(). */ +UNIV_INTERN +void +rec_init_offsets_comp_ordinary( +/*===========================*/ + const rec_t* rec, /* in: physical record in + ROW_FORMAT=COMPACT */ + ulint extra, /* in: number of bytes to reserve + between the record header and + the data payload + (usually REC_N_NEW_EXTRA_BYTES) */ + const dict_index_t* index, /* in: record descriptor */ + ulint* offsets)/* in/out: array of offsets; + in: n=rec_offs_n_fields(offsets) */ +{ + ulint i = 0; + ulint offs = 0; + ulint any_ext = 0; + const byte* nulls = rec - (extra + 1); + const byte* lens = nulls + - UT_BITS_IN_BYTES(index->n_nullable); + dict_field_t* field; + ulint null_mask = 1; + +#ifdef UNIV_DEBUG + /* We cannot invoke rec_offs_make_valid() here, because it can hold + that extra != REC_N_NEW_EXTRA_BYTES. Similarly, rec_offs_validate() + will fail in that case, because it invokes rec_get_status(). */ + offsets[2] = (ulint) rec; + offsets[3] = (ulint) index; +#endif /* UNIV_DEBUG */ + + /* read the lengths of fields 0..n */ + do { + ulint len; + + field = dict_index_get_nth_field(index, i); + if (!(dict_field_get_col(field)->prtype + & DATA_NOT_NULL)) { + /* nullable field => read the null flag */ + + if (UNIV_UNLIKELY(!(byte) null_mask)) { + nulls--; + null_mask = 1; + } + + if (*nulls & null_mask) { + null_mask <<= 1; + /* No length is stored for NULL fields. + We do not advance offs, and we set + the length to zero and enable the + SQL NULL flag in offsets[]. */ + len = offs | REC_OFFS_SQL_NULL; + goto resolved; + } + null_mask <<= 1; + } + + if (UNIV_UNLIKELY(!field->fixed_len)) { + /* Variable-length field: read the length */ + const dict_col_t* col + = dict_field_get_col(field); + len = *lens--; + if (UNIV_UNLIKELY(col->len > 255) + || UNIV_UNLIKELY(col->mtype + == DATA_BLOB)) { + if (len & 0x80) { + /* 1exxxxxxx xxxxxxxx */ + len <<= 8; + len |= *lens--; + + offs += len & 0x3fff; + if (UNIV_UNLIKELY(len + & 0x4000)) { + ut_ad(dict_index_is_clust + (index)); + any_ext = REC_OFFS_EXTERNAL; + len = offs + | REC_OFFS_EXTERNAL; + } else { + len = offs; + } + + goto resolved; + } + } + + len = offs += len; + } else { + len = offs += field->fixed_len; + } +resolved: + rec_offs_base(offsets)[i + 1] = len; + } while (++i < rec_offs_n_fields(offsets)); + + *rec_offs_base(offsets) + = (rec - (lens + 1)) | REC_OFFS_COMPACT | any_ext; +} + +/********************************************************** +The following function determines the offsets to each field in the +record. The offsets are written to a previously allocated array of +ulint, where rec_offs_n_fields(offsets) has been initialized to the +number of fields in the record. The rest of the array will be +initialized by this function. rec_offs_base(offsets)[0] will be set +to the extra size (if REC_OFFS_COMPACT is set, the record is in the +new format; if REC_OFFS_EXTERNAL is set, the record contains externally +stored columns), and rec_offs_base(offsets)[1..n_fields] will be set to +offsets past the end of fields 0..n_fields, or to the beginning of +fields 1..n_fields+1. When the high-order bit of the offset at [i+1] +is set (REC_OFFS_SQL_NULL), the field i is NULL. When the second +high-order bit of the offset at [i+1] is set (REC_OFFS_EXTERNAL), the +field i is being stored externally. */ +static +void +rec_init_offsets( +/*=============*/ + const rec_t* rec, /* in: physical record */ + const dict_index_t* index, /* in: record descriptor */ + ulint* offsets)/* in/out: array of offsets; + in: n=rec_offs_n_fields(offsets) */ +{ + ulint i = 0; + ulint offs; + + rec_offs_make_valid(rec, index, offsets); + + if (dict_table_is_comp(index->table)) { + const byte* nulls; + const byte* lens; + dict_field_t* field; + ulint null_mask; + ulint status = rec_get_status(rec); + ulint n_node_ptr_field = ULINT_UNDEFINED; + + switch (UNIV_EXPECT(status, REC_STATUS_ORDINARY)) { + case REC_STATUS_INFIMUM: + case REC_STATUS_SUPREMUM: + /* the field is 8 bytes long */ + rec_offs_base(offsets)[0] + = REC_N_NEW_EXTRA_BYTES | REC_OFFS_COMPACT; + rec_offs_base(offsets)[1] = 8; + return; + case REC_STATUS_NODE_PTR: + n_node_ptr_field + = dict_index_get_n_unique_in_tree(index); + break; + case REC_STATUS_ORDINARY: + rec_init_offsets_comp_ordinary(rec, + REC_N_NEW_EXTRA_BYTES, + index, offsets); + return; + } + + nulls = rec - (REC_N_NEW_EXTRA_BYTES + 1); + lens = nulls - UT_BITS_IN_BYTES(index->n_nullable); + offs = 0; + null_mask = 1; + + /* read the lengths of fields 0..n */ + do { + ulint len; + if (UNIV_UNLIKELY(i == n_node_ptr_field)) { + len = offs += 4; + goto resolved; + } + + field = dict_index_get_nth_field(index, i); + if (!(dict_field_get_col(field)->prtype + & DATA_NOT_NULL)) { + /* nullable field => read the null flag */ + + if (UNIV_UNLIKELY(!(byte) null_mask)) { + nulls--; + null_mask = 1; + } + + if (*nulls & null_mask) { + null_mask <<= 1; + /* No length is stored for NULL fields. + We do not advance offs, and we set + the length to zero and enable the + SQL NULL flag in offsets[]. */ + len = offs | REC_OFFS_SQL_NULL; + goto resolved; + } + null_mask <<= 1; + } + + if (UNIV_UNLIKELY(!field->fixed_len)) { + /* Variable-length field: read the length */ + const dict_col_t* col + = dict_field_get_col(field); + len = *lens--; + if (UNIV_UNLIKELY(col->len > 255) + || UNIV_UNLIKELY(col->mtype + == DATA_BLOB)) { + if (len & 0x80) { + /* 1exxxxxxx xxxxxxxx */ + + len <<= 8; + len |= *lens--; + + /* B-tree node pointers + must not contain externally + stored columns. Thus + the "e" flag must be 0. */ + ut_a(!(len & 0x4000)); + offs += len & 0x3fff; + len = offs; + + goto resolved; + } + } + + len = offs += len; + } else { + len = offs += field->fixed_len; + } +resolved: + rec_offs_base(offsets)[i + 1] = len; + } while (++i < rec_offs_n_fields(offsets)); + + *rec_offs_base(offsets) + = (rec - (lens + 1)) | REC_OFFS_COMPACT; + } else { + /* Old-style record: determine extra size and end offsets */ + offs = REC_N_OLD_EXTRA_BYTES; + if (rec_get_1byte_offs_flag(rec)) { + offs += rec_offs_n_fields(offsets); + *rec_offs_base(offsets) = offs; + /* Determine offsets to fields */ + do { + offs = rec_1_get_field_end_info(rec, i); + if (offs & REC_1BYTE_SQL_NULL_MASK) { + offs &= ~REC_1BYTE_SQL_NULL_MASK; + offs |= REC_OFFS_SQL_NULL; + } + rec_offs_base(offsets)[1 + i] = offs; + } while (++i < rec_offs_n_fields(offsets)); + } else { + offs += 2 * rec_offs_n_fields(offsets); + *rec_offs_base(offsets) = offs; + /* Determine offsets to fields */ + do { + offs = rec_2_get_field_end_info(rec, i); + if (offs & REC_2BYTE_SQL_NULL_MASK) { + offs &= ~REC_2BYTE_SQL_NULL_MASK; + offs |= REC_OFFS_SQL_NULL; + } + if (offs & REC_2BYTE_EXTERN_MASK) { + offs &= ~REC_2BYTE_EXTERN_MASK; + offs |= REC_OFFS_EXTERNAL; + *rec_offs_base(offsets) |= REC_OFFS_EXTERNAL; + } + rec_offs_base(offsets)[1 + i] = offs; + } while (++i < rec_offs_n_fields(offsets)); + } + } +} + +/********************************************************** +The following function determines the offsets to each field +in the record. It can reuse a previously returned array. */ +UNIV_INTERN +ulint* +rec_get_offsets_func( +/*=================*/ + /* out: the new offsets */ + const rec_t* rec, /* in: physical record */ + const dict_index_t* index, /* in: record descriptor */ + ulint* offsets,/* in/out: array consisting of + offsets[0] allocated elements, + or an array from rec_get_offsets(), + or NULL */ + ulint n_fields,/* in: maximum number of + initialized fields + (ULINT_UNDEFINED if all fields) */ + mem_heap_t** heap, /* in/out: memory heap */ + const char* file, /* in: file name where called */ + ulint line) /* in: line number where called */ +{ + ulint n; + ulint size; + + ut_ad(rec); + ut_ad(index); + ut_ad(heap); + + if (dict_table_is_comp(index->table)) { + switch (UNIV_EXPECT(rec_get_status(rec), + REC_STATUS_ORDINARY)) { + case REC_STATUS_ORDINARY: + n = dict_index_get_n_fields(index); + break; + case REC_STATUS_NODE_PTR: + n = dict_index_get_n_unique_in_tree(index) + 1; + break; + case REC_STATUS_INFIMUM: + case REC_STATUS_SUPREMUM: + /* infimum or supremum record */ + n = 1; + break; + default: + ut_error; + return(NULL); + } + } else { + n = rec_get_n_fields_old(rec); + } + + if (UNIV_UNLIKELY(n_fields < n)) { + n = n_fields; + } + + size = n + (1 + REC_OFFS_HEADER_SIZE); + + if (UNIV_UNLIKELY(!offsets) + || UNIV_UNLIKELY(rec_offs_get_n_alloc(offsets) < size)) { + if (UNIV_UNLIKELY(!*heap)) { + *heap = mem_heap_create_func(size * sizeof(ulint), + MEM_HEAP_DYNAMIC, + file, line); + } + offsets = mem_heap_alloc(*heap, size * sizeof(ulint)); + rec_offs_set_n_alloc(offsets, size); + } + + rec_offs_set_n_fields(offsets, n); + rec_init_offsets(rec, index, offsets); + return(offsets); +} + +/********************************************************** +The following function determines the offsets to each field +in the record. It can reuse a previously allocated array. */ +UNIV_INTERN +void +rec_get_offsets_reverse( +/*====================*/ + const byte* extra, /* in: the extra bytes of a + compact record in reverse order, + excluding the fixed-size + REC_N_NEW_EXTRA_BYTES */ + const dict_index_t* index, /* in: record descriptor */ + ulint node_ptr,/* in: nonzero=node pointer, + 0=leaf node */ + ulint* offsets)/* in/out: array consisting of + offsets[0] allocated elements */ +{ + ulint n; + ulint i; + ulint offs; + ulint any_ext; + const byte* nulls; + const byte* lens; + dict_field_t* field; + ulint null_mask; + ulint n_node_ptr_field; + + ut_ad(extra); + ut_ad(index); + ut_ad(offsets); + ut_ad(dict_table_is_comp(index->table)); + + if (UNIV_UNLIKELY(node_ptr)) { + n_node_ptr_field = dict_index_get_n_unique_in_tree(index); + n = n_node_ptr_field + 1; + } else { + n_node_ptr_field = ULINT_UNDEFINED; + n = dict_index_get_n_fields(index); + } + + ut_a(rec_offs_get_n_alloc(offsets) >= n + (1 + REC_OFFS_HEADER_SIZE)); + rec_offs_set_n_fields(offsets, n); + + nulls = extra; + lens = nulls + UT_BITS_IN_BYTES(index->n_nullable); + i = offs = 0; + null_mask = 1; + any_ext = 0; + + /* read the lengths of fields 0..n */ + do { + ulint len; + if (UNIV_UNLIKELY(i == n_node_ptr_field)) { + len = offs += 4; + goto resolved; + } + + field = dict_index_get_nth_field(index, i); + if (!(dict_field_get_col(field)->prtype & DATA_NOT_NULL)) { + /* nullable field => read the null flag */ + + if (UNIV_UNLIKELY(!(byte) null_mask)) { + nulls++; + null_mask = 1; + } + + if (*nulls & null_mask) { + null_mask <<= 1; + /* No length is stored for NULL fields. + We do not advance offs, and we set + the length to zero and enable the + SQL NULL flag in offsets[]. */ + len = offs | REC_OFFS_SQL_NULL; + goto resolved; + } + null_mask <<= 1; + } + + if (UNIV_UNLIKELY(!field->fixed_len)) { + /* Variable-length field: read the length */ + const dict_col_t* col + = dict_field_get_col(field); + len = *lens++; + if (UNIV_UNLIKELY(col->len > 255) + || UNIV_UNLIKELY(col->mtype == DATA_BLOB)) { + if (len & 0x80) { + /* 1exxxxxxx xxxxxxxx */ + len <<= 8; + len |= *lens++; + + offs += len & 0x3fff; + if (UNIV_UNLIKELY(len & 0x4000)) { + any_ext = REC_OFFS_EXTERNAL; + len = offs | REC_OFFS_EXTERNAL; + } else { + len = offs; + } + + goto resolved; + } + } + + len = offs += len; + } else { + len = offs += field->fixed_len; + } +resolved: + rec_offs_base(offsets)[i + 1] = len; + } while (++i < rec_offs_n_fields(offsets)); + + ut_ad(lens >= extra); + *rec_offs_base(offsets) = (lens - extra + REC_N_NEW_EXTRA_BYTES) + | REC_OFFS_COMPACT | any_ext; +} + +/**************************************************************** +The following function is used to get the offset to the nth +data field in an old-style record. */ +UNIV_INTERN +ulint +rec_get_nth_field_offs_old( +/*=======================*/ + /* out: offset to the field */ + const rec_t* rec, /* in: record */ + ulint n, /* in: index of the field */ + ulint* len) /* out: length of the field; + UNIV_SQL_NULL if SQL null */ +{ + ulint os; + ulint next_os; + + ut_ad(rec && len); + ut_ad(n < rec_get_n_fields_old(rec)); + + if (UNIV_UNLIKELY(n > REC_MAX_N_FIELDS)) { + fprintf(stderr, "Error: trying to access field %lu in rec\n", + (ulong) n); + ut_error; + } + + if (UNIV_UNLIKELY(rec == NULL)) { + fputs("Error: rec is NULL pointer\n", stderr); + ut_error; + } + + if (rec_get_1byte_offs_flag(rec)) { + os = rec_1_get_field_start_offs(rec, n); + + next_os = rec_1_get_field_end_info(rec, n); + + if (next_os & REC_1BYTE_SQL_NULL_MASK) { + *len = UNIV_SQL_NULL; + + return(os); + } + + next_os = next_os & ~REC_1BYTE_SQL_NULL_MASK; + } else { + os = rec_2_get_field_start_offs(rec, n); + + next_os = rec_2_get_field_end_info(rec, n); + + if (next_os & REC_2BYTE_SQL_NULL_MASK) { + *len = UNIV_SQL_NULL; + + return(os); + } + + next_os = next_os & ~(REC_2BYTE_SQL_NULL_MASK + | REC_2BYTE_EXTERN_MASK); + } + + *len = next_os - os; + + ut_ad(*len < UNIV_PAGE_SIZE); + + return(os); +} + +/************************************************************** +Determines the size of a data tuple prefix in ROW_FORMAT=COMPACT. */ +UNIV_INTERN +ulint +rec_get_converted_size_comp_prefix( +/*===============================*/ + /* out: total size */ + const dict_index_t* index, /* in: record descriptor; + dict_table_is_comp() is + assumed to hold, even if + it does not */ + const dfield_t* fields, /* in: array of data fields */ + ulint n_fields,/* in: number of data fields */ + ulint* extra) /* out: extra size */ +{ + ulint extra_size; + ulint data_size; + ulint i; + ut_ad(index); + ut_ad(fields); + ut_ad(n_fields > 0); + ut_ad(n_fields <= dict_index_get_n_fields(index)); + + extra_size = REC_N_NEW_EXTRA_BYTES + + UT_BITS_IN_BYTES(index->n_nullable); + data_size = 0; + + /* read the lengths of fields 0..n */ + for (i = 0; i < n_fields; i++) { + const dict_field_t* field; + ulint len; + const dict_col_t* col; + + field = dict_index_get_nth_field(index, i); + len = dfield_get_len(&fields[i]); + col = dict_field_get_col(field); + + ut_ad(dict_col_type_assert_equal(col, + dfield_get_type(&fields[i]))); + + if (dfield_is_null(&fields[i])) { + /* No length is stored for NULL fields. */ + ut_ad(!(col->prtype & DATA_NOT_NULL)); + continue; + } + + ut_ad(len <= col->len || col->mtype == DATA_BLOB); + + if (field->fixed_len) { + ut_ad(len == field->fixed_len); + /* dict_index_add_col() should guarantee this */ + ut_ad(!field->prefix_len + || field->fixed_len == field->prefix_len); + } else if (dfield_is_ext(&fields[i])) { + extra_size += 2; + } else if (len < 128 + || (col->len < 256 && col->mtype != DATA_BLOB)) { + extra_size++; + } else { + /* For variable-length columns, we look up the + maximum length from the column itself. If this + is a prefix index column shorter than 256 bytes, + this will waste one byte. */ + extra_size += 2; + } + data_size += len; + } + + if (UNIV_LIKELY_NULL(extra)) { + *extra = extra_size; + } + + return(extra_size + data_size); +} + +/************************************************************** +Determines the size of a data tuple in ROW_FORMAT=COMPACT. */ +UNIV_INTERN +ulint +rec_get_converted_size_comp( +/*========================*/ + /* out: total size */ + const dict_index_t* index, /* in: record descriptor; + dict_table_is_comp() is + assumed to hold, even if + it does not */ + ulint status, /* in: status bits of the record */ + const dfield_t* fields, /* in: array of data fields */ + ulint n_fields,/* in: number of data fields */ + ulint* extra) /* out: extra size */ +{ + ulint size; + ut_ad(index); + ut_ad(fields); + ut_ad(n_fields > 0); + + switch (UNIV_EXPECT(status, REC_STATUS_ORDINARY)) { + case REC_STATUS_ORDINARY: + ut_ad(n_fields == dict_index_get_n_fields(index)); + size = 0; + break; + case REC_STATUS_NODE_PTR: + n_fields--; + ut_ad(n_fields == dict_index_get_n_unique_in_tree(index)); + ut_ad(dfield_get_len(&fields[n_fields]) == REC_NODE_PTR_SIZE); + size = REC_NODE_PTR_SIZE; /* child page number */ + break; + case REC_STATUS_INFIMUM: + case REC_STATUS_SUPREMUM: + /* infimum or supremum record, 8 data bytes */ + if (UNIV_LIKELY_NULL(extra)) { + *extra = REC_N_NEW_EXTRA_BYTES; + } + return(REC_N_NEW_EXTRA_BYTES + 8); + default: + ut_error; + return(ULINT_UNDEFINED); + } + + return(size + rec_get_converted_size_comp_prefix(index, fields, + n_fields, extra)); +} + +/*************************************************************** +Sets the value of the ith field SQL null bit of an old-style record. */ +UNIV_INTERN +void +rec_set_nth_field_null_bit( +/*=======================*/ + rec_t* rec, /* in: record */ + ulint i, /* in: ith field */ + ibool val) /* in: value to set */ +{ + ulint info; + + if (rec_get_1byte_offs_flag(rec)) { + + info = rec_1_get_field_end_info(rec, i); + + if (val) { + info = info | REC_1BYTE_SQL_NULL_MASK; + } else { + info = info & ~REC_1BYTE_SQL_NULL_MASK; + } + + rec_1_set_field_end_info(rec, i, info); + + return; + } + + info = rec_2_get_field_end_info(rec, i); + + if (val) { + info = info | REC_2BYTE_SQL_NULL_MASK; + } else { + info = info & ~REC_2BYTE_SQL_NULL_MASK; + } + + rec_2_set_field_end_info(rec, i, info); +} + +/*************************************************************** +Sets an old-style record field to SQL null. +The physical size of the field is not changed. */ +UNIV_INTERN +void +rec_set_nth_field_sql_null( +/*=======================*/ + rec_t* rec, /* in: record */ + ulint n) /* in: index of the field */ +{ + ulint offset; + + offset = rec_get_field_start_offs(rec, n); + + data_write_sql_null(rec + offset, rec_get_nth_field_size(rec, n)); + + rec_set_nth_field_null_bit(rec, n, TRUE); +} + +/************************************************************* +Builds an old-style physical record out of a data tuple and +stores it beginning from the start of the given buffer. */ +static +rec_t* +rec_convert_dtuple_to_rec_old( +/*==========================*/ + /* out: pointer to the origin of + physical record */ + byte* buf, /* in: start address of the physical record */ + const dtuple_t* dtuple, /* in: data tuple */ + ulint n_ext) /* in: number of externally stored columns */ +{ + const dfield_t* field; + ulint n_fields; + ulint data_size; + rec_t* rec; + ulint end_offset; + ulint ored_offset; + ulint len; + ulint i; + + ut_ad(buf && dtuple); + ut_ad(dtuple_validate(dtuple)); + ut_ad(dtuple_check_typed(dtuple)); + + n_fields = dtuple_get_n_fields(dtuple); + data_size = dtuple_get_data_size(dtuple); + + ut_ad(n_fields > 0); + + /* Calculate the offset of the origin in the physical record */ + + rec = buf + rec_get_converted_extra_size(data_size, n_fields, n_ext); +#ifdef UNIV_DEBUG + /* Suppress Valgrind warnings of ut_ad() + in mach_write_to_1(), mach_write_to_2() et al. */ + memset(buf, 0xff, rec - buf + data_size); +#endif /* UNIV_DEBUG */ + /* Store the number of fields */ + rec_set_n_fields_old(rec, n_fields); + + /* Set the info bits of the record */ + rec_set_info_bits_old(rec, dtuple_get_info_bits(dtuple) + & REC_INFO_BITS_MASK); + + /* Store the data and the offsets */ + + end_offset = 0; + + if (!n_ext && data_size <= REC_1BYTE_OFFS_LIMIT) { + + rec_set_1byte_offs_flag(rec, TRUE); + + for (i = 0; i < n_fields; i++) { + + field = dtuple_get_nth_field(dtuple, i); + + if (dfield_is_null(field)) { + len = dtype_get_sql_null_size( + dfield_get_type(field)); + data_write_sql_null(rec + end_offset, len); + + end_offset += len; + ored_offset = end_offset + | REC_1BYTE_SQL_NULL_MASK; + } else { + /* If the data is not SQL null, store it */ + len = dfield_get_len(field); + + memcpy(rec + end_offset, + dfield_get_data(field), len); + + end_offset += len; + ored_offset = end_offset; + } + + rec_1_set_field_end_info(rec, i, ored_offset); + } + } else { + rec_set_1byte_offs_flag(rec, FALSE); + + for (i = 0; i < n_fields; i++) { + + field = dtuple_get_nth_field(dtuple, i); + + if (dfield_is_null(field)) { + len = dtype_get_sql_null_size( + dfield_get_type(field)); + data_write_sql_null(rec + end_offset, len); + + end_offset += len; + ored_offset = end_offset + | REC_2BYTE_SQL_NULL_MASK; + } else { + /* If the data is not SQL null, store it */ + len = dfield_get_len(field); + + memcpy(rec + end_offset, + dfield_get_data(field), len); + + end_offset += len; + ored_offset = end_offset; + + if (dfield_is_ext(field)) { + ored_offset |= REC_2BYTE_EXTERN_MASK; + } + } + + rec_2_set_field_end_info(rec, i, ored_offset); + } + } + + return(rec); +} + +/************************************************************* +Builds a ROW_FORMAT=COMPACT record out of a data tuple. */ +UNIV_INTERN +void +rec_convert_dtuple_to_rec_comp( +/*===========================*/ + rec_t* rec, /* in: origin of record */ + ulint extra, /* in: number of bytes to + reserve between the record + header and the data payload + (normally REC_N_NEW_EXTRA_BYTES) */ + const dict_index_t* index, /* in: record descriptor */ + ulint status, /* in: status bits of the record */ + const dfield_t* fields, /* in: array of data fields */ + ulint n_fields)/* in: number of data fields */ +{ + const dfield_t* field; + const dtype_t* type; + byte* end; + byte* nulls; + byte* lens; + ulint len; + ulint i; + ulint n_node_ptr_field; + ulint fixed_len; + ulint null_mask = 1; + ut_ad(extra == 0 || dict_table_is_comp(index->table)); + ut_ad(extra == 0 || extra == REC_N_NEW_EXTRA_BYTES); + ut_ad(n_fields > 0); + + switch (UNIV_EXPECT(status, REC_STATUS_ORDINARY)) { + case REC_STATUS_ORDINARY: + ut_ad(n_fields <= dict_index_get_n_fields(index)); + n_node_ptr_field = ULINT_UNDEFINED; + break; + case REC_STATUS_NODE_PTR: + ut_ad(n_fields == dict_index_get_n_unique_in_tree(index) + 1); + n_node_ptr_field = n_fields - 1; + break; + case REC_STATUS_INFIMUM: + case REC_STATUS_SUPREMUM: + ut_ad(n_fields == 1); + n_node_ptr_field = ULINT_UNDEFINED; + break; + default: + ut_error; + return; + } + + end = rec; + nulls = rec - (extra + 1); + lens = nulls - UT_BITS_IN_BYTES(index->n_nullable); + /* clear the SQL-null flags */ + memset(lens + 1, 0, nulls - lens); + + /* Store the data and the offsets */ + + for (i = 0, field = fields; i < n_fields; i++, field++) { + type = dfield_get_type(field); + len = dfield_get_len(field); + + if (UNIV_UNLIKELY(i == n_node_ptr_field)) { + ut_ad(dtype_get_prtype(type) & DATA_NOT_NULL); + ut_ad(len == 4); + memcpy(end, dfield_get_data(field), len); + end += 4; + break; + } + + if (!(dtype_get_prtype(type) & DATA_NOT_NULL)) { + /* nullable field */ + ut_ad(index->n_nullable > 0); + + if (UNIV_UNLIKELY(!(byte) null_mask)) { + nulls--; + null_mask = 1; + } + + ut_ad(*nulls < null_mask); + + /* set the null flag if necessary */ + if (dfield_is_null(field)) { + *nulls |= null_mask; + null_mask <<= 1; + continue; + } + + null_mask <<= 1; + } + /* only nullable fields can be null */ + ut_ad(!dfield_is_null(field)); + + fixed_len = dict_index_get_nth_field(index, i)->fixed_len; + + if (fixed_len) { + ut_ad(len == fixed_len); + ut_ad(!dfield_is_ext(field)); + } else if (dfield_is_ext(field)) { + ut_ad(len <= REC_MAX_INDEX_COL_LEN + + BTR_EXTERN_FIELD_REF_SIZE); + *lens-- = (byte) (len >> 8) | 0xc0; + *lens-- = (byte) len; + } else { + ut_ad(len <= dtype_get_len(type) + || dtype_get_mtype(type) == DATA_BLOB); + if (len < 128 + || (dtype_get_len(type) < 256 + && dtype_get_mtype(type) != DATA_BLOB)) { + + *lens-- = (byte) len; + } else { + ut_ad(len < 16384); + *lens-- = (byte) (len >> 8) | 0x80; + *lens-- = (byte) len; + } + } + + memcpy(end, dfield_get_data(field), len); + end += len; + } +} + +/************************************************************* +Builds a new-style physical record out of a data tuple and +stores it beginning from the start of the given buffer. */ +static +rec_t* +rec_convert_dtuple_to_rec_new( +/*==========================*/ + /* out: pointer to the origin + of physical record */ + byte* buf, /* in: start address of + the physical record */ + const dict_index_t* index, /* in: record descriptor */ + const dtuple_t* dtuple) /* in: data tuple */ +{ + ulint extra_size; + ulint status; + rec_t* rec; + + status = dtuple_get_info_bits(dtuple) & REC_NEW_STATUS_MASK; + rec_get_converted_size_comp(index, status, + dtuple->fields, dtuple->n_fields, + &extra_size); + rec = buf + extra_size; + + rec_convert_dtuple_to_rec_comp( + rec, REC_N_NEW_EXTRA_BYTES, index, status, + dtuple->fields, dtuple->n_fields); + + /* Set the info bits of the record */ + rec_set_info_and_status_bits(rec, dtuple_get_info_bits(dtuple)); + + return(rec); +} + +/************************************************************* +Builds a physical record out of a data tuple and +stores it beginning from the start of the given buffer. */ +UNIV_INTERN +rec_t* +rec_convert_dtuple_to_rec( +/*======================*/ + /* out: pointer to the origin + of physical record */ + byte* buf, /* in: start address of the + physical record */ + const dict_index_t* index, /* in: record descriptor */ + const dtuple_t* dtuple, /* in: data tuple */ + ulint n_ext) /* in: number of + externally stored columns */ +{ + rec_t* rec; + + ut_ad(buf && index && dtuple); + ut_ad(dtuple_validate(dtuple)); + ut_ad(dtuple_check_typed(dtuple)); + + if (dict_table_is_comp(index->table)) { + rec = rec_convert_dtuple_to_rec_new(buf, index, dtuple); + } else { + rec = rec_convert_dtuple_to_rec_old(buf, dtuple, n_ext); + } + +#ifdef UNIV_DEBUG + { + mem_heap_t* heap = NULL; + ulint offsets_[REC_OFFS_NORMAL_SIZE]; + const ulint* offsets; + rec_offs_init(offsets_); + + offsets = rec_get_offsets(rec, index, + offsets_, ULINT_UNDEFINED, &heap); + ut_ad(rec_validate(rec, offsets)); + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } + } +#endif /* UNIV_DEBUG */ + return(rec); +} + +/****************************************************************** +Copies the first n fields of a physical record to a data tuple. The fields +are copied to the memory heap. */ +UNIV_INTERN +void +rec_copy_prefix_to_dtuple( +/*======================*/ + dtuple_t* tuple, /* out: data tuple */ + const rec_t* rec, /* in: physical record */ + const dict_index_t* index, /* in: record descriptor */ + ulint n_fields, /* in: number of fields + to copy */ + mem_heap_t* heap) /* in: memory heap */ +{ + ulint i; + ulint offsets_[REC_OFFS_NORMAL_SIZE]; + ulint* offsets = offsets_; + rec_offs_init(offsets_); + + offsets = rec_get_offsets(rec, index, offsets, n_fields, &heap); + + ut_ad(rec_validate(rec, offsets)); + ut_ad(dtuple_check_typed(tuple)); + + dtuple_set_info_bits(tuple, rec_get_info_bits( + rec, dict_table_is_comp(index->table))); + + for (i = 0; i < n_fields; i++) { + dfield_t* field; + const byte* data; + ulint len; + + field = dtuple_get_nth_field(tuple, i); + data = rec_get_nth_field(rec, offsets, i, &len); + + if (len != UNIV_SQL_NULL) { + dfield_set_data(field, + mem_heap_dup(heap, data, len), len); + ut_ad(!rec_offs_nth_extern(offsets, i)); + } else { + dfield_set_null(field); + } + } +} + +/****************************************************************** +Copies the first n fields of an old-style physical record +to a new physical record in a buffer. */ +static +rec_t* +rec_copy_prefix_to_buf_old( +/*=======================*/ + /* out, own: copied record */ + const rec_t* rec, /* in: physical record */ + ulint n_fields, /* in: number of fields to copy */ + ulint area_end, /* in: end of the prefix data */ + byte** buf, /* in/out: memory buffer for + the copied prefix, or NULL */ + ulint* buf_size) /* in/out: buffer size */ +{ + rec_t* copy_rec; + ulint area_start; + ulint prefix_len; + + if (rec_get_1byte_offs_flag(rec)) { + area_start = REC_N_OLD_EXTRA_BYTES + n_fields; + } else { + area_start = REC_N_OLD_EXTRA_BYTES + 2 * n_fields; + } + + prefix_len = area_start + area_end; + + if ((*buf == NULL) || (*buf_size < prefix_len)) { + if (*buf != NULL) { + mem_free(*buf); + } + + *buf = mem_alloc2(prefix_len, buf_size); + } + + ut_memcpy(*buf, rec - area_start, prefix_len); + + copy_rec = *buf + area_start; + + rec_set_n_fields_old(copy_rec, n_fields); + + return(copy_rec); +} + +/****************************************************************** +Copies the first n fields of a physical record to a new physical record in +a buffer. */ +UNIV_INTERN +rec_t* +rec_copy_prefix_to_buf( +/*===================*/ + /* out, own: copied record */ + const rec_t* rec, /* in: physical record */ + const dict_index_t* index, /* in: record descriptor */ + ulint n_fields, /* in: number of fields + to copy */ + byte** buf, /* in/out: memory buffer + for the copied prefix, + or NULL */ + ulint* buf_size) /* in/out: buffer size */ +{ + const byte* nulls; + const byte* lens; + ulint i; + ulint prefix_len; + ulint null_mask; + ulint status; + + UNIV_PREFETCH_RW(*buf); + + if (!dict_table_is_comp(index->table)) { + ut_ad(rec_validate_old(rec)); + return(rec_copy_prefix_to_buf_old( + rec, n_fields, + rec_get_field_start_offs(rec, n_fields), + buf, buf_size)); + } + + status = rec_get_status(rec); + + switch (status) { + case REC_STATUS_ORDINARY: + ut_ad(n_fields <= dict_index_get_n_fields(index)); + break; + case REC_STATUS_NODE_PTR: + /* it doesn't make sense to copy the child page number field */ + ut_ad(n_fields <= dict_index_get_n_unique_in_tree(index)); + break; + case REC_STATUS_INFIMUM: + case REC_STATUS_SUPREMUM: + /* infimum or supremum record: no sense to copy anything */ + default: + ut_error; + return(NULL); + } + + nulls = rec - (REC_N_NEW_EXTRA_BYTES + 1); + lens = nulls - UT_BITS_IN_BYTES(index->n_nullable); + UNIV_PREFETCH_R(lens); + prefix_len = 0; + null_mask = 1; + + /* read the lengths of fields 0..n */ + for (i = 0; i < n_fields; i++) { + const dict_field_t* field; + const dict_col_t* col; + + field = dict_index_get_nth_field(index, i); + col = dict_field_get_col(field); + + if (!(col->prtype & DATA_NOT_NULL)) { + /* nullable field => read the null flag */ + if (UNIV_UNLIKELY(!(byte) null_mask)) { + nulls--; + null_mask = 1; + } + + if (*nulls & null_mask) { + null_mask <<= 1; + continue; + } + + null_mask <<= 1; + } + + if (field->fixed_len) { + prefix_len += field->fixed_len; + } else { + ulint len = *lens--; + if (col->len > 255 || col->mtype == DATA_BLOB) { + if (len & 0x80) { + /* 1exxxxxx */ + len &= 0x3f; + len <<= 8; + len |= *lens--; + UNIV_PREFETCH_R(lens); + } + } + prefix_len += len; + } + } + + UNIV_PREFETCH_R(rec + prefix_len); + + prefix_len += rec - (lens + 1); + + if ((*buf == NULL) || (*buf_size < prefix_len)) { + if (*buf != NULL) { + mem_free(*buf); + } + + *buf = mem_alloc2(prefix_len, buf_size); + } + + memcpy(*buf, lens + 1, prefix_len); + + return(*buf + (rec - (lens + 1))); +} + +/******************************************************************* +Validates the consistency of an old-style physical record. */ +static +ibool +rec_validate_old( +/*=============*/ + /* out: TRUE if ok */ + const rec_t* rec) /* in: physical record */ +{ + const byte* data; + ulint len; + ulint n_fields; + ulint len_sum = 0; + ulint sum = 0; + ulint i; + + ut_a(rec); + n_fields = rec_get_n_fields_old(rec); + + if ((n_fields == 0) || (n_fields > REC_MAX_N_FIELDS)) { + fprintf(stderr, "InnoDB: Error: record has %lu fields\n", + (ulong) n_fields); + return(FALSE); + } + + for (i = 0; i < n_fields; i++) { + data = rec_get_nth_field_old(rec, i, &len); + + if (!((len < UNIV_PAGE_SIZE) || (len == UNIV_SQL_NULL))) { + fprintf(stderr, + "InnoDB: Error: record field %lu len %lu\n", + (ulong) i, + (ulong) len); + return(FALSE); + } + + if (len != UNIV_SQL_NULL) { + len_sum += len; + sum += *(data + len -1); /* dereference the + end of the field to + cause a memory trap + if possible */ + } else { + len_sum += rec_get_nth_field_size(rec, i); + } + } + + if (len_sum != rec_get_data_size_old(rec)) { + fprintf(stderr, + "InnoDB: Error: record len should be %lu, len %lu\n", + (ulong) len_sum, + rec_get_data_size_old(rec)); + return(FALSE); + } + + rec_dummy = sum; /* This is here only to fool the compiler */ + + return(TRUE); +} + +/******************************************************************* +Validates the consistency of a physical record. */ +UNIV_INTERN +ibool +rec_validate( +/*=========*/ + /* out: TRUE if ok */ + const rec_t* rec, /* in: physical record */ + const ulint* offsets)/* in: array returned by rec_get_offsets() */ +{ + const byte* data; + ulint len; + ulint n_fields; + ulint len_sum = 0; + ulint sum = 0; + ulint i; + + ut_a(rec); + n_fields = rec_offs_n_fields(offsets); + + if ((n_fields == 0) || (n_fields > REC_MAX_N_FIELDS)) { + fprintf(stderr, "InnoDB: Error: record has %lu fields\n", + (ulong) n_fields); + return(FALSE); + } + + ut_a(rec_offs_comp(offsets) || n_fields <= rec_get_n_fields_old(rec)); + + for (i = 0; i < n_fields; i++) { + data = rec_get_nth_field(rec, offsets, i, &len); + + if (!((len < UNIV_PAGE_SIZE) || (len == UNIV_SQL_NULL))) { + fprintf(stderr, + "InnoDB: Error: record field %lu len %lu\n", + (ulong) i, + (ulong) len); + return(FALSE); + } + + if (len != UNIV_SQL_NULL) { + len_sum += len; + sum += *(data + len -1); /* dereference the + end of the field to + cause a memory trap + if possible */ + } else if (!rec_offs_comp(offsets)) { + len_sum += rec_get_nth_field_size(rec, i); + } + } + + if (len_sum != rec_offs_data_size(offsets)) { + fprintf(stderr, + "InnoDB: Error: record len should be %lu, len %lu\n", + (ulong) len_sum, + (ulong) rec_offs_data_size(offsets)); + return(FALSE); + } + + rec_dummy = sum; /* This is here only to fool the compiler */ + + if (!rec_offs_comp(offsets)) { + ut_a(rec_validate_old(rec)); + } + + return(TRUE); +} + +/******************************************************************* +Prints an old-style physical record. */ +UNIV_INTERN +void +rec_print_old( +/*==========*/ + FILE* file, /* in: file where to print */ + const rec_t* rec) /* in: physical record */ +{ + const byte* data; + ulint len; + ulint n; + ulint i; + + ut_ad(rec); + + n = rec_get_n_fields_old(rec); + + fprintf(file, "PHYSICAL RECORD: n_fields %lu;" + " %u-byte offsets; info bits %lu\n", + (ulong) n, + rec_get_1byte_offs_flag(rec) ? 1 : 2, + (ulong) rec_get_info_bits(rec, FALSE)); + + for (i = 0; i < n; i++) { + + data = rec_get_nth_field_old(rec, i, &len); + + fprintf(file, " %lu:", (ulong) i); + + if (len != UNIV_SQL_NULL) { + if (len <= 30) { + + ut_print_buf(file, data, len); + } else { + ut_print_buf(file, data, 30); + + fprintf(file, " (total %lu bytes)", + (ulong) len); + } + } else { + fprintf(file, " SQL NULL, size %lu ", + rec_get_nth_field_size(rec, i)); + } + + putc(';', file); + putc('\n', file); + } + + rec_validate_old(rec); +} + +/******************************************************************* +Prints a physical record in ROW_FORMAT=COMPACT. Ignores the +record header. */ +UNIV_INTERN +void +rec_print_comp( +/*===========*/ + FILE* file, /* in: file where to print */ + const rec_t* rec, /* in: physical record */ + const ulint* offsets)/* in: array returned by rec_get_offsets() */ +{ + ulint i; + + for (i = 0; i < rec_offs_n_fields(offsets); i++) { + const byte* data; + ulint len; + + data = rec_get_nth_field(rec, offsets, i, &len); + + fprintf(file, " %lu:", (ulong) i); + + if (len != UNIV_SQL_NULL) { + if (len <= 30) { + + ut_print_buf(file, data, len); + } else { + ut_print_buf(file, data, 30); + + fprintf(file, " (total %lu bytes)", + (ulong) len); + } + } else { + fputs(" SQL NULL", file); + } + putc(';', file); + putc('\n', file); + } +} + +/******************************************************************* +Prints a physical record. */ +UNIV_INTERN +void +rec_print_new( +/*==========*/ + FILE* file, /* in: file where to print */ + const rec_t* rec, /* in: physical record */ + const ulint* offsets)/* in: array returned by rec_get_offsets() */ +{ + ut_ad(rec); + ut_ad(offsets); + ut_ad(rec_offs_validate(rec, NULL, offsets)); + + if (!rec_offs_comp(offsets)) { + rec_print_old(file, rec); + return; + } + + fprintf(file, "PHYSICAL RECORD: n_fields %lu;" + " compact format; info bits %lu\n", + (ulong) rec_offs_n_fields(offsets), + (ulong) rec_get_info_bits(rec, TRUE)); + + rec_print_comp(file, rec, offsets); + rec_validate(rec, offsets); +} + +/******************************************************************* +Prints a physical record. */ +UNIV_INTERN +void +rec_print( +/*======*/ + FILE* file, /* in: file where to print */ + const rec_t* rec, /* in: physical record */ + dict_index_t* index) /* in: record descriptor */ +{ + ut_ad(index); + + if (!dict_table_is_comp(index->table)) { + rec_print_old(file, rec); + return; + } else { + mem_heap_t* heap = NULL; + ulint offsets_[REC_OFFS_NORMAL_SIZE]; + rec_offs_init(offsets_); + + rec_print_new(file, rec, + rec_get_offsets(rec, index, offsets_, + ULINT_UNDEFINED, &heap)); + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } + } +} === added directory 'storage/xtradb/row' === added file 'storage/xtradb/row/row0ext.c' --- a/storage/xtradb/row/row0ext.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/row/row0ext.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,114 @@ +/***************************************************************************** + +Copyright (c) 2006, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Caching of externally stored column prefixes + +Created September 2006 Marko Makela +*******************************************************/ + +#include "row0ext.h" + +#ifdef UNIV_NONINL +#include "row0ext.ic" +#endif + +#include "btr0cur.h" + +/************************************************************************ +Fills the column prefix cache of an externally stored column. */ +static +void +row_ext_cache_fill( +/*===============*/ + row_ext_t* ext, /* in/out: column prefix cache */ + ulint i, /* in: index of ext->ext[] */ + ulint zip_size,/* compressed page size in bytes, or 0 */ + const dfield_t* dfield) /* in: data field */ +{ + const byte* field = dfield_get_data(dfield); + ulint f_len = dfield_get_len(dfield); + byte* buf = ext->buf + i * REC_MAX_INDEX_COL_LEN; + + ut_ad(i < ext->n_ext); + ut_ad(dfield_is_ext(dfield)); + ut_a(f_len >= BTR_EXTERN_FIELD_REF_SIZE); + + if (UNIV_UNLIKELY(!memcmp(field_ref_zero, + field + f_len - BTR_EXTERN_FIELD_REF_SIZE, + BTR_EXTERN_FIELD_REF_SIZE))) { + /* The BLOB pointer is not set: we cannot fetch it */ + ext->len[i] = 0; + } else { + /* Fetch at most REC_MAX_INDEX_COL_LEN of the column. + The column should be non-empty. However, + trx_rollback_or_clean_all_recovered() may try to + access a half-deleted BLOB if the server previously + crashed during the execution of + btr_free_externally_stored_field(). */ + ext->len[i] = btr_copy_externally_stored_field_prefix( + buf, REC_MAX_INDEX_COL_LEN, zip_size, field, f_len); + } +} + +/************************************************************************ +Creates a cache of column prefixes of externally stored columns. */ +UNIV_INTERN +row_ext_t* +row_ext_create( +/*===========*/ + /* out,own: column prefix cache */ + ulint n_ext, /* in: number of externally stored columns */ + const ulint* ext, /* in: col_no's of externally stored columns + in the InnoDB table object, as reported by + dict_col_get_no(); NOT relative to the records + in the clustered index */ + const dtuple_t* tuple, /* in: data tuple containing the field + references of the externally stored + columns; must be indexed by col_no; + the clustered index record must be + covered by a lock or a page latch + to prevent deletion (rollback or purge). */ + ulint zip_size,/* compressed page size in bytes, or 0 */ + mem_heap_t* heap) /* in: heap where created */ +{ + ulint i; + row_ext_t* ret = mem_heap_alloc(heap, (sizeof *ret) + + (n_ext - 1) * sizeof ret->len); + + ut_ad(ut_is_2pow(zip_size)); + ut_ad(zip_size <= UNIV_PAGE_SIZE); + + ret->n_ext = n_ext; + ret->ext = ext; + ret->buf = mem_heap_alloc(heap, n_ext * REC_MAX_INDEX_COL_LEN); +#ifdef UNIV_DEBUG + memset(ret->buf, 0xaa, n_ext * REC_MAX_INDEX_COL_LEN); + UNIV_MEM_ALLOC(ret->buf, n_ext * REC_MAX_INDEX_COL_LEN); +#endif + + /* Fetch the BLOB prefixes */ + for (i = 0; i < n_ext; i++) { + const dfield_t* dfield; + + dfield = dtuple_get_nth_field(tuple, ext[i]); + row_ext_cache_fill(ret, i, zip_size, dfield); + } + + return(ret); +} === added file 'storage/xtradb/row/row0ins.c' --- a/storage/xtradb/row/row0ins.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/row/row0ins.c 2009-06-09 12:21:26 +0000 @@ -0,0 +1,2558 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Insert into a table + +Created 4/20/1996 Heikki Tuuri +*******************************************************/ + +#include "row0ins.h" + +#ifdef UNIV_NONINL +#include "row0ins.ic" +#endif + +#include "dict0dict.h" +#include "dict0boot.h" +#include "trx0undo.h" +#include "btr0btr.h" +#include "btr0cur.h" +#include "mach0data.h" +#include "que0que.h" +#include "row0upd.h" +#include "row0sel.h" +#include "row0row.h" +#include "rem0cmp.h" +#include "lock0lock.h" +#include "log0log.h" +#include "eval0eval.h" +#include "data0data.h" +#include "usr0sess.h" +#include "buf0lru.h" + +#define ROW_INS_PREV 1 +#define ROW_INS_NEXT 2 + + +/********************************************************************* +This prototype is copied from /mysql/sql/ha_innodb.cc. +Invalidates the MySQL query cache for the table. +NOTE that the exact prototype of this function has to be in +/xtradb/row/row0ins.c! */ +extern +void +innobase_invalidate_query_cache( +/*============================*/ + trx_t* trx, /* in: transaction which modifies the table */ + char* full_name, /* in: concatenation of database name, null + char '\0', table name, null char'\0'; + NOTE that in Windows this is always + in LOWER CASE! */ + ulint full_name_len); /* in: full name length where also the null + chars count */ + +/************************************************************************* +Creates an insert node struct. */ +UNIV_INTERN +ins_node_t* +ins_node_create( +/*============*/ + /* out, own: insert node struct */ + ulint ins_type, /* in: INS_VALUES, ... */ + dict_table_t* table, /* in: table where to insert */ + mem_heap_t* heap) /* in: mem heap where created */ +{ + ins_node_t* node; + + node = mem_heap_alloc(heap, sizeof(ins_node_t)); + + node->common.type = QUE_NODE_INSERT; + + node->ins_type = ins_type; + + node->state = INS_NODE_SET_IX_LOCK; + node->table = table; + node->index = NULL; + node->entry = NULL; + + node->select = NULL; + + node->trx_id = ut_dulint_zero; + + node->entry_sys_heap = mem_heap_create(128); + + node->magic_n = INS_NODE_MAGIC_N; + + return(node); +} + +/*************************************************************** +Creates an entry template for each index of a table. */ +UNIV_INTERN +void +ins_node_create_entry_list( +/*=======================*/ + ins_node_t* node) /* in: row insert node */ +{ + dict_index_t* index; + dtuple_t* entry; + + ut_ad(node->entry_sys_heap); + + UT_LIST_INIT(node->entry_list); + + index = dict_table_get_first_index(node->table); + + while (index != NULL) { + entry = row_build_index_entry(node->row, NULL, index, + node->entry_sys_heap); + UT_LIST_ADD_LAST(tuple_list, node->entry_list, entry); + + index = dict_table_get_next_index(index); + } +} + +/********************************************************************* +Adds system field buffers to a row. */ +static +void +row_ins_alloc_sys_fields( +/*=====================*/ + ins_node_t* node) /* in: insert node */ +{ + dtuple_t* row; + dict_table_t* table; + mem_heap_t* heap; + const dict_col_t* col; + dfield_t* dfield; + byte* ptr; + + row = node->row; + table = node->table; + heap = node->entry_sys_heap; + + ut_ad(row && table && heap); + ut_ad(dtuple_get_n_fields(row) == dict_table_get_n_cols(table)); + + /* 1. Allocate buffer for row id */ + + col = dict_table_get_sys_col(table, DATA_ROW_ID); + + dfield = dtuple_get_nth_field(row, dict_col_get_no(col)); + + ptr = mem_heap_alloc(heap, DATA_ROW_ID_LEN); + + dfield_set_data(dfield, ptr, DATA_ROW_ID_LEN); + + node->row_id_buf = ptr; + + /* 3. Allocate buffer for trx id */ + + col = dict_table_get_sys_col(table, DATA_TRX_ID); + + dfield = dtuple_get_nth_field(row, dict_col_get_no(col)); + ptr = mem_heap_alloc(heap, DATA_TRX_ID_LEN); + + dfield_set_data(dfield, ptr, DATA_TRX_ID_LEN); + + node->trx_id_buf = ptr; + + /* 4. Allocate buffer for roll ptr */ + + col = dict_table_get_sys_col(table, DATA_ROLL_PTR); + + dfield = dtuple_get_nth_field(row, dict_col_get_no(col)); + ptr = mem_heap_alloc(heap, DATA_ROLL_PTR_LEN); + + dfield_set_data(dfield, ptr, DATA_ROLL_PTR_LEN); +} + +/************************************************************************* +Sets a new row to insert for an INS_DIRECT node. This function is only used +if we have constructed the row separately, which is a rare case; this +function is quite slow. */ +UNIV_INTERN +void +ins_node_set_new_row( +/*=================*/ + ins_node_t* node, /* in: insert node */ + dtuple_t* row) /* in: new row (or first row) for the node */ +{ + node->state = INS_NODE_SET_IX_LOCK; + node->index = NULL; + node->entry = NULL; + + node->row = row; + + mem_heap_empty(node->entry_sys_heap); + + /* Create templates for index entries */ + + ins_node_create_entry_list(node); + + /* Allocate from entry_sys_heap buffers for sys fields */ + + row_ins_alloc_sys_fields(node); + + /* As we allocated a new trx id buf, the trx id should be written + there again: */ + + node->trx_id = ut_dulint_zero; +} + +/*********************************************************************** +Does an insert operation by updating a delete-marked existing record +in the index. This situation can occur if the delete-marked record is +kept in the index for consistent reads. */ +static +ulint +row_ins_sec_index_entry_by_modify( +/*==============================*/ + /* out: DB_SUCCESS or error code */ + ulint mode, /* in: BTR_MODIFY_LEAF or BTR_MODIFY_TREE, + depending on whether mtr holds just a leaf + latch or also a tree latch */ + btr_cur_t* cursor, /* in: B-tree cursor */ + const dtuple_t* entry, /* in: index entry to insert */ + que_thr_t* thr, /* in: query thread */ + mtr_t* mtr) /* in: mtr; must be committed before + latching any further pages */ +{ + big_rec_t* dummy_big_rec; + mem_heap_t* heap; + upd_t* update; + rec_t* rec; + ulint err; + + rec = btr_cur_get_rec(cursor); + + ut_ad(!dict_index_is_clust(cursor->index)); + ut_ad(rec_get_deleted_flag(rec, + dict_table_is_comp(cursor->index->table))); + + /* We know that in the alphabetical ordering, entry and rec are + identified. But in their binary form there may be differences if + there are char fields in them. Therefore we have to calculate the + difference. */ + + heap = mem_heap_create(1024); + + update = row_upd_build_sec_rec_difference_binary( + cursor->index, entry, rec, thr_get_trx(thr), heap); + if (mode == BTR_MODIFY_LEAF) { + /* Try an optimistic updating of the record, keeping changes + within the page */ + + err = btr_cur_optimistic_update(BTR_KEEP_SYS_FLAG, cursor, + update, 0, thr, mtr); + switch (err) { + case DB_OVERFLOW: + case DB_UNDERFLOW: + case DB_ZIP_OVERFLOW: + err = DB_FAIL; + } + } else { + ut_a(mode == BTR_MODIFY_TREE); + if (buf_LRU_buf_pool_running_out()) { + + err = DB_LOCK_TABLE_FULL; + + goto func_exit; + } + + err = btr_cur_pessimistic_update(BTR_KEEP_SYS_FLAG, cursor, + &heap, &dummy_big_rec, update, + 0, thr, mtr); + ut_ad(!dummy_big_rec); + } +func_exit: + mem_heap_free(heap); + + return(err); +} + +/*********************************************************************** +Does an insert operation by delete unmarking and updating a delete marked +existing record in the index. This situation can occur if the delete marked +record is kept in the index for consistent reads. */ +static +ulint +row_ins_clust_index_entry_by_modify( +/*================================*/ + /* out: DB_SUCCESS, DB_FAIL, or error code */ + ulint mode, /* in: BTR_MODIFY_LEAF or BTR_MODIFY_TREE, + depending on whether mtr holds just a leaf + latch or also a tree latch */ + btr_cur_t* cursor, /* in: B-tree cursor */ + mem_heap_t** heap, /* in/out: pointer to memory heap, or NULL */ + big_rec_t** big_rec,/* out: possible big rec vector of fields + which have to be stored externally by the + caller */ + const dtuple_t* entry, /* in: index entry to insert */ + que_thr_t* thr, /* in: query thread */ + mtr_t* mtr) /* in: mtr; must be committed before + latching any further pages */ +{ + rec_t* rec; + upd_t* update; + ulint err; + + ut_ad(dict_index_is_clust(cursor->index)); + + *big_rec = NULL; + + rec = btr_cur_get_rec(cursor); + + ut_ad(rec_get_deleted_flag(rec, + dict_table_is_comp(cursor->index->table))); + + if (!*heap) { + *heap = mem_heap_create(1024); + } + + /* Build an update vector containing all the fields to be modified; + NOTE that this vector may NOT contain system columns trx_id or + roll_ptr */ + + update = row_upd_build_difference_binary(cursor->index, entry, rec, + thr_get_trx(thr), *heap); + if (mode == BTR_MODIFY_LEAF) { + /* Try optimistic updating of the record, keeping changes + within the page */ + + err = btr_cur_optimistic_update(0, cursor, update, 0, thr, + mtr); + switch (err) { + case DB_OVERFLOW: + case DB_UNDERFLOW: + case DB_ZIP_OVERFLOW: + err = DB_FAIL; + } + } else { + ut_a(mode == BTR_MODIFY_TREE); + if (buf_LRU_buf_pool_running_out()) { + + return(DB_LOCK_TABLE_FULL); + + } + err = btr_cur_pessimistic_update(0, cursor, + heap, big_rec, update, + 0, thr, mtr); + } + + return(err); +} + +/************************************************************************* +Returns TRUE if in a cascaded update/delete an ancestor node of node +updates (not DELETE, but UPDATE) table. */ +static +ibool +row_ins_cascade_ancestor_updates_table( +/*===================================*/ + /* out: TRUE if an ancestor updates table */ + que_node_t* node, /* in: node in a query graph */ + dict_table_t* table) /* in: table */ +{ + que_node_t* parent; + upd_node_t* upd_node; + + parent = que_node_get_parent(node); + + while (que_node_get_type(parent) == QUE_NODE_UPDATE) { + + upd_node = parent; + + if (upd_node->table == table && upd_node->is_delete == FALSE) { + + return(TRUE); + } + + parent = que_node_get_parent(parent); + + ut_a(parent); + } + + return(FALSE); +} + +/************************************************************************* +Returns the number of ancestor UPDATE or DELETE nodes of a +cascaded update/delete node. */ +static +ulint +row_ins_cascade_n_ancestors( +/*========================*/ + /* out: number of ancestors */ + que_node_t* node) /* in: node in a query graph */ +{ + que_node_t* parent; + ulint n_ancestors = 0; + + parent = que_node_get_parent(node); + + while (que_node_get_type(parent) == QUE_NODE_UPDATE) { + n_ancestors++; + + parent = que_node_get_parent(parent); + + ut_a(parent); + } + + return(n_ancestors); +} + +/********************************************************************** +Calculates the update vector node->cascade->update for a child table in +a cascaded update. */ +static +ulint +row_ins_cascade_calc_update_vec( +/*============================*/ + /* out: number of fields in the + calculated update vector; the value + can also be 0 if no foreign key + fields changed; the returned value + is ULINT_UNDEFINED if the column + type in the child table is too short + to fit the new value in the parent + table: that means the update fails */ + upd_node_t* node, /* in: update node of the parent + table */ + dict_foreign_t* foreign, /* in: foreign key constraint whose + type is != 0 */ + mem_heap_t* heap) /* in: memory heap to use as + temporary storage */ +{ + upd_node_t* cascade = node->cascade_node; + dict_table_t* table = foreign->foreign_table; + dict_index_t* index = foreign->foreign_index; + upd_t* update; + upd_field_t* ufield; + dict_table_t* parent_table; + dict_index_t* parent_index; + upd_t* parent_update; + upd_field_t* parent_ufield; + ulint n_fields_updated; + ulint parent_field_no; + ulint i; + ulint j; + + ut_a(node); + ut_a(foreign); + ut_a(cascade); + ut_a(table); + ut_a(index); + + /* Calculate the appropriate update vector which will set the fields + in the child index record to the same value (possibly padded with + spaces if the column is a fixed length CHAR or FIXBINARY column) as + the referenced index record will get in the update. */ + + parent_table = node->table; + ut_a(parent_table == foreign->referenced_table); + parent_index = foreign->referenced_index; + parent_update = node->update; + + update = cascade->update; + + update->info_bits = 0; + update->n_fields = foreign->n_fields; + + n_fields_updated = 0; + + for (i = 0; i < foreign->n_fields; i++) { + + parent_field_no = dict_table_get_nth_col_pos( + parent_table, + dict_index_get_nth_col_no(parent_index, i)); + + for (j = 0; j < parent_update->n_fields; j++) { + parent_ufield = parent_update->fields + j; + + if (parent_ufield->field_no == parent_field_no) { + + ulint min_size; + const dict_col_t* col; + ulint ufield_len; + + col = dict_index_get_nth_col(index, i); + + /* A field in the parent index record is + updated. Let us make the update vector + field for the child table. */ + + ufield = update->fields + n_fields_updated; + + ufield->field_no + = dict_table_get_nth_col_pos( + table, dict_col_get_no(col)); + ufield->exp = NULL; + + ufield->new_val = parent_ufield->new_val; + ufield_len = dfield_get_len(&ufield->new_val); + + /* Clear the "external storage" flag */ + dfield_set_len(&ufield->new_val, ufield_len); + + /* Do not allow a NOT NULL column to be + updated as NULL */ + + if (dfield_is_null(&ufield->new_val) + && (col->prtype & DATA_NOT_NULL)) { + + return(ULINT_UNDEFINED); + } + + /* If the new value would not fit in the + column, do not allow the update */ + + if (!dfield_is_null(&ufield->new_val) + && dtype_get_at_most_n_mbchars( + col->prtype, + col->mbminlen, col->mbmaxlen, + col->len, + ufield_len, + dfield_get_data(&ufield->new_val)) + < ufield_len) { + + return(ULINT_UNDEFINED); + } + + /* If the parent column type has a different + length than the child column type, we may + need to pad with spaces the new value of the + child column */ + + min_size = dict_col_get_min_size(col); + + /* Because UNIV_SQL_NULL (the marker + of SQL NULL values) exceeds all possible + values of min_size, the test below will + not hold for SQL NULL columns. */ + + if (min_size > ufield_len) { + + char* pad_start; + const char* pad_end; + char* padded_data + = mem_heap_alloc( + heap, min_size); + pad_start = padded_data + ufield_len; + pad_end = padded_data + min_size; + + memcpy(padded_data, + dfield_get_data(&ufield + ->new_val), + dfield_get_len(&ufield + ->new_val)); + + switch (UNIV_EXPECT(col->mbminlen,1)) { + default: + ut_error; + return(ULINT_UNDEFINED); + case 1: + if (UNIV_UNLIKELY + (dtype_get_charset_coll( + col->prtype) + == DATA_MYSQL_BINARY_CHARSET_COLL)) { + /* Do not pad BINARY + columns. */ + return(ULINT_UNDEFINED); + } + + /* space=0x20 */ + memset(pad_start, 0x20, + pad_end - pad_start); + break; + case 2: + /* space=0x0020 */ + ut_a(!(ufield_len % 2)); + ut_a(!(min_size % 2)); + do { + *pad_start++ = 0x00; + *pad_start++ = 0x20; + } while (pad_start < pad_end); + break; + } + + dfield_set_data(&ufield->new_val, + padded_data, min_size); + } + + n_fields_updated++; + } + } + } + + update->n_fields = n_fields_updated; + + return(n_fields_updated); +} + +/************************************************************************* +Set detailed error message associated with foreign key errors for +the given transaction. */ +static +void +row_ins_set_detailed( +/*=================*/ + trx_t* trx, /* in: transaction */ + dict_foreign_t* foreign) /* in: foreign key constraint */ +{ + mutex_enter(&srv_misc_tmpfile_mutex); + rewind(srv_misc_tmpfile); + + if (os_file_set_eof(srv_misc_tmpfile)) { + ut_print_name(srv_misc_tmpfile, trx, TRUE, + foreign->foreign_table_name); + dict_print_info_on_foreign_key_in_create_format( + srv_misc_tmpfile, trx, foreign, FALSE); + trx_set_detailed_error_from_file(trx, srv_misc_tmpfile); + } else { + trx_set_detailed_error(trx, "temp file operation failed"); + } + + mutex_exit(&srv_misc_tmpfile_mutex); +} + +/************************************************************************* +Reports a foreign key error associated with an update or a delete of a +parent table index entry. */ +static +void +row_ins_foreign_report_err( +/*=======================*/ + const char* errstr, /* in: error string from the viewpoint + of the parent table */ + que_thr_t* thr, /* in: query thread whose run_node + is an update node */ + dict_foreign_t* foreign, /* in: foreign key constraint */ + const rec_t* rec, /* in: a matching index record in the + child table */ + const dtuple_t* entry) /* in: index entry in the parent + table */ +{ + FILE* ef = dict_foreign_err_file; + trx_t* trx = thr_get_trx(thr); + + row_ins_set_detailed(trx, foreign); + + mutex_enter(&dict_foreign_err_mutex); + rewind(ef); + ut_print_timestamp(ef); + fputs(" Transaction:\n", ef); + trx_print(ef, trx, 600); + + fputs("Foreign key constraint fails for table ", ef); + ut_print_name(ef, trx, TRUE, foreign->foreign_table_name); + fputs(":\n", ef); + dict_print_info_on_foreign_key_in_create_format(ef, trx, foreign, + TRUE); + putc('\n', ef); + fputs(errstr, ef); + fputs(" in parent table, in index ", ef); + ut_print_name(ef, trx, FALSE, foreign->referenced_index->name); + if (entry) { + fputs(" tuple:\n", ef); + dtuple_print(ef, entry); + } + fputs("\nBut in child table ", ef); + ut_print_name(ef, trx, TRUE, foreign->foreign_table_name); + fputs(", in index ", ef); + ut_print_name(ef, trx, FALSE, foreign->foreign_index->name); + if (rec) { + fputs(", there is a record:\n", ef); + rec_print(ef, rec, foreign->foreign_index); + } else { + fputs(", the record is not available\n", ef); + } + putc('\n', ef); + + mutex_exit(&dict_foreign_err_mutex); +} + +/************************************************************************* +Reports a foreign key error to dict_foreign_err_file when we are trying +to add an index entry to a child table. Note that the adding may be the result +of an update, too. */ +static +void +row_ins_foreign_report_add_err( +/*===========================*/ + trx_t* trx, /* in: transaction */ + dict_foreign_t* foreign, /* in: foreign key constraint */ + const rec_t* rec, /* in: a record in the parent table: + it does not match entry because we + have an error! */ + const dtuple_t* entry) /* in: index entry to insert in the + child table */ +{ + FILE* ef = dict_foreign_err_file; + + row_ins_set_detailed(trx, foreign); + + mutex_enter(&dict_foreign_err_mutex); + rewind(ef); + ut_print_timestamp(ef); + fputs(" Transaction:\n", ef); + trx_print(ef, trx, 600); + fputs("Foreign key constraint fails for table ", ef); + ut_print_name(ef, trx, TRUE, foreign->foreign_table_name); + fputs(":\n", ef); + dict_print_info_on_foreign_key_in_create_format(ef, trx, foreign, + TRUE); + fputs("\nTrying to add in child table, in index ", ef); + ut_print_name(ef, trx, FALSE, foreign->foreign_index->name); + if (entry) { + fputs(" tuple:\n", ef); + /* TODO: DB_TRX_ID and DB_ROLL_PTR may be uninitialized. + It would be better to only display the user columns. */ + dtuple_print(ef, entry); + } + fputs("\nBut in parent table ", ef); + ut_print_name(ef, trx, TRUE, foreign->referenced_table_name); + fputs(", in index ", ef); + ut_print_name(ef, trx, FALSE, foreign->referenced_index->name); + fputs(",\nthe closest match we can find is record:\n", ef); + if (rec && page_rec_is_supremum(rec)) { + /* If the cursor ended on a supremum record, it is better + to report the previous record in the error message, so that + the user gets a more descriptive error message. */ + rec = page_rec_get_prev_const(rec); + } + + if (rec) { + rec_print(ef, rec, foreign->referenced_index); + } + putc('\n', ef); + + mutex_exit(&dict_foreign_err_mutex); +} + +/************************************************************************* +Invalidate the query cache for the given table. */ +static +void +row_ins_invalidate_query_cache( +/*===========================*/ + que_thr_t* thr, /* in: query thread whose run_node + is an update node */ + const char* name) /* in: table name prefixed with + database name and a '/' character */ +{ + char* buf; + char* ptr; + ulint len = strlen(name) + 1; + + buf = mem_strdupl(name, len); + + ptr = strchr(buf, '/'); + ut_a(ptr); + *ptr = '\0'; + + /* We call a function in ha_innodb.cc */ +#ifndef UNIV_HOTBACKUP + innobase_invalidate_query_cache(thr_get_trx(thr), buf, len); +#endif + mem_free(buf); +} + +/************************************************************************* +Perform referential actions or checks when a parent row is deleted or updated +and the constraint had an ON DELETE or ON UPDATE condition which was not +RESTRICT. */ +static +ulint +row_ins_foreign_check_on_constraint( +/*================================*/ + /* out: DB_SUCCESS, DB_LOCK_WAIT, + or error code */ + que_thr_t* thr, /* in: query thread whose run_node + is an update node */ + dict_foreign_t* foreign, /* in: foreign key constraint whose + type is != 0 */ + btr_pcur_t* pcur, /* in: cursor placed on a matching + index record in the child table */ + dtuple_t* entry, /* in: index entry in the parent + table */ + mtr_t* mtr) /* in: mtr holding the latch of pcur + page */ +{ + upd_node_t* node; + upd_node_t* cascade; + dict_table_t* table = foreign->foreign_table; + dict_index_t* index; + dict_index_t* clust_index; + dtuple_t* ref; + mem_heap_t* upd_vec_heap = NULL; + const rec_t* rec; + const rec_t* clust_rec; + const buf_block_t* clust_block; + upd_t* update; + ulint n_to_update; + ulint err; + ulint i; + trx_t* trx; + mem_heap_t* tmp_heap = NULL; + + ut_a(thr); + ut_a(foreign); + ut_a(pcur); + ut_a(mtr); + + trx = thr_get_trx(thr); + + /* Since we are going to delete or update a row, we have to invalidate + the MySQL query cache for table. A deadlock of threads is not possible + here because the caller of this function does not hold any latches with + the sync0sync.h rank above the kernel mutex. The query cache mutex has + a rank just above the kernel mutex. */ + + row_ins_invalidate_query_cache(thr, table->name); + + node = thr->run_node; + + if (node->is_delete && 0 == (foreign->type + & (DICT_FOREIGN_ON_DELETE_CASCADE + | DICT_FOREIGN_ON_DELETE_SET_NULL))) { + + row_ins_foreign_report_err("Trying to delete", + thr, foreign, + btr_pcur_get_rec(pcur), entry); + + return(DB_ROW_IS_REFERENCED); + } + + if (!node->is_delete && 0 == (foreign->type + & (DICT_FOREIGN_ON_UPDATE_CASCADE + | DICT_FOREIGN_ON_UPDATE_SET_NULL))) { + + /* This is an UPDATE */ + + row_ins_foreign_report_err("Trying to update", + thr, foreign, + btr_pcur_get_rec(pcur), entry); + + return(DB_ROW_IS_REFERENCED); + } + + if (node->cascade_node == NULL) { + /* Extend our query graph by creating a child to current + update node. The child is used in the cascade or set null + operation. */ + + node->cascade_heap = mem_heap_create(128); + node->cascade_node = row_create_update_node_for_mysql( + table, node->cascade_heap); + que_node_set_parent(node->cascade_node, node); + } + + /* Initialize cascade_node to do the operation we want. Note that we + use the SAME cascade node to do all foreign key operations of the + SQL DELETE: the table of the cascade node may change if there are + several child tables to the table where the delete is done! */ + + cascade = node->cascade_node; + + cascade->table = table; + + cascade->foreign = foreign; + + if (node->is_delete + && (foreign->type & DICT_FOREIGN_ON_DELETE_CASCADE)) { + cascade->is_delete = TRUE; + } else { + cascade->is_delete = FALSE; + + if (foreign->n_fields > cascade->update_n_fields) { + /* We have to make the update vector longer */ + + cascade->update = upd_create(foreign->n_fields, + node->cascade_heap); + cascade->update_n_fields = foreign->n_fields; + } + } + + /* We do not allow cyclic cascaded updating (DELETE is allowed, + but not UPDATE) of the same table, as this can lead to an infinite + cycle. Check that we are not updating the same table which is + already being modified in this cascade chain. We have to check + this also because the modification of the indexes of a 'parent' + table may still be incomplete, and we must avoid seeing the indexes + of the parent table in an inconsistent state! */ + + if (!cascade->is_delete + && row_ins_cascade_ancestor_updates_table(cascade, table)) { + + /* We do not know if this would break foreign key + constraints, but play safe and return an error */ + + err = DB_ROW_IS_REFERENCED; + + row_ins_foreign_report_err( + "Trying an update, possibly causing a cyclic" + " cascaded update\n" + "in the child table,", thr, foreign, + btr_pcur_get_rec(pcur), entry); + + goto nonstandard_exit_func; + } + + if (row_ins_cascade_n_ancestors(cascade) >= 15) { + err = DB_ROW_IS_REFERENCED; + + row_ins_foreign_report_err( + "Trying a too deep cascaded delete or update\n", + thr, foreign, btr_pcur_get_rec(pcur), entry); + + goto nonstandard_exit_func; + } + + index = btr_pcur_get_btr_cur(pcur)->index; + + ut_a(index == foreign->foreign_index); + + rec = btr_pcur_get_rec(pcur); + + if (dict_index_is_clust(index)) { + /* pcur is already positioned in the clustered index of + the child table */ + + clust_index = index; + clust_rec = rec; + clust_block = btr_pcur_get_block(pcur); + } else { + /* We have to look for the record in the clustered index + in the child table */ + + clust_index = dict_table_get_first_index(table); + + tmp_heap = mem_heap_create(256); + + ref = row_build_row_ref(ROW_COPY_POINTERS, index, rec, + tmp_heap); + btr_pcur_open_with_no_init(clust_index, ref, + PAGE_CUR_LE, BTR_SEARCH_LEAF, + cascade->pcur, 0, mtr); + + clust_rec = btr_pcur_get_rec(cascade->pcur); + clust_block = btr_pcur_get_block(cascade->pcur); + + if (!page_rec_is_user_rec(clust_rec) + || btr_pcur_get_low_match(cascade->pcur) + < dict_index_get_n_unique(clust_index)) { + + fputs("InnoDB: error in cascade of a foreign key op\n" + "InnoDB: ", stderr); + dict_index_name_print(stderr, trx, index); + + fputs("\n" + "InnoDB: record ", stderr); + rec_print(stderr, rec, index); + fputs("\n" + "InnoDB: clustered record ", stderr); + rec_print(stderr, clust_rec, clust_index); + fputs("\n" + "InnoDB: Submit a detailed bug report to" + " http://bugs.mysql.com\n", stderr); + + err = DB_SUCCESS; + + goto nonstandard_exit_func; + } + } + + /* Set an X-lock on the row to delete or update in the child table */ + + err = lock_table(0, table, LOCK_IX, thr); + + if (err == DB_SUCCESS) { + /* Here it suffices to use a LOCK_REC_NOT_GAP type lock; + we already have a normal shared lock on the appropriate + gap if the search criterion was not unique */ + + err = lock_clust_rec_read_check_and_lock_alt( + 0, clust_block, clust_rec, clust_index, + LOCK_X, LOCK_REC_NOT_GAP, thr); + } + + if (err != DB_SUCCESS) { + + goto nonstandard_exit_func; + } + + if (rec_get_deleted_flag(clust_rec, dict_table_is_comp(table))) { + /* This can happen if there is a circular reference of + rows such that cascading delete comes to delete a row + already in the process of being delete marked */ + err = DB_SUCCESS; + + goto nonstandard_exit_func; + } + + if ((node->is_delete + && (foreign->type & DICT_FOREIGN_ON_DELETE_SET_NULL)) + || (!node->is_delete + && (foreign->type & DICT_FOREIGN_ON_UPDATE_SET_NULL))) { + + /* Build the appropriate update vector which sets + foreign->n_fields first fields in rec to SQL NULL */ + + update = cascade->update; + + update->info_bits = 0; + update->n_fields = foreign->n_fields; + + for (i = 0; i < foreign->n_fields; i++) { + upd_field_t* ufield = &update->fields[i]; + + ufield->field_no = dict_table_get_nth_col_pos( + table, + dict_index_get_nth_col_no(index, i)); + ufield->orig_len = 0; + ufield->exp = NULL; + dfield_set_null(&ufield->new_val); + } + } + + if (!node->is_delete + && (foreign->type & DICT_FOREIGN_ON_UPDATE_CASCADE)) { + + /* Build the appropriate update vector which sets changing + foreign->n_fields first fields in rec to new values */ + + upd_vec_heap = mem_heap_create(256); + + n_to_update = row_ins_cascade_calc_update_vec(node, foreign, + upd_vec_heap); + if (n_to_update == ULINT_UNDEFINED) { + err = DB_ROW_IS_REFERENCED; + + row_ins_foreign_report_err( + "Trying a cascaded update where the" + " updated value in the child\n" + "table would not fit in the length" + " of the column, or the value would\n" + "be NULL and the column is" + " declared as not NULL in the child table,", + thr, foreign, btr_pcur_get_rec(pcur), entry); + + goto nonstandard_exit_func; + } + + if (cascade->update->n_fields == 0) { + + /* The update does not change any columns referred + to in this foreign key constraint: no need to do + anything */ + + err = DB_SUCCESS; + + goto nonstandard_exit_func; + } + } + + /* Store pcur position and initialize or store the cascade node + pcur stored position */ + + btr_pcur_store_position(pcur, mtr); + + if (index == clust_index) { + btr_pcur_copy_stored_position(cascade->pcur, pcur); + } else { + btr_pcur_store_position(cascade->pcur, mtr); + } + + mtr_commit(mtr); + + ut_a(cascade->pcur->rel_pos == BTR_PCUR_ON); + + cascade->state = UPD_NODE_UPDATE_CLUSTERED; + + err = row_update_cascade_for_mysql(thr, cascade, + foreign->foreign_table); + + if (foreign->foreign_table->n_foreign_key_checks_running == 0) { + fprintf(stderr, + "InnoDB: error: table %s has the counter 0" + " though there is\n" + "InnoDB: a FOREIGN KEY check running on it.\n", + foreign->foreign_table->name); + } + + /* Release the data dictionary latch for a while, so that we do not + starve other threads from doing CREATE TABLE etc. if we have a huge + cascaded operation running. The counter n_foreign_key_checks_running + will prevent other users from dropping or ALTERing the table when we + release the latch. */ + + row_mysql_unfreeze_data_dictionary(thr_get_trx(thr)); + row_mysql_freeze_data_dictionary(thr_get_trx(thr)); + + mtr_start(mtr); + + /* Restore pcur position */ + + btr_pcur_restore_position(BTR_SEARCH_LEAF, pcur, mtr); + + if (tmp_heap) { + mem_heap_free(tmp_heap); + } + + if (upd_vec_heap) { + mem_heap_free(upd_vec_heap); + } + + return(err); + +nonstandard_exit_func: + if (tmp_heap) { + mem_heap_free(tmp_heap); + } + + if (upd_vec_heap) { + mem_heap_free(upd_vec_heap); + } + + btr_pcur_store_position(pcur, mtr); + + mtr_commit(mtr); + mtr_start(mtr); + + btr_pcur_restore_position(BTR_SEARCH_LEAF, pcur, mtr); + + return(err); +} + +/************************************************************************* +Sets a shared lock on a record. Used in locking possible duplicate key +records and also in checking foreign key constraints. */ +static +ulint +row_ins_set_shared_rec_lock( +/*========================*/ + /* out: DB_SUCCESS or error code */ + ulint type, /* in: LOCK_ORDINARY, LOCK_GAP, or + LOCK_REC_NOT_GAP type lock */ + const buf_block_t* block, /* in: buffer block of rec */ + const rec_t* rec, /* in: record */ + dict_index_t* index, /* in: index */ + const ulint* offsets,/* in: rec_get_offsets(rec, index) */ + que_thr_t* thr) /* in: query thread */ +{ + ulint err; + + ut_ad(rec_offs_validate(rec, index, offsets)); + + if (dict_index_is_clust(index)) { + err = lock_clust_rec_read_check_and_lock( + 0, block, rec, index, offsets, LOCK_S, type, thr); + } else { + err = lock_sec_rec_read_check_and_lock( + 0, block, rec, index, offsets, LOCK_S, type, thr); + } + + return(err); +} + +#ifndef UNIV_HOTBACKUP +/************************************************************************* +Sets a exclusive lock on a record. Used in locking possible duplicate key +records */ +static +ulint +row_ins_set_exclusive_rec_lock( +/*===========================*/ + /* out: DB_SUCCESS or error code */ + ulint type, /* in: LOCK_ORDINARY, LOCK_GAP, or + LOCK_REC_NOT_GAP type lock */ + const buf_block_t* block, /* in: buffer block of rec */ + const rec_t* rec, /* in: record */ + dict_index_t* index, /* in: index */ + const ulint* offsets,/* in: rec_get_offsets(rec, index) */ + que_thr_t* thr) /* in: query thread */ +{ + ulint err; + + ut_ad(rec_offs_validate(rec, index, offsets)); + + if (dict_index_is_clust(index)) { + err = lock_clust_rec_read_check_and_lock( + 0, block, rec, index, offsets, LOCK_X, type, thr); + } else { + err = lock_sec_rec_read_check_and_lock( + 0, block, rec, index, offsets, LOCK_X, type, thr); + } + + return(err); +} +#endif /* !UNIV_HOTBACKUP */ + +/******************************************************************* +Checks if foreign key constraint fails for an index entry. Sets shared locks +which lock either the success or the failure of the constraint. NOTE that +the caller must have a shared latch on dict_operation_lock. */ +UNIV_INTERN +ulint +row_ins_check_foreign_constraint( +/*=============================*/ + /* out: DB_SUCCESS, + DB_NO_REFERENCED_ROW, + or DB_ROW_IS_REFERENCED */ + ibool check_ref,/* in: TRUE if we want to check that + the referenced table is ok, FALSE if we + want to to check the foreign key table */ + dict_foreign_t* foreign,/* in: foreign constraint; NOTE that the + tables mentioned in it must be in the + dictionary cache if they exist at all */ + dict_table_t* table, /* in: if check_ref is TRUE, then the foreign + table, else the referenced table */ + dtuple_t* entry, /* in: index entry for index */ + que_thr_t* thr) /* in: query thread */ +{ + upd_node_t* upd_node; + dict_table_t* check_table; + dict_index_t* check_index; + ulint n_fields_cmp; + btr_pcur_t pcur; + ibool moved; + int cmp; + ulint err; + ulint i; + mtr_t mtr; + trx_t* trx = thr_get_trx(thr); + mem_heap_t* heap = NULL; + ulint offsets_[REC_OFFS_NORMAL_SIZE]; + ulint* offsets = offsets_; + rec_offs_init(offsets_); + +run_again: +#ifdef UNIV_SYNC_DEBUG + ut_ad(rw_lock_own(&dict_operation_lock, RW_LOCK_SHARED)); +#endif /* UNIV_SYNC_DEBUG */ + + err = DB_SUCCESS; + + if (trx->check_foreigns == FALSE) { + /* The user has suppressed foreign key checks currently for + this session */ + goto exit_func; + } + + /* If any of the foreign key fields in entry is SQL NULL, we + suppress the foreign key check: this is compatible with Oracle, + for example */ + + for (i = 0; i < foreign->n_fields; i++) { + if (UNIV_SQL_NULL == dfield_get_len( + dtuple_get_nth_field(entry, i))) { + + goto exit_func; + } + } + + if (que_node_get_type(thr->run_node) == QUE_NODE_UPDATE) { + upd_node = thr->run_node; + + if (!(upd_node->is_delete) && upd_node->foreign == foreign) { + /* If a cascaded update is done as defined by a + foreign key constraint, do not check that + constraint for the child row. In ON UPDATE CASCADE + the update of the parent row is only half done when + we come here: if we would check the constraint here + for the child row it would fail. + + A QUESTION remains: if in the child table there are + several constraints which refer to the same parent + table, we should merge all updates to the child as + one update? And the updates can be contradictory! + Currently we just perform the update associated + with each foreign key constraint, one after + another, and the user has problems predicting in + which order they are performed. */ + + goto exit_func; + } + } + + if (check_ref) { + check_table = foreign->referenced_table; + check_index = foreign->referenced_index; + } else { + check_table = foreign->foreign_table; + check_index = foreign->foreign_index; + } + + if (check_table == NULL || check_table->ibd_file_missing) { + if (check_ref) { + FILE* ef = dict_foreign_err_file; + + row_ins_set_detailed(trx, foreign); + + mutex_enter(&dict_foreign_err_mutex); + rewind(ef); + ut_print_timestamp(ef); + fputs(" Transaction:\n", ef); + trx_print(ef, trx, 600); + fputs("Foreign key constraint fails for table ", ef); + ut_print_name(ef, trx, TRUE, + foreign->foreign_table_name); + fputs(":\n", ef); + dict_print_info_on_foreign_key_in_create_format( + ef, trx, foreign, TRUE); + fputs("\nTrying to add to index ", ef); + ut_print_name(ef, trx, FALSE, + foreign->foreign_index->name); + fputs(" tuple:\n", ef); + dtuple_print(ef, entry); + fputs("\nBut the parent table ", ef); + ut_print_name(ef, trx, TRUE, + foreign->referenced_table_name); + fputs("\nor its .ibd file does" + " not currently exist!\n", ef); + mutex_exit(&dict_foreign_err_mutex); + + err = DB_NO_REFERENCED_ROW; + } + + goto exit_func; + } + + ut_a(check_table); + ut_a(check_index); + + if (check_table != table) { + /* We already have a LOCK_IX on table, but not necessarily + on check_table */ + + err = lock_table(0, check_table, LOCK_IS, thr); + + if (err != DB_SUCCESS) { + + goto do_possible_lock_wait; + } + } + + mtr_start(&mtr); + + /* Store old value on n_fields_cmp */ + + n_fields_cmp = dtuple_get_n_fields_cmp(entry); + + dtuple_set_n_fields_cmp(entry, foreign->n_fields); + + btr_pcur_open(check_index, entry, PAGE_CUR_GE, + BTR_SEARCH_LEAF, &pcur, &mtr); + + /* Scan index records and check if there is a matching record */ + + for (;;) { + const rec_t* rec = btr_pcur_get_rec(&pcur); + const buf_block_t* block = btr_pcur_get_block(&pcur); + + if (page_rec_is_infimum(rec)) { + + goto next_rec; + } + + offsets = rec_get_offsets(rec, check_index, + offsets, ULINT_UNDEFINED, &heap); + + if (page_rec_is_supremum(rec)) { + + err = row_ins_set_shared_rec_lock(LOCK_ORDINARY, block, + rec, check_index, + offsets, thr); + if (err != DB_SUCCESS) { + + break; + } + + goto next_rec; + } + + cmp = cmp_dtuple_rec(entry, rec, offsets); + + if (cmp == 0) { + if (rec_get_deleted_flag(rec, + rec_offs_comp(offsets))) { + err = row_ins_set_shared_rec_lock( + LOCK_ORDINARY, block, + rec, check_index, offsets, thr); + if (err != DB_SUCCESS) { + + break; + } + } else { + /* Found a matching record. Lock only + a record because we can allow inserts + into gaps */ + + err = row_ins_set_shared_rec_lock( + LOCK_REC_NOT_GAP, block, + rec, check_index, offsets, thr); + + if (err != DB_SUCCESS) { + + break; + } + + if (check_ref) { + err = DB_SUCCESS; + + break; + } else if (foreign->type != 0) { + /* There is an ON UPDATE or ON DELETE + condition: check them in a separate + function */ + + err = row_ins_foreign_check_on_constraint( + thr, foreign, &pcur, entry, + &mtr); + if (err != DB_SUCCESS) { + /* Since reporting a plain + "duplicate key" error + message to the user in + cases where a long CASCADE + operation would lead to a + duplicate key in some + other table is very + confusing, map duplicate + key errors resulting from + FK constraints to a + separate error code. */ + + if (err == DB_DUPLICATE_KEY) { + err = DB_FOREIGN_DUPLICATE_KEY; + } + + break; + } + + /* row_ins_foreign_check_on_constraint + may have repositioned pcur on a + different block */ + block = btr_pcur_get_block(&pcur); + } else { + row_ins_foreign_report_err( + "Trying to delete or update", + thr, foreign, rec, entry); + + err = DB_ROW_IS_REFERENCED; + break; + } + } + } + + if (cmp < 0) { + err = row_ins_set_shared_rec_lock( + LOCK_GAP, block, + rec, check_index, offsets, thr); + if (err != DB_SUCCESS) { + + break; + } + + if (check_ref) { + err = DB_NO_REFERENCED_ROW; + row_ins_foreign_report_add_err( + trx, foreign, rec, entry); + } else { + err = DB_SUCCESS; + } + + break; + } + + ut_a(cmp == 0); +next_rec: + moved = btr_pcur_move_to_next(&pcur, &mtr); + + if (!moved) { + if (check_ref) { + rec = btr_pcur_get_rec(&pcur); + row_ins_foreign_report_add_err( + trx, foreign, rec, entry); + err = DB_NO_REFERENCED_ROW; + } else { + err = DB_SUCCESS; + } + + break; + } + } + + btr_pcur_close(&pcur); + + mtr_commit(&mtr); + + /* Restore old value */ + dtuple_set_n_fields_cmp(entry, n_fields_cmp); + +do_possible_lock_wait: + if (err == DB_LOCK_WAIT) { + trx->error_state = err; + + que_thr_stop_for_mysql(thr); + + srv_suspend_mysql_thread(thr); + + if (trx->error_state == DB_SUCCESS) { + + goto run_again; + } + + err = trx->error_state; + } + +exit_func: + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } + return(err); +} + +/******************************************************************* +Checks if foreign key constraints fail for an index entry. If index +is not mentioned in any constraint, this function does nothing, +Otherwise does searches to the indexes of referenced tables and +sets shared locks which lock either the success or the failure of +a constraint. */ +static +ulint +row_ins_check_foreign_constraints( +/*==============================*/ + /* out: DB_SUCCESS or error code */ + dict_table_t* table, /* in: table */ + dict_index_t* index, /* in: index */ + dtuple_t* entry, /* in: index entry for index */ + que_thr_t* thr) /* in: query thread */ +{ + dict_foreign_t* foreign; + ulint err; + trx_t* trx; + ibool got_s_lock = FALSE; + + trx = thr_get_trx(thr); + + foreign = UT_LIST_GET_FIRST(table->foreign_list); + + while (foreign) { + if (foreign->foreign_index == index) { + + if (foreign->referenced_table == NULL) { + dict_table_get(foreign->referenced_table_name, + FALSE); + } + + if (0 == trx->dict_operation_lock_mode) { + got_s_lock = TRUE; + + row_mysql_freeze_data_dictionary(trx); + } + + if (foreign->referenced_table) { + mutex_enter(&(dict_sys->mutex)); + + (foreign->referenced_table + ->n_foreign_key_checks_running)++; + + mutex_exit(&(dict_sys->mutex)); + } + + /* NOTE that if the thread ends up waiting for a lock + we will release dict_operation_lock temporarily! + But the counter on the table protects the referenced + table from being dropped while the check is running. */ + + err = row_ins_check_foreign_constraint( + TRUE, foreign, table, entry, thr); + + if (foreign->referenced_table) { + mutex_enter(&(dict_sys->mutex)); + + ut_a(foreign->referenced_table + ->n_foreign_key_checks_running > 0); + (foreign->referenced_table + ->n_foreign_key_checks_running)--; + + mutex_exit(&(dict_sys->mutex)); + } + + if (got_s_lock) { + row_mysql_unfreeze_data_dictionary(trx); + } + + if (err != DB_SUCCESS) { + return(err); + } + } + + foreign = UT_LIST_GET_NEXT(foreign_list, foreign); + } + + return(DB_SUCCESS); +} + +#ifndef UNIV_HOTBACKUP +/******************************************************************* +Checks if a unique key violation to rec would occur at the index entry +insert. */ +static +ibool +row_ins_dupl_error_with_rec( +/*========================*/ + /* out: TRUE if error */ + const rec_t* rec, /* in: user record; NOTE that we assume + that the caller already has a record lock on + the record! */ + const dtuple_t* entry, /* in: entry to insert */ + dict_index_t* index, /* in: index */ + const ulint* offsets)/* in: rec_get_offsets(rec, index) */ +{ + ulint matched_fields; + ulint matched_bytes; + ulint n_unique; + ulint i; + + ut_ad(rec_offs_validate(rec, index, offsets)); + + n_unique = dict_index_get_n_unique(index); + + matched_fields = 0; + matched_bytes = 0; + + cmp_dtuple_rec_with_match(entry, rec, offsets, + &matched_fields, &matched_bytes); + + if (matched_fields < n_unique) { + + return(FALSE); + } + + /* In a unique secondary index we allow equal key values if they + contain SQL NULLs */ + + if (!dict_index_is_clust(index)) { + + for (i = 0; i < n_unique; i++) { + if (UNIV_SQL_NULL == dfield_get_len( + dtuple_get_nth_field(entry, i))) { + + return(FALSE); + } + } + } + + return(!rec_get_deleted_flag(rec, rec_offs_comp(offsets))); +} +#endif /* !UNIV_HOTBACKUP */ + +/******************************************************************* +Scans a unique non-clustered index at a given index entry to determine +whether a uniqueness violation has occurred for the key value of the entry. +Set shared locks on possible duplicate records. */ +static +ulint +row_ins_scan_sec_index_for_duplicate( +/*=================================*/ + /* out: DB_SUCCESS, DB_DUPLICATE_KEY, or + DB_LOCK_WAIT */ + dict_index_t* index, /* in: non-clustered unique index */ + dtuple_t* entry, /* in: index entry */ + que_thr_t* thr) /* in: query thread */ +{ +#ifndef UNIV_HOTBACKUP + ulint n_unique; + ulint i; + int cmp; + ulint n_fields_cmp; + btr_pcur_t pcur; + ulint err = DB_SUCCESS; + unsigned allow_duplicates; + mtr_t mtr; + mem_heap_t* heap = NULL; + ulint offsets_[REC_OFFS_NORMAL_SIZE]; + ulint* offsets = offsets_; + rec_offs_init(offsets_); + + n_unique = dict_index_get_n_unique(index); + + /* If the secondary index is unique, but one of the fields in the + n_unique first fields is NULL, a unique key violation cannot occur, + since we define NULL != NULL in this case */ + + for (i = 0; i < n_unique; i++) { + if (UNIV_SQL_NULL == dfield_get_len( + dtuple_get_nth_field(entry, i))) { + + return(DB_SUCCESS); + } + } + + mtr_start(&mtr); + + /* Store old value on n_fields_cmp */ + + n_fields_cmp = dtuple_get_n_fields_cmp(entry); + + dtuple_set_n_fields_cmp(entry, dict_index_get_n_unique(index)); + + btr_pcur_open(index, entry, PAGE_CUR_GE, BTR_SEARCH_LEAF, &pcur, &mtr); + + allow_duplicates = thr_get_trx(thr)->duplicates & TRX_DUP_IGNORE; + + /* Scan index records and check if there is a duplicate */ + + do { + const rec_t* rec = btr_pcur_get_rec(&pcur); + const buf_block_t* block = btr_pcur_get_block(&pcur); + + if (page_rec_is_infimum(rec)) { + + continue; + } + + offsets = rec_get_offsets(rec, index, offsets, + ULINT_UNDEFINED, &heap); + + if (allow_duplicates) { + + /* If the SQL-query will update or replace + duplicate key we will take X-lock for + duplicates ( REPLACE, LOAD DATAFILE REPLACE, + INSERT ON DUPLICATE KEY UPDATE). */ + + err = row_ins_set_exclusive_rec_lock( + LOCK_ORDINARY, block, + rec, index, offsets, thr); + } else { + + err = row_ins_set_shared_rec_lock( + LOCK_ORDINARY, block, + rec, index, offsets, thr); + } + + if (err != DB_SUCCESS) { + + break; + } + + if (page_rec_is_supremum(rec)) { + + continue; + } + + cmp = cmp_dtuple_rec(entry, rec, offsets); + + if (cmp == 0) { + if (row_ins_dupl_error_with_rec(rec, entry, + index, offsets)) { + err = DB_DUPLICATE_KEY; + + thr_get_trx(thr)->error_info = index; + + break; + } + } + + if (cmp < 0) { + break; + } + + ut_a(cmp == 0); + } while (btr_pcur_move_to_next(&pcur, &mtr)); + + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } + mtr_commit(&mtr); + + /* Restore old value */ + dtuple_set_n_fields_cmp(entry, n_fields_cmp); + + return(err); +#else /* UNIV_HOTBACKUP */ + /* This function depends on MySQL code that is not included in + InnoDB Hot Backup builds. Besides, this function should never + be called in InnoDB Hot Backup. */ + ut_error; + return(DB_FAIL); +#endif /* UNIV_HOTBACKUP */ +} + +/******************************************************************* +Checks if a unique key violation error would occur at an index entry +insert. Sets shared locks on possible duplicate records. Works only +for a clustered index! */ +static +ulint +row_ins_duplicate_error_in_clust( +/*=============================*/ + /* out: DB_SUCCESS if no error, + DB_DUPLICATE_KEY if error, DB_LOCK_WAIT if we + have to wait for a lock on a possible + duplicate record */ + btr_cur_t* cursor, /* in: B-tree cursor */ + dtuple_t* entry, /* in: entry to insert */ + que_thr_t* thr, /* in: query thread */ + mtr_t* mtr) /* in: mtr */ +{ +#ifndef UNIV_HOTBACKUP + ulint err; + rec_t* rec; + ulint n_unique; + trx_t* trx = thr_get_trx(thr); + mem_heap_t*heap = NULL; + ulint offsets_[REC_OFFS_NORMAL_SIZE]; + ulint* offsets = offsets_; + rec_offs_init(offsets_); + + UT_NOT_USED(mtr); + + ut_a(dict_index_is_clust(cursor->index)); + ut_ad(dict_index_is_unique(cursor->index)); + + /* NOTE: For unique non-clustered indexes there may be any number + of delete marked records with the same value for the non-clustered + index key (remember multiversioning), and which differ only in + the row refererence part of the index record, containing the + clustered index key fields. For such a secondary index record, + to avoid race condition, we must FIRST do the insertion and after + that check that the uniqueness condition is not breached! */ + + /* NOTE: A problem is that in the B-tree node pointers on an + upper level may match more to the entry than the actual existing + user records on the leaf level. So, even if low_match would suggest + that a duplicate key violation may occur, this may not be the case. */ + + n_unique = dict_index_get_n_unique(cursor->index); + + if (cursor->low_match >= n_unique) { + + rec = btr_cur_get_rec(cursor); + + if (!page_rec_is_infimum(rec)) { + offsets = rec_get_offsets(rec, cursor->index, offsets, + ULINT_UNDEFINED, &heap); + + /* We set a lock on the possible duplicate: this + is needed in logical logging of MySQL to make + sure that in roll-forward we get the same duplicate + errors as in original execution */ + + if (trx->duplicates & TRX_DUP_IGNORE) { + + /* If the SQL-query will update or replace + duplicate key we will take X-lock for + duplicates ( REPLACE, LOAD DATAFILE REPLACE, + INSERT ON DUPLICATE KEY UPDATE). */ + + err = row_ins_set_exclusive_rec_lock( + LOCK_REC_NOT_GAP, + btr_cur_get_block(cursor), + rec, cursor->index, offsets, thr); + } else { + + err = row_ins_set_shared_rec_lock( + LOCK_REC_NOT_GAP, + btr_cur_get_block(cursor), rec, + cursor->index, offsets, thr); + } + + if (err != DB_SUCCESS) { + goto func_exit; + } + + if (row_ins_dupl_error_with_rec( + rec, entry, cursor->index, offsets)) { + trx->error_info = cursor->index; + err = DB_DUPLICATE_KEY; + goto func_exit; + } + } + } + + if (cursor->up_match >= n_unique) { + + rec = page_rec_get_next(btr_cur_get_rec(cursor)); + + if (!page_rec_is_supremum(rec)) { + offsets = rec_get_offsets(rec, cursor->index, offsets, + ULINT_UNDEFINED, &heap); + + if (trx->duplicates & TRX_DUP_IGNORE) { + + /* If the SQL-query will update or replace + duplicate key we will take X-lock for + duplicates ( REPLACE, LOAD DATAFILE REPLACE, + INSERT ON DUPLICATE KEY UPDATE). */ + + err = row_ins_set_exclusive_rec_lock( + LOCK_REC_NOT_GAP, + btr_cur_get_block(cursor), + rec, cursor->index, offsets, thr); + } else { + + err = row_ins_set_shared_rec_lock( + LOCK_REC_NOT_GAP, + btr_cur_get_block(cursor), + rec, cursor->index, offsets, thr); + } + + if (err != DB_SUCCESS) { + goto func_exit; + } + + if (row_ins_dupl_error_with_rec( + rec, entry, cursor->index, offsets)) { + trx->error_info = cursor->index; + err = DB_DUPLICATE_KEY; + goto func_exit; + } + } + + ut_a(!dict_index_is_clust(cursor->index)); + /* This should never happen */ + } + + err = DB_SUCCESS; +func_exit: + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } + return(err); +#else /* UNIV_HOTBACKUP */ + /* This function depends on MySQL code that is not included in + InnoDB Hot Backup builds. Besides, this function should never + be called in InnoDB Hot Backup. */ + ut_error; + return(DB_FAIL); +#endif /* UNIV_HOTBACKUP */ +} + +/******************************************************************* +Checks if an index entry has long enough common prefix with an existing +record so that the intended insert of the entry must be changed to a modify of +the existing record. In the case of a clustered index, the prefix must be +n_unique fields long, and in the case of a secondary index, all fields must be +equal. */ +UNIV_INLINE +ulint +row_ins_must_modify( +/*================*/ + /* out: 0 if no update, ROW_INS_PREV if + previous should be updated; currently we + do the search so that only the low_match + record can match enough to the search tuple, + not the next record */ + btr_cur_t* cursor) /* in: B-tree cursor */ +{ + ulint enough_match; + rec_t* rec; + + /* NOTE: (compare to the note in row_ins_duplicate_error) Because node + pointers on upper levels of the B-tree may match more to entry than + to actual user records on the leaf level, we have to check if the + candidate record is actually a user record. In a clustered index + node pointers contain index->n_unique first fields, and in the case + of a secondary index, all fields of the index. */ + + enough_match = dict_index_get_n_unique_in_tree(cursor->index); + + if (cursor->low_match >= enough_match) { + + rec = btr_cur_get_rec(cursor); + + if (!page_rec_is_infimum(rec)) { + + return(ROW_INS_PREV); + } + } + + return(0); +} + +/******************************************************************* +Tries to insert an index entry to an index. If the index is clustered +and a record with the same unique key is found, the other record is +necessarily marked deleted by a committed transaction, or a unique key +violation error occurs. The delete marked record is then updated to an +existing record, and we must write an undo log record on the delete +marked record. If the index is secondary, and a record with exactly the +same fields is found, the other record is necessarily marked deleted. +It is then unmarked. Otherwise, the entry is just inserted to the index. */ +static +ulint +row_ins_index_entry_low( +/*====================*/ + /* out: DB_SUCCESS, DB_LOCK_WAIT, DB_FAIL + if pessimistic retry needed, or error code */ + ulint mode, /* in: BTR_MODIFY_LEAF or BTR_MODIFY_TREE, + depending on whether we wish optimistic or + pessimistic descent down the index tree */ + dict_index_t* index, /* in: index */ + dtuple_t* entry, /* in: index entry to insert */ + ulint n_ext, /* in: number of externally stored columns */ + que_thr_t* thr) /* in: query thread */ +{ + btr_cur_t cursor; + ulint ignore_sec_unique = 0; + ulint modify = 0; /* remove warning */ + rec_t* insert_rec; + rec_t* rec; + ulint err; + ulint n_unique; + big_rec_t* big_rec = NULL; + mtr_t mtr; + mem_heap_t* heap = NULL; + + log_free_check(); + + mtr_start(&mtr); + + cursor.thr = thr; + + /* Note that we use PAGE_CUR_LE as the search mode, because then + the function will return in both low_match and up_match of the + cursor sensible values */ + + if (!(thr_get_trx(thr)->check_unique_secondary)) { + ignore_sec_unique = BTR_IGNORE_SEC_UNIQUE; + } + + btr_cur_search_to_nth_level(index, 0, entry, PAGE_CUR_LE, + mode | BTR_INSERT | ignore_sec_unique, + &cursor, 0, &mtr); + + if (cursor.flag == BTR_CUR_INSERT_TO_IBUF) { + /* The insertion was made to the insert buffer already during + the search: we are done */ + + err = DB_SUCCESS; + + goto function_exit; + } + +#ifdef UNIV_DEBUG + { + page_t* page = btr_cur_get_page(&cursor); + rec_t* first_rec = page_rec_get_next( + page_get_infimum_rec(page)); + + ut_ad(page_rec_is_supremum(first_rec) + || rec_get_n_fields(first_rec, index) + == dtuple_get_n_fields(entry)); + } +#endif + + n_unique = dict_index_get_n_unique(index); + + if (dict_index_is_unique(index) && (cursor.up_match >= n_unique + || cursor.low_match >= n_unique)) { + + if (dict_index_is_clust(index)) { + /* Note that the following may return also + DB_LOCK_WAIT */ + + err = row_ins_duplicate_error_in_clust( + &cursor, entry, thr, &mtr); + if (err != DB_SUCCESS) { + + goto function_exit; + } + } else { + mtr_commit(&mtr); + err = row_ins_scan_sec_index_for_duplicate( + index, entry, thr); + mtr_start(&mtr); + + if (err != DB_SUCCESS) { + + goto function_exit; + } + + /* We did not find a duplicate and we have now + locked with s-locks the necessary records to + prevent any insertion of a duplicate by another + transaction. Let us now reposition the cursor and + continue the insertion. */ + + btr_cur_search_to_nth_level(index, 0, entry, + PAGE_CUR_LE, + mode | BTR_INSERT, + &cursor, 0, &mtr); + } + } + + modify = row_ins_must_modify(&cursor); + + if (modify != 0) { + /* There is already an index entry with a long enough common + prefix, we must convert the insert into a modify of an + existing record */ + + if (modify == ROW_INS_NEXT) { + rec = page_rec_get_next(btr_cur_get_rec(&cursor)); + + btr_cur_position(index, rec, + btr_cur_get_block(&cursor),&cursor); + } + + if (dict_index_is_clust(index)) { + err = row_ins_clust_index_entry_by_modify( + mode, &cursor, &heap, &big_rec, entry, + thr, &mtr); + } else { + ut_ad(!n_ext); + err = row_ins_sec_index_entry_by_modify( + mode, &cursor, entry, thr, &mtr); + } + } else { + if (mode == BTR_MODIFY_LEAF) { + err = btr_cur_optimistic_insert( + 0, &cursor, entry, &insert_rec, &big_rec, + n_ext, thr, &mtr); + } else { + ut_a(mode == BTR_MODIFY_TREE); + if (buf_LRU_buf_pool_running_out()) { + + err = DB_LOCK_TABLE_FULL; + + goto function_exit; + } + err = btr_cur_pessimistic_insert( + 0, &cursor, entry, &insert_rec, &big_rec, + n_ext, thr, &mtr); + } + } + +function_exit: + mtr_commit(&mtr); + + if (UNIV_LIKELY_NULL(big_rec)) { + rec_t* rec; + ulint* offsets; + mtr_start(&mtr); + + btr_cur_search_to_nth_level(index, 0, entry, PAGE_CUR_LE, + BTR_MODIFY_TREE, &cursor, 0, &mtr); + rec = btr_cur_get_rec(&cursor); + offsets = rec_get_offsets(rec, index, NULL, + ULINT_UNDEFINED, &heap); + + err = btr_store_big_rec_extern_fields( + index, btr_cur_get_block(&cursor), + rec, offsets, big_rec, &mtr); + + if (modify) { + dtuple_big_rec_free(big_rec); + } else { + dtuple_convert_back_big_rec(index, entry, big_rec); + } + + mtr_commit(&mtr); + } + + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } + return(err); +} + +/******************************************************************* +Inserts an index entry to index. Tries first optimistic, then pessimistic +descent down the tree. If the entry matches enough to a delete marked record, +performs the insert by updating or delete unmarking the delete marked +record. */ +UNIV_INTERN +ulint +row_ins_index_entry( +/*================*/ + /* out: DB_SUCCESS, DB_LOCK_WAIT, + DB_DUPLICATE_KEY, or some other error code */ + dict_index_t* index, /* in: index */ + dtuple_t* entry, /* in: index entry to insert */ + ulint n_ext, /* in: number of externally stored columns */ + ibool foreign,/* in: TRUE=check foreign key constraints */ + que_thr_t* thr) /* in: query thread */ +{ + ulint err; + + if (foreign && UT_LIST_GET_FIRST(index->table->foreign_list)) { + err = row_ins_check_foreign_constraints(index->table, index, + entry, thr); + if (err != DB_SUCCESS) { + + return(err); + } + } + + /* Try first optimistic descent to the B-tree */ + + err = row_ins_index_entry_low(BTR_MODIFY_LEAF, index, entry, + n_ext, thr); + if (err != DB_FAIL) { + + return(err); + } + + /* Try then pessimistic descent to the B-tree */ + + err = row_ins_index_entry_low(BTR_MODIFY_TREE, index, entry, + n_ext, thr); + return(err); +} + +/*************************************************************** +Sets the values of the dtuple fields in entry from the values of appropriate +columns in row. */ +static +void +row_ins_index_entry_set_vals( +/*=========================*/ + dict_index_t* index, /* in: index */ + dtuple_t* entry, /* in: index entry to make */ + const dtuple_t* row) /* in: row */ +{ + ulint n_fields; + ulint i; + + ut_ad(entry && row); + + n_fields = dtuple_get_n_fields(entry); + + for (i = 0; i < n_fields; i++) { + dict_field_t* ind_field; + dfield_t* field; + const dfield_t* row_field; + ulint len; + + field = dtuple_get_nth_field(entry, i); + ind_field = dict_index_get_nth_field(index, i); + row_field = dtuple_get_nth_field(row, ind_field->col->ind); + len = dfield_get_len(row_field); + + /* Check column prefix indexes */ + if (ind_field->prefix_len > 0 + && dfield_get_len(row_field) != UNIV_SQL_NULL) { + + const dict_col_t* col + = dict_field_get_col(ind_field); + + len = dtype_get_at_most_n_mbchars( + col->prtype, col->mbminlen, col->mbmaxlen, + ind_field->prefix_len, + len, dfield_get_data(row_field)); + + ut_ad(!dfield_is_ext(row_field)); + } + + dfield_set_data(field, dfield_get_data(row_field), len); + if (dfield_is_ext(row_field)) { + ut_ad(dict_index_is_clust(index)); + dfield_set_ext(field); + } + } +} + +/*************************************************************** +Inserts a single index entry to the table. */ +static +ulint +row_ins_index_entry_step( +/*=====================*/ + /* out: DB_SUCCESS if operation successfully + completed, else error code or DB_LOCK_WAIT */ + ins_node_t* node, /* in: row insert node */ + que_thr_t* thr) /* in: query thread */ +{ + ulint err; + + ut_ad(dtuple_check_typed(node->row)); + + row_ins_index_entry_set_vals(node->index, node->entry, node->row); + + ut_ad(dtuple_check_typed(node->entry)); + + err = row_ins_index_entry(node->index, node->entry, 0, TRUE, thr); + + return(err); +} + +/*************************************************************** +Allocates a row id for row and inits the node->index field. */ +UNIV_INLINE +void +row_ins_alloc_row_id_step( +/*======================*/ + ins_node_t* node) /* in: row insert node */ +{ + dulint row_id; + + ut_ad(node->state == INS_NODE_ALLOC_ROW_ID); + + if (dict_index_is_unique(dict_table_get_first_index(node->table))) { + + /* No row id is stored if the clustered index is unique */ + + return; + } + + /* Fill in row id value to row */ + + row_id = dict_sys_get_new_row_id(); + + dict_sys_write_row_id(node->row_id_buf, row_id); +} + +/*************************************************************** +Gets a row to insert from the values list. */ +UNIV_INLINE +void +row_ins_get_row_from_values( +/*========================*/ + ins_node_t* node) /* in: row insert node */ +{ + que_node_t* list_node; + dfield_t* dfield; + dtuple_t* row; + ulint i; + + /* The field values are copied in the buffers of the select node and + it is safe to use them until we fetch from select again: therefore + we can just copy the pointers */ + + row = node->row; + + i = 0; + list_node = node->values_list; + + while (list_node) { + eval_exp(list_node); + + dfield = dtuple_get_nth_field(row, i); + dfield_copy_data(dfield, que_node_get_val(list_node)); + + i++; + list_node = que_node_get_next(list_node); + } +} + +/*************************************************************** +Gets a row to insert from the select list. */ +UNIV_INLINE +void +row_ins_get_row_from_select( +/*========================*/ + ins_node_t* node) /* in: row insert node */ +{ + que_node_t* list_node; + dfield_t* dfield; + dtuple_t* row; + ulint i; + + /* The field values are copied in the buffers of the select node and + it is safe to use them until we fetch from select again: therefore + we can just copy the pointers */ + + row = node->row; + + i = 0; + list_node = node->select->select_list; + + while (list_node) { + dfield = dtuple_get_nth_field(row, i); + dfield_copy_data(dfield, que_node_get_val(list_node)); + + i++; + list_node = que_node_get_next(list_node); + } +} + +/*************************************************************** +Inserts a row to a table. */ +static +ulint +row_ins( +/*====*/ + /* out: DB_SUCCESS if operation successfully + completed, else error code or DB_LOCK_WAIT */ + ins_node_t* node, /* in: row insert node */ + que_thr_t* thr) /* in: query thread */ +{ + ulint err; + + ut_ad(node && thr); + + if (node->state == INS_NODE_ALLOC_ROW_ID) { + + row_ins_alloc_row_id_step(node); + + node->index = dict_table_get_first_index(node->table); + node->entry = UT_LIST_GET_FIRST(node->entry_list); + + if (node->ins_type == INS_SEARCHED) { + + row_ins_get_row_from_select(node); + + } else if (node->ins_type == INS_VALUES) { + + row_ins_get_row_from_values(node); + } + + node->state = INS_NODE_INSERT_ENTRIES; + } + + ut_ad(node->state == INS_NODE_INSERT_ENTRIES); + + while (node->index != NULL) { + err = row_ins_index_entry_step(node, thr); + + if (err != DB_SUCCESS) { + + return(err); + } + + node->index = dict_table_get_next_index(node->index); + node->entry = UT_LIST_GET_NEXT(tuple_list, node->entry); + } + + ut_ad(node->entry == NULL); + + node->state = INS_NODE_ALLOC_ROW_ID; + + return(DB_SUCCESS); +} + +/*************************************************************** +Inserts a row to a table. This is a high-level function used in SQL execution +graphs. */ +UNIV_INTERN +que_thr_t* +row_ins_step( +/*=========*/ + /* out: query thread to run next or NULL */ + que_thr_t* thr) /* in: query thread */ +{ + ins_node_t* node; + que_node_t* parent; + sel_node_t* sel_node; + trx_t* trx; + ulint err; + + ut_ad(thr); + + trx = thr_get_trx(thr); + + trx_start_if_not_started(trx); + + node = thr->run_node; + + ut_ad(que_node_get_type(node) == QUE_NODE_INSERT); + + parent = que_node_get_parent(node); + sel_node = node->select; + + if (thr->prev_node == parent) { + node->state = INS_NODE_SET_IX_LOCK; + } + + /* If this is the first time this node is executed (or when + execution resumes after wait for the table IX lock), set an + IX lock on the table and reset the possible select node. MySQL's + partitioned table code may also call an insert within the same + SQL statement AFTER it has used this table handle to do a search. + This happens, for example, when a row update moves it to another + partition. In that case, we have already set the IX lock on the + table during the search operation, and there is no need to set + it again here. But we must write trx->id to node->trx_id_buf. */ + + trx_write_trx_id(node->trx_id_buf, trx->id); + + if (node->state == INS_NODE_SET_IX_LOCK) { + + /* It may be that the current session has not yet started + its transaction, or it has been committed: */ + + if (UT_DULINT_EQ(trx->id, node->trx_id)) { + /* No need to do IX-locking */ + + goto same_trx; + } + + err = lock_table(0, node->table, LOCK_IX, thr); + + if (err != DB_SUCCESS) { + + goto error_handling; + } + + node->trx_id = trx->id; +same_trx: + node->state = INS_NODE_ALLOC_ROW_ID; + + if (node->ins_type == INS_SEARCHED) { + /* Reset the cursor */ + sel_node->state = SEL_NODE_OPEN; + + /* Fetch a row to insert */ + + thr->run_node = sel_node; + + return(thr); + } + } + + if ((node->ins_type == INS_SEARCHED) + && (sel_node->state != SEL_NODE_FETCH)) { + + ut_ad(sel_node->state == SEL_NODE_NO_MORE_ROWS); + + /* No more rows to insert */ + thr->run_node = parent; + + return(thr); + } + + /* DO THE CHECKS OF THE CONSISTENCY CONSTRAINTS HERE */ + + err = row_ins(node, thr); + +error_handling: + trx->error_state = err; + + if (err != DB_SUCCESS) { + /* err == DB_LOCK_WAIT or SQL error detected */ + return(NULL); + } + + /* DO THE TRIGGER ACTIONS HERE */ + + if (node->ins_type == INS_SEARCHED) { + /* Fetch a row to insert */ + + thr->run_node = sel_node; + } else { + thr->run_node = que_node_get_parent(node); + } + + return(thr); +} === added file 'storage/xtradb/row/row0merge.c' --- a/storage/xtradb/row/row0merge.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/row/row0merge.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,2358 @@ +/***************************************************************************** + +Copyright (c) 2005, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +New index creation routines using a merge sort + +Created 12/4/2005 Jan Lindstrom +Completed by Sunny Bains and Marko Makela +*******************************************************/ + +#include "row0merge.h" +#include "row0ext.h" +#include "row0row.h" +#include "row0upd.h" +#include "row0ins.h" +#include "row0sel.h" +#include "dict0dict.h" +#include "dict0mem.h" +#include "dict0boot.h" +#include "dict0crea.h" +#include "dict0load.h" +#include "btr0btr.h" +#include "mach0data.h" +#include "trx0rseg.h" +#include "trx0trx.h" +#include "trx0roll.h" +#include "trx0undo.h" +#include "trx0purge.h" +#include "trx0rec.h" +#include "que0que.h" +#include "rem0cmp.h" +#include "read0read.h" +#include "os0file.h" +#include "lock0lock.h" +#include "data0data.h" +#include "data0type.h" +#include "que0que.h" +#include "pars0pars.h" +#include "mem0mem.h" +#include "log0log.h" +#include "ut0sort.h" +#include "handler0alter.h" + +#ifdef UNIV_DEBUG +/* Set these in order ot enable debug printout. */ +static ibool row_merge_print_cmp; +static ibool row_merge_print_read; +static ibool row_merge_print_write; +#endif /* UNIV_DEBUG */ + +/* Block size for I/O operations in merge sort. The minimum is +UNIV_PAGE_SIZE, or page_get_free_space_of_empty() rounded to a power of 2. + +When not creating a PRIMARY KEY that contains column prefixes, this +can be set as small as UNIV_PAGE_SIZE / 2. See the comment above +ut_ad(data_size < sizeof(row_merge_block_t)). */ + +typedef byte row_merge_block_t[1048576]; + +/* Secondary buffer for I/O operations of merge records. This buffer +is used for writing or reading a record that spans two row_merge_block_t. +Thus, it must be able to hold one merge record, whose maximum size is +the same as the minimum size of row_merge_block_t. */ + +typedef byte mrec_buf_t[UNIV_PAGE_SIZE]; + +/* Merge record in row_merge_block_t. The format is the same as a +record in ROW_FORMAT=COMPACT with the exception that the +REC_N_NEW_EXTRA_BYTES are omitted. */ +typedef byte mrec_t; + +/* Buffer for sorting in main memory. */ +struct row_merge_buf_struct { + mem_heap_t* heap; /* memory heap where allocated */ + dict_index_t* index; /* the index the tuples belong to */ + ulint total_size; /* total amount of data bytes */ + ulint n_tuples; /* number of data tuples */ + ulint max_tuples; /* maximum number of data tuples */ + const dfield_t**tuples; /* array of pointers to + arrays of fields that form + the data tuples */ + const dfield_t**tmp_tuples; /* temporary copy of tuples, + for sorting */ +}; + +typedef struct row_merge_buf_struct row_merge_buf_t; + +/* Information about temporary files used in merge sort are stored +to this structure */ + +struct merge_file_struct { + int fd; /* File descriptor */ + ulint offset; /* File offset */ +}; + +typedef struct merge_file_struct merge_file_t; + +#ifdef UNIV_DEBUG +/********************************************************** +Display a merge tuple. */ +static +void +row_merge_tuple_print( +/*==================*/ + FILE* f, /* in: output stream */ + const dfield_t* entry, /* in: tuple to print */ + ulint n_fields)/* in: number of fields in the tuple */ +{ + ulint j; + + for (j = 0; j < n_fields; j++) { + const dfield_t* field = &entry[j]; + + if (dfield_is_null(field)) { + fputs("\n NULL;", f); + } else { + ulint field_len = dfield_get_len(field); + ulint len = ut_min(field_len, 20); + if (dfield_is_ext(field)) { + fputs("\nE", f); + } else { + fputs("\n ", f); + } + ut_print_buf(f, dfield_get_data(field), len); + if (len != field_len) { + fprintf(f, " (total %lu bytes)", field_len); + } + } + } + putc('\n', f); +} +#endif /* UNIV_DEBUG */ + +/********************************************************** +Allocate a sort buffer. */ +static +row_merge_buf_t* +row_merge_buf_create_low( +/*=====================*/ + /* out,own: sort buffer */ + mem_heap_t* heap, /* in: heap where allocated */ + dict_index_t* index, /* in: secondary index */ + ulint max_tuples, /* in: maximum number of data tuples */ + ulint buf_size) /* in: size of the buffer, in bytes */ +{ + row_merge_buf_t* buf; + + ut_ad(max_tuples > 0); + ut_ad(max_tuples <= sizeof(row_merge_block_t)); + ut_ad(max_tuples < buf_size); + + buf = mem_heap_zalloc(heap, buf_size); + buf->heap = heap; + buf->index = index; + buf->max_tuples = max_tuples; + buf->tuples = mem_heap_alloc(heap, + 2 * max_tuples * sizeof *buf->tuples); + buf->tmp_tuples = buf->tuples + max_tuples; + + return(buf); +} + +/********************************************************** +Allocate a sort buffer. */ +static +row_merge_buf_t* +row_merge_buf_create( +/*=================*/ + /* out,own: sort buffer */ + dict_index_t* index) /* in: secondary index */ +{ + row_merge_buf_t* buf; + ulint max_tuples; + ulint buf_size; + mem_heap_t* heap; + + max_tuples = sizeof(row_merge_block_t) + / ut_max(1, dict_index_get_min_size(index)); + + buf_size = (sizeof *buf) + (max_tuples - 1) * sizeof *buf->tuples; + + heap = mem_heap_create(buf_size + sizeof(row_merge_block_t)); + + buf = row_merge_buf_create_low(heap, index, max_tuples, buf_size); + + return(buf); +} + +/********************************************************** +Empty a sort buffer. */ +static +row_merge_buf_t* +row_merge_buf_empty( +/*================*/ + /* out: sort buffer */ + row_merge_buf_t* buf) /* in,own: sort buffer */ +{ + ulint buf_size; + ulint max_tuples = buf->max_tuples; + mem_heap_t* heap = buf->heap; + dict_index_t* index = buf->index; + + buf_size = (sizeof *buf) + (max_tuples - 1) * sizeof *buf->tuples; + + mem_heap_empty(heap); + + return(row_merge_buf_create_low(heap, index, max_tuples, buf_size)); +} + +/********************************************************** +Deallocate a sort buffer. */ +static +void +row_merge_buf_free( +/*===============*/ + row_merge_buf_t* buf) /* in,own: sort buffer, to be freed */ +{ + mem_heap_free(buf->heap); +} + +/********************************************************** +Insert a data tuple into a sort buffer. */ +static +ibool +row_merge_buf_add( +/*==============*/ + /* out: TRUE if added, + FALSE if out of space */ + row_merge_buf_t* buf, /* in/out: sort buffer */ + const dtuple_t* row, /* in: row in clustered index */ + const row_ext_t* ext) /* in: cache of externally stored + column prefixes, or NULL */ +{ + ulint i; + ulint n_fields; + ulint data_size; + ulint extra_size; + const dict_index_t* index; + dfield_t* entry; + dfield_t* field; + + if (buf->n_tuples >= buf->max_tuples) { + return(FALSE); + } + + UNIV_PREFETCH_R(row->fields); + + index = buf->index; + + n_fields = dict_index_get_n_fields(index); + + entry = mem_heap_alloc(buf->heap, n_fields * sizeof *entry); + buf->tuples[buf->n_tuples] = entry; + field = entry; + + data_size = 0; + extra_size = UT_BITS_IN_BYTES(index->n_nullable); + + for (i = 0; i < n_fields; i++, field++) { + const dict_field_t* ifield; + const dict_col_t* col; + ulint col_no; + const dfield_t* row_field; + ulint len; + + ifield = dict_index_get_nth_field(index, i); + col = ifield->col; + col_no = dict_col_get_no(col); + row_field = dtuple_get_nth_field(row, col_no); + dfield_copy(field, row_field); + len = dfield_get_len(field); + + if (dfield_is_null(field)) { + ut_ad(!(col->prtype & DATA_NOT_NULL)); + continue; + } else if (UNIV_LIKELY(!ext)) { + } else if (dict_index_is_clust(index)) { + /* Flag externally stored fields. */ + const byte* buf = row_ext_lookup(ext, col_no, + &len); + if (UNIV_LIKELY_NULL(buf)) { + ut_a(buf != field_ref_zero); + if (i < dict_index_get_n_unique(index)) { + dfield_set_data(field, buf, len); + } else { + dfield_set_ext(field); + len = dfield_get_len(field); + } + } + } else { + const byte* buf = row_ext_lookup(ext, col_no, + &len); + if (UNIV_LIKELY_NULL(buf)) { + ut_a(buf != field_ref_zero); + dfield_set_data(field, buf, len); + } + } + + /* If a column prefix index, take only the prefix */ + + if (ifield->prefix_len) { + len = dtype_get_at_most_n_mbchars( + col->prtype, + col->mbminlen, col->mbmaxlen, + ifield->prefix_len, + len, dfield_get_data(field)); + dfield_set_len(field, len); + } + + ut_ad(len <= col->len || col->mtype == DATA_BLOB); + + if (ifield->fixed_len) { + ut_ad(len == ifield->fixed_len); + ut_ad(!dfield_is_ext(field)); + } else if (dfield_is_ext(field)) { + extra_size += 2; + } else if (len < 128 + || (col->len < 256 && col->mtype != DATA_BLOB)) { + extra_size++; + } else { + /* For variable-length columns, we look up the + maximum length from the column itself. If this + is a prefix index column shorter than 256 bytes, + this will waste one byte. */ + extra_size += 2; + } + data_size += len; + } + +#ifdef UNIV_DEBUG + { + ulint size; + ulint extra; + + size = rec_get_converted_size_comp(index, + REC_STATUS_ORDINARY, + entry, n_fields, &extra); + + ut_ad(data_size + extra_size + REC_N_NEW_EXTRA_BYTES == size); + ut_ad(extra_size + REC_N_NEW_EXTRA_BYTES == extra); + } +#endif /* UNIV_DEBUG */ + + /* Add to the total size of the record in row_merge_block_t + the encoded length of extra_size and the extra bytes (extra_size). + See row_merge_buf_write() for the variable-length encoding + of extra_size. */ + data_size += (extra_size + 1) + ((extra_size + 1) >= 0x80); + + /* The following assertion may fail if row_merge_block_t is + declared very small and a PRIMARY KEY is being created with + many prefix columns. In that case, the record may exceed the + page_zip_rec_needs_ext() limit. However, no further columns + will be moved to external storage until the record is inserted + to the clustered index B-tree. */ + ut_ad(data_size < sizeof(row_merge_block_t)); + + /* Reserve one byte for the end marker of row_merge_block_t. */ + if (buf->total_size + data_size >= sizeof(row_merge_block_t) - 1) { + return(FALSE); + } + + buf->total_size += data_size; + buf->n_tuples++; + + field = entry; + + /* Copy the data fields. */ + + do { + dfield_dup(field++, buf->heap); + } while (--n_fields); + + return(TRUE); +} + +/* Structure for reporting duplicate records. */ +struct row_merge_dup_struct { + const dict_index_t* index; /* index being sorted */ + TABLE* table; /* MySQL table object */ + ulint n_dup; /* number of duplicates */ +}; + +typedef struct row_merge_dup_struct row_merge_dup_t; + +/***************************************************************** +Report a duplicate key. */ +static +void +row_merge_dup_report( +/*=================*/ + row_merge_dup_t* dup, /* in/out: for reporting duplicates */ + const dfield_t* entry) /* in: duplicate index entry */ +{ + mrec_buf_t buf; + const dtuple_t* tuple; + dtuple_t tuple_store; + const rec_t* rec; + const dict_index_t* index = dup->index; + ulint n_fields= dict_index_get_n_fields(index); + mem_heap_t* heap = NULL; + ulint offsets_[REC_OFFS_NORMAL_SIZE]; + ulint* offsets; + ulint n_ext; + + if (dup->n_dup++) { + /* Only report the first duplicate record, + but count all duplicate records. */ + return; + } + + rec_offs_init(offsets_); + + /* Convert the tuple to a record and then to MySQL format. */ + + tuple = dtuple_from_fields(&tuple_store, entry, n_fields); + n_ext = dict_index_is_clust(index) ? dtuple_get_n_ext(tuple) : 0; + + rec = rec_convert_dtuple_to_rec(buf, index, tuple, n_ext); + offsets = rec_get_offsets(rec, index, offsets_, ULINT_UNDEFINED, + &heap); + + innobase_rec_to_mysql(dup->table, rec, index, offsets); + + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } +} + +/***************************************************************** +Compare two tuples. */ +static +int +row_merge_tuple_cmp( +/*================*/ + /* out: 1, 0, -1 if a is greater, + equal, less, respectively, than b */ + ulint n_field,/* in: number of fields */ + const dfield_t* a, /* in: first tuple to be compared */ + const dfield_t* b, /* in: second tuple to be compared */ + row_merge_dup_t* dup) /* in/out: for reporting duplicates */ +{ + int cmp; + const dfield_t* field = a; + + /* Compare the fields of the tuples until a difference is + found or we run out of fields to compare. If !cmp at the + end, the tuples are equal. */ + do { + cmp = cmp_dfield_dfield(a++, b++); + } while (!cmp && --n_field); + + if (UNIV_UNLIKELY(!cmp) && UNIV_LIKELY_NULL(dup)) { + /* Report a duplicate value error if the tuples are + logically equal. NULL columns are logically inequal, + although they are equal in the sorting order. Find + out if any of the fields are NULL. */ + for (b = field; b != a; b++) { + if (dfield_is_null(b)) { + + goto func_exit; + } + } + + row_merge_dup_report(dup, field); + } + +func_exit: + return(cmp); +} + +/************************************************************************** +Merge sort the tuple buffer in main memory. */ +static +void +row_merge_tuple_sort( +/*=================*/ + ulint n_field,/* in: number of fields */ + row_merge_dup_t* dup, /* in/out: for reporting duplicates */ + const dfield_t** tuples, /* in/out: tuples */ + const dfield_t** aux, /* in/out: work area */ + ulint low, /* in: lower bound of the + sorting area, inclusive */ + ulint high) /* in: upper bound of the + sorting area, exclusive */ +{ +#define row_merge_tuple_sort_ctx(a,b,c,d) \ + row_merge_tuple_sort(n_field, dup, a, b, c, d) +#define row_merge_tuple_cmp_ctx(a,b) row_merge_tuple_cmp(n_field, a, b, dup) + + UT_SORT_FUNCTION_BODY(row_merge_tuple_sort_ctx, + tuples, aux, low, high, row_merge_tuple_cmp_ctx); +} + +/********************************************************** +Sort a buffer. */ +static +void +row_merge_buf_sort( +/*===============*/ + row_merge_buf_t* buf, /* in/out: sort buffer */ + row_merge_dup_t* dup) /* in/out: for reporting duplicates */ +{ + row_merge_tuple_sort(dict_index_get_n_unique(buf->index), dup, + buf->tuples, buf->tmp_tuples, 0, buf->n_tuples); +} + +/********************************************************** +Write a buffer to a block. */ +static +void +row_merge_buf_write( +/*================*/ + const row_merge_buf_t* buf, /* in: sorted buffer */ +#ifdef UNIV_DEBUG + const merge_file_t* of, /* in: output file */ +#endif /* UNIV_DEBUG */ + row_merge_block_t* block) /* out: buffer for writing to file */ +#ifndef UNIV_DEBUG +# define row_merge_buf_write(buf, of, block) row_merge_buf_write(buf, block) +#endif /* !UNIV_DEBUG */ +{ + const dict_index_t* index = buf->index; + ulint n_fields= dict_index_get_n_fields(index); + byte* b = &(*block)[0]; + + ulint i; + + for (i = 0; i < buf->n_tuples; i++) { + ulint size; + ulint extra_size; + const dfield_t* entry = buf->tuples[i]; + + size = rec_get_converted_size_comp(index, + REC_STATUS_ORDINARY, + entry, n_fields, + &extra_size); + ut_ad(size > extra_size); + ut_ad(extra_size >= REC_N_NEW_EXTRA_BYTES); + extra_size -= REC_N_NEW_EXTRA_BYTES; + size -= REC_N_NEW_EXTRA_BYTES; + + /* Encode extra_size + 1 */ + if (extra_size + 1 < 0x80) { + *b++ = (byte) (extra_size + 1); + } else { + ut_ad((extra_size + 1) < 0x8000); + *b++ = (byte) (0x80 | ((extra_size + 1) >> 8)); + *b++ = (byte) (extra_size + 1); + } + + ut_ad(b + size < block[1]); + + rec_convert_dtuple_to_rec_comp(b + extra_size, 0, index, + REC_STATUS_ORDINARY, + entry, n_fields); + + b += size; + +#ifdef UNIV_DEBUG + if (row_merge_print_write) { + fprintf(stderr, "row_merge_buf_write %p,%d,%lu %lu", + (void*) b, of->fd, (ulong) of->offset, + (ulong) i); + row_merge_tuple_print(stderr, entry, n_fields); + } +#endif /* UNIV_DEBUG */ + } + + /* Write an "end-of-chunk" marker. */ + ut_a(b < block[1]); + ut_a(b == block[0] + buf->total_size); + *b++ = 0; +#ifdef UNIV_DEBUG_VALGRIND + /* The rest of the block is uninitialized. Initialize it + to avoid bogus warnings. */ + memset(b, 0xff, block[1] - b); +#endif /* UNIV_DEBUG_VALGRIND */ +#ifdef UNIV_DEBUG + if (row_merge_print_write) { + fprintf(stderr, "row_merge_buf_write %p,%d,%lu EOF\n", + (void*) b, of->fd, (ulong) of->offset); + } +#endif /* UNIV_DEBUG */ +} + +/********************************************************** +Create a memory heap and allocate space for row_merge_rec_offsets(). */ +static +mem_heap_t* +row_merge_heap_create( +/*==================*/ + /* out: memory heap */ + const dict_index_t* index, /* in: record descriptor */ + ulint** offsets1, /* out: offsets */ + ulint** offsets2) /* out: offsets */ +{ + ulint i = 1 + REC_OFFS_HEADER_SIZE + + dict_index_get_n_fields(index); + mem_heap_t* heap = mem_heap_create(2 * i * sizeof *offsets1); + + *offsets1 = mem_heap_alloc(heap, i * sizeof *offsets1); + *offsets2 = mem_heap_alloc(heap, i * sizeof *offsets2); + + (*offsets1)[0] = (*offsets2)[0] = i; + (*offsets1)[1] = (*offsets2)[1] = dict_index_get_n_fields(index); + + return(heap); +} + +/************************************************************************** +Search an index object by name and column names. If several indexes match, +return the index with the max id. */ +static +dict_index_t* +row_merge_dict_table_get_index( +/*===========================*/ + /* out: matching index, + NULL if not found */ + dict_table_t* table, /* in: table */ + const merge_index_def_t*index_def) /* in: index definition */ +{ + ulint i; + dict_index_t* index; + const char** column_names; + + column_names = mem_alloc(index_def->n_fields * sizeof *column_names); + + for (i = 0; i < index_def->n_fields; ++i) { + column_names[i] = index_def->fields[i].field_name; + } + + index = dict_table_get_index_by_max_id( + table, index_def->name, column_names, index_def->n_fields); + + mem_free((void*) column_names); + + return(index); +} + +/************************************************************************ +Read a merge block from the file system. */ +static +ibool +row_merge_read( +/*===========*/ + /* out: TRUE if request was + successful, FALSE if fail */ + int fd, /* in: file descriptor */ + ulint offset, /* in: offset where to read */ + row_merge_block_t* buf) /* out: data */ +{ + ib_uint64_t ofs = ((ib_uint64_t) offset) * sizeof *buf; + ibool success; + + success = os_file_read_no_error_handling(OS_FILE_FROM_FD(fd), buf, + (ulint) (ofs & 0xFFFFFFFF), + (ulint) (ofs >> 32), + sizeof *buf); + if (UNIV_UNLIKELY(!success)) { + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: failed to read merge block at %llu\n", ofs); + } + + return(UNIV_LIKELY(success)); +} + +/************************************************************************ +Read a merge block from the file system. */ +static +ibool +row_merge_write( +/*============*/ + /* out: TRUE if request was + successful, FALSE if fail */ + int fd, /* in: file descriptor */ + ulint offset, /* in: offset where to write */ + const void* buf) /* in: data */ +{ + ib_uint64_t ofs = ((ib_uint64_t) offset) + * sizeof(row_merge_block_t); + + return(UNIV_LIKELY(os_file_write("(merge)", OS_FILE_FROM_FD(fd), buf, + (ulint) (ofs & 0xFFFFFFFF), + (ulint) (ofs >> 32), + sizeof(row_merge_block_t)))); +} + +/************************************************************************ +Read a merge record. */ +static +const byte* +row_merge_read_rec( +/*===============*/ + /* out: pointer to next record, + or NULL on I/O error + or end of list */ + row_merge_block_t* block, /* in/out: file buffer */ + mrec_buf_t* buf, /* in/out: secondary buffer */ + const byte* b, /* in: pointer to record */ + const dict_index_t* index, /* in: index of the record */ + int fd, /* in: file descriptor */ + ulint* foffs, /* in/out: file offset */ + const mrec_t** mrec, /* out: pointer to merge record, + or NULL on end of list + (non-NULL on I/O error) */ + ulint* offsets)/* out: offsets of mrec */ +{ + ulint extra_size; + ulint data_size; + ulint avail_size; + + ut_ad(block); + ut_ad(buf); + ut_ad(b >= block[0]); + ut_ad(b < block[1]); + ut_ad(index); + ut_ad(foffs); + ut_ad(mrec); + ut_ad(offsets); + + ut_ad(*offsets == 1 + REC_OFFS_HEADER_SIZE + + dict_index_get_n_fields(index)); + + extra_size = *b++; + + if (UNIV_UNLIKELY(!extra_size)) { + /* End of list */ + *mrec = NULL; +#ifdef UNIV_DEBUG + if (row_merge_print_read) { + fprintf(stderr, "row_merge_read %p,%p,%d,%lu EOF\n", + (const void*) b, (const void*) block, + fd, (ulong) *foffs); + } +#endif /* UNIV_DEBUG */ + return(NULL); + } + + if (extra_size >= 0x80) { + /* Read another byte of extra_size. */ + + if (UNIV_UNLIKELY(b >= block[1])) { + if (!row_merge_read(fd, ++(*foffs), block)) { +err_exit: + /* Signal I/O error. */ + *mrec = b; + return(NULL); + } + + /* Wrap around to the beginning of the buffer. */ + b = block[0]; + } + + extra_size = (extra_size & 0x7f) << 8; + extra_size |= *b++; + } + + /* Normalize extra_size. Above, value 0 signals "end of list". */ + extra_size--; + + /* Read the extra bytes. */ + + if (UNIV_UNLIKELY(b + extra_size >= block[1])) { + /* The record spans two blocks. Copy the entire record + to the auxiliary buffer and handle this as a special + case. */ + + avail_size = block[1] - b; + + memcpy(*buf, b, avail_size); + + if (!row_merge_read(fd, ++(*foffs), block)) { + + goto err_exit; + } + + /* Wrap around to the beginning of the buffer. */ + b = block[0]; + + /* Copy the record. */ + memcpy(*buf + avail_size, b, extra_size - avail_size); + b += extra_size - avail_size; + + *mrec = *buf + extra_size; + + rec_init_offsets_comp_ordinary(*mrec, 0, index, offsets); + + data_size = rec_offs_data_size(offsets); + + /* These overflows should be impossible given that + records are much smaller than either buffer, and + the record starts near the beginning of each buffer. */ + ut_a(extra_size + data_size < sizeof *buf); + ut_a(b + data_size < block[1]); + + /* Copy the data bytes. */ + memcpy(*buf + extra_size, b, data_size); + b += data_size; + + goto func_exit; + } + + *mrec = b + extra_size; + + rec_init_offsets_comp_ordinary(*mrec, 0, index, offsets); + + data_size = rec_offs_data_size(offsets); + ut_ad(extra_size + data_size < sizeof *buf); + + b += extra_size + data_size; + + if (UNIV_LIKELY(b < block[1])) { + /* The record fits entirely in the block. + This is the normal case. */ + goto func_exit; + } + + /* The record spans two blocks. Copy it to buf. */ + + b -= extra_size + data_size; + avail_size = block[1] - b; + memcpy(*buf, b, avail_size); + *mrec = *buf + extra_size; + rec_offs_make_valid(*mrec, index, offsets); + + if (!row_merge_read(fd, ++(*foffs), block)) { + + goto err_exit; + } + + /* Wrap around to the beginning of the buffer. */ + b = block[0]; + + /* Copy the rest of the record. */ + memcpy(*buf + avail_size, b, extra_size + data_size - avail_size); + b += extra_size + data_size - avail_size; + +func_exit: +#ifdef UNIV_DEBUG + if (row_merge_print_read) { + fprintf(stderr, "row_merge_read %p,%p,%d,%lu ", + (const void*) b, (const void*) block, + fd, (ulong) *foffs); + rec_print_comp(stderr, *mrec, offsets); + putc('\n', stderr); + } +#endif /* UNIV_DEBUG */ + + return(b); +} + +/************************************************************************ +Write a merge record. */ +static +void +row_merge_write_rec_low( +/*====================*/ + byte* b, /* out: buffer */ + ulint e, /* in: encoded extra_size */ +#ifdef UNIV_DEBUG + ulint size, /* in: total size to write */ + int fd, /* in: file descriptor */ + ulint foffs, /* in: file offset */ +#endif /* UNIV_DEBUG */ + const mrec_t* mrec, /* in: record to write */ + const ulint* offsets)/* in: offsets of mrec */ +#ifndef UNIV_DEBUG +# define row_merge_write_rec_low(b, e, size, fd, foffs, mrec, offsets) \ + row_merge_write_rec_low(b, e, mrec, offsets) +#endif /* !UNIV_DEBUG */ +{ +#ifdef UNIV_DEBUG + const byte* const end = b + size; + ut_ad(e == rec_offs_extra_size(offsets) + 1); + + if (row_merge_print_write) { + fprintf(stderr, "row_merge_write %p,%d,%lu ", + (void*) b, fd, (ulong) foffs); + rec_print_comp(stderr, mrec, offsets); + putc('\n', stderr); + } +#endif /* UNIV_DEBUG */ + + if (e < 0x80) { + *b++ = (byte) e; + } else { + *b++ = (byte) (0x80 | (e >> 8)); + *b++ = (byte) e; + } + + memcpy(b, mrec - rec_offs_extra_size(offsets), rec_offs_size(offsets)); + ut_ad(b + rec_offs_size(offsets) == end); +} + +/************************************************************************ +Write a merge record. */ +static +byte* +row_merge_write_rec( +/*================*/ + /* out: pointer to end of block, + or NULL on error */ + row_merge_block_t* block, /* in/out: file buffer */ + mrec_buf_t* buf, /* in/out: secondary buffer */ + byte* b, /* in: pointer to end of block */ + int fd, /* in: file descriptor */ + ulint* foffs, /* in/out: file offset */ + const mrec_t* mrec, /* in: record to write */ + const ulint* offsets)/* in: offsets of mrec */ +{ + ulint extra_size; + ulint size; + ulint avail_size; + + ut_ad(block); + ut_ad(buf); + ut_ad(b >= block[0]); + ut_ad(b < block[1]); + ut_ad(mrec); + ut_ad(foffs); + ut_ad(mrec < block[0] || mrec > block[1]); + ut_ad(mrec < buf[0] || mrec > buf[1]); + + /* Normalize extra_size. Value 0 signals "end of list". */ + extra_size = rec_offs_extra_size(offsets) + 1; + + size = extra_size + (extra_size >= 0x80) + + rec_offs_data_size(offsets); + + if (UNIV_UNLIKELY(b + size >= block[1])) { + /* The record spans two blocks. + Copy it to the temporary buffer first. */ + avail_size = block[1] - b; + + row_merge_write_rec_low(buf[0], + extra_size, size, fd, *foffs, + mrec, offsets); + + /* Copy the head of the temporary buffer, write + the completed block, and copy the tail of the + record to the head of the new block. */ + memcpy(b, buf[0], avail_size); + + if (!row_merge_write(fd, (*foffs)++, block)) { + return(NULL); + } + + UNIV_MEM_INVALID(block[0], sizeof block[0]); + + /* Copy the rest. */ + b = block[0]; + memcpy(b, buf[0] + avail_size, size - avail_size); + b += size - avail_size; + } else { + row_merge_write_rec_low(b, extra_size, size, fd, *foffs, + mrec, offsets); + b += size; + } + + return(b); +} + +/************************************************************************ +Write an end-of-list marker. */ +static +byte* +row_merge_write_eof( +/*================*/ + /* out: pointer to end of block, + or NULL on error */ + row_merge_block_t* block, /* in/out: file buffer */ + byte* b, /* in: pointer to end of block */ + int fd, /* in: file descriptor */ + ulint* foffs) /* in/out: file offset */ +{ + ut_ad(block); + ut_ad(b >= block[0]); + ut_ad(b < block[1]); + ut_ad(foffs); +#ifdef UNIV_DEBUG + if (row_merge_print_write) { + fprintf(stderr, "row_merge_write %p,%p,%d,%lu EOF\n", + (void*) b, (void*) block, fd, (ulong) *foffs); + } +#endif /* UNIV_DEBUG */ + + *b++ = 0; + UNIV_MEM_ASSERT_RW(block[0], b - block[0]); + UNIV_MEM_ASSERT_W(block[0], sizeof block[0]); +#ifdef UNIV_DEBUG_VALGRIND + /* The rest of the block is uninitialized. Initialize it + to avoid bogus warnings. */ + memset(b, 0xff, block[1] - b); +#endif /* UNIV_DEBUG_VALGRIND */ + + if (!row_merge_write(fd, (*foffs)++, block)) { + return(NULL); + } + + UNIV_MEM_INVALID(block[0], sizeof block[0]); + return(block[0]); +} + +/***************************************************************** +Compare two merge records. */ +static +int +row_merge_cmp( +/*==========*/ + /* out: 1, 0, -1 if + mrec1 is greater, equal, less, + respectively, than mrec2 */ + const mrec_t* mrec1, /* in: first merge + record to be compared */ + const mrec_t* mrec2, /* in: second merge + record to be compared */ + const ulint* offsets1, /* in: first record offsets */ + const ulint* offsets2, /* in: second record offsets */ + const dict_index_t* index) /* in: index */ +{ + int cmp; + + cmp = cmp_rec_rec_simple(mrec1, mrec2, offsets1, offsets2, index); + +#ifdef UNIV_DEBUG + if (row_merge_print_cmp) { + fputs("row_merge_cmp1 ", stderr); + rec_print_comp(stderr, mrec1, offsets1); + fputs("\nrow_merge_cmp2 ", stderr); + rec_print_comp(stderr, mrec2, offsets2); + fprintf(stderr, "\nrow_merge_cmp=%d\n", cmp); + } +#endif /* UNIV_DEBUG */ + + return(cmp); +} + +/************************************************************************ +Reads clustered index of the table and create temporary files +containing the index entries for the indexes to be built. */ +static +ulint +row_merge_read_clustered_index( +/*===========================*/ + /* out: DB_SUCCESS or error */ + trx_t* trx, /* in: transaction */ + TABLE* table, /* in/out: MySQL table object, + for reporting erroneous records */ + const dict_table_t* old_table,/* in: table where rows are + read from */ + const dict_table_t* new_table,/* in: table where indexes are + created; identical to old_table + unless creating a PRIMARY KEY */ + dict_index_t** index, /* in: indexes to be created */ + merge_file_t* files, /* in: temporary files */ + ulint n_index,/* in: number of indexes to create */ + row_merge_block_t* block) /* in/out: file buffer */ +{ + dict_index_t* clust_index; /* Clustered index */ + mem_heap_t* row_heap; /* Heap memory to create + clustered index records */ + row_merge_buf_t** merge_buf; /* Temporary list for records*/ + btr_pcur_t pcur; /* Persistent cursor on the + clustered index */ + mtr_t mtr; /* Mini transaction */ + ulint err = DB_SUCCESS;/* Return code */ + ulint i; + ulint n_nonnull = 0; /* number of columns + changed to NOT NULL */ + ulint* nonnull = NULL; /* NOT NULL columns */ + + trx->op_info = "reading clustered index"; + + ut_ad(trx); + ut_ad(old_table); + ut_ad(new_table); + ut_ad(index); + ut_ad(files); + + /* Create and initialize memory for record buffers */ + + merge_buf = mem_alloc(n_index * sizeof *merge_buf); + + for (i = 0; i < n_index; i++) { + merge_buf[i] = row_merge_buf_create(index[i]); + } + + mtr_start(&mtr); + + /* Find the clustered index and create a persistent cursor + based on that. */ + + clust_index = dict_table_get_first_index(old_table); + + btr_pcur_open_at_index_side( + TRUE, clust_index, BTR_SEARCH_LEAF, &pcur, TRUE, &mtr); + + if (UNIV_UNLIKELY(old_table != new_table)) { + ulint n_cols = dict_table_get_n_cols(old_table); + + /* A primary key will be created. Identify the + columns that were flagged NOT NULL in the new table, + so that we can quickly check that the records in the + (old) clustered index do not violate the added NOT + NULL constraints. */ + + ut_a(n_cols == dict_table_get_n_cols(new_table)); + + nonnull = mem_alloc(n_cols * sizeof *nonnull); + + for (i = 0; i < n_cols; i++) { + if (dict_table_get_nth_col(old_table, i)->prtype + & DATA_NOT_NULL) { + + continue; + } + + if (dict_table_get_nth_col(new_table, i)->prtype + & DATA_NOT_NULL) { + + nonnull[n_nonnull++] = i; + } + } + + if (!n_nonnull) { + mem_free(nonnull); + nonnull = NULL; + } + } + + row_heap = mem_heap_create(sizeof(mrec_buf_t)); + + /* Scan the clustered index. */ + for (;;) { + const rec_t* rec; + ulint* offsets; + dtuple_t* row = NULL; + row_ext_t* ext; + ibool has_next = TRUE; + + btr_pcur_move_to_next_on_page(&pcur); + + /* When switching pages, commit the mini-transaction + in order to release the latch on the old page. */ + + if (btr_pcur_is_after_last_on_page(&pcur)) { + btr_pcur_store_position(&pcur, &mtr); + mtr_commit(&mtr); + mtr_start(&mtr); + btr_pcur_restore_position(BTR_SEARCH_LEAF, + &pcur, &mtr); + has_next = btr_pcur_move_to_next_user_rec(&pcur, &mtr); + } + + if (UNIV_LIKELY(has_next)) { + rec = btr_pcur_get_rec(&pcur); + offsets = rec_get_offsets(rec, clust_index, NULL, + ULINT_UNDEFINED, &row_heap); + + /* Skip delete marked records. */ + if (rec_get_deleted_flag( + rec, dict_table_is_comp(old_table))) { + continue; + } + + srv_n_rows_inserted++; + + /* Build a row based on the clustered index. */ + + row = row_build(ROW_COPY_POINTERS, clust_index, + rec, offsets, + new_table, &ext, row_heap); + + if (UNIV_LIKELY_NULL(nonnull)) { + for (i = 0; i < n_nonnull; i++) { + dfield_t* field + = &row->fields[nonnull[i]]; + dtype_t* field_type + = dfield_get_type(field); + + ut_a(!(field_type->prtype + & DATA_NOT_NULL)); + + if (dfield_is_null(field)) { + err = DB_PRIMARY_KEY_IS_NULL; + i = 0; + goto err_exit; + } + + field_type->prtype |= DATA_NOT_NULL; + } + } + } + + /* Build all entries for all the indexes to be created + in a single scan of the clustered index. */ + + for (i = 0; i < n_index; i++) { + row_merge_buf_t* buf = merge_buf[i]; + merge_file_t* file = &files[i]; + const dict_index_t* index = buf->index; + + if (UNIV_LIKELY + (row && row_merge_buf_add(buf, row, ext))) { + continue; + } + + /* The buffer must be sufficiently large + to hold at least one record. */ + ut_ad(buf->n_tuples || !has_next); + + /* We have enough data tuples to form a block. + Sort them and write to disk. */ + + if (buf->n_tuples) { + if (dict_index_is_unique(index)) { + row_merge_dup_t dup; + dup.index = buf->index; + dup.table = table; + dup.n_dup = 0; + + row_merge_buf_sort(buf, &dup); + + if (dup.n_dup) { + err = DB_DUPLICATE_KEY; +err_exit: + trx->error_key_num = i; + goto func_exit; + } + } else { + row_merge_buf_sort(buf, NULL); + } + } + + row_merge_buf_write(buf, file, block); + + if (!row_merge_write(file->fd, file->offset++, + block)) { + err = DB_OUT_OF_FILE_SPACE; + goto err_exit; + } + + UNIV_MEM_INVALID(block[0], sizeof block[0]); + merge_buf[i] = row_merge_buf_empty(buf); + + /* Try writing the record again, now that + the buffer has been written out and emptied. */ + + if (UNIV_UNLIKELY + (row && !row_merge_buf_add(buf, row, ext))) { + /* An empty buffer should have enough + room for at least one record. */ + ut_error; + } + } + + mem_heap_empty(row_heap); + + if (UNIV_UNLIKELY(!has_next)) { + goto func_exit; + } + } + +func_exit: + btr_pcur_close(&pcur); + mtr_commit(&mtr); + mem_heap_free(row_heap); + + if (UNIV_LIKELY_NULL(nonnull)) { + mem_free(nonnull); + } + + for (i = 0; i < n_index; i++) { + row_merge_buf_free(merge_buf[i]); + } + + mem_free(merge_buf); + + trx->op_info = ""; + + return(err); +} + +/***************************************************************** +Merge two blocks of linked lists on disk and write a bigger block. */ +static +ulint +row_merge_blocks( +/*=============*/ + /* out: DB_SUCCESS or error code */ + const dict_index_t* index, /* in: index being created */ + merge_file_t* file, /* in/out: file containing + index entries */ + row_merge_block_t* block, /* in/out: 3 buffers */ + ulint* foffs0, /* in/out: offset of first + source list in the file */ + ulint* foffs1, /* in/out: offset of second + source list in the file */ + merge_file_t* of, /* in/out: output file */ + TABLE* table) /* in/out: MySQL table, for + reporting erroneous key value + if applicable */ +{ + mem_heap_t* heap; /* memory heap for offsets0, offsets1 */ + + mrec_buf_t buf[3]; /* buffer for handling split mrec in block[] */ + const byte* b0; /* pointer to block[0] */ + const byte* b1; /* pointer to block[1] */ + byte* b2; /* pointer to block[2] */ + const mrec_t* mrec0; /* merge rec, points to block[0] or buf[0] */ + const mrec_t* mrec1; /* merge rec, points to block[1] or buf[1] */ + ulint* offsets0;/* offsets of mrec0 */ + ulint* offsets1;/* offsets of mrec1 */ + + heap = row_merge_heap_create(index, &offsets0, &offsets1); + + /* Write a record and read the next record. Split the output + file in two halves, which can be merged on the following pass. */ +#define ROW_MERGE_WRITE_GET_NEXT(N, AT_END) \ + do { \ + b2 = row_merge_write_rec(&block[2], &buf[2], b2, \ + of->fd, &of->offset, \ + mrec##N, offsets##N); \ + if (UNIV_UNLIKELY(!b2)) { \ + goto corrupt; \ + } \ + b##N = row_merge_read_rec(&block[N], &buf[N], \ + b##N, index, \ + file->fd, foffs##N, \ + &mrec##N, offsets##N); \ + if (UNIV_UNLIKELY(!b##N)) { \ + if (mrec##N) { \ + goto corrupt; \ + } \ + AT_END; \ + } \ + } while (0) + + if (!row_merge_read(file->fd, *foffs0, &block[0]) + || !row_merge_read(file->fd, *foffs1, &block[1])) { +corrupt: + mem_heap_free(heap); + return(DB_CORRUPTION); + } + + b0 = block[0]; + b1 = block[1]; + b2 = block[2]; + + b0 = row_merge_read_rec(&block[0], &buf[0], b0, index, file->fd, + foffs0, &mrec0, offsets0); + b1 = row_merge_read_rec(&block[1], &buf[1], b1, index, file->fd, + foffs1, &mrec1, offsets1); + if (UNIV_UNLIKELY(!b0 && mrec0) + || UNIV_UNLIKELY(!b1 && mrec1)) { + + goto corrupt; + } + + while (mrec0 && mrec1) { + switch (row_merge_cmp(mrec0, mrec1, + offsets0, offsets1, index)) { + case 0: + if (UNIV_UNLIKELY + (dict_index_is_unique(index))) { + innobase_rec_to_mysql(table, mrec0, + index, offsets0); + mem_heap_free(heap); + return(DB_DUPLICATE_KEY); + } + /* fall through */ + case -1: + ROW_MERGE_WRITE_GET_NEXT(0, goto merged); + break; + case 1: + ROW_MERGE_WRITE_GET_NEXT(1, goto merged); + break; + default: + ut_error; + } + + } + +merged: + if (mrec0) { + /* append all mrec0 to output */ + for (;;) { + ROW_MERGE_WRITE_GET_NEXT(0, goto done0); + } + } +done0: + if (mrec1) { + /* append all mrec1 to output */ + for (;;) { + ROW_MERGE_WRITE_GET_NEXT(1, goto done1); + } + } +done1: + + mem_heap_free(heap); + b2 = row_merge_write_eof(&block[2], b2, of->fd, &of->offset); + return(b2 ? DB_SUCCESS : DB_CORRUPTION); +} + +/***************************************************************** +Merge disk files. */ +static +ulint +row_merge( +/*======*/ + /* out: DB_SUCCESS or error code */ + const dict_index_t* index, /* in: index being created */ + merge_file_t* file, /* in/out: file containing + index entries */ + ulint half, /* in: half the file */ + row_merge_block_t* block, /* in/out: 3 buffers */ + int* tmpfd, /* in/out: temporary file handle */ + TABLE* table) /* in/out: MySQL table, for + reporting erroneous key value + if applicable */ +{ + ulint foffs0; /* first input offset */ + ulint foffs1; /* second input offset */ + ulint error; /* error code */ + merge_file_t of; /* output file */ + + UNIV_MEM_ASSERT_W(block[0], 3 * sizeof block[0]); + ut_ad(half > 0); + + of.fd = *tmpfd; + of.offset = 0; + + /* Merge blocks to the output file. */ + foffs0 = 0; + foffs1 = half; + + for (; foffs0 < half && foffs1 < file->offset; foffs0++, foffs1++) { + error = row_merge_blocks(index, file, block, + &foffs0, &foffs1, &of, table); + + if (error != DB_SUCCESS) { + return(error); + } + } + + /* Copy the last block, if there is one. */ + while (foffs0 < half) { + if (!row_merge_read(file->fd, foffs0++, block) + || !row_merge_write(of.fd, of.offset++, block)) { + return(DB_CORRUPTION); + } + } + while (foffs1 < file->offset) { + if (!row_merge_read(file->fd, foffs1++, block) + || !row_merge_write(of.fd, of.offset++, block)) { + return(DB_CORRUPTION); + } + } + + /* Swap file descriptors for the next pass. */ + *tmpfd = file->fd; + *file = of; + + UNIV_MEM_INVALID(block[0], 3 * sizeof block[0]); + + return(DB_SUCCESS); +} + +/***************************************************************** +Merge disk files. */ +static +ulint +row_merge_sort( +/*===========*/ + /* out: DB_SUCCESS or error code */ + const dict_index_t* index, /* in: index being created */ + merge_file_t* file, /* in/out: file containing + index entries */ + row_merge_block_t* block, /* in/out: 3 buffers */ + int* tmpfd, /* in/out: temporary file handle */ + TABLE* table) /* in/out: MySQL table, for + reporting erroneous key value + if applicable */ +{ + ulint blksz; /* block size */ + + for (blksz = 1; blksz < file->offset; blksz *= 2) { + ulint half; + ulint error; + + ut_ad(ut_is_2pow(blksz)); + half = ut_2pow_round((file->offset + (blksz - 1)) / 2, blksz); + error = row_merge(index, file, half, block, tmpfd, table); + + if (error != DB_SUCCESS) { + return(error); + } + } + + return(DB_SUCCESS); +} + +/***************************************************************** +Copy externally stored columns to the data tuple. */ +static +void +row_merge_copy_blobs( +/*=================*/ + const mrec_t* mrec, /* in: merge record */ + const ulint* offsets,/* in: offsets of mrec */ + ulint zip_size,/* in: compressed page size in bytes, or 0 */ + dtuple_t* tuple, /* in/out: data tuple */ + mem_heap_t* heap) /* in/out: memory heap */ +{ + ulint i; + ulint n_fields = dtuple_get_n_fields(tuple); + + for (i = 0; i < n_fields; i++) { + ulint len; + const void* data; + dfield_t* field = dtuple_get_nth_field(tuple, i); + + if (!dfield_is_ext(field)) { + continue; + } + + ut_ad(!dfield_is_null(field)); + + /* The table is locked during index creation. + Therefore, externally stored columns cannot possibly + be freed between the time the BLOB pointers are read + (row_merge_read_clustered_index()) and dereferenced + (below). */ + data = btr_rec_copy_externally_stored_field( + mrec, offsets, zip_size, i, &len, heap); + + dfield_set_data(field, data, len); + } +} + +/************************************************************************ +Read sorted file containing index data tuples and insert these data +tuples to the index */ +static +ulint +row_merge_insert_index_tuples( +/*==========================*/ + /* out: DB_SUCCESS or error number */ + trx_t* trx, /* in: transaction */ + dict_index_t* index, /* in: index */ + dict_table_t* table, /* in: new table */ + ulint zip_size,/* in: compressed page size of + the old table, or 0 if uncompressed */ + int fd, /* in: file descriptor */ + row_merge_block_t* block) /* in/out: file buffer */ +{ + mrec_buf_t buf; + const byte* b; + que_thr_t* thr; + ins_node_t* node; + mem_heap_t* tuple_heap; + mem_heap_t* graph_heap; + ulint error = DB_SUCCESS; + ulint foffs = 0; + ulint* offsets; + + ut_ad(trx); + ut_ad(index); + ut_ad(table); + + /* We use the insert query graph as the dummy graph + needed in the row module call */ + + trx->op_info = "inserting index entries"; + + graph_heap = mem_heap_create(500); + node = ins_node_create(INS_DIRECT, table, graph_heap); + + thr = pars_complete_graph_for_exec(node, trx, graph_heap); + + que_thr_move_to_run_state_for_mysql(thr, trx); + + tuple_heap = mem_heap_create(1000); + + { + ulint i = 1 + REC_OFFS_HEADER_SIZE + + dict_index_get_n_fields(index); + offsets = mem_heap_alloc(graph_heap, i * sizeof *offsets); + offsets[0] = i; + offsets[1] = dict_index_get_n_fields(index); + } + + b = *block; + + if (!row_merge_read(fd, foffs, block)) { + error = DB_CORRUPTION; + } else { + for (;;) { + const mrec_t* mrec; + dtuple_t* dtuple; + ulint n_ext; + + b = row_merge_read_rec(block, &buf, b, index, + fd, &foffs, &mrec, offsets); + if (UNIV_UNLIKELY(!b)) { + /* End of list, or I/O error */ + if (mrec) { + error = DB_CORRUPTION; + } + break; + } + + dtuple = row_rec_to_index_entry_low( + mrec, index, offsets, &n_ext, tuple_heap); + + if (UNIV_UNLIKELY(n_ext)) { + row_merge_copy_blobs(mrec, offsets, zip_size, + dtuple, tuple_heap); + } + + node->row = dtuple; + node->table = table; + node->trx_id = trx->id; + + ut_ad(dtuple_validate(dtuple)); + + do { + thr->run_node = thr; + thr->prev_node = thr->common.parent; + + error = row_ins_index_entry(index, dtuple, + 0, FALSE, thr); + + if (UNIV_LIKELY(error == DB_SUCCESS)) { + + goto next_rec; + } + + thr->lock_state = QUE_THR_LOCK_ROW; + trx->error_state = error; + que_thr_stop_for_mysql(thr); + thr->lock_state = QUE_THR_LOCK_NOLOCK; + } while (row_mysql_handle_errors(&error, trx, + thr, NULL)); + + goto err_exit; +next_rec: + mem_heap_empty(tuple_heap); + } + } + + que_thr_stop_for_mysql_no_error(thr, trx); +err_exit: + que_graph_free(thr->graph); + + trx->op_info = ""; + + mem_heap_free(tuple_heap); + + return(error); +} + +/************************************************************************* +Sets an exclusive lock on a table, for the duration of creating indexes. */ +UNIV_INTERN +ulint +row_merge_lock_table( +/*=================*/ + /* out: error code or DB_SUCCESS */ + trx_t* trx, /* in/out: transaction */ + dict_table_t* table, /* in: table to lock */ + enum lock_mode mode) /* in: LOCK_X or LOCK_S */ +{ + mem_heap_t* heap; + que_thr_t* thr; + ulint err; + sel_node_t* node; + + ut_ad(trx); + ut_ad(trx->mysql_thread_id == os_thread_get_curr_id()); + ut_ad(mode == LOCK_X || mode == LOCK_S); + + heap = mem_heap_create(512); + + trx->op_info = "setting table lock for creating or dropping index"; + + node = sel_node_create(heap); + thr = pars_complete_graph_for_exec(node, trx, heap); + thr->graph->state = QUE_FORK_ACTIVE; + + /* We use the select query graph as the dummy graph needed + in the lock module call */ + + thr = que_fork_get_first_thr(que_node_get_parent(thr)); + que_thr_move_to_run_state_for_mysql(thr, trx); + +run_again: + thr->run_node = thr; + thr->prev_node = thr->common.parent; + + err = lock_table(0, table, mode, thr); + + trx->error_state = err; + + if (UNIV_LIKELY(err == DB_SUCCESS)) { + que_thr_stop_for_mysql_no_error(thr, trx); + } else { + que_thr_stop_for_mysql(thr); + + if (err != DB_QUE_THR_SUSPENDED) { + ibool was_lock_wait; + + was_lock_wait = row_mysql_handle_errors( + &err, trx, thr, NULL); + + if (was_lock_wait) { + goto run_again; + } + } else { + que_thr_t* run_thr; + que_node_t* parent; + + parent = que_node_get_parent(thr); + run_thr = que_fork_start_command(parent); + + ut_a(run_thr == thr); + + /* There was a lock wait but the thread was not + in a ready to run or running state. */ + trx->error_state = DB_LOCK_WAIT; + + goto run_again; + } + } + + que_graph_free(thr->graph); + trx->op_info = ""; + + return(err); +} + +/************************************************************************* +Drop an index from the InnoDB system tables. The data dictionary must +have been locked exclusively by the caller, because the transaction +will not be committed. */ +UNIV_INTERN +void +row_merge_drop_index( +/*=================*/ + dict_index_t* index, /* in: index to be removed */ + dict_table_t* table, /* in: table */ + trx_t* trx) /* in: transaction handle */ +{ + ulint err; + pars_info_t* info = pars_info_create(); + + /* We use the private SQL parser of Innobase to generate the + query graphs needed in deleting the dictionary data from system + tables in Innobase. Deleting a row from SYS_INDEXES table also + frees the file segments of the B-tree associated with the index. */ + + static const char str1[] = + "PROCEDURE DROP_INDEX_PROC () IS\n" + "BEGIN\n" + "DELETE FROM SYS_FIELDS WHERE INDEX_ID = :indexid;\n" + "DELETE FROM SYS_INDEXES WHERE ID = :indexid\n" + " AND TABLE_ID = :tableid;\n" + "END;\n"; + + ut_ad(index && table && trx); + + pars_info_add_dulint_literal(info, "indexid", index->id); + pars_info_add_dulint_literal(info, "tableid", table->id); + + trx_start_if_not_started(trx); + trx->op_info = "dropping index"; + + ut_a(trx->dict_operation_lock_mode == RW_X_LATCH); + + err = que_eval_sql(info, str1, FALSE, trx); + + ut_a(err == DB_SUCCESS); + + /* Replace this index with another equivalent index for all + foreign key constraints on this table where this index is used */ + + dict_table_replace_index_in_foreign_list(table, index); + dict_index_remove_from_cache(table, index); + + trx->op_info = ""; +} + +/************************************************************************* +Drop those indexes which were created before an error occurred when +building an index. The data dictionary must have been locked +exclusively by the caller, because the transaction will not be +committed. */ +UNIV_INTERN +void +row_merge_drop_indexes( +/*===================*/ + trx_t* trx, /* in: transaction */ + dict_table_t* table, /* in: table containing the indexes */ + dict_index_t** index, /* in: indexes to drop */ + ulint num_created) /* in: number of elements in index[] */ +{ + ulint key_num; + + for (key_num = 0; key_num < num_created; key_num++) { + row_merge_drop_index(index[key_num], table, trx); + } +} + +/************************************************************************* +Drop all partially created indexes during crash recovery. */ +UNIV_INTERN +void +row_merge_drop_temp_indexes(void) +/*=============================*/ +{ + trx_t* trx; + ulint err; + + /* We use the private SQL parser of Innobase to generate the + query graphs needed in deleting the dictionary data from system + tables in Innobase. Deleting a row from SYS_INDEXES table also + frees the file segments of the B-tree associated with the index. */ +#if TEMP_INDEX_PREFIX != '\377' +# error "TEMP_INDEX_PREFIX != '\377'" +#endif + static const char drop_temp_indexes[] = + "PROCEDURE DROP_TEMP_INDEXES_PROC () IS\n" + "indexid CHAR;\n" + "DECLARE CURSOR c IS SELECT ID FROM SYS_INDEXES\n" + "WHERE SUBSTR(NAME,0,1)='\377';\n" + "BEGIN\n" + "\tOPEN c;\n" + "\tWHILE 1=1 LOOP\n" + "\t\tFETCH c INTO indexid;\n" + "\t\tIF (SQL % NOTFOUND) THEN\n" + "\t\t\tEXIT;\n" + "\t\tEND IF;\n" + "\t\tDELETE FROM SYS_FIELDS WHERE INDEX_ID = indexid;\n" + "\t\tDELETE FROM SYS_INDEXES WHERE ID = indexid;\n" + "\tEND LOOP;\n" + "\tCLOSE c;\n" + "\tCOMMIT WORK;\n" + "END;\n"; + + trx = trx_allocate_for_background(); + trx->op_info = "dropping partially created indexes"; + row_mysql_lock_data_dictionary(trx); + + /* Incomplete transactions may be holding some locks on the + data dictionary tables. However, they should never have been + able to lock the records corresponding to the partially + created indexes that we are attempting to delete, because the + table was locked when the indexes were being created. We will + drop the partially created indexes before the rollback of + incomplete transactions is initiated. Thus, this should not + interfere with the incomplete transactions. */ + trx->isolation_level = TRX_ISO_READ_UNCOMMITTED; + err = que_eval_sql(NULL, drop_temp_indexes, FALSE, trx); + ut_a(err == DB_SUCCESS); + + row_mysql_unlock_data_dictionary(trx); + trx_free_for_background(trx); +} + +/************************************************************************* +Create a merge file. */ +static +void +row_merge_file_create( +/*==================*/ + merge_file_t* merge_file) /* out: merge file structure */ +{ + merge_file->fd = innobase_mysql_tmpfile(); + merge_file->offset = 0; +} + +/************************************************************************* +Destroy a merge file. */ +static +void +row_merge_file_destroy( +/*===================*/ + merge_file_t* merge_file) /* out: merge file structure */ +{ + if (merge_file->fd != -1) { + close(merge_file->fd); + merge_file->fd = -1; + } +} + +/************************************************************************* +Determine the precise type of a column that is added to a tem +if a column must be constrained NOT NULL. */ +UNIV_INLINE +ulint +row_merge_col_prtype( +/*=================*/ + /* out: col->prtype, possibly + ORed with DATA_NOT_NULL */ + const dict_col_t* col, /* in: column */ + const char* col_name, /* in: name of the column */ + const merge_index_def_t*index_def) /* in: the index definition + of the primary key */ +{ + ulint prtype = col->prtype; + ulint i; + + ut_ad(index_def->ind_type & DICT_CLUSTERED); + + if (prtype & DATA_NOT_NULL) { + + return(prtype); + } + + /* All columns that are included + in the PRIMARY KEY must be NOT NULL. */ + + for (i = 0; i < index_def->n_fields; i++) { + if (!strcmp(col_name, index_def->fields[i].field_name)) { + return(prtype | DATA_NOT_NULL); + } + } + + return(prtype); +} + +/************************************************************************* +Create a temporary table for creating a primary key, using the definition +of an existing table. */ +UNIV_INTERN +dict_table_t* +row_merge_create_temporary_table( +/*=============================*/ + /* out: table, + or NULL on error */ + const char* table_name, /* in: new table name */ + const merge_index_def_t*index_def, /* in: the index definition + of the primary key */ + const dict_table_t* table, /* in: old table definition */ + trx_t* trx) /* in/out: transaction + (sets error_state) */ +{ + ulint i; + dict_table_t* new_table = NULL; + ulint n_cols = dict_table_get_n_user_cols(table); + ulint error; + mem_heap_t* heap = mem_heap_create(1000); + + ut_ad(table_name); + ut_ad(index_def); + ut_ad(table); + ut_ad(mutex_own(&dict_sys->mutex)); + + new_table = dict_mem_table_create(table_name, 0, n_cols, table->flags); + + for (i = 0; i < n_cols; i++) { + const dict_col_t* col; + const char* col_name; + + col = dict_table_get_nth_col(table, i); + col_name = dict_table_get_col_name(table, i); + + dict_mem_table_add_col(new_table, heap, col_name, col->mtype, + row_merge_col_prtype(col, col_name, + index_def), + col->len); + } + + error = row_create_table_for_mysql(new_table, trx); + mem_heap_free(heap); + + if (error != DB_SUCCESS) { + trx->error_state = error; + new_table = NULL; + } + + return(new_table); +} + +/************************************************************************* +Rename the temporary indexes in the dictionary to permanent ones. The +data dictionary must have been locked exclusively by the caller, +because the transaction will not be committed. */ +UNIV_INTERN +ulint +row_merge_rename_indexes( +/*=====================*/ + /* out: DB_SUCCESS if all OK */ + trx_t* trx, /* in/out: transaction */ + dict_table_t* table) /* in/out: table with new indexes */ +{ + ulint err = DB_SUCCESS; + pars_info_t* info = pars_info_create(); + + /* We use the private SQL parser of Innobase to generate the + query graphs needed in renaming indexes. */ + +#if TEMP_INDEX_PREFIX != '\377' +# error "TEMP_INDEX_PREFIX != '\377'" +#endif + + static const char rename_indexes[] = + "PROCEDURE RENAME_INDEXES_PROC () IS\n" + "BEGIN\n" + "UPDATE SYS_INDEXES SET NAME=SUBSTR(NAME,1,LENGTH(NAME)-1)\n" + "WHERE TABLE_ID = :tableid AND SUBSTR(NAME,0,1)='\377';\n" + "END;\n"; + + ut_ad(table); + ut_ad(trx); + ut_a(trx->dict_operation_lock_mode == RW_X_LATCH); + + trx->op_info = "renaming indexes"; + + pars_info_add_dulint_literal(info, "tableid", table->id); + + err = que_eval_sql(info, rename_indexes, FALSE, trx); + + if (err == DB_SUCCESS) { + dict_index_t* index = dict_table_get_first_index(table); + do { + if (*index->name == TEMP_INDEX_PREFIX) { + index->name++; + } + index = dict_table_get_next_index(index); + } while (index); + } + + trx->op_info = ""; + + return(err); +} + +/************************************************************************* +Rename the tables in the data dictionary. The data dictionary must +have been locked exclusively by the caller, because the transaction +will not be committed. */ +UNIV_INTERN +ulint +row_merge_rename_tables( +/*====================*/ + /* out: error code or DB_SUCCESS */ + dict_table_t* old_table, /* in/out: old table, renamed to + tmp_name */ + dict_table_t* new_table, /* in/out: new table, renamed to + old_table->name */ + const char* tmp_name, /* in: new name for old_table */ + trx_t* trx) /* in: transaction handle */ +{ + ulint err = DB_ERROR; + pars_info_t* info; + const char* old_name= old_table->name; + + ut_ad(trx->mysql_thread_id == os_thread_get_curr_id()); + ut_ad(old_table != new_table); + ut_ad(mutex_own(&dict_sys->mutex)); + + ut_a(trx->dict_operation_lock_mode == RW_X_LATCH); + + trx->op_info = "renaming tables"; + + /* We use the private SQL parser of Innobase to generate the query + graphs needed in updating the dictionary data in system tables. */ + + info = pars_info_create(); + + pars_info_add_str_literal(info, "new_name", new_table->name); + pars_info_add_str_literal(info, "old_name", old_name); + pars_info_add_str_literal(info, "tmp_name", tmp_name); + + err = que_eval_sql(info, + "PROCEDURE RENAME_TABLES () IS\n" + "BEGIN\n" + "UPDATE SYS_TABLES SET NAME = :tmp_name\n" + " WHERE NAME = :old_name;\n" + "UPDATE SYS_TABLES SET NAME = :old_name\n" + " WHERE NAME = :new_name;\n" + "END;\n", FALSE, trx); + + if (err != DB_SUCCESS) { + + goto err_exit; + } + + /* The following calls will also rename the .ibd data files if + the tables are stored in a single-table tablespace */ + + if (!dict_table_rename_in_cache(old_table, tmp_name, FALSE) + || !dict_table_rename_in_cache(new_table, old_name, FALSE)) { + + err = DB_ERROR; + goto err_exit; + } + + err = dict_load_foreigns(old_name, TRUE); + + if (err != DB_SUCCESS) { +err_exit: + trx->error_state = DB_SUCCESS; + trx_general_rollback_for_mysql(trx, FALSE, NULL); + trx->error_state = DB_SUCCESS; + } + + trx->op_info = ""; + + return(err); +} + +/************************************************************************* +Create and execute a query graph for creating an index. */ +static +ulint +row_merge_create_index_graph( +/*=========================*/ + /* out: DB_SUCCESS or error code */ + trx_t* trx, /* in: trx */ + dict_table_t* table, /* in: table */ + dict_index_t* index) /* in: index */ +{ + ind_node_t* node; /* Index creation node */ + mem_heap_t* heap; /* Memory heap */ + que_thr_t* thr; /* Query thread */ + ulint err; + + ut_ad(trx); + ut_ad(table); + ut_ad(index); + + heap = mem_heap_create(512); + + index->table = table; + node = ind_create_graph_create(index, heap); + thr = pars_complete_graph_for_exec(node, trx, heap); + + ut_a(thr == que_fork_start_command(que_node_get_parent(thr))); + + que_run_threads(thr); + + err = trx->error_state; + + que_graph_free((que_t*) que_node_get_parent(thr)); + + return(err); +} + +/************************************************************************* +Create the index and load in to the dictionary. */ +UNIV_INTERN +dict_index_t* +row_merge_create_index( +/*===================*/ + /* out: index, or NULL on error */ + trx_t* trx, /* in/out: trx (sets error_state) */ + dict_table_t* table, /* in: the index is on this table */ + const merge_index_def_t* /* in: the index definition */ + index_def) +{ + dict_index_t* index; + ulint err; + ulint n_fields = index_def->n_fields; + ulint i; + + /* Create the index prototype, using the passed in def, this is not + a persistent operation. We pass 0 as the space id, and determine at + a lower level the space id where to store the table. */ + + index = dict_mem_index_create(table->name, index_def->name, + 0, index_def->ind_type, n_fields); + + ut_a(index); + + for (i = 0; i < n_fields; i++) { + merge_index_field_t* ifield = &index_def->fields[i]; + + dict_mem_index_add_field(index, ifield->field_name, + ifield->prefix_len); + } + + /* Add the index to SYS_INDEXES, using the index prototype. */ + err = row_merge_create_index_graph(trx, table, index); + + if (err == DB_SUCCESS) { + + index = row_merge_dict_table_get_index( + table, index_def); + + ut_a(index); + +#ifdef ROW_MERGE_IS_INDEX_USABLE + /* Note the id of the transaction that created this + index, we use it to restrict readers from accessing + this index, to ensure read consistency. */ + index->trx_id = trx->id; +#endif /* ROW_MERGE_IS_INDEX_USABLE */ + } else { + index = NULL; + } + + return(index); +} + +#ifdef ROW_MERGE_IS_INDEX_USABLE +/************************************************************************* +Check if a transaction can use an index. */ +UNIV_INTERN +ibool +row_merge_is_index_usable( +/*======================*/ + const trx_t* trx, /* in: transaction */ + const dict_index_t* index) /* in: index to check */ +{ + if (!trx->read_view) { + return(TRUE); + } + + return(ut_dulint_cmp(index->trx_id, trx->read_view->low_limit_id) < 0); +} +#endif /* ROW_MERGE_IS_INDEX_USABLE */ + +/************************************************************************* +Drop the old table. */ +UNIV_INTERN +ulint +row_merge_drop_table( +/*=================*/ + /* out: DB_SUCCESS or error code */ + trx_t* trx, /* in: transaction */ + dict_table_t* table) /* in: table to drop */ +{ + /* There must be no open transactions on the table. */ + ut_a(table->n_mysql_handles_opened == 0); + + return(row_drop_table_for_mysql(table->name, trx, FALSE)); +} + +/************************************************************************* +Build indexes on a table by reading a clustered index, +creating a temporary file containing index entries, merge sorting +these index entries and inserting sorted index entries to indexes. */ +UNIV_INTERN +ulint +row_merge_build_indexes( +/*====================*/ + /* out: DB_SUCCESS or error code */ + trx_t* trx, /* in: transaction */ + dict_table_t* old_table, /* in: table where rows are + read from */ + dict_table_t* new_table, /* in: table where indexes are + created; identical to old_table + unless creating a PRIMARY KEY */ + dict_index_t** indexes, /* in: indexes to be created */ + ulint n_indexes, /* in: size of indexes[] */ + TABLE* table) /* in/out: MySQL table, for + reporting erroneous key value + if applicable */ +{ + merge_file_t* merge_files; + row_merge_block_t* block; + ulint block_size; + ulint i; + ulint error; + int tmpfd; + + ut_ad(trx); + ut_ad(old_table); + ut_ad(new_table); + ut_ad(indexes); + ut_ad(n_indexes); + + trx_start_if_not_started(trx); + + /* Allocate memory for merge file data structure and initialize + fields */ + + merge_files = mem_alloc(n_indexes * sizeof *merge_files); + block_size = 3 * sizeof *block; + block = os_mem_alloc_large(&block_size); + + for (i = 0; i < n_indexes; i++) { + + row_merge_file_create(&merge_files[i]); + } + + tmpfd = innobase_mysql_tmpfile(); + + /* Reset the MySQL row buffer that is used when reporting + duplicate keys. */ + innobase_rec_reset(table); + + /* Read clustered index of the table and create files for + secondary index entries for merge sort */ + + error = row_merge_read_clustered_index( + trx, table, old_table, new_table, indexes, + merge_files, n_indexes, block); + + if (error != DB_SUCCESS) { + + goto func_exit; + } + + /* Now we have files containing index entries ready for + sorting and inserting. */ + + for (i = 0; i < n_indexes; i++) { + error = row_merge_sort(indexes[i], &merge_files[i], + block, &tmpfd, table); + + if (error == DB_SUCCESS) { + error = row_merge_insert_index_tuples( + trx, indexes[i], new_table, + dict_table_zip_size(old_table), + merge_files[i].fd, block); + } + + /* Close the temporary file to free up space. */ + row_merge_file_destroy(&merge_files[i]); + + if (error != DB_SUCCESS) { + trx->error_key_num = i; + goto func_exit; + } + } + +func_exit: + close(tmpfd); + + for (i = 0; i < n_indexes; i++) { + row_merge_file_destroy(&merge_files[i]); + } + + mem_free(merge_files); + os_mem_free_large(block, block_size); + + return(error); +} === added file 'storage/xtradb/row/row0mysql.c' --- a/storage/xtradb/row/row0mysql.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/row/row0mysql.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,4209 @@ +/***************************************************************************** + +Copyright (c) 2000, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Interface between Innobase row operations and MySQL. +Contains also create table and other data dictionary operations. + +Created 9/17/2000 Heikki Tuuri +*******************************************************/ + +#include "row0mysql.h" + +#ifdef UNIV_NONINL +#include "row0mysql.ic" +#endif + +#include "row0ins.h" +#include "row0sel.h" +#include "row0upd.h" +#include "row0row.h" +#include "que0que.h" +#include "pars0pars.h" +#include "dict0dict.h" +#include "dict0crea.h" +#include "dict0load.h" +#include "dict0boot.h" +#include "trx0roll.h" +#include "trx0purge.h" +#include "trx0rec.h" +#include "trx0undo.h" +#include "lock0lock.h" +#include "rem0cmp.h" +#include "log0log.h" +#include "btr0sea.h" +#include "fil0fil.h" +#include "ibuf0ibuf.h" + +/* Provide optional 4.x backwards compatibility for 5.0 and above */ +UNIV_INTERN ibool row_rollback_on_timeout = FALSE; + +/* List of tables we should drop in background. ALTER TABLE in MySQL requires +that the table handler can drop the table in background when there are no +queries to it any more. Protected by the kernel mutex. */ +typedef struct row_mysql_drop_struct row_mysql_drop_t; +struct row_mysql_drop_struct{ + char* table_name; + UT_LIST_NODE_T(row_mysql_drop_t) row_mysql_drop_list; +}; + +static UT_LIST_BASE_NODE_T(row_mysql_drop_t) row_mysql_drop_list; +static ibool row_mysql_drop_list_inited = FALSE; + +/* Magic table names for invoking various monitor threads */ +static const char S_innodb_monitor[] = "innodb_monitor"; +static const char S_innodb_lock_monitor[] = "innodb_lock_monitor"; +static const char S_innodb_tablespace_monitor[] = "innodb_tablespace_monitor"; +static const char S_innodb_table_monitor[] = "innodb_table_monitor"; +static const char S_innodb_mem_validate[] = "innodb_mem_validate"; + +/* Evaluates to true if str1 equals str2_onstack, used for comparing +the above strings. */ +#define STR_EQ(str1, str1_len, str2_onstack) \ + ((str1_len) == sizeof(str2_onstack) \ + && memcmp(str1, str2_onstack, sizeof(str2_onstack)) == 0) + +#ifndef UNIV_HOTBACKUP +/*********************************************************************** +Determine if the given name is a name reserved for MySQL system tables. */ +static +ibool +row_mysql_is_system_table( +/*======================*/ + /* out: TRUE if name is a MySQL + system table name */ + const char* name) +{ + if (strncmp(name, "mysql/", 6) != 0) { + + return(FALSE); + } + + return(0 == strcmp(name + 6, "host") + || 0 == strcmp(name + 6, "user") + || 0 == strcmp(name + 6, "db")); +} +#endif /* !UNIV_HOTBACKUP */ + +/************************************************************************* +If a table is not yet in the drop list, adds the table to the list of tables +which the master thread drops in background. We need this on Unix because in +ALTER TABLE MySQL may call drop table even if the table has running queries on +it. Also, if there are running foreign key checks on the table, we drop the +table lazily. */ +static +ibool +row_add_table_to_background_drop_list( +/*==================================*/ + /* out: TRUE if the table was not yet in the + drop list, and was added there */ + const char* name); /* in: table name */ + +/*********************************************************************** +Delays an INSERT, DELETE or UPDATE operation if the purge is lagging. */ +static +void +row_mysql_delay_if_needed(void) +/*===========================*/ +{ + if (srv_dml_needed_delay) { + os_thread_sleep(srv_dml_needed_delay); + } +} + +/*********************************************************************** +Frees the blob heap in prebuilt when no longer needed. */ +UNIV_INTERN +void +row_mysql_prebuilt_free_blob_heap( +/*==============================*/ + row_prebuilt_t* prebuilt) /* in: prebuilt struct of a + ha_innobase:: table handle */ +{ + mem_heap_free(prebuilt->blob_heap); + prebuilt->blob_heap = NULL; +} + +/*********************************************************************** +Stores a >= 5.0.3 format true VARCHAR length to dest, in the MySQL row +format. */ +UNIV_INTERN +byte* +row_mysql_store_true_var_len( +/*=========================*/ + /* out: pointer to the data, we skip the 1 or 2 bytes + at the start that are used to store the len */ + byte* dest, /* in: where to store */ + ulint len, /* in: length, must fit in two bytes */ + ulint lenlen) /* in: storage length of len: either 1 or 2 bytes */ +{ + if (lenlen == 2) { + ut_a(len < 256 * 256); + + mach_write_to_2_little_endian(dest, len); + + return(dest + 2); + } + + ut_a(lenlen == 1); + ut_a(len < 256); + + mach_write_to_1(dest, len); + + return(dest + 1); +} + +/*********************************************************************** +Reads a >= 5.0.3 format true VARCHAR length, in the MySQL row format, and +returns a pointer to the data. */ +UNIV_INTERN +const byte* +row_mysql_read_true_varchar( +/*========================*/ + /* out: pointer to the data, we skip + the 1 or 2 bytes at the start that are + used to store the len */ + ulint* len, /* out: variable-length field length */ + const byte* field, /* in: field in the MySQL format */ + ulint lenlen) /* in: storage length of len: either 1 + or 2 bytes */ +{ + if (lenlen == 2) { + *len = mach_read_from_2_little_endian(field); + + return(field + 2); + } + + ut_a(lenlen == 1); + + *len = mach_read_from_1(field); + + return(field + 1); +} + +/*********************************************************************** +Stores a reference to a BLOB in the MySQL format. */ +UNIV_INTERN +void +row_mysql_store_blob_ref( +/*=====================*/ + byte* dest, /* in: where to store */ + ulint col_len,/* in: dest buffer size: determines into + how many bytes the BLOB length is stored, + the space for the length may vary from 1 + to 4 bytes */ + const void* data, /* in: BLOB data; if the value to store + is SQL NULL this should be NULL pointer */ + ulint len) /* in: BLOB length; if the value to store + is SQL NULL this should be 0; remember + also to set the NULL bit in the MySQL record + header! */ +{ + /* MySQL might assume the field is set to zero except the length and + the pointer fields */ + + memset(dest, '\0', col_len); + + /* In dest there are 1 - 4 bytes reserved for the BLOB length, + and after that 8 bytes reserved for the pointer to the data. + In 32-bit architectures we only use the first 4 bytes of the pointer + slot. */ + + ut_a(col_len - 8 > 1 || len < 256); + ut_a(col_len - 8 > 2 || len < 256 * 256); + ut_a(col_len - 8 > 3 || len < 256 * 256 * 256); + + mach_write_to_n_little_endian(dest, col_len - 8, len); + + memcpy(dest + col_len - 8, &data, sizeof data); +} + +/*********************************************************************** +Reads a reference to a BLOB in the MySQL format. */ +UNIV_INTERN +const byte* +row_mysql_read_blob_ref( +/*====================*/ + /* out: pointer to BLOB data */ + ulint* len, /* out: BLOB length */ + const byte* ref, /* in: BLOB reference in the + MySQL format */ + ulint col_len) /* in: BLOB reference length + (not BLOB length) */ +{ + byte* data; + + *len = mach_read_from_n_little_endian(ref, col_len - 8); + + memcpy(&data, ref + col_len - 8, sizeof data); + + return(data); +} + +/****************************************************************** +Stores a non-SQL-NULL field given in the MySQL format in the InnoDB format. +The counterpart of this function is row_sel_field_store_in_mysql_format() in +row0sel.c. */ +UNIV_INTERN +byte* +row_mysql_store_col_in_innobase_format( +/*===================================*/ + /* out: up to which byte we used + buf in the conversion */ + dfield_t* dfield, /* in/out: dfield where dtype + information must be already set when + this function is called! */ + byte* buf, /* in/out: buffer for a converted + integer value; this must be at least + col_len long then! */ + ibool row_format_col, /* TRUE if the mysql_data is from + a MySQL row, FALSE if from a MySQL + key value; + in MySQL, a true VARCHAR storage + format differs in a row and in a + key value: in a key value the length + is always stored in 2 bytes! */ + const byte* mysql_data, /* in: MySQL column value, not + SQL NULL; NOTE that dfield may also + get a pointer to mysql_data, + therefore do not discard this as long + as dfield is used! */ + ulint col_len, /* in: MySQL column length; NOTE that + this is the storage length of the + column in the MySQL format row, not + necessarily the length of the actual + payload data; if the column is a true + VARCHAR then this is irrelevant */ + ulint comp) /* in: nonzero=compact format */ +{ + const byte* ptr = mysql_data; + const dtype_t* dtype; + ulint type; + ulint lenlen; + + dtype = dfield_get_type(dfield); + + type = dtype->mtype; + + if (type == DATA_INT) { + /* Store integer data in Innobase in a big-endian format, + sign bit negated if the data is a signed integer. In MySQL, + integers are stored in a little-endian format. */ + + byte* p = buf + col_len; + + for (;;) { + p--; + *p = *mysql_data; + if (p == buf) { + break; + } + mysql_data++; + } + + if (!(dtype->prtype & DATA_UNSIGNED)) { + + *buf ^= 128; + } + + ptr = buf; + buf += col_len; + } else if ((type == DATA_VARCHAR + || type == DATA_VARMYSQL + || type == DATA_BINARY)) { + + if (dtype_get_mysql_type(dtype) == DATA_MYSQL_TRUE_VARCHAR) { + /* The length of the actual data is stored to 1 or 2 + bytes at the start of the field */ + + if (row_format_col) { + if (dtype->prtype & DATA_LONG_TRUE_VARCHAR) { + lenlen = 2; + } else { + lenlen = 1; + } + } else { + /* In a MySQL key value, lenlen is always 2 */ + lenlen = 2; + } + + ptr = row_mysql_read_true_varchar(&col_len, mysql_data, + lenlen); + } else { + /* Remove trailing spaces from old style VARCHAR + columns. */ + + /* Handle UCS2 strings differently. */ + ulint mbminlen = dtype_get_mbminlen(dtype); + + ptr = mysql_data; + + if (mbminlen == 2) { + /* space=0x0020 */ + /* Trim "half-chars", just in case. */ + col_len &= ~1; + + while (col_len >= 2 && ptr[col_len - 2] == 0x00 + && ptr[col_len - 1] == 0x20) { + col_len -= 2; + } + } else { + ut_a(mbminlen == 1); + /* space=0x20 */ + while (col_len > 0 + && ptr[col_len - 1] == 0x20) { + col_len--; + } + } + } + } else if (comp && type == DATA_MYSQL + && dtype_get_mbminlen(dtype) == 1 + && dtype_get_mbmaxlen(dtype) > 1) { + /* In some cases we strip trailing spaces from UTF-8 and other + multibyte charsets, from FIXED-length CHAR columns, to save + space. UTF-8 would otherwise normally use 3 * the string length + bytes to store an ASCII string! */ + + /* We assume that this CHAR field is encoded in a + variable-length character set where spaces have + 1:1 correspondence to 0x20 bytes, such as UTF-8. + + Consider a CHAR(n) field, a field of n characters. + It will contain between n * mbminlen and n * mbmaxlen bytes. + We will try to truncate it to n bytes by stripping + space padding. If the field contains single-byte + characters only, it will be truncated to n characters. + Consider a CHAR(5) field containing the string ".a " + where "." denotes a 3-byte character represented by + the bytes "$%&". After our stripping, the string will + be stored as "$%&a " (5 bytes). The string ".abc " + will be stored as "$%&abc" (6 bytes). + + The space padding will be restored in row0sel.c, function + row_sel_field_store_in_mysql_format(). */ + + ulint n_chars; + + ut_a(!(dtype_get_len(dtype) % dtype_get_mbmaxlen(dtype))); + + n_chars = dtype_get_len(dtype) / dtype_get_mbmaxlen(dtype); + + /* Strip space padding. */ + while (col_len > n_chars && ptr[col_len - 1] == 0x20) { + col_len--; + } + } else if (type == DATA_BLOB && row_format_col) { + + ptr = row_mysql_read_blob_ref(&col_len, mysql_data, col_len); + } + + dfield_set_data(dfield, ptr, col_len); + + return(buf); +} + +/****************************************************************** +Convert a row in the MySQL format to a row in the Innobase format. Note that +the function to convert a MySQL format key value to an InnoDB dtuple is +row_sel_convert_mysql_key_to_innobase() in row0sel.c. */ +static +void +row_mysql_convert_row_to_innobase( +/*==============================*/ + dtuple_t* row, /* in/out: Innobase row where the + field type information is already + copied there! */ + row_prebuilt_t* prebuilt, /* in: prebuilt struct where template + must be of type ROW_MYSQL_WHOLE_ROW */ + byte* mysql_rec) /* in: row in the MySQL format; + NOTE: do not discard as long as + row is used, as row may contain + pointers to this record! */ +{ + mysql_row_templ_t* templ; + dfield_t* dfield; + ulint i; + + ut_ad(prebuilt->template_type == ROW_MYSQL_WHOLE_ROW); + ut_ad(prebuilt->mysql_template); + + for (i = 0; i < prebuilt->n_template; i++) { + + templ = prebuilt->mysql_template + i; + dfield = dtuple_get_nth_field(row, i); + + if (templ->mysql_null_bit_mask != 0) { + /* Column may be SQL NULL */ + + if (mysql_rec[templ->mysql_null_byte_offset] + & (byte) (templ->mysql_null_bit_mask)) { + + /* It is SQL NULL */ + + dfield_set_null(dfield); + + goto next_column; + } + } + + row_mysql_store_col_in_innobase_format( + dfield, + prebuilt->ins_upd_rec_buff + templ->mysql_col_offset, + TRUE, /* MySQL row format data */ + mysql_rec + templ->mysql_col_offset, + templ->mysql_col_len, + dict_table_is_comp(prebuilt->table)); +next_column: + ; + } +} + +/******************************************************************** +Handles user errors and lock waits detected by the database engine. */ +UNIV_INTERN +ibool +row_mysql_handle_errors( +/*====================*/ + /* out: TRUE if it was a lock wait and + we should continue running the query thread */ + ulint* new_err,/* out: possible new error encountered in + lock wait, or if no new error, the value + of trx->error_state at the entry of this + function */ + trx_t* trx, /* in: transaction */ + que_thr_t* thr, /* in: query thread */ + trx_savept_t* savept) /* in: savepoint or NULL */ +{ +#ifndef UNIV_HOTBACKUP + ulint err; + +handle_new_error: + err = trx->error_state; + + ut_a(err != DB_SUCCESS); + + trx->error_state = DB_SUCCESS; + + switch (err) { + case DB_LOCK_WAIT_TIMEOUT: + if (row_rollback_on_timeout) { + trx_general_rollback_for_mysql(trx, FALSE, NULL); + break; + } + /* fall through */ + case DB_DUPLICATE_KEY: + case DB_FOREIGN_DUPLICATE_KEY: + case DB_TOO_BIG_RECORD: + case DB_ROW_IS_REFERENCED: + case DB_NO_REFERENCED_ROW: + case DB_CANNOT_ADD_CONSTRAINT: + case DB_TOO_MANY_CONCURRENT_TRXS: + case DB_OUT_OF_FILE_SPACE: + if (savept) { + /* Roll back the latest, possibly incomplete + insertion or update */ + + trx_general_rollback_for_mysql(trx, TRUE, savept); + } + /* MySQL will roll back the latest SQL statement */ + break; + case DB_LOCK_WAIT: + srv_suspend_mysql_thread(thr); + + if (trx->error_state != DB_SUCCESS) { + que_thr_stop_for_mysql(thr); + + goto handle_new_error; + } + + *new_err = err; + + return(TRUE); + + case DB_DEADLOCK: + case DB_LOCK_TABLE_FULL: + /* Roll back the whole transaction; this resolution was added + to version 3.23.43 */ + + trx_general_rollback_for_mysql(trx, FALSE, NULL); + break; + + case DB_MUST_GET_MORE_FILE_SPACE: + fputs("InnoDB: The database cannot continue" + " operation because of\n" + "InnoDB: lack of space. You must add" + " a new data file to\n" + "InnoDB: my.cnf and restart the database.\n", stderr); + + exit(1); + + case DB_CORRUPTION: + fputs("InnoDB: We detected index corruption" + " in an InnoDB type table.\n" + "InnoDB: You have to dump + drop + reimport" + " the table or, in\n" + "InnoDB: a case of widespread corruption," + " dump all InnoDB\n" + "InnoDB: tables and recreate the" + " whole InnoDB tablespace.\n" + "InnoDB: If the mysqld server crashes" + " after the startup or when\n" + "InnoDB: you dump the tables, look at\n" + "InnoDB: http://dev.mysql.com/doc/refman/5.1/en/" + "forcing-recovery.html" + " for help.\n", stderr); + break; + default: + fprintf(stderr, "InnoDB: unknown error code %lu\n", + (ulong) err); + ut_error; + } + + if (trx->error_state != DB_SUCCESS) { + *new_err = trx->error_state; + } else { + *new_err = err; + } + + trx->error_state = DB_SUCCESS; + + return(FALSE); +#else /* UNIV_HOTBACKUP */ + /* This function depends on MySQL code that is not included in + InnoDB Hot Backup builds. Besides, this function should never + be called in InnoDB Hot Backup. */ + ut_error; + return(FALSE); +#endif /* UNIV_HOTBACKUP */ +} + +/************************************************************************ +Create a prebuilt struct for a MySQL table handle. */ +UNIV_INTERN +row_prebuilt_t* +row_create_prebuilt( +/*================*/ + /* out, own: a prebuilt struct */ + dict_table_t* table) /* in: Innobase table handle */ +{ + row_prebuilt_t* prebuilt; + mem_heap_t* heap; + dict_index_t* clust_index; + dtuple_t* ref; + ulint ref_len; + + heap = mem_heap_create(sizeof *prebuilt + 128); + + prebuilt = mem_heap_zalloc(heap, sizeof *prebuilt); + + prebuilt->magic_n = ROW_PREBUILT_ALLOCATED; + prebuilt->magic_n2 = ROW_PREBUILT_ALLOCATED; + + prebuilt->table = table; + + prebuilt->sql_stat_start = TRUE; + prebuilt->heap = heap; + + prebuilt->pcur = btr_pcur_create_for_mysql(); + prebuilt->clust_pcur = btr_pcur_create_for_mysql(); + + prebuilt->select_lock_type = LOCK_NONE; + prebuilt->stored_select_lock_type = 99999999; + + prebuilt->search_tuple = dtuple_create( + heap, 2 * dict_table_get_n_cols(table)); + + clust_index = dict_table_get_first_index(table); + + /* Make sure that search_tuple is long enough for clustered index */ + ut_a(2 * dict_table_get_n_cols(table) >= clust_index->n_fields); + + ref_len = dict_index_get_n_unique(clust_index); + + ref = dtuple_create(heap, ref_len); + + dict_index_copy_types(ref, clust_index, ref_len); + + prebuilt->clust_ref = ref; + + prebuilt->autoinc_error = 0; + prebuilt->autoinc_offset = 0; + + /* Default to 1, we will set the actual value later in + ha_innobase::get_auto_increment(). */ + prebuilt->autoinc_increment = 1; + + prebuilt->autoinc_last_value = 0; + + return(prebuilt); +} + +/************************************************************************ +Free a prebuilt struct for a MySQL table handle. */ +UNIV_INTERN +void +row_prebuilt_free( +/*==============*/ + row_prebuilt_t* prebuilt, /* in, own: prebuilt struct */ + ibool dict_locked) /* in: TRUE=data dictionary locked */ +{ + ulint i; + + if (UNIV_UNLIKELY + (prebuilt->magic_n != ROW_PREBUILT_ALLOCATED + || prebuilt->magic_n2 != ROW_PREBUILT_ALLOCATED)) { + + fprintf(stderr, + "InnoDB: Error: trying to free a corrupt\n" + "InnoDB: table handle. Magic n %lu," + " magic n2 %lu, table name ", + (ulong) prebuilt->magic_n, + (ulong) prebuilt->magic_n2); + ut_print_name(stderr, NULL, TRUE, prebuilt->table->name); + putc('\n', stderr); + + mem_analyze_corruption(prebuilt); + + ut_error; + } + + prebuilt->magic_n = ROW_PREBUILT_FREED; + prebuilt->magic_n2 = ROW_PREBUILT_FREED; + + btr_pcur_free_for_mysql(prebuilt->pcur); + btr_pcur_free_for_mysql(prebuilt->clust_pcur); + + if (prebuilt->mysql_template) { + mem_free(prebuilt->mysql_template); + } + + if (prebuilt->ins_graph) { + que_graph_free_recursive(prebuilt->ins_graph); + } + + if (prebuilt->sel_graph) { + que_graph_free_recursive(prebuilt->sel_graph); + } + + if (prebuilt->upd_graph) { + que_graph_free_recursive(prebuilt->upd_graph); + } + + if (prebuilt->blob_heap) { + mem_heap_free(prebuilt->blob_heap); + } + + if (prebuilt->old_vers_heap) { + mem_heap_free(prebuilt->old_vers_heap); + } + + for (i = 0; i < MYSQL_FETCH_CACHE_SIZE; i++) { + if (prebuilt->fetch_cache[i] != NULL) { + + if ((ROW_PREBUILT_FETCH_MAGIC_N != mach_read_from_4( + (prebuilt->fetch_cache[i]) - 4)) + || (ROW_PREBUILT_FETCH_MAGIC_N != mach_read_from_4( + (prebuilt->fetch_cache[i]) + + prebuilt->mysql_row_len))) { + fputs("InnoDB: Error: trying to free" + " a corrupt fetch buffer.\n", stderr); + + mem_analyze_corruption( + prebuilt->fetch_cache[i]); + + ut_error; + } + + mem_free((prebuilt->fetch_cache[i]) - 4); + } + } + + dict_table_decrement_handle_count(prebuilt->table, dict_locked); + + mem_heap_free(prebuilt->heap); +} + +/************************************************************************* +Updates the transaction pointers in query graphs stored in the prebuilt +struct. */ +UNIV_INTERN +void +row_update_prebuilt_trx( +/*====================*/ + /* out: prebuilt dtuple */ + row_prebuilt_t* prebuilt, /* in: prebuilt struct in MySQL + handle */ + trx_t* trx) /* in: transaction handle */ +{ + if (trx->magic_n != TRX_MAGIC_N) { + fprintf(stderr, + "InnoDB: Error: trying to use a corrupt\n" + "InnoDB: trx handle. Magic n %lu\n", + (ulong) trx->magic_n); + + mem_analyze_corruption(trx); + + ut_error; + } + + if (prebuilt->magic_n != ROW_PREBUILT_ALLOCATED) { + fprintf(stderr, + "InnoDB: Error: trying to use a corrupt\n" + "InnoDB: table handle. Magic n %lu, table name ", + (ulong) prebuilt->magic_n); + ut_print_name(stderr, trx, TRUE, prebuilt->table->name); + putc('\n', stderr); + + mem_analyze_corruption(prebuilt); + + ut_error; + } + + prebuilt->trx = trx; + + if (prebuilt->ins_graph) { + prebuilt->ins_graph->trx = trx; + } + + if (prebuilt->upd_graph) { + prebuilt->upd_graph->trx = trx; + } + + if (prebuilt->sel_graph) { + prebuilt->sel_graph->trx = trx; + } +} + +/************************************************************************* +Gets pointer to a prebuilt dtuple used in insertions. If the insert graph +has not yet been built in the prebuilt struct, then this function first +builds it. */ +static +dtuple_t* +row_get_prebuilt_insert_row( +/*========================*/ + /* out: prebuilt dtuple; the column + type information is also set in it */ + row_prebuilt_t* prebuilt) /* in: prebuilt struct in MySQL + handle */ +{ + ins_node_t* node; + dtuple_t* row; + dict_table_t* table = prebuilt->table; + + ut_ad(prebuilt && table && prebuilt->trx); + + if (prebuilt->ins_node == NULL) { + + /* Not called before for this handle: create an insert node + and query graph to the prebuilt struct */ + + node = ins_node_create(INS_DIRECT, table, prebuilt->heap); + + prebuilt->ins_node = node; + + if (prebuilt->ins_upd_rec_buff == NULL) { + prebuilt->ins_upd_rec_buff = mem_heap_alloc( + prebuilt->heap, prebuilt->mysql_row_len); + } + + row = dtuple_create(prebuilt->heap, + dict_table_get_n_cols(table)); + + dict_table_copy_types(row, table); + + ins_node_set_new_row(node, row); + + prebuilt->ins_graph = que_node_get_parent( + pars_complete_graph_for_exec(node, + prebuilt->trx, + prebuilt->heap)); + prebuilt->ins_graph->state = QUE_FORK_ACTIVE; + } + + return(prebuilt->ins_node->row); +} + +/************************************************************************* +Updates the table modification counter and calculates new estimates +for table and index statistics if necessary. */ +UNIV_INLINE +void +row_update_statistics_if_needed( +/*============================*/ + dict_table_t* table) /* in: table */ +{ + ulint counter; + + counter = table->stat_modified_counter; + + table->stat_modified_counter = counter + 1; + + /* Calculate new statistics if 1 / 16 of table has been modified + since the last time a statistics batch was run, or if + stat_modified_counter > 2 000 000 000 (to avoid wrap-around). + We calculate statistics at most every 16th round, since we may have + a counter table which is very small and updated very often. */ + + if (counter > 2000000000 + || ((ib_int64_t)counter > 16 + table->stat_n_rows / 16)) { + + dict_update_statistics(table); + } +} + +/************************************************************************* +Unlocks AUTO_INC type locks that were possibly reserved by a trx. */ +UNIV_INTERN +void +row_unlock_table_autoinc_for_mysql( +/*===============================*/ + trx_t* trx) /* in/out: transaction */ +{ + mutex_enter(&kernel_mutex); + + lock_release_autoinc_locks(trx); + + mutex_exit(&kernel_mutex); +} + +/************************************************************************* +Sets an AUTO_INC type lock on the table mentioned in prebuilt. The +AUTO_INC lock gives exclusive access to the auto-inc counter of the +table. The lock is reserved only for the duration of an SQL statement. +It is not compatible with another AUTO_INC or exclusive lock on the +table. */ +UNIV_INTERN +int +row_lock_table_autoinc_for_mysql( +/*=============================*/ + /* out: error code or DB_SUCCESS */ + row_prebuilt_t* prebuilt) /* in: prebuilt struct in the MySQL + table handle */ +{ + trx_t* trx = prebuilt->trx; + ins_node_t* node = prebuilt->ins_node; + const dict_table_t* table = prebuilt->table; + que_thr_t* thr; + ulint err; + ibool was_lock_wait; + + ut_ad(trx); + ut_ad(trx->mysql_thread_id == os_thread_get_curr_id()); + + /* If we already hold an AUTOINC lock on the table then do nothing. + Note: We peek at the value of the current owner without acquiring + the kernel mutex. **/ + if (trx == table->autoinc_trx) { + + return(DB_SUCCESS); + } + + trx->op_info = "setting auto-inc lock"; + + if (node == NULL) { + row_get_prebuilt_insert_row(prebuilt); + node = prebuilt->ins_node; + } + + /* We use the insert query graph as the dummy graph needed + in the lock module call */ + + thr = que_fork_get_first_thr(prebuilt->ins_graph); + + que_thr_move_to_run_state_for_mysql(thr, trx); + +run_again: + thr->run_node = node; + thr->prev_node = node; + + /* It may be that the current session has not yet started + its transaction, or it has been committed: */ + + trx_start_if_not_started(trx); + + err = lock_table(0, prebuilt->table, LOCK_AUTO_INC, thr); + + trx->error_state = err; + + if (err != DB_SUCCESS) { + que_thr_stop_for_mysql(thr); + + was_lock_wait = row_mysql_handle_errors(&err, trx, thr, NULL); + + if (was_lock_wait) { + goto run_again; + } + + trx->op_info = ""; + + return((int) err); + } + + que_thr_stop_for_mysql_no_error(thr, trx); + + trx->op_info = ""; + + return((int) err); +} + +/************************************************************************* +Sets a table lock on the table mentioned in prebuilt. */ +UNIV_INTERN +int +row_lock_table_for_mysql( +/*=====================*/ + /* out: error code or DB_SUCCESS */ + row_prebuilt_t* prebuilt, /* in: prebuilt struct in the MySQL + table handle */ + dict_table_t* table, /* in: table to lock, or NULL + if prebuilt->table should be + locked as + prebuilt->select_lock_type */ + ulint mode) /* in: lock mode of table + (ignored if table==NULL) */ +{ + trx_t* trx = prebuilt->trx; + que_thr_t* thr; + ulint err; + ibool was_lock_wait; + + ut_ad(trx); + ut_ad(trx->mysql_thread_id == os_thread_get_curr_id()); + + trx->op_info = "setting table lock"; + + if (prebuilt->sel_graph == NULL) { + /* Build a dummy select query graph */ + row_prebuild_sel_graph(prebuilt); + } + + /* We use the select query graph as the dummy graph needed + in the lock module call */ + + thr = que_fork_get_first_thr(prebuilt->sel_graph); + + que_thr_move_to_run_state_for_mysql(thr, trx); + +run_again: + thr->run_node = thr; + thr->prev_node = thr->common.parent; + + /* It may be that the current session has not yet started + its transaction, or it has been committed: */ + + trx_start_if_not_started(trx); + + if (table) { + err = lock_table(0, table, mode, thr); + } else { + err = lock_table(0, prebuilt->table, + prebuilt->select_lock_type, thr); + } + + trx->error_state = err; + + if (err != DB_SUCCESS) { + que_thr_stop_for_mysql(thr); + + was_lock_wait = row_mysql_handle_errors(&err, trx, thr, NULL); + + if (was_lock_wait) { + goto run_again; + } + + trx->op_info = ""; + + return((int) err); + } + + que_thr_stop_for_mysql_no_error(thr, trx); + + trx->op_info = ""; + + return((int) err); +} + +/************************************************************************* +Does an insert for MySQL. */ +UNIV_INTERN +int +row_insert_for_mysql( +/*=================*/ + /* out: error code or DB_SUCCESS */ + byte* mysql_rec, /* in: row in the MySQL format */ + row_prebuilt_t* prebuilt) /* in: prebuilt struct in MySQL + handle */ +{ + trx_savept_t savept; + que_thr_t* thr; + ulint err; + ibool was_lock_wait; + trx_t* trx = prebuilt->trx; + ins_node_t* node = prebuilt->ins_node; + + ut_ad(trx); + ut_ad(trx->mysql_thread_id == os_thread_get_curr_id()); + + if (prebuilt->table->ibd_file_missing) { + ut_print_timestamp(stderr); + fprintf(stderr, " InnoDB: Error:\n" + "InnoDB: MySQL is trying to use a table handle" + " but the .ibd file for\n" + "InnoDB: table %s does not exist.\n" + "InnoDB: Have you deleted the .ibd file" + " from the database directory under\n" + "InnoDB: the MySQL datadir, or have you" + " used DISCARD TABLESPACE?\n" + "InnoDB: Look from\n" + "InnoDB: http://dev.mysql.com/doc/refman/5.1/en/" + "innodb-troubleshooting.html\n" + "InnoDB: how you can resolve the problem.\n", + prebuilt->table->name); + return(DB_ERROR); + } + + if (UNIV_UNLIKELY(prebuilt->magic_n != ROW_PREBUILT_ALLOCATED)) { + fprintf(stderr, + "InnoDB: Error: trying to free a corrupt\n" + "InnoDB: table handle. Magic n %lu, table name ", + (ulong) prebuilt->magic_n); + ut_print_name(stderr, trx, TRUE, prebuilt->table->name); + putc('\n', stderr); + + mem_analyze_corruption(prebuilt); + + ut_error; + } + + if (UNIV_UNLIKELY(srv_created_new_raw || srv_force_recovery)) { + fputs("InnoDB: A new raw disk partition was initialized or\n" + "InnoDB: innodb_force_recovery is on: we do not allow\n" + "InnoDB: database modifications by the user. Shut down\n" + "InnoDB: mysqld and edit my.cnf so that" + " newraw is replaced\n" + "InnoDB: with raw, and innodb_force_... is removed.\n", + stderr); + + return(DB_ERROR); + } + + trx->op_info = "inserting"; + + row_mysql_delay_if_needed(); + + trx_start_if_not_started(trx); + + if (node == NULL) { + row_get_prebuilt_insert_row(prebuilt); + node = prebuilt->ins_node; + } + + row_mysql_convert_row_to_innobase(node->row, prebuilt, mysql_rec); + + savept = trx_savept_take(trx); + + thr = que_fork_get_first_thr(prebuilt->ins_graph); + + if (prebuilt->sql_stat_start) { + node->state = INS_NODE_SET_IX_LOCK; + prebuilt->sql_stat_start = FALSE; + } else { + node->state = INS_NODE_ALLOC_ROW_ID; + } + + que_thr_move_to_run_state_for_mysql(thr, trx); + +run_again: + thr->run_node = node; + thr->prev_node = node; + + row_ins_step(thr); + + err = trx->error_state; + + if (err != DB_SUCCESS) { + que_thr_stop_for_mysql(thr); + + /* TODO: what is this? */ thr->lock_state= QUE_THR_LOCK_ROW; + + was_lock_wait = row_mysql_handle_errors(&err, trx, thr, + &savept); + thr->lock_state= QUE_THR_LOCK_NOLOCK; + + if (was_lock_wait) { + goto run_again; + } + + trx->op_info = ""; + + return((int) err); + } + + que_thr_stop_for_mysql_no_error(thr, trx); + + prebuilt->table->stat_n_rows++; + + srv_n_rows_inserted++; + + if (prebuilt->table->stat_n_rows == 0) { + /* Avoid wrap-over */ + prebuilt->table->stat_n_rows--; + } + + row_update_statistics_if_needed(prebuilt->table); + trx->op_info = ""; + + return((int) err); +} + +/************************************************************************* +Builds a dummy query graph used in selects. */ +UNIV_INTERN +void +row_prebuild_sel_graph( +/*===================*/ + row_prebuilt_t* prebuilt) /* in: prebuilt struct in MySQL + handle */ +{ + sel_node_t* node; + + ut_ad(prebuilt && prebuilt->trx); + + if (prebuilt->sel_graph == NULL) { + + node = sel_node_create(prebuilt->heap); + + prebuilt->sel_graph = que_node_get_parent( + pars_complete_graph_for_exec(node, + prebuilt->trx, + prebuilt->heap)); + + prebuilt->sel_graph->state = QUE_FORK_ACTIVE; + } +} + +/************************************************************************* +Creates an query graph node of 'update' type to be used in the MySQL +interface. */ +UNIV_INTERN +upd_node_t* +row_create_update_node_for_mysql( +/*=============================*/ + /* out, own: update node */ + dict_table_t* table, /* in: table to update */ + mem_heap_t* heap) /* in: mem heap from which allocated */ +{ + upd_node_t* node; + + node = upd_node_create(heap); + + node->in_mysql_interface = TRUE; + node->is_delete = FALSE; + node->searched_update = FALSE; + node->select = NULL; + node->pcur = btr_pcur_create_for_mysql(); + node->table = table; + + node->update = upd_create(dict_table_get_n_cols(table), heap); + + node->update_n_fields = dict_table_get_n_cols(table); + + UT_LIST_INIT(node->columns); + node->has_clust_rec_x_lock = TRUE; + node->cmpl_info = 0; + + node->table_sym = NULL; + node->col_assign_list = NULL; + + return(node); +} + +/************************************************************************* +Gets pointer to a prebuilt update vector used in updates. If the update +graph has not yet been built in the prebuilt struct, then this function +first builds it. */ +UNIV_INTERN +upd_t* +row_get_prebuilt_update_vector( +/*===========================*/ + /* out: prebuilt update vector */ + row_prebuilt_t* prebuilt) /* in: prebuilt struct in MySQL + handle */ +{ + dict_table_t* table = prebuilt->table; + upd_node_t* node; + + ut_ad(prebuilt && table && prebuilt->trx); + + if (prebuilt->upd_node == NULL) { + + /* Not called before for this handle: create an update node + and query graph to the prebuilt struct */ + + node = row_create_update_node_for_mysql(table, prebuilt->heap); + + prebuilt->upd_node = node; + + prebuilt->upd_graph = que_node_get_parent( + pars_complete_graph_for_exec(node, + prebuilt->trx, + prebuilt->heap)); + prebuilt->upd_graph->state = QUE_FORK_ACTIVE; + } + + return(prebuilt->upd_node->update); +} + +/************************************************************************* +Does an update or delete of a row for MySQL. */ +UNIV_INTERN +int +row_update_for_mysql( +/*=================*/ + /* out: error code or DB_SUCCESS */ + byte* mysql_rec, /* in: the row to be updated, in + the MySQL format */ + row_prebuilt_t* prebuilt) /* in: prebuilt struct in MySQL + handle */ +{ + trx_savept_t savept; + ulint err; + que_thr_t* thr; + ibool was_lock_wait; + dict_index_t* clust_index; + /* ulint ref_len; */ + upd_node_t* node; + dict_table_t* table = prebuilt->table; + trx_t* trx = prebuilt->trx; + + ut_ad(prebuilt && trx); + ut_ad(trx->mysql_thread_id == os_thread_get_curr_id()); + UT_NOT_USED(mysql_rec); + + if (prebuilt->table->ibd_file_missing) { + ut_print_timestamp(stderr); + fprintf(stderr, " InnoDB: Error:\n" + "InnoDB: MySQL is trying to use a table handle" + " but the .ibd file for\n" + "InnoDB: table %s does not exist.\n" + "InnoDB: Have you deleted the .ibd file" + " from the database directory under\n" + "InnoDB: the MySQL datadir, or have you" + " used DISCARD TABLESPACE?\n" + "InnoDB: Look from\n" + "InnoDB: http://dev.mysql.com/doc/refman/5.1/en/" + "innodb-troubleshooting.html\n" + "InnoDB: how you can resolve the problem.\n", + prebuilt->table->name); + return(DB_ERROR); + } + + if (UNIV_UNLIKELY(prebuilt->magic_n != ROW_PREBUILT_ALLOCATED)) { + fprintf(stderr, + "InnoDB: Error: trying to free a corrupt\n" + "InnoDB: table handle. Magic n %lu, table name ", + (ulong) prebuilt->magic_n); + ut_print_name(stderr, trx, TRUE, prebuilt->table->name); + putc('\n', stderr); + + mem_analyze_corruption(prebuilt); + + ut_error; + } + + if (UNIV_UNLIKELY(srv_created_new_raw || srv_force_recovery)) { + fputs("InnoDB: A new raw disk partition was initialized or\n" + "InnoDB: innodb_force_recovery is on: we do not allow\n" + "InnoDB: database modifications by the user. Shut down\n" + "InnoDB: mysqld and edit my.cnf so that newraw" + " is replaced\n" + "InnoDB: with raw, and innodb_force_... is removed.\n", + stderr); + + return(DB_ERROR); + } + + trx->op_info = "updating or deleting"; + + row_mysql_delay_if_needed(); + + trx_start_if_not_started(trx); + + node = prebuilt->upd_node; + + clust_index = dict_table_get_first_index(table); + + if (prebuilt->pcur->btr_cur.index == clust_index) { + btr_pcur_copy_stored_position(node->pcur, prebuilt->pcur); + } else { + btr_pcur_copy_stored_position(node->pcur, + prebuilt->clust_pcur); + } + + ut_a(node->pcur->rel_pos == BTR_PCUR_ON); + + /* MySQL seems to call rnd_pos before updating each row it + has cached: we can get the correct cursor position from + prebuilt->pcur; NOTE that we cannot build the row reference + from mysql_rec if the clustered index was automatically + generated for the table: MySQL does not know anything about + the row id used as the clustered index key */ + + savept = trx_savept_take(trx); + + thr = que_fork_get_first_thr(prebuilt->upd_graph); + + node->state = UPD_NODE_UPDATE_CLUSTERED; + + ut_ad(!prebuilt->sql_stat_start); + + que_thr_move_to_run_state_for_mysql(thr, trx); + +run_again: + thr->run_node = node; + thr->prev_node = node; + + row_upd_step(thr); + + err = trx->error_state; + + if (err != DB_SUCCESS) { + que_thr_stop_for_mysql(thr); + + if (err == DB_RECORD_NOT_FOUND) { + trx->error_state = DB_SUCCESS; + trx->op_info = ""; + + return((int) err); + } + + thr->lock_state= QUE_THR_LOCK_ROW; + was_lock_wait = row_mysql_handle_errors(&err, trx, thr, + &savept); + thr->lock_state= QUE_THR_LOCK_NOLOCK; + + if (was_lock_wait) { + goto run_again; + } + + trx->op_info = ""; + + return((int) err); + } + + que_thr_stop_for_mysql_no_error(thr, trx); + + if (node->is_delete) { + if (prebuilt->table->stat_n_rows > 0) { + prebuilt->table->stat_n_rows--; + } + + srv_n_rows_deleted++; + } else { + srv_n_rows_updated++; + } + + row_update_statistics_if_needed(prebuilt->table); + + trx->op_info = ""; + + return((int) err); +} + +/************************************************************************* +This can only be used when srv_locks_unsafe_for_binlog is TRUE or +this session is using a READ COMMITTED isolation level. Before +calling this function we must use trx_reset_new_rec_lock_info() and +trx_register_new_rec_lock() to store the information which new record locks +really were set. This function removes a newly set lock under prebuilt->pcur, +and also under prebuilt->clust_pcur. Currently, this is only used and tested +in the case of an UPDATE or a DELETE statement, where the row lock is of the +LOCK_X type. +Thus, this implements a 'mini-rollback' that releases the latest record +locks we set. */ +UNIV_INTERN +int +row_unlock_for_mysql( +/*=================*/ + /* out: error code or DB_SUCCESS */ + row_prebuilt_t* prebuilt, /* in: prebuilt struct in MySQL + handle */ + ibool has_latches_on_recs)/* TRUE if called so that we have + the latches on the records under pcur + and clust_pcur, and we do not need to + reposition the cursors. */ +{ + dict_index_t* index; + btr_pcur_t* pcur = prebuilt->pcur; + btr_pcur_t* clust_pcur = prebuilt->clust_pcur; + trx_t* trx = prebuilt->trx; + rec_t* rec; + mtr_t mtr; + + ut_ad(prebuilt && trx); + ut_ad(trx->mysql_thread_id == os_thread_get_curr_id()); + + if (UNIV_UNLIKELY + (!srv_locks_unsafe_for_binlog + && trx->isolation_level != TRX_ISO_READ_COMMITTED)) { + + fprintf(stderr, + "InnoDB: Error: calling row_unlock_for_mysql though\n" + "InnoDB: innodb_locks_unsafe_for_binlog is FALSE and\n" + "InnoDB: this session is not using" + " READ COMMITTED isolation level.\n"); + + return(DB_SUCCESS); + } + + trx->op_info = "unlock_row"; + + index = btr_pcur_get_btr_cur(pcur)->index; + + if (index != NULL && trx_new_rec_locks_contain(trx, index)) { + + mtr_start(&mtr); + + /* Restore the cursor position and find the record */ + + if (!has_latches_on_recs) { + btr_pcur_restore_position(BTR_SEARCH_LEAF, pcur, &mtr); + } + + rec = btr_pcur_get_rec(pcur); + + lock_rec_unlock(trx, btr_pcur_get_block(pcur), + rec, prebuilt->select_lock_type); + + mtr_commit(&mtr); + + /* If the search was done through the clustered index, then + we have not used clust_pcur at all, and we must NOT try to + reset locks on clust_pcur. The values in clust_pcur may be + garbage! */ + + if (dict_index_is_clust(index)) { + + goto func_exit; + } + } + + index = btr_pcur_get_btr_cur(clust_pcur)->index; + + if (index != NULL && trx_new_rec_locks_contain(trx, index)) { + + mtr_start(&mtr); + + /* Restore the cursor position and find the record */ + + if (!has_latches_on_recs) { + btr_pcur_restore_position(BTR_SEARCH_LEAF, clust_pcur, + &mtr); + } + + rec = btr_pcur_get_rec(clust_pcur); + + lock_rec_unlock(trx, btr_pcur_get_block(clust_pcur), + rec, prebuilt->select_lock_type); + + mtr_commit(&mtr); + } + +func_exit: + trx->op_info = ""; + + return(DB_SUCCESS); +} + +/************************************************************************** +Does a cascaded delete or set null in a foreign key operation. */ +UNIV_INTERN +ulint +row_update_cascade_for_mysql( +/*=========================*/ + /* out: error code or DB_SUCCESS */ + que_thr_t* thr, /* in: query thread */ + upd_node_t* node, /* in: update node used in the cascade + or set null operation */ + dict_table_t* table) /* in: table where we do the operation */ +{ + ulint err; + trx_t* trx; + + trx = thr_get_trx(thr); +run_again: + thr->run_node = node; + thr->prev_node = node; + + row_upd_step(thr); + + err = trx->error_state; + + /* Note that the cascade node is a subnode of another InnoDB + query graph node. We do a normal lock wait in this node, but + all errors are handled by the parent node. */ + + if (err == DB_LOCK_WAIT) { + /* Handle lock wait here */ + + que_thr_stop_for_mysql(thr); + + srv_suspend_mysql_thread(thr); + + /* Note that a lock wait may also end in a lock wait timeout, + or this transaction is picked as a victim in selective + deadlock resolution */ + + if (trx->error_state != DB_SUCCESS) { + + return(trx->error_state); + } + + /* Retry operation after a normal lock wait */ + + goto run_again; + } + + if (err != DB_SUCCESS) { + + return(err); + } + + if (node->is_delete) { + if (table->stat_n_rows > 0) { + table->stat_n_rows--; + } + + srv_n_rows_deleted++; + } else { + srv_n_rows_updated++; + } + + row_update_statistics_if_needed(table); + + return(err); +} + +/************************************************************************* +Checks if a table is such that we automatically created a clustered +index on it (on row id). */ +UNIV_INTERN +ibool +row_table_got_default_clust_index( +/*==============================*/ + const dict_table_t* table) +{ + const dict_index_t* clust_index; + + clust_index = dict_table_get_first_index(table); + + return(dict_index_get_nth_col(clust_index, 0)->mtype == DATA_SYS); +} + +/************************************************************************* +Calculates the key number used inside MySQL for an Innobase index. We have +to take into account if we generated a default clustered index for the table */ +UNIV_INTERN +ulint +row_get_mysql_key_number_for_index( +/*===============================*/ + const dict_index_t* index) +{ + const dict_index_t* ind; + ulint i; + + ut_a(index); + + i = 0; + ind = dict_table_get_first_index(index->table); + + while (index != ind) { + ind = dict_table_get_next_index(ind); + i++; + } + + if (row_table_got_default_clust_index(index->table)) { + ut_a(i > 0); + i--; + } + + return(i); +} + +/************************************************************************* +Locks the data dictionary in shared mode from modifications, for performing +foreign key check, rollback, or other operation invisible to MySQL. */ +UNIV_INTERN +void +row_mysql_freeze_data_dictionary_func( +/*==================================*/ + trx_t* trx, /* in/out: transaction */ + const char* file, /* in: file name */ + ulint line) /* in: line number */ +{ + ut_a(trx->dict_operation_lock_mode == 0); + + rw_lock_s_lock_func(&dict_operation_lock, 0, file, line); + + trx->dict_operation_lock_mode = RW_S_LATCH; +} + +/************************************************************************* +Unlocks the data dictionary shared lock. */ +UNIV_INTERN +void +row_mysql_unfreeze_data_dictionary( +/*===============================*/ + trx_t* trx) /* in/out: transaction */ +{ + ut_a(trx->dict_operation_lock_mode == RW_S_LATCH); + + rw_lock_s_unlock(&dict_operation_lock); + + trx->dict_operation_lock_mode = 0; +} + +/************************************************************************* +Locks the data dictionary exclusively for performing a table create or other +data dictionary modification operation. */ +UNIV_INTERN +void +row_mysql_lock_data_dictionary_func( +/*================================*/ + trx_t* trx, /* in/out: transaction */ + const char* file, /* in: file name */ + ulint line) /* in: line number */ +{ + ut_a(trx->dict_operation_lock_mode == 0 + || trx->dict_operation_lock_mode == RW_X_LATCH); + + /* Serialize data dictionary operations with dictionary mutex: + no deadlocks or lock waits can occur then in these operations */ + + rw_lock_x_lock_func(&dict_operation_lock, 0, file, line); + trx->dict_operation_lock_mode = RW_X_LATCH; + + mutex_enter(&(dict_sys->mutex)); +} + +/************************************************************************* +Unlocks the data dictionary exclusive lock. */ +UNIV_INTERN +void +row_mysql_unlock_data_dictionary( +/*=============================*/ + trx_t* trx) /* in/out: transaction */ +{ + ut_a(trx->dict_operation_lock_mode == RW_X_LATCH); + + /* Serialize data dictionary operations with dictionary mutex: + no deadlocks can occur then in these operations */ + + mutex_exit(&(dict_sys->mutex)); + rw_lock_x_unlock(&dict_operation_lock); + + trx->dict_operation_lock_mode = 0; +} + +#ifndef UNIV_HOTBACKUP +/************************************************************************* +Creates a table for MySQL. If the name of the table ends in +one of "innodb_monitor", "innodb_lock_monitor", "innodb_tablespace_monitor", +"innodb_table_monitor", then this will also start the printing of monitor +output by the master thread. If the table name ends in "innodb_mem_validate", +InnoDB will try to invoke mem_validate(). */ +UNIV_INTERN +int +row_create_table_for_mysql( +/*=======================*/ + /* out: error code or DB_SUCCESS */ + dict_table_t* table, /* in, own: table definition + (will be freed) */ + trx_t* trx) /* in: transaction handle */ +{ + tab_node_t* node; + mem_heap_t* heap; + que_thr_t* thr; + const char* table_name; + ulint table_name_len; + ulint err; + ulint i; + + ut_ad(trx->mysql_thread_id == os_thread_get_curr_id()); +#ifdef UNIV_SYNC_DEBUG + ut_ad(rw_lock_own(&dict_operation_lock, RW_LOCK_EX)); +#endif /* UNIV_SYNC_DEBUG */ + ut_ad(mutex_own(&(dict_sys->mutex))); + ut_ad(trx->dict_operation_lock_mode == RW_X_LATCH); + + if (srv_created_new_raw) { + fputs("InnoDB: A new raw disk partition was initialized:\n" + "InnoDB: we do not allow database modifications" + " by the user.\n" + "InnoDB: Shut down mysqld and edit my.cnf so that newraw" + " is replaced with raw.\n", stderr); +err_exit: + dict_mem_table_free(table); + trx_commit_for_mysql(trx); + + return(DB_ERROR); + } + + trx->op_info = "creating table"; + + if (row_mysql_is_system_table(table->name)) { + + fprintf(stderr, + "InnoDB: Error: trying to create a MySQL system" + " table %s of type InnoDB.\n" + "InnoDB: MySQL system tables must be" + " of the MyISAM type!\n", + table->name); + goto err_exit; + } + + /* Check that no reserved column names are used. */ + for (i = 0; i < dict_table_get_n_user_cols(table); i++) { + if (dict_col_name_is_reserved( + dict_table_get_col_name(table, i))) { + + goto err_exit; + } + } + + trx_start_if_not_started(trx); + + /* The table name is prefixed with the database name and a '/'. + Certain table names starting with 'innodb_' have their special + meaning regardless of the database name. Thus, we need to + ignore the database name prefix in the comparisons. */ + table_name = strchr(table->name, '/'); + ut_a(table_name); + table_name++; + table_name_len = strlen(table_name) + 1; + + if (STR_EQ(table_name, table_name_len, S_innodb_monitor)) { + + /* Table equals "innodb_monitor": + start monitor prints */ + + srv_print_innodb_monitor = TRUE; + + /* The lock timeout monitor thread also takes care + of InnoDB monitor prints */ + + os_event_set(srv_lock_timeout_thread_event); + } else if (STR_EQ(table_name, table_name_len, + S_innodb_lock_monitor)) { + + srv_print_innodb_monitor = TRUE; + srv_print_innodb_lock_monitor = TRUE; + os_event_set(srv_lock_timeout_thread_event); + } else if (STR_EQ(table_name, table_name_len, + S_innodb_tablespace_monitor)) { + + srv_print_innodb_tablespace_monitor = TRUE; + os_event_set(srv_lock_timeout_thread_event); + } else if (STR_EQ(table_name, table_name_len, + S_innodb_table_monitor)) { + + srv_print_innodb_table_monitor = TRUE; + os_event_set(srv_lock_timeout_thread_event); + } else if (STR_EQ(table_name, table_name_len, + S_innodb_mem_validate)) { + /* We define here a debugging feature intended for + developers */ + + fputs("Validating InnoDB memory:\n" + "to use this feature you must compile InnoDB with\n" + "UNIV_MEM_DEBUG defined in univ.i and" + " the server must be\n" + "quiet because allocation from a mem heap" + " is not protected\n" + "by any semaphore.\n", stderr); +#ifdef UNIV_MEM_DEBUG + ut_a(mem_validate()); + fputs("Memory validated\n", stderr); +#else /* UNIV_MEM_DEBUG */ + fputs("Memory NOT validated (recompile with UNIV_MEM_DEBUG)\n", + stderr); +#endif /* UNIV_MEM_DEBUG */ + } + + heap = mem_heap_create(512); + + trx_set_dict_operation(trx, TRX_DICT_OP_TABLE); + + node = tab_create_graph_create(table, heap); + + thr = pars_complete_graph_for_exec(node, trx, heap); + + ut_a(thr == que_fork_start_command(que_node_get_parent(thr))); + que_run_threads(thr); + + err = trx->error_state; + + if (UNIV_UNLIKELY(err != DB_SUCCESS)) { + trx->error_state = DB_SUCCESS; + trx_general_rollback_for_mysql(trx, FALSE, NULL); + } + + switch (err) { + case DB_OUT_OF_FILE_SPACE: + ut_print_timestamp(stderr); + fputs(" InnoDB: Warning: cannot create table ", + stderr); + ut_print_name(stderr, trx, TRUE, table->name); + fputs(" because tablespace full\n", stderr); + + if (dict_table_get_low(table->name)) { + + row_drop_table_for_mysql(table->name, trx, FALSE); + trx_commit_for_mysql(trx); + } + break; + + case DB_DUPLICATE_KEY: + ut_print_timestamp(stderr); + fputs(" InnoDB: Error: table ", stderr); + ut_print_name(stderr, trx, TRUE, table->name); + fputs(" already exists in InnoDB internal\n" + "InnoDB: data dictionary. Have you deleted" + " the .frm file\n" + "InnoDB: and not used DROP TABLE?" + " Have you used DROP DATABASE\n" + "InnoDB: for InnoDB tables in" + " MySQL version <= 3.23.43?\n" + "InnoDB: See the Restrictions section" + " of the InnoDB manual.\n" + "InnoDB: You can drop the orphaned table" + " inside InnoDB by\n" + "InnoDB: creating an InnoDB table with" + " the same name in another\n" + "InnoDB: database and copying the .frm file" + " to the current database.\n" + "InnoDB: Then MySQL thinks the table exists," + " and DROP TABLE will\n" + "InnoDB: succeed.\n" + "InnoDB: You can look for further help from\n" + "InnoDB: " + "http://dev.mysql.com/doc/refman/5.1/en/" + "innodb-troubleshooting.html\n", stderr); + + /* We may also get err == DB_ERROR if the .ibd file for the + table already exists */ + + break; + } + + que_graph_free((que_t*) que_node_get_parent(thr)); + + trx->op_info = ""; + + return((int) err); +} + +/************************************************************************* +Does an index creation operation for MySQL. TODO: currently failure +to create an index results in dropping the whole table! This is no problem +currently as all indexes must be created at the same time as the table. */ +UNIV_INTERN +int +row_create_index_for_mysql( +/*=======================*/ + /* out: error number or DB_SUCCESS */ + dict_index_t* index, /* in, own: index definition + (will be freed) */ + trx_t* trx, /* in: transaction handle */ + const ulint* field_lengths) /* in: if not NULL, must contain + dict_index_get_n_fields(index) + actual field lengths for the + index columns, which are + then checked for not being too + large. */ +{ + ind_node_t* node; + mem_heap_t* heap; + que_thr_t* thr; + ulint err; + ulint i; + ulint len; + char* table_name; + +#ifdef UNIV_SYNC_DEBUG + ut_ad(rw_lock_own(&dict_operation_lock, RW_LOCK_EX)); +#endif /* UNIV_SYNC_DEBUG */ + ut_ad(mutex_own(&(dict_sys->mutex))); + ut_ad(trx->mysql_thread_id == os_thread_get_curr_id()); + + trx->op_info = "creating index"; + + /* Copy the table name because we may want to drop the + table later, after the index object is freed (inside + que_run_threads()) and thus index->table_name is not available. */ + table_name = mem_strdup(index->table_name); + + trx_start_if_not_started(trx); + + /* Check that the same column does not appear twice in the index. + Starting from 4.0.14, InnoDB should be able to cope with that, but + safer not to allow them. */ + + for (i = 0; i < dict_index_get_n_fields(index); i++) { + ulint j; + + for (j = 0; j < i; j++) { + if (0 == ut_strcmp( + dict_index_get_nth_field(index, j)->name, + dict_index_get_nth_field(index, i)->name)) { + ut_print_timestamp(stderr); + + fputs(" InnoDB: Error: column ", stderr); + ut_print_name(stderr, trx, FALSE, + dict_index_get_nth_field( + index, i)->name); + fputs(" appears twice in ", stderr); + dict_index_name_print(stderr, trx, index); + fputs("\n" + "InnoDB: This is not allowed" + " in InnoDB.\n", stderr); + + err = DB_COL_APPEARS_TWICE_IN_INDEX; + + goto error_handling; + } + } + + /* Check also that prefix_len and actual length + < DICT_MAX_INDEX_COL_LEN */ + + len = dict_index_get_nth_field(index, i)->prefix_len; + + if (field_lengths) { + len = ut_max(len, field_lengths[i]); + } + + if (len >= DICT_MAX_INDEX_COL_LEN) { + err = DB_TOO_BIG_RECORD; + + goto error_handling; + } + } + + heap = mem_heap_create(512); + + trx_set_dict_operation(trx, TRX_DICT_OP_TABLE); + + /* Note that the space id where we store the index is inherited from + the table in dict_build_index_def_step() in dict0crea.c. */ + + node = ind_create_graph_create(index, heap); + + thr = pars_complete_graph_for_exec(node, trx, heap); + + ut_a(thr == que_fork_start_command(que_node_get_parent(thr))); + que_run_threads(thr); + + err = trx->error_state; + + que_graph_free((que_t*) que_node_get_parent(thr)); + +error_handling: + if (err != DB_SUCCESS) { + /* We have special error handling here */ + + trx->error_state = DB_SUCCESS; + + trx_general_rollback_for_mysql(trx, FALSE, NULL); + + row_drop_table_for_mysql(table_name, trx, FALSE); + + trx_commit_for_mysql(trx); + + trx->error_state = DB_SUCCESS; + } + + trx->op_info = ""; + + mem_free(table_name); + + return((int) err); +} + +/************************************************************************* +Scans a table create SQL string and adds to the data dictionary +the foreign key constraints declared in the string. This function +should be called after the indexes for a table have been created. +Each foreign key constraint must be accompanied with indexes in +bot participating tables. The indexes are allowed to contain more +fields than mentioned in the constraint. Check also that foreign key +constraints which reference this table are ok. */ +UNIV_INTERN +int +row_table_add_foreign_constraints( +/*==============================*/ + /* out: error code or DB_SUCCESS */ + trx_t* trx, /* in: transaction */ + const char* sql_string, /* in: table create statement where + foreign keys are declared like: + FOREIGN KEY (a, b) REFERENCES table2(c, d), + table2 can be written also with the + database name before it: test.table2 */ + const char* name, /* in: table full name in the + normalized form + database_name/table_name */ + ibool reject_fks) /* in: if TRUE, fail with error + code DB_CANNOT_ADD_CONSTRAINT if + any foreign keys are found. */ +{ + ulint err; + + ut_ad(mutex_own(&(dict_sys->mutex))); +#ifdef UNIV_SYNC_DEBUG + ut_ad(rw_lock_own(&dict_operation_lock, RW_LOCK_EX)); +#endif /* UNIV_SYNC_DEBUG */ + ut_a(sql_string); + + trx->op_info = "adding foreign keys"; + + trx_start_if_not_started(trx); + + trx_set_dict_operation(trx, TRX_DICT_OP_TABLE); + + err = dict_create_foreign_constraints(trx, sql_string, name, + reject_fks); +#ifndef UNIV_HOTBACKUP + if (err == DB_SUCCESS) { + /* Check that also referencing constraints are ok */ + err = dict_load_foreigns(name, TRUE); + } +#endif /* !UNIV_HOTBACKUP */ + if (err != DB_SUCCESS) { + /* We have special error handling here */ + + trx->error_state = DB_SUCCESS; + + trx_general_rollback_for_mysql(trx, FALSE, NULL); + + row_drop_table_for_mysql(name, trx, FALSE); + + trx_commit_for_mysql(trx); + + trx->error_state = DB_SUCCESS; + } + + return((int) err); +} + +/************************************************************************* +Drops a table for MySQL as a background operation. MySQL relies on Unix +in ALTER TABLE to the fact that the table handler does not remove the +table before all handles to it has been removed. Furhermore, the MySQL's +call to drop table must be non-blocking. Therefore we do the drop table +as a background operation, which is taken care of by the master thread +in srv0srv.c. */ +static +int +row_drop_table_for_mysql_in_background( +/*===================================*/ + /* out: error code or DB_SUCCESS */ + const char* name) /* in: table name */ +{ + ulint error; + trx_t* trx; + + trx = trx_allocate_for_background(); + + /* If the original transaction was dropping a table referenced by + foreign keys, we must set the following to be able to drop the + table: */ + + trx->check_foreigns = FALSE; + + /* fputs("InnoDB: Error: Dropping table ", stderr); + ut_print_name(stderr, trx, TRUE, name); + fputs(" in background drop list\n", stderr); */ + + /* Try to drop the table in InnoDB */ + + error = row_drop_table_for_mysql(name, trx, FALSE); + + /* Flush the log to reduce probability that the .frm files and + the InnoDB data dictionary get out-of-sync if the user runs + with innodb_flush_log_at_trx_commit = 0 */ + + log_buffer_flush_to_disk(); + + trx_commit_for_mysql(trx); + + trx_free_for_background(trx); + + return((int) error); +} + +/************************************************************************* +The master thread in srv0srv.c calls this regularly to drop tables which +we must drop in background after queries to them have ended. Such lazy +dropping of tables is needed in ALTER TABLE on Unix. */ +UNIV_INTERN +ulint +row_drop_tables_for_mysql_in_background(void) +/*=========================================*/ + /* out: how many tables dropped + + remaining tables in list */ +{ + row_mysql_drop_t* drop; + dict_table_t* table; + ulint n_tables; + ulint n_tables_dropped = 0; +loop: + mutex_enter(&kernel_mutex); + + if (!row_mysql_drop_list_inited) { + + UT_LIST_INIT(row_mysql_drop_list); + row_mysql_drop_list_inited = TRUE; + } + + drop = UT_LIST_GET_FIRST(row_mysql_drop_list); + + n_tables = UT_LIST_GET_LEN(row_mysql_drop_list); + + mutex_exit(&kernel_mutex); + + if (drop == NULL) { + /* All tables dropped */ + + return(n_tables + n_tables_dropped); + } + + mutex_enter(&(dict_sys->mutex)); + table = dict_table_get_low(drop->table_name); + mutex_exit(&(dict_sys->mutex)); + + if (table == NULL) { + /* If for some reason the table has already been dropped + through some other mechanism, do not try to drop it */ + + goto already_dropped; + } + + if (DB_SUCCESS != row_drop_table_for_mysql_in_background( + drop->table_name)) { + /* If the DROP fails for some table, we return, and let the + main thread retry later */ + + return(n_tables + n_tables_dropped); + } + + n_tables_dropped++; + +already_dropped: + mutex_enter(&kernel_mutex); + + UT_LIST_REMOVE(row_mysql_drop_list, row_mysql_drop_list, drop); + + ut_print_timestamp(stderr); + fputs(" InnoDB: Dropped table ", stderr); + ut_print_name(stderr, NULL, TRUE, drop->table_name); + fputs(" in background drop queue.\n", stderr); + + mem_free(drop->table_name); + + mem_free(drop); + + mutex_exit(&kernel_mutex); + + goto loop; +} + +/************************************************************************* +Get the background drop list length. NOTE: the caller must own the kernel +mutex! */ +UNIV_INTERN +ulint +row_get_background_drop_list_len_low(void) +/*======================================*/ + /* out: how many tables in list */ +{ + ut_ad(mutex_own(&kernel_mutex)); + + if (!row_mysql_drop_list_inited) { + + UT_LIST_INIT(row_mysql_drop_list); + row_mysql_drop_list_inited = TRUE; + } + + return(UT_LIST_GET_LEN(row_mysql_drop_list)); +} + +/************************************************************************* +If a table is not yet in the drop list, adds the table to the list of tables +which the master thread drops in background. We need this on Unix because in +ALTER TABLE MySQL may call drop table even if the table has running queries on +it. Also, if there are running foreign key checks on the table, we drop the +table lazily. */ +static +ibool +row_add_table_to_background_drop_list( +/*==================================*/ + /* out: TRUE if the table was not yet in the + drop list, and was added there */ + const char* name) /* in: table name */ +{ + row_mysql_drop_t* drop; + + mutex_enter(&kernel_mutex); + + if (!row_mysql_drop_list_inited) { + + UT_LIST_INIT(row_mysql_drop_list); + row_mysql_drop_list_inited = TRUE; + } + + /* Look if the table already is in the drop list */ + drop = UT_LIST_GET_FIRST(row_mysql_drop_list); + + while (drop != NULL) { + if (strcmp(drop->table_name, name) == 0) { + /* Already in the list */ + + mutex_exit(&kernel_mutex); + + return(FALSE); + } + + drop = UT_LIST_GET_NEXT(row_mysql_drop_list, drop); + } + + drop = mem_alloc(sizeof(row_mysql_drop_t)); + + drop->table_name = mem_strdup(name); + + UT_LIST_ADD_LAST(row_mysql_drop_list, row_mysql_drop_list, drop); + + /* fputs("InnoDB: Adding table ", stderr); + ut_print_name(stderr, trx, TRUE, drop->table_name); + fputs(" to background drop list\n", stderr); */ + + mutex_exit(&kernel_mutex); + + return(TRUE); +} + +/************************************************************************* +Discards the tablespace of a table which stored in an .ibd file. Discarding +means that this function deletes the .ibd file and assigns a new table id for +the table. Also the flag table->ibd_file_missing is set TRUE. */ +UNIV_INTERN +int +row_discard_tablespace_for_mysql( +/*=============================*/ + /* out: error code or DB_SUCCESS */ + const char* name, /* in: table name */ + trx_t* trx) /* in: transaction handle */ +{ + dict_foreign_t* foreign; + dulint new_id; + dict_table_t* table; + ibool success; + ulint err; + pars_info_t* info = NULL; + + /* How do we prevent crashes caused by ongoing operations on + the table? Old operations could try to access non-existent + pages. + + 1) SQL queries, INSERT, SELECT, ...: we must get an exclusive + MySQL table lock on the table before we can do DISCARD + TABLESPACE. Then there are no running queries on the table. + + 2) Purge and rollback: we assign a new table id for the + table. Since purge and rollback look for the table based on + the table id, they see the table as 'dropped' and discard + their operations. + + 3) Insert buffer: we remove all entries for the tablespace in + the insert buffer tree; as long as the tablespace mem object + does not exist, ongoing insert buffer page merges are + discarded in buf0rea.c. If we recreate the tablespace mem + object with IMPORT TABLESPACE later, then the tablespace will + have the same id, but the tablespace_version field in the mem + object is different, and ongoing old insert buffer page merges + get discarded. + + 4) Linear readahead and random readahead: we use the same + method as in 3) to discard ongoing operations. + + 5) FOREIGN KEY operations: if + table->n_foreign_key_checks_running > 0, we do not allow the + discard. We also reserve the data dictionary latch. */ + + ut_ad(trx->mysql_thread_id == os_thread_get_curr_id()); + + trx->op_info = "discarding tablespace"; + trx_start_if_not_started(trx); + + /* Serialize data dictionary operations with dictionary mutex: + no deadlocks can occur then in these operations */ + + row_mysql_lock_data_dictionary(trx); + + table = dict_table_get_low(name); + + if (!table) { + err = DB_TABLE_NOT_FOUND; + + goto funct_exit; + } + + if (table->space == 0) { + ut_print_timestamp(stderr); + fputs(" InnoDB: Error: table ", stderr); + ut_print_name(stderr, trx, TRUE, name); + fputs("\n" + "InnoDB: is in the system tablespace 0" + " which cannot be discarded\n", stderr); + err = DB_ERROR; + + goto funct_exit; + } + + if (table->n_foreign_key_checks_running > 0) { + + ut_print_timestamp(stderr); + fputs(" InnoDB: You are trying to DISCARD table ", stderr); + ut_print_name(stderr, trx, TRUE, table->name); + fputs("\n" + "InnoDB: though there is a foreign key check" + " running on it.\n" + "InnoDB: Cannot discard the table.\n", + stderr); + + err = DB_ERROR; + + goto funct_exit; + } + + /* Check if the table is referenced by foreign key constraints from + some other table (not the table itself) */ + + foreign = UT_LIST_GET_FIRST(table->referenced_list); + + while (foreign && foreign->foreign_table == table) { + foreign = UT_LIST_GET_NEXT(referenced_list, foreign); + } + + if (foreign && trx->check_foreigns) { + + FILE* ef = dict_foreign_err_file; + + /* We only allow discarding a referenced table if + FOREIGN_KEY_CHECKS is set to 0 */ + + err = DB_CANNOT_DROP_CONSTRAINT; + + mutex_enter(&dict_foreign_err_mutex); + rewind(ef); + ut_print_timestamp(ef); + + fputs(" Cannot DISCARD table ", ef); + ut_print_name(stderr, trx, TRUE, name); + fputs("\n" + "because it is referenced by ", ef); + ut_print_name(stderr, trx, TRUE, foreign->foreign_table_name); + putc('\n', ef); + mutex_exit(&dict_foreign_err_mutex); + + goto funct_exit; + } + + new_id = dict_hdr_get_new_id(DICT_HDR_TABLE_ID); + + /* Remove all locks except the table-level S and X locks. */ + lock_remove_all_on_table(table, FALSE); + + info = pars_info_create(); + + pars_info_add_str_literal(info, "table_name", name); + pars_info_add_dulint_literal(info, "new_id", new_id); + + err = que_eval_sql(info, + "PROCEDURE DISCARD_TABLESPACE_PROC () IS\n" + "old_id CHAR;\n" + "BEGIN\n" + "SELECT ID INTO old_id\n" + "FROM SYS_TABLES\n" + "WHERE NAME = :table_name\n" + "LOCK IN SHARE MODE;\n" + "IF (SQL % NOTFOUND) THEN\n" + " COMMIT WORK;\n" + " RETURN;\n" + "END IF;\n" + "UPDATE SYS_TABLES SET ID = :new_id\n" + " WHERE ID = old_id;\n" + "UPDATE SYS_COLUMNS SET TABLE_ID = :new_id\n" + " WHERE TABLE_ID = old_id;\n" + "UPDATE SYS_INDEXES SET TABLE_ID = :new_id\n" + " WHERE TABLE_ID = old_id;\n" + "COMMIT WORK;\n" + "END;\n" + , FALSE, trx); + + if (err != DB_SUCCESS) { + trx->error_state = DB_SUCCESS; + trx_general_rollback_for_mysql(trx, FALSE, NULL); + trx->error_state = DB_SUCCESS; + } else { + dict_table_change_id_in_cache(table, new_id); + + success = fil_discard_tablespace(table->space); + + if (!success) { + trx->error_state = DB_SUCCESS; + trx_general_rollback_for_mysql(trx, FALSE, NULL); + trx->error_state = DB_SUCCESS; + + err = DB_ERROR; + } else { + /* Set the flag which tells that now it is legal to + IMPORT a tablespace for this table */ + table->tablespace_discarded = TRUE; + table->ibd_file_missing = TRUE; + } + } + +funct_exit: + trx_commit_for_mysql(trx); + + row_mysql_unlock_data_dictionary(trx); + + trx->op_info = ""; + + return((int) err); +} + +/********************************************************************* +Imports a tablespace. The space id in the .ibd file must match the space id +of the table in the data dictionary. */ +UNIV_INTERN +int +row_import_tablespace_for_mysql( +/*============================*/ + /* out: error code or DB_SUCCESS */ + const char* name, /* in: table name */ + trx_t* trx) /* in: transaction handle */ +{ + dict_table_t* table; + ibool success; + ib_uint64_t current_lsn; + ulint err = DB_SUCCESS; + + ut_ad(trx->mysql_thread_id == os_thread_get_curr_id()); + + trx_start_if_not_started(trx); + + trx->op_info = "importing tablespace"; + + current_lsn = log_get_lsn(); + + /* It is possible, though very improbable, that the lsn's in the + tablespace to be imported have risen above the current system lsn, if + a lengthy purge, ibuf merge, or rollback was performed on a backup + taken with ibbackup. If that is the case, reset page lsn's in the + file. We assume that mysqld was shut down after it performed these + cleanup operations on the .ibd file, so that it stamped the latest lsn + to the FIL_PAGE_FILE_FLUSH_LSN in the first page of the .ibd file. + + TODO: reset also the trx id's in clustered index records and write + a new space id to each data page. That would allow us to import clean + .ibd files from another MySQL installation. */ + + success = fil_reset_too_high_lsns(name, current_lsn); + + if (!success) { + ut_print_timestamp(stderr); + fputs(" InnoDB: Error: cannot reset lsn's in table ", stderr); + ut_print_name(stderr, trx, TRUE, name); + fputs("\n" + "InnoDB: in ALTER TABLE ... IMPORT TABLESPACE\n", + stderr); + + err = DB_ERROR; + + row_mysql_lock_data_dictionary(trx); + + goto funct_exit; + } + + /* Serialize data dictionary operations with dictionary mutex: + no deadlocks can occur then in these operations */ + + row_mysql_lock_data_dictionary(trx); + + table = dict_table_get_low(name); + + if (!table) { + ut_print_timestamp(stderr); + fputs(" InnoDB: table ", stderr); + ut_print_name(stderr, trx, TRUE, name); + fputs("\n" + "InnoDB: does not exist in the InnoDB data dictionary\n" + "InnoDB: in ALTER TABLE ... IMPORT TABLESPACE\n", + stderr); + + err = DB_TABLE_NOT_FOUND; + + goto funct_exit; + } + + if (table->space == 0) { + ut_print_timestamp(stderr); + fputs(" InnoDB: Error: table ", stderr); + ut_print_name(stderr, trx, TRUE, name); + fputs("\n" + "InnoDB: is in the system tablespace 0" + " which cannot be imported\n", stderr); + err = DB_ERROR; + + goto funct_exit; + } + + if (!table->tablespace_discarded) { + ut_print_timestamp(stderr); + fputs(" InnoDB: Error: you are trying to" + " IMPORT a tablespace\n" + "InnoDB: ", stderr); + ut_print_name(stderr, trx, TRUE, name); + fputs(", though you have not called DISCARD on it yet\n" + "InnoDB: during the lifetime of the mysqld process!\n", + stderr); + + err = DB_ERROR; + + goto funct_exit; + } + + /* Play safe and remove all insert buffer entries, though we should + have removed them already when DISCARD TABLESPACE was called */ + + ibuf_delete_for_discarded_space(table->space); + + success = fil_open_single_table_tablespace( + TRUE, table->space, + table->flags == DICT_TF_COMPACT ? 0 : table->flags, + table->name); + if (success) { + table->ibd_file_missing = FALSE; + table->tablespace_discarded = FALSE; + } else { + if (table->ibd_file_missing) { + ut_print_timestamp(stderr); + fputs(" InnoDB: cannot find or open in the" + " database directory the .ibd file of\n" + "InnoDB: table ", stderr); + ut_print_name(stderr, trx, TRUE, name); + fputs("\n" + "InnoDB: in ALTER TABLE ... IMPORT TABLESPACE\n", + stderr); + } + + err = DB_ERROR; + } + +funct_exit: + trx_commit_for_mysql(trx); + + row_mysql_unlock_data_dictionary(trx); + + trx->op_info = ""; + + return((int) err); +} + +/************************************************************************* +Truncates a table for MySQL. */ +UNIV_INTERN +int +row_truncate_table_for_mysql( +/*=========================*/ + /* out: error code or DB_SUCCESS */ + dict_table_t* table, /* in: table handle */ + trx_t* trx) /* in: transaction handle */ +{ + dict_foreign_t* foreign; + ulint err; + mem_heap_t* heap; + byte* buf; + dtuple_t* tuple; + dfield_t* dfield; + dict_index_t* sys_index; + btr_pcur_t pcur; + mtr_t mtr; + dulint new_id; + ulint recreate_space = 0; + pars_info_t* info = NULL; + + /* How do we prevent crashes caused by ongoing operations on + the table? Old operations could try to access non-existent + pages. + + 1) SQL queries, INSERT, SELECT, ...: we must get an exclusive + MySQL table lock on the table before we can do TRUNCATE + TABLE. Then there are no running queries on the table. This is + guaranteed, because in ha_innobase::store_lock(), we do not + weaken the TL_WRITE lock requested by MySQL when executing + SQLCOM_TRUNCATE. + + 2) Purge and rollback: we assign a new table id for the + table. Since purge and rollback look for the table based on + the table id, they see the table as 'dropped' and discard + their operations. + + 3) Insert buffer: TRUNCATE TABLE is analogous to DROP TABLE, + so we do not have to remove insert buffer records, as the + insert buffer works at a low level. If a freed page is later + reallocated, the allocator will remove the ibuf entries for + it. + + When we truncate *.ibd files by recreating them (analogous to + DISCARD TABLESPACE), we remove all entries for the table in the + insert buffer tree. This is not strictly necessary, because + in 6) we will assign a new tablespace identifier, but we can + free up some space in the system tablespace. + + 4) Linear readahead and random readahead: we use the same + method as in 3) to discard ongoing operations. (This is only + relevant for TRUNCATE TABLE by DISCARD TABLESPACE.) + + 5) FOREIGN KEY operations: if + table->n_foreign_key_checks_running > 0, we do not allow the + TRUNCATE. We also reserve the data dictionary latch. + + 6) Crash recovery: To prevent the application of pre-truncation + redo log records on the truncated tablespace, we will assign + a new tablespace identifier to the truncated tablespace. */ + + ut_ad(trx->mysql_thread_id == os_thread_get_curr_id()); + ut_ad(table); + + if (srv_created_new_raw) { + fputs("InnoDB: A new raw disk partition was initialized:\n" + "InnoDB: we do not allow database modifications" + " by the user.\n" + "InnoDB: Shut down mysqld and edit my.cnf so that newraw" + " is replaced with raw.\n", stderr); + + return(DB_ERROR); + } + + trx->op_info = "truncating table"; + + trx_start_if_not_started(trx); + + /* Serialize data dictionary operations with dictionary mutex: + no deadlocks can occur then in these operations */ + + ut_a(trx->dict_operation_lock_mode == 0); + /* Prevent foreign key checks etc. while we are truncating the + table */ + + row_mysql_lock_data_dictionary(trx); + + ut_ad(mutex_own(&(dict_sys->mutex))); +#ifdef UNIV_SYNC_DEBUG + ut_ad(rw_lock_own(&dict_operation_lock, RW_LOCK_EX)); +#endif /* UNIV_SYNC_DEBUG */ + + /* Check if the table is referenced by foreign key constraints from + some other table (not the table itself) */ + + foreign = UT_LIST_GET_FIRST(table->referenced_list); + + while (foreign && foreign->foreign_table == table) { + foreign = UT_LIST_GET_NEXT(referenced_list, foreign); + } + + if (foreign && trx->check_foreigns) { + FILE* ef = dict_foreign_err_file; + + /* We only allow truncating a referenced table if + FOREIGN_KEY_CHECKS is set to 0 */ + + mutex_enter(&dict_foreign_err_mutex); + rewind(ef); + ut_print_timestamp(ef); + + fputs(" Cannot truncate table ", ef); + ut_print_name(ef, trx, TRUE, table->name); + fputs(" by DROP+CREATE\n" + "InnoDB: because it is referenced by ", ef); + ut_print_name(ef, trx, TRUE, foreign->foreign_table_name); + putc('\n', ef); + mutex_exit(&dict_foreign_err_mutex); + + err = DB_ERROR; + goto funct_exit; + } + + /* TODO: could we replace the counter n_foreign_key_checks_running + with lock checks on the table? Acquire here an exclusive lock on the + table, and rewrite lock0lock.c and the lock wait in srv0srv.c so that + they can cope with the table having been truncated here? Foreign key + checks take an IS or IX lock on the table. */ + + if (table->n_foreign_key_checks_running > 0) { + ut_print_timestamp(stderr); + fputs(" InnoDB: Cannot truncate table ", stderr); + ut_print_name(stderr, trx, TRUE, table->name); + fputs(" by DROP+CREATE\n" + "InnoDB: because there is a foreign key check" + " running on it.\n", + stderr); + err = DB_ERROR; + + goto funct_exit; + } + + /* Remove all locks except the table-level S and X locks. */ + lock_remove_all_on_table(table, FALSE); + + trx->table_id = table->id; + + if (table->space && !table->dir_path_of_temp_table) { + /* Discard and create the single-table tablespace. */ + ulint space = table->space; + ulint flags = fil_space_get_flags(space); + + if (flags != ULINT_UNDEFINED + && fil_discard_tablespace(space)) { + + dict_index_t* index; + + space = 0; + + if (fil_create_new_single_table_tablespace( + &space, table->name, FALSE, flags, + FIL_IBD_FILE_INITIAL_SIZE) != DB_SUCCESS) { + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: TRUNCATE TABLE %s failed to" + " create a new tablespace\n", + table->name); + table->ibd_file_missing = 1; + err = DB_ERROR; + goto funct_exit; + } + + recreate_space = space; + + /* Replace the space_id in the data dictionary cache. + The persisent data dictionary (SYS_TABLES.SPACE + and SYS_INDEXES.SPACE) are updated later in this + function. */ + table->space = space; + index = dict_table_get_first_index(table); + do { + index->space = space; + index = dict_table_get_next_index(index); + } while (index); + + mtr_start(&mtr); + fsp_header_init(space, + FIL_IBD_FILE_INITIAL_SIZE, &mtr); + mtr_commit(&mtr); + } + } + + /* scan SYS_INDEXES for all indexes of the table */ + heap = mem_heap_create(800); + + tuple = dtuple_create(heap, 1); + dfield = dtuple_get_nth_field(tuple, 0); + + buf = mem_heap_alloc(heap, 8); + mach_write_to_8(buf, table->id); + + dfield_set_data(dfield, buf, 8); + sys_index = dict_table_get_first_index(dict_sys->sys_indexes); + dict_index_copy_types(tuple, sys_index, 1); + + mtr_start(&mtr); + btr_pcur_open_on_user_rec(sys_index, tuple, PAGE_CUR_GE, + BTR_MODIFY_LEAF, &pcur, &mtr); + for (;;) { + rec_t* rec; + const byte* field; + ulint len; + ulint root_page_no; + + if (!btr_pcur_is_on_user_rec(&pcur)) { + /* The end of SYS_INDEXES has been reached. */ + break; + } + + rec = btr_pcur_get_rec(&pcur); + + field = rec_get_nth_field_old(rec, 0, &len); + ut_ad(len == 8); + + if (memcmp(buf, field, len) != 0) { + /* End of indexes for the table (TABLE_ID mismatch). */ + break; + } + + if (rec_get_deleted_flag(rec, FALSE)) { + /* The index has been dropped. */ + goto next_rec; + } + + /* This call may commit and restart mtr + and reposition pcur. */ + root_page_no = dict_truncate_index_tree(table, recreate_space, + &pcur, &mtr); + + rec = btr_pcur_get_rec(&pcur); + + if (root_page_no != FIL_NULL) { + page_rec_write_index_page_no( + rec, DICT_SYS_INDEXES_PAGE_NO_FIELD, + root_page_no, &mtr); + /* We will need to commit and restart the + mini-transaction in order to avoid deadlocks. + The dict_truncate_index_tree() call has allocated + a page in this mini-transaction, and the rest of + this loop could latch another index page. */ + mtr_commit(&mtr); + mtr_start(&mtr); + btr_pcur_restore_position(BTR_MODIFY_LEAF, + &pcur, &mtr); + } + +next_rec: + btr_pcur_move_to_next_user_rec(&pcur, &mtr); + } + + btr_pcur_close(&pcur); + mtr_commit(&mtr); + + mem_heap_free(heap); + + new_id = dict_hdr_get_new_id(DICT_HDR_TABLE_ID); + + info = pars_info_create(); + + pars_info_add_int4_literal(info, "space", (lint) table->space); + pars_info_add_dulint_literal(info, "old_id", table->id); + pars_info_add_dulint_literal(info, "new_id", new_id); + + err = que_eval_sql(info, + "PROCEDURE RENUMBER_TABLESPACE_PROC () IS\n" + "BEGIN\n" + "UPDATE SYS_TABLES" + " SET ID = :new_id, SPACE = :space\n" + " WHERE ID = :old_id;\n" + "UPDATE SYS_COLUMNS SET TABLE_ID = :new_id\n" + " WHERE TABLE_ID = :old_id;\n" + "UPDATE SYS_INDEXES" + " SET TABLE_ID = :new_id, SPACE = :space\n" + " WHERE TABLE_ID = :old_id;\n" + "COMMIT WORK;\n" + "END;\n" + , FALSE, trx); + + if (err != DB_SUCCESS) { + trx->error_state = DB_SUCCESS; + trx_general_rollback_for_mysql(trx, FALSE, NULL); + trx->error_state = DB_SUCCESS; + ut_print_timestamp(stderr); + fputs(" InnoDB: Unable to assign a new identifier to table ", + stderr); + ut_print_name(stderr, trx, TRUE, table->name); + fputs("\n" + "InnoDB: after truncating it. Background processes" + " may corrupt the table!\n", stderr); + err = DB_ERROR; + } else { + dict_table_change_id_in_cache(table, new_id); + } + + /* MySQL calls ha_innobase::reset_auto_increment() which does + the same thing. */ + dict_table_autoinc_lock(table); + dict_table_autoinc_initialize(table, 1); + dict_table_autoinc_unlock(table); + dict_update_statistics(table); + + trx_commit_for_mysql(trx); + +funct_exit: + + row_mysql_unlock_data_dictionary(trx); + + trx->op_info = ""; + + srv_wake_master_thread(); + + return((int) err); +} + +/************************************************************************* +Drops a table for MySQL. If the name of the dropped table ends in +one of "innodb_monitor", "innodb_lock_monitor", "innodb_tablespace_monitor", +"innodb_table_monitor", then this will also stop the printing of monitor +output by the master thread. If the data dictionary was not already locked +by the transaction, the transaction will be committed. Otherwise, the +data dictionary will remain locked. */ +UNIV_INTERN +int +row_drop_table_for_mysql( +/*=====================*/ + /* out: error code or DB_SUCCESS */ + const char* name, /* in: table name */ + trx_t* trx, /* in: transaction handle */ + ibool drop_db)/* in: TRUE=dropping whole database */ +{ + dict_foreign_t* foreign; + dict_table_t* table; + ulint space_id; + ulint err; + const char* table_name; + ulint namelen; + ibool locked_dictionary = FALSE; + pars_info_t* info = NULL; + + ut_a(name != NULL); + + if (srv_created_new_raw) { + fputs("InnoDB: A new raw disk partition was initialized:\n" + "InnoDB: we do not allow database modifications" + " by the user.\n" + "InnoDB: Shut down mysqld and edit my.cnf so that newraw" + " is replaced with raw.\n", stderr); + + return(DB_ERROR); + } + + trx->op_info = "dropping table"; + + trx_start_if_not_started(trx); + + /* The table name is prefixed with the database name and a '/'. + Certain table names starting with 'innodb_' have their special + meaning regardless of the database name. Thus, we need to + ignore the database name prefix in the comparisons. */ + table_name = strchr(name, '/'); + ut_a(table_name); + table_name++; + namelen = strlen(table_name) + 1; + + if (namelen == sizeof S_innodb_monitor + && !memcmp(table_name, S_innodb_monitor, + sizeof S_innodb_monitor)) { + + /* Table name equals "innodb_monitor": + stop monitor prints */ + + srv_print_innodb_monitor = FALSE; + srv_print_innodb_lock_monitor = FALSE; + } else if (namelen == sizeof S_innodb_lock_monitor + && !memcmp(table_name, S_innodb_lock_monitor, + sizeof S_innodb_lock_monitor)) { + srv_print_innodb_monitor = FALSE; + srv_print_innodb_lock_monitor = FALSE; + } else if (namelen == sizeof S_innodb_tablespace_monitor + && !memcmp(table_name, S_innodb_tablespace_monitor, + sizeof S_innodb_tablespace_monitor)) { + + srv_print_innodb_tablespace_monitor = FALSE; + } else if (namelen == sizeof S_innodb_table_monitor + && !memcmp(table_name, S_innodb_table_monitor, + sizeof S_innodb_table_monitor)) { + + srv_print_innodb_table_monitor = FALSE; + } + + /* Serialize data dictionary operations with dictionary mutex: + no deadlocks can occur then in these operations */ + + if (trx->dict_operation_lock_mode != RW_X_LATCH) { + /* Prevent foreign key checks etc. while we are dropping the + table */ + + row_mysql_lock_data_dictionary(trx); + + locked_dictionary = TRUE; + } + + ut_ad(mutex_own(&(dict_sys->mutex))); +#ifdef UNIV_SYNC_DEBUG + ut_ad(rw_lock_own(&dict_operation_lock, RW_LOCK_EX)); +#endif /* UNIV_SYNC_DEBUG */ + + table = dict_table_get_low(name); + + if (!table) { + err = DB_TABLE_NOT_FOUND; + ut_print_timestamp(stderr); + + fputs(" InnoDB: Error: table ", stderr); + ut_print_name(stderr, trx, TRUE, name); + fputs(" does not exist in the InnoDB internal\n" + "InnoDB: data dictionary though MySQL is" + " trying to drop it.\n" + "InnoDB: Have you copied the .frm file" + " of the table to the\n" + "InnoDB: MySQL database directory" + " from another database?\n" + "InnoDB: You can look for further help from\n" + "InnoDB: http://dev.mysql.com/doc/refman/5.1/en/" + "innodb-troubleshooting.html\n", + stderr); + goto funct_exit; + } + + /* Check if the table is referenced by foreign key constraints from + some other table (not the table itself) */ + + foreign = UT_LIST_GET_FIRST(table->referenced_list); + + while (foreign && foreign->foreign_table == table) { +check_next_foreign: + foreign = UT_LIST_GET_NEXT(referenced_list, foreign); + } + + if (foreign && trx->check_foreigns + && !(drop_db && dict_tables_have_same_db( + name, foreign->foreign_table_name))) { + FILE* ef = dict_foreign_err_file; + + /* We only allow dropping a referenced table if + FOREIGN_KEY_CHECKS is set to 0 */ + + err = DB_CANNOT_DROP_CONSTRAINT; + + mutex_enter(&dict_foreign_err_mutex); + rewind(ef); + ut_print_timestamp(ef); + + fputs(" Cannot drop table ", ef); + ut_print_name(ef, trx, TRUE, name); + fputs("\n" + "because it is referenced by ", ef); + ut_print_name(ef, trx, TRUE, foreign->foreign_table_name); + putc('\n', ef); + mutex_exit(&dict_foreign_err_mutex); + + goto funct_exit; + } + + if (foreign && trx->check_foreigns) { + goto check_next_foreign; + } + + if (table->n_mysql_handles_opened > 0) { + ibool added; + + added = row_add_table_to_background_drop_list(table->name); + + if (added) { + ut_print_timestamp(stderr); + fputs(" InnoDB: Warning: MySQL is" + " trying to drop table ", stderr); + ut_print_name(stderr, trx, TRUE, table->name); + fputs("\n" + "InnoDB: though there are still" + " open handles to it.\n" + "InnoDB: Adding the table to the" + " background drop queue.\n", + stderr); + + /* We return DB_SUCCESS to MySQL though the drop will + happen lazily later */ + err = DB_SUCCESS; + } else { + /* The table is already in the background drop list */ + err = DB_ERROR; + } + + goto funct_exit; + } + + /* TODO: could we replace the counter n_foreign_key_checks_running + with lock checks on the table? Acquire here an exclusive lock on the + table, and rewrite lock0lock.c and the lock wait in srv0srv.c so that + they can cope with the table having been dropped here? Foreign key + checks take an IS or IX lock on the table. */ + + if (table->n_foreign_key_checks_running > 0) { + + const char* table_name = table->name; + ibool added; + + added = row_add_table_to_background_drop_list(table_name); + + if (added) { + ut_print_timestamp(stderr); + fputs(" InnoDB: You are trying to drop table ", + stderr); + ut_print_name(stderr, trx, TRUE, table_name); + fputs("\n" + "InnoDB: though there is a" + " foreign key check running on it.\n" + "InnoDB: Adding the table to" + " the background drop queue.\n", + stderr); + + /* We return DB_SUCCESS to MySQL though the drop will + happen lazily later */ + + err = DB_SUCCESS; + } else { + /* The table is already in the background drop list */ + err = DB_ERROR; + } + + goto funct_exit; + } + + /* Remove all locks there are on the table or its records */ + lock_remove_all_on_table(table, TRUE); + + trx_set_dict_operation(trx, TRX_DICT_OP_TABLE); + trx->table_id = table->id; + + /* We use the private SQL parser of Innobase to generate the + query graphs needed in deleting the dictionary data from system + tables in Innobase. Deleting a row from SYS_INDEXES table also + frees the file segments of the B-tree associated with the index. */ + + info = pars_info_create(); + + pars_info_add_str_literal(info, "table_name", name); + + err = que_eval_sql(info, + "PROCEDURE DROP_TABLE_PROC () IS\n" + "sys_foreign_id CHAR;\n" + "table_id CHAR;\n" + "index_id CHAR;\n" + "foreign_id CHAR;\n" + "found INT;\n" + "BEGIN\n" + "SELECT ID INTO table_id\n" + "FROM SYS_TABLES\n" + "WHERE NAME = :table_name\n" + "LOCK IN SHARE MODE;\n" + "IF (SQL % NOTFOUND) THEN\n" + " RETURN;\n" + "END IF;\n" + "found := 1;\n" + "SELECT ID INTO sys_foreign_id\n" + "FROM SYS_TABLES\n" + "WHERE NAME = 'SYS_FOREIGN'\n" + "LOCK IN SHARE MODE;\n" + "IF (SQL % NOTFOUND) THEN\n" + " found := 0;\n" + "END IF;\n" + "IF (:table_name = 'SYS_FOREIGN') THEN\n" + " found := 0;\n" + "END IF;\n" + "IF (:table_name = 'SYS_FOREIGN_COLS') THEN\n" + " found := 0;\n" + "END IF;\n" + "WHILE found = 1 LOOP\n" + " SELECT ID INTO foreign_id\n" + " FROM SYS_FOREIGN\n" + " WHERE FOR_NAME = :table_name\n" + " AND TO_BINARY(FOR_NAME)\n" + " = TO_BINARY(:table_name)\n" + " LOCK IN SHARE MODE;\n" + " IF (SQL % NOTFOUND) THEN\n" + " found := 0;\n" + " ELSE\n" + " DELETE FROM SYS_FOREIGN_COLS\n" + " WHERE ID = foreign_id;\n" + " DELETE FROM SYS_FOREIGN\n" + " WHERE ID = foreign_id;\n" + " END IF;\n" + "END LOOP;\n" + "found := 1;\n" + "WHILE found = 1 LOOP\n" + " SELECT ID INTO index_id\n" + " FROM SYS_INDEXES\n" + " WHERE TABLE_ID = table_id\n" + " LOCK IN SHARE MODE;\n" + " IF (SQL % NOTFOUND) THEN\n" + " found := 0;\n" + " ELSE\n" + " DELETE FROM SYS_FIELDS\n" + " WHERE INDEX_ID = index_id;\n" + " DELETE FROM SYS_INDEXES\n" + " WHERE ID = index_id\n" + " AND TABLE_ID = table_id;\n" + " END IF;\n" + "END LOOP;\n" + "DELETE FROM SYS_COLUMNS\n" + "WHERE TABLE_ID = table_id;\n" + "DELETE FROM SYS_TABLES\n" + "WHERE ID = table_id;\n" + "END;\n" + , FALSE, trx); + + if (err != DB_SUCCESS) { + ut_a(err == DB_OUT_OF_FILE_SPACE); + + err = DB_MUST_GET_MORE_FILE_SPACE; + + row_mysql_handle_errors(&err, trx, NULL, NULL); + + ut_error; + } else { + ibool is_path; + const char* name_or_path; + mem_heap_t* heap; + + heap = mem_heap_create(200); + + /* Clone the name, in case it has been allocated + from table->heap, which will be freed by + dict_table_remove_from_cache(table) below. */ + name = mem_heap_strdup(heap, name); + space_id = table->space; + + if (table->dir_path_of_temp_table != NULL) { + is_path = TRUE; + name_or_path = mem_heap_strdup( + heap, table->dir_path_of_temp_table); + } else { + is_path = FALSE; + name_or_path = name; + } + + dict_table_remove_from_cache(table); + + if (dict_load_table(name) != NULL) { + ut_print_timestamp(stderr); + fputs(" InnoDB: Error: not able to remove table ", + stderr); + ut_print_name(stderr, trx, TRUE, name); + fputs(" from the dictionary cache!\n", stderr); + err = DB_ERROR; + } + + /* Do not drop possible .ibd tablespace if something went + wrong: we do not want to delete valuable data of the user */ + + if (err == DB_SUCCESS && space_id > 0) { + if (!fil_space_for_table_exists_in_mem(space_id, + name_or_path, + is_path, + FALSE, TRUE)) { + err = DB_SUCCESS; + + fprintf(stderr, + "InnoDB: We removed now the InnoDB" + " internal data dictionary entry\n" + "InnoDB: of table "); + ut_print_name(stderr, trx, TRUE, name); + fprintf(stderr, ".\n"); + } else if (!fil_delete_tablespace(space_id)) { + fprintf(stderr, + "InnoDB: We removed now the InnoDB" + " internal data dictionary entry\n" + "InnoDB: of table "); + ut_print_name(stderr, trx, TRUE, name); + fprintf(stderr, ".\n"); + + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: Error: not able to" + " delete tablespace %lu of table ", + (ulong) space_id); + ut_print_name(stderr, trx, TRUE, name); + fputs("!\n", stderr); + err = DB_ERROR; + } + } + + mem_heap_free(heap); + } +funct_exit: + + if (locked_dictionary) { + trx_commit_for_mysql(trx); + + row_mysql_unlock_data_dictionary(trx); + } + + trx->op_info = ""; + +#ifndef UNIV_HOTBACKUP + srv_wake_master_thread(); +#endif /* !UNIV_HOTBACKUP */ + + return((int) err); +} + +/*********************************************************************** +Drop all foreign keys in a database, see Bug#18942. +Called at the end of row_drop_database_for_mysql(). */ +static +ulint +drop_all_foreign_keys_in_db( +/*========================*/ + /* out: error code or DB_SUCCESS */ + const char* name, /* in: database name which ends to '/' */ + trx_t* trx) /* in: transaction handle */ +{ + pars_info_t* pinfo; + ulint err; + + ut_a(name[strlen(name) - 1] == '/'); + + pinfo = pars_info_create(); + + pars_info_add_str_literal(pinfo, "dbname", name); + +/* true if for_name is not prefixed with dbname */ +#define TABLE_NOT_IN_THIS_DB \ +"SUBSTR(for_name, 0, LENGTH(:dbname)) <> :dbname" + + err = que_eval_sql(pinfo, + "PROCEDURE DROP_ALL_FOREIGN_KEYS_PROC () IS\n" + "foreign_id CHAR;\n" + "for_name CHAR;\n" + "found INT;\n" + "DECLARE CURSOR cur IS\n" + "SELECT ID, FOR_NAME FROM SYS_FOREIGN\n" + "WHERE FOR_NAME >= :dbname\n" + "LOCK IN SHARE MODE\n" + "ORDER BY FOR_NAME;\n" + "BEGIN\n" + "found := 1;\n" + "OPEN cur;\n" + "WHILE found = 1 LOOP\n" + " FETCH cur INTO foreign_id, for_name;\n" + " IF (SQL % NOTFOUND) THEN\n" + " found := 0;\n" + " ELSIF (" TABLE_NOT_IN_THIS_DB ") THEN\n" + " found := 0;\n" + " ELSIF (1=1) THEN\n" + " DELETE FROM SYS_FOREIGN_COLS\n" + " WHERE ID = foreign_id;\n" + " DELETE FROM SYS_FOREIGN\n" + " WHERE ID = foreign_id;\n" + " END IF;\n" + "END LOOP;\n" + "CLOSE cur;\n" + "COMMIT WORK;\n" + "END;\n", + FALSE, /* do not reserve dict mutex, + we are already holding it */ + trx); + + return(err); +} + +/************************************************************************* +Drops a database for MySQL. */ +UNIV_INTERN +int +row_drop_database_for_mysql( +/*========================*/ + /* out: error code or DB_SUCCESS */ + const char* name, /* in: database name which ends to '/' */ + trx_t* trx) /* in: transaction handle */ +{ + dict_table_t* table; + char* table_name; + int err = DB_SUCCESS; + ulint namelen = strlen(name); + + ut_ad(trx->mysql_thread_id == os_thread_get_curr_id()); + ut_a(name != NULL); + ut_a(name[namelen - 1] == '/'); + + trx->op_info = "dropping database"; + + trx_start_if_not_started(trx); +loop: + row_mysql_lock_data_dictionary(trx); + + while ((table_name = dict_get_first_table_name_in_db(name))) { + ut_a(memcmp(table_name, name, namelen) == 0); + + table = dict_table_get_low(table_name); + + ut_a(table); + + /* Wait until MySQL does not have any queries running on + the table */ + + if (table->n_mysql_handles_opened > 0) { + row_mysql_unlock_data_dictionary(trx); + + ut_print_timestamp(stderr); + fputs(" InnoDB: Warning: MySQL is trying to" + " drop database ", stderr); + ut_print_name(stderr, trx, TRUE, name); + fputs("\n" + "InnoDB: though there are still" + " open handles to table ", stderr); + ut_print_name(stderr, trx, TRUE, table_name); + fputs(".\n", stderr); + + os_thread_sleep(1000000); + + mem_free(table_name); + + goto loop; + } + + err = row_drop_table_for_mysql(table_name, trx, TRUE); + trx_commit_for_mysql(trx); + + if (err != DB_SUCCESS) { + fputs("InnoDB: DROP DATABASE ", stderr); + ut_print_name(stderr, trx, TRUE, name); + fprintf(stderr, " failed with error %lu for table ", + (ulint) err); + ut_print_name(stderr, trx, TRUE, table_name); + putc('\n', stderr); + mem_free(table_name); + break; + } + + mem_free(table_name); + } + + if (err == DB_SUCCESS) { + /* after dropping all tables try to drop all leftover + foreign keys in case orphaned ones exist */ + err = (int) drop_all_foreign_keys_in_db(name, trx); + + if (err != DB_SUCCESS) { + fputs("InnoDB: DROP DATABASE ", stderr); + ut_print_name(stderr, trx, TRUE, name); + fprintf(stderr, " failed with error %d while " + "dropping all foreign keys", err); + } + } + + trx_commit_for_mysql(trx); + + row_mysql_unlock_data_dictionary(trx); + + trx->op_info = ""; + + return(err); +} + +/************************************************************************* +Checks if a table name contains the string "/#sql" which denotes temporary +tables in MySQL. */ +static +ibool +row_is_mysql_tmp_table_name( +/*========================*/ + /* out: TRUE if temporary table */ + const char* name) /* in: table name in the form + 'database/tablename' */ +{ + return(strstr(name, "/#sql") != NULL); + /* return(strstr(name, "/@0023sql") != NULL); */ +} + +/******************************************************************** +Delete a single constraint. */ +static +int +row_delete_constraint_low( +/*======================*/ + /* out: error code or DB_SUCCESS */ + const char* id, /* in: constraint id */ + trx_t* trx) /* in: transaction handle */ +{ + pars_info_t* info = pars_info_create(); + + pars_info_add_str_literal(info, "id", id); + + return((int) que_eval_sql(info, + "PROCEDURE DELETE_CONSTRAINT () IS\n" + "BEGIN\n" + "DELETE FROM SYS_FOREIGN_COLS WHERE ID = :id;\n" + "DELETE FROM SYS_FOREIGN WHERE ID = :id;\n" + "END;\n" + , FALSE, trx)); +} + +/******************************************************************** +Delete a single constraint. */ +static +int +row_delete_constraint( +/*==================*/ + /* out: error code or DB_SUCCESS */ + const char* id, /* in: constraint id */ + const char* database_name, /* in: database name, with the + trailing '/' */ + mem_heap_t* heap, /* in: memory heap */ + trx_t* trx) /* in: transaction handle */ +{ + ulint err; + + /* New format constraints have ids <databasename>/<constraintname>. */ + err = row_delete_constraint_low( + mem_heap_strcat(heap, database_name, id), trx); + + if ((err == DB_SUCCESS) && !strchr(id, '/')) { + /* Old format < 4.0.18 constraints have constraint ids + <number>_<number>. We only try deleting them if the + constraint name does not contain a '/' character, otherwise + deleting a new format constraint named 'foo/bar' from + database 'baz' would remove constraint 'bar' from database + 'foo', if it existed. */ + + err = row_delete_constraint_low(id, trx); + } + + return((int) err); +} + +/************************************************************************* +Renames a table for MySQL. */ +UNIV_INTERN +ulint +row_rename_table_for_mysql( +/*=======================*/ + /* out: error code or DB_SUCCESS */ + const char* old_name, /* in: old table name */ + const char* new_name, /* in: new table name */ + trx_t* trx, /* in: transaction handle */ + ibool commit) /* in: if TRUE then commit trx */ +{ + dict_table_t* table; + ulint err = DB_ERROR; + mem_heap_t* heap = NULL; + const char** constraints_to_drop = NULL; + ulint n_constraints_to_drop = 0; + ibool old_is_tmp, new_is_tmp; + pars_info_t* info = NULL; + + ut_ad(trx->mysql_thread_id == os_thread_get_curr_id()); + ut_a(old_name != NULL); + ut_a(new_name != NULL); + + if (srv_created_new_raw || srv_force_recovery) { + fputs("InnoDB: A new raw disk partition was initialized or\n" + "InnoDB: innodb_force_recovery is on: we do not allow\n" + "InnoDB: database modifications by the user. Shut down\n" + "InnoDB: mysqld and edit my.cnf so that newraw" + " is replaced\n" + "InnoDB: with raw, and innodb_force_... is removed.\n", + stderr); + + goto funct_exit; + } else if (row_mysql_is_system_table(new_name)) { + + fprintf(stderr, + "InnoDB: Error: trying to create a MySQL" + " system table %s of type InnoDB.\n" + "InnoDB: MySQL system tables must be" + " of the MyISAM type!\n", + new_name); + + goto funct_exit; + } + + trx->op_info = "renaming table"; + trx_start_if_not_started(trx); + + old_is_tmp = row_is_mysql_tmp_table_name(old_name); + new_is_tmp = row_is_mysql_tmp_table_name(new_name); + + table = dict_table_get_low(old_name); + + if (!table) { + err = DB_TABLE_NOT_FOUND; + ut_print_timestamp(stderr); + + fputs(" InnoDB: Error: table ", stderr); + ut_print_name(stderr, trx, TRUE, old_name); + fputs(" does not exist in the InnoDB internal\n" + "InnoDB: data dictionary though MySQL is" + " trying to rename the table.\n" + "InnoDB: Have you copied the .frm file" + " of the table to the\n" + "InnoDB: MySQL database directory" + " from another database?\n" + "InnoDB: You can look for further help from\n" + "InnoDB: http://dev.mysql.com/doc/refman/5.1/en/" + "innodb-troubleshooting.html\n", + stderr); + goto funct_exit; + } else if (table->ibd_file_missing) { + err = DB_TABLE_NOT_FOUND; + ut_print_timestamp(stderr); + + fputs(" InnoDB: Error: table ", stderr); + ut_print_name(stderr, trx, TRUE, old_name); + fputs(" does not have an .ibd file" + " in the database directory.\n" + "InnoDB: You can look for further help from\n" + "InnoDB: http://dev.mysql.com/doc/refman/5.1/en/" + "innodb-troubleshooting.html\n", + stderr); + goto funct_exit; + } else if (new_is_tmp) { + /* MySQL is doing an ALTER TABLE command and it renames the + original table to a temporary table name. We want to preserve + the original foreign key constraint definitions despite the + name change. An exception is those constraints for which + the ALTER TABLE contained DROP FOREIGN KEY <foreign key id>.*/ + + heap = mem_heap_create(100); + + err = dict_foreign_parse_drop_constraints( + heap, trx, table, &n_constraints_to_drop, + &constraints_to_drop); + + if (err != DB_SUCCESS) { + + goto funct_exit; + } + } + + /* We use the private SQL parser of Innobase to generate the query + graphs needed in updating the dictionary data from system tables. */ + + info = pars_info_create(); + + pars_info_add_str_literal(info, "new_table_name", new_name); + pars_info_add_str_literal(info, "old_table_name", old_name); + + err = que_eval_sql(info, + "PROCEDURE RENAME_TABLE () IS\n" + "BEGIN\n" + "UPDATE SYS_TABLES SET NAME = :new_table_name\n" + " WHERE NAME = :old_table_name;\n" + "END;\n" + , FALSE, trx); + + if (err != DB_SUCCESS) { + + goto end; + } else if (!new_is_tmp) { + /* Rename all constraints. */ + + info = pars_info_create(); + + pars_info_add_str_literal(info, "new_table_name", new_name); + pars_info_add_str_literal(info, "old_table_name", old_name); + + err = que_eval_sql( + info, + "PROCEDURE RENAME_CONSTRAINT_IDS () IS\n" + "gen_constr_prefix CHAR;\n" + "new_db_name CHAR;\n" + "foreign_id CHAR;\n" + "new_foreign_id CHAR;\n" + "old_db_name_len INT;\n" + "old_t_name_len INT;\n" + "new_db_name_len INT;\n" + "id_len INT;\n" + "found INT;\n" + "BEGIN\n" + "found := 1;\n" + "old_db_name_len := INSTR(:old_table_name, '/')-1;\n" + "new_db_name_len := INSTR(:new_table_name, '/')-1;\n" + "new_db_name := SUBSTR(:new_table_name, 0,\n" + " new_db_name_len);\n" + "old_t_name_len := LENGTH(:old_table_name);\n" + "gen_constr_prefix := CONCAT(:old_table_name,\n" + " '_ibfk_');\n" + "WHILE found = 1 LOOP\n" + " SELECT ID INTO foreign_id\n" + " FROM SYS_FOREIGN\n" + " WHERE FOR_NAME = :old_table_name\n" + " AND TO_BINARY(FOR_NAME)\n" + " = TO_BINARY(:old_table_name)\n" + " LOCK IN SHARE MODE;\n" + " IF (SQL % NOTFOUND) THEN\n" + " found := 0;\n" + " ELSE\n" + " UPDATE SYS_FOREIGN\n" + " SET FOR_NAME = :new_table_name\n" + " WHERE ID = foreign_id;\n" + " id_len := LENGTH(foreign_id);\n" + " IF (INSTR(foreign_id, '/') > 0) THEN\n" + " IF (INSTR(foreign_id,\n" + " gen_constr_prefix) > 0)\n" + " THEN\n" + " new_foreign_id :=\n" + " CONCAT(:new_table_name,\n" + " SUBSTR(foreign_id, old_t_name_len,\n" + " id_len - old_t_name_len));\n" + " ELSE\n" + " new_foreign_id :=\n" + " CONCAT(new_db_name,\n" + " SUBSTR(foreign_id,\n" + " old_db_name_len,\n" + " id_len - old_db_name_len));\n" + " END IF;\n" + " UPDATE SYS_FOREIGN\n" + " SET ID = new_foreign_id\n" + " WHERE ID = foreign_id;\n" + " UPDATE SYS_FOREIGN_COLS\n" + " SET ID = new_foreign_id\n" + " WHERE ID = foreign_id;\n" + " END IF;\n" + " END IF;\n" + "END LOOP;\n" + "UPDATE SYS_FOREIGN SET REF_NAME = :new_table_name\n" + "WHERE REF_NAME = :old_table_name\n" + " AND TO_BINARY(REF_NAME)\n" + " = TO_BINARY(:old_table_name);\n" + "END;\n" + , FALSE, trx); + + } else if (n_constraints_to_drop > 0) { + /* Drop some constraints of tmp tables. */ + + ulint db_name_len = dict_get_db_name_len(old_name) + 1; + char* db_name = mem_heap_strdupl(heap, old_name, + db_name_len); + ulint i; + + for (i = 0; i < n_constraints_to_drop; i++) { + err = row_delete_constraint(constraints_to_drop[i], + db_name, heap, trx); + + if (err != DB_SUCCESS) { + break; + } + } + } + +end: + if (err != DB_SUCCESS) { + if (err == DB_DUPLICATE_KEY) { + ut_print_timestamp(stderr); + fputs(" InnoDB: Error; possible reasons:\n" + "InnoDB: 1) Table rename would cause" + " two FOREIGN KEY constraints\n" + "InnoDB: to have the same internal name" + " in case-insensitive comparison.\n" + "InnoDB: 2) table ", stderr); + ut_print_name(stderr, trx, TRUE, new_name); + fputs(" exists in the InnoDB internal data\n" + "InnoDB: dictionary though MySQL is" + " trying to rename table ", stderr); + ut_print_name(stderr, trx, TRUE, old_name); + fputs(" to it.\n" + "InnoDB: Have you deleted the .frm file" + " and not used DROP TABLE?\n" + "InnoDB: You can look for further help from\n" + "InnoDB: http://dev.mysql.com/doc/refman/5.1/en/" + "innodb-troubleshooting.html\n" + "InnoDB: If table ", stderr); + ut_print_name(stderr, trx, TRUE, new_name); + fputs(" is a temporary table #sql..., then" + " it can be that\n" + "InnoDB: there are still queries running" + " on the table, and it will be\n" + "InnoDB: dropped automatically when" + " the queries end.\n" + "InnoDB: You can drop the orphaned table" + " inside InnoDB by\n" + "InnoDB: creating an InnoDB table with" + " the same name in another\n" + "InnoDB: database and copying the .frm file" + " to the current database.\n" + "InnoDB: Then MySQL thinks the table exists," + " and DROP TABLE will\n" + "InnoDB: succeed.\n", stderr); + } + trx->error_state = DB_SUCCESS; + trx_general_rollback_for_mysql(trx, FALSE, NULL); + trx->error_state = DB_SUCCESS; + } else { + /* The following call will also rename the .ibd data file if + the table is stored in a single-table tablespace */ + + if (!dict_table_rename_in_cache(table, new_name, + !new_is_tmp)) { + trx->error_state = DB_SUCCESS; + trx_general_rollback_for_mysql(trx, FALSE, NULL); + trx->error_state = DB_SUCCESS; + goto funct_exit; + } + + /* We only want to switch off some of the type checking in + an ALTER, not in a RENAME. */ + + err = dict_load_foreigns( + new_name, !old_is_tmp || trx->check_foreigns); + + if (err != DB_SUCCESS) { + ut_print_timestamp(stderr); + + if (old_is_tmp) { + fputs(" InnoDB: Error: in ALTER TABLE ", + stderr); + ut_print_name(stderr, trx, TRUE, new_name); + fputs("\n" + "InnoDB: has or is referenced" + " in foreign key constraints\n" + "InnoDB: which are not compatible" + " with the new table definition.\n", + stderr); + } else { + fputs(" InnoDB: Error: in RENAME TABLE" + " table ", + stderr); + ut_print_name(stderr, trx, TRUE, new_name); + fputs("\n" + "InnoDB: is referenced in" + " foreign key constraints\n" + "InnoDB: which are not compatible" + " with the new table definition.\n", + stderr); + } + + ut_a(dict_table_rename_in_cache(table, + old_name, FALSE)); + trx->error_state = DB_SUCCESS; + trx_general_rollback_for_mysql(trx, FALSE, NULL); + trx->error_state = DB_SUCCESS; + } + } + +funct_exit: + + if (commit) { + trx_commit_for_mysql(trx); + } + + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } + + trx->op_info = ""; + + return(err); +} + +/************************************************************************* +Checks that the index contains entries in an ascending order, unique +constraint is not broken, and calculates the number of index entries +in the read view of the current transaction. */ +static +ibool +row_scan_and_check_index( +/*=====================*/ + /* out: TRUE if ok */ + row_prebuilt_t* prebuilt, /* in: prebuilt struct in MySQL */ + dict_index_t* index, /* in: index */ + ulint* n_rows) /* out: number of entries seen in the + current consistent read */ +{ + dtuple_t* prev_entry = NULL; + ulint matched_fields; + ulint matched_bytes; + byte* buf; + ulint ret; + rec_t* rec; + ibool is_ok = TRUE; + int cmp; + ibool contains_null; + ulint i; + ulint cnt; + mem_heap_t* heap = NULL; + ulint n_ext; + ulint offsets_[REC_OFFS_NORMAL_SIZE]; + ulint* offsets; + rec_offs_init(offsets_); + + *n_rows = 0; + + buf = mem_alloc(UNIV_PAGE_SIZE); + heap = mem_heap_create(100); + + /* Make a dummy template in prebuilt, which we will use + in scanning the index entries */ + + prebuilt->index = index; + prebuilt->sql_stat_start = TRUE; + prebuilt->template_type = ROW_MYSQL_DUMMY_TEMPLATE; + prebuilt->n_template = 0; + prebuilt->need_to_access_clustered = FALSE; + + dtuple_set_n_fields(prebuilt->search_tuple, 0); + + prebuilt->select_lock_type = LOCK_NONE; + cnt = 1000; + + ret = row_search_for_mysql(buf, PAGE_CUR_G, prebuilt, 0, 0); +loop: + /* Check thd->killed every 1,000 scanned rows */ + if (--cnt == 0) { + if (trx_is_interrupted(prebuilt->trx)) { + goto func_exit; + } + cnt = 1000; + } + if (ret != DB_SUCCESS) { +func_exit: + mem_free(buf); + mem_heap_free(heap); + + return(is_ok); + } + + *n_rows = *n_rows + 1; + + /* row_search... returns the index record in buf, record origin offset + within buf stored in the first 4 bytes, because we have built a dummy + template */ + + rec = buf + mach_read_from_4(buf); + + offsets = rec_get_offsets(rec, index, offsets_, + ULINT_UNDEFINED, &heap); + + if (prev_entry != NULL) { + matched_fields = 0; + matched_bytes = 0; + + cmp = cmp_dtuple_rec_with_match(prev_entry, rec, offsets, + &matched_fields, + &matched_bytes); + contains_null = FALSE; + + /* In a unique secondary index we allow equal key values if + they contain SQL NULLs */ + + for (i = 0; + i < dict_index_get_n_ordering_defined_by_user(index); + i++) { + if (UNIV_SQL_NULL == dfield_get_len( + dtuple_get_nth_field(prev_entry, i))) { + + contains_null = TRUE; + } + } + + if (cmp > 0) { + fputs("InnoDB: index records in a wrong order in ", + stderr); +not_ok: + dict_index_name_print(stderr, + prebuilt->trx, index); + fputs("\n" + "InnoDB: prev record ", stderr); + dtuple_print(stderr, prev_entry); + fputs("\n" + "InnoDB: record ", stderr); + rec_print_new(stderr, rec, offsets); + putc('\n', stderr); + is_ok = FALSE; + } else if (dict_index_is_unique(index) + && !contains_null + && matched_fields + >= dict_index_get_n_ordering_defined_by_user( + index)) { + + fputs("InnoDB: duplicate key in ", stderr); + goto not_ok; + } + } + + { + mem_heap_t* tmp_heap = NULL; + + /* Empty the heap on each round. But preserve offsets[] + for the row_rec_to_index_entry() call, by copying them + into a separate memory heap when needed. */ + if (UNIV_UNLIKELY(offsets != offsets_)) { + ulint size = rec_offs_get_n_alloc(offsets) + * sizeof *offsets; + + tmp_heap = mem_heap_create(size); + offsets = mem_heap_dup(tmp_heap, offsets, size); + } + + mem_heap_empty(heap); + + prev_entry = row_rec_to_index_entry(ROW_COPY_DATA, rec, + index, offsets, + &n_ext, heap); + + if (UNIV_LIKELY_NULL(tmp_heap)) { + mem_heap_free(tmp_heap); + } + } + + ret = row_search_for_mysql(buf, PAGE_CUR_G, prebuilt, 0, ROW_SEL_NEXT); + + goto loop; +} + +/************************************************************************* +Checks a table for corruption. */ +UNIV_INTERN +ulint +row_check_table_for_mysql( +/*======================*/ + /* out: DB_ERROR or DB_SUCCESS */ + row_prebuilt_t* prebuilt) /* in: prebuilt struct in MySQL + handle */ +{ + dict_table_t* table = prebuilt->table; + dict_index_t* index; + ulint n_rows; + ulint n_rows_in_table = ULINT_UNDEFINED; + ulint ret = DB_SUCCESS; + ulint old_isolation_level; + + if (table->ibd_file_missing) { + ut_print_timestamp(stderr); + fprintf(stderr, " InnoDB: Error:\n" + "InnoDB: MySQL is trying to use a table handle" + " but the .ibd file for\n" + "InnoDB: table %s does not exist.\n" + "InnoDB: Have you deleted the .ibd file" + " from the database directory under\n" + "InnoDB: the MySQL datadir, or have you" + " used DISCARD TABLESPACE?\n" + "InnoDB: Look from\n" + "InnoDB: http://dev.mysql.com/doc/refman/5.1/en/" + "innodb-troubleshooting.html\n" + "InnoDB: how you can resolve the problem.\n", + table->name); + return(DB_ERROR); + } + + prebuilt->trx->op_info = "checking table"; + + old_isolation_level = prebuilt->trx->isolation_level; + + /* We must run the index record counts at an isolation level + >= READ COMMITTED, because a dirty read can see a wrong number + of records in some index; to play safe, we use always + REPEATABLE READ here */ + + prebuilt->trx->isolation_level = TRX_ISO_REPEATABLE_READ; + + /* Enlarge the fatal lock wait timeout during CHECK TABLE. */ + mutex_enter(&kernel_mutex); + srv_fatal_semaphore_wait_threshold += 7200; /* 2 hours */ + mutex_exit(&kernel_mutex); + + index = dict_table_get_first_index(table); + + while (index != NULL) { + /* fputs("Validating index ", stderr); + ut_print_name(stderr, trx, FALSE, index->name); + putc('\n', stderr); */ + + if (!btr_validate_index(index, prebuilt->trx)) { + ret = DB_ERROR; + } else { + if (!row_scan_and_check_index(prebuilt,index, &n_rows)){ + ret = DB_ERROR; + } + + if (trx_is_interrupted(prebuilt->trx)) { + break; + } + + /* fprintf(stderr, "%lu entries in index %s\n", n_rows, + index->name); */ + + if (index == dict_table_get_first_index(table)) { + n_rows_in_table = n_rows; + } else if (n_rows != n_rows_in_table) { + + ret = DB_ERROR; + + fputs("Error: ", stderr); + dict_index_name_print(stderr, + prebuilt->trx, index); + fprintf(stderr, + " contains %lu entries," + " should be %lu\n", + (ulong) n_rows, + (ulong) n_rows_in_table); + } + } + + index = dict_table_get_next_index(index); + } + + /* Restore the original isolation level */ + prebuilt->trx->isolation_level = old_isolation_level; + + /* We validate also the whole adaptive hash index for all tables + at every CHECK TABLE */ + + if (!btr_search_validate()) { + + ret = DB_ERROR; + } + + /* Restore the fatal lock wait timeout after CHECK TABLE. */ + mutex_enter(&kernel_mutex); + srv_fatal_semaphore_wait_threshold -= 7200; /* 2 hours */ + mutex_exit(&kernel_mutex); + + prebuilt->trx->op_info = ""; + + return(ret); +} +#endif /* !UNIV_HOTBACKUP */ + +/************************************************************************* +Determines if a table is a magic monitor table. */ +UNIV_INTERN +ibool +row_is_magic_monitor_table( +/*=======================*/ + /* out: TRUE if monitor table */ + const char* table_name) /* in: name of the table, in the + form database/table_name */ +{ + const char* name; /* table_name without database/ */ + ulint len; + + name = strchr(table_name, '/'); + ut_a(name != NULL); + name++; + len = strlen(name) + 1; + + if (STR_EQ(name, len, S_innodb_monitor) + || STR_EQ(name, len, S_innodb_lock_monitor) + || STR_EQ(name, len, S_innodb_tablespace_monitor) + || STR_EQ(name, len, S_innodb_table_monitor) + || STR_EQ(name, len, S_innodb_mem_validate)) { + + return(TRUE); + } + + return(FALSE); +} === added file 'storage/xtradb/row/row0purge.c' --- a/storage/xtradb/row/row0purge.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/row/row0purge.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,690 @@ +/***************************************************************************** + +Copyright (c) 1997, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Purge obsolete records + +Created 3/14/1997 Heikki Tuuri +*******************************************************/ + +#include "row0purge.h" + +#ifdef UNIV_NONINL +#include "row0purge.ic" +#endif + +#include "fsp0fsp.h" +#include "mach0data.h" +#include "trx0rseg.h" +#include "trx0trx.h" +#include "trx0roll.h" +#include "trx0undo.h" +#include "trx0purge.h" +#include "trx0rec.h" +#include "que0que.h" +#include "row0row.h" +#include "row0upd.h" +#include "row0vers.h" +#include "row0mysql.h" +#include "log0log.h" + +/************************************************************************ +Creates a purge node to a query graph. */ +UNIV_INTERN +purge_node_t* +row_purge_node_create( +/*==================*/ + /* out, own: purge node */ + que_thr_t* parent, /* in: parent node, i.e., a thr node */ + mem_heap_t* heap) /* in: memory heap where created */ +{ + purge_node_t* node; + + ut_ad(parent && heap); + + node = mem_heap_alloc(heap, sizeof(purge_node_t)); + + node->common.type = QUE_NODE_PURGE; + node->common.parent = parent; + + node->heap = mem_heap_create(256); + + return(node); +} + +/*************************************************************** +Repositions the pcur in the purge node on the clustered index record, +if found. */ +static +ibool +row_purge_reposition_pcur( +/*======================*/ + /* out: TRUE if the record was found */ + ulint mode, /* in: latching mode */ + purge_node_t* node, /* in: row purge node */ + mtr_t* mtr) /* in: mtr */ +{ + ibool found; + + if (node->found_clust) { + found = btr_pcur_restore_position(mode, &(node->pcur), mtr); + + return(found); + } + + found = row_search_on_row_ref(&(node->pcur), mode, node->table, + node->ref, mtr); + node->found_clust = found; + + if (found) { + btr_pcur_store_position(&(node->pcur), mtr); + } + + return(found); +} + +/*************************************************************** +Removes a delete marked clustered index record if possible. */ +static +ibool +row_purge_remove_clust_if_poss_low( +/*===============================*/ + /* out: TRUE if success, or if not found, or + if modified after the delete marking */ + purge_node_t* node, /* in: row purge node */ + ulint mode) /* in: BTR_MODIFY_LEAF or BTR_MODIFY_TREE */ +{ + dict_index_t* index; + btr_pcur_t* pcur; + btr_cur_t* btr_cur; + ibool success; + ulint err; + mtr_t mtr; + rec_t* rec; + mem_heap_t* heap = NULL; + ulint offsets_[REC_OFFS_NORMAL_SIZE]; + rec_offs_init(offsets_); + + index = dict_table_get_first_index(node->table); + + pcur = &(node->pcur); + btr_cur = btr_pcur_get_btr_cur(pcur); + + mtr_start(&mtr); + + success = row_purge_reposition_pcur(mode, node, &mtr); + + if (!success) { + /* The record is already removed */ + + btr_pcur_commit_specify_mtr(pcur, &mtr); + + return(TRUE); + } + + rec = btr_pcur_get_rec(pcur); + + if (0 != ut_dulint_cmp(node->roll_ptr, row_get_rec_roll_ptr( + rec, index, rec_get_offsets( + rec, index, offsets_, + ULINT_UNDEFINED, &heap)))) { + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } + /* Someone else has modified the record later: do not remove */ + btr_pcur_commit_specify_mtr(pcur, &mtr); + + return(TRUE); + } + + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } + + if (mode == BTR_MODIFY_LEAF) { + success = btr_cur_optimistic_delete(btr_cur, &mtr); + } else { + ut_ad(mode == BTR_MODIFY_TREE); + btr_cur_pessimistic_delete(&err, FALSE, btr_cur, + RB_NONE, &mtr); + + if (err == DB_SUCCESS) { + success = TRUE; + } else if (err == DB_OUT_OF_FILE_SPACE) { + success = FALSE; + } else { + ut_error; + } + } + + btr_pcur_commit_specify_mtr(pcur, &mtr); + + return(success); +} + +/*************************************************************** +Removes a clustered index record if it has not been modified after the delete +marking. */ +static +void +row_purge_remove_clust_if_poss( +/*===========================*/ + purge_node_t* node) /* in: row purge node */ +{ + ibool success; + ulint n_tries = 0; + + /* fputs("Purge: Removing clustered record\n", stderr); */ + + success = row_purge_remove_clust_if_poss_low(node, BTR_MODIFY_LEAF); + if (success) { + + return; + } +retry: + success = row_purge_remove_clust_if_poss_low(node, BTR_MODIFY_TREE); + /* The delete operation may fail if we have little + file space left: TODO: easiest to crash the database + and restart with more file space */ + + if (!success && n_tries < BTR_CUR_RETRY_DELETE_N_TIMES) { + n_tries++; + + os_thread_sleep(BTR_CUR_RETRY_SLEEP_TIME); + + goto retry; + } + + ut_a(success); +} + +/*************************************************************** +Removes a secondary index entry if possible. */ +static +ibool +row_purge_remove_sec_if_poss_low( +/*=============================*/ + /* out: TRUE if success or if not found */ + purge_node_t* node, /* in: row purge node */ + dict_index_t* index, /* in: index */ + const dtuple_t* entry, /* in: index entry */ + ulint mode) /* in: latch mode BTR_MODIFY_LEAF or + BTR_MODIFY_TREE */ +{ + btr_pcur_t pcur; + btr_cur_t* btr_cur; + ibool success; + ibool old_has = 0; /* remove warning */ + ibool found; + ulint err; + mtr_t mtr; + mtr_t mtr_vers; + + log_free_check(); + mtr_start(&mtr); + + found = row_search_index_entry(index, entry, mode, &pcur, &mtr); + + if (!found) { + /* Not found. This is a legitimate condition. In a + rollback, InnoDB will remove secondary recs that would + be purged anyway. Then the actual purge will not find + the secondary index record. Also, the purge itself is + eager: if it comes to consider a secondary index + record, and notices it does not need to exist in the + index, it will remove it. Then if/when the purge + comes to consider the secondary index record a second + time, it will not exist any more in the index. */ + + /* fputs("PURGE:........sec entry not found\n", stderr); */ + /* dtuple_print(stderr, entry); */ + + btr_pcur_close(&pcur); + mtr_commit(&mtr); + + return(TRUE); + } + + btr_cur = btr_pcur_get_btr_cur(&pcur); + + /* We should remove the index record if no later version of the row, + which cannot be purged yet, requires its existence. If some requires, + we should do nothing. */ + + mtr_start(&mtr_vers); + + success = row_purge_reposition_pcur(BTR_SEARCH_LEAF, node, &mtr_vers); + + if (success) { + old_has = row_vers_old_has_index_entry( + TRUE, btr_pcur_get_rec(&(node->pcur)), + &mtr_vers, index, entry); + } + + btr_pcur_commit_specify_mtr(&(node->pcur), &mtr_vers); + + if (!success || !old_has) { + /* Remove the index record */ + + if (mode == BTR_MODIFY_LEAF) { + success = btr_cur_optimistic_delete(btr_cur, &mtr); + } else { + ut_ad(mode == BTR_MODIFY_TREE); + btr_cur_pessimistic_delete(&err, FALSE, btr_cur, + RB_NONE, &mtr); + success = err == DB_SUCCESS; + ut_a(success || err == DB_OUT_OF_FILE_SPACE); + } + } + + btr_pcur_close(&pcur); + mtr_commit(&mtr); + + return(success); +} + +/*************************************************************** +Removes a secondary index entry if possible. */ +UNIV_INLINE +void +row_purge_remove_sec_if_poss( +/*=========================*/ + purge_node_t* node, /* in: row purge node */ + dict_index_t* index, /* in: index */ + dtuple_t* entry) /* in: index entry */ +{ + ibool success; + ulint n_tries = 0; + + /* fputs("Purge: Removing secondary record\n", stderr); */ + + success = row_purge_remove_sec_if_poss_low(node, index, entry, + BTR_MODIFY_LEAF); + if (success) { + + return; + } +retry: + success = row_purge_remove_sec_if_poss_low(node, index, entry, + BTR_MODIFY_TREE); + /* The delete operation may fail if we have little + file space left: TODO: easiest to crash the database + and restart with more file space */ + + if (!success && n_tries < BTR_CUR_RETRY_DELETE_N_TIMES) { + + n_tries++; + + os_thread_sleep(BTR_CUR_RETRY_SLEEP_TIME); + + goto retry; + } + + ut_a(success); +} + +/*************************************************************** +Purges a delete marking of a record. */ +static +void +row_purge_del_mark( +/*===============*/ + purge_node_t* node) /* in: row purge node */ +{ + mem_heap_t* heap; + dtuple_t* entry; + dict_index_t* index; + + ut_ad(node); + + heap = mem_heap_create(1024); + + while (node->index != NULL) { + index = node->index; + + /* Build the index entry */ + entry = row_build_index_entry(node->row, NULL, index, heap); + ut_a(entry); + row_purge_remove_sec_if_poss(node, index, entry); + + node->index = dict_table_get_next_index(node->index); + } + + mem_heap_free(heap); + + row_purge_remove_clust_if_poss(node); +} + +/*************************************************************** +Purges an update of an existing record. Also purges an update of a delete +marked record if that record contained an externally stored field. */ +static +void +row_purge_upd_exist_or_extern( +/*==========================*/ + purge_node_t* node) /* in: row purge node */ +{ + mem_heap_t* heap; + dtuple_t* entry; + dict_index_t* index; + ibool is_insert; + ulint rseg_id; + ulint page_no; + ulint offset; + ulint i; + mtr_t mtr; + + ut_ad(node); + + if (node->rec_type == TRX_UNDO_UPD_DEL_REC) { + + goto skip_secondaries; + } + + heap = mem_heap_create(1024); + + while (node->index != NULL) { + index = node->index; + + if (row_upd_changes_ord_field_binary(NULL, node->index, + node->update)) { + /* Build the older version of the index entry */ + entry = row_build_index_entry(node->row, NULL, + index, heap); + ut_a(entry); + row_purge_remove_sec_if_poss(node, index, entry); + } + + node->index = dict_table_get_next_index(node->index); + } + + mem_heap_free(heap); + +skip_secondaries: + /* Free possible externally stored fields */ + for (i = 0; i < upd_get_n_fields(node->update); i++) { + + const upd_field_t* ufield + = upd_get_nth_field(node->update, i); + + if (dfield_is_ext(&ufield->new_val)) { + buf_block_t* block; + ulint internal_offset; + byte* data_field; + + /* We use the fact that new_val points to + node->undo_rec and get thus the offset of + dfield data inside the undo record. Then we + can calculate from node->roll_ptr the file + address of the new_val data */ + + internal_offset + = ((const byte*) + dfield_get_data(&ufield->new_val)) + - node->undo_rec; + + ut_a(internal_offset < UNIV_PAGE_SIZE); + + trx_undo_decode_roll_ptr(node->roll_ptr, + &is_insert, &rseg_id, + &page_no, &offset); + mtr_start(&mtr); + + /* We have to acquire an X-latch to the clustered + index tree */ + + index = dict_table_get_first_index(node->table); + + mtr_x_lock(dict_index_get_lock(index), &mtr); + + /* NOTE: we must also acquire an X-latch to the + root page of the tree. We will need it when we + free pages from the tree. If the tree is of height 1, + the tree X-latch does NOT protect the root page, + because it is also a leaf page. Since we will have a + latch on an undo log page, we would break the + latching order if we would only later latch the + root page of such a tree! */ + + btr_root_get(index, &mtr); + + /* We assume in purge of externally stored fields + that the space id of the undo log record is 0! */ + + block = buf_page_get(0, 0, page_no, RW_X_LATCH, &mtr); + buf_block_dbg_add_level(block, SYNC_TRX_UNDO_PAGE); + + data_field = buf_block_get_frame(block) + + offset + internal_offset; + + ut_a(dfield_get_len(&ufield->new_val) + >= BTR_EXTERN_FIELD_REF_SIZE); + btr_free_externally_stored_field( + index, + data_field + dfield_get_len(&ufield->new_val) + - BTR_EXTERN_FIELD_REF_SIZE, + NULL, NULL, NULL, 0, RB_NONE, &mtr); + mtr_commit(&mtr); + } + } +} + +/*************************************************************** +Parses the row reference and other info in a modify undo log record. */ +static +ibool +row_purge_parse_undo_rec( +/*=====================*/ + /* out: TRUE if purge operation required: + NOTE that then the CALLER must unfreeze + data dictionary! */ + purge_node_t* node, /* in: row undo node */ + ibool* updated_extern, + /* out: TRUE if an externally stored field + was updated */ + que_thr_t* thr) /* in: query thread */ +{ + dict_index_t* clust_index; + byte* ptr; + trx_t* trx; + dulint undo_no; + dulint table_id; + dulint trx_id; + dulint roll_ptr; + ulint info_bits; + ulint type; + ulint cmpl_info; + + ut_ad(node && thr); + + trx = thr_get_trx(thr); + + ptr = trx_undo_rec_get_pars(node->undo_rec, &type, &cmpl_info, + updated_extern, &undo_no, &table_id); + node->rec_type = type; + + if (type == TRX_UNDO_UPD_DEL_REC && !(*updated_extern)) { + + return(FALSE); + } + + ptr = trx_undo_update_rec_get_sys_cols(ptr, &trx_id, &roll_ptr, + &info_bits); + node->table = NULL; + + if (type == TRX_UNDO_UPD_EXIST_REC + && cmpl_info & UPD_NODE_NO_ORD_CHANGE && !(*updated_extern)) { + + /* Purge requires no changes to indexes: we may return */ + + return(FALSE); + } + + /* Prevent DROP TABLE etc. from running when we are doing the purge + for this row */ + + row_mysql_freeze_data_dictionary(trx); + + mutex_enter(&(dict_sys->mutex)); + + node->table = dict_table_get_on_id_low(table_id); + + mutex_exit(&(dict_sys->mutex)); + + if (node->table == NULL) { + /* The table has been dropped: no need to do purge */ +err_exit: + row_mysql_unfreeze_data_dictionary(trx); + return(FALSE); + } + + if (node->table->ibd_file_missing) { + /* We skip purge of missing .ibd files */ + + node->table = NULL; + + goto err_exit; + } + + clust_index = dict_table_get_first_index(node->table); + + if (clust_index == NULL) { + /* The table was corrupt in the data dictionary */ + + goto err_exit; + } + + ptr = trx_undo_rec_get_row_ref(ptr, clust_index, &(node->ref), + node->heap); + + ptr = trx_undo_update_rec_get_update(ptr, clust_index, type, trx_id, + roll_ptr, info_bits, trx, + node->heap, &(node->update)); + + /* Read to the partial row the fields that occur in indexes */ + + if (!(cmpl_info & UPD_NODE_NO_ORD_CHANGE)) { + ptr = trx_undo_rec_get_partial_row( + ptr, clust_index, &node->row, + type == TRX_UNDO_UPD_DEL_REC, + node->heap); + } + + return(TRUE); +} + +/*************************************************************** +Fetches an undo log record and does the purge for the recorded operation. +If none left, or the current purge completed, returns the control to the +parent node, which is always a query thread node. */ +static +ulint +row_purge( +/*======*/ + /* out: DB_SUCCESS if operation successfully + completed, else error code */ + purge_node_t* node, /* in: row purge node */ + que_thr_t* thr) /* in: query thread */ +{ + dulint roll_ptr; + ibool purge_needed; + ibool updated_extern; + trx_t* trx; + + ut_ad(node && thr); + + trx = thr_get_trx(thr); + + node->undo_rec = trx_purge_fetch_next_rec(&roll_ptr, + &(node->reservation), + node->heap); + if (!node->undo_rec) { + /* Purge completed for this query thread */ + + thr->run_node = que_node_get_parent(node); + + return(DB_SUCCESS); + } + + node->roll_ptr = roll_ptr; + + if (node->undo_rec == &trx_purge_dummy_rec) { + purge_needed = FALSE; + } else { + purge_needed = row_purge_parse_undo_rec(node, &updated_extern, + thr); + /* If purge_needed == TRUE, we must also remember to unfreeze + data dictionary! */ + } + + if (purge_needed) { + node->found_clust = FALSE; + + node->index = dict_table_get_next_index( + dict_table_get_first_index(node->table)); + + if (node->rec_type == TRX_UNDO_DEL_MARK_REC) { + row_purge_del_mark(node); + + } else if (updated_extern + || node->rec_type == TRX_UNDO_UPD_EXIST_REC) { + + row_purge_upd_exist_or_extern(node); + } + + if (node->found_clust) { + btr_pcur_close(&(node->pcur)); + } + + row_mysql_unfreeze_data_dictionary(trx); + } + + /* Do some cleanup */ + trx_purge_rec_release(node->reservation); + mem_heap_empty(node->heap); + + thr->run_node = node; + + return(DB_SUCCESS); +} + +/*************************************************************** +Does the purge operation for a single undo log record. This is a high-level +function used in an SQL execution graph. */ +UNIV_INTERN +que_thr_t* +row_purge_step( +/*===========*/ + /* out: query thread to run next or NULL */ + que_thr_t* thr) /* in: query thread */ +{ + purge_node_t* node; + ulint err; + + ut_ad(thr); + + node = thr->run_node; + + ut_ad(que_node_get_type(node) == QUE_NODE_PURGE); + + err = row_purge(node, thr); + + ut_ad(err == DB_SUCCESS); + + return(thr); +} === added file 'storage/xtradb/row/row0row.c' --- a/storage/xtradb/row/row0row.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/row/row0row.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,1241 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +General row routines + +Created 4/20/1996 Heikki Tuuri +*******************************************************/ + +#include "row0row.h" + +#ifdef UNIV_NONINL +#include "row0row.ic" +#endif + +#include "data0type.h" +#include "dict0dict.h" +#include "btr0btr.h" +#include "ha_prototypes.h" +#include "mach0data.h" +#include "trx0rseg.h" +#include "trx0trx.h" +#include "trx0roll.h" +#include "trx0undo.h" +#include "trx0purge.h" +#include "trx0rec.h" +#include "que0que.h" +#include "row0ext.h" +#include "row0upd.h" +#include "rem0cmp.h" +#include "read0read.h" +#include "ut0mem.h" + +/************************************************************************* +Gets the offset of trx id field, in bytes relative to the origin of +a clustered index record. */ +UNIV_INTERN +ulint +row_get_trx_id_offset( +/*==================*/ + /* out: offset of DATA_TRX_ID */ + const rec_t* rec __attribute__((unused)), + /* in: record */ + dict_index_t* index, /* in: clustered index */ + const ulint* offsets)/* in: rec_get_offsets(rec, index) */ +{ + ulint pos; + ulint offset; + ulint len; + + ut_ad(dict_index_is_clust(index)); + ut_ad(rec_offs_validate(rec, index, offsets)); + + pos = dict_index_get_sys_col_pos(index, DATA_TRX_ID); + + offset = rec_get_nth_field_offs(offsets, pos, &len); + + ut_ad(len == DATA_TRX_ID_LEN); + + return(offset); +} + +/********************************************************************* +When an insert or purge to a table is performed, this function builds +the entry to be inserted into or purged from an index on the table. */ +UNIV_INTERN +dtuple_t* +row_build_index_entry( +/*==================*/ + /* out: index entry which should be + inserted or purged, or NULL if the + externally stored columns in the + clustered index record are unavailable + and ext != NULL */ + const dtuple_t* row, /* in: row which should be + inserted or purged */ + row_ext_t* ext, /* in: externally stored column prefixes, + or NULL */ + dict_index_t* index, /* in: index on the table */ + mem_heap_t* heap) /* in: memory heap from which the memory for + the index entry is allocated */ +{ + dtuple_t* entry; + ulint entry_len; + ulint i; + + ut_ad(row && index && heap); + ut_ad(dtuple_check_typed(row)); + + entry_len = dict_index_get_n_fields(index); + entry = dtuple_create(heap, entry_len); + + if (UNIV_UNLIKELY(index->type & DICT_UNIVERSAL)) { + dtuple_set_n_fields_cmp(entry, entry_len); + /* There may only be externally stored columns + in a clustered index B-tree of a user table. */ + ut_a(!ext); + } else { + dtuple_set_n_fields_cmp( + entry, dict_index_get_n_unique_in_tree(index)); + } + + for (i = 0; i < entry_len; i++) { + const dict_field_t* ind_field + = dict_index_get_nth_field(index, i); + const dict_col_t* col + = ind_field->col; + ulint col_no + = dict_col_get_no(col); + dfield_t* dfield + = dtuple_get_nth_field(entry, i); + const dfield_t* dfield2 + = dtuple_get_nth_field(row, col_no); + ulint len + = dfield_get_len(dfield2); + + dfield_copy(dfield, dfield2); + + if (dfield_is_null(dfield) || ind_field->prefix_len == 0) { + continue; + } + + /* If a column prefix index, take only the prefix. + Prefix-indexed columns may be externally stored. */ + ut_ad(col->ord_part); + + if (UNIV_LIKELY_NULL(ext)) { + /* See if the column is stored externally. */ + const byte* buf = row_ext_lookup(ext, col_no, + &len); + if (UNIV_LIKELY_NULL(buf)) { + if (UNIV_UNLIKELY(buf == field_ref_zero)) { + return(NULL); + } + dfield_set_data(dfield, buf, len); + } + } else if (dfield_is_ext(dfield)) { + ut_a(len >= BTR_EXTERN_FIELD_REF_SIZE); + len -= BTR_EXTERN_FIELD_REF_SIZE; + ut_a(ind_field->prefix_len <= len + || dict_index_is_clust(index)); + } + + len = dtype_get_at_most_n_mbchars( + col->prtype, col->mbminlen, col->mbmaxlen, + ind_field->prefix_len, len, dfield_get_data(dfield)); + dfield_set_len(dfield, len); + } + + ut_ad(dtuple_check_typed(entry)); + + return(entry); +} + +/*********************************************************************** +An inverse function to row_build_index_entry. Builds a row from a +record in a clustered index. */ +UNIV_INTERN +dtuple_t* +row_build( +/*======*/ + /* out, own: row built; + see the NOTE below! */ + ulint type, /* in: ROW_COPY_POINTERS or + ROW_COPY_DATA; the latter + copies also the data fields to + heap while the first only + places pointers to data fields + on the index page, and thus is + more efficient */ + const dict_index_t* index, /* in: clustered index */ + const rec_t* rec, /* in: record in the clustered + index; NOTE: in the case + ROW_COPY_POINTERS the data + fields in the row will point + directly into this record, + therefore, the buffer page of + this record must be at least + s-latched and the latch held + as long as the row dtuple is used! */ + const ulint* offsets,/* in: rec_get_offsets(rec,index) + or NULL, in which case this function + will invoke rec_get_offsets() */ + const dict_table_t* col_table, + /* in: table, to check which + externally stored columns + occur in the ordering columns + of an index, or NULL if + index->table should be + consulted instead */ + row_ext_t** ext, /* out, own: cache of + externally stored column + prefixes, or NULL */ + mem_heap_t* heap) /* in: memory heap from which + the memory needed is allocated */ +{ + dtuple_t* row; + const dict_table_t* table; + ulint n_fields; + ulint n_ext_cols; + ulint* ext_cols = NULL; /* remove warning */ + ulint len; + ulint row_len; + byte* buf; + ulint i; + ulint j; + mem_heap_t* tmp_heap = NULL; + ulint offsets_[REC_OFFS_NORMAL_SIZE]; + rec_offs_init(offsets_); + + ut_ad(index && rec && heap); + ut_ad(dict_index_is_clust(index)); + + if (!offsets) { + offsets = rec_get_offsets(rec, index, offsets_, + ULINT_UNDEFINED, &tmp_heap); + } else { + ut_ad(rec_offs_validate(rec, index, offsets)); + } + + if (type != ROW_COPY_POINTERS) { + /* Take a copy of rec to heap */ + buf = mem_heap_alloc(heap, rec_offs_size(offsets)); + rec = rec_copy(buf, rec, offsets); + /* Avoid a debug assertion in rec_offs_validate(). */ + rec_offs_make_valid(rec, index, (ulint*) offsets); + } + + table = index->table; + row_len = dict_table_get_n_cols(table); + + row = dtuple_create(heap, row_len); + + dict_table_copy_types(row, table); + + dtuple_set_info_bits(row, rec_get_info_bits( + rec, dict_table_is_comp(table))); + + n_fields = rec_offs_n_fields(offsets); + n_ext_cols = rec_offs_n_extern(offsets); + if (n_ext_cols) { + ext_cols = mem_heap_alloc(heap, n_ext_cols * sizeof *ext_cols); + } + + for (i = j = 0; i < n_fields; i++) { + dict_field_t* ind_field + = dict_index_get_nth_field(index, i); + const dict_col_t* col + = dict_field_get_col(ind_field); + ulint col_no + = dict_col_get_no(col); + dfield_t* dfield + = dtuple_get_nth_field(row, col_no); + + if (ind_field->prefix_len == 0) { + + const byte* field = rec_get_nth_field( + rec, offsets, i, &len); + + dfield_set_data(dfield, field, len); + } + + if (rec_offs_nth_extern(offsets, i)) { + dfield_set_ext(dfield); + + if (UNIV_LIKELY_NULL(col_table)) { + ut_a(col_no + < dict_table_get_n_cols(col_table)); + col = dict_table_get_nth_col( + col_table, col_no); + } + + if (col->ord_part) { + /* We will have to fetch prefixes of + externally stored columns that are + referenced by column prefixes. */ + ext_cols[j++] = col_no; + } + } + } + + ut_ad(dtuple_check_typed(row)); + + if (j) { + *ext = row_ext_create(j, ext_cols, row, + dict_table_zip_size(index->table), + heap); + } else { + *ext = NULL; + } + + if (tmp_heap) { + mem_heap_free(tmp_heap); + } + + return(row); +} + +/*********************************************************************** +Converts an index record to a typed data tuple. */ +UNIV_INTERN +dtuple_t* +row_rec_to_index_entry_low( +/*=======================*/ + /* out: index entry built; does not + set info_bits, and the data fields in + the entry will point directly to rec */ + const rec_t* rec, /* in: record in the index */ + const dict_index_t* index, /* in: index */ + const ulint* offsets,/* in: rec_get_offsets(rec, index) */ + ulint* n_ext, /* out: number of externally + stored columns */ + mem_heap_t* heap) /* in: memory heap from which + the memory needed is allocated */ +{ + dtuple_t* entry; + dfield_t* dfield; + ulint i; + const byte* field; + ulint len; + ulint rec_len; + + ut_ad(rec && heap && index); + /* Because this function may be invoked by row0merge.c + on a record whose header is in different format, the check + rec_offs_validate(rec, index, offsets) must be avoided here. */ + ut_ad(n_ext); + *n_ext = 0; + + rec_len = rec_offs_n_fields(offsets); + + entry = dtuple_create(heap, rec_len); + + dtuple_set_n_fields_cmp(entry, + dict_index_get_n_unique_in_tree(index)); + ut_ad(rec_len == dict_index_get_n_fields(index)); + + dict_index_copy_types(entry, index, rec_len); + + for (i = 0; i < rec_len; i++) { + + dfield = dtuple_get_nth_field(entry, i); + field = rec_get_nth_field(rec, offsets, i, &len); + + dfield_set_data(dfield, field, len); + + if (rec_offs_nth_extern(offsets, i)) { + dfield_set_ext(dfield); + (*n_ext)++; + } + } + + ut_ad(dtuple_check_typed(entry)); + + return(entry); +} + +/*********************************************************************** +Converts an index record to a typed data tuple. NOTE that externally +stored (often big) fields are NOT copied to heap. */ +UNIV_INTERN +dtuple_t* +row_rec_to_index_entry( +/*===================*/ + /* out, own: index entry + built; see the NOTE below! */ + ulint type, /* in: ROW_COPY_DATA, or + ROW_COPY_POINTERS: the former + copies also the data fields to + heap as the latter only places + pointers to data fields on the + index page */ + const rec_t* rec, /* in: record in the index; + NOTE: in the case + ROW_COPY_POINTERS the data + fields in the row will point + directly into this record, + therefore, the buffer page of + this record must be at least + s-latched and the latch held + as long as the dtuple is used! */ + const dict_index_t* index, /* in: index */ + ulint* offsets,/* in/out: rec_get_offsets(rec) */ + ulint* n_ext, /* out: number of externally + stored columns */ + mem_heap_t* heap) /* in: memory heap from which + the memory needed is allocated */ +{ + dtuple_t* entry; + byte* buf; + + ut_ad(rec && heap && index); + ut_ad(rec_offs_validate(rec, index, offsets)); + + if (type == ROW_COPY_DATA) { + /* Take a copy of rec to heap */ + buf = mem_heap_alloc(heap, rec_offs_size(offsets)); + rec = rec_copy(buf, rec, offsets); + /* Avoid a debug assertion in rec_offs_validate(). */ + rec_offs_make_valid(rec, index, offsets); + } + + entry = row_rec_to_index_entry_low(rec, index, offsets, n_ext, heap); + + dtuple_set_info_bits(entry, + rec_get_info_bits(rec, rec_offs_comp(offsets))); + + return(entry); +} + +/*********************************************************************** +Builds from a secondary index record a row reference with which we can +search the clustered index record. */ +UNIV_INTERN +dtuple_t* +row_build_row_ref( +/*==============*/ + /* out, own: row reference built; see the + NOTE below! */ + ulint type, /* in: ROW_COPY_DATA, or ROW_COPY_POINTERS: + the former copies also the data fields to + heap, whereas the latter only places pointers + to data fields on the index page */ + dict_index_t* index, /* in: secondary index */ + const rec_t* rec, /* in: record in the index; + NOTE: in the case ROW_COPY_POINTERS + the data fields in the row will point + directly into this record, therefore, + the buffer page of this record must be + at least s-latched and the latch held + as long as the row reference is used! */ + mem_heap_t* heap) /* in: memory heap from which the memory + needed is allocated */ +{ + dict_table_t* table; + dict_index_t* clust_index; + dfield_t* dfield; + dtuple_t* ref; + const byte* field; + ulint len; + ulint ref_len; + ulint pos; + byte* buf; + ulint clust_col_prefix_len; + ulint i; + mem_heap_t* tmp_heap = NULL; + ulint offsets_[REC_OFFS_NORMAL_SIZE]; + ulint* offsets = offsets_; + rec_offs_init(offsets_); + + ut_ad(index && rec && heap); + ut_ad(!dict_index_is_clust(index)); + + offsets = rec_get_offsets(rec, index, offsets, + ULINT_UNDEFINED, &tmp_heap); + /* Secondary indexes must not contain externally stored columns. */ + ut_ad(!rec_offs_any_extern(offsets)); + + if (type == ROW_COPY_DATA) { + /* Take a copy of rec to heap */ + + buf = mem_heap_alloc(heap, rec_offs_size(offsets)); + + rec = rec_copy(buf, rec, offsets); + /* Avoid a debug assertion in rec_offs_validate(). */ + rec_offs_make_valid(rec, index, offsets); + } + + table = index->table; + + clust_index = dict_table_get_first_index(table); + + ref_len = dict_index_get_n_unique(clust_index); + + ref = dtuple_create(heap, ref_len); + + dict_index_copy_types(ref, clust_index, ref_len); + + for (i = 0; i < ref_len; i++) { + dfield = dtuple_get_nth_field(ref, i); + + pos = dict_index_get_nth_field_pos(index, clust_index, i); + + ut_a(pos != ULINT_UNDEFINED); + + field = rec_get_nth_field(rec, offsets, pos, &len); + + dfield_set_data(dfield, field, len); + + /* If the primary key contains a column prefix, then the + secondary index may contain a longer prefix of the same + column, or the full column, and we must adjust the length + accordingly. */ + + clust_col_prefix_len = dict_index_get_nth_field( + clust_index, i)->prefix_len; + + if (clust_col_prefix_len > 0) { + if (len != UNIV_SQL_NULL) { + + const dtype_t* dtype + = dfield_get_type(dfield); + + dfield_set_len(dfield, + dtype_get_at_most_n_mbchars( + dtype->prtype, + dtype->mbminlen, + dtype->mbmaxlen, + clust_col_prefix_len, + len, (char*) field)); + } + } + } + + ut_ad(dtuple_check_typed(ref)); + if (tmp_heap) { + mem_heap_free(tmp_heap); + } + + return(ref); +} + +/*********************************************************************** +Builds from a secondary index record a row reference with which we can +search the clustered index record. */ +UNIV_INTERN +void +row_build_row_ref_in_tuple( +/*=======================*/ + dtuple_t* ref, /* in/out: row reference built; + see the NOTE below! */ + const rec_t* rec, /* in: record in the index; + NOTE: the data fields in ref + will point directly into this + record, therefore, the buffer + page of this record must be at + least s-latched and the latch + held as long as the row + reference is used! */ + const dict_index_t* index, /* in: secondary index */ + ulint* offsets,/* in: rec_get_offsets(rec, index) + or NULL */ + trx_t* trx) /* in: transaction */ +{ + const dict_index_t* clust_index; + dfield_t* dfield; + const byte* field; + ulint len; + ulint ref_len; + ulint pos; + ulint clust_col_prefix_len; + ulint i; + mem_heap_t* heap = NULL; + ulint offsets_[REC_OFFS_NORMAL_SIZE]; + rec_offs_init(offsets_); + + ut_a(ref); + ut_a(index); + ut_a(rec); + ut_ad(!dict_index_is_clust(index)); + + if (UNIV_UNLIKELY(!index->table)) { + fputs("InnoDB: table ", stderr); +notfound: + ut_print_name(stderr, trx, TRUE, index->table_name); + fputs(" for index ", stderr); + ut_print_name(stderr, trx, FALSE, index->name); + fputs(" not found\n", stderr); + ut_error; + } + + clust_index = dict_table_get_first_index(index->table); + + if (UNIV_UNLIKELY(!clust_index)) { + fputs("InnoDB: clust index for table ", stderr); + goto notfound; + } + + if (!offsets) { + offsets = rec_get_offsets(rec, index, offsets_, + ULINT_UNDEFINED, &heap); + } else { + ut_ad(rec_offs_validate(rec, index, offsets)); + } + + /* Secondary indexes must not contain externally stored columns. */ + ut_ad(!rec_offs_any_extern(offsets)); + ref_len = dict_index_get_n_unique(clust_index); + + ut_ad(ref_len == dtuple_get_n_fields(ref)); + + dict_index_copy_types(ref, clust_index, ref_len); + + for (i = 0; i < ref_len; i++) { + dfield = dtuple_get_nth_field(ref, i); + + pos = dict_index_get_nth_field_pos(index, clust_index, i); + + ut_a(pos != ULINT_UNDEFINED); + + field = rec_get_nth_field(rec, offsets, pos, &len); + + dfield_set_data(dfield, field, len); + + /* If the primary key contains a column prefix, then the + secondary index may contain a longer prefix of the same + column, or the full column, and we must adjust the length + accordingly. */ + + clust_col_prefix_len = dict_index_get_nth_field( + clust_index, i)->prefix_len; + + if (clust_col_prefix_len > 0) { + if (len != UNIV_SQL_NULL) { + + const dtype_t* dtype + = dfield_get_type(dfield); + + dfield_set_len(dfield, + dtype_get_at_most_n_mbchars( + dtype->prtype, + dtype->mbminlen, + dtype->mbmaxlen, + clust_col_prefix_len, + len, (char*) field)); + } + } + } + + ut_ad(dtuple_check_typed(ref)); + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } +} + +/*********************************************************************** +From a row build a row reference with which we can search the clustered +index record. */ +UNIV_INTERN +void +row_build_row_ref_from_row( +/*=======================*/ + dtuple_t* ref, /* in/out: row reference built; + see the NOTE below! + ref must have the right number + of fields! */ + const dict_table_t* table, /* in: table */ + const dtuple_t* row) /* in: row + NOTE: the data fields in ref will point + directly into data of this row */ +{ + const dict_index_t* clust_index; + ulint ref_len; + ulint i; + + ut_ad(ref && table && row); + + clust_index = dict_table_get_first_index(table); + + ref_len = dict_index_get_n_unique(clust_index); + + ut_ad(ref_len == dtuple_get_n_fields(ref)); + + for (i = 0; i < ref_len; i++) { + const dict_col_t* col; + const dict_field_t* field; + dfield_t* dfield; + const dfield_t* dfield2; + + dfield = dtuple_get_nth_field(ref, i); + + field = dict_index_get_nth_field(clust_index, i); + + col = dict_field_get_col(field); + + dfield2 = dtuple_get_nth_field(row, dict_col_get_no(col)); + + dfield_copy(dfield, dfield2); + ut_ad(!dfield_is_ext(dfield)); + + if (field->prefix_len > 0 && !dfield_is_null(dfield)) { + + ulint len = dfield_get_len(dfield); + + len = dtype_get_at_most_n_mbchars( + col->prtype, col->mbminlen, col->mbmaxlen, + field->prefix_len, + len, dfield_get_data(dfield)); + + dfield_set_len(dfield, len); + } + } + + ut_ad(dtuple_check_typed(ref)); +} + +/******************************************************************* +Searches the clustered index record for a row, if we have the row reference. */ +UNIV_INTERN +ibool +row_search_on_row_ref( +/*==================*/ + /* out: TRUE if found */ + btr_pcur_t* pcur, /* out: persistent cursor, which must + be closed by the caller */ + ulint mode, /* in: BTR_MODIFY_LEAF, ... */ + const dict_table_t* table, /* in: table */ + const dtuple_t* ref, /* in: row reference */ + mtr_t* mtr) /* in/out: mtr */ +{ + ulint low_match; + rec_t* rec; + dict_index_t* index; + + ut_ad(dtuple_check_typed(ref)); + + index = dict_table_get_first_index(table); + + ut_a(dtuple_get_n_fields(ref) == dict_index_get_n_unique(index)); + + btr_pcur_open(index, ref, PAGE_CUR_LE, mode, pcur, mtr); + + low_match = btr_pcur_get_low_match(pcur); + + rec = btr_pcur_get_rec(pcur); + + if (page_rec_is_infimum(rec)) { + + return(FALSE); + } + + if (low_match != dtuple_get_n_fields(ref)) { + + return(FALSE); + } + + return(TRUE); +} + +/************************************************************************* +Fetches the clustered index record for a secondary index record. The latches +on the secondary index record are preserved. */ +UNIV_INTERN +rec_t* +row_get_clust_rec( +/*==============*/ + /* out: record or NULL, if no record found */ + ulint mode, /* in: BTR_MODIFY_LEAF, ... */ + const rec_t* rec, /* in: record in a secondary index */ + dict_index_t* index, /* in: secondary index */ + dict_index_t** clust_index,/* out: clustered index */ + mtr_t* mtr) /* in: mtr */ +{ + mem_heap_t* heap; + dtuple_t* ref; + dict_table_t* table; + btr_pcur_t pcur; + ibool found; + rec_t* clust_rec; + + ut_ad(!dict_index_is_clust(index)); + + table = index->table; + + heap = mem_heap_create(256); + + ref = row_build_row_ref(ROW_COPY_POINTERS, index, rec, heap); + + found = row_search_on_row_ref(&pcur, mode, table, ref, mtr); + + clust_rec = found ? btr_pcur_get_rec(&pcur) : NULL; + + mem_heap_free(heap); + + btr_pcur_close(&pcur); + + *clust_index = dict_table_get_first_index(table); + + return(clust_rec); +} + +/******************************************************************* +Searches an index record. */ +UNIV_INTERN +ibool +row_search_index_entry( +/*===================*/ + /* out: TRUE if found */ + dict_index_t* index, /* in: index */ + const dtuple_t* entry, /* in: index entry */ + ulint mode, /* in: BTR_MODIFY_LEAF, ... */ + btr_pcur_t* pcur, /* in/out: persistent cursor, which must + be closed by the caller */ + mtr_t* mtr) /* in: mtr */ +{ + ulint n_fields; + ulint low_match; + rec_t* rec; + + ut_ad(dtuple_check_typed(entry)); + + btr_pcur_open(index, entry, PAGE_CUR_LE, mode, pcur, mtr); + low_match = btr_pcur_get_low_match(pcur); + + rec = btr_pcur_get_rec(pcur); + + n_fields = dtuple_get_n_fields(entry); + + return(!page_rec_is_infimum(rec) && low_match == n_fields); +} + +#ifndef UNIV_HOTBACKUP + +#include <my_sys.h> + +/*********************************************************************** +Formats the raw data in "data" (in InnoDB on-disk format) that is of +type DATA_INT using "prtype" and writes the result to "buf". +If the data is in unknown format, then nothing is written to "buf", +0 is returned and "format_in_hex" is set to TRUE, otherwise +"format_in_hex" is left untouched. +Not more than "buf_size" bytes are written to "buf". +The result is always '\0'-terminated (provided buf_size > 0) and the +number of bytes that were written to "buf" is returned (including the +terminating '\0'). */ +static +ulint +row_raw_format_int( +/*===============*/ + /* out: number of bytes + that were written */ + const char* data, /* in: raw data */ + ulint data_len, /* in: raw data length + in bytes */ + ulint prtype, /* in: precise type */ + char* buf, /* out: output buffer */ + ulint buf_size, /* in: output buffer size + in bytes */ + ibool* format_in_hex) /* out: should the data be + formated in hex */ +{ + ulint ret; + + if (data_len <= sizeof(ullint)) { + + ullint value; + ibool unsigned_type = prtype & DATA_UNSIGNED; + + value = mach_read_int_type((const byte*) data, + data_len, unsigned_type); + + if (unsigned_type) { + + ret = ut_snprintf(buf, buf_size, "%llu", + value) + 1; + } else { + + ret = ut_snprintf(buf, buf_size, "%lld", + (long long) value) + 1; + } + + } else { + + *format_in_hex = TRUE; + ret = 0; + } + + return(ut_min(ret, buf_size)); +} + +/*********************************************************************** +Formats the raw data in "data" (in InnoDB on-disk format) that is of +type DATA_(CHAR|VARCHAR|MYSQL|VARMYSQL) using "prtype" and writes the +result to "buf". +If the data is in binary format, then nothing is written to "buf", +0 is returned and "format_in_hex" is set to TRUE, otherwise +"format_in_hex" is left untouched. +Not more than "buf_size" bytes are written to "buf". +The result is always '\0'-terminated (provided buf_size > 0) and the +number of bytes that were written to "buf" is returned (including the +terminating '\0'). */ +static +ulint +row_raw_format_str( +/*===============*/ + /* out: number of bytes + that were written */ + const char* data, /* in: raw data */ + ulint data_len, /* in: raw data length + in bytes */ + ulint prtype, /* in: precise type */ + char* buf, /* out: output buffer */ + ulint buf_size, /* in: output buffer size + in bytes */ + ibool* format_in_hex) /* out: should the data be + formated in hex */ +{ + ulint charset_coll; + + if (buf_size == 0) { + + return(0); + } + + /* we assume system_charset_info is UTF-8 */ + + charset_coll = dtype_get_charset_coll(prtype); + + if (UNIV_LIKELY(dtype_is_utf8(prtype))) { + + return(ut_str_sql_format(data, data_len, buf, buf_size)); + } + /* else */ + + if (charset_coll == DATA_MYSQL_BINARY_CHARSET_COLL) { + + *format_in_hex = TRUE; + return(0); + } + /* else */ + + return(innobase_raw_format(data, data_len, charset_coll, + buf, buf_size)); +} + +/*********************************************************************** +Formats the raw data in "data" (in InnoDB on-disk format) using +"dict_field" and writes the result to "buf". +Not more than "buf_size" bytes are written to "buf". +The result is always '\0'-terminated (provided buf_size > 0) and the +number of bytes that were written to "buf" is returned (including the +terminating '\0'). */ +UNIV_INTERN +ulint +row_raw_format( +/*===========*/ + /* out: number of bytes + that were written */ + const char* data, /* in: raw data */ + ulint data_len, /* in: raw data length + in bytes */ + const dict_field_t* dict_field, /* in: index field */ + char* buf, /* out: output buffer */ + ulint buf_size) /* in: output buffer size + in bytes */ +{ + ulint mtype; + ulint prtype; + ulint ret; + ibool format_in_hex; + + if (buf_size == 0) { + + return(0); + } + + if (data_len == UNIV_SQL_NULL) { + + ret = ut_snprintf((char*) buf, buf_size, "NULL") + 1; + + return(ut_min(ret, buf_size)); + } + + mtype = dict_field->col->mtype; + prtype = dict_field->col->prtype; + + format_in_hex = FALSE; + + switch (mtype) { + case DATA_INT: + + ret = row_raw_format_int(data, data_len, prtype, + buf, buf_size, &format_in_hex); + break; + case DATA_CHAR: + case DATA_VARCHAR: + case DATA_MYSQL: + case DATA_VARMYSQL: + + ret = row_raw_format_str(data, data_len, prtype, + buf, buf_size, &format_in_hex); + break; + /* XXX support more data types */ + default: + + format_in_hex = TRUE; + } + + if (format_in_hex) { + + if (UNIV_LIKELY(buf_size > 2)) { + + memcpy(buf, "0x", 2); + buf += 2; + buf_size -= 2; + ret = 2 + ut_raw_to_hex(data, data_len, + buf, buf_size); + } else { + + buf[0] = '\0'; + ret = 1; + } + } + + return(ret); +} + +#endif /* !UNIV_HOTBACKUP */ + +#ifdef UNIV_COMPILE_TEST_FUNCS + +#include "ut0dbg.h" + +void +test_row_raw_format_int() +{ + ulint ret; + char buf[128]; + ibool format_in_hex; + +#define CALL_AND_TEST(data, data_len, prtype, buf, buf_size,\ + ret_expected, buf_expected, format_in_hex_expected)\ + do {\ + ibool ok = TRUE;\ + ulint i;\ + memset(buf, 'x', 10);\ + buf[10] = '\0';\ + format_in_hex = FALSE;\ + fprintf(stderr, "TESTING \"\\x");\ + for (i = 0; i < data_len; i++) {\ + fprintf(stderr, "%02hhX", data[i]);\ + }\ + fprintf(stderr, "\", %lu, %lu, %lu\n",\ + (ulint) data_len, (ulint) prtype,\ + (ulint) buf_size);\ + ret = row_raw_format_int(data, data_len, prtype,\ + buf, buf_size, &format_in_hex);\ + if (ret != ret_expected) {\ + fprintf(stderr, "expected ret %lu, got %lu\n",\ + (ulint) ret_expected, ret);\ + ok = FALSE;\ + }\ + if (strcmp((char*) buf, buf_expected) != 0) {\ + fprintf(stderr, "expected buf \"%s\", got \"%s\"\n",\ + buf_expected, buf);\ + ok = FALSE;\ + }\ + if (format_in_hex != format_in_hex_expected) {\ + fprintf(stderr, "expected format_in_hex %d, got %d\n",\ + (int) format_in_hex_expected,\ + (int) format_in_hex);\ + ok = FALSE;\ + }\ + if (ok) {\ + fprintf(stderr, "OK: %lu, \"%s\" %d\n\n",\ + (ulint) ret, buf, (int) format_in_hex);\ + } else {\ + return;\ + }\ + } while (0) + +#if 1 + /* min values for signed 1-8 byte integers */ + + CALL_AND_TEST("\x00", 1, 0, + buf, sizeof(buf), 5, "-128", 0); + + CALL_AND_TEST("\x00\x00", 2, 0, + buf, sizeof(buf), 7, "-32768", 0); + + CALL_AND_TEST("\x00\x00\x00", 3, 0, + buf, sizeof(buf), 9, "-8388608", 0); + + CALL_AND_TEST("\x00\x00\x00\x00", 4, 0, + buf, sizeof(buf), 12, "-2147483648", 0); + + CALL_AND_TEST("\x00\x00\x00\x00\x00", 5, 0, + buf, sizeof(buf), 14, "-549755813888", 0); + + CALL_AND_TEST("\x00\x00\x00\x00\x00\x00", 6, 0, + buf, sizeof(buf), 17, "-140737488355328", 0); + + CALL_AND_TEST("\x00\x00\x00\x00\x00\x00\x00", 7, 0, + buf, sizeof(buf), 19, "-36028797018963968", 0); + + CALL_AND_TEST("\x00\x00\x00\x00\x00\x00\x00\x00", 8, 0, + buf, sizeof(buf), 21, "-9223372036854775808", 0); + + /* min values for unsigned 1-8 byte integers */ + + CALL_AND_TEST("\x00", 1, DATA_UNSIGNED, + buf, sizeof(buf), 2, "0", 0); + + CALL_AND_TEST("\x00\x00", 2, DATA_UNSIGNED, + buf, sizeof(buf), 2, "0", 0); + + CALL_AND_TEST("\x00\x00\x00", 3, DATA_UNSIGNED, + buf, sizeof(buf), 2, "0", 0); + + CALL_AND_TEST("\x00\x00\x00\x00", 4, DATA_UNSIGNED, + buf, sizeof(buf), 2, "0", 0); + + CALL_AND_TEST("\x00\x00\x00\x00\x00", 5, DATA_UNSIGNED, + buf, sizeof(buf), 2, "0", 0); + + CALL_AND_TEST("\x00\x00\x00\x00\x00\x00", 6, DATA_UNSIGNED, + buf, sizeof(buf), 2, "0", 0); + + CALL_AND_TEST("\x00\x00\x00\x00\x00\x00\x00", 7, DATA_UNSIGNED, + buf, sizeof(buf), 2, "0", 0); + + CALL_AND_TEST("\x00\x00\x00\x00\x00\x00\x00\x00", 8, DATA_UNSIGNED, + buf, sizeof(buf), 2, "0", 0); + + /* max values for signed 1-8 byte integers */ + + CALL_AND_TEST("\xFF", 1, 0, + buf, sizeof(buf), 4, "127", 0); + + CALL_AND_TEST("\xFF\xFF", 2, 0, + buf, sizeof(buf), 6, "32767", 0); + + CALL_AND_TEST("\xFF\xFF\xFF", 3, 0, + buf, sizeof(buf), 8, "8388607", 0); + + CALL_AND_TEST("\xFF\xFF\xFF\xFF", 4, 0, + buf, sizeof(buf), 11, "2147483647", 0); + + CALL_AND_TEST("\xFF\xFF\xFF\xFF\xFF", 5, 0, + buf, sizeof(buf), 13, "549755813887", 0); + + CALL_AND_TEST("\xFF\xFF\xFF\xFF\xFF\xFF", 6, 0, + buf, sizeof(buf), 16, "140737488355327", 0); + + CALL_AND_TEST("\xFF\xFF\xFF\xFF\xFF\xFF\xFF", 7, 0, + buf, sizeof(buf), 18, "36028797018963967", 0); + + CALL_AND_TEST("\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF", 8, 0, + buf, sizeof(buf), 20, "9223372036854775807", 0); + + /* max values for unsigned 1-8 byte integers */ + + CALL_AND_TEST("\xFF", 1, DATA_UNSIGNED, + buf, sizeof(buf), 4, "255", 0); + + CALL_AND_TEST("\xFF\xFF", 2, DATA_UNSIGNED, + buf, sizeof(buf), 6, "65535", 0); + + CALL_AND_TEST("\xFF\xFF\xFF", 3, DATA_UNSIGNED, + buf, sizeof(buf), 9, "16777215", 0); + + CALL_AND_TEST("\xFF\xFF\xFF\xFF", 4, DATA_UNSIGNED, + buf, sizeof(buf), 11, "4294967295", 0); + + CALL_AND_TEST("\xFF\xFF\xFF\xFF\xFF", 5, DATA_UNSIGNED, + buf, sizeof(buf), 14, "1099511627775", 0); + + CALL_AND_TEST("\xFF\xFF\xFF\xFF\xFF\xFF", 6, DATA_UNSIGNED, + buf, sizeof(buf), 16, "281474976710655", 0); + + CALL_AND_TEST("\xFF\xFF\xFF\xFF\xFF\xFF\xFF", 7, DATA_UNSIGNED, + buf, sizeof(buf), 18, "72057594037927935", 0); + + CALL_AND_TEST("\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF", 8, DATA_UNSIGNED, + buf, sizeof(buf), 21, "18446744073709551615", 0); + + /* some random values */ + + CALL_AND_TEST("\x52", 1, 0, + buf, sizeof(buf), 4, "-46", 0); + + CALL_AND_TEST("\x0E", 1, DATA_UNSIGNED, + buf, sizeof(buf), 3, "14", 0); + + CALL_AND_TEST("\x62\xCE", 2, 0, + buf, sizeof(buf), 6, "-7474", 0); + + CALL_AND_TEST("\x29\xD6", 2, DATA_UNSIGNED, + buf, sizeof(buf), 6, "10710", 0); + + CALL_AND_TEST("\x7F\xFF\x90", 3, 0, + buf, sizeof(buf), 5, "-112", 0); + + CALL_AND_TEST("\x00\xA1\x16", 3, DATA_UNSIGNED, + buf, sizeof(buf), 6, "41238", 0); + + CALL_AND_TEST("\x7F\xFF\xFF\xF7", 4, 0, + buf, sizeof(buf), 3, "-9", 0); + + CALL_AND_TEST("\x00\x00\x00\x5C", 4, DATA_UNSIGNED, + buf, sizeof(buf), 3, "92", 0); + + CALL_AND_TEST("\x7F\xFF\xFF\xFF\xFF\xFF\xDC\x63", 8, 0, + buf, sizeof(buf), 6, "-9117", 0); + + CALL_AND_TEST("\x00\x00\x00\x00\x00\x01\x64\x62", 8, DATA_UNSIGNED, + buf, sizeof(buf), 6, "91234", 0); +#endif + + /* speed test */ + + speedo_t speedo; + ulint i; + + speedo_reset(&speedo); + + for (i = 0; i < 1000000; i++) { + row_raw_format_int("\x23", 1, + 0, buf, sizeof(buf), + &format_in_hex); + row_raw_format_int("\x23", 1, + DATA_UNSIGNED, buf, sizeof(buf), + &format_in_hex); + + row_raw_format_int("\x00\x00\x00\x00\x00\x01\x64\x62", 8, + 0, buf, sizeof(buf), + &format_in_hex); + row_raw_format_int("\x00\x00\x00\x00\x00\x01\x64\x62", 8, + DATA_UNSIGNED, buf, sizeof(buf), + &format_in_hex); + } + + speedo_show(&speedo); +} + +#endif /* UNIV_COMPILE_TEST_FUNCS */ === added file 'storage/xtradb/row/row0sel.c' --- a/storage/xtradb/row/row0sel.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/row/row0sel.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,4736 @@ +/***************************************************************************** + +Copyright (c) 1997, 2009, Innobase Oy. All Rights Reserved. +Copyright (c) 2008, Google Inc. + +Portions of this file contain modifications contributed and copyrighted by +Google, Inc. Those modifications are gratefully acknowledged and are described +briefly in the InnoDB documentation. The contributions by Google are +incorporated with their permission, and subject to the conditions contained in +the file COPYING.Google. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/******************************************************* +Select + +Created 12/19/1997 Heikki Tuuri +*******************************************************/ + +#include "row0sel.h" + +#ifdef UNIV_NONINL +#include "row0sel.ic" +#endif + +#include "dict0dict.h" +#include "dict0boot.h" +#include "trx0undo.h" +#include "trx0trx.h" +#include "btr0btr.h" +#include "btr0cur.h" +#include "btr0sea.h" +#include "mach0data.h" +#include "que0que.h" +#include "row0upd.h" +#include "row0row.h" +#include "row0vers.h" +#include "rem0cmp.h" +#include "lock0lock.h" +#include "eval0eval.h" +#include "pars0sym.h" +#include "pars0pars.h" +#include "row0mysql.h" +#include "read0read.h" +#include "buf0lru.h" +#include "ha_prototypes.h" + +/* Maximum number of rows to prefetch; MySQL interface has another parameter */ +#define SEL_MAX_N_PREFETCH 16 + +/* Number of rows fetched, after which to start prefetching; MySQL interface +has another parameter */ +#define SEL_PREFETCH_LIMIT 1 + +/* When a select has accessed about this many pages, it returns control back +to que_run_threads: this is to allow canceling runaway queries */ + +#define SEL_COST_LIMIT 100 + +/* Flags for search shortcut */ +#define SEL_FOUND 0 +#define SEL_EXHAUSTED 1 +#define SEL_RETRY 2 + +/************************************************************************ +Returns TRUE if the user-defined column in a secondary index record +is alphabetically the same as the corresponding BLOB column in the clustered +index record. +NOTE: the comparison is NOT done as a binary comparison, but character +fields are compared with collation! */ +static +ibool +row_sel_sec_rec_is_for_blob( +/*========================*/ + /* out: TRUE if the columns + are equal */ + ulint mtype, /* in: main type */ + ulint prtype, /* in: precise type */ + ulint mbminlen, /* in: minimum length of a + multi-byte character */ + ulint mbmaxlen, /* in: maximum length of a + multi-byte character */ + const byte* clust_field, /* in: the locally stored part of + the clustered index column, including + the BLOB pointer; the clustered + index record must be covered by + a lock or a page latch to protect it + against deletion (rollback or purge) */ + ulint clust_len, /* in: length of clust_field */ + const byte* sec_field, /* in: column in secondary index */ + ulint sec_len, /* in: length of sec_field */ + ulint zip_size) /* in: compressed page size, or 0 */ +{ + ulint len; + byte buf[DICT_MAX_INDEX_COL_LEN]; + + len = btr_copy_externally_stored_field_prefix(buf, sizeof buf, + zip_size, + clust_field, clust_len); + + if (UNIV_UNLIKELY(len == 0)) { + /* The BLOB was being deleted as the server crashed. + There should not be any secondary index records + referring to this clustered index record, because + btr_free_externally_stored_field() is called after all + secondary index entries of the row have been purged. */ + return(FALSE); + } + + len = dtype_get_at_most_n_mbchars(prtype, mbminlen, mbmaxlen, + sec_len, len, (const char*) buf); + + return(!cmp_data_data(mtype, prtype, buf, len, sec_field, sec_len)); +} + +/************************************************************************ +Returns TRUE if the user-defined column values in a secondary index record +are alphabetically the same as the corresponding columns in the clustered +index record. +NOTE: the comparison is NOT done as a binary comparison, but character +fields are compared with collation! */ +static +ibool +row_sel_sec_rec_is_for_clust_rec( +/*=============================*/ + /* out: TRUE if the secondary + record is equal to the corresponding + fields in the clustered record, + when compared with collation */ + const rec_t* sec_rec, /* in: secondary index record */ + dict_index_t* sec_index, /* in: secondary index */ + const rec_t* clust_rec, /* in: clustered index record; + must be protected by a lock or + a page latch against deletion + in rollback or purge */ + dict_index_t* clust_index) /* in: clustered index */ +{ + const byte* sec_field; + ulint sec_len; + const byte* clust_field; + ulint n; + ulint i; + mem_heap_t* heap = NULL; + ulint clust_offsets_[REC_OFFS_NORMAL_SIZE]; + ulint sec_offsets_[REC_OFFS_SMALL_SIZE]; + ulint* clust_offs = clust_offsets_; + ulint* sec_offs = sec_offsets_; + ibool is_equal = TRUE; + + rec_offs_init(clust_offsets_); + rec_offs_init(sec_offsets_); + + if (rec_get_deleted_flag(clust_rec, + dict_table_is_comp(clust_index->table))) { + + /* The clustered index record is delete-marked; + it is not visible in the read view. Besides, + if there are any externally stored columns, + some of them may have already been purged. */ + return(FALSE); + } + + clust_offs = rec_get_offsets(clust_rec, clust_index, clust_offs, + ULINT_UNDEFINED, &heap); + sec_offs = rec_get_offsets(sec_rec, sec_index, sec_offs, + ULINT_UNDEFINED, &heap); + + n = dict_index_get_n_ordering_defined_by_user(sec_index); + + for (i = 0; i < n; i++) { + const dict_field_t* ifield; + const dict_col_t* col; + ulint clust_pos; + ulint clust_len; + ulint len; + + ifield = dict_index_get_nth_field(sec_index, i); + col = dict_field_get_col(ifield); + clust_pos = dict_col_get_clust_pos(col, clust_index); + + clust_field = rec_get_nth_field( + clust_rec, clust_offs, clust_pos, &clust_len); + sec_field = rec_get_nth_field(sec_rec, sec_offs, i, &sec_len); + + len = clust_len; + + if (ifield->prefix_len > 0 && len != UNIV_SQL_NULL) { + + if (rec_offs_nth_extern(clust_offs, clust_pos)) { + len -= BTR_EXTERN_FIELD_REF_SIZE; + } + + len = dtype_get_at_most_n_mbchars( + col->prtype, col->mbminlen, col->mbmaxlen, + ifield->prefix_len, len, (char*) clust_field); + + if (rec_offs_nth_extern(clust_offs, clust_pos) + && len < sec_len) { + if (!row_sel_sec_rec_is_for_blob( + col->mtype, col->prtype, + col->mbminlen, col->mbmaxlen, + clust_field, clust_len, + sec_field, sec_len, + dict_table_zip_size( + clust_index->table))) { + goto inequal; + } + + continue; + } + } + + if (0 != cmp_data_data(col->mtype, col->prtype, + clust_field, len, + sec_field, sec_len)) { +inequal: + is_equal = FALSE; + goto func_exit; + } + } + +func_exit: + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } + return(is_equal); +} + +/************************************************************************* +Creates a select node struct. */ +UNIV_INTERN +sel_node_t* +sel_node_create( +/*============*/ + /* out, own: select node struct */ + mem_heap_t* heap) /* in: memory heap where created */ +{ + sel_node_t* node; + + node = mem_heap_alloc(heap, sizeof(sel_node_t)); + node->common.type = QUE_NODE_SELECT; + node->state = SEL_NODE_OPEN; + + node->plans = NULL; + + return(node); +} + +/************************************************************************* +Frees the memory private to a select node when a query graph is freed, +does not free the heap where the node was originally created. */ +UNIV_INTERN +void +sel_node_free_private( +/*==================*/ + sel_node_t* node) /* in: select node struct */ +{ + ulint i; + plan_t* plan; + + if (node->plans != NULL) { + for (i = 0; i < node->n_tables; i++) { + plan = sel_node_get_nth_plan(node, i); + + btr_pcur_close(&(plan->pcur)); + btr_pcur_close(&(plan->clust_pcur)); + + if (plan->old_vers_heap) { + mem_heap_free(plan->old_vers_heap); + } + } + } +} + +/************************************************************************* +Evaluates the values in a select list. If there are aggregate functions, +their argument value is added to the aggregate total. */ +UNIV_INLINE +void +sel_eval_select_list( +/*=================*/ + sel_node_t* node) /* in: select node */ +{ + que_node_t* exp; + + exp = node->select_list; + + while (exp) { + eval_exp(exp); + + exp = que_node_get_next(exp); + } +} + +/************************************************************************* +Assigns the values in the select list to the possible into-variables in +SELECT ... INTO ... */ +UNIV_INLINE +void +sel_assign_into_var_values( +/*=======================*/ + sym_node_t* var, /* in: first variable in a list of variables */ + sel_node_t* node) /* in: select node */ +{ + que_node_t* exp; + + if (var == NULL) { + + return; + } + + exp = node->select_list; + + while (var) { + ut_ad(exp); + + eval_node_copy_val(var->alias, exp); + + exp = que_node_get_next(exp); + var = que_node_get_next(var); + } +} + +/************************************************************************* +Resets the aggregate value totals in the select list of an aggregate type +query. */ +UNIV_INLINE +void +sel_reset_aggregate_vals( +/*=====================*/ + sel_node_t* node) /* in: select node */ +{ + func_node_t* func_node; + + ut_ad(node->is_aggregate); + + func_node = node->select_list; + + while (func_node) { + eval_node_set_int_val(func_node, 0); + + func_node = que_node_get_next(func_node); + } + + node->aggregate_already_fetched = FALSE; +} + +/************************************************************************* +Copies the input variable values when an explicit cursor is opened. */ +UNIV_INLINE +void +row_sel_copy_input_variable_vals( +/*=============================*/ + sel_node_t* node) /* in: select node */ +{ + sym_node_t* var; + + var = UT_LIST_GET_FIRST(node->copy_variables); + + while (var) { + eval_node_copy_val(var, var->alias); + + var->indirection = NULL; + + var = UT_LIST_GET_NEXT(col_var_list, var); + } +} + +/************************************************************************* +Fetches the column values from a record. */ +static +void +row_sel_fetch_columns( +/*==================*/ + dict_index_t* index, /* in: record index */ + const rec_t* rec, /* in: record in a clustered or non-clustered + index; must be protected by a page latch */ + const ulint* offsets,/* in: rec_get_offsets(rec, index) */ + sym_node_t* column) /* in: first column in a column list, or + NULL */ +{ + dfield_t* val; + ulint index_type; + ulint field_no; + const byte* data; + ulint len; + + ut_ad(rec_offs_validate(rec, index, offsets)); + + if (dict_index_is_clust(index)) { + index_type = SYM_CLUST_FIELD_NO; + } else { + index_type = SYM_SEC_FIELD_NO; + } + + while (column) { + mem_heap_t* heap = NULL; + ibool needs_copy; + + field_no = column->field_nos[index_type]; + + if (field_no != ULINT_UNDEFINED) { + + if (UNIV_UNLIKELY(rec_offs_nth_extern(offsets, + field_no))) { + + /* Copy an externally stored field to the + temporary heap */ + + heap = mem_heap_create(1); + + data = btr_rec_copy_externally_stored_field( + rec, offsets, + dict_table_zip_size(index->table), + field_no, &len, heap); + + ut_a(len != UNIV_SQL_NULL); + + needs_copy = TRUE; + } else { + data = rec_get_nth_field(rec, offsets, + field_no, &len); + + if (len == UNIV_SQL_NULL) { + len = UNIV_SQL_NULL; + } + + needs_copy = column->copy_val; + } + + if (needs_copy) { + eval_node_copy_and_alloc_val(column, data, + len); + } else { + val = que_node_get_val(column); + dfield_set_data(val, data, len); + } + + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } + } + + column = UT_LIST_GET_NEXT(col_var_list, column); + } +} + +/************************************************************************* +Allocates a prefetch buffer for a column when prefetch is first time done. */ +static +void +sel_col_prefetch_buf_alloc( +/*=======================*/ + sym_node_t* column) /* in: symbol table node for a column */ +{ + sel_buf_t* sel_buf; + ulint i; + + ut_ad(que_node_get_type(column) == QUE_NODE_SYMBOL); + + column->prefetch_buf = mem_alloc(SEL_MAX_N_PREFETCH + * sizeof(sel_buf_t)); + for (i = 0; i < SEL_MAX_N_PREFETCH; i++) { + sel_buf = column->prefetch_buf + i; + + sel_buf->data = NULL; + + sel_buf->val_buf_size = 0; + } +} + +/************************************************************************* +Frees a prefetch buffer for a column, including the dynamically allocated +memory for data stored there. */ +UNIV_INTERN +void +sel_col_prefetch_buf_free( +/*======================*/ + sel_buf_t* prefetch_buf) /* in, own: prefetch buffer */ +{ + sel_buf_t* sel_buf; + ulint i; + + for (i = 0; i < SEL_MAX_N_PREFETCH; i++) { + sel_buf = prefetch_buf + i; + + if (sel_buf->val_buf_size > 0) { + + mem_free(sel_buf->data); + } + } +} + +/************************************************************************* +Pops the column values for a prefetched, cached row from the column prefetch +buffers and places them to the val fields in the column nodes. */ +static +void +sel_pop_prefetched_row( +/*===================*/ + plan_t* plan) /* in: plan node for a table */ +{ + sym_node_t* column; + sel_buf_t* sel_buf; + dfield_t* val; + byte* data; + ulint len; + ulint val_buf_size; + + ut_ad(plan->n_rows_prefetched > 0); + + column = UT_LIST_GET_FIRST(plan->columns); + + while (column) { + val = que_node_get_val(column); + + if (!column->copy_val) { + /* We did not really push any value for the + column */ + + ut_ad(!column->prefetch_buf); + ut_ad(que_node_get_val_buf_size(column) == 0); + ut_d(dfield_set_null(val)); + + goto next_col; + } + + ut_ad(column->prefetch_buf); + ut_ad(!dfield_is_ext(val)); + + sel_buf = column->prefetch_buf + plan->first_prefetched; + + data = sel_buf->data; + len = sel_buf->len; + val_buf_size = sel_buf->val_buf_size; + + /* We must keep track of the allocated memory for + column values to be able to free it later: therefore + we swap the values for sel_buf and val */ + + sel_buf->data = dfield_get_data(val); + sel_buf->len = dfield_get_len(val); + sel_buf->val_buf_size = que_node_get_val_buf_size(column); + + dfield_set_data(val, data, len); + que_node_set_val_buf_size(column, val_buf_size); +next_col: + column = UT_LIST_GET_NEXT(col_var_list, column); + } + + plan->n_rows_prefetched--; + + plan->first_prefetched++; +} + +/************************************************************************* +Pushes the column values for a prefetched, cached row to the column prefetch +buffers from the val fields in the column nodes. */ +UNIV_INLINE +void +sel_push_prefetched_row( +/*====================*/ + plan_t* plan) /* in: plan node for a table */ +{ + sym_node_t* column; + sel_buf_t* sel_buf; + dfield_t* val; + byte* data; + ulint len; + ulint pos; + ulint val_buf_size; + + if (plan->n_rows_prefetched == 0) { + pos = 0; + plan->first_prefetched = 0; + } else { + pos = plan->n_rows_prefetched; + + /* We have the convention that pushing new rows starts only + after the prefetch stack has been emptied: */ + + ut_ad(plan->first_prefetched == 0); + } + + plan->n_rows_prefetched++; + + ut_ad(pos < SEL_MAX_N_PREFETCH); + + column = UT_LIST_GET_FIRST(plan->columns); + + while (column) { + if (!column->copy_val) { + /* There is no sense to push pointers to database + page fields when we do not keep latch on the page! */ + + goto next_col; + } + + if (!column->prefetch_buf) { + /* Allocate a new prefetch buffer */ + + sel_col_prefetch_buf_alloc(column); + } + + sel_buf = column->prefetch_buf + pos; + + val = que_node_get_val(column); + + data = dfield_get_data(val); + len = dfield_get_len(val); + val_buf_size = que_node_get_val_buf_size(column); + + /* We must keep track of the allocated memory for + column values to be able to free it later: therefore + we swap the values for sel_buf and val */ + + dfield_set_data(val, sel_buf->data, sel_buf->len); + que_node_set_val_buf_size(column, sel_buf->val_buf_size); + + sel_buf->data = data; + sel_buf->len = len; + sel_buf->val_buf_size = val_buf_size; +next_col: + column = UT_LIST_GET_NEXT(col_var_list, column); + } +} + +/************************************************************************* +Builds a previous version of a clustered index record for a consistent read */ +static +ulint +row_sel_build_prev_vers( +/*====================*/ + /* out: DB_SUCCESS or error code */ + read_view_t* read_view, /* in: read view */ + dict_index_t* index, /* in: plan node for table */ + rec_t* rec, /* in: record in a clustered index */ + ulint** offsets, /* in/out: offsets returned by + rec_get_offsets(rec, plan->index) */ + mem_heap_t** offset_heap, /* in/out: memory heap from which + the offsets are allocated */ + mem_heap_t** old_vers_heap, /* out: old version heap to use */ + rec_t** old_vers, /* out: old version, or NULL if the + record does not exist in the view: + i.e., it was freshly inserted + afterwards */ + mtr_t* mtr) /* in: mtr */ +{ + ulint err; + + if (*old_vers_heap) { + mem_heap_empty(*old_vers_heap); + } else { + *old_vers_heap = mem_heap_create(512); + } + + err = row_vers_build_for_consistent_read( + rec, mtr, index, offsets, read_view, offset_heap, + *old_vers_heap, old_vers); + return(err); +} + +/************************************************************************* +Builds the last committed version of a clustered index record for a +semi-consistent read. */ +static +ulint +row_sel_build_committed_vers_for_mysql( +/*===================================*/ + /* out: DB_SUCCESS or error code */ + dict_index_t* clust_index, /* in: clustered index */ + row_prebuilt_t* prebuilt, /* in: prebuilt struct */ + const rec_t* rec, /* in: record in a clustered index */ + ulint** offsets, /* in/out: offsets returned by + rec_get_offsets(rec, clust_index) */ + mem_heap_t** offset_heap, /* in/out: memory heap from which + the offsets are allocated */ + const rec_t** old_vers, /* out: old version, or NULL if the + record does not exist in the view: + i.e., it was freshly inserted + afterwards */ + mtr_t* mtr) /* in: mtr */ +{ + ulint err; + + if (prebuilt->old_vers_heap) { + mem_heap_empty(prebuilt->old_vers_heap); + } else { + prebuilt->old_vers_heap = mem_heap_create(200); + } + + err = row_vers_build_for_semi_consistent_read( + rec, mtr, clust_index, offsets, offset_heap, + prebuilt->old_vers_heap, old_vers); + return(err); +} + +/************************************************************************* +Tests the conditions which determine when the index segment we are searching +through has been exhausted. */ +UNIV_INLINE +ibool +row_sel_test_end_conds( +/*===================*/ + /* out: TRUE if row passed the tests */ + plan_t* plan) /* in: plan for the table; the column values must + already have been retrieved and the right sides of + comparisons evaluated */ +{ + func_node_t* cond; + + /* All conditions in end_conds are comparisons of a column to an + expression */ + + cond = UT_LIST_GET_FIRST(plan->end_conds); + + while (cond) { + /* Evaluate the left side of the comparison, i.e., get the + column value if there is an indirection */ + + eval_sym(cond->args); + + /* Do the comparison */ + + if (!eval_cmp(cond)) { + + return(FALSE); + } + + cond = UT_LIST_GET_NEXT(cond_list, cond); + } + + return(TRUE); +} + +/************************************************************************* +Tests the other conditions. */ +UNIV_INLINE +ibool +row_sel_test_other_conds( +/*=====================*/ + /* out: TRUE if row passed the tests */ + plan_t* plan) /* in: plan for the table; the column values must + already have been retrieved */ +{ + func_node_t* cond; + + cond = UT_LIST_GET_FIRST(plan->other_conds); + + while (cond) { + eval_exp(cond); + + if (!eval_node_get_ibool_val(cond)) { + + return(FALSE); + } + + cond = UT_LIST_GET_NEXT(cond_list, cond); + } + + return(TRUE); +} + +/************************************************************************* +Retrieves the clustered index record corresponding to a record in a +non-clustered index. Does the necessary locking. */ +static +ulint +row_sel_get_clust_rec( +/*==================*/ + /* out: DB_SUCCESS or error code */ + sel_node_t* node, /* in: select_node */ + plan_t* plan, /* in: plan node for table */ + rec_t* rec, /* in: record in a non-clustered index */ + que_thr_t* thr, /* in: query thread */ + rec_t** out_rec,/* out: clustered record or an old version of + it, NULL if the old version did not exist + in the read view, i.e., it was a fresh + inserted version */ + mtr_t* mtr) /* in: mtr used to get access to the + non-clustered record; the same mtr is used to + access the clustered index */ +{ + dict_index_t* index; + rec_t* clust_rec; + rec_t* old_vers; + ulint err; + mem_heap_t* heap = NULL; + ulint offsets_[REC_OFFS_NORMAL_SIZE]; + ulint* offsets = offsets_; + rec_offs_init(offsets_); + + *out_rec = NULL; + + offsets = rec_get_offsets(rec, + btr_pcur_get_btr_cur(&plan->pcur)->index, + offsets, ULINT_UNDEFINED, &heap); + + row_build_row_ref_fast(plan->clust_ref, plan->clust_map, rec, offsets); + + index = dict_table_get_first_index(plan->table); + + btr_pcur_open_with_no_init(index, plan->clust_ref, PAGE_CUR_LE, + BTR_SEARCH_LEAF, &plan->clust_pcur, + 0, mtr); + + clust_rec = btr_pcur_get_rec(&(plan->clust_pcur)); + + /* Note: only if the search ends up on a non-infimum record is the + low_match value the real match to the search tuple */ + + if (!page_rec_is_user_rec(clust_rec) + || btr_pcur_get_low_match(&(plan->clust_pcur)) + < dict_index_get_n_unique(index)) { + + ut_a(rec_get_deleted_flag(rec, + dict_table_is_comp(plan->table))); + ut_a(node->read_view); + + /* In a rare case it is possible that no clust rec is found + for a delete-marked secondary index record: if in row0umod.c + in row_undo_mod_remove_clust_low() we have already removed + the clust rec, while purge is still cleaning and removing + secondary index records associated with earlier versions of + the clustered index record. In that case we know that the + clustered index record did not exist in the read view of + trx. */ + + goto func_exit; + } + + offsets = rec_get_offsets(clust_rec, index, offsets, + ULINT_UNDEFINED, &heap); + + if (!node->read_view) { + /* Try to place a lock on the index record */ + + /* If innodb_locks_unsafe_for_binlog option is used + or this session is using READ COMMITTED isolation level + we lock only the record, i.e., next-key locking is + not used. */ + ulint lock_type; + trx_t* trx; + + trx = thr_get_trx(thr); + + if (srv_locks_unsafe_for_binlog + || trx->isolation_level == TRX_ISO_READ_COMMITTED) { + lock_type = LOCK_REC_NOT_GAP; + } else { + lock_type = LOCK_ORDINARY; + } + + err = lock_clust_rec_read_check_and_lock( + 0, btr_pcur_get_block(&plan->clust_pcur), + clust_rec, index, offsets, + node->row_lock_mode, lock_type, thr); + + if (err != DB_SUCCESS) { + + goto err_exit; + } + } else { + /* This is a non-locking consistent read: if necessary, fetch + a previous version of the record */ + + old_vers = NULL; + + if (!lock_clust_rec_cons_read_sees(clust_rec, index, offsets, + node->read_view)) { + + err = row_sel_build_prev_vers( + node->read_view, index, clust_rec, + &offsets, &heap, &plan->old_vers_heap, + &old_vers, mtr); + + if (err != DB_SUCCESS) { + + goto err_exit; + } + + clust_rec = old_vers; + + if (clust_rec == NULL) { + goto func_exit; + } + } + + /* If we had to go to an earlier version of row or the + secondary index record is delete marked, then it may be that + the secondary index record corresponding to clust_rec + (or old_vers) is not rec; in that case we must ignore + such row because in our snapshot rec would not have existed. + Remember that from rec we cannot see directly which transaction + id corresponds to it: we have to go to the clustered index + record. A query where we want to fetch all rows where + the secondary index value is in some interval would return + a wrong result if we would not drop rows which we come to + visit through secondary index records that would not really + exist in our snapshot. */ + + if ((old_vers + || rec_get_deleted_flag(rec, dict_table_is_comp( + plan->table))) + && !row_sel_sec_rec_is_for_clust_rec(rec, plan->index, + clust_rec, index)) { + goto func_exit; + } + } + + /* Fetch the columns needed in test conditions. The clustered + index record is protected by a page latch that was acquired + when plan->clust_pcur was positioned. The latch will not be + released until mtr_commit(mtr). */ + + row_sel_fetch_columns(index, clust_rec, offsets, + UT_LIST_GET_FIRST(plan->columns)); + *out_rec = clust_rec; +func_exit: + err = DB_SUCCESS; +err_exit: + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } + return(err); +} + +/************************************************************************* +Sets a lock on a record. */ +UNIV_INLINE +ulint +sel_set_rec_lock( +/*=============*/ + /* out: DB_SUCCESS or error code */ + const buf_block_t* block, /* in: buffer block of rec */ + const rec_t* rec, /* in: record */ + dict_index_t* index, /* in: index */ + const ulint* offsets,/* in: rec_get_offsets(rec, index) */ + ulint mode, /* in: lock mode */ + ulint type, /* in: LOCK_ORDINARY, LOCK_GAP, or + LOC_REC_NOT_GAP */ + que_thr_t* thr) /* in: query thread */ +{ + trx_t* trx; + ulint err; + + trx = thr_get_trx(thr); + + if (UT_LIST_GET_LEN(trx->trx_locks) > 10000) { + if (buf_LRU_buf_pool_running_out()) { + + return(DB_LOCK_TABLE_FULL); + } + } + + if (dict_index_is_clust(index)) { + err = lock_clust_rec_read_check_and_lock( + 0, block, rec, index, offsets, mode, type, thr); + } else { + err = lock_sec_rec_read_check_and_lock( + 0, block, rec, index, offsets, mode, type, thr); + } + + return(err); +} + +/************************************************************************* +Opens a pcur to a table index. */ +static +void +row_sel_open_pcur( +/*==============*/ + plan_t* plan, /* in: table plan */ + ibool search_latch_locked, + /* in: TRUE if the thread currently + has the search latch locked in + s-mode */ + mtr_t* mtr) /* in: mtr */ +{ + dict_index_t* index; + func_node_t* cond; + que_node_t* exp; + ulint n_fields; + ulint has_search_latch = 0; /* RW_S_LATCH or 0 */ + ulint i; + + if (search_latch_locked) { + has_search_latch = RW_S_LATCH; + } + + index = plan->index; + + /* Calculate the value of the search tuple: the exact match columns + get their expressions evaluated when we evaluate the right sides of + end_conds */ + + cond = UT_LIST_GET_FIRST(plan->end_conds); + + while (cond) { + eval_exp(que_node_get_next(cond->args)); + + cond = UT_LIST_GET_NEXT(cond_list, cond); + } + + if (plan->tuple) { + n_fields = dtuple_get_n_fields(plan->tuple); + + if (plan->n_exact_match < n_fields) { + /* There is a non-exact match field which must be + evaluated separately */ + + eval_exp(plan->tuple_exps[n_fields - 1]); + } + + for (i = 0; i < n_fields; i++) { + exp = plan->tuple_exps[i]; + + dfield_copy_data(dtuple_get_nth_field(plan->tuple, i), + que_node_get_val(exp)); + } + + /* Open pcur to the index */ + + btr_pcur_open_with_no_init(index, plan->tuple, plan->mode, + BTR_SEARCH_LEAF, &plan->pcur, + has_search_latch, mtr); + } else { + /* Open the cursor to the start or the end of the index + (FALSE: no init) */ + + btr_pcur_open_at_index_side(plan->asc, index, BTR_SEARCH_LEAF, + &(plan->pcur), FALSE, mtr); + } + + ut_ad(plan->n_rows_prefetched == 0); + ut_ad(plan->n_rows_fetched == 0); + ut_ad(plan->cursor_at_end == FALSE); + + plan->pcur_is_open = TRUE; +} + +/************************************************************************* +Restores a stored pcur position to a table index. */ +static +ibool +row_sel_restore_pcur_pos( +/*=====================*/ + /* out: TRUE if the cursor should be moved to + the next record after we return from this + function (moved to the previous, in the case + of a descending cursor) without processing + again the current cursor record */ + plan_t* plan, /* in: table plan */ + mtr_t* mtr) /* in: mtr */ +{ + ibool equal_position; + ulint relative_position; + + ut_ad(!plan->cursor_at_end); + + relative_position = btr_pcur_get_rel_pos(&(plan->pcur)); + + equal_position = btr_pcur_restore_position(BTR_SEARCH_LEAF, + &(plan->pcur), mtr); + + /* If the cursor is traveling upwards, and relative_position is + + (1) BTR_PCUR_BEFORE: this is not allowed, as we did not have a lock + yet on the successor of the page infimum; + (2) BTR_PCUR_AFTER: btr_pcur_restore_position placed the cursor on the + first record GREATER than the predecessor of a page supremum; we have + not yet processed the cursor record: no need to move the cursor to the + next record; + (3) BTR_PCUR_ON: btr_pcur_restore_position placed the cursor on the + last record LESS or EQUAL to the old stored user record; (a) if + equal_position is FALSE, this means that the cursor is now on a record + less than the old user record, and we must move to the next record; + (b) if equal_position is TRUE, then if + plan->stored_cursor_rec_processed is TRUE, we must move to the next + record, else there is no need to move the cursor. */ + + if (plan->asc) { + if (relative_position == BTR_PCUR_ON) { + + if (equal_position) { + + return(plan->stored_cursor_rec_processed); + } + + return(TRUE); + } + + ut_ad(relative_position == BTR_PCUR_AFTER + || relative_position == BTR_PCUR_AFTER_LAST_IN_TREE); + + return(FALSE); + } + + /* If the cursor is traveling downwards, and relative_position is + + (1) BTR_PCUR_BEFORE: btr_pcur_restore_position placed the cursor on + the last record LESS than the successor of a page infimum; we have not + processed the cursor record: no need to move the cursor; + (2) BTR_PCUR_AFTER: btr_pcur_restore_position placed the cursor on the + first record GREATER than the predecessor of a page supremum; we have + processed the cursor record: we should move the cursor to the previous + record; + (3) BTR_PCUR_ON: btr_pcur_restore_position placed the cursor on the + last record LESS or EQUAL to the old stored user record; (a) if + equal_position is FALSE, this means that the cursor is now on a record + less than the old user record, and we need not move to the previous + record; (b) if equal_position is TRUE, then if + plan->stored_cursor_rec_processed is TRUE, we must move to the previous + record, else there is no need to move the cursor. */ + + if (relative_position == BTR_PCUR_BEFORE + || relative_position == BTR_PCUR_BEFORE_FIRST_IN_TREE) { + + return(FALSE); + } + + if (relative_position == BTR_PCUR_ON) { + + if (equal_position) { + + return(plan->stored_cursor_rec_processed); + } + + return(FALSE); + } + + ut_ad(relative_position == BTR_PCUR_AFTER + || relative_position == BTR_PCUR_AFTER_LAST_IN_TREE); + + return(TRUE); +} + +/************************************************************************* +Resets a plan cursor to a closed state. */ +UNIV_INLINE +void +plan_reset_cursor( +/*==============*/ + plan_t* plan) /* in: plan */ +{ + plan->pcur_is_open = FALSE; + plan->cursor_at_end = FALSE; + plan->n_rows_fetched = 0; + plan->n_rows_prefetched = 0; +} + +/************************************************************************* +Tries to do a shortcut to fetch a clustered index record with a unique key, +using the hash index if possible (not always). */ +static +ulint +row_sel_try_search_shortcut( +/*========================*/ + /* out: SEL_FOUND, SEL_EXHAUSTED, SEL_RETRY */ + sel_node_t* node, /* in: select node for a consistent read */ + plan_t* plan, /* in: plan for a unique search in clustered + index */ + mtr_t* mtr) /* in: mtr */ +{ + dict_index_t* index; + rec_t* rec; + mem_heap_t* heap = NULL; + ulint offsets_[REC_OFFS_NORMAL_SIZE]; + ulint* offsets = offsets_; + ulint ret; + rec_offs_init(offsets_); + + index = plan->index; + + ut_ad(node->read_view); + ut_ad(plan->unique_search); + ut_ad(!plan->must_get_clust); +#ifdef UNIV_SYNC_DEBUG + ut_ad(rw_lock_own(&btr_search_latch, RW_LOCK_SHARED)); +#endif /* UNIV_SYNC_DEBUG */ + + row_sel_open_pcur(plan, TRUE, mtr); + + rec = btr_pcur_get_rec(&(plan->pcur)); + + if (!page_rec_is_user_rec(rec)) { + + return(SEL_RETRY); + } + + ut_ad(plan->mode == PAGE_CUR_GE); + + /* As the cursor is now placed on a user record after a search with + the mode PAGE_CUR_GE, the up_match field in the cursor tells how many + fields in the user record matched to the search tuple */ + + if (btr_pcur_get_up_match(&(plan->pcur)) < plan->n_exact_match) { + + return(SEL_EXHAUSTED); + } + + /* This is a non-locking consistent read: if necessary, fetch + a previous version of the record */ + + offsets = rec_get_offsets(rec, index, offsets, ULINT_UNDEFINED, &heap); + + if (dict_index_is_clust(index)) { + if (!lock_clust_rec_cons_read_sees(rec, index, offsets, + node->read_view)) { + ret = SEL_RETRY; + goto func_exit; + } + } else if (!lock_sec_rec_cons_read_sees(rec, node->read_view)) { + + ret = SEL_RETRY; + goto func_exit; + } + + /* Test the deleted flag. */ + + if (rec_get_deleted_flag(rec, dict_table_is_comp(plan->table))) { + + ret = SEL_EXHAUSTED; + goto func_exit; + } + + /* Fetch the columns needed in test conditions. The index + record is protected by a page latch that was acquired when + plan->pcur was positioned. The latch will not be released + until mtr_commit(mtr). */ + + row_sel_fetch_columns(index, rec, offsets, + UT_LIST_GET_FIRST(plan->columns)); + + /* Test the rest of search conditions */ + + if (!row_sel_test_other_conds(plan)) { + + ret = SEL_EXHAUSTED; + goto func_exit; + } + + ut_ad(plan->pcur.latch_mode == BTR_SEARCH_LEAF); + + plan->n_rows_fetched++; + ret = SEL_FOUND; +func_exit: + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } + return(ret); +} + +/************************************************************************* +Performs a select step. */ +static +ulint +row_sel( +/*====*/ + /* out: DB_SUCCESS or error code */ + sel_node_t* node, /* in: select node */ + que_thr_t* thr) /* in: query thread */ +{ + dict_index_t* index; + plan_t* plan; + mtr_t mtr; + ibool moved; + rec_t* rec; + rec_t* old_vers; + rec_t* clust_rec; + ibool search_latch_locked; + ibool consistent_read; + + /* The following flag becomes TRUE when we are doing a + consistent read from a non-clustered index and we must look + at the clustered index to find out the previous delete mark + state of the non-clustered record: */ + + ibool cons_read_requires_clust_rec = FALSE; + ulint cost_counter = 0; + ibool cursor_just_opened; + ibool must_go_to_next; + ibool mtr_has_extra_clust_latch = FALSE; + /* TRUE if the search was made using + a non-clustered index, and we had to + access the clustered record: now &mtr + contains a clustered index latch, and + &mtr must be committed before we move + to the next non-clustered record */ + ulint found_flag; + ulint err; + mem_heap_t* heap = NULL; + ulint offsets_[REC_OFFS_NORMAL_SIZE]; + ulint* offsets = offsets_; + rec_offs_init(offsets_); + + ut_ad(thr->run_node == node); + + search_latch_locked = FALSE; + + if (node->read_view) { + /* In consistent reads, we try to do with the hash index and + not to use the buffer page get. This is to reduce memory bus + load resulting from semaphore operations. The search latch + will be s-locked when we access an index with a unique search + condition, but not locked when we access an index with a + less selective search condition. */ + + consistent_read = TRUE; + } else { + consistent_read = FALSE; + } + +table_loop: + /* TABLE LOOP + ---------- + This is the outer major loop in calculating a join. We come here when + node->fetch_table changes, and after adding a row to aggregate totals + and, of course, when this function is called. */ + + ut_ad(mtr_has_extra_clust_latch == FALSE); + + plan = sel_node_get_nth_plan(node, node->fetch_table); + index = plan->index; + + if (plan->n_rows_prefetched > 0) { + sel_pop_prefetched_row(plan); + + goto next_table_no_mtr; + } + + if (plan->cursor_at_end) { + /* The cursor has already reached the result set end: no more + rows to process for this table cursor, as also the prefetch + stack was empty */ + + ut_ad(plan->pcur_is_open); + + goto table_exhausted_no_mtr; + } + + /* Open a cursor to index, or restore an open cursor position */ + + mtr_start(&mtr); + + if (consistent_read && plan->unique_search && !plan->pcur_is_open + && !plan->must_get_clust + && !plan->table->big_rows) { + if (!search_latch_locked) { + rw_lock_s_lock(&btr_search_latch); + + search_latch_locked = TRUE; + } else if (rw_lock_get_writer(&btr_search_latch) == RW_LOCK_WAIT_EX) { + + /* There is an x-latch request waiting: release the + s-latch for a moment; as an s-latch here is often + kept for some 10 searches before being released, + a waiting x-latch request would block other threads + from acquiring an s-latch for a long time, lowering + performance significantly in multiprocessors. */ + + rw_lock_s_unlock(&btr_search_latch); + rw_lock_s_lock(&btr_search_latch); + } + + found_flag = row_sel_try_search_shortcut(node, plan, &mtr); + + if (found_flag == SEL_FOUND) { + + goto next_table; + + } else if (found_flag == SEL_EXHAUSTED) { + + goto table_exhausted; + } + + ut_ad(found_flag == SEL_RETRY); + + plan_reset_cursor(plan); + + mtr_commit(&mtr); + mtr_start(&mtr); + } + + if (search_latch_locked) { + rw_lock_s_unlock(&btr_search_latch); + + search_latch_locked = FALSE; + } + + if (!plan->pcur_is_open) { + /* Evaluate the expressions to build the search tuple and + open the cursor */ + + row_sel_open_pcur(plan, search_latch_locked, &mtr); + + cursor_just_opened = TRUE; + + /* A new search was made: increment the cost counter */ + cost_counter++; + } else { + /* Restore pcur position to the index */ + + must_go_to_next = row_sel_restore_pcur_pos(plan, &mtr); + + cursor_just_opened = FALSE; + + if (must_go_to_next) { + /* We have already processed the cursor record: move + to the next */ + + goto next_rec; + } + } + +rec_loop: + /* RECORD LOOP + ----------- + In this loop we use pcur and try to fetch a qualifying row, and + also fill the prefetch buffer for this table if n_rows_fetched has + exceeded a threshold. While we are inside this loop, the following + holds: + (1) &mtr is started, + (2) pcur is positioned and open. + + NOTE that if cursor_just_opened is TRUE here, it means that we came + to this point right after row_sel_open_pcur. */ + + ut_ad(mtr_has_extra_clust_latch == FALSE); + + rec = btr_pcur_get_rec(&(plan->pcur)); + + /* PHASE 1: Set a lock if specified */ + + if (!node->asc && cursor_just_opened + && !page_rec_is_supremum(rec)) { + + /* When we open a cursor for a descending search, we must set + a next-key lock on the successor record: otherwise it would + be possible to insert new records next to the cursor position, + and it might be that these new records should appear in the + search result set, resulting in the phantom problem. */ + + if (!consistent_read) { + + /* If innodb_locks_unsafe_for_binlog option is used + or this session is using READ COMMITTED isolation + level, we lock only the record, i.e., next-key + locking is not used. */ + + rec_t* next_rec = page_rec_get_next(rec); + ulint lock_type; + trx_t* trx; + + trx = thr_get_trx(thr); + + offsets = rec_get_offsets(next_rec, index, offsets, + ULINT_UNDEFINED, &heap); + + if (srv_locks_unsafe_for_binlog + || trx->isolation_level + == TRX_ISO_READ_COMMITTED) { + + if (page_rec_is_supremum(next_rec)) { + + goto skip_lock; + } + + lock_type = LOCK_REC_NOT_GAP; + } else { + lock_type = LOCK_ORDINARY; + } + + err = sel_set_rec_lock(btr_pcur_get_block(&plan->pcur), + next_rec, index, offsets, + node->row_lock_mode, + lock_type, thr); + + if (err != DB_SUCCESS) { + /* Note that in this case we will store in pcur + the PREDECESSOR of the record we are waiting + the lock for */ + + goto lock_wait_or_error; + } + } + } + +skip_lock: + if (page_rec_is_infimum(rec)) { + + /* The infimum record on a page cannot be in the result set, + and neither can a record lock be placed on it: we skip such + a record. We also increment the cost counter as we may have + processed yet another page of index. */ + + cost_counter++; + + goto next_rec; + } + + if (!consistent_read) { + /* Try to place a lock on the index record */ + + /* If innodb_locks_unsafe_for_binlog option is used + or this session is using READ COMMITTED isolation level, + we lock only the record, i.e., next-key locking is + not used. */ + + ulint lock_type; + trx_t* trx; + + offsets = rec_get_offsets(rec, index, offsets, + ULINT_UNDEFINED, &heap); + + trx = thr_get_trx(thr); + + if (srv_locks_unsafe_for_binlog + || trx->isolation_level == TRX_ISO_READ_COMMITTED) { + + if (page_rec_is_supremum(rec)) { + + goto next_rec; + } + + lock_type = LOCK_REC_NOT_GAP; + } else { + lock_type = LOCK_ORDINARY; + } + + err = sel_set_rec_lock(btr_pcur_get_block(&plan->pcur), + rec, index, offsets, + node->row_lock_mode, lock_type, thr); + + if (err != DB_SUCCESS) { + + goto lock_wait_or_error; + } + } + + if (page_rec_is_supremum(rec)) { + + /* A page supremum record cannot be in the result set: skip + it now when we have placed a possible lock on it */ + + goto next_rec; + } + + ut_ad(page_rec_is_user_rec(rec)); + + if (cost_counter > SEL_COST_LIMIT) { + + /* Now that we have placed the necessary locks, we can stop + for a while and store the cursor position; NOTE that if we + would store the cursor position BEFORE placing a record lock, + it might happen that the cursor would jump over some records + that another transaction could meanwhile insert adjacent to + the cursor: this would result in the phantom problem. */ + + goto stop_for_a_while; + } + + /* PHASE 2: Check a mixed index mix id if needed */ + + if (plan->unique_search && cursor_just_opened) { + + ut_ad(plan->mode == PAGE_CUR_GE); + + /* As the cursor is now placed on a user record after a search + with the mode PAGE_CUR_GE, the up_match field in the cursor + tells how many fields in the user record matched to the search + tuple */ + + if (btr_pcur_get_up_match(&(plan->pcur)) + < plan->n_exact_match) { + goto table_exhausted; + } + + /* Ok, no need to test end_conds or mix id */ + + } + + /* We are ready to look at a possible new index entry in the result + set: the cursor is now placed on a user record */ + + /* PHASE 3: Get previous version in a consistent read */ + + cons_read_requires_clust_rec = FALSE; + offsets = rec_get_offsets(rec, index, offsets, ULINT_UNDEFINED, &heap); + + if (consistent_read) { + /* This is a non-locking consistent read: if necessary, fetch + a previous version of the record */ + + if (dict_index_is_clust(index)) { + + if (!lock_clust_rec_cons_read_sees(rec, index, offsets, + node->read_view)) { + + err = row_sel_build_prev_vers( + node->read_view, index, rec, + &offsets, &heap, &plan->old_vers_heap, + &old_vers, &mtr); + + if (err != DB_SUCCESS) { + + goto lock_wait_or_error; + } + + if (old_vers == NULL) { + offsets = rec_get_offsets( + rec, index, offsets, + ULINT_UNDEFINED, &heap); + + /* Fetch the columns needed in + test conditions. The clustered + index record is protected by a + page latch that was acquired + by row_sel_open_pcur() or + row_sel_restore_pcur_pos(). + The latch will not be released + until mtr_commit(mtr). */ + + row_sel_fetch_columns( + index, rec, offsets, + UT_LIST_GET_FIRST( + plan->columns)); + + if (!row_sel_test_end_conds(plan)) { + + goto table_exhausted; + } + + goto next_rec; + } + + rec = old_vers; + } + } else if (!lock_sec_rec_cons_read_sees(rec, + node->read_view)) { + cons_read_requires_clust_rec = TRUE; + } + } + + /* PHASE 4: Test search end conditions and deleted flag */ + + /* Fetch the columns needed in test conditions. The record is + protected by a page latch that was acquired by + row_sel_open_pcur() or row_sel_restore_pcur_pos(). The latch + will not be released until mtr_commit(mtr). */ + + row_sel_fetch_columns(index, rec, offsets, + UT_LIST_GET_FIRST(plan->columns)); + + /* Test the selection end conditions: these can only contain columns + which already are found in the index, even though the index might be + non-clustered */ + + if (plan->unique_search && cursor_just_opened) { + + /* No test necessary: the test was already made above */ + + } else if (!row_sel_test_end_conds(plan)) { + + goto table_exhausted; + } + + if (rec_get_deleted_flag(rec, dict_table_is_comp(plan->table)) + && !cons_read_requires_clust_rec) { + + /* The record is delete marked: we can skip it if this is + not a consistent read which might see an earlier version + of a non-clustered index record */ + + if (plan->unique_search) { + + goto table_exhausted; + } + + goto next_rec; + } + + /* PHASE 5: Get the clustered index record, if needed and if we did + not do the search using the clustered index */ + + if (plan->must_get_clust || cons_read_requires_clust_rec) { + + /* It was a non-clustered index and we must fetch also the + clustered index record */ + + err = row_sel_get_clust_rec(node, plan, rec, thr, &clust_rec, + &mtr); + mtr_has_extra_clust_latch = TRUE; + + if (err != DB_SUCCESS) { + + goto lock_wait_or_error; + } + + /* Retrieving the clustered record required a search: + increment the cost counter */ + + cost_counter++; + + if (clust_rec == NULL) { + /* The record did not exist in the read view */ + ut_ad(consistent_read); + + goto next_rec; + } + + if (rec_get_deleted_flag(clust_rec, + dict_table_is_comp(plan->table))) { + + /* The record is delete marked: we can skip it */ + + goto next_rec; + } + + if (node->can_get_updated) { + + btr_pcur_store_position(&(plan->clust_pcur), &mtr); + } + } + + /* PHASE 6: Test the rest of search conditions */ + + if (!row_sel_test_other_conds(plan)) { + + if (plan->unique_search) { + + goto table_exhausted; + } + + goto next_rec; + } + + /* PHASE 7: We found a new qualifying row for the current table; push + the row if prefetch is on, or move to the next table in the join */ + + plan->n_rows_fetched++; + + ut_ad(plan->pcur.latch_mode == BTR_SEARCH_LEAF); + + if ((plan->n_rows_fetched <= SEL_PREFETCH_LIMIT) + || plan->unique_search || plan->no_prefetch + || plan->table->big_rows) { + + /* No prefetch in operation: go to the next table */ + + goto next_table; + } + + sel_push_prefetched_row(plan); + + if (plan->n_rows_prefetched == SEL_MAX_N_PREFETCH) { + + /* The prefetch buffer is now full */ + + sel_pop_prefetched_row(plan); + + goto next_table; + } + +next_rec: + ut_ad(!search_latch_locked); + + if (mtr_has_extra_clust_latch) { + + /* We must commit &mtr if we are moving to the next + non-clustered index record, because we could break the + latching order if we would access a different clustered + index page right away without releasing the previous. */ + + goto commit_mtr_for_a_while; + } + + if (node->asc) { + moved = btr_pcur_move_to_next(&(plan->pcur), &mtr); + } else { + moved = btr_pcur_move_to_prev(&(plan->pcur), &mtr); + } + + if (!moved) { + + goto table_exhausted; + } + + cursor_just_opened = FALSE; + + /* END OF RECORD LOOP + ------------------ */ + goto rec_loop; + +next_table: + /* We found a record which satisfies the conditions: we can move to + the next table or return a row in the result set */ + + ut_ad(btr_pcur_is_on_user_rec(&plan->pcur)); + + if (plan->unique_search && !node->can_get_updated) { + + plan->cursor_at_end = TRUE; + } else { + ut_ad(!search_latch_locked); + + plan->stored_cursor_rec_processed = TRUE; + + btr_pcur_store_position(&(plan->pcur), &mtr); + } + + mtr_commit(&mtr); + + mtr_has_extra_clust_latch = FALSE; + +next_table_no_mtr: + /* If we use 'goto' to this label, it means that the row was popped + from the prefetched rows stack, and &mtr is already committed */ + + if (node->fetch_table + 1 == node->n_tables) { + + sel_eval_select_list(node); + + if (node->is_aggregate) { + + goto table_loop; + } + + sel_assign_into_var_values(node->into_list, node); + + thr->run_node = que_node_get_parent(node); + + err = DB_SUCCESS; + goto func_exit; + } + + node->fetch_table++; + + /* When we move to the next table, we first reset the plan cursor: + we do not care about resetting it when we backtrack from a table */ + + plan_reset_cursor(sel_node_get_nth_plan(node, node->fetch_table)); + + goto table_loop; + +table_exhausted: + /* The table cursor pcur reached the result set end: backtrack to the + previous table in the join if we do not have cached prefetched rows */ + + plan->cursor_at_end = TRUE; + + mtr_commit(&mtr); + + mtr_has_extra_clust_latch = FALSE; + + if (plan->n_rows_prefetched > 0) { + /* The table became exhausted during a prefetch */ + + sel_pop_prefetched_row(plan); + + goto next_table_no_mtr; + } + +table_exhausted_no_mtr: + if (node->fetch_table == 0) { + err = DB_SUCCESS; + + if (node->is_aggregate && !node->aggregate_already_fetched) { + + node->aggregate_already_fetched = TRUE; + + sel_assign_into_var_values(node->into_list, node); + + thr->run_node = que_node_get_parent(node); + } else { + node->state = SEL_NODE_NO_MORE_ROWS; + + thr->run_node = que_node_get_parent(node); + } + + goto func_exit; + } + + node->fetch_table--; + + goto table_loop; + +stop_for_a_while: + /* Return control for a while to que_run_threads, so that runaway + queries can be canceled. NOTE that when we come here, we must, in a + locking read, have placed the necessary (possibly waiting request) + record lock on the cursor record or its successor: when we reposition + the cursor, this record lock guarantees that nobody can meanwhile have + inserted new records which should have appeared in the result set, + which would result in the phantom problem. */ + + ut_ad(!search_latch_locked); + + plan->stored_cursor_rec_processed = FALSE; + btr_pcur_store_position(&(plan->pcur), &mtr); + + mtr_commit(&mtr); + +#ifdef UNIV_SYNC_DEBUG + ut_ad(sync_thread_levels_empty_gen(TRUE)); +#endif /* UNIV_SYNC_DEBUG */ + err = DB_SUCCESS; + goto func_exit; + +commit_mtr_for_a_while: + /* Stores the cursor position and commits &mtr; this is used if + &mtr may contain latches which would break the latching order if + &mtr would not be committed and the latches released. */ + + plan->stored_cursor_rec_processed = TRUE; + + ut_ad(!search_latch_locked); + btr_pcur_store_position(&(plan->pcur), &mtr); + + mtr_commit(&mtr); + + mtr_has_extra_clust_latch = FALSE; + +#ifdef UNIV_SYNC_DEBUG + ut_ad(sync_thread_levels_empty_gen(TRUE)); +#endif /* UNIV_SYNC_DEBUG */ + + goto table_loop; + +lock_wait_or_error: + /* See the note at stop_for_a_while: the same holds for this case */ + + ut_ad(!btr_pcur_is_before_first_on_page(&plan->pcur) || !node->asc); + ut_ad(!search_latch_locked); + + plan->stored_cursor_rec_processed = FALSE; + btr_pcur_store_position(&(plan->pcur), &mtr); + + mtr_commit(&mtr); + +#ifdef UNIV_SYNC_DEBUG + ut_ad(sync_thread_levels_empty_gen(TRUE)); +#endif /* UNIV_SYNC_DEBUG */ + +func_exit: + if (search_latch_locked) { + rw_lock_s_unlock(&btr_search_latch); + } + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } + return(err); +} + +/************************************************************************** +Performs a select step. This is a high-level function used in SQL execution +graphs. */ +UNIV_INTERN +que_thr_t* +row_sel_step( +/*=========*/ + /* out: query thread to run next or NULL */ + que_thr_t* thr) /* in: query thread */ +{ + ulint i_lock_mode; + sym_node_t* table_node; + sel_node_t* node; + ulint err; + + ut_ad(thr); + + node = thr->run_node; + + ut_ad(que_node_get_type(node) == QUE_NODE_SELECT); + + /* If this is a new time this node is executed (or when execution + resumes after wait for a table intention lock), set intention locks + on the tables, or assign a read view */ + + if (node->into_list && (thr->prev_node == que_node_get_parent(node))) { + + node->state = SEL_NODE_OPEN; + } + + if (node->state == SEL_NODE_OPEN) { + + /* It may be that the current session has not yet started + its transaction, or it has been committed: */ + + trx_start_if_not_started(thr_get_trx(thr)); + + plan_reset_cursor(sel_node_get_nth_plan(node, 0)); + + if (node->consistent_read) { + /* Assign a read view for the query */ + node->read_view = trx_assign_read_view( + thr_get_trx(thr)); + } else { + if (node->set_x_locks) { + i_lock_mode = LOCK_IX; + } else { + i_lock_mode = LOCK_IS; + } + + table_node = node->table_list; + + while (table_node) { + err = lock_table(0, table_node->table, + i_lock_mode, thr); + if (err != DB_SUCCESS) { + thr_get_trx(thr)->error_state = err; + + return(NULL); + } + + table_node = que_node_get_next(table_node); + } + } + + /* If this is an explicit cursor, copy stored procedure + variable values, so that the values cannot change between + fetches (currently, we copy them also for non-explicit + cursors) */ + + if (node->explicit_cursor + && UT_LIST_GET_FIRST(node->copy_variables)) { + + row_sel_copy_input_variable_vals(node); + } + + node->state = SEL_NODE_FETCH; + node->fetch_table = 0; + + if (node->is_aggregate) { + /* Reset the aggregate total values */ + sel_reset_aggregate_vals(node); + } + } + + err = row_sel(node, thr); + + /* NOTE! if queries are parallelized, the following assignment may + have problems; the assignment should be made only if thr is the + only top-level thr in the graph: */ + + thr->graph->last_sel_node = node; + + if (err != DB_SUCCESS) { + thr_get_trx(thr)->error_state = err; + + return(NULL); + } + + return(thr); +} + +/************************************************************************** +Performs a fetch for a cursor. */ +UNIV_INTERN +que_thr_t* +fetch_step( +/*=======*/ + /* out: query thread to run next or NULL */ + que_thr_t* thr) /* in: query thread */ +{ + sel_node_t* sel_node; + fetch_node_t* node; + + ut_ad(thr); + + node = thr->run_node; + sel_node = node->cursor_def; + + ut_ad(que_node_get_type(node) == QUE_NODE_FETCH); + + if (thr->prev_node != que_node_get_parent(node)) { + + if (sel_node->state != SEL_NODE_NO_MORE_ROWS) { + + if (node->into_list) { + sel_assign_into_var_values(node->into_list, + sel_node); + } else { + void* ret = (*node->func->func)( + sel_node, node->func->arg); + + if (!ret) { + sel_node->state + = SEL_NODE_NO_MORE_ROWS; + } + } + } + + thr->run_node = que_node_get_parent(node); + + return(thr); + } + + /* Make the fetch node the parent of the cursor definition for + the time of the fetch, so that execution knows to return to this + fetch node after a row has been selected or we know that there is + no row left */ + + sel_node->common.parent = node; + + if (sel_node->state == SEL_NODE_CLOSED) { + fprintf(stderr, + "InnoDB: Error: fetch called on a closed cursor\n"); + + thr_get_trx(thr)->error_state = DB_ERROR; + + return(NULL); + } + + thr->run_node = sel_node; + + return(thr); +} + +/******************************************************************** +Sample callback function for fetch that prints each row.*/ +UNIV_INTERN +void* +row_fetch_print( +/*============*/ + /* out: always returns non-NULL */ + void* row, /* in: sel_node_t* */ + void* user_arg) /* in: not used */ +{ + sel_node_t* node = row; + que_node_t* exp; + ulint i = 0; + + UT_NOT_USED(user_arg); + + fprintf(stderr, "row_fetch_print: row %p\n", row); + + exp = node->select_list; + + while (exp) { + dfield_t* dfield = que_node_get_val(exp); + const dtype_t* type = dfield_get_type(dfield); + + fprintf(stderr, " column %lu:\n", (ulong)i); + + dtype_print(type); + putc('\n', stderr); + + if (dfield_get_len(dfield) != UNIV_SQL_NULL) { + ut_print_buf(stderr, dfield_get_data(dfield), + dfield_get_len(dfield)); + putc('\n', stderr); + } else { + fputs(" <NULL>;\n", stderr); + } + + exp = que_node_get_next(exp); + i++; + } + + return((void*)42); +} + +/******************************************************************** +Callback function for fetch that stores an unsigned 4 byte integer to the +location pointed. The column's type must be DATA_INT, DATA_UNSIGNED, length += 4. */ +UNIV_INTERN +void* +row_fetch_store_uint4( +/*==================*/ + /* out: always returns NULL */ + void* row, /* in: sel_node_t* */ + void* user_arg) /* in: data pointer */ +{ + sel_node_t* node = row; + ib_uint32_t* val = user_arg; + ulint tmp; + + dfield_t* dfield = que_node_get_val(node->select_list); + const dtype_t* type = dfield_get_type(dfield); + ulint len = dfield_get_len(dfield); + + ut_a(dtype_get_mtype(type) == DATA_INT); + ut_a(dtype_get_prtype(type) & DATA_UNSIGNED); + ut_a(len == 4); + + tmp = mach_read_from_4(dfield_get_data(dfield)); + *val = (ib_uint32_t) tmp; + + return(NULL); +} + +/*************************************************************** +Prints a row in a select result. */ +UNIV_INTERN +que_thr_t* +row_printf_step( +/*============*/ + /* out: query thread to run next or NULL */ + que_thr_t* thr) /* in: query thread */ +{ + row_printf_node_t* node; + sel_node_t* sel_node; + que_node_t* arg; + + ut_ad(thr); + + node = thr->run_node; + + sel_node = node->sel_node; + + ut_ad(que_node_get_type(node) == QUE_NODE_ROW_PRINTF); + + if (thr->prev_node == que_node_get_parent(node)) { + + /* Reset the cursor */ + sel_node->state = SEL_NODE_OPEN; + + /* Fetch next row to print */ + + thr->run_node = sel_node; + + return(thr); + } + + if (sel_node->state != SEL_NODE_FETCH) { + + ut_ad(sel_node->state == SEL_NODE_NO_MORE_ROWS); + + /* No more rows to print */ + + thr->run_node = que_node_get_parent(node); + + return(thr); + } + + arg = sel_node->select_list; + + while (arg) { + dfield_print_also_hex(que_node_get_val(arg)); + + fputs(" ::: ", stderr); + + arg = que_node_get_next(arg); + } + + putc('\n', stderr); + + /* Fetch next row to print */ + + thr->run_node = sel_node; + + return(thr); +} + +/******************************************************************** +Converts a key value stored in MySQL format to an Innobase dtuple. The last +field of the key value may be just a prefix of a fixed length field: hence +the parameter key_len. But currently we do not allow search keys where the +last field is only a prefix of the full key field len and print a warning if +such appears. A counterpart of this function is +ha_innobase::store_key_val_for_row() in ha_innodb.cc. */ +UNIV_INTERN +void +row_sel_convert_mysql_key_to_innobase( +/*==================================*/ + dtuple_t* tuple, /* in/out: tuple where to build; + NOTE: we assume that the type info + in the tuple is already according + to index! */ + byte* buf, /* in: buffer to use in field + conversions */ + ulint buf_len, /* in: buffer length */ + dict_index_t* index, /* in: index of the key value */ + const byte* key_ptr, /* in: MySQL key value */ + ulint key_len, /* in: MySQL key value length */ + trx_t* trx) /* in: transaction */ +{ + byte* original_buf = buf; + const byte* original_key_ptr = key_ptr; + dict_field_t* field; + dfield_t* dfield; + ulint data_offset; + ulint data_len; + ulint data_field_len; + ibool is_null; + const byte* key_end; + ulint n_fields = 0; + + /* For documentation of the key value storage format in MySQL, see + ha_innobase::store_key_val_for_row() in ha_innodb.cc. */ + + key_end = key_ptr + key_len; + + /* Permit us to access any field in the tuple (ULINT_MAX): */ + + dtuple_set_n_fields(tuple, ULINT_MAX); + + dfield = dtuple_get_nth_field(tuple, 0); + field = dict_index_get_nth_field(index, 0); + + if (UNIV_UNLIKELY(dfield_get_type(dfield)->mtype == DATA_SYS)) { + /* A special case: we are looking for a position in the + generated clustered index which InnoDB automatically added + to a table with no primary key: the first and the only + ordering column is ROW_ID which InnoDB stored to the key_ptr + buffer. */ + + ut_a(key_len == DATA_ROW_ID_LEN); + + dfield_set_data(dfield, key_ptr, DATA_ROW_ID_LEN); + + dtuple_set_n_fields(tuple, 1); + + return; + } + + while (key_ptr < key_end) { + + ulint type = dfield_get_type(dfield)->mtype; + ut_a(field->col->mtype == type); + + data_offset = 0; + is_null = FALSE; + + if (!(dfield_get_type(dfield)->prtype & DATA_NOT_NULL)) { + /* The first byte in the field tells if this is + an SQL NULL value */ + + data_offset = 1; + + if (*key_ptr != 0) { + dfield_set_null(dfield); + + is_null = TRUE; + } + } + + /* Calculate data length and data field total length */ + + if (type == DATA_BLOB) { + /* The key field is a column prefix of a BLOB or + TEXT */ + + ut_a(field->prefix_len > 0); + + /* MySQL stores the actual data length to the first 2 + bytes after the optional SQL NULL marker byte. The + storage format is little-endian, that is, the most + significant byte at a higher address. In UTF-8, MySQL + seems to reserve field->prefix_len bytes for + storing this field in the key value buffer, even + though the actual value only takes data_len bytes + from the start. */ + + data_len = key_ptr[data_offset] + + 256 * key_ptr[data_offset + 1]; + data_field_len = data_offset + 2 + field->prefix_len; + + data_offset += 2; + + /* Now that we know the length, we store the column + value like it would be a fixed char field */ + + } else if (field->prefix_len > 0) { + /* Looks like MySQL pads unused end bytes in the + prefix with space. Therefore, also in UTF-8, it is ok + to compare with a prefix containing full prefix_len + bytes, and no need to take at most prefix_len / 3 + UTF-8 characters from the start. + If the prefix is used as the upper end of a LIKE + 'abc%' query, then MySQL pads the end with chars + 0xff. TODO: in that case does it any harm to compare + with the full prefix_len bytes. How do characters + 0xff in UTF-8 behave? */ + + data_len = field->prefix_len; + data_field_len = data_offset + data_len; + } else { + data_len = dfield_get_type(dfield)->len; + data_field_len = data_offset + data_len; + } + + if (UNIV_UNLIKELY + (dtype_get_mysql_type(dfield_get_type(dfield)) + == DATA_MYSQL_TRUE_VARCHAR) + && UNIV_LIKELY(type != DATA_INT)) { + /* In a MySQL key value format, a true VARCHAR is + always preceded by 2 bytes of a length field. + dfield_get_type(dfield)->len returns the maximum + 'payload' len in bytes. That does not include the + 2 bytes that tell the actual data length. + + We added the check != DATA_INT to make sure we do + not treat MySQL ENUM or SET as a true VARCHAR! */ + + data_len += 2; + data_field_len += 2; + } + + /* Storing may use at most data_len bytes of buf */ + + if (UNIV_LIKELY(!is_null)) { + row_mysql_store_col_in_innobase_format( + dfield, buf, + FALSE, /* MySQL key value format col */ + key_ptr + data_offset, data_len, + dict_table_is_comp(index->table)); + buf += data_len; + } + + key_ptr += data_field_len; + + if (UNIV_UNLIKELY(key_ptr > key_end)) { + /* The last field in key was not a complete key field + but a prefix of it. + + Print a warning about this! HA_READ_PREFIX_LAST does + not currently work in InnoDB with partial-field key + value prefixes. Since MySQL currently uses a padding + trick to calculate LIKE 'abc%' type queries there + should never be partial-field prefixes in searches. */ + + ut_print_timestamp(stderr); + + fputs(" InnoDB: Warning: using a partial-field" + " key prefix in search.\n" + "InnoDB: ", stderr); + dict_index_name_print(stderr, trx, index); + fprintf(stderr, ". Last data field length %lu bytes,\n" + "InnoDB: key ptr now exceeds" + " key end by %lu bytes.\n" + "InnoDB: Key value in the MySQL format:\n", + (ulong) data_field_len, + (ulong) (key_ptr - key_end)); + fflush(stderr); + ut_print_buf(stderr, original_key_ptr, key_len); + putc('\n', stderr); + + if (!is_null) { + ulint len = dfield_get_len(dfield); + dfield_set_len(dfield, len + - (ulint) (key_ptr - key_end)); + } + } + + n_fields++; + field++; + dfield++; + } + + ut_a(buf <= original_buf + buf_len); + + /* We set the length of tuple to n_fields: we assume that the memory + area allocated for it is big enough (usually bigger than n_fields). */ + + dtuple_set_n_fields(tuple, n_fields); +} + +/****************************************************************** +Stores the row id to the prebuilt struct. */ +static +void +row_sel_store_row_id_to_prebuilt( +/*=============================*/ + row_prebuilt_t* prebuilt, /* in/out: prebuilt */ + const rec_t* index_rec, /* in: record */ + const dict_index_t* index, /* in: index of the record */ + const ulint* offsets) /* in: rec_get_offsets + (index_rec, index) */ +{ + const byte* data; + ulint len; + + ut_ad(rec_offs_validate(index_rec, index, offsets)); + + data = rec_get_nth_field( + index_rec, offsets, + dict_index_get_sys_col_pos(index, DATA_ROW_ID), &len); + + if (UNIV_UNLIKELY(len != DATA_ROW_ID_LEN)) { + fprintf(stderr, + "InnoDB: Error: Row id field is" + " wrong length %lu in ", (ulong) len); + dict_index_name_print(stderr, prebuilt->trx, index); + fprintf(stderr, "\n" + "InnoDB: Field number %lu, record:\n", + (ulong) dict_index_get_sys_col_pos(index, + DATA_ROW_ID)); + rec_print_new(stderr, index_rec, offsets); + putc('\n', stderr); + ut_error; + } + + ut_memcpy(prebuilt->row_id, data, len); +} + +/****************************************************************** +Stores a non-SQL-NULL field in the MySQL format. The counterpart of this +function is row_mysql_store_col_in_innobase_format() in row0mysql.c. */ +static +void +row_sel_field_store_in_mysql_format( +/*================================*/ + byte* dest, /* in/out: buffer where to store; NOTE + that BLOBs are not in themselves + stored here: the caller must allocate + and copy the BLOB into buffer before, + and pass the pointer to the BLOB in + 'data' */ + const mysql_row_templ_t* templ, + /* in: MySQL column template. + Its following fields are referenced: + type, is_unsigned, mysql_col_len, + mbminlen, mbmaxlen */ + const byte* data, /* in: data to store */ + ulint len) /* in: length of the data */ +{ + byte* ptr; + byte* field_end; + byte* pad_ptr; + + ut_ad(len != UNIV_SQL_NULL); + + switch (templ->type) { + case DATA_INT: + /* Convert integer data from Innobase to a little-endian + format, sign bit restored to normal */ + + ptr = dest + len; + + for (;;) { + ptr--; + *ptr = *data; + if (ptr == dest) { + break; + } + data++; + } + + if (!templ->is_unsigned) { + dest[len - 1] = (byte) (dest[len - 1] ^ 128); + } + + ut_ad(templ->mysql_col_len == len); + break; + + case DATA_VARCHAR: + case DATA_VARMYSQL: + case DATA_BINARY: + field_end = dest + templ->mysql_col_len; + + if (templ->mysql_type == DATA_MYSQL_TRUE_VARCHAR) { + /* This is a >= 5.0.3 type true VARCHAR. Store the + length of the data to the first byte or the first + two bytes of dest. */ + + dest = row_mysql_store_true_var_len( + dest, len, templ->mysql_length_bytes); + } + + /* Copy the actual data */ + ut_memcpy(dest, data, len); + + /* Pad with trailing spaces. We pad with spaces also the + unused end of a >= 5.0.3 true VARCHAR column, just in case + MySQL expects its contents to be deterministic. */ + + pad_ptr = dest + len; + + ut_ad(templ->mbminlen <= templ->mbmaxlen); + + /* We handle UCS2 charset strings differently. */ + if (templ->mbminlen == 2) { + /* A space char is two bytes, 0x0020 in UCS2 */ + + if (len & 1) { + /* A 0x20 has been stripped from the column. + Pad it back. */ + + if (pad_ptr < field_end) { + *pad_ptr = 0x20; + pad_ptr++; + } + } + + /* Pad the rest of the string with 0x0020 */ + + while (pad_ptr < field_end) { + *pad_ptr = 0x00; + pad_ptr++; + *pad_ptr = 0x20; + pad_ptr++; + } + } else { + ut_ad(templ->mbminlen == 1); + /* space=0x20 */ + + memset(pad_ptr, 0x20, field_end - pad_ptr); + } + break; + + case DATA_BLOB: + /* Store a pointer to the BLOB buffer to dest: the BLOB was + already copied to the buffer in row_sel_store_mysql_rec */ + + row_mysql_store_blob_ref(dest, templ->mysql_col_len, data, + len); + break; + + case DATA_MYSQL: + memcpy(dest, data, len); + + ut_ad(templ->mysql_col_len >= len); + ut_ad(templ->mbmaxlen >= templ->mbminlen); + + ut_ad(templ->mbmaxlen > templ->mbminlen + || templ->mysql_col_len == len); + /* The following assertion would fail for old tables + containing UTF-8 ENUM columns due to Bug #9526. */ + ut_ad(!templ->mbmaxlen + || !(templ->mysql_col_len % templ->mbmaxlen)); + ut_ad(len * templ->mbmaxlen >= templ->mysql_col_len); + + if (templ->mbminlen != templ->mbmaxlen) { + /* Pad with spaces. This undoes the stripping + done in row0mysql.ic, function + row_mysql_store_col_in_innobase_format(). */ + + memset(dest + len, 0x20, templ->mysql_col_len - len); + } + break; + + default: +#ifdef UNIV_DEBUG + case DATA_SYS_CHILD: + case DATA_SYS: + /* These column types should never be shipped to MySQL. */ + ut_ad(0); + + case DATA_CHAR: + case DATA_FIXBINARY: + case DATA_FLOAT: + case DATA_DOUBLE: + case DATA_DECIMAL: + /* Above are the valid column types for MySQL data. */ +#endif /* UNIV_DEBUG */ + ut_ad(templ->mysql_col_len == len); + memcpy(dest, data, len); + } +} + +/****************************************************************** +Convert a row in the Innobase format to a row in the MySQL format. +Note that the template in prebuilt may advise us to copy only a few +columns to mysql_rec, other columns are left blank. All columns may not +be needed in the query. */ +static +ibool +row_sel_store_mysql_rec( +/*====================*/ + /* out: TRUE if success, FALSE if + could not allocate memory for a BLOB + (though we may also assert in that + case) */ + byte* mysql_rec, /* out: row in the MySQL format */ + row_prebuilt_t* prebuilt, /* in: prebuilt struct */ + const rec_t* rec, /* in: Innobase record in the index + which was described in prebuilt's + template; must be protected by + a page latch */ + const ulint* offsets) /* in: array returned by + rec_get_offsets() */ +{ + mysql_row_templ_t* templ; + mem_heap_t* extern_field_heap = NULL; + mem_heap_t* heap; + const byte* data; + ulint len; + ulint i; + + ut_ad(prebuilt->mysql_template); + ut_ad(prebuilt->default_rec); + ut_ad(rec_offs_validate(rec, NULL, offsets)); + + if (UNIV_LIKELY_NULL(prebuilt->blob_heap)) { + mem_heap_free(prebuilt->blob_heap); + prebuilt->blob_heap = NULL; + } + + for (i = 0; i < prebuilt->n_template; i++) { + + templ = prebuilt->mysql_template + i; + + if (UNIV_UNLIKELY(rec_offs_nth_extern(offsets, + templ->rec_field_no))) { + + /* Copy an externally stored field to the temporary + heap */ + + ut_a(!prebuilt->trx->has_search_latch); + + if (UNIV_UNLIKELY(templ->type == DATA_BLOB)) { + if (prebuilt->blob_heap == NULL) { + prebuilt->blob_heap = mem_heap_create( + UNIV_PAGE_SIZE); + } + + heap = prebuilt->blob_heap; + } else { + extern_field_heap + = mem_heap_create(UNIV_PAGE_SIZE); + + heap = extern_field_heap; + } + + /* NOTE: if we are retrieving a big BLOB, we may + already run out of memory in the next call, which + causes an assert */ + + data = btr_rec_copy_externally_stored_field( + rec, offsets, + dict_table_zip_size(prebuilt->table), + templ->rec_field_no, &len, heap); + + ut_a(len != UNIV_SQL_NULL); + } else { + /* Field is stored in the row. */ + + data = rec_get_nth_field(rec, offsets, + templ->rec_field_no, &len); + + if (UNIV_UNLIKELY(templ->type == DATA_BLOB) + && len != UNIV_SQL_NULL) { + + /* It is a BLOB field locally stored in the + InnoDB record: we MUST copy its contents to + prebuilt->blob_heap here because later code + assumes all BLOB values have been copied to a + safe place. */ + + if (prebuilt->blob_heap == NULL) { + prebuilt->blob_heap = mem_heap_create( + UNIV_PAGE_SIZE); + } + + data = memcpy(mem_heap_alloc( + prebuilt->blob_heap, len), + data, len); + } + } + + if (len != UNIV_SQL_NULL) { + row_sel_field_store_in_mysql_format( + mysql_rec + templ->mysql_col_offset, + templ, data, len); + + /* Cleanup */ + if (extern_field_heap) { + mem_heap_free(extern_field_heap); + extern_field_heap = NULL; + } + + if (templ->mysql_null_bit_mask) { + /* It is a nullable column with a non-NULL + value */ + mysql_rec[templ->mysql_null_byte_offset] + &= ~(byte) templ->mysql_null_bit_mask; + } + } else { + /* MySQL assumes that the field for an SQL + NULL value is set to the default value. */ + + mysql_rec[templ->mysql_null_byte_offset] + |= (byte) templ->mysql_null_bit_mask; + memcpy(mysql_rec + templ->mysql_col_offset, + prebuilt->default_rec + templ->mysql_col_offset, + templ->mysql_col_len); + } + } + + return(TRUE); +} + +/************************************************************************* +Builds a previous version of a clustered index record for a consistent read */ +static +ulint +row_sel_build_prev_vers_for_mysql( +/*==============================*/ + /* out: DB_SUCCESS or error code */ + read_view_t* read_view, /* in: read view */ + dict_index_t* clust_index, /* in: clustered index */ + row_prebuilt_t* prebuilt, /* in: prebuilt struct */ + const rec_t* rec, /* in: record in a clustered index */ + ulint** offsets, /* in/out: offsets returned by + rec_get_offsets(rec, clust_index) */ + mem_heap_t** offset_heap, /* in/out: memory heap from which + the offsets are allocated */ + rec_t** old_vers, /* out: old version, or NULL if the + record does not exist in the view: + i.e., it was freshly inserted + afterwards */ + mtr_t* mtr) /* in: mtr */ +{ + ulint err; + + if (prebuilt->old_vers_heap) { + mem_heap_empty(prebuilt->old_vers_heap); + } else { + prebuilt->old_vers_heap = mem_heap_create(200); + } + + err = row_vers_build_for_consistent_read( + rec, mtr, clust_index, offsets, read_view, offset_heap, + prebuilt->old_vers_heap, old_vers); + return(err); +} + +/************************************************************************* +Retrieves the clustered index record corresponding to a record in a +non-clustered index. Does the necessary locking. Used in the MySQL +interface. */ +static +ulint +row_sel_get_clust_rec_for_mysql( +/*============================*/ + /* out: DB_SUCCESS or error code */ + row_prebuilt_t* prebuilt,/* in: prebuilt struct in the handle */ + dict_index_t* sec_index,/* in: secondary index where rec resides */ + const rec_t* rec, /* in: record in a non-clustered index; if + this is a locking read, then rec is not + allowed to be delete-marked, and that would + not make sense either */ + que_thr_t* thr, /* in: query thread */ + const rec_t** out_rec,/* out: clustered record or an old version of + it, NULL if the old version did not exist + in the read view, i.e., it was a fresh + inserted version */ + ulint** offsets,/* in: offsets returned by + rec_get_offsets(rec, sec_index); + out: offsets returned by + rec_get_offsets(out_rec, clust_index) */ + mem_heap_t** offset_heap,/* in/out: memory heap from which + the offsets are allocated */ + mtr_t* mtr) /* in: mtr used to get access to the + non-clustered record; the same mtr is used to + access the clustered index */ +{ + dict_index_t* clust_index; + const rec_t* clust_rec; + rec_t* old_vers; + ulint err; + trx_t* trx; + + *out_rec = NULL; + trx = thr_get_trx(thr); + + row_build_row_ref_in_tuple(prebuilt->clust_ref, rec, + sec_index, *offsets, trx); + + clust_index = dict_table_get_first_index(sec_index->table); + + btr_pcur_open_with_no_init(clust_index, prebuilt->clust_ref, + PAGE_CUR_LE, BTR_SEARCH_LEAF, + prebuilt->clust_pcur, 0, mtr); + + clust_rec = btr_pcur_get_rec(prebuilt->clust_pcur); + + prebuilt->clust_pcur->trx_if_known = trx; + + /* Note: only if the search ends up on a non-infimum record is the + low_match value the real match to the search tuple */ + + if (!page_rec_is_user_rec(clust_rec) + || btr_pcur_get_low_match(prebuilt->clust_pcur) + < dict_index_get_n_unique(clust_index)) { + + /* In a rare case it is possible that no clust rec is found + for a delete-marked secondary index record: if in row0umod.c + in row_undo_mod_remove_clust_low() we have already removed + the clust rec, while purge is still cleaning and removing + secondary index records associated with earlier versions of + the clustered index record. In that case we know that the + clustered index record did not exist in the read view of + trx. */ + + if (!rec_get_deleted_flag(rec, + dict_table_is_comp(sec_index->table)) + || prebuilt->select_lock_type != LOCK_NONE) { + ut_print_timestamp(stderr); + fputs(" InnoDB: error clustered record" + " for sec rec not found\n" + "InnoDB: ", stderr); + dict_index_name_print(stderr, trx, sec_index); + fputs("\n" + "InnoDB: sec index record ", stderr); + rec_print(stderr, rec, sec_index); + fputs("\n" + "InnoDB: clust index record ", stderr); + rec_print(stderr, clust_rec, clust_index); + putc('\n', stderr); + trx_print(stderr, trx, 600); + + fputs("\n" + "InnoDB: Submit a detailed bug report" + " to http://bugs.mysql.com\n", stderr); + } + + clust_rec = NULL; + + goto func_exit; + } + + *offsets = rec_get_offsets(clust_rec, clust_index, *offsets, + ULINT_UNDEFINED, offset_heap); + + if (prebuilt->select_lock_type != LOCK_NONE) { + /* Try to place a lock on the index record; we are searching + the clust rec with a unique condition, hence + we set a LOCK_REC_NOT_GAP type lock */ + + err = lock_clust_rec_read_check_and_lock( + 0, btr_pcur_get_block(prebuilt->clust_pcur), + clust_rec, clust_index, *offsets, + prebuilt->select_lock_type, LOCK_REC_NOT_GAP, thr); + if (err != DB_SUCCESS) { + + goto err_exit; + } + } else { + /* This is a non-locking consistent read: if necessary, fetch + a previous version of the record */ + + old_vers = NULL; + + /* If the isolation level allows reading of uncommitted data, + then we never look for an earlier version */ + + if (trx->isolation_level > TRX_ISO_READ_UNCOMMITTED + && !lock_clust_rec_cons_read_sees( + clust_rec, clust_index, *offsets, + trx->read_view)) { + + /* The following call returns 'offsets' associated with + 'old_vers' */ + err = row_sel_build_prev_vers_for_mysql( + trx->read_view, clust_index, prebuilt, + clust_rec, offsets, offset_heap, &old_vers, + mtr); + + if (err != DB_SUCCESS || old_vers == NULL) { + + goto err_exit; + } + + clust_rec = old_vers; + } + + /* If we had to go to an earlier version of row or the + secondary index record is delete marked, then it may be that + the secondary index record corresponding to clust_rec + (or old_vers) is not rec; in that case we must ignore + such row because in our snapshot rec would not have existed. + Remember that from rec we cannot see directly which transaction + id corresponds to it: we have to go to the clustered index + record. A query where we want to fetch all rows where + the secondary index value is in some interval would return + a wrong result if we would not drop rows which we come to + visit through secondary index records that would not really + exist in our snapshot. */ + + if (clust_rec + && (old_vers + || rec_get_deleted_flag(rec, dict_table_is_comp( + sec_index->table))) + && !row_sel_sec_rec_is_for_clust_rec( + rec, sec_index, clust_rec, clust_index)) { + clust_rec = NULL; +#ifdef UNIV_SEARCH_DEBUG + } else { + ut_a(clust_rec == NULL + || row_sel_sec_rec_is_for_clust_rec( + rec, sec_index, clust_rec, clust_index)); +#endif + } + } + +func_exit: + *out_rec = clust_rec; + + if (prebuilt->select_lock_type == LOCK_X) { + /* We may use the cursor in update: store its position */ + + btr_pcur_store_position(prebuilt->clust_pcur, mtr); + } + + err = DB_SUCCESS; +err_exit: + return(err); +} + +/************************************************************************ +Restores cursor position after it has been stored. We have to take into +account that the record cursor was positioned on may have been deleted. +Then we may have to move the cursor one step up or down. */ +static +ibool +sel_restore_position_for_mysql( +/*===========================*/ + /* out: TRUE if we may need to + process the record the cursor is + now positioned on (i.e. we should + not go to the next record yet) */ + ibool* same_user_rec, /* out: TRUE if we were able to restore + the cursor on a user record with the + same ordering prefix in in the + B-tree index */ + ulint latch_mode, /* in: latch mode wished in + restoration */ + btr_pcur_t* pcur, /* in: cursor whose position + has been stored */ + ibool moves_up, /* in: TRUE if the cursor moves up + in the index */ + mtr_t* mtr) /* in: mtr; CAUTION: may commit + mtr temporarily! */ +{ + ibool success; + ulint relative_position; + + relative_position = pcur->rel_pos; + + success = btr_pcur_restore_position(latch_mode, pcur, mtr); + + *same_user_rec = success; + + if (relative_position == BTR_PCUR_ON) { + if (success) { + return(FALSE); + } + + if (moves_up) { + btr_pcur_move_to_next(pcur, mtr); + } + + return(TRUE); + } + + if (relative_position == BTR_PCUR_AFTER + || relative_position == BTR_PCUR_AFTER_LAST_IN_TREE) { + + if (moves_up) { + return(TRUE); + } + + if (btr_pcur_is_on_user_rec(pcur)) { + btr_pcur_move_to_prev(pcur, mtr); + } + + return(TRUE); + } + + ut_ad(relative_position == BTR_PCUR_BEFORE + || relative_position == BTR_PCUR_BEFORE_FIRST_IN_TREE); + + if (moves_up && btr_pcur_is_on_user_rec(pcur)) { + btr_pcur_move_to_next(pcur, mtr); + } + + return(TRUE); +} + +/************************************************************************ +Pops a cached row for MySQL from the fetch cache. */ +UNIV_INLINE +void +row_sel_pop_cached_row_for_mysql( +/*=============================*/ + byte* buf, /* in/out: buffer where to copy the + row */ + row_prebuilt_t* prebuilt) /* in: prebuilt struct */ +{ + ulint i; + mysql_row_templ_t* templ; + byte* cached_rec; + ut_ad(prebuilt->n_fetch_cached > 0); + ut_ad(prebuilt->mysql_prefix_len <= prebuilt->mysql_row_len); + + if (UNIV_UNLIKELY(prebuilt->keep_other_fields_on_keyread)) { + /* Copy cache record field by field, don't touch fields that + are not covered by current key */ + cached_rec = prebuilt->fetch_cache[ + prebuilt->fetch_cache_first]; + + for (i = 0; i < prebuilt->n_template; i++) { + templ = prebuilt->mysql_template + i; + ut_memcpy(buf + templ->mysql_col_offset, + cached_rec + templ->mysql_col_offset, + templ->mysql_col_len); + /* Copy NULL bit of the current field from cached_rec + to buf */ + if (templ->mysql_null_bit_mask) { + buf[templ->mysql_null_byte_offset] + ^= (buf[templ->mysql_null_byte_offset] + ^ cached_rec[templ->mysql_null_byte_offset]) + & (byte)templ->mysql_null_bit_mask; + } + } + } + else { + ut_memcpy(buf, + prebuilt->fetch_cache[prebuilt->fetch_cache_first], + prebuilt->mysql_prefix_len); + } + prebuilt->n_fetch_cached--; + prebuilt->fetch_cache_first++; + + if (prebuilt->n_fetch_cached == 0) { + prebuilt->fetch_cache_first = 0; + } +} + +/************************************************************************ +Pushes a row for MySQL to the fetch cache. */ +UNIV_INLINE +void +row_sel_push_cache_row_for_mysql( +/*=============================*/ + row_prebuilt_t* prebuilt, /* in: prebuilt struct */ + const rec_t* rec, /* in: record to push; must + be protected by a page latch */ + const ulint* offsets) /* in: rec_get_offsets() */ +{ + byte* buf; + ulint i; + + ut_ad(prebuilt->n_fetch_cached < MYSQL_FETCH_CACHE_SIZE); + ut_ad(rec_offs_validate(rec, NULL, offsets)); + ut_a(!prebuilt->templ_contains_blob); + + if (prebuilt->fetch_cache[0] == NULL) { + /* Allocate memory for the fetch cache */ + + for (i = 0; i < MYSQL_FETCH_CACHE_SIZE; i++) { + + /* A user has reported memory corruption in these + buffers in Linux. Put magic numbers there to help + to track a possible bug. */ + + buf = mem_alloc(prebuilt->mysql_row_len + 8); + + prebuilt->fetch_cache[i] = buf + 4; + + mach_write_to_4(buf, ROW_PREBUILT_FETCH_MAGIC_N); + mach_write_to_4(buf + 4 + prebuilt->mysql_row_len, + ROW_PREBUILT_FETCH_MAGIC_N); + } + } + + ut_ad(prebuilt->fetch_cache_first == 0); + + if (UNIV_UNLIKELY(!row_sel_store_mysql_rec( + prebuilt->fetch_cache[ + prebuilt->n_fetch_cached], + prebuilt, rec, offsets))) { + ut_error; + } + + prebuilt->n_fetch_cached++; +} + +/************************************************************************* +Tries to do a shortcut to fetch a clustered index record with a unique key, +using the hash index if possible (not always). We assume that the search +mode is PAGE_CUR_GE, it is a consistent read, there is a read view in trx, +btr search latch has been locked in S-mode. */ +static +ulint +row_sel_try_search_shortcut_for_mysql( +/*==================================*/ + /* out: SEL_FOUND, SEL_EXHAUSTED, SEL_RETRY */ + const rec_t** out_rec,/* out: record if found */ + row_prebuilt_t* prebuilt,/* in: prebuilt struct */ + ulint** offsets,/* in/out: for rec_get_offsets(*out_rec) */ + mem_heap_t** heap, /* in/out: heap for rec_get_offsets() */ + mtr_t* mtr) /* in: started mtr */ +{ + dict_index_t* index = prebuilt->index; + const dtuple_t* search_tuple = prebuilt->search_tuple; + btr_pcur_t* pcur = prebuilt->pcur; + trx_t* trx = prebuilt->trx; + const rec_t* rec; + + ut_ad(dict_index_is_clust(index)); + ut_ad(!prebuilt->templ_contains_blob); + + btr_pcur_open_with_no_init(index, search_tuple, PAGE_CUR_GE, + BTR_SEARCH_LEAF, pcur, +#ifndef UNIV_SEARCH_DEBUG + RW_S_LATCH, +#else + 0, +#endif + mtr); + rec = btr_pcur_get_rec(pcur); + + if (!page_rec_is_user_rec(rec)) { + + return(SEL_RETRY); + } + + /* As the cursor is now placed on a user record after a search with + the mode PAGE_CUR_GE, the up_match field in the cursor tells how many + fields in the user record matched to the search tuple */ + + if (btr_pcur_get_up_match(pcur) < dtuple_get_n_fields(search_tuple)) { + + return(SEL_EXHAUSTED); + } + + /* This is a non-locking consistent read: if necessary, fetch + a previous version of the record */ + + *offsets = rec_get_offsets(rec, index, *offsets, + ULINT_UNDEFINED, heap); + + if (!lock_clust_rec_cons_read_sees(rec, index, + *offsets, trx->read_view)) { + + return(SEL_RETRY); + } + + if (rec_get_deleted_flag(rec, dict_table_is_comp(index->table))) { + + return(SEL_EXHAUSTED); + } + + *out_rec = rec; + + return(SEL_FOUND); +} + +/************************************************************************ +Searches for rows in the database. This is used in the interface to +MySQL. This function opens a cursor, and also implements fetch next +and fetch prev. NOTE that if we do a search with a full key value +from a unique index (ROW_SEL_EXACT), then we will not store the cursor +position and fetch next or fetch prev must not be tried to the cursor! */ +UNIV_INTERN +ulint +row_search_for_mysql( +/*=================*/ + /* out: DB_SUCCESS, + DB_RECORD_NOT_FOUND, + DB_END_OF_INDEX, DB_DEADLOCK, + DB_LOCK_TABLE_FULL, DB_CORRUPTION, + or DB_TOO_BIG_RECORD */ + byte* buf, /* in/out: buffer for the fetched + row in the MySQL format */ + ulint mode, /* in: search mode PAGE_CUR_L, ... */ + row_prebuilt_t* prebuilt, /* in: prebuilt struct for the + table handle; this contains the info + of search_tuple, index; if search + tuple contains 0 fields then we + position the cursor at the start or + the end of the index, depending on + 'mode' */ + ulint match_mode, /* in: 0 or ROW_SEL_EXACT or + ROW_SEL_EXACT_PREFIX */ + ulint direction) /* in: 0 or ROW_SEL_NEXT or + ROW_SEL_PREV; NOTE: if this is != 0, + then prebuilt must have a pcur + with stored position! In opening of a + cursor 'direction' should be 0. */ +{ + dict_index_t* index = prebuilt->index; + ibool comp = dict_table_is_comp(index->table); + const dtuple_t* search_tuple = prebuilt->search_tuple; + btr_pcur_t* pcur = prebuilt->pcur; + trx_t* trx = prebuilt->trx; + dict_index_t* clust_index; + que_thr_t* thr; + const rec_t* rec; + const rec_t* result_rec; + const rec_t* clust_rec; + ulint err = DB_SUCCESS; + ibool unique_search = FALSE; + ibool unique_search_from_clust_index = FALSE; + ibool mtr_has_extra_clust_latch = FALSE; + ibool moves_up = FALSE; + ibool set_also_gap_locks = TRUE; + /* if the query is a plain locking SELECT, and the isolation level + is <= TRX_ISO_READ_COMMITTED, then this is set to FALSE */ + ibool did_semi_consistent_read = FALSE; + /* if the returned record was locked and we did a semi-consistent + read (fetch the newest committed version), then this is set to + TRUE */ +#ifdef UNIV_SEARCH_DEBUG + ulint cnt = 0; +#endif /* UNIV_SEARCH_DEBUG */ + ulint next_offs; + ibool same_user_rec; + mtr_t mtr; + mem_heap_t* heap = NULL; + ulint offsets_[REC_OFFS_NORMAL_SIZE]; + ulint* offsets = offsets_; + + rec_offs_init(offsets_); + + ut_ad(index && pcur && search_tuple); + ut_ad(trx->mysql_thread_id == os_thread_get_curr_id()); + + if (UNIV_UNLIKELY(prebuilt->table->ibd_file_missing)) { + ut_print_timestamp(stderr); + fprintf(stderr, " InnoDB: Error:\n" + "InnoDB: MySQL is trying to use a table handle" + " but the .ibd file for\n" + "InnoDB: table %s does not exist.\n" + "InnoDB: Have you deleted the .ibd file" + " from the database directory under\n" + "InnoDB: the MySQL datadir, or have you used" + " DISCARD TABLESPACE?\n" + "InnoDB: Look from\n" + "InnoDB: http://dev.mysql.com/doc/refman/5.1/en/" + "innodb-troubleshooting.html\n" + "InnoDB: how you can resolve the problem.\n", + prebuilt->table->name); + + return(DB_ERROR); + } + + if (UNIV_UNLIKELY(prebuilt->magic_n != ROW_PREBUILT_ALLOCATED)) { + fprintf(stderr, + "InnoDB: Error: trying to free a corrupt\n" + "InnoDB: table handle. Magic n %lu, table name ", + (ulong) prebuilt->magic_n); + ut_print_name(stderr, trx, TRUE, prebuilt->table->name); + putc('\n', stderr); + + mem_analyze_corruption(prebuilt); + + ut_error; + } + +#if 0 + /* August 19, 2005 by Heikki: temporarily disable this error + print until the cursor lock count is done correctly. + See bugs #12263 and #12456!*/ + + if (trx->n_mysql_tables_in_use == 0 + && UNIV_UNLIKELY(prebuilt->select_lock_type == LOCK_NONE)) { + /* Note that if MySQL uses an InnoDB temp table that it + created inside LOCK TABLES, then n_mysql_tables_in_use can + be zero; in that case select_lock_type is set to LOCK_X in + ::start_stmt. */ + + fputs("InnoDB: Error: MySQL is trying to perform a SELECT\n" + "InnoDB: but it has not locked" + " any tables in ::external_lock()!\n", + stderr); + trx_print(stderr, trx, 600); + fputc('\n', stderr); + } +#endif + +#if 0 + fprintf(stderr, "Match mode %lu\n search tuple ", + (ulong) match_mode); + dtuple_print(search_tuple); + fprintf(stderr, "N tables locked %lu\n", + (ulong) trx->mysql_n_tables_locked); +#endif + /*-------------------------------------------------------------*/ + /* PHASE 0: Release a possible s-latch we are holding on the + adaptive hash index latch if there is someone waiting behind */ + + if (UNIV_UNLIKELY(rw_lock_get_writer(&btr_search_latch) != RW_LOCK_NOT_LOCKED) + && trx->has_search_latch) { + + /* There is an x-latch request on the adaptive hash index: + release the s-latch to reduce starvation and wait for + BTR_SEA_TIMEOUT rounds before trying to keep it again over + calls from MySQL */ + + rw_lock_s_unlock(&btr_search_latch); + trx->has_search_latch = FALSE; + + trx->search_latch_timeout = BTR_SEA_TIMEOUT; + } + + /* Reset the new record lock info if srv_locks_unsafe_for_binlog + is set or session is using a READ COMMITED isolation level. Then + we are able to remove the record locks set here on an individual + row. */ + + if ((srv_locks_unsafe_for_binlog + || trx->isolation_level == TRX_ISO_READ_COMMITTED) + && prebuilt->select_lock_type != LOCK_NONE) { + + trx_reset_new_rec_lock_info(trx); + } + + /*-------------------------------------------------------------*/ + /* PHASE 1: Try to pop the row from the prefetch cache */ + + if (UNIV_UNLIKELY(direction == 0)) { + trx->op_info = "starting index read"; + + prebuilt->n_rows_fetched = 0; + prebuilt->n_fetch_cached = 0; + prebuilt->fetch_cache_first = 0; + + if (prebuilt->sel_graph == NULL) { + /* Build a dummy select query graph */ + row_prebuild_sel_graph(prebuilt); + } + } else { + trx->op_info = "fetching rows"; + + if (prebuilt->n_rows_fetched == 0) { + prebuilt->fetch_direction = direction; + } + + if (UNIV_UNLIKELY(direction != prebuilt->fetch_direction)) { + if (UNIV_UNLIKELY(prebuilt->n_fetch_cached > 0)) { + ut_error; + /* TODO: scrollable cursor: restore cursor to + the place of the latest returned row, + or better: prevent caching for a scroll + cursor! */ + } + + prebuilt->n_rows_fetched = 0; + prebuilt->n_fetch_cached = 0; + prebuilt->fetch_cache_first = 0; + + } else if (UNIV_LIKELY(prebuilt->n_fetch_cached > 0)) { + row_sel_pop_cached_row_for_mysql(buf, prebuilt); + + prebuilt->n_rows_fetched++; + + srv_n_rows_read++; + err = DB_SUCCESS; + goto func_exit; + } + + if (prebuilt->fetch_cache_first > 0 + && prebuilt->fetch_cache_first < MYSQL_FETCH_CACHE_SIZE) { + + /* The previous returned row was popped from the fetch + cache, but the cache was not full at the time of the + popping: no more rows can exist in the result set */ + + err = DB_RECORD_NOT_FOUND; + goto func_exit; + } + + prebuilt->n_rows_fetched++; + + if (prebuilt->n_rows_fetched > 1000000000) { + /* Prevent wrap-over */ + prebuilt->n_rows_fetched = 500000000; + } + + mode = pcur->search_mode; + } + + /* In a search where at most one record in the index may match, we + can use a LOCK_REC_NOT_GAP type record lock when locking a + non-delete-marked matching record. + + Note that in a unique secondary index there may be different + delete-marked versions of a record where only the primary key + values differ: thus in a secondary index we must use next-key + locks when locking delete-marked records. */ + + if (match_mode == ROW_SEL_EXACT + && dict_index_is_unique(index) + && dtuple_get_n_fields(search_tuple) + == dict_index_get_n_unique(index) + && (dict_index_is_clust(index) + || !dtuple_contains_null(search_tuple))) { + + /* Note above that a UNIQUE secondary index can contain many + rows with the same key value if one of the columns is the SQL + null. A clustered index under MySQL can never contain null + columns because we demand that all the columns in primary key + are non-null. */ + + unique_search = TRUE; + + /* Even if the condition is unique, MySQL seems to try to + retrieve also a second row if a primary key contains more than + 1 column. Return immediately if this is not a HANDLER + command. */ + + if (UNIV_UNLIKELY(direction != 0 + && !prebuilt->used_in_HANDLER)) { + + err = DB_RECORD_NOT_FOUND; + goto func_exit; + } + } + + mtr_start(&mtr); + + /*-------------------------------------------------------------*/ + /* PHASE 2: Try fast adaptive hash index search if possible */ + + /* Next test if this is the special case where we can use the fast + adaptive hash index to try the search. Since we must release the + search system latch when we retrieve an externally stored field, we + cannot use the adaptive hash index in a search in the case the row + may be long and there may be externally stored fields */ + + if (UNIV_UNLIKELY(direction == 0) + && unique_search + && dict_index_is_clust(index) + && !prebuilt->templ_contains_blob + && !prebuilt->used_in_HANDLER + && (prebuilt->mysql_row_len < UNIV_PAGE_SIZE / 8)) { + + mode = PAGE_CUR_GE; + + unique_search_from_clust_index = TRUE; + + if (trx->mysql_n_tables_locked == 0 + && prebuilt->select_lock_type == LOCK_NONE + && trx->isolation_level > TRX_ISO_READ_UNCOMMITTED + && trx->read_view) { + + /* This is a SELECT query done as a consistent read, + and the read view has already been allocated: + let us try a search shortcut through the hash + index. + NOTE that we must also test that + mysql_n_tables_locked == 0, because this might + also be INSERT INTO ... SELECT ... or + CREATE TABLE ... SELECT ... . Our algorithm is + NOT prepared to inserts interleaved with the SELECT, + and if we try that, we can deadlock on the adaptive + hash index semaphore! */ + +#ifndef UNIV_SEARCH_DEBUG + if (!trx->has_search_latch) { + rw_lock_s_lock(&btr_search_latch); + trx->has_search_latch = TRUE; + } +#endif + switch (row_sel_try_search_shortcut_for_mysql( + &rec, prebuilt, &offsets, &heap, + &mtr)) { + case SEL_FOUND: +#ifdef UNIV_SEARCH_DEBUG + ut_a(0 == cmp_dtuple_rec(search_tuple, + rec, offsets)); +#endif + /* At this point, rec is protected by + a page latch that was acquired by + row_sel_try_search_shortcut_for_mysql(). + The latch will not be released until + mtr_commit(&mtr). */ + + if (!row_sel_store_mysql_rec(buf, prebuilt, + rec, offsets)) { + err = DB_TOO_BIG_RECORD; + + /* We let the main loop to do the + error handling */ + goto shortcut_fails_too_big_rec; + } + + mtr_commit(&mtr); + + /* ut_print_name(stderr, index->name); + fputs(" shortcut\n", stderr); */ + + srv_n_rows_read++; + + err = DB_SUCCESS; + goto release_search_latch_if_needed; + + case SEL_EXHAUSTED: + mtr_commit(&mtr); + + /* ut_print_name(stderr, index->name); + fputs(" record not found 2\n", stderr); */ + + err = DB_RECORD_NOT_FOUND; +release_search_latch_if_needed: + if (trx->search_latch_timeout > 0 + && trx->has_search_latch) { + + trx->search_latch_timeout--; + + rw_lock_s_unlock(&btr_search_latch); + trx->has_search_latch = FALSE; + } + + /* NOTE that we do NOT store the cursor + position */ + goto func_exit; + + case SEL_RETRY: + break; + + default: + ut_ad(0); + } +shortcut_fails_too_big_rec: + mtr_commit(&mtr); + mtr_start(&mtr); + } + } + + /*-------------------------------------------------------------*/ + /* PHASE 3: Open or restore index cursor position */ + + if (trx->has_search_latch) { + rw_lock_s_unlock(&btr_search_latch); + trx->has_search_latch = FALSE; + } + + trx_start_if_not_started(trx); + + if (trx->isolation_level <= TRX_ISO_READ_COMMITTED + && prebuilt->select_lock_type != LOCK_NONE + && trx->mysql_thd != NULL + && thd_is_select(trx->mysql_thd)) { + /* It is a plain locking SELECT and the isolation + level is low: do not lock gaps */ + + set_also_gap_locks = FALSE; + } + + /* Note that if the search mode was GE or G, then the cursor + naturally moves upward (in fetch next) in alphabetical order, + otherwise downward */ + + if (UNIV_UNLIKELY(direction == 0)) { + if (mode == PAGE_CUR_GE || mode == PAGE_CUR_G) { + moves_up = TRUE; + } + } else if (direction == ROW_SEL_NEXT) { + moves_up = TRUE; + } + + thr = que_fork_get_first_thr(prebuilt->sel_graph); + + que_thr_move_to_run_state_for_mysql(thr, trx); + + clust_index = dict_table_get_first_index(index->table); + + if (UNIV_LIKELY(direction != 0)) { + ibool need_to_process = sel_restore_position_for_mysql( + &same_user_rec, BTR_SEARCH_LEAF, + pcur, moves_up, &mtr); + + if (UNIV_UNLIKELY(need_to_process)) { + if (UNIV_UNLIKELY(prebuilt->row_read_type + == ROW_READ_DID_SEMI_CONSISTENT)) { + /* We did a semi-consistent read, + but the record was removed in + the meantime. */ + prebuilt->row_read_type + = ROW_READ_TRY_SEMI_CONSISTENT; + } + } else if (UNIV_LIKELY(prebuilt->row_read_type + != ROW_READ_DID_SEMI_CONSISTENT)) { + + /* The cursor was positioned on the record + that we returned previously. If we need + to repeat a semi-consistent read as a + pessimistic locking read, the record + cannot be skipped. */ + + goto next_rec; + } + + } else if (dtuple_get_n_fields(search_tuple) > 0) { + + btr_pcur_open_with_no_init(index, search_tuple, mode, + BTR_SEARCH_LEAF, + pcur, 0, &mtr); + + pcur->trx_if_known = trx; + + rec = btr_pcur_get_rec(pcur); + + if (!moves_up + && !page_rec_is_supremum(rec) + && set_also_gap_locks + && !(srv_locks_unsafe_for_binlog + || trx->isolation_level == TRX_ISO_READ_COMMITTED) + && prebuilt->select_lock_type != LOCK_NONE) { + + /* Try to place a gap lock on the next index record + to prevent phantoms in ORDER BY ... DESC queries */ + const rec_t* next = page_rec_get_next_const(rec); + + offsets = rec_get_offsets(next, index, offsets, + ULINT_UNDEFINED, &heap); + err = sel_set_rec_lock(btr_pcur_get_block(pcur), + next, index, offsets, + prebuilt->select_lock_type, + LOCK_GAP, thr); + + if (err != DB_SUCCESS) { + + goto lock_wait_or_error; + } + } + } else { + if (mode == PAGE_CUR_G) { + btr_pcur_open_at_index_side( + TRUE, index, BTR_SEARCH_LEAF, pcur, FALSE, + &mtr); + } else if (mode == PAGE_CUR_L) { + btr_pcur_open_at_index_side( + FALSE, index, BTR_SEARCH_LEAF, pcur, FALSE, + &mtr); + } + } + + if (!prebuilt->sql_stat_start) { + /* No need to set an intention lock or assign a read view */ + + if (trx->read_view == NULL + && prebuilt->select_lock_type == LOCK_NONE) { + + fputs("InnoDB: Error: MySQL is trying to" + " perform a consistent read\n" + "InnoDB: but the read view is not assigned!\n", + stderr); + trx_print(stderr, trx, 600); + fputc('\n', stderr); + ut_a(0); + } + } else if (prebuilt->select_lock_type == LOCK_NONE) { + /* This is a consistent read */ + /* Assign a read view for the query */ + + trx_assign_read_view(trx); + prebuilt->sql_stat_start = FALSE; + } else { + ulint lock_mode; + if (prebuilt->select_lock_type == LOCK_S) { + lock_mode = LOCK_IS; + } else { + lock_mode = LOCK_IX; + } + err = lock_table(0, index->table, lock_mode, thr); + + if (err != DB_SUCCESS) { + + goto lock_wait_or_error; + } + prebuilt->sql_stat_start = FALSE; + } + +rec_loop: + /*-------------------------------------------------------------*/ + /* PHASE 4: Look for matching records in a loop */ + + rec = btr_pcur_get_rec(pcur); + ut_ad(!!page_rec_is_comp(rec) == comp); +#ifdef UNIV_SEARCH_DEBUG + /* + fputs("Using ", stderr); + dict_index_name_print(stderr, index); + fprintf(stderr, " cnt %lu ; Page no %lu\n", cnt, + page_get_page_no(page_align(rec))); + rec_print(rec); + */ +#endif /* UNIV_SEARCH_DEBUG */ + + if (page_rec_is_infimum(rec)) { + + /* The infimum record on a page cannot be in the result set, + and neither can a record lock be placed on it: we skip such + a record. */ + + goto next_rec; + } + + if (page_rec_is_supremum(rec)) { + + if (set_also_gap_locks + && !(srv_locks_unsafe_for_binlog + || trx->isolation_level == TRX_ISO_READ_COMMITTED) + && prebuilt->select_lock_type != LOCK_NONE) { + + /* Try to place a lock on the index record */ + + /* If innodb_locks_unsafe_for_binlog option is used + or this session is using a READ COMMITTED isolation + level we do not lock gaps. Supremum record is really + a gap and therefore we do not set locks there. */ + + offsets = rec_get_offsets(rec, index, offsets, + ULINT_UNDEFINED, &heap); + err = sel_set_rec_lock(btr_pcur_get_block(pcur), + rec, index, offsets, + prebuilt->select_lock_type, + LOCK_ORDINARY, thr); + + if (err != DB_SUCCESS) { + + goto lock_wait_or_error; + } + } + /* A page supremum record cannot be in the result set: skip + it now that we have placed a possible lock on it */ + + goto next_rec; + } + + /*-------------------------------------------------------------*/ + /* Do sanity checks in case our cursor has bumped into page + corruption */ + + if (comp) { + next_offs = rec_get_next_offs(rec, TRUE); + if (UNIV_UNLIKELY(next_offs < PAGE_NEW_SUPREMUM)) { + + goto wrong_offs; + } + } else { + next_offs = rec_get_next_offs(rec, FALSE); + if (UNIV_UNLIKELY(next_offs < PAGE_OLD_SUPREMUM)) { + + goto wrong_offs; + } + } + + if (UNIV_UNLIKELY(next_offs >= UNIV_PAGE_SIZE - PAGE_DIR)) { + +wrong_offs: + if (srv_force_recovery == 0 || moves_up == FALSE) { + ut_print_timestamp(stderr); + buf_page_print(page_align(rec), 0); + fprintf(stderr, + "\nInnoDB: rec address %p," + " buf block fix count %lu\n", + (void*) rec, (ulong) + btr_cur_get_block(btr_pcur_get_btr_cur(pcur)) + ->page.buf_fix_count); + fprintf(stderr, + "InnoDB: Index corruption: rec offs %lu" + " next offs %lu, page no %lu,\n" + "InnoDB: ", + (ulong) page_offset(rec), + (ulong) next_offs, + (ulong) page_get_page_no(page_align(rec))); + dict_index_name_print(stderr, trx, index); + fputs(". Run CHECK TABLE. You may need to\n" + "InnoDB: restore from a backup, or" + " dump + drop + reimport the table.\n", + stderr); + + err = DB_CORRUPTION; + + goto lock_wait_or_error; + } else { + /* The user may be dumping a corrupt table. Jump + over the corruption to recover as much as possible. */ + + fprintf(stderr, + "InnoDB: Index corruption: rec offs %lu" + " next offs %lu, page no %lu,\n" + "InnoDB: ", + (ulong) page_offset(rec), + (ulong) next_offs, + (ulong) page_get_page_no(page_align(rec))); + dict_index_name_print(stderr, trx, index); + fputs(". We try to skip the rest of the page.\n", + stderr); + + btr_pcur_move_to_last_on_page(pcur, &mtr); + + goto next_rec; + } + } + /*-------------------------------------------------------------*/ + + /* Calculate the 'offsets' associated with 'rec' */ + + offsets = rec_get_offsets(rec, index, offsets, ULINT_UNDEFINED, &heap); + + if (UNIV_UNLIKELY(srv_force_recovery > 0)) { + if (!rec_validate(rec, offsets) + || !btr_index_rec_validate(rec, index, FALSE)) { + fprintf(stderr, + "InnoDB: Index corruption: rec offs %lu" + " next offs %lu, page no %lu,\n" + "InnoDB: ", + (ulong) page_offset(rec), + (ulong) next_offs, + (ulong) page_get_page_no(page_align(rec))); + dict_index_name_print(stderr, trx, index); + fputs(". We try to skip the record.\n", + stderr); + + goto next_rec; + } + } + + /* Note that we cannot trust the up_match value in the cursor at this + place because we can arrive here after moving the cursor! Thus + we have to recompare rec and search_tuple to determine if they + match enough. */ + + if (match_mode == ROW_SEL_EXACT) { + /* Test if the index record matches completely to search_tuple + in prebuilt: if not, then we return with DB_RECORD_NOT_FOUND */ + + /* fputs("Comparing rec and search tuple\n", stderr); */ + + if (0 != cmp_dtuple_rec(search_tuple, rec, offsets)) { + + if (set_also_gap_locks + && !(srv_locks_unsafe_for_binlog + || trx->isolation_level + == TRX_ISO_READ_COMMITTED) + && prebuilt->select_lock_type != LOCK_NONE) { + + /* Try to place a gap lock on the index + record only if innodb_locks_unsafe_for_binlog + option is not set or this session is not + using a READ COMMITTED isolation level. */ + + err = sel_set_rec_lock( + btr_pcur_get_block(pcur), + rec, index, offsets, + prebuilt->select_lock_type, LOCK_GAP, + thr); + + if (err != DB_SUCCESS) { + + goto lock_wait_or_error; + } + } + + btr_pcur_store_position(pcur, &mtr); + + err = DB_RECORD_NOT_FOUND; + /* ut_print_name(stderr, index->name); + fputs(" record not found 3\n", stderr); */ + + goto normal_return; + } + + } else if (match_mode == ROW_SEL_EXACT_PREFIX) { + + if (!cmp_dtuple_is_prefix_of_rec(search_tuple, rec, offsets)) { + + if (set_also_gap_locks + && !(srv_locks_unsafe_for_binlog + || trx->isolation_level + == TRX_ISO_READ_COMMITTED) + && prebuilt->select_lock_type != LOCK_NONE) { + + /* Try to place a gap lock on the index + record only if innodb_locks_unsafe_for_binlog + option is not set or this session is not + using a READ COMMITTED isolation level. */ + + err = sel_set_rec_lock( + btr_pcur_get_block(pcur), + rec, index, offsets, + prebuilt->select_lock_type, LOCK_GAP, + thr); + + if (err != DB_SUCCESS) { + + goto lock_wait_or_error; + } + } + + btr_pcur_store_position(pcur, &mtr); + + err = DB_RECORD_NOT_FOUND; + /* ut_print_name(stderr, index->name); + fputs(" record not found 4\n", stderr); */ + + goto normal_return; + } + } + + /* We are ready to look at a possible new index entry in the result + set: the cursor is now placed on a user record */ + + if (prebuilt->select_lock_type != LOCK_NONE) { + /* Try to place a lock on the index record; note that delete + marked records are a special case in a unique search. If there + is a non-delete marked record, then it is enough to lock its + existence with LOCK_REC_NOT_GAP. */ + + /* If innodb_locks_unsafe_for_binlog option is used + or this session is using a READ COMMITED isolation + level we lock only the record, i.e., next-key locking is + not used. */ + + ulint lock_type; + + if (!set_also_gap_locks + || srv_locks_unsafe_for_binlog + || trx->isolation_level == TRX_ISO_READ_COMMITTED + || (unique_search + && !UNIV_UNLIKELY(rec_get_deleted_flag(rec, comp)))) { + + goto no_gap_lock; + } else { + lock_type = LOCK_ORDINARY; + } + + /* If we are doing a 'greater or equal than a primary key + value' search from a clustered index, and we find a record + that has that exact primary key value, then there is no need + to lock the gap before the record, because no insert in the + gap can be in our search range. That is, no phantom row can + appear that way. + + An example: if col1 is the primary key, the search is WHERE + col1 >= 100, and we find a record where col1 = 100, then no + need to lock the gap before that record. */ + + if (index == clust_index + && mode == PAGE_CUR_GE + && direction == 0 + && dtuple_get_n_fields_cmp(search_tuple) + == dict_index_get_n_unique(index) + && 0 == cmp_dtuple_rec(search_tuple, rec, offsets)) { +no_gap_lock: + lock_type = LOCK_REC_NOT_GAP; + } + + err = sel_set_rec_lock(btr_pcur_get_block(pcur), + rec, index, offsets, + prebuilt->select_lock_type, + lock_type, thr); + + switch (err) { + const rec_t* old_vers; + case DB_SUCCESS: + break; + case DB_LOCK_WAIT: + if (UNIV_LIKELY(prebuilt->row_read_type + != ROW_READ_TRY_SEMI_CONSISTENT) + || index != clust_index) { + + goto lock_wait_or_error; + } + + /* The following call returns 'offsets' + associated with 'old_vers' */ + err = row_sel_build_committed_vers_for_mysql( + clust_index, prebuilt, rec, + &offsets, &heap, &old_vers, &mtr); + + if (err != DB_SUCCESS) { + + goto lock_wait_or_error; + } + + mutex_enter(&kernel_mutex); + if (trx->was_chosen_as_deadlock_victim) { + mutex_exit(&kernel_mutex); + err = DB_DEADLOCK; + + goto lock_wait_or_error; + } + if (UNIV_LIKELY(trx->wait_lock != NULL)) { + lock_cancel_waiting_and_release( + trx->wait_lock); + trx_reset_new_rec_lock_info(trx); + } else { + mutex_exit(&kernel_mutex); + + /* The lock was granted while we were + searching for the last committed version. + Do a normal locking read. */ + + offsets = rec_get_offsets(rec, index, offsets, + ULINT_UNDEFINED, + &heap); + err = DB_SUCCESS; + break; + } + mutex_exit(&kernel_mutex); + + if (old_vers == NULL) { + /* The row was not yet committed */ + + goto next_rec; + } + + did_semi_consistent_read = TRUE; + rec = old_vers; + break; + default: + + goto lock_wait_or_error; + } + } else { + /* This is a non-locking consistent read: if necessary, fetch + a previous version of the record */ + + if (trx->isolation_level == TRX_ISO_READ_UNCOMMITTED) { + + /* Do nothing: we let a non-locking SELECT read the + latest version of the record */ + + } else if (index == clust_index) { + + /* Fetch a previous version of the row if the current + one is not visible in the snapshot; if we have a very + high force recovery level set, we try to avoid crashes + by skipping this lookup */ + + if (UNIV_LIKELY(srv_force_recovery < 5) + && !lock_clust_rec_cons_read_sees( + rec, index, offsets, trx->read_view)) { + + rec_t* old_vers; + /* The following call returns 'offsets' + associated with 'old_vers' */ + err = row_sel_build_prev_vers_for_mysql( + trx->read_view, clust_index, + prebuilt, rec, &offsets, &heap, + &old_vers, &mtr); + + if (err != DB_SUCCESS) { + + goto lock_wait_or_error; + } + + if (old_vers == NULL) { + /* The row did not exist yet in + the read view */ + + goto next_rec; + } + + rec = old_vers; + } + } else if (!lock_sec_rec_cons_read_sees(rec, trx->read_view)) { + /* We are looking into a non-clustered index, + and to get the right version of the record we + have to look also into the clustered index: this + is necessary, because we can only get the undo + information via the clustered index record. */ + + ut_ad(index != clust_index); + + goto requires_clust_rec; + } + } + + /* NOTE that at this point rec can be an old version of a clustered + index record built for a consistent read. We cannot assume after this + point that rec is on a buffer pool page. Functions like + page_rec_is_comp() cannot be used! */ + + if (UNIV_UNLIKELY(rec_get_deleted_flag(rec, comp))) { + + /* The record is delete-marked: we can skip it */ + + if ((srv_locks_unsafe_for_binlog + || trx->isolation_level == TRX_ISO_READ_COMMITTED) + && prebuilt->select_lock_type != LOCK_NONE + && !did_semi_consistent_read) { + + /* No need to keep a lock on a delete-marked record + if we do not want to use next-key locking. */ + + row_unlock_for_mysql(prebuilt, TRUE); + } + + /* This is an optimization to skip setting the next key lock + on the record that follows this delete-marked record. This + optimization works because of the unique search criteria + which precludes the presence of a range lock between this + delete marked record and the record following it. + + For now this is applicable only to clustered indexes while + doing a unique search. There is scope for further optimization + applicable to unique secondary indexes. Current behaviour is + to widen the scope of a lock on an already delete marked record + if the same record is deleted twice by the same transaction */ + if (index == clust_index && unique_search) { + err = DB_RECORD_NOT_FOUND; + + goto normal_return; + } + + goto next_rec; + } + + /* Get the clustered index record if needed, if we did not do the + search using the clustered index. */ + + if (index != clust_index && prebuilt->need_to_access_clustered) { + +requires_clust_rec: + /* We use a 'goto' to the preceding label if a consistent + read of a secondary index record requires us to look up old + versions of the associated clustered index record. */ + + ut_ad(rec_offs_validate(rec, index, offsets)); + + /* It was a non-clustered index and we must fetch also the + clustered index record */ + + mtr_has_extra_clust_latch = TRUE; + + /* The following call returns 'offsets' associated with + 'clust_rec'. Note that 'clust_rec' can be an old version + built for a consistent read. */ + + err = row_sel_get_clust_rec_for_mysql(prebuilt, index, rec, + thr, &clust_rec, + &offsets, &heap, &mtr); + if (err != DB_SUCCESS) { + + goto lock_wait_or_error; + } + + if (clust_rec == NULL) { + /* The record did not exist in the read view */ + ut_ad(prebuilt->select_lock_type == LOCK_NONE); + + goto next_rec; + } + + if (UNIV_UNLIKELY(rec_get_deleted_flag(clust_rec, comp))) { + + /* The record is delete marked: we can skip it */ + + if ((srv_locks_unsafe_for_binlog + || trx->isolation_level == TRX_ISO_READ_COMMITTED) + && prebuilt->select_lock_type != LOCK_NONE) { + + /* No need to keep a lock on a delete-marked + record if we do not want to use next-key + locking. */ + + row_unlock_for_mysql(prebuilt, TRUE); + } + + goto next_rec; + } + + if (prebuilt->need_to_access_clustered) { + + result_rec = clust_rec; + + ut_ad(rec_offs_validate(result_rec, clust_index, + offsets)); + } else { + /* We used 'offsets' for the clust rec, recalculate + them for 'rec' */ + offsets = rec_get_offsets(rec, index, offsets, + ULINT_UNDEFINED, &heap); + result_rec = rec; + } + } else { + result_rec = rec; + } + + /* We found a qualifying record 'result_rec'. At this point, + 'offsets' are associated with 'result_rec'. */ + + ut_ad(rec_offs_validate(result_rec, + result_rec != rec ? clust_index : index, + offsets)); + + /* At this point, the clustered index record is protected + by a page latch that was acquired when pcur was positioned. + The latch will not be released until mtr_commit(&mtr). */ + + if ((match_mode == ROW_SEL_EXACT + || prebuilt->n_rows_fetched >= MYSQL_FETCH_CACHE_THRESHOLD) + && prebuilt->select_lock_type == LOCK_NONE + && !prebuilt->templ_contains_blob + && !prebuilt->clust_index_was_generated + && !prebuilt->used_in_HANDLER + && prebuilt->template_type + != ROW_MYSQL_DUMMY_TEMPLATE) { + + /* Inside an update, for example, we do not cache rows, + since we may use the cursor position to do the actual + update, that is why we require ...lock_type == LOCK_NONE. + Since we keep space in prebuilt only for the BLOBs of + a single row, we cannot cache rows in the case there + are BLOBs in the fields to be fetched. In HANDLER we do + not cache rows because there the cursor is a scrollable + cursor. */ + + row_sel_push_cache_row_for_mysql(prebuilt, result_rec, + offsets); + if (prebuilt->n_fetch_cached == MYSQL_FETCH_CACHE_SIZE) { + + goto got_row; + } + + goto next_rec; + } else { + if (prebuilt->template_type == ROW_MYSQL_DUMMY_TEMPLATE) { + memcpy(buf + 4, result_rec + - rec_offs_extra_size(offsets), + rec_offs_size(offsets)); + mach_write_to_4(buf, + rec_offs_extra_size(offsets) + 4); + } else { + if (!row_sel_store_mysql_rec(buf, prebuilt, + result_rec, offsets)) { + err = DB_TOO_BIG_RECORD; + + goto lock_wait_or_error; + } + } + + if (prebuilt->clust_index_was_generated) { + if (result_rec != rec) { + offsets = rec_get_offsets( + rec, index, offsets, ULINT_UNDEFINED, + &heap); + } + row_sel_store_row_id_to_prebuilt(prebuilt, rec, + index, offsets); + } + } + + /* From this point on, 'offsets' are invalid. */ + +got_row: + /* We have an optimization to save CPU time: if this is a consistent + read on a unique condition on the clustered index, then we do not + store the pcur position, because any fetch next or prev will anyway + return 'end of file'. Exceptions are locking reads and the MySQL + HANDLER command where the user can move the cursor with PREV or NEXT + even after a unique search. */ + + if (!unique_search_from_clust_index + || prebuilt->select_lock_type != LOCK_NONE + || prebuilt->used_in_HANDLER) { + + /* Inside an update always store the cursor position */ + + btr_pcur_store_position(pcur, &mtr); + } + + err = DB_SUCCESS; + + goto normal_return; + +next_rec: + /* Reset the old and new "did semi-consistent read" flags. */ + if (UNIV_UNLIKELY(prebuilt->row_read_type + == ROW_READ_DID_SEMI_CONSISTENT)) { + prebuilt->row_read_type = ROW_READ_TRY_SEMI_CONSISTENT; + } + did_semi_consistent_read = FALSE; + + if (UNIV_UNLIKELY(srv_locks_unsafe_for_binlog + || trx->isolation_level == TRX_ISO_READ_COMMITTED) + && prebuilt->select_lock_type != LOCK_NONE) { + + trx_reset_new_rec_lock_info(trx); + } + + /*-------------------------------------------------------------*/ + /* PHASE 5: Move the cursor to the next index record */ + + if (UNIV_UNLIKELY(mtr_has_extra_clust_latch)) { + /* We must commit mtr if we are moving to the next + non-clustered index record, because we could break the + latching order if we would access a different clustered + index page right away without releasing the previous. */ + + btr_pcur_store_position(pcur, &mtr); + + mtr_commit(&mtr); + mtr_has_extra_clust_latch = FALSE; + + mtr_start(&mtr); + if (sel_restore_position_for_mysql(&same_user_rec, + BTR_SEARCH_LEAF, + pcur, moves_up, &mtr)) { +#ifdef UNIV_SEARCH_DEBUG + cnt++; +#endif /* UNIV_SEARCH_DEBUG */ + + goto rec_loop; + } + } + + if (moves_up) { + if (UNIV_UNLIKELY(!btr_pcur_move_to_next(pcur, &mtr))) { +not_moved: + btr_pcur_store_position(pcur, &mtr); + + if (match_mode != 0) { + err = DB_RECORD_NOT_FOUND; + } else { + err = DB_END_OF_INDEX; + } + + goto normal_return; + } + } else { + if (UNIV_UNLIKELY(!btr_pcur_move_to_prev(pcur, &mtr))) { + goto not_moved; + } + } + +#ifdef UNIV_SEARCH_DEBUG + cnt++; +#endif /* UNIV_SEARCH_DEBUG */ + + goto rec_loop; + +lock_wait_or_error: + /* Reset the old and new "did semi-consistent read" flags. */ + if (UNIV_UNLIKELY(prebuilt->row_read_type + == ROW_READ_DID_SEMI_CONSISTENT)) { + prebuilt->row_read_type = ROW_READ_TRY_SEMI_CONSISTENT; + } + did_semi_consistent_read = FALSE; + + /*-------------------------------------------------------------*/ + + btr_pcur_store_position(pcur, &mtr); + + mtr_commit(&mtr); + mtr_has_extra_clust_latch = FALSE; + + trx->error_state = err; + + /* The following is a patch for MySQL */ + + que_thr_stop_for_mysql(thr); + + thr->lock_state = QUE_THR_LOCK_ROW; + + if (row_mysql_handle_errors(&err, trx, thr, NULL)) { + /* It was a lock wait, and it ended */ + + thr->lock_state = QUE_THR_LOCK_NOLOCK; + mtr_start(&mtr); + + sel_restore_position_for_mysql(&same_user_rec, + BTR_SEARCH_LEAF, pcur, + moves_up, &mtr); + + if ((srv_locks_unsafe_for_binlog + || trx->isolation_level == TRX_ISO_READ_COMMITTED) + && !same_user_rec) { + + /* Since we were not able to restore the cursor + on the same user record, we cannot use + row_unlock_for_mysql() to unlock any records, and + we must thus reset the new rec lock info. Since + in lock0lock.c we have blocked the inheriting of gap + X-locks, we actually do not have any new record locks + set in this case. + + Note that if we were able to restore on the 'same' + user record, it is still possible that we were actually + waiting on a delete-marked record, and meanwhile + it was removed by purge and inserted again by some + other user. But that is no problem, because in + rec_loop we will again try to set a lock, and + new_rec_lock_info in trx will be right at the end. */ + + trx_reset_new_rec_lock_info(trx); + } + + mode = pcur->search_mode; + + goto rec_loop; + } + + thr->lock_state = QUE_THR_LOCK_NOLOCK; + +#ifdef UNIV_SEARCH_DEBUG + /* fputs("Using ", stderr); + dict_index_name_print(stderr, index); + fprintf(stderr, " cnt %lu ret value %lu err\n", cnt, err); */ +#endif /* UNIV_SEARCH_DEBUG */ + goto func_exit; + +normal_return: + /*-------------------------------------------------------------*/ + que_thr_stop_for_mysql_no_error(thr, trx); + + mtr_commit(&mtr); + + if (prebuilt->n_fetch_cached > 0) { + row_sel_pop_cached_row_for_mysql(buf, prebuilt); + + err = DB_SUCCESS; + } + +#ifdef UNIV_SEARCH_DEBUG + /* fputs("Using ", stderr); + dict_index_name_print(stderr, index); + fprintf(stderr, " cnt %lu ret value %lu err\n", cnt, err); */ +#endif /* UNIV_SEARCH_DEBUG */ + if (err == DB_SUCCESS) { + srv_n_rows_read++; + } + +func_exit: + trx->op_info = ""; + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } + + /* Set or reset the "did semi-consistent read" flag on return. + The flag did_semi_consistent_read is set if and only if + the record being returned was fetched with a semi-consistent read. */ + ut_ad(prebuilt->row_read_type != ROW_READ_WITH_LOCKS + || !did_semi_consistent_read); + + if (UNIV_UNLIKELY(prebuilt->row_read_type != ROW_READ_WITH_LOCKS)) { + if (UNIV_UNLIKELY(did_semi_consistent_read)) { + prebuilt->row_read_type = ROW_READ_DID_SEMI_CONSISTENT; + } else { + prebuilt->row_read_type = ROW_READ_TRY_SEMI_CONSISTENT; + } + } + return(err); +} + +/*********************************************************************** +Checks if MySQL at the moment is allowed for this table to retrieve a +consistent read result, or store it to the query cache. */ +UNIV_INTERN +ibool +row_search_check_if_query_cache_permitted( +/*======================================*/ + /* out: TRUE if storing or retrieving + from the query cache is permitted */ + trx_t* trx, /* in: transaction object */ + const char* norm_name) /* in: concatenation of database name, + '/' char, table name */ +{ + dict_table_t* table; + ibool ret = FALSE; + + table = dict_table_get(norm_name, FALSE); + + if (table == NULL) { + + return(FALSE); + } + + mutex_enter(&kernel_mutex); + + /* Start the transaction if it is not started yet */ + + trx_start_if_not_started_low(trx); + + /* If there are locks on the table or some trx has invalidated the + cache up to our trx id, then ret = FALSE. + We do not check what type locks there are on the table, though only + IX type locks actually would require ret = FALSE. */ + + if (UT_LIST_GET_LEN(table->locks) == 0 + && ut_dulint_cmp(trx->id, + table->query_cache_inv_trx_id) >= 0) { + + ret = TRUE; + + /* If the isolation level is high, assign a read view for the + transaction if it does not yet have one */ + + if (trx->isolation_level >= TRX_ISO_REPEATABLE_READ + && !trx->read_view) { + + trx->read_view = read_view_open_now( + trx->id, trx->global_read_view_heap); + trx->global_read_view = trx->read_view; + } + } + + mutex_exit(&kernel_mutex); + + return(ret); +} + +/*********************************************************************** +Read the AUTOINC column from the current row. If the value is less than +0 and the type is not unsigned then we reset the value to 0. */ +static +ib_uint64_t +row_search_autoinc_read_column( +/*===========================*/ + /* out: value read from the column */ + dict_index_t* index, /* in: index to read from */ + const rec_t* rec, /* in: current rec */ + ulint col_no, /* in: column number */ + ibool unsigned_type) /* in: signed or unsigned flag */ +{ + ulint len; + const byte* data; + ib_uint64_t value; + mem_heap_t* heap = NULL; + ulint offsets_[REC_OFFS_NORMAL_SIZE]; + ulint* offsets = offsets_; + + rec_offs_init(offsets_); + + offsets = rec_get_offsets(rec, index, offsets, ULINT_UNDEFINED, &heap); + + data = rec_get_nth_field(rec, offsets, col_no, &len); + + ut_a(len != UNIV_SQL_NULL); + ut_a(len <= sizeof value); + + /* we assume AUTOINC value cannot be negative */ + value = mach_read_int_type(data, len, unsigned_type); + + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } + + if (!unsigned_type && (ib_int64_t) value < 0) { + value = 0; + } + + return(value); +} + +/*********************************************************************** +Get the last row. */ +static +const rec_t* +row_search_autoinc_get_rec( +/*=======================*/ + /* out: current rec or NULL */ + btr_pcur_t* pcur, /* in: the current cursor */ + mtr_t* mtr) /* in: mini transaction */ +{ + do { + const rec_t* rec = btr_pcur_get_rec(pcur); + + if (page_rec_is_user_rec(rec)) { + return(rec); + } + } while (btr_pcur_move_to_prev(pcur, mtr)); + + return(NULL); +} + +/*********************************************************************** +Read the max AUTOINC value from an index. */ +UNIV_INTERN +ulint +row_search_max_autoinc( +/*===================*/ + /* out: DB_SUCCESS if all OK else + error code, DB_RECORD_NOT_FOUND if + column name can't be found in index */ + dict_index_t* index, /* in: index to search */ + const char* col_name, /* in: name of autoinc column */ + ib_uint64_t* value) /* out: AUTOINC value read */ +{ + ulint i; + ulint n_cols; + dict_field_t* dfield = NULL; + ulint error = DB_SUCCESS; + + n_cols = dict_index_get_n_ordering_defined_by_user(index); + + /* Search the index for the AUTOINC column name */ + for (i = 0; i < n_cols; ++i) { + dfield = dict_index_get_nth_field(index, i); + + if (strcmp(col_name, dfield->name) == 0) { + break; + } + } + + *value = 0; + + /* Must find the AUTOINC column name */ + if (i < n_cols && dfield) { + mtr_t mtr; + btr_pcur_t pcur; + + mtr_start(&mtr); + + /* Open at the high/right end (FALSE), and INIT + cursor (TRUE) */ + btr_pcur_open_at_index_side( + FALSE, index, BTR_SEARCH_LEAF, &pcur, TRUE, &mtr); + + if (page_get_n_recs(btr_pcur_get_page(&pcur)) > 0) { + const rec_t* rec; + + rec = row_search_autoinc_get_rec(&pcur, &mtr); + + if (rec != NULL) { + ibool unsigned_type = ( + dfield->col->prtype & DATA_UNSIGNED); + + *value = row_search_autoinc_read_column( + index, rec, i, unsigned_type); + } + } + + btr_pcur_close(&pcur); + + mtr_commit(&mtr); + } else { + error = DB_RECORD_NOT_FOUND; + } + + return(error); +} === added file 'storage/xtradb/row/row0uins.c' --- a/storage/xtradb/row/row0uins.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/row/row0uins.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,350 @@ +/***************************************************************************** + +Copyright (c) 1997, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Fresh insert undo + +Created 2/25/1997 Heikki Tuuri +*******************************************************/ + +#include "row0uins.h" + +#ifdef UNIV_NONINL +#include "row0uins.ic" +#endif + +#include "dict0dict.h" +#include "dict0boot.h" +#include "dict0crea.h" +#include "trx0undo.h" +#include "trx0roll.h" +#include "btr0btr.h" +#include "mach0data.h" +#include "row0undo.h" +#include "row0vers.h" +#include "trx0trx.h" +#include "trx0rec.h" +#include "row0row.h" +#include "row0upd.h" +#include "que0que.h" +#include "ibuf0ibuf.h" +#include "log0log.h" + +/******************************************************************* +Removes a clustered index record. The pcur in node was positioned on the +record, now it is detached. */ +static +ulint +row_undo_ins_remove_clust_rec( +/*==========================*/ + /* out: DB_SUCCESS or DB_OUT_OF_FILE_SPACE */ + undo_node_t* node) /* in: undo node */ +{ + btr_cur_t* btr_cur; + ibool success; + ulint err; + ulint n_tries = 0; + mtr_t mtr; + + mtr_start(&mtr); + + success = btr_pcur_restore_position(BTR_MODIFY_LEAF, &(node->pcur), + &mtr); + ut_a(success); + + if (ut_dulint_cmp(node->table->id, DICT_INDEXES_ID) == 0) { + ut_ad(node->trx->dict_operation_lock_mode == RW_X_LATCH); + + /* Drop the index tree associated with the row in + SYS_INDEXES table: */ + + dict_drop_index_tree(btr_pcur_get_rec(&(node->pcur)), &mtr); + + mtr_commit(&mtr); + + mtr_start(&mtr); + + success = btr_pcur_restore_position(BTR_MODIFY_LEAF, + &(node->pcur), &mtr); + ut_a(success); + } + + btr_cur = btr_pcur_get_btr_cur(&(node->pcur)); + + success = btr_cur_optimistic_delete(btr_cur, &mtr); + + btr_pcur_commit_specify_mtr(&(node->pcur), &mtr); + + if (success) { + trx_undo_rec_release(node->trx, node->undo_no); + + return(DB_SUCCESS); + } +retry: + /* If did not succeed, try pessimistic descent to tree */ + mtr_start(&mtr); + + success = btr_pcur_restore_position(BTR_MODIFY_TREE, + &(node->pcur), &mtr); + ut_a(success); + + btr_cur_pessimistic_delete(&err, FALSE, btr_cur, + trx_is_recv(node->trx) + ? RB_RECOVERY + : RB_NORMAL, &mtr); + + /* The delete operation may fail if we have little + file space left: TODO: easiest to crash the database + and restart with more file space */ + + if (err == DB_OUT_OF_FILE_SPACE + && n_tries < BTR_CUR_RETRY_DELETE_N_TIMES) { + + btr_pcur_commit_specify_mtr(&(node->pcur), &mtr); + + n_tries++; + + os_thread_sleep(BTR_CUR_RETRY_SLEEP_TIME); + + goto retry; + } + + btr_pcur_commit_specify_mtr(&(node->pcur), &mtr); + + trx_undo_rec_release(node->trx, node->undo_no); + + return(err); +} + +/******************************************************************* +Removes a secondary index entry if found. */ +static +ulint +row_undo_ins_remove_sec_low( +/*========================*/ + /* out: DB_SUCCESS, DB_FAIL, or + DB_OUT_OF_FILE_SPACE */ + ulint mode, /* in: BTR_MODIFY_LEAF or BTR_MODIFY_TREE, + depending on whether we wish optimistic or + pessimistic descent down the index tree */ + dict_index_t* index, /* in: index */ + dtuple_t* entry) /* in: index entry to remove */ +{ + btr_pcur_t pcur; + btr_cur_t* btr_cur; + ibool found; + ibool success; + ulint err; + mtr_t mtr; + + log_free_check(); + mtr_start(&mtr); + + found = row_search_index_entry(index, entry, mode, &pcur, &mtr); + + btr_cur = btr_pcur_get_btr_cur(&pcur); + + if (!found) { + /* Not found */ + + btr_pcur_close(&pcur); + mtr_commit(&mtr); + + return(DB_SUCCESS); + } + + if (mode == BTR_MODIFY_LEAF) { + success = btr_cur_optimistic_delete(btr_cur, &mtr); + + if (success) { + err = DB_SUCCESS; + } else { + err = DB_FAIL; + } + } else { + ut_ad(mode == BTR_MODIFY_TREE); + + /* No need to distinguish RB_RECOVERY here, because we + are deleting a secondary index record: the distinction + between RB_NORMAL and RB_RECOVERY only matters when + deleting a record that contains externally stored + columns. */ + ut_ad(!dict_index_is_clust(index)); + btr_cur_pessimistic_delete(&err, FALSE, btr_cur, + RB_NORMAL, &mtr); + } + + btr_pcur_close(&pcur); + mtr_commit(&mtr); + + return(err); +} + +/******************************************************************* +Removes a secondary index entry from the index if found. Tries first +optimistic, then pessimistic descent down the tree. */ +static +ulint +row_undo_ins_remove_sec( +/*====================*/ + /* out: DB_SUCCESS or DB_OUT_OF_FILE_SPACE */ + dict_index_t* index, /* in: index */ + dtuple_t* entry) /* in: index entry to insert */ +{ + ulint err; + ulint n_tries = 0; + + /* Try first optimistic descent to the B-tree */ + + err = row_undo_ins_remove_sec_low(BTR_MODIFY_LEAF, index, entry); + + if (err == DB_SUCCESS) { + + return(err); + } + + /* Try then pessimistic descent to the B-tree */ +retry: + err = row_undo_ins_remove_sec_low(BTR_MODIFY_TREE, index, entry); + + /* The delete operation may fail if we have little + file space left: TODO: easiest to crash the database + and restart with more file space */ + + if (err != DB_SUCCESS && n_tries < BTR_CUR_RETRY_DELETE_N_TIMES) { + + n_tries++; + + os_thread_sleep(BTR_CUR_RETRY_SLEEP_TIME); + + goto retry; + } + + return(err); +} + +/*************************************************************** +Parses the row reference and other info in a fresh insert undo record. */ +static +void +row_undo_ins_parse_undo_rec( +/*========================*/ + undo_node_t* node) /* in/out: row undo node */ +{ + dict_index_t* clust_index; + byte* ptr; + dulint undo_no; + dulint table_id; + ulint type; + ulint dummy; + ibool dummy_extern; + + ut_ad(node); + + ptr = trx_undo_rec_get_pars(node->undo_rec, &type, &dummy, + &dummy_extern, &undo_no, &table_id); + ut_ad(type == TRX_UNDO_INSERT_REC); + node->rec_type = type; + + node->update = NULL; + node->table = dict_table_get_on_id(table_id, node->trx); + + /* Skip the UNDO if we can't find the table or the .ibd file. */ + if (UNIV_UNLIKELY(node->table == NULL)) { + } else if (UNIV_UNLIKELY(node->table->ibd_file_missing)) { + node->table = NULL; + } else { + clust_index = dict_table_get_first_index(node->table); + + if (clust_index != NULL) { + ptr = trx_undo_rec_get_row_ref( + ptr, clust_index, &node->ref, node->heap); + } else { + ut_print_timestamp(stderr); + fprintf(stderr, " InnoDB: table "); + ut_print_name(stderr, node->trx, TRUE, + node->table->name); + fprintf(stderr, " has no indexes, " + "ignoring the table\n"); + + node->table = NULL; + } + } +} + +/*************************************************************** +Undoes a fresh insert of a row to a table. A fresh insert means that +the same clustered index unique key did not have any record, even delete +marked, at the time of the insert. InnoDB is eager in a rollback: +if it figures out that an index record will be removed in the purge +anyway, it will remove it in the rollback. */ +UNIV_INTERN +ulint +row_undo_ins( +/*=========*/ + /* out: DB_SUCCESS or DB_OUT_OF_FILE_SPACE */ + undo_node_t* node) /* in: row undo node */ +{ + ut_ad(node); + ut_ad(node->state == UNDO_NODE_INSERT); + + row_undo_ins_parse_undo_rec(node); + + if (!node->table || !row_undo_search_clust_to_pcur(node)) { + trx_undo_rec_release(node->trx, node->undo_no); + + return(DB_SUCCESS); + } + + /* Iterate over all the indexes and undo the insert.*/ + + /* Skip the clustered index (the first index) */ + node->index = dict_table_get_next_index( + dict_table_get_first_index(node->table)); + + while (node->index != NULL) { + dtuple_t* entry; + ulint err; + + entry = row_build_index_entry(node->row, node->ext, + node->index, node->heap); + if (UNIV_UNLIKELY(!entry)) { + /* The database must have crashed after + inserting a clustered index record but before + writing all the externally stored columns of + that record. Because secondary index entries + are inserted after the clustered index record, + we may assume that the secondary index record + does not exist. However, this situation may + only occur during the rollback of incomplete + transactions. */ + ut_a(trx_is_recv(node->trx)); + } else { + err = row_undo_ins_remove_sec(node->index, entry); + + if (err != DB_SUCCESS) { + + return(err); + } + } + + node->index = dict_table_get_next_index(node->index); + } + + return(row_undo_ins_remove_clust_rec(node)); +} === added file 'storage/xtradb/row/row0umod.c' --- a/storage/xtradb/row/row0umod.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/row/row0umod.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,820 @@ +/***************************************************************************** + +Copyright (c) 1997, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Undo modify of a row + +Created 2/27/1997 Heikki Tuuri +*******************************************************/ + +#include "row0umod.h" + +#ifdef UNIV_NONINL +#include "row0umod.ic" +#endif + +#include "dict0dict.h" +#include "dict0boot.h" +#include "trx0undo.h" +#include "trx0roll.h" +#include "btr0btr.h" +#include "mach0data.h" +#include "row0undo.h" +#include "row0vers.h" +#include "trx0trx.h" +#include "trx0rec.h" +#include "row0row.h" +#include "row0upd.h" +#include "que0que.h" +#include "log0log.h" + +/* Considerations on undoing a modify operation. +(1) Undoing a delete marking: all index records should be found. Some of +them may have delete mark already FALSE, if the delete mark operation was +stopped underway, or if the undo operation ended prematurely because of a +system crash. +(2) Undoing an update of a delete unmarked record: the newer version of +an updated secondary index entry should be removed if no prior version +of the clustered index record requires its existence. Otherwise, it should +be delete marked. +(3) Undoing an update of a delete marked record. In this kind of update a +delete marked clustered index record was delete unmarked and possibly also +some of its fields were changed. Now, it is possible that the delete marked +version has become obsolete at the time the undo is started. */ + +/*************************************************************** +Checks if also the previous version of the clustered index record was +modified or inserted by the same transaction, and its undo number is such +that it should be undone in the same rollback. */ +UNIV_INLINE +ibool +row_undo_mod_undo_also_prev_vers( +/*=============================*/ + /* out: TRUE if also previous modify or + insert of this row should be undone */ + undo_node_t* node, /* in: row undo node */ + dulint* undo_no)/* out: the undo number */ +{ + trx_undo_rec_t* undo_rec; + trx_t* trx; + + trx = node->trx; + + if (0 != ut_dulint_cmp(node->new_trx_id, trx->id)) { + + *undo_no = ut_dulint_zero; + return(FALSE); + } + + undo_rec = trx_undo_get_undo_rec_low(node->new_roll_ptr, node->heap); + + *undo_no = trx_undo_rec_get_undo_no(undo_rec); + + return(ut_dulint_cmp(trx->roll_limit, *undo_no) <= 0); +} + +/*************************************************************** +Undoes a modify in a clustered index record. */ +static +ulint +row_undo_mod_clust_low( +/*===================*/ + /* out: DB_SUCCESS, DB_FAIL, or error code: + we may run out of file space */ + undo_node_t* node, /* in: row undo node */ + que_thr_t* thr, /* in: query thread */ + mtr_t* mtr, /* in: mtr; must be committed before + latching any further pages */ + ulint mode) /* in: BTR_MODIFY_LEAF or BTR_MODIFY_TREE */ +{ + btr_pcur_t* pcur; + btr_cur_t* btr_cur; + ulint err; + ibool success; + + pcur = &(node->pcur); + btr_cur = btr_pcur_get_btr_cur(pcur); + + success = btr_pcur_restore_position(mode, pcur, mtr); + + ut_ad(success); + + if (mode == BTR_MODIFY_LEAF) { + + err = btr_cur_optimistic_update(BTR_NO_LOCKING_FLAG + | BTR_NO_UNDO_LOG_FLAG + | BTR_KEEP_SYS_FLAG, + btr_cur, node->update, + node->cmpl_info, thr, mtr); + } else { + mem_heap_t* heap = NULL; + big_rec_t* dummy_big_rec; + + ut_ad(mode == BTR_MODIFY_TREE); + + err = btr_cur_pessimistic_update( + BTR_NO_LOCKING_FLAG + | BTR_NO_UNDO_LOG_FLAG + | BTR_KEEP_SYS_FLAG, + btr_cur, &heap, &dummy_big_rec, node->update, + node->cmpl_info, thr, mtr); + + ut_a(!dummy_big_rec); + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } + } + + return(err); +} + +/*************************************************************** +Removes a clustered index record after undo if possible. */ +static +ulint +row_undo_mod_remove_clust_low( +/*==========================*/ + /* out: DB_SUCCESS, DB_FAIL, or error code: + we may run out of file space */ + undo_node_t* node, /* in: row undo node */ + que_thr_t* thr __attribute__((unused)), /* in: query thread */ + mtr_t* mtr, /* in: mtr */ + ulint mode) /* in: BTR_MODIFY_LEAF or BTR_MODIFY_TREE */ +{ + btr_pcur_t* pcur; + btr_cur_t* btr_cur; + ulint err; + ibool success; + + pcur = &(node->pcur); + btr_cur = btr_pcur_get_btr_cur(pcur); + + success = btr_pcur_restore_position(mode, pcur, mtr); + + if (!success) { + + return(DB_SUCCESS); + } + + /* Find out if we can remove the whole clustered index record */ + + if (node->rec_type == TRX_UNDO_UPD_DEL_REC + && !row_vers_must_preserve_del_marked(node->new_trx_id, mtr)) { + + /* Ok, we can remove */ + } else { + return(DB_SUCCESS); + } + + if (mode == BTR_MODIFY_LEAF) { + success = btr_cur_optimistic_delete(btr_cur, mtr); + + if (success) { + err = DB_SUCCESS; + } else { + err = DB_FAIL; + } + } else { + ut_ad(mode == BTR_MODIFY_TREE); + + /* Note that since this operation is analogous to purge, + we can free also inherited externally stored fields: + hence the RB_NONE in the call below */ + + btr_cur_pessimistic_delete(&err, FALSE, btr_cur, RB_NONE, mtr); + + /* The delete operation may fail if we have little + file space left: TODO: easiest to crash the database + and restart with more file space */ + } + + return(err); +} + +/*************************************************************** +Undoes a modify in a clustered index record. Sets also the node state for the +next round of undo. */ +static +ulint +row_undo_mod_clust( +/*===============*/ + /* out: DB_SUCCESS or error code: we may run + out of file space */ + undo_node_t* node, /* in: row undo node */ + que_thr_t* thr) /* in: query thread */ +{ + btr_pcur_t* pcur; + mtr_t mtr; + ulint err; + ibool success; + ibool more_vers; + dulint new_undo_no; + + ut_ad(node && thr); + + /* Check if also the previous version of the clustered index record + should be undone in this same rollback operation */ + + more_vers = row_undo_mod_undo_also_prev_vers(node, &new_undo_no); + + pcur = &(node->pcur); + + mtr_start(&mtr); + + /* Try optimistic processing of the record, keeping changes within + the index page */ + + err = row_undo_mod_clust_low(node, thr, &mtr, BTR_MODIFY_LEAF); + + if (err != DB_SUCCESS) { + btr_pcur_commit_specify_mtr(pcur, &mtr); + + /* We may have to modify tree structure: do a pessimistic + descent down the index tree */ + + mtr_start(&mtr); + + err = row_undo_mod_clust_low(node, thr, &mtr, BTR_MODIFY_TREE); + } + + btr_pcur_commit_specify_mtr(pcur, &mtr); + + if (err == DB_SUCCESS && node->rec_type == TRX_UNDO_UPD_DEL_REC) { + + mtr_start(&mtr); + + err = row_undo_mod_remove_clust_low(node, thr, &mtr, + BTR_MODIFY_LEAF); + if (err != DB_SUCCESS) { + btr_pcur_commit_specify_mtr(pcur, &mtr); + + /* We may have to modify tree structure: do a + pessimistic descent down the index tree */ + + mtr_start(&mtr); + + err = row_undo_mod_remove_clust_low(node, thr, &mtr, + BTR_MODIFY_TREE); + } + + btr_pcur_commit_specify_mtr(pcur, &mtr); + } + + node->state = UNDO_NODE_FETCH_NEXT; + + trx_undo_rec_release(node->trx, node->undo_no); + + if (more_vers && err == DB_SUCCESS) { + + /* Reserve the undo log record to the prior version after + committing &mtr: this is necessary to comply with the latching + order, as &mtr may contain the fsp latch which is lower in + the latch hierarchy than trx->undo_mutex. */ + + success = trx_undo_rec_reserve(node->trx, new_undo_no); + + if (success) { + node->state = UNDO_NODE_PREV_VERS; + } + } + + return(err); +} + +/*************************************************************** +Delete marks or removes a secondary index entry if found. */ +static +ulint +row_undo_mod_del_mark_or_remove_sec_low( +/*====================================*/ + /* out: DB_SUCCESS, DB_FAIL, or + DB_OUT_OF_FILE_SPACE */ + undo_node_t* node, /* in: row undo node */ + que_thr_t* thr, /* in: query thread */ + dict_index_t* index, /* in: index */ + dtuple_t* entry, /* in: index entry */ + ulint mode) /* in: latch mode BTR_MODIFY_LEAF or + BTR_MODIFY_TREE */ +{ + ibool found; + btr_pcur_t pcur; + btr_cur_t* btr_cur; + ibool success; + ibool old_has; + ulint err; + mtr_t mtr; + mtr_t mtr_vers; + + log_free_check(); + mtr_start(&mtr); + + found = row_search_index_entry(index, entry, mode, &pcur, &mtr); + + btr_cur = btr_pcur_get_btr_cur(&pcur); + + if (!found) { + /* In crash recovery, the secondary index record may + be missing if the UPDATE did not have time to insert + the secondary index records before the crash. When we + are undoing that UPDATE in crash recovery, the record + may be missing. + + In normal processing, if an update ends in a deadlock + before it has inserted all updated secondary index + records, then the undo will not find those records. */ + + btr_pcur_close(&pcur); + mtr_commit(&mtr); + + return(DB_SUCCESS); + } + + /* We should remove the index record if no prior version of the row, + which cannot be purged yet, requires its existence. If some requires, + we should delete mark the record. */ + + mtr_start(&mtr_vers); + + success = btr_pcur_restore_position(BTR_SEARCH_LEAF, &(node->pcur), + &mtr_vers); + ut_a(success); + + old_has = row_vers_old_has_index_entry(FALSE, + btr_pcur_get_rec(&(node->pcur)), + &mtr_vers, index, entry); + if (old_has) { + err = btr_cur_del_mark_set_sec_rec(BTR_NO_LOCKING_FLAG, + btr_cur, TRUE, thr, &mtr); + ut_ad(err == DB_SUCCESS); + } else { + /* Remove the index record */ + + if (mode == BTR_MODIFY_LEAF) { + success = btr_cur_optimistic_delete(btr_cur, &mtr); + if (success) { + err = DB_SUCCESS; + } else { + err = DB_FAIL; + } + } else { + ut_ad(mode == BTR_MODIFY_TREE); + + /* No need to distinguish RB_RECOVERY here, because we + are deleting a secondary index record: the distinction + between RB_NORMAL and RB_RECOVERY only matters when + deleting a record that contains externally stored + columns. */ + ut_ad(!dict_index_is_clust(index)); + btr_cur_pessimistic_delete(&err, FALSE, btr_cur, + RB_NORMAL, &mtr); + + /* The delete operation may fail if we have little + file space left: TODO: easiest to crash the database + and restart with more file space */ + } + } + + btr_pcur_commit_specify_mtr(&(node->pcur), &mtr_vers); + btr_pcur_close(&pcur); + mtr_commit(&mtr); + + return(err); +} + +/*************************************************************** +Delete marks or removes a secondary index entry if found. +NOTE that if we updated the fields of a delete-marked secondary index record +so that alphabetically they stayed the same, e.g., 'abc' -> 'aBc', we cannot +return to the original values because we do not know them. But this should +not cause problems because in row0sel.c, in queries we always retrieve the +clustered index record or an earlier version of it, if the secondary index +record through which we do the search is delete-marked. */ +static +ulint +row_undo_mod_del_mark_or_remove_sec( +/*================================*/ + /* out: DB_SUCCESS or DB_OUT_OF_FILE_SPACE */ + undo_node_t* node, /* in: row undo node */ + que_thr_t* thr, /* in: query thread */ + dict_index_t* index, /* in: index */ + dtuple_t* entry) /* in: index entry */ +{ + ulint err; + + err = row_undo_mod_del_mark_or_remove_sec_low(node, thr, index, + entry, BTR_MODIFY_LEAF); + if (err == DB_SUCCESS) { + + return(err); + } + + err = row_undo_mod_del_mark_or_remove_sec_low(node, thr, index, + entry, BTR_MODIFY_TREE); + return(err); +} + +/*************************************************************** +Delete unmarks a secondary index entry which must be found. It might not be +delete-marked at the moment, but it does not harm to unmark it anyway. We also +need to update the fields of the secondary index record if we updated its +fields but alphabetically they stayed the same, e.g., 'abc' -> 'aBc'. */ +static +ulint +row_undo_mod_del_unmark_sec_and_undo_update( +/*========================================*/ + /* out: DB_FAIL or DB_SUCCESS or + DB_OUT_OF_FILE_SPACE */ + ulint mode, /* in: search mode: BTR_MODIFY_LEAF or + BTR_MODIFY_TREE */ + que_thr_t* thr, /* in: query thread */ + dict_index_t* index, /* in: index */ + dtuple_t* entry) /* in: index entry */ +{ + mem_heap_t* heap; + btr_pcur_t pcur; + upd_t* update; + ulint err = DB_SUCCESS; + big_rec_t* dummy_big_rec; + mtr_t mtr; + trx_t* trx = thr_get_trx(thr); + + /* Ignore indexes that are being created. */ + if (UNIV_UNLIKELY(*index->name == TEMP_INDEX_PREFIX)) { + + return(DB_SUCCESS); + } + + log_free_check(); + mtr_start(&mtr); + + if (UNIV_UNLIKELY(!row_search_index_entry(index, entry, + mode, &pcur, &mtr))) { + fputs("InnoDB: error in sec index entry del undo in\n" + "InnoDB: ", stderr); + dict_index_name_print(stderr, trx, index); + fputs("\n" + "InnoDB: tuple ", stderr); + dtuple_print(stderr, entry); + fputs("\n" + "InnoDB: record ", stderr); + rec_print(stderr, btr_pcur_get_rec(&pcur), index); + putc('\n', stderr); + trx_print(stderr, trx, 0); + fputs("\n" + "InnoDB: Submit a detailed bug report" + " to http://bugs.mysql.com\n", stderr); + } else { + btr_cur_t* btr_cur = btr_pcur_get_btr_cur(&pcur); + + err = btr_cur_del_mark_set_sec_rec(BTR_NO_LOCKING_FLAG, + btr_cur, FALSE, thr, &mtr); + ut_a(err == DB_SUCCESS); + heap = mem_heap_create(100); + + update = row_upd_build_sec_rec_difference_binary( + index, entry, btr_cur_get_rec(btr_cur), trx, heap); + if (upd_get_n_fields(update) == 0) { + + /* Do nothing */ + + } else if (mode == BTR_MODIFY_LEAF) { + /* Try an optimistic updating of the record, keeping + changes within the page */ + + err = btr_cur_optimistic_update( + BTR_KEEP_SYS_FLAG | BTR_NO_LOCKING_FLAG, + btr_cur, update, 0, thr, &mtr); + switch (err) { + case DB_OVERFLOW: + case DB_UNDERFLOW: + case DB_ZIP_OVERFLOW: + err = DB_FAIL; + } + } else { + ut_a(mode == BTR_MODIFY_TREE); + err = btr_cur_pessimistic_update( + BTR_KEEP_SYS_FLAG | BTR_NO_LOCKING_FLAG, + btr_cur, &heap, &dummy_big_rec, + update, 0, thr, &mtr); + ut_a(!dummy_big_rec); + } + + mem_heap_free(heap); + } + + btr_pcur_close(&pcur); + mtr_commit(&mtr); + + return(err); +} + +/*************************************************************** +Undoes a modify in secondary indexes when undo record type is UPD_DEL. */ +static +ulint +row_undo_mod_upd_del_sec( +/*=====================*/ + /* out: DB_SUCCESS or DB_OUT_OF_FILE_SPACE */ + undo_node_t* node, /* in: row undo node */ + que_thr_t* thr) /* in: query thread */ +{ + mem_heap_t* heap; + dtuple_t* entry; + dict_index_t* index; + ulint err = DB_SUCCESS; + + heap = mem_heap_create(1024); + + while (node->index != NULL) { + index = node->index; + + entry = row_build_index_entry(node->row, node->ext, + index, heap); + if (UNIV_UNLIKELY(!entry)) { + /* The database must have crashed after + inserting a clustered index record but before + writing all the externally stored columns of + that record. Because secondary index entries + are inserted after the clustered index record, + we may assume that the secondary index record + does not exist. However, this situation may + only occur during the rollback of incomplete + transactions. */ + ut_a(trx_is_recv(thr_get_trx(thr))); + } else { + err = row_undo_mod_del_mark_or_remove_sec( + node, thr, index, entry); + + if (err != DB_SUCCESS) { + + break; + } + } + + mem_heap_empty(heap); + + node->index = dict_table_get_next_index(node->index); + } + + mem_heap_free(heap); + + return(err); +} + +/*************************************************************** +Undoes a modify in secondary indexes when undo record type is DEL_MARK. */ +static +ulint +row_undo_mod_del_mark_sec( +/*======================*/ + /* out: DB_SUCCESS or DB_OUT_OF_FILE_SPACE */ + undo_node_t* node, /* in: row undo node */ + que_thr_t* thr) /* in: query thread */ +{ + mem_heap_t* heap; + dtuple_t* entry; + dict_index_t* index; + ulint err; + + heap = mem_heap_create(1024); + + while (node->index != NULL) { + index = node->index; + + entry = row_build_index_entry(node->row, node->ext, + index, heap); + ut_a(entry); + err = row_undo_mod_del_unmark_sec_and_undo_update( + BTR_MODIFY_LEAF, thr, index, entry); + if (err == DB_FAIL) { + err = row_undo_mod_del_unmark_sec_and_undo_update( + BTR_MODIFY_TREE, thr, index, entry); + } + + if (err != DB_SUCCESS) { + + mem_heap_free(heap); + + return(err); + } + + node->index = dict_table_get_next_index(node->index); + } + + mem_heap_free(heap); + + return(DB_SUCCESS); +} + +/*************************************************************** +Undoes a modify in secondary indexes when undo record type is UPD_EXIST. */ +static +ulint +row_undo_mod_upd_exist_sec( +/*=======================*/ + /* out: DB_SUCCESS or DB_OUT_OF_FILE_SPACE */ + undo_node_t* node, /* in: row undo node */ + que_thr_t* thr) /* in: query thread */ +{ + mem_heap_t* heap; + dtuple_t* entry; + dict_index_t* index; + ulint err; + + if (node->cmpl_info & UPD_NODE_NO_ORD_CHANGE) { + /* No change in secondary indexes */ + + return(DB_SUCCESS); + } + + heap = mem_heap_create(1024); + + while (node->index != NULL) { + index = node->index; + + if (row_upd_changes_ord_field_binary(node->row, node->index, + node->update)) { + + /* Build the newest version of the index entry */ + entry = row_build_index_entry(node->row, node->ext, + index, heap); + ut_a(entry); + /* NOTE that if we updated the fields of a + delete-marked secondary index record so that + alphabetically they stayed the same, e.g., + 'abc' -> 'aBc', we cannot return to the original + values because we do not know them. But this should + not cause problems because in row0sel.c, in queries + we always retrieve the clustered index record or an + earlier version of it, if the secondary index record + through which we do the search is delete-marked. */ + + err = row_undo_mod_del_mark_or_remove_sec(node, thr, + index, + entry); + if (err != DB_SUCCESS) { + mem_heap_free(heap); + + return(err); + } + + /* We may have to update the delete mark in the + secondary index record of the previous version of + the row. We also need to update the fields of + the secondary index record if we updated its fields + but alphabetically they stayed the same, e.g., + 'abc' -> 'aBc'. */ + mem_heap_empty(heap); + entry = row_build_index_entry(node->undo_row, + node->undo_ext, + index, heap); + ut_a(entry); + + err = row_undo_mod_del_unmark_sec_and_undo_update( + BTR_MODIFY_LEAF, thr, index, entry); + if (err == DB_FAIL) { + err = row_undo_mod_del_unmark_sec_and_undo_update( + BTR_MODIFY_TREE, thr, index, entry); + } + + if (err != DB_SUCCESS) { + mem_heap_free(heap); + + return(err); + } + } + + node->index = dict_table_get_next_index(node->index); + } + + mem_heap_free(heap); + + return(DB_SUCCESS); +} + +/*************************************************************** +Parses the row reference and other info in a modify undo log record. */ +static +void +row_undo_mod_parse_undo_rec( +/*========================*/ + undo_node_t* node, /* in: row undo node */ + que_thr_t* thr) /* in: query thread */ +{ + dict_index_t* clust_index; + byte* ptr; + dulint undo_no; + dulint table_id; + dulint trx_id; + dulint roll_ptr; + ulint info_bits; + ulint type; + ulint cmpl_info; + ibool dummy_extern; + trx_t* trx; + + ut_ad(node && thr); + trx = thr_get_trx(thr); + ptr = trx_undo_rec_get_pars(node->undo_rec, &type, &cmpl_info, + &dummy_extern, &undo_no, &table_id); + node->rec_type = type; + + node->table = dict_table_get_on_id(table_id, trx); + + /* TODO: other fixes associated with DROP TABLE + rollback in the + same table by another user */ + + if (node->table == NULL) { + /* Table was dropped */ + return; + } + + if (node->table->ibd_file_missing) { + /* We skip undo operations to missing .ibd files */ + node->table = NULL; + + return; + } + + clust_index = dict_table_get_first_index(node->table); + + ptr = trx_undo_update_rec_get_sys_cols(ptr, &trx_id, &roll_ptr, + &info_bits); + + ptr = trx_undo_rec_get_row_ref(ptr, clust_index, &(node->ref), + node->heap); + + trx_undo_update_rec_get_update(ptr, clust_index, type, trx_id, + roll_ptr, info_bits, trx, + node->heap, &(node->update)); + node->new_roll_ptr = roll_ptr; + node->new_trx_id = trx_id; + node->cmpl_info = cmpl_info; +} + +/*************************************************************** +Undoes a modify operation on a row of a table. */ +UNIV_INTERN +ulint +row_undo_mod( +/*=========*/ + /* out: DB_SUCCESS or error code */ + undo_node_t* node, /* in: row undo node */ + que_thr_t* thr) /* in: query thread */ +{ + ulint err; + + ut_ad(node && thr); + ut_ad(node->state == UNDO_NODE_MODIFY); + + row_undo_mod_parse_undo_rec(node, thr); + + if (!node->table || !row_undo_search_clust_to_pcur(node)) { + /* It is already undone, or will be undone by another query + thread, or table was dropped */ + + trx_undo_rec_release(node->trx, node->undo_no); + node->state = UNDO_NODE_FETCH_NEXT; + + return(DB_SUCCESS); + } + + node->index = dict_table_get_next_index( + dict_table_get_first_index(node->table)); + + if (node->rec_type == TRX_UNDO_UPD_EXIST_REC) { + + err = row_undo_mod_upd_exist_sec(node, thr); + + } else if (node->rec_type == TRX_UNDO_DEL_MARK_REC) { + + err = row_undo_mod_del_mark_sec(node, thr); + } else { + ut_ad(node->rec_type == TRX_UNDO_UPD_DEL_REC); + err = row_undo_mod_upd_del_sec(node, thr); + } + + if (err != DB_SUCCESS) { + + return(err); + } + + err = row_undo_mod_clust(node, thr); + + return(err); +} === added file 'storage/xtradb/row/row0undo.c' --- a/storage/xtradb/row/row0undo.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/row/row0undo.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,378 @@ +/***************************************************************************** + +Copyright (c) 1997, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Row undo + +Created 1/8/1997 Heikki Tuuri +*******************************************************/ + +#include "row0undo.h" + +#ifdef UNIV_NONINL +#include "row0undo.ic" +#endif + +#include "fsp0fsp.h" +#include "mach0data.h" +#include "trx0rseg.h" +#include "trx0trx.h" +#include "trx0roll.h" +#include "trx0undo.h" +#include "trx0purge.h" +#include "trx0rec.h" +#include "que0que.h" +#include "row0row.h" +#include "row0uins.h" +#include "row0umod.h" +#include "row0upd.h" +#include "row0mysql.h" +#include "srv0srv.h" + +/* How to undo row operations? +(1) For an insert, we have stored a prefix of the clustered index record +in the undo log. Using it, we look for the clustered record, and using +that we look for the records in the secondary indexes. The insert operation +may have been left incomplete, if the database crashed, for example. +We may have look at the trx id and roll ptr to make sure the record in the +clustered index is really the one for which the undo log record was +written. We can use the framework we get from the original insert op. +(2) Delete marking: We can use the framework we get from the original +delete mark op. We only have to check the trx id. +(3) Update: This may be the most complicated. We have to use the framework +we get from the original update op. + +What if the same trx repeatedly deletes and inserts an identical row. +Then the row id changes and also roll ptr. What if the row id was not +part of the ordering fields in the clustered index? Maybe we have to write +it to undo log. Well, maybe not, because if we order the row id and trx id +in descending order, then the only undeleted copy is the first in the +index. Our searches in row operations always position the cursor before +the first record in the result set. But, if there is no key defined for +a table, then it would be desirable that row id is in ascending order. +So, lets store row id in descending order only if it is not an ordering +field in the clustered index. + +NOTE: Deletes and inserts may lead to situation where there are identical +records in a secondary index. Is that a problem in the B-tree? Yes. +Also updates can lead to this, unless trx id and roll ptr are included in +ord fields. +(1) Fix in clustered indexes: include row id, trx id, and roll ptr +in node pointers of B-tree. +(2) Fix in secondary indexes: include all fields in node pointers, and +if an entry is inserted, check if it is equal to the right neighbor, +in which case update the right neighbor: the neighbor must be delete +marked, set it unmarked and write the trx id of the current transaction. + +What if the same trx repeatedly updates the same row, updating a secondary +index field or not? Updating a clustered index ordering field? + +(1) If it does not update the secondary index and not the clustered index +ord field. Then the secondary index record stays unchanged, but the +trx id in the secondary index record may be smaller than in the clustered +index record. This is no problem? +(2) If it updates secondary index ord field but not clustered: then in +secondary index there are delete marked records, which differ in an +ord field. No problem. +(3) Updates clustered ord field but not secondary, and secondary index +is unique. Then the record in secondary index is just updated at the +clustered ord field. +(4) + +Problem with duplicate records: +Fix 1: Add a trx op no field to all indexes. A problem: if a trx with a +bigger trx id has inserted and delete marked a similar row, our trx inserts +again a similar row, and a trx with an even bigger id delete marks it. Then +the position of the row should change in the index if the trx id affects +the alphabetical ordering. + +Fix 2: If an insert encounters a similar row marked deleted, we turn the +insert into an 'update' of the row marked deleted. Then we must write undo +info on the update. A problem: what if a purge operation tries to remove +the delete marked row? + +We can think of the database row versions as a linked list which starts +from the record in the clustered index, and is linked by roll ptrs +through undo logs. The secondary index records are references which tell +what kinds of records can be found in this linked list for a record +in the clustered index. + +How to do the purge? A record can be removed from the clustered index +if its linked list becomes empty, i.e., the row has been marked deleted +and its roll ptr points to the record in the undo log we are going through, +doing the purge. Similarly, during a rollback, a record can be removed +if the stored roll ptr in the undo log points to a trx already (being) purged, +or if the roll ptr is NULL, i.e., it was a fresh insert. */ + +/************************************************************************ +Creates a row undo node to a query graph. */ +UNIV_INTERN +undo_node_t* +row_undo_node_create( +/*=================*/ + /* out, own: undo node */ + trx_t* trx, /* in: transaction */ + que_thr_t* parent, /* in: parent node, i.e., a thr node */ + mem_heap_t* heap) /* in: memory heap where created */ +{ + undo_node_t* undo; + + ut_ad(trx && parent && heap); + + undo = mem_heap_alloc(heap, sizeof(undo_node_t)); + + undo->common.type = QUE_NODE_UNDO; + undo->common.parent = parent; + + undo->state = UNDO_NODE_FETCH_NEXT; + undo->trx = trx; + + btr_pcur_init(&(undo->pcur)); + + undo->heap = mem_heap_create(256); + + return(undo); +} + +/*************************************************************** +Looks for the clustered index record when node has the row reference. +The pcur in node is used in the search. If found, stores the row to node, +and stores the position of pcur, and detaches it. The pcur must be closed +by the caller in any case. */ +UNIV_INTERN +ibool +row_undo_search_clust_to_pcur( +/*==========================*/ + /* out: TRUE if found; NOTE the node->pcur + must be closed by the caller, regardless of + the return value */ + undo_node_t* node) /* in: row undo node */ +{ + dict_index_t* clust_index; + ibool found; + mtr_t mtr; + ibool ret; + rec_t* rec; + mem_heap_t* heap = NULL; + ulint offsets_[REC_OFFS_NORMAL_SIZE]; + ulint* offsets = offsets_; + rec_offs_init(offsets_); + + mtr_start(&mtr); + + clust_index = dict_table_get_first_index(node->table); + + found = row_search_on_row_ref(&(node->pcur), BTR_MODIFY_LEAF, + node->table, node->ref, &mtr); + + rec = btr_pcur_get_rec(&(node->pcur)); + + offsets = rec_get_offsets(rec, clust_index, offsets, + ULINT_UNDEFINED, &heap); + + if (!found || 0 != ut_dulint_cmp(node->roll_ptr, + row_get_rec_roll_ptr(rec, clust_index, + offsets))) { + + /* We must remove the reservation on the undo log record + BEFORE releasing the latch on the clustered index page: this + is to make sure that some thread will eventually undo the + modification corresponding to node->roll_ptr. */ + + /* fputs("--------------------undoing a previous version\n", + stderr); */ + + ret = FALSE; + } else { + node->row = row_build(ROW_COPY_DATA, clust_index, rec, + offsets, NULL, &node->ext, node->heap); + if (node->update) { + node->undo_row = dtuple_copy(node->row, node->heap); + row_upd_replace(node->undo_row, &node->undo_ext, + clust_index, node->update, node->heap); + } else { + node->undo_row = NULL; + node->undo_ext = NULL; + } + + btr_pcur_store_position(&(node->pcur), &mtr); + + ret = TRUE; + } + + btr_pcur_commit_specify_mtr(&(node->pcur), &mtr); + + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } + return(ret); +} + +/*************************************************************** +Fetches an undo log record and does the undo for the recorded operation. +If none left, or a partial rollback completed, returns control to the +parent node, which is always a query thread node. */ +static +ulint +row_undo( +/*=====*/ + /* out: DB_SUCCESS if operation successfully + completed, else error code */ + undo_node_t* node, /* in: row undo node */ + que_thr_t* thr) /* in: query thread */ +{ + ulint err; + trx_t* trx; + dulint roll_ptr; + ibool locked_data_dict; + + ut_ad(node && thr); + + trx = node->trx; + + if (node->state == UNDO_NODE_FETCH_NEXT) { + + node->undo_rec = trx_roll_pop_top_rec_of_trx(trx, + trx->roll_limit, + &roll_ptr, + node->heap); + if (!node->undo_rec) { + /* Rollback completed for this query thread */ + + thr->run_node = que_node_get_parent(node); + + return(DB_SUCCESS); + } + + node->roll_ptr = roll_ptr; + node->undo_no = trx_undo_rec_get_undo_no(node->undo_rec); + + if (trx_undo_roll_ptr_is_insert(roll_ptr)) { + + node->state = UNDO_NODE_INSERT; + } else { + node->state = UNDO_NODE_MODIFY; + } + + } else if (node->state == UNDO_NODE_PREV_VERS) { + + /* Undo should be done to the same clustered index record + again in this same rollback, restoring the previous version */ + + roll_ptr = node->new_roll_ptr; + + node->undo_rec = trx_undo_get_undo_rec_low(roll_ptr, + node->heap); + node->roll_ptr = roll_ptr; + node->undo_no = trx_undo_rec_get_undo_no(node->undo_rec); + + if (trx_undo_roll_ptr_is_insert(roll_ptr)) { + + node->state = UNDO_NODE_INSERT; + } else { + node->state = UNDO_NODE_MODIFY; + } + } + + /* Prevent DROP TABLE etc. while we are rolling back this row. + If we are doing a TABLE CREATE or some other dictionary operation, + then we already have dict_operation_lock locked in x-mode. Do not + try to lock again, because that would cause a hang. */ + + locked_data_dict = (trx->dict_operation_lock_mode == 0); + + if (locked_data_dict) { + + row_mysql_lock_data_dictionary(trx); + } + + if (node->state == UNDO_NODE_INSERT) { + + err = row_undo_ins(node); + + node->state = UNDO_NODE_FETCH_NEXT; + } else { + ut_ad(node->state == UNDO_NODE_MODIFY); + err = row_undo_mod(node, thr); + } + + if (locked_data_dict) { + + row_mysql_unlock_data_dictionary(trx); + } + + /* Do some cleanup */ + btr_pcur_close(&(node->pcur)); + + mem_heap_empty(node->heap); + + thr->run_node = node; + + return(err); +} + +/*************************************************************** +Undoes a row operation in a table. This is a high-level function used +in SQL execution graphs. */ +UNIV_INTERN +que_thr_t* +row_undo_step( +/*==========*/ + /* out: query thread to run next or NULL */ + que_thr_t* thr) /* in: query thread */ +{ + ulint err; + undo_node_t* node; + trx_t* trx; + + ut_ad(thr); + + srv_activity_count++; + + trx = thr_get_trx(thr); + + node = thr->run_node; + + ut_ad(que_node_get_type(node) == QUE_NODE_UNDO); + + err = row_undo(node, thr); + + trx->error_state = err; + + if (err != DB_SUCCESS) { + /* SQL error detected */ + + fprintf(stderr, "InnoDB: Fatal error %lu in rollback.\n", + (ulong) err); + + if (err == DB_OUT_OF_FILE_SPACE) { + fprintf(stderr, + "InnoDB: Error 13 means out of tablespace.\n" + "InnoDB: Consider increasing" + " your tablespace.\n"); + + exit(1); + } + + ut_error; + + return(NULL); + } + + return(thr); +} === added file 'storage/xtradb/row/row0upd.c' --- a/storage/xtradb/row/row0upd.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/row/row0upd.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,2168 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Update of a row + +Created 12/27/1996 Heikki Tuuri +*******************************************************/ + +#include "row0upd.h" + +#ifdef UNIV_NONINL +#include "row0upd.ic" +#endif + +#include "dict0dict.h" +#include "dict0boot.h" +#include "dict0crea.h" +#include "mach0data.h" +#include "trx0undo.h" +#include "btr0btr.h" +#include "btr0cur.h" +#include "que0que.h" +#include "row0ext.h" +#include "row0ins.h" +#include "row0sel.h" +#include "row0row.h" +#include "rem0cmp.h" +#include "lock0lock.h" +#include "log0log.h" +#include "pars0sym.h" +#include "eval0eval.h" +#include "buf0lru.h" + + +/* What kind of latch and lock can we assume when the control comes to + ------------------------------------------------------------------- +an update node? +-------------- +Efficiency of massive updates would require keeping an x-latch on a +clustered index page through many updates, and not setting an explicit +x-lock on clustered index records, as they anyway will get an implicit +x-lock when they are updated. A problem is that the read nodes in the +graph should know that they must keep the latch when passing the control +up to the update node, and not set any record lock on the record which +will be updated. Another problem occurs if the execution is stopped, +as the kernel switches to another query thread, or the transaction must +wait for a lock. Then we should be able to release the latch and, maybe, +acquire an explicit x-lock on the record. + Because this seems too complicated, we conclude that the less +efficient solution of releasing all the latches when the control is +transferred to another node, and acquiring explicit x-locks, is better. */ + +/* How is a delete performed? If there is a delete without an +explicit cursor, i.e., a searched delete, there are at least +two different situations: +the implicit select cursor may run on (1) the clustered index or +on (2) a secondary index. The delete is performed by setting +the delete bit in the record and substituting the id of the +deleting transaction for the original trx id, and substituting a +new roll ptr for previous roll ptr. The old trx id and roll ptr +are saved in the undo log record. Thus, no physical changes occur +in the index tree structure at the time of the delete. Only +when the undo log is purged, the index records will be physically +deleted from the index trees. + +The query graph executing a searched delete would consist of +a delete node which has as a subtree a select subgraph. +The select subgraph should return a (persistent) cursor +in the clustered index, placed on page which is x-latched. +The delete node should look for all secondary index records for +this clustered index entry and mark them as deleted. When is +the x-latch freed? The most efficient way for performing a +searched delete is obviously to keep the x-latch for several +steps of query graph execution. */ + +/*************************************************************** +Checks if an update vector changes some of the first ordering fields of an +index record. This is only used in foreign key checks and we can assume +that index does not contain column prefixes. */ +static +ibool +row_upd_changes_first_fields_binary( +/*================================*/ + /* out: TRUE if changes */ + dtuple_t* entry, /* in: old value of index entry */ + dict_index_t* index, /* in: index of entry */ + const upd_t* update, /* in: update vector for the row */ + ulint n); /* in: how many first fields to check */ + + +/************************************************************************* +Checks if index currently is mentioned as a referenced index in a foreign +key constraint. */ +static +ibool +row_upd_index_is_referenced( +/*========================*/ + /* out: TRUE if referenced; NOTE that since + we do not hold dict_operation_lock + when leaving the function, it may be that + the referencing table has been dropped when + we leave this function: this function is only + for heuristic use! */ + dict_index_t* index, /* in: index */ + trx_t* trx) /* in: transaction */ +{ + dict_table_t* table = index->table; + dict_foreign_t* foreign; + ibool froze_data_dict = FALSE; + ibool is_referenced = FALSE; + + if (!UT_LIST_GET_FIRST(table->referenced_list)) { + + return(FALSE); + } + + if (trx->dict_operation_lock_mode == 0) { + row_mysql_freeze_data_dictionary(trx); + froze_data_dict = TRUE; + } + + foreign = UT_LIST_GET_FIRST(table->referenced_list); + + while (foreign) { + if (foreign->referenced_index == index) { + + is_referenced = TRUE; + goto func_exit; + } + + foreign = UT_LIST_GET_NEXT(referenced_list, foreign); + } + +func_exit: + if (froze_data_dict) { + row_mysql_unfreeze_data_dictionary(trx); + } + + return(is_referenced); +} + +/************************************************************************* +Checks if possible foreign key constraints hold after a delete of the record +under pcur. NOTE that this function will temporarily commit mtr and lose the +pcur position! */ +static +ulint +row_upd_check_references_constraints( +/*=================================*/ + /* out: DB_SUCCESS or an error code */ + upd_node_t* node, /* in: row update node */ + btr_pcur_t* pcur, /* in: cursor positioned on a record; NOTE: the + cursor position is lost in this function! */ + dict_table_t* table, /* in: table in question */ + dict_index_t* index, /* in: index of the cursor */ + ulint* offsets,/* in/out: rec_get_offsets(pcur.rec, index) */ + que_thr_t* thr, /* in: query thread */ + mtr_t* mtr) /* in: mtr */ +{ + dict_foreign_t* foreign; + mem_heap_t* heap; + dtuple_t* entry; + trx_t* trx; + const rec_t* rec; + ulint n_ext; + ulint err; + ibool got_s_lock = FALSE; + + if (UT_LIST_GET_FIRST(table->referenced_list) == NULL) { + + return(DB_SUCCESS); + } + + trx = thr_get_trx(thr); + + rec = btr_pcur_get_rec(pcur); + ut_ad(rec_offs_validate(rec, index, offsets)); + + heap = mem_heap_create(500); + + entry = row_rec_to_index_entry(ROW_COPY_DATA, rec, index, offsets, + &n_ext, heap); + + mtr_commit(mtr); + + mtr_start(mtr); + + if (trx->dict_operation_lock_mode == 0) { + got_s_lock = TRUE; + + row_mysql_freeze_data_dictionary(trx); + } + + foreign = UT_LIST_GET_FIRST(table->referenced_list); + + while (foreign) { + /* Note that we may have an update which updates the index + record, but does NOT update the first fields which are + referenced in a foreign key constraint. Then the update does + NOT break the constraint. */ + + if (foreign->referenced_index == index + && (node->is_delete + || row_upd_changes_first_fields_binary( + entry, index, node->update, + foreign->n_fields))) { + + if (foreign->foreign_table == NULL) { + dict_table_get(foreign->foreign_table_name, + FALSE); + } + + if (foreign->foreign_table) { + mutex_enter(&(dict_sys->mutex)); + + (foreign->foreign_table + ->n_foreign_key_checks_running)++; + + mutex_exit(&(dict_sys->mutex)); + } + + /* NOTE that if the thread ends up waiting for a lock + we will release dict_operation_lock temporarily! + But the counter on the table protects 'foreign' from + being dropped while the check is running. */ + + err = row_ins_check_foreign_constraint( + FALSE, foreign, table, entry, thr); + + if (foreign->foreign_table) { + mutex_enter(&(dict_sys->mutex)); + + ut_a(foreign->foreign_table + ->n_foreign_key_checks_running > 0); + + (foreign->foreign_table + ->n_foreign_key_checks_running)--; + + mutex_exit(&(dict_sys->mutex)); + } + + if (err != DB_SUCCESS) { + + goto func_exit; + } + } + + foreign = UT_LIST_GET_NEXT(referenced_list, foreign); + } + + err = DB_SUCCESS; + +func_exit: + if (got_s_lock) { + row_mysql_unfreeze_data_dictionary(trx); + } + + mem_heap_free(heap); + + return(err); +} + +/************************************************************************* +Creates an update node for a query graph. */ +UNIV_INTERN +upd_node_t* +upd_node_create( +/*============*/ + /* out, own: update node */ + mem_heap_t* heap) /* in: mem heap where created */ +{ + upd_node_t* node; + + node = mem_heap_alloc(heap, sizeof(upd_node_t)); + node->common.type = QUE_NODE_UPDATE; + + node->state = UPD_NODE_UPDATE_CLUSTERED; + node->in_mysql_interface = FALSE; + + node->row = NULL; + node->ext = NULL; + node->upd_row = NULL; + node->upd_ext = NULL; + node->index = NULL; + node->update = NULL; + + node->foreign = NULL; + node->cascade_heap = NULL; + node->cascade_node = NULL; + + node->select = NULL; + + node->heap = mem_heap_create(128); + node->magic_n = UPD_NODE_MAGIC_N; + + node->cmpl_info = 0; + + return(node); +} + +/************************************************************************* +Updates the trx id and roll ptr field in a clustered index record in database +recovery. */ +UNIV_INTERN +void +row_upd_rec_sys_fields_in_recovery( +/*===============================*/ + rec_t* rec, /* in/out: record */ + page_zip_des_t* page_zip,/* in/out: compressed page, or NULL */ + const ulint* offsets,/* in: array returned by rec_get_offsets() */ + ulint pos, /* in: TRX_ID position in rec */ + dulint trx_id, /* in: transaction id */ + dulint roll_ptr)/* in: roll ptr of the undo log record */ +{ + ut_ad(rec_offs_validate(rec, NULL, offsets)); + + if (UNIV_LIKELY_NULL(page_zip)) { + page_zip_write_trx_id_and_roll_ptr( + page_zip, rec, offsets, pos, trx_id, roll_ptr); + } else { + byte* field; + ulint len; + + field = rec_get_nth_field(rec, offsets, pos, &len); + ut_ad(len == DATA_TRX_ID_LEN); +#if DATA_TRX_ID + 1 != DATA_ROLL_PTR +# error "DATA_TRX_ID + 1 != DATA_ROLL_PTR" +#endif + trx_write_trx_id(field, trx_id); + trx_write_roll_ptr(field + DATA_TRX_ID_LEN, roll_ptr); + } +} + +/************************************************************************* +Sets the trx id or roll ptr field of a clustered index entry. */ +UNIV_INTERN +void +row_upd_index_entry_sys_field( +/*==========================*/ + const dtuple_t* entry, /* in: index entry, where the memory buffers + for sys fields are already allocated: + the function just copies the new values to + them */ + dict_index_t* index, /* in: clustered index */ + ulint type, /* in: DATA_TRX_ID or DATA_ROLL_PTR */ + dulint val) /* in: value to write */ +{ + dfield_t* dfield; + byte* field; + ulint pos; + + ut_ad(dict_index_is_clust(index)); + + pos = dict_index_get_sys_col_pos(index, type); + + dfield = dtuple_get_nth_field(entry, pos); + field = dfield_get_data(dfield); + + if (type == DATA_TRX_ID) { + trx_write_trx_id(field, val); + } else { + ut_ad(type == DATA_ROLL_PTR); + trx_write_roll_ptr(field, val); + } +} + +/*************************************************************** +Returns TRUE if row update changes size of some field in index or if some +field to be updated is stored externally in rec or update. */ +UNIV_INTERN +ibool +row_upd_changes_field_size_or_external( +/*===================================*/ + /* out: TRUE if the update changes the size of + some field in index or the field is external + in rec or update */ + dict_index_t* index, /* in: index */ + const ulint* offsets,/* in: rec_get_offsets(rec, index) */ + const upd_t* update) /* in: update vector */ +{ + const upd_field_t* upd_field; + const dfield_t* new_val; + ulint old_len; + ulint new_len; + ulint n_fields; + ulint i; + + ut_ad(rec_offs_validate(NULL, index, offsets)); + n_fields = upd_get_n_fields(update); + + for (i = 0; i < n_fields; i++) { + upd_field = upd_get_nth_field(update, i); + + new_val = &(upd_field->new_val); + new_len = dfield_get_len(new_val); + + if (dfield_is_null(new_val) && !rec_offs_comp(offsets)) { + /* A bug fixed on Dec 31st, 2004: we looked at the + SQL NULL size from the wrong field! We may backport + this fix also to 4.0. The merge to 5.0 will be made + manually immediately after we commit this to 4.1. */ + + new_len = dict_col_get_sql_null_size( + dict_index_get_nth_col(index, + upd_field->field_no)); + } + + old_len = rec_offs_nth_size(offsets, upd_field->field_no); + + if (rec_offs_comp(offsets) + && rec_offs_nth_sql_null(offsets, + upd_field->field_no)) { + /* Note that in the compact table format, for a + variable length field, an SQL NULL will use zero + bytes in the offset array at the start of the physical + record, but a zero-length value (empty string) will + use one byte! Thus, we cannot use update-in-place + if we update an SQL NULL varchar to an empty string! */ + + old_len = UNIV_SQL_NULL; + } + + if (dfield_is_ext(new_val) || old_len != new_len + || rec_offs_nth_extern(offsets, upd_field->field_no)) { + + return(TRUE); + } + } + + return(FALSE); +} + +/*************************************************************** +Replaces the new column values stored in the update vector to the record +given. No field size changes are allowed. */ +UNIV_INTERN +void +row_upd_rec_in_place( +/*=================*/ + rec_t* rec, /* in/out: record where replaced */ + dict_index_t* index, /* in: the index the record belongs to */ + const ulint* offsets,/* in: array returned by rec_get_offsets() */ + const upd_t* update, /* in: update vector */ + page_zip_des_t* page_zip)/* in: compressed page with enough space + available, or NULL */ +{ + const upd_field_t* upd_field; + const dfield_t* new_val; + ulint n_fields; + ulint i; + + ut_ad(rec_offs_validate(rec, index, offsets)); + + if (rec_offs_comp(offsets)) { + rec_set_info_bits_new(rec, update->info_bits); + } else { + rec_set_info_bits_old(rec, update->info_bits); + } + + n_fields = upd_get_n_fields(update); + + for (i = 0; i < n_fields; i++) { + upd_field = upd_get_nth_field(update, i); + new_val = &(upd_field->new_val); + ut_ad(!dfield_is_ext(new_val) == + !rec_offs_nth_extern(offsets, upd_field->field_no)); + + rec_set_nth_field(rec, offsets, upd_field->field_no, + dfield_get_data(new_val), + dfield_get_len(new_val)); + } + + if (UNIV_LIKELY_NULL(page_zip)) { + page_zip_write_rec(page_zip, rec, index, offsets, 0); + } +} + +/************************************************************************* +Writes into the redo log the values of trx id and roll ptr and enough info +to determine their positions within a clustered index record. */ +UNIV_INTERN +byte* +row_upd_write_sys_vals_to_log( +/*==========================*/ + /* out: new pointer to mlog */ + dict_index_t* index, /* in: clustered index */ + trx_t* trx, /* in: transaction */ + dulint roll_ptr,/* in: roll ptr of the undo log record */ + byte* log_ptr,/* pointer to a buffer of size > 20 opened + in mlog */ + mtr_t* mtr __attribute__((unused))) /* in: mtr */ +{ + ut_ad(dict_index_is_clust(index)); + ut_ad(mtr); + + log_ptr += mach_write_compressed(log_ptr, + dict_index_get_sys_col_pos( + index, DATA_TRX_ID)); + + trx_write_roll_ptr(log_ptr, roll_ptr); + log_ptr += DATA_ROLL_PTR_LEN; + + log_ptr += mach_dulint_write_compressed(log_ptr, trx->id); + + return(log_ptr); +} + +/************************************************************************* +Parses the log data of system field values. */ +UNIV_INTERN +byte* +row_upd_parse_sys_vals( +/*===================*/ + /* out: log data end or NULL */ + byte* ptr, /* in: buffer */ + byte* end_ptr,/* in: buffer end */ + ulint* pos, /* out: TRX_ID position in record */ + dulint* trx_id, /* out: trx id */ + dulint* roll_ptr)/* out: roll ptr */ +{ + ptr = mach_parse_compressed(ptr, end_ptr, pos); + + if (ptr == NULL) { + + return(NULL); + } + + if (end_ptr < ptr + DATA_ROLL_PTR_LEN) { + + return(NULL); + } + + *roll_ptr = trx_read_roll_ptr(ptr); + ptr += DATA_ROLL_PTR_LEN; + + ptr = mach_dulint_parse_compressed(ptr, end_ptr, trx_id); + + return(ptr); +} + +/*************************************************************** +Writes to the redo log the new values of the fields occurring in the index. */ +UNIV_INTERN +void +row_upd_index_write_log( +/*====================*/ + const upd_t* update, /* in: update vector */ + byte* log_ptr,/* in: pointer to mlog buffer: must + contain at least MLOG_BUF_MARGIN bytes + of free space; the buffer is closed + within this function */ + mtr_t* mtr) /* in: mtr into whose log to write */ +{ + const upd_field_t* upd_field; + const dfield_t* new_val; + ulint len; + ulint n_fields; + byte* buf_end; + ulint i; + + n_fields = upd_get_n_fields(update); + + buf_end = log_ptr + MLOG_BUF_MARGIN; + + mach_write_to_1(log_ptr, update->info_bits); + log_ptr++; + log_ptr += mach_write_compressed(log_ptr, n_fields); + + for (i = 0; i < n_fields; i++) { + +#if MLOG_BUF_MARGIN <= 30 +# error "MLOG_BUF_MARGIN <= 30" +#endif + + if (log_ptr + 30 > buf_end) { + mlog_close(mtr, log_ptr); + + log_ptr = mlog_open(mtr, MLOG_BUF_MARGIN); + buf_end = log_ptr + MLOG_BUF_MARGIN; + } + + upd_field = upd_get_nth_field(update, i); + + new_val = &(upd_field->new_val); + + len = dfield_get_len(new_val); + + log_ptr += mach_write_compressed(log_ptr, upd_field->field_no); + log_ptr += mach_write_compressed(log_ptr, len); + + if (len != UNIV_SQL_NULL) { + if (log_ptr + len < buf_end) { + memcpy(log_ptr, dfield_get_data(new_val), len); + + log_ptr += len; + } else { + mlog_close(mtr, log_ptr); + + mlog_catenate_string(mtr, + dfield_get_data(new_val), + len); + + log_ptr = mlog_open(mtr, MLOG_BUF_MARGIN); + buf_end = log_ptr + MLOG_BUF_MARGIN; + } + } + } + + mlog_close(mtr, log_ptr); +} + +/************************************************************************* +Parses the log data written by row_upd_index_write_log. */ +UNIV_INTERN +byte* +row_upd_index_parse( +/*================*/ + /* out: log data end or NULL */ + byte* ptr, /* in: buffer */ + byte* end_ptr,/* in: buffer end */ + mem_heap_t* heap, /* in: memory heap where update vector is + built */ + upd_t** update_out)/* out: update vector */ +{ + upd_t* update; + upd_field_t* upd_field; + dfield_t* new_val; + ulint len; + ulint n_fields; + ulint info_bits; + ulint i; + + if (end_ptr < ptr + 1) { + + return(NULL); + } + + info_bits = mach_read_from_1(ptr); + ptr++; + ptr = mach_parse_compressed(ptr, end_ptr, &n_fields); + + if (ptr == NULL) { + + return(NULL); + } + + update = upd_create(n_fields, heap); + update->info_bits = info_bits; + + for (i = 0; i < n_fields; i++) { + ulint field_no; + upd_field = upd_get_nth_field(update, i); + new_val = &(upd_field->new_val); + + ptr = mach_parse_compressed(ptr, end_ptr, &field_no); + + if (ptr == NULL) { + + return(NULL); + } + + upd_field->field_no = field_no; + + ptr = mach_parse_compressed(ptr, end_ptr, &len); + + if (ptr == NULL) { + + return(NULL); + } + + if (len != UNIV_SQL_NULL) { + + if (end_ptr < ptr + len) { + + return(NULL); + } + + dfield_set_data(new_val, + mem_heap_dup(heap, ptr, len), len); + ptr += len; + } else { + dfield_set_null(new_val); + } + } + + *update_out = update; + + return(ptr); +} + +/******************************************************************* +Builds an update vector from those fields which in a secondary index entry +differ from a record that has the equal ordering fields. NOTE: we compare +the fields as binary strings! */ +UNIV_INTERN +upd_t* +row_upd_build_sec_rec_difference_binary( +/*====================================*/ + /* out, own: update vector of differing + fields */ + dict_index_t* index, /* in: index */ + const dtuple_t* entry, /* in: entry to insert */ + const rec_t* rec, /* in: secondary index record */ + trx_t* trx, /* in: transaction */ + mem_heap_t* heap) /* in: memory heap from which allocated */ +{ + upd_field_t* upd_field; + const dfield_t* dfield; + const byte* data; + ulint len; + upd_t* update; + ulint n_diff; + ulint i; + ulint offsets_[REC_OFFS_SMALL_SIZE]; + const ulint* offsets; + rec_offs_init(offsets_); + + /* This function is used only for a secondary index */ + ut_a(!dict_index_is_clust(index)); + + update = upd_create(dtuple_get_n_fields(entry), heap); + + n_diff = 0; + offsets = rec_get_offsets(rec, index, offsets_, + ULINT_UNDEFINED, &heap); + + for (i = 0; i < dtuple_get_n_fields(entry); i++) { + + data = rec_get_nth_field(rec, offsets, i, &len); + + dfield = dtuple_get_nth_field(entry, i); + + /* NOTE that it may be that len != dfield_get_len(dfield) if we + are updating in a character set and collation where strings of + different length can be equal in an alphabetical comparison, + and also in the case where we have a column prefix index + and the last characters in the index field are spaces; the + latter case probably caused the assertion failures reported at + row0upd.c line 713 in versions 4.0.14 - 4.0.16. */ + + /* NOTE: we compare the fields as binary strings! + (No collation) */ + + if (!dfield_data_is_binary_equal(dfield, len, data)) { + + upd_field = upd_get_nth_field(update, n_diff); + + dfield_copy(&(upd_field->new_val), dfield); + + upd_field_set_field_no(upd_field, i, index, trx); + + n_diff++; + } + } + + update->n_fields = n_diff; + + return(update); +} + +/******************************************************************* +Builds an update vector from those fields, excluding the roll ptr and +trx id fields, which in an index entry differ from a record that has +the equal ordering fields. NOTE: we compare the fields as binary strings! */ +UNIV_INTERN +upd_t* +row_upd_build_difference_binary( +/*============================*/ + /* out, own: update vector of differing + fields, excluding roll ptr and trx id */ + dict_index_t* index, /* in: clustered index */ + const dtuple_t* entry, /* in: entry to insert */ + const rec_t* rec, /* in: clustered index record */ + trx_t* trx, /* in: transaction */ + mem_heap_t* heap) /* in: memory heap from which allocated */ +{ + upd_field_t* upd_field; + const dfield_t* dfield; + const byte* data; + ulint len; + upd_t* update; + ulint n_diff; + ulint roll_ptr_pos; + ulint trx_id_pos; + ulint i; + ulint offsets_[REC_OFFS_NORMAL_SIZE]; + const ulint* offsets; + rec_offs_init(offsets_); + + /* This function is used only for a clustered index */ + ut_a(dict_index_is_clust(index)); + + update = upd_create(dtuple_get_n_fields(entry), heap); + + n_diff = 0; + + roll_ptr_pos = dict_index_get_sys_col_pos(index, DATA_ROLL_PTR); + trx_id_pos = dict_index_get_sys_col_pos(index, DATA_TRX_ID); + + offsets = rec_get_offsets(rec, index, offsets_, + ULINT_UNDEFINED, &heap); + + for (i = 0; i < dtuple_get_n_fields(entry); i++) { + + data = rec_get_nth_field(rec, offsets, i, &len); + + dfield = dtuple_get_nth_field(entry, i); + + /* NOTE: we compare the fields as binary strings! + (No collation) */ + + if (i == trx_id_pos || i == roll_ptr_pos) { + + goto skip_compare; + } + + if (UNIV_UNLIKELY(!dfield_is_ext(dfield) + != !rec_offs_nth_extern(offsets, i)) + || !dfield_data_is_binary_equal(dfield, len, data)) { + + upd_field = upd_get_nth_field(update, n_diff); + + dfield_copy(&(upd_field->new_val), dfield); + + upd_field_set_field_no(upd_field, i, index, trx); + + n_diff++; + } +skip_compare: + ; + } + + update->n_fields = n_diff; + + return(update); +} + +/*************************************************************** +Fetch a prefix of an externally stored column. This is similar +to row_ext_lookup(), but the row_ext_t holds the old values +of the column and must not be poisoned with the new values. */ +static +byte* +row_upd_ext_fetch( +/*==============*/ + /* out: BLOB prefix */ + const byte* data, /* in: 'internally' stored part of the + field containing also the reference to + the external part */ + ulint local_len, /* in: length of data, in bytes */ + ulint zip_size, /* in: nonzero=compressed BLOB + page size, zero for uncompressed + BLOBs */ + ulint* len, /* in: length of prefix to fetch; + out: fetched length of the prefix */ + mem_heap_t* heap) /* in: heap where to allocate */ +{ + byte* buf = mem_heap_alloc(heap, *len); + + *len = btr_copy_externally_stored_field_prefix(buf, *len, + zip_size, + data, local_len); + /* We should never update records containing a half-deleted BLOB. */ + ut_a(*len); + + return(buf); +} + +/*************************************************************** +Replaces the new column value stored in the update vector in +the given index entry field. */ +static +void +row_upd_index_replace_new_col_val( +/*==============================*/ + dfield_t* dfield, /* in/out: data field + of the index entry */ + const dict_field_t* field, /* in: index field */ + const dict_col_t* col, /* in: field->col */ + const upd_field_t* uf, /* in: update field */ + mem_heap_t* heap, /* in: memory heap for allocating + and copying the new value */ + ulint zip_size)/* in: compressed page + size of the table, or 0 */ +{ + ulint len; + const byte* data; + + dfield_copy_data(dfield, &uf->new_val); + + if (dfield_is_null(dfield)) { + return; + } + + len = dfield_get_len(dfield); + data = dfield_get_data(dfield); + + if (field->prefix_len > 0) { + ibool fetch_ext = dfield_is_ext(dfield) + && len < (ulint) field->prefix_len + + BTR_EXTERN_FIELD_REF_SIZE; + + if (fetch_ext) { + ulint l = len; + + len = field->prefix_len; + + data = row_upd_ext_fetch(data, l, zip_size, + &len, heap); + } + + len = dtype_get_at_most_n_mbchars(col->prtype, + col->mbminlen, col->mbmaxlen, + field->prefix_len, len, + (const char*) data); + + dfield_set_data(dfield, data, len); + + if (!fetch_ext) { + dfield_dup(dfield, heap); + } + + return; + } + + switch (uf->orig_len) { + byte* buf; + case BTR_EXTERN_FIELD_REF_SIZE: + /* Restore the original locally stored + part of the column. In the undo log, + InnoDB writes a longer prefix of externally + stored columns, so that column prefixes + in secondary indexes can be reconstructed. */ + dfield_set_data(dfield, + data + len - BTR_EXTERN_FIELD_REF_SIZE, + BTR_EXTERN_FIELD_REF_SIZE); + dfield_set_ext(dfield); + /* fall through */ + case 0: + dfield_dup(dfield, heap); + break; + default: + /* Reconstruct the original locally + stored part of the column. The data + will have to be copied. */ + ut_a(uf->orig_len > BTR_EXTERN_FIELD_REF_SIZE); + buf = mem_heap_alloc(heap, uf->orig_len); + /* Copy the locally stored prefix. */ + memcpy(buf, data, + uf->orig_len - BTR_EXTERN_FIELD_REF_SIZE); + /* Copy the BLOB pointer. */ + memcpy(buf + uf->orig_len - BTR_EXTERN_FIELD_REF_SIZE, + data + len - BTR_EXTERN_FIELD_REF_SIZE, + BTR_EXTERN_FIELD_REF_SIZE); + + dfield_set_data(dfield, buf, uf->orig_len); + dfield_set_ext(dfield); + break; + } +} + +/*************************************************************** +Replaces the new column values stored in the update vector to the index entry +given. */ +UNIV_INTERN +void +row_upd_index_replace_new_col_vals_index_pos( +/*=========================================*/ + dtuple_t* entry, /* in/out: index entry where replaced; + the clustered index record must be + covered by a lock or a page latch to + prevent deletion (rollback or purge) */ + dict_index_t* index, /* in: index; NOTE that this may also be a + non-clustered index */ + const upd_t* update, /* in: an update vector built for the index so + that the field number in an upd_field is the + index position */ + ibool order_only, + /* in: if TRUE, limit the replacement to + ordering fields of index; note that this + does not work for non-clustered indexes. */ + mem_heap_t* heap) /* in: memory heap for allocating and + copying the new values */ +{ + ulint i; + ulint n_fields; + const ulint zip_size = dict_table_zip_size(index->table); + + ut_ad(index); + + dtuple_set_info_bits(entry, update->info_bits); + + if (order_only) { + n_fields = dict_index_get_n_unique(index); + } else { + n_fields = dict_index_get_n_fields(index); + } + + for (i = 0; i < n_fields; i++) { + const dict_field_t* field; + const dict_col_t* col; + const upd_field_t* uf; + + field = dict_index_get_nth_field(index, i); + col = dict_field_get_col(field); + uf = upd_get_field_by_field_no(update, i); + + if (uf) { + row_upd_index_replace_new_col_val( + dtuple_get_nth_field(entry, i), + field, col, uf, heap, zip_size); + } + } +} + +/*************************************************************** +Replaces the new column values stored in the update vector to the index entry +given. */ +UNIV_INTERN +void +row_upd_index_replace_new_col_vals( +/*===============================*/ + dtuple_t* entry, /* in/out: index entry where replaced; + the clustered index record must be + covered by a lock or a page latch to + prevent deletion (rollback or purge) */ + dict_index_t* index, /* in: index; NOTE that this may also be a + non-clustered index */ + const upd_t* update, /* in: an update vector built for the + CLUSTERED index so that the field number in + an upd_field is the clustered index position */ + mem_heap_t* heap) /* in: memory heap for allocating and + copying the new values */ +{ + ulint i; + const dict_index_t* clust_index + = dict_table_get_first_index(index->table); + const ulint zip_size + = dict_table_zip_size(index->table); + + dtuple_set_info_bits(entry, update->info_bits); + + for (i = 0; i < dict_index_get_n_fields(index); i++) { + const dict_field_t* field; + const dict_col_t* col; + const upd_field_t* uf; + + field = dict_index_get_nth_field(index, i); + col = dict_field_get_col(field); + uf = upd_get_field_by_field_no( + update, dict_col_get_clust_pos(col, clust_index)); + + if (uf) { + row_upd_index_replace_new_col_val( + dtuple_get_nth_field(entry, i), + field, col, uf, heap, zip_size); + } + } +} + +/*************************************************************** +Replaces the new column values stored in the update vector. */ +UNIV_INTERN +void +row_upd_replace( +/*============*/ + dtuple_t* row, /* in/out: row where replaced, + indexed by col_no; + the clustered index record must be + covered by a lock or a page latch to + prevent deletion (rollback or purge) */ + row_ext_t** ext, /* out, own: NULL, or externally + stored column prefixes */ + const dict_index_t* index, /* in: clustered index */ + const upd_t* update, /* in: an update vector built for the + clustered index */ + mem_heap_t* heap) /* in: memory heap */ +{ + ulint col_no; + ulint i; + ulint n_cols; + ulint n_ext_cols; + ulint* ext_cols; + const dict_table_t* table; + + ut_ad(row); + ut_ad(ext); + ut_ad(index); + ut_ad(dict_index_is_clust(index)); + ut_ad(update); + ut_ad(heap); + + n_cols = dtuple_get_n_fields(row); + table = index->table; + ut_ad(n_cols == dict_table_get_n_cols(table)); + + ext_cols = mem_heap_alloc(heap, n_cols * sizeof *ext_cols); + n_ext_cols = 0; + + dtuple_set_info_bits(row, update->info_bits); + + for (col_no = 0; col_no < n_cols; col_no++) { + + const dict_col_t* col + = dict_table_get_nth_col(table, col_no); + const ulint clust_pos + = dict_col_get_clust_pos(col, index); + dfield_t* dfield; + + if (UNIV_UNLIKELY(clust_pos == ULINT_UNDEFINED)) { + + continue; + } + + dfield = dtuple_get_nth_field(row, col_no); + + for (i = 0; i < upd_get_n_fields(update); i++) { + + const upd_field_t* upd_field + = upd_get_nth_field(update, i); + + if (upd_field->field_no != clust_pos) { + + continue; + } + + dfield_copy_data(dfield, &upd_field->new_val); + break; + } + + if (dfield_is_ext(dfield) && col->ord_part) { + ext_cols[n_ext_cols++] = col_no; + } + } + + if (n_ext_cols) { + *ext = row_ext_create(n_ext_cols, ext_cols, row, + dict_table_zip_size(table), heap); + } else { + *ext = NULL; + } +} + +/*************************************************************** +Checks if an update vector changes an ordering field of an index record. +This function is fast if the update vector is short or the number of ordering +fields in the index is small. Otherwise, this can be quadratic. +NOTE: we compare the fields as binary strings! */ +UNIV_INTERN +ibool +row_upd_changes_ord_field_binary( +/*=============================*/ + /* out: TRUE if update vector changes + an ordering field in the index record; + NOTE: the fields are compared as binary + strings */ + const dtuple_t* row, /* in: old value of row, or NULL if the + row and the data values in update are not + known when this function is called, e.g., at + compile time */ + dict_index_t* index, /* in: index of the record */ + const upd_t* update) /* in: update vector for the row; NOTE: the + field numbers in this MUST be clustered index + positions! */ +{ + ulint n_unique; + ulint n_upd_fields; + ulint i, j; + dict_index_t* clust_index; + + ut_ad(update && index); + + n_unique = dict_index_get_n_unique(index); + n_upd_fields = upd_get_n_fields(update); + + clust_index = dict_table_get_first_index(index->table); + + for (i = 0; i < n_unique; i++) { + + const dict_field_t* ind_field; + const dict_col_t* col; + ulint col_pos; + ulint col_no; + + ind_field = dict_index_get_nth_field(index, i); + col = dict_field_get_col(ind_field); + col_pos = dict_col_get_clust_pos(col, clust_index); + col_no = dict_col_get_no(col); + + for (j = 0; j < n_upd_fields; j++) { + + const upd_field_t* upd_field + = upd_get_nth_field(update, j); + + /* Note that if the index field is a column prefix + then it may be that row does not contain an externally + stored part of the column value, and we cannot compare + the datas */ + + if (col_pos == upd_field->field_no + && (row == NULL + || ind_field->prefix_len > 0 + || !dfield_datas_are_binary_equal( + dtuple_get_nth_field(row, col_no), + &(upd_field->new_val)))) { + + return(TRUE); + } + } + } + + return(FALSE); +} + +/*************************************************************** +Checks if an update vector changes an ordering field of an index record. +NOTE: we compare the fields as binary strings! */ +UNIV_INTERN +ibool +row_upd_changes_some_index_ord_field_binary( +/*========================================*/ + /* out: TRUE if update vector + may change an ordering field + in an index record */ + const dict_table_t* table, /* in: table */ + const upd_t* update) /* in: update vector for the row */ +{ + upd_field_t* upd_field; + dict_index_t* index; + ulint i; + + index = dict_table_get_first_index(table); + + for (i = 0; i < upd_get_n_fields(update); i++) { + + upd_field = upd_get_nth_field(update, i); + + if (dict_field_get_col(dict_index_get_nth_field( + index, upd_field->field_no)) + ->ord_part) { + + return(TRUE); + } + } + + return(FALSE); +} + +/*************************************************************** +Checks if an update vector changes some of the first ordering fields of an +index record. This is only used in foreign key checks and we can assume +that index does not contain column prefixes. */ +static +ibool +row_upd_changes_first_fields_binary( +/*================================*/ + /* out: TRUE if changes */ + dtuple_t* entry, /* in: index entry */ + dict_index_t* index, /* in: index of entry */ + const upd_t* update, /* in: update vector for the row */ + ulint n) /* in: how many first fields to check */ +{ + ulint n_upd_fields; + ulint i, j; + dict_index_t* clust_index; + + ut_ad(update && index); + ut_ad(n <= dict_index_get_n_fields(index)); + + n_upd_fields = upd_get_n_fields(update); + clust_index = dict_table_get_first_index(index->table); + + for (i = 0; i < n; i++) { + + const dict_field_t* ind_field; + const dict_col_t* col; + ulint col_pos; + + ind_field = dict_index_get_nth_field(index, i); + col = dict_field_get_col(ind_field); + col_pos = dict_col_get_clust_pos(col, clust_index); + + ut_a(ind_field->prefix_len == 0); + + for (j = 0; j < n_upd_fields; j++) { + + upd_field_t* upd_field + = upd_get_nth_field(update, j); + + if (col_pos == upd_field->field_no + && !dfield_datas_are_binary_equal( + dtuple_get_nth_field(entry, i), + &(upd_field->new_val))) { + + return(TRUE); + } + } + } + + return(FALSE); +} + +/************************************************************************* +Copies the column values from a record. */ +UNIV_INLINE +void +row_upd_copy_columns( +/*=================*/ + rec_t* rec, /* in: record in a clustered index */ + const ulint* offsets,/* in: array returned by rec_get_offsets() */ + sym_node_t* column) /* in: first column in a column list, or + NULL */ +{ + byte* data; + ulint len; + + while (column) { + data = rec_get_nth_field(rec, offsets, + column->field_nos[SYM_CLUST_FIELD_NO], + &len); + if (len == UNIV_SQL_NULL) { + len = UNIV_SQL_NULL; + } + eval_node_copy_and_alloc_val(column, data, len); + + column = UT_LIST_GET_NEXT(col_var_list, column); + } +} + +/************************************************************************* +Calculates the new values for fields to update. Note that row_upd_copy_columns +must have been called first. */ +UNIV_INLINE +void +row_upd_eval_new_vals( +/*==================*/ + upd_t* update) /* in/out: update vector */ +{ + que_node_t* exp; + upd_field_t* upd_field; + ulint n_fields; + ulint i; + + n_fields = upd_get_n_fields(update); + + for (i = 0; i < n_fields; i++) { + upd_field = upd_get_nth_field(update, i); + + exp = upd_field->exp; + + eval_exp(exp); + + dfield_copy_data(&(upd_field->new_val), que_node_get_val(exp)); + } +} + +/*************************************************************** +Stores to the heap the row on which the node->pcur is positioned. */ +static +void +row_upd_store_row( +/*==============*/ + upd_node_t* node) /* in: row update node */ +{ + dict_index_t* clust_index; + rec_t* rec; + mem_heap_t* heap = NULL; + ulint offsets_[REC_OFFS_NORMAL_SIZE]; + const ulint* offsets; + rec_offs_init(offsets_); + + ut_ad(node->pcur->latch_mode != BTR_NO_LATCHES); + + if (node->row != NULL) { + mem_heap_empty(node->heap); + } + + clust_index = dict_table_get_first_index(node->table); + + rec = btr_pcur_get_rec(node->pcur); + + offsets = rec_get_offsets(rec, clust_index, offsets_, + ULINT_UNDEFINED, &heap); + node->row = row_build(ROW_COPY_DATA, clust_index, rec, offsets, + NULL, &node->ext, node->heap); + if (node->is_delete) { + node->upd_row = NULL; + node->upd_ext = NULL; + } else { + node->upd_row = dtuple_copy(node->row, node->heap); + row_upd_replace(node->upd_row, &node->upd_ext, + clust_index, node->update, node->heap); + } + + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } +} + +/*************************************************************** +Updates a secondary index entry of a row. */ +static +ulint +row_upd_sec_index_entry( +/*====================*/ + /* out: DB_SUCCESS if operation successfully + completed, else error code or DB_LOCK_WAIT */ + upd_node_t* node, /* in: row update node */ + que_thr_t* thr) /* in: query thread */ +{ + ibool check_ref; + ibool found; + dict_index_t* index; + dtuple_t* entry; + btr_pcur_t pcur; + btr_cur_t* btr_cur; + mem_heap_t* heap; + rec_t* rec; + ulint err = DB_SUCCESS; + mtr_t mtr; + trx_t* trx = thr_get_trx(thr); + + index = node->index; + + check_ref = row_upd_index_is_referenced(index, trx); + + heap = mem_heap_create(1024); + + /* Build old index entry */ + entry = row_build_index_entry(node->row, node->ext, index, heap); + ut_a(entry); + + log_free_check(); + mtr_start(&mtr); + + found = row_search_index_entry(index, entry, BTR_MODIFY_LEAF, &pcur, + &mtr); + btr_cur = btr_pcur_get_btr_cur(&pcur); + + rec = btr_cur_get_rec(btr_cur); + + if (UNIV_UNLIKELY(!found)) { + fputs("InnoDB: error in sec index entry update in\n" + "InnoDB: ", stderr); + dict_index_name_print(stderr, trx, index); + fputs("\n" + "InnoDB: tuple ", stderr); + dtuple_print(stderr, entry); + fputs("\n" + "InnoDB: record ", stderr); + rec_print(stderr, rec, index); + putc('\n', stderr); + + trx_print(stderr, trx, 0); + + fputs("\n" + "InnoDB: Submit a detailed bug report" + " to http://bugs.mysql.com\n", stderr); + } else { + /* Delete mark the old index record; it can already be + delete marked if we return after a lock wait in + row_ins_index_entry below */ + + if (!rec_get_deleted_flag(rec, + dict_table_is_comp(index->table))) { + err = btr_cur_del_mark_set_sec_rec(0, btr_cur, TRUE, + thr, &mtr); + if (err == DB_SUCCESS && check_ref) { + + ulint* offsets = rec_get_offsets( + rec, index, NULL, + ULINT_UNDEFINED, &heap); + /* NOTE that the following call loses + the position of pcur ! */ + err = row_upd_check_references_constraints( + node, &pcur, index->table, + index, offsets, thr, &mtr); + } + } + } + + btr_pcur_close(&pcur); + mtr_commit(&mtr); + + if (node->is_delete || err != DB_SUCCESS) { + + goto func_exit; + } + + /* Build a new index entry */ + entry = row_build_index_entry(node->upd_row, node->upd_ext, + index, heap); + ut_a(entry); + + /* Insert new index entry */ + err = row_ins_index_entry(index, entry, 0, TRUE, thr); + +func_exit: + mem_heap_free(heap); + + return(err); +} + +/*************************************************************** +Updates the secondary index record if it is changed in the row update or +deletes it if this is a delete. */ +UNIV_INLINE +ulint +row_upd_sec_step( +/*=============*/ + /* out: DB_SUCCESS if operation successfully + completed, else error code or DB_LOCK_WAIT */ + upd_node_t* node, /* in: row update node */ + que_thr_t* thr) /* in: query thread */ +{ + ut_ad((node->state == UPD_NODE_UPDATE_ALL_SEC) + || (node->state == UPD_NODE_UPDATE_SOME_SEC)); + ut_ad(!dict_index_is_clust(node->index)); + + if (node->state == UPD_NODE_UPDATE_ALL_SEC + || row_upd_changes_ord_field_binary(node->row, node->index, + node->update)) { + return(row_upd_sec_index_entry(node, thr)); + } + + return(DB_SUCCESS); +} + +/*************************************************************** +Marks the clustered index record deleted and inserts the updated version +of the record to the index. This function should be used when the ordering +fields of the clustered index record change. This should be quite rare in +database applications. */ +static +ulint +row_upd_clust_rec_by_insert( +/*========================*/ + /* out: DB_SUCCESS if operation successfully + completed, else error code or DB_LOCK_WAIT */ + upd_node_t* node, /* in: row update node */ + dict_index_t* index, /* in: clustered index of the record */ + que_thr_t* thr, /* in: query thread */ + ibool check_ref,/* in: TRUE if index may be referenced in + a foreign key constraint */ + mtr_t* mtr) /* in: mtr; gets committed here */ +{ + mem_heap_t* heap = NULL; + btr_pcur_t* pcur; + btr_cur_t* btr_cur; + trx_t* trx; + dict_table_t* table; + dtuple_t* entry; + ulint err; + + ut_ad(node); + ut_ad(dict_index_is_clust(index)); + + trx = thr_get_trx(thr); + table = node->table; + pcur = node->pcur; + btr_cur = btr_pcur_get_btr_cur(pcur); + + if (node->state != UPD_NODE_INSERT_CLUSTERED) { + rec_t* rec; + dict_index_t* index; + ulint offsets_[REC_OFFS_NORMAL_SIZE]; + ulint* offsets; + rec_offs_init(offsets_); + + err = btr_cur_del_mark_set_clust_rec(BTR_NO_LOCKING_FLAG, + btr_cur, TRUE, thr, mtr); + if (err != DB_SUCCESS) { + mtr_commit(mtr); + return(err); + } + + /* Mark as not-owned the externally stored fields which the new + row inherits from the delete marked record: purge should not + free those externally stored fields even if the delete marked + record is removed from the index tree, or updated. */ + + rec = btr_cur_get_rec(btr_cur); + index = dict_table_get_first_index(table); + offsets = rec_get_offsets(rec, index, offsets_, + ULINT_UNDEFINED, &heap); + btr_cur_mark_extern_inherited_fields( + btr_cur_get_page_zip(btr_cur), + rec, index, offsets, node->update, mtr); + if (check_ref) { + /* NOTE that the following call loses + the position of pcur ! */ + err = row_upd_check_references_constraints( + node, pcur, table, index, offsets, thr, mtr); + if (err != DB_SUCCESS) { + mtr_commit(mtr); + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } + return(err); + } + } + } + + mtr_commit(mtr); + + if (!heap) { + heap = mem_heap_create(500); + } + node->state = UPD_NODE_INSERT_CLUSTERED; + + entry = row_build_index_entry(node->upd_row, node->upd_ext, + index, heap); + ut_a(entry); + + row_upd_index_entry_sys_field(entry, index, DATA_TRX_ID, trx->id); + + if (node->upd_ext) { + /* If we return from a lock wait, for example, we may have + extern fields marked as not-owned in entry (marked in the + if-branch above). We must unmark them. */ + + btr_cur_unmark_dtuple_extern_fields(entry); + + /* We must mark non-updated extern fields in entry as + inherited, so that a possible rollback will not free them. */ + + btr_cur_mark_dtuple_inherited_extern(entry, node->update); + } + + err = row_ins_index_entry(index, entry, + node->upd_ext ? node->upd_ext->n_ext : 0, + TRUE, thr); + mem_heap_free(heap); + + return(err); +} + +/*************************************************************** +Updates a clustered index record of a row when the ordering fields do +not change. */ +static +ulint +row_upd_clust_rec( +/*==============*/ + /* out: DB_SUCCESS if operation successfully + completed, else error code or DB_LOCK_WAIT */ + upd_node_t* node, /* in: row update node */ + dict_index_t* index, /* in: clustered index */ + que_thr_t* thr, /* in: query thread */ + mtr_t* mtr) /* in: mtr; gets committed here */ +{ + mem_heap_t* heap = NULL; + big_rec_t* big_rec = NULL; + btr_pcur_t* pcur; + btr_cur_t* btr_cur; + ulint err; + + ut_ad(node); + ut_ad(dict_index_is_clust(index)); + + pcur = node->pcur; + btr_cur = btr_pcur_get_btr_cur(pcur); + + ut_ad(!rec_get_deleted_flag(btr_pcur_get_rec(pcur), + dict_table_is_comp(index->table))); + + /* Try optimistic updating of the record, keeping changes within + the page; we do not check locks because we assume the x-lock on the + record to update */ + + if (node->cmpl_info & UPD_NODE_NO_SIZE_CHANGE) { + err = btr_cur_update_in_place(BTR_NO_LOCKING_FLAG, + btr_cur, node->update, + node->cmpl_info, thr, mtr); + } else { + err = btr_cur_optimistic_update(BTR_NO_LOCKING_FLAG, + btr_cur, node->update, + node->cmpl_info, thr, mtr); + } + + mtr_commit(mtr); + + if (UNIV_LIKELY(err == DB_SUCCESS)) { + + return(DB_SUCCESS); + } + + if (buf_LRU_buf_pool_running_out()) { + + return(DB_LOCK_TABLE_FULL); + } + /* We may have to modify the tree structure: do a pessimistic descent + down the index tree */ + + mtr_start(mtr); + + /* NOTE: this transaction has an s-lock or x-lock on the record and + therefore other transactions cannot modify the record when we have no + latch on the page. In addition, we assume that other query threads of + the same transaction do not modify the record in the meantime. + Therefore we can assert that the restoration of the cursor succeeds. */ + + ut_a(btr_pcur_restore_position(BTR_MODIFY_TREE, pcur, mtr)); + + ut_ad(!rec_get_deleted_flag(btr_pcur_get_rec(pcur), + dict_table_is_comp(index->table))); + + err = btr_cur_pessimistic_update(BTR_NO_LOCKING_FLAG, btr_cur, + &heap, &big_rec, node->update, + node->cmpl_info, thr, mtr); + mtr_commit(mtr); + + if (err == DB_SUCCESS && big_rec) { + ulint offsets_[REC_OFFS_NORMAL_SIZE]; + rec_t* rec; + rec_offs_init(offsets_); + + mtr_start(mtr); + + ut_a(btr_pcur_restore_position(BTR_MODIFY_TREE, pcur, mtr)); + rec = btr_cur_get_rec(btr_cur); + err = btr_store_big_rec_extern_fields( + index, btr_cur_get_block(btr_cur), rec, + rec_get_offsets(rec, index, offsets_, + ULINT_UNDEFINED, &heap), + big_rec, mtr); + mtr_commit(mtr); + } + + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } + + if (big_rec) { + dtuple_big_rec_free(big_rec); + } + + return(err); +} + +/*************************************************************** +Delete marks a clustered index record. */ +static +ulint +row_upd_del_mark_clust_rec( +/*=======================*/ + /* out: DB_SUCCESS if operation successfully + completed, else error code */ + upd_node_t* node, /* in: row update node */ + dict_index_t* index, /* in: clustered index */ + ulint* offsets,/* in/out: rec_get_offsets() for the + record under the cursor */ + que_thr_t* thr, /* in: query thread */ + ibool check_ref,/* in: TRUE if index may be referenced in + a foreign key constraint */ + mtr_t* mtr) /* in: mtr; gets committed here */ +{ + btr_pcur_t* pcur; + btr_cur_t* btr_cur; + ulint err; + + ut_ad(node); + ut_ad(dict_index_is_clust(index)); + ut_ad(node->is_delete); + + pcur = node->pcur; + btr_cur = btr_pcur_get_btr_cur(pcur); + + /* Store row because we have to build also the secondary index + entries */ + + row_upd_store_row(node); + + /* Mark the clustered index record deleted; we do not have to check + locks, because we assume that we have an x-lock on the record */ + + err = btr_cur_del_mark_set_clust_rec(BTR_NO_LOCKING_FLAG, + btr_cur, TRUE, thr, mtr); + if (err == DB_SUCCESS && check_ref) { + /* NOTE that the following call loses the position of pcur ! */ + + err = row_upd_check_references_constraints(node, + pcur, index->table, + index, offsets, + thr, mtr); + } + + mtr_commit(mtr); + + return(err); +} + +/*************************************************************** +Updates the clustered index record. */ +static +ulint +row_upd_clust_step( +/*===============*/ + /* out: DB_SUCCESS if operation successfully + completed, DB_LOCK_WAIT in case of a lock wait, + else error code */ + upd_node_t* node, /* in: row update node */ + que_thr_t* thr) /* in: query thread */ +{ + dict_index_t* index; + btr_pcur_t* pcur; + ibool success; + ibool check_ref; + ulint err; + mtr_t* mtr; + mtr_t mtr_buf; + rec_t* rec; + mem_heap_t* heap = NULL; + ulint offsets_[REC_OFFS_NORMAL_SIZE]; + ulint* offsets; + rec_offs_init(offsets_); + + index = dict_table_get_first_index(node->table); + + check_ref = row_upd_index_is_referenced(index, thr_get_trx(thr)); + + pcur = node->pcur; + + /* We have to restore the cursor to its position */ + mtr = &mtr_buf; + + mtr_start(mtr); + + /* If the restoration does not succeed, then the same + transaction has deleted the record on which the cursor was, + and that is an SQL error. If the restoration succeeds, it may + still be that the same transaction has successively deleted + and inserted a record with the same ordering fields, but in + that case we know that the transaction has at least an + implicit x-lock on the record. */ + + ut_a(pcur->rel_pos == BTR_PCUR_ON); + + success = btr_pcur_restore_position(BTR_MODIFY_LEAF, pcur, mtr); + + if (!success) { + err = DB_RECORD_NOT_FOUND; + + mtr_commit(mtr); + + return(err); + } + + /* If this is a row in SYS_INDEXES table of the data dictionary, + then we have to free the file segments of the index tree associated + with the index */ + + if (node->is_delete + && ut_dulint_cmp(node->table->id, DICT_INDEXES_ID) == 0) { + + dict_drop_index_tree(btr_pcur_get_rec(pcur), mtr); + + mtr_commit(mtr); + + mtr_start(mtr); + + success = btr_pcur_restore_position(BTR_MODIFY_LEAF, pcur, + mtr); + if (!success) { + err = DB_ERROR; + + mtr_commit(mtr); + + return(err); + } + } + + rec = btr_pcur_get_rec(pcur); + offsets = rec_get_offsets(rec, index, offsets_, + ULINT_UNDEFINED, &heap); + + if (!node->has_clust_rec_x_lock) { + err = lock_clust_rec_modify_check_and_lock( + 0, btr_pcur_get_block(pcur), + rec, index, offsets, thr); + if (err != DB_SUCCESS) { + mtr_commit(mtr); + goto exit_func; + } + } + + /* NOTE: the following function calls will also commit mtr */ + + if (node->is_delete) { + err = row_upd_del_mark_clust_rec(node, index, offsets, + thr, check_ref, mtr); + if (err == DB_SUCCESS) { + node->state = UPD_NODE_UPDATE_ALL_SEC; + node->index = dict_table_get_next_index(index); + } +exit_func: + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } + return(err); + } + + /* If the update is made for MySQL, we already have the update vector + ready, else we have to do some evaluation: */ + + if (UNIV_UNLIKELY(!node->in_mysql_interface)) { + /* Copy the necessary columns from clust_rec and calculate the + new values to set */ + row_upd_copy_columns(rec, offsets, + UT_LIST_GET_FIRST(node->columns)); + row_upd_eval_new_vals(node->update); + } + + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } + + if (node->cmpl_info & UPD_NODE_NO_ORD_CHANGE) { + + err = row_upd_clust_rec(node, index, thr, mtr); + return(err); + } + + row_upd_store_row(node); + + if (row_upd_changes_ord_field_binary(node->row, index, node->update)) { + + /* Update causes an ordering field (ordering fields within + the B-tree) of the clustered index record to change: perform + the update by delete marking and inserting. + + TODO! What to do to the 'Halloween problem', where an update + moves the record forward in index so that it is again + updated when the cursor arrives there? Solution: the + read operation must check the undo record undo number when + choosing records to update. MySQL solves now the problem + externally! */ + + err = row_upd_clust_rec_by_insert(node, index, thr, check_ref, + mtr); + if (err != DB_SUCCESS) { + + return(err); + } + + node->state = UPD_NODE_UPDATE_ALL_SEC; + } else { + err = row_upd_clust_rec(node, index, thr, mtr); + + if (err != DB_SUCCESS) { + + return(err); + } + + node->state = UPD_NODE_UPDATE_SOME_SEC; + } + + node->index = dict_table_get_next_index(index); + + return(err); +} + +/*************************************************************** +Updates the affected index records of a row. When the control is transferred +to this node, we assume that we have a persistent cursor which was on a +record, and the position of the cursor is stored in the cursor. */ +static +ulint +row_upd( +/*====*/ + /* out: DB_SUCCESS if operation successfully + completed, else error code or DB_LOCK_WAIT */ + upd_node_t* node, /* in: row update node */ + que_thr_t* thr) /* in: query thread */ +{ + ulint err = DB_SUCCESS; + + ut_ad(node && thr); + + if (UNIV_LIKELY(node->in_mysql_interface)) { + + /* We do not get the cmpl_info value from the MySQL + interpreter: we must calculate it on the fly: */ + + if (node->is_delete + || row_upd_changes_some_index_ord_field_binary( + node->table, node->update)) { + node->cmpl_info = 0; + } else { + node->cmpl_info = UPD_NODE_NO_ORD_CHANGE; + } + } + + if (node->state == UPD_NODE_UPDATE_CLUSTERED + || node->state == UPD_NODE_INSERT_CLUSTERED) { + + err = row_upd_clust_step(node, thr); + + if (err != DB_SUCCESS) { + + goto function_exit; + } + } + + if (!node->is_delete && (node->cmpl_info & UPD_NODE_NO_ORD_CHANGE)) { + + goto function_exit; + } + + while (node->index != NULL) { + err = row_upd_sec_step(node, thr); + + if (err != DB_SUCCESS) { + + goto function_exit; + } + + node->index = dict_table_get_next_index(node->index); + } + +function_exit: + if (err == DB_SUCCESS) { + /* Do some cleanup */ + + if (node->row != NULL) { + node->row = NULL; + node->ext = NULL; + node->upd_row = NULL; + node->upd_ext = NULL; + mem_heap_empty(node->heap); + } + + node->state = UPD_NODE_UPDATE_CLUSTERED; + } + + return(err); +} + +/*************************************************************** +Updates a row in a table. This is a high-level function used in SQL execution +graphs. */ +UNIV_INTERN +que_thr_t* +row_upd_step( +/*=========*/ + /* out: query thread to run next or NULL */ + que_thr_t* thr) /* in: query thread */ +{ + upd_node_t* node; + sel_node_t* sel_node; + que_node_t* parent; + ulint err = DB_SUCCESS; + trx_t* trx; + + ut_ad(thr); + + trx = thr_get_trx(thr); + + trx_start_if_not_started(trx); + + node = thr->run_node; + + sel_node = node->select; + + parent = que_node_get_parent(node); + + ut_ad(que_node_get_type(node) == QUE_NODE_UPDATE); + + if (thr->prev_node == parent) { + node->state = UPD_NODE_SET_IX_LOCK; + } + + if (node->state == UPD_NODE_SET_IX_LOCK) { + + if (!node->has_clust_rec_x_lock) { + /* It may be that the current session has not yet + started its transaction, or it has been committed: */ + + err = lock_table(0, node->table, LOCK_IX, thr); + + if (err != DB_SUCCESS) { + + goto error_handling; + } + } + + node->state = UPD_NODE_UPDATE_CLUSTERED; + + if (node->searched_update) { + /* Reset the cursor */ + sel_node->state = SEL_NODE_OPEN; + + /* Fetch a row to update */ + + thr->run_node = sel_node; + + return(thr); + } + } + + /* sel_node is NULL if we are in the MySQL interface */ + + if (sel_node && (sel_node->state != SEL_NODE_FETCH)) { + + if (!node->searched_update) { + /* An explicit cursor should be positioned on a row + to update */ + + ut_error; + + err = DB_ERROR; + + goto error_handling; + } + + ut_ad(sel_node->state == SEL_NODE_NO_MORE_ROWS); + + /* No more rows to update, or the select node performed the + updates directly in-place */ + + thr->run_node = parent; + + return(thr); + } + + /* DO THE CHECKS OF THE CONSISTENCY CONSTRAINTS HERE */ + + err = row_upd(node, thr); + +error_handling: + trx->error_state = err; + + if (err != DB_SUCCESS) { + return(NULL); + } + + /* DO THE TRIGGER ACTIONS HERE */ + + if (node->searched_update) { + /* Fetch next row to update */ + + thr->run_node = sel_node; + } else { + /* It was an explicit cursor update */ + + thr->run_node = parent; + } + + node->state = UPD_NODE_UPDATE_CLUSTERED; + + return(thr); +} === added file 'storage/xtradb/row/row0vers.c' --- a/storage/xtradb/row/row0vers.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/row/row0vers.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,741 @@ +/***************************************************************************** + +Copyright (c) 1997, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Row versions + +Created 2/6/1997 Heikki Tuuri +*******************************************************/ + +#include "row0vers.h" + +#ifdef UNIV_NONINL +#include "row0vers.ic" +#endif + +#include "dict0dict.h" +#include "dict0boot.h" +#include "btr0btr.h" +#include "mach0data.h" +#include "trx0rseg.h" +#include "trx0trx.h" +#include "trx0roll.h" +#include "trx0undo.h" +#include "trx0purge.h" +#include "trx0rec.h" +#include "que0que.h" +#include "row0row.h" +#include "row0upd.h" +#include "rem0cmp.h" +#include "read0read.h" +#include "lock0lock.h" + +/********************************************************************* +Finds out if an active transaction has inserted or modified a secondary +index record. NOTE: the kernel mutex is temporarily released in this +function! */ +UNIV_INTERN +trx_t* +row_vers_impl_x_locked_off_kernel( +/*==============================*/ + /* out: NULL if committed, else the active + transaction; NOTE that the kernel mutex is + temporarily released! */ + const rec_t* rec, /* in: record in a secondary index */ + dict_index_t* index, /* in: the secondary index */ + const ulint* offsets)/* in: rec_get_offsets(rec, index) */ +{ + dict_index_t* clust_index; + rec_t* clust_rec; + ulint* clust_offsets; + rec_t* version; + dulint trx_id; + mem_heap_t* heap; + mem_heap_t* heap2; + dtuple_t* row; + dtuple_t* entry = NULL; /* assignment to eliminate compiler + warning */ + trx_t* trx; + ulint rec_del; + ulint err; + mtr_t mtr; + ulint comp; + + ut_ad(mutex_own(&kernel_mutex)); +#ifdef UNIV_SYNC_DEBUG + ut_ad(!rw_lock_own(&(purge_sys->latch), RW_LOCK_SHARED)); +#endif /* UNIV_SYNC_DEBUG */ + + mutex_exit(&kernel_mutex); + + mtr_start(&mtr); + + /* Search for the clustered index record: this is a time-consuming + operation: therefore we release the kernel mutex; also, the release + is required by the latching order convention. The latch on the + clustered index locks the top of the stack of versions. We also + reserve purge_latch to lock the bottom of the version stack. */ + + clust_rec = row_get_clust_rec(BTR_SEARCH_LEAF, rec, index, + &clust_index, &mtr); + if (!clust_rec) { + /* In a rare case it is possible that no clust rec is found + for a secondary index record: if in row0umod.c + row_undo_mod_remove_clust_low() we have already removed the + clust rec, while purge is still cleaning and removing + secondary index records associated with earlier versions of + the clustered index record. In that case there cannot be + any implicit lock on the secondary index record, because + an active transaction which has modified the secondary index + record has also modified the clustered index record. And in + a rollback we always undo the modifications to secondary index + records before the clustered index record. */ + + mutex_enter(&kernel_mutex); + mtr_commit(&mtr); + + return(NULL); + } + + heap = mem_heap_create(1024); + clust_offsets = rec_get_offsets(clust_rec, clust_index, NULL, + ULINT_UNDEFINED, &heap); + trx_id = row_get_rec_trx_id(clust_rec, clust_index, clust_offsets); + + mtr_s_lock(&(purge_sys->latch), &mtr); + + mutex_enter(&kernel_mutex); + + trx = NULL; + if (!trx_is_active(trx_id)) { + /* The transaction that modified or inserted clust_rec is no + longer active: no implicit lock on rec */ + goto exit_func; + } + + if (!lock_check_trx_id_sanity(trx_id, clust_rec, clust_index, + clust_offsets, TRUE)) { + /* Corruption noticed: try to avoid a crash by returning */ + goto exit_func; + } + + comp = page_rec_is_comp(rec); + ut_ad(index->table == clust_index->table); + ut_ad(!!comp == dict_table_is_comp(index->table)); + ut_ad(!comp == !page_rec_is_comp(clust_rec)); + + /* We look up if some earlier version, which was modified by the trx_id + transaction, of the clustered index record would require rec to be in + a different state (delete marked or unmarked, or have different field + values, or not existing). If there is such a version, then rec was + modified by the trx_id transaction, and it has an implicit x-lock on + rec. Note that if clust_rec itself would require rec to be in a + different state, then the trx_id transaction has not yet had time to + modify rec, and does not necessarily have an implicit x-lock on rec. */ + + rec_del = rec_get_deleted_flag(rec, comp); + trx = NULL; + + version = clust_rec; + + for (;;) { + rec_t* prev_version; + ulint vers_del; + row_ext_t* ext; + dulint prev_trx_id; + + mutex_exit(&kernel_mutex); + + /* While we retrieve an earlier version of clust_rec, we + release the kernel mutex, because it may take time to access + the disk. After the release, we have to check if the trx_id + transaction is still active. We keep the semaphore in mtr on + the clust_rec page, so that no other transaction can update + it and get an implicit x-lock on rec. */ + + heap2 = heap; + heap = mem_heap_create(1024); + err = trx_undo_prev_version_build(clust_rec, &mtr, version, + clust_index, clust_offsets, + heap, &prev_version); + mem_heap_free(heap2); /* free version and clust_offsets */ + + if (prev_version == NULL) { + mutex_enter(&kernel_mutex); + + if (!trx_is_active(trx_id)) { + /* Transaction no longer active: no + implicit x-lock */ + + break; + } + + /* If the transaction is still active, + clust_rec must be a fresh insert, because no + previous version was found. */ + ut_ad(err == DB_SUCCESS); + + /* It was a freshly inserted version: there is an + implicit x-lock on rec */ + + trx = trx_get_on_id(trx_id); + + break; + } + + clust_offsets = rec_get_offsets(prev_version, clust_index, + NULL, ULINT_UNDEFINED, &heap); + + vers_del = rec_get_deleted_flag(prev_version, comp); + prev_trx_id = row_get_rec_trx_id(prev_version, clust_index, + clust_offsets); + + /* If the trx_id and prev_trx_id are different and if + the prev_version is marked deleted then the + prev_trx_id must have already committed for the trx_id + to be able to modify the row. Therefore, prev_trx_id + cannot hold any implicit lock. */ + if (vers_del && 0 != ut_dulint_cmp(trx_id, prev_trx_id)) { + + mutex_enter(&kernel_mutex); + break; + } + + /* The stack of versions is locked by mtr. Thus, it + is safe to fetch the prefixes for externally stored + columns. */ + row = row_build(ROW_COPY_POINTERS, clust_index, prev_version, + clust_offsets, NULL, &ext, heap); + entry = row_build_index_entry(row, ext, index, heap); + /* entry may be NULL if a record was inserted in place + of a deleted record, and the BLOB pointers of the new + record were not initialized yet. But in that case, + prev_version should be NULL. */ + ut_a(entry); + + mutex_enter(&kernel_mutex); + + if (!trx_is_active(trx_id)) { + /* Transaction no longer active: no implicit x-lock */ + + break; + } + + /* If we get here, we know that the trx_id transaction is + still active and it has modified prev_version. Let us check + if prev_version would require rec to be in a different + state. */ + + /* The previous version of clust_rec must be + accessible, because the transaction is still active + and clust_rec was not a fresh insert. */ + ut_ad(err == DB_SUCCESS); + + /* We check if entry and rec are identified in the alphabetical + ordering */ + if (0 == cmp_dtuple_rec(entry, rec, offsets)) { + /* The delete marks of rec and prev_version should be + equal for rec to be in the state required by + prev_version */ + + if (rec_del != vers_del) { + trx = trx_get_on_id(trx_id); + + break; + } + + /* It is possible that the row was updated so that the + secondary index record remained the same in + alphabetical ordering, but the field values changed + still. For example, 'abc' -> 'ABC'. Check also that. */ + + dtuple_set_types_binary(entry, + dtuple_get_n_fields(entry)); + if (0 != cmp_dtuple_rec(entry, rec, offsets)) { + + trx = trx_get_on_id(trx_id); + + break; + } + } else if (!rec_del) { + /* The delete mark should be set in rec for it to be + in the state required by prev_version */ + + trx = trx_get_on_id(trx_id); + + break; + } + + if (0 != ut_dulint_cmp(trx_id, prev_trx_id)) { + /* The versions modified by the trx_id transaction end + to prev_version: no implicit x-lock */ + + break; + } + + version = prev_version; + }/* for (;;) */ + +exit_func: + mtr_commit(&mtr); + mem_heap_free(heap); + + return(trx); +} + +/********************************************************************* +Finds out if we must preserve a delete marked earlier version of a clustered +index record, because it is >= the purge view. */ +UNIV_INTERN +ibool +row_vers_must_preserve_del_marked( +/*==============================*/ + /* out: TRUE if earlier version should be preserved */ + dulint trx_id, /* in: transaction id in the version */ + mtr_t* mtr) /* in: mtr holding the latch on the clustered index + record; it will also hold the latch on purge_view */ +{ +#ifdef UNIV_SYNC_DEBUG + ut_ad(!rw_lock_own(&(purge_sys->latch), RW_LOCK_SHARED)); +#endif /* UNIV_SYNC_DEBUG */ + + mtr_s_lock(&(purge_sys->latch), mtr); + + if (trx_purge_update_undo_must_exist(trx_id)) { + + /* A purge operation is not yet allowed to remove this + delete marked record */ + + return(TRUE); + } + + return(FALSE); +} + +/********************************************************************* +Finds out if a version of the record, where the version >= the current +purge view, should have ientry as its secondary index entry. We check +if there is any not delete marked version of the record where the trx +id >= purge view, and the secondary index entry and ientry are identified in +the alphabetical ordering; exactly in this case we return TRUE. */ +UNIV_INTERN +ibool +row_vers_old_has_index_entry( +/*=========================*/ + /* out: TRUE if earlier version should have */ + ibool also_curr,/* in: TRUE if also rec is included in the + versions to search; otherwise only versions + prior to it are searched */ + const rec_t* rec, /* in: record in the clustered index; the + caller must have a latch on the page */ + mtr_t* mtr, /* in: mtr holding the latch on rec; it will + also hold the latch on purge_view */ + dict_index_t* index, /* in: the secondary index */ + const dtuple_t* ientry) /* in: the secondary index entry */ +{ + const rec_t* version; + rec_t* prev_version; + dict_index_t* clust_index; + ulint* clust_offsets; + mem_heap_t* heap; + mem_heap_t* heap2; + const dtuple_t* row; + const dtuple_t* entry; + ulint err; + ulint comp; + + ut_ad(mtr_memo_contains_page(mtr, rec, MTR_MEMO_PAGE_X_FIX) + || mtr_memo_contains_page(mtr, rec, MTR_MEMO_PAGE_S_FIX)); +#ifdef UNIV_SYNC_DEBUG + ut_ad(!rw_lock_own(&(purge_sys->latch), RW_LOCK_SHARED)); +#endif /* UNIV_SYNC_DEBUG */ + mtr_s_lock(&(purge_sys->latch), mtr); + + clust_index = dict_table_get_first_index(index->table); + + comp = page_rec_is_comp(rec); + ut_ad(!dict_table_is_comp(index->table) == !comp); + heap = mem_heap_create(1024); + clust_offsets = rec_get_offsets(rec, clust_index, NULL, + ULINT_UNDEFINED, &heap); + + if (also_curr && !rec_get_deleted_flag(rec, comp)) { + row_ext_t* ext; + + /* The stack of versions is locked by mtr. + Thus, it is safe to fetch the prefixes for + externally stored columns. */ + row = row_build(ROW_COPY_POINTERS, clust_index, + rec, clust_offsets, NULL, &ext, heap); + entry = row_build_index_entry(row, ext, index, heap); + + /* If entry == NULL, the record contains unset BLOB + pointers. This must be a freshly inserted record. If + this is called from + row_purge_remove_sec_if_poss_low(), the thread will + hold latches on the clustered index and the secondary + index. Because the insert works in three steps: + + (1) insert the record to clustered index + (2) store the BLOBs and update BLOB pointers + (3) insert records to secondary indexes + + the purge thread can safely ignore freshly inserted + records and delete the secondary index record. The + thread that inserted the new record will be inserting + the secondary index records. */ + + /* NOTE that we cannot do the comparison as binary + fields because the row is maybe being modified so that + the clustered index record has already been updated to + a different binary value in a char field, but the + collation identifies the old and new value anyway! */ + if (entry && !dtuple_coll_cmp(ientry, entry)) { + + mem_heap_free(heap); + + return(TRUE); + } + } + + version = rec; + + for (;;) { + heap2 = heap; + heap = mem_heap_create(1024); + err = trx_undo_prev_version_build(rec, mtr, version, + clust_index, clust_offsets, + heap, &prev_version); + mem_heap_free(heap2); /* free version and clust_offsets */ + + if (err != DB_SUCCESS || !prev_version) { + /* Versions end here */ + + mem_heap_free(heap); + + return(FALSE); + } + + clust_offsets = rec_get_offsets(prev_version, clust_index, + NULL, ULINT_UNDEFINED, &heap); + + if (!rec_get_deleted_flag(prev_version, comp)) { + row_ext_t* ext; + + /* The stack of versions is locked by mtr. + Thus, it is safe to fetch the prefixes for + externally stored columns. */ + row = row_build(ROW_COPY_POINTERS, clust_index, + prev_version, clust_offsets, + NULL, &ext, heap); + entry = row_build_index_entry(row, ext, index, heap); + + /* If entry == NULL, the record contains unset + BLOB pointers. This must be a freshly + inserted record that we can safely ignore. + For the justification, see the comments after + the previous row_build_index_entry() call. */ + + /* NOTE that we cannot do the comparison as binary + fields because maybe the secondary index record has + already been updated to a different binary value in + a char field, but the collation identifies the old + and new value anyway! */ + + if (entry && !dtuple_coll_cmp(ientry, entry)) { + + mem_heap_free(heap); + + return(TRUE); + } + } + + version = prev_version; + } +} + +/********************************************************************* +Constructs the version of a clustered index record which a consistent +read should see. We assume that the trx id stored in rec is such that +the consistent read should not see rec in its present version. */ +UNIV_INTERN +ulint +row_vers_build_for_consistent_read( +/*===============================*/ + /* out: DB_SUCCESS or DB_MISSING_HISTORY */ + const rec_t* rec, /* in: record in a clustered index; the + caller must have a latch on the page; this + latch locks the top of the stack of versions + of this records */ + mtr_t* mtr, /* in: mtr holding the latch on rec */ + dict_index_t* index, /* in: the clustered index */ + ulint** offsets,/* in/out: offsets returned by + rec_get_offsets(rec, index) */ + read_view_t* view, /* in: the consistent read view */ + mem_heap_t** offset_heap,/* in/out: memory heap from which + the offsets are allocated */ + mem_heap_t* in_heap,/* in: memory heap from which the memory for + *old_vers is allocated; memory for possible + intermediate versions is allocated and freed + locally within the function */ + rec_t** old_vers)/* out, own: old version, or NULL if the + record does not exist in the view, that is, + it was freshly inserted afterwards */ +{ + const rec_t* version; + rec_t* prev_version; + dulint trx_id; + mem_heap_t* heap = NULL; + byte* buf; + ulint err; + + ut_ad(dict_index_is_clust(index)); + ut_ad(mtr_memo_contains_page(mtr, rec, MTR_MEMO_PAGE_X_FIX) + || mtr_memo_contains_page(mtr, rec, MTR_MEMO_PAGE_S_FIX)); +#ifdef UNIV_SYNC_DEBUG + ut_ad(!rw_lock_own(&(purge_sys->latch), RW_LOCK_SHARED)); +#endif /* UNIV_SYNC_DEBUG */ + + ut_ad(rec_offs_validate(rec, index, *offsets)); + + trx_id = row_get_rec_trx_id(rec, index, *offsets); + + ut_ad(!read_view_sees_trx_id(view, trx_id)); + + rw_lock_s_lock(&(purge_sys->latch)); + version = rec; + + for (;;) { + mem_heap_t* heap2 = heap; + trx_undo_rec_t* undo_rec; + dulint roll_ptr; + dulint undo_no; + heap = mem_heap_create(1024); + + /* If we have high-granularity consistent read view and + creating transaction of the view is the same as trx_id in + the record we see this record only in the case when + undo_no of the record is < undo_no in the view. */ + + if (view->type == VIEW_HIGH_GRANULARITY + && ut_dulint_cmp(view->creator_trx_id, trx_id) == 0) { + + roll_ptr = row_get_rec_roll_ptr(version, index, + *offsets); + undo_rec = trx_undo_get_undo_rec_low(roll_ptr, heap); + undo_no = trx_undo_rec_get_undo_no(undo_rec); + mem_heap_empty(heap); + + if (ut_dulint_cmp(view->undo_no, undo_no) > 0) { + /* The view already sees this version: we can + copy it to in_heap and return */ + + buf = mem_heap_alloc(in_heap, + rec_offs_size(*offsets)); + *old_vers = rec_copy(buf, version, *offsets); + rec_offs_make_valid(*old_vers, index, + *offsets); + err = DB_SUCCESS; + + break; + } + } + + err = trx_undo_prev_version_build(rec, mtr, version, index, + *offsets, heap, + &prev_version); + if (heap2) { + mem_heap_free(heap2); /* free version */ + } + + if (err != DB_SUCCESS) { + break; + } + + if (prev_version == NULL) { + /* It was a freshly inserted version */ + *old_vers = NULL; + err = DB_SUCCESS; + + break; + } + + *offsets = rec_get_offsets(prev_version, index, *offsets, + ULINT_UNDEFINED, offset_heap); + + trx_id = row_get_rec_trx_id(prev_version, index, *offsets); + + if (read_view_sees_trx_id(view, trx_id)) { + + /* The view already sees this version: we can copy + it to in_heap and return */ + + buf = mem_heap_alloc(in_heap, rec_offs_size(*offsets)); + *old_vers = rec_copy(buf, prev_version, *offsets); + rec_offs_make_valid(*old_vers, index, *offsets); + err = DB_SUCCESS; + + break; + } + + version = prev_version; + }/* for (;;) */ + + mem_heap_free(heap); + rw_lock_s_unlock(&(purge_sys->latch)); + + return(err); +} + +/********************************************************************* +Constructs the last committed version of a clustered index record, +which should be seen by a semi-consistent read. */ +UNIV_INTERN +ulint +row_vers_build_for_semi_consistent_read( +/*====================================*/ + /* out: DB_SUCCESS or DB_MISSING_HISTORY */ + const rec_t* rec, /* in: record in a clustered index; the + caller must have a latch on the page; this + latch locks the top of the stack of versions + of this records */ + mtr_t* mtr, /* in: mtr holding the latch on rec */ + dict_index_t* index, /* in: the clustered index */ + ulint** offsets,/* in/out: offsets returned by + rec_get_offsets(rec, index) */ + mem_heap_t** offset_heap,/* in/out: memory heap from which + the offsets are allocated */ + mem_heap_t* in_heap,/* in: memory heap from which the memory for + *old_vers is allocated; memory for possible + intermediate versions is allocated and freed + locally within the function */ + const rec_t** old_vers)/* out: rec, old version, or NULL if the + record does not exist in the view, that is, + it was freshly inserted afterwards */ +{ + const rec_t* version; + mem_heap_t* heap = NULL; + byte* buf; + ulint err; + dulint rec_trx_id = ut_dulint_zero; + + ut_ad(dict_index_is_clust(index)); + ut_ad(mtr_memo_contains_page(mtr, rec, MTR_MEMO_PAGE_X_FIX) + || mtr_memo_contains_page(mtr, rec, MTR_MEMO_PAGE_S_FIX)); +#ifdef UNIV_SYNC_DEBUG + ut_ad(!rw_lock_own(&(purge_sys->latch), RW_LOCK_SHARED)); +#endif /* UNIV_SYNC_DEBUG */ + + ut_ad(rec_offs_validate(rec, index, *offsets)); + + rw_lock_s_lock(&(purge_sys->latch)); + /* The S-latch on purge_sys prevents the purge view from + changing. Thus, if we have an uncommitted transaction at + this point, then purge cannot remove its undo log even if + the transaction could commit now. */ + + version = rec; + + for (;;) { + trx_t* version_trx; + mem_heap_t* heap2; + rec_t* prev_version; + dulint version_trx_id; + + version_trx_id = row_get_rec_trx_id(version, index, *offsets); + if (rec == version) { + rec_trx_id = version_trx_id; + } + + mutex_enter(&kernel_mutex); + version_trx = trx_get_on_id(version_trx_id); + mutex_exit(&kernel_mutex); + + if (!version_trx + || version_trx->conc_state == TRX_NOT_STARTED + || version_trx->conc_state == TRX_COMMITTED_IN_MEMORY) { + + /* We found a version that belongs to a + committed transaction: return it. */ + + if (rec == version) { + *old_vers = rec; + err = DB_SUCCESS; + break; + } + + /* We assume that a rolled-back transaction stays in + TRX_ACTIVE state until all the changes have been + rolled back and the transaction is removed from + the global list of transactions. */ + + if (!ut_dulint_cmp(rec_trx_id, version_trx_id)) { + /* The transaction was committed while + we searched for earlier versions. + Return the current version as a + semi-consistent read. */ + + version = rec; + *offsets = rec_get_offsets(version, + index, *offsets, + ULINT_UNDEFINED, + offset_heap); + } + + buf = mem_heap_alloc(in_heap, rec_offs_size(*offsets)); + *old_vers = rec_copy(buf, version, *offsets); + rec_offs_make_valid(*old_vers, index, *offsets); + err = DB_SUCCESS; + + break; + } + + heap2 = heap; + heap = mem_heap_create(1024); + + err = trx_undo_prev_version_build(rec, mtr, version, index, + *offsets, heap, + &prev_version); + if (heap2) { + mem_heap_free(heap2); /* free version */ + } + + if (UNIV_UNLIKELY(err != DB_SUCCESS)) { + break; + } + + if (prev_version == NULL) { + /* It was a freshly inserted version */ + *old_vers = NULL; + err = DB_SUCCESS; + + break; + } + + version = prev_version; + *offsets = rec_get_offsets(version, index, *offsets, + ULINT_UNDEFINED, offset_heap); + }/* for (;;) */ + + if (heap) { + mem_heap_free(heap); + } + rw_lock_s_unlock(&(purge_sys->latch)); + + return(err); +} === added directory 'storage/xtradb/scripts' === added file 'storage/xtradb/scripts/install_innodb_plugins.sql' --- a/storage/xtradb/scripts/install_innodb_plugins.sql 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/scripts/install_innodb_plugins.sql 2009-01-29 16:54:13 +0000 @@ -0,0 +1,14 @@ +-- execute these to install InnoDB if it is built as a dynamic plugin +INSTALL PLUGIN innodb SONAME 'ha_innodb.so'; +INSTALL PLUGIN innodb_trx SONAME 'ha_innodb.so'; +INSTALL PLUGIN innodb_locks SONAME 'ha_innodb.so'; +INSTALL PLUGIN innodb_lock_waits SONAME 'ha_innodb.so'; +INSTALL PLUGIN innodb_cmp SONAME 'ha_innodb.so'; +INSTALL PLUGIN innodb_cmp_reset SONAME 'ha_innodb.so'; +INSTALL PLUGIN innodb_cmpmem SONAME 'ha_innodb.so'; +INSTALL PLUGIN innodb_cmpmem_reset SONAME 'ha_innodb.so'; +INSTALL PLUGIN XTRADB_ENHANCEMENTS SONAME 'ha_innodb.so'; +INSTALL PLUGIN INNODB_BUFFER_POOL_PAGES SONAME 'ha_innodb.so'; +INSTALL PLUGIN INNODB_BUFFER_POOL_PAGES_BLOB SONAME 'ha_innodb.so'; +INSTALL PLUGIN INNODB_BUFFER_POOL_PAGES_INDEX SONAME 'ha_innodb.so'; +INSTALL PLUGIN innodb_rseg SONAME 'ha_innodb.so'; === added file 'storage/xtradb/scripts/install_innodb_plugins_win.sql' --- a/storage/xtradb/scripts/install_innodb_plugins_win.sql 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/scripts/install_innodb_plugins_win.sql 2008-12-03 05:06:00 +0000 @@ -0,0 +1,9 @@ +-- execute these to install InnoDB if it is built as a dynamic plugin +INSTALL PLUGIN innodb SONAME 'ha_innodb.dll'; +INSTALL PLUGIN innodb_trx SONAME 'ha_innodb.dll'; +INSTALL PLUGIN innodb_locks SONAME 'ha_innodb.dll'; +INSTALL PLUGIN innodb_lock_waits SONAME 'ha_innodb.dll'; +INSTALL PLUGIN innodb_cmp SONAME 'ha_innodb.dll'; +INSTALL PLUGIN innodb_cmp_reset SONAME 'ha_innodb.dll'; +INSTALL PLUGIN innodb_cmpmem SONAME 'ha_innodb.dll'; +INSTALL PLUGIN innodb_cmpmem_reset SONAME 'ha_innodb.dll'; === added directory 'storage/xtradb/srv' === added file 'storage/xtradb/srv/srv0que.c' --- a/storage/xtradb/srv/srv0que.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/srv/srv0que.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,126 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Server query execution + +Created 6/5/1996 Heikki Tuuri +*******************************************************/ + +#include "srv0que.h" + +#include "srv0srv.h" +#include "sync0sync.h" +#include "os0thread.h" +#include "usr0sess.h" +#include "que0que.h" + +/************************************************************************** +Checks if there is work to do in the server task queue. If there is, the +thread starts processing a task. Before leaving, it again checks the task +queue and picks a new task if any exists. This is called by a SRV_WORKER +thread. */ +UNIV_INTERN +void +srv_que_task_queue_check(void) +/*==========================*/ +{ + que_thr_t* thr; + + for (;;) { + mutex_enter(&kernel_mutex); + + thr = UT_LIST_GET_FIRST(srv_sys->tasks); + + if (thr == NULL) { + mutex_exit(&kernel_mutex); + + return; + } + + UT_LIST_REMOVE(queue, srv_sys->tasks, thr); + + mutex_exit(&kernel_mutex); + + que_run_threads(thr); + } +} + +/************************************************************************** +Performs round-robin on the server tasks. This is called by a SRV_WORKER +thread every second or so. */ +UNIV_INTERN +que_thr_t* +srv_que_round_robin( +/*================*/ + /* out: the new (may be == thr) query thread + to run */ + que_thr_t* thr) /* in: query thread */ +{ + que_thr_t* new_thr; + + ut_ad(thr); + ut_ad(thr->state == QUE_THR_RUNNING); + + mutex_enter(&kernel_mutex); + + UT_LIST_ADD_LAST(queue, srv_sys->tasks, thr); + + new_thr = UT_LIST_GET_FIRST(srv_sys->tasks); + + mutex_exit(&kernel_mutex); + + return(new_thr); +} + +/************************************************************************** +Enqueues a task to server task queue and releases a worker thread, if there +is a suspended one. */ +UNIV_INTERN +void +srv_que_task_enqueue_low( +/*=====================*/ + que_thr_t* thr) /* in: query thread */ +{ + ut_ad(thr); + ut_ad(mutex_own(&kernel_mutex)); + + UT_LIST_ADD_LAST(queue, srv_sys->tasks, thr); + + srv_release_threads(SRV_WORKER, 1); +} + +/************************************************************************** +Enqueues a task to server task queue and releases a worker thread, if there +is a suspended one. */ +UNIV_INTERN +void +srv_que_task_enqueue( +/*=================*/ + que_thr_t* thr) /* in: query thread */ +{ + ut_ad(thr); + + ut_a(0); /* Under MySQL this is never called */ + + mutex_enter(&kernel_mutex); + + srv_que_task_enqueue_low(thr); + + mutex_exit(&kernel_mutex); +} === added file 'storage/xtradb/srv/srv0srv.c' --- a/storage/xtradb/srv/srv0srv.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/srv/srv0srv.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,2814 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. +Copyright (c) 2008, Google Inc. + +Portions of this file contain modifications contributed and copyrighted by +Google, Inc. Those modifications are gratefully acknowledged and are described +briefly in the InnoDB documentation. The contributions by Google are +incorporated with their permission, and subject to the conditions contained in +the file COPYING.Google. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +The database server main program + +NOTE: SQL Server 7 uses something which the documentation +calls user mode scheduled threads (UMS threads). One such +thread is usually allocated per processor. Win32 +documentation does not know any UMS threads, which suggests +that the concept is internal to SQL Server 7. It may mean that +SQL Server 7 does all the scheduling of threads itself, even +in i/o waits. We should maybe modify InnoDB to use the same +technique, because thread switches within NT may be too slow. + +SQL Server 7 also mentions fibers, which are cooperatively +scheduled threads. They can boost performance by 5 %, +according to the Delaney and Soukup's book. + +Windows 2000 will have something called thread pooling +(see msdn website), which we could possibly use. + +Another possibility could be to use some very fast user space +thread library. This might confuse NT though. + +Created 10/8/1995 Heikki Tuuri +*******************************************************/ + +/* Dummy comment */ +#include "srv0srv.h" + +#include "ut0mem.h" +#include "ut0ut.h" +#include "os0proc.h" +#include "mem0mem.h" +#include "mem0pool.h" +#include "sync0sync.h" +#include "thr0loc.h" +#include "que0que.h" +#include "srv0que.h" +#include "log0recv.h" +#include "pars0pars.h" +#include "usr0sess.h" +#include "lock0lock.h" +#include "trx0purge.h" +#include "ibuf0ibuf.h" +#include "buf0flu.h" +#include "buf0lru.h" +#include "btr0sea.h" +#include "dict0load.h" +#include "dict0boot.h" +#include "srv0start.h" +#include "row0mysql.h" +#include "ha_prototypes.h" +#include "trx0i_s.h" + +/* This is set to TRUE if the MySQL user has set it in MySQL; currently +affects only FOREIGN KEY definition parsing */ +UNIV_INTERN ibool srv_lower_case_table_names = FALSE; + +/* The following counter is incremented whenever there is some user activity +in the server */ +UNIV_INTERN ulint srv_activity_count = 0; + +/* The following is the maximum allowed duration of a lock wait. */ +UNIV_INTERN ulint srv_fatal_semaphore_wait_threshold = 600; + +/* How much data manipulation language (DML) statements need to be delayed, +in microseconds, in order to reduce the lagging of the purge thread. */ +UNIV_INTERN ulint srv_dml_needed_delay = 0; + +UNIV_INTERN ibool srv_lock_timeout_and_monitor_active = FALSE; +UNIV_INTERN ibool srv_error_monitor_active = FALSE; + +UNIV_INTERN const char* srv_main_thread_op_info = ""; + +/* Prefix used by MySQL to indicate pre-5.1 table name encoding */ +UNIV_INTERN const char srv_mysql50_table_name_prefix[9] = "#mysql50#"; + +/* Server parameters which are read from the initfile */ + +/* The following three are dir paths which are catenated before file +names, where the file name itself may also contain a path */ + +UNIV_INTERN char* srv_data_home = NULL; +#ifdef UNIV_LOG_ARCHIVE +UNIV_INTERN char* srv_arch_dir = NULL; +#endif /* UNIV_LOG_ARCHIVE */ + +/* store to its own file each table created by an user; data +dictionary tables are in the system tablespace 0 */ +UNIV_INTERN my_bool srv_file_per_table; +/* The file format to use on new *.ibd files. */ +UNIV_INTERN ulint srv_file_format = 0; +/* Whether to check file format during startup a value of +DICT_TF_FORMAT_MAX + 1 means no checking ie. FALSE. The default is to +set it to the highest format we support. */ +UNIV_INTERN ulint srv_check_file_format_at_startup = DICT_TF_FORMAT_MAX; + +#if DICT_TF_FORMAT_51 +# error "DICT_TF_FORMAT_51 must be 0!" +#endif +/* Place locks to records only i.e. do not use next-key locking except +on duplicate key checking and foreign key checking */ +UNIV_INTERN ibool srv_locks_unsafe_for_binlog = FALSE; + +UNIV_INTERN ulint srv_n_data_files = 0; +UNIV_INTERN char** srv_data_file_names = NULL; +/* size in database pages */ +UNIV_INTERN ulint* srv_data_file_sizes = NULL; + +UNIV_INTERN ibool srv_extra_undoslots = FALSE; + +/* if TRUE, then we auto-extend the last data file */ +UNIV_INTERN ibool srv_auto_extend_last_data_file = FALSE; +/* if != 0, this tells the max size auto-extending may increase the +last data file size */ +UNIV_INTERN ulint srv_last_file_size_max = 0; +/* If the last data file is auto-extended, we add this +many pages to it at a time */ +UNIV_INTERN ulong srv_auto_extend_increment = 8; +UNIV_INTERN ulint* srv_data_file_is_raw_partition = NULL; + +/* If the following is TRUE we do not allow inserts etc. This protects +the user from forgetting the 'newraw' keyword to my.cnf */ + +UNIV_INTERN ibool srv_created_new_raw = FALSE; + +UNIV_INTERN char** srv_log_group_home_dirs = NULL; + +UNIV_INTERN ulint srv_n_log_groups = ULINT_MAX; +UNIV_INTERN ulint srv_n_log_files = ULINT_MAX; +/* size in database pages */ +UNIV_INTERN ulint srv_log_file_size = ULINT_MAX; +/* size in database pages */ +UNIV_INTERN ulint srv_log_buffer_size = ULINT_MAX; +UNIV_INTERN ulong srv_flush_log_at_trx_commit = 1; + +UNIV_INTERN ulint srv_show_locks_held = 10; +UNIV_INTERN ulint srv_show_verbose_locks = 0; + + +/* The sort order table of the MySQL latin1_swedish_ci character set +collation */ +UNIV_INTERN const byte* srv_latin1_ordering; + +/* use os/external memory allocator */ +UNIV_INTERN my_bool srv_use_sys_malloc = TRUE; +/* requested size in kilobytes */ +UNIV_INTERN ulint srv_buf_pool_size = ULINT_MAX; +/* previously requested size */ +UNIV_INTERN ulint srv_buf_pool_old_size; +/* current size in kilobytes */ +UNIV_INTERN ulint srv_buf_pool_curr_size = 0; +/* size in bytes */ +UNIV_INTERN ulint srv_mem_pool_size = ULINT_MAX; +UNIV_INTERN ulint srv_lock_table_size = ULINT_MAX; + +UNIV_INTERN ulint srv_n_file_io_threads = ULINT_MAX; +UNIV_INTERN ulint srv_n_read_io_threads = 1; +UNIV_INTERN ulint srv_n_write_io_threads = 1; + +#ifdef UNIV_LOG_ARCHIVE +UNIV_INTERN ibool srv_log_archive_on = FALSE; +UNIV_INTERN ibool srv_archive_recovery = 0; +UNIV_INTERN ib_uint64_t srv_archive_recovery_limit_lsn; +#endif /* UNIV_LOG_ARCHIVE */ + +/* This parameter is used to throttle the number of insert buffers that are +merged in a batch. By increasing this parameter on a faster disk you can +possibly reduce the number of I/O operations performed to complete the +merge operation. The value of this parameter is used as is by the +background loop when the system is idle (low load), on a busy system +the parameter is scaled down by a factor of 4, this is to avoid putting +a heavier load on the I/O sub system. */ + +UNIV_INTERN ulong srv_insert_buffer_batch_size = 20; + +UNIV_INTERN char* srv_file_flush_method_str = NULL; +UNIV_INTERN ulint srv_unix_file_flush_method = SRV_UNIX_FSYNC; +UNIV_INTERN ulint srv_win_file_flush_method = SRV_WIN_IO_UNBUFFERED; + +UNIV_INTERN ulint srv_max_n_open_files = 300; + +/* The InnoDB main thread tries to keep the ratio of modified pages +in the buffer pool to all database pages in the buffer pool smaller than +the following number. But it is not guaranteed that the value stays below +that during a time of heavy update/insert activity. */ + +UNIV_INTERN ulong srv_max_buf_pool_modified_pct = 90; + +/* variable counts amount of data read in total (in bytes) */ +UNIV_INTERN ulint srv_data_read = 0; + +/* here we count the amount of data written in total (in bytes) */ +UNIV_INTERN ulint srv_data_written = 0; + +/* the number of the log write requests done */ +UNIV_INTERN ulint srv_log_write_requests = 0; + +/* the number of physical writes to the log performed */ +UNIV_INTERN ulint srv_log_writes = 0; + +/* amount of data written to the log files in bytes */ +UNIV_INTERN ulint srv_os_log_written = 0; + +/* amount of writes being done to the log files */ +UNIV_INTERN ulint srv_os_log_pending_writes = 0; + +/* we increase this counter, when there we don't have enough space in the +log buffer and have to flush it */ +UNIV_INTERN ulint srv_log_waits = 0; + +/* this variable counts the amount of times, when the doublewrite buffer +was flushed */ +UNIV_INTERN ulint srv_dblwr_writes = 0; + +/* here we store the number of pages that have been flushed to the +doublewrite buffer */ +UNIV_INTERN ulint srv_dblwr_pages_written = 0; + +/* in this variable we store the number of write requests issued */ +UNIV_INTERN ulint srv_buf_pool_write_requests = 0; + +/* here we store the number of times when we had to wait for a free page +in the buffer pool. It happens when the buffer pool is full and we need +to make a flush, in order to be able to read or create a page. */ +UNIV_INTERN ulint srv_buf_pool_wait_free = 0; + +/* variable to count the number of pages that were written from buffer +pool to the disk */ +UNIV_INTERN ulint srv_buf_pool_flushed = 0; + +/* variable to count the number of buffer pool reads that led to the +reading of a disk page */ +UNIV_INTERN ulint srv_buf_pool_reads = 0; + +/* variable to count the number of sequential read-aheads */ +UNIV_INTERN ulint srv_read_ahead_seq = 0; + +/* variable to count the number of random read-aheads */ +UNIV_INTERN ulint srv_read_ahead_rnd = 0; + +/* structure to pass status variables to MySQL */ +UNIV_INTERN export_struc export_vars; + +/* If the following is != 0 we do not allow inserts etc. This protects +the user from forgetting the innodb_force_recovery keyword to my.cnf */ + +UNIV_INTERN ulint srv_force_recovery = 0; +/*-----------------------*/ +/* We are prepared for a situation that we have this many threads waiting for +a semaphore inside InnoDB. innobase_start_or_create_for_mysql() sets the +value. */ + +UNIV_INTERN ulint srv_max_n_threads = 0; + +/* The following controls how many threads we let inside InnoDB concurrently: +threads waiting for locks are not counted into the number because otherwise +we could get a deadlock. MySQL creates a thread for each user session, and +semaphore contention and convoy problems can occur withput this restriction. +Value 10 should be good if there are less than 4 processors + 4 disks in the +computer. Bigger computers need bigger values. Value 0 will disable the +concurrency check. */ + +UNIV_INTERN ulong srv_thread_concurrency = 0; +UNIV_INTERN ulong srv_commit_concurrency = 0; + +/* this mutex protects srv_conc data structures */ +UNIV_INTERN os_fast_mutex_t srv_conc_mutex; +/* number of transactions that have declared_to_be_inside_innodb set. +It used to be a non-error for this value to drop below zero temporarily. +This is no longer true. We'll, however, keep the lint datatype to add +assertions to catch any corner cases that we may have missed. */ +UNIV_INTERN lint srv_conc_n_threads = 0; +/* number of OS threads waiting in the FIFO for a permission to enter +InnoDB */ +UNIV_INTERN ulint srv_conc_n_waiting_threads = 0; + +typedef struct srv_conc_slot_struct srv_conc_slot_t; +struct srv_conc_slot_struct{ + os_event_t event; /* event to wait */ + ibool reserved; /* TRUE if slot + reserved */ + ibool wait_ended; /* TRUE when another + thread has already set + the event and the + thread in this slot is + free to proceed; but + reserved may still be + TRUE at that point */ + UT_LIST_NODE_T(srv_conc_slot_t) srv_conc_queue; /* queue node */ +}; + +/* queue of threads waiting to get in */ +UNIV_INTERN UT_LIST_BASE_NODE_T(srv_conc_slot_t) srv_conc_queue; +/* array of wait slots */ +UNIV_INTERN srv_conc_slot_t* srv_conc_slots; + +/* Number of times a thread is allowed to enter InnoDB within the same +SQL query after it has once got the ticket at srv_conc_enter_innodb */ +#define SRV_FREE_TICKETS_TO_ENTER srv_n_free_tickets_to_enter +#define SRV_THREAD_SLEEP_DELAY srv_thread_sleep_delay +/*-----------------------*/ +/* If the following is set to 1 then we do not run purge and insert buffer +merge to completion before shutdown. If it is set to 2, do not even flush the +buffer pool to data files at the shutdown: we effectively 'crash' +InnoDB (but lose no committed transactions). */ +UNIV_INTERN ulint srv_fast_shutdown = 0; + +/* Generate a innodb_status.<pid> file */ +UNIV_INTERN ibool srv_innodb_status = FALSE; + +/* When estimating number of different key values in an index, sample +this many index pages */ +UNIV_INTERN unsigned long long srv_stats_sample_pages = 8; + +UNIV_INTERN ibool srv_use_doublewrite_buf = TRUE; +UNIV_INTERN ibool srv_use_checksums = TRUE; + +UNIV_INTERN ibool srv_set_thread_priorities = TRUE; +UNIV_INTERN int srv_query_thread_priority = 0; + +UNIV_INTERN ulong srv_replication_delay = 0; + +UNIV_INTERN ulint srv_io_capacity = 100; + +/* Returns the number of IO operations that is X percent of the capacity. +PCT_IO(5) -> returns the number of IO operations that is 5% of the max +where max is srv_io_capacity. */ +#define PCT_IO(pct) ((ulint) (srv_io_capacity * ((double) pct / 100.0))) + +UNIV_INTERN long long srv_ibuf_max_size = 0; +UNIV_INTERN ulint srv_ibuf_active_contract = 0; /* 0:disable 1:enable */ +UNIV_INTERN ulint srv_ibuf_accel_rate = 100; +#define PCT_IBUF_IO(pct) ((ulint) (srv_io_capacity * srv_ibuf_accel_rate * ((double) pct / 10000.0))) + +UNIV_INTERN ulint srv_flush_neighbor_pages = 1; /* 0:disable 1:enable */ + +UNIV_INTERN ulint srv_enable_unsafe_group_commit = 0; /* 0:disable 1:enable */ +UNIV_INTERN ulint srv_read_ahead = 3; /* 1: random 2: linear 3: Both */ +UNIV_INTERN ulint srv_adaptive_checkpoint = 0; /* 0:disable 1:enable */ + +UNIV_INTERN ulint srv_extra_rsegments = 0; /* extra rseg for users */ +/*-------------------------------------------*/ +UNIV_INTERN ulong srv_n_spin_wait_rounds = 20; +UNIV_INTERN ulong srv_n_free_tickets_to_enter = 500; +UNIV_INTERN ulong srv_thread_sleep_delay = 10000; +UNIV_INTERN ulint srv_spin_wait_delay = 5; +UNIV_INTERN ibool srv_priority_boost = TRUE; + +#ifdef UNIV_DEBUG +UNIV_INTERN ibool srv_print_thread_releases = FALSE; +UNIV_INTERN ibool srv_print_lock_waits = FALSE; +UNIV_INTERN ibool srv_print_buf_io = FALSE; +UNIV_INTERN ibool srv_print_log_io = FALSE; +UNIV_INTERN ibool srv_print_latch_waits = FALSE; +#endif /* UNIV_DEBUG */ + +UNIV_INTERN ulint srv_n_rows_inserted = 0; +UNIV_INTERN ulint srv_n_rows_updated = 0; +UNIV_INTERN ulint srv_n_rows_deleted = 0; +UNIV_INTERN ulint srv_n_rows_read = 0; +#ifndef UNIV_HOTBACKUP +static ulint srv_n_rows_inserted_old = 0; +static ulint srv_n_rows_updated_old = 0; +static ulint srv_n_rows_deleted_old = 0; +static ulint srv_n_rows_read_old = 0; +#endif /* !UNIV_HOTBACKUP */ + +UNIV_INTERN ulint srv_n_lock_wait_count = 0; +UNIV_INTERN ulint srv_n_lock_wait_current_count = 0; +UNIV_INTERN ib_int64_t srv_n_lock_wait_time = 0; +UNIV_INTERN ulint srv_n_lock_max_wait_time = 0; + + +/* + Set the following to 0 if you want InnoDB to write messages on + stderr on startup/shutdown +*/ +UNIV_INTERN ibool srv_print_verbose_log = TRUE; +UNIV_INTERN ibool srv_print_innodb_monitor = FALSE; +UNIV_INTERN ibool srv_print_innodb_lock_monitor = FALSE; +UNIV_INTERN ibool srv_print_innodb_tablespace_monitor = FALSE; +UNIV_INTERN ibool srv_print_innodb_table_monitor = FALSE; + +/* Array of English strings describing the current state of an +i/o handler thread */ + +UNIV_INTERN const char* srv_io_thread_op_info[SRV_MAX_N_IO_THREADS]; +UNIV_INTERN const char* srv_io_thread_function[SRV_MAX_N_IO_THREADS]; + +UNIV_INTERN time_t srv_last_monitor_time; + +UNIV_INTERN mutex_t srv_innodb_monitor_mutex; + +/* Mutex for locking srv_monitor_file */ +UNIV_INTERN mutex_t srv_monitor_file_mutex; +/* Temporary file for innodb monitor output */ +UNIV_INTERN FILE* srv_monitor_file; +/* Mutex for locking srv_dict_tmpfile. +This mutex has a very high rank; threads reserving it should not +be holding any InnoDB latches. */ +UNIV_INTERN mutex_t srv_dict_tmpfile_mutex; +/* Temporary file for output from the data dictionary */ +UNIV_INTERN FILE* srv_dict_tmpfile; +/* Mutex for locking srv_misc_tmpfile. +This mutex has a very low rank; threads reserving it should not +acquire any further latches or sleep before releasing this one. */ +UNIV_INTERN mutex_t srv_misc_tmpfile_mutex; +/* Temporary file for miscellanous diagnostic output */ +UNIV_INTERN FILE* srv_misc_tmpfile; + +UNIV_INTERN ulint srv_main_thread_process_no = 0; +UNIV_INTERN ulint srv_main_thread_id = 0; + +/* + IMPLEMENTATION OF THE SERVER MAIN PROGRAM + ========================================= + +There is the following analogue between this database +server and an operating system kernel: + +DB concept equivalent OS concept +---------- --------------------- +transaction -- process; + +query thread -- thread; + +lock -- semaphore; + +transaction set to +the rollback state -- kill signal delivered to a process; + +kernel -- kernel; + +query thread execution: +(a) without kernel mutex +reserved -- process executing in user mode; +(b) with kernel mutex reserved + -- process executing in kernel mode; + +The server is controlled by a master thread which runs at +a priority higher than normal, that is, higher than user threads. +It sleeps most of the time, and wakes up, say, every 300 milliseconds, +to check whether there is anything happening in the server which +requires intervention of the master thread. Such situations may be, +for example, when flushing of dirty blocks is needed in the buffer +pool or old version of database rows have to be cleaned away. + +The threads which we call user threads serve the queries of +the clients and input from the console of the server. +They run at normal priority. The server may have several +communications endpoints. A dedicated set of user threads waits +at each of these endpoints ready to receive a client request. +Each request is taken by a single user thread, which then starts +processing and, when the result is ready, sends it to the client +and returns to wait at the same endpoint the thread started from. + +So, we do not have dedicated communication threads listening at +the endpoints and dealing the jobs to dedicated worker threads. +Our architecture saves one thread swithch per request, compared +to the solution with dedicated communication threads +which amounts to 15 microseconds on 100 MHz Pentium +running NT. If the client +is communicating over a network, this saving is negligible, but +if the client resides in the same machine, maybe in an SMP machine +on a different processor from the server thread, the saving +can be important as the threads can communicate over shared +memory with an overhead of a few microseconds. + +We may later implement a dedicated communication thread solution +for those endpoints which communicate over a network. + +Our solution with user threads has two problems: for each endpoint +there has to be a number of listening threads. If there are many +communication endpoints, it may be difficult to set the right number +of concurrent threads in the system, as many of the threads +may always be waiting at less busy endpoints. Another problem +is queuing of the messages, as the server internally does not +offer any queue for jobs. + +Another group of user threads is intended for splitting the +queries and processing them in parallel. Let us call these +parallel communication threads. These threads are waiting for +parallelized tasks, suspended on event semaphores. + +A single user thread waits for input from the console, +like a command to shut the database. + +Utility threads are a different group of threads which takes +care of the buffer pool flushing and other, mainly background +operations, in the server. +Some of these utility threads always run at a lower than normal +priority, so that they are always in background. Some of them +may dynamically boost their priority by the pri_adjust function, +even to higher than normal priority, if their task becomes urgent. +The running of utilities is controlled by high- and low-water marks +of urgency. The urgency may be measured by the number of dirty blocks +in the buffer pool, in the case of the flush thread, for example. +When the high-water mark is exceeded, an utility starts running, until +the urgency drops under the low-water mark. Then the utility thread +suspend itself to wait for an event. The master thread is +responsible of signaling this event when the utility thread is +again needed. + +For each individual type of utility, some threads always remain +at lower than normal priority. This is because pri_adjust is implemented +so that the threads at normal or higher priority control their +share of running time by calling sleep. Thus, if the load of the +system sudenly drops, these threads cannot necessarily utilize +the system fully. The background priority threads make up for this, +starting to run when the load drops. + +When there is no activity in the system, also the master thread +suspends itself to wait for an event making +the server totally silent. The responsibility to signal this +event is on the user thread which again receives a message +from a client. + +There is still one complication in our server design. If a +background utility thread obtains a resource (e.g., mutex) needed by a user +thread, and there is also some other user activity in the system, +the user thread may have to wait indefinitely long for the +resource, as the OS does not schedule a background thread if +there is some other runnable user thread. This problem is called +priority inversion in real-time programming. + +One solution to the priority inversion problem would be to +keep record of which thread owns which resource and +in the above case boost the priority of the background thread +so that it will be scheduled and it can release the resource. +This solution is called priority inheritance in real-time programming. +A drawback of this solution is that the overhead of acquiring a mutex +increases slightly, maybe 0.2 microseconds on a 100 MHz Pentium, because +the thread has to call os_thread_get_curr_id. +This may be compared to 0.5 microsecond overhead for a mutex lock-unlock +pair. Note that the thread +cannot store the information in the resource, say mutex, itself, +because competing threads could wipe out the information if it is +stored before acquiring the mutex, and if it stored afterwards, +the information is outdated for the time of one machine instruction, +at least. (To be precise, the information could be stored to +lock_word in mutex if the machine supports atomic swap.) + +The above solution with priority inheritance may become actual in the +future, but at the moment we plan to implement a more coarse solution, +which could be called a global priority inheritance. If a thread +has to wait for a long time, say 300 milliseconds, for a resource, +we just guess that it may be waiting for a resource owned by a background +thread, and boost the the priority of all runnable background threads +to the normal level. The background threads then themselves adjust +their fixed priority back to background after releasing all resources +they had (or, at some fixed points in their program code). + +What is the performance of the global priority inheritance solution? +We may weigh the length of the wait time 300 milliseconds, during +which the system processes some other thread +to the cost of boosting the priority of each runnable background +thread, rescheduling it, and lowering the priority again. +On 100 MHz Pentium + NT this overhead may be of the order 100 +microseconds per thread. So, if the number of runnable background +threads is not very big, say < 100, the cost is tolerable. +Utility threads probably will access resources used by +user threads not very often, so collisions of user threads +to preempted utility threads should not happen very often. + +The thread table contains +information of the current status of each thread existing in the system, +and also the event semaphores used in suspending the master thread +and utility and parallel communication threads when they have nothing to do. +The thread table can be seen as an analogue to the process table +in a traditional Unix implementation. + +The thread table is also used in the global priority inheritance +scheme. This brings in one additional complication: threads accessing +the thread table must have at least normal fixed priority, +because the priority inheritance solution does not work if a background +thread is preempted while possessing the mutex protecting the thread table. +So, if a thread accesses the thread table, its priority has to be +boosted at least to normal. This priority requirement can be seen similar to +the privileged mode used when processing the kernel calls in traditional +Unix.*/ + +/* Thread slot in the thread table */ +struct srv_slot_struct{ + os_thread_id_t id; /* thread id */ + os_thread_t handle; /* thread handle */ + unsigned type:3; /* thread type: user, utility etc. */ + unsigned in_use:1; /* TRUE if this slot is in use */ + unsigned suspended:1; /* TRUE if the thread is waiting + for the event of this slot */ + ib_time_t suspend_time; /* time when the thread was + suspended */ + os_event_t event; /* event used in suspending the + thread when it has nothing to do */ + que_thr_t* thr; /* suspended query thread (only + used for MySQL threads) */ +}; + +/* Table for MySQL threads where they will be suspended to wait for locks */ +UNIV_INTERN srv_slot_t* srv_mysql_table = NULL; + +UNIV_INTERN os_event_t srv_lock_timeout_thread_event; + +UNIV_INTERN srv_sys_t* srv_sys = NULL; + +/* padding to prevent other memory update hotspots from residing on +the same memory cache line */ +UNIV_INTERN byte srv_pad1[64]; +/* mutex protecting the server, trx structs, query threads, and lock table */ +UNIV_INTERN mutex_t* kernel_mutex_temp; +/* padding to prevent other memory update hotspots from residing on +the same memory cache line */ +UNIV_INTERN byte srv_pad2[64]; + +#if 0 +/* The following three values measure the urgency of the jobs of +buffer, version, and insert threads. They may vary from 0 - 1000. +The server mutex protects all these variables. The low-water values +tell that the server can acquiesce the utility when the value +drops below this low-water mark. */ + +static ulint srv_meter[SRV_MASTER + 1]; +static ulint srv_meter_low_water[SRV_MASTER + 1]; +static ulint srv_meter_high_water[SRV_MASTER + 1]; +static ulint srv_meter_high_water2[SRV_MASTER + 1]; +static ulint srv_meter_foreground[SRV_MASTER + 1]; +#endif + +/* The following values give info about the activity going on in +the database. They are protected by the server mutex. The arrays +are indexed by the type of the thread. */ + +UNIV_INTERN ulint srv_n_threads_active[SRV_MASTER + 1]; +UNIV_INTERN ulint srv_n_threads[SRV_MASTER + 1]; + +/************************************************************************* +Sets the info describing an i/o thread current state. */ +UNIV_INTERN +void +srv_set_io_thread_op_info( +/*======================*/ + ulint i, /* in: the 'segment' of the i/o thread */ + const char* str) /* in: constant char string describing the + state */ +{ + ut_a(i < SRV_MAX_N_IO_THREADS); + + srv_io_thread_op_info[i] = str; +} + +/************************************************************************* +Accessor function to get pointer to n'th slot in the server thread +table. */ +static +srv_slot_t* +srv_table_get_nth_slot( +/*===================*/ + /* out: pointer to the slot */ + ulint index) /* in: index of the slot */ +{ + ut_a(index < OS_THREAD_MAX_N); + + return(srv_sys->threads + index); +} + +#ifndef UNIV_HOTBACKUP +/************************************************************************* +Gets the number of threads in the system. */ +UNIV_INTERN +ulint +srv_get_n_threads(void) +/*===================*/ +{ + ulint i; + ulint n_threads = 0; + + mutex_enter(&kernel_mutex); + + for (i = SRV_COM; i < SRV_MASTER + 1; i++) { + + n_threads += srv_n_threads[i]; + } + + mutex_exit(&kernel_mutex); + + return(n_threads); +} + +/************************************************************************* +Reserves a slot in the thread table for the current thread. Also creates the +thread local storage struct for the current thread. NOTE! The server mutex +has to be reserved by the caller! */ +static +ulint +srv_table_reserve_slot( +/*===================*/ + /* out: reserved slot index */ + enum srv_thread_type type) /* in: type of the thread */ +{ + srv_slot_t* slot; + ulint i; + + ut_a(type > 0); + ut_a(type <= SRV_MASTER); + + i = 0; + slot = srv_table_get_nth_slot(i); + + while (slot->in_use) { + i++; + slot = srv_table_get_nth_slot(i); + } + + ut_a(slot->in_use == FALSE); + + slot->in_use = TRUE; + slot->suspended = FALSE; + slot->type = type; + slot->id = os_thread_get_curr_id(); + slot->handle = os_thread_get_curr(); + + thr_local_create(); + + thr_local_set_slot_no(os_thread_get_curr_id(), i); + + return(i); +} + +/************************************************************************* +Suspends the calling thread to wait for the event in its thread slot. +NOTE! The server mutex has to be reserved by the caller! */ +static +os_event_t +srv_suspend_thread(void) +/*====================*/ + /* out: event for the calling thread to wait */ +{ + srv_slot_t* slot; + os_event_t event; + ulint slot_no; + enum srv_thread_type type; + + ut_ad(mutex_own(&kernel_mutex)); + + slot_no = thr_local_get_slot_no(os_thread_get_curr_id()); + + if (srv_print_thread_releases) { + fprintf(stderr, + "Suspending thread %lu to slot %lu\n", + (ulong) os_thread_get_curr_id(), (ulong) slot_no); + } + + slot = srv_table_get_nth_slot(slot_no); + + type = slot->type; + + ut_ad(type >= SRV_WORKER); + ut_ad(type <= SRV_MASTER); + + event = slot->event; + + slot->suspended = TRUE; + + ut_ad(srv_n_threads_active[type] > 0); + + srv_n_threads_active[type]--; + + os_event_reset(event); + + return(event); +} +#endif /* !UNIV_HOTBACKUP */ + +/************************************************************************* +Releases threads of the type given from suspension in the thread table. +NOTE! The server mutex has to be reserved by the caller! */ +UNIV_INTERN +ulint +srv_release_threads( +/*================*/ + /* out: number of threads + released: this may be < n if + not enough threads were + suspended at the moment */ + enum srv_thread_type type, /* in: thread type */ + ulint n) /* in: number of threads to release */ +{ + srv_slot_t* slot; + ulint i; + ulint count = 0; + + ut_ad(type >= SRV_WORKER); + ut_ad(type <= SRV_MASTER); + ut_ad(n > 0); + ut_ad(mutex_own(&kernel_mutex)); + + for (i = 0; i < OS_THREAD_MAX_N; i++) { + + slot = srv_table_get_nth_slot(i); + + if (slot->in_use && slot->type == type && slot->suspended) { + + slot->suspended = FALSE; + + srv_n_threads_active[type]++; + + os_event_set(slot->event); + + if (srv_print_thread_releases) { + fprintf(stderr, + "Releasing thread %lu type %lu" + " from slot %lu\n", + (ulong) slot->id, (ulong) type, + (ulong) i); + } + + count++; + + if (count == n) { + break; + } + } + } + + return(count); +} + +/************************************************************************* +Returns the calling thread type. */ +UNIV_INTERN +enum srv_thread_type +srv_get_thread_type(void) +/*=====================*/ + /* out: SRV_COM, ... */ +{ + ulint slot_no; + srv_slot_t* slot; + enum srv_thread_type type; + + mutex_enter(&kernel_mutex); + + slot_no = thr_local_get_slot_no(os_thread_get_curr_id()); + + slot = srv_table_get_nth_slot(slot_no); + + type = slot->type; + + ut_ad(type >= SRV_WORKER); + ut_ad(type <= SRV_MASTER); + + mutex_exit(&kernel_mutex); + + return(type); +} + +/************************************************************************* +Initializes the server. */ +UNIV_INTERN +void +srv_init(void) +/*==========*/ +{ + srv_conc_slot_t* conc_slot; + srv_slot_t* slot; + dict_table_t* table; + ulint i; + + srv_sys = mem_alloc(sizeof(srv_sys_t)); + + kernel_mutex_temp = mem_alloc(sizeof(mutex_t)); + mutex_create(&kernel_mutex, SYNC_KERNEL); + + mutex_create(&srv_innodb_monitor_mutex, SYNC_NO_ORDER_CHECK); + + srv_sys->threads = mem_alloc(OS_THREAD_MAX_N * sizeof(srv_slot_t)); + + for (i = 0; i < OS_THREAD_MAX_N; i++) { + slot = srv_table_get_nth_slot(i); + slot->in_use = FALSE; + slot->type=0; /* Avoid purify errors */ + slot->event = os_event_create(NULL); + ut_a(slot->event); + } + + srv_mysql_table = mem_alloc(OS_THREAD_MAX_N * sizeof(srv_slot_t)); + + for (i = 0; i < OS_THREAD_MAX_N; i++) { + slot = srv_mysql_table + i; + slot->in_use = FALSE; + slot->type = 0; + slot->event = os_event_create(NULL); + ut_a(slot->event); + } + + srv_lock_timeout_thread_event = os_event_create(NULL); + + for (i = 0; i < SRV_MASTER + 1; i++) { + srv_n_threads_active[i] = 0; + srv_n_threads[i] = 0; +#if 0 + srv_meter[i] = 30; + srv_meter_low_water[i] = 50; + srv_meter_high_water[i] = 100; + srv_meter_high_water2[i] = 200; + srv_meter_foreground[i] = 250; +#endif + } + + UT_LIST_INIT(srv_sys->tasks); + + /* create dummy table and index for old-style infimum and supremum */ + table = dict_mem_table_create("SYS_DUMMY1", + DICT_HDR_SPACE, 1, 0); + dict_mem_table_add_col(table, NULL, NULL, DATA_CHAR, + DATA_ENGLISH | DATA_NOT_NULL, 8); + + srv_sys->dummy_ind1 = dict_mem_index_create( + "SYS_DUMMY1", "SYS_DUMMY1", DICT_HDR_SPACE, 0, 1); + dict_index_add_col(srv_sys->dummy_ind1, table, + dict_table_get_nth_col(table, 0), 0); + srv_sys->dummy_ind1->table = table; + /* create dummy table and index for new-style infimum and supremum */ + table = dict_mem_table_create("SYS_DUMMY2", + DICT_HDR_SPACE, 1, DICT_TF_COMPACT); + dict_mem_table_add_col(table, NULL, NULL, DATA_CHAR, + DATA_ENGLISH | DATA_NOT_NULL, 8); + srv_sys->dummy_ind2 = dict_mem_index_create( + "SYS_DUMMY2", "SYS_DUMMY2", DICT_HDR_SPACE, 0, 1); + dict_index_add_col(srv_sys->dummy_ind2, table, + dict_table_get_nth_col(table, 0), 0); + srv_sys->dummy_ind2->table = table; + + /* avoid ut_ad(index->cached) in dict_index_get_n_unique_in_tree */ + srv_sys->dummy_ind1->cached = srv_sys->dummy_ind2->cached = TRUE; + + /* Init the server concurrency restriction data structures */ + + os_fast_mutex_init(&srv_conc_mutex); + + UT_LIST_INIT(srv_conc_queue); + + srv_conc_slots = mem_alloc(OS_THREAD_MAX_N * sizeof(srv_conc_slot_t)); + + for (i = 0; i < OS_THREAD_MAX_N; i++) { + conc_slot = srv_conc_slots + i; + conc_slot->reserved = FALSE; + conc_slot->event = os_event_create(NULL); + ut_a(conc_slot->event); + } + + /* Initialize some INFORMATION SCHEMA internal structures */ + trx_i_s_cache_init(trx_i_s_cache); +} + +/************************************************************************* +Frees the OS fast mutex created in srv_init(). */ +UNIV_INTERN +void +srv_free(void) +/*==========*/ +{ + os_fast_mutex_free(&srv_conc_mutex); +} + +/************************************************************************* +Initializes the synchronization primitives, memory system, and the thread +local storage. */ +UNIV_INTERN +void +srv_general_init(void) +/*==================*/ +{ + ut_mem_init(); + os_sync_init(); + sync_init(); + mem_init(srv_mem_pool_size); + thr_local_init(); +} + +/*======================= InnoDB Server FIFO queue =======================*/ + +/* Maximum allowable purge history length. <=0 means 'infinite'. */ +UNIV_INTERN ulong srv_max_purge_lag = 0; + +/************************************************************************* +Puts an OS thread to wait if there are too many concurrent threads +(>= srv_thread_concurrency) inside InnoDB. The threads wait in a FIFO queue. */ +UNIV_INTERN +void +srv_conc_enter_innodb( +/*==================*/ + trx_t* trx) /* in: transaction object associated with the + thread */ +{ + ibool has_slept = FALSE; + srv_conc_slot_t* slot = NULL; + ulint i; + + if (trx->mysql_thd != NULL + && thd_is_replication_slave_thread(trx->mysql_thd)) { + + UT_WAIT_FOR(srv_conc_n_threads + < (lint)srv_thread_concurrency, + srv_replication_delay * 1000); + + return; + } + + /* If trx has 'free tickets' to enter the engine left, then use one + such ticket */ + + if (trx->n_tickets_to_enter_innodb > 0) { + trx->n_tickets_to_enter_innodb--; + + return; + } + + os_fast_mutex_lock(&srv_conc_mutex); +retry: + if (trx->declared_to_be_inside_innodb) { + ut_print_timestamp(stderr); + fputs(" InnoDB: Error: trying to declare trx" + " to enter InnoDB, but\n" + "InnoDB: it already is declared.\n", stderr); + trx_print(stderr, trx, 0); + putc('\n', stderr); + os_fast_mutex_unlock(&srv_conc_mutex); + + return; + } + + ut_ad(srv_conc_n_threads >= 0); + + if (srv_conc_n_threads < (lint)srv_thread_concurrency) { + + srv_conc_n_threads++; + trx->declared_to_be_inside_innodb = TRUE; + trx->n_tickets_to_enter_innodb = SRV_FREE_TICKETS_TO_ENTER; + + os_fast_mutex_unlock(&srv_conc_mutex); + + return; + } + + /* If the transaction is not holding resources, let it sleep + for SRV_THREAD_SLEEP_DELAY microseconds, and try again then */ + + if (!has_slept && !trx->has_search_latch + && NULL == UT_LIST_GET_FIRST(trx->trx_locks)) { + + has_slept = TRUE; /* We let it sleep only once to avoid + starvation */ + + srv_conc_n_waiting_threads++; + + os_fast_mutex_unlock(&srv_conc_mutex); + + trx->op_info = "sleeping before joining InnoDB queue"; + + /* Peter Zaitsev suggested that we take the sleep away + altogether. But the sleep may be good in pathological + situations of lots of thread switches. Simply put some + threads aside for a while to reduce the number of thread + switches. */ + if (SRV_THREAD_SLEEP_DELAY > 0) { + os_thread_sleep(SRV_THREAD_SLEEP_DELAY); + } + + trx->op_info = ""; + + os_fast_mutex_lock(&srv_conc_mutex); + + srv_conc_n_waiting_threads--; + + goto retry; + } + + /* Too many threads inside: put the current thread to a queue */ + + for (i = 0; i < OS_THREAD_MAX_N; i++) { + slot = srv_conc_slots + i; + + if (!slot->reserved) { + + break; + } + } + + if (i == OS_THREAD_MAX_N) { + /* Could not find a free wait slot, we must let the + thread enter */ + + srv_conc_n_threads++; + trx->declared_to_be_inside_innodb = TRUE; + trx->n_tickets_to_enter_innodb = 0; + + os_fast_mutex_unlock(&srv_conc_mutex); + + return; + } + + /* Release possible search system latch this thread has */ + if (trx->has_search_latch) { + trx_search_latch_release_if_reserved(trx); + } + + /* Add to the queue */ + slot->reserved = TRUE; + slot->wait_ended = FALSE; + + UT_LIST_ADD_LAST(srv_conc_queue, srv_conc_queue, slot); + + os_event_reset(slot->event); + + srv_conc_n_waiting_threads++; + + os_fast_mutex_unlock(&srv_conc_mutex); + + /* Go to wait for the event; when a thread leaves InnoDB it will + release this thread */ + + trx->op_info = "waiting in InnoDB queue"; + + os_event_wait(slot->event); + + trx->op_info = ""; + + os_fast_mutex_lock(&srv_conc_mutex); + + srv_conc_n_waiting_threads--; + + /* NOTE that the thread which released this thread already + incremented the thread counter on behalf of this thread */ + + slot->reserved = FALSE; + + UT_LIST_REMOVE(srv_conc_queue, srv_conc_queue, slot); + + trx->declared_to_be_inside_innodb = TRUE; + trx->n_tickets_to_enter_innodb = SRV_FREE_TICKETS_TO_ENTER; + + os_fast_mutex_unlock(&srv_conc_mutex); +} + +/************************************************************************* +This lets a thread enter InnoDB regardless of the number of threads inside +InnoDB. This must be called when a thread ends a lock wait. */ +UNIV_INTERN +void +srv_conc_force_enter_innodb( +/*========================*/ + trx_t* trx) /* in: transaction object associated with the + thread */ +{ + if (UNIV_LIKELY(!srv_thread_concurrency)) { + + return; + } + + ut_ad(srv_conc_n_threads >= 0); + + os_fast_mutex_lock(&srv_conc_mutex); + + srv_conc_n_threads++; + trx->declared_to_be_inside_innodb = TRUE; + trx->n_tickets_to_enter_innodb = 1; + + os_fast_mutex_unlock(&srv_conc_mutex); +} + +/************************************************************************* +This must be called when a thread exits InnoDB in a lock wait or at the +end of an SQL statement. */ +UNIV_INTERN +void +srv_conc_force_exit_innodb( +/*=======================*/ + trx_t* trx) /* in: transaction object associated with the + thread */ +{ + srv_conc_slot_t* slot = NULL; + + if (trx->mysql_thd != NULL + && thd_is_replication_slave_thread(trx->mysql_thd)) { + + return; + } + + if (trx->declared_to_be_inside_innodb == FALSE) { + + return; + } + + os_fast_mutex_lock(&srv_conc_mutex); + + ut_ad(srv_conc_n_threads > 0); + srv_conc_n_threads--; + trx->declared_to_be_inside_innodb = FALSE; + trx->n_tickets_to_enter_innodb = 0; + + if (srv_conc_n_threads < (lint)srv_thread_concurrency) { + /* Look for a slot where a thread is waiting and no other + thread has yet released the thread */ + + slot = UT_LIST_GET_FIRST(srv_conc_queue); + + while (slot && slot->wait_ended == TRUE) { + slot = UT_LIST_GET_NEXT(srv_conc_queue, slot); + } + + if (slot != NULL) { + slot->wait_ended = TRUE; + + /* We increment the count on behalf of the released + thread */ + + srv_conc_n_threads++; + } + } + + os_fast_mutex_unlock(&srv_conc_mutex); + + if (slot != NULL) { + os_event_set(slot->event); + } +} + +/************************************************************************* +This must be called when a thread exits InnoDB. */ +UNIV_INTERN +void +srv_conc_exit_innodb( +/*=================*/ + trx_t* trx) /* in: transaction object associated with the + thread */ +{ + if (trx->n_tickets_to_enter_innodb > 0) { + /* We will pretend the thread is still inside InnoDB though it + now leaves the InnoDB engine. In this way we save + a lot of semaphore operations. srv_conc_force_exit_innodb is + used to declare the thread definitely outside InnoDB. It + should be called when there is a lock wait or an SQL statement + ends. */ + + return; + } + + srv_conc_force_exit_innodb(trx); +} + +/*========================================================================*/ + +/************************************************************************* +Normalizes init parameter values to use units we use inside InnoDB. */ +static +ulint +srv_normalize_init_values(void) +/*===========================*/ + /* out: DB_SUCCESS or error code */ +{ + ulint n; + ulint i; + + n = srv_n_data_files; + + for (i = 0; i < n; i++) { + srv_data_file_sizes[i] = srv_data_file_sizes[i] + * ((1024 * 1024) / UNIV_PAGE_SIZE); + } + + srv_last_file_size_max = srv_last_file_size_max + * ((1024 * 1024) / UNIV_PAGE_SIZE); + + srv_log_file_size = srv_log_file_size / UNIV_PAGE_SIZE; + + srv_log_buffer_size = srv_log_buffer_size / UNIV_PAGE_SIZE; + + srv_lock_table_size = 5 * (srv_buf_pool_size / UNIV_PAGE_SIZE); + + return(DB_SUCCESS); +} + +/************************************************************************* +Boots the InnoDB server. */ +UNIV_INTERN +ulint +srv_boot(void) +/*==========*/ + /* out: DB_SUCCESS or error code */ +{ + ulint err; + + /* Transform the init parameter values given by MySQL to + use units we use inside InnoDB: */ + + err = srv_normalize_init_values(); + + if (err != DB_SUCCESS) { + return(err); + } + + /* Initialize synchronization primitives, memory management, and thread + local storage */ + + srv_general_init(); + + /* Initialize this module */ + + srv_init(); + + return(DB_SUCCESS); +} + +#ifndef UNIV_HOTBACKUP +/************************************************************************* +Reserves a slot in the thread table for the current MySQL OS thread. +NOTE! The kernel mutex has to be reserved by the caller! */ +static +srv_slot_t* +srv_table_reserve_slot_for_mysql(void) +/*==================================*/ + /* out: reserved slot */ +{ + srv_slot_t* slot; + ulint i; + + ut_ad(mutex_own(&kernel_mutex)); + + i = 0; + slot = srv_mysql_table + i; + + while (slot->in_use) { + i++; + + if (i >= OS_THREAD_MAX_N) { + + ut_print_timestamp(stderr); + + fprintf(stderr, + " InnoDB: There appear to be %lu MySQL" + " threads currently waiting\n" + "InnoDB: inside InnoDB, which is the" + " upper limit. Cannot continue operation.\n" + "InnoDB: We intentionally generate" + " a seg fault to print a stack trace\n" + "InnoDB: on Linux. But first we print" + " a list of waiting threads.\n", (ulong) i); + + for (i = 0; i < OS_THREAD_MAX_N; i++) { + + slot = srv_mysql_table + i; + + fprintf(stderr, + "Slot %lu: thread id %lu, type %lu," + " in use %lu, susp %lu, time %lu\n", + (ulong) i, + (ulong) os_thread_pf(slot->id), + (ulong) slot->type, + (ulong) slot->in_use, + (ulong) slot->suspended, + (ulong) difftime(ut_time(), + slot->suspend_time)); + } + + ut_error; + } + + slot = srv_mysql_table + i; + } + + ut_a(slot->in_use == FALSE); + + slot->in_use = TRUE; + slot->id = os_thread_get_curr_id(); + slot->handle = os_thread_get_curr(); + + return(slot); +} +#endif /* !UNIV_HOTBACKUP */ + +/******************************************************************* +Puts a MySQL OS thread to wait for a lock to be released. If an error +occurs during the wait trx->error_state associated with thr is +!= DB_SUCCESS when we return. DB_LOCK_WAIT_TIMEOUT and DB_DEADLOCK +are possible errors. DB_DEADLOCK is returned if selective deadlock +resolution chose this transaction as a victim. */ +UNIV_INTERN +void +srv_suspend_mysql_thread( +/*=====================*/ + que_thr_t* thr) /* in: query thread associated with the MySQL + OS thread */ +{ +#ifndef UNIV_HOTBACKUP + srv_slot_t* slot; + os_event_t event; + double wait_time; + trx_t* trx; + ulint had_dict_lock; + ibool was_declared_inside_innodb = FALSE; + ib_int64_t start_time = 0; + ib_int64_t finish_time; + ulint diff_time; + ulint sec; + ulint ms; + ulong lock_wait_timeout; + + ut_ad(!mutex_own(&kernel_mutex)); + + trx = thr_get_trx(thr); + + os_event_set(srv_lock_timeout_thread_event); + + mutex_enter(&kernel_mutex); + + trx->error_state = DB_SUCCESS; + + if (thr->state == QUE_THR_RUNNING) { + + ut_ad(thr->is_active == TRUE); + + /* The lock has already been released or this transaction + was chosen as a deadlock victim: no need to suspend */ + + if (trx->was_chosen_as_deadlock_victim) { + + trx->error_state = DB_DEADLOCK; + trx->was_chosen_as_deadlock_victim = FALSE; + } + + mutex_exit(&kernel_mutex); + + return; + } + + ut_ad(thr->is_active == FALSE); + + slot = srv_table_reserve_slot_for_mysql(); + + event = slot->event; + + slot->thr = thr; + + os_event_reset(event); + + slot->suspend_time = ut_time(); + + if (thr->lock_state == QUE_THR_LOCK_ROW) { + srv_n_lock_wait_count++; + srv_n_lock_wait_current_count++; + + if (ut_usectime(&sec, &ms) == -1) { + start_time = -1; + } else { + start_time = (ib_int64_t) sec * 1000000 + ms; + } + } + /* Wake the lock timeout monitor thread, if it is suspended */ + + os_event_set(srv_lock_timeout_thread_event); + + mutex_exit(&kernel_mutex); + + if (trx->declared_to_be_inside_innodb) { + + was_declared_inside_innodb = TRUE; + + /* We must declare this OS thread to exit InnoDB, since a + possible other thread holding a lock which this thread waits + for must be allowed to enter, sooner or later */ + + srv_conc_force_exit_innodb(trx); + } + + had_dict_lock = trx->dict_operation_lock_mode; + + switch (had_dict_lock) { + case RW_S_LATCH: + /* Release foreign key check latch */ + row_mysql_unfreeze_data_dictionary(trx); + break; + case RW_X_LATCH: + /* Release fast index creation latch */ + row_mysql_unlock_data_dictionary(trx); + break; + } + + ut_a(trx->dict_operation_lock_mode == 0); + + /* Suspend this thread and wait for the event. */ + + os_event_wait(event); + + /* After resuming, reacquire the data dictionary latch if + necessary. */ + + switch (had_dict_lock) { + case RW_S_LATCH: + row_mysql_freeze_data_dictionary(trx); + break; + case RW_X_LATCH: + row_mysql_lock_data_dictionary(trx); + break; + } + + if (was_declared_inside_innodb) { + + /* Return back inside InnoDB */ + + srv_conc_force_enter_innodb(trx); + } + + mutex_enter(&kernel_mutex); + + /* Release the slot for others to use */ + + slot->in_use = FALSE; + + wait_time = ut_difftime(ut_time(), slot->suspend_time); + + if (thr->lock_state == QUE_THR_LOCK_ROW) { + if (ut_usectime(&sec, &ms) == -1) { + finish_time = -1; + } else { + finish_time = (ib_int64_t) sec * 1000000 + ms; + } + + diff_time = (ulint) (finish_time - start_time); + + srv_n_lock_wait_current_count--; + srv_n_lock_wait_time = srv_n_lock_wait_time + diff_time; + if (diff_time > srv_n_lock_max_wait_time && + /* only update the variable if we successfully + retrieved the start and finish times. See Bug#36819. */ + start_time != -1 && finish_time != -1) { + srv_n_lock_max_wait_time = diff_time; + } + } + + if (trx->was_chosen_as_deadlock_victim) { + + trx->error_state = DB_DEADLOCK; + trx->was_chosen_as_deadlock_victim = FALSE; + } + + mutex_exit(&kernel_mutex); + + /* InnoDB system transactions (such as the purge, and + incomplete transactions that are being rolled back after crash + recovery) will use the global value of + innodb_lock_wait_timeout, because trx->mysql_thd == NULL. */ + lock_wait_timeout = thd_lock_wait_timeout(trx->mysql_thd); + + if (lock_wait_timeout < 100000000 + && wait_time > (double) lock_wait_timeout) { + + trx->error_state = DB_LOCK_WAIT_TIMEOUT; + } +#else /* UNIV_HOTBACKUP */ + /* This function depends on MySQL code that is not included in + InnoDB Hot Backup builds. Besides, this function should never + be called in InnoDB Hot Backup. */ + ut_error; +#endif /* UNIV_HOTBACKUP */ +} + +/************************************************************************ +Releases a MySQL OS thread waiting for a lock to be released, if the +thread is already suspended. */ +UNIV_INTERN +void +srv_release_mysql_thread_if_suspended( +/*==================================*/ + que_thr_t* thr) /* in: query thread associated with the + MySQL OS thread */ +{ +#ifndef UNIV_HOTBACKUP + srv_slot_t* slot; + ulint i; + + ut_ad(mutex_own(&kernel_mutex)); + + for (i = 0; i < OS_THREAD_MAX_N; i++) { + + slot = srv_mysql_table + i; + + if (slot->in_use && slot->thr == thr) { + /* Found */ + + os_event_set(slot->event); + + return; + } + } + + /* not found */ +#else /* UNIV_HOTBACKUP */ + /* This function depends on MySQL code that is not included in + InnoDB Hot Backup builds. Besides, this function should never + be called in InnoDB Hot Backup. */ + ut_error; +#endif /* UNIV_HOTBACKUP */ +} + +#ifndef UNIV_HOTBACKUP +/********************************************************************** +Refreshes the values used to calculate per-second averages. */ +static +void +srv_refresh_innodb_monitor_stats(void) +/*==================================*/ +{ + mutex_enter(&srv_innodb_monitor_mutex); + + srv_last_monitor_time = time(NULL); + + os_aio_refresh_stats(); + + btr_cur_n_sea_old = btr_cur_n_sea; + btr_cur_n_non_sea_old = btr_cur_n_non_sea; + + log_refresh_stats(); + + buf_refresh_io_stats(); + + srv_n_rows_inserted_old = srv_n_rows_inserted; + srv_n_rows_updated_old = srv_n_rows_updated; + srv_n_rows_deleted_old = srv_n_rows_deleted; + srv_n_rows_read_old = srv_n_rows_read; + + mutex_exit(&srv_innodb_monitor_mutex); +} + +/********************************************************************** +Outputs to a file the output of the InnoDB Monitor. */ +UNIV_INTERN +void +srv_printf_innodb_monitor( +/*======================*/ + FILE* file, /* in: output stream */ + ulint* trx_start, /* out: file position of the start of + the list of active transactions */ + ulint* trx_end) /* out: file position of the end of + the list of active transactions */ +{ + double time_elapsed; + time_t current_time; + ulint n_reserved; + + ulint btr_search_sys_subtotal; + ulint lock_sys_subtotal; + ulint recv_sys_subtotal; + ulint io_counter_subtotal; + + ulint i; + trx_t* trx; + + mutex_enter(&srv_innodb_monitor_mutex); + + current_time = time(NULL); + + /* We add 0.001 seconds to time_elapsed to prevent division + by zero if two users happen to call SHOW INNODB STATUS at the same + time */ + + time_elapsed = difftime(current_time, srv_last_monitor_time) + + 0.001; + + srv_last_monitor_time = time(NULL); + + fputs("\n=====================================\n", file); + + ut_print_timestamp(file); + fprintf(file, + " INNODB MONITOR OUTPUT\n" + "=====================================\n" + "Per second averages calculated from the last %lu seconds\n", + (ulong)time_elapsed); + + fputs("----------\n" + "SEMAPHORES\n" + "----------\n", file); + sync_print(file); + + /* Conceptually, srv_innodb_monitor_mutex has a very high latching + order level in sync0sync.h, while dict_foreign_err_mutex has a very + low level 135. Therefore we can reserve the latter mutex here without + a danger of a deadlock of threads. */ + + mutex_enter(&dict_foreign_err_mutex); + + if (ftell(dict_foreign_err_file) != 0L) { + fputs("------------------------\n" + "LATEST FOREIGN KEY ERROR\n" + "------------------------\n", file); + ut_copy_file(file, dict_foreign_err_file); + } + + mutex_exit(&dict_foreign_err_mutex); + + fputs("--------\n" + "FILE I/O\n" + "--------\n", file); + os_aio_print(file); + + fputs("-------------------------------------\n" + "INSERT BUFFER AND ADAPTIVE HASH INDEX\n" + "-------------------------------------\n", file); + ibuf_print(file); + + ha_print_info(file, btr_search_sys->hash_index); + + fprintf(file, + "%.2f hash searches/s, %.2f non-hash searches/s\n", + (btr_cur_n_sea - btr_cur_n_sea_old) + / time_elapsed, + (btr_cur_n_non_sea - btr_cur_n_non_sea_old) + / time_elapsed); + btr_cur_n_sea_old = btr_cur_n_sea; + btr_cur_n_non_sea_old = btr_cur_n_non_sea; + + fputs("---\n" + "LOG\n" + "---\n", file); + log_print(file); + + fputs("----------------------\n" + "BUFFER POOL AND MEMORY\n" + "----------------------\n", file); + fprintf(file, + "Total memory allocated " ULINTPF + "; in additional pool allocated " ULINTPF "\n", + ut_total_allocated_memory, + mem_pool_get_reserved(mem_comm_pool)); + /* Calcurate reserved memories */ + if (btr_search_sys && btr_search_sys->hash_index->heap) { + btr_search_sys_subtotal = mem_heap_get_size(btr_search_sys->hash_index->heap); + } else { + btr_search_sys_subtotal = 0; + for (i=0; i < btr_search_sys->hash_index->n_mutexes; i++) { + btr_search_sys_subtotal += mem_heap_get_size(btr_search_sys->hash_index->heaps[i]); + } + } + + lock_sys_subtotal = 0; + if (trx_sys) { + mutex_enter(&kernel_mutex); + trx = UT_LIST_GET_FIRST(trx_sys->mysql_trx_list); + while (trx) { + lock_sys_subtotal += ((trx->lock_heap) ? mem_heap_get_size(trx->lock_heap) : 0); + trx = UT_LIST_GET_NEXT(mysql_trx_list, trx); + } + mutex_exit(&kernel_mutex); + } + + recv_sys_subtotal = ((recv_sys && recv_sys->addr_hash) + ? mem_heap_get_size(recv_sys->heap) : 0); + + fprintf(file, + "Internal hash tables (constant factor + variable factor)\n" + " Adaptive hash index %lu \t(%lu + %lu)\n" + " Page hash %lu\n" + " Dictionary cache %lu \t(%lu + %lu)\n" + " File system %lu \t(%lu + %lu)\n" + " Lock system %lu \t(%lu + %lu)\n" + " Recovery system %lu \t(%lu + %lu)\n" + " Threads %lu \t(%lu + %lu)\n", + + (ulong) (btr_search_sys + ? (btr_search_sys->hash_index->n_cells * sizeof(hash_cell_t)) : 0) + + btr_search_sys_subtotal, + (ulong) (btr_search_sys + ? (btr_search_sys->hash_index->n_cells * sizeof(hash_cell_t)) : 0), + (ulong) btr_search_sys_subtotal, + + (ulong) (buf_pool->page_hash->n_cells * sizeof(hash_cell_t)), + + (ulong) (dict_sys ? ((dict_sys->table_hash->n_cells + + dict_sys->table_id_hash->n_cells + ) * sizeof(hash_cell_t) + + dict_sys->size) : 0), + (ulong) (dict_sys ? ((dict_sys->table_hash->n_cells + + dict_sys->table_id_hash->n_cells + ) * sizeof(hash_cell_t)) : 0), + (ulong) (dict_sys ? (dict_sys->size) : 0), + + (ulong) (fil_system_hash_cells() * sizeof(hash_cell_t) + + fil_system_hash_nodes()), + (ulong) (fil_system_hash_cells() * sizeof(hash_cell_t)), + (ulong) fil_system_hash_nodes(), + + (ulong) ((lock_sys ? (lock_sys->rec_hash->n_cells * sizeof(hash_cell_t)) : 0) + + lock_sys_subtotal), + (ulong) (lock_sys ? (lock_sys->rec_hash->n_cells * sizeof(hash_cell_t)) : 0), + (ulong) lock_sys_subtotal, + + (ulong) (((recv_sys && recv_sys->addr_hash) + ? (recv_sys->addr_hash->n_cells * sizeof(hash_cell_t)) : 0) + + recv_sys_subtotal), + (ulong) ((recv_sys && recv_sys->addr_hash) + ? (recv_sys->addr_hash->n_cells * sizeof(hash_cell_t)) : 0), + (ulong) recv_sys_subtotal, + + (ulong) (thr_local_hash_cells() * sizeof(hash_cell_t) + + thr_local_hash_nodes()), + (ulong) (thr_local_hash_cells() * sizeof(hash_cell_t)), + (ulong) thr_local_hash_nodes()); + + fprintf(file, "Dictionary memory allocated " ULINTPF "\n", + dict_sys->size); + + buf_print_io(file); + + fputs("--------------\n" + "ROW OPERATIONS\n" + "--------------\n", file); + fprintf(file, "%ld queries inside InnoDB, %lu queries in queue\n", + (long) srv_conc_n_threads, + (ulong) srv_conc_n_waiting_threads); + + fprintf(file, "%lu read views open inside InnoDB\n", + UT_LIST_GET_LEN(trx_sys->view_list)); + + n_reserved = fil_space_get_n_reserved_extents(0); + if (n_reserved > 0) { + fprintf(file, + "%lu tablespace extents now reserved for" + " B-tree split operations\n", + (ulong) n_reserved); + } + +#ifdef UNIV_LINUX + fprintf(file, "Main thread process no. %lu, id %lu, state: %s\n", + (ulong) srv_main_thread_process_no, + (ulong) srv_main_thread_id, + srv_main_thread_op_info); +#else + fprintf(file, "Main thread id %lu, state: %s\n", + (ulong) srv_main_thread_id, + srv_main_thread_op_info); +#endif + fprintf(file, + "Number of rows inserted " ULINTPF + ", updated " ULINTPF ", deleted " ULINTPF + ", read " ULINTPF "\n", + srv_n_rows_inserted, + srv_n_rows_updated, + srv_n_rows_deleted, + srv_n_rows_read); + fprintf(file, + "%.2f inserts/s, %.2f updates/s," + " %.2f deletes/s, %.2f reads/s\n", + (srv_n_rows_inserted - srv_n_rows_inserted_old) + / time_elapsed, + (srv_n_rows_updated - srv_n_rows_updated_old) + / time_elapsed, + (srv_n_rows_deleted - srv_n_rows_deleted_old) + / time_elapsed, + (srv_n_rows_read - srv_n_rows_read_old) + / time_elapsed); + + srv_n_rows_inserted_old = srv_n_rows_inserted; + srv_n_rows_updated_old = srv_n_rows_updated; + srv_n_rows_deleted_old = srv_n_rows_deleted; + srv_n_rows_read_old = srv_n_rows_read; + + lock_print_info_summary(file); + if (trx_start) { + long t = ftell(file); + if (t < 0) { + *trx_start = ULINT_UNDEFINED; + } else { + *trx_start = (ulint) t; + } + } + lock_print_info_all_transactions(file); + if (trx_end) { + long t = ftell(file); + if (t < 0) { + *trx_end = ULINT_UNDEFINED; + } else { + *trx_end = (ulint) t; + } + } + + fputs("----------------------------\n" + "END OF INNODB MONITOR OUTPUT\n" + "============================\n", file); + mutex_exit(&srv_innodb_monitor_mutex); + fflush(file); +} + +/********************************************************************** +Function to pass InnoDB status variables to MySQL */ +UNIV_INTERN +void +srv_export_innodb_status(void) +{ + mutex_enter(&srv_innodb_monitor_mutex); + + export_vars.innodb_data_pending_reads + = os_n_pending_reads; + export_vars.innodb_data_pending_writes + = os_n_pending_writes; + export_vars.innodb_data_pending_fsyncs + = fil_n_pending_log_flushes + + fil_n_pending_tablespace_flushes; + export_vars.innodb_data_fsyncs = os_n_fsyncs; + export_vars.innodb_data_read = srv_data_read; + export_vars.innodb_data_reads = os_n_file_reads; + export_vars.innodb_data_writes = os_n_file_writes; + export_vars.innodb_data_written = srv_data_written; + export_vars.innodb_buffer_pool_read_requests = buf_pool->n_page_gets; + export_vars.innodb_buffer_pool_write_requests + = srv_buf_pool_write_requests; + export_vars.innodb_buffer_pool_wait_free = srv_buf_pool_wait_free; + export_vars.innodb_buffer_pool_pages_flushed = srv_buf_pool_flushed; + export_vars.innodb_buffer_pool_reads = srv_buf_pool_reads; + export_vars.innodb_buffer_pool_read_ahead_rnd = srv_read_ahead_rnd; + export_vars.innodb_buffer_pool_read_ahead_seq = srv_read_ahead_seq; + export_vars.innodb_buffer_pool_pages_data + = UT_LIST_GET_LEN(buf_pool->LRU); + export_vars.innodb_buffer_pool_pages_dirty + = UT_LIST_GET_LEN(buf_pool->flush_list); + export_vars.innodb_buffer_pool_pages_free + = UT_LIST_GET_LEN(buf_pool->free); +#ifdef UNIV_DEBUG + export_vars.innodb_buffer_pool_pages_latched + = buf_get_latched_pages_number(); +#endif /* UNIV_DEBUG */ + export_vars.innodb_buffer_pool_pages_total = buf_pool->curr_size; + + export_vars.innodb_buffer_pool_pages_misc = buf_pool->curr_size + - UT_LIST_GET_LEN(buf_pool->LRU) + - UT_LIST_GET_LEN(buf_pool->free); +#ifdef HAVE_GCC_ATOMIC_BUILTINS + export_vars.innodb_have_atomic_builtins = 1; +#else + export_vars.innodb_have_atomic_builtins = 0; +#endif + export_vars.innodb_page_size = UNIV_PAGE_SIZE; + export_vars.innodb_log_waits = srv_log_waits; + export_vars.innodb_os_log_written = srv_os_log_written; + export_vars.innodb_os_log_fsyncs = fil_n_log_flushes; + export_vars.innodb_os_log_pending_fsyncs = fil_n_pending_log_flushes; + export_vars.innodb_os_log_pending_writes = srv_os_log_pending_writes; + export_vars.innodb_log_write_requests = srv_log_write_requests; + export_vars.innodb_log_writes = srv_log_writes; + export_vars.innodb_dblwr_pages_written = srv_dblwr_pages_written; + export_vars.innodb_dblwr_writes = srv_dblwr_writes; + export_vars.innodb_pages_created = buf_pool->n_pages_created; + export_vars.innodb_pages_read = buf_pool->n_pages_read; + export_vars.innodb_pages_written = buf_pool->n_pages_written; + export_vars.innodb_row_lock_waits = srv_n_lock_wait_count; + export_vars.innodb_row_lock_current_waits + = srv_n_lock_wait_current_count; + export_vars.innodb_row_lock_time = srv_n_lock_wait_time / 1000; + if (srv_n_lock_wait_count > 0) { + export_vars.innodb_row_lock_time_avg = (ulint) + (srv_n_lock_wait_time / 1000 / srv_n_lock_wait_count); + } else { + export_vars.innodb_row_lock_time_avg = 0; + } + export_vars.innodb_row_lock_time_max + = srv_n_lock_max_wait_time / 1000; + export_vars.innodb_rows_read = srv_n_rows_read; + export_vars.innodb_rows_inserted = srv_n_rows_inserted; + export_vars.innodb_rows_updated = srv_n_rows_updated; + export_vars.innodb_rows_deleted = srv_n_rows_deleted; + + mutex_exit(&srv_innodb_monitor_mutex); +} + +/************************************************************************* +A thread which wakes up threads whose lock wait may have lasted too long. +This also prints the info output by various InnoDB monitors. */ +UNIV_INTERN +os_thread_ret_t +srv_lock_timeout_and_monitor_thread( +/*================================*/ + /* out: a dummy parameter */ + void* arg __attribute__((unused))) + /* in: a dummy parameter required by + os_thread_create */ +{ + srv_slot_t* slot; + double time_elapsed; + time_t current_time; + time_t last_table_monitor_time; + time_t last_tablespace_monitor_time; + time_t last_monitor_time; + ibool some_waits; + double wait_time; + ulint i; + +#ifdef UNIV_DEBUG_THREAD_CREATION + fprintf(stderr, "Lock timeout thread starts, id %lu\n", + os_thread_pf(os_thread_get_curr_id())); +#endif + UT_NOT_USED(arg); + srv_last_monitor_time = time(NULL); + last_table_monitor_time = time(NULL); + last_tablespace_monitor_time = time(NULL); + last_monitor_time = time(NULL); +loop: + srv_lock_timeout_and_monitor_active = TRUE; + + /* When someone is waiting for a lock, we wake up every second + and check if a timeout has passed for a lock wait */ + + os_thread_sleep(1000000); + + current_time = time(NULL); + + time_elapsed = difftime(current_time, last_monitor_time); + + if (time_elapsed > 15) { + last_monitor_time = time(NULL); + + if (srv_print_innodb_monitor) { + srv_printf_innodb_monitor(stderr, NULL, NULL); + } + + if (srv_innodb_status) { + mutex_enter(&srv_monitor_file_mutex); + rewind(srv_monitor_file); + srv_printf_innodb_monitor(srv_monitor_file, NULL, + NULL); + os_file_set_eof(srv_monitor_file); + mutex_exit(&srv_monitor_file_mutex); + } + + if (srv_print_innodb_tablespace_monitor + && difftime(current_time, + last_tablespace_monitor_time) > 60) { + last_tablespace_monitor_time = time(NULL); + + fputs("========================" + "========================\n", + stderr); + + ut_print_timestamp(stderr); + + fputs(" INNODB TABLESPACE MONITOR OUTPUT\n" + "========================" + "========================\n", + stderr); + + fsp_print(0); + fputs("Validating tablespace\n", stderr); + fsp_validate(0); + fputs("Validation ok\n" + "---------------------------------------\n" + "END OF INNODB TABLESPACE MONITOR OUTPUT\n" + "=======================================\n", + stderr); + } + + if (srv_print_innodb_table_monitor + && difftime(current_time, last_table_monitor_time) > 60) { + + last_table_monitor_time = time(NULL); + + fputs("===========================================\n", + stderr); + + ut_print_timestamp(stderr); + + fputs(" INNODB TABLE MONITOR OUTPUT\n" + "===========================================\n", + stderr); + dict_print(); + + fputs("-----------------------------------\n" + "END OF INNODB TABLE MONITOR OUTPUT\n" + "==================================\n", + stderr); + } + } + + mutex_enter(&kernel_mutex); + + some_waits = FALSE; + + /* Check of all slots if a thread is waiting there, and if it + has exceeded the time limit */ + + for (i = 0; i < OS_THREAD_MAX_N; i++) { + + slot = srv_mysql_table + i; + + if (slot->in_use) { + trx_t* trx; + ulong lock_wait_timeout; + + some_waits = TRUE; + + wait_time = ut_difftime(ut_time(), slot->suspend_time); + + trx = thr_get_trx(slot->thr); + lock_wait_timeout = thd_lock_wait_timeout( + trx->mysql_thd); + + if (lock_wait_timeout < 100000000 + && (wait_time > (double) lock_wait_timeout + || wait_time < 0)) { + + /* Timeout exceeded or a wrap-around in system + time counter: cancel the lock request queued + by the transaction and release possible + other transactions waiting behind; it is + possible that the lock has already been + granted: in that case do nothing */ + + if (trx->wait_lock) { + lock_cancel_waiting_and_release( + trx->wait_lock); + } + } + } + } + + os_event_reset(srv_lock_timeout_thread_event); + + mutex_exit(&kernel_mutex); + + if (srv_shutdown_state >= SRV_SHUTDOWN_CLEANUP) { + goto exit_func; + } + + if (some_waits || srv_print_innodb_monitor + || srv_print_innodb_lock_monitor + || srv_print_innodb_tablespace_monitor + || srv_print_innodb_table_monitor) { + goto loop; + } + + /* No one was waiting for a lock and no monitor was active: + suspend this thread */ + + srv_lock_timeout_and_monitor_active = FALSE; + +#if 0 + /* The following synchronisation is disabled, since + the InnoDB monitor output is to be updated every 15 seconds. */ + os_event_wait(srv_lock_timeout_thread_event); +#endif + goto loop; + +exit_func: + srv_lock_timeout_and_monitor_active = FALSE; + + /* We count the number of threads in os_thread_exit(). A created + thread should always use that to exit and not use return() to exit. */ + + os_thread_exit(NULL); + + OS_THREAD_DUMMY_RETURN; +} + +/************************************************************************* +A thread which prints warnings about semaphore waits which have lasted +too long. These can be used to track bugs which cause hangs. */ +UNIV_INTERN +os_thread_ret_t +srv_error_monitor_thread( +/*=====================*/ + /* out: a dummy parameter */ + void* arg __attribute__((unused))) + /* in: a dummy parameter required by + os_thread_create */ +{ + /* number of successive fatal timeouts observed */ + ulint fatal_cnt = 0; + ib_uint64_t old_lsn; + ib_uint64_t new_lsn; + + old_lsn = srv_start_lsn; + +#ifdef UNIV_DEBUG_THREAD_CREATION + fprintf(stderr, "Error monitor thread starts, id %lu\n", + os_thread_pf(os_thread_get_curr_id())); +#endif +loop: + srv_error_monitor_active = TRUE; + + /* Try to track a strange bug reported by Harald Fuchs and others, + where the lsn seems to decrease at times */ + + new_lsn = log_get_lsn(); + + if (new_lsn < old_lsn) { + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: Error: old log sequence number %llu" + " was greater\n" + "InnoDB: than the new log sequence number %llu!\n" + "InnoDB: Please submit a bug report" + " to http://bugs.mysql.com\n", + old_lsn, new_lsn); + } + + old_lsn = new_lsn; + + if (difftime(time(NULL), srv_last_monitor_time) > 60) { + /* We referesh InnoDB Monitor values so that averages are + printed from at most 60 last seconds */ + + srv_refresh_innodb_monitor_stats(); + } + + /* Update the statistics collected for deciding LRU + eviction policy. */ + buf_LRU_stat_update(); + + /* In case mutex_exit is not a memory barrier, it is + theoretically possible some threads are left waiting though + the semaphore is already released. Wake up those threads: */ + + sync_arr_wake_threads_if_sema_free(); + + if (sync_array_print_long_waits()) { + fatal_cnt++; + if (fatal_cnt > 10) { + + fprintf(stderr, + "InnoDB: Error: semaphore wait has lasted" + " > %lu seconds\n" + "InnoDB: We intentionally crash the server," + " because it appears to be hung.\n", + (ulong) srv_fatal_semaphore_wait_threshold); + + ut_error; + } + } else { + fatal_cnt = 0; + } + + /* Flush stderr so that a database user gets the output + to possible MySQL error file */ + + fflush(stderr); + + os_thread_sleep(1000000); + + if (srv_shutdown_state < SRV_SHUTDOWN_CLEANUP) { + + goto loop; + } + + srv_error_monitor_active = FALSE; + + /* We count the number of threads in os_thread_exit(). A created + thread should always use that to exit and not use return() to exit. */ + + os_thread_exit(NULL); + + OS_THREAD_DUMMY_RETURN; +} + +/*********************************************************************** +Tells the InnoDB server that there has been activity in the database +and wakes up the master thread if it is suspended (not sleeping). Used +in the MySQL interface. Note that there is a small chance that the master +thread stays suspended (we do not protect our operation with the kernel +mutex, for performace reasons). */ +UNIV_INTERN +void +srv_active_wake_master_thread(void) +/*===============================*/ +{ + srv_activity_count++; + + if (srv_n_threads_active[SRV_MASTER] == 0) { + + mutex_enter(&kernel_mutex); + + srv_release_threads(SRV_MASTER, 1); + + mutex_exit(&kernel_mutex); + } +} + +/*********************************************************************** +Wakes up the master thread if it is suspended or being suspended. */ +UNIV_INTERN +void +srv_wake_master_thread(void) +/*========================*/ +{ + srv_activity_count++; + + mutex_enter(&kernel_mutex); + + srv_release_threads(SRV_MASTER, 1); + + mutex_exit(&kernel_mutex); +} + +/************************************************************************* +The master thread controlling the server. */ +UNIV_INTERN +os_thread_ret_t +srv_master_thread( +/*==============*/ + /* out: a dummy parameter */ + void* arg __attribute__((unused))) + /* in: a dummy parameter required by + os_thread_create */ +{ + os_event_t event; + time_t last_flush_time; + time_t current_time; + ulint old_activity_count; + ulint n_pages_purged = 0; + ulint n_bytes_merged; + ulint n_pages_flushed; + ulint n_bytes_archived; + ulint n_tables_to_drop; + ulint n_ios; + ulint n_ios_old; + ulint n_ios_very_old; + ulint n_pend_ios; + ibool skip_sleep = FALSE; + ulint i; + + ib_uint64_t oldest_lsn; + +#ifdef UNIV_DEBUG_THREAD_CREATION + fprintf(stderr, "Master thread starts, id %lu\n", + os_thread_pf(os_thread_get_curr_id())); +#endif + srv_main_thread_process_no = os_proc_get_number(); + srv_main_thread_id = os_thread_pf(os_thread_get_curr_id()); + + srv_table_reserve_slot(SRV_MASTER); + + mutex_enter(&kernel_mutex); + + srv_n_threads_active[SRV_MASTER]++; + + mutex_exit(&kernel_mutex); + +loop: + /*****************************************************************/ + /* ---- When there is database activity by users, we cycle in this + loop */ + + srv_main_thread_op_info = "reserving kernel mutex"; + + n_ios_very_old = log_sys->n_log_ios + buf_pool->n_pages_read + + buf_pool->n_pages_written; + mutex_enter(&kernel_mutex); + + /* Store the user activity counter at the start of this loop */ + old_activity_count = srv_activity_count; + + mutex_exit(&kernel_mutex); + + if (srv_force_recovery >= SRV_FORCE_NO_BACKGROUND) { + + goto suspend_thread; + } + + /* ---- We run the following loop approximately once per second + when there is database activity */ + + skip_sleep = FALSE; + + for (i = 0; i < 10; i++) { + n_ios_old = log_sys->n_log_ios + buf_pool->n_pages_read + + buf_pool->n_pages_written; + srv_main_thread_op_info = "sleeping"; + + if (!skip_sleep) { + + os_thread_sleep(1000000); + } + + skip_sleep = FALSE; + + /* ALTER TABLE in MySQL requires on Unix that the table handler + can drop tables lazily after there no longer are SELECT + queries to them. */ + + srv_main_thread_op_info = "doing background drop tables"; + + row_drop_tables_for_mysql_in_background(); + + srv_main_thread_op_info = ""; + + if (srv_fast_shutdown && srv_shutdown_state > 0) { + + goto background_loop; + } + + /* We flush the log once in a second even if no commit + is issued or the we have specified in my.cnf no flush + at transaction commit */ + + srv_main_thread_op_info = "flushing log"; + log_buffer_flush_to_disk(); + + srv_main_thread_op_info = "making checkpoint"; + log_free_check(); + + /* If there were less than 5 i/os during the + one second sleep, we assume that there is free + disk i/o capacity available, and it makes sense to + do an insert buffer merge. */ + + n_pend_ios = buf_get_n_pending_ios() + + log_sys->n_pending_writes; + n_ios = log_sys->n_log_ios + buf_pool->n_pages_read + + buf_pool->n_pages_written; + if (n_pend_ios < 3 && (n_ios - n_ios_old < PCT_IO(5))) { + srv_main_thread_op_info = "doing insert buffer merge"; + ibuf_contract_for_n_pages( + TRUE, PCT_IBUF_IO((srv_insert_buffer_batch_size / 4))); + + srv_main_thread_op_info = "flushing log"; + + log_buffer_flush_to_disk(); + } + + if (UNIV_UNLIKELY(buf_get_modified_ratio_pct() + > srv_max_buf_pool_modified_pct)) { + + /* Try to keep the number of modified pages in the + buffer pool under the limit wished by the user */ + + n_pages_flushed = buf_flush_batch(BUF_FLUSH_LIST, PCT_IO(100), + IB_ULONGLONG_MAX); + + /* If we had to do the flush, it may have taken + even more than 1 second, and also, there may be more + to flush. Do not sleep 1 second during the next + iteration of this loop. */ + + skip_sleep = TRUE; + } else if (srv_adaptive_checkpoint) { + + /* Try to keep modified age not to exceed + max_checkpoint_age * 7/8 line */ + + mutex_enter(&(log_sys->mutex)); + + oldest_lsn = buf_pool_get_oldest_modification(); + if (oldest_lsn == 0) { + + mutex_exit(&(log_sys->mutex)); + + } else { + if ((log_sys->lsn - oldest_lsn) + > (log_sys->max_checkpoint_age) - ((log_sys->max_checkpoint_age) / 8)) { + /* LOG_POOL_PREFLUSH_RATIO_ASYNC is exceeded. */ + /* We should not flush from here. */ + mutex_exit(&(log_sys->mutex)); + } else if ((log_sys->lsn - oldest_lsn) + > (log_sys->max_checkpoint_age) - ((log_sys->max_checkpoint_age) / 4)) { + + /* 2nd defence line (max_checkpoint_age * 3/4) */ + + mutex_exit(&(log_sys->mutex)); + + n_pages_flushed = buf_flush_batch(BUF_FLUSH_LIST, PCT_IO(100), + IB_ULONGLONG_MAX); + skip_sleep = TRUE; + } else if ((log_sys->lsn - oldest_lsn) + > (log_sys->max_checkpoint_age)/2 ) { + + /* 1st defence line (max_checkpoint_age * 1/2) */ + + mutex_exit(&(log_sys->mutex)); + + n_pages_flushed = buf_flush_batch(BUF_FLUSH_LIST, PCT_IO(10), + IB_ULONGLONG_MAX); + skip_sleep = TRUE; + } else { + mutex_exit(&(log_sys->mutex)); + } + } + + } + + if (srv_activity_count == old_activity_count) { + + /* There is no user activity at the moment, go to + the background loop */ + + goto background_loop; + } + } + + /* ---- We perform the following code approximately once per + 10 seconds when there is database activity */ + +#ifdef MEM_PERIODIC_CHECK + /* Check magic numbers of every allocated mem block once in 10 + seconds */ + mem_validate_all_blocks(); +#endif + /* If there were less than 200 i/os during the 10 second period, + we assume that there is free disk i/o capacity available, and it + makes sense to flush 100 pages. */ + + n_pend_ios = buf_get_n_pending_ios() + log_sys->n_pending_writes; + n_ios = log_sys->n_log_ios + buf_pool->n_pages_read + + buf_pool->n_pages_written; + if (n_pend_ios < 3 && (n_ios - n_ios_very_old < PCT_IO(200))) { + + srv_main_thread_op_info = "flushing buffer pool pages"; + buf_flush_batch(BUF_FLUSH_LIST, PCT_IO(100), IB_ULONGLONG_MAX); + + srv_main_thread_op_info = "flushing log"; + log_buffer_flush_to_disk(); + } + + /* We run a batch of insert buffer merge every 10 seconds, + even if the server were active */ + + srv_main_thread_op_info = "doing insert buffer merge"; + ibuf_contract_for_n_pages(TRUE, PCT_IBUF_IO((srv_insert_buffer_batch_size / 4))); + + srv_main_thread_op_info = "flushing log"; + log_buffer_flush_to_disk(); + + /* We run a full purge every 10 seconds, even if the server + were active */ + + last_flush_time = time(NULL); + + do { + + if (srv_fast_shutdown && srv_shutdown_state > 0) { + + goto background_loop; + } + + srv_main_thread_op_info = "purging"; + n_pages_purged = trx_purge(); + + current_time = time(NULL); + + if (difftime(current_time, last_flush_time) > 1) { + srv_main_thread_op_info = "flushing log"; + + log_buffer_flush_to_disk(); + last_flush_time = current_time; + } + } while (n_pages_purged); + + srv_main_thread_op_info = "flushing buffer pool pages"; + + /* Flush a few oldest pages to make a new checkpoint younger */ + + if (buf_get_modified_ratio_pct() > 70) { + + /* If there are lots of modified pages in the buffer pool + (> 70 %), we assume we can afford reserving the disk(s) for + the time it requires to flush 100 pages */ + + n_pages_flushed = buf_flush_batch(BUF_FLUSH_LIST, PCT_IO(100), + IB_ULONGLONG_MAX); + } else { + /* Otherwise, we only flush a small number of pages so that + we do not unnecessarily use much disk i/o capacity from + other work */ + + n_pages_flushed = buf_flush_batch(BUF_FLUSH_LIST, PCT_IO(10), + IB_ULONGLONG_MAX); + } + + srv_main_thread_op_info = "making checkpoint"; + + /* Make a new checkpoint about once in 10 seconds */ + + log_checkpoint(TRUE, FALSE); + + srv_main_thread_op_info = "reserving kernel mutex"; + + mutex_enter(&kernel_mutex); + + /* ---- When there is database activity, we jump from here back to + the start of loop */ + + if (srv_activity_count != old_activity_count) { + mutex_exit(&kernel_mutex); + goto loop; + } + + mutex_exit(&kernel_mutex); + + /* If the database is quiet, we enter the background loop */ + + /*****************************************************************/ +background_loop: + /* ---- In this loop we run background operations when the server + is quiet from user activity. Also in the case of a shutdown, we + loop here, flushing the buffer pool to the data files. */ + + /* The server has been quiet for a while: start running background + operations */ + + srv_main_thread_op_info = "doing background drop tables"; + + n_tables_to_drop = row_drop_tables_for_mysql_in_background(); + + if (n_tables_to_drop > 0) { + /* Do not monopolize the CPU even if there are tables waiting + in the background drop queue. (It is essentially a bug if + MySQL tries to drop a table while there are still open handles + to it and we had to put it to the background drop queue.) */ + + os_thread_sleep(100000); + } + + srv_main_thread_op_info = "purging"; + + /* Run a full purge */ + + last_flush_time = time(NULL); + + do { + if (srv_fast_shutdown && srv_shutdown_state > 0) { + + break; + } + + srv_main_thread_op_info = "purging"; + n_pages_purged = trx_purge(); + + current_time = time(NULL); + + if (difftime(current_time, last_flush_time) > 1) { + srv_main_thread_op_info = "flushing log"; + + log_buffer_flush_to_disk(); + last_flush_time = current_time; + } + } while (n_pages_purged); + + srv_main_thread_op_info = "reserving kernel mutex"; + + mutex_enter(&kernel_mutex); + if (srv_activity_count != old_activity_count) { + mutex_exit(&kernel_mutex); + goto loop; + } + mutex_exit(&kernel_mutex); + + srv_main_thread_op_info = "doing insert buffer merge"; + + if (srv_fast_shutdown && srv_shutdown_state > 0) { + n_bytes_merged = 0; + } else { + n_bytes_merged = ibuf_contract_for_n_pages( + TRUE, PCT_IBUF_IO((srv_insert_buffer_batch_size * 5))); + } + + srv_main_thread_op_info = "reserving kernel mutex"; + + mutex_enter(&kernel_mutex); + if (srv_activity_count != old_activity_count) { + mutex_exit(&kernel_mutex); + goto loop; + } + mutex_exit(&kernel_mutex); + +flush_loop: + srv_main_thread_op_info = "flushing buffer pool pages"; + + if (srv_fast_shutdown < 2) { + n_pages_flushed = buf_flush_batch(BUF_FLUSH_LIST, PCT_IO(100), + IB_ULONGLONG_MAX); + } else { + /* In the fastest shutdown we do not flush the buffer pool + to data files: we set n_pages_flushed to 0 artificially. */ + + n_pages_flushed = 0; + } + + srv_main_thread_op_info = "reserving kernel mutex"; + + mutex_enter(&kernel_mutex); + if (srv_activity_count != old_activity_count) { + mutex_exit(&kernel_mutex); + goto loop; + } + mutex_exit(&kernel_mutex); + + srv_main_thread_op_info = "waiting for buffer pool flush to end"; + buf_flush_wait_batch_end(BUF_FLUSH_LIST); + + srv_main_thread_op_info = "flushing log"; + + log_buffer_flush_to_disk(); + + srv_main_thread_op_info = "making checkpoint"; + + log_checkpoint(TRUE, FALSE); + + if (buf_get_modified_ratio_pct() > srv_max_buf_pool_modified_pct) { + + /* Try to keep the number of modified pages in the + buffer pool under the limit wished by the user */ + + goto flush_loop; + } + + srv_main_thread_op_info = "reserving kernel mutex"; + + mutex_enter(&kernel_mutex); + if (srv_activity_count != old_activity_count) { + mutex_exit(&kernel_mutex); + goto loop; + } + mutex_exit(&kernel_mutex); + /* + srv_main_thread_op_info = "archiving log (if log archive is on)"; + + log_archive_do(FALSE, &n_bytes_archived); + */ + n_bytes_archived = 0; + + /* Keep looping in the background loop if still work to do */ + + if (srv_fast_shutdown && srv_shutdown_state > 0) { + if (n_tables_to_drop + n_pages_flushed + + n_bytes_archived != 0) { + + /* If we are doing a fast shutdown (= the default) + we do not do purge or insert buffer merge. But we + flush the buffer pool completely to disk. + In a 'very fast' shutdown we do not flush the buffer + pool to data files: we have set n_pages_flushed to + 0 artificially. */ + + goto background_loop; + } + } else if (n_tables_to_drop + + n_pages_purged + n_bytes_merged + n_pages_flushed + + n_bytes_archived != 0) { + /* In a 'slow' shutdown we run purge and the insert buffer + merge to completion */ + + goto background_loop; + } + + /* There is no work for background operations either: suspend + master thread to wait for more server activity */ + +suspend_thread: + srv_main_thread_op_info = "suspending"; + + mutex_enter(&kernel_mutex); + + if (row_get_background_drop_list_len_low() > 0) { + mutex_exit(&kernel_mutex); + + goto loop; + } + + event = srv_suspend_thread(); + + mutex_exit(&kernel_mutex); + + /* DO NOT CHANGE THIS STRING. innobase_start_or_create_for_mysql() + waits for database activity to die down when converting < 4.1.x + databases, and relies on this string being exactly as it is. InnoDB + manual also mentions this string in several places. */ + srv_main_thread_op_info = "waiting for server activity"; + + os_event_wait(event); + + if (srv_shutdown_state == SRV_SHUTDOWN_EXIT_THREADS) { + /* This is only extra safety, the thread should exit + already when the event wait ends */ + + os_thread_exit(NULL); + } + + /* When there is user activity, InnoDB will set the event and the + main thread goes back to loop. */ + + goto loop; + + OS_THREAD_DUMMY_RETURN; /* Not reached, avoid compiler warning */ +} +#endif /* !UNIV_HOTBACKUP */ === added file 'storage/xtradb/srv/srv0start.c' --- a/storage/xtradb/srv/srv0start.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/srv/srv0start.c 2009-06-09 15:08:46 +0000 @@ -0,0 +1,2052 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. +Copyright (c) 2008, Google Inc. + +Portions of this file contain modifications contributed and copyrighted by +Google, Inc. Those modifications are gratefully acknowledged and are described +briefly in the InnoDB documentation. The contributions by Google are +incorporated with their permission, and subject to the conditions contained in +the file COPYING.Google. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/************************************************************************ +Starts the InnoDB database server + +Created 2/16/1996 Heikki Tuuri +*************************************************************************/ + +#include "os0proc.h" +#include "sync0sync.h" +#include "ut0mem.h" +#include "mem0mem.h" +#include "data0data.h" +#include "data0type.h" +#include "dict0dict.h" +#include "buf0buf.h" +#include "buf0flu.h" +#include "buf0rea.h" +#include "os0file.h" +#include "os0thread.h" +#include "fil0fil.h" +#include "fsp0fsp.h" +#include "rem0rec.h" +#include "rem0cmp.h" +#include "mtr0mtr.h" +#include "log0log.h" +#include "log0recv.h" +#include "page0page.h" +#include "page0cur.h" +#include "trx0trx.h" +#include "dict0boot.h" +#include "dict0load.h" +#include "trx0sys.h" +#include "dict0crea.h" +#include "btr0btr.h" +#include "btr0pcur.h" +#include "btr0cur.h" +#include "btr0sea.h" +#include "rem0rec.h" +#include "srv0srv.h" +#include "que0que.h" +#include "usr0sess.h" +#include "lock0lock.h" +#include "trx0roll.h" +#include "trx0purge.h" +#include "row0ins.h" +#include "row0sel.h" +#include "row0upd.h" +#include "row0row.h" +#include "row0mysql.h" +#include "lock0lock.h" +#include "ibuf0ibuf.h" +#include "pars0pars.h" +#include "btr0sea.h" +#include "srv0start.h" +#include "que0que.h" + +/* Log sequence number immediately after startup */ +UNIV_INTERN ib_uint64_t srv_start_lsn; +/* Log sequence number at shutdown */ +UNIV_INTERN ib_uint64_t srv_shutdown_lsn; + +#ifdef HAVE_DARWIN_THREADS +# include <sys/utsname.h> +UNIV_INTERN ibool srv_have_fullfsync = FALSE; +#endif + +UNIV_INTERN ibool srv_start_raw_disk_in_use = FALSE; + +UNIV_INTERN ibool srv_startup_is_before_trx_rollback_phase = FALSE; +UNIV_INTERN ibool srv_is_being_started = FALSE; +UNIV_INTERN ibool srv_was_started = FALSE; +#ifndef UNIV_HOTBACKUP +static ibool srv_start_has_been_called = FALSE; +#endif /* !UNIV_HOTBACKUP */ + +/* At a shutdown the value first climbs to SRV_SHUTDOWN_CLEANUP +and then to SRV_SHUTDOWN_LAST_PHASE */ +UNIV_INTERN ulint srv_shutdown_state = 0; + +#ifndef UNIV_HOTBACKUP +static os_file_t files[1000]; + +static mutex_t ios_mutex; +static ulint ios; + +static ulint n[SRV_MAX_N_IO_THREADS + 5]; +static os_thread_id_t thread_ids[SRV_MAX_N_IO_THREADS + 5]; + +/* We use this mutex to test the return value of pthread_mutex_trylock + on successful locking. HP-UX does NOT return 0, though Linux et al do. */ +static os_fast_mutex_t srv_os_test_mutex; + +/* Name of srv_monitor_file */ +static char* srv_monitor_file_name; +#endif /* !UNIV_HOTBACKUP */ + +#define SRV_N_PENDING_IOS_PER_THREAD OS_AIO_N_PENDING_IOS_PER_THREAD +#define SRV_MAX_N_PENDING_SYNC_IOS 100 + + +/* Avoid warnings when using purify */ + +#ifdef HAVE_valgrind +static int inno_bcmp(register const char *s1, register const char *s2, + register uint len) +{ + while ((len-- != 0) && (*s1++ == *s2++)) + ; + + return(len + 1); +} +#define memcmp(A,B,C) inno_bcmp((A),(B),(C)) +#endif + +static +char* +srv_parse_megabytes( +/*================*/ + /* out: next character in string */ + char* str, /* in: string containing a quantity in bytes */ + ulint* megs) /* out: the number in megabytes */ +{ + char* endp; + ulint size; + + size = strtoul(str, &endp, 10); + + str = endp; + + switch (*str) { + case 'G': case 'g': + size *= 1024; + /* fall through */ + case 'M': case 'm': + str++; + break; + default: + size /= 1024 * 1024; + break; + } + + *megs = size; + return(str); +} + +/************************************************************************* +Reads the data files and their sizes from a character string given in +the .cnf file. */ +UNIV_INTERN +ibool +srv_parse_data_file_paths_and_sizes( +/*================================*/ + /* out: TRUE if ok, FALSE on parse error */ + char* str) /* in/out: the data file path string */ +{ + char* input_str; + char* path; + ulint size; + ulint i = 0; + + srv_auto_extend_last_data_file = FALSE; + srv_last_file_size_max = 0; + srv_data_file_names = NULL; + srv_data_file_sizes = NULL; + srv_data_file_is_raw_partition = NULL; + + input_str = str; + + /* First calculate the number of data files and check syntax: + path:size[M | G];path:size[M | G]... . Note that a Windows path may + contain a drive name and a ':'. */ + + while (*str != '\0') { + path = str; + + while ((*str != ':' && *str != '\0') + || (*str == ':' + && (*(str + 1) == '\\' || *(str + 1) == '/' + || *(str + 1) == ':'))) { + str++; + } + + if (*str == '\0') { + return(FALSE); + } + + str++; + + str = srv_parse_megabytes(str, &size); + + if (0 == strncmp(str, ":autoextend", + (sizeof ":autoextend") - 1)) { + + str += (sizeof ":autoextend") - 1; + + if (0 == strncmp(str, ":max:", + (sizeof ":max:") - 1)) { + + str += (sizeof ":max:") - 1; + + str = srv_parse_megabytes(str, &size); + } + + if (*str != '\0') { + + return(FALSE); + } + } + + if (strlen(str) >= 6 + && *str == 'n' + && *(str + 1) == 'e' + && *(str + 2) == 'w') { + str += 3; + } + + if (*str == 'r' && *(str + 1) == 'a' && *(str + 2) == 'w') { + str += 3; + } + + if (size == 0) { + return(FALSE); + } + + i++; + + if (*str == ';') { + str++; + } else if (*str != '\0') { + + return(FALSE); + } + } + + if (i == 0) { + /* If innodb_data_file_path was defined it must contain + at least one data file definition */ + + return(FALSE); + } + + srv_data_file_names = malloc(i * sizeof *srv_data_file_names); + srv_data_file_sizes = malloc(i * sizeof *srv_data_file_sizes); + srv_data_file_is_raw_partition = malloc( + i * sizeof *srv_data_file_is_raw_partition); + + srv_n_data_files = i; + + /* Then store the actual values to our arrays */ + + str = input_str; + i = 0; + + while (*str != '\0') { + path = str; + + /* Note that we must step over the ':' in a Windows path; + a Windows path normally looks like C:\ibdata\ibdata1:1G, but + a Windows raw partition may have a specification like + \\.\C::1Gnewraw or \\.\PHYSICALDRIVE2:1Gnewraw */ + + while ((*str != ':' && *str != '\0') + || (*str == ':' + && (*(str + 1) == '\\' || *(str + 1) == '/' + || *(str + 1) == ':'))) { + str++; + } + + if (*str == ':') { + /* Make path a null-terminated string */ + *str = '\0'; + str++; + } + + str = srv_parse_megabytes(str, &size); + + srv_data_file_names[i] = path; + srv_data_file_sizes[i] = size; + + if (0 == strncmp(str, ":autoextend", + (sizeof ":autoextend") - 1)) { + + srv_auto_extend_last_data_file = TRUE; + + str += (sizeof ":autoextend") - 1; + + if (0 == strncmp(str, ":max:", + (sizeof ":max:") - 1)) { + + str += (sizeof ":max:") - 1; + + str = srv_parse_megabytes( + str, &srv_last_file_size_max); + } + + if (*str != '\0') { + + return(FALSE); + } + } + + (srv_data_file_is_raw_partition)[i] = 0; + + if (strlen(str) >= 6 + && *str == 'n' + && *(str + 1) == 'e' + && *(str + 2) == 'w') { + str += 3; + (srv_data_file_is_raw_partition)[i] = SRV_NEW_RAW; + } + + if (*str == 'r' && *(str + 1) == 'a' && *(str + 2) == 'w') { + str += 3; + + if ((srv_data_file_is_raw_partition)[i] == 0) { + (srv_data_file_is_raw_partition)[i] = SRV_OLD_RAW; + } + } + + i++; + + if (*str == ';') { + str++; + } + } + + return(TRUE); +} + +/************************************************************************* +Reads log group home directories from a character string given in +the .cnf file. */ +UNIV_INTERN +ibool +srv_parse_log_group_home_dirs( +/*==========================*/ + /* out: TRUE if ok, FALSE on parse error */ + char* str) /* in/out: character string */ +{ + char* input_str; + char* path; + ulint i = 0; + + srv_log_group_home_dirs = NULL; + + input_str = str; + + /* First calculate the number of directories and check syntax: + path;path;... */ + + while (*str != '\0') { + path = str; + + while (*str != ';' && *str != '\0') { + str++; + } + + i++; + + if (*str == ';') { + str++; + } else if (*str != '\0') { + + return(FALSE); + } + } + + if (i != 1) { + /* If innodb_log_group_home_dir was defined it must + contain exactly one path definition under current MySQL */ + + return(FALSE); + } + + srv_log_group_home_dirs = malloc(i * sizeof *srv_log_group_home_dirs); + + /* Then store the actual values to our array */ + + str = input_str; + i = 0; + + while (*str != '\0') { + path = str; + + while (*str != ';' && *str != '\0') { + str++; + } + + if (*str == ';') { + *str = '\0'; + str++; + } + + srv_log_group_home_dirs[i] = path; + + i++; + } + + return(TRUE); +} + +/************************************************************************* +Frees the memory allocated by srv_parse_data_file_paths_and_sizes() +and srv_parse_log_group_home_dirs(). */ +UNIV_INTERN +void +srv_free_paths_and_sizes(void) +/*==========================*/ +{ + free(srv_data_file_names); + srv_data_file_names = NULL; + free(srv_data_file_sizes); + srv_data_file_sizes = NULL; + free(srv_data_file_is_raw_partition); + srv_data_file_is_raw_partition = NULL; + free(srv_log_group_home_dirs); + srv_log_group_home_dirs = NULL; +} + +#ifndef UNIV_HOTBACKUP +/************************************************************************ +I/o-handler thread function. */ +static + +os_thread_ret_t +io_handler_thread( +/*==============*/ + void* arg) +{ + ulint segment; + ulint i; + + segment = *((ulint*)arg); + +#ifdef UNIV_DEBUG_THREAD_CREATION + fprintf(stderr, "Io handler thread %lu starts, id %lu\n", segment, + os_thread_pf(os_thread_get_curr_id())); +#endif + for (i = 0;; i++) { + fil_aio_wait(segment); + + mutex_enter(&ios_mutex); + ios++; + mutex_exit(&ios_mutex); + } + + /* We count the number of threads in os_thread_exit(). A created + thread should always use that to exit and not use return() to exit. + The thread actually never comes here because it is exited in an + os_event_wait(). */ + + os_thread_exit(NULL); + + OS_THREAD_DUMMY_RETURN; +} +#endif /* !UNIV_HOTBACKUP */ + +#ifdef __WIN__ +#define SRV_PATH_SEPARATOR '\\' +#else +#define SRV_PATH_SEPARATOR '/' +#endif + +/************************************************************************* +Normalizes a directory path for Windows: converts slashes to backslashes. */ +UNIV_INTERN +void +srv_normalize_path_for_win( +/*=======================*/ + char* str __attribute__((unused))) /* in/out: null-terminated + character string */ +{ +#ifdef __WIN__ + for (; *str; str++) { + + if (*str == '/') { + *str = '\\'; + } + } +#endif +} + +/************************************************************************* +Adds a slash or a backslash to the end of a string if it is missing +and the string is not empty. */ +UNIV_INTERN +char* +srv_add_path_separator_if_needed( +/*=============================*/ + /* out: string which has the separator if the + string is not empty */ + char* str) /* in: null-terminated character string */ +{ + char* out_str; + ulint len = ut_strlen(str); + + if (len == 0 || str[len - 1] == SRV_PATH_SEPARATOR) { + + return(str); + } + + out_str = ut_malloc(len + 2); + memcpy(out_str, str, len); + out_str[len] = SRV_PATH_SEPARATOR; + out_str[len + 1] = 0; + + return(out_str); +} + +#ifndef UNIV_HOTBACKUP +/************************************************************************* +Calculates the low 32 bits when a file size which is given as a number +database pages is converted to the number of bytes. */ +static +ulint +srv_calc_low32( +/*===========*/ + /* out: low 32 bytes of file size when + expressed in bytes */ + ulint file_size) /* in: file size in database pages */ +{ + return(0xFFFFFFFFUL & (file_size << UNIV_PAGE_SIZE_SHIFT)); +} + +/************************************************************************* +Calculates the high 32 bits when a file size which is given as a number +database pages is converted to the number of bytes. */ +static +ulint +srv_calc_high32( +/*============*/ + /* out: high 32 bytes of file size when + expressed in bytes */ + ulint file_size) /* in: file size in database pages */ +{ + return(file_size >> (32 - UNIV_PAGE_SIZE_SHIFT)); +} + +/************************************************************************* +Creates or opens the log files and closes them. */ +static +ulint +open_or_create_log_file( +/*====================*/ + /* out: DB_SUCCESS or error code */ + ibool create_new_db, /* in: TRUE if we should create a + new database */ + ibool* log_file_created, /* out: TRUE if new log file + created */ + ibool log_file_has_been_opened,/* in: TRUE if a log file has been + opened before: then it is an error + to try to create another log file */ + ulint k, /* in: log group number */ + ulint i) /* in: log file number in group */ +{ + ibool ret; + ulint size; + ulint size_high; + char name[10000]; + + UT_NOT_USED(create_new_db); + + *log_file_created = FALSE; + + srv_normalize_path_for_win(srv_log_group_home_dirs[k]); + srv_log_group_home_dirs[k] = srv_add_path_separator_if_needed( + srv_log_group_home_dirs[k]); + + ut_a(strlen(srv_log_group_home_dirs[k]) + < (sizeof name) - 10 - sizeof "ib_logfile"); + sprintf(name, "%s%s%lu", srv_log_group_home_dirs[k], + "ib_logfile", (ulong) i); + + files[i] = os_file_create(name, OS_FILE_CREATE, OS_FILE_NORMAL, + OS_LOG_FILE, &ret); + if (ret == FALSE) { + if (os_file_get_last_error(FALSE) != OS_FILE_ALREADY_EXISTS +#ifdef UNIV_AIX + /* AIX 5.1 after security patch ML7 may have errno set + to 0 here, which causes our function to return 100; + work around that AIX problem */ + && os_file_get_last_error(FALSE) != 100 +#endif + ) { + fprintf(stderr, + "InnoDB: Error in creating" + " or opening %s\n", name); + + return(DB_ERROR); + } + + files[i] = os_file_create(name, OS_FILE_OPEN, OS_FILE_AIO, + OS_LOG_FILE, &ret); + if (!ret) { + fprintf(stderr, + "InnoDB: Error in opening %s\n", name); + + return(DB_ERROR); + } + + ret = os_file_get_size(files[i], &size, &size_high); + ut_a(ret); + + if (size != srv_calc_low32(srv_log_file_size) + || size_high != srv_calc_high32(srv_log_file_size)) { + + fprintf(stderr, + "InnoDB: Error: log file %s is" + " of different size %lu %lu bytes\n" + "InnoDB: than specified in the .cnf" + " file %lu %lu bytes!\n", + name, (ulong) size_high, (ulong) size, + (ulong) srv_calc_high32(srv_log_file_size), + (ulong) srv_calc_low32(srv_log_file_size)); + + return(DB_ERROR); + } + } else { + *log_file_created = TRUE; + + ut_print_timestamp(stderr); + + fprintf(stderr, + " InnoDB: Log file %s did not exist:" + " new to be created\n", + name); + if (log_file_has_been_opened) { + + return(DB_ERROR); + } + + fprintf(stderr, "InnoDB: Setting log file %s size to %lu MB\n", + name, (ulong) srv_log_file_size + >> (20 - UNIV_PAGE_SIZE_SHIFT)); + + fprintf(stderr, + "InnoDB: Database physically writes the file" + " full: wait...\n"); + + ret = os_file_set_size(name, files[i], + srv_calc_low32(srv_log_file_size), + srv_calc_high32(srv_log_file_size)); + if (!ret) { + fprintf(stderr, + "InnoDB: Error in creating %s:" + " probably out of disk space\n", + name); + + return(DB_ERROR); + } + } + + ret = os_file_close(files[i]); + ut_a(ret); + + if (i == 0) { + /* Create in memory the file space object + which is for this log group */ + + fil_space_create(name, + 2 * k + SRV_LOG_SPACE_FIRST_ID, 0, FIL_LOG); + } + + ut_a(fil_validate()); + + fil_node_create(name, srv_log_file_size, + 2 * k + SRV_LOG_SPACE_FIRST_ID, FALSE); +#ifdef UNIV_LOG_ARCHIVE + /* If this is the first log group, create the file space object + for archived logs. + Under MySQL, no archiving ever done. */ + + if (k == 0 && i == 0) { + arch_space_id = 2 * k + 1 + SRV_LOG_SPACE_FIRST_ID; + + fil_space_create("arch_log_space", arch_space_id, 0, FIL_LOG); + } else { + arch_space_id = ULINT_UNDEFINED; + } +#endif /* UNIV_LOG_ARCHIVE */ + if (i == 0) { + log_group_init(k, srv_n_log_files, + srv_log_file_size * UNIV_PAGE_SIZE, + 2 * k + SRV_LOG_SPACE_FIRST_ID, + SRV_LOG_SPACE_FIRST_ID + 1); /* dummy arch + space id */ + } + + return(DB_SUCCESS); +} + +/************************************************************************* +Creates or opens database data files and closes them. */ +static +ulint +open_or_create_data_files( +/*======================*/ + /* out: DB_SUCCESS or error code */ + ibool* create_new_db, /* out: TRUE if new database should be + created */ +#ifdef UNIV_LOG_ARCHIVE + ulint* min_arch_log_no,/* out: min of archived log + numbers in data files */ + ulint* max_arch_log_no,/* out: max of archived log + numbers in data files */ +#endif /* UNIV_LOG_ARCHIVE */ + ib_uint64_t* min_flushed_lsn,/* out: min of flushed lsn + values in data files */ + ib_uint64_t* max_flushed_lsn,/* out: max of flushed lsn + values in data files */ + ulint* sum_of_new_sizes)/* out: sum of sizes of the + new files added */ +{ + ibool ret; + ulint i; + ibool one_opened = FALSE; + ibool one_created = FALSE; + ulint size; + ulint size_high; + ulint rounded_size_pages; + char name[10000]; + + if (srv_n_data_files >= 1000) { + fprintf(stderr, "InnoDB: can only have < 1000 data files\n" + "InnoDB: you have defined %lu\n", + (ulong) srv_n_data_files); + return(DB_ERROR); + } + + *sum_of_new_sizes = 0; + + *create_new_db = FALSE; + + srv_normalize_path_for_win(srv_data_home); + srv_data_home = srv_add_path_separator_if_needed(srv_data_home); + + for (i = 0; i < srv_n_data_files; i++) { + srv_normalize_path_for_win(srv_data_file_names[i]); + + ut_a(strlen(srv_data_home) + strlen(srv_data_file_names[i]) + < (sizeof name) - 1); + sprintf(name, "%s%s", srv_data_home, srv_data_file_names[i]); + + if (srv_data_file_is_raw_partition[i] == 0) { + + /* First we try to create the file: if it already + exists, ret will get value FALSE */ + + files[i] = os_file_create(name, OS_FILE_CREATE, + OS_FILE_NORMAL, + OS_DATA_FILE, &ret); + + if (ret == FALSE && os_file_get_last_error(FALSE) + != OS_FILE_ALREADY_EXISTS +#ifdef UNIV_AIX + /* AIX 5.1 after security patch ML7 may have + errno set to 0 here, which causes our function + to return 100; work around that AIX problem */ + && os_file_get_last_error(FALSE) != 100 +#endif + ) { + fprintf(stderr, + "InnoDB: Error in creating" + " or opening %s\n", + name); + + return(DB_ERROR); + } + } else if (srv_data_file_is_raw_partition[i] == SRV_NEW_RAW) { + /* The partition is opened, not created; then it is + written over */ + + srv_start_raw_disk_in_use = TRUE; + srv_created_new_raw = TRUE; + + files[i] = os_file_create(name, OS_FILE_OPEN_RAW, + OS_FILE_NORMAL, + OS_DATA_FILE, &ret); + if (!ret) { + fprintf(stderr, + "InnoDB: Error in opening %s\n", name); + + return(DB_ERROR); + } + } else if (srv_data_file_is_raw_partition[i] == SRV_OLD_RAW) { + srv_start_raw_disk_in_use = TRUE; + + ret = FALSE; + } else { + ut_a(0); + } + + if (ret == FALSE) { + /* We open the data file */ + + if (one_created) { + fprintf(stderr, + "InnoDB: Error: data files can only" + " be added at the end\n"); + fprintf(stderr, + "InnoDB: of a tablespace, but" + " data file %s existed beforehand.\n", + name); + return(DB_ERROR); + } + + if (srv_data_file_is_raw_partition[i] == SRV_OLD_RAW) { + files[i] = os_file_create( + name, OS_FILE_OPEN_RAW, + OS_FILE_NORMAL, OS_DATA_FILE, &ret); + } else if (i == 0) { + files[i] = os_file_create( + name, OS_FILE_OPEN_RETRY, + OS_FILE_NORMAL, OS_DATA_FILE, &ret); + } else { + files[i] = os_file_create( + name, OS_FILE_OPEN, OS_FILE_NORMAL, + OS_DATA_FILE, &ret); + } + + if (!ret) { + fprintf(stderr, + "InnoDB: Error in opening %s\n", name); + os_file_get_last_error(TRUE); + + return(DB_ERROR); + } + + if (srv_data_file_is_raw_partition[i] == SRV_OLD_RAW) { + + goto skip_size_check; + } + + ret = os_file_get_size(files[i], &size, &size_high); + ut_a(ret); + /* Round size downward to megabytes */ + + rounded_size_pages + = (size / (1024 * 1024) + 4096 * size_high) + << (20 - UNIV_PAGE_SIZE_SHIFT); + + if (i == srv_n_data_files - 1 + && srv_auto_extend_last_data_file) { + + if (srv_data_file_sizes[i] > rounded_size_pages + || (srv_last_file_size_max > 0 + && srv_last_file_size_max + < rounded_size_pages)) { + + fprintf(stderr, + "InnoDB: Error: auto-extending" + " data file %s is" + " of a different size\n" + "InnoDB: %lu pages (rounded" + " down to MB) than specified" + " in the .cnf file:\n" + "InnoDB: initial %lu pages," + " max %lu (relevant if" + " non-zero) pages!\n", + name, + (ulong) rounded_size_pages, + (ulong) srv_data_file_sizes[i], + (ulong) + srv_last_file_size_max); + + return(DB_ERROR); + } + + srv_data_file_sizes[i] = rounded_size_pages; + } + + if (rounded_size_pages != srv_data_file_sizes[i]) { + + fprintf(stderr, + "InnoDB: Error: data file %s" + " is of a different size\n" + "InnoDB: %lu pages" + " (rounded down to MB)\n" + "InnoDB: than specified" + " in the .cnf file %lu pages!\n", + name, + (ulong) rounded_size_pages, + (ulong) srv_data_file_sizes[i]); + + return(DB_ERROR); + } +skip_size_check: + fil_read_flushed_lsn_and_arch_log_no( + files[i], one_opened, +#ifdef UNIV_LOG_ARCHIVE + min_arch_log_no, max_arch_log_no, +#endif /* UNIV_LOG_ARCHIVE */ + min_flushed_lsn, max_flushed_lsn); + one_opened = TRUE; + } else { + /* We created the data file and now write it full of + zeros */ + + one_created = TRUE; + + if (i > 0) { + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: Data file %s did not" + " exist: new to be created\n", + name); + } else { + fprintf(stderr, + "InnoDB: The first specified" + " data file %s did not exist:\n" + "InnoDB: a new database" + " to be created!\n", name); + *create_new_db = TRUE; + } + + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: Setting file %s size to %lu MB\n", + name, + (ulong) (srv_data_file_sizes[i] + >> (20 - UNIV_PAGE_SIZE_SHIFT))); + + fprintf(stderr, + "InnoDB: Database physically writes the" + " file full: wait...\n"); + + ret = os_file_set_size( + name, files[i], + srv_calc_low32(srv_data_file_sizes[i]), + srv_calc_high32(srv_data_file_sizes[i])); + + if (!ret) { + fprintf(stderr, + "InnoDB: Error in creating %s:" + " probably out of disk space\n", name); + + return(DB_ERROR); + } + + *sum_of_new_sizes = *sum_of_new_sizes + + srv_data_file_sizes[i]; + } + + ret = os_file_close(files[i]); + ut_a(ret); + + if (i == 0) { + fil_space_create(name, 0, 0, FIL_TABLESPACE); + } + + ut_a(fil_validate()); + + fil_node_create(name, srv_data_file_sizes[i], 0, + srv_data_file_is_raw_partition[i] != 0); + } + + ios = 0; + + mutex_create(&ios_mutex, SYNC_NO_ORDER_CHECK); + + return(DB_SUCCESS); +} + +/******************************************************************** +Starts InnoDB and creates a new database if database files +are not found and the user wants. */ +UNIV_INTERN +int +innobase_start_or_create_for_mysql(void) +/*====================================*/ + /* out: DB_SUCCESS or error code */ +{ + buf_pool_t* ret; + ibool create_new_db; + ibool log_file_created; + ibool log_created = FALSE; + ibool log_opened = FALSE; + ib_uint64_t min_flushed_lsn; + ib_uint64_t max_flushed_lsn; +#ifdef UNIV_LOG_ARCHIVE + ulint min_arch_log_no; + ulint max_arch_log_no; +#endif /* UNIV_LOG_ARCHIVE */ + ulint sum_of_new_sizes; + ulint sum_of_data_file_sizes; + ulint tablespace_size_in_header; + ulint err; + ulint i; + my_bool srv_file_per_table_original_value + = srv_file_per_table; + mtr_t mtr; +#ifdef HAVE_DARWIN_THREADS +# ifdef F_FULLFSYNC + /* This executable has been compiled on Mac OS X 10.3 or later. + Assume that F_FULLFSYNC is available at run-time. */ + srv_have_fullfsync = TRUE; +# else /* F_FULLFSYNC */ + /* This executable has been compiled on Mac OS X 10.2 + or earlier. Determine if the executable is running + on Mac OS X 10.3 or later. */ + struct utsname utsname; + if (uname(&utsname)) { + fputs("InnoDB: cannot determine Mac OS X version!\n", stderr); + } else { + srv_have_fullfsync = strcmp(utsname.release, "7.") >= 0; + } + if (!srv_have_fullfsync) { + fputs("InnoDB: On Mac OS X, fsync() may be" + " broken on internal drives,\n" + "InnoDB: making transactions unsafe!\n", stderr); + } +# endif /* F_FULLFSYNC */ +#endif /* HAVE_DARWIN_THREADS */ + + if (sizeof(ulint) != sizeof(void*)) { + fprintf(stderr, + "InnoDB: Error: size of InnoDB's ulint is %lu," + " but size of void* is %lu.\n" + "InnoDB: The sizes should be the same" + " so that on a 64-bit platform you can\n" + "InnoDB: allocate more than 4 GB of memory.", + (ulong)sizeof(ulint), (ulong)sizeof(void*)); + } + + /* System tables are created in tablespace 0. Thus, we must + temporarily clear srv_file_per_table. This is ok, because the + server will not accept connections (which could modify + innodb_file_per_table) until this function has returned. */ + srv_file_per_table = FALSE; +#ifdef UNIV_DEBUG + fprintf(stderr, + "InnoDB: !!!!!!!! UNIV_DEBUG switched on !!!!!!!!!\n"); +#endif + +#ifdef UNIV_IBUF_DEBUG + fprintf(stderr, + "InnoDB: !!!!!!!! UNIV_IBUF_DEBUG switched on !!!!!!!!!\n" + "InnoDB: Crash recovery will fail with UNIV_IBUF_DEBUG\n"); +#endif + +#ifdef UNIV_SYNC_DEBUG + fprintf(stderr, + "InnoDB: !!!!!!!! UNIV_SYNC_DEBUG switched on !!!!!!!!!\n"); +#endif + +#ifdef UNIV_SEARCH_DEBUG + fprintf(stderr, + "InnoDB: !!!!!!!! UNIV_SEARCH_DEBUG switched on !!!!!!!!!\n"); +#endif + +#ifdef UNIV_MEM_DEBUG + fprintf(stderr, + "InnoDB: !!!!!!!! UNIV_MEM_DEBUG switched on !!!!!!!!!\n"); +#endif + + if (UNIV_LIKELY(srv_use_sys_malloc)) { + fprintf(stderr, + "InnoDB: The InnoDB memory heap is disabled\n"); + } + +#ifdef HAVE_GCC_ATOMIC_BUILTINS +#ifdef INNODB_RW_LOCKS_USE_ATOMICS + fprintf(stderr, + "InnoDB: Mutexes and rw_locks use GCC atomic builtins.\n"); +#else /* INNODB_RW_LOCKS_USE_ATOMICS */ + fprintf(stderr, + "InnoDB: Mutexes use GCC atomic builtins, rw_locks do not.\n"); +#endif /* INNODB_RW_LOCKS_USE_ATOMICS */ +#else /* HAVE_GCC_ATOMIC_BUILTINS */ + fprintf(stderr, + "InnoDB: Neither mutexes nor rw_locks use GCC atomic builtins.\n"); +#endif /* HAVE_GCC_ATOMIC_BUILTINS */ + + /* Since InnoDB does not currently clean up all its internal data + structures in MySQL Embedded Server Library server_end(), we + print an error message if someone tries to start up InnoDB a + second time during the process lifetime. */ + + if (srv_start_has_been_called) { + fprintf(stderr, + "InnoDB: Error:startup called second time" + " during the process lifetime.\n" + "InnoDB: In the MySQL Embedded Server Library" + " you cannot call server_init()\n" + "InnoDB: more than once during" + " the process lifetime.\n"); + } + + srv_start_has_been_called = TRUE; + +#ifdef UNIV_DEBUG + log_do_write = TRUE; +#endif /* UNIV_DEBUG */ + /* yydebug = TRUE; */ + + srv_is_being_started = TRUE; + srv_startup_is_before_trx_rollback_phase = TRUE; + os_aio_use_native_aio = FALSE; + +#ifdef __WIN__ + if (os_get_os_version() == OS_WIN95 + || os_get_os_version() == OS_WIN31 + || os_get_os_version() == OS_WINNT) { + + /* On Win 95, 98, ME, Win32 subsystem for Windows 3.1, + and NT use simulated aio. In NT Windows provides async i/o, + but when run in conjunction with InnoDB Hot Backup, it seemed + to corrupt the data files. */ + + os_aio_use_native_aio = FALSE; + } else { + /* On Win 2000 and XP use async i/o */ + os_aio_use_native_aio = TRUE; + } +#endif + if (srv_file_flush_method_str == NULL) { + /* These are the default options */ + + srv_unix_file_flush_method = SRV_UNIX_FSYNC; + + srv_win_file_flush_method = SRV_WIN_IO_UNBUFFERED; +#ifndef __WIN__ + } else if (0 == ut_strcmp(srv_file_flush_method_str, "fsync")) { + srv_unix_file_flush_method = SRV_UNIX_FSYNC; + + } else if (0 == ut_strcmp(srv_file_flush_method_str, "O_DSYNC")) { + srv_unix_file_flush_method = SRV_UNIX_O_DSYNC; + + } else if (0 == ut_strcmp(srv_file_flush_method_str, "O_DIRECT")) { + srv_unix_file_flush_method = SRV_UNIX_O_DIRECT; + + } else if (0 == ut_strcmp(srv_file_flush_method_str, "littlesync")) { + srv_unix_file_flush_method = SRV_UNIX_LITTLESYNC; + + } else if (0 == ut_strcmp(srv_file_flush_method_str, "nosync")) { + srv_unix_file_flush_method = SRV_UNIX_NOSYNC; +#else + } else if (0 == ut_strcmp(srv_file_flush_method_str, "normal")) { + srv_win_file_flush_method = SRV_WIN_IO_NORMAL; + os_aio_use_native_aio = FALSE; + + } else if (0 == ut_strcmp(srv_file_flush_method_str, "unbuffered")) { + srv_win_file_flush_method = SRV_WIN_IO_UNBUFFERED; + os_aio_use_native_aio = FALSE; + + } else if (0 == ut_strcmp(srv_file_flush_method_str, + "async_unbuffered")) { + srv_win_file_flush_method = SRV_WIN_IO_UNBUFFERED; +#endif + } else { + fprintf(stderr, + "InnoDB: Unrecognized value %s for" + " innodb_flush_method\n", + srv_file_flush_method_str); + return(DB_ERROR); + } + + /* Note that the call srv_boot() also changes the values of + some variables to the units used by InnoDB internally */ + + /* Set the maximum number of threads which can wait for a semaphore + inside InnoDB: this is the 'sync wait array' size, as well as the + maximum number of threads that can wait in the 'srv_conc array' for + their time to enter InnoDB. */ + +#if defined(__NETWARE__) + + /* Create less event semaphores because Win 98/ME had + difficulty creating 40000 event semaphores. Comment from + Novell, Inc.: also, these just take a lot of memory on + NetWare. */ + srv_max_n_threads = 1000; +#else + if (srv_buf_pool_size >= 1000 * 1024 * 1024) { + /* If buffer pool is less than 1000 MB, + assume fewer threads. */ + srv_max_n_threads = 50000; + + } else if (srv_buf_pool_size >= 8 * 1024 * 1024) { + + srv_max_n_threads = 10000; + } else { + srv_max_n_threads = 1000; /* saves several MB of memory, + especially in 64-bit + computers */ + } +#endif + err = srv_boot(); + + if (err != DB_SUCCESS) { + + return((int) err); + } + + mutex_create(&srv_monitor_file_mutex, SYNC_NO_ORDER_CHECK); + + if (srv_innodb_status) { + srv_monitor_file_name = mem_alloc( + strlen(fil_path_to_mysql_datadir) + + 20 + sizeof "/innodb_status."); + sprintf(srv_monitor_file_name, "%s/innodb_status.%lu", + fil_path_to_mysql_datadir, os_proc_get_number()); + srv_monitor_file = fopen(srv_monitor_file_name, "w+"); + if (!srv_monitor_file) { + fprintf(stderr, "InnoDB: unable to create %s: %s\n", + srv_monitor_file_name, strerror(errno)); + return(DB_ERROR); + } + } else { + srv_monitor_file_name = NULL; + srv_monitor_file = os_file_create_tmpfile(); + if (!srv_monitor_file) { + return(DB_ERROR); + } + } + + mutex_create(&srv_dict_tmpfile_mutex, SYNC_DICT_OPERATION); + + srv_dict_tmpfile = os_file_create_tmpfile(); + if (!srv_dict_tmpfile) { + return(DB_ERROR); + } + + mutex_create(&srv_misc_tmpfile_mutex, SYNC_ANY_LATCH); + + srv_misc_tmpfile = os_file_create_tmpfile(); + if (!srv_misc_tmpfile) { + return(DB_ERROR); + } + + /* over write innodb_file_io_threads */ + srv_n_file_io_threads = 2 + srv_n_read_io_threads + srv_n_write_io_threads; + + /* Restrict the maximum number of file i/o threads */ + if (srv_n_file_io_threads > SRV_MAX_N_IO_THREADS) { + + srv_n_file_io_threads = SRV_MAX_N_IO_THREADS; + srv_n_read_io_threads = srv_n_write_io_threads = (SRV_MAX_N_IO_THREADS - 2) / 2; + } + + if (!os_aio_use_native_aio) { + /* In simulated aio we currently have use only for 4 threads */ + /*srv_n_file_io_threads = 4;*/ + + os_aio_init(8 * SRV_N_PENDING_IOS_PER_THREAD + * srv_n_file_io_threads, + srv_n_read_io_threads, srv_n_write_io_threads, + SRV_MAX_N_PENDING_SYNC_IOS * 8); + } else { + os_aio_init(SRV_N_PENDING_IOS_PER_THREAD + * srv_n_file_io_threads, + srv_n_read_io_threads, srv_n_write_io_threads, + SRV_MAX_N_PENDING_SYNC_IOS); + } + + fil_init(srv_max_n_open_files); + + ret = buf_pool_init(); + + if (ret == NULL) { + fprintf(stderr, + "InnoDB: Fatal error: cannot allocate the memory" + " for the buffer pool\n"); + + return(DB_ERROR); + } + +#ifdef UNIV_DEBUG + /* We have observed deadlocks with a 5MB buffer pool but + the actual lower limit could very well be a little higher. */ + + if (srv_buf_pool_size <= 5 * 1024 * 1024) { + + fprintf(stderr, "InnoDB: Warning: Small buffer pool size " + "(%luM), the flst_validate() debug function " + "can cause a deadlock if the buffer pool fills up.\n", + srv_buf_pool_size / 1024 / 1024); + } +#endif + + fsp_init(); + log_init(); + + lock_sys_create(srv_lock_table_size); + + /* Create i/o-handler threads: */ + + for (i = 0; i < srv_n_file_io_threads; i++) { + n[i] = i; + + os_thread_create(io_handler_thread, n + i, thread_ids + i); + } + +#ifdef UNIV_LOG_ARCHIVE + if (0 != ut_strcmp(srv_log_group_home_dirs[0], srv_arch_dir)) { + fprintf(stderr, + "InnoDB: Error: you must set the log group" + " home dir in my.cnf the\n" + "InnoDB: same as log arch dir.\n"); + + return(DB_ERROR); + } +#endif /* UNIV_LOG_ARCHIVE */ + + if (srv_n_log_files * srv_log_file_size >= 262144) { + fprintf(stderr, + "InnoDB: Error: combined size of log files" + " must be < 4 GB\n"); + + return(DB_ERROR); + } + + sum_of_new_sizes = 0; + + for (i = 0; i < srv_n_data_files; i++) { +#ifndef __WIN__ + if (sizeof(off_t) < 5 && srv_data_file_sizes[i] >= 262144) { + fprintf(stderr, + "InnoDB: Error: file size must be < 4 GB" + " with this MySQL binary\n" + "InnoDB: and operating system combination," + " in some OS's < 2 GB\n"); + + return(DB_ERROR); + } +#endif + sum_of_new_sizes += srv_data_file_sizes[i]; + } + + if (sum_of_new_sizes < 640) { + fprintf(stderr, + "InnoDB: Error: tablespace size must be" + " at least 10 MB\n"); + + return(DB_ERROR); + } + + err = open_or_create_data_files(&create_new_db, +#ifdef UNIV_LOG_ARCHIVE + &min_arch_log_no, &max_arch_log_no, +#endif /* UNIV_LOG_ARCHIVE */ + &min_flushed_lsn, &max_flushed_lsn, + &sum_of_new_sizes); + if (err != DB_SUCCESS) { + fprintf(stderr, + "InnoDB: Could not open or create data files.\n" + "InnoDB: If you tried to add new data files," + " and it failed here,\n" + "InnoDB: you should now edit innodb_data_file_path" + " in my.cnf back\n" + "InnoDB: to what it was, and remove the" + " new ibdata files InnoDB created\n" + "InnoDB: in this failed attempt. InnoDB only wrote" + " those files full of\n" + "InnoDB: zeros, but did not yet use them in any way." + " But be careful: do not\n" + "InnoDB: remove old data files" + " which contain your precious data!\n"); + + return((int) err); + } + +#ifdef UNIV_LOG_ARCHIVE + srv_normalize_path_for_win(srv_arch_dir); + srv_arch_dir = srv_add_path_separator_if_needed(srv_arch_dir); +#endif /* UNIV_LOG_ARCHIVE */ + + for (i = 0; i < srv_n_log_files; i++) { + err = open_or_create_log_file(create_new_db, &log_file_created, + log_opened, 0, i); + if (err != DB_SUCCESS) { + + return((int) err); + } + + if (log_file_created) { + log_created = TRUE; + } else { + log_opened = TRUE; + } + if ((log_opened && create_new_db) + || (log_opened && log_created)) { + fprintf(stderr, + "InnoDB: Error: all log files must be" + " created at the same time.\n" + "InnoDB: All log files must be" + " created also in database creation.\n" + "InnoDB: If you want bigger or smaller" + " log files, shut down the\n" + "InnoDB: database and make sure there" + " were no errors in shutdown.\n" + "InnoDB: Then delete the existing log files." + " Edit the .cnf file\n" + "InnoDB: and start the database again.\n"); + + return(DB_ERROR); + } + } + + /* Open all log files and data files in the system tablespace: we + keep them open until database shutdown */ + + fil_open_log_and_system_tablespace_files(); + + if (log_created && !create_new_db +#ifdef UNIV_LOG_ARCHIVE + && !srv_archive_recovery +#endif /* UNIV_LOG_ARCHIVE */ + ) { + if (max_flushed_lsn != min_flushed_lsn +#ifdef UNIV_LOG_ARCHIVE + || max_arch_log_no != min_arch_log_no +#endif /* UNIV_LOG_ARCHIVE */ + ) { + fprintf(stderr, + "InnoDB: Cannot initialize created" + " log files because\n" + "InnoDB: data files were not in sync" + " with each other\n" + "InnoDB: or the data files are corrupt.\n"); + + return(DB_ERROR); + } + + if (max_flushed_lsn < (ib_uint64_t) 1000) { + fprintf(stderr, + "InnoDB: Cannot initialize created" + " log files because\n" + "InnoDB: data files are corrupt," + " or new data files were\n" + "InnoDB: created when the database" + " was started previous\n" + "InnoDB: time but the database" + " was not shut down\n" + "InnoDB: normally after that.\n"); + + return(DB_ERROR); + } + + mutex_enter(&(log_sys->mutex)); + +#ifdef UNIV_LOG_ARCHIVE + /* Do not + 1 arch_log_no because we do not use log + archiving */ + recv_reset_logs(max_flushed_lsn, max_arch_log_no, TRUE); +#else + recv_reset_logs(max_flushed_lsn, TRUE); +#endif /* UNIV_LOG_ARCHIVE */ + + mutex_exit(&(log_sys->mutex)); + } + + trx_sys_file_format_init(); + + if (create_new_db) { + mtr_start(&mtr); + fsp_header_init(0, sum_of_new_sizes, &mtr); + + mtr_commit(&mtr); + + trx_sys_create(); + dict_create(); + srv_startup_is_before_trx_rollback_phase = FALSE; + + if (srv_extra_rsegments) + trx_sys_create_extra_rseg(srv_extra_rsegments); +#ifdef UNIV_LOG_ARCHIVE + } else if (srv_archive_recovery) { + fprintf(stderr, + "InnoDB: Starting archive" + " recovery from a backup...\n"); + err = recv_recovery_from_archive_start( + min_flushed_lsn, srv_archive_recovery_limit_lsn, + min_arch_log_no); + if (err != DB_SUCCESS) { + + return(DB_ERROR); + } + /* Since ibuf init is in dict_boot, and ibuf is needed + in any disk i/o, first call dict_boot */ + + dict_boot(); + trx_sys_init_at_db_start(); + srv_startup_is_before_trx_rollback_phase = FALSE; + + /* Initialize the fsp free limit global variable in the log + system */ + fsp_header_get_free_limit(); + + recv_recovery_from_archive_finish(); +#endif /* UNIV_LOG_ARCHIVE */ + } else { + + /* Check if we support the max format that is stamped + on the system tablespace. + Note: We are NOT allowed to make any modifications to + the TRX_SYS_PAGE_NO page before recovery because this + page also contains the max_trx_id etc. important system + variables that are required for recovery. We need to + ensure that we return the system to a state where normal + recovery is guaranteed to work. We do this by + invalidating the buffer cache, this will force the + reread of the page and restoration to its last known + consistent state, this is REQUIRED for the recovery + process to work. */ + err = trx_sys_file_format_max_check( + srv_check_file_format_at_startup); + + if (err != DB_SUCCESS) { + return(err); + } + + /* Invalidate the buffer pool to ensure that we reread + the page that we read above, during recovery. + Note that this is not as heavy weight as it seems. At + this point there will be only ONE page in the buf_LRU + and there must be no page in the buf_flush list. */ + buf_pool_invalidate(); + + /* We always try to do a recovery, even if the database had + been shut down normally: this is the normal startup path */ + + err = recv_recovery_from_checkpoint_start(LOG_CHECKPOINT, + IB_ULONGLONG_MAX, + min_flushed_lsn, + max_flushed_lsn); + if (err != DB_SUCCESS) { + + return(DB_ERROR); + } + + /* Since the insert buffer init is in dict_boot, and the + insert buffer is needed in any disk i/o, first we call + dict_boot(). Note that trx_sys_init_at_db_start() only needs + to access space 0, and the insert buffer at this stage already + works for space 0. */ + + dict_boot(); + trx_sys_init_at_db_start(); + + if (srv_force_recovery < SRV_FORCE_NO_IBUF_MERGE) { + /* The following call is necessary for the insert + buffer to work with multiple tablespaces. We must + know the mapping between space id's and .ibd file + names. + + In a crash recovery, we check that the info in data + dictionary is consistent with what we already know + about space id's from the call of + fil_load_single_table_tablespaces(). + + In a normal startup, we create the space objects for + every table in the InnoDB data dictionary that has + an .ibd file. + + We also determine the maximum tablespace id used. + + TODO: We may have incomplete transactions in the + data dictionary tables. Does that harm the scanning of + the data dictionary below? */ + + dict_check_tablespaces_and_store_max_id( + recv_needed_recovery); + } + + srv_startup_is_before_trx_rollback_phase = FALSE; + + /* Initialize the fsp free limit global variable in the log + system */ + fsp_header_get_free_limit(); + + /* recv_recovery_from_checkpoint_finish needs trx lists which + are initialized in trx_sys_init_at_db_start(). */ + + recv_recovery_from_checkpoint_finish(); + + /* It is possible that file_format tag has never + been set. In this case we initialize it to minimum + value. Important to note that we can do it ONLY after + we have finished the recovery process so that the + image of TRX_SYS_PAGE_NO is not stale. */ + trx_sys_file_format_tag_init(); + } + + if (!create_new_db && sum_of_new_sizes > 0) { + /* New data file(s) were added */ + mtr_start(&mtr); + + fsp_header_inc_size(0, sum_of_new_sizes, &mtr); + + mtr_commit(&mtr); + + /* Immediately write the log record about increased tablespace + size to disk, so that it is durable even if mysqld would crash + quickly */ + + log_buffer_flush_to_disk(); + } + +#ifdef UNIV_LOG_ARCHIVE + /* Archiving is always off under MySQL */ + if (!srv_log_archive_on) { + ut_a(DB_SUCCESS == log_archive_noarchivelog()); + } else { + mutex_enter(&(log_sys->mutex)); + + start_archive = FALSE; + + if (log_sys->archiving_state == LOG_ARCH_OFF) { + start_archive = TRUE; + } + + mutex_exit(&(log_sys->mutex)); + + if (start_archive) { + ut_a(DB_SUCCESS == log_archive_archivelog()); + } + } +#endif /* UNIV_LOG_ARCHIVE */ + + /* fprintf(stderr, "Max allowed record size %lu\n", + page_get_free_space_of_empty() / 2); */ + + /* Create the thread which watches the timeouts for lock waits + and prints InnoDB monitor info */ + + os_thread_create(&srv_lock_timeout_and_monitor_thread, NULL, + thread_ids + 2 + SRV_MAX_N_IO_THREADS); + + /* Create the thread which warns of long semaphore waits */ + os_thread_create(&srv_error_monitor_thread, NULL, + thread_ids + 3 + SRV_MAX_N_IO_THREADS); + srv_is_being_started = FALSE; + + if (trx_doublewrite == NULL) { + /* Create the doublewrite buffer to a new tablespace */ + + trx_sys_create_doublewrite_buf(); + } + + err = dict_create_or_check_foreign_constraint_tables(); + + if (err != DB_SUCCESS) { + return((int)DB_ERROR); + } + + /* Create the master thread which does purge and other utility + operations */ + + os_thread_create(&srv_master_thread, NULL, thread_ids + + (1 + SRV_MAX_N_IO_THREADS)); +#ifdef UNIV_DEBUG + /* buf_debug_prints = TRUE; */ +#endif /* UNIV_DEBUG */ + sum_of_data_file_sizes = 0; + + for (i = 0; i < srv_n_data_files; i++) { + sum_of_data_file_sizes += srv_data_file_sizes[i]; + } + + tablespace_size_in_header = fsp_header_get_tablespace_size(); + + if (!srv_auto_extend_last_data_file + && sum_of_data_file_sizes != tablespace_size_in_header) { + + fprintf(stderr, + "InnoDB: Error: tablespace size" + " stored in header is %lu pages, but\n" + "InnoDB: the sum of data file sizes is %lu pages\n", + (ulong) tablespace_size_in_header, + (ulong) sum_of_data_file_sizes); + + if (srv_force_recovery == 0 + && sum_of_data_file_sizes < tablespace_size_in_header) { + /* This is a fatal error, the tail of a tablespace is + missing */ + + fprintf(stderr, + "InnoDB: Cannot start InnoDB." + " The tail of the system tablespace is\n" + "InnoDB: missing. Have you edited" + " innodb_data_file_path in my.cnf in an\n" + "InnoDB: inappropriate way, removing" + " ibdata files from there?\n" + "InnoDB: You can set innodb_force_recovery=1" + " in my.cnf to force\n" + "InnoDB: a startup if you are trying" + " to recover a badly corrupt database.\n"); + + return(DB_ERROR); + } + } + + if (srv_auto_extend_last_data_file + && sum_of_data_file_sizes < tablespace_size_in_header) { + + fprintf(stderr, + "InnoDB: Error: tablespace size stored in header" + " is %lu pages, but\n" + "InnoDB: the sum of data file sizes" + " is only %lu pages\n", + (ulong) tablespace_size_in_header, + (ulong) sum_of_data_file_sizes); + + if (srv_force_recovery == 0) { + + fprintf(stderr, + "InnoDB: Cannot start InnoDB. The tail of" + " the system tablespace is\n" + "InnoDB: missing. Have you edited" + " innodb_data_file_path in my.cnf in an\n" + "InnoDB: inappropriate way, removing" + " ibdata files from there?\n" + "InnoDB: You can set innodb_force_recovery=1" + " in my.cnf to force\n" + "InnoDB: a startup if you are trying to" + " recover a badly corrupt database.\n"); + + return(DB_ERROR); + } + } + + /* Check that os_fast_mutexes work as expected */ + os_fast_mutex_init(&srv_os_test_mutex); + + if (0 != os_fast_mutex_trylock(&srv_os_test_mutex)) { + fprintf(stderr, + "InnoDB: Error: pthread_mutex_trylock returns" + " an unexpected value on\n" + "InnoDB: success! Cannot continue.\n"); + exit(1); + } + + os_fast_mutex_unlock(&srv_os_test_mutex); + + os_fast_mutex_lock(&srv_os_test_mutex); + + os_fast_mutex_unlock(&srv_os_test_mutex); + + os_fast_mutex_free(&srv_os_test_mutex); + + if (srv_print_verbose_log) { + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB Plugin %s started; " + "log sequence number %llu\n", + INNODB_VERSION_STR, srv_start_lsn); + } + + if (srv_force_recovery > 0) { + fprintf(stderr, + "InnoDB: !!! innodb_force_recovery" + " is set to %lu !!!\n", + (ulong) srv_force_recovery); + } + + fflush(stderr); + + if (trx_doublewrite_must_reset_space_ids) { + /* Actually, we did not change the undo log format between + 4.0 and 4.1.1, and we would not need to run purge to + completion. Note also that the purge algorithm in 4.1.1 + can process the the history list again even after a full + purge, because our algorithm does not cut the end of the + history list in all cases so that it would become empty + after a full purge. That mean that we may purge 4.0 type + undo log even after this phase. + + The insert buffer record format changed between 4.0 and + 4.1.1. It is essential that the insert buffer is emptied + here! */ + + fprintf(stderr, + "InnoDB: You are upgrading to an" + " InnoDB version which allows multiple\n" + "InnoDB: tablespaces. Wait that purge" + " and insert buffer merge run to\n" + "InnoDB: completion...\n"); + for (;;) { + os_thread_sleep(1000000); + + if (0 == strcmp(srv_main_thread_op_info, + "waiting for server activity")) { + + ut_a(ibuf_is_empty()); + + break; + } + } + fprintf(stderr, + "InnoDB: Full purge and insert buffer merge" + " completed.\n"); + + trx_sys_mark_upgraded_to_multiple_tablespaces(); + + fprintf(stderr, + "InnoDB: You have now successfully upgraded" + " to the multiple tablespaces\n" + "InnoDB: format. You should NOT DOWNGRADE" + " to an earlier version of\n" + "InnoDB: InnoDB! But if you absolutely need to" + " downgrade, see\n" + "InnoDB: http://dev.mysql.com/doc/refman/5.1/en/" + "multiple-tablespaces.html\n" + "InnoDB: for instructions.\n"); + } + + if (srv_force_recovery == 0) { + /* In the insert buffer we may have even bigger tablespace + id's, because we may have dropped those tablespaces, but + insert buffer merge has not had time to clean the records from + the ibuf tree. */ + + ibuf_update_max_tablespace_id(); + } + + srv_file_per_table = srv_file_per_table_original_value; + + srv_was_started = TRUE; + + return((int) DB_SUCCESS); +} + +/******************************************************************** +Shuts down the InnoDB database. */ +UNIV_INTERN +int +innobase_shutdown_for_mysql(void) +/*=============================*/ + /* out: DB_SUCCESS or error code */ +{ + ulint i; +#ifdef __NETWARE__ + extern ibool panic_shutdown; +#endif + if (!srv_was_started) { + if (srv_is_being_started) { + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: Warning: shutting down" + " a not properly started\n" + "InnoDB: or created database!\n"); + } + + return(DB_SUCCESS); + } + + /* 1. Flush the buffer pool to disk, write the current lsn to + the tablespace header(s), and copy all log data to archive. + The step 1 is the real InnoDB shutdown. The remaining steps 2 - ... + just free data structures after the shutdown. */ + + + if (srv_fast_shutdown == 2) { + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: MySQL has requested a very fast shutdown" + " without flushing " + "the InnoDB buffer pool to data files." + " At the next mysqld startup " + "InnoDB will do a crash recovery!\n"); + } + +#ifdef __NETWARE__ + if(!panic_shutdown) +#endif + logs_empty_and_mark_files_at_shutdown(); + + if (srv_conc_n_threads != 0) { + fprintf(stderr, + "InnoDB: Warning: query counter shows %ld queries" + " still\n" + "InnoDB: inside InnoDB at shutdown\n", + srv_conc_n_threads); + } + + /* 2. Make all threads created by InnoDB to exit */ + + srv_shutdown_state = SRV_SHUTDOWN_EXIT_THREADS; + + /* In a 'very fast' shutdown, we do not need to wait for these threads + to die; all which counts is that we flushed the log; a 'very fast' + shutdown is essentially a crash. */ + + if (srv_fast_shutdown == 2) { + return(DB_SUCCESS); + } + + /* All threads end up waiting for certain events. Put those events + to the signaled state. Then the threads will exit themselves in + os_thread_event_wait(). */ + + for (i = 0; i < 1000; i++) { + /* NOTE: IF YOU CREATE THREADS IN INNODB, YOU MUST EXIT THEM + HERE OR EARLIER */ + + /* a. Let the lock timeout thread exit */ + os_event_set(srv_lock_timeout_thread_event); + + /* b. srv error monitor thread exits automatically, no need + to do anything here */ + + /* c. We wake the master thread so that it exits */ + srv_wake_master_thread(); + + /* d. Exit the i/o threads */ + + os_aio_wake_all_threads_at_shutdown(); + + os_mutex_enter(os_sync_mutex); + + if (os_thread_count == 0) { + /* All the threads have exited or are just exiting; + NOTE that the threads may not have completed their + exit yet. Should we use pthread_join() to make sure + they have exited? Now we just sleep 0.1 seconds and + hope that is enough! */ + + os_mutex_exit(os_sync_mutex); + + os_thread_sleep(100000); + + break; + } + + os_mutex_exit(os_sync_mutex); + + os_thread_sleep(100000); + } + + if (i == 1000) { + fprintf(stderr, + "InnoDB: Warning: %lu threads created by InnoDB" + " had not exited at shutdown!\n", + (ulong) os_thread_count); + } + + if (srv_monitor_file) { + fclose(srv_monitor_file); + srv_monitor_file = 0; + if (srv_monitor_file_name) { + unlink(srv_monitor_file_name); + mem_free(srv_monitor_file_name); + } + } + if (srv_dict_tmpfile) { + fclose(srv_dict_tmpfile); + srv_dict_tmpfile = 0; + } + + if (srv_misc_tmpfile) { + fclose(srv_misc_tmpfile); + srv_misc_tmpfile = 0; + } + + trx_sys_file_format_close(); + + mutex_free(&srv_monitor_file_mutex); + mutex_free(&srv_dict_tmpfile_mutex); + mutex_free(&srv_misc_tmpfile_mutex); + + /* 3. Free all InnoDB's own mutexes and the os_fast_mutexes inside + them */ + sync_close(); + + /* 4. Free the os_conc_mutex and all os_events and os_mutexes */ + + srv_free(); + os_sync_free(); + + /* Check that all read views are closed except read view owned + by a purge. */ + + if (UT_LIST_GET_LEN(trx_sys->view_list) > 1) { + fprintf(stderr, + "InnoDB: Error: all read views were not closed" + " before shutdown:\n" + "InnoDB: %lu read views open \n", + UT_LIST_GET_LEN(trx_sys->view_list) - 1); + } + + /* 5. Free all allocated memory and the os_fast_mutex created in + ut0mem.c */ + + buf_pool_free(); + ut_free_all_mem(); + + if (os_thread_count != 0 + || os_event_count != 0 + || os_mutex_count != 0 + || os_fast_mutex_count != 0) { + fprintf(stderr, + "InnoDB: Warning: some resources were not" + " cleaned up in shutdown:\n" + "InnoDB: threads %lu, events %lu," + " os_mutexes %lu, os_fast_mutexes %lu\n", + (ulong) os_thread_count, (ulong) os_event_count, + (ulong) os_mutex_count, (ulong) os_fast_mutex_count); + } + + if (dict_foreign_err_file) { + fclose(dict_foreign_err_file); + } + if (lock_latest_err_file) { + fclose(lock_latest_err_file); + } + + if (srv_print_verbose_log) { + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: Shutdown completed;" + " log sequence number %llu\n", + srv_shutdown_lsn); + } + + srv_was_started = FALSE; + + return((int) DB_SUCCESS); +} + +#ifdef __NETWARE__ +void set_panic_flag_for_netware() +{ + extern ibool panic_shutdown; + panic_shutdown = TRUE; +} +#endif /* __NETWARE__ */ +#endif /* !UNIV_HOTBACKUP */ === added directory 'storage/xtradb/sync' === added file 'storage/xtradb/sync/sync0arr.c' --- a/storage/xtradb/sync/sync0arr.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/sync/sync0arr.c 2009-04-27 04:54:14 +0000 @@ -0,0 +1,1029 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. +Copyright (c) 2008, Google Inc. + +Portions of this file contain modifications contributed and copyrighted by +Google, Inc. Those modifications are gratefully acknowledged and are described +briefly in the InnoDB documentation. The contributions by Google are +incorporated with their permission, and subject to the conditions contained in +the file COPYING.Google. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +The wait array used in synchronization primitives + +Created 9/5/1995 Heikki Tuuri +*******************************************************/ + +#include "sync0arr.h" +#ifdef UNIV_NONINL +#include "sync0arr.ic" +#endif + +#include "sync0sync.h" +#include "sync0rw.h" +#include "os0sync.h" +#include "os0file.h" +#include "srv0srv.h" + +/* + WAIT ARRAY + ========== + +The wait array consists of cells each of which has an +an operating system event object created for it. The threads +waiting for a mutex, for example, can reserve a cell +in the array and suspend themselves to wait for the event +to become signaled. When using the wait array, remember to make +sure that some thread holding the synchronization object +will eventually know that there is a waiter in the array and +signal the object, to prevent infinite wait. +Why we chose to implement a wait array? First, to make +mutexes fast, we had to code our own implementation of them, +which only in usually uncommon cases resorts to using +slow operating system primitives. Then we had the choice of +assigning a unique OS event for each mutex, which would +be simpler, or using a global wait array. In some operating systems, +the global wait array solution is more efficient and flexible, +because we can do with a very small number of OS events, +say 200. In NT 3.51, allocating events seems to be a quadratic +algorithm, because 10 000 events are created fast, but +100 000 events takes a couple of minutes to create. + +As of 5.0.30 the above mentioned design is changed. Since now +OS can handle millions of wait events efficiently, we no longer +have this concept of each cell of wait array having one event. +Instead, now the event that a thread wants to wait on is embedded +in the wait object (mutex or rw_lock). We still keep the global +wait array for the sake of diagnostics and also to avoid infinite +wait The error_monitor thread scans the global wait array to signal +any waiting threads who have missed the signal. */ + +/* A cell where an individual thread may wait suspended +until a resource is released. The suspending is implemented +using an operating system event semaphore. */ +struct sync_cell_struct { + void* wait_object; /* pointer to the object the + thread is waiting for; if NULL + the cell is free for use */ + mutex_t* old_wait_mutex; /* the latest wait mutex in cell */ + rw_lock_t* old_wait_rw_lock;/* the latest wait rw-lock in cell */ + ulint request_type; /* lock type requested on the + object */ + const char* file; /* in debug version file where + requested */ + ulint line; /* in debug version line where + requested */ + os_thread_id_t thread; /* thread id of this waiting + thread */ + ibool waiting; /* TRUE if the thread has already + called sync_array_event_wait + on this cell */ + ib_int64_t signal_count; /* We capture the signal_count + of the wait_object when we + reset the event. This value is + then passed on to os_event_wait + and we wait only if the event + has not been signalled in the + period between the reset and + wait call. */ + time_t reservation_time;/* time when the thread reserved + the wait cell */ +}; + +/* NOTE: It is allowed for a thread to wait +for an event allocated for the array without owning the +protecting mutex (depending on the case: OS or database mutex), but +all changes (set or reset) to the state of the event must be made +while owning the mutex. */ +struct sync_array_struct { + ulint n_reserved; /* number of currently reserved + cells in the wait array */ + ulint n_cells; /* number of cells in the + wait array */ + sync_cell_t* array; /* pointer to wait array */ + ulint protection; /* this flag tells which + mutex protects the data */ + mutex_t mutex; /* possible database mutex + protecting this data structure */ + os_mutex_t os_mutex; /* Possible operating system mutex + protecting the data structure. + As this data structure is used in + constructing the database mutex, + to prevent infinite recursion + in implementation, we fall back to + an OS mutex. */ + ulint sg_count; /* count of how many times an + object has been signalled */ + ulint res_count; /* count of cell reservations + since creation of the array */ +}; + +#ifdef UNIV_SYNC_DEBUG +/********************************************************************** +This function is called only in the debug version. Detects a deadlock +of one or more threads because of waits of semaphores. */ +static +ibool +sync_array_detect_deadlock( +/*=======================*/ + /* out: TRUE if deadlock detected */ + sync_array_t* arr, /* in: wait array; NOTE! the caller must + own the mutex to array */ + sync_cell_t* start, /* in: cell where recursive search started */ + sync_cell_t* cell, /* in: cell to search */ + ulint depth); /* in: recursion depth */ +#endif /* UNIV_SYNC_DEBUG */ + +/********************************************************************* +Gets the nth cell in array. */ +static +sync_cell_t* +sync_array_get_nth_cell( +/*====================*/ + /* out: cell */ + sync_array_t* arr, /* in: sync array */ + ulint n) /* in: index */ +{ + ut_a(arr); + ut_a(n < arr->n_cells); + + return(arr->array + n); +} + +/********************************************************************** +Reserves the mutex semaphore protecting a sync array. */ +static +void +sync_array_enter( +/*=============*/ + sync_array_t* arr) /* in: sync wait array */ +{ + ulint protection; + + protection = arr->protection; + + if (protection == SYNC_ARRAY_OS_MUTEX) { + os_mutex_enter(arr->os_mutex); + } else if (protection == SYNC_ARRAY_MUTEX) { + mutex_enter(&(arr->mutex)); + } else { + ut_error; + } +} + +/********************************************************************** +Releases the mutex semaphore protecting a sync array. */ +static +void +sync_array_exit( +/*============*/ + sync_array_t* arr) /* in: sync wait array */ +{ + ulint protection; + + protection = arr->protection; + + if (protection == SYNC_ARRAY_OS_MUTEX) { + os_mutex_exit(arr->os_mutex); + } else if (protection == SYNC_ARRAY_MUTEX) { + mutex_exit(&(arr->mutex)); + } else { + ut_error; + } +} + +/*********************************************************************** +Creates a synchronization wait array. It is protected by a mutex +which is automatically reserved when the functions operating on it +are called. */ +UNIV_INTERN +sync_array_t* +sync_array_create( +/*==============*/ + /* out, own: created wait array */ + ulint n_cells, /* in: number of cells in the array + to create */ + ulint protection) /* in: either SYNC_ARRAY_OS_MUTEX or + SYNC_ARRAY_MUTEX: determines the type + of mutex protecting the data structure */ +{ + sync_array_t* arr; + sync_cell_t* cell_array; + sync_cell_t* cell; + ulint i; + + ut_a(n_cells > 0); + + /* Allocate memory for the data structures */ + arr = ut_malloc(sizeof(sync_array_t)); + + cell_array = ut_malloc(sizeof(sync_cell_t) * n_cells); + + arr->n_cells = n_cells; + arr->n_reserved = 0; + arr->array = cell_array; + arr->protection = protection; + arr->sg_count = 0; + arr->res_count = 0; + + /* Then create the mutex to protect the wait array complex */ + if (protection == SYNC_ARRAY_OS_MUTEX) { + arr->os_mutex = os_mutex_create(NULL); + } else if (protection == SYNC_ARRAY_MUTEX) { + mutex_create(&arr->mutex, SYNC_NO_ORDER_CHECK); + } else { + ut_error; + } + + for (i = 0; i < n_cells; i++) { + cell = sync_array_get_nth_cell(arr, i); + cell->wait_object = NULL; + cell->waiting = FALSE; + cell->signal_count = 0; + } + + return(arr); +} + +/********************************************************************** +Frees the resources in a wait array. */ +UNIV_INTERN +void +sync_array_free( +/*============*/ + sync_array_t* arr) /* in, own: sync wait array */ +{ + ulint protection; + + ut_a(arr->n_reserved == 0); + + sync_array_validate(arr); + + protection = arr->protection; + + /* Release the mutex protecting the wait array complex */ + + if (protection == SYNC_ARRAY_OS_MUTEX) { + os_mutex_free(arr->os_mutex); + } else if (protection == SYNC_ARRAY_MUTEX) { + mutex_free(&(arr->mutex)); + } else { + ut_error; + } + + ut_free(arr->array); + ut_free(arr); +} + +/************************************************************************ +Validates the integrity of the wait array. Checks +that the number of reserved cells equals the count variable. */ +UNIV_INTERN +void +sync_array_validate( +/*================*/ + sync_array_t* arr) /* in: sync wait array */ +{ + ulint i; + sync_cell_t* cell; + ulint count = 0; + + sync_array_enter(arr); + + for (i = 0; i < arr->n_cells; i++) { + cell = sync_array_get_nth_cell(arr, i); + if (cell->wait_object != NULL) { + count++; + } + } + + ut_a(count == arr->n_reserved); + + sync_array_exit(arr); +} + +/*********************************************************************** +Returns the event that the thread owning the cell waits for. */ +static +os_event_t +sync_cell_get_event( +/*================*/ + sync_cell_t* cell) /* in: non-empty sync array cell */ +{ + ulint type = cell->request_type; + + if (type == SYNC_MUTEX) { + return(((mutex_t *) cell->wait_object)->event); + } else if (type == RW_LOCK_WAIT_EX) { + return(((rw_lock_t *) cell->wait_object)->wait_ex_event); + } else { /* RW_LOCK_SHARED and RW_LOCK_EX wait on the same event */ + return(((rw_lock_t *) cell->wait_object)->event); + } +} + +/********************************************************************** +Reserves a wait array cell for waiting for an object. +The event of the cell is reset to nonsignalled state. */ +UNIV_INTERN +void +sync_array_reserve_cell( +/*====================*/ + sync_array_t* arr, /* in: wait array */ + void* object, /* in: pointer to the object to wait for */ + ulint type, /* in: lock request type */ + const char* file, /* in: file where requested */ + ulint line, /* in: line where requested */ + ulint* index) /* out: index of the reserved cell */ +{ + sync_cell_t* cell; + os_event_t event; + ulint i; + + ut_a(object); + ut_a(index); + + sync_array_enter(arr); + + arr->res_count++; + + /* Reserve a new cell. */ + for (i = 0; i < arr->n_cells; i++) { + cell = sync_array_get_nth_cell(arr, i); + + if (cell->wait_object == NULL) { + + cell->waiting = FALSE; + cell->wait_object = object; + + if (type == SYNC_MUTEX) { + cell->old_wait_mutex = object; + } else { + cell->old_wait_rw_lock = object; + } + + cell->request_type = type; + + cell->file = file; + cell->line = line; + + arr->n_reserved++; + + *index = i; + + sync_array_exit(arr); + + /* Make sure the event is reset and also store + the value of signal_count at which the event + was reset. */ + event = sync_cell_get_event(cell); + cell->signal_count = os_event_reset(event); + + cell->reservation_time = time(NULL); + + cell->thread = os_thread_get_curr_id(); + + return; + } + } + + ut_error; /* No free cell found */ + + return; +} + +/********************************************************************** +This function should be called when a thread starts to wait on +a wait array cell. In the debug version this function checks +if the wait for a semaphore will result in a deadlock, in which +case prints info and asserts. */ +UNIV_INTERN +void +sync_array_wait_event( +/*==================*/ + sync_array_t* arr, /* in: wait array */ + ulint index) /* in: index of the reserved cell */ +{ + sync_cell_t* cell; + os_event_t event; + + ut_a(arr); + + sync_array_enter(arr); + + cell = sync_array_get_nth_cell(arr, index); + + ut_a(cell->wait_object); + ut_a(!cell->waiting); + ut_ad(os_thread_get_curr_id() == cell->thread); + + event = sync_cell_get_event(cell); + cell->waiting = TRUE; + +#ifdef UNIV_SYNC_DEBUG + + /* We use simple enter to the mutex below, because if + we cannot acquire it at once, mutex_enter would call + recursively sync_array routines, leading to trouble. + rw_lock_debug_mutex freezes the debug lists. */ + + rw_lock_debug_mutex_enter(); + + if (TRUE == sync_array_detect_deadlock(arr, cell, cell, 0)) { + + fputs("########################################\n", stderr); + ut_error; + } + + rw_lock_debug_mutex_exit(); +#endif + sync_array_exit(arr); + + os_event_wait_low(event, cell->signal_count); + + sync_array_free_cell(arr, index); +} + +/********************************************************************** +Reports info of a wait array cell. */ +static +void +sync_array_cell_print( +/*==================*/ + FILE* file, /* in: file where to print */ + sync_cell_t* cell) /* in: sync cell */ +{ + mutex_t* mutex; + rw_lock_t* rwlock; + ulint type; + ulint writer; + + type = cell->request_type; + + fprintf(file, + "--Thread %lu has waited at %s line %lu" + " for %#.5g seconds the semaphore:\n", + (ulong) os_thread_pf(cell->thread), cell->file, + (ulong) cell->line, + difftime(time(NULL), cell->reservation_time)); + + if (type == SYNC_MUTEX) { + /* We use old_wait_mutex in case the cell has already + been freed meanwhile */ + mutex = cell->old_wait_mutex; + + fprintf(file, + "Mutex at %p created file %s line %lu, lock var %lu\n" +#ifdef UNIV_SYNC_DEBUG + "Last time reserved in file %s line %lu, " +#endif /* UNIV_SYNC_DEBUG */ + "waiters flag %lu\n", + (void*) mutex, mutex->cfile_name, (ulong) mutex->cline, + (ulong) mutex->lock_word, +#ifdef UNIV_SYNC_DEBUG + mutex->file_name, (ulong) mutex->line, +#endif /* UNIV_SYNC_DEBUG */ + (ulong) mutex->waiters); + + } else if (type == RW_LOCK_EX + || type == RW_LOCK_WAIT_EX + || type == RW_LOCK_SHARED) { + + fputs(type == RW_LOCK_EX ? "X-lock on" : "S-lock on", file); + + rwlock = cell->old_wait_rw_lock; + + fprintf(file, + " RW-latch at %p created in file %s line %lu\n", + (void*) rwlock, rwlock->cfile_name, + (ulong) rwlock->cline); + writer = rw_lock_get_writer(rwlock); + if (writer != RW_LOCK_NOT_LOCKED) { + fprintf(file, + "a writer (thread id %lu) has" + " reserved it in mode %s", + (ulong) os_thread_pf(rwlock->writer_thread), + writer == RW_LOCK_EX + ? " exclusive\n" + : " wait exclusive\n"); + } + + fprintf(file, + "number of readers %lu, waiters flag %lu, " + "lock_word: %lx\n" + "Last time read locked in file %s line %lu\n" + "Last time write locked in file %s line %lu\n", + (ulong) rw_lock_get_reader_count(rwlock), + (ulong) rwlock->waiters, + rwlock->lock_word, + rwlock->last_s_file_name, + (ulong) rwlock->last_s_line, + rwlock->last_x_file_name, + (ulong) rwlock->last_x_line); + } else { + ut_error; + } + + if (!cell->waiting) { + fputs("wait has ended\n", file); + } +} + +#ifdef UNIV_SYNC_DEBUG +/********************************************************************** +Looks for a cell with the given thread id. */ +static +sync_cell_t* +sync_array_find_thread( +/*===================*/ + /* out: pointer to cell or NULL + if not found */ + sync_array_t* arr, /* in: wait array */ + os_thread_id_t thread) /* in: thread id */ +{ + ulint i; + sync_cell_t* cell; + + for (i = 0; i < arr->n_cells; i++) { + + cell = sync_array_get_nth_cell(arr, i); + + if (cell->wait_object != NULL + && os_thread_eq(cell->thread, thread)) { + + return(cell); /* Found */ + } + } + + return(NULL); /* Not found */ +} + +/********************************************************************** +Recursion step for deadlock detection. */ +static +ibool +sync_array_deadlock_step( +/*=====================*/ + /* out: TRUE if deadlock detected */ + sync_array_t* arr, /* in: wait array; NOTE! the caller must + own the mutex to array */ + sync_cell_t* start, /* in: cell where recursive search + started */ + os_thread_id_t thread, /* in: thread to look at */ + ulint pass, /* in: pass value */ + ulint depth) /* in: recursion depth */ +{ + sync_cell_t* new; + ibool ret; + + depth++; + + if (pass != 0) { + /* If pass != 0, then we do not know which threads are + responsible of releasing the lock, and no deadlock can + be detected. */ + + return(FALSE); + } + + new = sync_array_find_thread(arr, thread); + + if (new == start) { + /* Stop running of other threads */ + + ut_dbg_stop_threads = TRUE; + + /* Deadlock */ + fputs("########################################\n" + "DEADLOCK of threads detected!\n", stderr); + + return(TRUE); + + } else if (new) { + ret = sync_array_detect_deadlock(arr, start, new, depth); + + if (ret) { + return(TRUE); + } + } + return(FALSE); +} + +/********************************************************************** +This function is called only in the debug version. Detects a deadlock +of one or more threads because of waits of semaphores. */ +static +ibool +sync_array_detect_deadlock( +/*=======================*/ + /* out: TRUE if deadlock detected */ + sync_array_t* arr, /* in: wait array; NOTE! the caller must + own the mutex to array */ + sync_cell_t* start, /* in: cell where recursive search started */ + sync_cell_t* cell, /* in: cell to search */ + ulint depth) /* in: recursion depth */ +{ + mutex_t* mutex; + rw_lock_t* lock; + os_thread_id_t thread; + ibool ret; + rw_lock_debug_t*debug; + + ut_a(arr); + ut_a(start); + ut_a(cell); + ut_ad(cell->wait_object); + ut_ad(os_thread_get_curr_id() == start->thread); + ut_ad(depth < 100); + + depth++; + + if (!cell->waiting) { + + return(FALSE); /* No deadlock here */ + } + + if (cell->request_type == SYNC_MUTEX) { + + mutex = cell->wait_object; + + if (mutex_get_lock_word(mutex) != 0) { + + thread = mutex->thread_id; + + /* Note that mutex->thread_id above may be + also OS_THREAD_ID_UNDEFINED, because the + thread which held the mutex maybe has not + yet updated the value, or it has already + released the mutex: in this case no deadlock + can occur, as the wait array cannot contain + a thread with ID_UNDEFINED value. */ + + ret = sync_array_deadlock_step(arr, start, thread, 0, + depth); + if (ret) { + fprintf(stderr, + "Mutex %p owned by thread %lu file %s line %lu\n", + mutex, (ulong) os_thread_pf(mutex->thread_id), + mutex->file_name, (ulong) mutex->line); + sync_array_cell_print(stderr, cell); + + return(TRUE); + } + } + + return(FALSE); /* No deadlock */ + + } else if (cell->request_type == RW_LOCK_EX + || cell->request_type == RW_LOCK_WAIT_EX) { + + lock = cell->wait_object; + + debug = UT_LIST_GET_FIRST(lock->debug_list); + + while (debug != NULL) { + + thread = debug->thread_id; + + if (((debug->lock_type == RW_LOCK_EX) + && !os_thread_eq(thread, cell->thread)) + || ((debug->lock_type == RW_LOCK_WAIT_EX) + && !os_thread_eq(thread, cell->thread)) + || (debug->lock_type == RW_LOCK_SHARED)) { + + /* The (wait) x-lock request can block + infinitely only if someone (can be also cell + thread) is holding s-lock, or someone + (cannot be cell thread) (wait) x-lock, and + he is blocked by start thread */ + + ret = sync_array_deadlock_step( + arr, start, thread, debug->pass, + depth); + if (ret) { +print: + fprintf(stderr, "rw-lock %p ", + (void*) lock); + sync_array_cell_print(stderr, cell); + rw_lock_debug_print(debug); + return(TRUE); + } + } + + debug = UT_LIST_GET_NEXT(list, debug); + } + + return(FALSE); + + } else if (cell->request_type == RW_LOCK_SHARED) { + + lock = cell->wait_object; + debug = UT_LIST_GET_FIRST(lock->debug_list); + + while (debug != NULL) { + + thread = debug->thread_id; + + if ((debug->lock_type == RW_LOCK_EX) + || (debug->lock_type == RW_LOCK_WAIT_EX)) { + + /* The s-lock request can block infinitely + only if someone (can also be cell thread) is + holding (wait) x-lock, and he is blocked by + start thread */ + + ret = sync_array_deadlock_step( + arr, start, thread, debug->pass, + depth); + if (ret) { + goto print; + } + } + + debug = UT_LIST_GET_NEXT(list, debug); + } + + return(FALSE); + + } else { + ut_error; + } + + return(TRUE); /* Execution never reaches this line: for compiler + fooling only */ +} +#endif /* UNIV_SYNC_DEBUG */ + +/********************************************************************** +Determines if we can wake up the thread waiting for a sempahore. */ +static +ibool +sync_arr_cell_can_wake_up( +/*======================*/ + sync_cell_t* cell) /* in: cell to search */ +{ + mutex_t* mutex; + rw_lock_t* lock; + + if (cell->request_type == SYNC_MUTEX) { + + mutex = cell->wait_object; + + if (mutex_get_lock_word(mutex) == 0) { + + return(TRUE); + } + + } else if (cell->request_type == RW_LOCK_EX) { + + lock = cell->wait_object; + + if (lock->lock_word > 0) { + /* Either unlocked or only read locked. */ + + return(TRUE); + } + + } else if (cell->request_type == RW_LOCK_WAIT_EX) { + + lock = cell->wait_object; + + /* lock_word == 0 means all readers have left */ + if (lock->lock_word == 0) { + + return(TRUE); + } + } else if (cell->request_type == RW_LOCK_SHARED) { + lock = cell->wait_object; + + /* lock_word > 0 means no writer or reserved writer */ + if (lock->lock_word > 0) { + + return(TRUE); + } + } + + return(FALSE); +} + +/********************************************************************** +Frees the cell. NOTE! sync_array_wait_event frees the cell +automatically! */ +UNIV_INTERN +void +sync_array_free_cell( +/*=================*/ + sync_array_t* arr, /* in: wait array */ + ulint index) /* in: index of the cell in array */ +{ + sync_cell_t* cell; + + sync_array_enter(arr); + + cell = sync_array_get_nth_cell(arr, index); + + ut_a(cell->wait_object != NULL); + + cell->waiting = FALSE; + cell->wait_object = NULL; + cell->signal_count = 0; + + ut_a(arr->n_reserved > 0); + arr->n_reserved--; + + sync_array_exit(arr); +} + +/************************************************************************** +Increments the signalled count. */ +UNIV_INTERN +void +sync_array_object_signalled( +/*========================*/ + sync_array_t* arr) /* in: wait array */ +{ +#ifdef HAVE_GCC_ATOMIC_BUILTINS + (void) os_atomic_increment(&arr->sg_count, 1); +#else + sync_array_enter(arr); + + arr->sg_count++; + + sync_array_exit(arr); +#endif +} + +/************************************************************************** +If the wakeup algorithm does not work perfectly at semaphore relases, +this function will do the waking (see the comment in mutex_exit). This +function should be called about every 1 second in the server. + +Note that there's a race condition between this thread and mutex_exit +changing the lock_word and calling signal_object, so sometimes this finds +threads to wake up even when nothing has gone wrong. */ +UNIV_INTERN +void +sync_arr_wake_threads_if_sema_free(void) +/*====================================*/ +{ + sync_array_t* arr = sync_primary_wait_array; + sync_cell_t* cell; + ulint count; + ulint i; + os_event_t event; + + sync_array_enter(arr); + + i = 0; + count = 0; + + while (count < arr->n_reserved) { + + cell = sync_array_get_nth_cell(arr, i); + i++; + + if (cell->wait_object == NULL) { + continue; + } + count++; + + if (sync_arr_cell_can_wake_up(cell)) { + + event = sync_cell_get_event(cell); + + os_event_set(event); + } + + } + + sync_array_exit(arr); +} + +/************************************************************************** +Prints warnings of long semaphore waits to stderr. */ +UNIV_INTERN +ibool +sync_array_print_long_waits(void) +/*=============================*/ + /* out: TRUE if fatal semaphore wait threshold + was exceeded */ +{ + sync_cell_t* cell; + ibool old_val; + ibool noticed = FALSE; + ulint i; + ulint fatal_timeout = srv_fatal_semaphore_wait_threshold; + ibool fatal = FALSE; + + for (i = 0; i < sync_primary_wait_array->n_cells; i++) { + + cell = sync_array_get_nth_cell(sync_primary_wait_array, i); + + if (cell->wait_object != NULL && cell->waiting + && difftime(time(NULL), cell->reservation_time) > 240) { + fputs("InnoDB: Warning: a long semaphore wait:\n", + stderr); + sync_array_cell_print(stderr, cell); + noticed = TRUE; + } + + if (cell->wait_object != NULL && cell->waiting + && difftime(time(NULL), cell->reservation_time) + > fatal_timeout) { + fatal = TRUE; + } + } + + if (noticed) { + fprintf(stderr, + "InnoDB: ###### Starts InnoDB Monitor" + " for 30 secs to print diagnostic info:\n"); + old_val = srv_print_innodb_monitor; + + /* If some crucial semaphore is reserved, then also the InnoDB + Monitor can hang, and we do not get diagnostics. Since in + many cases an InnoDB hang is caused by a pwrite() or a pread() + call hanging inside the operating system, let us print right + now the values of pending calls of these. */ + + fprintf(stderr, + "InnoDB: Pending preads %lu, pwrites %lu\n", + (ulong)os_file_n_pending_preads, + (ulong)os_file_n_pending_pwrites); + + srv_print_innodb_monitor = TRUE; + os_event_set(srv_lock_timeout_thread_event); + + os_thread_sleep(30000000); + + srv_print_innodb_monitor = old_val; + fprintf(stderr, + "InnoDB: ###### Diagnostic info printed" + " to the standard error stream\n"); + } + + return(fatal); +} + +/************************************************************************** +Prints info of the wait array. */ +static +void +sync_array_output_info( +/*===================*/ + FILE* file, /* in: file where to print */ + sync_array_t* arr) /* in: wait array; NOTE! caller must own the + mutex */ +{ + sync_cell_t* cell; + ulint count; + ulint i; + + fprintf(file, + "OS WAIT ARRAY INFO: reservation count %ld, signal count %ld\n", + (long) arr->res_count, (long) arr->sg_count); + i = 0; + count = 0; + + while (count < arr->n_reserved) { + + cell = sync_array_get_nth_cell(arr, i); + + if (cell->wait_object != NULL) { + count++; + sync_array_cell_print(file, cell); + } + + i++; + } +} + +/************************************************************************** +Prints info of the wait array. */ +UNIV_INTERN +void +sync_array_print_info( +/*==================*/ + FILE* file, /* in: file where to print */ + sync_array_t* arr) /* in: wait array */ +{ + sync_array_enter(arr); + + sync_array_output_info(file, arr); + + sync_array_exit(arr); +} === added file 'storage/xtradb/sync/sync0rw.c' --- a/storage/xtradb/sync/sync0rw.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/sync/sync0rw.c 2009-04-27 04:54:14 +0000 @@ -0,0 +1,1035 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. +Copyright (c) 2008, Google Inc. + +Portions of this file contain modifications contributed and copyrighted by +Google, Inc. Those modifications are gratefully acknowledged and are described +briefly in the InnoDB documentation. The contributions by Google are +incorporated with their permission, and subject to the conditions contained in +the file COPYING.Google. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +The read-write lock (for thread synchronization) + +Created 9/11/1995 Heikki Tuuri +*******************************************************/ + +#include "sync0rw.h" +#ifdef UNIV_NONINL +#include "sync0rw.ic" +#endif + +#include "os0thread.h" +#include "mem0mem.h" +#include "srv0srv.h" + +/* + IMPLEMENTATION OF THE RW_LOCK + ============================= +The status of a rw_lock is held in lock_word. The initial value of lock_word is +X_LOCK_DECR. lock_word is decremented by 1 for each s-lock and by X_LOCK_DECR +for each x-lock. This describes the lock state for each value of lock_word: + +lock_word == X_LOCK_DECR: Unlocked. +0 < lock_word < X_LOCK_DECR: Read locked, no waiting writers. + (X_LOCK_DECR - lock_word) is the + number of readers that hold the lock. +lock_word == 0: Write locked +-X_LOCK_DECR < lock_word < 0: Read locked, with a waiting writer. + (-lock_word) is the number of readers + that hold the lock. +lock_word <= -X_LOCK_DECR: Recursively write locked. lock_word has been + decremented by X_LOCK_DECR once for each lock, + so the number of locks is: + ((-lock_word) / X_LOCK_DECR) + 1 +When lock_word <= -X_LOCK_DECR, we also know that lock_word % X_LOCK_DECR == 0: +other values of lock_word are invalid. + +The lock_word is always read and updated atomically and consistently, so that +it always represents the state of the lock, and the state of the lock changes +with a single atomic operation. This lock_word holds all of the information +that a thread needs in order to determine if it is eligible to gain the lock +or if it must spin or sleep. The one exception to this is that writer_thread +must be verified before recursive write locks: to solve this scenario, we make +writer_thread readable by all threads, but only writeable by the x-lock holder. + +The other members of the lock obey the following rules to remain consistent: + +recursive: This and the writer_thread field together control the + behaviour of recursive x-locking. + lock->recursive must be FALSE in following states: + 1) The writer_thread contains garbage i.e.: the + lock has just been initialized. + 2) The lock is not x-held and there is no + x-waiter waiting on WAIT_EX event. + 3) The lock is x-held or there is an x-waiter + waiting on WAIT_EX event but the 'pass' value + is non-zero. + lock->recursive is TRUE iff: + 1) The lock is x-held or there is an x-waiter + waiting on WAIT_EX event and the 'pass' value + is zero. + This flag must be set after the writer_thread field + has been updated with a memory ordering barrier. + It is unset before the lock_word has been incremented. +writer_thread: Is used only in recursive x-locking. Can only be safely + read iff lock->recursive flag is TRUE. + This field is uninitialized at lock creation time and + is updated atomically when x-lock is acquired or when + move_ownership is called. A thread is only allowed to + set the value of this field to it's thread_id i.e.: a + thread cannot set writer_thread to some other thread's + id. +waiters: May be set to 1 anytime, but to avoid unnecessary wake-up + signals, it should only be set to 1 when there are threads + waiting on event. Must be 1 when a writer starts waiting to + ensure the current x-locking thread sends a wake-up signal + during unlock. May only be reset to 0 immediately before a + a wake-up signal is sent to event. On most platforms, a + memory barrier is required after waiters is set, and before + verifying lock_word is still held, to ensure some unlocker + really does see the flags new value. +event: Threads wait on event for read or writer lock when another + thread has an x-lock or an x-lock reservation (wait_ex). A + thread may only wait on event after performing the following + actions in order: + (1) Record the counter value of event (with os_event_reset). + (2) Set waiters to 1. + (3) Verify lock_word <= 0. + (1) must come before (2) to ensure signal is not missed. + (2) must come before (3) to ensure a signal is sent. + These restrictions force the above ordering. + Immediately before sending the wake-up signal, we should: + (1) Verify lock_word == X_LOCK_DECR (unlocked) + (2) Reset waiters to 0. +wait_ex_event: A thread may only wait on the wait_ex_event after it has + performed the following actions in order: + (1) Decrement lock_word by X_LOCK_DECR. + (2) Record counter value of wait_ex_event (os_event_reset, + called from sync_array_reserve_cell). + (3) Verify that lock_word < 0. + (1) must come first to ensures no other threads become reader + or next writer, and notifies unlocker that signal must be sent. + (2) must come before (3) to ensure the signal is not missed. + These restrictions force the above ordering. + Immediately before sending the wake-up signal, we should: + Verify lock_word == 0 (waiting thread holds x_lock) +*/ + + +/* number of spin waits on rw-latches, +resulted during shared (read) locks */ +UNIV_INTERN ib_int64_t rw_s_spin_wait_count = 0; +UNIV_INTERN ib_int64_t rw_s_spin_round_count = 0; + +/* number of OS waits on rw-latches, +resulted during shared (read) locks */ +UNIV_INTERN ib_int64_t rw_s_os_wait_count = 0; + +/* number of unlocks (that unlock shared locks), +set only when UNIV_SYNC_PERF_STAT is defined */ +UNIV_INTERN ib_int64_t rw_s_exit_count = 0; + +/* number of spin waits on rw-latches, +resulted during exclusive (write) locks */ +UNIV_INTERN ib_int64_t rw_x_spin_wait_count = 0; +UNIV_INTERN ib_int64_t rw_x_spin_round_count = 0; + +/* number of OS waits on rw-latches, +resulted during exclusive (write) locks */ +UNIV_INTERN ib_int64_t rw_x_os_wait_count = 0; + +/* number of unlocks (that unlock exclusive locks), +set only when UNIV_SYNC_PERF_STAT is defined */ +UNIV_INTERN ib_int64_t rw_x_exit_count = 0; + +/* The global list of rw-locks */ +UNIV_INTERN rw_lock_list_t rw_lock_list; +UNIV_INTERN mutex_t rw_lock_list_mutex; + +#ifdef UNIV_SYNC_DEBUG +/* The global mutex which protects debug info lists of all rw-locks. +To modify the debug info list of an rw-lock, this mutex has to be +acquired in addition to the mutex protecting the lock. */ + +UNIV_INTERN mutex_t rw_lock_debug_mutex; +/* If deadlock detection does not get immediately the mutex, +it may wait for this event */ +UNIV_INTERN os_event_t rw_lock_debug_event; +/* This is set to TRUE, if there may be waiters for the event */ +UNIV_INTERN ibool rw_lock_debug_waiters; + +/********************************************************************** +Creates a debug info struct. */ +static +rw_lock_debug_t* +rw_lock_debug_create(void); +/*======================*/ +/********************************************************************** +Frees a debug info struct. */ +static +void +rw_lock_debug_free( +/*===============*/ + rw_lock_debug_t* info); + +/********************************************************************** +Creates a debug info struct. */ +static +rw_lock_debug_t* +rw_lock_debug_create(void) +/*======================*/ +{ + return((rw_lock_debug_t*) mem_alloc(sizeof(rw_lock_debug_t))); +} + +/********************************************************************** +Frees a debug info struct. */ +static +void +rw_lock_debug_free( +/*===============*/ + rw_lock_debug_t* info) +{ + mem_free(info); +} +#endif /* UNIV_SYNC_DEBUG */ + +/********************************************************************** +Creates, or rather, initializes an rw-lock object in a specified memory +location (which must be appropriately aligned). The rw-lock is initialized +to the non-locked state. Explicit freeing of the rw-lock with rw_lock_free +is necessary only if the memory block containing it is freed. */ +UNIV_INTERN +void +rw_lock_create_func( +/*================*/ + rw_lock_t* lock, /* in: pointer to memory */ +#ifdef UNIV_DEBUG +# ifdef UNIV_SYNC_DEBUG + ulint level, /* in: level */ +# endif /* UNIV_SYNC_DEBUG */ + const char* cmutex_name, /* in: mutex name */ +#endif /* UNIV_DEBUG */ + const char* cfile_name, /* in: file name where created */ + ulint cline) /* in: file line where created */ +{ + /* If this is the very first time a synchronization object is + created, then the following call initializes the sync system. */ + +#ifndef INNODB_RW_LOCKS_USE_ATOMICS + mutex_create(rw_lock_get_mutex(lock), SYNC_NO_ORDER_CHECK); + + lock->mutex.cfile_name = cfile_name; + lock->mutex.cline = cline; + +# if defined UNIV_DEBUG && !defined UNIV_HOTBACKUP + lock->mutex.cmutex_name = cmutex_name; + lock->mutex.mutex_type = 1; +# endif /* UNIV_DEBUG && !UNIV_HOTBACKUP */ + +#else /* INNODB_RW_LOCKS_USE_ATOMICS */ +# ifdef UNIV_DEBUG + UT_NOT_USED(cmutex_name); +# endif +#endif /* INNODB_RW_LOCKS_USE_ATOMICS */ + + lock->lock_word = X_LOCK_DECR; + lock->waiters = 0; + + /* We set this value to signify that lock->writer_thread + contains garbage at initialization and cannot be used for + recursive x-locking. */ + lock->recursive = FALSE; + +#ifdef UNIV_SYNC_DEBUG + UT_LIST_INIT(lock->debug_list); + + lock->level = level; +#endif /* UNIV_SYNC_DEBUG */ + + lock->magic_n = RW_LOCK_MAGIC_N; + + lock->cfile_name = cfile_name; + lock->cline = (unsigned int) cline; + + lock->count_os_wait = 0; + lock->last_s_file_name = "not yet reserved"; + lock->last_x_file_name = "not yet reserved"; + lock->last_s_line = 0; + lock->last_x_line = 0; + lock->event = os_event_create(NULL); + lock->wait_ex_event = os_event_create(NULL); + + mutex_enter(&rw_lock_list_mutex); + + if (UT_LIST_GET_LEN(rw_lock_list) > 0) { + ut_a(UT_LIST_GET_FIRST(rw_lock_list)->magic_n + == RW_LOCK_MAGIC_N); + } + + UT_LIST_ADD_FIRST(list, rw_lock_list, lock); + + mutex_exit(&rw_lock_list_mutex); +} + +/********************************************************************** +Calling this function is obligatory only if the memory buffer containing +the rw-lock is freed. Removes an rw-lock object from the global list. The +rw-lock is checked to be in the non-locked state. */ +UNIV_INTERN +void +rw_lock_free( +/*=========*/ + rw_lock_t* lock) /* in: rw-lock */ +{ + ut_ad(rw_lock_validate(lock)); + ut_a(lock->lock_word == X_LOCK_DECR); + + lock->magic_n = 0; + +#ifndef INNODB_RW_LOCKS_USE_ATOMICS + mutex_free(rw_lock_get_mutex(lock)); +#endif /* INNODB_RW_LOCKS_USE_ATOMICS */ + + mutex_enter(&rw_lock_list_mutex); + os_event_free(lock->event); + + os_event_free(lock->wait_ex_event); + + if (UT_LIST_GET_PREV(list, lock)) { + ut_a(UT_LIST_GET_PREV(list, lock)->magic_n == RW_LOCK_MAGIC_N); + } + if (UT_LIST_GET_NEXT(list, lock)) { + ut_a(UT_LIST_GET_NEXT(list, lock)->magic_n == RW_LOCK_MAGIC_N); + } + + UT_LIST_REMOVE(list, rw_lock_list, lock); + + mutex_exit(&rw_lock_list_mutex); +} + +#ifdef UNIV_DEBUG +/********************************************************************** +Checks that the rw-lock has been initialized and that there are no +simultaneous shared and exclusive locks. */ +UNIV_INTERN +ibool +rw_lock_validate( +/*=============*/ + rw_lock_t* lock) +{ + ut_a(lock); + + ulint waiters = rw_lock_get_waiters(lock); + lint lock_word = lock->lock_word; + + ut_a(lock->magic_n == RW_LOCK_MAGIC_N); + ut_a(waiters == 0 || waiters == 1); + ut_a(lock_word > -X_LOCK_DECR ||(-lock_word) % X_LOCK_DECR == 0); + + return(TRUE); +} +#endif /* UNIV_DEBUG */ + +/********************************************************************** +Lock an rw-lock in shared mode for the current thread. If the rw-lock is +locked in exclusive mode, or there is an exclusive lock request waiting, +the function spins a preset time (controlled by SYNC_SPIN_ROUNDS), waiting +for the lock, before suspending the thread. */ +UNIV_INTERN +void +rw_lock_s_lock_spin( +/*================*/ + rw_lock_t* lock, /* in: pointer to rw-lock */ + ulint pass, /* in: pass value; != 0, if the lock + will be passed to another thread to unlock */ + const char* file_name, /* in: file name where lock requested */ + ulint line) /* in: line where requested */ +{ + ulint index; /* index of the reserved wait cell */ + ulint i = 0; /* spin round count */ + + ut_ad(rw_lock_validate(lock)); + + rw_s_spin_wait_count++; /* Count calls to this function */ +lock_loop: + + /* Spin waiting for the writer field to become free */ + while (i < SYNC_SPIN_ROUNDS && lock->lock_word <= 0) { + if (srv_spin_wait_delay) { + ut_delay(ut_rnd_interval(0, srv_spin_wait_delay)); + } + + i++; + } + + if (i == SYNC_SPIN_ROUNDS) { + os_thread_yield(); + } + + if (srv_print_latch_waits) { + fprintf(stderr, + "Thread %lu spin wait rw-s-lock at %p" + " cfile %s cline %lu rnds %lu\n", + (ulong) os_thread_pf(os_thread_get_curr_id()), + (void*) lock, + lock->cfile_name, (ulong) lock->cline, (ulong) i); + } + + /* We try once again to obtain the lock */ + if (TRUE == rw_lock_s_lock_low(lock, pass, file_name, line)) { + rw_s_spin_round_count += i; + + return; /* Success */ + } else { + + if (i < SYNC_SPIN_ROUNDS) { + goto lock_loop; + } + + rw_s_spin_round_count += i; + + sync_array_reserve_cell(sync_primary_wait_array, + lock, RW_LOCK_SHARED, + file_name, line, + &index); + + /* Set waiters before checking lock_word to ensure wake-up + signal is sent. This may lead to some unnecessary signals. */ + rw_lock_set_waiter_flag(lock); + + if (TRUE == rw_lock_s_lock_low(lock, pass, file_name, line)) { + sync_array_free_cell(sync_primary_wait_array, index); + return; /* Success */ + } + + if (srv_print_latch_waits) { + fprintf(stderr, + "Thread %lu OS wait rw-s-lock at %p" + " cfile %s cline %lu\n", + os_thread_pf(os_thread_get_curr_id()), + (void*) lock, lock->cfile_name, + (ulong) lock->cline); + } + + /* these stats may not be accurate */ + lock->count_os_wait++; + rw_s_os_wait_count++; + + sync_array_wait_event(sync_primary_wait_array, index); + + i = 0; + goto lock_loop; + } +} + +/********************************************************************** +This function is used in the insert buffer to move the ownership of an +x-latch on a buffer frame to the current thread. The x-latch was set by +the buffer read operation and it protected the buffer frame while the +read was done. The ownership is moved because we want that the current +thread is able to acquire a second x-latch which is stored in an mtr. +This, in turn, is needed to pass the debug checks of index page +operations. */ +UNIV_INTERN +void +rw_lock_x_lock_move_ownership( +/*==========================*/ + rw_lock_t* lock) /* in: lock which was x-locked in the + buffer read */ +{ + ut_ad(rw_lock_is_locked(lock, RW_LOCK_EX)); + + rw_lock_set_writer_id_and_recursion_flag(lock, TRUE); +} + +/********************************************************************** +Function for the next writer to call. Waits for readers to exit. +The caller must have already decremented lock_word by X_LOCK_DECR.*/ +UNIV_INLINE +void +rw_lock_x_lock_wait( +/*================*/ + rw_lock_t* lock, /* in: pointer to rw-lock */ +#ifdef UNIV_SYNC_DEBUG + ulint pass, /* in: pass value; != 0, if the lock will + be passed to another thread to unlock */ +#endif + const char* file_name,/* in: file name where lock requested */ + ulint line) /* in: line where requested */ +{ + ulint index; + ulint i = 0; + + ut_ad(lock->lock_word <= 0); + + while (lock->lock_word < 0) { + if (srv_spin_wait_delay) { + ut_delay(ut_rnd_interval(0, srv_spin_wait_delay)); + } + if(i < SYNC_SPIN_ROUNDS) { + i++; + continue; + } + + /* If there is still a reader, then go to sleep.*/ + rw_x_spin_round_count += i; + i = 0; + sync_array_reserve_cell(sync_primary_wait_array, + lock, + RW_LOCK_WAIT_EX, + file_name, line, + &index); + /* Check lock_word to ensure wake-up isn't missed.*/ + if(lock->lock_word < 0) { + + /* these stats may not be accurate */ + lock->count_os_wait++; + rw_x_os_wait_count++; + + /* Add debug info as it is needed to detect possible + deadlock. We must add info for WAIT_EX thread for + deadlock detection to work properly. */ +#ifdef UNIV_SYNC_DEBUG + rw_lock_add_debug_info(lock, pass, RW_LOCK_WAIT_EX, + file_name, line); +#endif + + sync_array_wait_event(sync_primary_wait_array, + index); +#ifdef UNIV_SYNC_DEBUG + rw_lock_remove_debug_info(lock, pass, + RW_LOCK_WAIT_EX); +#endif + /* It is possible to wake when lock_word < 0. + We must pass the while-loop check to proceed.*/ + } else { + sync_array_free_cell(sync_primary_wait_array, + index); + } + } + rw_x_spin_round_count += i; +} + +/********************************************************************** +Low-level function for acquiring an exclusive lock. */ +UNIV_INLINE +ibool +rw_lock_x_lock_low( +/*===============*/ + /* out: RW_LOCK_NOT_LOCKED if did + not succeed, RW_LOCK_EX if success. */ + rw_lock_t* lock, /* in: pointer to rw-lock */ + ulint pass, /* in: pass value; != 0, if the lock will + be passed to another thread to unlock */ + const char* file_name,/* in: file name where lock requested */ + ulint line) /* in: line where requested */ +{ + os_thread_id_t curr_thread = os_thread_get_curr_id(); + + if (rw_lock_lock_word_decr(lock, X_LOCK_DECR)) { + + /* lock->recursive also tells us if the writer_thread + field is stale or active. As we are going to write + our own thread id in that field it must be that the + current writer_thread value is not active. */ + ut_a(!lock->recursive); + + /* Decrement occurred: we are writer or next-writer. */ + rw_lock_set_writer_id_and_recursion_flag(lock, + pass ? FALSE : TRUE); + + rw_lock_x_lock_wait(lock, +#ifdef UNIV_SYNC_DEBUG + pass, +#endif + file_name, line); + + } else { + /* Decrement failed: relock or failed lock */ + if (!pass && lock->recursive + && os_thread_eq(lock->writer_thread, curr_thread)) { + /* Relock */ + lock->lock_word -= X_LOCK_DECR; + } else { + /* Another thread locked before us */ + return(FALSE); + } + } +#ifdef UNIV_SYNC_DEBUG + rw_lock_add_debug_info(lock, pass, RW_LOCK_EX, + file_name, line); +#endif + lock->last_x_file_name = file_name; + lock->last_x_line = (unsigned int) line; + + return(TRUE); +} + +/********************************************************************** +NOTE! Use the corresponding macro, not directly this function! Lock an +rw-lock in exclusive mode for the current thread. If the rw-lock is locked +in shared or exclusive mode, or there is an exclusive lock request waiting, +the function spins a preset time (controlled by SYNC_SPIN_ROUNDS), waiting +for the lock before suspending the thread. If the same thread has an x-lock +on the rw-lock, locking succeed, with the following exception: if pass != 0, +only a single x-lock may be taken on the lock. NOTE: If the same thread has +an s-lock, locking does not succeed! */ +UNIV_INTERN +void +rw_lock_x_lock_func( +/*================*/ + rw_lock_t* lock, /* in: pointer to rw-lock */ + ulint pass, /* in: pass value; != 0, if the lock will + be passed to another thread to unlock */ + const char* file_name,/* in: file name where lock requested */ + ulint line) /* in: line where requested */ +{ + ulint index; /* index of the reserved wait cell */ + ulint i; /* spin round count */ + ibool spinning = FALSE; + + ut_ad(rw_lock_validate(lock)); + + i = 0; + +lock_loop: + + if (rw_lock_x_lock_low(lock, pass, file_name, line)) { + rw_x_spin_round_count += i; + + return; /* Locking succeeded */ + + } else { + + if (!spinning) { + spinning = TRUE; + rw_x_spin_wait_count++; + } + + /* Spin waiting for the lock_word to become free */ + while (i < SYNC_SPIN_ROUNDS + && lock->lock_word <= 0) { + if (srv_spin_wait_delay) { + ut_delay(ut_rnd_interval(0, + srv_spin_wait_delay)); + } + + i++; + } + if (i == SYNC_SPIN_ROUNDS) { + os_thread_yield(); + } else { + goto lock_loop; + } + } + + rw_x_spin_round_count += i; + + if (srv_print_latch_waits) { + fprintf(stderr, + "Thread %lu spin wait rw-x-lock at %p" + " cfile %s cline %lu rnds %lu\n", + os_thread_pf(os_thread_get_curr_id()), (void*) lock, + lock->cfile_name, (ulong) lock->cline, (ulong) i); + } + + sync_array_reserve_cell(sync_primary_wait_array, + lock, + RW_LOCK_EX, + file_name, line, + &index); + + /* Waiters must be set before checking lock_word, to ensure signal + is sent. This could lead to a few unnecessary wake-up signals. */ + rw_lock_set_waiter_flag(lock); + + if (rw_lock_x_lock_low(lock, pass, file_name, line)) { + sync_array_free_cell(sync_primary_wait_array, index); + return; /* Locking succeeded */ + } + + if (srv_print_latch_waits) { + fprintf(stderr, + "Thread %lu OS wait for rw-x-lock at %p" + " cfile %s cline %lu\n", + os_thread_pf(os_thread_get_curr_id()), (void*) lock, + lock->cfile_name, (ulong) lock->cline); + } + + /* these stats may not be accurate */ + lock->count_os_wait++; + rw_x_os_wait_count++; + + sync_array_wait_event(sync_primary_wait_array, index); + + i = 0; + goto lock_loop; +} + +#ifdef UNIV_SYNC_DEBUG +/********************************************************************** +Acquires the debug mutex. We cannot use the mutex defined in sync0sync, +because the debug mutex is also acquired in sync0arr while holding the OS +mutex protecting the sync array, and the ordinary mutex_enter might +recursively call routines in sync0arr, leading to a deadlock on the OS +mutex. */ +UNIV_INTERN +void +rw_lock_debug_mutex_enter(void) +/*==========================*/ +{ +loop: + if (0 == mutex_enter_nowait(&rw_lock_debug_mutex)) { + return; + } + + os_event_reset(rw_lock_debug_event); + + rw_lock_debug_waiters = TRUE; + + if (0 == mutex_enter_nowait(&rw_lock_debug_mutex)) { + return; + } + + os_event_wait(rw_lock_debug_event); + + goto loop; +} + +/********************************************************************** +Releases the debug mutex. */ +UNIV_INTERN +void +rw_lock_debug_mutex_exit(void) +/*==========================*/ +{ + mutex_exit(&rw_lock_debug_mutex); + + if (rw_lock_debug_waiters) { + rw_lock_debug_waiters = FALSE; + os_event_set(rw_lock_debug_event); + } +} + +/********************************************************************** +Inserts the debug information for an rw-lock. */ +UNIV_INTERN +void +rw_lock_add_debug_info( +/*===================*/ + rw_lock_t* lock, /* in: rw-lock */ + ulint pass, /* in: pass value */ + ulint lock_type, /* in: lock type */ + const char* file_name, /* in: file where requested */ + ulint line) /* in: line where requested */ +{ + rw_lock_debug_t* info; + + ut_ad(lock); + ut_ad(file_name); + + info = rw_lock_debug_create(); + + rw_lock_debug_mutex_enter(); + + info->file_name = file_name; + info->line = line; + info->lock_type = lock_type; + info->thread_id = os_thread_get_curr_id(); + info->pass = pass; + + UT_LIST_ADD_FIRST(list, lock->debug_list, info); + + rw_lock_debug_mutex_exit(); + + if ((pass == 0) && (lock_type != RW_LOCK_WAIT_EX)) { + sync_thread_add_level(lock, lock->level); + } +} + +/********************************************************************** +Removes a debug information struct for an rw-lock. */ +UNIV_INTERN +void +rw_lock_remove_debug_info( +/*======================*/ + rw_lock_t* lock, /* in: rw-lock */ + ulint pass, /* in: pass value */ + ulint lock_type) /* in: lock type */ +{ + rw_lock_debug_t* info; + + ut_ad(lock); + + if ((pass == 0) && (lock_type != RW_LOCK_WAIT_EX)) { + sync_thread_reset_level(lock); + } + + rw_lock_debug_mutex_enter(); + + info = UT_LIST_GET_FIRST(lock->debug_list); + + while (info != NULL) { + if ((pass == info->pass) + && ((pass != 0) + || os_thread_eq(info->thread_id, + os_thread_get_curr_id())) + && (info->lock_type == lock_type)) { + + /* Found! */ + UT_LIST_REMOVE(list, lock->debug_list, info); + rw_lock_debug_mutex_exit(); + + rw_lock_debug_free(info); + + return; + } + + info = UT_LIST_GET_NEXT(list, info); + } + + ut_error; +} +#endif /* UNIV_SYNC_DEBUG */ + +#ifdef UNIV_SYNC_DEBUG +/********************************************************************** +Checks if the thread has locked the rw-lock in the specified mode, with +the pass value == 0. */ +UNIV_INTERN +ibool +rw_lock_own( +/*========*/ + /* out: TRUE if locked */ + rw_lock_t* lock, /* in: rw-lock */ + ulint lock_type) /* in: lock type: RW_LOCK_SHARED, + RW_LOCK_EX */ +{ + rw_lock_debug_t* info; + + ut_ad(lock); + ut_ad(rw_lock_validate(lock)); + + rw_lock_debug_mutex_enter(); + + info = UT_LIST_GET_FIRST(lock->debug_list); + + while (info != NULL) { + + if (os_thread_eq(info->thread_id, os_thread_get_curr_id()) + && (info->pass == 0) + && (info->lock_type == lock_type)) { + + rw_lock_debug_mutex_exit(); + /* Found! */ + + return(TRUE); + } + + info = UT_LIST_GET_NEXT(list, info); + } + rw_lock_debug_mutex_exit(); + + return(FALSE); +} +#endif /* UNIV_SYNC_DEBUG */ + +/********************************************************************** +Checks if somebody has locked the rw-lock in the specified mode. */ +UNIV_INTERN +ibool +rw_lock_is_locked( +/*==============*/ + /* out: TRUE if locked */ + rw_lock_t* lock, /* in: rw-lock */ + ulint lock_type) /* in: lock type: RW_LOCK_SHARED, + RW_LOCK_EX */ +{ + ibool ret = FALSE; + + ut_ad(lock); + ut_ad(rw_lock_validate(lock)); + + if (lock_type == RW_LOCK_SHARED) { + if (rw_lock_get_reader_count(lock) > 0) { + ret = TRUE; + } + } else if (lock_type == RW_LOCK_EX) { + if (rw_lock_get_writer(lock) == RW_LOCK_EX) { + ret = TRUE; + } + } else { + ut_error; + } + + return(ret); +} + +#ifdef UNIV_SYNC_DEBUG +/******************************************************************* +Prints debug info of currently locked rw-locks. */ +UNIV_INTERN +void +rw_lock_list_print_info( +/*====================*/ + FILE* file) /* in: file where to print */ +{ + rw_lock_t* lock; + ulint count = 0; + rw_lock_debug_t* info; + + mutex_enter(&rw_lock_list_mutex); + + fputs("-------------\n" + "RW-LATCH INFO\n" + "-------------\n", file); + + lock = UT_LIST_GET_FIRST(rw_lock_list); + + while (lock != NULL) { + + count++; + +#ifndef INNODB_RW_LOCKS_USE_ATOMICS + mutex_enter(&(lock->mutex)); +#endif + if (lock->lock_word != X_LOCK_DECR) { + + fprintf(file, "RW-LOCK: %p ", (void*) lock); + + if (rw_lock_get_waiters(lock)) { + fputs(" Waiters for the lock exist\n", file); + } else { + putc('\n', file); + } + + info = UT_LIST_GET_FIRST(lock->debug_list); + while (info != NULL) { + rw_lock_debug_print(info); + info = UT_LIST_GET_NEXT(list, info); + } + } +#ifndef INNODB_RW_LOCKS_USE_ATOMICS + mutex_exit(&(lock->mutex)); +#endif + + lock = UT_LIST_GET_NEXT(list, lock); + } + + fprintf(file, "Total number of rw-locks %ld\n", count); + mutex_exit(&rw_lock_list_mutex); +} + +/******************************************************************* +Prints debug info of an rw-lock. */ +UNIV_INTERN +void +rw_lock_print( +/*==========*/ + rw_lock_t* lock) /* in: rw-lock */ +{ + rw_lock_debug_t* info; + + fprintf(stderr, + "-------------\n" + "RW-LATCH INFO\n" + "RW-LATCH: %p ", (void*) lock); + +#ifndef INNODB_RW_LOCKS_USE_ATOMICS + mutex_enter(&(lock->mutex)); +#endif + if (lock->lock_word != X_LOCK_DECR) { + + if (rw_lock_get_waiters(lock)) { + fputs(" Waiters for the lock exist\n", stderr); + } else { + putc('\n', stderr); + } + + info = UT_LIST_GET_FIRST(lock->debug_list); + while (info != NULL) { + rw_lock_debug_print(info); + info = UT_LIST_GET_NEXT(list, info); + } + } +#ifndef INNODB_RW_LOCKS_USE_ATOMICS + mutex_exit(&(lock->mutex)); +#endif +} + +/************************************************************************* +Prints info of a debug struct. */ +UNIV_INTERN +void +rw_lock_debug_print( +/*================*/ + rw_lock_debug_t* info) /* in: debug struct */ +{ + ulint rwt; + + rwt = info->lock_type; + + fprintf(stderr, "Locked: thread %ld file %s line %ld ", + (ulong) os_thread_pf(info->thread_id), info->file_name, + (ulong) info->line); + if (rwt == RW_LOCK_SHARED) { + fputs("S-LOCK", stderr); + } else if (rwt == RW_LOCK_EX) { + fputs("X-LOCK", stderr); + } else if (rwt == RW_LOCK_WAIT_EX) { + fputs("WAIT X-LOCK", stderr); + } else { + ut_error; + } + if (info->pass != 0) { + fprintf(stderr, " pass value %lu", (ulong) info->pass); + } + putc('\n', stderr); +} + +/******************************************************************* +Returns the number of currently locked rw-locks. Works only in the debug +version. */ +UNIV_INTERN +ulint +rw_lock_n_locked(void) +/*==================*/ +{ + rw_lock_t* lock; + ulint count = 0; + + mutex_enter(&rw_lock_list_mutex); + + lock = UT_LIST_GET_FIRST(rw_lock_list); + + while (lock != NULL) { + + if (lock->lock_word != X_LOCK_DECR) { + count++; + } + + lock = UT_LIST_GET_NEXT(list, lock); + } + + mutex_exit(&rw_lock_list_mutex); + + return(count); +} +#endif /* UNIV_SYNC_DEBUG */ === added file 'storage/xtradb/sync/sync0sync.c' --- a/storage/xtradb/sync/sync0sync.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/sync/sync0sync.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,1411 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. +Copyright (c) 2008, Google Inc. + +Portions of this file contain modifications contributed and copyrighted by +Google, Inc. Those modifications are gratefully acknowledged and are described +briefly in the InnoDB documentation. The contributions by Google are +incorporated with their permission, and subject to the conditions contained in +the file COPYING.Google. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Mutex, the basic synchronization primitive + +Created 9/5/1995 Heikki Tuuri +*******************************************************/ + +#include "sync0sync.h" +#ifdef UNIV_NONINL +#include "sync0sync.ic" +#endif + +#include "sync0rw.h" +#include "buf0buf.h" +#include "srv0srv.h" +#include "buf0types.h" + +/* + REASONS FOR IMPLEMENTING THE SPIN LOCK MUTEX + ============================================ + +Semaphore operations in operating systems are slow: Solaris on a 1993 Sparc +takes 3 microseconds (us) for a lock-unlock pair and Windows NT on a 1995 +Pentium takes 20 microseconds for a lock-unlock pair. Therefore, we have to +implement our own efficient spin lock mutex. Future operating systems may +provide efficient spin locks, but we cannot count on that. + +Another reason for implementing a spin lock is that on multiprocessor systems +it can be more efficient for a processor to run a loop waiting for the +semaphore to be released than to switch to a different thread. A thread switch +takes 25 us on both platforms mentioned above. See Gray and Reuter's book +Transaction processing for background. + +How long should the spin loop last before suspending the thread? On a +uniprocessor, spinning does not help at all, because if the thread owning the +mutex is not executing, it cannot be released. Spinning actually wastes +resources. + +On a multiprocessor, we do not know if the thread owning the mutex is +executing or not. Thus it would make sense to spin as long as the operation +guarded by the mutex would typically last assuming that the thread is +executing. If the mutex is not released by that time, we may assume that the +thread owning the mutex is not executing and suspend the waiting thread. + +A typical operation (where no i/o involved) guarded by a mutex or a read-write +lock may last 1 - 20 us on the current Pentium platform. The longest +operations are the binary searches on an index node. + +We conclude that the best choice is to set the spin time at 20 us. Then the +system should work well on a multiprocessor. On a uniprocessor we have to +make sure that thread swithches due to mutex collisions are not frequent, +i.e., they do not happen every 100 us or so, because that wastes too much +resources. If the thread switches are not frequent, the 20 us wasted in spin +loop is not too much. + +Empirical studies on the effect of spin time should be done for different +platforms. + + + IMPLEMENTATION OF THE MUTEX + =========================== + +For background, see Curt Schimmel's book on Unix implementation on modern +architectures. The key points in the implementation are atomicity and +serialization of memory accesses. The test-and-set instruction (XCHG in +Pentium) must be atomic. As new processors may have weak memory models, also +serialization of memory references may be necessary. The successor of Pentium, +P6, has at least one mode where the memory model is weak. As far as we know, +in Pentium all memory accesses are serialized in the program order and we do +not have to worry about the memory model. On other processors there are +special machine instructions called a fence, memory barrier, or storage +barrier (STBAR in Sparc), which can be used to serialize the memory accesses +to happen in program order relative to the fence instruction. + +Leslie Lamport has devised a "bakery algorithm" to implement a mutex without +the atomic test-and-set, but his algorithm should be modified for weak memory +models. We do not use Lamport's algorithm, because we guess it is slower than +the atomic test-and-set. + +Our mutex implementation works as follows: After that we perform the atomic +test-and-set instruction on the memory word. If the test returns zero, we +know we got the lock first. If the test returns not zero, some other thread +was quicker and got the lock: then we spin in a loop reading the memory word, +waiting it to become zero. It is wise to just read the word in the loop, not +perform numerous test-and-set instructions, because they generate memory +traffic between the cache and the main memory. The read loop can just access +the cache, saving bus bandwidth. + +If we cannot acquire the mutex lock in the specified time, we reserve a cell +in the wait array, set the waiters byte in the mutex to 1. To avoid a race +condition, after setting the waiters byte and before suspending the waiting +thread, we still have to check that the mutex is reserved, because it may +have happened that the thread which was holding the mutex has just released +it and did not see the waiters byte set to 1, a case which would lead the +other thread to an infinite wait. + +LEMMA 1: After a thread resets the event of a mutex (or rw_lock), some +======= +thread will eventually call os_event_set() on that particular event. +Thus no infinite wait is possible in this case. + +Proof: After making the reservation the thread sets the waiters field in the +mutex to 1. Then it checks that the mutex is still reserved by some thread, +or it reserves the mutex for itself. In any case, some thread (which may be +also some earlier thread, not necessarily the one currently holding the mutex) +will set the waiters field to 0 in mutex_exit, and then call +os_event_set() with the mutex as an argument. +Q.E.D. + +LEMMA 2: If an os_event_set() call is made after some thread has called +======= +the os_event_reset() and before it starts wait on that event, the call +will not be lost to the second thread. This is true even if there is an +intervening call to os_event_reset() by another thread. +Thus no infinite wait is possible in this case. + +Proof (non-windows platforms): os_event_reset() returns a monotonically +increasing value of signal_count. This value is increased at every +call of os_event_set() If thread A has called os_event_reset() followed +by thread B calling os_event_set() and then some other thread C calling +os_event_reset(), the is_set flag of the event will be set to FALSE; +but now if thread A calls os_event_wait_low() with the signal_count +value returned from the earlier call of os_event_reset(), it will +return immediately without waiting. +Q.E.D. + +Proof (windows): If there is a writer thread which is forced to wait for +the lock, it may be able to set the state of rw_lock to RW_LOCK_WAIT_EX +The design of rw_lock ensures that there is one and only one thread +that is able to change the state to RW_LOCK_WAIT_EX and this thread is +guaranteed to acquire the lock after it is released by the current +holders and before any other waiter gets the lock. +On windows this thread waits on a separate event i.e.: wait_ex_event. +Since only one thread can wait on this event there is no chance +of this event getting reset before the writer starts wait on it. +Therefore, this thread is guaranteed to catch the os_set_event() +signalled unconditionally at the release of the lock. +Q.E.D. */ + +/* Number of spin waits on mutexes: for performance monitoring */ + +/* round=one iteration of a spin loop */ +UNIV_INTERN ib_int64_t mutex_spin_round_count = 0; +UNIV_INTERN ib_int64_t mutex_spin_wait_count = 0; +UNIV_INTERN ib_int64_t mutex_os_wait_count = 0; +UNIV_INTERN ib_int64_t mutex_exit_count = 0; + +/* The global array of wait cells for implementation of the database's own +mutexes and read-write locks */ +UNIV_INTERN sync_array_t* sync_primary_wait_array; + +/* This variable is set to TRUE when sync_init is called */ +UNIV_INTERN ibool sync_initialized = FALSE; + + +typedef struct sync_level_struct sync_level_t; +typedef struct sync_thread_struct sync_thread_t; + +#ifdef UNIV_SYNC_DEBUG +/* The latch levels currently owned by threads are stored in this data +structure; the size of this array is OS_THREAD_MAX_N */ + +UNIV_INTERN sync_thread_t* sync_thread_level_arrays; + +/* Mutex protecting sync_thread_level_arrays */ +UNIV_INTERN mutex_t sync_thread_mutex; +#endif /* UNIV_SYNC_DEBUG */ + +/* Global list of database mutexes (not OS mutexes) created. */ +UNIV_INTERN ut_list_base_node_t mutex_list; + +/* Mutex protecting the mutex_list variable */ +UNIV_INTERN mutex_t mutex_list_mutex; + +#ifdef UNIV_SYNC_DEBUG +/* Latching order checks start when this is set TRUE */ +UNIV_INTERN ibool sync_order_checks_on = FALSE; +#endif /* UNIV_SYNC_DEBUG */ + +struct sync_thread_struct{ + os_thread_id_t id; /* OS thread id */ + sync_level_t* levels; /* level array for this thread; if this is NULL + this slot is unused */ +}; + +/* Number of slots reserved for each OS thread in the sync level array */ +#define SYNC_THREAD_N_LEVELS 10000 + +struct sync_level_struct{ + void* latch; /* pointer to a mutex or an rw-lock; NULL means that + the slot is empty */ + ulint level; /* level of the latch in the latching order */ +}; + +/********************************************************************** +Creates, or rather, initializes a mutex object in a specified memory +location (which must be appropriately aligned). The mutex is initialized +in the reset state. Explicit freeing of the mutex with mutex_free is +necessary only if the memory block containing it is freed. */ +UNIV_INTERN +void +mutex_create_func( +/*==============*/ + mutex_t* mutex, /* in: pointer to memory */ +#ifdef UNIV_DEBUG + const char* cmutex_name, /* in: mutex name */ +# ifdef UNIV_SYNC_DEBUG + ulint level, /* in: level */ +# endif /* UNIV_SYNC_DEBUG */ +#endif /* UNIV_DEBUG */ + const char* cfile_name, /* in: file name where created */ + ulint cline) /* in: file line where created */ +{ +#if defined(_WIN32) && defined(UNIV_CAN_USE_X86_ASSEMBLER) + mutex_reset_lock_word(mutex); +#elif defined(HAVE_GCC_ATOMIC_BUILTINS) + mutex_reset_lock_word(mutex); +#else + os_fast_mutex_init(&(mutex->os_fast_mutex)); + mutex->lock_word = 0; +#endif + mutex->event = os_event_create(NULL); + mutex_set_waiters(mutex, 0); +#ifdef UNIV_DEBUG + mutex->magic_n = MUTEX_MAGIC_N; +#endif /* UNIV_DEBUG */ +#ifdef UNIV_SYNC_DEBUG + mutex->line = 0; + mutex->file_name = "not yet reserved"; + mutex->level = level; +#endif /* UNIV_SYNC_DEBUG */ + mutex->cfile_name = cfile_name; + mutex->cline = cline; +#ifndef UNIV_HOTBACKUP + mutex->count_os_wait = 0; +# ifdef UNIV_DEBUG + mutex->cmutex_name= cmutex_name; + mutex->count_using= 0; + mutex->mutex_type= 0; + mutex->lspent_time= 0; + mutex->lmax_spent_time= 0; + mutex->count_spin_loop= 0; + mutex->count_spin_rounds= 0; + mutex->count_os_yield= 0; +# endif /* UNIV_DEBUG */ +#endif /* !UNIV_HOTBACKUP */ + + /* Check that lock_word is aligned; this is important on Intel */ + ut_ad(((ulint)(&(mutex->lock_word))) % 4 == 0); + + /* NOTE! The very first mutexes are not put to the mutex list */ + + if ((mutex == &mutex_list_mutex) +#ifdef UNIV_SYNC_DEBUG + || (mutex == &sync_thread_mutex) +#endif /* UNIV_SYNC_DEBUG */ + ) { + + return; + } + + mutex_enter(&mutex_list_mutex); + + ut_ad(UT_LIST_GET_LEN(mutex_list) == 0 + || UT_LIST_GET_FIRST(mutex_list)->magic_n == MUTEX_MAGIC_N); + + UT_LIST_ADD_FIRST(list, mutex_list, mutex); + + mutex_exit(&mutex_list_mutex); +} + +/********************************************************************** +Calling this function is obligatory only if the memory buffer containing +the mutex is freed. Removes a mutex object from the mutex list. The mutex +is checked to be in the reset state. */ +UNIV_INTERN +void +mutex_free( +/*=======*/ + mutex_t* mutex) /* in: mutex */ +{ + ut_ad(mutex_validate(mutex)); + ut_a(mutex_get_lock_word(mutex) == 0); + ut_a(mutex_get_waiters(mutex) == 0); + + if (mutex != &mutex_list_mutex +#ifdef UNIV_SYNC_DEBUG + && mutex != &sync_thread_mutex +#endif /* UNIV_SYNC_DEBUG */ + ) { + + mutex_enter(&mutex_list_mutex); + + ut_ad(!UT_LIST_GET_PREV(list, mutex) + || UT_LIST_GET_PREV(list, mutex)->magic_n + == MUTEX_MAGIC_N); + ut_ad(!UT_LIST_GET_NEXT(list, mutex) + || UT_LIST_GET_NEXT(list, mutex)->magic_n + == MUTEX_MAGIC_N); + + UT_LIST_REMOVE(list, mutex_list, mutex); + + mutex_exit(&mutex_list_mutex); + } + + os_event_free(mutex->event); + +#if defined(_WIN32) && defined(UNIV_CAN_USE_X86_ASSEMBLER) +#elif defined(HAVE_GCC_ATOMIC_BUILTINS) +#else + os_fast_mutex_free(&(mutex->os_fast_mutex)); +#endif + /* If we free the mutex protecting the mutex list (freeing is + not necessary), we have to reset the magic number AFTER removing + it from the list. */ +#ifdef UNIV_DEBUG + mutex->magic_n = 0; +#endif /* UNIV_DEBUG */ +} + +/************************************************************************ +NOTE! Use the corresponding macro in the header file, not this function +directly. Tries to lock the mutex for the current thread. If the lock is not +acquired immediately, returns with return value 1. */ +UNIV_INTERN +ulint +mutex_enter_nowait_func( +/*====================*/ + /* out: 0 if succeed, 1 if not */ + mutex_t* mutex, /* in: pointer to mutex */ + const char* file_name __attribute__((unused)), + /* in: file name where mutex + requested */ + ulint line __attribute__((unused))) + /* in: line where requested */ +{ + ut_ad(mutex_validate(mutex)); + + if (!mutex_test_and_set(mutex)) { + + ut_d(mutex->thread_id = os_thread_get_curr_id()); +#ifdef UNIV_SYNC_DEBUG + mutex_set_debug_info(mutex, file_name, line); +#endif + + return(0); /* Succeeded! */ + } + + return(1); +} + +#ifdef UNIV_DEBUG +/********************************************************************** +Checks that the mutex has been initialized. */ +UNIV_INTERN +ibool +mutex_validate( +/*===========*/ + const mutex_t* mutex) +{ + ut_a(mutex); + ut_a(mutex->magic_n == MUTEX_MAGIC_N); + + return(TRUE); +} + +/********************************************************************** +Checks that the current thread owns the mutex. Works only in the debug +version. */ +UNIV_INTERN +ibool +mutex_own( +/*======*/ + /* out: TRUE if owns */ + const mutex_t* mutex) /* in: mutex */ +{ + ut_ad(mutex_validate(mutex)); + + return(mutex_get_lock_word(mutex) == 1 + && os_thread_eq(mutex->thread_id, os_thread_get_curr_id())); +} +#endif /* UNIV_DEBUG */ + +/********************************************************************** +Sets the waiters field in a mutex. */ +UNIV_INTERN +void +mutex_set_waiters( +/*==============*/ + mutex_t* mutex, /* in: mutex */ + ulint n) /* in: value to set */ +{ + volatile ulint* ptr; /* declared volatile to ensure that + the value is stored to memory */ + ut_ad(mutex); + + ptr = &(mutex->waiters); + + *ptr = n; /* Here we assume that the write of a single + word in memory is atomic */ +} + +/********************************************************************** +Reserves a mutex for the current thread. If the mutex is reserved, the +function spins a preset time (controlled by SYNC_SPIN_ROUNDS), waiting +for the mutex before suspending the thread. */ +UNIV_INTERN +void +mutex_spin_wait( +/*============*/ + mutex_t* mutex, /* in: pointer to mutex */ + const char* file_name, /* in: file name where mutex + requested */ + ulint line) /* in: line where requested */ +{ + ulint index; /* index of the reserved wait cell */ + ulint i; /* spin round count */ +#if defined UNIV_DEBUG && !defined UNIV_HOTBACKUP + ib_int64_t lstart_time = 0, lfinish_time; /* for timing os_wait */ + ulint ltime_diff; + ulint sec; + ulint ms; + uint timer_started = 0; +#endif /* UNIV_DEBUG && !UNIV_HOTBACKUP */ + ut_ad(mutex); + + /* This update is not thread safe, but we don't mind if the count + isn't exact. Moved out of ifdef that follows because we are willing + to sacrifice the cost of counting this as the data is valuable. + Count the number of calls to mutex_spin_wait. */ + mutex_spin_wait_count++; + +mutex_loop: + + i = 0; + + /* Spin waiting for the lock word to become zero. Note that we do + not have to assume that the read access to the lock word is atomic, + as the actual locking is always committed with atomic test-and-set. + In reality, however, all processors probably have an atomic read of + a memory word. */ + +spin_loop: +#if defined UNIV_DEBUG && !defined UNIV_HOTBACKUP + mutex->count_spin_loop++; +#endif /* UNIV_DEBUG && !UNIV_HOTBACKUP */ + + while (mutex_get_lock_word(mutex) != 0 && i < SYNC_SPIN_ROUNDS) { + if (srv_spin_wait_delay) { + ut_delay(ut_rnd_interval(0, srv_spin_wait_delay)); + } + + i++; + } + + if (i == SYNC_SPIN_ROUNDS) { +#if defined UNIV_DEBUG && !defined UNIV_HOTBACKUP + mutex->count_os_yield++; + if (timed_mutexes == 1 && timer_started==0) { + ut_usectime(&sec, &ms); + lstart_time= (ib_int64_t)sec * 1000000 + ms; + timer_started = 1; + } +#endif /* UNIV_DEBUG && !UNIV_HOTBACKUP */ + os_thread_yield(); + } + +#ifdef UNIV_SRV_PRINT_LATCH_WAITS + fprintf(stderr, + "Thread %lu spin wait mutex at %p" + " cfile %s cline %lu rnds %lu\n", + (ulong) os_thread_pf(os_thread_get_curr_id()), (void*) mutex, + mutex->cfile_name, (ulong) mutex->cline, (ulong) i); +#endif + + mutex_spin_round_count += i; + +#if defined UNIV_DEBUG && !defined UNIV_HOTBACKUP + mutex->count_spin_rounds += i; +#endif /* UNIV_DEBUG && !UNIV_HOTBACKUP */ + + if (mutex_test_and_set(mutex) == 0) { + /* Succeeded! */ + + ut_d(mutex->thread_id = os_thread_get_curr_id()); +#ifdef UNIV_SYNC_DEBUG + mutex_set_debug_info(mutex, file_name, line); +#endif + + goto finish_timing; + } + + /* We may end up with a situation where lock_word is 0 but the OS + fast mutex is still reserved. On FreeBSD the OS does not seem to + schedule a thread which is constantly calling pthread_mutex_trylock + (in mutex_test_and_set implementation). Then we could end up + spinning here indefinitely. The following 'i++' stops this infinite + spin. */ + + i++; + + if (i < SYNC_SPIN_ROUNDS) { + goto spin_loop; + } + + sync_array_reserve_cell(sync_primary_wait_array, mutex, + SYNC_MUTEX, file_name, line, &index); + + /* The memory order of the array reservation and the change in the + waiters field is important: when we suspend a thread, we first + reserve the cell and then set waiters field to 1. When threads are + released in mutex_exit, the waiters field is first set to zero and + then the event is set to the signaled state. */ + + mutex_set_waiters(mutex, 1); + + /* Try to reserve still a few times */ + for (i = 0; i < 4; i++) { + if (mutex_test_and_set(mutex) == 0) { + /* Succeeded! Free the reserved wait cell */ + + sync_array_free_cell(sync_primary_wait_array, index); + + ut_d(mutex->thread_id = os_thread_get_curr_id()); +#ifdef UNIV_SYNC_DEBUG + mutex_set_debug_info(mutex, file_name, line); +#endif + +#ifdef UNIV_SRV_PRINT_LATCH_WAITS + fprintf(stderr, "Thread %lu spin wait succeeds at 2:" + " mutex at %p\n", + (ulong) os_thread_pf(os_thread_get_curr_id()), + (void*) mutex); +#endif + + goto finish_timing; + + /* Note that in this case we leave the waiters field + set to 1. We cannot reset it to zero, as we do not + know if there are other waiters. */ + } + } + + /* Now we know that there has been some thread holding the mutex + after the change in the wait array and the waiters field was made. + Now there is no risk of infinite wait on the event. */ + +#ifdef UNIV_SRV_PRINT_LATCH_WAITS + fprintf(stderr, + "Thread %lu OS wait mutex at %p cfile %s cline %lu rnds %lu\n", + (ulong) os_thread_pf(os_thread_get_curr_id()), (void*) mutex, + mutex->cfile_name, (ulong) mutex->cline, (ulong) i); +#endif + + mutex_os_wait_count++; + +#ifndef UNIV_HOTBACKUP + mutex->count_os_wait++; +# ifdef UNIV_DEBUG + /* !!!!! Sometimes os_wait can be called without os_thread_yield */ + + if (timed_mutexes == 1 && timer_started==0) { + ut_usectime(&sec, &ms); + lstart_time= (ib_int64_t)sec * 1000000 + ms; + timer_started = 1; + } +# endif /* UNIV_DEBUG */ +#endif /* !UNIV_HOTBACKUP */ + + sync_array_wait_event(sync_primary_wait_array, index); + goto mutex_loop; + +finish_timing: +#if defined UNIV_DEBUG && !defined UNIV_HOTBACKUP + if (timed_mutexes == 1 && timer_started==1) { + ut_usectime(&sec, &ms); + lfinish_time= (ib_int64_t)sec * 1000000 + ms; + + ltime_diff= (ulint) (lfinish_time - lstart_time); + mutex->lspent_time += ltime_diff; + + if (mutex->lmax_spent_time < ltime_diff) { + mutex->lmax_spent_time= ltime_diff; + } + } +#endif /* UNIV_DEBUG && !UNIV_HOTBACKUP */ + return; +} + +/********************************************************************** +Releases the threads waiting in the primary wait array for this mutex. */ +UNIV_INTERN +void +mutex_signal_object( +/*================*/ + mutex_t* mutex) /* in: mutex */ +{ + mutex_set_waiters(mutex, 0); + + /* The memory order of resetting the waiters field and + signaling the object is important. See LEMMA 1 above. */ + os_event_set(mutex->event); + sync_array_object_signalled(sync_primary_wait_array); +} + +#ifdef UNIV_SYNC_DEBUG +/********************************************************************** +Sets the debug information for a reserved mutex. */ +UNIV_INTERN +void +mutex_set_debug_info( +/*=================*/ + mutex_t* mutex, /* in: mutex */ + const char* file_name, /* in: file where requested */ + ulint line) /* in: line where requested */ +{ + ut_ad(mutex); + ut_ad(file_name); + + sync_thread_add_level(mutex, mutex->level); + + mutex->file_name = file_name; + mutex->line = line; +} + +/********************************************************************** +Gets the debug information for a reserved mutex. */ +UNIV_INTERN +void +mutex_get_debug_info( +/*=================*/ + mutex_t* mutex, /* in: mutex */ + const char** file_name, /* out: file where requested */ + ulint* line, /* out: line where requested */ + os_thread_id_t* thread_id) /* out: id of the thread which owns + the mutex */ +{ + ut_ad(mutex); + + *file_name = mutex->file_name; + *line = mutex->line; + *thread_id = mutex->thread_id; +} + +/********************************************************************** +Prints debug info of currently reserved mutexes. */ +static +void +mutex_list_print_info( +/*==================*/ + FILE* file) /* in: file where to print */ +{ + mutex_t* mutex; + const char* file_name; + ulint line; + os_thread_id_t thread_id; + ulint count = 0; + + fputs("----------\n" + "MUTEX INFO\n" + "----------\n", file); + + mutex_enter(&mutex_list_mutex); + + mutex = UT_LIST_GET_FIRST(mutex_list); + + while (mutex != NULL) { + count++; + + if (mutex_get_lock_word(mutex) != 0) { + mutex_get_debug_info(mutex, &file_name, &line, + &thread_id); + fprintf(file, + "Locked mutex: addr %p thread %ld" + " file %s line %ld\n", + (void*) mutex, os_thread_pf(thread_id), + file_name, line); + } + + mutex = UT_LIST_GET_NEXT(list, mutex); + } + + fprintf(file, "Total number of mutexes %ld\n", count); + + mutex_exit(&mutex_list_mutex); +} + +/********************************************************************** +Counts currently reserved mutexes. Works only in the debug version. */ +UNIV_INTERN +ulint +mutex_n_reserved(void) +/*==================*/ +{ + mutex_t* mutex; + ulint count = 0; + + mutex_enter(&mutex_list_mutex); + + mutex = UT_LIST_GET_FIRST(mutex_list); + + while (mutex != NULL) { + if (mutex_get_lock_word(mutex) != 0) { + + count++; + } + + mutex = UT_LIST_GET_NEXT(list, mutex); + } + + mutex_exit(&mutex_list_mutex); + + ut_a(count >= 1); + + return(count - 1); /* Subtract one, because this function itself + was holding one mutex (mutex_list_mutex) */ +} + +/********************************************************************** +Returns TRUE if no mutex or rw-lock is currently locked. Works only in +the debug version. */ +UNIV_INTERN +ibool +sync_all_freed(void) +/*================*/ +{ + return(mutex_n_reserved() + rw_lock_n_locked() == 0); +} + +/********************************************************************** +Gets the value in the nth slot in the thread level arrays. */ +static +sync_thread_t* +sync_thread_level_arrays_get_nth( +/*=============================*/ + /* out: pointer to thread slot */ + ulint n) /* in: slot number */ +{ + ut_ad(n < OS_THREAD_MAX_N); + + return(sync_thread_level_arrays + n); +} + +/********************************************************************** +Looks for the thread slot for the calling thread. */ +static +sync_thread_t* +sync_thread_level_arrays_find_slot(void) +/*====================================*/ + /* out: pointer to thread slot, NULL if not found */ + +{ + sync_thread_t* slot; + os_thread_id_t id; + ulint i; + + id = os_thread_get_curr_id(); + + for (i = 0; i < OS_THREAD_MAX_N; i++) { + + slot = sync_thread_level_arrays_get_nth(i); + + if (slot->levels && os_thread_eq(slot->id, id)) { + + return(slot); + } + } + + return(NULL); +} + +/********************************************************************** +Looks for an unused thread slot. */ +static +sync_thread_t* +sync_thread_level_arrays_find_free(void) +/*====================================*/ + /* out: pointer to thread slot */ + +{ + sync_thread_t* slot; + ulint i; + + for (i = 0; i < OS_THREAD_MAX_N; i++) { + + slot = sync_thread_level_arrays_get_nth(i); + + if (slot->levels == NULL) { + + return(slot); + } + } + + return(NULL); +} + +/********************************************************************** +Gets the value in the nth slot in the thread level array. */ +static +sync_level_t* +sync_thread_levels_get_nth( +/*=======================*/ + /* out: pointer to level slot */ + sync_level_t* arr, /* in: pointer to level array for an OS + thread */ + ulint n) /* in: slot number */ +{ + ut_ad(n < SYNC_THREAD_N_LEVELS); + + return(arr + n); +} + +/********************************************************************** +Checks if all the level values stored in the level array are greater than +the given limit. */ +static +ibool +sync_thread_levels_g( +/*=================*/ + /* out: TRUE if all greater */ + sync_level_t* arr, /* in: pointer to level array for an OS + thread */ + ulint limit) /* in: level limit */ +{ + sync_level_t* slot; + rw_lock_t* lock; + mutex_t* mutex; + ulint i; + + for (i = 0; i < SYNC_THREAD_N_LEVELS; i++) { + + slot = sync_thread_levels_get_nth(arr, i); + + if (slot->latch != NULL) { + if (slot->level <= limit) { + + lock = slot->latch; + mutex = slot->latch; + + fprintf(stderr, + "InnoDB: sync levels should be" + " > %lu but a level is %lu\n", + (ulong) limit, (ulong) slot->level); + + if (mutex->magic_n == MUTEX_MAGIC_N) { + fprintf(stderr, + "Mutex created at %s %lu\n", + mutex->cfile_name, + (ulong) mutex->cline); + + if (mutex_get_lock_word(mutex) != 0) { + const char* file_name; + ulint line; + os_thread_id_t thread_id; + + mutex_get_debug_info( + mutex, &file_name, + &line, &thread_id); + + fprintf(stderr, + "InnoDB: Locked mutex:" + " addr %p thread %ld" + " file %s line %ld\n", + (void*) mutex, + os_thread_pf( + thread_id), + file_name, + (ulong) line); + } else { + fputs("Not locked\n", stderr); + } + } else { + rw_lock_print(lock); + } + + return(FALSE); + } + } + } + + return(TRUE); +} + +/********************************************************************** +Checks if the level value is stored in the level array. */ +static +ibool +sync_thread_levels_contain( +/*=======================*/ + /* out: TRUE if stored */ + sync_level_t* arr, /* in: pointer to level array for an OS + thread */ + ulint level) /* in: level */ +{ + sync_level_t* slot; + ulint i; + + for (i = 0; i < SYNC_THREAD_N_LEVELS; i++) { + + slot = sync_thread_levels_get_nth(arr, i); + + if (slot->latch != NULL) { + if (slot->level == level) { + + return(TRUE); + } + } + } + + return(FALSE); +} + +/********************************************************************** +Checks that the level array for the current thread is empty. */ +UNIV_INTERN +ibool +sync_thread_levels_empty_gen( +/*=========================*/ + /* out: TRUE if empty except the + exceptions specified below */ + ibool dict_mutex_allowed) /* in: TRUE if dictionary mutex is + allowed to be owned by the thread, + also purge_is_running mutex is + allowed */ +{ + sync_level_t* arr; + sync_thread_t* thread_slot; + sync_level_t* slot; + ulint i; + + if (!sync_order_checks_on) { + + return(TRUE); + } + + mutex_enter(&sync_thread_mutex); + + thread_slot = sync_thread_level_arrays_find_slot(); + + if (thread_slot == NULL) { + + mutex_exit(&sync_thread_mutex); + + return(TRUE); + } + + arr = thread_slot->levels; + + for (i = 0; i < SYNC_THREAD_N_LEVELS; i++) { + + slot = sync_thread_levels_get_nth(arr, i); + + if (slot->latch != NULL + && (!dict_mutex_allowed + || (slot->level != SYNC_DICT + && slot->level != SYNC_DICT_OPERATION))) { + + mutex_exit(&sync_thread_mutex); + ut_error; + + return(FALSE); + } + } + + mutex_exit(&sync_thread_mutex); + + return(TRUE); +} + +/********************************************************************** +Checks that the level array for the current thread is empty. */ +UNIV_INTERN +ibool +sync_thread_levels_empty(void) +/*==========================*/ + /* out: TRUE if empty */ +{ + return(sync_thread_levels_empty_gen(FALSE)); +} + +/********************************************************************** +Adds a latch and its level in the thread level array. Allocates the memory +for the array if called first time for this OS thread. Makes the checks +against other latch levels stored in the array for this thread. */ +UNIV_INTERN +void +sync_thread_add_level( +/*==================*/ + void* latch, /* in: pointer to a mutex or an rw-lock */ + ulint level) /* in: level in the latching order; if + SYNC_LEVEL_VARYING, nothing is done */ +{ + sync_level_t* array; + sync_level_t* slot; + sync_thread_t* thread_slot; + ulint i; + + if (!sync_order_checks_on) { + + return; + } + + if ((latch == (void*)&sync_thread_mutex) + || (latch == (void*)&mutex_list_mutex) + || (latch == (void*)&rw_lock_debug_mutex) + || (latch == (void*)&rw_lock_list_mutex)) { + + return; + } + + if (level == SYNC_LEVEL_VARYING) { + + return; + } + + mutex_enter(&sync_thread_mutex); + + thread_slot = sync_thread_level_arrays_find_slot(); + + if (thread_slot == NULL) { + /* We have to allocate the level array for a new thread */ + array = ut_malloc(sizeof(sync_level_t) * SYNC_THREAD_N_LEVELS); + + thread_slot = sync_thread_level_arrays_find_free(); + + thread_slot->id = os_thread_get_curr_id(); + thread_slot->levels = array; + + for (i = 0; i < SYNC_THREAD_N_LEVELS; i++) { + + slot = sync_thread_levels_get_nth(array, i); + + slot->latch = NULL; + } + } + + array = thread_slot->levels; + + /* NOTE that there is a problem with _NODE and _LEAF levels: if the + B-tree height changes, then a leaf can change to an internal node + or the other way around. We do not know at present if this can cause + unnecessary assertion failures below. */ + + switch (level) { + case SYNC_NO_ORDER_CHECK: + case SYNC_EXTERN_STORAGE: + case SYNC_TREE_NODE_FROM_HASH: + /* Do no order checking */ + break; + case SYNC_MEM_POOL: + case SYNC_MEM_HASH: + case SYNC_RECV: + case SYNC_WORK_QUEUE: + case SYNC_LOG: + case SYNC_THR_LOCAL: + case SYNC_ANY_LATCH: + case SYNC_TRX_SYS_HEADER: + case SYNC_FILE_FORMAT_TAG: + case SYNC_DOUBLEWRITE: + case SYNC_BUF_POOL: + case SYNC_SEARCH_SYS: + case SYNC_SEARCH_SYS_CONF: + case SYNC_TRX_LOCK_HEAP: + case SYNC_KERNEL: + case SYNC_IBUF_BITMAP_MUTEX: + case SYNC_RSEG: + case SYNC_TRX_UNDO: + case SYNC_PURGE_LATCH: + case SYNC_PURGE_SYS: + case SYNC_DICT_AUTOINC_MUTEX: + case SYNC_DICT_OPERATION: + case SYNC_DICT_HEADER: + case SYNC_TRX_I_S_RWLOCK: + case SYNC_TRX_I_S_LAST_READ: + if (!sync_thread_levels_g(array, level)) { + fprintf(stderr, + "InnoDB: sync_thread_levels_g(array, %lu)" + " does not hold!\n", level); + ut_error; + } + break; + case SYNC_BUF_BLOCK: + /* Either the thread must own the buffer pool mutex + (buf_pool_mutex), or it is allowed to latch only ONE + buffer block (block->mutex or buf_pool_zip_mutex). */ + ut_a((sync_thread_levels_contain(array, SYNC_BUF_POOL) + && sync_thread_levels_g(array, SYNC_BUF_BLOCK - 1)) + || sync_thread_levels_g(array, SYNC_BUF_BLOCK)); + break; + case SYNC_REC_LOCK: + ut_a((sync_thread_levels_contain(array, SYNC_KERNEL) + && sync_thread_levels_g(array, SYNC_REC_LOCK - 1)) + || sync_thread_levels_g(array, SYNC_REC_LOCK)); + break; + case SYNC_IBUF_BITMAP: + /* Either the thread must own the master mutex to all + the bitmap pages, or it is allowed to latch only ONE + bitmap page. */ + ut_a((sync_thread_levels_contain(array, SYNC_IBUF_BITMAP_MUTEX) + && sync_thread_levels_g(array, SYNC_IBUF_BITMAP - 1)) + || sync_thread_levels_g(array, SYNC_IBUF_BITMAP)); + break; + case SYNC_FSP_PAGE: + ut_a(sync_thread_levels_contain(array, SYNC_FSP)); + break; + case SYNC_FSP: + ut_a(sync_thread_levels_contain(array, SYNC_FSP) + || sync_thread_levels_g(array, SYNC_FSP)); + break; + case SYNC_TRX_UNDO_PAGE: + ut_a(sync_thread_levels_contain(array, SYNC_TRX_UNDO) + || sync_thread_levels_contain(array, SYNC_RSEG) + || sync_thread_levels_contain(array, SYNC_PURGE_SYS) + || sync_thread_levels_g(array, SYNC_TRX_UNDO_PAGE)); + break; + case SYNC_RSEG_HEADER: + ut_a(sync_thread_levels_contain(array, SYNC_RSEG)); + break; + case SYNC_RSEG_HEADER_NEW: + ut_a(sync_thread_levels_contain(array, SYNC_KERNEL) + && sync_thread_levels_contain(array, SYNC_FSP_PAGE)); + break; + case SYNC_TREE_NODE: + ut_a(sync_thread_levels_contain(array, SYNC_INDEX_TREE) + || sync_thread_levels_contain(array, SYNC_DICT_OPERATION) + || sync_thread_levels_g(array, SYNC_TREE_NODE - 1)); + break; + case SYNC_TREE_NODE_NEW: + ut_a(sync_thread_levels_contain(array, SYNC_FSP_PAGE) + || sync_thread_levels_contain(array, SYNC_IBUF_MUTEX)); + break; + case SYNC_INDEX_TREE: + ut_a((sync_thread_levels_contain(array, SYNC_IBUF_MUTEX) + && sync_thread_levels_contain(array, SYNC_FSP) + && sync_thread_levels_g(array, SYNC_FSP_PAGE - 1)) + || sync_thread_levels_g(array, SYNC_TREE_NODE - 1)); + break; + case SYNC_IBUF_MUTEX: + ut_a(sync_thread_levels_g(array, SYNC_FSP_PAGE - 1)); + break; + case SYNC_IBUF_PESS_INSERT_MUTEX: + ut_a(sync_thread_levels_g(array, SYNC_FSP - 1) + && !sync_thread_levels_contain(array, SYNC_IBUF_MUTEX)); + break; + case SYNC_IBUF_HEADER: + ut_a(sync_thread_levels_g(array, SYNC_FSP - 1) + && !sync_thread_levels_contain(array, SYNC_IBUF_MUTEX) + && !sync_thread_levels_contain( + array, SYNC_IBUF_PESS_INSERT_MUTEX)); + break; + case SYNC_DICT: +#ifdef UNIV_DEBUG + ut_a(buf_debug_prints + || sync_thread_levels_g(array, SYNC_DICT)); +#else /* UNIV_DEBUG */ + ut_a(sync_thread_levels_g(array, SYNC_DICT)); +#endif /* UNIV_DEBUG */ + break; + default: + ut_error; + } + + for (i = 0; i < SYNC_THREAD_N_LEVELS; i++) { + + slot = sync_thread_levels_get_nth(array, i); + + if (slot->latch == NULL) { + slot->latch = latch; + slot->level = level; + + break; + } + } + + ut_a(i < SYNC_THREAD_N_LEVELS); + + mutex_exit(&sync_thread_mutex); +} + +/********************************************************************** +Removes a latch from the thread level array if it is found there. */ +UNIV_INTERN +ibool +sync_thread_reset_level( +/*====================*/ + /* out: TRUE if found from the array; it is an error + if the latch is not found */ + void* latch) /* in: pointer to a mutex or an rw-lock */ +{ + sync_level_t* array; + sync_level_t* slot; + sync_thread_t* thread_slot; + ulint i; + + if (!sync_order_checks_on) { + + return(FALSE); + } + + if ((latch == (void*)&sync_thread_mutex) + || (latch == (void*)&mutex_list_mutex) + || (latch == (void*)&rw_lock_debug_mutex) + || (latch == (void*)&rw_lock_list_mutex)) { + + return(FALSE); + } + + mutex_enter(&sync_thread_mutex); + + thread_slot = sync_thread_level_arrays_find_slot(); + + if (thread_slot == NULL) { + + ut_error; + + mutex_exit(&sync_thread_mutex); + return(FALSE); + } + + array = thread_slot->levels; + + for (i = 0; i < SYNC_THREAD_N_LEVELS; i++) { + + slot = sync_thread_levels_get_nth(array, i); + + if (slot->latch == latch) { + slot->latch = NULL; + + mutex_exit(&sync_thread_mutex); + + return(TRUE); + } + } + + if (((mutex_t*) latch)->magic_n != MUTEX_MAGIC_N) { + rw_lock_t* rw_lock; + + rw_lock = (rw_lock_t*) latch; + + if (rw_lock->level == SYNC_LEVEL_VARYING) { + mutex_exit(&sync_thread_mutex); + + return(TRUE); + } + } + + ut_error; + + mutex_exit(&sync_thread_mutex); + + return(FALSE); +} +#endif /* UNIV_SYNC_DEBUG */ + +/********************************************************************** +Initializes the synchronization data structures. */ +UNIV_INTERN +void +sync_init(void) +/*===========*/ +{ +#ifdef UNIV_SYNC_DEBUG + sync_thread_t* thread_slot; + ulint i; +#endif /* UNIV_SYNC_DEBUG */ + + ut_a(sync_initialized == FALSE); + + sync_initialized = TRUE; + + /* Create the primary system wait array which is protected by an OS + mutex */ + + sync_primary_wait_array = sync_array_create(OS_THREAD_MAX_N, + SYNC_ARRAY_OS_MUTEX); +#ifdef UNIV_SYNC_DEBUG + /* Create the thread latch level array where the latch levels + are stored for each OS thread */ + + sync_thread_level_arrays = ut_malloc(OS_THREAD_MAX_N + * sizeof(sync_thread_t)); + for (i = 0; i < OS_THREAD_MAX_N; i++) { + + thread_slot = sync_thread_level_arrays_get_nth(i); + thread_slot->levels = NULL; + } +#endif /* UNIV_SYNC_DEBUG */ + /* Init the mutex list and create the mutex to protect it. */ + + UT_LIST_INIT(mutex_list); + mutex_create(&mutex_list_mutex, SYNC_NO_ORDER_CHECK); +#ifdef UNIV_SYNC_DEBUG + mutex_create(&sync_thread_mutex, SYNC_NO_ORDER_CHECK); +#endif /* UNIV_SYNC_DEBUG */ + + /* Init the rw-lock list and create the mutex to protect it. */ + + UT_LIST_INIT(rw_lock_list); + mutex_create(&rw_lock_list_mutex, SYNC_NO_ORDER_CHECK); + +#ifdef UNIV_SYNC_DEBUG + mutex_create(&rw_lock_debug_mutex, SYNC_NO_ORDER_CHECK); + + rw_lock_debug_event = os_event_create(NULL); + rw_lock_debug_waiters = FALSE; +#endif /* UNIV_SYNC_DEBUG */ +} + +/********************************************************************** +Frees the resources in InnoDB's own synchronization data structures. Use +os_sync_free() after calling this. */ +UNIV_INTERN +void +sync_close(void) +/*===========*/ +{ + mutex_t* mutex; + + sync_array_free(sync_primary_wait_array); + + mutex = UT_LIST_GET_FIRST(mutex_list); + + while (mutex) { + mutex_free(mutex); + mutex = UT_LIST_GET_FIRST(mutex_list); + } + + mutex_free(&mutex_list_mutex); +#ifdef UNIV_SYNC_DEBUG + mutex_free(&sync_thread_mutex); +#endif /* UNIV_SYNC_DEBUG */ +} + +/*********************************************************************** +Prints wait info of the sync system. */ +UNIV_INTERN +void +sync_print_wait_info( +/*=================*/ + FILE* file) /* in: file where to print */ +{ +#ifdef UNIV_SYNC_DEBUG + fprintf(file, "Mutex exits %llu, rws exits %llu, rwx exits %llu\n", + mutex_exit_count, rw_s_exit_count, rw_x_exit_count); +#endif + + fprintf(file, + "Mutex spin waits %llu, rounds %llu, OS waits %llu\n" + "RW-shared spins %llu, OS waits %llu;" + " RW-excl spins %llu, OS waits %llu\n", + mutex_spin_wait_count, + mutex_spin_round_count, + mutex_os_wait_count, + rw_s_spin_wait_count, + rw_s_os_wait_count, + rw_x_spin_wait_count, + rw_x_os_wait_count); + + fprintf(file, + "Spin rounds per wait: %.2f mutex, %.2f RW-shared, " + "%.2f RW-excl\n", + (double) mutex_spin_round_count / + (mutex_spin_wait_count ? mutex_spin_wait_count : 1), + (double) rw_s_spin_round_count / + (rw_s_spin_wait_count ? rw_s_spin_wait_count : 1), + (double) rw_x_spin_round_count / + (rw_x_spin_wait_count ? rw_x_spin_wait_count : 1)); +} + +/*********************************************************************** +Prints info of the sync system. */ +UNIV_INTERN +void +sync_print( +/*=======*/ + FILE* file) /* in: file where to print */ +{ +#ifdef UNIV_SYNC_DEBUG + mutex_list_print_info(file); + + rw_lock_list_print_info(file); +#endif /* UNIV_SYNC_DEBUG */ + + sync_array_print_info(file, sync_primary_wait_array); + + sync_print_wait_info(file); +} === added directory 'storage/xtradb/thr' === added file 'storage/xtradb/thr/thr0loc.c' --- a/storage/xtradb/thr/thr0loc.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/thr/thr0loc.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,273 @@ +/***************************************************************************** + +Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +The thread local storage + +Created 10/5/1995 Heikki Tuuri +*******************************************************/ + +#include "thr0loc.h" +#ifdef UNIV_NONINL +#include "thr0loc.ic" +#endif + +#include "sync0sync.h" +#include "hash0hash.h" +#include "mem0mem.h" +#include "srv0srv.h" + +/* + IMPLEMENTATION OF THREAD LOCAL STORAGE + ====================================== + +The threads sometimes need private data which depends on the thread id. +This is implemented as a hash table, where the hash value is calculated +from the thread id, to prepare for a large number of threads. The hash table +is protected by a mutex. If you need modify the program and put new data to +the thread local storage, just add it to struct thr_local_struct in the +header file. */ + +/* Mutex protecting the local storage hash table */ +static mutex_t thr_local_mutex; + +/* The hash table. The module is not yet initialized when it is NULL. */ +static hash_table_t* thr_local_hash = NULL; +ulint thr_local_hash_n_nodes = 0; + +/* The private data for each thread should be put to +the structure below and the accessor functions written +for the field. */ +typedef struct thr_local_struct thr_local_t; + +struct thr_local_struct{ + os_thread_id_t id; /* id of the thread which owns this struct */ + os_thread_t handle; /* operating system handle to the thread */ + ulint slot_no;/* the index of the slot in the thread table + for this thread */ + ibool in_ibuf;/* TRUE if the the thread is doing an ibuf + operation */ + hash_node_t hash; /* hash chain node */ + ulint magic_n; +}; + +#define THR_LOCAL_MAGIC_N 1231234 + +/*********************************************************************** +Returns the local storage struct for a thread. */ +static +thr_local_t* +thr_local_get( +/*==========*/ + /* out: local storage */ + os_thread_id_t id) /* in: thread id of the thread */ +{ + thr_local_t* local; + +try_again: + ut_ad(thr_local_hash); + ut_ad(mutex_own(&thr_local_mutex)); + + /* Look for the local struct in the hash table */ + + local = NULL; + + HASH_SEARCH(hash, thr_local_hash, os_thread_pf(id), + thr_local_t*, local,, os_thread_eq(local->id, id)); + if (local == NULL) { + mutex_exit(&thr_local_mutex); + + thr_local_create(); + + mutex_enter(&thr_local_mutex); + + goto try_again; + } + + ut_ad(local->magic_n == THR_LOCAL_MAGIC_N); + + return(local); +} + +/*********************************************************************** +Gets the slot number in the thread table of a thread. */ +UNIV_INTERN +ulint +thr_local_get_slot_no( +/*==================*/ + /* out: slot number */ + os_thread_id_t id) /* in: thread id of the thread */ +{ + ulint slot_no; + thr_local_t* local; + + mutex_enter(&thr_local_mutex); + + local = thr_local_get(id); + + slot_no = local->slot_no; + + mutex_exit(&thr_local_mutex); + + return(slot_no); +} + +/*********************************************************************** +Sets the slot number in the thread table of a thread. */ +UNIV_INTERN +void +thr_local_set_slot_no( +/*==================*/ + os_thread_id_t id, /* in: thread id of the thread */ + ulint slot_no)/* in: slot number */ +{ + thr_local_t* local; + + mutex_enter(&thr_local_mutex); + + local = thr_local_get(id); + + local->slot_no = slot_no; + + mutex_exit(&thr_local_mutex); +} + +/*********************************************************************** +Returns pointer to the 'in_ibuf' field within the current thread local +storage. */ +UNIV_INTERN +ibool* +thr_local_get_in_ibuf_field(void) +/*=============================*/ + /* out: pointer to the in_ibuf field */ +{ + thr_local_t* local; + + mutex_enter(&thr_local_mutex); + + local = thr_local_get(os_thread_get_curr_id()); + + mutex_exit(&thr_local_mutex); + + return(&(local->in_ibuf)); +} + +/*********************************************************************** +Creates a local storage struct for the calling new thread. */ +UNIV_INTERN +void +thr_local_create(void) +/*==================*/ +{ + thr_local_t* local; + + if (thr_local_hash == NULL) { + thr_local_init(); + } + + local = mem_alloc(sizeof(thr_local_t)); + + local->id = os_thread_get_curr_id(); + local->handle = os_thread_get_curr(); + local->magic_n = THR_LOCAL_MAGIC_N; + + local->in_ibuf = FALSE; + + mutex_enter(&thr_local_mutex); + + HASH_INSERT(thr_local_t, hash, thr_local_hash, + os_thread_pf(os_thread_get_curr_id()), + local); + + thr_local_hash_n_nodes++; + mutex_exit(&thr_local_mutex); +} + +/*********************************************************************** +Frees the local storage struct for the specified thread. */ +UNIV_INTERN +void +thr_local_free( +/*===========*/ + os_thread_id_t id) /* in: thread id */ +{ + thr_local_t* local; + + mutex_enter(&thr_local_mutex); + + /* Look for the local struct in the hash table */ + + HASH_SEARCH(hash, thr_local_hash, os_thread_pf(id), + thr_local_t*, local,, os_thread_eq(local->id, id)); + if (local == NULL) { + mutex_exit(&thr_local_mutex); + + return; + } + + HASH_DELETE(thr_local_t, hash, thr_local_hash, + os_thread_pf(id), local); + thr_local_hash_n_nodes--; + + mutex_exit(&thr_local_mutex); + + ut_a(local->magic_n == THR_LOCAL_MAGIC_N); + + mem_free(local); +} + +/******************************************************************** +Initializes the thread local storage module. */ +UNIV_INTERN +void +thr_local_init(void) +/*================*/ +{ + + ut_a(thr_local_hash == NULL); + + thr_local_hash = hash_create(OS_THREAD_MAX_N + 100); + + mutex_create(&thr_local_mutex, SYNC_THR_LOCAL); +} + +/************************************************************************* +Return local hash table informations. */ + +ulint +thr_local_hash_cells(void) +/*======================*/ +{ + if (thr_local_hash) { + return (thr_local_hash->n_cells); + } else { + return 0; + } +} + +ulint +thr_local_hash_nodes(void) +/*======================*/ +{ + if (thr_local_hash) { + return (thr_local_hash_n_nodes + * (sizeof(thr_local_t) + MEM_BLOCK_HEADER_SIZE)); + } else { + return 0; + } +} === added directory 'storage/xtradb/trx' === added file 'storage/xtradb/trx/trx0i_s.c' --- a/storage/xtradb/trx/trx0i_s.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/trx/trx0i_s.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,1431 @@ +/***************************************************************************** + +Copyright (c) 2007, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +INFORMATION SCHEMA innodb_trx, innodb_locks and +innodb_lock_waits tables fetch code. + +The code below fetches information needed to fill those +3 dynamic tables and uploads it into a "transactions +table cache" for later retrieval. + +Created July 17, 2007 Vasil Dimov +*******************************************************/ + +#include <mysql/plugin.h> + +#include "mysql_addons.h" + +#include "univ.i" +#include "buf0buf.h" +#include "dict0dict.h" +#include "ha0storage.h" +#include "ha_prototypes.h" +#include "hash0hash.h" +#include "lock0iter.h" +#include "lock0lock.h" +#include "mem0mem.h" +#include "page0page.h" +#include "rem0rec.h" +#include "row0row.h" +#include "srv0srv.h" +#include "sync0rw.h" +#include "sync0sync.h" +#include "sync0types.h" +#include "trx0i_s.h" +#include "trx0sys.h" +#include "trx0trx.h" +#include "ut0mem.h" +#include "ut0ut.h" + +#define TABLE_CACHE_INITIAL_ROWSNUM 1024 + +/* Table cache's rows are stored in a set of chunks. When a new row is +added a new chunk is allocated if necessary. MEM_CHUNKS_IN_TABLE_CACHE +specifies the maximum number of chunks. +Assuming that the first one is 1024 rows (TABLE_CACHE_INITIAL_ROWSNUM) +and each subsequent is N/2 where N is the number of rows we have +allocated till now, then 39th chunk would have 1677416425 number of rows +and all chunks would have 3354832851 number of rows. */ +#define MEM_CHUNKS_IN_TABLE_CACHE 39 + +/* The following are some testing auxiliary macros. Do not enable them +in a production environment. */ + +#if 0 +/* If this is enabled then lock folds will always be different +resulting in equal rows being put in a different cells of the hash +table. Checking for duplicates will be flawed because different +fold will be calculated when a row is searched in the hash table. */ +#define TEST_LOCK_FOLD_ALWAYS_DIFFERENT +#endif + +#if 0 +/* This effectively kills the search-for-duplicate-before-adding-a-row +function, but searching in the hash is still performed. It will always +be assumed that lock is not present and insertion will be performed in +the hash table. */ +#define TEST_NO_LOCKS_ROW_IS_EVER_EQUAL_TO_LOCK_T +#endif + +#if 0 +/* This aggressively repeats adding each row many times. Depending on +the above settings this may be noop or may result in lots of rows being +added. */ +#define TEST_ADD_EACH_LOCKS_ROW_MANY_TIMES +#endif + +#if 0 +/* Very similar to TEST_NO_LOCKS_ROW_IS_EVER_EQUAL_TO_LOCK_T but hash +table search is not performed at all. */ +#define TEST_DO_NOT_CHECK_FOR_DUPLICATE_ROWS +#endif + +#if 0 +/* Do not insert each row into the hash table, duplicates may appear +if this is enabled, also if this is enabled searching into the hash is +noop because it will be empty. */ +#define TEST_DO_NOT_INSERT_INTO_THE_HASH_TABLE +#endif + +#define MAX_ALLOWED_FOR_STORAGE(cache) \ + (TRX_I_S_MEM_LIMIT \ + - (cache)->mem_allocd) + +#define MAX_ALLOWED_FOR_ALLOC(cache) \ + (TRX_I_S_MEM_LIMIT \ + - (cache)->mem_allocd \ + - ha_storage_get_size((cache)->storage)) + +/* Memory for each table in the intermediate buffer is allocated in +separate chunks. These chunks are considered to be concatenated to +represent one flat array of rows. */ +typedef struct i_s_mem_chunk_struct { + ulint offset; /* offset, in number of rows */ + ulint rows_allocd; /* the size of this chunk, in number + of rows */ + void* base; /* start of the chunk */ +} i_s_mem_chunk_t; + +/* This represents one table's cache. */ +typedef struct i_s_table_cache_struct { + ulint rows_used; /* number of used rows */ + ulint rows_allocd; /* number of allocated rows */ + ulint row_size; /* size of a single row */ + i_s_mem_chunk_t chunks[MEM_CHUNKS_IN_TABLE_CACHE]; /* array of + memory chunks that stores the + rows */ +} i_s_table_cache_t; + +/* This structure describes the intermediate buffer */ +struct trx_i_s_cache_struct { + rw_lock_t rw_lock; /* read-write lock protecting + the rest of this structure */ + ullint last_read; /* last time the cache was read; + measured in microseconds since + epoch */ + mutex_t last_read_mutex;/* mutex protecting the + last_read member - it is updated + inside a shared lock of the + rw_lock member */ + i_s_table_cache_t innodb_trx; /* innodb_trx table */ + i_s_table_cache_t innodb_locks; /* innodb_locks table */ + i_s_table_cache_t innodb_lock_waits;/* innodb_lock_waits table */ +/* the hash table size is LOCKS_HASH_CELLS_NUM * sizeof(void*) bytes */ +#define LOCKS_HASH_CELLS_NUM 10000 + hash_table_t* locks_hash; /* hash table used to eliminate + duplicate entries in the + innodb_locks table */ +#define CACHE_STORAGE_INITIAL_SIZE 1024 +#define CACHE_STORAGE_HASH_CELLS 2048 + ha_storage_t* storage; /* storage for external volatile + data that can possibly not be + available later, when we release + the kernel mutex */ + ulint mem_allocd; /* the amount of memory + allocated with mem_alloc*() */ + ibool is_truncated; /* this is TRUE if the memory + limit was hit and thus the data + in the cache is truncated */ +}; + +/* This is the intermediate buffer where data needed to fill the +INFORMATION SCHEMA tables is fetched and later retrieved by the C++ +code in handler/i_s.cc. */ +static trx_i_s_cache_t trx_i_s_cache_static; +UNIV_INTERN trx_i_s_cache_t* trx_i_s_cache = &trx_i_s_cache_static; + +/*********************************************************************** +For a record lock that is in waiting state retrieves the only bit that +is set, for a table lock returns ULINT_UNDEFINED. */ +static +ulint +wait_lock_get_heap_no( +/*==================*/ + /* out: record number within the heap */ + const lock_t* lock) /* in: lock */ +{ + ulint ret; + + switch (lock_get_type(lock)) { + case LOCK_REC: + ret = lock_rec_find_set_bit(lock); + ut_a(ret != ULINT_UNDEFINED); + break; + case LOCK_TABLE: + ret = ULINT_UNDEFINED; + break; + default: + ut_error; + } + + return(ret); +} + +/*********************************************************************** +Initializes the members of a table cache. */ +static +void +table_cache_init( +/*=============*/ + i_s_table_cache_t* table_cache, /* out: table cache */ + size_t row_size) /* in: the size of a + row */ +{ + ulint i; + + table_cache->rows_used = 0; + table_cache->rows_allocd = 0; + table_cache->row_size = row_size; + + for (i = 0; i < MEM_CHUNKS_IN_TABLE_CACHE; i++) { + + /* the memory is actually allocated in + table_cache_create_empty_row() */ + table_cache->chunks[i].base = NULL; + } +} + +/*********************************************************************** +Returns an empty row from a table cache. The row is allocated if no more +empty rows are available. The number of used rows is incremented. +If the memory limit is hit then NULL is returned and nothing is +allocated. */ +static +void* +table_cache_create_empty_row( +/*=========================*/ + /* out: empty row, or + NULL if out of memory */ + i_s_table_cache_t* table_cache, /* in/out: table cache */ + trx_i_s_cache_t* cache) /* in/out: cache to record + how many bytes are + allocated */ +{ + ulint i; + void* row; + + ut_a(table_cache->rows_used <= table_cache->rows_allocd); + + if (table_cache->rows_used == table_cache->rows_allocd) { + + /* rows_used == rows_allocd means that new chunk needs + to be allocated: either no more empty rows in the + last allocated chunk or nothing has been allocated yet + (rows_num == rows_allocd == 0); */ + + i_s_mem_chunk_t* chunk; + ulint req_bytes; + ulint got_bytes; + ulint req_rows; + ulint got_rows; + + /* find the first not allocated chunk */ + for (i = 0; i < MEM_CHUNKS_IN_TABLE_CACHE; i++) { + + if (table_cache->chunks[i].base == NULL) { + + break; + } + } + + /* i == MEM_CHUNKS_IN_TABLE_CACHE means that all chunks + have been allocated :-X */ + ut_a(i < MEM_CHUNKS_IN_TABLE_CACHE); + + /* allocate the chunk we just found */ + + if (i == 0) { + + /* first chunk, nothing is allocated yet */ + req_rows = TABLE_CACHE_INITIAL_ROWSNUM; + } else { + + /* Memory is increased by the formula + new = old + old / 2; We are trying not to be + aggressive here (= using the common new = old * 2) + because the allocated memory will not be freed + until InnoDB exit (it is reused). So it is better + to once allocate the memory in more steps, but + have less unused/wasted memory than to use less + steps in allocation (which is done once in a + lifetime) but end up with lots of unused/wasted + memory. */ + req_rows = table_cache->rows_allocd / 2; + } + req_bytes = req_rows * table_cache->row_size; + + if (req_bytes > MAX_ALLOWED_FOR_ALLOC(cache)) { + + return(NULL); + } + + chunk = &table_cache->chunks[i]; + + chunk->base = mem_alloc2(req_bytes, &got_bytes); + + got_rows = got_bytes / table_cache->row_size; + + cache->mem_allocd += got_bytes; + +#if 0 + printf("allocating chunk %d req bytes=%lu, got bytes=%lu, " + "row size=%lu, " + "req rows=%lu, got rows=%lu\n", + i, req_bytes, got_bytes, + table_cache->row_size, + req_rows, got_rows); +#endif + + chunk->rows_allocd = got_rows; + + table_cache->rows_allocd += got_rows; + + /* adjust the offset of the next chunk */ + if (i < MEM_CHUNKS_IN_TABLE_CACHE - 1) { + + table_cache->chunks[i + 1].offset + = chunk->offset + chunk->rows_allocd; + } + + /* return the first empty row in the newly allocated + chunk */ + row = chunk->base; + } else { + + char* chunk_start; + ulint offset; + + /* there is an empty row, no need to allocate new + chunks */ + + /* find the first chunk that contains allocated but + empty/unused rows */ + for (i = 0; i < MEM_CHUNKS_IN_TABLE_CACHE; i++) { + + if (table_cache->chunks[i].offset + + table_cache->chunks[i].rows_allocd + > table_cache->rows_used) { + + break; + } + } + + /* i == MEM_CHUNKS_IN_TABLE_CACHE means that all chunks + are full, but + table_cache->rows_used != table_cache->rows_allocd means + exactly the opposite - there are allocated but + empty/unused rows :-X */ + ut_a(i < MEM_CHUNKS_IN_TABLE_CACHE); + + chunk_start = (char*) table_cache->chunks[i].base; + offset = table_cache->rows_used + - table_cache->chunks[i].offset; + + row = chunk_start + offset * table_cache->row_size; + } + + table_cache->rows_used++; + + return(row); +} + +/*********************************************************************** +Fills i_s_trx_row_t object. +If memory can not be allocated then FALSE is returned. */ +static +ibool +fill_trx_row( +/*=========*/ + /* out: FALSE if + allocation fails */ + i_s_trx_row_t* row, /* out: result object + that's filled */ + const trx_t* trx, /* in: transaction to + get data from */ + const i_s_locks_row_t* requested_lock_row,/* in: pointer to the + corresponding row in + innodb_locks if trx is + waiting or NULL if trx + is not waiting */ + trx_i_s_cache_t* cache) /* in/out: cache into + which to copy volatile + strings */ +{ + row->trx_id = trx_get_id(trx); + row->trx_started = (ib_time_t) trx->start_time; + row->trx_state = trx_get_que_state_str(trx); + + if (trx->wait_lock != NULL) { + + ut_a(requested_lock_row != NULL); + + row->requested_lock_row = requested_lock_row; + row->trx_wait_started = (ib_time_t) trx->wait_started; + } else { + + ut_a(requested_lock_row == NULL); + + row->requested_lock_row = NULL; + row->trx_wait_started = 0; + } + + row->trx_weight = (ullint) ut_conv_dulint_to_longlong(TRX_WEIGHT(trx)); + + if (trx->mysql_thd != NULL) { + row->trx_mysql_thread_id + = thd_get_thread_id(trx->mysql_thd); + } else { + /* For internal transactions e.g., purge and transactions + being recovered at startup there is no associated MySQL + thread data structure. */ + row->trx_mysql_thread_id = 0; + } + + if (trx->mysql_query_str != NULL && *trx->mysql_query_str != NULL) { + + if (strlen(*trx->mysql_query_str) + > TRX_I_S_TRX_QUERY_MAX_LEN) { + + char query[TRX_I_S_TRX_QUERY_MAX_LEN + 1]; + + memcpy(query, *trx->mysql_query_str, + TRX_I_S_TRX_QUERY_MAX_LEN); + query[TRX_I_S_TRX_QUERY_MAX_LEN] = '\0'; + + row->trx_query = ha_storage_put_memlim( + cache->storage, query, + TRX_I_S_TRX_QUERY_MAX_LEN + 1, + MAX_ALLOWED_FOR_STORAGE(cache)); + } else { + + row->trx_query = ha_storage_put_str_memlim( + cache->storage, *trx->mysql_query_str, + MAX_ALLOWED_FOR_STORAGE(cache)); + } + + if (row->trx_query == NULL) { + + return(FALSE); + } + } else { + + row->trx_query = NULL; + } + + return(TRUE); +} + +/*********************************************************************** +Format the nth field of "rec" and put it in "buf". The result is always +'\0'-terminated. Returns the number of bytes that were written to "buf" +(including the terminating '\0'). */ +static +ulint +put_nth_field( +/*==========*/ + /* out: end of the result */ + char* buf, /* out: buffer */ + ulint buf_size,/* in: buffer size in bytes */ + ulint n, /* in: number of field */ + const dict_index_t* index, /* in: index */ + const rec_t* rec, /* in: record */ + const ulint* offsets)/* in: record offsets, returned + by rec_get_offsets() */ +{ + const byte* data; + ulint data_len; + dict_field_t* dict_field; + ulint ret; + + ut_ad(rec_offs_validate(rec, NULL, offsets)); + + if (buf_size == 0) { + + return(0); + } + + ret = 0; + + if (n > 0) { + /* we must append ", " before the actual data */ + + if (buf_size < 3) { + + buf[0] = '\0'; + return(1); + } + + memcpy(buf, ", ", 3); + + buf += 2; + buf_size -= 2; + ret += 2; + } + + /* now buf_size >= 1 */ + + data = rec_get_nth_field(rec, offsets, n, &data_len); + + dict_field = dict_index_get_nth_field(index, n); + + ret += row_raw_format((const char*) data, data_len, + dict_field, buf, buf_size); + + return(ret); +} + +/*********************************************************************** +Fills the "lock_data" member of i_s_locks_row_t object. +If memory can not be allocated then FALSE is returned. */ +static +ibool +fill_lock_data( +/*===========*/ + /* out: FALSE if allocation fails */ + const char** lock_data,/* out: "lock_data" to fill */ + const lock_t* lock, /* in: lock used to find the data */ + ulint heap_no,/* in: rec num used to find the data */ + trx_i_s_cache_t* cache) /* in/out: cache where to store + volatile data */ +{ + mtr_t mtr; + + const buf_block_t* block; + const page_t* page; + const rec_t* rec; + + ut_a(lock_get_type(lock) == LOCK_REC); + + mtr_start(&mtr); + + block = buf_page_try_get(lock_rec_get_space_id(lock), + lock_rec_get_page_no(lock), + &mtr); + + if (block == NULL) { + + *lock_data = NULL; + + mtr_commit(&mtr); + + return(TRUE); + } + + page = (const page_t*) buf_block_get_frame(block); + + rec = page_find_rec_with_heap_no(page, heap_no); + + if (page_rec_is_infimum(rec)) { + + *lock_data = ha_storage_put_str_memlim( + cache->storage, "infimum pseudo-record", + MAX_ALLOWED_FOR_STORAGE(cache)); + } else if (page_rec_is_supremum(rec)) { + + *lock_data = ha_storage_put_str_memlim( + cache->storage, "supremum pseudo-record", + MAX_ALLOWED_FOR_STORAGE(cache)); + } else { + + const dict_index_t* index; + ulint n_fields; + mem_heap_t* heap; + ulint offsets_onstack[REC_OFFS_NORMAL_SIZE]; + ulint* offsets; + char buf[TRX_I_S_LOCK_DATA_MAX_LEN]; + ulint buf_used; + ulint i; + + rec_offs_init(offsets_onstack); + offsets = offsets_onstack; + + index = lock_rec_get_index(lock); + + n_fields = dict_index_get_n_unique(index); + + ut_a(n_fields > 0); + + heap = NULL; + offsets = rec_get_offsets(rec, index, offsets, n_fields, + &heap); + + /* format and store the data */ + + buf_used = 0; + for (i = 0; i < n_fields; i++) { + + buf_used += put_nth_field( + buf + buf_used, sizeof(buf) - buf_used, + i, index, rec, offsets) - 1; + } + + *lock_data = (const char*) ha_storage_put_memlim( + cache->storage, buf, buf_used + 1, + MAX_ALLOWED_FOR_STORAGE(cache)); + + if (UNIV_UNLIKELY(heap != NULL)) { + + /* this means that rec_get_offsets() has created a new + heap and has stored offsets in it; check that this is + really the case and free the heap */ + ut_a(offsets != offsets_onstack); + mem_heap_free(heap); + } + } + + mtr_commit(&mtr); + + if (*lock_data == NULL) { + + return(FALSE); + } + + return(TRUE); +} + +/*********************************************************************** +Fills i_s_locks_row_t object. Returns its first argument. +If memory can not be allocated then FALSE is returned. */ +static +ibool +fill_locks_row( +/*===========*/ + /* out: FALSE if allocation fails */ + i_s_locks_row_t* row, /* out: result object that's filled */ + const lock_t* lock, /* in: lock to get data from */ + ulint heap_no,/* in: lock's record number + or ULINT_UNDEFINED if the lock + is a table lock */ + trx_i_s_cache_t* cache) /* in/out: cache into which to copy + volatile strings */ +{ + row->lock_trx_id = lock_get_trx_id(lock); + row->lock_mode = lock_get_mode_str(lock); + row->lock_type = lock_get_type_str(lock); + + row->lock_table = ha_storage_put_str_memlim( + cache->storage, lock_get_table_name(lock), + MAX_ALLOWED_FOR_STORAGE(cache)); + + /* memory could not be allocated */ + if (row->lock_table == NULL) { + + return(FALSE); + } + + switch (lock_get_type(lock)) { + case LOCK_REC: + row->lock_index = ha_storage_put_str_memlim( + cache->storage, lock_rec_get_index_name(lock), + MAX_ALLOWED_FOR_STORAGE(cache)); + + /* memory could not be allocated */ + if (row->lock_index == NULL) { + + return(FALSE); + } + + row->lock_space = lock_rec_get_space_id(lock); + row->lock_page = lock_rec_get_page_no(lock); + row->lock_rec = heap_no; + + if (!fill_lock_data(&row->lock_data, lock, heap_no, cache)) { + + /* memory could not be allocated */ + return(FALSE); + } + + break; + case LOCK_TABLE: + row->lock_index = NULL; + + row->lock_space = ULINT_UNDEFINED; + row->lock_page = ULINT_UNDEFINED; + row->lock_rec = ULINT_UNDEFINED; + + row->lock_data = NULL; + + break; + default: + ut_error; + } + + row->lock_table_id = lock_get_table_id(lock); + + row->hash_chain.value = row; + + return(TRUE); +} + +/*********************************************************************** +Fills i_s_lock_waits_row_t object. Returns its first argument. */ +static +i_s_lock_waits_row_t* +fill_lock_waits_row( +/*================*/ + /* out: result object + that's filled */ + i_s_lock_waits_row_t* row, /* out: result object + that's filled */ + const i_s_locks_row_t* requested_lock_row,/* in: pointer to the + relevant requested lock + row in innodb_locks */ + const i_s_locks_row_t* blocking_lock_row)/* in: pointer to the + relevant blocking lock + row in innodb_locks */ +{ + row->requested_lock_row = requested_lock_row; + row->blocking_lock_row = blocking_lock_row; + + return(row); +} + +/*********************************************************************** +Calculates a hash fold for a lock. For a record lock the fold is +calculated from 4 elements, which uniquely identify a lock at a given +point in time: transaction id, space id, page number, record number. +For a table lock the fold is table's id. */ +static +ulint +fold_lock( +/*======*/ + /* out: fold */ + const lock_t* lock, /* in: lock object to fold */ + ulint heap_no)/* in: lock's record number + or ULINT_UNDEFINED if the lock + is a table lock */ +{ +#ifdef TEST_LOCK_FOLD_ALWAYS_DIFFERENT + static ulint fold = 0; + + return(fold++); +#else + ulint ret; + + switch (lock_get_type(lock)) { + case LOCK_REC: + ut_a(heap_no != ULINT_UNDEFINED); + + ret = ut_fold_ulint_pair((ulint) lock_get_trx_id(lock), + lock_rec_get_space_id(lock)); + + ret = ut_fold_ulint_pair(ret, + lock_rec_get_page_no(lock)); + + ret = ut_fold_ulint_pair(ret, heap_no); + + break; + case LOCK_TABLE: + /* this check is actually not necessary for continuing + correct operation, but something must have gone wrong if + it fails. */ + ut_a(heap_no == ULINT_UNDEFINED); + + ret = (ulint) lock_get_table_id(lock); + + break; + default: + ut_error; + } + + return(ret); +#endif +} + +/*********************************************************************** +Checks whether i_s_locks_row_t object represents a lock_t object. */ +static +ibool +locks_row_eq_lock( +/*==============*/ + /* out: TRUE if they match */ + const i_s_locks_row_t* row, /* in: innodb_locks row */ + const lock_t* lock, /* in: lock object */ + ulint heap_no)/* in: lock's record number + or ULINT_UNDEFINED if the lock + is a table lock */ +{ +#ifdef TEST_NO_LOCKS_ROW_IS_EVER_EQUAL_TO_LOCK_T + return(0); +#else + switch (lock_get_type(lock)) { + case LOCK_REC: + ut_a(heap_no != ULINT_UNDEFINED); + + return(row->lock_trx_id == lock_get_trx_id(lock) + && row->lock_space == lock_rec_get_space_id(lock) + && row->lock_page == lock_rec_get_page_no(lock) + && row->lock_rec == heap_no); + + case LOCK_TABLE: + /* this check is actually not necessary for continuing + correct operation, but something must have gone wrong if + it fails. */ + ut_a(heap_no == ULINT_UNDEFINED); + + return(row->lock_trx_id == lock_get_trx_id(lock) + && row->lock_table_id == lock_get_table_id(lock)); + + default: + ut_error; + return(FALSE); + } +#endif +} + +/*********************************************************************** +Searches for a row in the innodb_locks cache that has a specified id. +This happens in O(1) time since a hash table is used. Returns pointer to +the row or NULL if none is found. */ +static +i_s_locks_row_t* +search_innodb_locks( +/*================*/ + /* out: row or NULL */ + trx_i_s_cache_t* cache, /* in: cache */ + const lock_t* lock, /* in: lock to search for */ + ulint heap_no)/* in: lock's record number + or ULINT_UNDEFINED if the lock + is a table lock */ +{ + i_s_hash_chain_t* hash_chain; + + HASH_SEARCH( + /* hash_chain->"next" */ + next, + /* the hash table */ + cache->locks_hash, + /* fold */ + fold_lock(lock, heap_no), + /* the type of the next variable */ + i_s_hash_chain_t*, + /* auxiliary variable */ + hash_chain, + /* assertion on every traversed item */ + , + /* this determines if we have found the lock */ + locks_row_eq_lock(hash_chain->value, lock, heap_no)); + + if (hash_chain == NULL) { + + return(NULL); + } + /* else */ + + return(hash_chain->value); +} + +/*********************************************************************** +Adds new element to the locks cache, enlarging it if necessary. +Returns a pointer to the added row. If the row is already present then +no row is added and a pointer to the existing row is returned. +If row can not be allocated then NULL is returned. */ +static +i_s_locks_row_t* +add_lock_to_cache( +/*==============*/ + /* out: row */ + trx_i_s_cache_t* cache, /* in/out: cache */ + const lock_t* lock, /* in: the element to add */ + ulint heap_no)/* in: lock's record number + or ULINT_UNDEFINED if the lock + is a table lock */ +{ + i_s_locks_row_t* dst_row; + +#ifdef TEST_ADD_EACH_LOCKS_ROW_MANY_TIMES + ulint i; + for (i = 0; i < 10000; i++) { +#endif +#ifndef TEST_DO_NOT_CHECK_FOR_DUPLICATE_ROWS + /* quit if this lock is already present */ + dst_row = search_innodb_locks(cache, lock, heap_no); + if (dst_row != NULL) { + + return(dst_row); + } +#endif + + dst_row = (i_s_locks_row_t*) + table_cache_create_empty_row(&cache->innodb_locks, cache); + + /* memory could not be allocated */ + if (dst_row == NULL) { + + return(NULL); + } + + if (!fill_locks_row(dst_row, lock, heap_no, cache)) { + + /* memory could not be allocated */ + cache->innodb_locks.rows_used--; + return(NULL); + } + +#ifndef TEST_DO_NOT_INSERT_INTO_THE_HASH_TABLE + HASH_INSERT( + /* the type used in the hash chain */ + i_s_hash_chain_t, + /* hash_chain->"next" */ + next, + /* the hash table */ + cache->locks_hash, + /* fold */ + fold_lock(lock, heap_no), + /* add this data to the hash */ + &dst_row->hash_chain); +#endif +#ifdef TEST_ADD_EACH_LOCKS_ROW_MANY_TIMES + } /* for()-loop */ +#endif + + return(dst_row); +} + +/*********************************************************************** +Adds new pair of locks to the lock waits cache. +If memory can not be allocated then FALSE is returned. */ +static +ibool +add_lock_wait_to_cache( +/*===================*/ + /* out: FALSE if + allocation fails */ + trx_i_s_cache_t* cache, /* in/out: cache */ + const i_s_locks_row_t* requested_lock_row,/* in: pointer to the + relevant requested lock + row in innodb_locks */ + const i_s_locks_row_t* blocking_lock_row)/* in: pointer to the + relevant blocking lock + row in innodb_locks */ +{ + i_s_lock_waits_row_t* dst_row; + + dst_row = (i_s_lock_waits_row_t*) + table_cache_create_empty_row(&cache->innodb_lock_waits, + cache); + + /* memory could not be allocated */ + if (dst_row == NULL) { + + return(FALSE); + } + + fill_lock_waits_row(dst_row, requested_lock_row, blocking_lock_row); + + return(TRUE); +} + +/*********************************************************************** +Adds transaction's relevant (important) locks to cache. +If the transaction is waiting, then the wait lock is added to +innodb_locks and a pointer to the added row is returned in +requested_lock_row, otherwise requested_lock_row is set to NULL. +If rows can not be allocated then FALSE is returned and the value of +requested_lock_row is undefined. */ +static +ibool +add_trx_relevant_locks_to_cache( +/*============================*/ + /* out: FALSE if allocation fails */ + trx_i_s_cache_t* cache, /* in/out: cache */ + const trx_t* trx, /* in: transaction */ + i_s_locks_row_t** requested_lock_row)/* out: pointer to the + requested lock row, or NULL or + undefined */ +{ + ut_ad(mutex_own(&kernel_mutex)); + + /* If transaction is waiting we add the wait lock and all locks + from another transactions that are blocking the wait lock. */ + if (trx->que_state == TRX_QUE_LOCK_WAIT) { + + const lock_t* curr_lock; + ulint wait_lock_heap_no; + i_s_locks_row_t* blocking_lock_row; + lock_queue_iterator_t iter; + + ut_a(trx->wait_lock != NULL); + + wait_lock_heap_no + = wait_lock_get_heap_no(trx->wait_lock); + + /* add the requested lock */ + *requested_lock_row + = add_lock_to_cache(cache, trx->wait_lock, + wait_lock_heap_no); + + /* memory could not be allocated */ + if (*requested_lock_row == NULL) { + + return(FALSE); + } + + /* then iterate over the locks before the wait lock and + add the ones that are blocking it */ + + lock_queue_iterator_reset(&iter, trx->wait_lock, + ULINT_UNDEFINED); + + curr_lock = lock_queue_iterator_get_prev(&iter); + while (curr_lock != NULL) { + + if (lock_has_to_wait(trx->wait_lock, + curr_lock)) { + + /* add the lock that is + blocking trx->wait_lock */ + blocking_lock_row + = add_lock_to_cache( + cache, curr_lock, + /* heap_no is the same + for the wait and waited + locks */ + wait_lock_heap_no); + + /* memory could not be allocated */ + if (blocking_lock_row == NULL) { + + return(FALSE); + } + + /* add the relation between both locks + to innodb_lock_waits */ + if (!add_lock_wait_to_cache( + cache, *requested_lock_row, + blocking_lock_row)) { + + /* memory could not be allocated */ + return(FALSE); + } + } + + curr_lock = lock_queue_iterator_get_prev(&iter); + } + } else { + + *requested_lock_row = NULL; + } + + return(TRUE); +} + +/*********************************************************************** +Checks if the cache can safely be updated. */ +static +ibool +can_cache_be_updated( +/*=================*/ + trx_i_s_cache_t* cache) /* in: cache */ +{ + ullint now; + +/* The minimum time that a cache must not be updated after it has been +read for the last time; measured in microseconds. We use this technique +to ensure that SELECTs which join several INFORMATION SCHEMA tables read +the same version of the cache. */ +#define CACHE_MIN_IDLE_TIME_US 100000 /* 0.1 sec */ + + /* Here we read cache->last_read without acquiring its mutex + because last_read is only updated when a shared rw lock on the + whole cache is being held (see trx_i_s_cache_end_read()) and + we are currently holding an exclusive rw lock on the cache. + So it is not possible for last_read to be updated while we are + reading it. */ + +#ifdef UNIV_SYNC_DEBUG + ut_a(rw_lock_own(&cache->rw_lock, RW_LOCK_EX)); +#endif + + now = ut_time_us(NULL); + if (now - cache->last_read > CACHE_MIN_IDLE_TIME_US) { + + return(TRUE); + } + + return(FALSE); +} + +/*********************************************************************** +Declare a cache empty, preparing it to be filled up. Not all resources +are freed because they can be reused. */ +static +void +trx_i_s_cache_clear( +/*================*/ + trx_i_s_cache_t* cache) /* out: cache to clear */ +{ + cache->innodb_trx.rows_used = 0; + cache->innodb_locks.rows_used = 0; + cache->innodb_lock_waits.rows_used = 0; + + hash_table_clear(cache->locks_hash); + + ha_storage_empty(&cache->storage); +} + +/*********************************************************************** +Fetches the data needed to fill the 3 INFORMATION SCHEMA tables into the +table cache buffer. Cache must be locked for write. */ +static +void +fetch_data_into_cache( +/*==================*/ + trx_i_s_cache_t* cache) /* in/out: cache */ +{ + trx_t* trx; + i_s_trx_row_t* trx_row; + i_s_locks_row_t* requested_lock_row; + + ut_ad(mutex_own(&kernel_mutex)); + + trx_i_s_cache_clear(cache); + + /* We iterate over the list of all transactions and add each one + to innodb_trx's cache. We also add all locks that are relevant + to each transaction into innodb_locks' and innodb_lock_waits' + caches. */ + + for (trx = UT_LIST_GET_FIRST(trx_sys->trx_list); + trx != NULL; + trx = UT_LIST_GET_NEXT(trx_list, trx)) { + + if (!add_trx_relevant_locks_to_cache(cache, trx, + &requested_lock_row)) { + + cache->is_truncated = TRUE; + return; + } + + trx_row = (i_s_trx_row_t*) + table_cache_create_empty_row(&cache->innodb_trx, + cache); + + /* memory could not be allocated */ + if (trx_row == NULL) { + + cache->is_truncated = TRUE; + return; + } + + if (!fill_trx_row(trx_row, trx, requested_lock_row, cache)) { + + /* memory could not be allocated */ + cache->innodb_trx.rows_used--; + cache->is_truncated = TRUE; + return; + } + } + + cache->is_truncated = FALSE; +} + +/*********************************************************************** +Update the transactions cache if it has not been read for some time. +Called from handler/i_s.cc. */ +UNIV_INTERN +int +trx_i_s_possibly_fetch_data_into_cache( +/*===================================*/ + /* out: 0 - fetched, 1 - not */ + trx_i_s_cache_t* cache) /* in/out: cache */ +{ + if (!can_cache_be_updated(cache)) { + + return(1); + } + + /* We are going to access trx->query in all transactions */ + innobase_mysql_prepare_print_arbitrary_thd(); + + /* We need to read trx_sys and record/table lock queues */ + mutex_enter(&kernel_mutex); + + fetch_data_into_cache(cache); + + mutex_exit(&kernel_mutex); + + innobase_mysql_end_print_arbitrary_thd(); + + return(0); +} + +/*********************************************************************** +Returns TRUE if the data in the cache is truncated due to the memory +limit posed by TRX_I_S_MEM_LIMIT. */ +UNIV_INTERN +ibool +trx_i_s_cache_is_truncated( +/*=======================*/ + /* out: TRUE if truncated */ + trx_i_s_cache_t* cache) /* in: cache */ +{ + return(cache->is_truncated); +} + +/*********************************************************************** +Initialize INFORMATION SCHEMA trx related cache. */ +UNIV_INTERN +void +trx_i_s_cache_init( +/*===============*/ + trx_i_s_cache_t* cache) /* out: cache to init */ +{ + /* The latching is done in the following order: + acquire trx_i_s_cache_t::rw_lock, X + acquire kernel_mutex + release kernel_mutex + release trx_i_s_cache_t::rw_lock + acquire trx_i_s_cache_t::rw_lock, S + acquire trx_i_s_cache_t::last_read_mutex + release trx_i_s_cache_t::last_read_mutex + release trx_i_s_cache_t::rw_lock */ + + rw_lock_create(&cache->rw_lock, SYNC_TRX_I_S_RWLOCK); + + cache->last_read = 0; + + mutex_create(&cache->last_read_mutex, SYNC_TRX_I_S_LAST_READ); + + table_cache_init(&cache->innodb_trx, sizeof(i_s_trx_row_t)); + table_cache_init(&cache->innodb_locks, sizeof(i_s_locks_row_t)); + table_cache_init(&cache->innodb_lock_waits, + sizeof(i_s_lock_waits_row_t)); + + cache->locks_hash = hash_create(LOCKS_HASH_CELLS_NUM); + + cache->storage = ha_storage_create(CACHE_STORAGE_INITIAL_SIZE, + CACHE_STORAGE_HASH_CELLS); + + cache->mem_allocd = 0; + + cache->is_truncated = FALSE; +} + +/*********************************************************************** +Issue a shared/read lock on the tables cache. */ +UNIV_INTERN +void +trx_i_s_cache_start_read( +/*=====================*/ + trx_i_s_cache_t* cache) /* in: cache */ +{ + rw_lock_s_lock(&cache->rw_lock); +} + +/*********************************************************************** +Release a shared/read lock on the tables cache. */ +UNIV_INTERN +void +trx_i_s_cache_end_read( +/*===================*/ + trx_i_s_cache_t* cache) /* in: cache */ +{ + ullint now; + +#ifdef UNIV_SYNC_DEBUG + ut_a(rw_lock_own(&cache->rw_lock, RW_LOCK_SHARED)); +#endif + + /* update cache last read time */ + now = ut_time_us(NULL); + mutex_enter(&cache->last_read_mutex); + cache->last_read = now; + mutex_exit(&cache->last_read_mutex); + + rw_lock_s_unlock(&cache->rw_lock); +} + +/*********************************************************************** +Issue an exclusive/write lock on the tables cache. */ +UNIV_INTERN +void +trx_i_s_cache_start_write( +/*======================*/ + trx_i_s_cache_t* cache) /* in: cache */ +{ + rw_lock_x_lock(&cache->rw_lock); +} + +/*********************************************************************** +Release an exclusive/write lock on the tables cache. */ +UNIV_INTERN +void +trx_i_s_cache_end_write( +/*====================*/ + trx_i_s_cache_t* cache) /* in: cache */ +{ +#ifdef UNIV_SYNC_DEBUG + ut_a(rw_lock_own(&cache->rw_lock, RW_LOCK_EX)); +#endif + + rw_lock_x_unlock(&cache->rw_lock); +} + +/*********************************************************************** +Selects a INFORMATION SCHEMA table cache from the whole cache. */ +static +i_s_table_cache_t* +cache_select_table( +/*===============*/ + /* out: table cache */ + trx_i_s_cache_t* cache, /* in: whole cache */ + enum i_s_table table) /* in: which table */ +{ + i_s_table_cache_t* table_cache; + +#ifdef UNIV_SYNC_DEBUG + ut_a(rw_lock_own(&cache->rw_lock, RW_LOCK_SHARED) + || rw_lock_own(&cache->rw_lock, RW_LOCK_EX)); +#endif + + switch (table) { + case I_S_INNODB_TRX: + table_cache = &cache->innodb_trx; + break; + case I_S_INNODB_LOCKS: + table_cache = &cache->innodb_locks; + break; + case I_S_INNODB_LOCK_WAITS: + table_cache = &cache->innodb_lock_waits; + break; + default: + ut_error; + } + + return(table_cache); +} + +/*********************************************************************** +Retrieves the number of used rows in the cache for a given +INFORMATION SCHEMA table. */ +UNIV_INTERN +ulint +trx_i_s_cache_get_rows_used( +/*========================*/ + /* out: number of rows */ + trx_i_s_cache_t* cache, /* in: cache */ + enum i_s_table table) /* in: which table */ +{ + i_s_table_cache_t* table_cache; + + table_cache = cache_select_table(cache, table); + + return(table_cache->rows_used); +} + +/*********************************************************************** +Retrieves the nth row (zero-based) in the cache for a given +INFORMATION SCHEMA table. */ +UNIV_INTERN +void* +trx_i_s_cache_get_nth_row( +/*======================*/ + /* out: row */ + trx_i_s_cache_t* cache, /* in: cache */ + enum i_s_table table, /* in: which table */ + ulint n) /* in: row number */ +{ + i_s_table_cache_t* table_cache; + ulint i; + void* row; + + table_cache = cache_select_table(cache, table); + + ut_a(n < table_cache->rows_used); + + row = NULL; + + for (i = 0; i < MEM_CHUNKS_IN_TABLE_CACHE; i++) { + + if (table_cache->chunks[i].offset + + table_cache->chunks[i].rows_allocd > n) { + + row = (char*) table_cache->chunks[i].base + + (n - table_cache->chunks[i].offset) + * table_cache->row_size; + break; + } + } + + ut_a(row != NULL); + + return(row); +} + +/*********************************************************************** +Crafts a lock id string from a i_s_locks_row_t object. Returns its +second argument. This function aborts if there is not enough space in +lock_id. Be sure to provide at least TRX_I_S_LOCK_ID_MAX_LEN + 1 if you +want to be 100% sure that it will not abort. */ +UNIV_INTERN +char* +trx_i_s_create_lock_id( +/*===================*/ + /* out: resulting lock id */ + const i_s_locks_row_t* row, /* in: innodb_locks row */ + char* lock_id,/* out: resulting lock_id */ + ulint lock_id_size)/* in: size of the lock id + buffer */ +{ + int res_len; + + /* please adjust TRX_I_S_LOCK_ID_MAX_LEN if you change this */ + + if (row->lock_space != ULINT_UNDEFINED) { + /* record lock */ + res_len = ut_snprintf(lock_id, lock_id_size, + TRX_ID_FMT ":%lu:%lu:%lu", + row->lock_trx_id, row->lock_space, + row->lock_page, row->lock_rec); + } else { + /* table lock */ + res_len = ut_snprintf(lock_id, lock_id_size, + TRX_ID_FMT ":%llu", + row->lock_trx_id, + row->lock_table_id); + } + + /* the typecast is safe because snprintf(3) never returns + negative result */ + ut_a(res_len >= 0); + ut_a((ulint) res_len < lock_id_size); + + return(lock_id); +} === added file 'storage/xtradb/trx/trx0purge.c' --- a/storage/xtradb/trx/trx0purge.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/trx/trx0purge.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,1175 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Purge old versions + +Created 3/26/1996 Heikki Tuuri +*******************************************************/ + +#include "trx0purge.h" + +#ifdef UNIV_NONINL +#include "trx0purge.ic" +#endif + +#include "fsp0fsp.h" +#include "mach0data.h" +#include "trx0rseg.h" +#include "trx0trx.h" +#include "trx0roll.h" +#include "read0read.h" +#include "fut0fut.h" +#include "que0que.h" +#include "row0purge.h" +#include "row0upd.h" +#include "trx0rec.h" +#include "srv0que.h" +#include "os0thread.h" + +/* The global data structure coordinating a purge */ +UNIV_INTERN trx_purge_t* purge_sys = NULL; + +/* A dummy undo record used as a return value when we have a whole undo log +which needs no purge */ +UNIV_INTERN trx_undo_rec_t trx_purge_dummy_rec; + +/********************************************************************* +Checks if trx_id is >= purge_view: then it is guaranteed that its update +undo log still exists in the system. */ +UNIV_INTERN +ibool +trx_purge_update_undo_must_exist( +/*=============================*/ + /* out: TRUE if is sure that it is preserved, also + if the function returns FALSE, it is possible that + the undo log still exists in the system */ + dulint trx_id) /* in: transaction id */ +{ +#ifdef UNIV_SYNC_DEBUG + ut_ad(rw_lock_own(&(purge_sys->latch), RW_LOCK_SHARED)); +#endif /* UNIV_SYNC_DEBUG */ + + if (!read_view_sees_trx_id(purge_sys->view, trx_id)) { + + return(TRUE); + } + + return(FALSE); +} + +/*=================== PURGE RECORD ARRAY =============================*/ + +/*********************************************************************** +Stores info of an undo log record during a purge. */ +static +trx_undo_inf_t* +trx_purge_arr_store_info( +/*=====================*/ + /* out: pointer to the storage cell */ + dulint trx_no, /* in: transaction number */ + dulint undo_no)/* in: undo number */ +{ + trx_undo_inf_t* cell; + trx_undo_arr_t* arr; + ulint i; + + arr = purge_sys->arr; + + for (i = 0;; i++) { + cell = trx_undo_arr_get_nth_info(arr, i); + + if (!(cell->in_use)) { + /* Not in use, we may store here */ + cell->undo_no = undo_no; + cell->trx_no = trx_no; + cell->in_use = TRUE; + + arr->n_used++; + + return(cell); + } + } +} + +/*********************************************************************** +Removes info of an undo log record during a purge. */ +UNIV_INLINE +void +trx_purge_arr_remove_info( +/*======================*/ + trx_undo_inf_t* cell) /* in: pointer to the storage cell */ +{ + trx_undo_arr_t* arr; + + arr = purge_sys->arr; + + cell->in_use = FALSE; + + ut_ad(arr->n_used > 0); + + arr->n_used--; +} + +/*********************************************************************** +Gets the biggest pair of a trx number and an undo number in a purge array. */ +static +void +trx_purge_arr_get_biggest( +/*======================*/ + trx_undo_arr_t* arr, /* in: purge array */ + dulint* trx_no, /* out: transaction number: ut_dulint_zero + if array is empty */ + dulint* undo_no)/* out: undo number */ +{ + trx_undo_inf_t* cell; + dulint pair_trx_no; + dulint pair_undo_no; + int trx_cmp; + ulint n_used; + ulint i; + ulint n; + + n = 0; + n_used = arr->n_used; + pair_trx_no = ut_dulint_zero; + pair_undo_no = ut_dulint_zero; + + for (i = 0;; i++) { + cell = trx_undo_arr_get_nth_info(arr, i); + + if (cell->in_use) { + n++; + trx_cmp = ut_dulint_cmp(cell->trx_no, pair_trx_no); + + if ((trx_cmp > 0) + || ((trx_cmp == 0) + && (ut_dulint_cmp(cell->undo_no, + pair_undo_no) >= 0))) { + + pair_trx_no = cell->trx_no; + pair_undo_no = cell->undo_no; + } + } + + if (n == n_used) { + *trx_no = pair_trx_no; + *undo_no = pair_undo_no; + + return; + } + } +} + +/******************************************************************** +Builds a purge 'query' graph. The actual purge is performed by executing +this query graph. */ +static +que_t* +trx_purge_graph_build(void) +/*=======================*/ + /* out, own: the query graph */ +{ + mem_heap_t* heap; + que_fork_t* fork; + que_thr_t* thr; + /* que_thr_t* thr2; */ + + heap = mem_heap_create(512); + fork = que_fork_create(NULL, NULL, QUE_FORK_PURGE, heap); + fork->trx = purge_sys->trx; + + thr = que_thr_create(fork, heap); + + thr->child = row_purge_node_create(thr, heap); + + /* thr2 = que_thr_create(fork, fork, heap); + + thr2->child = row_purge_node_create(fork, thr2, heap); */ + + return(fork); +} + +/************************************************************************ +Creates the global purge system control structure and inits the history +mutex. */ +UNIV_INTERN +void +trx_purge_sys_create(void) +/*======================*/ +{ + ut_ad(mutex_own(&kernel_mutex)); + + purge_sys = mem_alloc(sizeof(trx_purge_t)); + + purge_sys->state = TRX_STOP_PURGE; + + purge_sys->n_pages_handled = 0; + + purge_sys->purge_trx_no = ut_dulint_zero; + purge_sys->purge_undo_no = ut_dulint_zero; + purge_sys->next_stored = FALSE; + + rw_lock_create(&purge_sys->latch, SYNC_PURGE_LATCH); + + mutex_create(&purge_sys->mutex, SYNC_PURGE_SYS); + + purge_sys->heap = mem_heap_create(256); + + purge_sys->arr = trx_undo_arr_create(); + + purge_sys->sess = sess_open(); + + purge_sys->trx = purge_sys->sess->trx; + + purge_sys->trx->is_purge = 1; + + ut_a(trx_start_low(purge_sys->trx, ULINT_UNDEFINED)); + + purge_sys->query = trx_purge_graph_build(); + + purge_sys->view = read_view_oldest_copy_or_open_new(ut_dulint_zero, + purge_sys->heap); +} + +/*================ UNDO LOG HISTORY LIST =============================*/ + +/************************************************************************ +Adds the update undo log as the first log in the history list. Removes the +update undo log segment from the rseg slot if it is too big for reuse. */ +UNIV_INTERN +void +trx_purge_add_update_undo_to_history( +/*=================================*/ + trx_t* trx, /* in: transaction */ + page_t* undo_page, /* in: update undo log header page, + x-latched */ + mtr_t* mtr) /* in: mtr */ +{ + trx_undo_t* undo; + trx_rseg_t* rseg; + trx_rsegf_t* rseg_header; + trx_usegf_t* seg_header; + trx_ulogf_t* undo_header; + trx_upagef_t* page_header; + ulint hist_size; + + undo = trx->update_undo; + + ut_ad(undo); + + rseg = undo->rseg; + + ut_ad(mutex_own(&(rseg->mutex))); + + rseg_header = trx_rsegf_get(rseg->space, rseg->zip_size, + rseg->page_no, mtr); + + undo_header = undo_page + undo->hdr_offset; + seg_header = undo_page + TRX_UNDO_SEG_HDR; + page_header = undo_page + TRX_UNDO_PAGE_HDR; + + if (undo->state != TRX_UNDO_CACHED) { + /* The undo log segment will not be reused */ + + if (undo->id >= TRX_RSEG_N_SLOTS) { + fprintf(stderr, + "InnoDB: Error: undo->id is %lu\n", + (ulong) undo->id); + ut_error; + } + + trx_rsegf_set_nth_undo(rseg_header, undo->id, FIL_NULL, mtr); + + hist_size = mtr_read_ulint(rseg_header + TRX_RSEG_HISTORY_SIZE, + MLOG_4BYTES, mtr); + ut_ad(undo->size == flst_get_len( + seg_header + TRX_UNDO_PAGE_LIST, mtr)); + + mlog_write_ulint(rseg_header + TRX_RSEG_HISTORY_SIZE, + hist_size + undo->size, MLOG_4BYTES, mtr); + } + + /* Add the log as the first in the history list */ + flst_add_first(rseg_header + TRX_RSEG_HISTORY, + undo_header + TRX_UNDO_HISTORY_NODE, mtr); + mutex_enter(&kernel_mutex); + trx_sys->rseg_history_len++; + mutex_exit(&kernel_mutex); + + /* Write the trx number to the undo log header */ + mlog_write_dulint(undo_header + TRX_UNDO_TRX_NO, trx->no, mtr); + /* Write information about delete markings to the undo log header */ + + if (!undo->del_marks) { + mlog_write_ulint(undo_header + TRX_UNDO_DEL_MARKS, FALSE, + MLOG_2BYTES, mtr); + } + + if (rseg->last_page_no == FIL_NULL) { + + rseg->last_page_no = undo->hdr_page_no; + rseg->last_offset = undo->hdr_offset; + rseg->last_trx_no = trx->no; + rseg->last_del_marks = undo->del_marks; + } +} + +/************************************************************************** +Frees an undo log segment which is in the history list. Cuts the end of the +history list at the youngest undo log in this segment. */ +static +void +trx_purge_free_segment( +/*===================*/ + trx_rseg_t* rseg, /* in: rollback segment */ + fil_addr_t hdr_addr, /* in: the file address of log_hdr */ + ulint n_removed_logs) /* in: count of how many undo logs we + will cut off from the end of the + history list */ +{ + page_t* undo_page; + trx_rsegf_t* rseg_hdr; + trx_ulogf_t* log_hdr; + trx_usegf_t* seg_hdr; + ibool freed; + ulint seg_size; + ulint hist_size; + ibool marked = FALSE; + mtr_t mtr; + + /* fputs("Freeing an update undo log segment\n", stderr); */ + + ut_ad(mutex_own(&(purge_sys->mutex))); +loop: + mtr_start(&mtr); + mutex_enter(&(rseg->mutex)); + + rseg_hdr = trx_rsegf_get(rseg->space, rseg->zip_size, + rseg->page_no, &mtr); + + undo_page = trx_undo_page_get(rseg->space, rseg->zip_size, + hdr_addr.page, &mtr); + seg_hdr = undo_page + TRX_UNDO_SEG_HDR; + log_hdr = undo_page + hdr_addr.boffset; + + /* Mark the last undo log totally purged, so that if the system + crashes, the tail of the undo log will not get accessed again. The + list of pages in the undo log tail gets inconsistent during the + freeing of the segment, and therefore purge should not try to access + them again. */ + + if (!marked) { + mlog_write_ulint(log_hdr + TRX_UNDO_DEL_MARKS, FALSE, + MLOG_2BYTES, &mtr); + marked = TRUE; + } + + freed = fseg_free_step_not_header(seg_hdr + TRX_UNDO_FSEG_HEADER, + &mtr); + if (!freed) { + mutex_exit(&(rseg->mutex)); + mtr_commit(&mtr); + + goto loop; + } + + /* The page list may now be inconsistent, but the length field + stored in the list base node tells us how big it was before we + started the freeing. */ + + seg_size = flst_get_len(seg_hdr + TRX_UNDO_PAGE_LIST, &mtr); + + /* We may free the undo log segment header page; it must be freed + within the same mtr as the undo log header is removed from the + history list: otherwise, in case of a database crash, the segment + could become inaccessible garbage in the file space. */ + + flst_cut_end(rseg_hdr + TRX_RSEG_HISTORY, + log_hdr + TRX_UNDO_HISTORY_NODE, n_removed_logs, &mtr); + + mutex_enter(&kernel_mutex); + ut_ad(trx_sys->rseg_history_len >= n_removed_logs); + trx_sys->rseg_history_len -= n_removed_logs; + mutex_exit(&kernel_mutex); + + freed = FALSE; + + while (!freed) { + /* Here we assume that a file segment with just the header + page can be freed in a few steps, so that the buffer pool + is not flooded with bufferfixed pages: see the note in + fsp0fsp.c. */ + + freed = fseg_free_step(seg_hdr + TRX_UNDO_FSEG_HEADER, + &mtr); + } + + hist_size = mtr_read_ulint(rseg_hdr + TRX_RSEG_HISTORY_SIZE, + MLOG_4BYTES, &mtr); + ut_ad(hist_size >= seg_size); + + mlog_write_ulint(rseg_hdr + TRX_RSEG_HISTORY_SIZE, + hist_size - seg_size, MLOG_4BYTES, &mtr); + + ut_ad(rseg->curr_size >= seg_size); + + rseg->curr_size -= seg_size; + + mutex_exit(&(rseg->mutex)); + + mtr_commit(&mtr); +} + +/************************************************************************ +Removes unnecessary history data from a rollback segment. */ +static +void +trx_purge_truncate_rseg_history( +/*============================*/ + trx_rseg_t* rseg, /* in: rollback segment */ + dulint limit_trx_no, /* in: remove update undo logs whose + trx number is < limit_trx_no */ + dulint limit_undo_no) /* in: if transaction number is equal + to limit_trx_no, truncate undo records + with undo number < limit_undo_no */ +{ + fil_addr_t hdr_addr; + fil_addr_t prev_hdr_addr; + trx_rsegf_t* rseg_hdr; + page_t* undo_page; + trx_ulogf_t* log_hdr; + trx_usegf_t* seg_hdr; + int cmp; + ulint n_removed_logs = 0; + mtr_t mtr; + + ut_ad(mutex_own(&(purge_sys->mutex))); + + mtr_start(&mtr); + mutex_enter(&(rseg->mutex)); + + rseg_hdr = trx_rsegf_get(rseg->space, rseg->zip_size, + rseg->page_no, &mtr); + + hdr_addr = trx_purge_get_log_from_hist( + flst_get_last(rseg_hdr + TRX_RSEG_HISTORY, &mtr)); +loop: + if (hdr_addr.page == FIL_NULL) { + + mutex_exit(&(rseg->mutex)); + + mtr_commit(&mtr); + + return; + } + + undo_page = trx_undo_page_get(rseg->space, rseg->zip_size, + hdr_addr.page, &mtr); + + log_hdr = undo_page + hdr_addr.boffset; + + cmp = ut_dulint_cmp(mach_read_from_8(log_hdr + TRX_UNDO_TRX_NO), + limit_trx_no); + if (cmp == 0) { + trx_undo_truncate_start(rseg, rseg->space, hdr_addr.page, + hdr_addr.boffset, limit_undo_no); + } + + if (cmp >= 0) { + mutex_enter(&kernel_mutex); + ut_a(trx_sys->rseg_history_len >= n_removed_logs); + trx_sys->rseg_history_len -= n_removed_logs; + mutex_exit(&kernel_mutex); + + flst_truncate_end(rseg_hdr + TRX_RSEG_HISTORY, + log_hdr + TRX_UNDO_HISTORY_NODE, + n_removed_logs, &mtr); + + mutex_exit(&(rseg->mutex)); + mtr_commit(&mtr); + + return; + } + + prev_hdr_addr = trx_purge_get_log_from_hist( + flst_get_prev_addr(log_hdr + TRX_UNDO_HISTORY_NODE, &mtr)); + n_removed_logs++; + + seg_hdr = undo_page + TRX_UNDO_SEG_HDR; + + if ((mach_read_from_2(seg_hdr + TRX_UNDO_STATE) == TRX_UNDO_TO_PURGE) + && (mach_read_from_2(log_hdr + TRX_UNDO_NEXT_LOG) == 0)) { + + /* We can free the whole log segment */ + + mutex_exit(&(rseg->mutex)); + mtr_commit(&mtr); + + trx_purge_free_segment(rseg, hdr_addr, n_removed_logs); + + n_removed_logs = 0; + } else { + mutex_exit(&(rseg->mutex)); + mtr_commit(&mtr); + } + + mtr_start(&mtr); + mutex_enter(&(rseg->mutex)); + + rseg_hdr = trx_rsegf_get(rseg->space, rseg->zip_size, + rseg->page_no, &mtr); + + hdr_addr = prev_hdr_addr; + + goto loop; +} + +/************************************************************************ +Removes unnecessary history data from rollback segments. NOTE that when this +function is called, the caller must not have any latches on undo log pages! */ +static +void +trx_purge_truncate_history(void) +/*============================*/ +{ + trx_rseg_t* rseg; + dulint limit_trx_no; + dulint limit_undo_no; + + ut_ad(mutex_own(&(purge_sys->mutex))); + + trx_purge_arr_get_biggest(purge_sys->arr, &limit_trx_no, + &limit_undo_no); + + if (ut_dulint_is_zero(limit_trx_no)) { + + limit_trx_no = purge_sys->purge_trx_no; + limit_undo_no = purge_sys->purge_undo_no; + } + + /* We play safe and set the truncate limit at most to the purge view + low_limit number, though this is not necessary */ + + if (ut_dulint_cmp(limit_trx_no, purge_sys->view->low_limit_no) >= 0) { + limit_trx_no = purge_sys->view->low_limit_no; + limit_undo_no = ut_dulint_zero; + } + + ut_ad((ut_dulint_cmp(limit_trx_no, + purge_sys->view->low_limit_no) <= 0)); + + rseg = UT_LIST_GET_FIRST(trx_sys->rseg_list); + + while (rseg) { + trx_purge_truncate_rseg_history(rseg, limit_trx_no, + limit_undo_no); + rseg = UT_LIST_GET_NEXT(rseg_list, rseg); + } +} + +/************************************************************************ +Does a truncate if the purge array is empty. NOTE that when this function is +called, the caller must not have any latches on undo log pages! */ +UNIV_INLINE +ibool +trx_purge_truncate_if_arr_empty(void) +/*=================================*/ + /* out: TRUE if array empty */ +{ + ut_ad(mutex_own(&(purge_sys->mutex))); + + if (purge_sys->arr->n_used == 0) { + + trx_purge_truncate_history(); + + return(TRUE); + } + + return(FALSE); +} + +/*************************************************************************** +Updates the last not yet purged history log info in rseg when we have purged +a whole undo log. Advances also purge_sys->purge_trx_no past the purged log. */ +static +void +trx_purge_rseg_get_next_history_log( +/*================================*/ + trx_rseg_t* rseg) /* in: rollback segment */ +{ + page_t* undo_page; + trx_ulogf_t* log_hdr; + trx_usegf_t* seg_hdr; + fil_addr_t prev_log_addr; + dulint trx_no; + ibool del_marks; + mtr_t mtr; + + ut_ad(mutex_own(&(purge_sys->mutex))); + + mutex_enter(&(rseg->mutex)); + + ut_a(rseg->last_page_no != FIL_NULL); + + purge_sys->purge_trx_no = ut_dulint_add(rseg->last_trx_no, 1); + purge_sys->purge_undo_no = ut_dulint_zero; + purge_sys->next_stored = FALSE; + + mtr_start(&mtr); + + undo_page = trx_undo_page_get_s_latched(rseg->space, rseg->zip_size, + rseg->last_page_no, &mtr); + log_hdr = undo_page + rseg->last_offset; + seg_hdr = undo_page + TRX_UNDO_SEG_HDR; + + /* Increase the purge page count by one for every handled log */ + + purge_sys->n_pages_handled++; + + prev_log_addr = trx_purge_get_log_from_hist( + flst_get_prev_addr(log_hdr + TRX_UNDO_HISTORY_NODE, &mtr)); + if (prev_log_addr.page == FIL_NULL) { + /* No logs left in the history list */ + + rseg->last_page_no = FIL_NULL; + + mutex_exit(&(rseg->mutex)); + mtr_commit(&mtr); + + mutex_enter(&kernel_mutex); + + /* Add debug code to track history list corruption reported + on the MySQL mailing list on Nov 9, 2004. The fut0lst.c + file-based list was corrupt. The prev node pointer was + FIL_NULL, even though the list length was over 8 million nodes! + We assume that purge truncates the history list in moderate + size pieces, and if we here reach the head of the list, the + list cannot be longer than 20 000 undo logs now. */ + + if (trx_sys->rseg_history_len > 20000) { + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: Warning: purge reached the" + " head of the history list,\n" + "InnoDB: but its length is still" + " reported as %lu! Make a detailed bug\n" + "InnoDB: report, and submit it" + " to http://bugs.mysql.com\n", + (ulong) trx_sys->rseg_history_len); + } + + mutex_exit(&kernel_mutex); + + return; + } + + mutex_exit(&(rseg->mutex)); + mtr_commit(&mtr); + + /* Read the trx number and del marks from the previous log header */ + mtr_start(&mtr); + + log_hdr = trx_undo_page_get_s_latched(rseg->space, rseg->zip_size, + prev_log_addr.page, &mtr) + + prev_log_addr.boffset; + + trx_no = mach_read_from_8(log_hdr + TRX_UNDO_TRX_NO); + + del_marks = mach_read_from_2(log_hdr + TRX_UNDO_DEL_MARKS); + + mtr_commit(&mtr); + + mutex_enter(&(rseg->mutex)); + + rseg->last_page_no = prev_log_addr.page; + rseg->last_offset = prev_log_addr.boffset; + rseg->last_trx_no = trx_no; + rseg->last_del_marks = del_marks; + + mutex_exit(&(rseg->mutex)); +} + +/*************************************************************************** +Chooses the next undo log to purge and updates the info in purge_sys. This +function is used to initialize purge_sys when the next record to purge is +not known, and also to update the purge system info on the next record when +purge has handled the whole undo log for a transaction. */ +static +void +trx_purge_choose_next_log(void) +/*===========================*/ +{ + trx_undo_rec_t* rec; + trx_rseg_t* rseg; + trx_rseg_t* min_rseg; + dulint min_trx_no; + ulint space = 0; /* remove warning (??? bug ???) */ + ulint zip_size = 0; + ulint page_no = 0; /* remove warning (??? bug ???) */ + ulint offset = 0; /* remove warning (??? bug ???) */ + mtr_t mtr; + + ut_ad(mutex_own(&(purge_sys->mutex))); + ut_ad(purge_sys->next_stored == FALSE); + + rseg = UT_LIST_GET_FIRST(trx_sys->rseg_list); + + min_trx_no = ut_dulint_max; + + min_rseg = NULL; + + while (rseg) { + mutex_enter(&(rseg->mutex)); + + if (rseg->last_page_no != FIL_NULL) { + + if ((min_rseg == NULL) + || (ut_dulint_cmp(min_trx_no, + rseg->last_trx_no) > 0)) { + + min_rseg = rseg; + min_trx_no = rseg->last_trx_no; + space = rseg->space; + zip_size = rseg->zip_size; + ut_a(space == 0); /* We assume in purge of + externally stored fields + that space id == 0 */ + page_no = rseg->last_page_no; + offset = rseg->last_offset; + } + } + + mutex_exit(&(rseg->mutex)); + + rseg = UT_LIST_GET_NEXT(rseg_list, rseg); + } + + if (min_rseg == NULL) { + + return; + } + + mtr_start(&mtr); + + if (!min_rseg->last_del_marks) { + /* No need to purge this log */ + + rec = &trx_purge_dummy_rec; + } else { + rec = trx_undo_get_first_rec(space, zip_size, page_no, offset, + RW_S_LATCH, &mtr); + if (rec == NULL) { + /* Undo log empty */ + + rec = &trx_purge_dummy_rec; + } + } + + purge_sys->next_stored = TRUE; + purge_sys->rseg = min_rseg; + + purge_sys->hdr_page_no = page_no; + purge_sys->hdr_offset = offset; + + purge_sys->purge_trx_no = min_trx_no; + + if (rec == &trx_purge_dummy_rec) { + + purge_sys->purge_undo_no = ut_dulint_zero; + purge_sys->page_no = page_no; + purge_sys->offset = 0; + } else { + purge_sys->purge_undo_no = trx_undo_rec_get_undo_no(rec); + + purge_sys->page_no = page_get_page_no(page_align(rec)); + purge_sys->offset = page_offset(rec); + } + + mtr_commit(&mtr); +} + +/*************************************************************************** +Gets the next record to purge and updates the info in the purge system. */ +static +trx_undo_rec_t* +trx_purge_get_next_rec( +/*===================*/ + /* out: copy of an undo log record or + pointer to the dummy undo log record */ + mem_heap_t* heap) /* in: memory heap where copied */ +{ + trx_undo_rec_t* rec; + trx_undo_rec_t* rec_copy; + trx_undo_rec_t* rec2; + trx_undo_rec_t* next_rec; + page_t* undo_page; + page_t* page; + ulint offset; + ulint page_no; + ulint space; + ulint zip_size; + ulint type; + ulint cmpl_info; + mtr_t mtr; + + ut_ad(mutex_own(&(purge_sys->mutex))); + ut_ad(purge_sys->next_stored); + + space = purge_sys->rseg->space; + zip_size = purge_sys->rseg->zip_size; + page_no = purge_sys->page_no; + offset = purge_sys->offset; + + if (offset == 0) { + /* It is the dummy undo log record, which means that there is + no need to purge this undo log */ + + trx_purge_rseg_get_next_history_log(purge_sys->rseg); + + /* Look for the next undo log and record to purge */ + + trx_purge_choose_next_log(); + + return(&trx_purge_dummy_rec); + } + + mtr_start(&mtr); + + undo_page = trx_undo_page_get_s_latched(space, zip_size, + page_no, &mtr); + rec = undo_page + offset; + + rec2 = rec; + + for (;;) { + /* Try first to find the next record which requires a purge + operation from the same page of the same undo log */ + + next_rec = trx_undo_page_get_next_rec(rec2, + purge_sys->hdr_page_no, + purge_sys->hdr_offset); + if (next_rec == NULL) { + rec2 = trx_undo_get_next_rec( + rec2, purge_sys->hdr_page_no, + purge_sys->hdr_offset, &mtr); + break; + } + + rec2 = next_rec; + + type = trx_undo_rec_get_type(rec2); + + if (type == TRX_UNDO_DEL_MARK_REC) { + + break; + } + + cmpl_info = trx_undo_rec_get_cmpl_info(rec2); + + if (trx_undo_rec_get_extern_storage(rec2)) { + break; + } + + if ((type == TRX_UNDO_UPD_EXIST_REC) + && !(cmpl_info & UPD_NODE_NO_ORD_CHANGE)) { + break; + } + } + + if (rec2 == NULL) { + mtr_commit(&mtr); + + trx_purge_rseg_get_next_history_log(purge_sys->rseg); + + /* Look for the next undo log and record to purge */ + + trx_purge_choose_next_log(); + + mtr_start(&mtr); + + undo_page = trx_undo_page_get_s_latched(space, zip_size, + page_no, &mtr); + + rec = undo_page + offset; + } else { + page = page_align(rec2); + + purge_sys->purge_undo_no = trx_undo_rec_get_undo_no(rec2); + purge_sys->page_no = page_get_page_no(page); + purge_sys->offset = rec2 - page; + + if (undo_page != page) { + /* We advance to a new page of the undo log: */ + purge_sys->n_pages_handled++; + } + } + + rec_copy = trx_undo_rec_copy(rec, heap); + + mtr_commit(&mtr); + + return(rec_copy); +} + +/************************************************************************ +Fetches the next undo log record from the history list to purge. It must be +released with the corresponding release function. */ +UNIV_INTERN +trx_undo_rec_t* +trx_purge_fetch_next_rec( +/*=====================*/ + /* out: copy of an undo log record or + pointer to the dummy undo log record + &trx_purge_dummy_rec, if the whole undo log + can skipped in purge; NULL if none left */ + dulint* roll_ptr,/* out: roll pointer to undo record */ + trx_undo_inf_t** cell, /* out: storage cell for the record in the + purge array */ + mem_heap_t* heap) /* in: memory heap where copied */ +{ + trx_undo_rec_t* undo_rec; + + mutex_enter(&(purge_sys->mutex)); + + if (purge_sys->state == TRX_STOP_PURGE) { + trx_purge_truncate_if_arr_empty(); + + mutex_exit(&(purge_sys->mutex)); + + return(NULL); + } + + if (!purge_sys->next_stored) { + trx_purge_choose_next_log(); + + if (!purge_sys->next_stored) { + purge_sys->state = TRX_STOP_PURGE; + + trx_purge_truncate_if_arr_empty(); + + if (srv_print_thread_releases) { + fprintf(stderr, + "Purge: No logs left in the" + " history list; pages handled %lu\n", + (ulong) purge_sys->n_pages_handled); + } + + mutex_exit(&(purge_sys->mutex)); + + return(NULL); + } + } + + if (purge_sys->n_pages_handled >= purge_sys->handle_limit) { + + purge_sys->state = TRX_STOP_PURGE; + + trx_purge_truncate_if_arr_empty(); + + mutex_exit(&(purge_sys->mutex)); + + return(NULL); + } + + if (ut_dulint_cmp(purge_sys->purge_trx_no, + purge_sys->view->low_limit_no) >= 0) { + purge_sys->state = TRX_STOP_PURGE; + + trx_purge_truncate_if_arr_empty(); + + mutex_exit(&(purge_sys->mutex)); + + return(NULL); + } + + /* fprintf(stderr, "Thread %lu purging trx %lu undo record %lu\n", + os_thread_get_curr_id(), + ut_dulint_get_low(purge_sys->purge_trx_no), + ut_dulint_get_low(purge_sys->purge_undo_no)); */ + + *roll_ptr = trx_undo_build_roll_ptr(FALSE, (purge_sys->rseg)->id, + purge_sys->page_no, + purge_sys->offset); + + *cell = trx_purge_arr_store_info(purge_sys->purge_trx_no, + purge_sys->purge_undo_no); + + ut_ad(ut_dulint_cmp(purge_sys->purge_trx_no, + (purge_sys->view)->low_limit_no) < 0); + + /* The following call will advance the stored values of purge_trx_no + and purge_undo_no, therefore we had to store them first */ + + undo_rec = trx_purge_get_next_rec(heap); + + mutex_exit(&(purge_sys->mutex)); + + return(undo_rec); +} + +/*********************************************************************** +Releases a reserved purge undo record. */ +UNIV_INTERN +void +trx_purge_rec_release( +/*==================*/ + trx_undo_inf_t* cell) /* in: storage cell */ +{ + trx_undo_arr_t* arr; + + mutex_enter(&(purge_sys->mutex)); + + arr = purge_sys->arr; + + trx_purge_arr_remove_info(cell); + + mutex_exit(&(purge_sys->mutex)); +} + +/*********************************************************************** +This function runs a purge batch. */ +UNIV_INTERN +ulint +trx_purge(void) +/*===========*/ + /* out: number of undo log pages handled in + the batch */ +{ + que_thr_t* thr; + /* que_thr_t* thr2; */ + ulint old_pages_handled; + + mutex_enter(&(purge_sys->mutex)); + + if (purge_sys->trx->n_active_thrs > 0) { + + mutex_exit(&(purge_sys->mutex)); + + /* Should not happen */ + + ut_error; + + return(0); + } + + rw_lock_x_lock(&(purge_sys->latch)); + + mutex_enter(&kernel_mutex); + + /* Close and free the old purge view */ + + read_view_close(purge_sys->view); + purge_sys->view = NULL; + mem_heap_empty(purge_sys->heap); + + /* Determine how much data manipulation language (DML) statements + need to be delayed in order to reduce the lagging of the purge + thread. */ + srv_dml_needed_delay = 0; /* in microseconds; default: no delay */ + + /* If we cannot advance the 'purge view' because of an old + 'consistent read view', then the DML statements cannot be delayed. + Also, srv_max_purge_lag <= 0 means 'infinity'. */ + if (srv_max_purge_lag > 0 + && !UT_LIST_GET_LAST(trx_sys->view_list)) { + float ratio = (float) trx_sys->rseg_history_len + / srv_max_purge_lag; + if (ratio > ULINT_MAX / 10000) { + /* Avoid overflow: maximum delay is 4295 seconds */ + srv_dml_needed_delay = ULINT_MAX; + } else if (ratio > 1) { + /* If the history list length exceeds the + innodb_max_purge_lag, the + data manipulation statements are delayed + by at least 5000 microseconds. */ + srv_dml_needed_delay = (ulint) ((ratio - .5) * 10000); + } + } + + purge_sys->view = read_view_oldest_copy_or_open_new(ut_dulint_zero, + purge_sys->heap); + mutex_exit(&kernel_mutex); + + rw_lock_x_unlock(&(purge_sys->latch)); + + purge_sys->state = TRX_PURGE_ON; + + /* Handle at most 20 undo log pages in one purge batch */ + + purge_sys->handle_limit = purge_sys->n_pages_handled + 20; + + old_pages_handled = purge_sys->n_pages_handled; + + mutex_exit(&(purge_sys->mutex)); + + mutex_enter(&kernel_mutex); + + thr = que_fork_start_command(purge_sys->query); + + ut_ad(thr); + + /* thr2 = que_fork_start_command(purge_sys->query); + + ut_ad(thr2); */ + + + mutex_exit(&kernel_mutex); + + /* srv_que_task_enqueue(thr2); */ + + if (srv_print_thread_releases) { + + fputs("Starting purge\n", stderr); + } + + que_run_threads(thr); + + if (srv_print_thread_releases) { + + fprintf(stderr, + "Purge ends; pages handled %lu\n", + (ulong) purge_sys->n_pages_handled); + } + + return(purge_sys->n_pages_handled - old_pages_handled); +} + +/********************************************************************** +Prints information of the purge system to stderr. */ +UNIV_INTERN +void +trx_purge_sys_print(void) +/*=====================*/ +{ + fprintf(stderr, "InnoDB: Purge system view:\n"); + read_view_print(purge_sys->view); + + fprintf(stderr, "InnoDB: Purge trx n:o " TRX_ID_FMT + ", undo n:o " TRX_ID_FMT "\n", + TRX_ID_PREP_PRINTF(purge_sys->purge_trx_no), + TRX_ID_PREP_PRINTF(purge_sys->purge_undo_no)); + fprintf(stderr, + "InnoDB: Purge next stored %lu, page_no %lu, offset %lu,\n" + "InnoDB: Purge hdr_page_no %lu, hdr_offset %lu\n", + (ulong) purge_sys->next_stored, + (ulong) purge_sys->page_no, + (ulong) purge_sys->offset, + (ulong) purge_sys->hdr_page_no, + (ulong) purge_sys->hdr_offset); +} === added file 'storage/xtradb/trx/trx0rec.c' --- a/storage/xtradb/trx/trx0rec.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/trx/trx0rec.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,1607 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Transaction undo log record + +Created 3/26/1996 Heikki Tuuri +*******************************************************/ + +#include "trx0rec.h" + +#ifdef UNIV_NONINL +#include "trx0rec.ic" +#endif + +#include "fsp0fsp.h" +#include "mach0data.h" +#include "trx0rseg.h" +#include "trx0trx.h" +#include "trx0undo.h" +#include "dict0dict.h" +#include "ut0mem.h" +#include "row0ext.h" +#include "row0upd.h" +#include "que0que.h" +#include "trx0purge.h" +#include "row0row.h" + +/*=========== UNDO LOG RECORD CREATION AND DECODING ====================*/ + +/************************************************************************** +Writes the mtr log entry of the inserted undo log record on the undo log +page. */ +UNIV_INLINE +void +trx_undof_page_add_undo_rec_log( +/*============================*/ + page_t* undo_page, /* in: undo log page */ + ulint old_free, /* in: start offset of the inserted entry */ + ulint new_free, /* in: end offset of the entry */ + mtr_t* mtr) /* in: mtr */ +{ + byte* log_ptr; + const byte* log_end; + ulint len; + + log_ptr = mlog_open(mtr, 11 + 13 + MLOG_BUF_MARGIN); + + if (log_ptr == NULL) { + + return; + } + + log_end = &log_ptr[11 + 13 + MLOG_BUF_MARGIN]; + log_ptr = mlog_write_initial_log_record_fast( + undo_page, MLOG_UNDO_INSERT, log_ptr, mtr); + len = new_free - old_free - 4; + + mach_write_to_2(log_ptr, len); + log_ptr += 2; + + if (log_ptr + len <= log_end) { + memcpy(log_ptr, undo_page + old_free + 2, len); + mlog_close(mtr, log_ptr + len); + } else { + mlog_close(mtr, log_ptr); + mlog_catenate_string(mtr, undo_page + old_free + 2, len); + } +} + +/*************************************************************** +Parses a redo log record of adding an undo log record. */ +UNIV_INTERN +byte* +trx_undo_parse_add_undo_rec( +/*========================*/ + /* out: end of log record or NULL */ + byte* ptr, /* in: buffer */ + byte* end_ptr,/* in: buffer end */ + page_t* page) /* in: page or NULL */ +{ + ulint len; + byte* rec; + ulint first_free; + + if (end_ptr < ptr + 2) { + + return(NULL); + } + + len = mach_read_from_2(ptr); + ptr += 2; + + if (end_ptr < ptr + len) { + + return(NULL); + } + + if (page == NULL) { + + return(ptr + len); + } + + first_free = mach_read_from_2(page + TRX_UNDO_PAGE_HDR + + TRX_UNDO_PAGE_FREE); + rec = page + first_free; + + mach_write_to_2(rec, first_free + 4 + len); + mach_write_to_2(rec + 2 + len, first_free); + + mach_write_to_2(page + TRX_UNDO_PAGE_HDR + TRX_UNDO_PAGE_FREE, + first_free + 4 + len); + ut_memcpy(rec + 2, ptr, len); + + return(ptr + len); +} + +/************************************************************************** +Calculates the free space left for extending an undo log record. */ +UNIV_INLINE +ulint +trx_undo_left( +/*==========*/ + /* out: bytes left */ + const page_t* page, /* in: undo log page */ + const byte* ptr) /* in: pointer to page */ +{ + /* The '- 10' is a safety margin, in case we have some small + calculation error below */ + + return(UNIV_PAGE_SIZE - (ptr - page) - 10 - FIL_PAGE_DATA_END); +} + +/************************************************************************** +Set the next and previous pointers in the undo page for the undo record +that was written to ptr. Update the first free value by the number of bytes +written for this undo record.*/ +static +ulint +trx_undo_page_set_next_prev_and_add( +/*================================*/ + /* out: offset of the inserted entry + on the page if succeeded, 0 if fail */ + page_t* undo_page, /* in/out: undo log page */ + byte* ptr, /* in: ptr up to where data has been + written on this undo page. */ + mtr_t* mtr) /* in: mtr */ +{ + ulint first_free; /* offset within undo_page */ + ulint end_of_rec; /* offset within undo_page */ + byte* ptr_to_first_free; + /* pointer within undo_page + that points to the next free + offset value within undo_page.*/ + + ut_ad(ptr > undo_page); + ut_ad(ptr < undo_page + UNIV_PAGE_SIZE); + + if (UNIV_UNLIKELY(trx_undo_left(undo_page, ptr) < 2)) { + + return(0); + } + + ptr_to_first_free = undo_page + TRX_UNDO_PAGE_HDR + TRX_UNDO_PAGE_FREE; + + first_free = mach_read_from_2(ptr_to_first_free); + + /* Write offset of the previous undo log record */ + mach_write_to_2(ptr, first_free); + ptr += 2; + + end_of_rec = ptr - undo_page; + + /* Write offset of the next undo log record */ + mach_write_to_2(undo_page + first_free, end_of_rec); + + /* Update the offset to first free undo record */ + mach_write_to_2(ptr_to_first_free, end_of_rec); + + /* Write this log entry to the UNDO log */ + trx_undof_page_add_undo_rec_log(undo_page, first_free, + end_of_rec, mtr); + + return(first_free); +} + +/************************************************************************** +Reports in the undo log of an insert of a clustered index record. */ +static +ulint +trx_undo_page_report_insert( +/*========================*/ + /* out: offset of the inserted entry + on the page if succeed, 0 if fail */ + page_t* undo_page, /* in: undo log page */ + trx_t* trx, /* in: transaction */ + dict_index_t* index, /* in: clustered index */ + const dtuple_t* clust_entry, /* in: index entry which will be + inserted to the clustered index */ + mtr_t* mtr) /* in: mtr */ +{ + ulint first_free; + byte* ptr; + ulint i; + + ut_ad(dict_index_is_clust(index)); + ut_ad(mach_read_from_2(undo_page + TRX_UNDO_PAGE_HDR + + TRX_UNDO_PAGE_TYPE) == TRX_UNDO_INSERT); + + first_free = mach_read_from_2(undo_page + TRX_UNDO_PAGE_HDR + + TRX_UNDO_PAGE_FREE); + ptr = undo_page + first_free; + + ut_ad(first_free <= UNIV_PAGE_SIZE); + + if (trx_undo_left(undo_page, ptr) < 2 + 1 + 11 + 11) { + + /* Not enough space for writing the general parameters */ + + return(0); + } + + /* Reserve 2 bytes for the pointer to the next undo log record */ + ptr += 2; + + /* Store first some general parameters to the undo log */ + *ptr++ = TRX_UNDO_INSERT_REC; + ptr += mach_dulint_write_much_compressed(ptr, trx->undo_no); + ptr += mach_dulint_write_much_compressed(ptr, index->table->id); + /*----------------------------------------*/ + /* Store then the fields required to uniquely determine the record + to be inserted in the clustered index */ + + for (i = 0; i < dict_index_get_n_unique(index); i++) { + + const dfield_t* field = dtuple_get_nth_field(clust_entry, i); + ulint flen = dfield_get_len(field); + + if (trx_undo_left(undo_page, ptr) < 5) { + + return(0); + } + + ptr += mach_write_compressed(ptr, flen); + + if (flen != UNIV_SQL_NULL) { + if (trx_undo_left(undo_page, ptr) < flen) { + + return(0); + } + + ut_memcpy(ptr, dfield_get_data(field), flen); + ptr += flen; + } + } + + return(trx_undo_page_set_next_prev_and_add(undo_page, ptr, mtr)); +} + +/************************************************************************** +Reads from an undo log record the general parameters. */ +UNIV_INTERN +byte* +trx_undo_rec_get_pars( +/*==================*/ + /* out: remaining part of undo log + record after reading these values */ + trx_undo_rec_t* undo_rec, /* in: undo log record */ + ulint* type, /* out: undo record type: + TRX_UNDO_INSERT_REC, ... */ + ulint* cmpl_info, /* out: compiler info, relevant only + for update type records */ + ibool* updated_extern, /* out: TRUE if we updated an + externally stored fild */ + dulint* undo_no, /* out: undo log record number */ + dulint* table_id) /* out: table id */ +{ + byte* ptr; + ulint type_cmpl; + + ptr = undo_rec + 2; + + type_cmpl = mach_read_from_1(ptr); + ptr++; + + if (type_cmpl & TRX_UNDO_UPD_EXTERN) { + *updated_extern = TRUE; + type_cmpl -= TRX_UNDO_UPD_EXTERN; + } else { + *updated_extern = FALSE; + } + + *type = type_cmpl & (TRX_UNDO_CMPL_INFO_MULT - 1); + *cmpl_info = type_cmpl / TRX_UNDO_CMPL_INFO_MULT; + + *undo_no = mach_dulint_read_much_compressed(ptr); + ptr += mach_dulint_get_much_compressed_size(*undo_no); + + *table_id = mach_dulint_read_much_compressed(ptr); + ptr += mach_dulint_get_much_compressed_size(*table_id); + + return(ptr); +} + +/************************************************************************** +Reads from an undo log record a stored column value. */ +static +byte* +trx_undo_rec_get_col_val( +/*=====================*/ + /* out: remaining part of undo log record after + reading these values */ + byte* ptr, /* in: pointer to remaining part of undo log record */ + byte** field, /* out: pointer to stored field */ + ulint* len, /* out: length of the field, or UNIV_SQL_NULL */ + ulint* orig_len)/* out: original length of the locally + stored part of an externally stored column, or 0 */ +{ + *len = mach_read_compressed(ptr); + ptr += mach_get_compressed_size(*len); + + *orig_len = 0; + + switch (*len) { + case UNIV_SQL_NULL: + *field = NULL; + break; + case UNIV_EXTERN_STORAGE_FIELD: + *orig_len = mach_read_compressed(ptr); + ptr += mach_get_compressed_size(*orig_len); + *len = mach_read_compressed(ptr); + ptr += mach_get_compressed_size(*len); + *field = ptr; + ptr += *len; + + ut_ad(*orig_len >= BTR_EXTERN_FIELD_REF_SIZE); + ut_ad(*len > *orig_len); + ut_ad(*len >= REC_MAX_INDEX_COL_LEN + + BTR_EXTERN_FIELD_REF_SIZE); + + *len += UNIV_EXTERN_STORAGE_FIELD; + break; + default: + *field = ptr; + if (*len >= UNIV_EXTERN_STORAGE_FIELD) { + ptr += *len - UNIV_EXTERN_STORAGE_FIELD; + } else { + ptr += *len; + } + } + + return(ptr); +} + +/*********************************************************************** +Builds a row reference from an undo log record. */ +UNIV_INTERN +byte* +trx_undo_rec_get_row_ref( +/*=====================*/ + /* out: pointer to remaining part of undo + record */ + byte* ptr, /* in: remaining part of a copy of an undo log + record, at the start of the row reference; + NOTE that this copy of the undo log record must + be preserved as long as the row reference is + used, as we do NOT copy the data in the + record! */ + dict_index_t* index, /* in: clustered index */ + dtuple_t** ref, /* out, own: row reference */ + mem_heap_t* heap) /* in: memory heap from which the memory + needed is allocated */ +{ + ulint ref_len; + ulint i; + + ut_ad(index && ptr && ref && heap); + ut_a(dict_index_is_clust(index)); + + ref_len = dict_index_get_n_unique(index); + + *ref = dtuple_create(heap, ref_len); + + dict_index_copy_types(*ref, index, ref_len); + + for (i = 0; i < ref_len; i++) { + dfield_t* dfield; + byte* field; + ulint len; + ulint orig_len; + + dfield = dtuple_get_nth_field(*ref, i); + + ptr = trx_undo_rec_get_col_val(ptr, &field, &len, &orig_len); + + dfield_set_data(dfield, field, len); + } + + return(ptr); +} + +/*********************************************************************** +Skips a row reference from an undo log record. */ +UNIV_INTERN +byte* +trx_undo_rec_skip_row_ref( +/*======================*/ + /* out: pointer to remaining part of undo + record */ + byte* ptr, /* in: remaining part in update undo log + record, at the start of the row reference */ + dict_index_t* index) /* in: clustered index */ +{ + ulint ref_len; + ulint i; + + ut_ad(index && ptr); + ut_a(dict_index_is_clust(index)); + + ref_len = dict_index_get_n_unique(index); + + for (i = 0; i < ref_len; i++) { + byte* field; + ulint len; + ulint orig_len; + + ptr = trx_undo_rec_get_col_val(ptr, &field, &len, &orig_len); + } + + return(ptr); +} + +/************************************************************************** +Fetch a prefix of an externally stored column, for writing to the undo log +of an update or delete marking of a clustered index record. */ +static +byte* +trx_undo_page_fetch_ext( +/*====================*/ + /* out: ext_buf */ + byte* ext_buf, /* in: a buffer of + REC_MAX_INDEX_COL_LEN + + BTR_EXTERN_FIELD_REF_SIZE */ + ulint zip_size, /* compressed page size in bytes, + or 0 for uncompressed BLOB */ + const byte* field, /* in: an externally stored column */ + ulint* len) /* in: length of field; + out: used length of ext_buf */ +{ + /* Fetch the BLOB. */ + ulint ext_len = btr_copy_externally_stored_field_prefix( + ext_buf, REC_MAX_INDEX_COL_LEN, zip_size, field, *len); + /* BLOBs should always be nonempty. */ + ut_a(ext_len); + /* Append the BLOB pointer to the prefix. */ + memcpy(ext_buf + ext_len, + field + *len - BTR_EXTERN_FIELD_REF_SIZE, + BTR_EXTERN_FIELD_REF_SIZE); + *len = ext_len + BTR_EXTERN_FIELD_REF_SIZE; + return(ext_buf); +} + +/************************************************************************** +Writes to the undo log a prefix of an externally stored column. */ +static +byte* +trx_undo_page_report_modify_ext( +/*============================*/ + /* out: undo log position */ + byte* ptr, /* in: undo log position, + at least 15 bytes must be available */ + byte* ext_buf, /* in: a buffer of + REC_MAX_INDEX_COL_LEN + + BTR_EXTERN_FIELD_REF_SIZE, + or NULL when should not fetch + a longer prefix */ + ulint zip_size, /* compressed page size in bytes, + or 0 for uncompressed BLOB */ + const byte** field, /* in/out: the locally stored part of + the externally stored column */ + ulint* len) /* in/out: length of field, in bytes */ +{ + if (ext_buf) { + /* If an ordering column is externally stored, we will + have to store a longer prefix of the field. In this + case, write to the log a marker followed by the + original length and the real length of the field. */ + ptr += mach_write_compressed(ptr, UNIV_EXTERN_STORAGE_FIELD); + + ptr += mach_write_compressed(ptr, *len); + + *field = trx_undo_page_fetch_ext(ext_buf, zip_size, + *field, len); + + ptr += mach_write_compressed(ptr, *len); + } else { + ptr += mach_write_compressed(ptr, UNIV_EXTERN_STORAGE_FIELD + + *len); + } + + return(ptr); +} + +/************************************************************************** +Reports in the undo log of an update or delete marking of a clustered index +record. */ +static +ulint +trx_undo_page_report_modify( +/*========================*/ + /* out: byte offset of the inserted + undo log entry on the page if succeed, + 0 if fail */ + page_t* undo_page, /* in: undo log page */ + trx_t* trx, /* in: transaction */ + dict_index_t* index, /* in: clustered index where update or + delete marking is done */ + const rec_t* rec, /* in: clustered index record which + has NOT yet been modified */ + const ulint* offsets, /* in: rec_get_offsets(rec, index) */ + const upd_t* update, /* in: update vector which tells the + columns to be updated; in the case of + a delete, this should be set to NULL */ + ulint cmpl_info, /* in: compiler info on secondary + index updates */ + mtr_t* mtr) /* in: mtr */ +{ + dict_table_t* table; + ulint first_free; + byte* ptr; + const byte* field; + ulint flen; + ulint col_no; + ulint type_cmpl; + byte* type_cmpl_ptr; + ulint i; + dulint trx_id; + ibool ignore_prefix = FALSE; + byte ext_buf[REC_MAX_INDEX_COL_LEN + + BTR_EXTERN_FIELD_REF_SIZE]; + + ut_a(dict_index_is_clust(index)); + ut_ad(rec_offs_validate(rec, index, offsets)); + ut_ad(mach_read_from_2(undo_page + TRX_UNDO_PAGE_HDR + + TRX_UNDO_PAGE_TYPE) == TRX_UNDO_UPDATE); + table = index->table; + + first_free = mach_read_from_2(undo_page + TRX_UNDO_PAGE_HDR + + TRX_UNDO_PAGE_FREE); + ptr = undo_page + first_free; + + ut_ad(first_free <= UNIV_PAGE_SIZE); + + if (trx_undo_left(undo_page, ptr) < 50) { + + /* NOTE: the value 50 must be big enough so that the general + fields written below fit on the undo log page */ + + return(0); + } + + /* Reserve 2 bytes for the pointer to the next undo log record */ + ptr += 2; + + /* Store first some general parameters to the undo log */ + + if (!update) { + type_cmpl = TRX_UNDO_DEL_MARK_REC; + } else if (rec_get_deleted_flag(rec, dict_table_is_comp(table))) { + type_cmpl = TRX_UNDO_UPD_DEL_REC; + /* We are about to update a delete marked record. + We don't typically need the prefix in this case unless + the delete marking is done by the same transaction + (which we check below). */ + ignore_prefix = TRUE; + } else { + type_cmpl = TRX_UNDO_UPD_EXIST_REC; + } + + type_cmpl |= cmpl_info * TRX_UNDO_CMPL_INFO_MULT; + type_cmpl_ptr = ptr; + + *ptr++ = (byte) type_cmpl; + ptr += mach_dulint_write_much_compressed(ptr, trx->undo_no); + + ptr += mach_dulint_write_much_compressed(ptr, table->id); + + /*----------------------------------------*/ + /* Store the state of the info bits */ + + *ptr++ = (byte) rec_get_info_bits(rec, dict_table_is_comp(table)); + + /* Store the values of the system columns */ + field = rec_get_nth_field(rec, offsets, + dict_index_get_sys_col_pos( + index, DATA_TRX_ID), &flen); + ut_ad(flen == DATA_TRX_ID_LEN); + + trx_id = trx_read_trx_id(field); + + /* If it is an update of a delete marked record, then we are + allowed to ignore blob prefixes if the delete marking was done + by some other trx as it must have committed by now for us to + allow an over-write. */ + if (ignore_prefix) { + ignore_prefix = ut_dulint_cmp(trx_id, trx->id) != 0; + } + ptr += mach_dulint_write_compressed(ptr, trx_id); + + field = rec_get_nth_field(rec, offsets, + dict_index_get_sys_col_pos( + index, DATA_ROLL_PTR), &flen); + ut_ad(flen == DATA_ROLL_PTR_LEN); + + ptr += mach_dulint_write_compressed(ptr, trx_read_roll_ptr(field)); + + /*----------------------------------------*/ + /* Store then the fields required to uniquely determine the + record which will be modified in the clustered index */ + + for (i = 0; i < dict_index_get_n_unique(index); i++) { + + field = rec_get_nth_field(rec, offsets, i, &flen); + + /* The ordering columns must not be stored externally. */ + ut_ad(!rec_offs_nth_extern(offsets, i)); + ut_ad(dict_index_get_nth_col(index, i)->ord_part); + + if (trx_undo_left(undo_page, ptr) < 5) { + + return(0); + } + + ptr += mach_write_compressed(ptr, flen); + + if (flen != UNIV_SQL_NULL) { + if (trx_undo_left(undo_page, ptr) < flen) { + + return(0); + } + + ut_memcpy(ptr, field, flen); + ptr += flen; + } + } + + /*----------------------------------------*/ + /* Save to the undo log the old values of the columns to be updated. */ + + if (update) { + if (trx_undo_left(undo_page, ptr) < 5) { + + return(0); + } + + ptr += mach_write_compressed(ptr, upd_get_n_fields(update)); + + for (i = 0; i < upd_get_n_fields(update); i++) { + + ulint pos = upd_get_nth_field(update, i)->field_no; + + /* Write field number to undo log */ + if (trx_undo_left(undo_page, ptr) < 5) { + + return(0); + } + + ptr += mach_write_compressed(ptr, pos); + + /* Save the old value of field */ + field = rec_get_nth_field(rec, offsets, pos, &flen); + + if (trx_undo_left(undo_page, ptr) < 15) { + + return(0); + } + + if (rec_offs_nth_extern(offsets, pos)) { + ptr = trx_undo_page_report_modify_ext( + ptr, + dict_index_get_nth_col(index, pos) + ->ord_part + && !ignore_prefix + && flen < REC_MAX_INDEX_COL_LEN + ? ext_buf : NULL, + dict_table_zip_size(table), + &field, &flen); + + /* Notify purge that it eventually has to + free the old externally stored field */ + + trx->update_undo->del_marks = TRUE; + + *type_cmpl_ptr |= TRX_UNDO_UPD_EXTERN; + } else { + ptr += mach_write_compressed(ptr, flen); + } + + if (flen != UNIV_SQL_NULL) { + if (trx_undo_left(undo_page, ptr) < flen) { + + return(0); + } + + ut_memcpy(ptr, field, flen); + ptr += flen; + } + } + } + + /*----------------------------------------*/ + /* In the case of a delete marking, and also in the case of an update + where any ordering field of any index changes, store the values of all + columns which occur as ordering fields in any index. This info is used + in the purge of old versions where we use it to build and search the + delete marked index records, to look if we can remove them from the + index tree. Note that starting from 4.0.14 also externally stored + fields can be ordering in some index. Starting from 5.2, we no longer + store REC_MAX_INDEX_COL_LEN first bytes to the undo log record, + but we can construct the column prefix fields in the index by + fetching the first page of the BLOB that is pointed to by the + clustered index. This works also in crash recovery, because all pages + (including BLOBs) are recovered before anything is rolled back. */ + + if (!update || !(cmpl_info & UPD_NODE_NO_ORD_CHANGE)) { + byte* old_ptr = ptr; + + trx->update_undo->del_marks = TRUE; + + if (trx_undo_left(undo_page, ptr) < 5) { + + return(0); + } + + /* Reserve 2 bytes to write the number of bytes the stored + fields take in this undo record */ + + ptr += 2; + + for (col_no = 0; col_no < dict_table_get_n_cols(table); + col_no++) { + + const dict_col_t* col + = dict_table_get_nth_col(table, col_no); + + if (col->ord_part) { + ulint pos; + + /* Write field number to undo log */ + if (trx_undo_left(undo_page, ptr) < 5 + 15) { + + return(0); + } + + pos = dict_index_get_nth_col_pos(index, + col_no); + ptr += mach_write_compressed(ptr, pos); + + /* Save the old value of field */ + field = rec_get_nth_field(rec, offsets, pos, + &flen); + + if (rec_offs_nth_extern(offsets, pos)) { + ptr = trx_undo_page_report_modify_ext( + ptr, + flen < REC_MAX_INDEX_COL_LEN + && !ignore_prefix + ? ext_buf : NULL, + dict_table_zip_size(table), + &field, &flen); + } else { + ptr += mach_write_compressed( + ptr, flen); + } + + if (flen != UNIV_SQL_NULL) { + if (trx_undo_left(undo_page, ptr) + < flen) { + + return(0); + } + + ut_memcpy(ptr, field, flen); + ptr += flen; + } + } + } + + mach_write_to_2(old_ptr, ptr - old_ptr); + } + + /*----------------------------------------*/ + /* Write pointers to the previous and the next undo log records */ + if (trx_undo_left(undo_page, ptr) < 2) { + + return(0); + } + + mach_write_to_2(ptr, first_free); + ptr += 2; + mach_write_to_2(undo_page + first_free, ptr - undo_page); + + mach_write_to_2(undo_page + TRX_UNDO_PAGE_HDR + TRX_UNDO_PAGE_FREE, + ptr - undo_page); + + /* Write to the REDO log about this change in the UNDO log */ + + trx_undof_page_add_undo_rec_log(undo_page, first_free, + ptr - undo_page, mtr); + return(first_free); +} + +/************************************************************************** +Reads from an undo log update record the system field values of the old +version. */ +UNIV_INTERN +byte* +trx_undo_update_rec_get_sys_cols( +/*=============================*/ + /* out: remaining part of undo log + record after reading these values */ + byte* ptr, /* in: remaining part of undo log + record after reading general + parameters */ + dulint* trx_id, /* out: trx id */ + dulint* roll_ptr, /* out: roll ptr */ + ulint* info_bits) /* out: info bits state */ +{ + /* Read the state of the info bits */ + *info_bits = mach_read_from_1(ptr); + ptr += 1; + + /* Read the values of the system columns */ + + *trx_id = mach_dulint_read_compressed(ptr); + ptr += mach_dulint_get_compressed_size(*trx_id); + + *roll_ptr = mach_dulint_read_compressed(ptr); + ptr += mach_dulint_get_compressed_size(*roll_ptr); + + return(ptr); +} + +/************************************************************************** +Reads from an update undo log record the number of updated fields. */ +UNIV_INLINE +byte* +trx_undo_update_rec_get_n_upd_fields( +/*=================================*/ + /* out: remaining part of undo log record after + reading this value */ + byte* ptr, /* in: pointer to remaining part of undo log record */ + ulint* n) /* out: number of fields */ +{ + *n = mach_read_compressed(ptr); + ptr += mach_get_compressed_size(*n); + + return(ptr); +} + +/************************************************************************** +Reads from an update undo log record a stored field number. */ +UNIV_INLINE +byte* +trx_undo_update_rec_get_field_no( +/*=============================*/ + /* out: remaining part of undo log record after + reading this value */ + byte* ptr, /* in: pointer to remaining part of undo log record */ + ulint* field_no)/* out: field number */ +{ + *field_no = mach_read_compressed(ptr); + ptr += mach_get_compressed_size(*field_no); + + return(ptr); +} + +/*********************************************************************** +Builds an update vector based on a remaining part of an undo log record. */ +UNIV_INTERN +byte* +trx_undo_update_rec_get_update( +/*===========================*/ + /* out: remaining part of the record, + NULL if an error detected, which means that + the record is corrupted */ + byte* ptr, /* in: remaining part in update undo log + record, after reading the row reference + NOTE that this copy of the undo log record must + be preserved as long as the update vector is + used, as we do NOT copy the data in the + record! */ + dict_index_t* index, /* in: clustered index */ + ulint type, /* in: TRX_UNDO_UPD_EXIST_REC, + TRX_UNDO_UPD_DEL_REC, or + TRX_UNDO_DEL_MARK_REC; in the last case, + only trx id and roll ptr fields are added to + the update vector */ + dulint trx_id, /* in: transaction id from this undo record */ + dulint roll_ptr,/* in: roll pointer from this undo record */ + ulint info_bits,/* in: info bits from this undo record */ + trx_t* trx, /* in: transaction */ + mem_heap_t* heap, /* in: memory heap from which the memory + needed is allocated */ + upd_t** upd) /* out, own: update vector */ +{ + upd_field_t* upd_field; + upd_t* update; + ulint n_fields; + byte* buf; + ulint i; + + ut_a(dict_index_is_clust(index)); + + if (type != TRX_UNDO_DEL_MARK_REC) { + ptr = trx_undo_update_rec_get_n_upd_fields(ptr, &n_fields); + } else { + n_fields = 0; + } + + update = upd_create(n_fields + 2, heap); + + update->info_bits = info_bits; + + /* Store first trx id and roll ptr to update vector */ + + upd_field = upd_get_nth_field(update, n_fields); + buf = mem_heap_alloc(heap, DATA_TRX_ID_LEN); + trx_write_trx_id(buf, trx_id); + + upd_field_set_field_no(upd_field, + dict_index_get_sys_col_pos(index, DATA_TRX_ID), + index, trx); + dfield_set_data(&(upd_field->new_val), buf, DATA_TRX_ID_LEN); + + upd_field = upd_get_nth_field(update, n_fields + 1); + buf = mem_heap_alloc(heap, DATA_ROLL_PTR_LEN); + trx_write_roll_ptr(buf, roll_ptr); + + upd_field_set_field_no( + upd_field, dict_index_get_sys_col_pos(index, DATA_ROLL_PTR), + index, trx); + dfield_set_data(&(upd_field->new_val), buf, DATA_ROLL_PTR_LEN); + + /* Store then the updated ordinary columns to the update vector */ + + for (i = 0; i < n_fields; i++) { + + byte* field; + ulint len; + ulint field_no; + ulint orig_len; + + ptr = trx_undo_update_rec_get_field_no(ptr, &field_no); + + if (field_no >= dict_index_get_n_fields(index)) { + fprintf(stderr, + "InnoDB: Error: trying to access" + " update undo rec field %lu in ", + (ulong) field_no); + dict_index_name_print(stderr, trx, index); + fprintf(stderr, "\n" + "InnoDB: but index has only %lu fields\n" + "InnoDB: Submit a detailed bug report" + " to http://bugs.mysql.com\n" + "InnoDB: Run also CHECK TABLE ", + (ulong) dict_index_get_n_fields(index)); + ut_print_name(stderr, trx, TRUE, index->table_name); + fprintf(stderr, "\n" + "InnoDB: n_fields = %lu, i = %lu, ptr %p\n", + (ulong) n_fields, (ulong) i, ptr); + return(NULL); + } + + upd_field = upd_get_nth_field(update, i); + + upd_field_set_field_no(upd_field, field_no, index, trx); + + ptr = trx_undo_rec_get_col_val(ptr, &field, &len, &orig_len); + + upd_field->orig_len = orig_len; + + if (len == UNIV_SQL_NULL) { + dfield_set_null(&upd_field->new_val); + } else if (len < UNIV_EXTERN_STORAGE_FIELD) { + dfield_set_data(&upd_field->new_val, field, len); + } else { + len -= UNIV_EXTERN_STORAGE_FIELD; + + dfield_set_data(&upd_field->new_val, field, len); + dfield_set_ext(&upd_field->new_val); + } + } + + *upd = update; + + return(ptr); +} + +/*********************************************************************** +Builds a partial row from an update undo log record. It contains the +columns which occur as ordering in any index of the table. */ +UNIV_INTERN +byte* +trx_undo_rec_get_partial_row( +/*=========================*/ + /* out: pointer to remaining part of undo + record */ + byte* ptr, /* in: remaining part in update undo log + record of a suitable type, at the start of + the stored index columns; + NOTE that this copy of the undo log record must + be preserved as long as the partial row is + used, as we do NOT copy the data in the + record! */ + dict_index_t* index, /* in: clustered index */ + dtuple_t** row, /* out, own: partial row */ + ibool ignore_prefix, /* in: flag to indicate if we + expect blob prefixes in undo. Used + only in the assertion. */ + mem_heap_t* heap) /* in: memory heap from which the memory + needed is allocated */ +{ + const byte* end_ptr; + ulint row_len; + + ut_ad(index); + ut_ad(ptr); + ut_ad(row); + ut_ad(heap); + ut_ad(dict_index_is_clust(index)); + + row_len = dict_table_get_n_cols(index->table); + + *row = dtuple_create(heap, row_len); + + dict_table_copy_types(*row, index->table); + + end_ptr = ptr + mach_read_from_2(ptr); + ptr += 2; + + while (ptr != end_ptr) { + dfield_t* dfield; + byte* field; + ulint field_no; + const dict_col_t* col; + ulint col_no; + ulint len; + ulint orig_len; + + ptr = trx_undo_update_rec_get_field_no(ptr, &field_no); + + col = dict_index_get_nth_col(index, field_no); + col_no = dict_col_get_no(col); + + ptr = trx_undo_rec_get_col_val(ptr, &field, &len, &orig_len); + + dfield = dtuple_get_nth_field(*row, col_no); + + dfield_set_data(dfield, field, len); + + if (len != UNIV_SQL_NULL + && len >= UNIV_EXTERN_STORAGE_FIELD) { + dfield_set_len(dfield, + len - UNIV_EXTERN_STORAGE_FIELD); + dfield_set_ext(dfield); + /* If the prefix of this column is indexed, + ensure that enough prefix is stored in the + undo log record. */ + ut_a(ignore_prefix + || !col->ord_part + || dfield_get_len(dfield) + >= REC_MAX_INDEX_COL_LEN + + BTR_EXTERN_FIELD_REF_SIZE); + } + } + + return(ptr); +} + +/*************************************************************************** +Erases the unused undo log page end. */ +static +void +trx_undo_erase_page_end( +/*====================*/ + page_t* undo_page, /* in: undo page whose end to erase */ + mtr_t* mtr) /* in: mtr */ +{ + ulint first_free; + + first_free = mach_read_from_2(undo_page + TRX_UNDO_PAGE_HDR + + TRX_UNDO_PAGE_FREE); + memset(undo_page + first_free, 0xff, + (UNIV_PAGE_SIZE - FIL_PAGE_DATA_END) - first_free); + + mlog_write_initial_log_record(undo_page, MLOG_UNDO_ERASE_END, mtr); +} + +/*************************************************************** +Parses a redo log record of erasing of an undo page end. */ +UNIV_INTERN +byte* +trx_undo_parse_erase_page_end( +/*==========================*/ + /* out: end of log record or NULL */ + byte* ptr, /* in: buffer */ + byte* end_ptr __attribute__((unused)), /* in: buffer end */ + page_t* page, /* in: page or NULL */ + mtr_t* mtr) /* in: mtr or NULL */ +{ + ut_ad(ptr && end_ptr); + + if (page == NULL) { + + return(ptr); + } + + trx_undo_erase_page_end(page, mtr); + + return(ptr); +} + +/*************************************************************************** +Writes information to an undo log about an insert, update, or a delete marking +of a clustered index record. This information is used in a rollback of the +transaction and in consistent reads that must look to the history of this +transaction. */ +UNIV_INTERN +ulint +trx_undo_report_row_operation( +/*==========================*/ + /* out: DB_SUCCESS or error code */ + ulint flags, /* in: if BTR_NO_UNDO_LOG_FLAG bit is + set, does nothing */ + ulint op_type, /* in: TRX_UNDO_INSERT_OP or + TRX_UNDO_MODIFY_OP */ + que_thr_t* thr, /* in: query thread */ + dict_index_t* index, /* in: clustered index */ + const dtuple_t* clust_entry, /* in: in the case of an insert, + index entry to insert into the + clustered index, otherwise NULL */ + const upd_t* update, /* in: in the case of an update, + the update vector, otherwise NULL */ + ulint cmpl_info, /* in: compiler info on secondary + index updates */ + const rec_t* rec, /* in: in case of an update or delete + marking, the record in the clustered + index, otherwise NULL */ + dulint* roll_ptr) /* out: rollback pointer to the + inserted undo log record, + ut_dulint_zero if BTR_NO_UNDO_LOG + flag was specified */ +{ + trx_t* trx; + trx_undo_t* undo; + ulint page_no; + trx_rseg_t* rseg; + mtr_t mtr; + ulint err = DB_SUCCESS; + mem_heap_t* heap = NULL; + ulint offsets_[REC_OFFS_NORMAL_SIZE]; + ulint* offsets = offsets_; + rec_offs_init(offsets_); + + ut_a(dict_index_is_clust(index)); + + if (flags & BTR_NO_UNDO_LOG_FLAG) { + + *roll_ptr = ut_dulint_zero; + + return(DB_SUCCESS); + } + + ut_ad(thr); + ut_ad((op_type != TRX_UNDO_INSERT_OP) + || (clust_entry && !update && !rec)); + + trx = thr_get_trx(thr); + rseg = trx->rseg; + + mutex_enter(&(trx->undo_mutex)); + + /* If the undo log is not assigned yet, assign one */ + + if (op_type == TRX_UNDO_INSERT_OP) { + + if (trx->insert_undo == NULL) { + + err = trx_undo_assign_undo(trx, TRX_UNDO_INSERT); + } + + undo = trx->insert_undo; + + if (UNIV_UNLIKELY(!undo)) { + /* Did not succeed */ + mutex_exit(&(trx->undo_mutex)); + + return(err); + } + } else { + ut_ad(op_type == TRX_UNDO_MODIFY_OP); + + if (trx->update_undo == NULL) { + + err = trx_undo_assign_undo(trx, TRX_UNDO_UPDATE); + + } + + undo = trx->update_undo; + + if (UNIV_UNLIKELY(!undo)) { + /* Did not succeed */ + mutex_exit(&(trx->undo_mutex)); + return(err); + } + + offsets = rec_get_offsets(rec, index, offsets, + ULINT_UNDEFINED, &heap); + } + + page_no = undo->last_page_no; + + mtr_start(&mtr); + + for (;;) { + buf_block_t* undo_block; + page_t* undo_page; + ulint offset; + + undo_block = buf_page_get_gen(undo->space, undo->zip_size, + page_no, RW_X_LATCH, + undo->guess_block, BUF_GET, + __FILE__, __LINE__, &mtr); + buf_block_dbg_add_level(undo_block, SYNC_TRX_UNDO_PAGE); + + undo_page = buf_block_get_frame(undo_block); + + if (op_type == TRX_UNDO_INSERT_OP) { + offset = trx_undo_page_report_insert( + undo_page, trx, index, clust_entry, &mtr); + } else { + offset = trx_undo_page_report_modify( + undo_page, trx, index, rec, offsets, update, + cmpl_info, &mtr); + } + + if (UNIV_UNLIKELY(offset == 0)) { + /* The record did not fit on the page. We erase the + end segment of the undo log page and write a log + record of it: this is to ensure that in the debug + version the replicate page constructed using the log + records stays identical to the original page */ + + trx_undo_erase_page_end(undo_page, &mtr); + mtr_commit(&mtr); + } else { + /* Success */ + + mtr_commit(&mtr); + + undo->empty = FALSE; + undo->top_page_no = page_no; + undo->top_offset = offset; + undo->top_undo_no = trx->undo_no; + undo->guess_block = undo_block; + + UT_DULINT_INC(trx->undo_no); + + mutex_exit(&trx->undo_mutex); + + *roll_ptr = trx_undo_build_roll_ptr( + op_type == TRX_UNDO_INSERT_OP, + rseg->id, page_no, offset); + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } + return(DB_SUCCESS); + } + + ut_ad(page_no == undo->last_page_no); + + /* We have to extend the undo log by one page */ + + mtr_start(&mtr); + + /* When we add a page to an undo log, this is analogous to + a pessimistic insert in a B-tree, and we must reserve the + counterpart of the tree latch, which is the rseg mutex. */ + + mutex_enter(&(rseg->mutex)); + + page_no = trx_undo_add_page(trx, undo, &mtr); + + mutex_exit(&(rseg->mutex)); + + if (UNIV_UNLIKELY(page_no == FIL_NULL)) { + /* Did not succeed: out of space */ + + mutex_exit(&(trx->undo_mutex)); + mtr_commit(&mtr); + if (UNIV_LIKELY_NULL(heap)) { + mem_heap_free(heap); + } + return(DB_OUT_OF_FILE_SPACE); + } + } +} + +/*============== BUILDING PREVIOUS VERSION OF A RECORD ===============*/ + +/********************************************************************** +Copies an undo record to heap. This function can be called if we know that +the undo log record exists. */ +UNIV_INTERN +trx_undo_rec_t* +trx_undo_get_undo_rec_low( +/*======================*/ + /* out, own: copy of the record */ + dulint roll_ptr, /* in: roll pointer to record */ + mem_heap_t* heap) /* in: memory heap where copied */ +{ + trx_undo_rec_t* undo_rec; + ulint rseg_id; + ulint page_no; + ulint offset; + page_t* undo_page; + trx_rseg_t* rseg; + ibool is_insert; + mtr_t mtr; + + trx_undo_decode_roll_ptr(roll_ptr, &is_insert, &rseg_id, &page_no, + &offset); + rseg = trx_rseg_get_on_id(rseg_id); + + mtr_start(&mtr); + + undo_page = trx_undo_page_get_s_latched(rseg->space, rseg->zip_size, + page_no, &mtr); + + undo_rec = trx_undo_rec_copy(undo_page + offset, heap); + + mtr_commit(&mtr); + + return(undo_rec); +} + +/********************************************************************** +Copies an undo record to heap. */ +UNIV_INTERN +ulint +trx_undo_get_undo_rec( +/*==================*/ + /* out: DB_SUCCESS, or + DB_MISSING_HISTORY if the undo log + has been truncated and we cannot + fetch the old version; NOTE: the + caller must have latches on the + clustered index page and purge_view */ + dulint roll_ptr, /* in: roll pointer to record */ + dulint trx_id, /* in: id of the trx that generated + the roll pointer: it points to an + undo log of this transaction */ + trx_undo_rec_t** undo_rec, /* out, own: copy of the record */ + mem_heap_t* heap) /* in: memory heap where copied */ +{ +#ifdef UNIV_SYNC_DEBUG + ut_ad(rw_lock_own(&(purge_sys->latch), RW_LOCK_SHARED)); +#endif /* UNIV_SYNC_DEBUG */ + + if (!trx_purge_update_undo_must_exist(trx_id)) { + + /* It may be that the necessary undo log has already been + deleted */ + + return(DB_MISSING_HISTORY); + } + + *undo_rec = trx_undo_get_undo_rec_low(roll_ptr, heap); + + return(DB_SUCCESS); +} + +/*********************************************************************** +Build a previous version of a clustered index record. This function checks +that the caller has a latch on the index page of the clustered index record +and an s-latch on the purge_view. This guarantees that the stack of versions +is locked all the way down to the purge_view. */ +UNIV_INTERN +ulint +trx_undo_prev_version_build( +/*========================*/ + /* out: DB_SUCCESS, or DB_MISSING_HISTORY if + the previous version is not >= purge_view, + which means that it may have been removed, + DB_ERROR if corrupted record */ + const rec_t* index_rec,/* in: clustered index record in the + index tree */ + mtr_t* index_mtr __attribute__((unused)), + /* in: mtr which contains the latch to + index_rec page and purge_view */ + const rec_t* rec, /* in: version of a clustered index record */ + dict_index_t* index, /* in: clustered index */ + ulint* offsets,/* in: rec_get_offsets(rec, index) */ + mem_heap_t* heap, /* in: memory heap from which the memory + needed is allocated */ + rec_t** old_vers)/* out, own: previous version, or NULL if + rec is the first inserted version, or if + history data has been deleted (an error), + or if the purge COULD have removed the version + though it has not yet done so */ +{ + trx_undo_rec_t* undo_rec = NULL; + dtuple_t* entry; + dulint rec_trx_id; + ulint type; + dulint undo_no; + dulint table_id; + dulint trx_id; + dulint roll_ptr; + dulint old_roll_ptr; + upd_t* update; + byte* ptr; + ulint info_bits; + ulint cmpl_info; + ibool dummy_extern; + byte* buf; + ulint err; +#ifdef UNIV_SYNC_DEBUG + ut_ad(rw_lock_own(&(purge_sys->latch), RW_LOCK_SHARED)); +#endif /* UNIV_SYNC_DEBUG */ + ut_ad(mtr_memo_contains_page(index_mtr, index_rec, MTR_MEMO_PAGE_S_FIX) + || mtr_memo_contains_page(index_mtr, index_rec, + MTR_MEMO_PAGE_X_FIX)); + ut_ad(rec_offs_validate(rec, index, offsets)); + + if (!dict_index_is_clust(index)) { + fprintf(stderr, "InnoDB: Error: trying to access" + " update undo rec for non-clustered index %s\n" + "InnoDB: Submit a detailed bug report to" + " http://bugs.mysql.com\n" + "InnoDB: index record ", index->name); + rec_print(stderr, index_rec, index); + fputs("\n" + "InnoDB: record version ", stderr); + rec_print_new(stderr, rec, offsets); + putc('\n', stderr); + return(DB_ERROR); + } + + roll_ptr = row_get_rec_roll_ptr(rec, index, offsets); + old_roll_ptr = roll_ptr; + + *old_vers = NULL; + + if (trx_undo_roll_ptr_is_insert(roll_ptr)) { + + /* The record rec is the first inserted version */ + + return(DB_SUCCESS); + } + + rec_trx_id = row_get_rec_trx_id(rec, index, offsets); + + err = trx_undo_get_undo_rec(roll_ptr, rec_trx_id, &undo_rec, heap); + + if (UNIV_UNLIKELY(err != DB_SUCCESS)) { + /* The undo record may already have been purged. + This should never happen in InnoDB. */ + + return(err); + } + + ptr = trx_undo_rec_get_pars(undo_rec, &type, &cmpl_info, + &dummy_extern, &undo_no, &table_id); + + ptr = trx_undo_update_rec_get_sys_cols(ptr, &trx_id, &roll_ptr, + &info_bits); + + /* (a) If a clustered index record version is such that the + trx id stamp in it is bigger than purge_sys->view, then the + BLOBs in that version are known to exist (the purge has not + progressed that far); + + (b) if the version is the first version such that trx id in it + is less than purge_sys->view, and it is not delete-marked, + then the BLOBs in that version are known to exist (the purge + cannot have purged the BLOBs referenced by that version + yet). + + This function does not fetch any BLOBs. The callers might, by + possibly invoking row_ext_create() via row_build(). However, + they should have all needed information in the *old_vers + returned by this function. This is because *old_vers is based + on the transaction undo log records. The function + trx_undo_page_fetch_ext() will write BLOB prefixes to the + transaction undo log that are at least as long as the longest + possible column prefix in a secondary index. Thus, secondary + index entries for *old_vers can be constructed without + dereferencing any BLOB pointers. */ + + ptr = trx_undo_rec_skip_row_ref(ptr, index); + + ptr = trx_undo_update_rec_get_update(ptr, index, type, trx_id, + roll_ptr, info_bits, + NULL, heap, &update); + + if (ut_dulint_cmp(table_id, index->table->id) != 0) { + ptr = NULL; + + fprintf(stderr, + "InnoDB: Error: trying to access update undo rec" + " for table %s\n" + "InnoDB: but the table id in the" + " undo record is wrong\n" + "InnoDB: Submit a detailed bug report" + " to http://bugs.mysql.com\n" + "InnoDB: Run also CHECK TABLE %s\n", + index->table_name, index->table_name); + } + + if (ptr == NULL) { + /* The record was corrupted, return an error; these printfs + should catch an elusive bug in row_vers_old_has_index_entry */ + + fprintf(stderr, + "InnoDB: table %s, index %s, n_uniq %lu\n" + "InnoDB: undo rec address %p, type %lu cmpl_info %lu\n" + "InnoDB: undo rec table id %lu %lu," + " index table id %lu %lu\n" + "InnoDB: dump of 150 bytes in undo rec: ", + index->table_name, index->name, + (ulong) dict_index_get_n_unique(index), + undo_rec, (ulong) type, (ulong) cmpl_info, + (ulong) ut_dulint_get_high(table_id), + (ulong) ut_dulint_get_low(table_id), + (ulong) ut_dulint_get_high(index->table->id), + (ulong) ut_dulint_get_low(index->table->id)); + ut_print_buf(stderr, undo_rec, 150); + fputs("\n" + "InnoDB: index record ", stderr); + rec_print(stderr, index_rec, index); + fputs("\n" + "InnoDB: record version ", stderr); + rec_print_new(stderr, rec, offsets); + fprintf(stderr, "\n" + "InnoDB: Record trx id " TRX_ID_FMT + ", update rec trx id " TRX_ID_FMT "\n" + "InnoDB: Roll ptr in rec %lu %lu, in update rec" + " %lu %lu\n", + TRX_ID_PREP_PRINTF(rec_trx_id), + TRX_ID_PREP_PRINTF(trx_id), + (ulong) ut_dulint_get_high(old_roll_ptr), + (ulong) ut_dulint_get_low(old_roll_ptr), + (ulong) ut_dulint_get_high(roll_ptr), + (ulong) ut_dulint_get_low(roll_ptr)); + + trx_purge_sys_print(); + return(DB_ERROR); + } + + if (row_upd_changes_field_size_or_external(index, offsets, update)) { + ulint n_ext; + + /* We have to set the appropriate extern storage bits in the + old version of the record: the extern bits in rec for those + fields that update does NOT update, as well as the the bits for + those fields that update updates to become externally stored + fields. Store the info: */ + + entry = row_rec_to_index_entry(ROW_COPY_DATA, rec, index, + offsets, &n_ext, heap); + n_ext += btr_push_update_extern_fields(entry, update, heap); + /* The page containing the clustered index record + corresponding to entry is latched in mtr. Thus the + following call is safe. */ + row_upd_index_replace_new_col_vals(entry, index, update, heap); + + buf = mem_heap_alloc(heap, rec_get_converted_size(index, entry, + n_ext)); + + *old_vers = rec_convert_dtuple_to_rec(buf, index, + entry, n_ext); + } else { + buf = mem_heap_alloc(heap, rec_offs_size(offsets)); + *old_vers = rec_copy(buf, rec, offsets); + rec_offs_make_valid(*old_vers, index, offsets); + row_upd_rec_in_place(*old_vers, index, offsets, update, NULL); + } + + return(DB_SUCCESS); +} === added file 'storage/xtradb/trx/trx0roll.c' --- a/storage/xtradb/trx/trx0roll.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/trx/trx0roll.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,1359 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Transaction rollback + +Created 3/26/1996 Heikki Tuuri +*******************************************************/ + +#include "trx0roll.h" + +#ifdef UNIV_NONINL +#include "trx0roll.ic" +#endif + +#include "fsp0fsp.h" +#include "mach0data.h" +#include "trx0rseg.h" +#include "trx0trx.h" +#include "trx0undo.h" +#include "trx0rec.h" +#include "que0que.h" +#include "usr0sess.h" +#include "srv0que.h" +#include "srv0start.h" +#include "row0undo.h" +#include "row0mysql.h" +#include "lock0lock.h" +#include "pars0pars.h" + +/* This many pages must be undone before a truncate is tried within rollback */ +#define TRX_ROLL_TRUNC_THRESHOLD 1 + +/* In crash recovery, the current trx to be rolled back */ +static trx_t* trx_roll_crash_recv_trx = NULL; + +/* In crash recovery we set this to the undo n:o of the current trx to be +rolled back. Then we can print how many % the rollback has progressed. */ +static ib_int64_t trx_roll_max_undo_no; + +/* Auxiliary variable which tells the previous progress % we printed */ +static ulint trx_roll_progress_printed_pct; + +/*********************************************************************** +Rollback a transaction used in MySQL. */ +UNIV_INTERN +int +trx_general_rollback_for_mysql( +/*===========================*/ + /* out: error code or DB_SUCCESS */ + trx_t* trx, /* in: transaction handle */ + ibool partial,/* in: TRUE if partial rollback requested */ + trx_savept_t* savept) /* in: pointer to savepoint undo number, if + partial rollback requested */ +{ +#ifndef UNIV_HOTBACKUP + mem_heap_t* heap; + que_thr_t* thr; + roll_node_t* roll_node; + + /* Tell Innobase server that there might be work for + utility threads: */ + + srv_active_wake_master_thread(); + + trx_start_if_not_started(trx); + + heap = mem_heap_create(512); + + roll_node = roll_node_create(heap); + + roll_node->partial = partial; + + if (partial) { + roll_node->savept = *savept; + } + + trx->error_state = DB_SUCCESS; + + thr = pars_complete_graph_for_exec(roll_node, trx, heap); + + ut_a(thr == que_fork_start_command(que_node_get_parent(thr))); + que_run_threads(thr); + + mutex_enter(&kernel_mutex); + + while (trx->que_state != TRX_QUE_RUNNING) { + + mutex_exit(&kernel_mutex); + + os_thread_sleep(100000); + + mutex_enter(&kernel_mutex); + } + + mutex_exit(&kernel_mutex); + + mem_heap_free(heap); + + ut_a(trx->error_state == DB_SUCCESS); + + /* Tell Innobase server that there might be work for + utility threads: */ + + srv_active_wake_master_thread(); + + return((int) trx->error_state); +#else /* UNIV_HOTBACKUP */ + /* This function depends on MySQL code that is not included in + InnoDB Hot Backup builds. Besides, this function should never + be called in InnoDB Hot Backup. */ + ut_error; + return(DB_FAIL); +#endif /* UNIV_HOTBACKUP */ +} + +/*********************************************************************** +Rollback a transaction used in MySQL. */ +UNIV_INTERN +int +trx_rollback_for_mysql( +/*===================*/ + /* out: error code or DB_SUCCESS */ + trx_t* trx) /* in: transaction handle */ +{ + int err; + + if (trx->conc_state == TRX_NOT_STARTED) { + + return(DB_SUCCESS); + } + + trx->op_info = "rollback"; + + /* If we are doing the XA recovery of prepared transactions, then + the transaction object does not have an InnoDB session object, and we + set a dummy session that we use for all MySQL transactions. */ + + err = trx_general_rollback_for_mysql(trx, FALSE, NULL); + + trx->op_info = ""; + + return(err); +} + +/*********************************************************************** +Rollback the latest SQL statement for MySQL. */ +UNIV_INTERN +int +trx_rollback_last_sql_stat_for_mysql( +/*=================================*/ + /* out: error code or DB_SUCCESS */ + trx_t* trx) /* in: transaction handle */ +{ + int err; + + if (trx->conc_state == TRX_NOT_STARTED) { + + return(DB_SUCCESS); + } + + trx->op_info = "rollback of SQL statement"; + + err = trx_general_rollback_for_mysql(trx, TRUE, + &(trx->last_sql_stat_start)); + /* The following call should not be needed, but we play safe: */ + trx_mark_sql_stat_end(trx); + + trx->op_info = ""; + + return(err); +} + +/*********************************************************************** +Frees a single savepoint struct. */ +UNIV_INTERN +void +trx_roll_savepoint_free( +/*=====================*/ + trx_t* trx, /* in: transaction handle */ + trx_named_savept_t* savep) /* in: savepoint to free */ +{ + ut_a(savep != NULL); + ut_a(UT_LIST_GET_LEN(trx->trx_savepoints) > 0); + + UT_LIST_REMOVE(trx_savepoints, trx->trx_savepoints, savep); + mem_free(savep->name); + mem_free(savep); +} + +/*********************************************************************** +Frees savepoint structs starting from savep, if savep == NULL then +free all savepoints. */ + +void +trx_roll_savepoints_free( +/*=====================*/ + trx_t* trx, /* in: transaction handle */ + trx_named_savept_t* savep) /* in: free all savepoints > this one; + if this is NULL, free all savepoints + of trx */ +{ + trx_named_savept_t* next_savep; + + if (savep == NULL) { + savep = UT_LIST_GET_FIRST(trx->trx_savepoints); + } else { + savep = UT_LIST_GET_NEXT(trx_savepoints, savep); + } + + while (savep != NULL) { + next_savep = UT_LIST_GET_NEXT(trx_savepoints, savep); + + trx_roll_savepoint_free(trx, savep); + + savep = next_savep; + } +} + +/*********************************************************************** +Rolls back a transaction back to a named savepoint. Modifications after the +savepoint are undone but InnoDB does NOT release the corresponding locks +which are stored in memory. If a lock is 'implicit', that is, a new inserted +row holds a lock where the lock information is carried by the trx id stored in +the row, these locks are naturally released in the rollback. Savepoints which +were set after this savepoint are deleted. */ +UNIV_INTERN +ulint +trx_rollback_to_savepoint_for_mysql( +/*================================*/ + /* out: if no savepoint + of the name found then + DB_NO_SAVEPOINT, + otherwise DB_SUCCESS */ + trx_t* trx, /* in: transaction handle */ + const char* savepoint_name, /* in: savepoint name */ + ib_int64_t* mysql_binlog_cache_pos) /* out: the MySQL binlog cache + position corresponding to this + savepoint; MySQL needs this + information to remove the + binlog entries of the queries + executed after the savepoint */ +{ + trx_named_savept_t* savep; + ulint err; + + savep = UT_LIST_GET_FIRST(trx->trx_savepoints); + + while (savep != NULL) { + if (0 == ut_strcmp(savep->name, savepoint_name)) { + /* Found */ + break; + } + savep = UT_LIST_GET_NEXT(trx_savepoints, savep); + } + + if (savep == NULL) { + + return(DB_NO_SAVEPOINT); + } + + if (trx->conc_state == TRX_NOT_STARTED) { + ut_print_timestamp(stderr); + fputs(" InnoDB: Error: transaction has a savepoint ", stderr); + ut_print_name(stderr, trx, FALSE, savep->name); + fputs(" though it is not started\n", stderr); + return(DB_ERROR); + } + + /* We can now free all savepoints strictly later than this one */ + + trx_roll_savepoints_free(trx, savep); + + *mysql_binlog_cache_pos = savep->mysql_binlog_cache_pos; + + trx->op_info = "rollback to a savepoint"; + + err = trx_general_rollback_for_mysql(trx, TRUE, &(savep->savept)); + + /* Store the current undo_no of the transaction so that we know where + to roll back if we have to roll back the next SQL statement: */ + + trx_mark_sql_stat_end(trx); + + trx->op_info = ""; + + return(err); +} + +/*********************************************************************** +Creates a named savepoint. If the transaction is not yet started, starts it. +If there is already a savepoint of the same name, this call erases that old +savepoint and replaces it with a new. Savepoints are deleted in a transaction +commit or rollback. */ +UNIV_INTERN +ulint +trx_savepoint_for_mysql( +/*====================*/ + /* out: always DB_SUCCESS */ + trx_t* trx, /* in: transaction handle */ + const char* savepoint_name, /* in: savepoint name */ + ib_int64_t binlog_cache_pos) /* in: MySQL binlog cache + position corresponding to this + connection at the time of the + savepoint */ +{ + trx_named_savept_t* savep; + + ut_a(trx); + ut_a(savepoint_name); + + trx_start_if_not_started(trx); + + savep = UT_LIST_GET_FIRST(trx->trx_savepoints); + + while (savep != NULL) { + if (0 == ut_strcmp(savep->name, savepoint_name)) { + /* Found */ + break; + } + savep = UT_LIST_GET_NEXT(trx_savepoints, savep); + } + + if (savep) { + /* There is a savepoint with the same name: free that */ + + UT_LIST_REMOVE(trx_savepoints, trx->trx_savepoints, savep); + + mem_free(savep->name); + mem_free(savep); + } + + /* Create a new savepoint and add it as the last in the list */ + + savep = mem_alloc(sizeof(trx_named_savept_t)); + + savep->name = mem_strdup(savepoint_name); + + savep->savept = trx_savept_take(trx); + + savep->mysql_binlog_cache_pos = binlog_cache_pos; + + UT_LIST_ADD_LAST(trx_savepoints, trx->trx_savepoints, savep); + + return(DB_SUCCESS); +} + +/*********************************************************************** +Releases only the named savepoint. Savepoints which were set after this +savepoint are left as is. */ +UNIV_INTERN +ulint +trx_release_savepoint_for_mysql( +/*============================*/ + /* out: if no savepoint + of the name found then + DB_NO_SAVEPOINT, + otherwise DB_SUCCESS */ + trx_t* trx, /* in: transaction handle */ + const char* savepoint_name) /* in: savepoint name */ +{ + trx_named_savept_t* savep; + + savep = UT_LIST_GET_FIRST(trx->trx_savepoints); + + /* Search for the savepoint by name and free if found. */ + while (savep != NULL) { + if (0 == ut_strcmp(savep->name, savepoint_name)) { + trx_roll_savepoint_free(trx, savep); + return(DB_SUCCESS); + } + savep = UT_LIST_GET_NEXT(trx_savepoints, savep); + } + + return(DB_NO_SAVEPOINT); +} + +/*********************************************************************** +Determines if this transaction is rolling back an incomplete transaction +in crash recovery. */ +UNIV_INTERN +ibool +trx_is_recv( +/*========*/ + /* out: TRUE if trx is an incomplete + transaction that is being rolled back + in crash recovery */ + const trx_t* trx) /* in: transaction */ +{ + return(trx == trx_roll_crash_recv_trx); +} + +/*********************************************************************** +Returns a transaction savepoint taken at this point in time. */ +UNIV_INTERN +trx_savept_t +trx_savept_take( +/*============*/ + /* out: savepoint */ + trx_t* trx) /* in: transaction */ +{ + trx_savept_t savept; + + savept.least_undo_no = trx->undo_no; + + return(savept); +} + +/*********************************************************************** +Roll back an active transaction. */ +static +void +trx_rollback_active( +/*================*/ + trx_t* trx) /* in/out: transaction */ +{ + mem_heap_t* heap; + que_fork_t* fork; + que_thr_t* thr; + roll_node_t* roll_node; + dict_table_t* table; + ib_int64_t rows_to_undo; + const char* unit = ""; + ibool dictionary_locked = FALSE; + + heap = mem_heap_create(512); + + fork = que_fork_create(NULL, NULL, QUE_FORK_RECOVERY, heap); + fork->trx = trx; + + thr = que_thr_create(fork, heap); + + roll_node = roll_node_create(heap); + + thr->child = roll_node; + roll_node->common.parent = thr; + + mutex_enter(&kernel_mutex); + + trx->graph = fork; + + ut_a(thr == que_fork_start_command(fork)); + + trx_roll_crash_recv_trx = trx; + trx_roll_max_undo_no = ut_conv_dulint_to_longlong(trx->undo_no); + trx_roll_progress_printed_pct = 0; + rows_to_undo = trx_roll_max_undo_no; + + if (rows_to_undo > 1000000000) { + rows_to_undo = rows_to_undo / 1000000; + unit = "M"; + } + + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: Rolling back trx with id " TRX_ID_FMT ", %lu%s" + " rows to undo\n", + TRX_ID_PREP_PRINTF(trx->id), + (ulong) rows_to_undo, unit); + mutex_exit(&kernel_mutex); + + trx->mysql_thread_id = os_thread_get_curr_id(); + + trx->mysql_process_no = os_proc_get_number(); + + if (trx_get_dict_operation(trx) != TRX_DICT_OP_NONE) { + row_mysql_lock_data_dictionary(trx); + dictionary_locked = TRUE; + } + + que_run_threads(thr); + + mutex_enter(&kernel_mutex); + + while (trx->que_state != TRX_QUE_RUNNING) { + + mutex_exit(&kernel_mutex); + + fprintf(stderr, + "InnoDB: Waiting for rollback of trx id %lu to end\n", + (ulong) ut_dulint_get_low(trx->id)); + os_thread_sleep(100000); + + mutex_enter(&kernel_mutex); + } + + mutex_exit(&kernel_mutex); + + if (trx_get_dict_operation(trx) != TRX_DICT_OP_NONE + && !ut_dulint_is_zero(trx->table_id)) { + + /* If the transaction was for a dictionary operation, we + drop the relevant table, if it still exists */ + + fprintf(stderr, + "InnoDB: Dropping table with id %lu %lu" + " in recovery if it exists\n", + (ulong) ut_dulint_get_high(trx->table_id), + (ulong) ut_dulint_get_low(trx->table_id)); + + table = dict_table_get_on_id_low(trx->table_id); + + if (table) { + ulint err; + + fputs("InnoDB: Table found: dropping table ", stderr); + ut_print_name(stderr, trx, TRUE, table->name); + fputs(" in recovery\n", stderr); + + err = row_drop_table_for_mysql(table->name, trx, TRUE); + trx_commit_for_mysql(trx); + + ut_a(err == (int) DB_SUCCESS); + } + } + + if (dictionary_locked) { + row_mysql_unlock_data_dictionary(trx); + } + + fprintf(stderr, "\nInnoDB: Rolling back of trx id " TRX_ID_FMT + " completed\n", + TRX_ID_PREP_PRINTF(trx->id)); + mem_heap_free(heap); + + trx_roll_crash_recv_trx = NULL; +} + +/*********************************************************************** +Rollback or clean up any incomplete transactions which were +encountered in crash recovery. If the transaction already was +committed, then we clean up a possible insert undo log. If the +transaction was not yet committed, then we roll it back. +Note: this is done in a background thread. */ +UNIV_INTERN +os_thread_ret_t +trx_rollback_or_clean_all_recovered( +/*================================*/ + /* out: a dummy parameter */ + void* arg __attribute__((unused))) + /* in: a dummy parameter required by + os_thread_create */ +{ + trx_t* trx; + + mutex_enter(&kernel_mutex); + + if (UT_LIST_GET_FIRST(trx_sys->trx_list)) { + + fprintf(stderr, + "InnoDB: Starting in background the rollback" + " of uncommitted transactions\n"); + } else { + goto leave_function; + } + + mutex_exit(&kernel_mutex); + +loop: + mutex_enter(&kernel_mutex); + + for (trx = UT_LIST_GET_FIRST(trx_sys->trx_list); trx; + trx = UT_LIST_GET_NEXT(trx_list, trx)) { + if (!trx->is_recovered) { + continue; + } + + switch (trx->conc_state) { + case TRX_NOT_STARTED: + case TRX_PREPARED: + continue; + + case TRX_COMMITTED_IN_MEMORY: + mutex_exit(&kernel_mutex); + fprintf(stderr, + "InnoDB: Cleaning up trx with id " + TRX_ID_FMT "\n", + TRX_ID_PREP_PRINTF(trx->id)); + trx_cleanup_at_db_startup(trx); + goto loop; + + case TRX_ACTIVE: + mutex_exit(&kernel_mutex); + trx_rollback_active(trx); + goto loop; + } + } + + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: Rollback of non-prepared transactions completed\n"); + +leave_function: + mutex_exit(&kernel_mutex); + + /* We count the number of threads in os_thread_exit(). A created + thread should always use that to exit and not use return() to exit. */ + + os_thread_exit(NULL); + + OS_THREAD_DUMMY_RETURN; +} + +/*********************************************************************** +Creates an undo number array. */ +UNIV_INTERN +trx_undo_arr_t* +trx_undo_arr_create(void) +/*=====================*/ +{ + trx_undo_arr_t* arr; + mem_heap_t* heap; + ulint i; + + heap = mem_heap_create(1024); + + arr = mem_heap_alloc(heap, sizeof(trx_undo_arr_t)); + + arr->infos = mem_heap_alloc(heap, sizeof(trx_undo_inf_t) + * UNIV_MAX_PARALLELISM); + arr->n_cells = UNIV_MAX_PARALLELISM; + arr->n_used = 0; + + arr->heap = heap; + + for (i = 0; i < UNIV_MAX_PARALLELISM; i++) { + + (trx_undo_arr_get_nth_info(arr, i))->in_use = FALSE; + } + + return(arr); +} + +/*********************************************************************** +Frees an undo number array. */ +UNIV_INTERN +void +trx_undo_arr_free( +/*==============*/ + trx_undo_arr_t* arr) /* in: undo number array */ +{ + ut_ad(arr->n_used == 0); + + mem_heap_free(arr->heap); +} + +/*********************************************************************** +Stores info of an undo log record to the array if it is not stored yet. */ +static +ibool +trx_undo_arr_store_info( +/*====================*/ + /* out: FALSE if the record already existed in the + array */ + trx_t* trx, /* in: transaction */ + dulint undo_no)/* in: undo number */ +{ + trx_undo_inf_t* cell; + trx_undo_inf_t* stored_here; + trx_undo_arr_t* arr; + ulint n_used; + ulint n; + ulint i; + + n = 0; + arr = trx->undo_no_arr; + n_used = arr->n_used; + stored_here = NULL; + + for (i = 0;; i++) { + cell = trx_undo_arr_get_nth_info(arr, i); + + if (!cell->in_use) { + if (!stored_here) { + /* Not in use, we may store here */ + cell->undo_no = undo_no; + cell->in_use = TRUE; + + arr->n_used++; + + stored_here = cell; + } + } else { + n++; + + if (0 == ut_dulint_cmp(cell->undo_no, undo_no)) { + + if (stored_here) { + stored_here->in_use = FALSE; + ut_ad(arr->n_used > 0); + arr->n_used--; + } + + ut_ad(arr->n_used == n_used); + + return(FALSE); + } + } + + if (n == n_used && stored_here) { + + ut_ad(arr->n_used == 1 + n_used); + + return(TRUE); + } + } +} + +/*********************************************************************** +Removes an undo number from the array. */ +static +void +trx_undo_arr_remove_info( +/*=====================*/ + trx_undo_arr_t* arr, /* in: undo number array */ + dulint undo_no)/* in: undo number */ +{ + trx_undo_inf_t* cell; + ulint n_used; + ulint n; + ulint i; + + n_used = arr->n_used; + n = 0; + + for (i = 0;; i++) { + cell = trx_undo_arr_get_nth_info(arr, i); + + if (cell->in_use + && 0 == ut_dulint_cmp(cell->undo_no, undo_no)) { + + cell->in_use = FALSE; + + ut_ad(arr->n_used > 0); + + arr->n_used--; + + return; + } + } +} + +/*********************************************************************** +Gets the biggest undo number in an array. */ +static +dulint +trx_undo_arr_get_biggest( +/*=====================*/ + /* out: biggest value, ut_dulint_zero if + the array is empty */ + trx_undo_arr_t* arr) /* in: undo number array */ +{ + trx_undo_inf_t* cell; + ulint n_used; + dulint biggest; + ulint n; + ulint i; + + n = 0; + n_used = arr->n_used; + biggest = ut_dulint_zero; + + for (i = 0;; i++) { + cell = trx_undo_arr_get_nth_info(arr, i); + + if (cell->in_use) { + n++; + if (ut_dulint_cmp(cell->undo_no, biggest) > 0) { + + biggest = cell->undo_no; + } + } + + if (n == n_used) { + return(biggest); + } + } +} + +/*************************************************************************** +Tries truncate the undo logs. */ +UNIV_INTERN +void +trx_roll_try_truncate( +/*==================*/ + trx_t* trx) /* in: transaction */ +{ + trx_undo_arr_t* arr; + dulint limit; + dulint biggest; + + ut_ad(mutex_own(&(trx->undo_mutex))); + ut_ad(mutex_own(&((trx->rseg)->mutex))); + + trx->pages_undone = 0; + + arr = trx->undo_no_arr; + + limit = trx->undo_no; + + if (arr->n_used > 0) { + biggest = trx_undo_arr_get_biggest(arr); + + if (ut_dulint_cmp(biggest, limit) >= 0) { + + limit = ut_dulint_add(biggest, 1); + } + } + + if (trx->insert_undo) { + trx_undo_truncate_end(trx, trx->insert_undo, limit); + } + + if (trx->update_undo) { + trx_undo_truncate_end(trx, trx->update_undo, limit); + } +} + +/*************************************************************************** +Pops the topmost undo log record in a single undo log and updates the info +about the topmost record in the undo log memory struct. */ +static +trx_undo_rec_t* +trx_roll_pop_top_rec( +/*=================*/ + /* out: undo log record, the page s-latched */ + trx_t* trx, /* in: transaction */ + trx_undo_t* undo, /* in: undo log */ + mtr_t* mtr) /* in: mtr */ +{ + page_t* undo_page; + ulint offset; + trx_undo_rec_t* prev_rec; + page_t* prev_rec_page; + + ut_ad(mutex_own(&(trx->undo_mutex))); + + undo_page = trx_undo_page_get_s_latched(undo->space, undo->zip_size, + undo->top_page_no, mtr); + offset = undo->top_offset; + + /* fprintf(stderr, "Thread %lu undoing trx %lu undo record %lu\n", + os_thread_get_curr_id(), ut_dulint_get_low(trx->id), + ut_dulint_get_low(undo->top_undo_no)); */ + + prev_rec = trx_undo_get_prev_rec(undo_page + offset, + undo->hdr_page_no, undo->hdr_offset, + mtr); + if (prev_rec == NULL) { + + undo->empty = TRUE; + } else { + prev_rec_page = page_align(prev_rec); + + if (prev_rec_page != undo_page) { + + trx->pages_undone++; + } + + undo->top_page_no = page_get_page_no(prev_rec_page); + undo->top_offset = prev_rec - prev_rec_page; + undo->top_undo_no = trx_undo_rec_get_undo_no(prev_rec); + } + + return(undo_page + offset); +} + +/************************************************************************ +Pops the topmost record when the two undo logs of a transaction are seen +as a single stack of records ordered by their undo numbers. Inserts the +undo number of the popped undo record to the array of currently processed +undo numbers in the transaction. When the query thread finishes processing +of this undo record, it must be released with trx_undo_rec_release. */ +UNIV_INTERN +trx_undo_rec_t* +trx_roll_pop_top_rec_of_trx( +/*========================*/ + /* out: undo log record copied to heap, NULL + if none left, or if the undo number of the + top record would be less than the limit */ + trx_t* trx, /* in: transaction */ + dulint limit, /* in: least undo number we need */ + dulint* roll_ptr,/* out: roll pointer to undo record */ + mem_heap_t* heap) /* in: memory heap where copied */ +{ + trx_undo_t* undo; + trx_undo_t* ins_undo; + trx_undo_t* upd_undo; + trx_undo_rec_t* undo_rec; + trx_undo_rec_t* undo_rec_copy; + dulint undo_no; + ibool is_insert; + trx_rseg_t* rseg; + ulint progress_pct; + mtr_t mtr; + + rseg = trx->rseg; +try_again: + mutex_enter(&(trx->undo_mutex)); + + if (trx->pages_undone >= TRX_ROLL_TRUNC_THRESHOLD) { + mutex_enter(&(rseg->mutex)); + + trx_roll_try_truncate(trx); + + mutex_exit(&(rseg->mutex)); + } + + ins_undo = trx->insert_undo; + upd_undo = trx->update_undo; + + if (!ins_undo || ins_undo->empty) { + undo = upd_undo; + } else if (!upd_undo || upd_undo->empty) { + undo = ins_undo; + } else if (ut_dulint_cmp(upd_undo->top_undo_no, + ins_undo->top_undo_no) > 0) { + undo = upd_undo; + } else { + undo = ins_undo; + } + + if (!undo || undo->empty + || (ut_dulint_cmp(limit, undo->top_undo_no) > 0)) { + + if ((trx->undo_no_arr)->n_used == 0) { + /* Rollback is ending */ + + mutex_enter(&(rseg->mutex)); + + trx_roll_try_truncate(trx); + + mutex_exit(&(rseg->mutex)); + } + + mutex_exit(&(trx->undo_mutex)); + + return(NULL); + } + + if (undo == ins_undo) { + is_insert = TRUE; + } else { + is_insert = FALSE; + } + + *roll_ptr = trx_undo_build_roll_ptr(is_insert, (undo->rseg)->id, + undo->top_page_no, + undo->top_offset); + mtr_start(&mtr); + + undo_rec = trx_roll_pop_top_rec(trx, undo, &mtr); + + undo_no = trx_undo_rec_get_undo_no(undo_rec); + + ut_ad(ut_dulint_cmp(ut_dulint_add(undo_no, 1), trx->undo_no) == 0); + + /* We print rollback progress info if we are in a crash recovery + and the transaction has at least 1000 row operations to undo. */ + + if (trx == trx_roll_crash_recv_trx && trx_roll_max_undo_no > 1000) { + + progress_pct = 100 - (ulint) + ((ut_conv_dulint_to_longlong(undo_no) * 100) + / trx_roll_max_undo_no); + if (progress_pct != trx_roll_progress_printed_pct) { + if (trx_roll_progress_printed_pct == 0) { + fprintf(stderr, + "\nInnoDB: Progress in percents:" + " %lu", (ulong) progress_pct); + } else { + fprintf(stderr, + " %lu", (ulong) progress_pct); + } + fflush(stderr); + trx_roll_progress_printed_pct = progress_pct; + } + } + + trx->undo_no = undo_no; + + if (!trx_undo_arr_store_info(trx, undo_no)) { + /* A query thread is already processing this undo log record */ + + mutex_exit(&(trx->undo_mutex)); + + mtr_commit(&mtr); + + goto try_again; + } + + undo_rec_copy = trx_undo_rec_copy(undo_rec, heap); + + mutex_exit(&(trx->undo_mutex)); + + mtr_commit(&mtr); + + return(undo_rec_copy); +} + +/************************************************************************ +Reserves an undo log record for a query thread to undo. This should be +called if the query thread gets the undo log record not using the pop +function above. */ +UNIV_INTERN +ibool +trx_undo_rec_reserve( +/*=================*/ + /* out: TRUE if succeeded */ + trx_t* trx, /* in: transaction */ + dulint undo_no)/* in: undo number of the record */ +{ + ibool ret; + + mutex_enter(&(trx->undo_mutex)); + + ret = trx_undo_arr_store_info(trx, undo_no); + + mutex_exit(&(trx->undo_mutex)); + + return(ret); +} + +/*********************************************************************** +Releases a reserved undo record. */ +UNIV_INTERN +void +trx_undo_rec_release( +/*=================*/ + trx_t* trx, /* in: transaction */ + dulint undo_no)/* in: undo number */ +{ + trx_undo_arr_t* arr; + + mutex_enter(&(trx->undo_mutex)); + + arr = trx->undo_no_arr; + + trx_undo_arr_remove_info(arr, undo_no); + + mutex_exit(&(trx->undo_mutex)); +} + +/************************************************************************* +Starts a rollback operation. */ +UNIV_INTERN +void +trx_rollback( +/*=========*/ + trx_t* trx, /* in: transaction */ + trx_sig_t* sig, /* in: signal starting the rollback */ + que_thr_t** next_thr)/* in/out: next query thread to run; + if the value which is passed in is + a pointer to a NULL pointer, then the + calling function can start running + a new query thread; if the passed value is + NULL, the parameter is ignored */ +{ + que_t* roll_graph; + que_thr_t* thr; + /* que_thr_t* thr2; */ + + ut_ad(mutex_own(&kernel_mutex)); + ut_ad((trx->undo_no_arr == NULL) || ((trx->undo_no_arr)->n_used == 0)); + + /* Initialize the rollback field in the transaction */ + + if (sig->type == TRX_SIG_TOTAL_ROLLBACK) { + + trx->roll_limit = ut_dulint_zero; + + } else if (sig->type == TRX_SIG_ROLLBACK_TO_SAVEPT) { + + trx->roll_limit = (sig->savept).least_undo_no; + + } else if (sig->type == TRX_SIG_ERROR_OCCURRED) { + + trx->roll_limit = trx->last_sql_stat_start.least_undo_no; + } else { + ut_error; + } + + ut_a(ut_dulint_cmp(trx->roll_limit, trx->undo_no) <= 0); + + trx->pages_undone = 0; + + if (trx->undo_no_arr == NULL) { + trx->undo_no_arr = trx_undo_arr_create(); + } + + /* Build a 'query' graph which will perform the undo operations */ + + roll_graph = trx_roll_graph_build(trx); + + trx->graph = roll_graph; + trx->que_state = TRX_QUE_ROLLING_BACK; + + thr = que_fork_start_command(roll_graph); + + ut_ad(thr); + + /* thr2 = que_fork_start_command(roll_graph); + + ut_ad(thr2); */ + + if (next_thr && (*next_thr == NULL)) { + *next_thr = thr; + /* srv_que_task_enqueue_low(thr2); */ + } else { + srv_que_task_enqueue_low(thr); + /* srv_que_task_enqueue_low(thr2); */ + } +} + +/******************************************************************** +Builds an undo 'query' graph for a transaction. The actual rollback is +performed by executing this query graph like a query subprocedure call. +The reply about the completion of the rollback will be sent by this +graph. */ +UNIV_INTERN +que_t* +trx_roll_graph_build( +/*=================*/ + /* out, own: the query graph */ + trx_t* trx) /* in: trx handle */ +{ + mem_heap_t* heap; + que_fork_t* fork; + que_thr_t* thr; + /* que_thr_t* thr2; */ + + ut_ad(mutex_own(&kernel_mutex)); + + heap = mem_heap_create(512); + fork = que_fork_create(NULL, NULL, QUE_FORK_ROLLBACK, heap); + fork->trx = trx; + + thr = que_thr_create(fork, heap); + /* thr2 = que_thr_create(fork, heap); */ + + thr->child = row_undo_node_create(trx, thr, heap); + /* thr2->child = row_undo_node_create(trx, thr2, heap); */ + + return(fork); +} + +/************************************************************************* +Finishes error processing after the necessary partial rollback has been +done. */ +static +void +trx_finish_error_processing( +/*========================*/ + trx_t* trx) /* in: transaction */ +{ + trx_sig_t* sig; + trx_sig_t* next_sig; + + ut_ad(mutex_own(&kernel_mutex)); + + sig = UT_LIST_GET_FIRST(trx->signals); + + while (sig != NULL) { + next_sig = UT_LIST_GET_NEXT(signals, sig); + + if (sig->type == TRX_SIG_ERROR_OCCURRED) { + + trx_sig_remove(trx, sig); + } + + sig = next_sig; + } + + trx->que_state = TRX_QUE_RUNNING; +} + +/************************************************************************* +Finishes a partial rollback operation. */ +static +void +trx_finish_partial_rollback_off_kernel( +/*===================================*/ + trx_t* trx, /* in: transaction */ + que_thr_t** next_thr)/* in/out: next query thread to run; + if the value which is passed in is a pointer + to a NULL pointer, then the calling function + can start running a new query thread; if this + parameter is NULL, it is ignored */ +{ + trx_sig_t* sig; + + ut_ad(mutex_own(&kernel_mutex)); + + sig = UT_LIST_GET_FIRST(trx->signals); + + /* Remove the signal from the signal queue and send reply message + to it */ + + trx_sig_reply(sig, next_thr); + trx_sig_remove(trx, sig); + + trx->que_state = TRX_QUE_RUNNING; +} + +/******************************************************************** +Finishes a transaction rollback. */ +UNIV_INTERN +void +trx_finish_rollback_off_kernel( +/*===========================*/ + que_t* graph, /* in: undo graph which can now be freed */ + trx_t* trx, /* in: transaction */ + que_thr_t** next_thr)/* in/out: next query thread to run; + if the value which is passed in is + a pointer to a NULL pointer, then the + calling function can start running + a new query thread; if this parameter is + NULL, it is ignored */ +{ + trx_sig_t* sig; + trx_sig_t* next_sig; + + ut_ad(mutex_own(&kernel_mutex)); + + ut_a(trx->undo_no_arr == NULL || trx->undo_no_arr->n_used == 0); + + /* Free the memory reserved by the undo graph */ + que_graph_free(graph); + + sig = UT_LIST_GET_FIRST(trx->signals); + + if (sig->type == TRX_SIG_ROLLBACK_TO_SAVEPT) { + + trx_finish_partial_rollback_off_kernel(trx, next_thr); + + return; + + } else if (sig->type == TRX_SIG_ERROR_OCCURRED) { + + trx_finish_error_processing(trx); + + return; + } + +#ifdef UNIV_DEBUG + if (lock_print_waits) { + fprintf(stderr, "Trx %lu rollback finished\n", + (ulong) ut_dulint_get_low(trx->id)); + } +#endif /* UNIV_DEBUG */ + + trx_commit_off_kernel(trx); + + /* Remove all TRX_SIG_TOTAL_ROLLBACK signals from the signal queue and + send reply messages to them */ + + trx->que_state = TRX_QUE_RUNNING; + + while (sig != NULL) { + next_sig = UT_LIST_GET_NEXT(signals, sig); + + if (sig->type == TRX_SIG_TOTAL_ROLLBACK) { + + trx_sig_reply(sig, next_thr); + + trx_sig_remove(trx, sig); + } + + sig = next_sig; + } +} + +/************************************************************************* +Creates a rollback command node struct. */ +UNIV_INTERN +roll_node_t* +roll_node_create( +/*=============*/ + /* out, own: rollback node struct */ + mem_heap_t* heap) /* in: mem heap where created */ +{ + roll_node_t* node; + + node = mem_heap_alloc(heap, sizeof(roll_node_t)); + node->common.type = QUE_NODE_ROLLBACK; + node->state = ROLL_NODE_SEND; + + node->partial = FALSE; + + return(node); +} + +/*************************************************************** +Performs an execution step for a rollback command node in a query graph. */ +UNIV_INTERN +que_thr_t* +trx_rollback_step( +/*==============*/ + /* out: query thread to run next, or NULL */ + que_thr_t* thr) /* in: query thread */ +{ + roll_node_t* node; + ulint sig_no; + trx_savept_t* savept; + + node = thr->run_node; + + ut_ad(que_node_get_type(node) == QUE_NODE_ROLLBACK); + + if (thr->prev_node == que_node_get_parent(node)) { + node->state = ROLL_NODE_SEND; + } + + if (node->state == ROLL_NODE_SEND) { + mutex_enter(&kernel_mutex); + + node->state = ROLL_NODE_WAIT; + + if (node->partial) { + sig_no = TRX_SIG_ROLLBACK_TO_SAVEPT; + savept = &(node->savept); + } else { + sig_no = TRX_SIG_TOTAL_ROLLBACK; + savept = NULL; + } + + /* Send a rollback signal to the transaction */ + + trx_sig_send(thr_get_trx(thr), sig_no, TRX_SIG_SELF, thr, + savept, NULL); + + thr->state = QUE_THR_SIG_REPLY_WAIT; + + mutex_exit(&kernel_mutex); + + return(NULL); + } + + ut_ad(node->state == ROLL_NODE_WAIT); + + thr->run_node = que_node_get_parent(node); + + return(thr); +} === added file 'storage/xtradb/trx/trx0rseg.c' --- a/storage/xtradb/trx/trx0rseg.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/trx/trx0rseg.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,282 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Rollback segment + +Created 3/26/1996 Heikki Tuuri +*******************************************************/ + +#include "trx0rseg.h" + +#ifdef UNIV_NONINL +#include "trx0rseg.ic" +#endif + +#include "trx0undo.h" +#include "fut0lst.h" +#include "srv0srv.h" +#include "trx0purge.h" + +/********************************************************************** +Looks for a rollback segment, based on the rollback segment id. */ +UNIV_INTERN +trx_rseg_t* +trx_rseg_get_on_id( +/*===============*/ + /* out: rollback segment */ + ulint id) /* in: rollback segment id */ +{ + trx_rseg_t* rseg; + + rseg = UT_LIST_GET_FIRST(trx_sys->rseg_list); + ut_ad(rseg); + + while (rseg->id != id) { + rseg = UT_LIST_GET_NEXT(rseg_list, rseg); + ut_ad(rseg); + } + + return(rseg); +} + +/******************************************************************** +Creates a rollback segment header. This function is called only when +a new rollback segment is created in the database. */ +UNIV_INTERN +ulint +trx_rseg_header_create( +/*===================*/ + /* out: page number of the created segment, + FIL_NULL if fail */ + ulint space, /* in: space id */ + ulint zip_size, /* in: compressed page size in bytes + or 0 for uncompressed pages */ + ulint max_size, /* in: max size in pages */ + ulint* slot_no, /* out: rseg id == slot number in trx sys */ + mtr_t* mtr) /* in: mtr */ +{ + ulint page_no; + trx_rsegf_t* rsegf; + trx_sysf_t* sys_header; + ulint i; + buf_block_t* block; + + ut_ad(mtr); + ut_ad(mutex_own(&kernel_mutex)); + ut_ad(mtr_memo_contains(mtr, fil_space_get_latch(space, NULL), + MTR_MEMO_X_LOCK)); + sys_header = trx_sysf_get(mtr); + + *slot_no = trx_sysf_rseg_find_free(mtr); + + if (*slot_no == ULINT_UNDEFINED) { + + return(FIL_NULL); + } + + /* Allocate a new file segment for the rollback segment */ + block = fseg_create(space, 0, + TRX_RSEG + TRX_RSEG_FSEG_HEADER, mtr); + + if (block == NULL) { + /* No space left */ + + return(FIL_NULL); + } + + buf_block_dbg_add_level(block, SYNC_RSEG_HEADER_NEW); + + page_no = buf_block_get_page_no(block); + + /* Get the rollback segment file page */ + rsegf = trx_rsegf_get_new(space, zip_size, page_no, mtr); + + /* Initialize max size field */ + mlog_write_ulint(rsegf + TRX_RSEG_MAX_SIZE, max_size, + MLOG_4BYTES, mtr); + + /* Initialize the history list */ + + mlog_write_ulint(rsegf + TRX_RSEG_HISTORY_SIZE, 0, MLOG_4BYTES, mtr); + flst_init(rsegf + TRX_RSEG_HISTORY, mtr); + + /* Reset the undo log slots */ + for (i = 0; i < TRX_RSEG_N_SLOTS; i++) { + + trx_rsegf_set_nth_undo(rsegf, i, FIL_NULL, mtr); + } + + /* Add the rollback segment info to the free slot in the trx system + header */ + + trx_sysf_rseg_set_space(sys_header, *slot_no, space, mtr); + trx_sysf_rseg_set_page_no(sys_header, *slot_no, page_no, mtr); + + return(page_no); +} + +/*************************************************************************** +Creates and initializes a rollback segment object. The values for the +fields are read from the header. The object is inserted to the rseg +list of the trx system object and a pointer is inserted in the rseg +array in the trx system object. */ +static +trx_rseg_t* +trx_rseg_mem_create( +/*================*/ + /* out, own: rollback segment object */ + ulint id, /* in: rollback segment id */ + ulint space, /* in: space where the segment placed */ + ulint zip_size, /* in: compressed page size in bytes + or 0 for uncompressed pages */ + ulint page_no, /* in: page number of the segment header */ + mtr_t* mtr) /* in: mtr */ +{ + trx_rsegf_t* rseg_header; + trx_rseg_t* rseg; + trx_ulogf_t* undo_log_hdr; + fil_addr_t node_addr; + ulint sum_of_undo_sizes; + ulint len; + + ut_ad(mutex_own(&kernel_mutex)); + + rseg = mem_alloc(sizeof(trx_rseg_t)); + + rseg->id = id; + rseg->space = space; + rseg->zip_size = zip_size; + rseg->page_no = page_no; + + mutex_create(&rseg->mutex, SYNC_RSEG); + + UT_LIST_ADD_LAST(rseg_list, trx_sys->rseg_list, rseg); + + trx_sys_set_nth_rseg(trx_sys, id, rseg); + + rseg_header = trx_rsegf_get_new(space, zip_size, page_no, mtr); + + rseg->max_size = mtr_read_ulint(rseg_header + TRX_RSEG_MAX_SIZE, + MLOG_4BYTES, mtr); + + /* Initialize the undo log lists according to the rseg header */ + + sum_of_undo_sizes = trx_undo_lists_init(rseg); + + rseg->curr_size = mtr_read_ulint(rseg_header + TRX_RSEG_HISTORY_SIZE, + MLOG_4BYTES, mtr) + + 1 + sum_of_undo_sizes; + + len = flst_get_len(rseg_header + TRX_RSEG_HISTORY, mtr); + if (len > 0) { + trx_sys->rseg_history_len += len; + + node_addr = trx_purge_get_log_from_hist( + flst_get_last(rseg_header + TRX_RSEG_HISTORY, mtr)); + rseg->last_page_no = node_addr.page; + rseg->last_offset = node_addr.boffset; + + undo_log_hdr = trx_undo_page_get(rseg->space, rseg->zip_size, + node_addr.page, + mtr) + node_addr.boffset; + + rseg->last_trx_no = mtr_read_dulint( + undo_log_hdr + TRX_UNDO_TRX_NO, mtr); + rseg->last_del_marks = mtr_read_ulint( + undo_log_hdr + TRX_UNDO_DEL_MARKS, MLOG_2BYTES, mtr); + } else { + rseg->last_page_no = FIL_NULL; + } + + return(rseg); +} + +/************************************************************************* +Creates the memory copies for rollback segments and initializes the +rseg list and array in trx_sys at a database startup. */ +UNIV_INTERN +void +trx_rseg_list_and_array_init( +/*=========================*/ + trx_sysf_t* sys_header, /* in: trx system header */ + mtr_t* mtr) /* in: mtr */ +{ + ulint i; + ulint page_no; + ulint space; + + UT_LIST_INIT(trx_sys->rseg_list); + + trx_sys->rseg_history_len = 0; + + for (i = 0; i < TRX_SYS_N_RSEGS; i++) { + + page_no = trx_sysf_rseg_get_page_no(sys_header, i, mtr); + + if (page_no == FIL_NULL) { + + trx_sys_set_nth_rseg(trx_sys, i, NULL); + } else { + ulint zip_size; + + space = trx_sysf_rseg_get_space(sys_header, i, mtr); + + zip_size = space ? fil_space_get_zip_size(space) : 0; + + trx_rseg_mem_create(i, space, zip_size, page_no, mtr); + } + } +} + +/******************************************************************** +Creates a new rollback segment to the database. */ +UNIV_INTERN +trx_rseg_t* +trx_rseg_create( +/*============*/ + /* out: the created segment object, NULL if + fail */ + ulint space, /* in: space id */ + ulint max_size, /* in: max size in pages */ + ulint* id, /* out: rseg id */ + mtr_t* mtr) /* in: mtr */ +{ + ulint flags; + ulint zip_size; + ulint page_no; + trx_rseg_t* rseg; + + mtr_x_lock(fil_space_get_latch(space, &flags), mtr); + zip_size = dict_table_flags_to_zip_size(flags); + mutex_enter(&kernel_mutex); + + page_no = trx_rseg_header_create(space, zip_size, max_size, id, mtr); + + if (page_no == FIL_NULL) { + + mutex_exit(&kernel_mutex); + return(NULL); + } + + rseg = trx_rseg_mem_create(*id, space, zip_size, page_no, mtr); + + mutex_exit(&kernel_mutex); + + return(rseg); +} === added file 'storage/xtradb/trx/trx0sys.c' --- a/storage/xtradb/trx/trx0sys.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/trx/trx0sys.c 2009-04-25 20:23:06 +0000 @@ -0,0 +1,1391 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Transaction system + +Created 3/26/1996 Heikki Tuuri +*******************************************************/ + +#include "trx0sys.h" + +#ifdef UNIV_NONINL +#include "trx0sys.ic" +#endif + +#include "fsp0fsp.h" +#include "mtr0mtr.h" +#include "trx0trx.h" +#include "trx0rseg.h" +#include "trx0undo.h" +#include "srv0srv.h" +#include "trx0purge.h" +#include "log0log.h" +#include "os0file.h" + +/* The file format tag structure with id and name. */ +struct file_format_struct { + ulint id; /* id of the file format */ + const char* name; /* text representation of the + file format */ + mutex_t mutex; /* covers changes to the above + fields */ +}; + +typedef struct file_format_struct file_format_t; + +/* The transaction system */ +UNIV_INTERN trx_sys_t* trx_sys = NULL; +UNIV_INTERN trx_doublewrite_t* trx_doublewrite = NULL; + +/* The following is set to TRUE when we are upgrading from the old format data +files to the new >= 4.1.x format multiple tablespaces format data files */ + +UNIV_INTERN ibool trx_doublewrite_must_reset_space_ids = FALSE; + +/* The following is TRUE when we are using the database in the new format, +i.e., we have successfully upgraded, or have created a new database +installation */ + +UNIV_INTERN ibool trx_sys_multiple_tablespace_format = FALSE; + +/* In a MySQL replication slave, in crash recovery we store the master log +file name and position here. We have successfully got the updates to InnoDB +up to this position. If .._pos is -1, it means no crash recovery was needed, +or there was no master log position info inside InnoDB. */ + +UNIV_INTERN char trx_sys_mysql_master_log_name[TRX_SYS_MYSQL_MASTER_LOG_NAME_LEN]; +UNIV_INTERN ib_int64_t trx_sys_mysql_master_log_pos = -1; + +UNIV_INTERN char trx_sys_mysql_relay_log_name[TRX_SYS_MYSQL_MASTER_LOG_NAME_LEN]; +UNIV_INTERN ib_int64_t trx_sys_mysql_relay_log_pos = -1; + +/* If this MySQL server uses binary logging, after InnoDB has been inited +and if it has done a crash recovery, we store the binlog file name and position +here. If .._pos is -1, it means there was no binlog position info inside +InnoDB. */ + +UNIV_INTERN char trx_sys_mysql_bin_log_name[TRX_SYS_MYSQL_LOG_NAME_LEN]; +UNIV_INTERN ib_int64_t trx_sys_mysql_bin_log_pos = -1; + +/* List of animal names representing file format. */ +static const char* file_format_name_map[] = { + "Antelope", + "Barracuda", + "Cheetah", + "Dragon", + "Elk", + "Fox", + "Gazelle", + "Hornet", + "Impala", + "Jaguar", + "Kangaroo", + "Leopard", + "Moose", + "Nautilus", + "Ocelot", + "Porpoise", + "Quail", + "Rabbit", + "Shark", + "Tiger", + "Urchin", + "Viper", + "Whale", + "Xenops", + "Yak", + "Zebra" +}; + +/* The number of elements in the file format name array. */ +static const ulint FILE_FORMAT_NAME_N + = sizeof(file_format_name_map) / sizeof(file_format_name_map[0]); + +/* This is used to track the maximum file format id known to InnoDB. It's +updated via SET GLOBAL innodb_file_format_check = 'x' or when we open +or create a table. */ +static file_format_t file_format_max; + +/******************************************************************** +Determines if a page number is located inside the doublewrite buffer. */ +UNIV_INTERN +ibool +trx_doublewrite_page_inside( +/*========================*/ + /* out: TRUE if the location is inside + the two blocks of the doublewrite buffer */ + ulint page_no) /* in: page number */ +{ + if (trx_doublewrite == NULL) { + + return(FALSE); + } + + if (page_no >= trx_doublewrite->block1 + && page_no < trx_doublewrite->block1 + + TRX_SYS_DOUBLEWRITE_BLOCK_SIZE) { + return(TRUE); + } + + if (page_no >= trx_doublewrite->block2 + && page_no < trx_doublewrite->block2 + + TRX_SYS_DOUBLEWRITE_BLOCK_SIZE) { + return(TRUE); + } + + return(FALSE); +} + +/******************************************************************** +Creates or initialializes the doublewrite buffer at a database start. */ +static +void +trx_doublewrite_init( +/*=================*/ + byte* doublewrite) /* in: pointer to the doublewrite buf + header on trx sys page */ +{ + trx_doublewrite = mem_alloc(sizeof(trx_doublewrite_t)); + + /* Since we now start to use the doublewrite buffer, no need to call + fsync() after every write to a data file */ +#ifdef UNIV_DO_FLUSH + os_do_not_call_flush_at_each_write = TRUE; +#endif /* UNIV_DO_FLUSH */ + + mutex_create(&trx_doublewrite->mutex, SYNC_DOUBLEWRITE); + + trx_doublewrite->first_free = 0; + + trx_doublewrite->block1 = mach_read_from_4( + doublewrite + TRX_SYS_DOUBLEWRITE_BLOCK1); + trx_doublewrite->block2 = mach_read_from_4( + doublewrite + TRX_SYS_DOUBLEWRITE_BLOCK2); + trx_doublewrite->write_buf_unaligned = ut_malloc( + (1 + 2 * TRX_SYS_DOUBLEWRITE_BLOCK_SIZE) * UNIV_PAGE_SIZE); + + trx_doublewrite->write_buf = ut_align( + trx_doublewrite->write_buf_unaligned, UNIV_PAGE_SIZE); + trx_doublewrite->buf_block_arr = mem_alloc( + 2 * TRX_SYS_DOUBLEWRITE_BLOCK_SIZE * sizeof(void*)); +} + +/******************************************************************** +Marks the trx sys header when we have successfully upgraded to the >= 4.1.x +multiple tablespace format. */ +UNIV_INTERN +void +trx_sys_mark_upgraded_to_multiple_tablespaces(void) +/*===============================================*/ +{ + buf_block_t* block; + byte* doublewrite; + mtr_t mtr; + + /* We upgraded to 4.1.x and reset the space id fields in the + doublewrite buffer. Let us mark to the trx_sys header that the upgrade + has been done. */ + + mtr_start(&mtr); + + block = buf_page_get(TRX_SYS_SPACE, 0, TRX_SYS_PAGE_NO, + RW_X_LATCH, &mtr); + buf_block_dbg_add_level(block, SYNC_NO_ORDER_CHECK); + + doublewrite = buf_block_get_frame(block) + TRX_SYS_DOUBLEWRITE; + + mlog_write_ulint(doublewrite + TRX_SYS_DOUBLEWRITE_SPACE_ID_STORED, + TRX_SYS_DOUBLEWRITE_SPACE_ID_STORED_N, + MLOG_4BYTES, &mtr); + mtr_commit(&mtr); + + /* Flush the modified pages to disk and make a checkpoint */ + log_make_checkpoint_at(IB_ULONGLONG_MAX, TRUE); + + trx_sys_multiple_tablespace_format = TRUE; +} + +/******************************************************************** +Creates the doublewrite buffer to a new InnoDB installation. The header of the +doublewrite buffer is placed on the trx system header page. */ +UNIV_INTERN +void +trx_sys_create_doublewrite_buf(void) +/*================================*/ +{ + buf_block_t* block; + buf_block_t* block2; + buf_block_t* new_block; + byte* doublewrite; + byte* fseg_header; + ulint page_no; + ulint prev_page_no; + ulint i; + mtr_t mtr; + + if (trx_doublewrite) { + /* Already inited */ + + return; + } + +start_again: + mtr_start(&mtr); + + block = buf_page_get(TRX_SYS_SPACE, 0, TRX_SYS_PAGE_NO, + RW_X_LATCH, &mtr); + buf_block_dbg_add_level(block, SYNC_NO_ORDER_CHECK); + + doublewrite = buf_block_get_frame(block) + TRX_SYS_DOUBLEWRITE; + + if (mach_read_from_4(doublewrite + TRX_SYS_DOUBLEWRITE_MAGIC) + == TRX_SYS_DOUBLEWRITE_MAGIC_N) { + /* The doublewrite buffer has already been created: + just read in some numbers */ + + trx_doublewrite_init(doublewrite); + + mtr_commit(&mtr); + } else { + fprintf(stderr, + "InnoDB: Doublewrite buffer not found:" + " creating new\n"); + + if (buf_pool_get_curr_size() + < ((2 * TRX_SYS_DOUBLEWRITE_BLOCK_SIZE + + FSP_EXTENT_SIZE / 2 + 100) + * UNIV_PAGE_SIZE)) { + fprintf(stderr, + "InnoDB: Cannot create doublewrite buffer:" + " you must\n" + "InnoDB: increase your buffer pool size.\n" + "InnoDB: Cannot continue operation.\n"); + + exit(1); + } + + block2 = fseg_create(TRX_SYS_SPACE, TRX_SYS_PAGE_NO, + TRX_SYS_DOUBLEWRITE + + TRX_SYS_DOUBLEWRITE_FSEG, &mtr); + + /* fseg_create acquires a second latch on the page, + therefore we must declare it: */ + + buf_block_dbg_add_level(block2, SYNC_NO_ORDER_CHECK); + + if (block2 == NULL) { + fprintf(stderr, + "InnoDB: Cannot create doublewrite buffer:" + " you must\n" + "InnoDB: increase your tablespace size.\n" + "InnoDB: Cannot continue operation.\n"); + + /* We exit without committing the mtr to prevent + its modifications to the database getting to disk */ + + exit(1); + } + + fseg_header = buf_block_get_frame(block) + + TRX_SYS_DOUBLEWRITE + TRX_SYS_DOUBLEWRITE_FSEG; + prev_page_no = 0; + + for (i = 0; i < 2 * TRX_SYS_DOUBLEWRITE_BLOCK_SIZE + + FSP_EXTENT_SIZE / 2; i++) { + page_no = fseg_alloc_free_page(fseg_header, + prev_page_no + 1, + FSP_UP, &mtr); + if (page_no == FIL_NULL) { + fprintf(stderr, + "InnoDB: Cannot create doublewrite" + " buffer: you must\n" + "InnoDB: increase your" + " tablespace size.\n" + "InnoDB: Cannot continue operation.\n" + ); + + exit(1); + } + + /* We read the allocated pages to the buffer pool; + when they are written to disk in a flush, the space + id and page number fields are also written to the + pages. When we at database startup read pages + from the doublewrite buffer, we know that if the + space id and page number in them are the same as + the page position in the tablespace, then the page + has not been written to in doublewrite. */ + + new_block = buf_page_get(TRX_SYS_SPACE, 0, page_no, + RW_X_LATCH, &mtr); + buf_block_dbg_add_level(new_block, + SYNC_NO_ORDER_CHECK); + + /* Make a dummy change to the page to ensure it will + be written to disk in a flush */ + + mlog_write_ulint(buf_block_get_frame(new_block) + + FIL_PAGE_DATA, + TRX_SYS_DOUBLEWRITE_MAGIC_N, + MLOG_4BYTES, &mtr); + + if (i == FSP_EXTENT_SIZE / 2) { + mlog_write_ulint(doublewrite + + TRX_SYS_DOUBLEWRITE_BLOCK1, + page_no, MLOG_4BYTES, &mtr); + mlog_write_ulint(doublewrite + + TRX_SYS_DOUBLEWRITE_REPEAT + + TRX_SYS_DOUBLEWRITE_BLOCK1, + page_no, MLOG_4BYTES, &mtr); + } else if (i == FSP_EXTENT_SIZE / 2 + + TRX_SYS_DOUBLEWRITE_BLOCK_SIZE) { + mlog_write_ulint(doublewrite + + TRX_SYS_DOUBLEWRITE_BLOCK2, + page_no, MLOG_4BYTES, &mtr); + mlog_write_ulint(doublewrite + + TRX_SYS_DOUBLEWRITE_REPEAT + + TRX_SYS_DOUBLEWRITE_BLOCK2, + page_no, MLOG_4BYTES, &mtr); + } else if (i > FSP_EXTENT_SIZE / 2) { + ut_a(page_no == prev_page_no + 1); + } + + prev_page_no = page_no; + } + + mlog_write_ulint(doublewrite + TRX_SYS_DOUBLEWRITE_MAGIC, + TRX_SYS_DOUBLEWRITE_MAGIC_N, + MLOG_4BYTES, &mtr); + mlog_write_ulint(doublewrite + TRX_SYS_DOUBLEWRITE_MAGIC + + TRX_SYS_DOUBLEWRITE_REPEAT, + TRX_SYS_DOUBLEWRITE_MAGIC_N, + MLOG_4BYTES, &mtr); + + mlog_write_ulint(doublewrite + + TRX_SYS_DOUBLEWRITE_SPACE_ID_STORED, + TRX_SYS_DOUBLEWRITE_SPACE_ID_STORED_N, + MLOG_4BYTES, &mtr); + mtr_commit(&mtr); + + /* Flush the modified pages to disk and make a checkpoint */ + log_make_checkpoint_at(IB_ULONGLONG_MAX, TRUE); + + fprintf(stderr, "InnoDB: Doublewrite buffer created\n"); + + trx_sys_multiple_tablespace_format = TRUE; + + goto start_again; + } +} + +/******************************************************************** +At a database startup initializes the doublewrite buffer memory structure if +we already have a doublewrite buffer created in the data files. If we are +upgrading to an InnoDB version which supports multiple tablespaces, then this +function performs the necessary update operations. If we are in a crash +recovery, this function uses a possible doublewrite buffer to restore +half-written pages in the data files. */ +UNIV_INTERN +void +trx_sys_doublewrite_init_or_restore_pages( +/*======================================*/ + ibool restore_corrupt_pages) +{ + byte* buf; + byte* read_buf; + byte* unaligned_read_buf; + ulint block1; + ulint block2; + ulint source_page_no; + byte* page; + byte* doublewrite; + ulint space_id; + ulint page_no; + ulint i; + + /* We do the file i/o past the buffer pool */ + + unaligned_read_buf = ut_malloc(2 * UNIV_PAGE_SIZE); + read_buf = ut_align(unaligned_read_buf, UNIV_PAGE_SIZE); + + /* Read the trx sys header to check if we are using the doublewrite + buffer */ + + fil_io(OS_FILE_READ, TRUE, TRX_SYS_SPACE, 0, TRX_SYS_PAGE_NO, 0, + UNIV_PAGE_SIZE, read_buf, NULL); + doublewrite = read_buf + TRX_SYS_DOUBLEWRITE; + + if (mach_read_from_4(doublewrite + TRX_SYS_DOUBLEWRITE_MAGIC) + == TRX_SYS_DOUBLEWRITE_MAGIC_N) { + /* The doublewrite buffer has been created */ + + trx_doublewrite_init(doublewrite); + + block1 = trx_doublewrite->block1; + block2 = trx_doublewrite->block2; + + buf = trx_doublewrite->write_buf; + } else { + goto leave_func; + } + + if (mach_read_from_4(doublewrite + TRX_SYS_DOUBLEWRITE_SPACE_ID_STORED) + != TRX_SYS_DOUBLEWRITE_SPACE_ID_STORED_N) { + + /* We are upgrading from a version < 4.1.x to a version where + multiple tablespaces are supported. We must reset the space id + field in the pages in the doublewrite buffer because starting + from this version the space id is stored to + FIL_PAGE_ARCH_LOG_NO_OR_SPACE_ID. */ + + trx_doublewrite_must_reset_space_ids = TRUE; + + fprintf(stderr, + "InnoDB: Resetting space id's in the" + " doublewrite buffer\n"); + } else { + trx_sys_multiple_tablespace_format = TRUE; + } + + /* Read the pages from the doublewrite buffer to memory */ + + fil_io(OS_FILE_READ, TRUE, TRX_SYS_SPACE, 0, block1, 0, + TRX_SYS_DOUBLEWRITE_BLOCK_SIZE * UNIV_PAGE_SIZE, + buf, NULL); + fil_io(OS_FILE_READ, TRUE, TRX_SYS_SPACE, 0, block2, 0, + TRX_SYS_DOUBLEWRITE_BLOCK_SIZE * UNIV_PAGE_SIZE, + buf + TRX_SYS_DOUBLEWRITE_BLOCK_SIZE * UNIV_PAGE_SIZE, + NULL); + /* Check if any of these pages is half-written in data files, in the + intended position */ + + page = buf; + + for (i = 0; i < TRX_SYS_DOUBLEWRITE_BLOCK_SIZE * 2; i++) { + + page_no = mach_read_from_4(page + FIL_PAGE_OFFSET); + + if (trx_doublewrite_must_reset_space_ids) { + + space_id = 0; + mach_write_to_4(page + + FIL_PAGE_ARCH_LOG_NO_OR_SPACE_ID, 0); + /* We do not need to calculate new checksums for the + pages because the field .._SPACE_ID does not affect + them. Write the page back to where we read it from. */ + + if (i < TRX_SYS_DOUBLEWRITE_BLOCK_SIZE) { + source_page_no = block1 + i; + } else { + source_page_no = block2 + + i - TRX_SYS_DOUBLEWRITE_BLOCK_SIZE; + } + + fil_io(OS_FILE_WRITE, TRUE, 0, 0, source_page_no, 0, + UNIV_PAGE_SIZE, page, NULL); + /* printf("Resetting space id in page %lu\n", + source_page_no); */ + } else { + space_id = mach_read_from_4( + page + FIL_PAGE_ARCH_LOG_NO_OR_SPACE_ID); + } + + if (!restore_corrupt_pages) { + /* The database was shut down gracefully: no need to + restore pages */ + + } else if (!fil_tablespace_exists_in_mem(space_id)) { + /* Maybe we have dropped the single-table tablespace + and this page once belonged to it: do nothing */ + + } else if (!fil_check_adress_in_tablespace(space_id, + page_no)) { + fprintf(stderr, + "InnoDB: Warning: a page in the" + " doublewrite buffer is not within space\n" + "InnoDB: bounds; space id %lu" + " page number %lu, page %lu in" + " doublewrite buf.\n", + (ulong) space_id, (ulong) page_no, (ulong) i); + + } else if (space_id == TRX_SYS_SPACE + && ((page_no >= block1 + && page_no + < block1 + TRX_SYS_DOUBLEWRITE_BLOCK_SIZE) + || (page_no >= block2 + && page_no + < (block2 + + TRX_SYS_DOUBLEWRITE_BLOCK_SIZE)))) { + + /* It is an unwritten doublewrite buffer page: + do nothing */ + } else { + ulint zip_size = fil_space_get_zip_size(space_id); + + /* Read in the actual page from the file */ + fil_io(OS_FILE_READ, TRUE, space_id, zip_size, + page_no, 0, + zip_size ? zip_size : UNIV_PAGE_SIZE, + read_buf, NULL); + + /* Check if the page is corrupt */ + + if (UNIV_UNLIKELY + (buf_page_is_corrupted(read_buf, zip_size))) { + + fprintf(stderr, + "InnoDB: Warning: database page" + " corruption or a failed\n" + "InnoDB: file read of" + " space %lu page %lu.\n" + "InnoDB: Trying to recover it from" + " the doublewrite buffer.\n", + (ulong) space_id, (ulong) page_no); + + if (buf_page_is_corrupted(page, zip_size)) { + fprintf(stderr, + "InnoDB: Dump of the page:\n"); + buf_page_print(read_buf, zip_size); + fprintf(stderr, + "InnoDB: Dump of" + " corresponding page" + " in doublewrite buffer:\n"); + buf_page_print(page, zip_size); + + fprintf(stderr, + "InnoDB: Also the page in the" + " doublewrite buffer" + " is corrupt.\n" + "InnoDB: Cannot continue" + " operation.\n" + "InnoDB: You can try to" + " recover the database" + " with the my.cnf\n" + "InnoDB: option:\n" + "InnoDB: set-variable=" + "innodb_force_recovery=6\n"); + exit(1); + } + + /* Write the good page from the + doublewrite buffer to the intended + position */ + + fil_io(OS_FILE_WRITE, TRUE, space_id, + zip_size, page_no, 0, + zip_size ? zip_size : UNIV_PAGE_SIZE, + page, NULL); + fprintf(stderr, + "InnoDB: Recovered the page from" + " the doublewrite buffer.\n"); + } + } + + page += UNIV_PAGE_SIZE; + } + + fil_flush_file_spaces(FIL_TABLESPACE); + +leave_func: + ut_free(unaligned_read_buf); +} + +/******************************************************************** +Checks that trx is in the trx list. */ +UNIV_INTERN +ibool +trx_in_trx_list( +/*============*/ + /* out: TRUE if is in */ + trx_t* in_trx) /* in: trx */ +{ + trx_t* trx; + + ut_ad(mutex_own(&(kernel_mutex))); + + trx = UT_LIST_GET_FIRST(trx_sys->trx_list); + + while (trx != NULL) { + + if (trx == in_trx) { + + return(TRUE); + } + + trx = UT_LIST_GET_NEXT(trx_list, trx); + } + + return(FALSE); +} + +/********************************************************************* +Writes the value of max_trx_id to the file based trx system header. */ +UNIV_INTERN +void +trx_sys_flush_max_trx_id(void) +/*==========================*/ +{ + trx_sysf_t* sys_header; + mtr_t mtr; + + ut_ad(mutex_own(&kernel_mutex)); + + mtr_start(&mtr); + + sys_header = trx_sysf_get(&mtr); + + mlog_write_dulint(sys_header + TRX_SYS_TRX_ID_STORE, + trx_sys->max_trx_id, &mtr); + mtr_commit(&mtr); +} + +/********************************************************************* +Updates the offset information about the end of the MySQL binlog entry +which corresponds to the transaction just being committed. In a MySQL +replication slave updates the latest master binlog position up to which +replication has proceeded. */ +UNIV_INTERN +void +trx_sys_update_mysql_binlog_offset( +/*===============================*/ + const char* file_name_in,/* in: MySQL log file name */ + ib_int64_t offset, /* in: position in that log file */ + ulint field, /* in: offset of the MySQL log info field in + the trx sys header */ + mtr_t* mtr) /* in: mtr */ +{ + trx_sysf_t* sys_header; + const char* file_name; + + if (ut_strlen(file_name_in) >= TRX_SYS_MYSQL_MASTER_LOG_NAME_LEN) { + + /* We cannot fit the name to the 512 bytes we have reserved */ + /* -> To store relay log file information, file_name must fit to the 480 bytes */ + + file_name = ""; + } + else { + file_name = file_name_in; + } + + sys_header = trx_sysf_get(mtr); + + if (mach_read_from_4(sys_header + field + + TRX_SYS_MYSQL_LOG_MAGIC_N_FLD) + != TRX_SYS_MYSQL_LOG_MAGIC_N) { + + mlog_write_ulint(sys_header + field + + TRX_SYS_MYSQL_LOG_MAGIC_N_FLD, + TRX_SYS_MYSQL_LOG_MAGIC_N, + MLOG_4BYTES, mtr); + } + + if (0 != strcmp((char*) (sys_header + field + TRX_SYS_MYSQL_LOG_NAME), + file_name)) { + + mlog_write_string(sys_header + field + + TRX_SYS_MYSQL_LOG_NAME, + (byte*) file_name, 1 + ut_strlen(file_name), + mtr); + } + + if (mach_read_from_4(sys_header + field + + TRX_SYS_MYSQL_LOG_OFFSET_HIGH) > 0 + || (offset >> 32) > 0) { + + mlog_write_ulint(sys_header + field + + TRX_SYS_MYSQL_LOG_OFFSET_HIGH, + (ulint)(offset >> 32), + MLOG_4BYTES, mtr); + } + + mlog_write_ulint(sys_header + field + + TRX_SYS_MYSQL_LOG_OFFSET_LOW, + (ulint)(offset & 0xFFFFFFFFUL), + MLOG_4BYTES, mtr); +} + +#ifdef UNIV_HOTBACKUP +/********************************************************************* +Prints to stderr the MySQL binlog info in the system header if the +magic number shows it valid. */ +UNIV_INTERN +void +trx_sys_print_mysql_binlog_offset_from_page( +/*========================================*/ + const byte* page) /* in: buffer containing the trx + system header page, i.e., page number + TRX_SYS_PAGE_NO in the tablespace */ +{ + const trx_sysf_t* sys_header; + + sys_header = page + TRX_SYS; + + if (mach_read_from_4(sys_header + TRX_SYS_MYSQL_LOG_INFO + + TRX_SYS_MYSQL_LOG_MAGIC_N_FLD) + == TRX_SYS_MYSQL_LOG_MAGIC_N) { + + fprintf(stderr, + "ibbackup: Last MySQL binlog file position %lu %lu," + " file name %s\n", + (ulong) mach_read_from_4( + sys_header + TRX_SYS_MYSQL_LOG_INFO + + TRX_SYS_MYSQL_LOG_OFFSET_HIGH), + (ulong) mach_read_from_4( + sys_header + TRX_SYS_MYSQL_LOG_INFO + + TRX_SYS_MYSQL_LOG_OFFSET_LOW), + sys_header + TRX_SYS_MYSQL_LOG_INFO + + TRX_SYS_MYSQL_LOG_NAME); + } +} +#endif /* UNIV_HOTBACKUP */ + +/********************************************************************* +Stores the MySQL binlog offset info in the trx system header if +the magic number shows it valid, and print the info to stderr */ +UNIV_INTERN +void +trx_sys_print_mysql_binlog_offset(void) +/*===================================*/ +{ + trx_sysf_t* sys_header; + mtr_t mtr; + ulint trx_sys_mysql_bin_log_pos_high; + ulint trx_sys_mysql_bin_log_pos_low; + + mtr_start(&mtr); + + sys_header = trx_sysf_get(&mtr); + + if (mach_read_from_4(sys_header + TRX_SYS_MYSQL_LOG_INFO + + TRX_SYS_MYSQL_LOG_MAGIC_N_FLD) + != TRX_SYS_MYSQL_LOG_MAGIC_N) { + + mtr_commit(&mtr); + + return; + } + + trx_sys_mysql_bin_log_pos_high = mach_read_from_4( + sys_header + TRX_SYS_MYSQL_LOG_INFO + + TRX_SYS_MYSQL_LOG_OFFSET_HIGH); + trx_sys_mysql_bin_log_pos_low = mach_read_from_4( + sys_header + TRX_SYS_MYSQL_LOG_INFO + + TRX_SYS_MYSQL_LOG_OFFSET_LOW); + + trx_sys_mysql_bin_log_pos + = (((ib_int64_t)trx_sys_mysql_bin_log_pos_high) << 32) + + (ib_int64_t)trx_sys_mysql_bin_log_pos_low; + + ut_memcpy(trx_sys_mysql_bin_log_name, + sys_header + TRX_SYS_MYSQL_LOG_INFO + + TRX_SYS_MYSQL_LOG_NAME, TRX_SYS_MYSQL_LOG_NAME_LEN); + + fprintf(stderr, + "InnoDB: Last MySQL binlog file position %lu %lu," + " file name %s\n", + trx_sys_mysql_bin_log_pos_high, trx_sys_mysql_bin_log_pos_low, + trx_sys_mysql_bin_log_name); + + mtr_commit(&mtr); +} + +/********************************************************************* +Prints to stderr the MySQL master log offset info in the trx system header if +the magic number shows it valid. */ +UNIV_INTERN +void +trx_sys_print_mysql_master_log_pos(void) +/*====================================*/ +{ + trx_sysf_t* sys_header; + mtr_t mtr; + + mtr_start(&mtr); + + sys_header = trx_sysf_get(&mtr); + + if (mach_read_from_4(sys_header + TRX_SYS_MYSQL_MASTER_LOG_INFO + + TRX_SYS_MYSQL_LOG_MAGIC_N_FLD) + != TRX_SYS_MYSQL_LOG_MAGIC_N) { + + mtr_commit(&mtr); + + return; + } + + fprintf(stderr, + "InnoDB: In a MySQL replication slave the last" + " master binlog file\n" + "InnoDB: position %lu %lu, file name %s\n", + (ulong) mach_read_from_4(sys_header + + TRX_SYS_MYSQL_MASTER_LOG_INFO + + TRX_SYS_MYSQL_LOG_OFFSET_HIGH), + (ulong) mach_read_from_4(sys_header + + TRX_SYS_MYSQL_MASTER_LOG_INFO + + TRX_SYS_MYSQL_LOG_OFFSET_LOW), + sys_header + TRX_SYS_MYSQL_MASTER_LOG_INFO + + TRX_SYS_MYSQL_LOG_NAME); + + fprintf(stderr, + "InnoDB: and relay log file\n" + "InnoDB: position %lu %lu, file name %s\n", + (ulong) mach_read_from_4(sys_header + + TRX_SYS_MYSQL_RELAY_LOG_INFO + + TRX_SYS_MYSQL_LOG_OFFSET_HIGH), + (ulong) mach_read_from_4(sys_header + + TRX_SYS_MYSQL_RELAY_LOG_INFO + + TRX_SYS_MYSQL_LOG_OFFSET_LOW), + sys_header + TRX_SYS_MYSQL_RELAY_LOG_INFO + + TRX_SYS_MYSQL_LOG_NAME); + + /* Copy the master log position info to global variables we can + use in ha_innobase.cc to initialize glob_mi to right values */ + + ut_memcpy(trx_sys_mysql_master_log_name, + sys_header + TRX_SYS_MYSQL_MASTER_LOG_INFO + + TRX_SYS_MYSQL_LOG_NAME, + TRX_SYS_MYSQL_MASTER_LOG_NAME_LEN); + + trx_sys_mysql_master_log_pos + = (((ib_int64_t) mach_read_from_4( + sys_header + TRX_SYS_MYSQL_MASTER_LOG_INFO + + TRX_SYS_MYSQL_LOG_OFFSET_HIGH)) << 32) + + ((ib_int64_t) mach_read_from_4( + sys_header + TRX_SYS_MYSQL_MASTER_LOG_INFO + + TRX_SYS_MYSQL_LOG_OFFSET_LOW)); + + ut_memcpy(trx_sys_mysql_relay_log_name, + sys_header + TRX_SYS_MYSQL_RELAY_LOG_INFO + + TRX_SYS_MYSQL_LOG_NAME, + TRX_SYS_MYSQL_MASTER_LOG_NAME_LEN); + + trx_sys_mysql_relay_log_pos + = (((ib_int64_t) mach_read_from_4( + sys_header + TRX_SYS_MYSQL_RELAY_LOG_INFO + + TRX_SYS_MYSQL_LOG_OFFSET_HIGH)) << 32) + + ((ib_int64_t) mach_read_from_4( + sys_header + TRX_SYS_MYSQL_RELAY_LOG_INFO + + TRX_SYS_MYSQL_LOG_OFFSET_LOW)); + mtr_commit(&mtr); +} + +/******************************************************************** +Looks for a free slot for a rollback segment in the trx system file copy. */ +UNIV_INTERN +ulint +trx_sysf_rseg_find_free( +/*====================*/ + /* out: slot index or ULINT_UNDEFINED if not found */ + mtr_t* mtr) /* in: mtr */ +{ + trx_sysf_t* sys_header; + ulint page_no; + ulint i; + + ut_ad(mutex_own(&(kernel_mutex))); + + sys_header = trx_sysf_get(mtr); + + for (i = 0; i < TRX_SYS_N_RSEGS; i++) { + + page_no = trx_sysf_rseg_get_page_no(sys_header, i, mtr); + + if (page_no == FIL_NULL) { + + return(i); + } + } + + return(ULINT_UNDEFINED); +} + +/********************************************************************* +Creates the file page for the transaction system. This function is called only +at the database creation, before trx_sys_init. */ +static +void +trx_sysf_create( +/*============*/ + mtr_t* mtr) /* in: mtr */ +{ + trx_sysf_t* sys_header; + ulint slot_no; + buf_block_t* block; + page_t* page; + ulint page_no; + ulint i; + + ut_ad(mtr); + + /* Note that below we first reserve the file space x-latch, and + then enter the kernel: we must do it in this order to conform + to the latching order rules. */ + + mtr_x_lock(fil_space_get_latch(TRX_SYS_SPACE, NULL), mtr); + mutex_enter(&kernel_mutex); + + /* Create the trx sys file block in a new allocated file segment */ + block = fseg_create(TRX_SYS_SPACE, 0, TRX_SYS + TRX_SYS_FSEG_HEADER, + mtr); + buf_block_dbg_add_level(block, SYNC_TRX_SYS_HEADER); + + ut_a(buf_block_get_page_no(block) == TRX_SYS_PAGE_NO); + + page = buf_block_get_frame(block); + + mlog_write_ulint(page + FIL_PAGE_TYPE, FIL_PAGE_TYPE_TRX_SYS, + MLOG_2BYTES, mtr); + + /* Reset the doublewrite buffer magic number to zero so that we + know that the doublewrite buffer has not yet been created (this + suppresses a Valgrind warning) */ + + mlog_write_ulint(page + TRX_SYS_DOUBLEWRITE + + TRX_SYS_DOUBLEWRITE_MAGIC, 0, MLOG_4BYTES, mtr); + + sys_header = trx_sysf_get(mtr); + + /* Start counting transaction ids from number 1 up */ + mlog_write_dulint(sys_header + TRX_SYS_TRX_ID_STORE, + ut_dulint_create(0, 1), mtr); + + /* Reset the rollback segment slots */ + for (i = 0; i < TRX_SYS_N_RSEGS; i++) { + + trx_sysf_rseg_set_space(sys_header, i, ULINT_UNDEFINED, mtr); + trx_sysf_rseg_set_page_no(sys_header, i, FIL_NULL, mtr); + } + + /* The remaining area (up to the page trailer) is uninitialized. + Silence Valgrind warnings about it. */ + UNIV_MEM_VALID(sys_header + (TRX_SYS_RSEGS + + TRX_SYS_N_RSEGS * TRX_SYS_RSEG_SLOT_SIZE + + TRX_SYS_RSEG_SPACE), + (UNIV_PAGE_SIZE - FIL_PAGE_DATA_END + - (TRX_SYS_RSEGS + + TRX_SYS_N_RSEGS * TRX_SYS_RSEG_SLOT_SIZE + + TRX_SYS_RSEG_SPACE)) + + page - sys_header); + + /* Create the first rollback segment in the SYSTEM tablespace */ + page_no = trx_rseg_header_create(TRX_SYS_SPACE, 0, ULINT_MAX, &slot_no, + mtr); + ut_a(slot_no == TRX_SYS_SYSTEM_RSEG_ID); + ut_a(page_no != FIL_NULL); + + mutex_exit(&kernel_mutex); +} + +/********************************************************************* +Creates and initializes the central memory structures for the transaction +system. This is called when the database is started. */ +UNIV_INTERN +void +trx_sys_init_at_db_start(void) +/*==========================*/ +{ + trx_sysf_t* sys_header; + ib_int64_t rows_to_undo = 0; + const char* unit = ""; + trx_t* trx; + mtr_t mtr; + + mtr_start(&mtr); + + ut_ad(trx_sys == NULL); + + mutex_enter(&kernel_mutex); + + trx_sys = mem_alloc(sizeof(trx_sys_t)); + + sys_header = trx_sysf_get(&mtr); + + trx_rseg_list_and_array_init(sys_header, &mtr); + + trx_sys->latest_rseg = UT_LIST_GET_FIRST(trx_sys->rseg_list); + + /* VERY important: after the database is started, max_trx_id value is + divisible by TRX_SYS_TRX_ID_WRITE_MARGIN, and the 'if' in + trx_sys_get_new_trx_id will evaluate to TRUE when the function + is first time called, and the value for trx id will be written + to the disk-based header! Thus trx id values will not overlap when + the database is repeatedly started! */ + + trx_sys->max_trx_id = ut_dulint_add( + ut_dulint_align_up(mtr_read_dulint( + sys_header + + TRX_SYS_TRX_ID_STORE, &mtr), + TRX_SYS_TRX_ID_WRITE_MARGIN), + 2 * TRX_SYS_TRX_ID_WRITE_MARGIN); + + UT_LIST_INIT(trx_sys->mysql_trx_list); + trx_dummy_sess = sess_open(); + trx_lists_init_at_db_start(); + + if (UT_LIST_GET_LEN(trx_sys->trx_list) > 0) { + trx = UT_LIST_GET_FIRST(trx_sys->trx_list); + + for (;;) { + + if ( trx->conc_state != TRX_PREPARED) { + rows_to_undo += ut_conv_dulint_to_longlong( + trx->undo_no); + } + + trx = UT_LIST_GET_NEXT(trx_list, trx); + + if (!trx) { + break; + } + } + + if (rows_to_undo > 1000000000) { + unit = "M"; + rows_to_undo = rows_to_undo / 1000000; + } + + fprintf(stderr, + "InnoDB: %lu transaction(s) which must be" + " rolled back or cleaned up\n" + "InnoDB: in total %lu%s row operations to undo\n", + (ulong) UT_LIST_GET_LEN(trx_sys->trx_list), + (ulong) rows_to_undo, unit); + + fprintf(stderr, "InnoDB: Trx id counter is " TRX_ID_FMT "\n", + TRX_ID_PREP_PRINTF(trx_sys->max_trx_id)); + } + + UT_LIST_INIT(trx_sys->view_list); + + trx_purge_sys_create(); + + mutex_exit(&kernel_mutex); + + mtr_commit(&mtr); +} + +/********************************************************************* +Creates and initializes the transaction system at the database creation. */ +UNIV_INTERN +void +trx_sys_create(void) +/*================*/ +{ + mtr_t mtr; + + mtr_start(&mtr); + + trx_sysf_create(&mtr); + + mtr_commit(&mtr); + + trx_sys_init_at_db_start(); +} + +/********************************************************************* +Create extra rollback segments when create_new_db */ +UNIV_INTERN +void +trx_sys_create_extra_rseg( +/*======================*/ + ulint num) /* in: number of extra user rollback segments */ +{ + mtr_t mtr; + ulint slot_no; + ulint i; + + /* Craete extra rollback segments */ + mtr_start(&mtr); + for (i = 1; i < num + 1; i++) { + if(!trx_rseg_create(TRX_SYS_SPACE, ULINT_MAX, &slot_no, &mtr)) { + fprintf(stderr, +"InnoDB: Warning: Failed to create extra rollback segments.\n"); + break; + } + ut_a(slot_no == i); + } + mtr_commit(&mtr); +} + +/********************************************************************* +Update the file format tag. */ +static +ibool +trx_sys_file_format_max_write( +/*==========================*/ + /* out: always TRUE */ + ulint format_id, /* in: file format id */ + const char** name) /* out: max file format name, can + be NULL */ +{ + mtr_t mtr; + byte* ptr; + buf_block_t* block; + ulint tag_value_low; + + mtr_start(&mtr); + + block = buf_page_get( + TRX_SYS_SPACE, 0, TRX_SYS_PAGE_NO, RW_X_LATCH, &mtr); + + file_format_max.id = format_id; + file_format_max.name = trx_sys_file_format_id_to_name(format_id); + + ptr = buf_block_get_frame(block) + TRX_SYS_FILE_FORMAT_TAG; + tag_value_low = format_id + TRX_SYS_FILE_FORMAT_TAG_MAGIC_N_LOW; + + if (name) { + *name = file_format_max.name; + } + + mlog_write_dulint( + ptr, + ut_dulint_create(TRX_SYS_FILE_FORMAT_TAG_MAGIC_N_HIGH, + tag_value_low), + &mtr); + + mtr_commit(&mtr); + + return(TRUE); +} + +/********************************************************************* +Read the file format tag. */ +static +ulint +trx_sys_file_format_max_read(void) +/*==============================*/ + /* out: the file format or + ULINT_UNDEFINED if not set. */ +{ + mtr_t mtr; + const byte* ptr; + const buf_block_t* block; + ulint format_id; + dulint file_format_id; + + /* Since this is called during the startup phase it's safe to + read the value without a covering mutex. */ + mtr_start(&mtr); + + block = buf_page_get( + TRX_SYS_SPACE, 0, TRX_SYS_PAGE_NO, RW_X_LATCH, &mtr); + + ptr = buf_block_get_frame(block) + TRX_SYS_FILE_FORMAT_TAG; + file_format_id = mach_read_from_8(ptr); + + mtr_commit(&mtr); + + format_id = file_format_id.low - TRX_SYS_FILE_FORMAT_TAG_MAGIC_N_LOW; + + if (file_format_id.high != TRX_SYS_FILE_FORMAT_TAG_MAGIC_N_HIGH + || format_id >= FILE_FORMAT_NAME_N) { + + /* Either it has never been tagged, or garbage in it. */ + return(ULINT_UNDEFINED); + } + + return(format_id); +} + +/********************************************************************* +Get the name representation of the file format from its id. */ +UNIV_INTERN +const char* +trx_sys_file_format_id_to_name( +/*===========================*/ + /* out: pointer to the name */ + const ulint id) /* in: id of the file format */ +{ + ut_a(id < FILE_FORMAT_NAME_N); + + return(file_format_name_map[id]); +} + +/********************************************************************* +Check for the max file format tag stored on disk. Note: If max_format_id +is == DICT_TF_FORMAT_MAX + 1 then we only print a warning. */ +UNIV_INTERN +ulint +trx_sys_file_format_max_check( +/*==========================*/ + /* out: DB_SUCCESS or error code */ + ulint max_format_id) /* in: max format id to check */ +{ + ulint format_id; + + /* Check the file format in the tablespace. Do not try to + recover if the file format is not supported by the engine + unless forced by the user. */ + format_id = trx_sys_file_format_max_read(); + if (format_id == ULINT_UNDEFINED) { + /* Format ID was not set. Set it to minimum possible + value. */ + format_id = DICT_TF_FORMAT_51; + } + + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: highest supported file format is %s.\n", + trx_sys_file_format_id_to_name(DICT_TF_FORMAT_MAX)); + + if (format_id > DICT_TF_FORMAT_MAX) { + + ut_a(format_id < FILE_FORMAT_NAME_N); + + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: %s: the system tablespace is in a file " + "format that this version doesn't support - %s\n", + ((max_format_id <= DICT_TF_FORMAT_MAX) + ? "Error" : "Warning"), + trx_sys_file_format_id_to_name(format_id)); + + if (max_format_id <= DICT_TF_FORMAT_MAX) { + return(DB_ERROR); + } + } + + format_id = (format_id > max_format_id) ? format_id : max_format_id; + + /* We don't need a mutex here, as this function should only + be called once at start up. */ + file_format_max.id = format_id; + file_format_max.name = trx_sys_file_format_id_to_name(format_id); + + return(DB_SUCCESS); +} + +/********************************************************************* +Set the file format id unconditionally except if it's already the +same value. */ +UNIV_INTERN +ibool +trx_sys_file_format_max_set( +/*========================*/ + /* out: TRUE if value updated */ + ulint format_id, /* in: file format id */ + const char** name) /* out: max file format name or + NULL if not needed. */ +{ + ibool ret = FALSE; + + ut_a(format_id <= DICT_TF_FORMAT_MAX); + + mutex_enter(&file_format_max.mutex); + + /* Only update if not already same value. */ + if (format_id != file_format_max.id) { + + ret = trx_sys_file_format_max_write(format_id, name); + } + + mutex_exit(&file_format_max.mutex); + + return(ret); +} + +/************************************************************************ +Tags the system table space with minimum format id if it has not been +tagged yet. +WARNING: This function is only called during the startup and AFTER the +redo log application during recovery has finished. */ +UNIV_INTERN +void +trx_sys_file_format_tag_init(void) +/*==============================*/ +{ + ulint format_id; + + format_id = trx_sys_file_format_max_read(); + + /* If format_id is not set then set it to the minimum. */ + if (format_id == ULINT_UNDEFINED) { + trx_sys_file_format_max_set(DICT_TF_FORMAT_51, NULL); + } +} + +/************************************************************************ +Update the file format tag in the system tablespace only if the given +format id is greater than the known max id. */ +UNIV_INTERN +ibool +trx_sys_file_format_max_upgrade( +/*============================*/ + /* out: TRUE if format_id was + bigger than the known max id */ + const char** name, /* out: max file format name */ + ulint format_id) /* in: file format identifier */ +{ + ibool ret = FALSE; + + ut_a(name); + ut_a(file_format_max.name != NULL); + ut_a(format_id <= DICT_TF_FORMAT_MAX); + + mutex_enter(&file_format_max.mutex); + + if (format_id > file_format_max.id) { + + ret = trx_sys_file_format_max_write(format_id, name); + } + + mutex_exit(&file_format_max.mutex); + + return(ret); +} + +/********************************************************************* +Get the name representation of the file format from its id. */ +UNIV_INTERN +const char* +trx_sys_file_format_max_get(void) +/*=============================*/ + /* out: pointer to the max format name */ +{ + return(file_format_max.name); +} + +/********************************************************************* +Initializes the tablespace tag system. */ +UNIV_INTERN +void +trx_sys_file_format_init(void) +/*==========================*/ +{ + mutex_create(&file_format_max.mutex, SYNC_FILE_FORMAT_TAG); + + /* We don't need a mutex here, as this function should only + be called once at start up. */ + file_format_max.id = DICT_TF_FORMAT_51; + + file_format_max.name = trx_sys_file_format_id_to_name( + file_format_max.id); +} + +/********************************************************************* +Closes the tablespace tag system. */ +UNIV_INTERN +void +trx_sys_file_format_close(void) +/*===========================*/ +{ + /* Does nothing at the moment */ +} === added file 'storage/xtradb/trx/trx0trx.c' --- a/storage/xtradb/trx/trx0trx.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/trx/trx0trx.c 2009-04-07 20:51:15 +0000 @@ -0,0 +1,2082 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +The transaction + +Created 3/26/1996 Heikki Tuuri +*******************************************************/ + +#include "trx0trx.h" + +#ifdef UNIV_NONINL +#include "trx0trx.ic" +#endif + +#include "trx0undo.h" +#include "trx0rseg.h" +#include "log0log.h" +#include "que0que.h" +#include "lock0lock.h" +#include "trx0roll.h" +#include "usr0sess.h" +#include "read0read.h" +#include "srv0srv.h" +#include "thr0loc.h" +#include "btr0sea.h" +#include "os0proc.h" +#include "trx0xa.h" +#include "ha_prototypes.h" + +/* Dummy session used currently in MySQL interface */ +UNIV_INTERN sess_t* trx_dummy_sess = NULL; + +/* Number of transactions currently allocated for MySQL: protected by +the kernel mutex */ +UNIV_INTERN ulint trx_n_mysql_transactions = 0; + +/***************************************************************** +Set detailed error message for the transaction. */ +UNIV_INTERN +void +trx_set_detailed_error( +/*===================*/ + trx_t* trx, /* in: transaction struct */ + const char* msg) /* in: detailed error message */ +{ + ut_strlcpy(trx->detailed_error, msg, sizeof(trx->detailed_error)); +} + +/***************************************************************** +Set detailed error message for the transaction from a file. Note that the +file is rewinded before reading from it. */ +UNIV_INTERN +void +trx_set_detailed_error_from_file( +/*=============================*/ + trx_t* trx, /* in: transaction struct */ + FILE* file) /* in: file to read message from */ +{ + os_file_read_string(file, trx->detailed_error, + sizeof(trx->detailed_error)); +} + +/******************************************************************** +Creates and initializes a transaction object. */ +UNIV_INTERN +trx_t* +trx_create( +/*=======*/ + /* out, own: the transaction */ + sess_t* sess) /* in: session */ +{ + trx_t* trx; + + ut_ad(mutex_own(&kernel_mutex)); + ut_ad(sess); + + trx = mem_alloc(sizeof(trx_t)); + + trx->magic_n = TRX_MAGIC_N; + + trx->op_info = ""; + + trx->is_purge = 0; + trx->is_recovered = 0; + trx->conc_state = TRX_NOT_STARTED; + trx->start_time = time(NULL); + + trx->isolation_level = TRX_ISO_REPEATABLE_READ; + + trx->id = ut_dulint_zero; + trx->no = ut_dulint_max; + + trx->support_xa = TRUE; + + trx->check_foreigns = TRUE; + trx->check_unique_secondary = TRUE; + + trx->flush_log_later = FALSE; + trx->must_flush_log_later = FALSE; + + trx->dict_operation = TRX_DICT_OP_NONE; + trx->table_id = ut_dulint_zero; + + trx->mysql_thd = NULL; + trx->mysql_query_str = NULL; + trx->active_trans = 0; + trx->duplicates = 0; + + trx->n_mysql_tables_in_use = 0; + trx->mysql_n_tables_locked = 0; + + trx->mysql_log_file_name = NULL; + trx->mysql_log_offset = 0; + trx->mysql_master_log_file_name = ""; + trx->mysql_master_log_pos = 0; + trx->mysql_relay_log_file_name = ""; + trx->mysql_relay_log_pos = 0; + + mutex_create(&trx->undo_mutex, SYNC_TRX_UNDO); + + trx->rseg = NULL; + + trx->undo_no = ut_dulint_zero; + trx->last_sql_stat_start.least_undo_no = ut_dulint_zero; + trx->insert_undo = NULL; + trx->update_undo = NULL; + trx->undo_no_arr = NULL; + + trx->error_state = DB_SUCCESS; + trx->error_key_num = 0; + trx->detailed_error[0] = '\0'; + + trx->sess = sess; + trx->que_state = TRX_QUE_RUNNING; + trx->n_active_thrs = 0; + + trx->handling_signals = FALSE; + + UT_LIST_INIT(trx->signals); + UT_LIST_INIT(trx->reply_signals); + + trx->graph = NULL; + + trx->wait_lock = NULL; + trx->was_chosen_as_deadlock_victim = FALSE; + UT_LIST_INIT(trx->wait_thrs); + + trx->lock_heap = mem_heap_create_in_buffer(256); + UT_LIST_INIT(trx->trx_locks); + + UT_LIST_INIT(trx->trx_savepoints); + + trx->dict_operation_lock_mode = 0; + trx->has_search_latch = FALSE; + trx->search_latch_timeout = BTR_SEA_TIMEOUT; + + trx->declared_to_be_inside_innodb = FALSE; + trx->n_tickets_to_enter_innodb = 0; + + trx->global_read_view_heap = mem_heap_create(256); + trx->global_read_view = NULL; + trx->read_view = NULL; + + /* Set X/Open XA transaction identification to NULL */ + memset(&trx->xid, 0, sizeof(trx->xid)); + trx->xid.formatID = -1; + + trx->n_autoinc_rows = 0; + + /* Remember to free the vector explicitly. */ + trx->autoinc_locks = ib_vector_create( + mem_heap_create(sizeof(ib_vector_t) + sizeof(void*) * 4), 4); + + trx_reset_new_rec_lock_info(trx); + + return(trx); +} + +/************************************************************************ +Creates a transaction object for MySQL. */ +UNIV_INTERN +trx_t* +trx_allocate_for_mysql(void) +/*========================*/ + /* out, own: transaction object */ +{ + trx_t* trx; + + mutex_enter(&kernel_mutex); + + trx = trx_create(trx_dummy_sess); + + trx_n_mysql_transactions++; + + UT_LIST_ADD_FIRST(mysql_trx_list, trx_sys->mysql_trx_list, trx); + + mutex_exit(&kernel_mutex); + + trx->mysql_thread_id = os_thread_get_curr_id(); + + trx->mysql_process_no = os_proc_get_number(); + + return(trx); +} + +/************************************************************************ +Creates a transaction object for background operations by the master thread. */ +UNIV_INTERN +trx_t* +trx_allocate_for_background(void) +/*=============================*/ + /* out, own: transaction object */ +{ + trx_t* trx; + + mutex_enter(&kernel_mutex); + + trx = trx_create(trx_dummy_sess); + + mutex_exit(&kernel_mutex); + + return(trx); +} + +/************************************************************************ +Releases the search latch if trx has reserved it. */ +UNIV_INTERN +void +trx_search_latch_release_if_reserved( +/*=================================*/ + trx_t* trx) /* in: transaction */ +{ + if (trx->has_search_latch) { + rw_lock_s_unlock(&btr_search_latch); + + trx->has_search_latch = FALSE; + } +} + +/************************************************************************ +Frees a transaction object. */ +UNIV_INTERN +void +trx_free( +/*=====*/ + trx_t* trx) /* in, own: trx object */ +{ + ut_ad(mutex_own(&kernel_mutex)); + + if (trx->declared_to_be_inside_innodb) { + ut_print_timestamp(stderr); + fputs(" InnoDB: Error: Freeing a trx which is declared" + " to be processing\n" + "InnoDB: inside InnoDB.\n", stderr); + trx_print(stderr, trx, 600); + putc('\n', stderr); + + /* This is an error but not a fatal error. We must keep + the counters like srv_conc_n_threads accurate. */ + srv_conc_force_exit_innodb(trx); + } + + if (trx->n_mysql_tables_in_use != 0 + || trx->mysql_n_tables_locked != 0) { + + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: Error: MySQL is freeing a thd\n" + "InnoDB: though trx->n_mysql_tables_in_use is %lu\n" + "InnoDB: and trx->mysql_n_tables_locked is %lu.\n", + (ulong)trx->n_mysql_tables_in_use, + (ulong)trx->mysql_n_tables_locked); + + trx_print(stderr, trx, 600); + + ut_print_buf(stderr, trx, sizeof(trx_t)); + putc('\n', stderr); + } + + ut_a(trx->magic_n == TRX_MAGIC_N); + + trx->magic_n = 11112222; + + ut_a(trx->conc_state == TRX_NOT_STARTED); + + mutex_free(&(trx->undo_mutex)); + + ut_a(trx->insert_undo == NULL); + ut_a(trx->update_undo == NULL); + + if (trx->undo_no_arr) { + trx_undo_arr_free(trx->undo_no_arr); + } + + ut_a(UT_LIST_GET_LEN(trx->signals) == 0); + ut_a(UT_LIST_GET_LEN(trx->reply_signals) == 0); + + ut_a(trx->wait_lock == NULL); + ut_a(UT_LIST_GET_LEN(trx->wait_thrs) == 0); + + ut_a(!trx->has_search_latch); + + ut_a(trx->dict_operation_lock_mode == 0); + + if (trx->lock_heap) { + mem_heap_free(trx->lock_heap); + } + + ut_a(UT_LIST_GET_LEN(trx->trx_locks) == 0); + + if (trx->global_read_view_heap) { + mem_heap_free(trx->global_read_view_heap); + } + + trx->global_read_view = NULL; + + ut_a(trx->read_view == NULL); + + ut_a(ib_vector_is_empty(trx->autoinc_locks)); + /* We allocated a dedicated heap for the vector. */ + ib_vector_free(trx->autoinc_locks); + + mem_free(trx); +} + +/************************************************************************ +Frees a transaction object for MySQL. */ +UNIV_INTERN +void +trx_free_for_mysql( +/*===============*/ + trx_t* trx) /* in, own: trx object */ +{ + mutex_enter(&kernel_mutex); + + UT_LIST_REMOVE(mysql_trx_list, trx_sys->mysql_trx_list, trx); + + trx_free(trx); + + ut_a(trx_n_mysql_transactions > 0); + + trx_n_mysql_transactions--; + + mutex_exit(&kernel_mutex); +} + +/************************************************************************ +Frees a transaction object of a background operation of the master thread. */ +UNIV_INTERN +void +trx_free_for_background( +/*====================*/ + trx_t* trx) /* in, own: trx object */ +{ + mutex_enter(&kernel_mutex); + + trx_free(trx); + + mutex_exit(&kernel_mutex); +} + +/******************************************************************** +Inserts the trx handle in the trx system trx list in the right position. +The list is sorted on the trx id so that the biggest id is at the list +start. This function is used at the database startup to insert incomplete +transactions to the list. */ +static +void +trx_list_insert_ordered( +/*====================*/ + trx_t* trx) /* in: trx handle */ +{ + trx_t* trx2; + + ut_ad(mutex_own(&kernel_mutex)); + + trx2 = UT_LIST_GET_FIRST(trx_sys->trx_list); + + while (trx2 != NULL) { + if (ut_dulint_cmp(trx->id, trx2->id) >= 0) { + + ut_ad(ut_dulint_cmp(trx->id, trx2->id) == 1); + break; + } + trx2 = UT_LIST_GET_NEXT(trx_list, trx2); + } + + if (trx2 != NULL) { + trx2 = UT_LIST_GET_PREV(trx_list, trx2); + + if (trx2 == NULL) { + UT_LIST_ADD_FIRST(trx_list, trx_sys->trx_list, trx); + } else { + UT_LIST_INSERT_AFTER(trx_list, trx_sys->trx_list, + trx2, trx); + } + } else { + UT_LIST_ADD_LAST(trx_list, trx_sys->trx_list, trx); + } +} + +/******************************************************************** +Creates trx objects for transactions and initializes the trx list of +trx_sys at database start. Rollback segment and undo log lists must +already exist when this function is called, because the lists of +transactions to be rolled back or cleaned up are built based on the +undo log lists. */ +UNIV_INTERN +void +trx_lists_init_at_db_start(void) +/*============================*/ +{ + trx_rseg_t* rseg; + trx_undo_t* undo; + trx_t* trx; + + UT_LIST_INIT(trx_sys->trx_list); + + /* Look from the rollback segments if there exist undo logs for + transactions */ + + rseg = UT_LIST_GET_FIRST(trx_sys->rseg_list); + + while (rseg != NULL) { + undo = UT_LIST_GET_FIRST(rseg->insert_undo_list); + + while (undo != NULL) { + + trx = trx_create(trx_dummy_sess); + + trx->is_recovered = TRUE; + trx->id = undo->trx_id; + trx->xid = undo->xid; + trx->insert_undo = undo; + trx->rseg = rseg; + + if (undo->state != TRX_UNDO_ACTIVE) { + + /* Prepared transactions are left in + the prepared state waiting for a + commit or abort decision from MySQL */ + + if (undo->state == TRX_UNDO_PREPARED) { + + fprintf(stderr, + "InnoDB: Transaction " + TRX_ID_FMT + " was in the" + " XA prepared state.\n", + TRX_ID_PREP_PRINTF(trx->id)); + + if (srv_force_recovery == 0) { + + trx->conc_state = TRX_PREPARED; + } else { + fprintf(stderr, + "InnoDB: Since" + " innodb_force_recovery" + " > 0, we will" + " rollback it" + " anyway.\n"); + + trx->conc_state = TRX_ACTIVE; + } + } else { + trx->conc_state + = TRX_COMMITTED_IN_MEMORY; + } + + /* We give a dummy value for the trx no; + this should have no relevance since purge + is not interested in committed transaction + numbers, unless they are in the history + list, in which case it looks the number + from the disk based undo log structure */ + + trx->no = trx->id; + } else { + trx->conc_state = TRX_ACTIVE; + + /* A running transaction always has the number + field inited to ut_dulint_max */ + + trx->no = ut_dulint_max; + } + + if (undo->dict_operation) { + trx_set_dict_operation( + trx, TRX_DICT_OP_TABLE); + trx->table_id = undo->table_id; + } + + if (!undo->empty) { + trx->undo_no = ut_dulint_add(undo->top_undo_no, + 1); + } + + trx_list_insert_ordered(trx); + + undo = UT_LIST_GET_NEXT(undo_list, undo); + } + + undo = UT_LIST_GET_FIRST(rseg->update_undo_list); + + while (undo != NULL) { + trx = trx_get_on_id(undo->trx_id); + + if (NULL == trx) { + trx = trx_create(trx_dummy_sess); + + trx->is_recovered = TRUE; + trx->id = undo->trx_id; + trx->xid = undo->xid; + + if (undo->state != TRX_UNDO_ACTIVE) { + + /* Prepared transactions are left in + the prepared state waiting for a + commit or abort decision from MySQL */ + + if (undo->state == TRX_UNDO_PREPARED) { + fprintf(stderr, + "InnoDB: Transaction " + TRX_ID_FMT " was in the" + " XA prepared state.\n", + TRX_ID_PREP_PRINTF( + trx->id)); + + if (srv_force_recovery == 0) { + + trx->conc_state + = TRX_PREPARED; + } else { + fprintf(stderr, + "InnoDB: Since" + " innodb_force_recovery" + " > 0, we will" + " rollback it" + " anyway.\n"); + + trx->conc_state + = TRX_ACTIVE; + } + } else { + trx->conc_state + = TRX_COMMITTED_IN_MEMORY; + } + + /* We give a dummy value for the trx + number */ + + trx->no = trx->id; + } else { + trx->conc_state = TRX_ACTIVE; + + /* A running transaction always has + the number field inited to + ut_dulint_max */ + + trx->no = ut_dulint_max; + } + + trx->rseg = rseg; + trx_list_insert_ordered(trx); + + if (undo->dict_operation) { + trx_set_dict_operation( + trx, TRX_DICT_OP_TABLE); + trx->table_id = undo->table_id; + } + } + + trx->update_undo = undo; + + if ((!undo->empty) + && (ut_dulint_cmp(undo->top_undo_no, + trx->undo_no) >= 0)) { + + trx->undo_no = ut_dulint_add(undo->top_undo_no, + 1); + } + + undo = UT_LIST_GET_NEXT(undo_list, undo); + } + + rseg = UT_LIST_GET_NEXT(rseg_list, rseg); + } +} + +/********************************************************************** +Assigns a rollback segment to a transaction in a round-robin fashion. +Skips the SYSTEM rollback segment if another is available. */ +UNIV_INLINE +ulint +trx_assign_rseg(void) +/*=================*/ + /* out: assigned rollback segment id */ +{ + trx_rseg_t* rseg = trx_sys->latest_rseg; + + ut_ad(mutex_own(&kernel_mutex)); +loop: + /* Get next rseg in a round-robin fashion */ + + rseg = UT_LIST_GET_NEXT(rseg_list, rseg); + + if (rseg == NULL) { + rseg = UT_LIST_GET_FIRST(trx_sys->rseg_list); + } + + /* If it is the SYSTEM rollback segment, and there exist others, skip + it */ + + if ((rseg->id == TRX_SYS_SYSTEM_RSEG_ID) + && (UT_LIST_GET_LEN(trx_sys->rseg_list) > 1)) { + goto loop; + } + + trx_sys->latest_rseg = rseg; + + return(rseg->id); +} + +/******************************************************************** +Starts a new transaction. */ +UNIV_INTERN +ibool +trx_start_low( +/*==========*/ + /* out: TRUE */ + trx_t* trx, /* in: transaction */ + ulint rseg_id)/* in: rollback segment id; if ULINT_UNDEFINED + is passed, the system chooses the rollback segment + automatically in a round-robin fashion */ +{ + trx_rseg_t* rseg; + + ut_ad(mutex_own(&kernel_mutex)); + ut_ad(trx->rseg == NULL); + + if (trx->is_purge) { + trx->id = ut_dulint_zero; + trx->conc_state = TRX_ACTIVE; + trx->start_time = time(NULL); + + return(TRUE); + } + + ut_ad(trx->conc_state != TRX_ACTIVE); + + if (rseg_id == ULINT_UNDEFINED) { + + rseg_id = trx_assign_rseg(); + } + + rseg = trx_sys_get_nth_rseg(trx_sys, rseg_id); + + trx->id = trx_sys_get_new_trx_id(); + + /* The initial value for trx->no: ut_dulint_max is used in + read_view_open_now: */ + + trx->no = ut_dulint_max; + + trx->rseg = rseg; + + trx->conc_state = TRX_ACTIVE; + trx->start_time = time(NULL); + + UT_LIST_ADD_FIRST(trx_list, trx_sys->trx_list, trx); + + return(TRUE); +} + +/******************************************************************** +Starts a new transaction. */ +UNIV_INTERN +ibool +trx_start( +/*======*/ + /* out: TRUE */ + trx_t* trx, /* in: transaction */ + ulint rseg_id)/* in: rollback segment id; if ULINT_UNDEFINED + is passed, the system chooses the rollback segment + automatically in a round-robin fashion */ +{ + ibool ret; + + /* Update the info whether we should skip XA steps that eat CPU time + For the duration of the transaction trx->support_xa is not reread + from thd so any changes in the value take effect in the next + transaction. This is to avoid a scenario where some undo + generated by a transaction, has XA stuff, and other undo, + generated by the same transaction, doesn't. */ + trx->support_xa = thd_supports_xa(trx->mysql_thd); + + mutex_enter(&kernel_mutex); + + ret = trx_start_low(trx, rseg_id); + + mutex_exit(&kernel_mutex); + + return(ret); +} + +/******************************************************************** +Commits a transaction. */ +UNIV_INTERN +void +trx_commit_off_kernel( +/*==================*/ + trx_t* trx) /* in: transaction */ +{ + page_t* update_hdr_page; + ib_uint64_t lsn = 0; + trx_rseg_t* rseg; + trx_undo_t* undo; + mtr_t mtr; + + ut_ad(mutex_own(&kernel_mutex)); + + trx->must_flush_log_later = FALSE; + + rseg = trx->rseg; + + if (trx->insert_undo != NULL || trx->update_undo != NULL) { + + mutex_exit(&kernel_mutex); + + mtr_start(&mtr); + + /* Change the undo log segment states from TRX_UNDO_ACTIVE + to some other state: these modifications to the file data + structure define the transaction as committed in the file + based world, at the serialization point of the log sequence + number lsn obtained below. */ + + mutex_enter(&(rseg->mutex)); + + if (trx->insert_undo != NULL) { + trx_undo_set_state_at_finish( + rseg, trx, trx->insert_undo, &mtr); + } + + undo = trx->update_undo; + + if (undo) { + mutex_enter(&kernel_mutex); + trx->no = trx_sys_get_new_trx_no(); + + mutex_exit(&kernel_mutex); + + /* It is not necessary to obtain trx->undo_mutex here + because only a single OS thread is allowed to do the + transaction commit for this transaction. */ + + update_hdr_page = trx_undo_set_state_at_finish( + rseg, trx, undo, &mtr); + + /* We have to do the cleanup for the update log while + holding the rseg mutex because update log headers + have to be put to the history list in the order of + the trx number. */ + + trx_undo_update_cleanup(trx, update_hdr_page, &mtr); + } + + mutex_exit(&(rseg->mutex)); + + /* Update the latest MySQL binlog name and offset info + in trx sys header if MySQL binlogging is on or the database + server is a MySQL replication slave */ + + if (trx->mysql_log_file_name + && trx->mysql_log_file_name[0] != '\0') { + trx_sys_update_mysql_binlog_offset( + trx->mysql_log_file_name, + trx->mysql_log_offset, + TRX_SYS_MYSQL_LOG_INFO, &mtr); + trx->mysql_log_file_name = NULL; + } + + if (trx->mysql_master_log_file_name[0] != '\0') { + /* This database server is a MySQL replication slave */ + trx_sys_update_mysql_binlog_offset( + trx->mysql_relay_log_file_name, + trx->mysql_relay_log_pos, + TRX_SYS_MYSQL_RELAY_LOG_INFO, &mtr); + trx_sys_update_mysql_binlog_offset( + trx->mysql_master_log_file_name, + trx->mysql_master_log_pos, + TRX_SYS_MYSQL_MASTER_LOG_INFO, &mtr); + trx->mysql_master_log_file_name = ""; + } + + /* The following call commits the mini-transaction, making the + whole transaction committed in the file-based world, at this + log sequence number. The transaction becomes 'durable' when + we write the log to disk, but in the logical sense the commit + in the file-based data structures (undo logs etc.) happens + here. + + NOTE that transaction numbers, which are assigned only to + transactions with an update undo log, do not necessarily come + in exactly the same order as commit lsn's, if the transactions + have different rollback segments. To get exactly the same + order we should hold the kernel mutex up to this point, + adding to to the contention of the kernel mutex. However, if + a transaction T2 is able to see modifications made by + a transaction T1, T2 will always get a bigger transaction + number and a bigger commit lsn than T1. */ + + /*--------------*/ + mtr_commit(&mtr); + /*--------------*/ + lsn = mtr.end_lsn; + + mutex_enter(&kernel_mutex); + } + + ut_ad(trx->conc_state == TRX_ACTIVE + || trx->conc_state == TRX_PREPARED); + ut_ad(mutex_own(&kernel_mutex)); + + /* The following assignment makes the transaction committed in memory + and makes its changes to data visible to other transactions. + NOTE that there is a small discrepancy from the strict formal + visibility rules here: a human user of the database can see + modifications made by another transaction T even before the necessary + log segment has been flushed to the disk. If the database happens to + crash before the flush, the user has seen modifications from T which + will never be a committed transaction. However, any transaction T2 + which sees the modifications of the committing transaction T, and + which also itself makes modifications to the database, will get an lsn + larger than the committing transaction T. In the case where the log + flush fails, and T never gets committed, also T2 will never get + committed. */ + + /*--------------------------------------*/ + trx->conc_state = TRX_COMMITTED_IN_MEMORY; + /*--------------------------------------*/ + + /* If we release kernel_mutex below and we are still doing + recovery i.e.: back ground rollback thread is still active + then there is a chance that the rollback thread may see + this trx as COMMITTED_IN_MEMORY and goes adhead to clean it + up calling trx_cleanup_at_db_startup(). This can happen + in the case we are committing a trx here that is left in + PREPARED state during the crash. Note that commit of the + rollback of a PREPARED trx happens in the recovery thread + while the rollback of other transactions happen in the + background thread. To avoid this race we unconditionally + unset the is_recovered flag from the trx. */ + + trx->is_recovered = FALSE; + + lock_release_off_kernel(trx); + + if (trx->global_read_view) { + read_view_close(trx->global_read_view); + mem_heap_empty(trx->global_read_view_heap); + trx->global_read_view = NULL; + } + + trx->read_view = NULL; + + if (lsn) { + + mutex_exit(&kernel_mutex); + + if (trx->insert_undo != NULL) { + + trx_undo_insert_cleanup(trx); + } + + /* NOTE that we could possibly make a group commit more + efficient here: call os_thread_yield here to allow also other + trxs to come to commit! */ + + /*-------------------------------------*/ + + /* Depending on the my.cnf options, we may now write the log + buffer to the log files, making the transaction durable if + the OS does not crash. We may also flush the log files to + disk, making the transaction durable also at an OS crash or a + power outage. + + The idea in InnoDB's group commit is that a group of + transactions gather behind a trx doing a physical disk write + to log files, and when that physical write has been completed, + one of those transactions does a write which commits the whole + group. Note that this group commit will only bring benefit if + there are > 2 users in the database. Then at least 2 users can + gather behind one doing the physical log write to disk. + + If we are calling trx_commit() under MySQL's binlog mutex, we + will delay possible log write and flush to a separate function + trx_commit_complete_for_mysql(), which is only called when the + thread has released the binlog mutex. This is to make the + group commit algorithm to work. Otherwise, the MySQL binlog + mutex would serialize all commits and prevent a group of + transactions from gathering. */ + + if (trx->flush_log_later) { + /* Do nothing yet */ + trx->must_flush_log_later = TRUE; + } else if (srv_flush_log_at_trx_commit == 0) { + /* Do nothing */ + } else if (srv_flush_log_at_trx_commit == 1) { + if (srv_unix_file_flush_method == SRV_UNIX_NOSYNC) { + /* Write the log but do not flush it to disk */ + + log_write_up_to(lsn, LOG_WAIT_ONE_GROUP, + FALSE); + } else { + /* Write the log to the log files AND flush + them to disk */ + + log_write_up_to(lsn, LOG_WAIT_ONE_GROUP, TRUE); + } + } else if (srv_flush_log_at_trx_commit == 2) { + + /* Write the log but do not flush it to disk */ + + log_write_up_to(lsn, LOG_WAIT_ONE_GROUP, FALSE); + } else { + ut_error; + } + + trx->commit_lsn = lsn; + + /*-------------------------------------*/ + + mutex_enter(&kernel_mutex); + } + + /* Free all savepoints */ + trx_roll_free_all_savepoints(trx); + + trx->conc_state = TRX_NOT_STARTED; + trx->rseg = NULL; + trx->undo_no = ut_dulint_zero; + trx->last_sql_stat_start.least_undo_no = ut_dulint_zero; + trx->mysql_query_str = NULL; + + ut_ad(UT_LIST_GET_LEN(trx->wait_thrs) == 0); + ut_ad(UT_LIST_GET_LEN(trx->trx_locks) == 0); + + UT_LIST_REMOVE(trx_list, trx_sys->trx_list, trx); +} + +/******************************************************************** +Cleans up a transaction at database startup. The cleanup is needed if +the transaction already got to the middle of a commit when the database +crashed, andf we cannot roll it back. */ +UNIV_INTERN +void +trx_cleanup_at_db_startup( +/*======================*/ + trx_t* trx) /* in: transaction */ +{ + if (trx->insert_undo != NULL) { + + trx_undo_insert_cleanup(trx); + } + + trx->conc_state = TRX_NOT_STARTED; + trx->rseg = NULL; + trx->undo_no = ut_dulint_zero; + trx->last_sql_stat_start.least_undo_no = ut_dulint_zero; + + UT_LIST_REMOVE(trx_list, trx_sys->trx_list, trx); +} + +/************************************************************************ +Assigns a read view for a consistent read query. All the consistent reads +within the same transaction will get the same read view, which is created +when this function is first called for a new started transaction. */ +UNIV_INTERN +read_view_t* +trx_assign_read_view( +/*=================*/ + /* out: consistent read view */ + trx_t* trx) /* in: active transaction */ +{ + ut_ad(trx->conc_state == TRX_ACTIVE); + + if (trx->read_view) { + return(trx->read_view); + } + + mutex_enter(&kernel_mutex); + + if (!trx->read_view) { + trx->read_view = read_view_open_now( + trx->id, trx->global_read_view_heap); + trx->global_read_view = trx->read_view; + } + + mutex_exit(&kernel_mutex); + + return(trx->read_view); +} + +/******************************************************************** +Commits a transaction. NOTE that the kernel mutex is temporarily released. */ +static +void +trx_handle_commit_sig_off_kernel( +/*=============================*/ + trx_t* trx, /* in: transaction */ + que_thr_t** next_thr) /* in/out: next query thread to run; + if the value which is passed in is + a pointer to a NULL pointer, then the + calling function can start running + a new query thread */ +{ + trx_sig_t* sig; + trx_sig_t* next_sig; + + ut_ad(mutex_own(&kernel_mutex)); + + trx->que_state = TRX_QUE_COMMITTING; + + trx_commit_off_kernel(trx); + + ut_ad(UT_LIST_GET_LEN(trx->wait_thrs) == 0); + + /* Remove all TRX_SIG_COMMIT signals from the signal queue and send + reply messages to them */ + + sig = UT_LIST_GET_FIRST(trx->signals); + + while (sig != NULL) { + next_sig = UT_LIST_GET_NEXT(signals, sig); + + if (sig->type == TRX_SIG_COMMIT) { + + trx_sig_reply(sig, next_thr); + trx_sig_remove(trx, sig); + } + + sig = next_sig; + } + + trx->que_state = TRX_QUE_RUNNING; +} + +/*************************************************************** +The transaction must be in the TRX_QUE_LOCK_WAIT state. Puts it to +the TRX_QUE_RUNNING state and releases query threads which were +waiting for a lock in the wait_thrs list. */ +UNIV_INTERN +void +trx_end_lock_wait( +/*==============*/ + trx_t* trx) /* in: transaction */ +{ + que_thr_t* thr; + + ut_ad(mutex_own(&kernel_mutex)); + ut_ad(trx->que_state == TRX_QUE_LOCK_WAIT); + + thr = UT_LIST_GET_FIRST(trx->wait_thrs); + + while (thr != NULL) { + que_thr_end_wait_no_next_thr(thr); + + UT_LIST_REMOVE(trx_thrs, trx->wait_thrs, thr); + + thr = UT_LIST_GET_FIRST(trx->wait_thrs); + } + + trx->que_state = TRX_QUE_RUNNING; +} + +/*************************************************************** +Moves the query threads in the lock wait list to the SUSPENDED state and puts +the transaction to the TRX_QUE_RUNNING state. */ +static +void +trx_lock_wait_to_suspended( +/*=======================*/ + trx_t* trx) /* in: transaction in the TRX_QUE_LOCK_WAIT state */ +{ + que_thr_t* thr; + + ut_ad(mutex_own(&kernel_mutex)); + ut_ad(trx->que_state == TRX_QUE_LOCK_WAIT); + + thr = UT_LIST_GET_FIRST(trx->wait_thrs); + + while (thr != NULL) { + thr->state = QUE_THR_SUSPENDED; + + UT_LIST_REMOVE(trx_thrs, trx->wait_thrs, thr); + + thr = UT_LIST_GET_FIRST(trx->wait_thrs); + } + + trx->que_state = TRX_QUE_RUNNING; +} + +/*************************************************************** +Moves the query threads in the sig reply wait list of trx to the SUSPENDED +state. */ +static +void +trx_sig_reply_wait_to_suspended( +/*============================*/ + trx_t* trx) /* in: transaction */ +{ + trx_sig_t* sig; + que_thr_t* thr; + + ut_ad(mutex_own(&kernel_mutex)); + + sig = UT_LIST_GET_FIRST(trx->reply_signals); + + while (sig != NULL) { + thr = sig->receiver; + + ut_ad(thr->state == QUE_THR_SIG_REPLY_WAIT); + + thr->state = QUE_THR_SUSPENDED; + + sig->receiver = NULL; + + UT_LIST_REMOVE(reply_signals, trx->reply_signals, sig); + + sig = UT_LIST_GET_FIRST(trx->reply_signals); + } +} + +/********************************************************************* +Checks the compatibility of a new signal with the other signals in the +queue. */ +static +ibool +trx_sig_is_compatible( +/*==================*/ + /* out: TRUE if the signal can be queued */ + trx_t* trx, /* in: trx handle */ + ulint type, /* in: signal type */ + ulint sender) /* in: TRX_SIG_SELF or TRX_SIG_OTHER_SESS */ +{ + trx_sig_t* sig; + + ut_ad(mutex_own(&kernel_mutex)); + + if (UT_LIST_GET_LEN(trx->signals) == 0) { + + return(TRUE); + } + + if (sender == TRX_SIG_SELF) { + if (type == TRX_SIG_ERROR_OCCURRED) { + + return(TRUE); + + } else if (type == TRX_SIG_BREAK_EXECUTION) { + + return(TRUE); + } else { + return(FALSE); + } + } + + ut_ad(sender == TRX_SIG_OTHER_SESS); + + sig = UT_LIST_GET_FIRST(trx->signals); + + if (type == TRX_SIG_COMMIT) { + while (sig != NULL) { + + if (sig->type == TRX_SIG_TOTAL_ROLLBACK) { + + return(FALSE); + } + + sig = UT_LIST_GET_NEXT(signals, sig); + } + + return(TRUE); + + } else if (type == TRX_SIG_TOTAL_ROLLBACK) { + while (sig != NULL) { + + if (sig->type == TRX_SIG_COMMIT) { + + return(FALSE); + } + + sig = UT_LIST_GET_NEXT(signals, sig); + } + + return(TRUE); + + } else if (type == TRX_SIG_BREAK_EXECUTION) { + + return(TRUE); + } else { + ut_error; + + return(FALSE); + } +} + +/******************************************************************** +Sends a signal to a trx object. */ +UNIV_INTERN +void +trx_sig_send( +/*=========*/ + trx_t* trx, /* in: trx handle */ + ulint type, /* in: signal type */ + ulint sender, /* in: TRX_SIG_SELF or + TRX_SIG_OTHER_SESS */ + que_thr_t* receiver_thr, /* in: query thread which wants the + reply, or NULL; if type is + TRX_SIG_END_WAIT, this must be NULL */ + trx_savept_t* savept, /* in: possible rollback savepoint, or + NULL */ + que_thr_t** next_thr) /* in/out: next query thread to run; + if the value which is passed in is + a pointer to a NULL pointer, then the + calling function can start running + a new query thread; if the parameter + is NULL, it is ignored */ +{ + trx_sig_t* sig; + trx_t* receiver_trx; + + ut_ad(trx); + ut_ad(mutex_own(&kernel_mutex)); + + if (!trx_sig_is_compatible(trx, type, sender)) { + /* The signal is not compatible with the other signals in + the queue: die */ + + ut_error; + } + + /* Queue the signal object */ + + if (UT_LIST_GET_LEN(trx->signals) == 0) { + + /* The signal list is empty: the 'sig' slot must be unused + (we improve performance a bit by avoiding mem_alloc) */ + sig = &(trx->sig); + } else { + /* It might be that the 'sig' slot is unused also in this + case, but we choose the easy way of using mem_alloc */ + + sig = mem_alloc(sizeof(trx_sig_t)); + } + + UT_LIST_ADD_LAST(signals, trx->signals, sig); + + sig->type = type; + sig->sender = sender; + sig->receiver = receiver_thr; + + if (savept) { + sig->savept = *savept; + } + + if (receiver_thr) { + receiver_trx = thr_get_trx(receiver_thr); + + UT_LIST_ADD_LAST(reply_signals, receiver_trx->reply_signals, + sig); + } + + if (trx->sess->state == SESS_ERROR) { + + trx_sig_reply_wait_to_suspended(trx); + } + + if ((sender != TRX_SIG_SELF) || (type == TRX_SIG_BREAK_EXECUTION)) { + ut_error; + } + + /* If there were no other signals ahead in the queue, try to start + handling of the signal */ + + if (UT_LIST_GET_FIRST(trx->signals) == sig) { + + trx_sig_start_handle(trx, next_thr); + } +} + +/******************************************************************** +Ends signal handling. If the session is in the error state, and +trx->graph_before_signal_handling != NULL, then returns control to the error +handling routine of the graph (currently just returns the control to the +graph root which then will send an error message to the client). */ +UNIV_INTERN +void +trx_end_signal_handling( +/*====================*/ + trx_t* trx) /* in: trx */ +{ + ut_ad(mutex_own(&kernel_mutex)); + ut_ad(trx->handling_signals == TRUE); + + trx->handling_signals = FALSE; + + trx->graph = trx->graph_before_signal_handling; + + if (trx->graph && (trx->sess->state == SESS_ERROR)) { + + que_fork_error_handle(trx, trx->graph); + } +} + +/******************************************************************** +Starts handling of a trx signal. */ +UNIV_INTERN +void +trx_sig_start_handle( +/*=================*/ + trx_t* trx, /* in: trx handle */ + que_thr_t** next_thr) /* in/out: next query thread to run; + if the value which is passed in is + a pointer to a NULL pointer, then the + calling function can start running + a new query thread; if the parameter + is NULL, it is ignored */ +{ + trx_sig_t* sig; + ulint type; +loop: + /* We loop in this function body as long as there are queued signals + we can process immediately */ + + ut_ad(trx); + ut_ad(mutex_own(&kernel_mutex)); + + if (trx->handling_signals && (UT_LIST_GET_LEN(trx->signals) == 0)) { + + trx_end_signal_handling(trx); + + return; + } + + if (trx->conc_state == TRX_NOT_STARTED) { + + trx_start_low(trx, ULINT_UNDEFINED); + } + + /* If the trx is in a lock wait state, moves the waiting query threads + to the suspended state */ + + if (trx->que_state == TRX_QUE_LOCK_WAIT) { + + trx_lock_wait_to_suspended(trx); + } + + /* If the session is in the error state and this trx has threads + waiting for reply from signals, moves these threads to the suspended + state, canceling wait reservations; note that if the transaction has + sent a commit or rollback signal to itself, and its session is not in + the error state, then nothing is done here. */ + + if (trx->sess->state == SESS_ERROR) { + trx_sig_reply_wait_to_suspended(trx); + } + + /* If there are no running query threads, we can start processing of a + signal, otherwise we have to wait until all query threads of this + transaction are aware of the arrival of the signal. */ + + if (trx->n_active_thrs > 0) { + + return; + } + + if (trx->handling_signals == FALSE) { + trx->graph_before_signal_handling = trx->graph; + + trx->handling_signals = TRUE; + } + + sig = UT_LIST_GET_FIRST(trx->signals); + type = sig->type; + + if (type == TRX_SIG_COMMIT) { + + trx_handle_commit_sig_off_kernel(trx, next_thr); + + } else if ((type == TRX_SIG_TOTAL_ROLLBACK) + || (type == TRX_SIG_ROLLBACK_TO_SAVEPT)) { + + trx_rollback(trx, sig, next_thr); + + /* No further signals can be handled until the rollback + completes, therefore we return */ + + return; + + } else if (type == TRX_SIG_ERROR_OCCURRED) { + + trx_rollback(trx, sig, next_thr); + + /* No further signals can be handled until the rollback + completes, therefore we return */ + + return; + + } else if (type == TRX_SIG_BREAK_EXECUTION) { + + trx_sig_reply(sig, next_thr); + trx_sig_remove(trx, sig); + } else { + ut_error; + } + + goto loop; +} + +/******************************************************************** +Send the reply message when a signal in the queue of the trx has been +handled. */ +UNIV_INTERN +void +trx_sig_reply( +/*==========*/ + trx_sig_t* sig, /* in: signal */ + que_thr_t** next_thr) /* in/out: next query thread to run; + if the value which is passed in is + a pointer to a NULL pointer, then the + calling function can start running + a new query thread */ +{ + trx_t* receiver_trx; + + ut_ad(sig); + ut_ad(mutex_own(&kernel_mutex)); + + if (sig->receiver != NULL) { + ut_ad((sig->receiver)->state == QUE_THR_SIG_REPLY_WAIT); + + receiver_trx = thr_get_trx(sig->receiver); + + UT_LIST_REMOVE(reply_signals, receiver_trx->reply_signals, + sig); + ut_ad(receiver_trx->sess->state != SESS_ERROR); + + que_thr_end_wait(sig->receiver, next_thr); + + sig->receiver = NULL; + + } +} + +/******************************************************************** +Removes a signal object from the trx signal queue. */ +UNIV_INTERN +void +trx_sig_remove( +/*===========*/ + trx_t* trx, /* in: trx handle */ + trx_sig_t* sig) /* in, own: signal */ +{ + ut_ad(trx && sig); + ut_ad(mutex_own(&kernel_mutex)); + + ut_ad(sig->receiver == NULL); + + UT_LIST_REMOVE(signals, trx->signals, sig); + sig->type = 0; /* reset the field to catch possible bugs */ + + if (sig != &(trx->sig)) { + mem_free(sig); + } +} + +/************************************************************************* +Creates a commit command node struct. */ +UNIV_INTERN +commit_node_t* +commit_node_create( +/*===============*/ + /* out, own: commit node struct */ + mem_heap_t* heap) /* in: mem heap where created */ +{ + commit_node_t* node; + + node = mem_heap_alloc(heap, sizeof(commit_node_t)); + node->common.type = QUE_NODE_COMMIT; + node->state = COMMIT_NODE_SEND; + + return(node); +} + +/*************************************************************** +Performs an execution step for a commit type node in a query graph. */ +UNIV_INTERN +que_thr_t* +trx_commit_step( +/*============*/ + /* out: query thread to run next, or NULL */ + que_thr_t* thr) /* in: query thread */ +{ + commit_node_t* node; + que_thr_t* next_thr; + + node = thr->run_node; + + ut_ad(que_node_get_type(node) == QUE_NODE_COMMIT); + + if (thr->prev_node == que_node_get_parent(node)) { + node->state = COMMIT_NODE_SEND; + } + + if (node->state == COMMIT_NODE_SEND) { + mutex_enter(&kernel_mutex); + + node->state = COMMIT_NODE_WAIT; + + next_thr = NULL; + + thr->state = QUE_THR_SIG_REPLY_WAIT; + + /* Send the commit signal to the transaction */ + + trx_sig_send(thr_get_trx(thr), TRX_SIG_COMMIT, TRX_SIG_SELF, + thr, NULL, &next_thr); + + mutex_exit(&kernel_mutex); + + return(next_thr); + } + + ut_ad(node->state == COMMIT_NODE_WAIT); + + node->state = COMMIT_NODE_SEND; + + thr->run_node = que_node_get_parent(node); + + return(thr); +} + +/************************************************************************** +Does the transaction commit for MySQL. */ +UNIV_INTERN +ulint +trx_commit_for_mysql( +/*=================*/ + /* out: DB_SUCCESS or error number */ + trx_t* trx) /* in: trx handle */ +{ + /* Because we do not do the commit by sending an Innobase + sig to the transaction, we must here make sure that trx has been + started. */ + + ut_a(trx); + + trx_start_if_not_started(trx); + + trx->op_info = "committing"; + + mutex_enter(&kernel_mutex); + + trx_commit_off_kernel(trx); + + mutex_exit(&kernel_mutex); + + trx->op_info = ""; + + return(DB_SUCCESS); +} + +/************************************************************************** +If required, flushes the log to disk if we called trx_commit_for_mysql() +with trx->flush_log_later == TRUE. */ +UNIV_INTERN +ulint +trx_commit_complete_for_mysql( +/*==========================*/ + /* out: 0 or error number */ + trx_t* trx) /* in: trx handle */ +{ + ib_uint64_t lsn = trx->commit_lsn; + + ut_a(trx); + + trx->op_info = "flushing log"; + + if (!trx->must_flush_log_later) { + /* Do nothing */ + } else if (srv_flush_log_at_trx_commit == 0) { + /* Do nothing */ + } else if (srv_flush_log_at_trx_commit == 1) { + if (srv_unix_file_flush_method == SRV_UNIX_NOSYNC) { + /* Write the log but do not flush it to disk */ + + log_write_up_to(lsn, LOG_WAIT_ONE_GROUP, FALSE); + } else { + /* Write the log to the log files AND flush them to + disk */ + + log_write_up_to(lsn, LOG_WAIT_ONE_GROUP, TRUE); + } + } else if (srv_flush_log_at_trx_commit == 2) { + + /* Write the log but do not flush it to disk */ + + log_write_up_to(lsn, LOG_WAIT_ONE_GROUP, FALSE); + } else { + ut_error; + } + + trx->must_flush_log_later = FALSE; + + trx->op_info = ""; + + return(0); +} + +/************************************************************************** +Marks the latest SQL statement ended. */ +UNIV_INTERN +void +trx_mark_sql_stat_end( +/*==================*/ + trx_t* trx) /* in: trx handle */ +{ + ut_a(trx); + + if (trx->conc_state == TRX_NOT_STARTED) { + trx->undo_no = ut_dulint_zero; + } + + trx->last_sql_stat_start.least_undo_no = trx->undo_no; +} + +/************************************************************************** +Prints info about a transaction to the given file. The caller must own the +kernel mutex and must have called +innobase_mysql_prepare_print_arbitrary_thd(), unless he knows that MySQL +or InnoDB cannot meanwhile change the info printed here. */ +UNIV_INTERN +void +trx_print( +/*======*/ + FILE* f, /* in: output stream */ + trx_t* trx, /* in: transaction */ + ulint max_query_len) /* in: max query length to print, or 0 to + use the default max length */ +{ + ibool newline; + + fprintf(f, "TRANSACTION " TRX_ID_FMT, TRX_ID_PREP_PRINTF(trx->id)); + + switch (trx->conc_state) { + case TRX_NOT_STARTED: + fputs(", not started", f); + break; + case TRX_ACTIVE: + fprintf(f, ", ACTIVE %lu sec", + (ulong)difftime(time(NULL), trx->start_time)); + break; + case TRX_PREPARED: + fprintf(f, ", ACTIVE (PREPARED) %lu sec", + (ulong)difftime(time(NULL), trx->start_time)); + break; + case TRX_COMMITTED_IN_MEMORY: + fputs(", COMMITTED IN MEMORY", f); + break; + default: + fprintf(f, " state %lu", (ulong) trx->conc_state); + } + +#ifdef UNIV_LINUX + fprintf(f, ", process no %lu", trx->mysql_process_no); +#endif + fprintf(f, ", OS thread id %lu", + (ulong) os_thread_pf(trx->mysql_thread_id)); + + if (*trx->op_info) { + putc(' ', f); + fputs(trx->op_info, f); + } + + if (trx->is_recovered) { + fputs(" recovered trx", f); + } + + if (trx->is_purge) { + fputs(" purge trx", f); + } + + if (trx->declared_to_be_inside_innodb) { + fprintf(f, ", thread declared inside InnoDB %lu", + (ulong) trx->n_tickets_to_enter_innodb); + } + + putc('\n', f); + + if (trx->n_mysql_tables_in_use > 0 || trx->mysql_n_tables_locked > 0) { + fprintf(f, "mysql tables in use %lu, locked %lu\n", + (ulong) trx->n_mysql_tables_in_use, + (ulong) trx->mysql_n_tables_locked); + } + + newline = TRUE; + + switch (trx->que_state) { + case TRX_QUE_RUNNING: + newline = FALSE; break; + case TRX_QUE_LOCK_WAIT: + fputs("LOCK WAIT ", f); break; + case TRX_QUE_ROLLING_BACK: + fputs("ROLLING BACK ", f); break; + case TRX_QUE_COMMITTING: + fputs("COMMITTING ", f); break; + default: + fprintf(f, "que state %lu ", (ulong) trx->que_state); + } + + if (0 < UT_LIST_GET_LEN(trx->trx_locks) + || mem_heap_get_size(trx->lock_heap) > 400) { + newline = TRUE; + + fprintf(f, "%lu lock struct(s), heap size %lu," + " %lu row lock(s)", + (ulong) UT_LIST_GET_LEN(trx->trx_locks), + (ulong) mem_heap_get_size(trx->lock_heap), + (ulong) lock_number_of_rows_locked(trx)); + } + + if (trx->has_search_latch) { + newline = TRUE; + fputs(", holds adaptive hash latch", f); + } + + if (!ut_dulint_is_zero(trx->undo_no)) { + newline = TRUE; + fprintf(f, ", undo log entries %lu", + (ulong) ut_dulint_get_low(trx->undo_no)); + } + + if (newline) { + putc('\n', f); + } + + if (trx->mysql_thd != NULL) { + innobase_mysql_print_thd(f, trx->mysql_thd, max_query_len); + } +} + +/*********************************************************************** +Compares the "weight" (or size) of two transactions. Transactions that +have edited non-transactional tables are considered heavier than ones +that have not. */ +UNIV_INTERN +int +trx_weight_cmp( +/*===========*/ + /* out: <0, 0 or >0; similar to strcmp(3) */ + const trx_t* a, /* in: the first transaction to be compared */ + const trx_t* b) /* in: the second transaction to be compared */ +{ + ibool a_notrans_edit; + ibool b_notrans_edit; + + /* If mysql_thd is NULL for a transaction we assume that it has + not edited non-transactional tables. */ + + a_notrans_edit = a->mysql_thd != NULL + && thd_has_edited_nontrans_tables(a->mysql_thd); + + b_notrans_edit = b->mysql_thd != NULL + && thd_has_edited_nontrans_tables(b->mysql_thd); + + if (a_notrans_edit && !b_notrans_edit) { + + return(1); + } + + if (!a_notrans_edit && b_notrans_edit) { + + return(-1); + } + + /* Either both had edited non-transactional tables or both had + not, we fall back to comparing the number of altered/locked + rows. */ + +#if 0 + fprintf(stderr, + "%s TRX_WEIGHT(a): %lld+%lu, TRX_WEIGHT(b): %lld+%lu\n", + __func__, + ut_conv_dulint_to_longlong(a->undo_no), + UT_LIST_GET_LEN(a->trx_locks), + ut_conv_dulint_to_longlong(b->undo_no), + UT_LIST_GET_LEN(b->trx_locks)); +#endif + + return(ut_dulint_cmp(TRX_WEIGHT(a), TRX_WEIGHT(b))); +} + +/******************************************************************** +Prepares a transaction. */ +UNIV_INTERN +void +trx_prepare_off_kernel( +/*===================*/ + trx_t* trx) /* in: transaction */ +{ + page_t* update_hdr_page; + trx_rseg_t* rseg; + ib_uint64_t lsn = 0; + mtr_t mtr; + + ut_ad(mutex_own(&kernel_mutex)); + + rseg = trx->rseg; + + if (trx->insert_undo != NULL || trx->update_undo != NULL) { + + mutex_exit(&kernel_mutex); + + mtr_start(&mtr); + + /* Change the undo log segment states from TRX_UNDO_ACTIVE + to TRX_UNDO_PREPARED: these modifications to the file data + structure define the transaction as prepared in the + file-based world, at the serialization point of lsn. */ + + mutex_enter(&(rseg->mutex)); + + if (trx->insert_undo != NULL) { + + /* It is not necessary to obtain trx->undo_mutex here + because only a single OS thread is allowed to do the + transaction prepare for this transaction. */ + + trx_undo_set_state_at_prepare(trx, trx->insert_undo, + &mtr); + } + + if (trx->update_undo) { + update_hdr_page = trx_undo_set_state_at_prepare( + trx, trx->update_undo, &mtr); + } + + mutex_exit(&(rseg->mutex)); + + /*--------------*/ + mtr_commit(&mtr); /* This mtr commit makes the + transaction prepared in the file-based + world */ + /*--------------*/ + lsn = mtr.end_lsn; + + mutex_enter(&kernel_mutex); + } + + ut_ad(mutex_own(&kernel_mutex)); + + /*--------------------------------------*/ + trx->conc_state = TRX_PREPARED; + /*--------------------------------------*/ + + if (lsn) { + /* Depending on the my.cnf options, we may now write the log + buffer to the log files, making the prepared state of the + transaction durable if the OS does not crash. We may also + flush the log files to disk, making the prepared state of the + transaction durable also at an OS crash or a power outage. + + The idea in InnoDB's group prepare is that a group of + transactions gather behind a trx doing a physical disk write + to log files, and when that physical write has been completed, + one of those transactions does a write which prepares the whole + group. Note that this group prepare will only bring benefit if + there are > 2 users in the database. Then at least 2 users can + gather behind one doing the physical log write to disk. + + TODO: find out if MySQL holds some mutex when calling this. + That would spoil our group prepare algorithm. */ + + mutex_exit(&kernel_mutex); + + if (srv_flush_log_at_trx_commit == 0) { + /* Do nothing */ + } else if (srv_flush_log_at_trx_commit == 1) { + if (srv_unix_file_flush_method == SRV_UNIX_NOSYNC) { + /* Write the log but do not flush it to disk */ + + log_write_up_to(lsn, LOG_WAIT_ONE_GROUP, + FALSE); + } else { + /* Write the log to the log files AND flush + them to disk */ + + log_write_up_to(lsn, LOG_WAIT_ONE_GROUP, TRUE); + } + } else if (srv_flush_log_at_trx_commit == 2) { + + /* Write the log but do not flush it to disk */ + + log_write_up_to(lsn, LOG_WAIT_ONE_GROUP, FALSE); + } else { + ut_error; + } + + mutex_enter(&kernel_mutex); + } +} + +/************************************************************************** +Does the transaction prepare for MySQL. */ +UNIV_INTERN +ulint +trx_prepare_for_mysql( +/*==================*/ + /* out: 0 or error number */ + trx_t* trx) /* in: trx handle */ +{ + /* Because we do not do the prepare by sending an Innobase + sig to the transaction, we must here make sure that trx has been + started. */ + + ut_a(trx); + + trx->op_info = "preparing"; + + trx_start_if_not_started(trx); + + mutex_enter(&kernel_mutex); + + trx_prepare_off_kernel(trx); + + mutex_exit(&kernel_mutex); + + trx->op_info = ""; + + return(0); +} + +/************************************************************************** +This function is used to find number of prepared transactions and +their transaction objects for a recovery. */ +UNIV_INTERN +int +trx_recover_for_mysql( +/*==================*/ + /* out: number of prepared transactions + stored in xid_list */ + XID* xid_list, /* in/out: prepared transactions */ + ulint len) /* in: number of slots in xid_list */ +{ + trx_t* trx; + ulint count = 0; + + ut_ad(xid_list); + ut_ad(len); + + /* We should set those transactions which are in the prepared state + to the xid_list */ + + mutex_enter(&kernel_mutex); + + trx = UT_LIST_GET_FIRST(trx_sys->trx_list); + + while (trx) { + if (trx->conc_state == TRX_PREPARED) { + xid_list[count] = trx->xid; + + if (count == 0) { + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: Starting recovery for" + " XA transactions...\n"); + } + + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: Transaction " TRX_ID_FMT " in" + " prepared state after recovery\n", + TRX_ID_PREP_PRINTF(trx->id)); + + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: Transaction contains changes" + " to %lu rows\n", + (ulong) ut_conv_dulint_to_longlong( + trx->undo_no)); + + count++; + + if (count == len) { + break; + } + } + + trx = UT_LIST_GET_NEXT(trx_list, trx); + } + + mutex_exit(&kernel_mutex); + + if (count > 0){ + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: %lu transactions in prepared state" + " after recovery\n", + (ulong) count); + } + + return ((int) count); +} + +/*********************************************************************** +This function is used to find one X/Open XA distributed transaction +which is in the prepared state */ +UNIV_INTERN +trx_t* +trx_get_trx_by_xid( +/*===============*/ + /* out: trx or NULL */ + XID* xid) /* in: X/Open XA transaction identification */ +{ + trx_t* trx; + + if (xid == NULL) { + + return (NULL); + } + + mutex_enter(&kernel_mutex); + + trx = UT_LIST_GET_FIRST(trx_sys->trx_list); + + while (trx) { + /* Compare two X/Open XA transaction id's: their + length should be the same and binary comparison + of gtrid_lenght+bqual_length bytes should be + the same */ + + if (xid->gtrid_length == trx->xid.gtrid_length + && xid->bqual_length == trx->xid.bqual_length + && memcmp(xid->data, trx->xid.data, + xid->gtrid_length + xid->bqual_length) == 0) { + break; + } + + trx = UT_LIST_GET_NEXT(trx_list, trx); + } + + mutex_exit(&kernel_mutex); + + if (trx) { + if (trx->conc_state != TRX_PREPARED) { + + return(NULL); + } + + return(trx); + } else { + return(NULL); + } +} === added file 'storage/xtradb/trx/trx0undo.c' --- a/storage/xtradb/trx/trx0undo.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/trx/trx0undo.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,2021 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Transaction undo log + +Created 3/26/1996 Heikki Tuuri +*******************************************************/ + +#include "trx0undo.h" + +#ifdef UNIV_NONINL +#include "trx0undo.ic" +#endif + +#include "fsp0fsp.h" +#include "mach0data.h" +#include "trx0rseg.h" +#include "trx0trx.h" +#include "srv0srv.h" +#include "trx0rec.h" +#include "trx0purge.h" +#include "trx0xa.h" + +/* How should the old versions in the history list be managed? + ---------------------------------------------------------- +If each transaction is given a whole page for its update undo log, file +space consumption can be 10 times higher than necessary. Therefore, +partly filled update undo log pages should be reusable. But then there +is no way individual pages can be ordered so that the ordering agrees +with the serialization numbers of the transactions on the pages. Thus, +the history list must be formed of undo logs, not their header pages as +it was in the old implementation. + However, on a single header page the transactions are placed in +the order of their serialization numbers. As old versions are purged, we +may free the page when the last transaction on the page has been purged. + A problem is that the purge has to go through the transactions +in the serialization order. This means that we have to look through all +rollback segments for the one that has the smallest transaction number +in its history list. + When should we do a purge? A purge is necessary when space is +running out in any of the rollback segments. Then we may have to purge +also old version which might be needed by some consistent read. How do +we trigger the start of a purge? When a transaction writes to an undo log, +it may notice that the space is running out. When a read view is closed, +it may make some history superfluous. The server can have an utility which +periodically checks if it can purge some history. + In a parallellized purge we have the problem that a query thread +can remove a delete marked clustered index record before another query +thread has processed an earlier version of the record, which cannot then +be done because the row cannot be constructed from the clustered index +record. To avoid this problem, we will store in the update and delete mark +undo record also the columns necessary to construct the secondary index +entries which are modified. + We can latch the stack of versions of a single clustered index record +by taking a latch on the clustered index page. As long as the latch is held, +no new versions can be added and no versions removed by undo. But, a purge +can still remove old versions from the bottom of the stack. */ + +/* How to protect rollback segments, undo logs, and history lists with + ------------------------------------------------------------------- +latches? +------- +The contention of the kernel mutex should be minimized. When a transaction +does its first insert or modify in an index, an undo log is assigned for it. +Then we must have an x-latch to the rollback segment header. + When the transaction does more modifys or rolls back, the undo log is +protected with undo_mutex in the transaction. + When the transaction commits, its insert undo log is either reset and +cached for a fast reuse, or freed. In these cases we must have an x-latch on +the rollback segment page. The update undo log is put to the history list. If +it is not suitable for reuse, its slot in the rollback segment is reset. In +both cases, an x-latch must be acquired on the rollback segment. + The purge operation steps through the history list without modifying +it until a truncate operation occurs, which can remove undo logs from the end +of the list and release undo log segments. In stepping through the list, +s-latches on the undo log pages are enough, but in a truncate, x-latches must +be obtained on the rollback segment and individual pages. */ + +/************************************************************************ +Initializes the fields in an undo log segment page. */ +static +void +trx_undo_page_init( +/*===============*/ + page_t* undo_page, /* in: undo log segment page */ + ulint type, /* in: undo log segment type */ + mtr_t* mtr); /* in: mtr */ +/************************************************************************ +Creates and initializes an undo log memory object. */ +static +trx_undo_t* +trx_undo_mem_create( +/*================*/ + /* out, own: the undo log memory object */ + trx_rseg_t* rseg, /* in: rollback segment memory object */ + ulint id, /* in: slot index within rseg */ + ulint type, /* in: type of the log: TRX_UNDO_INSERT or + TRX_UNDO_UPDATE */ + dulint trx_id, /* in: id of the trx for which the undo log + is created */ + const XID* xid, /* in: X/Open XA transaction identification*/ + ulint page_no,/* in: undo log header page number */ + ulint offset);/* in: undo log header byte offset on page */ +/******************************************************************* +Initializes a cached insert undo log header page for new use. NOTE that this +function has its own log record type MLOG_UNDO_HDR_REUSE. You must NOT change +the operation of this function! */ +static +ulint +trx_undo_insert_header_reuse( +/*=========================*/ + /* out: undo log header byte offset on page */ + page_t* undo_page, /* in: insert undo log segment header page, + x-latched */ + dulint trx_id, /* in: transaction id */ + mtr_t* mtr); /* in: mtr */ +/************************************************************************** +If an update undo log can be discarded immediately, this function frees the +space, resetting the page to the proper state for caching. */ +static +void +trx_undo_discard_latest_update_undo( +/*================================*/ + page_t* undo_page, /* in: header page of an undo log of size 1 */ + mtr_t* mtr); /* in: mtr */ + + +/*************************************************************************** +Gets the previous record in an undo log from the previous page. */ +static +trx_undo_rec_t* +trx_undo_get_prev_rec_from_prev_page( +/*=================================*/ + /* out: undo log record, the page s-latched, + NULL if none */ + trx_undo_rec_t* rec, /* in: undo record */ + ulint page_no,/* in: undo log header page number */ + ulint offset, /* in: undo log header offset on page */ + mtr_t* mtr) /* in: mtr */ +{ + ulint space; + ulint zip_size; + ulint prev_page_no; + page_t* prev_page; + page_t* undo_page; + + undo_page = page_align(rec); + + prev_page_no = flst_get_prev_addr(undo_page + TRX_UNDO_PAGE_HDR + + TRX_UNDO_PAGE_NODE, mtr) + .page; + + if (prev_page_no == FIL_NULL) { + + return(NULL); + } + + space = page_get_space_id(undo_page); + zip_size = fil_space_get_zip_size(space); + + prev_page = trx_undo_page_get_s_latched(space, zip_size, + prev_page_no, mtr); + + return(trx_undo_page_get_last_rec(prev_page, page_no, offset)); +} + +/*************************************************************************** +Gets the previous record in an undo log. */ +UNIV_INTERN +trx_undo_rec_t* +trx_undo_get_prev_rec( +/*==================*/ + /* out: undo log record, the page s-latched, + NULL if none */ + trx_undo_rec_t* rec, /* in: undo record */ + ulint page_no,/* in: undo log header page number */ + ulint offset, /* in: undo log header offset on page */ + mtr_t* mtr) /* in: mtr */ +{ + trx_undo_rec_t* prev_rec; + + prev_rec = trx_undo_page_get_prev_rec(rec, page_no, offset); + + if (prev_rec) { + + return(prev_rec); + } + + /* We have to go to the previous undo log page to look for the + previous record */ + + return(trx_undo_get_prev_rec_from_prev_page(rec, page_no, offset, + mtr)); +} + +/*************************************************************************** +Gets the next record in an undo log from the next page. */ +static +trx_undo_rec_t* +trx_undo_get_next_rec_from_next_page( +/*=================================*/ + /* out: undo log record, the page latched, NULL if + none */ + ulint space, /* in: undo log header space */ + ulint zip_size,/* in: compressed page size in bytes + or 0 for uncompressed pages */ + page_t* undo_page, /* in: undo log page */ + ulint page_no,/* in: undo log header page number */ + ulint offset, /* in: undo log header offset on page */ + ulint mode, /* in: latch mode: RW_S_LATCH or RW_X_LATCH */ + mtr_t* mtr) /* in: mtr */ +{ + trx_ulogf_t* log_hdr; + ulint next_page_no; + page_t* next_page; + ulint next; + + if (page_no == page_get_page_no(undo_page)) { + + log_hdr = undo_page + offset; + next = mach_read_from_2(log_hdr + TRX_UNDO_NEXT_LOG); + + if (next != 0) { + + return(NULL); + } + } + + next_page_no = flst_get_next_addr(undo_page + TRX_UNDO_PAGE_HDR + + TRX_UNDO_PAGE_NODE, mtr) + .page; + if (next_page_no == FIL_NULL) { + + return(NULL); + } + + if (mode == RW_S_LATCH) { + next_page = trx_undo_page_get_s_latched(space, zip_size, + next_page_no, mtr); + } else { + ut_ad(mode == RW_X_LATCH); + next_page = trx_undo_page_get(space, zip_size, + next_page_no, mtr); + } + + return(trx_undo_page_get_first_rec(next_page, page_no, offset)); +} + +/*************************************************************************** +Gets the next record in an undo log. */ +UNIV_INTERN +trx_undo_rec_t* +trx_undo_get_next_rec( +/*==================*/ + /* out: undo log record, the page s-latched, + NULL if none */ + trx_undo_rec_t* rec, /* in: undo record */ + ulint page_no,/* in: undo log header page number */ + ulint offset, /* in: undo log header offset on page */ + mtr_t* mtr) /* in: mtr */ +{ + ulint space; + ulint zip_size; + trx_undo_rec_t* next_rec; + + next_rec = trx_undo_page_get_next_rec(rec, page_no, offset); + + if (next_rec) { + return(next_rec); + } + + space = page_get_space_id(page_align(rec)); + zip_size = fil_space_get_zip_size(space); + + return(trx_undo_get_next_rec_from_next_page(space, zip_size, + page_align(rec), + page_no, offset, + RW_S_LATCH, mtr)); +} + +/*************************************************************************** +Gets the first record in an undo log. */ +UNIV_INTERN +trx_undo_rec_t* +trx_undo_get_first_rec( +/*===================*/ + /* out: undo log record, the page latched, NULL if + none */ + ulint space, /* in: undo log header space */ + ulint zip_size,/* in: compressed page size in bytes + or 0 for uncompressed pages */ + ulint page_no,/* in: undo log header page number */ + ulint offset, /* in: undo log header offset on page */ + ulint mode, /* in: latching mode: RW_S_LATCH or RW_X_LATCH */ + mtr_t* mtr) /* in: mtr */ +{ + page_t* undo_page; + trx_undo_rec_t* rec; + + if (mode == RW_S_LATCH) { + undo_page = trx_undo_page_get_s_latched(space, zip_size, + page_no, mtr); + } else { + undo_page = trx_undo_page_get(space, zip_size, page_no, mtr); + } + + rec = trx_undo_page_get_first_rec(undo_page, page_no, offset); + + if (rec) { + return(rec); + } + + return(trx_undo_get_next_rec_from_next_page(space, zip_size, + undo_page, page_no, offset, + mode, mtr)); +} + +/*============== UNDO LOG FILE COPY CREATION AND FREEING ==================*/ + +/************************************************************************** +Writes the mtr log entry of an undo log page initialization. */ +UNIV_INLINE +void +trx_undo_page_init_log( +/*===================*/ + page_t* undo_page, /* in: undo log page */ + ulint type, /* in: undo log type */ + mtr_t* mtr) /* in: mtr */ +{ + mlog_write_initial_log_record(undo_page, MLOG_UNDO_INIT, mtr); + + mlog_catenate_ulint_compressed(mtr, type); +} + +/*************************************************************** +Parses the redo log entry of an undo log page initialization. */ +UNIV_INTERN +byte* +trx_undo_parse_page_init( +/*=====================*/ + /* out: end of log record or NULL */ + byte* ptr, /* in: buffer */ + byte* end_ptr,/* in: buffer end */ + page_t* page, /* in: page or NULL */ + mtr_t* mtr) /* in: mtr or NULL */ +{ + ulint type; + + ptr = mach_parse_compressed(ptr, end_ptr, &type); + + if (ptr == NULL) { + + return(NULL); + } + + if (page) { + trx_undo_page_init(page, type, mtr); + } + + return(ptr); +} + +/************************************************************************ +Initializes the fields in an undo log segment page. */ +static +void +trx_undo_page_init( +/*===============*/ + page_t* undo_page, /* in: undo log segment page */ + ulint type, /* in: undo log segment type */ + mtr_t* mtr) /* in: mtr */ +{ + trx_upagef_t* page_hdr; + + page_hdr = undo_page + TRX_UNDO_PAGE_HDR; + + mach_write_to_2(page_hdr + TRX_UNDO_PAGE_TYPE, type); + + mach_write_to_2(page_hdr + TRX_UNDO_PAGE_START, + TRX_UNDO_PAGE_HDR + TRX_UNDO_PAGE_HDR_SIZE); + mach_write_to_2(page_hdr + TRX_UNDO_PAGE_FREE, + TRX_UNDO_PAGE_HDR + TRX_UNDO_PAGE_HDR_SIZE); + + fil_page_set_type(undo_page, FIL_PAGE_UNDO_LOG); + + trx_undo_page_init_log(undo_page, type, mtr); +} + +/******************************************************************* +Creates a new undo log segment in file. */ +static +ulint +trx_undo_seg_create( +/*================*/ + /* out: DB_SUCCESS if page creation OK + possible error codes are: + DB_TOO_MANY_CONCURRENT_TRXS + DB_OUT_OF_FILE_SPACE */ + trx_rseg_t* rseg __attribute__((unused)),/* in: rollback segment */ + trx_rsegf_t* rseg_hdr,/* in: rollback segment header, page + x-latched */ + ulint type, /* in: type of the segment: TRX_UNDO_INSERT or + TRX_UNDO_UPDATE */ + ulint* id, /* out: slot index within rseg header */ + page_t** undo_page, + /* out: segment header page x-latched, NULL + if there was an error */ + mtr_t* mtr) /* in: mtr */ +{ + ulint slot_no; + ulint space; + buf_block_t* block; + trx_upagef_t* page_hdr; + trx_usegf_t* seg_hdr; + ulint n_reserved; + ibool success; + ulint err = DB_SUCCESS; + + ut_ad(mtr && id && rseg_hdr); + ut_ad(mutex_own(&(rseg->mutex))); + + /* fputs(type == TRX_UNDO_INSERT + ? "Creating insert undo log segment\n" + : "Creating update undo log segment\n", stderr); */ + slot_no = trx_rsegf_undo_find_free(rseg_hdr, mtr); + + if (slot_no == ULINT_UNDEFINED) { + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: Warning: cannot find a free slot for" + " an undo log. Do you have too\n" + "InnoDB: many active transactions" + " running concurrently?\n"); + + return(DB_TOO_MANY_CONCURRENT_TRXS); + } + + space = page_get_space_id(page_align(rseg_hdr)); + + success = fsp_reserve_free_extents(&n_reserved, space, 2, FSP_UNDO, + mtr); + if (!success) { + + return(DB_OUT_OF_FILE_SPACE); + } + + /* Allocate a new file segment for the undo log */ + block = fseg_create_general(space, 0, + TRX_UNDO_SEG_HDR + + TRX_UNDO_FSEG_HEADER, TRUE, mtr); + + fil_space_release_free_extents(space, n_reserved); + + if (block == NULL) { + /* No space left */ + + return(DB_OUT_OF_FILE_SPACE); + } + + buf_block_dbg_add_level(block, SYNC_TRX_UNDO_PAGE); + + *undo_page = buf_block_get_frame(block); + + page_hdr = *undo_page + TRX_UNDO_PAGE_HDR; + seg_hdr = *undo_page + TRX_UNDO_SEG_HDR; + + trx_undo_page_init(*undo_page, type, mtr); + + mlog_write_ulint(page_hdr + TRX_UNDO_PAGE_FREE, + TRX_UNDO_SEG_HDR + TRX_UNDO_SEG_HDR_SIZE, + MLOG_2BYTES, mtr); + + mlog_write_ulint(seg_hdr + TRX_UNDO_LAST_LOG, 0, MLOG_2BYTES, mtr); + + flst_init(seg_hdr + TRX_UNDO_PAGE_LIST, mtr); + + flst_add_last(seg_hdr + TRX_UNDO_PAGE_LIST, + page_hdr + TRX_UNDO_PAGE_NODE, mtr); + + trx_rsegf_set_nth_undo(rseg_hdr, slot_no, + page_get_page_no(*undo_page), mtr); + *id = slot_no; + + return(err); +} + +/************************************************************************** +Writes the mtr log entry of an undo log header initialization. */ +UNIV_INLINE +void +trx_undo_header_create_log( +/*=======================*/ + page_t* undo_page, /* in: undo log header page */ + dulint trx_id, /* in: transaction id */ + mtr_t* mtr) /* in: mtr */ +{ + mlog_write_initial_log_record(undo_page, MLOG_UNDO_HDR_CREATE, mtr); + + mlog_catenate_dulint_compressed(mtr, trx_id); +} + +/******************************************************************* +Creates a new undo log header in file. NOTE that this function has its own +log record type MLOG_UNDO_HDR_CREATE. You must NOT change the operation of +this function! */ +static +ulint +trx_undo_header_create( +/*===================*/ + /* out: header byte offset on page */ + page_t* undo_page, /* in: undo log segment header page, + x-latched; it is assumed that there are + TRX_UNDO_LOG_XA_HDR_SIZE bytes free space + on it */ + dulint trx_id, /* in: transaction id */ + mtr_t* mtr) /* in: mtr */ +{ + trx_upagef_t* page_hdr; + trx_usegf_t* seg_hdr; + trx_ulogf_t* log_hdr; + trx_ulogf_t* prev_log_hdr; + ulint prev_log; + ulint free; + ulint new_free; + + ut_ad(mtr && undo_page); + + page_hdr = undo_page + TRX_UNDO_PAGE_HDR; + seg_hdr = undo_page + TRX_UNDO_SEG_HDR; + + free = mach_read_from_2(page_hdr + TRX_UNDO_PAGE_FREE); + + log_hdr = undo_page + free; + + new_free = free + TRX_UNDO_LOG_OLD_HDR_SIZE; + + ut_a(free + TRX_UNDO_LOG_XA_HDR_SIZE < UNIV_PAGE_SIZE - 100); + + mach_write_to_2(page_hdr + TRX_UNDO_PAGE_START, new_free); + + mach_write_to_2(page_hdr + TRX_UNDO_PAGE_FREE, new_free); + + mach_write_to_2(seg_hdr + TRX_UNDO_STATE, TRX_UNDO_ACTIVE); + + prev_log = mach_read_from_2(seg_hdr + TRX_UNDO_LAST_LOG); + + if (prev_log != 0) { + prev_log_hdr = undo_page + prev_log; + + mach_write_to_2(prev_log_hdr + TRX_UNDO_NEXT_LOG, free); + } + + mach_write_to_2(seg_hdr + TRX_UNDO_LAST_LOG, free); + + log_hdr = undo_page + free; + + mach_write_to_2(log_hdr + TRX_UNDO_DEL_MARKS, TRUE); + + mach_write_to_8(log_hdr + TRX_UNDO_TRX_ID, trx_id); + mach_write_to_2(log_hdr + TRX_UNDO_LOG_START, new_free); + + mach_write_to_1(log_hdr + TRX_UNDO_XID_EXISTS, FALSE); + mach_write_to_1(log_hdr + TRX_UNDO_DICT_TRANS, FALSE); + + mach_write_to_2(log_hdr + TRX_UNDO_NEXT_LOG, 0); + mach_write_to_2(log_hdr + TRX_UNDO_PREV_LOG, prev_log); + + /* Write the log record about the header creation */ + trx_undo_header_create_log(undo_page, trx_id, mtr); + + return(free); +} + +/************************************************************************ +Write X/Open XA Transaction Identification (XID) to undo log header */ +static +void +trx_undo_write_xid( +/*===============*/ + trx_ulogf_t* log_hdr,/* in: undo log header */ + const XID* xid, /* in: X/Open XA Transaction Identification */ + mtr_t* mtr) /* in: mtr */ +{ + mlog_write_ulint(log_hdr + TRX_UNDO_XA_FORMAT, + (ulint)xid->formatID, MLOG_4BYTES, mtr); + + mlog_write_ulint(log_hdr + TRX_UNDO_XA_TRID_LEN, + (ulint)xid->gtrid_length, MLOG_4BYTES, mtr); + + mlog_write_ulint(log_hdr + TRX_UNDO_XA_BQUAL_LEN, + (ulint)xid->bqual_length, MLOG_4BYTES, mtr); + + mlog_write_string(log_hdr + TRX_UNDO_XA_XID, (const byte*) xid->data, + XIDDATASIZE, mtr); +} + +/************************************************************************ +Read X/Open XA Transaction Identification (XID) from undo log header */ +static +void +trx_undo_read_xid( +/*==============*/ + trx_ulogf_t* log_hdr,/* in: undo log header */ + XID* xid) /* out: X/Open XA Transaction Identification */ +{ + xid->formatID = (long)mach_read_from_4(log_hdr + TRX_UNDO_XA_FORMAT); + + xid->gtrid_length + = (long) mach_read_from_4(log_hdr + TRX_UNDO_XA_TRID_LEN); + xid->bqual_length + = (long) mach_read_from_4(log_hdr + TRX_UNDO_XA_BQUAL_LEN); + + memcpy(xid->data, log_hdr + TRX_UNDO_XA_XID, XIDDATASIZE); +} + +/******************************************************************* +Adds space for the XA XID after an undo log old-style header. */ +static +void +trx_undo_header_add_space_for_xid( +/*==============================*/ + page_t* undo_page,/* in: undo log segment header page */ + trx_ulogf_t* log_hdr,/* in: undo log header */ + mtr_t* mtr) /* in: mtr */ +{ + trx_upagef_t* page_hdr; + ulint free; + ulint new_free; + + page_hdr = undo_page + TRX_UNDO_PAGE_HDR; + + free = mach_read_from_2(page_hdr + TRX_UNDO_PAGE_FREE); + + /* free is now the end offset of the old style undo log header */ + + ut_a(free == (ulint)(log_hdr - undo_page) + TRX_UNDO_LOG_OLD_HDR_SIZE); + + new_free = free + (TRX_UNDO_LOG_XA_HDR_SIZE + - TRX_UNDO_LOG_OLD_HDR_SIZE); + + /* Add space for a XID after the header, update the free offset + fields on the undo log page and in the undo log header */ + + mlog_write_ulint(page_hdr + TRX_UNDO_PAGE_START, new_free, + MLOG_2BYTES, mtr); + + mlog_write_ulint(page_hdr + TRX_UNDO_PAGE_FREE, new_free, + MLOG_2BYTES, mtr); + + mlog_write_ulint(log_hdr + TRX_UNDO_LOG_START, new_free, + MLOG_2BYTES, mtr); +} + +/************************************************************************** +Writes the mtr log entry of an undo log header reuse. */ +UNIV_INLINE +void +trx_undo_insert_header_reuse_log( +/*=============================*/ + page_t* undo_page, /* in: undo log header page */ + dulint trx_id, /* in: transaction id */ + mtr_t* mtr) /* in: mtr */ +{ + mlog_write_initial_log_record(undo_page, MLOG_UNDO_HDR_REUSE, mtr); + + mlog_catenate_dulint_compressed(mtr, trx_id); +} + +/*************************************************************** +Parses the redo log entry of an undo log page header create or reuse. */ +UNIV_INTERN +byte* +trx_undo_parse_page_header( +/*=======================*/ + /* out: end of log record or NULL */ + ulint type, /* in: MLOG_UNDO_HDR_CREATE or MLOG_UNDO_HDR_REUSE */ + byte* ptr, /* in: buffer */ + byte* end_ptr,/* in: buffer end */ + page_t* page, /* in: page or NULL */ + mtr_t* mtr) /* in: mtr or NULL */ +{ + dulint trx_id; + + ptr = mach_dulint_parse_compressed(ptr, end_ptr, &trx_id); + + if (ptr == NULL) { + + return(NULL); + } + + if (page) { + if (type == MLOG_UNDO_HDR_CREATE) { + trx_undo_header_create(page, trx_id, mtr); + } else { + ut_ad(type == MLOG_UNDO_HDR_REUSE); + trx_undo_insert_header_reuse(page, trx_id, mtr); + } + } + + return(ptr); +} + +/******************************************************************* +Initializes a cached insert undo log header page for new use. NOTE that this +function has its own log record type MLOG_UNDO_HDR_REUSE. You must NOT change +the operation of this function! */ +static +ulint +trx_undo_insert_header_reuse( +/*=========================*/ + /* out: undo log header byte offset on page */ + page_t* undo_page, /* in: insert undo log segment header page, + x-latched */ + dulint trx_id, /* in: transaction id */ + mtr_t* mtr) /* in: mtr */ +{ + trx_upagef_t* page_hdr; + trx_usegf_t* seg_hdr; + trx_ulogf_t* log_hdr; + ulint free; + ulint new_free; + + ut_ad(mtr && undo_page); + + page_hdr = undo_page + TRX_UNDO_PAGE_HDR; + seg_hdr = undo_page + TRX_UNDO_SEG_HDR; + + free = TRX_UNDO_SEG_HDR + TRX_UNDO_SEG_HDR_SIZE; + + ut_a(free + TRX_UNDO_LOG_XA_HDR_SIZE < UNIV_PAGE_SIZE - 100); + + log_hdr = undo_page + free; + + new_free = free + TRX_UNDO_LOG_OLD_HDR_SIZE; + + /* Insert undo data is not needed after commit: we may free all + the space on the page */ + + ut_a(mach_read_from_2(undo_page + TRX_UNDO_PAGE_HDR + + TRX_UNDO_PAGE_TYPE) + == TRX_UNDO_INSERT); + + mach_write_to_2(page_hdr + TRX_UNDO_PAGE_START, new_free); + + mach_write_to_2(page_hdr + TRX_UNDO_PAGE_FREE, new_free); + + mach_write_to_2(seg_hdr + TRX_UNDO_STATE, TRX_UNDO_ACTIVE); + + log_hdr = undo_page + free; + + mach_write_to_8(log_hdr + TRX_UNDO_TRX_ID, trx_id); + mach_write_to_2(log_hdr + TRX_UNDO_LOG_START, new_free); + + mach_write_to_1(log_hdr + TRX_UNDO_XID_EXISTS, FALSE); + mach_write_to_1(log_hdr + TRX_UNDO_DICT_TRANS, FALSE); + + /* Write the log record MLOG_UNDO_HDR_REUSE */ + trx_undo_insert_header_reuse_log(undo_page, trx_id, mtr); + + return(free); +} + +/************************************************************************** +Writes the redo log entry of an update undo log header discard. */ +UNIV_INLINE +void +trx_undo_discard_latest_log( +/*========================*/ + page_t* undo_page, /* in: undo log header page */ + mtr_t* mtr) /* in: mtr */ +{ + mlog_write_initial_log_record(undo_page, MLOG_UNDO_HDR_DISCARD, mtr); +} + +/*************************************************************** +Parses the redo log entry of an undo log page header discard. */ +UNIV_INTERN +byte* +trx_undo_parse_discard_latest( +/*==========================*/ + /* out: end of log record or NULL */ + byte* ptr, /* in: buffer */ + byte* end_ptr __attribute__((unused)), /* in: buffer end */ + page_t* page, /* in: page or NULL */ + mtr_t* mtr) /* in: mtr or NULL */ +{ + ut_ad(end_ptr); + + if (page) { + trx_undo_discard_latest_update_undo(page, mtr); + } + + return(ptr); +} + +/************************************************************************** +If an update undo log can be discarded immediately, this function frees the +space, resetting the page to the proper state for caching. */ +static +void +trx_undo_discard_latest_update_undo( +/*================================*/ + page_t* undo_page, /* in: header page of an undo log of size 1 */ + mtr_t* mtr) /* in: mtr */ +{ + trx_usegf_t* seg_hdr; + trx_upagef_t* page_hdr; + trx_ulogf_t* log_hdr; + trx_ulogf_t* prev_log_hdr; + ulint free; + ulint prev_hdr_offset; + + seg_hdr = undo_page + TRX_UNDO_SEG_HDR; + page_hdr = undo_page + TRX_UNDO_PAGE_HDR; + + free = mach_read_from_2(seg_hdr + TRX_UNDO_LAST_LOG); + log_hdr = undo_page + free; + + prev_hdr_offset = mach_read_from_2(log_hdr + TRX_UNDO_PREV_LOG); + + if (prev_hdr_offset != 0) { + prev_log_hdr = undo_page + prev_hdr_offset; + + mach_write_to_2(page_hdr + TRX_UNDO_PAGE_START, + mach_read_from_2(prev_log_hdr + + TRX_UNDO_LOG_START)); + mach_write_to_2(prev_log_hdr + TRX_UNDO_NEXT_LOG, 0); + } + + mach_write_to_2(page_hdr + TRX_UNDO_PAGE_FREE, free); + + mach_write_to_2(seg_hdr + TRX_UNDO_STATE, TRX_UNDO_CACHED); + mach_write_to_2(seg_hdr + TRX_UNDO_LAST_LOG, prev_hdr_offset); + + trx_undo_discard_latest_log(undo_page, mtr); +} + +/************************************************************************ +Tries to add a page to the undo log segment where the undo log is placed. */ +UNIV_INTERN +ulint +trx_undo_add_page( +/*==============*/ + /* out: page number if success, else + FIL_NULL */ + trx_t* trx, /* in: transaction */ + trx_undo_t* undo, /* in: undo log memory object */ + mtr_t* mtr) /* in: mtr which does not have a latch to any + undo log page; the caller must have reserved + the rollback segment mutex */ +{ + page_t* header_page; + page_t* new_page; + trx_rseg_t* rseg; + ulint page_no; + ulint n_reserved; + ibool success; + + ut_ad(mutex_own(&(trx->undo_mutex))); + ut_ad(!mutex_own(&kernel_mutex)); + ut_ad(mutex_own(&(trx->rseg->mutex))); + + rseg = trx->rseg; + + if (rseg->curr_size == rseg->max_size) { + + return(FIL_NULL); + } + + header_page = trx_undo_page_get(undo->space, undo->zip_size, + undo->hdr_page_no, mtr); + + success = fsp_reserve_free_extents(&n_reserved, undo->space, 1, + FSP_UNDO, mtr); + if (!success) { + + return(FIL_NULL); + } + + page_no = fseg_alloc_free_page_general(header_page + TRX_UNDO_SEG_HDR + + TRX_UNDO_FSEG_HEADER, + undo->top_page_no + 1, FSP_UP, + TRUE, mtr); + + fil_space_release_free_extents(undo->space, n_reserved); + + if (page_no == FIL_NULL) { + + /* No space left */ + + return(FIL_NULL); + } + + undo->last_page_no = page_no; + + new_page = trx_undo_page_get(undo->space, undo->zip_size, + page_no, mtr); + + trx_undo_page_init(new_page, undo->type, mtr); + + flst_add_last(header_page + TRX_UNDO_SEG_HDR + TRX_UNDO_PAGE_LIST, + new_page + TRX_UNDO_PAGE_HDR + TRX_UNDO_PAGE_NODE, mtr); + undo->size++; + rseg->curr_size++; + + return(page_no); +} + +/************************************************************************ +Frees an undo log page that is not the header page. */ +static +ulint +trx_undo_free_page( +/*===============*/ + /* out: last page number in remaining log */ + trx_rseg_t* rseg, /* in: rollback segment */ + ibool in_history, /* in: TRUE if the undo log is in the history + list */ + ulint space, /* in: space */ + ulint hdr_page_no, /* in: header page number */ + ulint page_no, /* in: page number to free: must not be the + header page */ + mtr_t* mtr) /* in: mtr which does not have a latch to any + undo log page; the caller must have reserved + the rollback segment mutex */ +{ + page_t* header_page; + page_t* undo_page; + fil_addr_t last_addr; + trx_rsegf_t* rseg_header; + ulint hist_size; + ulint zip_size; + + ut_a(hdr_page_no != page_no); + ut_ad(!mutex_own(&kernel_mutex)); + ut_ad(mutex_own(&(rseg->mutex))); + + zip_size = rseg->zip_size; + + undo_page = trx_undo_page_get(space, zip_size, page_no, mtr); + + header_page = trx_undo_page_get(space, zip_size, hdr_page_no, mtr); + + flst_remove(header_page + TRX_UNDO_SEG_HDR + TRX_UNDO_PAGE_LIST, + undo_page + TRX_UNDO_PAGE_HDR + TRX_UNDO_PAGE_NODE, mtr); + + fseg_free_page(header_page + TRX_UNDO_SEG_HDR + TRX_UNDO_FSEG_HEADER, + space, page_no, mtr); + + last_addr = flst_get_last(header_page + TRX_UNDO_SEG_HDR + + TRX_UNDO_PAGE_LIST, mtr); + rseg->curr_size--; + + if (in_history) { + rseg_header = trx_rsegf_get(space, zip_size, + rseg->page_no, mtr); + + hist_size = mtr_read_ulint(rseg_header + TRX_RSEG_HISTORY_SIZE, + MLOG_4BYTES, mtr); + ut_ad(hist_size > 0); + mlog_write_ulint(rseg_header + TRX_RSEG_HISTORY_SIZE, + hist_size - 1, MLOG_4BYTES, mtr); + } + + return(last_addr.page); +} + +/************************************************************************ +Frees an undo log page when there is also the memory object for the undo +log. */ +static +void +trx_undo_free_page_in_rollback( +/*===========================*/ + trx_t* trx __attribute__((unused)), /* in: transaction */ + trx_undo_t* undo, /* in: undo log memory copy */ + ulint page_no,/* in: page number to free: must not be the + header page */ + mtr_t* mtr) /* in: mtr which does not have a latch to any + undo log page; the caller must have reserved + the rollback segment mutex */ +{ + ulint last_page_no; + + ut_ad(undo->hdr_page_no != page_no); + ut_ad(mutex_own(&(trx->undo_mutex))); + + last_page_no = trx_undo_free_page(undo->rseg, FALSE, undo->space, + undo->hdr_page_no, page_no, mtr); + + undo->last_page_no = last_page_no; + undo->size--; +} + +/************************************************************************ +Empties an undo log header page of undo records for that undo log. Other +undo logs may still have records on that page, if it is an update undo log. */ +static +void +trx_undo_empty_header_page( +/*=======================*/ + ulint space, /* in: space */ + ulint zip_size, /* in: compressed page size in bytes + or 0 for uncompressed pages */ + ulint hdr_page_no, /* in: header page number */ + ulint hdr_offset, /* in: header offset */ + mtr_t* mtr) /* in: mtr */ +{ + page_t* header_page; + trx_ulogf_t* log_hdr; + ulint end; + + header_page = trx_undo_page_get(space, zip_size, hdr_page_no, mtr); + + log_hdr = header_page + hdr_offset; + + end = trx_undo_page_get_end(header_page, hdr_page_no, hdr_offset); + + mlog_write_ulint(log_hdr + TRX_UNDO_LOG_START, end, MLOG_2BYTES, mtr); +} + +/*************************************************************************** +Truncates an undo log from the end. This function is used during a rollback +to free space from an undo log. */ +UNIV_INTERN +void +trx_undo_truncate_end( +/*==================*/ + trx_t* trx, /* in: transaction whose undo log it is */ + trx_undo_t* undo, /* in: undo log */ + dulint limit) /* in: all undo records with undo number + >= this value should be truncated */ +{ + page_t* undo_page; + ulint last_page_no; + trx_undo_rec_t* rec; + trx_undo_rec_t* trunc_here; + trx_rseg_t* rseg; + mtr_t mtr; + + ut_ad(mutex_own(&(trx->undo_mutex))); + ut_ad(mutex_own(&(trx->rseg->mutex))); + + rseg = trx->rseg; + + for (;;) { + mtr_start(&mtr); + + trunc_here = NULL; + + last_page_no = undo->last_page_no; + + undo_page = trx_undo_page_get(undo->space, undo->zip_size, + last_page_no, &mtr); + + rec = trx_undo_page_get_last_rec(undo_page, undo->hdr_page_no, + undo->hdr_offset); + for (;;) { + if (rec == NULL) { + if (last_page_no == undo->hdr_page_no) { + + goto function_exit; + } + + trx_undo_free_page_in_rollback( + trx, undo, last_page_no, &mtr); + break; + } + + if (ut_dulint_cmp(trx_undo_rec_get_undo_no(rec), limit) + >= 0) { + /* Truncate at least this record off, maybe + more */ + trunc_here = rec; + } else { + goto function_exit; + } + + rec = trx_undo_page_get_prev_rec(rec, + undo->hdr_page_no, + undo->hdr_offset); + } + + mtr_commit(&mtr); + } + +function_exit: + if (trunc_here) { + mlog_write_ulint(undo_page + TRX_UNDO_PAGE_HDR + + TRX_UNDO_PAGE_FREE, + trunc_here - undo_page, MLOG_2BYTES, &mtr); + } + + mtr_commit(&mtr); +} + +/*************************************************************************** +Truncates an undo log from the start. This function is used during a purge +operation. */ +UNIV_INTERN +void +trx_undo_truncate_start( +/*====================*/ + trx_rseg_t* rseg, /* in: rollback segment */ + ulint space, /* in: space id of the log */ + ulint hdr_page_no, /* in: header page number */ + ulint hdr_offset, /* in: header offset on the page */ + dulint limit) /* in: all undo pages with undo numbers < + this value should be truncated; NOTE that + the function only frees whole pages; the + header page is not freed, but emptied, if + all the records there are < limit */ +{ + page_t* undo_page; + trx_undo_rec_t* rec; + trx_undo_rec_t* last_rec; + ulint page_no; + mtr_t mtr; + + ut_ad(mutex_own(&(rseg->mutex))); + + if (ut_dulint_is_zero(limit)) { + + return; + } +loop: + mtr_start(&mtr); + + rec = trx_undo_get_first_rec(space, rseg->zip_size, + hdr_page_no, hdr_offset, + RW_X_LATCH, &mtr); + if (rec == NULL) { + /* Already empty */ + + mtr_commit(&mtr); + + return; + } + + undo_page = page_align(rec); + + last_rec = trx_undo_page_get_last_rec(undo_page, hdr_page_no, + hdr_offset); + if (ut_dulint_cmp(trx_undo_rec_get_undo_no(last_rec), limit) >= 0) { + + mtr_commit(&mtr); + + return; + } + + page_no = page_get_page_no(undo_page); + + if (page_no == hdr_page_no) { + trx_undo_empty_header_page(space, rseg->zip_size, + hdr_page_no, hdr_offset, + &mtr); + } else { + trx_undo_free_page(rseg, TRUE, space, hdr_page_no, + page_no, &mtr); + } + + mtr_commit(&mtr); + + goto loop; +} + +/************************************************************************** +Frees an undo log segment which is not in the history list. */ +static +void +trx_undo_seg_free( +/*==============*/ + trx_undo_t* undo) /* in: undo log */ +{ + trx_rseg_t* rseg; + fseg_header_t* file_seg; + trx_rsegf_t* rseg_header; + trx_usegf_t* seg_header; + ibool finished; + mtr_t mtr; + + rseg = undo->rseg; + + do { + + mtr_start(&mtr); + + ut_ad(!mutex_own(&kernel_mutex)); + + mutex_enter(&(rseg->mutex)); + + seg_header = trx_undo_page_get(undo->space, undo->zip_size, + undo->hdr_page_no, + &mtr) + TRX_UNDO_SEG_HDR; + + file_seg = seg_header + TRX_UNDO_FSEG_HEADER; + + finished = fseg_free_step(file_seg, &mtr); + + if (finished) { + /* Update the rseg header */ + rseg_header = trx_rsegf_get( + rseg->space, rseg->zip_size, rseg->page_no, + &mtr); + trx_rsegf_set_nth_undo(rseg_header, undo->id, FIL_NULL, + &mtr); + } + + mutex_exit(&(rseg->mutex)); + mtr_commit(&mtr); + } while (!finished); +} + +/*========== UNDO LOG MEMORY COPY INITIALIZATION =====================*/ + +/************************************************************************ +Creates and initializes an undo log memory object according to the values +in the header in file, when the database is started. The memory object is +inserted in the appropriate list of rseg. */ +static +trx_undo_t* +trx_undo_mem_create_at_db_start( +/*============================*/ + /* out, own: the undo log memory object */ + trx_rseg_t* rseg, /* in: rollback segment memory object */ + ulint id, /* in: slot index within rseg */ + ulint page_no,/* in: undo log segment page number */ + mtr_t* mtr) /* in: mtr */ +{ + page_t* undo_page; + trx_upagef_t* page_header; + trx_usegf_t* seg_header; + trx_ulogf_t* undo_header; + trx_undo_t* undo; + ulint type; + ulint state; + dulint trx_id; + ulint offset; + fil_addr_t last_addr; + page_t* last_page; + trx_undo_rec_t* rec; + XID xid; + ibool xid_exists = FALSE; + + if (id >= TRX_RSEG_N_SLOTS) { + fprintf(stderr, + "InnoDB: Error: undo->id is %lu\n", (ulong) id); + ut_error; + } + + undo_page = trx_undo_page_get(rseg->space, rseg->zip_size, + page_no, mtr); + + page_header = undo_page + TRX_UNDO_PAGE_HDR; + + type = mtr_read_ulint(page_header + TRX_UNDO_PAGE_TYPE, MLOG_2BYTES, + mtr); + seg_header = undo_page + TRX_UNDO_SEG_HDR; + + state = mach_read_from_2(seg_header + TRX_UNDO_STATE); + + offset = mach_read_from_2(seg_header + TRX_UNDO_LAST_LOG); + + undo_header = undo_page + offset; + + trx_id = mtr_read_dulint(undo_header + TRX_UNDO_TRX_ID, mtr); + + xid_exists = mtr_read_ulint(undo_header + TRX_UNDO_XID_EXISTS, + MLOG_1BYTE, mtr); + + /* Read X/Open XA transaction identification if it exists, or + set it to NULL. */ + + memset(&xid, 0, sizeof(xid)); + xid.formatID = -1; + + if (xid_exists == TRUE) { + trx_undo_read_xid(undo_header, &xid); + } + + mutex_enter(&(rseg->mutex)); + + undo = trx_undo_mem_create(rseg, id, type, trx_id, &xid, + page_no, offset); + mutex_exit(&(rseg->mutex)); + + undo->dict_operation = mtr_read_ulint( + undo_header + TRX_UNDO_DICT_TRANS, MLOG_1BYTE, mtr); + + undo->table_id = mtr_read_dulint(undo_header + TRX_UNDO_TABLE_ID, mtr); + undo->state = state; + undo->size = flst_get_len(seg_header + TRX_UNDO_PAGE_LIST, mtr); + + /* If the log segment is being freed, the page list is inconsistent! */ + if (state == TRX_UNDO_TO_FREE) { + + goto add_to_list; + } + + last_addr = flst_get_last(seg_header + TRX_UNDO_PAGE_LIST, mtr); + + undo->last_page_no = last_addr.page; + undo->top_page_no = last_addr.page; + + last_page = trx_undo_page_get(rseg->space, rseg->zip_size, + undo->last_page_no, mtr); + + rec = trx_undo_page_get_last_rec(last_page, page_no, offset); + + if (rec == NULL) { + undo->empty = TRUE; + } else { + undo->empty = FALSE; + undo->top_offset = rec - last_page; + undo->top_undo_no = trx_undo_rec_get_undo_no(rec); + } +add_to_list: + if (type == TRX_UNDO_INSERT) { + if (state != TRX_UNDO_CACHED) { + UT_LIST_ADD_LAST(undo_list, rseg->insert_undo_list, + undo); + } else { + UT_LIST_ADD_LAST(undo_list, rseg->insert_undo_cached, + undo); + } + } else { + ut_ad(type == TRX_UNDO_UPDATE); + if (state != TRX_UNDO_CACHED) { + UT_LIST_ADD_LAST(undo_list, rseg->update_undo_list, + undo); + } else { + UT_LIST_ADD_LAST(undo_list, rseg->update_undo_cached, + undo); + } + } + + return(undo); +} + +/************************************************************************ +Initializes the undo log lists for a rollback segment memory copy. This +function is only called when the database is started or a new rollback +segment is created. */ +UNIV_INTERN +ulint +trx_undo_lists_init( +/*================*/ + /* out: the combined size of undo log segments + in pages */ + trx_rseg_t* rseg) /* in: rollback segment memory object */ +{ + ulint page_no; + trx_undo_t* undo; + ulint size = 0; + trx_rsegf_t* rseg_header; + ulint i; + mtr_t mtr; + + UT_LIST_INIT(rseg->update_undo_list); + UT_LIST_INIT(rseg->update_undo_cached); + UT_LIST_INIT(rseg->insert_undo_list); + UT_LIST_INIT(rseg->insert_undo_cached); + + mtr_start(&mtr); + + rseg_header = trx_rsegf_get_new(rseg->space, rseg->zip_size, + rseg->page_no, &mtr); + + if (!srv_extra_undoslots) { + /* uses direct call for avoid "Assertion failure" */ + //page_no = trx_rsegf_get_nth_undo(rseg_header, TRX_RSEG_N_EXTRA_SLOTS - 1, &mtr); + page_no = mtr_read_ulint(rseg_header + TRX_RSEG_UNDO_SLOTS + + (TRX_RSEG_N_EXTRA_SLOTS - 1) * TRX_RSEG_SLOT_SIZE, + MLOG_4BYTES, &mtr); + if (page_no != 0) { + /* check extended slots are not used */ + for (i = TRX_RSEG_N_SLOTS; i < TRX_RSEG_N_EXTRA_SLOTS; i++) { + /* uses direct call for avoid "Assertion failure" */ + page_no = mtr_read_ulint(rseg_header + TRX_RSEG_UNDO_SLOTS + + i * TRX_RSEG_SLOT_SIZE, + MLOG_4BYTES, &mtr); + if (page_no != FIL_NULL) { + srv_extra_undoslots = TRUE; + fprintf(stderr, +"InnoDB: Error: innodb_extra_undoslots option is disabled, but it was enabled before.\n" +"InnoDB: The datafile is not normal for mysqld and disabled innodb_extra_undoslots.\n" +"InnoDB: Enable innodb_extra_undoslots if it was enabled before, and\n" +"InnoDB: ### don't use this datafile with other mysqld or ibbackup! ###\n" +"InnoDB: Cannot continue operation for the safety. Calling exit(1).\n"); + exit(1); + } + } + fprintf(stderr, +"InnoDB: Warning: innodb_extra_undoslots option is disabled, but it was enabled before.\n" +"InnoDB: But extended undo slots seem not used, so continue operation.\n"); + } + } + + for (i = 0; i < TRX_RSEG_N_SLOTS; i++) { + page_no = trx_rsegf_get_nth_undo(rseg_header, i, &mtr); + + /* If it was not initialized when the datafile created, + page_no will be 0 for the extended slots after that */ + + if (page_no == 0) { + page_no = FIL_NULL; + trx_rsegf_set_nth_undo(rseg_header, i, page_no, &mtr); + } + + /* In forced recovery: try to avoid operations which look + at database pages; undo logs are rapidly changing data, and + the probability that they are in an inconsistent state is + high */ + + if (page_no != FIL_NULL + && srv_force_recovery < SRV_FORCE_NO_UNDO_LOG_SCAN) { + + undo = trx_undo_mem_create_at_db_start(rseg, i, + page_no, &mtr); + size += undo->size; + + mtr_commit(&mtr); + + mtr_start(&mtr); + + rseg_header = trx_rsegf_get( + rseg->space, rseg->zip_size, rseg->page_no, + &mtr); + } + } + + mtr_commit(&mtr); + + return(size); +} + +/************************************************************************ +Creates and initializes an undo log memory object. */ +static +trx_undo_t* +trx_undo_mem_create( +/*================*/ + /* out, own: the undo log memory object */ + trx_rseg_t* rseg, /* in: rollback segment memory object */ + ulint id, /* in: slot index within rseg */ + ulint type, /* in: type of the log: TRX_UNDO_INSERT or + TRX_UNDO_UPDATE */ + dulint trx_id, /* in: id of the trx for which the undo log + is created */ + const XID* xid, /* in: X/Open transaction identification */ + ulint page_no,/* in: undo log header page number */ + ulint offset) /* in: undo log header byte offset on page */ +{ + trx_undo_t* undo; + + ut_ad(mutex_own(&(rseg->mutex))); + + if (id >= TRX_RSEG_N_SLOTS) { + fprintf(stderr, + "InnoDB: Error: undo->id is %lu\n", (ulong) id); + ut_error; + } + + undo = mem_alloc(sizeof(trx_undo_t)); + + if (undo == NULL) { + + return NULL; + } + + undo->id = id; + undo->type = type; + undo->state = TRX_UNDO_ACTIVE; + undo->del_marks = FALSE; + undo->trx_id = trx_id; + undo->xid = *xid; + + undo->dict_operation = FALSE; + + undo->rseg = rseg; + + undo->space = rseg->space; + undo->zip_size = rseg->zip_size; + undo->hdr_page_no = page_no; + undo->hdr_offset = offset; + undo->last_page_no = page_no; + undo->size = 1; + + undo->empty = TRUE; + undo->top_page_no = page_no; + undo->guess_block = NULL; + + return(undo); +} + +/************************************************************************ +Initializes a cached undo log object for new use. */ +static +void +trx_undo_mem_init_for_reuse( +/*========================*/ + trx_undo_t* undo, /* in: undo log to init */ + dulint trx_id, /* in: id of the trx for which the undo log + is created */ + const XID* xid, /* in: X/Open XA transaction identification*/ + ulint offset) /* in: undo log header byte offset on page */ +{ + ut_ad(mutex_own(&((undo->rseg)->mutex))); + + if (UNIV_UNLIKELY(undo->id >= TRX_RSEG_N_SLOTS)) { + fprintf(stderr, "InnoDB: Error: undo->id is %lu\n", + (ulong) undo->id); + + mem_analyze_corruption(undo); + ut_error; + } + + undo->state = TRX_UNDO_ACTIVE; + undo->del_marks = FALSE; + undo->trx_id = trx_id; + undo->xid = *xid; + + undo->dict_operation = FALSE; + + undo->hdr_offset = offset; + undo->empty = TRUE; +} + +/************************************************************************ +Frees an undo log memory copy. */ +static +void +trx_undo_mem_free( +/*==============*/ + trx_undo_t* undo) /* in: the undo object to be freed */ +{ + if (undo->id >= TRX_RSEG_N_SLOTS) { + fprintf(stderr, + "InnoDB: Error: undo->id is %lu\n", (ulong) undo->id); + ut_error; + } + + mem_free(undo); +} + +/************************************************************************** +Creates a new undo log. */ +static +ulint +trx_undo_create( +/*============*/ + /* out: DB_SUCCESS if successful in creating + the new undo lob object, possible error + codes are: + DB_TOO_MANY_CONCURRENT_TRXS + DB_OUT_OF_FILE_SPACE + DB_OUT_OF_MEMORY*/ + trx_t* trx, /* in: transaction */ + trx_rseg_t* rseg, /* in: rollback segment memory copy */ + ulint type, /* in: type of the log: TRX_UNDO_INSERT or + TRX_UNDO_UPDATE */ + dulint trx_id, /* in: id of the trx for which the undo log + is created */ + const XID* xid, /* in: X/Open transaction identification*/ + trx_undo_t** undo, /* out: the new undo log object, undefined + * if did not succeed */ + mtr_t* mtr) /* in: mtr */ +{ + trx_rsegf_t* rseg_header; + ulint page_no; + ulint offset; + ulint id; + page_t* undo_page; + ulint err; + + ut_ad(mutex_own(&(rseg->mutex))); + + if (rseg->curr_size == rseg->max_size) { + + return(DB_OUT_OF_FILE_SPACE); + } + + rseg->curr_size++; + + rseg_header = trx_rsegf_get(rseg->space, rseg->zip_size, rseg->page_no, + mtr); + + err = trx_undo_seg_create(rseg, rseg_header, type, &id, + &undo_page, mtr); + + if (err != DB_SUCCESS) { + /* Did not succeed */ + + rseg->curr_size--; + + return(err); + } + + page_no = page_get_page_no(undo_page); + + offset = trx_undo_header_create(undo_page, trx_id, mtr); + + if (trx->support_xa) { + trx_undo_header_add_space_for_xid(undo_page, + undo_page + offset, mtr); + } + + *undo = trx_undo_mem_create(rseg, id, type, trx_id, xid, + page_no, offset); + if (*undo == NULL) { + + err = DB_OUT_OF_MEMORY; + } + + return(err); +} + +/*================ UNDO LOG ASSIGNMENT AND CLEANUP =====================*/ + +/************************************************************************ +Reuses a cached undo log. */ +static +trx_undo_t* +trx_undo_reuse_cached( +/*==================*/ + /* out: the undo log memory object, NULL if + none cached */ + trx_t* trx, /* in: transaction */ + trx_rseg_t* rseg, /* in: rollback segment memory object */ + ulint type, /* in: type of the log: TRX_UNDO_INSERT or + TRX_UNDO_UPDATE */ + dulint trx_id, /* in: id of the trx for which the undo log + is used */ + const XID* xid, /* in: X/Open XA transaction identification */ + mtr_t* mtr) /* in: mtr */ +{ + trx_undo_t* undo; + page_t* undo_page; + ulint offset; + + ut_ad(mutex_own(&(rseg->mutex))); + + if (type == TRX_UNDO_INSERT) { + + undo = UT_LIST_GET_FIRST(rseg->insert_undo_cached); + if (undo == NULL) { + + return(NULL); + } + + UT_LIST_REMOVE(undo_list, rseg->insert_undo_cached, undo); + } else { + ut_ad(type == TRX_UNDO_UPDATE); + + undo = UT_LIST_GET_FIRST(rseg->update_undo_cached); + if (undo == NULL) { + + return(NULL); + } + + UT_LIST_REMOVE(undo_list, rseg->update_undo_cached, undo); + } + + ut_ad(undo->size == 1); + + if (undo->id >= TRX_RSEG_N_SLOTS) { + fprintf(stderr, "InnoDB: Error: undo->id is %lu\n", + (ulong) undo->id); + mem_analyze_corruption(undo); + ut_error; + } + + undo_page = trx_undo_page_get(undo->space, undo->zip_size, + undo->hdr_page_no, mtr); + + if (type == TRX_UNDO_INSERT) { + offset = trx_undo_insert_header_reuse(undo_page, trx_id, mtr); + + if (trx->support_xa) { + trx_undo_header_add_space_for_xid( + undo_page, undo_page + offset, mtr); + } + } else { + ut_a(mach_read_from_2(undo_page + TRX_UNDO_PAGE_HDR + + TRX_UNDO_PAGE_TYPE) + == TRX_UNDO_UPDATE); + + offset = trx_undo_header_create(undo_page, trx_id, mtr); + + if (trx->support_xa) { + trx_undo_header_add_space_for_xid( + undo_page, undo_page + offset, mtr); + } + } + + trx_undo_mem_init_for_reuse(undo, trx_id, xid, offset); + + return(undo); +} + +/************************************************************************** +Marks an undo log header as a header of a data dictionary operation +transaction. */ +static +void +trx_undo_mark_as_dict_operation( +/*============================*/ + trx_t* trx, /* in: dict op transaction */ + trx_undo_t* undo, /* in: assigned undo log */ + mtr_t* mtr) /* in: mtr */ +{ + page_t* hdr_page; + + hdr_page = trx_undo_page_get(undo->space, undo->zip_size, + undo->hdr_page_no, mtr); + + switch (trx_get_dict_operation(trx)) { + case TRX_DICT_OP_NONE: + ut_error; + case TRX_DICT_OP_INDEX: + /* Do not discard the table on recovery. */ + undo->table_id = ut_dulint_zero; + break; + case TRX_DICT_OP_TABLE: + undo->table_id = trx->table_id; + break; + } + + mlog_write_ulint(hdr_page + undo->hdr_offset + + TRX_UNDO_DICT_TRANS, + TRUE, MLOG_1BYTE, mtr); + + mlog_write_dulint(hdr_page + undo->hdr_offset + TRX_UNDO_TABLE_ID, + undo->table_id, mtr); + + undo->dict_operation = TRUE; +} + +/************************************************************************** +Assigns an undo log for a transaction. A new undo log is created or a cached +undo log reused. */ +UNIV_INTERN +ulint +trx_undo_assign_undo( +/*=================*/ + /* out: DB_SUCCESS if undo log assign + successful, possible error codes are: + DB_TOO_MANY_CONCURRENT_TRXS + DB_OUT_OF_FILE_SPACE DB_OUT_OF_MEMORY*/ + trx_t* trx, /* in: transaction */ + ulint type) /* in: TRX_UNDO_INSERT or TRX_UNDO_UPDATE */ +{ + trx_rseg_t* rseg; + trx_undo_t* undo; + mtr_t mtr; + ulint err = DB_SUCCESS; + + ut_ad(trx); + ut_ad(trx->rseg); + + rseg = trx->rseg; + + ut_ad(mutex_own(&(trx->undo_mutex))); + + mtr_start(&mtr); + + ut_ad(!mutex_own(&kernel_mutex)); + + mutex_enter(&(rseg->mutex)); + + undo = trx_undo_reuse_cached(trx, rseg, type, trx->id, &trx->xid, + &mtr); + if (undo == NULL) { + err = trx_undo_create(trx, rseg, type, trx->id, &trx->xid, + &undo, &mtr); + if (err != DB_SUCCESS) { + + goto func_exit; + } + } + + if (type == TRX_UNDO_INSERT) { + UT_LIST_ADD_FIRST(undo_list, rseg->insert_undo_list, undo); + ut_ad(trx->insert_undo == NULL); + trx->insert_undo = undo; + } else { + UT_LIST_ADD_FIRST(undo_list, rseg->update_undo_list, undo); + ut_ad(trx->update_undo == NULL); + trx->update_undo = undo; + } + + if (trx_get_dict_operation(trx) != TRX_DICT_OP_NONE) { + trx_undo_mark_as_dict_operation(trx, undo, &mtr); + } + +func_exit: + mutex_exit(&(rseg->mutex)); + mtr_commit(&mtr); + + return err; +} + +/********************************************************************** +Sets the state of the undo log segment at a transaction finish. */ +UNIV_INTERN +page_t* +trx_undo_set_state_at_finish( +/*=========================*/ + /* out: undo log segment header page, + x-latched */ + trx_rseg_t* rseg, /* in: rollback segment memory object */ + trx_t* trx __attribute__((unused)), /* in: transaction */ + trx_undo_t* undo, /* in: undo log memory copy */ + mtr_t* mtr) /* in: mtr */ +{ + trx_usegf_t* seg_hdr; + trx_upagef_t* page_hdr; + page_t* undo_page; + ulint state; + + ut_ad(trx); + ut_ad(undo); + ut_ad(mtr); + ut_ad(mutex_own(&rseg->mutex)); + + if (undo->id >= TRX_RSEG_N_SLOTS) { + fprintf(stderr, "InnoDB: Error: undo->id is %lu\n", + (ulong) undo->id); + mem_analyze_corruption(undo); + ut_error; + } + + undo_page = trx_undo_page_get(undo->space, undo->zip_size, + undo->hdr_page_no, mtr); + + seg_hdr = undo_page + TRX_UNDO_SEG_HDR; + page_hdr = undo_page + TRX_UNDO_PAGE_HDR; + + if (undo->size == 1 + && mach_read_from_2(page_hdr + TRX_UNDO_PAGE_FREE) + < TRX_UNDO_PAGE_REUSE_LIMIT) { + + /* This is a heuristic to avoid the problem of all UNDO + slots ending up in one of the UNDO lists. Previously if + the server crashed with all the slots in one of the lists, + transactions that required the slots of a different type + would fail for lack of slots. */ + + if (UT_LIST_GET_LEN(rseg->update_undo_list) < 500 + && UT_LIST_GET_LEN(rseg->insert_undo_list) < 500) { + + state = TRX_UNDO_CACHED; + } else { + state = TRX_UNDO_TO_FREE; + } + + } else if (undo->type == TRX_UNDO_INSERT) { + + state = TRX_UNDO_TO_FREE; + } else { + state = TRX_UNDO_TO_PURGE; + } + + undo->state = state; + + mlog_write_ulint(seg_hdr + TRX_UNDO_STATE, state, MLOG_2BYTES, mtr); + + return(undo_page); +} + +/********************************************************************** +Sets the state of the undo log segment at a transaction prepare. */ +UNIV_INTERN +page_t* +trx_undo_set_state_at_prepare( +/*==========================*/ + /* out: undo log segment header page, + x-latched */ + trx_t* trx, /* in: transaction */ + trx_undo_t* undo, /* in: undo log memory copy */ + mtr_t* mtr) /* in: mtr */ +{ + trx_usegf_t* seg_hdr; + trx_upagef_t* page_hdr; + trx_ulogf_t* undo_header; + page_t* undo_page; + ulint offset; + + ut_ad(trx && undo && mtr); + + if (undo->id >= TRX_RSEG_N_SLOTS) { + fprintf(stderr, "InnoDB: Error: undo->id is %lu\n", + (ulong) undo->id); + mem_analyze_corruption(undo); + ut_error; + } + + undo_page = trx_undo_page_get(undo->space, undo->zip_size, + undo->hdr_page_no, mtr); + + seg_hdr = undo_page + TRX_UNDO_SEG_HDR; + page_hdr = undo_page + TRX_UNDO_PAGE_HDR; + + /*------------------------------*/ + undo->state = TRX_UNDO_PREPARED; + undo->xid = trx->xid; + /*------------------------------*/ + + mlog_write_ulint(seg_hdr + TRX_UNDO_STATE, undo->state, + MLOG_2BYTES, mtr); + + offset = mach_read_from_2(seg_hdr + TRX_UNDO_LAST_LOG); + undo_header = undo_page + offset; + + mlog_write_ulint(undo_header + TRX_UNDO_XID_EXISTS, + TRUE, MLOG_1BYTE, mtr); + + trx_undo_write_xid(undo_header, &undo->xid, mtr); + + return(undo_page); +} + +/************************************************************************** +Adds the update undo log header as the first in the history list, and +frees the memory object, or puts it to the list of cached update undo log +segments. */ +UNIV_INTERN +void +trx_undo_update_cleanup( +/*====================*/ + trx_t* trx, /* in: trx owning the update undo log */ + page_t* undo_page, /* in: update undo log header page, + x-latched */ + mtr_t* mtr) /* in: mtr */ +{ + trx_rseg_t* rseg; + trx_undo_t* undo; + + undo = trx->update_undo; + rseg = trx->rseg; + + ut_ad(mutex_own(&(rseg->mutex))); + + trx_purge_add_update_undo_to_history(trx, undo_page, mtr); + + UT_LIST_REMOVE(undo_list, rseg->update_undo_list, undo); + + trx->update_undo = NULL; + + if (undo->state == TRX_UNDO_CACHED) { + + UT_LIST_ADD_FIRST(undo_list, rseg->update_undo_cached, undo); + } else { + ut_ad(undo->state == TRX_UNDO_TO_PURGE); + + trx_undo_mem_free(undo); + } +} + +/********************************************************************** +Frees or caches an insert undo log after a transaction commit or rollback. +Knowledge of inserts is not needed after a commit or rollback, therefore +the data can be discarded. */ +UNIV_INTERN +void +trx_undo_insert_cleanup( +/*====================*/ + trx_t* trx) /* in: transaction handle */ +{ + trx_undo_t* undo; + trx_rseg_t* rseg; + + undo = trx->insert_undo; + ut_ad(undo); + + rseg = trx->rseg; + + mutex_enter(&(rseg->mutex)); + + UT_LIST_REMOVE(undo_list, rseg->insert_undo_list, undo); + trx->insert_undo = NULL; + + if (undo->state == TRX_UNDO_CACHED) { + + UT_LIST_ADD_FIRST(undo_list, rseg->insert_undo_cached, undo); + } else { + ut_ad(undo->state == TRX_UNDO_TO_FREE); + + /* Delete first the undo log segment in the file */ + + mutex_exit(&(rseg->mutex)); + + trx_undo_seg_free(undo); + + mutex_enter(&(rseg->mutex)); + + ut_ad(rseg->curr_size > undo->size); + + rseg->curr_size -= undo->size; + + trx_undo_mem_free(undo); + } + + mutex_exit(&(rseg->mutex)); +} === added directory 'storage/xtradb/usr' === added file 'storage/xtradb/usr/usr0sess.c' --- a/storage/xtradb/usr/usr0sess.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/usr/usr0sess.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,97 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/****************************************************** +Sessions + +Created 6/25/1996 Heikki Tuuri +*******************************************************/ + +#include "usr0sess.h" + +#ifdef UNIV_NONINL +#include "usr0sess.ic" +#endif + +#include "trx0trx.h" + +/************************************************************************* +Closes a session, freeing the memory occupied by it. */ +static +void +sess_close( +/*=======*/ + sess_t* sess); /* in, own: session object */ + +/************************************************************************* +Opens a session. */ +UNIV_INTERN +sess_t* +sess_open(void) +/*===========*/ + /* out, own: session object */ +{ + sess_t* sess; + + ut_ad(mutex_own(&kernel_mutex)); + + sess = mem_alloc(sizeof(sess_t)); + + sess->state = SESS_ACTIVE; + + sess->trx = trx_create(sess); + + UT_LIST_INIT(sess->graphs); + + return(sess); +} + +/************************************************************************* +Closes a session, freeing the memory occupied by it. */ +static +void +sess_close( +/*=======*/ + sess_t* sess) /* in, own: session object */ +{ + ut_ad(mutex_own(&kernel_mutex)); + ut_ad(sess->trx == NULL); + + mem_free(sess); +} + +/************************************************************************* +Closes a session, freeing the memory occupied by it, if it is in a state +where it should be closed. */ +UNIV_INTERN +ibool +sess_try_close( +/*===========*/ + /* out: TRUE if closed */ + sess_t* sess) /* in, own: session object */ +{ + ut_ad(mutex_own(&kernel_mutex)); + + if (UT_LIST_GET_LEN(sess->graphs) == 0) { + sess_close(sess); + + return(TRUE); + } + + return(FALSE); +} === added directory 'storage/xtradb/ut' === added file 'storage/xtradb/ut/ut0auxconf.c' --- a/storage/xtradb/ut/ut0auxconf.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/ut/ut0auxconf.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,13 @@ +#include <pthread.h> + +int +main(int argc, char** argv) +{ + pthread_t x1; + pthread_t x2; + pthread_t x3; + + __sync_bool_compare_and_swap(&x1, x2, x3); + + return(0); +} === added file 'storage/xtradb/ut/ut0byte.c' --- a/storage/xtradb/ut/ut0byte.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/ut/ut0byte.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,50 @@ +/***************************************************************************** + +Copyright (c) 1994, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/******************************************************************* +Byte utilities + +Created 5/11/1994 Heikki Tuuri +********************************************************************/ + +#include "ut0byte.h" + +#ifdef UNIV_NONINL +#include "ut0byte.ic" +#endif + +/* Zero value for a dulint */ +UNIV_INTERN const dulint ut_dulint_zero = {0, 0}; + +/* Maximum value for a dulint */ +UNIV_INTERN const dulint ut_dulint_max = {0xFFFFFFFFUL, 0xFFFFFFFFUL}; + +#ifdef notdefined /* unused code */ +#include "ut0sort.h" + +/**************************************************************** +Sort function for dulint arrays. */ +UNIV_INTERN +void +ut_dulint_sort(dulint* arr, dulint* aux_arr, ulint low, ulint high) +/*===============================================================*/ +{ + UT_SORT_FUNCTION_BODY(ut_dulint_sort, arr, aux_arr, low, high, + ut_dulint_cmp); +} +#endif /* notdefined */ === added file 'storage/xtradb/ut/ut0dbg.c' --- a/storage/xtradb/ut/ut0dbg.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/ut/ut0dbg.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,180 @@ +/***************************************************************************** + +Copyright (c) 1994, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/********************************************************************* +Debug utilities for Innobase. + +Created 1/30/1994 Heikki Tuuri +**********************************************************************/ + +#include "univ.i" +#include "ut0dbg.h" + +#if defined(__GNUC__) && (__GNUC__ > 2) +#else +/* This is used to eliminate compiler warnings */ +UNIV_INTERN ulint ut_dbg_zero = 0; +#endif + +#if defined(UNIV_SYNC_DEBUG) || !defined(UT_DBG_USE_ABORT) +/* If this is set to TRUE all threads will stop into the next assertion +and assert */ +UNIV_INTERN ibool ut_dbg_stop_threads = FALSE; +#endif +#ifdef __NETWARE__ +/* This is set to TRUE when on NetWare there happens an InnoDB +assertion failure or other fatal error condition that requires an +immediate shutdown. */ +UNIV_INTERN ibool panic_shutdown = FALSE; +#elif !defined(UT_DBG_USE_ABORT) +/* Null pointer used to generate memory trap */ +UNIV_INTERN ulint* ut_dbg_null_ptr = NULL; +#endif + +/***************************************************************** +Report a failed assertion. */ +UNIV_INTERN +void +ut_dbg_assertion_failed( +/*====================*/ + const char* expr, /* in: the failed assertion (optional) */ + const char* file, /* in: source file containing the assertion */ + ulint line) /* in: line number of the assertion */ +{ + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: Assertion failure in thread %lu" + " in file %s line %lu\n", + os_thread_pf(os_thread_get_curr_id()), file, line); + if (expr) { + fprintf(stderr, + "InnoDB: Failing assertion: %s\n", expr); + } + + fputs("InnoDB: We intentionally generate a memory trap.\n" + "InnoDB: Submit a detailed bug report" + " to http://bugs.mysql.com.\n" + "InnoDB: If you get repeated assertion failures" + " or crashes, even\n" + "InnoDB: immediately after the mysqld startup, there may be\n" + "InnoDB: corruption in the InnoDB tablespace. Please refer to\n" + "InnoDB: http://dev.mysql.com/doc/refman/5.1/en/" + "forcing-recovery.html\n" + "InnoDB: about forcing recovery.\n", stderr); +#if defined(UNIV_SYNC_DEBUG) || !defined(UT_DBG_USE_ABORT) + ut_dbg_stop_threads = TRUE; +#endif +} + +#ifdef __NETWARE__ +/***************************************************************** +Shut down MySQL/InnoDB after assertion failure. */ +UNIV_INTERN +void +ut_dbg_panic(void) +/*==============*/ +{ + if (!panic_shutdown) { + panic_shutdown = TRUE; + innobase_shutdown_for_mysql(); + } + exit(1); +} +#else /* __NETWARE__ */ +# if defined(UNIV_SYNC_DEBUG) || !defined(UT_DBG_USE_ABORT) +/***************************************************************** +Stop a thread after assertion failure. */ +UNIV_INTERN +void +ut_dbg_stop_thread( +/*===============*/ + const char* file, + ulint line) +{ + fprintf(stderr, "InnoDB: Thread %lu stopped in file %s line %lu\n", + os_thread_pf(os_thread_get_curr_id()), file, line); + os_thread_sleep(1000000000); +} +# endif +#endif /* __NETWARE__ */ + +#ifdef UNIV_COMPILE_TEST_FUNCS + +#include <sys/types.h> +#include <sys/time.h> +#include <sys/resource.h> + +#include <unistd.h> + +#ifndef timersub +#define timersub(a, b, r) \ + do { \ + (r)->tv_sec = (a)->tv_sec - (b)->tv_sec; \ + (r)->tv_usec = (a)->tv_usec - (b)->tv_usec; \ + if ((r)->tv_usec < 0) { \ + (r)->tv_sec--; \ + (r)->tv_usec += 1000000; \ + } \ + } while (0) +#endif /* timersub */ + +/*********************************************************************** +Resets a speedo (records the current time in it). */ +UNIV_INTERN +void +speedo_reset( +/*=========*/ + speedo_t* speedo) /* out: speedo */ +{ + gettimeofday(&speedo->tv, NULL); + + getrusage(RUSAGE_SELF, &speedo->ru); +} + +/*********************************************************************** +Shows the time elapsed and usage statistics since the last reset of a +speedo. */ +UNIV_INTERN +void +speedo_show( +/*========*/ + const speedo_t* speedo) /* in: speedo */ +{ + struct rusage ru_now; + struct timeval tv_now; + struct timeval tv_diff; + + getrusage(RUSAGE_SELF, &ru_now); + + gettimeofday(&tv_now, NULL); + +#define PRINT_TIMEVAL(prefix, tvp) \ + fprintf(stderr, "%s% 5ld.%06ld sec\n", \ + prefix, (tvp)->tv_sec, (tvp)->tv_usec) + + timersub(&tv_now, &speedo->tv, &tv_diff); + PRINT_TIMEVAL("real", &tv_diff); + + timersub(&ru_now.ru_utime, &speedo->ru.ru_utime, &tv_diff); + PRINT_TIMEVAL("user", &tv_diff); + + timersub(&ru_now.ru_stime, &speedo->ru.ru_stime, &tv_diff); + PRINT_TIMEVAL("sys ", &tv_diff); +} + +#endif /* UNIV_COMPILE_TEST_FUNCS */ === added file 'storage/xtradb/ut/ut0list.c' --- a/storage/xtradb/ut/ut0list.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/ut/ut0list.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,187 @@ +/***************************************************************************** + +Copyright (c) 2006, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +#include "ut0list.h" +#ifdef UNIV_NONINL +#include "ut0list.ic" +#endif + +/******************************************************************** +Create a new list. */ +UNIV_INTERN +ib_list_t* +ib_list_create(void) +/*=================*/ + /* out: list */ +{ + ib_list_t* list = mem_alloc(sizeof(ib_list_t)); + + list->first = NULL; + list->last = NULL; + list->is_heap_list = FALSE; + + return(list); +} + +/******************************************************************** +Create a new list using the given heap. ib_list_free MUST NOT BE CALLED for +lists created with this function. */ +UNIV_INTERN +ib_list_t* +ib_list_create_heap( +/*================*/ + /* out: list */ + mem_heap_t* heap) /* in: memory heap to use */ +{ + ib_list_t* list = mem_heap_alloc(heap, sizeof(ib_list_t)); + + list->first = NULL; + list->last = NULL; + list->is_heap_list = TRUE; + + return(list); +} + +/******************************************************************** +Free a list. */ +UNIV_INTERN +void +ib_list_free( +/*=========*/ + ib_list_t* list) /* in: list */ +{ + ut_a(!list->is_heap_list); + + /* We don't check that the list is empty because it's entirely valid + to e.g. have all the nodes allocated from a single heap that is then + freed after the list itself is freed. */ + + mem_free(list); +} + +/******************************************************************** +Add the data to the start of the list. */ +UNIV_INTERN +ib_list_node_t* +ib_list_add_first( +/*==============*/ + /* out: new list node*/ + ib_list_t* list, /* in: list */ + void* data, /* in: data */ + mem_heap_t* heap) /* in: memory heap to use */ +{ + return(ib_list_add_after(list, ib_list_get_first(list), data, heap)); +} + +/******************************************************************** +Add the data to the end of the list. */ +UNIV_INTERN +ib_list_node_t* +ib_list_add_last( +/*=============*/ + /* out: new list node*/ + ib_list_t* list, /* in: list */ + void* data, /* in: data */ + mem_heap_t* heap) /* in: memory heap to use */ +{ + return(ib_list_add_after(list, ib_list_get_last(list), data, heap)); +} + +/******************************************************************** +Add the data after the indicated node. */ +UNIV_INTERN +ib_list_node_t* +ib_list_add_after( +/*==============*/ + /* out: new list node*/ + ib_list_t* list, /* in: list */ + ib_list_node_t* prev_node, /* in: node preceding new node (can + be NULL) */ + void* data, /* in: data */ + mem_heap_t* heap) /* in: memory heap to use */ +{ + ib_list_node_t* node = mem_heap_alloc(heap, sizeof(ib_list_node_t)); + + node->data = data; + + if (!list->first) { + /* Empty list. */ + + ut_a(!prev_node); + + node->prev = NULL; + node->next = NULL; + + list->first = node; + list->last = node; + } else if (!prev_node) { + /* Start of list. */ + + node->prev = NULL; + node->next = list->first; + + list->first->prev = node; + + list->first = node; + } else { + /* Middle or end of list. */ + + node->prev = prev_node; + node->next = prev_node->next; + + prev_node->next = node; + + if (node->next) { + node->next->prev = node; + } else { + list->last = node; + } + } + + return(node); +} + +/******************************************************************** +Remove the node from the list. */ +UNIV_INTERN +void +ib_list_remove( +/*===========*/ + ib_list_t* list, /* in: list */ + ib_list_node_t* node) /* in: node to remove */ +{ + if (node->prev) { + node->prev->next = node->next; + } else { + /* First item in list. */ + + ut_ad(list->first == node); + + list->first = node->next; + } + + if (node->next) { + node->next->prev = node->prev; + } else { + /* Last item in list. */ + + ut_ad(list->last == node); + + list->last = node->prev; + } +} === added file 'storage/xtradb/ut/ut0mem.c' --- a/storage/xtradb/ut/ut0mem.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/ut/ut0mem.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,673 @@ +/***************************************************************************** + +Copyright (c) 1994, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/************************************************************************ +Memory primitives + +Created 5/11/1994 Heikki Tuuri +*************************************************************************/ + +#include "ut0mem.h" + +#ifdef UNIV_NONINL +#include "ut0mem.ic" +#endif + +#include "mem0mem.h" +#include "os0thread.h" +#include "srv0srv.h" + +#include <stdlib.h> + +/* This struct is placed first in every allocated memory block */ +typedef struct ut_mem_block_struct ut_mem_block_t; + +/* The total amount of memory currently allocated from the operating +system with os_mem_alloc_large() or malloc(). Does not count malloc() +if srv_use_sys_malloc is set. Protected by ut_list_mutex. */ +UNIV_INTERN ulint ut_total_allocated_memory = 0; + +/* Mutex protecting ut_total_allocated_memory and ut_mem_block_list */ +UNIV_INTERN os_fast_mutex_t ut_list_mutex; + +struct ut_mem_block_struct{ + UT_LIST_NODE_T(ut_mem_block_t) mem_block_list; + /* mem block list node */ + ulint size; /* size of allocated memory */ + ulint magic_n; +}; + +#define UT_MEM_MAGIC_N 1601650166 + +/* List of all memory blocks allocated from the operating system +with malloc. Protected by ut_list_mutex. */ +static UT_LIST_BASE_NODE_T(ut_mem_block_t) ut_mem_block_list; + +static ibool ut_mem_block_list_inited = FALSE; + +static ulint* ut_mem_null_ptr = NULL; + +/************************************************************************** +Initializes the mem block list at database startup. */ +UNIV_INTERN +void +ut_mem_init(void) +/*=============*/ +{ + ut_a(!ut_mem_block_list_inited); + os_fast_mutex_init(&ut_list_mutex); + UT_LIST_INIT(ut_mem_block_list); + ut_mem_block_list_inited = TRUE; +} + +/************************************************************************** +Allocates memory. Sets it also to zero if UNIV_SET_MEM_TO_ZERO is +defined and set_to_zero is TRUE. */ +UNIV_INTERN +void* +ut_malloc_low( +/*==========*/ + /* out, own: allocated memory */ + ulint n, /* in: number of bytes to allocate */ + ibool set_to_zero, /* in: TRUE if allocated memory should be + set to zero if UNIV_SET_MEM_TO_ZERO is + defined */ + ibool assert_on_error)/* in: if TRUE, we crash mysqld if the + memory cannot be allocated */ +{ + ulint retry_count; + void* ret; + + if (UNIV_LIKELY(srv_use_sys_malloc)) { + ret = malloc(n); + ut_a(ret || !assert_on_error); + +#ifdef UNIV_SET_MEM_TO_ZERO + if (set_to_zero) { + memset(ret, '\0', n); + UNIV_MEM_ALLOC(ret, n); + } +#endif + return(ret); + } + + ut_ad((sizeof(ut_mem_block_t) % 8) == 0); /* check alignment ok */ + ut_a(ut_mem_block_list_inited); + + retry_count = 0; +retry: + os_fast_mutex_lock(&ut_list_mutex); + + ret = malloc(n + sizeof(ut_mem_block_t)); + + if (ret == NULL && retry_count < 60) { + if (retry_count == 0) { + ut_print_timestamp(stderr); + + fprintf(stderr, + " InnoDB: Error: cannot allocate" + " %lu bytes of\n" + "InnoDB: memory with malloc!" + " Total allocated memory\n" + "InnoDB: by InnoDB %lu bytes." + " Operating system errno: %lu\n" + "InnoDB: Check if you should" + " increase the swap file or\n" + "InnoDB: ulimits of your operating system.\n" + "InnoDB: On FreeBSD check you" + " have compiled the OS with\n" + "InnoDB: a big enough maximum process size.\n" + "InnoDB: Note that in most 32-bit" + " computers the process\n" + "InnoDB: memory space is limited" + " to 2 GB or 4 GB.\n" + "InnoDB: We keep retrying" + " the allocation for 60 seconds...\n", + (ulong) n, (ulong) ut_total_allocated_memory, +#ifdef __WIN__ + (ulong) GetLastError() +#else + (ulong) errno +#endif + ); + } + + os_fast_mutex_unlock(&ut_list_mutex); + + /* Sleep for a second and retry the allocation; maybe this is + just a temporary shortage of memory */ + + os_thread_sleep(1000000); + + retry_count++; + + goto retry; + } + + if (ret == NULL) { + /* Flush stderr to make more probable that the error + message gets in the error file before we generate a seg + fault */ + + fflush(stderr); + + os_fast_mutex_unlock(&ut_list_mutex); + + /* Make an intentional seg fault so that we get a stack + trace */ + /* Intentional segfault on NetWare causes an abend. Avoid this + by graceful exit handling in ut_a(). */ +#if (!defined __NETWARE__) + if (assert_on_error) { + ut_print_timestamp(stderr); + + fprintf(stderr, + " InnoDB: We now intentionally" + " generate a seg fault so that\n" + "InnoDB: on Linux we get a stack trace.\n"); + + if (*ut_mem_null_ptr) ut_mem_null_ptr = 0; + } else { + return(NULL); + } +#else + ut_a(0); +#endif + } + + if (set_to_zero) { +#ifdef UNIV_SET_MEM_TO_ZERO + memset(ret, '\0', n + sizeof(ut_mem_block_t)); +#endif + } + + UNIV_MEM_ALLOC(ret, n + sizeof(ut_mem_block_t)); + + ((ut_mem_block_t*)ret)->size = n + sizeof(ut_mem_block_t); + ((ut_mem_block_t*)ret)->magic_n = UT_MEM_MAGIC_N; + + ut_total_allocated_memory += n + sizeof(ut_mem_block_t); + + UT_LIST_ADD_FIRST(mem_block_list, ut_mem_block_list, + ((ut_mem_block_t*)ret)); + os_fast_mutex_unlock(&ut_list_mutex); + + return((void*)((byte*)ret + sizeof(ut_mem_block_t))); +} + +/************************************************************************** +Allocates memory. Sets it also to zero if UNIV_SET_MEM_TO_ZERO is +defined. */ +UNIV_INTERN +void* +ut_malloc( +/*======*/ + /* out, own: allocated memory */ + ulint n) /* in: number of bytes to allocate */ +{ + return(ut_malloc_low(n, TRUE, TRUE)); +} + +/************************************************************************** +Tests if malloc of n bytes would succeed. ut_malloc() asserts if memory runs +out. It cannot be used if we want to return an error message. Prints to +stderr a message if fails. */ +UNIV_INTERN +ibool +ut_test_malloc( +/*===========*/ + /* out: TRUE if succeeded */ + ulint n) /* in: try to allocate this many bytes */ +{ + void* ret; + + ret = malloc(n); + + if (ret == NULL) { + ut_print_timestamp(stderr); + fprintf(stderr, + " InnoDB: Error: cannot allocate" + " %lu bytes of memory for\n" + "InnoDB: a BLOB with malloc! Total allocated memory\n" + "InnoDB: by InnoDB %lu bytes." + " Operating system errno: %d\n" + "InnoDB: Check if you should increase" + " the swap file or\n" + "InnoDB: ulimits of your operating system.\n" + "InnoDB: On FreeBSD check you have" + " compiled the OS with\n" + "InnoDB: a big enough maximum process size.\n", + (ulong) n, + (ulong) ut_total_allocated_memory, + (int) errno); + return(FALSE); + } + + free(ret); + + return(TRUE); +} + +/************************************************************************** +Frees a memory block allocated with ut_malloc. */ +UNIV_INTERN +void +ut_free( +/*====*/ + void* ptr) /* in, own: memory block */ +{ + ut_mem_block_t* block; + + if (UNIV_LIKELY(srv_use_sys_malloc)) { + free(ptr); + return; + } + + block = (ut_mem_block_t*)((byte*)ptr - sizeof(ut_mem_block_t)); + + os_fast_mutex_lock(&ut_list_mutex); + + ut_a(block->magic_n == UT_MEM_MAGIC_N); + ut_a(ut_total_allocated_memory >= block->size); + + ut_total_allocated_memory -= block->size; + + UT_LIST_REMOVE(mem_block_list, ut_mem_block_list, block); + free(block); + + os_fast_mutex_unlock(&ut_list_mutex); +} + +/************************************************************************** +Implements realloc. This is needed by /pars/lexyy.c. Otherwise, you should not +use this function because the allocation functions in mem0mem.h are the +recommended ones in InnoDB. + +man realloc in Linux, 2004: + + realloc() changes the size of the memory block pointed to + by ptr to size bytes. The contents will be unchanged to + the minimum of the old and new sizes; newly allocated mem� + ory will be uninitialized. If ptr is NULL, the call is + equivalent to malloc(size); if size is equal to zero, the + call is equivalent to free(ptr). Unless ptr is NULL, it + must have been returned by an earlier call to malloc(), + calloc() or realloc(). + +RETURN VALUE + realloc() returns a pointer to the newly allocated memory, + which is suitably aligned for any kind of variable and may + be different from ptr, or NULL if the request fails. If + size was equal to 0, either NULL or a pointer suitable to + be passed to free() is returned. If realloc() fails the + original block is left untouched - it is not freed or + moved. */ +UNIV_INTERN +void* +ut_realloc( +/*=======*/ + /* out, own: pointer to new mem block or NULL */ + void* ptr, /* in: pointer to old block or NULL */ + ulint size) /* in: desired size */ +{ + ut_mem_block_t* block; + ulint old_size; + ulint min_size; + void* new_ptr; + + if (UNIV_LIKELY(srv_use_sys_malloc)) { + return(realloc(ptr, size)); + } + + if (ptr == NULL) { + + return(ut_malloc(size)); + } + + if (size == 0) { + ut_free(ptr); + + return(NULL); + } + + block = (ut_mem_block_t*)((byte*)ptr - sizeof(ut_mem_block_t)); + + ut_a(block->magic_n == UT_MEM_MAGIC_N); + + old_size = block->size - sizeof(ut_mem_block_t); + + if (size < old_size) { + min_size = size; + } else { + min_size = old_size; + } + + new_ptr = ut_malloc(size); + + if (new_ptr == NULL) { + + return(NULL); + } + + /* Copy the old data from ptr */ + ut_memcpy(new_ptr, ptr, min_size); + + ut_free(ptr); + + return(new_ptr); +} + +/************************************************************************** +Frees in shutdown all allocated memory not freed yet. */ +UNIV_INTERN +void +ut_free_all_mem(void) +/*=================*/ +{ + ut_mem_block_t* block; + + ut_a(ut_mem_block_list_inited); + ut_mem_block_list_inited = FALSE; + os_fast_mutex_free(&ut_list_mutex); + + while ((block = UT_LIST_GET_FIRST(ut_mem_block_list))) { + + ut_a(block->magic_n == UT_MEM_MAGIC_N); + ut_a(ut_total_allocated_memory >= block->size); + + ut_total_allocated_memory -= block->size; + + UT_LIST_REMOVE(mem_block_list, ut_mem_block_list, block); + free(block); + } + + if (ut_total_allocated_memory != 0) { + fprintf(stderr, + "InnoDB: Warning: after shutdown" + " total allocated memory is %lu\n", + (ulong) ut_total_allocated_memory); + } +} + +/************************************************************************** +Copies up to size - 1 characters from the NUL-terminated string src to +dst, NUL-terminating the result. Returns strlen(src), so truncation +occurred if the return value >= size. */ +UNIV_INTERN +ulint +ut_strlcpy( +/*=======*/ + /* out: strlen(src) */ + char* dst, /* in: destination buffer */ + const char* src, /* in: source buffer */ + ulint size) /* in: size of destination buffer */ +{ + ulint src_size = strlen(src); + + if (size != 0) { + ulint n = ut_min(src_size, size - 1); + + memcpy(dst, src, n); + dst[n] = '\0'; + } + + return(src_size); +} + +/************************************************************************** +Like ut_strlcpy, but if src doesn't fit in dst completely, copies the last +(size - 1) bytes of src, not the first. */ +UNIV_INTERN +ulint +ut_strlcpy_rev( +/*===========*/ + /* out: strlen(src) */ + char* dst, /* in: destination buffer */ + const char* src, /* in: source buffer */ + ulint size) /* in: size of destination buffer */ +{ + ulint src_size = strlen(src); + + if (size != 0) { + ulint n = ut_min(src_size, size - 1); + + memcpy(dst, src + src_size - n, n + 1); + } + + return(src_size); +} + +/************************************************************************** +Make a quoted copy of a NUL-terminated string. Leading and trailing +quotes will not be included; only embedded quotes will be escaped. +See also ut_strlenq() and ut_memcpyq(). */ +UNIV_INTERN +char* +ut_strcpyq( +/*=======*/ + /* out: pointer to end of dest */ + char* dest, /* in: output buffer */ + char q, /* in: the quote character */ + const char* src) /* in: null-terminated string */ +{ + while (*src) { + if ((*dest++ = *src++) == q) { + *dest++ = q; + } + } + + return(dest); +} + +/************************************************************************** +Make a quoted copy of a fixed-length string. Leading and trailing +quotes will not be included; only embedded quotes will be escaped. +See also ut_strlenq() and ut_strcpyq(). */ +UNIV_INTERN +char* +ut_memcpyq( +/*=======*/ + /* out: pointer to end of dest */ + char* dest, /* in: output buffer */ + char q, /* in: the quote character */ + const char* src, /* in: string to be quoted */ + ulint len) /* in: length of src */ +{ + const char* srcend = src + len; + + while (src < srcend) { + if ((*dest++ = *src++) == q) { + *dest++ = q; + } + } + + return(dest); +} + +/************************************************************************** +Return the number of times s2 occurs in s1. Overlapping instances of s2 +are only counted once. */ +UNIV_INTERN +ulint +ut_strcount( +/*========*/ + /* out: the number of times s2 occurs in s1 */ + const char* s1, /* in: string to search in */ + const char* s2) /* in: string to search for */ +{ + ulint count = 0; + ulint len = strlen(s2); + + if (len == 0) { + + return(0); + } + + for (;;) { + s1 = strstr(s1, s2); + + if (!s1) { + + break; + } + + count++; + s1 += len; + } + + return(count); +} + +/************************************************************************** +Replace every occurrence of s1 in str with s2. Overlapping instances of s1 +are only replaced once. */ +UNIV_INTERN +char* +ut_strreplace( +/*==========*/ + /* out, own: modified string, must be + freed with mem_free() */ + const char* str, /* in: string to operate on */ + const char* s1, /* in: string to replace */ + const char* s2) /* in: string to replace s1 with */ +{ + char* new_str; + char* ptr; + const char* str_end; + ulint str_len = strlen(str); + ulint s1_len = strlen(s1); + ulint s2_len = strlen(s2); + ulint count = 0; + int len_delta = (int)s2_len - (int)s1_len; + + str_end = str + str_len; + + if (len_delta <= 0) { + len_delta = 0; + } else { + count = ut_strcount(str, s1); + } + + new_str = mem_alloc(str_len + count * len_delta + 1); + ptr = new_str; + + while (str) { + const char* next = strstr(str, s1); + + if (!next) { + next = str_end; + } + + memcpy(ptr, str, next - str); + ptr += next - str; + + if (next == str_end) { + + break; + } + + memcpy(ptr, s2, s2_len); + ptr += s2_len; + + str = next + s1_len; + } + + *ptr = '\0'; + + return(new_str); +} + +#ifdef UNIV_COMPILE_TEST_FUNCS + +void +test_ut_str_sql_format() +{ + char buf[128]; + ulint ret; + +#define CALL_AND_TEST(str, str_len, buf, buf_size, ret_expected, buf_expected)\ + do {\ + ibool ok = TRUE;\ + memset(buf, 'x', 10);\ + buf[10] = '\0';\ + fprintf(stderr, "TESTING \"%s\", %lu, %lu\n",\ + str, (ulint) str_len, (ulint) buf_size);\ + ret = ut_str_sql_format(str, str_len, buf, buf_size);\ + if (ret != ret_expected) {\ + fprintf(stderr, "expected ret %lu, got %lu\n",\ + (ulint) ret_expected, ret);\ + ok = FALSE;\ + }\ + if (strcmp((char*) buf, buf_expected) != 0) {\ + fprintf(stderr, "expected buf \"%s\", got \"%s\"\n",\ + buf_expected, buf);\ + ok = FALSE;\ + }\ + if (ok) {\ + fprintf(stderr, "OK: %lu, \"%s\"\n\n",\ + (ulint) ret, buf);\ + } else {\ + return;\ + }\ + } while (0) + + CALL_AND_TEST("abcd", 4, buf, 0, 0, "xxxxxxxxxx"); + + CALL_AND_TEST("abcd", 4, buf, 1, 1, ""); + + CALL_AND_TEST("abcd", 4, buf, 2, 1, ""); + + CALL_AND_TEST("abcd", 0, buf, 3, 3, "''"); + CALL_AND_TEST("abcd", 1, buf, 3, 1, ""); + CALL_AND_TEST("abcd", 2, buf, 3, 1, ""); + CALL_AND_TEST("abcd", 3, buf, 3, 1, ""); + CALL_AND_TEST("abcd", 4, buf, 3, 1, ""); + + CALL_AND_TEST("abcd", 0, buf, 4, 3, "''"); + CALL_AND_TEST("abcd", 1, buf, 4, 4, "'a'"); + CALL_AND_TEST("abcd", 2, buf, 4, 4, "'a'"); + CALL_AND_TEST("abcd", 3, buf, 4, 4, "'a'"); + CALL_AND_TEST("abcd", 4, buf, 4, 4, "'a'"); + CALL_AND_TEST("abcde", 5, buf, 4, 4, "'a'"); + CALL_AND_TEST("'", 1, buf, 4, 3, "''"); + CALL_AND_TEST("''", 2, buf, 4, 3, "''"); + CALL_AND_TEST("a'", 2, buf, 4, 4, "'a'"); + CALL_AND_TEST("'a", 2, buf, 4, 3, "''"); + CALL_AND_TEST("ab", 2, buf, 4, 4, "'a'"); + + CALL_AND_TEST("abcdef", 0, buf, 5, 3, "''"); + CALL_AND_TEST("abcdef", 1, buf, 5, 4, "'a'"); + CALL_AND_TEST("abcdef", 2, buf, 5, 5, "'ab'"); + CALL_AND_TEST("abcdef", 3, buf, 5, 5, "'ab'"); + CALL_AND_TEST("abcdef", 4, buf, 5, 5, "'ab'"); + CALL_AND_TEST("abcdef", 5, buf, 5, 5, "'ab'"); + CALL_AND_TEST("abcdef", 6, buf, 5, 5, "'ab'"); + CALL_AND_TEST("'", 1, buf, 5, 5, "''''"); + CALL_AND_TEST("''", 2, buf, 5, 5, "''''"); + CALL_AND_TEST("a'", 2, buf, 5, 4, "'a'"); + CALL_AND_TEST("'a", 2, buf, 5, 5, "''''"); + CALL_AND_TEST("ab", 2, buf, 5, 5, "'ab'"); + CALL_AND_TEST("abc", 3, buf, 5, 5, "'ab'"); + + CALL_AND_TEST("ab", 2, buf, 6, 5, "'ab'"); + + CALL_AND_TEST("a'b'c", 5, buf, 32, 10, "'a''b''c'"); + CALL_AND_TEST("a'b'c'", 6, buf, 32, 12, "'a''b''c'''"); +} + +#endif /* UNIV_COMPILE_TEST_FUNCS */ === added file 'storage/xtradb/ut/ut0rnd.c' --- a/storage/xtradb/ut/ut0rnd.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/ut/ut0rnd.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,94 @@ +/***************************************************************************** + +Copyright (c) 1994, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/******************************************************************* +Random numbers and hashing + +Created 5/11/1994 Heikki Tuuri +********************************************************************/ + +#include "ut0rnd.h" + +#ifdef UNIV_NONINL +#include "ut0rnd.ic" +#endif + +/* These random numbers are used in ut_find_prime */ +#define UT_RANDOM_1 1.0412321 +#define UT_RANDOM_2 1.1131347 +#define UT_RANDOM_3 1.0132677 + + +UNIV_INTERN ulint ut_rnd_ulint_counter = 65654363; + +/*************************************************************** +Looks for a prime number slightly greater than the given argument. +The prime is chosen so that it is not near any power of 2. */ +UNIV_INTERN +ulint +ut_find_prime( +/*==========*/ + /* out: prime */ + ulint n) /* in: positive number > 100 */ +{ + ulint pow2; + ulint i; + + n += 100; + + pow2 = 1; + while (pow2 * 2 < n) { + pow2 = 2 * pow2; + } + + if ((double)n < 1.05 * (double)pow2) { + n = (ulint) ((double)n * UT_RANDOM_1); + } + + pow2 = 2 * pow2; + + if ((double)n > 0.95 * (double)pow2) { + n = (ulint) ((double)n * UT_RANDOM_2); + } + + if (n > pow2 - 20) { + n += 30; + } + + /* Now we have n far enough from powers of 2. To make + n more random (especially, if it was not near + a power of 2), we then multiply it by a random number. */ + + n = (ulint) ((double)n * UT_RANDOM_3); + + for (;; n++) { + i = 2; + while (i * i <= n) { + if (n % i == 0) { + goto next_n; + } + i++; + } + + /* Found a prime */ + break; +next_n: ; + } + + return(n); +} === added file 'storage/xtradb/ut/ut0ut.c' --- a/storage/xtradb/ut/ut0ut.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/ut/ut0ut.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,594 @@ +/***************************************************************************** + +Copyright (c) 1994, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +/******************************************************************* +Various utilities for Innobase. + +Created 5/11/1994 Heikki Tuuri +********************************************************************/ + +#include "ut0ut.h" + +#ifdef UNIV_NONINL +#include "ut0ut.ic" +#endif + +#include <stdarg.h> +#include <string.h> +#include <ctype.h> + +#include "trx0trx.h" +#include "ha_prototypes.h" +#ifndef UNIV_HOTBACKUP +# include "mysql_com.h" /* NAME_LEN */ +#endif /* UNIV_HOTBACKUP */ + +UNIV_INTERN ibool ut_always_false = FALSE; + +#ifdef __WIN__ +/********************************************************************* +NOTE: The Windows epoch starts from 1601/01/01 whereas the Unix +epoch starts from 1970/1/1. For selection of constant see: +http://support.microsoft.com/kb/167296/ */ +#define WIN_TO_UNIX_DELTA_USEC ((ib_int64_t) 11644473600000000ULL) + + +/********************************************************************* +This is the Windows version of gettimeofday(2).*/ +static +int +ut_gettimeofday( +/*============*/ + /* out: 0 if all OK else -1 */ + struct timeval* tv, /* out: Values are relative to Unix epoch */ + void* tz) /* in: not used */ +{ + FILETIME ft; + ib_int64_t tm; + + if (!tv) { + errno = EINVAL; + return(-1); + } + + GetSystemTimeAsFileTime(&ft); + + tm = (ib_int64_t) ft.dwHighDateTime << 32; + tm |= ft.dwLowDateTime; + + ut_a(tm >= 0); /* If tm wraps over to negative, the quotient / 10 + does not work */ + + tm /= 10; /* Convert from 100 nsec periods to usec */ + + /* If we don't convert to the Unix epoch the value for + struct timeval::tv_sec will overflow.*/ + tm -= WIN_TO_UNIX_DELTA_USEC; + + tv->tv_sec = (long) (tm / 1000000L); + tv->tv_usec = (long) (tm % 1000000L); + + return(0); +} +#else +#define ut_gettimeofday gettimeofday +#endif + +/************************************************************ +Gets the high 32 bits in a ulint. That is makes a shift >> 32, +but since there seem to be compiler bugs in both gcc and Visual C++, +we do this by a special conversion. */ +UNIV_INTERN +ulint +ut_get_high32( +/*==========*/ + /* out: a >> 32 */ + ulint a) /* in: ulint */ +{ + ib_int64_t i; + + i = (ib_int64_t)a; + + i = i >> 32; + + return((ulint)i); +} + +/************************************************************** +Returns system time. We do not specify the format of the time returned: +the only way to manipulate it is to use the function ut_difftime. */ +UNIV_INTERN +ib_time_t +ut_time(void) +/*=========*/ +{ + return(time(NULL)); +} + +/************************************************************** +Returns system time. +Upon successful completion, the value 0 is returned; otherwise the +value -1 is returned and the global variable errno is set to indicate the +error. */ +UNIV_INTERN +int +ut_usectime( +/*========*/ + /* out: 0 on success, -1 otherwise */ + ulint* sec, /* out: seconds since the Epoch */ + ulint* ms) /* out: microseconds since the Epoch+*sec */ +{ + struct timeval tv; + int ret; + int errno_gettimeofday; + int i; + + for (i = 0; i < 10; i++) { + + ret = ut_gettimeofday(&tv, NULL); + + if (ret == -1) { + errno_gettimeofday = errno; + ut_print_timestamp(stderr); + fprintf(stderr, " InnoDB: gettimeofday(): %s\n", + strerror(errno_gettimeofday)); + os_thread_sleep(100000); /* 0.1 sec */ + errno = errno_gettimeofday; + } else { + break; + } + } + + if (ret != -1) { + *sec = (ulint) tv.tv_sec; + *ms = (ulint) tv.tv_usec; + } + + return(ret); +} + +/************************************************************** +Returns the number of microseconds since epoch. Similar to +time(3), the return value is also stored in *tloc, provided +that tloc is non-NULL. */ +UNIV_INTERN +ullint +ut_time_us( +/*=======*/ + /* out: us since epoch */ + ullint* tloc) /* out: us since epoch, if non-NULL */ +{ + struct timeval tv; + ullint us; + + ut_gettimeofday(&tv, NULL); + + us = (ullint) tv.tv_sec * 1000000 + tv.tv_usec; + + if (tloc != NULL) { + *tloc = us; + } + + return(us); +} + +/************************************************************** +Returns the difference of two times in seconds. */ +UNIV_INTERN +double +ut_difftime( +/*========*/ + /* out: time2 - time1 expressed in seconds */ + ib_time_t time2, /* in: time */ + ib_time_t time1) /* in: time */ +{ + return(difftime(time2, time1)); +} + +/************************************************************** +Prints a timestamp to a file. */ +UNIV_INTERN +void +ut_print_timestamp( +/*===============*/ + FILE* file) /* in: file where to print */ +{ +#ifdef __WIN__ + SYSTEMTIME cal_tm; + + GetLocalTime(&cal_tm); + + fprintf(file,"%02d%02d%02d %2d:%02d:%02d", + (int)cal_tm.wYear % 100, + (int)cal_tm.wMonth, + (int)cal_tm.wDay, + (int)cal_tm.wHour, + (int)cal_tm.wMinute, + (int)cal_tm.wSecond); +#else + struct tm cal_tm; + struct tm* cal_tm_ptr; + time_t tm; + + time(&tm); + +#ifdef HAVE_LOCALTIME_R + localtime_r(&tm, &cal_tm); + cal_tm_ptr = &cal_tm; +#else + cal_tm_ptr = localtime(&tm); +#endif + fprintf(file,"%02d%02d%02d %2d:%02d:%02d", + cal_tm_ptr->tm_year % 100, + cal_tm_ptr->tm_mon + 1, + cal_tm_ptr->tm_mday, + cal_tm_ptr->tm_hour, + cal_tm_ptr->tm_min, + cal_tm_ptr->tm_sec); +#endif +} + +/************************************************************** +Sprintfs a timestamp to a buffer, 13..14 chars plus terminating NUL. */ +UNIV_INTERN +void +ut_sprintf_timestamp( +/*=================*/ + char* buf) /* in: buffer where to sprintf */ +{ +#ifdef __WIN__ + SYSTEMTIME cal_tm; + + GetLocalTime(&cal_tm); + + sprintf(buf, "%02d%02d%02d %2d:%02d:%02d", + (int)cal_tm.wYear % 100, + (int)cal_tm.wMonth, + (int)cal_tm.wDay, + (int)cal_tm.wHour, + (int)cal_tm.wMinute, + (int)cal_tm.wSecond); +#else + struct tm cal_tm; + struct tm* cal_tm_ptr; + time_t tm; + + time(&tm); + +#ifdef HAVE_LOCALTIME_R + localtime_r(&tm, &cal_tm); + cal_tm_ptr = &cal_tm; +#else + cal_tm_ptr = localtime(&tm); +#endif + sprintf(buf, "%02d%02d%02d %2d:%02d:%02d", + cal_tm_ptr->tm_year % 100, + cal_tm_ptr->tm_mon + 1, + cal_tm_ptr->tm_mday, + cal_tm_ptr->tm_hour, + cal_tm_ptr->tm_min, + cal_tm_ptr->tm_sec); +#endif +} + +#ifdef UNIV_HOTBACKUP +/************************************************************** +Sprintfs a timestamp to a buffer with no spaces and with ':' characters +replaced by '_'. */ +UNIV_INTERN +void +ut_sprintf_timestamp_without_extra_chars( +/*=====================================*/ + char* buf) /* in: buffer where to sprintf */ +{ +#ifdef __WIN__ + SYSTEMTIME cal_tm; + + GetLocalTime(&cal_tm); + + sprintf(buf, "%02d%02d%02d_%2d_%02d_%02d", + (int)cal_tm.wYear % 100, + (int)cal_tm.wMonth, + (int)cal_tm.wDay, + (int)cal_tm.wHour, + (int)cal_tm.wMinute, + (int)cal_tm.wSecond); +#else + struct tm cal_tm; + struct tm* cal_tm_ptr; + time_t tm; + + time(&tm); + +#ifdef HAVE_LOCALTIME_R + localtime_r(&tm, &cal_tm); + cal_tm_ptr = &cal_tm; +#else + cal_tm_ptr = localtime(&tm); +#endif + sprintf(buf, "%02d%02d%02d_%2d_%02d_%02d", + cal_tm_ptr->tm_year % 100, + cal_tm_ptr->tm_mon + 1, + cal_tm_ptr->tm_mday, + cal_tm_ptr->tm_hour, + cal_tm_ptr->tm_min, + cal_tm_ptr->tm_sec); +#endif +} + +/************************************************************** +Returns current year, month, day. */ +UNIV_INTERN +void +ut_get_year_month_day( +/*==================*/ + ulint* year, /* out: current year */ + ulint* month, /* out: month */ + ulint* day) /* out: day */ +{ +#ifdef __WIN__ + SYSTEMTIME cal_tm; + + GetLocalTime(&cal_tm); + + *year = (ulint)cal_tm.wYear; + *month = (ulint)cal_tm.wMonth; + *day = (ulint)cal_tm.wDay; +#else + struct tm cal_tm; + struct tm* cal_tm_ptr; + time_t tm; + + time(&tm); + +#ifdef HAVE_LOCALTIME_R + localtime_r(&tm, &cal_tm); + cal_tm_ptr = &cal_tm; +#else + cal_tm_ptr = localtime(&tm); +#endif + *year = (ulint)cal_tm_ptr->tm_year + 1900; + *month = (ulint)cal_tm_ptr->tm_mon + 1; + *day = (ulint)cal_tm_ptr->tm_mday; +#endif +} +#endif /* UNIV_HOTBACKUP */ + +/***************************************************************** +Runs an idle loop on CPU. The argument gives the desired delay +in microseconds on 100 MHz Pentium + Visual C++. */ +UNIV_INTERN +ulint +ut_delay( +/*=====*/ + /* out: dummy value */ + ulint delay) /* in: delay in microseconds on 100 MHz Pentium */ +{ + ulint i, j; + + j = 0; + + for (i = 0; i < delay * 50; i++) { + j += i; + } + + if (ut_always_false) { + ut_always_false = (ibool) j; + } + + return(j); +} + +/***************************************************************** +Prints the contents of a memory buffer in hex and ascii. */ +UNIV_INTERN +void +ut_print_buf( +/*=========*/ + FILE* file, /* in: file where to print */ + const void* buf, /* in: memory buffer */ + ulint len) /* in: length of the buffer */ +{ + const byte* data; + ulint i; + + UNIV_MEM_ASSERT_RW(buf, len); + + fprintf(file, " len %lu; hex ", len); + + for (data = (const byte*)buf, i = 0; i < len; i++) { + fprintf(file, "%02lx", (ulong)*data++); + } + + fputs("; asc ", file); + + data = (const byte*)buf; + + for (i = 0; i < len; i++) { + int c = (int) *data++; + putc(isprint(c) ? c : ' ', file); + } + + putc(';', file); +} + +/***************************************************************** +Calculates fast the number rounded up to the nearest power of 2. */ +UNIV_INTERN +ulint +ut_2_power_up( +/*==========*/ + /* out: first power of 2 which is >= n */ + ulint n) /* in: number != 0 */ +{ + ulint res; + + res = 1; + + ut_ad(n > 0); + + while (res < n) { + res = res * 2; + } + + return(res); +} + +/************************************************************************** +Outputs a NUL-terminated file name, quoted with apostrophes. */ +UNIV_INTERN +void +ut_print_filename( +/*==============*/ + FILE* f, /* in: output stream */ + const char* name) /* in: name to print */ +{ + putc('\'', f); + for (;;) { + int c = *name++; + switch (c) { + case 0: + goto done; + case '\'': + putc(c, f); + /* fall through */ + default: + putc(c, f); + } + } +done: + putc('\'', f); +} + +/************************************************************************** +Outputs a fixed-length string, quoted as an SQL identifier. +If the string contains a slash '/', the string will be +output as two identifiers separated by a period (.), +as in SQL database_name.identifier. */ +UNIV_INTERN +void +ut_print_name( +/*==========*/ + FILE* f, /* in: output stream */ + trx_t* trx, /* in: transaction */ + ibool table_id,/* in: TRUE=print a table name, + FALSE=print other identifier */ + const char* name) /* in: name to print */ +{ + ut_print_namel(f, trx, table_id, name, strlen(name)); +} + +/************************************************************************** +Outputs a fixed-length string, quoted as an SQL identifier. +If the string contains a slash '/', the string will be +output as two identifiers separated by a period (.), +as in SQL database_name.identifier. */ +UNIV_INTERN +void +ut_print_namel( +/*===========*/ + FILE* f, /* in: output stream */ + trx_t* trx, /* in: transaction (NULL=no quotes) */ + ibool table_id,/* in: TRUE=print a table name, + FALSE=print other identifier */ + const char* name, /* in: name to print */ + ulint namelen)/* in: length of name */ +{ +#ifdef UNIV_HOTBACKUP + fwrite(name, 1, namelen, f); +#else + /* 2 * NAME_LEN for database and table name, + and some slack for the #mysql50# prefix and quotes */ + char buf[3 * NAME_LEN]; + const char* bufend; + + bufend = innobase_convert_name(buf, sizeof buf, + name, namelen, + trx ? trx->mysql_thd : NULL, + table_id); + + fwrite(buf, 1, bufend - buf, f); +#endif +} + +/************************************************************************** +Catenate files. */ +UNIV_INTERN +void +ut_copy_file( +/*=========*/ + FILE* dest, /* in: output file */ + FILE* src) /* in: input file to be appended to output */ +{ + long len = ftell(src); + char buf[4096]; + + rewind(src); + do { + size_t maxs = len < (long) sizeof buf + ? (size_t) len + : sizeof buf; + size_t size = fread(buf, 1, maxs, src); + fwrite(buf, 1, size, dest); + len -= (long) size; + if (size < maxs) { + break; + } + } while (len > 0); +} + +/************************************************************************** +snprintf(). */ + +#ifdef __WIN__ +#include <stdarg.h> +int +ut_snprintf( + /* out: number of characters that would + have been printed if the size were + unlimited, not including the terminating + '\0'. */ + char* str, /* out: string */ + size_t size, /* in: str size */ + const char* fmt, /* in: format */ + ...) /* in: format values */ +{ + int res; + va_list ap1; + va_list ap2; + + va_start(ap1, fmt); + va_start(ap2, fmt); + + res = _vscprintf(fmt, ap1); + ut_a(res != -1); + + if (size > 0) { + _vsnprintf(str, size, fmt, ap2); + + if ((size_t) res >= size) { + str[size - 1] = '\0'; + } + } + + va_end(ap1); + va_end(ap2); + + return(res); +} +#endif /* __WIN__ */ === added file 'storage/xtradb/ut/ut0vec.c' --- a/storage/xtradb/ut/ut0vec.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/ut/ut0vec.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,72 @@ +/***************************************************************************** + +Copyright (c) 2006, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +#include "ut0vec.h" +#ifdef UNIV_NONINL +#include "ut0vec.ic" +#endif +#include <string.h> + +/******************************************************************** +Create a new vector with the given initial size. */ +UNIV_INTERN +ib_vector_t* +ib_vector_create( +/*=============*/ + /* out: vector */ + mem_heap_t* heap, /* in: heap */ + ulint size) /* in: initial size */ +{ + ib_vector_t* vec; + + ut_a(size > 0); + + vec = mem_heap_alloc(heap, sizeof(*vec)); + + vec->heap = heap; + vec->data = mem_heap_alloc(heap, sizeof(void*) * size); + vec->used = 0; + vec->total = size; + + return(vec); +} + +/******************************************************************** +Push a new element to the vector, increasing its size if necessary. */ +UNIV_INTERN +void +ib_vector_push( +/*===========*/ + ib_vector_t* vec, /* in: vector */ + void* elem) /* in: data element */ +{ + if (vec->used >= vec->total) { + void** new_data; + ulint new_total = vec->total * 2; + + new_data = mem_heap_alloc(vec->heap, + sizeof(void*) * new_total); + memcpy(new_data, vec->data, sizeof(void*) * vec->total); + + vec->data = new_data; + vec->total = new_total; + } + + vec->data[vec->used] = elem; + vec->used++; +} === added file 'storage/xtradb/ut/ut0wqueue.c' --- a/storage/xtradb/ut/ut0wqueue.c 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/ut/ut0wqueue.c 2009-03-26 06:11:11 +0000 @@ -0,0 +1,110 @@ +/***************************************************************************** + +Copyright (c) 2006, 2009, Innobase Oy. All Rights Reserved. + +This program is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free Software +Foundation; version 2 of the License. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program; if not, write to the Free Software Foundation, Inc., 59 Temple +Place, Suite 330, Boston, MA 02111-1307 USA + +*****************************************************************************/ + +#include "ut0wqueue.h" + +/******************************************************************** +Create a new work queue. */ +UNIV_INTERN +ib_wqueue_t* +ib_wqueue_create(void) +/*===================*/ + /* out: work queue */ +{ + ib_wqueue_t* wq = mem_alloc(sizeof(ib_wqueue_t)); + + mutex_create(&wq->mutex, SYNC_WORK_QUEUE); + + wq->items = ib_list_create(); + wq->event = os_event_create(NULL); + + return(wq); +} + +/******************************************************************** +Free a work queue. */ +UNIV_INTERN +void +ib_wqueue_free( +/*===========*/ + ib_wqueue_t* wq) /* in: work queue */ +{ + ut_a(!ib_list_get_first(wq->items)); + + mutex_free(&wq->mutex); + ib_list_free(wq->items); + os_event_free(wq->event); + + mem_free(wq); +} + +/******************************************************************** +Add a work item to the queue. */ +UNIV_INTERN +void +ib_wqueue_add( +/*==========*/ + ib_wqueue_t* wq, /* in: work queue */ + void* item, /* in: work item */ + mem_heap_t* heap) /* in: memory heap to use for allocating the + list node */ +{ + mutex_enter(&wq->mutex); + + ib_list_add_last(wq->items, item, heap); + os_event_set(wq->event); + + mutex_exit(&wq->mutex); +} + +/******************************************************************** +Wait for a work item to appear in the queue. */ +UNIV_INTERN +void* +ib_wqueue_wait( + /* out: work item */ + ib_wqueue_t* wq) /* in: work queue */ +{ + ib_list_node_t* node; + + for (;;) { + os_event_wait(wq->event); + + mutex_enter(&wq->mutex); + + node = ib_list_get_first(wq->items); + + if (node) { + ib_list_remove(wq->items, node); + + if (!ib_list_get_first(wq->items)) { + /* We must reset the event when the list + gets emptied. */ + os_event_reset(wq->event); + } + + break; + } + + mutex_exit(&wq->mutex); + } + + mutex_exit(&wq->mutex); + + return(node->data); +} === added directory 'storage/xtradb/win-plugin' === added file 'storage/xtradb/win-plugin/README' --- a/storage/xtradb/win-plugin/README 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/win-plugin/README 2008-12-03 05:06:00 +0000 @@ -0,0 +1,25 @@ +This directory contains patches that need to be applied to the MySQL +source tree in order to build the dynamic plugin on Windows -- +HA_INNODB.DLL. Please note the followings when adding the patches: + +* The patch must be applied from the mysql top-level source directory. + patch -p0 < win-plugin.diff +* The patch filenames end in ".diff". +* All patches here are expected to apply cleanly to the latest MySQL 5.1 + tree when storage/innobase is replaced with this InnoDB branch. + +When applying the patch, the following files will be modified: + + * CMakeLists.txt + * sql/CMakeLists.txt + * win/configure.js + * win/build-vs71.bat + * win/build-vs8.bat + * win/build-vs8_x64.bat + +Also, two new files will be added: + + * sql/mysqld.def + * sql/mysqld_x64.def + +You can get "patch" utility for Windows from http://unxutils.sourceforge.net/ === added file 'storage/xtradb/win-plugin/win-plugin.diff' --- a/storage/xtradb/win-plugin/win-plugin.diff 1970-01-01 00:00:00 +0000 +++ b/storage/xtradb/win-plugin/win-plugin.diff 2009-03-26 06:11:11 +0000 @@ -0,0 +1,297 @@ +diff -Nur CMakeLists.txt.orig CMakeLists.txt +--- CMakeLists.txt.orig 2008-10-03 12:25:41 -05:00 ++++ CMakeLists.txt 2008-09-26 17:32:51 -05:00 +@@ -244,9 +244,9 @@ + IF(WITH_FEDERATED_STORAGE_ENGINE) + ADD_SUBDIRECTORY(storage/federated) + ENDIF(WITH_FEDERATED_STORAGE_ENGINE) +-IF(WITH_INNOBASE_STORAGE_ENGINE) ++IF(WITH_INNOBASE_STORAGE_ENGINE OR INNODB_DYNAMIC_PLUGIN) + ADD_SUBDIRECTORY(storage/innobase) +-ENDIF(WITH_INNOBASE_STORAGE_ENGINE) ++ENDIF(WITH_INNOBASE_STORAGE_ENGINE OR INNODB_DYNAMIC_PLUGIN) + ADD_SUBDIRECTORY(sql) + ADD_SUBDIRECTORY(server-tools/instance-manager) + ADD_SUBDIRECTORY(libmysql) + +diff -Nur sql/CMakeLists.txt.orig sql/CMakeLists.txt +--- sql/CMakeLists.txt.orig 2008-10-03 12:25:41 -05:00 ++++ sql/CMakeLists.txt 2008-09-24 03:58:19 -05:00 +@@ -100,6 +100,15 @@ + LINK_FLAGS "/PDB:${CMAKE_CFG_INTDIR}/mysqld${MYSQLD_EXE_SUFFIX}.pdb") + ENDIF(cmake_version EQUAL 20406) + ++# Checks for 64-bit version ++IF(CMAKE_SIZEOF_VOID_P MATCHES 8) ++SET_TARGET_PROPERTIES(mysqld PROPERTIES ++ LINK_FLAGS "/def:\"${PROJECT_SOURCE_DIR}/sql/mysqld_x64.def\"") ++ELSE(CMAKE_SIZEOF_VOID_P MATCHES 8) ++SET_TARGET_PROPERTIES(mysqld PROPERTIES ++ LINK_FLAGS "/def:\"${PROJECT_SOURCE_DIR}/sql/mysqld.def\"") ++ENDIF(CMAKE_SIZEOF_VOID_P MATCHES 8) ++ + IF(EMBED_MANIFESTS) + MYSQL_EMBED_MANIFEST("mysqld" "asInvoker") + ENDIF(EMBED_MANIFESTS) + +diff -Nur sql/mysqld.def.orig sql/mysqld.def +--- sql/mysqld.def.orig 1969-12-31 18:00:00 -06:00 ++++ sql/mysqld.def 2008-10-31 02:20:32 -05:00 +@@ -0,0 +1,98 @@ ++EXPORTS ++ ?use_hidden_primary_key@handler@@UAEXXZ ++ ?get_dynamic_partition_info@handler@@UAEXPAUPARTITION_INFO@@I@Z ++ ?read_first_row@handler@@UAEHPAEI@Z ++ ?read_range_next@handler@@UAEHXZ ++ ?read_range_first@handler@@UAEHPBUst_key_range@@0_N1@Z ++ ?read_multi_range_first@handler@@UAEHPAPAUst_key_multi_range@@PAU2@I_NPAUst_handler_buffer@@@Z ++ ?read_multi_range_next@handler@@UAEHPAPAUst_key_multi_range@@@Z ++ ?index_read_idx_map@handler@@UAEHPAEIPBEKW4ha_rkey_function@@@Z ++ ?print_error@handler@@UAEXHH@Z ++ ?clone@handler@@UAEPAV1@PAUst_mem_root@@@Z ++ ?get_auto_increment@handler@@UAEX_K00PA_K1@Z ++ ?index_next_same@handler@@UAEHPAEPBEI@Z ++ ?get_error_message@handler@@UAE_NHPAVString@@@Z ++ ?ha_thd@handler@@IBEPAVTHD@@XZ ++ ?update_auto_increment@handler@@QAEHXZ ++ ?ha_statistic_increment@handler@@IBEXPQsystem_status_var@@K@Z ++ ?trans_register_ha@@YAXPAVTHD@@_NPAUhandlerton@@@Z ++ ?cmp@Field_blob@@QAEHPBEI0I@Z ++ ?set_time@Field_timestamp@@QAEXXZ ++ ?sql_print_error@@YAXPBDZZ ++ ?sql_print_warning@@YAXPBDZZ ++ ?check_global_access@@YA_NPAVTHD@@K@Z ++ ?schema_table_store_record@@YA_NPAVTHD@@PAUst_table@@@Z ++ ?get_quote_char_for_identifier@@YAHPAVTHD@@PBDI@Z ++ ?copy@String@@QAE_NXZ ++ ?copy@String@@QAE_NABV1@@Z ++ ?copy@String@@QAE_NPBDIPAUcharset_info_st@@@Z ++ ?copy_and_convert@@YAIPADIPAUcharset_info_st@@PBDI1PAI@Z ++ ?filename_to_tablename@@YAIPBDPADI@Z ++ ?strconvert@@YAIPAUcharset_info_st@@PBD0PADIPAI@Z ++ ?calculate_key_len@@YAIPAUst_table@@IPBEK@Z ++ ?sql_alloc@@YAPAXI@Z ++ ?localtime_to_TIME@@YAXPAUst_mysql_time@@PAUtm@@@Z ++ ?push_warning@@YAPAVMYSQL_ERROR@@PAVTHD@@W4enum_warning_level@1@IPBD@Z ++ ?push_warning_printf@@YAXPAVTHD@@W4enum_warning_level@MYSQL_ERROR@@IPBDZZ ++ ?drop_table@handler@@EAEXPBD@Z ++ ?column_bitmaps_signal@handler@@UAEXXZ ++ ?delete_table@handler@@MAEHPBD@Z ++ ?rename_table@handler@@MAEHPBD0@Z ++ ?key_map_empty@@3V?$Bitmap@$0EA@@@B ++ ?THR_THD@@3PAVTHD@@A ++ ?end_of_list@@3Ulist_node@@A ++ ?mysql_tmpdir_list@@3Ust_my_tmpdir@@A ++ mysql_query_cache_invalidate4 ++ thd_query ++ thd_sql_command ++ thd_get_thread_id ++ thd_get_xid ++ thd_slave_thread ++ thd_non_transactional_update ++ thd_mark_transaction_to_rollback ++ thd_security_context ++ thd_charset ++ thd_test_options ++ thd_ha_data ++ thd_killed ++ thd_tx_isolation ++ thd_tablespace_op ++ thd_sql_command ++ thd_memdup ++ thd_make_lex_string ++ thd_in_lock_tables ++ thd_binlog_format ++ _my_hash_init ++ my_hash_free ++ my_tmpdir ++ check_if_legal_filename ++ my_filename ++ my_sync_dir_by_file ++ alloc_root ++ thr_lock_data_init ++ thr_lock_init ++ thr_lock_delete ++ my_multi_malloc ++ get_charset ++ unpack_filename ++ my_hash_insert ++ my_hash_search ++ my_hash_delete ++ mysql_bin_log_file_pos ++ mysql_bin_log_file_name ++ mysqld_embedded ++ my_thread_name ++ my_malloc ++ my_no_flags_free ++ _sanity ++ _mymalloc ++ _myfree ++ _my_strdup ++ _my_thread_var ++ my_error ++ pthread_cond_init ++ pthread_cond_signal ++ pthread_cond_wait ++ pthread_cond_destroy ++ localtime_r ++ my_strdup + +diff -Nur sql/mysqld_x64.def.orig sql/mysqld_x64.def +--- sql/mysqld_x64.def.orig 1969-12-31 18:00:00 -06:00 ++++ sql/mysqld_x64.def 2008-10-31 02:22:04 -05:00 +@@ -0,0 +1,98 @@ ++EXPORTS ++ ?use_hidden_primary_key@handler@@UEAAXXZ ++ ?get_dynamic_partition_info@handler@@UEAAXPEAUPARTITION_INFO@@I@Z ++ ?read_first_row@handler@@UEAAHPEAEI@Z ++ ?read_range_next@handler@@UEAAHXZ ++ ?read_range_first@handler@@UEAAHPEBUst_key_range@@0_N1@Z ++ ?read_multi_range_first@handler@@UEAAHPEAPEAUst_key_multi_range@@PEAU2@I_NPEAUst_handler_buffer@@@Z ++ ?read_multi_range_next@handler@@UEAAHPEAPEAUst_key_multi_range@@@Z ++ ?index_read_idx_map@handler@@UEAAHPEAEIPEBEKW4ha_rkey_function@@@Z ++ ?print_error@handler@@UEAAXHH@Z ++ ?clone@handler@@UEAAPEAV1@PEAUst_mem_root@@@Z ++ ?get_auto_increment@handler@@UEAAX_K00PEA_K1@Z ++ ?index_next_same@handler@@UEAAHPEAEPEBEI@Z ++ ?get_error_message@handler@@UEAA_NHPEAVString@@@Z ++ ?ha_thd@handler@@IEBAPEAVTHD@@XZ ++ ?update_auto_increment@handler@@QEAAHXZ ++ ?ha_statistic_increment@handler@@IEBAXPEQsystem_status_var@@K@Z ++ ?trans_register_ha@@YAXPEAVTHD@@_NPEAUhandlerton@@@Z ++ ?cmp@Field_blob@@QEAAHPEBEI0I@Z ++ ?set_time@Field_timestamp@@QEAAXXZ ++ ?sql_print_error@@YAXPEBDZZ ++ ?sql_print_warning@@YAXPEBDZZ ++ ?check_global_access@@YA_NPEAVTHD@@K@Z ++ ?schema_table_store_record@@YA_NPEAVTHD@@PEAUst_table@@@Z ++ ?get_quote_char_for_identifier@@YAHPEAVTHD@@PEBDI@Z ++ ?copy@String@@QEAA_NXZ ++ ?copy@String@@QEAA_NAEBV1@@Z ++ ?copy@String@@QEAA_NPEBDIPEAUcharset_info_st@@@Z ++ ?copy_and_convert@@YAIPEADIPEAUcharset_info_st@@PEBDI1PEAI@Z ++ ?filename_to_tablename@@YAIPEBDPEADI@Z ++ ?strconvert@@YAIPEAUcharset_info_st@@PEBD0PEADIPEAI@Z ++ ?calculate_key_len@@YAIPEAUst_table@@IPEBEK@Z ++ ?sql_alloc@@YAPEAX_K@Z ++ ?localtime_to_TIME@@YAXPEAUst_mysql_time@@PEAUtm@@@Z ++ ?push_warning@@YAPEAVMYSQL_ERROR@@PEAVTHD@@W4enum_warning_level@1@IPEBD@Z ++ ?push_warning_printf@@YAXPEAVTHD@@W4enum_warning_level@MYSQL_ERROR@@IPEBDZZ ++ ?drop_table@handler@@EEAAXPEBD@Z ++ ?column_bitmaps_signal@handler@@UEAAXXZ ++ ?delete_table@handler@@MEAAHPEBD@Z ++ ?rename_table@handler@@MEAAHPEBD0@Z ++ ?key_map_empty@@3V?$Bitmap@$0EA@@@B ++ ?THR_THD@@3PEAVTHD@@EA ++ ?end_of_list@@3Ulist_node@@A ++ ?mysql_tmpdir_list@@3Ust_my_tmpdir@@A ++ mysql_query_cache_invalidate4 ++ thd_query ++ thd_sql_command ++ thd_get_thread_id ++ thd_get_xid ++ thd_slave_thread ++ thd_non_transactional_update ++ thd_mark_transaction_to_rollback ++ thd_security_context ++ thd_charset ++ thd_test_options ++ thd_ha_data ++ thd_killed ++ thd_tx_isolation ++ thd_tablespace_op ++ thd_sql_command ++ thd_memdup ++ thd_make_lex_string ++ thd_in_lock_tables ++ thd_binlog_format ++ _my_hash_init ++ my_hash_free ++ my_tmpdir ++ check_if_legal_filename ++ my_filename ++ my_sync_dir_by_file ++ alloc_root ++ thr_lock_data_init ++ thr_lock_init ++ thr_lock_delete ++ my_multi_malloc ++ get_charset ++ unpack_filename ++ my_hash_insert ++ my_hash_search ++ my_hash_delete ++ mysql_bin_log_file_pos ++ mysql_bin_log_file_name ++ mysqld_embedded ++ my_thread_name ++ my_malloc ++ my_no_flags_free ++ _sanity ++ _mymalloc ++ _myfree ++ _my_strdup ++ _my_thread_var ++ my_error ++ pthread_cond_init ++ pthread_cond_signal ++ pthread_cond_wait ++ pthread_cond_destroy ++ localtime_r ++ my_strdup + +diff -Nur win/configure.js.orig win/configure.js +--- win/configure.js.orig 2008-09-26 21:18:37 -05:00 ++++ win/configure.js 2008-10-01 11:21:27 -05:00 +@@ -49,6 +49,7 @@ + case "CYBOZU": + case "EMBED_MANIFESTS": + case "WITH_EMBEDDED_SERVER": ++ case "INNODB_DYNAMIC_PLUGIN": + configfile.WriteLine("SET (" + args.Item(i) + " TRUE)"); + break; + case "MYSQL_SERVER_SUFFIX": + +diff -Nur win/build-vs71.bat.orig win/build-vs71.bat +--- win/build-vs71.bat.orig 2008-08-20 10:21:59 -05:00 ++++ win/build-vs71.bat 2008-10-27 10:52:38 -05:00 +@@ -15,8 +15,10 @@ + REM along with this program; if not, write to the Free Software + REM Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + ++REM CMAKE_BUILD_TYPE can be specified as Release or Debug ++ + if exist cmakecache.txt del cmakecache.txt + copy win\vs71cache.txt cmakecache.txt +-cmake -G "Visual Studio 7 .NET 2003" ++cmake -G "Visual Studio 7 .NET 2003" -DCMAKE_BUILD_TYPE=%1 + copy cmakecache.txt win\vs71cache.txt + +diff -Nur win/build-vs8.bat.orig win/build-vs8.bat +--- win/build-vs8.bat.orig 2008-08-20 10:21:59 -05:00 ++++ win/build-vs8.bat 2008-10-27 10:52:31 -05:00 +@@ -15,7 +15,9 @@ + REM along with this program; if not, write to the Free Software + REM Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + ++REM CMAKE_BUILD_TYPE can be specified as Release or Debug ++ + if exist cmakecache.txt del cmakecache.txt + copy win\vs8cache.txt cmakecache.txt +-cmake -G "Visual Studio 8 2005" ++cmake -G "Visual Studio 8 2005" -DCMAKE_BUILD_TYPE=%1 + copy cmakecache.txt win\vs8cache.txt +diff -Nur win/build-vs8_x64.bat.orig win/build-vs8_x64.bat +--- win/build-vs8_x64.bat.orig 2008-08-20 10:21:59 -05:00 ++++ win/build-vs8_x64.bat 2008-10-27 10:53:11 -05:00 +@@ -15,7 +15,9 @@ + REM along with this program; if not, write to the Free Software + REM Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + ++REM CMAKE_BUILD_TYPE can be specified as Release or Debug ++ + if exist cmakecache.txt del cmakecache.txt + copy win\vs8cache.txt cmakecache.txt +-cmake -G "Visual Studio 8 2005 Win64" ++cmake -G "Visual Studio 8 2005 Win64" -DCMAKE_BUILD_TYPE=%1 + copy cmakecache.txt win\vs8cache.txt

1 0

[Maria-developers] bzr commit into MariaDB 5.1, with Maria 1.5:maria branch (knielsen:2704)
by knielsen＠knielsen-hq.org 11 Jun '09

11 Jun '09

#At lp:maria 2704 knielsen(a)knielsen-hq.org 2009-06-11 [merge] Merge latest XtraDB from lp:percona-xtradb into MariaDB. modified: include/my_sys.h mysql-test/r/information_schema_all_engines.result mysql-test/r/mysqlbinlog_row_big.result mysql-test/r/variables-big.result mysql-test/t/mysqlbinlog_row_big.test mysql-test/t/variables-big.test mysys/mf_iocache2.c sql/log_event.cc sql/log_event.h sql/rpl_mi.cc sql/rpl_rli.cc sql/slave.cc storage/xtradb/btr/btr0cur.c storage/xtradb/btr/btr0sea.c storage/xtradb/buf/buf0buddy.c storage/xtradb/buf/buf0buf.c storage/xtradb/buf/buf0flu.c storage/xtradb/buf/buf0lru.c storage/xtradb/buf/buf0rea.c storage/xtradb/handler/ha_innodb.cc storage/xtradb/handler/i_s.cc storage/xtradb/handler/innodb_patch_info.h storage/xtradb/include/buf0buddy.h storage/xtradb/include/buf0buddy.ic storage/xtradb/include/buf0buf.h storage/xtradb/include/buf0buf.ic storage/xtradb/include/buf0flu.ic storage/xtradb/include/buf0lru.h storage/xtradb/include/sync0rw.h storage/xtradb/include/sync0rw.ic storage/xtradb/include/trx0sys.h storage/xtradb/include/trx0trx.h storage/xtradb/include/univ.i storage/xtradb/include/ut0auxconf.h storage/xtradb/sync/sync0arr.c storage/xtradb/sync/sync0rw.c storage/xtradb/trx/trx0sys.c storage/xtradb/trx/trx0trx.c per-file messages: include/my_sys.h Move generic file parsing functions out to shared code, as they are used in several places. mysys/mf_iocache2.c Move generic file parsing functions out to shared code, as they are used in several places. sql/log_event.cc Fix XtraDB build with embedded server. XtraDB needs access to replication stuff, which is missing in embedded server. Solved by defining wrapper function for this which is compiled differently for normal and embedded case. sql/log_event.h Fix XtraDB build with embedded server. XtraDB needs access to replication stuff, which is missing in embedded server. Solved by defining wrapper function for this which is compiled differently for normal and embedded case. sql/slave.cc Move generic file parsing functions out to shared code, as they are used in several places. === modified file 'include/my_sys.h' --- a/include/my_sys.h 2009-02-19 09:01:25 +0000 +++ b/include/my_sys.h 2009-06-11 12:53:26 +0000 @@ -793,6 +793,9 @@ extern size_t my_b_gets(IO_CACHE *info, extern my_off_t my_b_filelength(IO_CACHE *info); extern size_t my_b_printf(IO_CACHE *info, const char* fmt, ...); extern size_t my_b_vprintf(IO_CACHE *info, const char* fmt, va_list ap); +extern int init_strvar_from_file(char *var, int max_size, IO_CACHE *f, + const char *default_val); +extern int init_intvar_from_file(int* var, IO_CACHE* f, int default_val); extern my_bool open_cached_file(IO_CACHE *cache,const char *dir, const char *prefix, size_t cache_size, myf cache_myflags); === modified file 'mysql-test/r/information_schema_all_engines.result' --- a/mysql-test/r/information_schema_all_engines.result 2009-06-09 15:08:46 +0000 +++ b/mysql-test/r/information_schema_all_engines.result 2009-06-11 12:53:26 +0000 @@ -29,19 +29,19 @@ TABLE_PRIVILEGES TRIGGERS USER_PRIVILEGES VIEWS -INNODB_BUFFER_POOL_PAGES_INDEX -INNODB_RSEG -INNODB_LOCKS INNODB_BUFFER_POOL_PAGES +PBXT_STATISTICS +INNODB_CMP +INNODB_RSEG XTRADB_ENHANCEMENTS -INNODB_TRX +INNODB_BUFFER_POOL_PAGES_INDEX INNODB_BUFFER_POOL_PAGES_BLOB -INNODB_LOCK_WAITS +INNODB_TRX INNODB_CMP_RESET -INNODB_CMP +INNODB_LOCK_WAITS INNODB_CMPMEM_RESET +INNODB_LOCKS INNODB_CMPMEM -PBXT_STATISTICS SELECT t.table_name, c1.column_name FROM information_schema.tables t INNER JOIN @@ -85,19 +85,19 @@ TABLE_PRIVILEGES TABLE_SCHEMA TRIGGERS TRIGGER_SCHEMA USER_PRIVILEGES GRANTEE VIEWS TABLE_SCHEMA -INNODB_BUFFER_POOL_PAGES_INDEX schema_name -INNODB_RSEG rseg_id -INNODB_LOCKS lock_id INNODB_BUFFER_POOL_PAGES page_type +PBXT_STATISTICS ID +INNODB_CMP page_size +INNODB_RSEG rseg_id XTRADB_ENHANCEMENTS name -INNODB_TRX trx_id +INNODB_BUFFER_POOL_PAGES_INDEX schema_name INNODB_BUFFER_POOL_PAGES_BLOB space_id -INNODB_LOCK_WAITS requesting_trx_id +INNODB_TRX trx_id INNODB_CMP_RESET page_size -INNODB_CMP page_size +INNODB_LOCK_WAITS requesting_trx_id INNODB_CMPMEM_RESET page_size +INNODB_LOCKS lock_id INNODB_CMPMEM page_size -PBXT_STATISTICS ID SELECT t.table_name, c1.column_name FROM information_schema.tables t INNER JOIN @@ -141,19 +141,19 @@ TABLE_PRIVILEGES TABLE_SCHEMA TRIGGERS TRIGGER_SCHEMA USER_PRIVILEGES GRANTEE VIEWS TABLE_SCHEMA -INNODB_BUFFER_POOL_PAGES_INDEX schema_name -INNODB_RSEG rseg_id -INNODB_LOCKS lock_id INNODB_BUFFER_POOL_PAGES page_type +PBXT_STATISTICS ID +INNODB_CMP page_size +INNODB_RSEG rseg_id XTRADB_ENHANCEMENTS name -INNODB_TRX trx_id +INNODB_BUFFER_POOL_PAGES_INDEX schema_name INNODB_BUFFER_POOL_PAGES_BLOB space_id -INNODB_LOCK_WAITS requesting_trx_id +INNODB_TRX trx_id INNODB_CMP_RESET page_size -INNODB_CMP page_size +INNODB_LOCK_WAITS requesting_trx_id INNODB_CMPMEM_RESET page_size +INNODB_LOCKS lock_id INNODB_CMPMEM page_size -PBXT_STATISTICS ID select 1 as f1 from information_schema.tables where "CHARACTER_SETS"= (select cast(table_name as char) from information_schema.tables order by table_name limit 1) limit 1; @@ -248,19 +248,19 @@ Database: information_schema | TRIGGERS | | USER_PRIVILEGES | | VIEWS | -| INNODB_BUFFER_POOL_PAGES_INDEX | -| INNODB_RSEG | -| INNODB_LOCKS | | INNODB_BUFFER_POOL_PAGES | +| PBXT_STATISTICS | +| INNODB_CMP | +| INNODB_RSEG | | XTRADB_ENHANCEMENTS | -| INNODB_TRX | +| INNODB_BUFFER_POOL_PAGES_INDEX | | INNODB_BUFFER_POOL_PAGES_BLOB | -| INNODB_LOCK_WAITS | +| INNODB_TRX | | INNODB_CMP_RESET | -| INNODB_CMP | +| INNODB_LOCK_WAITS | | INNODB_CMPMEM_RESET | +| INNODB_LOCKS | | INNODB_CMPMEM | -| PBXT_STATISTICS | +---------------------------------------+ Database: INFORMATION_SCHEMA +---------------------------------------+ @@ -294,19 +294,19 @@ Database: INFORMATION_SCHEMA | TRIGGERS | | USER_PRIVILEGES | | VIEWS | -| INNODB_BUFFER_POOL_PAGES_INDEX | -| INNODB_RSEG | -| INNODB_LOCKS | | INNODB_BUFFER_POOL_PAGES | +| PBXT_STATISTICS | +| INNODB_CMP | +| INNODB_RSEG | | XTRADB_ENHANCEMENTS | -| INNODB_TRX | +| INNODB_BUFFER_POOL_PAGES_INDEX | | INNODB_BUFFER_POOL_PAGES_BLOB | -| INNODB_LOCK_WAITS | +| INNODB_TRX | | INNODB_CMP_RESET | -| INNODB_CMP | +| INNODB_LOCK_WAITS | | INNODB_CMPMEM_RESET | +| INNODB_LOCKS | | INNODB_CMPMEM | -| PBXT_STATISTICS | +---------------------------------------+ Wildcard: inf_rmation_schema +--------------------+ === modified file 'mysql-test/r/mysqlbinlog_row_big.result' --- a/mysql-test/r/mysqlbinlog_row_big.result 2008-12-13 19:42:12 +0000 +++ b/mysql-test/r/mysqlbinlog_row_big.result 2009-06-11 12:53:26 +0000 @@ -1,4 +1,9 @@ # +# We need big packets. +# +SET @old_global_max_allowed_packet=@@global.max_allowed_packet; +SET @@global.max_allowed_packet= 1024*1024*1024; +# # Preparatory cleanup. # DROP TABLE IF EXISTS t1; @@ -7,10 +12,6 @@ DROP TABLE IF EXISTS t1; # SET timestamp=1000000000; # -# We need big packets. -# -SET @@global.max_allowed_packet= 1024*1024*1024; -# # Delete all existing binary logs. # RESET MASTER; @@ -71,4 +72,5 @@ FLUSH LOGS; # Cleanup. # DROP TABLE t1; +SET @@global.max_allowed_packet=@old_global_max_allowed_packet; remove_file $MYSQLTEST_VARDIR/tmp/mysqlbinlog_big_1.out === modified file 'mysql-test/r/variables-big.result' --- a/mysql-test/r/variables-big.result 2008-06-26 05:18:28 +0000 +++ b/mysql-test/r/variables-big.result 2009-06-11 12:53:26 +0000 @@ -1,20 +1,20 @@ set session transaction_prealloc_size=1024*1024*1024*1; -show processlist; -Id User Host db Command Time State Info -# root localhost test Query 0 NULL show processlist +select @pid_temp = (select ID from information_schema.processlist) as 'TRUE'; +TRUE +1 set session transaction_prealloc_size=1024*1024*1024*2; -show processlist; -Id User Host db Command Time State Info -# root localhost test Query 0 NULL show processlist +select @pid_temp = (select ID from information_schema.processlist) as 'TRUE'; +TRUE +1 set session transaction_prealloc_size=1024*1024*1024*3; -show processlist; -Id User Host db Command Time State Info -# root localhost test Query 0 NULL show processlist +select @pid_temp = (select ID from information_schema.processlist) as 'TRUE'; +TRUE +1 set session transaction_prealloc_size=1024*1024*1024*4; -show processlist; -Id User Host db Command Time State Info -# root localhost test Query 0 NULL show processlist +select @pid_temp = (select ID from information_schema.processlist) as 'TRUE'; +TRUE +1 set session transaction_prealloc_size=1024*1024*1024*5; -show processlist; -Id User Host db Command Time State Info -# root localhost test Query 0 NULL show processlist +select @pid_temp = (select ID from information_schema.processlist) as 'TRUE'; +TRUE +1 === modified file 'mysql-test/t/mysqlbinlog_row_big.test' --- a/mysql-test/t/mysqlbinlog_row_big.test 2008-12-13 19:42:12 +0000 +++ b/mysql-test/t/mysqlbinlog_row_big.test 2009-06-11 12:53:26 +0000 @@ -24,6 +24,16 @@ --source include/big_test.inc --echo # +--echo # We need big packets. +--echo # +connect (con1, localhost, root,,); +connection con1; +SET @old_global_max_allowed_packet=@@global.max_allowed_packet; +SET @@global.max_allowed_packet= 1024*1024*1024; +connect (con2, localhost, root,,); +connection con2; + +--echo # --echo # Preparatory cleanup. --echo # --disable_warnings @@ -36,11 +46,6 @@ DROP TABLE IF EXISTS t1; SET timestamp=1000000000; --echo # ---echo # We need big packets. ---echo # -SET @@global.max_allowed_packet= 1024*1024*1024; - ---echo # --echo # Delete all existing binary logs. --echo # RESET MASTER; @@ -122,9 +127,14 @@ let $MYSQLD_DATADIR= `select @@datadir`; --echo # DROP TABLE t1; +connection con1; +SET @@global.max_allowed_packet=@old_global_max_allowed_packet; + --echo remove_file \$MYSQLTEST_VARDIR/$mysqlbinlog_output # # NOTE: If you want to see the *huge* mysqlbinlog output, disable next line: # --remove_file $MYSQLTEST_VARDIR/$mysqlbinlog_output +disconnect con1 +disconnect con2 === modified file 'mysql-test/t/variables-big.test' --- a/mysql-test/t/variables-big.test 2008-06-26 05:18:28 +0000 +++ b/mysql-test/t/variables-big.test 2009-06-11 12:53:26 +0000 @@ -8,19 +8,20 @@ # Bug #27322 failure to allocate transaction_prealloc_size causes crash # +set @pid_temp = (select ID from information_schema.processlist); set session transaction_prealloc_size=1024*1024*1024*1; --replace_column 1 # -show processlist; +select @pid_temp = (select ID from information_schema.processlist) as 'TRUE'; set session transaction_prealloc_size=1024*1024*1024*2; --replace_column 1 # -show processlist; +select @pid_temp = (select ID from information_schema.processlist) as 'TRUE'; --replace_column 1 # set session transaction_prealloc_size=1024*1024*1024*3; --replace_column 1 # -show processlist; +select @pid_temp = (select ID from information_schema.processlist) as 'TRUE'; set session transaction_prealloc_size=1024*1024*1024*4; --replace_column 1 # -show processlist; +select @pid_temp = (select ID from information_schema.processlist) as 'TRUE'; set session transaction_prealloc_size=1024*1024*1024*5; --replace_column 1 # -show processlist; +select @pid_temp = (select ID from information_schema.processlist) as 'TRUE'; === modified file 'mysys/mf_iocache2.c' --- a/mysys/mf_iocache2.c 2008-02-13 19:27:12 +0000 +++ b/mysys/mf_iocache2.c 2009-06-11 12:53:26 +0000 @@ -464,3 +464,52 @@ process_flags: err: return (size_t) -1; } + +int init_strvar_from_file(char *var, int max_size, IO_CACHE *f, + const char *default_val) +{ + uint length; + DBUG_ENTER("init_strvar_from_file"); + + if ((length=my_b_gets(f,var, max_size))) + { + char* last_p = var + length -1; + if (*last_p == '\n') + *last_p = 0; /* if we stopped on newline, kill it */ + else + { + /* + If we truncated a line or stopped on last char, remove all chars + up to and including newline. + */ + int c; + while (((c=my_b_get(f)) != '\n' && c != my_b_EOF)) + ; + } + DBUG_RETURN(0); + } + else if (default_val) + { + strmake(var, default_val, max_size-1); + DBUG_RETURN(0); + } + DBUG_RETURN(1); +} + +int init_intvar_from_file(int* var, IO_CACHE* f, int default_val) +{ + char buf[32]; + DBUG_ENTER("init_intvar_from_file"); + + if (my_b_gets(f, buf, sizeof(buf))) + { + *var = atoi(buf); + DBUG_RETURN(0); + } + else if (default_val) + { + *var = default_val; + DBUG_RETURN(0); + } + DBUG_RETURN(1); +} === modified file 'sql/log_event.cc' --- a/sql/log_event.cc 2009-05-06 12:03:24 +0000 +++ b/sql/log_event.cc 2009-06-11 12:53:26 +0000 @@ -9239,3 +9239,29 @@ st_print_event_info::st_print_event_info open_cached_file(&body_cache, NULL, NULL, 0, flags); } #endif + +#if defined(MYSQL_SERVER) +/* + Access to the current replication position. + + There is a dummy replacement for this in the embedded library that returns + FALSE; this is used by XtraDB to allow it to access replication stuff while + still being able to use the same plugin in both stand-alone and embedded. +*/ +bool rpl_get_position_info(const char **log_file_name, ulonglong *log_pos, + const char **group_relay_log_name, + ulonglong *relay_log_pos) +{ +#if defined(EMBEDDED_LIBRARY) || !defined(HAVE_REPLICATION) + return FALSE; +#else + const Relay_log_info *rli= &(active_mi->rli); + *log_file_name= rli->group_master_log_name; + *log_pos= rli->group_master_log_pos + + (rli->future_event_relay_log_pos - rli->group_relay_log_pos); + *group_relay_log_name= rli->group_relay_log_name; + *relay_log_pos= rli->future_event_relay_log_pos; + return TRUE; +#endif +} +#endif === modified file 'sql/log_event.h' --- a/sql/log_event.h 2009-01-23 12:22:05 +0000 +++ b/sql/log_event.h 2009-06-11 12:53:26 +0000 @@ -3915,6 +3915,10 @@ static inline bool copy_event_cache_to_f reinit_io_cache(cache, WRITE_CACHE, 0, FALSE, TRUE); } +bool rpl_get_position_info(const char **log_file_name, ulonglong *log_pos, + const char **group_relay_log_name, + ulonglong *relay_log_pos); + /** @} (end of group Replication) */ === modified file 'sql/rpl_mi.cc' --- a/sql/rpl_mi.cc 2008-12-02 22:02:52 +0000 +++ b/sql/rpl_mi.cc 2009-06-11 12:53:26 +0000 @@ -22,11 +22,6 @@ #ifdef HAVE_REPLICATION -// Defined in slave.cc -int init_intvar_from_file(int* var, IO_CACHE* f, int default_val); -int init_strvar_from_file(char *var, int max_size, IO_CACHE *f, - const char *default_val); - Master_info::Master_info() :Slave_reporting_capability("I/O"), ssl(0), ssl_verify_server_cert(0), fd(-1), io_thd(0), inited(0), === modified file 'sql/rpl_rli.cc' --- a/sql/rpl_rli.cc 2009-05-06 12:03:24 +0000 +++ b/sql/rpl_rli.cc 2009-06-11 12:53:26 +0000 @@ -23,11 +23,6 @@ static int count_relay_log_space(Relay_log_info* rli); -// Defined in slave.cc -int init_intvar_from_file(int* var, IO_CACHE* f, int default_val); -int init_strvar_from_file(char *var, int max_size, IO_CACHE *f, - const char *default_val); - Relay_log_info::Relay_log_info() :Slave_reporting_capability("SQL"), === modified file 'sql/slave.cc' --- a/sql/slave.cc 2009-05-06 12:03:24 +0000 +++ b/sql/slave.cc 2009-06-11 12:53:26 +0000 @@ -755,57 +755,6 @@ const char *print_slave_db_safe(const ch DBUG_RETURN((db ? db : "")); } -int init_strvar_from_file(char *var, int max_size, IO_CACHE *f, - const char *default_val) -{ - uint length; - DBUG_ENTER("init_strvar_from_file"); - - if ((length=my_b_gets(f,var, max_size))) - { - char* last_p = var + length -1; - if (*last_p == '\n') - *last_p = 0; // if we stopped on newline, kill it - else - { - /* - If we truncated a line or stopped on last char, remove all chars - up to and including newline. - */ - int c; - while (((c=my_b_get(f)) != '\n' && c != my_b_EOF)) - ; - } - DBUG_RETURN(0); - } - else if (default_val) - { - strmake(var, default_val, max_size-1); - DBUG_RETURN(0); - } - DBUG_RETURN(1); -} - - -int init_intvar_from_file(int* var, IO_CACHE* f, int default_val) -{ - char buf[32]; - DBUG_ENTER("init_intvar_from_file"); - - - if (my_b_gets(f, buf, sizeof(buf))) - { - *var = atoi(buf); - DBUG_RETURN(0); - } - else if (default_val) - { - *var = default_val; - DBUG_RETURN(0); - } - DBUG_RETURN(1); -} - /* Note that we rely on the master's version (3.23, 4.0.14 etc) instead of relying on the binlog's version. This is not perfect: imagine an upgrade === modified file 'storage/xtradb/btr/btr0cur.c' --- a/storage/xtradb/btr/btr0cur.c 2009-03-26 06:11:11 +0000 +++ b/storage/xtradb/btr/btr0cur.c 2009-05-04 02:45:47 +0000 @@ -3733,8 +3733,7 @@ btr_blob_free( mtr_commit(mtr); - //buf_pool_mutex_enter(); - mutex_enter(&LRU_list_mutex); + buf_pool_mutex_enter(); mutex_enter(&block->mutex); /* Only free the block if it is still allocated to @@ -3745,22 +3744,17 @@ btr_blob_free( && buf_block_get_space(block) == space && buf_block_get_page_no(block) == page_no) { - if (buf_LRU_free_block(&block->page, all, NULL, TRUE) + if (buf_LRU_free_block(&block->page, all, NULL) != BUF_LRU_FREED - && all && block->page.zip.data - /* Now, buf_LRU_free_block() may release mutex temporarily */ - && buf_block_get_state(block) == BUF_BLOCK_FILE_PAGE - && buf_block_get_space(block) == space - && buf_block_get_page_no(block) == page_no) { + && all && block->page.zip.data) { /* Attempt to deallocate the uncompressed page if the whole block cannot be deallocted. */ - buf_LRU_free_block(&block->page, FALSE, NULL, TRUE); + buf_LRU_free_block(&block->page, FALSE, NULL); } } - //buf_pool_mutex_exit(); - mutex_exit(&LRU_list_mutex); + buf_pool_mutex_exit(); mutex_exit(&block->mutex); } === modified file 'storage/xtradb/btr/btr0sea.c' --- a/storage/xtradb/btr/btr0sea.c 2009-03-26 06:11:11 +0000 +++ b/storage/xtradb/btr/btr0sea.c 2009-05-04 02:45:47 +0000 @@ -1731,8 +1731,7 @@ btr_search_validate(void) rec_offs_init(offsets_); rw_lock_x_lock(&btr_search_latch); - //buf_pool_mutex_enter(); - rw_lock_x_lock(&page_hash_latch); + buf_pool_mutex_enter(); cell_count = hash_get_n_cells(btr_search_sys->hash_index); @@ -1740,13 +1739,11 @@ btr_search_validate(void) /* We release btr_search_latch every once in a while to give other queries a chance to run. */ if ((i != 0) && ((i % chunk_size) == 0)) { - //buf_pool_mutex_exit(); - rw_lock_x_unlock(&page_hash_latch); + buf_pool_mutex_exit(); rw_lock_x_unlock(&btr_search_latch); os_thread_yield(); rw_lock_x_lock(&btr_search_latch); - //buf_pool_mutex_enter(); - rw_lock_x_lock(&page_hash_latch); + buf_pool_mutex_enter(); } node = hash_get_nth_cell(btr_search_sys->hash_index, i)->node; @@ -1853,13 +1850,11 @@ btr_search_validate(void) /* We release btr_search_latch every once in a while to give other queries a chance to run. */ if (i != 0) { - //buf_pool_mutex_exit(); - rw_lock_x_unlock(&page_hash_latch); + buf_pool_mutex_exit(); rw_lock_x_unlock(&btr_search_latch); os_thread_yield(); rw_lock_x_lock(&btr_search_latch); - //buf_pool_mutex_enter(); - rw_lock_x_lock(&page_hash_latch); + buf_pool_mutex_enter(); } if (!ha_validate(btr_search_sys->hash_index, i, end_index)) { @@ -1867,8 +1862,7 @@ btr_search_validate(void) } } - //buf_pool_mutex_exit(); - rw_lock_x_unlock(&page_hash_latch); + buf_pool_mutex_exit(); rw_lock_x_unlock(&btr_search_latch); if (UNIV_LIKELY_NULL(heap)) { mem_heap_free(heap); === modified file 'storage/xtradb/buf/buf0buddy.c' --- a/storage/xtradb/buf/buf0buddy.c 2009-03-26 06:11:11 +0000 +++ b/storage/xtradb/buf/buf0buddy.c 2009-05-04 04:32:30 +0000 @@ -131,8 +131,7 @@ buf_buddy_alloc_zip( { buf_page_t* bpage; - //ut_ad(buf_pool_mutex_own()); - ut_ad(mutex_own(&zip_free_mutex)); + ut_ad(buf_pool_mutex_own()); ut_a(i < BUF_BUDDY_SIZES); #if defined UNIV_DEBUG && !defined UNIV_DEBUG_VALGRIND @@ -178,19 +177,16 @@ static void buf_buddy_block_free( /*=================*/ - void* buf, /* in: buffer frame to deallocate */ - ibool have_page_hash_mutex) + void* buf) /* in: buffer frame to deallocate */ { const ulint fold = BUF_POOL_ZIP_FOLD_PTR(buf); buf_page_t* bpage; buf_block_t* block; - //ut_ad(buf_pool_mutex_own()); + ut_ad(buf_pool_mutex_own()); ut_ad(!mutex_own(&buf_pool_zip_mutex)); ut_a(!ut_align_offset(buf, UNIV_PAGE_SIZE)); - mutex_enter(&zip_hash_mutex); - HASH_SEARCH(hash, buf_pool->zip_hash, fold, buf_page_t*, bpage, ut_ad(buf_page_get_state(bpage) == BUF_BLOCK_MEMORY && bpage->in_zip_hash && !bpage->in_page_hash), @@ -202,14 +198,12 @@ buf_buddy_block_free( ut_d(bpage->in_zip_hash = FALSE); HASH_DELETE(buf_page_t, hash, buf_pool->zip_hash, fold, bpage); - mutex_exit(&zip_hash_mutex); - ut_d(memset(buf, 0, UNIV_PAGE_SIZE)); UNIV_MEM_INVALID(buf, UNIV_PAGE_SIZE); block = (buf_block_t*) bpage; mutex_enter(&block->mutex); - buf_LRU_block_free_non_file_page(block, have_page_hash_mutex); + buf_LRU_block_free_non_file_page(block); mutex_exit(&block->mutex); ut_ad(buf_buddy_n_frames > 0); @@ -225,7 +219,7 @@ buf_buddy_block_register( buf_block_t* block) /* in: buffer frame to allocate */ { const ulint fold = BUF_POOL_ZIP_FOLD(block); - //ut_ad(buf_pool_mutex_own()); + ut_ad(buf_pool_mutex_own()); ut_ad(!mutex_own(&buf_pool_zip_mutex)); buf_block_set_state(block, BUF_BLOCK_MEMORY); @@ -236,10 +230,7 @@ buf_buddy_block_register( ut_ad(!block->page.in_page_hash); ut_ad(!block->page.in_zip_hash); ut_d(block->page.in_zip_hash = TRUE); - - mutex_enter(&zip_hash_mutex); HASH_INSERT(buf_page_t, hash, buf_pool->zip_hash, fold, &block->page); - mutex_exit(&zip_hash_mutex); ut_d(buf_buddy_n_frames++); } @@ -293,28 +284,24 @@ buf_buddy_alloc_low( possibly NULL if lru==NULL */ ulint i, /* in: index of buf_pool->zip_free[], or BUF_BUDDY_SIZES */ - ibool* lru, /* in: pointer to a variable that will be assigned + ibool* lru) /* in: pointer to a variable that will be assigned TRUE if storage was allocated from the LRU list and buf_pool_mutex was temporarily released, or NULL if the LRU list should not be used */ - ibool have_page_hash_mutex) { buf_block_t* block; - //ut_ad(buf_pool_mutex_own()); + ut_ad(buf_pool_mutex_own()); ut_ad(!mutex_own(&buf_pool_zip_mutex)); if (i < BUF_BUDDY_SIZES) { /* Try to allocate from the buddy system. */ - mutex_enter(&zip_free_mutex); block = buf_buddy_alloc_zip(i); if (block) { goto func_exit; } - - mutex_exit(&zip_free_mutex); } /* Try allocating from the buf_pool->free list. */ @@ -331,31 +318,18 @@ buf_buddy_alloc_low( } /* Try replacing an uncompressed page in the buffer pool. */ - //buf_pool_mutex_exit(); - mutex_exit(&LRU_list_mutex); - if (have_page_hash_mutex) { - mutex_exit(&flush_list_mutex); - rw_lock_x_unlock(&page_hash_latch); - } + buf_pool_mutex_exit(); block = buf_LRU_get_free_block(0); *lru = TRUE; - //buf_pool_mutex_enter(); - mutex_enter(&LRU_list_mutex); - if (have_page_hash_mutex) { - mutex_enter(&flush_list_mutex); - rw_lock_x_lock(&page_hash_latch); - } + buf_pool_mutex_enter(); alloc_big: buf_buddy_block_register(block); - mutex_enter(&zip_free_mutex); block = buf_buddy_alloc_from(block->frame, i, BUF_BUDDY_SIZES); func_exit: buf_buddy_stat[i].used++; - mutex_exit(&zip_free_mutex); - return(block); } @@ -371,8 +345,7 @@ buf_buddy_relocate_block( { buf_page_t* b; - //ut_ad(buf_pool_mutex_own()); - ut_ad(mutex_own(&flush_list_mutex)); + ut_ad(buf_pool_mutex_own()); switch (buf_page_get_state(bpage)) { case BUF_BLOCK_ZIP_FREE: @@ -381,7 +354,7 @@ buf_buddy_relocate_block( case BUF_BLOCK_FILE_PAGE: case BUF_BLOCK_MEMORY: case BUF_BLOCK_REMOVE_HASH: - /* ut_error; */ /* optimistic */ + ut_error; case BUF_BLOCK_ZIP_DIRTY: /* Cannot relocate dirty pages. */ return(FALSE); @@ -391,17 +364,9 @@ buf_buddy_relocate_block( } mutex_enter(&buf_pool_zip_mutex); - mutex_enter(&zip_free_mutex); if (!buf_page_can_relocate(bpage)) { mutex_exit(&buf_pool_zip_mutex); - mutex_exit(&zip_free_mutex); - return(FALSE); - } - - if (bpage != buf_page_hash_get(bpage->space, bpage->offset)) { - mutex_exit(&buf_pool_zip_mutex); - mutex_exit(&zip_free_mutex); return(FALSE); } @@ -419,7 +384,6 @@ buf_buddy_relocate_block( } mutex_exit(&buf_pool_zip_mutex); - mutex_exit(&zip_free_mutex); return(TRUE); } @@ -432,15 +396,13 @@ buf_buddy_relocate( /* out: TRUE if relocated */ void* src, /* in: block to relocate */ void* dst, /* in: free block to relocate to */ - ulint i, /* in: index of buf_pool->zip_free[] */ - ibool have_page_hash_mutex) + ulint i) /* in: index of buf_pool->zip_free[] */ { buf_page_t* bpage; const ulint size = BUF_BUDDY_LOW << i; ullint usec = ut_time_us(NULL); - //ut_ad(buf_pool_mutex_own()); - ut_ad(mutex_own(&zip_free_mutex)); + ut_ad(buf_pool_mutex_own()); ut_ad(!mutex_own(&buf_pool_zip_mutex)); ut_ad(!ut_align_offset(src, size)); ut_ad(!ut_align_offset(dst, size)); @@ -459,17 +421,9 @@ buf_buddy_relocate( actually is a properly initialized buf_page_t object. */ if (size >= PAGE_ZIP_MIN_SIZE) { - if (!have_page_hash_mutex) - mutex_exit(&zip_free_mutex); - /* This is a compressed page. */ mutex_t* mutex; - if (!have_page_hash_mutex) { - mutex_enter(&LRU_list_mutex); - mutex_enter(&flush_list_mutex); - rw_lock_x_lock(&page_hash_latch); - } /* The src block may be split into smaller blocks, some of which may be free. Thus, the mach_read_from_4() calls below may attempt to read @@ -490,12 +444,6 @@ buf_buddy_relocate( added to buf_pool->page_hash yet. Obviously, it cannot be relocated. */ - if (!have_page_hash_mutex) { - mutex_enter(&zip_free_mutex); - mutex_exit(&LRU_list_mutex); - mutex_exit(&flush_list_mutex); - rw_lock_x_unlock(&page_hash_latch); - } return(FALSE); } @@ -505,19 +453,9 @@ buf_buddy_relocate( For the sake of simplicity, give up. */ ut_ad(page_zip_get_size(&bpage->zip) < size); - if (!have_page_hash_mutex) { - mutex_enter(&zip_free_mutex); - mutex_exit(&LRU_list_mutex); - mutex_exit(&flush_list_mutex); - rw_lock_x_unlock(&page_hash_latch); - } return(FALSE); } - /* To keep latch order */ - if (have_page_hash_mutex) - mutex_exit(&zip_free_mutex); - /* The block must have been allocated, but it may contain uninitialized data. */ UNIV_MEM_ASSERT_W(src, size); @@ -525,7 +463,6 @@ buf_buddy_relocate( mutex = buf_page_get_mutex(bpage); mutex_enter(mutex); - mutex_enter(&zip_free_mutex); if (buf_page_can_relocate(bpage)) { /* Relocate the compressed page. */ @@ -542,53 +479,17 @@ success: buddy_stat->relocated_usec += ut_time_us(NULL) - usec; } - - if (!have_page_hash_mutex) { - mutex_exit(&LRU_list_mutex); - mutex_exit(&flush_list_mutex); - rw_lock_x_unlock(&page_hash_latch); - } return(TRUE); } - if (!have_page_hash_mutex) { - mutex_exit(&LRU_list_mutex); - mutex_exit(&flush_list_mutex); - rw_lock_x_unlock(&page_hash_latch); - } - mutex_exit(mutex); } else if (i == buf_buddy_get_slot(sizeof(buf_page_t))) { /* This must be a buf_page_t object. */ UNIV_MEM_ASSERT_RW(src, size); - - mutex_exit(&zip_free_mutex); - - if (!have_page_hash_mutex) { - mutex_enter(&LRU_list_mutex); - mutex_enter(&flush_list_mutex); - rw_lock_x_lock(&page_hash_latch); - } - if (buf_buddy_relocate_block(src, dst)) { - mutex_enter(&zip_free_mutex); - - if (!have_page_hash_mutex) { - mutex_exit(&LRU_list_mutex); - mutex_exit(&flush_list_mutex); - rw_lock_x_unlock(&page_hash_latch); - } goto success; } - - mutex_enter(&zip_free_mutex); - - if (!have_page_hash_mutex) { - mutex_exit(&LRU_list_mutex); - mutex_exit(&flush_list_mutex); - rw_lock_x_unlock(&page_hash_latch); - } } return(FALSE); @@ -602,14 +503,12 @@ buf_buddy_free_low( /*===============*/ void* buf, /* in: block to be freed, must not be pointed to by the buffer pool */ - ulint i, /* in: index of buf_pool->zip_free[] */ - ibool have_page_hash_mutex) + ulint i) /* in: index of buf_pool->zip_free[] */ { buf_page_t* bpage; buf_page_t* buddy; - //ut_ad(buf_pool_mutex_own()); - ut_ad(mutex_own(&zip_free_mutex)); + ut_ad(buf_pool_mutex_own()); ut_ad(!mutex_own(&buf_pool_zip_mutex)); ut_ad(i <= BUF_BUDDY_SIZES); ut_ad(buf_buddy_stat[i].used > 0); @@ -620,7 +519,7 @@ recombine: ut_d(((buf_page_t*) buf)->state = BUF_BLOCK_ZIP_FREE); if (i == BUF_BUDDY_SIZES) { - buf_buddy_block_free(buf, have_page_hash_mutex); + buf_buddy_block_free(buf); return; } @@ -678,7 +577,7 @@ buddy_nonfree: #endif /* UNIV_DEBUG_VALGRIND */ /* The buddy is not free. Is there a free block of this size? */ - bpage = UT_LIST_GET_LAST(buf_pool->zip_free[i]); + bpage = UT_LIST_GET_FIRST(buf_pool->zip_free[i]); if (bpage) { /* Remove the block from the free list, because a successful @@ -688,7 +587,7 @@ buddy_nonfree: buf_buddy_remove_from_free(bpage, i); /* Try to relocate the buddy of buf to the free block. */ - if (buf_buddy_relocate(buddy, bpage, i, have_page_hash_mutex)) { + if (buf_buddy_relocate(buddy, bpage, i)) { ut_d(buddy->state = BUF_BLOCK_ZIP_FREE); goto buddy_free2; @@ -716,7 +615,7 @@ buddy_nonfree: } #endif /* UNIV_DEBUG && !UNIV_DEBUG_VALGRIND */ - if (buf_buddy_relocate(buddy, buf, i, have_page_hash_mutex)) { + if (buf_buddy_relocate(buddy, buf, i)) { buf = bpage; UNIV_MEM_VALID(bpage, BUF_BUDDY_LOW << i); === modified file 'storage/xtradb/buf/buf0buf.c' --- a/storage/xtradb/buf/buf0buf.c 2009-03-26 06:11:11 +0000 +++ b/storage/xtradb/buf/buf0buf.c 2009-05-04 04:32:30 +0000 @@ -244,12 +244,6 @@ UNIV_INTERN buf_pool_t* buf_pool = NULL; /* mutex protecting the buffer pool struct and control blocks, except the read-write lock in them */ UNIV_INTERN mutex_t buf_pool_mutex; -UNIV_INTERN mutex_t LRU_list_mutex; -UNIV_INTERN mutex_t flush_list_mutex; -UNIV_INTERN rw_lock_t page_hash_latch; -UNIV_INTERN mutex_t free_list_mutex; -UNIV_INTERN mutex_t zip_free_mutex; -UNIV_INTERN mutex_t zip_hash_mutex; /* mutex protecting the control blocks of compressed-only pages (of type buf_page_t, not buf_block_t) */ UNIV_INTERN mutex_t buf_pool_zip_mutex; @@ -670,9 +664,9 @@ buf_block_init( block->page.in_zip_hash = FALSE; block->page.in_flush_list = FALSE; block->page.in_free_list = FALSE; + block->in_unzip_LRU_list = FALSE; #endif /* UNIV_DEBUG */ block->page.in_LRU_list = FALSE; - block->in_unzip_LRU_list = FALSE; #if defined UNIV_AHI_DEBUG || defined UNIV_DEBUG block->n_pointers = 0; #endif /* UNIV_AHI_DEBUG || UNIV_DEBUG */ @@ -757,10 +751,8 @@ buf_chunk_init( memset(block->frame, '\0', UNIV_PAGE_SIZE); #endif /* Add the block to the free list */ - mutex_enter(&free_list_mutex); UT_LIST_ADD_LAST(list, buf_pool->free, (&block->page)); ut_d(block->page.in_free_list = TRUE); - mutex_exit(&free_list_mutex); block++; frame += UNIV_PAGE_SIZE; @@ -786,7 +778,7 @@ buf_chunk_contains_zip( ulint i; ut_ad(buf_pool); - //ut_ad(buf_pool_mutex_own()); + ut_ad(buf_pool_mutex_own()); block = chunk->blocks; @@ -840,7 +832,7 @@ buf_chunk_not_freed( ulint i; ut_ad(buf_pool); - //ut_ad(buf_pool_mutex_own()); /*optimistic...*/ + ut_ad(buf_pool_mutex_own()); block = chunk->blocks; @@ -873,7 +865,7 @@ buf_chunk_all_free( ulint i; ut_ad(buf_pool); - ut_ad(buf_pool_mutex_own()); /* but we need all mutex here */ + ut_ad(buf_pool_mutex_own()); block = chunk->blocks; @@ -899,7 +891,7 @@ buf_chunk_free( buf_block_t* block; const buf_block_t* block_end; - ut_ad(buf_pool_mutex_own()); /* but we need all mutex here */ + ut_ad(buf_pool_mutex_own()); block_end = chunk->blocks + chunk->size; @@ -911,10 +903,8 @@ buf_chunk_free( ut_ad(!block->in_unzip_LRU_list); ut_ad(!block->page.in_flush_list); /* Remove the block from the free list. */ - mutex_enter(&free_list_mutex); ut_ad(block->page.in_free_list); UT_LIST_REMOVE(list, buf_pool->free, (&block->page)); - mutex_exit(&free_list_mutex); /* Free the latches. */ mutex_free(&block->mutex); @@ -945,18 +935,8 @@ buf_pool_init(void) /* 1. Initialize general fields ------------------------------- */ mutex_create(&buf_pool_mutex, SYNC_BUF_POOL); - mutex_create(&LRU_list_mutex, SYNC_NO_ORDER_CHECK); - mutex_create(&flush_list_mutex, SYNC_NO_ORDER_CHECK); - rw_lock_create(&page_hash_latch, SYNC_NO_ORDER_CHECK); - mutex_create(&free_list_mutex, SYNC_NO_ORDER_CHECK); - mutex_create(&zip_free_mutex, SYNC_NO_ORDER_CHECK); - mutex_create(&zip_hash_mutex, SYNC_NO_ORDER_CHECK); - mutex_create(&buf_pool_zip_mutex, SYNC_BUF_BLOCK); - mutex_enter(&LRU_list_mutex); - mutex_enter(&flush_list_mutex); - rw_lock_x_lock(&page_hash_latch); buf_pool_mutex_enter(); buf_pool->n_chunks = 1; @@ -993,9 +973,6 @@ buf_pool_init(void) --------------------------- */ /* All fields are initialized by mem_zalloc(). */ - mutex_exit(&LRU_list_mutex); - mutex_exit(&flush_list_mutex); - rw_lock_x_unlock(&page_hash_latch); buf_pool_mutex_exit(); btr_search_sys_create(buf_pool->curr_size @@ -1128,11 +1105,7 @@ buf_relocate( buf_page_t* b; ulint fold; - //ut_ad(buf_pool_mutex_own()); - ut_ad(mutex_own(&LRU_list_mutex)); -#ifdef UNIV_SYNC_DEBUG - ut_ad(rw_lock_own(&page_hash_latch, RW_LOCK_EX)); -#endif + ut_ad(buf_pool_mutex_own()); ut_ad(mutex_own(buf_page_get_mutex(bpage))); ut_a(buf_page_get_io_fix(bpage) == BUF_IO_NONE); ut_a(bpage->buf_fix_count == 0); @@ -1213,8 +1186,7 @@ buf_pool_shrink( try_again: btr_search_disable(); /* Empty the adaptive hash index again */ - //buf_pool_mutex_enter(); - mutex_enter(&LRU_list_mutex); + buf_pool_mutex_enter(); shrink_again: if (buf_pool->n_chunks <= 1) { @@ -1285,7 +1257,7 @@ shrink_again: buf_LRU_make_block_old(&block->page); dirty++; - } else if (buf_LRU_free_block(&block->page, TRUE, NULL, FALSE) + } else if (buf_LRU_free_block(&block->page, TRUE, NULL) != BUF_LRU_FREED) { nonfree++; } @@ -1293,8 +1265,7 @@ shrink_again: mutex_exit(&block->mutex); } - //buf_pool_mutex_exit(); - mutex_exit(&LRU_list_mutex); + buf_pool_mutex_exit(); /* Request for a flush of the chunk if it helps. Do not flush if there are non-free blocks, since @@ -1343,8 +1314,7 @@ shrink_again: func_done: srv_buf_pool_old_size = srv_buf_pool_size; func_exit: - //buf_pool_mutex_exit(); - mutex_exit(&LRU_list_mutex); + buf_pool_mutex_exit(); btr_search_enable(); } @@ -1362,11 +1332,7 @@ buf_pool_page_hash_rebuild(void) hash_table_t* zip_hash; buf_page_t* b; - //buf_pool_mutex_enter(); - mutex_enter(&LRU_list_mutex); - mutex_enter(&flush_list_mutex); - rw_lock_x_lock(&page_hash_latch); - + buf_pool_mutex_enter(); /* Free, create, and populate the hash table. */ hash_table_free(buf_pool->page_hash); @@ -1446,10 +1412,7 @@ buf_pool_page_hash_rebuild(void) } } - //buf_pool_mutex_exit(); - mutex_exit(&LRU_list_mutex); - mutex_exit(&flush_list_mutex); - rw_lock_x_unlock(&page_hash_latch); + buf_pool_mutex_exit(); } /************************************************************************ @@ -1459,20 +1422,17 @@ void buf_pool_resize(void) /*=================*/ { - //buf_pool_mutex_enter(); - mutex_enter(&LRU_list_mutex); + buf_pool_mutex_enter(); if (srv_buf_pool_old_size == srv_buf_pool_size) { - //buf_pool_mutex_exit(); - mutex_exit(&LRU_list_mutex); + buf_pool_mutex_exit(); return; } if (srv_buf_pool_curr_size + 1048576 > srv_buf_pool_size) { - //buf_pool_mutex_exit(); - mutex_exit(&LRU_list_mutex); + buf_pool_mutex_exit(); /* Disable adaptive hash indexes and empty the index in order to free up memory in the buffer pool chunks. */ @@ -1506,8 +1466,7 @@ buf_pool_resize(void) } srv_buf_pool_old_size = srv_buf_pool_size; - //buf_pool_mutex_exit(); - mutex_exit(&LRU_list_mutex); + buf_pool_mutex_exit(); } buf_pool_page_hash_rebuild(); @@ -1529,14 +1488,12 @@ buf_block_make_young( if (buf_page_peek_if_too_old(bpage)) { - //buf_pool_mutex_enter(); - mutex_enter(&LRU_list_mutex); + buf_pool_mutex_enter(); /* There has been freeing activity in the LRU list: best to move to the head of the LRU list */ buf_LRU_make_block_young(bpage); - //buf_pool_mutex_exit(); - mutex_exit(&LRU_list_mutex); + buf_pool_mutex_exit(); } } @@ -1550,15 +1507,13 @@ buf_page_make_young( /*================*/ buf_page_t* bpage) /* in: buffer block of a file page */ { - //buf_pool_mutex_enter(); - mutex_enter(&LRU_list_mutex); + buf_pool_mutex_enter(); ut_a(buf_page_in_file(bpage)); buf_LRU_make_block_young(bpage); - //buf_pool_mutex_exit(); - mutex_exit(&LRU_list_mutex); + buf_pool_mutex_exit(); } /************************************************************************ @@ -1573,8 +1528,7 @@ buf_reset_check_index_page_at_flush( { buf_block_t* block; - //buf_pool_mutex_enter(); - rw_lock_s_lock(&page_hash_latch); + buf_pool_mutex_enter(); block = (buf_block_t*) buf_page_hash_get(space, offset); @@ -1582,8 +1536,7 @@ buf_reset_check_index_page_at_flush( block->check_index_page_at_flush = FALSE; } - //buf_pool_mutex_exit(); - rw_lock_s_unlock(&page_hash_latch); + buf_pool_mutex_exit(); } /************************************************************************ @@ -1602,8 +1555,7 @@ buf_page_peek_if_search_hashed( buf_block_t* block; ibool is_hashed; - //buf_pool_mutex_enter(); - rw_lock_s_lock(&page_hash_latch); + buf_pool_mutex_enter(); block = (buf_block_t*) buf_page_hash_get(space, offset); @@ -1613,8 +1565,7 @@ buf_page_peek_if_search_hashed( is_hashed = block->is_hashed; } - //buf_pool_mutex_exit(); - rw_lock_s_unlock(&page_hash_latch); + buf_pool_mutex_exit(); return(is_hashed); } @@ -1636,8 +1587,7 @@ buf_page_set_file_page_was_freed( { buf_page_t* bpage; - //buf_pool_mutex_enter(); - rw_lock_s_lock(&page_hash_latch); + buf_pool_mutex_enter(); bpage = buf_page_hash_get(space, offset); @@ -1645,8 +1595,7 @@ buf_page_set_file_page_was_freed( bpage->file_page_was_freed = TRUE; } - //buf_pool_mutex_exit(); - rw_lock_s_unlock(&page_hash_latch); + buf_pool_mutex_exit(); return(bpage); } @@ -1667,8 +1616,7 @@ buf_page_reset_file_page_was_freed( { buf_page_t* bpage; - //buf_pool_mutex_enter(); - rw_lock_s_lock(&page_hash_latch); + buf_pool_mutex_enter(); bpage = buf_page_hash_get(space, offset); @@ -1676,8 +1624,7 @@ buf_page_reset_file_page_was_freed( bpage->file_page_was_freed = FALSE; } - //buf_pool_mutex_exit(); - rw_lock_s_unlock(&page_hash_latch); + buf_pool_mutex_exit(); return(bpage); } @@ -1710,9 +1657,8 @@ buf_page_get_zip( buf_pool->n_page_gets++; for (;;) { - //buf_pool_mutex_enter(); + buf_pool_mutex_enter(); lookup: - rw_lock_s_lock(&page_hash_latch); bpage = buf_page_hash_get(space, offset); if (bpage) { break; @@ -1720,8 +1666,7 @@ lookup: /* Page not in buf_pool: needs to be read from file */ - //buf_pool_mutex_exit(); - rw_lock_s_unlock(&page_hash_latch); + buf_pool_mutex_exit(); buf_read_page(space, zip_size, offset); @@ -1732,16 +1677,13 @@ lookup: if (UNIV_UNLIKELY(!bpage->zip.data)) { /* There is no compressed page. */ - //buf_pool_mutex_exit(); - rw_lock_s_unlock(&page_hash_latch); + buf_pool_mutex_exit(); return(NULL); } block_mutex = buf_page_get_mutex(bpage); mutex_enter(block_mutex); - rw_lock_s_unlock(&page_hash_latch); - switch (buf_page_get_state(bpage)) { case BUF_BLOCK_NOT_USED: case BUF_BLOCK_READY_FOR_USE: @@ -1756,7 +1698,7 @@ lookup: break; case BUF_BLOCK_FILE_PAGE: /* Discard the uncompressed page frame if possible. */ - if (buf_LRU_free_block(bpage, FALSE, NULL, FALSE) + if (buf_LRU_free_block(bpage, FALSE, NULL) == BUF_LRU_FREED) { mutex_exit(block_mutex); @@ -1770,7 +1712,7 @@ lookup: must_read = buf_page_get_io_fix(bpage) == BUF_IO_READ; - //buf_pool_mutex_exit(); + buf_pool_mutex_exit(); buf_page_set_accessed(bpage, TRUE); @@ -2001,7 +1943,7 @@ buf_block_is_uncompressed( const buf_chunk_t* chunk = buf_pool->chunks; const buf_chunk_t* const echunk = chunk + buf_pool->n_chunks; - //ut_ad(buf_pool_mutex_own()); + ut_ad(buf_pool_mutex_own()); if (UNIV_UNLIKELY((((ulint) block) % sizeof *block) != 0)) { /* The pointer should be aligned. */ @@ -2044,7 +1986,6 @@ buf_page_get_gen( ibool accessed; ulint fix_type; ibool must_read; - mutex_t* block_mutex; ut_ad(mtr); ut_ad((rw_latch == RW_S_LATCH) @@ -2060,12 +2001,9 @@ buf_page_get_gen( buf_pool->n_page_gets++; loop: block = guess; - //buf_pool_mutex_enter(); + buf_pool_mutex_enter(); if (block) { - block_mutex = buf_page_get_mutex((buf_page_t*)block); - mutex_enter(block_mutex); - /* If the guess is a compressed page descriptor that has been allocated by buf_buddy_alloc(), it may have been invalidated by buf_buddy_relocate(). In that @@ -2079,8 +2017,6 @@ loop: || space != block->page.space || buf_block_get_state(block) != BUF_BLOCK_FILE_PAGE) { - mutex_exit(block_mutex); - block = guess = NULL; } else { ut_ad(!block->page.in_zip_hash); @@ -2089,20 +2025,14 @@ loop: } if (block == NULL) { - rw_lock_s_lock(&page_hash_latch); block = (buf_block_t*) buf_page_hash_get(space, offset); - if (block) { - block_mutex = buf_page_get_mutex((buf_page_t*)block); - mutex_enter(block_mutex); - } - rw_lock_s_unlock(&page_hash_latch); } loop2: if (block == NULL) { /* Page not in buf_pool: needs to be read from file */ - //buf_pool_mutex_exit(); + buf_pool_mutex_exit(); if (mode == BUF_GET_IF_IN_POOL) { @@ -2123,8 +2053,7 @@ loop2: if (must_read && mode == BUF_GET_IF_IN_POOL) { /* The page is only being read to buffer */ - //buf_pool_mutex_exit(); - mutex_exit(block_mutex); + buf_pool_mutex_exit(); return(NULL); } @@ -2134,16 +2063,10 @@ loop2: ibool success; case BUF_BLOCK_FILE_PAGE: - if (block_mutex == &buf_pool_zip_mutex) { - /* it is wrong mutex... */ - mutex_exit(block_mutex); - goto loop; - } break; case BUF_BLOCK_ZIP_PAGE: case BUF_BLOCK_ZIP_DIRTY: - ut_ad(block_mutex == &buf_pool_zip_mutex); bpage = &block->page; if (bpage->buf_fix_count @@ -2154,26 +2077,20 @@ loop2: wait_until_unfixed: /* The block is buffer-fixed or I/O-fixed. Try again later. */ - //buf_pool_mutex_exit(); - mutex_exit(block_mutex); + buf_pool_mutex_exit(); os_thread_sleep(WAIT_FOR_READ); goto loop; } /* Allocate an uncompressed page. */ - //buf_pool_mutex_exit(); - mutex_exit(block_mutex); + buf_pool_mutex_exit(); block = buf_LRU_get_free_block(0); ut_a(block); - block_mutex = &block->mutex; - //buf_pool_mutex_enter(); - mutex_enter(&LRU_list_mutex); - mutex_enter(&flush_list_mutex); - rw_lock_x_lock(&page_hash_latch); - mutex_enter(block_mutex); + buf_pool_mutex_enter(); + mutex_enter(&block->mutex); { buf_page_t* hash_bpage @@ -2184,17 +2101,10 @@ wait_until_unfixed: while buf_pool_mutex was released. Free the block that was allocated. */ - buf_LRU_block_free_non_file_page(block, TRUE); - mutex_exit(block_mutex); + buf_LRU_block_free_non_file_page(block); + mutex_exit(&block->mutex); block = (buf_block_t*) hash_bpage; - if (block) { - block_mutex = buf_page_get_mutex((buf_page_t*)block); - mutex_enter(block_mutex); - } - rw_lock_x_unlock(&page_hash_latch); - mutex_exit(&LRU_list_mutex); - mutex_exit(&flush_list_mutex); goto loop2; } } @@ -2208,12 +2118,9 @@ wait_until_unfixed: Free the block that was allocated and try again. This should be extremely unlikely. */ - buf_LRU_block_free_non_file_page(block, TRUE); - //mutex_exit(&block->mutex); + buf_LRU_block_free_non_file_page(block); + mutex_exit(&block->mutex); - rw_lock_x_unlock(&page_hash_latch); - mutex_exit(&LRU_list_mutex); - mutex_exit(&flush_list_mutex); goto wait_until_unfixed; } @@ -2223,9 +2130,6 @@ wait_until_unfixed: mutex_enter(&buf_pool_zip_mutex); buf_relocate(bpage, &block->page); - - rw_lock_x_unlock(&page_hash_latch); - buf_block_init_low(block); block->lock_hash_val = lock_rec_hash(space, offset); @@ -2257,8 +2161,6 @@ wait_until_unfixed: } } - mutex_exit(&flush_list_mutex); - /* Buffer-fix, I/O-fix, and X-latch the block for the duration of the decompression. Also add the block to the unzip_LRU list. */ @@ -2267,22 +2169,16 @@ wait_until_unfixed: /* Insert at the front of unzip_LRU list */ buf_unzip_LRU_add_block(block, FALSE); - mutex_exit(&LRU_list_mutex); - block->page.buf_fix_count = 1; buf_block_set_io_fix(block, BUF_IO_READ); - - mutex_enter(&buf_pool_mutex); buf_pool->n_pend_unzip++; - mutex_exit(&buf_pool_mutex); - rw_lock_x_lock(&block->lock); - mutex_exit(block_mutex); + mutex_exit(&block->mutex); mutex_exit(&buf_pool_zip_mutex); - buf_buddy_free(bpage, sizeof *bpage, FALSE); + buf_buddy_free(bpage, sizeof *bpage); - //buf_pool_mutex_exit(); + buf_pool_mutex_exit(); /* Decompress the page and apply buffered operations while not holding buf_pool_mutex or block->mutex. */ @@ -2294,21 +2190,17 @@ wait_until_unfixed: } /* Unfix and unlatch the block. */ - //buf_pool_mutex_enter(); - block_mutex = &block->mutex; - mutex_enter(block_mutex); - mutex_enter(&buf_pool_mutex); + buf_pool_mutex_enter(); + mutex_enter(&block->mutex); buf_pool->n_pend_unzip--; - mutex_exit(&buf_pool_mutex); block->page.buf_fix_count--; buf_block_set_io_fix(block, BUF_IO_NONE); - //mutex_exit(&block->mutex); + mutex_exit(&block->mutex); rw_lock_x_unlock(&block->lock); if (UNIV_UNLIKELY(!success)) { - //buf_pool_mutex_exit(); - mutex_exit(block_mutex); + buf_pool_mutex_exit(); return(NULL); } @@ -2325,11 +2217,11 @@ wait_until_unfixed: ut_ad(buf_block_get_state(block) == BUF_BLOCK_FILE_PAGE); - //mutex_enter(&block->mutex); + mutex_enter(&block->mutex); UNIV_MEM_ASSERT_RW(&block->page, sizeof block->page); buf_block_buf_fix_inc(block, file, line); - //buf_pool_mutex_exit(); + buf_pool_mutex_exit(); /* Check if this is the first access to the page */ @@ -2337,7 +2229,7 @@ wait_until_unfixed: buf_page_set_accessed(&block->page, TRUE); - mutex_exit(block_mutex); + mutex_exit(&block->mutex); buf_block_make_young(&block->page); @@ -2623,19 +2515,16 @@ buf_page_try_get_func( ibool success; ulint fix_type; - //buf_pool_mutex_enter(); - rw_lock_s_lock(&page_hash_latch); + buf_pool_mutex_enter(); block = buf_block_hash_get(space_id, page_no); if (!block) { - //buf_pool_mutex_exit(); - rw_lock_s_unlock(&page_hash_latch); + buf_pool_mutex_exit(); return(NULL); } mutex_enter(&block->mutex); - //buf_pool_mutex_exit(); - rw_lock_s_unlock(&page_hash_latch); + buf_pool_mutex_exit(); #if defined UNIV_DEBUG || defined UNIV_BUF_DEBUG ut_a(buf_block_get_state(block) == BUF_BLOCK_FILE_PAGE); @@ -2755,10 +2644,7 @@ buf_page_init( { buf_page_t* hash_page; - //ut_ad(buf_pool_mutex_own()); -#ifdef UNIV_SYNC_DEBUG - ut_ad(rw_lock_own(&page_hash_latch, RW_LOCK_EX)); -#endif + ut_ad(buf_pool_mutex_own()); ut_ad(mutex_own(&(block->mutex))); ut_a(buf_block_get_state(block) != BUF_BLOCK_FILE_PAGE); @@ -2791,8 +2677,7 @@ buf_page_init( (const void*) hash_page, (const void*) block); #if defined UNIV_DEBUG || defined UNIV_BUF_DEBUG mutex_exit(&block->mutex); - //buf_pool_mutex_exit(); - rw_lock_x_unlock(&page_hash_latch); + buf_pool_mutex_exit(); buf_print(); buf_LRU_print(); buf_validate(); @@ -2871,28 +2756,16 @@ buf_page_init_for_read( ut_ad(block); } - //buf_pool_mutex_enter(); - mutex_enter(&LRU_list_mutex); - if(!block) { - mutex_enter(&flush_list_mutex); - } - rw_lock_x_lock(&page_hash_latch); + buf_pool_mutex_enter(); if (buf_page_hash_get(space, offset)) { /* The page is already in the buffer pool. */ err_exit: if (block) { mutex_enter(&block->mutex); - mutex_exit(&LRU_list_mutex); - rw_lock_x_unlock(&page_hash_latch); - buf_LRU_block_free_non_file_page(block, FALSE); + buf_LRU_block_free_non_file_page(block); mutex_exit(&block->mutex); } - else { - mutex_exit(&LRU_list_mutex); - mutex_exit(&flush_list_mutex); - rw_lock_x_unlock(&page_hash_latch); - } bpage = NULL; goto func_exit; @@ -2912,8 +2785,6 @@ err_exit: mutex_enter(&block->mutex); buf_page_init(space, offset, block); - rw_lock_x_unlock(&page_hash_latch); - /* The block must be put to the LRU list, to the old blocks */ buf_LRU_add_block(bpage, TRUE/* to old blocks */); @@ -2941,7 +2812,7 @@ err_exit: been added to buf_pool->LRU and buf_pool->page_hash. */ mutex_exit(&block->mutex); - data = buf_buddy_alloc(zip_size, &lru, FALSE); + data = buf_buddy_alloc(zip_size, &lru); mutex_enter(&block->mutex); block->page.zip.data = data; @@ -2954,7 +2825,6 @@ err_exit: buf_unzip_LRU_add_block(block, TRUE); } - mutex_exit(&LRU_list_mutex); mutex_exit(&block->mutex); } else { /* Defer buf_buddy_alloc() until after the block has @@ -2966,8 +2836,8 @@ err_exit: control block (bpage), in order to avoid the invocation of buf_buddy_relocate_block() on uninitialized data. */ - data = buf_buddy_alloc(zip_size, &lru, TRUE); - bpage = buf_buddy_alloc(sizeof *bpage, &lru, TRUE); + data = buf_buddy_alloc(zip_size, &lru); + bpage = buf_buddy_alloc(sizeof *bpage, &lru); /* If buf_buddy_alloc() allocated storage from the LRU list, it released and reacquired buf_pool_mutex. Thus, we must @@ -2976,12 +2846,8 @@ err_exit: && UNIV_LIKELY_NULL(buf_page_hash_get(space, offset))) { /* The block was added by some other thread. */ - buf_buddy_free(bpage, sizeof *bpage, TRUE); - buf_buddy_free(data, zip_size, TRUE); - - mutex_exit(&LRU_list_mutex); - mutex_exit(&flush_list_mutex); - rw_lock_x_unlock(&page_hash_latch); + buf_buddy_free(bpage, sizeof *bpage); + buf_buddy_free(data, zip_size); bpage = NULL; goto func_exit; @@ -3011,25 +2877,18 @@ err_exit: HASH_INSERT(buf_page_t, hash, buf_pool->page_hash, buf_page_address_fold(space, offset), bpage); - rw_lock_x_unlock(&page_hash_latch); - /* The block must be put to the LRU list, to the old blocks */ buf_LRU_add_block(bpage, TRUE/* to old blocks */); buf_LRU_insert_zip_clean(bpage); - mutex_exit(&LRU_list_mutex); - mutex_exit(&flush_list_mutex); - buf_page_set_io_fix(bpage, BUF_IO_READ); mutex_exit(&buf_pool_zip_mutex); } - mutex_enter(&buf_pool_mutex); buf_pool->n_pend_reads++; - mutex_exit(&buf_pool_mutex); func_exit: - //buf_pool_mutex_exit(); + buf_pool_mutex_exit(); if (mode == BUF_READ_IBUF_PAGES_ONLY) { @@ -3065,9 +2924,7 @@ buf_page_create( free_block = buf_LRU_get_free_block(0); - //buf_pool_mutex_enter(); - mutex_enter(&LRU_list_mutex); - rw_lock_x_lock(&page_hash_latch); + buf_pool_mutex_enter(); block = (buf_block_t*) buf_page_hash_get(space, offset); @@ -3080,9 +2937,7 @@ buf_page_create( #endif /* UNIV_DEBUG_FILE_ACCESSES */ /* Page can be found in buf_pool */ - //buf_pool_mutex_exit(); - mutex_exit(&LRU_list_mutex); - rw_lock_x_unlock(&page_hash_latch); + buf_pool_mutex_exit(); buf_block_free(free_block); @@ -3104,7 +2959,6 @@ buf_page_create( mutex_enter(&block->mutex); buf_page_init(space, offset, block); - rw_lock_x_unlock(&page_hash_latch); /* The block must be put to the LRU list */ buf_LRU_add_block(&block->page, FALSE); @@ -3131,7 +2985,7 @@ buf_page_create( the reacquisition of buf_pool_mutex. We also must defer this operation until after the block descriptor has been added to buf_pool->LRU and buf_pool->page_hash. */ - data = buf_buddy_alloc(zip_size, &lru, FALSE); + data = buf_buddy_alloc(zip_size, &lru); mutex_enter(&block->mutex); block->page.zip.data = data; @@ -3147,8 +3001,7 @@ buf_page_create( rw_lock_x_unlock(&block->lock); } - //buf_pool_mutex_exit(); - mutex_exit(&LRU_list_mutex); + buf_pool_mutex_exit(); mtr_memo_push(mtr, block, MTR_MEMO_BUF_FIX); @@ -3200,7 +3053,6 @@ buf_page_io_complete( enum buf_io_fix io_type; const ibool uncompressed = (buf_page_get_state(bpage) == BUF_BLOCK_FILE_PAGE); - enum buf_flush flush_type; ut_a(buf_page_in_file(bpage)); @@ -3335,17 +3187,8 @@ corrupt: } } - //buf_pool_mutex_enter(); - if (io_type == BUF_IO_WRITE) { - flush_type = buf_page_get_flush_type(bpage); - /* to keep consistency at buf_LRU_insert_zip_clean() */ - //if (flush_type == BUF_FLUSH_LRU) { /* optimistic! */ - mutex_enter(&LRU_list_mutex); - //} - mutex_enter(&flush_list_mutex); - } + buf_pool_mutex_enter(); mutex_enter(buf_page_get_mutex(bpage)); - mutex_enter(&buf_pool_mutex); #ifdef UNIV_IBUF_COUNT_DEBUG if (io_type == BUF_IO_WRITE || uncompressed) { @@ -3385,12 +3228,6 @@ corrupt: buf_flush_write_complete(bpage); - mutex_exit(&flush_list_mutex); - /* to keep consistency at buf_LRU_insert_zip_clean() */ - //if (flush_type == BUF_FLUSH_LRU) { /* optimistic! */ - mutex_exit(&LRU_list_mutex); - //} - if (uncompressed) { rw_lock_s_unlock_gen(&((buf_block_t*) bpage)->lock, BUF_IO_WRITE); @@ -3413,9 +3250,8 @@ corrupt: } #endif /* UNIV_DEBUG */ - mutex_exit(&buf_pool_mutex); mutex_exit(buf_page_get_mutex(bpage)); - //buf_pool_mutex_exit(); + buf_pool_mutex_exit(); } /************************************************************************* @@ -3437,14 +3273,12 @@ buf_pool_invalidate(void) freed = buf_LRU_search_and_free_block(100); } - //buf_pool_mutex_enter(); - mutex_enter(&LRU_list_mutex); + buf_pool_mutex_enter(); ut_ad(UT_LIST_GET_LEN(buf_pool->LRU) == 0); ut_ad(UT_LIST_GET_LEN(buf_pool->unzip_LRU) == 0); - //buf_pool_mutex_exit(); - mutex_exit(&LRU_list_mutex); + buf_pool_mutex_exit(); } #if defined UNIV_DEBUG || defined UNIV_BUF_DEBUG @@ -3468,11 +3302,7 @@ buf_validate(void) ut_ad(buf_pool); - //buf_pool_mutex_enter(); - mutex_enter(&LRU_list_mutex); - mutex_enter(&flush_list_mutex); - rw_lock_x_lock(&page_hash_latch); - /* for keep the new latch order, it cannot validate correctly... */ + buf_pool_mutex_enter(); chunk = buf_pool->chunks; @@ -3653,25 +3483,19 @@ buf_validate(void) } ut_a(UT_LIST_GET_LEN(buf_pool->LRU) == n_lru); - /* because of latching order, we cannot get free_list_mutex here. */ -/* if (UT_LIST_GET_LEN(buf_pool->free) != n_free) { fprintf(stderr, "Free list len %lu, free blocks %lu\n", (ulong) UT_LIST_GET_LEN(buf_pool->free), (ulong) n_free); ut_error; } -*/ ut_a(UT_LIST_GET_LEN(buf_pool->flush_list) == n_flush); ut_a(buf_pool->n_flush[BUF_FLUSH_SINGLE_PAGE] == n_single_flush); ut_a(buf_pool->n_flush[BUF_FLUSH_LIST] == n_list_flush); ut_a(buf_pool->n_flush[BUF_FLUSH_LRU] == n_lru_flush); - //buf_pool_mutex_exit(); - mutex_exit(&LRU_list_mutex); - mutex_exit(&flush_list_mutex); - rw_lock_x_unlock(&page_hash_latch); + buf_pool_mutex_exit(); ut_a(buf_LRU_validate()); ut_a(buf_flush_validate()); @@ -3705,10 +3529,7 @@ buf_print(void) index_ids = mem_alloc(sizeof(dulint) * size); counts = mem_alloc(sizeof(ulint) * size); - //buf_pool_mutex_enter(); - mutex_enter(&LRU_list_mutex); - mutex_enter(&flush_list_mutex); - mutex_enter(&free_list_mutex); + buf_pool_mutex_enter(); fprintf(stderr, "buf_pool size %lu\n" @@ -3771,10 +3592,7 @@ buf_print(void) } } - //buf_pool_mutex_exit(); - mutex_exit(&LRU_list_mutex); - mutex_exit(&flush_list_mutex); - mutex_exit(&free_list_mutex); + buf_pool_mutex_exit(); for (i = 0; i < n_found; i++) { index = dict_index_get_if_in_cache(index_ids[i]); @@ -3812,7 +3630,7 @@ buf_get_latched_pages_number(void) ulint i; ulint fixed_pages_number = 0; - //buf_pool_mutex_enter(); + buf_pool_mutex_enter(); chunk = buf_pool->chunks; @@ -3882,7 +3700,7 @@ buf_get_latched_pages_number(void) } mutex_exit(&buf_pool_zip_mutex); - //buf_pool_mutex_exit(); + buf_pool_mutex_exit(); return(fixed_pages_number); } @@ -3939,11 +3757,7 @@ buf_print_io( ut_ad(buf_pool); size = buf_pool->curr_size; - //buf_pool_mutex_enter(); - mutex_enter(&LRU_list_mutex); - mutex_enter(&flush_list_mutex); - mutex_enter(&free_list_mutex); - mutex_enter(&buf_pool_mutex); + buf_pool_mutex_enter(); fprintf(file, "Buffer pool size %lu\n" @@ -4010,11 +3824,7 @@ buf_print_io( buf_LRU_stat_sum.io, buf_LRU_stat_cur.io, buf_LRU_stat_sum.unzip, buf_LRU_stat_cur.unzip); - //buf_pool_mutex_exit(); - mutex_exit(&LRU_list_mutex); - mutex_exit(&flush_list_mutex); - mutex_exit(&free_list_mutex); - mutex_exit(&buf_pool_mutex); + buf_pool_mutex_exit(); } /************************************************************************** @@ -4043,7 +3853,7 @@ buf_all_freed(void) ut_ad(buf_pool); - //buf_pool_mutex_enter(); /* optimistic */ + buf_pool_mutex_enter(); chunk = buf_pool->chunks; @@ -4060,7 +3870,7 @@ buf_all_freed(void) } } - //buf_pool_mutex_exit(); /* optimistic */ + buf_pool_mutex_exit(); return(TRUE); } @@ -4076,8 +3886,7 @@ buf_pool_check_no_pending_io(void) { ibool ret; - //buf_pool_mutex_enter(); - mutex_enter(&buf_pool_mutex); + buf_pool_mutex_enter(); if (buf_pool->n_pend_reads + buf_pool->n_flush[BUF_FLUSH_LRU] + buf_pool->n_flush[BUF_FLUSH_LIST] @@ -4087,8 +3896,7 @@ buf_pool_check_no_pending_io(void) ret = TRUE; } - //buf_pool_mutex_exit(); - mutex_exit(&buf_pool_mutex); + buf_pool_mutex_exit(); return(ret); } @@ -4102,13 +3910,11 @@ buf_get_free_list_len(void) { ulint len; - //buf_pool_mutex_enter(); - mutex_enter(&free_list_mutex); + buf_pool_mutex_enter(); len = UT_LIST_GET_LEN(buf_pool->free); - //buf_pool_mutex_exit(); - mutex_exit(&free_list_mutex); + buf_pool_mutex_exit(); return(len); } === modified file 'storage/xtradb/buf/buf0flu.c' --- a/storage/xtradb/buf/buf0flu.c 2009-03-26 06:11:11 +0000 +++ b/storage/xtradb/buf/buf0flu.c 2009-05-04 04:32:30 +0000 @@ -61,8 +61,7 @@ buf_flush_insert_into_flush_list( /*=============================*/ buf_block_t* block) /* in/out: block which is modified */ { - //ut_ad(buf_pool_mutex_own()); - ut_ad(mutex_own(&flush_list_mutex)); + ut_ad(buf_pool_mutex_own()); ut_ad((UT_LIST_GET_FIRST(buf_pool->flush_list) == NULL) || (UT_LIST_GET_FIRST(buf_pool->flush_list)->oldest_modification <= block->page.oldest_modification)); @@ -93,8 +92,7 @@ buf_flush_insert_sorted_into_flush_list( buf_page_t* prev_b; buf_page_t* b; - //ut_ad(buf_pool_mutex_own()); - ut_ad(mutex_own(&flush_list_mutex)); + ut_ad(buf_pool_mutex_own()); ut_ad(buf_block_get_state(block) == BUF_BLOCK_FILE_PAGE); ut_ad(block->page.in_LRU_list); @@ -137,7 +135,7 @@ buf_flush_ready_for_replace( { //ut_ad(buf_pool_mutex_own()); //ut_ad(mutex_own(buf_page_get_mutex(bpage))); - //ut_ad(bpage->in_LRU_list); + //ut_ad(bpage->in_LRU_list); /* optimistic use */ if (UNIV_LIKELY(bpage->in_LRU_list && buf_page_in_file(bpage))) { @@ -172,7 +170,7 @@ buf_flush_ready_for_flush( enum buf_flush flush_type)/* in: BUF_FLUSH_LRU or BUF_FLUSH_LIST */ { ut_a(buf_page_in_file(bpage)); - //ut_ad(buf_pool_mutex_own()); /*optimistic...*/ + ut_ad(buf_pool_mutex_own()); ut_ad(mutex_own(buf_page_get_mutex(bpage))); ut_ad(flush_type == BUF_FLUSH_LRU || BUF_FLUSH_LIST); @@ -205,8 +203,7 @@ buf_flush_remove( /*=============*/ buf_page_t* bpage) /* in: pointer to the block in question */ { - //ut_ad(buf_pool_mutex_own()); - ut_ad(mutex_own(&flush_list_mutex)); + ut_ad(buf_pool_mutex_own()); ut_ad(mutex_own(buf_page_get_mutex(bpage))); ut_ad(bpage->in_flush_list); ut_d(bpage->in_flush_list = FALSE); @@ -765,19 +762,12 @@ buf_flush_page( ibool is_uncompressed; ut_ad(flush_type == BUF_FLUSH_LRU || flush_type == BUF_FLUSH_LIST); - //ut_ad(buf_pool_mutex_own()); -#ifdef UNIV_SYNC_DEBUG - ut_ad(rw_lock_own(&page_hash_latch, RW_LOCK_EX) - || rw_lock_own(&page_hash_latch, RW_LOCK_SHARED)); -#endif + ut_ad(buf_pool_mutex_own()); ut_ad(buf_page_in_file(bpage)); block_mutex = buf_page_get_mutex(bpage); ut_ad(mutex_own(block_mutex)); - mutex_enter(&buf_pool_mutex); - rw_lock_s_unlock(&page_hash_latch); - ut_ad(buf_flush_ready_for_flush(bpage, flush_type)); buf_page_set_io_fix(bpage, BUF_IO_WRITE); @@ -808,8 +798,7 @@ buf_flush_page( } mutex_exit(block_mutex); - //buf_pool_mutex_exit(); - mutex_exit(&buf_pool_mutex); + buf_pool_mutex_exit(); /* Even though bpage is not protected by any mutex at this point, it is safe to access bpage, because it is @@ -846,8 +835,7 @@ buf_flush_page( immediately. */ mutex_exit(block_mutex); - //buf_pool_mutex_exit(); - mutex_exit(&buf_pool_mutex); + buf_pool_mutex_exit(); break; default: @@ -911,8 +899,7 @@ buf_flush_try_neighbors( high = fil_space_get_size(space); } - //buf_pool_mutex_enter(); - rw_lock_s_lock(&page_hash_latch); + buf_pool_mutex_enter(); for (i = low; i < high; i++) { @@ -949,16 +936,14 @@ buf_flush_try_neighbors( ut_ad(!mutex_own(block_mutex)); count++; - //buf_pool_mutex_enter(); - rw_lock_s_lock(&page_hash_latch); + buf_pool_mutex_enter(); } else { mutex_exit(block_mutex); } } } - //buf_pool_mutex_exit(); - rw_lock_s_unlock(&page_hash_latch); + buf_pool_mutex_exit(); return(count); } @@ -1002,29 +987,20 @@ buf_flush_batch( ut_ad((flush_type != BUF_FLUSH_LIST) || sync_thread_levels_empty_gen(TRUE)); #endif /* UNIV_SYNC_DEBUG */ - //buf_pool_mutex_enter(); - mutex_enter(&buf_pool_mutex); + buf_pool_mutex_enter(); if ((buf_pool->n_flush[flush_type] > 0) || (buf_pool->init_flush[flush_type] == TRUE)) { /* There is already a flush batch of the same type running */ - //buf_pool_mutex_exit(); - mutex_exit(&buf_pool_mutex); + buf_pool_mutex_exit(); return(ULINT_UNDEFINED); } buf_pool->init_flush[flush_type] = TRUE; - mutex_exit(&buf_pool_mutex); - - if (flush_type == BUF_FLUSH_LRU) { - mutex_enter(&LRU_list_mutex); - } - mutex_enter(&flush_list_mutex); - for (;;) { flush_next: /* If we have flushed enough, leave the loop */ @@ -1071,11 +1047,7 @@ flush_next: space = buf_page_get_space(bpage); offset = buf_page_get_page_no(bpage); - //buf_pool_mutex_exit(); - if (flush_type == BUF_FLUSH_LRU) { - mutex_exit(&LRU_list_mutex); - } - mutex_exit(&flush_list_mutex); + buf_pool_mutex_exit(); old_page_count = page_count; @@ -1085,8 +1057,7 @@ flush_next: space, offset, flush_type); } else { /* Try to flush the page only */ - //buf_pool_mutex_enter(); - rw_lock_s_lock(&page_hash_latch); + buf_pool_mutex_enter(); mutex_t* block_mutex = buf_page_get_mutex(bpage); mutex_enter(block_mutex); @@ -1102,11 +1073,7 @@ flush_next: flush_type, offset, page_count - old_page_count); */ - //buf_pool_mutex_enter(); - if (flush_type == BUF_FLUSH_LRU) { - mutex_enter(&LRU_list_mutex); - } - mutex_enter(&flush_list_mutex); + buf_pool_mutex_enter(); goto flush_next; } else if (flush_type == BUF_FLUSH_LRU) { @@ -1124,13 +1091,6 @@ flush_next: break; } - if (flush_type == BUF_FLUSH_LRU) { - mutex_exit(&LRU_list_mutex); - } - mutex_exit(&flush_list_mutex); - - mutex_enter(&buf_pool_mutex); - buf_pool->init_flush[flush_type] = FALSE; if (buf_pool->n_flush[flush_type] == 0) { @@ -1140,8 +1100,7 @@ flush_next: os_event_set(buf_pool->no_flush[flush_type]); } - //buf_pool_mutex_exit(); - mutex_exit(&buf_pool_mutex); + buf_pool_mutex_exit(); buf_flush_buffered_writes(); @@ -1195,7 +1154,7 @@ buf_flush_LRU_recommendation(void) //buf_pool_mutex_enter(); if (have_LRU_mutex) - mutex_enter(&LRU_list_mutex); + buf_pool_mutex_enter(); n_replaceable = UT_LIST_GET_LEN(buf_pool->free); @@ -1229,7 +1188,7 @@ buf_flush_LRU_recommendation(void) //buf_pool_mutex_exit(); if (have_LRU_mutex) - mutex_exit(&LRU_list_mutex); + buf_pool_mutex_exit(); if (n_replaceable >= BUF_FLUSH_FREE_BLOCK_MARGIN) { @@ -1307,13 +1266,11 @@ buf_flush_validate(void) { ibool ret; - //buf_pool_mutex_enter(); - mutex_enter(&flush_list_mutex); + buf_pool_mutex_enter(); ret = buf_flush_validate_low(); - //buf_pool_mutex_exit(); - mutex_exit(&flush_list_mutex); + buf_pool_mutex_exit(); return(ret); } === modified file 'storage/xtradb/buf/buf0lru.c' --- a/storage/xtradb/buf/buf0lru.c 2009-03-26 06:11:11 +0000 +++ b/storage/xtradb/buf/buf0lru.c 2009-05-04 04:32:30 +0000 @@ -129,31 +129,25 @@ static void buf_LRU_block_free_hashed_page( /*===========================*/ - buf_block_t* block, /* in: block, must contain a file page and + buf_block_t* block); /* in: block, must contain a file page and be in a state where it can be freed */ - ibool have_page_hash_mutex); /********************************************************************** Determines if the unzip_LRU list should be used for evicting a victim instead of the general LRU list. */ UNIV_INLINE ibool -buf_LRU_evict_from_unzip_LRU( - ibool have_LRU_mutex) +buf_LRU_evict_from_unzip_LRU(void) /*==============================*/ /* out: TRUE if should use unzip_LRU */ { ulint io_avg; ulint unzip_avg; - //ut_ad(buf_pool_mutex_own()); + ut_ad(buf_pool_mutex_own()); - if (!have_LRU_mutex) - mutex_enter(&LRU_list_mutex); /* If the unzip_LRU list is empty, we can only use the LRU. */ if (UT_LIST_GET_LEN(buf_pool->unzip_LRU) == 0) { - if (!have_LRU_mutex) - mutex_exit(&LRU_list_mutex); return(FALSE); } @@ -162,20 +156,14 @@ buf_LRU_evict_from_unzip_LRU( decompressed pages in the buffer pool. */ if (UT_LIST_GET_LEN(buf_pool->unzip_LRU) <= UT_LIST_GET_LEN(buf_pool->LRU) / 10) { - if (!have_LRU_mutex) - mutex_exit(&LRU_list_mutex); return(FALSE); } /* If eviction hasn't started yet, we assume by default that a workload is disk bound. */ if (buf_pool->freed_page_clock == 0) { - if (!have_LRU_mutex) - mutex_exit(&LRU_list_mutex); return(TRUE); } - if (!have_LRU_mutex) - mutex_exit(&LRU_list_mutex); /* Calculate the average over past intervals, and add the values of the current interval. */ @@ -241,8 +229,7 @@ buf_LRU_drop_page_hash_for_tablespace( page_arr = ut_malloc(sizeof(ulint) * BUF_LRU_DROP_SEARCH_HASH_SIZE); - //buf_pool_mutex_enter(); - mutex_enter(&LRU_list_mutex); + buf_pool_mutex_enter(); scan_again: num_entries = 0; @@ -282,14 +269,12 @@ scan_again: } /* Array full. We release the buf_pool_mutex to obey the latching order. */ - //buf_pool_mutex_exit(); - mutex_exit(&LRU_list_mutex); + buf_pool_mutex_exit(); buf_LRU_drop_page_hash_batch(id, zip_size, page_arr, num_entries); num_entries = 0; - //buf_pool_mutex_enter(); - mutex_enter(&LRU_list_mutex); + buf_pool_mutex_enter(); } else { mutex_exit(block_mutex); } @@ -314,8 +299,7 @@ next_page: } } - //buf_pool_mutex_exit(); - mutex_exit(&LRU_list_mutex); + buf_pool_mutex_exit(); /* Drop any remaining batch of search hashed pages. */ buf_LRU_drop_page_hash_batch(id, zip_size, page_arr, num_entries); @@ -343,10 +327,7 @@ buf_LRU_invalidate_tablespace( buf_LRU_drop_page_hash_for_tablespace(id); scan_again: - //buf_pool_mutex_enter(); - mutex_enter(&LRU_list_mutex); - mutex_enter(&flush_list_mutex); - rw_lock_x_lock(&page_hash_latch); + buf_pool_mutex_enter(); all_freed = TRUE; @@ -388,10 +369,7 @@ scan_again: ulint page_no; ulint zip_size; - //buf_pool_mutex_exit(); - mutex_exit(&LRU_list_mutex); - mutex_exit(&flush_list_mutex); - rw_lock_x_unlock(&page_hash_latch); + buf_pool_mutex_exit(); zip_size = buf_page_get_zip_size(bpage); page_no = buf_page_get_page_no(bpage); @@ -415,7 +393,7 @@ scan_again: if (buf_LRU_block_remove_hashed_page(bpage, TRUE) != BUF_BLOCK_ZIP_FREE) { buf_LRU_block_free_hashed_page((buf_block_t*) - bpage, TRUE); + bpage); } else { /* The block_mutex should have been released by buf_LRU_block_remove_hashed_page() @@ -438,10 +416,7 @@ next_page: bpage = prev_bpage; } - //buf_pool_mutex_exit(); - mutex_exit(&LRU_list_mutex); - mutex_exit(&flush_list_mutex); - rw_lock_x_unlock(&page_hash_latch); + buf_pool_mutex_exit(); if (!all_freed) { os_thread_sleep(20000); @@ -464,16 +439,14 @@ buf_LRU_get_recent_limit(void) ulint len; ulint limit; - //buf_pool_mutex_enter(); - mutex_enter(&LRU_list_mutex); + buf_pool_mutex_enter(); len = UT_LIST_GET_LEN(buf_pool->LRU); if (len < BUF_LRU_OLD_MIN_LEN) { /* The LRU list is too short to do read-ahead */ - //buf_pool_mutex_exit(); - mutex_exit(&LRU_list_mutex); + buf_pool_mutex_exit(); return(0); } @@ -482,8 +455,7 @@ buf_LRU_get_recent_limit(void) limit = buf_page_get_LRU_position(bpage) - len / BUF_LRU_INITIAL_RATIO; - //buf_pool_mutex_exit(); - mutex_exit(&LRU_list_mutex); + buf_pool_mutex_exit(); return(limit); } @@ -498,8 +470,7 @@ buf_LRU_insert_zip_clean( { buf_page_t* b; - //ut_ad(buf_pool_mutex_own()); - ut_ad(mutex_own(&flush_list_mutex)); + ut_ad(buf_pool_mutex_own()); ut_ad(buf_page_get_state(bpage) == BUF_BLOCK_ZIP_PAGE); /* Find the first successor of bpage in the LRU list @@ -507,7 +478,7 @@ buf_LRU_insert_zip_clean( b = bpage; do { b = UT_LIST_GET_NEXT(LRU, b); - } while (b && (buf_page_get_state(b) != BUF_BLOCK_ZIP_PAGE || !b->in_LRU_list)); + } while (b && buf_page_get_state(b) != BUF_BLOCK_ZIP_PAGE); /* Insert bpage before b, i.e., after the predecessor of b. */ if (b) { @@ -529,17 +500,16 @@ ibool buf_LRU_free_from_unzip_LRU_list( /*=============================*/ /* out: TRUE if freed */ - ulint n_iterations, /* in: how many times this has been called + ulint n_iterations) /* in: how many times this has been called repeatedly without result: a high value means that we should search farther; we will search n_iterations / 5 of the unzip_LRU list, or nothing if n_iterations >= 5 */ - ibool have_LRU_mutex) { buf_block_t* block; ulint distance; - //ut_ad(buf_pool_mutex_own()); /* optimistic */ + ut_ad(buf_pool_mutex_own()); /* Theoratically it should be much easier to find a victim from unzip_LRU as we can choose even a dirty block (as we'll @@ -549,7 +519,7 @@ buf_LRU_free_from_unzip_LRU_list( if we have done five iterations so far. */ if (UNIV_UNLIKELY(n_iterations >= 5) - || !buf_LRU_evict_from_unzip_LRU(have_LRU_mutex)) { + || !buf_LRU_evict_from_unzip_LRU()) { return(FALSE); } @@ -557,23 +527,18 @@ buf_LRU_free_from_unzip_LRU_list( distance = 100 + (n_iterations * UT_LIST_GET_LEN(buf_pool->unzip_LRU)) / 5; -restart: for (block = UT_LIST_GET_LAST(buf_pool->unzip_LRU); UNIV_LIKELY(block != NULL) && UNIV_LIKELY(distance > 0); block = UT_LIST_GET_PREV(unzip_LRU, block), distance--) { - if (!block->in_unzip_LRU_list || !block->page.in_LRU_list - || buf_block_get_state(block) != BUF_BLOCK_FILE_PAGE) - goto restart; enum buf_lru_free_block_status freed; - /* optimistic */ - //ut_ad(buf_block_get_state(block) == BUF_BLOCK_FILE_PAGE); - //ut_ad(block->in_unzip_LRU_list); - //ut_ad(block->page.in_LRU_list); + ut_ad(buf_block_get_state(block) == BUF_BLOCK_FILE_PAGE); + ut_ad(block->in_unzip_LRU_list); + ut_ad(block->page.in_LRU_list); mutex_enter(&block->mutex); - freed = buf_LRU_free_block(&block->page, FALSE, NULL, have_LRU_mutex); + freed = buf_LRU_free_block(&block->page, FALSE, NULL); mutex_exit(&block->mutex); switch (freed) { @@ -606,39 +571,33 @@ ibool buf_LRU_free_from_common_LRU_list( /*==============================*/ /* out: TRUE if freed */ - ulint n_iterations, /* in: how many times this has been called + ulint n_iterations) /* in: how many times this has been called repeatedly without result: a high value means that we should search farther; if n_iterations < 10, then we search n_iterations / 10 * buf_pool->curr_size pages from the end of the LRU list */ - ibool have_LRU_mutex) { buf_page_t* bpage; ulint distance; - //ut_ad(buf_pool_mutex_own()); /* optimistic */ + ut_ad(buf_pool_mutex_own()); distance = 100 + (n_iterations * buf_pool->curr_size) / 10; -restart: for (bpage = UT_LIST_GET_LAST(buf_pool->LRU); UNIV_LIKELY(bpage != NULL) && UNIV_LIKELY(distance > 0); bpage = UT_LIST_GET_PREV(LRU, bpage), distance--) { - if (!bpage->in_LRU_list - || buf_page_get_state(bpage) == BUF_BLOCK_ZIP_FREE) - goto restart; enum buf_lru_free_block_status freed; mutex_t* block_mutex = buf_page_get_mutex(bpage); - /* optimistic */ - //ut_ad(buf_page_in_file(bpage)); - //ut_ad(bpage->in_LRU_list); + ut_ad(buf_page_in_file(bpage)); + ut_ad(bpage->in_LRU_list); mutex_enter(block_mutex); - freed = buf_LRU_free_block(bpage, TRUE, NULL, have_LRU_mutex); + freed = buf_LRU_free_block(bpage, TRUE, NULL); mutex_exit(block_mutex); switch (freed) { @@ -681,33 +640,22 @@ buf_LRU_search_and_free_block( n_iterations / 5 of the unzip_LRU list. */ { ibool freed = FALSE; - ibool have_LRU_mutex = FALSE; - - if (UT_LIST_GET_LEN(buf_pool->unzip_LRU)) - have_LRU_mutex = TRUE; - /* optimistic search... */ - //buf_pool_mutex_enter(); - if (have_LRU_mutex) - mutex_enter(&LRU_list_mutex); + buf_pool_mutex_enter(); - freed = buf_LRU_free_from_unzip_LRU_list(n_iterations, have_LRU_mutex); + freed = buf_LRU_free_from_unzip_LRU_list(n_iterations); if (!freed) { - freed = buf_LRU_free_from_common_LRU_list(n_iterations, have_LRU_mutex); + freed = buf_LRU_free_from_common_LRU_list(n_iterations); } - mutex_enter(&buf_pool_mutex); if (!freed) { buf_pool->LRU_flush_ended = 0; } else if (buf_pool->LRU_flush_ended > 0) { buf_pool->LRU_flush_ended--; } - mutex_exit(&buf_pool_mutex); - //buf_pool_mutex_exit(); - if (have_LRU_mutex) - mutex_exit(&LRU_list_mutex); + buf_pool_mutex_exit(); return(freed); } @@ -725,22 +673,18 @@ void buf_LRU_try_free_flushed_blocks(void) /*=================================*/ { - //buf_pool_mutex_enter(); - mutex_enter(&buf_pool_mutex); + buf_pool_mutex_enter(); while (buf_pool->LRU_flush_ended > 0) { - //buf_pool_mutex_exit(); - mutex_exit(&buf_pool_mutex); + buf_pool_mutex_exit(); buf_LRU_search_and_free_block(1); - //buf_pool_mutex_enter(); - mutex_enter(&buf_pool_mutex); + buf_pool_mutex_enter(); } - //buf_pool_mutex_exit(); - mutex_exit(&buf_pool_mutex); + buf_pool_mutex_exit(); } /********************************************************************** @@ -756,9 +700,7 @@ buf_LRU_buf_pool_running_out(void) { ibool ret = FALSE; - //buf_pool_mutex_enter(); - mutex_enter(&LRU_list_mutex); - mutex_enter(&free_list_mutex); + buf_pool_mutex_enter(); if (!recv_recovery_on && UT_LIST_GET_LEN(buf_pool->free) + UT_LIST_GET_LEN(buf_pool->LRU) < buf_pool->curr_size / 4) { @@ -766,9 +708,7 @@ buf_LRU_buf_pool_running_out(void) ret = TRUE; } - //buf_pool_mutex_exit(); - mutex_exit(&LRU_list_mutex); - mutex_exit(&free_list_mutex); + buf_pool_mutex_exit(); return(ret); } @@ -785,10 +725,9 @@ buf_LRU_get_free_only(void) { buf_block_t* block; - //ut_ad(buf_pool_mutex_own()); + ut_ad(buf_pool_mutex_own()); - mutex_enter(&free_list_mutex); - block = (buf_block_t*) UT_LIST_GET_LAST(buf_pool->free); + block = (buf_block_t*) UT_LIST_GET_FIRST(buf_pool->free); if (block) { ut_ad(block->page.in_free_list); @@ -798,16 +737,12 @@ buf_LRU_get_free_only(void) ut_a(!buf_page_in_file(&block->page)); UT_LIST_REMOVE(list, buf_pool->free, (&block->page)); - mutex_exit(&free_list_mutex); - mutex_enter(&block->mutex); buf_block_set_state(block, BUF_BLOCK_READY_FOR_USE); UNIV_MEM_ALLOC(block->frame, UNIV_PAGE_SIZE); mutex_exit(&block->mutex); - } else { - mutex_exit(&free_list_mutex); } return(block); @@ -832,7 +767,7 @@ buf_LRU_get_free_block( ibool mon_value_was = FALSE; ibool started_monitor = FALSE; loop: - //buf_pool_mutex_enter(); + buf_pool_mutex_enter(); if (!recv_recovery_on && UT_LIST_GET_LEN(buf_pool->free) + UT_LIST_GET_LEN(buf_pool->LRU) < buf_pool->curr_size / 20) { @@ -912,16 +847,14 @@ loop: if (UNIV_UNLIKELY(zip_size)) { ibool lru; page_zip_set_size(&block->page.zip, zip_size); - mutex_enter(&LRU_list_mutex); - block->page.zip.data = buf_buddy_alloc(zip_size, &lru, FALSE); - mutex_exit(&LRU_list_mutex); + block->page.zip.data = buf_buddy_alloc(zip_size, &lru); UNIV_MEM_DESC(block->page.zip.data, zip_size, block); } else { page_zip_set_size(&block->page.zip, 0); block->page.zip.data = NULL; } - //buf_pool_mutex_exit(); + buf_pool_mutex_exit(); if (started_monitor) { srv_print_innodb_monitor = mon_value_was; @@ -933,7 +866,7 @@ loop: /* If no block was in the free list, search from the end of the LRU list and try to free a block there */ - //buf_pool_mutex_exit(); + buf_pool_mutex_exit(); freed = buf_LRU_search_and_free_block(n_iterations); @@ -982,21 +915,18 @@ loop: os_aio_simulated_wake_handler_threads(); - //buf_pool_mutex_enter(); - mutex_enter(&buf_pool_mutex); + buf_pool_mutex_enter(); if (buf_pool->LRU_flush_ended > 0) { /* We have written pages in an LRU flush. To make the insert buffer more efficient, we try to move these pages to the free list. */ - //buf_pool_mutex_exit(); - mutex_exit(&buf_pool_mutex); + buf_pool_mutex_exit(); buf_LRU_try_free_flushed_blocks(); } else { - //buf_pool_mutex_exit(); - mutex_exit(&buf_pool_mutex); + buf_pool_mutex_exit(); } if (n_iterations > 10) { @@ -1021,8 +951,7 @@ buf_LRU_old_adjust_len(void) ulint new_len; ut_a(buf_pool->LRU_old); - //ut_ad(buf_pool_mutex_own()); - ut_ad(mutex_own(&LRU_list_mutex)); + ut_ad(buf_pool_mutex_own()); #if 3 * (BUF_LRU_OLD_MIN_LEN / 8) <= BUF_LRU_OLD_TOLERANCE + 5 # error "3 * (BUF_LRU_OLD_MIN_LEN / 8) <= BUF_LRU_OLD_TOLERANCE + 5" #endif @@ -1080,8 +1009,7 @@ buf_LRU_old_init(void) { buf_page_t* bpage; - //ut_ad(buf_pool_mutex_own()); - ut_ad(mutex_own(&LRU_list_mutex)); + ut_ad(buf_pool_mutex_own()); ut_a(UT_LIST_GET_LEN(buf_pool->LRU) == BUF_LRU_OLD_MIN_LEN); /* We first initialize all blocks in the LRU list as old and then use @@ -1113,14 +1041,13 @@ buf_unzip_LRU_remove_block_if_needed( ut_ad(buf_pool); ut_ad(bpage); ut_ad(buf_page_in_file(bpage)); - //ut_ad(buf_pool_mutex_own()); - ut_ad(mutex_own(&LRU_list_mutex)); + ut_ad(buf_pool_mutex_own()); if (buf_page_belongs_to_unzip_LRU(bpage)) { buf_block_t* block = (buf_block_t*) bpage; ut_ad(block->in_unzip_LRU_list); - block->in_unzip_LRU_list = FALSE; + ut_d(block->in_unzip_LRU_list = FALSE); UT_LIST_REMOVE(unzip_LRU, buf_pool->unzip_LRU, block); } @@ -1136,8 +1063,7 @@ buf_LRU_remove_block( { ut_ad(buf_pool); ut_ad(bpage); - //ut_ad(buf_pool_mutex_own()); - ut_ad(mutex_own(&LRU_list_mutex)); + ut_ad(buf_pool_mutex_own()); ut_a(buf_page_in_file(bpage)); @@ -1200,13 +1126,12 @@ buf_unzip_LRU_add_block( { ut_ad(buf_pool); ut_ad(block); - //ut_ad(buf_pool_mutex_own()); - ut_ad(mutex_own(&LRU_list_mutex)); + ut_ad(buf_pool_mutex_own()); ut_a(buf_page_belongs_to_unzip_LRU(&block->page)); ut_ad(!block->in_unzip_LRU_list); - block->in_unzip_LRU_list = TRUE; + ut_d(block->in_unzip_LRU_list = TRUE); if (old) { UT_LIST_ADD_LAST(unzip_LRU, buf_pool->unzip_LRU, block); @@ -1227,8 +1152,7 @@ buf_LRU_add_block_to_end_low( ut_ad(buf_pool); ut_ad(bpage); - //ut_ad(buf_pool_mutex_own()); - ut_ad(mutex_own(&LRU_list_mutex)); + ut_ad(buf_pool_mutex_own()); ut_a(buf_page_in_file(bpage)); @@ -1288,8 +1212,7 @@ buf_LRU_add_block_low( { ut_ad(buf_pool); ut_ad(bpage); - //ut_ad(buf_pool_mutex_own()); - ut_ad(mutex_own(&LRU_list_mutex)); + ut_ad(buf_pool_mutex_own()); ut_a(buf_page_in_file(bpage)); ut_ad(!bpage->in_LRU_list); @@ -1408,24 +1331,22 @@ buf_LRU_free_block( buf_page_t* bpage, /* in: block to be freed */ ibool zip, /* in: TRUE if should remove also the compressed page of an uncompressed page */ - ibool* buf_pool_mutex_released, + ibool* buf_pool_mutex_released) /* in: pointer to a variable that will be assigned TRUE if buf_pool_mutex was temporarily released, or NULL */ - ibool have_LRU_mutex) { buf_page_t* b = NULL; mutex_t* block_mutex = buf_page_get_mutex(bpage); - //ut_ad(buf_pool_mutex_own()); - /* optimistic */ - //ut_ad(mutex_own(block_mutex)); - //ut_ad(buf_page_in_file(bpage)); - //ut_ad(bpage->in_LRU_list); - //ut_ad(!bpage->in_flush_list == !bpage->oldest_modification); + ut_ad(buf_pool_mutex_own()); + ut_ad(mutex_own(block_mutex)); + ut_ad(buf_page_in_file(bpage)); + ut_ad(bpage->in_LRU_list); + ut_ad(!bpage->in_flush_list == !bpage->oldest_modification); UNIV_MEM_ASSERT_RW(bpage, sizeof *bpage); - if (!bpage->in_LRU_list || !block_mutex || !buf_page_can_relocate(bpage)) { + if (!buf_page_can_relocate(bpage)) { /* Do not free buffer-fixed or I/O-fixed blocks. */ return(BUF_LRU_NOT_FREED); @@ -1457,15 +1378,15 @@ buf_LRU_free_block( If it cannot be allocated (without freeing a block from the LRU list), refuse to free bpage. */ alloc: - //buf_pool_mutex_exit_forbid(); - b = buf_buddy_alloc(sizeof *b, NULL, FALSE); - //buf_pool_mutex_exit_allow(); + buf_pool_mutex_exit_forbid(); + b = buf_buddy_alloc(sizeof *b, NULL); + buf_pool_mutex_exit_allow(); if (UNIV_UNLIKELY(!b)) { return(BUF_LRU_CANNOT_RELOCATE); } - //memcpy(b, bpage, sizeof *b); + memcpy(b, bpage, sizeof *b); } #ifdef UNIV_DEBUG @@ -1476,41 +1397,6 @@ alloc: } #endif /* UNIV_DEBUG */ - /* not to break latch order, must re-enter block_mutex */ - mutex_exit(block_mutex); - - if (!have_LRU_mutex) - mutex_enter(&LRU_list_mutex); /* optimistic */ - mutex_enter(&flush_list_mutex); - rw_lock_x_lock(&page_hash_latch); - mutex_enter(block_mutex); - - /* recheck states of block */ - if (!bpage->in_LRU_list || block_mutex != buf_page_get_mutex(bpage) - || !buf_page_can_relocate(bpage)) { -not_freed: - if (b) { - buf_buddy_free(b, sizeof *b, TRUE); - } - if (!have_LRU_mutex) - mutex_exit(&LRU_list_mutex); - mutex_exit(&flush_list_mutex); - rw_lock_x_unlock(&page_hash_latch); - return(BUF_LRU_NOT_FREED); - } else if (zip || !bpage->zip.data) { - if (bpage->oldest_modification) - goto not_freed; - } else if (bpage->oldest_modification) { - if (buf_page_get_state(bpage) != BUF_BLOCK_FILE_PAGE) { - ut_ad(buf_page_get_state(bpage) == BUF_BLOCK_ZIP_DIRTY); - goto not_freed; - } - } - - if (b) { - memcpy(b, bpage, sizeof *b); - } - if (buf_LRU_block_remove_hashed_page(bpage, zip) != BUF_BLOCK_ZIP_FREE) { ut_a(bpage->buf_fix_count == 0); @@ -1522,10 +1408,6 @@ not_freed: ut_a(!buf_page_hash_get(bpage->space, bpage->offset)); - while (prev_b && !prev_b->in_LRU_list) { - prev_b = UT_LIST_GET_PREV(LRU, prev_b); - } - b->state = b->oldest_modification ? BUF_BLOCK_ZIP_DIRTY : BUF_BLOCK_ZIP_PAGE; @@ -1639,10 +1521,7 @@ not_freed: *buf_pool_mutex_released = TRUE; } - //buf_pool_mutex_exit(); - mutex_exit(&LRU_list_mutex); - mutex_exit(&flush_list_mutex); - rw_lock_x_unlock(&page_hash_latch); + buf_pool_mutex_exit(); mutex_exit(block_mutex); /* Remove possible adaptive hash index on the page. @@ -1674,9 +1553,7 @@ not_freed: : BUF_NO_CHECKSUM_MAGIC); } - //buf_pool_mutex_enter(); - if (have_LRU_mutex) - mutex_enter(&LRU_list_mutex); + buf_pool_mutex_enter(); mutex_enter(block_mutex); if (b) { @@ -1686,18 +1563,13 @@ not_freed: mutex_exit(&buf_pool_zip_mutex); } - buf_LRU_block_free_hashed_page((buf_block_t*) bpage, FALSE); + buf_LRU_block_free_hashed_page((buf_block_t*) bpage); } else { /* The block_mutex should have been released by buf_LRU_block_remove_hashed_page() when it returns BUF_BLOCK_ZIP_FREE. */ ut_ad(block_mutex == &buf_pool_zip_mutex); mutex_enter(block_mutex); - - if (!have_LRU_mutex) - mutex_exit(&LRU_list_mutex); - mutex_exit(&flush_list_mutex); - rw_lock_x_unlock(&page_hash_latch); } return(BUF_LRU_FREED); @@ -1709,13 +1581,12 @@ UNIV_INTERN void buf_LRU_block_free_non_file_page( /*=============================*/ - buf_block_t* block, /* in: block, must not contain a file page */ - ibool have_page_hash_mutex) + buf_block_t* block) /* in: block, must not contain a file page */ { void* data; ut_ad(block); - //ut_ad(buf_pool_mutex_own()); + ut_ad(buf_pool_mutex_own()); ut_ad(mutex_own(&block->mutex)); switch (buf_block_get_state(block)) { @@ -1749,17 +1620,15 @@ buf_LRU_block_free_non_file_page( if (data) { block->page.zip.data = NULL; mutex_exit(&block->mutex); - //buf_pool_mutex_exit_forbid(); - buf_buddy_free(data, page_zip_get_size(&block->page.zip), have_page_hash_mutex); - //buf_pool_mutex_exit_allow(); + buf_pool_mutex_exit_forbid(); + buf_buddy_free(data, page_zip_get_size(&block->page.zip)); + buf_pool_mutex_exit_allow(); mutex_enter(&block->mutex); page_zip_set_size(&block->page.zip, 0); } - mutex_enter(&free_list_mutex); UT_LIST_ADD_FIRST(list, buf_pool->free, (&block->page)); ut_d(block->page.in_free_list = TRUE); - mutex_exit(&free_list_mutex); UNIV_MEM_ASSERT_AND_FREE(block->frame, UNIV_PAGE_SIZE); } @@ -1788,11 +1657,7 @@ buf_LRU_block_remove_hashed_page( { const buf_page_t* hashed_bpage; ut_ad(bpage); - //ut_ad(buf_pool_mutex_own()); - ut_ad(mutex_own(&LRU_list_mutex)); -#ifdef UNIV_SYNC_DEBUG - ut_ad(rw_lock_own(&page_hash_latch, RW_LOCK_EX)); -#endif + ut_ad(buf_pool_mutex_own()); ut_ad(mutex_own(buf_page_get_mutex(bpage))); ut_a(buf_page_get_io_fix(bpage) == BUF_IO_NONE); @@ -1893,9 +1758,7 @@ buf_LRU_block_remove_hashed_page( #if defined UNIV_DEBUG || defined UNIV_BUF_DEBUG mutex_exit(buf_page_get_mutex(bpage)); - //buf_pool_mutex_exit(); - mutex_exit(&LRU_list_mutex); - rw_lock_x_unlock(&page_hash_latch); + buf_pool_mutex_exit(); buf_print(); buf_LRU_print(); buf_validate(); @@ -1921,11 +1784,11 @@ buf_LRU_block_remove_hashed_page( UT_LIST_REMOVE(list, buf_pool->zip_clean, bpage); mutex_exit(&buf_pool_zip_mutex); - //buf_pool_mutex_exit_forbid(); + buf_pool_mutex_exit_forbid(); buf_buddy_free(bpage->zip.data, - page_zip_get_size(&bpage->zip), TRUE); - buf_buddy_free(bpage, sizeof(*bpage), TRUE); - //buf_pool_mutex_exit_allow(); + page_zip_get_size(&bpage->zip)); + buf_buddy_free(bpage, sizeof(*bpage)); + buf_pool_mutex_exit_allow(); UNIV_MEM_UNDESC(bpage); return(BUF_BLOCK_ZIP_FREE); @@ -1944,9 +1807,9 @@ buf_LRU_block_remove_hashed_page( bpage->zip.data = NULL; mutex_exit(&((buf_block_t*) bpage)->mutex); - //buf_pool_mutex_exit_forbid(); - buf_buddy_free(data, page_zip_get_size(&bpage->zip), TRUE); - //buf_pool_mutex_exit_allow(); + buf_pool_mutex_exit_forbid(); + buf_buddy_free(data, page_zip_get_size(&bpage->zip)); + buf_pool_mutex_exit_allow(); mutex_enter(&((buf_block_t*) bpage)->mutex); page_zip_set_size(&bpage->zip, 0); } @@ -1972,16 +1835,15 @@ static void buf_LRU_block_free_hashed_page( /*===========================*/ - buf_block_t* block, /* in: block, must contain a file page and + buf_block_t* block) /* in: block, must contain a file page and be in a state where it can be freed */ - ibool have_page_hash_mutex) { - //ut_ad(buf_pool_mutex_own()); + ut_ad(buf_pool_mutex_own()); ut_ad(mutex_own(&block->mutex)); buf_block_set_state(block, BUF_BLOCK_MEMORY); - buf_LRU_block_free_non_file_page(block, have_page_hash_mutex); + buf_LRU_block_free_non_file_page(block); } /************************************************************************ @@ -1999,8 +1861,7 @@ buf_LRU_stat_update(void) goto func_exit; } - //buf_pool_mutex_enter(); - mutex_enter(&buf_pool_mutex); + buf_pool_mutex_enter(); /* Update the index. */ item = &buf_LRU_stat_arr[buf_LRU_stat_arr_ind]; @@ -2014,8 +1875,7 @@ buf_LRU_stat_update(void) /* Put current entry in the array. */ memcpy(item, &buf_LRU_stat_cur, sizeof *item); - //buf_pool_mutex_exit(); - mutex_exit(&buf_pool_mutex); + buf_pool_mutex_exit(); func_exit: /* Clear the current entry. */ @@ -2037,8 +1897,7 @@ buf_LRU_validate(void) ulint LRU_pos; ut_ad(buf_pool); - //buf_pool_mutex_enter(); - mutex_enter(&LRU_list_mutex); + buf_pool_mutex_enter(); if (UT_LIST_GET_LEN(buf_pool->LRU) >= BUF_LRU_OLD_MIN_LEN) { @@ -2097,9 +1956,6 @@ buf_LRU_validate(void) ut_a(buf_pool->LRU_old_len == old_len); } - mutex_exit(&LRU_list_mutex); - mutex_enter(&free_list_mutex); - UT_LIST_VALIDATE(list, buf_page_t, buf_pool->free); for (bpage = UT_LIST_GET_FIRST(buf_pool->free); @@ -2109,9 +1965,6 @@ buf_LRU_validate(void) ut_a(buf_page_get_state(bpage) == BUF_BLOCK_NOT_USED); } - mutex_exit(&free_list_mutex); - mutex_enter(&LRU_list_mutex); - UT_LIST_VALIDATE(unzip_LRU, buf_block_t, buf_pool->unzip_LRU); for (block = UT_LIST_GET_FIRST(buf_pool->unzip_LRU); @@ -2123,8 +1976,7 @@ buf_LRU_validate(void) ut_a(buf_page_belongs_to_unzip_LRU(&block->page)); } - //buf_pool_mutex_exit(); - mutex_exit(&LRU_list_mutex); + buf_pool_mutex_exit(); return(TRUE); } #endif /* UNIV_DEBUG || UNIV_BUF_DEBUG */ @@ -2140,8 +1992,7 @@ buf_LRU_print(void) const buf_page_t* bpage; ut_ad(buf_pool); - //buf_pool_mutex_enter(); - mutex_enter(&LRU_list_mutex); + buf_pool_mutex_enter(); fprintf(stderr, "Pool ulint clock %lu\n", (ulong) buf_pool->ulint_clock); @@ -2204,7 +2055,6 @@ buf_LRU_print(void) bpage = UT_LIST_GET_NEXT(LRU, bpage); } - //buf_pool_mutex_exit(); - mutex_exit(&LRU_list_mutex); + buf_pool_mutex_exit(); } #endif /* UNIV_DEBUG_PRINT || UNIV_DEBUG || UNIV_BUF_DEBUG */ === modified file 'storage/xtradb/buf/buf0rea.c' --- a/storage/xtradb/buf/buf0rea.c 2009-03-26 06:11:11 +0000 +++ b/storage/xtradb/buf/buf0rea.c 2009-05-04 02:45:47 +0000 @@ -246,22 +246,18 @@ buf_read_ahead_random( LRU_recent_limit = buf_LRU_get_recent_limit(); - //buf_pool_mutex_enter(); - mutex_enter(&buf_pool_mutex); + buf_pool_mutex_enter(); if (buf_pool->n_pend_reads > buf_pool->curr_size / BUF_READ_AHEAD_PEND_LIMIT) { - //buf_pool_mutex_exit(); - mutex_exit(&buf_pool_mutex); + buf_pool_mutex_exit(); return(0); } - mutex_exit(&buf_pool_mutex); /* Count how many blocks in the area have been recently accessed, that is, reside near the start of the LRU list. */ - rw_lock_s_lock(&page_hash_latch); for (i = low; i < high; i++) { const buf_page_t* bpage = buf_page_hash_get(space, i); @@ -273,15 +269,13 @@ buf_read_ahead_random( if (recent_blocks >= BUF_READ_AHEAD_RANDOM_THRESHOLD) { - //buf_pool_mutex_exit(); - rw_lock_s_unlock(&page_hash_latch); + buf_pool_mutex_exit(); goto read_ahead; } } } - //buf_pool_mutex_exit(); - rw_lock_s_unlock(&page_hash_latch); + buf_pool_mutex_exit(); /* Do nothing */ return(0); @@ -475,12 +469,10 @@ buf_read_ahead_linear( tablespace_version = fil_space_get_version(space); - //buf_pool_mutex_enter(); - mutex_enter(&buf_pool_mutex); + buf_pool_mutex_enter(); if (high > fil_space_get_size(space)) { - //buf_pool_mutex_exit(); - mutex_exit(&buf_pool_mutex); + buf_pool_mutex_exit(); /* The area is not whole, return */ return(0); @@ -488,12 +480,10 @@ buf_read_ahead_linear( if (buf_pool->n_pend_reads > buf_pool->curr_size / BUF_READ_AHEAD_PEND_LIMIT) { - //buf_pool_mutex_exit(); - mutex_exit(&buf_pool_mutex); + buf_pool_mutex_exit(); return(0); } - mutex_exit(&buf_pool_mutex); /* Check that almost all pages in the area have been accessed; if offset == low, the accesses must be in a descending order, otherwise, @@ -507,7 +497,6 @@ buf_read_ahead_linear( fail_count = 0; - rw_lock_s_lock(&page_hash_latch); for (i = low; i < high; i++) { bpage = buf_page_hash_get(space, i); @@ -531,8 +520,7 @@ buf_read_ahead_linear( * LINEAR_AREA_THRESHOLD_COEF) { /* Too many failures: return */ - //buf_pool_mutex_exit(); - rw_lock_s_unlock(&page_hash_latch); + buf_pool_mutex_exit(); return(0); } @@ -543,8 +531,7 @@ buf_read_ahead_linear( bpage = buf_page_hash_get(space, offset); if (bpage == NULL) { - //buf_pool_mutex_exit(); - rw_lock_s_unlock(&page_hash_latch); + buf_pool_mutex_exit(); return(0); } @@ -570,8 +557,7 @@ buf_read_ahead_linear( pred_offset = fil_page_get_prev(frame); succ_offset = fil_page_get_next(frame); - //buf_pool_mutex_exit(); - rw_lock_s_unlock(&page_hash_latch); + buf_pool_mutex_exit(); if ((offset == low) && (succ_offset == offset + 1)) { === modified file 'storage/xtradb/handler/ha_innodb.cc' --- a/storage/xtradb/handler/ha_innodb.cc 2009-06-09 12:21:26 +0000 +++ b/storage/xtradb/handler/ha_innodb.cc 2009-06-11 12:53:26 +0000 @@ -35,7 +35,12 @@ Place, Suite 330, Boston, MA 02111-1307 #pragma implementation // gcc: Class implementation #endif +#define MYSQL_SERVER + #include <mysql_priv.h> +#ifdef MYSQL_SERVER +#include <log_event.h> +#endif /* MYSQL_SERVER */ #include <m_ctype.h> #include <mysys_err.h> @@ -78,6 +83,14 @@ extern "C" { #include "i_s.h" #include "handler0vars.h" +#ifdef MYSQL_SERVER +// Defined in trx0sys.c +extern char trx_sys_mysql_master_log_name[]; +extern ib_int64_t trx_sys_mysql_master_log_pos; +extern char trx_sys_mysql_relay_log_name[]; +extern ib_int64_t trx_sys_mysql_relay_log_pos; +#endif /* MYSQL_SERVER */ + #ifndef MYSQL_SERVER /* This is needed because of Bug #3596. Let us hope that pthread_mutex_t is defined the same in both builds: the MySQL server and the InnoDB plugin. */ @@ -176,6 +189,7 @@ static my_bool innobase_use_doublewrite static my_bool innobase_use_checksums = TRUE; static my_bool innobase_extra_undoslots = FALSE; static my_bool innobase_locks_unsafe_for_binlog = FALSE; +static my_bool innobase_overwrite_relay_log_info = FALSE; static my_bool innobase_rollback_on_timeout = FALSE; static my_bool innobase_create_status_file = FALSE; static my_bool innobase_stats_on_metadata = TRUE; @@ -1920,6 +1934,89 @@ innobase_init( } #endif /* UNIV_DEBUG */ +#ifndef MYSQL_SERVER + innodb_overwrite_relay_log_info = FALSE; +#endif + +#ifdef HAVE_REPLICATION +#ifdef MYSQL_SERVER + /* read master log position from relay-log.info if exists */ + char fname[FN_REFLEN+128]; + int pos; + int info_fd; + IO_CACHE info_file; + + fname[0] = '\0'; + + if(innobase_overwrite_relay_log_info) { + + fprintf(stderr, + "InnoDB: Warning: innodb_overwrite_relay_log_info is enabled." + " Updates in other storage engines may have problem with consistency.\n"); + + bzero((char*) &info_file, sizeof(info_file)); + fn_format(fname, relay_log_info_file, mysql_data_home, "", 4+32); + + int error=0; + + if (!access(fname,F_OK)) { + /* exist */ + if ((info_fd = my_open(fname, O_RDWR|O_BINARY, MYF(MY_WME))) < 0) { + error=1; + } else if (init_io_cache(&info_file, info_fd, IO_SIZE*2, + READ_CACHE, 0L, 0, MYF(MY_WME))) { + error=1; + } + + if (error) { +relay_info_error: + if (info_fd >= 0) + my_close(info_fd, MYF(0)); + fname[0] = '\0'; + goto skip_relay; + } + } else { + fname[0] = '\0'; + goto skip_relay; + } + + if (init_strvar_from_file(fname, sizeof(fname), &info_file, "") || /* dummy (it is relay-log) */ + init_intvar_from_file(&pos, &info_file, BIN_LOG_HEADER_SIZE)) { + end_io_cache(&info_file); + error=1; + goto relay_info_error; + } + + fprintf(stderr, + "InnoDB: relay-log.info is detected.\n" + "InnoDB: relay log: position %u, file name %s\n", + pos, fname); + + strncpy(trx_sys_mysql_relay_log_name, fname, TRX_SYS_MYSQL_MASTER_LOG_NAME_LEN); + trx_sys_mysql_relay_log_pos = (ib_int64_t) pos; + + if (init_strvar_from_file(fname, sizeof(fname), &info_file, "") || + init_intvar_from_file(&pos, &info_file, 0)) { + end_io_cache(&info_file); + error=1; + goto relay_info_error; + } + + fprintf(stderr, + "InnoDB: master log: position %u, file name %s\n", + pos, fname); + + strncpy(trx_sys_mysql_master_log_name, fname, TRX_SYS_MYSQL_MASTER_LOG_NAME_LEN); + trx_sys_mysql_master_log_pos = (ib_int64_t) pos; + + end_io_cache(&info_file); + if (info_fd >= 0) + my_close(info_fd, MYF(0)); + } +skip_relay: +#endif /* MYSQL_SERVER */ +#endif /* HAVE_REPLICATION */ + /* Check that values don't overflow on 32-bit systems. */ if (sizeof(ulint) == 4) { if (innobase_buffer_pool_size > UINT_MAX32) { @@ -2003,6 +2100,77 @@ mem_free_and_error: goto error; } +#ifdef HAVE_REPLICATION +#ifdef MYSQL_SERVER + if(innobase_overwrite_relay_log_info) { + /* If InnoDB progressed from relay-log.info, overwrite it */ + if (fname[0] == '\0') { + fprintf(stderr, + "InnoDB: something wrong with relay-info.log. InnoDB will not overwrite it.\n"); + } else if (0 != strcmp(fname, trx_sys_mysql_master_log_name) + || pos != trx_sys_mysql_master_log_pos) { + /* Overwrite relay-log.info */ + bzero((char*) &info_file, sizeof(info_file)); + fn_format(fname, relay_log_info_file, mysql_data_home, "", 4+32); + + int error = 0; + + if (!access(fname,F_OK)) { + /* exist */ + if ((info_fd = my_open(fname, O_RDWR|O_BINARY, MYF(MY_WME))) < 0) { + error = 1; + } else if (init_io_cache(&info_file, info_fd, IO_SIZE*2, + WRITE_CACHE, 0L, 0, MYF(MY_WME))) { + error = 1; + } + + if (error) { + if (info_fd >= 0) + my_close(info_fd, MYF(0)); + goto skip_overwrite; + } + } else { + error = 1; + goto skip_overwrite; + } + + char buff[FN_REFLEN*2+22*2+4], *pos; + + my_b_seek(&info_file, 0L); + pos=strmov(buff, trx_sys_mysql_relay_log_name); + *pos++='\n'; + pos=longlong2str(trx_sys_mysql_relay_log_pos, pos, 10); + *pos++='\n'; + pos=strmov(pos, trx_sys_mysql_master_log_name); + *pos++='\n'; + pos=longlong2str(trx_sys_mysql_master_log_pos, pos, 10); + *pos='\n'; + + if (my_b_write(&info_file, (uchar*) buff, (size_t) (pos-buff)+1)) + error = 1; + if (flush_io_cache(&info_file)) + error = 1; + + end_io_cache(&info_file); + if (info_fd >= 0) + my_close(info_fd, MYF(0)); +skip_overwrite: + if (error) { + fprintf(stderr, + "InnoDB: ERROR: error occured during overwriting relay-log.info.\n"); + } else { + fprintf(stderr, + "InnoDB: relay-log.info was overwritten.\n"); + } + } else { + fprintf(stderr, + "InnoDB: InnoDB and relay-log.info are synchronized. InnoDB will not overwrite it.\n"); + } + } +#endif /* MYSQL_SERVER */ +#endif /* HAVE_REPLICATION */ + + srv_extra_undoslots = (ibool) innobase_extra_undoslots; /* -------------- Log files ---------------------------*/ @@ -2270,6 +2438,28 @@ innobase_commit_low( return; } +#ifdef HAVE_REPLICATION +#ifdef MYSQL_SERVER + THD *thd=current_thd; + + if (thd && thd->slave_thread) { + /* Update the replication position info inside InnoDB. + In embedded server, does nothing. */ + const char *log_file_name, *group_relay_log_name; + ulonglong log_pos, relay_log_pos; + bool res = rpl_get_position_info(&log_file_name, &log_pos, + &group_relay_log_name, + &relay_log_pos); + if (res) { + trx->mysql_master_log_file_name = log_file_name; + trx->mysql_master_log_pos = (ib_int64_t)log_pos; + trx->mysql_relay_log_file_name = group_relay_log_name; + trx->mysql_relay_log_pos = (ib_int64_t)relay_log_pos; + } + } +#endif /* MYSQL_SERVER */ +#endif /* HAVE_REPLICATION */ + trx_commit_for_mysql(trx); } @@ -9509,6 +9699,12 @@ static MYSQL_SYSVAR_BOOL(extra_undoslots "don't use the datafile for normal mysqld or ibbackup! ####", NULL, NULL, FALSE); +static MYSQL_SYSVAR_BOOL(overwrite_relay_log_info, innobase_overwrite_relay_log_info, + PLUGIN_VAR_NOCMDARG | PLUGIN_VAR_READONLY, + "During InnoDB crash recovery on slave overwrite relay-log.info " + "to align master log file position if information in InnoDB and relay-log.info is different.", + NULL, NULL, FALSE); + static MYSQL_SYSVAR_BOOL(doublewrite, innobase_use_doublewrite, PLUGIN_VAR_NOCMDARG | PLUGIN_VAR_READONLY, "Enable InnoDB doublewrite buffer (enabled by default). " @@ -9851,6 +10047,7 @@ static struct st_mysql_sys_var* innobase MYSQL_SYSVAR(max_purge_lag), MYSQL_SYSVAR(mirrored_log_groups), MYSQL_SYSVAR(open_files), + MYSQL_SYSVAR(overwrite_relay_log_info), MYSQL_SYSVAR(rollback_on_timeout), MYSQL_SYSVAR(stats_on_metadata), MYSQL_SYSVAR(stats_sample_pages), === modified file 'storage/xtradb/handler/i_s.cc' --- a/storage/xtradb/handler/i_s.cc 2009-03-26 06:11:11 +0000 +++ b/storage/xtradb/handler/i_s.cc 2009-05-04 02:45:47 +0000 @@ -2282,8 +2282,7 @@ i_s_cmpmem_fill_low( RETURN_IF_INNODB_NOT_STARTED(tables->schema_table_name); - //buf_pool_mutex_enter(); - mutex_enter(&zip_free_mutex); + buf_pool_mutex_enter(); for (uint x = 0; x <= BUF_BUDDY_SIZES; x++) { buf_buddy_stat_t* buddy_stat = &buf_buddy_stat[x]; @@ -2309,8 +2308,7 @@ i_s_cmpmem_fill_low( } } - //buf_pool_mutex_exit(); - mutex_exit(&zip_free_mutex); + buf_pool_mutex_exit(); DBUG_RETURN(status); } === modified file 'storage/xtradb/handler/innodb_patch_info.h' --- a/storage/xtradb/handler/innodb_patch_info.h 2009-03-26 06:11:11 +0000 +++ b/storage/xtradb/handler/innodb_patch_info.h 2009-05-04 02:45:47 +0000 @@ -26,11 +26,10 @@ struct innodb_enhancement { {"xtradb_show_enhancements","I_S.XTRADB_ENHANCEMENTS","","http://www.percona.com/docs/wiki/percona-xtradb"}, {"innodb_show_status","Improvements to SHOW INNODB STATUS","Memory information and lock info fixes","http://www.percona.com/docs/wiki/percona-xtradb"}, {"innodb_io","Improvements to InnoDB IO","","http://www.percona.com/docs/wiki/percona-xtradb"}, -{"innodb_rw_lock","InnoDB RW-lock fixes","Useful for 8+ cores SMP systems","http://www.percona.com/docs/wiki/percona-xtradb"}, {"innodb_opt_lru_count","Fix of buffer_pool mutex","Decreases contention on buffer_pool mutex on LRU operations","http://www.percona.com/docs/wiki/percona-xtradb"}, {"innodb_buffer_pool_pages","Information of buffer pool content","","http://www.percona.com/docs/wiki/percona-xtradb"}, -{"innodb_split_buf_pool_mutex","More fix of buffer_pool mutex","Spliting buf_pool_mutex and optimizing based on innodb_opt_lru_count","http://www.percona.com/docs/wiki/percona-xtradb"}, {"innodb_expand_undo_slots","expandable maximum number of undo slots","from 1024 (default) to about 4000","http://www.percona.com/docs/wiki/percona-xtradb"}, {"innodb_extra_rseg","allow to create extra rollback segments","When create new db, the new parameter allows to create more rollback segments","http://www.percona.com/docs/wiki/percona-xtradb"}, +{"innodb_overwrite_relay_log_info","overwrite relay-log.info when slave recovery","Building as plugin, it is not used.","http://www.percona.com/docs/wiki/percona-xtradb:innodb_overwrite_relay_log_…"}, {NULL, NULL, NULL, NULL} }; === modified file 'storage/xtradb/include/buf0buddy.h' --- a/storage/xtradb/include/buf0buddy.h 2009-03-26 06:11:11 +0000 +++ b/storage/xtradb/include/buf0buddy.h 2009-05-04 02:45:47 +0000 @@ -49,11 +49,10 @@ buf_buddy_alloc( /* out: allocated block, possibly NULL if lru == NULL */ ulint size, /* in: block size, up to UNIV_PAGE_SIZE */ - ibool* lru, /* in: pointer to a variable that will be assigned + ibool* lru) /* in: pointer to a variable that will be assigned TRUE if storage was allocated from the LRU list and buf_pool_mutex was temporarily released, or NULL if the LRU list should not be used */ - ibool have_page_hash_mutex) __attribute__((malloc)); /************************************************************************** @@ -64,8 +63,7 @@ buf_buddy_free( /*===========*/ void* buf, /* in: block to be freed, must not be pointed to by the buffer pool */ - ulint size, /* in: block size, up to UNIV_PAGE_SIZE */ - ibool have_page_hash_mutex) + ulint size) /* in: block size, up to UNIV_PAGE_SIZE */ __attribute__((nonnull)); /** Statistics of buddy blocks of a given size. */ === modified file 'storage/xtradb/include/buf0buddy.ic' --- a/storage/xtradb/include/buf0buddy.ic 2009-03-26 06:11:11 +0000 +++ b/storage/xtradb/include/buf0buddy.ic 2009-05-04 02:45:47 +0000 @@ -44,11 +44,10 @@ buf_buddy_alloc_low( possibly NULL if lru==NULL */ ulint i, /* in: index of buf_pool->zip_free[], or BUF_BUDDY_SIZES */ - ibool* lru, /* in: pointer to a variable that will be assigned + ibool* lru) /* in: pointer to a variable that will be assigned TRUE if storage was allocated from the LRU list and buf_pool_mutex was temporarily released, or NULL if the LRU list should not be used */ - ibool have_page_hash_mutex) __attribute__((malloc)); /************************************************************************** @@ -59,9 +58,8 @@ buf_buddy_free_low( /*===============*/ void* buf, /* in: block to be freed, must not be pointed to by the buffer pool */ - ulint i, /* in: index of buf_pool->zip_free[], + ulint i) /* in: index of buf_pool->zip_free[], or BUF_BUDDY_SIZES */ - ibool have_page_hash_mutex) __attribute__((nonnull)); /************************************************************************** @@ -100,15 +98,14 @@ buf_buddy_alloc( /* out: allocated block, possibly NULL if lru == NULL */ ulint size, /* in: block size, up to UNIV_PAGE_SIZE */ - ibool* lru, /* in: pointer to a variable that will be assigned + ibool* lru) /* in: pointer to a variable that will be assigned TRUE if storage was allocated from the LRU list and buf_pool_mutex was temporarily released, or NULL if the LRU list should not be used */ - ibool have_page_hash_mutex) { - //ut_ad(buf_pool_mutex_own()); + ut_ad(buf_pool_mutex_own()); - return(buf_buddy_alloc_low(buf_buddy_get_slot(size), lru, have_page_hash_mutex)); + return(buf_buddy_alloc_low(buf_buddy_get_slot(size), lru)); } /************************************************************************** @@ -119,26 +116,11 @@ buf_buddy_free( /*===========*/ void* buf, /* in: block to be freed, must not be pointed to by the buffer pool */ - ulint size, /* in: block size, up to UNIV_PAGE_SIZE */ - ibool have_page_hash_mutex) + ulint size) /* in: block size, up to UNIV_PAGE_SIZE */ { - //ut_ad(buf_pool_mutex_own()); + ut_ad(buf_pool_mutex_own()); - if (!have_page_hash_mutex) { - mutex_enter(&LRU_list_mutex); - mutex_enter(&flush_list_mutex); - rw_lock_x_lock(&page_hash_latch); - } - - mutex_enter(&zip_free_mutex); - buf_buddy_free_low(buf, buf_buddy_get_slot(size), TRUE); - mutex_exit(&zip_free_mutex); - - if (!have_page_hash_mutex) { - mutex_exit(&LRU_list_mutex); - mutex_exit(&flush_list_mutex); - rw_lock_x_unlock(&page_hash_latch); - } + buf_buddy_free_low(buf, buf_buddy_get_slot(size)); } #ifdef UNIV_MATERIALIZE === modified file 'storage/xtradb/include/buf0buf.h' --- a/storage/xtradb/include/buf0buf.h 2009-03-26 06:11:11 +0000 +++ b/storage/xtradb/include/buf0buf.h 2009-05-04 04:32:30 +0000 @@ -1104,11 +1104,11 @@ struct buf_block_struct{ a block is in the unzip_LRU list if page.state == BUF_BLOCK_FILE_PAGE and page.zip.data != NULL */ -//#ifdef UNIV_DEBUG +#ifdef UNIV_DEBUG ibool in_unzip_LRU_list;/* TRUE if the page is in the decompressed LRU list; used in debugging */ -//#endif /* UNIV_DEBUG */ +#endif /* UNIV_DEBUG */ byte* frame; /* pointer to buffer frame which is of size UNIV_PAGE_SIZE, and aligned to an address divisible by @@ -1316,12 +1316,6 @@ struct buf_pool_struct{ /* mutex protecting the buffer pool struct and control blocks, except the read-write lock in them */ extern mutex_t buf_pool_mutex; -extern mutex_t LRU_list_mutex; -extern mutex_t flush_list_mutex; -extern rw_lock_t page_hash_latch; -extern mutex_t free_list_mutex; -extern mutex_t zip_free_mutex; -extern mutex_t zip_hash_mutex; /* mutex protecting the control blocks of compressed-only pages (of type buf_page_t, not buf_block_t) */ extern mutex_t buf_pool_zip_mutex; === modified file 'storage/xtradb/include/buf0buf.ic' --- a/storage/xtradb/include/buf0buf.ic 2009-03-26 06:11:11 +0000 +++ b/storage/xtradb/include/buf0buf.ic 2009-05-04 02:45:47 +0000 @@ -100,8 +100,7 @@ buf_pool_get_oldest_modification(void) buf_page_t* bpage; ib_uint64_t lsn; - //buf_pool_mutex_enter(); - mutex_enter(&flush_list_mutex); + buf_pool_mutex_enter(); bpage = UT_LIST_GET_LAST(buf_pool->flush_list); @@ -112,8 +111,7 @@ buf_pool_get_oldest_modification(void) lsn = bpage->oldest_modification; } - //buf_pool_mutex_exit(); - mutex_exit(&flush_list_mutex); + buf_pool_mutex_exit(); /* The returned answer may be out of date: the flush_list can change after the mutex has been released. */ @@ -130,8 +128,7 @@ buf_pool_clock_tic(void) /*====================*/ /* out: new clock value */ { - //ut_ad(buf_pool_mutex_own()); - ut_ad(mutex_own(&LRU_list_mutex)); + ut_ad(buf_pool_mutex_own()); buf_pool->ulint_clock++; @@ -249,7 +246,7 @@ buf_page_in_file( case BUF_BLOCK_ZIP_FREE: /* This is a free page in buf_pool->zip_free[]. Such pages should only be accessed by the buddy allocator. */ - /* ut_error; */ /* optimistic */ + ut_error; break; case BUF_BLOCK_ZIP_PAGE: case BUF_BLOCK_ZIP_DIRTY: @@ -308,7 +305,7 @@ buf_page_get_mutex( { switch (buf_page_get_state(bpage)) { case BUF_BLOCK_ZIP_FREE: - /* ut_error; */ /* optimistic */ + ut_error; return(NULL); case BUF_BLOCK_ZIP_PAGE: case BUF_BLOCK_ZIP_DIRTY: @@ -413,7 +410,7 @@ buf_page_set_io_fix( buf_page_t* bpage, /* in/out: control block */ enum buf_io_fix io_fix) /* in: io_fix state */ { - //ut_ad(buf_pool_mutex_own()); + ut_ad(buf_pool_mutex_own()); ut_ad(mutex_own(buf_page_get_mutex(bpage))); bpage->io_fix = io_fix; @@ -441,13 +438,12 @@ buf_page_can_relocate( /*==================*/ const buf_page_t* bpage) /* control block being relocated */ { - //ut_ad(buf_pool_mutex_own()); - /* optimistic */ - //ut_ad(mutex_own(buf_page_get_mutex(bpage))); - //ut_ad(buf_page_in_file(bpage)); - //ut_ad(bpage->in_LRU_list); + ut_ad(buf_pool_mutex_own()); + ut_ad(mutex_own(buf_page_get_mutex(bpage))); + ut_ad(buf_page_in_file(bpage)); + ut_ad(bpage->in_LRU_list); - return(bpage->in_LRU_list && bpage->io_fix == BUF_IO_NONE + return(buf_page_get_io_fix(bpage) == BUF_IO_NONE && bpage->buf_fix_count == 0); } @@ -476,8 +472,7 @@ buf_page_set_old( ibool old) /* in: old */ { ut_a(buf_page_in_file(bpage)); - //ut_ad(buf_pool_mutex_own()); - ut_ad(mutex_own(&LRU_list_mutex)); + ut_ad(buf_pool_mutex_own()); ut_ad(bpage->in_LRU_list); #ifdef UNIV_LRU_DEBUG @@ -733,17 +728,17 @@ buf_block_free( /*===========*/ buf_block_t* block) /* in, own: block to be freed */ { - //buf_pool_mutex_enter(); + buf_pool_mutex_enter(); mutex_enter(&block->mutex); ut_a(buf_block_get_state(block) != BUF_BLOCK_FILE_PAGE); - buf_LRU_block_free_non_file_page(block, FALSE); + buf_LRU_block_free_non_file_page(block); mutex_exit(&block->mutex); - //buf_pool_mutex_exit(); + buf_pool_mutex_exit(); } /************************************************************************* @@ -788,17 +783,14 @@ buf_page_io_query( buf_page_t* bpage) /* in: buf_pool block, must be bufferfixed */ { ibool io_fixed; - mutex_t* block_mutex = buf_page_get_mutex(bpage); - //buf_pool_mutex_enter(); - mutex_enter(block_mutex); + buf_pool_mutex_enter(); ut_ad(buf_page_in_file(bpage)); ut_ad(bpage->buf_fix_count > 0); io_fixed = buf_page_get_io_fix(bpage) != BUF_IO_NONE; - //buf_pool_mutex_exit(); - mutex_exit(block_mutex); + buf_pool_mutex_exit(); return(io_fixed); } @@ -925,11 +917,7 @@ buf_page_hash_get( ulint fold; ut_ad(buf_pool); - //ut_ad(buf_pool_mutex_own()); -#ifdef UNIV_SYNC_DEBUG - ut_ad(rw_lock_own(&page_hash_latch, RW_LOCK_EX) - || rw_lock_own(&page_hash_latch, RW_LOCK_SHARED)); -#endif + ut_ad(buf_pool_mutex_own()); /* Look for the page in the hash table */ @@ -978,13 +966,11 @@ buf_page_peek( { const buf_page_t* bpage; - //buf_pool_mutex_enter(); - rw_lock_s_lock(&page_hash_latch); + buf_pool_mutex_enter(); bpage = buf_page_hash_get(space, offset); - //buf_pool_mutex_exit(); - rw_lock_s_unlock(&page_hash_latch); + buf_pool_mutex_exit(); return(bpage != NULL); } @@ -1047,17 +1033,12 @@ buf_page_release( ut_a(block->page.buf_fix_count > 0); if (rw_latch == RW_X_LATCH && mtr->modifications) { - //buf_pool_mutex_enter(); - mutex_enter(&flush_list_mutex); - mutex_enter(&block->mutex); - ut_ad(buf_block_get_state(block) == BUF_BLOCK_FILE_PAGE); + buf_pool_mutex_enter(); buf_flush_note_modification(block, mtr); - //buf_pool_mutex_exit(); - mutex_exit(&flush_list_mutex); + buf_pool_mutex_exit(); } - else { + mutex_enter(&block->mutex); - } #ifdef UNIV_SYNC_DEBUG rw_lock_s_unlock(&(block->debug_latch)); === modified file 'storage/xtradb/include/buf0flu.ic' --- a/storage/xtradb/include/buf0flu.ic 2009-03-26 06:11:11 +0000 +++ b/storage/xtradb/include/buf0flu.ic 2009-05-04 02:45:47 +0000 @@ -59,8 +59,7 @@ buf_flush_note_modification( #ifdef UNIV_SYNC_DEBUG ut_ad(rw_lock_own(&(block->lock), RW_LOCK_EX)); #endif /* UNIV_SYNC_DEBUG */ - //ut_ad(buf_pool_mutex_own()); - ut_ad(mutex_own(&flush_list_mutex)); + ut_ad(buf_pool_mutex_own()); ut_ad(mtr->start_lsn != 0); ut_ad(mtr->modifications); @@ -100,8 +99,7 @@ buf_flush_recv_note_modification( ut_ad(rw_lock_own(&(block->lock), RW_LOCK_EX)); #endif /* UNIV_SYNC_DEBUG */ - //buf_pool_mutex_enter(); - mutex_enter(&flush_list_mutex); + buf_pool_mutex_enter(); ut_ad(block->page.newest_modification <= end_lsn); @@ -118,6 +116,5 @@ buf_flush_recv_note_modification( ut_ad(block->page.oldest_modification <= start_lsn); } - //buf_pool_mutex_exit(); - mutex_exit(&flush_list_mutex); + buf_pool_mutex_exit(); } === modified file 'storage/xtradb/include/buf0lru.h' --- a/storage/xtradb/include/buf0lru.h 2009-03-26 06:11:11 +0000 +++ b/storage/xtradb/include/buf0lru.h 2009-05-04 02:45:47 +0000 @@ -122,11 +122,10 @@ buf_LRU_free_block( buf_page_t* bpage, /* in: block to be freed */ ibool zip, /* in: TRUE if should remove also the compressed page of an uncompressed page */ - ibool* buf_pool_mutex_released, + ibool* buf_pool_mutex_released); /* in: pointer to a variable that will be assigned TRUE if buf_pool_mutex was temporarily released, or NULL */ - ibool have_LRU_mutex); /********************************************************************** Try to free a replaceable block. */ UNIV_INTERN @@ -170,8 +169,7 @@ UNIV_INTERN void buf_LRU_block_free_non_file_page( /*=============================*/ - buf_block_t* block, /* in: block, must not contain a file page */ - ibool have_page_hash_mutex); + buf_block_t* block); /* in: block, must not contain a file page */ /********************************************************************** Adds a block to the LRU list. */ UNIV_INTERN === modified file 'storage/xtradb/include/sync0rw.h' --- a/storage/xtradb/include/sync0rw.h 2009-06-09 15:08:46 +0000 +++ b/storage/xtradb/include/sync0rw.h 2009-06-11 12:53:26 +0000 @@ -357,31 +357,11 @@ rw_lock_get_x_lock_count( rw_lock_t* lock); /* in: rw-lock */ /************************************************************************ Accessor functions for rw lock. */ - -#ifdef INNODB_RW_LOCKS_USE_ATOMICS -UNIV_INLINE -ulint -rw_lock_get_s_waiters( -/*==================*/ - rw_lock_t* lock); -UNIV_INLINE -ulint -rw_lock_get_x_waiters( -/*==================*/ - rw_lock_t* lock); -UNIV_INLINE -ulint -rw_lock_get_wx_waiters( -/*================*/ - rw_lock_t* lock); -#else /* !INNODB_RW_LOCKS_USE_ATOMICS */ UNIV_INLINE ulint rw_lock_get_waiters( -/*==================*/ +/*================*/ rw_lock_t* lock); -#endif /* INNODB_RW_LOCKS_USE_ATOMICS */ - UNIV_INLINE ulint rw_lock_get_writer( @@ -498,16 +478,6 @@ rw_lock_debug_print( rw_lock_debug_t* info); /* in: debug struct */ #endif /* UNIV_SYNC_DEBUG */ -/* -#ifndef INNODB_RW_LOCKS_USE_ATOMICS -#error INNODB_RW_LOCKS_USE_ATOMICS is not defined. Do you use enough new GCC or compatibles? -#error Or do you use exact options for CFLAGS? -#error e.g. (for x86_32): "-m32 -march=i586 -mtune=i686" -#error e.g. (for Sparc_64): "-m64 -mcpu=v9" -#error Otherwise, this build may be slower than normal version. -#endif -*/ - /* NOTE! The structure appears here only for the compiler to know its size. Do not use its fields directly! The structure used in the spin lock implementation of a read-write lock. Several threads may have a shared lock @@ -519,16 +489,7 @@ no new readers will be let in while the struct rw_lock_struct { volatile lint lock_word; /* Holds the state of the lock. */ -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - volatile ulint s_waiters; /* 1: there are waiters (s_lock) */ - volatile ulint x_waiters; /* 1: there are waiters (x_lock) */ - volatile ulint wait_ex_waiters; /* 1: there are waiters (wait_ex) */ - volatile ulint reader_count; /* Number of readers who have locked this - lock in the shared mode */ - volatile ulint writer; -#else volatile ulint waiters;/* 1: there are waiters */ -#endif volatile ibool recursive;/* Default value FALSE which means the lock is non-recursive. The value is typically set to TRUE making normal rw_locks recursive. In @@ -545,16 +506,7 @@ struct rw_lock_struct { /* Thread id of writer thread. Is only guaranteed to have sane and non-stale value iff recursive flag is set. */ -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - volatile ulint writer_count; /* Number of times the same thread has - recursively locked the lock in the exclusive - mode */ - /* Used by sync0arr.c for thread queueing */ - os_event_t s_event; /* Used for s_lock */ - os_event_t x_event; /* Used for x_lock */ -#else os_event_t event; /* Used by sync0arr.c for thread queueing */ -#endif os_event_t wait_ex_event; /* Event for next-writer to wait on. A thread must decrement lock_word before waiting. */ @@ -576,7 +528,7 @@ struct rw_lock_struct { /* last s-lock file/line is not guaranteed to be correct */ const char* last_s_file_name;/* File name where last s-locked */ const char* last_x_file_name;/* File name where last x-locked */ - volatile ibool writer_is_wait_ex; + ibool writer_is_wait_ex; /* This is TRUE if the writer field is RW_LOCK_WAIT_EX; this field is located far from the memory update hotspot fields which === modified file 'storage/xtradb/include/sync0rw.ic' --- a/storage/xtradb/include/sync0rw.ic 2009-06-09 15:08:46 +0000 +++ b/storage/xtradb/include/sync0rw.ic 2009-06-11 12:53:26 +0000 @@ -68,34 +68,6 @@ rw_lock_remove_debug_info( /************************************************************************ Accessor functions for rw lock. */ - -#ifdef INNODB_RW_LOCKS_USE_ATOMICS -UNIV_INLINE -ulint -rw_lock_get_s_waiters( -/*================*/ - /* out: 1 if waiters, 0 otherwise */ - rw_lock_t* lock) /* in: rw-lock */ -{ - return(lock->s_waiters); -} -UNIV_INLINE -ulint -rw_lock_get_x_waiters( -/*================*/ - rw_lock_t* lock) -{ - return(lock->x_waiters); -} -UNIV_INLINE -ulint -rw_lock_get_wx_waiters( -/*================*/ - rw_lock_t* lock) -{ - return(lock->wait_ex_waiters); -} -#else /* !INNODB_RW_LOCKS_USE_ATOMICS */ UNIV_INLINE ulint rw_lock_get_waiters( @@ -105,95 +77,40 @@ rw_lock_get_waiters( { return(lock->waiters); } -#endif /* INNODB_RW_LOCKS_USE_ATOMICS */ - /************************************************************************ Sets lock->waiters to 1. It is not an error if lock->waiters is already 1. On platforms where ATOMIC builtins are used this function enforces a memory barrier. */ -#ifdef INNODB_RW_LOCKS_USE_ATOMICS -UNIV_INLINE -void -rw_lock_set_s_waiter_flag( -/*====================*/ - rw_lock_t* lock) /* in: rw-lock */ -{ - // os_compare_and_swap(&lock->s_waiters, 0, 1); - __sync_lock_test_and_set(&lock->s_waiters, 1); -} -UNIV_INLINE -void -rw_lock_set_x_waiter_flag( -/*====================*/ - rw_lock_t* lock) /* in: rw-lock */ -{ - // os_compare_and_swap(&lock->x_waiters, 0, 1); - __sync_lock_test_and_set(&lock->x_waiters, 1); -} -UNIV_INLINE -void -rw_lock_set_wx_waiter_flag( -/*====================*/ - rw_lock_t* lock) /* in: rw-lock */ -{ - // os_compare_and_swap(&lock->wait_ex_waiters, 0, 1); - __sync_lock_test_and_set(&lock->wait_ex_waiters, 1); -} -#else /* !INNODB_RW_LOCKS_USE_ATOMICS */ UNIV_INLINE void rw_lock_set_waiter_flag( /*====================*/ rw_lock_t* lock) /* in: rw-lock */ { +#ifdef INNODB_RW_LOCKS_USE_ATOMICS + os_compare_and_swap(&lock->waiters, 0, 1); +#else /* INNODB_RW_LOCKS_USE_ATOMICS */ lock->waiters = 1; -} #endif /* INNODB_RW_LOCKS_USE_ATOMICS */ +} /************************************************************************ Resets lock->waiters to 0. It is not an error if lock->waiters is already 0. On platforms where ATOMIC builtins are used this function enforces a memory barrier. */ -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - -UNIV_INLINE -void -rw_lock_reset_s_waiter_flag( -/*======================*/ - rw_lock_t* lock) /* in: rw-lock */ -{ - // os_compare_and_swap(&lock->s_waiters, 1, 0); - __sync_lock_test_and_set(&lock->s_waiters, 0); -} -UNIV_INLINE -void -rw_lock_reset_x_waiter_flag( -/*======================*/ - rw_lock_t* lock) /* in: rw-lock */ -{ - // os_compare_and_swap(&lock->x_waiters, 1, 0); - __sync_lock_test_and_set(&lock->x_waiters, 0); -} -UNIV_INLINE -void -rw_lock_reset_wx_waiter_flag( -/*======================*/ - rw_lock_t* lock) /* in: rw-lock */ -{ - // os_compare_and_swap(&lock->wait_ex_waiters, 1, 0); - __sync_lock_test_and_set(&lock->wait_ex_waiters, 0); -} -#else /* !INNODB_RW_LOCKS_USE_ATOMICS */ UNIV_INLINE void rw_lock_reset_waiter_flag( /*======================*/ rw_lock_t* lock) /* in: rw-lock */ { +#ifdef INNODB_RW_LOCKS_USE_ATOMICS + os_compare_and_swap(&lock->waiters, 1, 0); +#else /* INNODB_RW_LOCKS_USE_ATOMICS */ lock->waiters = 0; -} #endif /* INNODB_RW_LOCKS_USE_ATOMICS */ +} /********************************************************************** Returns the write-status of the lock - this function made more sense @@ -204,17 +121,6 @@ rw_lock_get_writer( /*===============*/ rw_lock_t* lock) { -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - if (lock->writer == RW_LOCK_NOT_LOCKED) { - return(RW_LOCK_NOT_LOCKED); - } - - if (lock->writer_is_wait_ex) { - return(RW_LOCK_WAIT_EX); - } else { - return(RW_LOCK_EX); - } -#else lint lock_word = lock->lock_word; if(lock_word > 0) { /* return NOT_LOCKED in s-lock state, like the writer @@ -226,7 +132,6 @@ rw_lock_get_writer( ut_ad(lock_word > -X_LOCK_DECR); return(RW_LOCK_WAIT_EX); } -#endif } /********************************************************************** @@ -237,9 +142,6 @@ rw_lock_get_reader_count( /*=====================*/ rw_lock_t* lock) { -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - return(lock->reader_count); -#else lint lock_word = lock->lock_word; if(lock_word > 0) { /* s-locked, no x-waiters */ @@ -249,7 +151,6 @@ rw_lock_get_reader_count( return((ulint)(-lock_word)); } return(0); -#endif } #ifndef INNODB_RW_LOCKS_USE_ATOMICS @@ -273,16 +174,12 @@ rw_lock_get_x_lock_count( /* out: value of writer_count */ rw_lock_t* lock) /* in: rw-lock */ { -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - return(lock->writer_count); -#else lint lock_copy = lock->lock_word; /* If there is a reader, lock_word is not divisible by X_LOCK_DECR */ if(lock_copy > 0 || (-lock_copy) % X_LOCK_DECR != 0) { return(0); } return(((-lock_copy) / X_LOCK_DECR) + 1); -#endif } /********************************************************************** @@ -420,26 +317,11 @@ rw_lock_s_lock_low( const char* file_name, /* in: file name where lock requested */ ulint line) /* in: line where requested */ { -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - if (UNIV_LIKELY(rw_lock_get_writer(lock) == RW_LOCK_NOT_LOCKED)) { - /* try s-lock */ - if(__sync_sub_and_fetch(&(lock->lock_word),1) <= 0) { - /* fail */ - __sync_fetch_and_add(&(lock->lock_word),1); - return(FALSE); /* locking did not succeed */ - } - /* success */ - __sync_fetch_and_add(&(lock->reader_count),1); - } else { - return(FALSE); /* locking did not succeed */ - } -#else /* TODO: study performance of UNIV_LIKELY branch prediction hints. */ if (!rw_lock_lock_word_decr(lock, 1)) { /* Locking did not succeed */ return(FALSE); } -#endif #ifdef UNIV_SYNC_DEBUG rw_lock_add_debug_info(lock, pass, RW_LOCK_SHARED, file_name, line); @@ -464,17 +346,10 @@ rw_lock_s_lock_direct( const char* file_name, /* in: file name where requested */ ulint line) /* in: line where lock requested */ { -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - ut_ad(rw_lock_get_writer(lock) == RW_LOCK_NOT_LOCKED); - ut_ad(rw_lock_get_reader_count(lock) == 0); - - __sync_fetch_and_add(&(lock->reader_count),1); -#else ut_ad(lock->lock_word == X_LOCK_DECR); /* Indicate there is a new reader by decrementing lock_word */ lock->lock_word--; -#endif lock->last_s_file_name = file_name; lock->last_s_line = line; @@ -497,17 +372,9 @@ rw_lock_x_lock_direct( ulint line) /* in: line where lock requested */ { ut_ad(rw_lock_validate(lock)); -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - ut_ad(rw_lock_get_reader_count(lock) == 0); - ut_ad(rw_lock_get_writer(lock) == RW_LOCK_NOT_LOCKED); - - lock->writer = RW_LOCK_EX; - __sync_fetch_and_add(&(lock->writer_count),1); -#else ut_ad(lock->lock_word == X_LOCK_DECR); lock->lock_word -= X_LOCK_DECR; -#endif lock->writer_thread = os_thread_get_curr_id(); lock->recursive = TRUE; @@ -581,56 +448,7 @@ rw_lock_x_lock_func_nowait( ibool success; #ifdef INNODB_RW_LOCKS_USE_ATOMICS - success = FALSE; - if ((lock->reader_count == 0) - && rw_lock_get_writer(lock) == RW_LOCK_NOT_LOCKED) { -retry_x_lock: - /* try x-lock */ - if(__sync_sub_and_fetch(&(lock->lock_word), - X_LOCK_DECR) == 0) { - /* success */ - /* try to lock writer */ - if(__sync_lock_test_and_set(&(lock->writer),RW_LOCK_EX) - == RW_LOCK_NOT_LOCKED) { - /* success */ - lock->writer_thread = curr_thread; - lock->recursive = TRUE; - lock->writer_is_wait_ex = FALSE; - /* next function may work as memory barrier */ - relock: - __sync_fetch_and_add(&(lock->writer_count),1); - -#ifdef UNIV_SYNC_DEBUG - rw_lock_add_debug_info(lock, 0, RW_LOCK_EX, file_name, line); -#endif - - lock->last_x_file_name = file_name; - lock->last_x_line = line; - - ut_ad(rw_lock_validate(lock)); - - return(TRUE); - } else { - /* x-unlock */ - __sync_fetch_and_add(&(lock->lock_word), - X_LOCK_DECR); - } - } else { - /* fail (x-lock) */ - if (__sync_fetch_and_add(&(lock->lock_word),X_LOCK_DECR) - == 0) - goto retry_x_lock; - } - } - - if (lock->recursive - && os_thread_eq(lock->writer_thread, curr_thread)) { - goto relock; - } - - //ut_ad(rw_lock_validate(lock)); - - return(FALSE); + success = os_compare_and_swap(&(lock->lock_word), X_LOCK_DECR, 0); #else success = FALSE; @@ -641,6 +459,7 @@ retry_x_lock: } mutex_exit(&(lock->mutex)); +#endif if (success) { rw_lock_set_writer_id_and_recursion_flag(lock, TRUE); @@ -667,7 +486,6 @@ retry_x_lock: ut_ad(rw_lock_validate(lock)); return(TRUE); -#endif } /********************************************************************** @@ -683,31 +501,6 @@ rw_lock_s_unlock_func( #endif ) { -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - ibool last = FALSE; - - ut_a(lock->reader_count > 0); - - /* unlock lock_word */ - __sync_fetch_and_add(&(lock->lock_word),1); - - if(__sync_sub_and_fetch(&(lock->reader_count),1) == 0) { - last = TRUE; - } - -#ifdef UNIV_SYNC_DEBUG - rw_lock_remove_debug_info(lock, pass, RW_LOCK_SHARED); -#endif - - if (UNIV_UNLIKELY(last && __sync_lock_test_and_set(&lock->wait_ex_waiters, 0))) { - os_event_set(lock->wait_ex_event); - sync_array_object_signalled(sync_primary_wait_array); - } - else if (UNIV_UNLIKELY(last && __sync_lock_test_and_set(&lock->x_waiters, 0))) { - os_event_set(lock->x_event); - sync_array_object_signalled(sync_primary_wait_array); - } -#else ut_ad((lock->lock_word % X_LOCK_DECR) != 0); #ifdef UNIV_SYNC_DEBUG @@ -724,7 +517,6 @@ rw_lock_s_unlock_func( sync_array_object_signalled(sync_primary_wait_array); } -#endif ut_ad(rw_lock_validate(lock)); @@ -742,19 +534,6 @@ rw_lock_s_unlock_direct( /*====================*/ rw_lock_t* lock) /* in: rw-lock */ { -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - ut_ad(lock->reader_count > 0); - - __sync_sub_and_fetch(&(lock->reader_count),1); - -#ifdef UNIV_SYNC_DEBUG - rw_lock_remove_debug_info(lock, 0, RW_LOCK_SHARED); -#endif - - ut_ad(!lock->s_waiters); - ut_ad(!lock->x_waiters); - ut_ad(!lock->wait_ex_waiters); -#else ut_ad(lock->lock_word < X_LOCK_DECR); #ifdef UNIV_SYNC_DEBUG @@ -765,7 +544,6 @@ rw_lock_s_unlock_direct( lock->lock_word++; ut_ad(!lock->waiters); -#endif ut_ad(rw_lock_validate(lock)); #ifdef UNIV_SYNC_PERF_STAT rw_s_exit_count++; @@ -785,49 +563,6 @@ rw_lock_x_unlock_func( #endif ) { -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - ibool last = FALSE; - ibool s_sg = FALSE; - ibool x_sg = FALSE; - - ut_ad(lock->writer_count > 0); - - if(__sync_sub_and_fetch(&(lock->writer_count),1) == 0) { - last = TRUE; - } - - if (last) { - /* unlock lock_word */ - __sync_fetch_and_add(&(lock->lock_word),X_LOCK_DECR); - - lock->recursive = FALSE; - /* FIXME: It is a value of bad manners for pthread. - But we shouldn't keep an ID of not-owner. */ - lock->writer_thread = -1; - __sync_lock_test_and_set(&(lock->writer),RW_LOCK_NOT_LOCKED); - } - -#ifdef UNIV_SYNC_DEBUG - rw_lock_remove_debug_info(lock, pass, RW_LOCK_EX); -#endif - if (last) { - if(__sync_lock_test_and_set(&lock->s_waiters, 0)){ - s_sg = TRUE; - } - if(__sync_lock_test_and_set(&lock->x_waiters, 0)){ - x_sg = TRUE; - } - } - - if (UNIV_UNLIKELY(s_sg)) { - os_event_set(lock->s_event); - sync_array_object_signalled(sync_primary_wait_array); - } - if (UNIV_UNLIKELY(x_sg)) { - os_event_set(lock->x_event); - sync_array_object_signalled(sync_primary_wait_array); - } -#else ut_ad((lock->lock_word % X_LOCK_DECR) == 0); /* lock->recursive flag also indicates if lock->writer_thread is @@ -858,7 +593,6 @@ rw_lock_x_unlock_func( } } -#endif ut_ad(rw_lock_validate(lock)); #ifdef UNIV_SYNC_PERF_STAT @@ -878,19 +612,6 @@ rw_lock_x_unlock_direct( /* Reset the exclusive lock if this thread no longer has an x-mode lock */ -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - if(__sync_sub_and_fetch(&(lock->writer_count),1) == 0) { - lock->writer = RW_LOCK_NOT_LOCKED; - } - -#ifdef UNIV_SYNC_DEBUG - rw_lock_remove_debug_info(lock, 0, RW_LOCK_EX); -#endif - - ut_ad(!lock->s_waiters); - ut_ad(!lock->x_waiters); - ut_ad(!lock->wait_ex_waiters); -#else ut_ad((lock->lock_word % X_LOCK_DECR) == 0); #ifdef UNIV_SYNC_DEBUG @@ -906,7 +627,6 @@ rw_lock_x_unlock_direct( lock->lock_word += X_LOCK_DECR; ut_ad(!lock->waiters); -#endif ut_ad(rw_lock_validate(lock)); #ifdef UNIV_SYNC_PERF_STAT === modified file 'storage/xtradb/include/trx0sys.h' --- a/storage/xtradb/include/trx0sys.h 2009-03-26 06:11:11 +0000 +++ b/storage/xtradb/include/trx0sys.h 2009-04-07 20:51:15 +0000 @@ -49,6 +49,9 @@ or there was no master log position info extern char trx_sys_mysql_master_log_name[]; extern ib_int64_t trx_sys_mysql_master_log_pos; +extern char trx_sys_mysql_relay_log_name[]; +extern ib_int64_t trx_sys_mysql_relay_log_pos; + /* If this MySQL server uses binary logging, after InnoDB has been inited and if it has done a crash recovery, we store the binlog file name and position here. If .._pos is -1, it means there was no binlog position info inside @@ -290,7 +293,7 @@ UNIV_INTERN void trx_sys_update_mysql_binlog_offset( /*===============================*/ - const char* file_name,/* in: MySQL log file name */ + const char* file_name_in,/* in: MySQL log file name */ ib_int64_t offset, /* in: position in that log file */ ulint field, /* in: offset of the MySQL log info field in the trx sys header */ @@ -421,6 +424,7 @@ therefore 256; each slot is currently 8 #define TRX_SYS_N_RSEGS 256 #define TRX_SYS_MYSQL_LOG_NAME_LEN 512 +#define TRX_SYS_MYSQL_MASTER_LOG_NAME_LEN 480 /* (500 - 12) is dead line. */ #define TRX_SYS_MYSQL_LOG_MAGIC_N 873422344 #if UNIV_PAGE_SIZE < 4096 @@ -429,6 +433,7 @@ therefore 256; each slot is currently 8 /* The offset of the MySQL replication info in the trx system header; this contains the same fields as TRX_SYS_MYSQL_LOG_INFO below */ #define TRX_SYS_MYSQL_MASTER_LOG_INFO (UNIV_PAGE_SIZE - 2000) +#define TRX_SYS_MYSQL_RELAY_LOG_INFO (UNIV_PAGE_SIZE - 1500) /* The offset of the MySQL binlog offset info in the trx system header */ #define TRX_SYS_MYSQL_LOG_INFO (UNIV_PAGE_SIZE - 1000) === modified file 'storage/xtradb/include/trx0trx.h' --- a/storage/xtradb/include/trx0trx.h 2009-03-26 06:11:11 +0000 +++ b/storage/xtradb/include/trx0trx.h 2009-04-07 20:51:15 +0000 @@ -579,6 +579,21 @@ struct trx_struct{ ib_int64_t mysql_log_offset;/* if MySQL binlog is used, this field contains the end offset of the binlog entry */ + const char* mysql_master_log_file_name; + /* if the database server is a MySQL + replication slave, we have here the + master binlog name up to which + replication has processed; otherwise + this is a pointer to a null + character */ + ib_int64_t mysql_master_log_pos; + /* if the database server is a MySQL + replication slave, this is the + position in the log file up to which + replication has processed */ + const char* mysql_relay_log_file_name; + ib_int64_t mysql_relay_log_pos; + os_thread_id_t mysql_thread_id;/* id of the MySQL thread associated with this transaction object */ ulint mysql_process_no;/* since in Linux, 'top' reports === modified file 'storage/xtradb/include/univ.i' --- a/storage/xtradb/include/univ.i 2009-06-09 15:08:46 +0000 +++ b/storage/xtradb/include/univ.i 2009-06-11 12:53:26 +0000 @@ -35,7 +35,7 @@ Created 1/20/1994 Heikki Tuuri #define INNODB_VERSION_MAJOR 1 #define INNODB_VERSION_MINOR 0 #define INNODB_VERSION_BUGFIX 3 -#define PERCONA_INNODB_VERSION 3 +#define PERCONA_INNODB_VERSION 5a /* The following is the InnoDB version as shown in SELECT plugin_version FROM information_schema.plugins; === modified file 'storage/xtradb/include/ut0auxconf.h' --- a/storage/xtradb/include/ut0auxconf.h 2009-03-26 06:11:11 +0000 +++ b/storage/xtradb/include/ut0auxconf.h 2009-04-27 04:54:14 +0000 @@ -12,8 +12,3 @@ If by any chance Makefile.in and ./confi the hack from Makefile.in wiped away then the "real" check from plug.in will take over. */ -/* This is temprary fix for http://bugs.mysql.com/43740 */ -/* force to enable */ -#ifdef HAVE_GCC_ATOMIC_BUILTINS -#define HAVE_ATOMIC_PTHREAD_T -#endif === modified file 'storage/xtradb/sync/sync0arr.c' --- a/storage/xtradb/sync/sync0arr.c 2009-03-26 06:11:11 +0000 +++ b/storage/xtradb/sync/sync0arr.c 2009-04-27 04:54:14 +0000 @@ -331,15 +331,8 @@ sync_cell_get_event( return(((mutex_t *) cell->wait_object)->event); } else if (type == RW_LOCK_WAIT_EX) { return(((rw_lock_t *) cell->wait_object)->wait_ex_event); -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - } else if (type == RW_LOCK_SHARED) { - return(((rw_lock_t *) cell->wait_object)->s_event); - } else { /* RW_LOCK_EX */ - return(((rw_lock_t *) cell->wait_object)->x_event); -#else } else { /* RW_LOCK_SHARED and RW_LOCK_EX wait on the same event */ return(((rw_lock_t *) cell->wait_object)->event); -#endif } } @@ -483,7 +476,7 @@ sync_array_cell_print( fprintf(file, "--Thread %lu has waited at %s line %lu" - " for %.2f seconds the semaphore:\n", + " for %#.5g seconds the semaphore:\n", (ulong) os_thread_pf(cell->thread), cell->file, (ulong) cell->line, difftime(time(NULL), cell->reservation_time)); @@ -510,7 +503,7 @@ sync_array_cell_print( || type == RW_LOCK_WAIT_EX || type == RW_LOCK_SHARED) { - fputs(type == RW_LOCK_SHARED ? "S-lock on" : "X-lock on", file); + fputs(type == RW_LOCK_EX ? "X-lock on" : "S-lock on", file); rwlock = cell->old_wait_rw_lock; @@ -530,21 +523,12 @@ sync_array_cell_print( } fprintf(file, -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - "number of readers %lu, s_waiters flag %lu, x_waiters flag %lu, " -#else "number of readers %lu, waiters flag %lu, " -#endif "lock_word: %lx\n" "Last time read locked in file %s line %lu\n" "Last time write locked in file %s line %lu\n", (ulong) rw_lock_get_reader_count(rwlock), -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - (ulong) rwlock->s_waiters, - (ulong) (rwlock->x_waiters || rwlock->wait_ex_waiters), -#else (ulong) rwlock->waiters, -#endif rwlock->lock_word, rwlock->last_s_file_name, (ulong) rwlock->last_s_line, === modified file 'storage/xtradb/sync/sync0rw.c' --- a/storage/xtradb/sync/sync0rw.c 2009-03-26 06:11:11 +0000 +++ b/storage/xtradb/sync/sync0rw.c 2009-04-27 04:54:14 +0000 @@ -250,17 +250,7 @@ rw_lock_create_func( #endif /* INNODB_RW_LOCKS_USE_ATOMICS */ lock->lock_word = X_LOCK_DECR; -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - lock->s_waiters = 0; - lock->x_waiters = 0; - lock->wait_ex_waiters = 0; - lock->writer = RW_LOCK_NOT_LOCKED; - lock->writer_count = 0; - lock->reader_count = 0; - lock->writer_is_wait_ex = FALSE; -#else lock->waiters = 0; -#endif /* We set this value to signify that lock->writer_thread contains garbage at initialization and cannot be used for @@ -283,12 +273,7 @@ rw_lock_create_func( lock->last_x_file_name = "not yet reserved"; lock->last_s_line = 0; lock->last_x_line = 0; -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - lock->s_event = os_event_create(NULL); - lock->x_event = os_event_create(NULL); -#else lock->event = os_event_create(NULL); -#endif lock->wait_ex_event = os_event_create(NULL); mutex_enter(&rw_lock_list_mutex); @@ -314,15 +299,7 @@ rw_lock_free( rw_lock_t* lock) /* in: rw-lock */ { ut_ad(rw_lock_validate(lock)); -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - ut_a(rw_lock_get_writer(lock) == RW_LOCK_NOT_LOCKED); - ut_a(rw_lock_get_s_waiters(lock) == 0); - ut_a(rw_lock_get_x_waiters(lock) == 0); - ut_a(rw_lock_get_wx_waiters(lock) == 0); - ut_a(rw_lock_get_reader_count(lock) == 0); -#else ut_a(lock->lock_word == X_LOCK_DECR); -#endif lock->magic_n = 0; @@ -331,12 +308,7 @@ rw_lock_free( #endif /* INNODB_RW_LOCKS_USE_ATOMICS */ mutex_enter(&rw_lock_list_mutex); -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - os_event_free(lock->s_event); - os_event_free(lock->x_event); -#else os_event_free(lock->event); -#endif os_event_free(lock->wait_ex_event); @@ -364,23 +336,12 @@ rw_lock_validate( { ut_a(lock); -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - ut_a(lock->magic_n == RW_LOCK_MAGIC_N); - - ulint waiters = rw_lock_get_s_waiters(lock); - ut_a(waiters == 0 || waiters == 1); - waiters = rw_lock_get_x_waiters(lock); - ut_a(waiters == 0 || waiters == 1); - waiters = rw_lock_get_wx_waiters(lock); - ut_a(waiters == 0 || waiters == 1); -#else ulint waiters = rw_lock_get_waiters(lock); lint lock_word = lock->lock_word; ut_a(lock->magic_n == RW_LOCK_MAGIC_N); ut_a(waiters == 0 || waiters == 1); ut_a(lock_word > -X_LOCK_DECR ||(-lock_word) % X_LOCK_DECR == 0); -#endif return(TRUE); } @@ -410,12 +371,7 @@ rw_lock_s_lock_spin( lock_loop: /* Spin waiting for the writer field to become free */ -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - while (i < SYNC_SPIN_ROUNDS - && rw_lock_get_writer(lock) != RW_LOCK_NOT_LOCKED) { -#else while (i < SYNC_SPIN_ROUNDS && lock->lock_word <= 0) { -#endif if (srv_spin_wait_delay) { ut_delay(ut_rnd_interval(0, srv_spin_wait_delay)); } @@ -456,29 +412,12 @@ lock_loop: /* Set waiters before checking lock_word to ensure wake-up signal is sent. This may lead to some unnecessary signals. */ -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - rw_lock_set_s_waiter_flag(lock); -#else rw_lock_set_waiter_flag(lock); -#endif -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - for (i = 0; i < 4; i++) { -#endif if (TRUE == rw_lock_s_lock_low(lock, pass, file_name, line)) { sync_array_free_cell(sync_primary_wait_array, index); return; /* Success */ } -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - } - - /* If wait_ex_waiter stalls, wakes it. */ - if (lock->reader_count == 0 - && __sync_lock_test_and_set(&lock->wait_ex_waiters, 0)) { - os_event_set(lock->wait_ex_event); - sync_array_object_signalled(sync_primary_wait_array); - } -#endif if (srv_print_latch_waits) { fprintf(stderr, @@ -517,12 +456,7 @@ rw_lock_x_lock_move_ownership( { ut_ad(rw_lock_is_locked(lock, RW_LOCK_EX)); -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - lock->writer_thread = os_thread_get_curr_id(); - lock->recursive = TRUE; -#else rw_lock_set_writer_id_and_recursion_flag(lock, TRUE); -#endif } /********************************************************************** @@ -596,11 +530,7 @@ rw_lock_x_lock_wait( /********************************************************************** Low-level function for acquiring an exclusive lock. */ UNIV_INLINE -#ifdef INNODB_RW_LOCKS_USE_ATOMICS -ulint -#else ibool -#endif rw_lock_x_lock_low( /*===============*/ /* out: RW_LOCK_NOT_LOCKED if did @@ -613,90 +543,6 @@ rw_lock_x_lock_low( { os_thread_id_t curr_thread = os_thread_get_curr_id(); -#ifdef INNODB_RW_LOCKS_USE_ATOMICS -retry_writer: - /* try to lock writer */ - if(__sync_lock_test_and_set(&(lock->writer),RW_LOCK_EX) - == RW_LOCK_NOT_LOCKED) { - /* success */ - /* obtain RW_LOCK_WAIT_EX right */ - lock->writer_thread = curr_thread; - lock->recursive = pass ? FALSE : TRUE; - lock->writer_is_wait_ex = TRUE; - /* atomic operation may be safer about memory order. */ - __sync_synchronize(); -#ifdef UNIV_SYNC_DEBUG - rw_lock_add_debug_info(lock, pass, RW_LOCK_WAIT_EX, - file_name, line); -#endif - } - - if (!os_thread_eq(lock->writer_thread, curr_thread)) { - return(RW_LOCK_NOT_LOCKED); - } - - switch(rw_lock_get_writer(lock)) { - case RW_LOCK_WAIT_EX: - /* have right to try x-lock */ -retry_x_lock: - /* try x-lock */ - if(__sync_sub_and_fetch(&(lock->lock_word), - X_LOCK_DECR) == 0) { - /* success */ - lock->recursive = pass ? FALSE : TRUE; - lock->writer_is_wait_ex = FALSE; - __sync_fetch_and_add(&(lock->writer_count),1); - -#ifdef UNIV_SYNC_DEBUG - rw_lock_remove_debug_info(lock, pass, RW_LOCK_WAIT_EX); - rw_lock_add_debug_info(lock, pass, RW_LOCK_EX, - file_name, line); -#endif - - lock->last_x_file_name = file_name; - lock->last_x_line = line; - - /* Locking succeeded, we may return */ - return(RW_LOCK_EX); - } else if(__sync_fetch_and_add(&(lock->lock_word), - X_LOCK_DECR) == 0) { - /* retry x-lock */ - goto retry_x_lock; - } - - /* There are readers, we have to wait */ - return(RW_LOCK_WAIT_EX); - - break; - - case RW_LOCK_EX: - /* already have x-lock */ - if (lock->recursive && (pass == 0)) { - __sync_fetch_and_add(&(lock->writer_count),1); - -#ifdef UNIV_SYNC_DEBUG - rw_lock_add_debug_info(lock, pass, RW_LOCK_EX, file_name, - line); -#endif - - lock->last_x_file_name = file_name; - lock->last_x_line = line; - - /* Locking succeeded, we may return */ - return(RW_LOCK_EX); - } - - return(RW_LOCK_NOT_LOCKED); - - break; - - default: /* RW_LOCK_NOT_LOCKED? maybe impossible */ - goto retry_writer; - } - - /* Locking did not succeed */ - return(RW_LOCK_NOT_LOCKED); -#else if (rw_lock_lock_word_decr(lock, X_LOCK_DECR)) { /* lock->recursive also tells us if the writer_thread @@ -734,7 +580,6 @@ retry_x_lock: lock->last_x_line = (unsigned int) line; return(TRUE); -#endif } /********************************************************************** @@ -759,55 +604,18 @@ rw_lock_x_lock_func( ulint index; /* index of the reserved wait cell */ ulint i; /* spin round count */ ibool spinning = FALSE; -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - ulint state = RW_LOCK_NOT_LOCKED; /* lock state acquired */ - ulint prev_state = RW_LOCK_NOT_LOCKED; -#endif ut_ad(rw_lock_validate(lock)); i = 0; lock_loop: -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - prev_state = state; - state = rw_lock_x_lock_low(lock, pass, file_name, line); - -lock_loop_2: - if (state != prev_state) i=0; /* if progress, reset counter. */ - if (state == RW_LOCK_EX) { -#else if (rw_lock_x_lock_low(lock, pass, file_name, line)) { -#endif rw_x_spin_round_count += i; return; /* Locking succeeded */ -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - } else if (state == RW_LOCK_WAIT_EX) { - - if (!spinning) { - spinning = TRUE; - rw_x_spin_wait_count++; - } - - /* Spin waiting for the reader count field to become zero */ - while (i < SYNC_SPIN_ROUNDS - && lock->lock_word != X_LOCK_DECR) { - if (srv_spin_wait_delay) { - ut_delay(ut_rnd_interval(0, - srv_spin_wait_delay)); - } - - i++; - } - if (i == SYNC_SPIN_ROUNDS) { - os_thread_yield(); - } else { - goto lock_loop; - } -#endif } else { if (!spinning) { @@ -817,11 +625,7 @@ lock_loop_2: /* Spin waiting for the lock_word to become free */ while (i < SYNC_SPIN_ROUNDS -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - && rw_lock_get_writer(lock) != RW_LOCK_NOT_LOCKED) { -#else && lock->lock_word <= 0) { -#endif if (srv_spin_wait_delay) { ut_delay(ut_rnd_interval(0, srv_spin_wait_delay)); @@ -848,46 +652,18 @@ lock_loop_2: sync_array_reserve_cell(sync_primary_wait_array, lock, -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - (state == RW_LOCK_WAIT_EX) - ? RW_LOCK_WAIT_EX : RW_LOCK_EX, -#else RW_LOCK_EX, -#endif file_name, line, &index); /* Waiters must be set before checking lock_word, to ensure signal is sent. This could lead to a few unnecessary wake-up signals. */ -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - if (state == RW_LOCK_WAIT_EX) { - rw_lock_set_wx_waiter_flag(lock); - } else { - rw_lock_set_x_waiter_flag(lock); - } -#else rw_lock_set_waiter_flag(lock); -#endif -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - for (i = 0; i < 4; i++) { - prev_state = state; - state = rw_lock_x_lock_low(lock, pass, file_name, line); - if (state == RW_LOCK_EX) { - sync_array_free_cell(sync_primary_wait_array, index); - return; /* Locking succeeded */ - } else if (state != prev_state) { - /* retry! */ - sync_array_free_cell(sync_primary_wait_array, index); - goto lock_loop_2; - } - } -#else if (rw_lock_x_lock_low(lock, pass, file_name, line)) { sync_array_free_cell(sync_primary_wait_array, index); return; /* Locking succeeded */ } -#endif if (srv_print_latch_waits) { fprintf(stderr, @@ -1138,24 +914,11 @@ rw_lock_list_print_info( fprintf(file, "RW-LOCK: %p ", (void*) lock); -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - if (rw_lock_get_s_waiters(lock)) { - fputs(" s_waiters for the lock exist", file); - } - if (rw_lock_get_x_waiters(lock)) { - fputs(" x_waiters for the lock exist", file); - } - if (rw_lock_get_wx_waiters(lock)) { - fputs(" wait_ex_waiters for the lock exist", file); - } - putc('\n', file); -#else if (rw_lock_get_waiters(lock)) { fputs(" Waiters for the lock exist\n", file); } else { putc('\n', file); } -#endif info = UT_LIST_GET_FIRST(lock->debug_list); while (info != NULL) { @@ -1194,24 +957,11 @@ rw_lock_print( #endif if (lock->lock_word != X_LOCK_DECR) { -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - if (rw_lock_get_s_waiters(lock)) { - fputs(" s_waiters for the lock exist", stderr); - } - if (rw_lock_get_x_waiters(lock)) { - fputs(" x_waiters for the lock exist", stderr); - } - if (rw_lock_get_wx_waiters(lock)) { - fputs(" wait_ex_waiters for the lock exist", stderr); - } - putc('\n', stderr); -#else if (rw_lock_get_waiters(lock)) { fputs(" Waiters for the lock exist\n", stderr); } else { putc('\n', stderr); } -#endif info = UT_LIST_GET_FIRST(lock->debug_list); while (info != NULL) { === modified file 'storage/xtradb/trx/trx0sys.c' --- a/storage/xtradb/trx/trx0sys.c 2009-03-26 06:11:11 +0000 +++ b/storage/xtradb/trx/trx0sys.c 2009-04-25 20:23:06 +0000 @@ -69,9 +69,12 @@ file name and position here. We have suc up to this position. If .._pos is -1, it means no crash recovery was needed, or there was no master log position info inside InnoDB. */ -UNIV_INTERN char trx_sys_mysql_master_log_name[TRX_SYS_MYSQL_LOG_NAME_LEN]; +UNIV_INTERN char trx_sys_mysql_master_log_name[TRX_SYS_MYSQL_MASTER_LOG_NAME_LEN]; UNIV_INTERN ib_int64_t trx_sys_mysql_master_log_pos = -1; +UNIV_INTERN char trx_sys_mysql_relay_log_name[TRX_SYS_MYSQL_MASTER_LOG_NAME_LEN]; +UNIV_INTERN ib_int64_t trx_sys_mysql_relay_log_pos = -1; + /* If this MySQL server uses binary logging, after InnoDB has been inited and if it has done a crash recovery, we store the binlog file name and position here. If .._pos is -1, it means there was no binlog position info inside @@ -661,19 +664,24 @@ UNIV_INTERN void trx_sys_update_mysql_binlog_offset( /*===============================*/ - const char* file_name,/* in: MySQL log file name */ + const char* file_name_in,/* in: MySQL log file name */ ib_int64_t offset, /* in: position in that log file */ ulint field, /* in: offset of the MySQL log info field in the trx sys header */ mtr_t* mtr) /* in: mtr */ { trx_sysf_t* sys_header; + const char* file_name; - if (ut_strlen(file_name) >= TRX_SYS_MYSQL_LOG_NAME_LEN) { + if (ut_strlen(file_name_in) >= TRX_SYS_MYSQL_MASTER_LOG_NAME_LEN) { /* We cannot fit the name to the 512 bytes we have reserved */ + /* -> To store relay log file information, file_name must fit to the 480 bytes */ - return; + file_name = ""; + } + else { + file_name = file_name_in; } sys_header = trx_sysf_get(mtr); @@ -834,13 +842,26 @@ trx_sys_print_mysql_master_log_pos(void) + TRX_SYS_MYSQL_LOG_OFFSET_LOW), sys_header + TRX_SYS_MYSQL_MASTER_LOG_INFO + TRX_SYS_MYSQL_LOG_NAME); + + fprintf(stderr, + "InnoDB: and relay log file\n" + "InnoDB: position %lu %lu, file name %s\n", + (ulong) mach_read_from_4(sys_header + + TRX_SYS_MYSQL_RELAY_LOG_INFO + + TRX_SYS_MYSQL_LOG_OFFSET_HIGH), + (ulong) mach_read_from_4(sys_header + + TRX_SYS_MYSQL_RELAY_LOG_INFO + + TRX_SYS_MYSQL_LOG_OFFSET_LOW), + sys_header + TRX_SYS_MYSQL_RELAY_LOG_INFO + + TRX_SYS_MYSQL_LOG_NAME); + /* Copy the master log position info to global variables we can use in ha_innobase.cc to initialize glob_mi to right values */ ut_memcpy(trx_sys_mysql_master_log_name, sys_header + TRX_SYS_MYSQL_MASTER_LOG_INFO + TRX_SYS_MYSQL_LOG_NAME, - TRX_SYS_MYSQL_LOG_NAME_LEN); + TRX_SYS_MYSQL_MASTER_LOG_NAME_LEN); trx_sys_mysql_master_log_pos = (((ib_int64_t) mach_read_from_4( @@ -849,6 +870,19 @@ trx_sys_print_mysql_master_log_pos(void) + ((ib_int64_t) mach_read_from_4( sys_header + TRX_SYS_MYSQL_MASTER_LOG_INFO + TRX_SYS_MYSQL_LOG_OFFSET_LOW)); + + ut_memcpy(trx_sys_mysql_relay_log_name, + sys_header + TRX_SYS_MYSQL_RELAY_LOG_INFO + + TRX_SYS_MYSQL_LOG_NAME, + TRX_SYS_MYSQL_MASTER_LOG_NAME_LEN); + + trx_sys_mysql_relay_log_pos + = (((ib_int64_t) mach_read_from_4( + sys_header + TRX_SYS_MYSQL_RELAY_LOG_INFO + + TRX_SYS_MYSQL_LOG_OFFSET_HIGH)) << 32) + + ((ib_int64_t) mach_read_from_4( + sys_header + TRX_SYS_MYSQL_RELAY_LOG_INFO + + TRX_SYS_MYSQL_LOG_OFFSET_LOW)); mtr_commit(&mtr); } === modified file 'storage/xtradb/trx/trx0trx.c' --- a/storage/xtradb/trx/trx0trx.c 2009-03-26 06:11:11 +0000 +++ b/storage/xtradb/trx/trx0trx.c 2009-04-07 20:51:15 +0000 @@ -127,6 +127,10 @@ trx_create( trx->mysql_log_file_name = NULL; trx->mysql_log_offset = 0; + trx->mysql_master_log_file_name = ""; + trx->mysql_master_log_pos = 0; + trx->mysql_relay_log_file_name = ""; + trx->mysql_relay_log_pos = 0; mutex_create(&trx->undo_mutex, SYNC_TRX_UNDO); @@ -792,6 +796,19 @@ trx_commit_off_kernel( trx->mysql_log_file_name = NULL; } + if (trx->mysql_master_log_file_name[0] != '\0') { + /* This database server is a MySQL replication slave */ + trx_sys_update_mysql_binlog_offset( + trx->mysql_relay_log_file_name, + trx->mysql_relay_log_pos, + TRX_SYS_MYSQL_RELAY_LOG_INFO, &mtr); + trx_sys_update_mysql_binlog_offset( + trx->mysql_master_log_file_name, + trx->mysql_master_log_pos, + TRX_SYS_MYSQL_MASTER_LOG_INFO, &mtr); + trx->mysql_master_log_file_name = ""; + } + /* The following call commits the mini-transaction, making the whole transaction committed in the file-based world, at this log sequence number. The transaction becomes 'durable' when

1 0

[Maria-developers] bzr commit into MariaDB 5.1, with Maria 1.5:maria branch (knielsen:2703)
by knielsen＠knielsen-hq.org 10 Jun '09

10 Jun '09

#At lp:maria 2703 knielsen(a)knielsen-hq.org 2009-06-10 [merge] test merging latest XtraDB. Some conflicts as expected, seems to be ok. modified: storage/xtradb/btr/btr0cur.c storage/xtradb/btr/btr0sea.c storage/xtradb/buf/buf0buddy.c storage/xtradb/buf/buf0buf.c storage/xtradb/buf/buf0flu.c storage/xtradb/buf/buf0lru.c storage/xtradb/buf/buf0rea.c storage/xtradb/handler/ha_innodb.cc storage/xtradb/handler/i_s.cc storage/xtradb/handler/innodb_patch_info.h storage/xtradb/include/buf0buddy.h storage/xtradb/include/buf0buddy.ic storage/xtradb/include/buf0buf.h storage/xtradb/include/buf0buf.ic storage/xtradb/include/buf0flu.ic storage/xtradb/include/buf0lru.h storage/xtradb/include/sync0rw.h storage/xtradb/include/sync0rw.ic storage/xtradb/include/trx0sys.h storage/xtradb/include/trx0trx.h storage/xtradb/include/univ.i storage/xtradb/include/ut0auxconf.h storage/xtradb/sync/sync0arr.c storage/xtradb/sync/sync0rw.c storage/xtradb/trx/trx0sys.c storage/xtradb/trx/trx0trx.c === modified file 'storage/xtradb/btr/btr0cur.c' --- a/storage/xtradb/btr/btr0cur.c 2009-03-26 06:11:11 +0000 +++ b/storage/xtradb/btr/btr0cur.c 2009-05-04 02:45:47 +0000 @@ -3733,8 +3733,7 @@ btr_blob_free( mtr_commit(mtr); - //buf_pool_mutex_enter(); - mutex_enter(&LRU_list_mutex); + buf_pool_mutex_enter(); mutex_enter(&block->mutex); /* Only free the block if it is still allocated to @@ -3745,22 +3744,17 @@ btr_blob_free( && buf_block_get_space(block) == space && buf_block_get_page_no(block) == page_no) { - if (buf_LRU_free_block(&block->page, all, NULL, TRUE) + if (buf_LRU_free_block(&block->page, all, NULL) != BUF_LRU_FREED - && all && block->page.zip.data - /* Now, buf_LRU_free_block() may release mutex temporarily */ - && buf_block_get_state(block) == BUF_BLOCK_FILE_PAGE - && buf_block_get_space(block) == space - && buf_block_get_page_no(block) == page_no) { + && all && block->page.zip.data) { /* Attempt to deallocate the uncompressed page if the whole block cannot be deallocted. */ - buf_LRU_free_block(&block->page, FALSE, NULL, TRUE); + buf_LRU_free_block(&block->page, FALSE, NULL); } } - //buf_pool_mutex_exit(); - mutex_exit(&LRU_list_mutex); + buf_pool_mutex_exit(); mutex_exit(&block->mutex); } === modified file 'storage/xtradb/btr/btr0sea.c' --- a/storage/xtradb/btr/btr0sea.c 2009-03-26 06:11:11 +0000 +++ b/storage/xtradb/btr/btr0sea.c 2009-05-04 02:45:47 +0000 @@ -1731,8 +1731,7 @@ btr_search_validate(void) rec_offs_init(offsets_); rw_lock_x_lock(&btr_search_latch); - //buf_pool_mutex_enter(); - rw_lock_x_lock(&page_hash_latch); + buf_pool_mutex_enter(); cell_count = hash_get_n_cells(btr_search_sys->hash_index); @@ -1740,13 +1739,11 @@ btr_search_validate(void) /* We release btr_search_latch every once in a while to give other queries a chance to run. */ if ((i != 0) && ((i % chunk_size) == 0)) { - //buf_pool_mutex_exit(); - rw_lock_x_unlock(&page_hash_latch); + buf_pool_mutex_exit(); rw_lock_x_unlock(&btr_search_latch); os_thread_yield(); rw_lock_x_lock(&btr_search_latch); - //buf_pool_mutex_enter(); - rw_lock_x_lock(&page_hash_latch); + buf_pool_mutex_enter(); } node = hash_get_nth_cell(btr_search_sys->hash_index, i)->node; @@ -1853,13 +1850,11 @@ btr_search_validate(void) /* We release btr_search_latch every once in a while to give other queries a chance to run. */ if (i != 0) { - //buf_pool_mutex_exit(); - rw_lock_x_unlock(&page_hash_latch); + buf_pool_mutex_exit(); rw_lock_x_unlock(&btr_search_latch); os_thread_yield(); rw_lock_x_lock(&btr_search_latch); - //buf_pool_mutex_enter(); - rw_lock_x_lock(&page_hash_latch); + buf_pool_mutex_enter(); } if (!ha_validate(btr_search_sys->hash_index, i, end_index)) { @@ -1867,8 +1862,7 @@ btr_search_validate(void) } } - //buf_pool_mutex_exit(); - rw_lock_x_unlock(&page_hash_latch); + buf_pool_mutex_exit(); rw_lock_x_unlock(&btr_search_latch); if (UNIV_LIKELY_NULL(heap)) { mem_heap_free(heap); === modified file 'storage/xtradb/buf/buf0buddy.c' --- a/storage/xtradb/buf/buf0buddy.c 2009-03-26 06:11:11 +0000 +++ b/storage/xtradb/buf/buf0buddy.c 2009-05-04 04:32:30 +0000 @@ -131,8 +131,7 @@ buf_buddy_alloc_zip( { buf_page_t* bpage; - //ut_ad(buf_pool_mutex_own()); - ut_ad(mutex_own(&zip_free_mutex)); + ut_ad(buf_pool_mutex_own()); ut_a(i < BUF_BUDDY_SIZES); #if defined UNIV_DEBUG && !defined UNIV_DEBUG_VALGRIND @@ -178,19 +177,16 @@ static void buf_buddy_block_free( /*=================*/ - void* buf, /* in: buffer frame to deallocate */ - ibool have_page_hash_mutex) + void* buf) /* in: buffer frame to deallocate */ { const ulint fold = BUF_POOL_ZIP_FOLD_PTR(buf); buf_page_t* bpage; buf_block_t* block; - //ut_ad(buf_pool_mutex_own()); + ut_ad(buf_pool_mutex_own()); ut_ad(!mutex_own(&buf_pool_zip_mutex)); ut_a(!ut_align_offset(buf, UNIV_PAGE_SIZE)); - mutex_enter(&zip_hash_mutex); - HASH_SEARCH(hash, buf_pool->zip_hash, fold, buf_page_t*, bpage, ut_ad(buf_page_get_state(bpage) == BUF_BLOCK_MEMORY && bpage->in_zip_hash && !bpage->in_page_hash), @@ -202,14 +198,12 @@ buf_buddy_block_free( ut_d(bpage->in_zip_hash = FALSE); HASH_DELETE(buf_page_t, hash, buf_pool->zip_hash, fold, bpage); - mutex_exit(&zip_hash_mutex); - ut_d(memset(buf, 0, UNIV_PAGE_SIZE)); UNIV_MEM_INVALID(buf, UNIV_PAGE_SIZE); block = (buf_block_t*) bpage; mutex_enter(&block->mutex); - buf_LRU_block_free_non_file_page(block, have_page_hash_mutex); + buf_LRU_block_free_non_file_page(block); mutex_exit(&block->mutex); ut_ad(buf_buddy_n_frames > 0); @@ -225,7 +219,7 @@ buf_buddy_block_register( buf_block_t* block) /* in: buffer frame to allocate */ { const ulint fold = BUF_POOL_ZIP_FOLD(block); - //ut_ad(buf_pool_mutex_own()); + ut_ad(buf_pool_mutex_own()); ut_ad(!mutex_own(&buf_pool_zip_mutex)); buf_block_set_state(block, BUF_BLOCK_MEMORY); @@ -236,10 +230,7 @@ buf_buddy_block_register( ut_ad(!block->page.in_page_hash); ut_ad(!block->page.in_zip_hash); ut_d(block->page.in_zip_hash = TRUE); - - mutex_enter(&zip_hash_mutex); HASH_INSERT(buf_page_t, hash, buf_pool->zip_hash, fold, &block->page); - mutex_exit(&zip_hash_mutex); ut_d(buf_buddy_n_frames++); } @@ -293,28 +284,24 @@ buf_buddy_alloc_low( possibly NULL if lru==NULL */ ulint i, /* in: index of buf_pool->zip_free[], or BUF_BUDDY_SIZES */ - ibool* lru, /* in: pointer to a variable that will be assigned + ibool* lru) /* in: pointer to a variable that will be assigned TRUE if storage was allocated from the LRU list and buf_pool_mutex was temporarily released, or NULL if the LRU list should not be used */ - ibool have_page_hash_mutex) { buf_block_t* block; - //ut_ad(buf_pool_mutex_own()); + ut_ad(buf_pool_mutex_own()); ut_ad(!mutex_own(&buf_pool_zip_mutex)); if (i < BUF_BUDDY_SIZES) { /* Try to allocate from the buddy system. */ - mutex_enter(&zip_free_mutex); block = buf_buddy_alloc_zip(i); if (block) { goto func_exit; } - - mutex_exit(&zip_free_mutex); } /* Try allocating from the buf_pool->free list. */ @@ -331,31 +318,18 @@ buf_buddy_alloc_low( } /* Try replacing an uncompressed page in the buffer pool. */ - //buf_pool_mutex_exit(); - mutex_exit(&LRU_list_mutex); - if (have_page_hash_mutex) { - mutex_exit(&flush_list_mutex); - rw_lock_x_unlock(&page_hash_latch); - } + buf_pool_mutex_exit(); block = buf_LRU_get_free_block(0); *lru = TRUE; - //buf_pool_mutex_enter(); - mutex_enter(&LRU_list_mutex); - if (have_page_hash_mutex) { - mutex_enter(&flush_list_mutex); - rw_lock_x_lock(&page_hash_latch); - } + buf_pool_mutex_enter(); alloc_big: buf_buddy_block_register(block); - mutex_enter(&zip_free_mutex); block = buf_buddy_alloc_from(block->frame, i, BUF_BUDDY_SIZES); func_exit: buf_buddy_stat[i].used++; - mutex_exit(&zip_free_mutex); - return(block); } @@ -371,8 +345,7 @@ buf_buddy_relocate_block( { buf_page_t* b; - //ut_ad(buf_pool_mutex_own()); - ut_ad(mutex_own(&flush_list_mutex)); + ut_ad(buf_pool_mutex_own()); switch (buf_page_get_state(bpage)) { case BUF_BLOCK_ZIP_FREE: @@ -381,7 +354,7 @@ buf_buddy_relocate_block( case BUF_BLOCK_FILE_PAGE: case BUF_BLOCK_MEMORY: case BUF_BLOCK_REMOVE_HASH: - /* ut_error; */ /* optimistic */ + ut_error; case BUF_BLOCK_ZIP_DIRTY: /* Cannot relocate dirty pages. */ return(FALSE); @@ -391,17 +364,9 @@ buf_buddy_relocate_block( } mutex_enter(&buf_pool_zip_mutex); - mutex_enter(&zip_free_mutex); if (!buf_page_can_relocate(bpage)) { mutex_exit(&buf_pool_zip_mutex); - mutex_exit(&zip_free_mutex); - return(FALSE); - } - - if (bpage != buf_page_hash_get(bpage->space, bpage->offset)) { - mutex_exit(&buf_pool_zip_mutex); - mutex_exit(&zip_free_mutex); return(FALSE); } @@ -419,7 +384,6 @@ buf_buddy_relocate_block( } mutex_exit(&buf_pool_zip_mutex); - mutex_exit(&zip_free_mutex); return(TRUE); } @@ -432,15 +396,13 @@ buf_buddy_relocate( /* out: TRUE if relocated */ void* src, /* in: block to relocate */ void* dst, /* in: free block to relocate to */ - ulint i, /* in: index of buf_pool->zip_free[] */ - ibool have_page_hash_mutex) + ulint i) /* in: index of buf_pool->zip_free[] */ { buf_page_t* bpage; const ulint size = BUF_BUDDY_LOW << i; ullint usec = ut_time_us(NULL); - //ut_ad(buf_pool_mutex_own()); - ut_ad(mutex_own(&zip_free_mutex)); + ut_ad(buf_pool_mutex_own()); ut_ad(!mutex_own(&buf_pool_zip_mutex)); ut_ad(!ut_align_offset(src, size)); ut_ad(!ut_align_offset(dst, size)); @@ -459,17 +421,9 @@ buf_buddy_relocate( actually is a properly initialized buf_page_t object. */ if (size >= PAGE_ZIP_MIN_SIZE) { - if (!have_page_hash_mutex) - mutex_exit(&zip_free_mutex); - /* This is a compressed page. */ mutex_t* mutex; - if (!have_page_hash_mutex) { - mutex_enter(&LRU_list_mutex); - mutex_enter(&flush_list_mutex); - rw_lock_x_lock(&page_hash_latch); - } /* The src block may be split into smaller blocks, some of which may be free. Thus, the mach_read_from_4() calls below may attempt to read @@ -490,12 +444,6 @@ buf_buddy_relocate( added to buf_pool->page_hash yet. Obviously, it cannot be relocated. */ - if (!have_page_hash_mutex) { - mutex_enter(&zip_free_mutex); - mutex_exit(&LRU_list_mutex); - mutex_exit(&flush_list_mutex); - rw_lock_x_unlock(&page_hash_latch); - } return(FALSE); } @@ -505,19 +453,9 @@ buf_buddy_relocate( For the sake of simplicity, give up. */ ut_ad(page_zip_get_size(&bpage->zip) < size); - if (!have_page_hash_mutex) { - mutex_enter(&zip_free_mutex); - mutex_exit(&LRU_list_mutex); - mutex_exit(&flush_list_mutex); - rw_lock_x_unlock(&page_hash_latch); - } return(FALSE); } - /* To keep latch order */ - if (have_page_hash_mutex) - mutex_exit(&zip_free_mutex); - /* The block must have been allocated, but it may contain uninitialized data. */ UNIV_MEM_ASSERT_W(src, size); @@ -525,7 +463,6 @@ buf_buddy_relocate( mutex = buf_page_get_mutex(bpage); mutex_enter(mutex); - mutex_enter(&zip_free_mutex); if (buf_page_can_relocate(bpage)) { /* Relocate the compressed page. */ @@ -542,53 +479,17 @@ success: buddy_stat->relocated_usec += ut_time_us(NULL) - usec; } - - if (!have_page_hash_mutex) { - mutex_exit(&LRU_list_mutex); - mutex_exit(&flush_list_mutex); - rw_lock_x_unlock(&page_hash_latch); - } return(TRUE); } - if (!have_page_hash_mutex) { - mutex_exit(&LRU_list_mutex); - mutex_exit(&flush_list_mutex); - rw_lock_x_unlock(&page_hash_latch); - } - mutex_exit(mutex); } else if (i == buf_buddy_get_slot(sizeof(buf_page_t))) { /* This must be a buf_page_t object. */ UNIV_MEM_ASSERT_RW(src, size); - - mutex_exit(&zip_free_mutex); - - if (!have_page_hash_mutex) { - mutex_enter(&LRU_list_mutex); - mutex_enter(&flush_list_mutex); - rw_lock_x_lock(&page_hash_latch); - } - if (buf_buddy_relocate_block(src, dst)) { - mutex_enter(&zip_free_mutex); - - if (!have_page_hash_mutex) { - mutex_exit(&LRU_list_mutex); - mutex_exit(&flush_list_mutex); - rw_lock_x_unlock(&page_hash_latch); - } goto success; } - - mutex_enter(&zip_free_mutex); - - if (!have_page_hash_mutex) { - mutex_exit(&LRU_list_mutex); - mutex_exit(&flush_list_mutex); - rw_lock_x_unlock(&page_hash_latch); - } } return(FALSE); @@ -602,14 +503,12 @@ buf_buddy_free_low( /*===============*/ void* buf, /* in: block to be freed, must not be pointed to by the buffer pool */ - ulint i, /* in: index of buf_pool->zip_free[] */ - ibool have_page_hash_mutex) + ulint i) /* in: index of buf_pool->zip_free[] */ { buf_page_t* bpage; buf_page_t* buddy; - //ut_ad(buf_pool_mutex_own()); - ut_ad(mutex_own(&zip_free_mutex)); + ut_ad(buf_pool_mutex_own()); ut_ad(!mutex_own(&buf_pool_zip_mutex)); ut_ad(i <= BUF_BUDDY_SIZES); ut_ad(buf_buddy_stat[i].used > 0); @@ -620,7 +519,7 @@ recombine: ut_d(((buf_page_t*) buf)->state = BUF_BLOCK_ZIP_FREE); if (i == BUF_BUDDY_SIZES) { - buf_buddy_block_free(buf, have_page_hash_mutex); + buf_buddy_block_free(buf); return; } @@ -678,7 +577,7 @@ buddy_nonfree: #endif /* UNIV_DEBUG_VALGRIND */ /* The buddy is not free. Is there a free block of this size? */ - bpage = UT_LIST_GET_LAST(buf_pool->zip_free[i]); + bpage = UT_LIST_GET_FIRST(buf_pool->zip_free[i]); if (bpage) { /* Remove the block from the free list, because a successful @@ -688,7 +587,7 @@ buddy_nonfree: buf_buddy_remove_from_free(bpage, i); /* Try to relocate the buddy of buf to the free block. */ - if (buf_buddy_relocate(buddy, bpage, i, have_page_hash_mutex)) { + if (buf_buddy_relocate(buddy, bpage, i)) { ut_d(buddy->state = BUF_BLOCK_ZIP_FREE); goto buddy_free2; @@ -716,7 +615,7 @@ buddy_nonfree: } #endif /* UNIV_DEBUG && !UNIV_DEBUG_VALGRIND */ - if (buf_buddy_relocate(buddy, buf, i, have_page_hash_mutex)) { + if (buf_buddy_relocate(buddy, buf, i)) { buf = bpage; UNIV_MEM_VALID(bpage, BUF_BUDDY_LOW << i); === modified file 'storage/xtradb/buf/buf0buf.c' --- a/storage/xtradb/buf/buf0buf.c 2009-03-26 06:11:11 +0000 +++ b/storage/xtradb/buf/buf0buf.c 2009-05-04 04:32:30 +0000 @@ -244,12 +244,6 @@ UNIV_INTERN buf_pool_t* buf_pool = NULL; /* mutex protecting the buffer pool struct and control blocks, except the read-write lock in them */ UNIV_INTERN mutex_t buf_pool_mutex; -UNIV_INTERN mutex_t LRU_list_mutex; -UNIV_INTERN mutex_t flush_list_mutex; -UNIV_INTERN rw_lock_t page_hash_latch; -UNIV_INTERN mutex_t free_list_mutex; -UNIV_INTERN mutex_t zip_free_mutex; -UNIV_INTERN mutex_t zip_hash_mutex; /* mutex protecting the control blocks of compressed-only pages (of type buf_page_t, not buf_block_t) */ UNIV_INTERN mutex_t buf_pool_zip_mutex; @@ -670,9 +664,9 @@ buf_block_init( block->page.in_zip_hash = FALSE; block->page.in_flush_list = FALSE; block->page.in_free_list = FALSE; + block->in_unzip_LRU_list = FALSE; #endif /* UNIV_DEBUG */ block->page.in_LRU_list = FALSE; - block->in_unzip_LRU_list = FALSE; #if defined UNIV_AHI_DEBUG || defined UNIV_DEBUG block->n_pointers = 0; #endif /* UNIV_AHI_DEBUG || UNIV_DEBUG */ @@ -757,10 +751,8 @@ buf_chunk_init( memset(block->frame, '\0', UNIV_PAGE_SIZE); #endif /* Add the block to the free list */ - mutex_enter(&free_list_mutex); UT_LIST_ADD_LAST(list, buf_pool->free, (&block->page)); ut_d(block->page.in_free_list = TRUE); - mutex_exit(&free_list_mutex); block++; frame += UNIV_PAGE_SIZE; @@ -786,7 +778,7 @@ buf_chunk_contains_zip( ulint i; ut_ad(buf_pool); - //ut_ad(buf_pool_mutex_own()); + ut_ad(buf_pool_mutex_own()); block = chunk->blocks; @@ -840,7 +832,7 @@ buf_chunk_not_freed( ulint i; ut_ad(buf_pool); - //ut_ad(buf_pool_mutex_own()); /*optimistic...*/ + ut_ad(buf_pool_mutex_own()); block = chunk->blocks; @@ -873,7 +865,7 @@ buf_chunk_all_free( ulint i; ut_ad(buf_pool); - ut_ad(buf_pool_mutex_own()); /* but we need all mutex here */ + ut_ad(buf_pool_mutex_own()); block = chunk->blocks; @@ -899,7 +891,7 @@ buf_chunk_free( buf_block_t* block; const buf_block_t* block_end; - ut_ad(buf_pool_mutex_own()); /* but we need all mutex here */ + ut_ad(buf_pool_mutex_own()); block_end = chunk->blocks + chunk->size; @@ -911,10 +903,8 @@ buf_chunk_free( ut_ad(!block->in_unzip_LRU_list); ut_ad(!block->page.in_flush_list); /* Remove the block from the free list. */ - mutex_enter(&free_list_mutex); ut_ad(block->page.in_free_list); UT_LIST_REMOVE(list, buf_pool->free, (&block->page)); - mutex_exit(&free_list_mutex); /* Free the latches. */ mutex_free(&block->mutex); @@ -945,18 +935,8 @@ buf_pool_init(void) /* 1. Initialize general fields ------------------------------- */ mutex_create(&buf_pool_mutex, SYNC_BUF_POOL); - mutex_create(&LRU_list_mutex, SYNC_NO_ORDER_CHECK); - mutex_create(&flush_list_mutex, SYNC_NO_ORDER_CHECK); - rw_lock_create(&page_hash_latch, SYNC_NO_ORDER_CHECK); - mutex_create(&free_list_mutex, SYNC_NO_ORDER_CHECK); - mutex_create(&zip_free_mutex, SYNC_NO_ORDER_CHECK); - mutex_create(&zip_hash_mutex, SYNC_NO_ORDER_CHECK); - mutex_create(&buf_pool_zip_mutex, SYNC_BUF_BLOCK); - mutex_enter(&LRU_list_mutex); - mutex_enter(&flush_list_mutex); - rw_lock_x_lock(&page_hash_latch); buf_pool_mutex_enter(); buf_pool->n_chunks = 1; @@ -993,9 +973,6 @@ buf_pool_init(void) --------------------------- */ /* All fields are initialized by mem_zalloc(). */ - mutex_exit(&LRU_list_mutex); - mutex_exit(&flush_list_mutex); - rw_lock_x_unlock(&page_hash_latch); buf_pool_mutex_exit(); btr_search_sys_create(buf_pool->curr_size @@ -1128,11 +1105,7 @@ buf_relocate( buf_page_t* b; ulint fold; - //ut_ad(buf_pool_mutex_own()); - ut_ad(mutex_own(&LRU_list_mutex)); -#ifdef UNIV_SYNC_DEBUG - ut_ad(rw_lock_own(&page_hash_latch, RW_LOCK_EX)); -#endif + ut_ad(buf_pool_mutex_own()); ut_ad(mutex_own(buf_page_get_mutex(bpage))); ut_a(buf_page_get_io_fix(bpage) == BUF_IO_NONE); ut_a(bpage->buf_fix_count == 0); @@ -1213,8 +1186,7 @@ buf_pool_shrink( try_again: btr_search_disable(); /* Empty the adaptive hash index again */ - //buf_pool_mutex_enter(); - mutex_enter(&LRU_list_mutex); + buf_pool_mutex_enter(); shrink_again: if (buf_pool->n_chunks <= 1) { @@ -1285,7 +1257,7 @@ shrink_again: buf_LRU_make_block_old(&block->page); dirty++; - } else if (buf_LRU_free_block(&block->page, TRUE, NULL, FALSE) + } else if (buf_LRU_free_block(&block->page, TRUE, NULL) != BUF_LRU_FREED) { nonfree++; } @@ -1293,8 +1265,7 @@ shrink_again: mutex_exit(&block->mutex); } - //buf_pool_mutex_exit(); - mutex_exit(&LRU_list_mutex); + buf_pool_mutex_exit(); /* Request for a flush of the chunk if it helps. Do not flush if there are non-free blocks, since @@ -1343,8 +1314,7 @@ shrink_again: func_done: srv_buf_pool_old_size = srv_buf_pool_size; func_exit: - //buf_pool_mutex_exit(); - mutex_exit(&LRU_list_mutex); + buf_pool_mutex_exit(); btr_search_enable(); } @@ -1362,11 +1332,7 @@ buf_pool_page_hash_rebuild(void) hash_table_t* zip_hash; buf_page_t* b; - //buf_pool_mutex_enter(); - mutex_enter(&LRU_list_mutex); - mutex_enter(&flush_list_mutex); - rw_lock_x_lock(&page_hash_latch); - + buf_pool_mutex_enter(); /* Free, create, and populate the hash table. */ hash_table_free(buf_pool->page_hash); @@ -1446,10 +1412,7 @@ buf_pool_page_hash_rebuild(void) } } - //buf_pool_mutex_exit(); - mutex_exit(&LRU_list_mutex); - mutex_exit(&flush_list_mutex); - rw_lock_x_unlock(&page_hash_latch); + buf_pool_mutex_exit(); } /************************************************************************ @@ -1459,20 +1422,17 @@ void buf_pool_resize(void) /*=================*/ { - //buf_pool_mutex_enter(); - mutex_enter(&LRU_list_mutex); + buf_pool_mutex_enter(); if (srv_buf_pool_old_size == srv_buf_pool_size) { - //buf_pool_mutex_exit(); - mutex_exit(&LRU_list_mutex); + buf_pool_mutex_exit(); return; } if (srv_buf_pool_curr_size + 1048576 > srv_buf_pool_size) { - //buf_pool_mutex_exit(); - mutex_exit(&LRU_list_mutex); + buf_pool_mutex_exit(); /* Disable adaptive hash indexes and empty the index in order to free up memory in the buffer pool chunks. */ @@ -1506,8 +1466,7 @@ buf_pool_resize(void) } srv_buf_pool_old_size = srv_buf_pool_size; - //buf_pool_mutex_exit(); - mutex_exit(&LRU_list_mutex); + buf_pool_mutex_exit(); } buf_pool_page_hash_rebuild(); @@ -1529,14 +1488,12 @@ buf_block_make_young( if (buf_page_peek_if_too_old(bpage)) { - //buf_pool_mutex_enter(); - mutex_enter(&LRU_list_mutex); + buf_pool_mutex_enter(); /* There has been freeing activity in the LRU list: best to move to the head of the LRU list */ buf_LRU_make_block_young(bpage); - //buf_pool_mutex_exit(); - mutex_exit(&LRU_list_mutex); + buf_pool_mutex_exit(); } } @@ -1550,15 +1507,13 @@ buf_page_make_young( /*================*/ buf_page_t* bpage) /* in: buffer block of a file page */ { - //buf_pool_mutex_enter(); - mutex_enter(&LRU_list_mutex); + buf_pool_mutex_enter(); ut_a(buf_page_in_file(bpage)); buf_LRU_make_block_young(bpage); - //buf_pool_mutex_exit(); - mutex_exit(&LRU_list_mutex); + buf_pool_mutex_exit(); } /************************************************************************ @@ -1573,8 +1528,7 @@ buf_reset_check_index_page_at_flush( { buf_block_t* block; - //buf_pool_mutex_enter(); - rw_lock_s_lock(&page_hash_latch); + buf_pool_mutex_enter(); block = (buf_block_t*) buf_page_hash_get(space, offset); @@ -1582,8 +1536,7 @@ buf_reset_check_index_page_at_flush( block->check_index_page_at_flush = FALSE; } - //buf_pool_mutex_exit(); - rw_lock_s_unlock(&page_hash_latch); + buf_pool_mutex_exit(); } /************************************************************************ @@ -1602,8 +1555,7 @@ buf_page_peek_if_search_hashed( buf_block_t* block; ibool is_hashed; - //buf_pool_mutex_enter(); - rw_lock_s_lock(&page_hash_latch); + buf_pool_mutex_enter(); block = (buf_block_t*) buf_page_hash_get(space, offset); @@ -1613,8 +1565,7 @@ buf_page_peek_if_search_hashed( is_hashed = block->is_hashed; } - //buf_pool_mutex_exit(); - rw_lock_s_unlock(&page_hash_latch); + buf_pool_mutex_exit(); return(is_hashed); } @@ -1636,8 +1587,7 @@ buf_page_set_file_page_was_freed( { buf_page_t* bpage; - //buf_pool_mutex_enter(); - rw_lock_s_lock(&page_hash_latch); + buf_pool_mutex_enter(); bpage = buf_page_hash_get(space, offset); @@ -1645,8 +1595,7 @@ buf_page_set_file_page_was_freed( bpage->file_page_was_freed = TRUE; } - //buf_pool_mutex_exit(); - rw_lock_s_unlock(&page_hash_latch); + buf_pool_mutex_exit(); return(bpage); } @@ -1667,8 +1616,7 @@ buf_page_reset_file_page_was_freed( { buf_page_t* bpage; - //buf_pool_mutex_enter(); - rw_lock_s_lock(&page_hash_latch); + buf_pool_mutex_enter(); bpage = buf_page_hash_get(space, offset); @@ -1676,8 +1624,7 @@ buf_page_reset_file_page_was_freed( bpage->file_page_was_freed = FALSE; } - //buf_pool_mutex_exit(); - rw_lock_s_unlock(&page_hash_latch); + buf_pool_mutex_exit(); return(bpage); } @@ -1710,9 +1657,8 @@ buf_page_get_zip( buf_pool->n_page_gets++; for (;;) { - //buf_pool_mutex_enter(); + buf_pool_mutex_enter(); lookup: - rw_lock_s_lock(&page_hash_latch); bpage = buf_page_hash_get(space, offset); if (bpage) { break; @@ -1720,8 +1666,7 @@ lookup: /* Page not in buf_pool: needs to be read from file */ - //buf_pool_mutex_exit(); - rw_lock_s_unlock(&page_hash_latch); + buf_pool_mutex_exit(); buf_read_page(space, zip_size, offset); @@ -1732,16 +1677,13 @@ lookup: if (UNIV_UNLIKELY(!bpage->zip.data)) { /* There is no compressed page. */ - //buf_pool_mutex_exit(); - rw_lock_s_unlock(&page_hash_latch); + buf_pool_mutex_exit(); return(NULL); } block_mutex = buf_page_get_mutex(bpage); mutex_enter(block_mutex); - rw_lock_s_unlock(&page_hash_latch); - switch (buf_page_get_state(bpage)) { case BUF_BLOCK_NOT_USED: case BUF_BLOCK_READY_FOR_USE: @@ -1756,7 +1698,7 @@ lookup: break; case BUF_BLOCK_FILE_PAGE: /* Discard the uncompressed page frame if possible. */ - if (buf_LRU_free_block(bpage, FALSE, NULL, FALSE) + if (buf_LRU_free_block(bpage, FALSE, NULL) == BUF_LRU_FREED) { mutex_exit(block_mutex); @@ -1770,7 +1712,7 @@ lookup: must_read = buf_page_get_io_fix(bpage) == BUF_IO_READ; - //buf_pool_mutex_exit(); + buf_pool_mutex_exit(); buf_page_set_accessed(bpage, TRUE); @@ -2001,7 +1943,7 @@ buf_block_is_uncompressed( const buf_chunk_t* chunk = buf_pool->chunks; const buf_chunk_t* const echunk = chunk + buf_pool->n_chunks; - //ut_ad(buf_pool_mutex_own()); + ut_ad(buf_pool_mutex_own()); if (UNIV_UNLIKELY((((ulint) block) % sizeof *block) != 0)) { /* The pointer should be aligned. */ @@ -2044,7 +1986,6 @@ buf_page_get_gen( ibool accessed; ulint fix_type; ibool must_read; - mutex_t* block_mutex; ut_ad(mtr); ut_ad((rw_latch == RW_S_LATCH) @@ -2060,12 +2001,9 @@ buf_page_get_gen( buf_pool->n_page_gets++; loop: block = guess; - //buf_pool_mutex_enter(); + buf_pool_mutex_enter(); if (block) { - block_mutex = buf_page_get_mutex((buf_page_t*)block); - mutex_enter(block_mutex); - /* If the guess is a compressed page descriptor that has been allocated by buf_buddy_alloc(), it may have been invalidated by buf_buddy_relocate(). In that @@ -2079,8 +2017,6 @@ loop: || space != block->page.space || buf_block_get_state(block) != BUF_BLOCK_FILE_PAGE) { - mutex_exit(block_mutex); - block = guess = NULL; } else { ut_ad(!block->page.in_zip_hash); @@ -2089,20 +2025,14 @@ loop: } if (block == NULL) { - rw_lock_s_lock(&page_hash_latch); block = (buf_block_t*) buf_page_hash_get(space, offset); - if (block) { - block_mutex = buf_page_get_mutex((buf_page_t*)block); - mutex_enter(block_mutex); - } - rw_lock_s_unlock(&page_hash_latch); } loop2: if (block == NULL) { /* Page not in buf_pool: needs to be read from file */ - //buf_pool_mutex_exit(); + buf_pool_mutex_exit(); if (mode == BUF_GET_IF_IN_POOL) { @@ -2123,8 +2053,7 @@ loop2: if (must_read && mode == BUF_GET_IF_IN_POOL) { /* The page is only being read to buffer */ - //buf_pool_mutex_exit(); - mutex_exit(block_mutex); + buf_pool_mutex_exit(); return(NULL); } @@ -2134,16 +2063,10 @@ loop2: ibool success; case BUF_BLOCK_FILE_PAGE: - if (block_mutex == &buf_pool_zip_mutex) { - /* it is wrong mutex... */ - mutex_exit(block_mutex); - goto loop; - } break; case BUF_BLOCK_ZIP_PAGE: case BUF_BLOCK_ZIP_DIRTY: - ut_ad(block_mutex == &buf_pool_zip_mutex); bpage = &block->page; if (bpage->buf_fix_count @@ -2154,26 +2077,20 @@ loop2: wait_until_unfixed: /* The block is buffer-fixed or I/O-fixed. Try again later. */ - //buf_pool_mutex_exit(); - mutex_exit(block_mutex); + buf_pool_mutex_exit(); os_thread_sleep(WAIT_FOR_READ); goto loop; } /* Allocate an uncompressed page. */ - //buf_pool_mutex_exit(); - mutex_exit(block_mutex); + buf_pool_mutex_exit(); block = buf_LRU_get_free_block(0); ut_a(block); - block_mutex = &block->mutex; - //buf_pool_mutex_enter(); - mutex_enter(&LRU_list_mutex); - mutex_enter(&flush_list_mutex); - rw_lock_x_lock(&page_hash_latch); - mutex_enter(block_mutex); + buf_pool_mutex_enter(); + mutex_enter(&block->mutex); { buf_page_t* hash_bpage @@ -2184,17 +2101,10 @@ wait_until_unfixed: while buf_pool_mutex was released. Free the block that was allocated. */ - buf_LRU_block_free_non_file_page(block, TRUE); - mutex_exit(block_mutex); + buf_LRU_block_free_non_file_page(block); + mutex_exit(&block->mutex); block = (buf_block_t*) hash_bpage; - if (block) { - block_mutex = buf_page_get_mutex((buf_page_t*)block); - mutex_enter(block_mutex); - } - rw_lock_x_unlock(&page_hash_latch); - mutex_exit(&LRU_list_mutex); - mutex_exit(&flush_list_mutex); goto loop2; } } @@ -2208,12 +2118,9 @@ wait_until_unfixed: Free the block that was allocated and try again. This should be extremely unlikely. */ - buf_LRU_block_free_non_file_page(block, TRUE); - //mutex_exit(&block->mutex); + buf_LRU_block_free_non_file_page(block); + mutex_exit(&block->mutex); - rw_lock_x_unlock(&page_hash_latch); - mutex_exit(&LRU_list_mutex); - mutex_exit(&flush_list_mutex); goto wait_until_unfixed; } @@ -2223,9 +2130,6 @@ wait_until_unfixed: mutex_enter(&buf_pool_zip_mutex); buf_relocate(bpage, &block->page); - - rw_lock_x_unlock(&page_hash_latch); - buf_block_init_low(block); block->lock_hash_val = lock_rec_hash(space, offset); @@ -2257,8 +2161,6 @@ wait_until_unfixed: } } - mutex_exit(&flush_list_mutex); - /* Buffer-fix, I/O-fix, and X-latch the block for the duration of the decompression. Also add the block to the unzip_LRU list. */ @@ -2267,22 +2169,16 @@ wait_until_unfixed: /* Insert at the front of unzip_LRU list */ buf_unzip_LRU_add_block(block, FALSE); - mutex_exit(&LRU_list_mutex); - block->page.buf_fix_count = 1; buf_block_set_io_fix(block, BUF_IO_READ); - - mutex_enter(&buf_pool_mutex); buf_pool->n_pend_unzip++; - mutex_exit(&buf_pool_mutex); - rw_lock_x_lock(&block->lock); - mutex_exit(block_mutex); + mutex_exit(&block->mutex); mutex_exit(&buf_pool_zip_mutex); - buf_buddy_free(bpage, sizeof *bpage, FALSE); + buf_buddy_free(bpage, sizeof *bpage); - //buf_pool_mutex_exit(); + buf_pool_mutex_exit(); /* Decompress the page and apply buffered operations while not holding buf_pool_mutex or block->mutex. */ @@ -2294,21 +2190,17 @@ wait_until_unfixed: } /* Unfix and unlatch the block. */ - //buf_pool_mutex_enter(); - block_mutex = &block->mutex; - mutex_enter(block_mutex); - mutex_enter(&buf_pool_mutex); + buf_pool_mutex_enter(); + mutex_enter(&block->mutex); buf_pool->n_pend_unzip--; - mutex_exit(&buf_pool_mutex); block->page.buf_fix_count--; buf_block_set_io_fix(block, BUF_IO_NONE); - //mutex_exit(&block->mutex); + mutex_exit(&block->mutex); rw_lock_x_unlock(&block->lock); if (UNIV_UNLIKELY(!success)) { - //buf_pool_mutex_exit(); - mutex_exit(block_mutex); + buf_pool_mutex_exit(); return(NULL); } @@ -2325,11 +2217,11 @@ wait_until_unfixed: ut_ad(buf_block_get_state(block) == BUF_BLOCK_FILE_PAGE); - //mutex_enter(&block->mutex); + mutex_enter(&block->mutex); UNIV_MEM_ASSERT_RW(&block->page, sizeof block->page); buf_block_buf_fix_inc(block, file, line); - //buf_pool_mutex_exit(); + buf_pool_mutex_exit(); /* Check if this is the first access to the page */ @@ -2337,7 +2229,7 @@ wait_until_unfixed: buf_page_set_accessed(&block->page, TRUE); - mutex_exit(block_mutex); + mutex_exit(&block->mutex); buf_block_make_young(&block->page); @@ -2623,19 +2515,16 @@ buf_page_try_get_func( ibool success; ulint fix_type; - //buf_pool_mutex_enter(); - rw_lock_s_lock(&page_hash_latch); + buf_pool_mutex_enter(); block = buf_block_hash_get(space_id, page_no); if (!block) { - //buf_pool_mutex_exit(); - rw_lock_s_unlock(&page_hash_latch); + buf_pool_mutex_exit(); return(NULL); } mutex_enter(&block->mutex); - //buf_pool_mutex_exit(); - rw_lock_s_unlock(&page_hash_latch); + buf_pool_mutex_exit(); #if defined UNIV_DEBUG || defined UNIV_BUF_DEBUG ut_a(buf_block_get_state(block) == BUF_BLOCK_FILE_PAGE); @@ -2755,10 +2644,7 @@ buf_page_init( { buf_page_t* hash_page; - //ut_ad(buf_pool_mutex_own()); -#ifdef UNIV_SYNC_DEBUG - ut_ad(rw_lock_own(&page_hash_latch, RW_LOCK_EX)); -#endif + ut_ad(buf_pool_mutex_own()); ut_ad(mutex_own(&(block->mutex))); ut_a(buf_block_get_state(block) != BUF_BLOCK_FILE_PAGE); @@ -2791,8 +2677,7 @@ buf_page_init( (const void*) hash_page, (const void*) block); #if defined UNIV_DEBUG || defined UNIV_BUF_DEBUG mutex_exit(&block->mutex); - //buf_pool_mutex_exit(); - rw_lock_x_unlock(&page_hash_latch); + buf_pool_mutex_exit(); buf_print(); buf_LRU_print(); buf_validate(); @@ -2871,28 +2756,16 @@ buf_page_init_for_read( ut_ad(block); } - //buf_pool_mutex_enter(); - mutex_enter(&LRU_list_mutex); - if(!block) { - mutex_enter(&flush_list_mutex); - } - rw_lock_x_lock(&page_hash_latch); + buf_pool_mutex_enter(); if (buf_page_hash_get(space, offset)) { /* The page is already in the buffer pool. */ err_exit: if (block) { mutex_enter(&block->mutex); - mutex_exit(&LRU_list_mutex); - rw_lock_x_unlock(&page_hash_latch); - buf_LRU_block_free_non_file_page(block, FALSE); + buf_LRU_block_free_non_file_page(block); mutex_exit(&block->mutex); } - else { - mutex_exit(&LRU_list_mutex); - mutex_exit(&flush_list_mutex); - rw_lock_x_unlock(&page_hash_latch); - } bpage = NULL; goto func_exit; @@ -2912,8 +2785,6 @@ err_exit: mutex_enter(&block->mutex); buf_page_init(space, offset, block); - rw_lock_x_unlock(&page_hash_latch); - /* The block must be put to the LRU list, to the old blocks */ buf_LRU_add_block(bpage, TRUE/* to old blocks */); @@ -2941,7 +2812,7 @@ err_exit: been added to buf_pool->LRU and buf_pool->page_hash. */ mutex_exit(&block->mutex); - data = buf_buddy_alloc(zip_size, &lru, FALSE); + data = buf_buddy_alloc(zip_size, &lru); mutex_enter(&block->mutex); block->page.zip.data = data; @@ -2954,7 +2825,6 @@ err_exit: buf_unzip_LRU_add_block(block, TRUE); } - mutex_exit(&LRU_list_mutex); mutex_exit(&block->mutex); } else { /* Defer buf_buddy_alloc() until after the block has @@ -2966,8 +2836,8 @@ err_exit: control block (bpage), in order to avoid the invocation of buf_buddy_relocate_block() on uninitialized data. */ - data = buf_buddy_alloc(zip_size, &lru, TRUE); - bpage = buf_buddy_alloc(sizeof *bpage, &lru, TRUE); + data = buf_buddy_alloc(zip_size, &lru); + bpage = buf_buddy_alloc(sizeof *bpage, &lru); /* If buf_buddy_alloc() allocated storage from the LRU list, it released and reacquired buf_pool_mutex. Thus, we must @@ -2976,12 +2846,8 @@ err_exit: && UNIV_LIKELY_NULL(buf_page_hash_get(space, offset))) { /* The block was added by some other thread. */ - buf_buddy_free(bpage, sizeof *bpage, TRUE); - buf_buddy_free(data, zip_size, TRUE); - - mutex_exit(&LRU_list_mutex); - mutex_exit(&flush_list_mutex); - rw_lock_x_unlock(&page_hash_latch); + buf_buddy_free(bpage, sizeof *bpage); + buf_buddy_free(data, zip_size); bpage = NULL; goto func_exit; @@ -3011,25 +2877,18 @@ err_exit: HASH_INSERT(buf_page_t, hash, buf_pool->page_hash, buf_page_address_fold(space, offset), bpage); - rw_lock_x_unlock(&page_hash_latch); - /* The block must be put to the LRU list, to the old blocks */ buf_LRU_add_block(bpage, TRUE/* to old blocks */); buf_LRU_insert_zip_clean(bpage); - mutex_exit(&LRU_list_mutex); - mutex_exit(&flush_list_mutex); - buf_page_set_io_fix(bpage, BUF_IO_READ); mutex_exit(&buf_pool_zip_mutex); } - mutex_enter(&buf_pool_mutex); buf_pool->n_pend_reads++; - mutex_exit(&buf_pool_mutex); func_exit: - //buf_pool_mutex_exit(); + buf_pool_mutex_exit(); if (mode == BUF_READ_IBUF_PAGES_ONLY) { @@ -3065,9 +2924,7 @@ buf_page_create( free_block = buf_LRU_get_free_block(0); - //buf_pool_mutex_enter(); - mutex_enter(&LRU_list_mutex); - rw_lock_x_lock(&page_hash_latch); + buf_pool_mutex_enter(); block = (buf_block_t*) buf_page_hash_get(space, offset); @@ -3080,9 +2937,7 @@ buf_page_create( #endif /* UNIV_DEBUG_FILE_ACCESSES */ /* Page can be found in buf_pool */ - //buf_pool_mutex_exit(); - mutex_exit(&LRU_list_mutex); - rw_lock_x_unlock(&page_hash_latch); + buf_pool_mutex_exit(); buf_block_free(free_block); @@ -3104,7 +2959,6 @@ buf_page_create( mutex_enter(&block->mutex); buf_page_init(space, offset, block); - rw_lock_x_unlock(&page_hash_latch); /* The block must be put to the LRU list */ buf_LRU_add_block(&block->page, FALSE); @@ -3131,7 +2985,7 @@ buf_page_create( the reacquisition of buf_pool_mutex. We also must defer this operation until after the block descriptor has been added to buf_pool->LRU and buf_pool->page_hash. */ - data = buf_buddy_alloc(zip_size, &lru, FALSE); + data = buf_buddy_alloc(zip_size, &lru); mutex_enter(&block->mutex); block->page.zip.data = data; @@ -3147,8 +3001,7 @@ buf_page_create( rw_lock_x_unlock(&block->lock); } - //buf_pool_mutex_exit(); - mutex_exit(&LRU_list_mutex); + buf_pool_mutex_exit(); mtr_memo_push(mtr, block, MTR_MEMO_BUF_FIX); @@ -3200,7 +3053,6 @@ buf_page_io_complete( enum buf_io_fix io_type; const ibool uncompressed = (buf_page_get_state(bpage) == BUF_BLOCK_FILE_PAGE); - enum buf_flush flush_type; ut_a(buf_page_in_file(bpage)); @@ -3335,17 +3187,8 @@ corrupt: } } - //buf_pool_mutex_enter(); - if (io_type == BUF_IO_WRITE) { - flush_type = buf_page_get_flush_type(bpage); - /* to keep consistency at buf_LRU_insert_zip_clean() */ - //if (flush_type == BUF_FLUSH_LRU) { /* optimistic! */ - mutex_enter(&LRU_list_mutex); - //} - mutex_enter(&flush_list_mutex); - } + buf_pool_mutex_enter(); mutex_enter(buf_page_get_mutex(bpage)); - mutex_enter(&buf_pool_mutex); #ifdef UNIV_IBUF_COUNT_DEBUG if (io_type == BUF_IO_WRITE || uncompressed) { @@ -3385,12 +3228,6 @@ corrupt: buf_flush_write_complete(bpage); - mutex_exit(&flush_list_mutex); - /* to keep consistency at buf_LRU_insert_zip_clean() */ - //if (flush_type == BUF_FLUSH_LRU) { /* optimistic! */ - mutex_exit(&LRU_list_mutex); - //} - if (uncompressed) { rw_lock_s_unlock_gen(&((buf_block_t*) bpage)->lock, BUF_IO_WRITE); @@ -3413,9 +3250,8 @@ corrupt: } #endif /* UNIV_DEBUG */ - mutex_exit(&buf_pool_mutex); mutex_exit(buf_page_get_mutex(bpage)); - //buf_pool_mutex_exit(); + buf_pool_mutex_exit(); } /************************************************************************* @@ -3437,14 +3273,12 @@ buf_pool_invalidate(void) freed = buf_LRU_search_and_free_block(100); } - //buf_pool_mutex_enter(); - mutex_enter(&LRU_list_mutex); + buf_pool_mutex_enter(); ut_ad(UT_LIST_GET_LEN(buf_pool->LRU) == 0); ut_ad(UT_LIST_GET_LEN(buf_pool->unzip_LRU) == 0); - //buf_pool_mutex_exit(); - mutex_exit(&LRU_list_mutex); + buf_pool_mutex_exit(); } #if defined UNIV_DEBUG || defined UNIV_BUF_DEBUG @@ -3468,11 +3302,7 @@ buf_validate(void) ut_ad(buf_pool); - //buf_pool_mutex_enter(); - mutex_enter(&LRU_list_mutex); - mutex_enter(&flush_list_mutex); - rw_lock_x_lock(&page_hash_latch); - /* for keep the new latch order, it cannot validate correctly... */ + buf_pool_mutex_enter(); chunk = buf_pool->chunks; @@ -3653,25 +3483,19 @@ buf_validate(void) } ut_a(UT_LIST_GET_LEN(buf_pool->LRU) == n_lru); - /* because of latching order, we cannot get free_list_mutex here. */ -/* if (UT_LIST_GET_LEN(buf_pool->free) != n_free) { fprintf(stderr, "Free list len %lu, free blocks %lu\n", (ulong) UT_LIST_GET_LEN(buf_pool->free), (ulong) n_free); ut_error; } -*/ ut_a(UT_LIST_GET_LEN(buf_pool->flush_list) == n_flush); ut_a(buf_pool->n_flush[BUF_FLUSH_SINGLE_PAGE] == n_single_flush); ut_a(buf_pool->n_flush[BUF_FLUSH_LIST] == n_list_flush); ut_a(buf_pool->n_flush[BUF_FLUSH_LRU] == n_lru_flush); - //buf_pool_mutex_exit(); - mutex_exit(&LRU_list_mutex); - mutex_exit(&flush_list_mutex); - rw_lock_x_unlock(&page_hash_latch); + buf_pool_mutex_exit(); ut_a(buf_LRU_validate()); ut_a(buf_flush_validate()); @@ -3705,10 +3529,7 @@ buf_print(void) index_ids = mem_alloc(sizeof(dulint) * size); counts = mem_alloc(sizeof(ulint) * size); - //buf_pool_mutex_enter(); - mutex_enter(&LRU_list_mutex); - mutex_enter(&flush_list_mutex); - mutex_enter(&free_list_mutex); + buf_pool_mutex_enter(); fprintf(stderr, "buf_pool size %lu\n" @@ -3771,10 +3592,7 @@ buf_print(void) } } - //buf_pool_mutex_exit(); - mutex_exit(&LRU_list_mutex); - mutex_exit(&flush_list_mutex); - mutex_exit(&free_list_mutex); + buf_pool_mutex_exit(); for (i = 0; i < n_found; i++) { index = dict_index_get_if_in_cache(index_ids[i]); @@ -3812,7 +3630,7 @@ buf_get_latched_pages_number(void) ulint i; ulint fixed_pages_number = 0; - //buf_pool_mutex_enter(); + buf_pool_mutex_enter(); chunk = buf_pool->chunks; @@ -3882,7 +3700,7 @@ buf_get_latched_pages_number(void) } mutex_exit(&buf_pool_zip_mutex); - //buf_pool_mutex_exit(); + buf_pool_mutex_exit(); return(fixed_pages_number); } @@ -3939,11 +3757,7 @@ buf_print_io( ut_ad(buf_pool); size = buf_pool->curr_size; - //buf_pool_mutex_enter(); - mutex_enter(&LRU_list_mutex); - mutex_enter(&flush_list_mutex); - mutex_enter(&free_list_mutex); - mutex_enter(&buf_pool_mutex); + buf_pool_mutex_enter(); fprintf(file, "Buffer pool size %lu\n" @@ -4010,11 +3824,7 @@ buf_print_io( buf_LRU_stat_sum.io, buf_LRU_stat_cur.io, buf_LRU_stat_sum.unzip, buf_LRU_stat_cur.unzip); - //buf_pool_mutex_exit(); - mutex_exit(&LRU_list_mutex); - mutex_exit(&flush_list_mutex); - mutex_exit(&free_list_mutex); - mutex_exit(&buf_pool_mutex); + buf_pool_mutex_exit(); } /************************************************************************** @@ -4043,7 +3853,7 @@ buf_all_freed(void) ut_ad(buf_pool); - //buf_pool_mutex_enter(); /* optimistic */ + buf_pool_mutex_enter(); chunk = buf_pool->chunks; @@ -4060,7 +3870,7 @@ buf_all_freed(void) } } - //buf_pool_mutex_exit(); /* optimistic */ + buf_pool_mutex_exit(); return(TRUE); } @@ -4076,8 +3886,7 @@ buf_pool_check_no_pending_io(void) { ibool ret; - //buf_pool_mutex_enter(); - mutex_enter(&buf_pool_mutex); + buf_pool_mutex_enter(); if (buf_pool->n_pend_reads + buf_pool->n_flush[BUF_FLUSH_LRU] + buf_pool->n_flush[BUF_FLUSH_LIST] @@ -4087,8 +3896,7 @@ buf_pool_check_no_pending_io(void) ret = TRUE; } - //buf_pool_mutex_exit(); - mutex_exit(&buf_pool_mutex); + buf_pool_mutex_exit(); return(ret); } @@ -4102,13 +3910,11 @@ buf_get_free_list_len(void) { ulint len; - //buf_pool_mutex_enter(); - mutex_enter(&free_list_mutex); + buf_pool_mutex_enter(); len = UT_LIST_GET_LEN(buf_pool->free); - //buf_pool_mutex_exit(); - mutex_exit(&free_list_mutex); + buf_pool_mutex_exit(); return(len); } === modified file 'storage/xtradb/buf/buf0flu.c' --- a/storage/xtradb/buf/buf0flu.c 2009-03-26 06:11:11 +0000 +++ b/storage/xtradb/buf/buf0flu.c 2009-05-04 04:32:30 +0000 @@ -61,8 +61,7 @@ buf_flush_insert_into_flush_list( /*=============================*/ buf_block_t* block) /* in/out: block which is modified */ { - //ut_ad(buf_pool_mutex_own()); - ut_ad(mutex_own(&flush_list_mutex)); + ut_ad(buf_pool_mutex_own()); ut_ad((UT_LIST_GET_FIRST(buf_pool->flush_list) == NULL) || (UT_LIST_GET_FIRST(buf_pool->flush_list)->oldest_modification <= block->page.oldest_modification)); @@ -93,8 +92,7 @@ buf_flush_insert_sorted_into_flush_list( buf_page_t* prev_b; buf_page_t* b; - //ut_ad(buf_pool_mutex_own()); - ut_ad(mutex_own(&flush_list_mutex)); + ut_ad(buf_pool_mutex_own()); ut_ad(buf_block_get_state(block) == BUF_BLOCK_FILE_PAGE); ut_ad(block->page.in_LRU_list); @@ -137,7 +135,7 @@ buf_flush_ready_for_replace( { //ut_ad(buf_pool_mutex_own()); //ut_ad(mutex_own(buf_page_get_mutex(bpage))); - //ut_ad(bpage->in_LRU_list); + //ut_ad(bpage->in_LRU_list); /* optimistic use */ if (UNIV_LIKELY(bpage->in_LRU_list && buf_page_in_file(bpage))) { @@ -172,7 +170,7 @@ buf_flush_ready_for_flush( enum buf_flush flush_type)/* in: BUF_FLUSH_LRU or BUF_FLUSH_LIST */ { ut_a(buf_page_in_file(bpage)); - //ut_ad(buf_pool_mutex_own()); /*optimistic...*/ + ut_ad(buf_pool_mutex_own()); ut_ad(mutex_own(buf_page_get_mutex(bpage))); ut_ad(flush_type == BUF_FLUSH_LRU || BUF_FLUSH_LIST); @@ -205,8 +203,7 @@ buf_flush_remove( /*=============*/ buf_page_t* bpage) /* in: pointer to the block in question */ { - //ut_ad(buf_pool_mutex_own()); - ut_ad(mutex_own(&flush_list_mutex)); + ut_ad(buf_pool_mutex_own()); ut_ad(mutex_own(buf_page_get_mutex(bpage))); ut_ad(bpage->in_flush_list); ut_d(bpage->in_flush_list = FALSE); @@ -765,19 +762,12 @@ buf_flush_page( ibool is_uncompressed; ut_ad(flush_type == BUF_FLUSH_LRU || flush_type == BUF_FLUSH_LIST); - //ut_ad(buf_pool_mutex_own()); -#ifdef UNIV_SYNC_DEBUG - ut_ad(rw_lock_own(&page_hash_latch, RW_LOCK_EX) - || rw_lock_own(&page_hash_latch, RW_LOCK_SHARED)); -#endif + ut_ad(buf_pool_mutex_own()); ut_ad(buf_page_in_file(bpage)); block_mutex = buf_page_get_mutex(bpage); ut_ad(mutex_own(block_mutex)); - mutex_enter(&buf_pool_mutex); - rw_lock_s_unlock(&page_hash_latch); - ut_ad(buf_flush_ready_for_flush(bpage, flush_type)); buf_page_set_io_fix(bpage, BUF_IO_WRITE); @@ -808,8 +798,7 @@ buf_flush_page( } mutex_exit(block_mutex); - //buf_pool_mutex_exit(); - mutex_exit(&buf_pool_mutex); + buf_pool_mutex_exit(); /* Even though bpage is not protected by any mutex at this point, it is safe to access bpage, because it is @@ -846,8 +835,7 @@ buf_flush_page( immediately. */ mutex_exit(block_mutex); - //buf_pool_mutex_exit(); - mutex_exit(&buf_pool_mutex); + buf_pool_mutex_exit(); break; default: @@ -911,8 +899,7 @@ buf_flush_try_neighbors( high = fil_space_get_size(space); } - //buf_pool_mutex_enter(); - rw_lock_s_lock(&page_hash_latch); + buf_pool_mutex_enter(); for (i = low; i < high; i++) { @@ -949,16 +936,14 @@ buf_flush_try_neighbors( ut_ad(!mutex_own(block_mutex)); count++; - //buf_pool_mutex_enter(); - rw_lock_s_lock(&page_hash_latch); + buf_pool_mutex_enter(); } else { mutex_exit(block_mutex); } } } - //buf_pool_mutex_exit(); - rw_lock_s_unlock(&page_hash_latch); + buf_pool_mutex_exit(); return(count); } @@ -1002,29 +987,20 @@ buf_flush_batch( ut_ad((flush_type != BUF_FLUSH_LIST) || sync_thread_levels_empty_gen(TRUE)); #endif /* UNIV_SYNC_DEBUG */ - //buf_pool_mutex_enter(); - mutex_enter(&buf_pool_mutex); + buf_pool_mutex_enter(); if ((buf_pool->n_flush[flush_type] > 0) || (buf_pool->init_flush[flush_type] == TRUE)) { /* There is already a flush batch of the same type running */ - //buf_pool_mutex_exit(); - mutex_exit(&buf_pool_mutex); + buf_pool_mutex_exit(); return(ULINT_UNDEFINED); } buf_pool->init_flush[flush_type] = TRUE; - mutex_exit(&buf_pool_mutex); - - if (flush_type == BUF_FLUSH_LRU) { - mutex_enter(&LRU_list_mutex); - } - mutex_enter(&flush_list_mutex); - for (;;) { flush_next: /* If we have flushed enough, leave the loop */ @@ -1071,11 +1047,7 @@ flush_next: space = buf_page_get_space(bpage); offset = buf_page_get_page_no(bpage); - //buf_pool_mutex_exit(); - if (flush_type == BUF_FLUSH_LRU) { - mutex_exit(&LRU_list_mutex); - } - mutex_exit(&flush_list_mutex); + buf_pool_mutex_exit(); old_page_count = page_count; @@ -1085,8 +1057,7 @@ flush_next: space, offset, flush_type); } else { /* Try to flush the page only */ - //buf_pool_mutex_enter(); - rw_lock_s_lock(&page_hash_latch); + buf_pool_mutex_enter(); mutex_t* block_mutex = buf_page_get_mutex(bpage); mutex_enter(block_mutex); @@ -1102,11 +1073,7 @@ flush_next: flush_type, offset, page_count - old_page_count); */ - //buf_pool_mutex_enter(); - if (flush_type == BUF_FLUSH_LRU) { - mutex_enter(&LRU_list_mutex); - } - mutex_enter(&flush_list_mutex); + buf_pool_mutex_enter(); goto flush_next; } else if (flush_type == BUF_FLUSH_LRU) { @@ -1124,13 +1091,6 @@ flush_next: break; } - if (flush_type == BUF_FLUSH_LRU) { - mutex_exit(&LRU_list_mutex); - } - mutex_exit(&flush_list_mutex); - - mutex_enter(&buf_pool_mutex); - buf_pool->init_flush[flush_type] = FALSE; if (buf_pool->n_flush[flush_type] == 0) { @@ -1140,8 +1100,7 @@ flush_next: os_event_set(buf_pool->no_flush[flush_type]); } - //buf_pool_mutex_exit(); - mutex_exit(&buf_pool_mutex); + buf_pool_mutex_exit(); buf_flush_buffered_writes(); @@ -1195,7 +1154,7 @@ buf_flush_LRU_recommendation(void) //buf_pool_mutex_enter(); if (have_LRU_mutex) - mutex_enter(&LRU_list_mutex); + buf_pool_mutex_enter(); n_replaceable = UT_LIST_GET_LEN(buf_pool->free); @@ -1229,7 +1188,7 @@ buf_flush_LRU_recommendation(void) //buf_pool_mutex_exit(); if (have_LRU_mutex) - mutex_exit(&LRU_list_mutex); + buf_pool_mutex_exit(); if (n_replaceable >= BUF_FLUSH_FREE_BLOCK_MARGIN) { @@ -1307,13 +1266,11 @@ buf_flush_validate(void) { ibool ret; - //buf_pool_mutex_enter(); - mutex_enter(&flush_list_mutex); + buf_pool_mutex_enter(); ret = buf_flush_validate_low(); - //buf_pool_mutex_exit(); - mutex_exit(&flush_list_mutex); + buf_pool_mutex_exit(); return(ret); } === modified file 'storage/xtradb/buf/buf0lru.c' --- a/storage/xtradb/buf/buf0lru.c 2009-03-26 06:11:11 +0000 +++ b/storage/xtradb/buf/buf0lru.c 2009-05-04 04:32:30 +0000 @@ -129,31 +129,25 @@ static void buf_LRU_block_free_hashed_page( /*===========================*/ - buf_block_t* block, /* in: block, must contain a file page and + buf_block_t* block); /* in: block, must contain a file page and be in a state where it can be freed */ - ibool have_page_hash_mutex); /********************************************************************** Determines if the unzip_LRU list should be used for evicting a victim instead of the general LRU list. */ UNIV_INLINE ibool -buf_LRU_evict_from_unzip_LRU( - ibool have_LRU_mutex) +buf_LRU_evict_from_unzip_LRU(void) /*==============================*/ /* out: TRUE if should use unzip_LRU */ { ulint io_avg; ulint unzip_avg; - //ut_ad(buf_pool_mutex_own()); + ut_ad(buf_pool_mutex_own()); - if (!have_LRU_mutex) - mutex_enter(&LRU_list_mutex); /* If the unzip_LRU list is empty, we can only use the LRU. */ if (UT_LIST_GET_LEN(buf_pool->unzip_LRU) == 0) { - if (!have_LRU_mutex) - mutex_exit(&LRU_list_mutex); return(FALSE); } @@ -162,20 +156,14 @@ buf_LRU_evict_from_unzip_LRU( decompressed pages in the buffer pool. */ if (UT_LIST_GET_LEN(buf_pool->unzip_LRU) <= UT_LIST_GET_LEN(buf_pool->LRU) / 10) { - if (!have_LRU_mutex) - mutex_exit(&LRU_list_mutex); return(FALSE); } /* If eviction hasn't started yet, we assume by default that a workload is disk bound. */ if (buf_pool->freed_page_clock == 0) { - if (!have_LRU_mutex) - mutex_exit(&LRU_list_mutex); return(TRUE); } - if (!have_LRU_mutex) - mutex_exit(&LRU_list_mutex); /* Calculate the average over past intervals, and add the values of the current interval. */ @@ -241,8 +229,7 @@ buf_LRU_drop_page_hash_for_tablespace( page_arr = ut_malloc(sizeof(ulint) * BUF_LRU_DROP_SEARCH_HASH_SIZE); - //buf_pool_mutex_enter(); - mutex_enter(&LRU_list_mutex); + buf_pool_mutex_enter(); scan_again: num_entries = 0; @@ -282,14 +269,12 @@ scan_again: } /* Array full. We release the buf_pool_mutex to obey the latching order. */ - //buf_pool_mutex_exit(); - mutex_exit(&LRU_list_mutex); + buf_pool_mutex_exit(); buf_LRU_drop_page_hash_batch(id, zip_size, page_arr, num_entries); num_entries = 0; - //buf_pool_mutex_enter(); - mutex_enter(&LRU_list_mutex); + buf_pool_mutex_enter(); } else { mutex_exit(block_mutex); } @@ -314,8 +299,7 @@ next_page: } } - //buf_pool_mutex_exit(); - mutex_exit(&LRU_list_mutex); + buf_pool_mutex_exit(); /* Drop any remaining batch of search hashed pages. */ buf_LRU_drop_page_hash_batch(id, zip_size, page_arr, num_entries); @@ -343,10 +327,7 @@ buf_LRU_invalidate_tablespace( buf_LRU_drop_page_hash_for_tablespace(id); scan_again: - //buf_pool_mutex_enter(); - mutex_enter(&LRU_list_mutex); - mutex_enter(&flush_list_mutex); - rw_lock_x_lock(&page_hash_latch); + buf_pool_mutex_enter(); all_freed = TRUE; @@ -388,10 +369,7 @@ scan_again: ulint page_no; ulint zip_size; - //buf_pool_mutex_exit(); - mutex_exit(&LRU_list_mutex); - mutex_exit(&flush_list_mutex); - rw_lock_x_unlock(&page_hash_latch); + buf_pool_mutex_exit(); zip_size = buf_page_get_zip_size(bpage); page_no = buf_page_get_page_no(bpage); @@ -415,7 +393,7 @@ scan_again: if (buf_LRU_block_remove_hashed_page(bpage, TRUE) != BUF_BLOCK_ZIP_FREE) { buf_LRU_block_free_hashed_page((buf_block_t*) - bpage, TRUE); + bpage); } else { /* The block_mutex should have been released by buf_LRU_block_remove_hashed_page() @@ -438,10 +416,7 @@ next_page: bpage = prev_bpage; } - //buf_pool_mutex_exit(); - mutex_exit(&LRU_list_mutex); - mutex_exit(&flush_list_mutex); - rw_lock_x_unlock(&page_hash_latch); + buf_pool_mutex_exit(); if (!all_freed) { os_thread_sleep(20000); @@ -464,16 +439,14 @@ buf_LRU_get_recent_limit(void) ulint len; ulint limit; - //buf_pool_mutex_enter(); - mutex_enter(&LRU_list_mutex); + buf_pool_mutex_enter(); len = UT_LIST_GET_LEN(buf_pool->LRU); if (len < BUF_LRU_OLD_MIN_LEN) { /* The LRU list is too short to do read-ahead */ - //buf_pool_mutex_exit(); - mutex_exit(&LRU_list_mutex); + buf_pool_mutex_exit(); return(0); } @@ -482,8 +455,7 @@ buf_LRU_get_recent_limit(void) limit = buf_page_get_LRU_position(bpage) - len / BUF_LRU_INITIAL_RATIO; - //buf_pool_mutex_exit(); - mutex_exit(&LRU_list_mutex); + buf_pool_mutex_exit(); return(limit); } @@ -498,8 +470,7 @@ buf_LRU_insert_zip_clean( { buf_page_t* b; - //ut_ad(buf_pool_mutex_own()); - ut_ad(mutex_own(&flush_list_mutex)); + ut_ad(buf_pool_mutex_own()); ut_ad(buf_page_get_state(bpage) == BUF_BLOCK_ZIP_PAGE); /* Find the first successor of bpage in the LRU list @@ -507,7 +478,7 @@ buf_LRU_insert_zip_clean( b = bpage; do { b = UT_LIST_GET_NEXT(LRU, b); - } while (b && (buf_page_get_state(b) != BUF_BLOCK_ZIP_PAGE || !b->in_LRU_list)); + } while (b && buf_page_get_state(b) != BUF_BLOCK_ZIP_PAGE); /* Insert bpage before b, i.e., after the predecessor of b. */ if (b) { @@ -529,17 +500,16 @@ ibool buf_LRU_free_from_unzip_LRU_list( /*=============================*/ /* out: TRUE if freed */ - ulint n_iterations, /* in: how many times this has been called + ulint n_iterations) /* in: how many times this has been called repeatedly without result: a high value means that we should search farther; we will search n_iterations / 5 of the unzip_LRU list, or nothing if n_iterations >= 5 */ - ibool have_LRU_mutex) { buf_block_t* block; ulint distance; - //ut_ad(buf_pool_mutex_own()); /* optimistic */ + ut_ad(buf_pool_mutex_own()); /* Theoratically it should be much easier to find a victim from unzip_LRU as we can choose even a dirty block (as we'll @@ -549,7 +519,7 @@ buf_LRU_free_from_unzip_LRU_list( if we have done five iterations so far. */ if (UNIV_UNLIKELY(n_iterations >= 5) - || !buf_LRU_evict_from_unzip_LRU(have_LRU_mutex)) { + || !buf_LRU_evict_from_unzip_LRU()) { return(FALSE); } @@ -557,23 +527,18 @@ buf_LRU_free_from_unzip_LRU_list( distance = 100 + (n_iterations * UT_LIST_GET_LEN(buf_pool->unzip_LRU)) / 5; -restart: for (block = UT_LIST_GET_LAST(buf_pool->unzip_LRU); UNIV_LIKELY(block != NULL) && UNIV_LIKELY(distance > 0); block = UT_LIST_GET_PREV(unzip_LRU, block), distance--) { - if (!block->in_unzip_LRU_list || !block->page.in_LRU_list - || buf_block_get_state(block) != BUF_BLOCK_FILE_PAGE) - goto restart; enum buf_lru_free_block_status freed; - /* optimistic */ - //ut_ad(buf_block_get_state(block) == BUF_BLOCK_FILE_PAGE); - //ut_ad(block->in_unzip_LRU_list); - //ut_ad(block->page.in_LRU_list); + ut_ad(buf_block_get_state(block) == BUF_BLOCK_FILE_PAGE); + ut_ad(block->in_unzip_LRU_list); + ut_ad(block->page.in_LRU_list); mutex_enter(&block->mutex); - freed = buf_LRU_free_block(&block->page, FALSE, NULL, have_LRU_mutex); + freed = buf_LRU_free_block(&block->page, FALSE, NULL); mutex_exit(&block->mutex); switch (freed) { @@ -606,39 +571,33 @@ ibool buf_LRU_free_from_common_LRU_list( /*==============================*/ /* out: TRUE if freed */ - ulint n_iterations, /* in: how many times this has been called + ulint n_iterations) /* in: how many times this has been called repeatedly without result: a high value means that we should search farther; if n_iterations < 10, then we search n_iterations / 10 * buf_pool->curr_size pages from the end of the LRU list */ - ibool have_LRU_mutex) { buf_page_t* bpage; ulint distance; - //ut_ad(buf_pool_mutex_own()); /* optimistic */ + ut_ad(buf_pool_mutex_own()); distance = 100 + (n_iterations * buf_pool->curr_size) / 10; -restart: for (bpage = UT_LIST_GET_LAST(buf_pool->LRU); UNIV_LIKELY(bpage != NULL) && UNIV_LIKELY(distance > 0); bpage = UT_LIST_GET_PREV(LRU, bpage), distance--) { - if (!bpage->in_LRU_list - || buf_page_get_state(bpage) == BUF_BLOCK_ZIP_FREE) - goto restart; enum buf_lru_free_block_status freed; mutex_t* block_mutex = buf_page_get_mutex(bpage); - /* optimistic */ - //ut_ad(buf_page_in_file(bpage)); - //ut_ad(bpage->in_LRU_list); + ut_ad(buf_page_in_file(bpage)); + ut_ad(bpage->in_LRU_list); mutex_enter(block_mutex); - freed = buf_LRU_free_block(bpage, TRUE, NULL, have_LRU_mutex); + freed = buf_LRU_free_block(bpage, TRUE, NULL); mutex_exit(block_mutex); switch (freed) { @@ -681,33 +640,22 @@ buf_LRU_search_and_free_block( n_iterations / 5 of the unzip_LRU list. */ { ibool freed = FALSE; - ibool have_LRU_mutex = FALSE; - - if (UT_LIST_GET_LEN(buf_pool->unzip_LRU)) - have_LRU_mutex = TRUE; - /* optimistic search... */ - //buf_pool_mutex_enter(); - if (have_LRU_mutex) - mutex_enter(&LRU_list_mutex); + buf_pool_mutex_enter(); - freed = buf_LRU_free_from_unzip_LRU_list(n_iterations, have_LRU_mutex); + freed = buf_LRU_free_from_unzip_LRU_list(n_iterations); if (!freed) { - freed = buf_LRU_free_from_common_LRU_list(n_iterations, have_LRU_mutex); + freed = buf_LRU_free_from_common_LRU_list(n_iterations); } - mutex_enter(&buf_pool_mutex); if (!freed) { buf_pool->LRU_flush_ended = 0; } else if (buf_pool->LRU_flush_ended > 0) { buf_pool->LRU_flush_ended--; } - mutex_exit(&buf_pool_mutex); - //buf_pool_mutex_exit(); - if (have_LRU_mutex) - mutex_exit(&LRU_list_mutex); + buf_pool_mutex_exit(); return(freed); } @@ -725,22 +673,18 @@ void buf_LRU_try_free_flushed_blocks(void) /*=================================*/ { - //buf_pool_mutex_enter(); - mutex_enter(&buf_pool_mutex); + buf_pool_mutex_enter(); while (buf_pool->LRU_flush_ended > 0) { - //buf_pool_mutex_exit(); - mutex_exit(&buf_pool_mutex); + buf_pool_mutex_exit(); buf_LRU_search_and_free_block(1); - //buf_pool_mutex_enter(); - mutex_enter(&buf_pool_mutex); + buf_pool_mutex_enter(); } - //buf_pool_mutex_exit(); - mutex_exit(&buf_pool_mutex); + buf_pool_mutex_exit(); } /********************************************************************** @@ -756,9 +700,7 @@ buf_LRU_buf_pool_running_out(void) { ibool ret = FALSE; - //buf_pool_mutex_enter(); - mutex_enter(&LRU_list_mutex); - mutex_enter(&free_list_mutex); + buf_pool_mutex_enter(); if (!recv_recovery_on && UT_LIST_GET_LEN(buf_pool->free) + UT_LIST_GET_LEN(buf_pool->LRU) < buf_pool->curr_size / 4) { @@ -766,9 +708,7 @@ buf_LRU_buf_pool_running_out(void) ret = TRUE; } - //buf_pool_mutex_exit(); - mutex_exit(&LRU_list_mutex); - mutex_exit(&free_list_mutex); + buf_pool_mutex_exit(); return(ret); } @@ -785,10 +725,9 @@ buf_LRU_get_free_only(void) { buf_block_t* block; - //ut_ad(buf_pool_mutex_own()); + ut_ad(buf_pool_mutex_own()); - mutex_enter(&free_list_mutex); - block = (buf_block_t*) UT_LIST_GET_LAST(buf_pool->free); + block = (buf_block_t*) UT_LIST_GET_FIRST(buf_pool->free); if (block) { ut_ad(block->page.in_free_list); @@ -798,16 +737,12 @@ buf_LRU_get_free_only(void) ut_a(!buf_page_in_file(&block->page)); UT_LIST_REMOVE(list, buf_pool->free, (&block->page)); - mutex_exit(&free_list_mutex); - mutex_enter(&block->mutex); buf_block_set_state(block, BUF_BLOCK_READY_FOR_USE); UNIV_MEM_ALLOC(block->frame, UNIV_PAGE_SIZE); mutex_exit(&block->mutex); - } else { - mutex_exit(&free_list_mutex); } return(block); @@ -832,7 +767,7 @@ buf_LRU_get_free_block( ibool mon_value_was = FALSE; ibool started_monitor = FALSE; loop: - //buf_pool_mutex_enter(); + buf_pool_mutex_enter(); if (!recv_recovery_on && UT_LIST_GET_LEN(buf_pool->free) + UT_LIST_GET_LEN(buf_pool->LRU) < buf_pool->curr_size / 20) { @@ -912,16 +847,14 @@ loop: if (UNIV_UNLIKELY(zip_size)) { ibool lru; page_zip_set_size(&block->page.zip, zip_size); - mutex_enter(&LRU_list_mutex); - block->page.zip.data = buf_buddy_alloc(zip_size, &lru, FALSE); - mutex_exit(&LRU_list_mutex); + block->page.zip.data = buf_buddy_alloc(zip_size, &lru); UNIV_MEM_DESC(block->page.zip.data, zip_size, block); } else { page_zip_set_size(&block->page.zip, 0); block->page.zip.data = NULL; } - //buf_pool_mutex_exit(); + buf_pool_mutex_exit(); if (started_monitor) { srv_print_innodb_monitor = mon_value_was; @@ -933,7 +866,7 @@ loop: /* If no block was in the free list, search from the end of the LRU list and try to free a block there */ - //buf_pool_mutex_exit(); + buf_pool_mutex_exit(); freed = buf_LRU_search_and_free_block(n_iterations); @@ -982,21 +915,18 @@ loop: os_aio_simulated_wake_handler_threads(); - //buf_pool_mutex_enter(); - mutex_enter(&buf_pool_mutex); + buf_pool_mutex_enter(); if (buf_pool->LRU_flush_ended > 0) { /* We have written pages in an LRU flush. To make the insert buffer more efficient, we try to move these pages to the free list. */ - //buf_pool_mutex_exit(); - mutex_exit(&buf_pool_mutex); + buf_pool_mutex_exit(); buf_LRU_try_free_flushed_blocks(); } else { - //buf_pool_mutex_exit(); - mutex_exit(&buf_pool_mutex); + buf_pool_mutex_exit(); } if (n_iterations > 10) { @@ -1021,8 +951,7 @@ buf_LRU_old_adjust_len(void) ulint new_len; ut_a(buf_pool->LRU_old); - //ut_ad(buf_pool_mutex_own()); - ut_ad(mutex_own(&LRU_list_mutex)); + ut_ad(buf_pool_mutex_own()); #if 3 * (BUF_LRU_OLD_MIN_LEN / 8) <= BUF_LRU_OLD_TOLERANCE + 5 # error "3 * (BUF_LRU_OLD_MIN_LEN / 8) <= BUF_LRU_OLD_TOLERANCE + 5" #endif @@ -1080,8 +1009,7 @@ buf_LRU_old_init(void) { buf_page_t* bpage; - //ut_ad(buf_pool_mutex_own()); - ut_ad(mutex_own(&LRU_list_mutex)); + ut_ad(buf_pool_mutex_own()); ut_a(UT_LIST_GET_LEN(buf_pool->LRU) == BUF_LRU_OLD_MIN_LEN); /* We first initialize all blocks in the LRU list as old and then use @@ -1113,14 +1041,13 @@ buf_unzip_LRU_remove_block_if_needed( ut_ad(buf_pool); ut_ad(bpage); ut_ad(buf_page_in_file(bpage)); - //ut_ad(buf_pool_mutex_own()); - ut_ad(mutex_own(&LRU_list_mutex)); + ut_ad(buf_pool_mutex_own()); if (buf_page_belongs_to_unzip_LRU(bpage)) { buf_block_t* block = (buf_block_t*) bpage; ut_ad(block->in_unzip_LRU_list); - block->in_unzip_LRU_list = FALSE; + ut_d(block->in_unzip_LRU_list = FALSE); UT_LIST_REMOVE(unzip_LRU, buf_pool->unzip_LRU, block); } @@ -1136,8 +1063,7 @@ buf_LRU_remove_block( { ut_ad(buf_pool); ut_ad(bpage); - //ut_ad(buf_pool_mutex_own()); - ut_ad(mutex_own(&LRU_list_mutex)); + ut_ad(buf_pool_mutex_own()); ut_a(buf_page_in_file(bpage)); @@ -1200,13 +1126,12 @@ buf_unzip_LRU_add_block( { ut_ad(buf_pool); ut_ad(block); - //ut_ad(buf_pool_mutex_own()); - ut_ad(mutex_own(&LRU_list_mutex)); + ut_ad(buf_pool_mutex_own()); ut_a(buf_page_belongs_to_unzip_LRU(&block->page)); ut_ad(!block->in_unzip_LRU_list); - block->in_unzip_LRU_list = TRUE; + ut_d(block->in_unzip_LRU_list = TRUE); if (old) { UT_LIST_ADD_LAST(unzip_LRU, buf_pool->unzip_LRU, block); @@ -1227,8 +1152,7 @@ buf_LRU_add_block_to_end_low( ut_ad(buf_pool); ut_ad(bpage); - //ut_ad(buf_pool_mutex_own()); - ut_ad(mutex_own(&LRU_list_mutex)); + ut_ad(buf_pool_mutex_own()); ut_a(buf_page_in_file(bpage)); @@ -1288,8 +1212,7 @@ buf_LRU_add_block_low( { ut_ad(buf_pool); ut_ad(bpage); - //ut_ad(buf_pool_mutex_own()); - ut_ad(mutex_own(&LRU_list_mutex)); + ut_ad(buf_pool_mutex_own()); ut_a(buf_page_in_file(bpage)); ut_ad(!bpage->in_LRU_list); @@ -1408,24 +1331,22 @@ buf_LRU_free_block( buf_page_t* bpage, /* in: block to be freed */ ibool zip, /* in: TRUE if should remove also the compressed page of an uncompressed page */ - ibool* buf_pool_mutex_released, + ibool* buf_pool_mutex_released) /* in: pointer to a variable that will be assigned TRUE if buf_pool_mutex was temporarily released, or NULL */ - ibool have_LRU_mutex) { buf_page_t* b = NULL; mutex_t* block_mutex = buf_page_get_mutex(bpage); - //ut_ad(buf_pool_mutex_own()); - /* optimistic */ - //ut_ad(mutex_own(block_mutex)); - //ut_ad(buf_page_in_file(bpage)); - //ut_ad(bpage->in_LRU_list); - //ut_ad(!bpage->in_flush_list == !bpage->oldest_modification); + ut_ad(buf_pool_mutex_own()); + ut_ad(mutex_own(block_mutex)); + ut_ad(buf_page_in_file(bpage)); + ut_ad(bpage->in_LRU_list); + ut_ad(!bpage->in_flush_list == !bpage->oldest_modification); UNIV_MEM_ASSERT_RW(bpage, sizeof *bpage); - if (!bpage->in_LRU_list || !block_mutex || !buf_page_can_relocate(bpage)) { + if (!buf_page_can_relocate(bpage)) { /* Do not free buffer-fixed or I/O-fixed blocks. */ return(BUF_LRU_NOT_FREED); @@ -1457,15 +1378,15 @@ buf_LRU_free_block( If it cannot be allocated (without freeing a block from the LRU list), refuse to free bpage. */ alloc: - //buf_pool_mutex_exit_forbid(); - b = buf_buddy_alloc(sizeof *b, NULL, FALSE); - //buf_pool_mutex_exit_allow(); + buf_pool_mutex_exit_forbid(); + b = buf_buddy_alloc(sizeof *b, NULL); + buf_pool_mutex_exit_allow(); if (UNIV_UNLIKELY(!b)) { return(BUF_LRU_CANNOT_RELOCATE); } - //memcpy(b, bpage, sizeof *b); + memcpy(b, bpage, sizeof *b); } #ifdef UNIV_DEBUG @@ -1476,41 +1397,6 @@ alloc: } #endif /* UNIV_DEBUG */ - /* not to break latch order, must re-enter block_mutex */ - mutex_exit(block_mutex); - - if (!have_LRU_mutex) - mutex_enter(&LRU_list_mutex); /* optimistic */ - mutex_enter(&flush_list_mutex); - rw_lock_x_lock(&page_hash_latch); - mutex_enter(block_mutex); - - /* recheck states of block */ - if (!bpage->in_LRU_list || block_mutex != buf_page_get_mutex(bpage) - || !buf_page_can_relocate(bpage)) { -not_freed: - if (b) { - buf_buddy_free(b, sizeof *b, TRUE); - } - if (!have_LRU_mutex) - mutex_exit(&LRU_list_mutex); - mutex_exit(&flush_list_mutex); - rw_lock_x_unlock(&page_hash_latch); - return(BUF_LRU_NOT_FREED); - } else if (zip || !bpage->zip.data) { - if (bpage->oldest_modification) - goto not_freed; - } else if (bpage->oldest_modification) { - if (buf_page_get_state(bpage) != BUF_BLOCK_FILE_PAGE) { - ut_ad(buf_page_get_state(bpage) == BUF_BLOCK_ZIP_DIRTY); - goto not_freed; - } - } - - if (b) { - memcpy(b, bpage, sizeof *b); - } - if (buf_LRU_block_remove_hashed_page(bpage, zip) != BUF_BLOCK_ZIP_FREE) { ut_a(bpage->buf_fix_count == 0); @@ -1522,10 +1408,6 @@ not_freed: ut_a(!buf_page_hash_get(bpage->space, bpage->offset)); - while (prev_b && !prev_b->in_LRU_list) { - prev_b = UT_LIST_GET_PREV(LRU, prev_b); - } - b->state = b->oldest_modification ? BUF_BLOCK_ZIP_DIRTY : BUF_BLOCK_ZIP_PAGE; @@ -1639,10 +1521,7 @@ not_freed: *buf_pool_mutex_released = TRUE; } - //buf_pool_mutex_exit(); - mutex_exit(&LRU_list_mutex); - mutex_exit(&flush_list_mutex); - rw_lock_x_unlock(&page_hash_latch); + buf_pool_mutex_exit(); mutex_exit(block_mutex); /* Remove possible adaptive hash index on the page. @@ -1674,9 +1553,7 @@ not_freed: : BUF_NO_CHECKSUM_MAGIC); } - //buf_pool_mutex_enter(); - if (have_LRU_mutex) - mutex_enter(&LRU_list_mutex); + buf_pool_mutex_enter(); mutex_enter(block_mutex); if (b) { @@ -1686,18 +1563,13 @@ not_freed: mutex_exit(&buf_pool_zip_mutex); } - buf_LRU_block_free_hashed_page((buf_block_t*) bpage, FALSE); + buf_LRU_block_free_hashed_page((buf_block_t*) bpage); } else { /* The block_mutex should have been released by buf_LRU_block_remove_hashed_page() when it returns BUF_BLOCK_ZIP_FREE. */ ut_ad(block_mutex == &buf_pool_zip_mutex); mutex_enter(block_mutex); - - if (!have_LRU_mutex) - mutex_exit(&LRU_list_mutex); - mutex_exit(&flush_list_mutex); - rw_lock_x_unlock(&page_hash_latch); } return(BUF_LRU_FREED); @@ -1709,13 +1581,12 @@ UNIV_INTERN void buf_LRU_block_free_non_file_page( /*=============================*/ - buf_block_t* block, /* in: block, must not contain a file page */ - ibool have_page_hash_mutex) + buf_block_t* block) /* in: block, must not contain a file page */ { void* data; ut_ad(block); - //ut_ad(buf_pool_mutex_own()); + ut_ad(buf_pool_mutex_own()); ut_ad(mutex_own(&block->mutex)); switch (buf_block_get_state(block)) { @@ -1749,17 +1620,15 @@ buf_LRU_block_free_non_file_page( if (data) { block->page.zip.data = NULL; mutex_exit(&block->mutex); - //buf_pool_mutex_exit_forbid(); - buf_buddy_free(data, page_zip_get_size(&block->page.zip), have_page_hash_mutex); - //buf_pool_mutex_exit_allow(); + buf_pool_mutex_exit_forbid(); + buf_buddy_free(data, page_zip_get_size(&block->page.zip)); + buf_pool_mutex_exit_allow(); mutex_enter(&block->mutex); page_zip_set_size(&block->page.zip, 0); } - mutex_enter(&free_list_mutex); UT_LIST_ADD_FIRST(list, buf_pool->free, (&block->page)); ut_d(block->page.in_free_list = TRUE); - mutex_exit(&free_list_mutex); UNIV_MEM_ASSERT_AND_FREE(block->frame, UNIV_PAGE_SIZE); } @@ -1788,11 +1657,7 @@ buf_LRU_block_remove_hashed_page( { const buf_page_t* hashed_bpage; ut_ad(bpage); - //ut_ad(buf_pool_mutex_own()); - ut_ad(mutex_own(&LRU_list_mutex)); -#ifdef UNIV_SYNC_DEBUG - ut_ad(rw_lock_own(&page_hash_latch, RW_LOCK_EX)); -#endif + ut_ad(buf_pool_mutex_own()); ut_ad(mutex_own(buf_page_get_mutex(bpage))); ut_a(buf_page_get_io_fix(bpage) == BUF_IO_NONE); @@ -1893,9 +1758,7 @@ buf_LRU_block_remove_hashed_page( #if defined UNIV_DEBUG || defined UNIV_BUF_DEBUG mutex_exit(buf_page_get_mutex(bpage)); - //buf_pool_mutex_exit(); - mutex_exit(&LRU_list_mutex); - rw_lock_x_unlock(&page_hash_latch); + buf_pool_mutex_exit(); buf_print(); buf_LRU_print(); buf_validate(); @@ -1921,11 +1784,11 @@ buf_LRU_block_remove_hashed_page( UT_LIST_REMOVE(list, buf_pool->zip_clean, bpage); mutex_exit(&buf_pool_zip_mutex); - //buf_pool_mutex_exit_forbid(); + buf_pool_mutex_exit_forbid(); buf_buddy_free(bpage->zip.data, - page_zip_get_size(&bpage->zip), TRUE); - buf_buddy_free(bpage, sizeof(*bpage), TRUE); - //buf_pool_mutex_exit_allow(); + page_zip_get_size(&bpage->zip)); + buf_buddy_free(bpage, sizeof(*bpage)); + buf_pool_mutex_exit_allow(); UNIV_MEM_UNDESC(bpage); return(BUF_BLOCK_ZIP_FREE); @@ -1944,9 +1807,9 @@ buf_LRU_block_remove_hashed_page( bpage->zip.data = NULL; mutex_exit(&((buf_block_t*) bpage)->mutex); - //buf_pool_mutex_exit_forbid(); - buf_buddy_free(data, page_zip_get_size(&bpage->zip), TRUE); - //buf_pool_mutex_exit_allow(); + buf_pool_mutex_exit_forbid(); + buf_buddy_free(data, page_zip_get_size(&bpage->zip)); + buf_pool_mutex_exit_allow(); mutex_enter(&((buf_block_t*) bpage)->mutex); page_zip_set_size(&bpage->zip, 0); } @@ -1972,16 +1835,15 @@ static void buf_LRU_block_free_hashed_page( /*===========================*/ - buf_block_t* block, /* in: block, must contain a file page and + buf_block_t* block) /* in: block, must contain a file page and be in a state where it can be freed */ - ibool have_page_hash_mutex) { - //ut_ad(buf_pool_mutex_own()); + ut_ad(buf_pool_mutex_own()); ut_ad(mutex_own(&block->mutex)); buf_block_set_state(block, BUF_BLOCK_MEMORY); - buf_LRU_block_free_non_file_page(block, have_page_hash_mutex); + buf_LRU_block_free_non_file_page(block); } /************************************************************************ @@ -1999,8 +1861,7 @@ buf_LRU_stat_update(void) goto func_exit; } - //buf_pool_mutex_enter(); - mutex_enter(&buf_pool_mutex); + buf_pool_mutex_enter(); /* Update the index. */ item = &buf_LRU_stat_arr[buf_LRU_stat_arr_ind]; @@ -2014,8 +1875,7 @@ buf_LRU_stat_update(void) /* Put current entry in the array. */ memcpy(item, &buf_LRU_stat_cur, sizeof *item); - //buf_pool_mutex_exit(); - mutex_exit(&buf_pool_mutex); + buf_pool_mutex_exit(); func_exit: /* Clear the current entry. */ @@ -2037,8 +1897,7 @@ buf_LRU_validate(void) ulint LRU_pos; ut_ad(buf_pool); - //buf_pool_mutex_enter(); - mutex_enter(&LRU_list_mutex); + buf_pool_mutex_enter(); if (UT_LIST_GET_LEN(buf_pool->LRU) >= BUF_LRU_OLD_MIN_LEN) { @@ -2097,9 +1956,6 @@ buf_LRU_validate(void) ut_a(buf_pool->LRU_old_len == old_len); } - mutex_exit(&LRU_list_mutex); - mutex_enter(&free_list_mutex); - UT_LIST_VALIDATE(list, buf_page_t, buf_pool->free); for (bpage = UT_LIST_GET_FIRST(buf_pool->free); @@ -2109,9 +1965,6 @@ buf_LRU_validate(void) ut_a(buf_page_get_state(bpage) == BUF_BLOCK_NOT_USED); } - mutex_exit(&free_list_mutex); - mutex_enter(&LRU_list_mutex); - UT_LIST_VALIDATE(unzip_LRU, buf_block_t, buf_pool->unzip_LRU); for (block = UT_LIST_GET_FIRST(buf_pool->unzip_LRU); @@ -2123,8 +1976,7 @@ buf_LRU_validate(void) ut_a(buf_page_belongs_to_unzip_LRU(&block->page)); } - //buf_pool_mutex_exit(); - mutex_exit(&LRU_list_mutex); + buf_pool_mutex_exit(); return(TRUE); } #endif /* UNIV_DEBUG || UNIV_BUF_DEBUG */ @@ -2140,8 +1992,7 @@ buf_LRU_print(void) const buf_page_t* bpage; ut_ad(buf_pool); - //buf_pool_mutex_enter(); - mutex_enter(&LRU_list_mutex); + buf_pool_mutex_enter(); fprintf(stderr, "Pool ulint clock %lu\n", (ulong) buf_pool->ulint_clock); @@ -2204,7 +2055,6 @@ buf_LRU_print(void) bpage = UT_LIST_GET_NEXT(LRU, bpage); } - //buf_pool_mutex_exit(); - mutex_exit(&LRU_list_mutex); + buf_pool_mutex_exit(); } #endif /* UNIV_DEBUG_PRINT || UNIV_DEBUG || UNIV_BUF_DEBUG */ === modified file 'storage/xtradb/buf/buf0rea.c' --- a/storage/xtradb/buf/buf0rea.c 2009-03-26 06:11:11 +0000 +++ b/storage/xtradb/buf/buf0rea.c 2009-05-04 02:45:47 +0000 @@ -246,22 +246,18 @@ buf_read_ahead_random( LRU_recent_limit = buf_LRU_get_recent_limit(); - //buf_pool_mutex_enter(); - mutex_enter(&buf_pool_mutex); + buf_pool_mutex_enter(); if (buf_pool->n_pend_reads > buf_pool->curr_size / BUF_READ_AHEAD_PEND_LIMIT) { - //buf_pool_mutex_exit(); - mutex_exit(&buf_pool_mutex); + buf_pool_mutex_exit(); return(0); } - mutex_exit(&buf_pool_mutex); /* Count how many blocks in the area have been recently accessed, that is, reside near the start of the LRU list. */ - rw_lock_s_lock(&page_hash_latch); for (i = low; i < high; i++) { const buf_page_t* bpage = buf_page_hash_get(space, i); @@ -273,15 +269,13 @@ buf_read_ahead_random( if (recent_blocks >= BUF_READ_AHEAD_RANDOM_THRESHOLD) { - //buf_pool_mutex_exit(); - rw_lock_s_unlock(&page_hash_latch); + buf_pool_mutex_exit(); goto read_ahead; } } } - //buf_pool_mutex_exit(); - rw_lock_s_unlock(&page_hash_latch); + buf_pool_mutex_exit(); /* Do nothing */ return(0); @@ -475,12 +469,10 @@ buf_read_ahead_linear( tablespace_version = fil_space_get_version(space); - //buf_pool_mutex_enter(); - mutex_enter(&buf_pool_mutex); + buf_pool_mutex_enter(); if (high > fil_space_get_size(space)) { - //buf_pool_mutex_exit(); - mutex_exit(&buf_pool_mutex); + buf_pool_mutex_exit(); /* The area is not whole, return */ return(0); @@ -488,12 +480,10 @@ buf_read_ahead_linear( if (buf_pool->n_pend_reads > buf_pool->curr_size / BUF_READ_AHEAD_PEND_LIMIT) { - //buf_pool_mutex_exit(); - mutex_exit(&buf_pool_mutex); + buf_pool_mutex_exit(); return(0); } - mutex_exit(&buf_pool_mutex); /* Check that almost all pages in the area have been accessed; if offset == low, the accesses must be in a descending order, otherwise, @@ -507,7 +497,6 @@ buf_read_ahead_linear( fail_count = 0; - rw_lock_s_lock(&page_hash_latch); for (i = low; i < high; i++) { bpage = buf_page_hash_get(space, i); @@ -531,8 +520,7 @@ buf_read_ahead_linear( * LINEAR_AREA_THRESHOLD_COEF) { /* Too many failures: return */ - //buf_pool_mutex_exit(); - rw_lock_s_unlock(&page_hash_latch); + buf_pool_mutex_exit(); return(0); } @@ -543,8 +531,7 @@ buf_read_ahead_linear( bpage = buf_page_hash_get(space, offset); if (bpage == NULL) { - //buf_pool_mutex_exit(); - rw_lock_s_unlock(&page_hash_latch); + buf_pool_mutex_exit(); return(0); } @@ -570,8 +557,7 @@ buf_read_ahead_linear( pred_offset = fil_page_get_prev(frame); succ_offset = fil_page_get_next(frame); - //buf_pool_mutex_exit(); - rw_lock_s_unlock(&page_hash_latch); + buf_pool_mutex_exit(); if ((offset == low) && (succ_offset == offset + 1)) { === modified file 'storage/xtradb/handler/ha_innodb.cc' --- a/storage/xtradb/handler/ha_innodb.cc 2009-06-09 12:21:26 +0000 +++ b/storage/xtradb/handler/ha_innodb.cc 2009-06-10 06:51:03 +0000 @@ -35,7 +35,17 @@ Place, Suite 330, Boston, MA 02111-1307 #pragma implementation // gcc: Class implementation #endif +#define MYSQL_SERVER + #include <mysql_priv.h> +#ifdef MYSQL_SERVER +#include <rpl_mi.h> +#include <slave.h> +// Defined in slave.cc +int init_intvar_from_file(int* var, IO_CACHE* f, int default_val); +int init_strvar_from_file(char *var, int max_size, IO_CACHE *f, + const char *default_val); +#endif /* MYSQL_SERVER */ #include <m_ctype.h> #include <mysys_err.h> @@ -78,6 +88,14 @@ extern "C" { #include "i_s.h" #include "handler0vars.h" +#ifdef MYSQL_SERVER +// Defined in trx0sys.c +extern char trx_sys_mysql_master_log_name[]; +extern ib_int64_t trx_sys_mysql_master_log_pos; +extern char trx_sys_mysql_relay_log_name[]; +extern ib_int64_t trx_sys_mysql_relay_log_pos; +#endif /* MYSQL_SERVER */ + #ifndef MYSQL_SERVER /* This is needed because of Bug #3596. Let us hope that pthread_mutex_t is defined the same in both builds: the MySQL server and the InnoDB plugin. */ @@ -176,6 +194,7 @@ static my_bool innobase_use_doublewrite static my_bool innobase_use_checksums = TRUE; static my_bool innobase_extra_undoslots = FALSE; static my_bool innobase_locks_unsafe_for_binlog = FALSE; +static my_bool innobase_overwrite_relay_log_info = FALSE; static my_bool innobase_rollback_on_timeout = FALSE; static my_bool innobase_create_status_file = FALSE; static my_bool innobase_stats_on_metadata = TRUE; @@ -1920,6 +1939,89 @@ innobase_init( } #endif /* UNIV_DEBUG */ +#ifndef MYSQL_SERVER + innodb_overwrite_relay_log_info = FALSE; +#endif + +#ifdef HAVE_REPLICATION +#ifdef MYSQL_SERVER + /* read master log position from relay-log.info if exists */ + char fname[FN_REFLEN+128]; + int pos; + int info_fd; + IO_CACHE info_file; + + fname[0] = '\0'; + + if(innobase_overwrite_relay_log_info) { + + fprintf(stderr, + "InnoDB: Warning: innodb_overwrite_relay_log_info is enabled." + " Updates in other storage engines may have problem with consistency.\n"); + + bzero((char*) &info_file, sizeof(info_file)); + fn_format(fname, relay_log_info_file, mysql_data_home, "", 4+32); + + int error=0; + + if (!access(fname,F_OK)) { + /* exist */ + if ((info_fd = my_open(fname, O_RDWR|O_BINARY, MYF(MY_WME))) < 0) { + error=1; + } else if (init_io_cache(&info_file, info_fd, IO_SIZE*2, + READ_CACHE, 0L, 0, MYF(MY_WME))) { + error=1; + } + + if (error) { +relay_info_error: + if (info_fd >= 0) + my_close(info_fd, MYF(0)); + fname[0] = '\0'; + goto skip_relay; + } + } else { + fname[0] = '\0'; + goto skip_relay; + } + + if (init_strvar_from_file(fname, sizeof(fname), &info_file, "") || /* dummy (it is relay-log) */ + init_intvar_from_file(&pos, &info_file, BIN_LOG_HEADER_SIZE)) { + end_io_cache(&info_file); + error=1; + goto relay_info_error; + } + + fprintf(stderr, + "InnoDB: relay-log.info is detected.\n" + "InnoDB: relay log: position %u, file name %s\n", + pos, fname); + + strncpy(trx_sys_mysql_relay_log_name, fname, TRX_SYS_MYSQL_MASTER_LOG_NAME_LEN); + trx_sys_mysql_relay_log_pos = (ib_int64_t) pos; + + if (init_strvar_from_file(fname, sizeof(fname), &info_file, "") || + init_intvar_from_file(&pos, &info_file, 0)) { + end_io_cache(&info_file); + error=1; + goto relay_info_error; + } + + fprintf(stderr, + "InnoDB: master log: position %u, file name %s\n", + pos, fname); + + strncpy(trx_sys_mysql_master_log_name, fname, TRX_SYS_MYSQL_MASTER_LOG_NAME_LEN); + trx_sys_mysql_master_log_pos = (ib_int64_t) pos; + + end_io_cache(&info_file); + if (info_fd >= 0) + my_close(info_fd, MYF(0)); + } +skip_relay: +#endif /* MYSQL_SERVER */ +#endif /* HAVE_REPLICATION */ + /* Check that values don't overflow on 32-bit systems. */ if (sizeof(ulint) == 4) { if (innobase_buffer_pool_size > UINT_MAX32) { @@ -2003,6 +2105,77 @@ mem_free_and_error: goto error; } +#ifdef HAVE_REPLICATION +#ifdef MYSQL_SERVER + if(innobase_overwrite_relay_log_info) { + /* If InnoDB progressed from relay-log.info, overwrite it */ + if (fname[0] == '\0') { + fprintf(stderr, + "InnoDB: something wrong with relay-info.log. InnoDB will not overwrite it.\n"); + } else if (0 != strcmp(fname, trx_sys_mysql_master_log_name) + || pos != trx_sys_mysql_master_log_pos) { + /* Overwrite relay-log.info */ + bzero((char*) &info_file, sizeof(info_file)); + fn_format(fname, relay_log_info_file, mysql_data_home, "", 4+32); + + int error = 0; + + if (!access(fname,F_OK)) { + /* exist */ + if ((info_fd = my_open(fname, O_RDWR|O_BINARY, MYF(MY_WME))) < 0) { + error = 1; + } else if (init_io_cache(&info_file, info_fd, IO_SIZE*2, + WRITE_CACHE, 0L, 0, MYF(MY_WME))) { + error = 1; + } + + if (error) { + if (info_fd >= 0) + my_close(info_fd, MYF(0)); + goto skip_overwrite; + } + } else { + error = 1; + goto skip_overwrite; + } + + char buff[FN_REFLEN*2+22*2+4], *pos; + + my_b_seek(&info_file, 0L); + pos=strmov(buff, trx_sys_mysql_relay_log_name); + *pos++='\n'; + pos=longlong2str(trx_sys_mysql_relay_log_pos, pos, 10); + *pos++='\n'; + pos=strmov(pos, trx_sys_mysql_master_log_name); + *pos++='\n'; + pos=longlong2str(trx_sys_mysql_master_log_pos, pos, 10); + *pos='\n'; + + if (my_b_write(&info_file, (uchar*) buff, (size_t) (pos-buff)+1)) + error = 1; + if (flush_io_cache(&info_file)) + error = 1; + + end_io_cache(&info_file); + if (info_fd >= 0) + my_close(info_fd, MYF(0)); +skip_overwrite: + if (error) { + fprintf(stderr, + "InnoDB: ERROR: error occured during overwriting relay-log.info.\n"); + } else { + fprintf(stderr, + "InnoDB: relay-log.info was overwritten.\n"); + } + } else { + fprintf(stderr, + "InnoDB: InnoDB and relay-log.info are synchronized. InnoDB will not overwrite it.\n"); + } + } +#endif /* MYSQL_SERVER */ +#endif /* HAVE_REPLICATION */ + + srv_extra_undoslots = (ibool) innobase_extra_undoslots; /* -------------- Log files ---------------------------*/ @@ -2270,6 +2443,26 @@ innobase_commit_low( return; } +#ifdef HAVE_REPLICATION +#ifdef MYSQL_SERVER + THD *thd=current_thd; + + if (thd && thd->slave_thread) { + /* Update the replication position info inside InnoDB */ + trx->mysql_master_log_file_name + = active_mi->rli.group_master_log_name; + trx->mysql_master_log_pos + = ((ib_int64_t)active_mi->rli.group_master_log_pos + + ((ib_int64_t)active_mi->rli.future_event_relay_log_pos - + (ib_int64_t)active_mi->rli.group_relay_log_pos)); + trx->mysql_relay_log_file_name + = active_mi->rli.group_relay_log_name; + trx->mysql_relay_log_pos + = (ib_int64_t)active_mi->rli.future_event_relay_log_pos; + } +#endif /* MYSQL_SERVER */ +#endif /* HAVE_REPLICATION */ + trx_commit_for_mysql(trx); } @@ -9509,6 +9702,12 @@ static MYSQL_SYSVAR_BOOL(extra_undoslots "don't use the datafile for normal mysqld or ibbackup! ####", NULL, NULL, FALSE); +static MYSQL_SYSVAR_BOOL(overwrite_relay_log_info, innobase_overwrite_relay_log_info, + PLUGIN_VAR_NOCMDARG | PLUGIN_VAR_READONLY, + "During InnoDB crash recovery on slave overwrite relay-log.info " + "to align master log file position if information in InnoDB and relay-log.info is different.", + NULL, NULL, FALSE); + static MYSQL_SYSVAR_BOOL(doublewrite, innobase_use_doublewrite, PLUGIN_VAR_NOCMDARG | PLUGIN_VAR_READONLY, "Enable InnoDB doublewrite buffer (enabled by default). " @@ -9851,6 +10050,7 @@ static struct st_mysql_sys_var* innobase MYSQL_SYSVAR(max_purge_lag), MYSQL_SYSVAR(mirrored_log_groups), MYSQL_SYSVAR(open_files), + MYSQL_SYSVAR(overwrite_relay_log_info), MYSQL_SYSVAR(rollback_on_timeout), MYSQL_SYSVAR(stats_on_metadata), MYSQL_SYSVAR(stats_sample_pages), === modified file 'storage/xtradb/handler/i_s.cc' --- a/storage/xtradb/handler/i_s.cc 2009-03-26 06:11:11 +0000 +++ b/storage/xtradb/handler/i_s.cc 2009-05-04 02:45:47 +0000 @@ -2282,8 +2282,7 @@ i_s_cmpmem_fill_low( RETURN_IF_INNODB_NOT_STARTED(tables->schema_table_name); - //buf_pool_mutex_enter(); - mutex_enter(&zip_free_mutex); + buf_pool_mutex_enter(); for (uint x = 0; x <= BUF_BUDDY_SIZES; x++) { buf_buddy_stat_t* buddy_stat = &buf_buddy_stat[x]; @@ -2309,8 +2308,7 @@ i_s_cmpmem_fill_low( } } - //buf_pool_mutex_exit(); - mutex_exit(&zip_free_mutex); + buf_pool_mutex_exit(); DBUG_RETURN(status); } === modified file 'storage/xtradb/handler/innodb_patch_info.h' --- a/storage/xtradb/handler/innodb_patch_info.h 2009-03-26 06:11:11 +0000 +++ b/storage/xtradb/handler/innodb_patch_info.h 2009-05-04 02:45:47 +0000 @@ -26,11 +26,10 @@ struct innodb_enhancement { {"xtradb_show_enhancements","I_S.XTRADB_ENHANCEMENTS","","http://www.percona.com/docs/wiki/percona-xtradb"}, {"innodb_show_status","Improvements to SHOW INNODB STATUS","Memory information and lock info fixes","http://www.percona.com/docs/wiki/percona-xtradb"}, {"innodb_io","Improvements to InnoDB IO","","http://www.percona.com/docs/wiki/percona-xtradb"}, -{"innodb_rw_lock","InnoDB RW-lock fixes","Useful for 8+ cores SMP systems","http://www.percona.com/docs/wiki/percona-xtradb"}, {"innodb_opt_lru_count","Fix of buffer_pool mutex","Decreases contention on buffer_pool mutex on LRU operations","http://www.percona.com/docs/wiki/percona-xtradb"}, {"innodb_buffer_pool_pages","Information of buffer pool content","","http://www.percona.com/docs/wiki/percona-xtradb"}, -{"innodb_split_buf_pool_mutex","More fix of buffer_pool mutex","Spliting buf_pool_mutex and optimizing based on innodb_opt_lru_count","http://www.percona.com/docs/wiki/percona-xtradb"}, {"innodb_expand_undo_slots","expandable maximum number of undo slots","from 1024 (default) to about 4000","http://www.percona.com/docs/wiki/percona-xtradb"}, {"innodb_extra_rseg","allow to create extra rollback segments","When create new db, the new parameter allows to create more rollback segments","http://www.percona.com/docs/wiki/percona-xtradb"}, +{"innodb_overwrite_relay_log_info","overwrite relay-log.info when slave recovery","Building as plugin, it is not used.","http://www.percona.com/docs/wiki/percona-xtradb:innodb_overwrite_relay_log_…"}, {NULL, NULL, NULL, NULL} }; === modified file 'storage/xtradb/include/buf0buddy.h' --- a/storage/xtradb/include/buf0buddy.h 2009-03-26 06:11:11 +0000 +++ b/storage/xtradb/include/buf0buddy.h 2009-05-04 02:45:47 +0000 @@ -49,11 +49,10 @@ buf_buddy_alloc( /* out: allocated block, possibly NULL if lru == NULL */ ulint size, /* in: block size, up to UNIV_PAGE_SIZE */ - ibool* lru, /* in: pointer to a variable that will be assigned + ibool* lru) /* in: pointer to a variable that will be assigned TRUE if storage was allocated from the LRU list and buf_pool_mutex was temporarily released, or NULL if the LRU list should not be used */ - ibool have_page_hash_mutex) __attribute__((malloc)); /************************************************************************** @@ -64,8 +63,7 @@ buf_buddy_free( /*===========*/ void* buf, /* in: block to be freed, must not be pointed to by the buffer pool */ - ulint size, /* in: block size, up to UNIV_PAGE_SIZE */ - ibool have_page_hash_mutex) + ulint size) /* in: block size, up to UNIV_PAGE_SIZE */ __attribute__((nonnull)); /** Statistics of buddy blocks of a given size. */ === modified file 'storage/xtradb/include/buf0buddy.ic' --- a/storage/xtradb/include/buf0buddy.ic 2009-03-26 06:11:11 +0000 +++ b/storage/xtradb/include/buf0buddy.ic 2009-05-04 02:45:47 +0000 @@ -44,11 +44,10 @@ buf_buddy_alloc_low( possibly NULL if lru==NULL */ ulint i, /* in: index of buf_pool->zip_free[], or BUF_BUDDY_SIZES */ - ibool* lru, /* in: pointer to a variable that will be assigned + ibool* lru) /* in: pointer to a variable that will be assigned TRUE if storage was allocated from the LRU list and buf_pool_mutex was temporarily released, or NULL if the LRU list should not be used */ - ibool have_page_hash_mutex) __attribute__((malloc)); /************************************************************************** @@ -59,9 +58,8 @@ buf_buddy_free_low( /*===============*/ void* buf, /* in: block to be freed, must not be pointed to by the buffer pool */ - ulint i, /* in: index of buf_pool->zip_free[], + ulint i) /* in: index of buf_pool->zip_free[], or BUF_BUDDY_SIZES */ - ibool have_page_hash_mutex) __attribute__((nonnull)); /************************************************************************** @@ -100,15 +98,14 @@ buf_buddy_alloc( /* out: allocated block, possibly NULL if lru == NULL */ ulint size, /* in: block size, up to UNIV_PAGE_SIZE */ - ibool* lru, /* in: pointer to a variable that will be assigned + ibool* lru) /* in: pointer to a variable that will be assigned TRUE if storage was allocated from the LRU list and buf_pool_mutex was temporarily released, or NULL if the LRU list should not be used */ - ibool have_page_hash_mutex) { - //ut_ad(buf_pool_mutex_own()); + ut_ad(buf_pool_mutex_own()); - return(buf_buddy_alloc_low(buf_buddy_get_slot(size), lru, have_page_hash_mutex)); + return(buf_buddy_alloc_low(buf_buddy_get_slot(size), lru)); } /************************************************************************** @@ -119,26 +116,11 @@ buf_buddy_free( /*===========*/ void* buf, /* in: block to be freed, must not be pointed to by the buffer pool */ - ulint size, /* in: block size, up to UNIV_PAGE_SIZE */ - ibool have_page_hash_mutex) + ulint size) /* in: block size, up to UNIV_PAGE_SIZE */ { - //ut_ad(buf_pool_mutex_own()); + ut_ad(buf_pool_mutex_own()); - if (!have_page_hash_mutex) { - mutex_enter(&LRU_list_mutex); - mutex_enter(&flush_list_mutex); - rw_lock_x_lock(&page_hash_latch); - } - - mutex_enter(&zip_free_mutex); - buf_buddy_free_low(buf, buf_buddy_get_slot(size), TRUE); - mutex_exit(&zip_free_mutex); - - if (!have_page_hash_mutex) { - mutex_exit(&LRU_list_mutex); - mutex_exit(&flush_list_mutex); - rw_lock_x_unlock(&page_hash_latch); - } + buf_buddy_free_low(buf, buf_buddy_get_slot(size)); } #ifdef UNIV_MATERIALIZE === modified file 'storage/xtradb/include/buf0buf.h' --- a/storage/xtradb/include/buf0buf.h 2009-03-26 06:11:11 +0000 +++ b/storage/xtradb/include/buf0buf.h 2009-05-04 04:32:30 +0000 @@ -1104,11 +1104,11 @@ struct buf_block_struct{ a block is in the unzip_LRU list if page.state == BUF_BLOCK_FILE_PAGE and page.zip.data != NULL */ -//#ifdef UNIV_DEBUG +#ifdef UNIV_DEBUG ibool in_unzip_LRU_list;/* TRUE if the page is in the decompressed LRU list; used in debugging */ -//#endif /* UNIV_DEBUG */ +#endif /* UNIV_DEBUG */ byte* frame; /* pointer to buffer frame which is of size UNIV_PAGE_SIZE, and aligned to an address divisible by @@ -1316,12 +1316,6 @@ struct buf_pool_struct{ /* mutex protecting the buffer pool struct and control blocks, except the read-write lock in them */ extern mutex_t buf_pool_mutex; -extern mutex_t LRU_list_mutex; -extern mutex_t flush_list_mutex; -extern rw_lock_t page_hash_latch; -extern mutex_t free_list_mutex; -extern mutex_t zip_free_mutex; -extern mutex_t zip_hash_mutex; /* mutex protecting the control blocks of compressed-only pages (of type buf_page_t, not buf_block_t) */ extern mutex_t buf_pool_zip_mutex; === modified file 'storage/xtradb/include/buf0buf.ic' --- a/storage/xtradb/include/buf0buf.ic 2009-03-26 06:11:11 +0000 +++ b/storage/xtradb/include/buf0buf.ic 2009-05-04 02:45:47 +0000 @@ -100,8 +100,7 @@ buf_pool_get_oldest_modification(void) buf_page_t* bpage; ib_uint64_t lsn; - //buf_pool_mutex_enter(); - mutex_enter(&flush_list_mutex); + buf_pool_mutex_enter(); bpage = UT_LIST_GET_LAST(buf_pool->flush_list); @@ -112,8 +111,7 @@ buf_pool_get_oldest_modification(void) lsn = bpage->oldest_modification; } - //buf_pool_mutex_exit(); - mutex_exit(&flush_list_mutex); + buf_pool_mutex_exit(); /* The returned answer may be out of date: the flush_list can change after the mutex has been released. */ @@ -130,8 +128,7 @@ buf_pool_clock_tic(void) /*====================*/ /* out: new clock value */ { - //ut_ad(buf_pool_mutex_own()); - ut_ad(mutex_own(&LRU_list_mutex)); + ut_ad(buf_pool_mutex_own()); buf_pool->ulint_clock++; @@ -249,7 +246,7 @@ buf_page_in_file( case BUF_BLOCK_ZIP_FREE: /* This is a free page in buf_pool->zip_free[]. Such pages should only be accessed by the buddy allocator. */ - /* ut_error; */ /* optimistic */ + ut_error; break; case BUF_BLOCK_ZIP_PAGE: case BUF_BLOCK_ZIP_DIRTY: @@ -308,7 +305,7 @@ buf_page_get_mutex( { switch (buf_page_get_state(bpage)) { case BUF_BLOCK_ZIP_FREE: - /* ut_error; */ /* optimistic */ + ut_error; return(NULL); case BUF_BLOCK_ZIP_PAGE: case BUF_BLOCK_ZIP_DIRTY: @@ -413,7 +410,7 @@ buf_page_set_io_fix( buf_page_t* bpage, /* in/out: control block */ enum buf_io_fix io_fix) /* in: io_fix state */ { - //ut_ad(buf_pool_mutex_own()); + ut_ad(buf_pool_mutex_own()); ut_ad(mutex_own(buf_page_get_mutex(bpage))); bpage->io_fix = io_fix; @@ -441,13 +438,12 @@ buf_page_can_relocate( /*==================*/ const buf_page_t* bpage) /* control block being relocated */ { - //ut_ad(buf_pool_mutex_own()); - /* optimistic */ - //ut_ad(mutex_own(buf_page_get_mutex(bpage))); - //ut_ad(buf_page_in_file(bpage)); - //ut_ad(bpage->in_LRU_list); + ut_ad(buf_pool_mutex_own()); + ut_ad(mutex_own(buf_page_get_mutex(bpage))); + ut_ad(buf_page_in_file(bpage)); + ut_ad(bpage->in_LRU_list); - return(bpage->in_LRU_list && bpage->io_fix == BUF_IO_NONE + return(buf_page_get_io_fix(bpage) == BUF_IO_NONE && bpage->buf_fix_count == 0); } @@ -476,8 +472,7 @@ buf_page_set_old( ibool old) /* in: old */ { ut_a(buf_page_in_file(bpage)); - //ut_ad(buf_pool_mutex_own()); - ut_ad(mutex_own(&LRU_list_mutex)); + ut_ad(buf_pool_mutex_own()); ut_ad(bpage->in_LRU_list); #ifdef UNIV_LRU_DEBUG @@ -733,17 +728,17 @@ buf_block_free( /*===========*/ buf_block_t* block) /* in, own: block to be freed */ { - //buf_pool_mutex_enter(); + buf_pool_mutex_enter(); mutex_enter(&block->mutex); ut_a(buf_block_get_state(block) != BUF_BLOCK_FILE_PAGE); - buf_LRU_block_free_non_file_page(block, FALSE); + buf_LRU_block_free_non_file_page(block); mutex_exit(&block->mutex); - //buf_pool_mutex_exit(); + buf_pool_mutex_exit(); } /************************************************************************* @@ -788,17 +783,14 @@ buf_page_io_query( buf_page_t* bpage) /* in: buf_pool block, must be bufferfixed */ { ibool io_fixed; - mutex_t* block_mutex = buf_page_get_mutex(bpage); - //buf_pool_mutex_enter(); - mutex_enter(block_mutex); + buf_pool_mutex_enter(); ut_ad(buf_page_in_file(bpage)); ut_ad(bpage->buf_fix_count > 0); io_fixed = buf_page_get_io_fix(bpage) != BUF_IO_NONE; - //buf_pool_mutex_exit(); - mutex_exit(block_mutex); + buf_pool_mutex_exit(); return(io_fixed); } @@ -925,11 +917,7 @@ buf_page_hash_get( ulint fold; ut_ad(buf_pool); - //ut_ad(buf_pool_mutex_own()); -#ifdef UNIV_SYNC_DEBUG - ut_ad(rw_lock_own(&page_hash_latch, RW_LOCK_EX) - || rw_lock_own(&page_hash_latch, RW_LOCK_SHARED)); -#endif + ut_ad(buf_pool_mutex_own()); /* Look for the page in the hash table */ @@ -978,13 +966,11 @@ buf_page_peek( { const buf_page_t* bpage; - //buf_pool_mutex_enter(); - rw_lock_s_lock(&page_hash_latch); + buf_pool_mutex_enter(); bpage = buf_page_hash_get(space, offset); - //buf_pool_mutex_exit(); - rw_lock_s_unlock(&page_hash_latch); + buf_pool_mutex_exit(); return(bpage != NULL); } @@ -1047,17 +1033,12 @@ buf_page_release( ut_a(block->page.buf_fix_count > 0); if (rw_latch == RW_X_LATCH && mtr->modifications) { - //buf_pool_mutex_enter(); - mutex_enter(&flush_list_mutex); - mutex_enter(&block->mutex); - ut_ad(buf_block_get_state(block) == BUF_BLOCK_FILE_PAGE); + buf_pool_mutex_enter(); buf_flush_note_modification(block, mtr); - //buf_pool_mutex_exit(); - mutex_exit(&flush_list_mutex); + buf_pool_mutex_exit(); } - else { + mutex_enter(&block->mutex); - } #ifdef UNIV_SYNC_DEBUG rw_lock_s_unlock(&(block->debug_latch)); === modified file 'storage/xtradb/include/buf0flu.ic' --- a/storage/xtradb/include/buf0flu.ic 2009-03-26 06:11:11 +0000 +++ b/storage/xtradb/include/buf0flu.ic 2009-05-04 02:45:47 +0000 @@ -59,8 +59,7 @@ buf_flush_note_modification( #ifdef UNIV_SYNC_DEBUG ut_ad(rw_lock_own(&(block->lock), RW_LOCK_EX)); #endif /* UNIV_SYNC_DEBUG */ - //ut_ad(buf_pool_mutex_own()); - ut_ad(mutex_own(&flush_list_mutex)); + ut_ad(buf_pool_mutex_own()); ut_ad(mtr->start_lsn != 0); ut_ad(mtr->modifications); @@ -100,8 +99,7 @@ buf_flush_recv_note_modification( ut_ad(rw_lock_own(&(block->lock), RW_LOCK_EX)); #endif /* UNIV_SYNC_DEBUG */ - //buf_pool_mutex_enter(); - mutex_enter(&flush_list_mutex); + buf_pool_mutex_enter(); ut_ad(block->page.newest_modification <= end_lsn); @@ -118,6 +116,5 @@ buf_flush_recv_note_modification( ut_ad(block->page.oldest_modification <= start_lsn); } - //buf_pool_mutex_exit(); - mutex_exit(&flush_list_mutex); + buf_pool_mutex_exit(); } === modified file 'storage/xtradb/include/buf0lru.h' --- a/storage/xtradb/include/buf0lru.h 2009-03-26 06:11:11 +0000 +++ b/storage/xtradb/include/buf0lru.h 2009-05-04 02:45:47 +0000 @@ -122,11 +122,10 @@ buf_LRU_free_block( buf_page_t* bpage, /* in: block to be freed */ ibool zip, /* in: TRUE if should remove also the compressed page of an uncompressed page */ - ibool* buf_pool_mutex_released, + ibool* buf_pool_mutex_released); /* in: pointer to a variable that will be assigned TRUE if buf_pool_mutex was temporarily released, or NULL */ - ibool have_LRU_mutex); /********************************************************************** Try to free a replaceable block. */ UNIV_INTERN @@ -170,8 +169,7 @@ UNIV_INTERN void buf_LRU_block_free_non_file_page( /*=============================*/ - buf_block_t* block, /* in: block, must not contain a file page */ - ibool have_page_hash_mutex); + buf_block_t* block); /* in: block, must not contain a file page */ /********************************************************************** Adds a block to the LRU list. */ UNIV_INTERN === modified file 'storage/xtradb/include/sync0rw.h' --- a/storage/xtradb/include/sync0rw.h 2009-06-09 15:08:46 +0000 +++ b/storage/xtradb/include/sync0rw.h 2009-06-10 06:51:03 +0000 @@ -361,17 +361,7 @@ Accessor functions for rw lock. */ #ifdef INNODB_RW_LOCKS_USE_ATOMICS UNIV_INLINE ulint -rw_lock_get_s_waiters( -/*==================*/ - rw_lock_t* lock); -UNIV_INLINE -ulint -rw_lock_get_x_waiters( -/*==================*/ - rw_lock_t* lock); -UNIV_INLINE -ulint -rw_lock_get_wx_waiters( +rw_lock_get_waiters( /*================*/ rw_lock_t* lock); #else /* !INNODB_RW_LOCKS_USE_ATOMICS */ @@ -498,16 +488,6 @@ rw_lock_debug_print( rw_lock_debug_t* info); /* in: debug struct */ #endif /* UNIV_SYNC_DEBUG */ -/* -#ifndef INNODB_RW_LOCKS_USE_ATOMICS -#error INNODB_RW_LOCKS_USE_ATOMICS is not defined. Do you use enough new GCC or compatibles? -#error Or do you use exact options for CFLAGS? -#error e.g. (for x86_32): "-m32 -march=i586 -mtune=i686" -#error e.g. (for Sparc_64): "-m64 -mcpu=v9" -#error Otherwise, this build may be slower than normal version. -#endif -*/ - /* NOTE! The structure appears here only for the compiler to know its size. Do not use its fields directly! The structure used in the spin lock implementation of a read-write lock. Several threads may have a shared lock @@ -519,16 +499,7 @@ no new readers will be let in while the struct rw_lock_struct { volatile lint lock_word; /* Holds the state of the lock. */ -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - volatile ulint s_waiters; /* 1: there are waiters (s_lock) */ - volatile ulint x_waiters; /* 1: there are waiters (x_lock) */ - volatile ulint wait_ex_waiters; /* 1: there are waiters (wait_ex) */ - volatile ulint reader_count; /* Number of readers who have locked this - lock in the shared mode */ - volatile ulint writer; -#else volatile ulint waiters;/* 1: there are waiters */ -#endif volatile ibool recursive;/* Default value FALSE which means the lock is non-recursive. The value is typically set to TRUE making normal rw_locks recursive. In @@ -545,16 +516,7 @@ struct rw_lock_struct { /* Thread id of writer thread. Is only guaranteed to have sane and non-stale value iff recursive flag is set. */ -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - volatile ulint writer_count; /* Number of times the same thread has - recursively locked the lock in the exclusive - mode */ - /* Used by sync0arr.c for thread queueing */ - os_event_t s_event; /* Used for s_lock */ - os_event_t x_event; /* Used for x_lock */ -#else os_event_t event; /* Used by sync0arr.c for thread queueing */ -#endif os_event_t wait_ex_event; /* Event for next-writer to wait on. A thread must decrement lock_word before waiting. */ @@ -576,7 +538,7 @@ struct rw_lock_struct { /* last s-lock file/line is not guaranteed to be correct */ const char* last_s_file_name;/* File name where last s-locked */ const char* last_x_file_name;/* File name where last x-locked */ - volatile ibool writer_is_wait_ex; + ibool writer_is_wait_ex; /* This is TRUE if the writer field is RW_LOCK_WAIT_EX; this field is located far from the memory update hotspot fields which === modified file 'storage/xtradb/include/sync0rw.ic' --- a/storage/xtradb/include/sync0rw.ic 2009-06-09 15:08:46 +0000 +++ b/storage/xtradb/include/sync0rw.ic 2009-06-10 06:51:03 +0000 @@ -68,34 +68,6 @@ rw_lock_remove_debug_info( /************************************************************************ Accessor functions for rw lock. */ - -#ifdef INNODB_RW_LOCKS_USE_ATOMICS -UNIV_INLINE -ulint -rw_lock_get_s_waiters( -/*================*/ - /* out: 1 if waiters, 0 otherwise */ - rw_lock_t* lock) /* in: rw-lock */ -{ - return(lock->s_waiters); -} -UNIV_INLINE -ulint -rw_lock_get_x_waiters( -/*================*/ - rw_lock_t* lock) -{ - return(lock->x_waiters); -} -UNIV_INLINE -ulint -rw_lock_get_wx_waiters( -/*================*/ - rw_lock_t* lock) -{ - return(lock->wait_ex_waiters); -} -#else /* !INNODB_RW_LOCKS_USE_ATOMICS */ UNIV_INLINE ulint rw_lock_get_waiters( @@ -105,95 +77,40 @@ rw_lock_get_waiters( { return(lock->waiters); } -#endif /* INNODB_RW_LOCKS_USE_ATOMICS */ - /************************************************************************ Sets lock->waiters to 1. It is not an error if lock->waiters is already 1. On platforms where ATOMIC builtins are used this function enforces a memory barrier. */ -#ifdef INNODB_RW_LOCKS_USE_ATOMICS -UNIV_INLINE -void -rw_lock_set_s_waiter_flag( -/*====================*/ - rw_lock_t* lock) /* in: rw-lock */ -{ - // os_compare_and_swap(&lock->s_waiters, 0, 1); - __sync_lock_test_and_set(&lock->s_waiters, 1); -} -UNIV_INLINE -void -rw_lock_set_x_waiter_flag( -/*====================*/ - rw_lock_t* lock) /* in: rw-lock */ -{ - // os_compare_and_swap(&lock->x_waiters, 0, 1); - __sync_lock_test_and_set(&lock->x_waiters, 1); -} -UNIV_INLINE -void -rw_lock_set_wx_waiter_flag( -/*====================*/ - rw_lock_t* lock) /* in: rw-lock */ -{ - // os_compare_and_swap(&lock->wait_ex_waiters, 0, 1); - __sync_lock_test_and_set(&lock->wait_ex_waiters, 1); -} -#else /* !INNODB_RW_LOCKS_USE_ATOMICS */ UNIV_INLINE void rw_lock_set_waiter_flag( /*====================*/ rw_lock_t* lock) /* in: rw-lock */ { +#ifdef INNODB_RW_LOCKS_USE_ATOMICS + os_compare_and_swap(&lock->waiters, 0, 1); +#else /* INNODB_RW_LOCKS_USE_ATOMICS */ lock->waiters = 1; -} #endif /* INNODB_RW_LOCKS_USE_ATOMICS */ +} /************************************************************************ Resets lock->waiters to 0. It is not an error if lock->waiters is already 0. On platforms where ATOMIC builtins are used this function enforces a memory barrier. */ -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - -UNIV_INLINE -void -rw_lock_reset_s_waiter_flag( -/*======================*/ - rw_lock_t* lock) /* in: rw-lock */ -{ - // os_compare_and_swap(&lock->s_waiters, 1, 0); - __sync_lock_test_and_set(&lock->s_waiters, 0); -} -UNIV_INLINE -void -rw_lock_reset_x_waiter_flag( -/*======================*/ - rw_lock_t* lock) /* in: rw-lock */ -{ - // os_compare_and_swap(&lock->x_waiters, 1, 0); - __sync_lock_test_and_set(&lock->x_waiters, 0); -} -UNIV_INLINE -void -rw_lock_reset_wx_waiter_flag( -/*======================*/ - rw_lock_t* lock) /* in: rw-lock */ -{ - // os_compare_and_swap(&lock->wait_ex_waiters, 1, 0); - __sync_lock_test_and_set(&lock->wait_ex_waiters, 0); -} -#else /* !INNODB_RW_LOCKS_USE_ATOMICS */ UNIV_INLINE void rw_lock_reset_waiter_flag( /*======================*/ rw_lock_t* lock) /* in: rw-lock */ { +#ifdef INNODB_RW_LOCKS_USE_ATOMICS + os_compare_and_swap(&lock->waiters, 1, 0); +#else /* INNODB_RW_LOCKS_USE_ATOMICS */ lock->waiters = 0; -} #endif /* INNODB_RW_LOCKS_USE_ATOMICS */ +} /********************************************************************** Returns the write-status of the lock - this function made more sense @@ -204,17 +121,6 @@ rw_lock_get_writer( /*===============*/ rw_lock_t* lock) { -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - if (lock->writer == RW_LOCK_NOT_LOCKED) { - return(RW_LOCK_NOT_LOCKED); - } - - if (lock->writer_is_wait_ex) { - return(RW_LOCK_WAIT_EX); - } else { - return(RW_LOCK_EX); - } -#else lint lock_word = lock->lock_word; if(lock_word > 0) { /* return NOT_LOCKED in s-lock state, like the writer @@ -226,7 +132,6 @@ rw_lock_get_writer( ut_ad(lock_word > -X_LOCK_DECR); return(RW_LOCK_WAIT_EX); } -#endif } /********************************************************************** @@ -237,9 +142,6 @@ rw_lock_get_reader_count( /*=====================*/ rw_lock_t* lock) { -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - return(lock->reader_count); -#else lint lock_word = lock->lock_word; if(lock_word > 0) { /* s-locked, no x-waiters */ @@ -249,7 +151,6 @@ rw_lock_get_reader_count( return((ulint)(-lock_word)); } return(0); -#endif } #ifndef INNODB_RW_LOCKS_USE_ATOMICS @@ -273,16 +174,12 @@ rw_lock_get_x_lock_count( /* out: value of writer_count */ rw_lock_t* lock) /* in: rw-lock */ { -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - return(lock->writer_count); -#else lint lock_copy = lock->lock_word; /* If there is a reader, lock_word is not divisible by X_LOCK_DECR */ if(lock_copy > 0 || (-lock_copy) % X_LOCK_DECR != 0) { return(0); } return(((-lock_copy) / X_LOCK_DECR) + 1); -#endif } /********************************************************************** @@ -420,26 +317,11 @@ rw_lock_s_lock_low( const char* file_name, /* in: file name where lock requested */ ulint line) /* in: line where requested */ { -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - if (UNIV_LIKELY(rw_lock_get_writer(lock) == RW_LOCK_NOT_LOCKED)) { - /* try s-lock */ - if(__sync_sub_and_fetch(&(lock->lock_word),1) <= 0) { - /* fail */ - __sync_fetch_and_add(&(lock->lock_word),1); - return(FALSE); /* locking did not succeed */ - } - /* success */ - __sync_fetch_and_add(&(lock->reader_count),1); - } else { - return(FALSE); /* locking did not succeed */ - } -#else /* TODO: study performance of UNIV_LIKELY branch prediction hints. */ if (!rw_lock_lock_word_decr(lock, 1)) { /* Locking did not succeed */ return(FALSE); } -#endif #ifdef UNIV_SYNC_DEBUG rw_lock_add_debug_info(lock, pass, RW_LOCK_SHARED, file_name, line); @@ -464,17 +346,10 @@ rw_lock_s_lock_direct( const char* file_name, /* in: file name where requested */ ulint line) /* in: line where lock requested */ { -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - ut_ad(rw_lock_get_writer(lock) == RW_LOCK_NOT_LOCKED); - ut_ad(rw_lock_get_reader_count(lock) == 0); - - __sync_fetch_and_add(&(lock->reader_count),1); -#else ut_ad(lock->lock_word == X_LOCK_DECR); /* Indicate there is a new reader by decrementing lock_word */ lock->lock_word--; -#endif lock->last_s_file_name = file_name; lock->last_s_line = line; @@ -497,17 +372,9 @@ rw_lock_x_lock_direct( ulint line) /* in: line where lock requested */ { ut_ad(rw_lock_validate(lock)); -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - ut_ad(rw_lock_get_reader_count(lock) == 0); - ut_ad(rw_lock_get_writer(lock) == RW_LOCK_NOT_LOCKED); - - lock->writer = RW_LOCK_EX; - __sync_fetch_and_add(&(lock->writer_count),1); -#else ut_ad(lock->lock_word == X_LOCK_DECR); lock->lock_word -= X_LOCK_DECR; -#endif lock->writer_thread = os_thread_get_curr_id(); lock->recursive = TRUE; @@ -581,56 +448,7 @@ rw_lock_x_lock_func_nowait( ibool success; #ifdef INNODB_RW_LOCKS_USE_ATOMICS - success = FALSE; - if ((lock->reader_count == 0) - && rw_lock_get_writer(lock) == RW_LOCK_NOT_LOCKED) { -retry_x_lock: - /* try x-lock */ - if(__sync_sub_and_fetch(&(lock->lock_word), - X_LOCK_DECR) == 0) { - /* success */ - /* try to lock writer */ - if(__sync_lock_test_and_set(&(lock->writer),RW_LOCK_EX) - == RW_LOCK_NOT_LOCKED) { - /* success */ - lock->writer_thread = curr_thread; - lock->recursive = TRUE; - lock->writer_is_wait_ex = FALSE; - /* next function may work as memory barrier */ - relock: - __sync_fetch_and_add(&(lock->writer_count),1); - -#ifdef UNIV_SYNC_DEBUG - rw_lock_add_debug_info(lock, 0, RW_LOCK_EX, file_name, line); -#endif - - lock->last_x_file_name = file_name; - lock->last_x_line = line; - - ut_ad(rw_lock_validate(lock)); - - return(TRUE); - } else { - /* x-unlock */ - __sync_fetch_and_add(&(lock->lock_word), - X_LOCK_DECR); - } - } else { - /* fail (x-lock) */ - if (__sync_fetch_and_add(&(lock->lock_word),X_LOCK_DECR) - == 0) - goto retry_x_lock; - } - } - - if (lock->recursive - && os_thread_eq(lock->writer_thread, curr_thread)) { - goto relock; - } - - //ut_ad(rw_lock_validate(lock)); - - return(FALSE); + success = os_compare_and_swap(&(lock->lock_word), X_LOCK_DECR, 0); #else success = FALSE; @@ -641,6 +459,7 @@ retry_x_lock: } mutex_exit(&(lock->mutex)); +#endif if (success) { rw_lock_set_writer_id_and_recursion_flag(lock, TRUE); @@ -667,7 +486,6 @@ retry_x_lock: ut_ad(rw_lock_validate(lock)); return(TRUE); -#endif } /********************************************************************** @@ -683,31 +501,6 @@ rw_lock_s_unlock_func( #endif ) { -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - ibool last = FALSE; - - ut_a(lock->reader_count > 0); - - /* unlock lock_word */ - __sync_fetch_and_add(&(lock->lock_word),1); - - if(__sync_sub_and_fetch(&(lock->reader_count),1) == 0) { - last = TRUE; - } - -#ifdef UNIV_SYNC_DEBUG - rw_lock_remove_debug_info(lock, pass, RW_LOCK_SHARED); -#endif - - if (UNIV_UNLIKELY(last && __sync_lock_test_and_set(&lock->wait_ex_waiters, 0))) { - os_event_set(lock->wait_ex_event); - sync_array_object_signalled(sync_primary_wait_array); - } - else if (UNIV_UNLIKELY(last && __sync_lock_test_and_set(&lock->x_waiters, 0))) { - os_event_set(lock->x_event); - sync_array_object_signalled(sync_primary_wait_array); - } -#else ut_ad((lock->lock_word % X_LOCK_DECR) != 0); #ifdef UNIV_SYNC_DEBUG @@ -724,7 +517,6 @@ rw_lock_s_unlock_func( sync_array_object_signalled(sync_primary_wait_array); } -#endif ut_ad(rw_lock_validate(lock)); @@ -742,19 +534,6 @@ rw_lock_s_unlock_direct( /*====================*/ rw_lock_t* lock) /* in: rw-lock */ { -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - ut_ad(lock->reader_count > 0); - - __sync_sub_and_fetch(&(lock->reader_count),1); - -#ifdef UNIV_SYNC_DEBUG - rw_lock_remove_debug_info(lock, 0, RW_LOCK_SHARED); -#endif - - ut_ad(!lock->s_waiters); - ut_ad(!lock->x_waiters); - ut_ad(!lock->wait_ex_waiters); -#else ut_ad(lock->lock_word < X_LOCK_DECR); #ifdef UNIV_SYNC_DEBUG @@ -765,7 +544,6 @@ rw_lock_s_unlock_direct( lock->lock_word++; ut_ad(!lock->waiters); -#endif ut_ad(rw_lock_validate(lock)); #ifdef UNIV_SYNC_PERF_STAT rw_s_exit_count++; @@ -785,49 +563,6 @@ rw_lock_x_unlock_func( #endif ) { -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - ibool last = FALSE; - ibool s_sg = FALSE; - ibool x_sg = FALSE; - - ut_ad(lock->writer_count > 0); - - if(__sync_sub_and_fetch(&(lock->writer_count),1) == 0) { - last = TRUE; - } - - if (last) { - /* unlock lock_word */ - __sync_fetch_and_add(&(lock->lock_word),X_LOCK_DECR); - - lock->recursive = FALSE; - /* FIXME: It is a value of bad manners for pthread. - But we shouldn't keep an ID of not-owner. */ - lock->writer_thread = -1; - __sync_lock_test_and_set(&(lock->writer),RW_LOCK_NOT_LOCKED); - } - -#ifdef UNIV_SYNC_DEBUG - rw_lock_remove_debug_info(lock, pass, RW_LOCK_EX); -#endif - if (last) { - if(__sync_lock_test_and_set(&lock->s_waiters, 0)){ - s_sg = TRUE; - } - if(__sync_lock_test_and_set(&lock->x_waiters, 0)){ - x_sg = TRUE; - } - } - - if (UNIV_UNLIKELY(s_sg)) { - os_event_set(lock->s_event); - sync_array_object_signalled(sync_primary_wait_array); - } - if (UNIV_UNLIKELY(x_sg)) { - os_event_set(lock->x_event); - sync_array_object_signalled(sync_primary_wait_array); - } -#else ut_ad((lock->lock_word % X_LOCK_DECR) == 0); /* lock->recursive flag also indicates if lock->writer_thread is @@ -858,7 +593,6 @@ rw_lock_x_unlock_func( } } -#endif ut_ad(rw_lock_validate(lock)); #ifdef UNIV_SYNC_PERF_STAT @@ -878,19 +612,6 @@ rw_lock_x_unlock_direct( /* Reset the exclusive lock if this thread no longer has an x-mode lock */ -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - if(__sync_sub_and_fetch(&(lock->writer_count),1) == 0) { - lock->writer = RW_LOCK_NOT_LOCKED; - } - -#ifdef UNIV_SYNC_DEBUG - rw_lock_remove_debug_info(lock, 0, RW_LOCK_EX); -#endif - - ut_ad(!lock->s_waiters); - ut_ad(!lock->x_waiters); - ut_ad(!lock->wait_ex_waiters); -#else ut_ad((lock->lock_word % X_LOCK_DECR) == 0); #ifdef UNIV_SYNC_DEBUG @@ -906,7 +627,6 @@ rw_lock_x_unlock_direct( lock->lock_word += X_LOCK_DECR; ut_ad(!lock->waiters); -#endif ut_ad(rw_lock_validate(lock)); #ifdef UNIV_SYNC_PERF_STAT === modified file 'storage/xtradb/include/trx0sys.h' --- a/storage/xtradb/include/trx0sys.h 2009-03-26 06:11:11 +0000 +++ b/storage/xtradb/include/trx0sys.h 2009-04-07 20:51:15 +0000 @@ -49,6 +49,9 @@ or there was no master log position info extern char trx_sys_mysql_master_log_name[]; extern ib_int64_t trx_sys_mysql_master_log_pos; +extern char trx_sys_mysql_relay_log_name[]; +extern ib_int64_t trx_sys_mysql_relay_log_pos; + /* If this MySQL server uses binary logging, after InnoDB has been inited and if it has done a crash recovery, we store the binlog file name and position here. If .._pos is -1, it means there was no binlog position info inside @@ -290,7 +293,7 @@ UNIV_INTERN void trx_sys_update_mysql_binlog_offset( /*===============================*/ - const char* file_name,/* in: MySQL log file name */ + const char* file_name_in,/* in: MySQL log file name */ ib_int64_t offset, /* in: position in that log file */ ulint field, /* in: offset of the MySQL log info field in the trx sys header */ @@ -421,6 +424,7 @@ therefore 256; each slot is currently 8 #define TRX_SYS_N_RSEGS 256 #define TRX_SYS_MYSQL_LOG_NAME_LEN 512 +#define TRX_SYS_MYSQL_MASTER_LOG_NAME_LEN 480 /* (500 - 12) is dead line. */ #define TRX_SYS_MYSQL_LOG_MAGIC_N 873422344 #if UNIV_PAGE_SIZE < 4096 @@ -429,6 +433,7 @@ therefore 256; each slot is currently 8 /* The offset of the MySQL replication info in the trx system header; this contains the same fields as TRX_SYS_MYSQL_LOG_INFO below */ #define TRX_SYS_MYSQL_MASTER_LOG_INFO (UNIV_PAGE_SIZE - 2000) +#define TRX_SYS_MYSQL_RELAY_LOG_INFO (UNIV_PAGE_SIZE - 1500) /* The offset of the MySQL binlog offset info in the trx system header */ #define TRX_SYS_MYSQL_LOG_INFO (UNIV_PAGE_SIZE - 1000) === modified file 'storage/xtradb/include/trx0trx.h' --- a/storage/xtradb/include/trx0trx.h 2009-03-26 06:11:11 +0000 +++ b/storage/xtradb/include/trx0trx.h 2009-04-07 20:51:15 +0000 @@ -579,6 +579,21 @@ struct trx_struct{ ib_int64_t mysql_log_offset;/* if MySQL binlog is used, this field contains the end offset of the binlog entry */ + const char* mysql_master_log_file_name; + /* if the database server is a MySQL + replication slave, we have here the + master binlog name up to which + replication has processed; otherwise + this is a pointer to a null + character */ + ib_int64_t mysql_master_log_pos; + /* if the database server is a MySQL + replication slave, this is the + position in the log file up to which + replication has processed */ + const char* mysql_relay_log_file_name; + ib_int64_t mysql_relay_log_pos; + os_thread_id_t mysql_thread_id;/* id of the MySQL thread associated with this transaction object */ ulint mysql_process_no;/* since in Linux, 'top' reports === modified file 'storage/xtradb/include/univ.i' --- a/storage/xtradb/include/univ.i 2009-06-09 15:08:46 +0000 +++ b/storage/xtradb/include/univ.i 2009-06-10 06:51:03 +0000 @@ -35,7 +35,7 @@ Created 1/20/1994 Heikki Tuuri #define INNODB_VERSION_MAJOR 1 #define INNODB_VERSION_MINOR 0 #define INNODB_VERSION_BUGFIX 3 -#define PERCONA_INNODB_VERSION 3 +#define PERCONA_INNODB_VERSION 5a /* The following is the InnoDB version as shown in SELECT plugin_version FROM information_schema.plugins; === modified file 'storage/xtradb/include/ut0auxconf.h' --- a/storage/xtradb/include/ut0auxconf.h 2009-03-26 06:11:11 +0000 +++ b/storage/xtradb/include/ut0auxconf.h 2009-04-27 04:54:14 +0000 @@ -12,8 +12,3 @@ If by any chance Makefile.in and ./confi the hack from Makefile.in wiped away then the "real" check from plug.in will take over. */ -/* This is temprary fix for http://bugs.mysql.com/43740 */ -/* force to enable */ -#ifdef HAVE_GCC_ATOMIC_BUILTINS -#define HAVE_ATOMIC_PTHREAD_T -#endif === modified file 'storage/xtradb/sync/sync0arr.c' --- a/storage/xtradb/sync/sync0arr.c 2009-03-26 06:11:11 +0000 +++ b/storage/xtradb/sync/sync0arr.c 2009-04-27 04:54:14 +0000 @@ -331,15 +331,8 @@ sync_cell_get_event( return(((mutex_t *) cell->wait_object)->event); } else if (type == RW_LOCK_WAIT_EX) { return(((rw_lock_t *) cell->wait_object)->wait_ex_event); -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - } else if (type == RW_LOCK_SHARED) { - return(((rw_lock_t *) cell->wait_object)->s_event); - } else { /* RW_LOCK_EX */ - return(((rw_lock_t *) cell->wait_object)->x_event); -#else } else { /* RW_LOCK_SHARED and RW_LOCK_EX wait on the same event */ return(((rw_lock_t *) cell->wait_object)->event); -#endif } } @@ -483,7 +476,7 @@ sync_array_cell_print( fprintf(file, "--Thread %lu has waited at %s line %lu" - " for %.2f seconds the semaphore:\n", + " for %#.5g seconds the semaphore:\n", (ulong) os_thread_pf(cell->thread), cell->file, (ulong) cell->line, difftime(time(NULL), cell->reservation_time)); @@ -510,7 +503,7 @@ sync_array_cell_print( || type == RW_LOCK_WAIT_EX || type == RW_LOCK_SHARED) { - fputs(type == RW_LOCK_SHARED ? "S-lock on" : "X-lock on", file); + fputs(type == RW_LOCK_EX ? "X-lock on" : "S-lock on", file); rwlock = cell->old_wait_rw_lock; @@ -530,21 +523,12 @@ sync_array_cell_print( } fprintf(file, -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - "number of readers %lu, s_waiters flag %lu, x_waiters flag %lu, " -#else "number of readers %lu, waiters flag %lu, " -#endif "lock_word: %lx\n" "Last time read locked in file %s line %lu\n" "Last time write locked in file %s line %lu\n", (ulong) rw_lock_get_reader_count(rwlock), -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - (ulong) rwlock->s_waiters, - (ulong) (rwlock->x_waiters || rwlock->wait_ex_waiters), -#else (ulong) rwlock->waiters, -#endif rwlock->lock_word, rwlock->last_s_file_name, (ulong) rwlock->last_s_line, === modified file 'storage/xtradb/sync/sync0rw.c' --- a/storage/xtradb/sync/sync0rw.c 2009-03-26 06:11:11 +0000 +++ b/storage/xtradb/sync/sync0rw.c 2009-04-27 04:54:14 +0000 @@ -250,17 +250,7 @@ rw_lock_create_func( #endif /* INNODB_RW_LOCKS_USE_ATOMICS */ lock->lock_word = X_LOCK_DECR; -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - lock->s_waiters = 0; - lock->x_waiters = 0; - lock->wait_ex_waiters = 0; - lock->writer = RW_LOCK_NOT_LOCKED; - lock->writer_count = 0; - lock->reader_count = 0; - lock->writer_is_wait_ex = FALSE; -#else lock->waiters = 0; -#endif /* We set this value to signify that lock->writer_thread contains garbage at initialization and cannot be used for @@ -283,12 +273,7 @@ rw_lock_create_func( lock->last_x_file_name = "not yet reserved"; lock->last_s_line = 0; lock->last_x_line = 0; -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - lock->s_event = os_event_create(NULL); - lock->x_event = os_event_create(NULL); -#else lock->event = os_event_create(NULL); -#endif lock->wait_ex_event = os_event_create(NULL); mutex_enter(&rw_lock_list_mutex); @@ -314,15 +299,7 @@ rw_lock_free( rw_lock_t* lock) /* in: rw-lock */ { ut_ad(rw_lock_validate(lock)); -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - ut_a(rw_lock_get_writer(lock) == RW_LOCK_NOT_LOCKED); - ut_a(rw_lock_get_s_waiters(lock) == 0); - ut_a(rw_lock_get_x_waiters(lock) == 0); - ut_a(rw_lock_get_wx_waiters(lock) == 0); - ut_a(rw_lock_get_reader_count(lock) == 0); -#else ut_a(lock->lock_word == X_LOCK_DECR); -#endif lock->magic_n = 0; @@ -331,12 +308,7 @@ rw_lock_free( #endif /* INNODB_RW_LOCKS_USE_ATOMICS */ mutex_enter(&rw_lock_list_mutex); -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - os_event_free(lock->s_event); - os_event_free(lock->x_event); -#else os_event_free(lock->event); -#endif os_event_free(lock->wait_ex_event); @@ -364,23 +336,12 @@ rw_lock_validate( { ut_a(lock); -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - ut_a(lock->magic_n == RW_LOCK_MAGIC_N); - - ulint waiters = rw_lock_get_s_waiters(lock); - ut_a(waiters == 0 || waiters == 1); - waiters = rw_lock_get_x_waiters(lock); - ut_a(waiters == 0 || waiters == 1); - waiters = rw_lock_get_wx_waiters(lock); - ut_a(waiters == 0 || waiters == 1); -#else ulint waiters = rw_lock_get_waiters(lock); lint lock_word = lock->lock_word; ut_a(lock->magic_n == RW_LOCK_MAGIC_N); ut_a(waiters == 0 || waiters == 1); ut_a(lock_word > -X_LOCK_DECR ||(-lock_word) % X_LOCK_DECR == 0); -#endif return(TRUE); } @@ -410,12 +371,7 @@ rw_lock_s_lock_spin( lock_loop: /* Spin waiting for the writer field to become free */ -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - while (i < SYNC_SPIN_ROUNDS - && rw_lock_get_writer(lock) != RW_LOCK_NOT_LOCKED) { -#else while (i < SYNC_SPIN_ROUNDS && lock->lock_word <= 0) { -#endif if (srv_spin_wait_delay) { ut_delay(ut_rnd_interval(0, srv_spin_wait_delay)); } @@ -456,29 +412,12 @@ lock_loop: /* Set waiters before checking lock_word to ensure wake-up signal is sent. This may lead to some unnecessary signals. */ -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - rw_lock_set_s_waiter_flag(lock); -#else rw_lock_set_waiter_flag(lock); -#endif -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - for (i = 0; i < 4; i++) { -#endif if (TRUE == rw_lock_s_lock_low(lock, pass, file_name, line)) { sync_array_free_cell(sync_primary_wait_array, index); return; /* Success */ } -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - } - - /* If wait_ex_waiter stalls, wakes it. */ - if (lock->reader_count == 0 - && __sync_lock_test_and_set(&lock->wait_ex_waiters, 0)) { - os_event_set(lock->wait_ex_event); - sync_array_object_signalled(sync_primary_wait_array); - } -#endif if (srv_print_latch_waits) { fprintf(stderr, @@ -517,12 +456,7 @@ rw_lock_x_lock_move_ownership( { ut_ad(rw_lock_is_locked(lock, RW_LOCK_EX)); -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - lock->writer_thread = os_thread_get_curr_id(); - lock->recursive = TRUE; -#else rw_lock_set_writer_id_and_recursion_flag(lock, TRUE); -#endif } /********************************************************************** @@ -596,11 +530,7 @@ rw_lock_x_lock_wait( /********************************************************************** Low-level function for acquiring an exclusive lock. */ UNIV_INLINE -#ifdef INNODB_RW_LOCKS_USE_ATOMICS -ulint -#else ibool -#endif rw_lock_x_lock_low( /*===============*/ /* out: RW_LOCK_NOT_LOCKED if did @@ -613,90 +543,6 @@ rw_lock_x_lock_low( { os_thread_id_t curr_thread = os_thread_get_curr_id(); -#ifdef INNODB_RW_LOCKS_USE_ATOMICS -retry_writer: - /* try to lock writer */ - if(__sync_lock_test_and_set(&(lock->writer),RW_LOCK_EX) - == RW_LOCK_NOT_LOCKED) { - /* success */ - /* obtain RW_LOCK_WAIT_EX right */ - lock->writer_thread = curr_thread; - lock->recursive = pass ? FALSE : TRUE; - lock->writer_is_wait_ex = TRUE; - /* atomic operation may be safer about memory order. */ - __sync_synchronize(); -#ifdef UNIV_SYNC_DEBUG - rw_lock_add_debug_info(lock, pass, RW_LOCK_WAIT_EX, - file_name, line); -#endif - } - - if (!os_thread_eq(lock->writer_thread, curr_thread)) { - return(RW_LOCK_NOT_LOCKED); - } - - switch(rw_lock_get_writer(lock)) { - case RW_LOCK_WAIT_EX: - /* have right to try x-lock */ -retry_x_lock: - /* try x-lock */ - if(__sync_sub_and_fetch(&(lock->lock_word), - X_LOCK_DECR) == 0) { - /* success */ - lock->recursive = pass ? FALSE : TRUE; - lock->writer_is_wait_ex = FALSE; - __sync_fetch_and_add(&(lock->writer_count),1); - -#ifdef UNIV_SYNC_DEBUG - rw_lock_remove_debug_info(lock, pass, RW_LOCK_WAIT_EX); - rw_lock_add_debug_info(lock, pass, RW_LOCK_EX, - file_name, line); -#endif - - lock->last_x_file_name = file_name; - lock->last_x_line = line; - - /* Locking succeeded, we may return */ - return(RW_LOCK_EX); - } else if(__sync_fetch_and_add(&(lock->lock_word), - X_LOCK_DECR) == 0) { - /* retry x-lock */ - goto retry_x_lock; - } - - /* There are readers, we have to wait */ - return(RW_LOCK_WAIT_EX); - - break; - - case RW_LOCK_EX: - /* already have x-lock */ - if (lock->recursive && (pass == 0)) { - __sync_fetch_and_add(&(lock->writer_count),1); - -#ifdef UNIV_SYNC_DEBUG - rw_lock_add_debug_info(lock, pass, RW_LOCK_EX, file_name, - line); -#endif - - lock->last_x_file_name = file_name; - lock->last_x_line = line; - - /* Locking succeeded, we may return */ - return(RW_LOCK_EX); - } - - return(RW_LOCK_NOT_LOCKED); - - break; - - default: /* RW_LOCK_NOT_LOCKED? maybe impossible */ - goto retry_writer; - } - - /* Locking did not succeed */ - return(RW_LOCK_NOT_LOCKED); -#else if (rw_lock_lock_word_decr(lock, X_LOCK_DECR)) { /* lock->recursive also tells us if the writer_thread @@ -734,7 +580,6 @@ retry_x_lock: lock->last_x_line = (unsigned int) line; return(TRUE); -#endif } /********************************************************************** @@ -759,55 +604,18 @@ rw_lock_x_lock_func( ulint index; /* index of the reserved wait cell */ ulint i; /* spin round count */ ibool spinning = FALSE; -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - ulint state = RW_LOCK_NOT_LOCKED; /* lock state acquired */ - ulint prev_state = RW_LOCK_NOT_LOCKED; -#endif ut_ad(rw_lock_validate(lock)); i = 0; lock_loop: -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - prev_state = state; - state = rw_lock_x_lock_low(lock, pass, file_name, line); - -lock_loop_2: - if (state != prev_state) i=0; /* if progress, reset counter. */ - if (state == RW_LOCK_EX) { -#else if (rw_lock_x_lock_low(lock, pass, file_name, line)) { -#endif rw_x_spin_round_count += i; return; /* Locking succeeded */ -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - } else if (state == RW_LOCK_WAIT_EX) { - - if (!spinning) { - spinning = TRUE; - rw_x_spin_wait_count++; - } - - /* Spin waiting for the reader count field to become zero */ - while (i < SYNC_SPIN_ROUNDS - && lock->lock_word != X_LOCK_DECR) { - if (srv_spin_wait_delay) { - ut_delay(ut_rnd_interval(0, - srv_spin_wait_delay)); - } - - i++; - } - if (i == SYNC_SPIN_ROUNDS) { - os_thread_yield(); - } else { - goto lock_loop; - } -#endif } else { if (!spinning) { @@ -817,11 +625,7 @@ lock_loop_2: /* Spin waiting for the lock_word to become free */ while (i < SYNC_SPIN_ROUNDS -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - && rw_lock_get_writer(lock) != RW_LOCK_NOT_LOCKED) { -#else && lock->lock_word <= 0) { -#endif if (srv_spin_wait_delay) { ut_delay(ut_rnd_interval(0, srv_spin_wait_delay)); @@ -848,46 +652,18 @@ lock_loop_2: sync_array_reserve_cell(sync_primary_wait_array, lock, -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - (state == RW_LOCK_WAIT_EX) - ? RW_LOCK_WAIT_EX : RW_LOCK_EX, -#else RW_LOCK_EX, -#endif file_name, line, &index); /* Waiters must be set before checking lock_word, to ensure signal is sent. This could lead to a few unnecessary wake-up signals. */ -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - if (state == RW_LOCK_WAIT_EX) { - rw_lock_set_wx_waiter_flag(lock); - } else { - rw_lock_set_x_waiter_flag(lock); - } -#else rw_lock_set_waiter_flag(lock); -#endif -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - for (i = 0; i < 4; i++) { - prev_state = state; - state = rw_lock_x_lock_low(lock, pass, file_name, line); - if (state == RW_LOCK_EX) { - sync_array_free_cell(sync_primary_wait_array, index); - return; /* Locking succeeded */ - } else if (state != prev_state) { - /* retry! */ - sync_array_free_cell(sync_primary_wait_array, index); - goto lock_loop_2; - } - } -#else if (rw_lock_x_lock_low(lock, pass, file_name, line)) { sync_array_free_cell(sync_primary_wait_array, index); return; /* Locking succeeded */ } -#endif if (srv_print_latch_waits) { fprintf(stderr, @@ -1138,24 +914,11 @@ rw_lock_list_print_info( fprintf(file, "RW-LOCK: %p ", (void*) lock); -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - if (rw_lock_get_s_waiters(lock)) { - fputs(" s_waiters for the lock exist", file); - } - if (rw_lock_get_x_waiters(lock)) { - fputs(" x_waiters for the lock exist", file); - } - if (rw_lock_get_wx_waiters(lock)) { - fputs(" wait_ex_waiters for the lock exist", file); - } - putc('\n', file); -#else if (rw_lock_get_waiters(lock)) { fputs(" Waiters for the lock exist\n", file); } else { putc('\n', file); } -#endif info = UT_LIST_GET_FIRST(lock->debug_list); while (info != NULL) { @@ -1194,24 +957,11 @@ rw_lock_print( #endif if (lock->lock_word != X_LOCK_DECR) { -#ifdef INNODB_RW_LOCKS_USE_ATOMICS - if (rw_lock_get_s_waiters(lock)) { - fputs(" s_waiters for the lock exist", stderr); - } - if (rw_lock_get_x_waiters(lock)) { - fputs(" x_waiters for the lock exist", stderr); - } - if (rw_lock_get_wx_waiters(lock)) { - fputs(" wait_ex_waiters for the lock exist", stderr); - } - putc('\n', stderr); -#else if (rw_lock_get_waiters(lock)) { fputs(" Waiters for the lock exist\n", stderr); } else { putc('\n', stderr); } -#endif info = UT_LIST_GET_FIRST(lock->debug_list); while (info != NULL) { === modified file 'storage/xtradb/trx/trx0sys.c' --- a/storage/xtradb/trx/trx0sys.c 2009-03-26 06:11:11 +0000 +++ b/storage/xtradb/trx/trx0sys.c 2009-04-25 20:23:06 +0000 @@ -69,9 +69,12 @@ file name and position here. We have suc up to this position. If .._pos is -1, it means no crash recovery was needed, or there was no master log position info inside InnoDB. */ -UNIV_INTERN char trx_sys_mysql_master_log_name[TRX_SYS_MYSQL_LOG_NAME_LEN]; +UNIV_INTERN char trx_sys_mysql_master_log_name[TRX_SYS_MYSQL_MASTER_LOG_NAME_LEN]; UNIV_INTERN ib_int64_t trx_sys_mysql_master_log_pos = -1; +UNIV_INTERN char trx_sys_mysql_relay_log_name[TRX_SYS_MYSQL_MASTER_LOG_NAME_LEN]; +UNIV_INTERN ib_int64_t trx_sys_mysql_relay_log_pos = -1; + /* If this MySQL server uses binary logging, after InnoDB has been inited and if it has done a crash recovery, we store the binlog file name and position here. If .._pos is -1, it means there was no binlog position info inside @@ -661,19 +664,24 @@ UNIV_INTERN void trx_sys_update_mysql_binlog_offset( /*===============================*/ - const char* file_name,/* in: MySQL log file name */ + const char* file_name_in,/* in: MySQL log file name */ ib_int64_t offset, /* in: position in that log file */ ulint field, /* in: offset of the MySQL log info field in the trx sys header */ mtr_t* mtr) /* in: mtr */ { trx_sysf_t* sys_header; + const char* file_name; - if (ut_strlen(file_name) >= TRX_SYS_MYSQL_LOG_NAME_LEN) { + if (ut_strlen(file_name_in) >= TRX_SYS_MYSQL_MASTER_LOG_NAME_LEN) { /* We cannot fit the name to the 512 bytes we have reserved */ + /* -> To store relay log file information, file_name must fit to the 480 bytes */ - return; + file_name = ""; + } + else { + file_name = file_name_in; } sys_header = trx_sysf_get(mtr); @@ -834,13 +842,26 @@ trx_sys_print_mysql_master_log_pos(void) + TRX_SYS_MYSQL_LOG_OFFSET_LOW), sys_header + TRX_SYS_MYSQL_MASTER_LOG_INFO + TRX_SYS_MYSQL_LOG_NAME); + + fprintf(stderr, + "InnoDB: and relay log file\n" + "InnoDB: position %lu %lu, file name %s\n", + (ulong) mach_read_from_4(sys_header + + TRX_SYS_MYSQL_RELAY_LOG_INFO + + TRX_SYS_MYSQL_LOG_OFFSET_HIGH), + (ulong) mach_read_from_4(sys_header + + TRX_SYS_MYSQL_RELAY_LOG_INFO + + TRX_SYS_MYSQL_LOG_OFFSET_LOW), + sys_header + TRX_SYS_MYSQL_RELAY_LOG_INFO + + TRX_SYS_MYSQL_LOG_NAME); + /* Copy the master log position info to global variables we can use in ha_innobase.cc to initialize glob_mi to right values */ ut_memcpy(trx_sys_mysql_master_log_name, sys_header + TRX_SYS_MYSQL_MASTER_LOG_INFO + TRX_SYS_MYSQL_LOG_NAME, - TRX_SYS_MYSQL_LOG_NAME_LEN); + TRX_SYS_MYSQL_MASTER_LOG_NAME_LEN); trx_sys_mysql_master_log_pos = (((ib_int64_t) mach_read_from_4( @@ -849,6 +870,19 @@ trx_sys_print_mysql_master_log_pos(void) + ((ib_int64_t) mach_read_from_4( sys_header + TRX_SYS_MYSQL_MASTER_LOG_INFO + TRX_SYS_MYSQL_LOG_OFFSET_LOW)); + + ut_memcpy(trx_sys_mysql_relay_log_name, + sys_header + TRX_SYS_MYSQL_RELAY_LOG_INFO + + TRX_SYS_MYSQL_LOG_NAME, + TRX_SYS_MYSQL_MASTER_LOG_NAME_LEN); + + trx_sys_mysql_relay_log_pos + = (((ib_int64_t) mach_read_from_4( + sys_header + TRX_SYS_MYSQL_RELAY_LOG_INFO + + TRX_SYS_MYSQL_LOG_OFFSET_HIGH)) << 32) + + ((ib_int64_t) mach_read_from_4( + sys_header + TRX_SYS_MYSQL_RELAY_LOG_INFO + + TRX_SYS_MYSQL_LOG_OFFSET_LOW)); mtr_commit(&mtr); } === modified file 'storage/xtradb/trx/trx0trx.c' --- a/storage/xtradb/trx/trx0trx.c 2009-03-26 06:11:11 +0000 +++ b/storage/xtradb/trx/trx0trx.c 2009-04-07 20:51:15 +0000 @@ -127,6 +127,10 @@ trx_create( trx->mysql_log_file_name = NULL; trx->mysql_log_offset = 0; + trx->mysql_master_log_file_name = ""; + trx->mysql_master_log_pos = 0; + trx->mysql_relay_log_file_name = ""; + trx->mysql_relay_log_pos = 0; mutex_create(&trx->undo_mutex, SYNC_TRX_UNDO); @@ -792,6 +796,19 @@ trx_commit_off_kernel( trx->mysql_log_file_name = NULL; } + if (trx->mysql_master_log_file_name[0] != '\0') { + /* This database server is a MySQL replication slave */ + trx_sys_update_mysql_binlog_offset( + trx->mysql_relay_log_file_name, + trx->mysql_relay_log_pos, + TRX_SYS_MYSQL_RELAY_LOG_INFO, &mtr); + trx_sys_update_mysql_binlog_offset( + trx->mysql_master_log_file_name, + trx->mysql_master_log_pos, + TRX_SYS_MYSQL_MASTER_LOG_INFO, &mtr); + trx->mysql_master_log_file_name = ""; + } + /* The following call commits the mini-transaction, making the whole transaction committed in the file-based world, at this log sequence number. The transaction becomes 'durable' when

1 0

[Maria-developers] Updated (by Guest): Table elimination (17)
by worklog-noreply＠askmonty.org 10 Jun '09

10 Jun '09

----------------------------------------------------------------------- WORKLOG TASK -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- TASK...........: Table elimination CREATION DATE..: Sun, 10 May 2009, 19:57 SUPERVISOR.....: Monty IMPLEMENTOR....: Psergey COPIES TO......: CATEGORY.......: Server-Sprint TASK ID........: 17 (http://askmonty.org/worklog/?tid=17) VERSION........: Server-5.1 STATUS.........: Assigned PRIORITY.......: 60 WORKED HOURS...: 0 ESTIMATE.......: 0 (hours remain) ORIG. ESTIMATE.: 0 PROGRESS NOTES: -=-=(Guest - Wed, 10 Jun 2009, 01:23)=-=- Low Level Design modified. --- /tmp/wklog.17.old.1842 2009-06-10 01:23:42.000000000 +0300 +++ /tmp/wklog.17.new.1842 2009-06-10 01:23:42.000000000 +0300 @@ -131,6 +131,11 @@ - this is what happens for constant tables, too. - I don't see how showing them could be of any use. They only make it harder to read the rewritten query. + It turns out that + - it is easy to have EXPLAIN EXTENDED show permanent (once-per-statement + lifetime) changes. + - it is hard to have it show per-execution data. This is because the warning + text is generated after the execution structures have been destroyed. * Table elimination is performed after constant table detection (but before the range analysis). Constant tables are technically different from -=-=(Guest - Wed, 03 Jun 2009, 22:01)=-=- Low Level Design modified. --- /tmp/wklog.17.old.21801 2009-06-03 22:01:34.000000000 +0300 +++ /tmp/wklog.17.new.21801 2009-06-03 22:01:34.000000000 +0300 @@ -1,3 +1,6 @@ +The code (currently in development) is at lp: +~maria-captains/maria/maria-5.1-table-elimination tree. + <contents> 1. Conditions for removal 1.1 Quick check if there are candidates -=-=(Guest - Wed, 03 Jun 2009, 15:04)=-=- Low Level Design modified. --- /tmp/wklog.17.old.20378 2009-06-03 15:04:54.000000000 +0300 +++ /tmp/wklog.17.new.20378 2009-06-03 15:04:54.000000000 +0300 @@ -135,3 +135,8 @@ Considering we've already done the join_read_const_table() call, is there any real difference between constant table and eliminated one? If there is, should we mark const tables also as eliminated? + +* For Multi-table UPDATEs/DELETEs, need to also analyze the SET clause: + - affected tables must not be eliminated + - tables that are used on the right side of the SET x=y assignments must + not be eliminated either. -=-=(Psergey - Wed, 03 Jun 2009, 12:07)=-=- Dependency created: 29 now depends on 17 -=-=(Guest - Tue, 02 Jun 2009, 00:54)=-=- Low Level Design modified. --- /tmp/wklog.17.old.23548 2009-06-02 00:54:13.000000000 +0300 +++ /tmp/wklog.17.new.23548 2009-06-02 00:54:13.000000000 +0300 @@ -128,3 +128,10 @@ - this is what happens for constant tables, too. - I don't see how showing them could be of any use. They only make it harder to read the rewritten query. + +* Table elimination is performed after constant table detection (but before + the range analysis). Constant tables are technically different from + eliminated ones (e.g. the former are shown in EXPLAIN and the latter aren't). + Considering we've already done the join_read_const_table() call, is there any + real difference between constant table and eliminated one? If there is, should + we mark const tables also as eliminated? -=-=(Psergey - Mon, 01 Jun 2009, 20:46)=-=- Low Level Design modified. --- /tmp/wklog.17.old.17448 2009-06-01 20:46:40.000000000 +0300 +++ /tmp/wklog.17.new.17448 2009-06-01 20:46:40.000000000 +0300 @@ -122,3 +122,9 @@ always. If we want table elimination to work in presence of grouping, need to devise some other way of analyzing aggregate functions. + +* Should eliminated tables be shown in EXPLAIN EXTENDED? + - If we just ignore the question, they will be shown + - this is what happens for constant tables, too. + - I don't see how showing them could be of any use. They only make it + harder to read the rewritten query. -=-=(Guest - Mon, 01 Jun 2009, 12:49)=-=- Low Level Design modified. --- /tmp/wklog.17.old.32202 2009-06-01 12:49:15.000000000 +0300 +++ /tmp/wklog.17.new.32202 2009-06-01 12:49:15.000000000 +0300 @@ -8,7 +8,7 @@ 6. Todo, issues to resolve 6.1 To resolve 6.2 Resolved - +7. Additional issues </contents> It's not really about elimination of tables, it's about elimination of inner @@ -116,3 +116,9 @@ * We remove ON clauses within semi-join nests. If these clauses contain subqueries, they probably should be gone from EXPLAIN output also? +* Aggregate functions report they depend on all tables, that is, + + item_agg_func->used_tables() == (1ULL << join->tables) - 1 + + always. If we want table elimination to work in presence of grouping, need + to devise some other way of analyzing aggregate functions. -=-=(Guest - Fri, 29 May 2009, 00:45)=-=- Low Level Design modified. --- /tmp/wklog.17.old.1348 2009-05-29 00:45:21.000000000 +0300 +++ /tmp/wklog.17.new.1348 2009-05-29 00:45:21.000000000 +0300 @@ -111,3 +111,8 @@ referred to an inner table (requirement for OJ->IJ conversion) then table elimination would not be applicable anyway. +7. Additional issues +-------------------- +* We remove ON clauses within semi-join nests. If these clauses contain + subqueries, they probably should be gone from EXPLAIN output also? + -=-=(Guest - Tue, 26 May 2009, 21:52)=-=- Low Level Design modified. --- /tmp/wklog.17.old.14120 2009-05-26 21:52:06.000000000 +0300 +++ /tmp/wklog.17.new.14120 2009-05-26 21:52:06.000000000 +0300 @@ -1,11 +1,14 @@ <contents> 1. Conditions for removal +1.1 Quick check if there are candidates 2. Removal operation properties 3. Removal operation 4. User interface -5. Todo, issues to resolve -5.1 To resolve -5.2 Resolved +5. Tests and benchmarks +6. Todo, issues to resolve +6.1 To resolve +6.2 Resolved + </contents> It's not really about elimination of tables, it's about elimination of inner @@ -29,6 +32,18 @@ GROUP BY and HAVING do not refer to the inner tables of the outer join nest. +1.1 Quick check if there are candidates +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +Before we start to enumerate join nests, here is a quick way to check if +there *can be* something to be removed: + + if ((tables used in select_list | + tables used in group/order by UNION | + tables used in where) != bitmap_of_all_tables) + { + attempt table elimination; + } + 2. Removal operation properties ------------------------------- * There is always one way to remove (no choice to remove either this or that) @@ -56,22 +71,24 @@ ----------------- * We'll add an @@optimizer switch flag for table elimination. Tentative name: 'table_elimination'. + (Note ^^ utility of the above questioned ^, as table elimination can never + be worse than no elimination. We're leaning towards not adding the flag) -* With EXPLAIN, there are two options: - - Show removed tables in a way similar to const tables, with some - indication that they are removed. - - Do not show them altogether. -(the second one seems to be better? We're targeting a situation with VIEWs, -where the user would not care about what tables were added into his query -and then discarded from it?) +* EXPLAIN will not show the removed tables at all. This will allow to check + if tables were removed, and also will behave nicely with anchor model and + VIEWs: stuff that user doesn't care about just won't be there. + +5. Tests and benchmarks +----------------------- +Should create a benchmark in sql-bench which checks if the dbms has table +elimination. +TODO elaborate -5. Todo, issues to resolve +6. Todo, issues to resolve -------------------------- -5.1 To resolve +6.1 To resolve ~~~~~~~~~~~~~~ -- See EXPLAIN question in section #4. - - Re-check how this works with equality propagation. - Relationship with prepared statements. @@ -87,7 +104,7 @@ that we'll meet outer joins which have N inner tables of which some are 1-row MyISAM tables that do not have primary key. -5.2 Resolved +6.2 Resolved ~~~~~~~~~~~~ - outer->inner join conversion is not a problem for table elimination. We make outer->inner conversions based on predicates in WHERE. If the WHERE -=-=(Guest - Fri, 22 May 2009, 17:23)=-=- High-Level Specification modified. --- /tmp/wklog.17.old.30851 2009-05-22 17:23:38.000000000 +0300 +++ /tmp/wklog.17.new.30851 2009-05-22 17:23:38.000000000 +0300 @@ -6,7 +6,7 @@ elimination but not to the same extent. Basically, what table elimination does, is to remove tables from the -execution plan when it is unneccessary to include them. This can, of +execution plan when it is unnecessary to include them. This can, of course, only happen if the right circumstances arise. Let us for example look at the following query: @@ -22,30 +22,26 @@ When using A as the left table we ensure that the query will return at least as many rows as there are in that table. For rows where the join condition (B.id = A.id) is not met the selected column (A.colA) will -contain a NULL value. +still contain it's original value. The not seen B.* row would contain all NULL:s. However, the result set could actually contain more rows than what is found in tableA if there are duplicates of the column B.id in tableB. If -A -contains a row [1, "val1"] and B the rows [1, "other1a"],[1, "other1b"] +A contains a row [1, "val1"] and B the rows [1, "other1a"],[1, "other1b"] then two rows will match in the join condition. The only way to know -what -the result will look like is to actually touch both tables during +what the result will look like is to actually touch both tables during execution. Instead, let's say that tableB contains rows that make it possible to place a unique constraint on the column B.id, for example and often the case a primary key. In this situation we know that we will get exactly -as -many rows as there are in tableA, since joining with tableB cannot +as many rows as there are in tableA, since joining with tableB cannot introduce any duplicates. If further, as in the example query, we do not select any columns from tableB, touching that table during execution is -unneccessary. We can remove the whole join operation from the execution +unnecessary. We can remove the whole join operation from the execution plan. Both SQL Server 2005/2008 and Oracle 11g will deploy table elimination -in -the case described above. Let us look at a more advanced query, where +in the case described above. Let us look at a more advanced query, where Oracle fails. select ------------------------------------------------------------ -=-=(View All Progress Notes, 22 total)=-=- http://askmonty.org/worklog/index.pl?tid=17&nolimit=1 DESCRIPTION: Eliminate not needed tables from SELECT queries.. This will speed up some views and automatically generated queries. Example: CREATE TABLE B (id int primary key); select A.colA from tableA A left outer join tableB B on B.id = A.id; In this case we can remove table B and the join from the query. HIGH-LEVEL SPECIFICATION: Here is an extended explanation of table elimination. Table elimination is a feature found in some modern query optimizers, of which Microsoft SQL Server 2005/2008 seems to have the most advanced implementation. Oracle 11g has also been confirmed to use table elimination but not to the same extent. Basically, what table elimination does, is to remove tables from the execution plan when it is unnecessary to include them. This can, of course, only happen if the right circumstances arise. Let us for example look at the following query: select A.colA from tableA A left outer join tableB B on B.id = A.id; When using A as the left table we ensure that the query will return at least as many rows as there are in that table. For rows where the join condition (B.id = A.id) is not met the selected column (A.colA) will still contain it's original value. The not seen B.* row would contain all NULL:s. However, the result set could actually contain more rows than what is found in tableA if there are duplicates of the column B.id in tableB. If A contains a row [1, "val1"] and B the rows [1, "other1a"],[1, "other1b"] then two rows will match in the join condition. The only way to know what the result will look like is to actually touch both tables during execution. Instead, let's say that tableB contains rows that make it possible to place a unique constraint on the column B.id, for example and often the case a primary key. In this situation we know that we will get exactly as many rows as there are in tableA, since joining with tableB cannot introduce any duplicates. If further, as in the example query, we do not select any columns from tableB, touching that table during execution is unnecessary. We can remove the whole join operation from the execution plan. Both SQL Server 2005/2008 and Oracle 11g will deploy table elimination in the case described above. Let us look at a more advanced query, where Oracle fails. select A.colA from tableA A left outer join tableB B on B.id = A.id and B.fromDate = ( select max(sub.fromDate) from tableB sub where sub.id = A.id ); In this example we have added another join condition, which ensures that we only pick the matching row from tableB having the latest fromDate. In this case tableB will contain duplicates of the column B.id, so in order to ensure uniqueness the primary key has to contain the fromDate column as well. In other words the primary key of tableB is (B.id, B.fromDate). Furthermore, since the subselect ensures that we only pick the latest B.fromDate for a given B.id we know that at most one row will match the join condition. We will again have the situation where joining with tableB cannot affect the number of rows in the result set. Since we do not select any columns from tableB, the whole join operation can be eliminated from the execution plan. SQL Server 2005/2008 will deploy table elimination in this situation as well. We have not found a way to make Oracle 11g use it for this type of query. Queries like these arise in two situations. Either when you have denormalized model consisting of a fact table with several related dimension tables, or when you have a highly normalized model where each attribute is stored in its own table. The example with the subselect is common whenever you store historized/versioned data. LOW-LEVEL DESIGN: The code (currently in development) is at lp: ~maria-captains/maria/maria-5.1-table-elimination tree. <contents> 1. Conditions for removal 1.1 Quick check if there are candidates 2. Removal operation properties 3. Removal operation 4. User interface 5. Tests and benchmarks 6. Todo, issues to resolve 6.1 To resolve 6.2 Resolved 7. Additional issues </contents> It's not really about elimination of tables, it's about elimination of inner sides of outer joins. 1. Conditions for removal ------------------------- We can eliminate an inner side of outer join if: 1. For each record combination of outer tables, it will always produce exactly one record. 2. There are no references to columns of the inner tables anywhere else in the query. #1 means that every table inside the outer join nest is: - is a constant table: = because it can be accessed via eq_ref(const) access, or = it is a zero-rows or one-row MyISAM-like table [MARK1] - has an eq_ref access method candidate. #2 means that WHERE clause, ON clauses of embedding outer joins, ORDER BY, GROUP BY and HAVING do not refer to the inner tables of the outer join nest. 1.1 Quick check if there are candidates ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Before we start to enumerate join nests, here is a quick way to check if there *can be* something to be removed: if ((tables used in select_list | tables used in group/order by UNION | tables used in where) != bitmap_of_all_tables) { attempt table elimination; } 2. Removal operation properties ------------------------------- * There is always one way to remove (no choice to remove either this or that) * It is always better to remove as much tables as possible (at least within our cost model). Thus, no need for any cost calculations/etc. It's an unconditional rewrite. 3. Removal operation -------------------- * Remove the outer join nest's nested join structure (i.e. get the outer join's TABLE_LIST object $OJ and remove it from $OJ->embedding, $OJ->embedding->nested_join. Update table_map's of all ancestor nested joins). [MARK2] * Move the tables and their JOIN_TABs to front like it is done with const tables, with exception that if eliminated outer join nest was within another outer join nest, that shouldn't prevent us from moving away the eliminated tables. * Update join->table_count and all-join-tables bitmap. * That's it. Nothing else? 4. User interface ----------------- * We'll add an @@optimizer switch flag for table elimination. Tentative name: 'table_elimination'. (Note ^^ utility of the above questioned ^, as table elimination can never be worse than no elimination. We're leaning towards not adding the flag) * EXPLAIN will not show the removed tables at all. This will allow to check if tables were removed, and also will behave nicely with anchor model and VIEWs: stuff that user doesn't care about just won't be there. 5. Tests and benchmarks ----------------------- Should create a benchmark in sql-bench which checks if the dbms has table elimination. TODO elaborate 6. Todo, issues to resolve -------------------------- 6.1 To resolve ~~~~~~~~~~~~~~ - Re-check how this works with equality propagation. - Relationship with prepared statements. On one hand, it's natural to desire to make table elimination a once-per-statement operation, like outer->inner join conversion. We'll have to limit the applicability by removing [MARK1] as that can change during lifetime of the statement. The other option is to do table elimination every time. This will require to rework operation [MARK2] to be undoable. I'm leaning towards doing the former. With anchor modeling, it is unlikely that we'll meet outer joins which have N inner tables of which some are 1-row MyISAM tables that do not have primary key. 6.2 Resolved ~~~~~~~~~~~~ - outer->inner join conversion is not a problem for table elimination. We make outer->inner conversions based on predicates in WHERE. If the WHERE referred to an inner table (requirement for OJ->IJ conversion) then table elimination would not be applicable anyway. 7. Additional issues -------------------- * We remove ON clauses within semi-join nests. If these clauses contain subqueries, they probably should be gone from EXPLAIN output also? * Aggregate functions report they depend on all tables, that is, item_agg_func->used_tables() == (1ULL << join->tables) - 1 always. If we want table elimination to work in presence of grouping, need to devise some other way of analyzing aggregate functions. * Should eliminated tables be shown in EXPLAIN EXTENDED? - If we just ignore the question, they will be shown - this is what happens for constant tables, too. - I don't see how showing them could be of any use. They only make it harder to read the rewritten query. It turns out that - it is easy to have EXPLAIN EXTENDED show permanent (once-per-statement lifetime) changes. - it is hard to have it show per-execution data. This is because the warning text is generated after the execution structures have been destroyed. * Table elimination is performed after constant table detection (but before the range analysis). Constant tables are technically different from eliminated ones (e.g. the former are shown in EXPLAIN and the latter aren't). Considering we've already done the join_read_const_table() call, is there any real difference between constant table and eliminated one? If there is, should we mark const tables also as eliminated? * For Multi-table UPDATEs/DELETEs, need to also analyze the SET clause: - affected tables must not be eliminated - tables that are used on the right side of the SET x=y assignments must not be eliminated either. ESTIMATED WORK TIME ESTIMATED COMPLETION DATE ----------------------------------------------------------------------- WorkLog (v3.5.9)

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[Maria-developers] Updated (by Guest): Table elimination (17)
by worklog-noreply＠askmonty.org 10 Jun '09

10 Jun '09

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[Maria-developers] bzr commit into MariaDB 5.1, with Maria 1.5:maria branch (psergey:2711)
by Sergey Petrunia 09 Jun '09

09 Jun '09

#At lp:maria based on revid:psergey@askmonty.org-20090608135546-ut1yrzbah4gdw6e6 2711 Sergey Petrunia 2009-06-10 MWL#17: Table elimination - Make elimination work with aggregate functions. The problem was that aggregate functions reported all table bits in used_tables(), and that prevented table elimination. Fixed by making aggregate functions return more correct value from used_tables(). modified: mysql-test/r/ps_11bugs.result mysql-test/r/subselect.result mysql-test/r/table_elim.result mysql-test/t/table_elim.test sql/item.h sql/item_sum.cc sql/item_sum.h per-file messages: mysql-test/r/ps_11bugs.result MWL#17: Table elimination - Update test results. The difference is because of Item_ref change: outer references to constants are now recognized as constants, too. mysql-test/r/subselect.result - Update test results. The difference is because of Item_ref change: outer references to constants are now recognized as constants, too. mysql-test/r/table_elim.result MWL#17: Table elimination - Check that elimination works in presense of aggreagate functions mysql-test/t/table_elim.test MWL#17: Table elimination - Check that elimination works in presense of aggreagate functions sql/item.h MWL#17: Table elimination - Add Item_ref::const_item() which calls (*ref)->const_item(). Before this diff Item_ref used the default implementation of const_item(){ return used_tables()==0; }. This is no longer true, as COUNT(*) now has used_tables()==0 but const_item()==FALSE. sql/item_sum.cc MWL#17: Table elimination - Make Item_sum() and it descendants not to return all bits in used_tables(). This is needed because otherwise table elimination can't work in presense of aggregate functions - COUNT(*) now has used_tables()==0 and const_item()==FALSE. Had to change Item_ref::const_item() to account for this. sql/item_sum.h MWL#17: Table elimination - Add comments === modified file 'mysql-test/r/ps_11bugs.result' --- a/mysql-test/r/ps_11bugs.result 2008-10-08 11:23:53 +0000 +++ b/mysql-test/r/ps_11bugs.result 2009-06-09 21:11:33 +0000 @@ -121,8 +121,8 @@ insert into t1 values (1); explain select * from t1 where 3 in (select (1+1) union select 1); id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables -2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL No tables used -3 DEPENDENT UNION NULL NULL NULL NULL NULL NULL NULL No tables used +2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL Impossible HAVING +3 DEPENDENT UNION NULL NULL NULL NULL NULL NULL NULL Impossible HAVING NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL select * from t1 where 3 in (select (1+1) union select 1); a === modified file 'mysql-test/r/subselect.result' --- a/mysql-test/r/subselect.result 2009-04-25 09:04:38 +0000 +++ b/mysql-test/r/subselect.result 2009-06-09 21:11:33 +0000 @@ -4353,13 +4353,13 @@ id select_type table type possible_keys 1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00 2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 2 100.00 Using temporary; Using filesort Warnings: -Note 1003 select 1 AS `1` from `test`.`t1` where <in_optimizer>(1,<exists>(select 1 AS `1` from `test`.`t1` group by `test`.`t1`.`a` having (<cache>(1) = <ref_null_helper>(1)))) +Note 1003 select 1 AS `1` from `test`.`t1` where <in_optimizer>(1,<exists>(select 1 AS `1` from `test`.`t1` group by `test`.`t1`.`a` having 1)) EXPLAIN EXTENDED SELECT 1 FROM t1 WHERE 1 IN (SELECT 1 FROM t1 WHERE a > 3 GROUP BY a); id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables 2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 2 100.00 Using where; Using temporary; Using filesort Warnings: -Note 1003 select 1 AS `1` from `test`.`t1` where <in_optimizer>(1,<exists>(select 1 AS `1` from `test`.`t1` where (`test`.`t1`.`a` > 3) group by `test`.`t1`.`a` having (<cache>(1) = <ref_null_helper>(1)))) +Note 1003 select 1 AS `1` from `test`.`t1` where <in_optimizer>(1,<exists>(select 1 AS `1` from `test`.`t1` where (`test`.`t1`.`a` > 3) group by `test`.`t1`.`a` having 1)) DROP TABLE t1; End of 5.0 tests. CREATE TABLE t1 (a INT, b INT); === modified file 'mysql-test/r/table_elim.result' --- a/mysql-test/r/table_elim.result 2009-06-03 13:10:45 +0000 +++ b/mysql-test/r/table_elim.result 2009-06-09 21:11:33 +0000 @@ -53,4 +53,19 @@ t3.a=t1.a) on t0.a=t1.a; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t0 ALL NULL NULL NULL NULL 4 1 SIMPLE t1 ALL NULL NULL NULL NULL 4 +# Elimination with aggregate functions +explain select count(*) from t1 left join t2 on t2.a=t1.a; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 4 +explain select count(1) from t1 left join t2 on t2.a=t1.a; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 4 +explain select count(1) from t1 left join t2 on t2.a=t1.a group by t1.a; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 4 Using temporary; Using filesort +This must not use elimination: +explain select count(1) from t1 left join t2 on t2.a=t1.a group by t2.a; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 4 Using temporary; Using filesort +1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t1.a 1 Using index drop table t0, t1, t2, t3; === modified file 'mysql-test/t/table_elim.test' --- a/mysql-test/t/table_elim.test 2009-06-03 13:10:45 +0000 +++ b/mysql-test/t/table_elim.test 2009-06-09 21:11:33 +0000 @@ -29,8 +29,6 @@ explain select t1.a from t1 left join t2 --echo # This will not be eliminated as t2.b is in group list: explain select t1.a from t1 left join t2 on t2.a=t1.a group by t2.b; -## TODO: Aggregate functions prevent table elimination ATM. - --echo # This will not be eliminated as t2.b is in the WHERE explain select t1.a from t1 left join t2 on t2.a=t1.a where t2.b < 3 or t2.b is null; @@ -47,6 +45,13 @@ from t0 left join (t1 left join (t2 join t3 on t2.b=t3.b) on t2.a=t1.a and t3.a=t1.a) on t0.a=t1.a; +--echo # Elimination with aggregate functions +explain select count(*) from t1 left join t2 on t2.a=t1.a; +explain select count(1) from t1 left join t2 on t2.a=t1.a; +explain select count(1) from t1 left join t2 on t2.a=t1.a group by t1.a; + +--echo This must not use elimination: +explain select count(1) from t1 left join t2 on t2.a=t1.a group by t2.a; drop table t0, t1, t2, t3; === modified file 'sql/item.h' --- a/sql/item.h 2009-04-25 10:05:32 +0000 +++ b/sql/item.h 2009-06-09 21:11:33 +0000 @@ -2203,6 +2203,10 @@ public: if (!depended_from) (*ref)->update_used_tables(); } + bool const_item() const + { + return (*ref)->const_item(); + } table_map not_null_tables() const { return (*ref)->not_null_tables(); } void set_result_field(Field *field) { result_field= field; } bool is_result_field() { return 1; } === modified file 'sql/item_sum.cc' --- a/sql/item_sum.cc 2009-04-25 09:04:38 +0000 +++ b/sql/item_sum.cc 2009-06-09 21:11:33 +0000 @@ -542,11 +542,6 @@ void Item_sum::update_used_tables () args[i]->update_used_tables(); used_tables_cache|= args[i]->used_tables(); } - - used_tables_cache&= PSEUDO_TABLE_BITS; - - /* the aggregate function is aggregated into its local context */ - used_tables_cache |= (1 << aggr_sel->join->tables) - 1; } } === modified file 'sql/item_sum.h' --- a/sql/item_sum.h 2008-12-09 19:43:10 +0000 +++ b/sql/item_sum.h 2009-06-09 21:11:33 +0000 @@ -255,6 +255,12 @@ protected: */ Item **orig_args, *tmp_orig_args[2]; table_map used_tables_cache; + + /* + TRUE <=> We've managed to calculate the value of this Item in + opt_sum_query(), hence it can be considered constant at all subsequent + steps. + */ bool forced_const; public: @@ -341,6 +347,14 @@ public: virtual const char *func_name() const= 0; virtual Item *result_item(Field *field) { return new Item_field(field); } + /* + Return bitmap of tables that are needed to evaluate the item. + + The implementation takes into account the used strategy: items resolved + at optimization phase report 0. + Items that depend on the number of rows only, e.g. COUNT(*) will report + zero, but will still false from const_item(). + */ table_map used_tables() const { return used_tables_cache; } void update_used_tables (); void cleanup()

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